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1. 发明专利

JP2011023910A Road side radio device 有权
标题翻译：道路无线电设备
公开(公告)号：JP2011023910A
公开(公告)日：2011-02-03
申请号：JP2009166287
申请日：2009-07-15
申请人： Nakanihon Highway Engineering Nagoya Kk , 中日本ハイウェイ・エンジニアリング名古屋株式会社
发明人： OYAMA MISUMI , HIGASHI MASAKATSU , OSHIMA MISAO , OKUBO FUTOSHI
IPC分类号： H04W4/04 , G08G1/09 , H04W76/02
摘要： PROBLEM TO BE SOLVED: To provide a road side radio device for communication with a vehicle carrying ETC by using DSRC (Dedicated Short-Range Communication System).
SOLUTION: The road side radio device for ETC includes an RSSI detector 5 for detecting reception signal intensity (hereinafter RSSI) from a vehicle 21 carrying ETC which is received with an antenna, an RSSI discriminator 6 which discriminates whether or not a detected RSSI value exceeds a predetermined threshold value, and a communication controller 7 which decides that the reception signal is valid only if the RSSI value exceeds the threshold value and starts signal transmission and reception from the vehicle 21 carrying ETC. A device body 1 is installed at a tollgate in a tunnel, with a preset threshold value as -52 dBm.
COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于通过使用DSRC（专用短距离通信系统）与携带ETC的车辆进行通信的路侧无线电设备。解决方案：用于ETC的路侧无线电设备包括用于从携带用天线接收的ETC的车辆21检测接收信号强度（以下称为RSSI）的RSSI检测器5，鉴别是否检测到的RSSI鉴别器6 RSSI值超过预定阈值，以及通信控制器7，其仅在RSSI值超过阈值时才决定接收信号有效，并且从携带ETC的车辆21开始信号发送和接收。设备主体1安装在隧道中的收费站，其预设阈值为-52dBm。版权所有（C）2011，JPO＆INPIT

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