Mac ce signaling for supporting both joint dl/ul tci and separate dl/ul tci operations

A User Equipment, UE, for mapping Transmission Configuration Indication, TCI, states to TCI field codepoints in a Downlink Control information, DCI, the UE adapted to:

• receive a Medium Access Control, MAC, Control Element, CE, message from a network node;
• and
• receive a DCI from the network node, the DCI comprising a TCI field set to one of a plurality of TCI field codepoints;
• wherein:
• the MAC CE maps TCI states to at least some of the plurality of TCI field codepoints;
• the MAC CE comprises a first field that indicates whether a first TCI state indicated by the MAC CE that is mapped to a first TCI field codepoint in the DCI is a downlink, DL, TCI state or an uplink, UL, TCI state;
• and
• a second field that indicates whether the MAC CE further indicates whether the first TCI field codepoint indicates one or multiple TCI states, and wherein in response to the second field indicating multiple TCI states, the first TCI field codepoint indicates both a DL TCI state and an UL TCI state.

A User Equipment, UE, for mapping Transmission Configuration Indication, TCI, states to TCI field codepoints in a Downlink Control information, DCI, the UE comprising:

• one or more transmitters;
• one or more receivers;
• and
• processing circuitry associated with the one or more transmitters and the one or more receivers, the processing circuitry configured to cause the UE to:
• receive a Medium Access Control, MAC, Control Element, CE, message from a network node;
• and
• receive a DCI from the network node, the DCI comprising a TCI field set to one of a plurality of TCI field codepoints;
• wherein:
• the MAC CE maps TCI states to at least some of the plurality of TCI field codepoints;
• the MAC CE comprises a first field that indicates whether a first TCI state indicated by the MAC CE that is mapped to a first TCI field codepoint in the DCI is a downlink, DL, TCI state or an uplink, UL, TCI state;
• and
• the MAC CE comprises a second field that indicates whether the MAC CE further indicates whether the first TCI field codepoint indicates one or multiple TCI states, and wherein in response to the second field indicating multiple TCI states, the first TCI field codepoint indicates both a DL TCI state and an UL TCI state.