Journal of South China University of Technology (Natural Science Edition) ›› 2007, Vol. 35 ›› Issue (9): 78-84.

• Computer Science & Technology • Previous Articles     Next Articles

DOMulti: A Delay-Optimized P2P Application Layer Multicast Protocol

Lin Long-xin  Zhou Jie  Zhang Ling  Ye Zhao   

  1. Guangdong Key Laboratory of Computer Network , South China Univ. of Tech. , Guangzhou 510640 , Guangdong , China
  • Received:2006-11-02 Online:2007-09-25 Published:2007-09-25
  • Contact: 林龙新(1975-)，男，博士生，主要从事应用层组播、对等网络和移动通信网络方面的研究。 E-mail:lxlin@scut. edu. cn
  • About author:林龙新(1975-)，男，博士生，主要从事应用层组播、对等网络和移动通信网络方面的研究。
  • Supported by:

    国家"973" 计划项目( 2003 CB314805 ) ;国家科技基础条件平台项目(2005DKA64001) ;粤港关键领域重点突破项目

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Abstract:

In the existing structured peer-to-peer (P2P) application layer multicast schemes , the end-to-end delay from the source to group members is high and the multicast delivelγtree is unstable. In order to overcome these demerits , this paper presents a new P2P application layer multicast protocol named DOMulti. In this protocol , the Tapestry routing and the data location service are utilized to construct a multicast delivelγtree with bounded depth and constrained out-degree of node. As there are no non-group members in the deliverγtree ， the transmission delay between the source and group members can be optimized and the stability of the tree can be improved. Simulated results indicate that , as compared with the existing protocol , DOMulti is of distinct advantages in terms of end-toend delay and is more suitable for the delay-sensitive multicast applications in P2P environment.

Key words: multicast, application layer multicast, protocol, peer-to-peer network, delay