R1-2600114
discussion
Discussion on bandwidth operation for 6GR
From Spreadtrum
Summary
This document contains 4 proposals and 2 observations regarding 6GR BWP operation during and after initial access. It addresses discrete spectrum utilization, CORESET-0 configuration, center frequency misalignment for DL/UL BWPs, and dedicated initial BWPs for LPWA and SCMC scenarios.
Position
Spreadtrum proposes directly adopting the NR mechanism for determining CORESET-0 information via MIB for 6GR initial access. They propose studying discontinuous frequency resources for initial DL/UL BWP to address the limitation that NR's continuous frequency requirement for BWP/CC restricts effective utilization of operators' discrete spectrum resources. They propose studying the feasibility of center frequency misalignment for DL/UL initial BWP, arguing that NR TDD's alignment requirement may limit 6GR application scenarios, particularly considering SCMC sub-band differences. They further propose that the NR concept of downlink/uplink initial BWP serves as a starting point for 6GR, with additional FFS items on dedicated initial BWP for LPWA and multiple initial BWPs for SCMC.
Key proposals
- Proposal 1 (Sec 2): Adopt NR mechanism of determining CORESET-0 information via MIB for 6GR initial access procedure.
- Proposal 2 (Sec 2): Study discontinuous frequency resources for 6GR initial DL/UL BWP.
- Proposal 3 (Sec 2): Study the feasibility of central frequency misalignment for 6GR DL/UL initial BWP.
- Proposal 4 (Sec 2): The concept of NR downlink/uplink initial BWP can be a starting point for 6GR.
- Observation 1 (Sec 2): The requirement of continuous frequency for BWP/CC in NR limits the effective utilization of discrete spectrum resources held by operators.
- Observation 2 (Sec 2): For NR TDD, the requirement for center frequency alignment of downlink BWP and uplink BWP may limit the application scenarios in 6GR.
- Proposal 1 (Sec 3): Adopt NR mechanism of determining CORESET-0 information via MIB for 6GR initial access procedure.
- Proposal 2 (Sec 3): Study discontinuous frequency resources for 6GR initial DL/UL BWP.
- Proposal 3 (Sec 3): Study the feasibility of central frequency misalignment for 6GR DL/UL initial BWP.
- Proposal 4 (Sec 3): The concept of NR downlink/uplink initial BWP can be a starting point for 6GR.