Intelligent Consensus Enhanced Spectrum Sharing in Heterogeneous Wireless Networks

【Author】 Zhang, Hanwen; Leng, Supeng; Yin, Hongbo; Yu, Shui

【Source】IEEE INTERNET OF THINGS JOURNAL

【影响因子】10.238

【Abstract】The coexistence of sixth-generation (6G) and other wireless networks in the large-scale environment is challenged by the problem of the efficient sharing of the unlicensed spectrum band, as well as the fair and reliable access of heterogeneous users. Blockchain with the advantages of trustworthiness and decentralization is supposed to be a potential solution. An intelligent two-layer blockchain framework is developed, consisting of an upper layer administrator blockchain (UAB) and multiple lower layer spectrum allocation blockchains (LSB). The LSB is an adjustable local blockchain to form a fast and lightweight consensus on spectrum allocation, and the UAB controls the adaptation for regional dynamic Quality-of-Service requirements. Moreover, the theoretical model is proposed to analyze the effect of different communication delays of wireless blockchain networks on the block confirmation delay of the directed acyclic graph (DAG) blockchain. Considering the wireless blockchain node must compete for scarce spectrum resources to broadcast transactions, we analyze the optimal spectrum allocation ratio for an LSB through mathematical modeling. Furthermore, the deep Q network (DQN) is used by UAB to form a consensus on the adjustment strategy for the blockchain model of LSB. Test results demonstrate that the proposed intelligent blockchain model can significantly improve spectrum efficiency and adapt to the dynamic environment.

【Keywords】Blockchains; Delays; Quality of service; Wireless fidelity; Heterogeneous networks; Resource management; Consensus protocol; Blockchain; spectrum sharing; unlicensed spectrum

【发表时间】2024 OCT 1

【收录时间】2024-10-15

【文献类型】案例研究

【主题类别】

区块链技术-核心技术-共识机制