METHOD OF HOLDING OFF FLOOR GRANT REQUESTS IN PUSH TO TALK CLIENTS

摘要

A method for controlling a communication floor between a group of clients of a Push to Talk over Cellular, referred to as PoC, communication system in a manner that only one PoC client is allowed to transmit data bursts at a time, comprising the step of requesting by one PoC client permission to transmit data packets using a Talk Burst Request message, the step of sending by the PoC server a Talk Burst Granted message to the requesting PoC client indicating a temporary exclusive right to transmit data bursts. The Talk Burst Granted message includes a holdoff indicator field indicating a holdoff time, which inhibits the requesting PoC client from sending another Talk Burst Request message to the PoC server until expiry of the holdoff time.