Configuration method and apparatus for transmission configuration indication

1. A method for configuring transmission configuration indication (TCI), wherein the method is performed by a base station and comprises:

transmitting, after establishing a radio resource control (RRC) connection with a terminal, an activation signaling to the terminal, wherein the activation signaling is to activate all TCI states of a target TCI group, and the target TCI group comprises a plurality of TCI states; and

transmitting a configuration signaling to the terminal, wherein the configuration signaling is to instruct the terminal to receive a physical downlink channel scheduled by the configuration signaling through a target receiving beam, the physical downlink channel is a physical downlink control channel (PDCCH) and the configuration signaling is a downlink control information (DCI) signaling, the target receiving beam is a receiving beam for a reference signal corresponding to a target TCI state, and the target TCI state is a TCI state of the target TCI group indicated by the configuration signaling.

2. The method according to claim 1 , wherein before transmitting the activation signaling to the terminal, the method further comprises:

transmitting, through a target RRC signaling, a TCI state correspondence table to the terminal, wherein the TCI state correspondence table comprises a correspondence between a TCI state identifier and a signal identifier, the TCI state identifier comprises a state identifier of each TCI state, and the signal identifier comprises an identifier of a reference signal for a current TCI state.

3. The method according to claim 2 , wherein the target RRC signaling further comprises grouping indication information, the grouping indication information indicating a TCI group corresponding to each TCI state identifier in the TCI state correspondence table.

4. The method according to claim 1 , wherein transmitting the activation signaling to the terminal comprises:

transmitting, to the terminal, the activation signaling which indicates whether all TCI states of each TCI group are activated.

5. The method according to claim 1 , wherein transmitting the configuration signaling to the terminal comprises:

determining a serial number corresponding to each TCI state of the target TCI group by sorting all TCI states of the target TCI group in an ascending order of TCI state identifiers;

determining a target serial number corresponding to the target TCI state; and

transmitting, to the terminal, the configuration signaling carrying the target serial number.

6. A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of a base station, cause the base station to perform the method according to claim 1 .

7. A method for configuring a transmission configuration indication (TCI), wherein the method is performed by a terminal, and comprises:

receiving, after establishing a radio resource control (RRC) connection with a base station, an activation signaling from the base station;

activating all TCI states of a target TCI group indicated by the activation signaling, wherein the target TCI group comprises a plurality of TCI states;

determining a target receiving beam after receiving a configuration signaling from the base station, wherein the target receiving beam is a receiving beam for a reference signal corresponding to a target TCI state, and the target TCI state is a TCI state of the target TCI group indicated by the configuration signaling; and

receiving, through the target receiving beam, a physical downlink channel scheduled by the configuration signaling, wherein the physical downlink channel is a physical downlink control channel (PDCCH) and the configuration signaling is a downlink control information (DCI) signaling.

8. The method according to claim 7 , wherein, before receiving the activation signaling from the base station, the method further comprises:

receiving, through a target RRC signaling, a TCI state correspondence table from the base station, wherein the TCI state correspondence table includes a correspondence between a TCI state identifier and a signal identifier, the TCI state identifier comprises a state identifier of each TCI state, and the signal identifier comprises an identifier of a reference signal for a current TCI state.

9. The method according to claim 8 , wherein the target RRC signaling further comprises grouping indication information, the grouping indication information indicating a TCI group corresponding to each TCI state identifier in the TCI state correspondence table.

10. The method according to claim 8 , wherein determining the target receiving beam after receiving the configuration signaling from the base station comprises:

determining a serial number of each TCI state of the target TCI group by sorting all TCI states of the target TCI group in an ascending order of TCI state identifiers;

determining a TCI state whose serial number matches a target serial number carried by the configuration signaling as a target TCI state;

determining a target signal identifier corresponding to a target TCI state identifier of the target TCI state from the TCI state correspondence table; and

taking a receiving beam for receiving a target reference signal as a target receiving beam, wherein the target reference signal is a reference signal indicated by the target signal identifier.

11. A non-transitory computer-readable storage medium having stored therein instructions that, when executed by a processor of a terminal, cause the terminal to perform the method according to claim 7 .

12. A terminal, comprising:

a processor; and

a memory configured to store instructions executable by the processor;

wherein the processor is configured to perform the method according to claim 7 .

13. The terminal according to claim 12 , wherein, before receiving the activation signaling from the base station, the processor is further configured to:

receive, through a target RRC signaling, a TCI state correspondence table from the base station, wherein the TCI state correspondence table includes a correspondence between a TCI state identifier and a signal identifier, the TCI state identifier comprises a state identifier of each TCI state, and the signal identifier comprises an identifier of a reference signal for a current TCI state.

14. The terminal according to claim 13 , wherein the target RRC signaling further comprises grouping indication information, the grouping indication information indicating a TCI group corresponding to each TCI state identifier in the TCI state correspondence table.

15. The terminal according to claim 13 , wherein in determining the target receiving beam after receiving the configuration signaling from the base station, the processor is further configured to:

determine a serial number of each TCI state of the target TCI group by sorting all TCI states of the target TCI group in an ascending order of TCI state identifiers;

determine a TCI state whose serial number matches a target serial number carried by the configuration signaling as a target TCI state;

determine a target signal identifier corresponding to a target TCI state identifier of the target TCI state from the TCI state correspondence table; and

take a receiving beam for receiving a target reference signal as a target receiving beam, wherein the target reference signal is a reference signal indicated by the target signal identifier.

16. A base station, comprising:

a processor; and

a memory configured to store instructions executable by the processor;

wherein the processor is configured to:

transmit, after establishing a radio resource control (RRC) connection with a terminal, an activation signaling to the terminal, wherein the activation signaling is to activate all transmission configuration indication (TCI) states of a target TCI group, and the target TCI group comprises a plurality of TCI states; and

transmit a configuration signaling to the terminal, wherein the configuration signaling is to instruct the terminal to receive a physical downlink channel scheduled by the configuration signaling through a target receiving beam, the physical downlink channel is a physical downlink control channel (PDCCH) and the configuration signaling is a downlink control information (DCI) signaling, the target receiving beam is a receiving beam for a reference signal corresponding to a target TCI state, and the target TCI state is a TCI state of the target TCI group indicated by the configuration signaling.

17. The base station according to claim 16 , wherein before transmitting the activation signaling to the terminal, the processor is further configured to:

transmit, through a target RRC signaling, a TCI state correspondence table to the terminal, wherein the TCI state correspondence table comprises a correspondence between a TCI state identifier and a signal identifier, the TCI state identifier comprises a state identifier of each TCI state, and the signal identifier comprises an identifier of a reference signal for a current TCI state.

18. The base station according to claim 17 , wherein the target RRC signaling further comprises grouping indication information, the grouping indication information indicating a TCI group corresponding to each TCI state identifier in the TCI state correspondence table.

19. The base station according to claim 16 , wherein in transmitting the activation signaling to the terminal, the processor is further configured to:

transmit, to the terminal, the activation signaling which indicates whether all TCI states of each TCI group are activated.

20. The base station according to claim 16 , wherein in transmitting the configuration signaling to the terminal, the processor is further configured to:

determine a serial number corresponding to each TCI state of the target TCI group by sorting all TCI states of the target TCI group in an ascending order of TCI state identifiers;

determine a target serial number corresponding to the target TCI state; and

transmit, to the terminal, the configuration signaling carrying the target serial number.