CN118249965A - Information transmission method, device, related equipment and storage medium - Google Patents

Abstract

The present application discloses an information transmission method, apparatus, receiving end device, transmitting end device and storage medium. The method comprises: the receiving end device sends a media access control element (MAC CE) to the transmitting end device, the MAC CE includes first information, and the first information indicates the data transmission status of at least one hybrid automatic repeat request (HARQ) process.

Description

Information transmission method, device, related equipment and storage medium

Technical Field

The present application relates to the field of wireless communications, and in particular to an information transmission method, apparatus, related equipment and storage medium.

Background technique

The Automatic Repeat reQuest (ARQ) mechanism is one of the basic functions of the Radio Link Control (RLC) layer, which is used to support the Acknowledged Mode (AM) RLC and realize the retransmission of the RLC Protocol Data Unit (PDU). That is, the ARQ mechanism is a set of mechanisms in the RLC layer that can realize data retransmission. When the RLC PDU fails to send, the RLC layer can form a new MAC Service Data Unit (SDU) according to the instructions of the lower layer (i.e., the Media Access Control (MAC) layer) and send it to the MAC layer to realize data retransmission.

The Hybrid Automatic Repeat reQuest (HARQ) mechanism is one of the important and basic functions of the MAC layer. It is a mechanism that combines the Forward Error Correction (FEC) technology with the ARQ mechanism.

In the related art, the HARQ mechanism can be used as the only anchor point for air interface data transmission, that is, efficient data retransmission can be achieved by relying on the advantageous feature that the transmitting device can first perceive the air interface data transmission result based on the HARQ mechanism.

However, the transmitting end device may make an incorrect decision on whether data needs to be retransmitted based on the HARQ mechanism, thereby failing to accurately implement data retransmission.

Summary of the invention

To solve related technical problems, the embodiments of the present application provide an information transmission method, apparatus, related equipment and storage medium.

The technical solution of the embodiment of the present application is implemented as follows:

The embodiment of the present application provides an information transmission method, which is applied to a receiving device, including:

Send a MAC control element (CE) to the sending end device, the MAC CE

The method comprises first information, wherein the first information indicates a data transmission state of at least one hybrid automatic repeat request HARQ process.

In the above solution, the first information includes at least one of the following:

an identifier of the at least one HARQ process;

data transmission status of the at least one HARQ process;

an identifier of a data transmission status of the at least one HARQ process;

0The number of HARQ processes corresponding to the first information.

In the above solution, the identifier of the HARQ process is represented by a time offset K from the transmitting end device sending downlink data to the receiving end device sending uplink data and/or performing uplink feedback.

In the above solution, the identifier of the data transmission status includes one of the following:

A first identifier, wherein the first identifier indicates that the feedback corresponding to the data packet currently transmitted by the HARQ process is 5 non-acknowledgement response (NACK);

A second identifier, where the second identifier indicates that the feedback corresponding to the data packet currently transmitted by the HARQ process is an acknowledgment (ACK);

A third identifier, wherein the third identifier indicates that feedback corresponding to a data packet currently transmitted and a data packet last transmitted in the HARQ process are both NACK;

0 A fourth identifier, wherein the fourth identifier indicates that the feedback corresponding to the data packet currently transmitted by the HARQ process is ACK, and the feedback corresponding to the data packet last transmitted is NACK.

In the above scheme, the at least one HARQ process includes at least one first HARQ process, and the first HARQ process includes a HARQ process in which the receiving end device determines that the transmitting end device makes an erroneous judgment on the data transmission status.

5 In the above solution, the at least one HARQ process further includes at least one second HARQ process,

The second HARQ process includes the HARQ process corresponding to the data packet currently received by the receiving device.

In the above solution, sending the MAC CE to the transmitting end device includes:

At the moment of sending uplink data and/or performing uplink feedback, the MAC CE is sent to the transmitting end device.

In the above scheme, the at least one HARQ process is a HARQ process in which downlink data exists within a first time range, and the first time range is the time interval between the last moment of sending uplink data and/or performing uplink feedback and the current moment of sending uplink data and/or performing uplink feedback, and the first time range is associated with the time offset K from the transmitting end device sending downlink data to the receiving end device sending uplink data and/or performing uplink feedback.

In the above solution, sending the MAC CE to the transmitting end device includes:

The MAC CE is sent to the transmitting end device on an uplink wireless resource.

In the above solution, sending the MAC CE to the transmitting end device on the uplink wireless resource includes:

The corresponding uplink data and/or feedback data and the MAC CE are simultaneously sent to the transmitting end device via a physical uplink shared channel (PUSCH) used for sending uplink data and/or performing uplink feedback.

In the above solution, the MAC CE further includes second information, and the second information indicates that the type of the MAC CE is a MAC CE for HARQ feedback.

The embodiment of the present application also provides an information transmission method, which is applied to a sending end device, including:

A MAC CE sent by a receiving device is received, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

In the above solution, the first information includes at least one of the following:

an identifier of the at least one HARQ process;

data transmission status of the at least one HARQ process;

an identifier of a data transmission status of the at least one HARQ process;

The number of HARQ processes corresponding to the first information.

In the above solution, the identifier of the HARQ process is represented by a time offset K from the transmitting end device sending downlink data to the receiving end device sending uplink data and/or performing uplink feedback.

In the above solution, the identifier of the data transmission status includes one of the following:

A first identifier, where the first identifier indicates that the feedback corresponding to the data packet currently transmitted by the HARQ process is NACK;

A second identifier, where the second identifier indicates that the feedback corresponding to the data packet currently transmitted by the HARQ process is ACK;

A third identifier, wherein the third identifier indicates that feedback corresponding to a data packet currently transmitted and a data packet last transmitted in the HARQ process are both NACK;

A fourth identifier, wherein the fourth identifier indicates that the feedback corresponding to the data packet currently transmitted in the HARQ process is ACK, and the feedback corresponding to the data packet last transmitted is NACK.

In the above solution, when the identifier of the data transmission status includes the third identifier or the fourth identifier, the method further includes:

In the case that the data packet currently transmitted by the HARQ process is the same as the data packet last transmitted, the third identifier or the fourth identifier is used to determine the feedback corresponding to the data packet last transmitted by the HARQ process.

In the above solution, when the identifier of the data transmission status includes the third identifier or the fourth identifier, the method further includes:

When the data packet currently transmitted by the HARQ process is different from the data packet previously transmitted, the third identifier or the fourth identifier is used to determine feedback corresponding to the data packet currently transmitted by the HARQ process.

In the above scheme, the at least one HARQ process includes at least one first HARQ process, and the first HARQ process includes a HARQ process in which the receiving end device determines that the transmitting end device makes an erroneous judgment on the data transmission status.

In the above solution, the at least one HARQ process also includes at least one second HARQ process, and the second HARQ process includes the HARQ process corresponding to the data packet currently received by the receiving device.

In the above solution, the receiving of the MAC CE sent by the receiving end device includes:

Receive the MACCE sent by the receiving end device when sending uplink data and/or performing uplink feedback.

In the above scheme, the at least one HARQ process is a HARQ process in which downlink data exists within a first time range, and the first time range is the time interval between the last moment of sending uplink data and/or performing uplink feedback and the current moment of sending uplink data and/or performing uplink feedback, and the first time range is associated with the time offset K from the transmitting end device sending downlink data to the receiving end device sending uplink data and/or performing uplink feedback.

In the above solution, the receiving the MAC CE sent by the receiving end device at the moment of sending uplink data and/or performing uplink feedback includes:

Receive the MAC CE sent by the receiving end device on the uplink wireless resource when sending uplink data and/or performing uplink feedback.

In the above solution, the receiving the MAC CE sent by the receiving end device on the uplink radio resource at the moment of sending uplink data and/or performing uplink feedback includes:

The receiving device receives the corresponding uplink data and/or feedback data and the MAC CE simultaneously sent by the receiving end device through the PUSCH used for sending uplink data and/or performing uplink feedback at the moment of sending uplink data and/or performing uplink feedback.

In the above solution, the MAC CE further includes second information, and the second information indicates that the type of the MAC CE is a MAC CE for HARQ feedback.

The embodiment of the present application also provides an information transmission device, which is arranged on a receiving end device, and includes:

The first sending unit is used to send a MAC CE to a transmitting end device, where the MAC CE includes first information, and the first information indicates a data transmission status of at least one HARQ process.

The embodiment of the present application also provides an information transmission device, which is arranged on a sending end device, and includes:

The second receiving unit is used to receive a MAC CE sent by a receiving end device, where the MAC CE includes first information, and the first information indicates a data transmission status of at least one HARQ process.

The embodiment of the present application further provides a receiving end device, comprising: a first communication interface and a first processor; wherein,

The first communication interface is used to send a MAC CE to a transmitting end device, where the MAC CE includes first information, and the first information indicates a data transmission status of at least one HARQ process.

The embodiment of the present application further provides a sending end device, comprising: a second communication interface and a second processor; wherein:

The second communication interface is used to receive a MAC CE sent by a receiving end device, where the MAC CE includes first information, and the first information indicates a data transmission status of at least one HARQ process.

The embodiment of the present application further provides a receiving end device, comprising: a first processor and a first memory for storing a computer program that can be run on the processor,

Wherein, the first processor is used to execute the steps of any of the above-mentioned methods on the receiving end device side when running the computer program.

The embodiment of the present application further provides a sending end device, comprising: a second processor and a second memory for storing a computer program that can be run on the processor,

Wherein, the second processor is used to execute the steps of any of the above-mentioned methods on the sending end device side when running the computer program.

An embodiment of the present application also provides a storage medium on which a computer program is stored. When the computer program is executed by a processor, the computer program implements the steps of any of the above-mentioned methods on the receiving device side, or implements the steps of any of the above-mentioned methods on the sending device side.

The information transmission method, apparatus, related equipment and storage medium provided by the embodiment of the present application, the receiving device sends a MAC CE to the transmitting device, and the transmitting device receives the MAC CE sent by the receiving device, the MAC CE includes first information, and the first information indicates the data transmission status of at least one HARQ process. In the scheme provided by the embodiment of the present application, the receiving device feeds back the data transmission status of at least one HARQ process to the transmitting device through the MAC CE, that is, the transmitting device needs to demodulate and decode the MAC CE before obtaining the data transmission status of at least one HARQ process, thereby improving the accuracy of the transmitting device in detecting the data transmission status of the HARQ process, and further enabling the transmitting device to accurately determine whether the data needs to be retransmitted according to the data transmission status of the HARQ process, thereby realizing the unerring transmission of air interface data based on the HARQ mechanism, and improving the robustness of the air interface.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of the MCE CE format of an embodiment of the present application;

FIG2 is a schematic diagram of a flow chart of an information transmission method according to an embodiment of the present application;

FIG3 is a schematic diagram of the structure of an information transmission device according to an embodiment of the present application;

FIG4 is a schematic diagram of the structure of another information transmission device according to an embodiment of the present application;

FIG5 is a schematic diagram of the structure of a receiving end device according to an embodiment of the present application;

FIG6 is a schematic diagram of the structure of a transmitting end device according to an embodiment of the present application;

FIG. 7 is a schematic diagram of the structure of the information transmission system according to an embodiment of the present application.

Detailed ways

The present application is further described in detail below in conjunction with the accompanying drawings and embodiments.

In the HARQ mechanism of the related art, for each HARQ process (which can be expressed as HARQ Process in English), the receiving device can feed back the ACK/NACK of the transport block (TB) (i.e., data packet) to the transmitting device to realize the new transmission (i.e., transmission of a new TB) and retransmission (i.e., retransmission of the TB) of the data; in other words, the transmitting device can perceive the data transmission status by detecting the ACK/NACK fed back by the receiving device. However, the detection of ACK/NACK by the transmitting device may have false detection or missed detection (such as misdetecting NACK as ACK, etc.), which may cause data transmission failure. That is, there is a probability that the ACK/NACK fed back by the receiving device detected by the transmitting device has an error, so that the transmitting device cannot accurately determine whether the TB of each HARQ process needs to be retransmitted. There may be a situation where the TB is not sent successfully, but the transmitting device does not retransmit the TB because it misdetects NACK as ACK.

It can be seen from the above description that in the related art, the transmitting end device may not be able to accurately perceive the data transmission status based on the HARQ mechanism, and thus cannot accurately implement data retransmission.

In actual application, based on the data sorting and data retransmission of the ARQ mechanism, the TB that has not been retransmitted based on the HARQ mechanism can be identified and the retransmission of the TB can be completed. In other words, the problem that the HARQ mechanism cannot accurately implement data retransmission can be solved by the ARQ mechanism. However, this method requires the coexistence of the ARQ mechanism and the HARQ mechanism, which may increase the complexity of the protocol stack function.

Therefore, it is necessary to consider how to solve the problem that data retransmission cannot be accurately implemented in the HARQ mechanism in a scenario where the ARQ mechanism and the HARQ mechanism do not coexist.

Based on this, in various embodiments of the present application, the receiving device feeds back the data transmission status of at least one HARQ process to the transmitting device through the MAC CE, that is, the transmitting device needs to demodulate and decode the MAC CE to obtain the data transmission status of at least one HARQ process, thereby improving the accuracy of the transmitting device in detecting the data transmission status of the HARQ process, and then enabling the transmitting device to accurately determine whether the data needs to be retransmitted according to the data transmission status of the HARQ process, thereby achieving error-free transmission of air interface data based on the HARQ mechanism and improving the robustness of the air interface.

In addition, in various embodiments of the present application, since the problem that data retransmission cannot be accurately implemented in the HARQ mechanism can be solved without the ARQ mechanism, the ARQ function can be deleted from the protocol stack function as required, thereby reducing the complexity of the protocol stack function.

The embodiment of the present application provides an information transmission method, which is applied to a receiving device, including:

A MAC CE is sent to a transmitting end device, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

Among them, in actual application, the data transmission status of the HARQ process can be understood as whether the data packet transmitted by the HARQ process is correctly transmitted (i.e., successfully transmitted), or can be understood as the result of the data packet transmitted by the HARQ process. That is, the data transmission status of the HARQ process can at least include the ACK or NACK corresponding to at least one data packet transmitted by the HARQ process. It can be understood that after the transmitting end device receives the MAC CE containing the first information and obtains the data transmission status of the HARQ process fed back by the receiving end device, it can determine whether the at least one data packet needs to be retransmitted according to the ACK or NACK corresponding to the at least one data packet; in the case where the data transmission status of the HARQ process includes NACK, the data transmission status of the HARQ process can be used to request the retransmission of the data packet from the transmitting end device. In other words, the data transmission status of the HARQ process can trigger the transmitting end device to retransmit the data packet.

In actual application, the data packet may also be referred to as a TB, and a data packet may be understood as a MAC PDU. Since a MAC PDU usually carries multiple data packets of upper protocol layers (i.e., multiple RLC PDUs, i.e., multiple MAC SDUs), if the receiving device uses the ARQ mechanism to feedback the data transmission status to the transmitting device, it is necessary to feedback an ACK/NACK for each RLC PDU; while the receiving device feedbacks the data transmission status of the HARQ process to the transmitting device through the MAC CE, it only needs to feedback an ACK/NACK for one MAC PDU; therefore, compared with the ARQ mechanism, the receiving device feedbacks the data transmission status of the HARQ process to the transmitting device through the MACCE, which can save the overhead of ACK/NACK feedback, that is, it can reduce the resource consumption of feedback ACK/NACK. For example, assuming that a MAC PDU contains 100 RLC PDUs, the receiving device needs to feed back 100 ACK/NACKs to the transmitting device using the ARQ mechanism, while the receiving device feeds back the data transmission status of the HARQ process to the transmitting device through the MAC CE, and only needs to feed back one ACK/NACK to the transmitting device, thereby saving the overhead of ACK/NACK feedback.

In actual application, the HARQ process of the transmitting device may also be referred to as a transmitting end HARQ (Tx HARQ in English); the HARQ process of the receiving device may also be referred to as a receiving end HARQ (Rx HARQ in English).

In actual application, the transmitting end device may include a network device (specifically, a base station), and the receiving end device may include a terminal; or, the transmitting end device may include a terminal, and correspondingly, the receiving end device may include a network device. In addition, it can be understood that MAC CE is used for interaction between a terminal and a base station, and is specifically a control signaling.

In actual application, the terminal may also be referred to as user equipment (UE, User, Equipment) or user.

In actual application, the data transmission status of the HARQ process can trigger the receiving end device to send a MAC CE containing the first information to the transmitting end device. Exemplarily, in the case where the transmitting end device includes a network device and the receiving end device includes a terminal, when the HARQ process of the terminal receives new data sent by the HARQ process of the network device, that is, when the terminal receives a new data indication (NDI, New Data Indicator) in the downlink control information (DCI, Downlink Control Information) carried in the physical downlink control channel (PDCCH, Physical Downlink Control CHannel), if the terminal determines that there is a data packet that has not been successfully received, it applies for a dynamic process buffer (which can be expressed as Buffer in English), buffers the received new data packet, and sends a data retransmission request at the same time, that is, sends a MAC CE containing the first information to the network device, the first information indicates the data transmission status of the HARQ process, and the data transmission status of the HARQ process at least includes NACK corresponding to the data packet that has not been successfully received; after sending the MAC CE containing the first information to the network device, the terminal can wait for the network device to retransmit the corresponding data packet, and if the retransmitted data packet is correctly received by the terminal, the terminal can send the MAC CE containing the first information to the network device again. CE, the first information indicates the data transmission status of the HARQ process, and the data transmission status of the HARQ process includes at least the ACK corresponding to the retransmitted data packet; if the retransmitted data packet is not correctly received by the terminal, the terminal may also send a MAC CE containing the first information to the network device again, and the first information indicates the data transmission status of the HARQ process, and the data transmission status of the HARQ process includes at least the NACK corresponding to the retransmitted data packet.

In actual application, while the receiving device feeds back the data transmission status of at least one HARQ process to the transmitting device via MAC CE, the receiving device may also feed back the data transmission status to the transmitting device via the traditional HARQ mechanism. In this case, the receiving device may determine whether the sending device correctly judges the data transmission status of the HARQ process using the traditional HARQ mechanism based on its own perception (which may be understood as determination or judgment) of the data transmission status of the HARQ process; in other words, the receiving device may perceive whether there is a false detection or missed detection in the detection of ACK/NACK by the sending device using the traditional HARQ mechanism based on the data transmission status of the HARQ process, and may feed back the correct data transmission status of the HARQ process to the transmitting device via MAC CE, thereby improving data transmission efficiency. Exemplarily, for a data packet that fails to be transmitted by a HARQ process, the receiving device uses the traditional HARQ mechanism to feed back NACK to the transmitting device, and then finds that the transmitting device did not retransmit the data packet but sent a new data packet. At this time, the receiving device can determine that the transmitting device has missed detecting the NACK corresponding to the data packet, or has mistakenly detected the NACK corresponding to the data packet as ACK, that is, the receiving device can determine that the transmitting device has made an incorrect judgment on the data transmission status of the HARQ process, and can feed back the correct data transmission status of the HARQ process (that is, the NACK corresponding to the data packet) to the transmitting device through MAC CE, thereby improving data transmission efficiency.

Based on this, in one embodiment, the at least one HARQ process may include at least one first HARQ process, and the first HARQ process includes a HARQ process in which the receiving end device determines that the transmitting end device makes an erroneous decision on the data transmission status.

The error in the data transmission status judgment by the transmitting end device refers to the situation that the transmitting end device misdetects or misses ACK/NACK detection using the traditional HARQ mechanism.

In actual application, the receiving end device may also feed back the data transmission status of the HARQ process of the currently received new data (ie, the HARQ process corresponding to the currently received data packet) to the transmitting end device through the MAC CE.

Based on this, in one embodiment, the at least one HARQ process may further include at least one second HARQ process, and the second HARQ process includes a HARQ process corresponding to a data packet currently received by the receiving device.

In actual application, the MAC CE may also be called HARQ feedback MAC CE (expressed as HARQ_feedback MAC CE in English), etc. For example, when the transmitting device includes a network device and the receiving device includes a terminal, the MAC CE may be called an uplink HARQ feedback MAC CE, etc. The embodiment of the present application does not limit the name of the MAC CE as long as its function is realized.

In one embodiment, the MAC CE may further include second information, where the second information indicates that the type of the MAC CE is a MAC CE for HARQ feedback.

In actual application, the second information may include a logical channel identifier (LCID, Logical Channel IDentification), and the LCID may indicate that the type of the MAC CE is a MAC CE for HARQ feedback. Here, the LCID may be implemented using an idle value (expressed as Reserved in English) in the LCID value defined in the relevant technology, such as an idle value between 35 and 44; in other words, the value range of the LCID may be 35 to 44, corresponding to the type of the MAC CE being a MAC CE for HARQ feedback (i.e., HARQ_feedback MAC CE). In actual application, the second information may also include an extended LCID (eLCID), and the eLCID may indicate that the type of the MAC CE is a MAC CE for HARQ feedback. Here, the eLCID can be implemented using 33 (corresponding to a two-byte eLCID field) or 34 (corresponding to an eight-bit eLCID field) in the LCID value defined in the relevant technology; in other words, the value of the eLCID can be 33 or 34, and the corresponding MAC CE type is a MAC CE for HARQ feedback (i.e., HARQ_feedback MAC CE).

In one embodiment, the first information may include at least one of the following:

The identifier of the at least one HARQ process; that is, the identifier of the at least one first HARQ process, or the identifiers of the at least one first HARQ process and the at least one second HARQ process;

data transmission status of the at least one HARQ process;

an identifier of a data transmission status of the at least one HARQ process;

The number of HARQ processes corresponding to the first information (which can be expressed as Process Number in English).

In actual application, the identifier of the HARQ process may include an ID (PID, Process ID) of the HARQ process.

Alternatively, the identifier of the HARQ process may include information capable of indicating a PID,

For example, considering that the relevant technology gives the definition of the time slot (Slot) n in which the network device sends downlink data in the physical downlink shared channel (PDSCH) and the HARQ feedback time slot (Slot) n+K of the ACK/NACK sent by the network device receiving the terminal, K can be understood as the time offset from the downlink data to the uplink feedback, and can be expressed as dl-DataToUL-ACK, the value of dl-DataToUL-ACK can be 0~15, that is, K=0~15slot, the value of slot can be determined based on different sub-carrier spacings (SCS, Sub-Carrier Space), and a subframe (subFrame, usually 1 millisecond (ms)) corresponding to different SCSs contains different numbers of slots. If a subFrame contains one slot, the length of each slot is 1ms, and if a subFrame contains two slots, the length of each slot is 0.5ms; and, considering that the network device and the terminal can both know the association between K and PID during data transmission, the identifier of the HARQ process can be represented by K.

Based on this, in one embodiment, the identifier of the HARQ process may be represented by a time offset K from the transmitting end device sending downlink data to the receiving end device sending uplink data and/or performing uplink feedback.

Here, it can be understood that, in the case where the transmitting end device sends downlink data, the receiving end device sends uplink data and/or performs uplink feedback, the transmitting end device may include a network device, and the receiving end device may include a terminal. Exemplarily, as shown in FIG1 , in the case where the transmitting end device includes a network device and the receiving end device includes a terminal, the MAC CE fed back by the terminal in the same slot can indicate the data transmission status of up to 8 HARQ processes.

In one embodiment, the identifier of the data transmission status may include one of the following:

A first identifier, where the first identifier indicates that the feedback corresponding to the data packet currently transmitted by the HARQ process is NACK;

A second identifier, where the second identifier indicates that the feedback corresponding to the data packet currently transmitted by the HARQ process is ACK;

A third identifier, wherein the third identifier indicates that feedback corresponding to a data packet currently transmitted and a data packet last transmitted in the HARQ process are both NACK;

A fourth identifier, wherein the fourth identifier indicates that the feedback corresponding to the data packet currently transmitted in the HARQ process is ACK, and the feedback corresponding to the data packet last transmitted is NACK.

The first identifier and the second identifier may be understood as identifiers of the data transmission status of the second HARQ process; and the third identifier and the fourth identifier may be understood as identifiers of the data transmission status of the first HARQ process.

In actual application, when the identifier of the data transmission status includes the third identifier or the fourth identifier, that is, when the first information indicates the data transmission status of the at least one first HARQ process, or it can be understood that when the receiving device determines that the sending device has made an incorrect judgment on the data transmission status of the HARQ process, after the sending device receives the MAC CE containing the first information, it can check whether it has made an incorrect judgment on the data transmission status of the HARQ process based on the first information.

Specifically, for each HARQ process indicated by the first information, when the identifier of the data transmission status of the HARQ process includes the third identifier or the fourth identifier, the transmitting device can determine whether the data packet currently transmitted by the HARQ process is the same as the last transmitted data packet, that is, determine whether the data packet currently transmitted by the HARQ process is a new data packet or a retransmitted data packet.

In the case where the data packet currently transmitted by the HARQ process is the same as the data packet last transmitted, that is, in the case where the data packet currently transmitted by the HARQ process is a retransmitted data packet, the transmitting device can use the third identifier or the fourth identifier to determine the feedback corresponding to the data packet last transmitted by the HARQ process; if the identifier of the data transmission status includes the third identifier, the transmitting device can determine that the feedback corresponding to the data packet last transmitted by the HARQ process is NACK, and determine that its own judgment on the data transmission status of the HARQ process is correct, and the data packet currently transmitted by the HARQ process is indeed a data packet that needs to be retransmitted; if the identifier of the data transmission status includes the fourth identifier, the transmitting device can determine that the feedback corresponding to the data packet last transmitted by the HARQ process is ACK, and determine that its own judgment on the data transmission status of the HARQ process is wrong, and the data packet currently transmitted by the HARQ process is actually a data packet that does not need to be retransmitted.

When the data packet currently transmitted by the HARQ process is different from the data packet previously transmitted, that is, when the data packet currently transmitted by the HARQ process is a new data packet, the transmitting device can use the third identifier or the fourth identifier to determine the feedback corresponding to the data packet currently transmitted by the HARQ process, that is, the transmitting device can determine that the feedback corresponding to the data packet currently transmitted by the HARQ process is NACK; at the same time, the transmitting device can determine that its own judgment on the data transmission status of the HARQ process is correct.

In this way, it can be seen from the above description that the sending end device realizes the verification of whether it has made an erroneous judgment on the data transmission status of the HARQ process based on the first information, thereby further ensuring the realization of error-free transmission of air interface data based on the HARQ mechanism, thereby further improving the robustness of the air interface.

In actual application, the specific implementation of the first identifier, the second identifier, the third identifier and the fourth identifier can be set according to the requirements. For example, for the MCE CE shown in Figure 1, the MAC CE can indicate the data transmission status of 8 HARQ processes, and the data transmission status corresponding to each K can occupy 2 bits (bits), that is, the length of the identifier of each data transmission status can be 2 bits, then the first identifier can be implemented by 00, the second identifier can be implemented by 01, the third identifier can be implemented by 10, and the fourth identifier can be implemented by 11.

In actual application, in order to reduce system overhead, the receiving device may send a MAC CE containing the first information to the sending device at a time defined in the relevant technology when data and/or feedback needs to be sent to the sending device.

Based on this, in one embodiment, sending the MAC CE to the transmitting end device may include:

At the moment of sending uplink data and/or performing uplink feedback, the MAC CE is sent to the transmitting end device.

Here, it can be understood that, in the case where the receiving end device sends uplink data and/or performs uplink feedback, the sending end device may include a network device, and the receiving end device may include a terminal.

In actual application, the receiving end device sends uplink data and/or performs uplink feedback, which can be understood as the terminal needs to send uplink data and/or perform uplink feedback to the network device according to the timing relationship specified by the relevant technology, the dynamic indication of the network device, and its own business needs. In addition, the receiving end device performs uplink feedback, which can be understood as the terminal uses the traditional HARQ mechanism to send ACK/NACK to the network device.

In actual application, factors such as the dynamic indication of network equipment and the business needs of the terminal itself are taken into consideration.

The receiving end device may not have the need to send uplink data and/or perform uplink feedback at each time of sending uplink data and/or performing uplink 5 feedback specified in the relevant technology. Therefore, the at least one HARQ process indicated by the first information can be understood as a valid HARQ process, that is, a HARQ process with a data transmission demand; in other words, the K included in the MAC CE (such as the MAC CE shown in Figure 1) can be a valid K, and the valid K can be determined based on the network device and the terminal sending downlink data.

The dynamic indication at the time and the business needs of the terminal are determined by factors such as the terminal. Exemplarily, for the MCE0CE shown in Figure 1, only K#0 may be valid, that is, the HARQ process corresponding to K#0 is valid, or it can be understood that there is data to be transmitted in the HARQ process corresponding to K#0, or it can be understood that there is a need to feedback the data transmission status of the HARQ process corresponding to K#0; or, K#0, K#1, K#2 and K#3 may be valid, that is, the HARQ processes corresponding to K#0, K#1, K#2 and K#3 are valid, or it can be understood that there is data to be transmitted in the HARQ processes corresponding to K#0, K#1, K#2 and K#3, or it can be understood that there is a need to feedback the data transmission status of the HARQ processes corresponding to K#0, K#1, K#2 and K#3.

Based on this, in one embodiment, the at least one HARQ process is a HARQ process with downlink data within a first time range, and the first time range is the time between the last time uplink data was sent and/or uplink feedback was performed and the current time when uplink data was sent and/or uplink feedback was performed.

The first time range is associated with a time offset K from the transmitting end device sending downlink data to the receiving end device sending uplink data and/or performing uplink feedback.

Among them, the at least one HARQ process is a HARQ process with downlink data within the first time range, which can be understood as the at least one HARQ process being a valid HARQ process, or it can be understood as the at least one HARQ process being a HARQ process with a need to feedback data transmission status.

5 In actual application, the first time range can be implemented by a time slot, and the association between the first time range and K can be determined based on the timing relationship specified in the relevant technology. Exemplarily, for the MCE CE shown in Figure 1, in the case of uplink time slot slot = 2, according to the timing relationship corresponding to the downlink and uplink specified in the relevant technology, the K that needs to be fed back when slot = 2 is 2, 3 and 5, then at most the timing n calculated by K#2, K#3 and K#5 in the MAC CE sent at this moment is valid, that is, only the HARQ processes corresponding to K#2, K#3 and K#5 are valid; at the same time, if the system only sends downlink data at K#3 and K#5, then the valid K at this time is only K#3 and K#5. In addition, it can be understood that both the transmitting end device and the receiving end device can identify whether the K in the MCE CE is valid according to the provisions of the relevant technology, that is, identify whether the HARQ process indicated by the first information is valid.

In one embodiment, sending the MAC CE to the transmitting end device may include:

The MAC CE is sent to the transmitting end device on the uplink radio resources; that is, the MAC CE is sent to the transmitting end device on the uplink radio resources at the moment of sending uplink data and/or performing uplink feedback.

Among them, the uplink wireless resources may include uplink wireless resources pre-allocated by the network side. Exemplarily, the network device (the sending end device in this case) can synchronously complete the allocation of scheduling resources when sending downlink scheduling data, that is, allocate uplink wireless resources to the MAC CE.

In actual application, the uplink wireless resources may also include a PUSCH for sending uplink data and/or performing uplink feedback.

Based on this, in one embodiment, sending the MACCE to the transmitting end device on the uplink radio resource may include:

Through the PUSCH used for sending uplink data and/or performing uplink feedback, the corresponding uplink data and/or feedback data and the MAC CE are simultaneously sent to the transmitting device; in other words, the corresponding uplink data and feedback data and the MAC CE are simultaneously sent to the transmitting device, or the corresponding uplink data and the MAC CE are simultaneously sent to the transmitting device, or the corresponding feedback data and the MAC CE are simultaneously sent to the transmitting device.

Specifically, in actual application, for a MAC CE containing the first information that needs to be sent to the transmitting device, the receiving device can determine whether the PUSCH exists at the corresponding uplink moment (such as the corresponding slot). If so, the MAC CE can be sent on the PUSCH; in other words, the MAC CE can be carried by the PUSCH. In addition, when the MAC CE is sent simultaneously with other data carried on the PUSCH (uplink data and/or data for uplink feedback), the MAC CE can be included in the MAC PDU (i.e., the TB carried on the PUSCH); or, the MAC CE and other data carried on the PUSCH can be transmitted separately in the same PUSCH resource block using different coding and/or modulation methods.

Accordingly, an embodiment of the present application further provides an information transmission method, which is applied to a sending end device, comprising:

A MAC CE sent by a receiving device is received, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

In one embodiment, when the identifier of the data transmission status includes the third identifier or the fourth identifier, the method may further include:

In the case that the data packet currently transmitted by the HARQ process is the same as the data packet last transmitted, the third identifier or the fourth identifier is used to determine the feedback corresponding to the data packet last transmitted by the HARQ process.

In one embodiment, when the identifier of the data transmission status includes the third identifier or the fourth identifier, the method may further include:

When the data packet currently transmitted by the HARQ process is different from the data packet previously transmitted, the third identifier or the fourth identifier is used to determine feedback corresponding to the data packet currently transmitted by the HARQ process.

In one embodiment, the receiving a MAC CE sent by a receiving end device may include:

Receive the MACCE sent by the receiving end device when sending uplink data and/or performing uplink feedback.

In one embodiment, the receiving the MAC CE sent by the receiving end device at the moment of sending uplink data and/or performing uplink feedback may include:

Receive the MAC CE sent by the receiving end device on the uplink wireless resource when sending uplink data and/or performing uplink feedback.

In one embodiment, the receiving the MAC CE sent by the receiving end device on the uplink radio resource when sending uplink data and/or performing uplink feedback includes:

The receiving device receives the corresponding uplink data and/or feedback data and the MAC CE simultaneously sent by the receiving end device through the PUSCH used for sending uplink data and/or performing uplink feedback at the moment of sending uplink data and/or performing uplink feedback.

Accordingly, an embodiment of the present application further provides an information transmission method, as shown in FIG2 , the method comprising:

Step 201: The receiving end device sends a MAC CE to the transmitting end device, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process;

Step 202: The transmitting end device receives the MAC CE sent by the receiving end device.

In the information transmission method provided by the embodiment of the present application, the receiving device sends a MAC CE to the transmitting device, and the transmitting device receives the MAC CE sent by the receiving device, wherein the MAC CE includes first information, and the first information indicates the data transmission status of at least one HARQ process. In the scheme provided by the embodiment of the present application, the receiving device feeds back the data transmission status of at least one HARQ process to the transmitting device through the MAC CE, that is, the transmitting device needs to demodulate and decode the MAC CE before obtaining the data transmission status of at least one HARQ process, thereby improving the accuracy of the transmitting device in detecting the data transmission status of the HARQ process, and further enabling the transmitting device to accurately determine whether the data needs to be retransmitted according to the data transmission status of the HARQ process, thereby realizing the unerring transmission of air interface data based on the HARQ mechanism, and improving the robustness of the air interface.

In addition, in various embodiments of the present application, a new MAC CE format (such as the MACCE shown in Figure 1) is used to provide a clear indication (i.e., the first information) for the retransmission of the data packet, which can achieve error-free data transmission. In other words, it can enable the HARQ process of the receiving device and the transmitting device to obtain the data transmission status without error.

Third, in various embodiments of the present application, the transmitting device can verify whether it has made an erroneous judgment on the data transmission status of the HARQ process based on the first information, thereby further ensuring the realization of error-free transmission of air interface data based on the HARQ mechanism, thereby further improving the robustness of the air interface.

Fourth, in various embodiments of the present application, since the problem that data retransmission cannot be accurately implemented in the HARQ mechanism can be solved without the need for an ARQ mechanism, the ARQ function can be deleted from the protocol stack function as required, thereby reducing the complexity of the protocol stack function. At the same time, since a MAC PDU usually carries multiple RLC PDUs (i.e., MAC SDUs), if the receiving device uses the ARQ mechanism to feedback the data transmission status to the transmitting device, it is necessary to feedback an ACK/NACK for each RLC PDU; while the receiving device feeds back the data transmission status of the HARQ process to the transmitting device through the MAC CE, it only needs to feedback an ACK/NACK for one MAC PDU; therefore, compared with the ARQ mechanism, the solution provided in the embodiment of the present application can save the overhead of ACK/NACK feedback, that is, it can reduce the resource consumption of feedback ACK/NACK.

Fifth, in various embodiments of the present application, since the MAC CE containing the first information is sent at the time of sending uplink data and/or performing uplink feedback, the system overhead is not increased and resources can be saved.

In order to implement the method on the receiving end device side of the embodiment of the present application, the embodiment of the present application further provides an information transmission device, which is arranged on the receiving end device, as shown in FIG3, and the device includes:

The first sending unit 301 is configured to send a MAC CE to a transmitting end device, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

In one embodiment, the first sending unit 301 is further configured to send the MAC CE to the transmitting end device when sending uplink data and/or performing uplink feedback.

In one embodiment, the first sending unit 301 is further configured to send the MAC CE to the transmitting end device on an uplink wireless resource when sending uplink data and/or performing uplink feedback.

In one embodiment, the first sending unit 301 is also used to send corresponding uplink data and/or feedback data and the MAC CE to the transmitting end device at the same time through the PUSCH used to send uplink data and/or uplink feedback when sending uplink data and/or performing uplink feedback.

In one embodiment, as shown in FIG3 , the device may further include:

The first receiving unit 302 is configured to receive downlink data sent by the sending end device.

In actual application, the first sending unit 301 and the first receiving unit 302 can be implemented by a communication interface in the receiving end device.

In order to implement the method on the transmitting end device side of the embodiment of the present application, the embodiment of the present application further provides an information transmission device, which is arranged on the transmitting end device, as shown in FIG4 , and the device includes:

The second receiving unit 401 is configured to receive a MAC CE sent by a receiving end device, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

In one embodiment, as shown in FIG4 , the device may further include:

The second processing unit 402 is used to determine the feedback corresponding to the data packet last transmitted by the HARQ process by using the third identifier or the fourth identifier when the identifier of the data transmission status includes the third identifier or the fourth identifier and the data packet currently transmitted by the HARQ process is the same as the data packet last transmitted.

In one embodiment, the second processing unit 402 is further used to determine the feedback corresponding to the data packet currently transmitted by the HARQ process using the third identifier or the fourth identifier when the identifier of the data transmission status includes the third identifier or the fourth identifier and the data packet currently transmitted by the HARQ process is different from the data packet previously transmitted.

In one embodiment, the second receiving unit 401 is further configured to receive the MAC CE sent by the receiving end device when sending uplink data and/or performing uplink feedback.

In one embodiment, the second receiving unit 401 is further configured to receive the MAC CE sent by the receiving end device on an uplink wireless resource when the receiving end device sends uplink data and/or performs uplink feedback.

In one embodiment, the second receiving unit 401 is further used to receive the corresponding uplink data and/or feedback data and the MAC CE sent simultaneously by the receiving end device through the PUSCH used to send uplink data and/or perform uplink feedback when the uplink data is sent and/or uplink feedback is performed.

In one embodiment, as shown in FIG4 , the device may further include:

The second sending unit 403 is used to send downlink data to the receiving end device.

In actual application, the second receiving unit 401 and the second sending unit 403 can be implemented by a communication interface in the sending end device; the second processing unit 402 can be implemented by a processor in the sending end device.

It should be noted that: the information transmission device provided in the above embodiment only uses the division of the above program modules as an example when performing information transmission. In actual applications, the above processing can be assigned to different program modules as needed, that is, the internal structure of the device is divided into different program modules to complete all or part of the processing described above. In addition, the information transmission device provided in the above embodiment and the information transmission method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, which will not be repeated here.

Based on the hardware implementation of the above program modules, and in order to implement the method on the receiving end device side of the embodiment of the present application, the embodiment of the present application further provides a receiving end device, as shown in FIG5 , the receiving end device 500 includes:

The first communication interface 501 is capable of exchanging information with a sending end device;

A first processor 502, connected to the first communication interface 501, to implement information interaction with the sending end device, and used to execute the method provided by one or more technical solutions on the receiving end device side when running the computer program;

A first memory 503 , in which the computer program is stored.

Specifically, the first communication interface 501 is used to send a MAC CE to a transmitting end device, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

In one embodiment, the first communication interface 501 is further configured to send the MAC CE to the transmitting end device when sending uplink data and/or performing uplink feedback.

In one embodiment, the first communication interface 501 is further configured to send the MAC CE to the transmitting end device on an uplink wireless resource when uplink data is sent and/or uplink feedback is performed.

In one embodiment, the first communication interface 501 is also used to send corresponding uplink data and/or feedback data and the MAC CE to the transmitting device at the same time through the PUSCH used to send uplink data and/or uplink feedback when sending uplink data and/or performing uplink feedback.

In one embodiment, the first communication interface 501 is further used to receive downlink data sent by the sending end device.

It should be noted that the specific processing process of the first communication interface 501 can be understood by referring to the above method, which will not be repeated here.

Of course, in actual application, the various components in the receiving end device 500 are coupled together through the bus system 504. It can be understood that the bus system 504 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 504 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, various buses are marked as bus system 504 in FIG. 5.

The first memory 503 in the embodiment of the present application is used to store various types of data to support the operation of the receiving device 500. Examples of such data include: any computer program used to operate on the receiving device 500.

The method disclosed in the above embodiment of the present application can be applied to the first processor 502, or implemented by the first processor 502. The first processor 502 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the first processor 502. The first processor 502 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The first processor 502 can implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, which is located in the first memory 503, and the first processor 502 reads the information in the first memory 503, and completes the steps of the above method in combination with its hardware.

In an exemplary embodiment, the receiving device 500 can be implemented by one or more application-specific integrated circuits (ASICs), DSPs, programmable logic devices (PLDs), complex programmable logic devices (CPLDs), field-programmable gate arrays (FPGAs), general-purpose processors, controllers, microcontrollers (MCUs), microprocessors, or other electronic components to execute the aforementioned method.

Based on the hardware implementation of the above program modules, and in order to implement the method on the sending end device side of the embodiment of the present application, the embodiment of the present application further provides a sending end device, as shown in FIG6 , the sending end device 600 includes:

The second communication interface 601 is capable of exchanging information with a receiving device;

A second processor 602 is connected to the second communication interface 601 to implement information interaction with the receiving device, and is used to execute the method provided by one or more technical solutions of the sending device side when running the computer program;

A second memory 603 , on which the computer program is stored.

Specifically, the second communication interface 601 is used to receive a MAC CE sent by a receiving end device, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

In one embodiment, when the identifier of the data transmission status includes the third identifier or the fourth identifier, the second processor 602 is used to determine the feedback corresponding to the data packet last transmitted by the HARQ process by using the third identifier or the fourth identifier when the data packet currently transmitted by the HARQ process is the same as the data packet last transmitted.

In one embodiment, when the identifier of the data transmission status includes the third identifier or the fourth identifier, the second processor 602 is used to determine the feedback corresponding to the data packet currently transmitted by the HARQ process using the third identifier or the fourth identifier when the data packet currently transmitted by the HARQ process is different from the data packet last transmitted.

In one embodiment, the second communication interface 601 is further used to receive the MAC CE sent by the receiving end device when sending uplink data and/or performing uplink feedback.

In one embodiment, the second communication interface 601 is further used to receive the MAC CE sent by the receiving end device on the uplink wireless resource when sending uplink data and/or performing uplink feedback.

In one embodiment, the second communication interface 601 is also used to receive the corresponding uplink data and/or feedback data and the MAC CE sent simultaneously by the receiving device when sending uplink data and/or performing uplink feedback through the PUSCH used to send uplink data and/or perform uplink feedback.

In one embodiment, the second communication interface 601 is further used to send downlink data to the receiving end device.

It should be noted that the specific processing process of the second communication interface 601 and the second processor 602 can be understood by referring to the above method, which will not be repeated here.

Of course, in actual application, the various components in the transmitting end device 600 are coupled together through the bus system 604. It can be understood that the bus system 604 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 604 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, various buses are marked as bus system 604 in FIG. 6.

The second memory 603 in the embodiment of the present application is used to store various types of data to support the operation of the transmitting end device 600. Examples of such data include: any computer program used to operate on the transmitting end device 600.

The method disclosed in the above embodiment of the present application can be applied to the second processor 602, or implemented by the second processor 602. The second processor 602 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by an integrated logic circuit of the hardware in the second processor 602 or an instruction in the form of software. The second processor 602 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc. The second processor 602 can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiment of the present application. A general-purpose processor may be a microprocessor or any conventional processor, etc. In combination with the steps of the method disclosed in the embodiment of the present application, it can be directly embodied as a hardware decoding processor to execute, or it can be executed by a combination of hardware and software modules in the decoding processor. The software module can be located in a storage medium, which is located in the second memory 603. The second processor 602 reads the information in the second memory 603 and completes the steps of the above method in combination with its hardware.

In an exemplary embodiment, the transmitting device 600 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general purpose processors, controllers, MCUs, Microprocessors, or other electronic components to perform the aforementioned methods.

It can be understood that the memory (first memory 503, second memory 603) of the embodiment of the present application can be a volatile memory or a non-volatile memory, and can also include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), a magnetic random access memory (FRAM), a flash memory, a magnetic surface memory, an optical disc, or a compact disc read-only memory (CD-ROM); the magnetic surface memory can be a disk memory or a tape memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), synchronous static random access memory (SSRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), direct memory bus random access memory (DRRAM). The memory described in the embodiments of the present application is intended to include but is not limited to these and any other suitable types of memory.

In order to implement the method provided in the embodiment of the present application, the embodiment of the present application also provides an information transmission system, as shown in FIG. 7 , the system includes: a receiving end device 701 and a sending end device 702 .

Here, it should be noted that the specific processing procedures of the receiving device 701 and the transmitting device 702 have been described in detail above and will not be repeated here.

In an exemplary embodiment, the embodiment of the present application further provides a storage medium, namely a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 503 storing a computer program, and the computer program can be executed by the first processor 502 of the receiving end device 500 to complete the steps of the aforementioned receiving end device side method. For another example, a second memory 603 storing a computer program can be executed by the second processor 602 of the sending end device 600 to complete the steps of the aforementioned sending end device side method. The computer-readable storage medium can be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface storage, optical disk, or CD-ROM.

It should be noted that: "first", "second", etc. are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims (31)

1. An information transmission method, applied to a receiving end device, comprising:

And transmitting a media access control element (MAC CE) to the transmitting end equipment, wherein the MAC CE contains first information which indicates the data transmission state of at least one hybrid automatic repeat request (HARQ) process.

2. The method of claim 1, wherein the first information comprises at least one of:

an identification of the at least one HARQ process;

A data transmission state of the at least one HARQ process;

an identification of a data transmission state of the at least one HARQ process;

and the number of HARQ processes corresponding to the first information.

3. The method according to claim 2, characterized in that the identification of the HARQ process is represented by a time offset K for the transmitting end device to transmit downlink data to the receiving end device and/or for uplink feedback.

4. The method of claim 2, wherein the identification of the data transmission state comprises one of:

The first identifier characterizes that feedback corresponding to a data packet currently transmitted by the HARQ process is non-acknowledgement (NACK);

The second identifier characterizes that feedback corresponding to the data packet currently transmitted by the HARQ process is Acknowledgement (ACK);

A third identifier, wherein the third identifier characterizes that feedback corresponding to a data packet transmitted currently and a data packet transmitted last in the HARQ process is NACK;

And the fourth identifier characterizes that the feedback corresponding to the data packet transmitted currently by the HARQ process is ACK, and the feedback corresponding to the data packet transmitted last is NACK.

5. The method of claim 1, wherein the at least one HARQ process comprises at least one first HARQ process comprising a HARQ process for which the receiving device determines that the transmitting device is wrong in deciding a data transmission status.

6. The method of claim 5, wherein the at least one HARQ process further comprises at least one second HARQ process, the second HARQ process comprising a HARQ process corresponding to a data packet currently received by the receiving device.

7. The method according to any one of claims 1 to 6, wherein the sending the MAC CE to the sender device includes:

And at the moment of sending uplink data and/or carrying out uplink feedback, sending the MAC CE to the sending end equipment.

8. The method according to claim 7, wherein the at least one HARQ process is a HARQ process in which there is downlink data in a first time range, the first time range being a time interval between a time at which uplink data is transmitted and/or uplink feedback is performed last and a time at which uplink data is currently transmitted and/or uplink feedback is performed, the first time range being associated with a time offset K at which the transmitting end device transmits downlink data to the receiving end device and/or uplink feedback is performed.

9. The method of claim 7, wherein the transmitting the MAC CE to the sender device comprises:

And on uplink wireless resources, the MAC CE is sent to the sending end equipment.

10. The method of claim 9, wherein the sending the MAC CE to the sender device on the uplink radio resource comprises:

and simultaneously sending corresponding uplink data and/or feedback data and the MAC CE to the sending end equipment through a Physical Uplink Shared Channel (PUSCH) used for sending the uplink data and/or carrying out uplink feedback.

11. The method according to any of claims 1 to 6, wherein the MAC CE further comprises second information indicating that the type of the MAC CE is a MAC CE for HARQ feedback.

12. An information transmission method, applied to a transmitting device, comprising:

and receiving the MAC CE sent by the receiving end equipment, wherein the MAC CE contains first information which indicates the data transmission state of at least one HARQ process.

13. The method of claim 12, wherein the first information comprises at least one of:

an identification of the at least one HARQ process;

A data transmission state of the at least one HARQ process;

an identification of a data transmission state of the at least one HARQ process;

and the number of HARQ processes corresponding to the first information.

14. The method according to claim 13, characterized in that the identification of the HARQ process is represented by a time offset K for the transmitting end device to transmit downlink data to the receiving end device and/or for uplink feedback.

15. The method of claim 13, wherein the identification of the data transmission state comprises one of:

The first identifier characterizes that feedback corresponding to a data packet currently transmitted by the HARQ process is NACK;

The second identifier characterizes that the feedback corresponding to the data packet currently transmitted by the HARQ process is ACK;

A third identifier, wherein the third identifier characterizes that feedback corresponding to a data packet transmitted currently and a data packet transmitted last in the HARQ process is NACK;

And the fourth identifier characterizes that the feedback corresponding to the data packet transmitted currently by the HARQ process is ACK, and the feedback corresponding to the data packet transmitted last is NACK.

16. The method according to claim 15, wherein in case the identification of the data transmission state comprises the third identification or a fourth identification, the method further comprises:

And under the condition that the data packet transmitted currently in the HARQ process is the same as the data packet transmitted last, determining feedback corresponding to the data packet transmitted last in the HARQ process by utilizing the third identifier or the fourth identifier.

17. The method according to claim 15, wherein in case the identification of the data transmission state comprises the third identification or a fourth identification, the method further comprises:

and under the condition that the data packet currently transmitted by the HARQ process is different from the data packet transmitted last, determining feedback corresponding to the data packet currently transmitted by the HARQ process by utilizing the third identifier or the fourth identifier.

18. The method of claim 12, wherein the at least one HARQ process comprises at least one first HARQ process comprising a HARQ process for which the receiving device determines that the transmitting device is wrong in deciding a data transmission status.

19. The method of claim 18, wherein the at least one HARQ process further comprises at least one second HARQ process, the second HARQ process comprising a HARQ process corresponding to a data packet currently received by the receiving device.

20. The method according to any one of claims 12 to 19, wherein the receiving the MAC CE transmitted by the receiving end device includes:

and receiving the MAC CE transmitted by the receiving end equipment at the moment of transmitting the uplink data and/or carrying out uplink feedback.

21. The method according to claim 20, wherein the at least one HARQ process is a HARQ process in which there is downlink data in a first time range, the first time range being a time interval between a time at which uplink data is transmitted and/or uplink feedback is performed last and a time at which uplink data is currently transmitted and/or uplink feedback is performed, the first time range being associated with a time offset K at which the transmitting end device transmits downlink data to the receiving end device to transmit uplink data and/or uplink feedback.

22. The method according to claim 20, wherein the receiving the MAC CE transmitted by the receiving device at the time of transmitting uplink data and/or performing uplink feedback includes:

And receiving the MAC CE transmitted on the uplink wireless resource at the moment of transmitting the uplink data and/or carrying out uplink feedback by the receiving end equipment.

23. The method according to claim 22, wherein the receiving the MAC CE transmitted on the uplink radio resource at the time of the receiving end device transmitting uplink data and/or performing uplink feedback includes:

And receiving the time of the receiving end equipment for sending the uplink data and/or carrying out uplink feedback, and simultaneously sending the corresponding uplink data and/or feedback data and the MAC CE through a PUSCH for sending the uplink data and/or carrying out uplink feedback.

24. The method according to any of claims 12 to 19, wherein the MAC CE further comprises second information indicating that the type of the MAC CE is a MAC CE for HARQ feedback.

25. An information transmission apparatus, comprising:

A first sending unit, configured to send a MAC CE to a sender device, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

26. An information transmission apparatus, comprising:

and the second receiving unit is used for receiving the MAC CE sent by the receiving end equipment, wherein the MAC CE contains first information, and the first information indicates the data transmission state of at least one HARQ process.

27. A receiving-end apparatus, characterized by comprising: a first communication interface and a first processor; wherein,

The first communication interface is configured to send a MAC CE to a sender device, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

28. A transmitting-end apparatus, characterized by comprising: a second communication interface and a second processor; wherein,

The second communication interface is configured to receive a MAC CE sent by the receiving end device, where the MAC CE includes first information, and the first information indicates a data transmission state of at least one HARQ process.

29. A receiving-end apparatus, characterized by comprising: a first processor and a first memory for storing a computer program capable of running on the processor,

Wherein the first processor is adapted to perform the steps of the method of any of claims 1 to 11 when the computer program is run.

30. A transmitting-end apparatus, characterized by comprising: a second processor and a second memory for storing a computer program capable of running on the processor,

Wherein the second processor is adapted to perform the steps of the method of any of claims 12 to 24 when the computer program is run.

31. A storage medium having stored thereon a computer program, which when executed by a processor, performs the steps of the method of any of claims 1 to 11 or performs the steps of the method of any of claims 12 to 24.