1. doc.: IEEE 802.19-09/0045r0 Submission July 2009 Fanny Mlinarsky, Mimi TamSlide 1 Need for Coexistence Certification Testing? 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 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 802.19. 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: 2009-07-13 Authors: NameCompanyAddressPhoneE-mail Fanny MlinarskyoctoScope, Inc. 225 Cedar Hill Street, Suite 200 Marlboro, MA 01752 USA +1.978.376.5841 fm@octoscope.com Mimi TamoctoScope, Inc. 225 Cedar Hill Street, Suite 200 Marlboro, MA 01752 USA +1.978.376.5841 mimi.tam@octoscope.com

2. doc.: IEEE 802.19-09/0045r0 Submission July 2009 Fanny Mlinarsky, Mimi Tam Slide 2 Abstract This contribution poses a question to the group about the need for coexistence certification testing, particularly since increasing number of 802 and non-802 wireless services now need to share the airwaves under new FCC regulations.

3. doc.: IEEE 802.19-09/0045r0 Submission New FCC Regulations, New Rules of Coexistence July 2009 Fanny Mlinarsky, Mimi TamSlide 3 New FCC regulations (White Spaces, 3650 to 3700 MHz contention band) force new coexistence standards and architectures: –802.11y –802.16h –IEEE P1900.4a, an amendment to 1900.4, “Standard for Architectural Building Blocks Enabling Network-Device Distributed Decision Making for Optimized Radio Resource Usage in Heterogeneous Wireless Access Networks - Amendment: Architecture and Interfaces for Dynamic Spectrum Access Networks in White Space Frequency Bands” Coexistence standards are diverse, complex and intertwined, so how do we assure peaceful coexistence? Do we need to verify, via a formal process, interoperability and coexistence of WSDs with other IEEE 802 wireless services, with broadcasting services, wireless microphones, etc.?

4. doc.: IEEE 802.19-09/0045r0 Submission Test Organizations and Industry Alliances July 2009 Fanny Mlinarsky, Mimi TamSlide 4 Test organizations, such as the Wi-Fi Alliance, the WiMAX Forum, ETSI and LSTI* typically focus on testing products for compliance and interoperability for their specific industries. Coexistence testing across different standards in the bands recently opened by the FCC may be a new concept. *LSTI = LTE/SAE Trial Initiative

5. doc.: IEEE 802.19-09/0045r0 Submission Types of Coexistence Testing July 2009 Fanny Mlinarsky, Mimi TamSlide 5 Functional and protocol testing –Device tested against a golden reference (i.e. base station against a golden client & vice versa) Interoperability testing –Device tested in a test bed that incorporates other devices configured to emulate common coexistence scenarios Emissions and ACLR testing –Environmental chamber setup with test antennas Is there a need for a WS coexistence alliance focused on ensuring 802.19 compliance? Acceptable user experience? FCC compliance?

6. doc.: IEEE 802.19-09/0045r0 Submission July 2009 Slide 6 Conclusion Coexistence protocols for heterogeneous devices in TV White Spaces are complex and new products are unlikely to work perfectly when released, creating bad first impressions with the users and thus jeopardizing the success of new services. Thorough testing is the only way to guarantee services will coexist in an orderly manner, providing acceptable user experience. Fanny Mlinarsky, Mimi Tam