Method for reporting channel state information, user equipment, and base station

1. A user equipment comprising:

a processor; and

a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to:

receive a sounding signal set sent by a base station, wherein the sounding signal set comprises at least one sounding signal;

determine a reference signal resource configuration index according to the sounding signal set, wherein the reference signal resource configuration index indicates a first reference signal resource configuration in reference signal resource configuration set information;

determine channel state information according to a reference signal set, wherein the reference signal set corresponds to the first reference signal resource configuration indicated by the reference signal resource configuration index; and

send, to the base station, the reference signal resource configuration index and the channel state information.

2. The user equipment according to claim 1 , wherein the program further comprises instructions to receive the reference signal resource configuration set information sent by the base station, wherein the reference signal resource configuration set information comprises at least two reference signal resource configurations, and the at least two reference signal resource configurations comprise the first reference signal resource configuration.

3. The user equipment according to claim 1 , wherein the at least one sounding signal comprises a channel state information reference signal (CSI RS).

4. The user equipment according to claim 1 , wherein the at least one sounding signal comprises a synchronization signal, and the reference signal resource configuration index comprises a resource identifier, and the resource identifier is carried in the synchronization signal or is associated with a resource location of the synchronization signal.

5. The user equipment according to claim 1 , wherein the at least one sounding signal comprises a broadcast channel, wherein the reference signal resource configuration index comprises a resource identifier, and the resource identifier is carried in the broadcast channel or is associated with a resource location of the broadcast channel.

6. The user equipment according to claim 1 , wherein the reference signal resource configuration information comprises antenna port information, reference signal configuration information, or reference signal sequence information, and wherein the reference signal configuration information indicates a resource element used for sending a reference signal on an antenna port.

7. The user equipment according to claim 6 , wherein antenna port sets corresponding to two reference signal resource configurations have at least one same antenna port.

8. A base station comprising:

a processor; and

a non-transitory computer readable storage medium storing a program for execution by the processor, the program including instructions to:

send, to a user equipment, a sounding signal set, wherein the sounding signal set comprises at least one sounding signal, and wherein the user equipment determines a reference signal resource configuration index according to the sounding signal set, wherein the reference signal resource configuration index indicates a first reference signal resource configuration in a reference signal resource configuration set, and the first reference signal resource configuration is used for obtaining channel state information; and

receive the reference signal resource configuration index and the channel state information that are sent by the user equipment, wherein the channel state information corresponds to a reference signal set, and the reference signal set corresponds to the first reference signal resource configuration indicated by the reference signal resource configuration index.

9. The base station according to claim 8 , wherein the program further comprises instructions to send the reference signal resource configuration set information to the user equipment, wherein the reference signal resource configuration set information comprises at least two reference signal resource configurations, and the at least two reference signal resource configurations comprises the first reference signal resource configuration.

10. The base station according to claim 8 , wherein the at least one sounding signal is a channel state information reference signal (CSI RS).

11. The base station according to claim 8 , wherein the at least one sounding signal comprises a synchronization signal, the reference signal resource configuration index comprises a resource identifier, and the resource identifier is carried in the synchronization signal or is associated with a resource location of the synchronization signal.

12. The base station according to claim 8 , wherein the at least one sounding signal comprises a broadcast channel, the reference signal resource configuration index comprises a resource identifier, and the resource identifier is carried in the broadcast channel or is associated with a resource location of the broadcast channel.

13. The base station according to claim 8 , wherein the reference signal resource configuration set information comprises antenna port information, reference signal configuration information, or reference signal sequence information, and wherein the reference signal configuration information indicates a resource element used for sending a reference signal on an antenna port.

14. The base station according to claim 13 , wherein antenna port sets corresponding to at least two reference signal resource configurations have at least one same antenna port.

15. A method comprising:

receiving, by a user equipment, a sounding signal set sent by a base station, wherein the sounding signal set comprises at least one sounding signal;

determining, by the user equipment, a reference signal resource configuration index according to the sounding signal set, wherein the reference signal resource configuration index indicates a first reference signal resource configuration in reference signal resource configuration set information;

determining, by the user equipment, channel state information according to a reference signal set, wherein the reference signal set corresponds to the first reference signal resource configuration indicated by the reference signal resource configuration index; and

sending, by the user equipment to the base station, the reference signal resource configuration index and the channel state information.

16. The method according to claim 15 , further comprising:

receiving, by the user equipment, the reference signal resource configuration set information sent by the base station, wherein the reference signal resource configuration set information comprises at least two reference signal resource configurations, and the at least two reference signal resource configurations comprise the first reference signal resource configuration.

17. The method according to claim 15 , wherein the at least one sounding signal comprises a channel state information reference signal (CSI RS).

18. The method according to claim 15 , wherein the at least one sounding signal comprises a synchronization signal, the reference signal resource configuration index is a resource identifier, and the resource identifier is carried in the synchronization signal or is associated with a resource location of the synchronization signal.

19. The method according to claim 15 , wherein the at least one sounding signal is a broadcast channel, the reference signal resource configuration index is a resource identifier, and the resource identifier is carried in the broadcast channel or is associated with a resource location of the broadcast channel.

20. The method according to claim 15 , wherein the reference signal resource configuration information comprises antenna port information, reference signal configuration information, or reference signal sequence information, and wherein the reference signal configuration information indicates a resource element used for sending a reference signal on an antenna port.