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Hand-off between ultra-wideband cell sites

  • US 6,907,244 B2
  • Filed: 03/12/2001
  • Issued: 06/14/2005
  • Est. Priority Date: 12/14/2000
  • Status: Expired due to Term
First Claim
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1. A method for performing a soft hand-off in an ultra-wideband cellular communication system, comprising the steps of:

  • monitoring a signal strength and a bit error rate from a first base station;

    monitoring the signal strength and the bit error rate from a second base station;

    comparing the signal strength and the bit error rate from the first base station to the signal strength and the bit error rate from the second base station or to predetermined levels;

    transferring data reception and transmission from the first base station to the second base station when the signal strength from the second base station is greater than the signal strength of the first base station or when the bit error rate of the second base station is less than the bit error rate of the first base station or when either signal strength or bit error rate is below a pre-determined level;

    wherein a mobile device is linked to the first base station and requests the position of a plurality of base stations;

    the plurality of base stations reply;

    the mobile unit determines and stores the location of each of the base stations;

    each of the base stations transmits an associated rating to the mobile device;

    the mobile device calculates the data integrity of each base station and establishes a link with a base station having the highest data integrity; and

    the mobile device transmits a link curtailment to the first base station.

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