Patent ID: 8305948

Claim:
A method for coordinating and conducting transmissions to a plurality of users during a transmission opportunity, comprising: transmitting, to a first user aid to a second user, a clear-to-send-to-self frame, wherein the clear-to-send-to-self frame establishes a transmitter as a holder of a transmission opportunity and comprises an address of the transmitter and a transmission interval, wherein the clear-to-send-to-self frame includes the address of the transmitter in a transmitter address field of the clear-to-send-to-self frame and in a recipient address field of the clear-to-send-to-self frame; transmitting a first request-to-send frame to the first user during the transmission interval, wherein the first request-to-send frame indicates the address of the transmitter and an address of the first user, wherein the first request-to-send frame comprises a request for channel information feedback from the first user; receiving a clear-to-send frame from the first user responsive to the first request-to-send frame; transmitting data to the first user; transmitting a second request-to-send frame to the second user during the transmission interval, wherein the second request-to-send frame indicates the address of the transmitter and an address of the second user, wherein the second request-to-send frame comprises a request for channel information feedback from the second user; receiving a clear-to-send frame from the second user responsive to the second request-to-send frame; and transmitting data to the second user.