Patent ID: 7079507

Claim:
A method for a mobile terminal to initiate communication with a base station by making an access attempt, this access attempt being made in the context of a wireless telecommunications network, and the method comprising the steps of: finding ( 200 ) at least one available uplink channel by monitoring a channel status message that is broadcast by the base station over a status indication channel (CSICH), sending ( 202 ) at least one identification signal to the base station, including collision detection information so that the base station will not confuse the mobile terminal with other mobile terminals, receiving ( 204 ) a channel allocation and a collision response signal from the base station; proceeding ( 212 ) to transmit communication data to the base station on an allocated common packet channel, if the allocated common packet channel was indicated as available by the channel status message broadcast over the status indication channel (CSICH), and also provided that the collision response signal and the collision detection information are indicative of matching signatures, aborting ( 210 ) the access attempt if the channel allocation received ( 204 ) from the base station did not allocate a channel which had previously been indicated as available by the channel status message broadcast over the status indication channel (CSICH).