Noisy Times in Wireless

Welcome to Our World

WiMAX

Those who cannot remember the past

are condemned to repeat it. - George Santayana

June 3rd 2008

Wi-Fi: A Near-Death Experience?

RUCKUS ITR PRESENTATION / CHICAGO2

””WiMAX to Replace Wi-Fi Within Five Years

2010 2016

694M

2.8B

874M1.1B

Ethernet devices

Wi-Fi devices

Source: iSuppli 2012

A WORLD GOING WI-FIAnnual Unit Shipments

Wi-Fi Powers the Post-PC Era

Tablets

UltrabooksLightingEnvironmental

Systems

o Mobile data plans drive user demand for Wi-Fio No spectrum fees for Wi-Fi service providerso Low cost/bit in wireless data capacity

WHY WI-FI?

Projectors

RUCKUS ITR PRESENTATION / CHICAGO3

Wi-Fi is the New EthernetOpens Up Massive New Market Opportunity

Source: DellOro Group

95

Today

$25B

$1B

Ethernet Switch Port Market($ in billions)

Y E S T E R D A Y

T O D A Y

4 RUCKUS ITR PRESENTATION / CHICAGO

Lots of Choices: Everyone has a Thing

Big and Cloudy Roaming for Voice Access / Security

? Cisco Look-a-Like“Controller-Less”

High Density

5 RUCKUS ITR PRESENTATION / CHICAGO

ReliabilitySuper Low Cost

The Only Thing that Really Matters

The signal, the PHY, the air.

It’s the foundation and the only place where speed and capacity can be improved.

6 RUCKUS ITR PRESENTATION / CHICAGO

But Wi-Fi Has Personal Issues

o Coverage: 1997 – present

o Security: 1997 – 2004

o Roaming: 1997 – 2009

o Speed: 2003 – present

o Capacity: June 29th 2007 - present

7 RUCKUS ITR PRESENTATION / CHICAGO

It’s Inconsistent

vs

8 RUCKUS ITR PRESENTATION / CHICAGO

It’s Unruly

9 RUCKUS ITR PRESENTATION / CHICAGO

It’s Unclear

Interference Packet Loss Retransmission

Dropped connections have a huge and negative impact

on business operations

Interference is a Killer!

10 RUCKUS ITR PRESENTATION / CHICAGO

40MHz

40MHz

40MHz

40MHz

Doesn’t 5GHz Solve Everything?5.25 GHz

5.35 GHz

5.470 GHz

5.725 GHz

5.825 GHz

5.15 GHz

UNII-1 UNII-2DFS

UNII-3UNII-2e DFS

▪ 24 non-overlapping 20 MHz channels

▪ 11 non-overlapping 40 MHz channels

▪ Only 4 non-DFS channels for bonding

▪ Creates channel planning problems similar to 2.4 GHz

▪ 5 GHz isn’t a panacea, RF management is still king

149153

157161

3640

4448

NO

N-D

FS

CH

AN

NE

LS

11 RUCKUS ITR PRESENTATION / CHICAGO

And New Standards Won’t Save You

o802.11ac - Next generation Wi-Fi oBetter, bigger, faster……..?oLimited improvement for enterprise customers

12 RUCKUS ITR PRESENTATION / CHICAGO

The Key to Better Wi-Fi: SINR

oWhen faced with interference, it’s SINR that mattersoHigher SINR = Higher data rates and capacityoSo how do you get a high SINR?oYou can either increase signal or decrease interferenceoAdaptive (smart) antenna systems do both!

SNRSINR

ReceiveSignalLevel

NoiseFloor

INTERFERENCE

T I M E

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THEM US

Fixed 1:1 relationship between Wi-Fi radios and antennas

Dynamic 1:manyrelationship between Wi-Fi radios and antennas

Unique, Patented Technology

14 RUCKUS ITR PRESENTATION / CHICAGO

Interference

o Patented technology that combines:o Smart antenna arrayso Best path selection algorithmso Advanced quality of service engineo Smart mesh RF routingo Centralized Wi-Fi management

o Adapts to real-time changes in environmental conditions

o Extends signal range (Wi-Fi coverage) 2 to 4 times with fewer APs

o Radically simplifies deployment and administration

How Smart Wi-Fi Works

15 RUCKUS ITR PRESENTATION / CHICAGO

Old School Thinking

Lower PHY Rate

ReduceTX

Power

ChangeChannel

s

Traditional Approaches to Dealing with RF Interference

Reduces coverage,add more APs

Createschaos

Reduces performance,

channel capacity

1 2 3

16 RUCKUS ITR PRESENTATION / CHICAGO

Reducing Co-Channel Interference

Ch 1

Ch 6

Ch 11

17 RUCKUS ITR PRESENTATION / CHICAGO

Automatic Interference MitigationMinimizes Packet Loss and Re-Transmissions, Increases

Reliability

o Interference mitigated by positioning antenna nulls in specific directions

oAvoiding interference delivers more benefits than a stronger signalo Better throughputo More predictable connectivity

AP

18 RUCKUS ITR PRESENTATION / CHICAGO

Adaptive Polarization Diversity

oBetter reception (PD-MRC) for weak and hard to “hear” devices

oBetter transmission to devices constantly changing their orientation

Device orientation accounts for up to 5x performance differential among products

VERTICALPOLARIZATION

HORIZONTALPOLARIZATION

5x

19 RUCKUS ITR PRESENTATION / CHICAGO

Please Don’t Believe Us

20

What’s the breaking

point for an enterprise

AP?

How do new 3-stream 802.11n APs performance in a real world environment?

How do new 3-stream 802.11n APs performance

in a real world environment?

RUCKUS ITR PRESENTATION / CHICAGO