Patent ID: 7321575

Claim:
A node position measuring system, comprising: a node that transmits a positioning signal; a reference station that transmits a reference signal; a plurality of base stations that receive the positioning signal and the reference signal; a server that calculates a position of the node; and a network that interconnects the base stations and the server, wherein: the reference station comprises: a positioning signal reception module that receives the positioning signal; and a reference signal generation module that transmits the reference signal after the positioning signal reception module receives the positioning signal; each of the base stations comprises: a signal reception module that receives the positioning signal and the reference signal; a reception time measuring module that detects specific patterns from the positioning signal and the reference signal received by the signal reception module to measure a detection time; and a communication module that transmits time information to the server, the time information being generated from the detection time measured by the reception time measuring module; and the server comprises a position calculation module that calculates the position of the node based on the time information transmitted from the base station.