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一种时延受限的多播路由算法
引用本文:张锁太,顾乃杰,刘刚,刘小虎.一种时延受限的多播路由算法[J].计算机工程,2007,33(20):113-115.
作者姓名:张锁太  顾乃杰  刘刚  刘小虎
作者单位:中国科学技术大学计算机科学与技术系,合肥,230027;安徽省计算与通信软件重点实验室,合肥,230027
基金项目:中国科学院软件研究所计算机科学重点实验室开放课题基金
摘    要:很多实时多媒体应用要求通信网络提供多播服务支持,而且往往需要传输的信息满足源端到目的端的时延约束。该文对时延约束的多播路由问题进行了研究,基于原有的从源端到目的端的时延受限路径构造算法,提出了一种时延受限多播路由算法。该算法能够快速构建满足时延约束的多播树。理论分析表明,该算法的时间复杂度和CDKS算法相同。仿真实验结果表明,该算法所构建的多播树代价低于CDKS算法。

关 键 词:多播路由  时延约束  受限的Steiner树
文章编号:1000-3428(2007)20-0113-03
修稿时间:2006年10月25

Delay-constrained Multicast Routing Algorithm
ZHANG Suo-tai,GU Nai-jie,LIU Gang,LIU Xiao-hu.Delay-constrained Multicast Routing Algorithm[J].Computer Engineering,2007,33(20):113-115.
Authors:ZHANG Suo-tai  GU Nai-jie  LIU Gang  LIU Xiao-hu
Affiliation:(1. Department of Computer Science and Technology, University of Science and Technology of China, Hefei 230027; 2. Anhui Province Key Laboratory of Computing and Communication Software, Hefei 230027)
Abstract:In real-time multimedia applications,multicast,especially the demand of delay constraint from source to destination end during information transmission,is required.This paper concentrates on multicast routing problem with end-to-end delay bounded.Based on the original algorithm which constructs the delay-constrained path from source end to destination end,this paper presents an algorithm to solve DMR(delay-constrained multicast routing) problem.The algorithm can construct delay-constrained multicast tree efficiently.Theoretical analyses indicate the time complexity of the algorithm is the same as that of CDKS.Besides,simulation results prove that this algorithm can construct a multicast tree whose cost is lower than CDKS.
Keywords:multicast routing  delay constraint  constrained Steiner tree
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