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Using 5G TF Signal Analyzer
Introduction
VIAVI CellAdvisor 5G is the ideal field portable solution to validate 5G radio access. Its main 5G TF test functions are carrier
scanner measuring up to eight single component carriers' power as well as the strongest beam and its power level, beam analyzer
assessing individual beam’s ID, power level and signal to noise levels, and coverage verification including real-time coverage map
as well as data available for post-processing.
■
OTA Analysis
▪
Beam Analyzer
▪
Carrier Scanner
▪
Route Map
Selecting mode and measure
To start measurement, do the following steps:
1 Tap 5G TF Signal Analyzer on the MODE panel.
2 Tap any measurement mode from the following choices:
OTA Analysis > Beam Analyzer , Carrier Scanner or Route Map
Conducting OTA measurements
Beam analyzer
5G Beam Analyzer provides the beamforming profile of each transmission carrier, including the eight strongest beams and the
corresponding power levels during its transmission period, and includes:
▪
BRSRP (Beam Reference Signal Received Power)
— cumulative power measurement of the beam through the entire
transmission bandwidth (90 MHz)
▪
P-SS RSSI (Primary Synchronization Signal
– Received Signal Strength Indicator) — average power measurement
through all the primary sync signals
▪
BRS-SNR (Beam Reference Signal
– Signal to Noise Ratio) — is the ratio between the average power of the beam
reference signals through the transmission b
andwidth (90MHz) and average noise level of the carrier’s guard-band
Setting measure setup
Before starting the Beam Analyzer, you need to set Spectrum measurements displayed on the quick access and display tab. See
"
Configuring Spectrum Measurements " for more details.
1 Tap the Setup ( ) icon on the side bar.
2 Tap BRS Tx Period and select the options from < 5 ms , 5 ms , 10 ms , 20 ms or Auto .
Set the BRS transmission period as the following: 1 slot <5 ms, 1 subframe =5 ms, 2 subframes =10 ms, 4 subframes =20 ms. If
you set it to Auto, the CellAdvisor 5G automatically decodes MIB.
3 Tap Beam Index and select between symbol order and subframe region .
You can select symbol order if you want to allocate the beam index in a sequential symbol order in the same antenna. You can
select subframe region if you want to allocate the beam index from 0 to 111 within a subframe.
4 Tap to switch PCI ( Physical Cell ID ) to Manual or Auto .