电子学报 ›› 2021, Vol. 49 ›› Issue (10): 1920-1926.DOI: 10.12263/DZXB.20210072

所属专题: 无线光通信及其组网技术

• 无线光通信及其组网技术 • 上一篇    下一篇

室内VLC-WiFi异构网络基于动态载波分配的干扰管理策略

刘焕淋1, 蒲欣1, 陈勇2, 黄美娜1, 陈金林1   

  1. 1.重庆邮电大学通信与信息工程学院,重庆 400065
    2.重庆邮电大学自动化学院,重庆 400065
  • 收稿日期:2021-01-06 修回日期:2021-02-24 出版日期:2021-10-25 发布日期:2021-10-25
  • 作者简介:刘焕淋 女,1970年生,重庆人.重庆邮电大学教授、博士和硕士生导师.主要研究方向为光通信技术和网络. E-mail:liuhl@cqupt.edu.cn
    蒲 欣 女,1995年生,宁夏固原人.重庆邮电大学硕士研究生.主要研究方向为可见光通信技术. E-mail:727206138@qq.com
    陈 勇 男,1963年生,重庆人.重庆邮电大学教授、硕士生导师.主要研究方向为自动控制和光信号处理.
    黄美娜 女,1994年生,广东潮州人.重庆邮电大学硕士研究生.主要研究方向为可见光通信技术.
    陈金林 男,1996年生,江西鹰潭人.重庆邮电大学硕士研究生.主要研究方向为可见光通信技术.
  • 基金资助:
    国家自然科学基金(NSFC 61275077);重庆市自然科学基金面上项目(2019 jcyj-msxmX0613)

Interference Management Strategy Based on Dynamic Carrier Allocation for Indoor VLC-WiFi Heterogeneous Network

Huan-lin LIU1, Xin PU1, Yong CHEN2, Mei-na HUANG1, Jin-lin CHEN1   

  1. 1.School of Communication and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing,400065,China
    2.School of Automation,Chongqing University of Posts and Telecommunications,Chongqing,400065,China
  • Received:2021-01-06 Revised:2021-02-24 Online:2021-10-25 Published:2021-10-25

摘要:

为了有效地管理VLC-WiFi异构网络的小区间干扰,该文设计基于用户中心接入的动态载波分配(DCAUCA)方法,该方法依据用户请求速率构建大小不同的multi-AP小区,对各multi-AP小区依据用户请求速率与网络服务速率的差值降序排列,并依次为各multi-AP小区的VLC AP分配载波.同时,提出基于VLC AP发射功率控制的小区残余干扰抑制(RISPC)策略以进一步优化干扰管理效果.仿真结果表明,DCAUCA方法相较于对比方法最高可提升52.15%的系统吞吐量与7.10%的用户满意度,RISPC策略相较于DCAUCA方法最高可提升9.66%的系统吞吐量.

关键词: VLC-WiFi异构网络, 小区间干扰, 动态载波分配, 干扰管理, 系统吞吐量

Abstract:

In order to manage the inter-cell interference of the visble light communication-wireless fidelity (VLC-WiFi) heterogeneous network effectively, a dynamic carrier allocation method based on user centric access (DCAUCA) was designed in this paper, in which multi-AP cells were constructed for users according to user rates and the differences between user request rate and network service rate of each cell was sorted in descending order for the purpose of allocating carriers to each VLC AP sequentially. Furthermore, a strategy called residual interference suppression based on transmitting power control (RISPC) was proposed to further suppress residual interference. Simulation results show that, compared with the comparison method, the DCAUCA improves system throughput by up to 52.15% and user’s satisfaction by up to 7.10%. Compared with DCAUCA, the RISPC improves system throughput by up to 9.66%.

Key words: VLC-WiFi heterogeneous network, inter-cell interference, dynamic carrier allocation, interference management, system throughput

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