Medium access control (MAC) control element signaling for multi-transmission point/multi panel physical downlink shared channel transmission

A method implemented in a wireless device, (WD) the method comprising:

• receiving within a medium access control (MAC) control element (CE) message, from a network node, an indication of a plurality Kj of Transmission Configuration Indication (TCI) states that are mapped to a single codepoint, j, of a plurality of codepoints in a downlink control information (DCI) TCI field of a DCI, Kj and j being integers;
• and
• receiving within the MAC CE message, from the network node, the number Kj of TCI states being mapped to the single codepoint j and for each single codepoint j in the plurality of codepoints, the number Kj of TCI states has a value from a plurality of possible values;
• and
• selecting a TCI state based on an indication of at least one demodulation reference signal (DMRS) port in an antenna ports field in the DCI.

A wireless device (WD) configured to communicate with a network node, the wireless device comprising processing circuitry, the processing circuitry configure to cause the wireless device to:

• receive within a medium access control (MAC) control element (CE) message, from the network node, an indication of a plurality Kj of Transmission Configuration Indication (TCI) states that are mapped to a single codepoint, j, of a plurality of codepoints in a downlink control information (DCI) TCI field of a DCI, Kj and j being integers;
• receive within the MAC CE message, from the network node, the number Kj of TCI states being mapped to the single codepoint j and for each single codepoint j in the plurality of codepoints, the number Kj of TCI states has a value from a plurality of possible values;
• and
• select a TCI state based on an indication of at least one demodulation reference signal (DMRS) port in an antenna ports field in the DCI.