R1-2509351
discussion
Views on Channel Coding for 6G
From CEWiT
Summary
CEWiT provides views on channel coding for 6G data and control channels, focusing on codeword-to-layer mapping enhancements driven by increased antenna counts in FWA and handheld devices. The document makes 4 proposals (though numbering has inconsistencies), primarily concerning the baseline adoption of NR CW-to-layer mapping and studying extensions for higher codeword counts and multiple device types.
Position
CEWiT proposes considering NR CW-to-Layer mapping schemes as the baseline for 6G. They propose studying the need to support a higher number of codewords in 6G and appropriate extensions to CW-to-Layer mapping schemes for these additional codewords, driven by up to 4x increase in Tx/Rx antennas at the UE in FR3 and handheld devices. They propose enhancing existing CW-to-Layer mapping schemes to accommodate multiple device types, specifically citing FWA devices experiencing rank-deficient channels with large inter-layer capacity differences due to LoS nature, requiring mapping enhancements so overall channel capacity is not affected.
Key proposals
- Proposal 1 (Sec Discussion: Data channel): Consider NR CW-to-Layer mapping schemes as baseline in 6G.
- Proposal 2 (Sec Discussion: Data channel): The need to support higher number of codewords in 6G and appropriate extension to CW-to-Layer mapping schemes for additional codewords should be studied.
- Proposal 3 (Sec Discussion: Data channel): Enhance the existing CW-to-Layer mapping schemes to accommodate multiple device types.
- Proposal 2/3/4 (Sec Conclusion): (Note: Conclusion repeats proposals with shifted numbering; see Proposal 1-3 above for actual content)