Jan Linden’s Presentation at eComm 2009

Non-Obvious Challenges and Opportunities for VoIP and Video on the iPhone
Jan Linden, Global IP Solutions

Introduction
Global IP Solutions (GIPS)
Founded 1999
Recognized leader in world class voice and video processing technology for IP networks
GIPS s/w is deployed in over 800 million end-points
Enables developers to offer the highest quality regardless of network conditions and device
Jan Linden
Vice President Engineering – GIPS
R&D in speech and video Processing for more than 15 years

Mobile Market Trends
Fixed Mobile Convergence
Unified communications
Migration from legacy cellular to next-gen networks
Allows for faster data connection
Growth of Smartphone adoption
iPhone big part of growth, especially in consumer space
Increased accessibility and affordability
Attractive data pricing models
Handset prices declining
No ideal mobile VoIP platform exists yet
Development of 3 rd Party Applications
VoIP over mobile in high demand

Mobile VoIP Design Considerations Coping with network degradation Power Consumption – Battery life Hardware issues (Processor, OS, acoustics, etc.) Echo cancellation Additional voice processing Environment – Background Noise, speaker phone mode Speech codec VoIP Design Challenges Network Codec Hardware Echo Power Voice Environment

The iPhone as a VoIP Platform
iPhone one of the most VoIP friendly phone on market…
Open APIs for easy development
Sufficient CPU resources
Support of HD Voice (headset only)
Intuitive UI makes for simple navigation between applications
Demand for 3 rd party apps is higher than other phones
… but strengths present unique challenges
Running too many applications can drain resources
Usage scenarios can negatively impact voice quality

iPhone Specific Challenges
Only VoIP over WiFi currently possible
3G network not available for Apple compliance
Applications cannot run in the background
Push notifications announced but not delivered
Rumors about background application support in next release
Regular Mac audio APIs not available on iPhone
Very iPhone specific solution had to be designed
Application must monitor change of audio route (e.g. headset in/out) and handle this
Wideband audio not available via built-in microphone

What’s Needed?
Robustness
Robust speech codec and smooth packet loss concealment
Adapt to network busts and excessive mobile jitter
Efficiency
Optimized for ARM processors on iPhones prolongs battery life
Audio quality
Codecs designed for IP networks
HD voice
Aggressive Voice Quality Enhancement
Detect and cancel background noise
Suppress acoustic echo

Summary
High quality VoIP on iPhone and iPod touch available today
Nimbuzz, truphone,…
Remaining challenges
Applications cannot run in the background
VoIP over 3G not allowed
Two-way video not yet possible
No application access to camera
No front-facing camera
And no, Apple doesn’t have a patent on video conferencing for touch screen phones

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Jan Linden’s Presentation at eComm 2009

by eCommConf on Mar 05, 2009

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Jan Linden’s Presentation at eComm 2009 — Presentation Transcript