Noisy Times in Wireless Welcome to Our World

WiMAX Those who cannot remember the past are condemned to repeat it. - George Santayana June 3 rd 2008 Wi-Fi: A Near-Death Experience? RUCKUS ITR PRESENTATION / CHICAGO 2 ” ” WiMAX to Replace Wi-Fi Within Five Years

M 2.8B 874M 1.1B Ethernet devices Wi-Fi devices Source: iSuppli 2012 A WORLD GOING WI-FI Annual Unit Shipments Wi-Fi Powers the Post-PC Era Tablets Ultrabooks Lighting Environmental Systems o Mobile data plans drive user demand for Wi-Fi o No spectrum fees for Wi-Fi service providers o Low cost/bit in wireless data capacity WHY WI-FI? Projectors RUCKUS ITR PRESENTATION / CHICAGO 3

Wi-Fi is the New Ethernet Opens Up Massive New Market Opportunity Source: DellOro Group 95 Today $25B $1B Ethernet Switch Port Market ($ in billions) YESTERDAY TODAY 4 RUCKUS ITR PRESENTATION / CHICAGO

Lots of Choices: Everyone has a Thing Big and CloudyRoaming for Voice Access / Security ?Cisco Look-a-Like “Controller-Less” High Density 5 RUCKUS ITR PRESENTATION / CHICAGO Reliability Super 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 29 th 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 Dropped connections have a huge and negative impact on business operations Interference is a Killer! 10 RUCKUS ITR PRESENTATION / CHICAGO

40MHz Doesn’t 5GHz Solve Everything? 5.25 GHz 5.35 GHz GHz GHz GHz 5.15 GHz UNII-1UNII-2 DFS UNII-3 UNII-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 NON-DFS CHANNELS 11 RUCKUS ITR PRESENTATION / CHICAGO

And New Standards Won’t Save You o ac - Next generation Wi-Fi o Better, bigger, faster……..? o Limited improvement for enterprise customers 12 RUCKUS ITR PRESENTATION / CHICAGO

The Key to Better Wi-Fi: SINR o When faced with interference, it’s SINR that matters o Higher SINR = Higher data rates and capacity o So how do you get a high SINR? o You can either increase signal or decrease interference o Adaptive (smart) antenna systems do both! SNR SINR Receive Signal Level Noise Floor T I M E 13 RUCKUS ITR PRESENTATION / CHICAGO

THEMUS Fixed 1:1 relationship between Wi-Fi radios and antennas Dynamic 1:many relationship between Wi-Fi radios and antennas Unique, Patented Technology 14 RUCKUS ITR PRESENTATION / CHICAGO

Interference o Patented technology that combines: o Smart antenna arrays o Best path selection algorithms o Advanced quality of service engine o Smart mesh RF routing o 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 Traditional Approaches to Dealing with RF Interference Reduces coverage, add more APs Creates chaos Reduces performance, channel capacity 16 RUCKUS ITR PRESENTATION / CHICAGO

Reducing Co-Channel Interference Ch 1 Ch 6 Ch RUCKUS ITR PRESENTATION / CHICAGO

Automatic Interference Mitigation Minimizes Packet Loss and Re-Transmissions, Increases Reliability o Interference mitigated by positioning antenna nulls in specific directions o Avoiding interference delivers more benefits than a stronger signal o Better throughput o More predictable connectivity AP 18 RUCKUS ITR PRESENTATION / CHICAGO

Adaptive Polarization Diversity o Better reception (PD-MRC) for weak and hard to “hear” devices o Better transmission to devices constantly changing their orientation Device orientation accounts for up to 5x performance differential among products VERTICAL POLARIZATION HORIZONTAL POLARIZATION 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 n APs performance in a real world environment? RUCKUS ITR PRESENTATION / CHICAGO