RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION SYSTEM

To provide a radio communication device etc. which wiretap the communication quality deterioration of another node transmission path to estimate a region having deteriorated communication quality, so that a new connection destination can be searched for in place of the self-node transmission path running across the region, with low power and a low delay.SOLUTION: The radio communication device includes: a processing unit of a packet destined to another node, which wiretaps a radio communication packet which is transmitted and received in a network without having the self-radio communication device as a destination, to extract transmission source radio communication device information, destination radio communication device information and radio communication quality information of the radio communication packet; a cutoff detector unit which generates communication link information to detect whether or not the radio communication quality of the communication link deteriorates beyond a preset value; a cutoff position estimation unit which estimates a cutoff occurrence region if the radio communication quality of two or more communication links deteriorates beyond the preset value; and a routing calculation unit which calculates a communication route not passing inside the cutoff occurrence region when the communication route is indicated by a straight line.SELECTED DRAWING: Figure 2 【課題】他ノード伝送路の通信品質劣化を傍受し、通信品質が劣化した領域を推定し、当該領域を横切る自ノード伝送路の替わりの新たな接続先を低電力および低遅延で探索可能な無線通信装置等を提供すること。【解決手段】自無線通信装置が宛先となっていない、ネットワーク内で送受信される無線通信パケットを傍受し、無線通信パケットの送信元無線通信装置情報、宛先無線通信装置情報、および、無線通信品質情報を抽出する他ノード宛パケット処理部と、通信リンク情報を生成し、通信リンクの無線通信品質があらかじめ定められた値を超えて劣化しているか否かを検出する遮断検出部と、２つ以上の通信リンクの無線通信品質があらかじめ定められた値を超えて劣化している場合に、遮断発生領域を推定する遮断位置推定部と、通信経路を直線で示した場合に遮断発生領域の内側を通過しない通信経路を演算するルーティング演算部と、を含む。【選択図】図２