Exploiting multihoming for low latency handoff in heterogeneous networks

Low latency handoff is critical for supporting delay sensitive applications on a mobile device. Recent advances in hardware technology have made it possible for mobile devices to interface with multiple networks of different types. In this paper, we explore how this "multihoming" feature effectively reduces handoff latency and corresponding packet loss. We present a number of strategies for link layer handoff. In the proposed scheme, link-layer association procedures and MIP handoff operations are performed proactively to reduce the handoff delay. The paper presents an analysis of the scheme and experimental results based on simulation using ns-2. The results substantiate the efficacy of the scheme in reducing the handoff delay significantly. Keywords—low latency handoff, multihoming, seamless mobility.