电信科学 ›› 2019, Vol. 35 ›› Issue (12): 49-56.doi: 10.11959/j.issn.1000-0801.2019270

• 研究与开发 • 上一篇    下一篇

无线供能网络中数据收集的能量效率最大化方案

葛海江1,2,俞湛威1,池凯凯1   

  1. 1 浙江工业大学计算机科学与技术学院,浙江 杭州 310023
    2 杭州职业技术学院信息工程学院,浙江 杭州 310018
  • 修回日期:2019-06-14 出版日期:2019-12-20 发布日期:2020-01-15
  • 作者简介:葛海江(1980- ),男,浙江工业大学计算机科学与技术学院博士生,杭州职业技术学院信息工程学院副教授,主要研究方向为无线供电通信网络|俞湛威(1993- ),男,浙江工业大学计算机科学与技术学院硕士生,主要研究方向为无线供能网络|池凯凯(1980- ),男,博士,浙江工业大学计算机科学与技术学院教授、博士生导师,主要研究方向为物联网
  • 基金资助:
    国家自然科学基金资助项目(61872322);浙江省基础公益研究计划资助项目(LGG18F020005);浙江省高等教育十三五第二批教学改革研究项目(基于“1+X”书证融通的高职电子信息类人才培养模式研究)

Energy-efficiency maximization scheme for data collection in wireless power communication networks

Haijiang GE1,2,Zhanwei YU1,Kaikai CHI1   

  1. 1 School of Computer Science and Technology,Zhejiang University of Technology,Hangzhou 310023,China
    2 Institute of Information Engineering,Hangzhou Vocational &Technical College,Hangzhou 310018,China
  • Revised:2019-06-14 Online:2019-12-20 Published:2020-01-15
  • Supported by:
    The National Natural Science Foundation of China(61872322);The Basic Public Welfare Research Project of Zhejiang Province of China(LGG18F020005);The Second Batch of Research Projects on Teaching Reform in the 13th five-year Plan of Higher Education in Zhejiang Province (Research on the Training Mode of Electronic Information Types in Higher Vocational Colleges Based on "1+X" Certificates)

摘要:

研究提出由多个射频能量源和汇聚节点组成的无线供能网络,通过联合最优化能量源的发送功率、能量发送时长和节点的数据发送时间,最大化数据收集的能量效率。首先对能量效率最大化问题进行建模。接着,分析得到发送功率的最优取值,并进一步推导出能量效率函数的单调性和吞吐量函数的凹凸性。最后,基于这些属性设计出联合使用黄金分割法和二分法的高效最优算法的快速得到最优解。仿真结果表明,相比于基准方法,所提出的最优算法能显著提高能量效率。

关键词: 无线供能网络, 时间分配, 能量效率, 黄金分割法, 二分法

Abstract:

WPCN composed of multiple RF energy sources and sinks was studied.The energy efficiency of data collection were maximized by jointly optimizing the transmission power of energy sources,the time allocation of wireless energy transfer and the time allocation of nodes’ data transmission.Specifically,the energy efficiency maximization problem was modeled firstly.Then,the optimal value of transmitted power was obtained,and the monotonicity of energy-efficiency function and the convexity of throughput function were further deduced.Finally,based on these properties,an efficient algorithm which combines golden-section search and bisection search was designed to get the optimal solution quickly.The simulation results show that the proposed optimal algorithm can significantly improve the energy efficiency compared with the baseline scheme.

Key words: wireless powered communication networks, time allocation, energy efficiency, golden section search, bisection search

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