A wireless communication device according to an embodiment of the present invention performs a half-duplex wireless communication through a relay station that conducts a relay operation of transmitting a received signal in a communication area, and includes a transmitting section, a receiving section, and a determining section. The transmitting section transmits a transmission signal including identification information identifying a wireless communication device. The receiving section receives a relay signal indicating a signal transmitted from a relay station by a relay operation that causes a delay whose length is equivalent to at least one transmission signal. The determining section determines that a wireless communication device itself exists in a communication area in a case where identification information for identifying a wireless communication device itself is included in a relay signal that has been received after transmission of a transmission signal is completed.