1213939-A1 is referenced by 38 patents and cites 5 patents.

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-multipointmulticast (PTM-M) group identifier to identify a PTM-M group.

Title
Communication system having implemented point-to-multipoint-multicast function
Application Number
EP20000126969 20001208
Publication Number
1213939 (A1)
Application Date
December 8, 2000
Publication Date
June 12, 2002
Inventor
Li Zhu
CN
Assignee
Nokia
FI
IPC
H04Q 07/38
H04W 68/00
H04W 04/06
H04L 12/18
H04W 68/02
H04W 04/06
H04L 12/18
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