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Method and system for restricting mobility using unique encrypted chargers

  • US 7,835,526 B2
  • Filed: 08/22/2006
  • Issued: 11/16/2010
  • Est. Priority Date: 08/21/2001
  • Status: Active Grant
First Claim
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1. A method for restricting mobility of a mobile apparatus for call processing within a wireless local loop, the method comprising:

  • encrypting a random number at the mobile apparatus;

    establishing a first connection with a charging apparatus;

    sending the random number from the mobile apparatus to the charging apparatus over the first connection;

    encrypting the random number at the charging apparatus;

    receiving at the mobile apparatus the encrypted random number from the charging apparatus over the first connection; and

    restricting mobility of the mobile apparatus by enabling the mobile apparatus to establish a second connection for call processing within the wireless local loop based on a successful comparison of the encrypted random number at the mobile apparatus with the encrypted random number received from the charging apparatus, and disabling the mobile apparatus from establishing the second connection for call processing within or outside the wireless local loop if the comparison is unsuccessful.

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