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RFC on Geographic Contour Calculation Guidelines

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RFC on Geographic Contour Calculation Guidelines DSA / White Space Interoperability Work Group Geographic Contour Request for Comment WINNF-11-RFI-0016-V1.0.0 November 6, 2011 VIA ELECTRONIC FILING Marlene H. Dortch, Secretary Federal Communications Commission 445 Twelfth Street, S.W. Washington, DC 20554 RE: ET Docket No. 04-186 Unlicensed Operation in the TV Broadcast Bands Ex Parte Presentation Dear Ms. Dortch: The DSA / White Space Interoperability Work Group (“Group”), operating within the Wireless Innovation Forum, represents over 50 industry experts from more than 40 companies involved in all aspects of wireless technologies. Recently the Group approved the attached document, Geographic Contour Calculation Guidelines, as a draft guideline for White Space operations and, respectfully requests the Commission’s advice, input, guidance and commentary on the document to assure that its interpretations and intentions match those of the Commission. The Group is also requests the Commission use this document as a basis to clarify the Rules where necessary and, where sufficient divergence of interpretation or implementation may exist, to issue any declaratory rulings the Commission may find necessary to ensure a transparent, standardized and interoperable White Space ecosystem. On behalf of the DSA / White Space Interoperability Work Group Chairman /s/ Jesse Caulfield, President Key Bridge Global LLC ATTACHMENT BEGINS ON THE FOLLOWING PAGE Implementation Standard for White Space Administration Geographic Contour Calculation Guidelines White Space Contour Calculation Guidelines Working Document WINNF-11-S-0015 Version V0.2.0 6 November 2011 Copyright © 2011 The Software Defined Radio Forum Inc. - All Rights Reserved DSA / White Space Interoperability Work Group Geographic Contour Calculation Guidelines WINNF-11-S-0015-V0.2.0 TERMS, CONDITIONS & NOTICES This document has been prepared by the DSA/White Space Interoperability Work Group to assist The Software Defined Radio Forum Inc. (or its successors or assigns, hereafter “the Forum”). It may be amended or withdrawn at a later time and it is not binding on any member of the Forum or of the DSA/White Space Interoperability Work Group. Contributors to this document that have submitted copyrighted materials (the Submission) to the Forum for use in this document retain copyright ownership of their original work, while at the same time granting the Forum a non-exclusive, irrevocable, worldwide, perpetual, royalty-free license under the Submitter’s copyrights in the Submission to reproduce, distribute, publish, display, perform, and create derivative works of the Submission based on that original work for the purpose of developing this document under the Forum's own copyright. Permission is granted to the Forum’s participants to copy any portion of this document for legitimate purposes of the Forum. Copying for monetary gain or for other non-Forum related purposes is prohibited. THIS DOCUMENT IS BEING OFFERED WITHOUT ANY WARRANTY WHATSOEVER, AND IN PARTICULAR, ANY WARRANTY OF NON-INFRINGEMENT IS EXPRESSLY DISCLAIMED. ANY USE OF THIS SPECIFICATION SHALL BE MADE ENTIRELY AT THE IMPLEMENTER'S OWN RISK, AND NEITHER THE FORUM, NOR ANY OF ITS MEMBERS OR SUBMITTERS, SHALL HAVE ANY LIABILITY WHATSOEVER TO ANY IMPLEMENTER OR THIRD PARTY FOR ANY DAMAGES OF ANY NATURE WHATSOEVER, DIRECTLY OR INDIRECTLY, ARISING FROM THE USE OF THIS DOCUMENT. Recipients of this document are requested to submit, with their comments, notification of any relevant patent claims or other intellectual property rights of which they may be aware that might be infringed by any implementation of the specification set forth in this document, and to provide supporting documentation. This document was developed following the Forum's policy on restricted or controlled information (Policy 009) to ensure that that the document can be shared openly with other member organizations around the world. Additional Information on this policy can be found here: http://www.wirelessinnovation.org/page/Policies_and_Procedures Although this document contains no restricted or controlled information, the specific implementation of concepts contain herein may be controlled under the laws of the country of origin for that implementation. Readers are encouraged, therefore, to consult with a cognizant authority prior to any further development. Wireless Innovation Forum ™ and SDR Forum ™ are trademarks of the Software Defined Radio Forum Inc. Copyright © 2011 The Software Defined Radio Forum Inc. Page i All Rights Reserved DSA / White Space Interoperability Work Group Geographic Contour Calculation Guidelines WINNF-11-S-0015-V0.2.0 Table of Contents TERMS, CONDITIONS & NOTICES ........................................................................................ i Table of Contents ....................................................................................................................... ii Contributors .............................................................................................................................. iii 1. Executive Summary .............................................................................................................1 2. Introduction .........................................................................................................................2 3. Geographic Separation for Individual Services .....................................................................3 3.1. Broadcast Television Service ........................................................................................3 3.2. TV Translator, LPTV and MVPD Receive Site plus Fixed Broadcast Auxiliary Service (BAS) Links .......................................................................................................................... 15 3.3. PLMRS / CMRS Operations ....................................................................................... 18 3.4. Offshore Radiotelephone service ................................................................................. 21 3.5. Low power auxiliary services, including wireless microphones ................................... 23 3.6. Border Areas near Canada and Mexico ....................................................................... 26 3.7. Radio Astronomy Services .......................................................................................... 28 3.8. DTV Distributed transmission systems ........................................................................ 30 4. Standard Equations for Calculating Geographic Values ...................................................... 32 4.1. FCC Distance Computations ....................................................................................... 32 4.2. Course angle between two points ................................................................................ 34 4.3. The Haversine and Vincenty formulae ........................................................................ 35 4.4. Vincenty ‘Direct’ formula ........................................................................................... 39 4.5. Alternate to Vicenty Direct formula ............................................................................ 40 4.6. Intermediate points on a great circle ............................................................................ 41 Copyright © 2011 The Software Defined Radio Forum Inc. Page ii All Rights Reserved DSA / White Space Interoperability Work Group Geographic Contour Calculation Guidelines WINNF-11-S-0015-V0.2.0 Contributors This document is based upon and derived from an original input contribution provided by Key Bridge Global LLC. It has been greatly improved by the generous contributions, corrections and edits provided by: Peter Cook Hypres Inc Jesse Caulfield Key Bridge Global LLC Peter Moncure RadioSoft Inc. Copyright © 2011 The Software Defined Radio Forum Inc. Page iii All Rights Reserved DSA / White Space Interoperability Work Group Geographic Contour Calculation Guidelines WINNF-11-S-0015-V0.2.0 Geographic Contour Calculation Guidelines 1. Executive Summary In the United States there are areas where spectrum allocated to TV broadcast is not fully utilized, and secondary use of this spectrum has been authorized by the FCC under Part-15 Rules, wherein one or more white space administrators (herein “Database” or, synonymously, “Administrator”) provide available spectrum information to low-powered transmitters (also called white space devices or “WSDs”) to ensure that primary spectrum users and services do not receive interference. 1 In the white space rules the Federal Communications Commission addresses protected services from the context of two large categories: Those services already registered with the Commission and Those services not registered with the Commission but otherwise entitled to some form of protection This document is intended to provide best practice and implementation guidelines necessary to consistently implement geographic separation (and interference avoidance) of the various primary services identified in the white space Rules. Accordingly, this document provides a technical assessment of the various elements and statue requirements, analysis of methods, techniques and data identified by the statue, and instruction for implementation. Notes of Importance: This document is an implementation guideline based upon Regulation. Where there may be room for interpretation or discretion is explicitly granted by Regulation the authors have attempted to enumerate possible options, weigh their cost and
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