移动P2P网络中基于超级节点的资源发现算法

Resource Discovery Algorithm Based on Super-peer in Mobile Peer-to-Peer Network

移动P2P网络节点具有的移动性,往往导致网络搜索性能变差,同时引起资源搜索成功率的降低以及系统的不稳定性.本文提出一种基于超级节点的资源发现算法(RDBS),它选择性能高且动态性弱的节点作为超级节点,并采用候补超级节点进行快速查询,有效改善了移动P2P网络中资源搜索性能和系统的稳定性.实验结果表明,该算法降低了索引信息的失效率、缩短了查询延迟并且提高了资源搜索的成功率.

In mobile peer-to-peer network, peers have a strong ability of moving, which make the searching performance of network worsen, resulting in lower success rate of resource discovery and system instability. The proposed algorithm, that is the resource discovery algorithm based on super-peer, can select a peer with high capability and weak dynamic as a super-peer, and adopting backup super-peer to query quickly. It improves the performance of resource search and system stability in mobile peer-to-peer network. The experimental results show that the proposed algorithm could reduce the failure rate of index information, shorten the query delay and enhance the success rate of resource search.