Network Node, UE and Methods Therein for Detecting a Damaged Transmission of Data Due to Data Puncturing

A method performed by a network node for handling a damaged transmission of data due to data puncturing, the method comprising:

• receiving, from a User Equipment (UE), a Negative Acknowledgment (NACK) feedback of a previous transmission of data transmitted to the UE;
• checking whether or not the data is punctured in the previous transmission corresponding to the NACK feedback;
• when the data is punctured in the previous transmission, selecting a Redundancy Version (RV) for a retransmission of the data, according to characteristics of the punctured data and puncturing data;
• and
• sending a Puncturing Indication (PI), the selected RV, and the retransmission of the data to the UE.

A method performed by a User Equipment (UE) for detecting a damaged transmission of data due to data puncturing, the method comprising:

• receiving, from a network node, a retransmission of data of a previous transmission transmitted to the UE by the network node, a Puncturing Indication (PI), and a Redundancy Version (RV) for the retransmission;
• checking the PI to determine whether or not the data is punctured in the previous transmission of data;
• and
• detecting the puncturing data based on the RV when the data is punctured in the previous transmission.

A network node for handling a damaged transmission of data due to data puncturing, the network node comprising:

• processing circuitry;
• and
• memory containing instructions executable by the processing circuitry whereby the network node is operative to:
• receive, from a User Equipment (UE), a Negative Acknowledgment (NACK) feedback of a previous transmission of data transmitted to the UE;
• check whether or not the data is punctured in the previous transmission corresponding to the NACK feedback;
• when the data is punctured in the previous transmission, select a Redundancy Version (RV) for a retransmission of the data, according to characteristics of the punctured data and puncturing data;
• and
• send a Puncturing Indication (PI), the selected RV, and the retransmission of the data to the UE.

A User Equipment (UE) for detecting a damaged transmission of data due to data puncturing, the UE comprising:

• processing circuitry;
• and
• memory containing instructions executable by the processing circuitry whereby the UE is operative to:
• receive, from a network node, a retransmission of data of a previous transmission transmitted to the UE by the network node, a Puncturing Indication (PI), and a Redundancy Version (RV) for the retransmission;
• check the PI whether or not the data is punctured in the previous transmission of data;
• and
• detect the puncturing data based on the RV when the data is punctured in the previous transmission.