Improving UL RMC Tables for 3GPP Specifications
Explore the proposal to enhance UL RMC tables in the 3GPP specifications for better readability and maintainability. Options such as merging TDD/FDD tables, combining tables for different SCS, and streamlining table structures are discussed. Agreement on various improvement options is considered for both FR1 and FR2 tables.
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Presentation Transcript
3GPP TSG-RAN WG4 Meeting #98-e Online, 25thJanuary 5th February 2021 Draft R4-2103121 Way forward on Improvement of UL RMC tables Rohde & Schwarz,
Background In the latest version of TS 38.101-1 there are 54 different UL RMC tables in Annex A, with many redundancies. In order to improve the readability and maintainability of the specification the table structure should be improved. Detailed analysis of the improvements and an example can be found in [1]. 2
Way forward TDD/FDD tables Observation 1: TDD tables are a copy of the FDD tables, only the UL slot information is new. Option 1: Remove the TDD tables from the specification, make the FDD tables applicable for FDD and TDD and cover the TDD specific information in the general section. Option 2: Keep the tables for FDD and TDD separate. Agreement: Option 1? 3
Way forward Tables for different SCS Observation 2: There is no difference between the tables using different SCS for the same modulation scheme, since the relevant information like payload size or number of modulated, do not depend on SCS Option 1: Merge the separate tables for 15, 30 and 60 kHz SCS for the same modulation into a single table. Option 2: Keep the tables for different SCS separate Agreement: Option 1? 4
Way forward Improving the table structure Observation 3: Columns for channel bandwidth and SCS only cause duplicated entries and provide no additional information Option 1: Remove channel bandwidth and SCS information from the tables. Option 2: Keep the information for channel bandwidth in the table Observation 4: Target coding rate information is redundant and conflicting with the information in TS 38.214. Option 1: Remove the target coding rate column from the tables Option 2: Update the information to match TS 38.214 Agreement: Observation 3: Option 1?; Observation 4: Option 1? 5
Way forward FR1 and FR2 tables in 38.101-1 and 38.101-2 Observation 5: The issue exists for both FR1 and FR2 tables, except for observation 1 since FR2 only has TDD tables. Option 1: Apply the same improvements for both FR1 and FR2 tables in 38.101-1 and 38.101-2 respectively. Option 2: Treat both FR1 and FR2 tables separately Agreement: Option 1? 6
References [1] R4-2102091; Improvement of UL RMC table ; Rohde & Schwarz; RAN4#98-e 7
