Zhejiang Mobile joins hands with Huawei to refresh mobile phone downlink speed record, approaching the theoretical limit of 5.4Gbps

News on March 22, Zhejiang Mobile Hangzhou Branch recently cooperated with Huawei to successfully achieve an astonishing downlink rate of 5.4Gbps for commercial mobile phones in Hangzhou. This achievement not only refreshed the industry record, but also approached the theoretical limit. . This technological breakthrough further consolidates Zhejiang's leading position in the field of digital intelligence development. Following the "First Ubiquitous Gigabit City", it has once again moved towards a new milestone of 5G-A "Double 10 Gigabit City".

According to the editor’s understanding, the key to this breakthrough lies in the innovative application of multi-carrier aggregation technology. Zhejiang Mobile Hangzhou Branch and Huawei successfully combined carriers in different frequency bands to achieve a significant increase in data transmission speed and a significant reduction in latency. During the implementation process, they used commercial mobile phones for the first time and used four-stream concurrent superposition 1024QAM modulation on the terminal. By aggregating the 100M 60M carrier of the 2.6G site and the 100M carrier of the 4.9G site, the downlink rate of 5.4Gbps, which is close to the theoretical peak limit, is finally reached.

As naked-eye 3D display technology continues to mature in terms of optical display and content processing, full-sensory, full-interaction immersive experience is gradually becoming a reality. However, this experience places extremely high demands on mobile phone network transmission bandwidth. Similarly, the rapid development of call services also poses new challenges to network bandwidth and deterministic experience. The implementation of new services such as screen lighting, call subtitles/intelligent translation, and fun calls all require strong network support. Against this background, the results of the cooperation between Zhejiang Mobile Hangzhou Branch and Huawei are particularly important. It not only provides a solid technical foundation for future naked-eye 3D content and call services, but also points the way for the development of the entire industry.​

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