Lawful Interception System Development For 4 G Mobile

Lawful Interception System Development For 4 G Mobile Network Decision Group Inc. 2020/15/09 1

Agenda 1 4 Major LI References of Decision Group Inc. 2 Generalized View of LI architecture 3 LI Network Scheme for 4 G Network Decision Group's Services for LI Project 2

AGENDA 01 References Major LI References of Decision Group Inc. 3

4 Major LI References of Decision Group INC. Since 2011, Decision Group (often referred to as D. G) has established many major references as follows.

YEAR COUNTRY PROJECT NAME 2011 ~ 2016 Eswatini Information Security Project 2012 Egypt Alexandria Target Inception 2013 Taiwan Intelligent Optic Fiber 2014 Argentina Telefonic x. DSL LI 2013 Eritrea LI 2016 ~ 2018 Argentina Telefonic 3 G/4 G GTP LI 2016 ~ 2018 Taiwan e Taiwan Optical Platform LI Phrase 1~4 2016 ~ 2018 Japan Tokushima Prefecture City Hall LI 2019 Taiwan Chungwa Telecom 5 G LI 5

6 AGENDA LI Architecture Generalized View of LI architecture 02

Generalized View of LI architecture LEA domain NWO / AP / Sv. P’s domain NWO/AP/Sv. P’s Administration function Network Internal Functions HI 1 The European Telecommunications Standards Institute (ETSI) is an independent, not-forprofit, standardization organization in the telecommunications industry (equipment makers and network operators) in Europe Intercept related information(IRI) IRI mediation function Content of communication(C C) HI 2 IIF : Internal interception function INI : Internal network interface CC mediation function HI 3 LEMF INI LI handover interface HI HI 1 : administrative information HI 2 : intercept related information HI 3 : content of communication 7

8 AGENDA LI Network Scheme for 4 G Network 03

LI Scheme for 4 G Network (1/6) • IRI - Intercept Related Information • CC - Content of Communication LEA Monitor Center Data Analysis DRMS Data Archiving Check out records Data Provisioning User EDDM LI Command Input warrant order i. Monitor IRI & CC Delivery LI Gateway 9

LI Scheme for 4 G Network (2/6) IRI Provisioning • Provision from • MME • HSS LEA Monitor Center Data Analysis DRMS Data Archiving Check out records User Data Provisioning EDDM HI 1 LI Command Input warrant order i. Monitor HI 2 & HI 3 IRI & CC Delivery LI Gateway 10

LI Scheme for 4 G Network (3/6) IRI Provisioning from MME • Internal Interface X • X 1 - Activate, manage and terminate interception • X 2 - Transport IRI from the point of interception to the MF MME LEA Monitor Center Data Analysis DRMS X 1 Data Archiving Check out records User X 2 EDDM HI 1 LI Command Input warrant order i. Monitor HI 2 & HI 3 IRI & CC Delivery LI Gateway 11

LI Scheme for 4 G Network (4/6) CC Provisioning • Provision from • P-GW • S-GW LEA Monitor Center Data Analysis DRMS Data Archiving X 3 Check out records User Data Provisioning EDDM HI 1 LI Command Input warrant order i. Monitor HI 2 & HI 3 IRI & CC Delivery LI Gateway 12

13 LI Scheme for 4 G Network (5/6) • Internal Interface X • X 1 - Activate, manage and terminate interception • X 3 - Transport to the MF Other Party PDN-GW LEA Monitor Center U E Data Analysis duplicate DRMS X 1 Data Archiving Check out records User x 3 EDDM HI 1 LI Command Input warrant order i. Monitor HI 2 & HI 3 IRI & CC Delivery LI Gateway Packet Encapsulation Intercept ID : 63330

LI Scheme for 4 G Network – Voice CSFB 3 G (6/6) Voice • E 1 SS 7 ISUP • E 1 ISDN PRI X 2 Front-End i. Mediator CC - HI 3 Back-End HI 1 HI 2 User. . . Media Gateway Voice Recorder i. Monitor #1 EDDM DRMS & Storage 14

04 AGENDA Services Decision Group’s Services For LI Project 15

• Decision Groups Services For LI Project Plan and System Design • Project Scope and System Capacity Evaluation • Network Architecture and System Availiability • Hardware Preparation and Software Customization • Server and Network Equipement Installation • User Interface and Daily Maintenance Customization • System Integration and Regulation • Interworking with Telecom Network • Data Collection and Transfer to Customer Logger • Technology Transfer, Training Materials and Training Courses 16

Thanks Do you have any questions? decision@decision. com. tw +886 02 2766 5753 http: www. edecision 4 u. com/index. html CREDITS: This presentation template was created by Slidesgo, including icons by Flaticon, and infographics & images by Freepik Please keep this slide for attribution 17