WO2006053491A1 - Procede de reception de service de diffusion et de multidiffusion - Google Patents

Procede de reception de service de diffusion et de multidiffusion Download PDF

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Publication number
WO2006053491A1
WO2006053491A1 PCT/CN2005/001929 CN2005001929W WO2006053491A1 WO 2006053491 A1 WO2006053491 A1 WO 2006053491A1 CN 2005001929 W CN2005001929 W CN 2005001929W WO 2006053491 A1 WO2006053491 A1 WO 2006053491A1
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Prior art keywords
mbs
map message
information
receiving
received
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PCT/CN2005/001929
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English (en)
French (fr)
Inventor
Jianjun Wu
Zhengfei Xiao
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Huawei Technologies Co., Ltd.
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Application filed by Huawei Technologies Co., Ltd. filed Critical Huawei Technologies Co., Ltd.
Priority to EP05812373A priority Critical patent/EP1809050B1/en
Priority to DE602005009567T priority patent/DE602005009567D1/de
Publication of WO2006053491A1 publication Critical patent/WO2006053491A1/zh
Priority to US11/746,701 priority patent/US7697465B2/en

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/24Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2603Arrangements for wireless physical layer control
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12Messaging; Mailboxes; Announcements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service

Definitions

  • the present invention relates to a receiving technique for a multicast broadcast service in an IEEE 802.16 system, and more particularly to a method for receiving a multicast broadcast service in an IEEE 802.16 system.
  • the IEEE 802.16 protocol defines the wireless metropolitan area network standard for fixed broadband wireless access (BWA).
  • BWA fixed broadband wireless access
  • the standard defines different physical layer technologies for different frequency bands, and its applications are mainly for residential, small office/home office (SOHO), teleworkers, and SME markets.
  • the Medium Access Control Layer can support a very unfavorable user environment, can cope with the application environment of hundreds or thousands of users on each channel, and supports different types of continuous and bursty. Business volume.
  • the IEEE 802.16 system also has an ATM convergence sublayer and a packet convergence sublayer, which can process multiple high-level data units through a convergence sub-layer and encapsulate them into a MAC protocol data unit (MAC PDU) for transmission, thereby implementing ATM, IP, and Ethernet. Protocol transparency processing of network services.
  • MAC PDU MAC protocol data unit
  • CBS cell broadcast service
  • MBS Multicast and Broadcast Service
  • 802.16e/D5 802.16e/D5
  • the introduced MBS service provides a specification for transmitting data from one data source to multiple users in a mobile network, thereby realizing network resource sharing and improving utilization of network resources, especially utilization of air interface resources.
  • the newly provided MBS service can not only realize multicast and broadcast of plain text and low-rate message services, but also realize multicast and broadcast of high-speed multimedia services, which is in line with the trend of future mobile data development.
  • the mobile station (MSS) receiving MBS service needs to be implemented by MBS mapping (MBS_MAP) message.
  • MBS mapping MBS mapping
  • the MBS-MAP message provides a specific Multicast CID, that is, a physical channel resource allocated for the MBS service, in the area identifier (MBS ZONE) of a given MBS, and the physical channel resource includes the occupied OFDM symbol.
  • the MBS_MAP message also provides DIUC, Boosting for use on a given physical channel resource, and provides Next MBS frame offset and Next MBS OFDMA Symbol offset for determining the location of the next MBS service frame.
  • the mobile station when the mobile station (MSS) receives the MBS service for the first time, it first locates the location of the MBS_MAP message according to the MBS_MAP information element (MBS_MAP_IE) in the downlink channel mapping (DL_MAP) message. And determining the physical channel resource and the coding and modulation mode occupied by the MBS-MAP message, and determining the starting location of the MBS Zone; and then the MSS locates the real MBS service according to the MBS service resource and the DIUC specified by the MBS-MAP message. The occupied physical channel resources and the code modulation mode, thereby receiving the MBS service in the MBS Zone.
  • MBS_MAP_IE MBS_MAP information element
  • the MSS can also determine the location of the MBS service at the next moment according to the Next MBS frame offset and the Next MBS OFDMA Symbol offset in the current MBS-MAP message, because 'there is no need to pass the above process of receiving the DL-MAP message. To determine the MBS business office The location is here.
  • the current MBS_MAP message can be used to determine the location of the MBS service at the next moment, in order to receive the MBS service, it is also necessary to determine the physical channel resource and the code modulation mode occupied by the MBS service at the next moment. Therefore, before the next MBS service arrives, the MBS_MAP message related to the MBS service should also be obtained, so as to obtain the physical channel resource and the code modulation mode of the MBS service from the message.
  • the current problem is: Among the MBS-MAP messages specified in the 802.16 protocol, only the Next MBS frame offset and the Next MBS OFDMA Symbol offset are for the next time MBS service, although the information element Next MBS OFDMA Symbol offset can be used to determine The location of the next MBS-MAP message, but the physical channel resource of the next MBS_MAP and the code modulation mode cannot be determined. Therefore, when the MBS service at the next moment arrives, the MSS cannot determine the physical channel resource and the code modulation mode occupied by the MBS_MAP message corresponding to the next-time MBS service according to the currently received MBS_MAP message, and thus cannot be accurate. By locating the next MBS-MAP message, the MSS cannot know the physical channel resources and coding and modulation modes occupied by the MBS service from the MBS-MAP message.
  • the MSS cannot directly determine the physical channel resource and the code modulation mode of the next MBS_MAP message according to the current MBS_MAP message, and therefore cannot directly receive the MBS service.
  • the main problem to be solved by the present invention is to provide a method for receiving an MBS service, so that the MSS can directly receive the MBS service.
  • a method for receiving an MB S_MAP message used by the present invention: adding a next MBS-MAP message to a multicast broadcast service mapping MBS_MAP message Receiving information;
  • the method further includes: after receiving the MBS service according to the received first MBS_MAP message, and after receiving each MBS_MAP message, the mobile station MSS according to the currently received MBS_MAP message and the received reception in the message The information, the received information of the next MBS_MAP message is determined, the next MBS_MAP message is received according to the determined information, and then the MBS service is received according to the received MBS_MAP message.
  • the received information of the first MBS_MAP message received by the MSS is determined according to a downlink channel mapping DL_MAP message.
  • the received information of the determined MBS_MAP message includes: a location of the MBS_MAP message, a physical channel resource, and a coded modulation mode.
  • the received information added in the MBS_MAP message may be: the physical channel resource occupied by the next MBS-MAP message;
  • the method further includes: setting all MBS-MAP messages to use the same coded modulation scheme.
  • the physical channel resources occupied by the next MBS_MAP message include: a subchannel offset of the next MBS_MAP message, an OFDMA symbol offset of the next MBSJ AP message, and a subchannel of the next MBS_MAP message. number.
  • the determining the receiving information of the next MBS_MAP message includes:
  • the physical channel resource of the next MBS_MAP message is determined according to the received information added in the currently received MBS_MAP message; and the coded modulation mode used by the first MBS_MAP message is used as the coded modulation mode of the next MBS_MAP message.
  • the received information added in the MBS_MAP message may also be: a coded modulation mode used by the next MBS_MAP message;
  • the method further includes: setting all MBS-MAP messages to use the same physical channel resource.
  • the determining the received information of the next MBSJVIAP message includes: using the physical channel resource occupied by the first MBS_MAP message as the physical channel resource of the next MBS_MAP message; and receiving the added information according to the currently received MBS_MAP message. Determine the code modulation mode of the next MBS_MAP message.
  • the received information added in the MBS-MAP message may also be: the physical channel resource used by the next MBS-MAP message, and the coding modulation method used.
  • the receiving information for determining the next MBS_MAP message includes:
  • the physical channel resource and the code modulation mode of the next MBS_MAP message are determined according to the received information added in the currently received MBS_MAP message.
  • Determining, according to the currently received MBS_MAP message, the received information in the next MBS_MAP message is: determining the next MBS_MAP message according to the location information of the next MBS_MAP message included in the currently received MB S_MAP message. Location information.
  • the method further comprises: adding power offset information of the next MB S-MAP message in the IBS_MAP message;
  • the MSS Before receiving the next MBS_MAP message according to the determined information, the MSS further includes: determining power offset information of the next MBS_MAP message according to the currently received MBS_MAP message, and then according to the power offset information And the previously determined information receives the next MBS-MAP message.
  • the method further comprises: adding, in the MBS_MAP message, the repeated coding indication information of the next MBS_MAP message;
  • the method further includes: determining, according to the currently received MBS_MAP message, a repetition coding indication of the next MBS_MAP message, and then determining according to the repeated coding indication and the previous determination The information receives the next MB S-MAP message.
  • Another method of receiving an MBS-MAP message of the present invention setting in a system Receiving information of the MBS_MAP message; the method further comprises: after receiving the MBS service according to the received first MBS_MAP message, and after receiving each MBS_MAP message, the MSS according to the currently received MBS_MAP message and the The setting determines the reception information of the next MBS_MAP message, receives the MBS_MAP message according to the determined information, and receives the MBS service according to the MBS_MAP message.
  • the MSS determines the receiving information of the MBS_MAP message according to the setting.
  • the MSS determines the received information of the first MBS-MAP message according to the MBS-MAP message related information carried in the received DL_MAP message.
  • the set receiving information includes: a physical channel resource and a coded modulation mode; and determining, according to the setting, the received information is:
  • the physical channel resource and the coded modulation mode are determined according to the set physical channel resource and the coded modulation mode.
  • the determining, according to the currently received MBS_MAP message, the receiving information of the next MBS_MAP message is:
  • the location information of the next MBS_MAP message is determined according to the location information of the next MBS_MAP message included in the currently received MBS_MAP message.
  • the third method for receiving the multicast broadcast service of the present invention setting the received information of the MBS service in the system, the method further includes: when receiving the MBS service, the MSS determines the received information of the MBS service according to the setting, And receiving the MBS service according to the received information.
  • the receiving information of the setting MBS service is: set when the MSS applies for the MBS service; and the MSS determines that the receiving information of the MBS service is: the MSS determines the receiving information of the MBS service according to the setting.
  • the receiving information of the setting MBS service is: setting the receiving information of the MBS service in the DL-MAP message;
  • the MSS determines that the received information of the MBS service is:
  • the MSS determines the received information according to the received DL_MAP message.
  • the received information of the MBS service includes: a physical channel resource of the MBS service and a code modulation mode.
  • the solution of the present invention adds the receiving information of the next MBS_MAP message to the message, so that after receiving the first MBS_MAP message according to the DL-MAP message, the MSS can follow the currently received MBS_MAP message to the subsequent MBS.
  • the MAP message is received so that the MSS no longer receives the MBS-MAP message through the DL-MAP message.
  • the solution of the present invention also enables the base station providing the MBS service at different times to use different physical channel resources by setting the physical channel resource of the next MBS_MAP message in the MBS_MAP message; by setting the next MBS_MAP message in the MBS_MAP message.
  • the coding mode is such that base stations providing MBS services at different times can use different coding modulation modes.
  • the physical channel resource and the code modulation mode can also be set at the same time, so that the base station providing the MBS service at different times can simultaneously use different physical channel resources and the code modulation mode.
  • the present invention also provides a scheme for setting all MBS_MAP messages in the system in the same physical channel resource and code modulation mode in advance, and the scheme does not need to make any changes to the MBS_MAP message, and the implementation is more simple.
  • the solution of the present invention also provides a scheme for adopting the same physical channel resource and code modulation mode in setting all MBS services in advance, so that the MSS can directly receive the MBS service without receiving the MBS_MAP message for receiving.
  • Mode for Carrying Out the Invention The present invention will be further described in detail below with reference to specific embodiments.
  • the solution of the present invention may be: adding the MBS_MAP message to add the received information of the next MBS_MAP message in the MBS_MAP message, and after obtaining the MBS_MAP message, the MSS determines the location of the next MBS_MAP message, and according to the information carried in the message.
  • the received information of the next MBS_MAP message receives the next MBS_MAP message, and then receives the MBS service according to the MBS_MAP message.
  • the received information added to the MBS_M AP message may include only physical channel resource information, or may only include coded modulation mode information, and may also include physical channel resource information and coded modulation mode information.
  • the MSS may also use the code modulation mode adopted by the first received MB S_MAP message as the MBS_MAP message.
  • the coding mode is modulated so that the next MBS-MAP message can be received.
  • the specific implementation is similar to the previous process of only adding the physical channel resource. Only in this processing mode, the physical channel resources used by all MBS_MAP messages should be specified. For example, all MBS-MAP messages can be specified to use the same physical channel resources.
  • the MSS may also use the object used for the first received MBS_MAP message.
  • the channel resource is used as the physical channel resource of the MBS_MAP message, so that the reception of the next MBS-MAP message can be realized.
  • the MSS can directly determine the location of the next MBS_MAP message, the physical channel resource, and the information element carried in the current MBS-MAP message.
  • the modulation mode is encoded, so the MSS can directly receive the next MBS-MAP message based on this information.
  • the physical channel resources added in the MBS-MAP message may be: a sub-channel offset of the next MBS-MAP message (Next MBS-MAP Subchannel offset), and an OFDMA symbol offset of the next MBS-MAP message (Next) MBS_MAP No. OFDMA Symbols ) and the number of sub-channels of the next MBS-MAP message ( Next MBS - MAP No. Subchannels ).
  • Next MBS OFDMA Symbol offset already carried in the existing MBS_MAP message, the physical channel resources occupied by the next MBS-MAP message can be clearly determined.
  • the code modulation mode added in the MBS_MAP message may specifically be: Next MBS_MAP DIUC of the next MBS-MAP message, and the MSS may be based on the Next MBS-MAP DIUC carried in the MBS_MAP message. Determine the code modulation mode occupied by the next MB S-MAP message.
  • the power offset for the next MBS_MAP message and the information element for ensuring that the next MBS_MAP message is reliably received may also be added in the MBS_MAP message.
  • the information element Next MBS_MAP Boosting is added for the power offset
  • the information element Next MBS_MAP Repetition Coding Indication is added for reliable reception.
  • the MSS can also determine the power offset of the next MBS_MAP message according to the current MBS_MAP message. The coding indication is repeated so that the next MBS-MAP message can be better received.
  • the foregoing process is to add an information element for receiving the next MBS_MAP message in the MBS_MAP message.
  • all the MBS-MAP messages occupy the same physical channel in advance. Resources and use the same The code modulation method.
  • the MSS can determine the physical channel resource and the code modulation mode used by the MBS-MAP message according to the previous settings, and then determine the location of the next MBS-MAP message according to the currently received MBS_MAP message, and then according to The determined location, physical channel resource, and coded modulation mode receive the next MBS_MAP message, and then receive the MBS service through the MBS_MAP message.
  • the receiving, by the MSS, the MBS_MAP message according to the physical channel resource and the coded modulation mode may be: the MSS determines the physical channel resource and the code modulation mode used by the MBS-MAP message when applying for the MBS service, and receives the MBS_MAP message.
  • the receiving, by the MSS, the MBS_MAP message according to the physical channel resource and the coded modulation mode may be: the MSS determines the physical channel used by all the MBS_MAP messages according to the physical channel resource and the coded modulation mode of the MBS_MAP message carried in the received DL_MAP message. The resource and code modulation mode, and receive the MBS_MAP message.
  • the MSS is also required to receive the first MBS-MAP message by receiving the DL-MAP message.
  • the MSS when the MSS applies for the MBS service, the physical channel resource and the code modulation mode are set for the service. After receiving the MBS service, the MSS can determine the physical channel resource and code modulation of the MBS service according to the previous setting. The method then receives the MBS service based on the information.
  • Another processing scheme is: setting a physical channel resource and a code modulation mode of the MBS service in the DL_MAP message, specifically, setting this in the MBS_MAP_IE in the DL_MAP message, therefore, the MSS can be based on the DL-MAP.
  • the message determines the physical channel resource and code modulation mode of the MBS service. In this way, the MSS can directly receive the MBS service according to the DL_MAP message without receiving the MBS-MAP message.

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Description

接收组播广播业务的方法 技术领域
本发明涉及 IEEE 802.16系统中组播广播业务的接收技术, 更确切 地说是涉及 IEEE 802.16系统中的接收组播广播业务的方法。 发明背景
IEEE 802.16协议定义了固定宽带无线接入(BWA ) 的无线城域网 标准。 该标准针对不同频段定义了不同的物理层技术, 其应用范围主要 是面向住宅、 小办公室 /家庭办公室 (SOHO )、 远程工作者, 以及 SME 市场。
IEEE 802.16系统中, 媒体接入控制层(MAC ) 能够支持很不利的 用户环境, 能够应付在每个信道上可能有成百上千个用户的应用环境, 支持连续式和突发式等不同的业务量。 IEEE 802.16系统还具有 ATM汇 聚子层和分组汇聚子层, 能够将多个高层数据单元经汇聚子层处理而封 装成一个 MAC协议数据单元( MAC PDU )发送,从而可以实现对 ATM、 IP和以太网业务的协议透明性处理。
由以上描述可知, 基于 IEEE 802.16协议的系统具有很好的应用前 景。
在目前的通信系统中, 组播和广播是一种从一个数据源向多个目标 传送数据的技术。 在传统的移动网络中, 小区广播业务 (CBS , Cell Broadcast Service )允许低比特率的数据通过小区共享的广播信道向所有 用户发送, 属于消息类业务。
为有效利用移动网络资源, 在 IEEE 802.16 的最新协议 IEEE 802.16e/D5 中也引入了组播广播业务(MBS , Multicast and Broadcast Service )。 所引入的 MBS业务提供了在移动网络中由一个数据源向多个 用户发送数据的规范, 由此可以实现网络资源共享, 提高网络资源的利 用率, 尤其是空口接口资源的利用率。 新提供的 MBS业务不仅能实现 纯文本、 低速率的消息类业务的组播和广播, 还能实现高速多媒体业务 的组播和广播, 顺应了未来移动数据发展的趋势。
移动台 ( MSS )接收 MBS业务需要通过 MBS映射( MBS_MAP ) 消息实现。 MBS— MAP消息的信息元如表 1所示。
Figure imgf000003_0001
Figure imgf000004_0001
由表 1可知, MBS一 MAP消息提供了在给定 MBS的区域标识(MBS ZONE )中为具体的 Multicast CID, 也即为 MBS业务分配的物理信道资 源, 该物理信道资源包括所占用的 OFDM符号和所使用的子信道, MBS_MAP 消息还提供了在给定物理信道资源上所使用的 DIUC、 Boosting,并提供了用于确定下一个 MBS业务帧位置的 Next MBS frame offset及 Next MBS OFDMA Symbol offset。
基于上述 MBS_MAP消息, 移动台 (MSS )在第一次接收 MBS业 务时, 首先要根据下行信道映射( DL_MAP )消息中的 MBS_MAP信息 元 ( MBS— MAP_IE ) 定位出 MBS— MAP 消息所处的位置, 并确定 MBS一 MAP消息所占用的物理信道资源以及编码调制方式, 同时还可以 确定 MBS Zone的开始地点; 然后 MSS再根据 MBS— MAP消息所指定 的 MBS业务资源以及 DIUC, 定位真正的 MBS业务所占用的物理信道 资源以及编码调制方式, 从而接收该 MBS Zone中的 MBS业务。 MSS 同时还可以根据当前 MBS— MAP消息中的 Next MBS frame offset及 Next MBS OFDMA Symbol offset确定下一时刻的 MBS业务所处的位置, 因' 此就不用再通过上述接收 DL— MAP消息的处理过程来确定 MBS业务所 处的位置了。
虽然通过当前的 MBS—MAP消息可以确定下一时刻的 MBS业务所 处的位置, 但要想实现对 MBS业务的接收, 还需要确定下一时刻 MBS 业务所占用的物理信道资源以及编码调制方式。 因此, 在下一个 MBS 业务到来之前, 还应该获取与该 MBS业务相关的 MBS_MAP消息, 以 从该消息中获取该 MBS业务的物理信道资源以及编码调制方式。
目前的问题在于: 802.16协议中规定的 MBS— MAP 消息中, 只有 Next MBS frame offset及 Next MBS OFDMA Symbol offset是针对下一时 刻的 MBS业务的 , 虽然利用其中的信息元 Next MBS OFDMA Symbol offset可以确定下一个 MBS一 MAP消息的位置, 但是并不能确定下一个 MBS_MAP 的物理信道资源以及编码调制方式。 因此, 在下一时刻的 MBS业务到来时, MSS根据当前已接收的 MBS_MAP消息, 是无法确 定与该下一时刻 MBS业务对应的 MBS_MAP消息所占用的物理信道资 源以及编码调制方式的, 也就不能准确定位该下一个 MBS— MAP消息, MSS也就不能从 MBS— MAP消息中得知 MBS业务所占用的物理信道资 源及编码调制方式。
综上所述, 基于目前的技术方案, MSS 不能直接根据当前的 MBS_MAP消息确定下一个 MBS— MAP消息的物理信道资源及编码调制 方式, 因此不能直接接收 MBS业务。 发明内容
有鉴于此, 本发明所要解决的主要问题在于提供一种接收 MBS业务 的方法, 以使 MSS可以直接对 MBS业务进行接收。
为解决以上问题,本发明所采用的一种接收 MB S_MAP消息的方法: 在组播广播业务映射 MBS— MAP消息中增加下一个 MBS— MAP消息的接 收信息;
该方法进一步包括: 移动台 MSS在根据接收到的第一个 MBS— MAP 消息接收 MBS业务后, 并在接收之后的每个 MBS_MAP消息时, 根据当 前接收的 MBS_MAP消息以及该消息中所增加的接收信息, 确定下一个 MBS— MAP消息的接收信息, 根据所述确定的信息接收下一个 MBS—MAP消息 , 之后根据所接收的 MBS— MAP消息接收 MBS业务。
较佳地, 所述 MSS接收的第一个 MBS— MAP消息的接收信息根据下 行信道映射 DL— MAP消息确定。
较佳地, 所述确定的 MBS_MAP消息的接收信息包括: MBS_MAP 消息的位置、 物理信道资源以及编码调制方式。
在 MBS— MAP消息中增加的接收信息可以为: 下一个 MBS— MAP消 息所占用的物理信道资源;
该方法进一步包括: 设定所有 MBS—MAP消息采用相同的编码调制 方式。
较佳地, 所述下一个 MBS_MAP消息所占用的物理信道资源包括: 下一个 MBS— MAP 消息的子信道偏移、 下一个 MBSJ AP 消息的 OFDMA符号偏移及下一个 MBS—MAP消息的子信道数目。
则所述确定下一个 MBS—MAP消息的接收信息包括:
根据当前接收的 MBS_MAP消息中所增加的接收信息确定下一个 MBS一 MAP消息的物理信道资源; 并将第一个 MBS_MAP消息所使用的 编码调制方式作为下一个 MBS_MAP消息的编码调制方式。
在 MBS—MAP消息中增加的接收信息还可以为: 下一个 MBS—MAP 消息所采用的编码调制方式;
该方法进一步包括: 设定所有 MBS—MAP消息使用相同的物理信道 资源。 则所述确定下一个 MBSJVIAP消息的接收信息包括: 将第一个 MBS_MAP消息所占用的物理信道资源作为下一个 MBS— MAP消息的物理信道资源; 并根据当前接收的 MBS_MAP消息中 所增加的接收信息确定下一个 MBS_MAP消息的编码调制方式。
在 MBS— MAP消息中增加的接收信息也可以为: 下一个 MBS— MAP 消息所使用的物理信道资源, 以及所采用的编码调制方式。
则所述确定下一个 MBS_MAP消息的接收信息包括:
根据当前接收的 MBS—MAP消息中所增加的接收信息确定下一个 MBS—MAP消息的物理信道资源及编码调制方式。
所述根据当前接收的 MBS_MAP消息确定下一个 MBS— MAP消息中 的接收信息为: 根据当前接收的 MB S—MAP消息中包括的下一个 MBS— MAP消息的位置信息, 确定下一个 MBS— MAP消息的位置信息。
较佳地, 该方法进一步包括: 在] IBS— MAP消息中增加下一个 MB S—MAP消息的功率偏置信息;
所述 MSS在根据所述确定的信息接收下一个 MBS— MAP消息之前, 进一步包括: 根据当前接收的 MBS— MAP消息确定下一个 MBS— MAP消 息的功率偏置信息, 之后根据该功率偏置信息以及之前所确定的信息接 收下一个 MBS— MAP消息。
较佳地, 该方法进一步包括: 在 MBS— MAP消息中增加下一个 MBS_MAP消息的重复编码指示信息;
所述 MSS在根据所述确定的信息接收下一个 MBS— MAP消息之前, 进一步包括: 根据当前接收的 MBS— MAP消息确定下一个 MBS_MAP消 息的重复编码指示, 之后根据该重复编码指示以及之前所确定的信息接 收下一个 MB S一 MAP消息。
本发明的另一种接收 MBS— MAP消息的方法: 在系统中设定 MBS_MAP消息的接收信息; 该方法进一步包括: MSS在根据接收到的 第一个 MBS—MAP消息接收 MBS业务后, 并在接收之后的每个 MBS— MAP消息时, 根据当前接收的 MBS_MAP消息及所述设定确定下 一个 MBS— MAP消息的接收信息, 根据所确定的信息接收 MBS_MAP消 息, 并根据该 MBS— MAP消息来接收 MBS业务。
较佳地, 所述 MSS 在申请 MBS 业务时, 根据所述设定确定 MBS—MAP消息的接收信息。
较佳地, 所述 MSS 根据接收到的 DL_MAP 消息中所携带的 MBS—MAP消息相关信息, 确定第一个 MBS—MAP消息的接收信息。
较佳地, 所述设定的接收信息包括: 物理信道资源及编码调制方式; 贝 |J根据所述设定确定接收信息为:
根据所述设定的物理信道资源及编码调制方式确定物理信道资源及 编码调制方式。
较佳地, 所述根据当前接收的 MBS_MAP 消息确定下一个 MBS_MAP消息的接收信息为:
根据当前接收的 MBS—MAP消息中包括的下一个 MBS—MAP消息的 位置信息, 确定下一个 MBS_MAP消息的位置信息。
本发明的第三种接收组播广播业务的方法: 在系统中设定 MBS业务 的接收信息, 该方法进一步包括: MSS在接收 MBS业务时, 根据所述设 定确定该 MBS业务的接收信息, 并根据该接收信息接收 MBS业务。
所述设定 MBS业务的接收信息为: 在 MSS申请 MBS业务时设定; 所述 MSS确定 MBS业务的接收信息为: MSS根据所述设置确定该 MBS业务的接收信息。
所述设定 MBS业务的接收信息为:在 DL—MAP消息中设定 MBS业务 的接收信息; 所述 MSS确定 MBS业务的接收信息为: MSS根据接收到的 DL_MAP 消息确定所述接收信息。
所设定的 MBS业务的接收信息包括: MBS业务的物理信道资源以及 编码调制方式。
本发明方案通过在消息中增加下一个 MBS— MAP消息的接收信息, 使得 MSS在根据 DL— MAP消息接收到第一个 MBS_MAP消息后 , 即可根 据当前接收到的 MBS— MAP消息对后续的 MBS— MAP消息进行接收, 从 而使得 MSS不用再通过 DL— MAP消息来接收 MBS— MAP消息。 这对于处 于空闲状态的 MSS来说, 就不需要再去接收 DL— MAP消息了, 而是可以 直接到无线帧的 MBS业务区域去接收 MBS业务即可,使得处于空闲状态 的 MSS能更加省电。
本发明方案还通过在 MBS— MAP消息中设置下一个 MBS_MAP消息 的物理信道资源, 使得在不同时刻提供 MBS业务的基站可以使用不同的 物理信道资源; 通过在 MBS_MAP消息中设置下一个 MBS— MAP消息的 编码调制方式, 使得在不同时刻提供 MBS业务的基站可以使用不同的编 码调制方式。 当然, 还可以同时设置物理信道资源及编码调制方式, 使 得在不同时刻提供 MBS业务的基站可以同时使用不同物理信道资源以 及编码调制方式。
本发明还提供了事先在系统中设定所有 MBS_MAP消息采用相同物 理信道资源及编码调制方式的方案, 该方案不用对 MBS_MAP消息作任 何改动, 实现起来更为筒单。
另外, 本发明方案还提供了事先在设定所有 MBS业务采用相同的物 理信道资源及编码调制方式的方案, 使得 MSS可以直接对 MBS业务进行 接收, 而不用再依赖 MBS_MAP消息进行接收了。 实施本发明的方式 下面结合具体实施例对本发明方案作进一步详细的说明。
本发明方案可以是通过修改 MBS_MAP消息, 在 MBS_MAP消息中 增加下一个 MBS— MAP消息的接收信息, MSS在获取 MBS_MAP消息后, 确定下一个 MBS— MAP消息的位置, 并根据该消息中所携带的下一个 MBS_MAP消息的接收信息来接收下一个 MBS_MAP消息 , 之后再根据 该 MBS— MAP消息对 MBS业务进行接收。
具体来说, 在 MBS_M AP消息中增加的接收信息可以只包含物理信 道资源信息, 也可以是只包含编码调制方式信息, 当然也可以同时包含 物理信道资源信息及编码调制方式信息。
下面分别对这三种处理方式进行详细说明。
对于只在 MBS— MAP消息中增加物理信道资源的处理方式来说, 为 实现通过当前的 MBS一 MAP消息对下一个 MBS_MAP消息的接收, 则需 要对所有 MBS_MAP消息的编码调制方式进行规定, 比如, 可以规定所 有 MBS_MAP消息采用同一种编码调制方式。 这样, MSS在从当前的 MBS— MAP消息中确定了下一个 MBS— MAP消息的物理信道资源后, 还 可以将第一次接收的 MB S— MAP消息所采用的编码调制方式作为 MBS— MAP消息的编码调制方式, 从而可以实现对下一个 MBS— MAP消 息的接收。
对于只在 MBS_MAP消息中增加编码调制方式的处理方式来说, 其 具体实现与之前只增加物理信道资源的处理过程类似。 只是在本处理方 式中, 应该对所有 MBS_MAP消息所釆用的物理信道资源进行规定, 比 如, 可以规定所有的 MBS— MAP消息使用相同的物理信道资源。 通过这 些设置 , MSS在从当前的 MBS一 MAP消息中确定下一个 MBS_MAP消息 的编码调制方式后, 还可以将第一次接收的 MBS_MAP消息所采用的物 理信道资源作为 MBS_MAP消息的物理信道资源, 从而可以实现对下一 个 MBS—MAP消息的接收。
对于在 MBS— MAP消息中同时增加物理信道资源及编码调制方式的 处理方式来说, MSS可以直接从当前的 MBS— MAP消息所携带的信息元 中确定下一个 MBS_MAP消息的位置、物理信道资源以及编码调制方式, 因此 MSS可以根据这些信息直接对下一个 MBS— MAP消息进行接收。
上述对三种具体的处理方式作了详细的说明。 其中, 在 MBS— MAP 消息中增加的物理信道资源具体可以为: 下一个 MBS— MAP消息的子信 道偏移( Next MBS—MAP Subchannel offset )、 下一个 MBS— MAP消息的 OFDMA符号偏移 (Next MBS_MAP No. OFDMA Symbols ) 及下一个 MBS— MAP消息的子信道数目 ( Next MBS— MAP No. Subchannels ) 。 通 过这几个信息元以及现有的 MBS_MAP消息中已经携带的 Next MBS OFDMA Symbol offset,可以清楚地确定下一个 MBS— MAP消息所占用的 物理信道资源。 在 MBS—MAP消息中增加的编码调制方式具体可以为: 下一个 MBS—MAP消息的调制编码方式(Next MBS—MAP DIUC ) , MSS 即可根据 MBS— MAP消息中所携带的 Next MBS— MAP DIUC确定下一个 MB S— MAP消息所占用的编码调制方式。
另外, 在上述三种实现方式中, 还可以在 MBS_MAP消息中增加针 对下一个 MBS—MAP消息的功率偏置, 以及用于保证下一个 MBS—MAP 消息可靠接'收的信息元。 比如, 针对功率偏置增加信息元 Next MBS—MAP Boosting , 针对可靠接收增加信息元 Next MBS—MAP Repetition Coding Indication 这样, MSS还可以根据当前的 MBS—MAP 消息确定下一个 MBS_MAP消息的功率偏置及重复编码指示, 从而能够 更好地接收下一个 MBS—MAP消息。
同时增加了物理信道资源、 编码调制方式、 功率偏置以及重复编码 指示后的 MBS— MAP消息的消息结构如表 2所示。
Figure imgf000012_0001
表 2
上述处理是在 MBS— MAP 消息中增加用以接收下一个 MBS— MAP 消息的信息元, 实际上, 还可以不用对 MBS_MAP消息作处理, 而是事 先规定所有的 MBS— MAP消息占用相同的物理信道资源,并且采用相同 的编码调制方式。 这样, MSS 即可根据之前的设定来确定 MBS—MAP 消息所采用的物理信道资源及编码调制方式, 之后再根据当前接收的 MBS—MAP消息来确定下一个 MBS— MAP消息的位置,然后根据所确定 的位置、 物理信道资源及编码调制方式来接收下一个 MBS_MAP消息, 再通过该 MBS—MAP消息来接收 MBS业务。
其中, MSS 根据物理信道资源及编码调制方式来接收 MBS_MAP 消息具体可以是: MSS在申请 MBS业务时确定 MBS—MAP消息所采用 的物理信道资源及编码调制方式, 并对 MBS—MAP消息进行接收。
MSS根据物理信道资源及编码调制方式来接收 MBS_MAP消息还 可以是: MSS根据接收到的 DL_MAP消息中所携带的 MBS—MAP消息 的物理信道资源及编码调制方式,确定所有 MBS_MAP消息所采用的物 理信道资源及编码调制方式, 并对 MBS_MAP消息进行接收。 这里, 还 需要 MSS通过接收 DL—MAP消息来接收第一次 MBS一 MAP消息。
另外, 还可以在 MSS申请 MBS业务时, 为该业务设定物理信道资 源及编码调制方式, 之后, MSS在接收 MBS业务时, 即可根据之前的 设置确定该 MBS业务的物理信道资源及编码调制方式, 然后再根据该 信息来接收 MBS业务。
还有一种处理方案是: 在 DL— MAP消息中设置 MBS业务的物理信道 资源及编码调制方式,具体可以是在 DL_MAP消息中的 MBS_MAP一 IE中 作此设置, 因此, MSS即可根据 DL— MAP消息确定 MBS业务的物理信道 资源及编码调制方式。 这样, MSS就可以直接根据 DL_MAP消息对 MBS 业务进行接收, 而不用接收 MBS—MAP消息了。
在具体的实施过程中可对本发明的方法进行适当的改进, 以适应具 体情况的具体需要。 因此可以理解, 根据本发明的具体实施方式只是起 示范作用, 并不用以限制本发明的保护范围。

Claims

权利要求书
1、 一种接收组播广播业务的方法, 其特征在于, 在组播广播业务映 射 MBS— MAP消息中增加下一个 MBS_MAP消息的接收信息;
该方法进一步包括:移动台 MSS在根据接收到的第一个 MBS— MAP 消息接收 MBS业务后, 并在接收之后的每个 MBS一 MAP消息时, 根据 当前接收的 MBS_MAP消息以及该消息中所增加的接收信息,确定下一 个 MBS—MAP 消息的接收信息, 根据所述确定的信息接收下一个 MBS—MAP消息, 之后根据所接收的 MBS— MAP消息接收 MBS业务。
2、 根据权利要求 1所述的方法, 其特征在于, 所述 MSS接收的第一 个 MBS—MAP消息的接收信息根据下行信道映射 DL— MAP消息确定。
3、 根据权利要求 1 或 2 所述的方法, 其特征在于, 所述确定的 MBS_MAP消息的接收信息包括: MBS_MAP消息的位置、 物理信道资 源以及编码调制方式。
4、 根据权利要求 1所述的方法, 其特征在于, 在 MBS_MAP消息 中增加的接收信息为: 下一个 MBS—MAP消息所占用的物理信道资源; 该方法进一步包括:设定所有 MBS—MAP消息采用相同的编码调制 方式。
5、根据权利要求 4所述的方法,其特征在于,所述下一个 MBS—MAP 消息所占用的物理信道资源包括: 下一个 MBS—MAP 消息的子信道偏 移、下一个 MBS—MAP消息的正交频分多址 OFDMA符号偏移及下一个 MBS_MAP消息的子信道数目。
6、 根据权利要求 4 所述的方法, 其特征在于, 所述确定下一个 MBS—MAP消息的接收信息包括:
根据当前接收的 MBS—MAP 消息中所增加的接收信息确定下一个 MBS MAP消息的物理信道资源;并将第一个 MBS MAP消息所使用的 编码调制方式作为下一个 MBS_MAP消息的编码调制方式。
7、 根据权利要求 1所迷的方法, 其特征在于, 在 MBS— MAP消息 中增加的接收信息为: 下一个 MBS— MAP消息所采用.的编码调制方式; 该方法进一步包括:设定所有 MBS_MAP消息使用相同的物理信道 资源。
8、 根据权利要求 7 所述的方法, 其特征在于, 所述确定下一个 MBS_MAP消息的接收信息包括:
将第一个 MBS_MAP 消息所占用的物理信道资源作为下一个 MBS— MAP消息的物理信道资源;并根据当前接收的 MBS— MAP消息中 所增加的接收信息确定下一个 MBS一 MAP消息的编码调制方式。
9、 根据权利要求 1所述的方法, 其特征在于, 在 MBS_MAP消息 中增加的接收信息为: 下一个 MBS_MAP消息所使用的物理信道资源, 以及所采用的编码调制方式。
10、 根据权利要求 9 所述的方法, 其特征在于, 所述确定下一个 MBS— MAP消息的接收信息包括:
根据当前接收的 MBS— MAP 消息中所增加的接收信息确定下一个 MBS_MAP消息的物理信道资源及编码调制方式。
11、 根据权利要求 1所述的方法, 其特征在于, 所述根据当前接收 的 MBS_MAP消息确定下一个 MBS_MAP消息中的接收信息为: 根据 当前接收的 MBS— MAP消息中包括的下一个 MBS_MAP消息的位置信 息, 确定下一个 MBS— MAP消息的位置信息。
12、根据权利要求 1、 2和 4至 10中任一所述的方法, 其特征在于, 该方法进一步包括: 在 MBS一 MAP消息中增加下一个 MBS一 MAP消息 的功率偏置信息;
所述 MSS在根据所述确定的信息接收下一个 MBS一 MAP消息之前, 进一步包括: 根据当前接收的 MBS— MAP 消息确定下一个 MBS—MAP 消息的功率偏置信息, 之后根据该功率偏置信息以及之前所确定的信息 接收下一个 MBS— MAP消息。
13、根据权利要求 1、 2和 4至 10中任一所述的方法, 其特征在于, 该方法进一步包括: 在 MBS一 MAP消息中增加下一个 MBS_MAP消息 的重复编码指示信息;
所述 MSS在根据所述确定的信息接收下一个 MBS— MAP消息之前, 进一步包括: 根据当前接收的 MBS— MAP 消息确定下一个 MBS一 MAP 消息的重复编码指示, 之后根据该重复编码指示以及之前所确定的信息 接收下一个 MBS— MAP消息。
14、 一种接收组播广播业务的方法, 其特征在于, 在系统中设定 MB S_MAP消息的接收信息;
该方法进一步包括: MSS在根据接收到的第一个 MBS_MAP消息接 收 MBS业务后, 并在接收之后的每个 MBS— MAP消息时, 根据当前接 收的 MBS一 MAP消息及所述设定确定下一个 MBS_MAP消息的接收信 息, 根据所确定的信息接收 MBS_MAP消息, 并根据该 MBS— MAP消 息来接收 MBS业务。
15、 根据权利要求 14所述的方法, 其特征在于, 所述 MSS在申请 MBS业务时, 根据所述设定确定 MBS— MAP消息的接收信息。
16、 根据权利要求 14所述的方法, 其特征在于, 所述 MSS根据接 收到的 DL一 MAP消息中所携带的 MBS_MAP消息相关信息, 确定第一 个 MBS_MAP消息的接收信息。
17、 根据权利要求 14至 16中任一所述的方法, 其特征在于, 所述 设定的接收信息包括: 物理信道资源及编码调制方式;
则根据所述设定确定接收信息为: 根据所述设定的物理信道资源及编码调制方式确定物理信道资源及 编码调制方式。
18、 根据权利要求 14至 16中任一所述的方法, 其特征在于, 所述 根据当前接收的 MBS— MAP消息确定下一个 MBS— MAP消息的接收信 息为:
根据当前接收的 MBS— MAP消息中包括的下一个 MBS_MAP消息 的位置信息, 确定下一个 MBS— MAP消息的位置信息。
19、 一种接收组播广播业务的方法, 其特征在于, 在系统中设定 MBS业务的接收信息, 该方法进一步包括: MSS在接收 MBS业务时, 根据所述设定确定该 MBS 业务的接收信息, 并根据该接收信息接收 MBS业务。
20、 根据权利要求 19所述的方法, 其特征在于, 所述设定 MBS业 务的接收信息为: 在 MSS申请 MBS业务时设定;
所述 MSS确定 MBS业务的接收信息为: MSS根据所述设置确定该 MBS业务的接收信息。
21、 根据权利要求 19所述的方法, 其特征在于, 所述设定 MBS业 务的接收信息为: 在 DL— MAP消息中设定 MBS业务的接收信息;
所述 MSS 确定 MBS 业务的接收信息为: MSS 根据接收到的 DL_MAP消息确定所述接收信息。 .
22、 根据权利要求 19至 21中任一所述的方法, 其特征在于, 所设 定的 MBS业务的接收信息包括: MBS业务的物理信道资源以及编码调 制方式。
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EP1809050B1 (en) 2008-09-03
CN1777297A (zh) 2006-05-24
US20070268933A1 (en) 2007-11-22
DE602005009567D1 (de) 2008-10-16
US7697465B2 (en) 2010-04-13
CN100355299C (zh) 2007-12-12
KR20070085730A (ko) 2007-08-27
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ATE407520T1 (de) 2008-09-15

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