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- Passenger Wi-Fi on subway trains is a service provided primarily for wireless internet access for metro passengers on board subway trains. Wi-Fi for subway passengers is a standard service provided in the majority of large cities worldwide. Wi-Fi in stations is present in the systems of Hong Kong, London, New York, Moscow, St. Petersburg, Singapore, Tokyo, and Toronto. Delivering high-speed Wi-Fi on underground trains is more complex and requires two radio networks: one which delivers the signal to tunnels and trains (a Trackside Network or TSN), and a Wi-Fi network on board the trains to enable passenger connectivity. Wi-Fi connectivity currently operates on underground trains in Moscow and St. Petersburg in Russia; Seoul in South Korea; Delhi's Airport Express in India; and Guangzhou, Shenzhen, Wuhan, and Shanghai in China. The first known subway system to install onboard Wi-Fi was the Seoul Metro in 2009. The trackside network was based on WiMAX or WiBro (IEEE 802.16m). Trains were connected to the TSN at a speed of about 30Mbit/s and the Wi-Fi service was provided only to Korean Telecom (KT) subscribers over a private Wi-Fi network. Later, in 2017, it was announced that the network would be renovated to deliver high-speed Wi-Fi to the general public. High-speed free public onboard Wi-Fi was first introduced by MaximaTelecom in the Moscow Metro in 2013. By the end of 2014, all 12 metro lines were equipped with a 5 GHz TSN delivering up to 150Mbit/s per train with an average of 80Mbit/s. The last known deployment was in Guangzhou in 2018, which reportedly features over 400Mbit/s speed per train. The fastest onboard network in the world was built in the St. Petersburg metro. It features up to 500Mbit/s speed per train and was built by MaximaTelecom at the end of 2017. (en)
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- Passenger Wi-Fi on subway trains is a service provided primarily for wireless internet access for metro passengers on board subway trains. Wi-Fi for subway passengers is a standard service provided in the majority of large cities worldwide. Wi-Fi in stations is present in the systems of Hong Kong, London, New York, Moscow, St. Petersburg, Singapore, Tokyo, and Toronto. Delivering high-speed Wi-Fi on underground trains is more complex and requires two radio networks: one which delivers the signal to tunnels and trains (a Trackside Network or TSN), and a Wi-Fi network on board the trains to enable passenger connectivity. Wi-Fi connectivity currently operates on underground trains in Moscow and St. Petersburg in Russia; Seoul in South Korea; Delhi's Airport Express in India; and Guangzhou, Sh (en)
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- Passenger Wi-Fi on subway trains (en)
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