WO2009092277A1 - 多媒体业务数据发送和接收方法、基站设备和用户设备 - Google Patents

多媒体业务数据发送和接收方法、基站设备和用户设备 Download PDF

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Publication number
WO2009092277A1
WO2009092277A1 PCT/CN2009/000014 CN2009000014W WO2009092277A1 WO 2009092277 A1 WO2009092277 A1 WO 2009092277A1 CN 2009000014 W CN2009000014 W CN 2009000014W WO 2009092277 A1 WO2009092277 A1 WO 2009092277A1
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WIPO (PCT)
Prior art keywords
scheduling information
transmission order
receiving
multimedia service
data
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2009/000014
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English (en)
French (fr)
Inventor
Yu Chen
He Wang
Yonggang Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Shanghai Bell Co Ltd
Alcatel Lucent SAS
Original Assignee
Alcatel Lucent Shanghai Bell Co Ltd
Alcatel Lucent SAS
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Filing date
Publication date
Application filed by Alcatel Lucent Shanghai Bell Co Ltd, Alcatel Lucent SAS filed Critical Alcatel Lucent Shanghai Bell Co Ltd
Priority to ES09703502T priority Critical patent/ES2404822T3/es
Priority to US12/811,893 priority patent/US20100279721A1/en
Priority to JP2010541681A priority patent/JP5778424B2/ja
Priority to EP09703502A priority patent/EP2230801B1/en
Priority to KR1020107017431A priority patent/KR101527737B1/ko
Priority to PL09703502T priority patent/PL2230801T3/pl
Publication of WO2009092277A1 publication Critical patent/WO2009092277A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1273—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of downlink data flows
    • 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
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
    • H04L67/62—Establishing a time schedule for servicing the requests
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • Multimedia service data transmitting and receiving method base station device and user equipment
  • the present invention relates to a multimedia data transmission and reception technology, and particularly to a multimedia service data transmission and reception method, a base station device, and a user equipment, which can implement dynamic scheduling of MBMS services in a single frequency network transmission.
  • 3GPP 3rd Generation Partnership Project
  • LTE Long Term Evolution
  • Multimedia Broadcast/Multicast Service is a service introduced by 3GPP Rel.6, which refers to a point-to-multipoint service in which a data source sends data to multiple users, thereby implementing the network (including the core).
  • Network and access network resource sharing, with as few resources as possible to achieve as many services as possible for multimedia users with the same needs.
  • the MBMS service can realize both plain text and low-rate message-like multicast and broadcast, and can also realize multicast and broadcast of higher-rate multimedia services by using a common transport channel and a public radio bearer, for example, Mobile TV.
  • MCH Multimedia Broadcast/Multicast Service
  • E-MBMS evolved Multimedia Broadcast/Multicast Service
  • MSAP MBMS Subframe Allocation Pattern
  • the MSAP consists of a series of sub-frames that may be discontinuous, and the MSAP generally does not change much throughout the session, so it can be simply called static scheduling information.
  • the UE If the UE only knows the MSAP, it may need to receive all the services on the MCH because the UE cannot know exactly which subframes it should receive. Therefore, it is further required to indicate how the UE receives only those subframes associated with itself in order to save power of the user equipment. Summary of the invention
  • the object of the present invention is to provide a method for transmitting and receiving multimedia service data, a base station device and a user equipment, which can implement dynamic scheduling of MBMS services in single frequency network transmission.
  • a method for transmitting multimedia service data including the steps of: receiving transmission order information indicating a transmission order of a plurality of multimedia services; generating scheduling information including a starting index of each multimedia service; and transmitting based The order information and the scheduling information transmit data of each multimedia service.
  • a multimedia service data receiving method including the steps of: receiving transmission order information indicating a transmission order of a plurality of multimedia services; receiving scheduling information including a starting index of each multimedia service: and based on The transmission order information and the scheduling information receive data of a specific multimedia service.
  • a base station device comprising: means for receiving transmission order information indicating a transmission order of a plurality of multimedia services; scheduling information generating means for generating scheduling information including a starting index of each multimedia service And a transmitting device that transmits data of each multimedia service based on the transmission order information and the scheduling information.
  • a user equipment including: receiving means, receiving transmission order information indicating a transmission order of a plurality of multimedia services, and receiving scheduling information including a start index of each multimedia service; and receiving The control device controls the receiving device to receive data of the specific multimedia service based on the transmission order information and the scheduling information.
  • dynamic scheduling of MBMS services can be implemented in a single frequency network, thereby enabling power saving of user equipment in the case of discontinuous transmission and making statistical multiplexing easy.
  • FIG. 2 is a schematic structural block diagram of a base station device according to an embodiment of the present invention.
  • FIG. 3 illustrates an example structure of an MSAP according to an embodiment of the present invention
  • FIG. 4 is a detailed flow chart illustrating a method of transmitting multimedia service data according to an embodiment of the present invention
  • FIG. 5 is a schematic structural block diagram of a user equipment according to an embodiment of the present invention
  • FIG. 6 shows a detailed flowchart illustrating a multimedia service data receiving method according to an embodiment of the present invention. detailed description
  • FIG. 1 shows a network structure diagram of a communication system according to an embodiment of the invention.
  • eBM-SC evolved broadcast/multicast service center
  • MBMS gateway MBMS GW two base stations in the same single frequency network (SFN) area
  • SFN single frequency network
  • eNB1 and eNB2 and user equipments UE1, UE2, and UE3, and some other devices, such as routers and the like, are omitted.
  • the user plane interface between the MBMS gateway MBMS GW and the base station eNB is referred to as an M1 interface
  • the interface between the base station eNB1 and the base station eNB2 is referred to as an X2 interface.
  • the data directly goes to the MBMS GW to the eNB, and the interface between them is called the M1 interface.
  • the signaling starts from the MBMS GW to the MCE (MBMS Control Entity), and then from the MCE to the eNB through the M2 interface.
  • the length of the scheduling period and the static scheduling information are all configured by MCE.
  • FIG. 1 is merely for explaining the embodiment of the present invention, and does not mean that the network actually put into use has exactly the same structure as described above, and those skilled in the art can adopt multiple MBMS gateways. And more base stations and add other auxiliary equipment.
  • dynamic scheduling information is introduced into the MSAP for indicating to the user equipment the location of each service it is to receive.
  • These subframes used to represent dynamic scheduling information are part of the MSAP and can be referred to as dynamic scheduling information.
  • Dynamic scheduling is very important to support statistical multiplexing and is very beneficial for power savings in the case of DRX (discontinuous reception).
  • an MCH may carry multiple services. If the UE receives the service it wants by receiving all the subframes indicated by the MSAP, it will waste a lot of power.
  • the MSAP is valid for the session until the MCE changes it. That is, the MSAP may change as the session changes. It is assumed that there are N f (N f is a natural number) subframes in one MSAP, and these subframes can be indexed by 1 to N f according to the transmission time relationship of the subframe. This points to a specific business
  • the transmission scenario is very useful, avoiding the need to accurately indicate the exact location of the next subframe to reduce signaling overhead. Therefore, according to an embodiment of the present invention, for a specific E-MBMS service, it is only necessary to indicate to the UE the index of a subframe to be transmitted of a specific MTCH (MBMS point-to-multipoint traffic channel).
  • MTCH MBMS point-to-multipoint traffic channel
  • the data of each service in the MSAP is transmitted on consecutive indexes, that is, the indexes of the same service are set to be continuous, so that the composition of the dynamic scheduling information is simplified.
  • the dynamic scheduling information provided in the MSAP only needs to indicate the starting index and number of indexes for a certain service. This is very useful for the power savings of the UE, especially if the UE is unable to receive the scheduling information correctly. Since each eNB should guarantee the same scheduling information, the packets to be scheduled must be received and buffered first, so it is feasible to record and transmit data of the same service according to the continuous index of the MSAP subframe group at the eNB side.
  • FIG. 2 is a block diagram showing a schematic structure of a base station device according to an embodiment of the present invention.
  • a base station device includes: a buffer unit 110; a packet unit 130; a scheduling information generating unit 120 and a transmitting unit 140.
  • the buffer unit 110 temporarily stores multimedia service data, such as MBMS data, received from the MBMS gateway through a receiving unit (not shown).
  • multimedia service data such as MBMS data
  • the base station device needs to transmit the transmission order of each service in the MSAP determined by the MCE to the user equipment, for example, the sending unit 140 transmits and receives on the MCCH (MBMS point-to-multipoint control channel).
  • the unit receives the MSAP, which contains the order in which the data of each service is sent.
  • the transmission order information does not have to be sent every time, and is usually repeated at a slower frequency. For example, every 640ms, and the granularity of scheduling may be only 160ms.
  • the order information for each service has been determined and is continuously sent to the UE until another session begins. However, the possibility of changes is not ruled out during the period. After that, the data arrives and the eNB performs scheduling.
  • the transmission order can be previously configured by the MCE, which can be determined by some priority information.
  • the scheduling information will be very simple and have minimal signaling overhead. For example, three services, Service A, Service B, and Service C are multiplexed on the same MCH. If the number of subframes allocated to these three services is 3, 2, 4, respectively, the scheduling information is ⁇ 3, 2, 4 ⁇ and no service ID is required. Therefore, it is necessary to sequentially transmit the transmission order to the UE through the MCCH in the same scheduling order, which is the service list multiplexed on the MCH.
  • the scheduling information generated by the scheduling information generating unit 120 may include a starting index of the service.
  • dynamic scheduling information of each service may be added in the first subframe of the MSAP, and the transmitting unit 140 passes the L3 logical channel, such as MSCH, or L1 in the corresponding scheduling update period. /L2 signaling, sent to the user equipment.
  • the scheduling information may be transmitted as part of the MAC header or transmitted through the MAC control unit.
  • the scheduling information may be distributed in a subframe of a specific MTCH for transmission.
  • the scheduling information will be spread across different MAC PDUs as part of the MAC PDU.
  • scheduling information may be transmitted in the MCCH instead of multiplexing the scheduling information with the traffic data as described above.
  • FIG. 3 shows an example structural diagram of an MSAP of an MCH according to an embodiment of the present invention.
  • Service A and Service B are multiplexed on the MCH, and there are 8 subframes in the MSAP subframe group.
  • Service A will be sent with the subframe index ⁇ 1, 2, 3, 4 ⁇
  • Service B will be sent with the subframe index ⁇ 4, 5, 6, 7, 8 ⁇ .
  • subframe 4 two services are concatenated in the same MAC PDU.
  • the scheduling information is transmitted by a MAC Control Section (not shown) in the transmitting unit 140.
  • the scheduling information is arranged in the first subframe of the MSAP.
  • the grouping unit 130 groups the data of the respective services temporarily stored in the buffer unit 10 in accordance with the transmission order information determined before the start of the session and the dynamic scheduling information determined by the scheduling information generating unit 120, so that the respective services in the MSAP are The index is continuous, and packets of different services are cascaded together.
  • the transmitting unit 140 groups the service data and transmits them one by one in chronological order in accordance with the transmission order information and the scheduling information determined by the scheduling information generating unit 120.
  • the scheduling information is periodically updated by the MCE, and the scheduling information is usually updated before the data is transmitted.
  • Fig. 4 shows a detailed flow chart illustrating a method of transmitting multimedia service data according to an embodiment of the present invention.
  • the transmitting unit 140 receives the transmission order information configured by the MCE and forwards it to the user equipment.
  • the buffer unit 110 temporarily stores the reception from the MBMS gateway.
  • Multimedia business data such as MBMS data.
  • the scheduling information generated by the scheduling information generating unit 120 may include the starting index of the service.
  • the scheduling information includes the starting location information, but other information may be included in addition to this. If the scheduling information only includes the starting location information, the UE needs to perform blind detection when receiving. That is, when it receives data of other services or receives the last index of the MSAP in a certain scheduling period, the scheduling period is completed for the reception of a certain service.
  • step S14 the grouping unit 130 groups the data of the respective services temporarily stored in the buffer unit 10 according to the transmission order information determined before the start of the session and the dynamic scheduling information determined by the scheduling information generating unit 120, so that each of the MSAPs The index of the service is continuous, and the packets of different services are cascaded together.
  • the transmitting unit 140 groups the service data and transmits them one by one in chronological order in accordance with the transmission order information and the scheduling information determined by the scheduling information generating unit 120.
  • FIG. 5 shows a schematic structural block diagram of a user equipment according to an embodiment of the present invention.
  • the user equipment according to an embodiment of the present invention includes: a receiving unit 210, a receiving control unit 240, a sending order information extracting unit 220, a scheduling information extracting unit 230, an MBMS data storage unit 250, an MBMS data processing unit 260, and Presentation unit 270.
  • the receiving unit 210 first receives all data transmitted from the base station device, including transmission order information on the MCCH channel. Then, the transmission order information extracting unit 220 extracts the business order information set by the MCE implementation from the data received by the receiving unit 210. As mentioned above, this information does not have to be sent every time, and is usually repeated at a slower frequency. For example, every 640ms, and the granularity of scheduling may be only 160ms. Usually, at the beginning of a certain service session, the sequence information of each service has been determined and continuously sent to the UE until another session begins.
  • the scheduling information extracting unit 230 extracts scheduling information from the data received by the receiving unit 210, for example, the scheduling information includes a starting index of a certain service in the MSAP.
  • the reception control unit 240 controls the receiving unit 210 to receive MBMS data of a specific service, such as a mobile television program, based on the above-described transmission order information and scheduling information, and stores it in the MBMS data storage unit 250.
  • a specific service such as a mobile television program
  • the receiving unit 210 needs to perform blind detection when the UE receives. That is when it receives The data of other services or the last index of the MSAP is received within a scheduling period, and the scheduling period is completed for the reception of a certain service.
  • the MBMS data processing unit 260 processes the MBMS data stored in the MBMS data storage unit 250, such as decoding, decompression, etc., to restore it to the content data to be presented, and then presents by the presentation unit 270, for example, displaying the mobile TV. program.
  • the MBMS data corresponding to the new program can be received by the reception control unit 240.
  • Fig. 6 shows a detailed flow chart illustrating a multimedia service data receiving method according to an embodiment of the present invention.
  • the receiving unit 210 receives all data including transmission order data.
  • the transmission order information extracting unit 220 extracts the service transmission order information set by the MCE implementation from the data received by the receiving unit 210.
  • the scheduling information extracting unit 230 extracts scheduling information from the data received by the receiving unit 210, for example, the scheduling information includes a starting index of a certain service in the MSAP.
  • the reception control unit 240 controls the receiving unit 210 to receive MBMS data of a specific service, such as a mobile television program, based on the above-described transmission order information and scheduling information, and stores it in the MBMS data storage unit 250.
  • a specific service such as a mobile television program
  • step S24 the MBMS data processing unit 260 processes the MBMS data stored in the MBMS data storage unit 250, for example, decoding, decompression, etc., to restore it to the content data to be presented, and then presented by the presentation unit 270, for example The mobile TV program is displayed.

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Description

多媒体业务数据发送和接收方法、 基站设备和用户设备 技术领域
本发明涉及一种多媒体数据发送和接收技术，具体涉及一种多媒体业务数据 发送和接收方法、 基站设备和用户设备， 能够在单频网传输中实现对 MBMS业 务的动态调度。 背景技术
3GPP (第三代合作伙伴计划） 在 2005年启动了长期演进研究项目 （LTE: Long Term Evolution),希望以更高的数据吞吐量和更好的网络性能，为运营商和 用户不断增长的需求提供支持。
多媒体广播 /多播业务 （MBMS: Multimedia Broadcast/Multicast Service) 是 3GPP Rel.6引入的一项业务，是指一个数据源向多个用户发送数据的点到多点业 务， 从而实现网络（包括核心网和接入网）资源共享， 以尽可能少的资源实现对 尽可能多的、 具有相同需求的多媒体用户的服务。 在无线接入网， MBMS 业务 通过使用公共传输信道和公共无线承载，既能实现纯文本低速率的消息类多播和 广播， 也能实现较高速率的多媒体业务的多播和广播， 例如， 手机电视。
在 LTE的情况下， 现有的多媒体广播 /多播业务 （MBMS) 演进成了演进型 多媒体广播 /多播业务（E-MBMS )。 很多的业务通过时分的方式复用在一个组播 信道 MCH上。这个 MCH—般只是占用所有系统资源的一部分，并且这个 MCH 所占用的那些资源用 MSAP (MBMS Subframe Allocation Pattern) 表示。 MSAP 包括一系列可能不连续的子帧， 并且 MSAP在整个会话中一般不怎么改变， 所 以可以简单的称之为静态调度信息。
如果 UE只知道 MSAP,可能就需要把这个 MCH上的所有业务都接收下来， 因为 UE 无法确切知道自己应该接收哪些子帧。 所以， 还需要更进一步的指示 UE如何只接收和自己有关的那些子帧， 以便节省用户设备的电力。 发明内容
本发明的目的是提出一种多媒体业务数据发送和接收方法、 基站设备和用 户设备， 能够在单频网传输中实现对 MBMS业务的动态调度。 在本发明的一个方面， 提供了一种多媒体业务数据发送方法， 包括步骤： 接 收表示多个多媒体业务的发送次序的发送次序信息；生成包括各个多媒体业务的 起始索引的调度信息；以及基于发送次序信息和调度信息发送各个多媒体业务的 数据。
在本发明的另一方面， 提供了一种多媒体业务数据接收方法， 包括步骤： 接 收表示多个多媒体业务的发送次序的发送次序信息；接收包括各个多媒体业务的 起始索引的调度信息：以及基于发送次序信息和调度信息接收特定多媒体业务的 数据。
在本发明的又一方面， 提供了一种基站设备， 包括： 接收表示多个多媒体业 务的发送次序的发送次序信息的装置； 调度信息产生装置， 生成包括各个多媒体 业务的起始索引的调度信息； 以及发送装置， 基于发送次序信息和调度信息发送 各个多媒体业务的数据。
在本发明的再一方面， 提供了一种用户设备， 包括： 接收装置， 接收表示多 个多媒体业务的发送次序的发送次序信息，以及接收包括各个多媒体业务的起始 索引的调度信息； 以及接收控制装置， 基于发送次序信息和调度信息控制接收装 置接收特定多媒体业务的数据。
利用本发明的上述方法和设备， 能够在单频网中实现对 MBMS业务的动态 调度，从而能够在不连续传输情况下节省用户设备的电力并且使得容易进行统计 复用。 附图说明
通过下面结合附图说明本发明的优选实施例， 将使本发明的上述及其它目 的、 特征和优点更加清楚， 其中- 图 1示出了根据本发明实施例的方法、基站设备和用户设备所应用的通信系 统的示意图：
图 2示出了根据本发明实施例的基站设备的示意性结构框图；
图 3示出了根据本发明实施例的 MSAP的示例结构；
图 4 示出了说明根据本发明实施例的多媒体业务数据发送方法的详细流程 图；
图 5示出了根据本发明实施例的用户设备的示意性结构框图； 以及 图 6 示出了说明根据本发明实施例的多媒体业务数据接收方法的详细流程 图。 具体实施方式
下面参照附图对本发明的优选实施例进行详细说明，在描述过程中省略了对 于本发明来说是不必要的细节和功能， 以防止对本发明的理解造成混淆。
图 1示出了根据发明实施例的通信系统的网络结构图。 如图 2所示， 为了 便于说明， 仅仅示出了一个演进的广播 /组播业务中心 （eBM-SC)， 一个 MBMS 网关 MBMS GW, 处于同一个单频网 （SFN)区域中的两个基站 eNBl和 eNB2， 以及用户设备 UE1、 UE2和 UE3， 并且省略了其他的一些设备， 例如路由器等 等。
在 LTE的情况下， 将 MBMS网关 MBMS GW和基站 eNB之间的用户面接 口称为 Ml接口， 而将基站 eNBl和基站 eNB2之间的接口称为 X2接口。
另夕卜， 在用户面， 数据直接走 MBMS GW到 eNB, 它们之间的接口称为 Ml接口。 在控制面， 信令从 MBMS GW先到 MCE (MBMS Control Entity), 再 从 MCE通过 M2接口到各 eNB。 调度周期的长度以及静态调度信息都是 MCE 配置的。
很明显， 如图 1所示的网络结构仅仅是用于说明本发明实施例， 而不是意味 着实际投入使用的网络具有与上述完全相同的结构，本领域的普通技术人员可以 采用多个 MBMS网关和更多的基站以及添加其他的辅助设备。
根据本发明的一个实施例， 在静态调度信息之外， 在 MSAP 中引入动态调 度信息， 用于向用户设备指出它要接收的各个业务的位置。用来表示动态调度信 息的这些子帧是 MSAP 的一部分， 可以将它们称为动态调度信息。 动态调度对 于支持统计复用而言非常重要， 并且对于 DRX (不连续接收） 情况下的电能节 省非常有利。 如上所述， 一个 MCH 可能承载多个业务， 如果 UE只是通过将 MSAP所指示的所有子帧都接收下来而接收自己想要的业务，则会浪费大量的电 力。
MSAP对于会话是有效的， 直到 MCE改变它。 也就是说， MSAP可能随着 会话的改变而变换。 假设在一个 MSAP中有 Nf (Nf为自然数） 个子帧， 可以根 据子帧的传输时间关系用 1到 Nf来对这些子帧进行索引。 这对于特定业务指出 传输场合是非常有用的， 避免了要准确指出下一个子帧的确切位置， 以减小信令 开销。 因此， 根据本发明的实施例， 对于特定的 E-MBMS业务， 仅仅需要向 UE 指出特定 MTCH (MBMS点到多点业务信道）将要传输的子帧的索引就可以了。
根据本发明的一个实施例， 将 MSAP 中各个业务的数据在连续的索引上发 送， 也就是将同一个业务的索引设置成连续的， 来使得动态调度信息的构成简单 化。 例如， 在这种情况下， 在 MSAP 中提供的动态调度信息仅仅需要指出某个 业务的起始索引和索引的数目。 这对于 UE 的电能节省是非常有用的， 尤其在 UE不能正确接收调度信息的情况下。 由于各个 eNB应该保证相同的调度信息， 要被调度的分组必须被首先接收并且缓冲， 因此在 eNB端按照 MSAP子帧组的 连续索引来记录并传输相同业务的数据是可行的。
图 2示出了根据本发明实施例的基站设备的示意性结构框图。 如图 2所示， 根据本发明实施例的基站设备包括： 缓冲单元 110; 分组单元 130; 调度信息产 生单元 120和发送单元 140。
缓冲单元 110暂时存储通过接收单元 （图中未示出） 从 MBMS网关接收的 多媒体业务数据， 例如 MBMS数据。
在发送多个业务的数据的情况下， 基站设备需要将由 MCE所确定的 MSAP 中各个业务的发送次序传输给用户设备， 例如发送单元 140在 MCCH (MBMS 点到多点控制信道）上发送通过接收单元接收的 MSAP, 其中包含的各个业务的 数据的发送次序。
发送次序信息不必每次都发送， 一般以一个较慢的频率重复。 比如每隔 640ms, 而调度的粒度可能只有 160ms。 通常， 在某个业务会话开始时， 各个业 务的顺序信息已经确定， 并不断重复发送给 UE， 直到另一个会话开始。 但期间 不排除更改的可能。 在此之后， 数据到来， eNB进行调度。
如上所述， 该发送次序可以事先由 MCE配置的， 这可以由一些优先权信息 来确定。 这样， 如果 UE知道了传输次序， 调度信息将会非常简单并且具有极小 的信令开销。例如， 在同一 MCH上复用了三个业务， 业务 A， 业务 B和业务 C。 如果分配给这三个业务的子帧数目分别是 3， 2, 4， 则调度信息就是 {3， 2， 4} , 并不需要业务 ID。 因此， 需要通过 MCCH以相同的调度次序将发送次序顺序发 送给 UE, 该发送次序信息是的复用在 MCH上的业务列表。
这样， 由于在 MSAP中， 各个 MBMS业务的索引是连续的， 使得调度信息 的结构非常简单，例如调度信息产生单元 120所产生的调度信息可以包括该业务 的起始索引。
另外， 根据本发明的实施例， 可以将各个业务的动态调度信息添加在 MSAP 的第一个子帧中， 并且由发送单元 140在相应的调度更新周期中通过 L3逻辑信 道， 例如 MSCH, 或者 L1/L2信令， 发送给用户设备。 在通过 L1/L2信令发送调 度信息的情况下，可以将调度信息作为 MAC报头的一部分来发送或者通过 MAC 控制单元来发送。
作为另一实施例，可以将调度信息分散在特定 MTCH 的子帧中来进行发送。 在这种情况下， 调度信息将分散在不同的 MAC PDU中， 作为 MAC PDU的一部 分。
作为另一实施例， 可以在 MCCH中发送调度信息， 而不是像上面所描述的 那样将调度信息与业务数据复用在一起传输。
图 3示出了根据本发明实施例的 MCH的 MSAP的示例结构图。如图 3所示， 在 MCH上复用了业务 A和业务 B, 在 MSAP子帧组中共有 8个子帧。 在当前 的调度周期中， 业务 A将要以子帧索引 {1、 2、 3、 4}来发送， 业务 B要以子帧 索引 {4、 5、 6、 7、 8}来发送。 在子帧 4中， 两个业务在相同的 MAC PDU中级 联。 调度信息由发送单元 140 中的 MAC控制部分 （未示出） 发送。 例如， 在 MSAP的第一子帧中布置了该调度信息。
这样，分组单元 130按照在会话开始之前就确定的发送次序信息和调度信息 产生单元 120所确定的动态调度信息对缓冲单元 10中暂时存储的各个业务的数 据进行分组， 使得在 MSAP 中各个业务的索引是连续的， 并且不同业务的数据 包被级联在一起。
在数据发送周期， 发送单元 140按照发送次序信息和调度信息产生单元 120 所确定的调度信息， 将业务数据分组并且按照时间顺序逐个发送出去。
另外， 根据本发明的一个实施例， 由 MCE周期地对调度信息进行更新， 通 常在数据发送之前对调度信息进行更新。
图 4 示出了说明根据本发明实施例的多媒体业务数据发送方法的详细流程 图。 如图 4所示， 首先， 在步骤 Sl l， 发送单元 140接收由 MCE所配置的发送 次序信息， 并将其转发给用户设备。
在会话幵始之后， 在步骤 S12, 缓冲单元 110暂时存储从 MBMS网关接收 的多媒体业务数据， 例如 MBMS数据。
然后， 在步骤 S13， 由于在 MSAP中， 各个 MBMS业务的索引是连续的， 使得调度信息的结构非常简单，例如调度信息产生单元 120所产生的调度信息可 以包括该业务的起始索引。
如上所述， 调度信息包括起始位置信息， 但除此之外也可能包括其他信息。 如果调度信息只包括有起始位置信息， 那么 UE接收的时候需要进行盲检测。 也 就是当它接收到其他业务的数据或在某个调度周期内接收了 MSAP 的最后一个 索引， 本调度周期针对某个业务的接收完毕。
在步骤 S14， 分组单元 130按照在会话开始之前就确定的发送次序信息和调 度信息产生单元 120所确定的动态调度信息对缓冲单元 10中暂时存储的各个业 务的数据进行分组， 使得在 MSAP 中各个业务的索引是连续的， 并且不同业务 的数据包被级联在一起。
在数据发送周期， 发送单元 140按照发送次序信息和调度信息产生单元 120 所确定的调度信息， 将业务数据分组并且按照时间顺序逐个发送出去。
图 5示出了根据本发明实施例的用户设备的示意性结构框图。 如图 5所示， 根据本发明实施例的用户设备包括： 接收单元 210， 接收控制单元 240， 发送次 序信息提取单元 220，调度信息提取单元 230， MBMS数据存储单元 250， MBMS 数据处理单元 260和呈现单元 270。
接收单元 210首先接收从基站设备发送的所有数据， 包括在 MCCH信道上 的发送次序信息。然后， 发送次序信息提取单元 220从接收单元 210接收的数据 中提取由 MCE实现设置的业务次序信息。 如上所述， 该信息不必每次都发送， 一般以一个较慢的频率重复。 比如每隔 640ms, 而调度的粒度可能只有 160ms。 通常， 在某个业务会话开始时， 各个业务的顺序信息已经确定， 并不断重复发送 给 UE, 直到另一个会话幵始。
会话开始之后，调度信息提取单元 230从接收单元 210所接收的数据中提取 调度信息， 例如该调度信息包括某个业务在 MSAP中的起始索引。
然后，接收控制单元 240基于上述的发送次序信息和调度信息控制接收单元 210接收特定业务的 MBMS数据， 例如移动电视节目， 存储在 MBMS数据存储 单元 250中。
在这里， UE接收的时候接收单元 210需要进行盲检测。也就是当它接收到 其他业务的数据或在某个调度周期内接收了 MSAP 的最后一个索引， 本调度周 期针对某个业务的接收完毕。
MBMS数据处理单元 260对 MBMS数据存储单元 250中存储的 MBMS数 据进行处理， 例如解码、 解压縮等处理， 将其恢复成待呈现的内容数据， 然后， 由呈现单元 270呈现， 例如显示该移动电视节目。
另外， 如果用户想要接收其他的节目， 可以由接收控制单元 240接收与新的 节目相对应的 MBMS数据。
图 6 示出了说明根据本发明实施例的多媒体业务数据接收方法的详细流程 图。 如图 6所示， 首先， 接收单元 210接收包括发送次序数据在内的所有数据。 然后， 在步骤 S21 , 发送次序信息提取单元 220从接收单元 210接收的数据中提 取由 MCE实现设置的业务发送次序信息。
会话开始之后， 在步骤 S22, 调度信息提取单元 230从接收单元 210所接收 的数据中提取调度信息， 例如该调度信息包括某个业务在 MSAP中的起始索引。
然后， 在步骤 S23， 接收控制单元 240基于上述的发送次序信息和调度信息 控制接收单元 210 接收特定业务的 MBMS 数据， 例如移动电视节目， 存储在 MBMS数据存储单元 250中。
在步骤 S24, MBMS数据处理单元 260对 MBMS数据存储单元 250中存储 的 MBMS数据进行处理， 例如解码、 解压缩等处理， 将其恢复成待呈现的内容 数据， 然后， 由呈现单元 270呈现， 例如显示该移动电视节目。
上面的描述仅用于实现本发明的实施方式， 本领域的技术人员应该理解， 在 不脱离本发明的范围的任何修改或局部替换，均应该属于本发明的权利要求来限 定的范围， 因此， 本发明的保护范围应该以权利要求书的保护范围为准。

Claims

权利要求
1、 一种多媒体业务数据发送方法， 包括步骤：
接收表示多个多媒体业务的发送次序的发送次序信息；
生成包括各个多媒体业务的起始索引的调度信息； 以及
基于发送次序信息和调度信息发送各个多媒体业务的数据。
2、 根据权利要求 1所述的方法， 还包括发送接收的发送次序消息的步骤。
3、 根据权利要求 1所述的方法， 还包括发送生成的调度信息的步骤。
4、 根据权利要求 1所述的方法， 其中各个多媒体业务的索引是连续的。
5、根据权利要求 1所述的方法， 其中所述发送次序信息是通过 MCCH逻辑 信道发送的。
6、 根据权利要求 1所述的方法， 其中所述调度信息是通过 L1/L2信令发送 的。
7、根据权利要求 1所述的方法，其中所述调度信息是通过 L3逻辑信道发送 的。
8、根据权利要求 6和 7之一所述的方法，其中所述调度信息被添加在 MSAP 的第一个子帧中。
9、 根据权利要求 6和 7之一所述的方法， 其中所述调度信息是通过分散在 不同的 MAC PDU中而发送的。
10、 根据权利要求 1所述的方法， 其中所述调度信息是通过 MCCH而发送 的。
11、 一种多媒体业务数据接收方法， 包括步骤：
接收表示多个多媒体业务的发送次序的发送次序信息；
接收包括各个多媒体业务的起始索引的调度信息； 以及
基于发送次序信息和调度信息接收特定多媒体业务的数据。
12、 根据权利要求 11所述的方法， 其中， 各个多媒体业务的索引是连续的。
13、 一种基站设备， 包括- 接收表示多个多媒体业务的发送次序的发送次序信息的装置；
调度信息产生装置， 生成包括各个多媒体业务的起始索引的调度信息； 以及 发送装置， 基于发送次序信息和调度信息发送各个多媒体业务的数据。
14、 根据权利要求 13所述的基站设备， 其中所述发送装置被配置成发送接. 收的发送次序消息。
15、 根据权利要求 13所述的基站设备， 其中所述发送装置被配置成发送生 成的调度信息。
16、 根据权利要求 13所述的基站设备， 其中各个多媒体业务的索引是连续 的。
17、根据权利要求 13所述的基站设备，其中所述发送次序信息是通过 MCCH 逻辑信道发送的。
18、 根据权利要求 13所述的基站设备， 其中所述调度信息是通过 L1/L2信 令发送的。
19、根据权利要求 13所述的基站设备，其中所述调度信息是通过 L3逻辑信 道发送的。
20、 一种用户设备， 包括：
接收装置， 接收表示多个多媒体业务的发送次序的发送次序信息， 以及接收 包括各个多媒体业务的起始索引的调度信息； 以及
接收控制装置，基于发送次序信息和调度信息控制接收装置接收特定多媒体 业务的数据。
21、 根据权利要求 20所述的用户设备， 其中， 各个多媒体业务的索引是连 续的。
PCT/CN2009/000014 2008-01-07 2009-01-06 多媒体业务数据发送和接收方法、基站设备和用户设备 Ceased WO2009092277A1 (zh)

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EP2230801A1 (en) 2010-09-22
ES2404822T3 (es) 2013-05-29
KR101527737B1 (ko) 2015-06-10
CN101483810A (zh) 2009-07-15
PL2230801T3 (pl) 2013-08-30
JP2011509609A (ja) 2011-03-24
EP2230801B1 (en) 2013-03-20
US20100279721A1 (en) 2010-11-04
KR20100119545A (ko) 2010-11-09
CN101483810B (zh) 2010-12-22
JP5778424B2 (ja) 2015-09-16
EP2230801A4 (en) 2012-03-28

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