Abstract: Method and system for detecting stations in wireless local area networks having at least one access point configured to: upon transmission of an association response to a station, send a radio measurement request to the station performing active scanning of a SSID having a unique identifier univocally associated with a persistent MAC address of the station, upon reception of a probe request, check if the SSID field has a unique identifier univocally associated with a persistent MAC address of a station, and associate the source address of the probe request with the persistent MAC address of the station on a database of known stations; detect stations within the coverage area of the access point based on the information stored on the database of known stations.

Abstract: A method and system for handling roaming in train-to-trackside wireless networks including: receiving, by an access point (APi) currently associated with a train access terminal installed on-board a train, radio measurements of signals received by the train access terminal from access points of the train-to-trackside wireless network; determining a next access point (APnext) providing the highest signal quality (maxSQ); evaluating compliance with roaming criteria including: the next access point (APnext) is included in a list of candidate access points (Ni); the time elapsed since the last roaming exceeds a minimum permanency time (tp); the highest signal quality (maxSQ) exceeds the signal quality (SQ(i)) of the access point (APi) by a roaming margin; if the roaming criteria are met, sending a roaming command instructing the train access terminal to roam to the next access point (APnext).

Abstract: Method and system for detecting stations in wireless local area networks having at least one access point configured to: upon transmission of an association response to a station, send a radio measurement request to the station performing active scanning of a SSID having a unique identifier univocally associated with a persistent MAC address of the station, upon reception of a probe request, check if the SSID field has a unique identifier univocally associated with a persistent MAC address of a station, and associate the source address of the probe request with the persistent MAC address of the station on a database of known stations; detect stations within the coverage area of the access point based on the information stored on the database of known stations.