Increasing reliability of the geolocation of a terminal based on one or more identifiers of neighbouring transmitting devices

A geolocation method for geolocating a terminal of a wireless communication system, said terminal being adapted to exchange messages with an access network of said wireless communication system according to a first wireless communication protocol, said method including:

• detecting, by the terminal, for at least one transmitting device, an identifier of said transmitting device based on a message transmitted by said transmitting device according to a second wireless communication protocol,
• transmitting, by the terminal, to the access network, according to the first wireless communication protocol, at least one message including one or more detected identifiers,
• determining, by the access network, a geographical position of the terminal by transmitting a request comprising at least one of the received identifiers to a geolocation server storing a geolocation database including a list of identifiers of transmitting devices and the respective geographical positions of said transmitting devices, said request being defined using a database, known as “identifier reliability database”, making it possible to associate with any identifier at least one value representative of the reliability of said identifier for said geolocation serve;
• the identifier reliability database being used for at least one of selecting the geolocation server to which to send the request and selecting the identifiers to be included in the request;
• the identifier reliability database being stored by one or more servers different from the geolocation server.