Patent ID: 8767627

Claim:
A path control method for a multihop wireless network comprising a plurality of wireless nodes, the method comprising: calculating a metric value indicating a quantity of providing a guideline for selecting a superordinate destination node with each candidate for the superordinate destination node when carrying out a multihop wireless communication with a specific wireless node among the plurality of wireless nodes based on peripheral node information about the node information received from peripheral wireless nodes, by each of the wireless nodes; determining the superordinate destination node based on the calculated metric value, by each of the wireless nodes; selecting, as a target wireless node, a wireless node expected to change a number of the wireless nodes existing in a subordinate hierarchy lower than its own node from a network topology of tree structure with the specific wireless node as a root and wireless nodes other than the specific wireless node as knots and leaves in the multihop wireless network; and changing, intentionally, a value of the node information sent from the target wireless node to the peripheral wireless nodes.