A Seamless Handoff for Dual-interfaced Mobile Devices in Hybrid Wireless Access Networks

  • Authors:
  • Riaz Inayat;Reiji Aibara;Kouji Nishimura

  • Affiliations:
  • -;-;-

  • Venue:
  • AINA '04 Proceedings of the 18th International Conference on Advanced Information Networking and Applications - Volume 2
  • Year:
  • 2004

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Abstract

Today's wireless access networks consist of severaloverlapping tiers. Provision of real time undisruptedcommunication to mobile users, anywhere and anytimethrough these heterogeneous overlay networks, is achallenging task. This paper presents a handofftechnique for mobile devices equipped with dual modeinterfaces. The proposed mobile-controlled handoffscheme reduces the service disruption time during bothhorizontal as well as vertical handoffs. We exploit the IPdiversity created by the dual interfaces in theoverlapping area by simultaneously connecting todifferent subnets or networks. Power saving is achievedby activating both interfaces only during the handoffperiod. The analysis shows that with proper networkengineering the service disruption during handoff can bereduced significantly by exploiting the overlapping areabetween subnets. With more powerful network interfacesour proposal of dual interfaces can be realized.