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Wireless communications network

  • US 20040147267A1
  • Filed: 03/25/2004
  • Published: 07/29/2004
  • Est. Priority Date: 03/28/2001
  • Status: Abandoned Application
First Claim
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1. A method for determining information regarding a mobile terminal'"'"'s movement within a wireless network including a plurality of fixed and mobile terminals, the method comprising the steps of:

  • measuring synchronised Received Signal Strength Information (RSSI) measurements at, at least, two different points in time from at least three fixed terminals for a mobile terminal moving within the network;

    interpolating the synchronised measurements to provide an estimate of the distance of the mobile terminal, from each of the at least three fixed terminals, at each different point in time;

    determining an estimated position of the mobile terminal, at each different point in time, from the estimated distances of the mobile terminal from each of the fixed terminals; and

    determining the mobile terminal velocity by dividing the distance between the positions of the mobile terminal at the two different points in time by the time interval between the two different points in time.

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