过渡计划和过渡数据归档文件

The Department of Defense (DoD) has prepared the DoD 1755-1780 MHz Workbook (hereafter referredto as the Workbook) to provide potential bidders in the AWS-3 auction with information about potentialimpacts to AWS-3 frequency blocks and market areas as DoD incumbent users migrate, in most cases, toother frequency bands or other applications. It provides the refined Protection Zones for coordinationof AWS-3 base stations with incumbent DoD operations as specified in the Joint Public Notice, releasedby the Federal Communications Commission (FCC) and the National Telecommunications andInformation Administration (NTIA),announcing AWS-3 coordination details.1This adjunct “Read-Me”document is provided to help in the understanding and use of the Workbook. The Workbook may befound atwww.ntia.doc.gov/category/aws-3-transition. As explained in the Joint PN, sharing between AWS-3 auction winners and the incumbent federaloperations will occur via a coordination process that will take place during the transition. Transitiontimelines (i.e., the time it takes a DoD operation to migrate to another frequency or medium) varybetween operations and military Services. A limited number of operations will remain in the bandindefinitely. Many aspects of the incumbent spectrum uses involve sensitive, non-public informationthat is redacted in the publicly available Transition Plans. For example, almost all DoD frequencyassignments have restrictions on distribution which prevents their public release.The presentation ofthis information in the Workbook excludes critical RF parameters and usage characteristics such thatdistribution limitations can be honored. At the same time, the information is presented at a high levelof resolution (e.g., at the census tract level) in order to provide bidders additional information about theDoD incumbent use and coordination obligations to plan for the AWS-3 auction. The value of the Workbook comes from an understanding of how coordination will be implemented inthe AWS-3 frequency blocks to allow sharing during the transition period. All of the DoD frequencyassignments have an authorized point and radius or area of operation. Working groups associated withthe Commerce Spectrum Management Advisory Committee (CSMAC) performed first-cut sharingassessments between most affected DoD systems and expected AWS-3 commercial wirelesstechnologies – these assessments addressed both the potential for interference to federal systems fromAWS-3 transmitters and the potential for interference to AWS-3 receivers from federal transmitters.The results of these assessments were tabulated and retained to identify zones between DoD systemsand AWS-3 systems within which coordination would be required to avoid harmful interference in asharing environment. The CSMAC distances represent coordination distances, not exclusion zones. Thecoordination zones associated with DoD operations with valid frequency assignments are based on thesum of the authorized points and radii or area of operation and the coordination distances calculated for the DoD operations in question. Figure 1 illustrates the concept of a center location, authorized area ofoperation, and the inclusion of a coordination distance. Coordination zones for approximately 1400 DoD operations were determined and mapped into aGeographic Information System (GIS) application.2Files containing US census tracts were also mappedinto the GIS tool – approximately 75,000 census tracts. (As mentioned above, the use of census tractswas chosen to provide a high degree of fidelity in representing the impact of DoD operations ongeographic areas. A crosswalk of census tracts to FCC licensing areas is also provided atwww.ntia.doc.gov/category/aws-3-transition.) The GIS tool was used to determine the overlap of DoDcoordination zones and census tracts for each of the five 5 megahertz segments within the 1755-1780MHz band. Figure 2 shows one such intersection of a coordination area with census tracts. Censustracts totally or partially within a particular coordination zone are considered to be impacted by thatDoD system. Any one census tract may be impacted by more than one DoD system, as specific localareas typically support many types of DoD operations. Sharing during the transition period requirescoordination through the Defense Spectrum Organization (DSO) 1755-1780 MHz Band CoordinationPortal prior to deployment. The Workbook is a set of two Excel files comprised of spreadsheets for each of the 5 megahertzsegments within the 1755-1780 MHz band (i.e., 1755-1760 MHz, 1760-1765 MHz, . . . . , 1775-1780MHz). The two Excel files (DoD Workbook Tab1 and DoD Workbook Tab 2) correspond to the “Tab 1”and “Tab 2” discussion in theJoint PN.3Tab 1 provides information related to potential harmfulinterference from AWS-3 transmitters to DoD systems (ProtectDoD) and Tab 2 provides informationrelated to potential harmful interference from DoD transmitters to AWS-3 receivers (Protect Ind). TheTab 1 f