PROBLEM TO BE SOLVED: To provide a communication system, communication device, and communication method that are capable of accurately acquiring information in which intervention of unauthorized relay on a communication path between communication devices is reflected.SOLUTION: A communication system 100 comprises a first communication device 200 and second communication device 300 that wirelessly communicate with each other. The first communication device 200 includes a response unit 261 that in response to wirelessly receiving a request signal from the second communication device 300, transmits a response signal. The second communication device 300 includes a related information acquisition unit 382 that executes, a plurality of times, confirmation communication including wirelessly transmitting the request signal and wirelessly receiving the response signal corresponding to the request signal to acquire related information showing information corresponding to relation between the number of times of executing the confirmation communication and an execution period in which the confirmation communication is executed the number of times of the execution.SELECTED DRAWING: Figure 1
【課題】通信装置間の通信路における不正な中継の介在を反映した情報を正確に取得できる通信システム、通信装置、及び通信方法を提供する。【解決手段】通信システム100は、無線により相互に通信する第1通信装置200と第2通信装置300とを備える。第1通信装置200の応答部261が、第2通信装置300から要求信号を無線により受信したことに応答して応答信号を送信する。第2通信装置300の関係情報取得部382が、要求信号を無線により送信することと要求信号に対応した応答信号を無線により受信することとを含む確認通信を複数回実行することにより、確認通信の実行回数と実行回数の確認通信が実行される実行期間との関係に対応した情報を示す関係情報を取得する。【選択図】図1
COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND COMMUNICATION METHOD
通信システム、通信装置、及び通信方法
2017-09-21
Patent
Electronic Resource
Japanese
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