1. sg-whitespace-09/0029r1 Submission February 2009 Steve Shellhammer, QualcommSlide 1 Coexistence Scenarios Date: 2009-02-08 Authors: Notice: This document has been prepared to assist IEEE ECSG on TV White Space. 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 IEEE’s name any IEEE Standards publication even though it may include portions of this contribution; and at the IEEE’s 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. 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. If you have questions, contact the IEEE Patent Committee Administrator at.http:// ieee802.org/guides/bylaws/sb-bylaws.pdfpatcom@ieee.org

2. sg-whitespace-09/0029r1 Submission February 2009 Steve Shellhammer, QualcommSlide 2 Abstract This presentation presents a set of coexistence scenarios for the TV white space These scenarios are based on generic classes of networks. Specific coexistence scenarios can be developed if projects begin in specific working groups –The only current project is within 802.22 (WRAN)

3. sg-whitespace-09/0029r1 Submission February 2009 Steve Shellhammer, QualcommSlide 3 FCC’s Classes of Devices Fixed –Fixed outdoor antenna 10-30 meters above ground –Geo-location and Internet access Portable Mode I –Enabled from either a Fixed or Portable Mode II device –“Client Device” Portable Mode II –Geo-location and Internet access –“Access Point” * Using the shorter term “portable” instead of the FCC term “personal/portable”

4. sg-whitespace-09/0029r1 Submission February 2009 Steve Shellhammer, QualcommSlide 4 IEEE 802 Classes of Networks in TV White Space Some of the following networks may ultimately operate in the TV white space WRAN –Fixed-to-Fixed WMAN –Fixed-to-Portable WLAN –Portable-to-portable WPAN –Portable-to-portable The “traditional” WPAN topology may not apply since one node must have direct Internet access

5. sg-whitespace-09/0029r1 Submission February 2009 Steve Shellhammer, QualcommSlide 5 Network Class Definitions in this Document WRAN –Fixed outdoor base station serving fixed clients (e.g. 802.22) WMAN –Fixed outdoor base station serving portable (Mode 1) clients Could include 802.11 and 802.16 type networks WLAN –Portable (Mode II) Access Point (AP) serving portable (Mode I) clients –AP must have Internet access and geo-location Could include 802.11 and possibly 802.15 type networks

6. sg-whitespace-09/0029r1 Submission February 2009 Steve Shellhammer, QualcommSlide 6 A Few Coexistence Scenarios Scenario Limited to Geometry and Class of Network Coexistence Scenario Network ANetwork B 1WRANWLAN 2WMANWLAN 3

7. sg-whitespace-09/0029r1 Submission February 2009 Steve Shellhammer, QualcommSlide 7 Coexistence Scenarios 1 and 2

8. sg-whitespace-09/0029r1 Submission February 2009 Steve Shellhammer, QualcommSlide 8 Coexistence Scenario 3

9. sg-whitespace-09/0029r1 Submission February 2009 Steve Shellhammer, QualcommSlide 9 Comments The number of available TV channels varies, depending upon the location The number of channels that are available may also vary with time Which channels are available also varies in both space and time In many cases the number of channels is insufficient to permit each WRAN/WMAN/WLAN “cell” to have its own channel Need to develop methods to allow sharing of the available set of channels