Abstract
Mobile communication is increasingly oriented towards the usage of all IP networks as fixed network components. The handover performance of mobile IPv6 is one of the key factors which guarantee the QoS of mobile Internet. In this paper, an enhance handover scheme in hierarchical MIPv6 networks by utilizing Passive Duplicate Address Detection (PDAD) to identify duplicate addresses is proposed. Using PDAD, a node examines incoming routing protocol packets to develop hints about address controversies. The simulations are performed using NS-2 to compare the handoff performance. The results show that the proposed scheme can get better performance in terms of packet loss and handoff delay.
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