摘要
针对现有流媒体算法在异构环境下性能恶化的问题,论文提出一种支持用户异构性的可重构流媒体调度算法——RSMS算法。该算法引入了追赶流的概念,能重构追赶流的速率来服务于具有不同接收带宽的异构用户,并最终通过流合并达到资源共享的目的。分析了RSMS算法的最佳组播调度间隔、所需的平均服务器带宽和服务器带宽需求分布。仿真实验表明该算法简单高效,可扩展性好。
Current stream scheduling algorithms have to compromise their performance in heterogeneous environments. A Reconfigurable Streaming Media Scheduling （RSMS） algorithm supporting user heterogeneity is proposed. The algorithm by using catching-up streams supports heterogeneous users reconfiguring catching-up streams at different transmission rates and achieves resources sharing ultimately through stream merging. The optimal multicast interval, the average server bandwidth and server bandwidth distribution for RSMS algorithm are all analyzed. The efficiency and scalability of RSMA algorithm are verified through simulation experiment.
出处
《电子与信息学报》
EI
CSCD
北大核心
2010年第2期255-260,共6页
Journal of Electronics & Information Technology
基金
国家973计划项目(2007CB307102)
国家863计划项目(2008AA01A323)资助课题
关键词
流媒体调度算法
用户异构性
追赶流
可重构
Streaming media scheduling algorithm
User heterogeneity
Catching-up stream
Reconfiguration
