3 Definitions, symbols and abbreviations
37.571-13GPPPart 1: Conformance test specificationRelease 16TSUser Equipment (UE) conformance specification for UE positioning
For the purposes of the present document, the terms and definitions given in TR 21.905 , 3GPP TR 25.990 , TS 36.101 , 3GPP TS 36.104  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 .
Horizontal Dilution Of Precision (HDOP): measure of position determination accuracy that is a function of the geometrical layout of the satellites used for the fix, relative to the receiver antenna
For the purposes of the present document, the abbreviations given in TR 21.905 , 3GPP TR 25.990  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 .
B1I BeiDou B1I navigation signal with carrier frequency of 1561.098 MHz
B1C BeiDou B1C navigation signal with carrier frequency of 1575.420 MHz.
E1 Galileo E1 navigation signal with carrier frequency of 1575.420 MHz.
E5 Galileo E5 navigation signal with carrier frequency of 1191.795 MHz.
E6 Galileo E6 navigation signal with carrier frequency of 1278.750 MHz.
G1 GLONASS navigation signal in the L1 sub-bands with carrier frequencies 1602 MHz ± k × 562.5 kHz.
G2 GLONASS navigation signal in the L2 sub-bands with carrier frequencies 1246 MHz ± k × 437.5 kHz.
k GLONASS channel number, k = -7…13.
L1 C/A GPS or QZSS L1 navigation signal carrying the Coarse/Acquisition code with carrier frequency of 1575.420 MHz.
L1C GPS or QZSS L1 Civil navigation signal with carrier frequency of 1575.420 MHz.
L2C GPS or QZSS L2 Civil navigation signal with carrier frequency of 1227.600 MHz.
L5 GPS or QZSS L5 navigation signal with carrier frequency of 1176.450 MHz.
PRP Received (linear) average power of the resource elements that carry E-UTRA PRS, measured at the UE antenna connector.
G Geometry Matrix.
Measured pseudo-range of satellite i of GNSSm.
W Weighting Matrix.
Line of sight unit vector from the user to the satellite i of GNSSm.
State vector of user position and clock bias.
TS Basic time unit, defined in TS 36.211 , clause 4.
Ês Received energy per RE (power normalized to the subcarrier spacing) during the useful part of the symbol, i.e. excluding the cyclic prefix, at the UE antenna connector.
Io The total received power density, including signal and interference, as measured at the UE antenna connector.
Iot The received power spectral density of the total noise and interference for a certain RE (power integrated over the RE and normalized to the subcarrier spacing) as measured at the UE antenna connector.
The power spectral density of a white noise source (average power per RE normalised to the subcarrier spacing), simulating interference from cells that are not defined in a test procedure, as measured at the UE antenna connector.
The ratio of the average received energy per PRS RE during the useful part of the symbol to the average received power spectral density of the total noise and interference for this RE, where the ratio is measured over all REs which carry PRS.
For the purposes of the present document, the following abbreviations apply:
A-GANSS Assisted Galileo and Additional Navigation Satellite Systems
A-GLONASS Assisted– GLObal’naya NAvigatsionnaya Sputnikovaya Sistema (English: Global Navigation Satellite System)
A-GNSS Assisted Global Navigation Satellite System
A-GPS Assisted – Global Positioning System
AP Access Point
AWGN Additive White Gaussian Noise
BDS BeiDou Navigation Satellite System
BLE Bluetooth Low Energy
BSS Bluetooth System Simulator
BSSID Basic Service Set IDentification
DL-AoD Downlink Angle-of-Departure
DL-PRS Downlink Positioning Reference Signal
DL-TDOA Downlink Time Difference Of Arrival
DRX Discontinuous Reception
DUT Device Under Test
ECEF Earth Centred, Earth Fixed
ECID Enhanced Cell Identification
EPRE Energy Per Resource Element
EN-DC E-UTRA-NR Dual Connectivity
E-UTRA Evolved UMTS Terrestrial Radio Access
E-UTRAN Evolved UMTS Terrestrial Radio Access Network
FDD Frequency Division Duplex
GANSS Galileo and Additional Navigation Satellite Systems
GEO Geostationary Earth Orbit
GLONASS GLObal’naya NAvigatsionnaya Sputnikovaya Sistema (English: Global Navigation Satellite System)
GNSS Global Navigation Satellite System
GPS Global Positioning System
GSS GNSS System Simulator
HD-FDD Half Duplex – Frequency Division Duplex
HDOP Horizontal Dilution Of Precision
ICD Interface Control Document
ICS Implementation Conformance Statement
IGSO Inclined Geosynchronous Satellite OrbitIS
IS Interface Specification
LOS Line Of Sight
LPP LTE Positioning Protocol
MBS Metropolitan Beacon System
MSS MBS System Simulator
MEO Medium Earth Orbit
Multi-RTT Multi-Round Trip Time
NB-IOT Narrow Band – Internet Of Things
NE-DC NR-E-UTRA Dual Connectivity
NGEN-DC NG-RAN E-UTRA-NR Dual Connectivity
NG-RAN E-UTRA NG-RAN E-UTRA Radio Access
NG-RAN NR NG-RAN NR Radio Access
NPRS NB-IOT Positioning Reference Signal
NR New Radio
NR-DC NR-NR Dual Connectivity
NR E-CID NR Enhanced Cell ID (positioning method)
OCNG OFDMA Channel Noise Generator
OCNS Orthogonal Channel Noise Simulator
OTA Over The Air
OTDOA Observed Time Difference Of Arrival
PBCH Physical Broadcast Channel
PCC Primary Component Carrier
PCell Primary Cell
PCFICH Physical Control Format Indicator Channel
PDCCH Physical Downlink Control Channel
PDSCH Physical Downlink Shared Channel
PHICH Physical Hybrid ARQ Indictor Channel
PPM Parts per million
PRS Positioning Reference Signal
PRS-RSRP Positioning Reference Signal based Reference Signal Received Power
PSS Primary Synchronization Signal
QZSS Quasi-Zenith Satellite System
RB Resource Block
RE Resource Element
RRC Radio Resource Control
RSSI Received Signal Strength Indicator
RSTD Reference Signal Time Difference
SBAS Space Based Augmentation System
SCC Secondary Component Carrier
SCell Secondary Cell
SFN System Frame Number
SNR Signal to Noise Ratio
SS System simulator
SSS Secondary Synchronization Signal
SV Space Vehicle
SV ID Space Vehicle Identity
TBS Terrestrial Beacon System
TDD Time Division Duplex
TOD Time Of Day
TOW Time Of Week
TTFF Time To First Fix
UE User Equipment
UL-SRS Uplink Sounding Reference Signal
UUID Universal Unique Identifier
UTRA Universal Terrestrial Radio Access
UTRAN Universal Terrestrial Radio Access Network
WGS‑84 World Geodetic System 1984
WLAN Wireless Local Area Network
WLS Weighted Least Square
WSS WLAN System Simulator