Communication device, the communication partner identification information specific way, reply information transmission method and program

摘要

A communication device for communicating with a communication partner includes: a storage means for storing answer information corresponding to prescribed query information; a transmission means for broadcast-transmitting the prescribed query information; a receiving means for receiving reply information that includes both response information corresponding to the prescribed query information, and identification information for use in communication and belonging to the source of transmission of the response information; and a control means for identifying identification information for use in communication and belonging to the source of transmission of the response information as the identification information for use in communication and belonging to a communication partner, when there is a match between the response information and the answer information.