A device (D) is dedicated to managing transmission of digital data blocks in an HS-DSCH downlink transport channel set up between a base station of a communications network and a user equipment. It comprises processing means (MT) adapted, each time that a given block must be transmitted to the user equipment via the transport channel, to select successive values of the redundancy parameter XRV in accordance with a selected sequence in which the value of the redundancy parameter XRV used for the first block transmission is selected to give priority to transmitting systematic bits.