# US 12,003,303 B2 · Feedback method and acquisition method for grouping indication information and device

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- Number: US 12,003,303 B2
- Document ID: US12003303B2
- Status: Granted
- Kind: B2
- Application number: 17/581,707
- Filed: 2022-01-21
- Published: 2022-07-14
- Granted: 2024-06-04
- Earliest claimed: 2016-08-11
- Assignees: Xi'an Zhongxing New Software Co., Ltd.
- Applicants: Xi'an Zhongxing New Software Co., Ltd.
- Inventors: Shujuan Zhang; Yijian Chen; Yu Ngok Li; Yuhong Gong; Zhaohua Lu
- Web page: https://patentgrep.com/patent/US12003303B2

## CPC

- H04B 7/0639: {Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection}
- H04B 7/06: at the transmitting station
- H04B 7/063: {Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode selection}
- H04B 7/066: {Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM]}
- H04B 7/06966: {using beam correspondence; using channel reciprocity, e.g. downlink beam training based on uplink sounding reference signal [SRS]}
- H04B 7/0848: {Joint weighting}
- H04B 7/088: {using beam selection}
- H04L 5/00: Arrangements affording multiple use of the transmission path
- H04L 5/0051: {of dedicated pilots, i.e. pilots destined for a single user or terminal}
- H04L 5/0094: {Indication of how sub-channels of the path are allocated}
- H04W 4/08: User group management
- H04B: TRANSMISSION
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Provided are a method and device for acquiring grouping indication information. The method for acquiring grouping indication information includes: acquiring second-type grouping indication information, wherein the second-type grouping indication information comprises grouping manner indication information and information on resources in a group; determining a transmission parameter of a reference signal corresponding to the second-type grouping indication information according to the second-type grouping indication information; and transmitting the reference signal according to the transmission parameter; wherein a resource of the resources in the group comprises a transmission port resource, a transmission frequency domain resource, a transmission sequence resource and a transmission time domain resource.

## Claims

### Claim 1

A method for feeding back grouping indication information, applying by a terminal device, comprising:
determining a candidate resource set which comprises multiple resources for beam training, wherein each of the multiple resources corresponds to a transmitting beam at a base station;
receiving a pilot signal transmitted on a resource of the candidate resource set from the base station;
determining a first-type resource group comprising more than one resource, wherein the more than one resource is selected from the multiple resources in the candidate resource set by the terminal device according to the received pilot signal and whether the terminal device has a capability to generate a receiving beam manner at one time instant to receive the more than one resource; and
feeding back index information of each of the more than one resource in the first-type resource group to the base station, wherein the first-type resource group corresponds to a receiving beam manner of the terminal device at one time instant and the terminal device has the capability to generate the receiving beam manner at one time instant to receive the more than one resource in the first-type resource group, wherein the receiving beam manner comprises one receiving beam or one receiving beam combination, wherein the index information of each of the more than one resource is an index of the each resource among the multiple resources in the candidate resource set;
wherein each resource of the multiple resources in the candidate resource set comprises following resource types of a signal on the each resource: a transmission antenna port resource, a transmission frequency domain resource, a transmission sequence resource and a transmission time domain resource.

### Claim 2 (depends on 1)

The method of claim 1, wherein the candidate resource set comprises Q second-type resource groups, wherein Q is an integer greater than or equal to 1.

### Claim 3 (depends on 2)

The method of claim 2, comprising at least one of the following:
resources in the first-type resource group belong to more groups of the Q second-type resource groups.

### Claim 4 (depends on 1)

The method of claim 1, wherein resources in the candidate resource set are used for receiving a synchronization signal.

### Claim 5 (depends on 1)

A terminal device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer program is configured to, when executed by the processor, implement the method of claim 1.

### Claim 6 (depends on 1)

A non-transitory computer-readable storage medium storing a computer program, wherein the computer program is configured to, when executed by the processor, implement the method of claim 1.

### Claim 7 (depends on 1)

The method of claim 1, wherein
resources in the first-type resource groups are sequentially arranged according to receiving qualities of the resources.

### Claim 8

A method for receiving feedback information, applying by a base station, comprising:
transmitting information about a candidate resource set which comprises multiple resources for beam training to a terminal device, wherein each of the multiple resources corresponds to a transmitting beam at the base station;
transmitting a pilot signal on a resource in the candidate resource set to the terminal device;
receiving feedback information from the terminal device, wherein the feedback information comprises index information of each of more than one resource in a first-type resource group determined by the terminal device, wherein the more than one resource is selected from the multiple resources in the candidate resource set by the terminal device according to the pilot signal received by the terminal device and whether the terminal device has a capability to generate a receiving beam manner at one time instant to receive the more than one resource, wherein the first-type resource group corresponds to a receiving beam manner of the terminal device at one time instant and the terminal device has the capability to generate the receiving beam manner at one time instant to receive the more than one resource in the first-type resource group, wherein the receiving beam manner comprises one receiving beam or one receiving beam combination, wherein the index information of each of the more than one resource is an index of the each resource among the multiple resources in the candidate resource set; and
performing scheduling and/or signal transmission according to the feedback information;
wherein each resource of the multiple resources in the candidate resource set comprises following resource types of a signal on the each resource: a transmission antenna port resource, a transmission frequency domain resource, a transmission sequence resource and a transmission time domain resource.

### Claim 9 (depends on 8)

The method of claim 8, wherein the candidate resource set comprises Q second-type resource groups, wherein Q is an integer greater than or equal to 1.

### Claim 10 (depends on 9)

The method of claim 9, comprising at least one of the following:
resources in the first-type resource group belong to more groups of the Q second-type resource groups.

### Claim 11 (depends on 8)

The method of claim 8, wherein resources in the candidate resource set are used for transmitting a synchronization signal.

### Claim 12 (depends on 8)

A base station, comprising: a memory and a processor, wherein the memory stores a computer program, and the computer program is configured to, when executed by the processor, implement the method of claim 8.

### Claim 13 (depends on 8)

A non-transitory computer-readable storage medium storing a computer program, wherein the computer program is configured to, when executed by the processor, implement the method of claim 8.

### Claim 14 (depends on 8)

The method of claim 8, wherein
resources in the first-type resource groups are sequentially arranged according to receiving qualities of the resources.