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Query Adaptation Techniques in Temporal-DHT for P2P Media Streaming Applications

机译:用于P2P媒体流的时间DHT中的查询适应技术

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Peer-to-Peer (P2P)-based approach for on-demand video streaming systems (P2P-VoD) characterized by asynchronous user-interactivity has proven to be practical and effective in recent years with real-world Internet-scale deployment (Huang, Li, & Ross, 2007). Current state-of-art P2P-VoD systems employ tracker server for discovering content suppliers which poses scalability and bottleneck issues. Temporal-DHT is a structured P2P based approach which can efficiently accommodate the large number of update operations with the continuous change of user's playing position and supporting asynchronous jumps (Bhattacharya, Yang, & Zhang, 2010). The authors propose different query adaptation strategies based upon content popularity distributions and shortage bandwidth ratios which are proved to be effective in improving the performance of P2P streaming system by deriving certain optimized solutions. They formulate valuable optimization problems in the context of a P2P- VoD system such as minimization of query search cost, server bandwidth consumption, and a joint cost-load framework The authors provide optimized solutions that achieve the best result for the above mentioned optimization objectives. They show extensive simulation studies under various scenarios of search cost, streaming quality, and other associated factors in a dynamic network environment where users are free to asynchronously join/leave the system.
机译:基于点对点(P2P)的按需视频流传输系统(P2P-VoD)的方法,具有异步用户交互性,近年来在现实世界的Internet规模部署中被证明是切实可行和有效的(Huang, Li和Ross,2007年)。当前最先进的P2P-VoD系统采用跟踪服务器来发现内容供应商,这带来了可伸缩性和瓶颈问题。 Temporal-DHT是一种基于P2P的结构化方法,可以随着用户演奏位置的不断变化并支持异步跳转而有效地容纳大量更新操作(Bhattacharya,Yang,&Zhang,2010)。作者提出了基于内容流行度分布和短缺带宽比率的不同查询自适应策略,这些策略被证明可以通过推导某些优化解决方案来有效提高P2P流系统的性能。他们在P2P-VoD系统的上下文中提出了有价值的优化问题,例如最小化查询搜索成本,服务器带宽消耗以及联合的成本负载框架。作者提供了优化的解决方案,可以实现上述优化目标的最佳结果。它们显示了在动态网络环境中,用户可以自由地异步加入/离开系统的各种情况下,在各种搜索成本,流质量和其他相关因素下进行的广泛模拟研究。

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