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VoLTE Production Deployment
Next Generation Services- RCS, VoLTE and Beyond
VoLTE Production Deployment Case StudyNext Generation Services RCS, VoLTE and BeyondETSI / GSMA / MSF Operator Workshop
Allan Johnson
October 11, 2012
Allan JohnsonGeneral Manager, HelloSoft V.VoIPImagination Technologies
VoLTE Implementation case studyOutline
1. Introduction to Imagination
2. VoLTE Market drivers
3. High Level Objectives
4 VoLTE Handset Requirements4. VoLTE Handset Requirements
5. Application Processor based VoLTE vs. Modem based VoLTE
6 P d ti Si ff M lti d d d6. Production Signoff – Multi-vendor dependence
7. 3 Greatest Challenges
8. 3 Most Important Lessons Learned
9. Conclusion
Confidential – Subject to NDAV01.11 nov07 © 2011 Imagination Technologies Ltd.2
Company overview
Leading Silicon, IP Clients & Cloud IP supplierGraphics/video/comms, VoLTE/Video/RCS, CloudPlayed significant role in creating Smartphone SegmentPlayed significant role in creating Smartphone Segment by offering industry leading multimedia technologiesPlayed leading role in world’s first commercial VoLTEdeployment
SoftwareClientsCloud
GraphicsGPU
Compute Video
Display
Co s
deployment Shipped by most major consumer brands
Smartphones, tablets, TVs/STBs, games consolesRadios connected audio & video devices HelloSoft Division
mm Processor Enabling
Systems
Radios, connected audio & video devicesAutomotive dashboards, navigation, communication
Established technology powerhouseFounded 1985; London FTSE250 (IMG L)
HelloSoft DivisionIP Clients and StacksDifferentiated TechnologyExtensive PatentsIndustry’s Largest IP SW
Development TeamFounded 1985; London FTSE250 (IMG.L)Employees: 1,200+, World Class TeamUK HQ; operations world-wideGlobal customer baseGlobal customer base
Total Revenues2008-2009 YR: $104.11m/£64.1m2009-2010 YR: $131 40m/£80 9m
Confidential – Subject to NDAV01.11 nov07
2009 2010 YR: $131.40m/£80.9m2010-2011 YR: $159.17m/£98.0m2011-2012 YR: $207.08m/£127.5m
Market Opportunity & ChallengeNeed for single integrated clients to address multiplatform challenge
Confidential – Subject to NDAV01.11 nov07
Solution: Multi-Platform / Multi-OSVoIP/VoLTE/RCS Stack with HW-Accelerated Video
Hardware Accelerators –
Applications
Accelerators Video
Optimized Media Engine
Voice Codecs
Optimized Media Engine
Voice Codecs ppProcessor
Modem –
AECAJB/PLCVAD/CNG
AECAJB/PLCVAD/CNG
Modem 3G/LTE/WiFi
VoLTESIP
RTP/RTCPRCS/IMSRCS/IMS
VCC/IP2IP
Confidential – Subject to NDAV01.11 nov07
ProductsV.VoIP, VoLTE, VCC, IMS and RCS
• Comprehensive, multiplatform mobile device solutions for delivering the multi-party real-time voice and video communications
• Supported on fixed Wi Fi and GSM/CDMA/2G/3G/LTE wireless accessHelloSoft Mobile
V VoIP SDK • Supported on fixed, Wi-Fi and GSM/CDMA/2G/3G/LTE wireless access networks
V.VoIP SDK
• Fully standards compliant with 3GPP Voice over LTE and IR-92 specsIncorporates award winning multiplatform HelloSoft VoIP IMS VCCHelloSoft VoLTE • Incorporates award winning multiplatform HelloSoft VoIP, IMS, VCC technology featuring AEC (Acoustic Echo Cancellation) and NC (Noise Cancellation)
HelloSoft VoLTE& VCC
• Complies with 3GPP IMS 3GPP2 IMS 3GPP & IETF compliant SIP &• Complies with 3GPP IMS, 3GPP2 IMS, 3GPP & IETF compliant SIP & SIMPLE
• Supports Instant Messaging (IM), Presence-enabled active phonebook, video share and seamless handoff between VoIP and cellular phone calls
HelloSoft IMS Stack
• Supports SRVCC (Single Radio VCC) per VoLTE requirements, DRVCC (Dual Radio VCC) for seamless handoff between circuit-switched and packet-switched networks
• Supports IP2IP for seamless handoff between IP networks
HelloSoft Handoff Technology
pp
• Supports advanced features such as enriched audio and video calling, enhanced address book/contacts, video share, and image/file transfer.
• SMS/MMS over MSRP Group Chat and Social Profile Information
HelloSoft Rich Communication
S it (RCS)
Confidential – Subject to NDAV01.11 nov07
• SMS/MMS over MSRP. Group Chat, and Social Profile InformationSuite (RCS)
VoLTE Production Deployment Case StudyOverall High Level Objectives
1. First VoLTE production network deployment in the world2. Initial deployment is VoLTE, followed by RCS3. Uses a 3rd party VoLTE client
- other options such as SemiCo based VoLTE not ready or mature enough4. Ensure VoLTE device solution can readily scale across devicesy5. Ensure outstanding voice quality and user experience
( “better than circuit switched voice” )
Confidential – Subject to NDAV01.11 nov07 © 2011 Imagination Technologies Ltd.7
VoLTE Production Deployment Case StudyVoLTE Market Drivers
1. Deployment efficienciesa) Higher spectral efficiency than Circuit Switched Cellularb) Ability to re-farm spectrum blocks) y pc) Ability to deploy full IMS solution
2. Major new service capabilitiesa) Ability to seamlessly move between IP bearersa) Ability to seamlessly move between IP bearersb) Ability to seamlessly move between devices
3. Major new device capabilitiesa) Ability to migrate to LTE only handsetsa) Ability to migrate to LTE only handsetsb) Ability to perform simultaneous voice/datac) Ability to seamlessly migrate users from existing user experience
( e.g. seamless integration of VoLTE into existing handset or tablet UI)
4. Ability to launch new / enhanced services and capabilitiesa) HD Voiceb) Video share/chat)c) RCS 5.0 ( enhanced contact list, enhanced messaging, capability exchange, video
share/chat, VoLTE, …)d) Many other new capabilities
Confidential – Subject to NDAV01.11 nov07 © 2011 Imagination Technologies Ltd.8
Case Study BackgroundVoLTE Handset Requirements
1. VoLTE Compliant with IR-92 with Dedicated Bearer support2. Fully integrated with native UI (dialer, call history, call logs, etc)3 VoLTE must be transparent to the end user i e Whether the user is on3. VoLTE must be transparent to the end user. i.e. Whether the user is on
Circuit-switched network or on VoLTE network, the user experience must be same ( other than voice quality and the “4G” icon on the UI)
4 “Better than CS” voice quality in the coverage area4. Better than CS voice quality in the coverage area5. Network selection of VoLTE where available, else circuit switched voice calls6. CS Fall-back for Emergency Calls only7. Support for multiple LTE chipsets & multiple application processor chip sets8. Support for phones from multiple OEMs9 “f9. VoLTE vendor must be “full service” … and complete handset integration,
functional testing, QA, IOT, Lab Trials, Performance Testing including drive tests on production network in coverage area, and Production Launch
10 U d bl t t10.Upgradable to supporta) VCC handoff to Circuit-Switched calls & vice versab) Upgradable to RCS 5.0) O th i d t
Confidential – Subject to NDAV01.11 nov07
c) Over-the-air updates
© 2011 Imagination Technologies Ltd.9
Case Study BackgroundApplication Processor based VoLTE vs. Modem based VoLTE
Mobile device
Application Processor based VoLTE
V LTE & Mobile device
Modem based VoLTE
LTE ModemApplication
VoLTE & IMS/RCS stacks& applications
LTE Modem
VoLTEApplication
IMS/RCS stacks& applications
Processor
ADVANTAGES:• More familiar model since this is the legacy
ADVANTAGES:• Allows for a single IMS stack on the application
Processor
• More familiar model since this is the legacy partitioning used for circuit switched voice
• LTE modem vendors such as Qualcomm & others may offer this approach
• Claims to be lower power in some cases (e.g. if you ld ff h li i d i
Allows for a single IMS stack on the application processor
• VoLTE can be easily integrated into other applications.• Provides better audio/video integration because the
video subsystem is on the application processor could power off the application processor during a voice call) but in other cases it is not
DISADVANTAGES:• Dual IMS stack – one stack on the modem for
video subsystem is on the application processor• Lower power in some cases• More power efficient and better architecture for
supporting multiple IP bearerse g for VoLTE to VoWiFi seamless handoff
VoLTE and one on the AP for everything else• Voice-video synchronization must span both
modem and AP processors• Handoff to multiple IP bearers such as WiFi are
difficult and inefficient
e.g. for VoLTE to VoWiFi seamless handoff
DISADVANTAGES:• Cannot power off the application processor during
voice calls ( although in practice, generally the AP is
Confidential – Subject to NDAV01.11 nov07
difficult and inefficient• Less flexible and voice feature upgrades tied to the
modem
voice calls ( although in practice, generally the AP is not powered off)
Decision was made to go with Application Processor based VoLTE© 2011 Imagination Technologies Ltd.
Case Study BackgroundProduction signoff – Multi-vendor IOT
Infrastructure Component
Number of IOTTest cases
dependent on thatComponent dependent on that vendor for testing
RAN 5%
TAS 5%
S/I-CSCF 4%
MGCF/MGW 3%
HSS 12%HSS 12%
SBC / P-CSCF 14%
HLR 6%
Dependencies on 7 infrastructure vendors forh d t IODT/IOT t t
HLR 6%
Confidential – Subject to NDAV01.11 nov07 © 2011 Imagination Technologies Ltd.11
handset IODT/IOT test cases
Case Study BackgroundProduction Signoff - Voice Quality Drive Testing
VQT EquipmentVQT Analyzer
“Wired IP Phone
HS VoLTE Client #2“Gold” CS Phone
HS VoLTE Client #1
Confidential – Subject to NDAV01.11 nov07 © 2011 Imagination Technologies Ltd.12
Voice Quality comparison is done by simultaneously measuring voice quality on 4 channels while driving with handsets side-by-side
Case Study BackgroundVoLTE Voice Quality Drive Testing
Reference: “Good grades for VoLTE – Validating VoLTE end-end”, Ericsson Review, 1/2012, Michel Anehill et al,Ericsson Review, 1/2012, Michel Anehill et al,
Voice Quality depends on codec, bit rate, frame error ratell l ith h k t l l t
Confidential – Subject to NDAV01.11 nov07 © 2011 Imagination Technologies Ltd.13
as well as algorithms such as packet loss concealment
3 Greatest ChallengesMulti-party IOT
HSS TAS MGW P-CSCF SBCPCRFS/I-
CSCF
Infra-Infrastructure
OEMVoLTERCS
ProviderIntegra- tionIntegra- tion
hips
et
IOT
hips
et
IOT
Provider
AP+LTEC
hC
h14 AP+LTE
Chipset+
Drivers
Confidential – Subject to NDAV01.11 nov07 © 2011 Imagination Technologies Ltd.
Significant investment / schedule time in the Multi-party IOT
3 Greatest ChallengesChallenge #2 – getting “the right” carrier stewardship model
2) HYBRID #1- Carrier responsible for vendor
selection/Business terms- Carrier effectively sublicenses to
OEM
3) HYBRID #2- Carrier responsible for vendor selection- OEM’s responsible everything else
1) CARRIER CENTRIC- Carrier vendor selection/business
4) OEM CENTRIC- Carrier sends requirements to OEM’s- OEM responsible for vendor selection/business terms/integration
OEMs
- Carrier vendor selection/business terms/integration
- Carrier mandates client to OEM- Carrier “supervises” integration/execution
selection/business terms/integration- OEM drives execution including IOT
5) SemiCo CENTRIC5) SemiCo CENTRIC- Carrier sends requirements doc
to OEM’s- OEM’s send requirements to
SemiCo’sS iC IODT’ f d i- SemiCo IODT’s reference design
- OEM completes IOT with device
Initially, carrier must drive and have high control “carrier centric” model
Confidential – Subject to NDAV01.11 nov07 © 2011 Imagination Technologies Ltd.15
y gAs the ecosystem matures and scales, a shift to the “device centric” model occurs
3 Greatest Challenges#3 – getting the 1st VoLTE handset across the finish line “on time”
API’s Tested
IntegrationCompleteKickoff
IODTComplete
(Lab)Production IOT+ Drive Tests.
TotalTime
5
9
Target 1 month1 month 2 months2 months 1 month1 month 1 month1 month
ActualFirst 1 mon1 mon1 month1 month 2 months2 months 1 month1 month 1 month1 month1+ mon1+ mon 1+ mon1+ mon
5 mon
9monFirst
Handset1 mon1 month 2 months 1 month 1 month1+ mon 1+ mon
AdditionalHandset 1 month1 month 2 months2 months 1 month1 month 1 month1 month1 mon1 mon 6Handset
OEM1 month 2 months 1 month 1 month1 mon
AdditionalHandset
S OEM1 month1 month 1 mon1 mon 1 month1 month 1 month1 month
mon
4monSame OEM mon
NOTES:NOTES:NOTES:1. First handset incurred additional time in IODT (Lab) / IOT ( production )
Much of this time was due to multi-vendor infrastructure dependencies2 H i th 3rd t V LTE l ti ll l bilit i k d ti d
Confidential – Subject to NDAV01.11 nov07
2. Having the 3rd party VoLTE solution allows scalability, risk reduction, and cost savings and time to market advantage across many devices
© 2011 Imagination Technologies Ltd.
3 Most Important Lessons LearnedLesson #1 – get “full service” support for 1st wave of devices
Ensure the right on-site/multi-site / multiparty support, test environment and support through the life cycle
OEMUSA
StackUSA
Carrier Production
Network
CarrierLab
Network
OEM ODMAsia
OEMAsia
StackAsia
17
Have a well developed and sophisticated
Confidential – Subject to NDAV01.11 nov0717
p pmulti-site integrated Project Management process
© 2011 Imagination Technologies Ltd.
3 Most Important Lessons LearnedLesson #2 – evaluate the performance of client solutions carefully
Imagination DL Competition DL Imagination DL Competition DLAverage 3.42 2.42 3.42 2.38Standard Deviation 0.29 0.23 0.26 0.16Maximum Score 3 65 2 71 3 64 2 61
Downlink MOS Uplink MOS
Maximum Score 3.65 2.71 3.64 2.61Count 58 58 59 59% MOS greater than or equal to 3.2 87.93% 0.00% 83.05% 0.00%% MOS less than 3.0 5.17% 100.00% 5.08% 100.00%% MOS less than 2.0 1.72% 5.17% 0.00% 1.69%% MOS l h l 1 8% MOS less than or equal to 1.8 0.00% 1.72% 0.00% 1.69%Scoring Algorithm PESQ PESQ PESQ PESQ
Voice Quality during Drive Testing
2 5
3.0
3.5
4.0
Score
Handset #1
1.0
1.5
2.0
2.5
PESQ
( MOS ) S
Handset #2
Handset #3 (notI i ti l ti )
0.0
0.5
DL Avg DL MAX UL Avg UL MAX
Imagination solution)
Confidential – Subject to NDAV01.11 nov0718
Large difference in performance observed between VoLTE solutions
© 2011 Imagination Technologies Ltd.
3 Most Important Lessons Learned#3 – VoLTE is not coming, its here now & much better quality than CS
CS Call Downlink VoLTE Downlink CS Call Uplink VoLTE UplinkAverage 2.39 3.85 2.35 3.84Standard Deviation 0.28 0.30 0.31 0.30Maximum Score 2 91 4 06 2 94 4 06
Downlink MOS Uplink MOS
Maximum Score 2.91 4.06 2.94 4.06Count 141 165 143 165% MOS greater than or equal to 3.2 0.00% 95.15% 0.00% 95.15%% MOS less than 3.0 100.00% 3.64% 100.00% 2.42%% MOS less than 2.0 11.35% 0.00% 12.59% 0.61%% MOS less than or equal to 1.8 3.55% 0.00% 4.90% 0.61%Scoring Algorithm PESQ PESQ PESQ PESQ
Voice Quality forVoLTE vs. Circuit Switched
3.03.54.04.5
Score
VoLTE vs. Circuit Switched
0.51.01.52.02.5
PESQ
(MOS)
VoLTE Handset
Circuit Switched Handset
0.0DL Avg DL MAX UL Avg UL MAX
Confidential – Subject to NDAV01.11 nov0719 © 2011 Imagination Technologies Ltd.
VoLTE voice quality significantly exceeds that of circuit switched
Conclusions
1. VoLTE is giving much better voice quality than circuit switched calls2. Significant differences in voice quality performance between VoLTE solutions3. IOT is multi-vendor and of course the maturity cycle in multi-vendor IOT is in
the early stages.4. Once a VoLTE protocol stack is through production on one handset, it can be
readily scaled across many handsets5. Project start ( for VoLTE integration) to production shipment can be achieved
in 9 months, for the first handsets, with a target of 4 months for subsequent “waves” of handsets, including IOT
6. “Full service” support from vendors is critical for first wave of handsets. Once the first “wave” of handsets is through, additional handsets can be brought out quite quickly
7. Modem based VoLTE vs. Application Processor based VoLTEModem based has the advantage of a familiar approach to CS… but …Application Processor based VoLTE provides more flexibility for integration with future “rich media” applications
8 V LTE i t j t i l b t i l
Confidential – Subject to NDAV01.11 nov07
8. VoLTE is not just in lab trials … production handsets are here now and VoLTE works very well, thank you !
20 © 2011 Imagination Technologies Ltd.
VoLTE is here nowand
works much better than circuit switchedworks much better than circuit switched
Thank you
October 11 2012October 11, 2012