Granted Patent B2

US 12,261,798 · App. 17/773,643 · Granted Mar 25, 2025

Inventors: Yong Li (Shenzhen, CN); Hao Wu (Shenzhen, CN); Zhaohua Lu (Shenzhen, CN); Yuxin Wang (Shenzhen, CN)

Assignee: ZTE CORPORATION

H04L5/0051H04B7/0456

Abstract

Claims (72)

1. An indication method, applied to a first communication node, comprising:

determining indication information of a target reference signal resource that comprises an index of the target reference signal resource and a corresponding relationship between an antenna port corresponding to the target reference signal resource and to an antenna port of a transport channel, wherein the corresponding relationship is represented through a precoding matrix, the antenna port corresponding to the target reference signal resource is used by a second communication node for transmitting the target reference signal resource, and the antenna port of the transport channel is an antenna port used by the transport channel of the second communication node; and

transmitting the indication information to the second communication node.

2. The indication method of claim 1 , wherein the antenna port corresponding to the target reference signal resource is the same as the antenna port of the transport channel.

3. The indication method of claim 1 , wherein a frequency domain of the transport channel is divided into M channel transmission frequency domain groups, and the target reference signal resource is determined according to the M channel transmission frequency domain groups, wherein M is a positive integer.

4. The indication method of claim 3 , wherein a frequency domain range of each of the M channel transmission frequency domain groups is determined in at least one of the following manners:

indicating by the first communication node;

determining according to a frequency domain range of the transport channel; or

determining according to M and a frequency domain range of the transport channel.

5. The indication method of claim 3 , wherein the frequency domain of the transport channel is divided in at least one of the following manners:

determining a frequency domain range of one channel transmission frequency domain group of the M channel transmission frequency domain groups according to a frequency domain range of another channel transmission frequency domain group of the M channel transmission frequency domain groups; or

determining that a frequency domain range of one channel transmission frequency domain group comprises N setting frequency domain units, wherein N is a positive integer, and N is predefined by a protocol or determined by the first communication node.

6. The indication method of claim 3 , wherein M is determined according to at least one of the following:

a number of bits for indicating the target reference signal resource;

for each of the M channel transmission frequency domain groups, a number of reference signal resources allowed to be selected from a reference signal resource set;

a number of reference signal resources comprised in a reference signal resource set, wherein the target reference signal resource is selected from the reference signal resource set;

a magnitude of a frequency domain range of the transport channel; or

a maximum value of a frequency domain range of the transport channel.

7. The indication method of claim 3 , wherein the indication information satisfies at least one of the following:

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, and one index identifier being used for indicating target reference signal resources under at least two numbers;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, and a second index identifier mapped into a second bit field and the first index identifier jointly indicate a target reference signal resource of a second channel transmission frequency domain group;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, and a second index identifier mapped into a second bit field and a number of target reference signal resources of the first channel transmission frequency domain group jointly indicate a target reference signal resource of a second channel transmission frequency domain group;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to a number of target reference signal resources;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, and a second index identifier mapped into a second bit field being used for indicating a target reference signal resource of a second channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to a number of target reference signal resources indicated by the second bit field;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to one value of possible values of a number of to-be-indicated target reference signal resources in a reference signal resource set;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to one value of possible values of a number of indexes of to-be-indicated target reference signal resources in a reference signal resource set;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to a maximum value of possible values of a number of indexes of to-be-indicated target reference signal resources in a reference signal resource set; or

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to a maximum value of a frequency domain range of the transport channel.

8. The indication method of claim 1 , wherein a frequency domain of the transport channel is divided into M channel transmission frequency domain groups, and the precoding matrix is determined according to the M channel transmission frequency domain groups, wherein M is a positive integer.

9. The indication method of claim 8 , wherein the indication information satisfies at least one of the following:

a number of layers of a precoding matrix of a first channel transmission frequency domain group indicated by a first index identifier mapped into a first bit field and a second index identifier mapped into a second bit field jointly indicating a precoding matrix of a second channel transmission frequency domain group;

a first index identifier mapped into a first bit field being used for indicating a precoding matrix of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined by a maximum value of possible values of a number of indexes of layers of a to-be-indicated precoding matrix; or

a first index identifier mapped into a first bit field being used for indicating a precoding matrix of a first channel transmission frequency domain group and a number of layers of the precoding matrix, wherein a bit wide of the first bit field is determined according to a maximum value of a frequency domain range of the transport channel.

10. The indication method of claim 8 , wherein a frequency domain range of each of the M channel transmission frequency domain groups is determined in at least one of the following manners:

indicating by the first communication node;

determining according to a frequency domain range of the transport channel; or

determining according to M and a frequency domain range of the transport channel.

11. The indication method of claim 8 , wherein the frequency domain of the transport channel is divided in at least one of the following manners:

determining a frequency domain range of one channel transmission frequency domain group of the M channel transmission frequency domain groups according to a frequency domain range of another channel transmission frequency domain group of the M channel transmission frequency domain groups; or

determining that a frequency domain range of one channel transmission frequency domain group comprises N setting frequency domain units, wherein N is a positive integer, and N is predefined by a protocol or determined by the first communication node.

12. The indication method of claim 8 , wherein M is determined according to at least one of the following:

a number of bits for indicating the target reference signal resource;

for each of the M channel transmission frequency domain groups, a number of reference signal resources allowed to be selected from a reference signal resource set;

a number of reference signal resources comprised in a reference signal resource set, wherein the target reference signal resource is selected from the reference signal resource set;

a magnitude of a frequency domain range of the transport channel; or

a maximum value of a frequency domain range of the transport channel.

13. The indication method of claim 8 , wherein the indication information satisfies at least one of the following:

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, and one index identifier being used for indicating target reference signal resources under at least two numbers;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, and a second index identifier mapped into a second bit field and the first index identifier jointly indicate a target reference signal resource of a second channel transmission frequency domain group;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, and a second index identifier mapped into a second bit field and a number of target reference signal resources of the first channel transmission frequency domain group jointly indicate a target reference signal resource of a second channel transmission frequency domain group;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to a number of target reference signal resources;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, and a second index identifier mapped into a second bit field being used for indicating a target reference signal resource of a second channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to a number of target reference signal resources indicated by the second bit field;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to one value of possible values of a number of to-be-indicated target reference signal resources in a reference signal resource set;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to one value of possible values of a number of indexes of to-be-indicated target reference signal resources in a reference signal resource set;

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to a maximum value of possible values of a number of indexes of to-be-indicated target reference signal resources in a reference signal resource set; or

a first index identifier mapped into a first bit field being used for indicating a target reference signal resource of a first channel transmission frequency domain group, wherein a bit wide of the first bit field is determined according to a maximum value of a frequency domain range of the transport channel.

14. A non-transitory computer-readable storage medium configured to store a computer program, wherein the computer program, when executed by a processor, implements the indication method of claim 1 .

15. A method for receiving indication information, applied to a second communication node, comprising:

receiving indication information of a target reference signal resource transmitted by a first communication node, wherein the indication information comprises an index of the target reference signal resource and a corresponding relationship between an antenna port corresponding to the target reference signal resource and an antenna port of a transport channel, the corresponding relationship is represented through a precoding matrix, the antenna port corresponding to the target reference signal resource is used for transmitting the target reference signal resource, and the antenna port of the transport channel is an antenna port used by the transport channel of the second communication node; and

determining the antenna port corresponding to the target reference signal resource and the antenna port of the transport channel according to the indication information.

16. A second communication node, comprising:

at least one processor; and

a storage apparatus, which is configured to store at least one program;

wherein the at least one program, when executed by the at least one processor, causes the at least one processor to perform the method for receiving indication information of claim 13 .

17. A non-transitory computer-readable storage medium configured to store a computer program, wherein the computer program, when executed by a processor, implements the method for receiving indication information of claim 15 .

18. A first communication node, comprising:

at least one processor; and

a storage apparatus, which is configured to store at least one program;

wherein the at least one program, when executed by the at least one processor, causes the at least one processor to perform the following:

determining indication information of a target reference signal resource that comprises an index of the target reference signal resource and a corresponding relationship between an antenna port corresponding to the target reference signal resource and an antenna port of a transport channel, wherein the corresponding relationship is represented through a precoding matrix, the antenna port corresponding to the target reference signal resource is used by a second communication node for transmitting the target reference signal resource, and the antenna port of the transport channel is an antenna port used by the transport channel of the second communication node; and

transmitting the indication information to the second communication node.

19. The first communication node of claim 18 , wherein the antenna port corresponding to the target reference signal resource is the same as the antenna port of the transport channel.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (27)