CSI reporting method, CSI receiving method, and corresponding apparatus

1 . A channel state information (CSI) reporting method, comprising:

in response to receiving a preset message,

performing a configuration process corresponding to the preset message, wherein the configuration process has a configuration delay during which CSI is not obtainable, and

setting a CSI state to invalid;

determining the CSI state upon arrival of a CSI reading occasion; and

sending preset CSI in response to determining the CSI state as being invalid, wherein the CSI state is determined as invalid in response to the CSI reading occasion arriving within the configuration delay.

2 . The method according to claim 1 , wherein the preset message is:

a serving cell activation message; or

a bandwidth part switching message.

3 . The method according to claim 1 , wherein

the CSI reading occasion is associated with a CSI reporting occasion and arrives before the CSI reporting occasion, and

the sending the preset CSI is sending the preset CSI in response to arrival of the CSI reporting occasion.

4 . The method according to claim 1 , wherein

the sending the preset CSI comprises sending the preset CSI to a network device to indicate to the network device that the CSI state is invalid and that the network device is to discard the preset CSI.

5 . The method according to claim 1 , wherein the preset message is one selected from the group consisting of:

a CSI report configuration message;

a CSI reconfiguration message; and

a semi-persistent CSI reporting activation message.

6 . The method according to claim 1 , further comprising, after the setting the CSI state to invalid in response to the preset message:

setting the CSI state to valid in response to obtaining the CSI through calculation.

7 . The method according to claim 1 , wherein the preset CSI is default CSI.

8 . A communication apparatus, comprising:

a transceiver;

at least one processor; and

one or more memories coupled to the at least one processor and storing programming instructions which are executable by the at least one processor to cause the communication apparatus to:

in response to receiving a preset message,

perform a configuration process corresponding to the preset message, wherein the configuration process has a configuration delay during which channel state information (CSI) is not obtainable, and

set a CSI state to invalid:

determine the CSI state upon arrival of a CSI reading occasion; and

send preset CSI in response to determining the CSI state as being invalid, wherein the CSI state is determined as invalid in response to the CSI reading occasion arriving within the configuration delay.

9 . The apparatus according to claim 8 , wherein the preset message is:

a serving cell activation message; or

a bandwidth part switching message.

10 . The apparatus according to claim 8 , wherein

the CSI reading occasion is associated with a CSI reporting occasion and arrives before the CSI reporting occasion, and

the programming instructions are executable by the at least one processor to further cause the communication apparatus to send the preset CSI in response to arrival of the CSI reporting occasion.

11 . The apparatus according to claim 8 , wherein the programming instructions are executable by the at least one processor to further cause the communication apparatus to send the preset CSI to a network device to indicate to the network device that the CSI state is invalid and that the network device is to discard the preset CSI.

12 . The apparatus according to claim 8 , wherein the preset message is one selected from the group consisting of:

a CSI report configuration message;

a CSI reconfiguration message; and

a semi-persistent CSI reporting activation message.

13 . The apparatus according to claim 8 , wherein the programming instructions are executable by the at least one processor to further cause the communication apparatus to:

after setting the CSI state to invalid in response to the preset message, set the CSI state to valid in response to obtaining the CSI through calculation.

14 . The apparatus according to claim 8 , wherein the preset CSI is default CSI.

15 . A non-transitory computer-readable storage medium, comprising programs or instructions executable by a computer to cause the computer to perform operations comprising:

in response to receiving a preset message,

performing a configuration process corresponding to the preset message, wherein the configuration process has a configuration delay during which channel state information (CSI) is not obtainable, and

setting a CSI state to invalid;

determining the CSI state upon arrival of a CSI reading occasion; and

sending preset CSI in response to determining the CSI state as being invalid, wherein the CSI state is determined as invalid in response to the CSI reading occasion arriving within the configuration delay.

16 . The non-transitory computer-readable storage medium according to claim 15 , wherein the preset message is: a serving cell activation message; or a bandwidth part switching message.

17 . The non-transitory computer-readable storage medium according to claim 15 , wherein the sending the preset CSI is sending the preset CSI to a network device to indicate to the network device that the CSI state is invalid and that the network device is to discard the preset CSI.

18 . The non-transitory computer-readable storage medium according to claim 15 , wherein the operations further comprise, after the setting the CSI state to invalid in response to the preset message: setting the CSI state to valid in response to obtaining the CSI through calculation.

19 . The non-transitory computer-readable storage medium according to claim 15 , wherein the preset message is one selected from the group consisting of: a CSI report configuration message; a CSI reconfiguration message; and a semi-persistent CSI reporting activation message.

20 . The non-transitory computer-readable storage medium according to claim 15 , wherein the preset CSI is default CSI.