Cross-Layer Design for Reducing Handoff Latency in Mobile Network

Springer-Verlag Lecture Notes in Computer Science, vol. 4706, pp. 216-225, Aug. 2007

Won Jin Jung, Hyung Joo Ki, Tae-Jin Lee, Hyunseung Choo, and Min Young Chung


In the last year, the Internet engineering task force (IETF) adopted the network mobility (NEMO) basic support protocol (NBS) as a request for comments (RFC) to make possible Internet access services on mobile networks. Even though the NBS has opened a new era in NEMO, its long handoff latency should be solved for the support of seamless services. In this paper, we propose a cross-layer scheme using modified reassociation frame to reduce handoff latency in the presence of movements of both the network and the nodes. In addition, the proposed scheme introduces use of a cache to manage the addresses of the mobile nodes (MN) and the mobile routers (MR), and assigns a unique address to each MN or the network based on the information in the cache. We compare the performance of the proposed scheme with those of MIPv6, FMIPv6, and HMIPv6. From the results, the handoff latency of the proposed scheme is lower about 30-80% than those of other algorithms. In addition, the proposed scheme shows 56% higher cost efficiency than others.




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