Patent ID: 9544839
Date: 2017-01-10
CPC Classifications: H04W

Claim:
1. A method of scanning existing networks at a first station in a communication system, the method comprising: receiving, by a first station, a white space map (WSM) comprising information for available channels from a second station; and scanning, by the first station, the existing networks on the available channels identified within the received WSM, wherein scanning the existing networks is performed by one or more of a first scheme or a second scheme, the first scheme comprising listening to a beacon frame from an AP station of a basic service set (BSS) on a specific channel among the available channels identified by the received WSM, the second scheme comprising transmitting a probe request frame to an AP station of the BSS on any channel among the available channels identified by the received WSM; and receiving a probe response frame in response to the probe request frame.