Use of U6 GHz band for mobile: Performance evaluation and impact of shared use with RLANs
BT and Nokia have collaborated to conduct a proof of concept (PoC) trial of a mobile radio network operating in the Upper 6 GHz (U6 GHz) spectrum band at BT’s Adastral Park facility near Ipswich, UK during May 2025. The purpose of the trial was twofold: (a) to explore the coverage and performance that can be achieved using the U6 GHz frequency band, and how this compares with other mid-band spectrum at 3.5 GHz that is available today; and (b) to understand the implications of possible shared use of the U6 GHz band between licensed mobile networks and licence-exempt Wi-Fi, as has been proposed for study by European regulators.
Key Takeaways
- ✓ The trial confirms that the U6 GHz band is well suited for providing additional 5G mobile capacity and supporting future 6G service capabilities
- ✓ Unmodified Wi-Fi equipment and mobile network equipment cannot share the same U6 GHz frequencies without significant risk of mutual interference, which can be very detrimental to user experiences
- ✓ Adjacent channel mobile and Wi-Fi operation in U6 GHz may require a guard band to reduce risk of mutual interference to acceptable levels
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