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Methods for employing location information associated with emergency 911 wireless transmissions for supplementary and complementary purposes

  • US 20020196161A1
  • Filed: 08/10/2001
  • Published: 12/26/2002
  • Est. Priority Date: 03/16/2001
  • Status: Active Grant
First Claim
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1. A system for determining the location of an object equipped with a device, which is capable of placing a wireless telephone call, the system comprising:

  • a mobile switching center connected to a telephone network;

    at least one base station, wherein the at least one base station is in communication with the mobile switching center;

    a plurality of wireless transmission antennas, wherein each wireless transmission antenna is in communication with one base station;

    a location processor, the location processor being in communication with the mobile switching center, wherein the location processor is capable of determining the location of the radiotelephone through triangulation calculation;

    a plurality of radio direction finding devices, one radio direction finding device being installed adjacent a wireless transmission antenna;

    a monitoring center in connection to the telephone network; and

    a device installed on an object, wherein the device is capable of initiating and receiving wireless telephone calls to and from the monitoring center.

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