Enabling Effective Roaming

Through IPX Overcome the transition challenges, meet

customer expectations and monetize

premium services

slide 2 | BICS confidential | 23 June 2014

Agenda

Introduction

Interconnectivity / Signalling infrastructure

Commercial Agreements How-to Guide

Summary

Seize the opportunity

slide 3 | BICS confidential | 23 June 2014

Drivers for IPX/LTE adoption differ between

Subscribers and Mobile Operators

All IP

environment

Better user

experience

Real time High quality

Higher data

plans

All you can eat

packages

Reduced

prices

Return of

investment

Create

stickiness

Increase

revenues

Migration of

TDM to IP

Deploy new

technologies

S

U

B

S

C

R

I

B

E

R

S

M

O

B

I

L

E

O

P

E

R

A

T

O

R

S

Offer value

added

services

Create new

products

Serve new

markets

Hungry apps Social media New types of

applications

slide 4 | BICS confidential | 23 June 2014

LTE brings benefits not only to the

subscriber but also to mobile operators

RCS

slide 5 | BICS confidential | 23 June 2014

There is no 4G roaming experience as such but

one single roaming experience over 2G/3G/4G

Mobile subscriber always

moving between 2G/3G/4G

coverage

GRX

SCCP

OC Roaming Hub

SMS Hub

Roaming Solution Store

Diameter Signalling

IPX

2G

3G

4G

(LTE)

OC Roaming Hub

SMS Hub

Roaming Solution Store

OC Roaming Hub SMS Hub

VPMN HPMN

2G/3G

4G

(LTE)

slide 6 | BICS confidential | 23 June 2014

Key challenges for operators to deliver

LTE Roaming

Building footprint

Ensuring Business

continuity vs 2G/3G

Business Intelligence

across 2G/3G/4G

Creating new revenue

streams

How to simplify the LTE roaming set up and

management so that wide LTE footprint is quickly

available to roamers?

How to have consistent 4G roaming experience

vs 2G/3G?

How do I consistently manage roaming QoS and

Business Intelligence across 2G/3G/4G?

Can I have Value Added Services to optimize my

retail value proposition for 2G/3G/4G Roaming?

slide 7 | BICS confidential | 23 June 2014

MNO Retail Challenges … and

opportunities !!!

Market share

• How to preserve your customers?

Differentiation

• How to increase customer satisfaction

Fear-less Roaming

• How to wake-up the silent roamers!

• How to make roamers consume data like home?

slide 8 | BICS confidential | 23 June 2014

Being creative

Offering tailor-made packages

Letting the users control their usage

It’s marketing time for roaming!

slide 9 | BICS confidential | 23 June 2014

Connectivity models

Operator A

HSS

PDN

GW

Operator B

MME

Serving

GW

HOME NETWORK VISITED NETWORK

IPX (recommended)

LTE roaming architecture

Diameter (SIGNALLING)

GTP v2 (USER TRAFFIC)

Operator A

HLR

GGSN

Operator B

VLR/ MSC

SGSN

HOME NETWORK VISITED NETWORK

SS7 (SIGNALLING)

GTP v1 (USER TRAFFIC)

GRX

2G/3G roaming architecture

S6a interface

S8 interface

slide 10 | BICS confidential | 23 June 2014

IPX designed to take up the Mobile IP

future challenges at interconnect level

BICS’

IPX APPLICATION

SERVICE

PROVIDER

Other

IPX Provider

End-to-End QoS

MOBILE

OPERATOR

slide 11 | BICS confidential | 23 June 2014

IPX concept brings also ultimate

simplification in interconnectivity model Traditional Model

• One connection per service

• Static QoS

• Some gaps like lack of managed

access to OTT providers, no

support of HD Voice, etc…

• Adding new services takes longer

GRX

Signaling

Messaging

Voice

Operator A

Operator B

Operator C

RIM®

Connectivity

Data

Roaming

Signalling

MMS

SMS

Voice

LTE IPX

Voice Operator A

Operator C

Operator B

IPX • Single connection to access

multiple services

• Dynamic CoS allocation per

service/subscriber

• Managed access to OTT providers

• New services easy to add

• New services available

IPX Model

12

Roaming Agreements & Launch Letters

AA.12 and AA.13 (standard roaming agreement

templates) were updated back in 2003 to be technology-

neutral

No additional agreements need to be signed. Instead LTE is

launched as a new service

There is a specific LTE launch letter to confirm the

necessary IREG tests and TADIG validation have been

performed and that both parties agree for the launch of

LTE Roaming Service

Template available in BA.50 Annex 16

13

IOT for LTE in AA.14

IOT structure for LTE will be the same as 2G/3G

For data services (BA.27 updated)

• IOT will continue to support differential charging for example by QoS, following

the same possibilities as on 2G/3G:

• Data Volume, PDP Context duration, APN used, GGSN/GW used

• Based on Traffic Class (Conversational, Streaming Interactive, Background)

• Other QoS parameters: Guaranteed Bit Rat, Maximum Bit Rate. Allocation/Retention

Priority

• Principles apply both for Home Routing and for Local Break Out scenarios (as

for 2G/3G)

• Service-based charging not defined yet

For VoLTE (not defined in BA.27 yet)

• Legacy voice roaming charging and termination principles can be kept

• TAP format has been updated to offer technology neutrality

• LTE bearer can be charged separately as well using same structure as data

services

14

LTE Changes of IR.21

LTE Roaming specific information

New Section 20 LTE Roaming RILTE Information, such as: • Diameter Agent address,

• SMS roaming and Voice roaming implementation (CSFB, IMS, etc…..)

• Support of Class of Service (QCI)

• IR88 4.2.2.2 scenarios supported (defining the user plane interfaces in mobile

operator core network elements (SGW, SGSN, PGW, GGSN)

Common information

• Network Elements (Section 13)

all LTE/SAE Network Elements (MME,SGW,PGW,HSS,PCRF etc) to be included

• IP Addresses (Section 17)

Information on all IP addresses used by PMN (incl. the ones used by, SGW, PGW for

Control and user Plane)

15

Testing LTE Roaming

LTE-provisioned SIM cards need to be exchanged

IR.38 and TD.51 have been updated to support Data over LTE

IR.25 and TD.50 for VoLTE

• 3 new test cases have been added (LTE Location Update, LTE Cancel

Location, LTE Operator Determined Barring)

• Operators are expected to perform LTE IREG tests and TADIG validation

for Data services also for existing roaming agreements

IR24 is currently being adapted by IREG to include three new test

cases for Circuit Switched Fallback Voice calls, SMS over SGs

and Combined Attach

• Approach is to keep new test cases as simple as possible since these

scenarios do not require new inter-MNO interfaces IR

So far no new tests for VoLTE have been designed

16

LTE Impact on Clearing, Invoicing &

Settlement

TAP files have been updated for LTE Roaming

• For data services only: minor changes

From TAP 3.11: specific “Recording Entity Type” for PGW and GSW, enabling

possibility to clearly identify LTE Roaming traffic

• For VoLTE and SMSoLTE

From TAP 3.12: supports VoLTE and SMSoLTE with all necessary information on

Mobile Session (for VoLTE) and for Messaging Event (SMS over LTE) defined in

TAP files

RTDR

• Additional reports on VoLTE MO and VoLTE MT calls usage added

in RTDR since May 2012

• No changes in process

17

Impact on Fraud-Related Issues

& NRTRDE in LTE

TD.35 (NRTRDE specification) has been updated to

support LTE data roaming

Only minor changes, to support new network elements (S-GW, P-

GW) and new cause for termination value

VoLTE is currently being analysed by the Fraud Forum

slide 18 | BICS confidential | 23 June 2014

Summary

• LTE Roaming train is moving (fast), it’s time to

hop on!!!

• LTE Roaming adoption creates opportunities to:

• Consolidate all interconnect services over a common

transport technology

• Leverage on your wholesale carrier capabilities to

create new revenue streams

Thank you

Raphaël Glatt

Head of Signalling

raphael.glatt@bics.com

Tel: +32 496121140