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CN112469142A - Channel establishment method, base station and multi-cell Multicast Coordination Entity (MCE) - Google Patents

Channel establishment method, base station and multi-cell Multicast Coordination Entity (MCE) Download PDF

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Publication number
CN112469142A
CN112469142A CN201910849529.3A CN201910849529A CN112469142A CN 112469142 A CN112469142 A CN 112469142A CN 201910849529 A CN201910849529 A CN 201910849529A CN 112469142 A CN112469142 A CN 112469142A
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point
mbms
channel
base station
pdu session
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王弘
许丽香
汪巍崴
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Beijing Samsung Telecommunications Technology Research Co Ltd
Samsung Electronics Co Ltd
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Priority to CN201910849529.3A priority Critical patent/CN112469142A/en
Priority to US17/640,955 priority patent/US12349166B2/en
Priority to PCT/KR2020/012169 priority patent/WO2021049871A1/en
Publication of CN112469142A publication Critical patent/CN112469142A/en
Priority to US18/999,325 priority patent/US20250133579A1/en
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/40Connection management for selective distribution or broadcast
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/11Allocation or use of connection identifiers
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/12Setup of transport tunnels
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/10Connection setup
    • H04W76/14Direct-mode setup
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W76/00Connection management
    • H04W76/30Connection release
    • H04W76/32Release of transport tunnels

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请实施例提供了一种信道建立的方法、基站及多小区多播协调实体MCE,该方法应用于基站,包括:接收多小区多播协调实体MCE发送的点对点建立请求,点对点建立请求用于指示为多媒体广播组播业务MBMS的传输建立点对点信道,点对点建立请求包括MBMS的业务标识、协议数据单元会话PDU Session的标识中的至少一项;根据点对点建立请求,发送承载建立请求给核心网;用于确定点对点信道建立成功,及点对多点信道转换为点对点信道;本申请所提供的方法实现了将点对多点信道建立为点对点信道。

Figure 201910849529

Embodiments of the present application provide a channel establishment method, a base station, and a multi-cell multicast coordination entity MCE. The method is applied to a base station and includes: receiving a point-to-point establishment request sent by the multi-cell multicast coordination entity MCE, and the point-to-point establishment request is used for Instructing to establish a point-to-point channel for the transmission of the multimedia broadcast multicast service MBMS, the point-to-point establishment request includes at least one of the service identifier of the MBMS and the identifier of the protocol data unit session PDU Session; according to the point-to-point establishment request, send the bearer establishment request to the core network; It is used to determine that the point-to-point channel is established successfully, and the point-to-multipoint channel is converted into a point-to-point channel; the method provided in this application realizes the establishment of a point-to-multipoint channel into a point-to-point channel.

Figure 201910849529

Description

Channel establishment method, base station and multi-cell Multicast Coordination Entity (MCE)
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a channel establishment method, a base station, and a multi-cell multicast coordination entity MCE.
Background
Modern mobile communications are increasingly tending to provide users with high-rate multimedia services, as shown in fig. 1, which is a system architecture diagram of a radio access network (hereinafter referred to as NG-RAN) under 5G (Fifth Generation mobile communication technology). Wherein:
the NG-RAN comprises a set of base stations gNB (or enhanced enbs) connected via an NG interface to a core network 5GC of 5G. The base station may support FDD (frequency division) mode, TDD (time division) mode. The gNB can be connected through an Xn interface. A base station gNB may comprise a central control node (hereinafter CU) and one or more distribution nodes (hereinafter DU). The CU and the DU are connected through an F1 interface. A DU can currently be connected to only one CU. The CU may be further separated into a central control plane (hereinafter CU-CP) and a central user plane (hereinafter CU-UP). The CU-UP has a data adaptation layer (hereinafter referred to as SDAP), a data aggregation (hereinafter referred to as PDCP), the CU-CP has a radio connection control (hereinafter referred to as RRC), the DU has a link control (hereinafter referred to as RLC), a medium access layer (hereinafter referred to as MAC), and a physical layer.
In order to efficiently utilize air interface resources, a service in which a plurality of receiving users receive the same data is provided to the users in a broadcast and multicast manner. Such a Service is called a Multimedia Broadcast Multicast Service (MBMS, hereinafter). Fig. 2 is an architecture diagram of an MBMS in LTE (Long Term Evolution), which includes a core network and an access network, where the core network includes an MBMS core network, an MME (Mobility Management Entity) and an MBMS-GW (Multimedia Broadcast Multicast service gateway), and the access network includes an MBMS central control node MCE (Multi-cell/Multicast Coordination Entity) and a base station. Each MBMS bearer provides services in its own service area, and in each cell of the service area, there is a dedicated Control Channel (MCCH, Multicast Control Channel) to transmit MBMS signaling. MBMS data is sent from the BM-SC (Broadcast-Multicast Service center) to the MBMS-GW, which is a logical node, not excluding other network nodes, and is located between the BM-SC and the enbs, responsible for sending/broadcasting MBMS packets to each eNB that wants to transmit data. The MBMS-GW sends the data packet to the corresponding eNB, and the eNB sends the data to the user. Control signaling is sent from the BM-SC to the MBMS-GW and then to EUTRAN via the MME. The MCE is an associated node of EUTRAN, receives MBMS signaling, determines to use an MBSFN (Multicast Broadcast Single Frequency Network) transmission mode, and then sends the signaling to a corresponding eNB. In the prior art, a continuous area is defined, in which each eNB uses the same carrier to synchronously transmit the same MBMS signal, so as to improve the MBMS service reception quality of users. This contiguous area is called a Single Frequency Network (SFN) area. The SFN area includes a group of geographically continuous cells that use the same radio resources for the simultaneous transmission of a particular MBMS service.
The MBSFN transmission mode is suitable for broadcast multicast services with a large number of users and wide user distribution, the general MBSFN area covers the range of a plurality of base stations, the same resource needs to be allocated under the plurality of base stations, and the resource is configured by MCE and sent to the base stations through an M2 interface. The former base stations are all a collective base station, the functional entities of the base stations are all on one physical entity, the base stations can be separated architectures, and the functional entities of the base stations can be distributed on different physical entities. Under a separate architecture, how to provide multicast services has not been previously addressed.
Disclosure of Invention
Aiming at the defects of the existing mode, the application provides a channel establishment method, a base station and a multi-cell multicast coordination entity MCE.
In a first aspect, a method for channel establishment is provided, which is applied to a base station, and includes:
receiving a point-to-point establishment request sent by a multi-cell multicast coordination entity MCE, wherein the point-to-point establishment request is used for indicating the establishment of a point-to-point channel for the transmission of a multimedia broadcast multicast service MBMS, and the point-to-point establishment request comprises at least one of a service identifier of the MBMS and an identifier of a protocol data unit Session PDU Session;
and sending a bearing establishment request to the core network according to the point-to-point establishment request.
In a second aspect, a method for establishing a channel is provided, which is applied to an MCE, and includes:
receiving MBMS statistical report sent by a base station, wherein the MBMS statistical report comprises the number of UE receiving MBMS in a cell of the base station;
and sending a point-to-point establishment request to the base station according to the MBMS statistical report, wherein the point-to-point establishment request is used for indicating the establishment of a point-to-point channel and converting the point-to-multipoint channel into the point-to-point channel, and the point-to-point establishment request comprises at least one of a service identifier of the MBMS and an identifier of the PDU Session.
In a third aspect, a method for establishing a channel is provided, which is applied to a base station, and includes:
sending MBMS statistics report to a multi-cell multicast coordination entity MCE;
receiving scheduling information sent by MCE, wherein the scheduling information comprises a service identifier and a transmission mode of MBMS;
sending scheduling information to the UE;
and receiving a request message for establishing the point-to-point channel sent by the UE.
In a fourth aspect, a channel establishing method is provided, which is applied to a base station, and includes:
receiving a PDU Session establishment request sent by a core network, wherein the PDU Session establishment request is used for requesting a base station to establish a point-to-point channel, and the point-to-point channel comprises a point-to-point UE dedicated channel;
sending an RRC reconfiguration request to the UE according to the PDU Session establishment request, wherein the RRC reconfiguration request is used for establishing a point-to-point UE dedicated channel;
receiving an RRC reconfiguration response sent by the UE;
sending a PDU Session establishment response message to a core network for confirming that the establishment of the point-to-point UE dedicated channel is successful;
determining the number of the UE receiving the MBMS, and sending MBMS statistical report to the MCE according to the number of the UE receiving the MBMS, wherein the MBMS statistical report comprises the number of the UE receiving the MBMS in a cell of a base station;
receiving scheduling information sent by the MCE;
sending scheduling information to the UE;
and initiating a PDU Session release request to the core network according to the scheduling information, wherein the PDU Session release request is used for releasing the point-to-point channel.
In a fifth aspect, a method for establishing a channel is provided, which is applied to an MCE, and includes:
receiving MBMS statistical report sent by a base station;
according to the MBMS statistical report, sending a service start request to a core network, and requesting the core network to transmit the MBMS data to a base station through a point-to-multipoint channel;
receiving a service recovery request sent by a core network, and transmitting MBMS data to a base station through a point-to-multipoint channel by the core network;
and sending scheduling information to the base station, wherein the scheduling information is used for releasing the point-to-point channel by the base station and converting the point-to-point channel into a point-to-multipoint channel.
In a sixth aspect, there is provided a base station comprising:
the system comprises a first processing module, a second processing module and a third processing module, wherein the first processing module is used for receiving a point-to-point establishment request sent by a multi-cell multicast coordination entity MCE, the point-to-point establishment request is used for indicating the establishment of a point-to-point channel for the transmission of a multimedia broadcast multicast service MBMS, and the point-to-point establishment request comprises at least one of a service identifier of the MBMS and an identifier of a protocol data unit Session PDU Session;
and the second processing module is used for sending the bearing establishment request to the core network according to the point-to-point establishment request.
In a seventh aspect, there is provided an MCE comprising:
a third processing module, configured to receive an MBMS statistics report sent by the base station, where the MBMS statistics report includes the number of UEs that receive an MBMS in a cell of the base station;
and the fourth processing module is configured to send a point-to-point establishment request to the base station according to the MBMS statistics report, where the point-to-point establishment request is used to instruct establishment of a point-to-point channel and convert a point-to-multipoint channel into a point-to-point channel, and the point-to-point establishment request includes at least one of a service identifier of the MBMS and an identifier of a PDU Session.
In an eighth aspect, there is provided a base station comprising:
a fifth processing module, configured to send an MBMS statistics report to a multi-cell multicast coordination entity MCE;
a sixth processing module, configured to receive scheduling information sent by the MCE, where the scheduling information includes a service identifier and a transmission mode of an MBMS;
a seventh processing module, configured to send the scheduling information to the UE;
an eighth processing module, configured to receive a request message for establishing a point-to-point channel sent by the UE.
In a ninth aspect, there is provided a base station comprising:
an eleventh processing module, configured to receive a PDU Session establishment request sent by a core network, where the PDU Session establishment request is used to request a base station to establish a point-to-point channel, and the point-to-point channel includes a point-to-point UE dedicated channel;
a twelfth processing module, configured to send an RRC reconfiguration request to the UE according to the PDU Session establishment request, and configured to establish a point-to-point UE dedicated channel;
a thirteenth processing module, configured to receive an RRC reconfiguration response sent by the UE;
a fourteenth processing module, configured to send a PDU Session establishment response message to the core network, and configured to confirm that the peer-to-peer UE dedicated channel is successfully established;
a fifteenth processing module, configured to determine the number of UEs that receive the MBMS, and send an MBMS statistics report to the MCE according to the number of UEs that receive the MBMS, where the MBMS statistics report includes the number of UEs that receive the MBMS in the cell of the base station;
a sixteenth processing module, configured to receive scheduling information sent by the MCE;
a seventeenth processing module, configured to send scheduling information to the UE;
and the eighteenth processing module is configured to initiate a PDU Session release request to the core network according to the scheduling information, and is configured to release the point-to-point channel.
In a tenth aspect, there is provided an MCE comprising:
a nineteenth processing module, configured to receive an MBMS statistics report sent by a base station;
a twentieth processing module, configured to send a service start request to the core network according to the MBMS statistics report, and configured to request the core network to transmit the MBMS data to the base station through the point-to-multipoint channel;
a twenty-first processing module, configured to receive a service recovery request sent by a core network, and determine that the core network transmits MBMS data to the base station through a point-to-multipoint channel;
and the twenty-second processing module is used for sending scheduling information to the base station, releasing the point-to-point channel by the base station and converting the point-to-point channel into a point-to-multipoint channel.
The technical scheme provided by the embodiment of the application at least has the following beneficial effects:
receiving a point-to-point establishment request sent by a multi-cell multicast coordination entity MCE, wherein the point-to-point establishment request is used for indicating the establishment of a point-to-point channel for the transmission of a multimedia broadcast multicast service MBMS, and the point-to-point establishment request comprises at least one of a service identifier of the MBMS and an identifier of a protocol data unit Session PDU Session; according to the point-to-point establishment request, sending a bearing establishment request to a core network, wherein the bearing establishment request is used for determining that the point-to-point channel is successfully established and converting the point-to-multipoint channel into a point-to-point channel; successfully establishing the MBMS bearer, reducing the data of signaling, reducing the number of interfaces, reducing the delay of data transmission and effectively transmitting the multimedia broadcast multicast service.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments of the present application will be briefly described below.
FIG. 1 is a prior art 5G system architecture diagram;
fig. 2 is a diagram of an LTE MBMS architecture;
FIG. 3 is a diagram of a network architecture provided by an embodiment of the present application;
fig. 4 is a flowchart illustrating a method for channel establishment according to an embodiment of the present application;
fig. 5 is a flowchart illustrating another channel establishment method according to an embodiment of the present application;
fig. 6 is a flowchart illustrating another channel establishment method according to an embodiment of the present application;
fig. 7 is a flowchart illustrating another channel establishment method according to an embodiment of the present application;
fig. 8 is a flowchart illustrating another channel establishment method according to an embodiment of the present application;
fig. 9 is a schematic diagram of a multi-point to single-point transmission conversion according to an embodiment of the present application;
fig. 10 is a schematic diagram of a multi-point to single-point transmission conversion provided by an embodiment of the present application;
fig. 11 is a schematic diagram of unicast to multicast conversion according to an embodiment of the present disclosure;
fig. 12 is a schematic structural diagram of a base station according to an embodiment of the present application;
fig. 13 is a schematic structural diagram of an MCE according to an embodiment of the present disclosure;
fig. 14 is a schematic structural diagram of another base station according to an embodiment of the present application;
fig. 15 is a schematic structural diagram of another base station according to an embodiment of the present application;
fig. 16 is a schematic structural diagram of another MCE provided in the embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
To make the objects, technical solutions and advantages of the present application more clear, embodiments of the present application will be described in further detail below with reference to the accompanying drawings.
As shown in fig. 3, the access network comprises a central control node control plane CU-CP, a central control node user plane CU-UP, a distribution unit DU. Wherein the CU-CP and the CU-UP may be on one entity, which is a central control node CU. Optionally, the DU supports an IP multicast function, and may send an IGMP join message to the core network to join the multicast network, and the core network directly sends the MBMS data to the DU. Optionally, the CU-UP or the CU supports an IP multicast function, and may send an IGMP join message to the core network, where the core network directly sends the MBMS data to the CU-UP or the CU. The access network also comprises a node MCE for MBMS centralized control. The MCE is a central control node of the MBMS, and the MCE determines a data transmission mode, for example, whether data is transmitted by using an MBSFN (MBMS single frequency network) mode or a multi-cell multicast mode. The MBSFN transmission mode is that in an SFN area, all cells are in the same frequency and are synchronized, and all cells in the SFN area use the same air interface resource to transmit the same MBMS data at the same time, and may also use other names at 5G. This MCE may be a single physical node, the interface between the MCE and the CU-CP, which we refer to as the M2 interface herein. The interface between CU-CP and DU needs to be enhanced on the current basis to support the transmission of MBMS services. The MCE may also be placed on the CU-CP. When the MCE is placed on the CU-CP, the interface between the CU-CP and the DU can be an enhancement of the F1 interface or the M2 interface. Hereinafter, the transmission by the MBSFN scheme, the transmission by the broadcast scheme in a single cell, is referred to as point-to-multipoint transmission. The manner of transmission over the UE dedicated channel is referred to as point-to-point transmission.
Example one
The embodiment of the present application provides a method for establishing a channel, which is applied to a base station, and a flow diagram of the method is shown in fig. 4, where the method includes:
step S101, receiving a point-to-point establishment request sent by a multi-cell multicast coordination entity MCE, wherein the point-to-point establishment request is used for indicating the establishment of a point-to-point channel for the transmission of a multimedia broadcast multicast service MBMS, and the point-to-point establishment request comprises at least one of a service identifier of the MBMS and an identifier of a protocol data unit session PDSUSessions.
Step S102, according to the point-to-point establishment request, sending a load establishment request to a core network.
In the embodiment of the application, a point-to-point establishment request sent by a multi-cell multicast coordination entity MCE is received, the point-to-point establishment request is used for indicating the establishment of a point-to-point channel for the transmission of a multimedia broadcast multicast service MBMS, and the point-to-point establishment request comprises at least one of a service identifier of the MBMS and an identifier of a protocol data unit Session PDU Session; sending a load building request to a core network according to the point-to-point building request; the device is used for determining that the point-to-point channel is successfully established and converting the point-to-multipoint channel into the point-to-point channel; in this way, a conversion of point-to-multipoint channels to point-to-point channels is achieved.
Optionally, before receiving the point-to-point establishment request sent by the MCE, the method further includes:
receiving an MBMS counting request sent by MCE, wherein the MBMS counting request comprises at least one of the updating time of a multicast control channel MCCH, the identification of a single frequency network SFN area and the service identification of the MBMS to be counted;
sending MBMS counting response to the MCE, and confirming that the base station has received the MBMS counting request sent by the MCE;
transmitting an MBMS counting request to the UE;
receiving MBMS counting response sent by UE, which is used for confirming that the UE has received the MBMS counting request sent by the base station;
and sending MBMS statistics report to the MCE, wherein the MBMS statistics report comprises the number of the UE receiving the MBMS in the cell of the base station.
Optionally, after sending the bearer establishment request to the core network, the method further includes:
receiving a PDU Session establishment request sent by a core network, wherein the PDU Session establishment request comprises at least one of a service identifier of MBMS and a PDU Session identifier ID, and the service identifier of MBMS or the PDU Session identifier is used for converting point-to-multipoint transmission of MBMS load into point-to-point transmission and establishing a point-to-point channel.
Optionally, the method for sending the bearer establishment request to the core network includes at least one of the following:
when the UE is in a connection mode, sending a bearing establishment request to a core network through an established signaling bearing between the UE and the core network;
when the UE is in an idle mode, the base station establishes RRC connection with the UE, and the base station sends a bearer establishment request to a core network;
when the UE is in an idle mode, the UE sends an MBMS control signaling, the MBMS control signaling is used for indicating that RRC connection is established between the base station and the UE, and the base station sends a bearing establishment request to a core network.
Another method for establishing a channel is provided in this embodiment, and is applied to an MCE, where a flow diagram of the method is shown in fig. 5, and the method includes:
step S201, receiving an MBMS statistics report sent by a base station, where the MBMS statistics report includes the number of UEs receiving an MBMS in a cell of the base station.
Step S202, according to MBMS statistical report, sending point-to-point establishment request to base station, where the point-to-point establishment request is used to instruct to establish point-to-point channel and convert point-to-multipoint channel into point-to-point channel, and the point-to-point establishment request includes at least one of MBMS service identifier and PDU Session identifier.
In the embodiment of the application, the point-to-multipoint channel is converted into the point-to-point channel.
Optionally, after sending the point-to-point establishment request to the base station, the method further includes:
receiving an MBMS suspension request sent by a core network;
and updating the message on the MBMS control channel according to the MBMS suspension request, and sending a service suspension message to the UE.
Optionally, the service identifier of the MBMS includes at least one of a temporary mobile group identifier TMGI and first indication information, where the first indication information indicates an MBMS bearer mode after the MCE performs UE number statistics, and the MBMS bearer mode includes at least one of a point-to-point channel, a point-to-multipoint channel, a multimedia broadcast multicast service single frequency network MBSFN mode, and a single cell mode.
Optionally, an MBMS control message is sent to the UE, where the MBMS control message includes a service identifier of the MBMS and second indication information of the peer-to-peer channel, and the MBMS control message is used for the UE to initiate establishment of the peer-to-peer channel, and for the UE to store a correspondence between the PDU Session identifier and the service identifier of the MBMS.
Another method for establishing a channel is provided in this embodiment, and is applied to a base station, and a flowchart of the method is shown in fig. 6, where the method includes:
step S301, sending MBMS statistics report to a multi-cell multicast coordination entity MCE;
step S302, receiving scheduling information sent by MCE, wherein the scheduling information comprises a service identifier and a transmission mode of MBMS;
step S303, sending scheduling information to the UE;
step S304, receiving a request message for establishing the point-to-point channel sent by the UE.
In the embodiment of the application, the point-to-multipoint channel is converted into the point-to-point channel.
Another method for establishing a channel is provided in this embodiment, and is applied to a base station, and a flowchart of the method is shown in fig. 7, where the method includes:
step S401, receiving a PDU Session establishment request sent by a core network, where the PDU Session establishment request is used to request a base station to establish a point-to-point channel, and the point-to-point channel includes a point-to-point UE dedicated channel.
Step S402, according to the PDU Session establishment request, sending RRC reconfiguration request to UE for establishing point-to-point UE dedicated channel.
Step S403, receiving an RRC reconfiguration response sent by the UE.
Step S404, sending a PDU Session establishment response message to the core network for confirming the success of the establishment of the point-to-point UE dedicated channel.
Step S405, determining the number of the UE receiving the MBMS, and sending MBMS statistics report to the MCE according to the number of the UE receiving the MBMS, wherein the MBMS statistics report comprises the number of the UE receiving the MBMS in the cell of the base station.
Step S406, receiving the scheduling information sent by the MCE.
Step S407, sending scheduling information to the UE.
Step S408, according to the scheduling information, initiating a PDU Session release request to the core network for releasing the point-to-point channel.
Optionally, the determining the number of UEs receiving the MBMS includes at least one of:
the PDU Session establishment request comprises a PDU Session identification and an MBMS service identification, the number of the UE receiving the MBMS is determined according to the corresponding relation between the PDU Session identification and the MBMS service identification, the MBMS service identification comprises TMGI, wherein all point-to-point UE dedicated channels corresponding to one MBMS use the same PDU Session identification;
receiving a message which is sent by MCE and comprises a PDU Session identification and an MBMS service identification, and determining the number of the UE receiving the MBMS according to the corresponding relation between the PDU Session identification and the MBMS service identification, wherein all point-to-point UE dedicated channels corresponding to one MBMS use the same PDU Session identification;
and determining the number of the UE receiving the MBMS according to the corresponding relation between the PDU Session identification and the MBMS service identification, wherein the operation maintenance management OAM is configured on the base station in advance, and all the point-to-point UE dedicated channels corresponding to one MBMS use the same PDSUSsion identification.
In the embodiment of the application, the point-to-point channel is converted into the point-to-multipoint channel.
Another method for establishing a channel is provided in this embodiment, and is applied to an MCE, where a flow diagram of the method is shown in fig. 8, and the method includes:
step S501, receiving MBMS statistical report sent by a base station;
step S502, according to the MBMS statistical report, sending a service start request to the core network, for requesting the core network to transmit the MBMS data to the base station through the point-to-multipoint channel.
Step S503, receiving a service recovery request sent by the core network, configured to determine that the core network transmits MBMS data to the base station through the point-to-multipoint channel.
Step S504, sending scheduling information to the base station, for the base station to release the point-to-point channel, and converting the point-to-point channel into a point-to-multipoint channel.
Optionally, determining to establish a point-to-multipoint channel according to the MBMS statistics report; and transmitting an MBMS control message to the UE for the UE to receive MBMS data from the point-to-multipoint channel.
In the embodiment of the application, the point-to-point channel is converted into the point-to-multipoint channel.
The method for establishing a channel according to the above embodiments of the present application is fully described by the following embodiments:
fig. 9 depicts the conversion of a broadcast multicast service MBMS bearer from a point-to-multipoint transmission to a point-to-point transmission. Depending on the number of users, QoS requirements, and cell resources, MBMS services may be transmitted in a point-to-multipoint transmission mode, such as MBSFN transmission, or single cell multicast, or in a point-to-point transmission mode, such as establishing a dedicated channel for the UE. If the number of users is reduced, the transmission mode of the MBMS service can be changed from point-to-multipoint transmission to point-to-point transmission, the MCE counts the number of users, determines to change the point-to-multipoint transmission to the point-to-point transmission, and sends a request to a core network to request the core network to initiate the establishment of a point-to-point channel. Specifically, as shown in fig. 9:
step 401: the MCE sends an MBMS counting request message to the base station.
Optionally, the MCE decides to initiate an MBMS counting procedure, where the counting procedure aims to determine the number of users receiving a certain MBMS service in a certain area, for example, a cell or an SFN area. The MCE sends an MBMS counting request message to the base station. The base station receiving the message can count the number of users under the base station or in a cell under the base station through the RRC message, and then the base station reports the result of the user counting to the MCE. The MCE knows the position of the UE and judges the mode of MBMS data transmission in the next period of time, wherein the mode of data transmission can be a single-cell multicast mode, a point-to-point mode of dedicated channel transmission or an MBSFN mode. According to the statistical result, the MCE may make a decision, for example, that many users are in the same or same group of cells, and a single-cell multicast transmission mode is used, which may further reduce waste of air interface resources, and at this time, may decide to use a single-cell multicast mode. If the users are scattered in several cells, it may be decided to use a point-to-point channel transmission scheme.
Optionally, the MBMS statistics request message includes a time of updating the MBMS control channel MCCH, an identifier of the SFN area, a service identifier of the MBMS to be counted, for example, TMGI (temporary mobile group identifier). The MCCH updating time indicates the time of sending a counting request at an air interface by a base station; the SFN area identification indicates an area to be counted, and if the cell on the base station data the SFN area, the base station needs to send a corresponding counting request message on an MBMS control channel of the cell; the service identification of the MBMS to be counted indicates which service user is to be counted specifically, the user receives the service identification from the MBMS control channel, and if the user is interested in the service and needs to receive the data of the service, the user needs to send an RRC counting response message to the base station.
Step 402: the base station sends MBMS counting response information to the MCE, and confirms that the base station information receives the information of the counting request sent by the MCE.
Step 403: the base station sends an MBMS statistic request to the user.
Optionally, after receiving the message in step 401, the base station sends an MBMS statistics request to the user through an MBMS control channel, where the MBMS statistics request carries an MBMS service identifier to be subjected to user statistics, for example, a TMGI, and a user in an RRC connected mode and/or an idle mode may receive the MBMS statistics request.
Step 404: the user sends the MBMS statistic response to the base station.
Alternatively, upon receiving the MBMS statistics request, the user in connected mode may directly send an RRC message (e.g., MBMS statistics response message) to the base station. The user in the idle mode needs to establish the RRC connection first and then sends the MBMS counting response message to the base station, the base station can keep the user in the connection mode, and when the base station knows that the MCE counting process is completed and does not need to establish the point-to-point channel, the base station releases the RRC connection of the user, so that the UE enters the idle mode. Or in order to accelerate the process of statistics, the existing RRC establishment process is enhanced, and the MBMS statistics is responded through the RRC establishment process, that is, the UE sends a first RRC message, namely an RRC establishment request message, where the message carries information of a statistics response, for example, an indication information indicates that the UE needs to receive a certain MBMS service being subjected to user statistics, where the indication information corresponds to an MBMS service identifier, and through the indication information, the base station can know whether the UE is receiving the certain MBMS service. And after receiving the MBMS counting response message, the base station records the UE, updates the counting result, and then sends an RRC release message to enable the UE to return to the idle mode.
Step 405: the base station sends an MBMS statistics report to the MCE.
Optionally, the base station counts the number of users receiving the MBMS service in the cell of the base station, and then sends an MBMS count report to the MCE. The message carries an identifier of the MBMS service, such as the TMGI, an identifier of the SFN area, an identifier of the cell where the UE is located, and a user statistical result, i.e. the number of users. The number of users may be the number of users of a service in an SFN area, or the number of users in a cell.
Step 406: the MCE sends a point-to-point establishment request to the base station.
Alternatively, the MCE decides the MBMS transmission mode used in the next stage according to the result of the user statistics, and then notifies the base station of the transmission mode. There are two implementations of this step:
the first method is as follows: the MCE sends a point-to-point establishment request message to indicate that a point-to-point channel needs to be established for a certain MBMS service. The message carries the service identity, e.g. TMGI, of the MBMS that needs to establish the point-to-point channel. The message may also carry an identification of the PDU Session used by the point-to-point bearer. The MCE pre-stores the MBMS service identifier and the PDU Session identifier corresponding thereto, and may be pre-configured on the MCE through OAM, or the core network sends the MBMS service start request message, which includes the MBMS service identifier and the PDU Session identifier corresponding thereto.
The second method comprises the following steps: the MCE sends a message to the base station, where the message carries a service identifier of the MBMS, such as the TMGI, and also carries indication information, where the indication information is first indication information and indicates a mode of the MBMS bearer after the MCE performs user statistics, and the mode of the bearer may be set to one of information such as a point-to-point channel, a point-to-multipoint channel, an MBSFN mode, and a single cell mode. The message may also carry an identification of the PDU Session used by the point-to-point bearer. Similarly, the MCE pre-stores the MBMS service identifier and the PDU Session identifier corresponding thereto.
Step 407: the base station sends a bearer establishment request message to the core network.
Optionally, the base station receives the message of step 406, knows that it needs to establish point-to-point information for a certain MBMS service, and the context of the MBMS service is stored in the base station, and through the previous statistical process, the base station knows and stores which users are receiving the MBMS service, so that the base station may send a user-specific bearer establishment request message to the core network for each user, where the bearer establishment request message carries a service identifier of the MBMS to establish a point-to-point channel, such as a TMGI, or an identifier of a PDU Session used by the point-to-point bearer. Depending on the mode of the UE, there are several methods:
the method comprises the following steps: if the UE is already in the connection mode, the base station can send a bearer establishment request message through an established signaling bearer with the core network.
The second method comprises the following steps: if the UE is in the idle mode, during MBMS statistics, the UE enters the RRC connected mode for statistics, and the base station may continue to maintain the UE in the connected mode after performing the user statistics process until receiving the message of step 406 indicating the user statistics result that it is known that the point-to-point channel does not need to be established for the MBMS service, and the base station releases the RRC connection of the UE. At this time, the RRC connection between the base station and the UE is already established, and the base station sends a first message to the core network, for example, initial UE message transmission, where the message carries a service identifier of the MBMS, such as TMGI, that is to establish a point-to-point channel, or a PDU Session identifier used by a point-to-point bearer.
The third method comprises the following steps: if the UE is in the idle mode, the base station needs to make the UE receiving the MBMS service enter the connected mode, at this time, the base station needs to send a control signaling of the MBMS to indicate that the UE needs to establish an RRC connection and enter the RRC connected mode, and then the processing is the same as the second method.
Step 408: the core network sends a protocol data unit Session (PDU Session) setup request message to the base station.
Optionally, the core network, for example, the AMF receives the bearer establishment request message, and the AMF forwards the message to the SMF, if the message in step 406 includes the MBMS service identifier, the AMF or the SMF obtains the correspondence between the MBMS service and the PDU Session identifier according to the preconfigured information, and the SMF sends the PDU Session establishment request message to the AMF, and the AMF sends the message to the base station, where the message includes the PDU Session identifier used by the point-to-point bearer. The process is similar to the current bearer establishment process, and the difference is that a certain node of the core network needs to store the corresponding relationship between the MBMS service and the PDU Session identifier.
Step 409: the base station sends an RRC reconfiguration request to the UE.
And the base station configures the wireless channel corresponding to the point-to-point transmission mode of the UE.
Step 410: and the UE sends an RRC reconfiguration response to the base station.
The UE configures a point-to-point channel and then transmits a response message to the base station.
Step 411: the base station sends a protocol data unit Session (PDU Session) setup response to the core network.
And the base station sends a successful response message to the core network after the channel configuration is successful.
Step 412: the MCE sends a service suspension request to the core network.
After the MCE determines to transmit the MBMS data using the point-to-point channel, the MCE may transmit a service suspension request to the core network of the MBMS, and the core network of the MBMS may suspend transmitting the data in a broadcast manner. Or, the message in step 412 may also be a request that the core network obtains a point-to-point channel sent by the base station, the core network may start sending MBMS data to the UE through the point-to-point channel, the MBMS core network may send a message that the MBMS service is temporarily stopped to the MCE, the MCE may update a message on the MBMS control channel, and send a message that the service is suspended to the UE. Or after step 406, the MCE sends scheduling information to the base station, the message includes an identifier of the suspended MBMS service, and the base station sends the scheduling information on the MBMS control channel.
Fig. 10 depicts the conversion of a broadcast multicast service MBMS bearer from a point-to-multipoint transmission to a point-to-point transmission. Depending on the number of users, QoS requirements, and cell resources, MBMS services may be transmitted in a point-to-multipoint transmission mode, such as MBSFN transmission, or single cell multicast, or in a point-to-point transmission mode, such as establishing a dedicated channel for the UE. If the number of users is reduced, the transmission mode of the MBMS service can be changed from point-to-multipoint transmission to point-to-point transmission, the MCE counts the number of users, determines to change the point-to-multipoint transmission to the point-to-point transmission, and sends a request to the UE to request the UE to initiate the establishment of a point-to-point channel. Specifically, as shown in fig. 10:
step 501: the MCE sends an MBMS counting request message to the base station.
Optionally, the MCE decides to initiate an MBMS counting procedure, where the counting procedure aims to determine the number of users receiving a certain MBMS service in a certain area, for example, a cell or an SFN area. The MCE sends an MBMS counting request message to the base station. The base station receiving the message can count the number of users under the base station or in a cell under the base station through the RRC message, and then the base station reports the result of the user counting to the MCE. The MCE knows the position of the UE and judges the mode of MBMS data transmission in the next period of time, wherein the mode of data transmission can be a single-cell multicast mode, a point-to-point channel transmission mode or an MBSFN mode. According to the statistical result, the MCE may make a decision, for example, that many users are in the same or same group of cells, and a single-cell multicast transmission mode is used, which may further reduce waste of air interface resources, and at this time, may decide to use a single-cell multicast mode. If the users are scattered in several cells, it may be decided to use a point-to-point channel transmission scheme.
Optionally, the MBMS statistics request message includes an update time of the MBMS control channel MCCH, an identifier of the SFN area, and a service identifier of the MBMS to be counted, for example, TMGI. The MCCH updating time indicates the time of sending a counting request at an air interface by a base station; the SFN area identification indicates an area to be counted, and if the cell on the base station data the SFN area, the base station needs to send a corresponding counting request message on an MBMS control channel of the cell; the service identification of the MBMS to be counted indicates which service user is to be counted specifically, the user receives the service identification from the MBMS control channel, and if the user is interested in the service and needs to receive the data of the service, the user needs to send an RRC counting response message to the base station.
Step 502: the base station sends MBMS counting response information to the MCE, and confirms that the base station information receives the information of the counting request sent by the MCE.
Step 503: the base station sends an MBMS statistic request to the user.
Optionally, after receiving the message in step 501, the base station sends an MBMS statistics request to the user through an MBMS control channel, where the MBMS statistics request carries an MBMS service identifier to be subjected to user statistics, for example, a TMGI, and a user in an RRC connected mode and/or an idle mode may receive the MBMS statistics request.
Step 504: the user sends the MBMS statistic response to the base station.
Optionally, after receiving the MBMS statistics request, the user in the connected mode may directly send an RRC message, an MBMS statistics response message, to the base station. The user in the idle mode needs to establish the RRC connection first and then sends the MBMS counting response message to the base station, the base station can keep the user in the connection mode, and when the base station knows that the MCE counting process is completed and does not need to establish the point-to-point channel, the base station releases the RRC connection of the user, so that the UE enters the idle mode. Or in order to speed up the process of statistics, the existing RRC establishment process is enhanced, and the MBMS statistics is responded through the RRC establishment process, that is, the UE sends a first RRC message, namely an RRC establishment request message, where the message carries information of the statistics response, for example, the UE is indicated by an indication information that the UE needs to receive a certain MBMS service that is being subjected to user statistics, and after receiving the information, the base station records the UE, and then the base station sends an RRC release message to return the UE to the idle mode.
Step 505: the base station sends an MBMS statistics report to the MCE.
Optionally, the base station counts the number of users receiving the MBMS service in the cell of the base station, and then sends an MBMS count report to the MCE. The message carries an identifier of the MBMS service, such as the TMGI, an identifier of the SFN area, an identifier of the cell where the UE is located, and a user statistical result, i.e. the number of users. The number of users may be the number of users of a service in an SFN area, or the number of users in a cell.
Step 506: the MCE sends scheduling information to the base station.
Optionally, according to the result of the user statistics, the MCE determines the MBMS transmission mode used in the next stage, and then notifies the transmission mode to the base station/UE through the scheduling information, and after receiving the scheduling information, the base station sends the scheduling information to the UE at an air interface. There are two implementations of this step:
the first method is as follows: the scheduling information includes indication information for establishing the point-to-point channel, which indicates that the point-to-point channel needs to be established for a certain MBMS service. The indication information may carry service identification information of the MBMS for which the point-to-point channel needs to be established, such as the TMGI or information from which the TMGI may be inferred. The identification of the PDU Session used by the point-to-point bearer may also be carried. The MCE pre-stores the MBMS service identifier and the PDU Session identifier corresponding thereto, and may be pre-configured on the MCE through OAM, or the core network sends the MBMS service start request message, which includes the MBMS service identifier and the PDU Session identifier corresponding thereto.
The second method comprises the following steps: the scheduling information carries service identification information of the MBMS, for example, TMGI or information from which the TMGI can be inferred, and also carries indication information indicating a mode of MBMS bearer determined by the MCE, where the mode of bearer may be set to one of information such as a point-to-point channel, a point-to-multipoint channel, an MBSFN mode, a single cell mode, and the like. The message may also carry an identification of the PDU Session used by the point-to-point bearer. The MCE pre-stores the MBMS service identifier and the corresponding pdusesion identifier, and may be pre-configured on the MCE through OAM, or the core network sends the MBMS service start request message, which includes the MBMS service identifier and the corresponding pdusesion identifier.
Step 507: the base station sends scheduling information to the UE.
Optionally, the base station receives the message of step 506, and the base station transmits the scheduling information on the MBMS control channel. Receiving the information, the UE initiates a process, such as a service request process, to establish a point-to-point channel for transmitting MBMS service data. If the scheduling information contains a PDU Session identifier which the point-to-point wants to use for bearing, the UE uses the identifier to initiate a service request process, if the scheduling information does not contain the PDU Session identifier, the corresponding relation between the MBMS service identifier and the PDU Session identifier is configured in advance at the UE end, and the UE can use the PDU Session identifier to initiate the service request.
Step 508: the UE initiates a procedure to establish a point-to-point channel.
Step 509: the MCE sends a service suspension indication message to the MBMS core network.
Step 510: the MBMS core network sends a service suspension request to the MCE. The MCE knows that the core network has started to transmit MBMS data by point-to-point transmission.
Optionally, the core network may start to send MBMS data to the UE through a point-to-point channel, the MBMS core network may send a message that the MBMS service is temporarily stopped to the base station, and the MCE may update a message on the MBMS control channel and send a message that the service is stopped to the UE.
Fig. 11 depicts the conversion of a broadcast multicast service MBMS bearer from a point-to-point transmission to a point-to-multipoint transmission. Depending on the number of users, QoS requirements, and cell resources, MBMS services may be transmitted in a point-to-multipoint transmission mode, such as MBSFN transmission, or single cell multicast, or in a point-to-point transmission mode, such as establishing a dedicated channel for the UE. The base station counts the number of users receiving the MBMS service by the point-to-point channel, the number of the users is increased, and the transmission mode of the MBMS service can be changed from point-to-point to point-to-multipoint transmission. Specifically, as shown in fig. 11:
step 601: the core network sends a protocol data unit Session (PDU Session) establishment request message to the base station, requesting the base station to establish a point-to-point channel.
Alternatively, one method is that the MBMS core network initially decides to establish a point-to-point channel for transmitting data, and the other method is that by the methods of the first and second embodiments of the present invention, the transmission is initially decided in the MBSFN manner, and then the MCE decides to convert from the point-to-multipoint transmission to the point-to-point transmission according to the number of users. The specific process can be seen in the first embodiment and the second embodiment. The method for establishing a point-to-point channel is the same as the current method for establishing a PDU Session bearer. The message includes the identification of PDU Session, the identification of QoS flow included in PDU Session, the quality requirement of QoS flow and other information. Optionally, the message further includes a service identifier of the MBMS, where the identifier indicates that the data of the MBMS service indicated by the service identifier is transmitted on the PDU Session.
Step 602: the base station sends a radio access connection (radio resource control, RRC) reconfiguration request message to the UE requesting establishment of a point-to-point UE dedicated channel.
Alternatively, the base station needs to configure a radio channel between the base station and the UE. The base station sends RRC reconfiguration request information to the UE, wherein the information comprises configuration information of a wireless channel. This step is the same as the current RRC reconfiguration procedure.
Step 603: and the UE sends an RRC reconfiguration response message to the base station.
Optionally, the UE establishes a radio channel according to the configuration, and the UE sends a response message to the base station.
Step 604: the base station sends a protocol data unit Session (PDU Session) setup response message to the core network.
Optionally, the base station sends a response message to the core network, indicating that the UE dedicated channel is successfully established.
Step 605: the base station counts the number of users receiving the MBMS service, and if necessary, the base station sends a message reported by the user statistics to the MCE.
Optionally, if the MBMS service is transmitted using a point-to-point channel, that is, a UE dedicated channel, and in order to count the number of users, the base station needs to know a corresponding relationship between the MBMS service identifier and the PDU Session, a method is described in which the point-to-point channels are all allocated with an identical identifier of the PDU Session, the base station needs to know a corresponding relationship between the MBMS service identifier and the PDU Session identifier, and the base station may know the corresponding relationship through a configuration manner of OAM, or when the UE dedicated channel is established, the corresponding MBMS service identifier is also sent to the base station, that is, the base station may know the corresponding relationship through the MBMS service identifier and the PDU Session identifier carried in the message in step 601. The base station can count how many users receive the data of the MBMS service according to the corresponding relation. Specifically, it can be known that:
the method comprises the following steps: the PDU Session establishment request message sent by the core network includes an identifier of the PDU Session and a service identifier of the MBMS corresponding to the PDU Session, for example, TMGI. According to the corresponding relation between the MBMS service identification and the PDU Session identification, the base station can count the users of a certain MBMS service. At this time, all the point-to-point UE dedicated channels corresponding to one MBMS service use the same PDU Session identifier or may use different PDU Session identifiers.
The second method comprises the following steps: when the MCE determines to establish the point-to-point channel, the MCE sends a message to the base station to inform the base station of the establishment of the point-to-point channel and inform the base station of the corresponding relation between the MBMS service identification and the PDUSESS identification. At this time, all the point-to-point UE dedicated channels corresponding to one MBMS service use the same PDU Session identifier.
The third method comprises the following steps: OAM (Operation Administration and Maintenance) is pre-configured on a base station, the base station knows the corresponding relation between the PDU Session identification and the MBMS service identification through configuration, and at the moment, all the point-to-point UE dedicated channels corresponding to one MBMS service use the same PDU Session identification.
Optionally, the base station counts the number of users of a certain MBMS service and reports the number of users to the MCE. The reporting mode, such as periodic reporting or time triggered reporting, may be according to the configuration in the MBMS statistics request message sent by the MCE before. The report message sent by the base station comprises at least one of service identification, cell identification and number of users.
Step 606: the MCE sends a service start request message to the MBMS core network.
Optionally, the MCE determines whether to start transmitting the MBMS service using the point-to-multipoint service according to the report of the base station, and the MCE transmits a message to the MBMS core network requesting the core network to transmit data to the base station in a point-to-multipoint manner. The message contains a service identity and also information indicating the start of the transmission.
Step 607: and the MBMS core network sends a service recovery request message to the MCE.
Optionally, the MBMS core network confirms that the data of the MBMS service can be transmitted using a point-to-multipoint channel, and transmits a response message to the MCE.
Step 608: the MCE sends scheduling information to the base station.
Optionally, the MCE sends scheduling information to the base station, where the message includes an identifier of the service, and indicates that the MBMS service is to start transmitting data. The message may also contain configuration information for the MBMS data channel, i.e., MTCH.
Step 609: the base station sends scheduling information to the UE.
Optionally, the base station transmits the received scheduling information on an MBMS control channel. The UE receives the information, knows that the MBMS starts to transmit data in a point-to-multipoint mode, and receives the MBMS data on a corresponding channel according to the configuration information of the MBMS data channel.
Step 610: the base station initiates a protocol data unit Session (PDU Session) release request.
Alternatively, the base station may initiate a request for channel release, releasing the point-to-point channel.
Example two
Based on the same inventive concept of the foregoing embodiment, an embodiment of the present application further provides a base station, and a schematic structural diagram of the apparatus is shown in fig. 12, and the base station 140 includes a first processing module 1401 and a second processing module 1402.
A first processing module 1401, configured to receive a point-to-point establishment request sent by a multi-cell multicast coordination entity MCE, where the point-to-point establishment request is used to indicate that a point-to-point channel is established for transmission of a multimedia broadcast multicast service MBMS, and the point-to-point establishment request includes at least one of a service identifier of the MBMS and an identifier of a protocol data unit Session PDU Session;
the second processing module 1402 is configured to send a bearer establishment request to the core network according to the point-to-point establishment request.
Optionally, before receiving a point-to-point establishment request sent by the MCE, the first processing module 1401 is configured to receive an MBMS statistics request sent by the MCE, where the MBMS statistics request includes at least one of a time for updating a multicast control channel MCCH, an identifier of a single frequency network SFN area, and a service identifier of an MBMS to be counted; sending MBMS counting response to the MCE, and confirming that the base station has received the MBMS counting request sent by the MCE; transmitting an MBMS counting request to the UE; receiving MBMS counting response sent by UE, which is used for confirming that the UE has received the MBMS counting request sent by the base station; and sending MBMS statistics report to the MCE, wherein the MBMS statistics report comprises the number of the UE receiving the MBMS in the cell of the base station.
Optionally, after sending the bearer establishment request to the core network, the second processing module 1402 is configured to receive a PDU Session establishment request sent by the core network, where the PDU Session establishment request includes at least one of a service identifier of the MBMS and a PDU Session identifier ID, and the service identifier of the MBMS or the PDU Session identifier, and is configured to convert point-to-multipoint transmission of the MBMS bearer into point-to-point transmission and establish a point-to-point channel.
Optionally, the method for sending the bearer establishment request to the core network includes at least one of the following:
when the UE is in a connection mode, sending a bearing establishment request to a core network through an established signaling bearing between the UE and the core network;
when the UE is in an idle mode, the base station establishes RRC connection with the UE, and the base station sends a bearer establishment request to a core network;
when the UE is in an idle mode, the UE sends an MBMS control signaling, the MBMS control signaling is used for indicating that RRC connection is established between the base station and the UE, and the base station sends a bearing establishment request to a core network.
For the content that is not described in detail in the base station 140 provided in the embodiment of the present application, reference may be made to the method for establishing the channel, and the beneficial effect that the base station 140 provided in the embodiment of the present application can achieve is the same as the method for establishing the channel, which is not described herein again.
The application of the embodiment of the application has at least the following beneficial effects:
receiving a point-to-point establishment request sent by a multi-cell multicast coordination entity MCE, wherein the point-to-point establishment request is used for indicating the establishment of a point-to-point channel for the transmission of a multimedia broadcast multicast service MBMS; sending a load building request to a core network according to the point-to-point building request; the device is used for determining that the point-to-point channel is successfully established and converting the point-to-multipoint channel into the point-to-point channel; in this way, a conversion of point-to-multipoint channels to point-to-point channels is achieved.
Based on the same inventive concept of the foregoing embodiment, an embodiment of the present application further provides an MCE, a schematic structural diagram of the apparatus is shown in fig. 13, and the MCE150 includes a third processing module 1501 and a fourth processing module 1502.
A third processing module 1501, configured to receive an MBMS statistics report sent by the base station, where the MBMS statistics report includes the number of UEs that receive an MBMS in a cell of the base station;
a fourth processing module 1502, configured to send a point-to-point establishment request to the base station according to the MBMS statistics report, where the point-to-point establishment request is used to instruct to establish a point-to-point channel, and convert a point-to-multipoint channel into a point-to-point channel, and the point-to-point establishment request includes at least one of a service identifier of the MBMS and an identifier of a PDU Session.
Optionally, after sending the point-to-point establishment request to the base station, the fourth processing module 1502 is configured to receive an MBMS suspension request sent by a core network; and updating the message on the MBMS control channel according to the MBMS suspension request, and sending a service suspension message to the UE.
Optionally, the point-to-point establishment request includes at least one of a service identifier of an MBMS and an identifier of a PDU Session, where the service identifier of the MBMS includes at least one of a temporary mobile group identifier TMGI and first indication information, the first indication information indicates a mode of MBMS bearer after the MCE performs UE number statistics, and the mode of MBMS bearer includes at least one of a point-to-point channel, a point-to-multipoint channel, a multimedia broadcast multicast service single frequency network MBSFN mode, and a single cell mode.
Optionally, an MBMS control message is sent to the UE, where the MBMS control message includes a service identifier of the MBMS and second indication information of the peer-to-peer channel, and the MBMS control message is used for the UE to initiate establishment of the peer-to-peer channel, and for the UE to store a correspondence between the PDU Session identifier and the service identifier of the MBMS.
For the content that is not described in detail in the MCE150 provided in the embodiment of the present application, reference may be made to the method for establishing the channel, and the beneficial effect that the MCE150 provided in the embodiment of the present application can achieve is the same as the method for establishing the channel, which is not described herein again.
The application of the embodiment of the application has at least the following beneficial effects:
conversion of a point-to-multipoint channel to a point-to-point channel is achieved.
Based on the same inventive concept of the foregoing embodiment, an embodiment of the present application further provides a base station, and a schematic structural diagram of the base station is shown in fig. 14, where the base station 160 includes a fifth processing module 1601, a sixth processing module 1602, a seventh processing module 1603, and an eighth processing module 1604.
A fifth processing module 1601, configured to send an MBMS statistics report to a multi-cell multicast coordination entity MCE;
a sixth processing module 1602, configured to receive scheduling information sent by the MCE, where the scheduling information includes a service identifier and a transmission mode of an MBMS;
a seventh processing module 1603, configured to send the scheduling information to the UE;
an eighth processing module 1604, configured to receive a request message for establishing a point-to-point channel sent by the UE.
For the content that is not described in detail in the base station 160 provided in the embodiment of the present application, reference may be made to the method for establishing the channel, and the beneficial effect that the base station 160 provided in the embodiment of the present application can achieve is the same as the method for establishing the channel, which is not described herein again.
The application of the embodiment of the application has at least the following beneficial effects:
conversion of a point-to-multipoint channel to a point-to-point channel is achieved.
Based on the same inventive concept of the foregoing embodiment, an embodiment of the present application further provides another base station, and a schematic structural diagram of the apparatus is shown in fig. 15, where the base station 170 includes an eleventh processing module 1701, a twelfth processing module 1702, a thirteenth processing module 1703, a fourteenth processing module 1704, a fifteenth processing module 1705, a sixteenth processing module 1706, a seventeenth processing module 1707, and an eighteenth processing module 1708.
An eleventh processing module 1701, configured to receive a PDU Session establishment request sent by a core network, where the PDU Session establishment request is used to request a base station to establish a point-to-point channel, and the point-to-point channel includes a point-to-point UE dedicated channel;
a twelfth processing module 1702, configured to send, according to the PDU Session establishment request, an RRC reconfiguration request to the UE, where the RRC reconfiguration request is used to establish a point-to-point UE dedicated channel;
a thirteenth processing module 1703, configured to receive an RRC reconfiguration response sent by the UE;
a fourteenth processing module 1704, configured to send a PDU Session establishment response message to the core network, where the PDU Session establishment response message is used to confirm that the point-to-point UE dedicated channel is successfully established;
a fifteenth processing module 1705, configured to determine the number of UEs receiving the MBMS, and send an MBMS statistics report to the MCE according to the number of UEs receiving the MBMS, where the MBMS statistics report includes the number of UEs receiving the MBMS in the cell of the base station;
a sixteenth processing module 1706, configured to receive scheduling information sent by the MCE;
a seventeenth processing module 1707, configured to send scheduling information to the UE;
an eighteenth processing module 1708, configured to initiate a PDU Session release request to the core network according to the scheduling information, and configured to release the point-to-point channel.
Optionally, the determining the number of UEs receiving the MBMS includes at least one of:
the PDU Session establishment request comprises a PDU Session identification and an MBMS service identification, the number of the UE receiving the MBMS is determined according to the corresponding relation between the PDU Session identification and the MBMS service identification, the MBMS service identification comprises TMGI, wherein all point-to-point UE dedicated channels corresponding to one MBMS use the same PDU Session identification;
receiving a message which is sent by MCE and comprises a PDU Session identification and an MBMS service identification, and determining the number of the UE receiving the MBMS according to the corresponding relation between the PDU Session identification and the MBMS service identification, wherein all point-to-point UE dedicated channels corresponding to one MBMS use the same PDU Session identification;
and determining the number of the UE receiving the MBMS according to the corresponding relation between the PDU Session identification and the MBMS service identification, wherein the operation maintenance management OAM is configured on the base station in advance, and all the point-to-point UE dedicated channels corresponding to one MBMS use the same PDSUSsion identification.
For the content that is not described in detail in the base station 170 provided in the embodiment of the present application, reference may be made to the method for establishing the channel, and the beneficial effect that the base station 170 provided in the embodiment of the present application can achieve is the same as the method for establishing the channel, which is not described herein again.
The application of the embodiment of the application has at least the following beneficial effects:
the conversion of point-to-point channels to point-to-multipoint channels is achieved.
Based on the same inventive concept of the foregoing embodiment, an embodiment of the present application further provides another MCE, and a schematic structural diagram of the apparatus is shown in fig. 16, where the MCE180 includes a nineteenth processing module 1801, a twentieth processing module 1802, a twenty-first processing module 1803, and a twenty-second processing module 1804.
A nineteenth processing module 1801, configured to receive an MBMS statistics report sent by a base station;
a twentieth processing module 1802, configured to send a service start request to the core network according to the MBMS statistics report, and configured to request the core network to transmit the MBMS data to the base station through the point-to-multipoint channel;
a twenty-first processing module 1803, configured to receive a service recovery request sent by a core network, and determine that the core network transmits MBMS data to the base station through a point-to-multipoint channel;
a twenty-second processing module 1804, configured to send scheduling information to the base station, where the base station releases the point-to-point channel and converts the point-to-point channel into a point-to-multipoint channel.
Optionally, determining to establish a point-to-multipoint channel according to the MBMS statistics report; and transmitting an MBMS control message to the UE for the UE to receive MBMS data from the point-to-multipoint channel.
For the content that is not described in detail in the MCE180 provided in the embodiment of the present application, reference may be made to the method for establishing the channel, and the beneficial effects that the MCE180 provided in the embodiment of the present application can achieve are the same as the method for establishing the channel, which is not described herein again.
The application of the embodiment of the application has at least the following beneficial effects:
the conversion of point-to-point channels to point-to-multipoint channels is achieved.
It will be understood by those within the art that each block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. Those skilled in the art will appreciate that the computer program instructions may be implemented by a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, implement the aspects specified in the block or blocks of the block diagrams and/or flowchart illustrations disclosed herein.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.

Claims (18)

1. A method for establishing a channel, applied to a base station, includes:
receiving a point-to-point establishment request sent by a multi-cell multicast coordination entity MCE, wherein the point-to-point establishment request is used for indicating the establishment of a point-to-point channel for the transmission of a multimedia broadcast multicast service MBMS, and the point-to-point establishment request comprises at least one of a service identifier of the MBMS and an identifier of a protocol data unit Session PDU Session;
and sending a bearing establishment request to a core network according to the point-to-point establishment request.
2. The method according to claim 1, wherein before said receiving the point-to-point establishment request sent by the MCE, further comprising:
receiving an MBMS counting request sent by the MCE, wherein the MBMS counting request comprises at least one item of time for updating a multicast control channel MCCH, an identifier of a single frequency network SFN area and a service identifier of the MBMS to be counted;
sending an MBMS counting response to the MCE, wherein the MBMS counting response is used for confirming that the base station receives the MBMS counting request sent by the MCE;
sending the MBMS counting request to UE;
receiving the MBMS counting response sent by the UE, and being used for confirming that the UE has received the MBMS counting request sent by the base station;
and sending MBMS statistics report to the MCE, wherein the MBMS statistics report comprises the number of the UE receiving the MBMS in the cell of the base station.
3. The method of claim 1, wherein after sending the bearer establishment request to the core network, further comprising:
and receiving a PDU Session establishment request sent by the core network, wherein the PDU Session establishment request includes at least one of a service identifier of the MBMS and an identifier of the PDU Session, and the service identifier of the MBMS or the identifier of the PDU Session is used for converting point-to-multipoint transmission of MBMS bearer into point-to-point transmission and establishing a point-to-point channel.
4. The method of claim 1, wherein the sending the bearer establishment request to the core network comprises at least one of:
when the UE is in a connection mode, sending a bearing establishment request to a core network through an established signaling bearing between the UE and the core network;
when the UE is in an idle mode, the base station establishes RRC connection with the UE, and the base station sends a bearer establishment request to a core network;
and when the UE is in an idle mode, transmitting an MBMS control signaling, wherein the MBMS control signaling is used for indicating that RRC connection is established between the base station and the UE, and the base station transmits a bearing establishment request to a core network.
5. A method for establishing a channel, applied to an MCE, is characterized by comprising:
receiving an MBMS statistical report sent by the base station, wherein the MBMS statistical report comprises the number of UE receiving MBMS in a cell of the base station;
and sending a point-to-point establishment request to the base station according to the MBMS statistical report, wherein the point-to-point establishment request is used for indicating the establishment of a point-to-point channel and converting the point-to-multipoint channel into the point-to-point channel, and the point-to-point establishment request comprises at least one of a service identifier of the MBMS and an identifier of the PDU Session.
6. The method of claim 5, wherein after the sending the point-to-point establishment request to the base station, further comprising:
receiving an MBMS suspension request sent by a core network;
and updating the message on the MBMS control channel according to the MBMS pause request, and sending a service pause message to the UE.
7. The method of claim 5, wherein the service identifier of the MBMS comprises at least one of a Temporary Mobile Group Identifier (TMGI) and first indication information, the first indication information indicating a mode of the MBMS bearer after the MCE performs UE quantity statistics, and the mode of the MBMS bearer comprises at least one of a point-to-point channel, a point-to-multipoint channel, a multimedia broadcast multicast service single frequency network (MBSFN) mode and a single cell mode.
8. The method of claim 5, further comprising:
and sending an MBMS control message to the UE, wherein the MBMS control message comprises a service identifier of the MBMS and second indication information of the point-to-point channel, and the MBMS control message is used for the UE to initiate the establishment of the point-to-point channel and for the UE to store the corresponding relation between the PDU Session identifier and the service identifier of the MBMS.
9. A method for establishing a channel, applied to a base station, includes:
sending MBMS statistics report to a multi-cell multicast coordination entity MCE;
receiving scheduling information sent by the MCE, wherein the scheduling information comprises a service identifier and a transmission mode of the MBMS;
sending the scheduling information to the UE;
and receiving a request message for establishing the point-to-point channel sent by the UE.
10. A method for establishing a channel, applied to a base station, includes:
receiving a PDU Session establishment request sent by a core network, wherein the PDU Session establishment request is used for requesting the base station to establish a point-to-point channel, and the point-to-point channel comprises a point-to-point UE dedicated channel;
sending an RRC reconfiguration request to the UE according to the PDU Session establishment request, wherein the RRC reconfiguration request is used for establishing the point-to-point UE dedicated channel;
receiving an RRC reconfiguration response sent by the UE;
sending a PDU Session establishment response message to a core network for confirming that the establishment of the point-to-point UE dedicated channel is successful;
determining the number of UE receiving MBMS, and sending MBMS statistics report to MCE according to the number of the UE receiving MBMS, wherein the MBMS statistics report comprises the number of the UE receiving MBMS in a cell of the base station;
receiving scheduling information sent by the MCE;
sending the scheduling information to the UE;
and initiating a PDU Session release request to the core network according to the scheduling information, wherein the PDU Session release request is used for releasing the point-to-point channel.
11. The method of claim 10, wherein the determining the number of UEs receiving the MBMS comprises at least one of:
the PDU Session establishment request comprises a PDU Session identification and an MBMS service identification, the number of the UE receiving the MBMS is determined according to the corresponding relation between the PDU Session identification and the MBMS service identification, the MBMS service identification comprises TMGI, wherein all point-to-point UE dedicated channels corresponding to one MBMS use the same PDU Session identification;
receiving a message which is sent by MCE and comprises a PDU Session identification and an MBMS service identification, and determining the number of the UE receiving the MBMS according to the corresponding relation between the PDU Session identification and the MBMS service identification, wherein all point-to-point UE dedicated channels corresponding to one MBMS use the same PDU Session identification;
and determining the number of the UE receiving the MBMS according to the corresponding relation between the PDU Session identification and the MBMS service identification, wherein the operation maintenance management OAM is configured on the base station in advance, and all the point-to-point UE dedicated channels corresponding to one MBMS use the same PDU Session identification.
12. A method for establishing a channel, applied to an MCE, is characterized by comprising:
receiving MBMS statistical report sent by a base station;
sending a service start request to a core network according to the MBMS statistical report, wherein the service start request is used for requesting the core network to transmit MBMS data to the base station through a point-to-multipoint channel;
receiving a service recovery request sent by the core network, and determining that the core network transmits the data of the MBMS to the base station through a point-to-multipoint channel;
and sending scheduling information to a base station, wherein the scheduling information is used for releasing the point-to-point channel by the base station and converting the point-to-point channel into a point-to-multipoint channel.
13. The method of claim 12, further comprising:
determining to establish a point-to-multipoint channel according to the MBMS statistical report;
and sending an MBMS control message to the UE for the UE to receive MBMS data from the point-to-multipoint channel.
14. A base station, comprising:
the system comprises a first processing module, a second processing module and a third processing module, wherein the first processing module is used for receiving a point-to-point establishment request sent by a multi-cell multicast coordination entity MCE, the point-to-point establishment request is used for indicating the establishment of a point-to-point channel for the transmission of a multimedia broadcast multicast service MBMS, and the point-to-point establishment request comprises at least one of a service identifier of the MBMS and an identifier of a protocol data unit Session PDU Session;
and the second processing module is used for sending the bearing establishment request to the core network according to the point-to-point establishment request.
15. An MCE, comprising:
a third processing module, configured to receive an MBMS statistics report sent by the base station, where the MBMS statistics report includes the number of UEs that receive an MBMS in a cell of the base station;
and the fourth processing module is configured to send a point-to-point establishment request to the base station according to the MBMS statistics report, where the point-to-point establishment request is used to instruct establishment of a point-to-point channel and convert a point-to-multipoint channel into a point-to-point channel, and the point-to-point establishment request includes at least one of a service identifier of the MBMS and an identifier of a PDU Session.
16. A base station, comprising:
a fifth processing module, configured to send an MBMS statistics report to a multi-cell multicast coordination entity MCE;
a sixth processing module, configured to receive scheduling information sent by the MCE, where the scheduling information includes a service identifier and a transmission mode of an MBMS;
a seventh processing module, configured to send the scheduling information to the UE;
an eighth processing module, configured to receive a request message for establishing a point-to-point channel sent by the UE.
17. A base station, comprising:
an eleventh processing module, configured to receive a PDU Session establishment request sent by a core network, where the PDU Session establishment request is used to request the base station to establish a point-to-point channel, where the point-to-point channel includes a point-to-point UE dedicated channel;
a twelfth processing module, configured to send an RRC reconfiguration request to the UE according to the PDU Session establishment request, and configured to establish the point-to-point UE dedicated channel;
a thirteenth processing module, configured to receive an RRC reconfiguration response sent by the UE;
a fourteenth processing module, configured to send a PDU Session establishment response message to a core network, and configured to confirm that the peer-to-peer UE dedicated channel is successfully established;
a fifteenth processing module, configured to determine the number of UEs that receive an MBMS, and send an MBMS statistics report to an MCE according to the number of UEs that receive the MBMS, where the MBMS statistics report includes the number of UEs that receive the MBMS in a cell of the base station;
a sixteenth processing module, configured to receive the scheduling information sent by the MCE;
a seventeenth processing module, configured to send the scheduling information to the UE;
and the eighteenth processing module is configured to initiate a PDU Session release request to the core network according to the scheduling information, and is configured to release the point-to-point channel.
18. An MCE, comprising:
a nineteenth processing module, configured to receive an MBMS statistics report sent by a base station;
a twentieth processing module, configured to send a service start request to a core network according to the MBMS statistics report, and configured to request the core network to transmit MBMS data to the base station through a point-to-multipoint channel;
a twenty-first processing module, configured to receive a service restoration request sent by the core network, and determine that the core network transmits MBMS data to the base station through a point-to-multipoint channel;
and a twenty-second processing module, configured to send scheduling information to the base station, where the base station releases the point-to-point channel and converts the point-to-point channel into a point-to-multipoint channel.
CN201910849529.3A 2019-09-09 2019-09-09 Channel establishment method, base station and multi-cell Multicast Coordination Entity (MCE) Pending CN112469142A (en)

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CN201910849529.3A CN112469142A (en) 2019-09-09 2019-09-09 Channel establishment method, base station and multi-cell Multicast Coordination Entity (MCE)
US17/640,955 US12349166B2 (en) 2019-09-09 2020-09-09 Method for channel establishment, base station and multi-cell multicast coordination entity MCE
PCT/KR2020/012169 WO2021049871A1 (en) 2019-09-09 2020-09-09 Method for channel establishment, base station and multi-cell multicast coordination entity mce
US18/999,325 US20250133579A1 (en) 2019-09-09 2024-12-23 Method for channel establishment, base station and multi-cell multicast coordination entity mce

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