CN112822785A - Data transmission method, device and system and readable storage medium - Google Patents
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 29
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- 238000004590 computer program Methods 0.000 claims description 5
- 238000010586 diagram Methods 0.000 description 8
- 238000004891 communication Methods 0.000 description 7
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
- H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
Abstract
The application provides a data transmission method, a data transmission device, a data transmission system and a readable storage medium. A data transmission system comprising: a base station and a terminal; the terminal is used for transmitting an uplink reference signal to the base station; the uplink reference signals comprise reference signals of a plurality of uplink channels; the base station is used for receiving an uplink reference signal transmitted by the terminal; determining the signal quality of the plurality of uplink channels according to the uplink reference signal; determining a downlink channel of a current downlink signal to be transmitted according to the signal quality of the plurality of uplink channels; transmitting the downlink signal to be transmitted to the terminal based on the downlink channel; and the terminal is used for receiving the downlink signal transmitted by the base station. The data transmission rate of the data transmission system is high.
Description
Technical Field
The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, a system, and a readable storage medium for data transmission.
Background
The multi-antenna technology makes the antenna data of the wireless terminal more and more, the wireless communication environment of the terminal more and more complex, and the accuracy of the downlink channel estimation of the base station directly affects the data transmission rate, so that the improvement of the accuracy of the downlink channel estimation is very important.
In the prior art, a downlink channel is estimated through a frequency point of an uplink channel, which results in a large estimation error, thereby affecting the data transmission rate of the downlink channel.
Disclosure of Invention
An object of the embodiments of the present application is to provide a method, an apparatus, a system, and a readable storage medium for data transmission, so as to improve a data transmission rate.
In a first aspect, the present application provides a method for data transmission, which is applied to a base station, and the method includes: receiving an uplink reference signal transmitted by a terminal; the uplink reference signals comprise reference signals of a plurality of uplink channels; determining the signal quality of the plurality of uplink channels according to the uplink reference signal; determining a downlink channel of a current downlink signal to be transmitted according to the signal quality of the plurality of uplink channels; and transmitting the downlink signal to be transmitted to the terminal based on the downlink channel.
In the embodiment of the present application, compared with the prior art, the downlink channel is determined by analyzing the signal quality of the uplink channels by using the characteristic that the terminal can send signals of the uplink channels, and the accuracy of downlink channel estimation is improved, so that the data transmission rate of the downlink channel is improved.
As a possible implementation manner, the determining the signal qualities of the multiple uplink channels according to the uplink reference signal includes: calculating the signal-to-interference-and-noise ratios of the plurality of uplink channels according to the uplink reference signals; and determining the signal quality of the plurality of uplink channels according to the signal-to-interference-and-noise ratio.
In the embodiment of the application, the signal quality of the uplink channel is effectively determined by calculating the signal-to-interference-and-noise ratio of the uplink channel.
As a possible implementation manner, the determining, according to the signal qualities of the multiple uplink channels, a downlink channel of a downlink signal to be currently transmitted includes: if the downlink signal to be transmitted currently corresponds to a downlink channel, determining the downlink channel corresponding to the downlink signal to be transmitted currently according to the uplink channel with the best signal quality in the plurality of uplink channels; and if the downlink signal to be transmitted currently corresponds to a plurality of downlink channels, determining the downlink channel corresponding to the downlink signal to be transmitted currently according to the uplink channel of which the signal quality meets the preset condition in the plurality of uplink channels.
In the embodiment of the application, when the downlink signal is determined, if the downlink signal only corresponds to one downlink channel, the downlink channel is determined according to the uplink channel with the best signal quality; if the downlink signal corresponds to a plurality of downlink channels, determining the downlink channels according to the uplink channels with the signal quality meeting the preset conditions; and the data throughput and the data transmission efficiency of the downlink channel are improved.
In a second aspect, an embodiment of the present application provides a data transmission method, which is applied to a terminal, and the method includes: transmitting an uplink reference signal to a base station; the uplink reference signals comprise reference signals of a plurality of uplink channels; receiving a downlink signal transmitted by the base station; the downlink signal is transmitted through a downlink channel determined based on signal qualities of the plurality of uplink channels.
In the embodiment of the application, the terminal transmits the reference signals of the plurality of uplink channels to the base station, so that the base station realizes the determination of the downlink channel with higher precision according to the signal quality of the plurality of uplink channels, and the data transmission rate of the downlink channel between the base station and the terminal is improved.
As a possible implementation manner, the downlink signal is a signal combined by a plurality of carriers; after the receiving the downlink signal transmitted by the base station, the method further includes: acquiring various carrier combinations configured in advance; each carrier combination comprises a plurality of carriers, and the plurality of carriers respectively comprised by different carrier combinations are different; judging whether a carrier combination matched with the downlink signal exists in the various carrier combinations; if the carrier combination matched with the downlink signal exists in the plurality of carrier combinations, determining the downlink signal as an effective downlink signal; and if the carrier combination matched with the downlink signal does not exist in the plurality of carrier combinations, determining the downlink signal as an invalid downlink signal.
In the embodiment of the application, for the terminal, a plurality of carrier combinations are configured in advance, when a multi-carrier signal of the base station is received, the multi-carrier signal is judged according to the carrier combinations, the preset carrier combinations and the carrier signal are adapted, the adaptation between the terminal and the base station is further realized, and the effective and reliable transmission of data is ensured.
As a possible implementation, the method further includes: and discarding the invalid downlink signal.
In the embodiment of the application, the signals which are not adapted can be discarded, and the reliability of data transmission is improved.
In a third aspect, an embodiment of the present application provides a data transmission apparatus, which includes functional modules for implementing the data transmission method described in the first aspect and any one of the possible implementation manners of the first aspect.
In a fourth aspect, an embodiment of the present application provides a data transmission apparatus, which includes functional modules for implementing the method for data transmission described in the second aspect and any one of the possible implementation manners of the second aspect.
In a fifth aspect, an embodiment of the present application provides a data transmission system, including: a base station and a terminal; the terminal is used for transmitting an uplink reference signal to the base station; the uplink reference signals comprise reference signals of a plurality of uplink channels; the base station is used for receiving an uplink reference signal transmitted by the terminal; determining the signal quality of the plurality of uplink channels according to the uplink reference signal; determining a downlink channel of a current downlink signal to be transmitted according to the signal quality of the plurality of uplink channels; transmitting the downlink signal to be transmitted to the terminal based on the downlink channel; and the terminal is used for receiving the downlink signal transmitted by the base station.
In a sixth aspect, an embodiment of the present application provides a readable storage medium, where a computer program is stored on the readable storage medium, and the computer program is executed by a computer to perform the method for data transmission as described in the first aspect and any one of the possible implementation manners of the first aspect or the second aspect and any one of the possible implementation manners of the second aspect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a data transmission system according to an embodiment of the present application;
fig. 2 is a flowchart of interaction between a terminal and a base station according to an embodiment of the present disclosure;
fig. 3 is a schematic diagram of an uplink channel provided in an embodiment of the present application;
fig. 4 is a schematic diagram of a downlink channel according to an embodiment of the present application;
fig. 5 is a block diagram of a first apparatus for data transmission according to an embodiment of the present disclosure;
fig. 6 is a block diagram of a second apparatus for data transmission according to an embodiment of the present disclosure.
Icon: 100-a data transmission system; 110-a terminal; 120-a base station; 500-a first device for data transmission; 510-a first receiving module; 520-a first processing module; 530-a first transmission module; 600-a second means of data transmission; 610-a second transmission module; 620-second receiving module.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
Referring to fig. 1, which is a schematic structural diagram of a data transmission system 100 according to an embodiment of the present disclosure, the data transmission system 100 includes a terminal 110 and a base station 120, and the terminal 110 is in communication connection with the base station 120. The data transmission system 100 may also be understood as a communication system formed by the terminal 110 and the base station 120.
Among them, the terminal 110 may be a 5G terminal; the base station 120 may be a server.
For the data transmission system 100, the related art involved includes: the mobile communication system includes 5G (generation 5 mobile communication) NR (New Radio, New air interface), SRS (Sounding Reference Signal), CA (Carrier Aggregation), and MIMO (multiple Input multiple Output, which may be understood as multiple antennas).
And also to: the uplink reference signal, a known signal provided by the terminal 110 to the base station 120 for channel estimation. An uplink channel, a channel from terminal 110 to base station 120; downlink channel, channel from base station 120 to terminal 110. The frequency and bandwidth of different uplink channels may differ; the frequency and bandwidth of the different downlink channels may also differ.
In this embodiment of the present application, the terminal 110 may simultaneously send multiple uplink carriers, and by using this characteristic, the terminal 110 may transmit an uplink reference signal including multiple uplink channels to the base station 120, and the base station 120 uses the uplink reference signal to achieve estimation of a corresponding downlink channel.
Referring to fig. 2, a schematic view of an interaction procedure between a terminal 110 and a base station 120 according to an embodiment of the present application is shown, where the interaction procedure includes:
step 210: terminal 110 transmits an uplink reference signal to base station 120. The uplink reference signal includes reference signals of a plurality of uplink channels.
Step 220: base station 120 receives the uplink reference signal transmitted by terminal 110.
Step 230: the base station 120 determines the signal quality of a plurality of uplink channels according to the uplink reference signal.
Step 240: the base station 120 determines a downlink channel of a downlink signal to be currently transmitted according to the signal quality of the plurality of uplink channels.
Step 250: base station 120 transmits a downlink signal to be transmitted to terminal 110 based on the downlink channel.
Step 260: terminal 110 receives the downlink signal transmitted by base station 120.
In the embodiment of the present application, compared with the prior art, by using the characteristic that the terminal 110 can send signals of multiple uplink channels, the base station 120 analyzes the signal quality of multiple uplink channels to determine a downlink channel, so as to improve the accuracy of downlink channel estimation, thereby improving the data transmission rate of the downlink channel; further, when the base station 120 transmits data to the terminal 110 using the downlink channel with higher accuracy, the data transmission rate is higher.
A detailed implementation of steps 210-260 is described next.
In step 210, the terminal 110 may utilize CA to implement transmission of uplink reference signals of multiple uplink channels. CA is to group 2 or more than 2 carrier elements together to support larger transmission bandwidth, the maximum bandwidth of each carrier element is 20MHz, and the total transmission bandwidth is 100MHz at most. In addition, CA supports aggregation between different carrier units, such as: aggregation between carrier units of the same or different bandwidths; or aggregation between contiguous or non-contiguous carrier elements within the same frequency band; aggregation of carrier elements within different frequency bands. Each uplink carrier component may correspond to an uplink channel based on the characteristics of CA.
For example, please refer to fig. 3, which is a schematic diagram of the frequency and bandwidth of the uplink channel of the uplink reference signal, in this way, the transmission bandwidth can be greatly increased.
In step 220, the base station 120 receives the uplink reference signal transmitted by the terminal 110.
In step 230, the base station 120 determines the signal quality of a plurality of uplink channels according to the uplink reference signal.
As an alternative embodiment, step 230 includes: calculating the signal-to-interference-and-noise ratios of a plurality of uplink channels according to the uplink reference signals; and determining the signal quality of a plurality of uplink channels according to the signal-to-interference-and-noise ratio.
In this embodiment, the sir is used to estimate the signal quality of each uplink channel. The way of calculating the sir is well-known in the art and will not be described in detail in the embodiments of the present application.
After obtaining each sir, the signal quality of the plurality of uplink channels may be determined in combination with a preset correspondence between the sirs and the signal quality. Generally speaking, there is a direct relationship between the signal to interference plus noise ratio and the signal quality, such as: the signal to interference plus noise ratio/signal quality is a, and based on the known signal to interference plus noise ratio and a value, the signal quality can be determined. In practical application, the correspondence between the two can be reasonably and flexibly set in combination with a specific application scenario, which is not limited in the embodiment of the present application.
In the embodiment of the application, the signal quality of the uplink channel is effectively determined by calculating the signal-to-interference-and-noise ratio of the uplink channel.
In addition to determining the signal quality of multiple uplink channels by the sir, other parameters may also be used to determine the signal quality, such as the snr, the carrier-to-interference ratio, etc., which are not limited in the embodiment of the present application.
After determining the signal quality of the uplink channels in step 230, in step 240, the base station 120 determines the downlink channels of the downlink signals to be currently transmitted according to the signal qualities of the multiple uplink channels.
As an alternative embodiment, step 240 includes: if the downlink signal to be transmitted currently corresponds to a downlink channel, determining the downlink channel corresponding to the downlink signal to be transmitted currently according to the uplink channel with the best signal quality in the plurality of uplink channels; and if the downlink signal to be transmitted currently corresponds to a plurality of downlink channels, determining the downlink channel corresponding to the downlink signal to be transmitted currently according to the uplink channel of which the signal quality meets the preset condition in the plurality of uplink channels.
In this embodiment, the downlink signal to be currently transmitted is divided into two cases, one case is a case where the downlink signal corresponds to one downlink channel, and only one downlink channel needs to be estimated at this time; the other is a case where the downlink signal corresponds to a plurality of downlink channels, and at this time, estimation of the plurality of downlink channels is required.
In the first case, the plurality of uplink channels may be sorted according to the signal quality, then the uplink channel with the highest signal quality is selected, and then the downlink channel is determined based on the frequency point and the bandwidth of the uplink channel.
In the second case, a plurality of uplink channels may be sorted according to the signal quality, then the corresponding uplink channel is selected according to the number of the downlink channels to be estimated, and then the downlink channel is determined based on the frequency point and the bandwidth of the corresponding uplink channel.
The uplink channel satisfying the preset condition may be an uplink channel whose signal quality rank satisfies the preset condition, such as an uplink channel of the first 2 bits, or an uplink channel of the first 3 bits. The uplink channel satisfying the preset condition may also be an uplink channel with a signal quality greater than the preset signal quality, that is, the preset condition may be flexibly set according to an actual application scenario, which is not limited in the embodiment of the present application.
Such as: assuming that the number of downlink channels to be estimated is 2, selecting uplink channels with signal quality ranked at the top 2 bits, and determining 2 downlink channels respectively based on the frequency points and bandwidths of the 2 uplink channels. For another example: assuming that the number of downlink channels to be estimated is 3, selecting uplink channels with signal quality ranked at the first 3 bits, and determining 3 downlink channels respectively based on the frequency points and bandwidths of the 3 uplink channels.
In the embodiment of the application, when the downlink signal is determined, if the downlink signal only corresponds to one downlink channel, the downlink channel is determined according to the uplink channel with the best signal quality; if the downlink signal corresponds to a plurality of downlink channels, determining the downlink channels according to the uplink channels with the signal quality meeting the preset conditions; and the data throughput and the data transmission efficiency of the downlink channel are improved.
In any case, when the base station 120 determines the downlink channel based on the uplink channel, the frequency point and the bandwidth of the uplink channel may be used to estimate the downlink channel, and estimating the channel by using the frequency point and the bandwidth belongs to a mature technology in the field and is not described in detail in the embodiment of the present application.
For example, referring to fig. 4, a schematic diagram of the frequency and the bandwidth of the downlink channel finally determined by the base station 120 is shown, and in this way, both the data throughput and the data transmission efficiency of the downlink channel are correspondingly improved.
After the base station 120 determines the downlink channel in step 240, in step 250, the base station 120 transmits a downlink signal to be transmitted to the terminal 110 based on the downlink channel. For the base station 120, the transmission of the downlink signal can be realized under the condition that the frequency and the bandwidth of the downlink channel are determined, which also belongs to the technology mature in the field and is not specifically described in the embodiment of the present application.
After base station 120 transmits the downlink signal to terminal 110 in step 250, terminal 110 receives the downlink signal transmitted by base station 120 in step 260.
For the terminal 110, after receiving the downlink signal, if the downlink signal is a single carrier signal, it indicates that the corresponding downlink channel is also single, and at this time, no adaptation of the signal is required between the terminal 110 and the base station 120. If the multi-carrier signal (i.e. the signal of the combination of multiple carriers) of the downlink signal indicates that there are multiple corresponding downlink channels, then adaptation of the signal between the terminal 110 and the base station 120 is required.
Therefore, as an alternative implementation, after step 260, terminal 110 performs the following process: acquiring various carrier combinations configured in advance; judging whether a carrier combination matched with the downlink signal exists in the various carrier combinations; if the carrier combination matched with the downlink signal exists in the various carrier combinations, determining the downlink signal as an effective downlink signal; and if the carrier combination matched with the downlink signal does not exist in the plurality of carrier combinations, determining the downlink signal as an invalid downlink signal. Each carrier combination comprises a plurality of carriers, and the plurality of carriers respectively comprised by different carrier combinations are different.
In this embodiment, since the multiple uplink channels on the terminal 110 are known, the terminal 110 may also determine the signal quality of the multiple uplink channels, and configure multiple possible carrier combination modes according to the determined signal quality, for example: the signal quality of the three uplink channels U1-U3 goes from high to low, and the corresponding carrier combination method may include: u1 and U2, U1, U2 and U3, and U2 and U3.
And matching the carrier combination mode of the downlink signal with the various carrier combinations based on the various carrier combinations configured in advance, and determining that the carrier combination matched with the downlink signal exists in the various carrier combinations if the carrier combination of the downlink signal belongs to one of the various carrier combinations. And if the carrier combination of the downlink signal does not belong to the carrier combinations in the plurality of carrier combinations, determining that the carrier combination matched with the downlink signal does not exist in the plurality of carrier combinations.
Further, if there is a matched carrier combination, the downlink signal may be determined as a valid downlink signal, and at the terminal 110, the valid downlink signal may be processed accordingly. If there is no matching carrier combination, the downlink signal may be determined to be an invalid downlink signal.
For invalid downlink signals, various processing modes can be adopted. As an alternative, the terminal 110 may discard the invalid downlink signal. As other optional embodiments, the terminal 110 may also mark an invalid downlink signal; or generate corresponding feedback information based on the invalid downlink signal, and then transmit the feedback information to the base station 120, etc., which is not limited in this embodiment.
In the embodiment of the present application, for the terminal 110, multiple carrier combinations are configured in advance, and when receiving a multi-carrier signal of the base station 120, the multi-carrier signal is determined according to the carrier combinations, so as to implement adaptation between a preset carrier combination and the carrier signal, further implement adaptation between the terminal 110 and the base station 120, and ensure effective and reliable transmission of data.
Based on the same inventive concept, please refer to fig. 5, an embodiment of the present application further provides a first apparatus 500 for data transmission, which is applied to the base station 120 and includes: a first receiving module 510, a first processing module 520, and a first transmitting module 530.
A first receiving module 510, configured to receive an uplink reference signal transmitted by the terminal 110; the uplink reference signals comprise reference signals of a plurality of uplink channels; a first processing module 520, configured to determine signal qualities of the multiple uplink channels according to the uplink reference signal; determining a downlink channel of a current downlink signal to be transmitted according to the signal quality of the plurality of uplink channels; a first transmission module 530, configured to transmit the downlink signal to be transmitted to the terminal 110 based on the downlink channel.
In this embodiment of the application, the first processing module 520 is specifically configured to: calculating the signal-to-interference-and-noise ratios of the plurality of uplink channels according to the uplink reference signals; and determining the signal quality of the plurality of uplink channels according to the signal-to-interference-and-noise ratio.
In this embodiment of the application, the first processing module 520 is further specifically configured to: if the downlink signal to be transmitted currently corresponds to a downlink channel, determining the downlink channel corresponding to the downlink signal to be transmitted currently according to the uplink channel with the best signal quality in the plurality of uplink channels; and if the downlink signal to be transmitted currently corresponds to a plurality of downlink channels, determining the downlink channel corresponding to the downlink signal to be transmitted currently according to the uplink channel of which the signal quality meets the preset condition in the plurality of uplink channels.
Each functional module in the first apparatus 500 for data transmission corresponds to the step performed by the base station 120 in the interaction flow shown in fig. 2, and therefore, the implementation of each functional module refers to the implementation of the step performed by the base station 120, and is not described herein again.
Based on the same inventive concept, referring to fig. 6, in an embodiment of the present application, there is provided a second apparatus 600 for data transmission, where the apparatus is applied to a terminal 110, and the apparatus includes: a second transmitting module 610 and a second receiving module 620.
A second transmission module 610, configured to transmit the uplink reference signal to the base station 120; the uplink reference signals comprise reference signals of a plurality of uplink channels; a second receiving module 620, configured to receive a downlink signal transmitted by the base station 120; the downlink signal is transmitted through a downlink channel determined based on signal qualities of the plurality of uplink channels.
In an embodiment of the present application, the apparatus further includes a second processing module, configured to: acquiring various carrier combinations configured in advance; each carrier combination comprises a plurality of carriers, and the plurality of carriers respectively comprised by different carrier combinations are different; judging whether a carrier combination matched with the downlink signal exists in the various carrier combinations; if the carrier combination matched with the downlink signal exists in the plurality of carrier combinations, determining the downlink signal as an effective downlink signal; and if the carrier combination matched with the downlink signal does not exist in the plurality of carrier combinations, determining the downlink signal as an invalid downlink signal.
In an embodiment of the present application, the second processing module is further configured to: and discarding the invalid downlink signal.
Each functional module in the second apparatus 600 for data transmission corresponds to the step performed by the terminal 110 in the interaction flow shown in fig. 2, and therefore, the implementation of each functional module refers to the implementation of the step performed by the terminal 110, and is not described herein again.
Based on the same inventive concept, the present application further provides a readable storage medium, where a computer program is stored, and the computer program is executed by a computer to perform the steps performed by the base station 120 or the steps performed by the terminal 110 described in the foregoing embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, 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 units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A method for data transmission, applied to a base station, the method comprising:
receiving an uplink reference signal transmitted by a terminal; the uplink reference signals comprise reference signals of a plurality of uplink channels;
determining the signal quality of the plurality of uplink channels according to the uplink reference signal;
determining a downlink channel of a current downlink signal to be transmitted according to the signal quality of the plurality of uplink channels;
and transmitting the downlink signal to be transmitted to the terminal based on the downlink channel.
2. The method of claim 1, wherein the determining the signal quality of the plurality of uplink channels according to the uplink reference signal comprises:
calculating the signal-to-interference-and-noise ratios of the plurality of uplink channels according to the uplink reference signals;
and determining the signal quality of the plurality of uplink channels according to the signal-to-interference-and-noise ratio.
3. The method according to claim 1, wherein the determining a downlink channel of a downlink signal to be currently transmitted according to the signal qualities of the plurality of uplink channels comprises:
if the downlink signal to be transmitted currently corresponds to a downlink channel, determining the downlink channel corresponding to the downlink signal to be transmitted currently according to the uplink channel with the best signal quality in the plurality of uplink channels;
and if the downlink signal to be transmitted currently corresponds to a plurality of downlink channels, determining the downlink channel corresponding to the downlink signal to be transmitted currently according to the uplink channel of which the signal quality meets the preset condition in the plurality of uplink channels.
4. A method for data transmission, which is applied to a terminal, the method comprising:
transmitting an uplink reference signal to a base station; the uplink reference signals comprise reference signals of a plurality of uplink channels;
receiving a downlink signal transmitted by the base station; the downlink signal is transmitted through a downlink channel determined based on signal qualities of the plurality of uplink channels.
5. The method of claim 4, wherein the downlink signal is a signal combined by a plurality of carriers; after the receiving the downlink signal transmitted by the base station, the method further includes:
acquiring various carrier combinations configured in advance; each carrier combination comprises a plurality of carriers, and the plurality of carriers respectively comprised by different carrier combinations are different;
judging whether a carrier combination matched with the downlink signal exists in the various carrier combinations;
if the carrier combination matched with the downlink signal exists in the plurality of carrier combinations, determining the downlink signal as an effective downlink signal;
and if the carrier combination matched with the downlink signal does not exist in the plurality of carrier combinations, determining the downlink signal as an invalid downlink signal.
6. The method of claim 5, further comprising:
and discarding the invalid downlink signal.
7. An apparatus for data transmission, applied to a base station, the apparatus comprising:
the first receiving module is used for receiving an uplink reference signal transmitted by a terminal; the uplink reference signals comprise reference signals of a plurality of uplink channels;
a processing module, configured to determine signal qualities of the uplink channels according to the uplink reference signal; determining a downlink channel of a current downlink signal to be transmitted according to the signal quality of the plurality of uplink channels;
and the first transmission module is used for transmitting the downlink signal to be transmitted to the terminal based on the downlink channel.
8. An apparatus for data transmission, applied to a terminal, the apparatus comprising:
the second transmission module is used for transmitting the uplink reference signal to the base station; the uplink reference signals comprise reference signals of a plurality of uplink channels;
a second receiving module, configured to receive a downlink signal transmitted by the base station; the downlink signal is transmitted through a downlink channel determined based on signal qualities of the plurality of uplink channels.
9. A data transmission system, comprising:
a base station and a terminal;
the terminal is used for transmitting an uplink reference signal to the base station; the uplink reference signals comprise reference signals of a plurality of uplink channels;
the base station is used for receiving an uplink reference signal transmitted by the terminal; determining the signal quality of the plurality of uplink channels according to the uplink reference signal; determining a downlink channel of a current downlink signal to be transmitted according to the signal quality of the plurality of uplink channels; transmitting the downlink signal to be transmitted to the terminal based on the downlink channel;
and the terminal is used for receiving the downlink signal transmitted by the base station.
10. A readable storage medium, characterized in that the readable storage medium has stored thereon a computer program which, when executed by a computer, performs the method of data transmission according to any one of claims 1-3 or claims 4-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110051678.2A CN112822785A (en) | 2021-01-14 | 2021-01-14 | Data transmission method, device and system and readable storage medium |
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