| 摘要 |
A group call is conducted in a wireless communications system including a plurality of distributed transceiver units, e.g., radio heads of a private wireless system, each of which are operative to communicate with terminals over a plurality of communications channels. A group call origination message is transmitted from an originating terminal, preferably in response to a user input at the originating terminal, more preferably in response to actuation of a push-to-talk (PTT) device at the originating terminal. The transmitted group call origination message is received at a transceiver unit and, in response, a group call traffic channel designation messages addressed to a group of terminals is transmitted from the transceiver units, the transmitted group call traffic channel designation message designating a common traffic channel. Communications then occur among terminals of the group of terminals, preferably in half-duplex mode, over the designated common traffic channel. |
