FLEXIBLE CHANNEL STATE INFORMATION FEEDBACK MANAGEMENT

• US 20150280877A1
• Filed: 02/09/2015
• Published: 10/01/2015
• Est. Priority Date: 03/28/2014
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Chen, Wanshi, Gaal, Peter, Xu, Hao
• Granted Patent: US 10,103,855 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0057 Physical resource allocation for CQI
• CPC Class Codes: H04W 24/10 Scheduling measurement reports ; Arrangements for measurement reports

Abstract

One method includes receiving at a user equipment (UE) information associated with two or more interference measurement resources (IMRs) for a channel state information (CSI) process, the information comprising an allocation of the two or more IMRs for the CSI process and a plurality of management configurations for use of the two or more IMRs; and using the two or more IMRs in accordance with the plurality of management configurations to perform one or both of channel measurement and CSI reporting. Another method includes transmitting information associated with two or more IMRs for a CSI process, the information comprising an allocation of the two or more IMRs for the CSI process and a plurality of management configurations for use of the two or more IMRs; and receiving at least one CSI report based on at least one of the two or more IMRs.

Claims

1. A method for wireless communication, comprising:

receiving at a user equipment (UE) information associated with a channel state information (CSI) process, the information comprising an allocation of two or more interference measurement resources (IMRs) for the CSI process and a plurality of management configurations for use of the two or more IMRs, wherein at least one of the plurality of management configurations is separately indicated for the two or more IMRs; and

using the two or more IMRs in accordance with the plurality of management configurations to perform one or both of channel measurement and CSI reporting.

2. The method of claim 1, wherein all of the plurality of management configurations are separately indicated for the two or more IMRs.

3. The method of claim 1, wherein at least one of the plurality of management configurations is separately indicated for the two or more IMRs and at least another one of the plurality of management configurations is jointly indicated for the two or more IMRs.

4. The method of claim 1, wherein the plurality of management configurations includes a CSI reporting mode, a channel quality indication (CQI) table, an energy per resource element (EPRE) ratio, and a reporting restriction parameter.

5. The method of claim 4, wherein the EPRE ratio is a ratio of physical downlink shared channel (PDSCH) EPRE to channel state information reference signal (CSI-RS) EPRE.

6. The method of claim 4, wherein the reporting restriction parameter is one or both of a parameter that restricts a set of vectors or ranks that are reportable by the UE and a codebookSubsetRestriction parameter.

7. The method of claim 1, wherein the two or more IMRs are each associated with one or more subframe sets associated with the CSI process.

8. The method of claim 1, wherein the plurality of management configurations are associated with a downlink transmission mode configured for the UE.

9. The method of claim 1, further comprising:

receiving an indication that one of the two or more IMRs is a reference IMR.

10. The method of claim 1, wherein the UE is configured to use one or both of evolved interference management for traffic adaptation (eIMTA) and network assisted interference cancellation and suppression (NAICS) operations.

11. An apparatus for wireless communication, comprising:

a processor;

memory in electronic communication with the processor; and

instructions stored in the memory, the instructions being executable by the processor to;

receive at a user equipment (UE) information associated with a channel state information (CSI) process, the information comprising an allocation of two or more interference measurement resources (IMRs) for the CSI process and a plurality of management configurations for use of the two or more IMRs, wherein at least one of the plurality of management configurations is separately indicated for the two or more IMRs; and

use the two or more IMRs in accordance with the plurality of management configurations to perform one or both of channel measurement and CSI reporting.

12. The apparatus of claim 11, wherein the plurality of management configurations is separately indicated for the two or more IMRs.

13. The apparatus of claim 11, wherein at least one of the plurality of management configurations is separately indicated for the two or more IMRs and at least another one of the plurality of management configurations is jointly indicated for the two or more IMRs.

14. The apparatus of claim 11, wherein the plurality of management configurations includes a CSI reporting mode, a channel quality indication (CQI) table, an energy per resource element (EPRE) ratio, and a reporting restriction parameter.

15. The apparatus of claim 11, wherein the two or more IMRs are each associated with one or more subframe sets associated with the CSI process.

16. The apparatus of claim 11, wherein the plurality of management configurations are associated with a downlink transmission mode configured for the UE.

17. The apparatus of claim 11, wherein the instructions are executable by the processor to:

receive an indication that one of the two or more IMRs is a reference IMR.

18. The apparatus of claim 11, wherein the UE is configured to use one or both of evolved interference management for traffic adaptation (eIMTA) and network assisted interference cancellation and suppression (NAICS) operations.

19. A non-transitory computer-readable medium storing instructions executable by a processor to:

receive at a user equipment (UE) information associated with a channel state information (CSI) process, the information comprising an allocation of two or more interference measurement resources (IMRs) for the CSI process and a plurality of management configurations for use of the two or more IMRs, wherein at least one of the plurality of management configurations is separately indicated for the two or more IMRs; and

use the two or more IMRs in accordance with the plurality of management configurations to perform one or both of channel measurement and CSI reporting.

20. The non-transitory computer-readable medium of claim 19, wherein the plurality of management configurations is separately indicated for the two or more IMRs.

21. The non-transitory computer-readable medium of claim 19, wherein at least one of the plurality of management configurations is separately indicated for the two or more IMRs and at least another one of the plurality of management configurations is jointly indicated for the two or more IMRs.

22. The non-transitory computer-readable medium of claim 19, wherein the plurality of management configurations includes a CSI reporting mode, a channel quality indication (CQI) table, an energy per resource element (EPRE) ratio, and a reporting restriction parameter.

23. The non-transitory computer-readable medium of claim 19, wherein the two or more IMRs are each associated with one or more subframe sets associated with the CSI process.

24. The non-transitory computer-readable medium of claim 19, wherein the plurality of management configurations are associated with a downlink transmission mode configured for the UE.

25. The non-transitory computer-readable medium of claim 19, wherein the instructions are executable by the processor to:

receive an indication that one of the two or more IMRs is a reference IMR.

26. A method for wireless communication, comprising:

transmitting information associated with a channel state information (CSI) process, the information comprising an allocation of two or more interference measurement resources (IMRs) for the CSI process and a plurality of management configurations for use of the two or more IMRs, wherein at least one of the plurality of management configurations is separately indicated for the two or more IMRs; and

receiving at least one CSI report based on at least one of the two or more IMRs.

27. The method of claim 26, wherein the plurality of management configurations is separately indicated for the two or more IMRs.

28. The method of claim 26, wherein at least one of the plurality of management configurations is separately indicated for the two or more IMRs and at least one of the plurality of management configurations is jointly indicated for the two or more IMRs.

29. The method of claim 26, wherein the plurality of management configurations includes a CSI reporting mode, a channel quality indication (CQI) table, an energy per resource element (EPRE) ratio, and a reporting restriction parameter.

30. The method of claim 26, further comprising:

transmitting an indication that one of the two or more IMRs is a reference IMR.