Subway screen door disorder on 5G radio waves and 3 companies dedicated to 3 companies
The 5G mobile telecommunications repeater, which was installed by the three mobile telecommunications companies at the subway platform, caused a failure in the platform safety door (screen door) obstacle detection sensor (laser scan sensor).
First, the three mobile telecommunications companies have stopped the output of 5G base stations for national safety, and operated a dedicated task force composed of experts in related fields to prepare for the solution and solution.
On the 25th, the Democratic Party’s Kim Byung-soo, a member of the National Assembly’s Science and Technology Information and Communications Commission, pointed out the problems received from the Korea Railroad Corporation, and said that disability occurred in 30 of the 38 stations of the Seoul headquarters from June 2020 to last month.
The Korea Railroad Corporation judged the high power of the repeater, which was installed by the three companies, which caused the problem of the promotion of the promotion of the river. At the same time, at the request of the Ministry of Science and Technology Information and Communication, the remaining 66 66 history of the 5G base station has been suspended.
The three mobile carriers are transmitting radio waves from external base stations near the subway station for 5G stable services, but they are provided with slower than LTE speed and slower than 5G.
Representative Kim Byung-soo said, While the three mobile telecommunications companies failed to suggest solutions to the relay, there was an accident in which passengers were trapped between the platform safety gate and the electric car last year. In April, we shared the RAIL PDS Laser Scans sensor related test and on-site measurement reports and solutions with Korea Railroad Corporation.
Industry experts analyzed that Korea’s first commercialization of 5G for the first time in the world, and there is still no international standard for radiation resistance, such as railway aircraft for 5G bands, and 5G radio waves in broadband are affecting existing sensors.
In other words, it is not a high-power problem of the provider, but a 280MHz width, which is sent by three mobile communication companies, causes obstacles to obstacles detection sensors in the platform safety door.
As a result, the sensors of Korea and Belgium, which are not radiated for 5G radio waves, are affected, while German products with excellent shielding functions were not affected.
In fact, the three mobile telecommunications companies are sending radio waves by satisfying the current wireless station output standards (standards for wireless equipment for the telecommunications business) or the permit of the installation of wireless soup (Article 19 and 22).
An expert in the industry said, The 5G base station is radio waves in accordance with the standards, but the radiation resistance test standard is a narrowband that cannot measure the 5G broadband environment, so the actual sensor’s radiation is weak. Our country is in 2019 It is necessary to make a resistance test method for international standards, and it is necessary to make this standard quickly.
In addition, The platform is different for each history, so the radio wave environment is different, and in the case of a narrow platform, it is difficult to solve this problem by only the antenna position and height adjustment. Replacing with an unacceptable sensor is a fundamental solution.
Representative Kim Byung-soo said, The three mobile telecommunications companies should prepare immediate measures for national safety and life, such as lowering the output of the repeater or replacing the product with related ministries, research institutes, and public institutions.