PROBLEM TO BE SOLVED: To provide a technique that eliminates a state in which when a communication procedure of an optical beacon is started and executed before an on-vehicle device enters a communication region stipulated conventionally, an optical beacon side cannot receive second uplink transmission performed by the on-vehicle device, or even if it can receive, part of transportation information is lost.SOLUTION: A standard reception function unit receives uplink transmission from a standard uplink region SUA, i.e. an object region of first uplink transmission and second uplink transmission. An extension reception function unit receives the second uplink transmission from an extension uplink region EUA that is set at a traffic upstream side of the standard uplink region SUA so that the EUA overlaps with part of the standard uplink region SUA, or lies next to the SUA.SELECTED DRAWING: Figure 2

    【課題】車載機が従来規定されていた通信領域に進入する前に光ビーコンの通信手順が進行実行された場合、車載機が行う第2アップリンク送信を光ビーコン装置側が受信できない或いは受信できたとしても搬送情報の一部が欠落してしまう事態を無くすための技術の提案。【解決手段】標準受信機能部が、第1アップリンク送信および第2アップリンク送信の対象領域である標準アップリンク領域SUAからのアップリンク送信を受信する。拡張受信機能部が、標準アップリンク領域SUAと一部が重なる或いは隣接するように標準アップリンク領域SUAの交通流上流側に設定された拡張アップリンク領域EUAからの第2アップリンク送信を受信する。【選択図】図2


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    Title :

    LIGHT EMITTER AND RECEIVER, OPTICAL BEACON CONTROLLER, AND OPTICAL BEACON DEVICE


    Additional title:

    投受光器、光ビーコン制御機および光ビーコン装置


    Contributors:

    Publication date :

    2017-04-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04B TRANSMISSION , Übertragung / G08G Anlagen zur Steuerung, Regelung oder Überwachung des Verkehrs , TRAFFIC CONTROL SYSTEMS



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