The U.S. Federal Communications Commission has certified four Spectrum Access System (SAS) Administrators--CommScope, Federated Wireless, Google, and Sony--paving the way for full commercial operations for the 3.5 GHz Citizens Broadband Radio Service, a major implementation of spectrum sharing.
The Citizens Broadband Radio Service uses a three-tiered spectrum authorization framework to accommodate a variety of commercial uses on a shared basis with incumbent federal and non-federal users of the 150-MHz band.
Incumbent Access users include authorized federal and grandfathered Fixed Satellite Service users currently operating in the 3.5 GHz Band. These users, particularly including U.S. Navy radar operators, will be protected from harmful interference from Priority Access and General Authorized Access users.
The Priority Access tier licenses will be assigned using competitive bidding within the 3550-3650 MHz portion of the band.
Each PAL is defined as a non-renewable authorization to use a 10 megahertz channel in a single census tract for 10-year terms. Up to seven total PALs may be assigned in any given census tract with up to four PALs going to any single applicant. Applicants may acquire up to two consecutive PAL terms in any given license area during the first auction.
The General Authorized Access tier is licensed-by-rule to permit open, flexible access to the band for the widest possible group of potential users. General Authorized Access users are permitted to use any portion of the 3550-3700 MHz band not assigned to a higher tier user and may also operate opportunistically on unused Priority Access channels. Wi-Fi access is the model for GA access.
Many CBRS licenses are expected to be acquired by mobile operators for 5G use. But observers also expect that at least some licenses could be purchased by enterprises wanting to build private 5G networks with some assurance of quality.
Wireless internet service providers also might bid to acquire PAL licenses.
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