一种AODV跨层优化方法及仿真测试分析

针对Ad Hoc网络中传统AODV协议不支持QoS的缺陷,提出了一种多约束QoS AODV跨层优化方法MQ-AODV（Multi-Constrained QoS AODV）。该方法采用跨层设计的思想,除以传统AODV协议的转发跳数作为路由选择判据之外,而且加入应用层的QoS需求信息和MAC层的多种QoS指标作为路由选择判据,并通过改进AODV路由表结构和路由查找算法,提高AODV路由协议性能。仿真测试结果表明MQ-AODV协议缩短了传输时延,增强了路由协议的适应性和鲁棒性。

Optimization and Simulation Test of a Cross-layer Design Based on AODV Routing Algorithm

Since the traditional AODV protocol in Ad hoc network does not support the quality of service,a Multi-constrained QoS AODV(MQ-AODV) optimization mechanism is proposed.Thinking of the cross-layer information,not only the route hop count is considered as a routing metric,but also adding application layer’s QoS requirements and MAC layer’s QoS parameters as routing criteria,and in order to optimize improving the routing performance,AODV routing table and routing mechanism is improved.Simulation results show that the MQ-AODV protocol reduced transmission delay,enhanced routing flexibility and robustness.