CN113132071B - Data transmission method, device, related equipment and storage medium - Google Patents

Abstract

The invention discloses a data transmission method, a device, a sending end device, a receiving end device and a storage medium. Wherein, the method includes: at the medium access control (MAC) layer, the transmitting end device uses one or more HARQ processes of a hybrid automatic repeat request (HARQ) entity to copy and send the data packet; wherein, a data packet is in the The data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet.

Description

Data transmission method, device, related equipment and storage medium

technical field

The present invention relates to the field of wireless communication, and in particular, to a data transmission method, device, related equipment and storage medium.

Background technique

In order to improve the transmission rate, a technical scheme of simultaneously performing data transmission on multiple links is proposed. Specifically, from the multi-carrier High Speed Downlink Packet Access (HSDPA, High Speed Downlink Packet Access) in the third generation mobile communication technology (3G) era, to the fourth generation mobile communication technology (4G) and the fifth generation mobile communication technology (5G ) Carrier Aggregation (CA, Carrier Aggregation) and Dual Connectivity (DC, Dual Connectivity)/Multiple Connectivity (MC, Multiple Connectivity), both provide data transmission on multiple links simultaneously for one user equipment (UE). With the introduction of 5G medium and low latency communication (URLLC) services, the method of "duplication" has been widely used in 5G, that is, through CA, DC/MC and other technologies, in different chains The same data packets are sent on the road, so as to obtain the robustness gain of multi-link parallel transmission.

However, in the related art, multiplexing transmission at the medium access control (MAC) layer cannot be implemented.

SUMMARY OF THE INVENTION

In order to solve related technical problems, embodiments of the present invention provide a data transmission method, apparatus, related equipment, and storage medium.

The technical solution of the embodiment of the present invention is realized as follows:

An embodiment of the present invention provides a data transmission method, which is applied to a sending end device, including:

At the MAC layer of the transmitting end device, one or more HARQ processes of a hybrid automatic repeat request (HARQ) entity are used to duplicate and send the data packet; wherein,

The data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet.

In the above scheme, the method also includes:

After receiving the source data packet, one or more HARQ processes are selected for data transmission.

In the above scheme, one or more HARQ processes are used to send data packets on one carrier;

or,

Data packets are sent on multiple carriers using one or more HARQ processes.

In the above scheme, use one or more HARQ processes to send data packets on a CC under CA;

or,

Send packets on multiple CCs under the CA using one or more HARQ processes.

In the above solution, the sending end device is a network device, and when multiple HARQ processes send data packets, the method further includes:

The data sending information of the data packet on the HARQ process transport block (TB) is sent to the receiving end device; the data sending information is used for the receiving end device to determine the receiving mode of the data packet on the HARQ process TB.

In the above solution, the data sending information is sent to the receiving end device in one of the following ways:

Send the data sending information to the receiving end device through downlink control information (DCI);

Send the data sending information to the receiving end device through radio resource control (RRC) signaling;

The data transmission information is sent to the receiving end device through a Media Access Control Control Element (MAC CE).

In the above solution, the sending end device is a terminal, and when multiple HARQ processes send data packets, the method further includes:

Receive the data sending information on the HARQ process TB of the data packet sent by the network device;

Using the data transmission information, the data transmission mode of the data packet on the HARQ process TB is determined.

In the above solution, the data transmission information sent by the network device is received in one of the following ways:

Receive the data sending information sent by the network device through DCI;

Receive the data sending information sent by the network device through RRC signaling;

The data sending information sent by the network device is received through the MAC CE.

The embodiment of the present invention also provides a data transmission method, which is applied to a receiving end device, including:

At the MAC layer of the receiving end device, use one or more HARQ processes of a HARQ entity to receive data packets; wherein,

The data packets received by the HARQ process are the source data packets, or are obtained by duplicating the source data packets.

In the above scheme, use one or more HARQ processes to receive data packets on one carrier;

or,

Data packets are received on multiple carriers using one or more HARQ processes.

In the above scheme, use one or more HARQ processes to send data packets on a CC under CA;

or,

Send packets on multiple CCs under the CA using one or more HARQ processes.

In the above solution, the receiving end device is a terminal, and the method further includes:

Receive the data sending information on the HARQ process TB of the data packet sent by the network device;

Determine the receiving mode of the data packet based on the data transmission related information, and store the data packet received through the multiple HARQ threads in the first buffer;

The data in the first cache is merged.

In the above solution, the data transmission related information sent by the network device is received in one of the following ways:

Receive the data sending information sent by the network device through DCI;

Receive the data sending information sent by the network device through RRC signaling;

The data sending information sent by the network device is received through the MAC CE.

The embodiment of the present invention also provides a data transmission device, which is set on the sending end device, including:

A sending unit, configured to use one or more HARQ processes of one HARQ entity to copy and send the data packet at the MAC layer of the sending end device; wherein,

The data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet.

The embodiment of the present invention also provides a data transmission device, which is characterized in that it is arranged on the receiving end device and includes:

a receiving unit, configured to use one or more HARQ processes of one HARQ entity to receive data packets at the MAC layer of the receiving end device; wherein,

The data packets received by the HARQ process are the source data packets, or are obtained by duplicating the source data packets.

The embodiment of the present invention also provides a sending end device, including: a first processor and a first communication interface; wherein,

The first communication interface is configured to use one or more HARQ processes of one HARQ entity to copy and send data packets at the MAC layer of the transmitting end device; wherein,

A data packet is sent in one or more HARQ processes; the data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet.

The embodiment of the present invention also provides a receiving end device, including: a second processor and a second communication interface; wherein,

The second communication interface is used to receive data packets using one or more HARQ processes of one HARQ entity at the MAC layer of the receiving end device; wherein,

The data packets received by the HARQ process are the source data packets, or are obtained by duplicating the source data packets.

An embodiment of the present invention also provides a sending 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 configured to execute the steps of any method on the side of the transmitting end device when running the computer program.

An embodiment of the present invention further provides a receiver device, including: a second processor and a second memory for storing a computer program that can be run on the processor,

Wherein, the second processor is configured to execute the steps of any one of the methods on the receiving end device side when running the computer program.

An embodiment of the present invention also provides a storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps of any method on the side of the sending end device, or the steps of any method on the side of the receiving end device are implemented. .

In the data transmission method, device, related device, and storage medium provided by the embodiments of the present invention, at the MAC layer of the transmitting end device, the transmitting end device uses one or more HARQ processes of a HARQ entity to copy and send data packets; wherein the HARQ The data packet sent by the process is the source data packet, or is obtained by copying the source data packet; at the MAC layer of the receiving end device, the receiving end device uses one or more HARQ processes of a HARQ entity to receive the data packet, through a One or more HARQ processes of the HARQ entity implement multiplexing and transmission of a data packet at the MAC layer, so that the multiplexing and transmission of the MAC layer can be implemented.

Description of drawings

1 is a schematic diagram of a downlink layer 2 (L2) architecture after CA is configured;

FIG. 2 is a schematic diagram of an uplink L2 architecture after CA is configured;

FIG. 3 is a schematic flowchart of a data transmission method on a device side of a transmitting end according to an embodiment of the present invention;

4 is a schematic flowchart of a data transmission method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a PRB for scheduling allocation according to an application embodiment of the present invention;

6 is a schematic diagram of a downlink L2 architecture according to an application embodiment of the present invention;

FIG. 7 is a schematic diagram of an uplink L2 architecture according to an application embodiment of the present invention;

FIG. 8 is a functional schematic diagram of a downlink MAC scheduler according to an application embodiment of the present invention;

FIG. 9 is a functional schematic diagram of an uplink MAC scheduler according to an application embodiment of the present invention;

10 is a schematic structural diagram of a data transmission apparatus according to an embodiment of the present invention;

11 is a schematic structural diagram of another data transmission apparatus according to an embodiment of the present invention;

12 is a schematic structural diagram of a transmitting end device according to an embodiment of the present invention;

13 is a schematic structural diagram of a receiving end device according to an embodiment of the present invention;

FIG. 14 is a schematic structural diagram of a data transmission system according to an embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

In the related art, the same data packets are sent on different links through technologies such as CA and DC/MC. Request (HARQ, Hybrid Automatic Repeat reQuest) entities are independent. Figure 1 shows the downlink L2 architecture after CA is configured, and Figure 2 shows the uplink L2 architecture after CA is configured. As can be seen from Figures 1 and 2, in the CA scenario, whether it is uplink or downlink, each component A carrier (CC, Component Carrier) (a component carrier of a CA) corresponds to one HARQ entity. In DC/MC, through the separated RB (RB split) method, each leg (Leg) (each link is called a leg) is divided into different base stations, so the HARQ entity used on each leg is also independent.

Since an independent HARQ entity is used for data transmission, only one HARQ process is used to send one or two data packets (double codewords) each time data is transmitted to the user, but the two codewords correspond to two different data packets , so this method cannot realize the multiplexing transmission of the MAC layer (it can also be understood as copying transmission).

Based on this, in various embodiments of the present invention, multiplexing and transmission of a data packet is implemented at the MAC layer through one or more HARQ processes of a HARQ entity.

Wherein, the multiplexing transmission can also be understood as copying transmission.

When multiplexed transmission is performed at the MAC layer, only the lower layers (including the physical layer (PHY) layer) perform transmission-related processing for each data packet individually, while the higher layers (Radio Link Control (RLC), PDCP) do not Data packets are sent for related processing.

An embodiment of the present invention provides a data transmission method, which is applied to a sending end device. As shown in FIG. 3 , the method includes:

Step 301: After receiving the source data packet, select one or more HARQ processes of a HARQ entity for copying and sending of the data packet;

Step 302: At the MAC layer of the transmitting end device, use one or more HARQ processes of one HARQ entity to copy and send the data packet.

Among them, because it is copied and sent, it can be understood that a data packet (that is, a data packet that needs to be copied and transmitted) is sent on one or more HARQ processes; the data packet sent by the HARQ process is the source data packet or the source data packet. The data packet obtained by copying the data packet.

Here, in practical application, the transmitting end device may be a network device, specifically a base station, such as a next-generation node B (gNB), etc. Correspondingly, the receiving end device that receives the data packet is a terminal; in this case, Send downlink data. Of course, the sending end device may also be a terminal; correspondingly, the receiving end device that receives the data packet is a network device, and in this case, the uplink data is sent.

In practical application, in step 301, the transmitting end device may select one or more HARQ processes from the available HARQ processes for copying and sending as required.

The duplication sending refers to: duplicating the source data packet to obtain one or more duplicated data packets; and sending the source data packet and/or the duplicated data packet to the receiver. The source packet and the copied packet are exactly the same.

The data packet of the MAC layer needs to be sent to the physical (PHY) layer, therefore, the data packet may be called a transport block (TB, Transport Block), and TB is relative to the PHY layer. Specifically, for the MAC entity, the MAC entity transmits the received service data unit (SDU) of the MAC layer to obtain the protocol data unit (PDU) of the MAC layer. At the PHY layer, for the PHY entity , the received PDU is the PDU sent by the MAC entity, which is called a TB at this time. Before the PHY layer performs encoding, the TB can be called a codeword (codeword).

In an embodiment, the transmitting end device may use one or more HARQ processes to send data packets on one carrier; of course, one or more HARQ processes may also be used to send data packets on multiple carriers.

In an embodiment, the sender may use one or more HARQ processes to send data packets on one CC under the CA; and may also use one or more HARQ processes to send data packets on multiple CCs under the CA.

In practical application, when multiple HARQ processes send data packets, the receiving end device needs to know the sending information of the data packets, so as to be able to receive the data packets accurately.

Based on this, in an embodiment, the sending end device is a network device, and when multiple HARQ processes send data packets, the method further includes:

The data sending information of the data packet on the HARQ process TB is sent to the receiving end device; the data sending information is used for the receiving end device to determine the receiving mode of the data packet on the HARQ process TB.

Wherein, the data sending information can be sent to the receiving end device in one of the following ways:

Send the data sending information to the receiving end device through DCI;

Send the data sending information to the receiving end device through RRC signaling;

The data sending information is sent to the receiving end device through the MAC CE.

Here, in practical application, when the data transmission information is sent through the MAC CE, it needs to be sent before the data packet is sent.

Correspondingly, when the sending end device is a terminal, the network device needs to configure the data sending information for the terminal.

Based on this, in an embodiment, when multiple HARQ processes send data packets, the method may further include:

Receive the data sending information on the HARQ process TB of the data packet sent by the network device;

Using the data transmission information, the data transmission mode of the data packet on the HARQ process TB is determined.

In practical application, the data sending information sent by the network device is received in one of the following ways:

Receive the data sending information sent by the network device through DCI;

Receive the data sending information sent by the network device through RRC signaling;

The data sending information sent by the network device is received through the MAC CE.

Here, when the network device sends the data sending information through DCI, the terminal receives the data sending information through DCI; when the network device sends the data sending information through RRC signaling, the terminal receives the data sending information through RRC signaling the data sending information; when the network device sends the data sending information through the MAC CE, the terminal receives the data sending information through the MAC CE.

In practical application, the RRC signaling may be an RRC connection reconfiguration message or the like.

Correspondingly, an embodiment of the present invention also provides a data transmission method, which is applied to a receiving end device, including:

At the MAC layer of the receiving end device, use one or more HARQ processes of a HARQ entity to receive data packets; wherein,

The data packets received by the HARQ process are the source data packets, or are obtained by duplicating the source data packets.

Here, when the transmitting end device uses a HARQ process of a HARQ entity to send a data packet, the receiving end device uses a HARQ process of a HARQ entity to receive the data packet; when the transmitting end device uses a plurality of HARQ processes of a HARQ entity to send data packets When receiving data packets, the receiving end device uses multiple HARQ processes of one HARQ entity to receive the data packets. That is, the number of HARQ processes used by the transmitting end device is the same as the number of HARQ processes used by the receiving end device.

In one embodiment, the receiving end device uses one or more HARQ processes to receive data packets on one carrier;

or,

Data packets are received on multiple carriers using one or more HARQ processes.

Wherein, when the transmitting end device uses one or more HARQ processes to send data packets on one carrier, the receiving end device uses one or more HARQ processes to receive data packets on one carrier. When using one or more HARQ processes to transmit data packets on multiple carriers, the receiving end device uses one or more HARQ processes to receive data packets on multiple carriers.

In an embodiment, when the receiving end device is a terminal, the method further includes:

Receive the data sending information on the HARQ process TB of the data packet sent by the network device;

Determine the receiving mode of the data packet based on the data transmission related information, and store the data packet received through the multiple HARQ threads in the first buffer;

The data in the first cache is merged.

Correspondingly, when the receiving end device is a network device, the data packets received through the HARQ thread are stored in the second buffer; the data in the second buffer is combined.

An embodiment of the present invention also provides a data transmission method, as shown in FIG. 4 , the method includes:

Step 401: At the MAC layer of the transmitting end device, the transmitting end device uses one or more HARQ processes of a HARQ entity to copy and send the data packet;

Wherein, a data packet is sent on one or more HARQ processes; the data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet.

Step 402: At the MAC layer of the receiving end device, the receiving end device uses one or more HARQ processes of one HARQ entity to receive data packets.

The data packet received by the HARQ process is the source data packet, or is obtained by copying the source data packet.

It should be noted that: the specific processing procedures of the sending end device and the receiving end device have been described in detail above, and will not be repeated here.

In the data transmission method provided by the embodiment of the present invention, at the MAC layer of the transmitting end device, the transmitting end device uses one or more HARQ processes of a HARQ entity to send data packets; wherein, the data packets sent by the HARQ process are source data packets, or It is obtained by duplicating the source data packet; at the MAC layer of the receiving end device, the receiving end device uses one or more HARQ processes of a HARQ entity to receive data packets, and uses one or more HARQ processes of a HARQ entity to receive data packets in the MAC layer. The layer implements multiplexing transmission of a data packet, thus, the multiplexing transmission of the MAC layer can be realized.

The present invention will be further described in detail below in conjunction with application examples.

In this application embodiment, when allocating air interface resources, according to a plurality of individual data packets, on a transmission opportunity (such as a time slot), each data packet is allocated an independent time-frequency domain resource, and the resource corresponding to the data packet is There is no overlap between. Figure 5 shows a schematic diagram of scheduling allocated PRBs in one slot. As can be seen from Figure 5, each data packet corresponds to one PRB. In practical applications, the PRBs used for multiplexing can be allocated to multiple time-frequency domain positions in the entire resource bandwidth.

In practical applications, the resources of each data packet can be allocated as needed. For example, the location for allocating each PRB can be selected according to the measured channel quality of the terminal in the entire system bandwidth. For example, the system bandwidth of 100MHz is a large bandwidth, and the quality of transmission and reception of users in each RE is different. Therefore, according to the system measurement, multiple corresponding PRB blocks are allocated to the terminal.

Based on this, in practical application, the corresponding resource used for sending each data packet may be at least one PRB or at least one resource element (RE).

The PRB is from the perspective of the PHY, and from the perspective of the radio bearer, the PRB may be called a resource block (RB, Resource Block).

In this application embodiment, Figure 6 shows the downlink L2 architecture (CA and non-CA), and Figure 7 shows the uplink L2 architecture (CA and non-CA). It can be seen from Figures 6 and 7 that no matter In the CA scenario or the non-CA scenario, there is only one HARQ entity in each direction in the uplink and downlink directions, and one or more HARQ processes can be used in one reception and transmission process, if multiplexing is enabled. Therefore, one HARQ process can carry multiple multiplexed data packets, or multiple HARQ processes can carry identical data packets.

The process of HARQ process multiplexing and transmission is described below from the downlink direction and the uplink direction.

First, the downward direction is described.

In the downlink direction, as shown in FIG. 8 , there is only one HARQ entity regardless of data transmission between CCs of CA, data transmission within one CC of CA, or data transmission within a carrier under non-CA. At the same time, when the network side sends downlink data to a UE on each carrier (including the CC under CA and the non-CA carrier), the process of using the HARQ entity may use one HARQ process or multiple HARQ processes. , such as a CC a process. The scheduler of the MAC layer on the base station side selects different time-frequency domain resources during scheduling to send the same data packet at the same time. Different time-frequency resources are used for data transmission for uplink and downlink assignments.

The scheduler uniformly manages the HARQ of the UE, and then performs scheduling and priority management on each UE separately on each CC. When scheduling to a UE, the HARQ information used when sending data to the UE is obtained from the unified HARQ, including Process ID. At this time, the HARQ entity can allocate the same HARQ process to the UE on each carrier according to the set decision method, and can also allocate different HARQ processes. This method is not only applicable to the sending of ordinary data packets, but also applicable to the sending of duplicated data packets at the MAC layer. Wherein, when it is necessary to multiplex and transmit the data packets of the UE, one HARQ process may be used to transmit data between CCs (multiple CCs are sent) or within one CC, or different HARQ processes may be used to transmit data between CCs or between CCs send data within. Of course, if it is a common data packet, it can also be sent between CCs or within a CC in one HARQ process, or different HARQ processes can be used to send data between CCs or within a CC.

Among them, for the inter-CC transmission of CA, when only one HARQ process is used, if the data packets on different CCs are not the same, the receiving end (that is, the UE side, the receiving end in the downlink direction is the UE) sets the corresponding setting on each CC. receive buffer. If the data packets sent on different CCs are exactly the same, that is, the data packets are multiplexed, only one receive buffer is set at the receiving end, and the data packets received from each CC need to be merged and translated in the buffer. code processing, and the information of data packet multiplexing (that is, data transmission information) needs to be carried in the HARQ information carried by the physical downlink control channel (PDCCH), including the identifier for enabling data packet multiplexing, the time of each multiplexing data packet frequency resource information, modulation information, etc.

When using multiple HARQ processes, when the data packets on different CCs are different, the receiving end (that is, the UE side, the receiving end in the downlink direction is the UE) sets the corresponding receive buffer on each CC, that is, for each CC. Each HARQ process sets the receiving buffer; when the data packets sent on different CCs are exactly the same, that is, the data packets are multiplexed, only one receiving buffer is set at the receiving end, and the data packets received from each CC are It is necessary to perform combining and decoding processing in this buffer, and the information of data packet multiplexing needs to be carried in the HARQ information carried by the PDCCH, including the identification of starting data packet multiplexing, the time-frequency resource information of each multiplexed data packet, the modulation information, etc.

For the transmission in the CC of CA, when only one HARQ process is used, if the data packets on the CC are sent normally, that is, there is no multiplexing (ordinary data packets), the receiving end (that is, the UE side, the downlink direction The receiving end is the UE) and sets the corresponding receiving buffer on the CC. If the data packets sent on the CC are exactly the same, that is, the data packets are multiplexed, only one receive buffer is set at the receiving end, and the data packets received from the CC need to be combined and decoded in the buffer. processing, and the information of data packet multiplexing (that is, data transmission information) needs to be carried in the HARQ information carried by the PDCCH, including the identification of starting data packet multiplexing, the time-frequency resource information of each multiplexed data packet, modulation information, etc. .

When multiple HARQ processes are used, when the data packets on the CC are sent normally, that is, there is no multiplexing (normal data packets), the receiving end (ie, the UE side, the receiving end in the downlink direction is the UE) is on this CC. Set the corresponding receive buffer on the CC. When the data packets sent on the CC are exactly the same, that is, the data packets are multiplexed, only one receiving buffer is set at the receiving end, and the data packets received from the CC must be merged and translated in the buffer. code processing, and the information of data packet multiplexing (that is, data transmission information) needs to be carried in the HARQ information carried by the PDCCH, including the identifier for starting the data packet multiplexing, the time-frequency resource information of each multiplexed data packet, and the modulation information. Wait.

For non-CA single-carrier transmission, only one HARQ process is used. If the data packet on the CC is normal transmission, that is, there is no multiplexing (ordinary data packet), the receiving end (that is, the UE side, the downlink direction The receiving end is the UE) and sets the corresponding receiving buffer on the CC. If the data packets sent on the CC are exactly the same, that is, the data packets are multiplexed, only one receive buffer is set at the receiving end, and the data packets received from the CC need to be combined and decoded in the buffer. processing, and the information of data packet multiplexing (that is, data transmission information) needs to be carried in the HARQ information carried by the PDCCH, including the identification of starting data packet multiplexing, the time-frequency resource information of each multiplexed data packet, modulation information, etc. .

Using multiple HARQ processes, if the TB on the CC is normal transmission, that is, there is no multiplexing (normal data packets), the receiving end (ie, the UE side, the receiving end in the downlink direction is the UE) is on the CC. Set the corresponding receive buffer. If the data packets sent on the CC are exactly the same, that is, the data packets are multiplexed, only one receive buffer is set at the receiving end, and the data packets received from the CC need to be combined and decoded in the buffer. processing, and the information of data packet multiplexing (that is, data transmission information) needs to be carried in the HARQ information carried by the PDCCH, including the identification of starting data packet multiplexing, the time-frequency resource information of each multiplexed data packet, modulation information, etc. .

Next, the upward direction is described.

In the uplink direction, since the uplink transmission is sent by the UE to the base station, the uplink transmission only occurs in one UE. Therefore, as shown in FIG. 9 , the HARQ entity is defined in units of UEs. A UE has only one HARQ entity, regardless of whether the UE transmits on a multi-carrier CA or a non-CA single carrier. When the UE sends uplink data on each carrier (including the CC under CA and the non-CA carrier), it can use one HARQ process of the HARQ entity, or can use multiple HARQ processes of the HARQ entity.

Wherein, the uplink transmission indicates through the PDCCH on the base station side whether to enable MAC layer data packet multiplexing, and how to use the HARQ process, which specifically includes different CAs or the use of one or more HARQ processes on the same CC, or the use of one or more HARQ processes under non-CA. One or more HARQ processes are used on the carrier.

When the UE sends uplink data, the scheduler obtains from the unified HARQ the HARQ information used when sending data to the UE, including the Process ID. At this time, the HARQ entity can allocate the same HARQ process to the UE on each carrier according to the set decision method, and can also allocate different HARQ processes. When it is necessary to multiplex and transmit the MAC layer data packets of the UE, one HARQ process can be used to send data between CCs (multiple CCs) or within CCs, or different HARQ processes can be used to send data between CCs or within CCs send data. Of course, if it is a common data packet, it can also be sent between CCs or within a CC in one HARQ process, or different HARQ processes can be used to send data between CCs or within a CC.

Among them, for the inter-CC transmission of CA, only one HARQ process is used. If the data packets on different CCs are different, the receiving end (that is, the base station side, the receiving end in the uplink direction is the base station) sets the corresponding HARQ process on each CC. Receive buffer. If the data packets sent on different CCs are exactly the same, that is, the multiplexing of data packets, only one receive buffer is set at the receiving end, and the data packets received from each CC must be combined and decoded in this buffer. deal with.

Multiple HARQ processes are used. When the data packets on different CCs are different, the receiving end device sets a corresponding receive buffer on each CC, that is, sets a receive buffer for each HARQ process. If the data packets sent on different CCs are exactly the same, that is, the data packets are multiplexed, only one receive buffer is set at the receiving end, and the data packets received from each CC need to be code-combined in this buffer. deal with.

For the transmission in the CC of the CA, only one HARQ process is used. If the data packets on the CC are normal transmission, that is, there is no multiplexing (normal data packets), the receiving end sets the corresponding receiving buffer on the CC. . If the data packets sent on the CC are exactly the same, that is, the data packets are multiplexed, only one receive buffer is set at the receiving end, and the data packets received from the CC need to be code-combined in the buffer. .

Using multiple HARQ processes, when the data packets on the CC are normally sent, that is, there is no multiplexing (normal data packets), the receiving end sets the corresponding receiving buffer on the CC. When the data packets sent on the CC are exactly the same, that is, the data packets are multiplexed, only one receive buffer is set at the receiving end, and the data packets received from the CC need to be code combined in the buffer. .

For non-CA single-carrier transmission, only one HARQ process is used. If the TB on the CC is normal transmission, that is, there is no multiplexing (normal data packets), the receiving end sets the corresponding receiving buffer on the CC. . If the data packets sent on the CC are exactly the same, that is, the data packets are multiplexed, only one receive buffer is set at the receiving end, and the data packets received from the CC need to be code-combined in the buffer. .

Using multiple HARQ processes, if the data packets on the CC are normally sent, that is, there is no multiplexing (normal data packets), the receiving end sets the corresponding receiving buffer on the CC. If the data packets sent on the CC are exactly the same, that is, the data packets are multiplexed, only one receive buffer is set at the receiving end, and the data packets received from the CC need to be code-combined in the buffer. , that is, the combined decoding process is performed.

It can be seen from the above description that the solution of the embodiment of the present invention implements multiplexing and transmission of a data packet at the MAC layer through one or more processes of a HARQ entity. The PRB resources used by the HARQ entity for multiplexing and transmission may be on each CC of the CA, or may be within one CC.

The solution provided by the embodiment of the present invention supports the multiplexing of data packets within the band and between the bands. At the same time, the unified allocation of the HARQ process is realized.

In addition, the solutions of the embodiments of the present invention have good compatibility and can be compatible with 3G, 4G and 5G networks. Under 3G or 4G network, you can directly use one by one to send.

In order to implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a data transmission device, which is set on the sending end device. As shown in FIG. 10 , the device includes:

The sending unit 101 is configured to use one or more HARQ processes of one HARQ entity to copy and send the data packet at the MAC layer of the sending end device; wherein,

A data packet is sent in one or more HARQ processes; the data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet.

Wherein, in an embodiment, as shown in FIG. 10 , the device may further include:

The selecting unit 102 is configured to, after receiving the source data packet, select one or more HARQ processes for duplicating and sending the data packet.

In an embodiment, the sending unit 101 is specifically configured to:

Send packets on a carrier using one or more HARQ processes;

or,

Data packets are sent on multiple carriers using one or more HARQ processes.

In an embodiment, the sending unit 101 is specifically configured to:

use one or more HARQ processes to send packets on a CC under the CA;

or,

Send packets on multiple CCs under the CA using one or more HARQ processes.

In an embodiment, the sending end device is a network device, and the sending unit 101 is further configured to:

When multiple HARQ processes send data packets, the data transmission information of the data packets on the HARQ process TB is sent to the receiving end device; the data transmission information is used for the receiving end device to determine the receiving mode of the data packets on the HARQ process TB .

Wherein, in an embodiment, the sending unit 101 is specifically configured to:

Send the data sending information to the receiving end device through DCI;

Send the data sending information to the receiving end device through RRC signaling;

The data sending information is sent to the receiving end device through the MAC CE.

In an embodiment, the transmitting end device is a terminal, and the apparatus may further include: a receiving unit, configured to:

When multiple HARQ processes send data packets, receive data transmission information on the HARQ process TB of the data packets sent by the network device;

Using the data transmission information, the data transmission mode of the data packet on the HARQ process TB is determined.

Wherein, in an embodiment, the receiving unit is specifically used for:

Receive the data sending information sent by the network device through DCI;

Receive the data sending information sent by the network device through RRC signaling;

The data sending information sent by the network device is received through the MAC CE.

In practical application, the sending unit 101 and the receiving unit may be implemented by a communication interface in a data transmission device; the selection unit 102 may be implemented by a processor in the data transmission device.

In order to implement the method on the device side of the receiving end according to the embodiment of the present invention, the embodiment of the present invention further provides a data transmission device, which is set on the receiving end device. As shown in FIG. 11 , the device includes:

The receiving unit 111 is configured to use one or more HARQ processes of one HARQ entity to receive data packets at the MAC layer of the receiving end device; wherein,

The data packets received by the HARQ process are the source data packets, or are obtained by duplicating the source data packets.

Wherein, in an embodiment, the receiving unit 111 is specifically configured to:

receive data packets on a carrier using one or more HARQ processes;

or,

Data packets are received on multiple carriers using one or more HARQ processes.

In an embodiment, the receiving unit 111 is specifically configured to:

use one or more HARQ processes to send packets on a CC under the CA;

or,

Send packets on multiple CCs under the CA using one or more HARQ processes.

In one embodiment, the receiving end device is a terminal, and the receiving unit 111 is further configured to: receive data sending information on the HARQ process TB of the data packet sent by the network device;

Correspondingly, as shown in FIG. 11 , the apparatus may further include: a processing unit 112 for:

Determine the receiving mode of the data packet based on the data transmission related information, and store the data packet received through the multiple HARQ threads in the first buffer;

The data in the first cache is merged.

In an embodiment, the receiving unit 111 is specifically configured to:

Receive the data sending information sent by the network device through DCI;

Receive the data sending information sent by the network device through RRC signaling;

The data sending information sent by the network device is received through the MAC CE.

In practical application, the receiving unit 111 may be implemented by a communication interface in a data transmission device; the processing unit 112 may be implemented by a processor in the data transmission device.

It should be noted that: when the data transmission device provided in the above embodiment performs data transmission, only the division of the above program modules is used as an example for illustration. In practical applications, the above processing can be allocated to different program modules according to needs. 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 data transmission apparatus and the data transmission method embodiments provided by the above embodiments belong to the same concept, and the specific implementation process thereof is detailed in the method embodiments, 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 side of the transmitting end device in the embodiment of the present invention, the embodiment of the present invention further provides a transmitting end device. As shown in FIG. 11 , the transmitting end device 120 includes:

The first communication interface 121, capable of information interaction with the receiving end device;

The first processor 122 is connected to the first communication interface 121 to implement information exchange with the receiving end device, and is used to execute the methods provided by one or more technical solutions on the transmitting end device side when running the computer program. And the computer program is stored on the first memory 123 .

Specifically, the first communication interface 121 is configured to use one or more HARQ processes of a HARQ entity at the MAC layer of the transmitting end device to copy and send data packets; wherein,

A data packet is sent in one or more HARQ processes; the data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet.

Wherein, in an embodiment, the first processor 122 is configured to dynamically select one or more HARQ processes for data transmission after receiving the source data packet.

In an embodiment, the first communication interface 121 is specifically used for:

Send packets on a carrier using one or more HARQ processes;

or,

Data packets are sent on multiple carriers using one or more HARQ processes.

In an embodiment, the first communication interface 121 is specifically used for:

use one or more HARQ processes to send packets on a CC under the CA;

or,

Send packets on multiple CCs under the CA using one or more HARQ processes.

In an embodiment, the sending end device is a network device, and the first communication interface 121 is further used for:

When multiple HARQ processes send data packets, the data transmission information of the data packets on the HARQ process TB is sent to the receiving end device; the data transmission information is used for the receiving end device to determine the receiving mode of the data packets on the HARQ process TB .

Wherein, in an embodiment, the first communication interface 121 is specifically used for:

Send the data sending information to the receiving end device through DCI;

Send the data sending information to the receiving end device through RRC signaling;

The data sending information is sent to the receiving end device through the MAC CE.

In an embodiment, the sending end device is a terminal, and the first communication interface 121 is further used for:

When multiple HARQ processes send data packets, receive data transmission information on the HARQ process TB of the data packets sent by the network device;

Using the data transmission information, the data transmission mode of the data packet on the HARQ process TB is determined.

Wherein, in an embodiment, the first communication interface 121 is specifically used for:

Receive the data sending information sent by the network device through DCI;

Receive the data sending information sent by the network device through RRC signaling;

The data sending information sent by the network device is received through the MAC CE.

It should be noted that: the specific processing process of the first processor 122 and the first communication interface 121 can be understood with reference to the above method.

Of course, in practical application, various components in the sending end device 120 are coupled together through the bus system 124 . It will be appreciated that the bus system 124 is used to implement the connection communication between these components. In addition to the data bus, the bus system 124 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, the various buses are labeled as bus system 124 in FIG. 12 .

The first memory 123 in the embodiment of the present invention is used to store various types of data to support the operation of the sender device 120 . Examples of such data include: any computer program for operation on the sender device 120 .

The methods disclosed in the above embodiments of the present invention may be applied to the first processor 122 or implemented by the first processor 122 . The first processor 122 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the first processor 122 or an instruction in the form of software. The above-mentioned first processor 122 may be a general-purpose processor, a digital signal processor (DSP, Digital Signal Processor), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The first processor 122 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present invention can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the first memory 123, and the first processor 122 reads the information in the first memory 123 and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the transmitting end device 120 may be implemented by one or more Application Specific Integrated Circuits (ASIC, Application Specific Integrated Circuits), DSPs, Programmable Logic Devices (PLDs, Programmable Logic Devices), Complex Programmable Logic Devices (CPLDs) , Complex Programmable Logic Device), Field-Programmable Gate Array (FPGA, Field-Programmable Gate Array), general-purpose processor, controller, microcontroller (MCU, Micro Controller Unit), microprocessor (Microprocessor), or other electronic Element implementation for performing the aforementioned method.

Based on the hardware implementation of the above program modules, and in order to implement the method on the receiving end device side in the embodiment of the present invention, the embodiment of the present invention further provides a receiving end device. As shown in FIG. 13 , the receiving end device 130 includes:

The second communication interface 131 is capable of information interaction with the sending end device;

The second processor 132 is connected to the second communication interface 131 to realize information exchange with the sending end device, and is used to execute the methods provided by one or more technical solutions on the receiving end device side when running the computer program. And the computer program is stored on the second memory 133 .

Specifically, the second communication interface 131 is configured to use one or more HARQ processes of one HARQ entity to receive data packets at the MAC layer of the receiving end device; wherein,

The data packets received by the HARQ process are the source data packets, or are obtained by duplicating the source data packets.

Wherein, in an embodiment, the second communication interface 131 is specifically used for:

receive data packets on a carrier using one or more HARQ processes;

or,

Data packets are received on multiple carriers using one or more HARQ processes.

In an embodiment, the second communication interface 131 is specifically used for:

use one or more HARQ processes to send packets on a CC under the CA;

or,

Send packets on multiple CCs under the CA using one or more HARQ processes.

In one embodiment, the receiving end device is a terminal, and the second communication interface 131 is further configured to: receive data transmission information on the HARQ process TB of the data packet sent by the network device;

Correspondingly, the second processor 132 is used for:

Determine the receiving mode of the data packet based on the data transmission related information, and store the data packet received through the multiple HARQ threads in the first buffer;

The data in the first cache is merged.

In an embodiment, the second communication interface 131 is specifically used for:

Receive the data sending information sent by the network device through DCI;

Receive the data sending information sent by the network device through RRC signaling;

The data sending information sent by the network device is received through the MAC CE.

It should be noted that: the specific processing process of the second processor 132 and the second communication interface 131 can be understood by referring to the above method.

Of course, in practical application, various components in the receiving end device 130 are coupled together through the bus system 134 . It will be appreciated that the bus system 134 is used to implement the connection communication between these components. In addition to the data bus, the bus system 134 also includes a power bus, a control bus, and a status signal bus. However, for clarity of illustration, the various buses are labeled as bus system 134 in FIG. 13 .

The second memory 133 in the embodiment of the present invention is used to store various types of data to support the operation of the receiving end device 130 . Examples of such data include: any computer program for operation on recipient device 130 .

The methods disclosed in the above embodiments of the present invention may be applied to the second processor 132 or implemented by the second processor 132 . The second processor 132 may be an integrated circuit chip with signal processing capability. In the implementation process, each step of the above-mentioned method may be completed by an integrated logic circuit of hardware in the second processor 132 or an instruction in the form of software. The above-mentioned second processor 132 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. The second processor 132 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present invention. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the method disclosed in combination with the embodiments of the present invention can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software module may be located in a storage medium, and the storage medium is located in the second memory 133, and the second processor 132 reads the information in the second memory 133, and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the sink device 130 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, Microprocessors, or other electronic components for performing the aforementioned methods.

It can be understood that the memory (the first memory 123 and the second memory 133 ) in this embodiment of the present invention may be a volatile memory or a non-volatile memory, and may also include both volatile and non-volatile memory. Among them, the non-volatile memory may be a read-only memory (ROM, Read Only Memory), a programmable read-only memory (PROM, Programmable Read-Only Memory), an erasable programmable read-only memory (EPROM, Erasable Programmable Read-Only Memory) Memory), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Programmable Read-Only Memory), Magnetic Random Access Memory (FRAM, ferromagnetic randomaccess memory), Flash Memory, Magnetic Surface Memory, Optical Disc, Or compact disc read-only memory (CD-ROM, Compact Disc Read-Only Memory); magnetic surface memory can be magnetic disk memory or tape memory. The volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache memory. By way of example and 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, Dynamic Random Access Memory), Synchronous Dynamic Random Access Memory (SDRAM, Synchronous Dynamic Random Access Memory), Double Data Rate Synchronous Dynamic Random Access Memory (DDRSDRAM, Double Data Rate Synchronous Dynamic Random Access Memory), Enhanced Synchronous Dynamic Random Access Memory Random Access Memory (ESDRAM, Enhanced SynchronousDynamic Random Access Memory), Synchronous Link Dynamic Random Access Memory (SLDRAM, SyncLink Dynamic Random Access Memory), Direct Memory Bus Random Access Memory (DRRAM, Direct Rambus Random Access Memory). The memory described in the embodiments of the present invention is intended to include, but not be limited to, these and any other suitable types of memory.

To implement the method of the embodiment of the present invention, the embodiment of the present invention further provides a data transmission system, as shown in FIG. 14 , the system includes:

The sending end device 141 is configured to, at the MAC layer, use one or more HARQ processes of a HARQ entity to copy and send a data packet; a data packet is sent on one or more HARQ processes; the data packet sent by the HARQ process is the source data packets, or obtained by duplicating the source data packets;

The receiving end device 142 is configured to use one or more HARQ processes of a HARQ entity to receive data packets at the MAC layer; the data packets received by the HARQ process are source data packets or obtained by copying the source data packets.

It should be noted that the specific processing processes of the transmitting end device 141 and the receiving end device 142 have been described in detail above, and will not be repeated here.

In an exemplary embodiment, an embodiment of the present invention further provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, for example, including a first memory 123 that stores a computer program, and the above-mentioned computer program can be stored by the sending end device. The first processor 122 of 120 executes the steps described in the foregoing method on the device side of the transmitting end. Another example includes the second memory 133 storing a computer program, and the computer program can be executed by the second processor 132 of the receiving end device 130 to complete the steps of the aforementioned method on the receiving end device side. The computer-readable storage medium may be memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, 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 sequence or sequence.

In addition, the technical solutions described in the embodiments of the present invention may be combined arbitrarily if there is no conflict.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention.

Claims (16)

1. a data transmission method, is characterized in that, is applied to sending end equipment, comprises: At the media access control MAC layer of the transmitting end device, use one or more HARQ processes of a hybrid automatic repeat request HARQ entity to copy and send the data packet; wherein, The data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet; wherein, using one or more HARQ processes to send data packets on one carrier; or, using one or more HARQ processes to send data packets on multiple carriers; One or more HARQ processes of a HARQ entity correspond to a receive buffer; When using multiple HARQ processes to send data packets, the method further includes: When the sending end device is a network device, send the data sending information of the data packet on the HARQ process transport block TB to the receiving end device; the data sending information is used for the receiving end device to determine whether the data packet is in the HARQ process The receiving method on the process TB; or, When the sending end device is a terminal, receive the data sending information of the data packet on the HARQ process TB sent by the network device; use the data sending information to determine the data sending mode of the data packet on the HARQ process TB. 2. The method according to claim 1, wherein the method further comprises: After the source data packet is received, the one or more HARQ processes are selected for copying and sending of the data packet. 3. The method according to claim 1, wherein one or more HARQ processes are used to send data packets on one carrier component CC under carrier aggregation CA; or, Send packets on multiple CCs under the CA using one or more HARQ processes. 4. The method according to any one of claims 1 to 3, wherein the data transmission information is sent to the receiving end device in one of the following ways: Send the data sending information to the receiving end device through downlink control information DCI; Send the data sending information to the receiving end device through radio resource control RRC signaling; The data sending information is sent to the receiving end device through a medium access control control element MAC CE. 5. The method according to any one of claims 1 to 3, wherein the data transmission information sent by the network device is received in one of the following ways: Receive the data sending information sent by the network device through DCI; Receive the data sending information sent by the network device through RRC signaling; The data sending information sent by the network device is received through the MAC CE. 6. A data transmission method, characterized in that, applied to a receiving end device, comprising: At the MAC layer of the receiving end device, use one or more HARQ processes of a HARQ entity to receive data packets; wherein, The data packet received by the HARQ process is the source data packet, or is obtained by copying the source data packet; wherein, using one or more HARQ processes to receive data packets on one carrier; or, using one or more HARQ processes to receive data packets on multiple carriers; One or more HARQ processes of one HARQ entity correspond to one receive buffer; When using multiple HARQ processes to receive data packets, the method further includes: When the receiving end device is a terminal, receive the data sending information of the data packet on the HARQ process TB sent by the network device; determine the receiving mode of the data packet on the HARQ process TB based on the data sending information; or, When the receiving end device is a network device, send the data transmission information of the data packet in the HARQ process TB to the transmitting end device; the data transmission information is used for the transmitting end device to determine that the data packet is in the HARQ process TB data sending method. 7. The method according to claim 6, wherein one or more HARQ processes are used to send data packets on a CC under the CA; or, Send packets on multiple CCs under the CA using one or more HARQ processes. 8. The method according to claim 6 or 7, wherein the receiving end device is a terminal, and the method further comprises: storing data packets received through multiple HARQ threads in the first cache; The data in the first cache is merged. 9. The method according to claim 8, wherein the data transmission related information sent by the network device is received in one of the following ways: Receive the data sending information sent by the network device through DCI; Receive the data sending information sent by the network device through RRC signaling; The data sending information sent by the network device is received through the MAC CE. 10. A data transmission device, characterized in that, being arranged on a sending end device, comprising: A sending unit, configured to use one or more HARQ processes of one HARQ entity to copy and send the data packet at the MAC layer of the sending end device; wherein, The data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet; wherein, The sending unit is configured to use one or more HARQ processes to send data packets on one carrier; or, be configured to use one or more HARQ processes to send data packets on multiple carriers; One or more HARQ processes of a HARQ entity correspond to a receive buffer; When multiple HARQ processes are used to send data packets, and the sending end device is a network device, the sending unit is further configured to send data sending information of the data packets on the HARQ process TB to the receiving end device; the data The sending information is used for the receiving end device to determine the receiving mode of the data packet on the HARQ process TB; or, when multiple HARQ processes are used to send the data packet and the sending end device is a terminal, the apparatus further includes A receiving unit, the receiving unit is configured to receive the data sending information on the HARQ process TB of the data packet sent by the network device, and use the data sending information to determine the data sending mode of the data packet on the HARQ process TB. 11. A data transmission device, characterized in that, being arranged on a receiving end device, comprising: a receiving unit, configured to use one or more HARQ processes of one HARQ entity to receive data packets at the MAC layer of the receiving end device; wherein, The data packet received by the HARQ process is the source data packet, or is obtained by copying the source data packet; wherein, The receiving unit is used to receive data packets on one carrier using one or more HARQ processes; or, used to receive data packets on multiple carriers using one or more HARQ processes, and multiple carriers correspond to one receive buffer; One or more HARQ processes of a HARQ entity correspond to a receive buffer; When multiple HARQ processes are used to receive data packets, and the receiving end device is a terminal, the apparatus further includes a processing unit, and the receiving unit is further configured to receive the data packets sent by the network device on the HARQ process TB. data transmission information, the processing unit is configured to determine, based on the data transmission information, the receiving mode of the data packet on the HARQ process TB; or, when multiple HARQ processes are used to receive the data packet, the receiving end device is a network device Under the circumstance, the receiving unit is also used to send the data sending information of the data packet on the HARQ process TB to the sending end device; the data sending information is used for the sending end device to determine that the data packet is on the HARQ process TB. data transmission method. 12. A sending end device, comprising: a first processor and a first communication interface; wherein, The first communication interface is configured to use one or more HARQ processes of one HARQ entity to copy and send data packets at the MAC layer of the transmitting end device; wherein, The data packet sent by the HARQ process is the source data packet, or is obtained by copying the source data packet; wherein, The first communication interface is used to send data packets on one carrier using one or more HARQ processes; or, used to send data packets on multiple carriers using one or more HARQ processes; One or more HARQ processes of a HARQ entity correspond to a receive buffer; When multiple HARQ processes are used to send data packets, and the sending end device is a network device, the first communication interface is also used to send data sending information of the data packets on the HARQ process TB to the receiving end device; The data sending information is used for the receiving end device to determine the receiving mode of the data packet on the HARQ process TB; or, when multiple HARQ processes are used to send the data packet and the sending end device is a terminal, the first A communication interface is further configured to receive data transmission information on the HARQ process TB of the data packet sent by the network device, and use the data transmission information to determine the data transmission mode of the data packet on the HARQ process TB. 13. A receiving end device, comprising: a second processor and a second communication interface; wherein, The second communication interface is used to receive data packets using one or more HARQ processes of one HARQ entity at the MAC layer of the receiving end device; wherein, The data packet received by the HARQ process is the source data packet, or is obtained by copying the source data packet; wherein, The second communication interface is used to receive data packets on one carrier using one or more HARQ processes; or, used to receive data packets on multiple carriers using one or more HARQ processes, and multiple carriers correspond to one receive buffer ; One or more HARQ processes of a HARQ entity correspond to a receive buffer; When multiple HARQ processes are used to receive data packets, and the receiving end device is a terminal, the second communication interface is further configured to receive data transmission information on the HARQ process TB of the data packets sent by the network device, the The second processor is configured to determine, based on the data transmission information, the receiving mode of the data packet on the HARQ process TB; or, when multiple HARQ processes are used to receive the data packet and the receiving end device is a network device, The second communication interface is also used to send the data sending information of the data packet on the HARQ process TB to the sending end device; the data sending information is used for the sending end device to determine the data of the data packet on the HARQ process TB. send. 14. A sending end device, comprising: a first processor and a first memory for storing a computer program that can be run on the processor, Wherein, when the first processor is configured to execute the computer program, the steps of the method of any one of claims 1 to 5 are executed. 15. A receiver device, comprising: a second processor and a second memory for storing a computer program that can run on the processor, Wherein, the second processor is configured to execute the steps of the method of any one of claims 6 to 9 when running the computer program. 16. A storage medium on which a computer program is stored, characterized in that, when the computer program is executed by a processor, the steps of the method of any one of claims 1 to 5 are implemented, or any one of claims 6 to 9 is implemented. A step of the method.

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