IP Library › Granted Patent US 12,402,117

Granted Patent B2

US 12,402,117 · App. 18/408,501 · Granted Aug 26, 2025

Channel state information reporting for multi-transmission-reception-point operation

Inventors: Haitong Sun (Cupertino, CA); Dawei Zhang (Saratoga, CA); Wei Zeng (Saratoga, CA); Yushu Zhang (Beijing, CN); Hong He (San Jose, CA); Chunxuan Ye (San Diego, CA); Huaning Niu (San Jose, CA); Oghenekome Oteri (San Diego, CA)

Assignee: Apple Inc.

H04W72/1263 H04B17/336 H04L5/0051 H04W72/54

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Quick Facts

Patent No.: US 12,402,117
App. No.: 18/408,501
Granted: Aug 26, 2025
Kind: B2

External Links

USPTO Patent Center↗ Full Patent PDF↗

Abstract

This disclosure relates to techniques for performing channel state information reporting for multi-transmission-reception-point operation in a wireless communication system. Channel state information configuration information may be provided to a wireless device. The channel state information configuration information may indicate channel measurement resources associated with each of multiple transmission reception points. The wireless device may perform channel state information reporting based on the channel state information configuration information.

Claims (73)

1. A method, comprising:

receiving channel state information (CSI) configuration information,

wherein the CSI configuration information indicates at least a first set of CSI reference signal (RS) resources associated with a first transmission reception point (TRP) for channel measurement and a second set of CSI-RS resources associated with a second TRP for channel measurement,

wherein the CSI configuration information indicates pairs of CSI-RS resources for channel measurement, wherein each pair of CSI-RS resources includes a CSI-RS resource associated with the first TRP and a CSI-RS resource associated with the second TRP;

performing CSI reporting based at least in part on the CSI configuration information; and

determining that a number of CSI-interference measurement (CSI-IM) resources equal to a larger of a number of CSI-RS resources in the first set of CSI-RS resources or a number of CSI-RS resources in the second set of CSI-RS resources are mapped to CSI-RS resources in the first set of CSI-RS resources and the second set of CSI-RS resources; and

performing single TRP interference measurement for the CSI reporting using the CSI-IM resources mapped to the CSI-RS resources associated with a corresponding TRP.

2. The method of claim 1 , wherein the method further comprises:

performing interference measurement for the CSI reporting using a single CSI-IM resource, wherein the single CSI-IM resource is quasi-co-located (QCL) with a corresponding CSI-RS resource used for channel measurement.

3. The method of claim 1 , wherein the method further comprises:

performing single TRP interference measurement for the CSI reporting using CSI-IM resources one-to-one mapped to CSI-RS resources.

4. The method of claim 1 , wherein the method further comprises:

performing multi-TRP interference measurement for the CSI reporting using a pair of CSI-IM resources associated with a corresponding pair of CSI-RS resources indicated in the CSI configuration information.

5. The method of claim 1 , wherein the method further comprises:

determining that a number of CSI-IM resources equal to the number of CSI-RS resources in the first set of CSI-RS resources plus the number of CSI-RS resources in the second set of CSI-RS resources plus a number of pairs of CSI-RS resources indicated in the CSI configuration information are mapped to the CSI-RS resources in the first set of CSI-RS resources, the second set of CSI-RS resources, and the pairs of CSI-RS resources indicated in the CSI configuration information; and

performing single TRP interference measurement for the CSI reporting using CSI-IM resources one-to-one mapped to CSI-RS resources.

6. The method of claim 1 , wherein the method further comprises:

performing multi-TRP interference measurement for the CSI reporting using a CSI-IM resource associated with a corresponding pair of CSI-RS resources indicated in the CSI configuration information.

7. The method of claim 1 , wherein the method further comprises:

determining that a number of CSI-IM resources equal to thea larger of the number of CSI-RS resources in the first set of CSI-RS resources or the number of CSI-RS resources in the second set of CSI-RS resources are mapped to the CSI-RS resources in the first set of CSI-RS resources and the second set of CSI-RS resources; and

performing multi-TRP interference measurement for the CSI reporting using a CSI-IM resource associated with a CSI-RS resource in the larger of the first set of CSI-RS resources or the second set of CSI-RS resources for each pair of CSI-RS resources indicated in the CSI configuration information.

8. A processor configured to:

receive channel state information (CSI) configuration information,

perform CSI reporting based at least in part on the CSI configuration information; and

determine that a number of CSI-interference measurement (CSI-IM) resources equal to a larger of a number of CSI-RS resources in the first set of CSI-RS resources or a number of CSI-RS resources in the second set of CSI-RS resources are mapped to CSI-RS resources in the first set of CSI-RS resources and the second set of CSI-RS resources; and

perform single TRP interference measurement for the CSI reporting using the CSI-IM resources mapped to the CSI-RS resources associated with a corresponding TRP.

9. The processor of claim 8 , wherein the processor is further configured to:

perform interference measurement for the CSI reporting using a single CSI-IM resource, wherein the CSI-IM resource is quasi-co-located (QCL) with a corresponding CSI-RS resource used for channel measurement.

10. The processor of claim 8 , wherein the processor is further configured to:

perform single TRP interference measurement for the CSI reporting using CSI-IM resources one-to-one mapped to CSI-RS resources.

11. The processor of claim 8 , wherein the processor is further configured to:

determine that a number of CSI-IM) resources equal to the number of CSI-RS resources in the first set of CSI-RS resources plus the number of CSI-RS resources in the second set of CSI-RS resources are mapped to the CSI-RS resources in the first set of CSI-RS resources and the second set of CSI-RS resources; and

perform multi-TRP interference measurement for the CSI reporting using a pair of CSI-IM resources associated with a corresponding pair of CSI-RS resources indicated in the CSI configuration information.

12. The processor of claim 8 , wherein the processor is further configured to:

determine that a number of CSI-IM resources equal to the number of CSI-RS resources in the first set of CSI-RS resources plus the number of CSI-RS resources in the second set of CSI-RS resources plus a number of pairs of CSI-RS resources indicated in the CSI configuration information are mapped to the CSI-RS resources in the first set of CSI-RS resources, the second set of CSI-RS resources, and the pairs of CSI-RS resources indicated in the CSI configuration information; and

perform single TRP interference measurement for the CSI reporting using CSI-IM resources one-to-one mapped to CSI-RS resources.

13. The processor of claim 8 , wherein the processor is further configured to:

perform multi-TRP interference measurement for the CSI reporting using a CSI-IM resource associated with a corresponding pair of CSI-RS resources indicated in the CSI configuration information.

14. The processor of claim 8 , wherein the processor is further configured to:

determine that a number of CSI-IM resources equal to a larger of the number of CSI-RS resources in the first set of CSI-RS resources or the number of CSI-RS resources in the second set of CSI-RS resources are mapped to the CSI-RS resources in the first set of CSI-RS resources and the second set of CSI-RS resources; and

perform multi-TRP interference measurement for the CSI reporting using a CSI-IM resource associated with a CSI-RS resource in the larger of the first set of CSI-RS resources or the second set of CSI-RS resources for each pair of CSI-RS resources indicated in the CSI configuration information.

15. The processor of claim 8 , wherein the processor is a baseband processor.

16. An apparatus, comprising:

at least one processor configured to cause a wireless device to:

receive channel state information (CSI) configuration information,

perform CSI reporting based at least in part on the CSI configuration information; and

perform single TRP interference measurement for the CSI reporting using the CSI-IM resources mapped to the CSI-RS resources associated with a corresponding TRP.

17. The apparatus of claim 16 , wherein the at least one processor is further configured to cause the wireless device to:

18. The apparatus of claim 16 , wherein the at least one processor is further configured to cause the wireless device to:

perform single TRP interference measurement for the CSI reporting using CSI-IM resources one-to-one mapped to CSI-RS resources.

19. The apparatus of claim 16 , further comprising:

a radio operably coupled to the at least one processor.

20. The apparatus of claim 16 ,

21. The apparatus of claim 16 ,

perform single TRP interference measurement for the CSI reporting using CSI-IM resources one-to-one mapped to CSI-RS resources.

22. The apparatus of claim 16 ,

perform multi-TRP interference measurement for the CSI reporting using a CSI-IM resource associated with a corresponding pair of CSI-RS resources indicated in the CSI configuration information.

Continuity (2)

Division 17437760

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