In order to improve the network quality of the transportation hub area, to build a stable, flexible, high-capacity maintenance capacity of mobile networks, China Telecom Nanjing Branch took the lead in the use of three-frequency micro-station technology, railway stations, subways and other mobile business-intensive typical scene coverage, effectively solve the traditional room system maintenance efficiency low, fault location difficulties,

The capacity adjustment needs to depend on the engineering transformation and so on. Nanjing railway station Daily traffic volume nearly 300,000 times, the traffic is high, the crowd is big. Nanjing Telecom to the railway station South and north of the 800/1.8/2.1 full frequency coverage, the installation of PRRU equipment, complete the system to open. The three-frequency equipment used in the network has the characteristics of simple capacity configuration, flexible ability adjustment and indoor and outdoor condominium.

Through the new system deployment, the overall coverage of shelters reached 99.8%, the signal strength increased by nearly 63%, the average downward rate to 56Mbps; Meanwhile, the fault detection and location time are shortened greatly, which effectively improves the coverage perception and maintenance ability of the scene. Nanjing Subway daily passenger flow of more than 2.8 million times, not only huge flow of people, but also face equipment aging, subway signal quality, such as serious decline, its Line 1 line, Line 2-line components have been used for more than 10 years. Nanjing Telecom Organization to maintain and optimize the backbone, piecemeal discussion of the renovation plan, rapid construction. For some common station hall, platform of the old distribution system, according to the priority scheduling, 1.1 cases, through the new technology distribution system reconstruction, to completely solve the old system quality instability, intermodulation interference, rssi anomalies, such as the completion of the new station area distribution system cut, the renovation effect is remarkable.