Patent ID: 9584978
Date: 2017-02-28
CPC Classifications: G01S,H04L,H04W

Claim:
1. A method for updating a current sampling rate for a positioning system used by a terminal device, comprising: determining a current speed of the terminal device; receiving, for three consecutive sampling points, second sampling data by sampling at each of the three consecutive sampling points at the terminal device, wherein the three consecutive sampling points comprise a first sampling point, a second sampling point, and a third sampling point in sequence; based on the second sampling data of the three consecutive sampling points, determining whether the current speed of the terminal device is increasing or decreasing; based on a determination that the current speed of the terminal device is increasing, determining whether a rate at which the current speed is increasing exceeds a predetermined rate; based on a determination that the rate at which the current speed of the terminal device does not exceed the predetermined rate, increasing the current sampling rate for the positioning system used by the terminal device by a predetermined step within a predetermined range; and based on a determination that the rate at which the current speed is increasing exceeds the predetermined rate, increasing the current sampling rate for the positioning system used by the terminal device by n-fold of the predetermined step within the predetermined range.