基于P2P的流媒体系统资源定位机制研究  

Research on the Resource Search Method for P2P-Based Media Streaming Systems

作　　者：李莉[1] 韩慧健[1] 

机构地区：[1]山东经济学院计算机科学与技术学院,山东济南250014

出　　处：《计算机工程与科学》2009年第8期104-106,120,共4页Computer Engineering & Science

基　　金：国家自然科学基金资助项目(60603077);山东省自然科学基金资助项目(Y2006G31);山东经济学院校级科研资助项目(01610854)

摘　　要：针对P2P流媒体系统资源定位问题,本文提出一种改进的P2P无结构网络模型及相应的搜索算法。网络模型中根据节点能力把节点分成不同级别,文件信息发布按照低级节点向高级节点逐级汇报的方向进行,减少了查询延迟时间和消息冗余;同时,根据节点兴趣把节点分为不同的兴趣域,查询消息在兴趣域内传播,提高了搜索效率和搜索成功率。仿真实验证明了网络模型和搜索算法的有效性。An improved network model and the corresponding search algorithm are proposed to resolve the resource search problem of P2P-based media streaming systems. According to the peers＇ abilities, peers are labeled with different levels in network models and the file information are reported from the low-level peers to high-level peers, so the delay time and information redundancy are reduced. Meanwhile,according to the interests, peers are grouped into different interest regions, and the query information is diffused in the interest regions to increase the search success rate and the search efficiency. The simulation experiments verify the effectiveness of the network model and the search algorithm.

关 键 词：点对点网络 流媒体系统 资源定位 兴趣域 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]