【摘要】 移动自组织网络中(MANET)基于位置的路由算法为每个节点维护一份邻居列表信息,而节点的随机移动以及网络拓扑的频繁变化导致节点的邻居列表信息更新不及时并导致路由错误,另一方面,对于平稳的网络环境,频繁的更新节点位置信息则导致较高的网络开销。对此,提出了一种基于模糊控制的动态MANET路由优化算法。对MANET中节点移动速度、邻居节点数量以及位置信息更新频率建立模糊规则,并动态的控制网络参数。对比实验结果证明,本算法改善了传统基于地址信息路由协议的数据包投递率、控制包比例以及端到端延迟等重要性能参数。更多还原

【Abstract】 Mobile Ad-hoc networks(MANET) maintain a neighbor list information for each node in the position based route protocol, but the random mobility and frequent change of network topology lead to the situation that the neighbor list information is not updated timely, which leads to data transmission failure. On the other hand, in the stable network environment, the overhead is enhanced by frequently updating the position information. Aimed at that, an optimal algorithm based on fuzzy control is proposed. The fuzzy rules for motion speed, neighbor number and position information updating frequency are set up, and the network parameters are adaptively controlled. Experiment results prove that the proposed algorithm improves the data packet delivery ratio, control packet ration and peer-to-peer delay of the conventional route protocol.更多还原