Secure Transmission Scheme for Blocks in Blockchain-Based Unmanned Aerial Vehicle Communication Systems  

作　　者：Ting Chen Shuna Jiang Xin Fan Jianchuan Xia Xiujuan Zhang Chuanwen Luo Yi Hong 

机构地区：[1]School of Computer Science and Engineering,University of Electronic Science and Technology of China,Chengdu,611731,China [2]School of Computer Science,Qufu Normal University,Rizhao,276826,China [3]School of Information Science and Technology,Beijing Forestry University,Beijing,100083,China

出　　处：《Computers, Materials & Continua》2024年第11期2195-2217,共23页计算机、材料和连续体（英文）

基　　金：supported in part by the National Key R&D Program of China under Grant 2022YFB3104503;in part by the China Postdoctoral Science Foundation under Grant 2024M750199;in part by the National Natural Science Foundation of China under Grants 62202054,62002022 and 62472251;in part by the Fundamental Research Funds for the Central Universities under Grant BLX202360.

摘　　要：In blockchain-based unmanned aerial vehicle(UAV)communication systems,the length of a block affects the performance of the blockchain.The transmission performance of blocks in the form of finite character segments is also affected by the block length.Therefore,it is crucial to balance the transmission performance and blockchain performance of blockchain communication systems,especially in wireless environments involving UAVs.This paper investigates a secure transmission scheme for blocks in blockchain-based UAV communication systems to prevent the information contained in blocks from being completely eavesdropped during transmission.In our scheme,using a friendly jamming UAV to emit jamming signals diminishes the quality of the eavesdropping channel,thus enhancing the communication security performance of the source UAV.Under the constraints of maneuverability and transmission power of the UAV,the joint design of UAV trajectories,transmission power,and block length are proposed to maximize the average minimum secrecy rate(AMSR).Since the optimization problem is non-convex and difficult to solve directly,we first decompose the optimization problem into subproblems of trajectory optimization,transmission power optimization,and block length optimization.Then,based on firstorder approximation techniques,these subproblems are reformulated as convex optimization problems.Finally,we utilize an alternating iteration algorithm based on the successive convex approximation(SCA)technique to solve these subproblems iteratively.The simulation results demonstrate that our proposed scheme can achieve secure transmission for blocks while maintaining the performance of the blockchain.

关 键 词：Unmanned aerial vehicles blockchain finite blocklength block transmission alternating optimization 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]