LTE Multi Evaluation Measurement
R&S
®
CMW-KM5xx/-KS5xx
532
User Manual 1173.9628.02 ─ 16
Mean power in one subframe before the "Measure Subframe"
●
"SRS ON/OFF":
Mean power in the SRS period at the end of the "Measure Subframe"
For the parameters at the bottom of the view, see
chapter 3.2.6.14, "Common View
For query of the diagram and table contents via remote control, see:
●
chapter 3.5.3.22, "Power Dynamics Results (Traces)"
●
chapter 3.5.3.29, "Power Dynamics Results (Single Values)"
Signal configuration for general time mask
The "Measure Subframe" must be on and one subframe before and after the "Measure
Subframe" must be off.
However, it is recommended to configure two subframes off before and after the "Mea-
sure Subframe" (OFF OFF ON OFF OFF). This guarantees that the measured "OFF
Power (before)" is not falsified by power contributions of a preceding ON subframe
ramped down too slowly, or the "OFF Power (after)" by a subsequent ON subframe
ramped up too early.
The trace sections below -1000 µs and above 2000 µs belong to the second sub-
frames before and after the "Measure Subframe". In the figure above they are on.
Signal configuration for SRS time masks
The "Measure Subframe" and one subframe after the "Measure Subframe" must be on.
At the end of the "Measure Subframe", there must be an SRS. Depending on the time
mask, it must be a UE-specific SRS (SRS ON, UE transmitting) or a cell-specific SRS
(SRS OFF, another UE assumed to transmit).
For FDD, you can achieve this SRS configuration with the combined signal path sce-
nario. In the signaling application, enable SRS and use the default SRS subframe con-
figuration and SRS configuration index. In the measurement, set the "Measure Sub-
frame" to subframe 0 for SRS ON and to subframe 5 for SRS OFF.
The following figures show measurement results for the PUCCH / PUSCH / SRS time
mask and the SRS blanking time mask.
General Description
深圳德标仪器
135-1095-0799
