On June 2, NTIA and the FCC, through its Wireless Telecommunications Bureau, jointly issued a Public Notice that provides information for potential bidders in the upcoming 3.45 GHz Service auction and guidance to the ultimate 3.45 GHz Service licensees and the affected federal incumbents regarding coordination procedures for shared use of the 3.45 GHz band.
As consumer, industry, and government demand for 5G services and applications heats up, NTIA’s Institute for Telecommunication Sciences (ITS) is focused on finding ways to make the most efficient use of scarce spectrum resources. Many commercial providers have their eyes on so-called mid-band spectrum because it offers them the best combination of coverage, speed, and latency. However, many U.S. government departments and agencies, including the Department of Defense (DoD), operate radar and communications platforms important to the nation’s national security and defense in those bands. A few week ago, the skies over Colorado played host to ITS experiments that will contribute to developing solutions to enable dynamic spectrum sharing between commercial and government users.
Over the course of two hours, a U.S. Air Force high-power radar plane, operating in the 3 GHz spectrum band, repeatedly flew past the Table Mountain Radio Quiet Zone Advanced Communications Test site near Boulder. On the ground, ITS researchers collected data that will begin to shed light on how 5G cellular services might dynamically share spectrum with DoD radar systems. The high-power radar platform provides long range air surveillance; understanding how these system might interact with thousands of terrestrial 5G receivers and transmitters on the ground is essential to the long term viability of 5G networks. While the flight crew operated the radar system in a variety of modes, ITS engineers measured the radar signals reaching the ground.
As a result of the further collaborative efforts between NTIA, the Department of Defense (“DoD”), and the FCC, NTIA submitted a letter into the FCC Docket “Amendment of the Commission’s Rules with Regard to Facilitating Shared Use in the 3100-3550 MHz Band” providing spectrum management details of DoD’s Cooperative Planning Area (“CPA”) and Periodic Use Area (“PUA”) set forth in the Further Notice of Proposed Rulemaking (“FNPRM”). In addition, specific requirements for two of the CPAs, more details on Federal/non-Federal coordination procedures, and other information and views for the rec