A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
IN-VEHICLE UNIT, COMMUNICATION SYSTEM FOR VEHICLE, COMMUNICATION PROCESSING METHOD AND CONTROL PROGRAM
To provide an in-vehicle unit that allows for increase in a transmission range of a signal to be transmitted from a vehicle to a portable unit and allows for elimination of the problem of a dead zone range and that can perform radio communication with the portable unit within the increased transmission range.SOLUTION: The in-vehicle unit causes at least two transmission antenna and indoor antenna disposed on a vehicle so as to be separated from each other to transmit signals and, in response to a response signal from a portable unit having received the transmitted signals, performs processing. The in-vehicle unit comprises: a transmission control part causing the two transmission antennas to simultaneously transmit the signals; a strength change part that when no response signal in response to the signals caused to be transmitted from the two transmission antennas is received from the portable unit, changes transmission strength of the indoor antenna so that the portable unit outside the vehicle can receive the signals; and an indoor transmission control part causing the indoor antenna to transmit a signal using the transmission strength changed by the strength change part.SELECTED DRAWING: Figure 1
【課題】車両から携帯機へ送信される信号の送信範囲を拡大すると共に、不感帯領域の問題を解消することができ、拡大された送信範囲内にある携帯機と無線通信を行うことができる車載機を提供する。【解決手段】車載機は、車両に離隔配置された少なくとも２つの送信アンテナ及び室内アンテナから信号を送信させ、信号を受信した携帯機からの応答信号に応じて処理を行う。車載機は、２つの送信アンテナから信号を同時的に送信させる送信制御部と、２つの送信アンテナから送信させた信号に対する携帯機からの応答信号を受信しなかった場合、車室外の携帯機が信号を受信できるように、室内アンテナの送信強度を変更する強度変更部と、強度変更部にて変更された送信強度で、室内アンテナから信号を送信させる室内送信制御部とを備える。【選択図】図１
IN-VEHICLE UNIT, COMMUNICATION SYSTEM FOR VEHICLE, COMMUNICATION PROCESSING METHOD AND CONTROL PROGRAM
To provide an in-vehicle unit that allows for increase in a transmission range of a signal to be transmitted from a vehicle to a portable unit and allows for elimination of the problem of a dead zone range and that can perform radio communication with the portable unit within the increased transmission range.SOLUTION: The in-vehicle unit causes at least two transmission antenna and indoor antenna disposed on a vehicle so as to be separated from each other to transmit signals and, in response to a response signal from a portable unit having received the transmitted signals, performs processing. The in-vehicle unit comprises: a transmission control part causing the two transmission antennas to simultaneously transmit the signals; a strength change part that when no response signal in response to the signals caused to be transmitted from the two transmission antennas is received from the portable unit, changes transmission strength of the indoor antenna so that the portable unit outside the vehicle can receive the signals; and an indoor transmission control part causing the indoor antenna to transmit a signal using the transmission strength changed by the strength change part.SELECTED DRAWING: Figure 1
【課題】車両から携帯機へ送信される信号の送信範囲を拡大すると共に、不感帯領域の問題を解消することができ、拡大された送信範囲内にある携帯機と無線通信を行うことができる車載機を提供する。【解決手段】車載機は、車両に離隔配置された少なくとも２つの送信アンテナ及び室内アンテナから信号を送信させ、信号を受信した携帯機からの応答信号に応じて処理を行う。車載機は、２つの送信アンテナから信号を同時的に送信させる送信制御部と、２つの送信アンテナから送信させた信号に対する携帯機からの応答信号を受信しなかった場合、車室外の携帯機が信号を受信できるように、室内アンテナの送信強度を変更する強度変更部と、強度変更部にて変更された送信強度で、室内アンテナから信号を送信させる室内送信制御部とを備える。【選択図】図１
IN-VEHICLE UNIT, COMMUNICATION SYSTEM FOR VEHICLE, COMMUNICATION PROCESSING METHOD AND CONTROL PROGRAM
車載機、車両用通信システム、通信処理方法及び制御プログラム
MATSUOKA KENJI (author)
2019-03-22
Patent
Electronic Resource
Japanese
| European Patent Office | 2019
IN-VEHICLE UNIT, COMMUNICATION SYSTEM FOR VEHICLE AND COMMUNICATION PROCESSING METHOD
| European Patent Office | 2019
COMMUNICATION SYSTEM FOR VEHICLE, ON-VEHICLE UNIT, VEHICLE CONTROL METHOD AND COMPUTER PROGRAM
| European Patent Office | 2019
| European Patent Office | 2019
| European Patent Office | 2019