Patent ID: 9635614
Date: 2017-04-25
CPC Classifications: H04W,Y02D

Claim:
1. A method in a wireless local area network, the method performed by an access point (AP) that functions as a personal basic service set control point (PCP) and comprising: receiving, by the AP from a second station, an information request frame for requesting whether or not a wakeup schedule is established between the AP and a first station, the information request frame including a target address indicating an address of the first station; transmitting, by the AP to the second station, an information response frame including a first wakeup schedule element in response to the information request frame, wherein, if the AP has an established wakeup schedule with the first station, the first wakeup schedule element includes information about the establish wakeup schedule, and wherein, if the AP has no established wakeup schedule with the first station, a length of the first wakeup schedule element is set to zero by the AP; and transmitting, by the AP to the second station, an unsolicited information response frame when the AP updates the first station's wakeup schedule with an updated schedule for the first station, the unsolicited information response frame including a second wakeup schedule element including information about the updated wakeup schedule of the first station.