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Summary of Agreements by Topic

Enhancements to Resource Multiplexing Between Child and Parent Links of an IAB Node

1. Resource Configuration:
• Rel-16 H/S/NA configuration overrides Rel-17 H/S/NA configuration for resources with dynamic availability indication.
• RB set size for IAB-DU cells is larger than or equal to the smallest RBG size of the IAB-MT’s configured BWPs.
• RB sets not covered by Rel-17 IAB-DU H/S/NA configuration are included in the last RB set.
2. Soft Resource Availability:
• DCI 2_5 indexes both AvailabilityCombinations-r16 and availabilityCombinationsRB-Groupsr17 when both are configured.
• AvailabilityCombinations tables can be configured separately for TDM and FDM modes.
3. Beam Indication:
• Restricted beam indication includes SSB, SSB+STC, or CSI-RS.
• Recommended beam indication includes either DL Rx beam or UL Tx beam, not both.
4. Timing Case Indication:
• Timing Case Indication MAC-CE provides a list of slots with associated timing case values.
• Case 1 is considered the default timing case.
5. Dynamic Switching Between TDM and Non-TDM Modes:
• No consensus on optional MAC-CE signaling for switching between TDM and non-TDM multiplexing modes.

Other Enhancements for Simultaneous Operation of IAB-Node’s Child and Parent Links

1. DL TX Power Adjustment:
• Range of DL TX power adjustment extended to [-15, 5] dB and [6, 15] dB.
• Adjustment applies only to PDSCH and its associated DMRS and PTRS.
• Adjustment does not apply to slots with Rel-16 TDM resource configuration.
2. UL PSD Range Indication:
• Indicated via a max value (Pmax) and an offset (0–10 dB).
• Range of Pmax is (-60, 50) dBm.
3. CSI Feedback:
• IAB-MT accounts for DL TX power adjustment when deriving CSI feedback.
• Frequency resources indicated by DL TX power adjustment MAC-CE are used for CSI reference resource.
4. Case-7 UL Timing:
• Formula corrected for Case-7 UL Tx timing.
• Timing offset provided via MAC-CE.
5. Guard Symbols:
• Number of guard symbols for switching between timing cases ranges from 0–7 symbols.

Interference Management

1. Adjacent RB Sets in FDM Operation:
• Handling interference between adjacent RB sets in FDM operation deferred for further discussion.
2. Beam Restrictions:
• Restricted beam indication applies to soft resources not explicitly indicated as available.

Higher Layer Parameters

1. RRC Parameters:
• Clarifications provided for RB set configuration and dynamic indication of availability.
• RB set size aligns with the lowest common RB index across all SCS-specific carriers.
2. MAC-CE Parameters:
• Timing Delta MAC-CE extended to support Tdelta range (0–2047).
• DL TX power adjustment and UL PSD range indications include slot index and beam information.

General Maintenance

1. Coexistence of Rel-16 and Rel-17 Configurations:
• Rel-16 configurations override Rel-17 configurations for dynamic availability indication.
• Coexistence clarified for RB set configurations and resource definitions.
2. Editorial Corrections:
• Corrections made to improve clarity in specifications for RB set size, availability indication, and timing case definitions.

This summary consolidates the agreements across various topics related to enhancements and maintenance of Integrated Access and Backhaul (IAB) in Rel-17.