Abstract: A wireless communication system and methods for automatically switching device identifications are disclosed, where the device identifications are automatically determined by a plurality of work devices connected to a cable network after a connection time, respectively, and the one among the plurality of work devices becomes a main device may transmit a survive message to the work devices becoming a backup device, and the main device is determined as failing to work normally and a new main device is automatically determined again when the backup device fails to receive the survive message transmitted by the main device or a switch notification transmitted by the main device, so that the wireless communication on a carrier may have an improved stability and the technical efficacy may be achieved that the work device may automatically and rapidly determine the main device when no main device existing in the wireless network environment.

Abstract: A wireless communication system and methods for automatically switching device identifications are disclosed, where the device identifications are automatically determined by a plurality of work devices connected to a cable network after a connection time, respectively, and the one among the plurality of work devices becomes a main device may transmit a survive message to the work devices becoming a backup device, and the main device is determined as failing to work normally and a new main device is automatically determined again when the backup device fails to receive the survive message transmitted by the main device or a switch notification transmitted by the main device, so that the wireless communication on a carrier may have an improved stability and the technical efficacy may be achieved that the work device may automatically and rapidly determine the main device when no main device existing in the wireless network environment.

Abstract: A roaming system using a wireless access controller to select an access point and the method thereof are provided. By sending a signal strength between a station and access points (AP's) detecting the station from each AP to a wireless access controller (WAC), and notifying the station to select one of the APs to connect according to the signal strength between the station and each AP by the WAC, the system and the method can keep connection quality and transmission efficiency of a station, and achieve the effect of fast roaming.

Abstract: A roaming system using a wireless access controller to select an access point and the method thereof are provided. By sending a signal strength between a station and access points (AP's) detecting the station from each AP to a wireless access controller (WAC), and notifying the station to select one of the APs to connect according to the signal strength between the station and each AP by the WAC, the system and the method can keep connection quality and transmission efficiency of a station, and achieve the effect of fast roaming.