CN100387071C - Method for realizing multimedia broadcast and multi cast service by air interface - Google Patents

Method for realizing multimedia broadcast and multi cast service by air interface Download PDF

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CN100387071C
CN100387071C CN 200410059972 CN200410059972A CN100387071C CN 100387071 C CN100387071 C CN 100387071C CN 200410059972 CN200410059972 CN 200410059972 CN 200410059972 A CN200410059972 A CN 200410059972A CN 100387071 C CN100387071 C CN 100387071C
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data
multimedia
air interface
mac
broadcast
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CN1716830A (en
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楚东雨
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华为技术有限公司
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Abstract

本发明公开了一种通过空中接口实现多媒体广播多播业务的方法,该方法首先设置包括RLC、MAC和PHY的空中接口用户面结构,基于该空中接口用户面结构,RNC在将多媒体广播数据发送给UE时,首先通过多媒体业务数据中继将SGSN发送来的多媒体广播数据复制到多媒体广播多播业务区包含的每个小区所对应的所有RLC;RLC处理多媒体广播数据,并通过CTCH将其发送给MAC,MAC处理收到的多媒体广播数据,并将处理后的多媒体广播数据发送给Node B,Node B通过空中接口将收到的多媒体广播数据发送出去;UE接收Node B通过空中接口发送的多媒体广播数据。 The present invention discloses a method for implementing multimedia broadcast multicast service via an air interface, which first sets the air interface user plane structure including RLC, MAC and the PHY, the air interface user plane based on the structure, the RNC transmits the multimedia broadcasting data when to the UE, the first multimedia service by copying the data relay SGSN multimedia broadcasting data transmitted to all RLC MBMS service area contained in each cell corresponding; RLC processing multimedia broadcast data, and sends it through the CTCH to the MAC, the MAC processing multimedia broadcast data received multimedia broadcast and transmits the processed data to the Node B, Node B multimedia broadcasting data received through the air interface sent; multimedia Node B receives the UE transmitted over the air interface broadcast data. 本发明解决了目前不能通过现有逻辑信道广播多媒体广播数据的问题。 The present invention solves the problem currently existing logical channel is not broadcast multimedia broadcast data. 本发明所提供的方案实现了通过现有逻辑信道广播多媒体广播数据。 The present invention provides a solution achieved by conventional multimedia broadcast data broadcast logical channel.

Description

一种通过空中接口实现多媒体广播多播业务的方法 A method for implementing multimedia broadcast multicast service over the air interface of

技术领域 FIELD

本发明涉及多媒体广播多播(MBMS)业务技术领域,更确切地说是涉及一种通过空中接口实现多媒体广播多播业务的方法。 The present invention relates to a multimedia broadcast multicast (MBMS) service technology, and more specifically relates to a method for implementing multimedia broadcast multicast service over the air interface is.

背景技术 Background technique

第三代移动通讯的广播业务包括小区广播业务(CBS)和MBMS。 Third generation mobile communications including broadcast service cell broadcast service (CBS), and MBMS. 随着多媒体技术的发展,在业务内容上包括视频、音频、图片及文字等信息的MBMS越来越多地被用户关注。 With the development of multimedia technology in the business content including video, audio, pictures and text information such as MBMS increasingly concerned about the user.

这两种广播业务都要求通用移动通信系统的地面无线接入网(UTRAN) 和用户设备(UE)之间使用单点到多点的业务承载,其中,UTRAN包括无线网络控制器(RNC)和基站(NodeB)。 Using a single bearer service between the two multipoint broadcast service require Universal Mobile Telecommunications System Terrestrial Radio Access Network (UTRAN) and User Equipment (UE), wherein, UTRAN comprises a radio network controller (RNC) and The base station (NodeB). 对于目前的CBS来说,CBS的应用层分别位于小区广播中心(CBC)和UE,小区广播业务数据需要通过Iu-BC接口以及空中接口(Uu)进行传输。 For the current for CBS, CBS application layer are located in the cell broadcast center (CBC) and the UE, cell broadcast service data to be transmitted through Iu-BC interface and the air interface (Uu). 具体来说,参见图1, CBC与UTRAN中的RNC通过业务区广播协议(SABP )消息进行通讯,即CBC中的小区广播业务数据通过SABP消息从Iu-BC接口发送到RNC, RNC中的广播多播控制(BMC)从收到的SABP消息获得小区广播业务数据以及相关的信息,将这些信息组装为BMC消息,并以一定的周期通过公共业务信道(CTCH )在Uu重复广播该BMC消息。 In particular, referring to FIG. 1, the CBC and the RNC in the UTRAN through the communication service area broadcast protocol (SABP) message, i.e., the CBC the cell broadcast service data transmitted by the interface from the Iu-BC SABP message to RNC, the RNC broadcasts multicast control (BMC) obtaining a cell broadcast service data and related information from the SABP messages received, the information is assembled into a BMC message and to a certain cycle repeatedly broadcasted the BMC message Uu through a common traffic channel (CTCH). BMC只有再次从CBC收到SABP 消息时,才停止重复广播原有的BMC消息,并对新收到的SABP消息进行处理。 BMC only if the CBC received a message from SABP only stop repeating the original broadcast of BMC message again, and the newly received message is processed SABP.

在图l所示的协议栈中,CBC与RNC之间没有专门用于承载小区广播业务数据的用户面,需要BMC通过SABP消息传递小区广播业务数据,这种消息通讯机制的实时性较差,只适合传递短消息,而不适合传递如流业务等实时性要求较高的业务。 In the protocol stack shown in Figure l, between the CBC and the RNC is not dedicated to a user plane data bearer cell broadcast service, transmitting a cell broadcast service requires BMC SABP data message, such poor real-time message communication mechanism, only for short message delivery, not suitable for high transmission services such as streaming services like real-time requirement. 且SABP消息最大只能携带长度为1230字节的小区广播业务数据,不适合传递信息量很大的多媒体业务。 And SABP message carries only the maximum length of 1230 bytes of data cell broadcast service, a great amount of information transmitted is not suitable for multimedia service. 另外,小区广播业务的空口用户面结构中包括了用于组装并广播BMC消息的BMC实体, 由于BMC消息的长度有限,而且BMC中诸如存储、重发等机制会引入相当的时延,不能满足高实时性业务的要求,因此,包含BMC实体的CBS用户面结构不能满足流业务特征的多媒体广播多播业务的速率与实时性的要求。 Further, the air interface user plane configuration of the cell broadcast service is included in the BMC entity for assembling and broadcast of BMC messages, due to the limited length of BMC messages, such as a storage medium and BMC, retransmission mechanisms can introduce a considerable delay, can not meet the high rate requirement real-time services, therefore, CBS structure comprising a user plane entity does not meet BMC traffic flow characteristics multimedia broadcast multicast service and real-time requirements. 所以说,针对CBS的用户面结构及协议栈不适合用于广播视频、音频等流业务特征的多媒体消息。 Therefore, the stack structure for the CBS and user plane protocols are not suitable for multimedia message broadcast video, audio, traffic flow characteristics.

为实现多媒体广播,目前业界提出了用于发送多媒体消息的多媒体广播用户面结构,该结构如图2所示,多媒体广播多播业务的应用层分别分布在广播多播业务中心(BM-SC)及UE中,网关通用分组无线服务(GPRS) 支持节点(GGSN )、业务GPRS支持节点(SGSN )和UTRAN等位于BM-SC 和UE之间,这些实体完成多媒体广播多播业务数据的透明转发。 To achieve the multimedia broadcasting, the industry proposed multimedia broadcast user plane for transmitting a multimedia message structure, the structure as shown in FIG MBMS service application layer 2 are distributed in a broadcast multicast service center (BM-SC) and the UE, a gateway general packet radio service (GPRS) support node (the GGSN), service GPRS support node (SGSN) and the like positioned between the UTRAN and BM-SC UE, complete these entities transparent forwarding MBMS service data. 其中,多媒体广播多播业务空口用户面结构由图3所示的MTCH协议结构确定。 Wherein multimedia broadcast multicast service air interface user plane determined by the structure MTCH protocol structure shown in FIG.

MBMS协议为多媒体广播多播业务专门定义了两个逻辑信道:MBMS 控制信道(MCCH)和MBMS业务信道(MTCH),其中,MCCH用于承载MTCH的配置信息及与业务相关的控制信息,MTCH则用于承栽广播业务数据。 MBMS protocol for multimedia broadcast multicast service defines two logical channels specifically: MBMS Control Channel (MCCH) and MBMS Traffic Channel (MTCH), wherein, MCCH configuration information for the MTCH carrying the service and related control information, the MTCH Cheng planted for broadcast service data. MCCH的配置信息由广播控制信道(BCCH)承载。 MCCH configuration information is carried by a broadcast control channel (BCCH). MTCH的协议结构具体包括分组数据控制协议(PDCP) 、 RLC、 MAC及PHY等子层, 该协议结构参见图3。 The MTCH protocol architecture comprises a packet data control protocol (PDCP), RLC, MAC and PHY sublayers like, see FIG. 3 of the protocol structure.

图3中的PDCP主要用于完成MBMS业务的头压缩/解压缩功能,在UTRAN侧,每个MBMS小区组的MBMS业务对应一个PDCP;在UE側, 每个MBMS业务对应一个PDCP实体。 FIG. 3 is mainly used to MBMS services PDCP header compression / decompression function, the UTRAN side, the MBMS service corresponding to each MBMS cell group of a PDCP; at the UE side, each MBMS service corresponding to a PDCP entity. UTRAN侧的PDCP还要将处理得到的PDCP协议数据单元复制到该小区组中所有小区的RLC实体。 Also the UTRAN side PDCP processing PDCP protocol data units obtained copied to all the cells in the cell group RLC entity. 对于RLC 来说,在UTRAN侧,每个小区的每个MBMS业务对应一个RLC实体;在UE侧,每个MBMS业务也对应一个RLC实体。 For the RLC, in the UTRAN side, each MBMS service of each cell corresponds to one RLC entity; at the UE side, each MBMS service also corresponds to one RLC entity. 对于MAC For MAC

側,每个小区对应一个MAC实体;在UE侧,每个UE则对应一个MAC实体。 Side, each cell corresponding to a MAC entity; at the UE side, each UE corresponds a MAC entity.

基于图3所示的MTCH协议结构,在通过空口广播多媒体广播数据时, 也即UTRAN通过空口将BM-SC依次经GGSN、 SGSN发送来的多媒体广播数据广播到UE时,其中的多媒体数据中继首先将SGSN发送来的多媒体广播数据转发给自身的PDCP, PDCP对收到的数据进行头压缩处理,并将处理后的数据复制到小区组中所有小区的RLC实体。 Based MTCH protocol structure shown in FIG. 3, when the air interface a broadcast multimedia broadcasting data, multimedia broadcast data broadcasting i.e. the UTRAN air interface the BM-SC sequentially via GGSN, SGSN transmitted to the UE, wherein the multimedia data relaying first SGSN forwards the transmitted data to the multimedia broadcast its own PDCP, PDCP performs header of the received data compression processing, and processing to copy data cells of the cell group, all RLC entity. RLC和MAC等实体在对该数据进行处理后,将该数据发送给位于Node B的物理层(PHY), 由Node B通过该PHY将该数据发送出去。 RLC and MAC entities, etc. After processing the data, transmits the data to the physical layer is located in Node B's (PHY), the Node B transmits the PHY out through the data. UE在接收数据时,首先由UE 中的PHY接收NodeB通过空口发送出来的数据,并依次交付给MAC、RLC、 PDCP等上层协议实体处理,与RNC中PDCP进行的头压缩处理对应,UE 中的PDCP需要对收到的数据进行解压缩处理。 When the UE receives data, first received by the UE PHY NodeB data sent out by the air interface, and sequentially delivered to the MAC, RLC, PDCP and other upper-layer protocol entity processing head with the RNC PDCP compression processing corresponding to, the UE PDCP need to decompress the data received treatment.

如上所迷,在MTCH协议结构中设置PDCP的一个作用就是对PDCP 数据包的IP头进行压缩,以减小PDCP包的长度。 As fans, provided in the PDCP protocol structure MTCH is to effect a data packet PDCP IP header compression to reduce the length of the PDCP packet. 这样虽然可以节省一些传输资源,但增加了数据处理的复杂度与处理时延。 While this can save transmission resources, but increases the complexity and processing delay data processing. 而且该方案需要UE側也支持PDCP,以对收到的数据包进行解压缩,这样就增加了UE侧的实现复杂度。 Also this solution requires the PDCP supports the UE side, receiving data packets to be decompressed, thus increasing the implementation complexity of the UE side.

另外,由于MAC协议定义的MAC c/sh不支持MTCH,因此需要在原有MAC c/sh的基础上增加支持MTCH的MAC-m。 Further, since the MAC protocol defined MAC c / sh MTCH is not supported, it is necessary to increase the MTCH support MAC-m in the original MAC c / sh on. 这样,MTCH的协议结构就同时包括了PDCP和MAC-m,而这个协议结构与现有的所有逻辑信道结构都不同,因此无法使用现有的逻辑信道实现MTCH的功能,必须在现有的逻辑信道结构中同时引入PDCP和MAC-m。 Thus, on the MTCH protocol architecture includes both PDCP and MAC-m, and the protocol structure of the conventional structure of all the logical channels are different, can not be achieved using conventional MTCH logical channel functions, the conventional logic must channel structure introduced simultaneously PDCP and MAC-m. 另外,MTCH的配置信息需要通过MCCH进行配置,因此还需要在现有的Uu结构中引入MCCH, 同时还要在BCCH中增加MCCH的配置信息,才能实现多媒体广播多播业务,这样,就要对现有的Uu结构作较大的改动。 In addition, MTCH configuration information needs to be configured through the MCCH, it is also necessary to introduce MCCH Uu existing structure, while also increasing the configuration information of MCCH in the BCCH, in order to achieve multimedia broadcast multicast service, so, it is necessary to Uu conventional configuration for larger changes.

也就是说,MBMS协议定义的MTCH以及MCCH基于现有的空中接口 In other words, MBMS protocol defined MTCH and MCCH based on existing air interface

结构无法实现,而且现阶段MBMS协议尚未成熟,比较不完备,根据目前的MBMS协议实现多媒体广播多播业务的难度较大,需要对现有结构作较多的改动。 Structure can not be achieved, but at this stage MBMS protocol is not yet mature, relatively incomplete, difficult to implement multimedia broadcast multicast service of a larger, need to make more changes to the existing structure of the current MBMS protocol.

发明内容 SUMMARY

有鉴于此,本发明的主要目的在于提供一种通过空中接口实现多媒体广播多播业务的方法,以通过现有的逻辑信道实现多媒体广播。 In view of this, the main object of the present invention is to provide a method for multimedia broadcast multicast services implemented over an air interface, to enable existing multimedia broadcast logical channel.

为达到以上目的,本发明的技术方案是这样实现的: 一种通过空中接口实现多媒体广播多播业务的方法,广播多播业务中心BM-SC中的多媒体广播数据依次通过网关通用分组无线服务支持节点GGSN、业务通用分组无线服务支持节点SGSN和无线网络控制器RNC进行处理,并由RNC通过空中接口发送给用户设备UE,该方法包括:设置包括无线链路控制RLC、媒体访问控制MAC和物理层PHY的空中接口用户面结构; To achieve the above object, the technical solution of the present invention is implemented as follows: A method for implementing multimedia broadcast multicast traffic over the air interface, the broadcast multimedia broadcast multicast service center BM-SC data are sequentially via a gateway general packet radio service support the GGSN node, service general packet radio service processing support node SGSN and the radio network controller RNC, by the RNC to the user equipment UE over the air interface, the method comprising: setting the RLC includes a radio link control, media access control MAC and physical PHY layer air interface user plane structure;

基于该空中接口用户面结构,所述RNC通过空中接口将多媒体广播数据发送给UE包括以下步骤: Air interface user plane based on the structure, the RNC transmits the multimedia broadcasting data over the air interface to the UE comprises the steps of:

a. RNC通过多媒体业务数据中继将SGSN发送来的多媒体广播数据复制到多媒体广播多播业务区包含的每个小区所对应的所有RLC; . A RNC by copying the multimedia service data transmitted to a relay SGSN multimedia broadcast data to all RLC MBMS service area contained in each cell corresponding to;

b. RLC处理收到的多媒体广播数据,并通过CTCH将处理后的多媒体广播数据发送给MAC, MAC对收到的多媒体广播数据进行处理,并将处理后的多媒体广播数据发送给基站Node B, Node B通过空中接口将收到的多媒体广播数据发送出去; b. RLC processing the received multimedia broadcasting data, and multimedia broadcasting data through CTCH to transmit the processed MAC, MAC multimedia processes the received broadcast data, and transmits the processed multimedia broadcasting data to the base station Node B, Node B sent multimedia broadcast data received via the air interface;

c. UE接收Node B通过空中接口发送的多媒体广播数据。 c. UE receives Node B multimedia broadcasting data transmitted over the air interfaces.

所述设置包括RLC、 MAC和PHY的空中接口用户面结构为:在空中接口用户面结构的UE侧设置RLC、 MAC及PHY,在RNC侧设置RLC和MAC,在Node B侧设置PHY。 The setting comprises RLC, MAC and PHY air interface user plane structure: UE RLC side air interface user plane in the structure, PHY and MAC, RLC and MAC disposed on the RNC side, the PHY Node B side is provided.

所述步骤b中,所述MAC将处理后的多媒体广播数据发送给Node B 为:MAC将处理后的多媒体广播数据发送给位于Node B的PHY; Step b, the multimedia broadcast MAC processed data is transmitted to the Node B: multimedia broadcast MAC processed data is sent to the Node B is located in a PHY;

步骤c中,所述UE接收NodeB发送来的广播数据为:UE通过自身的PHY接收Node B发送的广播数据。 In step c, the UE receives broadcast data transmitted by the NodeB as: UE receives Node B transmits broadcast data through its own PHY.

所述步骤c之后进一步包括:UE依次通过自身的MAC和RLC对收到的多媒体广播数据进行处理。 After said step c further comprising: UE sequentially received multimedia broadcast data is processed through its own MAC and RLC.

该方法可以进一步包括:将GGSN与SGSN之间的接口设置为通用分组无线服务隧道协议GTP隧道承载。 The method may further comprise: an interface disposed between the GGSN and the SGSN for the General Packet Radio Service Tunneling Protocol (GTP) tunnel bearer.

该方法还可以进一步包括:将SGSN与RNC之间的接口设置为GTP隧道承载。 The method may further comprise: an interface disposed between the SGSN and the RNC is a GTP tunnel bearer.

本发明方案通过提供基于CTCH的多媒体广播空口用户面结构,使在实现多媒体广播多播业务的同时,不需要定义新的逻辑信道,降低了在现有RNC-UE系统实现多媒体广播多播业务的难度,并减小了实现多媒体广播多播业务对现有RNC-UE系统结构的更改。 Embodiment of the present invention by providing a multimedia broadcast CTCH air interface user plane of the structure, while realizing that the MBMS service, no need to define new logical channel, reducing the conventional multimedia broadcast system RNC-UE multicast service difficult and reduces the changes to existing RNC-UE system architecture multimedia broadcast multicast service.

另夕卜,本发明提供的多媒体广播多播业务空口用户面结构中没有现有小区广播业务的空口用户面结构中的BMC实体,因此不会受到BMC消息长度以及BMC调度功能的限制,因而不会影响流业务特征的多媒体广播多播业务的速率与实时性。 Another Xi Bu, the present invention provides a multimedia broadcast multicast air interface user plane configuration of the BMC entity without prior cell broadcast service business air interface user plane configuration, it will not be restricted BMC message length and the BMC scheduling function, which is not It will affect traffic flow characteristics of multimedia broadcast multicast rate and real-time services.

本发明通过设置将多媒体广播数据复制到多媒体广播多播业务区包含的每个小区所对应的所有RLC的多媒体业务数据中继,使得不增加PDCP 也能实现广播数据的复制。 The present invention is provided by copying the data to a multimedia broadcast MBMS service area contained in each cell corresponding to all RLC data relaying multimedia service, such can be achieved without increasing the copy PDCP broadcast data.

附图说明 BRIEF DESCRIPTION

图1为现有小区广播业务协议栈的示意图; 1 is a conventional cell broadcast service is a schematic diagram of a protocol stack;

图2为现有MBMS协议规定的多媒体广播用户面结构示意图; Figure 2 is a schematic view of a multimedia broadcast user plane configuration of a conventional MBMS predetermined protocol;

图3为现有MBMS协议规定的多媒体广播空口用户面协议结构示意图; 3 is a schematic multimedia broadcasting air interface user plane protocol structures of the conventional MBMS predetermined protocol;

图4为本发明提供的多媒体广播空口用户面协议结构示意图; FIG 4 is a schematic multimedia broadcast air interface user plane protocol architecture provided by the present invention;

图5为本发明提供的多媒体广播用户面结构示意图; FIG 5 user plane schematic structural diagram of a multimedia broadcast provided by the present invention;

图6为本发明中发送和接收多媒体广播数据的流程图。 FIG 6 is a flowchart of data transmission and reception of multimedia broadcast invention. 具体实施方式 Detailed ways

本发明方案主要是预先设置一个基于CTCH、且不包含PDCP的空口用户面结构,并将该空口用户面结构设置在多媒体广播用户面结构中。 Embodiment of the present invention is mainly based on a pre-set the CTCH, and does not include the air interface user plane PDCP structure, and the air interface user plane configuration disposed in a multimedia broadcast in a user plane architecture.

所设置的空口用户面结构参见图4,为便于对数据的处理,该结构在UE侧只包含RLC、 MAC及PHY三个协议实体,在RNC側只包含RLC和MAC两个协议实体,Node B侧仍然只有PHY。 Air interface user plane provided See Figure 4, for ease of processing of the data, which structure comprises only at the UE side RLC, MAC and PHY three protocol entity in the RNC side comprises only two RLC and MAC protocol entity, Node B side still only PHY. 不论是UE侧,还是RNC 側都没有包含PDCP, PDCP复制数据的功能由RNC中的多媒体业务数据中继实现。 Whether UE side and the RNC side are not included or PDCP, PDCP data copy function is implemented by the RNC multimedia service data relay. 也就是说,不需要在空口用户面结构中增加PDCP,但是需要RNC 中的多媒体业务数据中继将多媒体业务数据透明复制到多媒体广播多播业务区包含的每个小区所对应的RLC。 That is, without increasing the air interface user plane PDCP configuration, but requires the RNC to multimedia service data relaying multimedia service data to the transparent copying MBMS service area comprises each cell corresponding to the RLC.

由于现有的MAC协议所定义的MAC c/sh支持CTCH,且CTCH满足广播业务单点到多点发送的要求,因此无须像MTCH协议结构那样定义新的MAC-m,可以直接由RLC通过CTCH将广播数据发送给MAC。 Since MAC C existing MAC protocols defined / sh supports CTCH, CTCH and meet the requirements of single-multipoint transmission of a broadcast service, as there is no need to define a new MAC-m as MTCH protocol architecture, it may be made by direct RLC CTCH transmits the broadcast data to the MAC. 并且CTCH 的配置信息是通过BCCH承载,因此无须像MTCH协议结构那样定义新的逻辑控制信道。 And CTCH configuration information is through the BCCH carrier, as it is not necessary to define a new logical channel MTCH protocol architecture like.

基于上述设置的空口用户面结构,多媒体广播的用户面结构参见图5, UE中包含RLC、 MAC和PHY, UTRAN的RNC中包含RLC和MAC , UTRAN 的Node B中则包含PHY。 Based on the user plane configuration of the air interface provided, the user plane multimedia broadcasting See Figure 5, UE included in RLC, MAC, and PHY, UTRAN RNC included in the RLC and MAC, UTRAN Node B is contained in the PHY.

基于图5所示的用户面结构的多媒体广播数据传输流程如图6所示,对应以下步骤: Multimedia broadcast data transmission process the user plane structure shown in FIG. 56 as shown in FIG based, corresponding to the steps of:

步骤601、在通过Uu广播多媒体广播多播业务数据时,UTRAN首先通过多媒体业务数据中继对来自SGSN的广播数据进行复制,并将复制后的广播数据转发给多媒体广播多播业务区包含的每个小区所对应的所有RLC。 Step 601, when the multicast service data by broadcast multimedia broadcasting Uu, the UTRAN first multimedia service data by each relaying broadcast data copy from the SGSN, and forwards the copied broadcast data to the multimedia broadcast multicast service area contains a cell corresponding to all RLC.

步骤602、 RLC对该多媒体广播数据进行处理,之后通过CTCH发送给MAC。 Step 602, RLC processing the multimedia broadcasting data, after the transmission to the MAC through the CTCH.

步骤603、 MAC对收到的多媒体广播数据进行处理,并将处理后的多 Step 603, MAC multimedia broadcasting data received and processed, and the processed multi-

媒体广播数据发送给位于Node B的PHY。 Media broadcast data to the Node B is located in the PHY.

步骤604、 Node B通过空口将收到的多媒体广播数据发送出去。 Step 604, Node B sent through the air interface to multimedia broadcast data received.

步骤605 - 606、 UE通过自身的PHY接收Node B发送的多媒体广播数 Step 605 - 606, UE through PHY receive its own Node B transmitting the multimedia broadcast data

据,并将其依次发送给自身的MAC、 RLC等上层协议实体进行处理。 It, and sequentially sends its MAC, RLC and other upper-layer protocol entity for processing.

通过上述发送与接收过程,即可完成多媒体广播数据在空口的广播过程。 By sending and receiving the above-described process, to complete the multimedia broadcast during the broadcast of data over the air interface.

为保证高速流业务的承载要求,还可以对位于BM-SC与UE之间的实体的接口进行设置,比如,把GGSN与SGSN之间的Gn接口以及SGSN与RNC之间的Iu接口都设置为GPRS隧道协议(GTP)隧道承载,以满足高速流业务的承载要求。 To ensure high-speed flow of the service bearer requirements, can also be provided to entities located between the BM-SC and the UE interface, for example, the Gn interface and the Iu interface between the SGSN and the GGSN and between the RNC to the SGSN GPRS tunneling protocol (GTP) tunnel is to meet the load requirements of high-speed traffic flow.

以上所述仅为本发明方案的较佳实施例,并不用以限定本发明的保护范围。 The above are only preferred embodiments of the present invention embodiments are not intended to limit the scope of the present invention.

Claims (6)

1、一种通过空中接口实现多媒体广播多播业务的方法,广播多播业务中心BM-SC中的多媒体广播数据依次通过网关通用分组无线服务支持节点GGSN、业务通用分组无线服务支持节点SGSN和无线网络控制器RNC进行处理,并由RNC通过空中接口发送给用户设备UE,其特征在于该方法包括:设置包括无线链路控制RLC、媒体访问控制MAC和物理层PHY的空中接口用户面结构; 基于该空中接口用户面结构,所述RNC通过空中接口将多媒体广播数据发送给UE包括以下步骤: a.RNC通过多媒体业务数据中继将SGSN发送来的多媒体广播数据复制到多媒体广播多播业务区包含的每个小区所对应的所有RLC; b.RLC处理收到的多媒体广播数据,并通过公共业务信道CTCH将处理后的多媒体广播数据发送给MAC,MAC对收到的多媒体广播数据进行处理,并将处理后的多媒体广播数据发送给基站Node B,Node 1, one implementation method for MBMS service over the air interface, a data broadcast multimedia broadcast multicast service center BM-SC is sequentially via a gateway general packet radio service support node the GGSN, service general packet radio service support node SGSN and the radio the network controller RNC is processed by the RNC over the air interface to the user equipment UE through, characterized in that the method comprises: setting the RLC includes a radio link control, media access control MAC and air interface user plane configuration of the physical layer (PHY); based the air interface user plane structure, the RNC transmits the multimedia broadcasting data over the air interface to the UE comprises the steps of: a.RNC multimedia service by copying the data relay SGSN multimedia broadcasting data transmitted to the MBMS service area comprises each cell corresponding to all RLC; b.RLC handling multimedia broadcast data received and transmitted to the MAC broadcast multimedia data to the common traffic channel CTCH process, the multimedia broadcast MAC processes the received data, and multimedia broadcast transmitting the processed data to the base station Node B, Node B通过空中接口将收到的多媒体广播数据发送出去; c.UE接收Node B通过空中接口发送的多媒体广播数据。 B receives the multimedia broadcasting data transmitted over an air interface; c.UE Node B receiving multimedia broadcast data transmitted over the air interfaces.
2、 根据权利要求1所述的方法,其特征在于,所述设置包括RLC、 MAC 和PHY的空中接口用户面结构为:在空中接口用户面结构的UE侧设置RLC、 MAC及PHY,在RNC侧设置RLC和MAC,在Node B侧设置PHY。 2. The method according to claim 1, characterized in that the setting comprises a RLC, MAC and PHY air interface user plane structure: UE RLC side air interface user plane in the structure, the MAC and the PHY, the RNC side RLC and MAC, PHY disposed in Node B side.
3、 根据权利要求2所述的方法,其特征在于所述步骤b中,所述MAC将处理后的多媒体广播数据发送给Node B为:MAC将处理后的多媒体广播数据发送给位于Node B的PHY;步骤c中,所述UE接收Node B发送来的广播数据为:UE通过自身的PHY 接收Node B发送的广播数据。 3. The method according to claim 2, wherein the multimedia broadcasting data after step b, the MAC processing is transmitted to the Node B: multimedia broadcasting data transmitted to the MAC processing will be located in the Node B a PHY; step c, the UE receives Node B broadcast data is transmitted: the UE receives Node B transmits broadcast data through its own PHY.
4、 根据权利要求2或3所述的方法,其特征在于,所述步骤c之后进一步包括:UE依次通过自身的MAC和RLC对收到的多媒体广播数据进行处理。 4. The method of claim 2 or claim 3, wherein, after said step c further comprising: UE sequentially received multimedia broadcast data is processed through its own MAC and RLC.
5、 根据权利要求1所述的方法,其特征在于,该方法进一步包括:将GGSN 与SGSN之间的接口设置为通用分组无线服务隧道协议GTP隧道承载。 5. The method of claim 1, wherein the method further comprises: setting an interface between the GGSN and the SGSN for the general packet radio service tunneling protocol bearer GTP tunnel.
6、根据权利要求1所述的方法,其特征在于,该方法进一步包括:将SGSN 与RNC之间的接口设置为GTP隧道承载。 6. The method of claim 1, wherein the method further comprises: setting an interface between the SGSN and the RNC is a GTP tunnel bearer.
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