Blockchain-based Resource Sharing And Trading Mechanism For Computing Power Network

With the vigorous development of the digital economy and the launch of the project of channel computing resources from the east to the west,computing power has become a new type of productivity.Industries like the Industrial Internet,the Internet of vehicles,smart city,smart medical,and other new technologies generate massive data and bring huge demand for computing resources.The development and implementation of edge computing and cloud computing provides more computing infrastructure.However,simply and passively expanding the capacity of computing power nodes will bring the problem of inefficient utilization of resources.In this context,the Computing Power Network is proposed to integrate and manage ubiquitous heterogeneous computing power at the cloud,edge,and terminal through network connectivity to achieve the optimal use of the whole network resources.By allocating computing,cache,communication and intelligent resources to users in need through the network,resource trading is formed in business scenarios.CPN(Computing Power Network)ensures that users can collaboratively schedule various types of resources to obtain an efficient,flexible,and consistent service experience.The current research on multi-dimensional resource sharing and trading in CPN is not complete,and resource trading solutions in other scenarios such as wireless communication and cloud computing cannot be directly migrated for application.Considering the characteristics of ubiquitous and heterogeneous resource distribution and the attribution to different owners in CPN,the platform construction and mechanism design should accordingly meet the properties of distributed,secure and trustworthy.Therefore,this paper conducts a study on the resource sharing and trading mechanism in CPN architecture and carries out the following work:(1)Considering the multi-level deployment of resources in CPN,the architecture of the resource trading platform was designed based on blockchain technology.Combining NFT and IPFS,a unified resource abstraction representation model and the main functions of smart contracts were proposed for efficient storage and resolution of resource information.This architecture ensures the security,credibility and traceability of information sharing and transactions caching.(2)For the multi-dimensional resource matching and pricing problem,we designed a distributed and trustworthy transaction process and algorithm based on the auction mechanism.Then,we formulated a unified pricing model for multi-dimensional resource transaction.Simulation verifies that the mechanism satisfies the characteristics of individual rationality and authenticity.(3)For the problem of collaborative sharing among multiple resource providers to improve resource utilization,we utilized the coalition formation game algorithm.The coalition utility was calculated by a resource request prediction model.The design of a fair and equitable utility allocation model was based on Shapley Value so as to realize many-tomany resource sharing and trading.This coalition game-based mechanism improves the revenue of resource providers,ensures the fairness of trading,and enhances resource utilization.Simulation results verify the above performance.