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Content for  TS 36.305  Word version:  16.2.0

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1  ScopeWord‑p. 9

The present document specifies the stage 2 of the UE Positioning function of E-UTRAN, which provides the mechanisms to support or assist the calculation of the geographical position of a UE. UE position knowledge can be used, for example, in support of Radio Resource Management functions, as well as location-based services for operators, subscribers, and third-party service providers. The purpose of this stage 2 specification is to define the E-UTRAN UE Positioning architecture, functional entities and operations to support positioning methods. This description is confined to the E-UTRAN Access Stratum. It does not define or describe how the results of the UE position calculation can be utilised in the Core Network (e.g., LCS) or in E-UTRAN (e.g., RRM).
UE Positioning may be considered as a network-provided enabling technology consisting of standardised service capabilities that enable the provision of location applications. The application(s) may be service provider specific. The description of the numerous and varied possible location applications which are enabled by this technology is outside the scope of the present document. However, clarifying examples of how the functionality being described may be used to provide specific location services may be included.
This stage 2 specification covers the E-UTRAN positioning methods, state descriptions, and message flows to support UE Positioning.
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2  References

The following documents contain provisions which, through reference in this text, constitute provisions of the present document.
  • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific.
  • For a specific reference, subsequent revisions do not apply.
  • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document.
[1]
TR 21.905: "Vocabulary for 3GPP Specifications".
[2]
TS 23.271: "Functional stage 2 description of Location Services (LCS)"
[3]
TS 22.071: "Location Services (LCS); Service description, Stage 1".
[4]
TS 23.032: "Universal Geographical Area Description (GAD)".
[5]
TS 36.306: "Evolved Universal Terrestrial Radio Access (E-UTRA); "User Equipment (UE) radio access capabilities".
[6]
IS-GPS-200, Revision D: Navstar GPS Space Segment/Navigation User Interfaces, March 7th, 2006.
[7]
IS-GPS-705: Navstar GPS Space Segment/User Segment L5 Interfaces, September 22, 2005.
[8]
IS-GPS-800: Navstar GPS Space Segment/User Segment L1C Interfaces, September 4, 2008.
[9]
Galileo OS Signal in Space ICD (OS SIS ICD): Draft 0, Galileo Joint Undertaking, May 23rd, 2006.
[10]
Global Navigation Satellite System GLONASS: Interface Control Document, Version 5, 2002.
[11]
IS-QZSS: Quasi Zenith Satellite System Navigation Service Interface Specifications for QZSS, Ver.1.0, June 17, 2008.
[12]
Specification for the Wide Area Augmentation System (WAAS): US Department of Transportation, Federal Aviation Administration, DTFA01-96-C-00025, 2001.
[13]
RTCM 10402.3: RTCM Recommended Standards for Differential GNSS Service (v.2.3), August 20, 2001.
[14]
TS 36.331: "Evolved Universal Terrestrial Radio Access (E-UTRA); "Radio Resource Control (RRC); Protocol specification".
[15]
TS 25.331: " Radio Resource Control (RRC); Protocol Specification".
[16]
TS 44.031: "Location Services (LCS); Mobile Station (MS) - Serving Mobile Location Centre (SMLC) Radio Resource LCS Protocol (RRLP)".
[17]
OMA-AD-SUPL-V2_0: "Secure User Plane Location Architecture Approved Version 2.0".
[18]
OMA-TS-ULP-V2_0_3: "UserPlane Location Protocol Approved Version 2.0.3".
[19]
TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".
[20]
TS 36.214: "Evolved Universal Terrestrial Radio Access (E-UTRA); "Physical layer - Measurements".
[21]
TS 36.302: "Evolved Universal Terrestrial Radio Access (E-UTRA); "Services provided by the physical layer ".
[22]
TS 25.305: "Stage 2 functional specification of User Equipment (UE) positioning in UTRAN".
[23]
TS 43.059: "Functional stage 2 description of Location Services in GERAN".
[24]
TR 23.891: "Evaluation of LCS Control Plane Solutions for EPS".
[25]
TS 36.355: "Evolved Universal Terrestrial Radio Access (E-UTRA); LTE Positioning Protocol (LPP)".
[26]
TS 24.171: "Control Plane Location Services (LCS) procedures in the Evolved Packet System (EPS)".
[27]
TS 29.171: "Location Services (LCS); LCS Application Protocol (LCS-AP) between the Mobile Management Entity (MME) and Evolved Serving Mobile Location Centre (E-SMLC); SLs interface".
[28]
BDS-SIS-ICD-B1I-3.0: "BeiDou Navigation Satellite System Signal In Space Interface Control Document Open Service Signal B1I (Version 3.0)", February, 2019.
[29]
IEEE 802.11: "Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications".
[30]
Bluetooth Special Interest Group: "Bluetooth Core Specification v4.2", December 2014.
[31]
ATIS-0500027: "Recommendations for Establishing Wide Scale Indoor Location Performance", May 2015.
[32]
TS 36.211: "Evolved Universal Terrestrial Radio Access (E-UTRA); Physical channels and modulation".
[33]
RTCM 10403.3: RTCM Recommended Standards for Differential GNSS Services (v.3.3), October 7, 2016.
[34]
BDS-SIS-ICD-B1C-1.0: "BeiDou Navigation Satellite System Signal In Space Interface Control Document Open Service Signal B1C (Version 1.0)", December, 2017.
[35]
IRNSS Signal-In-Space (SPS): Interface Control Document (ICD) for standard positioning service version 1.1, August 2017.
[36]
IS-QZSS-L6-001: Quasi-Zenith Satellite System Interface Specification - Centimetre Level Augmentation Service, Cabinet Office, November 5, 2018.
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3  Definitions and abbreviationsWord‑p. 11

3.1  Definitions

For the purposes of the present document, the terms and definitions given in TR 21.905 apply.
As used in this document, the suffixes "-based" and "-assisted" refer respectively to the node that is responsible for making the positioning calculation (and which may also provide measurements) and a node that provides measurements (but which does not make the positioning calculation). Thus, an operation in which measurements are provided by the UE to the E-SMLC to be used in the computation of a position estimate is described as "UE-assisted" (and could also be called "E-SMLC-based"), while one in which the UE computes its own position is described as "UE-based".
Both standalone LMU and LMU integrated into an eNB are supported. As used in this document, LMU refers to both cases of a standalone LMU and an LMU integrated into an eNodeB unless explicitly mentioned otherwise.
State Space Representation (SSR):
The state space representation provides information on the status of individual GNSS error sources. State parameter values are transmitted to UE. The user corrects his own observations of a single GNSS receiver with SSR corrections computed from these state parameters for his individual position, and performs RTK positioning with corrected observations. This contrasts with Observation Space Representation (OSR) which uses a lump-sum of distance-dependent GNSS errors instead of individual GNSS error sources. For OSR the representation of RTK network corrections in the observation space always uses GNSS observation of an actual reference station, which are then applied by the user to the conventional RTK algorithm.
Transmission Point (TP):
A set of geographically co-located transmit antennas for one cell, part of one cell or one PRS-only TP. Transmission Points can include base station (eNode B) antennas, remote radio heads, a remote antenna of a base station, an antenna of a PRS-only TP, etc. One cell can be formed by one or multiple transmission points. For a homogeneous deployment, each transmission point may correspond to one cell.
PRS-only TP:
A TP which only transmits PRS signals for PRS-based TBS positioning and is not associated with a cell.
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3.2  Abbreviations

For the purposes of the present document, the following abbreviations apply.
ADR
Accumulated Delta Range
AoA
Angle of Arrival
AP
Access Point
ARP
Antenna Reference Point
BDS
BeiDou Navigation Satellite System
BSSID
Basic Service Set Identifier
CID
Cell-ID (positioning method)
CIoT
Cellular IoT
CLAS
Centimeter Level Augmentation Service
E-SMLC
Enhanced Serving Mobile Location Centre
E-CID
Enhanced Cell-ID (positioning method)
ECEF
Earth-Centered, Earth-Fixed
ECI
Earth-Centered-Inertial
EGNOS
European Geostationary Navigation Overlay Service
E-UTRAN
Evolved Universal Terrestrial Radio Access Network
FDMA
Frequency Division Multiple Access
FKP
Flächenkorrekturparameter (Engl: Area Correction Parameters)
GAGAN
GPS Aided Geo Augmented Navigation
GLONASS
GLObal'naya NAvigatsionnaya Sputnikovaya Sistema (Engl.: Global Navigation Satellite System)
GMLC
Gateway Mobile Location Center
GNSS
Global Navigation Satellite System
GPS
Global Positioning System
GRS80
Geodetic Reference System 1980
HESSID
Homogeneous Extended Service Set Identifier
IoT
Internet of Things
LCS
LoCation Services
LCS-AP
LCS Application Protocol
LMU
Location Measurement Unit
LPP
LTE Positioning Protocol
LPPa
LTE Positioning Protocol Annex
MAC
Master Auxiliary Concept
MBS
Metropolitan Beacon System
MO-LR
Mobile Originated Location Request
MT-LR
Mobile Terminated Location Request
NavIC
NAVigation with Indian Constellation
NB-IoT
NarrowBand Internet of Things
NI-LR
Network Induced Location Request
N-RTK
Network - Real-Time Kinematic
OTDOA
Observed Time Difference Of Arrival
PDU
Protocol Data Unit
posSIB
Positioning SIB
PPP
Precise Point Positioning
PPP-RTK
Precise Point Positioning - Real-Time Kinematic
PRS
Positioning Reference Signal
QZSS
Quasi-Zenith Satellite System
RRM
Radio Resource Management
RSSI
Received Signal Strength Indicator
RTK
Real-Time Kinematic
SBAS
Space Based Augmentation System
SET
SUPL Enabled Terminal
SIB
System Information Block
SLP
SUPL Location Platform
SSID
Service Set Identifier
SSR
State Space Representation
STEC
Slant TEC
SUPL
Secure User Plane Location
TADV
Timing Advance
TBS
Terrestrial Beacon System
TEC
Total Electron Content
TP
Transmission Point
UE
User Equipment
URA
User Range Accuracy
UTDOA
Uplink Time Difference of Arrival
WAAS
Wide Area Augmentation System
WGS-84
World Geodetic System 1984
WLAN
Wireless Local Area Network
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