Patent ID: 8638691

Claim:
A wireless communication system comprising a parent node as a host communication device and a child node as a subordinate communication device, wherein the parent node includes: a parent node search signal receiver receiving a parent node search signal transmitted from the child node; a measurement device measuring, upon receiving the parent node search signal, an intensity of wireless link with the child node transmitting the parent node search signal; a responder returning a response signal to the child node as a sender of the parent node search signal after waiting for a response wait time in accordance with the intensity of the wireless link; and a response wait time determination device determining the response wait time in accordance with the intensity of the wireless link so that the response wait time becomes shorter with an increase in the intensity of the wireless link and the response wait time becomes longer with a decrease in the intensity of the wireless link, wherein the child node includes: a transmitter transmitting the parent node search signal; a response signal receiver receiving the response signal; and a parent node selector selecting a parent node for routine communication with the child node in accordance with a wait time from transmission of the parent node search signal to reception of the response signal, and wherein the parent node selector of the child node selects a parent node returning the response signal first.