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Ubiquitous Wireless Network will be the important infrastructure for ubiquitous information service in the future. Ubiquitous Wireless Network is objectively heterogeneous network, so vertical handoff is one of crucial topics. A vertical soft handoff scheme is proposed based on SIP using Wireless Access Gateway (RGW). RGW triggers and controls the handoff session to ensure same two-way delay of handoff...
The paper proposes a converged architecture of home network and IMS based on home IMS gateway, gaping their heterogeneity and implementing convergence on data plane, control plane and management plane. Aiming at issues of interoperation, QoS and mobility, the architecture provides solution schemes, respectively. Through its implementation of modularized hardware and layered software, availability...
P2P services develop rapidly in Internet where the P2P traffic has surpassed Web. Providing P2P services in the mobile network is becoming a big opportunity but also challenge for mobile operators. Considering both characteristics of mobile network and P2P mode, the architecture of HIKEC, an IMS-based mobile P2P file sharing service, is proposed in this paper. The hybrid Napster + Chord overlay network...
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