A wireless base station device, comprising: a broadcast signal transmission unit configured to transmit a broadcast signal to a plurality of cells corresponding to the wireless base station device; a measurement signal communication unit configured to transmit to a first mobile terminal device existing in one of the plurality of cells a measurement instruction signal for instructing to perform a measurement of a wireless quality of the broadcast signal transmitted by the broadcast signal transmission unit and to receive a first measurement report signal for reporting the measurement of the wireless quality for the plurality of cells from the first mobile terminal device; a failure detection processing unit (216, 511) configured to detect, when a measurement report of a wireless quality for a first cell of the plurality of cells is not included in the first measurement report signal, a failure in a transmission function from the wireless base station device to the first cell in accordance with whether a second measurement report signal including a measurement report of a wireless quality for a second cell of the plurality of cells measured by a second mobile terminal device existing in a coverage area of the first cell is received by the measurement signal communication unit or not; and an alarm signal transmission unit configured to receive from the failure detection processing unit a notification of the first cell in which a failure is detected when the failure in the transmission function is detected by the failure detection processing unit and to transmit an alarm signal to notify a failure monitoring device of an occurrence of the failure in the transmission function. a broadcast signal transmission unit configured to transmit a broadcast signal to a plurality of cells corresponding to the wireless base station device; a measurement signal communication unit configured to transmit to a first mobile terminal device existing in one of the plurality of cells a measurement instruction signal for instructing to perform a measurement of a wireless quality of the broadcast signal transmitted by the broadcast signal transmission unit and to receive a first measurement report signal for reporting the measurement of the wireless quality for the plurality of cells from the first mobile terminal device; a failure detection processing unit (216, 511) configured to detect, when a measurement report of a wireless quality for a first cell of the plurality of cells is not included in the first measurement report signal, a failure in a transmission function from the wireless base station device to the first cell in accordance with whether a second measurement report signal including a measurement report of a wireless quality for a second cell of the plurality of cells measured by a second mobile terminal device existing in a coverage area of the first cell is received by the measurement signal communication unit or not; and an alarm signal transmission unit configured to receive from the failure detection processing unit a notification of the first cell in which a failure is detected when the failure in the transmission function is detected by the failure detection processing unit and to transmit an alarm signal to notify a failure monitoring device of an occurrence of the failure in the transmission function.