P2P流媒体系统中,减少ISP(Internet Service Provider)交叉流量是一个重要的研究方向,本文提出了一种减少ISP交叉流量的P2P流媒体方案,方案综合考虑了Pull机制、DHT(Distributed Hash Table,分布式哈希表)原理和IPv6地址的聚类特性,从网络拓扑构建和包调度机制两个方面,通过增加ISP内数据共享和减少ISP间数据请求的方式,减少P2P流媒体系统中的ISP交叉流量.仿真结果显示,在大规模系统中,该方案能够有效的减少ISP交叉流量.
One key issue in P2P streaming system is large amount of cross-ISP traffic.To address this problem,this paper proposed a structured p2p streaming framework,which incorporates DHT(Distributed Hash Table),Pull mechanism and the clustering characteristics of IPv6 addresses.By increasing data sharing in intra-ISP and restricting data request between inter-ISP,our framework could effectively reduce cross-ISP traffic from both overlay construction and data scheduling.Simulation results show the effectiveness of our method in large-scale P2P streaming system.