Nokia · 10.8.3

Nokia proposes that the RAN1-#122 agreements on baseline waveforms for 6G communications (CP-OFDM for DL, CP-OFDM and DFT-s-OFDM for UL) apply directly to 6G sensing, reusing CP-OFDM as the DL basis waveform and both CP-OFDM and DFT-s-OFDM as UL basis waveforms for sensing. They propose studying enhancements atop these baseline waveforms, including pulse waveforms such as FMCW, framed as dedicated sensing bursts within the CP-OFDM frame structure. They propose studying the impact of CP length, time/frequency granularity of the sensing reference signal, and CPI on sensing performance metrics (PFA, Pmiss, range estimation, Doppler estimation), as well as studying the feasibility of sensing within 6G frame structure and duplexing schemes (TDD, FDD, dynamic TDD, SBFD). They present preliminary simulation results under aNB monostatic mode at 6 GHz with 20 MHz bandwidth and 30 kHz SCS showing CP-OFDM outperforming OTFS and DFT-s-OFDM in Pmiss-vs-SNR detection performance, while all three waveforms perform equally well in RMSE of range estimation and radial velocity estimation. They propose agreeing on evaluation assumptions using Table 2 parameters as the starting point and on KPIs for waveform comparisons.