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Summary of Agreements by Topic

1. Cross-Carrier Scheduling (CCS) from SCell to PCell

• Allowed Scheduling Combinations:
• Self-scheduling on PCell/PSCell is allowed.
• Cross-carrier scheduling from PCell/PSCell to another SCell is not allowed.
• Self-scheduling on the SCell used for scheduling PCell/PSCell is allowed.
• Cross-carrier scheduling from the SCell used for scheduling PCell/PSCell to another serving cell is allowed.
• Cross-carrier scheduling from another serving cell to the SCell used for scheduling PCell/PSCell is not allowed.
• DCI Format Handling:
• DCI formats 0_0/1_0 are monitored for self-scheduling in PCell and SCell.
• No changes introduced to DCI format monitoring rules.
• Padding is applied to align DCI sizes between PCell and SCell for CCS.
• Simultaneous Monitoring:
• Type A UEs do not support simultaneous monitoring of USS sets on sSCell and Type 0/0A/1/2 CSS sets on PCell for unicast DCI formats.
• Type B UEs can monitor overlapping USS and CSS sets.
• Numerology Restrictions:
• When PCell and sSCell use different numerologies, PDSCH reception preparation time is applied as per TS 38.214 Section 5.5.
• Capability Signaling:
• Separate UE capabilities introduced for handling scaling factors during sSCell activation/deactivation and dormant BWP switching.

2. Multi-Cell PDSCH Scheduling via a Single DCI

• Feature Status:
• RAN1 decided to stop work on two-cell PDSCH scheduling via a single DCI for Rel-17 DSS.
• Further study for Rel-18 may include more than two carriers for both UL and DL within FR1 and FR2.

3. Efficient Activation/Deactivation Mechanism for SCells

• Temporary Reference Signals (TRS):
• TRS is selected as the temporary RS for SCell activation.
• TRS triggering is handled via MAC-CE or DCI, with options for bitmap-based or A-TRS framework reuse.
• Activation Timing:
• The earliest slot for a UE to receive a triggered temporary RS is the last DL slot of the to-be-activated SCell overlapping with slot n+k as defined in TS 38.213 sub-clause 4.3.
• Configuration Details:
• CSI-RS resources within one resource set should be configured with the same TCI state.
• CSI-RS for tracking cannot use two NZP CSI-RS resources in one slot.
• Capability Enhancements:
• New FG35-2 introduced for additional bandwidth for fast SCell activation.

4. Dormant BWP Operation

• Behavior:
• Dormant BWP is one of the UE’s dedicated BWPs configured via RRC signaling.
• SpCell and PUCCH SCell cannot be configured with a dormant BWP.

5. PDCCH Monitoring and BD/CCE Limit Handling

• Scaling Factors:
• Scaling factors are applied for BD/CCE limit computation during sSCell activation and deactivation.
• Separate scaling factors introduced for PCell and sSCell configurations.
• Overbooking Handling:
• PDCCH overbooking on sSCell USS sets is not allowed.

6. Clarifications and Corrections

• Capability Description:
• Parameters in CSI-MeasConfig of P(S)Cell and sSCell are configured to ensure UE capabilities for A-/SP-CSI reporting on PUSCH are not exceeded.
• DCI Size Alignment:
• Padding zeros are appended to align DCI sizes between PCell and SCell for CCS.
• Section Naming:
• Corrections made to section naming for CSI-RS tracking for fast SCell activation.

7. Other Agreements

• Collision Avoidance:
• Discussions on avoiding collisions between temporary RS and other signaling.
• Stage 2 Description:
• Updates made to TS 38.300 to reflect fast SCell activation mechanisms.

This summary consolidates the key agreements across various topics discussed in the document.