Content for TR 38.842 Word version: 17.0.0
1 Scope p. 9
The present document is a technical report for high power UE (power class 2) for NR inter-band Carrier Aggregation or NR-NR DC with and without SUL with x (6≥x>2) bands downlink and y (y=1, 2) bands uplink under Rel-17 time frame. The purpose is to gather the relevant background information and studies in order to address power class 2 NR inter-band CA/DC with and without SUL for more than 2 bands DL and with up to 2 bands UL in Table 1-1.
| NR CA configuration | Uplink CA configuration | Power class 2 cases | Release independent from | ||||||
|---|---|---|---|---|---|---|---|---|---|
| CA_nV1-nV2-…-nVx | - (Note 1) | ||||||||
| CA_nV1-nV2-…-nVx | CA_nVi-nVj (Note 2) | ||||||||
| CA_nV1-nV2-…-SUL_nVx-nVx+1 | SUL_nVx-nVx+1 | ||||||||
|
NOTE 1:
The UL carrier supports power class 2.
NOTE 2:
The integers i and j satisfy: 1 ≤ i ≤ x, 1 ≤ j ≤ x, i ≠ j.
|
|||||||||
The allowed maximum output power by each of carrier for power class 2 cases is listed in Table 1-2.
| Power class 2 cases for UL CA_nVi-nVj | CA power class | Carrier Vi power class | Carrier Vj power class |
|---|---|---|---|
| Case a | 26dBm | 23dBm | 23dBm |
| Case b | 26dBm | 23dBm | 26dBm |
| Case c | 26dBm | 26dBm | 23dBm |
| Case d | 26dBm | 26dBm | 26dBm |
|
NOTE:
The Carrier Vi and Vj are one-by-one corresponding to carriers in UL CA configuration of CA_nVi-nVj.
|
|||
2 References p. 9
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.
3 Definitions of terms, symbols and abbreviations p. 10
3.1 Terms p. 10
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.
3.2 Symbols p. 10
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, for serving cell c.
3.3 Abbreviations p. 10
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
BCS
Bandwidth Combination Set
CA
Carrier Aggregation
CC
Component Carriers
DC
Dual Connectivity
DL
Downlink
FDD
Frequency Division Duplex
MPR
Allowed maximum power reduction
MSD
Maximum Sensitivity Degradation
REFSENS
Reference Sensitivity power level
SCS
Subcarrier spacing
TDD
Time Division Duplex
UE
User Equipment
UL
Uplink
4 Background p. 10
At 3GPP RAN4#91-e meeting, a basket Work Item on "Power class 2 UE for NR inter-band CA and SUL configurations with x (x>2) bands DL and y (y=1, 2) bands UL" [2] was approved for Rel-17, of which the objectives are as follows:
- Specify the band-combination specific RF requirements for all listed power class 2 NR inter-band UL CA and SUL configurations with power class 2 on NUL and power class 3 on SUL (xDL/yUL, x>2, y=1, 2).
- Analysing combinations that have self-desensitization, applicable ΔTIB, c and ΔRIB, c and reference sensitivity exceptions including MSD test cases.
- Other additional impact to the requirements due to the high power on UL, if necessary.
4.1 TR Maintenance p. 11
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/band combination to ensure that the TPs related to the band/band combination have been implemented.
