Advanced Specification Issues and Terminology for NR V2X UE in 3GPP Meeting
Explore the discussions on specification structures and common terminology for NR V2X UE in a recent 3GPP meeting. Issues such as clause separation, general requirements, notation for concurrent operations, and more are analyzed. Dive into the details of proposals and considerations raised by contributors like Qualcomm.
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3GPP TSG-RAN WG4#94-e-Bis Meeting R4-2005634 Electronic Meeting, 20 30 Apr., 2020 WF on TR/TS structures and common terminology for NR V2X UE vivo, Qualcomm, ...
Background In this meeting, there are two contributions discussing on the specification issues and common terminology for NR V2X. R4-2003674, Considerations on improving the draft TR and TS for NR V2X (vivo) R4-2003881, NR V2X specification structure for interband concurrent requirements in 38.101-1 (Qualcomm)
Specification structure and common terminology Issue 1-Clause separation and suffix for V2X Option 1:Suffix E for NR V2X including sidelink standalone, con-current operation, and V2X bands. Option 2:Clause suffix E for V2X sidelink standalone requirements and bands, clause suffix Ea for V2X interband concurrent-specific requirements and bands. Table 4.3-1: Definition of suffixes Clause suffix None A B C D E Ea Variant Single Carrier Carrier Aggregation (CA) Dual-Connectivity (DC) Supplement Uplink (SUL) UL MIMO V2X Sidelink Standalone V2X Interband Concurrent Option 3: Create separate sub-clauses for these four sets of RF requirements for NR V2X in FR1 for TR 38.886: Single carrier operation in ITS band Single carrier operation in NR V2X licensed bands Concurrent operation for NR V2X SL MIMO operation for NR V2X
Issue 2 - General Requirements Option 1 General requirements shall apply to V2X communication unless excepted. Consistent with existing 36.101/38.101 spec structure and eliminates multiple single-line references to general requirements Option 2 General requirements for smart phone type V2X UE. The UE shall satisfy the general and suffix E UE The Vehicle type UE only satisfy the Suffix E requirement for V2X UE
Specification structure and common terminology Issue 3-Notation for NR V2X con-current operation Option 1: EN-V2X_X_nY Option 2: V2X_X_nY Issue 4-Removal of FR2 in TR 38.886 Option 1: Remove all the chapter titles including FR2 from TR 38.886 and add a description in TR 38.886 all the requirements apply for FR1. New TR can be created for capturing FR2 requirements for NR V2X in future. Option 2: Do not Remove all the chapter titles including FR2 from TR 38.886 Issue 5-Merge co-existence study chapter Option 1: Merge Chapter 5 and Chapter 6 as one chapter for co-existence evaluation in TR 38.886. Option 2: keep the current chapter since section 5 is for adjacent channel coexistence and the other is for self desense analysis in a UE
Specification structure and common terminology Issue 6-Switch the chapter arrangement for TR 38.886 Option 1: Switch the chapter arrangement for Chapter for operating bands and Chapter for coexistence study in TR 38.886. Option 2: Keep the current spec structure Issue 7-Clause title for NR V2X The clause titles are captured in the endorsed draft CRs and TPs for NR V2X as follows: Option 1. XXX for V2X communication Option 2. XXX for V2X Option 3. XXX for NR V2X UE Option 4. XXX for NR V2X
Specification structure and common terminology Issue 8-Duplex mode for NR SL For the duplex mode, there is a misalignment between TDD and HD for band n47. Option 1:TDD Option 2: HD
Company views and Way Forward Company Issue 1 Issue2 Issue 3 Issue 4 Issue 5 Issue 6 Issue 7 Issue 8 Qualcomm Opt 1 Opt 1 Opt 2 Opt 1 Opt 1 Opt 1 Opt 1 Opt 2 vivo Opt 1 Opt 1 Opt 2 Opt 1 Opt 1 Opt 1 Opt 1 Opt 2 LGE Opt 1 Opt 2 Opt 1 Opt 2 Opt 2 Opt 2 Opt 3 either CATT Opt 1 Opt 2 Opt 1 Opt 2 Opt 1 Opt 1 Opt 4 Opt 2 clarification is needed Huawei Opt 1 Opt 2 Opt 2 Opt 2 Opt 2 Opt 2 Opt 2 Futurewei Opt 1 Opt 2 Opt 2 Opt 2 Opt 2 Opt 2 Opt 2 Opt 2 Way forward Opt 1 None Opt 2 Opt 2 None None None Opt 2
