Methods and apparatuses for handling retransmissions in a wireless telecommunications system

The embodiments herein relate to a method performed by UE, a UE (300), a network node or gNB (400) and a method performed by the gNB (400) for handling retransmissions in a wireless telecommunications system and resolving misalignment between the UE (300) and the gNB (400). According to exemplary embodiments, there is provided a retransmission counter placed or implemented at the UE and/or the gNB which is configured to count every failing data packet (i.e., the receiver(s)/transmitters is/are informed via the NACK messages or the NACK timers). There is also provided a retransmission assignment indicator message configured to comprise, fully or partially: The content of said counter and the content or the structure of the CGB (Code Block Group): e.g., either all CBGs are retransmission versions or part of the CGBs are retransmission versions.