Data Transmission Method and Apparatus, Computer-Readable Storage Medium

Abstract

A data transmission method, apparatus, and computer-readable storage medium, the method comprising: predicting a target beam at which feedback information is received before sending uplink data using PUR; indicating the target beam or associated information of the target beam when sending the uplink data; receiving the feedback information on a target downlink carrier associated with the target beam. Through the solution of the present invention, the effectiveness of data transmission in a non-terrestrial network scenario can be ensured, and by indicating the receiving beam of the PUR SS, it is ensured that the UE can successfully receive feedback information after sending PUR uplink data.

Description

Technical Field

[0001] The present invention relates to the field of communication technologies, and in particular, to a data transmission method, an apparatus, and a computer-readable storage medium. Background Art

[0002] In the future, Internet of Things (IoT) devices will access through satellite networks (i.e., non-terrestrial networks (NTN)) to achieve communication. In the non-terrestrial network scenario, a cell consists of multiple beams. Due to the rapid movement of the satellite, the user equipment (UE) needs to perform beam switching frequently, so a set of beam management mechanisms need to be set for the UE. However, the current IoT protocols based on terrestrial networks (such as Narrow Band Internet of Things (NB-IoT) or Enhanced Machine Type Communication (eMTC)) do not support beam management mechanisms.

[0003] According to the existing discussion results, the most likely beam management method in the future is to perform beam management by means of carrier switching. That is, a cell consists of multiple beams, and different beams correspond to different carriers, and beam switching is achieved by carrier switching.

[0004] In the IoT NTN scenario based on non-terrestrial networks, due to the rapid movement of the satellite and the movement of the UE itself, the following situation is very likely to occur: after the UE uses the Preconfigure Uplink resource (PUR) on the uplink carrier of beam 1 to send uplink data, it moves to beam 2 before receiving the feedback information from the network. If the carrier preconfigured by the network for sending feedback information does not belong to beam 2, the UE will not be able to receive the feedback information correctly. Summary of the Invention

[0005] The technical problem solved by the present invention is how to ensure the effectiveness of data transmission in the non-terrestrial network scenario, so that the UE can successfully receive the feedback information after sending PUR uplink data.

[0006] To solve the above technical problem, an embodiment of the present invention provides a data transmission method, including: predicting a target beam where the feedback information will be received before sending uplink data using PUR; indicating the target beam or the associated information of the target beam when sending the uplink data; and receiving the feedback information on a target downlink carrier associated with the target beam.

[0007] Optionally, the data transmission method further includes: receiving configuration information, where the configuration information includes an uplink carrier for PUR transmission, a plurality of candidate downlink carriers associated with the uplink carrier for PUR transmission, and an association relationship between the candidate downlink carriers and beams.

[0008] Optionally, the configuration information further includes PUR resource blocks associated with each candidate downlink carrier.

[0009] Optionally, the association information of the target beam includes the target downlink carrier, and indicating the association information of the target beam when transmitting the uplink data includes: determining the candidate downlink carrier associated with the target beam among the plurality of candidate downlink carriers as the target downlink carrier; using the PUR resource block associated with the target downlink carrier to transmit the uplink data.

[0010] Optionally, the association information of the target beam includes the index of the target downlink carrier, and indicating the association information of the target beam when transmitting the uplink data includes: determining the candidate downlink carrier associated with the target beam among the plurality of candidate downlink carriers as the target downlink carrier; carrying the association information in the uplink data transmitted.

[0011] Optionally, the data transmission method further includes: receiving configuration information, where the configuration information includes an uplink carrier for PUR transmission, a plurality of candidate beams associated with the uplink carrier for PUR transmission, and a set of downlink carriers associated with each candidate beam, and the target beam belongs to the plurality of candidate beams.

[0012] Optionally, the configuration information further includes PUR resource blocks associated with each candidate beam.

[0013] Optionally, indicating the target beam when transmitting the uplink data includes: using the PUR resource block associated with the target beam to transmit the uplink data.

[0014] Optionally, receiving the feedback information on the target downlink carrier associated with the target beam includes: selecting a target downlink carrier from the set of downlink carriers associated with the target beam; receiving the feedback information on the target downlink carrier.

[0015] Optionally, indicating the target beam when transmitting the uplink data includes: carrying the index of the target beam in the uplink data transmitted.

[0016] Optionally, the data transmission method further includes: receiving configuration information, where the configuration information includes an uplink carrier for PUR transmission, a first set of candidate downlink carriers associated with a beam non-switching scenario, and a second set of candidate downlink carriers associated with a beam switching scenario.

[0017] Optionally, the configuration information further includes PUR resource blocks associated with each candidate downlink carrier set.

[0018] Optionally, the association information of the target beam includes a candidate downlink carrier set, and indicating the association information of the target beam when sending the uplink data includes: determining the scene to which it belongs according to the prediction result; selecting PUR resource blocks associated with the first candidate downlink carrier set or the second candidate downlink carrier set according to the determined scene to send the uplink data.

[0019] Optionally, determining the scene to which it belongs according to the prediction result includes: if the predicted target beam is different from the current beam when sending the uplink data, determining that it belongs to a beam switching scene; otherwise, if the predicted target beam is the current beam, determining that it belongs to a beam non-switching scene.

[0020] Optionally, receiving the feedback information on the target downlink carrier associated with the target beam includes: selecting a target downlink carrier from the candidate downlink carrier sets indicated when sending the uplink data; receiving the feedback information on the target downlink carrier.

[0021] Optionally, the configuration information is carried by system broadcast information or RRC dedicated signaling.

[0022] Optionally, predicting the target beam when receiving the feedback information includes: measuring the channel quality of multiple candidate downlink carriers; predicting the target beam when receiving the feedback information according to the measurement result.

[0023] Optionally, predicting the target beam when receiving the feedback information includes: predicting the target beam when receiving the feedback information according to the positioning information.

[0024] To solve the above technical problems, an embodiment of the present invention further provides a data transmission device, including: a prediction module, configured to predict the target beam when receiving the feedback information before sending the uplink data using PUR; an indication module, configured to indicate the target beam or the association information of the target beam when sending the uplink data; a receiving module, configured to receive the feedback information on the target downlink carrier associated with the target beam.

[0025] To solve the above technical problems, an embodiment of the present invention further provides a data transmission method, including: receiving uplink data sent using PUR, and obtaining the target beam or the association information of the target beam indicated by the user equipment when sending the uplink data; sending feedback information on the target downlink carrier associated with the target beam.

[0026] Optionally, the data transmission method further includes: sending configuration information, where the configuration information includes an uplink carrier for PUR transmission, a plurality of candidate downlink carriers associated with the uplink carrier for PUR transmission, and an association relationship between the candidate downlink carriers and beams.

[0027] Optionally, the configuration information further includes PUR resource blocks associated with each candidate downlink carrier.

[0028] Optionally, the association information of the target beam includes the target downlink carrier, and obtaining the association information of the target beam indicated by the user equipment when sending the uplink data includes: determining the target downlink carrier according to the PUR resource block used for sending the uplink data.

[0029] Optionally, the association information of the target beam includes the index of the target downlink carrier, and the association information is carried in the uplink data.

[0030] Optionally, the data transmission method further includes: sending configuration information, where the configuration information includes an uplink carrier for PUR transmission, a plurality of candidate beams associated with the uplink carrier for PUR transmission, and a set of downlink carriers associated with each candidate beam, and the target beam belongs to the plurality of candidate beams.

[0031] Optionally, the configuration information further includes PUR resource blocks associated with each candidate beam.

[0032] Optionally, obtaining the target beam indicated by the user equipment when sending the uplink data includes: determining the target beam according to the PUR resource block used for sending the uplink data.

[0033] Optionally, the target downlink carrier is all downlink carriers in the set of downlink carriers associated with the target beam.

[0034] Optionally, the index of the target beam is carried in the uplink data.

[0035] Optionally, the data transmission method further includes: sending configuration information, where the configuration information includes an uplink carrier for PUR transmission, a first set of candidate downlink carriers associated with a beam non-switching scenario, and a second set of candidate downlink carriers associated with a beam switching scenario.

[0036] Optionally, the configuration information further includes PUR resource blocks associated with each set of candidate downlink carriers.

[0037] Optionally, the association information of the target beam includes a candidate downlink carrier set, and obtaining the association information of the target beam indicated by the user equipment when transmitting the uplink data includes: determining the candidate downlink carrier set according to the PUR resource block used for transmitting the uplink data, where the candidate downlink carrier set is selected from the first candidate downlink carrier set and the second candidate downlink carrier set.

[0038] Optionally, the target downlink carrier is all downlink carriers in the candidate downlink carrier set indicated by the association information.

[0039] Optionally, the configuration information is carried by system broadcast information or RRC dedicated signaling.

[0040] To solve the above technical problems, an embodiment of the present invention further provides a data transmission device, including: a receiving module, configured to receive uplink data transmitted using PUR and obtain the target beam or the association information of the target beam indicated by the user equipment when transmitting the uplink data; a transmitting module, configured to transmit feedback information on a target downlink carrier associated with the target beam.

[0041] To solve the above technical problems, an embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium is a non-volatile storage medium or a non-transient storage medium, and a computer program is stored thereon, and when the computer program is run by a processor, the steps of the above method are executed.

[0042] To solve the above technical problems, an embodiment of the present invention further provides a data transmission device, including a memory and a processor, where a computer program that can run on the processor is stored on the memory, and when the processor runs the computer program, the steps of the above method are executed.

[0043] Compared with the prior art, the technical solution of the embodiment of the present invention has the following beneficial effects:

[0044] For the UE side, an embodiment of the present invention provides a data transmission method, including: predicting a target beam when receiving feedback information before transmitting uplink data using PUR; indicating the target beam or the association information of the target beam when transmitting the uplink data; receiving the feedback information on a target downlink carrier associated with the target beam.

[0045] By adopting this implementation solution, the effectiveness of data transmission in non-terrestrial network scenarios can be ensured. By indicating the receiving beam of PURSS (i.e., the target beam), it is ensured that the UE can successfully receive feedback information after sending PUR uplink data. Specifically, before sending uplink data using PUR, predict the target beam where the feedback information will be received in the future. Further, actively inform the network of the information related to the target beam when sending the uplink data, so as to indicate that the network sends feedback information on the target downlink carrier associated with the target beam. Thus, the UE can make a prediction before sending uplink data and indicate the prediction result in the uplink data, so as to successfully receive feedback information on the target beam.

[0046] For the network side, the embodiment of the present invention also provides a data transmission method, including: receiving uplink data sent using PUR, and obtaining the target beam or the associated information of the target beam indicated by the user equipment when sending the uplink data; sending feedback information on the target downlink carrier associated with the target beam.

[0047] By adopting this implementation solution, the effectiveness of data transmission in non-terrestrial network scenarios can be ensured. By indicating the receiving beam of PURSS (i.e., the target beam), it is ensured that the UE can successfully receive feedback information after sending PUR uplink data. Specifically, the received uplink data carries the relevant information of the target beam explicitly or implicitly, so that the network knows the actual target beam where the UE receives the feedback information. Further, send feedback information on the target downlink carrier associated with the target beam indicated by the UE to ensure that the UE correctly receives the feedback information. Description of the Drawings

[0048] Figure 1 is a flowchart of a data transmission method according to the first embodiment of the present invention;

[0049] Figure 2 is a resource schematic diagram of a typical application scenario according to the embodiment of the present invention;

[0050] Figure 3 is Figure 2 the beam schematic diagram of the shown application scenario;

[0051] Figure 4 is a structural schematic diagram of a data transmission device according to the first embodiment of the present invention;

[0052] Figure 5 is a flowchart of a data transmission method according to the second embodiment of the present invention;

[0053] Figure 6 is a structural schematic diagram of a data transmission device according to the second embodiment of the present invention. Detailed Embodiments

[0054] As mentioned in the background technology, in the Internet of Things (IoT NTN) scenario based on non-terrestrial networks, due to the rapid movement of satellites and the movement of UEs, the beam (i.e., carrier) where the PUR SS receives data may change compared to the beam (i.e., carrier) where the PUR uplink data is sent. How to indicate the receiving beam (or carrier) of the PUR SS is an urgent problem to be solved.

[0055] To solve the above technical problems, an embodiment of the present invention provides a data transmission method, including: before using PUR to send uplink data, predicting the target beam when receiving feedback information; indicating the target beam or associated information of the target beam when sending the uplink data; receiving the feedback information at the target downlink carrier associated with the target beam.

[0056] By adopting this implementation scheme, the effectiveness of data transmission in non-terrestrial network scenarios can be ensured, and the UE can successfully receive feedback information after sending PUR uplink data by indicating the receiving beam of PURSS (i.e., the target beam). Specifically, before using PUR to send uplink data, the target beam where feedback information will be received in the future is predicted. Furthermore, when sending uplink data, the information related to the target beam is actively notified to the network to instruct the network to send feedback information on the target downlink carrier associated with the target beam. As a result, the UE can make a prediction before sending uplink data and indicate the prediction result in the uplink data, so as to successfully receive feedback information in the target beam.

[0057] "PUR" as described in this implementation refers to the Preconfigured Uplink Resource (abbreviated as PUR). Specifically, in order to enable the UE to directly transmit small data packets in the idle state, the existing NB-IoT or Enhanced Machine Type Communication (abbreviated as eMTC) mechanism is that the network configures dedicated periodic PUR and the corresponding downlink search space window (abbreviated as PUR SS Window) for the UE through RRC dedicated signaling. Among them, the uplink carrier configured with PUR will be uniquely associated with a downlink carrier. The existing protocol stipulates that the network will only configure one uplink carrier for the UE to send PUR through RRC dedicated signaling, and one downlink carrier for receiving feedback information. The UE can send uplink data through PUR, and then receive an acknowledgement (abbreviated as ACK) or fallback indication or retransmission scheduling information in the downlink search space window configured for the corresponding downlink carrier. Among them, the fallback indication is used to instruct the UE to fallback to the Random Access Channel (abbreviated as RACH) or early data transmission (abbreviated as EDT, also known as early data transmission) for data transmission. The network can control the effectiveness of PUR resources through the fallback indication. That is, when the uplink resources are tense, the network can instruct the UE to fallback to use RACH or / and EDT for data transmission. The UE can directly send uplink data on PUR, thus avoiding the process of the UE initiating random access to enter the connected state.

[0058] The "NB-IOT multi-carrier" described in this implementation plan refers to the multi-carrier of Narrow Band Internet of Things (NB-IoT for short). Specifically, since the bandwidth of a single-frequency point cell in NB-IoT is only 180 kilohertz (kHz), after deducting the overhead of Narrowband Primary Synchronization Signal (NPSS for short), Narrowband Secondary Synchronization Signal (NSSS for short) and System Information Block (SIB), the remaining service channel capacity is very small. To support a large number of terminals, multiple frequency points are required to increase the network capacity. In addition to the anchor carrier that includes NPSS, NSSS and Narrowband Physical Broadcast Channel (NPBCH) in the cell, several non-anchor carriers that do not include NPSS, NSSS and NPBCH can also be included. Generally speaking, a cell includes one anchor carrier and several non-anchor carriers. The spectral bandwidth of each carrier is 180 kHz, and the maximum spectral span of all carriers in the cell does not exceed 20 megahertz (MHz).

[0059] The "anchor carrier" refers to that in a multi-carrier cell, there is exactly one downlink carrier that supports simultaneously carrying NPSS, NSSS, NPBCH, Narrowband Physical Downlink Control Channel (NPDCCH for short) and Narrowband Physical Downlink Shared Channel (NPDSCH for short), and this downlink carrier is called the anchor carrier. The UE needs to monitor NPSS, NSSS, NPBCH, NPDCCH and NPDSCH information on the anchor carrier.

[0060] The "non-anchor carrier" refers to that in a multi-carrier cell, there can be several downlink carriers that only carry NPDCCH and NPDSCH, but do not carry NPSS, NSSS and NPBCH channels, and are called non-anchor carriers. The UE can perform data transmission on the non-anchor carrier. In addition, before the UE enters the connected state, the network will specify a carrier for subsequent downlink data transmission through the fourth message (Msg4) of the random access process. The UE can perform paging monitoring on the non-anchor carrier in the idle state.

[0061] To make the above objects, features, and beneficial effects of the present invention more obvious and understandable, the following provides a detailed description of specific embodiments of the present invention with reference to the accompanying drawings.

[0062] Figure 1 It is a flowchart of a data transmission method according to the first embodiment of the present invention.

[0063] This implementation scheme can be applied to a satellite communication scenario, such as an Internet of Things (IoT NTN) scenario based on a non-terrestrial network (also known as a satellite IoT scenario).

[0064] This implementation scheme can be executed on the user equipment side, such as by a UE on the user equipment side. By executing this implementation scheme, even if the beam changes after sending uplink data using PUR, the UE can still successfully receive feedback information.

[0065] In a specific implementation, the data transmission method provided in the following steps S101 to S103 can be executed by a chip with data transmission functions in the user equipment or by a baseband chip in the user equipment.

[0066] Specifically, referring to Figure 1 , the data transmission method described in this embodiment may include the following steps:

[0067] Step S101, before sending uplink data using PUR, predict the target beam when receiving feedback information;

[0068] Step S102, indicate the target beam or the associated information of the target beam when sending the uplink data;

[0069] Step S103, receive the feedback information on the target downlink carrier associated with the target beam.

[0070] More specifically, the cell where the UE is located may include multiple beams, and different beams correspond to different carriers or carrier sets, and beam switching is achieved through carrier switching. For example, each beam may be respectively associated with a downlink carrier or a downlink carrier set.

[0071] In a specific implementation, step S101 may include the steps of: measuring the channel quality of multiple candidate downlink carriers; predicting the target beam when receiving feedback information according to the measurement results.

[0072] Specifically, the multiple candidate downlink carriers may be selected from the downlink carriers or downlink carrier sets associated with at least one beam.

[0073] For example, the beams adjacent to the currently located beam are denoted as adjacent beams, and the channel quality of each downlink carrier associated with the adjacent beams can be measured. Further, the beam associated with the downlink carrier with the best channel quality can be determined as the target beam.

[0074] In a variant, step S101 may include the steps of predicting the target beam where the feedback information is received according to the positioning information.

[0075] For example, the target beam where the UE is located when receiving the feedback information can be determined according to the satellite ephemeris information and the real-time position information of the UE.

[0076] In a specific implementation, the scenario to which it belongs can be determined according to the prediction result, that is, if the predicted target beam is different from the current beam where the UE sends the uplink data, it indicates that beam switching will occur in the future, belonging to the beam switching scenario; if the predicted target beam is the same as the current beam where the UE sends the uplink data, it indicates that beam switching will not occur in the future, belonging to the beam non-switching scenario.

[0077] In a specific implementation, before each use of PUR to send uplink data, the UE can execute step S101 to make a prediction and indicate the target beam related information in the uplink data.

[0078] Specifically, even if the prediction result is the beam non-switching scenario, the UE also needs to indicate when sending the uplink data so that the network knows the target beam for sending the feedback information.

[0079] In a specific implementation, before step S101, the data transmission method described in this embodiment may further include the step of receiving configuration information, where the configuration information includes the uplink carrier for PUR transmission, multiple candidate downlink carriers associated with the uplink carrier for PUR transmission, and the association relationship between the candidate downlink carriers and the beams.

[0080] Specifically, the configuration information may include the index of each candidate downlink carrier. Correspondingly, the association information of the target beam may include the index of the target downlink carrier.

[0081] Further, for the scenario of the beam-associated downlink carrier set, the network can select a downlink carrier from the beam-associated downlink carrier set to configure for the UE when generating the configuration information. That is, the multiple candidate downlink carriers associated with the uplink carrier in the configuration information come from different beams to ensure that the UE can find the corresponding candidate next carrier as the target downlink carrier in the configuration information when predicting any beam as the target beam. For example, the selection can be made according to the load conditions of the downlink carriers in the downlink carrier set.

[0082] Further, in step S102, the step of indicating the association information of the target beam when transmitting the uplink data may include: determining a candidate downlink carrier associated with the target beam among multiple candidate downlink carriers as the target downlink carrier; and carrying the association information in the uplink data transmitted.

[0083] For example, the network may configure an uplink carrier for PUR transmission for the UE through system broadcast information or Radio Resource Control (RRC) dedicated signaling, and configure multiple candidate downlink carriers for this uplink carrier. That is, each uplink carrier for PUR transmission may be associated with multiple candidate downlink carriers, and the multiple candidate downlink carriers respectively correspond to different beams. The UE introduces a specific cell in the uplink data transmitted using PUR, and the cell is used to carry the index of the target downlink carrier associated with the target beam. After the UE transmits the uplink data using PUR, it may receive corresponding feedback information on the determined target downlink carrier.

[0084] For example, the index of the target downlink carrier may be carried in the Narrowband Physical Uplink Shared Channel (NPUSCH) transmitted through PUR.

[0085] In a specific implementation, the configuration information may further include PUR resource blocks associated with each candidate downlink carrier.

[0086] Specifically, the PUR transmission opportunity may include multiple PUR resource blocks, and the configuration information may be used to indicate that each candidate downlink carrier is respectively associated with a different PUR resource block.

[0087] Correspondingly, in step S102, the step of indicating the association information of the target beam when transmitting the uplink data may include: determining a candidate downlink carrier associated with the target beam among the multiple candidate downlink carriers as the target downlink carrier; and transmitting the uplink data using the PUR resource block associated with the target downlink carrier.

[0088] For example, when the UE transmits uplink data using PUR, according to the prediction result (that is, determining whether carrier switching is required and the index of the target downlink carrier for switching), it selects a specific PUR resource block in the current PUR transmission opportunity to transmit the uplink data. When the network receives the uplink data transmitted by the UE, according to the PUR resource block selected by the UE, it determines which downlink carrier to use for sending the feedback information (that is, on the downlink carrier corresponding to which beam to send the corresponding feedback information).

[0089] In a typical application scenario, refer toFigure 2 and Figure 3 Assume that in the received configuration information, the multiple candidate downlink carriers associated with the uplink carrier U1 for PUR transmission are: {D1, D2, D3}. Among them, the candidate downlink carrier D1 is associated with beam 1, the candidate downlink carrier D2 is associated with beam 2, and the candidate downlink carrier D3 is associated with beam 3.

[0090] Continue to refer to Figure 2 and Figure 3 Assume that each PUR transmission occasion includes 4 PUR resource blocks: {PUR resource block 1, PUR resource block 2, PUR resource block 3, PUR resource block 4} ( Figure 2 marked as 1 to 4 in ). Among them, PUR resource block 1 and PUR resource block 2 correspond to the candidate downlink carrier D1; PUR resource block 3 corresponds to the candidate downlink carrier D2; PUR resource block 4 corresponds to the candidate downlink carrier D3. If the target downlink carrier finally predicted and determined by the UE is the candidate downlink carrier D1, it corresponds to the beam non-switching scenario; if the finally predicted and determined target downlink carrier is the candidate downlink carrier D2 or D3, it corresponds to the beam switching scenario.

[0091] Assume that the satellite is moving rapidly to the left from the perspective shown in the figure. Then, before the UE uses the uplink carrier U1 to send PUR in the coverage area of beam 1, the target beam is determined to be beam 2 according to the prediction result. Correspondingly, the UE can select PUR resource block 3 corresponding to the candidate downlink carrier D2 to send uplink data ( Figure 3 marked as "PUR" in ).

[0092] When the network receives the uplink data sent by the UE, it determines that the corresponding feedback information needs to be sent on the candidate downlink carrier D2 according to the PUR resource block 3 selected by the UE. That is, in this application scenario, the candidate downlink carrier D2 is the target downlink carrier for this PUR transmission.

[0093] Further, the UE receives the feedback information in the SS window of the candidate downlink carrier D2.

[0094] In a specific implementation, before step S101, the data transmission method described in this embodiment may include the step of: receiving configuration information, where the configuration information includes the uplink carrier for PUR transmission, the multiple candidate beams associated with the uplink carrier for PUR transmission, and the set of downlink carriers associated with each candidate beam, and the target beam belongs to the multiple candidate beams.

[0095] Specifically, the set of downlink carriers associated with the candidate beam included in the configuration information may be a subset of the set of downlink carriers actually corresponding to the candidate beam.

[0096] Further, in step S102, the step of indicating the target beam when sending the uplink data may include: carrying the index of the target beam in the uplink data sent.

[0097] Correspondingly, the network may determine the associated downlink carrier set according to the index of the target beam indicated by the UE through the uplink data. Further, the network may send feedback information on all downlink carriers in the downlink carrier set.

[0098] Further, in step S103, the UE may select a target downlink carrier from the downlink carrier set associated with the target beam; and receive the feedback information on the target downlink carrier.

[0099] For example, the UE may randomly select a downlink carrier from the downlink carrier set associated with the target beam as the target downlink carrier.

[0100] In a specific implementation, the configuration information may further include the PUR resource blocks associated with each candidate beam. That is, each PUR transmission occasion includes multiple PUR resource blocks, and each candidate beam in the configuration information is respectively associated with different PUR resource blocks.

[0101] Correspondingly, in step S102, the step of indicating the target beam when sending the uplink data may include: sending the uplink data using the PUR resource block associated with the target beam.

[0102] In response to receiving the uplink data, the network may determine the target beam indicated by the UE according to the PUR resource block transmitting the uplink data. Further, the network may send feedback information on all downlink carriers in the downlink carrier set associated with the target beam.

[0103] Further, step S103 may include the steps of: selecting a target downlink carrier from the downlink carrier set associated with the target beam; and receiving the feedback information on the target downlink carrier.

[0104] For example, the UE may randomly select a downlink carrier from the downlink carrier set associated with the target beam as the target downlink carrier.

[0105] That is to say, in this specific implementation, before the UE sends uplink data using PUR, it predicts whether beam switching will occur and the index of the target beam after sending uplink data using PUR by measuring the candidate downlink carrier or according to satellite ephemeris information and location information. When the UE sends uplink data using PUR, it selects a specific PUR resource block in the current PUR transmission opportunity according to the prediction result. When the network receives the uplink data sent by the UE, it determines which beam (i.e., the target beam) to use to send the corresponding feedback information according to the PUR resource block selected by the UE. Specifically, the network will send the corresponding feedback information on all downlink carriers associated with the target beam indicated by the UE. Correspondingly, the UE will randomly select a downlink carrier from the multiple downlink carriers associated with the target beam to receive the feedback information sent by the network.

[0106] Thus, each resource block is associated with a candidate beam, and what the UE indicates to the network is the target beam rather than a specific downlink carrier.

[0107] In a variant, the PUR resource block and the candidate beam may not be in a one-to-one correspondence, as long as there is a mapping relationship. For example, if the current network resources are relatively tight, the network can configure 1 PUR resource block corresponding to 2 candidate beams in the configuration information. If the UE uses this PUR resource block to send uplink data, the network will send feedback information on all downlink carriers of these two beams. Correspondingly, the UE randomly selects one of all downlink carriers associated with these two beams as the target downlink carrier to receive the feedback information.

[0108] In a typical application scenario, assume that the candidate beams associated with the uplink carrier U1 for PUR transmission in the configuration information are: {beam 1, beam 2, beam 3}. Each PUR transmission opportunity contains 3 PUR resource blocks, where PUR resource block 1 corresponds to beam 1 (i.e., no beam switching occurs), PUR resource block 2 corresponds to beam 2 (i.e., beam switching occurs), and PUR resource block 3 corresponds to beam 3 (i.e., beam switching occurs).

[0109] As the satellite moves rapidly, before the UE sends PUR using the uplink carrier U1 in the coverage area of beam 1, it determines the target beam as beam 2 according to the prediction result. Then the UE selects PUR resource block 2 to send uplink data and randomly selects one of the multiple downlink carriers associated with beam 2 to receive the feedback information sent by the network. Correspondingly, the network sends feedback information on all downlink carriers associated with beam 2.

[0110] Thus, the network does not need to indicate the candidate downlink carriers associated with each beam to the UE in the configuration information, thus saving signaling overhead.

[0111] In a specific implementation, before step S101, the data transmission method described in this embodiment may further include the step of receiving configuration information, where the configuration information includes an uplink carrier for PUR transmission, a first candidate downlink carrier set associated with a beam non-switching scenario, and a second candidate downlink carrier set associated with a beam switching scenario.

[0112] Specifically, each uplink carrier for PUR transmission is associated with two candidate downlink carrier sets. The first candidate downlink carrier set includes the downlink carriers corresponding to the current beam, and the second candidate downlink carrier set includes the downlink carriers not corresponding to the current beam. The current beam is the beam where the uplink carrier for PUR is not transmitted. The non-current beam is a beam other than the current beam among the multiple beams included in the cell, such as including the target beam.

[0113] That is to say, these two candidate downlink carrier sets are obtained by dividing according to the scenario to which the UE belongs. If the predicted target beam is different from the current beam when the uplink data is transmitted, it is determined to belong to the beam switching scenario, corresponding to the second candidate downlink carrier set; otherwise, if the predicted target beam is the current beam, it is determined to belong to the beam non-switching scenario, corresponding to the first candidate downlink carrier set.

[0114] Further, in step S102, the step of indicating the association information of the target beam when transmitting the uplink data may include: carrying the index of the candidate downlink carrier set associated with the target beam in the uplink data. For example, if the predicted target beam is not the current beam, carry the index of the second candidate downlink carrier set in the uplink data. Another example is that if the predicted target beam is still the current beam, carry the index of the first candidate downlink carrier set in the uplink data.

[0115] In response to receiving the uplink data, the network may send feedback information on all downlink carriers in the candidate downlink carrier set indicated in the uplink data.

[0116] Further, step S103 may include the steps of: selecting a target downlink carrier from the candidate downlink carrier set indicated when transmitting the uplink data; receiving the feedback information on the target downlink carrier.

[0117] For example, the UE may randomly select a downlink carrier from the candidate downlink carrier set as the target downlink carrier.

[0118] In a specific implementation, the configuration information may further include PUR resource blocks associated with each candidate downlink carrier set.

[0119] Specifically, the network can configure the PUR resource blocks corresponding to each candidate downlink carrier set through system broadcast information or RRC dedicated signaling. That is, each PUR transmission occasion includes multiple PUR resource blocks, and the first candidate downlink carrier set and the second candidate downlink carrier set are respectively associated with different PUR resource blocks.

[0120] Further, in step S102, the step of indicating the association information of the target beam when sending the uplink data may include: determining the scene to which it belongs according to the prediction result; selecting the PUR resource block associated with the first candidate downlink carrier set or the second candidate downlink carrier set according to the determined scene to send the uplink data.

[0121] For example, if the predicted target beam is different from the current beam when sending the uplink data, it can be determined that it belongs to the beam switching scene.

[0122] For another example, if the predicted target beam is the current beam, it can be determined that it belongs to the beam non-switching scene.

[0123] Further, step S103 may include the steps of: selecting a target downlink carrier from the candidate downlink carrier sets indicated when sending the uplink data; receiving the feedback information on the target downlink carrier.

[0124] In this specific implementation, before the UE sends uplink data using PUR, it predicts whether beam switching will occur after sending uplink data using PUR and determines the candidate downlink carrier set corresponding to the target beam by measuring the candidate downlink carriers or according to satellite ephemeris information and location information. When the UE sends uplink data using PUR, it selects a specific PUR resource block in the current PUR transmission occasion according to the prediction result to send the uplink data. When the network receives the uplink data sent by the UE, it determines which candidate downlink carrier set to use to send the corresponding feedback information according to the PUR resource block selected by the UE. The UE will randomly select a downlink carrier from the candidate downlink carrier set corresponding to the target beam to receive the feedback information sent by the network.

[0125] In a typical application scenario, assume that the uplink carrier U1 for PUR transmission is in beam 1, and the two candidate downlink carrier sets (the set records the indexes of each downlink carrier) associated with the uplink carrier U1 are: Set1 = {C1, C2}, Set2 = {C3, C4, C5, C6}. Among them, the first candidate downlink carrier set Set1 is the downlink carrier corresponding to the beam where the uplink carrier U1 is located, and the second candidate downlink carrier set Set2 is the downlink carrier not corresponding to the beam where the uplink carrier U1 is located.

[0126] Assume that each PUR transmission opportunity contains 2 PUR resource blocks, where PUR resource block 1 corresponds to the first candidate downlink carrier set Set1, and PUR resource block 2 corresponds to the second candidate downlink carrier set Set2.

[0127] With the rapid movement of the satellite, before the UE sends the PUR using the uplink carrier U1 in the coverage area of beam 1, it determines that a beam handover will occur after sending the PUR according to the prediction result. Then the UE selects PUR resource block 2 to send uplink data and randomly selects a downlink carrier in the second candidate downlink carrier set Set2 to receive the feedback information sent by the network. Correspondingly, the network will send the feedback information on all downlink carriers in the second candidate downlink carrier set Set2.

[0128] If the prediction result indicates that no beam handover will occur after sending the PUR. Then the UE selects PUR resource block 1 to send uplink data and randomly selects a downlink carrier in the first candidate downlink carrier set Set1 to receive the feedback information sent by the network. Correspondingly, the network will send the feedback information on all downlink carriers in the first candidate downlink carrier set Set1.

[0129] In a specific implementation, the configuration information can be carried by system broadcast information or RRC dedicated signaling.

[0130] As above, by adopting this implementation solution, the UE side can ensure the data transmission effectiveness in the non-terrestrial network scenario, and ensure that the UE can successfully receive the feedback information after sending the PUR uplink data by indicating the receiving beam (i.e., the target beam) of the PUR SS. Specifically, before sending the PUR uplink data, predict the target beam when receiving the feedback information in the future. Further, actively inform the network of the information related to the target beam when sending the uplink data, so as to indicate the network to send the feedback information on the target downlink carrier associated with the target beam. Thus, the UE can make a prediction before sending the uplink data and indicate the prediction result in the uplink data, so as to successfully receive the feedback information in the target beam.

[0131] Figure 4 It is a schematic structural diagram of a data transmission device according to the first embodiment of the present invention. Those skilled in the art understand that the data transmission device 4 described in this embodiment can be used to implement the Figures 1 to 3 method technical solutions described in the above

[0132] Specifically, refer to Figure 4, the data transmission device 4 in this embodiment may include: a prediction module 41, configured to predict the target beam when receiving feedback information before sending uplink data using PUR; an indication module 42, configured to indicate the target beam or the associated information of the target beam when sending the uplink data; a receiving module 43, configured to receive the feedback information on the target downlink carrier associated with the target beam.

[0133] For more content about the working principle and working mode of the data transmission device 4, reference can be made to the relevant description in the above Figures 1 to 3 and will not be elaborated here.

[0134] In a specific implementation, the above data transmission device 4 may correspond to a chip with data transmission function in a user equipment, or a chip with data processing function, such as a System-On-a-Chip (SOC), a baseband chip, etc.; or a chip module including a chip with data transmission function in a user equipment; or a chip module with a chip having data processing function, or a user equipment.

[0135] Figure 5 is a flowchart of a data transmission method according to the second embodiment of the present invention.

[0136] This implementation scheme can be applied to a satellite communication scenario, such as an Internet of Things over Non-Terrestrial Networks (IOTNTN) scenario (also known as a satellite Internet of Things scenario).

[0137] This implementation scheme can be executed by the network side, such as by a network device on the network side. For example, the network device may include a base station.

[0138] In a specific implementation, the data transmission method provided in the following steps S501 to S502 can be executed by a chip with data transmission function in the network device, or by a baseband chip in the network device.

[0139] Specifically, referring to Figure 5 , the data transmission method in this embodiment may include the following steps:

[0140] Step S501, receive the uplink data sent using PUR, and obtain the target beam or the associated information of the target beam indicated by the user equipment when sending the uplink data;

[0141] Step S502, send feedback information on the target downlink carrier associated with the target beam.

[0142] Those skilled in the art understand that steps S501 to S502 can be regarded as corresponding to the above Figures 1 to 3The execution steps corresponding to steps S101 to S103 in the illustrated embodiment are complementary in terms of their specific implementation principles and logic. Therefore, the explanations of the terms involved in this embodiment can be referred to Figures 1 to 3 in the relevant descriptions of the illustrated embodiment, which will not be elaborated here.

[0143] In a specific implementation, before step S501, the data transmission method described in this embodiment may further include the step of sending configuration information, where the configuration information includes the uplink carrier for PUR transmission, a plurality of candidate downlink carriers associated with the uplink carrier for PUR transmission, and the association relationship between the candidate downlink carriers and the beams.

[0144] Furthermore, the association information of the target beam may include the index of the target downlink carrier, and the association information is carried in the uplink data. In response to receiving the uplink data, the network can obtain the index of the target downlink carrier indicated by the UE this time, and then send feedback information on the target downlink carrier.

[0145] In a specific implementation, the configuration information may further include the PUR resource blocks associated with each candidate downlink carrier.

[0146] Specifically, the association information of the target beam may include the target downlink carrier. And the UE may not directly carry the association information in the uplink data, but implicitly indicate it through the PUR resource carrying the uplink data. Thereby, signaling overhead can be saved.

[0147] Correspondingly, step S501 may include the step of determining the target downlink carrier according to the PUR resource block used for sending the uplink data.

[0148] In a specific implementation, before step S501, the data transmission method described in this embodiment may further include the step of sending configuration information, where the configuration information includes the uplink carrier for PUR transmission, a plurality of candidate beams associated with the uplink carrier for PUR transmission, and a set of downlink carriers associated with each candidate beam, and the target beam belongs to the plurality of candidate beams.

[0149] Furthermore, the index of the target beam may be carried in the uplink data. In response to receiving the uplink data, the network can obtain the index of the target beam indicated by the UE this time.

[0150] Correspondingly, step S502 may include the step of sending feedback information on all downlink carriers in the set of downlink carriers associated with the target beam. That is, in this specific implementation, all downlink carriers in the set of downlink carriers associated with the target beam are determined as the target downlink carriers.

[0151] In a specific implementation, the configuration information may further include PUR resource blocks associated with each candidate beam.

[0152] Specifically, step S501 may include the steps of: determining the target beam according to the PUR resource block used for sending the uplink data.

[0153] Furthermore, the target downlink carrier is all downlink carriers in the downlink carrier set associated with the target beam. That is, after determining the target beam through the PUR resource block carrying the uplink data, the network sends feedback information on all downlink carriers associated with the target beam.

[0154] In a specific implementation, before step S501, the data transmission method of this embodiment may further include: sending configuration information, where the configuration information includes an uplink carrier for PUR transmission, a first candidate downlink carrier set associated with a beam non-switching scenario, and a second candidate downlink carrier set associated with a beam switching scenario.

[0155] Furthermore, the uplink data may carry an index of the candidate downlink carrier set associated with the target beam. In response to receiving the uplink data, the network may know the candidate downlink carrier set for which feedback information needs to be sent.

[0156] Correspondingly, step S502 may include the steps of: sending feedback information on all downlink carriers in the candidate downlink carrier set indicated by the uplink data at the UE.

[0157] In a specific implementation, the configuration information may further include PUR resource blocks associated with each candidate downlink carrier set.

[0158] Specifically, the association information of the target beam may include a candidate downlink carrier set.

[0159] Correspondingly, step S501 may include: determining the candidate downlink carrier set according to the PUR resource block used for sending the uplink data, where the candidate downlink carrier set is selected from the first candidate downlink carrier set and the second candidate downlink carrier set.

[0160] Furthermore, the target downlink carriers for sending feedback information in step S502 are all downlink carriers in the candidate downlink carrier set indicated by the association information.

[0161] In a specific implementation, the configuration information is carried by system broadcast information or RRC dedicated signaling.

[0162] As described above, by adopting this implementation solution, the network side can ensure the data transmission effectiveness in the non-terrestrial network scenario, and ensure that the UE can successfully receive the feedback information after sending the PUR uplink data by indicating the receiving beam (i.e., the target beam) of the PUR SS. Specifically, the relevant information of the target beam is carried explicitly or implicitly in the received uplink data, enabling the network to know the actual target beam where the UE receives the feedback information. Further, the feedback information is sent on the target downlink carrier associated with the target beam indicated by the UE to ensure that the UE correctly receives the feedback information.

[0163] Figure 6 FIG. 4 is a schematic structural diagram of a data transmission device according to the second embodiment of the present invention. Those skilled in the art understand that the data transmission device 6 described in this embodiment can be used to implement the above Figure 5 method technical solutions described in the above embodiments.

[0164] Specifically, referring to Figure 6 , the data transmission device 6 described in this embodiment may include: a receiving module 61, configured to receive the uplink data sent using PUR and obtain the target beam or the associated information of the target beam indicated by the user equipment when sending the uplink data; a sending module 62, configured to send the feedback information on the target downlink carrier associated with the target beam.

[0165] For more content about the working principle and working mode of the data transmission device 6, reference can be made to the relevant descriptions in the above Figure 5 and will not be elaborated here.

[0166] In a specific implementation, the above data transmission device 6 may correspond to a chip with a data transmission function in a network device, or correspond to a chip with a data processing function, such as a System-On-a-Chip (SOC for short), a baseband chip, etc.; or correspond to a chip module including a chip with a data transmission function in a network device; or correspond to a chip module with a data processing function, or correspond to a network device.

[0167] In a specific implementation, for each module / unit included in the various devices and products described in the above embodiments, it may be a software module / unit, a hardware module / unit, or may also be partially a software module / unit and partially a hardware module / unit.

[0168] For example, for each device and product applied to or integrated into a chip, each module / unit included therein can be implemented in the form of hardware such as a circuit, or at least some of the modules / units can be implemented in the form of a software program that runs on a processor integrated inside the chip, and the remaining (if any) part of the modules / units can be implemented in the form of hardware such as a circuit; for each device and product applied to or integrated into a chip module, each module / unit included therein can be implemented in the form of hardware such as a circuit, and different modules / units can be located in the same component (such as a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules / units can be implemented in the form of a software program that runs on a processor integrated inside the chip module, and the remaining (if any) part of the modules / units can be implemented in the form of hardware such as a circuit; for each device and product applied to or integrated into a terminal, each module / unit included therein can be implemented in the form of hardware such as a circuit, and different modules / units can be located in the same component (such as a chip, a circuit module, etc.) or different components inside the terminal, or at least some of the modules / units can be implemented in the form of a software program that runs on a processor integrated inside the terminal, and the remaining (if any) part of the modules / units can be implemented in the form of hardware such as a circuit.

[0169] An embodiment of the present invention further provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored. When the computer program is run by a processor, it executes the steps of the data transmission method provided in the corresponding embodiment above. Or, when the computer program is run by a processor, it executes the steps of the data transmission method provided in the corresponding embodiment above. Figures 1 to 3 An embodiment of the present invention further provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored. When the computer program is run by a processor, it executes the steps of the data transmission method provided in the corresponding embodiment above. Or, when the computer program is run by a processor, it executes the steps of the data transmission method provided in the corresponding embodiment above. Figure 5 An embodiment of the present invention further provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored. When the computer program is run by a processor, it executes the steps of the data transmission method provided in the corresponding embodiment above.

[0170] An embodiment of the present invention further provides another data transmission device, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes the steps of the data transmission method provided in the corresponding embodiment above. Figures 1 to 3 An embodiment of the present invention further provides another data transmission device, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes the steps of the data transmission method provided in the corresponding embodiment above. For example, the data transmission device may include a user equipment.

[0171] An embodiment of the present invention further provides another data transmission device, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes the steps of the data transmission method provided in the corresponding embodiment above. Figure 5 An embodiment of the present invention further provides another data transmission device, including a memory and a processor. A computer program that can run on the processor is stored on the memory. When the processor runs the computer program, it executes the steps of the data transmission method provided in the corresponding embodiment above. For example, the data transmission device may include a network device.

[0172] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A data transmission method, characterized in that, Comprising: Before sending uplink data using PUR, predicting the target beam where the received feedback information is located; Indicating the target beam or the associated information of the target beam when sending the uplink data; Receiving the feedback information on the target downlink carrier associated with the target beam; Further comprising: Receiving configuration information, where the configuration information includes the uplink carrier for PUR transmission, multiple candidate downlink carriers associated with the uplink carrier for PUR transmission, and the association relationship between the candidate downlink carriers and the beams; or Receiving configuration information, where the configuration information includes the uplink carrier for PUR transmission, multiple candidate beams associated with the uplink carrier for PUR transmission, and the set of downlink carriers associated with each candidate beam, and the target beam belongs to the multiple candidate beams; or Receiving configuration information, where the configuration information includes the uplink carrier for PUR transmission, the first set of candidate downlink carriers associated with the beam non-switching scenario, and the second set of candidate downlink carriers associated with the beam switching scenario.

2. The data transmission method according to claim 1, wherein The configuration information further includes the PUR resource blocks associated with each candidate downlink carrier.

3. The data transmission method according to claim 2, characterized in that The associated information of the target beam includes the target downlink carrier, and the indicating the associated information of the target beam when sending the uplink data includes: Determining the candidate downlink carrier associated with the target beam among the multiple candidate downlink carriers as the target downlink carrier; Sending the uplink data using the PUR resource block associated with the target downlink carrier.

4. The data transmission method according to claim 1, characterized in that, The associated information of the target beam includes the index of the target downlink carrier, and the indicating the associated information of the target beam when sending the uplink data includes: Determining the candidate downlink carrier associated with the target beam among the multiple candidate downlink carriers as the target downlink carrier; Carrying the associated information in the uplink data being sent.

5. The data transmission method according to claim 1, wherein The configuration information further includes the PUR resource blocks associated with each candidate beam.

6. The data transmission method according to claim 5, characterized in that, The indicating the target beam when sending the uplink data includes: Sending the uplink data using the PUR resource block associated with the target beam.

7. The data transmission method according to claim 1 or 5 or 6, characterized in that The receiving the feedback information on the target downlink carrier associated with the target beam includes: Selecting the target downlink carrier from the set of downlink carriers associated with the target beam; Receiving the feedback information on the target downlink carrier.

8. The data transmission method according to claim 1, wherein The indicating the target beam when sending the uplink data includes: Carrying the index of the target beam in the uplink data being sent.

9. The data transmission method according to claim 1, wherein The configuration information further includes the PUR resource blocks associated with each set of candidate downlink carriers.

10. The data transmission method according to claim 9, wherein The associated information of the target beam includes the set of candidate downlink carriers, and the indicating the associated information of the target beam when sending the uplink data includes: Determining the belonging scenario according to the prediction result; Selecting the PUR resource block associated with the first set of candidate downlink carriers or the second set of candidate downlink carriers according to the determined scenario to send the uplink data.

11. The data transmission method according to claim 10, characterized in that, The determining the belonging scenario according to the prediction result includes: If the predicted target beam is different from the current beam when sending the uplink data, determining that it belongs to the beam switching scenario; otherwise, If the predicted target beam is the current beam, it is determined that it belongs to the beam non-switching scenario.

12. The data transmission method according to claim 1 or 9 or 10 or 11, characterized in that The receiving the feedback information on the target downlink carrier associated with the target beam includes: Selecting a target downlink carrier from the set of candidate downlink carriers indicated when sending the uplink data; Receiving the feedback information on the target downlink carrier.

13. The data transmission method according to claim 1, wherein The configuration information is carried by system broadcast information or RRC dedicated signaling.

14. The data transmission method according to claim 1, wherein The predicted target beam when receiving the feedback information includes: Measuring the channel quality of multiple candidate downlink carriers; Predicting the target beam when receiving the feedback information according to the measurement result.

15. The data transmission method according to claim 1, wherein The predicted target beam when receiving the feedback information includes: Predicting the target beam when receiving the feedback information according to the positioning information.

16. A data transmission device, characterized in that, Includes: A prediction module, configured to predict the target beam when receiving the feedback information before sending uplink data using PUR; An indication module, configured to indicate the target beam or the associated information of the target beam when sending the uplink data; A receiving module, configured to receive the feedback information on the target downlink carrier associated with the target beam; The data transmission device further performs the steps of: Receiving configuration information, where the configuration information includes the uplink carrier for PUR transmission, the multiple candidate downlink carriers associated with the uplink carrier for PUR transmission, and the association relationship between the candidate downlink carriers and the beams; or Receiving configuration information, where the configuration information includes the uplink carrier for PUR transmission, the multiple candidate beams associated with the uplink carrier for PUR transmission, and the set of downlink carriers associated with each candidate beam, and the target beam belongs to the multiple candidate beams; or Receiving configuration information, where the configuration information includes the uplink carrier for PUR transmission, the first set of candidate downlink carriers associated with the beam non-switching scenario, and the second set of candidate downlink carriers associated with the beam switching scenario.

17. A data transmission method, characterized in that Includes: Receiving the uplink data sent using PUR, and obtaining the target beam or the associated information of the target beam indicated by the user equipment when sending the uplink data; Sending the feedback information on the target downlink carrier associated with the target beam; Further includes: Sending configuration information, where the configuration information includes the uplink carrier for PUR transmission, the multiple candidate downlink carriers associated with the uplink carrier for PUR transmission, and the association relationship between the candidate downlink carriers and the beams; or Sending configuration information, where the configuration information includes the uplink carrier for PUR transmission, the multiple candidate beams associated with the uplink carrier for PUR transmission, and the set of downlink carriers associated with each candidate beam, and the target beam belongs to the multiple candidate beams; or Sending configuration information, where the configuration information includes the uplink carrier for PUR transmission, the first set of candidate downlink carriers associated with the beam non-switching scenario, and the second set of candidate downlink carriers associated with the beam switching scenario.

18. The data transmission method according to claim 17, wherein The configuration information further includes the PUR resource blocks associated with each candidate downlink carrier.

19. The data transmission method according to claim 18, characterized in that, The associated information of the target beam includes the target downlink carrier, and obtaining the associated information of the target beam indicated by the user equipment when transmitting the uplink data includes: Determining the target downlink carrier according to the PUR resource block used for transmitting the uplink data.

20. The data transmission method according to claim 17, wherein The associated information of the target beam includes the index of the target downlink carrier, and the associated information is carried in the uplink data.

21. The data transmission method according to claim 17, wherein The configuration information further includes the PUR resource blocks associated with each candidate beam.

22. The data transmission method according to claim 21, wherein Obtaining the target beam indicated by the user equipment when transmitting the uplink data includes: Determining the target beam according to the PUR resource block used for transmitting the uplink data.

23. The data transmission method according to claim 17 or 21 or 22, characterized in that, The target downlink carrier is all downlink carriers in the downlink carrier set associated with the target beam.

24. The data transmission method according to claim 17, wherein The index of the target beam is carried in the uplink data.

25. The data transmission method according to claim 17, wherein The configuration information further includes the PUR resource blocks associated with each candidate downlink carrier set.

26. The data transmission method according to claim 25, wherein The associated information of the target beam includes a candidate downlink carrier set, and obtaining the associated information of the target beam indicated by the user equipment when transmitting the uplink data includes: Determining the candidate downlink carrier set according to the PUR resource block used for transmitting the uplink data, where the candidate downlink carrier set is selected from the first candidate downlink carrier set and the second candidate downlink carrier set.

27. The data transmission method according to claim 17 or 25 or 26, characterized in that The target downlink carrier is all downlink carriers in the candidate downlink carrier set indicated by the associated information.

28. The data transmission method according to claim 17, wherein The configuration information is carried by system broadcast information or RRC dedicated signaling.

29. A data transmission device, characterized in that, Including: A receiving module, configured to receive uplink data transmitted using PUR and obtain the target beam or the associated information of the target beam indicated by the user equipment when transmitting the uplink data; A transmitting module, configured to transmit feedback information on the target downlink carrier associated with the target beam; The data transmission device further performs the steps of: Transmitting configuration information, where the configuration information includes the uplink carrier for PUR transmission, a plurality of candidate downlink carriers associated with the uplink carrier for PUR transmission, and the association relationship between the candidate downlink carriers and the beams; or Transmitting configuration information, where the configuration information includes the uplink carrier for PUR transmission, a plurality of candidate beams associated with the uplink carrier for PUR transmission, and the downlink carrier sets associated with each candidate beam, and the target beam belongs to the plurality of candidate beams; or Transmitting configuration information, where the configuration information includes the uplink carrier for PUR transmission, the first candidate downlink carrier set associated with the beam non-switching scenario, and the second candidate downlink carrier set associated with the beam switching scenario.

30. A computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has a computer program stored thereon, characterized in that When the computer program is run by a processor, it executes the steps of the method according to any one of claims 1 to 15 or any one of claims 17 to 28.

31. A data transmission device, comprising a memory and a processor, wherein a computer program that can run on the processor is stored on the memory, and is characterized in that When the processor runs the computer program, it executes the steps of the method according to any one of claims 1 to 15 or any one of claims 17 to 28.

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