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Wi-Fi Sub 1 GHz RateUp to One tenth the speed 1/54, 1/40, 1/30, 1/20, . . . 1/10
All the radios we carry will follow our authority and policy NFC/FM/TVWS/3G/4G/Bluetooth/Wi-Fi/60 GHz
The angel is in the details Unlicensed Spectrum Dynamic Spectrum Access 802.11 Radios 802.11 Radio Timeline Comparisons Wi-Fi Alliance
Marginal Flexibility of Spectrum per POP0.90.80.70.126.96.36.199 Exclusive Use*0.2 Unlicensed0.1 0 57 240 570 2.4 3 GHz 5.7 24 57 MHz MHz MHz GHz 10 cm GHz GHz GHz 5.2m 1.25 52 cm 12.5 5.2 1.25 5.2 m cm cm cm mm Highest Value Use of Spectrum, Citizens Guide to the Airwaves* http://wireless.fcc.gov/auctions/default.htm?job=auction_summary&id=73
FCC TV White Spaces Spectral MaskAcknowledge Tevfik Yucek, Qualcomm-Atheros -72.78 dB means less than 1/18,967,059 of peak power
White Space spectrum in the USA? FCC consolidated TVWS rules https://mentor.ieee.org/802.11/dcn/11/11-11-0067-01- 00af-fcc-tvws-orders-jan-11-consolidated-text.pdf FCC terminology https://mentor.ieee.org/802.11/dcn/11/11-11-0175-02- 00af-fcc-tvws-terminology.ppt Showmywhitespace.com 1800 Old Bayshore Highway, Burlingame, California http://spectrumbridge.com/whitespaces.aspx US Metro white space https://mentor.ieee.org/802.11/dcn/11/11-11-0499-02- 00af-us-metro-mhzpops.xls
5 GHz license-exempt spectrum detailsChina 2 W EIRP India Campus/Indoor 200 mW EIRP Campus/Indoor 200 mW EIRPJapan Indoor 200 mW EIRP Outdoor 1 W EIRP 5.725 5.875 USA/ Indoor DSRCCanada Outdoor 1 W EIRP 5.470 5.725 4 W EIRPEurope Indoor 200 mW EIRP Outdoor 1W EIRP 2 W EIRP/ DFS&TPC 5.100 5.200 5.300 5.400 5.500 5.600 5.700 5.800 5.900 DFS & TPC DFS & TPC required world wide Showing Aeronautical, Maritime Radiolocation and DSRC
VHT 802.11ac / ad Use cases and Market Drivers 4.5 4.0 Wireless Docking Station 3.5 Uncompressed/ Lossless Video 3.0Rate (Gbps) 2.5 Ultra Fast Synch & Go 2.0 1.5 Lightly Compressed Display Super High Speed WLAN 1.0 Whole Home AV Distribution 0.5 0 In Room Whole ;-) Building Coverage Acknowledge Brian Hart, Cisco
VHT<6 11ac Higher Rate at Range / Robustness MAC thruput@70% efficiency Watt/ hours 1750 1400 1050 2ndGen Home APs 700 350 0 8m 18m 58m
11af Spectrum is both TV white space and other bands Goal – While geographic sharing of spectrum is well- established, we are only just now seeing the emergence of technologies that enable “dynamic” sharing – that is, the ability to identify slices of spectrum that are available at that location, whether for a few seconds, a few minutes, a few hours, or a few days.* All protected spectrum users want quicker resolution of interference. Geolocation databases of spectrum users is quite helpful. 11af is standardizing operation with multiple geolocation databases. *Acknowledge FCC 10-198 Promoting More Efficient Use of Spectrum through Dynamic Spectrum Use Technologieshttp://www.federalregister.gov/articles/2010/12/28/2010-32491/promoting-more-efficient-use-of-spectrum-through-dynamic-spectrum-use-technologies
Some 11af TV band defined elements Others define the Authorized database protocols that Access Points and Fixeddevices shall use, and each AP is certified to operate with a specific Authorized TV bands database. A Registered Location Secure Server accesses the Authorizeddatabases with protocols that others define, and may provide a persistent internetaddress to the databases. APs and 802.11 stations access a Registered Location Secure Server with radio protocols that IEEE 802.11 defines.
Relations between 802.11ac and 11af Expect 11ac PHY to be „frozen‟ by Christmas 2011, and WFA to certify devices by Spring 2013 11af version of 11ac PHY top speed will be less than 10 Mbps per TV channel Expect TV frequencies to affect spatial streams more than any other WLAN PHY technology. Long wavelengths 5.2m-1.4m (VHF) and 63 cm-43 cm (UHF) mean MIMO is less effective than at shorter wavelengths for the same size devices TV channel bandwidths of 6 MHz, 7 MHz and 8 MHz have to be supported by world client radios Expect megabits and kilobits/sec at 3 times range of 802.11g (slower than 5 MHz / 80 MHz scaling)
11af Higher Range / Robustness MAC thruput@70% efficiency Watt/ hours 5X 4X Enterprise AP 3X 2ndGen Home APs 2X X 11n/20 0 8m 18m 1.8km
11ah Sub 1 GHz Started as Wi-Fi for Smart Grid meter reading Not a simple rebanding of 2.4 GHz equipment because of much longer range requirement (>1 km), and some battery powered Internet of Things aspirations. Some want 12,000 devices on one service, some want multi- year battery life. Marketing assessments and engineering assessments this year, first draft March 2012. Should keep the 802.11 PHY experts busy.
802.11 PHY timelines802.11n 802.11ac 802.11ad 802.11af 802.11ah SubHigh Very High Very High Operation in 1 GHzThroughput Throughput Throughput TV BandsDraft 1.0 Draft 1.0 Draft 1.0 Oct Draft 1.0 Feb Draft 1.0May 2006 June 2011 2010 2011 March 2012WFA freeze WFA freeze WFA wait for WFA wait for WFA wait forMarch 2007 Dec 2011 publication publication publication502 pages 242 pages 552 pages 139 pages ?Publish Sep Publish Dec Publish Dec Publish June Publish June2009 2013 2012 2013 20141000 500 Person 400 Person 30 Person 200 PersonPerson Years Years Years YearsYears6 years 5 years 4 years 3 years 4 years
Wi-Fi Alliance Wi-Fi Alliance certifies interoperability between products, not regulatory compliance Soft-AP (laptop or smartphone) drives many new concepts (1 to 1, 1 to many) Wi-Fi Direct between radio devices (not ad hoc) 2010 Wi-Fi Display to large screen (1 to 1) 2011 HotSpot 2.0 with network operators for world-radio clients (like ATM machine networks) 2012 SmartGrid for IPv6 Home Area Networks – Zigbee, HomePlug interoperation 2013
References http://www.ieee802.org/11/ https://mentor.ieee.org/802.11/documents http://www.wi-fi.org/connection/ Cognitive radio in ECC http://www.wonderlandwpa.com/dev/ecc_newsletter_june/june- 2011/index.html FCC TVWS ECFS Proceeding 02-380, 04-186 http://fjallfoss.fcc.gov/ecfs/ FCC consolidated TVWS rules https://mentor.ieee.org/802.11/dcn/11/11- 11-0067-01-00af-fcc-tvws-orders-jan-11-consolidated-text.pdf FCC terminology https://mentor.ieee.org/802.11/dcn/11/11-11-0175-02- 00af-fcc-tvws-terminology.ppt Showmywhitespace.com http://spectrumbridge.com/whitespaces.aspx US Metro white space https://mentor.ieee.org/802.11/dcn/11/11-11-0499- 02-00af-us-metro-mhzpops.xls
802.11 WG is starting to grow again and 802.16 WG is deciding what to do next! 600 Note: “number of voters” 802.11 is a “lagging” indicator 802.15 802.16No. of voters before meeting 500 802.18 802.19 400 802.20 802.21 802.22 300 200 100 0 Jan-02 Oct-02 Jul-03 Mar-04 Dec-04Sep-05Jun-06 Mar-07 Dec-07Sep-08Jun-09 Mar-10 Dec-10Sep-11 Jun-12 Acknowledge Andrew Myles, Cisco WG meeting date Voting members – May „11