P2P traffic optimization  

作　　者：ZHANG GuoQiang TANG MingDong CHENG SuQi ZHANG GuoQing SONG HaiBin CAO JiGuang YANG Jing 

机构地区：[1]School of Computer Science and Technology,Nanjing Normal University,Nanjing 210046,China [2]Institute of Computing Technology,Chinese Academy of Sciences,Beijing 100190,China [3]School of Computer Science and Engineering,Hunan University of Science and Technology Xiangtan 411201,China [4]Graduate University of Chinese Academy of Sciences,Beijing 100190,China [5]Nanjing R&D Center,Huawei Technologies,Nanjing 210012,China [6]China Academy of Telecommunication Research of MIIT,Beijing 100191,China [7]China Mobile Research Institute,Beijing 100053,China

出　　处：《Science China(Information Sciences)》2012年第7期1475-1492,共18页中国科学（信息科学）（英文版）

基　　金：supported by National Natural Science Foundation of China (Grant No. 61100178);National Basic Research Program of China (Grant No. 2012CB315802);Startup Foundation of Nanjing Normal University(Grant No. 2011119XGQ0248);Beijing Natural Science Foundation (Grant No. 4112057);National Science and Technology Major Project (Grant No. 2011ZX03002-002-03)

摘　　要：Peer-to-peer （P2P） based content distribution systems have emerged as the main form for content distribution on the Interact, which can greatly reduce the distribution cost of content providers and improve the overall system scalability. However, the mismatch between the overlay and underlay networks causes large volume of redundant traffic, which intensifies the tension between P2P content providers and ISPs. Therefore, how to efficiently use network resources to reduce the traffic burden on the ISPs is crucial for the sustainable development of P2P systems. This paper surveys the state-of-art P2P traff^c optimization technologies from three perspectives： P2P cache, locality-awareness and data scheduling. Technological details, comparison between these technologies and their applicabilities are presented, followed by a discussion of the issues that remain to be addressed and the direction of future content distribution research.Peer-to-peer （P2P） based content distribution systems have emerged as the main form for content distribution on the Interact, which can greatly reduce the distribution cost of content providers and improve the overall system scalability. However, the mismatch between the overlay and underlay networks causes large volume of redundant traffic, which intensifies the tension between P2P content providers and ISPs. Therefore, how to efficiently use network resources to reduce the traffic burden on the ISPs is crucial for the sustainable development of P2P systems. This paper surveys the state-of-art P2P traff^c optimization technologies from three perspectives： P2P cache, locality-awareness and data scheduling. Technological details, comparison between these technologies and their applicabilities are presented, followed by a discussion of the issues that remain to be addressed and the direction of future content distribution research.

关 键 词：P2P traffic localization P2P traffic optimization P2P cache locality-awareness network coding content-centric network 

分 类 号：TP393.4[自动化与计算机技术—计算机应用技术] TP311.13[自动化与计算机技术—计算机科学与技术]