Transmission direction configuration method, device, and system

A terminal device, comprising at least one processor, and a memory, wherein the memory stores an execution instruction;

• and the at least one processor executes the execution instruction to enable the terminal device to perform the following:
• receiving an initial configuration information from a network device through a radio resource control (RRC) signaling, wherein the initial configuration information comprises a correspondence between at least one index value and at least one corresponding transmission directions configuration of an indexed list of transmission directions configurations;
• receiving a first indication information from the network device through a physical downlink control channel (PDCCH), wherein the first indication information comprises an index value of the at least one index value;
• determining, based on the index value of the at least one index value and the initial configuration information, a first configuration of the transmission directions for the terminal device;
• wherein one of the transmission directions configurations describes types and a distribution of orthogonal frequency division multiplexing (OFDM) symbol(s) comprised in each period in a time duration that starts from a time point, wherein the time duration is equal to or larger than one period;
• wherein, the types of orthogonal frequency division multiplexing (OFDM) symbol(s) comprises uplink OFDM symbol(s) or downlink OFDM symbol(s), and
• wherein the period is a monitoring period.

A non-transitory computer readable medium comprising instructions which, when executed by a computer, cause the computer to carry out the following:

• receiving an initial configuration information from a network device through a radio resource control (RRC) signaling, wherein the initial configuration information comprises a correspondence between at least one index value and at least one corresponding transmission directions configuration of an indexed list of transmission directions configurations;
• receiving a first indication information from the network device through a physical downlink control channel (PDCCH), wherein the first indication information comprises an index value of the at least one index value;
• determining, based on the index value of the at least one index value and the initial configuration information, a first configuration of the transmission directions for the terminal device;
• wherein one of the transmission directions configurations describes types and a distribution of orthogonal frequency division multiplexing (OFDM) symbol(s) comprised in each period in a time duration that starts from a time point, wherein the time duration is equal to or larger than one period;
• wherein, the types of orthogonal frequency division multiplexing (OFDM) symbol(s) comprises uplink OFDM symbol(s) or downlink OFDM symbol(s), and
• wherein the period is a monitoring period.