3 Definitions of terms, symbols and abbreviations

38.1063GPPNR repeater radio transmission and receptionRelease 17TS

Tools: ARFCN - Frequency Conversion for 5G NR/LTE/UMTS/GSM

3.1 Terms

For the purposes of the present document, the terms given in 3GPP 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 3GPP TR 21.905 [1].

Antenna connector: connector at the conducted interface of the repeater type 1-C

Beam: beam (of the antenna) is the main lobe of the radiation pattern of an antenna array

Beam centre direction: direction equal to the geometric centre of the half-power contour of the beam

Beam direction pair: data set consisting of the beam centre direction and the related beam peak direction

Beam peak direction: direction where the maximum EIRP is found

Beamwidth: beam which has a half-power contour that is essentially elliptical, the half-power beamwidths in the two pattern cuts that respectively contain the major and minor axis of the ellipse

directional requirement: requirement which is applied in a specific direction within the OTA coverage range.

Equivalent isotropic radiated power: equivalent power radiated from an isotropic directivity device producing the same field intensity at a point of observation as the field intensity radiated in the direction of the same point of observation by the discussed device

Fractional bandwidth: fractional bandwidth FBW is defined as

gap between passbands: frequency gap between two consecutive passbands that belong to the same operating band, where the RF requirements in the gap are based on co-existence for un-coordinated operation

Inter-passband gap: The frequency gap between two supported consecutive passbands that belong to different operating bands.

Maximum passband output power: mean power level measured per passband at the antenna connector, during the transmitter ON state in a specified reference condition

Maximum passband TRP output power: mean power level measured per passband during the transmitter ON state in a specified reference condition and corresponding to the declared rated passband TRP output power (P_rated,p,,TRP)

Measurement bandwidth: RF bandwidth in which an emission level is specified

multi-band connector: Antenna Connector for a Multi-band repeater.

Multi-band repeater: Repeater Type 1-C whose antenna connector is associated with a transmitter and/or receiver that is characterized by the ability to process two or more passband(s) in common active RF components simultaneously, where at least one passband is configured at a different operating band than the other passband(s) and where this different operating band is not a sub-band or superseding-band of another supported operating band

Non-contiguous spectrum: spectrum consisting of two or more passbands separated by inter-passband gap(s).

Operating band: frequency range in which NR operates (paired or unpaired), that is defined with a specific set of technical requirements

OTA coverage range: a common range of directions within which OTA requirements that are neither specified in the OTA peak directions sets nor as TRP requirement are intended to be met

OTA peak directions set: set(s) of beam peak directions within which certain OTA requirements are intended to be met, where all OTA peak directions set(s) are subsets of the OTA coverage range

Passband: The frequency range in which the repeater operates in with operational configuration, this frequency range can correspond to one or several consecutive nominal channels, if they are not consecutive each subset of channels shall be considered as an individual passband, a repeater can have one or several passbands, all channels within the passband(s) shall belong to a single operator or collaborating operators.

passband edge: Frequency at the edge of the passband

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

Rated beam EIRP: For a declared beam and beam direction pair, the rated beam EIRP level is the maximum power that the repeater is declared to radiate at the associated beam peak direction during the transmitter ON period

Rated passband output power: mean power level associated with a passband the manufacturer has declared to be available at the antenna connector, during the transmitter ON period in a specified reference condition

Rated passband TRP output power: mean power level declared by the manufacturer per passband, that the manufacturer has declared to be available at the RIB during the transmitter ON state

Rated total output power: mean power level associated with a particular operating band the manufacturer has declared to be available at the antenna connector, during the transmitter ON state in a specified reference condition

Rated total TRP output power: mean power level associated with a particular operating band, that the manufacturer has declared to be available at the RIB during the transmitter ON state in a specified reference condition

Reference beam direction pair: Beam direction pair in the reference direction declared by the manufacturer.

Repeater type 1-C: Repeater operating at FR1 with a requirement set consisting only of conducted requirements defined at individual antenna connectors.

Repeater type 2-O: Repeater operating at FR2 with a requirement set consisting only of OTA requirements defined at the RIB

Requirement set: one of the NR requirements set as defined for NR repeater

single-band connector: Repeater type 1-C antenna connector supporting operation either in a single operating band only, or in multiple operating bands but does not meet the conditions for a multi-band connector.

Sub-band: A sub-band of an operating band contains a part of the uplink and downlink frequency range of the operating band.

sub-block: one contiguous allocated block of spectrum for transmission and reception by the repeater.

Superseding-band: A superseding-band of an operating band includes the whole of the uplink and downlink frequency range of the operating band.

Total radiated power: is the total power radiated by the antenna

NOTE: The total radiated power is the power radiating in all direction for two orthogonal polarizations. Total radiated power is defined in both the near-field region and the far-field region

Transmitter OFF state: Time period during which the repeater downlink or uplink is not allowed to transmit in the corresponding direction

3.2 Symbols

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

BW_Nominal Nominal channel bandwidth

BW_Passband Passband bandwidth

Δf Separation between the passband edge frequency and the nominal -3 dB point of the measuring filter closest to the carrier frequency

Δf_max f_offset_max minus half of the bandwidth of the measuring filter

Δf_OBUE Maximum offset of the operating band unwanted emissions mask from the operating band edgeF_DL,lowThe lowest frequency of the downlink operating band

F_DL,highThe highest frequency of the downlink operating band

F_FBWhighHighest supported frequency within supportedoperating band, for which fractional bandwidth support was declared

F_FBWlow Lowest supported frequency within supported operating band, for which fractional bandwidth support was declared

F_filter Filter centre frequency

F_offset,high Frequency offset from F_C,high to the upper passband edge

F_offset,low Frequency offset from F_C,low to the lower passband edge

f_offset Separation between the passband edge frequency and the centre of the measuring

f_offset_maxThe offset to the frequency Δf_OBUE outside the operating band

F_step,X Frequency steps for the OTA transmitter spurious emissions (Category B)

F_UL,lowThe lowest frequency of the uplink operating band

F_UL,highThe highest frequency of the uplink operating band

P_{EM,n50/n75,ind} Declared emission level for Band n50/n75; ind = a, b

P_rated,p,AC Rated passband output power per antenna connector

P_rated,t,AC Rated total output power declared per antenna connector

P_rated,p,EIRPRated passband EIRP output power

P_rated,p,TRPRated passband TRP output power declared per RIB

P_rated,t,TRPRated total TRP output power declared per RIB

P_in,p,AC Input power intended to produce the maximum rated output power (P_rated,p,AC) at the antenna connector

P_in,p,EIRP Input power intended to produce the maximum rated output power (P_rated,p,TRP) at the RIB

P_{rated,out,FBWhigh}The rated output EIRP for the higher supported frequency range within supported operating band, for which fractional bandwidth support was declared

P_{rated,out,FBWlow}The rated output EIRP for the lower supported frequency range within supported operating band, for which fractional bandwidth support was declared

P_max,p,ACMaximum passband output power measured per antenna connector

P_max,p,EIRPMaximum passband EIRP output power when repeater is configured at the rated passband TRP output power (P_rated,p,TRP)

P_max,p,TRPMaximum passband TRP output power measured per RIB

W_gapInter passband Bandwidth gap size

3.3 Abbreviations

For the purposes of the present document, the abbreviations given in 3GPP 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 3GPP TR 21.905 [1].

ACLR Adjacent Channel Leakage Ratio

AoA Angle of Arrival

BW Bandwidth

CACLR Cumulative ACLR

CP-OFDM Cyclic Prefix-OFDM

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

DL Downlink

EIRP Effective Isotropic Radiated Power

EVM Error Vector Magnitude

FBW Fractional Bandwidth

FR Frequency Range

ITU‑R Radiocommunication Sector of the International Telecommunication Union

LA Local Area

MR Medium Range

NR New Radio

OBUE Operating Band Unwanted Emissions

OOB Out-of-band

OTA Over-The-Air

QAM Quadrature Amplitude Modulation

RF Radio Frequency

RIB Radiated Interface Boundary

RX Receiver

SCS Sub-Carrier Spacing

TX Transmitter

TRP Total Radiated Power

UL Uplink

WA Wide Area