Method and node for decoding or encoding user data based on a joint tbs index and redundant version

A wireless device for handling user data, wherein the user data are converted into codewords, each codeword having a first group of layers and a second group of layers, the wireless device comprising:

• a communication interface configured to communicate with other nodes;
• processing circuitry configured to:
• receive an index from a network node, the index indicating a Transport Block Size (TBS) index, a Redundant Version (RV) and a differential modulation;
• determine a TBS based on the received index;
• determine a redundant version value based on the received index;
• determine a first modulation order for the first group of layers and a second modulation order for the second group of layers of a codeword, based at least on the differential modulation;
• perform one of decoding and encoding the codeword based at least on the determined first and second modulation orders, the determined TBS and the determined redundant version value;
• and
• power supply circuitry configured to supply power to the wireless device.

A method performed by a base station for allocating resources for a transmission of user data to a wireless device, the user data being converted into a codeword having a first group of layers and a second group of layers, the method comprising:

• determining the resources to be allocated to the wireless device;
• determining an index based at least on the determined resources allocated to the wireless device, wherein the index indicates a Transport Block Size (TBS) index, a Redundant Version (RV) and a differential modulation;
• and
• sending the determined index to the wireless device.

A network node for allocating resources for a transmission from a wireless device, the base station comprising:

• a communication interface configured to communicate with other nodes;
• processing circuitry configured to:
• determine the resources to be allocated to the wireless device;
• determine an index based at least on the determined resources allocated to the wireless device, wherein the index indicates a Transport Block Size (TBS) index, a Redundant Version (RV) and a differential modulation;
• and
• send the determined index to the wireless device;
• and
• power supply circuitry configured to supply power to the base station.