A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
RADIO COMMUNICATIONS SYSTEM AND RADIO COMMUNICATION METHOD
To shorten the data length of a signal transmitted by communication between an in-vehicle unit and a portable device.SOLUTION: A portable device 3 includes a transmission unit 39 that transmits an operation start notification signal OS for specifying the transmission timing of a burst signal BS to an in-vehicle device 1, an intensity measurement unit 38 that measures the intensity of the burst signal BS transmitted from the in-vehicle device 1 according to the operation start notification signal OS, and a control unit 35 that determines the establishment of communication between the in-vehicle device 1 and the portable device 3 when the intensity measuring unit 38 measures the intensity equal to or greater than a threshold at the transmission timing. The in-vehicle device 1 includes a transmission unit 13 that transmits the burst signal BS at the transmission timing to the portable device 3 based on the operation start notification signal OS received from the portable device 3.SELECTED DRAWING: Figure 2
【課題】車載機および携帯機の通信で送信される信号のデータ長を短くする。【解決手段】携帯機３は、車載機１に対して、バースト信号ＢＳの送信タイミングを指定する動作開始通知信号ＯＳを送信する送信部３９と、動作開始通知信号ＯＳに応じて車載機１から送信されるバースト信号ＢＳの強度を測定する強度測定部３８と、強度測定部３８が送信タイミングにおいて閾値以上の強度を測定した場合に、車載機１および携帯機３の通信成立を判定する制御部３５と、を備える。車載機１は、携帯機３から受信した動作開始通知信号ＯＳに基づいて、携帯機３に対して、送信タイミングにおいてバースト信号ＢＳを送信する送信部１３を備える。【選択図】図２
RADIO COMMUNICATIONS SYSTEM AND RADIO COMMUNICATION METHOD
To shorten the data length of a signal transmitted by communication between an in-vehicle unit and a portable device.SOLUTION: A portable device 3 includes a transmission unit 39 that transmits an operation start notification signal OS for specifying the transmission timing of a burst signal BS to an in-vehicle device 1, an intensity measurement unit 38 that measures the intensity of the burst signal BS transmitted from the in-vehicle device 1 according to the operation start notification signal OS, and a control unit 35 that determines the establishment of communication between the in-vehicle device 1 and the portable device 3 when the intensity measuring unit 38 measures the intensity equal to or greater than a threshold at the transmission timing. The in-vehicle device 1 includes a transmission unit 13 that transmits the burst signal BS at the transmission timing to the portable device 3 based on the operation start notification signal OS received from the portable device 3.SELECTED DRAWING: Figure 2
【課題】車載機および携帯機の通信で送信される信号のデータ長を短くする。【解決手段】携帯機３は、車載機１に対して、バースト信号ＢＳの送信タイミングを指定する動作開始通知信号ＯＳを送信する送信部３９と、動作開始通知信号ＯＳに応じて車載機１から送信されるバースト信号ＢＳの強度を測定する強度測定部３８と、強度測定部３８が送信タイミングにおいて閾値以上の強度を測定した場合に、車載機１および携帯機３の通信成立を判定する制御部３５と、を備える。車載機１は、携帯機３から受信した動作開始通知信号ＯＳに基づいて、携帯機３に対して、送信タイミングにおいてバースト信号ＢＳを送信する送信部１３を備える。【選択図】図２
RADIO COMMUNICATIONS SYSTEM AND RADIO COMMUNICATION METHOD
無線通信システムおよび無線通信方法
TAKANASHI HIDENORI (author)
2019-04-18
Patent
Electronic Resource
Japanese
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