A new routing protocol for UAV relayed tactical mobile ad hoc networks

Due to high dynamics of nodes, network partitioning happens frequently in tactical ad hoc networks. To avoid this problem, relay node is one of possible solutions by connecting the partitioned networks and providing alternative backup path temporarily. Even though a vehicle and personal solider may work as relay node, unmanned aerial vehicle (UAV) is the most appropriate in the point of coverage and rapid action. However, there are some important research challenges to deploy UAV relay node such as load balancing and congestion on UAV. Thus, in the paper, we present a new routing protocol to implement UVA relay function in tactical ad hoc networks. The path via UAV relay node is controlled according to type of communications, service, and source and destination pair. The simulation results are given to prove the higher packet deliver ratio and shorter end-to-end delay through the proposed scheme than typical geographical routing protocol in tactical ad hoc networks.