Patent attributes
In a wireless communications system, such as a 5G CBRS system, a Spectrum Access System (SAS) assigns portions of the (CBRS) spectrum to associated base stations (CBSDs). In some embodiments, a central spectrum-database server receives information about spectrum allocations made by two or more different SASs operated by different companies and tabulates that information in a combined spectrum database that each SAS can independently retrieve for use in allocating bandwidth to its CBSDs. In some implementations, the messages between each SAS and multiple associated CBSDs are transmitted via a domain proxy that snoops on multiple spectrum-allocation-related messages (e.g., spectrum grant/revocation messages and/or heartbeat messages) to gather the information to be transmitted to the server, where the information does not include any company- or network-sensitive information.