1. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 1 What is a CA document? Notice: This document has been prepared to assist IEEE 802.19. It is offered as a basis for discussion and is not binding on the contributing individual(s) or organization(s). The material in this document is subject to change in form and content after further study. The contributor(s) reserve(s) the right to add, amend or withdraw material contained herein. Release: The contributor grants a free, irrevocable license to the IEEE to incorporate material contained in this contribution, and any modifications thereof, in the creation of an IEEE Standards publication; to copyright in the IEEEs name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEEs sole discretion to permit others to reproduce in whole or in part the resulting IEEE Standards publication. The contributor also acknowledges and accepts that this contribution may be made public by IEEE 802.19. Patent Policy and Procedures: The contributor is familiar with the IEEE 802 Patent Policy and Procedures, including the statement "IEEE standards may include the known use of patent(s), including patent applications, provided the IEEE receives assurance from the patent holder or applicant with respect to patents essential for compliance with both mandatory and optional portions of the standard." Early disclosure to the TAG of patent information that might be relevant to the standard is essential to reduce the possibility for delays in the development process and increase the likelihood that the draft publication will be approved for publication. Please notify the Chair as early as possible, in written or electronic form, if patented technology (or technology under patent application) might be incorporated into a draft standard being developed within the IEEE 802.19 TAG. If you have questions, contact the IEEE Patent Committee Administrator at.http:// ieee802.org/guides/bylaws/sb-bylaws.pdfpatcom@ieee.org Date: 2005-03-14 Authors:

2. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 2 What is a CA Document? New 802 P&P on wireless coexistence Clarifications of the rules Purpose of a CA document What to include in a CA document Support from 802.19 TAG

3. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 3 New 802 P&P on Wireless Coexistence You can get the 802 policies and procedures (P&P) on the IEEE 802 web site http://grouper.ieee.org/groups/802/devdocs.html P&P Changes –A modification to the procedure for the five criteria –An additional procedure

4. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 4 New 802 P&P on Wireless Coexistence Addition to Technical Feasibility criteria within 5C d) Coexistence of 802 wireless standards specifying devices for unlicensed operation The working group proposing a wireless project is required to demonstrate Coexistence through the preparation of a Coexistence Assurance (CA) document unless it is not applicable. Working Group will create a CA document as part of the balloting process. Working Group will not create a CA document Reason it is not applicable: ___________________________________

5. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 5 New 802 P&P on Wireless Coexistence 22. Procedure for Coexistence Assurance If indicated in the five criteria, the wireless working group shall produce a coexistence assurance (CA) document in the process of preparing for working group letter ballot and sponsor ballot. The CA document shall accompany the draft on all wireless working group letter ballots. The CA document shall address coexistence with all relevant approved 802 wireless standards specifying devices for unlicensed operation. The working group should consider other specifications in their identified target band(s) in the CA document.

6. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 6 New 802 P&P on Wireless Coexistence 22. Procedure for Coexistence Assurance (cont.) The 802.19 TAG shall have one vote in working group letter ballots that include CA documents. As part of their ballot comments, the 802.19 TAG will verify the CA methodology was applied appropriately and reported correctly. The ballot group makes the determination on whether the coexistence necessary for the standard or amendment has been met if the ballot passes. A representative of the 802.19 TAG should vote in all wireless sponsor ballots that are in the scope of the 802.19 coexistence TAG.

7. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 7 Clarification of the Rules A CA document is not required for a standard specifying licensed operation The CA document is not required to consider coexistence with wireless systems outside of 802 (e.g. cordless phones). However, the task group is encouraged to consider coexistence with wireless systems outside of 802 The 802.19 TAG cannot veto approval of the ballot. The TAG only gets one vote The TAG will agree as a group on how to vote and what comments to make on the draft

8. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 8 Clarification of the Rules The voters in the WG letter ballot pool do not vote and comment on the CA document separately. –They vote on the draft. –Voters should consider the information in the CA document when voting on the draft The following are valid comments on the draft –The CA document is incomplete –The CA document is inaccurate –The CA document has not sufficiently demonstrated that the proposed standard coexists with current standards –Other

9. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 9 Clarification of the Rules There is no threshold of acceptable coexistence specified in the 802 P&P –The TG should select several metrics to evaluate the level of coexistence –The TG should choose to specify a threshold (depending upon application) –The voter should decide if the threshold selected by the TG is appropriate and whether it has been met, when voting Thresholds of acceptable levels of coexistence depend upon the applications.

10. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 10 Clarification of the Rules The CA document shall consider: –The effect of the proposed standard on current approved relevant 802 standards –The effect of current approved relevant 802 standards on the proposed standard The CA document should consider: –The effect of the proposed standard on other wireless specifications –The effect of other wireless specifications on the proposed standard

11. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 11 Clarification of the Rules The CA document is not required to consider, but is encouraged to consider: –The effect of the proposed standard on draft 802 standards –The effect of draft 802 standards on the proposed standard –The effect of unintentional emitters on the proposed standard

12. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 12 Clarification of the Rules What defines a relevant wireless standard? –Any standard that could have potential interference –Standards in the same frequency band –Standards in adjacent frequency bands The CA document should explain which standards were considered relevant and why

13. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 13 Purpose of the CA document The purpose of the CA document it to make information available to the ballot pool The members of the ballot pool are the technical experts who will determine how to use this information in their vote

14. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 14 What to include in a CA document List the other unlicensed 802 wireless standards that could have a potential mutual interference with the proposed standard Develop a model for the mutual interference between the proposed standard and all other potential mutual interferers The model can be broken down into several components

15. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 15 What to include in a CA document CA Model Components –Description of the usage scenarios for the wireless network based on each of these standards –Description of the data traffic on each wireless network –List of performance metrics for each of the two wireless networks –Description of typical geometry of the two wireless networks –Descriptions simulation/analysis method used –Results of simulation/analysis showing the performance metrics

16. doc.: IEEE 802.19-05/0006r0 Submission March 2005 Steve Shellhammer, Intel CorporationSlide 16 Support from the 802.19 TAG Developing a CA methodology document to describe what is required in a CA document –First complete draft expected in July (with support from the wireless working groups) Willing to review preliminary CA document before a ballot and give guidance Plan to develop a document listing all 802 wireless standards with a summary of appropriate technical specifications, to assist TG in determining which standards are relevant Collect all previous CA documents for reference