A novel method to fight the non-line-of-sight error in AOA measurements for mobile location

In this contribution, a mobile location method is introduced using angle of arrival´s (AOAs) in UMTS-FDD systems with measurements from at least two different base-stations. Although computationally efficient, this method enhances state of the art algorithms based on a simple trilateration and takes into account error measurements caused by non-line-of-sight (NLOS) and near-far effect. The new method attributes an index of confidence for each measure, in order to allow the mobile to select the two most reliable measures and not to use all measures, equally.