Channel compression matrix parameters

Patent metadata

Field	Value
Publication number	US-12074674-B2
Application number	US-202218079475-A
Country	US
Kind code	B2
Filing date	Dec 12, 2022
Priority date	Jan 19, 2018
Publication date	Aug 27, 2024
Grant date	Aug 27, 2024

Abstract

One apparatus for providing high-resolution CSI feedback includes a processor and a radio transceiver. The processor computes sets of amplitude and phase parameters for one or more matrices corresponding to a CSI codebook. Here, each matrix corresponds to one transmission layer of a multiple-layer transmission, where each matrix is comprised of one or more column vectors. The radio transceiver sends indications of the sets of amplitude and phase parameters to one or more network entities is a mobile communication network.

First claim

What is claimed is:

1. A user equipment (“UE”) for wireless communication, comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
compute sets of amplitude and phase parameters for one or more matrices corresponding to a channel state information (“CSI”) codebook,
wherein each matrix corresponds to one transmission layer of a multiple-layer transmission,
wherein each matrix is comprised of one or more column vectors; and

transmit one or more indications of the sets of amplitude and phase parameters to one or more network entities in a mobile communication network.

2. The UE of claim 1 , wherein each set of amplitude and phase parameters parameterizes one column of a matrix corresponding to the CSI codebook.

3. The UE of claim 1 , wherein the sets of amplitude and phase parameters comprise:
polarization-specific amplitude coefficient parameters,
polarization-specific phase coefficient parameters, and
polarization amplitude offset coefficient parameters.

4. The UE of claim 3 ,
wherein the polarization-specific amplitude coefficient parameters form a polarization-specific amplitude vector,
wherein the polarization-specific phase coefficient parameters form a polarization-specific phase vector, and
wherein the polarization amplitude offset coefficient parameters form a polarization amplitude offset vector.

5. The UE of claim 3 , wherein the at least one processor is configured to cause the UE to:
identify a largest polarization-specific amplitude coefficient parameter of the polarization-specific amplitude coefficient parameters for each polarization, wherein the largest polarization-specific amplitude coefficient parameter becomes a reference entry for that polarization; and
quantize, for each polarization, all other polarization-specific amplitude coefficient parameters for that polarization relative to the reference entry for that polarization.

6. The UE of claim 3 , wherein the at least one processor is configured to cause the UE to:
identify a largest polarization amplitude offset coefficient parameter of the polarization amplitude offset coefficient parameters for each polarization, wherein the largest polarization amplitude offset coefficient parameter becomes a reference entry for that polarization; and
quantize, for each polarization, all other polarization amplitude offset coefficient parameters for that polarization relative to the reference entry for that polarization.

7. The UE of claim 1 , wherein the sets of amplitude and phase parameters comprise:
polarization-common amplitude coefficient parameters,
polarization-specific phase coefficient parameters, and
polarization amplitude offset coefficient parameters.

8. The UE of claim 7 ,
wherein the polarization-common amplitude coefficient parameters form a polarization-common amplitude vector,
wherein the polarization-specific phase coefficient parameters form a polarization-specific phase vector, and
wherein the polarization amplitude offset coefficient parameters form a polarization amplitude offset vector.

9. The UE of claim 7 , wherein the at least one processor is configured to cause the UE to:
identify a largest polarization-common amplitude coefficient parameter of the polarization-common amplitude coefficient parameters for each polarization, wherein the largest polarization-common amplitude coefficient parameter becomes a reference entry for that polarization; and
quantize, for each polarization, all other polarization-common amplitude coefficient parameters for that polarization relative to the reference entry for that polarization.

10. The UE of claim 7 , wherein the at least one processor is configured to cause the UE to:
identify a largest polarization amplitude offset coefficient parameter of the polarization amplitude offset coefficient parameters for each polarization, wherein the largest polarization amplitude offset coefficient parameter becomes a reference entry for that polarization; and
quantize, for each polarization, all other polarization amplitude offset coefficient parameters for that polarization relative to the reference entry for that polarization.

11. The UE of claim 1 , wherein the sets of amplitude and phase parameters comprise:
polarization-common amplitude coefficient parameters,
polarization-common phase coefficient parameters,
polarization amplitude offset coefficient parameters, and
polarization phase offset coefficient parameters.

12. The UE of claim 11 , wherein the polarization-common amplitude coefficient parameters form a polarization-common amplitude vector,
wherein the polarization-common phase coefficient parameters form a polarization-common phase vector,
wherein the polarization amplitude offset coefficient parameters form a polarization amplitude offset vector, and
wherein the polarization phase offset coefficient parameters form a polarization phase vector.

13. The UE of claim 11 , wherein the at least one processor is configured to cause the UE to:
identify a largest polarization-common amplitude coefficient parameter of the polarization-common amplitude coefficient parameters for each polarization, wherein the largest polarization-common amplitude coefficient parameter becomes a reference entry for that polarization; and
quantize, for each polarization, all other polarization-common amplitude coefficient parameters for that polarization relative to the reference entry for that polarization.

14. The UE of claim 11 , wherein the at least one processor is configured to cause the UE to:
identify a largest polarization amplitude offset coefficient parameter of the polarization amplitude offset coefficient parameters for each polarization, wherein the largest polarization amplitude offset coefficient parameter becomes a reference entry for that polarization; and
quantize, for each polarization, all other polarization amplitude offset coefficient parameters for that polarization relative to the reference entry for that polarization.

15. A processor for wireless communication, comprising:
at least one controller coupled with at least one memory and configured to cause the processor to:
compute sets of amplitude and phase parameters for one or more matrices corresponding to a channel state information (“CSI”) codebook,
wherein each matrix corresponds to one transmission layer of a multiple-layer transmission,
wherein each matrix is composed of one or more column vectors; and

transmit one or more indications of the sets of amplitude and phase parameters to one or more network entities in a wireless communication system.

16. The processor of claim 15 , wherein a number of column vectors which compose each matrix corresponding to the CSI codebook is less than a number of beams based on a received set of reference signals from a network entity in the wireless communication system.

17. The processor of claim 15 , wherein each set of amplitude and phase parameters parameterizes one column of the matrix corresponding to the CSI codebook.

18. The processor of claim 15 , wherein the sets of amplitude and phase parameters comprise:
polarization-specific amplitude coefficient parameters,
polarization-specific phase coefficient parameters, and
polarization amplitude offset coefficient parameters.

19. The processor of claim 15 , wherein the sets of amplitude and phase parameters comprise:
polarization-common amplitude coefficient parameters,
polarization-specific phase coefficient parameters, an

Assignees

• Lenovo Singapore Pte Ltd

Inventors

• Song Jiho
• Brown Tyler

Classifications

• H04B7/06952

  Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping · CPC title

• H04B7/0617

  for beam forming · CPC title

• H04B7/0626 Primary

  Channel coefficients, e.g. channel state information [CSI] · CPC title

• H04B7/0619 Primary

  using feedback from receiving side (feedback signaling for adaptive modulation/coding H04L1/0001) · CPC title

• H04B7/10

  Polarisation diversity; Directional diversity · CPC title