Core Insights - Guangdong Unicom has successfully achieved full 5G network coverage for high-speed rail and intercity lines in Guangdong, providing a robust digital guarantee for the Spring Festival travel season [1][9] - The company has developed a unique "Guangdong Smart" 5G coverage system to address challenges posed by high-speed movement, complex terrain, and high passenger density [4][9] Group 1: Challenges in High-Speed Rail Communication - By December 2025, the operational mileage of Guangdong's high-speed rail and urban rail transit is expected to exceed 3,411 kilometers and 1,653 kilometers, respectively, ranking first in the country [2] - High-speed trains traveling at 350 km/h can cause signal interruptions, while the high bridge and tunnel ratio and diverse terrain in Guangdong create signal blind spots [2] - High passenger volumes, with Guangzhou South Station averaging 480,000 passengers and Shenzhen averaging 350,000 passengers daily, place extreme demands on network capacity [2] Group 2: Innovative Technical Solutions - Guangdong Unicom has adopted a scientific and practical approach to create a 5G coverage system, utilizing big data and AI for network modeling and analysis [4] - The company has established a four-dimensional technical system that includes "5G private network enhancement, multi-carrier aggregation, large-scale antenna arrays, and smart sentinel energy-saving" to significantly improve network capacity at major transportation hubs [4] - Innovative solutions such as new leakage cables, green antennas, and digital room distribution have been implemented to ensure comprehensive network coverage in tunnels, bridges, and high-capacity stations [4] Group 3: Achievements and Future Plans - The 5G public network coverage for the 401 kilometers of the Guangzhan high-speed rail was completed in just 100 days, despite a 77% bridge-tunnel ratio and complex terrain [7] - As of December 22, 2025, the 5G full coverage project for high-speed rail and intercity lines was completed, with an average download speed exceeding 127 Mbps and a comprehensive coverage rate of over 91.82% [9] - Future plans include further integration of 5G with smart rail systems and enhancing communication infrastructure in the Guangdong-Hong Kong-Macao Greater Bay Area to support high-quality economic and social development [9]