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Mobile communication system capable of performing soft-handover between base station controllers connected to different mobile communication exchanges

  • US 6,574,475 B1
  • Filed: 08/26/1999
  • Issued: 06/03/2003
  • Est. Priority Date: 08/26/1998
  • Status: Expired due to Fees
First Claim
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1. A mobile communication system including a plurality of base stations including cells for being connected to through which a mobile terminal may be connected by radio, and a plurality of base station controllers connected between said base stations and a mobile exchange, said mobile communication system comprising:

  • control signal lines connected among said base station controllers operable to transmit control signals to perform soft-handover and to put corresponding base station controllers into a soft-handover state independent of said mobile exchange when said mobile terminal moves between cells; and

    connection lines connected among said base station controllers operable to maintain communication between said mobile terminal and another terminal in the soft-handover state;

    each of said base station controllers operable to maintain transmitting/receiving communication signals to/from said mobile exchange during the soft-handover state regardless of the location of said mobile terminal, when the communication starts through said mobile exchange.

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