A method for determining the location of a mobile unit (MU) in a wireless communication system and presenting it to a remote party. The location of a remote MU is determined by comparing a snapshot of a predefined portion of the radio-frequency (RF) spectrum taken by the MU to a reference database containing...http://www.google.de/patents/US7725111?utm_source=gb-gplus-sharePatent US7725111 - Location determination using RF fingerprinting
