Patent ID: 8576762
Filing Date: 2013-11-05
Classification: H04W,Y02D

Abstract:
1. A method for operating a wireless mobile station which is configured to communicate with a wireless access point, the method comprising: determining, at the wireless mobile station, an interval of the time between successive target beacon transmission times (TBTT); determining, at the wireless mobile station, a setting representing an interval of time between successive Delivery Traffic Indication Messages (DTIM); adjusting a first period of a first sleep timer in response to determining the interval of time between successive TBTTs and in response to determining the interval of time between successive DTIMs; determining a number of times the first sleep timer with the first period has expired; and adjusting a second period of a second sleep timer in response to determining the number of times the first sleep timer has expired, wherein the second sleep timer with the second period is started without restarting the first sleep timer with the first period if the number of times indicates the first sleep timer has been counting for more than a certain period of time, and wherein the second period of the second timer is longer than the first period of the first timer.