Patent ID: 9037131
Filing Date: 2015-05-19
Classification: H04W

Abstract:
1. A method for generating a radio coverage map for an access point in a wireless environment comprising a plurality of physical levels including a first physical level and a second physical level located above the first physical level, the method comprising: generating, by one of a location assistance server, mobile station, or generation module, a two-dimensional radio coverage map located between the first physical level and the second physical level without taking into account a signal attenuation caused by the second physical level, the access point being located above the second physical level, the two-dimensional radio coverage map being located at a target distance from the access point and comprising a plurality of map points, each of the map points having a predicted received signal strength value; determining a projection window located at a same vertical level as the second physical level; determining a projected area on the two-dimensional radio coverage map by computing a geometrical projection from the access point through the projection window onto the two-dimensional radio coverage map; identifying a plurality of first points in a first area on the two-dimensional radio coverage map, the first area being outside the projected area, each of the first points having a predicted received signal strength value; and reducing the predicted received signal strength value of each of the first points by a value equal to the signal attenuation caused by the second physical level.