WO2021023008A1 - Data transmission method and apparatus, related device, and storage medium - Google Patents

Abstract

Disclosed in the present application are a data transmission method and apparatus, a network device, a terminal, and a storage medium. The method is applied to the network device, and comprises: configuring a transport block (TB) to be retransmitted to the terminal on at least two timeslots, a hybrid automatic repeat request (HARQ) function of the terminal is disabled.

Description

Data transmission method, device, related equipment and storage medium

Cross references to related applications

This application is filed based on the Chinese patent application with the application number 201910731078.3 and the application date on August 8, 2019, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated into this application by reference.

Technical field

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

Background technique

In communication systems, information may be lost during channel transmission. Therefore, in order to maintain the integrity of the information, it is necessary to retransmit the information until all the information is received correctly. There are two retransmission mechanisms in the communication system, namely the Hybrid Automatic Repeat reQuest (HARQ) mechanism at the Media Access Control (MAC) layer, and the Automatic Repeat ReQuest (RLC) layer at the Radio Link Control (RLC) layer. Retransmission request (ARQ, Automatic Repeat reQuest) mechanism.

In the HARQ mechanism, when one HARQ process is waiting for confirmation information, another HARQ process can be used to continue sending data. In this case, when HARQ is used for retransmission, some data packets will experience additional two-way transmission delay. Therefore, how to improve the reliability of data transmission is a problem to be solved urgently.

Summary of the invention

To solve related technical problems, embodiments of the present application provide a data transmission method, device, related equipment, and storage medium.

The technical solutions of the embodiments of the present application are implemented as follows:

The embodiment of the present application provides a data transmission method, which is applied to a network device, and includes:

Configure the transmission block (TB) to be retransmitted to the terminal on at least two time slots; among them,

The HARQ function of the terminal is turned off.

In the above solution, the method further includes:

Retransmit the TB to the terminal in at least two time slots.

In the above solution, the at least two time slots are configured with time slot intervals.

In the above solution, the positions of symbols configured to transmit the TB in each of the at least two time slots are the same.

In the above solution, the relevant configuration information for retransmission includes at least:

Retransmission times;

Retransmit the slot interval of the TB.

In the above solution, the retransmission of the configuration TB to the terminal in at least two time slots includes:

Configure the TB to be retransmitted to the terminal in at least two time slots in a semi-static manner;

or,

Configure the TB to retransmit to the terminal in at least two time slots in a dynamic manner.

In the above solution, the semi-static configuration of the TB to be retransmitted to the terminal in at least two time slots includes:

Indicate the retransmission related configuration information to the terminal through radio resource control (RRC) signaling.

In the above solution, the dynamic configuration of the TB to be retransmitted to the terminal in at least two time slots includes:

Indicate the retransmission related configuration information to the terminal through downlink control information (DCI).

In the above solution, when the relevant configuration information of retransmission is indicated to the terminal through the DCI, the relevant configuration information of retransmission is indicated by multiplexing at least part of all the HARQ-related fields in the DCI.

In the above solution, the method further includes:

Redefining the at least part of the domain through RRC signaling.

In the above solution, when the retransmission related configuration information is indicated to the terminal through the DCI, the retransmission related configuration information is indicated through the newly added field in the DCI.

The embodiment of the present application also provides a data transmission method applied to a terminal, including:

Receiving retransmission related configuration information sent by the network side; the retransmission related configuration information instructing the terminal TB to retransmit to the terminal in at least two time slots; wherein,

The HARQ function of the terminal is turned off.

In the above solution, the method further includes:

Using the relevant configuration information of the retransmission, the TB retransmitted by the network side is received in at least two time slots.

In the above solution, the at least two time slots are configured with time slot intervals.

In the above solution, the retransmitted TB is received at the same symbol position in each of the at least two time slots.

In the above solution, the receiving retransmission related configuration information sent by the network side includes:

Receiving retransmission related configuration information indicated by the network side through RRC signaling;

or,

The retransmission related configuration information indicated by the network side through the DCI is received.

In the above solution, the retransmission related configuration information indicated by the receiving network side through DCI includes:

The receiving network side multiplexes the retransmission related configuration information indicated by at least part of all HARQ-related domains in the DCI.

In the above solution, the method further includes:

Receiving the at least part of the domain redefined by the network side through RRC signaling.

In the above solution, the retransmission related configuration information indicated by the receiving network side through DCI includes:

Receiving the retransmission related configuration information indicated by the network side through the newly added domain of the DCI.

An embodiment of the present application also provides a data transmission device, including:

The configuration unit is configured to configure the TB to be retransmitted to the terminal in at least two time slots; wherein,

The HARQ function of the terminal is turned off.

An embodiment of the present application also provides a data transmission device, including:

Receiving retransmission related configuration information sent by the network side; the retransmission related configuration information instructing the terminal TB to retransmit to the terminal in at least two time slots; wherein,

The HARQ function of the terminal is turned off.

The embodiment of the present application also provides a network device, including: a first processor and a first communication interface; wherein,

The first processor is configured to configure the TB to retransmit to the terminal in at least two time slots through the first communication interface; wherein,

The HARQ function of the terminal is turned off.

The embodiment of the present application also provides a terminal, including: a second processor and a second communication interface; wherein,

The second processor is configured to receive retransmission related configuration information sent by the network side through the second communication interface; the retransmission related configuration information instructs the terminal TB to retransmit on at least two time slots To the terminal; where,

The HARQ function of the terminal is turned off.

An embodiment of the present application also provides a network device, including: a first processor and a first memory configured to store a computer program that can run on the processor,

Wherein, the first processor is configured to execute the steps of any method on the network device side when running the computer program.

An embodiment of the present application also provides a terminal, including: a second processor and a second memory configured to store a computer program that can run on the processor,

Wherein, the second processor is configured to execute the steps of any method on the terminal side when running the computer program.

The embodiment of the present application 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 network device side or the steps of any method on the terminal side are implemented.

In the data transmission method, device, related equipment, and storage medium provided by the embodiments of the present application, when the HARQ function of the terminal is turned off, the network equipment configures the TB to be retransmitted to the terminal on at least two slots, and the TB is retransmitted through multiple slots. In this way, when the HARQ function of the terminal is turned off, the reliability of data transmission can be guaranteed.

Description of the drawings

Figure 1 is a schematic diagram of the HARQ process duration in a bent pipe transmission scenario in a non-terrestrial network (NTN);

FIG. 2 is a schematic flowchart of a data transmission method according to an embodiment of the application;

FIG. 3 is a schematic diagram of a transmission sequence when the relevant field of multiplexing DCI format 1-0 indicates that the interval between retransmission slots is 4 slots according to an embodiment of the application;

4 is a schematic structural diagram of a data transmission device according to an embodiment of the application;

5 is a schematic structural diagram of another data transmission device according to an embodiment of the application;

6 is a schematic diagram of the structure of a network device according to an embodiment of the application;

FIG. 7 is a schematic diagram of a terminal structure according to an embodiment of the application;

FIG. 8 is a schematic structural diagram of a data transmission system according to an embodiment of the application.

detailed description

The application will be further described in detail below with reference to the drawings and embodiments.

In the HARQ mechanism, the stop-and-wait process is used to send data, that is, after the sender sends a TB, it stops and waits for the confirmation message, and the receiver uses 1-bit information to confirm the TB (ACK) Or negative (NACK) feedback. However, after each transmission, the sender stops and waits for confirmation, which will reduce the system throughput. Based on this, multiple parallel stop-and-wait processes are proposed, that is, when one HARQ process is waiting for confirmation information, the sender can use another HARQ process to continue sending data.

The minimum HARQ process number required in the communication system can be calculated according to the following formula:

Among them, T _sf represents the subframe size, T _ue represents the processing duration of the user equipment (UE), T _ack represents the ACK/NACK transmission duration, T _nb represents the base station processing duration, and RTT represents the round trip delay (RTT, Round Trip Delay).

It can be collectively referred to as HARQ process duration T _HARQ .

Figure 1 shows a T _HARQ in the NTN Bent-Pipe transmission scene. Among them, in Figure 1, Tp represents the transmission delay, RTT = 2Tp; T _slot represents the length of a time slot in the case of 15kHz subcarrier spacing, that is, T _sf ; T _proc1 represents HARQ process processing delay 1; T _proc2 represents HARQ Process processing time delay 2.

In NTN, the number of HARQ processes is mainly affected by RTT. This is due to the difference in satellite height and bending pipe transmission or on-board transmission. In different scenarios, the RTT size is different, so the minimum HARQ process number required is also different. For example, when the subcarrier spacing is 15kHz, it can be estimated that the terrestrial network (Terrestrial), the low earth orbit satellite system (LEO, the satellite height is 1500km), the medium earth orbit satellite system (MEO, the satellite height is 10000km), the earth The minimum number of HARQ processes required in the scenario of an orbiting satellite system (GEO, satellite height of 35786km)/high-altitude orbiting satellite system (HEO, satellite height of 400～50,000km) is shown in Table 1 below.

Table 1

It can be seen from Table 1 that in the fifth-generation mobile communication technology (5G) new air interface (NR) system, the maximum number of HARQ processes that a UE can support is 16, while the demand for the number of HARQ processes in the NTN system is far more than 16 pieces. However, too many HARQ processes require large storage space at the receiving end, and frequent use of HARQ will also cause data link jitter. In this case, some data packets will experience additional two-way transmission delay when using HARQ retransmission.

Based on this, the HARQ disabling mechanism is defined, that is, the network side can configure the on-off state of HARQ, which can be implemented in two ways: semi-static HARQ disabling and dynamic HARQ disabling.

However, when HARQ disabling is configured, the HARQ function of the terminal is turned off. At this time, the downlink data transmission will no longer have uplink feedback. In this case, the reliability of data transmission will be reduced.

Based on this, in order to improve the reliability of data transmission, in various embodiments of the present application, the HARQ function of the terminal configured on the network side is turned off. At this time, there is no uplink (UL) ACK/NACK feedback for downlink data transmission to ensure the reliability of data transmission. , The network side configures TB to retransmit on multiple slots (repetitive transmission, English can be expressed as repetition or retransmission).

The embodiment of the application provides a data transmission method, which is applied to a network device, specifically a base station (such as a next-generation node B (gNB), etc.). The method includes: configuring a TB to retransmit to a terminal in at least two time slots; among them,

The HARQ function of the terminal is turned off.

That is, for a TB, configure the TB to retransmit to the terminal in at least two time slots.

Here, after the HARQ function of the terminal is turned off, there is no uplink ACK/NACK feedback for downlink data transmission.

Wherein, at least two time slots are configured with a time slot interval, that is, in at least two time slots for transmitting the TB, a time slot interval is set between two adjacent time slots.

Here, in actual application, the set time slot interval size is related to the system parameters (mainly the subcarrier interval), that is, when the system parameter value is 15kHz, the time slot interval of at least two time slots used to retransmit TB is equal to The time slot interval value configured on the network side (that is, the length of a slot configured on the network side when the subcarrier interval is 15kHz, that is, 1ms); when the system parameter value is 30kHz, the time when at least two time slots of the TB are retransmitted The slot interval is equal to the time slot interval value configured on the network side and the scale factor (scale) calculation result, for example, Slot interval=interval*2^u*scale. Wherein, Slot interval represents the time slot interval of at least two time slots of the retransmission TB, and interval represents the time slot interval value configured on the network side. Among them, u represents the index value when configuring the system parameters; specifically, when u is 0, the system parameter is 15kHz subcarrier spacing; when u is 1, the system parameter is 30kHz subcarrier spacing; u is At 2, the system parameter is 60kHz subcarrier spacing; when u is 3, the system parameter is 120kHz subcarrier spacing; when u is 4, the system parameter is 240kHz subcarrier spacing.

In practical applications, in order to reduce the processing complexity of the receiving end, the network device may also be configured to have the same symbol positions for transmitting the TB in each of the at least two time slots.

When the TB is configured to be retransmitted to the terminal in at least two time slots, the relevant configuration information of the retransmission needs to be sent to the terminal.

In an embodiment, the retransmission related configuration information may at least include:

Retransmission times;

Retransmit the slot interval of the TB.

Wherein, if the number of retransmissions is set to N, the TB will be retransmitted in N time slots, where N is a natural number greater than or equal to 2, and it can also be understood that N is an integer greater than or equal to 2.

Here, the number of retransmissions can be understood as the number of repeated transmissions. For example, if the number of repetitions is 2, then a TB is transmitted twice; if the number of repetitions is 3, then a TB is transmitted 3 times, and so on.

The slot interval may also be understood as an offset of the slot used to retransmit the TB.

In practical applications, the network device may use a dynamic configuration method to configure the TB to be retransmitted to the terminal in at least two time slots, or use a semi-static configuration method to configure the TB to retransmit to the terminal in at least two time slots.

Wherein, in an embodiment, the dynamically configuring the TB to retransmit to the terminal in at least two time slots includes:

The relevant configuration information of the retransmission is indicated to the terminal through the DCI.

Here, in actual application, the DCI is carried through the physical downlink control channel (PDCCH).

When indicating the retransmission related configuration information to the terminal through the DCI, the format of the existing DCI format (format) may not be changed. In this case, the HARQ-related fields in the DCI format can be multiplexed (may be all HARQ-related fields). , It may also be part of the fields related to HARQ), by redefining the meaning of these fields to realize the indication of the relevant configuration information of the retransmission. This method does not change the format of the existing DCI format, so it is highly flexible when used.

Based on this, in an embodiment, when the DCI is used to indicate the retransmission related configuration information to the terminal, the retransmission related configuration information is indicated by multiplexing at least some of all HARQ-related fields in the DCI.

Wherein, in actual application, since the meaning of these fields is redefined, the terminal needs to be notified of the definition of these fields so that the terminal can accurately learn the relevant configuration information of the retransmission.

Based on this, in an embodiment, the method may further include:

Redefining the at least part of the domain through RRC signaling.

That is to say, the terminal is notified of the at least part of the redefined domain through RRC signaling.

In actual application, the HARQ-related fields in the DCI format may be partially reserved, for example, at least part of the fields may be reserved.

Of course, when indicating the retransmission related configuration information to the terminal through the DCI, a new field can also be added to the DCI format to indicate the retransmission related configuration information. In this case, the HARQ related fields in the DCI format need to be removed.

Based on this, in an embodiment, when indicating the retransmission related configuration information to the terminal through the DCI, the retransmission related configuration information is indicated through the newly added field in the DCI.

In an embodiment, the semi-static configuration of the TB to be retransmitted to the terminal in at least two time slots includes:

Indicate the relevant configuration information of the retransmission to the terminal through RRC signaling.

In practical applications, the RRC signaling may specifically be an RRC reconfiguration message, etc.

Compared with the manner of indicating the retransmitted related configuration information to the terminal through DCI, the manner of indicating the retransmitted related configuration information to the terminal through RRC signaling can use less overhead.

After the configuration is completed, the network device retransmits the TB to the terminal on at least two configured slots.

Correspondingly, an embodiment of the present application also provides a data transmission method applied to a terminal, including:

Receiving retransmission related configuration information sent by the network side; the retransmission related configuration information instructing the terminal TB to retransmit to the terminal in at least two time slots; wherein,

The HARQ function of the terminal is turned off.

In an embodiment, the method may further include:

The TB retransmitted by the network side is received on at least two slots by using the relevant configuration information of the retransmission.

In an embodiment, the terminal receives the retransmitted TB at the same symbol position in each of the at least two time slots.

In an embodiment, the receiving configuration information related to the retransmission sent by the network side includes:

Receiving retransmission related configuration information indicated by the network side through RRC signaling;

or,

The retransmission related configuration information indicated by the network side through the DCI is received.

Wherein, in an embodiment, the retransmission related configuration information indicated by the receiving network side through DCI includes:

The receiving network side multiplexes the retransmission related configuration information indicated by at least part of all HARQ-related domains in the DCI.

In an embodiment, the method may further include:

Receiving the at least part of the domain redefined by the network side through RRC signaling.

In an embodiment, the receiving network-side related configuration information for retransmission indicated by DCI includes:

The retransmission related configuration information indicated by the network side through the newly added domain of the DCI is received.

The embodiment of the present application provides a data transmission method. As shown in FIG. 2, the method includes:

Step 201: The network device configures the TB to retransmit to the terminal in at least two time slots;

Wherein, the HARQ function of the terminal is turned off.

Step 202: The terminal receives the retransmission related configuration information sent by the network device.

Here, the related configuration information of the retransmission indicates that the terminal TB retransmits to the terminal in at least two time slots.

It should be noted that the specific processing procedures of the network equipment and the terminal have been described in detail above, and will not be repeated here.

The data transmission method provided in the embodiments of this application can be understood as a signal transmission enhancement solution in the case of HARQ disable. When the HARQ function of the terminal is turned off, the network device configures the TB to retransmit to the terminal on at least two slots, through Multiple slots retransmit the TB, so that the reliability of data transmission can be guaranteed when the HARQ function of the terminal is turned off.

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

In the application embodiment, how to indicate the relevant configuration information of retransmission to the terminal through DCI is described.

In the NR system, the DCI format related to the scheduling of the physical downlink shared channel (PDSCH) is DCI format 1-0 and DCI format 1-1, among which the fields related to HARQ are shown in Table 2. Table 2 shows the HARQ-related fields and the number of bits in DCI format 1-0 and DCI format 1-1.

Table 2

When the HARQ-related fields in the DCI format are multiplexed to achieve the retransmission related configuration information indication, the retransmission related configuration information can be completed by redefining a single field in the DCI format to complete the indication of a single item of information in the retransmission related configuration information, such as retransmission. Define the RV field to indicate the number of retransmissions, and redefine the PDSCH-to-HARQ feedback timing indicator field to indicate the interval between multiple slots.

For example, in DCI format 1-0, when the value of the RV field is 11, it means that the number of retransmissions is 4 (when the value is all 0, it means 1 transmission), PDSCH-to-HARQ feedback timing indicator When the value is 100, the interval between multiple slots is 4, as shown in Figure 3.

For another example, redefine the HARQ process number field to indicate the number of retransmissions, and redefine the RV field to indicate the interval between multiple slots.

When the HARQ-related fields in the DCI format are multiplexed to achieve the retransmission related configuration information indication, the retransmission related configuration information can also be completed by redefining multiple fields in the DCI format to complete the indication of a single item of information in the retransmission related configuration information, such as Compared with the terrestrial network system, there are more retransmissions in the NTN system, and the number of bits in a single domain indication in the DCI may not be enough, so multiple domain joint indications can be used. For example, redefine the RV field and the DAI field to jointly indicate the number of retransmissions, and redefine the PUCCH resource indicator field and the PDSCH-to-HARQ feedback timing indicator field to indicate the interval between multiple slots.

For example, when the value in DCI format 1-0 is shown in Table 3, it means that the number of retransmissions is 1 and the interval between multiple slots is 12 slots.

RV	01
DAI	11
PUCCH resource indicator	001
PDSCH-to-HARQ feedback timing indicator	100

table 3

When the HARQ-related fields in the DCI format are multiplexed to achieve retransmission related configuration information indication, after the HARQ function of the terminal is turned off through RRC signaling, the HARQ-related fields in the DCI format can be partially reserved, that is, the multiplexed The HARQ-related fields are reserved. At this time, the reserved fields can be redefined through RRC signaling to instruct the TB to retransmit on multiple slots. For example, in the case of HARQ disabled, in order to align DCI format 1-0 and DCI format 1-1, the DAI field and PDSCH-to-HARQ feedback timing indicator field can be removed, because in DCI format 1-1 these two fields can be It is indicated as 0bit through RRC signaling. At this time, the remaining HARQ-related fields in the DCI format can be configured through RRC signaling to instruct the TB to retransmit on multiple slots, that is, to redefine the remaining AND fields in the DCI format through RRC signaling. HARQ-related fields to indicate retransmission related configuration information through these fields.

When a new field is added to the DCI format to indicate the relevant configuration information for retransmission, after the HARQ function of the terminal is turned off through RRC signaling, it is necessary to remove the HARQ-related fields in the DCI format and add a new field for dynamic Indicates the number of retransmissions and the interval between multiple slots. For example, the repetition number field is added to indicate the number of TB retransmissions, and the repetition slot interval field is added to indicate the interval between TB retransmissions of multiple slots.

In the NTN system, the transmission delay is relatively large, and too many HARQ processes require large storage space at the receiving end. Frequent use of HARQ will also lead to increased data link jitter. Therefore, it is necessary to consider the HARQ disable mechanism in NTN. When the network side configures the UE HARQ off, there is no UL ACK/NACK feedback for downlink data transmission. In order to ensure the reliability of data transmission, a network side can be configured with multiple TBs. The HARQ enhancement scheme of retransmission on interval slots can obtain time diversity gain compared with retransmission on continuous slots, and can also reduce the power consumption of the transceiver under the premise of ensuring the reliability of data transmission.

In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides a data transmission device, which is set on a network device. As shown in FIG. 4, the device includes:

The configuration unit 41 is configured to configure the TB to be retransmitted to the terminal on at least two slots; wherein,

The HARQ function of the terminal is turned off.

In an embodiment, as shown in FIG. 4, the device may further include:

The retransmission unit 42 is configured to retransmit the TB to the terminal in at least two time slots.

In an embodiment, the configuration unit 41 is configured to configure the same symbol positions for transmitting the TB in each of the at least two time slots.

In an embodiment, the configuration unit 41 is configured to:

Configure the TB to be retransmitted to the terminal in at least two time slots in a semi-static manner;

or,

Configure the TB to retransmit to the terminal in at least two time slots in a dynamic manner.

Wherein, in an embodiment, the configuration unit 41 indicates the retransmission related configuration information to the terminal through RRC signaling.

In an embodiment, the configuration unit 41 indicates the retransmission related configuration information to the terminal through DCI.

Here, in an embodiment, when the configuration information related to retransmission is indicated to the terminal through DCI, the configuration unit 41 indicates the retransmission by multiplexing at least part of all HARQ-related fields in the DCI. Related configuration information.

Wherein, in an embodiment, the configuration unit 41 is further configured to redefine the at least part of the domain through RRC signaling.

In an embodiment, when the retransmission related configuration information is indicated to the terminal through the DCI, the configuration unit 41 indicates the retransmission related configuration information through a newly added field in the DCI.

In practical applications, the configuration unit 41 and the retransmission unit 42 can be implemented by a processor in a data transmission device in combination with a communication interface.

In order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a data transmission device, which is set on the terminal. As shown in FIG. 5, the device includes:

The first receiving unit 51 is configured to receive retransmission related configuration information sent by the network side; the retransmission related configuration information instructs the terminal TB to retransmit to the terminal in at least two time slots; wherein,

The HARQ function of the terminal is turned off.

In an embodiment, as shown in FIG. 5, the apparatus may further include: a second receiving unit 52 configured to receive the TB retransmitted by the network side in at least two time slots by using the configuration information related to the retransmission.

Wherein, in an embodiment, the second receiving unit 52 is configured to receive the retransmitted TB at the same symbol position in each of the at least two time slots.

In an embodiment, the first receiving unit 51 is configured to:

Receiving retransmission related configuration information indicated by the network side through RRC signaling;

or,

The retransmission related configuration information indicated by the network side through the DCI is received.

Here, in an embodiment, the first receiving unit 51 receives the retransmission related configuration information indicated by the network side by multiplexing at least some of all HARQ-related domains in the DCI.

Wherein, in an embodiment, the first receiving unit 51 is further configured to receive the at least part of the domain redefined by the network side through RRC signaling.

In an embodiment, the first receiving unit 51 receives the retransmission related configuration information indicated by the network side through the newly added domain of the DCI.

In practical applications, the first receiving unit 51 and the second receiving unit 52 can be implemented by a processor in a data transmission device in combination with a communication interface.

It should be noted that when the data transmission device provided in the above embodiment performs data transmission, only the division of the above-mentioned program modules is used as an example. In actual applications, the above-mentioned processing can be allocated by 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 data transmission device provided in the foregoing embodiment and the data transmission method embodiment belong to the same concept, and the specific implementation process is detailed in the method embodiment, and will not be repeated here.

Based on the hardware implementation of the above program modules, and in order to implement the method on the network device side of the embodiment of the present application, the embodiment of the present application also provides a network device. As shown in FIG. 6, the network device 60 includes:

The first communication interface 61 can exchange information with the terminal;

The first processor 62 is connected to the first communication interface 61 to implement information interaction with the terminal, and is configured to execute the method provided by one or more technical solutions on the network device side when it is configured to run a computer program. The computer program is stored in the first memory 63.

Specifically, the first processor 62 is configured to configure the TB to retransmit to the terminal in at least two time slots through the first communication interface 61; wherein,

The HARQ function of the terminal is turned off.

Wherein, in an embodiment, the first processor 62 is further configured to retransmit the TB to the terminal in at least two time slots through the first communication interface 61.

In an embodiment, the first processor 62 is configured to:

Configure the TB to be retransmitted to the terminal in at least two time slots in a semi-static manner;

or,

Configure the TB to retransmit to the terminal in at least two time slots in a dynamic manner.

In an embodiment, the first processor 62 indicates the retransmission related configuration information to the terminal through DCI.

Here, in an embodiment, when the relevant configuration information for retransmission is indicated to the terminal through DCI, the first processor 62 indicates retransmission by multiplexing at least part of all HARQ-related domains in the DCI. Related configuration information.

Wherein, in an embodiment, the first processor 62 is further configured to use the first communication interface 61 to redefine the at least part of the domain through RRC signaling.

In an embodiment, when the retransmission related configuration information is indicated to the terminal through the DCI, the first processor 62 indicates the retransmission related configuration information through the newly added field in the DCI.

It should be noted that the specific processing procedures of the first processor 62 and the first communication interface 61 can be understood with reference to the foregoing method.

Of course, in actual applications, the various components in the network device 60 are coupled together through the bus system 64. It can be understood that the bus system 64 is configured to implement connection and communication between these components. In addition to the data bus, the bus system 64 also includes a power bus, a control bus, and a status signal bus. However, for the sake of clarity, various buses are marked as the bus system 64 in FIG. 6.

The first memory 63 in the embodiment of the present application is configured to store various types of data to support the operation of the network device 60. Examples of such data include: any computer program used to operate on the network device 60.

The method disclosed in the foregoing embodiment of the present application may be applied to the first processor 62 or implemented by the first processor 62. The first processor 62 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the first processor 62 or instructions in the form of software. The aforementioned first processor 62 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, and the like. The first processor 62 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed 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 63. The first processor 62 reads the information in the first memory 63 and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the network device 60 may be configured by one or more application specific integrated circuits (ASIC, Application Specific Integrated Circuit), DSP, programmable logic device (PLD, Programmable Logic Device), and complex programmable logic device (CPLD). , 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 electronics The component is implemented and configured to perform the aforementioned method.

Based on the hardware implementation of the above program modules, and in order to implement the method on the terminal side of the embodiment of the present application, the embodiment of the present application also provides a terminal. As shown in FIG. 7, the terminal 70 includes:

The second communication interface 71 is capable of information interaction with network equipment;

The second processor 72 is connected to the second communication interface 71 to implement information interaction with network devices, and when configured to run a computer program, it executes the method provided by one or more technical solutions on the terminal side. The computer program is stored in the second memory 73.

Specifically, the second processor 72 is configured to receive, through the second communication interface 71, retransmission related configuration information sent by the network side; the retransmission related configuration information indicates that the terminal TB is in at least two Retransmitted to the terminal on the time slot; wherein,

The HARQ function of the terminal is turned off.

Wherein, in one embodiment, the second processor 72 is configured to use the relevant configuration information of the retransmission to receive the network-side retransmitted TB through the second communication interface 71 in at least two time slots.

Wherein, in an embodiment, the second receiving unit 52 is configured to receive the retransmitted TB at the same symbol position in each of the at least two time slots.

In an embodiment, the second processor 72 is configured to:

Receiving retransmission related configuration information indicated by the network side through RRC signaling;

or,

The retransmission related configuration information indicated by the network side through the DCI is received.

Here, in an embodiment, the second processor 72 receives retransmission related configuration information indicated by the network side by multiplexing at least part of all HARQ-related domains in the DCI.

Wherein, in an embodiment, the second processor 72 is further configured to receive, through the second communication interface 71, the at least part of the domain redefined by the network side through RRC signaling.

In an embodiment, the second processor 72 receives the retransmission related configuration information indicated by the network side through the newly added domain of the DCI.

It should be noted that the specific processing procedures of the second processor 72 and the second communication interface 71 can be understood with reference to the foregoing method.

Of course, in actual application, the various components in the terminal 70 are coupled together through the bus system 74. It can be understood that the bus system 74 is configured to implement connection and communication between these components. In addition to the data bus, the bus system 74 also includes a power bus, a control bus, and a status signal bus. However, for clarity of description, various buses are marked as the bus system 74 in FIG. 7.

The second memory 73 in the embodiment of the present application is configured to store various types of data to support the operation of the terminal 70. Examples of these data include: any computer program used to operate on the terminal 70.

The method disclosed in the foregoing embodiment of the present application may be applied to the second processor 72 or implemented by the second processor 72. The second processor 72 may be an integrated circuit chip with signal processing capability. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the second processor 72 or instructions in the form of software. The aforementioned second processor 72 may be a general-purpose processor, a DSP, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. The second processor 72 may implement or execute the methods, steps, and logical block diagrams disclosed in the embodiments of the present application. The general-purpose processor may be a microprocessor or any conventional processor. The steps of the method disclosed in the embodiments of the present application can be directly embodied as being executed and completed 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 73. The second processor 72 reads the information in the second memory 73 and completes the steps of the foregoing method in combination with its hardware.

In an exemplary embodiment, the terminal 70 may be implemented by one or more ASICs, DSPs, PLDs, CPLDs, FPGAs, general-purpose processors, controllers, MCUs, Microprocessors, or other electronic components, and is configured to perform the foregoing methods.

It can be understood that the memory (the first memory 63 and the second memory 73) of the embodiment of the present application 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 can 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), Electrically Erasable Programmable Read-Only Memory (EEPROM, Electrically Erasable Read-Only Memory), magnetic random access memory (FRAM, ferromagnetic random access memory), flash memory (Flash Memory), magnetic surface memory , CD-ROM, or CD-ROM (Compact Disc Read-Only Memory); magnetic surface memory can be magnetic disk storage or tape storage. The volatile memory may be random access memory (RAM, Random Access Memory), which is used as an external cache. By way of exemplary but not restrictive description, many forms of RAM are available, such as static random access memory (SRAM, Static Random Access Memory), synchronous static random access memory (SSRAM, Synchronous Static Random Access Memory), and 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 -Type synchronous dynamic random access memory (ESDRAM, Enhanced Synchronous Dynamic Random Access Memory), synchronous connection dynamic random access memory (SLDRAM, SyncLink Dynamic Random Access Memory), direct memory bus random access memory (DRRAM, Direct Rambus Random Access Memory) ). The memories described in the embodiments of the present application are intended to include, but are not limited to, these and any other suitable types of memories.

In order to implement the method of the embodiment of the present application, the embodiment of the present application also provides a data transmission system. As shown in FIG. 8, the system includes: a network device 81 and a terminal 82; wherein,

The network device 81 is configured to configure the TB to retransmit to the terminal 82 in at least two time slots;

The terminal 82 is configured to receive retransmission related configuration information sent by the network device 81; the retransmission related configuration information indicates that the terminal TB retransmits to the terminal 82 in at least two time slots; among them,

The HARQ function of the terminal 82 is turned off.

It should be noted that the specific processing procedures of the network device 81 and the terminal 82 have been described in detail above, and will not be repeated here.

In an exemplary embodiment, the embodiment of the present application also provides a storage medium, that is, a computer storage medium, specifically a computer-readable storage medium, such as a first memory 63 storing a computer program, which can be used by the network device 60 Executed by the first processor 62 to complete the steps described in the aforementioned network device-side method. For another example, it includes a second memory 73 storing a computer program, which can be executed by the second processor 72 of the terminal 70 to complete the steps described in the aforementioned terminal-side method. The computer-readable storage medium may be a memory such as FRAM, ROM, PROM, EPROM, EEPROM, Flash Memory, magnetic surface memory, optical disc, or CD-ROM.

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

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

The above are only the preferred embodiments of the present application, and are not used to limit the protection scope of the present application.

Claims (26)

1. A data transmission method applied to network equipment, including:

   Configure the transmission block TB to be retransmitted to the terminal in at least two time slots; among them,

   The HARQ function of the hybrid automatic repeat request of the terminal is turned off.
2. The method according to claim 1, wherein the method further comprises:

   Retransmit the TB to the terminal in at least two time slots.
3. The method according to claim 1, wherein the at least two time slots are configured with time slot intervals.
4. The method according to claim 1, wherein the positions of symbols configured to transmit the TB in each of the at least two time slots are the same.
5. The method according to claim 1, wherein the related configuration information for retransmission includes at least:

   Retransmission times;

   Retransmit the slot interval of the TB.
6. The method according to claim 1, wherein the retransmission of the configuration TB to the terminal in at least two time slots comprises:

   Configure the TB to be retransmitted to the terminal in at least two time slots in a semi-static manner;

   or,

   Configure the TB to retransmit to the terminal in at least two time slots in a dynamic manner.
7. The method according to claim 6, wherein said configuring the TB in a semi-static manner to retransmit to the terminal in at least two time slots comprises:

   Indicate the relevant configuration information of the retransmission to the terminal through radio resource control RRC signaling.
8. The method according to claim 6, wherein the dynamically configuring the TB to be retransmitted to the terminal in at least two time slots comprises:

   Indicate the related configuration information of retransmission to the terminal through the downlink control information DCI.
9. The method according to claim 8, wherein, when the relevant configuration information of retransmission is indicated to the terminal through DCI, the relevant configuration of retransmission is indicated by multiplexing at least part of all the domains related to HARQ in the DCI information.
10. The method according to claim 9, wherein the method further comprises:

    Redefining the at least part of the domain through RRC signaling.
11. The method according to claim 8, wherein when the relevant configuration information of retransmission is indicated to the terminal through DCI, the relevant configuration information of retransmission is indicated through a newly added field in the DCI.
12. A data transmission method applied to a terminal, including:

    Receiving retransmission related configuration information sent by the network side; the retransmission related configuration information instructing the terminal TB to retransmit to the terminal in at least two time slots; wherein,

    The HARQ function of the terminal is turned off.
13. The method according to claim 12, wherein the method further comprises:

    Using the relevant configuration information of the retransmission, the TB retransmitted by the network side is received in at least two time slots.
14. The method according to claim 12, wherein the at least two time slots are configured with time slot intervals.
15. The method according to claim 13, wherein the retransmitted TB is received at the same symbol position in each of the at least two time slots.
16. The method according to claim 12, wherein said receiving the retransmission-related configuration information sent by the network side comprises:

    Receiving retransmission related configuration information indicated by the network side through RRC signaling;

    or,

    The retransmission related configuration information indicated by the network side through the DCI is received.
17. The method according to claim 16, wherein said receiving the retransmission related configuration information indicated by the network side through DCI comprises:

    The receiving network side multiplexes the retransmission related configuration information indicated by at least part of all the HARQ-related domains in the DCI.
18. The method of claim 17, wherein the method further comprises:

    Receiving the at least part of the domain redefined by the network side through RRC signaling.
19. The method according to claim 16, wherein said receiving the retransmission related configuration information indicated by the network side through DCI comprises:

    Receiving the retransmission related configuration information indicated by the network side through the newly added domain of the DCI.
20. A data transmission device includes:

    The configuration unit is configured to configure the TB to be retransmitted to the terminal in at least two time slots; wherein,

    The HARQ function of the terminal is turned off.
21. A data transmission device includes:

    Receiving retransmission related configuration information sent by the network side; the retransmission related configuration information instructing the terminal TB to retransmit to the terminal in at least two time slots; wherein,

    The HARQ function of the terminal is turned off.
22. A network device includes: a first processor and a first communication interface; wherein,

    The first processor is configured to configure the TB to retransmit to the terminal in at least two time slots through the first communication interface; wherein,

    The HARQ function of the terminal is turned off.
23. A terminal includes: a second processor and a second communication interface; wherein,

    The second processor is configured to receive retransmission related configuration information sent by the network side through the second communication interface; the retransmission related configuration information instructs the terminal TB to retransmit on at least two time slots To the terminal; where,

    The HARQ function of the terminal is turned off.
24. A network device includes: a first processor and a first memory configured to store a computer program that can run on the processor,

    Wherein, the first processor is configured to execute the steps of the method according to any one of claims 1 to 11 when running the computer program.
25. A terminal includes: a second processor and a second memory configured to store a computer program that can run on the processor,

    Wherein, the second processor is configured to execute the steps of the method according to any one of claims 12 to 19 when running the computer program.
26. A storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any one of claims 1 to 11, or implements the method described in any one of claims 12 to 19 step.

Images