Patent ID: 6178165
Filing Date: 2001-01-23
Classification: H04B,H04W

Abstract:
A communication system for carrying out hand-over from a radio base station to another radio base station in accordance with a request of hand-over outputted from the radio base station due to movement of a mobile station, said communication system comprising:a plurality of interface circuits through which communication signals are transmitted between a mobile station and a plurality of radio base stations via transmission paths;a switch for assigning the communication signals to said interface circuits such that the communication signals from said interface circuits are distributed in accordance with header information which the respective communication signals are transmitted from the radio base stations to the mobile station via the transmission paths;a control unit connected to both said interface circuits and said switch for receiving a hand-over instruction outputted from the radio base station in accordance with the movement of the mobile station, from the associated interface circuit; anda diversity hand-over processing unit connected to both said control unit and said switch, for receiving both a first communication signal received from the radio base station as a source of hand-over outputting a hand-over instruction and a second communication signal received from the radio base station as a destination of hand-over, in accordance with the hand-over instruction to output one of the first and second communication signals to the associated interface circuit and for transmitting the communication signal received from the mobile station on the reception side for communication via the radio base station to both the interface circuit associated with the radio base station as the source of hand-over and the interface circuit associated with the radio base station as the destination of hand-over.