Summary of the Study on High Speed Railway Access Network

Up to 2017, the total mileage of the Chinese high-speed railway (HSR) exceeded 22,000 km. Benefiting from the rapid socioeconomic development and the widely use of smart phones, more and more passengers need to access broadband information services through wireless networks while they are on travel. However, it's a great challenge to supply stable and reliable wireless access services to high speed railway passengers at the speed of 350 km/h. In this paper, we will discuss all the challenges to the HSR access network, and then analyze the existing solutions, which provide an important reference for the follow-up research.