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1 © 2013 XIRRUS :: All Rights Reserved Perry Correll, Xirrus, Principal Technologist 802.11ac FOR HOTELIERS – ITS TIME GETTING OFF THE WI-FI ROLLER COASTER - THE GRACEFUL TRANSITION TO 802.11.AC
2 © 2013 XIRRUS :: All Rights Reserved 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 AGENDA
3 © 2013 XIRRUS :: All Rights Reserved THE EXPLODING DEMAND FOR WI-FI UNDERSTANDING GUEST EXPECTATIONS
4 © 2013 XIRRUS :: All Rights Reserved WI-FI HAS RAPIDLY EVOLVED
5 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved NETWORKS ARE NOT PREPARED FOR THE TRAFFIC Real-Time Entertainment responsible for over 67% of peak downstream 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
7 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved WI-FI’S EVOLUTION TO 802.11AC WHAT’S THE ADVANTAGE?
9 © 2013 XIRRUS :: All Rights Reserved 802.11 EVOLUTION Wi-Fi Standards Evolution Multi Gigabit Wi-Fi is the future New standards are focused at 5GHz 802.11b 11Mbps 802.11n 600Mbps 802.11g 54Mbps 802.11ac >1Gbps 2014 1998 19992000200220032004200820092013 2011 2.4GHz 5GHz 1997 802.11 2Mbps 802.11ad >5Gbps 60GHz 802.11a 54Mbps 802.11n 300Mbps
10 © 2013 XIRRUS :: All Rights Reserved 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 TechnologyBenefits Data rates up to 6.9Gbps
11 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved STANDARDS ROLL OUT PLANS 3 Streams 80 MHz channel width 256 QAM Product Availability: Now 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 certification completed Wave 2 products certification: expected late 2014 /early 2015 Final standard approved by the IEEE Feb’14 http://grouper.ieee.org/groups/802/11/Reports/802.11_Timelines.htm WAVE 2
13 © 2013 XIRRUS :: All Rights Reserved 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 Six 80 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
14 © 2013 XIRRUS :: All Rights Reserved IS IT TIME TO CONSIDER TO 802.11ac? 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. 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?
15 © 2013 XIRRUS :: All Rights Reserved 802.11AC: MYTH vs. REALITY SEPARATING MARKETING FROM VALUE
16 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved 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 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 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved DESIGNING HIGH-PERFORMANCE WI-FI DOING MORE WITH LESS INFRASTRUCTURE
22 © 2013 XIRRUS :: All Rights Reserved HOTEL WI-FI DESIGN EVOLUTION 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 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?
23 © 2013 XIRRUS :: All Rights Reserved CLIENT ENVIRONMENT - REALITY = 2.4GHz = 5GHz 300Mbps 65Mbps 150Mbps 52Mbps 6Mbps 1.3Gbps 45Mbps 150 Mbps 6Mbps 120Mbps 24 Mbps 2.4G and 5G 450Mbps Max 2.4G and 5G 150Mbps Max 2.4G only 65Mbps Max = = = In a Wi-Fi network, the user data rates varies with distance, device type, Wi-Fi band, channel width capability, interference, …..
24 © 2013 XIRRUS :: All Rights Reserved WI-FI CAPACITY - REALITY 300Mbps Max Instantaneous Bandwidth 100Mbps Avg Capacity: Multiple Users 2.4GHz Radio 150Mbps Max Instantaneous Bandwidth 50Mbps Avg Capacity: Multiple Users In a Wi-Fi network, radio capacity is reduced by protocol overhead and is shared by multiple users 5GHz Radio
25 © 2013 XIRRUS :: All Rights Reserved HIGH DENSITY CAPACITY PLANNING Total Available Capacity Gartner recommends provisioning 6Mbps per user Radio Individual User 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 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved 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 © 2013 XIRRUS :: All Rights Reserved THANK YOU INFO@XIRRUS.COM Perry Correll, Xirrus, Principal Technologist
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