The wireless industry is moving toward a richer, packet based voice on IP. However, traditional mobile Circuit Switched (CS) voice has a long life during the transition to carrier grade VoIP. Qualcomm’s comprehensive voice evolution technology leadership provides all aspects needed for the successful transition to carrier grade VoIP: We make the 3G CS voice more efficient (1X Advanced and WCDMA+), and lead the mobile VoIP delivery technologies with IMS VoIP over LTE (VoLTE) and HSPA+, provide the necessary transitions technologies between circuit switched voice and IMS VoIP; And finally, we provide the voice quality technologies to ensure the best voice experience for 3G CS voice, IMS VoIP as well as OTT VoIP. For more information please visit www.qualcomm.com/wcdma Download the presentation here: http://www.qualcomm.com/media/documents/voice-evolution-volte-vohspa-wcdma-and-quality

1. The Voice Evolution
VoLTE, VoHSPA+, WCDMA+ and Quality Evolution
April 2012

2. Qualcomm is a Leader in Wireless
2012 2013 2014 2015+
Rel-8 Rel-9 Rel-10 Rel-11 & Beyond
LTE LTE Advanced
(FDD&TDD Commercial)
Rel-7 Rel-8 Rel-9 Rel-10 Rel-11 & Beyond
HSPA HSPA+ HSPA+ HSPA+
(Commercial) (Future) Advanced
WCDMA WCDMA+
Voice Efficiency M2M Efficiency
CDMA2000
1X 1X Advanced
(Commercial) (Future)
Rev A Multicarrier H/W Upgrade Phase I Phase II
EV-DO EV-DO Rev. B DO Advanced
(Commercial) (Commercial) (Future)
802.11 g 802.11 n 802.11 ac/ad
Wi-Fi Wi-Fi
(Commercial) (Future)
Commercial
2 Note: Estimated commercial dates. Created 04/18/2012

3. Evolving Voice for More Data, Better
Quality, Richer Experience
Qualcomm: Comprehensive Voice Evolution Leadership
 1X Advanced, WCDMA+, IMS VoIP over LTE, HSPA+, EV-DO, and seamless transitions
2G/3G Provides LTE Voice Today & Future VoLTE Fallback
 CSFB widely deployed, future VoLTE needs SRVCC to ensure seamless voice
VoLTE with VoHSPA+ Ensure Rich Voice Everywhere
 Ensures a seamless and consistent rich voice user experience
WCDMA+: More Efficient Voice to Support More Data
 Triples WCDMA circuit switched voice spectral efficiency
Qualcomm Enables The Best Voice Experience
 Leading Voice Quality Technologies for 3G circuit switched voice,
IMS VoIP and OTT VoIP (HDOn, Calliope Fluence..)
3

4. Circuit Voice Has A Long Life During The
Transition to Richer, Carrier Grade VoIP
IMS VoIP: Rich Voice – Ubiquity vs. OTT VoIP
VoLTE Timing is Operator Specific
VoIP over HSPA+ Driven by VoLTE
Fallback to 2G/3G voice (CSFB) used by most LTE operators
while the VoLTE ecosystem is being developed and expanded
Proven Circuit Voice: High Quality, Reliable, Ubiquitous1
WCDMA+: Long life of HSPA+ means long life of WCDMA
1X Advanced Commercial (1H 2012)
4 1Thanks to soft handover, proven interoperability and 10+ years of 1X/WCDMA optimizations. OTT=Over-The-Top, voice just like any data service without Quality of Service

5. Qualcomm: Comprehensive Voice Evolution
Leadership
2012 2013 2014 2015+ 2020+
IMS VoIP: Evolving to a Richer Carrier Grade Voice Service
2G/3G
Provides Voice
VoLTE
Packet
Handover
VoIP over HSPA+ (EV-DO)
Seamless
Transitions CSFB1 SRVCC2
WCDMA WCDMA+
1X 1X Advanced
Circuit Switched Voice: Evolving To Support More Data
Blue: Qualcomm Technology Leadership
5 1CSFB: Circuit Switched Fallback. 2SRVCC: Single Radio Voice Call Continuity to enable handover to WCDMA/1X/GSM CS voice outside VoLTE coverage.

6. 2G/3G Provides LTE Voice Today
—And Future VoLTE Fallback
2G/3G Provides Voice VoLTE—IMS VoIP over LTE
CSFB1 to WCDMA, 1X or GSM Ccommercialization with SRVCC1
voice is commercial since 2011. starting in 2013, maturing in 2015
Today: Fallback to VoLTE: Fallback1 to 2G/3G,
2G/3G for all or handover to VoHSPA+,
voice calls outside LTE coverage
LTE (FDD or TDD)
2G/3G Voice & EV-DO/HSPA+ Data
Voice Continuity and Global Roaming
6 1SRVCC: Single Radio Voice Call Continuity. CSFB: Circuit Switched Fallback.

7. 2G/3G Voice Fallback (CSFB)
Commercial Since 2011 and Widely Deployed
SIMILAR CALL
~1s SET-UP TIME AS TODAY
~ 0.5 s (MOBILE ORIGINATED
OR TERMINATED CALL)
Baseline
WCDMA (R99)
Set-up time
Enhanced CSFB1 R9 CSFB2
(R8) (R9)
RELIABILITY ON PAR
LTE
(DATA ONLY)
WITH TODAY’S
LTE NETWORKS
Multimode
Single Radio
Device
WCDMA,
GSM,1X
1Redirection without reading the non-mandatory system information blocks ‘SIBs’, 1xCSFB for 1X is also redirection based in R8.
7 2System information provided directly in a LTE redirection message to speed up the transition, aka ‘SIB tunneling”. Enhanced R9 1xCSFB is Handover based

8. SRVCC Ensures Seamless Voice Continuity
2012 2013 2014 2015+
VoLTE on Mature
VoLTE w/
par with CS Interoperable
SRVCC
Voice Quality VoLTE
LTE
VoLTE Single Radio Voice Call Continuity (SRVCC) enables
handover to 2G/3G Voice Outside VoLTE coverage
2G/3G
VOICE
CIRCUIT
SWITCHED
LTE
Multimode Multimode devices ensure
Single Radio
Device
global roaming from day one
IMS VoLTE IMS can expand to support other
With VCC VoIP accesses (HSPA+, EV-DO etc.)
8 1SRVCC for VoLTE to 2G/3G circuit switched voice is defined in 3GPP Rel-9, with enhancements in Rel-10

9. World’s First SRVCC Handover by
Qualcomm and Ericsson (Feb 2012)
9

10. Different VoIP Models Will Co-Exist
OVER-THE-TOP VOIP
OPERATOR 3RD PARTY
PROVIDED (BEST EFFORT)
PROVIDED
SERVICE SERVICE Opportunity To Offer
Quality Of Service
IMS/RCS Operator to OTT VoIP Provider
3rd party
VoIP Client Client
Interoperable, ubiquitous May not interoperate with
rich voice solution1 other VoIP solutions
Variable Quality, Dependent
Carrier Grade Voice on Network Load
10 1IMS/RCS based VoIP is the industry solution for carrier grade voice, to enable a ubiquitous VoIP solutions .

11. VoLTE with VoHSPA+ Ensures Rich Voice
Everywhere
Integrated Presence
Enhanced contacts with presence
Integrated messaging, chat, synch. etc
Enriched Voice/Push to Share
Share multimedia content during call,
such as video, pictures, files etc.
Video Telephony
With full interoperability
Rich Services Initially VoLTE with VoHSPA+ Ensures
Limited to VoLTE Coverage Consistent and Seamless
Handover to WCDMA/GSM circuit switched
voice Through Single Radio-VCC Rich Voice Experience
11 Based on Rich Communication Suite (RCS), an industry effort leveraging IMS to providing mobile phone services.

12. VoLTE and HSPA+ VoIP Profiles Defined
Common User to Common Network Common User to
Network Interface to Network Interface Network Interface
User to IMS User to
Network IMS Network
(Operator A) (Operator B) Interfaces
Interfaces
GSMA VoLTE and VoIP over HSPA+:
• Defines common voice, sms service profiles, bearers etc.
• Defines minimum support level (IMS, LTE/HSPA+, EPC)
TO ENABLE INTEROPERABILITY, SCALE AND ROAMING
12 VoLTE: GSMA PRD IR.92 – “IMS Profile for Voice and SMS” completed in 2011, HSPA+ profile defined in IR.58 completed early 2012. Additional PRD on IMS roaming defined.

13. 13

14. 2 Billion HSPA/HSPA+ Subscribers in 2015
Will Be Using WCDMA voice
HSPA/HSPA+ relies on WCDMA for voice
Connections (Millions)
2,500 HSPA/HSPA+ MBB*
connections in 2015
2,000
HSPA Family
1,500
HSPA/HSPA+ MBB* EV-DO Family
connections in 2012
1,000 TD-SCDMA
LTE
500
WiMax
0
2010 2011 2012 2013 2014 2015
14
Source: HSPA, EV-DO ,TD-SCDMA and LTE subs – Wireless Intelligence (Oct ‘11) and WiMax - ABI (Aug ‘11)

15. WCDMA+: More Efficient Voice to Support
More Data
Triples Voice Spectral Efficiency to Free Up ~2/3 of a Carrier for Data
HSPA/ FREED-UP FOR
HSPA+
DOWNLINK DATA
Data (UP TO ~2/3 OF A 5 MHZ
WCDMA (DL) CARRIER FREED-UP)
Voice SAME VOICE
CAPACITY USING
A THIRD OF
RESOURCES
WCDMA+
Voice
ENHANCED CIRCUIT SWITCHED VOICE1
15 1Improvements such as overhead optimizations, early termination and new codec (EVS) 5.9kbps. Single receive antenna assumed. WCDMA+ enhancements targeted for 3GPP R12.

16. More Data Capacity at All Voice Loads
100% AVAILABLE DATA VS. VOICE
Data IN A 5MHz CARRIER
Downlink Data WCDMA+
(or VoIP over HSPA+1)
Capacity
(HSPA/HSPA+)
Support
more data
WCDMA
Voice
100% Voice
Voice Load
16 1For optimized VoIP over HSPA+ with features such as ROHC header compression, DTX, DRX and advanced receivers, over–the-top (OTT) VoIP less efficient than WCDMA voice

17. 1X Advanced Frees Up Spectrum for Data
1X Advanced
Up to
3x 4x
Voice users
CDMA2000 1X Voice users
1.5x
x Voice users
Single Mobile
Voice users Antenna Rx Diversity
EVRC EVRC-B BTS IC + Adv. QLIC
Single RX QLIC (device IC) Radio Link Enhancements
New device New device
Network upgrades New channel card
Same Voice Capacity in ~¼ of the Spectrum
Voice Voice Data
CDMA2000 1X 1X Adv EV-DO (or LTE)
17

18. 18

19. Qualcomm Enables The Best Voice
Experience
Voice/Audio Codecs
Standards Defined
Qualcomm’s Calliope
HDOnTM FluenceTM
Deliver HD-Voice quality over
legacy narrow band1
Noise suppression
Using multiple microphones
True
HD-Voice
Experience
VoIP Active Noise
Optimizations Cancelation
Such as time-warping
and de-jitter buffer
Tools and Optimization
Such as calibration and access to DSP.
HD-Voice Across 3G Voice, IMS VoIP or Over-The-Top VoIP
19 1Such as “HDOn-eAMR” which transmits true WB compressed voice quality over a NB channel. Qualcomm’s ‘Widevoice’ can also artificially create WB voice quality at the handset

20. Continuously Enhanced Codecs to Improve
Voice and Audio
Higher Quality, Higher Capacity, Better Music
WCDMA/HSPA+ EVS
AMR AMR
LTE
(NB) (WB) (NB, WB, SWB)
3GPP
CDMA2000 EVRC-B EVRC-WB EVRC-NW
3GPP2 (NB) (WB) (NB, WB)
‘HD-Voice’
Super Wideband
(Voice and Music)
Wideband
(Voice)
Narrowband
(Voice)
~7kHz 16kHz
Low frequencies increases High frequencies Reproduces better
naturalness, presence and improves voice clarity audio and music
comfort and intelligibility
20 Note: EVS has additional modes not shown that are optimized for music, stereo and even wider bandwidths.

21. Enhanced Voice Service (EVS) Codecs:
Better Quality, Capacity or Both
EVS SWB  Expected to be Commercial
(13.3k) in 2014
Higher Quality at
Similar Capacity
 Designed With VoIP in Mind and
targets VoLTE
Voice AMR WB EVS WB
(5.95k)  Qualcomm’s Calliope SWB
Quality (12.65k)
Codec Excellent for VoHSPA+
and Early VoLTE launch
 Opportunity to Support EVS
AMR Higher Capacity Across All Voice Networks for
(12.2k) at Similar Quality Seamless Quality(CS and VoIP)
Voice Capacity
21 Note: EVS has many additional modes not shown that are optimized for music, stereo and even wider bandwidths. Calliope: 12kbps SWB VoIP optimized codec

22. Summary: Evolving Voice for More Data,
Better Quality, Richer Experience
Qualcomm: Comprehensive Voice Evolution Leadership
 1X Advanced, WCDMA+, IMS VoIP over LTE, HSPA+, EV-DO, and seamless transitions
2G/3G Provides LTE Voice Today & Future VoLTE Fallback
 CSFB widely deployed, future VoLTE needs SRVCC to ensure seamless voice
VoLTE with VoHSPA+ Ensure Rich Voice Everywhere
 Ensures a seamless and consistent rich voice user experience
WCDMA+: More Efficient Voice to Support More Data
 Triples WCDMA circuit switched voice spectral efficiency
Qualcomm Enables The Best Voice Experience
 Leading Voice Quality Technologies for 3G circuit switched voice,
IMS VoIP and OTT VoIP (HDOn, Calliope Fluence..)
22

23. Questions? Connect with Us
www.qualcomm.com/technology
@Qualcomm_Tech
http://www.slideshare.net/
qualcommwirelessevolution
http://www.qualcomm.com/blog
/contributors/prakash-sangam
23