Systems and methods for codeword reporting by wireless communication device for uplink transmissions

Patent metadata

Field	Value
Publication number	US-12348294-B2
Application number	US-202217851075-A
Country	US
Kind code	B2
Filing date	Jun 28, 2022
Priority date	Jul 8, 2020
Publication date	Jul 1, 2025
Grant date	Jul 1, 2025

Abstract

Systems and methods for wireless communications are disclosed herein. A first communication node reports at least one codeword, a number of antenna ports, a coherence capability of the antenna ports, or a full power transmission mode for the at least one uplink transmission to a second communication node. The at least one codeword is determined based on the number of antenna ports, the coherence capability, and the full power transmission mode. The at least one codeword includes at least one precoding matrix group or at least one Transmission Precoding Matrix Index (TPMI) group corresponding to the at least one precoding matrix group.

First claim

The invention claimed is:

1. A method, comprising:
reporting, by a first communication node to a second communication node, at least one codeword, a number of antenna ports, a coherence capability of the antenna ports, and a full power transmission mode for the at least one uplink transmission, wherein
the at least one codeword is determined based on the number of antenna ports, the coherence capability, and the full power transmission mode; and
the at least one codeword comprises at least one precoding matrix group or at least one Transmission Precoding Matrix Index (TPMI) group corresponding to the at least one precoding matrix group.

2. The method of claim 1 , wherein
the number of the antenna ports is 4;
the coherence capability is non-coherent;
the full power transmission mode comprises mode 2; and
the at least one TPMI group is a TPMI group corresponding to one of index G0, G1, G2, G3, G4, G5, G6, G7, G8, G9, G10, or G11:

Index
TPMI(s)

G0
1 layer: TPMI = 0

G1
1 layer: TPMI = 0, TPMI = 2

2 layers: TPMI = 1

G2
1 layer: TPMI = 0, TPMI = 1, TPMI = 2

2 layers: TPMI = 1, TPMI = 0, TPMI = 3

3 layers: TPMI = 0

G3
2 layers: TPMI = 1

G4
2 layers: TPMI = 1, TPMI = 0, TPMI = 3

3 layers: TPMI = 0

G5
2 layers: TPMI = 1, TPMI = 4, TPMI = 0, TPMI = 2, TPMI = 3,

TPMI = 5

3 layers: TPMI = 0

G6
1 layer: TPMI = 0

2 layers: TPMI = 1

G7
1 layer: TPMI = 0

2 layers: TPMI = 1, TPMI = 0, TPMI = 3

3 layers: TPMI = 0

G8
1 layer: TPMI = 0, TPMI = 2

2 layers: TPMI = 1, TPMI = 0, TPMI = 3

3 layers: TPMI = 0

G9
1 layer: TPMI = 0

2 layers: TPMI = 1, TPMI = 4, TPMI = 0, TPMI = 2, TPMI = 3,

TPMI = 5

3 layers: TPMI = 0

G10
1 layer: TPMI = 0, TPMI = 2

2 layers: TPMI = 1, TPMI = 4, TPMI = 0, TPMI = 2, TPMI = 3,

TPMI = 5

3 layers: TPMI = 0

G11
1 layer: TPMI = 0, TPMI = 1, TPMI = 2

2 layers: TPMI = 1, TPMI = 4, TPMI = 0, TPMI = 2, TPMI = 3,

TPMI = 5

3 layers: TPMI = 0.

3. The method of claim 1 , wherein
the number of the antenna ports is 4;
the coherence capability is non-coherent;
the full power transmission mode comprises mode 2; and
the at least one precoding matrix group is a precoding matrix group corresponding to one of index G0, G1, G2, G3, G4, G5, G6, G7, G8, G9, G10, or G11:

Index
Precoding Matrices

G0

1
2

[

1

0

0

0

]

G1

{

1
2

[

1

0

0

0

]

,

Assignees

• Zte Corp

Inventors

• Zhang Yang
• Gao Bo
• Yao Ke
• Wu Hao
• Lu Zhaohua
• Li Yu Ngok
• Yan Wenjun

Classifications

• H04B7/0478

  Special codebook structures directed to feedback optimisation · CPC title

• H04B7/0456 Primary

  Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting · CPC title

• H04B7/0426

  Power distribution · CPC title

• H04B7/063

  Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection · CPC title

• H04B7/0639 Primary

  Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection · CPC title