车地无线局域网可靠通信的研究

摘要

Based on data characters of WLAN applied in metro. Requirements for communication system, including safety, real - time communication and data format are presented. According to the tested result of metro WLAN, the key problems such as throughput, latency and packet loss are discussed. Then from the angle of communication system's reliability, suggestions for the optimum WLAN layout and the system design are put forward.%对城市轨道交通应用车地无线局域网所承载的应用系统的数据特点进行了分析,从系统安全性、传输实时性、数据包格式等角度描述了应用系统对车地无线局域网的承载需求.结合城市轨道交通车地无线局域网现场测试数据,阐释了目前应用中所存在的带宽、时延、丢包等关键问题.从保障通信系统可靠性的角度出发,提出了优化车地无线局域网部署的措施和优化应用系统的建议.