Rohde & Schwarz R&S CMW-KM300, Руководство пользователя, Страница: 27 / 388

NB-IoT Signaling
R&S
®
CMW-KM300/-KS300
27 User Manual 1178.5689.02 ─ 06
Repetitions
User-defined scheduling supports the following numbers of repetitions:
●
UL: 1, 2, 4, 8, 16, 32, 64, 128
●
DL: 1, 2, 4, 8, 16, 32, 64, 128, 192, 256, 384, 512, 768, 1024, 1536, 2048
Maximal possible throughput
All generated physical DL channels and signals share resources provided on single
carrier (see
Chapter 2.2.6, "Physical DL Channels and Signals" , on page 20). There-
fore, the possible throughput of user data (at NPDSCH) is smaller than the theoretical
peak value of 126
kbps.
Data rates depend on the selected scheduling pattern, refer to "Pattern" on page 77.
For the maximal possible throughput, configure the parameters as follows:
1. Enable HARQ
2. Set No. of HARQ Processes = 2
3. Set Scheduling Type = "User defined"
4. Set Pattern = "Alternating DL/UL"
5. In DL, set MCS Index = 13
6. In DL, set the number of "Subframes" to 10, see Resource Units, Subframes
7. In UL, set the number of "Subcarriers" to 12, see Subcarriers, Start Subcarrier
8. In UL, set MCS Index = 13
9. In UL, set the number of "Resource Units" to 10, see Resource Units, Subframes
2.2.11 Operating Bands
The carrier frequencies for NB-IoT signals are defined in 3GPP TS 36.101. Each oper-
ating band contains carrier frequencies identified by channel numbers (EARFCN, E-
UTRA absolute radio frequency channel number). The assignment between channel
numbers N and carrier center frequencies F is defined as:
N = 10 x (F - F
Offset
)/MHz + N
Offset
The tables in this section provide an overview of all supported operating bands. For
each band, they list the offset frequencies F
Offset
, the channel number offsets N
Offset
, the
channel numbers N and the carrier center frequencies F.
The table for uplink signals lists also the separation between uplink carrier frequencies
and downlink carrier frequencies.
The RF frequencies are configured according to the tables in this section, independent
of the operation mode. In the guard-band operation mode and the in-band operation
mode, there are channel raster offsets added to the configured RF frequencies, see
Chapter 2.2.5, "Operation Modes" , on page 18.
General Description
深圳德标仪器
135-1095-0799