计算机工程与应用 ›› 2009, Vol. 45 ›› Issue (21): 8-15.DOI: 10.3778/j.issn.1002-8331.2009.21.003

• 博士论坛 • 上一篇    下一篇

面向QoS的域间实时流覆盖组播方法研究

袁 景,高 远   

  1. 辽宁工程技术大学,辽宁 阜新 123000
  • 收稿日期:2009-03-31 修回日期:2009-05-14 出版日期:2009-07-21 发布日期:2009-07-21
  • 通讯作者: 袁 景

QoS-oriented interdomain live streaming overlay multicast algorithm

YUAN Jing,GAO Yuan   

  1. Liaoning Technical University,Fuxin,Liaoning 123000,China
  • Received:2009-03-31 Revised:2009-05-14 Online:2009-07-21 Published:2009-07-21
  • Contact: YUAN Jing

摘要: 针对跨域远程协作中的实时流通信质量问题,构建了实时流服务网格(LSSG),这是一个可扩展的且面向用户QoS需求的覆盖组播通信中间件结构,LSSG服务由网络服务提供商策略部署的服务代理(SvB)提供。论文主要采用面向QoS的域间覆盖组播算法(QIOM)来组织SvB建立实时流组播服务树,根据用户服务质量请求提供跨自治系统的实时流组通信服务,将域间资源管理转变为流媒体应用的动态协同服务管理。仿真结果表明QIOM能有效地发现和提供QoS满意的覆盖服务及实现SvB间的覆盖流量负载平衡。

关键词: 服务质量, 实时流, 覆盖组播, 实时流服务网格, 域间覆盖组播树

Abstract: This paper develops a live streaming service grid(LSSG) as an extensible overlay multicast middleware architecture for supporting live media applications in tele-cooperate environment over multiple domain.The LSSG service is provided by the service brokers nodes(SvB) which are strategically deployed by network service providers.This paper mainly presents a QoS-oriented inter-domain overlay multicast algorithm(QIOM),which is used to organize the SvB to build a QoS-aware multicast service tree.It is an overlay based the multicast connection solution for live media relay in different domains,which makes the inter-domains resource management turning to the dynamic cooperating service management.The simulation results show that the QIOM algorithms can effectively find and provide QoS-assured overlay services and balance the overlay traffic burden among the SvB.

Key words: Quality of Service(QoS), live streaming, live media service grid, interdomain overlay multicast tree