A QoS-aware overlay multicast routing protocol

被引：0
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作者：
Department of Computer Science and Engineering, Southeast University, Nanjing 210096, China [1 ]
不详 [2 ]
机构：
来源：
Jisuanji Xuebao | 2006年 / 11卷 / 1937-1947期
关键词：
Bandwidth - Heuristic methods - Multicasting - Quality of service - Routers - Video conferencing - Video on demand - Visual communication - Voice/data communication systems;
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学科分类号：
摘要：
The QoS routing problem in overlay multicast is studied, by extending the degree-constrained model, a new overlay multicast network model supporting QoS routing is presented. Based on this model, a new QoS overlay multicast routing protocol called QoS-aware Overlay Multicast Tree Protocol (QOMTP) is proposed. Adopting distributed and tree-first strategies, the protocol enables members of a multicast group to self-organize into a sourced-based overlay multicast tree satisfying QoS constraints. QOMTP used a new heuristic local optimum algorithm, which can make trade-off between delay and bandwidth of routing flexibly by adjusting a heuristic parameter. The simulation results show that QOMTP could reduce the network resource usage of members on the tree as well as achieve a higher admission rate of members and better dynamic adaptability efficiently, while distributing multimedia according to the required bandwidth and choosing a proper value of the heuristic parameter.
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