A baseband circuit that receives, from a RFIC, and being configured to process, a signal including a plurality of synchronization signal blocks generated in a neighbor cell and a signal including radio resource control parameters generated in a serving cell, includes: a storage; a controller configured to write/read data to/from the storage; and a signal processor controlled by the controller, wherein the controller sets a number of measurement target SSBs based on the RRC parameters, wherein the signal processor checks a validity of the set number of SSBs, and the controller stores valid SSB information in the storage based on the checking result, verifies a number of valid SSBs based on the stored valid SSB information, and controls the signal processor or invalidates the neighbor cell so that the signal processor measures reference signal received power of the neighbor cell based on a verification result.