VoLTE - New Interconnection Models are coming

1 Aberta

TIM Brasil VoLTE: New Interconnection Models are coming... November 6th, 2014 Robson Esteves

NETWORK INNOVATION

II International Workshop on Challenges and Trends on Broadband Wireless Mobile Access Networks – Beyond LTE-A

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Targets

This presentations aims to address the following points:

• Focus on VoLTE/IMS NNI aspects (technical, strategic…) • Share the current VoLTE Roaming routing schemes defined and its main characteristics and challenges; • Highlight the necessity to start discussions about the future IMS/VoLTE Interconnection, considering the national context and interconnection rules currently defined in Brazil;

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VoLTE: New Interconnection Models and Challenges AGENDA

VoLTE – Basic Concepts

VoLTE Roaming Scenarios

National Context and Open Points

Who we are

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Who we are

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TIM Brazil

MOBILE MARKETING - GLOBAL LANDSCAPE

Source: Merrill Lynch – Global Wireless Matrix 2Q14 (reference Data - 1Q14) | Top 5 + Brasil

Brazil ranks fourth in the customer base and service revenues rankings. Even with 138% mobile penetration the market still offers opportunity for MOU, Data/ARPU and Smartphone penetration growth.

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TIM Brazil

KNOWING TIM BETTER

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TIM Brazil

CUSTOMER BASE EVOLUTION

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Who we are

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VoLTE: Market Context

VoLTE – Worldwide Market Status

Co

mm

itte

d a

nd

Liv

e

•Hong Kong

•Japan

•Korea, South

•Singapore

•United States of America Ev

alu

atin

g •Austria

•Brazil

•Bulgaria

•Denmark

•Estonia

•Finland

•Kuwait

•Lithuania

•Malaysia

•Netherlands

•Philippines

•Poland

•Russian Federation

•Saudi Arabia

•Slovenia

•Sri Lanka

•Switzerland

•Taiwan H

ot

Pro

spe

cts •Australia

•Azerbaijan

•Canada

•China

•France

•Germany

•India

•Italy

•Mexico

•Norway

•Spain

•Sweden

•United Arab Emirates

•United Kingdom

Earl

y an

d In

tere

ste

d M

arke

ts

•Afghanistan

•Argentina

•Chile

•Colombia

•Costa Rica

•Croatia

•Ecuador

•El Salvador

•Guatemala

•Honduras

•Lebanon

•Nicaragua

•Nigeria

•Oman

•Panama

•Paraguay

•Peru

•Puerto Rico

•Qatar

•Slovakia

•South Africa

•Turkey

•Uruguay

•Venezuela

Source: GSMA 02/10/2014

• ~70 Operators are in different stages: • 10 have launched VoLTE in:

Hong Kong – HKT, 3 HK Singapore – Singtel South Korea – KT, LG U+, SK Telecom Japan - NTT DoCoMo US - ATT, Verizon Wireless, T-Mobile

• ~40 are in the process of deploying VoLTE; • ~20 Operators are trialing VoLTE

Source: BICS

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VOLTE DEVICES


Galaxy Note 2 LTE SHV-E250S Galaxy Note 10.1 LTE 32GB Galaxy Note 3 SM-N900S Galaxy Note 3 SM-N9008V TD-LTE Galaxy Pop SHV-E220S Galaxy S3 LTE SHV-E210 (K,L,S) Galaxy Grand SHV-E270 (K,L,S) Galaxy S4 GT-i9507 / i9507V Galaxy S4 LTE SCH-R970C Galaxy S4 LTE SHV-E300 (K,L,S) Galaxy Mega 6.3 LTE SHV-E310S Galaxy S4 SHV-E330 LTE-A (K,L,S) Galaxy Golden SHV-E400 (K,S) Galaxy Win SHV-E500S Galaxy 4 Zoom LTE SM-C105S Galaxy Round LTE SM-G910S Galaxy S5 SM-G900 (A,D,F,P,R4,S,T) Galaxy S5 SM-G9006V Galaxy S5 SM-9008S Galaxy S5 SM-G9009 (D,M,V)

Optimus LTE2 F160LV Optimus F180S Optimus Vu2 F200 (K,L,S) Optimus Vu3 F300 (K,L,S) Optimus GX F310L Optimus G2 F320S Optimus G Pro F240S Optimus LTE III F260S Optimus G Flex F340S

Vega IM-R3 A850 (L,S) Vega No 6 IM-A860S Vega Iron IM-A870S IM-A880S Vega Secret Note IM-A890S

Ascend D2 LTE

Padfone X PF500KL

Iphone 6

Source: GSA

http://www.google.com.br/url?url=http://mahesh69a.deviantart.com/art/Huawei-Logo-Icon-255781229&rct=j&frm=1&q=&esrc=s&sa=U&ei=OFssVPj1HMvmsASUnoH4DQ&ved=0CBYQ9QEwAA&usg=AFQjCNEz0w9XPub7_sG830Tf-Og01RHHaA

http://www.google.com.br/url?url=http://www.androidguys.com/2012/12/10/pantech-rumored-with-1080p-hd-display-for-vega-im-a860/&rct=j&frm=1&q=&esrc=s&sa=U&ei=tlssVJ3qGq3gsASwsoGACQ&ved=0CBYQ9QEwAA&usg=AFQjCNG4NmPULiCqU-b0igVL4sPa_HQCbw

http://www.google.com.br/url?url=http://icon-international.tv/?page_id=60&rct=j&frm=1&q=&esrc=s&sa=U&ei=5FssVNiWBbeIsQS69oHQBA&ved=0CB4Q9QEwBA&usg=AFQjCNGmTlTTQziDFUgwLxjFdbUldeZFPw

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VOLTE & VoWiFi


Source: http://www.apple.com/iphone-6/connectivity/

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VoLTE – Standards (1/2)

The GSMA VoLTE (Voice over LTE) initiative was formally announced on 15th February 2010. In establishing the VoLTE initiative, GSMA has adopted the work of the One Voice Initiative as the basis of the work to lead the global mobile industry towards a standard way of delivering voice and messaging services for Long-Term Evolution (LTE). Using IP Multimedia Subsystem specifications developed by 3GPP as its basis, GSMA have expanded upon the original scope of One Voice work to address the entire end-to-end voice and SMS ecosystem by also focusing on Roaming and Interconnect interfaces, in addition the interface between customer and network.

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VoLTE – Standards (2/2)

VoLTE/VoHSPA related key technologies and specifications are ready.

Main focus in this presentation

Source: Huawei

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LTE Roaming Scenarios: Home Routed x Local Breakout (LBO) - Main Concepts

Home Routed Local Breakout (LBO)

• Home Routed: “similar” (in topology terms) that

we have today in 2G/3G networks. • LBO: procedure that allows to access locally,

services in the visited network, given

opportunities for optimize latency and transport

network usage between HPLMN and VPLMN.

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LBO and IMS – 3GPP Scenarios (3GPP - TS 23.228)

P-CSCF

S GW

V-PCRF

S1-U

Gx

S9

Rx

VPLMN HPLMN

E-UTRANUE PDN GW TrGW

H-PCRF

IBCF

Rest

of

IMS

core

MRFP

S-CSCF

Gm

SGiOR

Mx Mx

= UE’s IP point of presens (IP-PoP)

= Media

Ix

P-CSCF

S GW

V-PCRF

S1-U

Gx

S9

Rx

VPLMN HPLMN

E-UTRANUE PDN GW TrGW

H-PCRF

IBCF

Rest

of

IMS

core

MRFP

S-CSCF

Gm

SGiOR

Mx Mx


= Media


= Media

Ix

1: P-CSCF

located in

VPLMN

P-CSCF

S-GW

V-PCRF

S1-U

Gx

S9

Rx

E-UTRANUE PDN-GW

H-PCRF

Gm

IMS Access

GW

SGi

VPLMN HPLMN

Rest

of

IMS

core

MRFP

S-CSCF

OR

Mw


= Media

Iq

P-CSCF

S-GW

V-PCRF

S1-U

Gx

S9

Rx

E-UTRANUE PDN-GW

H-PCRF

Gm

IMS Access

GW

SGi

VPLMN HPLMN

Rest

of

IMS

core

MRFP

S-CSCF

OR

Mw


= Media


= Media

Iq

2: P-CSCF

located in

HPLMN

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VoLTE - Basic Concepts

IPX

The internet Protocol (IP) Packet eXchange (IPX) Network is an inter-Service Provider IP backbone which comprises the interconnected networks of IPX Providers and General Packet Radio Service (GPRS) Roaming eXchange (GRX) Providers. An inter-Service Provider IP backbone network which connects Mobile Network Operators (MNOs), Fixed Network Operators (FNOs) Internet Service Providers (ISPs) and Application Service Providers (ASPs) .

Source: GSMA IR.34

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VoLTE

VoLTE is more than just VOICE …….. VoLTE is an ENABLER !!

Sou

rce: Bo

uygu

es Telecom

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VoLTE

Operator A Operator B

Operator C

NNI

???

??? ???

The “VALUE” of this ENABLER depends also on how Telcos will provide these Services Across different Operators.

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VoLTE

OTTs? It’s done…

Operator A Operator B

Operator C

TRANSPARENT

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VoLTE Architecture – Main Components (SIMPLIFIED) and NNI’s

CS Networks

NNI

NNI

Specified in Brazil (for TDM)

Not yet specified in Brazil (IP-IP for Multimedia Services)

IP ACCESS LAYER (LTE RAN + EPC)

IMS Core

TAS AS 2 AS 3

Operator A

IP ACCESS LAYER (LTE RAN + EPC)

IMS Core

TAS AS 2 AS 3

Operator B

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Who we are

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VoLTE - Roaming Scenarios

Roaming Subscriber From Operator A

Roaming Subscriber From Operator B

The media and signaling are routed directly between the two operators where the principle used is that home network delegates the routing to the visited network.

Current CS Voice Roaming and Interconnection Model

Source: NTT DoCoMo

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Technically, the IMS/VoLTE framework , that is, an ALL IP infrastructure, allows more efficient media data routing (i.e. voice, video etc) strategies, as demonstrated in this scenario, improving latency, transport resources consumption etc . However, potentially, as several different IPX providers could be involved for different tasks – one transporting signaling and others media, it will not be possible for IPX operators that just transports media, to apply charge for voice calls on a time basis.

Considering that GSMA positioned VoLTE as an extension to existing voice services, 3GPP developed additional routing schemes that are equivalent to existing circuit switching, allowing to replicate the existing voice charging rules, also for VoLTE calls.



Scenario A: VoLTE Roaming with LBO and direct media routing

Source: NTT DoCoMo

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Three key operational requirements have been identified: 1. Routing media for Voice & video over IMS (VoIMS includes IR.58, IR.92 and IR.94) when call originator is Roaming should be at least as optimal as that of current Circuit Switched (CS) domain. 2. The charging model for roaming used in CS domain shall be maintained in VoIMS. 3. Allow the HPMN to decide, based on service and commercial considerations & regulatory obligations, to enforce the routing of the traffic to itself (home routing).

The development that addressed these issues was called R.A.V.E.L.1 – Roaming Architectures for Voice Over IMS with Local Break Out. (3GPP Release 11)

A big target of this development was to provide routing schemes that guarantee that voice data flows and signaling flows should be routed on the same path.

IR.65 ( IMS Roaming and Interworking Guidelines ) – Operational Requirements


1- There is another initiative in GSMA, called REVOLVER, that is discussing others alternatives and new scenarios for VoLTE Roaming.

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Basic service-aware charging principles can be applied: • Voice as MoU • SMS as messages • All other IMS traffic as MB •‘Signaling loop’ between VPLMN and HPLMN A Charged?

Scenario B: RAVEL Scheme I – VoLTE Roaming w/ LBO and media routed via HPMN B party

Other aspects: • New function must be integrated – TRF (Transit & Routing Function) • Does not leverage HPLMN x VPLMN interconnect relationships for VPLMN routed traffic and reduces HPMN media control; • OMR (Optimal Media Routing) must be applied avoiding “tromboning media”.


Source: NTT DoCoMo

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Scenario C: RAVEL Scheme II – VoLTE Roaming w/ LBO and HOME ROUTED




Basic service-aware charging principles can be applied: • Voice as MoU • SMS as messages • All other IMS traffic as MB No TRF is needed.

Some reasons to apply this model: • The calling party is subject to lawful interception which needs to be performed by the home operator; The HPLMN of the calling party needs to insert

during the call, tones or announcements; It is cheaper for the home network to route

the call to the destination.

Source: NTT DoCoMo

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Who we are

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National SMP (Mobile service) Interconnection - Current Regulation – Voice Services

VoLTE - National Context and Open Points

VIVO

CLARO

OI

TIM

CN A

SDH / PDH

Ntw

VIVO

CLARO

OI

TIM

CN n

SDH / PDH

Ntw

TDM Interconnections

For each CN (National Area Code), potentially, we replicate these scenarios “n times”, consuming TDM resources, Network management, basic infrastructure, MSC/MGW interfaces etc.

For STFC (Fixed service), there are many other interconnection points, considering the Local Area concept.

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“Some” Open Points / Suggestions for discussion: How will the IP-IP interconnection model in Brazil be designed to

support the expected services over VoLTE infrastructure? (i.e.: voice, video, messaging, files transferring, etc)

Will current interconnection models (“CN based” for SMP and “Local Area based” for STFC) be replicated also for IP?

Which are the “best” routing schemes in Brazilian context? (considering: regulatory, geographic and economics aspects)

Does it make sense to define different routing rules for different services?


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Some “practical” initial propositions (just promoting the discussions!)


• Develop an interworking framework among MNOs; • Assure a seamless E2E service experience; • Define, develop and agree a VoLTE interconnection model.

Retail and Wholesale

• Evaluate regulatory and technical aspects related with different labeled communication streams (i.e. voice, HD voice, HD video, messaging, file sharing etc.);

• Evaluate the regulatory issues related to pricing x Byte models in this context;

Regulatory Scenario

A NEW REGULATORY AND COMPETITIVE LANDMARK IS NECESSARY... and the discussion begins now

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TIM is committed to QUALITY and MOBILE BROADBAND, leading the INNOVATION and the NEW.

NEW 4G ECOSYSTEM will push the development of new services and applications that meet all SOCIETY.

NEW BUSINESS MODELS and NEW REGULATORY LANDMARK are MANDATORY for this transformation.

BRAZIL SHALL HAVE A NEW ROLE in worldwide LTE agenda, pushing the standards for a Brazilian reality.


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THANK YOU! ([email protected])

VoLTE - New Interconnection Models are coming

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