To provide a communication system, a communication device, a program, and a communication method capable of increasing certainty of wireless data transmission.SOLUTION: A communication system 100 includes a base station 2 and an in-vehicle device 1. The in-vehicle device 1 includes a reference signal acquisition unit 103 that acquires a reference signal from the base station 2, a propagation path state determination unit 104 that determines a propagation path state on the basis of the reference signal, a CQI report transmission processing unit 116 that generates a CQI report regarding the propagation path state on the basis of the determined propagation path state and transmits the CQI report to the base station 2, and a reception processing unit 102 that receives data transmitted in a communication mode corresponding to the propagation path state indicated by the CQI report from the base station 2. When downloading predetermined data via the base station 2, the CQI report transmission processing unit 116 generates a CQI report indicating a propagation path state that is worse than an actual propagation path state and transmits the generated CQI report to the base station 2.SELECTED DRAWING: Figure 4
【課題】無線でのデータ伝送の確実性を上げることができる通信システム、通信装置、プログラム及び通信方法を提供すること。【解決手段】通信システム100は、基地局2と車載装置1と、を備え、車載装置1は、基地局2からリファレンス信号を取得するリファレンス信号取得部103と、リファレンス信号に基づいて伝搬路状態を判定する伝搬路状態判定部104と、判定された伝搬路状態に基づいて、伝搬路状態に関するCQIリポートを生成し、基地局2に送信するCQIリポート送信処理部116と、基地局2からのCQIリポートが示す伝搬路状態に対応する通信モードで送信されたデータを受信する受信処理部102と、を備え、基地局2を介して所定のデータをダウンロードする場合、CQIリポート送信処理部116は、実際の伝搬路状態よりも状態が低い伝搬路状態を示すCQIリポートを生成し、基地局2に送信する。【選択図】図4
COMMUNICATION SYSTEM, COMMUNICATION DEVICE, PROGRAM, AND COMMUNICATION METHOD
通信システム、通信装置、プログラム及び通信方法
2024-12-19
Patent
Electronic Resource
Japanese
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