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Wireless base station neighbor discovery in a communication system, such as a system employing a short-range frequency hopping scheme

  • US 7,251,489 B2
  • Filed: 11/03/2003
  • Issued: 07/31/2007
  • Est. Priority Date: 05/02/2001
  • Status: Active Grant
First Claim
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1. A system for wirelessly exchanging communications with at least one mobile unit, the system comprising:

  • a first base station unit coupled to a network;

    a second base station unit coupled to the network, wherein the first and second base station units are configured to communicate wirelessly with the mobile unit under a Bluetooth protocol and to automatically handoff the mobile unit from the first base station unit to the second base station unit;

    wherein the first and second base station units are configured to;

    use a low power class capability to inquire whether Bluetooth compatible devices are within a near communications range;

    use a medium power class capability to inquire whether Bluetooth compatible devices are within an intermediate communications range;

    use a high power class capability to inquire whether Bluetooth compatible devices are within a far communications range;

    store at least one record that identifies any Bluetooth compatible devices are within the near, intermediate and far communications ranges;

    identify which devices are base station units capable of accepting the mobile unit during a handoff, wherein identification of base station units results from a wireless inquiry signal from the identifying base station and a wireless response signal back from the identified base stations; and

    update the at least one record to reflect changes in base station units capable of accepting the mobile unit during a handoff.

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