A method of data transmission performed by a wireless device, the method comprising: performing a random access procedure to a base station; receiving system information from the base station indicating that transmitting respective blocks of data during and after the random access procedure is permitted, wherein the system information comprises information elements specifying a configuration of a Physical Random Access Channel, PRACH, or Narrowband PRACH, NPRACH, and wherein the information elements comprise a Boolean flag set to a predetermined value to indicate that the transmitting of the respective blocks of data during and after the random access procedure is permitted, and wherein the Boolean flag is one of a plurality of Boolean flags comprised in the information elements, each of the Boolean flags corresponding to a respective coverage enhancement level and indicating whether or not, at the corresponding coverage enhancement level, the wireless device is permitted to transmit the respective blocks during and after the random access procedure; transmitting a first block of data stored at the wireless device to the base station during the random access procedure while withholding a second block of data stored at the wireless device from transmission to the base station until after completion of the random access procedure. performing a random access procedure to a base station; receiving system information from the base station indicating that transmitting respective blocks of data during and after the random access procedure is permitted, wherein the system information comprises information elements specifying a configuration of a Physical Random Access Channel, PRACH, or Narrowband PRACH, NPRACH, and wherein the information elements comprise a Boolean flag set to a predetermined value to indicate that the transmitting of the respective blocks of data during and after the random access procedure is permitted, and wherein the Boolean flag is one of a plurality of Boolean flags comprised in the information elements, each of the Boolean flags corresponding to a respective coverage enhancement level and indicating whether or not, at the corresponding coverage enhancement level, the wireless device is permitted to transmit the respective blocks during and after the random access procedure; respective blocks of data during and after the random access procedure is permitted, wherein the system information comprises information elements specifying a configuration of a Physical Random Access Channel, PRACH, or Narrowband PRACH, NPRACH, and wherein the information elements comprise a Boolean flag set to a predetermined value to indicate that the transmitting of the respective blocks of data during and after the random access procedure is permitted, and wherein the Boolean flag is one of a plurality of Boolean flags comprised in the information elements, each of the Boolean flags corresponding to a respective coverage enhancement level and indicating whether or not, at the corresponding coverage enhancement level, the wireless device is permitted to transmit the respective blocks during and after the random access procedure; transmitting a first block of data stored at the wireless device to the base station during the random access procedure while withholding a second block of data stored at the wireless device from transmission to the base station until after completion of the random access procedure.