Method used for transmitting data, and terminal device

A network device, comprising:

• a transceiver configured to transmit downlink control information (DCI), wherein the DCI is used for scheduling physical downlink shared channel (PDSCH) transmission in multiple time domain resource units, and the DCI is further used for indicating K transmission configuration indicator (TCI) states, and K is a positive integer;
• wherein the transceiver is further configured to indicate at least one of following information:
• the number of code division multiplexing (CDM) groups to which an adopted demodulation reference signal (DMRS) port belongs, a configuration of PDSCH repetition transmission scheme, a configuration scheme for the number of the multiple time domain resource units, and a physical resource configuration in one time domain resource unit of the multiple time domain resource units, for a terminal device to determine from the K TCI states, a TCI state used for the PDSCH transmission in the multiple time domain resource units.