计算机科学
频谱管理
干扰(通信)
分布式计算
排队论
计算机网络
块链
可扩展性
吞吐量
电信
认知无线电
计算机安全
无线
数据库
频道(广播)
作者
Zhiyang Cheng,Yifei Liang,Youping Zhao,Shuo Wang,Chen Sun
出处
期刊:IEEE Transactions on Cognitive Communications and Networking
[Institute of Electrical and Electronics Engineers]
日期:2023-04-01
卷期号:9 (2): 266-280
被引量:5
标识
DOI:10.1109/tccn.2023.3235789
摘要
To overcome the spectrum scarcity issues, the citizens broadband radio service (CBRS) presents a centralized spectrum management solution. The efficiency of spectrum utilization could be further improved by introducing spectrum trading. Blockchain-based spectrum trading has been considered as a decentralized, flexible, and secure approach. However, current studies rarely investigate the interference to incumbent users caused by spectrum trading between CBRS devices (CBSDs), and the scalability issues in blockchain-based spectrum trading are rarely discussed. To address the problems above, this paper develops the blockchain-based spectrum trading mechanisms for CBRS. Particularly, we propose a queuing mechanism for intra-coexistence group (CxG) trading, in which spectrum trading is leveraged to reduce the aggregated interference to incumbents. A new parameter termed “network feature” is proposed to prioritize spectrum transactions in different queues, which helps to achieve the trade-off between the interference to incumbents and resource requirements in spectrum transactions. Furthermore, we propose a multi-blockchain architecture and a corresponding cross-chain mechanism to improve the speed of inter-CxG spectrum trading. Simulation results show that the aggregated interference to incumbents can be reduced by adopting the proposed method. Meanwhile, when adopting the proposed cross-chain spectrum trading mechanism, the network throughput can be improved by up to 24% compared with the traditional CBRS spectrum management framework.
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