Patent ID: 7450975
Filing Date: 2008-11-11
Classification: H04W,Y02D

Abstract:
1. A method of lengthening the battery life of a mobile station comprising the steps of: obtaining a sector capacity in which the mobile station is operating; initiating a Push-To-Talk (PTT) call message at the mobile station operating in a first Radio Access Network (RAN); receiving the PTT call message at the first RAN; increasing a length between paging cycles when the sector capacity is less than a threshold by resting for a waiting period between wake up intervals before a second mobile station in a second RAN powers up to receive communications in order to conserve power in a battery associated with the mobile station; sending a message from the first RAN to the second RAN; exchanging a message between the second RAN and the second mobile station; establishing a channel between the first and second mobile stations; sending a Talk Permit Tone (TPT) across the first and second RAN to the first mobile station; and playing out audio at the second mobile station.