Patent ID: 7406296

Claim:
A method of operating a first radio transceiver in close proximity to a second radio transceiver, the method comprising: receiving a first signal that indicates whether the second radio transceiver is idle or busy; receiving a second signal that, when the second radio transceiver is idle, indicates when the second radio transceiver must have access to a second channel; and determining whether to enable the first radio transceiver to use a first channel based on at least the first signal, wherein determining whether to enable the first radio transceiver to use the first channel based on at least the first signal comprises determining whether to enable the first radio transceiver to use the first channel based on at least the first and second signals, and wherein determining whether to enable the first radio transceiver to use the first channel based on at least the first signal comprises: enabling the first radio transceiver to use the first channel only when the first signal indicates that the second radio transceiver is idle and use of the first channel by the first radio transceiver will at no point be concurrent with a moment in time indicated by the second signal as being when the second radio transceiver must have access to the second channel.