【作者】 何珏；

【导师】 陈建二；

【作者基本信息】 中南大学 ， 计算机应用技术， 2005， 硕士

【摘要】 移动自组网中的节点采用电池一类的可耗尽能源来提供电源,而且每个节点既是计算机又是路由器,很容易因某个节点能量耗完而导致网络分裂。本文主要是从能量入手,通过对网络中各链路状态的预测以及各节点能量的预测来找出一条最优路由。 本文首先总结了目前移动自组网中网络层的一些基于能量的路由协议,并比较分析了它们的优缺点以及未来的发展方向。接着本文提出了一种结合LET和节点生存时间预测的路由协议,将节点的运动特性和能量特性结合起来,通过预测链路保持时间LET和节点的生存时间,选择一条最优路径。并通过模拟结果说明了该协议能有效的提高数据传送率,减少链路断裂个数,改善了网络性能。最后本文还提出了一种考虑能量的基于预测的路由协议,该算法结合了节点生存时间的预测和路径稳定度的预测,首先由节点根据自身计算出的剩余生存时间来判断是否参加路由,然后在预测链路稳定性的基础上,有效的预测路径的稳定性,从而能选择一条最稳定路径进行数据传输,并同时延长了整个网络的生存时间。我们也通过模拟结果论证了该算法的有效性。更多还原

【Abstract】 Each node in Mobile Ad hoc network can be regarded as either a computer or a router and the nodes in MANET are battery-operated, so it is easy to lead to network partitioning since some node’s energy is exhausted. In this paper, we find an optimal route by predicting the status of each link and the lifetime of each node in MANET.In this paper, we first summarize the power-aware routing protocols on network layer, analyze their characteristics and the research direction in the future. Then a new routing protocol by combining the prediction of the node lifetime and LET is presented, which can find an optimal route by considering the character of dynamic topologies and energy-constrained operations and the simulation results show the new protocol can increase the packet delivery ratio and decrease the number of broken link. Finally we present a routing protocol by combining the prediction of the node lifetime and the path availability. Node decides whether to participate in the routing path according to its predicted lifetime at first, then predicts the availability of the path based on the prediction of the link availability, consequently the mechanism can choose a steadiest path to transmit data and it can prolong the network lifetime at the same time. We also prove its effect by simulation.更多还原