Patent ID: 8249090

Claim:
A wireless base station which makes wireless communication with a mobile wireless communication device, comprising: (a) an interface through which said wireless base station makes wireless communication with said mobile wireless communication device; (b) a message transceiver which transmits messages to and receives messages from a router, and transmits messages using a broadcast destination address to and receives messages from a plurality of base stations making communication with said router, the router and the plurality of base stations being provided on a same broadcast link as the wireless base station, each of said plurality of base stations is a physically separate device from and remotely wired to said router; and (c) a memory which stores an address of said router, an address of a terminal device of a plurality of terminal devices making communication with said mobile wireless communication device, and a message indicating that said terminal device has moved away, wherein each of said plurality of terminal devices is a physically separate device from and remotely wired to said mobile wireless communication device, and wherein said message transceiver, on receipt of a broadcast packet, judges whether a source address of said broadcast packet is the address of said router stored in said memory, and transmits said broadcast packet to said mobile wireless communication device with which said wireless base station has made link, upon said source address of said broadcast packet being the address of said router stored in said memory.