Low-Altitude Intelligent Network Empowered by Blockchain
Low-altitude intelligent network is an instrumental infrastructure for the outgrowth of low-altitude economy.However,the safety control of the unmanned aerial vehicles(UAVs)presented in such complex system faces multiple security challenges such as airspace security,data security,and spectrum security.To address these three issues simultaneously,a blockchain-based three-sided collaborative regulatory architecture,with the use of both"on-chain"and"off-chain"information,is proposed.The"on-chain"contains identity and registration information of UAVs,while the"off-chain"contains automatic dependent surveillance-broadcast(ADS-B)information and spectrum information.To solve the problem of cross-domain authentication,an effective signature algorithm is developed,which is based on the ADS-B information and certificateless signature.Furthermore,due to the lack of error correction mechanism in the ADS-B protocol,errors are easily incurred by channel noise and interference during the transmission of the ADS-B information.Consequently,the hash verification may fail.In order to alleviate such signature failure,a cross-layer signature algorithm based on error correction code is designed for correcting errors.The proposed blockchain-based three-sided collaborative regulatory platform has been well experimented over the Yangtze River low-altitude demonstration pilot zone and achieved great success.
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维普
