针对集中式动态频谱共享存在的频谱资源数据安全威胁、管理成本高、扩展性低等问题，利用区块链技术的去中心化、数据不可篡改等特性，提出了一个基于区块链智能合约的动态频谱共享方案。首先，利用区块链ERC4907协议设计了频谱券，保证频谱资源的唯一性标识并可租赁；其次，利用区块链预言机来实时更新空闲频谱资源数据，实现频谱数据的上链；再次，通过基于智能合约的拍卖算法以及Vue框架实现在前端页面对空闲频谱资源所对应的频谱券租赁期限的拍卖。实验结果表明，提出的基于区块链智能合约技术的动态频谱共享方案能够满足用户安全有效地进行动态频谱共享，具有可行性。
In this paper, a blockchain smart contract-based smart contract is proposed to address the problems of data security threats, high management costs, and low scalability in centralized dynamic spectrum sharing. First, spectrum coupons are designed using the blockchain ERC4907 protocol to ensure the unique identification and leasing of spectrum resources. Second, the blockchain oracle machine was used to update the data of idle spectrum resources in real time to realize the upload of spectrum data. Finally, an auction algorithm based on smart contracts and Vue framework is used to auction the spectrum coupon lease term corresponding to the idle spectrum resources on the front-end page. Experimental results indicate that the proposed dynamic spectrum sharing scheme based on the blockchain smart contract ensures the users’ safe and effective dynamic spectrum sharing and is feasible.
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