A transmitting/receiving system and a data processing method of the same are disclosed herein. The receiving system may include a receiving unit, a first processing unit, and a second processing unit. The receiving unit receives a broadcast signal including mobile service data and an FIC segment from at least one slot. Herein, a transmission frame may be configured of a plurality of sub-frames for receiving at least one ensemble and at least one mobile service, and a sub-frame may be configured of a plurality of slots. The a first processing unit extracts FIC segments each having a different FIC chunk major protocol version from the broadcast signal, and acquires a number of the corresponding FIC segment, a number of the last FIC segment, and FIC chunk major protocol version information from each segment header of the extracted FIC segments. The second processing unit obtains an FIC chunk including signaling information between at least one ensemble and at least one mobile service frame from respective payloads of the FIC segments, based upon the acquired number of the corresponding FIC segment, number of the last FIC segment, and FIC chunk major protocol version information.