Announcement from the FCC…
The Federal Communications Commission today took critical step toward releasing a large swath of mid-band spectrum for America’s innovators when it voted to propose rules for 5G and 6G services in the Upper C-band (3.98-4.2 GHz).
This proceeding will examine a range of options for the Upper C-band, including auctioning up to 180megahertz, with the ultimate goal of maximizing the amount of spectrum for next-gen wirelesservices as generational aviation safety upgrades occur in the adjacent band.
Today’s item represents a milestone in implementing the spectrum provisions of the One Big Beautiful Bill Act. That legislation requires the FCC to complete a system of competitive bidding for at least 100 megahertz in the Upper C-band no later than July 2027.
To meet that deadline, the Commission proposes to leverage its highly successful framework from the first C-band proceeding. In 2020, the Commission auctioned 280 megahertz in the lower portion of the C-band (3.7-3.98 GHz) for flexible wireless use. That auction brought enhanced 5G to countless communities, accelerated new builds, and enabled game-changing competitive offerings for in-home broadband.
Today’s Notice of Proposed Rulemaking seeks comment on how to accommodate incumbent satellite users and other services presently in the Upper C-band. It also explores ways to promote co-existence with adjacent band radio altimeters, along with a range of related technical issues. The Notice reflects input and coordination from the FCC’s federal partners, including the FAA and NTIA.
The FCC kickstarted this initiative in February 2025 when it adopted a Notice of Inquiry that explored ways to make more intensive use of the Upper C-band.
Action by the Commission November 20, 2025 by Notice of Proposed Rulemaking (FCC 25-78)
Chairman Carr, Commissioners Gomez and Trusty approving and issuing separate statements.
GN Docket No. 25-59
