User equipment and base station device

A base station comprising:

• a transmitter that transmits, to a terminal:
• radio resource control (RRC) signaling indicating transmission configuration states related to quasi co-location (QCL) applied to a downlink shared channel;
• media access control (MAC) signaling;
• and
• downlink control information (DCI);
• and
• a processor that applies the transmission configuration states to the downlink shared channel based on the RRC signaling, the MAC signaling, and the DCI, wherein
• the RRC signaling includes information indicating a first number of transmission configuration states,
• the MAC signaling includes information that maps each of a second number of transmission configuration states among the first number of transmission configuration states to a corresponding codepoint, and
• the DCI includes a field for indicating the codepoint.

A communication system comprising:

• a terminal;
• and a base station, wherein
• the terminal includes:
• a receiver that receives, from the base station:
• radio resource control (RRC) signaling indicating transmission configuration states related to quasi co-location (QCL) applied to a downlink shared channel;
• media access control (MAC) signaling;
• and
• downlink control information (DCI);
• and
• a processor of the terminal that applies the transmission configuration states to the downlink shared channel based on the RRC signaling, the MAC signaling, and the DCI, and
• the base station includes:
• a transmitter that transmits, to the terminal:
• the RRC signaling indicating transmission configuration states related to the QCL applied to the downlink shared channel;
• the MAC signaling;
• and
• the DCI;
• and
• a processor of the base station that applies the transmission configuration states to the downlink shared channel based on the RRC signaling, the MAC signaling, and the DCI, wherein
• the RRC signaling includes information indicating a first number of transmission configuration states,
• the MAC signaling includes information that maps each of a second number of transmission configuration states among the first number of transmission configuration states to a corresponding codepoint, and
• the DCI includes a field for indicating the codepoint.

A communication method comprising:

• receiving, by a terminal, from a base station:
• radio resource control (RRC) signaling indicating transmission configuration states related to quasi co-location (QCL) applied to a downlink shared channel;
• media access control (MAC) signaling;
• and
• downlink control information (DCI);
• and
• applying the transmission configuration states to the downlink shared channel based on the RRC signaling, the MAC signaling, and the DCI, wherein
• the RRC signaling includes information indicating a first number of transmission configuration states,
• the MAC signaling includes information that maps each of a second number of transmission configuration states among the first number of transmission configuration states to a corresponding codepoint, and
• the DCI includes a field for indicating the codepoint.