This is the first time that Shenzhen has full coverage of g-signal of metro line. Passengers can experience the world-class 5g service in the car, which helps Shenzhen, a 5g smart city, shine the light of people’s livelihood, and adds color to the 40th anniversary of the establishment of Shenzhen Special Administrative Region. < / P > < p > Metro Line 6 is a key livelihood project in Shenzhen. In previous tests, the G-Network signals of the two newly opened metro lines are good. Whether it is the platform hall simulating the peak flow of people or the high-speed running subway trains on the spot, the Internet is high-speed and smooth, the communication is clear and stable, and it is also easy and fast to enter the station by swiping the code, which is a subway trip for tens of millions of citizens It will be more comfortable and convenient, and exchanges and economic development from all walks of life will get more communication guarantee. It is understood that Shenzhen Mobile has built a national advanced demonstration network of Metro Line g with high standards and strict requirements of global communication industry for Metro Line 6. < / P > < p > the mobile communication network coverage project of Metro Line 6 has achieved a number of technological innovations, and has overcome various difficulties in subway network coverage in China. The two new metro lines have achieved full band network three-dimensional coverage, using SA independent networking, SPN transmission and other new technologies to meet the demand growth brought by social progress, public use and technological development. Shenzhen Mobile deployed synchronous coverage on two new metro lines g at one time. The network coverage in metro tunnel successfully solved the major problem of 5g co construction and sharing for operators for the first time, while the viaduct section creatively deployed multi-mode macro base stations to achieve continuous coverage. < / P > < p > as early as November 2018, Shenzhen Mobile launched a high standard metro network construction project planning. In September 2019, combined with the progress of subway civil engineering, the construction of mobile network coverage was officially launched. Shenzhen Mobile overcame many difficulties such as narrow tunnel construction space, limited operation skylight, high level of safety protection, joint operation cooperation of multiple types of work, etc., and made emergency adjustment during the period of fighting against the epidemic situation to ensure that the network coverage project progress will not be affected while doing a good job of safety protection. < p > < p > the subway track area belongs to the “red line” area of train operation. The construction of mobile communication coverage must avoid the time of train operation test and maintenance. Since June this year, the subway test trains have been running intensively. Shenzhen mobile network team has arranged the construction according to the situation. The builders work in two shifts a day, 24 hours a day, ready to leave at any time. They carry dry food and heavy load Equipment walking in and out of the tunnel, often for more than ten hours.