摘要
针对结构化点对点模型中物理拓扑与逻辑拓扑不匹配的现象,结合Chord模型和混合Chord模型,提出一种基于物理拓扑的改进模型。利用网络区域性,在每个自治系统内选择度数最大的节点作为超级节点(SN),不同SN在上层构成Chord环,从而使模型的逻辑拓扑与网络物理拓扑相吻合,减少资源定位和访问的路由跳数。实验结果表明,该模型能减少平均路由跳数、降低平均时延。
Because the physical topology can not match with the logical topology for structured Peer-to-Peer（P2P） model, so this paper puts forward a physical topology model based on Chord model and hybrid Chord model. It selects the node with maximum degree as Super Node（SN） in Autonomous System（AS） using network regionality, different SN forms Chord ring. In this case, the model logical topology can match with physical topology, which reduces the hop counts in resource location and access. On this basis, improvement of routing table makes less network time delay. Simulation experimental result shows that the model has less average hop counts and lower average time delay.
出处
《计算机工程》
CAS
CSCD
2012年第6期98-100,共3页
Computer Engineering
基金
重庆市自然科学基金资助项目(CSTC
2010BB2248)
中央高校基本科研业务费专项基金资助项目(CDJZR10090002)
