Content for TS 33.107 Word version: 17.0.0

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3.1 Definitions 3.2 Abbreviations
...

0 Introduction p. 18

This Technical Specification has been produced by the 3GPP TSG SA to allow for the standardisation in the area of lawful interception of telecommunications. This document describes in general the architecture and functions for lawful interception. Laws of individual nations and regional institutions (e.g. European Union), and sometimes licensing and operating conditions define a need to intercept telecommunications traffic and related information in modern telecommunications systems. It has to be noted that lawful interception shall always be done in accordance with the applicable national or regional laws and technical regulations.

1 Scope p. 19

The present document describes the architecture and functional requirements within a Third Generation Mobile Communication System (3GMS) and the Evolved Packet System (EPS).

The present document shows the service requirements from a Law Enforcement point of view only. The aim of this document is to define a 3GMS and EPS interception system that supports a number of regional interception regulations, but these regulations are not repeated here as they vary. Regional interception requirements shall be met by using specific (regional) mediation functions allowing only required information to be transported.

The handover interfaces for Lawful Interception (LI) of Packet-Data Services, Circuit Switched Services, and Multimedia Services within the UMTS network and Evolved Packet System for Stage 3 are described in TS 33.108.

2 References p. 19

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] Void

[2]

ETSI ES 201 158 (V1.2.1 April 2002): "Lawful Interception; Requirements for network functions".

[3]

ETSI ES 201 671 (V3.1.1 May 2007): "Handover Interface for the lawful interception of telecommunications traffic".

[4] Void

[5] Void

[6] Void

[7]

TS 33.106: "3G Security; Lawful Interception Requirements".

[8]

ANSI J-STD-025-A (April 2003): "Lawfully Authorised Electronic Surveillance".

[9] Void

[10]

TS 23.060: "General Packet Radio Service (GPRS); Service description".

[11]

TS 33.108: "3G Security; Handover interface for Lawful Interception".

[12] Void

[13]

TR 21.905: "Vocabulary for 3GPP Specifications".

[14]

TS 23.234: "3GPP system to Wireless Local Area Network (WLAN) Interworking; System Description".

[15]

TS 23.008: "Organization of subscriber data".

[16]

TS 29.234: "3GPP system to Wireless Local Area Network (WLAN) interworking; Stage 3".

[17]

TS 24.234: "3GPP system to Wireless Local Area Network (WLAN) interworking; User Equipment (UE) to network protocols; Stage 3".

[18]

RFC 1122 (October 1989): "Requirements for Internet Hosts -- Communication Layers".

[19]

RFC 1123 (October 1989): "Requirements for Internet Hosts -- Application and Support".

[20]

TS 23.246: "Multimedia Broadcast/Multicast Service (MBMS); Architecture and Functional Description".

[21]

TS 24.147: "Conferencing Using the IP Multimedia (IM) Core Network (CN) subsystem 3GPP Stage 3".

[22]

TS 23.401: "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access".

[23]

TS 23.402: "Architecture enhancements for non-3GPP accesses".

[24]

TS 29.273: "Technical Specification Group Core Network and Terminals; Evolved Packet System (EPS); 3GPP EPS AAA interfaces".

[25]

TS 33.328: "IP Multimedia Subsystem (IMS) media plane security".

[26]

TS 29.212: "Policy and Charging Control (PCC); Reference points".

[27] Void

[28]

TS 33.310: "Network Domain Security (NDS); Authentication Framework (AF)".

[29]

TS 33.210: "Network Domain Security (NDS); IP network layer security".

[30]

TS 23.272: " Circuit Switched (CS) fallback in Evolved Packet System (EPS); Stage 2"

[31]

TS 22.220: " Service Requirements for Home NodeBs and Home eNodeBs".

[32]

TS 36.300: "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description; Stage 2".

[33]

TS 25.467: "UTRAN architecture for 3G Home Node B (HNB); Stage 2"

[34]

TS 33.320: "Security of Home Node B (HNB) / Home evolved Node B (HeNB) ".

[35]

TS 33.220: "Generic Authentication Architecture (GAA); Generic Bootstrapping Architecture (GBA)".

[36]

RFC 3966 (December 2004): "The Tel URILs for Telephone Numbers ".

[37]

TS 29.060: "General Packet Radio Service (GPRS); GPRS Tunnelling Protocol (GTP) across the Gn and Gp interface".

[38]

TS 29.274: "3GPP Evolved Packet System (EPS); Evolved General Packet Radio Service (GPRS) Tunnelling Protocol for Control plane (GTPv2-C); Stage 3".

[39]

RFC 791: "Internet Protocol".

[40]

RFC 2460: "Internet Protocol, Version 6 (IPv6) Specification".

[41]

IEFT RFC 3697: "IPv6 Flow Label Specification".

[42]

TS 29.334: "IMS Application Level Gateway (IMS-ALG) - IMS Access Gateway (IMS-AGW); Iq Interface (Stage 3)".

[43]

TS 23.228: "IP Multimedia Subsystem; Stage 2".

[44]

TS 23.203: "Policy Charging and Control Architecture".

[45]

TS 23.237: "IP Multimedia Subsystem (IMS) Service Continuity; Stage 2".

[46]

TS 29.162: "Interworking between IM CN subsystem and IP Networks".

[47]

TS 29.163: "Interworking between IP Multimedia Core Network (CN) subsystem and Circuit Switched (CS) Networks"

[48]

TS 23.334: "IP Multimedia Subsystem (IMS) Application Level Gateway (IMS-ALG) - IMS Access Gateway (IMS-AGW) interface: Procedures descriptions".

[49]

TS 24.229: "IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3".

[50]

TS 22.278: "Service requirements for the Evolved Packet System (EPS)".

[51]

TS 22.468: "Group Communication System Enablers for LTE (GCSE_LTE)".

[52]

TS 23.303: "Proximity-based services (ProSe); Stage 2".

[53]

TS 23.468: "Group Communication System Enablers for LTE (GCSE_LTE); Stage 2".

[54] Void.

[55]

TS 24.623: "Technical Specification Group Core Network and Terminals; Extensible Markup Language (XML) Configuration Access Protocol (XCAP) over the Ut interface for Manipulating Supplementary Services".

[56]

RFC 4825: "The Extensible Markup Language (XML) Configuration Access Protocol (XCAP)".

[57]

TS 33.303: "Proximity-based Services (ProSe); Security aspects".

[58]

TS 24.333: "Proximity-services (ProSe) Management Objects (MO)".

[59]

TS 32.277: "Telecommunication management; Charging management; Proximity-based Services (ProSe) charging".

[60]

TS 22.101: "Universal Mobile Telecommunications System (UMTS); Service aspects; Service principles".

[61]

TS 29.002: "3rd Generation Partnership Project; Technical Specification Group Core Network and Terminals; Mobile Application Part (MAP) specification ".

[62]

TS 29.228: "Technical Specification Group Core Network and Terminals; IP Multimedia (IM) Subsystem Cx and Dx interfaces; Signalling flows and message contents".

[63]

TS 29.328: "Technical Specification Group Core Network and Terminals; IP Multimedia (IM) Subsystem Sh interface; Signalling flows and message contents".

[64] Void.

[65]

GSMA IR.61: "Wi-Fi Roaming Guidelines".

[66]

TS 29.329: " Technical Specification Group Core Network and Terminals; Evolved Packet System (EPS); 3GPP EPS AAA interfaces ".

[67]

TS 22.071: "Location Services (LCS); Service description; Stage 1".

[68]

TS 23.271: "Functional stage 2 description of Location Services (LCS)".

[69]

RFC 3320: "Signaling Compression (SigComp)".

[70]

RFC 4896: "Signaling Compression (SigComp) Corrections and Clarifications".

[71]

GSMA IR.65: "IMS Roaming and Interworking Guidelines".

[72]

MMS Architecture OMA-AD-MMS-V1_3-20110913-A.

[73]

Multimedia Messaging Service Encapsulation Protocol OMA-TS-MMS_ENC-V1_3-20110913-A.

[74]

TS 22.140: "Multimedia Messaging Service (MMS); Stage 1".

[75]

TS 23.214: "Architecture enhancements for control and user plane separation of EPC; Stage 2".

[76]

OMA MLP TS: "Mobile Location Protocol", [http://www.openmobilealliance.org].

[77]

RFC 2822: "Internet Message Format".

[78]

TS 23.228: "IP Multimedia Subsystem (IMS);Stage 2".

[79]

TS 32.272: "Push-to-talk over Cellular (PoC) charging".

[80]

TS 24.379: "Mission Critical Push To Talk (MCPTT) call control; Protocol specification".

[81]

OMA-TS-PoC_System_Description-V2_1-20110802-A.

[82]

OMA-AD-PoC-V2_1-20110802-A.

[83]

OMA-TS-PoC UserPlane-V2_1-20110802-A.

[84]

TS 23.179: "Functional architecture and information flows to support MCPPT Stage 2".

[85]

TS 22.179: "Mission Critical Push to Talk (MCPTT) over LTE; Stage 1".

[86]

RFC 3550: "Real Time Transport Protocol".

[87]

RFC 3998: "Integrated Services Digital Network (ISDN) User Part (ISUP) to Session Initiation Protocol (SIP) Mapping".

[88]

RFC 3261: "Session Initiation Protocol".

[89]

ETSI TS 103 221-1 (V1.1.1): "Lawful Interception (LI); Internal Network Interface X1 for Lawful Interception".

[90]

TS 33.127: "Lawful Interception (LI) Architecture and Functions".

[91]

TS 36.413: "Evolved Universal Terrestrial Radio Access Network (E-UTRAN); S1 Application Protocol (S1AP)."

3 Definitions, symbols and abbreviations p. 22

3.1 Definitions p. 22

For the purposes of the present document, the terms and definitions given in TR 21.905 and the following apply.

Application layer:

As defined by Internet Engineering Task Force (IETF) in RFC 1123.

Closed access mode:

H(e)NB provides services only to its associated CSG members. A H(e)NB configured for closed access broadcasts a CSG Indicator and a specific CSG Identity.

CUPS:

As defined in TS 23.214, represents PLMN with architecture enhancements for control and user plane separation of EPC nodes.

Hybrid access mode:

H(e)NB provides services to its associated CSG members and to non-CSG members. A H(e)NB configured for hybrid access does not broadcast a CSG Indicator but does broadcast a CSG Identity.

IP layer:

As defined by Internet Engineering Task Force (IETF) in RFC 1122.

Interception Area:

is a subset of the network service area comprised of a set of cells which defines a geographical zone.

Location Dependent Interception:

is interception of a target mobile within a network service area that is restricted to one or several Interception Areas (IA).

MCPTT Identity:

Attributes configured in the MCPTT service that relate to the human user of the MCPTT service.

Non-Local Identity:

As defined by clause 5.1.2 General principles in TS 33.106.

Open access mode:

H(e)NB operates as a normal NodeB or eNodeB. A H(e)NB configured for open access does not broadcast either a CSG Indicator or CSG Identity.

Push to Talk over Cellular (PTC):

This term, when used in the present document, represents either a PoC or MCPTT type service.

S8 Home Routed (S8HR):

The term as used in this standard represents a roaming architecture where PDN-GW and P-CSCF are located in the HPLMN and therefore, UE IMS signalling and media are routed directly to the HPLMN through S8 reference point. Roaming architecture with S8HR for VoLTE is described in GSMA IR.65 [71] clause 2.4.3.

Other LI specific definitions are given in TS 33.108.

3.2 Abbreviations p. 23

For the purposes of the present document, the abbreviations given in TR 21.905 and the following apply:

3GMS

3rd Generation Mobile Communications System

3G GGSN

3rd Generation Gateway GPRS Support Node

3G GSN

3rd Generation GPRS Support Node (GGSN/SGSN)

3G MSC

3rd Generation Mobile Switching Centre

3G SGSN

3rd Generation Serving GPRS Support Node

3G UMSC

3rd Generation Unified Mobile Switching Centre

AAA

Authentication, Authorization, and Accounting

ADMF

Administration Function

AGW

Access Gateway

Access Network

Access Provider

Application Server

BBIFF

Bearer Binding Intercept and Forwarding Function

BM-SC

Broadcast-Multicast Service Centre

BSF

Bootstrapping Serving Function

B-TID

Bootstrapping Transaction Identifier

Content of Communication

Circuit Switched

CSCF

Call Session Control Function

CSG

Closed Subscriber Group

CSP

Communications Service Provider

CSR

Cell Site Report

CUPS

Control and User Plane Separation of EPC nodes

Delivery Function

DSMIP

Dual Stack Mobile IP

ECT

Explicit Call Transfer

EPC

Evolved Packet Core

ePDG

Evolved PDG

EPS

Evolved Packet System

E-UTRAN

Evolved UTRAN

FTP

File Transfer Protocol

GBA

Generic Bootstrapping Architecture

GGSN

Gateway GPRS Support Node

GPRS

General Packet Radio Service

GSM

Global System for Mobile communications

GSN

GPRS Support Node (SGSN or GGSN)

Home Agent

HeMS

HeNB Management System

HeNB

Home enhanced NodeB

HeNB GW

HeNB Gateway

H(e)NB

Home and Home enhanced NodeB

Handover Interface

HLR

Home Location Register

HMS

HNB Management System

HNB

Home NodeB

HNB GW

HNB Gateway

HRPD

High Rate Packet Data

HSS

Home Subscriber Server

Interception Area

IBCF

Interconnecting Border Control Function

ICEs

Intercepting Control Elements (3G MSC Server, 3G GMSC Server, P-CSCF, S-CSCF, SGSN, GGSN, HLR, AAA Server, PDG, MME, S-GW, PDN-GW, HSS)

IETF

Internet Engineering Task Force

IM-MGW

IMS Media Gateway

IMEI

International Mobile station Equipment Identity

IMPI

IP Multimedia Private Identity

IMPU

IP Multimedia Public Identity

IMS

IP Multimedia Core Network Subsystem

IMS-AGW

IMS Access Gateway

IMSI

International Mobile Subscriber Identity

INEs

Intercepting Network Elements (3G MSC Server, 3G GMSC Server, P-CSCF, S-CSCF, SGSN, GGSN, MGW, HLR, AAA Server, PDG)

Internet Protocol

IP-SM-GW

IP-Short-Message-Gateway

IRI

Intercept Related Information

I-WLAN

Interworking WLAN (3GPP WLAN interworking subnetwork)

LALS

Lawful Access Location Services

LAN

Local Area Network

LBO

Local Breakout

LCS

Location Services

LDI

Location Dependent Interception

LEA

Law Enforcement Agency

LEMF

Law Enforcement Monitoring Facility

LIPA

Local IP Access

LMISF

LI Mirror IMS State Function

LTE

Long Term Evolution

MBMS

Multimedia Broadcast/Multicast Service

MC ID

Mission Critical User Identity

MCPTT

Mission Critical Push-To-Talk

MCPTT ID

Mission Critical Push to Talk Identity

Mediation Function

MGCF

Media Gateway Control Function

MGW

Media Gateway

Mobile Entity

MIP

Mobile IP

Multimedia Message

MMBox

Multimedia Message Box

MME

Mobility Management Entity

Mobile Node

MRF

Media Resource Function

MSISDN

Mobile Subscriber ISDN Number

NAF

Network Application Function

NAI

Network Access Identifier

Network Operator

PCRF

Policy and Charging Rules Function

P-CSCF

Proxy CSCF

PDG

Packet Data Gateway

PDN

Packet Data Network

PDN-GW

PDN Gateway

PMIP

Proxy Mobile IP

PoC

Push to talk over Cellular

Packet Switched

PTC

Push to Talk over Cellular

Routing Area

RAI

Routing Area Identity

S8HR

S8 Home Routing

SAI

Service Area Identity

S-CSCF

Serving CSCF

SeGW

Security Gateway

SGSN

Serving GPRS Support Node

SIP

Session Initiation Protocol

SMS

Short Message Service

S-GW

Serving Gateway

SR-VCC

Single Radio Voice Call Continuity

SX3LIF

Split X3 LI Interworking Function

TEL URI

"tel" URI, as defined in RFC 3966

TLS

Transport Layer Security

TrGW

Transit Gateway

TRF

Transit Routing Function

TWAN

Trusted WLAN Access Network

User Equipment

UMTS

Universal Mobile Telecommunication System

URI

Universal Resource Identifier

URL

Universal Resource Locator

VoIP

Voice over IP

VoLTE

Voice over LTE

WLAN

Wireless LAN

WAF

WebRTC Authorisation Function

WebRTC

Web Real Time Communications

WIC

WebRTC IMS Client

WWSF

WebRTC Web Server Function