WO2009021418A1 - Method for multimedia broadcast multicast service access under long time evolution architecture - Google Patents

Method for multimedia broadcast multicast service access under long time evolution architecture Download PDF

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Publication number
WO2009021418A1
WO2009021418A1 PCT/CN2008/071353 CN2008071353W WO2009021418A1 WO 2009021418 A1 WO2009021418 A1 WO 2009021418A1 CN 2008071353 W CN2008071353 W CN 2008071353W WO 2009021418 A1 WO2009021418 A1 WO 2009021418A1
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Prior art keywords
broadcast multicast
multicast service
multimedia broadcast
mbms
node
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PCT/CN2008/071353
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French (fr)
Chinese (zh)
Inventor
Lirong Shi
Hengxing Zhai
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Zte Corporation
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Publication of WO2009021418A1 publication Critical patent/WO2009021418A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
    • H04L12/189—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast in combination with wireless systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/58—Message adaptation for wireless communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W80/00—Wireless network protocols or protocol adaptations to wireless operation
    • H04W80/04—Network layer protocols, e.g. mobile IP [Internet Protocol]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements

Definitions

  • the mobile communication long term evolution in multimedia broadcast multicast service architecture Technical Field
  • the present invention relates to a method for accessing a communication or collar, and in particular, relates to a 3GPP (The 3 rd Generation Partnership Project , the third mobile communication ⁇ ⁇ Partnership Project) proposed Multimedia Broadcast Multicast Service (MBMS) access method under the Long Time Evolution (LTE) architecture.
  • 3GPP The 3 rd Generation Partnership Project , the third mobile communication ⁇ ⁇ Partnership Project
  • MBMS Multimedia Broadcast Multicast Service
  • LTE Long Time Evolution
  • EUTRAN Evolved UTRAN: A next-generation wireless access network that provides higher uplink and downlink rates, lower transmission delays, and more reliable wireless transmission.
  • MME Mobility Management Entity: Control plane function entity, responsible for managing and storing UE (User Equipment) context (such as UE identity, mobility management status, user security parameters, etc.), assigning temporary identifiers to users, and locating UEs. It is responsible for authenticating the user in the tracking area or the network.
  • UE User Equipment
  • UE context such as UE identity, mobility management status, user security parameters, etc.
  • assigning temporary identifiers to users and locating UEs. It is responsible for authenticating the user in the tracking area or the network.
  • SAE GW User plane function entity, user plane data routing processing, divided into Serving and PDN (external data network).
  • Serving SAE GW is the mobile pot point between the SAE system and the traditional 3 GPP system and the mobile pot point between the e-Node B;
  • PDN SAE GW terminates the downlink data of the UE in idle state, when the downlink data sent to the UE arrives At the same time, paging is initiated, and the context of the UE, such as IP bearer service parameters and network internal routing information, is managed and stored.
  • the LTE/SAE network has the functions of activating, maintaining, and deactivating bearers, and continuously providing data services for mobile users.
  • 3GPP proposes to use MBMS (Multimedia Broadcast Multicast Service) on the SAE/LTE architecture and based on WCDMA (Wideband Code Division Multiple Access) system.
  • MBMS Multimedia Broadcast Multicast Service
  • WCDMA Wideband Code Division Multiple Access
  • MBMS radio network controller
  • Node Bs base stations
  • Data integration at the physical layer can be performed to improve the reception of the MBMS service.
  • the RNC also has functions such as resource scheduling to implement service data transmission of multiple MBMS services in the RNC and subordinate base stations, and perform reasonable resource allocation and scheduling to optimize radio resources.
  • MBMS of the SAE/LTE system a similar entity is needed to implement functions such as node synchronization and resource coordination.
  • 3GPP proposes to introduce an MBMS-GW re-enactment entity in the SAE/LTE architecture.
  • This entity acts as a node between the BM-SC (Broadcast and Multicast Service Center) and the e-Node B.
  • the access gateway of the network is responsible for processing user data related messages and session related signaling, does not involve wireless network parameters, and can also implement synchronization between MBMS-GW and e-Node B.
  • the BM-SC is connected to the Content Provider/Multicast Broadcast Source to complete data aggregation.
  • MCE MBMS Coordination Entity
  • MCE MBMS Coordination Entity
  • LTE MBMS is related to MBSFN (MBMS Single Frequency Network) 4:
  • MBSFN sync area All base stations in a MBSFN sync area can synchronize and perform MBSFN transmission.
  • the MBSFN sync area supports one or more MBSFN areas. At a given frequency level, a base station belongs to only one MBSFN sync area.
  • the MBSFN sync area is independent of the MBMS service area.
  • MBSFN transmission Simultaneous transmission of the same waveform from multiple cells, MBSFN transmission on the MBSFN area can be seen by the user as transmission from the same source.
  • MBSFN area One MBSFN area contains a group of cells in the MBSFN synchronization area, and these cells can perform MBSFN transmission.
  • One cell in the MBSFN synchronization area can be multiple Part of the MBSFN area, and each MBSFN area can be distinguished by different transmission content and participating cell power ports.
  • the introduction of these concepts enables MBMS service transmission in SAE/LTE to be divided into two categories: one is MBSFN transmission and the other is non-MBSFN transmission.
  • the MBSFN area is actually an area that can adjust its own size according to the location and number of users. It can be static or dynamic, and is set according to the attributes of the service.
  • the MCE For a certain MBMS service, the MCE needs to select the appropriate resources, including parameters such as frequency and time, to construct an appropriate MBSFN for MBSFN transmission. For multiple MBMS services, the MCE needs to coordinate its corresponding multiple MBSFN transmissions, including MBSFN area size, use of wireless resources, etc., in order to be able to use resources reasonably and efficiently.
  • LTE MBMS architecture solutions Based on the characteristics of MBMS in SAE/LTE mentioned above, various vendors and operators have proposed corresponding LTE MBMS architecture solutions. The two current important solutions are: (1) NTT DoCoMo, T-Mobile, Orange and other supported Lightweight architectures proposed by NSN (shown in Figure 2); (2) Ericsson's proposed LTE MBMS architecture ( Figure 3 ).
  • the present invention aims to provide an MBMS access method in an LTE architecture.
  • the MBMS access method in the LTE architecture includes: the broadcast multicast center sends a session start message to the multimedia broadcast multicast service gateway; the multimedia broadcast multicast service gateway allocates the user plane resource and the IP multicast address, and The multimedia broadcast multicast service coordination function entity sends a session start message; the multimedia broadcast multicast service coordination function entity performs a coordinated decision of the radio resources, and sends a session start message to the e-Node B; the e-Node B joins the multicast group.
  • the session start message sent by the broadcast multicast center to the multimedia broadcast multicast service gateway may include indication information about whether to perform radio resource coordination. In this way, the multimedia broadcast multicast service coordination function entity performs coordinated decision of the wireless resource according to the indication information.
  • the multimedia broadcast multicast service coordination function entity performs the coordinated decision of the wireless resource according to the cell configuration.
  • the session start message sent by the multimedia broadcast multicast service gateway to the multimedia broadcast multicast service coordination function entity includes an IP multicast address. Accordingly, the e-Node B force. Enter the multicast group corresponding to the IP multicast address.
  • the session start message sent by the multimedia broadcast multicast service coordination function entity to the e-Node B includes the radio resource coordination result.
  • FIG. 1 is a schematic diagram of an SAE architecture according to the prior art
  • FIG. 2 is a schematic diagram of an MBMS (Lightweight) architecture based on the SAE/LTE network architecture according to the prior art
  • FIG. 1 is a schematic diagram of an SAE architecture according to the prior art
  • FIG. 2 is a schematic diagram of an MBMS (Lightweight) architecture based on the SAE/LTE network architecture according to the prior art
  • FIG. 1 is a schematic diagram of an SAE architecture according to the prior art
  • FIG. 2 is a schematic diagram of an MBMS (Lightweight) architecture based on the SAE/LTE network architecture according to the prior art
  • FIG. 1 is a schematic diagram of an SAE architecture according to the prior art
  • FIG. 2 is a schematic diagram of an MBMS (Lightweight) architecture based on the SAE/LTE network architecture according to the prior art
  • FIG. 1 is a schematic diagram of an SAE architecture according to the prior art
  • FIG. 2 is a
  • FIG. 3 is a schematic diagram of an MBMS (Lightweight) architecture according to the prior art; Schematic diagram of an MBMS architecture based on the SAE/LTE network architecture; and FIG. 4 is a flowchart of an MBMS access method in an LTE architecture according to an embodiment of the present invention.
  • DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention are described with reference to the accompanying drawings.
  • An embodiment of the present invention provides an MBMS access method in an LTE architecture.
  • the multimedia broadcast multicast service coordination function entity (MCE) mentioned below can be regarded as a logical entity. Whether a physical entity is independent or not depends on the requirements of the operator. As shown in FIG.
  • MCE multimedia broadcast multicast service coordination function entity
  • Step S402 A Broadcast Multicast Center (BM-SC) sends a session start message (or an MBMS session start message to the Multimedia Broadcast Multicast Service Gateway (MBMS-GW), where The indication information of whether to perform radio resource coordination may be included);
  • Step S404 the MBMS-GW allocates the user plane resource and the IP multicast address, and sends a session start message to the multimedia broadcast multicast service coordination function entity (MCE), the session start message In addition to the content of the message in the message sent by the BM-SC, the IP multicast address is also included;
  • Step S406 the MCE performs a coordinated decision on the radio resource, and sends a session start message to the e-Node B (eNB);
  • the MCE carries the indication information, and the MCE performs the coordinated decision of the radio resource according to the indication information.
  • the MCE performs the coordinated decision of the radio resource according to the cell configuration; Step S408, e-Node B force. Enter the multicast group corresponding to the IP multicast address.
  • the session start message sent in step S406 includes the radio resource coordination result.

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

Abstract

A method for the multimedia broadcast multicast service access under the long time evolution architecture. The method includes: the BM-SC sends the session starting notify to the MBMS GW (402); the MBMS GW allocates the user interface resource and the IP multicast address and sends the session starting notify to the MCE (S404); the MCE processes a coordination decision of wireless resource and sends the session starting notify to the e-Node B (S406); the e-Node B joins the multicast group (S408).

Description

长期演进架构下的多媒体广播多播业务接入方法 技术领域 本发明涉及通信领或， 并且具体地， 涉及 3GPP ( The 3rd Generation Partnership Project, 第三^ ^移动通信伙伴关系项目 ） 提出的移动通信系统长 期演进 ( Long Time Evolution , LTE ) 架构下的多媒体广播多播业务 ( Multimedia Broadcast Multicast Service, MBMS )接入方法。 背景技术 随着网络架构扁平化的发展以及多种高速宽带可移动接入方式的出现， 使得演进的无线通信系统能够提供更高的传输速率、 更短的传输延时、 更低 的成本， 同时支持 3GPP内部接入系统之间的移动性以及 3GPP接入系统和 非 3GPP 接入系统之间的移动性等等， 促使移动通信网络提出了 LTE/SAE ( System Architecture Evolution, 系统架构演进 ) 的下一^ ^架构理念。 目前 SAE的才 ϋ架如图 1所示， 其中的网元有： The mobile communication long term evolution in multimedia broadcast multicast service architecture Technical Field The present invention relates to a method for accessing a communication or collar, and in particular, relates to a 3GPP (The 3 rd Generation Partnership Project , the third mobile communication ^ ^ Partnership Project) proposed Multimedia Broadcast Multicast Service (MBMS) access method under the Long Time Evolution (LTE) architecture. BACKGROUND OF THE INVENTION With the development of flat network architectures and the emergence of multiple high-speed broadband mobile access methods, an evolved wireless communication system can provide higher transmission rates, shorter transmission delays, and lower costs. Supporting mobility between 3GPP internal access systems and mobility between 3GPP access systems and non-3GPP access systems, etc., prompting mobile communication networks to propose LTE/SAE (System Architecture Evolution) A ^ ^ architecture concept. At present, the SAE truss is shown in Figure 1. The network elements are:
EUTRAN ( Evolved UTRAN, 演进的无线接入网）： 是下一代的无线接 入网， 可以提供更高的上下行速率、 更低的传输延迟、 和更加可靠的无线传 输。 EUTRAN (Evolved UTRAN): A next-generation wireless access network that provides higher uplink and downlink rates, lower transmission delays, and more reliable wireless transmission.
MME ( Mobility Management Entity ): 控制面功能实体， 负责管理和存 储 UE ( User Equipment, 用户设备 ) 上下文（比如 UE标识、 移动性管理状 态、 用户安全参数等）、 为用户分配临时标识、 当 UE驻扎在该跟踪区域或者 该网络时负责对该用户进行鉴权。 MME (Mobility Management Entity): Control plane function entity, responsible for managing and storing UE (User Equipment) context (such as UE identity, mobility management status, user security parameters, etc.), assigning temporary identifiers to users, and locating UEs. It is responsible for authenticating the user in the tracking area or the network.
SAE GW:用户面功能实体，用户面数据路由处理，分为 Serving和 PDN (外部数据网络） 两种。 Serving SAE GW是 SAE系统与传统 3 GPP系统间 的移动锅点以及 e-Node B之间的移动锅点； PDN SAE GW: 终结处于闲置状 态的 UE的下行数据， 当发往 UE的下行数据到达时， 发起寻呼， 管理和存 储 UE的上下文， 比如 IP承载业务参数和网络内部路由信息等。 SAE GW: User plane function entity, user plane data routing processing, divided into Serving and PDN (external data network). Serving SAE GW is the mobile pot point between the SAE system and the traditional 3 GPP system and the mobile pot point between the e-Node B; PDN SAE GW: terminates the downlink data of the UE in idle state, when the downlink data sent to the UE arrives At the same time, paging is initiated, and the context of the UE, such as IP bearer service parameters and network internal routing information, is managed and stored.
LTE/SAE网络作为 PDN的接入和承载网络， 具有激活、 维护、 去活承 载的功能， 以及为移动用户持续提供数据业务的切换功能。 为了适应未来移动通信的发展， 3GPP 提出在 SAE/LTE 架构上采用 MBMS ( Multimedia Broadcast Multicast Service, 多媒体广播多播业务 )„ 而基于 WCDMA ( Wideband Code Division Multiple Access , 宽 4弋码分 多址）系统的 MBMS架构和基于 SAE/LTE系统的 MBMS架构有艮大的区别。 WCDMA 系统中， MBMS 业务仍然涉及到 RNC ( Radio NetworkAs an access and bearer network of the PDN, the LTE/SAE network has the functions of activating, maintaining, and deactivating bearers, and continuously providing data services for mobile users. In order to adapt to the future development of mobile communication, 3GPP proposes to use MBMS (Multimedia Broadcast Multicast Service) on the SAE/LTE architecture and based on WCDMA (Wideband Code Division Multiple Access) system. There is a big difference between the MBMS architecture and the MBMS architecture based on the SAE/LTE system. In the WCDMA system, the MBMS service still involves the RNC (Radio Network).
Controller, 无线网络控制器）， 这是因为 MBMS作为一种点对多点的业务， 要求下游 Node B (基站） 进行同步， 以满足用户在接收来自多个基站 /小区 的相同的 MBMS业务时， 可以进行物理层的数据合并， 以便提高 MBMS业 务的接收效果。 同时， RNC还兼有资源调度等功能， 以实现多个 MBMS业 务在 RNC 以及下属基站的业务数据传输， 进行合理的资源分配和调度， 实 现无线资源的优化。 对于 SAE/LTE系统的 MBMS来说，需要类似的一个实体来实现节点同 步、 资源协调等功能。 为此， 3GPP提出在 SAE/LTE架构中引入 MBMS-GW 還辑实体， 这个实体作为 BM-SC ( Broadcast and multicast Service Center, 广 播多播业务中心）和 e-Node B之间的一个节点， 是网络的接入网关， 负责处 理用户数据相关的报文和会话相关的信令， 不涉及无线网络参数， 同时还可 以实现 MBMS-GW与 e-Node B之间的同步。 BM-SC与内容服务商 /组播广 播源（ Content Provider/Multicast Broadcast Source ) 目连接， 完成数据的汇聚。 另夕卜， 还引入 MCE ( MBMS Coordination Entity , 多媒体广播多播业务协调 功能实体）， 以实现 e-Node Β的无线资源协调功能。 具体地说， 在 LTE MBMS 中 MCE的引入与 MBSFN ( MBMS Single Frequency Network , MBMS单频网络） 4既念相关： Controller, radio network controller), because MBMS, as a point-to-multipoint service, requires downstream Node Bs (base stations) to synchronize to meet the same MBMS service when users receive multiple base stations/cells. Data integration at the physical layer can be performed to improve the reception of the MBMS service. At the same time, the RNC also has functions such as resource scheduling to implement service data transmission of multiple MBMS services in the RNC and subordinate base stations, and perform reasonable resource allocation and scheduling to optimize radio resources. For the MBMS of the SAE/LTE system, a similar entity is needed to implement functions such as node synchronization and resource coordination. To this end, 3GPP proposes to introduce an MBMS-GW re-enactment entity in the SAE/LTE architecture. This entity acts as a node between the BM-SC (Broadcast and Multicast Service Center) and the e-Node B. The access gateway of the network is responsible for processing user data related messages and session related signaling, does not involve wireless network parameters, and can also implement synchronization between MBMS-GW and e-Node B. The BM-SC is connected to the Content Provider/Multicast Broadcast Source to complete data aggregation. In addition, MCE (MBMS Coordination Entity) is also introduced to implement the radio resource coordination function of the e-Node. Specifically, the introduction of MCE in LTE MBMS is related to MBSFN (MBMS Single Frequency Network) 4:
MBSFN同步区： 一个 MBSFN同步区内的所有基站能够进行同步， 并 执行 MBSFN传输， MBSFN同步区支持一个或多个 MBSFN区。在一个给定 的频率层上，一个基站仅属于一个 MBSFN同步区。 MBSFN同步区与 MBMS 业务区无关。 MBSFN sync area: All base stations in a MBSFN sync area can synchronize and perform MBSFN transmission. The MBSFN sync area supports one or more MBSFN areas. At a given frequency level, a base station belongs to only one MBSFN sync area. The MBSFN sync area is independent of the MBMS service area.
MBSFN传输： 同时从多个小区传输相同的波形， 在 MBSFN区上进行 的 MBSFN传输可以被用户看作为来自同一个源的传输。 MBSFN transmission: Simultaneous transmission of the same waveform from multiple cells, MBSFN transmission on the MBSFN area can be seen by the user as transmission from the same source.
MBSFN区： 一个 MBSFN区包含在 MBSFN同步区内的一组小区， 这 些小区可以进行 MBSFN 传输。 MBSFN 同步区内的一个小区可以是多个 MBSFN 区的一部分， 而每一个 MBSFN 区可以通过不同的传输内容和参与 的小区力口以区分。 这些概念的引入使得在 SAE/LTE中的 MBMS业务传输可以分为两类： 一类是 MBSFN传输， 另一类为非 MBSFN传输。 相应于 MBSFN传输， 其 MBSFN区实际上是可以才艮据用户位置和数量来 调整自身大小的一个区域， 它可以是静态的， 也可以是动态的， 根据业务的属性加以设置。 对于某个 MBMS业务， MCE需要为其选择合适的资源， 包括频率、 时间等参数等， 构建合适的 MBSFN, 进行 MBSFN传输； 对于多个 MBMS业务， MCE需 要协调其相应的多个 MBSFN传输， 包括 MBSFN区域大小， 无线资源的使 用等， 以便能够合理的， 高效的使用资源。 基于上述 SAE/LTE中 MBMS的特点，各个厂商和运营商都提出了相应 的 LTE MBMS架构的解决方案。 当前的两种重要方案是： ( 1 ) NTT DoCoMo, T-Mobile, Orange等支持 的， 由 NSN提出的 Lightweight架构 （图 2所示）； ( 2 ) Ericsson提出的 LTE MBMS架构 （图 3所示）。 然而， 目前对于两种架构下的 MBMS接入还没有一个确定的方法。 发明内容 考虑到目前缺少 LTE MBMS架构下的 MBMS接入方法的问题而提出本 发明， 为此， 本发明旨在提供一种 LTE架构下的 MBMS接入方法。 才艮据本发明的 LTE架构下的 MBMS接入方法包括： 广播多播中心向多 媒体广播多播业务网关发送会话开始消息； 多媒体广播多播业务网关分配用 户面资源和 IP组播地址，并向多媒体广播多播业务协调功能实体发送会话开 始消息； 多媒体广播多播业务协调功能实体进行无线资源的协调决策， 并向 e-Node B发送会话开始消息； e-Node B加入组播组。 其中，广播多播中心向多媒体广播多播业务网关发送的会话开始消息中 可以包含是否进行无线资源协调的指示信息。 这样， 多媒体广播多播业务协 调功能实体根据指示信息进行无线资源的协调决策。 或者， 多媒体广播多播 业务协调功能实体根据小区配置自行进行无线资源的协调决策。 多媒体广播多播业务网关向多媒体广播多播业务协调功能实体发送的 会话开始消息中包含 IP组播地址。 相应地， e-Node B力。入 IP组播地址所对 应的组播组。 另夕卜， 多媒体广播多播业务协调功能实体向 e-Node B发送的会话开始 消息中包含无线资源协调结果。 通过本发明提供的 LTE/SAE架构下 MBMS的接入方法， 当 MCE作为 還辑实体附着于 MBMS-GW 实体上时， 两种架构较好地融合在一起， 从而 有利于运营商的建网需求，在满足 LTE/SAE架构需求下，较好地提供 MBMS。 本发明的其它特征和优点将在随后的说明书中阐述， 并且， 部分地从说 明书中变得显而易见， 或者通过实施本发明而了解。 本发明的目的和其他优 点可通过在所写的说明书、 权利要求书、 以及附图中所特别指出的结构来实 现和获得。 附图说明 附图用来提供对本发明的进一步理解， 并且构成说明书的一部分， 与本 发明的实施例一起用于解释本发明， 并不构成对本发明的限制。 在附图中： 图 1是根据现有技术的 SAE架构的示意图； 图 2是才艮据现有技术的基于 SAE/LTE网络架构的 MBMS( Lightweight ) 架构示意图； 图 3是根据现有技术的基于 SAE/LTE网络架构的 MBMS架构示意图； 以及 图 4是才艮据本发明实施例的 LTE架构下 MBMS的接入方法的流程图。 具体实施方式 以下结合附图对本发明的优选实施例进行说明， 应当理解， 此处所描述 的优选实施例仅用于说明和解释本发明， 并不用于限定本发明。 本发明实施例提供了一种 LTE架构下的 MBMS接入方法。 其中， 下文 中提到的多媒体广播多播业务协调功能实体（ MCE )可以看作一个逻辑实体， 具体是否独立出一个物理实体取决于运营商的要求。 口图 4所示， 该方法包括以下处理： 步骤 S402 , 广播多播中心 （BM-SC ) 向多媒体广播多播业务网关 ( MBMS-GW ) 发送会话开始消息 （或者称为 MBMS 会话开始消息， 其中 可以包含是否进行无线资源协调的指示信息）； 步骤 S404 , MBMS-GW分配用户面资源和 IP组播地址， 并向多媒体广 播多播业务协调功能实体（MCE )发送会话开始消息， 该会话开始消息除了 包含 BM-SC发送的消息中的消息内容外， 还包含 IP组播地址； 步骤 S406, MCE进行无线资源的协调决策， 并向 e-Node B ( eNB )发 送会话开始消息； 如果会话开始消息中携带了指示信息， 则 MCE根据该指 示信息进行无线资源的协调决策； 如果会话开始消息中没有携带指示信息， 贝l MCE根据小区配置自行进行无线资源的协调决策； 步骤 S408 , e-Node B力。入 IP组播地址对应的组播组。 另夕卜， 在步骤 S406中发送的会话开始消息中包含无线资源协调结果。 通过本发明提供的 LTE/SAE架构下 MBMS的接入方法， 当 MCE作为 還辑实体附着于 MBMS-GW 实体上时， 两种架构较好地融合在一起， 从而 有利于运营商的建网需求，在满足 LTE/SAE架构需求下，较好地提供 MBMS。 以上所述仅为本发明的优选实施例而已， 并不用于限制本发明， 对于本 领域的技术人员来说， 本发明可以有各种更改和变化。 凡在本发明的精神和 原则之内， 所作的任何修改、 等同替换、 改进等， 均应包含在本发明的保护 范围之内。 MBSFN area: One MBSFN area contains a group of cells in the MBSFN synchronization area, and these cells can perform MBSFN transmission. One cell in the MBSFN synchronization area can be multiple Part of the MBSFN area, and each MBSFN area can be distinguished by different transmission content and participating cell power ports. The introduction of these concepts enables MBMS service transmission in SAE/LTE to be divided into two categories: one is MBSFN transmission and the other is non-MBSFN transmission. Corresponding to the MBSFN transmission, the MBSFN area is actually an area that can adjust its own size according to the location and number of users. It can be static or dynamic, and is set according to the attributes of the service. For a certain MBMS service, the MCE needs to select the appropriate resources, including parameters such as frequency and time, to construct an appropriate MBSFN for MBSFN transmission. For multiple MBMS services, the MCE needs to coordinate its corresponding multiple MBSFN transmissions, including MBSFN area size, use of wireless resources, etc., in order to be able to use resources reasonably and efficiently. Based on the characteristics of MBMS in SAE/LTE mentioned above, various vendors and operators have proposed corresponding LTE MBMS architecture solutions. The two current important solutions are: (1) NTT DoCoMo, T-Mobile, Orange and other supported Lightweight architectures proposed by NSN (shown in Figure 2); (2) Ericsson's proposed LTE MBMS architecture (Figure 3 ). However, there is currently no definitive method for MBMS access in both architectures. SUMMARY OF THE INVENTION The present invention has been made in view of the current problem of lacking an MBMS access method under the LTE MBMS architecture. To this end, the present invention aims to provide an MBMS access method in an LTE architecture. The MBMS access method in the LTE architecture according to the present invention includes: the broadcast multicast center sends a session start message to the multimedia broadcast multicast service gateway; the multimedia broadcast multicast service gateway allocates the user plane resource and the IP multicast address, and The multimedia broadcast multicast service coordination function entity sends a session start message; the multimedia broadcast multicast service coordination function entity performs a coordinated decision of the radio resources, and sends a session start message to the e-Node B; the e-Node B joins the multicast group. The session start message sent by the broadcast multicast center to the multimedia broadcast multicast service gateway may include indication information about whether to perform radio resource coordination. In this way, the multimedia broadcast multicast service coordination function entity performs coordinated decision of the wireless resource according to the indication information. Alternatively, the multimedia broadcast multicast service coordination function entity performs the coordinated decision of the wireless resource according to the cell configuration. The session start message sent by the multimedia broadcast multicast service gateway to the multimedia broadcast multicast service coordination function entity includes an IP multicast address. Accordingly, the e-Node B force. Enter the multicast group corresponding to the IP multicast address. In addition, the session start message sent by the multimedia broadcast multicast service coordination function entity to the e-Node B includes the radio resource coordination result. With the access method of the MBMS in the LTE/SAE architecture provided by the present invention, when the MCE is attached to the MBMS-GW entity as the retrieving entity, the two architectures are well integrated, thereby facilitating the network construction requirements of the operator. In order to meet the LTE/SAE architecture requirements, MBMS is better provided. Other features and advantages of the invention will be set forth in the description which follows, and The objectives and other advantages of the invention will be realized and attained by the <RTI The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawings: FIG. 1 is a schematic diagram of an SAE architecture according to the prior art; FIG. 2 is a schematic diagram of an MBMS (Lightweight) architecture based on the SAE/LTE network architecture according to the prior art; FIG. 3 is a schematic diagram of an MBMS (Lightweight) architecture according to the prior art; Schematic diagram of an MBMS architecture based on the SAE/LTE network architecture; and FIG. 4 is a flowchart of an MBMS access method in an LTE architecture according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention are described with reference to the accompanying drawings. An embodiment of the present invention provides an MBMS access method in an LTE architecture. The multimedia broadcast multicast service coordination function entity (MCE) mentioned below can be regarded as a logical entity. Whether a physical entity is independent or not depends on the requirements of the operator. As shown in FIG. 4, the method includes the following processing: Step S402: A Broadcast Multicast Center (BM-SC) sends a session start message (or an MBMS session start message to the Multimedia Broadcast Multicast Service Gateway (MBMS-GW), where The indication information of whether to perform radio resource coordination may be included); Step S404, the MBMS-GW allocates the user plane resource and the IP multicast address, and sends a session start message to the multimedia broadcast multicast service coordination function entity (MCE), the session start message In addition to the content of the message in the message sent by the BM-SC, the IP multicast address is also included; Step S406, the MCE performs a coordinated decision on the radio resource, and sends a session start message to the e-Node B (eNB); The MCE carries the indication information, and the MCE performs the coordinated decision of the radio resource according to the indication information. If the session start message does not carry the indication information, the MCE performs the coordinated decision of the radio resource according to the cell configuration; Step S408, e-Node B force. Enter the multicast group corresponding to the IP multicast address. In addition, the session start message sent in step S406 includes the radio resource coordination result. With the access method of the MBMS in the LTE/SAE architecture provided by the present invention, when the MCE is attached to the MBMS-GW entity as the retrieving entity, the two architectures are well integrated, thereby facilitating the network construction requirements of the operator. In order to meet the LTE/SAE architecture requirements, MBMS is better provided. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

权 利 要 求 书 Claim
1. 一种长期演进架构下的多媒体广播多播业务接入方法， 其特征在于， 包 括： A multimedia broadcast multicast service access method in a long-term evolution architecture, which is characterized by:
广播多播中心向多媒体广播多播业务网关发送会话开始消息； 所述多媒体广播多播业务网关分配用户面资源和 IP组播地址， 并 向多媒体广播多播业务协调功能实体发送所述会话开始消息；  The broadcast multicast center sends a session start message to the multimedia broadcast multicast service gateway; the multimedia broadcast multicast service gateway allocates a user plane resource and an IP multicast address, and sends the session start message to the multimedia broadcast multicast service coordination function entity. ;
所述多媒体广播多播业务协调功能实体进行无线资源的协调决策， 并向 e-Node B发送所述会话开始消息；  The multimedia broadcast multicast service coordination function entity performs a coordinated decision of the radio resource, and sends the session start message to the e-Node B;
所述 e-Node B力口入组播组。  The e-Node B is in the multicast group.
2. 根据权利要求 1所述的方法， 其特征在于， 所述广播多播中心向所述多 媒体广播多播业务网关发送的所述会话开始消息中包含是否进行无线资 源协调的指示信息。 The method according to claim 1, wherein the session start message sent by the broadcast multicast center to the multimedia broadcast multicast service gateway includes indication information of whether to perform radio resource coordination.
3. 根据权利要求 2所述的方法， 其特征在于， 所述多媒体广播多播业务协 调功能实体才艮据所述指示信息进行所述无线资源的协调决策。 The method according to claim 2, wherein the multimedia broadcast multicast service coordination function entity performs the coordinated decision of the wireless resource according to the indication information.
4. 根据权利要求 1所述的方法， 其特征在于， 所述多媒体广播多播业务协 调功能实体根据小区配置自行进行所述无线资源的协调决策。 The method according to claim 1, wherein the multimedia broadcast multicast service coordination function entity performs the coordinated decision of the wireless resource according to the cell configuration.
5. 根据权利要求 1所述的方法， 其特征在于， 所述多媒体广播多播业务网 关向所述多媒体广播多播业务协调功能实体发送的所述会话开始消息中 包含所述 IP组播地址。 The method according to claim 1, wherein the multimedia start multicast service gateway includes the IP multicast address in the session start message sent by the multimedia broadcast multicast service coordination function entity.
6. 才艮据权利要求 5所述的方法， 其特征在于， 所述 e-Node B加入所述 IP 组播地址所对应的组播组。 The method according to claim 5, wherein the e-Node B joins the multicast group corresponding to the IP multicast address.
7. 根据权利要求 1所述的方法， 其特征在于， 所述多媒体广播多播业务协 调功能实体向所述 e-Node B 发送的所述会话开始消息中包含无线资源 协调结果。 The method according to claim 1, wherein the multimedia start coordination message sent by the multimedia broadcast multicast service coordination function entity to the e-Node B includes a radio resource coordination result.
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