Patent ID: 8102786

Claim:
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 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; a mobile station (MS) receiving the message, analyzing other messages in the multicast and broadcast service (MBS) zone according to the DIUC-relevant information contained in the message, and receiving multicast and broadcast service (MBS) service data according to the analyzing result of the other messages in the multicast and broadcast service zone; and wherein said message is contained in the multicast and broadcast service (MBS) zone of a downlink frame; wherein the message is a multicast and broadcast service downlink channel description (MBS-DCD) message, the method further comprising: adding, by a MBS server, an information element (IE) providing an indication of an update of the MBS-DCD message in a MBS-MAP message and, the mobile station (MS) judging whether an updated IE of the MBS-DCD message carried in a received MBS-MAP message is identical to an update information reserved in the MBS-DCD message of this mobile station (MS), if yes, the mobile station (MS) directly receiving other messages of the multicast and broadcast service (MBS) zone according to a DIUC-relevant information carried in a MBS-MAP message reserved by the mobile station (MS), otherwise, the mobile station (MS) receiving a new MBS-DCD message which is related to the message update information carried by the MBS-MAP message.