Content for  TR 38.835  Word version:  18.0.1

This clause captures evaluation results for enhanced CDRX based on semi-static periodicity alignment between CDRX and XR traffic. The following evaluations were provided by companies:

• Ericsson and Intel evaluated configuring shifts for the start offset of CDRX On Duration and a number of DRX cycles after which the shifts should be added.
• Huawei evaluated configuring multiple start offsets for multiple On Durations within each CDRX cycle to align with multiple XR data arrivals.
• vivo evaluated multiple DRX configurations with different drx-StartOffset values.
• vivo evaluated one DRX cycle can contain multiple DRX On Durations based on single DRX configuration.
• Ericsson, vivo, OPPO, CATT, Intel, ZTE and Nokia evaluated the CDRX cycle pattern with multiple cycle values (e.g., {16ms, 17ms, 17ms} for 60fps XR video).
• ZTE, MediaTek and Qualcomm evaluated uniform non-integer number CDRX cycles with quantization operations in DRX formulas.
• ZTE evaluated multiple CDRX configurations with staggered offsets to align with multiple XR data arrivals.

Based on the evaluation results in Table B.2.1-1, 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:
  • Semi-static alignment provides:
    • mean power saving gain of 7.4% in the range of 7.2% to 7.6% for all UEs
    • mean capacity gain of -4.6% in the range of -5.1% to -4.1%%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 4.35% in the range of 2.6% to 6.1% for all UEs
    • mean capacity gain of -7.30% in the range of -11% to -3.6%

Based on the evaluation results in Table B.2.1-2, the following observations can be made.

• For FR1, DL + UL joint evaluation, InH, high load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from ZTE that:
  • Semi-static alignment provides:
    • mean power saving gain of 23.8% in the range of 24% to 23.90% for all UEs
    • mean capacity gain of -3.33% in the range of -3.33% to -3.33%
  • R15 CDRX as the performance reference provides:
    • mean power saving gain of 10.28% in the range of 6.65% to 13.9% for all UEs
    • mean capacity gain of -7.75% in the range of -12.2% to -3.33%

Based on the evaluation results in Table B.2.1-3, the following observations can be made.

• For FR1, DL only evaluation, DU, high load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from OPPO, Huawei, Qualcomm, Ericsson and Intel that:
  • semi-static alignment provides:
    • mean power saving gain of 8.36% in the range of 3.92% to 18.72% for all UEs
    • mean capacity gain of -2.05% in the range of -5.10% to 0.80%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 5.68% in the range of 3.23% to 10.4% for all UEs
    • mean capacity gain of -7.61% in the range of -14.70% to -1.60%
• For FR1, DL only evaluation, DU, high load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from Qualcomm that:
  • semi-static alignment + R17 PDCCH monitoring adaptation provides:
    • mean power saving gain of 27.28% in the range of 24.5% to 30.1% for all UEs
    • mean capacity gain of -4.00% in the range of -7.60% to -2.00%
  • R15/16 CDRX + R17 PDCCH monitoring adaptation as the performance reference provides:
    • mean power saving gain of 28.1% in the range of 25.7% to 30.6% for all UEs
    • mean capacity gain of -67.68% in the range of -84.80% to -49.70%
• For FR1, DL only evaluation, DU, low load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from Ericsson that:
  • semi-static alignment provides:
    • mean power saving gain of 12.65% in the range of 12.50% to 12.80% for all UEs
    • capacity gain of 0%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 8.60% in the range of 4.80% to 12.40% for all UEs
    • capacity gain of 0%
• For FR1, DL only evaluation, DU, high load, jitter off, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from Intel that:
  • semi-static alignment provides:
    • mean power saving gain of 9.46% in the range of 8.37% to 10.54% for all UEs
    • capacity gain of 0.0%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 3.96% in the range of 3.13% to 4.79% for all UEs
    • mean capacity gain of -3.8% in the range of -3.3% to -4.3%

Based on the evaluation results in Table B.2.1-4, the following observations can be made:

• For FR1, DL only evaluation, DU, high load, CG 30Mbps traffic at 60fps and 15ms PDB, it is observed from MediaTek and Intel that:
  • semi-static alignment provides:
    • mean power saving gain of 7.22% in the range of 4.56% to 9.90% for all UEs
    • mean capacity gain of -0.70% in the range of -1.30% to -0.3%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 4.42% in the range of 3.23% to 5.40% for all UEs
    • mean capacity gain of -2.33% in the range of -3.5% to -1.5%
• For FR1, DL only evaluation, DU, high load, jitter off, CG 30Mbps traffic at 60fps and 15ms PDB, it is observed from Intel that:
  • semi-static alignment provides:
    • mean power saving gain of 9.46% in the range of 8.37% to 10.54% for all UEs
    • capacity gain of 0%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 3.96% in the range of 3.13% to 4.79% for all UEs
    • mean capacity gain of -2.0% in the range of -1.5% to -2.5%

Based on the evaluation results in Table B.2.1-5, the following observations can be made:

• For FR1, DL only evaluation, InH, high load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from ZTE, vivo, CATT and Nokia that:
  • semi-static alignment provides:
    • mean power saving gain of 23.05% in the range of 9.30% to 34% for all UEs with
    • mean capacity gain of -28.54% in the range of -100% to -0.60%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 10.67% in the range of 3.46% to 18.70% for all UEs with
    • mean capacity gain of -27.63% in the range of -100% to -0.70%
• For FR1, DL only evaluation, InH, low load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from vivo that:
  • semi-static alignment provides:
    • power saving gain of 13.05% for all UEs with
    • capacity gain of 0%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 11.89% in the range of 3.67% to 22.17% for all UEs with
    • mean capacity gain of -26.30% in the range of -88.3% to 0%

Based on the evaluation results in Table B.2.1-6, the following observations can be made:

• For FR2, DL only evaluation, InH, high load, jitter off, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from Qualcomm that:
  • semi-static alignment provides:
    • mean power saving gain of 8.98% in the range of 0.30% to 18.93% for all UEs
    • capacity gain of 0%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 12.53% in the range of 0.29% to 28.60% for all UEs
    • mean capacity gain of -51.10% in the range of -100% to 0%
• For FR2, DL only evaluation, InH, high load, VR 30Mbps traffic at 60fps and 10ms PDB, it is observed from Qualcomm that:
  • semi-static alignment provides:
    • mean power saving gain of 11.94% in the range of 2.43% to 25.10% for all UEs
    • mean capacity gain of -26.30% in the range of -70.00% to -2.2%
  • R15/16 CDRX as the performance reference provides:
    • mean power saving gain of 14.06% in the range of 4.10% to 28.44% for all UEs
    • mean capacity gain of -57.4% in the range of -100% to -27.8%

Based on the evaluation results in Table B.2.1-7, the following observations can be made:

• For FR1, DL only evaluation, InH, high load, CG 30Mbps traffic at 60fps and 15ms PDB, it is observed from Nokia that:
  • semi-static CDRX periodicity alignment provides:
    • power saving of 16.00%
    • capacity gain of -55.6%
  • R15/16 CDRX provides:
    • mean power saving gain of 13.30% for all UEs
    • capacity gain of -33.3%