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
ON-VEHICLE COMMUNICATION SYSTEM, ON-VEHICLE RELAY DEVICE, AND MESSAGE RELAY METHOD
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
2018-12-06
Patent
Electronic Resource
Japanese
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 |
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