Communication System, Wireless Lan Base Station Controller, and Wireless Lan Base Station Device

摘要

A communication system, wireless LAN base station controller, and a wireless LAN base station device for efficiently communicating a broadcast frame or multicast frame through a downstream channel. The communication system ( 10 ) comprises an AP controller ( 100 ) and a wireless LAN base station device ( 200 ). A frame converting section ( 102 ) of the AP controller ( 100 ) performs conversion into a 802.11 frame according to the network-side tunnel header of the downstream broadcast or multicast frame, and a tunnel creating/managing section ( 103 ) creates a tunnel header having a destination MAC address which is a broadcast or multicast address, and encapsulates the 802.11 frame by the tunnel header. A tunnel creating/managing section ( 202 ) of the wireless LAN base station device ( 200 ) adds the BSSID of the wireless LAN base station device ( 200 ) to the header of the 802.11 frame from which the tunnel header is removed, and terminal-side input/output section ( 204 ) sends the 802.11 frame with the BSSID.