Quasi co-location information determining method, apparatus, and device

A communications apparatus, comprising at least one processor, wherein the at least one processor is coupled to a memory;

• wherein the memory is configured to store a computer program, and wherein the computer program stored in the memory, when executed by the at least one processor, enables the apparatus to perform operations comprising:
• determining two pieces of quasi co-location (QCL) information of antenna ports of a demodulation reference signal (DMRS) of a data channel based on a predetermined rule in response to determining that a QCL configuration information indicates a QCL type D, and an offset between the data channel and a reception of downlink control information (DCI) scheduling the data channel is less than a threshold, wherein the QCL configuration information includes at least two transmission configuration indication (TCI) states, and the predetermined rule comprises one piece of indication information with smallest identifiers among an indication information set, wherein each indication information in the indication information set is associated with two reference signal (RS) sets and is used to indicate QCL information of antenna ports of the DMRS, each of the two RS sets comprising one or more RS;
• and
• performing a communication on the data channel based on the determined two pieces of QCL information of the antenna ports of the DMRS of the data channel.