Anritsu 3GPP, Measurement Manual

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5-5 LTE Over-the-Air (OTA) Measurements LTE Signal Analyzer
5-16 PN: 10580-00234 Rev. Y 3GPP MG
5-5 LTE Over-the-Air (OTA) Measurements
Scanner, Tx Test, Mapping, and Carrier Aggregation are measurements taken over the air.
EMF measurements are available only with Option 444.
Antenna Status
The Antenna Status indicators, if any, are located in the bottom left corner of the instrument
display. They show the number of antennas detected and which one is currently being
measured. In OTA measurements, the Antenna Status is displayed when
Show Mod Results
is
On
for
Scanner
and
Tx Test
.
Scanner
The Scanner measurement scans for the presence of up to 6 cell IDs and the following
measurement values.
Cell ID, Sector ID, Group ID
Identifying information sent by the transmitter in the sync signal.
S-SS Power
Secondary Sync Signal power is displayed in dBm or Watts. The secondary sync signal is used
to obtain frame synchronization and cell identity. S-SS Power contains information needed
for cell search.
RSRP
Reference Signal Received Power provides the UE with essential information about the
strength of cells from which path loss can be calculated and used for determining optimum
power settings for operating networks. RSRP is used in both idle and connected states. RSRP
is used as a parameter in multi-cell scenarios.
RSRQ
Reference Signal Receive Quality provides additional information when RSRP is not
sufficient to make a reliable handover or cell reselection decision. RSRP is the ratio between
RSRP and RSSI measured in dB.
SINR
Signal-to-Interference-plus-Noise Ratio is measured in dB.
Dominance
Dominance is the ratio of the power for the largest signal to the sum of all other signals found,
measured in dB.
PBCH Modulation Results
The PBCH Modulation Results table is displayed when the
Show Mod Results
setting is set to
On. Refer to “OTA Scanner Menu” on page 5-39 . The displayed values are the same as
described under “Constellation” on page 5-9 .