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Summary of Agreements by Topic

Channel Bandwidths (3MHz and 5MHz)

1. Transmission Bandwidths:
• For 3MHz channel bandwidth, maximum transmission bandwidth is assumed to be 15 PRBs or 16 PRBs for evaluation and analysis.
• For 5MHz channel bandwidth, 20 PRBs CORESET#0 transmission bandwidth is supported, with the upper 4 PRBs of the 24 PRBs CORESET#0 punctured to obtain 20 PRBs.
2. PBCH Transmission:
• For transmission bandwidths <5MHz, PBCH encoding is based on 20 PRBs, and PRBs outside the available bandwidth are punctured.
• For 3MHz channel bandwidth, PBCH transmission bandwidth is 12 PRBs.
3. CORESET#0 Configuration:
• For 3MHz channel bandwidth:
• Both 12 PRBs and 15 PRBs CORESET#0 are supported.
• Interleaved and non-interleaved CCE-to-REG mapping are supported.
• For 5MHz channel bandwidth:
• Only interleaved CCE-to-REG mapping is supported.
• Maximum number of CORESET#0 symbols is 3, and minimum is 2.
4. PRB Offset:
• For 12 PRBs CORESET#0 transmission bandwidth, PRB offset = 0.
• For 15 PRBs CORESET#0 transmission bandwidth, PRB offset = 0 or 2, with further study on offsets 1 and 3.

Synchronization Raster

1. Finer Sync Raster:
• RAN1 requested RAN4 to evaluate the feasibility of finer synchronization raster for 3MHz and 5MHz channel bandwidths.
2. New Sync Raster Points:
• For 3MHz channel bandwidth:
• At sync raster point 920.73MHz (GSCN 41637 on band n100), UE supports 12 PRB BWP.
• For other sync raster points, UE supports 15 PRB BWP.

Physical Channels

1. PDCCH Detection Performance:
• Options considered for recovery:
• Power boosting.
• Non-interleaved CCE-to-REG mapping.
• New interleaver.
• New aggregation levels.
• PDCCH rate matching.
• No enhancement specified.
2. PBCH Detection Performance:
• Options considered for recovery:
• Power boosting.
• Multiple PBCH receptions.
• PBCH remapping.
• PBCH payload reduction.
• PBCH rate matching around punctured PRBs.
• No enhancement specified.
3. PRACH:
• No enhancements required for PRACH to operate on transmission bandwidths <5MHz.
• Short PRACH formats with 15kHz SCS and long PRACH formats with 1.25kHz SCS are supported.
4. PUCCH:
• No enhancements needed for PUCCH to support transmission bandwidths <5MHz.
• Study on the necessity of PUCCH frequency hopping disabling.

Initial Access

1. SSB and CORESET#0 Multiplexing:
• SSB and CORESET#0 multiplexing pattern 1 is used.
• REG bundle size = 6.
2. Initial Downlink BWP:
• If UE is not provided initialDownlinkBWP:
• For 12 PRBs CORESET#0 transmission bandwidth, initial DL BWP has 12 PRBs.
• For 15 PRBs CORESET#0 transmission bandwidth, initial DL BWP has 15 PRBs.

CSI-RS/TRS

1. CSI-RS for RRM Measurements:
• No enhancements needed for CSI-RS other than for RRM measurements for transmission bandwidths <5MHz.
2. TRS:
• No consensus in RAN1 to support enhancements for TRS for dedicated spectrum <5MHz.

Backward Compatibility

1. Inter-Frequency Neighbor Cells:
• RAN1 to send an LS to RAN2 (cc RAN4) on backward compatibility issues for inter-frequency neighbor cell lists for single carrier operation in NR dedicated spectrum <5MHz.

General Agreements

1. No Enhancements Required:
• No enhancements required for PRACH, PUCCH, and CSI-RS/TRS for transmission bandwidths <5MHz.
• No intention to change the WID scope and TU.
2. Legacy Configurations:
• kssb follows legacy configuration for determining CORESET#0 position in the frequency domain.
3. Editor Notes:
• Text proposals for TS 38.211 and TS 38.300 were endorsed for specification revisions.

This summary captures the key agreements across various topics related to NR support for dedicated spectrum less than 5MHz for FR1.