9.3.3 Frequency-selective interference

36.1013GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TSUser Equipment (UE) radio transmission and reception

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

The accuracy of sub-band channel quality indicator (CQI) reporting under frequency selective interference conditions is determined by a percentile of the reported differential CQI offset level +2 for a preferred sub-band, and the relative increase of the throughput obtained when transmitting on a randomly selected sub-band among the sub-bands with the highest reported differential CQI offset level the corresponding transport format compared to the case for which a fixed format is transmitted on any sub-band in set S of TS 36.213 [6]. The purpose is to verify that preferred sub-bands are used for frequently-selective scheduling under frequency-selective interference conditions.

9.3.3.1 Minimum requirement PUSCH 3-0 (Cell-Specific Reference Symbol)

9.3.3.1.1 FDD

For the parameters specified in Table 9.3.3.1.1-1, and using the downlink physical channels specified in Annex C.3.2, the minimum requirements are specified in Table 9.3.3.1.1-2 and by the following

a) a sub-band differential CQI offset level of +2 shall be reported at least  % for at least one of the sub-bands of full size at the channel edges;

b) the ratio of the throughput obtained when transmitting on a randomly selected sub-band among the sub-bands with the highest differential CQI offset level the corresponding TBS and that obtained when transmitting the TBS indicated by the reported wideband CQI median on a randomly selected sub-band in set S shall be ≥ ;

The requirements only apply for sub-bands of full size and the random scheduling across the sub-bands is done by selecting a new sub-band in each TTI for FDD, each available downlink transmission instance for TDD. Sub-bands of a size smaller than full size are excluded from the test.

Table 9.3.3.1.1-1 Sub-band test for single antenna transmission (FDD)

Parameter		Unit	Test 1	Test 2
Bandwidth		MHz	10 MHz	10 MHz
Transmission mode			1 (port 0)	1 (port 0)
Downlink power allocation		dB	0	0
		dB	0	0
	σ	dB	0	0
for RB 0…5		dB[mW/15kHz]	-102	-93
for RB 6…41		dB[mW/15kHz]	-93	-93
for RB 42…49		dB[mW/15kHz]	-93	-102
		dB[mW/15kHz]	-94	-94
Max number of HARQ transmissions			1
Propagation channel			Clause B.2.4 with s, a = 1, Hz
Reporting interval		ms	5
Antenna configuration			1 x 2
CQI delay		ms	8
Reporting mode			PUSCH 3-0
Sub-band size		RB	6 (full size)
Note 1: If the UE reports in an available uplink reporting instance at subframe SF#n based on CQI estimation at a downlink subframe not later than SF#(n-4), this reported subband or wideband CQI cannot be applied at the eNB downlink before SF#(n+4) Note 2: Reference measurement channel RC.3 FDD according to Table A.4-1 with one/two sided dynamic OCNG Pattern OP.1/2 FDD as described in Annex A.5.1.1/2.

Table 9.3.3.1.1-2 Minimum requirement (FDD)

	Test 1	Test 2
 [%]	60	60
	1.6	1.6
UE Category	≥1	≥1

9.3.3.1.2 TDD

For the parameters specified in Table 9.3.3.1.2-1, and using the downlink physical channels specified in Annex C.3.2, the minimum requirements are specified in Table 9.3.3.1.2-2 and by the following

a) a sub-band differential CQI offset level of +2 shall be reported at least  % for at least one of the sub-bands of full size at the channel edges;

Table 9.3.3.1.2-1 Sub-band test for single antenna transmission (TDD)

Parameter		Unit	Test 1	Test 2
Bandwidth		MHz	10 MHz	10 MHz
Transmission mode			1 (port 0)	1 (port 0)
Downlink power allocation		dB	0	0
		dB	0	0
	σ	dB	0	0
Uplink downlink configuration			2
Special subframe configuration			4
for RB 0…5		dB[mW/15kHz]	-102	-93
for RB 6…41		dB[mW/15kHz]	-93	-93
for RB 42…49		dB[mW/15kHz]	-93	-102
		dB[mW/15kHz]	-94	-94
Max number of HARQ transmissions			1
Propagation channel			Clause B.2.4 with s, a = 1, Hz
Antenna configuration			1 x 2
Reporting interval		ms	5
CQI delay		ms	10 or 11
Reporting mode			PUSCH 3-0
Sub-band size		RB	6 (full size)
ACK/NACK feedback mode			Multiplexing
Note 1: If the UE reports in an available uplink reporting instance at subframe SF#n based on CQI estimation at a downlink subframe not later than SF#(n-4), this reported subband or wideband CQI cannot be applied at the eNB downlink before SF#(n+4). Note 2: Reference measurement channel RC.3 TDD according to table A.4-1 with one/two sided dynamic OCNG Pattern OP.1/2 TDD as described in Annex A.5.2.1/2.

Table 9.3.3.1.2-2 Minimum requirement (TDD)

	Test 1	Test 2
 [%]	60	60
	1.6	1.6
UE Category	≥1	≥1