适应节点密度变化的新型自组网路由协议

本文分析了TORA 路由协议的性能随节点密度变化的情况。针对该问题，在TORA 协议的基础上引入负载均衡的思想和多速率机制，修改了协议的相关部分，优化了路由选择策略，提出了一种改进型路由协议TORA-A，并利用Opnet 网络仿真软件进行了仿真实验。TORA-A 使路由协议性能在网络节点密度较大情况下的恶化趋势得到了较好的抑制，使无线自组网对节点密度变化的适应能力得到了进一步的提高。
关键词 无线自组织网络；节点密度；路由协议；改进；OPNET
Abstract This article gives a expatiation of the effect of nodes-density-variety on TORA. With a confirmed orientation of amelioration, this article modified the TORA routing protocol with an improved tactic of balanced load and multi-rate aware routing algorithm. Then it gives a new routing protocol named TORA-A and simulated it in OPNET. The result shows that the capacity of Ad hoc network is obviously improved and the TORA-A routing protocol provides a better adaptability of nodes-density-variety.
Keywords wireless ad hoc network; nodes density; routing protocol; ameliorate; OPNET