Carl Ford, Crossfire Media
Dan Warren, GSMA
IMTC VoLTE
Webinar
Manuel Vexler, Huawei
Voice over LTE: Industry, Standardization
and Market Realities and Perspectives
Stefan Svensson, Ericsson
Geng Wu, Intel Anatoli Levine, RADVISION

Voice over LTE: Industry, Standardization and Market
Realities and Perspectives
• How to ask questions:
– Twitter @IMTCORG ((http://twitter.com/imtcorg)
– Skype chat: imtcorg
• Presentation will be available at IMTC
SlideShare Account:
http://www.slideshare.net/imtcorg
2

VoLTE Background and extensions
Dan Warren, Senior Director of Technology, GSMA
© GSM Association 2011

VoLTE – to date
 History – „One Voice‟ profile handed to GSMA and became IR.92, the UNI SIP
Profile for UE to IMS network.
– First version of IR.92 completed April 2010 - continuing improvements via
GSMA CR process.
 Roaming and Interconnect (and in particular the combination of the two), have
proved difficult to complete.
– Technically optimal approaches do not take into account the need to interwork
or fall back to existing Circuit Switched techniques.
– Commercial requirements further restrict the technical solution.
– Work in 3GPP initiated to address the requirements – RAVEL work item.
 Now, work to extend beyond the original VoLTE service has spawned new threads
of work.

Current status of VoLTE
 VoLTE service expected to appear first in North America during late 2011/early
2012.
– Device implementation combines VoLTE with Wideband codec, Video, RCS.
– Baseband implementation but expected to have OS accessibility to some IMS-
based features.
 In the meantime, Europe and Asian operators likely to launch first with CSFB.
– Delays in SR-VCC capability making CSFB a likely first Voice deployment for
many operators.
– CSFB still viewed as sub-optimal - improvements in set-up time for CSFB being
proposed in 3GPP.
 Everyone is heading to VoLTE – just taking different paths to get there.

VoLTE Extensions
UNI profile
Over 3G
The original One
Under approval
Voice profile with Under approval
enhancements
3G access
Terminal to Network
LTE access Network
To be enhanced once 3GPP
work is complete
IMS with
CS voice

IR.64 – IMS control for all voice calls
Service Centralization in the IMS: IMS “controls” both circuit and packet voice calls
Two main features: T-ADS
 Terminating Access Domain Selection CS
IMS
– Determine whether to route terminating PS
call to CS or PS access
 Single Radio Voice Call Continuity SRVCC
CS
– Maintains IMS call control when moving IMS
from LTE to 2G/3G CS PS

IR.94 – Video over LTE
Normal call with voice and video Early media
mono or bidirectional (video announcement, video ring “tone”,
…)
Network Network
Multi party call with voice and Dial-in to external video conference
video system
Network
Network
Video switching Video switching

IR.58 – extension of IR.92 to 3G HSPA bearer
 Minimum mandatory set of 3GPP features that a wireless device and network are
required to implement in order to guarantee an interoperable, high quality IMS-based
telephony service over HSPA
 IR.58 is very similar to IR.92 (IMS profile for IR.92 IR.58
voice and SMS over LTE) and inherits as much
as possible from IR.92, in particular: IMS
features
IMS
features
 The document framework, with similar IMS IMS
corresponding section numbering whenever possible media media
 The document contents, with a simple reference to LTE radio HSPA radio
capabilities
IR.92 when the content is agreed to be equivalent capabilities
Bearer Bearer
management management
Other Other
functionalities functionalities

How to prove it works - IOT
 IMTC SuperOp, May 2011
– Handset focus but struggled with lack of handsets
available from vendors.
– IMTC hosting a VoLTE webinar – 30th Nov.
 MSF VoLTE Interoperability Event, September 2011
– Hosted by Vodafone and China Mobile.
– Demonstrated calls, interconnect and roaming.
– Detailed results announced 8th November.
– Planning further IOT on VoLTE with GSMA and ETSI
for 2012.

THANK YOU!
dwarren@gsm.org
© GSM Association 2011

VoLTE (and SMS over LTE!):
An Infrastructure and Device
Manufacturer Vendor
Prospective
Nov. 2011
Manuel Vexler
Chief Marketing Officer IMS/NGN
HUAWEI TECHNOLOGIES CO., LTD.

Planning considerations for VoLTE and SMSoLTE
100.0% $780
Mobile Operators
90.0%
80.0%
$760 Forecast
70.0% $740  Voice will be the primary
60.0%
$720 income source in next five
50.0%
$700
years
40.0%
 Mobile voice will
30.0% $680
20.0% continue to be in high
$660
10.0% demand from consumers
0.0% $640
2009 2010 2011 2012 2013 2014
Is mobile SMS
growing at the
expense of
mobile voice?
HUAWEI TECHNOLOGIES CO., LTD. Page 13

VoLTE Prospects 2012-2015
2010.12.05 LTE launched, 2010.12.24 LTE launched,
in 2013 LTE will cover 2/3 in 2015 LTE will cover
population, in 2012Q4 70% population, on
VoLTE will be launched 2012.3 launch VoLTE
2011Q2 LTE will launch, in
2010.12.01 LTE launch,
2013 LTE will cover whole
on 2011Q4 support CSFB；
US, and in 2013 will
launch VoLTE；
Voice is mandatory for EPC/LTE
launching plans
166
24
HUAWEI TECHNOLOGIES CO., LTD. Page 14

Fast Developing Ecosystem: 100+ LTE Devices Available
Network side: Standard & technology approach mature
• GSMA IR92.30 (VoLTE Profile)
• 3GPP R10 (MMTel、ICS、eSRVCC、PCC）
• GSMA RCS 2.0/3.0/4.0 GSMA VoLTE
• Clear Roadmap from major supplier
Initiative
Terminal side: Development of LTE handset is speeding up
• 100+ kinds of LTE devices are available now • QC smart phone chipset roadmap: 2011H2
• 6 of which are handsets • Expected IMS/SRVCC handset: 2012H2
• More handsets in pipeline
Smartphone ES:2Q2011
Launch LTE Service in 2010.Dec： CS:4Q2011
• HTC Thunderbolt
• Motorola DROID Bionic 4G Modem CS:3Q2010
• LG Revolution (LTE/HSPA+)
• Samsung 4G LTE Smartphone
Modem+VOICE ES:4Q 2011
Will launch LTE Service in 2011H1 (HSPA+/LTE
• What will happen on terminal side ? TD-SCDMA)
HUAWEI TECHNOLOGIES CO., LTD. Page 15

VoLTE end-to-end: a phased approach
VoIMS/SRVCC Trial VoIMS/SRVCC Target LTE mobile
2011~2012H1 2012H2 ~ voice
LTE VoIP handset
•IMS/SRVCC commercialization
•Coexist of CSFB &IMS，early handset &
inbound roamer support
•Service consistence via ICS arch.
CS Voice, LTE Data
2011H2 ~
Initial LTE mobile
voice
Early LTE handset VoLTE
•CSFB Commercialization Opportunity
•Other LTE voice options
Voice over CPE/Dongle Initial LTE Voice
2011 ~ Solution
LTE CPE/USB Dongle
•SMSoSGs for LTE data card
•VoIP over LTE CPE
•VoIP/RCS via Soft client + LTE USB dongle
2011 2012 2013 2014
HUAWEI TECHNOLOGIES CO., LTD. Page 16

Huawei E2E VoLTE Solution Overview
SingleSDB
(HLR/HSS/PC
RF)
CTAS
Fixed、Mobile
SingleCORE (CS、IMS) FMC/ICT Service…
2G/3G MGW MSC-S
IMS CTAS
Core
RCS AS
SBC IM、Presence、NAB、sharing
LTE SingleEPC
Terminal Network Service
Strategy： Strategy： Strategy：
• Diverse LTE terminals • Keep it simple as possible • Enriched end user experience
Solution： Solution： •Solution：
• VoIP capable LTE CPE • SingleCORE • RCS & integration with SNS
• VoIP/RCS Client + LTE Date card • SingleEPC • HD Voice and Video Call
• Mobile VoIP capable LTE handset • SingleSDB • FMC & ICT convergent service
HUAWEI TECHNOLOGIES CO., LTD. Page 17

Summary
End User Acceptance
Complexity Challenge:
Challenge:
Multiple cores used to
Network Evolution Must ensure voice quality
deliver, voice, video and
Challenge: and rich experience
connectivity in LTE
Difficult to upgrade existing
CS/HLR Huawei response:
Huawei response:
SRVCC/eSRVCC, HD
SingleCORE
Huawei response: voice & video, RCS, and
Keep them ‘as is’ and ICT convergence…
minimize the impact to
existing network
HUAWEI TECHNOLOGIES CO., LTD. Page 18

Thank you
www.huawei.com
Copyright©2011 Huawei Technologies Co., Ltd. All Rights Reserved.
The information contained in this document is for reference purpose only, and is subject to
change or withdrawal according to specific customer requirements and conditions.

Enrich experience
Simple Easy to deploy
Aggregation design in
SingleCORE@Mobile solution
IP-SM- MGCF IM-SSF
SCC AS
GW Anchori
IBCF
Fixed ng
MMTel SRVCC
voice VIG
Common Server IWF MSC-S
VoLTE/VoBB PSTN renewal TAS CSFB (MSOFTX3000)
mAGCF
(ATS9900) Proxy
key role in FMC evolution
HLR
SBC ATCF ENUM/
SAE- DNS
HSS
P-CSCF ATGW PCRF
IMS-
SE2600 HSS
SingleSDB
ATCF/ATGW is defined in 3GPP R10 for eSRVCC
HUAWEI TECHNOLOGIES CO., LTD. Page 20

VOLTE – Ericsson perspective
Stefan Svensson
Senior Product Manager,
Telephony Evolution
Business Unit Networks

Volte is happening now
Operators planning commercial launch mid-2012
Terminal industry moving into IODT/IOT phase
Network vendors providing products/solutions
LTE deployed on frequencies relevant for VoLTE
LTE coverage increasing fast

VOLTE - network and service evolution
LTE
CSFB LTE LTE LTE LTE LTE
LTE LTE LTE LTE LTE
LTE LTE LTE LTE LTE
CS
LTE LTE
CS
LTE
LTE LTE LTE
Network SRVCC 3G / HSPA
LTE
LTE
LTE
LTE LTE
Evolution LTE LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE
LTE LTE LTE LTE LTE
LTE LTE LTE LTE LTE LTE
LTE LTE LTE LTE LTE
Spotty LTE coverage Areas with continuous Continuous IMS voice
LTE coverage over PS coverage
Multi-media
Extended supplementary
Service VoLTE services
(IR.92/94
Evolution )
Multi-access
Multi-device

End-to-end approach to ensure telecom
grade services
SPD [ms]
30 0
250
20 0
IMS and UE delays
15 0 Estimated AMR delay
MOBILE CORE Average RTP latency
10 0
50
0
Lab Field
EPC test test
Call set-up time[s]
NETWORK 6
MANAGEMENT
5
LTE 4
Lab tests
3 Field tests
Sofia:
Luigi is amazing
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IDLE-IDLE IDLE-CONNECTED CONNECTED-IDLE CONNECTED-
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Volte is happening now
Realization happens now
Industry aligned
Technology efficiency & superior end-user experience
VoLTE - beyond voice communication
“End-to-end” for optimized introduction

Public | © Ericsson AB 2011 | 2011-11-30 | Page 26

VoLTE – Intel Perspective
Dr. Geng Wu
Chief Architect
Wireless Technology Division

Many Connected Compute Devices
But deliver different, fragmented experiences

Our Goal: Improve the Experience
Desktops Laptops Netbooks Tablets Smartphones Smart TVs Embedded
Enabling a Consistent Experience Across the Continuum

VoLTE Offers Extensive Capabilities
Basic Services
requirements
Voice
SMS Emergency
call
Security  Voice: AMR codec, WB-AMR
Supplementary optional
Roaming services  Security: IMS AKA for authentication
and encryption
 Supplementary services: 3GPP
MMTel TS 24.173
 Emergency Call: 3GPP Release 9,
HD Voice TS 23.167
Circuit Switched  SMS over IP: 3GPP TS 23.272,
Fallback (CSFB) Video and multimedia TS23.221,TS 24.301
 SRVCC : 3GPP TS 23.216,
Converged services
Single Radio Voice optional
Call Continuity (SRVCC)  CSFB : 3GPP TS 23.272
QoS (reserved BW)  Signaling Compression: 3GPP TS
Video/Audio 24.229
Packet switched
Conferencing
handover Standard based on
Other services 3GPP
Interoperability Enable value
requirements added services

Rigorous Testing Process is Essential
IP Multimedia Subsystem VoIP/SIP
IP based operator network
Services VoLTE Provisioning Devices
server server
VoLTE
Devices
IP
Backhaul Internet
LTE RAN
IMS Gateway
IMS Enabled
Legacy
MGW PSTN
phones
Legacy RAN

Thank you!

Voice over LTE: Software Vendor and
IMTC IMS AG Perspective
Name: Tsahi Levent-Levi Title: CTO, Technology Business Unit and Co-Chair, IMTC IMS AG
Anatoli Levine Sr. Director, Product Management and President, IMTC

Interoperability
Signaling
Capabilities
Media
Technologies
Standard ≠ Implementation

Telecom Standardization Process
Specification
Certification Implementation
VoLTE
IOT testing Testing

Telecom Standardization Process
Specification
Certification Implementation
VoLTE
IOT testing Testing

Telecom Standardization Process
Specification
R&D
Certification Implementation
VoLTE
IOT testing Testing

Telecom Standardization Process
Specification
R&D
Certification Implementation
VoLTE
IOT testing Testing
QA

Telecom Standardization Process
Specification
R&D
Certification Implementation
VoLTE
IOT testing Testing
QA

Telecom Standardization Process
Specification
R&D
Certification Implementation
VoLTE
IOT testing Testing
QA

What does the IMTC IMS AG Does?
Test specification
Read the standards
Write test cases related to interoperability
F2F Events
Test products of different vendors
Report back specification “bugs” to the GSMA

Benefits of IMTC
By Engineers for Engineers
“devoid” of politics
Focus on implementations and testing

Where are the Software Vendors?
Protocol stacks and
Specification IMS clients
supporting VoLTE to
ease development
R&D effort of vendors
Certification Implementation
VoLTE
Testing tools for
development, testing
and certification of
IOT testing Testing
VoLTE products
QA

Want To Know More?
Visit our site – www.imtc.org
Blog – blog.imtc.org
Email marketing@imtc.org
Or contact :
IMTC Secretary
IMTC, Inc.
2400 Camino Ramon, Suite 375
San Ramon, CA 94583
Phone : +1.925.275.6600
Fax : +1.925.275.6691
Email : secretary@imtc.org
44

Thank You!
Carl Ford, Crossfire Media Dan Warren, GSMA Manuel Vexler, Huawei Stefan Svensson, Ericsson Geng Wu, Intel Anatoli Levine, RADVISION