To provide a roadside device and a communication congestion control method capable of appropriately supporting the passage of self-driving cars while reliably avoiding the congestion of ITS communication at a street intersection.SOLUTION: A roadside machine 3 of a cooperation source acquires terminal movement information (the number of approaching terminals) relevant to a movement direction of pedestrian terminals existing around the own device and transmits the terminal movement information to a roadside machine of a cooperation destination. When the roadside machine of the cooperation destination receives the terminal movement information from the roadside machine of the cooperation source, the presence or absence of congestion between terminals at a predetermined point in the future is determined based on the terminal movement information. When it is determined that there may be congestion between terminals, an instruction of congestion avoidance action for limiting communication between terminals is transmitted to a pedestrian terminal 1. When the pedestrian terminal receives the instruction of the congestion avoidance operation from the roadside machine of the cooperation destination, the operation of switching from direct communication by terminal-to-terminal communication to indirect communication via a roadside machine is executed as the congestion avoidance operation.SELECTED DRAWING: Figure 2

    【課題】街路の交差点におけるITS通信の輻輳を確実に回避して、自動運転車の通行を適切に支援することができるようにする。【解決手段】連携元の路側機3が、自装置の周辺に存在する歩行者端末の移動方向に関する端末移動情報(進入端末数)を取得して、その端末移動情報を連携先の路側機に送信し、連携先の路側機が、端末移動情報を連携元の路側機から受信すると、その端末移動情報に基づいて、将来の所定時点における端末間通信の輻輳の有無を判定し、端末間通信の輻輳があると判定された場合に、端末間通信を制限する輻輳回避動作の指示を歩行者端末1に送信し、歩行者端末が、輻輳回避動作の指示を連携先の路側機から受信すると、輻輳回避動作として、端末間通信による直接通信から、路側機を介した間接通信に切り替える動作を実行する。【選択図】図2


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    Titel :

    ROADSIDE DEVICE AND COMMUNICATION CONGESTION CONTROL METHOD


    Weitere Titelangaben:

    路側装置および通信輻輳制御方法


    Beteiligte:
    UENO TAKESHI (Autor:in) / SUDO HIROAKI (Autor:in) / AIHARA KOICHI (Autor:in) / YASUKI SHIN (Autor:in) / NAKAGAWA YOICHI (Autor:in)

    Erscheinungsdatum :

    2021-01-14


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    H04W WIRELESS COMMUNICATION NETWORKS , Drahtlose Kommunikationsnetze / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS




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