|
TECHNICAL SPECIFICATION
5G;
NG Radio Access Network (NG-RAN);
Stage 2 functional specification of User Equipment (UE)
positioning in NG-RAN
(3GPP TS 38.305 version 15.0.0 Release 15)
---------------------- Page: 1 ----------------------
3GPP TS 38.305 version 15.0.0 Release 15 1 ETSI TS 138 305 V15.0.0 (2018-09)
Reference
RTS/TSGR-0238305vf00
Keywords
5G
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the only prevailing document is the
print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
If you find errors in the present document, please send your comment to one of the following services:
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying
and microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2018.
All rights reserved.
TM TM TM
DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.
TM TM
3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and
of the 3GPP Organizational Partners.
oneM2M logo is protected for the benefit of its Members.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3GPP TS 38.305 version 15.0.0 Release 15 2 ETSI TS 138 305 V15.0.0 (2018-09)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (https://ipr.etsi.org/).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
Foreword
This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP).
The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or
GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables.
The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under
.
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
ETSI
---------------------- Page: 3 ----------------------
3GPP TS 38.305 version 15.0.0 Release 15 3 ETSI TS 138 305 V15.0.0 (2018-09)
Contents
Intellectual Property Rights . 2
Foreword . 2
Modal verbs terminology . 2
Foreword . 7
1 Scope . 8
2 References . 8
3 Definitions, symbols and abbreviations . 9
3.1 Definitions . 9
3.2 Abbreviations . 10
4 Main concepts and requirements . 10
4.1 Assumptions and Generalities . 10
4.2 Role of UE Positioning Methods . 11
4.3 Standard UE Positioning Methods . 12
4.3.1 Introduction. 12
4.3.2 Network-assisted GNSS methods . 13
4.3.3 OTDOA positioning . 13
4.3.4 Enhanced Cell ID methods . 13
4.3.5 Barometric pressure sensor positioning . 13
4.3.6 WLAN positioning . 13
4.3.7 Bluetooth positioning . 14
4.3.8 TBS positioning . 14
5 NG-RAN UE Positioning Architecture . 14
5.1 Architecture . 14
5.2 UE Positioning Operations . 15
5.3 NG-RAN Positioning Operations . 16
5.3.1 General NG-RAN Positioning Operations . 16
5.3.2 OTDOA Positioning Support . 16
5.4 Functional Description of Elements Related to UE Positioning in NG-RAN . 16
5.4.1 User Equipment (UE) . 16
5.4.2 gNB . 17
5.4.3 ng-eNB . 17
5.4.4 Location Management Function (LMF) . 17
6 Signalling protocols and interfaces . 17
6.1 Network interfaces supporting positioning operations . 17
6.1.1 General LCS control plane architecture . 17
6.1.2 NR-Uu interface . 17
6.1.3 LTE-Uu interface . 17
6.1.4 NG-C interface . 18
6.1.5 NLs interface . 18
6.2 UE-terminated protocols . 18
6.2.1 LTE Positioning Protocol (LPP) . 18
6.2.2 Radio Resource Control (RRC) for NR . 18
6.2.3 Radio Resource Control (RRC) for LTE . 18
6.3 NG-RAN Node terminated protocols . 19
6.3.1 NR Positioning Protocol A (NRPPa) . 19
6.3.2 NG Application Protocol (NGAP) . 19
6.4 Signalling between an LMF and UE . 19
6.5 Signalling between an LMF and gNB . 19
6.6 Signalling between an LMF and eNodeB . 19
7 General NG-RAN UE Positioning procedures . 19
7.1 General LPP procedures for UE Positioning . 19
7.1.1 LPP procedures . 19
ETSI
---------------------- Page: 4 ----------------------
3GPP TS 38.305 version 15.0.0 Release 15 4 ETSI TS 138 305 V15.0.0 (2018-09)
7.1.2 Positioning procedures . 20
7.1.2.1 Capability transfer . 20
7.1.2.2 Assistance data transfer . 20
7.1.2.3 Location information transfer. 20
7.1.2.4 Multiple transactions . 20
7.1.2.5 Sequence of procedures . 20
7.1.2.6 Error handling . 20
7.1.2.7 Abort . 20
7.2 General NRPPa Procedures for UE Positioning . 20
7.2.1 NRPPa procedures . 20
7.2.2 NRPPa transaction types . 21
7.2.2.1 Location information transfer. 21
7.3 Service Layer Support using combined LPP and NRPPa Procedures . 22
7.3.1 General . 22
7.3.2 NI-LR and MT-LR Service Support . 22
8 Positioning methods and Supporting Procedures . 22
8.1 GNSS positioning methods . 22
8.1.1 General . 22
8.1.2 Information to be transferred between NG-RAN/5GC Elements . 23
8.1.2.1 Information that may be transferred from the LMF to UE . 23
8.1.2.1.1 Reference Time . 24
8.1.2.1.2 Reference Location . 24
8.1.2.1.3 Ionospheric Models . 24
8.1.2.1.4 Earth Orientation Parameters . 24
8.1.2.1.5 GNSS-GNSS Time Offsets . 24
8.1.2.1.6 Differential GNSS Corrections . 24
8.1.2.1.7 Ephemeris and Clock Models . 24
8.1.2.1.8 Real-Time Integrity . 25
8.1.2.1.9 Data Bit Assistance . 25
8.1.2.1.10 Acquisition Assistance . 25
8.1.2.1.11 Almanac. 25
8.1.2.1.12 UTC Models . 25
8.1.2.2 Information that may be transferred from the UE to LMF . 25
8.1.2.2.1 GNSS Measurement Information . 25
8.1.2.2.1.1 UE-based mode . 25
8.1.2.2.1.2 UE-assisted mode . 26
8.1.2.2.2 Additional Non-GNSS Related Information. 26
8.1.3 Assisted-GNSS Positioning Procedures. 26
8.1.3.1 Capability Transfer Procedure . 26
8.1.3.2 Assistance Data Transfer Procedure. 26
8.1.3.2.1 LMF initiated Assistance Data Delivery . 26
8.1.3.2.2 UE initiated Assistance Data Transfer . 26
8.1.3.3 Location Information Transfer Procedure . 27
8.1.3.3.1 LMF initiated Location Information Transfer Procedure . 27
8.1.3.3.2 UE-initiated Location Information Delivery Procedure . 28
8.2 OTDOA positioning . 28
8.2.1 General . 28
8.2.2 Information to be transferred between NG-RAN/5GC Elements . 28
8.2.2.1 Information that may be transferred from the LMF to UE . 28
8.2.2.2 Information that may be transferred from the ng-eNB to LMF. 29
8.2.2.3 Information that may be transferred from the UE to LMF . 29
8.2.3 OTDOA Positioning Procedures . 29
8.2.3.1 Capability Transfer Procedure . 29
8.2.3.2 Assistance Data Transfer Procedure. 29
8.2.3.2.1 Assistance Data Transfer between LMF and UE . 29
8.2.3.2.1.1 LMF initiated Assistance Data Delivery . 29
8.2.3.2.1.2 UE initiated Assistance Data Transfer . 30
8.2.3.2.2 Assistance Data Delivery between LMF and ng-eNB . 30
8.2.3.2.2.1 LMF-initiated assistance data delivery to the LMF . 30
8.2.3.3 Location Information Transfer Procedure . 31
8.2.3.3.1 LMF-initiated Location Information Transfer Procedure . 31
ETSI
---------------------- Page: 5 ----------------------
3GPP TS 38.305 version 15.0.0 Release 15 5 ETSI TS 138 305 V15.0.0 (2018-09)
8.2.3.3.2 UE-initiated Location Information Delivery procedure . 32
8.3 Enhanced cell ID positioning methods . 32
8.3.1 General . 32
8.3.2 Information to be transferred between NG-RAN/5GC Elements . 33
8.3.2.1 Information that may be transferred from the LMF to UE . 33
8.3.2.2 Information that may be transferred from the ng-eNB to LMF. 33
8.3.2.3 Information that may be transferred from the gNB to LMF . 33
8.3.2.4 Information that may be transferred from the UE to LMF . 34
8.3.3 Downlink E-CID Positioning Procedures . 34
8.3.3.1 Capability Transfer Procedure . 34
8.3.3.2 Assistance Data Transfer Procedure. 34
8.3.3.3 Location Information Transfer Procedure . 34
8.3.3.3.1 LMF-initiated Location Information Transfer . 34
8.3.3.3.2 UE-initiated Location Information Delivery procedure . 35
8.3.4 Uplink E-CID Positioning Procedures . 35
8.3.4.1 Capability Transfer Procedure . 35
8.3.4.2 Assistance Data Transfer Procedure. 35
8.3.4.3 Position Measurement Procedure . 35
8.3.4.3.1 LMF-initiated Position Measurement . 35
8.4 Barometric pressure sensor positioning . 36
8.4.2 Information to be transferred between NG-RAN/5GC Elements . 37
8.4.2.1 Information that may be transferred from the LMF to UE . 37
8.4.2.1.1 Barometric pressure sensor assistance data . 37
8.4.2.2 Information that may be transferred from the UE to LMF . 37
8.4.2.2.1 Standalone mode . 37
8.4.2.2.2 UE-assisted mode . 37
8.4.2.2.3 UE-based mode . 37
8.4.3 Barometric Pressure Sensor Positioning Procedures . 37
8.4.3.1 Capability Transfer Procedure . 37
8.4.3.2 Assistance Data Transfer Procedure. 38
8.4.3.2.1 LMF initiated Assistance Data Delivery . 38
8.4.3.2.2 UE initiated Assistance Data Transfer . 38
8.4.3.3 Location Information Transfer Procedure . 39
8.4.3.3.1 LMF initiated Location Information Transfer Procedure . 39
8.4.3.3.2 UE-initiated Location Information Delivery Procedure . 39
8.5 WLAN positioning . 40
8.5.1 General . 40
8.5.2 Information to be transferred between NG-RAN/5GC Elements . 40
8.5.2.1 Information that may be transferred from the LMF to UE . 40
8.5.2.1.1 WLAN AP BSSID . 40
8.5.2.1.2 WLAN AP SSID . 40
8.5.2.1.3 WLAN AP Type Data . 40
8.5.2.1.4 WLAN AP Location . 41
8.5.2.2 Information that may be transferred from the UE to LMF . 41
8.5.2.2.1 Standalone mode . 41
8.5.2.2.2 UE-assisted mode . 41
8.5.2.2.3 UE-based mode . 41
8.5.3 WLAN Positioning Procedures . 41
8.5.3.1 Capability Transfer Procedure . 41
8.5.3.2 Assistance Data Transfer Procedure. 41
8.5.3.2.1 LMF initiated Assistance Data Delivery .
...