Caching Policy and Cooperation Distance Design for Base Station-Assisted Wireless D2D Caching Networks: Throughput and Energy Efficiency Optimization and Tradeoff
Caching Policy and Cooperation Distance Design for Base Station-Assisted Wireless D2D Caching Networks: Throughput and Energy Efficiency Optimization and Tradeoff
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DOI：
10.1109/twc.2018.2867596
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发表时间：
2018-11-01
影响因子：
10.4
通讯作者：
Molisch, Andreas E.
中科院分区：
文献类型：
--
作者：
Lee, Ming-Chun;Molisch, Andreas E.
本文从吞吐量和能量效率两个角度研究了基站辅助的无线设备到设备（D2D）缓存网络中的最优缓存策略和协作距离设计。通过联合考虑BS传输、D2D缓存和自缓存的影响以及协作距离的影响，提出了具有专门设计的功率控制和资源重用策略的聚类方法。综合分析了两种网络结构的吞吐量和效率，并分别提出了以吞吐量和效率为优化目标的设计方案。我们还描述了吞吐量和EE之间的权衡，并提供相应的设计。考虑实际参数进行仿真，以验证分析和评估所提出的设计，他们表现出上级性能与国家的最先进的。
This paper investigates the optimal caching policy and cooperation distance design from both throughput and energy efficiency (EE) perspectives in base station (BS)-assisted wireless device-to-device (D2D) caching networks. By jointly considering the effects of the BS transmission, D2D-caching, and self-caching, and the impact of the cooperation distance, a clustering approach is proposed with specifically designed power control and resource reuse policies. The throughput and EE of two network structures are comprehensively analyzed and designs aiming to optimize the throughout and EE, respectively, are proposed. We also characterize the trade-off between the throughput and EE and provide corresponding designs. Simulations considering practical parameters are conducted to verify the analyses and evaluate the proposed designs; they demonstrate superior performance compared with state-of-the art.