The Rejuvenation of 2.4 GH

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2 The Rejuvenation of 2.4 GH Impact of IoT and ax Mathew Edwards, Aerohive Networks Perry Correll, Dir Product management Aerohive Networks 2017 Aerohive Networks Confidential

3 Wi-Fi Technology Evolution is 20 Years old this year Mbps a 54Mbps b 11 Mbps 5GHz g 54 Mbps 2.4GHz n 600Mbps n 300 Mbps X ac >1Gbps Many properties still operate networks based on 11g technology Is Yours? 11n 2x2 11n 3x3 11ac 3x3 11ac 2x2 11ac 4x4 Wave 2

4 Major Hotel Wi-Fi 10 Years: 2.4 GHz

5 Wi-Fi Technology Evolution 20 Years: 2 Meg to 10 Gig a 54Mbps 5GHz n 600Mbps ac >1Gbps ax ~10 Gbps Mbps b 11 Mbps g 54 Mbps 2.4GHz n 300 Mbps ax TBD n 2x2 11ac 3x3 11ax 11n 3x3 11ac 2x2 11ac 4x4 Wave 2

6 2010 Why Everything Wireless Is 2.4 GHz You live your life at 2.4 GHz. Your router, your cordless phone, your Bluetooth earpiece, your baby monitor and your garage opener all love and live on this radio frequency, and no others.. Wi-Fi routers started as proprietary, paired systems operating on all manner of frequencies, only settling on a standard 5 GHz with the codification of a. Then the Institute of Electrical and Electronics Engineers agreed that 2.4 GHz, with its wide channel selection and range/penetration/cost potential, was a safer bet 6

7 2015/6 Death of the 2.4GHz Band The 2.4GHz Junk Band 2.4GHz is Dead Abandoning the 2.4GHz ISM Band for Greener Wi-Fi Pastures Death to 2.4GHz! Apple and Cisco acknowledge that 2.4GHz Wi-Fi is too unreliable and crowded Why 2.4 GHz is a dead end for Wi-Fi It s time to abandon 2.4GHz and concentrate on 5GHz. Finally the death of the 2.4GHz spectrum The reports of my death are greatly exaggerated. 7

8 2017 Resurrection of the 2.4GHz Band Why you shouldn t give up on the 2.4Ghz band just yet Enough Already with the 2.4GHz is Dead Idiocy Is 2.4GHz really Dead? 5GHz is better, so why aren t we letting go of 2.4GHz! Why we can t abandon 2.4 GHz just yet 2.4 GHz is dead! Long live 2.4GHz 2.4GHz is a headache for Wi-Fi Users, and it s here to stay Why 2.4GHz makes sense for most IoT Applications ax will utilize the 2.4GHz and 5GHz 8

9 Wi-Fi Use Case Evolution From an Expense to a Value? 2007 Infrastructure 2017 Business Intelligence Primary Role - Client connectivity 1 devices per users Design for Laptops & coverage Designed for Access Still 2.4GHz centric, moving to 5GHz Application focus Web & Provides Business Intelligence 3 + devices per users & IoT Design for handhelds & Performance Designed for Secure Cccess 5GHz and 2.4GHz - both required Application focus Anything

10 IOT What Manufactures Want Low Cost Low Power Long Range 1x1, 2x2, 11n still good enough Many chip manufactures still producing 2.4 GHz only chipsets 2016 Aerohive Networks Confidential 10

11 Understanding Radio Frequency 11

12 The 2.4 GHz Band Basics The 2.4GHz spectrum for usage is only 83MHz wide Each channel is either 22 MHz wide or 20 MHz wide based upon modulation type There are 14 channels in this range (but only 3 nonoverlapping) Used for b/g/n (and 11ac) 12

13 2.4 GHz Channels Used for b/g/n/ax Channels 1, 6, and 11 are the only non-overlapping channels between within 1 through 11 - Using channels that cause overlap may cause CRC errors and other wireless interference or collisions. 13

14 2.4 GHz Pros and Cons Pros: Propagation (coverage) = Good RF Penetration = Good Higher data rates propagate further at lower frequencies World Wide Availability Huge Installed Base of products & Growing Con: Available Channels (B/W) = Limited Data rates = Lower Interference = Higher Capacity = Lower 14

15 The 5 GHz Band Basics Multiple bands for use ] UNII 1 ] UNII 2 ] UNII 2 Extended ] UNII 3 OFDM channels are approximately 20 MHz wide There are 24 channels in this range The channels do not overlap as in 2.4 GHz Dynamic Frequency Selection (DFS)is required for use in certain regions to utilize some channels 15

16 5 GHz Channels Used for a/n/ac The 5 GHz spectrum has more non-overlapping channels available. 16

17 5GHz Band Proposed Expansion GHz GHz GHz GHz GHz 5.85 GHz GHz U-NII-1 (100 MHz) U-NII-2A (100 MHz) New Band U-NII-2B (120 MHz) U-NII-2C (255 MHz) U-NII-3 (125 MHz) New Band U-NII-4 (75 MHz)

18 5 GHz Pros and Cons Pros: Available Channels = Significantly Higher Data Rates = Superior Overall Capacity = Superior Interference = Significantly lower (Today) Variable World Wide Channel Availability Con: Propagation (coverage) = Reduced RF Penetration = Reduced Access points = More Required 18

19 802.11ax Band Support Out of Box support for 2.4 GHz & 5 GHZ Backwards compatibility for 11b/g/n/ac TWT Target Wake Time Resource Units- Sub channels 19

20 Dual 5 GHz capabilities 10/10/17 20

21 Software Defined Radios Maximize Bandwidth Radio 1 5GHz 11ac Radio 2 5GHz 11ac OR 2.4GHz 11n Maximize Performance Maximize Efficiency Maximize Investment

22 Summary Wi-Fi frastructure It s Just Spectrum, take advantage of all available Bandwidth IOT Devices require Low Cost, Good coverage, World wide support = 2.4 GHz, LAN-Pros Understand 2.4 GHz and design accordingly

23 QUESTIONS?

24 Thank You International Headquarters Aerohive Networks Europe LTD The Courtyard West Street Surrey, UK GU9 7DR +44 (0) Fax: +44 (0)