Granted Patent B2

US 12,206,609 · App. 17/476,230 · Granted Jan 21, 2025

Inventors: Hua Wang (Basking Ridge, NJ); Sony Akkarakaran (Poway, CA); Tao Luo (San Diego, CA); Junyi Li (Fairless Hills, PA)

Assignee: QUALCOMM Incorporated

H04L5/0048H04B7/0626H04W24/10H04W76/14

Abstract

Claims (123)

1. A first wireless communication device configured for wireless communication, comprising:

one or more processors; and

one or more memories coupled to the one or more processors, wherein the one or more processors are configured to cause the first wireless communication device to:

transmit a sidelink reference signal to a second wireless communication device;

receive a sidelink channel state information report from the second wireless communication device in response to the sidelink reference signal, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

transmit a sidelink phase-tracking reference signal (PT-RS) configuration to the second wireless communication device, wherein the sidelink PT-RS configuration is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

2. The first wireless communication device of claim 1 , wherein the sidelink channel state information report comprises at least a rank indicator (RI) and the PMI, wherein the one or more processors are further configured to:

select the number of PT-RS ports based on at least the RI and the PMI.

3. The first wireless communication device of claim 2 , wherein the sidelink PT-RS configuration further comprises a port association indicating a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports, wherein the one or more processors are further configured to:

determine the port association based on the number of PT-RS ports.

4. The first wireless communication device of claim 1 , wherein the one or more processors are further configured to:

receive sidelink PT-RS configuration information from a radio access network (RAN) entity in wireless communication with the first wireless communication device.

5. The first wireless communication device of claim 4 , wherein the sidelink PT-RS configuration information comprises the sidelink PT-RS configuration, wherein the sidelink PT-RS configuration comprises at least the number of PT-RS ports and a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports.

6. The first wireless communication device of claim 4 , wherein the sidelink channel state information report comprises at least a rank indicator (RI) and the PMI, the sidelink PT-RS configuration information comprising at least one of the RI and the PMI, wherein the one or more processors are further configured to:

select the number of PT-RS ports based on at least the RI and the PMI; and

determine a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports based on the number of PT-RS ports.

7. The first wireless communication device of claim 4 , wherein the one or more processors are further configured to:

receive the sidelink PT-RS configuration information within a radio resource control (RRC) message or downlink control information, wherein the RRC message comprises a sidelink identifier to identify a sidelink between the first wireless communication device and the second wireless communication device or a device identifier to identify the second wireless communication device.

8. The first wireless communication device of claim 4 , wherein the one or more processors are further configured to:

transmit the sidelink channel state information report received from the second wireless communication device to the RAN entity.

9. The first wireless communication device of claim 1 , wherein the one or more processors are further configured to:

transmit the sidelink PT-RS configuration to the second wireless communication device within second stage sidelink control information (SCI) in a data region of a slot.

10. The first wireless communication device of claim 9 , wherein the sidelink PT-RS configuration comprises PT-RS port information, wherein the PT-RS port information includes the number of PT-RS ports and PT-RS resource element information.

11. The first wireless communication device of claim 1 , wherein the one or more processors are further configured to:

transmit a sidelink PT-RS to the second wireless communication device based on the sidelink PT-RS configuration.

12. The first wireless communication device of claim 1 , wherein the one or more processors are further configured to:

transmit a plurality of sidelink CSI-RSs, each associated with a different one of a plurality of sidelink CSI-RS resources.

13. A radio access network (RAN) entity configured for wireless communication, comprising:

one or more processors; and

one or more memories coupled to the one or more processors, wherein the one or more processors are configured to cause the RAN entity to:

receive a sidelink channel state information report, wherein the sidelink channel state information report is associated with a sidelink between a first wireless communication device and a second wireless communication device, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

transmit sidelink phase-tracking reference signal (PT-RS) configuration information to the first wireless communication device, wherein the sidelink PT-RS configuration information indicates a sidelink PT-RS configuration for the first wireless communication device, wherein the sidelink PT-RS configuration is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

14. The RAN entity of claim 13 , wherein the sidelink PT-RS configuration information comprises the sidelink PT-RS configuration, wherein the one or more processors are further configured to:

select the number of PT-RS ports based on the sidelink channel state information report.

15. The RAN entity of claim 14 , wherein the sidelink channel state information report comprises at least a rank indicator (RI) and the PMI, wherein the one or more processors are further configured to:

select the number of PT-RS ports based on at least the RI and the PMI.

16. The RAN entity of claim 14 , wherein the sidelink PT-RS configuration further comprises a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports, wherein the one or more processors are further configured to:

determine the port association based on the number of PT-RS ports.

17. The RAN entity of claim 13 , wherein the one or more processors are further configured to:

receive the sidelink channel state information report from the first wireless communication device within a medium access control-control element (MAC-CE) or uplink control information.

18. The RAN entity of claim 13 , wherein the one or more processors are further configured to:

receive the sidelink channel state information report from the second wireless communication device within a medium access control-control element (MAC-CE) or uplink control information.

19. The RAN entity of claim 13 , wherein the sidelink channel state information report comprises at least a rank indicator (RI) and the PMI, and wherein the sidelink PT-RS configuration information comprises at least one of the RI or the PMI.

20. The RAN entity of claim 13 , wherein the one or more processors are further configured to:

transmit the sidelink PT-RS configuration information within a radio resource control (RRC) message or downlink control information, wherein the RRC message comprises a sidelink indicator to identify the sidelink between the first wireless communication device and the second wireless communication device or a device identifier to identify the second wireless communication device.

21. A second wireless communication device configured for wireless communication, comprising:

one or more processors; and

one or more memories coupled to the one or more processors, wherein the one or more processors are configured to cause the second wireless communication device to:

receive a sidelink reference signal from a first wireless communication device;

transmit a sidelink channel state information report to the first wireless communication device generated based on the sidelink reference signal, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

receive a sidelink phase-tracking reference signal (PT-RS) configuration from the first wireless communication device, wherein the sidelink PT-RS configuration is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

22. The second wireless communication device of claim 21 , wherein the sidelink PT-RS configuration comprises a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports.

23. The second wireless communication device of claim 21 , wherein the sidelink channel state information report comprises at least a rank indicator (RI) and the PMI.

24. The second wireless communication device of claim 21 , wherein the one or more processors are further configured to:

transmit the sidelink channel state information report to a radio access network (RAN) entity in wireless communication with the first wireless communication device and the second wireless communication device.

25. The second wireless communication device of claim 21 , wherein the one or more processors are further configured to:

receive the sidelink PT-RS configuration from the first wireless communication device within second stage sidelink control information (SCI) in a data region of a slot.

26. The second wireless communication device of claim 25 , wherein the sidelink PT-RS configuration comprises PT-RS port information, wherein the PT-RS port information includes the number of PT-RS ports and PT-RS resource element information.

27. The second wireless communication device of claim 21 , wherein the one or more processors are further configured to:

receive a sidelink PT-RS from the first wireless communication device based on the sidelink PT-RS configuration.

28. The second wireless communication device of claim 21 , wherein the one or more processors are further configured to:

receive a plurality of sidelink CSI-RSs, each associated with a different one of a plurality of sidelink CSI-RS resources.

29. A method of sidelink wireless communication at a first wireless communication device, the method comprising:

transmitting a sidelink reference signal to a second wireless communication device;

receiving a sidelink channel state information report from the second wireless communication device in response to the sidelink reference signal, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

transmitting a sidelink phase-tracking reference signal (PT-RS) configuration to the second wireless communication device, wherein the sidelink PT-RS configuration is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

30. The method of claim 29 , wherein the sidelink PT-RS configuration further comprises a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports, and further comprising:

determining the port association based on the number of PT-RS ports.

31. The method of claim 29 , further comprising:

receiving sidelink PT-RS configuration information from a radio access network (RAN) entity in wireless communication with the first wireless communication device.

32. The method of claim 31 , wherein the sidelink PT-RS configuration information comprises the sidelink PT-RS configuration, wherein the sidelink PT-RS configuration comprises at least the number of PT-RS ports and a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports.

33. A method of wireless communication at a radio access network (RAN) entity, the method comprising:

receiving a sidelink channel state information report, wherein the sidelink channel state information report is associated with a sidelink between a first wireless communication device and a second wireless communication device, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

transmitting sidelink phase-tracking reference signal (PT-RS) configuration information to the first wireless communication device, wherein the sidelink PT-RS configuration information indicates a sidelink PT-RS configuration for the first wireless communication device, wherein the sidelink PT-RS configuration information is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

34. The method of claim 33 , wherein the sidelink PT-RS configuration information comprises the sidelink PT-RS configuration, and further comprising:

selecting the number of PT-RS ports based on the sidelink channel state information report.

35. The method of claim 33 , wherein the sidelink PT-RS configuration further comprises a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports, and further comprising:

determining the port association based on the number of PT-RS ports.

36. The method of claim 33 , wherein the sidelink channel state information report comprises at least a rank indicator (RI) and the PMI, and wherein the sidelink PT-RS configuration information comprises at least one of the RI or the PMI.

37. An apparatus for wireless communication at a first wireless communication device, the apparatus comprising:

means for transmitting a sidelink reference signal to a second wireless communication device;

means for receiving a sidelink channel state information report from the second wireless communication device in response to the sidelink reference signal, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

means for transmitting a sidelink phase-tracking reference signal (PT-RS) configuration to the second wireless communication device, wherein the sidelink PT-RS configuration is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

38. The apparatus of claim 37 , wherein the sidelink PT-RS configuration further comprises a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports, and further comprising:

means for determining the port association based on the number of PT-RS ports.

39. The apparatus of claim 37 , further comprising:

means for receiving sidelink PT-RS configuration information from a radio access network (RAN) entity in wireless communication with the first wireless communication device.

40. The apparatus of claim 39 , wherein the sidelink PT-RS configuration information comprises the sidelink PT-RS configuration, wherein the sidelink PT-RS configuration comprises at least the number of PT-RS ports and a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports.

41. An apparatus for wireless communication at a radio access network (RAN) entity, the apparatus comprising:

means for receiving a sidelink channel state information report, wherein the sidelink channel state information report is associated with a sidelink between a first wireless communication device and a second wireless communication device, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

means for transmitting sidelink phase-tracking reference signal (PT-RS) configuration information to the first wireless communication device, wherein the sidelink PT-RS configuration information indicates a sidelink PT-RS configuration for the first wireless communication device, wherein the sidelink PT-RS configuration information is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

42. The apparatus of claim 41 , wherein the sidelink PT-RS configuration information comprises the sidelink PT-RS configuration, and further comprising:

means for selecting the number of PT-RS ports based on the sidelink channel state information report.

43. The apparatus of claim 41 , wherein the sidelink PT-RS configuration further comprises a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports, and further comprising:

means for determining the port association based on the number of PT-RS ports.

44. The apparatus of claim 41 , wherein the sidelink channel state information report comprises at least a rank indicator (RI) and the PMI, and wherein the sidelink PT-RS configuration information comprises at least one of the RI or the PMI.

45. A non-transitory computer-readable medium having stored therein instructions executable by one or more processors of a first wireless communication device to:

transmit a sidelink reference signal to a second wireless communication device;

receive a sidelink channel state information report from the second wireless communication device in response to the sidelink reference signal, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

transmit a sidelink phase-tracking reference signal (PT-RS) configuration to the second wireless communication device, wherein the sidelink PT-RS configuration is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

46. The non-transitory computer-readable medium of claim 45 , wherein the sidelink PT-RS configuration further comprises a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports, and wherein the non-transitory computer-readable medium further comprises instructions executable by the one or more processors of the first wireless communication device to:

determine the port association based on the number of PT-RS ports.

47. The non-transitory computer-readable medium of claim 45 , wherein the non-transitory computer-readable medium further comprises instructions executable by the one or more processors of the first wireless communication device to:

receive sidelink PT-RS configuration information from a radio access network (RAN) entity in wireless communication with the first wireless communication device.

48. The non-transitory computer-readable medium of claim 47 , wherein the sidelink PT-RS configuration information comprises the sidelink PT-RS configuration, wherein the sidelink PT-RS configuration comprises at least the number of PT-RS ports and a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports.

49. A non-transitory computer-readable medium having stored therein instructions executable by one or more processors of a radio access network (RAN) entity to:

receive a sidelink channel state information report, wherein the sidelink channel state information report is associated with a sidelink between a first wireless communication device and a second wireless communication device, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

transmit sidelink phase-tracking reference signal (PT-RS) configuration information to the first wireless communication device, wherein the sidelink PT-RS configuration information indicates a sidelink PT-RS configuration for the first wireless communication device, wherein the sidelink PT-RS configuration information is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

50. The non-transitory computer-readable medium of claim 49 , wherein the sidelink PT-RS configuration information comprises the sidelink PT-RS configuration, and wherein the non-transitory computer-readable medium further comprises instructions executable by the one or more processors of the RAN entity to:

select the number of PT-RS ports based on the sidelink channel state information report.

51. The non-transitory computer-readable medium of claim 49 , wherein the sidelink PT-RS configuration further comprises a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports, and wherein the non-transitory computer-readable medium further comprises instructions executable by the one or more processors of the RAN entity to:

determine the port association based on the number of PT-RS ports.

52. The non-transitory computer-readable medium of claim 51 , wherein the sidelink channel state information report comprises at least a rank indicator (RI) and the PMI, and wherein the sidelink PT-RS configuration information comprises at least one of the RI or the PMI.

53. A method of wireless communication at a second wireless communication device, the method comprising:

receiving a sidelink reference signal from a first wireless communication device;

transmitting a sidelink channel state information report to the first wireless communication device generated based on the sidelink reference signal, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

receiving a sidelink phase-tracking reference signal (PT-RS) configuration from the first wireless communication device, wherein the sidelink PT-RS configuration is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

54. The method of claim 53 , wherein the sidelink PT-RS configuration comprises a port association, wherein the port association indicates a respective association between each PT-RS port and a corresponding one of a plurality of demodulation reference signal ports.

55. The method of claim 53 , wherein the sidelink channel state information report comprises at least a rank indicator (RI) and the PMI.

56. A non-transitory computer-readable medium having stored therein instructions executable by one or more processors of a second wireless communication device to:

receive a sidelink reference signal from a first wireless communication device;

transmit a sidelink channel state information report to the first wireless communication device generated based on the sidelink reference signal, wherein the sidelink channel state information report comprises at least a precoding matrix indicator (PMI); and

receive a sidelink phase-tracking reference signal (PT-RS) configuration from the first wireless communication device, wherein the sidelink PT-RS configuration is based on the sidelink channel state information report, wherein the sidelink PT-RS configuration comprises an indication of a number of PT-RS ports selected based on at least the PMI.

Assignments (1)

Continuity (2)

References Cited (19)