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A simple “RF-flashlight” (or ground-to-satellite) interference testbed is proposed to experimentally verify (i) real-time geofencing (RTG) for protecting passive Earth Exploration Satellite Services (EESS) radiometer measurements from 5G/6G mm-wave transmissions, and (ii) ground-to-satellite propagationmodels used in the interference modeling of this spectrumcoexistence scenario. RTG is a stronger EESS protectionmechanism than the current methodology recommended by theITU based on a worst-case interference threshold whilesimultaneously enabling dynamic spectrum sharing and coexistencewith 5G/6G wireless networks. Similarly, verifying moresophisticated RF propagation models that include ground topology,buildings, and non-line-of-sight paths will provide better estimatesof interference than the current ITU line-of-sight model and, thus,a more reliable basis for establishing a consensus among thespectrum stakeholders.
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Performance of Real-Time Geospatial Spectrum Sharing (RGSS) between 5G Communication Networks and Earth Exploration Satellite Services
A proof of concept system that enables real-time geospatial spectrum sharing between 5G/6G networks and Earth Exploration Satellite Services (EESS) has been developed. A simple algorithm that pauses network transmissions when there is potential interference from 5G/6G transmitters provides 99.6% network availability in the 24 GHz NR2 band while protecting all currently working EESS radiometers operating in the 23.8 GHz band. A more sophisticated algorithm that modifies transmission power levels and (if necessary) network traffic (similar to the methodologies used by Citizens Broadband Radio Service) can reduce interference so that there is no adverse impact on network availability. In addition to preventing interference, RGSS provides other significant benefits to both the wireless and the weather/climate communities, including improving network performance and coverage, the ability to support changes in network architectures, network elements, endpoints, and new or more sensitive radiometers, and a simple mechanism to test and police compliance with out-of-band emission requirements. RGSS is also compatible with existing spectrum management systems.
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- PAR ID:
- 10519045
- Publisher / Repository:
- IEEE
- Date Published:
- ISBN:
- 978-1-6654-1339-8
- Page Range / eLocation ID:
- 73 to 79
- Subject(s) / Keyword(s):
- 5G 6G mm-wave out-of-band emissions spectrum sharing earth exploration satellite services spectrum management
- Format(s):
- Medium: X
- Location:
- Los Angeles, CA, USA
- Sponsoring Org:
- National Science Foundation
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- Free Publicly Accessible Full Text
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Accepted Manuscript1.0
- Conference Paper:
- https://doi.org/10.1109/DySPAN53946.2021.9677268
