Location Aided Multi-Constrained Ant Colony QoS Routing Algorithm for Tactical MANETs

To improve the stability and efficiency of routes, and satisfy the QoS requirements simultaneously, a novel multiple constrained ACO based QoS routing algorithm suitable for tactical MANETs (MC-AQRA) is proposed. MC-AQRA uses location information to estimate the link´s lifetime, and integrates link lifetime and node congestion into conventional QoS requirements such as bandwidth and delay, therefore the routes established by MC-AQRA not only satisfy the conventional QoS requirements, but also have the highest stability and the least congestion. Simulation results show that MC-AQRA outperforms AODV and AntHocNet in terms of end-to-end delay, packet delivery ratio and routing overhead.