通信学报 ›› 2021, Vol. 42 ›› Issue (7): 162-175.doi: 10.11959/j.issn.1000-436x.2021141

• 学术论文 • 上一篇    下一篇

基于谱聚类的异构蜂窝超密集网络高能效资源分配算法

王雪1, 刘京1, 孙佳妮1, 张继真2, 钱志鸿1   

  1. 1 吉林大学通信工程学院,吉林 长春 130012
    2 中国科学院长春光学精密机械与物理研究所,吉林 长春 130033
  • 修回日期:2021-06-15 出版日期:2021-07-25 发布日期:2021-07-01
  • 作者简介:王雪(1984− ),女,吉林白山人,博士,吉林大学副教授,主要研究方向为物联网、D2D技术与异构无线网络等
    刘京(1996− ),男,河南郑州人,吉林大学硕士生,主要研究方向为异构蜂窝超密集网络通信
    孙佳妮(1996− ),女,吉林长春人,吉林大学硕士生,主要研究方向为异构无线网络
    张继真(1984− ),男,山西太原人,博士,中国科学院长春光学精密机械与物理研究所副研究员、硕士生导师,主要研究方向为金属基光学技术、光机结构设计
    钱志鸿(1957− ),男,吉林长春人,博士,吉林大学教授、博士生导师,主要研究方向为物联网、D2D、Wi-Fi、RFID等无线网络与通信技术
  • 基金资助:
    国家自然科学基金资助项目(61771219);吉林省科技发展计划基金资助项目项目(20190303137SF);吉林省科技发展计划基金资助项目项目(20200401084GX);吉林省科技发展计划基金资助项目项目(20190201187JC)

Spectral clustering-based energy-efficient resource allocation algorithm in heterogeneous cellular ultra-dense network

Xue WANG1, Jing LIU1, Jiani SUN1, Jizhen ZHANG2, Zhihong QIAN1   

  1. 1 College of Communication Engineering, Jilin University, Changchun 130012, China
    2 Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
  • Revised:2021-06-15 Online:2021-07-25 Published:2021-07-01
  • Supported by:
    The National Natural Science Foundation of China(61771219);Science and Technology Development Plan Project of Jilin Province(20190303137SF);Science and Technology Development Plan Project of Jilin Province(20200401084GX);Science and Technology Development Plan Project of Jilin Province(20190201187JC)

摘要:

为了解决5G移动通信超密集场景下功耗较大、频谱紧张、能效不高等问题,针对两层异构蜂窝非正交多址接入网络,提出了一种基于能效最大的资源分配算法。在超密集场景下行通信链路中,通过分步求解频率资源分配和功率分配方案将NP-hard优化问题转化为确定性的约束寻优问题,提出了基于谱聚类用户分组算法和改进的k-means基站聚类分簇算法,得到不同用户组的频率资源分配方案。基于Dinkelbach方法将能效优化的分式问题转化为可求解的连续凸优化问题,并通过拉格朗日乘子迭代算法实现功率分配。从基站分簇、用户分组、资源块分配与功率分配方面共同优化系统能效,最大限度地削弱基站簇间干扰与簇内干扰。仿真结果表明,所提算法在能效和计算效率相较对比算法均有明显优化。

关键词: 异构网络, 资源分配, 功率分配, 能量效率

Abstract:

In order to solve problems of high power consumption, spectrum shortage and low energy efficiency in the ultra-intensive 5G mobile communication scenario, a resource allocation algorithm based on the maximum energy efficiency for the two-layer heterogeneous cellular non-orthogonal multiple access network was proposed.The original NP-hard optimization problem on the downlink communication link of ultra-dense scene was divided into two subproblem, such as frequency resource allocation and power allocation, which became a deterministic constraint optimization problem.The frequency resource allocation scheme of different user groups was obtained by using base station clustering based on the improved k-means algorithm and users grouping based on spectral clustering algorithm.The fraction of energy efficiency optimization was transformed into a solvable continuous convex optimization problem and power distribution was realized by Dinkelbach method, and the Lagrange multiplier iterative algorithm, respectively.Jointly optimize system energy efficiency in terms of base station clustering, user grouping, resource block allocation and power allocation, which minimized the inter-cluster interference and intra-cluster interference of the base station efficiently.The simulation results show that the proposed algorithm is better on energy efficiency and computational efficiency compared with existing algorithms.

Key words: heterogeneous network, resource allocation, power allocation, energy efficiency

中图分类号: 

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