LTE; 5G; Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Lawful Interception (LI) architecture and functions (3GPP TS 33.127 version 15.3.0 Release 15)

RTS/TSGS-0333127vf30

General Information

Status
Published
Publication Date
13-Oct-2019
Technical Committee
Current Stage
12 - Completion
Completion Date
14-Oct-2019
Ref Project

Buy Standard

Standard
ETSI TS 133 127 V15.3.0 (2019-10) - LTE; 5G; Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Lawful Interception (LI) architecture and functions (3GPP TS 33.127 version 15.3.0 Release 15)
English language
55 pages
sale 15% off
Preview
sale 15% off
Preview

Standards Content (sample)

ETSI TS 133 127 V15.3.0 (2019-10)
TECHNICAL SPECIFICATION
LTE;
5G;
Digital cellular telecommunications system (Phase 2+) (GSM);
Universal Mobile Telecommunications System (UMTS);
Lawful Interception (LI) architecture and functions
(3GPP TS 33.127 version 15.3.0 Release 15)
---------------------- Page: 1 ----------------------
3GPP TS 33.127 version 15.3.0 Release 15 1 ETSI TS 133 127 V15.3.0 (2019-10)
Reference
RTS/TSGS-0333127vf30
Keywords
5G,GSM,LTE,SECURITY,UMTS
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:
http://www.etsi.org/standards-search

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 prevailing version of an ETSI

deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.

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

https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx

If you find errors in the present document, please send your comment to one of the following services:

https://portal.etsi.org/People/CommiteeSupportStaff.aspx
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 2019.
All rights reserved.

DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.

oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and

of the oneM2M Partners.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3GPP TS 33.127 version 15.3.0 Release 15 2 ETSI TS 133 127 V15.3.0 (2019-10)
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.

Legal Notice

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. These shall be

interpreted as being references to the corresponding ETSI deliverables.

The cross reference between 3GPP and ETSI identities can be found under http://webapp.etsi.org/key/queryform.asp.

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 33.127 version 15.3.0 Release 15 3 ETSI TS 133 127 V15.3.0 (2019-10)
Contents

Intellectual Property Rights ................................................................................................................................ 2

Legal Notice ....................................................................................................................................................... 2

Modal verbs terminology .................................................................................................................................... 2

Foreword ............................................................................................................................................................. 6

Introduction ........................................................................................................................................................ 6

1 Scope ........................................................................................................................................................ 7

2 References ................................................................................................................................................ 7

3 Definitions, symbols and abbreviations ................................................................................................... 8

3.1 Definitions .......................................................................................................................................................... 8

3.2 Symbols .............................................................................................................................................................. 8

3.3 Abbreviations ..................................................................................................................................................... 8

4 Requirements realisation .......................................................................................................................... 9

5 Functional architecture ........................................................................................................................... 10

5.1 General ............................................................................................................................................................. 10

5.2 High-level generic LI architecture .................................................................................................................... 10

5.3 Functional entities ............................................................................................................................................ 11

5.3.1 Law Enforcement Agency (LEA) ............................................................................................................... 11

5.3.2 Point of Interception (POI) ......................................................................................................................... 12

5.3.2.1 General .................................................................................................................................................. 12

5.3.2.2 Directly provisioned and triggered POIs ............................................................................................... 12

5.3.2.3 IRI-POIs and CC-POIs .......................................................................................................................... 12

5.3.2.4 Failure handling .................................................................................................................................... 12

5.3.3 Triggering Function .................................................................................................................................... 12

5.3.4 Mediation and Delivery Function (MDF) ................................................................................................... 12

5.3.5 Administrative Function (ADMF) .............................................................................................................. 13

5.3.5.1 General .................................................................................................................................................. 13

5.3.5.2 LICF ...................................................................................................................................................... 14

5.3.5.3 LIPF ...................................................................................................................................................... 14

5.3.6 System Information Retrieval Function (SIRF) .......................................................................................... 14

5.3.7 LEMF – Law Enforcement Monitoring Facility ......................................................................................... 14

5.4 LI interfaces ...................................................................................................................................................... 15

5.4.1 General ........................................................................................................................................................ 15

5.4.2 Interface LI_SI ............................................................................................................................................ 15

5.4.3 Interface LI_HI1 ......................................................................................................................................... 15

5.4.4 Interface LI_X1 .......................................................................................................................................... 16

5.4.4.1 General .................................................................................................................................................. 16

5.4.4.2 LIPF and POI ........................................................................................................................................ 16

5.4.4.3 LIPF and TF .......................................................................................................................................... 16

5.4.4.4 LIPF and MDF2/MDF3 ........................................................................................................................ 17

5.4.5 Interface LI_X2 .......................................................................................................................................... 17

5.4.6 Interface LI_X3 .......................................................................................................................................... 17

5.4.7 Interface LI_T ............................................................................................................................................. 17

5.4.7.1 General .................................................................................................................................................. 17

5.4.7.2 Interface LI_T2 ..................................................................................................................................... 18

5.4.7.3 Interface LI_T3 ..................................................................................................................................... 18

5.4.8 Interface LI_HI2 ......................................................................................................................................... 18

5.4.9 Interface LI_HI3 ......................................................................................................................................... 18

5.4.10 Interface LI_HI4 ......................................................................................................................................... 18

5.4.10.1 General .................................................................................................................................................. 18

5.4.10.2 LI operation notification ....................................................................................................................... 18

5.4.10.3 Contents of the notification ................................................................................................................... 19

5.4.11 Interface LI_ADMF .................................................................................................................................... 19

ETSI
---------------------- Page: 4 ----------------------
3GPP TS 33.127 version 15.3.0 Release 15 4 ETSI TS 133 127 V15.3.0 (2019-10)

5.4.12 Interface LI_MDF ....................................................................................................................................... 19

5.5 LI service discovery ......................................................................................................................................... 19

5.6 LI in a virtualised environment ........................................................................................................................ 19

5.6.1 General ........................................................................................................................................................ 19

5.6.2 Virtualised deployment architecture ........................................................................................................... 20

6 Network layer based interception ........................................................................................................... 21

6.1 General ............................................................................................................................................................. 21

6.2 5G ..................................................................................................................................................................... 21

6.2.1 General ........................................................................................................................................................ 21

6.2.2 LI at AMF ................................................................................................................................................... 22

6.2.2.1 Architecture ........................................................................................................................................... 22

6.2.2.2 Target identities ..................................................................................................................................... 23

6.2.2.3 Identity privacy ..................................................................................................................................... 24

6.2.2.4 IRI events .............................................................................................................................................. 24

6.2.2.5 Common IRI parameters ....................................................................................................................... 24

6.2.2.6 Specific IRI parameters ......................................................................................................................... 25

6.2.2.7 Network topologies ............................................................................................................................... 25

6.2.3 LI for SMF/UPF ......................................................................................................................................... 25

6.2.3.1 Architecture ........................................................................................................................................... 25

6.2.3.2 Target identities ..................................................................................................................................... 27

6.2.3.3 IRI events .............................................................................................................................................. 28

6.2.3.4 Common IRI parameters ....................................................................................................................... 28

6.2.3.5 Specific IRI parameters ......................................................................................................................... 28

6.2.3.6 Network topologies ............................................................................................................................... 28

6.2.4 LI at UDM for 5G ....................................................................................................................................... 29

6.2.5 LI at SMSF ................................................................................................................................................. 29

6.2.5.1 Architecture ........................................................................................................................................... 29

6.2.5.2 Target identities ..................................................................................................................................... 30

6.2.5.3 IRI events .............................................................................................................................................. 31

6.2.5.4 Common IRI parameters ....................................................................................................................... 31

6.2.5.5 Specific IRI parameters ......................................................................................................................... 31

6.2.5.6 Network topologies ............................................................................................................................... 31

6.2.6 LI support at NRF ....................................................................................................................................... 31

6.2.6.1 Architecture ........................................................................................................................................... 31

6.2.6.2 LI_SI notifications ................................................................................................................................ 32

6.2.6.3 LI_SI parameters ................................................................................................................................... 32

6.2.7 External data storage ................................................................................................................................... 33

6.3 4G ..................................................................................................................................................................... 33

6.4 3G ..................................................................................................................................................................... 33

6.5 VoNR ............................................................................................................................................................... 33

7 Service layer based interception ............................................................................................................. 34

7.1 General ............................................................................................................................................................. 34

7.2 Central subscriber management ....................................................................................................................... 34

7.2.1 General ........................................................................................................................................................ 34

7.2.2 LI at UDM .................................................................................................................................................. 34

7.2.2.1 Architecture ........................................................................................................................................... 34

7.2.2.2 Target identities ..................................................................................................................................... 35

7.2.2.3 Identity privacy ..................................................................................................................................... 36

7.2.2.4 IRI events .............................................................................................................................................. 36

7.2.2.5 Common IRI parameters ....................................................................................................................... 36

7.2.2.6 Specific IRI parameters ......................................................................................................................... 36

7.2.2.7 Network topologies ............................................................................................................................... 36

7.2.3 LI at HSS .................................................................................................................................................... 37

7.3 Location ............................................................................................................................................................ 37

7.3.1 General ........................................................................................................................................................ 37

7.3.2 Service usage location reporting ................................................................................................................. 37

7.3.2.1 General .................................................................................................................................................. 37

7.3.2.2 Embedded location reporting ................................................................................................................ 37

7.3.2.3 Separated location reporting.................................................................................................................. 37

7.3.3 Lawful Access Location Services (LALS) ................................................................................................. 38

ETSI
---------------------- Page: 5 ----------------------
3GPP TS 33.127 version 15.3.0 Release 15 5 ETSI TS 133 127 V15.3.0 (2019-10)

7.3.3.1 General .................................................................................................................................................. 38

7.3.3.2 Target positioning ................................................................................................................................. 38

7.3.3.2.1 General ............................................................................................................................................ 38

7.3.3.2.2 Immediate location provision .......................................................................................................... 39

7.3.3.2.3 Periodic location provision .............................................................................................................. 39

7.3.3.3 Triggered location ................................................................................................................................. 39

7.3.3.4 LI_X2 interface for target positioning and triggered location ............................................................... 40

7.3.4 Cell database information reporting ............................................................................................................ 41

7.4 IMS ................................................................................................................................................................... 42

8 LI security considerations ...................................................................................................................... 42

8.1 Introduction ...................................................................................................................................................... 42

8.2 Architectural alternatives ................................................................................................................................. 42

8.2.1 Full target list at every POI node ................................................................................................................ 42

8.2.2 Full target list only in LICF ........................................................................................................................ 42

8.2.3 Provisioning for registered users ................................................................................................................ 43

8.3 LI key management at ADMF .......................................................................................................................... 43

8.3.1 General ........................................................................................................................................................ 43

8.3.2 Key management ........................................................................................................................................ 43

8.4 Virtualised LI security ...................................................................................................................................... 43

8.4.1 General ........................................................................................................................................................ 43

8.5 Points of Interception ....................................................................................................................................... 43

Annex A (informative): 5G LI network topology views ...................................................................... 45

A.1 Non-roaming scenario ............................................................................................................................ 45

A.1.1 General ............................................................................................................................................................. 45

A.1.2 Service-based representation with point-to-point LI system ............................................................................ 45

A.2 Interworking with EPC/E-UTRAN ........................................................................................................ 46

A.2.1 General ............................................................................................................................................................. 46

A.2.2 Topology view for a non-roaming scenario ..................................................................................................... 47

A.3 Multiple DN connections in a PDU session ........................................................................................... 49

A.3.1 General ............................................................................................................................................................. 49

A.3.2 Topology view for a non-roaming scenario ..................................................................................................... 49

A.4 Non-3GPP access in a non-roaming scenario ........................................................................................ 51

A.4.1 General ............................................................................................................................................................. 51

A.4.2 Topology view .................................................................................................................................................. 51

Annex Z (informative): Change history ............................................................................................... 53

History .............................................................................................................................................................. 54

ETSI
---------------------- Page: 6 ----------------------
3GPP TS 33.127 version 15.3.0 Release 15 6 ETSI TS 133 127 V15.3.0 (2019-10)
Foreword

This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP).

The contents of the present document are subject to continuing work within the TSG and may change following formal

TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an

identifying change of release date and an increase in version number as follows:
Version x.y.z
where:
x the first digit:
1 presented to TSG for information;
2 presented to TSG for approval;
3 or greater indicates TSG approved document under change cont
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.