# US 11,909,485 B2 · Channel measurement method and user equipment

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- Number: US 11,909,485 B2
- Document ID: US11909485B2
- Status: Granted
- Kind: B2
- Application number: 17/964,723
- Filed: 2022-10-12
- Published: 2023-03-09
- Granted: 2024-02-20
- Earliest claimed: 2017-12-09
- Assignees: Huawei Technologies Co., Ltd.
- Applicants: Huawei Technologies Co., Ltd.
- Inventors: Xianda Liu; Kunpeng Liu; Zukang Shen; Yan Cheng
- Web page: https://patentgrep.com/patent/US11909485B2

## CPC

- H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection}
- H04B 7/0481: {using subset selection of codebooks}
- H04B 7/063: {Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection}
- H04B 7/0658: {Feedback reduction}
- H04L 5/0023: {Time-frequency-space}
- H04L 5/0091: {Signalling for the administration of the divided path, e.g. signalling of configuration information}
- H04L 27/2607: {Cyclic extensions}
- H04L 5/0007: {the frequencies being orthogonal, e.g. OFDM(A) or DMT}
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)

## Abstract

The present disclosure describes methods, device, system that provide a codebook indication operation. In one example, a codebook indication method includes: receiving by a terminal device, a transmission parameter indication information indicating an index of one codebook subset configuration of three codebook subset configurations in the terminal device from a base station, wherein the three codebook subset configurations in the terminal device are related to fully coherent, partial coherent, and incoherent respectively, and the codebook subset configuration related to fully coherent includes M indexes, the codebook subset configuration related to partial coherent includes N indexes, and the codebook subset configuration related to incoherent includes K indexes, wherein M is an integer larger than N, and N is larger than K; and determining a transmission layer and precoding matrix associated with the index according to the transmission parameter indication information.

## Claims

### Claim 1

A method of wireless communications, comprising:
generating, by a network apparatus, transmission parameter indication information indicating an index in an index set of one codebook subset configuration of three codebook subset configurations, wherein the three codebook subset configurations are related to fully coherent, partial coherent, and incoherent respectively, wherein each index in the index set is associated with a quantity of transmission layer and a precoding matrix indicator, and a combination of the quantity of transmission layers and the precoding matrix indicator indicates a respective precoding matrix, and an index set of the codebook subset configuration related to fully coherent includes M first indexes, an index set of the codebook subset configuration related to partial coherent includes N second indexes, and an index set of the codebook subset configuration related to incoherent includes K third indexes, M is an integer larger than N, and N is an integer larger than K, wherein a third index and a second index with a same index value are associated with a same quantity of transport layers and a same precoding matrix indicator, and a second index and a first index with a same index value are associated with a same quantity of transport layers and a same precoding matrix indicator, and at least first 12 third indexes are the same as first 12 second indexes, and at least first 32 second indexes are the same as first 32 first indexes, wherein contents of the three codebook subset configurations are represented by the following table:
Field
fully coherent
Field
partial coherent
Field
Incoherent
index
transmission
index
transmission
index
transmission
0
One layer:
0
One layer:
0
One layer:
TPMI = 0
TPMI = 0
TPMI = 0
1
One layer:
1
One layer:
1
One layer:
TPMI = 1
TPMI = 1
TPMI = 1
2
One layer:
2
One layer:
2
One layer:
TPMI = 2
TPMI = 2
TPMI = 2
3
One layer:
3
One layer:
3
One layer:
TPMI = 3
TPMI = 3
TPMI = 3
4
Two layers:
4
Two layers:
4
Two layers:
TPMI = 0
TPMI = 0
TPMI = 0
5
Two layers:
5
Two layers:
5
Two layers:
TPMI = 1
TPMI = 1
TPMI = 1
6
Two layers:
6
Two layers:
6
Two layers:
TPMI = 2
TPMI = 2
TPMI = 2
7
Two layers:
7
Two layers:
7
Two layers:
TPMI = 3
TPMI = 3
TPMI = 3
8
Two layers:
8
Two layers:
8
Two layers:
TPMI = 4
TPMI = 4
TPMI = 4
9
Two layers:
9
Two layers:
9
Two layers:
TPMI = 5
TPMI = 5
TPMI = 5
10
Three layers:
10
Three layers:
10
Three layers:
TPMI = 0
TPMI = 0
TPMI = 0
11
Four layers:
11
Four layers:
11
Four layers:
TPMI = 0
TPMI = 0
TPMI = 0
12
One layer:
12
One layer:
TPMI = 4
TPMI = 4
13
One layer:
13
One layer:
TPMI = 5
TPMI = 5
14
One layer:
14
One layer:
TPMI = 6
TPMI = 6
15
One layer:
15
One layer:
TPMI = 7
TPMI = 7
16
One layer:
16
One layer:
TPMI = 8
TPMI = 8
17
One layer:
17
One layer:
TPMI = 9
TPMI = 9
18
One layer:
18
One layer:
TPMI = 10
TPMI = 10
19
One layer:
19
One layer:
TPMI = 11
TPMI = 11
20
Two layers:
20
Two layers:
TPMI = 6
TPMI = 6
21
Two layers:
21
Two layers:
TPMI = 7
TPMI = 7
22
Two layers:
22
Two layers:
TPMI = 8
TPMI = 8
23
Two layers:
23
Two layers:
TPMI = 9
TPMI = 9
24
Two layers:
24
Two layers:
TPMI = 10
TPMI = 10
25
Two layers:
25
Two layers:
TPMI = 11
TPMI = 11
26
Two layers:
26
Two layers:
TPMI = 12
TPMI = 12
27
Two layers:
27
Two layers:
TPMI = 13
TPMI = 13
28
Three layers:
28
Three layers:
TPMI = 1
TPMI = 1
29
Three layers:
29
Three layers:
TPMI = 2
TPMI = 2
30
Four layers:
30
Four layers:
TPMI = 1
TPMI = 1
31
Four layers:
31
Four layers:
TPMI = 2
TPMI = 2
32
One layer:
TPMI = 12
33
One layer:
TPMI = 13
34
One layer:
TPMI = 14
35
One layer:
TPMI = 15
36
One layer:
TPMI = 16
37
One layer:
TPMI = 17
38
One layer:
TPMI = 18
39
One layer:
TPMI = 19
40
One layer:
TPMI = 20
41
One layer:
TPMI = 21
42
One layer:
TPMI = 22
43
One layer:
TPMI = 23
44
One layer:
TPMI = 24
45
One layer:
TPMI = 25
46
One layer:
TPMI = 26
47
One layer:
TPMI = 27
48
Two layers:
TPMI = 14
49
Two layers:
TPMI = 14
50
Two layers:
TPMI = 15
51
Two layers:
TPMI = 16
52
Two layers:
TPMI = 17
53
Two layers:
TPMI = 18
54
Two layers:
TPMI = 19
55
Two layers:
TPMI = 20
55
Two layers:
TPMI = 21
56
Three layers:
TPMI = 3
57
Three layers:
TPMI = 4
58
Three layers:
TPMI = 5
59
Three layers:
TPMI = 6
60
Four layers:
TPMI = 3
61
Four layers:
TPMI = 4;
and
transmitting, by the network apparatus, the transmission parameter indication information.

### Claim 2 (depends on 1)

The method according to claim 1, wherein length of the transmission parameter indication information is 4 bits, 5 bits or 6 bits depending on which one of the three codebook subset configurations is used in a terminal device.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the method comprises: receiving, by the network apparatus, coherence capability indication information indicating the one codebook subset configuration.

### Claim 4

A network apparatus, comprising:
at least one processor; and
one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the network apparatus to implement operations comprising:
generating transmission parameter indication information indicating an index in an index set of one codebook subset configuration of three codebook subset configurations, wherein the three codebook subset configurations are related to fully coherent, partial coherent, and incoherent respectively, wherein each index in the index set is associated with a quantity of transmission layer and a precoding matrix indicator, and a combination of the quantity of transmission layers and the precoding matrix indicator indicates a respective precoding matrix, and an index set of the codebook subset configuration related to fully coherent includes M first indexes, an index set of the codebook subset configuration related to partial coherent includes N second indexes, and an index set of the codebook subset configuration related to incoherent includes K third indexes, M is an integer larger than N, and N is an integer larger than K, wherein a third index and a second index with a same index value are associated with a same quantity of transport layers and a same precoding matrix indicator, and a second index and a first index with a same index value are associated with a same quantity of transport layers and a same precoding matrix indicator, and at least first 12 third indexes are the same as first 12 second indexes, and at least first 32 second indexes are the same as first 32 first indexes; determine a transmission layer and precoding matrix associated with the index according to the transmission parameter indication information, wherein contents of the three codebook subset configurations are represented by the following table:
Field
fully coherent
Field
partial coherent
Field
Incoherent
index
transmission
index
transmission
index
transmission
0
One layer:
0
One layer:
0
One layer:
TPMI = 0
TPMI = 0
TPMI = 0
1
One layer:
1
One layer:
1
One layer:
TPMI = 1
TPMI = 1
TPMI = 1
2
One layer:
2
One layer:
2
One layer:
TPMI = 2
TPMI = 2
TPMI = 2
3
One layer:
3
One layer:
3
One layer:
TPMI = 3
TPMI = 3
TPMI = 3
4
Two layers:
4
Two layers:
4
Two layers:
TPMI = 0
TPMI = 0
TPMI = 0
5
Two layers:
5
Two layers:
5
Two layers:
TPMI = 1
TPMI = 1
TPMI = 1
6
Two layers:
6
Two layers:
6
Two layers:
TPMI = 2
TPMI = 2
TPMI = 2
7
Two layers:
7
Two layers:
7
Two layers:
TPMI = 3
TPMI = 3
TPMI = 3
8
Two layers:
8
Two layers:
8
Two layers:
TPMI = 4
TPMI = 4
TPMI = 4
9
Two layers:
9
Two layers:
9
Two layers:
TPMI = 5
TPMI = 5
TPMI = 5
10
Three layers:
10
Three layers:
10
Three layers:
TPMI = 0
TPMI = 0
TPMI = 0
11
Four layers:
11
Four layers:
11
Four layers:
TPMI = 0
TPMI = 0
TPMI = 0
12
One layer:
12
One layer:
TPMI = 4
TPMI = 4
13
One layer:
13
One layer:
TPMI = 5
TPMI = 5
14
One layer:
14
One layer:
TPMI = 6
TPMI = 6
15
One layer:
15
One layer:
TPMI = 7
TPMI = 7
16
One layer:
16
One layer:
TPMI = 8
TPMI = 8
17
One layer:
17
One layer:
TPMI = 9
TPMI = 9
18
One layer:
18
One layer:
TPMI = 10
TPMI = 10
19
One layer:
19
One layer:
TPMI = 11
TPMI = 11
20
Two layers:
20
Two layers:
TPMI = 6
TPMI = 6
21
Two layers:
21
Two layers:
TPMI = 7
TPMI = 7
22
Two layers:
22
Two layers:
TPMI = 8
TPMI = 8
23
Two layers:
23
Two layers:
TPMI = 9
TPMI = 9
24
Two layers:
24
Two layers:
TPMI = 10
TPMI = 10
25
Two layers:
25
Two layers:
TPMI = 11
TPMI = 11
26
Two layers:
26
Two layers:
TPMI = 12
TPMI = 12
27
Two layers:
27
Two layers:
TPMI = 13
TPMI = 13
28
Three layers:
28
Three layers:
TPMI = 1
TPMI = 1
29
Three layers:
29
Three layers:
TPMI = 2
TPMI = 2
30
Four layers:
30
Four layers:
TPMI = 1
TPMI = 1
31
Four layers:
31
Four layers:
TPMI = 2
TPMI = 2
32
One layer:
TPMI = 12
33
One layer:
TPMI = 13
34
One layer:
TPMI = 14
35
One layer:
TPMI = 15
36
One layer:
TPMI = 16
37
One layer:
TPMI = 17
38
One layer:
TPMI = 18
39
One layer:
TPMI = 19
40
One layer:
TPMI = 20
41
One layer:
TPMI = 21
42
One layer:
TPMI = 22
43
One layer:
TPMI = 23
44
One layer:
TPMI = 24
45
One layer:
TPMI = 25
46
One layer:
TPMI = 26
47
One layer:
TPMI = 27
48
Two layers:
TPMI = 14
49
Two layers:
TPMI = 14
50
Two layers:
TPMI = 15
51
Two layers:
TPMI = 16
52
Two layers:
TPMI = 17
53
Two layers:
TPMI = 18
54
Two layers:
TPMI = 19
55
Two layers:
TPMI = 20
55
Two layers:
TPMI = 21
56
Three layers:
TPMI = 3
57
Three layers:
TPMI = 4
58
Three layers:
TPMI = 5
59
Three layers:
TPMI = 6
60
Four layers:
TPMI = 3
61
Four layers:
TPMI = 4;
and
transmitting the transmission parameter indication information.

### Claim 5 (depends on 4)

The network apparatus according to claim 4, wherein length of the transmission parameter indication information is 4 bits, 5 bits or, 6 bits depending on which one of the three codebook subset configurations is used in a terminal device.

### Claim 6 (depends on 4)

The network apparatus according to claim 4, wherein the operations comprise:
receiving coherence capability indication information indicating the one codebook subset configuration.

### Claim 7 (depends on 4)

The network apparatus according to claim 4, wherein the network apparatus is a chip or a network device.

### Claim 8

A non-transitory computer-readable storage medium having instructions recorded thereon which, when executed by at least one processor, cause the at least one processor to perform operations comprising:
generating transmission parameter indication information indicating an index in an index set of one codebook subset configuration of three codebook subset configurations, wherein the three codebook subset configurations are related to fully coherent, partial coherent, and incoherent respectively, wherein each index in the index set is associated with a quantity of transmission layer and a precoding matrix indicator, and a combination of the quantity of transmission layers and the precoding matrix indicator indicates a respective precoding matrix, and an index set of the codebook subset configuration related to fully coherent includes M first indexes, an index set of the codebook subset configuration related to partial coherent includes N second indexes, and an index set of the codebook subset configuration related to incoherent includes K third indexes, M is an integer larger than N, and N is an integer larger than K, wherein a third index and a second index with a same index value are associated with a same quantity of transport layers and a same precoding matrix indicator, and a second index and a first index with a same index value are associated with a same quantity of transport layers and a same precoding matrix indicator, and at least first 12 third indexes are the same as first 12 second indexes, and at least first 32 second indexes are the same as first 32 first indexes, wherein contents of the three codebook subset configurations are represented by the following table:
Field
fully coherent
Field
partial coherent
Field
Incoherent
index
transmission
index
transmission
index
transmission
0
One layer:
0
One layer:
0
One layer:
TPMI = 0
TPMI = 0
TPMI = 0
1
One layer:
1
One layer:
1
One layer:
TPMI = 1
TPMI = 1
TPMI = 1
2
One layer:
2
One layer:
2
One layer:
TPMI = 2
TPMI = 2
TPMI = 2
3
One layer:
3
One layer:
3
One layer:
TPMI = 3
TPMI = 3
TPMI = 3
4
Two layers:
4
Two layers:
4
Two layers:
TPMI = 0
TPMI = 0
TPMI = 0
5
Two layers:
5
Two layers:
5
Two layers:
TPMI = 1
TPMI = 1
TPMI = 1
6
Two layers:
6
Two layers:
6
Two layers:
TPMI = 2
TPMI = 2
TPMI = 2
7
Two layers:
7
Two layers:
7
Two layers:
TPMI = 3
TPMI = 3
TPMI = 3
8
Two layers:
8
Two layers:
8
Two layers:
TPMI = 4
TPMI = 4
TPMI = 4
9
Two layers:
9
Two layers:
9
Two layers:
TPMI = 5
TPMI = 5
TPMI = 5
10
Three layers:
10
Three layers:
10
Three layers:
TPMI = 0
TPMI = 0
TPMI = 0
11
Four layers:
11
Four layers:
11
Four layers:
TPMI = 0
TPMI = 0
TPMI = 0
12
One layer:
12
One layer:
TPMI = 4
TPMI = 4
13
One layer:
13
One layer:
TPMI = 5
TPMI = 5
14
One layer:
14
One layer:
TPMI = 6
TPMI = 6
15
One layer:
15
One layer:
TPMI = 7
TPMI = 7
16
One layer:
16
One layer:
TPMI = 8
TPMI = 8
17
One layer:
17
One layer:
TPMI = 9
TPMI = 9
18
One layer:
18
One layer:
TPMI = 10
TPMI = 10
19
One layer:
19
One layer:
TPMI = 11
TPMI = 11
20
Two layers:
20
Two layers:
TPMI = 6
TPMI = 6
21
Two layers:
21
Two layers:
TPMI = 7
TPMI = 7
22
Two layers:
22
Two layers:
TPMI = 8
TPMI = 8
23
Two layers:
23
Two layers:
TPMI = 9
TPMI = 9
24
Two layers:
24
Two layers:
TPMI = 10
TPMI = 10
25
Two layers:
25
Two layers:
TPMI = 11
TPMI = 11
26
Two layers:
26
Two layers:
TPMI = 12
TPMI = 12
27
Two layers:
27
Two layers:
TPMI = 13
TPMI = 13
28
Three layers:
28
Three layers:
TPMI = 1
TPMI = 1
29
Three layers:
29
Three layers:
TPMI = 2
TPMI = 2
30
Four layers:
30
Four layers:
TPMI = 1
TPMI = 1
31
Four layers:
31
Four layers:
TPMI = 2
TPMI = 2
32
One layer:
TPMI = 12
33
One layer:
TPMI = 13
34
One layer:
TPMI = 14
35
One layer:
TPMI = 15
36
One layer:
TPMI = 16
37
One layer:
TPMI = 17
38
One layer:
TPMI = 18
39
One layer:
TPMI = 19
40
One layer:
TPMI = 20
41
One layer:
TPMI = 21
42
One layer:
TPMI = 22
43
One layer:
TPMI = 23
44
One layer:
TPMI = 24
45
One layer:
TPMI = 25
46
One layer:
TPMI = 26
47
One layer:
TPMI = 27
48
Two layers:
TPMI = 14
49
Two layers:
TPMI = 14
50
Two layers:
TPMI = 15
51
Two layers:
TPMI = 16
52
Two layers:
TPMI = 17
53
Two layers:
TPMI = 18
54
Two layers:
TPMI = 19
55
Two layers:
TPMI = 20
55
Two layers:
TPMI = 21
56
Three layers:
TPMI = 3
57
Three layers:
TPMI = 4
58
Three layers:
TPMI = 5
59
Three layers:
TPMI = 6
60
Four layers:
TPMI = 3
61
Four layers:
TPMI = 4;
and
transmitting the transmission parameter indication information.

### Claim 9 (depends on 8)

The non-transitory computer-readable storage medium according to claim 8, wherein length of the transmission parameter indication information is 4 bits, 5 bits, or 6 bits depending on which one of the three codebook subset configurations is used in a terminal device.

### Claim 10 (depends on 8)

The non-transitory computer-readable storage medium according to claim 8, wherein the operations comprise:
receiving coherence capability indication information indicating the one codebook sub set configuration.

### Claim 11 (depends on 1)

The method according to claim 1, further comprising: receiving, from a terminal device, data according to the transmission parameter indication information.

### Claim 12 (depends on 11)

The method according to claim 11, wherein the data is received according to a transmission layer determined based on the transmission parameter indication information.

### Claim 13 (depends on 11)

The method according to claim 11, wherein the data is received according to a precoding matrix determined based on the transmission parameter indication information.

### Claim 14 (depends on 4)

The network apparatus according to claim 4, wherein the operations further comprise: receiving, from a terminal device, data according to the transmission parameter indication information.

### Claim 15 (depends on 14)

The network apparatus according to claim 14, wherein the data is received according to a transmission layer determined based on the transmission parameter indication information.

### Claim 16 (depends on 14)

The network apparatus according to claim 14, wherein the data is received according to a precoding matrix determined based on the transmission parameter indication information.

### Claim 17 (depends on 8)

The non-transitory computer-readable storage medium according to claim 8, wherein the operations further comprise: receiving, from a terminal device, data according to the transmission parameter indication information.

### Claim 18 (depends on 17)

The non-transitory computer-readable storage medium according to claim 17, wherein the data is received according to a transmission layer determined based on the transmission parameter indication information.

### Claim 19 (depends on 17)

The non-transitory computer-readable storage medium according to claim 17, wherein the data is received according to a precoding matrix determined based on the transmission parameter indication information.