室内VLC与Wi-Fi混合组网架构设计及吞吐量性能分析

发布时间：2018-08-04 08:04

【摘要】：为解决大型室内场所高密度用户、高服务质量业务需求问题,在对Wi-Fi布设现存弊端及可见光通信(visible light communication,VLC)技术特点进行分析的基础上,提出了一种室内多个VLC热点与一个Wi-Fi热点混合组网的方案,对混合组网的系统架构进行了设计。同时,在灯的典型正方形布局方式条件下,以10 m×10 m×3 m的房间为例,给出了一种对多盏灯进行分组以改变VLC热点数量的方法,对布设灯的个数、VLC热点数量及发光半功率角等参数进行了综合优化以提高光链路的吞吐量性能。仿真结果表明,在保证有效的照明面积与通信面积前提下,优化后的光链路吞吐量是一个Wi-Fi热点的16.7倍,同时相比一般的一盏灯即一个热点的布设方法,吞吐量有了明显提升,从而提高了系统总吞吐量及用户的服务质量。
[Abstract]:In order to solve the problem of high density users and high service quality in large indoor places, this paper analyzes the disadvantages of Wi-Fi placement and the technical characteristics of (visible light communication in visible light communication. In this paper, a scheme of indoor VLC hotspots and a Wi-Fi hot spot hybrid network is proposed, and the system architecture of the hybrid network is designed. At the same time, under the condition of the typical square layout of the lamp, taking the room of 10 m 脳 10 m 脳 3 m as an example, a method of grouping multiple lamps to change the number of VLC hot spots is given. The number of lights and the number of VLC hotspots and the luminous half-power angle are optimized to improve the throughput performance of the optical link. The simulation results show that the optimized optical link throughput is 16.7 times that of a Wi-Fi hot spot under the premise of ensuring effective lighting area and communication area. At the same time, the throughput of the optimized optical link is significantly improved compared with the general layout method of a lamp or a hot spot. Thus, the total throughput of the system and the service quality of the users are improved.
【作者单位】：信息工程大学信息系统工程学院;
【基金】：国家“863”计划资助项目(2013AA013603)
【分类号】：TN92

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