基于可重构路由器上缓存的流媒体协作分发策略  

Novel cooperative caching strategies for video streaming distribution based on reconfiguration routers

作　　者：何智聪[1] 谷光昭[1] 王新[1] 赵进[1] 薛向阳[1] 

机构地区：[1]复旦大学计算机科学技术学院智能信息处理上海市重点实验室,上海201203

出　　处：《通信学报》2012年第6期82-90,共9页Journal on Communications

基　　金：国家高技术研究发展计划("863"计划)基金资助项目(2009AA01A348);国家自然科学基金资助项目(61171074);国家科技重大专项基金资助项目(2010ZX03003-003-03);教育部新世纪优秀人才支持计划基金资助项目(NCET-11-0113)~~

摘　　要：提出一种新颖的基于可重构路由器上缓存的协作分发策略来加速流媒体。通过网络存储即多个边缘路由器节点对热点视频数据进行合作缓存,就近为用户提供服务,从而使得流媒体服务器的性能要求尤其是带宽需求得到巨大的降低,骨干网传输的流量也明显减少,同时用户响应延迟也得到明显的改善。此外,实现了一个原型系统来评价基于路由器上缓存的流媒体协作分发策略的性能,结果表明该方案相比于现有的方案在改善网络性能以及用户体验方面取得很大的提升。A novel cooperative caching scheme based on reconfiguration routers was proposed to accelerate the delivery of streaming media.Through cooperative caching for popular videos among the routers,the server capability,especially bandwidth requirements were decreased.Moreover,the traffic over the backbone network was dramatically reduced and user experience was also improved due to the edge routers providing services for the user quickly.Furthermore,implemented a prototype system is implemented to evaluate the scheme,and the results show great improvement over the state-of-the-art solutions.

关 键 词：流媒体 缓存 路由器 可重构网络 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]