Presentation is loading. Please wait.

Presentation is loading. Please wait.

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

Similar presentations

Presentation on theme: "802.11ac for Hoteliers – Its time Getting off the Wi-Fi Roller Coaster - The Graceful Transition to Perry Correll, Xirrus, Principal Technologist."— Presentation transcript:

1 802.11ac for Hoteliers – Its time Getting off the Wi-Fi Roller Coaster - The Graceful Transition to 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 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 802.11a 54Mbps 5GHz 802.11n 600Mbps 802.11ac >1Gbps 802.11 2Mbps 802.11b 11Mbps 802.11g 54Mbps 2.4GHz 802.11n 300Mbps 1997 1998 1999 2000 2002 2003 2004 2008 2009 2011 2013 2014 Wi-Fi Standards Evolution

10 Technology Benefits Data rates up to 6.9Gbps 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 The 11ac that will be ratified early next year is getting a lot of mindshare. There is so much talk about ac, what is it? How does it provide significant improvement over 11n technology. Let us look under the hood. There are some core improvements over 11n that makes it 11ac deliver significantly higher throughput of up to 6.93Gbps. Data rates up to 6.9Gbps

11 802.11n vs ac 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 MU-MIMO (multi-user multiple in multiple out) signal processing uses multiple antennas on the transmitter and receiver operating on the same channel. With spatial multiplexing in ac, up to 8 data streams may be concurrently transmitted and split between multiple devices at once. Higher data rates are achieved by splitting transmitter station streams into separate data streams; each transmitted on a different antenna. MIMO signal processing at the receiver detects and recovers each stream.

12 Standards Roll out plans
Final standard approved by the IEEE Feb’14 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 IEEE ac data rates are dependent on the number of spatial streams obtained through the use of MU-MIMO, 80 vs. 160MHz channel widths, the number of transmit antennas, and the type of modulation. This table shows the maximum data rate achievable at each level, with many additional lower rates occurring at each level dependent on signal level, SNR, etc. Phase ac products, first available in consumer products in 2012 and enterprise products in 2013, support up to 80MHz channels and up to 3 spatial streams for a maximum data rate of 1.3Gbps. Phase 2 and beyond products, expected staring in 2014, will add 160MHz channels and up to 8 spatial streams for a maximum data rate of 6.9Gbps. Wi-Fi Alliance has launched Wi-Fi Certified™ ac Wave 1 product certification completed 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 Six 80 MHz channels Two 160 MHz channels Additional unlicensed use of GHz and GHz allow Nine 80 MHz channels Four 160 MHz channels 144 140 136 132 128 124 120 116 112 108 104 100 165 161 157 153 149 64 60 56 52 48 44 40 36 IEEE channel # 20 MHz 40 MHz 80 MHz 160 MHz UNII-1 UNII-2 UNII-3 5250 MHz 5350 5470 5725 NEW 96 92 88 84 80 76 72 68 169 173 177 181 5825 5925 Currently available channels New channels

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 ac capable Wi-Fi devices reach nearly 2 billion by 2015 Assuming 3 year replacement rate = 70% ac market share by 2015.

15 separating marketing from value
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 n 2x2, 3x3, ac 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) SNR: 6 more db compared to 11n min SNR needed to decode 11ac

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 ac MRG estimates 58 million 11ac phones shipped in 2013 Turnover rate continues to drop (6 months), 11ac will be the default chipset 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, u, NGH, ….. SNR: 6 more db compared to 11n min SNR needed to decode 11ac

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 SNR: 6 more db compared to 11n min SNR needed to decode 11ac

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 SNR: 6 more db compared to 11n min SNR needed to decode 11ac

20 Myths vs. reality What are you hearing? What are you believing?
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 ad, af, … SNR: 6 more db compared to 11n min SNR needed to decode 11ac

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

22 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 - 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 Client environment - Reality
= 2.4GHz = 5GHz 300Mbps 2.4G and 5G 450Mbps Max 65Mbps = 2.4G and 5G 150Mbps Max = 65Mbps 150Mbps 1.3Gbps 2.4G only 65Mbps Max 52Mbps = 24 Mbps 45Mbps 6Mbps 6Mbps 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 2.4GHz Radio 50Mbps Avg Capacity: Multiple Users 300Mbps Max Instantaneous Bandwidth 5GHz Radio 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
Gartner recommends provisioning 6Mbps per user Radio 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?

28 802.11ac will become prominent in 2014
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 You
Perry Correll, Xirrus, Principal Technologist

Download ppt "802.11ac for Hoteliers – Its time Getting off the Wi-Fi Roller Coaster - The Graceful Transition to Perry Correll, Xirrus, Principal Technologist."

Similar presentations

Ads by Google