CN111107628A - Data transmission method and device - Google Patents
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- H—ELECTRICITY
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- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
- H04L5/0057—Physical resource allocation for CQI
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W74/00—Wireless channel access
- H04W74/08—Non-scheduled access, e.g. ALOHA
- H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
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Abstract
The embodiment of the invention provides a data transmission method and a data transmission device, wherein the method comprises the following steps: when detecting that the data to be transmitted need to be transmitted on the unauthorized spectrum channel, acquiring a target transmission initial position of the data to be transmitted on the unauthorized spectrum channel from a preset data transmission initial position, wherein the preset data transmission initial position comprises: the first symbol and the fourth symbol of the first slot of the subframe, and the first symbol and the fourth symbol of the second slot of the subframe; and starting to send the data to be transmitted to a terminal at the target transmission starting position. The embodiment of the invention improves the resource utilization rate.
Description
Technical Field
The embodiment of the invention relates to the technical field of communication, in particular to a data transmission method and device.
Background
With the development of mobile internet, the existing network capacity has been unable to meet the rapidly increasing data traffic service demand. Licensed Assisted Access (LAA) deploys Long Term Evolution (LTE) technology in an unlicensed frequency band by using a carrier aggregation technology, thereby effectively expanding the capacity of a cellular network. With the increasing demand of 5G applications, the fact that spectrum resources are very crowded is a necessary result, and especially licensed spectrum resources are very scarce and cannot meet the requirement of future wireless communication development, so that a 5G unlicensed spectrum utilization technology is urgently needed to be researched.
LAA was introduced in 3GPP Release 13 as part of LTE Advanced Pro. LAA combines unlicensed spectrum (5GHz) LTE and licensed spectrum LTE together using carrier aggregation for the downlink. When the LAA base station prepares to perform data transmission on the LAA secondary cell, a Clear Channel Assessment (CCA) operation needs to be performed on the LAA secondary cell first, whether a channel is idle is determined by monitoring the channel, and if the channel is idle, the transmitter starts data transmission, otherwise, data transmission is not performed. However, the start time of downlink data Transmission in LAA can only be at the 1 st symbol S00 or the 8 th symbol S07 of the subframe, and the CCA may monitor that the channel is idle at any time point, which results in that the time and Transmission Opportunity (TxOP) for the CCA to monitor that the channel is idle cannot be guaranteed to be exactly aligned with the slot boundary, thereby resulting in waste of system resources.
Disclosure of Invention
The embodiment of the invention provides a data transmission method and a data transmission device, which are used for solving the problem that system resources are easily wasted when downlink data is transmitted on an unauthorized frequency spectrum in the prior art.
In order to solve the above problem, an embodiment of the present invention provides a data transmission method, where the method includes:
when detecting that the data to be transmitted need to be transmitted on the unauthorized spectrum channel, acquiring a target transmission initial position of the data to be transmitted on the unauthorized spectrum channel from a preset data transmission initial position, wherein the preset data transmission initial position comprises: the first symbol and the fourth symbol of the first slot of the subframe, and the first symbol and the fourth symbol of the second slot of the subframe;
and starting to send the data to be transmitted to a terminal at the target transmission starting position.
In a second aspect, an embodiment of the present invention provides a data transmission apparatus, where the apparatus includes:
a first obtaining module, configured to obtain, when it is detected that there is data to be transmitted that needs to be transmitted on an unlicensed spectrum channel, a target transmission start position of the data to be transmitted on the unlicensed spectrum channel from a preset data transmission start position, where the preset data transmission start position includes: the first symbol and the fourth symbol of the first slot of the subframe, and the first symbol and the fourth symbol of the second slot of the subframe;
and the first sending module is used for sending the data to be transmitted to a terminal at the target transmission starting position.
In a third aspect, an embodiment of the present invention provides an electronic device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the processor implements the steps of the data transmission method when executing the computer program.
In a fourth aspect, an embodiment of the present invention provides a non-transitory computer-readable storage medium, on which a computer program is stored, and the computer program, when executed by a processor, implements the steps of the data transmission method.
The data transmission method and the device provided by the embodiment of the invention have the advantages that by presetting the initial position of data transmission, and the preset data transmission start position comprises a first symbol and a fourth symbol of a first time slot of the sub-frame, a first symbol and a fourth symbol of a second time slot, when detecting that the data to be transmitted needs to be transmitted on the unlicensed spectrum channel, the target transmission starting position can be obtained from the four preset data transmission starting positions, and the data to be transmitted is transmitted to the terminal from the target transmission initial position, the data transmission initial position when the downlink data transmission is carried out on the unauthorized frequency spectrum channel is increased, and furthermore, symbols which cannot be used for data transmission in the sub-frame are reduced, the waste of resources is avoided, and the resource utilization rate when downlink data transmission is carried out on the unauthorized frequency spectrum channel is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 is a flow chart illustrating the steps of a data transmission method according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating data transmission when a target transmission start position is a first symbol of a first slot of a preset subframe n according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating data transmission when a target transmission start position is a fourth symbol of a first slot of a preset subframe n according to an embodiment of the present invention;
fig. 4 is a schematic diagram illustrating data transmission when a target transmission start position is a first symbol of a second slot of a preset subframe n according to an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating data transmission when a target transmission start position is a fourth symbol of a second slot of a preset subframe n according to an embodiment of the present invention;
FIG. 6 is a diagram illustrating partial subframe scheduling in an embodiment of the invention;
FIG. 7 is a block diagram of a data transmission apparatus according to an embodiment of the present invention;
fig. 8 is a schematic physical structure diagram of an electronic device in an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, but 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.
As shown in fig. 1, which is a flowchart illustrating steps of a data transmission method according to an embodiment of the present invention, the method includes the following steps:
step 101: when the fact that the data to be transmitted need to be transmitted on the unauthorized spectrum channel is detected, a target transmission starting position of the data to be transmitted on the unauthorized spectrum channel is obtained from a preset data transmission starting position.
In this step, specifically, the preset data transmission start position includes: the first and fourth symbols of the first slot of the subframe, and the first and fourth symbols of the second slot of the subframe.
When the data transmission initial position is set, the signaling overhead, the Physical Downlink Control Channel (PDCCH) blind detection complexity, the transmission flexibility and other aspects can be considered comprehensively to obtain the four different data transmission initial positions.
Therefore, by presetting the data transmission starting position as the first symbol and the fourth symbol of the first time slot of the subframe and the first symbol and the fourth symbol of the second time slot of the subframe, compared with the prior art, the data transmission starting position when the data is transmitted on the unlicensed spectrum channel is increased, the probability that the data can be directly transmitted when the CCA is successful is further increased, and the problem that when the middle symbol of the subframe time slot of the CCA is successful, other symbols of the subframe time slot cannot be used for transmitting the data, and the data can only be transmitted through the starting symbols of the first time slot and the second time slot is avoided, so that the utilization rate of the symbols in the subframe is improved, and the resource utilization rate in the system is improved.
When a target transmission starting position of data to be transmitted on an unlicensed spectrum channel is acquired from a preset data transmission starting position, performing Clear Channel Assessment (CCA) detection on the unlicensed spectrum channel; when CCA success is detected, acquiring a time point when CCA success is detected; and acquiring a data transmission starting position closest to the time point from the preset data transmission starting positions, and determining the data transmission starting position closest to the time point as the target transmission starting position.
Wherein detecting that the CCA is successful, that is, detecting that the unlicensed spectrum channel is in a clear state.
Therefore, the data transmission starting position which is closest to the time point when the CCA is successfully detected in the preset data transmission starting positions is determined as the target transmission starting position, the waste of time domain resources in a channel is reduced, and the resource utilization rate is further improved.
Step 102: and starting to transmit the data to be transmitted to the terminal at the target transmission starting position.
In this step, specifically, when a target transmission start position for starting transmission of the data to be transmitted is determined, the data to be transmitted may be started to be transmitted to the terminal at the target transmission start position.
The following can explain cases where the target transmission start position is different from the preset data transmission start position.
For example, as shown in fig. 2, when the target transmission start position is the first symbol S00 of the first Slot1 of the subframe n set in advance, data to be transmitted may be transmitted from the first symbol S00 at this time. At this time, the symbols filled with oblique lines in fig. 2, that is, all symbols in the subframe n and all symbols of the subframe n +1 can be used for transmitting data to be transmitted.
For another example, as shown in fig. 3, when the target transmission start position is the fourth symbol S03 of the first Slot1 of the preset subframe n, the data to be transmitted may be transmitted from the fourth symbol S03 of the first Slot of the subframe at this time. At this time, the symbols filled with oblique lines in fig. 3, namely four symbols (including the fourth symbol S03 of the first Slot 1) after the fourth symbol S03 of the first Slot1 in the subframe n, all symbols in the second Slot2 and all symbols of the subframe n +1 can be used for transmitting data to be transmitted.
For another example, as shown in fig. 4, when the target transmission start position is the first symbol S07 of the second Slot2 of the preset subframe n, the data to be transmitted may be transmitted from the first symbol S07 of the second Slot of the subframe at this time. At this time, the symbols filled with oblique lines in fig. 4, that is, all symbols after the first symbol S07 of the second Slot2 in the subframe n (including the first symbol S07 of the second Slot 2) and all symbols of the subframe n +1 can be used for transmitting data to be transmitted.
For another example, as shown in fig. 5, when the target transmission start position is the fourth symbol S10 of the second Slot2 of the preset subframe n, the data to be transmitted may be transmitted from the fourth symbol S10 of the second Slot of the subframe at this time. At this time, the symbols filled with oblique lines in fig. 4, i.e., all symbols after the fourth symbol S10 of the second Slot2 in the subframe n (including the fourth symbol S10 of the second Slot 2) and all symbols of the subframe n +1 can be used for transmitting data to be transmitted.
In addition, in this embodiment, before obtaining the target transmission starting position of the data to be transmitted on the unlicensed spectrum channel from the preset data transmission starting position, the method further includes: configuring a data packet corresponding to each data transmission starting position, wherein the length of the data packet is related to the corresponding data transmission starting position; at this time, when the data to be transmitted is sent to the terminal at the target transmission starting position, a target data packet corresponding to the target transmission starting position can be acquired; and starting to send the data to be transmitted to a terminal at the target transmission starting position through a target data packet corresponding to the target transmission starting position.
Wherein, the data packet corresponding to each data transmission starting position indicates that the length of the data packet corresponds to the data transmission starting position.
Specifically, when there is data to be transmitted that needs to be transmitted on the unlicensed spectrum channel, a CCA needs to be started first to perform channel energy detection, and the data can be transmitted only when it is determined that the channel is idle, but since the time point at which the channel is idle is unpredictable, that is, the size of the transmission resource that can be obtained cannot be predicted in advance by the base station, before the target transmission start position is obtained, a data packet corresponding to each data transmission start position needs to be configured in advance, so that after the target transmission start position is determined, the data to be transmitted can be transmitted directly through the data packet corresponding to the target transmission start position.
In addition, in this embodiment, before obtaining the target transmission starting position of the data to be transmitted on the unlicensed spectrum channel from the preset data transmission starting position, the method further includes: configuring scheduling information corresponding to each data transmission starting position, wherein the scheduling information is used for indicating the data transmission starting position;
at this time, after acquiring the target transmission starting position of the data to be transmitted on the unlicensed spectrum channel from the preset data transmission starting position, the method further includes: acquiring target scheduling information corresponding to the target transmission starting position; and sending the target scheduling information to a terminal.
Specifically, when there is data to be transmitted that needs to be transmitted on the unlicensed spectrum channel, a CCA needs to be started first to perform channel energy detection, and the data can be transmitted only when it is determined that the channel is idle, but since the time point at which the channel is idle is unpredictable, that is, the size of the transmission resource that can be obtained cannot be predicted in advance by the base station, before the target transmission start position is obtained, scheduling information corresponding to each data transmission start position needs to be configured in advance to indicate the data transmission start position.
Of course, after determining the target transmission start position, target scheduling information corresponding to the target transmission start position may be transmitted to the terminal. Specifically, the target scheduling information may be sent before sending the data to be transmitted, and at this time, the terminal may receive the target scheduling information and receive the sent data to be transmitted according to the target scheduling information.
In addition, specifically, the scheduling information may be two-bit higher layer signaling subframestarttiming, that is, a data transmission start position may be indicated by the signaling subframestarttiming.
Specifically, the specific manner of indicating the data transmission start position by subframe startposition can be shown in the following table:
| subframeStartPosition | data transmission starting position |
| 00 | First symbol S00 of first time slot |
| 01 | The fourth symbol S03 of the first time slot |
| 10 | First symbol S07 of second slot |
| 11 | The fourth symbol S10 of the second slot |
Further, the present embodiment can be explained below by specific examples.
As shown in fig. 6, there is a WIFI signal on the unlicensed spectrum channel, and at this time, when data transmission needs to be performed on the unlicensed spectrum channel, CCA detection needs to be performed, and CAA detection succeeds, and no data transmission exists within a preset time (a signal portion is retained in fig. 6), data transmission may be started. In fig. 6, CAA detection is performed on the 2 nd to 4 th symbols of the first slot of the subframe n, and CCA succeeds in the 4 th symbol S003, at this time, the subframe n starts a partial subframe scheduling policy, that is, a 3-symbol data packet and a 7-symbol data packet are sequentially scheduled (a slant line filling portion of the subframe n in the figure), and then a normal subframe scheduling process is performed, that is, a complete subframe scheduling process from the subframe n +1 to the subframe n +3 is performed; in addition, the subframe n +4 also belongs to a part of subframes, a 3-symbol data packet (a slash filling part in the subframe n + 4) is scheduled, and the transmission is finished. Therefore, compared with the prior art, the embodiment avoids the problem that part of symbols (3 symbols in the example) of the subframe cannot be used for data transmission by increasing the data transmission starting position, thereby avoiding the waste of resources and improving the resource utilization rate.
In addition, as shown in fig. 7, a block diagram of a data transmission apparatus in an embodiment of the present invention is shown, where the apparatus includes:
a first obtaining module 701, configured to obtain, when it is detected that there is data to be transmitted that needs to be transmitted on an unlicensed spectrum channel, a target transmission start position of the data to be transmitted on the unlicensed spectrum channel from a preset data transmission start position, where the preset data transmission start position includes: the first symbol and the fourth symbol of the first slot of the subframe, and the first symbol and the fourth symbol of the second slot of the subframe;
a first sending module 702, configured to start sending the data to be transmitted to a terminal at the target transmission starting position.
Optionally, the first obtaining module 701 includes:
a detecting unit, configured to perform clear channel assessment CCA detection on the unlicensed spectrum channel;
a first acquisition unit, configured to acquire, when a CCA is detected to be successful, a time point when the CCA is detected to be successful;
and the second acquisition unit is used for acquiring the data transmission starting position closest to the time point from the preset data transmission starting positions and determining the data transmission starting position closest to the time point as the target transmission starting position.
Optionally, the apparatus further comprises:
a first configuration module, configured to configure scheduling information corresponding to each data transmission start position, where the scheduling information is used to indicate the data transmission start position;
the second acquisition module is used for acquiring target scheduling information corresponding to the target transmission starting position;
and the second sending module is used for sending the target scheduling information to a terminal.
Optionally, the apparatus further comprises:
a second configuration module, configured to configure a data packet corresponding to each data transmission start position, where the length of the data packet is related to the data transmission start position corresponding to the data packet;
the first transmitting module includes:
a third obtaining unit, configured to obtain a target data packet corresponding to the target transmission start position;
and the sending unit is used for sending the data to be transmitted to a terminal at the target transmission starting position through a target data packet corresponding to the target transmission starting position.
According to the data transmission device provided by the embodiment of the invention, the data transmission initial position is preset, and the preset data transmission initial position comprises the first symbol and the fourth symbol of the first time slot of the subframe and the first symbol and the fourth symbol of the second time slot, so that when the situation that the data to be transmitted needs to be transmitted on the unauthorized spectrum channel is detected, the target transmission initial position can be obtained from the preset four data transmission initial positions, and the data to be transmitted is transmitted to the terminal from the target transmission initial position, the data transmission initial position when the data is transmitted on the unauthorized spectrum is increased, further the symbols which cannot be used for data transmission in the subframe are reduced, the waste of resources is avoided, and the resource utilization rate when the data is transmitted on the unauthorized spectrum is improved.
In addition, as shown in fig. 8, an entity structure schematic diagram of the electronic device provided in the embodiment of the present invention is shown, where the electronic device may include: a processor (processor)810, a communication Interface 820, a memory 830 and a communication bus 840, wherein the processor 810, the communication Interface 820 and the memory 830 communicate with each other via the communication bus 840. The processor 810 may invoke a computer program stored on the memory 830 and executable on the processor 810 to perform the methods provided by the various embodiments described above, including, for example: when detecting that the data to be transmitted need to be transmitted on the unauthorized spectrum channel, acquiring a target transmission initial position of the data to be transmitted on the unauthorized spectrum channel from a preset data transmission initial position, wherein the preset data transmission initial position comprises: the first symbol and the fourth symbol of the first slot of the subframe, and the first symbol and the fourth symbol of the second slot of the subframe; and starting to send the data to be transmitted to a terminal at the target transmission starting position.
In addition, the logic instructions in the memory 830 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Embodiments of the present invention further provide a non-transitory computer-readable storage medium, on which a computer program is stored, where the computer program is implemented to perform the method provided in the foregoing embodiments when executed by a processor, and the method includes: when detecting that the data to be transmitted need to be transmitted on the unauthorized spectrum channel, acquiring a target transmission initial position of the data to be transmitted on the unauthorized spectrum channel from a preset data transmission initial position, wherein the preset data transmission initial position comprises: the first symbol and the fourth symbol of the first slot of the subframe, and the first symbol and the fourth symbol of the second slot of the subframe; and starting to send the data to be transmitted to a terminal at the target transmission starting position.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of data transmission, the method comprising:
when detecting that the data to be transmitted need to be transmitted on the unauthorized spectrum channel, acquiring a target transmission initial position of the data to be transmitted on the unauthorized spectrum channel from a preset data transmission initial position, wherein the preset data transmission initial position comprises: the first symbol and the fourth symbol of the first slot of the subframe, and the first symbol and the fourth symbol of the second slot of the subframe;
and starting to send the data to be transmitted to a terminal at the target transmission starting position.
2. The method according to claim 1, wherein the obtaining a target transmission starting position of data to be transmitted on an unlicensed spectrum channel from preset data transmission starting positions comprises:
performing Clear Channel Assessment (CCA) detection on the unlicensed spectrum channel;
when CCA success is detected, acquiring a time point when CCA success is detected;
and acquiring a data transmission starting position closest to the time point from the preset data transmission starting positions, and determining the data transmission starting position closest to the time point as the target transmission starting position.
3. The method according to claim 1, wherein before obtaining the target transmission start position of the data to be transmitted on the unlicensed spectrum channel from the preset data transmission start positions, the method further comprises:
configuring scheduling information corresponding to each data transmission starting position, wherein the scheduling information is used for indicating the data transmission starting position;
after the target transmission starting position of the data to be transmitted on the unlicensed spectrum channel is obtained from the preset data transmission starting position, the method further includes:
acquiring target scheduling information corresponding to the target transmission starting position;
and sending the target scheduling information to a terminal.
4. The method according to claim 1, wherein before obtaining the target transmission start position of the data to be transmitted on the unlicensed spectrum channel from the preset data transmission start positions, the method further comprises:
configuring a data packet corresponding to each data transmission starting position, wherein the length of the data packet is related to the corresponding data transmission starting position;
the starting of sending the data to be transmitted to the terminal at the target transmission starting position comprises:
acquiring a target data packet corresponding to the target transmission starting position;
and starting to send the data to be transmitted to a terminal at the target transmission starting position through a target data packet corresponding to the target transmission starting position.
5. A data transmission apparatus, characterized in that the apparatus comprises:
a first obtaining module, configured to obtain, when it is detected that there is data to be transmitted that needs to be transmitted on an unlicensed spectrum channel, a target transmission start position of the data to be transmitted on the unlicensed spectrum channel from a preset data transmission start position, where the preset data transmission start position includes: the first symbol and the fourth symbol of the first slot of the subframe, and the first symbol and the fourth symbol of the second slot of the subframe;
and the first sending module is used for sending the data to be transmitted to a terminal at the target transmission starting position.
6. The apparatus of claim 5, wherein the first obtaining module comprises:
a detecting unit, configured to perform clear channel assessment CCA detection on the unlicensed spectrum channel;
a first acquisition unit, configured to acquire, when a CCA is detected to be successful, a time point when the CCA is detected to be successful;
and the second acquisition unit is used for acquiring the data transmission starting position closest to the time point from the preset data transmission starting positions and determining the data transmission starting position closest to the time point as the target transmission starting position.
7. The apparatus of claim 5, further comprising:
a first configuration module, configured to configure scheduling information corresponding to each data transmission start position, where the scheduling information is used to indicate the data transmission start position;
the second acquisition module is used for acquiring target scheduling information corresponding to the target transmission starting position;
and the second sending module is used for sending the target scheduling information to a terminal.
8. The apparatus of claim 5, further comprising:
a second configuration module, configured to configure a data packet corresponding to each data transmission start position, where the length of the data packet is related to the data transmission start position corresponding to the data packet;
the first transmitting module includes:
a third obtaining unit, configured to obtain a target data packet corresponding to the target transmission start position;
and the sending unit is used for sending the data to be transmitted to a terminal at the target transmission starting position through a target data packet corresponding to the target transmission starting position.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the steps of the data transmission method according to any of claims 1 to 4 when executing the computer program.
10. A non-transitory computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the data transmission method according to any one of claims 1 to 4.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021228073A1 (en) * | 2020-05-15 | 2021-11-18 | 维沃移动通信有限公司 | Random access signal transmitting method and terminal |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105307180A (en) * | 2015-09-25 | 2016-02-03 | 宇龙计算机通信科技(深圳)有限公司 | Data transmission method and device based on LAA (Licensed-Assisted Access) system |
| CN105515741A (en) * | 2014-09-26 | 2016-04-20 | 电信科学技术研究院 | Data transmission method in unlicensed frequency band and data transmission device |
| CN105634666A (en) * | 2014-11-05 | 2016-06-01 | 电信科学技术研究院 | Method and device for transmitting data on non-authorized frequency band |
| CN106102168A (en) * | 2016-05-20 | 2016-11-09 | 深圳市金立通信设备有限公司 | The control method of a kind of data transmission and relevant device |
| CN106992847A (en) * | 2016-01-20 | 2017-07-28 | 中兴通讯股份有限公司 | Upstream data sending, receiving method, device, terminal and base station |
| CN108260181A (en) * | 2016-12-29 | 2018-07-06 | 维沃移动通信有限公司 | A kind of transmission method, network side equipment and the user terminal of synchronous access block |
| CN108632981A (en) * | 2017-03-23 | 2018-10-09 | 华为技术有限公司 | A kind of downlink synchronous signal sending method and method of reseptance and equipment |
-
2018
- 2018-10-25 CN CN201811249858.6A patent/CN111107628A/en not_active Withdrawn
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105515741A (en) * | 2014-09-26 | 2016-04-20 | 电信科学技术研究院 | Data transmission method in unlicensed frequency band and data transmission device |
| CN105634666A (en) * | 2014-11-05 | 2016-06-01 | 电信科学技术研究院 | Method and device for transmitting data on non-authorized frequency band |
| CN105307180A (en) * | 2015-09-25 | 2016-02-03 | 宇龙计算机通信科技(深圳)有限公司 | Data transmission method and device based on LAA (Licensed-Assisted Access) system |
| CN106992847A (en) * | 2016-01-20 | 2017-07-28 | 中兴通讯股份有限公司 | Upstream data sending, receiving method, device, terminal and base station |
| CN106102168A (en) * | 2016-05-20 | 2016-11-09 | 深圳市金立通信设备有限公司 | The control method of a kind of data transmission and relevant device |
| WO2017197949A1 (en) * | 2016-05-20 | 2017-11-23 | 深圳市金立通信设备有限公司 | Control method for data transmission, and relevant device |
| CN108260181A (en) * | 2016-12-29 | 2018-07-06 | 维沃移动通信有限公司 | A kind of transmission method, network side equipment and the user terminal of synchronous access block |
| CN108632981A (en) * | 2017-03-23 | 2018-10-09 | 华为技术有限公司 | A kind of downlink synchronous signal sending method and method of reseptance and equipment |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021228073A1 (en) * | 2020-05-15 | 2021-11-18 | 维沃移动通信有限公司 | Random access signal transmitting method and terminal |
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