3 Definition of terms, symbols and abbreviations
38.521-43GPPNRPart 4: PerformanceRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification
3.1 Terms
For the purposes of the present document, the terms given in TR 21.905 [1] 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 [1].
aggregated channel bandwidth: The RF bandwidth in which a UE transmits and receives multiple contiguously aggregated carriers.
carrier aggregation: Aggregation of two or more component carriers in order to support wider transmission bandwidths.
carrier aggregation band: A set of one or more operating bands across which multiple carriers are aggregated with a specific set of technical requirements.
carrier aggregation bandwidth class: A class defined by the aggregated transmission bandwidth configuration and maximum number of component carriers supported by a UE.
carrier aggregation configuration: A combination of CA operating band(s) and CA bandwidth class(es) supported by a UE.
DL BWP: DL bandwidth part as defined in TS 38.213 [11].
EN-DC: E-UTRA-NR Dual Connectivity as defined in TS 37.340 [13, clause 4.1.2].
FR1: Frequency range 1 as defined in TS 38.101-3 [4] clause 5.1.
FR2: Frequency range 2 as defined in TS 38.101-3 [4] clause 5.1.
PDSCH mapping type A or B: A type of PDSCH allocation sent in the RRC message which defines the time domain allocation of PDSCH DMRS symbols. PDSCH mapping type A is slot based assignment with fixed starting OFDM symbol with variable length. PDSCH mapping type B is non-slot based assignment used for configuring min-slots.
SSB: SS/PBCH block as defined in TS 38.211 [9] clause 7.8.3.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
Subcarrier spacing configuration as defined in TS 38.211 [9] clause 4.2]
The power spectral density of a white noise source with average power per RE normalized to the subcarrier spacing as defined in Section 4.4.3 for conducted requirements and Section 4.5.3 for radiated requirements
3.3 Abbreviations
For the purposes of the present document, the abbreviations given in TR 21.905 [1] 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 [1].
CA Carrier Aggregation
CC Component Carrier
CCE Control Channel Element
CORESET Control Resource Set
CP Cyclic Prefix
CSI Channel-State Information
CSI-IM CSI Interference Measurement
CSI-RS CSI Reference Signal
CW Codeword
CQI Channel Quality Indicator
CRC Cyclic Redundancy Check
CRI CSI-RS Resource Indicator
DC Dual Connectivity
DCI Downlink Control Information
DL Downlink
DMRS Demodulation Reference Signal
DPS Dynamic Point Selection
EPRE Energy Per Resource Element
EN-DC E-UTRA-NR Dual Connectivity
FR Frequency Range
FRC Fixed Reference Channel
HARQ Hybrid Automatic Repeat Request
HST High Speed Train
HST-SFN High Speed Train Single Frequency Network
LI Layer Indicator
MAC Medium Access Control
MCS Modulation and Coding Scheme
MIB Master Information Block
NR New Radio
NE-DC NR-E-UTRA Dual Connectivity
NR/5GC NR connected to 5GC NSA Non-Standalone Operation Mode
OCNG OFDMA Channel Noise Generator
OFDM Orthogonal Frequency Division Multiplexing
OFDMA Orthogonal Frequency Division Multiple Access
PBCH Physical Broadcast Channel
Pcell Primary Cell
PDCCH Physical Downlink Control Channel
PDSCH Physical Downlink Shared Channel
PMI Precoding Matrix Indicator
PRB Physical Resource Block
PRG Physical resource block group
PSS Primary Synchronization Signal
PTRS Phase Tracking Reference Signal
PUCCH Physical Uplink Control Channel
PUSCH Physical Uplink Shared Channel
QCL Quasi Co-location
RB Resource Block
RBG Resource Block Group
RE Resource Element
REG Resource Element Group
RI Rank Indicator
RRC Radio Resource Control
SA Standalone operation mode
SCS Subcarrier Spacing
SINR Signal-to-Interference-and-Noise Ratio
SNR Signal-to-Noise Ratio
SS Synchronization Signal
SSB Synchronization Signal Block
SSS Secondary Synchronization Signal
TCI Transmission Configuration Indicator
TDM Time division multiplexing
TTI Transmission Time Interval
UL Uplink
VRB Virtual Resource Block