[01] Tamijetchelvy Ramachandiran, Department of Electronics & Communication Engineering, Pondicherry Engineering College, Puducherry, India. [02] G. Sivaradje, Department of Electronics & Communication Engineering, Pondicherry Engineering College, Puducherry, India.

The integration of available wireless access technology becomes an essential part of mobile communication. Interworking of wireless network promises the best quality of service and supports the cooperation of all the layers. In such heterogeneous background, mobility management and seamless service is still an important issue. Existing centralized approach lacks support its suitability in terms of dynamic mobility, scalability, reliability, seamless connectivity, etc. Hence a novel IEEE 802.21 media independent handover (MIH) assisted distributed Mobility Management (DMM) solution is proposed for handover optimization across heterogeneous (WiMAX, UMTS, WLAN etc.) environments based on PMIPv6 protocol. In DMM, the mobility anchors are distributed at an access network level in order to assist the fast exchange of signaling information during a handover operation in mobile internet. The vertical handover performance factors are compared with existing centralized mobility management (CMM) scheme in terms of packet loss, handover delay and throughput. Simulation result proves that the MIH assisted PMIPv6-DMM achieves seamless service by minimizing the handover delay, improves the network throughput for real time and non-real time applications.

Vertical Handover, Mobility Management, Heterogeneous Network, IEEE 802.21 MIH, Mobile Internetworking, Proxy MIPv6, Quality of Service

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