Method for scanning wireless channels, apparatus and system for using the same

摘要

In order to obtain information related to operating channels of access points, the method receives lightweight beacons on a common channel. The method generates a channel scanning list in accordance with the content of the lightweight beacons and sequentially scans all the channels on the list. The method is capable of reducing the scanning time and the data loss rate during the scanning operation.

主权项

1. A method for scanning wireless channels, comprising the steps of:
recording a current operating channel and receiving at least one standard beacon on the current operating channel, wherein the at least one standard beacon includes channel information of a common channel of at least two access points; switching to the common channel in accordance with the standard beacon and receiving at least two lightweight beacons broadcasted by the at least two access points on the common channel, wherein the at least two lightweight beacons comprise channel information of at least two operating channels of the at least two access points; generating one channel scanning list including the at least two operating channels in accordance with the at least two lightweight beacons; initializing scanning parameters, wherein the scanning parameters comprise the number of channels to be scanned on the channel scanning list, a start-up scanning channel, a last channel to be scanned and the current operating channel; setting one of the channels to be scanned in accordance with the scanning parameters; switching from the common channel to the one of the channels to be scanned in accordance with the scanning parameters; and scanning the one of the channels to be scanned in accordance with the scanning parameters.