Compensated SNR Setup for NR UE RF Noise
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Solution Overview
Problem
Current test methodologies for New Radio (NR) user equipment (UE) performance requirements fail to accurately account for the impact of radio-frequency (RF) noise on baseband signal-to-noise ratio (SNR) in both FR1 and FR2 frequency ranges, leading to inconsistent and suboptimal performance testing across different frequency bands and device types.
Innovation Solution
The proposed solution involves a test device with processor circuitry that determines a compensated SNR degradation by considering both baseband and RF noise levels, allowing for the setup of band-specific SNR and noise power levels to minimize the impact of RF noise on baseband SNR during performance testing, thereby ensuring consistent performance across various frequency bands and device types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If current test methodologies are used for NR UE performance requirements, then testing can be performed across different frequency bands, but the impact of RF noise on baseband SNR is not accurately accounted for, leading to inconsistent performance testing
Solution Approach 1:
The patent changes the parameters of SNR setup by introducing compensated SNR values that account for RF noise power levels. The test device determines compensated SNR degradation based on signal power level, artificial noise power level, and RF noise power level, then uses these compensated values to setup baseband SNR. This ensures accurate SNR measurement across different frequency bands while maintaining consistent performance testing reliability.
2Measurement precision
If band-specific SNR setup is implemented to minimize RF noise impact, then performance testing accuracy improves, but test device complexity increases due to additional noise level determinations
Solution Approach 1:
The test device performs preliminary determination of RF noise power levels and compensated SNR degradation values before actual performance testing. By pre-calculating these compensation parameters based on signal power level, artificial noise power level, and measured RF noise power level, the device eliminates the need for complex real-time adjustments during testing, thereby improving measurement precision while managing device complexity through advance preparation.
Data Source
AI summary
Some embodiments of this disclosure are directed to apparatuses and method for establishing signal-to-noise ratio (SNR), useful signal power level (Es) and artificial noise power level (Noc) values for new radio (NR) performance requirements. The apparatuses and methods can include processing a received signal including the Es and Noc and determining a baseband signal-to-noise ratio (SNR) degradation based on the signal power level, the artificial noise power level, and the radio-frequency noise power level. The apparatuses and methods can then determine a compensated SNR degradation, as a performance requirement, based on the baseband SNR degradation and the radio-frequency noise power level.