Optimization based QoS aware routing algorithm in MANET

Due to dynamic nature of MANET, the Quality of Service (QoS) based Routing is a difficult but essential task to achieve. With larger network size, this problem becomes NP-hard. Therefore, the meta heuristics are best suitable for solving this type of problems. Efforts have been made by incorporating the existing On-demand AODV routing Protocol with meta-heuristics based approaches in the direction of improving QoS routing, but could not focus on the impacts of scalability and mobility jointly. Thus, a novel Swarm intelligence algorithm inspired by the hunting behavior of the Seals has been proposed in this paper. The algorithm computes the optimal path on the basis of multiple metrics such as residual energy, hop count and routing load and overcomes the limitations of the existing algorithms. Simulation results show that the proposed SEAL-AODV algorithm improves the conventional AODV routing protocol based on the QoS metrics such as networks throughput and end-to-end delay as compared to existing meta-heuristics based routing algorithm.