Performance of TCP Congestion Control in UAV Networks of Various Radio Propagation Models

摘要

Unmanned aerial vehicles (UAVs) have recently become popular for both recreational and commercial useand UAV networks have thus started to attract the attention of researchers in area of the computercommunication and networking. One important topic in UAV networks is congestion control becausecongestion causes packet losses and delays which result in the waste of all types of network resources suchas bandwidth and power. Although there are studies on the performance of TCP congestion control inwireless networks, they focus on terrestrial networks of two dimensions in general. In this paper we studythe performance of TCP congestion control in three dimensional UAV networks. In particular, weinvestigate how TCP congestion control performs in such type of network using various radio propagationmodels. Our data on the average flow throughput, packet delay, and packet loss rate in UAV networksshow that TCP congestion control improves the network performance of UAV networks in general, but itfaces challenges when the link losses become severe. Our study thus shows that investigation on newcongestion control schemes is stilled needed for the emerging UAV networks.