To provide an apparatus and method for efficiently transmitting data according to a communication plan using a radio wave map, based on a position in the map and a condition of a radio wave propagation path at that position.SOLUTION: A data transmission apparatus 100 comprises: a radio communication section 101 for performing radio communication with an external communication apparatus; a traveling route information acquisition section 108 for acquiring a future traveling route of a mobile body; a propagation environment information acquisition section 109 for acquiring propagation environment information of a radio wave propagation path to be used for the radio communication in the traveling route; a speed information acquisition unit 103 for acquiring the travel speed of the mobile body; a conversion section 110 for converting, on the basis of the travel speed, a relationship between the traveling route and the propagation environment information into data slots defined by a communication speed per unit time; an allocation section 111 for allocate data to the data slots in order of having higher communication speed; and a transmission instruction section 112 for instructing the radio communication section to transmit data allocated to a data slot when the data slot to which the data is allocated corresponds to the current time.SELECTED DRAWING: Figure 2
【課題】電波マップを用いて地図上の地点とその地点での電波伝搬路の状態に基づく通信計画に従って、効率的にデータ送信を行う装置及び方法を提供する。【解決手段】データ送信装置100は、外部の通信装置との間で無線通信を行う無線通信部101と、移動体の将来の走行経路を取得する走行経路情報取得部108と、走行経路における、無線通信で用いる電波伝搬路の伝搬環境情報を取得する伝搬環境情報取得部109と、移動体の移動速度を取得する速度情報取得部103と、移動速度に基づき、走行経路と伝搬環境情報との関係を、単位時間毎の通信速度で定義されたデータスロットに変換する変換部110と、通信速度が速いデータスロットから順にデータを割当てる割当部111と、現在時刻に対応するデータスロットにデータが割当てられている場合、無線通信部に対しデータスロットに割当てられたデータの送信を指示する送信指示部112と、を有する。【選択図】図2
DATA TRANSMISSION APPARATUS, DATA TRANSMISSION METHOD, AND DATA TRANSMISSION PROGRAM
データ送信装置、データ送信方法、及びデータ送信プログラム
2022-04-06
Patent
Electronic Resource
Japanese
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