Radio communication system with flexible testing capabilities

PROBLEM TO BE SOLVED: To miniaturize a radio station without requiring test radio wave transmitting/receiving means for the radio station by installing a test radio wave transmitter/receiver which is freely movable and linking a subscriber terminal and a radio base station, which is connected to an error rate measuring instrument, through a radio line. SOLUTION: A test radio wave transmitter/receiver TTR2 is freely movably installed, separately from the subscriber terminal US2 and a radio base station BTS4. Further, the TTR2 is composed of therminal equipment 2a for enabling normal communication and a controller 2b for generating a response for test, while receiving an instruction from the terminal equipment 2a. The radio base station 3 is linked with the plural US3 and TTR2 through the radio line, performs transmission/reception and is connected with a base station controller BSC5 through a cable. At the time of testing, the BSC5 sends data for test to an error rate measuring instrument 7, compares the transmitted test data with data returned from the TTR2 and measures an error rate. Thus, the radio station can be miniaturized and made freely movable, without requiring any test radio wave transmitting/receiving means for the radio station, and the test can be executed which corresponds to the state of transmission/reception.