一种基于响应度的P2P点播流媒体系统激励机制  

A Responsivity-Based Incentive Mechanism For P2P VoD Systems

作　　者：冯健[1] 张建华[1] 温乃宁[1] 

机构地区：[1]西安科技大学计算机科学与技术学院,陕西西安710054

出　　处：《微电子学与计算机》2009年第6期198-201,共4页Microelectronics & Computer

基　　金：西安科技大学科研培育基金项目(200827);西安科技大学博士科研启动基金项目(A503111)

摘　　要：针对P2P点播流媒体系统中的搭便车问题,提出了一个基于结点响应度的激励机制GBIM(Responsivity-Based Incentive Mechanism).该机制根据结点对来自其它结点数据请求的响应度提供不同网络服务质量,从而激励邻居结点彼此协作,更多地贡献带宽资源,使系统效用最大化.仿真实验表明:GBIM机制促进了系统效用的增长,提高了系统的吞吐量,达到了激励节点参与资源共享的目的.Aiming to solve free riding problem in P2P（peer-to-peer） on-demand streaming media systems, an mcentlve mechanism GBIM （Responsivity-Based Incentive Mechanism） is proposed in this paper. The mechanism provided peers with different network＇s service quality according to their responsivity to other peers＇ data request and therefore every peer was encouraged to cooperate with others or share their resource, so as to maximize system utility. Through simulation and comparison, it is showed that GBIM mechanism accelerated system utility growth and improved system throughput, it can discard the free-rider from system effectively and encourage the node sharing more bandwidth to earn more reward.

关 键 词：P2P点播流媒体 响应度 激励机制 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]