WO2012062186A1

WO2012062186A1 - Method and system for receiving service under carrier aggregation

Info

Publication number: WO2012062186A1
Application number: PCT/CN2011/081809
Authority: WO
Inventors: 苟伟; 马子江; 夏树强; 王斌
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-12
Filing date: 2011-11-04
Publication date: 2012-05-18
Also published as: CN102469412B; CN102469412A

Abstract

Provided are a method and a system for receiving a service under carrier aggregation. The method includes: determining by a terminal receiving information and/or component carrier information about an MBMS, and reporting the same to a network side device; determining by the network side device a component carrier which the terminal is interested in according to the received receiving information and/or component carrier information about the MBMS service determined by the terminal; and scheduling the terminal according to the component carrier which the terminal is interested in, so that the terminal can receive the MBMS service or a unicast service. The present invention can effectively avoid the situation wherein a data service cannot be received by a terminal caused by inappropriate processing at the network side.

Description

Method and system for realizing service reception under carrier aggregation

Technical field

The present invention relates to a multi-carrier aggregation system, and more particularly to a method and system for implementing service reception under carrier aggregation.

Background technique

With the rapid development of the Internet and the popularity of large-screen multi-function mobile phones, a large number of mobile data multimedia services and various high-bandwidth multimedia services have emerged, such as: video conferencing, television broadcasting, video on demand, video advertising, online education, interactive games, etc. Not only meets the rising business needs of mobile users, but also brings new business growth points to mobile operators. These mobile data multimedia services require multiple users to receive the same data at the same time, and have the characteristics of large amount of data, long duration, and delay sensitivity compared with general data services. In order to effectively utilize mobile network resources, the 3rd Generation Partnership Project (3GPP) proposes a Multimedia Broadcast Multicast Service (MBMS) service, which is a kind of data from one data. The technology of transmitting data to multiple targets realizes the sharing of resources of the network (including the core network and the access network) and improves the utilization of network resources (especially air interface resources). The MBMS service defined by 3GPP can not only realize plain text low-rate message class multicast and broadcast, but also realize high-speed multimedia service broadcast and multicast, and provide a variety of rich video, audio and multimedia services, which undoubtedly conforms to future mobile The trend of data development provides a better business prospect for the development of third-generation digital communication (3G).

In the Enhanced Long Term Evolution (LTE-A) system, multi-carrier aggregation technology is introduced, that is, carriers with multiple different frequencies (segments) in one cell, which may be continuous or discrete between the carrier frequencies, and simultaneously on the network side. Two or more carriers are used to transmit data for one User Equipment (UE, also referred to as a terminal). The terminal simultaneously receives data on two or more carriers. Based on current standards, the following conclusions are accepted by the standards organization and written into the corresponding agreements.

The provisions on multi-carrier aggregation technology include the following: Each terminal supports aggregation of at least 2 component carriers (CC). The network side allocates a primary cell (Primary Cell, referred to as Pcell) indicating which carrier is the terminal, and which carrier is a secondary cell (Scell) of the terminal.

The idle state terminal resides in its own primary cell.

The primary cell is always active.

The network side can turn off or call a secondary cell that is deactivated and turned on or called an active terminal.

The terminal does not receive a Physical Downlink Control Channel (PDCCH) in the closed secondary cell.

The terminal does not receive the physical downlink shared channel in the closed secondary cell (Physical Downlink)

Shared Channel, referred to as PDSCH).

The channel does not perform channel quality indicator (CQI) measurement of the downlink carrier in the closed secondary cell.

The initial default state of the secondary cell is deactivated.

The terminal only receives broadcast system information in the primary cell (Broadcast Control Channel, referred to as

BCCH ) and paging messages ( Paging message ).

Based on the above conclusions, the following specific problems can be analyzed:

It is assumed that a multimedia broadcast multicast service single frequency network (MBSFN) area is transmitting an MBMS service, and further, one (some) cells in the MBSFN area have multiple component carriers (CC). For example, there are three component carriers, which are respectively recorded as CC1, CC2, and CC3, where the component carrier 2 (CC2) being used transmits the MBMS service in MBSFN mode. It is further assumed that the Pcell of some terminals in this cell(s) is configured as CC2, and the Pcell of some terminals is CC1 or CC3, that is, CC2 is its Scell for some terminals.

The above scenario is a very common scenario in a system where carrier aggregation is the main technology. However, the above scenarios have some problems, which are in accordance with the existing carrier aggregation technical specifications. The problem is: The network side can configure, shut down, and enable its Scell for the terminal, and the conditions for the current shutdown and opening are based on the requirements related to the unicast service, and the relevant requirements of the MBMS service are not considered. That If the Scells of some terminals are closed on the network side, and the Scells of these terminals are CC2 carriers, then these terminals cannot receive PDCCH, PDSCH, and broadcast system information on their closed Scell (CC2) according to the existing technical specifications. And paging messages, etc., these limitations ultimately result in the terminal not being able to receive MBMS traffic on its component carrier CC2.

In another case, the terminal cannot receive the MBMS service, that is, the terminal wants to receive the MBMS service on a certain component carrier, but the component carrier allocated by the network side for the terminal does not include the component carrier of the MBMS service.

Summary of the invention

It is an object of the present invention to provide a method and system for implementing service reception under carrier aggregation, so as to effectively avoid the situation that the terminal cannot properly receive multimedia data services due to improper processing of the network side device.

In order to solve the above technical problem, the present invention provides a method for implementing service reception under carrier aggregation, including: determining, by a terminal, reception information and/or component carrier information of a multimedia broadcast multicast service (MBMS), and reporting the information to a network side device Determining, by the network side device, the component carrier that is interested in the terminal according to the received information and/or component carrier information of the MBMS service that is determined by the terminal, and according to the component carrier that is interested in the terminal, the terminal Scheduling is performed to enable the terminal to receive an MBMS service or a unicast service.

The receiving information of the MBMS service determined by the terminal refers to the information of the MBMS service that the terminal is receiving and/or about to receive and is interested in; or the receiving information of the MBMS service determined by the terminal refers to the MBMS service that the terminal has stopped receiving. Information.

The received information of the MBMS service includes one or more of the following information: MBMS service identification information, temporary mobile group identifier corresponding to the MBMS service, and MBMS service single frequency network area information.

The component carrier information determined by the terminal refers to that the terminal is receiving and/or about to receive

The information of the component carrier where the MBMS service is located; or the component carrier information determined by the terminal refers to the information of the component carrier where the MBMS service that the terminal has stopped receiving; or the component carrier information determined by the terminal refers to the terminal passing the measurement Obtain the channel quality to meet the terminal receiving requirements The information of the component carrier is determined by the information of the component carrier; or the component carrier information determined by the terminal is information of the component carrier within the range of the radio frequency receiving capability determined by the terminal according to the receiving capability of the terminal.

The component carrier information includes information of a component carrier that the terminal desires to camp on or is in an active state, and/or information of a component carrier that the terminal desires to receive the paging message.

The step of scheduling the terminal according to the component carrier that is of interest to the terminal includes: enabling, for the terminal, a component carrier that is interested in the terminal, or keeping a component carrier that is interested in the terminal to be in an open state .

The step of scheduling the terminal according to the component carrier that is of interest to the terminal, the scheduling manner includes: configuring, by the network side device, a component carrier that is interested in the terminal as a primary cell of the terminal; or, the network The side device configures the component carrier of the terminal to be the secondary cell of the terminal; or the network side device reconfigures the component carrier of the terminal to be the secondary cell of the terminal and closes the terminal Or one or more secondary cells; or, when the component carrier of interest of the terminal has been configured as the secondary cell of the terminal, the network side device sets the secondary cell corresponding to the component carrier that is interested in the terminal Always remain on.

In order to solve the above technical problem, the present invention further provides a system for implementing service reception under carrier aggregation, including a terminal and a network side device; the terminal is configured to determine receiving information of a multimedia broadcast multicast service (MBMS) and/or The component carrier information is reported to the network side device, and the network side device is configured to: determine, according to the received information and/or component carrier information of the MBMS service determined by the terminal, a component carrier that is interested in the terminal, and The terminal is scheduled according to the component carrier that is interested in the terminal, so that the terminal receives the MBMS service or the unicast service.

The component carrier information determined by the terminal refers to the component carrier information of the MBMS service that the terminal is receiving and/or about to receive; or the component carrier information determined by the terminal refers to the component of the MBMS service that the terminal has stopped receiving. Or the information of the carrier; or the component carrier information determined by the terminal refers to the information that the terminal obtains the component carrier whose channel quality meets the terminal reception requirement; or the component carrier information determined by the terminal is determined by the terminal according to the receiving capability of the terminal. The information of the component carrier within the range of the radio frequency receiving capability. The network side device is configured to schedule the terminal by: opening a component carrier that is interested in the terminal for the terminal, or keeping a component carrier that is interested in the terminal to be in an open state.

The network side device is configured to schedule the terminal by: configuring a component carrier that is interested in the terminal to be a primary cell of the terminal; or configuring a component carrier that is interested in the terminal as the a secondary cell of the terminal; or reconfiguring a component carrier of the terminal to be a secondary cell of the terminal and shutting down one or more secondary cells of the terminal; or, when the component carrier of the terminal is already interested When configured as the secondary cell of the terminal, the secondary cell corresponding to the component carrier that is interested in the terminal is always maintained in an open state.

The present invention reports the receiving information and/or the component carrier information of the MBMS service to the network side by the terminal, so that the network side can know the receiving of the MBMS service of the terminal or the component carrier of interest in time, so that the network side performs the Pcell and the Scell of the terminal. You can refer to the preceding report information when configuring and shutting down and enabling. This can effectively prevent the terminal from receiving data services due to improper processing on the network side. BRIEF abstract

FIG. 1 is a schematic diagram of a method for implementing service reception under carrier aggregation under carrier aggregation in an embodiment. Preferred embodiment of the invention

In the LTE multi-carrier system, when the network side configures the Pcell and the Scell for the terminal and the Scell is turned off and on, the network side determines which carriers are allocated according to the unicast service status of the terminal. Scell, which carrier is used as the Pcell, and the Scell of the terminal is turned on or off according to the unicast service state of the terminal. In the multi-carrier system, the network side does not know that the terminal receives the MBMS related information, and the terminal cannot consider the MBMS service. The demand, therefore, according to the requirements of the current protocol specification, can not meet the needs of the terminal to receive MBMS services.

In the present invention, a system for implementing service reception under carrier aggregation includes a terminal and a network side device. The terminal is configured to determine the received information and/or the component carrier information of the multimedia broadcast multicast service (MBMS), and reports the information to the network side device. The network side device is configured to: determine, according to the received information and/or component carrier information of the MBMS service of the terminal, a component carrier that is interested in the terminal, and schedule, according to the component carrier that is interested in the terminal, a terminal, to enable the terminal to receive an MBMS service or a unicast service.

The component carrier information determined by the terminal refers to the component carrier information of the MBMS service that the terminal is receiving and/or about to receive; or the component carrier information determined by the terminal refers to the component of the MBMS service that the terminal has stopped receiving. Or the information of the carrier; or the component carrier information determined by the terminal refers to the information that the terminal obtains the component carrier whose channel quality meets the terminal reception requirement; or the component carrier information determined by the terminal is determined by the terminal according to the receiving capability of the terminal. The information of the component carrier within the range of the radio frequency receiving capability.

The step of the network side device scheduling the terminal includes: opening a component carrier that is interested in the terminal for the terminal, or keeping a component carrier that is interested in the terminal to be in an open state.

The manner in which the network side device schedules the terminal according to the component carrier that is of interest to the terminal includes: configuring the component carrier to be the primary cell of the terminal; or configuring the component carrier as the secondary cell of the terminal; or Reconfiguring the component carrier as a secondary cell of the terminal and turning off one or more secondary cells of the terminal; or, turning off the service of the component carrier to the terminal; or, when the component carrier is When the secondary cell of the terminal is configured, the secondary cell corresponding to the component carrier is always maintained in an open state.

As shown in FIG. 1 , the method for implementing service reception under carrier aggregation includes: determining, by the terminal, the received information and/or the component carrier information of the multimedia broadcast multicast service (MBMS), and reporting the information to the network side device, where the network side device is configured according to Receiving the received information and/or component carrier information of the MBMS service of the terminal to determine a component carrier of interest to the terminal, and scheduling the terminal according to a component carrier of interest to the terminal, so that the terminal can receive MBMS service or unicast service. The terminal can simultaneously report the received information and the component carrier information of the MBMS service, or separately report the received information of the MBMS service, or separately report the component carrier information.

The receiving information of the MBMS service determined by the terminal refers to the information of the MBMS service that the terminal is receiving and/or about to receive and is interested in; or the receiving information of the MBMS service determined by the terminal refers to the MBMS service that the terminal has stopped receiving. Information. The received information of the MBMS service refers to one or more of the following information: MBMS service identification information (information indicating which MBMS service is), Temporary Mobile Group Identity (TMGI) corresponding to the MBMS service, And MBMS service single frequency network area information.

The network side device can learn the component carrier that the terminal is interested in according to the received information of the MBMS service reported by the terminal. The network side device determines, according to the received information of the MBMS service reported by the terminal, a component carrier that is interested in the terminal. For example, the component carrier where the multimedia broadcast multicast service corresponding to the received information sent by the terminal is located by the network side is interested in the terminal. Component carrier) and configure the component carrier for the terminal.

The terminal can also report only component carrier information. The terminal can report information of one or more component carriers of interest at a time.

The component carrier information directly reported by the terminal refers to the component carrier of interest. In a general cell, there are multiple component carriers, and the terminal can select the component carrier of interest. When the terminal determines the component carrier of interest, it can be determined by whether to receive the MBMS service on the component carrier, or can also be used by the terminal. The measurement of the channel quality of the component carrier determines that the channel quality is good as the component carrier of interest of the terminal, or the terminal determines that the component carrier information refers to the component carrier within the range of the radio frequency receiving capability determined by the terminal according to the receiving capability of the terminal, or The terminal can reside in the component carrier and receive a paging message therefrom. The component carrier information determined by the terminal refers to the component carrier information of the MBMS service that the terminal is receiving and/or about to receive; or the component carrier information determined by the terminal refers to the component of the MBMS service that the terminal has stopped receiving. Or the information of the carrier; or the component carrier information determined by the terminal refers to the component carrier information that the terminal obtains the channel quality to meet the terminal reception requirement; or the component carrier information determined by the terminal is determined by the terminal according to the receiving capability of the terminal. Component carrier within the range of RF receive capability.

In the case of directly reporting component carrier information, since the network side does not know whether the terminal is receiving traffic on the component carrier, or only considers the component by channel quality measurement. The channel quality of the carrier is relatively good, but the service is not actually received on the component carrier. Therefore, in the case that the terminal directly reports the component carrier information, the present invention needs to further restrict, so that the processing method of reporting the component carrier information is more reasonable. When the terminal reports the component carrier, the component carrier information refers to the information of the component carrier that the terminal desires to camp or is in the working state, and/or the information of the component carrier that the terminal expects to receive the paging message, so that the network side can directly know the information. Whether the terminal has a requirement for service reception or transmission on the component carrier, thereby determining whether to keep the component carrier open for the terminal.

Determining, by the network side device, the component carrier that is interested in the terminal according to the received information and/or component carrier information of the MBMS service of the terminal, and scheduling the terminal according to the component carrier that is interested in the terminal, To receive MBMS services or unicast services. Specifically, the method includes: enabling, for the terminal, the component carrier reported by the terminal, or maintaining the component carrier reported by the terminal to be in an open state. The manner in which the network side device schedules the terminal according to the component carrier that is interested in the terminal includes: the network side device configuring the component carrier to be the primary cell of the terminal; or the network side device The component carrier is configured as a secondary cell of the terminal; or the network side device reconfigures the component carrier to be a secondary cell of the terminal and closes one or more secondary cells of the terminal; or the network The side device turns off the service of the component carrier to the terminal; or, when the component carrier is configured as the secondary cell of the terminal, the network side device sets the secondary cell corresponding to the component carrier to remain open at all times. .

In the prior art, if the network side device does not know which component carriers are receiving data on the terminal, the component carrier is directly configured, including configuring which component carrier is the Pcell of the terminal, and configuring which component carriers are configured. It is Scell, and which Scells need to be turned on or off, which makes the configuration of component carriers unreasonable. After the invention is used, the related feedback of the terminal enables the network side to more fully understand the service reception requirement of the terminal, so that the configuration of the component carrier is more reasonable and effective.

The invention is described in detail below by way of examples.

Specific embodiment It is assumed that a cell constituting a certain MBSFN area has multiple carriers, and the cell is participating in MBMS service transmission in the MBSFN area with a certain component carrier. It is assumed that the cell has three component carriers, which are labeled CC1, CC2 and CC3, respectively, and the cell is using CC2 to participate in MBMS service transmission in the MBSFN area. It is further assumed that one of the terminals (referred to as UE1) in the cell is receiving the MBMS service on the CC2, and according to the prior art, the network side configures the Pcell and the Scell for the UE1, and the network side configures the CC1 as the UE1. Pcell, CC2 is its Scell. It is assumed that the network side starts its Scell for UE1, and UE1 is receiving MBMS service on CC2, but UE1 has no unicast service, that is, UE1 is in an idle state.

In the above scenario, UE1 is receiving MBMS service on its Scell, but the network side does not know that UE1 is receiving MBMS service on its Scell. According to the prior art, the network side considers that the UE1 has no service, and mainly refers to the unicast service. Therefore, the network side closes the Scell of the UE1. According to the prior art, the terminal cannot receive the broadcast system information and the PDCCH in its Scell. This will cause UE1 not to receive MBMS services in its Scell.

According to the present invention, UE1 is receiving the MBMS service on its Scell, and UE1 needs to report the receiving information of the MBMS service that it is receiving for the network side. After receiving the receiving information of the MBMS service reported by the terminal, the network side receives the received information according to the received The information is judged, and it can be known that the MBMS service is being sent on the CC2. At this time, the CC2 is the Scell of the UE1, and the network side can keep the Scell of the UE1 in the on state, so that the UE1 can normally receive the MBMS service on the CC2 carrier. In another way, the UE1 can directly report the component carrier information to the network side. For example, the UE1 directly directly accesses the information of the CC2 it is interested in, and the network side can also know that the UE1 is receiving traffic on the CC2, so the network side can maintain the CC2. It is on for UE1.

In the above scenario, further, one UE2 is also in the above-mentioned cell, and the Pcell configured for the UE2 on the network side is CC3, and the Scell is CC1 and CC2. It is assumed that the UE2 has been closed because the UE2 has no unicast service. The Scell, that is, the Scell of the UE2 on the CC1 and the CC2 is closed, so that if the UE2 wants to receive the MBMS service on the CC2, the UE2 cannot receive the UE2 because the UE2 cannot receive the broadcast system information and the PDCCH on the CC2. Obtaining the location of the Multicast Control Channel (MCCH) of the MBMS service in the broadcast system information, so that the MBMS service cannot be received. However, UE2 can obtain information about certain MBMS services through the electronic program menu of the MBMS service, thereby determining for certain MBMS services.

9 181102965 Interestingly, these MBMS services are being transmitted on the CC2 component carrier, but UE2 is unable to receive it. According to the present invention, UE2 reports the received information of the MBMS service to be received to the network side, or reports the component carrier information of interest. When the network side receives the information reported by UE2, and finally determines that UE2 is interested in the CC2 component carrier, then the network The CC2 can be enabled for the UE2, and the CC2 can be configured as the Pcell of the UE2. The Pcell is always enabled, or the CC2 is configured as the Scell of the UE2, and the Scell is enabled for the Scell. In this way, the UE2 reports the component carrier information, and the network side turns on the CC2 for the UE2, so that the UE2 can receive the MBMS service on the CC2.

It should be noted that the features in the embodiments and the embodiments of the present application may be arbitrarily combined with each other without conflict.

It is a matter of course that the invention may be embodied in various other forms and modifications without departing from the spirit and scope of the invention.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program instructing the associated hardware, such as a read-only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.

Industrial applicability

Compared with the prior art, the present invention reports the receiving information and/or component carrier information of the MBMS service to the network side through the terminal, so that the network side can know the receiving of the MBMS service of the terminal or the component carrier of interest in time, thereby performing the terminal. The configuration of the Pcell and the Scell and the closing and opening can refer to the foregoing reporting information, which can effectively prevent the terminal from being unable to receive data services due to improper processing on the network side.

Claims

Claim

A method for implementing service reception under carrier aggregation, comprising:

The terminal determines the received information and/or the component carrier information of the multimedia broadcast multicast service (MBMS), and reports the information to the network side device, and the network side device receives the received information and/or component of the MBMS service determined by the terminal according to the received terminal. The carrier information determines a component carrier that is interested in the terminal, and schedules the terminal according to the component carrier that is interested in the terminal, so that the terminal receives the MBMS service or the unicast service.

2. The method of claim 1 wherein

3. The method of claim 2, wherein

4. The method of claim 1, wherein

5. The method of claim 4, wherein

6. The method of claim 1, wherein

The step of scheduling the terminal according to the component carrier of interest of the terminal includes: The network side device starts, for the terminal, a component carrier that is interested in the terminal, or keeps a component carrier that is interested in the terminal in an open state.

The method according to any one of claims 1 to 5, wherein, in the step of scheduling the terminal according to a component carrier of interest to the terminal,

The scheduling mode includes: the network side device configuring the component carrier that is interested in the terminal to be the primary cell of the terminal; or the network side device configuring the component carrier that is interested in the terminal as the secondary cell of the terminal Or the network side device reconfigures the component carrier that is interested in the terminal as the secondary cell of the terminal and turns off one or more secondary cells of the terminal; or, when the terminal is interested in the component When the carrier has been configured as the secondary cell of the terminal, the network side device sets the secondary cell corresponding to the component carrier that is interested in the terminal to maintain the on state.

8. A system for implementing service reception under carrier aggregation, comprising a terminal and a network side device, wherein

The terminal is configured to determine the received information and/or the component carrier information of the multimedia broadcast multicast service (MBMS), and report the information to the network side device;

The network side device is configured to: determine, according to the received information and/or component carrier information of the MBMS service determined by the terminal, a component carrier that is interested in the terminal, and according to a component carrier that is interested in the terminal The terminal performs scheduling to enable the terminal to receive an MBMS service or a unicast service.

9. The system of claim 8 wherein

10. The system of claim 8 wherein

The component carrier information determined by the terminal refers to the component carrier information of the MBMS service that the terminal is receiving and/or about to receive; or the component carrier information determined by the terminal refers to the component of the MBMS service that the terminal has stopped receiving. Or the information of the carrier; or the component carrier information determined by the terminal refers to the information that the terminal obtains the component carrier whose channel quality meets the terminal reception requirement by using the measurement; or the component carrier information determined by the terminal refers to the terminal receiving the packet according to the self. The ability to determine the component carrier information within the range of RF receive capabilities.

11. The system of claim 8 wherein

The network side device is configured to schedule the terminal by: opening a component carrier that is interested in the terminal for the terminal, or keeping a component carrier that is interested in the terminal to be in an open state.

12. The system of claim 8 wherein