Block chain consensus method and system for Internet of Vehicles communication scene

Abstract

The embodiment of the invention provides a block chain consensus method and system for an Internet of Vehicles communication scene, and the method comprises the steps: carrying out the consensus of transaction information between vehicles in a vehicle region on a block chain network through a directed acyclic graph consensus algorithm, and if a consensus result meets a preset condition, carrying out the consensus of transaction information between vehicles in a vehicle region; a logic network slice corresponding to the vehicle area is obtained, and the vehicle area is obtained by dividing an Internet of Vehicles communication application scene; and constructing blocks corresponding to the roadside units according to the logic network slices, performing consensus on each block on the block chain network through a consensus algorithm, and adding the consensus blocks into the block chain network. According to the embodiment of the invention, the block is constructed by using the transaction-level DAG data structure, then the directed acyclic graph block within a certain space-time range is subjected to consensus, and the data of the high-speed dynamic topology network is quickly and synchronously updated from local to overall by using two-level consensus.

Description

technical field [0001] The present invention relates to the technical field of intelligent transportation, in particular to a block chain consensus method and system for the communication scene of the Internet of Vehicles. Background technique [0002] The blockchain applied in the Internet of Vehicles often adopts the classic Proof of Work (PoW for short) or Proof of Stake (PoS for short) consensus algorithm. The common feature of these consensus algorithms is that they are based on the The time sorting of blocks realizes the order of transactions, so that the user's transactions or accounts will not have problems such as double spending or bifurcation. Another consensus algorithm based on Directed Acyclic Graph (DAG for short) for IoT applications has also been widely used. Typical projects include IOTA, Byteball and Nano, etc. DAG-based algorithms have no blocks The basic unit of a blockchain or ledger is a single transaction or transaction. At the same time, during ver...

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Problems solved by technology

Therefore, the existing blockchain consensus algorithm can hardly meet the transaction throughput requirements in this scenario; and the consensus mechanism based on the DAG structure needs to maintain a high transaction throughput in the blockchain network to maintain a stable transaction consensus However, due to the high-speed changing dynamic topology of the Internet of Vehicles, there may be problems such as delays, unreachability, or insufficient authentication times in transaction delivery within the blockchain network

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