Abstract: The invention relates to a method and a system, for subterranean wireless data transmission between at least one mobile station and affixed network by means of a radio network for the monitoring and control of subterranean moving machines. The fixed network comprises a number of fixed base stations embodied as access points, each base station being connected to the fixed network by means of at least one data transmission connection, preferably by cable. Each base station and the mobile station comprise a transceiver device and the data transmission between the mobile station and the fixed network is achieved in a wireless manner over the radio network via at least one base station.

Abstract: A method for wireless underground data transmission between a large number of mobile stations and a fixed network involves the mobile stations being stored in depersonalized form, advantageously in a loading station. Upon removal, the mobile stations are personalized using a personalization device associated with the mobile station, for example by inputting a code or by an RFID card arranged close by which makes contact with the mobile station without touching it, so that said mobile station can also be reached by means of a personalized user identifier in addition to the associated appliance-specific identifier. Following use, each mobile station is depersonalized using the personalization device associated with the mobile station when it is returned to the storage station.

Abstract: An apparatus for linking mobile communication devices to wireless networks in underground edifices includes a plurality of base stations which are arranged at a spatial distance from one another inside tunnel systems, substantially in the direction of the tunnel axes, such that the reception areas of two adjacent base stations overlap as little as possible. All base stations operate on a single common channel. In a method used for the apparatus, the mobile station switches to an adjacent base station when a quality signal drops below a predetermined threshold value.

Abstract: The invention relates to a method and a system, for subterranean wireless data transmission between at least one mobile station and affixed network by means of a radio network for the monitoring and control of subterranean moving machines. The fixed network comprises a number of fixed base stations embodied as access points, each base station being connected to the fixed network by means of at least one data transmission connection, preferably by cable. Each base station and the mobile station comprise a transceiver device and the data transmission between the mobile station and the fixed network is achieved in a wireless manner over the radio network via at least one base station.