Measurement and analysis of the WiFi service system in high-speed rail

Abstract

As a high speed and long running distance important public transport vehicle, high-speed rail has the properties of large passenger capacity, high passenger density and high running frequency. Since mobile devices such as laptops, smart phones, and smart watches are more and more popular these years, passengers use mobile devices as rest and entertainment method more and more frequently. Thus, the demand of wireless networking using in high-speed rail is growing fast. But the high mobility caused by the 350 km/h velocity of high-speed rail brings huge problem and challenge. The high-speed rail WiFi service system uses modern information technology and provides local area network service in carriage and access of the Internet for the passengers. Analysis of real trace that passengers access the Internet in high-speed rail shows that most flows are small, low rate and has short duration time. By using cellular service from different operators, the high-speed rail WiFi system can provide passengers acceptable throughput and stable wireless network environment.

Keywords

• wireless networking
• WiFi on high-speed rail
• TCP analysis
• 4G LTE