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Perry Correll, Xirrus, Principal Technologist

802.11 ac for Hoteliers – Its time Getting off the Wi-Fi Roller Coaster - The Graceful Transition to 802.11.ac. Perry Correll, Xirrus, Principal Technologist. Agenda. Addressing guests' demand for Wi-Fi everywhere Understanding Wi-Fi’s evolution to 11ac

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Perry Correll, Xirrus, Principal Technologist

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  1. 802.11ac for Hoteliers – Its timeGetting off the Wi-Fi Roller Coaster - The Graceful Transition to 802.11.ac Perry Correll, Xirrus, Principal Technologist

  2. Agenda • Addressing guests' demand for Wi-Fi everywhere • Understanding Wi-Fi’s evolution to 11ac • Myth vs. Reality: separating marketing messages from business advantage • Designing High-Performance Wi-Fi Networks: Doing more with less infrastructure • Summary / Q&A

  3. The Exploding Demand for Wi-Fi Understanding guest expectations

  4. Wi-fi has Rapidly evolved

  5. Wi-Fi usage has exploded In 2013 Smartphone/tablet sales will exceed that of all consumer electronics combined – IDC Predictions -2013 Every day another 4 million+ wireless devices are activated – Flurry-2013 55% of hotel guests use Internet during their hotel stay in 2012, up from 20% in 2006. Of those, 87% today connect by Wi-Fi. – J.D. Power, 2012 survey

  6. Networks are not prepared for the traffic Instagram video becomes #1 traffic on Internet on day 1 of release Netflix And YouTube Account For 50% Of All North American Fixed Network Data Real-Time Entertainment responsible for over 67% of peak downstream traffic

  7. Plan your Wi-Fi carefully! “80% of newly installed WLANs will be obsolete or re-engineered in the next 3-5 years due to lack of proper planning” Tim Zimmerman

  8. Wi-Fi’s evolution to 802.11ac What’s the advantage?

  9. 802.11 Evolution • Multi Gigabit Wi-Fi is the future • New standards are focused at 5GHz 802.11ad >5Gbps 60GHz 802.11ac >1Gbps 802.11n 600Mbps 802.11a 54Mbps 5GHz 1997 1998 802.11n 300Mbps 802.11 2Mbps 802.11g 54Mbps 802.11b 11Mbps 2.4GHz 1999 2000 2002 2003 2004 2008 2009 2013 2014 2011 Wi-Fi Standards Evolution

  10. What is 802.11ac • High performance • Raises the ‘low’ end • Superior throughput • Backwards compatible • Support more devices • ‘Cleaner’ spectrum • Improved battery Life • Focus on 5GHz spectrum • Improved modulation efficiency • Channel bonding up to 160Mz • Up to 8 spatial streams • MU-MIMO • Technology • Benefits Data rates up to 6.9Gbps

  11. 802.11n vs. 802.11ac • 802.11n • Up to 600Mbps • Up to 64 QAM Modulation • Up to 40Mhz channel width • Up to 4 data streams • MIMO- Single client link • 802.11ac • Up to 1.3GBps / 6.9Gbps • Up to 256 QAM Modulation • Up to 80/160Mhz channel width • Up to 4/8 data streams • MU-MIMO-Multiple client links

  12. Standards Roll out plans • Final standard approved by the IEEE Feb’14 • http://grouper.ieee.org/groups/802/11/Reports/802.11_Timelines.htm • 3 Streams • 80 MHz channel width • 256 QAM • Product Availability: Now WAVE 2 • 4/8 Streams • 160 MHz channel width • 256 QAM • MU-MIMO • Product availability: 2H ‘14 • Wi-Fi Alliance has launched Wi-Fi Certified™ ac • http://www.wi-fi.org/discover-and-learn/wi-fi-certified%E2%84%A2-ac • Wave 1 product certificationcompleted • Wave 2 products certification: expected late 2014 /early 2015

  13. Side Note: New Spectrum Proposed • Importance of Additional Spectrum • Wide bandwidth channels to support high throughput requirements • Current UNII spectrum allows only • Twenty four 20 MHz channels • Six80 MHz channels • Two 160 MHz channels • Additional unlicensed use of 5.35-5.47 GHz and 5.85-5.925 GHz allow • Nine 80 MHz channels • Four 160 MHz channels Currently available channels New channels 36 40 44 48 52 56 60 64 68 72 76 80 84 88 92 96 100 104 108 112 116 120 124 128 132 136 140 144 149 153 157 161 165 169 173 177 181 IEEE channel # 20 MHz 40 MHz 80 MHz 160 MHz UNII-1 UNII-2 NEW UNII-2 UNII-3 NEW 5250 MHz 5350 MHz 5470 MHz 5725 MHz 5825 MHz 5925 MHz

  14. Is it time to consider to 802.11ac? • What is the current feedback from guests and event schedulers? • What Wi-Fi technology is your existing system based on? • How long do you want your next upgrade to last? 802.11ac sales will accelerate, reaching over 90% of all Wi-Fi devices by 2015 Growth of 802.11ac capable Wi-Fi devices reach nearly 2 billion by 2015 Assuming 3 year replacement rate = 70% 802.11ac market share by 2015.

  15. 802.11ac: Myth vs. Reality separating marketing from value

  16. Myths vs. reality • Only high-end clients need this much bandwidth/speed • Very few 11n clients reached 450Mbps, all still received value • Higher bandwidth releases the channel quicker • Making additional time (bandwidth) available to other clients • Improves overall capacity and performance of the network • Key value of 11ac is raising the lower end • Just wait for Wave 2 (MU-MIMO, 6.9Gbps, …) to be safe • Wireless continues to evolve with newer technology every 2-3 years • 2007 to 2015 saw 802.11n 2x2, 3x3, 802.11ac Wave 1 & Wave 2 • Reality – it depends on your wireless requirements, If your users will benefit from improved wireless performance today, go forward • Probably a few still waiting for 11n 600Mbps (4x4)

  17. Myths vs. reality • Only limited # of 11ac clients used by guests • Samsung has sold 40 million Galaxy S 4s (11ac) • Can’t buy Apple laptop without 802.11ac • MRG estimates 58 million 11ac phones shipped in 2013 • Turnover rate continues to drop (6 months), 11ac will be the default chipset • http://wikidevi.com/wiki/List_of_802.11ac_Hardware • LTE growth will significantly reduce need for Wi-Fi • Cellular and Wi-Fi are not competitors, • Cellular and Wi-Fi are complementary technologies • Cellular is large coverage area with low data rate (relative) • Wi-Fi is reduced coverage area with high data rate (relative) • Think Wi-Fi offload, Passpoint, 802.11u, NGH, …..

  18. Myths vs. reality • 802.11ac will require a complete network rip and redesign • Technology (wired and wireless) continues to evolve, planning for it is key • You will still need to support legacy technology for a long time • Designing with up to 160Mhz channels, using 256QAM, Rx Sensitivity of 51dBm to get max data rates is a waste of time, energy and money • Think like an engineer, not a scientist • 11ac allows you to reduce # of APs to offer same bandwidth • Yes, in Theory, No, in Reality – where do you want to live? • Performance will always be based on the clients capability, not just AP • Always will have mixed environments, lowest common technology • Wireless is continuing to grow and you will always need more bandwidth • Think radios, not APs

  19. Myths vs. reality • Just too many technical challenges with 11ac • Not enough 5GHz channels available (80-160Mhz per channel??) • Complex channel planning • Will increase CCI & ACI interference • I will lose support for 2.4Ghz • My existing network was designed for 2.4Ghz • 11ac requires higher signal strength (RSSI) to be effective (1.3Gbps) • Phones and tablets require stronger signal strength (RSSI) • Need to upgrade my edge switches • Need to upgrade my switch uplinks • Will 802.3af be enough – maybe • Now I will need to pay for a consultant too! • Urgh, cat 3 to cat 5 was so easy

  20. Myths vs. reality • Myths and Questions From Audience • What are you hearing? • What are you believing? • What are you thinking about? • What's keeping you up at night? • What are other vendors telling you? • What are your consultants telling you? • What about other technologies 802.11ad, af, …

  21. Designing High-Performance Wi-Fi Doing more with less infrastructure

  22. Hotel Wi-Fi design evolution 2014 • Mandatory requirement • 3-5 active devices per room • Design RF for tablets/phones (-65/-59) • 5Ghz centric, but 2.4 is required • Application focus – Video and Gaming • Facility wide coverage • Wired is no longer an option • Cellular integration - Passpoint • Quality of Experience • Meeting space Wi-Fi required • Wi-Fi = Monetization of the data? 2010 • Nice to offer • 3-5 active devices per floor • Design RF for laptops (-72) • 2.4 centric • Application focus - Email • Guestroom coverage • Wired still primary • Cellular - not my problem • Quality of Service • Meeting space Wi-Fi requested • Wi-Fi = infrastructure expense

  23. Client environment - Reality 300Mbps 2.4G and 5G 450Mbps Max 65Mbps = = 2.4GHz = 5GHz 2.4G and 5G 150Mbps Max = 150Mbps 65Mbps 1.3Gbps 2.4G only 65Mbps Max = 52Mbps 24 Mbps 6Mbps 6Mbps 45Mbps 120Mbps 150 Mbps In a Wi-Fi network, the user data rates varies with distance, device type, Wi-Fi band, channel width capability, interference, …..

  24. Wi-Fi Capacity - Reality 150Mbps Max Instantaneous Bandwidth 5GHz Radio 2.4GHz Radio 50Mbps Avg Capacity: Multiple Users 300Mbps Max Instantaneous Bandwidth 100Mbps Avg Capacity: Multiple Users In a Wi-Fi network, radio capacity is reduced by protocol overhead and is shared by multiple users

  25. High Density Capacity Planning Radio Gartner recommends provisioning 6Mbps per user Individual User Capacity Total Available Capacity Wireless network design based on number of users per radio 5GHz radio: 100Mbps / 6Mbps = ~15 users per radio 2.4GHz radio: 50Mbps / 6Mbps = ~8 users per radio

  26. mixed client environment - optimization • The Challenge • Wi-Fi is shared medium - slow clients reduce speed of fast clients • The Solution – Client Classification and Segmentation • Separate high speed and low speed clients on different radios • Maximize system performance for ALL clients

  27. 11ac Design considerations • Wireless Architecture • Distributed/Edge traffic processing • Design for 5Ghz coverage • Achieving AC speeds • Understand the mixed client environment • Classify and segment clients based on Band/Mode • Wired Infrastructure • Gigabit links to APs • Design for increased backhaul traffic (MU-MIMO*), Multi-Gigabit uplinks • Implementation planning • Clients and Traffic volume will grow • Designing for the future How long do you expect a new install to last?

  28. Summary • 802.11ac will become prominent in 2014 • Driven from client manufactures • 802.11ac brings great promise • Understand myths vs. realities • Implementation planning is key • Architecture, client mix, fixed radios

  29. Thank Youinfo@xirrus.com Perry Correll, Xirrus, Principal Technologist

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