一种基于树树结构的低时延应用层组播模型
发布时间：2018-07-24 08:10
【摘要】：作为IP组播的替代,应用层组播具有简单灵活的优势,获得了广泛应用,但时延较大的缺点对性能影响较大.针对大规模应用层组播时延较大的问题,提出一种层次化的树树组播模型来降低应用层组播时延,该模型利用两层结构来组织和管理应用层组播组成员,并考虑节点性能和节点间时延来构建较低时延的组播树.当节点加入或退出组播组时,设计合适的组播树维护算法使得组播树的时延变化较小,满足低时延要求.计算机仿真表明该树树组播模型能够有效降低应用层组播的时延,改善大规模应用层组播性能,适合应用在大规模实时多媒体环境中.
[Abstract]:As an alternative to IP multicast, application-layer multicast has the advantages of simplicity and flexibility, and has been widely used, but the shortcomings of longer delay have a great impact on performance. Aiming at the problem of large application layer multicast delay, a hierarchical tree multicast model is proposed to reduce the application layer multicast delay. The model uses a two-layer structure to organize and manage application layer multicast group members. The low delay multicast tree is constructed by considering node performance and inter-node delay. When the node joins or exits the multicast group, a suitable multicast tree maintenance algorithm is designed to make the delay of the multicast tree change little and meet the requirement of low delay. Computer simulation shows that the tree multicast model can effectively reduce the delay of application-layer multicast and improve the performance of large-scale application-layer multicast. It is suitable for large-scale real-time multimedia environment.
【作者单位】： 东华大学信息科学与技术学院;东华大学数字化纺织服装技术教育部工程研究中心;
【基金】：国家自然科学基金项目(71171045)资助 中央高校基本科研业务费专项基金项目(15D110422)资助
【分类号】：TP393.03
[Abstract]:As an alternative to IP multicast, application-layer multicast has the advantages of simplicity and flexibility, and has been widely used, but the shortcomings of longer delay have a great impact on performance. Aiming at the problem of large application layer multicast delay, a hierarchical tree multicast model is proposed to reduce the application layer multicast delay. The model uses a two-layer structure to organize and manage application layer multicast group members. The low delay multicast tree is constructed by considering node performance and inter-node delay. When the node joins or exits the multicast group, a suitable multicast tree maintenance algorithm is designed to make the delay of the multicast tree change little and meet the requirement of low delay. Computer simulation shows that the tree multicast model can effectively reduce the delay of application-layer multicast and improve the performance of large-scale application-layer multicast. It is suitable for large-scale real-time multimedia environment.
【作者单位】： 东华大学信息科学与技术学院;东华大学数字化纺织服装技术教育部工程研究中心;
【基金】：国家自然科学基金项目(71171045)资助 中央高校基本科研业务费专项基金项目(15D110422)资助
【分类号】：TP393.03
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