A mobile device , comprising: - a transceiver configured to transceive on a radio link between the mobile device and an access point node , - at least one processor coupled with the transceiver and configured to determine several locations of the mobile device , based on a reference positioning technique comprising at least one of inertial Navigation System positioning, and fixed reference locations and configured to determine a plurality of location-specific downlink properties of the radio link at each of the several locations, wherein the at least one processor is further configured to fuse the plurality of location-specific downlink properties to obtain, for each of the several locations, a location-specific fingerprint of the radio link associated with the determined location of the mobile device , - an interface coupled with the at least one processor and configured to communicate with a fingerprint repository node , wherein the at least one processor is configured to send, via the interface , data indicative of the location-specific fingerprint for each of the several locations to the fingerprint repository node using a wireless local Area Network Radio Access Technology, wherein the interface coupled with the at least one processor is configured to communicate with the access point node , wherein the at least one processor is configured to receive, via the interface from the access point node , data indicative of a plurality of location-specific uplink properties of the radio link , the plurality of location-specific uplink properties being associated with the determined location of the mobile device , wherein the at least one processor is further configured to fuse the plurality of location-specific uplink properties and the plurality of location-specific downlink properties to obtain the location-specific fingerprint of the radio link associated with the determined location of the mobile device ,. - a transceiver configured to transceive on a radio link between the mobile device and an access point node , - at least one processor coupled with the transceiver and configured to determine several locations of the mobile device , based on a reference positioning technique comprising at least one of inertial Navigation System positioning, and fixed reference locations and configured to determine a plurality of location-specific downlink properties of the radio link at each of the several locations, wherein the at least one processor is further configured to fuse the plurality of location-specific downlink properties to obtain, for each of the several locations, a location-specific fingerprint of the radio link associated with the determined location of the mobile device , - an interface coupled with the at least one processor and configured to communicate with a fingerprint repository node , wherein the at least one processor is configured to receive, via the interface from the access point node , data indicative of a plurality of location-specific uplink properties of the radio link , the plurality of location-specific uplink properties being associated with the determined location of the mobile device , wherein the at least one processor is further configured to fuse the plurality of location-specific uplink properties and the plurality of location-specific downlink properties to obtain the location-specific fingerprint of the radio link associated with the determined location of the mobile device ,. <EOS>