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GRX – LTE – VoLTE – RCS

IPX: Enhance your

International BusinessMichael VAN VEEN, SAP

WASL WG, April 25-26, 2017

Public

Introducing SAP Digital Interconnect

© 2016 SAP SE or an SAP affiliate company. All rights reserved. 3Public

SAP Digital Interconnect simplifies complex digital transformations

SAP Digital

InterconnectSAP

$16 trillion of consumer purchases worldwide

use SAP systems

98% of the top 100 most valued brands in the world are SAP customers

76% of the world’s transaction revenue

touches an SAP system

87% of Forbes Global 2,000 companies are

SAP customers

1000+ mobile operators connected

About 1 billion messages are processed daily

Top 3 social media and messaging ecosystems

99% of all mobile subscribers reached

200+ countries reached

500+ enterprise customers

Global e-mail delivery


Combining SAP GRX/LTE roaming

footprint

and PCCW Global IPX Voice/VoLTE

capabilities

in a single IPX domain

Announced at WAS, 28 March 2017

IPX Consolidation with PCCW Global


IPX: textbook summary

Technical

A single connectivity model for all interconnect

and roaming services

Three connectivity models

1. Bilateral transport

2. Service aware transport

3. Service aware hubbing

Secure, private, …

Classes of Service, end-to-end KPIs, …

Etc.…

Commercial

Transparency of costs

Break-down: transit plus termination

Cascaded of payments:

SP-A → IPXP → (IPXP →) SP-B

IPX Provider cascade termination charge (and split

transit rate)

Service Provider B keeps termination charge

End-to-end SLAs

Etc.…

In essence: a global network to enable your international roaming and interconnect business

But should you not expect more ?

Enhance your international

roaming business


Primary use of IPX today: Data Roaming

Customer expectation:

When abroad, get the same services and

functions as enjoyed at home

• Same high data speeds

• Same voice quality

• Same functionality

• Same charge

Operator challenges:

Establish global LTE roaming footprint

• Market is doing well

• Rate at which routes are opened is

accelerating

Steering of Roaming

• Best rates and best quality

• Indiscriminative, or based on user profile

• Should steering be LTE compliant ?


Upgrading the Steering platform to LTE

Some good reasons:

1. Latency of roamer registration is likely to increase – unless it is managed by a steering platform,

2. Interoperability with CSFB: calls may not come through or UE may not properly reconnect to LTE

after the call

3. LTE registration might be recognized by steering platform as ”manual selection”: User Equipment

may not be steered at all

Negative impact on revenue and user experience

→ Upgrade steering platform: invest, or go cloud ?


IPX cloud-based alternative: Steering as a service

HPLMN

HSS

VPLMN A

DEA MME

IPX

domain

S6

S6

SAP DRADEA

VPLMN B

IPX peer

DRA peer

steering

platform

DEA MME

S6

GUI


VoLTE Roaming: do we need that ?

Plenty of reasons to launch VoLTE

Spectrum efficiency, technical efficiency, add-on

features (RCS)

But the first thing that users will notice is

improved call quality

Extending VoLTE to roamers delivers

Consistent quality of service

Consistency in functionality i.e. end-use services

Cost saving to the operators


VoLTE Roaming: S8HR or Local Break-Our (LBO) ?

Do you want the media to be sent

back to you (as data traffic) so you

can route the call yourself ?

From an interconnect point of

view:

Backhaul traffic charged as data

traffic

Are you happy for the visited

network, your roaming partner, to

route the call for you?

From an interconnect point of

view:

Similar model to VoLTE interconnect

S8HR LBO


S8HR: voice calls routed by the Home network

Implication: substantial latency on roamers’ regional calls

Panama Roamer in AsiaData traffic Voice call

Regional Voice call

HPLMN


LBO: voice calls routed by the Visited network

Panama Roamer in Asia

Voice call

Regional voice call

VPLMN

No latency issues – but requires IMS interconnect between HPLMN and VPLMN

Only relevant for no more than 15% of the calls !

At least 85% of the calls need to be routed to home network / home continent (GSMA study)


Industry consensus: S8HR home network routing

S8HR has some significant advantages over LBO

Less complexity, and is quicker and cheaper to implement

Existing billing tools can be used

Critical point: in S8HR the IPX is not aware of the service layer

IPX value-add: advanced QoS reporting

IPX Provider should not treat VoLTE S8HR traffic like normal data roaming traffic

Can provide extensive monitoring and reporting tools

Enhance your international

interconnect business


VoLTE interconnect – main challenges and how to address them

Scaling up

Establishing IMS NNIs is a lot of work

Using the IPX hubbing model will help to speed

things up

Connect once to reach many

Nothing new

Operators already use Voice carriers to route

traffic to other networks

Operators already use IPX hubs for MMS and

Diameter

Establish call routing

Establish call destination

Circuit-switched networks use telephone numbers

IP networks use service specific Universal Resource

Identifiers (URIs)

Is B-number VoLTE-active at time of call ?

Technical solution: ENUM / MNP

Business decisions

Who makes the routing decision ?

How to make your network discoverable for

inbound calls ?


Traditional model

Iterative Querying of ENUM database

MNO A queries ENUM databases until

solution is found

MNO maintains routing decision

Pro: control over cost to 3rd party

Con: need resources to set up and maintain

ENUM infrastructure

ENUMT1/T2

IPXENUMT1/T2

enum

MNO A IPX Transport Hub A

enum

MNO B

ENUMT1/T2

Iterative, MNO «A» perspective

1

1a

2

2b


Alternative model: IPX as ENUM engine

Recursive Querying of ENUM database

MNO A only queries IPX ENUM database

If needed, IPX queries 3rd party ENUM

databases on behalf of MNO, until solution is

found

MNO maintains routing decision

Pro: no need to set up and maintain ENUM

infrastructure; still retaining routing decision

Con: ENUM query cost to IPX provider

ENUMT1/T2

Retains Routing Decision

IPX( ENUMT1/T2 )

MNO A IPX P Hub

enum

Local or remote ENUM Data Bases available to IPX P

ENUMT1/T2

1a

1b

2a

ENUMT1/T2

ENUMT1/T2

2b enum

2c

2d enum

2f enum

If unresolved :

If unresolved :2e


Full service IPX

MNO A hands off all traffic to IPX provider

IPX provider performs ENUM queries and

makes routing decision

Iterative, IPX Provider full Hub Perspective

No ENUMoperated / available

Full call handover

IPX P( ENUMT1 / T2 )

MNO A IPX Provider full HUB Function

Call

MNOs In Country B

ENUMT1/T2

2a

ENUMT1/T2

ENUMT1/T2

2b enum

3a

3b enum

4b enum

If unresolved :

If unresolved :4a

Routing if resolved

Routing if resolved

Routing


Dealing with inbound traffic

Standard model

Advertise your network gateway address

Offer access to your ENUM database

IPX Provider as inbound VoLTE proxy

IPX Provider manages your inbound ENUM

queries and inbound calls

Standard

Model

IPX

Proxy

Main considerations

Cost & Network Security


RCS is back !


Business considerations

Person-to-Person communication

Many free apps can do what RCS can do

Maybe not as good – but they are free of charge

→ Tough business model

Application-to-Person

Companies always looking for better ways to

communicate with their clients

→ RCS as a business opportunity

IPX RCS interconnect: Interconnectivity between operators in the secure environment of the IPX

IPX Business Partner: Aggregator of A2P traffic

Summing up …


IPX: Enhance your international business

IPX is the de facto platform for international roaming and interconnect traffic, but it can be

much more than that

Functions like cloud-based steering advanced QoS reporting can improve your data and VoLTE

roaming business and delivery a better service experience to your customers

VoLTE and RCS interconnect can be made secure and cost-efficient when routing tasks are

performed the IPX provider

Thank youContact information:

Michael VAN VEEN

Global Sales Director IPX

e: [email protected]

m: +393 484 090 668

mailto:[email protected]

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