1. VoLGA (Voice over LTE via Generic Access)
Bringing Voice and SMS to LTE
Steve Shaw
VP Marketing
Kineto Wireless

2. The Voice over LTE Problem
LTE Objectives:
Maximize return on LTE investment
Lower cost structure for all mobile services
Migrate mainstream voice subscribers to LTE
Problem:
Voice (and SMS) was not built-in to LTE
Telephony is an overlay (IMS, VoLGA, …)
IMS Telephony outside planning timeline
Work still required to match existing voice svcs
Solution:
Bring primary revenue services to LTE
Counter over-the-top VoIP competition
PSTN is the largest comms network ever created
>4 billion active mobile connections at end-2008; >6 billion by 2014
By 2014, 77% of revenue globally is voice & SMS (vs. 86% in 2009)

3. Mobile Network Evolution
1990s
2000s
2010s
GSM
3G/HSPA
RAN
LTE
Telephony Core network remains as long as there is a GSM or 3G RAN
Voice over
LTE GAP
IMS Telephony?
VOICE CORE
Telephony
Options:
1. VoLGA
2. CS Fallback

4. Mobile Operator Options
Pre-IMS Voice Options:
VoLGA
Voice over LTE via Generic Access
Packetize existing Voice and SMS services and deliver over LTE
CS Fallback
Instruct handsets to ‘fallback’ to a 3G or 2G network whenever voice service are required
Tel
SMS
VMS 1
Circuit Services
Packet Services
VANC
MSC 1
GERAN
UTRAN
LTE
BSC
RNC
EPC 2 2

5. CS Fallback… Falls short
Tel
SMS
VMS
Poor user experience
Minimum 30% increase in post-dial delays
Increased potential for call/network drops
Costly and complex
Must upgrade MSC network
Increased signaling due to network switching
A ‘stop-gap’ solution
A step away from IMS
No RCS, required MSC upgrades, …
No support for LTE femtocells
Circuit Services
Packet Services
MSC
GERAN
UTRAN
LTE
BSC
RNC
EPC 1
Not actually voice over LTE

6. VoLGA Delivers Voice over LTE
Tel
SMS
VMS
Excellent user experience
Same or faster call setup times
Full support of all voice features
E911, pre-paid,…
Minimal cost/complexity
“Doesn’t touch MSC”
External controller available from variety of TEMs
A better path to IMS
Supports combinational voice/ IMS data today
Uses RFC 4867 and RoHC for voice transport
As planned for IMS telephony
Supports LTE femtocells
Voice delivered natively via LTE
Circuit Services
Packet Services
VANC
MSC
GERAN
UTRAN
LTE
BSC
RNC
EPC

7. SMS Required for First LTE Deployments
Subscriber
Setup
Notifications
Dongle
Configurations
Data
Plan Setup
Roaming
Support for SMS over LTE is required at initial launch
SMS is not intrinsic part of LTE
SMS is essential for subscriber management
Dongles, netbooks, datacards,…
SMS needed for roaming
EU roaming regulations
VoLGA overcomes SMS over LTE roadblocks
In time for initial deployments
Regulatory
Warnings
Subscriber
Regulator
Notification
OTA
OTC Svs
Bill Shock
Warning
PLMN
Selection
Roaming
Tariff
Notification
Premium
Stop
Service
Cell ID
Interrogation
SM-SC
Data-only LTE/3G Devices
VoLGA is Visited Network Independent

8. Validation of SMS over LTE Requirement Dismissal of CSFB as solution
Submissions to 3GPP SA2 on June 1, 2009
Co-signed by Vodafone, China Mobile, ALU, Huawei, Starent, ZTE.
Rules out CS Fallback and IMS as valid options for SMS over LTE
Proposes alternative solution to SMS over LTE
Still requires visited network support
VoLGA Forum investigating (

9. Voice over LTE via Generic Access
Autor / Thema der Präsentation 9
Voice over LTE via Generic Access

10. VoLGA Momentum Stage 2 specifications published
Autor / Thema der Präsentation 10
Stage 2 specifications published
T-Mobile/VoLGA Forum webinar
Added 8 new members
Genband, HTC, Mavenir, Sonus, Starent, Tecore, Ulticom, WiChorus
Considerable news coverage
Forum launched March 31, 2009

11. Path to Standardization
2008
2009
T-Mobile and Kineto complete initial feasibility study
Companies initiate promotion and standardization efforts
VoLGA Development Agreement Released
1st Output
Stage 1 Completed March
2nd Output
Stage 2 Complete in June
3rd Output
Stage 3 completed by Sep 2009
Introduced into 3GPP CSoEPS
TR study item
Agreed as preferred way forward in CSoEPS TR summary
Next Step
Introduce to 3GPP 11

12. Four things to know about VoLGA
VoLGA delivers SMS over LTE
SMS over LTE is critical for early data-only deployments
Key requirement for LTE dongles, datacards and netbooks
For devices, VoLGA is the lowest impact design
VoLGA packetizes and transports existing messages
CS Fallback requires modification to GSM/3G protocol stacks, new interfaces
IMS Telephony is a totally new call control system
VoLGA is very efficient
Uses RFC 4867 and RoHC (just like IMS)
VoLGA does not tunnel user traffic
VoLGA is a better path to IMS than CSFB
Avoid MSC upgrades for CSFB
Deploy IMS-based RCS (Rich Communications Suite) combinational voice/data services
Start IMS evolution today 12

13. About Kineto Wireless
Focus: Enabling mobile operators to embrace broadband access
FMC: Dual-mode handsets, femtocells, terminal adaptors, soft mobiles
Voice over LTE: Extending mobile voice and SMS services over LTE
Key innovator behind key industry standards
3GPP UMA/GAN
3GPP HNB (Femtocell)
3GPP CSoEPS (VoLGA)
Leading provider of FMC and Voice over LTE technology to major wireless infrastructure and devices suppliers