CN117955605A

CN117955605A - Data transmission method, device and storage medium

Info

Publication number: CN117955605A
Application number: CN202410039773.4A
Authority: CN
Inventors: 苟伟; 韩祥辉; 魏兴光; 石靖; 刘星
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2024-01-09
Filing date: 2024-01-09
Publication date: 2024-04-30

Abstract

The disclosure provides a data transmission method, a data transmission device and a storage medium, relates to the technical field of communication, and is used for improving the efficiency of HARQ-ACK feedback. The method comprises the following steps: the first node sends HARQ-ACK feedback information to the second node, wherein the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding of the first physical shared channel.

Description

Data transmission method, device and storage medium

Technical Field

The disclosure relates to the field of communication technologies, and in particular, to a data transmission method, a data transmission device and a storage medium.

Background

In the prior art, in order to determine whether a terminal correctly receives a downlink transmission, a base station requests the terminal to feed back hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback information of the downlink transmission to the base station. Such HARQ-ACK feedback mechanisms are an integral part of wireless communications, and are particularly critical in systems such as long term evolution (long term evolution, LTE) and fifth generation mobile communication technologies (5 th-generation mobile communication technology, 5G). For example, if a downlink transmission is correctly received, the HARQ-ACK feedback information corresponding to the downlink transmission is an Acknowledgement (ACK), otherwise, the HARQ-ACK feedback information corresponding to the downlink transmission is a negative acknowledgement (negative acknowledgement, NACK).

At present, the terminal decodes a physical shared channel and provides corresponding HARQ-ACK feedback information to the base station, and this process requires a certain processing time, which also makes the time of HARQ-ACK feedback too long, and reduces the efficiency of HARQ-ACK feedback. Therefore, a data transmission method is needed to improve the efficiency of HARQ-ACK feedback.

Disclosure of Invention

The embodiment of the disclosure provides a data transmission method, a data transmission device and a storage medium, which are used for improving the efficiency of HARQ-ACK feedback and further improving the data transmission efficiency. The technical scheme of the present disclosure is as follows:

In one aspect, a data transmission method is provided and applied to a first node, and the method includes:

And transmitting HARQ-ACK feedback information, wherein the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is the HARQ-ACK feedback information determined before decoding of the first physical shared channel.

In another aspect, a data transmission method is provided, applied to a second node, and the method includes:

And receiving HARQ-ACK feedback information, wherein the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is the HARQ-ACK feedback information determined before decoding of the first physical shared channel.

In yet another aspect, a data transmission apparatus is provided, applied to a first node, the apparatus including:

And the communication module is used for sending HARQ-ACK feedback information, wherein the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to the first physical shared channel, and the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding of the first physical shared channel.

In yet another aspect, a communication apparatus is provided for use with a second node, the apparatus comprising:

And the communication module is used for receiving HARQ-ACK feedback information, wherein the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding of the first physical shared channel.

In yet another aspect, there is provided a communication apparatus comprising: a memory and a processor; the memory is coupled to the processor; the memory is used for storing computer program instructions executable by the processor; the processor, when executing the computer program instructions, implements the data transmission method of any of the embodiments described above.

In yet another aspect, a computer readable storage medium is provided, on which computer program instructions are stored, which when run on a computer (e.g. a communication device or a signal transmission device) implement the data transmission method of any of the above embodiments.

In a further aspect, a computer program product is provided, comprising computer program instructions which, when executed, implement the data transmission method of any of the embodiments described above.

In the technical scheme provided by the embodiment of the disclosure, a first node sends HARQ-ACK feedback information to a second node, wherein the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding of the first physical shared channel. The corresponding HARQ-ACK feedback information can be obtained without executing the decoding of the first physical shared channel, and the HARQ-ACK feedback information is provided for the second node, so that the HARQ-ACK information feedback time is shortened, and the HARQ-ACK feedback efficiency is improved.

Drawings

Fig. 1 is a schematic architecture diagram of a communication system according to an embodiment of the disclosure;

Fig. 2 is an interaction flow chart of a data transmission method according to an embodiment of the disclosure;

fig. 3 is a schematic structural diagram of a data transmission device according to an embodiment of the disclosure;

Fig. 4 is a schematic structural diagram of another data transmission device according to an embodiment of the disclosure;

Fig. 5 is a schematic structural diagram of a communication device according to an embodiment of the disclosure.

Detailed Description

The following description of the technical solutions in the embodiments of the present disclosure will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present disclosure, and it is apparent that the described embodiments are only some embodiments of the present disclosure, not all embodiments. Based on the embodiments in this disclosure, all other embodiments that a person of ordinary skill in the art would obtain without making any inventive effort are within the scope of protection of this disclosure.

In the description of the present disclosure, unless otherwise indicated, "/" means "or" and, for example, a/B may mean a or B. "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. Furthermore, "at least one" means one or more, and "a plurality" means two or more. The terms "first," "second," and the like do not limit the number and order of execution, and the terms "first," "second," and the like do not necessarily differ.

It is noted that in this disclosure, words such as "exemplary" or "such as" are used to mean serving as examples, illustrations, or descriptions. Any embodiment or design described herein as "exemplary" or "e.g." should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

In the prior art, in order to determine whether a terminal correctly receives downlink transmission (including a physical downlink shared channel and a physical downlink control channel), a base station requests the terminal to feed back HARQ-ACK feedback information of the downlink transmission to the base station. For example, if the downlink transmission is received correctly, the HARQ-ACK information is ACK, otherwise the HARQ-ACK information is NACK.

In the prior art, the terminal needs to decode a physical downlink shared channel (physical downlink SHARED CHANNEL, PDSCH) and provide corresponding HARQ-ACK feedback information to the base station, which requires a certain processing time. For example, a time period t is required from the end of PDSCH to the end of HARQ-ACK feedback information transmission, and this time period t is related to not only the decoding capability of the terminal but also the frame structure of the communication system. For example, in a time division duplex (time division duplex, TDD) frame structure, after the terminal receives the PDSCH, it needs to obtain an uplink time slot to provide HARQ-ACK feedback information to the base station, so a longer time is needed.

The HARQ-ACK feedback mechanism currently existing is described below.

1. HARQ-ACK codebook mechanism: a1 bit (bit) HARQ-ACK corresponds to one PDSCH or (physical downlink control channel, PDCCH) (PDCCH required to feedback HARQ-ACK, e.g., PDCCH RELEASE). In the new radio, NR, in order to reduce the number of HARQ-ACK uplink control channel (physical uplink control channel, PUCCH) transmissions, HARQ-ACK codebook techniques are introduced. For example, the base station and terminal agree on: if the HARQ-ACK information bits of one or more PDSCH of the terminal are respectively indicated to be transmitted in the same slot (slot), the HARQ-ACK feedback information bits form a HARQ-ACK codebook, and the terminal transmits the HARQ-ACK codebook through a PUCCH resource in the slot. By adopting the mechanism, the times of HARQ-ACK PUCCH transmission can be effectively reduced, so that the efficiency of the system is improved. But this mechanism also has drawbacks, for example, in that some HARQ-ACK feedback information cannot be transmitted as early.

2. HARQ-ACK bundling mechanism: the mechanism is that a plurality of HARQ-ACK feedback information bits are bundled into one bit to be processed through AND operation, so that the number of the HARQ-ACK feedback information bits is reduced, and PUCCH resources can be reduced. But this mechanism is all done by a predetermined configuration. For example, if a terminal is configured to perform the mechanism, the terminal always performs bundling of a plurality of HARQ-ACK feedback information bits to 1bit in subsequent HARQ-ACK feedback information transmission, and then transmits the 1bit to a base station. Clearly, the drawbacks of this mechanism are also apparent, for example, if a NACK occurs, the PDSCH corresponding to the multiple HARQ-ACK feedback information bits needs to be retransmitted regardless of whether the PDSCH is received correctly. Eventually, the efficiency of the system will decrease due to the additional PDSCHs retransmissions.

3. NACK only feedback mechanism: the mechanism provides corresponding NACK information to the base station if the terminal does not correctly receive one PDSCH, otherwise, the terminal does not provide HARQ-ACK feedback information. This mechanism can reduce the number of HARQ-ACK feedback information transmissions because the probability that one PDSCH is decoded correctly is high.

4. Enable/disable HARQ-ACK feedback mechanism: the base station and the terminal determine whether to feed back HARQ-ACK feedback information for one PDSCH through radio resource control (radio resource control, RRC) configuration or downlink control information (downlink control information, DCI) indication. That is, the base station may configure or indicate that HARQ-ACK feedback information is not provided for one PDSCH so as to reduce the number of HARQ-ACK feedback information bits, even the number of HARQ-ACK feedback information transmissions. This mechanism presents a certain reliability risk, e.g. the base station instructs the terminal not to provide HARQ-ACK feedback information as one PDSCH, but the terminal does not receive the PDSCH correctly, which, once present, cannot be retransmitted at the physical layer.

Typically, the correct rate for one PDSCH transmission is above 90%, i.e. in most cases the terminal has actually received the PDSCH correctly, but still needs to provide HARQ-ACK feedback information to the base station, obviously considering that it is necessary to reduce unnecessary HARQ-ACK feedback information transmissions.

Based on this, the disclosure provides a data transmission method, where a first node sends HARQ-ACK feedback information to a second node, where the HARQ-ACK feedback information includes at least first HARQ-ACK feedback information corresponding to a first physical shared channel, where the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding of the first physical shared channel. The corresponding HARQ-ACK feedback information can be obtained without executing the decoding of the first physical shared channel, and the HARQ-ACK feedback information is provided for the second node, so that the HARQ-ACK information feedback time is shortened, and the HARQ-ACK feedback efficiency is improved.

The data transmission method provided by the embodiment of the disclosure can be applied to systems with various communication modes. For example, the system to which the data transmission method provided by the embodiments of the present disclosure may be applicable includes, but is not limited to, an LTE system, various versions based on LTE evolution, a 5G system, and other communication systems. In addition, the data transmission method provided by the embodiment of the disclosure may also be applicable to future-oriented communication systems (e.g., 6G communication systems) and the like.

The network architecture of the mobile communication network (including but not limited to 3g,4g,5g and future mobile communication networks) in embodiments of the present disclosure may include at least a first communication node and a second communication node. It should be appreciated that in this example, the first communication node may be a network-side device (including, but not limited to, a base station, for example) and the second communication node may be a terminal-side device (including, but not limited to, a terminal, for example) in the downlink. Of course, in the uplink, the first communication node may be a terminal-side device, and the second communication node may be a network-side device. In the case where both communication nodes are device-to-device communications, both the first communication node and the second communication node may be base stations or terminals. The first communication node and the second communication node may be abbreviated as first node and second node, respectively.

Illustratively, taking the first communication node as a terminal and the second communication node as a base station as an example, as shown in fig. 1, a communication system provided in an embodiment of the disclosure includes a terminal 10 and a base station 20. The terminal 10 and the base station 20 may be one or more, and are not limited in number.

In some embodiments, the base station 20 provides wireless access services for the terminal 10. One base station 20 provides at least one service coverage area (also referred to as a cell). The terminal 10 entering the area may communicate with the base station 20 through wireless signals to thereby receive the wireless access service provided by the base station 20.

In some embodiments, the base station may be a long term evolution (long term evolution, LTE), a base station or evolved base station (evolutional node B, eNB or eNodeB) in long term evolution enhancement (long term evolution advanced, LTEA), a base station device in a 5G network, or a base station in a future communication system, etc., which may include various macro base stations, micro base stations, home base stations, wireless remotes, reconfigurable intelligent surfaces (reconfigurable intelligent surfaces, RISs), routers, relays, TRP, wireless fidelity (WIRELESS FIDELITY, WIFI) devices, etc., various network side devices.

In some embodiments, the terminal may be a device with wireless transceiving functionality. The terminals may be mobile phones (mobile phones), tablet computers (Pad), computers with wireless transceiving functionality, virtual Reality (VR) terminals, augmented reality (augmented reality, AR) terminals, wireless terminals in industrial control (industrial control), wireless terminals in unmanned (SELF DRIVING), wireless terminals in telemedicine (remote media), wireless terminals in smart grid (SMART GRID), wireless terminals in transportation security (transportation safety), wireless terminals in smart city (SMART CITY), wireless terminals in smart home (smart home), etc. Embodiments of the present disclosure are not limited to application scenarios. A terminal may also be referred to as a User, user Equipment (UE), access terminal, UE unit, UE station, mobile station, remote terminal, mobile device, UE terminal, wireless communication device, UE agent, UE device, or the like, as embodiments of the present disclosure are not limited in this respect.

It should be noted that fig. 1 is merely an exemplary frame diagram, the number of devices included in fig. 1 is not limited, and names of the respective devices are not limited, and the communication system may include other devices, such as core network devices, in addition to the devices shown in fig. 1.

The application scenario of the embodiments of the present disclosure is not limited. The system architecture and the service scenario described in the embodiments of the present disclosure are for more clearly describing the technical solutions of the embodiments of the present disclosure, and do not constitute a limitation on the technical solutions provided by the embodiments of the present disclosure, and those skilled in the art can know that, with the evolution of the network architecture and the appearance of a new service scenario, the technical solutions provided by the embodiments of the present disclosure are applicable to similar technical problems.

The embodiment of the disclosure provides a data transmission method. As shown in fig. 2, the method comprises the steps of:

S101, a first node sends HARQ-ACK feedback information to a second node; correspondingly, the second node receives HARQ-ACK feedback information sent by the first node; the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to a first physical shared channel, wherein the first HARQ-ACK feedback information is determined before decoding of the first physical shared channel.

The first HARQ-ACK feedback information may also have other names, such as predicted HARQ-ACK feedback information.

In some embodiments, the physical shared channel includes a Physical Uplink SHARED CHANNEL (PUSCH) and a PDSCH.

In some embodiments, the first HARQ-ACK feedback information, when ACK, indicates that the first physical shared channel is to be decoded correctly, or decoded correctly; the first HARQ-ACK information being a NACK indicates that the first physical shared channel will not be decoded correctly or not.

It may be appreciated that the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before the first physical shared channel is decoded, that is, the first HARQ-ACK feedback information is predicted HARQ-ACK feedback information, and the first HARQ-ACK feedback information may not be coincident with the actual PDSCH decoding result. Since it is not necessary to perform decoding of the first physical shared channel, it can be provided to the base station as early as possible. The interval between the end position of the first physical shared channel and the corresponding start position of the first HARQ-ACK feedback information can be reduced with respect to the related mechanism because no additional time is required to complete decoding the first physical shared channel. That is, fast HARQ-ACK feedback can be achieved using the first HARQ-ACK feedback information.

In some embodiments, the first HARQ-ACK feedback information is determined based on at least one of the following parameters:

A first probability that the first physical shared channel determined based on the demodulation reference signal DMRS of the first physical shared channel is correctly decoded;

A second probability that the first physical shared channel is erroneously decoded, which is determined based on a demodulation reference signal DMRS of the first physical shared channel;

A third probability that the first physical shared channel is correctly decoded based on the DMRS of the physical control channel to which the first physical shared channel corresponds;

A fourth probability of determining a probability that the first physical shared channel is erroneously decoded based on the DMRS of the physical control channel corresponding to the first physical shared channel;

A first preset number of channel quality information before a first physical shared channel;

modulation and coding scheme (modulation and coding scheme, MCS) information corresponding to the first physical shared channel;

A signaling indication of the second node;

channel quality information corresponding to the first physical shared channel;

MCS fitness information corresponding to the first physical shared channel, where the MCS fitness information refers to a probability that the first physical shared channel is correctly and/or incorrectly decoded based on the MCS information corresponding to the first physical shared channel;

decoding conditions of a second preset number of physical shared channels before the first physical shared channel;

Decoding conditions of the physical shared channel within a first preset duration before the first physical shared channel;

channel quality information within a second preset time period before the first physical shared channel.

Wherein, the physical control channel includes PUCCH and PDCCH.

In some embodiments, the first preset number, the second preset number, the first preset duration, or the second preset duration may be configured by the second node and issued to the first node through RRC signaling or DCI; or autonomously by the first node.

In some embodiments, the MCS information corresponding to the first physical shared channel includes at least one of: modulation scheme, code rate, spectral efficiency, transport block size.

The MCS information may be an MCS index, based on which at least one of the following information for PDSCH may be obtained: modulation mode, code rate, spectrum efficiency and the size of a transmission block corresponding to a physical shared channel.

In some embodiments, determining the first HARQ-ACK feedback information based on the probability that the first physical shared channel was correctly decoded and/or the probability that the first physical shared channel was incorrectly decoded is implemented as: and determining the first HARQ-ACK feedback information based on the comparison of the probability of the first physical shared channel being correctly decoded with a first preset threshold and/or the comparison of the probability of the first physical shared channel being incorrectly decoded with a second preset threshold.

The probability of the first physical shared channel being correctly decoded and/or the probability of the first physical shared channel being incorrectly decoded may be determined based on a demodulation reference signal DMRS of the first physical shared channel or based on a DMRS of a physical control channel corresponding to the first physical shared channel.

For example, the probability of the first physical shared channel being correctly decoded is greater than a first preset threshold, and/or the probability of the first physical shared channel being incorrectly decoded is less than a second preset threshold, and the first HARQ-ACK feedback information is determined to be ACK; and determining that the first HARQ-ACK feedback information is NACK according to the fact that the probability of the first physical shared channel being correctly decoded is smaller than a first preset threshold and/or the probability of the first physical shared channel being incorrectly decoded is larger than a second preset threshold.

For example, the first node determines the probability that the PDSCH is decoded correctly and/or incorrectly based on the DMRS of the PDSCH, thereby obtaining predicted HARQ-ACK feedback information for the PDSCH. For example, by detecting the DMRS to obtain the channel quality, predicting the probability that the PDSCH is decoded correctly and/or incorrectly, and further determining predicted HARQ-ACK feedback information corresponding to the PDSCH; or detecting the DMRS to obtain a channel estimation result, predicting the probability of correct and/or incorrect decoding of the PDSCH according to the channel estimation result, and further determining predicted HARQ-ACK feedback information corresponding to the PDSCH.

In yet another example, the first node determines a probability that a PDSCH is correctly/incorrectly decoded based on a DMRS corresponding to a PDCCH corresponding to the PDSCH, thereby obtaining predicted HARQ-ACK feedback information, including: for a PDSCH scheduled by DCI in a PDCCH, when a first node is configured to provide predicted HARQ-ACK information, the first node determines the probability that the PDSCH is correctly and/or incorrectly decoded according to the DMRS in the PDCCH corresponding to the PDSCH, and further determines predicted HARQ-ACK feedback information corresponding to the PDSCH; or when the first node is configured to provide predicted HARQ-ACK information for one PDCCH, the first node determines the probability that the PDSCH is correctly and/or incorrectly decoded according to the DMRS of the PDCCH, and further determines predicted HARQ-ACK feedback information corresponding to the PDSCH.

In yet another example, for a first node configured to obtain predicted HARQ-ACK feedback information corresponding to the PDSCH based on m (m is a positive integer) channel quality information previously reported by the PDSCH; the first node can determine the probability (based on historical conditions) that the PDSCH is decoded correctly/incorrectly based on the average value of m channel qualities continuously reported before receiving the PDSCH and in combination with the MCS information (including modulation scheme and/or code rate) of the PDSCH to be scheduled, thereby obtaining predicted HARQ-ACK feedback information corresponding to the PDSCH.

Further, the first node may be further modified to determine the probability that the PDSCH is decoded correctly/incorrectly based on one or more channel quality information related to the frequency domain (for example, the subband where the PDSCH is located) resource where the PDSCH is scheduled in the m channel quality information reported before receiving the PDSCH, and then determine the predicted HARQ-ACK feedback information corresponding to the PDSCH by combining the MCS information (including the modulation scheme and/or the code rate) where the PDSCH is scheduled. For example, the bandwidth of one carrier is divided equally into 4 sub-bands in the frequency domain, and the first node measures the channel quality in each sub-band and reports it to the base station. If a PDSCH is scheduled in the second sub-band, the first node uses one or more channel quality information in the second sub-band reported before the PDSCH to determine the probability that the PDSCH is correctly/incorrectly decoded, thereby obtaining the HARQ-ACK feedback information predicted by the PDSCH.

In practice, in this manner, the first node needs to decode the PDCCH corresponding to the PDSCH first, so that the frequency domain resource where the PDSCH is located is obtained from the frequency domain resource allocation information in the PDCCH, and then the predicted HARQ-ACK feedback information of the PDSCH is determined by combining one or more pieces of channel quality information related to the frequency domain resource reported by the first node. This approach also enables transmission of HARQ-ACK feedback information as early as possible relative to the HARQ-ACK feedback information transmission position in the related art.

In another example, determining predicted HARQ-ACK feedback information for a PDSCH based on MCS information corresponding to the PDSCH (MCS information including at least one of modulation scheme, code rate, spectral efficiency) includes: for the predicted HARQ-ACK feedback information corresponding to the PDSCH configured to be obtained based on the MCS information of the PDSCH, the first node can predict the probability that the PDSCH is correctly/incorrectly decoded in combination with the MCS corresponding to the PDSCH according to the historical PDSCH decoding result and the corresponding MCS information accumulation experience, and finally obtain the predicted HARQ-ACK feedback information corresponding to the PDSCH.

It is appreciated that this approach can be implemented based on an artificial intelligence (ARTIFICIAL INTELLIGENCE, AI) model, e.g., training the AI model with historical PDSCH decoding results and corresponding MCS information, such that the AI model can accurately predict HARQ-ACK feedback information based on the MCS of the PDSCH.

In some embodiments, the first HARQ-ACK feedback information is determined based on output information of an artificial intelligence AI model, the output information of the AI model including at least one of:

HARQ-ACK feedback information corresponding to a first physical shared channel predicted by an AI model;

the probability that the AI model predicted first physical shared channel was correctly decoded;

the probability of the AI model predicted first physical shared channel being decoded in error;

and the channel quality information corresponding to the first physical shared channel predicted by the AI model.

In some embodiments, the AI model is trained based on sample information of at least one sample and sample tags.

The sample information is related information of a physical shared channel in a historical time period, and the related information of the physical shared channel comprises at least one of the following items: a fourth preset number of channel quality information before the physical shared channel, channel quality information in a third preset time period before the physical shared channel, decoding results of the physical shared channel, MCS information corresponding to the physical shared channel and channel quality information corresponding to the physical shared channel in the fourth preset time period before the physical shared channel; the sample tag is the decoding result of the physical shared channel.

In some embodiments, the channel quality information corresponding to the physical shared channel is determined based on at least one of:

channel quality information measured by DMRS of a physical shared channel;

a fifth preset number of channel quality information before the physical shared channel;

Channel quality information measured by DMRS of a physical control channel corresponding to a physical shared channel.

In some embodiments, the sample information further comprises at least one of:

MCS fitness information corresponding to a physical shared channel transmitted by a second node, where the MCS fitness information refers to probability that the physical shared channel is correctly and/or incorrectly decoded based on the MCS information corresponding to the physical shared channel;

And the second node transmits channel quality information corresponding to the physical shared channel.

In some embodiments, the MCS information corresponding to the physical shared channel includes at least one of: modulation scheme, code rate, spectral efficiency, transport block size.

For example, the second node may send MCS matching information corresponding to the physical shared channel to the first node at the same time when scheduling one PDSCH, and the AI model may be trained based on the MCS matching information, so that predicted HARQ-ACK feedback information corresponding to the physical shared channel may be output when the MCS matching information corresponding to the physical shared channel is input to the AI model.

The second node may also schedule a PDSCH while simultaneously transmitting to the first node a channel quality information associated with the PDSCH. That is, the second node determines MCS information corresponding to the PDSCH based on the channel quality information from the second node side, and the first node should correctly decode the PDSCH considering that the channel quality is matched to the PDSCH from the second node side. Thus, the AI model can also be trained based on the channel quality information and output predicted HARQ-ACK feedback information. So that when channel quality information of a physical shared channel is input to the AI model, predicted HARQ-ACK feedback information corresponding to the physical shared channel can be output.

In some embodiments, during the training process, the AI model may input sample information (sample information is related information of one physical shared channel in a historical period) into the AI model one by one, and output predicted HARQ-ACK feedback information of the PDSCH. Then, a loss value may be determined based on the output actual HARQ-ACK feedback information of the PDSCH corresponding to the predicted HARQ-ACK feedback information of the PDSCH. The loss value may be used to characterize a difference in actual HARQ-ACK feedback information of the PDSCH corresponding to the output predicted HARQ-ACK feedback information of the PDSCH. The larger the loss value, the larger the difference. The parameters of the initial AI model may then be updated with the loss value. Thus, each time one sample information is input, the parameters of the AI model can be updated once based on the actual HARQ-ACK feedback information corresponding to the sample information.

In some embodiments, the HARQ-ACK information is transmitted for the PDSCH based on the AI model, or based on the probability of correct/incorrect decoding of the PDSCH output by the AI model, resulting in predicted HARQ-ACK information. For all the above-mentioned correct/incorrect decoding probabilities, a decision can be made based on a predetermined threshold, so as to obtain HARQ-ACK information.

Illustratively, determining predicted HARQ-ACK feedback information using output information of the AI model is based on the following:

The AI model is trained based on PDSCH decoding results over a historical period of time and channel quality information measured by the DMRS of the PDSCH corresponding thereto. When the AI model is used, an input of the AI model is channel quality information measured by DMRS of PDSCH, output is decoding probability that the PDSCH is correct/incorrect, or output (predicted) HARQ-ACK feedback information of the PDSCH.

The AI model is trained based on PDSCH decoding results over a historical period of time and channel quality information measured by the DMRS of the PDCCH corresponding to the PDSCH. When the AI model is used, the input of the AI model is channel quality information measured by DMRS of PDCCH corresponding to PDSCH, and output is decoding probability that the PDSCH is correct/incorrect, or output (predicted) HARQ-ACK feedback information of the PDSCH.

The AI model is trained based on PDSCH decoding results over a historical period of time and a corresponding fourth predetermined number of channel quality information preceding the PDSCH or channel quality information over a third predetermined duration preceding the PDSCH. When the AI model is used, the input of the AI model is a fourth preset number of channel quality information before the PDSCH or channel quality information within a third preset time period (or window length) before the PDSCH, and the output is a decoding probability that the PDSCH is correct/incorrect, or output is (predicted) HARQ-ACK feedback information of the PDSCH.

The AI model is trained based on PDSCH decoding results over a historical time period and PDSCHs decoding results over a fourth predetermined duration (or window length) prior to the PDSCH corresponding thereto. When the AI model is used, the input of the AI model is PDSCHs decoding results in a fourth preset duration (or window length) before the PDSCH, and the decoding results are output as decoding probabilities that the PDSCH is correct/incorrect, or output (predicted) HARQ-ACK feedback information of the PDSCH.

In some embodiments, the HARQ-ACK feedback information further includes second HARQ-ACK feedback information corresponding to the second physical shared channel, the second HARQ-ACK feedback information being HARQ-ACK feedback information determined after decoding of the second physical shared channel.

The second HARQ-ACK feedback information may also have other names, such as actual HARQ-ACK feedback information. The present disclosure is not limited in this regard.

In some embodiments, the second HARQ-ACK feedback information, when ACK, indicates that the second physical shared channel is to be decoded correctly, or decoded correctly; the second HARQ-ACK information being NACK indicates that the second physical shared channel will not be decoded correctly or not.

In some embodiments, the form of the HARQ-ACK feedback information includes at least one of: the HARQ-ACK codebook mechanism, the HARQ-ACK bundling mechanism, the NACK only feedback mechanism, and the HARQ-ACK mechanism are disabled.

In some embodiments, the first node sends a HARQ-ACK codebook to the second node, the HARQ-ACK codebook containing HARQ-ACK feedback information, each of the bits of the HARQ-ACK codebook corresponding to one of:

at least one first HARQ-ACK feedback information;

At least one second HARQ-ACK feedback information.

In some embodiments, a first bit of the bits of the HARQ-ACK codebook is located before a second bit of the at least one first HARQ-ACK feedback information.

For example, the HARQ-ACK feedback information included in one HARQ-ACK codebook is only to determine the first HARQ-ACK feedback information based on the DMRS of each PDSCH of the plurality of PDSCH. Wherein, one HARQ-ACK codebook cannot contain the first HARQ-ACK feedback information and the second HARQ-ACK feedback information at the same time.

Or the HARQ-ACK feedback information contained in one HARQ-ACK codebook may be allowed to include the first HARQ-ACK feedback information and the second HARQ-ACK feedback information. For example, the first HARQ-ACK feedback information is concatenated in the order of PDSCH, and the second HARQ-ACK feedback information is concatenated in the order of corresponding PDSCH. The concatenated first HARQ-ACK feedback information is placed before (or after) the concatenated second HARQ-ACK feedback information to obtain a HARQ-ACK codebook. The PUCCH resource used by the HARQ-ACK codebook is from a PUCCH resource configured for the second HARQ-ACK feedback information.

The first HARQ-ACK feedback information may be transmitted based on a HARQ-ACK codebook mechanism and a HARQ-ACK bundling mechanism. For example, it is required that: if the first HARQ-ACK feedback information and the second HARQ-ACK feedback information are contained in one HARQ-ACK codebook at the same time, the first HARQ-ACK feedback information can be bundled with each other, the second HARQ-ACK feedback information can be bundled with each other, but the first HARQ-ACK feedback information and the second HARQ-ACK feedback information cannot be bundled with each other. Or for example, it is required that: if one HARQ-ACK codebook contains both the first HARQ-ACK feedback information and the second HARQ-ACK feedback information, different types of HARQ-ACK feedback information can be bundled with each other.

In some embodiments, the start symbol of the first HARQ-ACK feedback information corresponding to the first physical shared channel is after and separated from the end symbol of the DMRS of the first physical shared channel by at least a third preset number of symbols; or alternatively

The starting symbol of the first HARQ-ACK feedback information corresponding to the first physical shared channel is after the ending symbol of the DMRS of the physical control channel corresponding to the first physical shared channel, and is separated from the ending symbol of the DMRS of the physical control channel corresponding to the first physical shared channel by at least a sixth preset number of symbols; or alternatively

The starting symbol of the first HARQ-ACK feedback information corresponding to the first physical shared channel is after the ending symbol of the physical control channel corresponding to the first physical shared channel, and is separated from the ending symbol of the first physical control channel by at least a seventh preset number of symbols.

In some embodiments, a duration of an interval between a position of a start symbol corresponding to the first HARQ-ACK feedback information corresponding to the first physical shared channel and an end symbol of the DMRS of the first physical shared channel is determined based on the third preset number.

Or the interval duration between the position of the start symbol corresponding to the first HARQ-ACK feedback information corresponding to the first physical shared channel and the end symbol of the DMRS of the physical control channel corresponding to the first physical shared channel is determined based on the sixth preset number.

Or the interval duration between the position of the start symbol corresponding to the first HARQ-ACK feedback information corresponding to the first physical shared channel and the end symbol of the physical control channel corresponding to the first physical shared channel is determined based on the seventh preset number.

In some embodiments, the third preset number is determined based on at least one of:

the subcarrier spacing of the first physical shared channel,

The subcarrier spacing of the physical control channel corresponding to the first physical shared channel,

The subcarrier spacing of the physical control channel occupied by the first HARQ-ACK feedback information corresponding to the first physical shared channel.

In some embodiments, the third preset number, the sixth preset number, and the seventh preset number are predetermined in a standard or configured by the first node and reported to the second node.

For example, the earliest starting position of the first HARQ-ACK feedback information corresponding to one PDSCH is defined as: after the end symbol of the DMRS of the PDSCH and at least T symbols apart from the end symbol of the DMRS of the first physical shared channel. T is predetermined in the standard. Or T is reported by the UE to the base station. The value of T is related to the subcarrier spacing of the PDSCH, the subcarrier spacing of the PDCCH scheduling the PDSCH, and the subcarrier spacing of the PUCCH where the HARQ-ACK is located.

In addition, in the related art, for one PDSCH, its actual HARQ-ACK feedback information is provided N1 symbols after the PDSCH end symbol at the earliest, in terms of time, expressed as an interval T _proc,1 duration after the PDSCH end symbol at the earliest,In some cases, T _proc,1 will be trimmed through either d _1,1 or d2 in the following formulas. Similar principles, for the predicted HARQ-ACK information described above, a new T _proc,1 is determined based on T, e.g., replacing N ₁ or (N ₁+d_1,1) in the equation described above with T, with the remaining parameters unchanged. In general, especially for the PDSCH scheduled by the pre-DMRS method, since the DMRS is located before the PDSCH, the new T _proc,1 determined after the DMRS symbol of the PDSCH by the third preset number of symbols can provide the earliest starting position of the HARQ-ACK feedback information, compared with the earliest starting position of the actual HARQ-ACK feedback information, so as to reduce the delay of the HARQ-ACK information.

In some embodiments, the first node sending HARQ-ACK feedback information to the second node, comprising:

when the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel is different from the second HARQ-ACK feedback information corresponding to the physical shared channel, the first node sends the first HARQ-ACK feedback information to the second node and then sends the second HARQ-ACK feedback information;

Or under the condition that the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel is the same as the second HARQ-ACK feedback information corresponding to the physical shared channel, the first node does not send the second HARQ-ACK feedback information after sending the first HARQ-ACK feedback information to the second node;

Or when the first physical shared channel and the second physical shared channel are the same physical shared channel, and the first HARQ-ACK feedback information corresponding to the physical shared channel is NACK information and the second HARQ-ACK feedback information corresponding to the physical shared channel is ACK, the first node does not send the second HARQ-ACK feedback information after sending the first HARQ-ACK feedback information to the second node;

Or when the first physical shared channel and the second physical shared channel are the same physical shared channel, and the first HARQ-ACK feedback information corresponding to the physical shared channel is ACK information and the second HARQ-ACK feedback information corresponding to the physical shared channel is NACK, the first node sends the first HARQ-ACK feedback information to the second node and then sends the second HARQ-ACK feedback information.

It will be appreciated that since the first HARQ-ACK feedback information is estimated, its effect is to reduce feedback delay at the cost of possible transmission error results. Therefore, when the result of the second HARQ-ACK feedback information in the first HARQ-ACK feedback information field is different, the second HARQ-ACK feedback information of the same physical shared channel needs to be timely retransmitted, thereby eliminating the above negative effects. Of course, the probability of occurrence of such a negative impact is relatively small, because estimating the success rate of the first HARQ-ACK feedback information is only used if a certain threshold requirement is met.

Considering that the occurrence probability of the difference of the second HARQ-ACK feedback information in the first HARQ-ACK feedback information domain is small, the following optimization scheme may be further considered:

If the first HARQ-ACK feedback information and the second HARQ-ACK feedback information corresponding to the same physical shared channel have the same result, the first node does not send the second HARQ-ACK feedback information corresponding to the physical shared channel after sending the first HARQ-ACK feedback information to the second node; otherwise, the first HARQ-ACK feedback information is sent and then the second HARQ-ACK feedback information is sent. In this way, the transmission of the first node can be reduced, and the above negative effect can be eliminated, because the second node receives the first HARQ-ACK feedback information of one physical shared channel, and then does not receive the second HARQ-ACK feedback information of the physical shared channel, the base station considers that the first HARQ-ACK information is valid, that is, the result is equivalent to the result after actually decoding the physical shared channel.

The following example can also be considered:

if the first HARQ-ACK feedback information corresponding to the same physical shared channel is NACK information and the corresponding second HARQ-ACK feedback information is ACK, the first node does not send the second HARQ-ACK feedback information after sending the first HARQ-ACK feedback information to the second node.

In this case, the first node has acquired the physical shared channel although this would result in retransmission of the physical shared channel, so this approach does not affect the first node to acquire the correct physical shared channel.

If the first HARQ-ACK feedback information corresponding to the same physical shared channel is ACK information and the corresponding second HARQ-ACK feedback information is NACK, the first node sends the first HARQ-ACK feedback information to the second node and then sends the second HARQ-ACK feedback information. In this case, the first node does not acquire the correct physical shared channel, so it is necessary to timely retransmit the second HARQ-ACK feedback information.

It will be appreciated that this mechanism can provide minimum delayed HARQ-ACK information and can reduce the number of HARQ-ACK PUCCH transmissions without introducing additional unacceptable errors. For example, if only predicted HARQ-ACK information is performed, and if the predicted HARQ-ACK information is erroneous, it results in an unacceptable error.

In some embodiments, after the first node sends HARQ-ACK feedback information corresponding to the physical shared channel to the second node, the method further includes: the first node sends first indication information to the second node, wherein the first indication information is used for indicating whether first HARQ-ACK feedback information corresponding to the physical shared channel is correct or not.

It may be understood that after the first node sends the first HARQ-ACK feedback information corresponding to the physical shared channel to the second node, the first indication information is sent, where the first indication information is used to indicate whether the first HARQ-ACK feedback information corresponding to the physical shared channel is correct. That is, the first indication information is used to indicate whether the first HARQ-ACK feedback information corresponding to the physical shared channel is the same as the corresponding second HARQ-ACK feedback information, or the first indication information is used to indicate whether the first HARQ-ACK feedback information is correct, that is, the same as the second HARQ-ACK feedback information is correct, or the first indication information is incorrect.

The following is further optimized:

If the result of the first HARQ-ACK feedback information corresponding to the physical shared channel is the same as the result of the corresponding second HARQ-ACK feedback information, the first indication information is not sent after the first node sends the first HARQ-ACK feedback information to the second node; otherwise, the first node sends first HARQ-ACK feedback information to the second node, and first indication information is sent. The first indication information is used for indicating that the first HARQ-ACK feedback information corresponding to the physical shared channel is correct.

If the first HARQ-ACK feedback information corresponding to the physical shared channel is NACK and the corresponding second HARQ-ACK feedback information is ACK, the first indication information is not sent any more. In this case, the first node has correctly received the physical channel, although the first HARQ-ACK feedback information transmitted by the first node is NACK. Therefore, the first indication information may not be transmitted any more. Although this would result in the base station retransmitting the physical shared channel, it does not affect the timeliness of the physical shared channel, but only the associated resources for retransmitting the physical shared channel are additionally consumed.

If the first HARQ-ACK feedback information corresponding to the physical shared channel is ACK and the corresponding second HARQ-ACK feedback information is NACK, the first indication information is sent after the first node sends the first HARQ-ACK feedback information to the second node. The first indication information is used for indicating that the first HARQ-ACK feedback information corresponding to the physical shared channel is incorrect.

In some embodiments, the first indication information is transmitted through one independent PUCCH resource and the first indication information is represented in a sequence-based manner.

In some embodiments, the first node receives second indication information sent by the second node, where the second indication information is used to indicate at least one of:

transmitting first HARQ-ACK feedback information;

Sending second HARQ-ACK feedback information;

parameters for determining first HARQ-ACK feedback information;

Output information of the AI model.

The second indication information may be RRC signaling or DCI signaling.

For example, the second node indicates, through RRC signaling or DCI signaling, which mechanism the first node sends HARQ-ACK feedback information corresponding to the PDSCH. For example, the first node transmits first HARQ-ACK feedback information corresponding to the PDSCH to the second node or the first node transmits second HARQ-ACK feedback information corresponding to the PDSCH. If the first node is instructed to transmit the first HARQ-ACK feedback information corresponding to the PDSCH, and if there are multiple ways of determining the first HARQ-ACK feedback information, further instructs which way to use to determine the first HARQ-ACK feedback information.

Based on the information, the first node sends HARQ-ACK feedback information to the second node, wherein the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding of the first physical shared channel. The corresponding HARQ-ACK feedback information can be obtained without executing the decoding of the first physical shared channel, and the HARQ-ACK feedback information is provided for the second node, so that the HARQ-ACK information feedback time is shortened, and the HARQ-ACK feedback efficiency is improved.

The foregoing description of the embodiments of the present disclosure has been presented primarily in terms of methods. A data transmission device for performing the data transmission method in any of the above embodiments and possible implementations thereof is also shown below. It will be appreciated that the data transmission device comprises, for the purpose of the data transmission method, corresponding hardware structures and/or software modules for performing the respective functions; those of skill in the art will readily appreciate that the algorithm steps of the examples described in connection with the embodiments disclosed herein may be implemented as hardware or a combination of hardware and computer software. Whether a function is implemented as hardware or computer software driven hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

The embodiment of the disclosure may divide the functional modules of the data transmission device according to the embodiment of the method described above, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one functional module. The integrated modules may be implemented in hardware or software. It should be noted that, in the embodiment of the present disclosure, the division of the modules is merely a logic function division, and other division manners may be implemented in actual practice. The following description will take an example of dividing each function module into corresponding functions.

Fig. 3 is a schematic structural diagram of a data transmission device according to an embodiment of the present disclosure. The data transmission device 30 includes: a communication module 31 and a model training module 32.

The communication module 31 is configured to send HARQ-ACK feedback information, where the HARQ-ACK feedback information includes at least first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding the first physical shared channel.

Modulation and Coding Scheme (MCS) information corresponding to a first physical shared channel;

A signaling indication of the second node;

channel quality information corresponding to the first physical shared channel;

MCS fitness information corresponding to the first physical shared channel, where the MCS fitness information refers to a probability that the physical shared channel is correctly and/or incorrectly decoded based on the MCS information corresponding to the first physical shared channel;

In some embodiments, the communication module 31 is configured to send a HARQ-ACK codebook, where the HARQ-ACK codebook includes HARQ-ACK feedback information, and each bit in the bits of the HARQ-ACK codebook corresponds to one of:

at least one first HARQ-ACK feedback information;

At least one second HARQ-ACK feedback information.

In some embodiments, a duration of an interval between a position of a start symbol corresponding to the first HARQ-ACK feedback information corresponding to the first physical shared channel and an end symbol of the DMRS of the first physical shared channel is determined based on the third preset number; or alternatively

The interval duration between the position of the start symbol corresponding to the first HARQ-ACK feedback information corresponding to the first physical shared channel and the end symbol of the DMRS of the physical control channel corresponding to the first physical shared channel is determined based on a sixth preset number; or alternatively

The interval duration between the position of the start symbol corresponding to the first HARQ-ACK feedback information corresponding to the first physical shared channel and the end symbol of the physical control channel corresponding to the first physical shared channel is determined based on the seventh preset number.

the subcarrier spacing of the first physical shared channel,

In some embodiments, the communication module 31 is configured to send the first HARQ-ACK feedback information and then send the second HARQ-ACK feedback information when the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel and the second HARQ-ACK feedback information corresponding to the physical shared channel are different;

Or when the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel is the same as the second HARQ-ACK feedback information corresponding to the physical shared channel, the second HARQ-ACK feedback information is not sent after the first HARQ-ACK feedback information is sent;

Or when the first physical shared channel and the second physical shared channel are the same physical shared channel, and the first HARQ-ACK feedback information corresponding to the physical shared channel is NACK information and the second HARQ-ACK feedback information corresponding to the physical shared channel is ACK, the second HARQ-ACK feedback information is not sent after the first HARQ-ACK feedback information is sent;

Or when the first physical shared channel and the second physical shared channel are the same physical shared channel, and the first HARQ-ACK feedback information corresponding to the physical shared channel is ACK information and the second HARQ-ACK feedback information corresponding to the physical shared channel is NACK, sending the second HARQ-ACK feedback information after sending the first HARQ-ACK feedback information.

In some embodiments, the communication module 31 is configured to send first indication information, where the first indication information is used to indicate whether the first HARQ-ACK feedback information corresponding to the first physical shared channel is correct.

In some embodiments, the communication module 31 is configured to receive second indication information, where the second indication information is configured to indicate at least one of:

transmitting first HARQ-ACK feedback information;

Sending second HARQ-ACK feedback information;

parameters for determining first HARQ-ACK feedback information;

Output information of the AI model.

In some embodiments, model training module 32 is configured to train the AI model based on sample information of at least one sample and the sample tags;

channel quality information measured by DMRS of a physical shared channel;

In some embodiments, the sample information further comprises at least one of:

MCS (modulation and coding scheme) fitness information corresponding to a physical shared channel sent by a second node;

channel quality information corresponding to the physical shared channel transmitted by the second node is determined based on the MCS information corresponding to the physical shared channel.

In some embodiments, the communication module 31, for MCS information corresponding to the physical shared channel, includes at least one of: modulation scheme, code rate, spectral efficiency, transport block size.

Fig. 4 is a schematic structural diagram of another data transmission device according to an embodiment of the present disclosure. The data transmission device 40 includes: a communication module 41 and a model training module 42.

The communication module 41 is configured to receive HARQ-ACK feedback information corresponding to a physical shared channel, where the HARQ-ACK feedback information includes at least first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding the first physical shared channel.

In some embodiments, the communication module 41 is configured to receive a HARQ-ACK codebook, where the HARQ-ACK codebook includes a plurality of bits, and each bit of the plurality of bits corresponds to one of:

at least one first HARQ-ACK feedback information;

At least one second HARQ-ACK feedback information.

In some embodiments, the communication module 41 is configured to receive the second HARQ-ACK feedback information after receiving the first HARQ-ACK feedback information when the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel is different from the second HARQ-ACK feedback information corresponding to the physical shared channel; or alternatively

When the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel is the same as the second HARQ-ACK feedback information corresponding to the physical shared channel, the second HARQ-ACK feedback information is not received after the first HARQ-ACK feedback information is received; or alternatively

When the first physical shared channel and the second physical shared channel are the same physical shared channel, and the first HARQ-ACK feedback information corresponding to the physical shared channel is NACK information and the second HARQ-ACK feedback information corresponding to the physical shared channel is ACK, the second HARQ-ACK feedback information is not received after the first HARQ-ACK feedback information is received; or alternatively

And when the first physical shared channel and the second physical shared channel are the same physical shared channel, and the first HARQ-ACK feedback information corresponding to the physical shared channel is ACK information and the second HARQ-ACK feedback information corresponding to the physical shared channel is NACK, receiving the second HARQ-ACK feedback information after receiving the first HARQ-ACK feedback information.

In some embodiments, the communication module 41 is configured to receive first indication information, where the first indication information is used to indicate whether the first HARQ-ACK feedback information corresponding to the first physical shared channel is correct.

In some embodiments, the communication module 41 is configured to send second indication information, where the second indication information is configured to indicate at least one of:

transmitting first HARQ-ACK feedback information;

Sending second HARQ-ACK feedback information;

parameters for determining first HARQ-ACK feedback information;

Output information of the AI model.

In some embodiments, model training module 42 is configured to train the AI model based on sample information of at least one sample and the sample tags;

channel quality information measured by DMRS of a physical shared channel;

In some embodiments, the MCS information corresponding to the first physical shared channel includes at least one of: modulation scheme, code rate, spectral efficiency.

The determining manner of the first HARQ-ACK feedback information, the content related to the HARQ-ACK codebook and the sample information, etc. may be described with reference to the above embodiments, and will not be repeated here.

In the case of implementing the functions of the integrated modules in the form of hardware, the embodiments of the present disclosure also provide a possible structure of a communication device for performing the data transmission method provided by the embodiments of the present disclosure. As shown in fig. 5, the communication apparatus 500 includes: a communication interface 503, a processor 502, and a bus 504. Optionally, the communication device may further comprise a memory 501.

The processor 502 may be any logic block, module, and circuitry that implements or performs the various examples described in connection with the embodiments of the disclosure. The processor 502 may be a central processor, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, a transistor logic device, a hardware component, or any combination thereof. Which may implement or perform the various exemplary logic blocks, modules and circuits described in connection with embodiments of the disclosure. The processor 502 may also be a combination of computing functions, e.g., comprising one or more microprocessor combinations, a combination of a DSP and a microprocessor, etc.

A communication interface 503 for connecting with other devices via a communication network. The communication network may be an ethernet, a radio access network, a wireless local area network (wireless local area networks, WLAN), etc.

Memory 501, which may be, but is not limited to, a read-only memory (ROM) or other type of static storage device that may store static information and instructions, a random access memory (random access memory, RAM) or other type of dynamic storage device that may store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), magnetic disk storage or other magnetic storage device, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer.

As a possible implementation, the memory 501 may exist separately from the processor 502, and the memory 501 may be connected to the processor 502 through the bus 504 for storing instructions or program codes. The processor 502, when calling and executing instructions or program code stored in the memory 501, is capable of implementing the data transmission method provided by the embodiments of the present disclosure.

In another possible implementation, the memory 501 may also be integrated with the processor 502.

Bus 504, which may be an extended industry standard architecture (extended industry standard architecture, EISA) bus, or the like. The bus 504 may be divided into an address bus, a data bus, a control bus, and the like. For ease of illustration, only one thick line is shown in fig. 5, but not only one bus or one type of bus.

Some embodiments of the present disclosure provide a computer readable storage medium (e.g., a non-transitory computer readable storage medium) having stored therein computer program instructions that, when run on a computer, cause the computer to perform a data transmission method as described in any of the above embodiments.

In an exemplary embodiment, the computer may be the data transmission device described above, and the present disclosure is not limited to a specific form of the computer.

In some examples, the computer-readable storage medium described above may include, but is not limited to: magnetic storage devices (e.g., hard disk, floppy disk or tape, etc.), optical disks (e.g., compact Disk (CD), digital versatile disk (DIGITAL VERSATILEDISK, DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, key drive, etc.). Various computer-readable storage media described in this disclosure may represent one or more devices and/or other machine-readable storage media for storing information. The term "machine-readable storage medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) and/or data.

The disclosed embodiments provide a computer program product comprising instructions which, when run on a computer, cause the computer to perform the data transmission method according to any of the above embodiments.

The foregoing is merely a specific embodiment of the disclosure, but the protection scope of the disclosure is not limited thereto, and any changes or substitutions within the technical scope of the disclosure should be covered by the protection scope of the disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A method of data transmission, for use with a first node, the method comprising:

and transmitting HARQ-ACK feedback information, wherein the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding of the first physical shared channel.

2. The method of claim 1, wherein the HARQ-ACK feedback information further comprises second HARQ-ACK feedback information corresponding to a second physical shared channel, the second HARQ-ACK feedback information being HARQ-ACK feedback information determined after decoding of the second physical shared channel.

3. The method of claim 1, wherein the first HARQ-ACK feedback information is determined based on at least one of the following parameters:

A first probability that the first physical shared channel is correctly decoded, which is determined based on a demodulation reference signal DMRS of the first physical shared channel;

A third probability of determining a probability that the first physical shared channel is correctly decoded based on the DMRS of the physical control channel to which the first physical shared channel corresponds;

A first preset number of channel quality information preceding the first physical shared channel;

modulation and Coding Scheme (MCS) information corresponding to the first physical shared channel;

A signaling indication of the second node;

channel quality information corresponding to the first physical shared channel;

the MCS fitness information corresponding to the first physical shared channel refers to the probability that the first physical shared channel is correctly and/or incorrectly decoded based on the MCS information corresponding to the first physical shared channel;

decoding conditions of the physical shared channel in a first preset time period before the first physical shared channel;

and channel quality information in a second preset time period before the first physical shared channel.

4. The method of claim 1, wherein the first HARQ-ACK feedback information is determined based on output information of an artificial intelligence AI model, the output information of the AI model including at least one of:

HARQ-ACK feedback information corresponding to the first physical shared channel predicted by the AI model;

The AI model predicts a probability that the first physical shared channel is correctly decoded;

the AI model predicts a probability that the first physical shared channel is decoded in error;

and channel quality information corresponding to the first physical shared channel predicted by the AI model.

5. The method of claim 1, wherein the transmitting HARQ-ACK feedback information comprises:

Transmitting an HARQ-ACK codebook, wherein the HARQ-ACK codebook comprises the HARQ-ACK feedback information, and each bit in the HARQ-ACK codebook corresponds to one of the following:

at least one first HARQ-ACK feedback information;

At least one second HARQ-ACK feedback information.

6. The method of claim 5, wherein a first bit of the bits of the HARQ-ACK codebook is located before a second bit of the at least one first HARQ-ACK feedback information, and wherein the second bit of the at least one second HARQ-ACK feedback information.

7. The method of claim 1, wherein the start symbol of the first HARQ-ACK feedback information corresponding to the first physical shared channel follows the end symbol of the DMRS of the first physical shared channel and is separated from the end symbol of the DMRS of the first physical shared channel by at least a third predetermined number of symbols; or alternatively

8. The method of claim 7, wherein a duration of an interval between a position of a start symbol corresponding to first HARQ-ACK feedback information corresponding to the first physical shared channel and an end symbol of a DMRS of the first physical shared channel is determined based on the third preset number; or alternatively

The interval duration between the position of the start symbol corresponding to the first HARQ-ACK feedback information corresponding to the first physical shared channel and the end symbol of the DMRS of the physical control channel corresponding to the first physical shared channel is determined based on the sixth preset number; or alternatively

And determining the interval duration between the position of the start symbol corresponding to the first HARQ-ACK feedback information corresponding to the first physical shared channel and the end symbol of the physical control channel corresponding to the first physical shared channel based on the seventh preset number.

9. The method according to claim 7 or 8, wherein the third preset number is determined based on at least one of:

The subcarrier spacing of the first physical shared channel,

And the subcarrier interval of the physical control channel occupied by the first HARQ-ACK feedback information corresponding to the first physical shared channel.

10. The method of claim 2, wherein the transmitting HARQ-ACK feedback information comprises:

When the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel is different from the second HARQ-ACK feedback information corresponding to the physical shared channel, sending the first HARQ-ACK feedback information and then sending the second HARQ-ACK feedback information; or alternatively

When the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel is the same as the second HARQ-ACK feedback information corresponding to the physical shared channel, not transmitting the second HARQ-ACK feedback information after transmitting the first HARQ-ACK feedback information; or alternatively

When the first physical shared channel and the second physical shared channel are the same physical shared channel, and the first HARQ-ACK feedback information corresponding to the physical shared channel is NACK information and the second HARQ-ACK feedback information corresponding to the physical shared channel is ACK, not transmitting the second HARQ-ACK feedback information after transmitting the first HARQ-ACK feedback information; or alternatively

And when the first physical shared channel and the second physical shared channel are the same physical shared channel, and the first HARQ-ACK feedback information corresponding to the physical shared channel is ACK information and the second HARQ-ACK feedback information corresponding to the physical shared channel is NACK, sending the second HARQ-ACK feedback information after sending the first HARQ-ACK feedback information.

11. The method of claim 1, further comprising, after transmitting the HARQ-ACK feedback information:

and sending first indication information, wherein the first indication information is used for indicating whether first HARQ-ACK feedback information corresponding to the first physical shared channel is correct or not.

12. The method according to claim 2, wherein the method further comprises:

receiving second indication information, wherein the second indication information is used for indicating at least one of the following:

transmitting the first HARQ-ACK feedback information;

transmitting the second HARQ-ACK feedback information;

parameters for determining the first HARQ-ACK feedback information;

And outputting information of the AI model.

13. The method according to claim 4, wherein the method further comprises:

Training the AI model based on sample information of at least one sample and sample tags;

The sample information is related information of a physical shared channel in a historical time period, and the related information of the physical shared channel comprises at least one of the following: a fourth preset number of channel quality information before the physical shared channel, channel quality information in a third preset time period before the physical shared channel, decoding results of the physical shared channel, MCS information corresponding to the physical shared channel and channel quality information corresponding to the physical shared channel in the fourth preset time period before the physical shared channel; the sample tag is a decoding result of the physical shared channel.

14. The method according to claim 3 or 13, wherein the channel quality information corresponding to the physical shared channel is determined based on at least one of:

Channel quality information measured by the DMRS of the physical shared channel;

And the channel quality information measured by the DMRS of the physical control channel corresponding to the physical shared channel.

15. The method of claim 13, wherein the sample information further comprises at least one of:

MCS fitness information corresponding to the physical shared channel sent by the second node;

and the channel quality information corresponding to the physical shared channel sent by the second node is determined based on the MCS information corresponding to the physical shared channel.

16. The method of claim 3, wherein the MCS information corresponding to the physical shared channel comprises at least one of: modulation scheme, code rate, spectral efficiency, transport block size.

17. A method of data transmission, for use with a second node, the method comprising:

And receiving HARQ-ACK feedback information corresponding to a physical shared channel, wherein the HARQ-ACK feedback information at least comprises first HARQ-ACK feedback information corresponding to a first physical shared channel, and the first HARQ-ACK feedback information is HARQ-ACK feedback information determined before decoding of the first physical shared channel.

18. The method of claim 17, wherein the HARQ-ACK feedback information further comprises second HARQ-ACK feedback information corresponding to a second physical shared channel, the second HARQ-ACK feedback information being HARQ-ACK feedback information determined after decoding of the second physical shared channel.

19. The method of claim 17, wherein the first HARQ-ACK feedback information is determined based on at least one of the following parameters:

A signaling indication of the second node;

channel quality information corresponding to the first physical shared channel;

20. The method of claim 17, wherein the first HARQ-ACK feedback information is determined based on output information of an artificial intelligence AI model, the output information of the AI model including at least one of:

21. The method of claim 18, wherein the receiving physical shared channel corresponding HARQ-ACK feedback information comprises:

receiving a HARQ-ACK codebook, the HARQ-ACK codebook comprising a plurality of bits, each bit of the plurality of bits corresponding to one of:

at least one first HARQ-ACK feedback information;

At least one second HARQ-ACK feedback information.

22. The method of claim 18, wherein the receiving HARQ-ACK feedback information comprises:

Receiving the first HARQ-ACK feedback information and then receiving the second HARQ-ACK feedback information under the condition that the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel and the second HARQ-ACK feedback information corresponding to the physical shared channel are different; or alternatively

Under the condition that the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel is the same as the second HARQ-ACK feedback information corresponding to the physical shared channel, after receiving the first HARQ-ACK feedback information, the second HARQ-ACK feedback information is not received; or alternatively

And receiving the second HARQ-ACK feedback information after receiving the first HARQ-ACK feedback information under the condition that the first physical shared channel and the second physical shared channel are the same physical shared channel and the first HARQ-ACK feedback information corresponding to the physical shared channel is ACK information and the second HARQ-ACK feedback information corresponding to the physical shared channel is NACK.

23. The method of claim 17, further comprising, after receiving HARQ-ACK feedback information corresponding to the physical shared channel:

And receiving first indication information, wherein the first indication information is used for indicating whether first HARQ-ACK feedback information corresponding to the first physical shared channel is correct or not.

24. The method of claim 18, wherein the method further comprises:

transmitting second indication information, wherein the second indication information is used for indicating at least one of the following:

transmitting the first HARQ-ACK feedback information;

transmitting the second HARQ-ACK feedback information;

parameters for determining the first HARQ-ACK feedback information;

And outputting information of the AI model.

25. The method of claim 20, wherein the method further comprises:

26. The method of claim 25, wherein the channel quality information corresponding to the physical shared channel is determined based on at least one of:

27. The method of claim 19, wherein the MCS information corresponding to the first physical shared channel comprises at least one of: modulation scheme, code rate, spectral efficiency.

28. A communication device, comprising: a memory and a processor; the memory is coupled to the processor; the memory is used for storing instructions executable by the processor; the processor, when executing the instructions, performs the method of any one of claims 1 to 27.

29. A computer readable storage medium having stored thereon computer instructions which, when run on a communication device, cause the communication device to perform the method of any of claims 1 to 27.