Patent ID: 7925269

Claim:
A method for channel control in a wireless video area network, comprising: scanning available channels including first scanning low-rate (LR) channels by performing energy detection for each LR channel for a time period, to determine a LR peak energy detection value for each LR channel and selectively scanning high-rate (HR) channels within which all the LR channels have LR peak energy detection values smaller than a specified LR interference threshold; selecting a channel from the available channels with minimal interference with other networks; determining if the selected channel remains available for a listening period, wherein the available channels include the HR frequency channels and the LR frequency channels, such that m HR channels in a general frequency band are defined, and n LR channels are defined in the same frequency band as the HR channels, such that within each of the HR channels, a number n of LR channels are defined; and if the selected channel remains available, then starting communication on the selected channel.