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Systems and methods to identify a predefined geographical region in which a mobile device is located

  • US 9,307,360 B1
  • Filed: 01/09/2015
  • Issued: 04/05/2016
  • Est. Priority Date: 01/09/2015
  • Status: Active Grant
First Claim
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1. A method implemented in a computing device, the method comprising:

  • storing, in the computing device, an identifier of a geographical region having a predefined geographical boundary;

    storing, in the computing device, a set of cell identifiers, each of the cell identifiers identifying a cell that is determined to be within the predefined geographical boundary;

    receiving, from a mobile device, a location of the mobile device;

    converting, by the computing device, a set of coordinates of the location of the mobile device to a first cell identifier, wherein the set of coordinates includes longitude and latitude of the location, wherein the converting includingselecting digits from the longitude and the latitude of the location in accordance with a cell resolution level; and

    combining the digits selected from the longitude and the latitude of the location into an integer representing the first cell identifier; and

    determining, by the computing device, whether or not the location of the mobile device is within the geographical region based on searching the set of cell identifiers to determine whether or not the set has the first cell identifier;

    wherein the selecting of the digits from the longitude and the latitude includes;

    selecting digits from integer part of the longitude and a first number of digits from the longitude after the decimal point of the longitude to form an integer representation of the longitude at the cell resolution level; and

    selecting digits from integer part of the latitude and the same first number of digits from the latitude after the decimal point of the latitude to form an integer representation of the longitude at the cell resolution level.

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