ON-VEHICLE COMMUNICATION DEVICE, COMMUNICATION PROGRAM, AND MESSAGE TRANSMISSION METHOD

• Main Authors: KONYA TAKASHI, IKUTA KATSUYA, SANO YUKI
• Format: Patent
• Language: English; Japanese
• Published: 23.01.2020
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; PERFORMING OPERATIONS; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

To provide an on-vehicle communication device, a communication program, and a message transmission method in which it is expected to suppress a delay in transmission of a message having a high priority.SOLUTION: An on-vehicle communication device according to the embodiment is connected to another device via a plurality of communication lines, is provided for each of the communication lines, and includes: a plurality of communication units for transmitting and receiving a message via the communication line; a classification processing unit for performing a process of classifying a message to be transmitted to another device into a plurality of groups according to the priority of the message; and a message transmission processing unit for transmitting a message to another device by distributing the message classified into the plurality of groups to one or a plurality of communication units allocated to each group. The number of the communication units allocated to the group into which the high priority messages are classified is larger than the number of the communication units allocated to the group into which the low priority messages are classified.SELECTED DRAWING: Figure 3 【課題】優先度が高いメッセージの送信に遅延が発生することを抑制することが期待できる車載通信装置、通信プログラム及びメッセージ送信方法を提供する。【解決手段】本実施の形態に係る車載通信装置は、他の装置と複数の通信線を介して接続され、前記通信線に対してそれぞれ設けられ、前記通信線を介してメッセージの送受信を行う複数の通信部と、前記他の装置へ送信すべきメッセージを、該メッセージの優先度に応じて複数の群に分類する処理を行う分類処理部と、前記複数の群に分類されたメッセージを、各群に対して割り当てられた一又は複数の通信部に分配することで前記他の装置へメッセージを送信するメッセージ送信処理部とを備え、優先度が高いメッセージが分類される群に対して割り当てられる通信部の数は、優先度が低いメッセージが分類される群に対して割り当てられる通信部の数より多い。【選択図】図３