Patent ID: 8179805
Filing Date: 2012-05-15
Classification: H04W

Abstract:
1. A method of establishing wireless communication between a first transmitter and a first receiver on the same wireless data channel used for ongoing transmission between a second transmitter and a second receiver, comprising: performing interference detection including: determining if the second receiver can receive signals from the first transmitter, determining if the first receiver can receive signals from the second transmitter, and transmitting a control message on a control channel to signal other stations in range that the data channel is in use by the second transmitter and the second receiver; upon the first transmitter and second transmitter being beamformed towards each other on the data channel, during a first testing period if the first receiver cannot receive data transmissions from the second transmitter, then signaling the second transmitter and the second receiver to also perform interference detection during a second testing period if the second receiver cannot receive signals from the first transmitter, and the first receiver cannot receive signals from the second transmitter, indicating no interference, then establishing a new transmission from the first transmitter to the first receiver by spatial reuse of the wireless data channel; and upon receiving the control message, the first transmitter and the first receiver exchanging beamtracking data on the control channel which does not interfere with the control channel being currently occupied by the second transmitter and the second receiver, for beamforming on said data channel, wherein the new transmission on said data channel is at least partially concurrent with said ongoing transmission on said data channel.