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.