3 Definitions, symbols and abbreviations
36.1043GPPBase Station (BS) radio transmission and receptionEvolved Universal Terrestrial Radio Access (E-UTRA)Release 18TS
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: RF bandwidth in which a base station transmits and/or receives multiple contiguously aggregated carriers.
NOTE: The Aggregated Channel Bandwidth is measured in MHz.
Base station receive period: time during which the base station is receiving data subframes or UpPTS.
Base Station RF Bandwidth: RF bandwidth in which a base station transmits and/or receives single or multiple carrier(s) within a supported operating band.
NOTE: In single E-UTRA carrier operation, the Base Station RF Bandwidth is equal to the channel bandwidth.
Base Station RF Bandwidth edge: frequency of one of the edges of the Base Station RF Bandwidth.
Carrier: modulated waveform conveying the E-UTRA or UTRA physical channels
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.
NOTE: Carrier aggregation band(s) for an E-UTRA BS is declared by the manufacturer according to the designations in Tables 5.5-2 to 5.5-4.
Channel bandwidth: RF bandwidth supporting a single E-UTRA RF carrier with the transmission bandwidth configured in the uplink or downlink of a cell.
NOTE: The channel bandwidth is measured in MHz and is used as a reference for transmitter and receiver RF requirements.
Channel edge: lowest or highest frequency of the E-UTRA carrier, separated by the channel bandwidth.
Contiguous carriers: set of two or more carriers configured in a spectrum block where there are no RF requirements based on co-existence for un-coordinated operation within the spectrum block.
Contiguous spectrum: spectrum consisting of a contiguous block of spectrum with no sub-block gap(s).
DL RS power: resource element power of Downlink Reference Symbol.
DL NRS power: resource element power of Downlink Narrowband Reference Signal.
Downlink operating band: part of the operating band designated for downlink.
Enhanced performance requirements type A: This defines performance requirements assuming baseline receiver as demodulation reference signal based linear minimum mean square error interference rejection combining.
Enhanced performance requirements type B: This defines performance requirements assuming baseline receiver as code word level interference cancellation for intra-cell inter-user interference plus demodulation reference signal based linear minimum mean square error interference rejection combining for inter-cell interference.
Highest carrier: carrier with the highest carrier centre frequency transmitted/received in a specified operating band.
Inter RF Bandwidth gap: frequency gap between two consecutive Base Station RF Bandwidths that are placed within two supported operating bands.
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.
Inter-band gap: The frequency gap between two supported consecutive operating bands.
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.
Lower sub-block edge: frequency at the lower edge of one sub-block.
NOTE: It is used as a frequency reference point for both transmitter and receiver requirements.
Lowest carrier: carrier with the lowest carrier centre frequency transmitted/received in a specified operating band.
Maximum output power: mean power level per carrier of the base station measured at the antenna connector in a specified reference condition.
Maximum throughput: maximum achievable throughput for a reference measurement channel.
Mean power: power measured in the channel bandwidth of the carrier.
NOTE: The period of measurement shall be at least one subframe (1ms), unless otherwise stated.
Measurement bandwidth: RF bandwidth in which an emission level is specified.
Multi-band base station: base station characterized by the ability of its transmitter and/or receiver to process two or more carriers in common active RF components simultaneously, where at least one carrier is configured at a different operating band (which is not a sub-band or superseding-band of another supported operating band) than the other carrier(s).
Multi-band transmitter: transmitter characterized by the ability to process two or more carriers in common active RF components simultaneously, where at least one carrier is configured at a different operating band (which is not a sub-band or superseding-band of another supported operating band) than the other carrier(s).
Multi-band receiver: receiver characterized by the ability to process two or more carriers in common active RF components simultaneously, where at least one carrier is configured at a different operating band (which is not a sub-band or superseding-band of another supported operating band) than the other carrier(s).
Multi-carrier transmission configuration: set of one or more contiguous or non-contiguous carriers that a BS is able to transmit simultaneously according to the manufacturer’s specification.
NB-IoT In-band operation: NB-IoT is operating in-band when it utilizes the resource block(s) within a normal E-UTRA carrier
NB-IoT guard band operation: NB-IoT is operating in guard band when it utilizes the unused resource block(s) within a E-UTRA carrier’s guard-band.
NB-IoT standalone operation: NB-IoT is operating standalone when it utilizes its own spectrum, for example the spectrum currently being used by GERAN systems as a replacement of one or more GSM carriers, as well as scattered spectrum for potential IoT deployment.
Non-contiguous spectrum: spectrum consisting of two or more sub-blocks separated by sub-block gap(s).
Occupied bandwidth: width of a frequency band such that, below the lower and above the upper frequency limits, the mean powers emitted are each equal to a specified percentage β/2 of the total mean power of a given emission.
Operating band: frequency range in which E-UTRA operates (paired or unpaired), that is defined with a specific set of technical requirements.
NOTE: The operating band(s) for an E-UTRA BS is declared by the manufacturer according to the designations in table 5.5-1.
Output power: mean power of one carrier of the base station, delivered to a load with resistance equal to the nominal load impedance of the transmitter.
Radio Bandwidth: frequency difference between the upper edge of the highest used carrier and the lower edge of the lowest used carrier.
Rated output power: mean power level per carrier that the manufacturer has declared to be available at the antenna connector during the transmitter ON period.
RE power control dynamic range: difference between the power of a RE and the average RE power for a BS at maximum output power for a specified reference condition.
RRC filtered mean power: mean power of an UTRA carrier as measured through a root raised cosine filter with roll-off factor and a bandwidth equal to the chip rate of the radio access mode.
NOTE 1: The RRC filtered mean power of a perfectly modulated UTRA signal is 0.246 dB lower than the mean power of the same signal.
sTTI: A transmission time interval (TTI) of either one slot or one subslot as defined in [10] on either uplink or downlink.
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 same base station.
NOTE: There may be multiple instances of sub-blocks within aBase Station RF Bandwidth.
Sub-block bandwidth: bandwidth of one sub-block.
Sub-block gap: frequency gap between two consecutive sub-blocks within a Bae Station RF Bandwidth, where the RF requirements in the gap are based on co-existence for un-coordinated operation.
Superseding-band: A superseding-band of an operating band includes the whole of the uplink and downlink frequency range of the operating band.
Synchronized operation: operation of TDD in two different systems, where no simultaneous uplink and downlink occur.
Throughput: number of payload bits successfully received per second for a reference measurement channel in a specified reference condition.
Total power dynamic range: difference between the maximum and the minimum transmit power of an OFDM symbol for a specified reference condition.
Transmission bandwidth: RF Bandwidth of an instantaneous transmission from a UE or BS, measured in resource block units.
Transmission bandwidth configuration: highest transmission bandwidth allowed for uplink or downlink in a given channel bandwidth, measured in resource block units.
Transmitter ON period: time period during which the BS transmitter is transmitting data and/or reference symbols, i.e. data subframes or DwPTS.
Transmitter OFF period: time period during which the BS transmitter is not allowed to transmit.
Transmitter transient period: time period during which the transmitter is changing from the OFF period to the ON period or vice versa.
Unsynchronized operation: operation of TDD in two different systems, where the conditions for synchronized operation are not met.
Uplink operating band: part of the operating band designated for uplink.
Upper sub-block edge: frequency at the upper edge of one sub-block.
NOTE: It is used as a frequency reference point for both transmitter and receiver requirements.
3.2 Symbols
For the purposes of the present document, the following symbols apply:
Roll-off factor
Percentage of the mean transmitted power emitted outside the occupied bandwidth on the assigned channel
BW Bandwidth
BWChannel Channel bandwidth
BWChannel_CA Aggregated Channel Bandwidth, expressed in MHz. BWChannel_CA= Fedge_high– Fedge_low.
BWChannel,block Sub-block bandwidth, expressed in MHz. BWChannel,block= Fedge,block,high– Fedge,block,low.
BWConfig Transmission bandwidth configuration, expressed in MHz, where BWConfig = NRB x 180 kHz in the uplink and BWConfig = 15 kHz + NRB x 180 kHz in the downlink.
CA_X Intra-band contiguous CA of component carriers in one sub-block within band X where X is the applicable E-UTRA operating band
CA_X-X Intra-band non-contiguous CA of component carriers in two sub-blocks within band X where X is the applicable E-UTRA operating band
CA_X-Y Inter-band CA of component carrier(s) in one sub-block within band X and component carrier(s) in one sub-block within Band Y where X and Y are the applicable E-UTRA operating bands
CA_X-X-Y CA of component carriers in two sub-blocks within Band X and component carrier(s) in one sub-block within Band Y where X and Y are the applicable E-UTRA operating bands
f Frequency
Δf Separation between the channel edge frequency and the nominal -3dB point of the measuring filter closest to the carrier frequency
Δfmax The largest value of Δf used for defining the requirement
FC Carrier centre frequency
FC,block, high Centre frequency of the highest transmitted/received carrier in a sub-block.
FC,block, low Centre frequency of the lowest transmitted/received carrier in a sub-block.
FC_low The carrier centre frequency of the lowest carrier, expressed in MHz.
FC_high The carrier centre frequency of the highest carrier, expressed in MHz.
Fedge_low The lower edge of Aggregated Channel Bandwidth, expressed in MHz. Fedge_low = FC_low – Foffset.
Fedge_high The upper edge of Aggregated Channel Bandwidth, expressed in MHz. Fedge_high = FC_high + Foffset.
Fedge,block,low The lower sub-block edge, where Fedge,block,low = FC,block,low – Foffset.
Fedge,block,high The upper sub-block edge, where Fedge,block,high = FC,block,high + Foffset.
Foffset Frequency offset from FC_high to the upper Base Station RF Bandwidth edge, or from F C,block, high to the upper sub-block edge, or FC_low to the lower Base Station RF Bandwidth edge, or from FC,block, low to the lower sub-block edge.
Ffilter Filter centre frequency
f_offset Separation between the channel edge frequency and the centre of the measuring filter
f_offsetmax The maximum value of f_offset used for defining the requirement
FDL_low The lowest frequency of the downlink operating band
FDL_high The highest frequency of the downlink operating band
FUL_low The lowest frequency of the uplink operating band
FUL_high The highest frequency of the uplink operating band
Gant Net antenna gain
MDL Offset of NB-IoT Downlink channel number to Downlink EARFCN
MUL Offset of NB-IoT Uplink channel number to Uplink EARFCN
Nant Number of transmitter antennas
NDL Downlink EARFCN
NOffs-DL Offset used for calculating downlink EARFCN
NOffs-UL Offset used for calculating uplink EARFCN
NCS Number of Cyclic shifts for preamble generation in PRACH
NRB Transmission bandwidth configuration, expressed in units of resource blocks
NUL Uplink EARFCN
P10MHz Maximum output Power within 10 MHz
PEIRP,N EIRP level for channel N
PEIRP,N,MAX Maximum EIRP level for channel N
PEM,N Declared emission level for channel N
PEM,B32,B75,B76,ind Declared emission level in Band 32, Band 75 and Band 76, ind=a, b, c
PEM,B32,ind Declared emission level in Band 32, ind=d, e
PEM,B50,B74,B75,ind Declared emission level for Band 50, Band 74 and Band 75, ind=a,b
PEM,B54,ind Declared emission level in Band 54, ind=a,b,c,d,e,f
Pmax,c Maximum carrier output power
Pout Output power (per carrier)
Prated,c Rated output power (per carrier)
PREFSENS Reference Sensitivity power level
TA Timing advance command, as defined in [11]
Basic time unit, as defined in [10]
Wgap Sub-block gap or Inter RF Bandwidth gap size
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
ACK Acknowledgement (in HARQ protocols)
ACS Adjacent Channel Selectivity
AWGN Additive White Gaussian Noise
BS Base Station
CA Carrier Aggregation
CACLR Cumulative ACLR
CP Cyclic prefix
CRC Cyclic Redundancy Check
CW Continuous Wave
DC Direct Current
DFT Discrete Fourier Transformation
DIP Dominant Interferer Proportion
DTT Digital Terrestrial Television
DTX Discontinuous Transmission
DwPTS Downlink part of the special subframe (for TDD operation)
EARFCN E-UTRA Absolute Radio Frequency Channel Number
EIRP Effective Isotropic Radiated Power
EPA Extended Pedestrian A model
ETU Extended Typical Urban model
E-UTRA Evolved UTRA
EVA Extended Vehicular A model
EVM Error Vector Magnitude
FDD Frequency Division Duplex
FFT Fast Fourier Transformation
FRC Fixed Reference Channel
GP Guard Period (for TDD operation)
GSM Global System for Mobile communications
HARQ Hybrid Automatic Repeat Request
ICS In-Channel Selectivity
ITU‑R Radiocommunication Sector of the ITU
LA Local Area
LNA Low Noise Amplifier
MCS Modulation and Coding Scheme
MFCN Mobile/Fixed Communications Network
MR Medium Range
NB-IoT Narrowband – Internet of Things
NPDSCH Narrowband Physical Downlink Shared Channel
NPUSCH Narrowband Physical Uplink Shared Channel
NRS Narrowband Refernce Signal
OFDM Orthogonal Frequency Division Multiplex
OOB Out-of-band
PA Power Amplifier
PBCH Physical Broadcast Channel
PDCCH Physical Downlink Control Channel
PDSCH Physical Downlink Shared Channel
PUSCH Physical Uplink Shared Channel
PUCCH Physical Uplink Control Channel
PRACH Physical Random Access Channel
QAM Quadrature Amplitude Modulation
QPSK Quadrature Phase-Shift Keying
RAT Radio Access Technology
RB Resource Block
RE Resource Element
RF Radio Frequency
RMS Root Mean Square (value)
RS Reference Symbol
RX Receiver
RRC Root Raised Cosine
SINR Signal-to-Interference-and-Noise Ratio
SNR Signal-to-Noise Ratio
sPDCCH shortened Physical Downlink Control Channel
sPDSCH shortened Physical Downlink Shared Channel
TA Timing Advance
TDD Time Division Duplex
TX Transmitter
UE User Equipment
WA Wide Area