ZTE · 10.5.3.3
Other aspects ·
RAN1#124bis · Source verification
the AI's delta
new
vs RAN1#124
ZTE appears for the first time in the consolidated positions at RAN1_124bis with proposals spanning four distinct areas. For CSI acquisition, proposes joint CSI-RS and SRS based CSI acquisition with a compressed covariance report mechanism that reconstructs the channel covariance matrix from UE-reported indices and quantized values of top-L diagonal elements. Presents a technical case against 512 TXRUs antenna configuration citing processing complexity, power consumption, and engineering construction costs as feasibility barriers. Presents a technical case against IPN reporting citing two specific arguments: redundancy with existing CQI reports that already include DL interference and noise information for MCS determination, and limited benefit from scalar reporting without spatial domain information. For RS tracking, proposes DMRS-based tracking schemes (PDSCH DMRS and DMRS-only) as alternatives to dedicated periodic TRS, and requires 6GR RS for tracking to accommodate one port transmitted from all TRPs in CJT-mTRP scenarios, claiming a ~20% spectrum efficiency gain over 5G-NR TRS at SNR=-7dB.
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Contributions at RAN1#124bis · 1 doc
Discussion on other aspects of CSI acquisition and channel tracking
Position extracted by AI
ZTE proposes studying joint CSI-RS and SRS based CSI acquisition in 6GR, supporting compressed covariance report for DL CSI acquisition by reconstructing channel covariance matrix from UE-reported indices and quantized values of top-L diagonal elements. They oppose the 512 TXRUs antenna configuration, arguing its feasibility for practical commercial deployment is highly limited due to processing complexity, power consumption, and engineering construction costs. They present a technical case against IPN reporting, citing redundancy with existing CQI reports that include DL interference and noise information for MCS determination under SRS-based CSI acquisition, and limited benefit of scalar reporting without spatial domain information. For RS tracking, ZTE proposes studying DMRS-based tracking schemes (including PDSCH DMRS and DMRS-only) as alternatives to dedicated periodic TRS, and requires that 6GR RS for tracking accommodate one port transmitted from all TRPs in CJT-mTRP scenarios to achieve a ~20% spectrum efficiency gain over 5G-NR TRS at SNR=-7dB.
Summary
This ZTE contribution contains 7 Observations and 7 Proposals across two main technical areas: joint DL/UL CSI acquisition and reference signal design for tracking in 6G. The document argues for compressed covariance reporting and AI/ML-based CSI-RS/SRS fusion while opposing IPN reporting and 512 TXRU configurations, and proposes DMRS-based tracking schemes to replace dedicated periodic TRS.
Prior contributions
ZTE has no prior contributions to 10.5.3.3 in the meetings currently tracked. This is either a new contributor to this sub-topic or the earliest meeting in our history.
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 ZTE's consolidated stance at RAN1#124bis
against their stance at RAN1#124 and classified the change as
new.
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