Tech Talk Series - Next Generation Gigabit WiFi

© 2010 Verizon. All Rights Reserved. PTE11987 05/10

Next Generation Gigabit WiFi - 802.11ac

{ POWERFULL ANSWERS }

Farrukh Wasim, CCIE # 19750, Cisco Wireless LAN Design Specialist, Aruba-Certified Mobility ProfessionalNetwork EngineerEmail: [email protected]

Office: (714)-390-2785

Confidential and proprietary materials for authorized Verizon personnel and outside agencies only. Use, disclosure or distribution of this material is not permitted to any unauthorized persons or third parties except by written agreement.2

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WHY DO WE NEED FASTER WI-FI?

• More devices per user/BYOD.

• Mobility increasing demand more bandwidth and performance throughout

the network.• “Big” apps / Higher Bandwidth Applications:

Internet Video Streaming 2.5 to 8 Mbps

HDTV 19.4 to 25 Mbps

Blu-Ray 40 Mbps

Uncompressed “good” Video 8 bit, 1920x1080

796 Mbps

Uncompressed “Best” Video 10 bit, 1920x1080

3730 Mbps

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Evolution of 802.11

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What is 802.11ac

Optimized for high bandwidth applications

Backwards compatible with 802.11n and 802.11 a/b/g

Optimized for better client battery life

Provides better coverage in dense environments

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New features of 802.11ac

• Wider Channels and More Spatial Streams than 802.11n

• Data rates Up to to 1.3 Gbps (Wave 1) & 3.6 Gbps (Wave 2)

• Operates in 5GHz Band only

• Multiple input, multiple output (MIMO) antenna technology to avoid multipath interference problems and improve data throughput• Beamforming, or concentrating signal strength from an antenna toward one or more

client devices

• Less air time: faster throughput result means packets are taking less air time which also translates to less probability of RF interference

• Noticeably faster connectivity enabling an enhanced Quality of Experience for the end user

• Wired-like experience at higher speed

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•SU-MIMO (802.11n)One frame for one receiver (Hub like technology)

•MU-MIMO (802.11ac)

Multiple simultaneously frames to multiple receivers (Switch like technology)

Single-User MIMO (802.11n) vs Multi-User MIMO (802.11ac)

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•Beamforming is a signal processing technique used to control the directionality of the transmission and reception of radio signals• In previous generations, wireless was like a lightbulb, with a hotspot or access point "radiating" wireless indiscriminately in a set area. Beamforming is like a laser or lighthouse -- the AP recognizes the device that needs wireless and focuses the wireless directly where it's needed

Beamforming: 802.11ac promises great Wi-Fi enhancements

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Comparison of 802.11n and 802.11ac

IEEE Standard

Date Band Technology Mod ChannelBandwidth

MIMO Maximumspeed

802.11n 20092.4 and5 GHz

OFDMUp to64 QAM

20, 40 MHz Up to4 X 4

600Mbits/s

802.11ac

End-2013 (Wave-1)

+ 2015(Wave-2)

5 GHz OFDMUp to256 QAM

40,80,160 MHz

Up to8 X 8

3.6 Gbits/s+

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Is Your Network Infrastructure Ready for Next-Gen Wi-Fi Traffic?

• Plan and manage from the start with a flexible technology road map• Consider an end-to-end architecture• Scale up bandwidth

– Switching has to be Gigabit at the edge– Recommend 10Gbps from the edge to the core– Core switching will need 10 Gbps interfaces

• Review cabling Infrastructure– Second-wave 802.11ac APs will require two, not one, Gigabit Ethernet ports, That just doubled your

need for switch ports and cable runs

• Switching will need to be PoE+ (802.2at) cable– 802.11n access points use up to 15mw of PoE but 802.11ac access will be estimates in the 20-25mw

range which 802.3af (regular PoE) will not support.

• RF designs have to be done from a 5Ghz perspective– This will mean that your AP density will be higher because the 5Ghz wavelength is shorter and

attenuates greater than 2.4Ghz when transmitting through building materials, Knowing that this was coming and that 5Ghz has become the preferred band to use you should plan WLAN RF designs from the 5Ghz perspective.

• Work closely with telecommunications service providers

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•Broadcast multiple SSID's/Wireless networks from a single antenna, allowing you to create multiple networks for guest, multiple managed, and/or voice networks.•Dynamically load balance your clients on the network with adaptive Radio Management technology support. So that in the event of an access point going offline, or high load in one area, other nearby points will increase antenna strength to compensate.•Scalability from a few managed APs at a single location to many thousands across the nation •Enforces uniform policy and security from day 1•Optional Verizon provided wireless-enabled 802.1x compliant RADIUS authentication appliance•Security monitoring including Rogue Access Point detection and customer notification

Verizon Managed Wireless LAN

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Verizon Managed Wireless LANFeatures and Benefits

Central Access Point Management

Enforces consistent security and policies across your entire wireless network no matter where the AP may be deployed. Can help reduce security risks and holes.

Air Monitoring Options

Two options depending on an enterprise’s RF security needs, while offering wireless LAN security. Both Simultaneous and Dedicated Air Monitoring help to promote strict wireless security throughout your enterprise’s RF space.

Security and Encryption

Works with all IEEE-approved wireless security standards, including 802.11i and WPA2. Will incorporate newer standards as they are approved.