Simulation and Experimental Study of Multi-source Application Layer ARQ for FANET

Abstract

AbstractThis paper discusses a FANET consisting of several source nodes and one destination node in the form of a ground station. As data for transmission, a video stream was considered, which was broadcasted in real time simultaneously by several source nodes. Simulation of the multi-stream data transmission process was carried out in NS-3 environment. Several variations of multi-stream transmission modeling were considered, in the first of which the Application class was used to create several source nodes, in the second the Poisson Pareto Burst Process (PPBP) traffic generator was used. Based on the simulation results, it was concluded that an increase in the number of flying source nodes negatively affects QoS: the requirement for Goodput increases, the destination node buffer is overloaded and video data packets are dropped, and PDR decreases. To solve the above problem, the Multi-Source Application Layer ARQ (MS-AL-ARQ) method is proposed, the main principle of which is to repeat the lost data chunks at the application level. This paper describes the principle of operation of MS-AL-ARQ for working with separate input buffers and a common input buffer at the destination node. Both variations of the MS-AL-ARQ operation are implemented in software, the effectiveness of their application was experimentally proven.KeywordsFANETMulti-sourceMS-AL-ARQBufferPDRGoodputPPBP