基于综合度量的Ad Hoc网络跨层路由协议

Ad Hoc网络路由协议普遍采用最短路径准则，无法有效支持多速率传输并容易导致网络局部拥塞。针对该问题，利用协议栈跨层设计的思想，提出一种基于综合度量的路由协议SMRP。该协议综合考虑链路速率值、MAC竞争度和网络队列长度多种因素选择路径，能有效利用多速率传输能力，避开拥塞节点。仿真实验结果证明，该协议能从网络吞吐量、分组时延等方面有效提高网络性能。

Cross-layer Routing Protocol for Ad Hoc Networks Based on Synthetical Metric

Traditional Ad Hoc network routing protocols are mainly based on the condition called shortest path, it can not support multi-rate mechanism well and usually lead to local congestion. This paper proposes a Synthetical Metric Routing Protocol(SMRP) with cross-layer design. It takes rate on physical layer, competition on MAC layer and queue length on network layer into account. This method can utilize multi-rate support better and avoid local congestion. Simulation results show that SMRP performs better than traditional routing protocols including network throughput and delay.