CN-121986527-A - Data transmission method, device and system

Abstract

The application provides a data transmission method, a device and a system, which relate to the field of wireless communication perception, and the method comprises the steps of acquiring information of N father surface elements and information of M child surface elements, wherein the information of the N father surface elements is used for representing the local or whole of a target object, the information of the M child surface elements is used for representing the whole of the target object, and N and M are positive integers; determining a child bin associated with each of the N parent bins from the M child bins according to association criteria of the parent bins and the child bins; information of child cells associated with each of the N parent cells is transmitted to the second communication device. Based on the method, the whole information and the local detail information of the target object can be considered, and the transmission bandwidth occupied by the transmission face information can be effectively controlled.

Inventors

• ZHANG PING
• PENG XIAOHUI
• LUO JIAJIN
• MA MENGYAO

Assignees

• 华为技术有限公司

Dates

Publication Date

20260505

Application Date

20230928

Claims (20)

1. A method of data transmission, the method being applied to a first communication device, the method comprising: Acquiring information of N parent surface elements and information of M child surface elements, wherein the information of the N parent surface elements is used for representing a part or a whole of a target object, the information of the M child surface elements is used for representing the whole of the target object, and the N and the M are positive integers; Determining a child bin associated with each parent bin of the N parent bins from the M child bins according to association criteria of the parent bins and the child bins; Information of child cells associated with each of the N parent cells is transmitted to a second communication device.
2. The method of claim 1, wherein the association criteria includes an association parameter threshold for determining whether there are child primitives associated with the N parent primitives among the M child primitives.
3. The method of claim 2, wherein the information of the N parent cells comprises at least one of texture information and texture information, and wherein the information of the child cells associated with each of the N parent cells comprises at least one of texture information, dielectric constant, permeability, scattering coefficient, and cell quality.
4. A method according to claim 2 or 3, wherein prior to said determining a child bin associated with each of said N parent bins from said M child bins according to parent-child bin association criteria, said method further comprises: the association criteria is received from the second communication device.
5. The method of any of claims 2 to 4, wherein prior to the obtaining information for N parent bins, the method further comprises: Transmitting information of L parent cells to the second communication device, wherein the information of the L parent cells is used for representing the whole of the target object, L is greater than or equal to N, and L is an integer; the obtaining information of the N parent surface elements includes: And receiving indication information from the second communication device, wherein the indication information is used for indicating the N parent surface elements.
6. The method of any one of claims 2 to 4, wherein prior to the obtaining information for N parent bins, the method further comprises: Receiving a bin quality criterion from the second communication device; the obtaining information of the N parent surface elements includes: And determining the N parent surface elements from L parent surface elements according to the surface element quality standard, wherein the information of the L parent surface elements is used for representing the whole object, L is greater than or equal to N, and L is an integer.
7. The method of any of claims 2-6, wherein the N parent cells comprise a first parent cell, the M child cells comprise a first child cell, and determining a child cell associated with each of the N parent cells from the M child cells according to parent-child cell association criteria comprises: Determining a first set of points including sampling points sampled from the first parent bin and a second set of points including sampling points sampled from the first child bin; Determining a chamfer distance between the first set of points and the second set of points; And under the condition that the chamfering distance is smaller than or equal to a first threshold value, the first child surface element is associated with the first parent surface element, and the first threshold value belongs to the association parameter threshold value.
8. The method of claim 7, wherein the sampling point sampled from the first parent surface element comprises a vertex of the first parent surface element, and wherein the sampling point sampled from the first child surface element comprises a vertex of the first child surface element.
9. The method of any of claims 2-6, wherein the N parent cells comprise a first parent cell, the M child cells comprise a first child cell, and determining a child cell associated with each of the N parent cells from the M child cells according to parent-child cell association criteria comprises: Determining N cluster point clouds, wherein a first point cloud in the N cluster point clouds corresponds to a first parent surface element in the N parent surface elements; projecting the first point cloud to the first sub-surface element; And in the case that a first condition is met, associating the first child surface element with the first parent surface element, wherein the first condition is any one of that the number of points of the first point cloud projected onto the first child surface element is larger than or equal to a second threshold value, or that the density of the points of the first point cloud projected onto the first child surface element is larger than or equal to a third threshold value, or that the maximum value of the distance between the first point cloud and the first child surface element is smaller than or equal to a fourth threshold value, and the second threshold value, the third threshold value or the fourth threshold value belongs to the association parameter threshold value.
10. A method of data transmission, the method being applied to a second communication device, the method comprising: transmitting indication information to a first communication device, wherein the indication information is used for indicating N parent surface elements, the information of the N parent surface elements is used for representing the part or the whole of a target object, and N is a positive integer; Information from child primitives associated with each parent primitive in the N parent primitives is received.
11. The method of claim 10, wherein prior to the receiving information from child primitives associated with each parent primitive of the N parent primitives, the method further comprises: An association criterion is sent to the first communication device, the association criterion comprising an association parameter threshold for determining whether there are child bins associated with the N parent bins.
12. The method according to claim 10 or 11, wherein the information of the N parent cells comprises at least one of texture information and texture information, and the information of the child cells associated with each of the N parent cells comprises at least one of texture information, dielectric constant, permeability, scattering coefficient, and cell quality.
13. The method according to any one of claims 10 to 12, wherein prior to said sending of the indication information to the first communication device, the method further comprises: Receiving information from L parent bins of the first communication device, the information of the L parent bins being used to characterize the entirety of the target object, the L being greater than or equal to the N, and the L being an integer; And determining indication information according to the information of the L parent surface elements, wherein the indication information is used for indicating the N parent surface elements.
14. The method of claim 13, wherein prior to said transmitting the indication information to the first communication device, the method further comprises: And sending a bin quality standard to the first communication device, wherein the bin quality standard is used for indicating the first communication device to determine the N parent bins from L parent bins, L is greater than or equal to N, L is an integer, and information of the L parent bins is used for representing the whole of the target object.
15. An apparatus for data transmission, the apparatus comprising: The device comprises an acquisition unit, a storage unit and a processing unit, wherein the acquisition unit is used for acquiring information of N parent surface elements and information of M child surface elements, the information of the N parent surface elements is used for representing a part or a whole of a target object, the information of the M child surface elements is used for representing the whole of the target object, and N and M are positive integers; A determining unit, configured to determine, from the M child primitives, child primitives associated with each parent primitive of the N parent primitives according to association criteria of the parent primitive and the child primitive; And a transmitting unit configured to transmit information of child cells associated with each of the N parent cells to the second communication device.
16. The apparatus of claim 15, wherein the association criteria comprises an association parameter threshold for determining whether there are child primitives associated with the N parent primitives among the M child primitives.
17. The apparatus of claim 16, wherein the information for the N parent bins includes at least one of texture information and texture information, and wherein the information for the child bins associated with each of the N parent bins includes at least one of texture information, dielectric constant, permeability, scattering coefficient, and bin quality.
18. The apparatus according to claim 16 or 17, wherein the obtaining unit is further configured, before the determining unit determines a child bin associated with each of the N parent bins from the M child bins according to association criteria of parent bins and child bins, to: the association criteria is received from the second communication device.
19. The apparatus according to any one of claims 16 to 18, wherein before the acquiring unit acquires information of N parent cells, the transmitting unit is further configured to transmit information of L parent cells to the second communication apparatus, the information of L parent cells being used to characterize the whole of the target object, the L being greater than or equal to the N, and the L being an integer; The acquisition unit is specifically configured to receive indication information from the second communication device, where the indication information is used to indicate the N parent bins.
20. The apparatus according to any one of claims 16 to 18, wherein before the acquiring unit acquires the information of N parent cells, the acquiring unit is further configured to receive a cell quality criterion from the second communication apparatus; The acquisition unit is specifically configured to determine the N parent primitives from L parent primitives according to the primitive quality standard, where information of the L parent primitives is used to characterize the whole object, L is greater than or equal to N, and L is an integer.

Description

Data transmission method, device and system Technical Field The present application relates to the field of wireless communication awareness, and in particular, to a method, apparatus, and system for data transmission. Background In recent years, wireless sensing technology has attracted extensive academic attention. The communication perception integrated system uses a communication base station and user equipment as perception nodes to image an interesting target scene and acquire a Point Cloud (PC) for imaging. However, the point number of the point cloud for representing the urban scene is generally above tens of millions, and the data volume is large, so that high requirements are placed on storage and transmission. Compared with the transmission of unordered point cloud data, the point cloud is rebuilt into a face element (mesh) model with a definite geometric topological relation, so that the transmission cost can be reduced, and the air interface resource cost can be saved. However, in an actual target scene, there are usually a plurality of different types of objects, and only the outline of the target in the scene can be represented based on the bin information determined by the bin model with lower bin resolution, and the plurality of different types of objects cannot be distinguished. In order to be able to distinguish between a number of different types of objects, it is necessary to increase the binning resolution of the binning model. However, if the resolution of the bin information is higher, the transmission bandwidth of the bin information needs to be occupied more, and if the resolution of the bin information is lower, the bin information respectively describing a plurality of different types of objects cannot distinguish the plurality of different types of objects, thereby reducing the accuracy of environment perception. It is often difficult to trade off between transmission bandwidth occupied by transmitting the bin information and the bin resolution. Disclosure of Invention The application provides a data transmission method, a data transmission device and a data transmission system, which can characterize the information of a target object through surface element information, give consideration to the whole information and the local detail information of the target object, and can effectively control the transmission bandwidth occupied by the surface element information. In a first aspect, a data transmission method is provided, and the method is applied to a first communication device, and comprises the steps of obtaining information of N father cells and information of M son cells, wherein the information of the N father cells is used for representing a part or whole of a target object, the information of the M son cells is used for representing the whole of the target object, N and M are positive integers, determining son cells associated with each father cell in the N father cells from the M son cells according to association criteria of the father cells and the son cells, and sending the information of the son cells associated with each father cell in the N father cells to a second communication device. The association criterion may be information stored locally in the first communication device, or information acquired from the outside by the first communication device, for example. For example, the above information of the child cells associated with each of the N parent cells may include information of both the child cells on the one hand and association information between the child cells and the parent cells on the other hand, so that the second communication device can determine the parent cell to which the received information of the child cells corresponds, and thus correspond the information of the child cells to a specific portion of the target object. By way of example, where the parent and child elements described above both correspond to different identification information, assuming that child element 1, child element 2, and child element 3 are associated with parent element 1, where the identification information of parent element 1 is 1, the identification information of child element 1 is a, the identification information of child element 2 is b, and the identification information of child element 3 is c, then the association information between parent element 1 and child element 1 may be expressed as 1-a, and similarly, the association information between parent element 1 and child element 2 may be expressed as 1-b, and the association information between parent element 1 and child element 3 may be expressed as 1-c. Based on the technical scheme, the acquired information of the N parent cells can be further finely identified according to the association criteria, so that the information of the child cells associated with each parent cell in the N parent cells is obtained, the attribute information corresponding to the N parent cells is enriched, the second com