3450 3550兆赫存档文件

The Department of Defense (DoD) has prepared the DoD 3450-3550 MHz Workbook (hereafter referredto as the Workbook) to provide potential bidders in the upcoming auction for commercial flexible uselicensees with information about potential impacts to frequency blocks and market areas from DoDincumbent users. The Workbook allows the sharing of Cooperative Planning Areas (CPA) and PeriodicUse Areas (PUA) for coordination with incumbent DoD operations. This adjunct information file isprovided to help in the understanding and use of the Workbook. Many aspects of the incumbent spectrum uses involve sensitive, non-public information that is redactedfor public use. For example, almost all DoD frequency assignments have restrictions on distributionwhich prevents their public release.The presentation of this information in the Workbook excludescritical RF parameters and usage characteristics such that distribution limitations can be honored. Atthe same time, the information is presented at a high level of resolution (e.g., at the census tract level)in order to provide bidders additional information about the DoD incumbent use and coordinationobligations to plan for the auction. CPA and/or PUA for sites listed in NTIA Letter to FCC re 3450-3550 MHz1were determined and mappedinto a Geographic Information System (GIS) application.Figure 1below shows an example CPA/PUA(not an actual CPA/PUA) overlayed on a map with state borders. Files containing US census tractboundaries determined in 2010 were also mapped into the GIS tool – approximately 75,000 censustracts. The use of census tracts was chosen to provide a high degree of fidelity in representing theimpact of DoD operations on geographic areas.Figure 2below shows a selection of 2010 census tractsin the region of the example CPA/PUA.The GIS tool was used to determine the overlap of CPA/PUAand census tracts for each of the ten 10 MHz segments within the 3450-3550 MHz band.Figure 3showsa map of the impacted census tracts from the single, overlaying Example CPA/PUA. Any one censustract may be impacted by more than one CPA/PUA if regions overlap. The encumbered census tractsand CPA/PUA data was then exported into Microsoft Excel. The Workbook is a Microsoft Excel file containing the GIS data for each of the ten 10 MHz segmentswithin the 3450-3550 MHz band. Each 10MHz band is listed on a separate tab within the file. Each tabcontains a list of impacted census tracts denoted by its GEOID, the state associated with the census tractand the latitude/longitude coordinate of the center of the census tract. Two different CPA/PUA groupsare calculated based on 5G equipment assumptions provided below from the Letter to FCC reFacilitating Shared Use in the 3450-3550 MHz Band2. Group 1 is calculated for 100 meter tall commercialuse antenna towers and is highlighted in orange. Group 2 is calculated for 100 feet tall commercial useantenna towers and is highlighted in blue. The total number of encumbrances from each antennaheight is listed as well as the encumbrances from each individual CPA/PUA. Each tab contains anidentical list of census tracts, therefore some census tracts may have zero encumbrances for a selectedfrequency band tab. SeeTable 1for an example of a selection of the Workbook using fictionalized data.Table 2contains a description of the workbook column headings. The Workbook and the underlying data draws directly from the approved DoD transition plans andGovernment Master File records. However, it was prepared and processed by DoD and has not beenverified or validated by NTIA or the FCC. Additionally, this information release does not supersede anyrights and obligations specified by law, rule, or other NTIA or FCC action. The following are assumptions used by the for 5G equipment to calculate CPA/PUA:5G Base Station Transmitter Power Output as Effective Isotropic Radiated Power (EIRP)•Urban: 1640 Watts per Megahertz (W/MHz) •Non-Urban: 3280 W/MHz5G Base Station Receiver Characteristics •Interference Power Input Density o-35 dBm per meter squared (dBm/m2) or 0.01 Volts per meter (V/m)•Maximum Power Inputo+35 dBm/m2•1 dB Compression (P1dB)o-25 dBm for continuous wave signals referenced at antenna port