Abstract: Multi-path routing protocols in wireless mobile Ad hoc networks have drawn researchers’ attention due to its good performance.However，the protocols maintain condition of“shortest path” with minimum hops measurement.Research shows that the path with minimum hops may not provide the minimum end-to-end delay guarantee.This paper proposes a new multi-path routing protocol in consideration of end-to-end delay，i.e. QAOMDV.The protocol，based on a cross-layer design method，introduces a new metric“shortest queue”.The simulation results demonstrate that QAOMDV performs much better，in terms of end-to-end delay，packet delivery ratio and so on.

Key words: Ad hoc networks, multi-path routing, cross-layer design, delay

摘要： Ad hoc网络中多径路由算法因其表现出的较好性能受到人们越来越多的关注。但多径路由依旧采用“最小跳数”路由选择机制。很多研究显示最小跳数并不能提供最小的端到端时延保证。采用跨层设计思想，在路由选择机制中引入最短队列长度参数，提出了一种基于延迟的多路径路由算法QAOMDV。仿真结果表明QAOMDV算法可以降低端到端的传输时延，提高数据包的投递率，改善了网络性能。

关键词: Ad hoc网络, 多径路由, 跨层设计, 延迟