Patent ID: 8131291
Filing Date: 2012-03-06
Classification: H04B,H04W

Abstract:
1. A method of enabling active channel scanning in a wireless network, said method comprising: collecting candidate access point information that differentiates between candidate access points that are available for association; selecting a candidate access point from said candidate access points based on said candidate access point information; and transmitting a probe request, said probe request including an address of said selected access point that is specified in a basic service set identification field, wherein, if said selected candidate access point does not respond to said probe request within an interframe space period that immediately follows said probe request and that interframe space period is shorter than a distributed interframe space period, said wireless station resends said probe request in the time period after said interframe space period that immediately follows said probe request has ended but prior to the time period that a distributed interframe space period would have ended if said distributed interframe space period had begun at the same time as said interframe space period that immediately follows said probe request.