介紹了自組網和路由協議，對AODV路由協議中的斷鏈問題進行了分析和仿真，提出了對其進行優化的方案并給出具體實現。優化方案使用了本地的反向路由重建方法，通過廣播一個鏈路修復消息同時完成了路由查找和路由建立的任務。與傳統的路由重建方式相比，可以節省在重建路由時引入的時延，并在一定程度上減少了路由重建的額外開銷，以更好地適應自組網的應用環境。
關 鍵 詞 自組網; 路由協議; 本地修復; 仿真

Abstract Because of the flexibility and convenience it can provide us, the mobile ad-hoc network becomes a very hot research topic presently. There are many related articles presented on various journals in this area, especially concentrated on the ad-hoc routing protocols. But, the solutions provided still have more or less defects. Firstly this article introduces the special characters of ad-hoc network and the existing routing protocols. Then analysis and simulation of the link break of ad-hoc on-demand distance vector in ad hoc networks are presented and a new mechanism to improve the performance of link repair is provided. The simulation results indicate that the improved method results in less delay and routing overhead while reconstructing route compared to the traditional method to some extent.
Key words ad-hoc network; routing protocol; local repair; simulation