A Networking Scheme for FANET Basing on SPMA Protocol

High-speed space vehicles realize interconnection, coordinated operations and precise strikes through Flying Ad hoc Network (FANET), which has the characteristics of high-speed node, highly dynamic network topology, and multiple priority tasks guarantee requirements. First, a five-layer protocol architecture networking scheme suitable for FANET is proposed, which adopts Statistical Priority-based Multiple Access (SPMA) as data link layer multiple access protocol. Then, SPMA algorithm flow is designed, and three key algorithms, namely, channel occupancy statistics algorithm, priority threshold algorithm and back off time algorithm are briefly analyzed and feasible solutions are given. Finally, simulation modeling of FANET basing on SPMA is conducted on OPNET platform. Through theoretical analysis and simulation experiments, it can be proved that SPMA protocol designed in this paper can realize multiple priority differentiated services, ensure low latency and high reliability of high-priority packets, and meet the QoS requirements of FANET. Moreover, compared to the traditional CSMA/CA protocol, the SPMA protocol has better performance in all aspects.