R1-2509142
discussion
Evaluation assumptions for 6GR air interface
From MediaTek
Summary
MediaTek provides 2 observations and 9 proposals on evaluation assumptions for 6G radio, covering antenna modelling, traffic models, link budget templates, link-level and system-level evaluation parameters across both terrestrial (TN) and non-terrestrial (NTN) deployments.
Position
MediaTek proposes prioritizing specific UE antenna configurations per frequency band for 6G study, with baseline PC3 power class below 7 GHz TN and baseline PC2 at/above 7 GHz TN, and EIRP density of [57-60] dBm for Ku-band NTN. They propose reusing the TR38.830 link budget template (Candidate 1) as baseline for coverage evaluation, arguing it better handles inter-band analysis with penetration loss and bandwidth considerations. They recommend Full Buffer traffic model for calibration to reduce evaluation effort. For system-level evaluation, they prioritize TN deployment scenarios (Dense Urban, Urban Macro, Sub-urban Macro) and LEO-600 for NTN, with carrier frequencies 4 GHz, 7 GHz, 700 MHz for TN and Ku-band, S-band for NTN, while deprioritizing 30 GHz.
Key proposals
- Proposal 1 (Sec 2.1): Prioritize specific UE Tx power and number of UE antenna ports for antenna configurations across frequency bands (700 MHz, 4 GHz, 7 GHz for TN; S-band, Ku-band for NTN), including polarized antenna modelling, antenna element gain pattern, and power class options.
- Proposal 2 (Sec 2.2): Prioritize Full Buffer traffic model for calibration purposes.
- Proposal 3 (Sec 3.1): Adopt Candidate 1, reusing the link budget template from TR38.830 as the baseline for 6GR coverage evaluation, noting parameters may become redundant per RAN Plenary targets.
- Proposal 4 (Sec 3.2): Take Tables 1-3 as starting points for link-level evaluation assumptions for synchronization signals, PBCH, and PRACH.
- Proposal 5 (Sec 3.2): Take Tables 4-5 as starting points for link-level evaluation assumptions for MIMO-related physical signals including DMRS and CSI-RS.
- Proposal 6 (Sec 3.2): Take Tables 6-7 as starting points for link-level evaluation assumptions for other physical channels or signals.
- Proposal 7 (Sec 4): Prioritize Dense Urban, Urban Macro, Sub-urban Macro (TN) and LEO-600 (NTN) deployment scenarios, with carrier frequencies 4 GHz, 7 GHz, 700 MHz (TN) and Ku-band, S-band (NTN).
- Proposal 8 (Sec 4.1): Take Table 8 as a starting point for system-level evaluation assumptions for 6G TN.
- Proposal 9 (Sec 4.2): Take Table 9 as a starting point for system-level evaluation assumptions for 6G NTN.