Coexistence of Mobile Broadband IMT Systems and UWB Keyless Entry Systems above 6.5 GHz

Carsten Monka-Ewe; Lukas Berkelmann; Richard Wolf; Jan Oliver Oelerich; Thorsten Schönfelder; Marco Kühnel; Zhichao Chen; Alin Stanescu; Oliver Kushova; Daniel Siekmann; Bert Jannsen

arXiv · 2401.17889

Coexistence of Mobile Broadband IMT Systems and UWB Keyless Entry Systems above 6.5 GHz

Carsten Monka-Ewe·Lukas Berkelmann·Richard Wolf·Jan Oliver Oelerich·Thorsten Schönfelder·Marco Kühnel·Zhichao Chen·Alin Stanescu·Oliver Kushova·Daniel Siekmann·Bert Jannsen

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Abstract

The ever-increasing need for spectrum for mobile broadband systems has led to the recent allocation of spectral resources for International Mobile Telecommunication (IMT) services in the upper mid band (6.425 - 7.125 GHz) at the World Radio Conference (WRC-23) as well as to the creation of an agenda item on identifying future IMT bands in the frequency region 7.125 - 10.5 GHz at WRC-27. The severity of the impact of these frequency allocations on existing UWB systems, which have been using this part of the spectrum as a sub-secondary user for many years, is still subject to controversial discussions. This paper contributes a study on the impact of IMT on a real-world vehicular UWB keyless entry system to this discussion. It is shown that both the car's wireless on-board unit and a nearby basestation may drastically affect the system's performance.

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Carsten Monka-Ewe, Lukas Berkelmann, Richard Wolf, Jan Oliver Oelerich, Thorsten Schönfelder, Marco Kühnel, Zhichao Chen, Alin Stanescu, Oliver Kushova, Daniel Siekmann, Bert Jannsen. 2024-01-31. Coexistence of Mobile Broadband IMT Systems and UWB Keyless Entry Systems above 6.5 GHz. https://arxiv.org/abs/2401.17889

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