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Method and apparatus for determining if a mobile station is present in an area

  • US 6,381,457 B1
  • Filed: 04/07/1999
  • Issued: 04/30/2002
  • Est. Priority Date: 04/09/1998
  • Status: Expired due to Fees
First Claim
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1. A mobile station presence detection method in a radio communication system, comprising a first base station and a mobile station, the method comprising the steps of:

  • allocating a first radio channel for communication of control information and user data information between the mobile station and the first base station;

    transmitting information identifying the mobile station repeatedly in a portion of the first radio channel used for transmission of the control information;

    providing information defining the allocated first channel; and

    receiving at least one occurrence of the transmitted identity information at a second base station; and

    registering the mobile station as present in a determined area upon receipt of said at least one occurrence of the transmitted identity information at the second base station.

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