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Wireless private branch exchange (WPBX) and communicating between mobile units and base stations

  • US 7,107,057 B2
  • Filed: 02/20/2002
  • Issued: 09/12/2006
  • Est. Priority Date: 04/07/2000
  • Status: Expired due to Term
First Claim
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1. In a wireless communication system comprising a Base Station connected with at least one mobile unit, a method of detecting the presence of a specific mobile unit in a coverage area of at least one neighboring Base Station, comprising:

  • the Base Station connected with the specific mobile unit provides, independently of the specific mobile unit, and independently of a strength of a signal received from the specific mobile unit by the Base Station connected with the specific mobile unit, to the at least one neighboring Base Station, information about the connection with the specific mobile unit, including rough TOD and a device address for the specific mobile unit;

    at the at least one neighboring Base Station, receiving information and generating a list of frequencies in which the specific mobile unit is likely to transmit;

    and at the at least one neighboring Base Station, checking for a signal transmitted by the specific mobile unit.

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