Name: Lawful Interception of LTE

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Lawful Interception of LTE, VoLTE, RCS
ISS World Dubai
March 2014
Rene Nitzinger, Product Management LIMS

utimaco®

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utimaco®

Utimaco LIMS
Competence in Lawful Interception
Utimaco has been providing LI solutions since 1994
• Worldwide operations: around 250 installations
in over 80 countries
• Lawful interception and Data Retention Systems
scalable from 10 thousands to millions of subscribers
It Strong partnerships with leading telecom infrastructure
vendors
• Compliant to international LI standards of ETS_ill
ANSUATIS, CableLabs and avtive member of ETSI TO LI
Conform to numerous national telecommunication laws

ISS World Dubai • 4 March 2014

Page 2



utimaco®
LTE, LTE Advanced
• 4th generation mobile wireless
• 3GPP standard (Rel. 8 — Rel. 11)
E-UTRAN : evolved radio access
SAE: system architecture evolution
EPC: evolved packed core

SAE I EPC is the evolution of the GPRS Core Network
all IF network
simplified architecture
support for higher throughput and lower latency radio access networks (RANs)
support for multiple, heterogeneous RANs, including legacy systems as GPRS, but
also non-3GPP systems (e.g. WiMAX, WLAN)
- mobility between heterogeneous RANs

Page 3
ISS World Dubai • 4 March 2014

utimaco®

LTE Network Layout

User Entities (UE)
Internet
J't
SG-I
55

S8

other IP
networks

Si•MME

eNS
6a

LTE Radio Access Network
(E-UTRAN)

----S

GERAN/
UTRAN

LTE Evolved Packet Core

Page 4
ISS World Dubai • 4 March 2014

utimaco®

Lawful interception of LTE
Utimaco LIMS

Law Enforcement Agency

LIMS Management Server
a

n

a
(target: MSISDN, IMSI. MEP)

LIMS Mediation Device ---

HI2
(D62: No
(0F2I CC)

X1
(target. MSISDN, OAS', IME6

tt

X2 H I 3
ORO (Cc)

II

Monitoring Center

ETSI I S 133 106-108
3 G P P TS 33.106-108
Internet

other IP
networks
eNB
6a

LTE Radio Access Network
(E-LITRAN)

GERAN/
LJTRAN

LTE Evolved Packet Core
ISS World Dubai • 4 March 2014

Page 5

utimaco®

Lawful interception of LIE
!Aimee° LIMS
LIMS Management Server
a s t a

II

Law Enforcement Agency

TS'
1-111
(target: MSISDN, MASI. IMEI)

.F1
702I

MI2
(0F2: RI)

LIMS Mediation Device - - - H I S

'

( a CC)
xl
(target MSISDN. IMSI, !MEI)
t

lag
Monitoring Center

t

II

X2 H I S
(R)) (CC)
1 I

Internet

:

1

7

S

1

other IP
networks

SI•MME

Sa

LIE Radio Access Network
(E-UTRAN)

GE RANI
UTRAN

LIE Evolved Packet Core
ISS World Dubai • 4 March 2014

Page 6


utimaco®

Voice over LIE
• Tw o deployment options for mobile network operators:
CSFB (Circuit-Switched Fallback)

• L I E for data only
• Voice-calls and SMS fall back to the circuit-switched domain (2G13G)

VoLTE (Voice over LTE)
• Based on IF Multimedia Subsystem (IMS)
• Uses VolP (SIP + RIP)

'SS World Dubai • 4 March 2014

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utimaco®
Lawful interception of CSFIE3
Utimaco LIMS

Law Enforcement Agency

EMS Management Server
-

h

1
i

l

l
(target: MSISDN, IMSI, MEI)

*4-

El:

HI2 t a 4

(OF2:

LIMS Mediation Device ---- HI3
3

)(1
(target: MSISDN, IMSI. MED

I

A

M

I

S

I

L

(LW CC)

Monitoring Center

t

t
X2 1-113
(IRO (cc)
I

I

2G/3G Voice Core

PSTN/ISDN

User Entity (UE) G S M I U T M T S Radio Access
r - N e t w o r k (GERAN, UTRAN)
Internet

other IP
networks

LTE Radio Access Network
(E-UTRAN)
ISS World Dubai • 4 March 2014

LTE Evolved Packet Core

Page 8

utimaco®
Lawful interception of VoLTE
'Aimee° LIMS

Law Enforcement Agency
e t ME

LIMS Management Server

HI
(target: Tel-LIRL. SIP-URI)

HI2
(DF2: filo
LIMS Mediation Device - - - H I 3
F
a
(0 3: CC)

Monitoring Center

1 . 1 2 . 1 1 n
t
I
Xi
(target: Tel-IIRL. SIP-URI)
Xi
(target: Tel-LIRL.

t

X2 x 3
(RI) ( C C )

ET& TS 102 232-5

I

at I
2G/3G Packet Core

Internet

PSTN/ISDN
LTE Evolved Packet Core

ISS World Dubai • 4 March 2014

MM Core

Page 9

utimaco®

RCS
E RCS is an initiative of the GSM Association
• Aka
• R C S offers a suite of applications and services
• Enhanced phonebook
• Enhanced messaging
• Enriched calls

• enables features such as
- Sharing of pictures or videos during a call
File transfer
Instant text messages between two or more users
• Automatic discovery of user's location

Page 10
ISS World Dubai • 4 March 2014

utimaco®

Rich Communication Suite
• R C S services are provided by
various application servers
using an IMS:

MS Core

Internet
RCS
User Terminal

BGF

BGF

H r

Broadband Access Network

CSCF

Roaming

SIP
RTP
•••••••••••••••••......1BGF

• Instant Messaging Server RCS

H

T

T

Networks

MSRP Applicafion
Layer

User Terminal

✓ Message handling
Radio Access Network

RCS

Presence Server

Application Servers

• Keeps track of the user's status information

Service Provider Core Network

Conference Server
Sharing videos and pictures

ISS World Dubai • 4 March 2014

P

a

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11

utimaco®

Lawful interception of RCS
Utimaco LIMS



Law Enforcement Agency

LIMS Management Server
Hil

INSISISEttp

(target: TokURL, SIP-URI)

(DFH2121RI:
L I M S M e d i a t i o n D e v i c e - - - (133:
HF1 .3M -

Monitoring Center

t
(target: Tel-URL,

X

I

X

2

X 3

(target Tet-URL, SIP-URI) ( I R O ( c c )

N H

LIMS Aeneaa
Point DPI

RCS

Broadband Access Network

GF

BGF/P-CSCF

Internet

CSCF
IMS

MG1

Radio Access Network

ISS World Dubai • 4 March 2014

PSTN/ISDN

Service Provider Core Network

12

Page 12

111

utimaco®

Summary and Recommendations
Lawful interception of LTE and VoLl-E is well standardized and
commonly supported by the network nodes
LI for RCS is not standardized yet, but can mostly be covered by
existing standards and tools
Implementation of LI in the networks can be complex and requires
Proper analysis of the detailed requirements
Tight integration with network elements of various vendors
Optional use of LI probes
High-capacity, high-performance mediation devices
Optional integration with other LI systems (e.g. 2G13G, fixedbroadband)

ISS World Dubai • 4 March 2014

Page 13

Thank you for your attention!
Utimaco Safeware AG
GermanusstraBe 4
52080 Aachen, Germany
Phone +49 241 1696-0
Web wwwutimacacom
E-Mail li-contactutimaco.com
Copyright © 2014 — Utimaco Safeware AG
All trademarks are trademarks of the particular
copyright holder. Specifications are subject to
change without notice.

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