Abstract
In this paper, we demonstrate the design process and results for a low-latency, lightweight blockchain platform that is suitable for the exchange of information between drones flying in a swarm. This blockchain platform can provide high security for these drones, with the exchange of information, such as the position or the speed of the individual drones, occurring via blockchain transactions. Therefore, the latency of these transactions is an important determinant of the validity of the information. Hence, we propose a high-speed blockchain platform with low latency that utilizes the open-source blockchain Ethereum, which is employed in various fields. Ethereum’s existing consensus algorithm requires complicated hash operations that may be difficult for drones to process. In addition, its block generation period, which is limited to a minimum of 1 second, has an adverse effect on transaction latency. We address these two issues by analyzing and modifying the Ethereum source code and confirm the improved performance through experiments with a smart contract.
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