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Comments on Sub 1 GHz license-exempt operation

This presentation summarizes the comments received on the Sub 1 GHz license-exempt PAR & 5c, discussing issues with bands, confusion between TVWS and Sub 1 GHz license-exempt, interoperability with IEEE 802.15.4g, and more.

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Comments on Sub 1 GHz license-exempt operation

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  1. Comments on Sub 1 GHz license-exempt operation Authors: Date: 2010-04-26 David Halasz, Aclara

  2. 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

  3. 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

  4. 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

  5. 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

  6. 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. 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 David Halasz, Aclara

  7. 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

  8. 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

  9. 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

  10. 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

  11. 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

  12. Discuss bands in other countries Reference [1] David Halasz, Aclara

  13. Discuss minimum data rates David Halasz, Aclara

  14. Interoperability with IEEE 802.15.4g • Ask if there was any submission David Halasz, Aclara

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

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