Method and radio communication system for an industrial automation system, radio subscriber station and serialization unit

A radio communication system for an industrial automation system, comprising:

• at least one first and one second communication device operatively linked redundantly to an industrial communication network, each of the at least one first and one second communication device comprising:
• at least one first and one second communication network terminal, and
• a signal processing unit connected to the at least one first and second communication network terminals, said signal processing unit having a multiplexer unit for parallel forwarding of data frames to be sent to the at least one first and second communication network terminals and having a redundancy treatment unit for processing data frames received by the at least one first and second communication network terminals, the redundancy treatment unit being configured to detect received redundant data frames;
• at least one network infrastructure device comprising:
• a plurality of communication network terminals, and
• a coupling element interconnecting the at least one first and second communication network terminals;
• wherein the at least one first communication device is connected via its at least one first and second communication network terminals to a serialization unit which is connected to the least one network infrastructure device via exactly one line connection;
• wherein a first and a second radio base station are connected to the at least one network infrastructure device;
• wherein the at least one second communication device is connected via its at least one first and second communication network terminals one of (i) indirectly and (ii) directly to a first and a second radio subscriber station;
• wherein the first radio subscriber station is connected to the first radio base station via a first radio link and the second radio subscriber station is connected to the second radio base station via a second radio link;
• wherein the serialization unit is configured to replace destination addresses in each data frame conveyed via the at least one first communication network terminal of the at least one first communication device with an address of the first radio subscriber station and configured to replace destination addresses in each data frame conveyed via the at least one second communication network terminal of the at least one first communication device with an address of the second radio subscriber station;
• wherein the first radio subscriber station is configured to replace destination addresses corresponding to its address in each data frame conveyed via the first radio link with original destination addresses replaced in the serialization unit;
• and
• wherein the second radio subscriber station is configured to replace destination addresses corresponding to its address in each data frame conveyed via the second radio link with the original destination addresses replaced in the serialization unit.