User equipments, base stations and methods for beam indication of network-controlled repeater

A base station apparatus that communicates with a user equipment (UE) and a network-controlled repeater (NCR) apparatus, comprising:

• transmitting circuitry configured to:
• transmit a radio resource control (RRC) message comprising first information used for indicating a first list of Transmission Configuration Indicator (TCI) state(s) for beam(s) associated with backhaul-link and/or C-link;
• transmit an RRC message comprising second information used for indicating a second list of Transmission Configuration Indicator (TCI) state(s) for beam(s) associated with access link;
• transmit a first media access control (MAC) Control Element (CE) message comprising third information used for indicating a first TCI state for physical downlink control channel (PDCCH) carried by the backhaul-link and/or the C-link from the first list;
• transmit a second media access control (MAC) Control Element (CE) message comprising fourth information used for indicating a second TCI state for physical downlink control channel (PDCCH) carried by the access link from the second list;
• and
• transmit a physical downlink control channel (PDCCH) carried by the backhaul-link and/or the C-link according to the first TCI state.

A user equipment (UE) that communicates with a network-controlled repeater (NCR) apparatus and a base station apparatus, comprising:

• receiving circuitry configured to:
• receive an RRC message comprising second information used for indicating a second list of Transmission Configuration Indicator (TCI) state(s) for beam(s) associated with access link;
• receive a second media access control (MAC) Control Element (CE) message comprising fourth information used for indicating a second TCI state for physical downlink control channel (PDCCH) carried by the access link from the second list;
• and
• receive a physical downlink control channel (PDCCH) carried by the access-link according to the second TCI state.