A communication apparatus includes: a transmission unit including a narrow interval data transmission unit which transmits a predetermined plurality of sets of data at an interval narrower than a predetermined interval, upon receipt of a narrow interval data transmission instruction; and a reception unit including: a transmission data reception unit which receives data of an application of a communication partner, and issuing a notification each time the data is received; a data transmission interval reception unit which receives a time interval of data transmission from the communication partner; a data non-arrival detection unit which considers data not to be arrived, in the case where the notification has not been issued from the transmission data reception unit for a predetermined time period longer than the time interval received by the data transmission interval reception unit; and a narrow interval data transmission instruction unit which transmits a narrow interval data transmission instruction to the communication partner, when the data non-arrival detection unit considers data not to be arrived.