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基于干扰管理的异构VLC/WiFi网络子信道分配

Subchannel Resource Allocation in Heterogeneous VLC/WiFi Networks Based on Interference Management

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摘要

针对异构VLC/ WiFi网络的多接入点布局的信道干扰问题,提出了改进遗传算法的干扰抑制子信道分配(IGA-ISSA)方案。该方案依据VLC信道质量状况,为用户决策接入网络。对接入VLC网络的用户,根据用户位置特征划分优先等级,采用冲突图为不同等级用户设计干扰抑制的子信道分配方案,并使用改进遗传算法优化VLC子信道的分配方案。对需要接入WiFi网络的用户,根据用户的差异化速率需求为用户分配子信道。仿真结果表明,所提方案能提高VLC/WiFi网络的吞吐量与用户满意度。

Abstract

In this study, we propose an improved genetic algorithm, i.e., an interference suppression subchannel allocation (IGA-ISSA) scheme, to solve the channel interference problem that can be attributed to the layout of multiple access points in heterogeneous VLC/WiFi networks. In IGA-ISSA, decision-making is designed for the user to select a VLC or WiFi network in accordance with the VLC channel quality. Further, the users are classified into three priority levels according to the user location characteristics in VLC. Subsequently, a subchannel allocation scheme is designed based on the user conflict graph with respect to different levels for suppressing the interference. Furthermore, IGA-ISSA is introduced to optimize the subchannel allocation for the VLC network. Finally, a WiFi subchannel allocation scheme is designed based on the different user-required rates with respect to the allocated WiFi subchannel in case of users accessing a WiFi network. The simulation results denote that the IGA-ISSA scheme can improve the throughput and user satisfaction with respect to a VLC/WiFi network.

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中图分类号:TN929.74

DOI:10.3788/CJL201946.1206002

所属栏目:光纤光学与光通信

基金项目:国家自然科学基金、重庆市自然科学基础研究与前沿探索项目;

收稿日期:2019-07-01

修改稿日期:2019-08-19

网络出版日期:2019-12-01

作者单位    点击查看

刘焕淋:重庆邮电大学通信与信息工程学院, 重庆 400065
林振宇:重庆邮电大学通信与信息工程学院, 重庆 400065
陈勇:重庆邮电大学工业物联网与网络化控制教育部重点实验室, 重庆 400065
蒲欣:重庆邮电大学通信与信息工程学院, 重庆 400065

联系人作者:刘焕淋(liuhl@cqupt.edu.cn)

备注:国家自然科学基金、重庆市自然科学基础研究与前沿探索项目;

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引用该论文

Liu Huanlin,Lin Zhenyu,Chen Yong,Pu Xin. Subchannel Resource Allocation in Heterogeneous VLC/WiFi Networks Based on Interference Management[J]. Chinese Journal of Lasers, 2019, 46(12): 1206002

刘焕淋,林振宇,陈勇,蒲欣. 基于干扰管理的异构VLC/WiFi网络子信道分配[J]. 中国激光, 2019, 46(12): 1206002

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