CN107592652B - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
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- CN107592652B CN107592652B CN201610539659.3A CN201610539659A CN107592652B CN 107592652 B CN107592652 B CN 107592652B CN 201610539659 A CN201610539659 A CN 201610539659A CN 107592652 B CN107592652 B CN 107592652B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W28/00—Network traffic management; Network resource management
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Abstract
The embodiment of the invention provides a data transmission method and a device, wherein the data transmission method comprises the following steps: the first user equipment acquires a target orthogonal sequence corresponding to a preselected target uplink transmission resource; the first user equipment acquires an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in a plurality of second user equipments within a preset range; the first user equipment performs correlation operation on the target orthogonal sequence and an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipments; and the first user equipment determines whether to transmit uplink data on the target uplink transmission resource or not according to the result of the correlation operation. By the embodiment of the invention, the collision probability of resource selection in the preset range can be reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a data transmission method and apparatus.
Background
In recent years, researchers have proposed an uplink Grant-Free transmission scheme for a series of problems caused by 5G massive user access, where Grant Free is a method for implementing uplink transmission of user data without dynamic scheduling of Network devices in a Public Land Mobile Network (PLMN), and specifically, refers to a method for reducing Network signaling and reducing transmission delay by using a data transmission mode (for example, pilot and data are transmitted together) supported by a time-frequency resource(s) according to different services or on a specified time-frequency resource(s) by a user, the data transmission mode includes a code resource, a pilot resource, a modulation coding scheme, a feedback type, a diversity mode, and the like.
The Grant-free mechanism avoids time delay, greatly reduces signaling overhead, and has good application value in the scene of mass access. However, when a large number of ues access and select uplink transmission resources, the resource collision will seriously affect the system performance, so it is necessary to design a cooperation mechanism to reduce the probability of collision of the uplink transmission resources selected by the ues.
Disclosure of Invention
Embodiments of the present invention provide a data transmission method and apparatus, which can reflect a resource selection condition of a user equipment through an orthogonal sequence, and reduce a collision probability of resource selection within a preset range.
A first aspect of the present invention provides a data transmission method, including: a first user equipment obtains a target orthogonal sequence corresponding to a pre-selected target uplink transmission resource, where the obtaining manner may be obtained by querying a resource mapping table defined by a system, where the resource mapping table defines a one-to-one correspondence relationship between a plurality of uplink transmission resources and an orthogonal sequence, and then the first user equipment obtains an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of a plurality of second user equipments within a preset range, for example, a Device-to-Device (D2D) connection is established between the first user equipment and each of the second user equipments within the preset range, and an uplink difference U pre-selected by each of the second user equipments in the plurality of second user equipments is obtained through the D2D connection, and finally the first user equipment obtains the target orthogonal sequence and the obtained orthogonal sequence corresponding to the uplink transmission resource pre-selected by each of the second user equipments in the plurality of second user equipments And performing row correlation operation, and determining whether to perform uplink data transmission on the target uplink transmission resource according to an operation result, wherein the mode can greatly reduce the collision probability of the uplink transmission resource selected by each user equipment in a preset range.
Based on the first aspect, in a first possible implementation manner of the first aspect, the uplink transmission resources and the orthogonal sequences have a one-to-one correspondence, and optionally, the uplink transmission resources may include time-domain, frequency-domain, and codebook three-dimensional orthogonal resources.
Based on the first aspect, in a second possible implementation manner of the first aspect, the obtaining, by the first user equipment, an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of a plurality of second user equipments within a preset range may be that the first user equipment establishes a data connection, such as D2D, with the plurality of second user equipments within the preset range of a cell, and based on a preset time-frequency resource of the data connection, the first user equipment obtains the orthogonal sequence corresponding to the uplink transmission resource pre-selected by each of the plurality of second user equipments.
Based on the second feasible implementation manner of the first aspect, in a third feasible implementation manner of the first aspect, each of the second user equipments maps the orthogonal sequence corresponding to the uplink transmission resource selected by the second user equipment to a preset time-frequency resource of a data connection, that is, after the D2D connection between each of the second user equipments and the first user equipment is established, the orthogonal sequence corresponding to the uplink transmission resource pre-selected 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 including multiple cooperation group areas, where the first user equipment belongs to a target cooperation group area of the multiple cooperation group areas, and the first user equipment is a management user equipment in the target cooperation group area, and the multiple second user equipments include user equipments in the target cooperation area except the first user equipment and all user equipments in a cooperation area in the multiple cooperation areas except the target cooperation area; the obtaining manner of the orthogonal sequence corresponding to the uplink transmission resource pre-selected by the first user equipment in the multiple second user equipments within the preset range may be that the first user equipment establishes a data connection, such as a D2D connection, with the user equipment in the target cooperation group region, and obtains the orthogonal sequence corresponding to the uplink transmission resource pre-selected by the user equipment in the target cooperation group region based on a preset time-frequency resource of the data connection; and meanwhile, the first user equipment receives orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipment in the cooperative group region, uploaded by the user equipment in each cooperative group region except the target cooperative group region in the plurality of cooperative group regions forwarded by the base station.
Based on the fourth possible implementation manner of the first aspect, in a fifth possible implementation manner of the first aspect, the first user equipment may also upload, to the base station, orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipments (including the first user equipment and other user equipments in the target cooperation group area) in the target cooperation group area.
Based on the first aspect, in a sixth possible implementation manner of the first aspect, the first user equipment determines, according to the correlation operation result, whether to perform uplink data transmission on the target uplink transmission resource in a manner that the first user equipment determines to perform uplink data transmission on the target uplink transmission resource if the correlation operation result is smaller than a preset threshold.
A second aspect of the present invention provides a data transmission apparatus, which is applied to a first user equipment, and includes a first obtaining module, a second obtaining module, a computing module, and a determining module, where the first obtaining module is configured to obtain a target orthogonal sequence corresponding to a preselected target uplink transmission resource; the second obtaining module is used for obtaining an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in a plurality of second user equipments within a preset range; the operation module is used for carrying out correlation operation on the target orthogonal sequence and an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipments; and the determining module is used for determining whether to transmit uplink data on the target uplink transmission resource according to the result of the correlation operation.
A third aspect of the present invention provides a data transmission apparatus, applied to a first user equipment, including 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 in wired connection with other second user equipment through a wired interface, and transceives the orthogonal sequences involved in the method with other second user equipment. The first user equipment can also be connected with other second user equipment through a wireless interface, and transceives the orthogonal sequences involved in the above method with other second user equipment. The processor is configured to perform part or all of the procedures of the first aspect.
A fourth aspect 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 invention, a first user equipment acquires a target orthogonal sequence corresponding to a preselected target uplink transmission resource, acquires an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment in a plurality of second user equipments within a preset range, performs correlation operation on the target orthogonal sequence and the acquired orthogonal sequence corresponding to the uplink transmission resource preselected by the plurality of second user equipments, and determines whether uplink data transmission is performed on the target uplink transmission resource according to the operation result, so that the resource selection condition of the user equipment is reflected by the orthogonal sequence, and the collision probability of resource selection within the preset range is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present invention;
fig. 2 is a diagram of a network system architecture provided by an embodiment of the present invention;
FIG. 3 is a diagram of another network system architecture provided by 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 invention;
fig. 6 is a schematic diagram of D2D time-frequency resource mapping according to an embodiment of the present invention;
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 technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a data transmission method according to an embodiment of the present invention, where the data transmission method according to the embodiment of the present invention includes steps S100 to S105;
s100, a first user equipment acquires a target orthogonal sequence corresponding to a preselected 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, and as long as the user equipment needs to detect whether the selected target uplink transmission resource conflicts with the uplink transmission resources selected by other user equipments in the cell, the data transmission method provided in 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, a frame transmission unit (CTU) is defined as a data carrying unit in the current Grant-free scheme, and the user equipment maps data on a CTU resource block according to a certain criterion to complete uplink data transmission; and the base station side performs blind detection on the CTU resources to recover the loaded user data.
As shown in fig. 4, which is a schematic diagram of an uplink transmission resource provided in an embodiment of the present invention, as shown in the figure, the uplink transmission resource is a three-dimensional orthogonal resource composed of a time domain (t), a frequency domain (f), and a codebook (c), where one time-frequency resource block includes multiple codebooks, and one time-frequency resource block in fig. 4 includes five codebooks, where one codebook corresponds to six pilots, and one user equipment may select one pilot in one codebook, and when the user equipment is mapped to one time-frequency code resource, one pilot may be randomly selected from the multiple pilots corresponding to the time-frequency code resource to perform uplink data transmission.
As shown in the right side of fig. 4, for a more general codebook resource mapping provided by the embodiment of the present invention, as shown in the figure, a time-frequency resource block includes J codebooks (C1, C2, C3 … … CJ), where one codebook corresponds to L pilots.
The system defines a resource mapping table, the table includes the corresponding relation between each uplink transmission resource and the orthogonal sequence, one uplink transmission resource corresponds to one orthogonal sequence, namely, one-to-one correspondence, when the first user equipment determines the pre-selected target uplink transmission resource, the table can be inquired to obtain the target orthogonal sequence corresponding to the target uplink transmission resource, and the target uplink transmission resource includes the codebook identification and the CTU serial number.
As shown in fig. 5, which is a schematic diagram of a resource mapping table provided in the 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, the sizes of the time-frequency resource blocks may be different, and one time-frequency resource block may correspond to a plurality of codebooks CB, as shown in the right side of the figure, that is, a mapping table between an orthogonal sequence and CTU and codebooks CB in the uplink transmission resource.
S101, the first user equipment acquires an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in a plurality of second user equipment within a preset range;
in the embodiment of the present invention, the first user equipment further obtains an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of a plurality of second user equipments within a preset range, where the preset range may include a cell coverage range, and due to different sizes of the cell coverage ranges, the first user equipment may obtain orthogonal sequences of other second user equipments in different manners.
Optionally, the following two optional embodiments may be adopted as the manner for the first user equipment to obtain the orthogonal sequence corresponding to the uplink transmission resource pre-selected by each of the plurality of second user equipments within the preset range:
in a first alternative implementation, the coverage area of the cell is small, and a specific network system architecture diagram may be as shown in fig. 2, all the user equipments within the coverage area of the cell may perform information resource application information interaction through a D2D connection, and the method for the first user equipment to acquire the orthogonal sequence of the second user equipment may include the following two steps:
step one, the first user equipment establishes data connection with a plurality of second user equipment within a preset range of a cell;
specifically, optionally, the second user equipment is user equipment which is in a cell except the first user equipment and applies for the uplink transmission resource in advance, and the second user equipment applies for the uplink transmission resource according to a service requirement of the second user equipment and selects a corresponding orthogonal sequence from a sequence group defined by the system.
The first user equipment establishes a data connection, which may be a D2D connection, with a plurality of second user equipments within a preset range of the cell, and all the user equipments (including the first user equipment and the second user equipments) map the selected sequence on a preset D2D time-frequency resource in a first time slot of the listening period.
And secondly, based on the preset time frequency resource of the data connection, the first user equipment acquires an orthogonal sequence corresponding to the uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipment.
Specifically, optionally, all the user equipments map their own orthogonal sequences to the preset time-frequency resources of D2D, as shown in fig. 6, that is, the preset time-frequency resource map for D2D data connection provided in the embodiment of the present invention, as shown in the figure, CTUs and codebooks CB in the uplink transmission resources of all the user equipments are mapped to the preset time-frequency resources connected to D2D, so that all the user equipments can obtain the orthogonal sequences of other user equipments based on the preset time-frequency resources.
In the embodiment of the present invention, the first ue may obtain, based on the preset time-frequency resource of the data connection, an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of the second ues in the other multiple second ues.
In a second optional implementation manner, when the coverage of a cell is large and the interaction of the orthogonal sequence information in the whole area cannot be satisfied, in this embodiment, a plurality of cooperation groups are divided by areas for users in the cell, and a management user equipment (Master UE) interacts a resource application state in the cooperation group with other cooperation groups in the cell through a base station, so that resource application interaction of user cooperation in a larger range is realized. Specific network architecture diagram as shown in fig. 3, the ues in the cell are divided into two cooperative group regions. Each cooperative group area includes a Master UE, as shown in fig. 3, a user equipment with a deepest color in one cooperative group area is a Master UE, which is exemplified by taking a first user equipment as the Master UE in the embodiment of the present invention, although the first user equipment is not limited to the present invention, the first user equipment may not be the Master UE, and the present invention is not limited thereto. D2D connections are established between user devices within the respective collaboration group areas.
The method for acquiring the orthogonal sequence corresponding to the uplink transmission resource pre-selected by the second equipment by the first user equipment comprises the following two steps:
step one, the first user equipment establishes data connection with user equipment in the target cooperation group area, and acquires an orthogonal sequence corresponding to uplink transmission resources pre-selected by the user equipment in the target cooperation group area based on preset time-frequency resources of the data connection;
specifically, optionally, the first user equipment establishes a D2D connection with the user equipment in the target cooperative group region, and acquires orthogonal sequences corresponding to uplink transmission resources pre-selected by all the user equipment in the cooperative group region based on the preset time-frequency resources connected by the D2D.
It should be noted that, after the first ue establishes the D2D connection with the ues in the target cooperative group region, all the ues map their own orthogonal sequences to the preset time-frequency resources connected to the D2D in the first time slot of the listening period, so that all the ues in the target cooperative group region can obtain the orthogonal sequences mapped by other ues based on the preset time-frequency resources connected to the D2D.
And step two, the first user equipment receives orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipment in the cooperative group area, uploaded by the user equipment in each cooperative group area except the target cooperative group area in the plurality of cooperative group areas forwarded by the base station.
Specifically, optionally, when the first user equipment needs to acquire the orthogonal sequence of the user equipment in the other cooperation group area, the first user equipment establishes a data connection with the base station, and receives, from the base station, the orthogonal sequence of each user equipment in the cooperation group area uploaded by the managed user equipment in the other cooperation group area and forwarded by the base station.
It should be noted that each collaboration group area includes a management user equipment, and an orthogonal sequence interaction manner in each collaboration group area is an interaction manner of an orthogonal sequence in a target collaboration group area, that is, orthogonal sequence interaction is performed between user equipments in a collaboration group area through D2D connection, so that each user equipment can obtain orthogonal sequences of all user equipments in the collaboration group area. Meanwhile, the management user equipment in each cooperation group region sends the orthogonal sequences of all the user equipment in the cooperation group region to the base station, and the base station forwards the orthogonal sequences to other cooperation group regions, so that the user equipment in other cooperation group regions can know the orthogonal sequences of the user equipment in the cooperation group region.
Further optionally, the first user equipment uploads orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipment in the target cooperation group area to the base station, and the base station may forward the orthogonal sequences of each user equipment in the target cooperation group area to other cooperation group areas in the cell.
S102, the first user equipment performs correlation operation on the target orthogonal sequence and an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipment;
in the embodiment of the invention, all the user equipment acquire the orthogonal sequences of other user equipment, and the sequence corresponding to the uplink transmission resource pre-selected by the user equipment and the orthogonal sequences of all the other user equipment are subjected to correlation operation in the second time slot of the monitoring period. For example, when a cell includes a cooperative group region, the ue performs correlation operation on its orthogonal sequence and an orthogonal sequence carried on a preset D2D time-frequency resource. When the cell includes multiple cooperative group areas, the ue performs correlation operation on its orthogonal sequence, the orthogonal sequence carried on the preset D2D time-frequency resource, and the orthogonal sequence in another cooperative group area obtained from the base station.
S103, the first user equipment determines whether to transmit uplink data in the target uplink transmission resource according to the result of the correlation operation.
In the embodiment of the invention, if the result of the correlation operation is nonzero, the uplink transmission resource is judged to be idle by other user equipment, namely no other user equipment occupies the uplink transmission resource.
Specifically, optionally, the determining, by the first user equipment, whether to perform uplink data transmission on the target uplink transmission resource according to the result of the correlation operation includes:
and if the result of the correlation operation is smaller than a preset threshold value, 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, frequency domain, codebook three-dimensional orthogonal resource, and even if the result of the correlation operation is nonzero, that is, the same uplink transmission resource is applied by other existing user equipment, it cannot be determined that 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, may carry uplink data transmission of 6 user equipment ).
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 continuously re-initiated in the next listening period.
In the embodiment of the invention, a first user equipment acquires a target orthogonal sequence corresponding to a preselected target uplink transmission resource, acquires an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment in a plurality of second user equipments within a preset range, performs correlation operation on the target orthogonal sequence and the acquired orthogonal sequence corresponding to the uplink transmission resource preselected by the plurality of second user equipments, and determines whether uplink data transmission is performed on the target uplink transmission resource according to the operation result, so that the resource selection condition of the user equipment is reflected by the orthogonal sequence, and the collision probability of resource selection within the preset range is reduced.
Referring to fig. 7, a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention is shown, where the data transmission apparatus is applied to a first user equipment, where the first user equipment is any user equipment in a cell covered by a base station, and as long as the user equipment needs to detect whether a selected target uplink transmission resource conflicts with an uplink transmission resource selected by other user equipment in the cell, the data transmission apparatus can perform detection by using the data transmission method according to the embodiment of the present invention. As shown in the figure, the data transmission apparatus of the embodiment of the present invention includes a first obtaining module 100, a second obtaining module 101, an operation module 102, and a determination module 103;
a first obtaining module 100, configured to obtain a target orthogonal sequence corresponding to a preselected target uplink transmission resource;
a second obtaining module 101, configured to obtain an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of a plurality of second user equipments within a preset range;
an operation module 102, configured to perform correlation operation on the target orthogonal sequence and an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of the plurality of second user equipments;
a determining module 103, configured to determine whether to perform uplink data transmission on the target uplink transmission resource according to the result of the correlation operation.
Optionally, the uplink transmission resources correspond to the orthogonal sequences one to one;
the uplink transmission resources comprise time domain, frequency domain and codebook three-dimensional orthogonal resources.
As an optional implementation manner, the acquiring, by the second acquiring module 101, an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of a plurality of second user equipments within a preset range specifically includes:
establishing data connection with a plurality of second user equipment within a preset range of a cell;
and acquiring an orthogonal sequence corresponding to the uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipments based on the preset time-frequency resource of the data connection.
Optionally, 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.
As another optional implementation manner, the preset range includes multiple cooperative group areas in a cell, the first user equipment belongs to a target cooperative group area in the multiple cooperative group areas, the first user equipment is a management user equipment in the target cooperative group area, and the multiple second user equipments include user equipments in the target cooperative area except the first user equipment and all user equipments in a cooperative area in the multiple cooperative areas except the target cooperative area; the acquiring, by the second acquiring module 101, an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of a plurality of second user equipments within a preset range specifically includes:
establishing data connection with user equipment in the target cooperation group region, and acquiring an orthogonal sequence corresponding to uplink transmission resources pre-selected by the user equipment in the target cooperation group region based on preset time-frequency resources of the data connection;
and receiving orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipment in the cooperative group region uploaded by the management user equipment in each cooperative group region except the target cooperative group region in the plurality of cooperative group regions forwarded by the base station.
Optionally, the data transmission device of the embodiment of the present invention further includes an upload module;
and the uploading module is used for uploading the orthogonal sequences corresponding to the uplink transmission resources preselected by all the user equipment in the target cooperation area to the base station.
Specifically, optionally, the determining module 103, according to the result of the correlation operation, specifically determining whether to perform uplink data transmission on the target uplink transmission resource includes:
and if the result of the correlation operation is smaller than a preset threshold value, the first user equipment determines to perform uplink data transmission on the target uplink transmission resource.
In the embodiment of the invention, a first user equipment acquires a target orthogonal sequence corresponding to a preselected target uplink transmission resource, acquires an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment in a plurality of second user equipments within a preset range, performs correlation operation on the target orthogonal sequence and the acquired orthogonal sequence corresponding to the uplink transmission resource preselected by the plurality of second user equipments, and determines whether uplink data transmission is performed on the target uplink transmission resource according to the operation result, so that the resource selection condition of the user equipment is reflected by the orthogonal sequence, and the collision probability of resource selection within the preset range is reduced.
Referring to fig. 8, fig. 8 is a schematic structural diagram of a data transmission device according to an embodiment of the present invention. The data transmission method provided by the embodiment of the invention can be used for detecting the target uplink transmission resource 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 equipment in the cell. As shown in fig. 8, the data transmission apparatus includes a processor 41, a memory 42, and a network interface 43. The processor 41 is connected to the memory 42 and the network interface 43, for example, the processor 41 may be connected to the memory 42 and the network interface 43 through a bus.
The processor 41 may be a Central Processing Unit (CPU), a 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 PLD may be a Complex Programmable Logic Device (CPLD), a field-programmable gate array (FPGA), a General Array Logic (GAL), or any combination thereof.
The memory 42 is used for storing the received orthogonal sequence of the second user equipment and the target orthogonal sequence of the first user equipment, etc. The memory 42 may include a volatile memory (RAM), such as a random-access memory (RAM); the memory 42 may also include a non-volatile memory (SSD), such as a read-only memory (ROM), a flash memory (flash memory), a hard disk (HDD) or a solid-state drive (SSD); the memory 42 may also comprise a combination of the above-mentioned kinds of memories.
The network interface 43 may include a wired network interface or a wireless network interface. The first user equipment may communicate with the second user equipment via the network interface 43, while the first user equipment may communicate with the base station via the network interface 43.
acquiring a target orthogonal sequence corresponding to a preselected target uplink transmission resource; acquiring an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in a plurality of second user equipments within a preset range through a network interface 43; the first user equipment performs correlation operation on the target orthogonal sequence and an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipments; and the first user equipment determines whether to transmit uplink data on the target uplink transmission resource or not according to the result of the correlation operation.
Further, the uplink transmission resources correspond to the orthogonal sequences one to one;
the uplink transmission resources comprise time domain, frequency domain and codebook three-dimensional orthogonal resources.
Further, the processor 41 may also establish a data connection with a plurality of second user equipments within a preset range of the cell; and based on the preset time-frequency resource of the data connection, the first user equipment acquires an orthogonal sequence corresponding to the uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipment.
And mapping, by each of the plurality of second user equipments, 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 multiple cooperation group areas in a cell, the first user equipment belongs to a target cooperation group area in the multiple cooperation group areas, the first user equipment is a management user equipment in the target cooperation group area, and the multiple second user equipment includes user equipment in the target cooperation area except the first user equipment and all user equipment in cooperation areas in the multiple cooperation areas except the target cooperation area;
the processor 41 may further establish a data connection with the ue in the target cooperative group region, and obtain an orthogonal sequence corresponding to an uplink transmission resource pre-selected by the ue in the target cooperative group region based on a preset time-frequency resource of the data connection; and receiving orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipment in the cooperative group region uploaded by the management user equipment in each cooperative group region except the target cooperative group region in the plurality of cooperative group regions forwarded by the base station.
Further, the processor 41 may also upload, to the base station, orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipments in the target cooperation area.
Further, the processor 41 may determine to perform uplink data transmission on the target uplink transmission resource if the result of the correlation operation is smaller than a preset threshold.
In the embodiment of the invention, a first user equipment acquires a target orthogonal sequence corresponding to a preselected target uplink transmission resource, acquires an orthogonal sequence corresponding to an uplink transmission resource preselected by each second user equipment in a plurality of second user equipments within a preset range, performs correlation operation on the target orthogonal sequence and the acquired orthogonal sequence corresponding to the uplink transmission resource preselected by the plurality of second user equipments, and determines whether uplink data transmission is performed on the target uplink transmission resource according to the operation result, so that the resource selection condition of the user equipment is reflected by the orthogonal sequence, and the collision probability of resource selection within the preset range is reduced.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by a computer program, which can be stored in a computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a ROM, a RAM, or the like.
The above disclosure is only a preferred embodiment of the present invention, and certainly, the present invention should not be limited by the above disclosure, and therefore the scope of the present invention should be determined by the claims.
Claims (14)
1. A method of data transmission, comprising:
the first user equipment acquires a target orthogonal sequence corresponding to a preselected target uplink transmission resource;
the first user equipment acquires an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in a plurality of second user equipments within a preset range;
the first user equipment performs correlation operation on the target orthogonal sequence and an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipments;
if the result of the correlation operation is smaller than a preset threshold value, the first user equipment determines to perform uplink data transmission on the target uplink transmission resource;
and if the result of the correlation operation is greater than a preset threshold value, the first user equipment does not perform uplink data transmission on the target uplink transmission resource.
2. The method of claim 1, wherein there is a one-to-one correspondence between the uplink transmission resources and the orthogonal sequences;
the uplink transmission resources comprise time domain, frequency domain and codebook three-dimensional orthogonal resources.
3. The method of claim 1, wherein the obtaining, by the first ue, an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of a plurality of second ues within a preset range comprises:
the first user equipment establishes data connection with a plurality of second user equipment within a preset range of a cell;
and based on the preset time-frequency resource of the data connection, the first user equipment acquires an orthogonal sequence corresponding to the uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipment.
4. The method according to claim 3, wherein each of the plurality of second ues maps the orthogonal sequence corresponding to the uplink transmission resource selected by the second ue to the preset time-frequency resource of the data connection.
5. The method according to claim 1, wherein the preset range includes multiple cooperative group areas within a cell, the first user equipment belongs to a target cooperative group area among the multiple cooperative group areas, and the first user equipment is a management user equipment in the target cooperative group area, and the multiple second user equipments include user equipments within the target cooperative area except the first user equipment and all user equipments within a cooperative area of the multiple cooperative areas except the target cooperative area;
the method for acquiring, by the first user equipment, the orthogonal sequence corresponding to the uplink transmission resource pre-selected by each of the plurality of second user equipments within the preset range includes:
the first user equipment establishes data connection with user equipment in the target cooperation group region, and acquires an orthogonal sequence corresponding to uplink transmission resources pre-selected by the user equipment in the target cooperation group region based on preset time-frequency resources of the data connection;
and the first user equipment receives orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipment in the cooperative group region uploaded by the management user equipment in each cooperative group region except the target cooperative group region in the plurality of cooperative group regions forwarded by the base station.
6. The method of claim 5, wherein the method further comprises:
and the first user equipment uploads orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipment in the target cooperation area to the base station.
7. The method of claim 1, wherein the determining, by the first ue, whether to perform uplink data transmission on the target uplink transmission resource according to the result of the correlation operation comprises:
and if the result of the correlation operation is smaller than a preset threshold value, the first user equipment determines to perform uplink data transmission on the target uplink transmission resource.
8. A data transmission apparatus, applied to a first user equipment, comprising:
a first obtaining module, configured to obtain a target orthogonal sequence corresponding to a preselected target uplink transmission resource;
the second obtaining module is used for obtaining an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in a plurality of second user equipments within a preset range;
the operation module is used for carrying out correlation operation on the target orthogonal sequence and an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipments;
a determining module, configured to determine that uplink data transmission is performed on the target uplink transmission resource if a result of the correlation operation is smaller than a preset threshold; and if the result of the correlation operation is greater than a preset threshold value, not performing uplink data transmission on the target uplink transmission resource.
9. The apparatus of claim 8, wherein there is a one-to-one correspondence between the uplink transmission resources and the orthogonal sequences;
the uplink transmission resources comprise time domain, frequency domain and codebook three-dimensional orthogonal resources.
10. The apparatus of claim 8, wherein the obtaining, by the second obtaining module, the orthogonal sequence corresponding to the uplink transmission resource pre-selected by each of the plurality of second user equipments within the preset range specifically includes:
establishing data connection with a plurality of second user equipment within a preset range of a cell;
and acquiring an orthogonal sequence corresponding to the uplink transmission resource pre-selected by each second user equipment in the plurality of second user equipments based on the preset time-frequency resource of the data connection.
11. The apparatus of claim 10, wherein each of the plurality of second ues maps an orthogonal sequence corresponding to the uplink transmission resource selected by the second ue to the preset time-frequency resource of the data connection.
12. The apparatus according to claim 8, wherein the preset range includes multiple cooperative group areas in a cell, the first user equipment belongs to a target cooperative group area in the multiple cooperative group areas, and the first user equipment is a management user equipment in the target cooperative group area, and the multiple second user equipments include user equipments in the target cooperative area except the first user equipment and all user equipments in a cooperative area in the multiple cooperative areas except the target cooperative area; the obtaining, by the second obtaining module, an orthogonal sequence corresponding to an uplink transmission resource pre-selected by each of a plurality of second user equipments within a preset range specifically includes:
establishing data connection with user equipment in the target cooperation group region, and acquiring an orthogonal sequence corresponding to uplink transmission resources pre-selected by the user equipment in the target cooperation group region based on preset time-frequency resources of the data connection;
and receiving orthogonal sequences corresponding to uplink transmission resources pre-selected by all user equipment in the cooperative group region uploaded by the management user equipment in each cooperative group region except the target cooperative group region in the plurality of cooperative group regions forwarded by the base station.
13. The apparatus of claim 12, wherein the apparatus further comprises:
and the uploading module is used for uploading the orthogonal sequences corresponding to the uplink transmission resources preselected by all the user equipment in the target cooperation area to the base station.
14. The apparatus of claim 8, wherein the determining module, according to the result of the correlation operation, specifically determines whether to perform uplink data transmission on the target uplink transmission resource comprises:
and if the result of the correlation operation is smaller than a preset threshold value, the first user equipment determines to perform uplink data transmission on the target uplink transmission resource.
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| CN201610539659.3A CN107592652B (en) | 2016-07-07 | 2016-07-07 | Data transmission method and device |
| PCT/CN2017/089524 WO2018006710A1 (en) | 2016-07-07 | 2017-06-22 | Data transmission method and apparatus |
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| PL2254271T3 (en) * | 2009-05-19 | 2013-07-31 | Ericsson Telefon Ab L M | Control circuit and method for allocating orthogonal sequences |
| JP2016149583A (en) * | 2013-06-06 | 2016-08-18 | シャープ株式会社 | Terminal, base station device, wireless communication system and communication method |
| CN106464314B (en) * | 2014-03-31 | 2019-11-15 | 华为技术有限公司 | The device and method of resource allocation for the access transmission of Sparse Code multiple access |
| CN105357716B (en) * | 2015-12-10 | 2019-04-02 | 北京北方烽火科技有限公司 | A kind of resource allocation methods and device |
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| CN102938690A (en) * | 2011-08-15 | 2013-02-20 | 华为技术有限公司 | Sending method, receiving method and device of response messages |
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