Benefiting from providing multi-dimensional view of peers in overlay of P2P streaming system  

作　　者：苏杭 Wang Jinlin You Jiali 

机构地区：[1]Graduate University of Chinese Academy of Sciences [2]National Network New Media Engineering Research Center,Institute of Acoustics,Chinese Academy of Sciences

出　　处：《High Technology Letters》2013年第2期214-220,共7页高技术通讯（英文版）

基　　金：Supported by the National High Technology Research and Development Programme of China(No.2008AA01A317);the National Natural Science Foundation of China(No.60903218)

摘　　要：Most overlay of existing P2P streaming systems just focus on the view point of video content data.An multi-dimensional overlay for the P2P streaming system(MDOPS) is proposed for providing multi-dimensional view including video data,peers' service capability and online stability based on locality sensitive hashing.MDOPS organizes all Live/VoD peers and the above multi-dimensional information in a one-dimensinal DHT,uses range resource information publish/search and introduces multiple load balancing methods.MDOPS maintains an additional candidate coordinating peer list with high qualified peers who own the video data the peer would possibly access currently and in future.This list could speed up the process of searching peers for data scheduling layer.Simulation experiment based on trace of real streaming system has testified that MDOPS can effectively improve the quality of search results and smooth load distribution among peers without increasing the cost of resource publish/search.Most overlay of existing P2P streaming systems just focus on the view point of video content da- ta. An multi-dimensional overlay for the P2P streaming system （MDOPS） is proposed for providing multi-dimensional view including video data, peers＇ service capability and online stability based on locality sensitive hashing. MDOPS organizes all Live/VoD peers and the above multi-dimensional in- formation in a one-dimensinal DHT, uses range resource information publish/search and introduces multiple load balancing methods. MDOPS maintains an additional candidate coordinating peer list with high qualified peers who own the video data the peer would possibly access currently and in fu- ture. This list could speed up the process of searching peers for data scheduling layer. Simulation experiment based on trace of real streaming system has testified that MDOPS can effectively improve the quality of search results and smooth load distribution among peers without increasing the cost of resource publish/search.

关 键 词：Peer-to-Peer （P＇2P） STREAMING OVERLAY locality sensitive hashing rangesearch load balance 

分 类 号：TP393.02[自动化与计算机技术—计算机应用技术] TN919.8[自动化与计算机技术—计算机科学与技术]