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In unmanned aerial vehicle (UAV) networks, high-capacity data transmission isof utmost importance for applications such as intelligent transportation, smartcities, and forest monitoring, which rely on the mobility of UAVs to collectand transmit large amount of data, including video and image data. Due to theshort flight time of UAVs, the network capacity will be reduced when theyreturn to the ground unit for charging. Hence, we suggest that UAVs can apply astore-carry-and-forward (SCF) transmission mode to carry packets on their wayback to the ground unit for improving network throughput. In this paper, wepropose a novel protocol, named UAV delay-tolerant multiple access control(UD-MAC), which can support different transmission modes in UAV networks. Weset a higher priority for SCF transmission and analyze the probability of beingin SCF mode to derive network throughput. The simulation results show that thenetwork throughput of UD-MAC is improved by 57% to 83% compared to VeMAC.

UD-MAC: Delay Tolerant Multiple Access Control Protocol for Unmanned Aerial Vehicle Networks