Patent ID: 7003302

Claim:
A packet transfer apparatus connected between a communication network and a plurality of base stations each of which conducts communications with a plurality of mobile stations via radio channels, for transferring packets received from said communication network to one of said base stations accommodating a plurality of destination mobile stations of the received packets, comprising: storing means for storing packets received from said communication network correlating the packets with each of the destination mobile stations; receiving means for receiving a control message from each of said base stations periodically, the control message including transfer rate information of packet transmission between the base station and each of mobile stations under control of the base station; and control means for reading out packets destined for specific mobile stations from said storing means in accordance with the contents of the control message received by said receiving means and transmitting the packets to the base station to which the specific mobile stations are connected; a transmission and reception control unit connected to said base station; and a base station session management unit for extracting said transfer rate information of each mobile station from said control message received by said receiving means.