Patent ID: 7869390
Filing Date: 2011-01-11
Classification: H04W,Y02D

Abstract:
1. A method of Power Save Multi-Poll (PSMP) communication in a wireless communication system including a wireless Access Point (AP) and one or more wireless Stations (STA)s, comprising: transmitting a PSMP frame from the AP to the STAs over a wireless channel, wherein the PSMP frame includes one or more STA info fields which specify schedules of periods for communication over the wireless channel in a PSMP sequence; detecting if the channel is idle for a certain duration; and if the channel is idle for said certain duration, then performing a PSMP recovery process, wherein the PSMP recovery process comprises: the AP taking control of the channel whenever the channel is idle for said certain duration in relation to a scheduled communication period specified in the PSMP frame; and