january 23-26, 2007 ft. lauderdale, florida challenges in deploying vowlan

January 23-26, 2007• Ft. Lauderdale, Florida

Challenges in Deploying VoWLAN


Agenda

• Introduction

• Market Overview

• Challenges

• Solutions


Introduction to Global IP Sound

• Industry leaders of embedded media processing solutions

– All products designed specifically for real-time communications on packet networks

– 11 patent applications filed; 7 officially granted, 4 in review– Industry standard designation by CableLabs and the IETF

• A team of media processing and IP telephony experts– Founded in Sweden in 1999 by Professor Bastiaan Kleijn

and Dr. Roar Hagen– Well-seasoned senior management team located in San

Francisco, CA– Approximately 70 employees with offices in Stockholm, San

Francisco, Boston and Hong Kong


Market Overview


PC ATA IP Phone Wi-Fi Phone

All about the same product -- VOICE

Expansion of VoIP Communications


Market Adoption Forecast

The Promise of VoIP Beginning to Materialize

TechnologyTrigger

Peak ofInflated

Expectations

Trough ofDisillusionment

Slope ofEnlightenment

VoIP

WiFi

Location aware services

Smart phones


Major Markets

• Residential

• Mobile

• Enterprise


Types of Networks

• Unplanned– Residential

• Engineered– Mobile– Enterprise


Market Segments


Challenges


Key Challenges

• Usability

• Devices

• Network


Usability Challenges

• Device registration

• Mobility


Device Challenges

• Size, cost, battery life

• Network compatibility

• Device intelligence

802.11GSM

CDMA

3G


Network Challenges

• Radio frequency attributes– Channel planning– Signal to noise ratio (SNR)

• Network capacity

• Mobility

0 1 2 3 4 5 6 7 8 9 10 11


Network Challenges

• WLAN (and Hotspots)– Long delay and significant jitter (up to 500 ms)

– Packet loss up to 40% during congestion

– Poor coverage results in poor link quality

• Challenges magnified in unplanned network scenarios


Solutions


Solutions

1500 bytes

Data Packet

100 bytes

Voice Packet

Access point capacity is diminished by 15


Solutions

IP Network

< 150 ms for end user satisfaction

Access point capacity is diminished by 15


Traditional Jitter Buffer & Error Concealment Techniques

Sequential approach


GIPS IP Design ApproachNon-sequential approach making the most of the available packets


High Resolution Adaptive Jitter High Resolution Adaptive Jitter BufferBuffer

~ 30-80 ms savings, one way, compared to traditional jitter buffers

Adaptive jitter bufferJitter Fixed jitter buffer GIPS NetEQ™

Packet number

140

120

20

80

100

40

60

00 200 400 600 800 1000 1200 1400 1600 1800 2000

Dela

y (

ms)


Adaptive Codecs

• Adapt bit rate and packet size to network conditions

– Eg. iSAC• 10-32 kbps or 30-60 ms packets

– Provide higher density

– Superior media processing over “real-life” networks


Conclusions

• Unmanaged networks will always have challenges

– Solutions must be built on highest quality platforms to mitigate these

• Manage delay and packet loss at the edge of the network

– WiFi Devices – Internet Access Points


Questions?

january 23-26, 2007 ft. lauderdale, florida challenges in deploying vowlan

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