›› 2016, Vol. 29 ›› Issue (9): 65-.

• 论文 • 上一篇    下一篇

地铁乘客信息系统中无线局域网关键技术研究

胡飞飞,沈昱明   

  1. (上海理工大学 光电信息与计算机工程学院,上海 200093)
  • 出版日期:2016-09-15 发布日期:2016-09-26
  • 作者简介:胡飞飞(1990-),男,硕士研究生。研究方向:计算机应用、通信技术等。
  • 基金资助:

    全国大学生科技创新重点项目(201310252012)

Key Technologies of Wireless Local Area Network in the Subway Passenger Information System

HU Feifei, SHEN Yuming   

  1. (School of Optical-electrical and Computer Engineering, University of Shanghai for Science and Technology,
    Shanghai 200093, China)
  • Online:2016-09-15 Published:2016-09-26

摘要:

基于无线局域网80211g标准,结合地铁隧道中的实际环境,构建了一个无线传输网络,在地铁乘客信息系统中采用了无线局域网。文中分析了地铁乘客信息系统中无线局域网的频点规划,并实现了基于无线局域网的乘客信息系统。该系统可保证下传一路6 Mbit·s-1的MPEG-2视频流,同时能够给中心子系统上传一路2 Mbit·s-1的监视信息。在实际环境中对系统所得的带宽数据进行了分析与测试,测试结果表明,系统能满足实际应用需求。

关键词: 乘客信息系统, 无线局域网, 无线接入点, 车载无线设备

Abstract:

Based on the 80211g, combined with the actual environment in the subway tunnel, a wireless transmission network is constructed for the subway passenger information system. The frequency planning of the WLAN  in the subway passenger information system is analyzed and the passenger information system based on the WLAN is realized. This system is capable of downloading one way 6 Mbit·s-1 MPEG-2 video stream and uploading one way 2 Mbit·s-1 monitoring information to the central subsystem. In the actual environment, the system is analyzed and tested. The test results show that it can meet the actual demand.

Key words: passenger information system, WLAN, wireless access point, vehicular wireless equipment

中图分类号: 

  • TN926+.4