January 23-26, 2007 Ft. Lauderdale, Florida A Wireless World Emerges? The Benefits and Challenges of...

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

A Wireless World Emerges?The Benefits and Challenges of Businesses Based on WiFi


Who is Cognio?

• The market leader in Enterprise WiFi RF tools

• Based in Germantown, MD• Key patent holders in WiFi

interference and mitigation with dozens of patents in this space

• OEMs: AirMagnet, Cisco, Fluke, WildPackets

• Solutions: tools and embedded solutions for mitigating RF interference

5 year old company focused on spectrum analysis/analytics capabilities


WiFi Technology Enablers

1.1. Free spectrumFree spectrum2.2. Inexpensive devicesInexpensive devices3.3. StandardizationStandardization

1.1. Free spectrumFree spectrum2.2. Inexpensive devicesInexpensive devices3.3. StandardizationStandardization


Driving Innovations in Productivity and Commerce

Environment Applications

Retail

Asset tracking

Inventory management

In store telephony

Mobile kiosks

HealthcareMobile bedside care

Location-based call routing

Asset tracking

Financial services

Real time mobile data

Guest and contractor access

Video surveillance

GovernmentPublic safety and security

Digital communities

Emergency services


Meets All of Our Need to be Free

1.1. UntetheredUntethered2.2. RealtimeRealtime3.3. FastFast

1.1. UntetheredUntethered2.2. RealtimeRealtime3.3. FastFast


The Unlicensed Band Experiment

Unlicensedband

“We are about to have an unplanned real-time experiment on the consequences of uncoordinated spectral sharing … using incompatible etiquette rules”

“We are about to have an unplanned real-time experiment on the consequences of uncoordinated spectral sharing … using incompatible etiquette rules”

- USA Federal Communications Commission, Technical Advisory Committee Meeting Report 12/00


The Experiment is a Success!

Experimental Result: Many device types and devicesExperimental Result: Many device types and devices


Are we heading for a train wreck?


For WiFi, other WiFi is a problem

• Co-channel interference (CCI) comes from another AP located on the same channel

– Ex. AP next door– Ex. Neighboring cell– With CSMA, effectively share the

capacity

• Adjacent channel interference (ACI) comes from an AP on an overlapping channel

– Ex. I am on channel 1, another AP is on channel 2

– Can be more worse than (CCI)


And then, there’s the rest…


Performance Requirements for Applications

+/-20ms30ms1.5* 10-3 16 kbps2 perMQ Voice Calls

+/-5ms10ms1.5* 10-3 128 kbps2 perHQ Voice Calls

>100ms>100ms0500 kbps1Low Speed Data

>100ms>100ms02 Mbps1Med. Speed Data

>100ms>100ms010 Mbps1High Speed Data

+/-10ms100ms5.8* 10-5 256 kbps1CD Quality Audio

+/-5ms10ms3.6* 10-5 3 Mbps2 per HQ Video Conf. Call

+/-10ms90ms3.6* 10-5 3 to 7 Mbps1SDTV/DVD

+/-10ms90ms3.6* 10-5 19-24 Mbps1HDTV

+/-10ms90ms3.6* 10-5 30 Mbps3Multiple Stream(1 HDTV/2SDTV)

MaxJitter

Max Latency

Max Packet Error Rate

Data Throughput

Rate

Number of

Streams

Type of Service

Quality of Service Parameters


The Effects of Interference on VoFi


The Effect in Carrier/Home Environments

• 67%* of all residential WiFi problems are interference related

• Creates high cost to providers– Truck rolls (35% of issues*)– Product returns (20% of issues*)– Churn (29% of issues*)

• Voice and video requires service without interruptions or jitter caused by interference

“Technology troubles set off tantrums, tears, and tirades.” USA Today

90%Consumers that say they have had a bad experience

85%Admit to swearing, shouting, crying or hitting something in frustration

71%Think customer service representatives aren't sufficiently trained

63%Believe outstanding customer service is the #1 reason to give more business to a company

53%Believe inability to reach service representatives over the phone or web is the #1 consumer compliant

Consumer gripesConsumer gripes

Source: Harris InteractiveSurvey, October 2006

WiFi in the Home Report


So, what to do?


Incorporate RF plans into your WiFi Planning


Buy the Right Infrastructure

• 24x7 monitoring

• Mitigation

• Better QoS


Use Tools. They Help.


Conclusions

• Unlicensed Band and WiFi experiment was a success to date

• WiFi delivers significant new capabilities and applications

• But there are growing pains related to congestion

• And this impacts reliability, cost of ownership, customer satisfaction…

• To implement these solutions, and to achieve the benefits, planning must be addressed consistently throughout the WiFi life cycle.

January 23-26, 2007 Ft. Lauderdale, Florida A Wireless World Emerges? The Benefits and Challenges of...

Documents

Transcript of January 23-26, 2007 Ft. Lauderdale, Florida A Wireless World Emerges? The Benefits and Challenges of...