Journal of Computer Applications ›› 2017, Vol. 37 ›› Issue (5): 1321-1325.DOI: 10.11772/j.issn.1001-9081.2017.05.1321

Previous Articles     Next Articles

Proportional fairness and maximum weighted sum-rate in D2D communications underlaying cellular networks

HU Jing1, ZHENG Wu2   

  1. 1. College of Electronic Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing Jiangsu 210003, China;
    2. College of Network and Communication Engineering, Science and Engineering, Jinling Institute of Technology, Nanjing Jiangsu 211169, China
  • Received:2016-09-26 Revised:2016-12-22 Online:2017-05-10 Published:2017-05-16
  • Supported by:
    This work is partially supported by the National Natural Science Foundation of China (61372126, 61302101), the Natural Science Foundation of Jiangsu Province (BK20130874, BK20140881), the Project of Nanjing University of Posts and Telecommunications (NY213072), the Foundation of Jinling Institute of Technology (JIT-b-201529).

D2D通信蜂窝网络中的比例公平与加权和速率最大化

胡靖1, 郑武2   

  1. 1. 南京邮电大学 电子科学与工程学院, 南京 210003;
    2. 金陵科技学院 网络与通信工程学院, 南京 211169
  • 通讯作者: 胡靖
  • 作者简介:胡靖(1992-),男,江西吉安人,硕士研究生,主要研究方向:D2D通信、无线资源分配算法、通信用户公平性;郑武(1972-),男,安徽铜陵人,高级工程师,博士,主要研究方向:无线网络架构及其演进、无线资源管理、移动性管理。
  • 基金资助:
    国家自然科学基金资助项目(61372126,61302101);江苏省自然科学基金资助项目(BK20130874,BK20140881);南京邮电大学项目(NY213072);金陵科技学院基金资助项目(JIT-b-201529)。

Abstract: In order to solve the problem of user's fairness in D2D (Device-to-Device) communication system, firstly, the existing proportional fairness principle was extended to derive an optimization problem relating to weighted sum-rate, and then a KMPF (Kuhn-Munkras Proportional Fair) resource allocation algorithm was proposed to optimize it. The algorithm maximized the user's weighted sum-rate through power control, and allocated the cellular user's resources that could be reused for the D2D users according to maximization of the total weighted sum-rate by Kuhn-Munkras (KM) algorithm. Simulation results show that the fairness index of the proposed algorithm is 0.4 higher than that of the greedy resource allocation algorithm and the throughput of the system is over 95% of its level, and the throughput of proposed algorithm is about 50% higher than that of the random resource allocation algorithms. It is shown that the algorithm can solve the problem of user's fairness while considering the system throughput.

Key words: Device-to-Device (D2D), resource reuse, proportional fairness, weighted sum-rate, throughput

摘要: 针对终端直通(D2D)通信系统中用户的公平性问题,首先对现有的比例公平原则进行扩展,推导出一个与加权和速率有关的优化问题,然后提出了一个最大带权匹配比例公平(KMPF)资源分配算法对其进行优化。该算法通过功率控制最大化用户的加权和速率,并由最大带权匹配(KM)算法按照系统总的加权和速率最大原则为D2D用户分配可以复用的蜂窝用户资源。最后由仿真结果可得,该算法在使得系统公平指数相对于贪婪资源分配算法高出0.4的同时保证系统吞吐量达到其水平的95%以上,而相对于公平性较好的随机资源分配算法,该方案得到的系统吞吐量提高了约50%,说明该算法能在兼顾系统吞吐量的同时解决系统公平性问题。

关键词: 终端直通, 资源复用, 比例公平, 加权和速率, 吞吐量

CLC Number: