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Background and Objective: This research studies the problem of searching the shortest path with a multi-objective (energy, bandwidth, queue, delay) routing protocol. Most of the routing protocols in MANETs which developed to solve this problem are implementing the single-interface and single-channel environment this leads the QoS degradation issues. These issues can be solved by using multi-channel multi-interface (MCMI). Materials and Methods: This new finding considers a wireless ad hoc network composed of nodes equipped with multiple network interfaces to each of which a different wireless channel can be assigned. By embedding information about channel usage in control messages of AODV, each node obtains a view of topology information of the whole network. Based on the obtained information, a source node uses mathematical models (genetic algorithm or dynamic algorithm) to determine a logical path with the maximum available energy and minimum queue to satisfy QoS requirements. Results: Simulation results conducted in network simulator (NS-2) show that our approaches give a good performance than the others. Conclusion: The results indicate that these algorithms improve significantly the Quality of Services and can be used in different environments.

Improving the QoS for ad hoc Networks Using and Comparing Genetic and Dynamic Programming