WO2016119415A1

WO2016119415A1 - Method, apparatus and system for handling wlan link anomaly in msa

Info

Publication number: WO2016119415A1
Application number: PCT/CN2015/084672
Authority: WO
Inventors: 罗海燕; 彭文杰; 邓天乐
Original assignee: 华为技术有限公司
Priority date: 2015-01-30
Filing date: 2015-07-21
Publication date: 2016-08-04
Also published as: CN106465372A; CN106465372B

Abstract

Provided are a method, apparatus and system for handling a WLAN link anomaly in MSA, which relate to the technical field of communications. The invention can determine the occurrence of a WLAN link anomaly in MSA, preventing data from continuing to be distributed to an anomalous WLAN link for transmission. The method comprises: a base station acquiring a link anomaly indication; according to the link anomaly indication, stopping a protocol data unit (PDU) to be transmitted from being distributed to a cellular network link and to the WLAN link for transmission, and sending to a user equipment (UE) through the cellular network link the PDU to be transmitted, the link anomaly indication being used for indicating the occurrence of a WLAN link anomaly. The method applies to MSA.

Description

Method, device and system for processing WLAN link abnormality in MSA

This application claims the priority of the Chinese Patent Application filed on January 30, 2015, the Chinese Patent Application No. PCT/CN2015/072052, entitled "Processing, Apparatus and System for WLAN Link Abnormality in MSA". The entire contents of this application are incorporated herein by reference.

Technical field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for processing a WLAN link abnormality in an MSA.

Background technique

With the continuous development of wireless network technology, in order to further improve the edge throughput of wireless networks, multi-stream aggregation (MSA) technology has been proposed. The MSA technology refers to the convergence of a cellular network and a wireless local area network (English: wireless local area network (WLAN) for dual connectivity (English: dual connectivity, abbreviation: DC) communication, that is, the data transmitting end will be part of the data in the cellular network. The traffic is split into WLANs, and the data receiving end aggregates data received through the cellular network and the WLAN.

A commonly used MSA technology is DC communication for long-term evolution (English: long term evolution, LTE) network and WLAN convergence. In the MSA technology, the data transmitting end can split the data in the radio link control (RDC) layer in LTE, that is, when the RLC layer entity receives the data sent by the upper layer, the RLC The layer entity offloads part of the data on the LTE link (eg, data with lower latency requirements) to the WLAN link for transmission. In the LTE network, when the RLC layer entity works in the acknowledgment mode (English: acknowledgment mode, abbreviation: AM), if the number of retransmissions of data on the LTE link has reached a preset maximum value within a preset time, Then, the RLC layer entity determines that a radio link failure (English: radio link failure, abbreviation: RLF) occurs on the LTE link, and initiates a re-establishment process of radio resource control (English: radio resource control, abbreviation: RRC) connection. In In the WLAN, if the number of retransmissions of data on the WLAN link has reached a preset maximum value, the data transmitting end discards the data, that is, the data transmission fails.

Therefore, in the foregoing MSA technology, due to the existing mechanism of the LTE network and the WLAN, the data transmitting end can only determine that the RLF occurs on the LTE link, and does not involve determining a scheme in which the WLAN link is abnormal. Therefore, when the WLAN is used, When an abnormality occurs in the link, the transmitting end continuously distributes the data to the WLAN link transmission in which the abnormality occurs, thereby causing the data transmission transmitted to the WLAN link transmission to fail.

Summary of the invention

The invention provides a method, a device and a system for processing a WLAN link abnormality in an MSA, which can determine that an abnormality occurs in a WLAN link in the MSA, and avoids continuously distributing data to an abnormal WLAN link transmission.

In order to achieve the above object, the present invention adopts the following technical solutions:

In a first aspect, the present invention provides a method for processing a WLAN link abnormality in an MSA, including:

The base station acquires a link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link;

The base station stops distributing protocol data units (PDUs to be transmitted) to the cellular network link and the WLAN link transmission according to the link abnormality indication, and passes the cellular network The link sends the PDU to be transmitted to the user equipment (English: user equipment, abbreviation: UE).

In a first possible implementation manner of the first aspect, the acquiring, by the base station, a link abnormality indication includes:

When the base station determines that an abnormality occurs in the WLAN link, the base station generates the link abnormality indication.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation, the method for determining, by the base station, that the WLAN link is abnormal includes:

Determining, by the base station, a retransmission PDU that is distributed to the WLAN link transmission in at least one retransmission PDU;

If the retransmitted PDU distributed to the WLAN link transmission meets a preset condition, The base station determines that the WLAN link is abnormal.

The retransmission PDU that is distributed to the WLAN link transmission meets preset conditions, including:

And the retransmitted PDU distributed to the WLAN link has a PDU whose retransmission number is greater than or equal to a preset first threshold, or the retransmission PDU that is distributed to the WLAN link transmission The ratio of the number to the total number of PDUs transmitted to the WLAN link transmission is greater than or equal to a preset second threshold.

With reference to the second possible implementation manner of the first aspect, in a third possible implementation manner, the method, before determining, by the base station, the retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, the method Also includes:

Transmitting, by the base station, the PDU to be transmitted to the cellular network link and the WLAN link transmission;

The base station records an identifier of a PDU transmitted to the WLAN link for transmission;

Obtaining, by the base station, an identifier of the at least one retransmission PDU;

Determining, by the base station, a retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, including:

The base station determines, according to the identifier of the at least one retransmission PDU and the identifier of the PDU transmitted to the WLAN link, the retransmission PDU that is distributed to the WLAN link transmission.

With reference to the third possible implementation manner of the foregoing aspect, in a fourth possible implementation, the identifier of the at least one retransmitted PDU is a sequence number SN of the at least one retransmitted PDU,

Obtaining, by the base station, the identifier of the at least one retransmission PDU, including:

Receiving, by the base station, a first status report sent by the UE, where the first status report includes an SN of the at least one retransmitted PDU;

Obtaining, by the base station, the SN of the at least one retransmission PDU from the first status report.

With reference to the third possible implementation of the first aspect, in a fifth possible implementation, the identifier of the at least one retransmission PDU is distributed to the WLAN link transmission The SN of the failed data packet, the data packet including the at least one retransmission PDU,

The base station receives a second status report sent by an access point (English: access controller, abbreviated as AP), and the second status report includes an SN of the data packet;

The base station acquires an SN of the data packet from the second status report.

With reference to the first possible implementation manner of the first aspect, in a sixth possible implementation, the method for determining, by the base station, that the WLAN link is abnormal includes:

The base station receives a measurement report, where the measurement report includes measurement information of the WLAN link;

If the measurement information satisfies a preset abnormality determination condition, the base station determines that the WLAN link is abnormal.

With reference to the foregoing first aspect, in a seventh possible implementation, the acquiring, by the base station, a link abnormality indication includes:

The base station receives a link abnormality message sent by the WT, and the link abnormality message carries the link abnormality indication.

With reference to the foregoing first aspect, in an eighth possible implementation, the acquiring, by the base station, a link abnormality indication includes:

The base station receives the link abnormality message sent by the UE, and the link abnormality message carries the link abnormality indication.

With reference to the foregoing first aspect, in a ninth possible implementation, the acquiring, by the base station, a link abnormality indication includes:

The base station receives a link abnormality message sent by the AP, where the link abnormality message carries the link abnormality indication.

With reference to the foregoing first aspect or the first possible implementation of the first aspect to any one of the ninth possible implementation manners of the first aspect, in the tenth possible implementation manner, The PDU to be transmitted includes PDUs that have not been transmitted to the UE that have been distributed to the cellular network link and the PDUs transmitted by the WLAN link,

The sending, by the cellular network link, the PDU to be transmitted to the UE includes:

The base station sends a status report request to the UE, and the status report request is used for Requesting the UE to feed back the PDU that is not transmitted to the UE;

Receiving, by the base station, a feedback status report sent by the UE, where the feedback status report is used to indicate the PDU that is not transmitted to the UE;

And transmitting, by the base station, the PDU that is not transmitted to the UE by using the cellular network link to the UE according to the feedback status report.

In combination with the foregoing first aspect or the first possible implementation of the first aspect to any one of the tenth possible implementation manners of the first aspect, in an eleventh possible implementation manner, The method also includes:

The base station controls the UE to reestablish a WLAN link according to the link abnormality indication.

In a second aspect, the present invention provides a method for processing a WLAN link abnormality in an MSA, including:

When the UE determines that the WLAN link is abnormal, the UE generates a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal;

And the UE stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the PDU to be transmitted to the base station by using the cellular network link.

In a first possible implementation manner of the second aspect, the method further includes:

The UE sends the link abnormality indication to the base station, where the link abnormality indication is used by the base station to determine that the WLAN link is abnormal.

With reference to the foregoing second aspect or the first possible implementation manner of the foregoing aspect, in a second possible implementation manner, the method for determining, by the UE, that the WLAN link is abnormal includes:

Determining, by the UE, a retransmission PDU that is distributed to the WLAN link transmission in at least one retransmission PDU;

If the retransmitted PDU transmitted to the WLAN link meets a preset condition, the UE determines that the WLAN link is abnormal,

The number of retransmissions in the retransmission PDU distributed to the WLAN link transmission is greater than or a PDU equal to a preset first threshold value, or a ratio of the number of retransmission PDUs distributed to the WLAN link transmission to the total number of PDUs transmitted to the WLAN link transmission is greater than or equal to a pre- Set the second threshold.

With reference to the second possible implementation of the second aspect, in a third possible implementation, the method, before the UE determines to retransmit the retransmission PDU in the at least one retransmission PDU to the WLAN link transmission, the method Also includes:

Transmitting, by the UE, the PDU to be transmitted to the cellular network link and the WLAN link transmission;

The UE records a sequence number SN of a PDU transmitted to the WLAN link transmission;

Obtaining, by the UE, the SN of the at least one retransmission PDU;

Determining, by the UE, the retransmission PDUs that are distributed to the WLAN link transmission in the at least one retransmission PDU, including:

Determining, by the UE, the retransmission PDUs transmitted to the WLAN link transmission according to the SN of the at least one retransmission PDU and the SN of the PDU transmitted to the WLAN link.

With reference to the foregoing second aspect or the first possible implementation manner of the foregoing aspect, in a fourth possible implementation manner, the method for determining, by the UE, that the WLAN link is abnormal includes:

Obtaining, by the UE, measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link;

If the measurement information satisfies a preset abnormality determination condition, the UE determines that the WLAN link is abnormal.

With reference to the foregoing second aspect or the first possible implementation of the second aspect to any one of the fourth possible implementation manners of the second aspect, in a fifth possible implementation manner, The PDU to be transmitted includes a PDU that has been distributed to the cellular network link and the PDU transmitted by the WLAN link that is not transmitted to the base station,

The sending, by the cellular network link, the PDU to be transmitted to the base station includes:

Sending, by the UE, a status report request to the base station, where the status report request is used Requesting, by the base station, to feed back the PDU that is not transmitted to the base station;

Receiving, by the UE, a feedback status report sent by the base station, where the feedback status report is used to indicate the PDU that is not transmitted to the base station;

And transmitting, by the UE, the PDU that is not transmitted to the base station to the base station by using the cellular network link according to the feedback status report.

In a third aspect, the present invention provides a method for processing a WLAN link abnormality in an MSA, including:

The user equipment UE receives the link abnormality message sent by the base station, where the link abnormality message carries the link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal;

The UE stops distributing the protocol data unit PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the to-be-transmitted to the base station by using the cellular network link. PDU.

In a first possible implementation manner of the third aspect, before the UE receives the link abnormality message sent by the base station, the method further includes:

The UE sends a measurement report to the base station, where the measurement report includes measurement information of the WLAN link.

In combination with the foregoing third aspect or the first possible implementation manner of the third aspect, in a second possible internship mode, the PDU to be transmitted includes the already distributed to the cellular network link and the WLAN chain The PDU transmitted by the path is not transmitted to the PDU of the base station.

Sending, by the UE, a status report request to the base station, where the status report request is used to request the base station to feed back the PDU that is not transmitted to the base station;

In a fourth aspect, the present invention provides a method for processing a WLAN link abnormality in an MSA, including:

The WLAN terminal WT acquires measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link;

If the measurement information meets the preset abnormality determination condition, the WT generates a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal;

The WT sends the link abnormality indication to a base station.

In a first possible implementation manner of the fourth aspect, the WT sends the link abnormality indication to a base station, including:

The WT sends a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.

In a fifth aspect, the present invention provides a method for processing a WLAN link abnormality in an MSA, including:

The AP monitors a packet loss rate, where the packet loss rate is used to indicate a rate at which the AP fails to forward the PDU;

When the packet loss rate is greater than or equal to a preset packet loss rate threshold, the AP generates a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal.

The AP sends the link abnormality indication to a base station.

In a first possible implementation manner of the fifth aspect, the sending, by the AP, the link abnormality indication to a base station includes:

The AP sends a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.

In a sixth aspect, the present invention provides a method for processing a WLAN link abnormality in an MSA, including:

The AP determines a sequence number SN of the data packet that is transmitted to the WLAN link transmission failure, the data packet includes at least one PDU, and the SN of the data packet is used to determine whether an abnormality occurs in the WLAN link;

The AP sends a status report to the base station, where the status report includes the SN of the data packet.

In a first possible implementation manner of the sixth aspect, before the determining, by the AP, the SN of the data packet that is failed to be transmitted to the WLAN link, the method further includes:

Receiving, by the AP, the data packet sent by the base station, where a packet header of the data packet includes an SN of the data packet;

The AP determines the SN of the data packet that is transmitted to the WLAN link transmission failure, including:

The AP determines an SN of the data packet according to a packet header of the data packet.

In a seventh aspect, the present invention provides a base station, including:

An acquiring unit, configured to obtain a link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link;

a transmitting unit, configured to stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication acquired by the acquiring unit, and send the PDU to the UE by using the cellular network link The PDU to be transmitted.

In a first possible implementation of the seventh aspect,

The acquiring unit is specifically configured to generate the link abnormality indication when it is determined that the WLAN link is abnormal.

In conjunction with the first possible implementation of the seventh aspect, in a second possible implementation manner,

The acquiring unit is specifically configured to determine a retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, and if the retransmission PDU that is transmitted to the WLAN link transmission meets a preset condition, determine The WLAN link is abnormal.

In conjunction with the second possible implementation of the seventh aspect, in a third possible implementation In the way,

The transmitting unit is further configured to: before the obtaining unit determines that the retransmission PDU of the WLAN link transmission is distributed in the at least one retransmission PDU, distribute the PDU to be transmitted to the cellular network link and The WLAN link transmission;

The base station further includes a recording unit,

The recording unit is configured to record an identifier of a PDU that is transmitted by the transmission unit to the WLAN link;

The obtaining unit is further configured to acquire an identifier of the at least one retransmission PDU;

The obtaining unit is specifically configured to determine, according to the identifier of the at least one retransmission PDU and the identifier of the PDU that is transmitted to the WLAN link and recorded by the recording unit, to determine the distribution to the WLAN link. Transmitted PDUs transmitted.

With reference to the third possible implementation manner of the seventh aspect, in a fourth possible implementation, the identifier of the at least one retransmission PDU acquired by the acquiring unit is a sequence number SN of the at least one retransmission PDU. ,

The acquiring unit is configured to receive a first status report sent by the UE, and obtain an SN of the at least one retransmitted PDU from the first status report, where the first status report includes the at least one An SN that retransmits a PDU.

With reference to the third possible implementation manner of the seventh aspect, in a fifth possible implementation, the identifier of the at least one retransmission PDU acquired by the acquiring unit is data that is transmitted to the WLAN link transmission failure The SN of the packet, the data packet including the at least one retransmission PDU,

The acquiring unit is specifically configured to receive a second status report sent by the AP, and obtain an SN of the data packet from the second status report, where the second status report includes an SN of the data packet.

In conjunction with the first possible implementation of the seventh aspect, in a sixth possible implementation manner,

The acquiring unit is configured to receive a measurement report, where the measurement report includes measurement information of the WLAN link, and if the measurement information meets a preset abnormality determination condition, determining that the WLAN link is abnormal.

In combination with the foregoing seventh aspect, in a seventh possible implementation manner,

The acquiring unit is specifically configured to receive a link abnormality message sent by the WT, where the link abnormality message carries the link abnormality indication.

In combination with the foregoing seventh aspect, in an eighth possible implementation manner,

The acquiring unit is specifically configured to receive a link abnormality message sent by the UE, where the link abnormality message carries the link abnormality indication.

In combination with the foregoing seventh aspect, in a ninth possible implementation manner,

The acquiring unit is specifically configured to receive a link abnormality message sent by the AP, where the link abnormality message carries the link abnormality indication.

With reference to the foregoing seventh aspect, or the first possible implementation manner of the seventh aspect, to any one of the ninth possible implementation manners of the seventh aspect, in a tenth possible implementation manner, The PDU to be transmitted includes PDUs that have not been transmitted to the UE that have been distributed to the cellular network link and the PDU of the WLAN link,

The transmitting unit is specifically configured to send a status report request to the UE, and receive a feedback status report sent by the UE, and send, by using the cellular network link, the status to the UE according to the feedback status report. a PDU that is not transmitted to the UE, the status report request is used to request the UE to feed back the PDU that is not transmitted to the UE, and the feedback status report is used to indicate the PDU that is not transmitted to the UE .

In combination with the foregoing seventh aspect or the first possible implementation manner of the seventh aspect to any one of the tenth possible implementation manners of the fifth aspect, in an eleventh possible implementation manner, The base station further includes a control unit,

The control unit is configured to control the UE to re-establish a WLAN link according to the link abnormality indication acquired by the acquiring unit.

In an eighth aspect, the present invention provides a UE, including:

a generating unit, configured to generate a link abnormality indication, where the determining unit determines that an abnormality occurs in the WLAN link, where the link abnormality indication is used to indicate that the WLAN link is abnormal;

a transmitting unit, configured to stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication generated by the generating unit, and send the PDU to the base station by using the cellular network link The PDU to be transmitted.

In a first possible implementation manner of the eighth aspect, the UE further includes a sending unit,

The sending unit is configured to send, to the base station, the link abnormality indication generated by the generating unit, where the link abnormality indication is used by the base station to determine that an abnormality occurs in the WLAN link.

With reference to the foregoing eighth aspect or the first possible implementation manner of the eighth aspect, in a second possible implementation manner,

The determining unit is configured to determine a retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, and if the retransmission PDU that is transmitted to the WLAN link transmission meets a preset condition, determine the location An abnormality occurs in the WLAN link.

In conjunction with the second possible implementation of the eighth aspect, in a third possible implementation manner,

The transmitting unit is further configured to: before the determining unit determines that the retransmission PDU of the WLAN link transmission is distributed in the at least one retransmission PDU, distribute the PDU to be transmitted to the cellular network link and The WLAN link transmission;

The UE further includes a recording unit and an acquiring unit,

The recording unit is configured to record a serial number SN of the PDU transmitted by the transmission unit to the WLAN link;

The acquiring unit is configured to acquire an SN of the at least one retransmission PDU;

The determining unit is specifically configured to determine, according to the SN of the at least one retransmission PDU acquired by the acquiring unit, and the SN of the PDU that is transmitted to the WLAN link and recorded by the recording unit, to determine the distribution. Retransmission PDUs transmitted to the WLAN link.

In combination with the foregoing eighth aspect or the first possible implementation of the eighth aspect, In the fourth possible implementation,

The determining unit is specifically configured to acquire measurement information of the WLAN link, and if the measurement information meets a preset abnormality determination condition, the UE determines that an abnormality occurs in the WLAN link, and the measurement information is used by Determining whether an abnormality has occurred in the WLAN link.

With reference to the foregoing eighth aspect, or the first possible implementation manner of the eighth aspect, to any one of the fourth possible implementation manners of the eighth aspect, in a fifth possible implementation manner, The PDU to be transmitted includes a PDU that has been distributed to the cellular network link and the PDU transmitted by the WLAN link that is not transmitted to the base station,

The transmitting unit is specifically configured to send a status report request to the base station, and receive a feedback status report sent by the base station, and send, by using the cellular network link, the status report to the base station according to the feedback status report. a PDU that is not transmitted to the base station, the status report request is used to request the base station to feed back the PDU that is not transmitted to the base station, and the feedback status report is used to indicate the PDU that is not transmitted to the base station. .

In a ninth aspect, the present invention provides a UE, including:

a receiving unit, configured to receive a link abnormality message sent by the base station, where the link abnormality message carries the link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link;

a transmitting unit, configured to stop distributing, according to the link abnormality indication received by the receiving unit, the protocol data unit PDU to be transmitted to the cellular network link and the WLAN link transmission, and to the base station by using the cellular network link Sending the PDU to be transmitted.

In a first possible implementation manner of the ninth aspect, the UE further includes an acquiring unit and a sending unit, where

The acquiring unit is configured to acquire measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link, before the receiving unit receives a link abnormality message sent by the base station;

The sending unit is configured to send a measurement report to the base station, where the measurement report includes measurement information of the WLAN link.

In combination with the foregoing ninth aspect or the first possible implementation manner of the ninth aspect, in the second possible internship mode, the PDU to be transmitted includes the PDU that has been distributed to the a PDU that is not transmitted to the base station in a PDU transmitted by the cellular network link and the WLAN link,

In a tenth aspect, the present invention provides a WT, including:

An acquiring unit, configured to acquire measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link;

a generating unit, configured to generate a link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link, if the measurement information acquired by the acquiring unit meets a preset abnormality determining condition;

And a sending unit, configured to send the link abnormality indication to the base station.

In a first possible implementation of the tenth aspect,

The sending unit is specifically configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.

In an eleventh aspect, the present invention provides an access point AP, including:

a monitoring unit, configured to monitor a packet loss rate, where the packet loss rate is used to represent a rate at which the AP fails to forward the PDU;

a generating unit, configured to generate a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link occurs, when the packet loss rate monitored by the monitoring unit is greater than or equal to a preset packet loss rate threshold abnormal;

And a sending unit, configured to send, to the base station, the link abnormality indication generated by the generating unit.

In a first possible implementation of the eleventh aspect,

The sending unit is configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication generated by the generating unit.

In a twelfth aspect, the present invention provides an AP, including:

a determining unit, configured to determine a sequence number SN of the data packet that is transmitted to the WLAN link transmission failure, the data packet includes at least one PDU, and the SN of the data packet is used to determine whether an abnormality occurs in the WLAN link;

And a sending unit, configured to send a status report to the base station, where the status report includes an SN of the data packet determined by the determining unit.

In a first possible implementation manner of the twelfth aspect, the AP further includes a receiving unit,

The receiving unit is configured to receive, before the determining unit determines that the SN of the data packet that is transmitted to the WLAN link transmission fails, the data packet sent by the base station, where the data packet includes the data packet SN;

The determining unit is specifically configured to determine an SN of the data packet according to a packet header of the data packet.

In a thirteenth aspect, the present invention provides a base station, including:

a processor, configured to acquire a link abnormality indication, and stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and to the UE by using the cellular network link And sending the PDU to be transmitted, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link.

In a first possible implementation of the thirteenth aspect,

The processor is specifically configured to generate the link abnormality indication when it is determined that the WLAN link is abnormal.

In conjunction with the first possible implementation of the thirteenth aspect, in a second possible implementation,

The processor is specifically configured to determine a retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, and if the retransmission PDU that is distributed to the WLAN link transmission meets a preset condition, determine The WLAN link is abnormal.

The retransmitted PDU distributed to the WLAN link transmission has a PDU whose retransmission number is greater than or equal to a preset first threshold, or the distribution to the WLAN link transmission The ratio of the number of transmitted retransmission PDUs to the total number of PDUs transmitted to the WLAN link is greater than or equal to a preset second threshold.

In conjunction with the second possible implementation of the thirteenth aspect, in a third possible implementation manner,

The processor is further configured to distribute the PDU to be transmitted to the cellular network link and the WLAN chain before determining that the retransmission PDU of the WLAN link transmission is distributed in the at least one retransmission PDU And transmitting an identifier of the PDU transmitted to the WLAN link, and acquiring an identifier of the at least one retransmission PDU, and distributing the identifier to the WLAN chain according to the identifier of the at least one retransmission PDU The identifier of the PDU transmitted by the path determines the retransmission PDU that is distributed to the WLAN link transmission.

With reference to the third possible implementation manner of the thirteenth aspect, in a fourth possible implementation, the identifier of the at least one retransmission PDU acquired by the processor is a sequence number of the at least one retransmission PDU SN,

The processor is configured to receive a first status report sent by the UE, and obtain an SN of the at least one retransmitted PDU from the first status report, where the first status report includes the at least one An SN that retransmits a PDU.

With reference to the third possible implementation manner of the thirteenth aspect, in a fifth possible implementation, the identifier of the at least one retransmission PDU acquired by the processor is that the transmission to the WLAN link fails The SN of the data packet, the data packet including the at least one retransmission PDU,

The processor is specifically configured to receive a second status report sent by the AP, and obtain an SN of the data packet from the second status report, where the second status report includes an SN of the data packet.

In conjunction with the first possible implementation of the thirteenth aspect, in a sixth possible implementation,

The processor is configured to receive a measurement report, where the measurement report includes measurement information of the WLAN link, and if the measurement information meets a preset abnormality determination condition, determining that the WLAN link is abnormal.

In conjunction with the thirteenth aspect of the foregoing, in a seventh possible implementation,

The processor is specifically configured to receive a link abnormality message sent by the WT, where the link abnormality message carries the link abnormality indication.

In combination with the thirteenth aspect described above, in an eighth possible implementation manner,

The processor is specifically configured to receive a link abnormality message sent by the UE, where the link abnormality message carries the link abnormality indication.

In conjunction with the thirteenth aspect of the foregoing, in a ninth possible implementation manner,

The processor is specifically configured to receive a link abnormality message sent by the AP, where the link abnormality message carries the link abnormality indication.

In combination with the foregoing thirteenth aspect or the first possible implementation of the thirteenth aspect, to any one of the ninth possible implementation manners of the thirteenth aspect, the PDU to be transmitted includes already distributed a PDU that is not transmitted to the UE in the PDU of the cellular network link and the WLAN link,

The processor is configured to send a status report request to the UE, and receive a feedback status report sent by the UE, and send, by using the cellular network link, the status to the UE according to the feedback status report. a PDU that is not transmitted to the UE, the status report request is used to request the UE to feed back the PDU that is not transmitted to the UE, and the feedback status report is used to indicate the PDU that is not transmitted to the UE .

In combination with the foregoing thirteenth aspect or the first possible implementation of the thirteenth aspect to any one of the tenth possible implementations of the thirteenth aspect, in an eleventh possible implementation in,

The processor is further configured to control the UE to re-establish a WLAN link according to the link abnormality indication.

In a fourteenth aspect, the present invention provides a UE, including:

a processor, configured to generate a link abnormality indication when determining that the WLAN link is abnormal, and stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and Transmitting, by the cellular network link, the PDU to be transmitted to the base station, where the link abnormality indication is used to indicate that the WLAN link is abnormal.

In a first possible implementation manner of the fourteenth aspect, the UE further includes ,

The transceiver is configured to send the link abnormality indication generated by the processor to the base station, where the link abnormality indication is used by the base station to determine that the WLAN link is abnormal.

In conjunction with the fourteenth aspect of the foregoing or the first possible implementation of the fourteenth aspect, in a second possible implementation manner,

In conjunction with the second possible implementation of the fourteenth aspect, in a third possible implementation,

The processor is further configured to distribute the PDU to be transmitted to the cellular network link and the WLAN chain before determining that the retransmission PDU of the WLAN link transmission is distributed in the at least one retransmission PDU Transmitting, and recording a sequence number SN of the PDU transmitted by the WLAN link, and acquiring an SN of the at least one retransmission PDU, and distributing the SN according to the at least one retransmission PDU to the WLAN chain The SN of the PDU transmitted by the path determines the retransmission PDU that is distributed to the WLAN link transmission.

In conjunction with the fourteenth aspect of the foregoing or the first possible implementation of the fourteenth aspect, in a fourth possible implementation,

The processor is specifically configured to acquire measurement information of the WLAN link. If the measurement information meets a preset abnormality determination condition, the UE determines that the WLAN link is abnormal, and the measurement information is used. Determining whether an abnormality has occurred in the WLAN link.

In combination with the aforementioned fourteenth aspect or the first possible implementation of the fourteenth aspect To any one of the fourth possible implementations of the fourteenth aspect, in a fifth possible implementation, the PDU to be transmitted includes the already distributed to the cellular network link and the The PDU of the WLAN link is not transmitted to the PDU of the base station.

The processor is specifically configured to send a status report request to the base station, and receive a feedback status report sent by the base station, and send, by using the cellular network link, the status report to the base station according to the feedback status report. a PDU that is not transmitted to the base station, the status report request is used to request the base station to feed back the PDU that is not transmitted to the base station, and the feedback status report is used to indicate the PDU that is not transmitted to the base station. .

In a fifteenth aspect, the present invention provides a UE, including:

a processor, configured to receive a link abnormality message sent by the base station, where the link abnormality message carries the link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link;

The processor is further configured to stop distributing the protocol data unit PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and send the data to the base station by using the cellular network link The PDU to be transmitted.

In a first possible implementation of the fifteenth aspect,

The processor is further configured to: before receiving a link abnormality message sent by the base station, acquire measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link;

The processor is further configured to send a measurement report to the base station, where the measurement report includes measurement information of the WLAN link.

In conjunction with the fifteenth aspect of the foregoing or the first possible implementation of the fifteenth aspect, in a second possible internship mode, the PDU to be transmitted includes the already distributed to the cellular network link and the The PDU of the WLAN link is not transmitted to the PDU of the base station.

The processor is specifically configured to send a status report request to the base station, and receive a feedback status report sent by the base station, and send, by using the cellular network link, the status report to the base station according to the feedback status report. a PDU that is not transmitted to the base station, the status report request is used to request the base station to feed back the not transmitted to the base station a PDU, the feedback status report is used to indicate the PDU that is not transmitted to the base station.

In a sixteenth aspect, the present invention provides a WT comprising:

a processor, configured to acquire measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link;

The processor is further configured to generate a link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link, if the measurement information meets a preset abnormality determination condition;

And a transceiver, configured to send the link abnormality indication to the base station.

In a first possible implementation of the sixteenth aspect,

The transceiver is specifically configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.

In a seventeenth aspect, the present invention provides an AP, including:

The processor is configured to monitor a packet loss rate, and when the packet loss rate is greater than or equal to a preset packet loss rate threshold, generate a link abnormality indicator, where the packet loss rate is used to indicate that the AP fails to forward the PDU. a ratio, the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link;

And a transceiver, configured to send, to the base station, the link abnormality indication generated by the processor.

In a first possible implementation of the seventeenth aspect,

The transceiver is specifically configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication generated by the processor.

In an eighteenth aspect, the present invention provides an AP, including:

a processor, configured to determine a sequence number SN of a data packet that fails to be transmitted to the WLAN link, where the data packet includes at least one PDU, and the SN of the data packet is used to determine whether an abnormality occurs in the WLAN link;

And a transceiver, configured to send a status report to the base station, where the status report includes an SN of the data packet determined by the processor.

In a first possible implementation of the eighteenth aspect,

The transceiver is further configured to receive the data packet sent by the base station before the processor determines that the SN of the data packet transmitted to the WLAN link transmission fails, the data The packet header of the packet includes the SN of the data packet;

The processor is specifically configured to determine an SN of the data packet according to a packet header of the data packet.

According to a nineteenth aspect, the present invention provides a communication system, including:

The base station according to any one of the foregoing seventh aspect or the seventh aspect, the UE according to any of the foregoing eighth aspect or the eighth aspect, and the foregoing eleventh Aspect or the AP of the first possible implementation of the eleventh aspect; or

The base station according to any one of the foregoing seventh aspect, wherein the UE is as described in the eighth aspect or the possible implementation manner of the eighth aspect, and the twelfth Aspect or the AP of the first possible implementation of the twelfth aspect; or

The base station according to any one of the above-mentioned the thirteenth aspect, wherein the UE is as described in any one of the fourteenth aspect or the fourteenth aspect, and The AP described in the seventeenth aspect or the first possible implementation manner of the seventeenth aspect;

The base station according to any one of the above-mentioned the thirteenth aspect, wherein the UE is as described in any one of the fourteenth aspect or the fourteenth aspect, and The AP of the eighteenth aspect or the first possible implementation of the eighteenth aspect; or

The base station according to any one of the foregoing seventh aspect or the seventh aspect, the UE according to the eighth aspect or the eighth aspect, and the tenth aspect, Or the WT described in the first possible implementation of the tenth aspect; or,

The base station according to any one of the foregoing seventh aspect or the seventh aspect, the UE according to any one of the foregoing ninth aspect or the ninth aspect, and the tenth aspect Or the WT described in the first possible implementation of the tenth aspect; or,

As described in the thirteenth aspect or any of the possible implementations of the thirteenth aspect The base station according to any one of the fourteenth aspect or the fourteenth aspect, wherein the WT according to the sixteenth aspect or the first possible implementation of the sixteenth aspect ;

The base station according to any one of the above-mentioned the thirteenth aspect, or the possible implementation of the any one of the fifteenth aspect, The WT of the sixteenth aspect or the first possible implementation of the sixteenth aspect.

The method, device and system for processing a WLAN link abnormality in an MSA provided by the present invention can obtain a link abnormality indication, and stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication. And transmitting, by the cellular network link, the PDU to be transmitted to the UE, the link abnormality indication is used to indicate that the WLAN link is abnormal. The method, device, and system for processing a WLAN link abnormality in the MSA provided by the present invention can determine that an abnormality occurs in the WLAN link in the MSA, and avoids continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission. The PDU transmission fails, so that the PDUs in the MSA can be transmitted normally, thereby improving the transmission efficiency of the PDUs in the MSA.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is some embodiments of the invention.

FIG. 1 is a schematic diagram of a technology for performing MSA on a cellular network and a WLAN according to an embodiment of the present invention;

2 is a flowchart 1 of a method for processing a WLAN link abnormality in an MSA according to an embodiment of the present invention;

FIG. 3 is a second flowchart of a method for processing a WLAN link abnormality in an MSA according to an embodiment of the present disclosure;

4 is a flowchart 3 of a method for processing a WLAN link abnormality in an MSA according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a WLAN link abnormality in an MSA according to an embodiment of the present invention; Flow chart four of the law;

FIG. 6 is a flowchart 5 of a method for processing a WLAN link abnormality in an MSA according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a data packet according to an embodiment of the present disclosure;

FIG. 8 is a flowchart 6 of a method for processing a WLAN link abnormality in an MSA according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a PDU according to an embodiment of the present disclosure;

FIG. 10 is a flowchart 7 of a method for processing a WLAN link abnormality in an MSA according to an embodiment of the present disclosure;

FIG. 11 is a flowchart 8 of a method for processing a WLAN link abnormality in an MSA according to an embodiment of the present disclosure;

FIG. 12 is a schematic structural diagram 1 of a base station according to an embodiment of the present invention; FIG.

FIG. 13 is a second schematic structural diagram of a base station according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram 3 of a base station according to an embodiment of the present invention; FIG.

FIG. 15 is a schematic structural diagram 1 of a UE according to an embodiment of the present invention;

FIG. 16 is a second schematic structural diagram of a UE according to an embodiment of the present invention;

FIG. 17 is a schematic structural diagram 3 of a UE according to an embodiment of the present invention;

FIG. 18 is a schematic structural diagram 1 of an AP according to an embodiment of the present invention; FIG.

FIG. 19 is a second schematic structural diagram of an AP according to an embodiment of the present invention; FIG.

20 is a schematic structural diagram 3 of an AP according to an embodiment of the present invention;

FIG. 21 is a schematic structural diagram of hardware of a base station according to an embodiment of the present invention;

FIG. 22 is a first schematic structural diagram of a hardware structure of a UE according to an embodiment of the present invention;

FIG. 23 is a second schematic structural diagram of a hardware structure of a UE according to an embodiment of the present invention;

24 is a first schematic diagram of a hardware structure of an AP according to an embodiment of the present invention;

25 is a second schematic diagram of a hardware structure of an AP according to an embodiment of the present invention;

26 is a block diagram of a communication system according to an embodiment of the present invention;

FIG. 27 is a flowchart IX of a method for processing a WLAN link abnormality in an MSA according to an embodiment of the present disclosure;

FIG. 28 is a flowchart of processing an WLAN link abnormality in an MSA according to an embodiment of the present invention; Method flow chart ten;

FIG. 29 is a schematic structural diagram 4 of a UE according to an embodiment of the present invention; FIG.

FIG. 30 is a schematic structural diagram 5 of a UE according to an embodiment of the present invention;

FIG. 31 is a schematic structural diagram of a WT according to an embodiment of the present invention; FIG.

32 is a third schematic structural diagram of a hardware structure of a UE according to an embodiment of the present invention;

33 is a schematic structural diagram of hardware of a WT according to an embodiment of the present invention;

FIG. 34 is a block diagram of another communication system according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments.

Before describing the embodiments of the present invention, the techniques for performing MSA on a cellular network and a WLAN are briefly described. As the number of UEs continues to increase, the types of services that the UE can support are also rapidly increasing, so that the edge throughput of the current wireless network cannot meet the needs of users. Therefore, in order to improve the edge throughput of the wireless network, MSA technology is applied to the cellular network and the WLAN, and some services that do not require high transmission delay, such as downloading and uploading, may distribute part of the data of the services to the WLAN. Link transmission, part of the distribution to the cellular network link transmission, thereby improving the edge throughput of the wireless network.

In the existing MSA, only the scheme of how the transmitting end determines the radio link failure of the cellular network link link does not involve the scheme of how the transmitting end determines that the WLAN link is abnormal, therefore, In the MSA, there is no guarantee that the data will be transmitted normally. Specifically, when an abnormality occurs in the WLAN link, the transmitting end continues to distribute data to the WLAN link transmission, which may cause data transmitted through the WLAN link to be continuously retransmitted until the data is on the WLAN link. The number of retransmissions reaches the preset maximum value, and is discarded by the transmitting end, and the data transmission fails.

In order to ensure that the data can be transmitted normally in the MSA, the embodiment of the present invention provides a method, a device, and a system for processing a WLAN link abnormality in the MSA, which can determine that an abnormality occurs in the WLAN link in the MSA, thereby ensuring normal data transmission. .

Further, in the embodiment of the present invention, when performing MSA on the cellular network and the WLAN, the transmitting end may distribute the protocol data unit (English: protocol data unit, PDU) on the RLC layer entity of the transmitting end, and the receiving end The received PDU is aggregated on the RLC layer entity of the receiving end; the transmitting end may also use the packet data convergence protocol (PDCP) layer entity on the transmitting end to the protocol data unit (English: protocol data unit) The abbreviation: PDU) is distributed, and the receiving end aggregates the received PDUs on the PDCP layer entity of the receiving end, and the present invention is not limited.

For example, the PDU is distributed on the RLC layer entity of the sending end, and the receiving end aggregates the received PDU on the RLC layer entity of the receiving end, as shown in FIG. 1 , which is provided by the embodiment of the present invention. A schematic diagram of MSA for cellular networks and WLANs. When the transmitting end distributes the PDU to the cellular network link and the WLAN link for transmission on the RLC layer entity of the transmitting end, media access control of the RLC layer entity and the WLAN at the transmitting end is required (English: media access control, abbreviation: MAC) An interface is added between the layer entities, and the interface is used by the transmitting end to send the PDU distributed by the RLC layer entity to the MAC layer entity of the WLAN, so that the transmitting end can transmit the PDU distributed to the WLAN link through the WLAN link. When the receiving end performs PDU aggregation on the RLC layer entity of the receiving end, it also needs to add an interface between the RLC layer entity of the receiving end and the MAC layer entity of the WLAN, and the interface can be used for the RLC layer entity of the receiving end to receive the WLAN link. The transmitted PDU, and in turn, the receiving end can aggregate the received PDU transmitted over the WLAN link with the received PDU transmitted over the cellular network.

Further, in the embodiment of the present invention, a determining function module is further added to the RLC layer entity of the sending end, where the function module is configured to determine whether the retransmitted PDU is transmitted by the transmitting end to the cellular network link, or is sent. Whether the number of retransmissions of the PDUs to be retransmitted to be transmitted to the WLAN link and the number of retransmissions of the PDUs to be retransmitted to reach the preset maximum number of retransmissions, or the number of PDUs that need to be retransmitted to be distributed to the WLAN link Whether the ratio exceeds the preset maximum ratio, so that the transmitting end can perform corresponding operations according to the result of the function module judgment.

The foregoing RLC layer entity can be understood as a processing module of the RLC layer in the network. The PDCP layer entity can be understood as a processing module of the PDCP layer in the network, and the MAC layer entity can be understood as a processing module of the MAC layer in the network.

Further, in the downlink (English: downlink, abbreviation: DL), the PDU to be transmitted by the base station is distributed to the cellular network link and the WLAN link is sent to the UE. In the uplink (English: uplink, abbreviation: UL), the PDU to be transmitted by the UE is distributed to the cellular network link and the WLAN link is sent to the base station.

It should be noted that, in this embodiment, the RLC layer entities of the transmitting end and the receiving end all work in the confirm mode. The acknowledgment mode means that the transmitting end distributes the PDU to be transmitted to the cellular network link and the WLAN link to the receiving end, and the receiving end returns a status report to the transmitting end according to the receiving condition of the PDU, wherein the status is reported. The report is used to indicate the PDU that was successfully transmitted and the PDU that was not successfully transmitted. After receiving the status report sent by the receiving end, the sending end initiates retransmission according to the PDU that is not successfully transmitted indicated in the status report.

Specifically, when the receiving end receives the PDU sent by the sending end, the receiving end sorts the received PDU. In the process of the receiving end receiving the PDUs received by the receiving end, if the receiving end detects that it fails to receive a certain PDU in sequence, the receiving end starts the reordering timer, if the reordering timer expires, If the receiving end does not receive the PDU, the receiving end sends a status report to the sending end through the cellular network link. The status report carries a retransmission request, and is used to request the transmitting end to retransmit the PDU. After receiving the status report to the sending end through the cellular network link, the receiving end restarts the reordering timer. If the receiving end still does not receive the PDU after the reordering timer expires, the receiving end sends the next PDU to the transmitting end. The status report still carries the retransmission request for the PDU until the receiving end successfully receives the PDU; or the transmitting end detects that the number of retransmissions of the PDU reaches the preset maximum number of retransmissions, then the cellular network is considered to have wireless The link failed.

Optionally, the cellular network in the embodiment of the present invention may be an LTE network, a LTE subsequent evolved network, a universal mobile telecommunications system (UMTS), and the like. Correspondingly, the base station in the embodiment of the present invention may be an evolved base station (English: evolved-NodeB, abbreviated as eNB), a similar base station device in the LTE subsequent evolved network, or a base station in the UMTS. device.

The UE in the embodiment of the present invention is static or mobile, for example, a station (English: Station), a mobile station (English: Mobile Station), a personal computer (English: Personal Computer), a laptop computer (English) :Laptop Computer), Tablet Computer (English: Tablet Computer), Netbook (English: Netbook), Terminal (English: Terminal), Cellular Phone (English: Cellular Phone), Cordless Phone (English: Cordless Phone), Personal Digital Assistant ( English: Personal Digital Assistant, abbreviation: PDA), data card (English: Data Card), universal serial bus (English: Uninersal SerialBus, abbreviation: USB) plug-in device, mobile WiFi hotspot device (English: MiFi Devices), smart watch , smart glasses, wireless modem (English: Modem), wireless router, wireless local loop (English: Wireless Local Loop, abbreviation: WLL) station.

Embodiment 1

An embodiment of the present invention provides a method for processing a WLAN link abnormality in an MSA. As shown in FIG. 2, the method may include:

S101. The base station acquires a link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link.

Specifically, in a possible implementation manner, the base station may obtain the link abnormality indication carried in the abnormal link message by receiving the link abnormality message, where the link abnormality message may be sent to the base station by the UE, or The AP is sent to the base station and can also be sent to the base station for the WT. In another possible implementation manner, the base station may generate the link abnormality indication after determining that the WLAN link is abnormal.

Further, the specific process of the base station receiving the link abnormality message sent by the WT, the UE, or the AP, and the specific process of the base station determining that the WLAN link is abnormal and generating the link abnormality indication are described in detail in the following embodiments. I will not repeat them here.

It is to be noted that the base station determines that the WLAN link is abnormal. In the embodiment of the present invention, the base station may determine that the WLAN link is abnormal according to the retransmitted PDU transmitted to the WLAN link. An abnormality occurs in the WLAN link according to the received measurement report.

Further, the following is an example in which the base station determines that the WLAN link is abnormal according to the received measurement report, and the base station determines that the WLAN link is abnormal.

In the embodiment of the present invention, the WLAN terminal (English: WLAN Termination, abbreviated as WT) can perform information exchange between the base station and the AP. Therefore, the base station can receive the measurement report sent by the WT.

Specifically, the measurement report sent by the WT includes measurement information of the WLAN link. After receiving the measurement report sent by the WT, the base station determines whether the measurement information included in the measurement report satisfies a preset abnormality determination condition.

Exemplarily, the measurement information may include information that the WT reads from the AP of the WLAN link, such as backhaul data rates of the WLAN link and channel utilization. The measurement information may also include the number of retransmission PDUs that the AP initiates retransmission to the UE, the number of PDUs that the AP transmits to the UE, or the rate at which the AP sends data to the UE. The WT measures the AP. After getting the information. The measurement information may also include an SN of the retransmitted data packet that the WT requests to the base station to retransmit.

It should be noted that when the base station sends a PDU to the WT, the PDU distributed to the WLAN link is packaged into multiple data packets and sent to the WT, and each of the multiple data packets is allocated a continuous packet. And the only SN. After the WT receives the data packet sent by the base station, if the WT determines that the SN of the data packet received this time is not continuous with the SN of the last received data packet, the WT may determine that the data packet transmission sent by the base station to the WT fails. And the WT can determine which particular packet transmission failures according to the continuity of the data packets it receives, so that the WT can determine to request the base station to retransmit those data packets.

After receiving the measurement report sent by the WT, the base station determines whether the measurement information carried in the measurement report meets the preset abnormality determination condition.

Exemplarily, when the measurement information includes a backhaul transmission data rate and a channel utilization ratio of the WLAN link, the preset abnormality determination condition may include a preset minimum threshold value of the backhaul transmission data rate and a preset channel. The minimum threshold for utilization. If the base station determines that the received backhaul data rate is less than a minimum threshold of the preset backhaul data rate, and/or the base station determines that the received channel utilization is less than the preset channel The minimum threshold of the utilization rate, the base station can determine that the measurement information meets the preset abnormality determination condition.

When the measurement information includes the number of PDUs that the AP initiates retransmission to the UE, the number of PDUs that the AP transmits to the UE, or the rate at which the AP sends data to the UE, the abnormality determination condition may include allowing retransmission The maximum number of PDUs, the maximum number of PDUs that are allowed to transmit, or the minimum rate at which the AP is allowed to send data to the UE. If the base station determines that the number of retransmitted PDUs that it receives is greater than the maximum number of PDUs that are allowed to be retransmitted, the base station determines that the number of PDUs that the transmission fails to receive is greater than the maximum number of PDUs that are allowed to transmit, Or the base station determines that the rate at which the AP sends data to the UE is less than the minimum rate at which the AP is allowed to send data to the UE, and the base station may determine that the received measurement information satisfies the abnormality determination condition.

When the measurement information includes the SN of the retransmitted data packet, the abnormality determination condition may include the maximum number of data packets allowed to be retransmitted. If the base station determines that the number of SNs of the retransmitted data packet it receives is greater than the maximum number of data packets that are allowed to be retransmitted, the base station may determine that the received measurement information satisfies the abnormality determination condition.

Further, when the base station determines that the measurement information included in the measurement report sent by the WT satisfies a preset abnormality determination condition, the base station may determine that the WLAN link is abnormal, and the base station generates a link abnormality indication.

Optionally, the base station may also receive the measurement report sent by the UE, and determine that the WLAN link is abnormal according to the measurement report sent by the UE. The measurement report includes measurement information of the WLAN link. The measurement information may include the information obtained by the UE in the beacon frame sent by the AP, such as the backhaul transmission data rate and the channel utilization of the WLAN link, and may further include the UE measuring the beacon frame. The received received signal strength indication (English: received signal strength indication, abbreviation: RSSI).

Further, after the base station receives the measurement report sent by the UE, the base station determines whether the measurement information carried in the measurement report satisfies a preset abnormality determination condition. The preset abnormality determining condition may include a preset minimum threshold value of the backhaul transmission data rate, a preset minimum threshold value of the channel utilization, a preset minimum RSSI threshold, and the like. When the base station determines that the received backhaul transmission data rate is less than the preset backhaul transmission number According to the minimum threshold of the rate, and/or the minimum threshold value of the channel utilization preset by the channel utilization received by the base station, and/or the RSSI received by the base station is less than the minimum threshold of the preset RSSI The base station can determine that the measurement information meets the preset abnormality determination condition, so that the base station determines that the WLAN link is abnormal, and the base station generates a link abnormality indication.

Optionally, after receiving the measurement report sent by the WT and the UE, the base station may determine that each measurement information in the measurement report sent by the WT meets a preset abnormality determination condition, and the measurement report sent by the UE When each measurement information also satisfies a preset abnormality determination condition, it is determined that an abnormality occurs in the WLAN link, and then the base station generates a link abnormality indication.

S102. The base station stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the PDU to be transmitted to the UE by using the cellular network link.

In the embodiment of the present invention, after the base station determines that the WLAN link is abnormal, the base station may stop distributing the PDU to be transmitted to the cellular network link and the WLAN chain according to the link abnormality indication in the DL. The eNB transmits the PDU to be transmitted to the UE through the cellular network link, so as to ensure that the eNB successfully transmits the PDU to be transmitted to the UE, thereby preventing the eNB from continuously distributing the PDU to be transmitted to the abnormality. The WLAN link transmission causes the PDU transmission transmitted to the WLAN link to fail.

Further, after the base station stops the MSA according to the link abnormality indication, the base station can also control the UE to reconstruct the WLAN link, and after completing the process of reestablishing the WLAN link, the base station continues to distribute the PDU to be transmitted to the cellular network link and reconstruct The WLAN link transmission, that is, the base station restarts the MSA, so that the PDUs transmitted to the reconstructed WLAN link can be normally transmitted.

In the UL, after the base station determines the abnormality of the WLAN link by obtaining the link abnormality indication, the base station may also instruct the UE to stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication. That is, after the base station instructs the UE to stop the MSA, and after the UE stops the MSA, the UE may send the to-be-transmitted to the base station through the cellular network link. PDU to ensure that the base station can normally receive the PDU sent by the UE.

Further, after the base station instructs the UE to stop the MSA, the base station is further configured to control the UE to reestablish the WLAN link, and after the UE completes the process of reestablishing the WLAN link, the base station instructs the UE to continue to distribute the PDU to be transmitted to the cellular network link and reconstruct The WLAN link transmission, that is, instructs the UE to restart the MSA. Or after the base station controls the UE to complete the process of reestablishing the WLAN link, the UE continues to distribute the PDU to be transmitted to the cellular network link and the reconstructed WLAN link transmission, that is, the UE restarts the MSA.

Wherein, the PDU to be transmitted may include a PDU that is not distributed to the cellular network link and transmitted by the WLAN link; and a PDU that has been distributed to the cellular network link and transmitted by the WLAN link but fails to be transmitted, that is, waiting for retransmission A PDU, which can be called a retransmission PDU.

Alternatively, the PDU to be transmitted may further include a PDU that is not distributed to the cellular network link and transmitted by the WLAN link, and a PDU that has been distributed to the cellular network link and the PDU transmitted by the WLAN link that is not transmitted to the UE. The PDU that is not transmitted to the UE includes a retransmission PDU, a PDU that has been distributed to the WLAN link but is not transmitted to the UE, and a PDU that has been distributed to the cellular network link but is not transmitted to the UE, that is, the PDU that the UE does not receive. .

Specifically, there are multiple implementation manners for the base station to control the UE to re-establish the WLAN link. In the embodiment of the present invention, three possible implementation manners are provided (method 1, method 2, and mode 3). The process of the road is explained. The embodiment of the present invention may also adopt any other type of base station to control the manner in which the UE re-establishes the WLAN link, which is not enumerated here.

Manner 1: After the MSA stops, the base station instructs the UE to disconnect the AP from the AP of the WLAN link where the abnormality occurs, and instructs the UE to scan the AP around the UE. After the UE scans the at least one AP, the UE sends the identifier of the at least one AP to the base station, and the base station instructs the at least one AP to report the measurement information according to the identifier of the at least one AP, so as to learn the channel quality and the network of the at least one AP. The information such as the load is used to evaluate the quality of service that the UE may obtain under the at least one AP, including transmission delay and data throughput. Finally, an AP that selects an access condition that satisfies the UE for the UE from the plurality of APs indicates UE access.

The AP that meets the access condition of the UE may be guaranteed to be the UE. Provides large data throughput, or an AP that can meet the transmission delay requirements of the UE. Of course, the access conditions of the foregoing UE are merely exemplary, and the present invention includes but is not limited to the access conditions of the foregoing UE.

Specifically, the method for the base station to indicate that the UE accesses the AP may be that the base station sends the identifier of the AP that is determined by the base station to meet the access condition of the UE, to indicate that the UE accesses the AP, thereby completing the process of reestablishing the WLAN link.

It should be noted that, if the UE does not scan the AP around the UE, or if at least one AP reported by the UE does not meet the AP access condition, the eNB may continue to pass the PDU to be transmitted through the cellular network link in the DL. Send to the UE to ensure that the PDU to be transmitted can be transmitted normally. In the UL, the UE may continue to transmit the PDU to be transmitted through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted.

Manner 2: After the MSA stops, the base station instructs the UE to disconnect the AP from the AP of the WLAN link where the abnormality occurs, and performs channel quality, network load, and the like for each AP of all APs that have a link with the base station. The information is evaluated, and an AP that satisfies the access condition of the UE is selected from all APs.

Specifically, the base station may send the identifier of the AP that is determined by the base station to meet the access condition of the UE to the UE, and instruct the UE to scan the AP indicated by the identifier of the AP sent by the base station of the UE, so that the UE scans the UE. The signal strength of the AP is selected from the AP scanned by the UE to access the AP with the strongest signal strength.

Specifically, when the UE scans multiple APs in the AP indicated by the identifier of the AP that the base station sends to the UE, the UE may randomly select one AP access from the multiple APs.

The access conditions of the UE described in this mode are the same as those of the UE described in the first method, and are not described here.

It should be noted that, when the UE does not scan all the APs in the AP indicated by the identifier of the AP that the base station sends to the UE, in the DL, the base station may continue to transmit the PDU to be transmitted through the cellular network link to ensure that the AP is to be transmitted. The PDU can be transmitted normally. In the UL, the UE may continue to transmit the PDU to be transmitted through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted.

Mode 3, after the MSA stops, the base station instructs the UE to disconnect from the WLAN where the abnormality occurs. a connection between APs of a link, and information such as channel quality or network load of each AP of all APs having a link with the base station, and relative to each AP of the all APs The location judges to select one of all APs that satisfies the access condition of the UE and the relative location with the UE is the smallest to indicate UE access.

The access conditions of the UE and the method for the base station to indicate that the UE accesses the AP are the same as the method for the UE to access the AP, and the method for the UE to access the AP is not described here.

It should be noted that, when the base station determines, from all the APs, that the AP does not meet the access conditions of the UE, in the DL, the base station continues to transmit the PDU to be transmitted through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted. . In the UL, the base station instructs the UE to continue to transmit the PDU to be transmitted through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted.

Optionally, in the first mode, the second mode, and the third mode, after the MSA stops, the base station may also indicate that the AP of the abnormal WLAN link disconnects from the UE, and instructs the UE to reestablish the WLAN link. The method for the specific base station to control the UE to reconstruct the WLAN link has been described in detail above, and details are not described herein again.

It should be noted that, in the foregoing manner 1, after the UE disconnects the AP from the AP of the WLAN link where the abnormality occurs, the UE may also scan the AP around the UE by itself. Specifically, the triggering condition for the UE to scan the APs around the UE may be designed according to actual conditions, which is not limited by the present invention.

Further, it is worth noting that the base station stops transmitting the PDU to be transmitted to the cellular network link and the WLAN link, and then sends the PDU to be transmitted to the UE through the cellular network link, which may include not yet being distributed to the UE. The cellular network link and the PDU transmitted by the WLAN link, as well as the PDUs that have been transmitted to the cellular network link and the PDUs transmitted by the WLAN link that are not transmitted to the UE, are transmitted to the UE through the cellular network link.

Specifically, after the base station stops distributing the PDU to be transmitted to the cellular network link and the WLAN link is transmitted, the base station may send a status report request to the UE to request the UE to feed back the PDU that is not transmitted to the UE to the base station. After receiving the status report request, the UE may determine, according to the SN of the already received PDU, which PDUs of the UE are not received. That is, the PDU that is not transmitted to the UE is determined, and then a feedback status report is generated according to the SN of the PDU that is not transmitted to the UE determined by the UE.

Exemplarily, if the PDU to be transmitted refers to a PDCP PDU, that is, the PDU to be transmitted by the base station on the PDCP layer entity, and the UE aggregates the PDUs sent by the received base station on the PDCP layer entity, the base station sends the PDU to the UE. The status report can be a PDCP status report. After receiving the PDCP status report request sent by the base station, the UE determines the SN of the PDCP PDU that the UE does not receive according to the SN of the PDCP PDU and the SN continuity of the PDCP PDU, and determines the unreceived PDCP PDU according to the SN. The SN generates a PDCP feedback status report and sends the PDCP feedback status report to the base station to indicate which PDCP PDUs of the base station are not transmitted to the UE.

Further, the specific manner in which the UE generates the feedback status report according to the SN of the PDU that has been received by the UE may be referred to the related description in the prior art, and details are not described herein again.

Further, after receiving the feedback status report sent by the UE, the base station determines, according to the indication of the feedback status report, the PDU that is not transmitted to the UE, and determines the PDU that is not transmitted to the UE, and has not been distributed to the cellular network. Both the link and the PDU transmitted by the WLAN link are sent to the UE over the cellular network link.

The method for processing a WLAN link abnormality in an MSA according to the embodiment of the present invention includes: the base station can obtain a link abnormality indication, and stops distributing the PDU to be transmitted to the cellular network link and the WLAN link according to the link abnormality indication. Transmitting, and transmitting, by the cellular network link, a PDU to be transmitted to the UE, the link abnormality indication being used to indicate that the WLAN link is abnormal. With the method, the base station can obtain the link abnormality indication, and determine that the WLAN link is abnormal according to the link abnormality indication, so that the base station can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication. And transmitting the PDU to be transmitted to the UE through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted, thereby preventing the base station from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, thereby being distributed to the WLAN. The PDU transmission of the link transmission failed.

An embodiment of the present invention provides a method for processing a WLAN link abnormality in an MSA. As shown in FIG. 3, the method may include:

S201. When the UE determines that the WLAN link is abnormal, the UE generates a link abnormality indication. The link abnormality indication is used to indicate that an abnormality occurs in the WLAN link.

Specifically, when the UE distributes the PDU to be transmitted to the cellular network link and the WLAN link transmits to the base station, the UE may determine that the WLAN link is abnormal according to the retransmission PDU that is transmitted to the WLAN link, and generate Link exception indication.

Further, the specific process of the UE determining that the WLAN link is abnormal according to the retransmission PDU that is transmitted to the WLAN link and generating the link abnormality indication is described in detail in the following embodiments, and details are not described herein again.

Optionally, the UE may further determine whether the WLAN link is abnormal according to the measurement information of the WLAN link acquired by the UE.

Specifically, there are multiple ways for the UE to obtain measurement information of the WLAN link. Exemplarily, the UE may acquire measurement information of the WLAN link by receiving a beacon frame sent by the AP. The measurement information may include information about a backhaul transmission data rate, a channel utilization rate, and the like of the WLAN link carried in the beacon frame. The RSSI obtained after the UE measures the beacon frame may also be included.

The UE may also obtain measurement information of the WLAN link by performing measurement on the WLAN module of the UE. For example, the UE may detect the number of PDUs that the WLAN module initiates retransmission, or the number of PDUs that the WLAN module still fails to transmit after multiple retransmissions, that is, the measurement information may include the number of retransmitted PDUs or the transmission. The number of failed PDUs. The UE may determine the rate at which the WLAN module sends data to the base station by detecting a change of the buffer capacity of the WLAN module of the UE, that is, the measurement information may further include a rate at which the WLAN module sends data to the base station.

Further, after acquiring the measurement information of the WLAN link, the UE determines whether the measurement information meets a preset abnormality determination condition. The preset abnormality determining condition may include, but is not limited to, a preset minimum threshold value of the backhaul transmission data rate, a preset minimum threshold value of the channel utilization, a preset threshold value of the RSSI, and a weight tolerance. One or more of the maximum number of transmitted PDUs, the maximum number of PDUs that are allowed to fail to transmit, the minimum rate at which the WLAN module is allowed to transmit data to the base station, and the like.

Exemplarily, if the measurement information includes information about the backhaul transmission data rate, channel utilization, and the like, and the RSSI obtained by the UE, when the UE determines the acquired backhaul transmission data rate. The minimum threshold value of the preset backhaul transmission data rate is less than the minimum threshold value of the preset channel utilization, and/or the RSSI acquired by the UE is smaller than the preset minimum RSSI threshold. The UE can determine that the measurement information acquired by the UE meets the abnormality determination condition, so that the UE determines that the WLAN link is abnormal, and is no longer suitable for the MSA, and the UE generates a link abnormality indication.

If the measurement information includes the number of retransmitted PDUs, the number of PDUs that failed to transmit, or the rate at which the WLAN module sends data to the base station, when the UE determines that the number of retransmitted PDUs detected by the UE is greater than the allowed retransmission The maximum number of PDUs, the number of PDUs detected by the UE that are failed to be transmitted is greater than the maximum number of PDUs that are allowed to be transmitted, or the rate at which the UE detects that the WLAN module of the UE sends data to the base station is smaller than the allowed WLAN module. When the minimum rate of data is sent to the base station, the UE may determine that the measurement information acquired by the UE meets the abnormality determination condition, so that the UE determines that the WLAN link is abnormal, and is no longer suitable for the MSA, and the UE generates a link abnormality indication. .

S202. The UE stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the PDU to be transmitted to the base station through the cellular network link.

The PDU to be transmitted includes a PDU that the UE has not distributed to the cellular network link and the WLAN link transmits to the base station, and retransmits the PDU.

Alternatively, the PDU to be transmitted may further include a PDU that is not distributed to the cellular network link and transmitted by the WLAN link, and a PDU that has been distributed to the cellular network link and the PDU transmitted by the WLAN link that is not transmitted to the base station. The PDUs that are not transmitted to the base station include retransmitted PDUs, PDUs that have been distributed to the WLAN link but are not transmitted to the base station, and PDUs that have been distributed to the cellular network link but are not transmitted to the base station, that is, PDUs that are not received by the base station. .

Specifically, after the UE determines that the WLAN link is abnormal and generates a link abnormality indication, the UE stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and passes the cellular network. The link sends the PDU to be transmitted to the base station to ensure that the UE can successfully send the PDU to be transmitted to the base station, thereby preventing the UE from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, resulting in being distributed to the PDU. The PDU transmission of the abnormal WLAN link transmission failed.

It is to be noted that, in the embodiment of the present invention, after the UE stops transmitting the PDU to be transmitted to the cellular network link and the WLAN link, the PDU to be transmitted is sent to the base station through the cellular network link, which may specifically include PDUs that have not been distributed to the cellular network link and transmitted by the WLAN link, and PDUs that have been distributed to the cellular network link and PDUs transmitted by the WLAN link that are not transmitted to the base station, are transmitted to the base station through the cellular network link .

Specifically, after the UE stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission, the UE may send a status report request to the base station to request the base station to feed back the PDU that is not transmitted to the base station to the UE. After receiving the status report request, the base station may determine, according to the SN of the received PDU, which PDUs of the base station are not received, that is, determine the PDU that is not transmitted to the base station, and then transmit to the base station according to the determined base station. The SN of the PDU generates a feedback status report.

Exemplarily, if the PDU to be transmitted refers to a PDCP PDU, that is, the PDU to be transmitted by the UE on the PDCP layer entity, and the PDCP layer entity of the base station aggregates the PDUs sent by the UE, the status report sent by the UE to the base station is reported. Can report for PDCP status. After receiving the status report request sent by the UE, the base station determines the SN of the PDCP PDU that the base station does not receive according to the continuity of the SN of the PDCP PDU and the PN of the PDCP PDU, and determines the unreceived PDCP PDU according to the eNB. The SN generates a PDCP feedback status report and sends the PDCP feedback status report to the UE to indicate to the UE which PDCP PDUs are not transmitted to the base station.

Further, the specific manner in which the base station generates the feedback status report according to the SN of the received PDU, and the related description in the related art, and details are not described herein again.

Further, after receiving the feedback status report sent by the base station, the UE determines, according to the indication of the feedback status report, the PDU that is not transmitted to the base station, and determines the PDU that is not transmitted to the base station, and has not been distributed to the cellular network. Both the link and the PDU transmitted by the WLAN link are transmitted to the base station through the cellular network link.

Further, in the embodiment of the present invention, after the UE generates the link abnormality indication, the UE may further send the link abnormality indication to the base station, indicating that the WLAN link of the base station is different. Often, the base station performs a corresponding operation after determining that the WLAN link is abnormal. For example, after the base station determines that the WLAN link is abnormal according to the link abnormality indication sent by the UE, the base station can control the UE to reestablish the WLAN link.

Specifically, the base station controls the UE to re-establish the WLAN link. For details, refer to the related description in the embodiment shown in Figure 2, and details are not described herein.

Further, if the UE completes the process of reestablishing the WLAN link under the control of the base station, the UE continues to distribute the PDU to be transmitted to the cellular network link and the reconstructed WLAN link transmission, thereby being distributed to the reconstructed WLAN chain. The PDUs transmitted in the road can be transmitted normally. If the UE fails to reestablish the WLAN link under the control of the base station, the UE continues to send the PDU to be transmitted to the base station through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted.

The method for processing a WLAN link abnormality in the MSA provided by the embodiment of the present invention specifically includes: when the UE determines that the WLAN link is abnormal, the UE generates a link abnormality indication, and stops distributing the PDU to be transmitted according to the link abnormality indication. Transmitting to the cellular network link and the WLAN link, and transmitting the PDU to be transmitted to the base station through the cellular network link, and transmitting the link abnormality indication to the base station, where the link abnormality indication is used to indicate that the WLAN link is abnormal. . With this method, the UE can determine that the WLAN link is abnormal, and generate a link abnormality indication, so that the UE can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication, and The eNB sends the PDU to be transmitted to ensure that the PDU to be transmitted can be transmitted normally, thereby preventing the UE from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, and the PDU transmission transmitted to the WLAN link fails. .

An embodiment of the present invention provides a method for processing a WLAN link abnormality in an MSA. As shown in FIG. 27, the method may include:

S801. The UE receives a link abnormality message sent by the base station, where the link abnormality message carries a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal.

Specifically, in the embodiment of the present invention, after the base station determines that the WLAN link is abnormal according to the received measurement report, and generates a link abnormality indication, the base station sends the link abnormality indication in the link abnormality message. To the UE, so that the UE can be based on the base station The indication determines that an abnormality has occurred in the WLAN link.

The measurement report received by the base station may be sent by the WT to the base station, or may be sent by the UE to the base station. It should be noted that, in the UL, if the base station determines whether the WLAN link is abnormal according to the measurement report sent by the WT, the WT may read the backhaul transmission data rate and channel of the WLAN link from the AP of the WLAN link. Measuring information such as utilization rate, and carrying the measurement information in the measurement report and transmitting to the base station, so that the base station determines whether the WLAN link is abnormal according to the measurement report.

Specifically, the method for determining whether the WLAN link is abnormal according to the measurement report sent by the eNB can be referred to the related description in the embodiment shown in FIG. 2, and details are not described herein again.

S802. The UE stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the PDU to be transmitted to the base station through the cellular network link.

The PDU to be transmitted includes PDUs that are not distributed to the cellular network link and transmitted by the WLAN link, and PDUs that have been distributed to the WLAN link and are not transmitted to the base station. The PDU that is not transmitted to the base station includes a retransmission PDU and a PDU that has been distributed to the WLAN link but has not been transmitted to the base station.

After receiving the link abnormality message sent by the base station, the UE stops distributing the PDU to be transmitted to the cellular network link and the WLAN link according to the link abnormality indication carried in the link abnormal message, and passes the cellular network. The link sends the PDU to be transmitted to the base station to ensure that the UE can successfully transmit the PDU to be transmitted to the base station, thereby preventing the UE from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, resulting in being abnormally distributed. The PDU transmission of the WLAN link transmission failed.

Specifically, the specific manner in which the UE stops transmitting the PDU to be transmitted to the cellular network link and the WLAN link, and sends the PDU to be transmitted to the base station through the cellular network link, and the embodiment in the embodiment shown in FIG. 3 After the UE stops transmitting the PDU to be transmitted to the cellular network link and the WLAN link, the PDUs to be transmitted are sent to the base station through the cellular network link in the same manner, and may participate in the relevant embodiment in FIG. Description, no longer repeat here.

Further, in the embodiment of the present invention, after the base station generates a link abnormality indication and determines that the WLAN link is abnormal, the base station can control the UE to reestablish the WLAN link. If the UE completes the process of reestablishing the WLAN link under the control of the base station, the UE continues to distribute the PDU to be transmitted to the cellular network link and the reconstructed WLAN link transmission, so that the transmission is distributed to the reconstructed WLAN link. The PDU can be transmitted normally. If the UE fails to reestablish the WLAN link under the control of the base station, the UE continues to send the PDU to be transmitted to the base station through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted.

For the implementation of the method for the UE to re-establish the WLAN link, refer to the related description in the embodiment shown in Figure 2, and details are not described herein.

Optionally, before the foregoing S801, the method may further include:

S800a: The UE acquires measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link.

Specifically, the UE may obtain measurement information of the WLAN link by receiving a beacon frame sent by the AP. The measurement information may include a backhaul transmission data rate, a channel utilization rate, and the like of the WLAN link carried in the beacon frame. The measurement information may further include an RSSI obtained after the UE measures the beacon frame.

S800b: The UE sends a measurement report to the base station, where the measurement report includes measurement information of the WLAN link.

After acquiring the measurement information of the WLAN link, the UE carries the measurement information in the measurement report and sends the measurement information to the base station, so that the base station determines whether the WLAN link is abnormal according to the measurement report.

Specifically, the method for determining whether the WLAN link is abnormal according to the measurement report can be referred to the related description in the embodiment shown in FIG. 2, and details are not described herein again.

The method for processing a WLAN link abnormality in the MSA according to the embodiment of the present invention includes: receiving, by the UE, a link abnormality message sent by the base station, where the link abnormality message carries a link abnormality indication, and the UE stops according to the link abnormality indication. The PDU to be transmitted is distributed to the cellular network link and the WLAN link transmission, and the PDU to be transmitted is transmitted to the base station through the cellular network link. With this method, the UE can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication sent by the base station, and send the PDU through the cellular network link to the base station. The PDU to be transmitted is sent to ensure that the PDU to be transmitted can be transmitted normally, thereby preventing the UE from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, and the PDU transmission transmitted to the WLAN link fails to be transmitted.

An embodiment of the present invention provides a method for processing a WLAN link abnormality in an MSA. As shown in FIG. 28, the method may include:

S901: The WT acquires measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link.

In the embodiment of the present invention, the WT obtains the measurement information of the WLAN link in multiple manners. For example, the WT may read the measurement information of the WLAN link from the AP, and the measurement information may include the WLAN link. The backhaul transmits information such as data rate and channel utilization.

The WT can also obtain measurement information by detecting the AP. For example, the WT may detect the number of PDUs that the AP initiates retransmission, or the number of PDUs that the AP still fails to transmit after multiple retransmissions, that is, the measurement information may include the number of retransmitted PDUs or the transmission failure. The number of PDUs. The WT may also determine the rate at which the AP sends data to the UE by detecting the change of the buffer capacity of the AP, that is, the measurement information may further include a rate at which the AP sends data to the UE.

S902. If the measurement information meets the preset abnormality determination condition, the WT generates a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal.

If the measurement information includes information about the backhaul transmission data rate and channel utilization rate read by the WT from the AP, the abnormality determination condition may include a preset threshold value of the backhaul transmission data rate, and the preset channel utilization. The lowest threshold of the rate, etc.

When the WT determines that the acquired backhaul transmission data rate is less than the minimum threshold value of the preset backhaul transmission data rate, and/or the WT determines that the acquired channel utilization is less than the minimum threshold value of the preset channel utilization, the WT It can be determined that the received measurement information satisfies the abnormality determination condition, so that the WT determines that the WLAN link is abnormal, and is no longer suitable for the MSA, and the WT generates a link abnormality indication.

If the measurement information includes the number of PDUs detected by the WT, the number of PDUs that failed to be transmitted, or the rate at which the AP sends data to the UE, the abnormality determination condition may be The maximum number of PDUs allowed to retransmit, the maximum number of PDUs that are allowed to fail to transmit, or the minimum rate at which the AP is allowed to send data to the UE.

When the WT determines that the number of retransmitted PDUs detected by the WT is greater than the maximum number of PDUs that are allowed to be retransmitted, the WT determines that the number of PDUs whose transmission failure is detected is greater than the maximum number of PDUs that are allowed to transmit, Or the WT determines that the rate at which the detected AP sends data to the UE is less than the minimum rate at which the AP is allowed to send data to the UE, the WT may determine that the acquired measurement information satisfies the abnormality determining condition, and the WT determines the WLAN chain. If the path is abnormal, it is no longer suitable for MSA, and the WT generates a link abnormality indication.

S903. The WT sends the link abnormality indication to the base station.

The specific manner of the WT sending the link abnormality indication to the base station may be that the WT sends a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.

It should be noted that, in the embodiment of the present invention, after the WT generates a link abnormality indication, the WT sends the link abnormality indication to the base station to indicate to the base station that the WLAN link is abnormal, so that the base station determines the WLAN. After the link is abnormal, perform the corresponding operation.

For example, the base station can stop the MSA according to the link abnormality indication sent by the WT, and send the PDU to be transmitted to the UE through the cellular network link, so as to ensure that the base station can successfully send the PDU to be transmitted to the UE, thereby avoiding the base station continuing. The PDU to be transmitted is distributed to the WLAN link transmission where the abnormality occurs, resulting in the failure of the PDU transmission transmitted to the WLAN link transmission. Specifically, the implementation manner of the eNB transmitting the PDU to be transmitted to the UE through the cellular network link, and the related description in the embodiment shown in FIG. 2 is not described herein.

For another example, after acquiring the link abnormality indication, the base station may further control the UE to reestablish the WLAN link, so after the UE completes the process of reestablishing the WLAN link, the base station continues to distribute the PDU to be transmitted to the cellular network link and the reconstructed The WLAN link transmits, thereby ensuring the normal transmission of the PDUs that are distributed to the reconstructed WLAN link. Specifically, the base station controls the UE to re-establish the WLAN link. For details, refer to the related description in the embodiment shown in Figure 2, and details are not described herein.

An embodiment of the present invention provides a method for processing an WLAN link abnormality in an MSA, which is specifically The WT obtains the measurement information of the WLAN link. If the measurement information meets the preset abnormality determination condition, the WT generates a link abnormality indication, and sends the link abnormality indication to the base station, where the measurement information is used to determine the WLAN. Whether the link is abnormal. The link abnormality indication is used to indicate that the WLAN link is abnormal. The WT can determine the measurement information of the WLAN link, and generate a link abnormality indication when the measurement information meets the preset abnormality determination condition, and send the link abnormality indication to the base station, so that the base station can The link abnormality indication stops the distribution of the PDU to be transmitted to the WLAN link transmission, and sends the PDU to be transmitted to the UE through the cellular network link, so as to ensure that the PDU to be transmitted can be normally transmitted, thereby preventing the base station from continuing to wait. The transmitted PDU is distributed to the WLAN link transmission where the abnormality occurs, causing the PDU transmission transmitted to the WLAN link transmission to fail.

An embodiment of the present invention provides a method for processing a WLAN link abnormality in an MSA. As shown in FIG. 4, the method may include:

S301: The AP monitors a packet loss rate, where the packet loss rate is used to indicate a rate at which the AP fails to forward the PDU.

S302. When the packet loss rate is greater than or equal to a preset packet loss rate threshold, the AP generates a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal.

It should be noted that, in the embodiment of the present invention, the monitoring function may be added to the AP, so that the AP can monitor the packet loss rate of the AP, that is, the AP can read the packet loss rate of the AP, and further determine the packet loss. Whether the rate is greater than or equal to the preset packet loss rate threshold. If the AP determines that the packet loss rate is less than the preset packet loss rate threshold, the AP determines that the WLAN link is normal, that is, the WLAN link can transmit the PDU normally; if the AP determines that the packet loss rate is greater than or equal to the preset packet loss. The rate threshold is used by the AP to determine that the WLAN link is abnormal, so that the AP generates a link abnormality indication.

The method for collecting the packet loss rate of the AP can be used in any way.

Optionally, the AP can periodically monitor the packet loss rate of the AP, that is, each time the preset monitoring period ends, the AP reads the packet loss rate of the AP, and determines the packet loss rate and the preset loss. The size of the packet rate threshold.

Exemplarily, the preset packet loss rate threshold is 10%. If the packet loss rate of the AP is 12% after the end of a certain monitoring period, the AP judges that 12% is greater than 10%. Therefore, the AP determines that the WLAN link is abnormal and generates a link abnormality indication.

Further, the duration of the monitoring period can be designed according to the requirements in the actual project. For example, if the AP needs to monitor the packet loss rate in real time, the duration of the monitoring period can be set to be the same as the statistical period of the AP packet loss rate. Therefore, the AP reads the packet loss rate every time the AP loses the packet loss rate, and determines the packet loss rate and the preset packet loss rate threshold.

Further, in the embodiment of the present invention, the cause of the abnormality of the WLAN link may be caused by the UE not transmitting the PDU to the UE when the UE moves to the coverage of the AP. The PDU, therefore, causes an exception to occur on the WLAN link.

S303. The AP sends the link abnormality indication to the base station.

The specific manner of the AP sending the link abnormality indication to the base station may be that the AP sends a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.

It should be noted that, in the embodiment of the present invention, after the AP generates the link abnormality indication, the AP sends the link abnormality indication to the base station, to indicate to the base station that the WLAN link is abnormal, so that the base station determines the WLAN. After the link is abnormal, perform the corresponding operation.

For example, when the base station is able to stop the MSA according to the link abnormality indication sent by the AP, and send the PDU to be transmitted to the UE through the cellular network link, the base station can successfully send the PDU to be transmitted to the UE, thereby avoiding the base station. The PDU to be transmitted is continuously distributed to the WLAN link transmission where the abnormality occurs, resulting in the failure of the PDU transmission transmitted to the WLAN link transmission.

For another example, after acquiring the link abnormality indication, the base station may further control the UE to reestablish the WLAN link, so after the UE completes the process of reestablishing the WLAN link, the base station continues to distribute the PDU to be transmitted to the cellular network link and the reconstructed The WLAN link transmits, thereby ensuring the normal transmission of the PDUs that are distributed to the reconstructed WLAN link. Specifically, base station control For the implementation of the WLAN link re-establishment by the UE, refer to the related description in the embodiment shown in FIG. 2, and details are not described herein again.

An embodiment of the present invention provides a method for processing an abnormality of a WLAN link in an MSA, where the AP detects a packet loss rate. When the packet loss rate is greater than or equal to a preset packet loss rate threshold, the AP generates a link abnormality indication. And sending the link abnormality indication to the base station, where the packet loss rate is used to indicate a ratio of failure of the AP to forward the PDU, where the link abnormality indication is used to indicate that the WLAN link is abnormal. In this method, the AP can monitor the packet loss rate, and generate a link abnormality indication when the packet loss rate is greater than or equal to the preset packet loss rate threshold, and send the link abnormality indication to the base station, so that the base station can according to the chain. The road abnormality indication stops the distribution of the PDU to be transmitted to the WLAN link transmission, and sends the PDU to be transmitted to the UE through the cellular network link, so as to ensure that the PDU to be transmitted can be normally transmitted, thereby avoiding that the base station continues to transmit. The PDU is distributed to the WLAN link transmission where the abnormality occurs, causing the PDU transmission transmitted to the WLAN link transmission to fail.

An embodiment of the present invention provides a method for processing a WLAN link abnormality in an MSA. As shown in FIG. 5, the method may include:

S401. The AP determines a sequence number (sequence number, abbreviation: SN) of the data packet that is transmitted to the WLAN link, and the data packet includes at least one PDU, where the SN of the data packet is used to determine whether the WLAN link occurs. abnormal.

It should be noted that, in the embodiment of the present invention, the AP can receive the data packet sent by the base station, and in the process of receiving the data packet sent by the base station, the AP can determine the data packet that fails to be transmitted, and the data packet that fails to be transmitted. The SN is sent to the base station in the status report to request the base station to retransmit the data packet whose transmission failed, and causes the base station to determine whether the WLAN link is abnormal according to the status report sent by the AP.

Specifically, in the embodiment of the present invention, in order to enable the base station to determine that the PDU is successfully sent to the AP, when the base station sends the PDU to the AP, the base station may package the PDUs transmitted to the WLAN link into multiple data packets, and Each of the plurality of data packets is assigned a contiguous and unique SN, and a header is added for each data packet for setting the SN of the data packet. Wherein each data packet includes at least one PDU. When the AP receives each data packet sent by the base station, the AP can parse the data. Packet, and according to the packet header of the packet, the SN of the packet is known. If the AP determines that the SN of the data packet received by the AP is not consecutive with the SN of the last received data packet, the AP determines that the data packet sent by the base station is lost, that is, the AP determines that the data packet transmission sent by the base station fails, and the AP can It is determined which specific packet transmissions have failed, so that the AP can determine the SN of the data packet that is transmitted to the WLAN link transmission failure.

Exemplarily, it is assumed that the base station sends three data packets to the AP, and the three consecutive SNs allocated by the base station for the three data packets are 50, 51, and 52, respectively, and the three SNs are respectively set in the three. In the header of the packet. After the AP receives the data packet 50, if the data packet received by the AP is the data packet 52, the AP determines that the SN of the data packet 50 is not continuous with the SN of the data packet 52. At this time, the AP can determine the data packet with the SN of 51. The transmission fails so that the AP determines that the SN of the packet that failed to be transmitted to the WLAN link transmission is 51.

S402. The AP sends a status report to the base station, where the status report includes the SN of the data packet.

In the embodiment of the present invention, if the AP determines that the data packet transmitted to the WLAN link transmission fails, and determines the SN of the data packet, the AP sends a status report to the base station, where the status report includes the SN of the data packet. Requiring the base station to retransmit the data packet, so that the base station can determine that the WLAN link occurs according to the number of retransmissions of the data packet, or the ratio of the number of data packets to the total number of data packets transmitted to the WLAN link. Abnormal, and then perform the corresponding operation.

For example, the base station can generate a link abnormality indication after determining that the WLAN link is abnormal according to the status report sent by the AP, and stop distributing the PDU to be transmitted to the cellular network link and the WLAN link according to the link abnormality indication. Transmitting, and transmitting the PDU to be transmitted to the UE through the cellular network link, to ensure that the base station can normally send the PDU to be transmitted to the UE, thereby preventing the base station from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission. The PDU transmission that caused the transmission to the WLAN link transmission fails. And the base station is further configured to further control the UE to re-establish the WLAN link according to the link abnormality indication after the link abnormality indication is generated, so that after the UE completes the process of reestablishing the WLAN link, the base station continues to distribute the PDU to be transmitted to the cellular network chain. The road and the reconstructed WLAN link are transmitted to ensure normal transmission of the PDUs that are distributed to the reconstructed WLAN link.

Specifically, the base station determines, according to the status report sent by the AP, the implementation manner of the abnormality of the WLAN link, which will be described in detail in the following embodiments, and details are not described herein again.

Further, in conjunction with FIG. 5, as shown in FIG. 6, before the foregoing S401, the method may further include:

S400: The AP receives a data packet sent by the base station, and the packet header of the data packet includes an SN of the data packet.

The packet header of the data packet may be an Internet Protocol (English: Internet Protocol) header of the data packet, or may be a general packet radio service tunnel protocol user of the data packet (English: general packet radio service tunnel protocol user, abbreviation) The :GTP-U) extension header can also be used for the control of the data access control and the configuration protocol (English: control and provisioning of wireless access points protocol specification, abbreviation: CAPWAP). Specifically, the number bit can be added to the header of the data packet to set the SN of the data packet.

Exemplarily, as shown in FIG. 7, is a schematic structural diagram of a data packet, in which the SN of the data packet is set to 100, and the data part of the data packet includes three The PDUs are PDU1, PDU2, and PDU3.

In the embodiment of the present invention, since the SN of the data packet is set in the packet header of the data packet, the AP can learn the SN of the data packet from the packet header of the data packet by parsing the data packet.

An embodiment of the present invention provides a method for processing a WLAN link abnormality in an MSA, which specifically includes: determining, by the AP, an SN of a data packet that is transmitted to a WLAN link, and transmitting a status report to the base station, where the data packet includes at least one PDU, where The SN of the data packet is used to determine whether an abnormality has occurred in the WLAN link, and the status report includes the SN of the data packet. By the method, the AP can send a status report to the base station, so that the base station determines that the WLAN link is abnormal according to the status report, and generates a link abnormality indication, so that the base station can stop the to-be-transmitted according to the link abnormality indication. The PDU is distributed to the WLAN link transmission, and the PDU to be transmitted is sent to the UE through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted, thereby preventing the base station from continuously distributing the PDU to be transmitted to the abnormal WLAN chain. Path transmission, resulting in PDUs being transmitted to the WLAN link transmission The transfer failed.

Embodiment 2

The embodiment of the invention provides a method for processing a WLAN link abnormality in an MSA, which can be applied to the DL and can also be used in the UL. Among them, there are two possible implementations in the DL.

Specifically, when the processing method of the WLAN link abnormality in the MSA provided in the embodiment of the present invention is applied to the DL, as shown in FIG. 8, in the first possible implementation manner, the method may include:

S501. The base station distributes the PDU to be transmitted to the cellular network link and the WLAN link transmission.

In the embodiment of the present invention, the base station may send the PDUs transmitted to the WLAN link to the AP, and the AP forwards the PDUs to the UE; the base station may also package the PDUs transmitted to the WLAN link for transmission into multiple data packets. To the AP transmission, the AP parses at least one PDU in the data packet from each data packet, and sequentially transmits the at least one PDU to the UE.

S502. The base station records an identifier of a PDU transmitted to the WLAN link for transmission.

Specifically, when the base station sends the PDUs transmitted to the WLAN link transmission to the AP, and the AP forwards the PDUs to the UE, the identifier of the PDU is the SN allocated to each PDU.

The SN of the PDU may be an identifier that can uniquely represent the PDU, and both the base station and the UE can identify the PDU according to the SN of the PDU. For example, as shown in FIG. 9 , it is a schematic diagram of a PDU. A PDU includes two parts, and a part is a header of the PDU. The SN of the PDU is set in the header of the PDU, that is, 1. The other part is the data part of the PDU, containing the data of the PDU.

Further, while the base station distributes the PDU to be transmitted to the cellular network link and the WLAN link transmission, the base station can record the SN of the PDU transmitted to the WLAN link.

Specifically, if the base station needs to send a data stream to the UE, where the data stream includes multiple PDUs, when the base station sends the first PDU of the data stream to the UE, the base station can simultaneously generate a record for the base station to distribute to the WLAN. In the list of SNs of the PDUs transmitted by the link, the list may be represented as WlanPduSnList, ie, a WLAN data unit. A list of serial numbers. And after the base station subsequently distributes the PDU to be transmitted in the data stream to the cellular network link and the WLAN link transmission, the base station may record the SN of the PDU transmitted to the WLAN link in the WlanPduSnList.

Exemplarily, assume that the base station needs to send PDUs with

SNs

1, 2, 3, 4, and 5 to the UE. The PDUs with

SNs

1, 2, 3, 4, and 5, respectively, may be represented as PDU1, PDU2, PDU3, PDU4, and PDU5, respectively. While the base station distributes PDU1, PDU2, and PDU3 to the WLAN link transmission, and distributes PDU4 and PDU5 to the cellular network link transmission, the base station records the SN of PDU1, the SN of PDU2, and the SN of PDU3 in WlanPduSnList. As shown in Table 1, SN1, SN2, and SN3 are recorded in the WlanPduSnList, indicating that the base station distributes PDU1, PDU2, and PDU3 to the WLAN link transmission.

Table 1

WlanPduSnList(PDU的SN)WlanPduSnList (SN of the PDU)
WlanPduSnList(PDU的SN)WlanPduSnList (SN of the PDU)	11
22	11
22	33
……......	33

Specifically, when the base station packs the PDUs distributed to the WLAN link transmission into a plurality of data packets and transmits them to the AP transmission, the AP parses at least one PDU in the data packet from each data packet, and the at least one PDU is When transmitting to the UE in sequence, the identifier of the PDU is the SN allocated by the base station for each data packet.

The SN of each data packet has the same meaning as the SN of the data packet described in the embodiment shown in FIG. 5 . For details, refer to the related description in the embodiment shown in FIG. 5 , and details are not described herein again.

Further, while the base station distributes the PDU to be transmitted to the cellular network link and the WLAN link transmission, the base station records the SN of the data packet transmitted to the WLAN link transmission.

Specifically, if the base station needs to send a data stream to the UE, where the data stream includes multiple PDUs, when the base station sends the first PDU of the data stream to the UE, the base station can simultaneously generate one for recording and distributing to the WLAN chain. List of SNs of data packets transmitted by the road, The list can be represented as WlanDataPacketSnList, which is a list of wireless local area network packet serial numbers. And while the base station subsequently distributes the PDU to be transmitted in the data stream to the cellular network link and the WLAN link transmission, the base station may record the SN of the data packet transmitted to the WLAN link for transmission in the list.

Exemplarily, assume that the base station needs to send PDU1, PDU2, PDU3, PDU4, and PDU5 to the UE. And the base station packs PDU1 and PDU2 into one data packet, and allocates SN of 100 for the data packet, the data packet can be represented as data packet 100; and the base station packs the PDU3 into a data packet and allocates the data packet. The SN is 101, and the data packet can be represented as a data packet 101. While the base station is distributing the data packet 100 and the data packet 101 to the WLAN link transmission, and distributing the PDU 4 and the PDU 5 to the cellular network link transmission, the base station records the SN 100 and the SN 101 in the Wlan Data Packet SnList. As shown in Table 2, the SN100 and SN101 are recorded in the WlanDataPacketSnList, indicating that the base station distributes the data packet 100 and the data packet 101 to the WLAN link transmission.

Table 2

WlanDataPacketSnList(数据包的SN)WlanDataPacketSnList (SN of the packet)
	100100
101101	100100
101101	……......

S503. The base station acquires an identifier of at least one retransmission PDU.

S504. The base station determines, in the at least one retransmission PDU, a retransmission PDU that is distributed to the WLAN link transmission.

The specific manner in which the base station determines the retransmission PDUs that are transmitted to the WLAN link in the at least one retransmission PDU may be transmitted by the base station according to the identifier of the at least one retransmission PDU and the information recorded by the base station to the WLAN link. The identity of the PDU to determine the retransmission PDUs that are transmitted to the WLAN link transmission.

Specifically, if the eNB sends the PDUs that are transmitted to the WLAN link to the AP and the PDUs are forwarded to the UE by the AP, the eNB can obtain the SN of the at least one retransmitted PDU by receiving the first status report sent by the UE. The retransmission PDU refers to a PDU that fails to be transmitted and needs to be retransmitted.

Further, in the embodiment of the present invention, in the process of distributing the PDU to be transmitted to the cellular network link and the WLAN link to the UE, some PDUs may fail to transmit, so that the UE cannot receive the transmission failure. PDU. If the UE determines that at least one PDU is not received after the eNB distributes the PDU to be transmitted to the cellular network link and the WLAN link to the UE, that is, the UE determines that at least one PDU transmission fails, when the UE sends the eNB to the base station, When the first status is reported, the UE includes the SN of the at least one PDU in the first status report to request the base station to retransmit the at least one PDU, that is, the SN of the at least one retransmission PDU in the first status report. After receiving the first status report sent by the UE, the base station acquires the SN of the at least one retransmission PDU from the first status report, and initiates retransmission of the at least one retransmission PDU.

For the specific manner in which the UE sends the first status report to the base station, refer to the manner in which the UE sends the status report to the base station in the prior art, and details are not described herein again.

It should be noted that the SN of the at least one retransmission PDU obtained by the base station from the first status report includes an SN that is distributed to the retransmission PDU of the cellular network link transmission, and an SN that is distributed to the retransmission PDU of the WLAN link transmission. .

Exemplarily, assume that the base station transmits PDU1, PDU2, and PDU3 to the WLAN link to the UE, and distributes the PDU4 and PDU5 to the cellular network link to transmit to the UE, if the UE determines that PDU1, PDU2, and PDU5 are not received. If the UE determines that the PDU1, the PDU2, and the PDU5 are unsuccessfully transmitted, the UE sends the SN of the PDU1, the SN of the PDU2, and the SN of the PDU5 in the first status report to the base station when the UE sends the first status report to the base station. To request the base station to retransmit PDU1, PDU2, and PDU5. After receiving the first status report, the base station may acquire SN1, SN2, and SN5 from the first status report, and initiate retransmission for PDU1, PDU2, and PDU5.

The base station may retransmit the at least one retransmission PDU, and the base station retransmits the retransmission PDU that is distributed to the WLAN link and is retransmitted to the UE by using the WLAN link, and the at least one heavy The retransmission PDU that is transmitted to the cellular network link transmission in the PDU is retransmitted to the UE through the cellular network link; the base station may retransmit the at least one retransmission PDU, and the base station may pass the at least one retransmission PDU through the wireless The cellular network link is retransmitted to the UE.

Further, after the base station acquires the SN of the at least one retransmitted PDU, the base station may determine, according to the SN of the at least one retransmitted PDU, and the SN of the PDU transmitted by the base station and transmitted to the WLAN link, to determine the at least one heavy The retransmitted PDUs transmitted to the WLAN link are transmitted in the PDU.

Exemplarily, it is assumed that the SN of the PDU transmitted by the base station and transmitted to the WLAN link is as shown in Table 1, that is, the SNs of the PDUs transmitted by the base station in the WlanPduSnList and distributed to the WLAN link are SN1, SN2 and SN3, respectively. . Then, after the base station obtains SN1, SN2, and SN5 from the received first state report sent by the UE, it determines, by searching in the WlanPduSnList, that SN1 and SN2 are SNs of PDUs transmitted to the WLAN link, and then the base station determines. PDU1 and PDU2 are retransmission PDUs that are transmitted to the WLAN link transmission.

Specifically, if the base station packs the PDUs distributed to the WLAN link transmission into multiple data packets and transmits them to the AP transmission, the AP parses at least one PDU in the data packet from each data packet, and the at least one PDU is The eNB sends the SN to the UDP link transmission failure packet, that is, the base station obtains the SN of the retransmission data packet from the second status report, by receiving the second status report sent by the AP.

Specifically, in the embodiment of the present invention, in a process in which a base station packages a PDU that is transmitted to a WLAN link and transmits the data packet to the AP, some data packets may fail to be transmitted, so that the AP cannot receive the transmission failure. data pack. If the base station packs the PDUs transmitted to the WLAN link into packets and sends them to the AP, the AP determines that one of the data packets is not received, and when the AP sends the second status report to the base station, the AP will SN the data packet. Included in the second status report to request the base station to retransmit the data packet whose transmission failed. The data packet is a data packet that the base station distributes to the WLAN link transmission failure. After receiving the second status report sent by the AP, the base station obtains the SN of the data packet from the second status report, and initiates retransmission of the data packet.

Exemplarily, if the AP determines that the data packet 100 transmitted to the WLAN link transmission fails, when the AP sends the second status report to the base station, the AP includes the SN of the data packet 100 in the second status report and sends the SN to the base station. After receiving the second status report, the base station obtains, from the second status report, a data packet that is distributed to the WLAN link transmission failure. The SN, SN 100, initiates a retransmission of the data packet 100.

Further, after the base station acquires the SN of the data packet, the base station may determine, according to the SN of the data packet, the SN of the data packet transmitted by the base station and transmitted to the WLAN link, to determine that the transmission to the WLAN link fails. data pack.

Exemplarily, it is assumed that the SN of the data packet transmitted by the base station and transmitted to the WLAN link is as shown in Table 2, that is, the SNs of the data packets transmitted by the base station in the table 2 and distributed to the WLAN link are respectively SN100 and SN101. Then, after the base station obtains the SN 100 from the second status report sent by the received AP, by searching in Table 2, it is determined that the SN 100 is the SN of the data packet transmitted to the WLAN link, and then the base station determines that the data packet 100 is A packet that is transmitted to the WLAN link for transmission failure.

S505. If the retransmission PDU transmitted to the WLAN link meets a preset condition, the base station determines that the WLAN link is abnormal.

The retransmission PDU that is transmitted to the WLAN link to meet the preset condition may include: a PDU that is retransmitted to the WLAN link and has a retransmission number greater than or equal to a preset first threshold. Alternatively, the ratio of the number of retransmission PDUs transmitted to the WLAN link transmission to the total number of PDUs transmitted to the WLAN link transmission is greater than or equal to a preset second threshold value.

Specifically, if the base station sends the PDUs transmitted to the WLAN link to the AP, and the AP forwards the PDUs to the UE, when the base station receives the first status report sent by the UE, the base station includes, according to the first status report, At least one SN retransmitting the PDU, retransmitting the at least one retransmitted PDU. If the base station retransmits the retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, and retransmits the retransmission PDU in the at least one retransmission PDU to the cellular network link, The cellular network link retransmits to the UE, and the base station records the number of retransmissions of each retransmitted PDU, and determines that the number of retransmissions in the retransmission PDU transmitted to the WLAN link is greater than or equal to the preset first gate. The PDU of the limit determines that the WLAN link is abnormal.

Exemplarily, taking PDU1 as an example, PDU1 is one of retransmission PDUs transmitted over a WLAN link. After receiving the first status report sent by the UE, the base station retransmits the PDU1 according to the SN1 included in the first status report, and retransmits the number of PDU1 retransmissions. Add 1 and determine whether the number of retransmissions of PDU1 is greater than or equal to the preset first threshold. Among them, the number of retransmissions can be expressed as RETX_COUNT. If the number of retransmissions of the PDU1 is less than the preset first threshold, and the PDU1 is still not successfully transmitted, the base station continues to retransmit the PDU1, and continues to increase the number of retransmissions of the PDU1 by one. Assuming that the preset first threshold is 5, when the base station determines that the number of retransmissions of the PDU1 is 5, the PDU1 is still not successfully transmitted, that is, the base station can still receive the first status report that is sent by the UE and includes the SN1, and the base station determines. The WLAN link is abnormal.

The preset first threshold is the preset maximum number of retransmissions. The base station determines whether the number of retransmissions of the retransmitted PDU is greater than or equal to a preset first threshold. Whether the number of retransmissions of the transmitted PDU reaches the maximum number of retransmissions.

Alternatively, if the base station retransmits the at least one retransmission PDU to the UE through the cellular network link, the base station determines, according to the SN that includes the at least one retransmission PDU in the first status report, the weight of the transmission to the WLAN link transmission. Transmitting the number of PDUs and determining the ratio of the number of retransmission PDUs transmitted to the WLAN link transmission to the total number of PDUs transmitted by the base station to the WLAN link, thereby determining the retransmission transmitted to the WLAN link transmission The ratio of the number of PDUs to the total number of PDUs transmitted by the base station to the WLAN link is greater than or equal to a preset second threshold, and determining that the WLAN link is abnormal.

For example, if the preset second threshold is 10%, the first status report sent by the UE received by the base station includes SN1, SN2, and SN5, and the SNs recorded in the WlanPduSnList saved by the base station are SN1 and SN2, respectively. And SN3, the base station determines that the number of retransmission PDUs transmitted to the WLAN link transmission is two, and the base station determines, according to the SN recorded in the WlanPduSnList, that the total number of PDUs transmitted by the base station to the WLAN link is three. Since the ratio of 2 to 3 is about 66.67%, and 66.67% is greater than 10%, the base station determines that the WLAN link is abnormal.

It should be noted that, in the embodiment of the present invention, the base station may count the number of retransmission PDUs transmitted to the WLAN link and transmitted in the at least one retransmission PDU indicated in the first status report received by the base station in the preset time period. . Further, the base station determines that the ratio of the number of retransmission PDUs transmitted to the WLAN link transmission to the total number of PDUs transmitted by the base station to the WLAN link during the expected time period is greater than or equal to a preset second threshold. A value that determines that the WLAN link is abnormal. The number of the first status reports received by the base station in the preset time period may be one or multiple. When the number of the first status reports received by the base station is multiple during the preset time period, the number of retransmission PDUs allocated by the base station to be transmitted to the WLAN link is the multiple received by the base station within the preset time period. The first status report indicates the sum of the number of retransmission PDUs transmitted to the WLAN link transmission, respectively.

Exemplarily, if the base station receives two first status reports within a preset time period, the first first status report indicates that one retransmission PDU is distributed to the WLAN link transmission, and the second first The status report indicates that there are two retransmission PDUs distributed to the WLAN link transmission, and the base station determines that the number of the at least one retransmission PDU is a sum of 1 and 2, that is, 3. The total number of PDUs transmitted by the base station to the WLAN link during the expected time period is 10, and since the ratio of 3 to 10 is 30% and 30% is greater than 10%, the base station determines that the WLAN link is abnormal.

Specifically, if the base station packs the PDUs distributed to the WLAN link transmission into multiple data packets and transmits them to the AP transmission, the AP parses at least one PDU in the data packet from each data packet, and the at least one PDU is And transmitting to the UE in sequence, after the base station receives the second status report sent by the AP, the base station fails to transmit to the WLAN link according to the SN of the data packet that is distributed to the WLAN link transmission failure included in the second status report. The data packet is retransmitted. If the base station retransmits the WLAN link transmission failure data packet to the AP through the WLAN link, the base station records the number of retransmissions of the data packet that failed to be transmitted, and determines the number of retransmissions of the data packet that failed to be transmitted. The maximum number of retransmissions, that is, the number of retransmissions of the data packet that failed to be transmitted is greater than or equal to a preset first threshold value, thereby determining that the WLAN link is abnormal.

Further, the base station determines that the number of retransmissions of the transmission failure data packet reaches a preset maximum number of retransmissions, determines a method for abnormality of the WLAN link, and determines that the retransmission PDU transmitted by the base station to be transmitted to the WLAN link is A method for determining that the WLAN link is abnormal is similar to the PDU whose number of retransmissions is greater than or equal to the preset first threshold, and is not described here.

Or, after the base station receives the second status report sent by the AP, the base station may further determine Transmitting the number of failed packets and determining the ratio of the number of failed packets to the total number of packets transmitted by the base station to the WLAN link, thereby determining the number of packets that failed to be transmitted to the base station by The ratio of the total number of data packets transmitted by the WLAN link is greater than or equal to a preset second threshold, and determining that the WLAN link is abnormal.

Exemplarily, assuming that the preset second threshold is 10%, when the AP determines that the data packet 100 fails to be transmitted, and the SN of the data packet 100 is included in the second status report and sent to the base station, the base station according to the The SN 100 included in the second status report determines that the data packet 100 transmission failed. The data packet transmitted by the base station to the WLAN link is two, which are the data packet 100 and the data packet 101, respectively. Since the ratio of 1 to 2 is 50% and 50% is greater than 10%, the base station determines that the WLAN link is abnormal.

It should be noted that, in the embodiment of the present invention, the base station may count the number of data packets indicating that the transmission to the WLAN link fails to be transmitted in the second status report received by the base station within the preset time period. And determining, by the base station, the WLAN link by determining that the ratio of the number of failed data packets to the total number of data packets transmitted by the base station to the WLAN link in the preset time period is greater than or equal to a preset second threshold value. An exception occurs. The number of the second status reports received by the base station in the preset time period may be one or multiple. When the number of the second status reports received by the base station is multiple during the preset time period, the number of data packets that are determined by the base station to be transmitted to the WLAN link fails to be received by the base station in the preset time period. The second status report indicates the sum of the number of packets that are transmitted to the WLAN link transmission failure, respectively.

Exemplarily, if the base station receives two second status reports within a preset time period, the first second status report indicates that one packet is transmitted to the WLAN link for transmission failure, and the second second The status report indicates that there are 2 data packets that are transmitted to the WLAN link transmission failure, and the base station determines that the number of data packets that have failed to be transmitted to the WLAN link transmission is a sum of 1 and 2, that is, 3. The total number of data packets transmitted by the base station to the WLAN link in the preset time period is 6, and since the ratio of 3 to 6 is 50%, and 50% is greater than 10%, the base station determines that the WLAN link is abnormal.

S506. The base station generates a link abnormality indication.

S507. The base station stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the PDU to be transmitted to the UE by using the cellular network link.

In the embodiment of the present invention, after the base station determines that the WLAN link is abnormal and generates the link abnormality indication, the base station stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication. And transmitting the PDU to be transmitted to the UE through the cellular network link, so as to ensure that the base station can successfully send the PDU to be transmitted to the UE, thereby preventing the base station from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, resulting in The WLAN link transmission PDU transmission that was distributed to the abnormality failed.

Further, after the base station stops the MSA according to the link abnormality indication, the base station can further control the UE to reestablish the WLAN link. If the UE completes the process of reestablishing the WLAN link under the control of the base station, the base station continues to distribute the PDU to be transmitted to the cellular network link and the reconstructed WLAN link transmission, so that the transmission is distributed to the reconstructed WLAN link. The PDU can be transmitted normally.

If the UE fails to reestablish the WLAN link under the control of the base station, the base station continues to send the PDU to be transmitted to the UE through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted.

For a specific process of the base station controlling the UE to re-establish the WLAN link and restarting the MSA, refer to the related description in the embodiment shown in FIG. 2, and details are not described herein again.

When the processing method of the WLAN link abnormality in the MSA provided in the embodiment of the present invention is applied to the DL, as shown in FIG. 10, in the second possible implementation manner, the method may include:

S601. The base station distributes the PDU to be transmitted to the cellular network link and the WLAN link transmission.

In the embodiment of the present invention, the base station sends the PDUs transmitted to the WLAN link transmission to the AP, and the AP forwards the PDUs to the UE.

S602. The base station receives a link abnormality message sent by the AP, where the link abnormality message carries a link abnormality indication, where the link abnormality message is used to indicate that the WLAN link is sent abnormally.

The link abnormality indication carried in the link abnormality message is generated by the AP after detecting the packet loss rate and determining that the WLAN link is abnormal.

Further, the specific process of the AP to detect the abnormality of the WLAN link and the abnormality of the generated link is detected by the AP. For details, refer to the related description in the embodiment shown in FIG. 4, and details are not described herein again.

S603. The base station stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the PDU to be transmitted to the UE by using the cellular network link.

In the embodiment of the present invention, after the base station determines that the WLAN link is abnormal according to the link abnormality indication carried in the link abnormality message sent by the AP, the base station stops distributing the PDU to be transmitted to the cellular network according to the link abnormality indication. The link and the WLAN link are transmitted, and the PDU to be transmitted is sent to the UE through the cellular network link to ensure that the eNB can successfully send the PDU to be transmitted to the UE, thereby preventing the base station from continuously distributing the PDU to be transmitted to occur. Abnormal WLAN link transmissions result in PDU transmission failures that are distributed to WLAN link transmissions that have anomalies.

Further, after the base station stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, the base station can further control the UE to reconstruct the WLAN link according to the link abnormality indication. If the UE completes the process of reestablishing the WLAN link under the control of the base station, the base station continues to distribute the PDU to be transmitted to the cellular network link and the reconstructed WLAN link transmission, thereby being distributed to the reconstructed WLAN link. The transmitted PDU can be transmitted normally.

If the UE fails to reestablish the WLAN link under the control of the base station, the eNB continues to send the PDU to be transmitted to the UE through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted.

When the processing method of the WLAN link abnormality in the MSA provided in the embodiment of the present invention is applied to the UL, as shown in FIG. 11, the method may include:

S701. The UE distributes the PDU to be transmitted to the cellular network link and the WLAN link transmission.

S702. The UE records an SN that is distributed to a PDU transmitted by the WLAN link.

The SN of the PDU has the same meaning as the SN of the PDU in the embodiment shown in FIG. 6 , except that the SN of the PDU is allocated by the UE in the embodiment of the present invention, as shown in FIG. 6 . The SN of the PDU in the embodiment is allocated by the base station.

Further, while the UE distributes the PDU to be transmitted to the cellular network link and the WLAN link transmission, the UE may record the SN of the PDU transmitted to the WLAN link transmission.

Specifically, if the UE needs to transmit a data stream to the base station, where the data stream includes multiple PDUs, when the UE sends the first PDU in the data stream to the base station, the UE may simultaneously generate one for recording the UE to a list of SNs of PDUs transmitted over the WLAN link, The list can be represented as WlanPduSnList. And after the UE subsequently distributes the PDU to be transmitted in the data stream to the cellular network link and the WLAN link transmission, the UE may record the SN of the PDU transmitted to the WLAN link in the WlanPduSnList.

Exemplarily, it is assumed that the UE needs to transmit PDU6, PDU7, PDU8, PDU9, and PDU10 to the base station. While the UE distributes the PDU 6, PDU 7, and PDU 8 to the WLAN link transmission, and distributes the PDU 9 and the PDU 10 to the cellular network link transmission, the base station records the SN of the PDU 6, the SN of the PDU 7, and the SN of the PDU 8 in the WlanPduSnList. As shown in Table 3, SN6, SN7, and SN8 are recorded in the WlanPduSnList, indicating that the base station distributes PDU6, PDU7, and PDU8 to the WLAN link transmission.

table 3

WlanPduSnList(PDU的SN)WlanPduSnList (SN of the PDU)
WlanPduSnList(PDU的SN)WlanPduSnList (SN of the PDU)	66
77	66
77	88
……......	88

S703. The UE acquires at least one SN of the retransmitted PDU.

Specifically, the UE may obtain the SN of the at least one retransmitted PDU by receiving the third status report sent by the base station.

Further, in the embodiment of the present invention, in the process of distributing the PDU to be transmitted to the cellular network link and the WLAN link to the base station, some PDUs may fail to be transmitted, so that the base station cannot receive the transmission failure. PDU. If the base station determines that at least one PDU is not received after the UE transmits the PDU to be transmitted to the cellular network link and the WLAN link to the base station, that is, the base station determines that at least one PDU transmission fails, when the base station sends the UE to the UE, During the third status report, the base station includes the SN of the at least one PDU in the third status report to request the UE to retransmit the at least one PDU, that is, the SN that includes at least one retransmission PDU in the third status report. After receiving the third status report sent by the base station, the UE acquires at least one SN of the retransmitted PDU from the third status report, and initiates retransmission of the at least one retransmission PDU.

The specific manner in which the base station sends the third status report to the UE can be found in the prior art. The manner in which the intra-base station sends a status report to the UE is not described here.

It should be noted that the SN of the at least one retransmission PDU acquired by the UE from the third status report includes an SN that the UE distributes to the retransmission PDU transmitted by the cellular network link, and a retransmission PDU that is distributed to the WLAN link transmission. SN.

Exemplarily, suppose the UE transmits PDU6, PDU7 and PDU8 to the WLAN link to the base station, and distributes the PDU9 and PDU10 to the cellular network link to transmit to the base station, if the base station determines that PDU6, PDU7, and PDU10 are not received. If the base station determines that the PDU6, the PDU7, and the PDU10 fail to transmit, when the base station sends the third status report to the UE, the base station sends the SN of the PDU6, the SN of the PDU7, and the SN of the PDU10 in the third status report, and sends the message to the UE. To request the UE to retransmit PDU6, PDU7, and PDU10. After receiving the third status report, the UE may acquire SN6, SN7, and SN10 from the third status report, and initiate retransmission to PDU6, PDU7, and PDU10.

The retransmission of the at least one retransmission PDU by the UE may be that the UE retransmits the retransmission PDU that is distributed to the WLAN link and is retransmitted to the base station by the WLAN link, and the at least one heavy The retransmission PDU that is transmitted to the cellular network link transmission in the PDU is retransmitted to the base station through the cellular network link; the UE may retransmit the at least one retransmission PDU, and the UE may pass the at least one retransmission PDU through the wireless The cellular network link is retransmitted to the base station.

S704. The UE determines, in the at least one retransmission PDU, a retransmission PDU that is distributed to the WLAN link transmission.

Specifically, the UE determines, according to the SN of the at least one retransmission PDU and the SN of the PDU transmitted by the UE and transmitted to the WLAN link, the retransmission PDU that is distributed to the WLAN link transmission.

Exemplarily, it is assumed that the SN of the PDU transmitted by the UE to be transmitted to the WLAN link is as shown in Table 3, that is, the SNs of the PDUs transmitted by the UE in Table 3 and distributed to the WLAN link are respectively SN6, SN7 and SN8. Then, after the UE obtains the SN6, the SN7, and the SN10 from the received third state report sent by the base station, by searching in Table 3, it is determined that SN6 and SN7 are SNs of the PDUs transmitted to the WLAN link, and further The base station determines that PDU 6 and PDU 7 are retransmission PDUs that are transmitted to the WLAN link transmission.

S705. If the retransmission PDU transmitted to the WLAN link meets a preset condition, the UE determines that the WLAN link is abnormal.

The retransmitting PDU that is transmitted to the WLAN link meets a preset condition that includes: a PDU that is transmitted to the WLAN link and has a retransmission PDU having a retransmission number greater than or equal to a preset first threshold, or The ratio of the number of retransmission PDUs transmitted to the WLAN link transmission to the total number of PDUs transmitted to the WLAN link transmission is greater than or equal to a preset second threshold.

Specifically, after the UE receives the third status report sent by the base station, the UE retransmits the at least one retransmission PDU according to the SN that includes the at least one retransmission PDU in the third status report. And if the UE retransmits the retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, and retransmits the retransmission PDU in the at least one retransmission PDU to the cellular network link, If the cellular network link is retransmitted to the base station, the UE records the number of retransmissions of each retransmitted PDU, and determines that the number of retransmissions in the retransmission PDU transmitted to the WLAN link is greater than or equal to a preset first threshold. The value of the PDU determines that the WLAN link is abnormal.

Exemplarily, taking PDU6 as an example, PDU6 is one of the retransmission PDUs transmitted to the WLAN link transmission. After receiving the third status report sent by the base station, the UE retransmits the PDU 6 according to the SN6 included in the third status report, and adds 1 to the number of retransmissions of the PDU6, and determines whether the number of retransmissions of the PDU 6 is greater than or Equal to the preset first threshold. If the number of retransmissions of the PDU 6 is less than the preset first threshold, and the PDU 6 is still not successfully transmitted, the UE continues to retransmit the PDU 6 and continues to increment the number of retransmissions of the PDU 6 by one. Assuming that the preset first threshold is 5, when the UE determines that the number of retransmissions of the PDU 6 is 5, the PDU 6 is still not successfully transmitted, that is, the UE can still receive the third status report that is sent by the base station and includes the SN6, and the UE determines. The WLAN link is abnormal.

The preset first threshold is the preset maximum number of retransmissions. The UE determines whether the number of retransmissions of the retransmitted PDU is greater than or equal to a preset first threshold. Whether the number of retransmissions of the transmitted PDU reaches the maximum number of retransmissions.

Or, if the UE retransmits the at least one retransmission PDU to the base station through the wireless cellular network link, the UE includes at least one retransmission PDU according to the third status report. SN, determining the number of retransmission PDUs transmitted to the WLAN link transmission, and determining the number of retransmission PDUs that are distributed to the WLAN link transmission and the total number of PDUs transmitted by the UE to the WLAN link transmission Ratio, thereby determining the WLAN chain by determining that the ratio of the number of retransmission PDUs transmitted to the WLAN link transmission to the total number of PDUs transmitted by the UE to the WLAN link is greater than or equal to a preset second threshold value An abnormality occurred in the road.

For example, if the preset second threshold is 20%, the third status report sent by the base station that is received by the UE includes SN6, SN7, and SN10, and the SNs recorded in the WlanPduSnList saved by the UE are SN6 and SN7, respectively. And SN8, the UE determines that the number of retransmission PDUs transmitted to the WLAN link transmission is 2, and the UE determines, according to the SN recorded in the WlanPduSnList, that the total number of PDUs transmitted by the UE to the WLAN link is 3. Since the ratio of 2 to 3 is about 66.67%, and 66.67% is greater than 20%, the UE determines that the WLAN link is abnormal.

It should be noted that, in the embodiment of the present invention, the UE may count the number of retransmission PDUs transmitted to the WLAN link and transmitted in the at least one retransmission PDU indicated in the third status report received by the UE in the preset time period. . And determining, by the UE, the WLAN link by determining that the ratio of the number of retransmission PDUs transmitted to the WLAN link transmission to the total number of PDUs transmitted by the UE to the WLAN link is greater than or equal to a preset second threshold value. An exception occurs. The number of the third status reports received by the UE in the preset time period may be one or multiple. When the number of the third status reports received by the UE is multiple during the preset time period, the number of retransmission PDUs allocated by the UE to the WLAN link transmission is multiple received by the UE within the preset time period. The third status report indicates the sum of the number of retransmission PDUs transmitted to the WLAN link transmission, respectively.

Exemplarily, if the UE receives three third status reports in a preset time period, the first third status report indicates that one retransmission PDU is distributed to the WLAN link transmission, and the second third The status report indicates that there are 2 retransmission PDUs distributed to the WLAN link transmission, and the third third status report indicates that there is one retransmission PDU distributed to the WLAN link transmission, and the UE determines to distribute to the WLAN link. The number of transmitted retransmission PDUs is the sum of 1, 2, and 1, which is 4. The total number of PDUs transmitted by the UE to the WLAN link is 10, Since the ratio of 4 to 10 is 40% and 40% is greater than 20%, the UE determines that the WLAN link is abnormal.

S706. The UE generates a link abnormality indication.

S707. The UE stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the PDU to be transmitted to the base station through the cellular network link.

S708. The UE sends a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.

It should be noted that the execution order of the foregoing S707 and S708 is not limited in the embodiment of the present invention. S707 may be performed first, then S708 may be performed, S708 may be performed first, S707 may be performed, and S707 and S708 may be simultaneously executed.

In the embodiment of the present invention, after the UE determines that the WLAN link is abnormal and generates a link abnormality indication, the UE stops distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication. And transmitting the PDU to be transmitted to the base station through the cellular network link to ensure that the UE can successfully send the PDU to be transmitted to the base station, thereby preventing the UE from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, resulting in being Distribution to the WLAN link transmission PDU transmission where the exception occurred failed.

Optionally, in the embodiment of the present invention, after the link abnormality indication is generated, if the UE sends the link abnormality indication to the base station, the UE may receive the stop indication of the base station, and then the UE stops according to the stop indication. The PDU to be transmitted is distributed to the cellular network link and the WLAN link transmission, and the PDU to be transmitted is transmitted to the base station through the cellular network link.

It should be noted that, in the embodiment of the present invention, after the UE sends the generated link abnormality indication in the link abnormality message to the base station, the base station can determine that the WLAN link is abnormal according to the link abnormality indication, thereby Perform the appropriate action. For example, after the base station determines that the WLAN link is abnormal according to the link abnormality indication sent by the UE, the base station can control the UE to reestablish the WLAN link according to the link abnormality indication.

Specifically, the base station controls the UE to re-establish the WLAN link according to the link abnormality indication. For details, refer to the related description in the embodiment shown in FIG. 2, and details are not described herein again.

Further, if the UE completes the process of reestablishing the WLAN link under the control of the base station, Then the UE continues to distribute the PDU to be transmitted to the cellular network link and the reconstructed WLAN link transmission re-, so that the PDUs transmitted to the reconstructed WLAN link can be transmitted normally. If the UE fails to reestablish the WLAN link under the control of the base station, the UE continues to send the PDU to be transmitted to the base station through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted.

Embodiment 3

As shown in FIG. 12, an embodiment of the present invention provides a base station, where the base station specifically includes:

The obtaining unit 10 is configured to obtain a link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link.

The transmitting unit 11 is configured to stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication acquired by the acquiring unit 10, and transmit the PDU through the cellular network link The UE sends the PDU to be transmitted.

Optionally, the acquiring unit 10 is specifically configured to generate the link abnormality indication when it is determined that the WLAN link is abnormal.

Optionally, the acquiring unit 10 is specifically configured to determine, in the at least one retransmission PDU, a retransmission PDU that is distributed to the WLAN link transmission, if the retransmission PDU that is transmitted to the WLAN link transmission meets a pre- If conditions are met, it is determined that the WLAN link is abnormal.

The retransmitted PDU distributed to the WLAN link transmission meets a preset condition. include:

Optionally, the transmitting unit 11 is further configured to: before the obtaining unit 10 determines that the retransmission PDU of the WLAN link transmission is distributed in the at least one retransmission PDU, distribute the PDU to be transmitted to the The cellular network link and the WLAN link transmission.

Further, in conjunction with FIG. 12, as shown in FIG. 13, the base station further includes a recording unit 12, and the recording unit 12 is configured to record an identifier of the PDU transmitted by the transmission unit 11 to the WLAN link.

The obtaining unit 10 is further configured to acquire an identifier of the at least one retransmission PDU.

The obtaining unit 10 is configured to determine, according to the identifier of the at least one retransmission PDU and the identifier of the PDU that is transmitted to the WLAN link and recorded by the recording unit 12, to determine the distribution to the WLAN. Retransmission PDU for link transmission.

Optionally, the identifier of the at least one retransmission PDU acquired by the acquiring unit 10 is a sequence number SN of the at least one retransmission PDU.

The acquiring unit 10 is configured to receive a first status report sent by the UE, and obtain an SN of the at least one retransmitted PDU from the first status report, where the first status report includes the At least one SN that retransmits the PDU.

Optionally, the identifier of the at least one retransmission PDU acquired by the acquiring unit 10 is an SN that is distributed to a data packet in which the WLAN link transmission fails, and the data packet includes the at least one retransmission PDU.

The acquiring unit 10 is specifically configured to receive a second status report sent by the access point AP, and obtain an SN of the data packet from the second status report, where the second status report includes the data packet SN.

Optionally, the acquiring unit 10 is configured to receive a measurement report, where the measurement report includes measurement information of the WLAN link, and if the measurement information meets a preset abnormality determination condition, determine the WLAN chain. An abnormality occurred in the road.

Optionally, the acquiring unit 10 is specifically configured to send a link abnormality message sent by the WT, where the link abnormality message carries the link abnormality indication.

Optionally, the acquiring unit 10 is configured to receive a link abnormality message sent by the UE, where the link abnormality message carries the link abnormality indication.

Optionally, the acquiring unit 10 is configured to receive a link abnormality message sent by the AP, where the link abnormality message carries the link abnormality indication.

Optionally, the PDU to be transmitted includes a PDU that has not been transmitted to the UE in a PDU that has been distributed to the cellular network link and the WLAN link.

The transmitting unit 11 is specifically configured to send a status report request to the UE, and receive a feedback status report sent by the UE, and send, according to the feedback status report, to the UE by using the cellular network link. Denoting a PDU that is not transmitted to the UE, the status report request is used to request the UE to feed back the PDU that is not transmitted to the UE, and the feedback status report is used to indicate that the UE is not transmitted to the UE. PDU.

Optionally, the base station further includes a control unit 13 . Illustratively, with reference to FIG. 13 , as shown in FIG. 14 , the control unit 13 is configured to use the link abnormality indication acquired by the acquiring unit 10, Controlling the UE to reestablish a WLAN link.

An embodiment of the present invention provides a base station, where the base station can obtain a link abnormality indication, and according to the link abnormality indication, stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission, and through the cellular network chain. The road sends a PDU to be transmitted to the UE, and the link abnormality indication is used to indicate that the WLAN link is abnormal. The base station provided by the embodiment of the present invention can obtain the link abnormality indication, and determine that the WLAN link is abnormal according to the link abnormality indication, so that the base station can stop distributing the PDU to be transmitted to the WLAN according to the link abnormality indication. The link transmits and transmits the PDU to be transmitted to the UE through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted, thereby preventing the base station from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, resulting in being The PDU transmission to the WLAN link transmission failed.

As shown in FIG. 15, an embodiment of the present invention provides a UE, including:

The generating unit 20 is configured to: when the determining unit 21 determines that an abnormality occurs in the WLAN link, generate a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link occurs abnormal.

The transmitting unit 22 is configured to stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication generated by the generating unit 20, and transmit the PDU through the cellular network link The base station sends the PDU to be transmitted.

Optionally, the UE further includes a sending unit 23, where the sending unit 23 is configured to send the link abnormality indication generated by the generating unit 20 to the base station, as shown in FIG. The link abnormality indication is used by the base station to determine that an abnormality occurs in the WLAN link.

Optionally, the determining unit 21 is configured to determine, in the at least one retransmission PDU, the retransmission PDU that is distributed to the WLAN link transmission, if the retransmission PDU that is transmitted to the WLAN link transmission meets a preset Condition, it is determined that the WLAN link is abnormal.

Optionally, the transmitting unit 22 is further configured to: before the determining unit 21 determines that the retransmission PDU of the WLAN link transmission is distributed in the at least one retransmission PDU, distribute the PDU to be transmitted to the Said cellular network link and said WLAN link transmission;

Further, as shown in FIG. 15 or FIG. 16, the UE further includes a recording unit 24 and an obtaining unit 25. Illustratively, in conjunction with FIG. 15, as shown in FIG. 17, the recording sheet 24 is used to record the The transmission unit 22 distributes the sequence number SN of the PDU transmitted by the WLAN link.

The acquiring unit 25 is configured to acquire an SN of the at least one retransmission PDU.

The determining unit 21 is specifically configured to determine, according to the SN of the at least one retransmission PDU of the acquiring unit 25 and the SN of the PDU that is transmitted to the WLAN link and recorded by the recording unit 24, A retransmission PDU that is distributed to the WLAN link transmission.

Optionally, the determining unit 21 is specifically configured to acquire the measurement of the WLAN link. The quantity information, if the measurement information meets a preset abnormality determination condition, the UE determines that an abnormality occurs in the WLAN link, and the measurement information is used to determine whether an abnormality occurs in the WLAN link.

Optionally, the PDU to be transmitted includes a PDU that has been distributed to the WLAN link and is not transmitted to the base station.

The transmitting unit 22 is specifically configured to send a status report request to the base station, and receive a feedback status report sent by the base station, and send, according to the feedback status report, to the base station by using the cellular network link. Deriving a PDU that has been distributed to the WLAN link and not transmitted to the base station, the status report requesting to request the base station to feed back the PDU that has been distributed to the WLAN link and not transmitted to the base station The feedback status report is used to indicate the PDU that has been distributed to the WLAN link and is not transmitted to the base station.

An embodiment of the present invention provides a UE, where the UE is configured to generate a link abnormality indication when determining that the WLAN link is abnormal, and stop distributing the PDU to be transmitted to the cellular network link according to the link abnormality indication. The WLAN link transmits and transmits the PDU to be transmitted to the base station through the cellular network link, and the link abnormality indication is used to indicate that the WLAN link is abnormal. The UE provided by the embodiment of the present invention can determine that the WLAN link is abnormal, and generate a link abnormality indication, so that the UE can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication, and The network link sends the PDU to be transmitted to the base station to ensure that the PDU to be transmitted can be transmitted normally, thereby preventing the UE from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, thereby being distributed to the WLAN link transmission. The PDU transmission failed.

As shown in FIG. 29, an embodiment of the present invention provides a UE, including:

The receiving unit 90 is configured to receive a link abnormality message sent by the base station, where the link abnormality message carries the link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link.

The transmitting unit 91 is configured to stop distributing the protocol data unit PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication received by the receiving unit 90, and pass the cellular network link Sending the PDU to be transmitted to the base station.

Optionally, in conjunction with FIG. 29, as shown in FIG. 30, the UE further includes an obtaining unit 92 and a sending unit 93.

The acquiring unit 92 is configured to acquire measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link, before the receiving unit 90 receives the link abnormality message sent by the base station.

The sending unit 93 is configured to send a measurement report to the base station, where the measurement report includes measurement information of the WLAN link.

Optionally, the PDU to be transmitted includes a PDU that has been distributed to the cellular network link and the PDU transmitted by the WLAN link is not transmitted to the base station.

The transmitting unit 91 is specifically configured to send a status report request to the base station, and receive a feedback status report sent by the base station, and send, according to the feedback status report, to the base station by using the cellular network link. Denoting a PDU that is not transmitted to the base station, the status report request is used to request the eNB to transmit the PDU that is not transmitted to the base station, and the feedback status report is used to indicate the PDU that is not transmitted to the base station .

An embodiment of the present invention provides a UE, where the UE can receive a link abnormality message sent by a base station, where the link abnormality message carries the link abnormality indication, and stops the protocol to be transmitted according to the link abnormality indication. The data unit PDU is distributed to the cellular network link and the WLAN link transmission, and the PDU to be transmitted is sent to the base station through the cellular network link, wherein the link abnormality indication is used to indicate that the WLAN link is abnormal. . The UE provided by the embodiment of the present invention can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication sent by the base station, and send the PDU to be transmitted to the base station through the cellular network link to ensure that the PDU is to be transmitted. The PDU can be transmitted normally, thereby preventing the UE from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, and the PDU transmission transmitted to the WLAN link transmission fails.

As shown in FIG. 31, an embodiment of the present invention provides a WT, including:

The obtaining unit 100 is configured to acquire measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link.

The generating unit 101 is configured to generate a link abnormality indication, where the measurement information acquired by the acquiring unit 100 meets a preset abnormality determining condition, where the link abnormality refers to The indication is used to indicate that an abnormality occurs in the WLAN link.

The sending unit 102 is configured to send the link abnormality indication to the base station.

Optionally, the sending unit 102 is configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.

The embodiment of the present invention provides a WT, which can obtain measurement information of a WLAN link, and if the measurement information meets a preset abnormality determination condition, generate a link abnormality indication, and send the link abnormality indication to the base station, where The measurement information is used to determine whether an abnormality occurs in the WLAN link, and the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link. The WT provided by the embodiment of the present invention can determine the measurement information of the WLAN link, generate a link abnormality indication when the measurement information meets the preset abnormality determination condition, and send the link abnormality indication to the base station. Therefore, the base station can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication, and send the PDU to be transmitted to the UE through the cellular network link, so as to ensure that the PDU to be transmitted can be normally transmitted, thereby avoiding The base station continuously distributes the PDU to be transmitted to the WLAN link transmission where the abnormality occurs, causing the PDU transmission transmitted to the WLAN link transmission to fail.

As shown in FIG. 18, an embodiment of the present invention provides an AP, where the AP may specifically include:

The monitoring unit 30 is configured to monitor a packet loss rate, where the packet loss rate is used to represent a rate at which the AP fails to forward the PDU.

The generating unit 31 is configured to generate a link abnormality indication, where the link abnormality indication is used to indicate the WLAN chain, when the packet loss rate monitored by the monitoring unit 30 is greater than or equal to a preset packet loss rate threshold. An abnormality occurred in the road.

The sending unit 32 is configured to send the link abnormality indication generated by the generating unit 31 to the base station.

Optionally, the sending unit 32 is configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication generated by the generating unit 31.

The AP provided by the embodiment of the present invention can monitor the packet loss rate, and when the packet loss rate is greater than or equal to the preset packet loss rate threshold, generate a link abnormality indication, and send the link abnormality to the base station. The link abnormality indicates that the packet loss rate is used to indicate the rate at which the AP fails to forward the PDU, and the link abnormality indication is used to indicate that the WLAN link is abnormal. The AP provided by the embodiment of the present invention can monitor a packet loss rate, and generate a link abnormality indication when the packet loss rate is greater than or equal to a preset packet loss rate threshold, and send the link abnormality indication to the base station, so that the base station The PDU to be transmitted may be distributed to the WLAN link transmission according to the link abnormality indication, and the PDU to be transmitted is sent to the UE through the cellular network link, so as to ensure that the PDU to be transmitted can be normally transmitted, thereby preventing the base station from continuing. The PDU to be transmitted is distributed to the WLAN link transmission where the abnormality occurs, resulting in the failure of the PDU transmission transmitted to the WLAN link transmission.

As shown in FIG. 19, an embodiment of the present invention provides an AP, where the AP may specifically include:

The determining unit 40 is configured to determine a sequence number SN of the data packet that is transmitted to the WLAN link transmission failure, the data packet includes at least one PDU, and the SN of the data packet is used to determine whether an abnormality occurs in the WLAN link.

The sending unit 41 is configured to send a status report to the base station, where the status report includes the SN of the data packet determined by the determining unit 40.

Optionally, in conjunction with FIG. 19, as shown in FIG. 20, the AP further includes a receiving unit,

The receiving unit 42 is configured to receive, before the determining unit 40 determines that the SN of the data packet that is transmitted to the WLAN link transmission fails, the data packet sent by the base station, where the packet header includes the The SN of the packet.

The determining unit 40 is specifically configured to determine an SN of the data packet according to a packet header of the data packet.

The AP provided by the embodiment of the present invention can determine the SN of the data packet that is transmitted to the WLAN link and fails to transmit, and send a status report to the base station, where the data packet includes at least one PDU, and the SN of the data packet is used to determine the WLAN link. Whether an exception occurs or not, the status report includes the SN of the packet. The AP provided by the embodiment of the present invention can send a status report to the base station, so that the base station determines that the WLAN link is abnormal according to the status report, and generates a link abnormality indication, so that the base station can stop according to the link abnormality indication. Distributing the PDU to be transmitted to the WLAN link transmission and through the cellular network chain The PDU is sent to the UE to ensure that the PDU to be transmitted can be transmitted normally, thereby preventing the eNB from continuously distributing the PDU to be transmitted to the WLAN link transmission with abnormality, resulting in transmission of the PDU transmitted to the WLAN link. failure.

Embodiment 4

As shown in FIG. 21, an embodiment of the present invention provides a base station, where the base station may include: a processor 50, a transceiver 51, a memory 52, and a system bus 53. The processor 50, the transceiver 51, and the memory 52 are connected by the system bus 53 and complete communication with each other.

The processor 50 may be a central processing unit (English: central processing unit, abbreviated as CPU), or an application specific integrated circuit (ASIC), or configured to implement the implementation of the present invention. An example of one or more integrated circuits.

The transceiver 51 may be a module with a transceiver function integrated by a transmitter and a receiver, or a module having an independent transmitter and a separate receiver, and the transceiver 51 is used for the base station and Other devices communicate, for example, the transceiver 51 is in communication with the UE under the control of the processor 50.

The memory 52 may include a volatile memory (English: volatile memory), such as random-access memory (abbreviation: RAM); the memory 52 may also include a non-volatile memory (English: Non-volatilememory), such as read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: Solid-state drive, abbreviated: SSD); the memory 52 may also include a combination of the above types of memory.

When the base station is running, the processor 50, the transceiver 51, and the memory 52 may perform any one of the method processes described in FIG. 1, FIG. 8, FIG. 10, and FIG.

The processor 50 is configured to obtain a link abnormality indication, and stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and by using the cellular network chain Transmitting, to the UE, the PDU to be transmitted, where The link abnormality indication is used to indicate that the WLAN link is abnormal; the memory 52 is configured to store the code of the link abnormality indication, the PDU to be transmitted, and a software program that controls the processor 50 to complete the foregoing process. Thus, the processor 50 completes the above process by executing the software program and calling the code of the link abnormality indication and the PDU to be transmitted.

It should be noted that the processor 50 sends the PDU to be transmitted to the UE by controlling the transceiver 51.

Optionally, the processor 50 is configured to generate the link abnormality indication when it is determined that the WLAN link is abnormal.

Optionally, the processor 50 is specifically configured to determine, in the at least one retransmission PDU, a retransmission PDU that is distributed to the WLAN link transmission, if the retransmission PDU that is distributed to the WLAN link transmission meets a pre- If conditions are met, it is determined that the WLAN link is abnormal.

Optionally, the processor 50 is further configured to distribute the PDU to be transmitted to the cellular network link before determining to retransmit the retransmission PDU of the WLAN link transmission in the at least one retransmission PDU. Transmitting with the WLAN link, and recording an identifier of the PDU transmitted to the WLAN link, and acquiring an identifier of the at least one retransmission PDU, and according to the identifier of the at least one retransmission PDU and the distributing And determining, by the identifier of the PDU transmitted by the WLAN link, the retransmitted PDU that is distributed to the WLAN link transmission.

Optionally, the identifier of the at least one retransmission PDU acquired by the processor 50 is a sequence number SN of the at least one retransmission PDU.

The processor 50 is configured to receive a first status report sent by the UE, and obtain an SN of the at least one retransmission PDU from the first status report, where the first status report includes the At least one SN that retransmits the PDU.

Optionally, the identifier of the at least one retransmission PDU acquired by the processor 50 is an SN that is distributed to a data packet in which the WLAN link transmission fails, and the data packet includes the at least one retransmission PDU.

The processor 50 is configured to receive a second status report sent by the access point AP, and obtain an SN of the data packet from the second status report, where the second status report includes the data packet SN.

Optionally, the processor 50 is configured to receive a measurement report, where the measurement report includes measurement information of the WLAN link, and if the measurement information meets a preset abnormality determination condition, determine the WLAN chain. An abnormality occurred in the road.

Optionally, the processor 50 is configured to receive a link abnormality message sent by the WT, where the link abnormality message carries the link abnormality indication.

Optionally, the processor 50 is configured to receive a link abnormality message sent by the UE, where the link abnormality message carries the link abnormality indication.

Optionally, the processor 50 is configured to receive a link abnormality message sent by the AP, where the link abnormality message carries the link abnormality indication.

The processor 50 is specifically configured to send a status report request to the UE, and receive a feedback status report sent by the UE, and send the location to the UE by using the cellular network link according to the feedback status report. Denoting a PDU that is not transmitted to the UE, the status report request is used to request the UE to feed back the PDU that is not transmitted to the UE, and the feedback status report is used to indicate that the UE is not transmitted to the UE. PDU.

Optionally, the processor 50 is further configured to control, according to the link abnormality indication, the UE to re-establish a WLAN link.

An embodiment of the present invention provides a base station, where the base station can obtain a link abnormality indication, and according to the link abnormality indication, stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission, and through the cellular network chain. The road sends a PDU to be transmitted to the UE, and the link abnormality indication is used to indicate that the WLAN link is abnormal. The base station provided by the embodiment of the present invention can obtain a link abnormality indication, and is determined according to the link abnormality indication. The WLAN link is abnormal, so that the base station can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication, and send the PDU to be transmitted to the UE through the cellular network link to ensure the PDU to be transmitted. The transmission can be performed normally, thereby preventing the base station from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, and the PDU transmission transmitted to the WLAN link transmission fails.

As shown in FIG. 22, an embodiment of the present invention provides a UE, where the UE may include: a processor 60, a memory 61, and a system bus 62. The processor 60 and the memory 61 are connected by the system bus 62 and complete communication with each other.

The processor 60 can be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 61 may include a volatile memory such as a RAM; the memory 61 may also include a non-volatile memory such as a ROM, a flash memory, an HDD or an SSD; the memory 61 may also include a memory of the above kind combination.

When the UE is running, the processor 60 and the memory 61 may perform any one of the method flows described in FIG. 3, FIG. 8, FIG. 10, and FIG.

The processor 60 is configured to generate a link abnormality indication when determining that the WLAN link is abnormal, and stop distributing the PDU to be transmitted to the cellular network link and the WLAN link according to the link abnormality indication. Transmitting, and transmitting, by the cellular network link, the PDU to be transmitted to the base station, where the link abnormality indication is used to indicate that the WLAN link is abnormal; the memory 61 is configured to store the link abnormality An indicated code and the PDU to be transmitted, and a software program that controls the processor 60 to perform the above process, such that the processor 60 executes the software program and invokes the code of the link abnormality indication and the code The PDU to be transmitted completes the above process.

Optionally, in conjunction with FIG. 22, as shown in FIG. 23, the UE further includes a transceiver 63.

The transceiver 63 is configured to send, to the base station, the link abnormality indication generated by the processor 60, where the link abnormality indication is used by the base station to determine that an abnormality occurs in the WLAN link.

It should be noted that the transceiver 63 may be a module with transceiver function integrated by the transmitter and the receiver, or may have a separate transmitter and independent. A module of the receiver, the transceiver 63 is in communication with the base station under the control of the processor 60.

Optionally, the processor 60 is specifically configured to determine, in the at least one retransmission PDU, a retransmission PDU that is distributed to the WLAN link transmission, if the retransmission PDU that is distributed to the WLAN link transmission meets a pre- If conditions are met, it is determined that the WLAN link is abnormal.

Optionally, the processor 60 is further configured to distribute the PDU to be transmitted to the cellular network link before determining that the retransmission PDU of the WLAN link transmission is distributed in the at least one retransmission PDU. And transmitting, by the WLAN link, a sequence number SN of the PDU transmitted by the WLAN link, and acquiring an SN of the at least one retransmitted PDU, and according to the SN of the at least one retransmitted PDU and the distributing And determining, by the SN of the PDU transmitted by the WLAN link, the retransmitted PDU that is distributed to the WLAN link transmission.

Optionally, the processor 60 is configured to acquire measurement information of the WLAN link, and if the measurement information meets a preset abnormality determination condition, the UE determines that the WLAN link is abnormal. The measurement information is used to determine whether an abnormality has occurred in the WLAN link.

The processor 60 is configured to send a status report request to the base station, and receive a feedback status report sent by the base station, and send, according to the feedback status report, to the base station by using the cellular network link. Denoting a PDU that is not transmitted to the base station, the status report request is used to request the base station to feed back the PDU that is not transmitted to the base station, and the feedback status report is used to indicate that the base station is not transmitted to the base station PDU.

An embodiment of the present invention provides a UE, where the UE can determine that a WLAN link occurs. When an abnormality occurs, a link abnormality indication is generated, and according to the link abnormality indication, the PDU to be transmitted is stopped from being distributed to the cellular network link and the WLAN link transmission, and the PDU to be transmitted is sent to the base station through the cellular network link, The link abnormality indication is used to indicate that an abnormality occurs in the WLAN link. The UE provided by the embodiment of the present invention can determine that the WLAN link is abnormal, and generate a link abnormality indication, so that the UE can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication, and The network link sends the PDU to be transmitted to the base station to ensure that the PDU to be transmitted can be transmitted normally, thereby preventing the UE from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, thereby being distributed to the WLAN link transmission. The PDU transmission failed.

As shown in FIG. 32, an embodiment of the present invention provides a UE, where the UE may include: a processor 110, a memory 111, and a system bus 112. The processor 110 and the memory 111 are connected by the system bus 112 and complete communication with each other.

The processor 110 can be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 111 may include a volatile memory such as a RAM; the memory 111 may also include a non-volatile memory such as a ROM, a flash memory, an HDD or an SSD; the memory 111 may also include a memory of the above kind combination.

When the UE is running, the processor 110 and the memory 111 may perform the method flow described in 27, which specifically includes:

The processor 110 is configured to receive a link abnormality message sent by the base station, where the link abnormality message carries the link abnormality indication, and stops the protocol data unit PDU to be transmitted according to the link abnormality indication. Distributing to the cellular network link and the WLAN link transmission, and transmitting the PDU to be transmitted to the base station through the cellular network link, the link abnormality indication is used to indicate that the WLAN link is abnormal; the memory 111. A code for storing the link abnormality message, a code of the link abnormality indication, a code of the PDU to be transmitted, and a software program for controlling the processor 110 to complete the foregoing process, so that the processing The processor 110 performs the above process by executing the software program and calling the code of the link abnormality message, the code of the link abnormality indication, and the code of the PDU to be transmitted.

Optionally, the processor 110 is further configured to acquire measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link, before receiving a link abnormality message sent by the base station.

The processor 110 is further configured to send a measurement report to the base station, where the measurement report includes measurement information of the WLAN link.

The processor 110 is specifically configured to send a status report request to the base station, and receive a feedback status report sent by the base station, and send, according to the feedback status report, to the base station by using the cellular network link. Denoting a PDU that is not transmitted to the base station, the status report request is used to request the base station to feed back the PDU that is not transmitted to the base station, and the feedback status report is used to indicate that the base station is not transmitted to the base station. PDU.

As shown in FIG. 33, an embodiment of the present invention provides a WT, where the WT may include: a processor 120, a memory 121, a transceiver 122, and a system bus 123. The processor 120, the memory 121, and the transceiver 122 are connected by the system bus 123 and complete communication with each other.

The processor 120 can be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

The memory 121 may include a volatile memory such as a RAM; the memory 121 may also include a non-volatile memory such as a ROM, a flash memory, an HDD or an SSD; the memory 121 may also include a memory of the above kind combination.

When the WT is running, the processor 120, the memory 121, and the transceiver 122 may perform the method flow described in FIG.

The processor 120 is configured to acquire measurement information of the WLAN link, and if the measurement information meets a preset abnormality determination condition, generate a link abnormality indication, where the measurement information is used to determine the WLAN link. Whether an abnormality occurs, the link abnormality indication is used to indicate that the WLAN link is abnormal; the transceiver 122 is configured to send the link abnormality indication to the base station, and the memory 121 is configured to store the abnormality. a code of measurement information of the WLAN link, a code of the preset abnormality determination condition, the link abnormality indication, and a software program that controls the processor 120 to complete the above process, so that the processor 120 executes the The software program and the code of the measurement information of the WLAN link, the code of the preset abnormality determination condition, and the link abnormality indication are completed, and the above process is completed.

Optionally, the transceiver 122 is configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.

As shown in FIG. 24, an embodiment of the present invention provides an AP, where the AP may include: Processor 70, transceiver 71, memory 72, and system bus 73. The processor 70, the transceiver 71 and the memory 72 are connected by the system bus 73 and complete communication with each other.

The processor 70 can be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

The transceiver 71 can be a module with transceiver function integrated by a transmitter and a receiver, or a module with a separate transmitter and a separate receiver.

The memory 72 may include volatile memory, such as RAM; the memory 72 may also include non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 72 may also include memory of the kind described above. combination.

When the AP is running, the processor 70, the transceiver 71, and the memory 72 may perform the method flow described in FIG. 4 or FIG.

The processor 70 is configured to monitor a packet loss rate, and when the packet loss rate is greater than or equal to a preset packet loss rate threshold, generate a link abnormality indication, where the packet loss rate is used to represent the AP forwarding. a ratio of failure of the PDU, the link abnormality indication is used to indicate that the WLAN link is abnormal; the transceiver 71 is configured to send the link abnormality indication generated by the processor 70 to the base station; the memory 72. A code for storing the packet loss rate, a code of the link abnormality indication, and a software program for controlling the processor 70 to complete the above process, so that the processor 70 executes the software program and invokes The code of the packet loss rate and the code of the link abnormality indication complete the above process.

Optionally, the transceiver 71 is configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication generated by the processor 70.

The AP provided by the embodiment of the present invention can monitor the packet loss rate, and when the packet loss rate is greater than or equal to the preset packet loss rate threshold, generate a link abnormality indication, and send the link abnormality indication to the base station, where the lost The packet rate is used to characterize the rate at which the AP fails to forward the PDU, and the link anomaly indication is used to indicate that an abnormality occurs in the WLAN link. The AP provided by the embodiment of the present invention can monitor the packet loss rate, and the packet loss rate is greater than or equal to a preset packet loss rate threshold. Generating a link abnormality indication and transmitting the link abnormality indication to the base station, so that the base station can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication, and send the PDU to the UE through the cellular network link. The PDU to be transmitted is used to ensure that the PDU to be transmitted can be transmitted normally, thereby preventing the base station from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, and the PDU transmission transmitted to the WLAN link fails to be transmitted.

As shown in FIG. 25, an embodiment of the present invention provides an AP, where the AP may include a processor 80, a transceiver 81, a memory 82, and a system bus 83. The processor 80, the transceiver 81 and the memory 82 are connected by the system bus 83 and complete communication with each other.

The processor 80 can be a CPU, or an ASIC, or one or more integrated circuits configured to implement embodiments of the present invention.

The transceiver 81 can be a module with transceiver function integrated by a transmitter and a receiver, or a module with a separate transmitter and a separate receiver.

The memory 82 can include volatile memory, such as RAM; the memory 82 can also include non-volatile memory, such as ROM, flash memory, HDD or SSD; the memory 82 can also include memory of the kind described above. combination.

When the AP is running, the processor 80, the transceiver 81, and the memory 82 may perform any one of the method processes described in FIG. 5, FIG. 6, or FIG.

The processor 80 is configured to determine a sequence number SN of a data packet that is transmitted to the WLAN link, and the data packet includes at least one PDU, where the SN of the data packet is used to determine whether the WLAN link is abnormal. The transceiver 81 is configured to send a status report to the base station, where the status report includes an SN of the data packet determined by the processor 80, and the memory 82 is configured to store an SN of the data packet. a code, a code of the status report, and a software program that controls the processor 80 to perform the process described above, such that the processor 80 executes the software program and invokes a code of the SN of the data packet and the status report The code that completes the above process.

Optionally, the transceiver 81 is further configured to receive, by the processor 80, the data packet sent by the base station before determining, by the processor 80, the SN that is sent to the WLAN link transmission failed packet, where the data packet is The SN of the data packet is included in the header.

The processor 80 is specifically configured to determine an SN of the data packet according to a packet header of the data packet.

The AP provided by the embodiment of the present invention can determine the SN of the data packet that is transmitted to the WLAN link and fails to transmit, and send a status report to the base station, where the data packet includes at least one PDU, and the SN of the data packet is used to determine the WLAN link. Whether an exception occurs or not, the status report includes the SN of the packet. The AP provided by the embodiment of the present invention can send a status report to the base station, so that the base station determines that the WLAN link is abnormal according to the status report, and generates a link abnormality indication, so that the base station can stop according to the link abnormality indication. The PDU to be transmitted is distributed to the WLAN link transmission, and the PDU to be transmitted is sent to the UE through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted, thereby preventing the base station from continuously distributing the PDU to be transmitted to occur. An abnormal WLAN link transmission causes the PDU transmission transmitted to the WLAN link to fail.

Embodiment 5

As shown in FIG. 26, an embodiment of the present invention provides a communication system, which may include any one of the base stations as described in FIG. 12 to FIG. 14, and any one of the UEs as shown in FIG. 15 to FIG. The communication system provided by the embodiment of the present invention may also include the base station as described in FIG. 21, the UE as shown in FIG. 22 or FIG. 23, and the AP as described in FIG.

The base station can obtain the link abnormality indication, and according to the link abnormality indication, stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission, and send the PDU to be transmitted to the UE through the cellular network link; The UE can generate a link abnormality indication when determining that the WLAN link is abnormal, and stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and through the cellular network link Sending a PDU to be transmitted to the base station; the AP can monitor the packet loss rate, and when the packet loss rate is greater than or equal to the preset packet loss rate threshold, generate a link abnormality indication, and send the link abnormality indication to the base station, where The link anomaly indication is used to indicate the WLAN The link is abnormal. The packet loss rate is used to indicate the rate at which the AP fails to forward the PDU.

Further, the communication system provided by the embodiment of the present invention may also include any one of the base stations described in FIG. 12 to FIG. 14 , as shown in FIG. 15 to FIG. 17 , and as described in FIG. 19 or FIG. 20 . The communication system provided by the embodiment of the present invention may also include the base station as described in FIG. 21, the UE as shown in FIG. 22 or FIG. 23, and the AP as described in FIG. 25.

The base station can obtain the link abnormality indication, and according to the link abnormality indication, stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission, and send the PDU to be transmitted to the UE through the cellular network link; The UE can generate a link abnormality indication when determining that the WLAN link is abnormal, and stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and through the cellular network link Sending a PDU to be transmitted to the base station; in the communication system provided by the embodiment of the present invention, the AP can determine the SN of the data packet that is transmitted to the WLAN link and fails to transmit, and send a status report to the base station, so that the base station determines according to the status report. The WLAN link is abnormal, and a link abnormality indication is generated, so that the base station can stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication, and send the to-be-transmitted to the UE through the cellular network link. a PDU, wherein the data packet includes at least one PDU, and the SN of the data packet is used to determine whether an abnormality occurs in the WLAN link, and the status report includes the data The SN of the package.

It can be understood that the base station in the communication system provided by the embodiment of the present invention may be any one of the base stations as shown in FIG. 12 to FIG. 14 or FIG. 21, and can execute as shown in FIG. 1, FIG. 8, FIG. 10 or FIG. For the processing method of the WLAN link abnormality in any one of the MSAs, the specific functions of the modules or devices in the base station and the execution method may refer to the implementation shown in FIG. 1, FIG. 8, FIG. 10 or FIG. The description in the example will not be repeated here.

The UE in the communication system provided by the embodiment of the present invention may be any UE as described in FIG. 15 to FIG. 17 or FIG. 22 or FIG. 23, and can perform the method as described in FIG. 3, FIG. 8, FIG. 10 or FIG. Any one of the processing methods of the WLAN link abnormality in the MSA, the specific functions of the modules or devices in the UE and the flow of the execution method may refer to the embodiment shown in FIG. 1, FIG. 8, FIG. 10 or FIG. The description is not repeated here.

In the embodiment of the present invention, the AP in the communication system shown in FIG. 26 may be the AP as shown in FIG. 18 or FIG. 24, and the method for processing the WLAN link abnormality in the MSA described in FIG. 4 or FIG. The specific functions of the modules or devices in the AP and the flow of the execution method may refer to the related methods in the description in the embodiment shown in FIG. 4 or FIG. 8 , and details are not described herein again.

Alternatively, the AP in the communication system shown in FIG. 26 may also be any type of AP as described in FIG. 19, FIG. 20 or FIG. 25, and is capable of performing WLAN in the MSA as described in FIG. 5, FIG. 6, or FIG. For the processing of the link abnormality, the specific functions of the modules or devices in the AP and the flow of the execution method may be referred to the description in the embodiment shown in FIG. 5, FIG. 6, or FIG. 10, and details are not described herein again.

Optionally, as shown in FIG. 34, the communications system provided by the embodiment of the present invention may further include: any one of the base stations as described in FIG. 12 to FIG. The WT, as shown in FIG. 31, and the AP; or the communication system provided by the embodiment of the present invention may also include the base station as shown in FIG. 21, the UE as shown in FIG. 22 or FIG. 23, and the WT as shown in FIG. , as well as AP.

The base station can obtain the link abnormality indication, and according to the link abnormality indication, stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission, and send the PDU to be transmitted to the UE through the cellular network link; The UE can generate a link abnormality indication when determining that the WLAN link is abnormal, and stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and through the cellular network link Sending the PDU to be transmitted to the base station; the WT can obtain the measurement information of the WLAN link, and if the measurement information meets the preset abnormality determination condition, generate a link abnormality indication, and send the link abnormality indication to the base station.

Further, the communication system provided by the embodiment of the present invention may further include: any one of the base stations as described in FIG. 12 to FIG. 14, the UE as shown in FIG. 29 or 30, the WT as shown in FIG. 31, and the AP; Alternatively, the communication system provided by the embodiment of the present invention may further include: any one of the base stations as described in FIG. 12 to FIG. 14, the UE as shown in FIG. 32, the WT as shown in FIG. 33, and the AP.

The base station can obtain the link abnormality indication, and according to the link abnormality indication, Stop distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission, and send the PDU to be transmitted to the UE through the cellular network link; the UE receives the link abnormality message sent by the base station, and according to the link abnormal message Carrying the link abnormality indication, stopping distributing the PDU to be transmitted to the cellular network link and the WLAN link transmission, and transmitting the PDU to be transmitted to the base station through the cellular network link; the WT can acquire the measurement information of the WLAN link, If the measurement information satisfies the preset abnormality determination condition, a link abnormality indication is generated, and the link abnormality indication is sent to the base station.

The UE in the communication system as shown in FIG. 34 may be any one of the UEs as shown in FIG. 15 to FIG. 17 or as shown in FIG. 22 or FIG. 23, and can perform as shown in FIG. 3, FIG. 8, FIG. 10 or FIG. For the processing method of the WLAN link abnormality in any one of the MSAs, the specific functions of the modules or devices in the UE and the flow of the execution method may refer to the embodiment shown in FIG. 1, FIG. 8, FIG. 10 or FIG. The description in the description will not be repeated here.

Alternatively, the UE may also be any UE described in the embodiment shown in FIG. 29, FIG. 30 or FIG. 32, and can perform the processing of the WLAN link abnormality in the MSA as described in the embodiment shown in FIG. For the specific function and execution method of each module or device in the UE, reference may be made to the description in the embodiment shown in FIG. 27, and details are not described herein again.

The WT in the communication system shown in FIG. 34 may be the WT described in the embodiment shown in FIG. 31 or FIG. 33, and is capable of performing the WLAN link abnormality in the MSA as described in the embodiment shown in FIG. The processing of the specific function and the execution method of each module or device in the WT can be referred to the description in the embodiment shown in FIG. 28, and details are not described herein again.

With the system provided by the embodiment of the present invention, in the DL, the base station can obtain the link abnormality indication, and determine that the WLAN link is abnormal according to the link abnormality indication, so that the base station can stop the to-be-transmitted according to the link abnormality indication. The PDU is distributed to the WLAN link transmission, and the PDU to be transmitted is sent to the UE through the cellular network link to ensure that the PDU to be transmitted can be normally transmitted, thereby preventing the base station from continuously distributing the PDU to be transmitted to the abnormal WLAN chain. The transmission of the PDU causes the transmission of the PDU transmitted to the WLAN link to fail; in the UL, the UE can determine that the WLAN link is abnormal, generate a link abnormality indication, or receive a link abnormality message sent by the base station from the chain Road exception message Obtaining a link abnormality indication, so that the UE may stop distributing the PDU to be transmitted to the WLAN link transmission according to the link abnormality indication, and send the PDU to be transmitted to the base station through the cellular network link to ensure the PDU to be transmitted. The transmission can be performed normally, thereby preventing the UE from continuously distributing the PDU to be transmitted to the abnormal WLAN link transmission, and the PDU transmission transmitted to the WLAN link transmission fails.

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional module described above is exemplified. In practical applications, the above function assignment can be completed by different functional modules as needed. The internal structure of the device is divided into different functional modules to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit is implemented in the form of a software functional unit and is independent When the product is sold or used, it can be stored on a computer readable storage medium. Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, or all or part of the technical solution, may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a read only memory (English full name: Read-Only Memory, English abbreviation: ROM), a random access memory (English full name: Random Access Memory, English abbreviation: RAM), magnetic A variety of media that can store program code, such as a disc or a disc.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

A method for processing a wireless local area network WLAN link abnormality in a multi-stream aggregation MSA, comprising:

The base station acquires a link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link;

The base station stops distributing the protocol data unit PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the to-be-set to the user equipment UE through the cellular network link. The transmitted PDU.
The method according to claim 1, wherein the base station obtains a link abnormality indication, including:

When the base station determines that an abnormality occurs in the WLAN link, the base station generates the link abnormality indication.
The method according to claim 2, wherein the method for determining, by the base station, that the WLAN link is abnormal comprises:

Determining, by the base station, a retransmission PDU that is distributed to the WLAN link transmission in at least one retransmission PDU;

If the retransmitted PDU transmitted to the WLAN link meets a preset condition, the base station determines that the WLAN link is abnormal,

The retransmission PDU that is distributed to the WLAN link transmission meets preset conditions, including:

And the retransmitted PDU distributed to the WLAN link has a PDU whose retransmission number is greater than or equal to a preset first threshold, or the retransmission PDU that is distributed to the WLAN link transmission The ratio of the number to the total number of PDUs transmitted to the WLAN link transmission is greater than or equal to a preset second threshold.
The method according to claim 3, wherein the method further comprises: before the base station determines that the retransmission PDU is transmitted to the WLAN link transmission in the at least one retransmission PDU, the method further includes:

Transmitting, by the base station, the PDU to be transmitted to the cellular network link and the WLAN link transmission;

The base station records an identifier of a PDU transmitted to the WLAN link for transmission;

Obtaining, by the base station, an identifier of the at least one retransmission PDU;

Determining, by the base station, a retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, including:

The base station determines, according to the identifier of the at least one retransmission PDU and the identifier of the PDU transmitted to the WLAN link, the retransmission PDU that is distributed to the WLAN link transmission.
The method according to claim 4, wherein the identifier of the at least one retransmission PDU is a sequence number SN of the at least one retransmission PDU,

Obtaining, by the base station, the identifier of the at least one retransmission PDU, including:

Receiving, by the base station, a first status report sent by the UE, where the first status report includes an SN of the at least one retransmitted PDU;

Obtaining, by the base station, the SN of the at least one retransmission PDU from the first status report.
The method according to claim 4, wherein the identifier of the at least one retransmission PDU is an SN distributed to a data packet in which the WLAN link transmission fails, and the data packet includes the at least one retransmission PDU ,

Obtaining, by the base station, the identifier of the at least one retransmission PDU, including:

The base station receives a second status report sent by the access point AP, where the second status report includes an SN of the data packet;

The base station acquires an SN of the data packet from the second status report.
The method according to claim 2, wherein the method for determining, by the base station, that the WLAN link is abnormal comprises:

The base station receives a measurement report, where the measurement report includes measurement information of the WLAN link;

If the measurement information satisfies a preset abnormality determination condition, the base station determines that the WLAN link is abnormal.
The method according to claim 1, wherein the base station obtains a link abnormality indication, including:

The base station receives a link abnormality message sent by the WLAN terminal WT, and the link abnormality message carries the link abnormality indication.
The method according to claim 1, wherein the base station obtains a link abnormality indication, including:

The base station receives the link abnormality message sent by the UE, and the link abnormality message carries the link abnormality indication.
The method according to claim 1, wherein the base station obtains a link abnormality indication, including:

The base station receives a link abnormality message sent by the AP, where the link abnormality message carries the link abnormality indication.
The method according to any one of claims 1 to 10, wherein the PDU to be transmitted includes not transmitted to the UE in a PDU that has been distributed to the cellular network link and the WLAN link transmission PDU,

The sending, by the cellular network link, the PDU to be transmitted to the UE includes:

Sending, by the base station, a status report request to the UE, where the status report request is used to request the UE to feed back the PDU that is not transmitted to the UE;

Receiving, by the base station, a feedback status report sent by the UE, where the feedback status report is used to indicate the PDU that is not transmitted to the UE;

And transmitting, by the base station, the PDU that is not transmitted to the UE by using the cellular network link to the UE according to the feedback status report.
The method according to any one of claims 1 to 11, wherein the method further comprises:

The base station controls the UE to reestablish a WLAN link according to the link abnormality indication.
A method for processing a wireless local area network WLAN link abnormality in a multi-stream aggregation MSA, comprising:

When the user equipment UE determines that the WLAN link is abnormal, the UE generates a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal;

The UE stops distributing the protocol data unit PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and passes the cellular network The link sends the PDU to be transmitted to the base station.
The method of claim 13 wherein the method further comprises:

The UE sends the link abnormality indication to the base station, where the link abnormality indication is used by the base station to determine that the WLAN link is abnormal.
The method according to claim 13 or 14, wherein the method for the UE to determine that an abnormality occurs in the WLAN link comprises:

Determining, by the UE, a retransmission PDU that is distributed to the WLAN link transmission in at least one retransmission PDU;

If the retransmitted PDU transmitted to the WLAN link meets a preset condition, the UE determines that the WLAN link is abnormal,

The retransmission PDU that is distributed to the WLAN link transmission meets preset conditions, including:

And the retransmitted PDU distributed to the WLAN link has a PDU whose retransmission number is greater than or equal to a preset first threshold, or the retransmission PDU that is distributed to the WLAN link transmission The ratio of the number to the total number of PDUs transmitted to the WLAN link transmission is greater than or equal to a preset second threshold.
The method according to claim 15, wherein the method further comprises: before the UE determines to retransmit the retransmission PDU of the WLAN link transmission in the at least one retransmission PDU, the method further comprises:

Transmitting, by the UE, the PDU to be transmitted to the cellular network link and the WLAN link transmission;

The UE records a sequence number SN of a PDU transmitted to the WLAN link transmission;

Obtaining, by the UE, the SN of the at least one retransmission PDU;

Determining, by the UE, the retransmission PDUs that are distributed to the WLAN link transmission in the at least one retransmission PDU, including:

Determining, by the UE, the retransmission PDUs transmitted to the WLAN link transmission according to the SN of the at least one retransmission PDU and the SN of the PDU transmitted to the WLAN link.
The method according to claim 13 or 14, wherein the method for the UE to determine that an abnormality occurs in the WLAN link comprises:

Obtaining, by the UE, measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link;

If the measurement information satisfies a preset abnormality determination condition, the UE determines that the WLAN link is abnormal.
The method according to any one of claims 13-17, wherein the PDU to be transmitted includes not transmitted to the base station in a PDU that has been distributed to the cellular network link and the WLAN link transmission PDU,

The sending, by the cellular network link, the PDU to be transmitted to the base station includes:

Sending, by the UE, a status report request to the base station, where the status report request is used to request the base station to feed back the PDU that is not transmitted to the base station;

Receiving, by the UE, a feedback status report sent by the base station, where the feedback status report is used to indicate the PDU that is not transmitted to the base station;

And transmitting, by the UE, the PDU that is not transmitted to the base station to the base station by using the cellular network link according to the feedback status report.
A method for processing a wireless local area network WLAN link abnormality in a multi-stream aggregation MSA, comprising:

The user equipment UE receives the link abnormality message sent by the base station, where the link abnormality message carries the link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal;

The UE stops distributing the protocol data unit PDU to be transmitted to the cellular network link and the WLAN link transmission according to the link abnormality indication, and sends the to-be-transmitted to the base station by using the cellular network link. PDU.
The method according to claim 19, wherein before the UE receives the link abnormality message sent by the base station, the method further includes:

Obtaining, by the UE, measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link;

The UE sends a measurement report to the base station, where the measurement report includes measurement information of the WLAN link.
The method according to claim 19 or 20, wherein the PDU to be transmitted comprises a PDU that has been distributed to the cellular network link and the PDU transmitted by the WLAN link is not transmitted to the base station,

The sending, by the cellular network link, the PDU to be transmitted to the base station includes:

Sending, by the UE, a status report request to the base station, where the status report request is used to request the base station to feed back the PDU that is not transmitted to the base station;

Receiving, by the UE, a feedback status report sent by the base station, where the feedback status report is used to indicate the PDU that is not transmitted to the base station;

And transmitting, by the UE, the PDU that is not transmitted to the base station to the base station by using the cellular network link according to the feedback status report.
A method for processing a wireless local area network WLAN link abnormality in a multi-stream aggregation MSA, comprising:

The WLAN terminal WT acquires measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link;

If the measurement information meets the preset abnormality determination condition, the WT generates a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link is abnormal;

The WT sends the link abnormality indication to a base station.
The method according to claim 22, wherein the WT sends the link abnormality indication to a base station, including:

The WT sends a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.
A method for processing a wireless local area network WLAN link abnormality in a multi-stream aggregation MSA, comprising:

The access point AP monitors a packet loss rate, where the packet loss rate is used to represent a ratio of failure of the AP forwarding protocol data unit PDU;

The AP generating chain when the packet loss rate is greater than or equal to a preset packet loss rate threshold a road abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link;

The AP sends the link abnormality indication to a base station.
The method according to claim 24, wherein the sending, by the AP, the link abnormality indication to a base station comprises:

The AP sends a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.
A method for processing a wireless local area network WLAN link abnormality in a multi-stream aggregation MSA, comprising:

The access point AP determines a sequence number SN of the data packet that is transmitted to the WLAN link transmission failure, the data packet includes at least one protocol data unit PDU, and the SN of the data packet is used to determine whether an abnormality occurs in the WLAN link;

The AP sends a status report to the base station, where the status report includes the SN of the data packet.
The method according to claim 26, wherein the method further comprises: before the AP determines to distribute the SN of the data packet to which the WLAN link transmission fails, the method further comprising:

Receiving, by the AP, the data packet sent by the base station, where a packet header of the data packet includes an SN of the data packet;

The AP determines the SN of the data packet that is transmitted to the WLAN link transmission failure, including:

The AP determines an SN of the data packet according to a packet header of the data packet.
A base station, comprising:

An acquiring unit, configured to obtain a link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link;

a transmitting unit, configured to stop distributing, according to the link abnormality indication acquired by the acquiring unit, a protocol data unit PDU to be transmitted to a cellular network link and the WLAN link transmission, and through the cellular network link Sending the PDU to be transmitted to the user equipment UE.
The base station according to claim 28, characterized in that

The acquiring unit is specifically configured to generate the link abnormality indication when it is determined that the WLAN link is abnormal.
The base station according to claim 29, characterized in that

The acquiring unit is specifically configured to determine a retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, and if the retransmission PDU that is transmitted to the WLAN link transmission meets a preset condition, determine The WLAN link is abnormal.

The retransmission PDU that is distributed to the WLAN link transmission meets preset conditions, including:

And the retransmitted PDU distributed to the WLAN link has a PDU whose retransmission number is greater than or equal to a preset first threshold, or the retransmission PDU that is distributed to the WLAN link transmission The ratio of the number to the total number of PDUs transmitted to the WLAN link transmission is greater than or equal to a preset second threshold.
The base station according to claim 30, characterized in that

The transmitting unit is further configured to: before the obtaining unit determines that the retransmission PDU of the WLAN link transmission is distributed in the at least one retransmission PDU, distribute the PDU to be transmitted to the cellular network link and The WLAN link transmission;

The base station further includes a recording unit,

The recording unit is configured to record an identifier of a PDU that is transmitted by the transmission unit to the WLAN link;

The obtaining unit is further configured to acquire an identifier of the at least one retransmission PDU;

The obtaining unit is specifically configured to determine, according to the identifier of the at least one retransmission PDU and the identifier of the PDU that is transmitted to the WLAN link and recorded by the recording unit, to determine the distribution to the WLAN link. Transmitted PDUs transmitted.
The base station according to claim 31, wherein the identifier of the at least one retransmission PDU acquired by the acquiring unit is a sequence number SN of the at least one retransmission PDU,

The acquiring unit is configured to receive a first status report sent by the UE, and obtain an SN of the at least one retransmitted PDU from the first status report, where the first status report includes the at least one An SN that retransmits a PDU.
The base station according to claim 31, wherein the identifier of the at least one retransmission PDU acquired by the acquiring unit is that the transmission to the WLAN link is lost. The SN of the lost data packet, the data packet including the at least one retransmitted PDU,

The acquiring unit is specifically configured to receive a second status report sent by the access point AP, and obtain an SN of the data packet from the second status report, where the second status report includes the data packet SN.
The base station according to claim 29, characterized in that

The acquiring unit is configured to receive a measurement report, where the measurement report includes measurement information of the WLAN link, and if the measurement information meets a preset abnormality determination condition, determining that the WLAN link is abnormal.
The base station according to claim 28, characterized in that

The acquiring unit is specifically configured to receive a link abnormality message sent by the WLAN terminal WT, where the link abnormality message carries the link abnormality indication.
The base station according to claim 28, characterized in that

The acquiring unit is specifically configured to receive a link abnormality message sent by the UE, where the link abnormality message carries the link abnormality indication.
The base station according to claim 28, characterized in that

The acquiring unit is specifically configured to receive a link abnormality message sent by the AP, where the link abnormality message carries the link abnormality indication.
The base station according to any one of claims 28 to 37, wherein the PDU to be transmitted includes not transmitted to the UE in a PDU that has been distributed to the cellular network link and the WLAN link. PDU,

The transmitting unit is specifically configured to send a status report request to the UE, and receive a feedback status report sent by the UE, and send, by using the cellular network link, the status to the UE according to the feedback status report. a PDU that is not transmitted to the UE, the status report request is used to request the UE to feed back the PDU that is not transmitted to the UE, and the feedback status report is used to indicate the PDU that is not transmitted to the UE .
The base station according to any one of claims 28 to 38, wherein the base station further comprises a control unit,

The control unit is configured to control the UE to re-establish a WLAN link according to the link abnormality indication acquired by the acquiring unit.
A user equipment (UE), comprising:

a generating unit, configured to generate a link abnormality indication, where the determining unit determines that an abnormality occurs in the WLAN link, where the link abnormality indication is used to indicate that the WLAN link is abnormal;

a transmitting unit, configured to stop distributing, according to the link abnormality indication generated by the generating unit, a protocol data unit PDU to be transmitted to a cellular network link and the WLAN link transmission, and through the cellular network link Sending the PDU to be transmitted to the base station.
The UE according to claim 40, wherein the UE further comprises a sending unit,

The sending unit is configured to send, to the base station, the link abnormality indication generated by the generating unit, where the link abnormality indication is used by the base station to determine that an abnormality occurs in the WLAN link.
The UE according to claim 40 or 41, characterized in that

The determining unit is configured to determine a retransmission PDU that is distributed to the WLAN link transmission in the at least one retransmission PDU, and if the retransmission PDU that is transmitted to the WLAN link transmission meets a preset condition, determine the location An abnormality occurs in the WLAN link.

The retransmission PDU that is distributed to the WLAN link transmission meets preset conditions, including:

And the retransmitted PDU distributed to the WLAN link has a PDU whose retransmission number is greater than or equal to a preset first threshold, or the retransmission PDU that is distributed to the WLAN link transmission The ratio of the number to the total number of PDUs transmitted to the WLAN link transmission is greater than or equal to a preset second threshold.
The UE of claim 42, wherein

The transmitting unit is further configured to: before the determining unit determines that the retransmission PDU of the WLAN link transmission is distributed in the at least one retransmission PDU, distribute the PDU to be transmitted to the cellular network link and The WLAN link transmission;

The UE further includes a recording unit and an acquiring unit,

The recording unit is configured to record a serial number SN of the PDU transmitted by the transmission unit to the WLAN link;

The acquiring unit is configured to acquire an SN of the at least one retransmission PDU;

The determining unit is specifically configured to determine, according to the SN of the at least one retransmission PDU acquired by the acquiring unit, and the SN of the PDU that is transmitted to the WLAN link and recorded by the recording unit, to determine the distribution. Retransmission PDUs transmitted to the WLAN link.
The UE according to claim 40 or 41, characterized in that

The determining unit is specifically configured to acquire measurement information of the WLAN link, and if the measurement information meets a preset abnormality determination condition, the UE determines that an abnormality occurs in the WLAN link, and the measurement information is used by Determining whether an abnormality has occurred in the WLAN link.
The UE according to any one of claims 40 to 44, wherein the PDU to be transmitted includes a PDU that has been distributed to the cellular network link and the WLAN link transmission is not transmitted to the base station. PDU,

The transmitting unit is specifically configured to send a status report request to the base station, and receive a feedback status report sent by the base station, and send, by using the cellular network link, the status report to the base station according to the feedback status report. a PDU that is not transmitted to the base station, the status report request is used to request the base station to feed back the PDU that is not transmitted to the base station, and the feedback status report is used to indicate the PDU that is not transmitted to the base station. .
A user equipment (UE), comprising:

a receiving unit, configured to receive a link abnormality message sent by the base station, where the link abnormality message carries the link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link;

a transmitting unit, configured to stop distributing, according to the link abnormality indication received by the receiving unit, the protocol data unit PDU to be transmitted to the cellular network link and the WLAN link transmission, and to the base station by using the cellular network link Sending the PDU to be transmitted.
The UE according to claim 46, wherein the UE further comprises an obtaining unit and a sending unit,

The acquiring unit is configured to acquire measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link, before the receiving unit receives a link abnormality message sent by the base station;

The sending unit is configured to send a measurement report to the base station, where the measurement report includes measurement information of the WLAN link.
The UE according to claim 46 or 47, wherein the PDU to be transmitted includes a PDU that has been distributed to the cellular network link and the PDU transmitted by the WLAN link is not transmitted to the base station,

The transmitting unit is specifically configured to send a status report request to the base station, and receive a feedback status report sent by the base station, and send, by using the cellular network link, the status report to the base station according to the feedback status report. a PDU that is not transmitted to the base station, the status report request is used to request the base station to feed back the PDU that is not transmitted to the base station, and the feedback status report is used to indicate the PDU that is not transmitted to the base station. .
A wireless local area network terminal WT, comprising:

An acquiring unit, configured to acquire measurement information of the WLAN link, where the measurement information is used to determine whether an abnormality occurs in the WLAN link;

a generating unit, configured to generate a link abnormality indication, where the link abnormality indication is used to indicate that an abnormality occurs in the WLAN link, if the measurement information acquired by the acquiring unit meets a preset abnormality determining condition;

And a sending unit, configured to send the link abnormality indication to the base station.
The WT according to claim 49, characterized in that

The sending unit is specifically configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication.
An access point AP, comprising:

a monitoring unit, configured to monitor a packet loss rate, where the packet loss rate is used to represent a rate at which the AP forwarding protocol data unit PDU fails;

a generating unit, configured to generate a link abnormality indication, where the link abnormality indication is used to indicate that the WLAN link occurs, when the packet loss rate monitored by the monitoring unit is greater than or equal to a preset packet loss rate threshold abnormal;

And a sending unit, configured to send, to the base station, the link abnormality indication generated by the generating unit.
The AP according to claim 51, characterized in that

The sending unit is configured to send a link abnormality message to the base station, where the link abnormality message carries the link abnormality indication generated by the generating unit.
An access point AP, comprising:

a determining unit, configured to determine a sequence number SN of the data packet that is transmitted to the WLAN link transmission failure, the data packet includes at least one protocol data unit PDU, and the SN of the data packet is used to determine whether the WLAN link is abnormal ;

And a sending unit, configured to send a status report to the base station, where the status report includes an SN of the data packet determined by the determining unit.
The AP according to claim 53, wherein the AP further comprises a receiving unit,

The receiving unit is configured to receive, before the determining unit determines that the SN of the data packet that is transmitted to the WLAN link transmission fails, the data packet sent by the base station, where the data packet includes the data packet SN;

The determining unit is specifically configured to determine an SN of the data packet according to a packet header of the data packet.
A communication system, comprising:

The base station according to any one of claims 28 to 39, the user equipment UE according to any one of claims 40 to 45, and the access point AP according to claim 51 or 52; or

The base station according to any one of claims 28 to 39, the UE according to any one of claims 40 to 45, and the AP according to claim 53 or 54; or

The base station according to any one of claims 28 to 39, the UE according to any one of claims 40 to 45, and the wireless local area network terminal WT according to claim 49 or 50; or

A base station according to any of claims 28-39, a UE according to any of claims 46-48, and a WT as claimed in claim 49 or 50.