The Federal Communications Commission (FCC) is advancing its efforts to clarify and enforce rules for sharing the 37 GHz spectrum band. This initiative aims to promote various applications like wireless backhaul, broadband, and IoT services while enhancing the capacity of mobile networks.
For years, the FCC has been laying the groundwork for a system of coordinated sharing in the 37 GHz band. The aim is to enable both fixed and mobile terrestrial operations within this spectrum. Portions of the band are also designated for space-to-Earth communications and fixed satellite services. Originally, although the rules were first adopted in 2016, exclusive licensing requests were not entertained, delaying framework finalizations until now.
Identified within the National Spectrum Strategy, the 37 GHz band is seen as a crucial part of unlocking additional spectrum for communication. In late 2024, the Department of Defense and the National Telecommunications and Information Administration (NTIA) proposed a coordination framework, which the FCC has now adopted. This framework allows priority access for the Department of Defense at 37-37.2 GHz, and establishes “co-equal access” from 37.2-37.6 GHz for both federal and non-federal users.
The report accompanying these new rules emphasizes the importance of stricter out-of-band emission limits, safeguarding passive receivers in adjacent airwaves. A historical note reveals the upper 37 GHz band, ranging from 37.6-38.6 GHz, featured in the millimeter-wave spectrum auction by the FCC in 2019.
“We are once again exploring creative ways the FCC could unleash wireless innovation in this underutilized swath of spectrum,” said FCC Chairman Brendan Carr. According to Carr, the lack of clarity regarding shared use has been a barrier for investments. He emphasized that the new licensing framework could unlock 600 MHz of spectrum, initiating a wave of innovation and growth.
Support also comes from FCC Commissioner Geoffrey Starks, who underscores the importance of leaving no stone unturned in providing new spectrum opportunities that can benefit American consumers.
The freshly minted rules demand that users obtain a “nationwide, non-exclusive license.” They must then coordinate and register their site specifics individually. Furthermore, registered sites must be operational within a year.
The FCC plans to solicit public comments on several key topics. These include whether clutter should be considered in coordination processes, the potential development of an automated portal, and exploring future dynamic spectrum mechanisms.
