Patent ID: 8780819

Claim:
A method for controlling wireless communication channels, the method comprising: establishing a wireless communication channel via a particular channel to an access point (AP), wherein the particular channel is one of a plurality of channels that is capable of being established between a portable terminal and the AP; determining whether the particular channel is congested; identifying, when the particular channel is congested, information regarding channels used by a plurality of APs located in a range of communication of the portable terminal; identifying, for each channel in the plurality of channels, a number of APs using the each channel; selecting one or more channels in the plurality of channels based on the number of APs identified using the each channel, wherein a number of APs using the one or more channels is less than a number of APs using the particular channel; and when multiple channels are used by a least number of APs, switching the wireless communication channel to a channel in the selected one or more channels that is spaced apart from the particular channel with a largest frequency difference.