Patent ID: 8351353

Claim:
A method for realizing forward channel sharing in trunked communication in a time division communication system, wherein said time division communication system comprises cluster users for trunked communication, an access network and a cluster control center server, a group configuration for the cluster users is completed at said cluster control center server, and attributes of all the users in the group are modified to enable the users to support multi-user packet (MUP) service, comprising following steps of: (a) a cluster user initiates a group call for trunked communication with multiple users, said access network allocates a unique group identifier MACIndex for this group call after receiving a call request from the cluster user, and informs all the users in the group about the MACIndex; (b) the communication between cluster users starts after the group call has been set up, the access network packets user data of one or more groups with MUP after the trunked communication starts, packets the user data of each group into one sub-packet of a MUP packet and performs scheduling, then transmits MUP packets through a forward channel; and (c) the cluster user looks into the MUP packets for the sub-packet that matches the MACIndex of its group after receiving the MUP packets from the forward channel, thereby realizing the group call in trunked communication.