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1. (WO2009121260) RELIABLE MULTICAST REALIZING METHOD, SYSTEM, TERMINAL AND BASE STATION

Pub. No.:    WO/2009/121260    International Application No.:    PCT/CN2009/070740
Publication Date: Oct 8, 2009 International Filing Date: Mar 11, 2009
IPC: H04W 4/06
Applicants: HUAWEI TECHNOLOGIES CO., LTD.
华为技术有限公司
ZHENG, Ruobin
郑若滨
WANG, Xi
王曦
ZHANG, Min
张民
CHEN, Xue
陈雪
Inventors: ZHENG, Ruobin
郑若滨
WANG, Xi
王曦
ZHANG, Min
张民
CHEN, Xue
陈雪
Title: RELIABLE MULTICAST REALIZING METHOD, SYSTEM, TERMINAL AND BASE STATION
Abstract:
A reliable multicast realizing method, system, terminal and base station are disclosed in the embodiments of the present invention, the method includes: transmitting a code division multiple access (CDMA) code word used by an uplink range channel to the base station as a feedback signal which indicates that a multicast frame does not be received correctly, if the multicast frame is not received from the base station; sending automatic repeat request to the base station for requesting the base station to retransmit the multicast frame that is incapable of being correctly received, after receiving a broadcast message from the base station, in which the broadcast message is sent after receiving the feedback signal is received by the base station; receiving the multicast frame retransmitted by the base station. The advantage of using the present invention is that increasing the quantity of receiving multicast frame correctly and reducing the bandwidth occupied by uplink resource.