| |
|
Citizens Broadband Radio Service (CBRS)
|
The U.S. FCC has opened the 3550-3700 MHz band for sharing under an innovative three-tiered architecture. The first tier is the incumbents, which consists mainly of the U.S. military for shipborne radars. There is also limited use of the band for fixed-satellite service (FSS) receive-only earth stations above 3625 MHz.
The second tier, created by the FCC, is the Priority Access Licenses (PALs). A Priority Access License consists of a 10 MHz authorization within a single county, and PALs were auctioned by the Commission in Auction 105, which raised more than $4.5 billion in net bids. PALs are limited to the 3550-3650 MHz portion of the band.
The third tier is General Authorized Access (GAA) users, who may operate across the entire band (3550-3700 MHz), but may not cause interference to PALs or to incumbent users.
The PAL and GAA tiers must be controlled by a centralized Spectrum Access System (SAS) that enforces interference policies. Several commercials SASs are in operation.
PAL and GAA operate under a Part 96 of the FCC's rules, titled the Citizens Broadband Radio Service(CBRS). CBRS devices are referred to as CBSDs (Citizens Broadband radio Service Devices).
The WISPs and utilities that occupied the 3650-3700 MHz band under Part 90 of the FCC's rules were required to transition to CBRS (Part 96) (GAA and/or PAL), a process that was completed by 2023.
|
Frequency Bands |
| Band | Use | Service11 | Table |
| 3550 - 3650 MHz | Citizens Broadband Radio Service (PAL and GAA) | Mobile | N |
| 3650 - 3700 MHz | Citizens Broadband Radio Service (GAA only) | Mobile | N |
|
|
|
|
|