Content for TR 38.835 Word version: 18.0.1

1… 4… 5… 6 A B… B.1.2 B.1.3 B.1.4 B.1.5 B.1.6 B.1.7 B.1.8 B.1.9 B.1.10 B.2… B.2.2 B.2.3 B.2.4 B.2.5 B.2.6 B.2.7 B.2.8 B.2.9 B.2.10 B.2.11 B.2.12 B.2.13 B.2.14 B.2.15 B.2.16 B.2.17 B.2.18 C…

B.2.4 Two-stage CDRX On Duration
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B.2.4 Two-stage CDRX On Duration p. 66

This clause captures evaluation results for two-stage CDRX On Duration

Ericsson evaluated the two-stage DRX solution with multiple inner On Durations within the outer On Duration and compared its performance with that of R17 PDCCH monitoring adaptation.
vivo compared R17 PDCCH monitoring adaptation and the two-stage On-Duration by performance evaluations.

Table B.2.4-1: FR1, DL+UL, DU, VR30

source	data row index	Tdoc source	Power saving scheme	CDRX cycle (ms)	ODT (ms)	IAT (ms)	Load H/L	#UE /cell	floor (Capacity)	% of DL satisfied UE	% of UL satisfied UE	% of DL + UL satisfied UE	Capacity gain (%)	Mean PSG of all UEs (%)	Mean PSG of satisfied UEs (%)	Additional Assumptions
Ericsson	35	R1-2210922	Always On	-	-	-	H	8	8	-	-	90.1%	0.0%	-	-	Note1
Ericsson	38	R1-2210922	Matched CDRX	16.6	10	4	H	8	8	-	-	85.5%	-5.1%	7.2%	7.1%	Note1,2
Ericsson	40	R1-2210922	PDCCH skipping & matched CDRX	16.6	10	4	H	8	8	-	-	84.7%	-6.0%	7.6%	7.6%	Note1,2
Ericsson	41	R1-2210922	R17 SSSG switching (sparse SSSG:2 ms on / 2 ms off) & matched CDRX	16.6	10	4	H	8	8	-	-	66.0%	-26.7%	10.3%	10.3%	Note1,2
Ericsson	42	R1-2210922	R17 SSSG switching (sparse SSSG:1 ms on / 1 ms off) & matched CDRX	16.6	10	4	H	8	8	-	-	79.8%	-11.4%	10.7%	10.7%	Note1,2
Ericsson	43	R1-2210922	R17 SSSG switching (sparse SSSG: 1 ms on / 1 ms off) & PDCCH skipping & matched CDRX	16.6	10	4	H	8	8	-	-	79.9%	-11.3%	11.3%	11.2%	Note1,2
Ericsson	44	R1-2210922	Two-stage DRX & matched CDRX	outer DRX: 16.6; inner DRX: 4	outer ODT: 10; inner ODT: 2	4	H	8	8	-	-	80.2%	-11.0%	9.1%	9.1%	Note1,3
Ericsson	45	R1-2210922	Two-stage DRX & matched CDRX	outer DRX: 16.6; inner DRX: 2	outer ODT: 10; inner ODT: 1	4	H	8	8	-	-	81.5%	-9.5%	10.7%	10.7%	Note1,3
Ericsson	46	R1-2210922	Two-stage DRX & PDCCH skipping & matched CDRX	outer DRX: 16.6; inner DRX: 4	outer ODT: 10; inner ODT: 2	4	H	8	8	-	-	79.8%	-11.4%	9.5%	9.5%	Note1,3
Ericsson	47	R1-2210922	Two-stage DRX & PDCCH skipping & matched CDRX	outer DRX: 16.6; inner DRX: 2	outer ODT: 10; inner ODT: 1	4	H	8	8	-	-	80.7%	-10.4%	11.5%	11.5%	Note1,3
NOTE 1: the DL traffic has a second flow for audio with 30ms PDB NOTE 2: Matched CDRX cycle has (drx_offset=3, traffic_time_offset=2 ms, drx-LongCycle=16 ms) NOTE 3: Outer CDRX cycle has (drx_offset=3, traffic_time_offset=2 ms, drx-LongCycle=16 ms)

Based on the evaluation results in Table B.2.4-1, the following observations can be made:

For FR1, DL + UL joint evaluation, DU, high load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from Ericsson that:
- two-stage CDRX On Duration provides:
  - mean power saving gain of 10.20% in the range of 9.10% to 11.50% for all UEs
  - mean capacity gain of -10.58% in the range of -11.4% to -9.5%
- sparse PDDCH monitoring followed by SSSG switching as the performance reference provides:
  - mean power saving gain of 10.77% in the range of 10.30% to 11.30% for all UEs
  - mean capacity gain of -16.47% in the range of -26.7% to -11.3%

Table B.2.4-2: FR1, DL-only, DU, VR30

source	data row index	Tdoc source	Power saving scheme	CDRX cycle (ms)	ODT (ms)	IAT (ms)	Load H/L	#UE /cell	floor (Capacity)	% of satisfied UE	Capacity gain (%)	Mean PSG of all UEs (%)	Mean PSG of satisfied UEs (%)	Additional Assumptions
Ericsson	1	R1-2210922	Always On	-	-	-	H	8	8	91.7%	0.0%	0.0%	0.0%
Ericsson	4	R1-2210922	Matched CDRX	16.6	10	4	H	8	8	87.2%	-4.9%	10.5%	11.4%	Note 1
Ericsson	6	R1-2210922	PDCCH skipping & matched CDRX	16.6	10	4	H	8	8	87.3%	-4.8%	15.8%	16.0%	Note 1
Ericsson	7	R1-2210922	R17 SSSG switching (sparse SSSG: 2 ms on / 2 ms off) & matched CDRX	16.6	10	4	H	8	8	53.9%	-41.2%	15.5%	16.0%	Note 1
Ericsson	8	R1-2210922	R17 SSSG switching (sparse SSSG: 1 ms on / 1 ms off) & matched CDRX	16.6	10	4	H	8	8	78.4%	-14.5%	16.4%	16.5%	Note 1
Ericsson	9	R1-2210922	R17 SSSG switching (sparse SSSG: 1 ms on / 1 ms off) & PDCCH skipping & matched CDRX	16.6	10	4	H	8	8	78.9%	-14.0%	20.2%	20.4%	Note 1
Ericsson	10	R1-2210922	Two-stage DRX & matched CDRX	outer DRX: 16.6; inner DRX: 4	outer ODT: 10; inner ODT: 2	4	H	8	8	79.2%	-13.6%	14.8%	15.1%	Note 2
Ericsson	11	R1-2210922	Two-stage DRX & matched CDRX	outer DRX: 16.6; inner DRX: 2	outer ODT: 10; inner ODT: 1	4	H	8	8	80.2%	-12.5%	16.2%	16.6%	Note 2
Ericsson	12	R1-2210922	Two-stage DRX & PDCCH skipping & matched CDRX	outer DRX: 16.6; inner DRX: 4	outer ODT: 10; inner ODT: 2	4	H	8	8	78.6%	-14.3%	19.2%	19.4%	Note 2
Ericsson	13	R1-2210922	Two-stage DRX & PDCCH skipping & matched CDRX	outer DRX: 16.6; inner DRX: 2	outer ODT: 10; inner ODT: 1	4	H	8	8	80.4%	-12.3%	20.4%	20.6%	Note 2
Ericsson	18	R1-2210922	Always On	-	-	-	L	2	8	100%	0.0%	0.0%	0.0%
Ericsson	20	R1-2210922	Matched CDRX	16.6	10	4	L	2	8	100%	0.0%	12.8%	12.8%	Note 1
Ericsson	23	R1-2210922	PDCCH skipping & matched CDRX	16.6	10	4	L	2	8	100%	0.0%	22.5%	22.5%	Note 1
Ericsson	24	R1-2210922	R17 SSSG switching (sparse SSSG: 2 ms on / 2 ms off) & matched CDRX	16.6	10	4	L	2	8	82.9%	-17.1%	18.2%	18.2%	Note 1
Ericsson	25	R1-2210922	R17 SSSG switching (sparse SSSG: 1 ms on / 1 ms off) & matched CDRX	16.6	10	4	L	2	8	100%	0.0%	19.2%	19.2%	Note 1
Ericsson	26	R1-2210922	R17 SSSG switching (sparse SSSG: 1 ms on / 1 ms off) & PDCCH skipping & matched CDRX	16.6	10	4	L	2	8	100%	0.0%	26.6%	26.6%	Note 1
Ericsson	27	R1-2210922	Two-stage DRX & matched CDRX	outer DRX: 16.6; inner DRX: 4	outer ODT: 10; inner ODT: 2	4	L	2	8	100%	0.0%	16.7%	16.7%	Note 2
Ericsson	28	R1-2210922	Two-stage DRX & matched CDRX	outer DRX: 16.6; inner DRX: 2	outer ODT: 10; inner ODT: 1	4	L	2	8	100%	0.0%	19.0%	19.0%	Note 2
Ericsson	29	R1-2210922	Two-stage DRX & PDCCH skipping & matched CDRX	outer DRX: 16.6; inner DRX: 4	outer ODT: 10; inner ODT: 2	4	L	2	8	100%	0.0%	25.9%	25.9%	Note 2
Ericsson	30	R1-2210922	Two-stage DRX & PDCCH skipping & matched CDRX	outer DRX: 16.6; inner DRX: 2	outer ODT: 10; inner ODT: 1	4	L	2	8	100%	0.0%	27.0%	27.0%	Note 2
NOTE 1: Matched CDRX cycle has (drx_offset=3, traffic_time_offset=2 ms, drx-LongCycle=16 ms) NOTE 2: Outer CDRX cycle has (drx_offset=3, traffic_time_offset=2 ms, drx-LongCycle=16 ms)

Based on the evaluation results in Table B.2.4-2, the following observations can be made:

For FR1, DL only, DU, high load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from Ericsson that:
- two-stage CDRX On Duration provides:
  - mean power saving gain of 17.65% in the range of 4.80% to 20.40% for all UEs
  - mean capacity gain of -13.18% in the range of -14.30% to -12.30%
- sparse PDDCH monitoring followed by SSSG switching as the performance reference provides:
  - mean power saving gain of 17.37% in the range of 15.50% to 20.20% for all UEs
  - mean capacity gain of -23.23% in the range of -41.20% to -14.00%
For FR1, DL only, DU, low load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from Ericsson that:
- two-stage CDRX On Duration provides:
  - mean power saving gain of 22.15% in the range of 6.70% to 27.00% for all UEs
  - mean capacity gain of 0%
- sparse PDDCH monitoring followed by SSSG switching as the performance reference provides:
  - mean power saving gain of 21.33% in the range of 18.20% to 26.60% for all UEs
  - mean capacity gain of -5.70% in the range of 0.00% to -17.10%

Table B.2.4-3: FR1, DL-only, InH, VR30

source	Tdoc source	Power saving scheme	CDRX cycle (ms)	ODT (ms)	IAT (ms)	Load H/L	#UE /cell	floor (Capacity)	% of satisfied UE	Capacity gain (%)	Mean PSG of all UEs (%)	Mean PSG of satisfied UEs (%)	Additional Assumptions
vivo	R1-2211024	Always On	-	-	-	L	5	10	100%	0.0%	0.0%	-
vivo	R1-2211024	R17 PDCCH monitoring adaptation	16.67	8	4	L	5	10	100%	0.0%	23.36%	-	Note1,2
vivo	R1-2211024	R17 PDCCH monitoring adaptation	16.67	8	4	L	5	10	100%	0.0%	25.39%	-	Note1,3
vivo	R1-2211024	Two-stage CDRX	Outer CDRX: 16.67 Inner CDRX: 4	Outer CDRX: 10 Inner CDRX: 2	Outer CDRX: 4 Inner CDRX: 4	L	5	10	100%	0.0%	21.52%	-	Note4
vivo	R1-2211024	Always On	-	-	-	H	10	10	92.50%	0.0%	0.0%	-
vivo	R1-2211024	R17 PDCCH monitoring adaptation	16.67	8	4	H	10	10	92.22%	-0.3%	19.28%	-	Note1,2
vivo	R1-2211024	R17 PDCCH monitoring adaptation	16.67	8	4	H	10	10	88.52%	-4.3%	21.84%	-	Note1,3
vivo	R1-2211024	Two-stage CDRX	Outer CDRX: 16.67 Inner CDRX: 4	Outer CDRX: 10 Inner CDRX: 2	Outer CDRX: 4 Inner CDRX: 4	H	10	10	86.89%	-6.1%	16.36%	-	Note4
NOTE 1: PDCCH skipping is indicated in the DCI that schedules a dummy PDSCH after all the HARQ-ACK processes of transmissions have been completed NOTE 2: applying R17 sparse SSSG with PDCCH monitoring every 2 slots when DRX Onduration starts and switch to dense SSSG with PDCCH monitoring every 1 slot after detecting DCI scheduling XR traffic burst NOTE 3: applying R17 sparse SSSG with PDCCH monitoring every 4 slots when DRX Onduration starts and switch to dense SSSG with PDCCH monitoring every 1 slot after detecting DCI scheduling XR traffic burst NOTE 4: 4ms CDRX cycle and 2ms ODT for inner CDRX

Based on the evaluation results in Table B.2.4-3, the following observations can be made:

For FR1, DL only, InH, high load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from vivo that:
- two-stage CDRX On Duration provides:
  - power saving gain of 16.36% for all UEs
  - capacity gain of -6.1%
- sparse PDDCH monitoring followed by SSSG switching as the performance reference provides:
  - mean power saving gain of 20.56% in the range of 19.28% to 21.84% for all UEs
  - mean capacity gain of -2.3% in the range of -4.3% to -0.3%
For FR1, DL only, InH, low load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from vivo that:
- two-stage CDRX On Duration provides:
  - power saving gain of 21.52% for all UEs
  - mean capacity gain of 0.0%
- sparse PDDCH monitoring followed by SSSG switching as the performance reference provides:
  - mean power saving gain of 24.38% in the range of 23.36% to 25.39% for all UEs
  - mean capacity gain of 0.0%