发明名称 Communication system having implemented point-to-multipoint-multicast function
摘要 The present invention refers to a communication system having a network (1) and a plurality of user terminals (2,3,4) that are coupled to the network via a communication channel using wireless radio frequency transmission and having a downlink channel for transmitting messages in the direction from the network to the user terminals wherein the downlink channel comprises a paging channel for transmission of paging messages in paging frames for initiating communication with a user terminal allocated to a paging group of a plurality of user terminals, and a paging indicator channel for transmission of a paging indicator belonging to the paging group when there is a paging message for the user terminal belonging to the paging group, wherein the user terminal processes the next paging frame transmitted on the paging channel to see whether there is a paging message intended for it when the paging indicator has been transmitted on the paging indicator channel, and wherein the paging message on the paging channel comprises a point-to-multipoint-multicast (PTM-M) group identifier to identify a PTM-M group.
申请公布号 US2002077087(A1) 申请公布日期 2002.06.20
申请号 US20010982176 申请日期 2001.10.19
申请人 LI ZHU 发明人 LI ZHU
分类号 H04L12/18;H04W4/06;H04W68/02;(IPC1-7):H04M3/42 主分类号 H04L12/18
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