摘要
P2P覆盖网中存在着拓扑不匹配、负载不均衡等问题,会对资源查询效果造成不可忽视的影响。本文提出在节点度数为幂率分布的异构网络中实现高效路由的三层覆盖网设计思想,设计相关的节点分类、成簇和地址分配方法。针对查询路径长度、负载均衡程度、查询成功率等多个性能指标展开分析,并通过仿真实验验证了相比以往的层次化覆盖网,本文提出的方法在多个方面具有明显的优越性。
In a P2P overlay network,such problems as the mismatch of topology and the imbalance of overlay exist,which may result in considerable negative effects on the performance of resource query.This paper proposes the idea of implementing 3-layer overlay for efficient routing in heterogenous networks with power-law degree distribution,and design the relevant method for node classification,node clustering and address allocation.It also makes a performance analysis from the aspects of query path length,degree of load balance,and query delivery ratio.Simulation results indicate that compared with former heriachical overlay,the overlay introduced in this paper excels in many aspects.
出处
《武汉船舶职业技术学院学报》
2010年第1期23-26,共4页
Journal of Wuhan Institute of Shipbuilding Technology
关键词
P2P
异构网络
拓扑意识
负载均衡
超级节点
P2P
heterogenous network
Topology awareness
load balance
super peer
