Blockchain-Empowered Dynamic Spectrum Management for Space-Air-Ground Integrated Network

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外文摘要：Space-air-ground integrated network is capable of providing seamless and ubiquitous services to cater for the increasing wireless communication demands of emerging applications.However,how to efficiently manage the heterogeneous resources and protect the pri-vacy of connected devices is a very challenging issue,es-pecially under the highly dynamic network topology and multiple trustless network operators.In this paper,we in-vestigate blockchain-empowered dynamic spectrum man-agement by reaping the advantages of blockchain and software defined network(SDN),where operators are in-centive to share their resources in a common resourced pool.We first propose a blockchain enabled spectrum management framework for space-air-ground integrated network,with inter-slice spectrum sharing and intra-slice spectrum allocation.Specifically,the inter-slice spectrum sharing is realized through a consortium blockchain formed by the upper-tier SDN controllers,and then a graph coloring based channel assignment algorithm is pro-posed to manage the intra-slice spectrum assignment.A bilateral confirmation protocol and a consensus mechan-ism are also proposed for the consortium blockchain.The simulation results prove that our proposed consensus al-gorithm takes less time than practical Byzantine fault tol-erance algorithm to reach a consensus,and the proposed channel assignment algorithm significantly improves the spectrum utilization and outperforms the baseline al-gorithm in both simulation and real-world scenarios.

外文关键词：

Space-air-ground integrated networkDynamic spectrum sharingBlockchain

作者：

LI Zuguang、WANG Wei、GUO Jia、ZHU Youwen、HAN Lu、WU Qihui

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作者单位：

College of Electronic and Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China

Key Laboratory of Dynamic Cognitive System of Electromagnetic Spectrum Space,Ministry of Industry and Information Technology,Nanjing 211106,China

基金：

National Key Research and Development Program of China国家自然科学基金江苏省自然科学基金Fundamental Research Funds for the Central UniversitiesFundamental Research Funds for the Central Universities

项目编号：

2020YFB100590062001220BK20200440YAH20016NT2020009

出版年：

2022

DOI：

10.1049/cje.2021.00.275

电子学报(英文)

CSTPCDSCIEI

ISSN：1022-4653

年,卷(期)：2022.31(3)

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