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Network autonomous wireless location system

  • US 8,213,957 B2
  • Filed: 04/22/2009
  • Issued: 07/03/2012
  • Est. Priority Date: 04/22/2009
  • Status: Expired due to Fees
First Claim
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1. A network autonomous wireless location system (NAWLS) configured to locate a mobile device having a wireless communications transceiver for communicating with a wireless communications network (WCN), comprising:

  • a) a radio network monitor (RNM) configured to passively monitor two or more radio air interfaces;

    b) a network emulator (NE) configured to emulate one or more WCN, said one or more WCN possessing one or more radio air interfaces; and

    c) an untethered wireless location system (U-WLS), said U-WLS comprising a plurality of mobile receiver sites, wherein each of said mobile receiver sites includes a receiver configured to receive uplink radio signals from said mobile device, and means for determining a precise location and velocity for the mobile receiver site, said U-WLS configured to determine a precise location and velocity of the mobile device from radio signal information received by said plurality of mobile receiver sites;

    wherein said U-WLS is connected to the NE via a digital data link, and wherein said U-WLS is configured to use said digital data link to inform the NE that a location has been completed, that additional power is needed to locate the mobile device, that an inter-RAT (radio access technology) handoff is needed, and/or that allocation to a traffic channel is needed.

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