To achieve stable wireless communication when a mobile object is remotely monitored by wireless communication, and perform an appropriate route search in the case where the wireless communication is not disconnected and in the case where it is disconnected.SOLUTION: A navigation device includes: a position radio quality information storage unit that stores position radio quality information in which a position and radio communication quality at the position are associated and recorded; a wireless disconnection probability calculation unit that calculates a wireless disconnection probability which is a probability that wireless communication may be disconnected for each position based on the position radio quality information; and a route search unit that calculates a total link cost for each route candidate based on the wireless disconnection probability, a movement cost about an arrival at a destination when the wireless communication is not disconnected, and a movement cost about an arrival at the destination that occurs when the wireless communication is disconnected, and searches for a route from route candidates based on the calculated total link cost.SELECTED DRAWING: Figure 1
【課題】無線通信により遠隔で移動体を監視する際に安定的な無線通信の実現を図ると共に無線通信が切断しない場合や切断する場合に対して適切な経路探索を行うこと。【解決手段】位置と当該位置における無線通信品質とが関連付けて記録された位置無線品質情報を格納する位置無線品質情報格納部と、位置無線品質情報に基づいて位置毎に無線通信が切断する確率である無線切断確率を算出する無線切断確率算出部と、無線切断確率と無線通信が切断しない場合の目的地への到達に関する移動コストと無線通信が切断すると発生する目的地への到達に関する移動コストとに基づいて経路の候補毎に総合リンクコストを算出し、算出された総合リンクコストに基づいて経路の候補の中から経路を探索する経路探索部と、を備える。【選択図】図1
NAVIGATION DEVICE, NAVIGATION METHOD, AND COMPUTER PROGRAM
ナビゲーション装置、ナビゲーション方法及びコンピュータプログラム
23.06.2022
Patent
Elektronische Ressource
Japanisch
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