Abstract: In order to implement Networked Control System（NCS） with Mobile Ad hoc Network（MANET），considering network features of NCS，a QoS routing protocol based on Received Signal Strength Indication（RSSI） is proposed.Main QoS schemes include choosing steady route according to RSSI，broadcasting reserved bandwidth with Hello message，intermediate nodes repairing the broken route for all influenced sources，destination broadcasting route repairing message to the source.Simulation shows this QoS routing protocol can reduce average end-to-end delay and packet loss rate effectively，when the network is in strong mobility and heavy traffic load.It’s helpful to improve the stability of NCS.

Key words: mobile Ad hoc networked control systems, quality of service routing, Ad hoc On-Demand Distance Vector routing（AODV）, Received Signal Strength Indication（RSSI）

摘要： 为更好地将移动自组网络用于网络控制系统（NCS），结合NCS的网络特性，提出了一种基于链路信号质量的QoS路由算法。主要QoS机制包括根据接收信号强度选择较稳定的路由;用Hello报文广播节点的预留带宽;中间节点为所有受影响的数据流修复路由、目的节点向源节点广播路由修复报文进行路由修复。NS2仿真表明当节点移动性强时，该QoS路由算法可有效减少网络的平均端到端时延和丢包率，提高控制系统稳定性。

关键词: 移动自组网络控制系统, QoS路由, 无线自组网按需平面距离矢量路由协议（AODV）, 接收信号强度指示