ACCESS POINT RESPONSE TO PS-POLL

摘要

Methods, systems, and devices are described for power conservation in a wireless communications system through efficient transmissions and acknowledgements of information between an AP and a station. The time between a determination by a station to enter a power saving mode and entering network sleep mode by the station may be reduced through a transmission, by an AP, of an MPDU to the station successive to an SIFS after transmission of an acknowledgement to the station of a PS-Poll frame from the station. The time to enter a power saving mode by a station may also be reduced through transmission of A-MPDUs in which a last MPDU of the A-MPDU has an indicator bit cleared to indicate no additional data is to be transmitted. An AP may prevent a retransmission of an MPDU to the station in the absence of an acknowledgement from the station, to further enhance efficiency.

主权项

1. A method for wireless communications, comprising:
receiving a power save poll (PS-Poll) frame from a station; transmitting an acknowledgement to the station that the PS-Poll frame is received following a short interframe space (SIFS); and transmitting a media access control (MAC) protocol data unit (MPDU) to the station responsive to the PS-Poll frame successive to an SIFS after transmission of the acknowledgement to the station.