| 一种新的基于封装的区分服务多播方案QoSAMDD |
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| 引用本文： | 王晓燕,郑明春. 一种新的基于封装的区分服务多播方案QoSAMDD[J]. 山东师范大学学报(自然科学版), 2012, 27(2): 17-19,25 |
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| 作者姓名： | 王晓燕 郑明春 |
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| 作者单位： | 1. 山东中医药大学理工学院 250035 济南
2. 山东师范大学管理科学与工程学院 250014 济南 |
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| 基金项目： | 山东省自然科学基金资助项目，山东省高等学校科技计划项目 |
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| 摘 要： | 笔者旨在设计一种性能优越的基于区分服务框架的QoS多播方案，支持组内成员数可扩展，允许成员动态的加／V离开．文中提出一种新的基于封装的区分服务多播方案QoSAMDD，增加了控制多播分组复制和选路的IP扩展首部树结构封装域，并在新成员加入时引入了延时T，避免带宽不足时频繁申请加入．经理论分析，QoSAMDD代价不超过基于边界类方案，且灵敏度更高；完全解决了被忽略的预留子树问题，且支持组大小可扩展．通过仿真实验与基于边界类方案的优秀代表EBM方案进行比较，QoSAMDD在吞吐量和与TCP流的公平性等方面表现更好．
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| 关 键 词： | 区分服务 多播 QoS 仿真 网络仿真器Ns-2 |
A NEW EFFICIENT ENCAPSULATION- BASED SCHEME- -QOS -AWARE MULTICAST OVER DIFF SERV DOMAINS (QoSAMDD) |
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| Wang Xiaoyan , Zheng Mingchun. A NEW EFFICIENT ENCAPSULATION- BASED SCHEME- -QOS -AWARE MULTICAST OVER DIFF SERV DOMAINS (QoSAMDD)[J]. Journal of Shandong Normal University(Natural Science), 2012, 27(2): 17-19,25 |
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| Authors: | Wang Xiaoyan Zheng Mingchun |
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| Affiliation: | 1 ) School of Science and Technology, Shandong University of TCM, 250035, Jinan, China; 2) School of Management Science and Engineering, Shandong Normal University, 250014, Jinan, China ) |
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| Abstract: | This paper aims to design an efficient QoS - aware multicast scheme over Diff Serv Domains, which can solve the problem of extensive group size, number of groups, heterogeneous QoS supporting and dynamic mem- bership join/leave. This paper propose an Encapsulation - Based scheme - QoS - Aware Multicast over Diff Serv Domains （QoSAMDD）, in which TSEF is to control the packets＇ copying and routing, and a timer T is introduced to avoid applying to join the tree frequently when bandwidth is insufficient. According to the theoretical studies and simulating results, the cost of QoSAMDD is not more than the Edge - based schemes＇ , and QoSAMDD satisfies the three conflicts between Diff Serv and multicast while incurring a negligible overhead, and it is better than EBM in Resources management, throughput and etc. |
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| Keywords: | differentiated services multicast QoS simulate network simulator version2 |
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