RR-TAG Liaison Report March 2009 IEEE 802.18-802.11 Month Year doc.: IEEE 802.11-yy/xxxxr0 March 2009 RR-TAG Liaison Report March 2009 IEEE 802.18-802.11 Date: 2009-3-11 Authors: Rich Kennedy, OakTree Wireless John Doe, Some Company

IEEE 802.18 Work Plan Ofcom presentation on the Digital Dividend in the UK and Cognitive Radio Presentation on license exempt operation in the Netherland Antilles M.1450 approved by Excom Meet with TGz chair to discuss 5 GHz operation of DLS Met with 802.22 and 802.11 to finalize the Petition for Reconsideration; to be continued PM2

TVWS Petition for Reconsideration FCC 08-260 R&O on the unlicensed use of the White Space; published 2/17, comments due by 3/18 We have developed a petition for reconsideration to maximize the usability of this spectrum for Wi-Fi devices IEEE 802.22 has a similar petition for their cause Final petition must be from 802.18, so must be agreed to by both .11 and .22 Some 802.11 members developed a response to the .22 petition – 11-09/239r2 Would like to have full WG support in the negotiations

The Issues In agreement The contention A- Fixed devices (base stations) should be allowed to have multiple fixed client/slave devices B- Sensing for television signals should not be mandated by the Commission C- Fixed Base Station Height Should Be Based on HAAT Rather than AGL and not limited to 30m AGL The contention D- PSD Limits and Minimum Occupied Bandwidth Should Be Specified; and RF Mask Three sensing points

Situation 802.18 hosted the Friday March 6th teleconference discussing 22-09/26r0 and 11-09/239r2 802.22 is evolving their position in response to 11-09/239r2 See 22-09/26r1, which takes note of issues raised in 09/239r2 22-09/26 is evolving to become the 802.22 position

Sensing 802.11 believes that sensing requirement for personal portable devices limit product feasibility; challenging to battery powered devices that utilize power saving mechanisms “The sensing threshold for wireless microphones should be -107 dBm rather than -114 dBm” - requires significant battery power and time “Part 74 devices need to be sensed within 2 seconds, not 60 seconds” – Wake up from sleep mode, etc, makes this difficult “Synchronized quiet periods are necessary for incumbent sensing” – GPS clock undetectable indoors; others too unstable We prefer database control of access to spectrum

Motion IEEE 802.11 WG supports the comments of 11-09-0239-02-0wng-comments-on-802-22-input-to-08-260-petition-for-reconsideration as a formal input to the 802.18 RR-TAG in their development of a Petition for Reconsideration to the FCC TVWS R&O, FCC 08-260 Moved: Rich Kennedy Seconded: Peter Murray Vote: Yes 59 No 0 Abstain 12

The Results At the mid-weel plenary I asked the group to approve our input to the RR-TAG development of a petition for reconsideration to the FCC TVWS R&O In the PM1 session the group approved their final petition: 18-09/039/r4 Three major points of contention between 11 and 22 22 wanted synchronized quiet periods – rejected 22 wanted 2 sec maximum detect time for microphones – rejected 11 wanted to relieve personal portable devices of sensing requirement – rejected 11 wanted to allow active connection with the database to manage contention - accepted

References 18-09-0035-00-0000-ofcom-consultation-digital-dividend-cognitive-access 18-09-0036-00-0000-ofcom-presentation-awarding-the-digital-dividend-in-the-uk-and-europe 18-09-0037-00-0000-netherlands-letter-of-intent 18-09-0034-01-0000-declaration-of-intention 18-09-0020-04-0000-revision-of-recommendation-itu-r-m-1450 22-09-0026-04-0000-802-22-to-802-18-on-tvws-rando-doc 11-09-0239-02-0wng-comments-on-802-22-input-to-08-260-petition-for-reconsideration 18-09-0039-02-0000-petition-for-reconsideration-fcc-wsd-r-and-o-doc

Questions? Month Year doc.: IEEE 802.11-yy/xxxxr0 Rich Kennedy, OakTree Wireless John Doe, Some Company