Summary generated by AI
> Provide an extensive
summary of the agreements by topic. No need to mention CRs.
Summary of Agreements by Topic
Support of 16-QAM for Unicast in UL and DL for NB-IoT
- Maximum TBS for 16-QAM:
- Standalone and guard-band deployments: Maximum TBS is
4968 bits with ISF=7.
- Inband deployments: Maximum TBS is 3624 bits with ISF=7.
- Power Allocation:
- For standalone and guard-band deployments:
- Signal the ratio of NPDSCH EPRE to NRS EPRE in symbols
with and without NRS.
- Legacy power allocation is used if signaling is not
indicated.
- For inband deployments:
- Signal the power ratio of NPDSCH EPRE to CRS EPRE in
addition to standalone/guard-band signaling.
- UE Capability and Configuration:
- Separate optional UE capabilities for UL and DL 16-QAM.
- UE-specific RRC signaling is used to configure 16-QAM for
UL and DL.
- Channel Quality Reporting:
- Channel quality reporting for 16-QAM is based on NPDSCH
transport block achieving ≤10% BLER.
- A new CQI table is introduced for 16-QAM.
- DCI Design:
- Reserved state in DCI Format N0 and N1 indicates the use
of 16-QAM.
- DCI size is not increased to support 16-QAM.
- Repetition:
- Repetition is not supported for 16-QAM in uplink.
- Repetition of 2 is not supported for 16-QAM in downlink.
- Modulation Scheme:
- Breaking points between QPSK and 16-QAM are defined for
standalone/guard-band and inband deployments.
- Applicability:
- 16-QAM is applicable for multi-tone transmission with 12
subcarriers.
- 16-QAM is supported for NPUSCH in PUR procedure.
Support Additional PDSCH Scheduling Delay for
Introduction of 14-HARQ Processes in DL for eMTC
- PDSCH Scheduling Delay:
- For PUCCH non-repetition case:
- Delay of 2 BL/CE DL subframes.
- Delay of 7 subframes expressed as combinations of BL/CE
DL and UL subframes.
- HARQ-ACK Delay:
- Two alternatives for HARQ-ACK delay:
- Alt-1: Expressed as combinations of subframe types.
- Alt-2e: Legacy approach using absolute subframes.
- Field Encoding:
- Joint encoding of PDSCH scheduling delay and HARQ-ACK
delay in a single DCI field:
- 7 bits for Alt-1.
- 5 bits for Alt-2e.
- HARQ Processes:
- Maximum number of received PDSCH receptions pending
HARQ-ACK is set to 12.
- HARQ-ACK process number field uses 4 bits to include 11th
to 14th HARQ processes.
- Applicability:
- Feature applies only to User Specific Search Space (USS).
- PDSCH repetition scenarios are compliant with Rel-17
scheduling delays and HARQ-ACK delays.
Support a Maximum DL TBS of 1736 Bits as a Rel-17
Optional UE Capability
- Configuration:
- Enabled by unicast RRC configuration.
- No changes to DCI formats, TBS tables, and CQI tables.
- Behavior:
- If signaled TBS exceeds 1736 bits, UE applies a TBS of
1736 bits.
- Compatibility:
- Feature is compatible with all other eMTC features for
HD-FDD Cat.
M1 UEs in CE mode A.
Other Agreements
- CSI Reporting:
- No consensus on introducing CSI reference resources in
NB-IoT for Rel-17.
- Clarifications:
- Mapping to physical resources for 16-QAM in NB-IoT is
aligned.
- No acquisition of repetition number via DCI for 16-QAM
transmissions.
- Maintenance:
- Stable RRC parameters list for NB-IoT/eMTC with no
FFS/TBD left.
This summary consolidates the agreements across all topics
discussed in the document.