WO2018006710A1

WO2018006710A1 - Data transmission method and apparatus

Info

Publication number: WO2018006710A1
Application number: PCT/CN2017/089524
Authority: WO
Inventors: 乔云飞
Original assignee: 华为技术有限公司
Priority date: 2016-07-07
Filing date: 2017-06-22
Publication date: 2018-01-11
Also published as: CN107592652A; CN107592652B

Abstract

Provided are a data transmission method and apparatus. The data transmission method comprises: a first user equipment acquiring a target orthogonal sequence corresponding to a pre-selected target uplink transmission resource; the first user equipment acquiring an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment of a plurality of second user equipments within a pre-set range; the first user equipment performing a correlation operation on the target orthogonal sequence and the orthogonal sequence corresponding to the uplink transmission resource pre-selected by each second user equipment of the plurality of second user equipments; and the first user equipment determining, according to a result of the correlation operation, whether to transmit uplink data on the target uplink transmission resource. By means of the embodiments of the present invention, the collision probability of resource selection within a pre-set range can be reduced.

Description

Data transmission method and device

Technical field

The present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.

Background technique

In recent years, researchers have proposed an uplink Grant-free transmission scheme for a series of problems caused by 5G massive user access. The so-called Grant Free refers to the need for network equipment dynamics in the Public Land Mobile Network (PLMN). The method for scheduling the uplink transmission of the user data, specifically, the user includes the code resource, the pilot resource, the modulation and coding scheme, and the time-frequency resource according to the service or the specified time-frequency resource. Feedback methods, diversity methods, etc., methods of data transmission (such as pilot and data transmission) to reduce network signaling and reduce transmission delay.

The Grant-free mechanism avoids delays and greatly reduces signaling overhead. It has good application value in the scenario of massive access. However, when a large number of user equipments access the uplink transmission resources, the situation of resource collision will seriously affect the system performance. Therefore, it is necessary to design a cooperation mechanism to reduce the probability of collision of uplink transmission resources selected by the user equipment.

Summary of the invention

The embodiment of the invention provides a data transmission method and device, which can reflect the resource selection situation of the user equipment by using an orthogonal sequence, and reduce the collision probability of resource selection in the preset range.

A first aspect of the embodiments of the present invention provides a data transmission method, including: acquiring, by a first user equipment, a target orthogonal sequence corresponding to a pre-selected target uplink transmission resource, where the obtaining manner is obtained by querying a resource mapping table defined by the system, The resource mapping table defines a one-to-one correspondence between the plurality of uplink transmission resources and the orthogonal sequence, and then the first user equipment acquires each second user equipment preselection among the plurality of second user equipments in the preset range. An orthogonal sequence corresponding to the uplink transmission resource, for example, a device to device (D2D) connection is established between the first user equipment and each second user equipment in the preset range, and the D2D connection is acquired through the D2D connection. The uplink difference U preselected by each of the second user equipments is the orthogonal sequence corresponding to the resources, and finally the first user equipment selects the target orthogonal sequence and the obtained plurality of second user equipments. Correlating the orthogonal sequence corresponding to the uplink transmission resource preselected by each second user equipment, and determining whether the target is in accordance with the operation result And downlink transmission resource for uplink data transmission, this approach can greatly reduce the probability of collision of uplink transmission resource selected by each user equipment within a predetermined range.

Based on the first aspect, in a first possible implementation manner of the first aspect, the uplink transmission resource and the orthogonal sequence are in one-to-one correspondence. Optionally, the uplink transmission resource may include a time domain, a frequency domain, and a code. This three-dimensional orthogonal resource.

According to the first aspect, in a second possible implementation manner of the first aspect, the first user equipment acquires an uplink transmission resource pre-selected by each second user equipment of the plurality of second user equipments in the preset range. The method for obtaining the corresponding orthogonal sequence may be that the first user equipment establishes a data connection with multiple second user equipments in a preset range of the cell, such as a D2D connection, and preset time-frequency resources based on the data connection. And acquiring, by the first user equipment, an orthogonal sequence corresponding to an uplink transmission resource preselected by each of the plurality of second user equipments.

Based on the second possible implementation manner of the first aspect, in the third feasible implementation manner of the first aspect, the multiple Each of the second user equipments maps the orthogonal sequence corresponding to the uplink transmission resource selected by the second user equipment to the preset time-frequency resource of the data connection, that is, each second user equipment is After the D2D connection with the first user equipment is established, the orthogonal sequence corresponding to the uplink transmission resource preselected by the second user equipment is sent on the preset time-frequency resource of the D2D connection.

Based on the first aspect, in a fourth possible implementation manner of the first aspect, the preset range may be a range that includes multiple collaboration group areas, where the first user equipment belongs to a target in the multiple collaboration group areas. a collaboration group area, where the first user equipment is an administrative user equipment in the target collaboration group area, and the multiple second user equipments include user equipments other than the first user equipment in the target cooperation area And all the user equipments in the collaboration area except the target cooperation area; the first user equipment pre-selects each of the plurality of second user equipments in the preset range The method for obtaining the orthogonal sequence corresponding to the uplink transmission resource may be that the first user equipment establishes a data connection with a user equipment in the target collaboration group area, such as a D2D connection, and is based on the data connection. Obtaining, by the preset time-frequency resource, an orthogonal sequence corresponding to the uplink transmission resource preselected by the user equipment in the target cooperation group area; Receiving, by the user equipment, the uplink transmission resources preselected by all user equipments in the cooperation group area uploaded by the management user equipment in each of the plurality of collaboration group areas that are forwarded by the base station Orthogonal sequence.

According to the fourth possible implementation manner of the first aspect, in the fifth possible implementation manner of the first aspect, the first user equipment also includes all user equipments in the target collaboration group area (including the first user equipment and the target The orthogonal sequence corresponding to the pre-selected uplink transmission resources is uploaded to the base station by other user equipments in the collaboration group area.

Based on the first aspect, in a sixth possible implementation manner of the first aspect, the determining, by the first user equipment, whether the target uplink transmission resource performs uplink data transmission according to the correlation operation result may be: If the result is less than the preset threshold, the first user equipment determines to perform uplink data transmission on the target uplink transmission resource.

A second aspect of the present invention provides a data transmission apparatus, which is applied to a first user equipment, including a first acquisition module, a second acquisition module, an operation module, and a determination module, wherein the first acquisition module is configured to obtain a pre-selection. The target orthogonal sequence corresponding to the target uplink transmission resource; the second obtaining module is configured to obtain orthogonality corresponding to the uplink transmission resource preselected by each second user equipment of the plurality of second user equipments in the preset range And an operation module, configured to perform correlation operation on the orthogonal sequence corresponding to the uplink transmission resource preselected by each second user equipment of the plurality of second user equipments; And determining, according to the result of the correlation operation, whether to perform uplink data transmission on the target uplink transmission resource.

A third aspect of the embodiments of the present invention provides a data transmission apparatus, which is applied to a first user equipment, where the data transmission apparatus includes a processor, a memory, and a network interface. The network interface includes a wireless interface. Optionally, the network interface may also include a wired interface. The first user equipment can be wiredly connected to other second user equipment through a wired interface, and can transmit and receive orthogonal sequences involved in the foregoing method with other second user equipment. The first user equipment can also be connected to other second user equipment through a wireless interface, and the other second user equipment can transmit and receive orthogonal sequences involved in the above method. The processor is configured to perform some or all of the processes of the first aspect.

A fourth aspect of the embodiments of the present invention provides a computer storage medium storing a program that performs some or all of the steps of the first aspect.

In the embodiment of the present invention, the first user equipment acquires a target orthogonal sequence corresponding to the pre-selected target uplink transmission resource, and acquires a pre-selected uplink of each of the plurality of second user equipments in the preset range. Transmission resource Corresponding orthogonal sequence, correlating the target orthogonal sequence with the obtained orthogonal sequence corresponding to the uplink resource selected by the second user equipment, and determining whether to transmit the resource in the target uplink according to the result of the operation Perform uplink data transmission. This method reflects the resource selection of the user equipment through the orthogonal sequence, and reduces the collision probability of resource selection in the preset range.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the background art, the drawings to be used in the embodiments of the present invention or the background art will be described below.

1 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

2 is a structural diagram of a network system according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another network system according to an embodiment of the present invention; FIG.

4 is a schematic diagram of an uplink transmission resource according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of an uplink transmission resource configuration according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram of D2D time-frequency resource mapping according to an embodiment of the present invention; FIG.

FIG. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;

FIG. 8 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present invention.

detailed description

The embodiments of the present invention are described below in conjunction with the accompanying drawings in the embodiments of the present invention.

1 is a schematic flowchart of a data transmission method according to an embodiment of the present invention. As shown in the figure, a data transmission method according to an embodiment of the present invention includes steps S100-S105;

S100: The first user equipment acquires a target orthogonal sequence corresponding to the pre-selected target uplink transmission resource.

In the embodiment of the present invention, the first user equipment is any user equipment in the cell covered by the base station, as long as the user equipment needs to detect whether the selected target uplink transmission resource conflicts with the uplink transmission resource selected by other user equipments in the cell, that is, The data transmission method provided by the embodiment of the present invention can be used for detection.

The uplink transmission resource may be a three-dimensional orthogonal resource including a time domain, a frequency domain, and a codebook. The current Grant-free scheme defines a Contention Transmission Unit (CTU) as a data bearing unit, and the user equipment according to certain criteria The data is mapped on the CTU resource block to complete the uplink data transmission; the base station side performs blind detection on the CTU resource to recover the carried user data.

As shown in FIG. 4, it is a schematic diagram of an uplink transmission resource according to an embodiment of the present invention. As shown in the figure, the uplink transmission resource is composed of a time domain (t), a frequency domain (f), and a codebook (c). The three-dimensional orthogonal resource includes a plurality of codebooks in one time-frequency resource block. One time-frequency resource block in FIG. 4 includes five codebooks, one of which corresponds to six pilots, and one user equipment can select one codebook. When one of the pilot devices is mapped to a time-frequency code resource, one pilot can be randomly selected from the plurality of pilots corresponding to the time-frequency code resource for uplink data transmission.

As shown in the right side of FIG. 4, a more general codebook resource mapping diagram is provided in the embodiment of the present invention. As shown in the figure, a time-frequency resource block includes J codebooks (C1, C2, C3, ..., CJ). ), one of the codebooks corresponds to L pilots.

The system defines a resource mapping table, where the table includes a correspondence between each uplink transmission resource and an orthogonal sequence, and an uplink transmission resource corresponds to an orthogonal sequence, that is, a one-to-one correspondence, when the first user equipment determines the pre-selected Head After the uplink transmission resource is marked, the table may be queried to obtain a target orthogonal sequence corresponding to the target uplink transmission resource, where the target uplink transmission resource includes a codebook identifier and a CTU sequence number.

As shown in FIG. 5, it is a schematic diagram of a resource mapping table according to an embodiment of the present invention. As shown in the figure, the left side is a time-frequency resource block (CTU) of an uplink transmission resource, as shown in the figure, each time-frequency The resource block size may be different. One time-frequency resource block may correspond to multiple codebooks CB, as shown on the right side of the figure, that is, a mapping table between the CTU and the codebook CB in the orthogonal sequence and the uplink transmission resource.

S101: The first user equipment acquires an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment of the plurality of second user equipments in the preset range;

In the embodiment of the present invention, the first user equipment further acquires an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment of the second user equipment in the preset range, where the preset range may include a cell. The coverage may be different due to the different coverage of the cell, and may also cause the first user equipment to acquire the orthogonal sequence of the other second user equipment.

Optionally, the acquiring, by the first user equipment, the orthogonal sequence corresponding to the uplink transmission resource preselected by each of the plurality of second user equipments in the preset range may have the following two options. Implementation method:

In the first optional implementation manner, the coverage of the cell is small, and the specific network system architecture diagram can be as shown in FIG. 2, and all user equipments in the coverage of the cell can perform information resource application information interaction through the D2D connection. The method for the first user equipment to acquire the orthogonal sequence of the second user equipment may include the following two steps:

Step 1: The first user equipment establishes a data connection with multiple second user equipments in a cell preset range;

Specifically, the second user equipment is a user equipment in the cell except the first user equipment, and the user equipment is pre-applied for the uplink transmission resource, and the second user equipment applies for the uplink transmission resource according to the service requirement, and is in the sequence group defined by the system. Select the corresponding orthogonal sequence.

The first user equipment establishes a data connection with multiple second user equipments within a preset range of the cell, which may be a D2D connection, and all user equipments (including the first user equipment and the second user equipment) monitor the selected sequence. The first time slot of the cycle is mapped on the preset D2D time-frequency resource.

Step 2: Based on the preset time-frequency resource of the data connection, the first user equipment acquires an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment of the multiple second user equipments.

Specifically, all user equipments map their own orthogonal sequences to the D2D preset time-frequency resources, as shown in FIG. 6, which is a preset time-frequency of the D2D data connection provided by the embodiment of the present invention. As shown in the figure, the CTU and the codebook CB of the uplink transmission resources of all user equipments are mapped to the preset time-frequency resources of the D2D connection, so all user equipments can obtain other based on the preset time-frequency resources. The orthogonal sequence of the user equipment.

In the embodiment of the present invention, the first user equipment may acquire, according to the preset time-frequency resource of the data connection, an orthogonal sequence corresponding to the uplink transmission resource pre-selected by each second user equipment of the plurality of second user equipments.

In the second optional implementation manner, when the cell coverage is large, and the interaction of the orthogonal information of the entire area cannot be satisfied, the user in the cell divides the cooperation group by the area, and the management user equipment (Master UE) The resource application status in the collaboration group is interacted with the remaining collaboration groups in the cell by the base station, thereby implementing resource application interaction of the user collaboration in a wider scope. The specific network architecture diagram is shown in Figure 3. The user equipment in the cell is divided into two collaboration group areas. Each collaboration group area includes a Master UE, as shown in Figure 3, the color is the darkest in a collaboration group area. The user equipment is the master UE. In the embodiment of the present invention, the first user equipment is used as the master UE. For example, the first user equipment is the master UE, which does not constitute a limitation of the present invention. The first user equipment may also be used. It is not a Master UE, and the present invention is not limited. A D2D connection is established between user equipments in each collaboration group area.

The obtaining, by the first user equipment, the acquiring manner of the orthogonal sequence corresponding to the uplink transmission resource pre-selected by the second device includes the following two steps:

Step 1: The first user equipment establishes a data connection with the user equipment in the target collaboration group area, and acquires the foregoing in the target collaboration group area based on the preset time-frequency resource of the data connection. An orthogonal sequence corresponding to the uplink transmission resource preselected by the user equipment;

Optionally, the first user equipment establishes a D2D connection with the user equipment in the target collaboration group area, and obtains the uplink transmission preselected by all user equipments in the collaboration group area according to the preset time-frequency resource of the D2D connection. The orthogonal sequence corresponding to the resource.

It should be noted that, after the first user equipment establishes a D2D connection with the user equipment in the target cooperative group area, all user equipments map their own orthogonal sequence to the D2D in the first time slot of the listening period. The connected time-frequency resources are connected, so all user equipments in the target cooperative group area can obtain orthogonal sequences mapped by other user equipments based on the preset time-frequency resources of the D2D connection.

Step 2: The first user equipment receives, among the plurality of collaboration group areas, the pre-selection of all user equipments in the collaboration group area uploaded by the management user equipment in each of the plurality of collaboration group areas that are forwarded by the base station The orthogonal sequence corresponding to the uplink transmission resource.

Specifically, when the first user equipment needs to acquire an orthogonal sequence of user equipments in other cooperative group areas, the first user equipment establishes a data connection with the base station, and receives other coordinated group areas that are forwarded from the base station. The orthogonal sequence of each user equipment in the collaboration group area uploaded by the user equipment is managed.

It should be noted that each collaboration group area includes a management user equipment, and the orthogonal sequence interaction manner in each collaboration group area interacts with the orthogonal sequence in the target collaboration group area, that is, a collaboration group area. The user equipments in each of the user equipments perform orthogonal sequence interaction through the D2D connection, so each user equipment can obtain an orthogonal sequence of all user equipments in the cooperation group area. At the same time, the management user equipment in each collaboration group area sends the orthogonal sequence of all user equipments in the cooperation group area to the base station, and the base station forwards the information to other cooperation group areas, so that the user equipments in other cooperation group areas can be obtained. The orthogonal sequence of user equipment within the collaborative group area is known.

Further, the first user equipment uploads an orthogonal sequence corresponding to the uplink transmission resources preselected by all user equipments in the target cooperation area to the base station, where the base station may be used by each user in the target collaboration group area. The orthogonal sequence of devices is forwarded to other cooperating group regions within the cell.

S102: The first user equipment performs a correlation operation on the orthogonal sequence corresponding to the uplink transmission resource preselected by each second user equipment in the target orthogonal sequence.

In the embodiment of the present invention, all user equipments obtain orthogonal sequences of other user equipments, and correlate the sequence corresponding to the pre-selected uplink transmission resources with the orthogonal sequence of all other user equipments in the second time slot of the listening period. Operation. For example, when a coordinated group area is included in a cell, the user equipment associates its own orthogonal sequence with an orthogonal sequence carried on a preset D2D time-frequency resource. When a plurality of cooperating group regions are included in the cell, the user equipment associates its own orthogonal sequence with an orthogonal sequence carried on the preset D2D time-frequency resource and an orthogonal sequence in other cooperating group regions obtained from the base station. .

S103. The first user equipment determines, according to a result of the correlation operation, whether to perform uplink data transmission on the target uplink transmission resource.

In the embodiment of the present invention, if the result of the correlation operation is non-zero, it is determined that another user equipment has applied for the same uplink transmission resource, and if the result is zero, it is determined that the uplink transmission resource is idle, that is, no other user equipment occupies the uplink. Transfer resources.

Specifically, the first user equipment determines, according to the result of the correlation operation, whether to perform uplink data transmission on the target uplink transmission resource, including:

If the result of the correlation operation is less than a preset threshold, the first user equipment determines to perform uplink data transmission on the target uplink transmission resource.

In the embodiment of the present invention, the uplink transmission resource is a time domain, a frequency domain, and a codebook three-dimensional orthogonal resource. Even if the result of the correlation operation is non-zero, that is, other user equipments have applied for the same uplink transmission resource, and cannot be determined. The uplink data transmission cannot be performed on the target uplink transmission resource. As shown in FIG. 4, the same time domain, frequency domain, and codebook may include 6 pilot signals, that is, uplink data transmission capable of carrying 6 user equipments. In the embodiment of the present invention, the budget threshold may be set according to the actual probability collision situation. If the result of the correlation operation is less than the preset threshold, the first user equipment determines that the uplink data transmission may be performed on the target uplink transmission resource (that is, the same pilot signal is selected. If the result of the correlation operation is smaller than the preset threshold, the first user equipment may not perform uplink data transmission on the target uplink transmission resource (that is, the probability of selecting the same pilot signal is relatively large).

It should be noted that if the first user equipment cannot perform uplink data transmission on the target uplink transmission resource, the resource selection is resumed in the next listening period.

In the embodiment of the present invention, the first user equipment acquires a target orthogonal sequence corresponding to the pre-selected target uplink transmission resource, and acquires a pre-selected uplink of each of the plurality of second user equipments in the preset range. Orthogonal sequence corresponding to the transmission resource, performing correlation calculation on the orthogonal sequence corresponding to the acquired uplink transmission resources preselected by the plurality of second user equipments, and determining whether the target is in the target according to the result of the operation The uplink transmission resource performs uplink data transmission. This method reflects the resource selection of the user equipment by using the orthogonal sequence, and reduces the collision probability of resource selection in the preset range.

FIG. 7 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present disclosure, which is applied to a first user equipment, where the first user equipment is any user equipment in a cell covered by the base station, as long as the user equipment needs to be detected by the user equipment. If the selected target uplink transmission resource conflicts with the uplink transmission resource selected by other user equipments in the cell, the data transmission method provided by the embodiment of the present invention may be used for detection.

As shown in the figure, the data transmission apparatus of the embodiment of the present invention includes a first acquisition module 100, a second acquisition module 101, an operation module 102, and a determination module 103;

The first obtaining module 100 is configured to acquire a target orthogonal sequence corresponding to the pre-selected target uplink transmission resource;

The second obtaining module 101 is configured to acquire an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment of the plurality of second user equipments in the preset range;

The operation module 102 is configured to perform a correlation operation on the orthogonal sequence corresponding to the uplink transmission resource preselected by each second user equipment of the multiple second user equipments;

a determining module 103, configured to determine, according to a result of the correlation operation, whether to transmit resources in the target uplink Line uplink data transmission.

Optionally, the uplink transmission resource has a one-to-one correspondence with the orthogonal sequence;

The uplink transmission resource includes a time domain, a frequency domain, and a codebook three-dimensional orthogonal resource.

As an optional implementation manner, the acquiring, by the second obtaining module 101, the orthogonal sequence corresponding to the uplink transmission resource pre-selected by each of the plurality of second user equipments in the preset range includes:

Establishing a data connection with a plurality of second user equipments within a preset range of the cell;

And acquiring, according to the preset time-frequency resource of the data connection, an orthogonal sequence corresponding to the uplink transmission resource pre-selected by each of the plurality of second user equipments.

Optionally, each of the plurality of second user equipments maps an orthogonal sequence corresponding to the uplink transmission resource selected by the second user equipment to the preset time-frequency resource of the data connection. on.

As another optional implementation manner, the preset range includes multiple collaboration group areas in a cell, the first user equipment belongs to a target cooperation group area in the multiple collaboration group areas, and the a user equipment is an administrative user equipment in the target collaboration group area, where the multiple second user equipments include user equipments other than the first user equipment and the multiple collaboration areas in the target cooperation area. All the user equipments in the collaboration area except the target collaboration area; the second acquisition module 101 acquires, corresponding to the uplink transmission resources preselected by each second user equipment of the plurality of second user equipments in the preset range. The orthogonal sequence specifically includes:

Establishing a data connection with the user equipment in the target collaboration group area, and acquiring, according to the preset time-frequency resource of the data connection, the uplink transmission resource pre-selected by the user equipment in the target collaboration group area Corresponding orthogonal sequence;

Orthogonal to the uplink transmission resource preselected by all user equipments in the collaboration group area uploaded by the user equipment in the collaboration group area except the target cooperation group area in the plurality of collaboration group areas that are forwarded by the base station sequence.

Optionally, the data transmission apparatus of the embodiment of the present invention further includes an uploading module;

The uploading module is configured to upload an orthogonal sequence corresponding to the uplink transmission resources preselected by all user equipments in the target cooperation area to the base station.

Specifically, the determining module 103 determines, according to the result of the correlation operation, whether to perform uplink data transmission on the target uplink transmission resource, specifically:

Please refer to FIG. 8. FIG. 8 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention. Applicable to the first user equipment, where the first user equipment is any user equipment in the cell covered by the base station, as long as the user equipment needs to be checked. The data transmission method provided by the embodiment of the present invention may be detected by detecting whether the selected target uplink transmission resource conflicts with the uplink transmission resource selected by other user equipments in the cell. As shown in FIG. 8, the data transmission device includes a processor 41, a memory 42, and a network interface 43. The processor 41 is coupled to a memory 42 and a network interface 43, for example, the processor 41 can be coupled to the memory 42 and the network interface 43 via a bus.

The processor 41 can be a central processing unit (CPU), a network processor (in English: network processor, NP), a hardware chip, or any combination thereof. The hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof. The above PLD can be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), and a general array logic (GAL). Or any combination thereof.

The memory 42 is operative to store the received orthogonal sequence of the second user equipment and the target orthogonal sequence of the first user equipment, and the like. The memory 42 may include a volatile memory (English: volatile memory), such as a random access memory (RAM); the memory 42 may also include a non-volatile memory (English: non-volatile memory). For example, read-only memory (English: read-only memory, ROM), flash memory (English: flash memory), hard disk (English: hard disk drive, abbreviation: HDD) or solid state drive (English: solid-state drive, SSD) The memory 42 may also include a combination of the above types of memories.

Network interface 43 may include a wired network interface or a wireless network interface. The first user equipment can communicate with the second user equipment through the network interface 43 while the first user equipment can communicate with the base station via the network interface 43.

The processor 41 can perform the following operations:

Acquiring a target orthogonal sequence corresponding to the pre-selected target uplink transmission resource; acquiring, by using the network interface 43, orthogonality corresponding to the uplink transmission resource preselected by each second user equipment of the plurality of second user equipments in the preset range The first user equipment performs a correlation operation on the orthogonal sequence corresponding to the uplink transmission resource preselected by each second user equipment of the plurality of second user equipments; A user equipment determines whether to perform uplink data transmission on the target uplink transmission resource according to the result of the correlation operation.

Further, the uplink transmission resource has a one-to-one correspondence with the orthogonal sequence;

Further, the processor 41 may further establish a data connection with a plurality of second user equipments within a preset range of the cell; and the first user equipment acquires the location according to the preset time-frequency resource of the data connection. An orthogonal sequence corresponding to an uplink transmission resource preselected by each of the plurality of second user equipments.

Each of the plurality of second user equipments maps an orthogonal sequence corresponding to the uplink transmission resource selected by the second user equipment to the preset time-frequency resource of the data connection.

Further, the preset range includes a plurality of collaboration group areas in the cell, the first user equipment belongs to a target collaboration group area of the multiple collaboration group areas, and the first user equipment is the target a user equipment in the collaboration group area, where the plurality of second user equipments include user equipments other than the first user equipment in the target collaboration area and the plurality of collaboration areas except the target cooperation area All user equipment within the collaboration area;

The processor 41 may also establish a data connection with the user equipment in the target collaboration group area, and acquire the user equipment in the target collaboration group area based on the preset time-frequency resource of the data connection. And an orthogonal sequence corresponding to the pre-selected uplink transmission resource; and receiving, by the base station, the target cooperation group The orthogonal sequence corresponding to the uplink transmission resources preselected by all user equipments in the collaboration group area uploaded by the user equipment is managed in each collaboration group area outside the area.

Further, the processor 41 may further upload an orthogonal sequence corresponding to uplink transmission resources preselected by all user equipments in the target cooperation area to the base station.

Further, the processor 41 may further determine that the target uplink transmission resource performs uplink data transmission if the result of the correlation operation is less than a preset threshold.

One of ordinary skill in the art can understand all or part of the process of implementing the above embodiments, which can be completed by a computer program to instruct related hardware, the program can be stored in a computer readable storage medium, when the program is executed The flow of the method embodiments as described above may be included. The foregoing storage medium includes various media that can store program codes, such as a ROM or a random access memory RAM, a magnetic disk, or an optical disk.

Claims

A data transmission method, comprising:

Obtaining, by the first user equipment, a target orthogonal sequence corresponding to the pre-selected target uplink transmission resource;

Obtaining, by the first user equipment, an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment of the plurality of second user equipments in the preset range;

The first user equipment performs a correlation operation on the orthogonal sequence corresponding to the uplink transmission resource preselected by each of the plurality of second user equipments by the target orthogonal sequence;

The first user equipment determines, according to the result of the correlation operation, whether to perform uplink data transmission on the target uplink transmission resource.
The method according to claim 1, wherein the uplink transmission resource has a one-to-one correspondence with the orthogonal sequence;

The uplink transmission resource includes a time domain, a frequency domain, and a codebook three-dimensional orthogonal resource.
The method according to claim 1, wherein the first user equipment acquires an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment of the plurality of second user equipments in the preset range. ,include:

The first user equipment establishes a data connection with multiple second user equipments within a preset range of the cell;

And the first user equipment acquires an orthogonal sequence corresponding to the uplink transmission resource preselected by each of the plurality of second user equipments, based on the preset time-frequency resource of the data connection.
The method according to claim 3, wherein each of the plurality of second user equipments maps an orthogonal sequence corresponding to the uplink transmission resource selected by the second user equipment to the data Connected to the preset time-frequency resource.
The method according to claim 1, wherein the preset range includes a plurality of collaboration group regions in a cell, the first user equipment belongs to a target collaboration group region of the plurality of collaboration group regions, and The first user equipment is a management user equipment in the target collaboration group area, and the multiple second user equipments include user equipments other than the first user equipment in the target cooperation area, and the multiple All user equipments in the collaboration area except the target collaboration area in the collaboration area;

And the first user equipment acquires an orthogonal sequence corresponding to the uplink transmission resource preselected by each of the plurality of second user equipments in the preset range, including:

The first user equipment establishes a data connection with the user equipment in the target collaboration group area, and acquires the user equipment in the target cooperation group area based on the preset time-frequency resource of the data connection. An orthogonal sequence corresponding to the selected uplink transmission resource;

Receiving, by the first user equipment, the uplink transmission preselected by all user equipments in the collaboration group area uploaded by the management user equipment in each of the plurality of collaboration group areas that are forwarded by the base station and sent by the base station The orthogonal sequence corresponding to the resource.
The method of claim 5, wherein the method further comprises:

And transmitting, by the first user equipment, an orthogonal sequence corresponding to uplink transmission resources preselected by all user equipments in the target cooperation area to the base station.
The method of claim 1, wherein the first user equipment determines whether to perform uplink data transmission on the target uplink transmission resource according to the result of the correlation operation, including:

If the result of the correlation operation is less than a preset threshold, the first user equipment determines to perform uplink data transmission on the target uplink transmission resource.
A data transmission device is applied to a first user equipment, and includes:

a first acquiring module, configured to acquire a target orthogonal sequence corresponding to the pre-selected target uplink transmission resource;

a second acquiring module, configured to acquire an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment of the plurality of second user equipments in the preset range;

An operation module, configured to perform a correlation operation on the orthogonal sequence corresponding to the uplink transmission resource preselected by each second user equipment of the multiple second user equipments;

And a determining module, configured to determine, according to a result of the correlation operation, whether to perform uplink data transmission on the target uplink transmission resource.
The apparatus according to claim 8, wherein the uplink transmission resource has a one-to-one correspondence with the orthogonal sequence;

The uplink transmission resource includes a time domain, a frequency domain, and a codebook three-dimensional orthogonal resource.
The apparatus according to claim 8, wherein the second obtaining module acquires an orthogonal sequence corresponding to an uplink transmission resource preselected by each of the plurality of second user equipments in the preset range Specifically include:

Establishing a data connection with a plurality of second user equipments within a preset range of the cell;

And acquiring, according to the preset time-frequency resource of the data connection, an orthogonal sequence corresponding to the uplink transmission resource pre-selected by each of the plurality of second user equipments.
The apparatus according to claim 10, wherein each of the plurality of second user equipments maps an orthogonal sequence corresponding to the uplink transmission resource selected by the second user equipment to the data Connected to the preset time-frequency resource.
The device according to claim 8, wherein the preset range includes a plurality of collaboration group regions in a cell, the first user equipment belongs to a target collaboration group region of the plurality of collaboration group regions, and The first user equipment is a management user equipment in the target collaboration group area, and the multiple second user equipments include user equipments other than the first user equipment in the target cooperation area, and the multiple All user equipments in the collaboration area except the target collaboration area in the collaboration area; the second acquisition module acquires multiple second user equipments in the preset range The orthogonal sequence corresponding to the uplink transmission resource pre-selected by each second user equipment specifically includes:

Establishing a data connection with the user equipment in the target collaboration group area, and acquiring, according to the preset time-frequency resource of the data connection, the uplink transmission resource pre-selected by the user equipment in the target collaboration group area Corresponding orthogonal sequence;

Orthogonal to the uplink transmission resource preselected by all user equipments in the collaboration group area uploaded by the user equipment in the collaboration group area except the target cooperation group area in the plurality of collaboration group areas that are forwarded by the base station sequence.
The device of claim 12, wherein the device further comprises:

The uploading module is configured to upload an orthogonal sequence corresponding to the uplink transmission resources preselected by all user equipments in the target cooperation area to the base station.
The apparatus according to claim 8, wherein the determining module determines whether to perform uplink data transmission on the target uplink transmission resource according to the result of the correlation operation, specifically:

If the result of the correlation operation is less than a preset threshold, the first user equipment determines to perform uplink data transmission on the target uplink transmission resource.