The present invention is directed to a method for determining whether a location associated with a wireless station, such as a cellular telephone, is located within an area of interest. The area of interest is defined using quadtree representation of an area that includes the area of interest and identifying...http://www.google.fr/patents/US7107038?utm_source=gb-gplus-shareBrevet US7107038 - Method for determining if the location of a wireless communication device is within a specified area
Method for determining if the location of a wireless communication device is ...
