A radio communication device comprising: a control unit that controls to prepare for data loss during radio communication of transmission data; a transmission unit that transmits the transmission data by radio to another radio communication device according to the control of the control unit; a reception unit that receives a radio signal transmitted from the other radio communication device; a measurement unit adapted to measure a field intensity of the radio signal received by the reception unit; and an estimation unit adapted to estimate a distance between the radio communication device and the other radio communication device based on the field intensity of a radio signal; whereby the control unit performs said control according to the distance estimation result; the radio communication device being characterized in that: the measurement unit is further adapted to measure an associated noise component of the radio signal received by the reception unit; the radio communication device further comprises a judgment unit adapted to judge whether the radio signal received by the reception unit satisfies a predefined requirement regarding the noise component; the estimation unit is adapted to estimate the distance between the radio communication device and the other radio communication device based on the field intensity of a radio signal which is judged to satisfy the predefined requirement regarding the noise component by the judgment unit among radio signals received from the other radio communication device; and the judgment unit is adapted to judge that the radio signal satisfies the predefined requirement regarding the noise component when the noise component is greater than a lower limit set value and lower than an upper limit set value. a control unit that controls to prepare for data loss during radio communication of transmission data; a transmission unit that transmits the transmission data by radio to another radio communication device according to the control of the control unit; a reception unit that receives a radio signal transmitted from the other radio communication device; a measurement unit adapted to measure a field intensity of the radio signal received by the reception unit; and an estimation unit adapted to estimate a distance between the radio communication device and the other radio communication device based on the field intensity of a radio signal; the measurement unit is further adapted to measure an associated noise component of the radio signal received by the reception unit; the radio communication device further comprises a judgment unit adapted to judge whether the radio signal received by the reception unit satisfies a predefined requirement regarding the noise component; the estimation unit is adapted to estimate the distance between the radio communication device and the other radio communication device based on the field intensity of a radio signal which is judged to satisfy the predefined requirement regarding the noise component by the judgment unit among radio signals received from the other radio communication device; and the judgment unit is adapted to judge that the radio signal satisfies the predefined requirement regarding the noise component when the noise component is greater than a lower limit set value and lower than an upper limit set value.