LTE Signaling
R&S
®
CMW-KM5xx/-KS5xx
53
User Manual 1173.9628.02 ─ 16
2.2.13.2
Supported Number of RB / Position of First RB (UL)
In the uplink the position of the first allocated RB is freely selectable within the channel
bandwidth. The number of resource blocks is restricted by the maximum number of
RBs, depending on the channel bandwidth in the same way as for the downlink. Addi-
tionally the number of RBs is restricted by the following formula specified in 3GPP TS
36.211:
N
RB
= 2
i
x 3
j
x 5
k
, with i, j, k being non-negative integer values
You can also allocate no resource blocks at all (N
RB
= 0). As a result, the UE is not
allowed to use the PUSCH and must use the PUCCH instead, e.g. to send ACK/NACK
messages.
Example:
For a channel bandwidth of 3 MHz the following values are allowed in the uplink: 0, 1,
2, 3, 4, 5, 6, 8, 9, 10, 12, 15. Not allowed are 7, 11, 13 and 14.
2.2.13.3
Supported Transport Block Size Indices
The allowed transport block size indices depend on the modulation type as shown in
the following table.
Table 2-10: Range of transport block size index depending on modulation type
Modulation Type
QPSK
16-QAM
64-QAM
Indices for uplink channels
0 to 10
10 to 26
n.a.
Indices for downlink channels
0 to 9
9 to 15
15 to 26
2.2.14 CQI Channels
The CQI reporting tests specified in chapter 9 of 3GPP TS 36.521 require downlink sig-
nals with a specific CQI index value. For some tests, the CQI index value must be
static (for example reported median CQI value plus or minus one). For other tests, the
CQI index value must follow the wideband CQI value reported by the UE.
The LTE signaling application provides the following scheduling types for CQI tests:
●
Fixed CQI
●
Follow wideband CQI
●
Follow wideband PMI
●
Follow wideband CQI-RI
●
Follow wideband CQI-PMI-RI
The downlink channel for the individual scheduling types is described in the following
sections.
The uplink channel is identical to a user-defined uplink channel, see
General Description
深圳德标仪器
135-1095-0799
