Method and apparatus for transmitting subject status information over a wireless communications network

  • US 5,889,474 A
  • Filed: 10/17/1995
  • Issued: 03/30/1999
  • Est. Priority Date: 05/18/1992
  • Status: Expired due to Fees
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First Claim
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1. A method for communicating subject status information between a subject and a central monitoring station utilizing a wireless communications network that includes a voice channel and a control channel wherein the voice channel conveys data signals and the control channel conveys control signals that manage access to and use of the voice channel, the method comprising the steps of:

  • a) transmitting a subject status data message from a radio collar coupled to the subject to a communicator;

    b) encoding the subject status data message at the communicator to create an encoded subject status data message for transmission over the control channel as control signals;

    c) transmitting the encoded subject status data message over the control channel as control signals to a mobile switching center (MSC), bypassing the voice channel;

    d) decoding the encoded subject status data message at the MSC to retrieve the subject status data message;

    e) transmitting the subject status data message over a switched telephone network to a central monitoring station (CMS); and

    f) transmitting a command message from the CMS to the communicator.

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