Roaming and hand-off support for prepaid billing for wireless data networks

  • US 6,829,473 B2
  • Filed: 12/17/2002
  • Issued: 12/07/2004
  • Est. Priority Date: 07/25/2002
  • Status: Active Grant
First Claim
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1. A method for providing hand-offs for wireless prepaid services on a data network using prepaid billing, the method comprising:

  • a first-network-access device carrying on session activity of a wireless communication session with a wireless mobile node within a first coverage area;

    a second-network-access device establishing connectivity with the wireless mobile node after the wireless mobile node moves into a second coverage area;

    responsive to the second-network-access device establishing connectivity with the wireless mobile node, the first-network-access device tunneling the session activity to the second-network-access device;

    the first-network-access device receiving from a network-access-control device a block of credits;

    the first-network-access device periodically measuring usage of the session activity; and

    the first-network-access device debiting the usage of the session activity from the block of credits.

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