Ericsson · 10.6.1.1
Design of WUS with OFDM-based sequence ·
RAN1#124bis · Source verification
the AI's delta
new
vs RAN1#124
Ericsson enters as a new contributor with a comprehensive proposal covering multiple dimensions not previously discussed. They introduce a new design-philosophy requirement that OFDM sequences be defined in the frequency domain, arguing this provides lower base station complexity and more efficient multiplexing compared to time-domain definition—an argument directly relevant to FUTUREWEI's pre-DFT time-domain sequence overlay definition and Spreadtrum's time-domain EE processing discussions. They propose specific MDR (<10^-2) and FAR ({10^-1, 10^-2}) targets as starting points, distinct from the PDCCH-coverage-derived targets proposed by others. They add a configurable WUS duration proposal for 1-Rx/2-Rx UEs and extended coverage scenarios, and introduce a preference for reusing sequences planned for 6G synchronization/reference signals as a sequence selection criterion.
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Contributions at RAN1#124bis · 1 doc
Design of WUS with OFDM based sequence
Position extracted by AI
Ericsson proposes that the 6G DL WUS based on OFDM sequences be designed for all RRC states with commonality to reduce complexity. They require OFDM sequences to be defined in the frequency domain, arguing this provides lower base station complexity and more efficient multiplexing compared to time-domain definition. For performance, they propose a missed detection rate of less than 10^-2 and a false alarm rate target around {10^-1, 10^-2} as starting points, while requiring that overall paging/PDCCH misdetection performance not be significantly impacted. They support a configurable WUS duration to address different coverage conditions for 1-Rx/2-Rx UEs and extended coverage scenarios, and propose studying various sequence types like ZC, M, and Gold sequences, with a preference for reusing sequences planned for 6G synchronization/reference signals. Ericsson presents initial results showing 60-80% UE energy saving in Idle mode and provides specific link-level results mapping required SNR to WUS duration for different Rx antenna configurations.
Summary
This Ericsson Tdoc for 6G discusses the design of a Downlink Wake-up Signal (WUS) using OFDM-based sequences, covering general principles, multiplexing, synchronization, coverage, sequence design, and evaluation methodology. It presents 16 specific proposals and 13 observations, emphasizing UE power saving benefits and proposing key performance targets for missed detection and false alarm rates.
Prior contributions
Ericsson 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.
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For the delta summary at the top, the AI compared Ericsson's consolidated stance at RAN1#124bis
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new.
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