 of users: Incumbent users can retain the rights to use the band for military and Wireless Internet Service Provider purposes. WISPs will continue to have incumbent access to the 3650-3700 MHz band under the terms that are currently in place, with no modifications needed to deployed equipment. Priority Access Licensed (PAL) users (yellow) are allocated in the 3550-3650 MHz spectrum. Spectrum auction is done on a per-county basis ( ~ 3200 in the United States). 3550 MHz 3600 MHz 3650 MHz 3700 MHz Federal Radiolocation (occasional, primarily coastal) Incumbent FSS Rx-only Earth Stations Incumbent Wireless Priority Access License (PAL) (<7 X 10MHz) Broadband General Authorized Access (<80MHz, subject to incumbent) 3GPP N48 FIGURE 1-5 CBRS spectrum options. Chapter 1 Open radio access network overview 11 In each market, there will be 7 X 10 MHz TDD PALs, with a maximum of four channels assigned per licensee. PAL users will mostly drive deployments of public networks. General Authorized Access (GAA) (green). All other users can register with a spectrum allocation system (SAS) when SAS determines that the spectrum is not in use by incumbent or PAL users with higher access priority. Channels throughout the overall band (3550-3700 MHz) are available for GAA: access to 70 MHz, which is shared with PAL users and subject to availability (PAL users have priority over GAA users), and access to the remaining 80 MHz is reserved to GAA access (but PAL users can also use this part of the band under the GAA provisions). GAA use requires spectrum sharing using coexistence techniques (see next). GAAs will mostly be used for private networks. This new regulation creates a deployment framework for 4G and 5G in this band which was previously underutilized. Spectrum allocation system and related components The SAS (Fig. 1-6) is an automated frequency coordinator that coordinates all radio equip- ment that operate in the CBRS band. There are currently four SAS Administrators: CommScope, Federated Wireless, Google, and Sony. SAS Administr