摘要
为了在高动态性的P2P网络拓扑下选择高效的合作节点,以路由相似思想对节点所属的自治区域进行探测,用探测到的各个节点所在的自治域的信息代替传统策略中假设自治域完全拓扑信息已知这个条件,结合逻辑和物理最小跳策略进行节点的选择,增强实际可用性。根据节点的优良性以及聚合流速率,优先选择最优的邻近节点作为新加入节点的供给节点,解决了最小跳策略中候选节点优先级相同的问题。仿真结果表明,改进后的策略相对于原策略,网络堵塞及流服务质量得到了明显的改善。
In order to select the efficient cooperative peers in the highly dynamic topology P2P network,this paper detected AS with the idea of using a similar route method.It substituted the full topology information of the known AS with the AS information where peer located.As well as combined the strategy of the smallest number of hops to select peers.In addition to the excellence of the peer and the aggregate flow rate to choose the best peer or peer-set as the supply of new peers added.And it solved the minimum-hop candidate peers with the same priority issues.Simulation results show that in the improved strategies the network congestion has been reduced and the quality of the streaming service has been significantly improved compared with the previous strategies.
出处
《计算机应用研究》
CSCD
北大核心
2012年第4期1536-1539,共4页
Application Research of Computers
基金
河南省重大攻关项目(092101210104)
河南省教育厅资助项目(2008A520024)
郑州科技厅产学研专项资助项目(085SCXY00015)
河南省留学回国高级访问学者科研基金资助项目
关键词
P2P流媒体
节点选择策略
最小逻辑跳
最小物理跳
节点优良性
P2P streaming media
peer selection strategy
minimum logical hop
minimum physical hop
excellence of peers
