1. doc.: IEEE 802.11-10/0204r2 Submission March 2010 David Halasz, AclaraSlide 1 Comments on Sub 1 GHz license-exempt operation Date: 2010-04-05 Authors:

2. doc.: IEEE 802.11-10/0204r2 Submission Abstract This presentation summarizes some of the comments received on the Sub 1 GHz license exempt PAR & 5c in submission 10/0001r5. March 2010 David Halasz, AclaraSlide 2

3. doc.: IEEE 802.11-10/0204r2 Submission Comments on Sub 1 GHz license-exempt The bands are not uniform across the world. Roaming users can cause issues. Confusion between TVWS and Sub 1 GHz license- exempt Issues with Annex I & J Difference between IEEE 802.15.4g Coexistance with IEEE 802.15.4g March 2010 David Halasz, AclaraSlide 3

4. doc.: IEEE 802.11-10/0204r2 Submission The bands are not uniform across the world. Roaming users can cause issues. Issue : A U.S. user roams to Europe. The user turns on the Sub 1 GHz wireless card and causes interference. Suggestion : Add text in section 5.2 of PAR to indicate above discussions are within scope. Note : World mode, IEEE 802.11d, can address this for mobile nodes. March 2010 David Halasz, AclaraSlide 4 5.2 Scope of Proposed Standard: This amendment defines standard operation and channelization of license-exempt frequency bands below 1 GHz for IEEE 802.11 networks while meeting legal requirements across regulatory domains.

5. doc.: IEEE 802.11-10/0204r2 Submission Confusion between TVWS and Sub 1 GHz license-exempt Issue A : Both PARs are concerned with Sub 1 GHz operation. However the rules are different. Suggestion : Add text to section 7.1 and/or 8.1 of PAR mentioning the rules differences. Note : TVWS PAR is 09/934. –https://mentor.ieee.org/802.11/dcn/09/11-09-0934-08-tvws-draft- par-and-5c.dochttps://mentor.ieee.org/802.11/dcn/09/11-09-0934-08-tvws-draft- par-and-5c.doc March 2010 David Halasz, AclaraSlide 5

6. doc.: IEEE 802.11-10/0204r2 Submission Confusion between TVWS and Sub 1 GHz license-exempt issue A cont. March 2010 David Halasz, AclaraSlide 6 7.1 Are there other standards or projects with a similar scope? Yes Explanation: IEEE P802.15 addresses one product segment of the new regulatory rules. Sponsor Organization: IEEE Project/Standard Number: P802.15.4g Project/Standard Date: 0000-00-00 Project/Standard Title: IEEE Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 15.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low Rate Wireless Personal Area Networks (WPANs) - Amendment: Physical Layer(PHY) Specifications for Low Data Rate Wireless Smart Metering Utility Networks Explanation: IEEE P802.11af addresses Television White Spaces, which are below 1 GHz. Sponsor Organization: IEEE Project/Standard Number: P802.11af Project/Standard Date: 0000-00-00 Project/Standard Title: Standard for Information Technology - Telecommunications and Information Exchange Between Systems - Local and Metropolitan Area Networks - Specific Requirements - Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications; Amendment: TV White Spaces Operation

7. doc.: IEEE 802.11-10/0204r2 Submission Confusion between TVWS and Sub 1 GHz license-exempt issue A cont. March 2010 David Halasz, AclaraSlide 7 8.1 Additional Explanatory Notes: (Item Number and Explanation) 7.1 Are there other standards or projects with a similar scope? P802.11af limits itself to the TV White Space. This PAR is for other license-exempt bands below 1 GHz.

8. doc.: IEEE 802.11-10/0204r2 Submission Confusion between TVWS and Sub 1 GHz license-exempt Issue B : Both PARs are concerned with Sub 1 GHz operation. Want to avoid completely different solutions. Suggestion : Work towards common solutions. Note : IEEE 802.11af has initial text. March 2010 David Halasz, AclaraSlide 8

9. doc.: IEEE 802.11-10/0204r2 Submission Issues with Annex I & J Issue A : Annex I/J doesn't cover all regulatory domains Issue B : IEEE 802.11 does not define regulatory domains. However implementations need this information. Issue C : For changes above and management purposes, regulatory classes may need an update. Suggestion : Handle above issues in TGmb Note : Submission in 10/210r6 approved in TGmb March 2010 David Halasz, AclaraSlide 9

10. doc.: IEEE 802.11-10/0204r2 Submission Difference between IEEE 802.15.4g Issue : Confusion on how this work is different than IEEE 802.15.4g Suggestion : Add text to 8.1 of PAR indicating IEEE 802.15.4g PAR limits data rate to less than 1 Mbit/s. The desire is for an IEEE 802.11 PHY that scales to higher data rates. March 2010 David Halasz, AclaraSlide 10 8.1 Additional Explanatory Notes: (Item Number and Explanation) 7.1 Are there other standards or projects with a similar scope? P802.15.4g limits itself to below 1 Mbit/s. This PAR is for IEEE 802.11 MAC and PHY that scale to higher data rates.

11. doc.: IEEE 802.11-10/0204r2 Submission Coexistance with IEEE 802.15.4g Issue : Want to avoid coexistance issues Suggestion : Coordinate with IEEE 802.15.4g on coexistance. Note A : In section 17.5.4.1 of 10/0001 has the following text, –The working group will create a CA document as part of the WG balloting process Note B : Currently, IEEE 802.15.4g has more than one PHY. So IEEE 802.15.4g should already be expecting coexistance work. March 2010 David Halasz, AclaraSlide 11

12. doc.: IEEE 802.11-10/0204r2 Submission References March 2010 David Halasz, AclaraSlide 12