Patent ID: 8824435
Filing Date: 2014-09-02
Classification: H04L,H04W

Abstract:
1. A method of scanning channels for a whitespace zone in a wireless local area network, the method comprising: transmitting a request frame from a scanning station to a response station on an available channel identified in a first white space map (WSM) including a list of available channels; receiving a response frame as a response of the request frame from the response station, the response frame including a second WSM including an updated list of available channels; moving to a channel based on the second WSM; and scanning, by the scanning station, channels of the whitespace zone based on the second WSM, wherein the scanning includes transmitting another request frame from the scanning station on an available channel identified in the second WSM, wherein the response station acquires available channel information of the whitespace zone from an entity having the available channel information, wherein the response station generates at least one of the first WSM or the second WSM based on the acquired available channel information, wherein the request frame is a probe request frame, wherein the response frame is a probe response frame, and wherein the probe request frame and the probe response frame are used by the scanning station for scanning for Basic Service Sets (BSSs) operating on a channel on which the probe request frame is transmitted.