Wireless communications system, network relay unit and communication method

摘要

This invention provides a wireless communications system including: a first sensor unit for obtaining environmental information; a first network relay unit capable of communicating by wireless with the first sensor unit; a second network relay unit capable of communicating by wireless with the first network relay unit; and a second sensor unit capable of communicating by wireless with the second network relay unit. The first network relay unit includes an encapsulation processing part for hiding the sensor information in the relay information transmitted to the second network relay unit, and the second network relay unit includes an encapsulation releasing part for extracting the hidden sensor information from the received relay information.