LTE Signaling
R&S
®
CMW-KM5xx/-KS5xx
72
User Manual 1173.9628.02 ─ 16
The view displays two types of tables for each downlink stream:
●
The "HARQ per Transmissions" table lists the initial transmissions and all retrans-
missions. Column 1 indicates the initial transmissions (first redundancy version),
column 2 the first retransmission (second redundancy version), column 3 the sec-
ond retransmission (third redundancy version), and so on.
For each transmission type the number of sent subframes, received ACK, received
NACK and DTX (neither ACK nor NACK received) is displayed.
●
The "HARQ per Subframe" table lists the ACK, NACK and DTX received in the
individual subframes of the radio frame. So column 0 indicates the ACK/
NACK/DTX received in the first subframe of a radio frame, column 9 the ACK/
NACK/DTX received in the last subframe of a radio frame.
You can display all results in the tables as absolute numbers or as percentages. To
toggle the presentation, use the softkey > hotkey combination "Display" > "Absolute /
Relative".
A relative "Sent" value indicates the percentage of the absolute "Sent" value relative to
the total number of sent subframes (sum of the table row). A relative ACK, NACK or
DTX value indicates the percentage of the absolute value, relative to the sum of the
absolute ACK, NACK and DTX values in the table column.
At the bottom of the view some HARQ settings are displayed for information, in addi-
tion to the view-independent GUI elements. For a description see
2.2.19.8
Common View Elements
Each view displays at least one of the following elements to indicate the progress of
the measurement:
●
Subframes
:
This value indicates the number of already processed subframes. For single-shot
measurements with fixed length, also the total number of subframes to be pro-
cessed is displayed.
For FDD all downlink subframes are counted, scheduled subframes as well as sub-
frames without allocated resource blocks. For TDD special subframes and uplink
subframes are also counted.
A scheduled downlink subframe that is sent via several downlink streams in paral-
lel is counted as one subframe.
●
Scheduled
:
Displays the number of already measured subframes (scheduled downlink sub-
frames). This number equals the sum of the absolute values for ACK, NACK and
DTX for one downlink stream.
Examples for a single-shot measurement with fixed length:
–
FDD: You set the no. of subframes to 10000, schedule every fifth subframe and
use two downlink streams. Thus 2000 subframes are scheduled. The UE is
expected to send 2000 responses per stream, 4000 in total. At the end of the
measurement the parameter "Subframes" displays 10000/10000 and the
parameter "Scheduled" displays 2000.
–
TDD: You set the no. of subframes to 10000. You use UL/DL configuration 1
and transfer downlink data via subframe 0, 1, 4, 6 and 9 (subframe 5 not
General Description
深圳德标仪器
135-1095-0799
