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. On an interruption to the data transmission connection between the fixed network and a base station and/or on interruption of the radio connection between the mobile station and the base station, a data transmission between the mobile station and the fixed network is achieved via the separate base station and at least one further base station connected to the fixed network by means of an uninterrupted data transmission connection.