9.14 CSI reporting of Narrowband IoT
36.1013GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TSUser Equipment (UE) radio transmission and reception
The requirements in this sub-clause are defined based on the simulation results with UE DL Category NB2 unless otherwise stated.
9.14.1 CQI reporting definition under AWGN conditions
9.14.1.1 Half-duplex FDD
The following requirements apply to UE Category NB2 capable of npdsch-16QAM-r17. For the parameters specified in Table 9.14.1.1-1, and using the downlink physical channels specified in C.3.6, the reported candidateRep value according to RC.33 FDD in Table A.4-1 shall be in the range of ±1 of the reported median more than 90% of the time. If the NPDSCH BLER using the transport format indicated by median candidateRep value is less than or equal to 0.1, the BLER using the transport format indicated by the (median candidateRep value + 1) shall be greater than 0.1. If the NPDSCH BLER using the transport format indicated by the median candidateRep value is greater than 0.1, the BLER using transport format indicated by (median candidateRep value – 1) shall be less than or equal to 0.1.
Table 9.14.1.1-1: Half-duplex FDD
|
Parameter |
Unit |
Test 1 |
|
|
Bandwidth |
kHz |
200 |
|
|
Operation mode |
Stand-alone |
||
|
Carrier type |
Non-anchor |
||
|
Number of NRS ports |
1 |
||
|
Propagation condition and antenna configuration |
AWGN (1 x 1) |
||
|
SNR (Note 2) |
dB |
10 |
11 |
|
dB[mW/15kHz] |
-88 |
-87 |
|
|
dB[mW/15kHz] |
-98 |
-98 |
|
|
Max number of HARQ transmissions |
1 |
||
|
NPDCCH repetition number |
subframe |
1 |
|
|
Rmax (npdcch-NumRepetitions-r13) |
subframe |
4 |
|
|
G (nPDCCH-startSF-USS-r13) |
subframe |
2 |
|
|
Scheduling delay field (IDelay) |
1 |
||
|
(ack-NACK-NumRepetitions-r13) |
1 |
||
|
ACK/NACK resource field |
0 |
||
|
NPDCCH reference channel |
R.NB.3 FDD |
||
|
(npdcch-Offset-USS-r13) |
0 |
||
|
CQI reporting period |
ms |
40 |
|
|
NPDSCH repetition number |
subframe |
1 |
|
|
Resource assignment field (ISF) (Note 4) |
3 |
||
|
downlinkBitmap-r13 and dl-Gap-r13 |
Not configured |
||
|
dl-GapNonAnchor-r13 and downlinkBitmapNonAnchor-r13 |
Not configured |
||
|
OCNG pattern |
NB.OP.1 |
||
|
Note 1: Reference measurement channel RC.33 FDD according to Table A.4-1 with one sided dynamic OCNG Pattern NB.OP.1 FDD as described in Annex A.5.3.1. For the subframes the reference measurement channel is not scheduled, NRS is transmitted with OCNG pattern NB.OP.1 FDD. Note 2: The minimum requirements shall be fulfilled for at least one of the two SNR(s) and the respective wanted signal input level. Note 3: MAC CE Downlink Channel Quality Report Command is triggered every 40 subframes, where NPDCCH scheduling MAC CE (NPDSCH) is transmitted in subframe n. UL grant is transmitted in subframe n+24. Note 4: Set the number of subframes (NSF) for NPDSCH to 4 for NPDSCH transmitting MAC CE Downlink Channel Quality Report Command. |
|||
9.14.1.2 TDD
The following requirements apply to UE Category NB2 capable of npdsch-16QAM-r17. For the parameters specified in Table 9.14.1.2-1, and using the downlink physical channels specified in C.3.6, the reported candidateRep value according to RC.33 TDD in Table A.4-1 shall be in the range of ±1 of the reported median more than 90% of the time. If the NPDSCH BLER using the transport format indicated by median candidateRep value is less than or equal to 0.1, the BLER using the transport format indicated by the (median candidateRep value + 1) shall be greater than 0.1. If the NPDSCH BLER using the transport format indicated by the median candidateRep value is greater than 0.1, the BLER using transport format indicated by (median candidateRep value – 1) shall be less than or equal to 0.1.
Table 9.14.1.2-1: TDD
|
Parameter |
Unit |
Test 1 |
|
|
Bandwidth |
kHz |
200 |
|
|
Operation mode |
Stand-alone |
||
|
Uplink downlink configuration (Note 4) |
4 |
||
|
Special subframe configuration (Note 5) |
4 |
||
|
Carrier type |
Non-anchor |
||
|
Number of NRS ports |
1 |
||
|
Propagation condition and antenna configuration |
AWGN (1 x 1) |
||
|
SNR (Note 2) |
dB |
10 |
11 |
|
dB[mW/15kHz] |
-88 |
-87 |
|
|
dB[mW/15kHz] |
-98 |
-98 |
|
|
Max number of HARQ transmissions |
1 |
||
|
NPDCCH repetition number |
subframe |
1 |
|
|
Rmax (npdcch-NumRepetitions-r13) |
subframe |
4 |
|
|
G (nPDCCH-startSF-USS-r13) |
subframe |
2 |
|
|
Scheduling delay field (IDelay) |
1 |
||
|
(ack-NACK-NumRepetitions-r13) |
1 |
||
|
ACK/NACK resource field |
0 |
||
|
NPDCCH reference channel |
R.NB.3 TDD |
||
|
(npdcch-Offset-USS-r13) |
0 |
||
|
CQI reporting period |
ms |
80 |
|
|
NPDSCH repetition number |
subframe |
1 |
|
|
Resource assignment field (ISF) (Note 6) |
3 |
||
|
downlinkBitmap-r13 and dl-Gap-r13 |
Not configured |
||
|
dl-GapNonAnchor-r13 and downlinkBitmapNonAnchor-r13 |
Not configured |
||
|
OCNG pattern |
NB.OP.1 |
||
|
Note 1: Reference measurement channel RC.33 TDD according to Table A.4-1 with one sided dynamic OCNG Pattern NB.OP.1 TDD as described in Annex A.5.3.1. For the subframes the reference measurement channel is not scheduled, NRS is transmitted with OCNG pattern NB.OP.1 TDD. Note 2: The minimum requirements shall be fulfilled for at least one of the two SNR(s) and the respective wanted signal input level. Note 3: MAC CE Downlink Channel Quality Report Command is triggered every 80 subframes, where NPDCCH scheduling MAC CE (NPDSCH) is transmitted in subframe n. UL grant is transmitted in subframe n+40. Note 4: As specified in Table 4.2-2 in TS 36.211 [4]. Note 5: As specified in Table 4.2-1 in TS 36.211 [4]. Note 6: Set the number of subframes (NSF) for NPDSCH to 4 for NPDSCH transmitting MAC CE Downlink Channel Quality Report Command. |
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