Submission November 2008 Charles Cooper, dLRSlide 1 Preliminary White Space Availability IEEE P Wireless RANs Date: Authors: Notice: This document has been prepared to assist IEEE 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 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 Working Group 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 Chairhttp://standards.ieee.org/guides/bylaws/sb-bylaws.pdf Carl R. StevensonCarl R. Stevenson 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 Working Group. If you have questions, contact the IEEE Patent Committee Administrator at >

Submission November 2008 Charles Cooper, dLRSlide 2 Abstract The purpose of this analysis is to determine on a macro perspective, the number of UHF Channels available within the contiguous U.S. for (1) Fixed Point-to- Multipoint service like and (2) personal portable type of devices. At the time of this analysis, the specific FCC allocation Rules to protect incumbent users have not been released. Therefore, assumptions have been made by the author.

Submission November 2008 Charles Cooper, dLRSlide 3 Fixed Point-to-Multipoint White Space Allocation Analysis Availability Analysis based upon protecting Post-Transition DTV Full-Service Broadcast Stations Noise-Limited Contours. –Contours calculated using the standard FCC propagation curves. –Adjacent channel incumbent protection assumed – with the possible White Space Device to be located at a minimum distance of 1.05 times the contour distance. For example, if noise-limited contour extends 100 km, the “keep-out” distance is a minimum of 105 kilometers. –Co-Channel incumbent protection assumed – with the possible White Space Device to be located at a minimum distance of 1.5 times the contour distance. For example, if noise-limited contour extends 100 km, the “keep-out” distance is a minimum of 150 kilometers from the incumbent broadcaster. This assumed co-channel distance is likely greater than what will be permitted by FCC Rules – however, due to the amount of received interference, it is suspected that many White Space devices will have to be located further away from the co-channel contour to reduce the degree of interference received from the co-channel incumbent broadcaster.

Submission November 2008 Charles Cooper, dLRSlide 4

Submission November 2008 Charles Cooper, dLRSlide 5 Personal Portable White Space Allocation Analysis No operation within the incumbent co-channel contour + 5 miles –Low Powered Television/Class A/TV Translators Considered –Full Service Post-Transition Facilities –Co-Channel preclusion shown by red areas Adjacent channel contour protection noted by pink areas Contours calculated using the standard FCC propagation curves

Submission November 2008 Charles Cooper, dLRSlide 6 Channel 23 Personal/Portable Allocation Analysis

Submission November 2008 Charles Cooper, dLRSlide 7 Channel 32 Personal/Portable Allocation Analysis

Submission November 2008 Charles Cooper, dLRSlide 8 Channel 42 Personal/Portable Allocation Analysis

Submission November 2008 Charles Cooper, dLRSlide 9 Composite Channel Availability Allocation Analysis Considers UHF Channels A grid of 2 by 2 square kilometers Determines if a specific grid block is precluded by a co-channel station. –Preclusion defined as Noise-Limited contour of Full Service station/LPTV/TV Translator/Class A Contour + 5 miles Following map is color coded –Black cells less than 5 channels available –Red cells between 5 to 10 channels available –Blue cells between 10 to 15 channels available –Green cells between 15 to 20 channels available –Blank cells more than 20 channels available

Submission November 2008 Charles Cooper, dLRSlide 10 Composite Number of Channels (22 to 51)

Submission November 2008 Charles Cooper, dLRSlide 11 Interference Received Analysis 2 by 2 square kilometer grid If located within co-channel preclusion, not considered for service (red area) –Noise-Limited contour plus 5 miles Assumed Desired Personal/Portable Signal Level –-85 dBm Co-Channel Interference –15 dB Desired-to-Undesired Ratio Adjacent Channel Protection –-30 dB Desired-to-Undesired Ratio

Submission November 2008 Charles Cooper, dLRSlide 12 Interference Received Analysis Cont. At non-precluded cells then determine interference received based upon specified D/U ratios (shown by black dots) –Used Longley-Rice point-to-point signal propagation model used to calculate the field strength of “undesired” stations –No receiving antenna discrimination assumed. 0 dB receiving antenna gain assumed –Used (50,10) propagation statistics (location, time) for adjacent- channel and co-channel stations –RSS the cumulative received interference for co-channel and each adjacent channel station located within 200 km of studied cell RSS’ed separately for each channel

Submission November 2008 Charles Cooper, dLRSlide 13 Channel 23 Expanded Area (NE US) No Received Interference Considered

Submission November 2008 Charles Cooper, dLRSlide 14 Channel 23 Expanded Area (NE US) Received Interference Considered

Submission November 2008 Charles Cooper, dLRSlide 15 Channel 32 Expanded Area (NE US) No Received Interference Considered

Submission November 2008 Charles Cooper, dLRSlide 16 Channel 32 Expanded Area (NE US) Received Interference Considered

Submission November 2008 Charles Cooper, dLRSlide 17 Channel 42 Expanded Area (NE US) No Received Interference Considered

Submission November 2008 Charles Cooper, dLRSlide 18 Channel 42 Expanded Area (NE US) Received Interference Considered