Project implementation time:January 2020 - June 2020
Project background:
In order to solve the problem that 1.8GHz frequency in metro cannot enter the airport area, BNT Technology Co. ,Ltd innovatively proposes 1.8GHz + 5.8GHz sub region hybrid network to meet the demand of CBTC service, and effectively solves the problem of limited use of 1.8GHz frequency in the airport and other areas.
Project details:
In January 2020, " Beijing Subway Capital Airport Express EUHT Comprehensive Bearing Test Line Project" officially started construction. Beijing subway capital airport express uses 1785-1795MHz dedicated authorized frequency band to set up A network (red network) with 10MHz working bandwidth, which mainly carries CBTC and other security related services; uses 5725-5850MHz open frequency band to set up B network (blue network) with 80MHz working bandwidth, which carries VMS, PIS and other non-security related large bandwidth services.
By April 30, 2020, the construction and transformation of 28km main line and parking ground network, as well as the comprehensive transformation of two operating vehicles have been completed. The comprehensive bearing test of various services have been successfully completed, and the 1.8GHz + 5.8GHz dual band network of metro vehicle-ground wireless communication has been successfully realized
On May 12, the project was carried out stage acceptance, and the experts of the acceptance group agreed that "the project has realized the comprehensive bearing of CBTC, PIS, VMS, PA, passenger emergency intercom, flight information real-time display and other services, and achieved the construction goal of this project stage".
In June 2020, Beijing subway capital airport express EUHT-5G comprehensive bearing test line will be put into operation to realize high reliability and high safety comprehensive service bearing such as CBTC system. It breaks through the bottleneck of insufficient frequency resources of metro wireless communication, and helps the intelligent construction of Beijing metro.
