To provide an on-vehicle communication system, on-vehicle relay device, and message relay method, capable of preventing message relay from being repeated in a bus-type network configuration.SOLUTION: An on-vehicle communication system according to the embodiment comprises: an on-vehicle relay device for relaying message transmission/reception between a plurality of bus-type communication lines; a plurality of first on-vehicle communication devices connected to any one of the plurality of communication lines; and a second on-vehicle communication device connected to at least two of the plurality of communication lines. The second on-vehicle communication device performs processing that when a specific message is received via one connected communication line, transmits the message via the other communication line. The on-vehicle relay device determines whether or not a specific message received via one connected communication line satisfies a predetermined discard condition, and performs processing of: not relaying the specific message when it is determined that the specific message satisfies the discard condition; and transmitting the specific message from another communication line when it is determined that the specific message does not satisfy the discard condition.SELECTED DRAWING: Figure 1

    【課題】バス型のネットワーク構成においてメッセージの中継が繰り返されることを防止し得る車載通信システム、車載中継装置及びメッセージ中継方法を提供する。【解決手段】本実施の形態に係る車載通信システムは、バス型の複数の通信線間のメッセージ送受信を中継する車載中継装置と、複数の通信線のうちのいずれか1つに接続された複数の第1の車載通信装置と、複数の通信線のうちの少なくとも2つの通信線に接続された第2の車載通信装置とを備える。第2の車載通信装置は、接続された一の通信線にて特定メッセージを受信した場合に該メッセージを他の通信線から送信する処理を行う。車載中継装置は、接続された一の通信線にて受信した特定メッセージが所定の破棄条件を満たすか否かを判定し、破棄条件を満たすと判定した場合に特定メッセージを中継せず、破棄条件を満たさないと判定した場合に特定メッセージを他の通信線から送信する処理を行う。【選択図】図1


    Access

    Download


    Export, share and cite



    Title :

    ON-VEHICLE COMMUNICATION SYSTEM, ON-VEHICLE RELAY DEVICE, AND MESSAGE RELAY METHOD


    Additional title:

    車載通信システム、車載中継装置及びメッセージ中継方法


    Contributors:

    Publication date :

    2018-12-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



    VEHICLE-MOUNTED COMMUNICATION SYSTEM, RELAY DEVICE, AND RELAY METHOD

    OTSU TOMOHIRO / HAGIHARA TAKESHI / URAYAMA HIROFUMI et al. | European Patent Office | 2024

    Free access

    VEHICLE-MOUNTED COMMUNICATION SYSTEM, RELAY DEVICE, AND RELAY METHOD

    OTSU TOMOHIRO / HAGIHARA TAKESHI / URAYAMA HIROFUMI et al. | European Patent Office | 2022

    Free access

    ON-VEHICLE COMMUNICATION SYSTEM, RELAY DEVICE, AND RELAY METHOD

    OTSU TOMOHIRO / HAGIWARA TSUYOSHI / URAYAMA HIROSHI et al. | European Patent Office | 2022

    Free access

    ON-VEHICLE RELAY DEVICE, ON-VEHICLE COMMUNICATION SYSTEM, AND RELAY PROGRAM

    MIYASHITA YUKIHIRO | European Patent Office | 2017

    Free access

    VEHICLE-MOUNTED RELAY DEVICE, VEHICLE-MOUNTED COMMUNICATION SYSTEM AND RELAY PROGRAM

    MIYASHITA YUKIHIRO | European Patent Office | 2016

    Free access