基于联合调度和DHT补偿的P2P直播系统播放质量改善策略(英文)

作     者：陈卓 冯钢 陆毅 周杨 

作者机构：National Key Laboratory of Science and Technology on CommunicationsUniversity of Electronic Science and Technology of China College of Computer Science and EngineeringChongqing University of Technology College of ComputingGeorgia Institute of TechnologyAtlanta 30332USA 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2013年第10卷第6期

页      面：127-145页

核心收录：

学科分类：0810[工学-信息与通信工程] 0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 0839[工学-网络空间安全] 08[工学] 081201[工学-计算机系统结构] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Programs for Science and Technology under Grant No. 2009ZX03004-002 the National Natural Science Foundation of China Major Project under Grant No. 60833002 the National Natural Science Foundation of China under Grant No.60772142 the National Science and Technology Major Projects under Grant No. 2008ZX03003-005 the Science and Technology Research Project of Chongqing Education Commission under Grant No. KJ120825 

主　　题：分布式哈希表 流媒体系统 播放质量 联合调度 补偿机制 直播系统 点对点 基础 

摘      要：In Peer-to-Peer(P2P) streaming systems,video data may be lost since peers can join and leave the overlay network randomly,thereby deteriorating the video playback *** this paper we propose a new hybrid mesh and Distributed Hash Table(DHT) based P2P streaming system,called HQMedia,to provide high playback quality to users by maintaining high data dissemination resilience with a low *** HQMedia,peers are classified into Super Peers(SP) and Common Peers(CP) according to their online *** and CPs form a mesh structure,while SPs alone form a new Streaming DHT(SDHT) *** this hybrid architecture,we propose a joint scheduling and compensation *** any frames cannot be obtained during the scheduling phase,an SDHT-based compensation mechanism is invoked for retrieving the missing frames near the playback *** evaluate the performance of HQMedia by both theoretical analysis and intensive simulation experiments on large-scale networks to demonstrate the effectiveness and scalability of the proposed *** results show that HQMedia significantly outperforms existing mesh-based and treebased P2P live streaming systems by improving playback quality with only less than 1% extra maintenance overhead.