A mobile ad hoc network (MANET) is a set of mobile and self-organizing nodes that cooperate to create dynamic network architecture to establish communications. Its characteristics present critical challenges: limited residual energy of nodes and transmission range, wireless links sensitivity to environmental effects, and the mobility aspect, which leads to frequent link failure and rapid changes in the network topology. In this paper, we propose a new multipath routing protocol RMQS-ua (Reliable Multipath Routing Protocol based on Link Quality and Stability in Urban Areas). Our objective is to select the path that has better link quality and more stable links to guarantee reliable data transmission. We consider a combination of signal to noise ratio SNR and an enhanced packet reception ratio PRR to evaluate link quality, and the exponential moving average (EMA) to estimate the link stability. RMQS-ua is designed for an urban area that includes shadowing effect and background noise which deteriorates the link quality. Simulation results show that RMQS-ua improves network performance, and provides more reliability compared to some recent existing protocols.

移动自组织网络 (MANET) 是一组移动和自组织节点，它们合作创建动态网络架构以建立通信。其特点提出了关键挑战：节点和传输范围的剩余能量有限，无线链路对环境影响敏感，以及移动性方面，这导致频繁的链路故障和网络拓扑的快速变化。在本文中，我们提出了一种新的多路径路由协议RMQS-ua（基于城市区域链路质量和稳定性的可靠多路径路由协议）。我们的目标是选择链路质量更好、链路更稳定的路径来保证数据的可靠传输。我们考虑结合信噪比 SNR 和增强的数据包接收率 PRR 来评估链路质量，和指数移动平均线 (EMA) 来估计链接稳定性。RMQS-ua 是为市区设计的，包括阴影效应和背景噪声，这会降低链路质量。仿真结果表明，RMQS-ua 提高了网络性能，与一些最近的现有协议相比提供了更高的可靠性。