PROBLEM TO BE SOLVED: To reduce communication costs when a transmission device moving with a mobile body transmits predicted arrival time of the mobile body.SOLUTION: A transmission device repetitively obtains predicted arrival time of a mobile body and transmits the obtained predicted arrival time to a particular device. At this time, if difference between predicted arrival time obtained this time and predicted arrival time transmitted previous time is equal to or more than a threshold value S14 YES, the transmission device transmits the predicted arrival time obtained this time S15, and if the difference is less than the threshold value, it does not transmit the predicted arrival time obtained this time S14 NO.SELECTED DRAWING: Figure 9
【課題】移動体と共に移動する送信装置が移動体の到着予想時刻を送信する際の通信コストを削減する。【解決手段】移動体の到着予想時刻を繰り返し取得し、取得した到着予想時刻を特定の装置に送信する。このとき、今回取得した到着予想時刻と前回送信した到着予想時刻の差が閾値以上である場合にS14YES、今回取得した到着予想時刻を送信しS15、差が閾値未満である場合に、今回取得した到着予想時刻を送信しないS14NO。【選択図】図9
TRANSMISSION DEVICE, TRANSMISSION METHOD, TRANSMISSION PROGRAM, AND RECORDING MEDIUM
送信装置、送信方法、送信プログラム及び記録媒体
2017-05-25
Patent
Elektronische Ressource
Japanisch
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