Patent ID: 9049679
Filing Date: 2015-06-02
Classification: G01S,H04W

Abstract:
1. A location measurement method, comprising: determining a grade of a first received signal strength indication (RSSI) corresponding to an object which communicates with a first node; calculating a range of the object from the first node based on the grade of the first RSSI; determining a grade of a second RSSI corresponding to the object which communicates with a second node; calculating a range of the object from the second node based on the grade of the second RSSI; calculating two presumed locations based on the range from the first node and the range from the second node; and determining one of the two presumed locations to be a final location of the object by predicting a movement of the object; wherein the grade is classified as a first, second or third level based on the RSSI; and wherein the first level is a level which allows the range of the RSSI to be directly considered and applied to calculation of the range from the first or second node, and the second and third levels are levels which are used to calculate the range from the first or second node by apply preset ranges.