Method and device for configuring channel information, and method and device for channel information feedback

1. A method for configuring channel information, comprising:

configuring, by a base station, Q Channel State Information (CSI) measurement threads for a CSI process, wherein Q is an integer greater than or equal to 2; and

configuring, by the base station, P1 channel measurement reference signals and P2 interference measurement resources for the Q CSI measurement threads, wherein the P1 channel measurement reference signals are used to perform channel measurement on the Q CSI measurement threads, and the P2 interference measurement resources are used to perform interference measurement on the Q CSI measurement threads, P1 and P2 being integers greater than zero;

performing, by the terminal, CSI measurement and CSI feedback operations on the Q CSI measurement threads according to the P1 channel measurement reference signals and the P2 interference measurement resources, and selecting Y CSI measurement threads from the Q CSI measurement threads undergoing the CSI measurement and CSI feedback operations.

2. The method as claimed in claim 1 , wherein channel measurement reference signals corresponding to the Q CSI measurement threads are the same, and interference measurement resources corresponding to at least two CSI measurement threads in the Q CSI measurement threads are different;

or, interference resource measurement reference signals corresponding to the Q CSI measurement threads are the same, and interference measurement resources corresponding to at least two CSI measurement threads in the Q CSI measurement threads are different.

3. The method as claimed in claim 1 , wherein at least two different types of reference signals exist in the channel measurement reference signals corresponding to the Q CSI measurement threads.

4. The method as claimed in claim 1 , further comprising:

configuring, by the base station, a CSI quantization and/or feedback way for the Q CSI measurement threads.

5. The method as claimed in claim 4 , wherein configuring, by the base station, a CSI quantization and/or feedback way for the Q CSI measurement threads comprises:

configuring, by the base station, a channel RANK or LAYER calculation way for the Q CSI measurement threads; and/or,

configuring, by the base station, a Rank Indication (RI) calculation way for the Q CSI measurement threads; and/or,

configuring, by the base station, a used codebook quantization method for the Q CSI measurement threads; and/or,

configuring, by the base station, a CSI feedback mode for the Q CSI measurement threads.

6. The method as claimed in claim 5 , wherein at least X CSI measurement threads in the Q CSI measurement threads are used for channel information feedback of X RANK or LAYER groups respectively.

7. The method as claimed in claim 6 , wherein

when X is 2,

a RANK or LAYER group 1 is RANK or LAYER={1, 2}, and a RANK or LAYER group 2 is RANK or LAYER={3, 4}; or,

a RANK or LAYER group 1 is RANK or LAYER={1, 2}, and a RANK or LAYER group 2 is RANK or LAYER={1, 2, 3, 4}; or,

a RANK or LAYER group 1 is RANK or LAYER={1, 2}, and a RANK or LAYER group 2 is RANK or LAYER={3-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1-4}, and a RANK or LAYER group 2 is RANK or LAYER={5-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1-4}, and a RANK or LAYER group 2 is RANK or LAYER={1-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1}, and a RANK or LAYER group 2 is RANK or LAYER={2} or RANK or LAYER={2-4} or {2-8} or {1-2} or {1-4} or {1-8};

when X is 3,

a RANK or LAYER group 1 is RANK or LAYER={1, 2}, a RANK or LAYER group 2 is RANK or LAYER={3, 4}, and a RANK or LAYER group 3 is RANK or LAYER={5-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1, 2}, a RANK or LAYER group 2 is RANK or LAYER={1-4}, and a RANK or LAYER group 3 is RANK or LAYER={1-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1}, a RANK or LAYER group 2 is {2}, and a RANK or LAYER group 2 is {3, 4}; or,

a RANK or LAYER group 1 is RANK or LAYER={1}, a RANK or LAYER group 2 is {2}, and a RANK or LAYER group 2 is {3-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1}, a RANK or LAYER group 2 is {2-4}, and a RANK or LAYER group 2 is {5, 8}.

8. A channel information feedback method, comprising:

acquiring, by a terminal, configuration information of Q Channel State Information (CSI) measurement threads corresponding to a CSI process, wherein the configuration information comprises: P1 channel measurement reference signals and P2 interference measurement resources, the P1 channel measurement reference signals are used to perform channel measurement on the Q CSI measurement threads, and the P2 interference measurement resources are used to perform interference measurement on the Q CSI measurement threads, P1 and P2 being integers greater than zero; and

performing, by the terminal, CSI measurement and CSI feedback operations on the Q CSI measurement threads according to the P1 channel measurement reference signals and the P2 interference measurement resources, and selecting Y CSI measurement threads from the Q CSI measurement threads undergoing the CSI measurement and CSI feedback operations.

9. The method as claimed in claim 8 , wherein channel measurement reference signals corresponding to the Q CSI measurement threads are the same, and interference measurement resources corresponding to at least two CSI measurement threads in the Q CSI measurement threads are different;

or, interference resource measurement reference signals corresponding to the Q CSI measurement threads are the same, and interference measurement resources corresponding to at least two CSI measurement threads in the Q CSI measurement threads are different.

10. The method as claimed in claim 8 , wherein at least two different types of reference signals exist in the channel measurement reference signals corresponding to the Q CSI measurement threads.

11. The method as claimed in claim 8 , wherein the configuration information is further used to instruct a base station to configure a CSI quantization and/or feedback way for the Q CSI measurement threads.

12. The method as claimed in claim 11 , wherein the CSI quantization and/or feedback way comprises at least one of the following: a channel RANK or LAYER calculation way; a Rank Indication (RI) calculation way; a used codebook quantization method; and a CSI feedback mode.

13. The method as claimed in claim 12 , wherein at least X CSI measurement threads in the Q CSI measurement threads are used for channel information feedback of X RANK or LAYER groups respectively.

14. The method as claimed in claim 13 , wherein

when X is 2,

a RANK or LAYER group 1 is RANK={1, 2} or LAYER={1, 2}, and a RANK or LAYER group 2 is RANK or LAYER={3, 4}; or,

a RANK or LAYER group 1 is RANK or LAYER={1, 2}, and a RANK or LAYER group 2 is RANK or LAYER={1, 2, 3, 4}; or,

a RANK or LAYER group 1 is RANK or LAYER={1, 2}, and a RANK or LAYER group 2 is RANK or LAYER={3-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1-4}, and a RANK or LAYER group 2 is RANK or LAYER={5-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1-4}, and a RANK or LAYER group 2 is RANK or LAYER={1-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1}, and a RANK or LAYER group 2 is RANK or LAYER={2} or RANK or LAYER={2-4} or {2-8} or {1-2} or {1-4} or {1-8};

when X is 3,

a RANK or LAYER group 1 is RANK or LAYER={1, 2}, a RANK or LAYER group 2 is RANK or LAYER={3, 4}, and a RANK or LAYER group 3 is RANK or LAYER={5-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1, 2}, a RANK or LAYER group 2 is RANK or LAYER={1-4}, and a RANK or LAYER group 3 is RANK or LAYER={1-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1}, a RANK or LAYER group 2 is {2}, and a RANK or LAYER group 2 is {3, 4}; or,

a RANK or LAYER group 1 is RANK or LAYER={1}, a RANK or LAYER group 2 is {2}, and a RANK or LAYER group 2 is {3-8}; or,

a RANK or LAYER group 1 is RANK or LAYER={1}, a RANK or LAYER group 2 is {2-4}, and a RANK or LAYER group 2 is {5, 8}.

15. A device for configuring channel information, located at a base station, comprising:

a first configuration module, configured to configure Q Channel State Information (CSI) measurement threads for a CSI process, wherein Q is an integer greater than or equal to 2; and

a second configuration module, configured to configure P1 channel measurement reference signals and P2 interference measurement resources for the Q CSI measurement threads, wherein the P1 channel measurement reference signals are used to perform channel measurement on the Q CSI measurement threads, and the P2 interference measurement resources are used to perform interference measurement on the Q CSI measurement threads, P1 and P2 being integers greater than zero.

16. The device as claimed in claim 15 , wherein channel measurement reference signals corresponding to the Q CSI measurement threads are the same, and interference measurement resources corresponding to at least two CSI measurement threads in the Q CSI measurement threads are different;

or, interference resource measurement reference signals corresponding to the Q CSI measurement threads are the same, and interference measurement resources corresponding to at least two CSI measurement threads in the Q CSI measurement threads are different.

17. The device as claimed in claim 15 , wherein at least two different types of reference signals exist in the channel measurement reference signals corresponding to the Q CSI measurement threads.

18. The device as claimed in claim 15 , further comprising:

a third configuration module, configured to configure a CSI quantization and/or feedback way for the Q CSI measurement threads.

19. A channel information feedback device, located at a terminal, comprising:

an acquisition module, configured to acquire configuration information of Q Channel State Information (CSI) measurement threads corresponding to a CSI process, wherein the configuration information comprises: P1 channel measurement reference signals and P2 interference measurement resources, the P1 channel measurement reference signals are used to perform channel measurement on the Q CSI measurement threads, and the P2 interference measurement resources are used to perform interference measurement on the Q CSI measurement threads, P1 and P2 being integers greater than zero; and

a selection module, configured to execute, by the terminal, CSI measurement and CSI feedback operations on the Q CSI measurement threads according to the P1 channel measurement reference signals and the P2 interference measurement resources, and select Y CSI measurement threads from the Q CSI measurement threads undergoing the CSI measurement and CSI feedback operations.

20. The device as claimed in claim 19 , wherein channel measurement reference signals corresponding to the Q CSI measurement threads are the same, and interference measurement resources corresponding to at least two CSI measurement threads in the Q CSI measurement threads are different;

or, interference resource measurement reference signals corresponding to the Q CSI measurement threads are the same, and interference measurement resources corresponding to at least two CSI measurement threads in the Q CSI measurement threads are different.