@article{oai:ipsj.ixsq.nii.ac.jp:00216373, author = {三原, 翔一郎 and 吉川, 慧司 and 村上, 隆秀 and 新保, 宏之 and Shoichiro, Mihara and Keiji, Yoshikawa and Takahide, Murakami and Hiroyuki, Shinbo}, issue = {2}, journal = {情報処理学会論文誌}, month = {Feb}, note = {本稿は,ミリ波の受信信号強度とRGB-Dカメラの動画像を組み合わせて,通信端末の位置を推定する手法を提案する.ミリ波を用いた無線通信には,物体が通信路を遮蔽したときに受信電力が大きく低下し,通信が遮断されやすい問題がある.これに対し,カメラの画像を用いて遮蔽を予測し,基地局間の無線リンクを制御する技術がいくつか提案されている.しかし,ミリ波の遮蔽を予測するには,通信端末の位置を数十cmの精度で把握する必要がある.既存の方法では,特殊な測位装置に加えて,端末の位置情報を基地局に通知する仕組みが必要となるため,実環境への適用は困難となる.この問題を解決するため,基地局側の情報のみを用いた端末位置の推定手法を提案する.提案手法は,基地局から撮影したRGB-Dカメラ動画像と,ミリ波の遮蔽による受信信号強度の変化に基づいて,通信端末の位置を推定する.実際の通信環境を模した屋外環境で実験を行い,提案手法により通信端末の位置を推定できることを示した., In this paper, we propose a positioning method for user equipment (UE) of a mobile millimeter wave (mmWave) communication system. In such a system, a blockage is a cause of a disconnection or a serious degradation of communication. Several techniques to control radio links between base stations have been proposed to avoid these problems. These techniques control radio links by a blockage prediction based on camera images. However, those techniques require an accurate position of the UE with a precision of several tens of centimeters. The existing method requires a particular positioning equipment and a system to notify the UE position to the base station, which makes it difficult to apply in real environments. To solve this problem, we propose the UE positioning method using information only on the base station side. Our proposed method estimates a UE position based on temporal variations in images from a RGB-D camera and the received signal strength indicator by movements of the objects. We evaluated our method by experiments in an outside environment that simulates the actual communication environment. The experiments show that the proposed method can estimate the position of the UE.}, pages = {568--577}, title = {ミリ波無線通信システムの受信信号強度とRGB-Dカメラ動画像を用いた通信端末の位置推定}, volume = {63}, year = {2022} }