doc IEEE 802 11 -08 0437 r 1

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 TGy Overview Date: 2008 -03 -24 Authors: Submission 1 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 Abstract This submission summarizes the TGy amendment to IEEE 802. 11 -2007 P 802. 11 y 3650 -3700 MHz Operation in the USA Submission 2 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 TGy Report • The Contention-Based Protocol Study Group was started in March 2005, to examine the opportunity afforded by FCC Report and Order and Memorandum Opinion and Order (FCC 05 -56) http: //en. wikipedia. org/wiki/IEEE_802. 11 y • TGy started after March 2006 plenary, received 39 submissions, created 72 body pages of draft text, and completed third recirculation IEEE Sponsor Ballot • https: //mentor. ieee. org/802. 11/file/06/11 -06 -1023 -00000 y-proposal-tgy. ppt Submission 3 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 Amendments to standard 11 k Radio Measurement 11 r Fast Handover 11 y 3650 -3700 MHz Operation in the USA IEEE 802. 11 -2007™ + P 802. 11 k D 13. 0 + P 802. 11 r D 9. 0 + P 802. 11 y D 10. 0 1184 pages + 224 pages + 112 pages + 72 pages = 1592 body text pages Submission 4 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 11 y features (1) • Management/measurement tools to identify and resolve interference complaints among licensed operators – All transmission activity can be halted within 60 seconds by a licensed operator • Enabling signal – Beacon frame information element with registered site location and enablement indicators, that must be received over the air directly from the enabling STA – Registered site location allows those suffering interference to find operator whose station’s operation is causing the interference • Dependent STAs – licensed operators can control any dependent STA’s frequency, power, and operation/measurement activity – to allow low-power dependent STAs to communicate with a high-power enabling STA, enablement/deenablement may be tunneled by APs and other STAs, may be off channel/another band/Internet Submission 5 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 11 y features (2) • Clear Channel Assessment – Energy Detect – -72 d. Bm (20 MHz) / -75 d. Bm (10 MHz) / -78 d. Bm (5 MHz) – TPC and DFS apparatus (like 5 GHz) • Non-overlapping channel plan (like 5 GHz) – 20 MHz = 2 * 10 MHz = 4 * 5 MHz – Band edge channels not used by standard, in order to meet out-ofband emissions limits without severe transmit spectral masks • 4 msec Carrier Sense rule to increase sharing among STAs – No transmission longer than 4 msec (like Japan license-exempt) Submission 6 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 Metropolitan Areas Requiring Coordination with FSS and Government Sites FSS protection zones in blue Government protection zone in green Top 50 counties by population (2000 census) in red Many large metropolitan areas are restricted! Submission 7 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 On Licenses • Exclusive area license for frequency band – Exclusive path license (47 CFR 101 70/80/90 GHz, FCC 05 -45) • • Non-exclusive license (47 CFR 90) License exempt operation (47 CFR 15) Experimental license (limited area, limited deployment) “NOTHING IS IMPOSSIBLE IN THE LAW” - Clark Byse – License is an asset, and equipment can be capitalized • No license = no fees = no enforcement – No jurisdiction = no fines = no enforcement – (in California, 1 of every 3000 vehicles on the highways is a police car) – (in California, cities buy radar/laser for the CHP, and the courts keep the fines) Submission 8 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 802. 11 outdoors • Slot. Time was wrong in the base standard, but was corrected in 802. 11 -2007™ – In slotted Aloha, Slot. Time is the round-trip time between the most distant station pair, but in the old 802. 11 standard, Slot. Time was the one-way time between the most distant station pair – A 1 microsecond Slot. Time works to ~150 meters • Coverage Class allows distances to ~10 miles ( to 93 µS a. Air. Propagation. Time) • Because there are no adjustable preambles in the 802. 11 standard, outdoor products use non-standard adjustments to their radios Submission 9 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 802. 11 y CCA change • Adjustable Clear Channel Assessment threshold (Energy Detect) allows an operator to adjust the politeness of radios • Radios have improved since 802. 11 a became a standard in 1999, and can operate with lower received signal levels than -82 d. Bm (the lowest required signal for 6 Mbps operation) • 802. 11 y lowers the energy detect threshold by at least 10 d. B, and allows the operator to specify even lower thresholds to protect more distant stations. Submission 10 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 802. 11 Enabling STA • Is allowed higher power (up to 1 W/MHz), and can enable dependent stations (up to 40 m. W/MHz) • 802. 11 defines the enabling signal received directly from the enabling STA as 802. 11 Beacon frames with the GPS lat/lon of the enabling STA • Enabling signal can turn off, and all dependent stations will be disabled within 60 seconds • All other enablement messaging can be by tunneling / upper layers • Enabling STA commands Transmit power mitigation, operating channel, measurements on/off-channel Submission 11 Peter Ecclesine, Cisco Systems

doc. : IEEE 802. 11 -08/0437 r 1 March 2008 Two examples • A licensed operator installs a few enabling STAs to cover an oil field, then uses dependent stations at each pump or truck or rig. The IT department of the operator manages all the radios. • A fire station locates an enabling STA on its communications tower, and uses dependent stations on each fire truck and laptop. The incident commander communicates with the enabling STA using a Public Safety band radio, and controls use of the 3650 MHz band near the incident. Submission 12 Peter Ecclesine, Cisco Systems