Patent ID: 6501952
Filing Date: 2002-12-31
Classification: H04W

Abstract:
A method for hand-off of a communication session in a mobile wireless communication system, utilizing directed call pick up with barge-in, in which the communication session of a mobile unit is transferred from a serving base station to a target base station, the method comprising:(a) establishing a barge-in call path from the target base station to a switch by transmitting a call set up message to the switch and further transmitting a sequence of information messages to the switch, the call set up message and the sequence of information messages requesting directed call pick up with barge-in and specifying a first predesignated directory number associated with the communication session at the serving base station; (b) connecting the barge-in call path to the communication session to form a reverse three-way communication session; (c) providing for the mobile unit to communicate with the target base station for continuation of the communication session through the barge-in call path; and (d) releasing the serving base station from the communication session.