Slot Summary (5G NR/5G-Advanced)
There are two types of traces in the Trace > Data > Demod and MIMO Multiple Input, Multiple Output: A physical layer (PHY) configuration in which both transmitter and receiver use multiple antennas. menus that display component carrier data: CCn (component carrier is fixed), and Selected Display CC (component carrier is dynamically selected using the Display parameter). See About Per-Carrier Trace Types for more information.
The trace shows the reference component carrier's summary data for the channels that are present in the Measurement Interval, organized into BWP/subframe/slot groupings.
Slot Summary is a type of Matrix Table that provides selectable column visibility and copy/paste and export functionality to share rows of content or complete tables to applications like email, text editing or spreadsheet programs.
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Not visible by default To make visible, right-click any column heading and select Column Visibility... |
Not visible by default To make visible, right-click any column heading and select Column Visibility... |
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| BWP / Frame / Sf / Slot / Mu | Channel Name | BWP ID | Subframe Index | Slot Index | RNTI | Physical Channel | User | Part | Layer | Frame Index | Numerology | Logical Slot Index | EVM Error vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format. (%rms) | SINR Signal to (Interference + Noise) ratio (dB) | Power per RE (dBm deciBels referenced to a milliWatt: dB relative to 1 milliwatt dissipated in the nominal input impedance of the analyzer) | Power Boosting (dB) | Modulation | Num. of RBs | CRC Cyclic Redundancy Check | Peak EVM (%) | Peak EVM Sym Index | Peak EVM Subcar Index |
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BWP / Frame / Sf / Slot / Mu displays BWP ID, Frame Index, Subframe Index, Slot Index and Numerology Index (displayed as "Mun"), grouped by slot. For the SSB channel, "SSB" is displayed instead of BWP ID. |
Channel Name is a unique, but arbitrary reference to a Slot Summary row that is derived from Physical Channel, User, Part and Layer as applicable. Possible names include: Downlink:
Uplink:
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BWP ID displays the ID number (or name) of the bandwidth part that is associated with the row's channel. The same value is shown in the "BWP" field within the BWP / Frame / Sf / Slot / Mu column. |
Subframe Index displays the channel's subframe index. The same value is shown in the "Sf" field within the BWP / Frame / Sf / Slot / Mu column. |
Slot Index displays the channel's slot index. The same value is shown in the "Slot" field within the BWP / Frame / Sf / Slot / Mu column. |
RNTI shows the Radio Network Temporary Identifier (RNTI) for the channel. |
Physical channels include:
PSS SSS PBCH PDCCH PDSCH PUCCH PUSCH CSI-RS SRS DC |
When there is a single user, the default user number is 0. Rows without user data are denoted with '***'. |
Some physical channels have multiple parts. Physical channel parts include:
Data DMRS PTRS |
Rows without layer data are denoted with '***'. |
Frame Index displays the channel's frame index. The same value is shown in the "Frame" field within the BWP / Frame / Sf / Slot / Mu column. |
Numerology displays the channel's numerology index. The same value is shown in the "Mu" field within the BWP / Frame / Sf / Slot / Mu column (without the "Mu"). |
Slot Index displays the logical slot index. This value is a multiple of the Slot Index and the "Slot" field within the BWP / Frame / Sf / Slot / Mu column. |
EVM is the per-layer RMS EVM after demodulation. The Report EVM in dB parameter affects the units of this data result. |
SINR is the signal-to-noise and interference ratio for the channel. |
Power is the per-subcarrier power received at the reference measurement channel, averaged over all the subcarriers belonging to the physical channel. |
Power Boosting is the amount of power boosting applied to the channel using the channel's Power Boosting parameter. |
Mod. Fmt. is the modulation format of the channel. The modulation format for Non-alloc signals is not shown.
BPSK_45Deg QPSK Quadrature phase shift keying QAM16 QAM64 QAM256 BPSK_PI/2 Z-Chu |
Num. of RBs shows the number of resource blocks (1 RB x 1 slot) within the Measurement Interval that contain subcarriers belonging to the channel. Num. of RBs is not shown for Non-alloc signals. |
CRC displays the CRC pass/fail result for channels that are decoded. See Decode Tab for more information. Rows with channels that are not decoded are denoted with '***'. Decodable channels include:
PBCH PDCCH PDSCH PUCCH PUSCH |
Peak EVM is the per-slot per-channel peak EVM. The location of the layer's peak EVM is shown in the Peak EVM Sym Index and Peak EVM Subcar Index columns. The Report EVM in dB parameter affects the units of this data result. |
Peak EVM Sym Index (with Peak EVM Subcar Index) display the location (symbol and subcarrier) of the per-slot per-channel Peak EVM. |
Peak EVM Subcar Index (with Peak EVM Sym Index) display the location (subcarrier and symbol) of the per-slot per-channel Peak EVM. |
Trace Color coding Scheme
A multi-color coding scheme is used to make it easy to visually identify common symbols, subcarriers, and data results within various OFDM Orthogonal Frequency Division Multiplexing: OFDM employs multiple overlapping radio frequency carriers, each operating at a carefully chosen frequency that is Orthogonal to the others, to produce a transmission scheme that supports higher bit rates due to parallel channel operation. OFDM is an alternative tranmission scheme to DSSS and FHSS. Traces. This makes cross trace data comparisons and analysis easier to accomplish. Different colors are assigned to symbols representing elements including: PSS/SSS/PBCH/PBCH_DMRS/PDSCH/PDSCH_DMRS/PUSCH/PUSCH_DMRS/PUCCH/PUCCH_DMRS. Some common color scheme Traces include: Error Vector Spectrum, Error Vector Time, OFDM Meas, Frame Summary and Slot Summary trace data.
The 5G NR color scheme has been simplified to help make visual sense of a complex standard. The default color assignment for 5G NR follows these general guidelines:
- DMRS and PTRS signals
- PTRS and DMRS signals generally are generally assigned cooler colors (greens, blues).
- All DMRS signals share a common color. You can distinguish between DMRS signals using markers, but each DMRS is also visually distinguished by the physical channel in which it is located.
- All PTRS signals share a common color. You can distinguish between PTRS signals using markers, but each PTRS is also visually distinguished by the physical channel in which it is located.
- Physical channels (PDCCH, PDSCH, PUCCH, PUSCH, etc.)
- Physical channels are generally assigned warmer colors (yellows, oranges, reds)
- Each physical channel type has an assigned group of colors. For channel collections (multiple channels of the same type), the display will rotate through a group of three similar but distinct colors to distinguish between each channel in the collection. For example, if a signal contains 6 PDSCHs (PDSCH0-5), PDSCH0, PDSCH1 and PDSCH2 will each have similar but uniquely different color assignments. The same colors will be repeated for PDSCH3, PDSCH4 and PDSCH5.
You can also customize and re-assign Trace colors schemes, see the Display Preferences Color tab (click tab and select a new color for the active Mod Type element).
See Also
