Content for TR 38.718-03-01 Word version: 18.0.0
1 Scope p. 22
The present document is a technical report for power class 3 NR inter-band CA and DC for 3 bands DL with up to 2 bands UL under Rel-18 time frame. The purpose is to gather the relevant background information and studies in order to address NR inter-band CA and DC for 3 bands DL with up to 2 bands UL for the Rel-18 band combinations.
This TR contains the RF requirements of band specific combination part. The actual requirements are added to the corresponding technical specifications.
2 References p. 22
The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
- References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
- For a specific reference, subsequent revisions do not apply.
- For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 38.101-1: "NR; User Equipment (UE) radio transmission and reception; Part 1: Range 1 Standalone".
[3]
TS 38.101-2: "NR; User Equipment (UE) radio transmission and reception; Part 2: Range 2 Standalone".
[4]
TS 38.101-3: "NR; User Equipment (UE) radio transmission and reception; Part 3: Range 1 and Range 2 Interworking operation with other radios".
3 Definitions of terms, symbols and abbreviations p. 22
3.1 Terms p. 22
For the purposes of the present document, the terms given in TR 21.905 and the following apply. A term defined in the present document takes precedence over the definition of the same term, if any, in TR 21.905.
Carrier aggregation:
Aggregation of two or more component carriers in order to support wider transmission bandwidths.
Inter-band carrier aggregation:
Carrier aggregation of component carriers in different operating bands.
3.2 Symbols p. 22
For the purposes of the present document, the following symbols apply:
ΔRIB,c
Allowed reference sensitivity relaxation due to support for inter-band CA operation, for serving cell c
ΔTIB,c
Allowed maximum configured output power relaxation due to support for inter-band CA operation, inter-band NR-DC operation and due to support for SUL operations, for serving cell c
3.3 Abbreviations p. 22
For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply. An abbreviation defined in the present document takes precedence over the definition of the same abbreviation, if any, in TR 21.905.
BS
Base Station
CA
Carrier Aggregation
DC
Dual Connectivity
DL
DownLink
FDD
Frequency Division Duplex
IMD
Inter-modulation
MSD
Maximum Sensitivity Deduction
SCS
Subcarrier spacing
TDD
Time Division Duplex
UE
User Equipment
UL
UpLink
4 Background p. 23
4.1 Introduction p. 23
The present document is a technical report for NR inter-band CA and DC for 3 bands DL with up to 2 bands UL under Rel-18 time frame. The document covers the RF requirements for each band combination specific issues (i.e. one sub-clause defined per band combination) including:
- Common issues for both 1 band UL and 2 bands UL NR CA, including ΔTIB and ΔRIB requirements.
- 2 bands UL NR CA specific issues, including MSD caused by IMD issue, etc.
4.2 TR Maintenance p. 23
A single company is responsible for introducing all approved TPs in the current TR, i.e. TR editor. However, it is the responsibility of the contact person of each band combination to ensure that the TPs related to the band combination have been implemented.
Editor's note:
It is not recommended to bring TP to TR for the following cases:
- NR CA configurations with additional BCS other than BCS0 (such as BCS1) if there is no additional technical issue.
- High order DL NR CA configurations, such as DL NR CA configuration CA_nXA-nYA-nZC
