3 Definitions of terms, symbols and abbreviations

36.1023GPPEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TSUser Equipment (UE) radio transmission and reception for satellite access

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].

Channel edge: The lowest and highest frequency of the carrier, separated by the channel bandwidth.

Channel bandwidth: The RF bandwidth supporting a single E-UTRA RF carrier with the transmission bandwidth configured in the uplink or downlink of a cell. The channel bandwidth is measured in MHz and is used as a reference for transmitter and receiver RF requirements.

Category NB1/NB2 stand-alone operation: category NB1/NB2 is operating standalone when it utilizes its own spectrum, for example the spectrum used by GERAN systems as a replacement of one or more GSM carriers, as well as scattered spectrum for potential IoT deployment.

Category NB1/NB2 guard band operation: category NB1/NB2 is operating in guard band when it utilizes the unused resource block(s) within a E-UTRA carrier’s guard-band.

Category NB1/NB2 in-band operation: category NB1/NB2 is operating in-band when it utilizes the resource block(s) within a normal E-UTRA carrier or within a normal NR carrier plus 15 kHz at each edge (and not within NR minimum guard band).

Geosynchronous Earth Orbit: Earth-centred orbit at approximately 35786 kilometres above Earth’s surface and synchronised with Earth’s rotation. A geostationary orbit is a non-inclined geosynchronous orbit, i.e. in the Earth’s equator plane.

Low Earth Orbit: Orbit around the Earth with an altitude between 300 km, and 1500 km.

Satellite: A space-borne vehicle embarking a bent pipe payload or a regenerative payload telecommunication transmitter, placed into Low-Earth Orbit (LEO), Medium-Earth Orbit (MEO), or Geostationary Earth Orbit (GEO).

Satellite Access Node: see definition in TS 36.108 [2].

sTTI: A transmission time interval (TTI) of either one slot or one subslot as defined in TS 36.211 [3] on either uplink or downlink.

3.2 Symbols

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

ΔF_Raster Band dependent channel raster granularity

BW_Channel Channel bandwidth

F Frequency

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

F_Interferer Frequency of the interferer

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

F_C Frequency of the carrier centre frequency

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

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

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

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

F_OOB The boundary between the E-UTRA out of band emission and spurious emission domains.

L_Ctone Transmission bandwidth which represents the length of a contiguous sub-carrier allocation expressed in units of tones

N_DL Downlink EARFCN

N_Offs-DL Offset used for calculating downlink EARFCN

N_Offs-UL Offset used for calculating uplink EARFCN

N_RB Transmission bandwidth configuration, expressed in units of resource blocks

N_{RB_alloc} Total number of simultaneously transmitted resource blocks in Channel bandwidth or Aggregated Channel Bandwidth.

N_tone Transmission bandwidth configuration for category NB1 and NB2, expressed in units of tones.

N_{tone 3.75kHz} Transmission bandwidth configuration for category NB1 and NB2 with 3.75 kHz sub-carrier spacing, expressed in units of tones.

N_{tone 15kHz} Transmission bandwidth configuration for category NB1 and NB2 with 15 kHz sub-carrier spacing, expressed in units of tones.

N_UL Uplink EARFCN.

P_CMAX The configured maximum UE output power.

P_Interferer Modulated mean power of the interferer

P_PowerClass P_PowerClass is the nominal UE power (i.e., no tolerance).

P_{PowerClass_Default} P_{PowerClass_Default} is the default nominal UE power (i.e., no tolerance) for the band.

P_UMAX The measured configured maximum UE output power.

Puw Power of an unwanted DL signal

Pw Power of a wanted DL signal

Δf_OOB Δ Frequency of Out Of Band emission

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

A-MPR Additional Maximum Power Reduction

AWGN Additive White Gaussian Noise

BW Bandwidth

CW Continuous Wave

DL Downlink

EARFCN E-UTRA Absolute Radio Frequency Channel Number

E-UTRA Evolved UMTS Terrestrial Radio Access

EUTRAN Evolved UMTS Terrestrial Radio Access Network

EVM Error Vector Magnitude

FDD Frequency Division Duplex

GEO Geosynchronous Earth Orbit

ITU-R Radiocommunication Sector of the International Telecommunication Union

LEO Low Earth Orbit

HD-FDD Half- Duplex FDD

MEO Medium Earth Orbit

MPR Maximum Power Reduction

OCNG OFDMA Channel Noise Generator

OFDMA Orthogonal Frequency Division Multiple Access

OOB Out-of-band

QAM Quadrature Amplitude Modulation

RAN Radio Access Network

RE Resource Element

REFSENS Reference Sensitivity power level

RF Radio Frequency

UE User Equipment

UL Uplink

UMTS Universal Mobile Telecommunications System

UTRA UMTS Terrestrial Radio Access

UTRAN UMTS Terrestrial Radio Access Network