Saisi × Beijing Daxing International Airport｜Saisi 1588 Time Server Ensures Stable Operation of Beijing New Airport Line

Apr. 22, 2026

Beijing Subway New Airport Line, also referred to as the Beijing Second Airport Line, stretches 41.36 km in total, serving stations including Lize Business District, Caoqiao, Guanyinsi, Daxing Airport North Terminal and Daxing Airport South Terminal (reserved). The line boasts a maximum train speed of 160 km/h and an operational speed of 110 km/h, with a travel time of merely 19 minutes from Caoqiao to the new airport.The line is equipped with the Saisi IEEE1588 Time Server, delivering robust safety guarantees for the smooth and reliable operation of rail transit.

Developed by Zhejiang Saisi, this time server is a high-precision network synchronization device supporting OC, TC and BC operating modes. Its IEEE1588 solution overcomes the high-cost 1:1 deployment ratio between traditional GPS systems and base stations, enabling a 1:N configuration. This innovation reduces the number of required GPS systems by up to 80%, cutting hardware demand to only 20% of conventional schemes. It effectively addresses the pain points of traditional GPS time synchronization solutions, such as difficult construction and high expenditure. At present, the product is widely deployed in key synchronization fields including mobile operators, electric power and rail transit.

As one of the leading enterprises in China’s time and frequency industry in terms of R&D capability and corporate scale, Zhejiang Saisi is also among a select few suppliers worldwide certified by China Mobile for its 5G high-precision time server test. Committed to driving the advancement of the time and frequency industry, Saisi strives to reward customer trust with premium products and professional services, and continues to empower the high-quality development of the rail transit industry.

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