Dynamic home agent system for wireless communication systems

Details Dynamic home agent system for wireless communication systems Dynamic home agent system for wireless communication systems

H - Electricity

04

Q

H04Q 7/36 (2006.01) H04L 12/56 (2006.01) H04L 29/06 (2006.01) H04Q 7/22 (2006.01)

Patent

CA 2314949

The dynamic Home Agent system for wireless communication systems uses the existing infrastructure of the telephony signaling networks and enhanced cellular authentication centers to support dynamic Home Agents, either in visited wireless networks or home wireless networks in a secure manner to provide packet data services to a roaming mobile subscriber station. Authentication Centers are deployed in these networks as a cellular security mechanism to provide cellular service qualification checks and to prevent cellular fraud by the exchange of confidential keys. The cellular security mechanism is enhanced by the use of an additional key, the Dynamic Mobile IP Key (DMIPKEY) which is used by the dynamic Home Agent in the visited wireless network for authenticating Mobile IP registrations requested by the mobile subscriber station. In ANSI systems, the DMIPKEY can be derived from the Shared Secret Data key or Shared Secret Data part A (SSD_A), since the latter is used for authentication purposes. With necessary CAVE algorithm enhancements, both a mobile subscriber station equipped with the CAVE algorithm and its Authentication Center can independently produce the DMIPKEY. Since the mobile subscriber station is equipped with the CAVE algorithm, the DMIPKEY does not need to be transmitted over the air.

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