In an apparatus of a mobile communications network, time domain fractions of a transmission time interval, which are to be used for transmission of information relating to network operation, are determined as first symbols and the rest of the time domain fractions of the transmission time interval are determined as second symbols, and specific symbols of the second symbols are determined for non-transmission of data. User data is transmitted to a user equipment using respective ones of the first symbols in sub-carriers of a physical resource block scheduled for the user equipment which sub-carriers do not transmit the information relating to network operation in the respective ones of the first symbols, and using the second symbols other than the specific symbols in each of the sub-carriers, and transmission on the specific symbols is inhibited in each of the sub-carriers.