PTCRB (PCS Type Certification Review Board) is an organization determining basic validation test standards for network operations and mobile terminals to assure global interoperability between mobile systems and also decides frequency bands used in North America. PTCRB-approved measurement systems and measurement items guarantee that the test procedure and measurement accuracy match the conditions required for mobile terminal validation tests.
Network operators are strongly requiring the deployment of approved LTE terminals, that requires testing to the RF (Test assuring mobile terminal TRx characteristics, performance, etc. , in compliance with 3GPP standards) and Protocol(Test for assuring that communications between mobile unit and base station meet 3GPP standards) conformance tests using PTCRB and GCF-approved test systems (Like PTCRB, GCF is an organization determining basic validation test standards for network operations and mobile terminals to assure global interoperability between mobile systems). This is to objectively validate that the quality of terminals meets the LTE standards, and to avoid problems when users are using the devices (e.g. poor signal reception, dropped connections, or slow download speeds).