EURECOM · 10.6.1.1
Design of WUS with OFDM-based sequence ·
RAN1#124bis · Source verification
the AI's delta
new
vs RAN1#124
EURECOM enters as a new contributor with a fundamentally different WUS design strategy: a product-code based VHC scheme with independent frequency-domain and time-domain encoding enabling independent decoding. This represents an entirely new design direction not present in prior meeting discussions, moving beyond the sequence-selection framework debated by other companies. They propose expanded payload capacity (>8 bits versus Spreadtrum's minimum 5 bits) and support their case with quantified simulation results showing ~4dB gain at 1% BLER over the Rel-19 baseline and a resource-efficiency demonstration (168 REs vs 528 REs) at the cost of longer transmission time. The VHC proposal introduces time-frequency coding structure not previously considered in the sequence-based design discussion.
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Contributions at RAN1#124bis · 1 doc
Discussion on design of WUS with OFDM based sequence
Position extracted by AI
EURECOM proposes a product-code based Vertical-Horizontal Coding (VHC) strategy where input bits are encoded independently in frequency-domain (vertical) and time-domain (horizontal), allowing the two components to be decoded independently to reduce receiver complexity. They propose studying increased payload capacity (>8 bits) for 6G WUS to enable enhanced grouping or UE-specific wake-up functionality. They present simulation results showing the proposed VHC scheme achieves approximately 4dB performance gain at 1% BLER compared to the Rel-19 sequence-based design under TDL-C 30ns channel with 15-bit payload over 11 PRBs. They also demonstrate that VHC can achieve similar performance to Rel-19 while consuming roughly 3 times fewer resources (168 REs vs 528 REs) at the expense of longer transmission time.
Summary
EURECOM proposes a Vertical-Horizontal Coding (VHC) product-code scheme for 6G Wake-Up Signal (WUS) design that separates frequency and time domain encoding to reduce receiver complexity. The document makes 2 Observations and 2 Proposals, demonstrating that the proposed VHC WUS design achieves 4dB gain at 1% BLER over the Rel-19 sequence-based design while enabling reduced-complexity non-coherent detection.
Prior contributions
EURECOM has no prior contributions to 10.6.1.1 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 EURECOM's consolidated stance at RAN1#124bis
against their stance at RAN1#124 and classified the change as
new.
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