To provide a technique that can prevent erroneously detecting no communication in radio communication as an abnormality during the normal operation of a train radio system.SOLUTION: A train radio system includes a base station 10, a plurality of repeaters 20, and a mobile station 30. The base station 10 maintains a radio link with the mobile station 30 by transmitting messages in both directions, detects that the radio link with the mobile station 30 has been released by not receiving a message from the mobile station 30 for a predetermined period of time or more, acquires a repeater number associated with the mobile station number of the mobile station 30 for which it is detected that the radio link has been released from a storage unit 11a when detecting that the radio link has been released, and determines whether the communication with the mobile station 30 is abnormal based on the repeater number and information associated with the repeater number stored in an abnormality detection mask table.SELECTED DRAWING: Figure 1

    【課題】列車無線システムの通常運用時における無線通信の不通について異常であると誤検知することを抑制可能な技術を提供することを目的とする。【解決手段】列車無線システムは、基地局10と、複数の中継機20と、移動局30とを備える。基地局10は、移動局30との間で電文を双方向に送信することで無線リンクを維持し、所定時間以上、移動局30から電文を受信しないことをもって移動局30との無線リンクが解除されたことを検知し、無線リンクが解除されたことを検知したときに、無線リンクが解除されたことを検知した移動局30の移動局番号と関連付けられた中継機番号を記憶部11aから取得し、中継機番号と異常検知マスクテーブルに格納された中継機番号に関連付けられた情報とに基づいて、移動局30との間の通信が異常であるかどうかを判定する。【選択図】図1


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    Title :

    TRAIN RADIO SYSTEM AND BASE STATION


    Additional title:

    列車無線システムおよび基地局


    Contributors:

    Publication date :

    2023-10-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B61L Leiten des Eisenbahnverkehrs , GUIDING RAILWAY TRAFFIC / H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze / H04B TRANSMISSION , Übertragung




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