Research On The Flight Ad Hoc Network Mechanism Supporting Ground Access

An unmanned aerial vehicle(UAV)is a reusable aerial vehicle with no human operators on board.With the increase of focus on various drone technologies and complex communication requirements for multi-drone systems,the concept of ad hoc networks is proposed.The basic idea of the flight ad hoc network(FANET)is to establish a distributed communication network automatically,and the UAV nodes can communicate with each other and exchange data.Also,it does not rely on basic communication facilities such as ground base stations and satellites.With the development of the application of FANET in the military and civilian fields,the research of FANET in the communication field has gradually become a research hotspot.With the communication technology of the ad hoc network,the flight ad hoc network supporting ground access has also become a research hotspot.The research on the flight ad hoc network supporting ground access is combined with mobile ad hoc networks(MANET),especially focus on the initial state setting mechanism,information distribution mechanism,and power control mechanism.The research contents and innovations are the following.Firstly,the similarities and differences between FANET and MANET are discussed.And the network construction suitable for the flight ad hoc network supporting ground access is established.Also,a distributed access selection algorithm is proposed which can complete the access selection process of ground users through information broadcast.The initial state setting process is established with the ground user access selection process.Secondly,during the initial state setting of the FANET,an information broadcast mechanism supporting multi-hop neighbor nodes between UAVs and ground users,a distributed initial state setting mechanism,and a hierarchical power control mechanism were proposed.Moreover,a simulation platform is set up,which verifies the adaptability of the above-mentioned mechanism and performed the approaches to the centralized algorithm as well.Thirdly,two optimization algorithms of the mechanism of the flight ad hoc network supporting ground access are proposed.Firstly,an improved game theory algorithm for the initial state setting is proposed and the performance is further improved.Secondly,the ground user communication probability is concerned as a factor for power control,and a weight-based power control algorithm is proposed.Through simulation verification,it reduced the energy loss to increase the lifetime of the FANET.