Abstract: In mobile ad hoc networks（MANET），node movement often makes the topology change frequently.In case not considering stability，link break will be unavoidable on the route and therefore route reconstructing is continuing.In order to improve the stability of routing，this paper prompts a new route protocol PS-AORP（Path Stability based Ad-hoc On-demand Routing Protocol）.The protocol takes the path stability element and link minimum stability entropy into account of construction.Simulations show that the PS-AORP can reduce the end-to-end delay and packets discarded.

Key words: MANET, routing protocol, path stability

摘要： 由于移动自组织网络的高动态性，使得它的拓扑结构不断发生改变。如果不考虑链路稳定性问题，将不可避免地导致可行路径上链路的经常破裂，使得两节点需要不断的重构路由。提出了基于路径稳定性的MANET路由协议PS-AORP（Path Stability based Ad-hoc On-demand Routing Protocol），协议在路由建立过程中考虑路径稳定性，通过整条链路上的稳定因子和最小稳定熵值来确定链路稳定性。实验仿真结果表明PS-AORP对网络端到端传输时延、丢包率等网络性能都有较大的提高。

关键词: 移动自组织网络, 路由协议, 路径稳定性