To provide a wireless road-side machine, a traffic communication system, and a traffic communication method that can properly detect antenna abnormality even when the wireless road-side machine has only one antenna.SOLUTION: A wireless road-side machine in one embodiment of the present invention is a wireless road-side machine 100 that performs road-vehicle communication with a vehicle 200 via an antenna 110. The wireless road-side machine 100 includes a radio reception unit 120 that receives a radio signal transmitted from the vehicle 200. The wireless road-side machine 100 includes a message processing unit 130 that obtains location information of the vehicle 200 from the radio signals. The wireless road-side machine 100 includes an RSSI estimation unit 140 that calculates a distance between the wireless road-side machine 100 and the vehicle 200 based on the location information, and estimates a first RSSI of the radio signal based on the distance. The wireless road-side machine 100 includes an RSSI operation unit 150 that measures a second RSSI of the radio signal. The road-side machine 100 includes an abnormality detecting unit 160 that detects an abnormality in the antenna 110 based on the first RSSI and the second RSSI.SELECTED DRAWING: Figure 5
【課題】アンテナ本数が1本であってもアンテナ異常を適切に検出することが可能な無線路側機、交通通信システム、及び交通通信方法を提供する。【解決手段】一態様に係る無線路側機は、アンテ110ナを介して車両200と路車間通信を行う無線路側機100である。無線路側機100は、車両200から送信された無線信号を受信する無線受信部120を有する。また、無線路側機100は、無線信号から車両200の位置情報を取得するメッセージ処理部130を有する。更に、無線路側機100は、位置情報に基づいて、無線路側機100と車両200との距離を算出し、当該距離に基づいて、無線信号の第1RSSIを推定するRSSI推定部140を有する。更に、無線路側機100は、無線信号の第2RSSIを測定するRSSI演算部150を有する。更に、無線路側機100は、第1RSSI及び第2RSSIに基づいて、アンテナ110の異常を検出する異常検出部160を有する。【選択図】図5
WIRELESS ROAD-SIDE MACHINE, TRAFFIC COMMUNICATION SYSTEM, AND TRAFFIC COMMUNICATION METHOD
無線路側機、交通通信システム、及び交通通信方法
2023-12-06
Patent
Electronic Resource
Japanese
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