China Mobile, ZTE revolutionize high-speed railway with 5G-A digital twin

• KunchuDali high-speed railway involves a large number of network planning challenges such as cross-bridge coverage, tunnel coverage, mountain-splitting area shielding, and abundant vegetation
• China Mobile's Yunnan Branch and ZTE introduced the 5G-A digital twin technology to build two core capabilities of digital site twinning and wireless channel twinning

Shenzhen, China, 25 March 2024 - ZTE Corporation (0763.HK / 000063.SZ), a global leading provider of information and communication technology solutions, in partnership with China Mobile’s Yunnan Branch, has created a new paradigm of high-speed rail network construction by applying 5G-A digital twin technology in KunchuDali high-speed railway, realizing signal upgrading and network advancement to meet the people's needs for a better life.

The KunchuDali high-speed railway forms a vital segment of the China-Myanmar International Railway and the Trans-Asian Railway west line, connecting the key cities of Kunming, Chuxiong, Dali, and Lijiang in Yunnan Province. Serving as the backbone of the region's transportation infrastructure, this route facilitates the daily movement of approximately 61,000 passengers, earning its reputation as the "golden tourism route."

However, the railway's construction and operation face formidable obstacles due to the rugged terrain characterized by fluctuating mountain ranges, perilous topography, and dense vegetation. Notably, a significant portion of the route traverses areas with a high concentration of bridges and tunnels, accounting for 64% of its total length. Moreover, many construction sites are situated in abnormal mountain zones, posing challenges to the efficiency and quality of surveying efforts.

China Mobile's Yunnan Branch and ZTE introduced the 5G-A digital twin technology to build two core capabilities of digital site twinning and wireless channel twinning. The 3D site twinning is achieved through UAV automatic flight control acquisition, thus implementing inspection survey of engineering parameters and AI identification of antenna assets, and guaranteeing engineering implementation quality with high efficiency and high quality.

In addition, channel twinning is built in mountainous areas to achieve coverage prediction and optimization. The optimization elements required for mountainous areas, namely the azimuth, downtilt, power, and beam weights of antennas, are twinned and optimized beforehand. In this way, with the first-in-place construction of the pre-planning, the construction quality of the high-speed railway network is guaranteed faster and better, and the optimization period is shortened. Before the Spring Festival of 2024, the KunchuDali high-speed railway fully achieved the target of high-quality lines, with a coverage rate of 98.5% and a 5G download rate of more than 300Mbps. Compared with traditional planning and optimization methods, the KunchuDali high-speed railway saved more than RMB1.6 million and shortened the optimization period for nearly one month.

During the Spring Festival, China Mobile's Yunnan Branch ensured an excellent internet experience for users with its high-quality high-speed railway network. The implementation of digital twin technology for high-speed railways enables efficient site surveys and coverage optimization to achieve higher efficiency and quality. This advancement fosters the deep integration of various industries with digital twin technology, paving the way for new industries, ecosystems, and operational modes. Furthermore, it lays a solid digital foundation for the future evolution towards 6G.

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