1. 3G-324M over TD-SCDMA for Handsets
Ming Ho
Sales Director

2. Agenda 3G-324M in a nutshell Challenges in developing 3G handsets
Solutions and implications
Fast Call Setup
Interoperability
Handset Integration Aspects
Completeness and Future Safety

3. 3G-324M in a Nutshell

4. Purpose Mobile Video Telephony over Circuit Switched Networks Products
TD-SCDMA
UMTS
CDMA2000
Products
Terminals
Gateways
Applications

5. The Scope of 3G-324M in 3GPP Standards
Scope of 3G TS (3G-324M)
Video
System
Video Codec
H.263, MPEG-4,
H.264
H.223
Multiplex/
Demultiplex
Annexes
A, B, [C, D]
Audio
System
Audio Codec
AMR, G.723.1,
AMR-WB
Data App
T.120, etc.
Data Protocol
V.14, LAPM, …
WCDMA / TD-SCDMA
System
Control
Call Control
H.245
CCSRL
NSRP,
WNSRP
Scope TS , , and
Call Setup

6. 3G-324M Basics: Call Negotiation
H.263, MPEG-4,
Video Codec
H.264
AMR, G.723.1,
Audio Codec
AMR-WB
V.14, LAPM, …
Data Protocol
Call Control
H.245
CCSRL
WNSRP
NSRP,
H.223
Demultiplex
Multiplex/
A, B, [C, D]
Annexes
System
Video
Audio
T.120, etc.
Data App
Control
Call Setup
Modem Interface/Air Interface
3G-324M Basics: Call Negotiation
Capability exchange and master/slave determination
Decide on codec's according to capabilities and open logical channels for media
Acknowledge incoming channel opening
Decide on multiplexing table to use and notify the other terminal
Start sending media
TCS+MSD
TCS Ack+MSD Ack
OLC+OLC
OLC Acks
MES Ack
MES

7. 3G-324M Basics: Media Systems
H.263, MPEG-4,
Video Codec
H.264
AMR, G.723.1,
Audio Codec
AMR-WB
V.14, LAPM, …
Data Protocol
Call Control
H.245
CCSRL
WNSRP
NSRP,
H.223
Demultiplex
Multiplex/
A, B, [C, D]
Annexes
System
Video
Audio
T.120, etc.
Data App
Control
Call Setup
Modem Interface/Air Interface
3G-324M Basics: Media Systems
Raw media
AMR Encoder
MPEG-4 Encoder
MPEG-4 frames
AMR frame every 20 ms
H.223 Adaptation Layer Framing
Place framed AL-PDUs in
Multiplexer internal queues
Decide on best multiplexing
H.223 Multiplexer
Generates MUX-PDUs & Stuffing
MUX-PDU
H.223 bit stream

8. Agenda 3G-324M in a nutshell Challenges in developing 3G handsets
Solutions and implications
Fast Call Setup
Interoperability
Handset Integration Aspects
Completeness and Future Safety

9. Challenges in developing 3G handsets
Interoperability Assurance
Time to Market
Platform and OS Integration
User Experience
Maturity
Differentiation
Complete and Future Proof Solution

10. Agenda 3G-324M in a nutshell Challenges in developing 3G handsets
Solutions and implications
Fast Call Setup
Interoperability
Handset Integration Aspects
Completeness and Future Safety

11. Fast Call Setup
Standardization Efforts
WNSRP
Behind the Scenes

12. Agenda 3G-324M in a nutshell Challenges in developing 3G handsets
Solutions and implications
Fast Call Setup
Interoperability
Handset Integration Aspects
Completeness and Future Safety

13. 1. Standardization bodies
3G-324M standardization is complex
RADVISION is active in both standardization bodies and in all relevant working groups

14. 2. WNSRP
H.223
Bit stream multiplexer
NSRP / WNSRP
Retransmission Protocol
CCSRL
Splitting and Reassembly
H.245
Multimedia Control
Allows negotiation of H.245 Control messages in parallel
WNSRP is one of RADVISION’S contributions to the H.324 standard
WNSRP

15. 3. Behind The Scenes: The WNSRP Consortium

16. 3. Behind The Scenes: Current Status
WNSRP was approved…
ITU
New H.324 version: August 2005
3GPP
New TR version: September 2005
Vodafone’s video telephony spec (WNSRP is mandatory)

17. 3. Behind The Scenes: 2006
A complementary solution to WNSRP is currently being debated
RADVISION is part of this discussion
At the time of writing, the complementary solution includes:
ACN RADVISION FM
FSS

18. 3. Behind The Scenes: Other Contributions
WNSRP H.324 Amd2
Dual video support H.324 Amd1
Session Reset H.324 Amd1
Conflict resolutions H.245 Appendix X
Soft Keys Proposal
ACN & CAN Proposal
IMTC 3G-324M AG Co-chairman
IMTC conferencing AG Co-chairman
IMTC Vice President

19. Interoperability
Importance
RADVISION’S Approach

20. 1. Importance Reduces the risk of recalls
Mobile handsets recall is a costly process for both the operator and the handset vendor
Focus on both interoperability with handsets on the market as well as future extensions (introduction of new services and codec's)
Video is not as easy as Voice
More codec's
Capability negotiation is not a simple process
Implementing the exact codec profiles properly
Focus on quality in a 64Kbps bandwidth

21. 3. RADVISION’S Approach
Commitment to the standardization process along with a high level of interoperability
Active member in all related international organizations
IMTC 3G-324M activity group co-chairman
Host of the next F2F event
RADVISION’S initiatives
WNSRP testing with operators and handset vendors
Remote IOT service on select features

23. Agenda 3G-324M in a nutshell Challenges in developing 3G handsets
Solutions and implications
Fast Call Setup
Interoperability
Handset Integration Aspects
Completeness and Future Safety

24. Handset Integration Aspects
3G-324M Toolkit Architecture
Windows Mobile

25. 1. 3G-324M Toolkit Architecture
Baseline protocol functionality + many extensions
H.245
AutoCaps
Application
H.245v11 Support
Optimized ASN.1 PER Encoder
GEF
H.245
Call
Manager
Codec's
Reliable control transmissions
Support for SRP, NSRP and WNSRP
H.223 Split
CCSRL,
xSRP
Codec
Interface
Simple codec's integration interface with quality management
PMT
H.223 Multiplexer/De-multiplexer
H.223 Annexes A, B, C, D
AL1-AL3, AL1M-AL3M OS
abstraction
(core)
Air Interface/Network Interface
Allows for enhanced portability
Keeps rest of the Toolkit OS agnostic

26. 1. 3G-324M Toolkit Architecture: Add-ons
AutoCaps
Application
H.245 Automatic capabilities negotiation and analysis
Automatic channel opening and conflict resolutions
Rapid time to market
Proven interoperability
GEF
H.245
Call
Manager
Codec's
Time-to-Market
H.223 Split
H.245 Generic Extensibility Framework for latest codec's support
CCSRL,
xSRP
Codec
Interface
Time-to-Market
PMT
Stack split into 2 processes: Call management and H.223
H.223 Multiplexer/De-multiplexer
Scalability OS
abstraction
(core)
Air Interface/Network Interface
Passive monitoring for one-leg analysis
Time-to-Market

27. 1. 3G-324M Toolkit Architecture: Layering
Application
PMT
API
Add-on
H.223 Split
AutoCaps
GEF
Stack Mgr
API
Codec's
API
Call Manager
API
Stack
Manager
Layer
Codec's
Interface
Call Manager
Layer
Manual/Automatic
API
H.223
Layer
H.245
Layer
Base Band
Interface
PVT/PST
API
Application
Base band
PVT/PST (ASN.1)
Layer

28. 2. Windows Mobile: Why? An example of the issues that need to be dealt
Windows Mobile 5.0 is gaining popularity in APAC

29. 2. Windows Mobile: Common Architecture
Application Chip
Intel
PXA270
Windows
Mobile 5.0
Proprietary /
Nucleus
TAPI
over
RIL
Codecs
Software; or
Hardware accelerated
USB /
UART
DSP Chip
Base Band
Chip

30. 2. Windows Mobile: Common Pitfalls
An integrated approach to Mobile Video Telephony
Forgetting to integrate with Call History
Dialing audio only or video calls won’t have the same call history
Not integrating fully with Direct Show and Phone Canvas
Inability to answer a call while listening to an MP3
Inability to switch properly between applications in the middle of a call

31. 2. Windows Mobile: Interfaces
Baseband (Network)
Microsoft TAPI over RIL
Can be done through USB or UART
Codecs (Media)
Microsoft DirectShow
Codecs should be optimized
Application (GUI)
PhoneCanvas
Call History
Outlook Contacts

32. Agenda 3G-324M in a nutshell
Challenges in developing 3G terminals and servers
Solutions and implications
Fast Call Setup
Interoperability
Customization
Product aspects
Completeness and Future Safety

33. A Family of 3G Development Solutions
MEGACO
ProLabTM Test
Management
Suite
RTSP
SIP Toolkit
with IMS
3G-324M Toolkit
3G Suite
Development Solutions

34. Radvision complete solution for today’s needs
Video
Telephony
Presence, IM
PoC
Streaming
3G-324M
SIP
SigComp, SIMPLE etc.
RTSP
C APIs
JSR 32 & 180
A-RTP
SRTP, PoC, etc.

35. Future proof SIP A-RTP with IMS support Video Telephony Presence, IM
PoC
Streaming
Other Future
Services
SIP
with IMS support
A-RTP
SRTP, PoC, etc.

36. ProLab: 3G-324M and VoIP Testing Topology
IP Video Network
3G-324M Network
SIP
Simulation
3G Wireless
Network
SIP Server
WCDMA IP
ProLab
Test Manager
PRI
DUT
3G Gateway
PRI
Public ISDN
Network
MCU

37. Thank You
Questions?