Method and apparatus for increasing success rate of push-to-talk access in a mobile communications network

摘要

A method and computer program for initiating a message to a radio access network include steps of: ( 404 ) detecting a request to transmit a probe message from a transmitter over an access channel to a radio access network; ( 406 ) calculating a transmit power for the probe message; ( 408 ) checking a condition that may result in failure to receive the probe message over the access channel by the radio access network; and ( 410 ) when the condition is determined to be true, then ( 412 ) reducing a message length of the probe message to generate a shorter probe message; ( 414 ) recalculating the transmit power to send the shorter probe message; and ( 416 ) transmitting the shorter probe message over the access channel at the recalculated transmit power.