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Summary of Agreements by Topic

PRACH Coverage Enhancements

1. Multiple PRACH Transmissions:
• Support {2, 4, 8} for the number of multiple PRACH transmissions with the same Tx beam.
• PRACH transmissions within one RACH attempt are only performed within one RO group associated with the same SSB/CSI-RS.
• Transmission power ramping is not applied within one RACH attempt for multiple PRACH transmissions with the same Tx beam.
• RA-RNTI is calculated based on the last valid RO in the RO group corresponding to the multiple PRACH transmissions.
2. RO Group Determination:
• RO groups are determined/configured within a time period X, starting from frame 0, and repeat every time period X.
• The starting RO of the first RO group is determined, followed by sequential determination of other RO groups.
• All ROs in one RO group are associated with the same SSB(s).
3. Dropping Rules:
• Dropping rules for single PRACH transmissions are extended to multiple PRACH transmissions.
• Layer 1 notifies higher layers to suspend the power ramping counter when PRACH transmission in all PRACH occasions is dropped.
4. PRACH Mask Index:
• Down-select options for applying PRACH mask, including whether the mask is applied before or after RO group determination.

Power Domain Enhancements

1. FDSS-SE (Frequency Domain Spectrum Shaping with Spectrum Extension):
• Legacy DMRS sequences are used with FDSS-SE for sequence lengths ≥ 30.
• Transport block size is calculated using the number of PRBs in the inband.
• Spectrum extension is configured using either an extension factor or an even number of PRBs.
2. UE Power Reporting:
• No RAN1 specification impact for including ΔPPowerClass in reports to the network.
• RAN1 concludes discussions on enhancements for increasing UE power high limit for CA and DC in Rel-18.
3. MPR/PAR Reduction:
• No further discussion on enhancements for reducing MPR/PAR objectives in Rel-18.

Dynamic Switching Between DFT-S-OFDM and CP-OFDM

1. Dynamic Waveform Switching:
• Introduce new RRC parameters for configuration of dynamic waveform switching (DWS) field in DCI formats 0_1/0_2.
• Value "0" of DWS indicator field maps to transform precoding enabled; value "1" maps to transform precoding disabled.
2. Power Headroom Reporting:
• UE reports power headroom information for assumed PUSCH using a target waveform different from the actual PUSCH.
• Reporting is based on actual PUSCH transmission parameters, except waveform.
3. UE Capability for MPR Reduction:
• RAN1 finds no specification impact for UE capabilities related to powerBoostRel18 and powerBoostTSRel18.

General Agreements

1. Specification Impact:
• RAN1 concludes all discussions related to Rel-18 coverage enhancements and does not plan further discussions unless requested by other working groups.
2. Coordination with Other Working Groups:
• RAN1 informs RAN2 and RAN4 about agreements and expectations for specification development related to UE capabilities and power reporting.

This summary provides a comprehensive overview of the agreements across PRACH coverage enhancements, power domain enhancements, and dynamic waveform switching topics.