Nokia · 10.5.5
Other physical layer signals, channels and procedure ·
RAN1#124bis · Source verification
the AI's delta
shifted
vs RAN1#124
Nokia added dynamic TDD and gNB semi-static SBFD as the explicit starting duplexing schemes for CLI handling, which was not stated at RAN1_124. Their L1-over-L3 priority for UE-to-UE CLI is preserved but refined with a new justification citing QCL-TypeD for spatial filter indications. The RSSI extension study proposal is new, going beyond the prior event-triggered reporting study. Three entirely new CLI handling proposals appeared: power control-based schemes leveraging in-band emission properties, resource index reporting for aggressor UE identification, and new BS-to-BS CLI procedures beyond measurement exchange. The RIM position is preserved with nearly identical language on Framework-1 priority, backhaul down-prioritization, and RS configurability reduction, though the explicit 48-vs-96-PRBs bandwidth detail is dropped and the MRSS compatibility anchoring is newly explicit. The Cell DTX/DRX proposal from RAN1_124 (joint optimization with spatial/power domain, relaxation of cell-common signals) is entirely dropped. A new topic area appears: CB-PUSCH L1 aspects with DMRS and scrambling selection, with dedicated SR preserved as baseline — replacing the prior meeting's silence on contention-based UL transmission.
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Contributions at RAN1#124bis · 1 doc
On other physical layer signals, channels and procedures in 6GR
Position extracted by AI
Nokia proposes using dynamic TDD and gNB semi-static SBFD as the starting duplexing schemes for CLI handling in 6GR. For UE-to-UE CLI, Nokia requires prioritizing layer-1 measurements over layer-3 measurements, citing faster tracking of interference conditions and spatial filter indications via QCL-TypeD, while preserving SRS-RSRP and CLI-RSSI as baseline reporting quantities and studying extension of RSSI to general interference measurement. Nokia proposes studying additional CLI handling schemes including power control-based schemes leveraging in-band emission properties and resource index reporting for aggressor UE identification without exact CLI level. For BS-to-BS CLI, Nokia supports 5G NR UL resource muting with comb-2 pattern as baseline while proposing new procedures beyond measurement exchange for gNB-to-gNB CLI mitigation. On RIM, Nokia requires basing the 6GR solution on 5G NR RIM design for MRSS compatibility but proposes simplifications including prioritizing RIM Framework-1 (victim-triggered RS-1 plus aggressor RS-2) over Framework-0, down-prioritizing backhaul-signaling-dependent frameworks (2.1, 2.2) due to one-to-many aggressor-victim relationships, and reducing RIM RS configurability. For scheduling request, Nokia proposes studying CB-PUSCH L1 aspects including DMRS and scrambling selection on shared time-frequency resources while considering dedicated SR mechanism as baseline for predictable latency.
Summary
Nokia's 6GR contribution presents 19 proposals and 5 observations across four technical areas: cross-link interference (CLI) handling for advanced duplexing, remote interference management (RIM), scheduling request (SR), and MRSS coexistence, with particular emphasis on CLI measurement frameworks and RIM simplification.
Prior contributions at RAN1#124 · 1 doc · Feb 09, 2026
On other physical layer signals, channels and procedures in 6GR
Position extracted by AI
Nokia proposes prioritizing layer-1 over layer-3 UE-to-UE CLI measurements for 6GR due to higher configuration flexibility and faster interference tracking. They require re-using SRS-RSRP and CLI-RSSI as baseline reporting quantities while studying event-triggered reporting to reduce UE complexity and energy consumption. For RIM, Nokia prefers simplifying the 5G NR RIM design by prioritizing RIM Framework-1, down-prioritizing backhaul-signaling solutions due to one-to-many aggressor-victim cell relationships, and reducing RIM RS configurability parameters (sequence numbers, bandwidth options like 48 vs 96 PRBs) to improve inter-operability. For Cell DTX/DRX, they propose studying joint optimization with spatial/power domain adaptation and relaxation of cell-common signals/channels during non-active periods.
Summary
This document from Nokia presents 12 proposals and 2 observations across three main technical areas in 6G Radio: Cross-link interference (CLI) handling, Remote Interference Management (RIM), and Cell DTX/DRX for energy efficiency. The proposals aim to establish frameworks for measuring and reporting both UE-to-UE and gNB-to-gNB CLI, simplify RIM design based on 5G NR commercial deployment lessons, and study Cell DTX/DRX with joint optimization of energy-saving features.
How this was derived
The AI extracted the "position extracted" field above directly from each Tdoc during summarization.
For the delta summary at the top, the AI compared Nokia's consolidated stance at RAN1#124bis
against their stance at RAN1#124 and classified the change as
shifted.
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