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Mobility management is important to wireless networks, but increased speed and efficiency are hampered by problems of triangular routing, signaling overhead and binding cache support. A new approach called Mobile IP with Home Agent Handover (HH-MIP) proposed to enjoy most of the advantages of ROMIP but with only a small increase of signaling overhead. The HH-MIP approach is an efficient mechanism to eliminate ROMIP shortcomings without introduces large signaling cost, and the results show that HH-MIP could reduce both transmission path and handoff latency efficiently as compared with the previous mechanisms. Although HH-MIP has great performance, it demands all routers in Foreign Networks to support combined functionalities of both Temporary Home Agent (THA) and Foreign Agent (FA).
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