Abstract
Flying Ad Hoc Network (FANET), a self-configuring network consisting of Unmanned Aerial Vehicles (UAVs), can undertake different kinds of civilian and military tasks. As a particular instance of FANETs, intermittently connected FANETs (IC-FANETs) are characterized by a highly dynamic network topology and intermittent connectivity. Existing routing algorithms have been proposed for FANETs given that the underlying network is well connected, which are not suitable for such network environments. In this paper, we present a geographic routing algorithm called mobility-assisted adaptive routing (MAAR) targeting IC-FANETs. Different from conventional geographic routing protocols exploiting other location services to obtain the location information, MAAR combines routing strategy with location service in order to reduce the packet latency and routing overhead. MAAR updates the information of neighbour nodes dynamically according to nodal mobility and introduces a new metric called IDM to update the positions of other nodes in the network adaptively. In addition, we use a store-carry-and-forward paradigm to handle the technical issues of networks suffering from communication interruptions. When the forwarder node does not have any solution to find an appropriate relay node, mobility is exploited. Simulation results demonstrate that the MAAR scheme performs remarkably in terms of packet delivery ratio, throughput and routing overhead.
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