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PNNI层次网络模型下的动态组播路由算法

Keywords: 层次网络,PNNI,组播路由,QoS,动态

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Abstract:

提出以通用层次网络模型(PNNI)为基础的,支持带宽-时延约束的动态层次组播路由算法(delay-bandwidthconstrainedPNNIhierarchicalmulticastrouting,DB-PHMR).为实现组成员的动态跨域加入,设计了跨域分支计算、中间域内分支细化以及目地域内嫁接点优化等3大步骤.对所构建的跨域组播树不存在环路进行了理论证明.仿真结果表明,DB-PHMR不仅解决了PNNI模型下的时延-带宽约束的动态跨域组播路由问题,且能与各种信息聚集方法无缝结合,在

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