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The Spectrum Needs of U.S. Space-Based Operations: An Inventory of Current and Projected Uses

July 09, 2021

The United States is a global leader in the development and deployment of advanced, space-based technologies. Yet there is relatively little public awareness of the scope and scale or the economic benefits of these space-based technologies and even less recognition of the core public resource needed to operate and support them: radio-frequency spectrum. This report aims to provide basic information that will help increase public understanding of the scope and value of these space-based operations and the importance of their access to spectrum.

NTIA Report: Incumbent Informing Capability (IIC) for Time-Based Spectrum Sharing

February 22, 2021
DiFrancisco, Michael, Drocella, Edward, Ransom, Paul, Cooper, Charles

The IIC is a mechanism for more reliably informing “new entrants” in a shared spectrum band when incumbent federal systems are operating in close proximity and thus need to be protected.  New entrant access to the spectrum would be controlled through an enhanced, near-real-time Spectrum Coordination System (SCS).  The IIC could replace extra layers of sharing techniques such as the environmental sensing capability (ESC), which presently is required by the Federal Communications Commission (FCC) for the Citizen Broadband Radio Service (CBRS) in the 3550-3700 MHz band.   

Second Annual Report on the Status of Spectrum Repurposing

January 07, 2021

The United States continues to build on its 5G leadership and is critically focused on repurposing radiofrequency spectrum – especially through investment in America’s mid-band spectrum. Our country leads the world in availability of high- and low-band spectrum for commercial wireless services. Now, as this Report highlights, the United States is making tremendous strides in repurposing important mid-band spectrum.

Assessment of Compatibility between Global Positioning System Receivers and Adjacent Band Base Station and User Equipment Transmitters

Report ID
December 07, 2020
Edward F. Drocella Jr., Cou-Way Wang, Nickolas LaSorte

This technical memorandum provides the results of a compatibility assessment between terrestrial GPS L1 coarse/acquisition (C/A) code receivers operating in the 1559-1610 MHz RNSS band and terrestrial operations in the 1526-1536 MHz, 1627.5 1637.5 MHz, and 1646.5-1656.5 MHz bands. The Interdepartment Radio Advisory Committee (IRAC) Technical Focus Group (TFG) assessed compatibility between different categories of GPS L1 C/A code receivers and the proposed terrestrial deployment by examining the degradation in carrier-to-noise density ratio (C/N0), loss-of-lock, position error, and increase in acquisition/reacquisition time for GPS receivers.

Keywords: electromagnetic compatibility (EMC); GPS; spectrum sharing; harmful interference; 1526-1536 MHz; 1627.5 1637.5 MHz; 1646.5-1656.5 MHz

NTIA Plan to Congress on Declassification and Clearances Related to the Communications Supply Chain Risk Information Partnership

November 18, 2020

The Secure and Trusted Communications Networks Act of 2019 requires NTIA to establish an information sharing program to ensure that small, rural providers have access to the supply chain risk information they need before they make an investment.  To meet this requirement, NTIA established the Communications Supply Chain Risk Information Partnership (C-SCRIP) in July 2020. Section 8 of the Act also requires NTIA within 180 days to submit a plan to the Committee on Energy and Commerce of the House of Representatives and the Committee on Commerce, Science, and Transportation of the Senate for (i) declassifying material, when feasible, to help share information regarding supply chain security risks with trusted providers of advanced communications service and trusted suppliers of communications equipment or services; and (ii) expediting and expanding the provision of security clearances to facilitate information sharing regarding supply chain security risks with trusted providers of advanced communications service and trusted suppliers of communications equipment or services.

Compatibility of Federal Systems Operating in the 5850-5925 MHz Band with Intelligent Transportation Systems and Unlicensed National Information Infrastructure Devices

Report ID
October 22, 2020
Edward Drocella, Yang Weng, Michael Ghorbanzadeh, Edison Juleau, Nickolas LaSorte

This Technical Report provides details about protection of federal operations in the 5.850-5.925 GHz (5.9 GHz) band from new operations considered by the Federal Communications Commission (FCC) as part of the agency’s comprehensive review intended to allow for the highest and best use of the band. As part of its ongoing effort to accommodate new commercial wireless services, the National Telecommunications and Information Administration (NTIA) worked with agencies that operate federal systems in the band to determine the protections needed to permit new commercial services to operate without causing impact to incumbent operations. To facilitate the FCC’s expeditious review of the record, NTIA already submitted to the FCC a letter setting forth the relevant protection requirements derived from the numerous details provided in this Technical Report.

NTIA and NHTSA Annual Report to Congress on Next Generation 911 Activities

September 24, 2020

We are pleased to submit this letter as the annual report on the activities of the Implementation Coordination Office (ICO) of the National Highway Traffic Safety Administration (NHTSA) and the National Telecommunications and Information Administration (NTIA), pursuant to Section 6503 of the Next Generation 911 Advancement Act of 2012, Pub. L. 112-96, Title VI, Subtitle E, codified at 47 U.S.C. § 942(a)(4).1 The ICO provides national leadership and coordination of stakeholder efforts to develop comprehensive and technologically enhanced 911 (E9l l) and next generation 911 (NG911) services.