WCDMA+ is a new technology proposed to the WCDMA/HSPA+ community that improves data capacity by making voice more efficient; it triples the spectral efficiency of WCDMA circuit switched voice to free up to 2/3rds of a full 5MHz carrier for downlink HSPA/HSPA+ data. Given that 2 Billion HSPA/HSPA+ subscribers will be using WCDMA voice in 2015, the case for enhancing WCDMA together with the HSPA+ evolution is obvious. WCDMA+ addresses the critical need to utilize finite spectrum assets more efficiently and at the same time be able to cost-effectively address all device segments. For more information please visit www.qualcomm.com/wcdma Download the presentation here: http://www.qualcomm.com/media/documents/wcdma-more-efficient-voice-more-data-services

1. WCDMA+ Makes Voice
More Efficient to
Support More Data
Enhancing proven WCDMA
February 2013

2. HSPA+ Continues To Evolve
2013 2014 2015 2016+
Dual-Carrier
Higher Order 10 MHz Up to 4x/20MHz MultiFlow HSPA+ HetNets&UL Enh.
Across Bands WCDMA+, S-UMTS
Modulation & MIMO Dual-Carrier Multi-Carrier 8x Multi-Carrier
Uplink Dual-Carrier
Rel-7 Rel-8 Rel-9 Rel-10 Rel-11 Rel-12 & Beyond
HSPA HSPA+ HSPA+ HSPA+ Advanced
DL: 14.4 Mbps DL: 28 Mbps DL: 42 Mbps1 DL: 84 -168 Mbps2 DL: 336+ Mbps4
UL: 5.7 Mbps UL: 11 Mbps UL: 11 Mbps UL: 23 Mbps2 UL: 69+ Mbps4
Rel-12
WCDMA WCDMA+
Frees up resources
High Quality, Reliable, Ubiquitous Voice
for HSPA+ data
1R8 reaches 42 Mbps by combining 2x2 MIMO and HOM (64QAM) in 5 MHz, or by utilizing
HOM (64QAM) and multicarrier in 10 MHz.
2R9 combines multicarrier and MIMO in 10 MHz to reach 84 Mbps. Uplink multicarrier
doubles uplink peak data rate to 23 Mbps in 10 MHz.
3R10 expands multicarrier to 20 MHz to reach up to168 Mbps with 2x2 MIMO.
4R11 expands multicarrier up to 40 MHz to reach 336 Mbps with 2x2 MIMO, or 20Mhz with
4x4 MIMO. Uplink 2x2 MIMO with 64QAM reaches 69Mbps.
Commercial
Note: Estimated commercial dates. Created 2/13/2013

3. Continued Migration from GSM Voice to WCDMA Voice
UMTS900 Well Established for HSPA+ Data and WCDMA Voice
Commercial Networks
…UMTS900 is standard in most new devices
destined for Europe, the Middle East, Africa, and
Devices Announced Asia Pacific markets, with the 900/2100 MHz
combination for WCDMA-HSPA increasingly
commonplace…
Countries Allow Refarming1
- GSA
1Some countries may not need regulatory approval; Source: www.gsacom.com as of Nov 20, 2012.

4. WCDMA Has a Long Life Thanks to the Success of HSPA+
1980 1990 2000 2010 2020 2030
Launch of Mobile Technology
~20 years
Peak device volume1
~20 years
‘3G/4G’ HSPA/HSPA+
3G - WCDMA
~20 years
Future Extrapolation
2G - GSM
~20 years
1G - AMPS
~20 years
~20 years from launch of a new mobile technology generation to
peak device volume
1Sources:
4
ABI June 2011 and Strategy Analytics Sept 2011, devices is only handset. A multimode device is counted only as the latest technology, e.g. a GSM/HSPA+/LTE device is counted as LTE.

5. Billions of WCDMA Users for the Foreseeable Future
HSPA/HSPA+ relies on WCDMA for voice
~2.5B
HSPA/HSPA+
MBB* connections
Connections (Millions) end of 2016
3,000
2,500
1B
HSPA/HSPA+
MBB* connections
2,000 HSPA Family
reached in 2012
1,500 EV-DO Family
1,000
TD-SCDMA
500
LTE
0
2011 2012 2013 2014 2015 2016
5
Source: HSPA, EV-DO ,TD-SCDMA and LTE subs – Wireless Intelligence (Jan ‘13) . 2,437 Billion HSPA family connections expected Q4 2016

6. WCDMA+ Triples Voice Efficiency to Support More Data
WCDMA+
Frees Up ~2/3 of a Carrier for HSPA+ Data
Extended Talk-Time: ~20% Reduced Current Consumption1
Ensures High Quality, Reliable, Ubiquitous Voice
Cost-Effectively Addresses All Device Segments
6
1Reduction in modem current consumption during an circuit switched WCDMA+ call compared to a WCDMA call

7. WCDMA+ Can Free Up ~2/3 of a Carrier for Data
Triples Voice Spectral Efficiency
WCDMA WCDMA+
(5MHz Carrier) (5MHz Carrier)
HSPA/ FREED-UP
HSPA+
FOR DATA
Data (UP TO ~2/3 OF A 5 MHZ
WCDMA (UL/DL) CARRIER FREED-UP)
Voice1
SAME VOICE
CAPACITY USING
A THIRD OF WCDMA+
RESOURCES
Voice
ENHANCED CIRCUIT SWITCHED VOICE2
1There is ~10% DL data capacity available at max voice capacity not shown in the graph for WCDMA .Assumptions: single receive antenna and rake receiver assumed for voice, dual receive diversity assumed for data.
2WCDMA+ 7
is a 3GPP R12 candidate which proposes 1) radio link enhancements and 2) EVS 5.9kbps Source Controlled Variable Bit Rate (EVS-VBR) Wideband mode instead of AMR 12.2k vocoder

8. More Data Capacity at All Voice Loads
100%
Data
1.4x more
data AVAILABLE DATA VS. VOICE IN
6x more A 5MHz CARRIER
data
DOWNLINK DATA
CAPACITY
(HSPA/HSPA+)
0 users 25 users 48 users VOICE LOAD
8
Assumptions: Single receive antenna and rake receiver assumed for voice, dual receive diversity assumed for data. This example shows the downlink capacity gain,

9. WCDMA+ Ensures High Quality, Reliable, Ubiquitous Voice
Builds on Proven
WCDMA Voice1
Extended Talk-Time2
~20% reduced modem Global Roaming
current consumption in Global Bands
Simultaneous Voice Leverages Existing
and HSPA+ Data Investments
Proven Robustness
with Soft-Handover
1High 9
quality thanks to soft handover, proven interoperability and 10+ years of WCDMA circuit switched voice optimizations. 2Current modem consumption reduced by ~20% with WCDMA+ compared to WCDMA

10. WDCMA+ Cost-Effectively Addresses All Device Segments
From Feature Phones, Low-end Smartphones to High-End Smartphones
Basic features—e.g. single receive antenna and no HSPA+ Latest HSPA+ features, dual receive diversity and latest advanced
required—ensures cost-effective entry/low-end devices receivers provide best performance for higher end devices

11. WCDMA+ is Being Standardized
For improved data capacity and ~20% reduced current consumption
~ 40% FREED-UP ~2/3 FREED-UP
FOR DATA FOR DATA
HSPA/
HSPA+ HSPA/
Data HSPA+
(DL) Data
(DL)
Voice1
Same
Voice
Same
Capacity
Voice
Capacity
WCDMA RADIO LINK ENHANCED VOICE
ENHANCEMENTS2 CODEC (EVS-VBR)3
R99
WCDMA+ 3GPP R12 Candidate
Assumptions: single receive antenna and rake receiver for voice, dual receive diversity for data, shows downlink gain, uplink gain slightly different. 1There is also a ~10% DL data capacity available at max voice capacity not shown in the graph for WCDMA. 2 11
Radio link enhancements such as reduced downlink overhead and early voice frame termination. 3EVS 5.9kbps Source Controlled Variable Bit Rate (VBR) Wideband mode instead of AMR 12.2k vocoder Wideband mode.

12. Continuously Enhanced Codecs
Higher Quality, Higher Capacity, Better Music
AMR AMR EVS
(NB) (WB) (NB, WB, SWB)
‘HD-Voice’
Super Wideband
(Voice and Music)
Wideband
(Voice)
Narrowband
(Voice)
8kHz 16kHz
Low frequencies increases naturalness, High frequencies improves voice Reproduces better
presence and comfort clarity and intelligibility audio and music
Note: EVS has additional modes not shown that are optimized for music, stereo and even wider bandwidths.

13. Enhanced Voice Service (EVS): Better Quality, Capacity or Both
 Designed with VoIP in mind and targets
Higher VoLTE. Expected to be Commercial in
EVS SWB Capacity at
(13.3k) Similar Quality 2014
 EVS-VBR for WCDMA+: 5.95kbps
Voice AMR WB EVS-VBR WB Wideband Source Controlled Variable
Quality (12.65k) (5.95k)
Bitrate Codec
Higher
AMR Capacity at
 Opportunity to Support EVS across all
(12.2k) Higher Quality voice networks for seamless quality (CS
and VoIP)
Voice Capacity
Note: EVS has many additional modes not shown that are optimized for music, stereo and even wider bandwidths.

14. 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 with SRVCC ecosystem is being developed and expanded
Proven Circuit Voice: High Quality, Reliable, Ubiquitous1
WCDMA+: Long life of HSPA+ means long life of WCDMA
2020+
1Thanks
14
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

15. Summary: Triples Voice Efficiency to Support More Data
WCDMA+
Frees Up ~2/3 of a Carrier for HSPA+ Data
Extended Talk-Time: ~20% Reduced Current Consumption1
Ensures High Quality, Reliable, Ubiquitous Voice
Cost-Effectively Addresses All Device Segments
15
1Reduction in modem current consumption during an circuit switched WCDMA+ call compared to a WCDMA call

16. Questions? Connect with Us
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http://www.qualcomm.com/blog/contributors/prakash-sangam
@qualcomm_tech
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