Content for TR 38.835 Word version: 18.0.1

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B.2.9 Dynamic grant enhancement with XR-specific pre-scheduling
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B.2.9 Dynamic grant enhancement with XR-specific pre-scheduling p. 92

This clause captures evaluation results for dynamic grant enhancement with XR-specific pre-scheduling:

CATT evaluated the pre-configured XR-specific PDCCH monitoring cycle and monitoring window disassociated with C-DRX which is aligned with the periodic XR packet generation cycle. UE is allowed to monitor PDCCH for XR-specific PDCCH monitoring cycle at both DRX ON and OFF. CATT also evaluated multicarrier solutions with one carrier for XR service and the second carrier for eMBB service.

Table B.2.9-1: FR1, DL-only, InH, 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
CATT	1	R1-2211174	Baseline: DG scheduling and UE always-on	-	-	-	H	12	12	95.8%	0.0%	0.0%	-
CATT	2	R1-2211174	DG scheduling with C-DRX	16	12	4	H	12	12	90.0%	-6.1%	8.0%	-
CATT	3	R1-2211174	Semi-static C-DRX enhancement	17/17/16	8	4	H	12	12	0.0%	-100.0%	25.5%	-
CATT	3	R1-2211174	Semi-static C-DRX enhancement	17/17/16	8	4	H	12	12	0.0%	-100.0%	19.0%	-	Note1
CATT	9	R1-2211174	Dynamic grant enhancement with XR-specific pre-scheduling scheme 1: Pre-scheduling DG window (16, 12)	16	12	0	H	12	12	90.0%	-6.1%	11.7%	-
CATT	9	R1-2211174	Dynamic grant enhancement with XR-specific pre-scheduling scheme 1: Pre-scheduling DG window (16, 12)	16	12	0	H	12	12	90.0%	-0.0%	3.8%	-	Note1
CATT	10	R1-2211174	Dynamic grant enhancement with XR-specific pre-scheduling scheme 2: Dynamic grant enhancement with XR-specific pre-scheduling with non-scheduling PDCCH skipping indication	16	12	0	H	12	12	89.7%	-7.0%	22.4%	-
CATT	10	R1-2211174	Dynamic grant enhancement with XR-specific pre-scheduling scheme 2: Dynamic grant enhancement with XR-specific pre-scheduling with non-scheduling PDCCH skipping indication	16	12	0	H	12	12	89.7%	-0.9%	15.7%	-	Note1
CATT	11	R1-2211174	Dynamic grant enhancement with XR-specific pre-scheduling scheme 3: Pre-scheduling DG window (16, 12) with go-to-sleep	16	12	0	H	12	12	90.0%	-6.1%	24.0%	-
CATT	11	R1-2211174	Dynamic grant enhancement with XR-specific pre-scheduling scheme 3: Pre-scheduling DG window (16, 12) with go-to-sleep	16	12	0	H	12	12	90.0%	-0.0%	17.4%	-	Note1
CATT	12	R1-2211174	Dynamic grant enhancement with XR-specific pre-scheduling scheme 4: Pre-scheduling DG window (16, 12) with PDCCH skipping and go-to-sleep	16	12	0	H	12	12	89.7%	-7.0%	29.4%	-
CATT	12	R1-2211174	Dynamic grant enhancement with XR-specific pre-scheduling scheme 4: Pre-scheduling DG window (16, 12) with PDCCH skipping and go-to-sleep	16	12	0	H	12	12	89.7%	-0.9%	23.3%	-	Note1
NOTE 1: PSG is calculated w.r.t. DG scheduling with C-DRX

Based on the evaluation results in Table B.2.9-1, the following observations can be made:

For FR1, DL only evaluation, InH, high load, VR 30Mbps traffic at 60fps with 10ms PDB, it is observed from CATT that:
- dynamic grant enhancement with XR-specific pre-scheduling scheme could obtain:
  - mean power saving gain of 21.88% in the range of 11.7% to 29.40%
  - mean capacity gain of -6.55% in the range of -7.00% to -6.10%
- semi-static C-DRX enhancement scheme with (17/17/16, 8, 4) as the performance reference obtains:
  - mean power saving gain of 22.50% in the range of 19.00% to 25.50%
  - mean capacity gain of -100%
- DG scheduling with C-DRX as the performance reference obtains:
  - mean power saving gain of 15.05% in the range of 3.8% to 23.3%
  - mean capacity gain of -0.45%

Table B.2.9-2: FR1, DL-only, multi-carrier, InH, VR30 + IM

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 (%)	Additional Assumptions
CATT	1	R1-2211174	Baseline: DG scheduling and UE always-on	-	-	-	H	12	12	95.8%	0.00%	0.0%
CATT	3	R1-2211174	Enhanced C-DRX	16/17/17	8	4	H	12	12	0.0%	-100.00%	19.0%	Note1,3
CATT	27	R1-2211174	Enhanced C-DRX	16/17/17	8	4	H	12	12	-	-	27.4%	Note2,3
CATT	12	R1-2211174	Dynamic grant enhancement with XR-specific pre-scheduling window (16, 12) with PDCCH skipping and go-to-sleep	-	-	-	H	12	12	89.2%	-0.45%	23.3%	Note1,3
CATT	26	R1-2211174	C-DRX for IM	320	10	80	H	12	12	-	-	87.2%	Note2,3
NOTE 1: first carrier for XR service NOTE 2: second carrier for eMBB service NOTE 3: baseline is DG scheduling with C-DRX(16, 12, 4) and Rel-17 PDCCH skipping scheme

Based on the evaluation results in Table B.2.9-2, the following observations can be made:

For FR1, DL only evaluation, InH, high load, multi-carrier, VR 30Mbps traffic at 60fps with 10ms PDB, it is observed from CATT that:
- Dynamic grant enhancement with XR-specific pre-scheduling scheme for XR traffic carrier and IM traffic carrier provides:
  - mean power saving gain of 23.3% for the XR traffic carrier
  - mean power saving gain of 87.2% for the IM traffic carrier
  - mean capacity gain of -0.45% for the XR traffic carrier
- enhanced C-DRX (16/17/17, 8, 4) as performance reference provides:
  - mean power saving gain of 19.0% for the XR traffic carrier
  - mean power saving gain of 27.4% for the IM traffic carrier
  - mean capacity gain of -100% for the XR traffic carrier

When XR and IM traffic transmitted in different carriers, the semi-static C-DRX enhancement scheme with (16/17/17, 8, 4) degrade 59.8% PSG of carrier with IM traffic compared with that of dynamic grant enhancement with XR-specific pre-scheduling scheme.