Patent ID: 9544847
Date: 2017-01-10
CPC Classifications: H04W,Y02D

Claim:
1. A method of reducing the power used by a wireless station, the method comprising: waking a first wireless station from a doze state to send a PS-Poll frame from the wireless station to an access point; in response to the PS-Poll frame being received at the access point, receiving at the first wireless station from the access point an acknowledgement frame containing a traffic buffering bit indicating that traffic for the first wireless station is buffered by the access point and that a data frame is available to transmit to the first wireless station; detecting a frame transmitted by a second wireless station that is not for the first wireless station, the second wireless station being different from the access point, after receiving at the first wireless station from the access point the acknowledgement frame indicating that the data frame is available and before receiving at the first wireless station the data frame transmitted by the access point; in response to detecting the frame transmitted by the second wireless station that is not for the first wireless station, causing the first wireless station to re-enter the doze state before receiving at the first wireless station the data frame transmitted by the access point; waking the first wireless station from the doze state a second time; and receiving at the first wireless station the data frame transmitted by the access point.