Comments on Sub 1 GHz license-exempt operation Month Year doc.: IEEE 802.11-10/0204r3 April 2010 Comments on Sub 1 GHz license-exempt operation Date: 2010-04-26 Authors: David Halasz, Aclara David Halasz, Aclara

Month Year doc.: IEEE 802.11-10/0204r3 April 2010 Abstract This presentation summarizes some of the comments received on the Sub 1 GHz license exempt PAR & 5c in submission 10/0001r5. David Halasz, Aclara David Halasz, Aclara

Comments on Sub 1 GHz license-exempt April 2010 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 Discuss bands in other countries Discuss minimum data rates Interoperability with IEEE 802.15.4g David Halasz, Aclara

April 2010 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. 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. David Halasz, Aclara

Confusion between TVWS and Sub 1 GHz license-exempt April 2010 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.doc David Halasz, Aclara

Confusion between TVWS and Sub 1 GHz license-exempt issue A cont. April 2010 Confusion between TVWS and Sub 1 GHz license-exempt issue A cont. 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. Project/Standard Number: P802.11af 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 David Halasz, Aclara

Confusion between TVWS and Sub 1 GHz license-exempt issue A cont. April 2010 Confusion between TVWS and Sub 1 GHz license-exempt issue A cont. 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. David Halasz, Aclara

Confusion between TVWS and Sub 1 GHz license-exempt April 2010 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. David Halasz, Aclara

April 2010 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 David Halasz, Aclara

Difference between IEEE 802.15.4g April 2010 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. 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. David Halasz, Aclara

Coexistance with IEEE 802.15.4g April 2010 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. David Halasz, Aclara

Discuss bands in other countries April 2010 Discuss bands in other countries Frequency band in MHz Government 400 - 433 1 MHz in Japan 470 - 510 China 863 - 870 Europe 902 - 928 U.S. 950 - 956 Japan Reference [1] David Halasz, Aclara

Discuss minimum data rates April 2010 Discuss minimum data rates Channel Width Clocking Data rates in Mbits/S 20 MHz 1 54, 48, 36, 24, 18, 12, 9, 6 10 MHz 1/2 27, 24, 18, 12, 9, 6, 4.5, 3 5 MHz ¼ 13.5, 12, 9, 6, 4.5, 3, 2.25, 1.5 2.5 MHz 1/8 6.7, 6, 4.5, 3, 2.25, 1.5, 1.1, .75 1.25 MHz 1/16 3.4, 3, 2.3, 1.5, 1.1, .8, .6, .375 David Halasz, Aclara

Interoperability with IEEE 802.15.4g April 2010 Interoperability with IEEE 802.15.4g Ask if there was any submission David Halasz, Aclara

April 2010 References 1) 15-09-0075-08-0004g TG4g PHY Technical Parameters Document (Beecher, Rolfe) David Halasz, Aclara