PROBLEM TO BE SOLVED: To provide a transportable communication device and a radio communication system that can secure communication available distance between the transportable communication device and an on-vehicle communication device without depending on the polarization characteristic of an antenna in the on-vehicle communication device.SOLUTION: A transportable communication device 5 comprises an antenna capable of switching polarization to horizontal polarization or vertical polarization as a radio signal transmission antenna 6. While operation to an operation unit 52 is continuing, the transportable communication device 5 continuously or intermittently repeats the transmission of a radio signal from the antenna 6 to an on-vehicle communication device. The transportable communication device 5 clocks, with a timer 54, the duration of the operation to the operation unit 52, and if the duration exceeds a prescribed time, it switches the polarization of the antenna 6 with a polarization switching unit 56. The on-vehicle communication device controls the lock or unlock of a vehicle door depending on a result of radio communication with the transportable communication device 5.SELECTED DRAWING: Figure 2

    【課題】車載通信装置のアンテナの偏波特性によらず、可搬型通信装置との通信可能距離を確保することができる可搬型通信装置及び無線通信システムを提供する。【解決手段】可搬型通信装置5は、無線信号送信用のアンテナ6として、水平偏波又は垂直偏波の偏波切替が可能なアンテナを備える。可搬型通信装置5は、操作部52に対する操作が継続されている間、アンテナ6から車載通信装置へ無線信号の送信を継続的に又は間欠的に繰り返して行う。可搬型通信装置5は、操作部52に対する操作の継続時間をタイマ54にて計時し、継続時間が所定時間を超える場合に、偏波切替部56にてアンテナ6の偏波切替を行う。車載通信装置は、可搬型通信装置5との無線通信の結果に応じて、車両のドアのロック又はアンロックを制御する。【選択図】図2


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    Title :

    TRANSPORTABLE COMMUNICATION DEVICE AND RADIO COMMUNICATION SYSTEM


    Additional title:

    可搬型通信装置及び無線通信システム


    Contributors:

    Publication date :

    2016-10-06


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H04B TRANSMISSION , Übertragung / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR / E05B LOCKS , Schlösser



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