Collaborative caching method based on lightweight block chain in Internet of Vehicles environment

Abstract

The invention discloses a collaborative caching method based on a lightweight block chain in an Internet of Vehicles environment, and belongs to the field of Internet of Vehicles. The lightweight block chain architecture is applied to an Internet of Vehicles environment, and the underlying vehicle layer undertakes a lightweight node role, reports driving data to the intermediate layer, requests Internet of Vehicles data from the intermediate layer and verifies the data; the middle roadside node layer is responsible for a full-node role, storing blockchain data, providing request data service for bottom-layer vehicles, reporting Internet of Vehicles data to the cloud server, and cooperatively caching the blockchain data by using multiple roadside nodes; and the top cloud service layer undertakes a full-node role, stores blockchain data, provides services for the intermediate roadside node layer, and participates in the cooperative cache initialization process of the intermediate roadside node layer. According to the method, the data security problem is solved, a light data verification mode is provided, maximum utilization of storage resources of the roadside nodes is achieved through cooperative caching among the multiple roadside nodes, and the delay of communication between the roadside nodes and vehicles is reduced.

Description

Technical field [0001] The present invention relates to the technical field of the Internet of Vehicles, in particular to a lightweight blockchain construction scheme based on the Internet of Vehicles environment and a method for collaborative caching between roadside nodes. Background technique [0002] With the development of the Internet of Vehicles technology, the number of nodes in the Internet of Vehicles is increasing, and the data that needs to be processed in the Internet of Vehicles network is also increasing. At the same time, as the traffic load in the network increases, the traditional centralized data processing structure (such as the server-client model) is also facing huge challenges. Faced with more and more vehicle requests, the storage and computing performance requirements of roadside nodes in the Internet of Vehicles are also getting higher and higher. In the traditional car networking model, the performance of the roadside node in a certain road section is ...

AI Technical Summary

Problems solved by technology

However, in this architecture, the computing performance and storage performance of vehicle nodes are relatively high, and there are many data types and blockchain network types. It fails to take into account the limited storage capacity and query resources of roadside nodes. And did not optimize the vehicle's request delay

[Li J, Liu Z, Chen L, et al.[IEEE 2017IEEEInternational Symposium on Parallel and Distributed Processing with Applications and 2017IEEE International Conference on Ubiquitous Computing and Communications(ISPA / IUCC)-Guangzhou, China(2017.12.12-2017.12.15)] A Blockchain-based The distributed cloud service security architecture, in which the genetic algorithm is used to place file block copies between multiple users and multiple data centers, which improves the response performance of the P2P network and optimizes the transmission time of distributed cloud service architecture services , but failed to optimize the behavior of the node during operation

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