PARENT NODE, CHILD NODE, AND RADIO COMMUNICATIONS SYSTEM

摘要

PROBLEM TO BE SOLVED: To save association work between a parent node and a child node.MEANS FOR SOLVING THE PROBLEM: The parent node attached to a mobile body together with one or more radio communicating subordinate child nodes includes a control device for starting an association process with the child nodes at a timing when a moving speed of the mobile body exceeds a predetermined range.SELECTED DRAWING: Figure 6