Spreadtrum · 10.6.1.1

Spreadtrum proposes a unified DL WUS design for all device types to avoid market fragmentation. They prefer CP-OFDM waveform over DFT-S-OFDM based on Rel-18 power consumption evaluations showing marginal UE-side difference and cite loss of PAPR advantage when frequency-division multiplexed with other CP-OFDM signals at the gNB. They propose reusing TR 38.869 evaluation assumptions with revisions reflecting EE processing state agreements and 6GR frequencies including 7GHz. They require at least 5-bit payload for DL WUS information and support a single information provisioning method (codepoint mechanism) across idle and connected modes. On network impact, they argue latency is not tightly related to DL-WUS design itself but rather to ramp-up time and SSB processing time, and propose revising FL's proposal to replace NES with network energy consumption.

Spreadtrum/UNISOC proposes using 5G Rel-19 LP-WUS functionality (subgroup paging indication, PDCCH monitoring indication, serving cell measurement) as the baseline for 6G DL WUS with OFDM-based sequence. They require a single unified WUS solution for all device types and require cell-wise coverage to achieve complete UE power saving gain, with Msg3 coverage as the starting point. They propose studying CP-OFDM as the waveform, arguing no distinct power consumption difference versus DFT-S-OFDM when considering FFT-based correlation and noting CP-OFDM simplifies operation when WUS is FDMed with other CP-OFDM signals. They propose studying both 6G SSB reuse and dedicated LP-SS for synchronization, and propose evaluating Gold, M, and ZC sequences with a payload of at least 5 bits, while arguing that WUS reliability targets for miss detection and false alarm rates require dedicated study due to potential low-precision hardware and synchronization errors in EE processing state.