[1]张永棠.一种室内可见光通信系统MAC层协议的改进[J].应用科技,2017,44(01):23-26.[doi:10.11991/yykj.201604015]
 ZHANG Yongtang.Improvement of MAC layer protocol of an indoor visible light communication system[J].Applied science and technology,2017,44(01):23-26.[doi:10.11991/yykj.201604015]
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一种室内可见光通信系统MAC层协议的改进(/HTML)
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《应用科技》[ISSN:1009-671X/CN:23-1191/U]

卷:
第44卷
期数:
2017年01期
页码:
23-26
栏目:
现代电子技术
出版日期:
2017-02-05

文章信息/Info

Title:
Improvement of MAC layer protocol of an indoor visible light communication system
作者:
张永棠12
1. 广东东软学院, 广东 佛山 528225;
2. 南昌工程学院, 江西 南昌 330003
Author(s):
ZHANG Yongtang12
1. Guangdong Neusoft Institute, Foshan 528225, China;
2. Nanchang Institute of Technology, Nanchang 330003, China
关键词:
见光通信MAC层协议信道干扰无线网络传输质量
Keywords:
visible light communicationMAC layer protocolchannel interferencewireless networktransmission quality
分类号:
TN29
DOI:
10.11991/yykj.201604015
文献标志码:
A
摘要:
为了解决室内LED照明盲区引起的可见光小区边缘信道干扰问题,对传统的室内可见光通信系统的MAC层协议进行了分析,并有针对性地进行了改进。将梯度较低的终端节点设置较高的优先级,让梯度较低的节点拥有较小的退避窗口初始值,并把最大退避指数减小,以增加节点竞争接入信道的成功率;同时将最大退避次数增加,保证在激烈的信道竞争中不丢失数据。在LED光照度为304 lx的室内环境下,使用OPNET仿真软件对系统进行实验。仿真结果表明,改进后的MAC层协议能够提高终端数据发送成功率,并且提高了网络的吞吐量。
Abstract:
In order to solve the interference of visible-light cell edge channel caused by the blind area of indoor LED illumination, the MAC layer protocol of traditional indoor visible communication system was analyzed and the corresponding improvement measures were taken. The terminal node with a lower gradient was set with a higher priority, so as to make the node with a lower gradient own a smaller initial value of the back-off window. In addition, the maximum back-off index was reduced to increase the competition success rate of node accessing channel; at the same time, the number of maximum back-off times was increased to ensure that data will not be lost in the fierce channel competition. In the indoor environment applying LED illumination with 304 LX, OPNET simulation software was used to test the system. The simulation results show that the improved MAC layer protocol can improve the success rate of data transmission and increase the throughput of network.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2016-04-21。
基金项目:江西省科技创新项目(GJJ12255).
作者简介:张永棠(1981-),男,副教授.
通讯作者:张永棠,E-mail:2968840682@qq.com.
更新日期/Last Update: 2017-02-10