LTE Signaling
R&S
®
CMW-KM5xx/-KS5xx
148
User Manual 1173.9628.02 ─ 16
Power Ramping Step ← PRACH
Specifies the transmit power difference between two consecutive preambles. This
value is broadcasted to the UE.
If you set the step size to 0 dB, the preamble power is kept constant by the UE. This
allows you to use a constant expected nominal power setting during a PRACH mea-
surement.
Remote command:
Configuration Index ← PRACH
Sets the PRACH configuration index. It defines the preamble format and other PRACH
signal properties, e.g. which resources in the time domain are allowed for transmission
of preambles. This value is broadcasted to the UE.
There are separate settings for FDD and TDD (if both R&S CMW-KS500 and R&S
CMW-KS550 are available). The values allowed for TDD depend on the UL-DL config-
uration as listed in the command description.
For details see 3GPP TS 36.211, section 5.7.1 "Time and frequency structure".
Remote command:
Frequency Offset ← PRACH
The frequency offset is used by the UE to calculate the location of the six preamble
Resource Blocks (RB) within the channel bandwidth. The value is broadcasted to the
UE.
For details see "prach-FrequencyOffset" in 3GPP TS 36.211, section 5.7.1 "Time and
frequency structure".
Remote command:
Logical Root Sequ.Idx ← PRACH
Specifies the logical root sequence index to be used by the UE for generation of the
preamble sequence. The value is broadcasted to the UE as
RACH_ROOT_SEQUENCE.
For details see 3GPP TS 36.211, section 5.7.2 "Preamble sequence generation".
Remote command:
Zero Corr. Zone Conf. ← PRACH
The zero correlation zone config determines which N
CS
value of an N
CS
set has to be
used by the UE for generation of the preamble sequence. The value is broadcasted to
the UE.
For details see "zeroCorrelationZoneConfig" in 3GPP TS 36.211, section 5.7.2 "Pre-
amble sequence generation".
Remote command:
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