文章摘要
Zhang Zheng(张正)*,Yang Ruizhe*,Yu Fei Richard**,Zhang Yanhua*,Li Meng*.[J].高技术通讯(英文),2021,27(2):129~138
Optimizing MDS-coded cache-enable wireless network: a blockchain-based cooperative deep reinforcement learning approach
  
DOI:10.3772/j.issn.1006-6748.2021.02.003
中文关键词: 
英文关键词: caching technology, blockchain, deep reinforcement learning (DRL)
基金项目:
Author NameAffiliation
Zhang Zheng(张正)* (*Faculty of Information Technology, Beijing University of Technology, Beijing 100124, P.R.China) (**Department of Systems and Computer Engineering, Carleton University, Ottawa K1S5B6, Canada) 
Yang Ruizhe* (*Faculty of Information Technology, Beijing University of Technology, Beijing 100124, P.R.China) (**Department of Systems and Computer Engineering, Carleton University, Ottawa K1S5B6, Canada) 
Yu Fei Richard** (*Faculty of Information Technology, Beijing University of Technology, Beijing 100124, P.R.China) (**Department of Systems and Computer Engineering, Carleton University, Ottawa K1S5B6, Canada) 
Zhang Yanhua* (*Faculty of Information Technology, Beijing University of Technology, Beijing 100124, P.R.China) (**Department of Systems and Computer Engineering, Carleton University, Ottawa K1S5B6, Canada) 
Li Meng* (*Faculty of Information Technology, Beijing University of Technology, Beijing 100124, P.R.China) (**Department of Systems and Computer Engineering, Carleton University, Ottawa K1S5B6, Canada) 
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中文摘要:
      
英文摘要:
      Mobile distributed caching (MDC) as an emerging technology has drawn attentions for its ability to shorten the distance between users and data in the wireless network. However, the DC network state in the existing work is always assumed to be either static or real-time updated. To be more realistic, a periodically updated wireless network using maximum distance separable (MDS)-coded DC is studied, in each period of which the devices may arrive and leave. For the efficient optimization of the system with large scale, this work proposes a blockchain-based cooperative deep reinforcement learning (DRL) approach, which enhances the efficiency of learning by cooperating and guarantees the security in cooperation by the practical Byzantine fault tolerance (PBFT)-based blockchain mechanism. Numerical results are presented, and it illustrates that the proposed scheme can dramatically reduce the total file download delay in DC network under the guarantee of security and efficiency.
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