Access point and method for communicating with stations in accordance with a multiple-access technique

摘要

According to various embodiments, a computer-implemented method is disclosed that allows an AP to efficiently poll various information from STAs belonging to a SDMA group. Each STA may transmit uplink frames using uplink SDMA mechanism.

主权项

1. An apparatus of an access point comprising: memory; and physical layer (PHY), and medium-access control (MAC) layer circuitry coupled to the memory, the PHY and MAC layer circuitry configured to:
contend for a wireless medium to receive exclusive control of the medium for a control period; transmit a polling frame; receive responses from at least two stations to the polling frame, wherein the responses each comprise an indication of a size of buffered data at the corresponding station of the at least two stations; transmit a control transmission at the beginning of the control period, the control transmission to identify the at least two stations and a duration of the control transmission, wherein the duration is determined at least partially by the indication of the size of buffered data; and receive simultaneously aggregate media access control protocol data units (A-MPDUs) that include data from the identified stations in accordance with a non-contention based multiple-access technique during the control period, wherein the A-MPDUs indicate an acknowledgement of the control transmission, and wherein the A-MPDUs are to be transmitted by the identified stations a short interframe space (SIFS) after the identified stations receive the control transmission.