Patent ID: 9603152
Date: 2017-03-21
CPC Classifications: H04W

Claim:
1. A wireless network channel allocation method for interference avoidance in a wireless network which performs communication between devices in a predetermined frequency band including one or more channels, the method comprising: initially determining, by at least one of the devices, whether some or all of the one or more channels is used by other sources including sources external to the wireless network; if some or all of the one or more channels is used by other sources, determining whether one of the one or more channels used by other sources is currently used by the wireless network; if one of the one or more channels used by other sources is currently used by the wireless network, selecting any one of the one or more channels except for the channel which is currently used by the wireless network and switching the channel which is currently used by the wireless network to the selected channel; and if one of the one or more channels used by other sources is not currently used by the wireless network, storing information about the channels used by the other sources, wherein the selected channel is a channel which is not most recently used by other sources according to the stored information, and wherein the determining of whether some or all of the one or more channels are used by other sources includes