Design and Implementation of a SAS Conformance Test Tool for 5G Citizens Broadband Radio Service (CBRS)

With 5G deployment, the enhanced broadband services and massive Internet of Things (IoT) devices requires larger bandwidth. To response this requirement, the US government proposes a Citizens Broadband Radio Service (CBRS). The CBRS spectrum contains a 150 MHz band ranging from 3550 MHz to 3700 MHz. Through spectrum sharing, mobile operators can utilize the CBRS spectrum to provide 5G mobile broadband services (AR/VR) or IoT services. The Spectrum Access Server (SAS) is one of the most important components in CBRS. The SAS manages the requests from the CBRS devices (CBSD) and assigns the CBRS spectrum to the authorized CBSDs. To verify whether the SAS development can conform to the CBRS standards, this paper develop a conformance test tool to examine the CBRS interface and operation of SAS.