Viavi CellAdvisor 5G, User Manual

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CellAdvisor 5G User's Guide
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- Tap Offset RB and Number of RBs to set resource blocks within the range of BWP using the on-screen keyboard.
NOTE
You need to input values for Offset RB and Number of RBs considering the range that actual data should be
allocated. As the input values need to be within the range of BWP, if you assign data from BWP start RB, the Offset
RB should be 0.
- Tap Start Symbol and Number of Symbols set from 10 to 13 using the on-screen keyboard.
- Tap Modulation type and select the options from: QPSK , 16 QAM , 64 QAM , or 256QAM
e Tap PDSCH DM-RS and do the following steps:
PDSCH DMRS is a special type of physical layer signal which functions as a reference signal for decoding PDSCH in 5G
NR:
- Select N
SCID
between 0 or 1 . The quantity N
SCID
ϵ {0,1} is given by the DM-RS sequence initialization field, if DCI is
associated with the PDSCH transmission, 1 is selected and, otherwise 0 is used.
- Select N
ID
source between Scrambling ID and PCI . Set Scrambling ID for configuring with the
higher-layer
parameter data-scrambling identity
or PCI from the physical cell ID and input the required value using the on-
screen keyboard.
- Select between Mapping Type A and B . Set Mapping Type A to start only at symbol 2 or 3 within a slot, meaning that
SLIV (Start and Length Indicator for the time domain allocation for PDSCH) that starts from symbol 4 or higher cannot
use this type of DMRS and Mapping Type B to start always at the first symbols of scheduled SLIV.
- Select between Configuration Type 1 and 2 . In Configuration type 1, the minimum resource element group in
frequency domain is one RE. In Configuration type 2, the minimum resource element group in frequency domain is
two consecutive REs.
- Select DM-RS Type A Position between pos2 and pos3 to set the PDSCH DM-RS position for mapping type A.
- Select DM-RS Additional Position to set the Position for additional DM-RS in DL.
- Select DM-RS Duration between Single and Double . Set Single when single-symbol DM-RS is used or Double
when double (two) symbols are used.
- Set Antenna Port to be used as reference for initial synchronization for DM-RS. Usable antenna port is determined
by Configuration Type and DM-RS Duration.
- Set Power Boosting in dB (relative) of the DMRS associated with the PDSCH physical channel relative to
PDSCH power.
NOTE
You need to make sure PDSCH DM-RS setting is accurately done to get the right analysis data. For more details
on setting, you can find it in the following location:
https://portal.3gpp.org/desktopmodules/Specifications/SpecificationDetails.aspx?specificationId=3213 and check
the latest 38.211 documentation.
f Tap to switch PT-RS to On or Off and when On, do the following steps:
- Select K
PT-RS
to set the PTRS period in subcarrier in the frequency domain between 2 and 4 .
- Select L
PT-RS
to
set the start PTRS symbol in time domain from the options: 1 , 2 , and 4 .
- Select Resource Element Offset to set PT-RS resource element offset from Offset00 , Offset01 , Offset10 , and
Offset11 .
- Select N
RNTI
to set the physical channel.
g Tap Summary to check all the parameters are accurately set. o the following steps:
- PDSCH Preview displays resources that are assigned PDSCH within BWP (X axis: symbol, Y axis: subcarrier).
h Tap the Done button if you finish all settings.
Setting limit
1 Tap the rectangle with value before color legend bar on the measurement screen.
2 Set a value for Minimum using the on-screen keyboard.
3 Tap the rectangle with value after color legend bar on the measurement screen.
2 Set a value for Maximum using the on-screen keyboard.