Method, System and Apparatus for Providing Modulation and Coding Mode used by Multicast Service Macro Diversity

Abstract

A method, system and apparatus are provided for modulation and coding mode used by multicast service macro diversity. A message containing relevant information of modulation and coding mode(s) used by an MBS zone is sent in the MBS zone. The MS receives the message, analyzes other messages in the MBS zone according to the relevant information of the modulation and coding mode(s) contained in this message, and receives MBS service data according to the analyzed result upon other messages in the MBS zone. The invention resolves the problem that an entity is required to uniformly manage the coding and modulation mode definition of each cell in the prior art, as well as the problem that the DCD count in the DL-MAP message has to be continuously tracked in the prior art.

1 . A method for providing modulation and coding mode information used for multicast service macro diversity, comprising:
 sending, by a base station, a message which defines DIUC-relevant information of modulation and coding mode(s) indicated by a downlink interval usage code (DIUC) and used in a multicast and broadcast service (MBS) zone;   wherein said message is contained in the MBS zone of a downlink frame.   
     
     
         2 . The method according to  claim 1 , wherein the message is an MBS downlink channel description (MBS-DCD) message. 
     
     
         3 . The method according to  claim 1 , further comprising: sending, by the base station, a MBS-MAP message comprising an information element (IE) indicating an update of the message. 
     
     
         4 . The method according to  claim 1 , further comprising: sending a MBS-MAP message defining a transmitting position of the message. 
     
     
         5 . The method according to  claim 1 , wherein the DIUC-relevant information comprises at least one definition and index of the downlink interval usage code (DIUC). 
     
     
         6 . A method for providing modulation and coding mode used by multicast service macro diversity, comprising:
 sending, by a base station, a downlink channel description (DCD) message defining DIUC-relevant information of a downlink interval usage code (DIUC) used by a downlink burst; and   sending, by the base station, a MBS-MAP message in a multicast and broadcast service (MBS) zone comprising an information element (IE) indicating the update of the DCD message.   
     
     
         7 . The method according to  claim 6 , wherein the DIUC-relevant information includes at least one definition and index of the downlink interval usage code (DIUC). 
     
     
         8 . A base station, comprising:
 a transmitter, configured to send a message which defines DIUC-relevant information of modulation and coding mode(s) indicated by a downlink interval usage code (DIUC), and configured to send a multicast and broadcast service map (MBS-MAP) message in a multicast and broadcast service (MBS) zone;   the MBS-MAP message comprising an information element (IE) indicating an update of the message.   
     
     
         9 . The base station according to  claim 8 , wherein the message which defines DIUC-relevant information is sent in the MBS zone. 
     
     
         10 . The base station according to  claim 9 , wherein the MBS-MAP message defining a transmitting position of the message which defines DIUC-relevant information. 
     
     
         11 . The base station according to  claim 9 , wherein the message is a MBS downlink channel description (MBS-DCD) message. 
     
     
         12 . The base station according to  claim 8 , wherein the message is a downlink channel description (DCD) message. 
     
     
         13 . The base station according to  claim 11 , wherein the DIUC-relevant information comprises at least one definition and index of the downlink interval usage code (DIUC). 
     
     
         14 . The base station according to  claim 11 , wherein the DIUC-relevant information of modulation and coding mode(s) comprises a list of coding and modulation modes currently available for use in the MBS zone. 
     
     
         15 . A mobile station (MS) for receiving multicast and broadcast service (MBS) data, comprising:
 a receiver, configured to receive a message which defines DIUC-relevant information of modulation and coding mode(s) indicated by a downlink interval usage code (DIUC), and to receive a multicast and broadcast service map (MBS-MAP) message in a multicast and broadcast service (MBS) zone, the MBS-MAP message comprising an information element (IE) indicating the update of the message;   the receiver further configured to receive the MBS data according to the DIUC-relevant information of modulation and coding mode(s) contained in the message.   
     
     
         16 . The MS according to  claim 15 , wherein the message defines DIUC-relevant information is received by the receiver in the MBS zone. 
     
     
         17 . The MS according to  claim 16 , wherein the message which defines DIUC-relevant information is an MBS downlink channel description (MBS-DCD) message. 
     
     
         18 . The MS according to  claim 15 , wherein the receiver is configured to
 determine the position of a MBS-MAP message in the downlink frame; and   receive in the multicast and broadcast service zone of the downlink frame, the MBS-DCD message according to the MBS-MAP message.   
     
     
         19 . The MS according to  claim 15 , wherein the message is a downlink channel description (DCD) message. 
     
     
         20 . A mobile station according to  claim 15 , wherein the DIUC-relevant information comprises at least one definition and index of the downlink interval usage code (DIUC).