3 Definitions, symbols and abbreviations

38.521-23GPPNRPart 2: Range 2 StandaloneRadio transmission and receptionRelease 17TSUser Equipment (UE) conformance specification

3.1 Definitions

For the purposes of the present document, the terms and definitions 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.

Beam correspondence: the ability of the UE to select a suitable beam for UL transmission based on DL measurements with or without relying on UL beam sweeping.

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.

NOTE: Carriers aggregated in each band can be contiguous or non-contiguous.

Cumulative aggregated channel bandwidth: The cumulative aggregated channel bandwidth is defined as the frequency band from the lowest edge of the lowest CC to the upper edge of the highest CC of all UL and DL configured CCs.

EIRP(Link=TX beam peak direction, Meas=Link angle): measurement of the EIRP of the UE such that the measurement angle is aligned with the beam peak direction within an acceptable measurement error uncertainty. EIRP (indicator to be measured) can be replaced by Frequency, EVM, carrier Leakage, In-band emission and OBW.

EIRP(Link=Link angle, Meas=Link angle): measurement of the UE such that the link angle is aligned with the measurement angle. EIRP (indicator to be measured) can be replaced by EIS, Frequency, EVM, carrier Leakage, In-band emission and OBW.

EIRP(Link=Spherical coverage grid, Meas=Link angle): measurement of the EIRP spherical coverage of the UE such that the EIRP link and measurement angles are aligned with the directions along the spherical coverage grid within an acceptable measurement error uncertainty. Alternatively, the spherical coverage grid can be replaced by the beam peak search grid as the results from the beam peak search can be re-used for spherical coverage.

EIS (effective isotropic sensitivity): sensitivity for an isotropic directivity device equivalent to the sensitivity of the discussed device exposed to an incoming wave from a defined AoA

NOTE 1: The sensitivity is the minimum received power level at which specific requirement is met.

NOTE 2: Isotropic directivity is equal in all directions (i.e. 0 dBi).

EIS(Link=RX beam peak direction, Meas=Link angle): measurement of the EIS of the UE such that the measurement angle is aligned with the RX beam peak direction within an acceptable measurement error uncertainty.

Fallback group: Group of carrier aggregation bandwidth classes for which it is mandatory for a UE to be able to fallback to lower order CA bandwidth class configuration. It is not mandatory for a UE to be able to fallback to lower order CA bandwidth class configuration that belongs to a different fallback group.

IBM (Independent Beam Management): A UE that supports inter-band CA with IBM selects its DL Rx beam(s) for all CCs in each configured band based on DL reference signals measurements made in that band.

Inter-band carrier aggregation: Carrier aggregation of component carriers in different operating bands.

NOTE: Carriers aggregated in each band can be contiguous or non-contiguous.

Intra-band contiguous carrier aggregation: Contiguous carriers aggregated in the same operating band.

Intra-band non-contiguous carrier aggregation: Non-contiguous carriers aggregated in the same operating band.

Link angle: a DL-signal AoA from the view point of the UE, as described in Annex N. If the beam lock function is used to lock the UE beam(s), the link angle can become any arbitrary AoA once the beam lock has been activated.

Measurement angle: the angle of measurement of the desired metric from the view point of the UE, as described in Annex N.

radiated interface boundary: operating band specific radiated requirements reference point where the radiated requirements apply.

radiated requirements reference point: for the RF measurement setup, the radiated requirements reference point is located at the centre of the quiet zone. From the UE perspective the reference point is the input of the UE antenna array.

RX beam peak direction: direction where the maximum total component of RSRP and thus best total component of EIS is found.

Sub-block: This is one contiguous allocated block of spectrum for transmission and reception by the same UE. There may be multiple instances of sub-blocks within an RF bandwidth.

TRP(Link=TX beam peak direction, Meas=TRP grid): measurement of the TRP of the UE such that the measurement angles are aligned with the directions of the TRP grid points within an acceptable measurement uncertainty while the link angle is aligned with the TX beam peak direction

NOTE: For requirements based on EIRP/EIS, the radiated interface boundary is associated to the far-field region.

TX beam peak direction: direction where the maximum total component of EIRP is found.

UE transmission bandwidth configuration: Set of resource blocks located within the UE channel bandwidth which may be used for transmitting or receiving by the UE.

Vehicular UE: A UE embedded in a vehicle.

3.2 Symbols

For the purposes of the present document, the following symbols apply:

∆EIRP_BC The beam correspondence tolerance, where ∆EIRP_BC = EIRP₂ – EIRP₁

ΔF_Global Granularity of the global frequency raster

ΔF_Raster Band dependent channel raster granularity

Δf_OOB Δ Frequency of Out Of Band emission

ΔMB_P,n Allowed relaxation to each, minimum peak EIRP and reference sensitivity due to support for multi-band operation, per band in a combination of supported bands

ΔMB_S,n Allowed relaxation to each, EIRP spherical coverage and EIS spherical coverage due to support for multi-band operation, per band in a combination of supported bands

Δ_RB The starting frequency offset between the allocated RB and the measured non-allocated RB

ΔR_IB Allowed reference sensitivity relaxation due to support for inter-band CA operation

ΔR_IB,P,n Allowed relaxation to each, minimum peak EIRP and reference sensitivity due to support for inter-band CA operation, per band in a combination of supported bands

ΔR_IB,S,n Allowed relaxation to each, EIRP spherical coverage and EIS spherical coverage due to support for inter-band CA operation, per band in a combination of supported bands

∑MB_P Total allowed relaxation to each, minimum peak EIRP and reference sensitivity due to support for multi-band operation, for all bands in a combination of supported bands

∑MB_S Total allowed relaxation to each, EIRP spherical coverage and EIS spherical coverage due to support for multi-band operation, for all bands in a combination of supported bands

BW_Channel Channel bandwidth

BW_{Channel_CA} Aggregated channel bandwidth, expressed in MHz.

BW_GB max( BW_{GB,Channel(k)} )

BW_{GB,Channel(k)} Minimum guardband defined in clause 5.3A.2 of carrier k

BW_interferer Bandwidth of the interferer

Ceil(x) Rounding upwards; ceil(x) is the smallest integer such that ceil(x) ≥ x

EIRP_max The applicable maximum EIRP as specified in clause 6.2.1

EIRP₁ The measured total EIRP based on the beam the UE chooses autonomously (corresponding beam) to transmit in the direction of the incoming DL signal, which is based on beam correspondence without relying on UL beam sweeping

EIRP₂ The measured total EIRP based on the beam yielding highest EIRP in a given direction, which is based on beam correspondence with relying on UL beam sweeping

F_C RF reference frequency for the carrier center on the channel raster, given in table 5.4.2.2-1

F_{C,block, high} Fc of the highest transmitted/received carrier in a sub-block.

F_{C,block, low} Fc of the lowest transmitted/received carrier in a sub-block.

F_{C, high} The Fc of the highest carrier, expressed in MHz.

F_{C, low} The Fc of the lowest carrier, expressed in MHz.

F_{DL_high} The highest frequency of the downlink operating band

F_{DL_low} The lowest frequency of the downlink operating band

F_{edge,block,high} The upper sub-block edge, where F_{edge,block,high} = F_C,block,high + F_{offset, high.}

F_{edge,block,low} The lower sub-block edge, where F_{edge,block,low} = F_C,block,low – F_{offset, low.}

F_{edge, high} The upper edge of Aggregated Channel Bandwidth, expressed in MHz. F_{edge, high} = F_{C, high} + F_{offset, high.}

F_{edge, low} The lower edge of Aggregated Channel Bandwidth, expressed in MHz. F_{edge, low} = F_{C, low} – F_{offset, low.}

F_Interferer Frequency of the interferer

F_Interferer (offset) Frequency offset of the interferer (between the center frequency of the interferer and the carrier frequency of the carrier measured)

F_Ioffset Frequency offset of the interferer (between the center frequency of the interferer and the closest edge of the carrier measured)

Floor(x) Rounding downwards; floor(x) is the greatest integer such that floor(x) ≤ x

F_OOB The boundary between the NR out of band emission and spurious emission domains

F_{offset, high} Frequency offset from F_{C, high} to the upper UE RF Bandwidth edge, or from F_{C,block, high} to the upper sub-block edge

F_{offset, low} Frequency offset from F_{C, low} to the lower UE RF Bandwidth edge, or from F_{C,block, low} to the lower sub-block edge

F_REF RF reference frequency

F_REF-Offs Offset used for calculating F_REF

F_{UL_high} The highest frequency of the uplink operating band

F_{UL_low} The lowest frequency of the uplink operating band

F_{UL_Meas} The sub-carrier frequency for which the equalizer coefficient is evaluated

F_center The center frequency of an allocated block of PRBs

GB_Channel Minimum guardband defined in clause 5.3.3

L_CRB Transmission bandwidth which represents the length of a contiguous resource block allocation expressed in units of resources blocks

L_CRB,Max Maximum number of RB for a given Channel bandwidth and sub-carrier spacing

Max() The largest of given numbers

Min() The smallest of given numbers

MPR_f,c Maximum output power reduction for carrier f of serving cell c

MPR_narrow Maximum output power reduction due to narrow PRB allocation

MPR_WT Maximum power reduction due to modulation orders, transmit bandwidth configurations, waveform types

NR_ACLR NR ACLR

N_RB Transmission bandwidth configuration, expressed in units of resource blocks

N_RB,high Transmission bandwidth configurations according to Table 5.3.2-1 for the highest assigned component carrier in clause 5.3A.1

N_RB,low Transmission bandwidth configurations according to Table 5.3.2-1 for the lowest assigned component carrier in clause 5.3A.1

N_REF NR Absolute Radio Frequency Channel Number (NR-ARFCN)

N_REF-Offs Offset used for calculating N_REF

n_PRB Physical resource block number

P_CMAX The configured maximum UE output power

P_CMAX, _f, _c The configured maximum UE output power for carrier f of serving cell c

P_int The intermediate power point as defined in Table 6.3.4.2.3-2

P_Interferer Modulated mean power of the interferer

P_max The maximum UE output power as specified in clause 6.2.1

P_min The minimum UE output power as specified in clause 6.3.1

P_PowerClass Nominal UE power class (i.e., no tolerance) as specified in clause 6.2.1

P_RB The transmitted power per allocated RB, measured in dBm

P_TMAX,f,c The measured total radiated power for carrier f of serving cell c

P_UMAX The measured configured maximum UE output power

Pw Power of a wanted DL signal

P-MPR_f,c The Power Management UE Maximum Power Reduction for carrier f of serving cell c

RB_start Indicates the lowest RB index of transmitted resource blocks

SCS_high SCS for the highest assigned component carrier in clause 5.3A.1

SCS_low SCS for the lowest assigned component carrier in clause 5.3A.1

SS_REF SS block reference frequency position

TRP_max The maximum TRP for the UE power class as specified in clause 6.2.1

T(∆P) The tolerance T(∆P) for applicable values of ∆P (values in dB)

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].

ACLR Adjacent Channel Leakage Ratio

ACS Adjacent Channel Selectivity

AoA Angle of Arrival

A-MPR Additional Maximum Power Reduction

BCS Bandwidth Combination Set

BPSK Binary Phase-Shift Keying

BS Base Station

BW Bandwidth

BWP Bandwidth Part

CA Carrier Aggregation

CABW Cumulative Aggregated Channel Bandwidth

CA_nX-nY Inter-band CA of component carrier(s) in one sub-block within Band nX and component carrier(s) in one sub-block within Band nY where nX and nY are the applicable NR operating band

CC Component Carrier

CDF Cumulative Distribution Function

CP-OFDM Cyclic Prefix-OFDM

CW Continuous Wave

DFT-s-OFDM Discrete Fourier Transform-spread-OFDM

DL Downlink

DM-RS Demodulation Reference Signal

DTX Discontinuous Transmission

DUT Device Under Test

EIRP Effective Isotropic Radiated Power

EIS Effective Isotropic Sensitivity

EVM Error Vector Magnitude

FR Frequency Range

FWA Fixed Wireless Access

GSCN Global Synchronization Channel Number

IBB In-band Blocking

IBM Independent Beam Management

IDFT Inverse Discrete Fourier Transformation

ITU‑R Radio communication Sector of the International Telecommunication Union

MBW Measurement bandwidth defined for the protected band

MPR Allowed maximum power reduction

NR New Radio

NR/5GC NR connected to 5GC

NR-ARFCN NR Absolute Radio Frequency Channel Number

NS Network Signalling

OCNG OFDMA Channel Noise Generator

OOB Out-of-band

OTA Over The Air

PRB Physical Resource Block

P-MPR Power Management Maximum Power Reduction

QAM Quadrature Amplitude Modulation

RB Resource Blocks

REFSENS Reference Sensitivity

RF Radio Frequency

RIB Radiated Interface Boundary

RMS Root Mean Square (value)

RSRP Reference Signal Receiving Power

Rx Receiver

SCS Subcarrier Spacing

SEM Spectrum Emission Mask

SRS Sounding Reference Symbol

SS Synchronization Symbol / System Simulator

TDD Time Division Duplex

TPC Transmission Power Control

TRP Total Radiated Power

Tx Transmitter

UE User Equipment

UL Uplink

UL MIMO Uplink Multiple Antenna transmission

ULFPTx Uplink Full Power Transmission