Patent ID: 8587476
Filing Date: 2013-11-19
Classification: G01S,H04W

Abstract:
1. A method for controlling use of a location measurement system on a first mobile device, the method comprising: the first mobile device obtaining a region of uncertainty of the first mobile device using an other location measurement system or manually inputted data; the first mobile device receiving data for a region of uncertainty of a second mobile device; the first mobile device displaying a map of both regions of uncertainty of the first mobile device and the second mobile device; the first mobile device computing at least one line that bisects at least one of a horizontal distance and a vertical distance between the region of uncertainty of the first mobile device and the region of uncertainty of the second mobile device; when the first mobile device detects a current region of uncertainty of the first mobile device coincides with or has crossed over the at least one line, further determining if the current region of uncertainty of the first mobile device is within a predetermined distance from a current region of uncertainty of the second mobile device; if the current region of uncertainty of the first mobile device is not within the predetermined distance, the first mobile device computing at least one updated line that bisects a horizontal distance and a vertical distance between the current region of uncertainty of the first mobile device and the current region of uncertainty of the second mobile device; and if the current region of uncertainty of the first mobile device is within the predetermined distance,