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应用科学学报 ›› 2006, Vol. 24 ›› Issue (4): 391-395.

• 论文 • 上一篇    下一篇

一种基于邻近原则的应用层流媒体多播协议

庞丽萍, 袁泉, 邓大付, 郭祥洲, 张超, 金海   

  1. 华中科技大学计算机科学与技术学院, 湖北武汉 430074
  • 收稿日期:2005-03-07 修回日期:2005-05-27 出版日期:2006-07-31 发布日期:2006-07-31
  • 作者简介:庞丽萍,教授,博导,研究方向:并行分布式处理、分布实时系统,E-mail:alexy-hust@126.com
  • 基金资助:
    国家自然科学基金资助项目(60433040)

A Locality-Aware Protocol in Multicast Tree for Stream Media

PANG Li-ping, YUAN Quan, DENG Da-fu, GUO Xiang-zhou, ZHANG Chao, JIN Hai   

  1. College of Computer Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2005-03-07 Revised:2005-05-27 Online:2006-07-31 Published:2006-07-31

PDF

77

被引次数

6

摘要： 提出了一种基于邻近原则的用于视频流直播服务的应用层多播协议.协议通过使用每个节点预生成的网络坐标信息,按照邻近原则调度的方法,构建一棵低延迟、低连接压力的层次化单源多播树,同时协议解决了真实网络中的部分服务能力限制问题,扩大了系统的可扩展性和可用性.

关键词: 流媒体, 多播树, 邻近原则, 网络坐标

Abstract: This paper proposes a multicast protocol at the application level for efficiently broadcasting live media streams to a large number of users.The main idea of this protocol is to self-organize the end hosts into a locality-aware overlay multicast tree based on their network position coordinates.The result is that the overlay multicast tree has a good match to the underlying physical network such that the link stress and the end-to-end delay can be effectively reduced.In the mean time, real-life network constraints can be handled.

Key words: stream media, multicast tree, locality-aware, network position coordinate

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