Abstract: A wireless network communication system and its communication method of the present invention is mainly initiated from an interconnected state between a master controller, at least one slave controller and at least one working station (STA). The at least one slave controller is capable of transmitting an uplink signal strength (rssiVal) with the at least one working station (STA) to the master controller so that the master controller can instruct commands of disconnection or connection to the at least one slave controller according to the uplink signal strength (rssiVal) with the at least one working station (STA) transmitted from the at least one slave controller, and the at least one slave controller can automatically disconnecting from or connecting with the at least one working station (STA) so as to achieve automatic switch between base stations (wireless Internet devices) and obtain the best and most stable connection quality.

Abstract: Disclosed herein are methods and systems for adjusting the maximum number of downlink retransmissions that are permissible for a user entity, according to whether or not coordinated multipoint service is being provided for the user entity.