Patent ID: 6917598

Claim:
A method of performing power save operation in a wireless local area network (WLAN) by a mobile station while performing voice communications, comprising: admitting a reserved traffic stream at an access point, including establishing a reserved buffer at the access point for buffering data corresponding to the reserved traffic stream to be transmitted to the mobile station; placing a WLAN subsystem of the mobile station in a low power state; waking up the WLAN subsystem of the mobile station from the low power state in response to the occurrence of a service interval timer event, the service interval timer for timing a service interval, the service interval defining a real time duration of a voice frame; transmitting a polling frame to the access point over a WLAN channel, the polling frame identifying the reserved traffic stream and including an aggregation indicator; in response to transmitting the polling frame, receiving an aggregate response at the mobile station over the WLAN channel, wherein the aggregate response includes at least one frame of data from an aggregate buffer of the access point, the aggregate buffer for buffering both unreserved and reserved data for the mobile station, and wherein receiving the aggregate response continues until the aggregate buffer is empty or a service time period expires; and upon receiving the aggregate response, setting the WLAN subsystem into the low power state.