Patent ID: 7164889

Claim:
A mobile communication system for exploiting site diversity, said system comprising: a plurality of base stations, each one of said plurality of base stations being operable to asynchronously transmit signals and to transmit, slot by slot, information data and a pilot signal time-multiplexed with respect to the information data; a control station operable to control said plurality of base stations; and a mobile terminal operable to concurrently receive the transmitted signals from said plurality of base stations said mobile terminal including: unusual timing information transmission means for measuring a time difference between a transmission timing associated with a given one of said plurality of base stations and a specific incoming signal received associated with that base station, said measuring being carried out for each one of said plurality of base stations from which said mobile terminal receives the associated incoming signal, and when the time difference of a particular one of said plurality of base stations has exceeded an allowable range, for sending unusual timing information to said particular one of said plurality of base stations and to said control station, the unusual timing information including information specifying the particular one of said plurality of base stations and the time difference for that base station; said control station including: controlling means for transiently halting the site diversity between the mobile terminal and said particular one of said plurality of base stations based on the received unusual timing information, and for transmitting setting information, which excludes information concerning said particular one of said plurality of base stations, to said mobile terminal through at least another one of said plurality of base stations; said mobile terminal terminating reception from said particular one of said plurality of base stations in response to receiving the setting information and then transmitting an acknowledgement message to said particular one of said plurality of base stations; and said particular one of said plurality of base stations terminating transmission to said mobile terminal in response to receiving the acknowledgement message.