Patent ID: RE43296

Claim:
A diversity handover control method in a mobile communication system that includes a mobile station, a plurality of base stations capable of communicating with said mobile station each via a corresponding radio branch, and a center communicating with each of said base stations via a corresponding cable second branch, the second branch being one of a cable branch or a fixed radio channel, the center controlling diversity handover, said diversity handover control method comprising the steps of: notifying, from said mobile station to said center, information on one or more addition branch candidates; and carrying out, at said center, the diversity handover based on said notified information on one or more addition branch candidates by establishing, between said center and said mobile station, a plurality of communicating branches each via a different base station, wherein the communicating branch for any given one of the plurality of base stations is composed of a radio branch communicating between the mobile station and the given base station, and a cable second branch communicating between the given base station and the center, the second branch being one of a cable branch or a fixed radio channel, wherein when said center establishes a communicating branch of the plurality of communicating branches between said center and said mobile station for the diversity handover, said center establishes a cable second branch of the communicating branch before establishing a radio branch of the communicating branch.