基于移动agent的无结构P2P网络拓扑重连方法研究

Topology adaptive approach based on mobile agent in unstructured P2P networks

为了提高无结构P2P网络中资源查找的效率,同时避免在资源查找过程中出现拥塞,提出了一种基于移动agent的网络拓扑重连方法。网络节点定期进行拓扑重连,同时通过收集其邻居节点的处理能力以及连通性等信息,指导移动agent有目的地在网络迁移,从而使移动agent及时发现网络节点上的拥塞,并使用拓扑优化机制降低节点上的负载。实验证明该方法能优化网络的拓扑结构,避免网络查询过程中发生拥塞,提高资源查找的效率,同时适应网络查询负载的动态变化。

To enhance the efficiency of resource location and avoid congestion in unstructured P2P（peer to peer） networks,this paper proposed a mobile agent based topology adaptation approach.Peers in the network launched reconnection mechanism periodically,and collected their neighbor peers＇ information such as processing capacity and connectedness to direct mobile agent to migrate in the network on purpose.Thus mobile agent could find congestions in peers effectively and used the topology optimization mechanism to decrease the query loads in those peers.Experimental results show that the algorithm can improve networks topology structure,avoid congestions,increase the efficiency of resource location,and adapt to the dynamic change of query loads.