Spreadtrum · 10.5.5
Other physical layer signals, channels and procedure ·
RAN1#124bis · Source verification
the AI's delta
shifted
vs RAN1#124
Spreadtrum hardened their SR position from proposes to requires that physical uplink control signaling carry scheduling requests combinable with other UCI, and hardened SR+BSR from preferred mechanism to requires support for,' while softening their stance on contention-based UL transmission from arguing CBUL is unsuitable to proposing further study of it. The Rel-17 NR UL power control baseline proposal and the NR-6G MRSS resource coordination proposals are entirely dropped. The unified UE-to-UE CLI measurement concept is expanded: they added SRS-RSRP and CLI-RSSI as explicit candidate resources/quantities, proposed limiting reporting to only one of L1 or L3 with network-controlled periodic and aperiodic mechanisms, and added spatial domain solutions with an FR1 gain caveat plus a caution on power-control-based solutions. Their BS-to-BS CLI position shifted from proposing Rel-19 gNB-to-gNB measurements as a starting point to proposing study of BS-to-BS CLI handling for specific duplex scenarios, and they added a detailed CLI taxonomy covering co-channel intra-subband, co-channel inter-subband, and adjacent-channel categories for both UE-to-UE and BS-to-BS links.
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Contributions at RAN1#124bis · 1 doc
Discussion on other physical layer signals, channels and procedure
Position extracted by AI
Spreadtrum requires that 6GR physical uplink control signaling carry scheduling requests combinable with other UCI, and requires support for the SR+BSR mechanism while proposing further study of contention-based UL transmission. For interference management, they propose studying UE-to-UE and BS-to-BS CLI handling specifically for gNB semi-static SBFD and dynamic TDD deployment scenarios, and propose a detailed taxonomy of CLI types including co-channel intra-subband, co-channel inter-subband, and adjacent-channel categories for both UE-to-UE and BS-to-BS links. They present a technical case for unified UE-to-UE CLI measurement and reporting across multiple duplex types, recommending SRS-RSRP and CLI-RSSI as candidate measurement resources/quantities and proposing to limit reporting to only one of L1 or L3 CLI reporting with network-controlled periodic and aperiodic mechanisms. They propose spatial domain solutions for UE-to-UE CLI handling but note potential limited gain in FR1 due to small UE antenna size, and argue that power control based solutions should be applied carefully to avoid degrading UL performance or DL throughput.
Summary
This Spreadtrum contribution discusses other physical layer signals, channels, and procedures for 6GR, focusing on scheduling request mechanisms, interference management (UE-to-UE, BS-to-BS, remote), and NR-6GR coexistence. The document contains 11 numbered proposals/observations across these areas.
Prior contributions at RAN1#124 · 1 doc · Feb 09, 2026
Discussion on other physical layer signals, channels and procedure for 6GR
Position extracted by AI
Spreadtrum UNISOC proposes that 6GR physical uplink control signaling carry scheduling request combined with other UCI, and supports SR+BSR as the preferred mechanism over contention-based UL transmission, which they argue is not suitable for latency-sensitive data due to non-deterministic access latency affected by CBUL resource periodicity and UE sharing count. They propose Rel-17 NR UL PC framework (open-loop and closed-loop) as the baseline for 6GR power control, reusing beam-based transmissions, multiple numerologies, and DL RS for path loss measurement, with NR PHR as the baseline for 6GR PHR. For CLI handling, they observe overlapping functionalities between L1/L3 CLI measurement schemes in NR and propose a unified UE-to-UE CLI measurement and reporting scheme for SBFD operation. They propose using gNB-to-gNB co-channel CLI/channel measurements introduced in R19 as starting point with information exchange among gNBs and transparent/non-transparent UL resource muting. For NR-6GR MRSS, they propose resource allocation coordination to prevent conflicts, aligned numerology/waveform, and aligned UL/DL TDD direction to avoid cross-slot interference.
Summary
Spreadtrum UNISOC provides views on 6G Radio physical layer signals, channels, and procedures, covering scheduling request, power control, and interference measurement/handling. The document contains 8 formal proposals and 1 observation, with a focus on reusing NR mechanisms as baselines for 6G while proposing unified schemes for cross-link interference handling.
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 Spreadtrum's consolidated stance at RAN1#124bis
against their stance at RAN1#124 and classified the change as
shifted.
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