您的浏览器禁用了JavaScript(一种计算机语言,用以实现您与网页的交互),请解除该禁用,或者联系我们。 [美国国家电信和信息管理局]:2016 - 发现报告

2016

报告封面

August 1, 2016 Institute for Telecommunication SciencesFocused ResearchDr. Keith Gremban, DirectorInstitute for Telecommunication Sciences (ITS) 2014ITS & NIST formCenter for AdvancedCommunications(CAC) Institute for Telecommunication SciencesPerform the research and engineering required to inform policySolve the telecommunications concerns of other Federal agencies•ITS receives over 50% of funding from other government agenciesElectromagnetic compatibility (EMC) and systems analysisPropagation measurement and modelingSpectrum monitoring/analysis/enforcement (Mike Cotton) ITS At-A-Glance(Eric Nelson) Institute for Telecommunication Sciences ●Radio propagation theoryMaintain and enhance standard RF propagation models:Aggregate modelsEMC analysis●RF measurementHigh-density RF measurementsInterference detection and mitigation ITS Assets Institute for Telecommunication Sciences 1800 acre mesa in Boulder County•Radio quiet zone•One of 2 in the United StatesFacilities include laboratorybuildings, turntable, antennas – Spectrum Demand Institute for Telecommunication Sciencesstrategic imperative Demand for radio frequency spectrum is explodingProliferation of wireless devicesIncreasing demand for bandwidth hungry data such as videoBut, spectrum is a finite resourceExclusive rights to spectrum is not sustainableSpectrum sharing is the new realityUnleashing the Wireless Broadband RevolutionPresidential Memorandum 2010Make available 500 megahertz of Federal/non-federal spectrum by2020Ensure no loss of critical existing and planned government capabilities Institute for Telecommunication Sciences Enablers of Spectrum Sharing Spectrum MonitoringDetermine the occupancy characteristics of selected spectral bandsInform the process of identifying and prioritizing bands for potentialsharingPropagation Measurement and ModelingMeasure RF propagation characteristics in various bands and ●●environmentsUpgrade RF propagation models with additional measurements RInternetRouter,Firewall,and Data RFCRRFCRSensor 2 Institute for Telecommunication SciencesSpectrum Monitoring Spectrum monitoring can providereal-time and historical data to:Validate occupancy/usage modelsField test coordination technologyFacilitate spectrum sharingInform planners and policy makersMeasured spectrum occupancy datais required for evaluation of spectrumsharing opportunities andenforcement of license agreements. Institute for Telecommunication Sciences RF Propagation Measurement and ModelingUnderstand and quantify real-worldpropagation effects, measure transmission loss due toclutter: terrain, structures, foliage, …Robust measurements informenhanced propagation modelse.g., clutter distributions enable moreaccurate predictions of path lossPropagation models predictRegions of acceptable receptionAreas of potential interference e.g. Challenge: Understand and Institute for Telecommunication SciencesAggregate Modeling, overall effects of large numbers of cellphones in operation Institute for Telecommunication Sciences Receiver IPC Simulation Advantages of simulation Institute for Telecommunication SciencesSummary ●ITS is organized around core technical capabilitiesRF TheoryRF MeasurementSystems Engineering and EvaluationSoftware Engineering●ITS research portfolioReviewed and updated annuallyTargets challenges 1-5+ years outFocuses on foundational research and tool development•e.g., science and tools required to support spectrum sharing decisionsITS is advancing the science and engineering to inform policydecisions and support deployment of new