Thales · 10.3.1
Channel coding ·
RAN1#124bis · Source verification
the AI's delta
new
vs RAN1#124
Thales is a new contributor at RAN1_124bis with no prior position on record. They introduce a new proposal area: concatenated BCH outer code with extended LDPC targeting error-floor mitigation for high-reliability scenarios. Specific evaluation parameters are proposed — short BCH outer code with error correction capability t≈8-10, LDPC code block size up to 16896 bits — with evaluation focusing on post-decoding BER/BLER in the error-floor region, HARQ retransmission impact, and NTN latency. Technical justification draws from the DVB-S2/S2X standards (ETSI EN 302 307) where this two-layer error correction strategy achieves QEF performance.
AI-synthesized from contributions · all text is paraphrased
Every position summary on this site is generated by an AI from the actual Tdoc contributions. This page shows you the exact source documents the AI read to produce the summary above, so you can verify it yourself. Click any Tdoc ID to view its detail page, or click "3gpp.org ↗" to read the original on the official 3GPP server.
Contributions at RAN1#124bis · 1 doc
Considerations on 6GR Channel Coding
Position extracted by AI
Thales proposes studying a concatenated BCH outer code to ensure Quasi-Error-Free (QEF) performance, specifically observing that as LDPC code block sizes increase to 16896 bits, the impact of the inherent Error Floor can become more pronounced in high-throughput scenarios or sensitive NTN links. They propose that RAN1 evaluate this BCH+LDPC scheme using a short BCH outer code (t≈8–10) focusing on post-decoding BER/BLER in the error-floor region, impact on HARQ retransmissions and latency for NTN, and implementation complexity overhead relative to pure LDPC. They draw technical justification from the DVB-S2/S2X standards (ETSI EN 302 307) where this two-layer error correction strategy achieves QEF performance critical for broadcast applications, arguing that the BCH code acts as a final clean-up stage for LDPC residual errors.
Summary
This Thales-led contribution proposes studying a concatenated BCH outer code with extended LDPC for 6G to mitigate the error floor in high-reliability scenarios. The document contains 2 Observations in the Introduction, 3 Observations in the main study, and a total of 2 unique Proposals that are recapitulated in the Conclusion.
Prior contributions
Thales has no prior contributions to 10.3.1 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 Thales's consolidated stance at RAN1#124bis
against their stance at RAN1#124 and classified the change as
new.
Always verify critical claims against the original Tdocs linked above.