A Routing Protocol for Wireless SDN in Mission-Critical Unmanned Systems

Under mission-critical scenarios such as a battlefield, network packet loss can result in a fatal consequence. Therefore, flexible and robust network design is crucial in mission-critical networks. Wireless software-defined networking (SDN) is a promising technology for this purpose. However, in most studies on wireless SDN, the communication between the SDN controller and mobile nodes is restricted to one hop, which significantly limits the mobility of the wireless nodes. In this paper, we propose a routing protocol that can effectively react to disconnection in multi-hop wireless SDN scenarios. By numerical simulation, we confirm that the proposed protocol can meaningfully increase the packet delivery ratio.