At the MWC Barcelona 2026 event held in March 2026, Huawei and China Telecom jointly demonstrated the breakthrough wireless uplink technology of the 5G-A (5.5G) era. This technology aims to overcome the long-standing issues in traditional networks, such as slow upload speeds, weak signals, and unstable rates, providing a solid foundation for high-definition live streaming, large-capacity data backhaul, and AI cloud interaction.

In on-site tests conducted in Anhui, Huawei's 2.1G 8T equipment showed remarkable performance: its uplink peak rate successfully exceeded 1 Gbps and ensured stable transmission of 20 Mbps across all scenarios. This marks that 5G-A has already gained the strength to surpass traditional broadband when handling complex uplink demands.

Core Black Technology: High and Low Frequency Collaboration and Super Uplink

To address the balance between signal coverage and speed, both parties introduced several cutting-edge solutions:

  • High and Low Frequency Collaboration and SUL Technology: Using the strong coverage capability of low-frequency bands to supplement the weak uplink areas of high-frequency bands, ensuring users still have a smooth upload experience indoors or at the edge of coverage.

  • Super Uplink Technology: At the "5G-A × AI Large Uplink Technology Innovation Conference" held in Hefei, Huawei demonstrated how frequency fusion technology can double uplink performance, making real-time data synchronization for various AI smart terminals possible.

Field Testing: Jinghu High-Speed Railway and Successful Pilot Applications in Three Locations

The 5G-A large uplink technology has moved beyond the laboratory and entered challenging practical scenarios:

  • High-Speed Railway Model: This technology has been successfully applied to the 5G-A network on the Jinghu High-Speed Railway, solving the problems of video call lag and large file transfer interruption under high-speed mobile conditions.

  • Multi-City Coordination: Currently, Shanghai, Hefei, and Chanchun County have launched pilot applications. Third-party test data shows that customer satisfaction in the pilot areas exceeds 98%.

Deep Integration: 5G-A Collaborates with AI to Open a New Intelligent Era

Huawei and China Telecom stated that the evolution of 5G-A is not isolated. With the popularization of AI applications, the demand for perception, learning, and data upload from terminal devices is growing exponentially. The two sides will continue to promote the deep integration of 5G-A and AI, using more powerful network uplink capabilities to help industries such as industrial internet, intelligent cockpits, and urban security achieve intelligent upgrades.