CN115460624A - A data transmission method, device and readable storage medium - Google Patents

Abstract

The application discloses a data transmission method, a device and a readable storage medium, which relate to the field of communication technology, so as to improve the reliability of data transmission. The method includes: the terminal preprocesses the data packet to be transmitted according to the high reliability transmission mode configuration information sent by the network device to obtain a physical layer transmission block; when the terminal receives the high reliability transmission mode activation signaling sent by the network device In this case, the terminal transmits the physical layer transport block on resources corresponding to the high reliability transmission mode according to the high reliability transmission mode activation signaling; wherein the high reliability transmission mode activation signaling is used to instruct the terminal Data transmission is based on a highly reliable transmission mode. The embodiments of the present application can improve the reliability of data transmission.

Description

A data transmission method, device and readable storage medium

technical field

The present application relates to the technical field of communication, and in particular to a data transmission method, device and readable storage medium.

Background technique

In the industrial Internet, in addition to traditional parameters such as transmission interval, message size, and delay, the business requirement parameters of some periodic and deterministic communication services also introduce survival time (survival time). Among them, the survival time is used to represent the availability of the service.

Among them, the survival time is defined as: when the data transmission is wrong, start the survival time, also known as entering the survival time state, if there is no packet loss within the validity period of the survival time, then return to the normal state, and consider that the service transmission is available ( availability); if the survival time expires and the data still cannot be transmitted correctly, it is considered that the transmission between the original device and the target device is unavailable.

For service availability, the degree of QoS (Quality of Service, Quality of Service) guarantee for all data packets that a service is mapped to, that is, the air interface transmission reliability guarantee is the same, that is, after the first data packet is lost, subsequent data packets may continue loss, resulting in the unavailability of the entire transmission link.

In the prior art, after a service is mapped to a DRB (Data Radio Bearer, data radio bearer), it is scheduled and transmitted according to corresponding QoS requirements (including reliability parameters). However, for services that require high latency and survival time, there is no mechanism in the prior art to ensure error-free transmission of subsequent data packets after entering the survival time state. Therefore, the reliability of data transmission may be lowered.

Contents of the invention

Embodiments of the present application provide a data transmission method, device, and readable storage medium, so as to improve the reliability of data transmission.

In the first aspect, the embodiment of the present application provides a data transmission method, including:

The terminal preprocesses the data packets to be transmitted according to the high-reliability transmission mode configuration information sent by the network device, and obtains the physical layer transmission block;

When the terminal receives the highly reliable transmission mode activation signaling sent by the network device, the terminal transmits the physical layer on the resources corresponding to the high reliable transmission mode according to the highly reliable transmission mode activation signaling transport block;

Wherein, the high reliability transmission mode activation signaling is used to instruct the terminal to perform data transmission based on the high reliability transmission mode.

Wherein, the configuration information of the highly reliable transmission mode includes:

Time-frequency domain resource occupancy information and modulation and coding schemes of uplink resources, where the time-frequency domain resource occupancy information includes time-frequency resource distribution information except for the start position of the time domain.

Wherein, the configuration information also includes one or more of the following:

The first information is used to indicate activation of PDCP repeated transmission when PDCP (Packet Data Convergence Protocol, packet data convergence protocol) repeated transmission is configured;

The second information is used to indicate the information of the activatable logical channel and/or the information of the cell corresponding to the activatable logical channel in the case of PDCP repeated transmission when PDCP repeated transmission is configured;

The third information is used to indicate the activation of pre-configured resources;

The fourth information is used to indicate to activate the first preconfigured resource among the multiple preconfigured resources.

Wherein, the terminal preprocesses the data packet to be transmitted according to the configuration information to obtain a physical layer transmission block, including:

The terminal preprocesses the data packet to be transmitted according to the time-frequency domain resource occupancy information and the modulation and coding scheme to obtain the physical layer transmission block.

Wherein, when the terminal receives the high reliability transmission mode activation signaling sent by the network device, the terminal transmits the high reliability transmission mode activation signaling on resources corresponding to the high reliability transmission mode Physical layer transport blocks, including:

The terminal determines the time starting point of actually occupying resources for uplink transmission in the highly reliable transmission mode;

The terminal maps the physical layer transmission block to a corresponding physical layer resource for transmission according to the time starting point.

Wherein, the terminal determines the time starting point of actually occupying resources for uplink transmission in the highly reliable transmission mode, including any one of the following steps:

The terminal adds a time offset value to the transmission time point of the highly reliable transmission mode activation signaling to obtain the time starting point of actually occupying resources for uplink transmission in the high reliable transmission mode;

The terminal uses the starting point of time for uplink transmission in the high-reliability transmission mode indicated in the high-reliability transmission mode activation signaling as the start time for actually occupying resources for uplink transmission in the high-reliability transmission mode.

Wherein, the time offset value is the time offset between the time starting point when the terminal actually occupies resources for uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling; the The time offset value is indicated by one or more of the following methods:

The time offset value is carried in the configuration information of the highly reliable transmission mode;

The time offset value is predefined in the protocol;

The time offset value is carried in the high reliability transmission mode activation signaling.

Wherein, the terminal maps the physical layer transmission block to a corresponding physical layer resource for transmission according to the time starting point, including any of the following:

transmit at the time-frequency domain resource location specified for the current cell;

In the case that PDCP repeated transmission is configured, the transmission is performed on the time-frequency domain resource position of the cell corresponding to the activated logical channel;

Transmission is performed on the activated first pre-configured resource.

Wherein, the highly reliable transmission mode activation signaling includes a PDCCH (Physical downlink control channel, physical downlink control channel) command or a HARQ (Hybrid automatic repeat request, hybrid automatic repeat request) NACK (Negative Acknowledgment, negative acknowledgment) command;

Wherein, in the case that the highly reliable transmission mode activation signaling is a PDCCH order, the designated field of the downlink control information DCI carried in the PDCCH order is a preset value.

Wherein, after the terminal receives the highly reliable transmission mode configuration information sent by the network device, the method further includes:

The terminal processes the data packet to be transmitted by using a processing mode corresponding to the second pre-configured resource;

After the terminal preprocesses the data packet to be transmitted according to the highly reliable transmission mode configuration information sent by the network device to obtain the physical layer transmission block, the method further includes:

When the terminal does not receive the highly reliable transmission mode activation signaling sent by the network device, the terminal uses the second pre-configured resource to transmit the processed data packet to be transmitted, and discards the corresponding highly reliable transmission mode physical layer transport block;

The configuration information corresponding to the second pre-configured resource is different from the configuration information of the high-reliability transmission mode.

Wherein, the data packet to be transmitted is a retransmission data packet or a new data packet.

In the second aspect, the embodiment of the present application provides a data transmission method, including:

The network device sends the highly reliable transmission mode configuration information to the terminal;

The network device sends a high-reliability transmission mode activation signaling to the terminal, where the high-reliability transmission mode activation signaling is used to instruct the data transmission to be performed based on the high-reliability transmission mode.

Wherein, the configuration information of the highly reliable transmission mode includes:

Time-frequency domain resource occupancy information and modulation and coding schemes of uplink resources, where the time-frequency domain resource occupancy information includes time-frequency resource distribution information except for the start position of the time domain.

Wherein, the configuration information of the highly reliable transmission mode also includes:

A time offset value, where the time offset value is the time offset between the start of time when the terminal actually occupies resources for uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling .

Wherein, the configuration information also includes one or more of the following:

The first information is used to indicate activation of PDCP repeated transmission when PDCP repeated transmission is configured;

The second information is used to indicate the activatable logical channel and/or the information of the cell corresponding to the activatable logical channel in the case of PDCP repeated transmission when PDCP repeated transmission is configured;

The third information is used to indicate the activation of pre-configured resources;

The fourth information is used to indicate to activate the first preconfigured resource among the multiple preconfigured resources.

Wherein, the high-reliability transmission mode activation signaling includes a time offset value, and the time offset value is the time starting point of resources actually occupied by the terminal for uplink transmission in the high-reliability transmission mode and the high-reliability transmission mode Time offset between transmission time points for activation signaling.

Wherein, the highly reliable transmission mode activation signaling includes a PDCCH order or a HARQ NACK order;

Wherein, in the case that the highly reliable transmission mode activation signaling is a PDCCH order, the designated field of the DCI carried in the PDCCH order is a preset value.

Wherein, the method also includes:

The network device receives a data packet transmitted by the terminal in a high-reliability transmission mode, and the data packet is a retransmission data packet or a new data packet.

Wherein, the network device sends a highly reliable transmission mode activation signaling to the terminal, including:

In a case where it is determined that an error occurs in the uplink transmission, the network device sends a highly reliable transmission mode activation signaling to the terminal.

In the third aspect, the embodiment of the present application also provides a data transmission device applied to a terminal, including a memory, a transceiver, and a processor:

The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

According to the high-reliability transmission mode configuration information sent by the network device, the data packet to be transmitted is preprocessed to obtain the physical layer transmission block;

When receiving the highly reliable transmission mode activation signaling sent by the network device, transmit the physical layer transport block on the resources corresponding to the high reliable transmission mode according to the highly reliable transmission mode activation signaling;

Wherein, the high reliability transmission mode activation signaling is used to instruct the terminal to perform data transmission based on the high reliability transmission mode.

Wherein, the configuration information of the highly reliable transmission mode includes:

Time-frequency domain resource occupancy information and modulation and coding schemes of uplink resources, where the time-frequency domain resource occupancy information includes time-frequency resource distribution information except for the start position of the time domain.

Wherein, the configuration information also includes one or more of the following:

The first information is used to indicate activation of PDCP repeated transmission when the packet data convergence protocol PDCP repeated transmission is configured;

The second information is used to indicate the information of the activatable logical channel and/or the information of the cell corresponding to the activatable logical channel in the case of PDCP repeated transmission when PDCP repeated transmission is configured;

The third information is used to indicate the activation of pre-configured resources;

The fourth information is used to indicate to activate the first preconfigured resource among the multiple preconfigured resources.

Wherein, the processor is used to read the computer program in the memory and perform the following operations:

Preprocessing the data packet to be transmitted according to the resource occupancy information in the time-frequency domain and the modulation and coding scheme, to obtain the physical layer transmission block.

Wherein, the processor is used to read the computer program in the memory and perform the following operations:

Determine the starting point of time when resources are actually occupied by uplink transmission in the high-reliability transmission mode;

According to the time starting point, the physical layer transmission block is mapped to a corresponding physical layer resource for transmission.

Wherein, the processor is used to read the computer program in the memory and perform the following operations:

Adding a time offset value to the transmission time point of the highly reliable transmission mode activation signaling to obtain the time starting point of actually occupying resources for uplink transmission in the high reliable transmission mode;

The starting time of uplink transmission in the high-reliability transmission mode indicated in the activation signaling of the high-reliability transmission mode is used as the time start of actually occupying resources for uplink transmission in the high-reliability transmission mode.

Wherein, the time offset value is the time offset between the time starting point when the terminal actually occupies resources for uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling; the The time offset value is indicated by one or more of the following methods:

The time offset value is carried in the configuration information of the highly reliable transmission mode;

The time offset value is predefined in the protocol;

The time offset value is carried in the high reliability transmission mode activation signaling.

Wherein, the processor is used to read the computer program in the memory and perform the following operations:

transmit at the time-frequency domain resource location specified for the current cell;

In the case that PDCP repeated transmission is configured, the transmission is performed on the time-frequency domain resource position of the cell corresponding to the activated logical channel;

Transmission is performed on the activated first pre-configured resource.

Wherein, the highly reliable transmission mode activation signaling includes a PDCCH order or a HARQ NACK order;

Wherein, in the case that the highly reliable transmission mode activation signaling is a PDCCH order, the designated field of the downlink control information DCI carried in the PDCCH order is a preset value.

Wherein, the processor is used to read the computer program in the memory and perform the following operations:

Processing the data packet to be transmitted by using a processing manner corresponding to the second pre-configured resource;

When the terminal does not receive the highly reliable transmission mode activation signaling sent by the network device, the terminal uses the second pre-configured resource to transmit the processed data packet to be transmitted, and discards the corresponding highly reliable transmission mode physical layer transport block;

The configuration information corresponding to the second pre-configured resource is different from the configuration information of the high-reliability transmission mode.

In the fourth aspect, the embodiment of the present application also provides a data transmission device, which is applied to network equipment, including a memory, a transceiver, and a processor:

The memory is used to store computer programs; the transceiver is used to send and receive data under the control of the processor; the processor is used to read the computer programs in the memory and perform the following operations:

Send high-reliability transmission mode configuration information to the terminal;

Sending high-reliability transmission mode activation signaling to the terminal, where the high-reliability transmission mode activation signaling is used to instruct the data transmission to be performed based on the high-reliability transmission mode.

Wherein, the processor is used to read the computer program in the memory and perform the following operations:

receiving a data packet transmitted by the terminal in a high-reliability transmission mode, where the data packet is a retransmission data packet or a new data packet.

Wherein, the processor is used to read the computer program in the memory and perform the following operations:

In a case where it is determined that an error occurs in the uplink transmission, a highly reliable transmission mode activation signaling is sent to the terminal.

In the fifth aspect, the embodiment of the present application also provides a data transmission device applied to a terminal, including:

The first processing unit is configured to preprocess the data packets to be transmitted according to the high-reliability transmission mode configuration information sent by the network device to obtain a physical layer transmission block;

The first transmission unit is configured to, in the case of receiving the highly reliable transmission mode activation signaling sent by the network device, transmit the physical layer transport block;

Wherein, the high reliability transmission mode activation signaling is used to instruct the terminal to perform data transmission based on the high reliability transmission mode.

In the sixth aspect, the embodiment of the present application also provides a data transmission device, which is applied to network equipment, and is characterized in that,

The first sending unit is configured to send high reliability transmission mode configuration information to the terminal;

The second sending unit is configured to send high reliability transmission mode activation signaling to the terminal, where the high reliability transmission mode activation signaling is used to instruct the data transmission based on the high reliability transmission mode.

In the seventh aspect, the embodiment of the present application further provides a processor-readable storage medium, where the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to perform the above-mentioned method .

In the embodiment of the present application, the terminal preprocesses the data packets to be transmitted according to the high-reliability transmission mode configuration information sent by the network device to form a physical layer transmission block, and when receiving the high-reliability transmission mode activation signaling, The physical layer transport block is transmitted on resources corresponding to the reliable transmission mode. Through the above process, the data to be transmitted can be transmitted through resources in a highly reliable transmission mode, thereby improving the reliability of data transmission.

Description of drawings

Fig. 1 is one of the flowcharts of the data transmission method provided by the embodiment of the present application;

Fig. 2 is a schematic diagram of data processing provided by the embodiment of the present application;

FIG. 3 is the second flowchart of the data transmission method provided by the embodiment of the present application;

Fig. 4 is the third flowchart of the data transmission method provided by the embodiment of the present application;

Fig. 5 is a schematic diagram of data processing provided by the embodiment of the present application;

FIG. 6 is the fourth flowchart of the data transmission method provided by the embodiment of the present application;

Fig. 7 is the fifth flowchart of the data transmission method provided by the embodiment of the present application;

Fig. 8 is a schematic diagram of data processing provided by the embodiment of the present application;

FIG. 9 is the sixth flowchart of the data transmission method provided by the embodiment of the present application;

FIG. 10 is one of the structural diagrams of the data processing device provided by the embodiment of the present application;

Fig. 11 is the second structural diagram of the data processing device provided by the embodiment of the present application;

Fig. 12 is the third structural diagram of the data processing device provided by the embodiment of the present application;

FIG. 13 is the fourth structural diagram of the data processing device provided by the embodiment of the present application.

detailed description

The term "and/or" in the embodiments of this application describes the association relationship of associated objects, indicating that there may be three relationships, for example, A and/or B, which may mean: A exists alone, A and B exist simultaneously, and B exists alone These three situations. The character "/" generally indicates that the contextual objects are an "or" relationship.

The term "plurality" in the embodiments of the present application refers to two or more, and other quantifiers are similar.

The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

Embodiments of the present application provide a data transmission method, device, and readable storage medium, so as to improve the reliability of data transmission.

Among them, the method and the device are conceived based on the same application. Since the principle of solving problems of the method and the device is similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.

Referring to Fig. 1, Fig. 1 is a flow chart of the data transmission method provided by the embodiment of the present application, as shown in Fig. 1, including the following steps:

Step 101, the terminal performs preprocessing on the data packet to be transmitted according to the high-reliability transmission mode configuration information sent by the network device, and obtains a physical layer transmission block.

The terminal may receive highly reliable transmission mode configuration information sent by the network device through RRC (Radio Resource Control, radio resource control) signaling. In this embodiment of the present application, the configuration information of the highly reliable transmission mode includes: time-frequency domain resource occupancy information of uplink resources and modulation and coding schemes (such as MCS (Modulation and coding scheme, modulation and coding scheme)), the time-frequency domain The resource occupancy information includes time-frequency resource distribution information except the start position of the time domain, that is, does not include the start position of the time domain. Wherein, the time-frequency domain resource occupation information includes: time-domain resource width (such as how many symbols are occupied), the relative position of the time-domain unit occupied within the time-domain resource width, the frequency-domain resource width, and the Subcarrier location, etc.

Optionally, the highly reliable transmission mode configuration information further includes at least one of the following information:

The first information is used to indicate activation of PDCP duplication when PDCP duplication is configured;

The second information is used to indicate information of a logical channel (such as an RLC (Radio Link Control, radio link control) channel) that can be activated in the case of PDCP repeated transmission when PDCP repeated transmission is configured and/or Information about the cell corresponding to the activatable logical channel;

The third information is used to indicate the activation of pre-configured resources; the pre-configured resources may include multiple;

The fourth information is used to indicate to activate the first preconfigured resource among the multiple preconfigured resources, for example, the serial number of the first preconfigured resource.

Optionally, the configuration information of the high-reliability transmission mode further includes a time offset value (offset value), and the time offset value is the time starting point and the time when the terminal actually occupies resources for uplink transmission in the high-reliability transmission mode. The time offset between the transmission time points of the high-reliability transmission mode activation signaling. The time offset value may also be carried in subsequent high-reliability transmission mode activation signaling, or agreed upon in a protocol.

Wherein, the highly reliable transmission mode configuration information may be for the terminal, or for a specific logical channel, or for a DRB (Data Radio Bearer, data radio bearer), or for HARQ retransmission.

In this step, the terminal performs preprocessing on the data packet to be transmitted according to the time-frequency domain resource occupancy information and the modulation and coding scheme to obtain the physical layer transmission block. The data packet to be transmitted is a retransmission data packet or a new data packet.

In this embodiment of the present application, the physical layer transport block can be expressed as a time-frequency domain resource bit occupancy map, and after the time domain starting point is determined, the physical layer transport block can be directly mapped to a specific time-frequency resource position. That is to say, in this embodiment of the application, the terminal forms a virtual time-frequency resource occupancy map according to the high-reliability transmission mode configuration information. Resource mapping and transfer.

Step 102: When the terminal receives the highly reliable transmission mode activation signaling sent by the network device, the terminal transmits the The physical layer transport block described above.

Wherein, the high-reliability transmission mode activation signaling is used to instruct the terminal to perform data transmission based on the high-reliability transmission mode, for example, to activate the terminal to perform data transmission based on the high-reliability transmission mode. Wherein, the highly reliable transmission mode may be understood as a transmission mode with relatively high reliability, for example, in the highly reliable transmission mode, the MCS corresponds to a lower bit error rate and the like.

Specifically, in this step, the terminal determines the time starting point of resources actually occupied by uplink transmission in the highly reliable transmission mode, and maps the physical layer transmission block to corresponding physical layer resources according to the time starting point to transfer. Wherein, the physical layer resources refer to physical layer time-frequency domain resources.

Specifically, the time starting point may be determined in any of the following ways:

(1) The terminal adds a time offset value to the transmission time point of the high-reliability transmission mode activation signaling to obtain the time start point of resources actually occupied by uplink transmission in the high-reliability transmission mode.

Wherein, the time offset value may be indicated in at least one of the following ways:

The time offset value is carried in the configuration information of the highly reliable transmission mode;

The time offset value is predefined in the protocol;

The time offset value is carried in the high reliability transmission mode activation signaling.

In practical applications, when the time offset value is configured in both the high reliability transmission mode configuration information and the high reliability transmission mode activation signaling, the time offset value carried in the high reliability transmission mode activation signaling shall prevail. Generally speaking, the value of the time offset is much smaller than the time interval between the terminal receiving the scheduling command and the uplink transmission in the prior art.

Wherein, the transmission time point may be understood as a transmission start time point of the high-reliability transmission mode activation signaling, or may be understood as a transmission completion time point of the high-reliability transmission mode activation signaling.

(2) The terminal uses the starting point of time when uplink transmission in the high-reliability transmission mode indicated in the high-reliability transmission mode activation signaling is used as the time start point of actually occupying resources for uplink transmission in the high-reliability transmission mode. That is, in this way, the highly reliable transmission mode activation signaling directly indicates the time starting point when uplink transmission is performed in the high reliable transmission mode.

During the process that the terminal maps the physical layer transport block to the corresponding physical layer resource for transmission according to the time starting point, the terminal maps the physical layer transport block to the corresponding physical layer resource according to the time starting point transmission on physical layer resources, including any of the following:

transmit at the time-frequency domain resource location specified for the current cell;

In the case that PDCP repeated transmission is configured, the transmission is performed on the time-frequency domain resource position of the cell corresponding to the activated logical channel;

Transmission is performed on the activated first pre-configured resource. In this manner, after the first preconfigured resource is activated, transmission can be performed on the activated first preconfigured resource. The activated first preconfigured resource may be deactivated automatically after the current transmission is completed, or may be deactivated according to a deactivation command sent by the network device.

In this embodiment of the present application, the highly reliable transmission mode activation signaling includes a PDCCH order or a HARQ NACK order.

Wherein, when the highly reliable transmission mode activation signaling is a PDCCH order, the specified field of DCI carried in the PDCCH order is a preset value. For example, the frequency domain resource assignment field (Frequency domain resource assignment) of the DCI is all 0s or all 1s. Optionally, the PDCCH command may indicate a time start position or a time offset value (offset value) for uplink data transmission in a highly reliable transmission mode, and the time start position or time offset value may be in the time domain resource allocation field of DCI ( Time domain resource assignment), or in other identified domains.

Wherein, when the high-reliability transmission mode activation signaling is a HARQ NACK command, the time starting point of actually occupying resources for uplink transmission in the high-reliability transmission mode is the transmission time of HARQ NACK plus a time offset value, and the time offset value It may be configured by RRC signaling or agreed by a protocol.

In the embodiment of the present application, the terminal preprocesses the data packets to be transmitted according to the high-reliability transmission mode configuration information sent by the network device to form a physical layer transmission block, and when receiving the high-reliability transmission mode activation signaling, The physical layer transport block is transmitted on resources corresponding to the reliable transmission mode. Through the above process, the data to be transmitted can be transmitted through resources in a highly reliable transmission mode, thereby improving the reliability of data transmission.

Optionally, on the basis of the above embodiments, after step 101, the method may further include:

The terminal processes the data packet to be transmitted by using a processing mode corresponding to the second pre-configured resource. Then, if the terminal does not receive the highly reliable transmission mode activation signaling sent by the network device, the terminal uses the second preconfigured resource to transmit the processed data packet to be transmitted, and discards the corresponding high Physical layer transport block for reliable transport mode. Wherein, the configuration information corresponding to the second pre-configured resource is different from the configuration information of the highly reliable transmission mode.

That is to say, if the terminal does not receive the high-reliability transmission mode activation signaling of the network device, then the terminal can transmit the data packet to be transmitted according to the scheduling of the network device or other pre-configured resources, and will transmit the data packet according to the above-described Physical layer transport blocks formed by preprocessing are discarded. It should be noted that, in the above process, the data packet carried by the physical layer transport block is not discarded along with the preprocessed physical layer transport block.

For example, if there are other preconfigured resources, when the data packet can be transmitted on the preconfigured resource, the terminal organizes data according to the existing preconfigured resource. If there is no uplink transmission indicated by the high-reliability transmission mode activation signaling at the pre-configured resource transmission time, that is, no high-reliability transmission mode activation signaling is received, the terminal transmits data according to the data transmission mode on the existing pre-configured resources, And the physical layer transmission block of the highly reliable transmission mode formed for the data packet may be discarded. That is, when a data packet arrives, the terminal can preprocess it according to the highly reliable transmission mode, and at the same time, the terminal can also perform processing according to other preconfigured resource instructions. These two processes may be performed in parallel, and which uplink transmission is finally transmitted depends on whether the high-reliability transmission mode activation signaling is received.

Referring to FIG. 2 , when a data packet arrives, the terminal immediately preprocesses the data packet according to the configuration information of the high-reliability transmission mode (Trop1). When reaching the pre-configured resource processing time boundary, if no high-reliability transmission mode activation signaling is received (for example, no high-reliability transmission mode activation signaling is received when reaching the boundary of Trop2), then the terminal follows the pre-configured resource configuration The data packets are organized into pre-configured resources for transmission, and at the same time, the physical layer transmission blocks obtained after preprocessing according to the configuration information of the high-reliability transmission mode are discarded. Through this processing method, the reliable transmission of data can be further ensured.

Referring to Fig. 3, Fig. 3 is a flow chart of the data transmission method provided by the embodiment of the present application, as shown in Fig. 3, including the following steps:

Step 301, the network device sends configuration information of a highly reliable transmission mode to the terminal.

In a practical application, the network device may send high reliability transmission mode configuration information to the terminal through RRC signaling. Wherein, the meaning of the high-reliability transmission mode configuration information is the same as that described in the foregoing embodiments.

Step 302, the network device sends a high reliability transmission mode activation signaling to the terminal, where the high reliability transmission mode activation signaling is used to instruct the data transmission based on the high reliability transmission mode.

Optionally, after the network device receives the uplink transmission from the terminal, the network device can judge the accuracy of the uplink transmission from the terminal, so as to determine whether to activate the high-reliability transmission mode. In a case where it is determined that an error occurs in the uplink transmission, the network device sends a highly reliable transmission mode activation signaling to the terminal. The high-reliability transmission mode activation signaling includes a PDCCH order or a HARQ NACK order; wherein, when the high-reliability transmission mode activation signaling is a PDCCH order, the designated field of DCI carried in the PDCCH order is a preset value.

In the embodiment of the present application, the terminal preprocesses the data packets to be transmitted according to the high-reliability transmission mode configuration information sent by the network device to form a physical layer transmission block, and when receiving the high-reliability transmission mode activation signaling, The physical layer transport block is transmitted on resources corresponding to the reliable transmission mode. Through the above process, the data to be transmitted can be transmitted through resources in a highly reliable transmission mode, thereby improving the reliability of data transmission.

In the following, the specific implementation process of the embodiment of the present application will be described in conjunction with different embodiments, where the network device is taken as an example of a base station.

Referring to FIG. 4, FIG. 4 is a flowchart of a data transmission method according to an embodiment of the present application, including:

Step 401, the base station uses RRC signaling to configure the highly reliable transmission mode for the terminal, and sends high reliable transmission mode configuration information to the terminal, the configuration information may include:

(1) Time-frequency domain occupancy (frequency-domain resource distribution, time-domain length, etc.) and modulation and coding schemes (MCS, etc.) of uplink resources other than the starting point in the time domain.

(2) Time offset value.

The time offset value is a time offset between the time starting point of actually occupying resources when the terminal performs uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling. Of course, the configuration information may not include the time offset value.

Alternatively, the time offset value may also be predefined in the protocol. Alternatively, it may also be carried through the following high-reliability transmission mode activation signaling.

The terminal receives the high-reliability transmission mode configuration information sent by the base station.

Step 402, the terminal performs uplink transmission, and sends an uplink data packet.

Step 403 , the terminal preprocesses the sent data packets according to the high-reliability transmission mode configuration information to form a physical layer transmission block.

Step 404, the base station receives the uplink transmission of the terminal, and determines whether to activate the high-reliability transmission mode according to the correctness of the uplink transmission of the terminal.

Step 405, when the high reliability transmission mode needs to be activated, the base station sends a PDCCH command or HARQ NACK to the terminal for activating the high reliability transmission mode. If the physical layer signaling for activating the highly reliable transmission mode is a PDCCH command, the PDCCH command may carry a time offset between the PDCCH command and the start of the uplink transmission resource PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel).

Step 406: If the high-reliability transmission mode activation signaling from the base station is received, then the terminal obtains the time offset value according to the protocol, or from the high-reliability transmission mode configuration information, or from the high-reliability transmission mode activation signaling, according to The time offset value determines the time starting point of resources actually occupied during uplink transmission in the highly reliable transmission mode, and according to the time starting point, the physical layer transmission block is mapped to the actual resource of the physical layer for transmission.

Step 407, if the high-reliability transmission mode activation signaling of the base station is not received, for example, the base station schedules retransmissions in other ways (such as conventional scheduling commands), or the base station uses the HARQ process for sending uplink data in step 402 to schedule new transmissions, then, The terminal performs uplink transmission according to the existing configured resources, and discards the physical layer transmission block obtained by preprocessing.

Step 408, the base station receives the retransmission of the data packet on the uplink resource (in a high-reliability transmission mode), that is, the retransmission of the data packet that failed the previous transmission.

As shown in FIG. 5 , through the process of this embodiment, the base station configures a highly reliable transmission mode for the terminal. Afterwards, the terminal performs uplink data transmission of PUSCH1 (1). The terminal preprocesses the data packet to be transmitted (retransmitted data packet in this embodiment) according to the configuration information, obtains the physical layer transmission block (2), and prepares for activation at the same time. At the same time, the terminal can also prepare for uplink transmission according to the existing configuration resources (5). If receiving the high-reliability transmission mode activation signaling (3), the terminal maps the physical layer transmission block to the actual physical layer time-frequency domain resource (4). In the above process, the pre-processing according to the configuration information of the high-reliability transmission mode can be performed in parallel with the preparation of the terminal for uplink transmission according to the existing configuration resources, thereby saving the time for the preparation (5) of the uplink transmission, so that the base station can Service data packets with a small end-to-end delay (such as 0.5ms) are scheduled for retransmission. Therefore, through this embodiment, a shorter retransmission time interval can be realized than in the prior art, so that HARQ retransmission can also be performed on ultra-low-latency services, and the reliability of ultra-low-latency services can be better guaranteed.

Referring to FIG. 6, FIG. 6 is a flowchart of a data transmission method according to an embodiment of the present application, including:

Step 601, the base station uses RRC signaling to configure the highly reliable transmission mode for the terminal, and sends high reliable transmission mode configuration information to the terminal, the configuration information may include:

(1) Time-frequency domain occupancy (frequency-domain resource distribution, time-domain length, etc.) and modulation and coding schemes (MCS, etc.) of uplink resources other than the starting point in the time domain.

(2) Time offset value.

The time offset value is a time offset between the time starting point of actually occupying resources when the terminal performs uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling. Of course, the configuration information may not include the time offset value.

Alternatively, the time offset value may also be predefined in the protocol. Alternatively, it may also be carried through the following high-reliability transmission mode activation signaling.

The terminal receives the high-reliability transmission mode configuration information sent by the base station.

Step 602, the terminal performs uplink transmission, and sends an uplink data packet.

Step 603, when a new data packet arrives, the terminal performs preprocessing according to the high-reliability transmission mode configuration information to form a physical layer transmission block.

Step 604, the base station receives the uplink transmission of the terminal, and determines whether to activate the high-reliability transmission mode according to the correctness of the uplink transmission of the terminal.

Step 605, when the high reliability transmission mode needs to be activated, the base station sends a PDCCH command or HARQ NACK to the terminal for activating the high reliability transmission mode. If the physical layer signaling for activating the highly reliable transmission mode is a PDCCH order, the PDCCH order may carry a time offset between the PDCCH order and the start of the uplink transmission resource PUSCH.

Step 606: If the high-reliability transmission mode activation signaling of the base station is received, then the terminal obtains the time offset value according to the protocol, or from the high-reliability transmission mode configuration information, or from the high-reliability transmission mode activation signaling, according to The time offset value determines the time starting point of resources actually occupied during uplink transmission in the highly reliable transmission mode, and according to the time starting point, the physical layer transmission block is mapped to the actual resource of the physical layer for transmission.

Step 607: If the high-reliability transmission mode activation signaling from the base station is not received, for example, the base station schedules retransmissions in other ways (such as conventional scheduling commands), then the terminal performs uplink transmission according to the existing configuration resources, and discards the pre-processed obtained physical layer transport block.

Step 608, the base station receives the data packet transmission sent by the terminal on the uplink resource (in a high-reliability transmission mode).

Continue referring to FIG. 5, the process of this embodiment is basically the same as that shown in FIG. 5, the difference is that in this embodiment, what is transmitted in the high-reliability transmission mode is the physical layer transmission block of the new data packet, that is, What is transmitted in PUSCH2 is not a retransmission of the transmission in PUSCH1, but a new data packet.

In this embodiment, after the business data packet is lost and enters the survival time, the terminal can transmit the next data packet in the manner specified by the high-reliability transmission mode within the shortest delay, thereby ensuring the reliability of the next data packet , so as to ensure the recovery of service data packet transmission and prevent the service from entering an unavailable state.

Referring to FIG. 7, FIG. 7 is a flowchart of a data transmission method according to an embodiment of the present application, including:

Step 701. The base station uses RRC signaling to configure the highly reliable transmission mode for the terminal, and sends high reliable transmission mode configuration information to the terminal. The configuration information may include:

(1) Time-frequency domain occupancy (frequency-domain resource distribution, time-domain length, etc.) and modulation and coding schemes (MCS, etc.) of uplink resources other than the starting point in the time domain.

(2) When PDCP duplication is configured, PDCP transmission can be activated, and/or the RLC channel and/or corresponding cell can be activated.

(3) Time offset value.

The time offset value is a time offset between the time starting point of actually occupying resources when the terminal performs uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling. Of course, the configuration information may not include the time offset value.

Alternatively, the time offset value may also be predefined in the protocol. Alternatively, it may also be carried through the following high-reliability transmission mode activation signaling.

The terminal receives the high-reliability transmission mode configuration information sent by the base station.

Step 702, the terminal performs uplink transmission, and sends an uplink data packet.

Step 703, when the new data packet (the data packet and the data packet transmitted in step 702 is the same service or the data packet of the same DRB) arrives, the terminal performs preprocessing according to the high reliability transmission mode configuration information to form a physical layer transmission block .

Step 704, the base station receives the uplink transmission of the terminal, and determines whether to activate the high-reliability transmission mode according to the correctness of the uplink transmission of the terminal.

Step 705, when the high reliability transmission mode needs to be activated, the base station sends a PDCCH command or HARQ NACK to the terminal for activating the high reliability transmission mode. If the physical layer signaling for activating the highly reliable transmission mode is a PDCCH order, the PDCCH order may carry a time offset between the PDCCH order and the start of the uplink transmission resource PUSCH.

Step 706: If the high-reliability transmission mode activation signaling from the base station is received, then the terminal obtains the time offset value according to the protocol, or from the high-reliability transmission mode configuration information, or from the high-reliability transmission mode activation signaling, according to The time offset value determines the time starting point of actually occupying resources when performing uplink transmission in the high-reliability transmission mode, and activates new RLC channels and cells. On the primary RLC channel and the newly activated secondary RLC channel, according to the determined starting point of uplink resources , and map the physical layer transmission block to the actual resources of the physical layer for transmission (repeated transmission on multiple RLC channels).

Step 707: If the high-reliability transmission mode activation signaling from the base station is not received, for example, the base station schedules retransmissions in other ways (such as conventional scheduling commands), then the terminal performs uplink transmission according to existing configuration resources, and discards the pre-processed obtained physical layer transport block.

Step 708, the base station activates the RLC channel and cell indicated in the configuration information, and receives the data packet sent by the terminal on the uplink resource according to the time starting point of the uplink resource determined according to the time offset value on the primary RLC channel and the newly activated RLC channel Transmission (for high-reliability transmission mode).

As shown in FIG. 8, in the case of configuring PDCP repeated transmission, if the high-reliability transmission mode activation signaling of the base station is received, the terminal activates a new RLC channel (such as RLC2, RLC3, RLC4) and a cell. On the newly activated secondary RLC channel, according to the determined starting point of the uplink resource, the physical layer transport block is mapped to the actual resource of the physical layer for transmission (transmission is repeated on multiple RLC channels).

In the embodiment of the present application, in addition to performing the transmission in the highly reliable transmission mode with the shortest delay in the local cell, it is also possible to quickly activate the PDCP repeated transmission of other RLC entities and cells. If the channel of this cell suddenly suffers from deep fading, using other RLC channels and cells for PDCP repeated transmission can better achieve the correct transmission of the next data packet, ensure service recovery, and prevent the service from entering an unavailable state.

Referring to FIG. 9, FIG. 9 is a flowchart of a data transmission method according to an embodiment of the present application, including:

Step 901. The base station uses RRC signaling to configure the highly reliable transmission mode for the terminal, and sends high reliable transmission mode configuration information to the terminal. The configuration information may include:

(1) Time-frequency domain occupancy (frequency-domain resource distribution, time-domain length, etc.) and modulation and coding schemes (MCS, etc.) of uplink resources other than the starting point in the time domain.

(2) When PDCP duplication is configured, PDCP transmission can be activated, and/or the RLC channel and/or corresponding cell can be activated.

(3) An indication of the activated preconfigured resource, and/or, the number of the activated preconfigured resource.

(4) Time offset value.

The time offset value is a time offset between the time starting point of actually occupying resources when the terminal performs uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling. Of course, the configuration information may not include the time offset value.

Alternatively, the time offset value may also be predefined in the protocol. Alternatively, it may also be carried through the following high-reliability transmission mode activation signaling.

The terminal receives the high-reliability transmission mode configuration information sent by the base station.

Step 902, the terminal performs uplink transmission, and sends an uplink data packet.

Step 903, when a new data packet (the data packet and the data packet transmitted in step 902 is the same service or the same DRB data packet) arrives, the terminal performs preprocessing according to the high reliability transmission mode configuration information to form a physical layer transmission block .

Step 904, the base station receives the uplink transmission of the terminal, and determines whether to activate the high-reliability transmission mode according to the correctness of the uplink transmission of the terminal.

Step 905, when the high reliability transmission mode needs to be activated, the base station sends a PDCCH command or HARQ NACK to the terminal for activating the high reliability transmission mode. If the physical layer signaling for activating the highly reliable transmission mode is a PDCCH order, the PDCCH order may carry a time offset between the PDCCH order and the start of the uplink transmission resource PUSCH.

Step 906: If the high-reliability transmission mode activation signaling from the base station is received, then the terminal obtains the time offset value according to the protocol, or from the high-reliability transmission mode configuration information, or from the high-reliability transmission mode activation signaling, according to The time offset value determines the time starting point of actually occupying resources when performing uplink transmission in the highly reliable transmission mode, and activates the pre-configured resources of the current cell. If it is determined according to the configuration information that there is a newly activated cell for repeated transmission, then optionally, the preconfigured resource corresponding to the activated preconfigured resource number of the corresponding cell is activated at the same time (optional). According to the determined starting point of the uplink resource, the physical layer transport block is mapped to the actual resource of the physical layer for transmission.

Step 907: If the high-reliability transmission mode activation signaling from the base station is not received, for example, the base station schedules retransmissions in other ways (such as regular scheduling commands), then the terminal performs uplink transmission according to the existing configuration resources, and discards the pre-processed obtained physical layer transport block.

Step 908, the base station activates the pre-configured resources of the current cell according to the configuration information. If according to the configuration information in step 901, there is a newly activated cell for repeated transmission, the base station simultaneously activates the preconfigured resource (optional) corresponding to the activated preconfigured resource number of the corresponding cell. On the activated pre-configured resources, uplink transmission is received (in high reliability transmission mode).

In the embodiment of this application, the consideration of the activation of pre-configured resources is further added. By activating the pre-configured resources, the service data will be transmitted in a high-reliability transmission mode for a period of time after the corresponding pre-configured resources are activated, which is suitable for different survival time parameter.

It can be seen from the above description that in the embodiment of this application, a method for flexibly configuring and activating the high-reliability transmission mode is proposed. When the service transmission of the terminal enters the survival time state, the high-reliability transmission can be scheduled or activated in time mode, thereby reducing the probability of transmission link unavailability, which can improve the feasibility of overall business data transmission in the industrial Internet.

It should be noted that, in the embodiment of this application, "the terminal receives the high-reliability transmission mode activation signaling from the network device" and "the terminal preprocesses the data packet to be transmitted according to the high-reliability transmission mode configuration information sent by the network device, and obtains the physical There is no strict sequence relationship between these two processes. That is, the terminal can first receive the high-reliability transmission mode activation signaling, and then preprocess the data packets to be transmitted according to the high-reliability transmission mode configuration information sent by the network device; The data packets to be transmitted are preprocessed to obtain the physical layer transmission block, and then the highly reliable transmission mode activation signaling of the network equipment is received.

The technical solutions provided by the embodiments of the present application can be applied to various systems, especially 5G systems. For example, the applicable system may be global system of mobile communication (GSM) system, code division multiple access (code division multiple access, CDMA) system, wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) general packet radio General packet radio service (GPRS) system, long term evolution (long term evolution, LTE) system, LTE frequency division duplex (frequency division duplex, FDD) system, LTE time division duplex (time division duplex, TDD) system, advanced long-term Long term evolution advanced (LTE-A) system, universal mobile telecommunications system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G new air interface (New Radio, NR) system, etc. . These various systems include end devices and network devices. The system may also include a core network part, such as an evolved packet system (Evloved Packet System, EPS), a 5G system (5GS), and the like.

The terminal device involved in this embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the names of the terminal equipment may be different. For example, in a 5G system, the terminal equipment may be called user equipment (User Equipment, UE). The wireless terminal device can communicate with one or more core networks (Core Network, CN) via the radio access network (Radio Access Network, RAN), and the wireless terminal device can be a mobile terminal device, such as a mobile phone (or called a "cellular "telephones) and computers with mobile terminal equipment, such as portable, pocket, hand-held, computer built-in or vehicle-mounted mobile devices, which exchange language and/or data with the radio access network. For example, Personal Communication Service (Personal Communication Service, PCS) telephone, cordless telephone, Session Initiated Protocol (Session Initiated Protocol, SIP) telephone, Wireless Local Loop (Wireless Local Loop, WLL) station, Personal Digital Assistant (Personal Digital Assistant, PDA) and other devices. The wireless terminal equipment may also be called a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, A remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), and a user device (user device) are not limited in this embodiment of the application.

The network device involved in this embodiment of the present application may be a base station, and the base station may include multiple cells that provide services for terminals. Depending on the specific application, the base station can also be called an access point, or it can be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to interchange received over-the-air frames with Internet Protocol (IP) packets and act as a router between the wireless terminal device and the rest of the access network, which can include the Internet Protocol (IP) communication network. Network devices may also coordinate attribute management for the air interface. For example, the network device involved in the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in Global System for Mobile communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA). ), it can also be a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or it can be an evolved network device in a long term evolution (long term evolution, LTE) system (evolutional Node B, eNB or e-NodeB), the 5G base station (gNB) in the 5G network architecture (next generation system), or the home evolved Node B (HeNB), relay node (relaynode), The home base station (femto), pico base station (pico), etc. are not limited in this embodiment of the present application. In some network structures, a network device may include a centralized unit (centralized unit, CU) node and a distributed unit (distributed unit, DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

One or more antennas can be used between the network device and the terminal device to perform Multi-Input Multi-Output (MIMO) transmission, and the MIMO transmission can be Single User MIMO (Single User MIMO, SU-MIMO) or Multi-User MIMO ( Multiple User MIMO, MU-MIMO). According to the shape and number of root antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or diversity transmission, precoding transmission, or beamforming transmission, etc.

As shown in FIG. 10, the data transmission device of the embodiment of the present application is applied to network equipment, including: a processor 1000, configured to read the program in the memory 1020, and perform the following process:

Send high-reliability transmission mode configuration information to the terminal;

Sending high-reliability transmission mode activation signaling to the terminal, where the high-reliability transmission mode activation signaling is used to instruct the data transmission to be performed based on the high-reliability transmission mode.

The transceiver 1010 is used for receiving and sending data under the control of the processor 1000 .

Wherein, in FIG. 10 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1000 and various circuits of the memory represented by the memory 1020 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 1010 may be a plurality of elements, including a transmitter and a receiver, providing a means for communicating with various other devices over transmission media. The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1000 when performing operations.

The processor 1010 may be a central processing device (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.

The processor 1000 is responsible for managing the bus architecture and general processing, and the memory 1020 can store data used by the processor 1000 when performing operations.

The processor 1000 is also used to read the program and perform the following steps:

receiving a data packet transmitted by the terminal in a high-reliability transmission mode, where the data packet is a retransmission data packet or a new data packet.

The processor 1000 is also used to read the program and perform the following steps:

In a case where it is determined that an error occurs in the uplink transmission, a highly reliable transmission mode activation signaling is sent to the terminal.

Wherein, for the meaning of the configuration information of the high-reliability transmission mode, reference may be made to the description of the foregoing embodiments.

What needs to be explained here is that the above-mentioned device provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect. The part and the beneficial effect are described in detail.

As shown in FIG. 11, the data transmission device of the embodiment of the present application is applied to a terminal, and includes: a processor 1100, configured to read a program in a memory 1120, and perform the following process:

According to the high-reliability transmission mode configuration information sent by the network device, the data packet to be transmitted is preprocessed to obtain the physical layer transmission block;

When receiving the highly reliable transmission mode activation signaling sent by the network device, transmit the physical layer transport block on the resources corresponding to the high reliable transmission mode according to the highly reliable transmission mode activation signaling;

Wherein, the high reliability transmission mode activation signaling is used to instruct the terminal to perform data transmission based on the high reliability transmission mode.

The transceiver 1110 is used for receiving and sending data under the control of the processor 1100 .

Wherein, in FIG. 11 , the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by the processor 1100 and various circuits of the memory represented by the memory 1120 are linked together. The bus architecture can also link together various other circuits such as peripherals, voltage regulators, and power management circuits, etc., which are well known in the art and therefore will not be further described herein. The bus interface provides the interface. Transceiver 1110 may be a plurality of elements, including a transmitter and a receiver, providing a means for communicating with various other devices over transmission media. For different user equipments, the user interface 1130 may also be an interface capable of connecting externally and internally to required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 when performing operations.

The processor 1110 may be a central processor (CPU), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field-Programmable Gate Array, FPGA) or a complex programmable logic device (Complex Programmable Logic Device, CPLD), the processor can also adopt a multi-core architecture.

The processor is used to execute any one of the methods provided in the embodiments of the present application according to the obtained executable instructions by calling the computer program stored in the memory. The processor and memory may also be physically separated.

Wherein, the configuration information of the highly reliable transmission mode includes:

Time-frequency domain resource occupancy information and modulation and coding schemes of uplink resources, where the time-frequency domain resource occupancy information includes time-frequency resource distribution information except for the start position of the time domain.

Wherein, the configuration information also includes one or more of the following:

The first information is used to indicate activation of PDCP repeated transmission when the packet data convergence protocol PDCP repeated transmission is configured;

The second information is used to indicate the information of the activatable logical channel and/or the information of the cell corresponding to the activatable logical channel in the case of PDCP repeated transmission when PDCP repeated transmission is configured;

The third information is used to indicate the activation of pre-configured resources;

The fourth information is used to indicate to activate the first preconfigured resource among the multiple preconfigured resources.

Wherein, the processor 1100 is configured to read the computer program in the memory and perform the following operations:

Preprocessing the data packet to be transmitted according to the resource occupancy information in the time-frequency domain and the modulation and coding scheme, to obtain the physical layer transmission block.

Wherein, the processor 1100 is configured to read the computer program in the memory and perform the following operations:

Determine the starting point of time when resources are actually occupied by uplink transmission in the high-reliability transmission mode;

According to the time starting point, the physical layer transmission block is mapped to a corresponding physical layer resource for transmission.

Wherein, the processor 1100 is configured to read the computer program in the memory and perform the following operations:

Adding a time offset value to the transmission time point of the highly reliable transmission mode activation signaling to obtain the time starting point of actually occupying resources for uplink transmission in the high reliable transmission mode;

The starting time of uplink transmission in the high-reliability transmission mode indicated in the activation signaling of the high-reliability transmission mode is used as the time start of actually occupying resources for uplink transmission in the high-reliability transmission mode.

Wherein, the time offset value is the time offset between the time starting point when the terminal actually occupies resources for uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling; the The time offset value is indicated by one or more of the following methods:

The time offset value is carried in the configuration information of the highly reliable transmission mode;

The time offset value is predefined in the protocol;

The time offset value is carried in the high reliability transmission mode activation signaling.

Wherein, the processor 1100 is configured to read the computer program in the memory and perform the following operations:

transmit at the time-frequency domain resource location specified for the current cell;

In the case that PDCP repeated transmission is configured, the transmission is performed on the time-frequency domain resource position of the cell corresponding to the activated logical channel;

Transmission is performed on the activated first pre-configured resource.

Wherein, the highly reliable transmission mode activation signaling includes a PDCCH order or a HARQ NACK order;

Wherein, in the case that the highly reliable transmission mode activation signaling is a PDCCH order, the designated field of the downlink control information DCI carried in the PDCCH order is a preset value.

Wherein, the processor 1100 is configured to read the computer program in the memory and perform the following operations:

Processing the data packet to be transmitted by using a processing manner corresponding to the second pre-configured resource;

When the terminal does not receive the highly reliable transmission mode activation signaling sent by the network device, the terminal uses the second pre-configured resource to transmit the processed data packet to be transmitted, and discards the corresponding highly reliable transmission mode physical layer transport block;

The configuration information corresponding to the second pre-configured resource is different from the configuration information of the high-reliability transmission mode.

What needs to be explained here is that the above-mentioned device provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect. The part and the beneficial effect are described in detail.

As shown in Figure 12, the data transmission device 1200 of the embodiment of the present application is applied to a terminal, including:

The first processing unit 1201 is configured to preprocess the data packet to be transmitted according to the high-reliability transmission mode configuration information sent by the network device to obtain a physical layer transmission block; the first transmission unit 1202 is configured to receive the transmission block sent by the network device In the case of highly reliable transmission mode activation signaling, the physical layer transmission block is transmitted on resources corresponding to the high reliability transmission mode according to the high reliability transmission mode activation signaling; wherein, the high reliability transmission mode activation signaling is used Instructing the terminal to perform data transmission based on a highly reliable transmission mode.

Wherein, the configuration information of the highly reliable transmission mode includes:

Time-frequency domain resource occupancy information and modulation and coding schemes of uplink resources, where the time-frequency domain resource occupancy information includes time-frequency resource distribution information except for the start position of the time domain.

Wherein, the configuration information also includes one or more of the following:

The first information is used to indicate activation of PDCP repeated transmission when PDCP repeated transmission is configured;

The second information is used to indicate the information of the activatable logical channel and/or the information of the cell corresponding to the activatable logical channel in the case of PDCP repeated transmission when PDCP repeated transmission is configured;

The third information is used to indicate the activation of pre-configured resources;

The fourth information is used to indicate to activate the first preconfigured resource among the multiple preconfigured resources.

Wherein, the first processing unit 1202 is configured to perform preprocessing on the data packet to be transmitted according to the time-frequency domain resource occupancy information and the modulation and coding scheme, so as to obtain the physical layer transmission block.

Wherein, when the terminal receives the highly reliable transmission mode activation signaling sent by the network device, the first transmission unit 1203 includes:

The first determining subunit is configured to determine the time starting point of resources actually occupied by uplink transmission in the high-reliability transmission mode; the first mapping subunit is configured to map the physical layer transport block to the corresponding physical layer transmission block according to the time starting point transmission on physical layer resources.

The first determining subunit is configured to perform any of the following:

Adding a time offset value to the transmission time point of the highly reliable transmission mode activation signaling to obtain the time starting point of actually occupying resources for uplink transmission in the high reliable transmission mode;

The starting time of uplink transmission in the high-reliability transmission mode indicated in the activation signaling of the high-reliability transmission mode is used as the time start of actually occupying resources for uplink transmission in the high-reliability transmission mode.

Wherein, the time offset value is the time offset between the time starting point when the terminal actually occupies resources for uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling; the The time offset value is indicated by one or more of the following methods:

The time offset value is carried in the configuration information of the highly reliable transmission mode;

The time offset value is predefined in the protocol;

The time offset value is carried in the high reliability transmission mode activation signaling.

Wherein, the first mapping subunit is used to point to any of the following:

transmit at the time-frequency domain resource location specified for the current cell;

In the case that PDCP repeated transmission is configured, the transmission is performed on the time-frequency domain resource position of the cell corresponding to the activated logical channel;

Transmission is performed on the activated first pre-configured resource.

Wherein, the highly reliable transmission mode activation signaling includes a Physical Downlink Control Channel PDCCH order or a Hybrid Automatic Repeat Request Negative Acknowledgment HARQ NACK order;

Wherein, in the case that the highly reliable transmission mode activation signaling is a PDCCH order, the designated field of the downlink control information DCI carried in the PDCCH order is a preset value.

Wherein, the apparatus further includes: a second processing unit, configured to process the data packet to be transmitted in a processing manner corresponding to the second pre-configured resource; a third processing unit, configured to In the case of the highly reliable transmission mode activation signaling sent, the terminal uses the second pre-configured resource to transmit the processed data packet to be transmitted, and discards the physical layer transmission block corresponding to the high reliability transmission mode; the second The configuration information corresponding to the pre-configured resources is different from the configuration information of the high-reliability transmission mode.

Wherein, the data packet to be transmitted is a retransmission data packet or a new data packet.

What needs to be explained here is that the above-mentioned device provided by the embodiment of the present application can realize all the method steps realized by the above-mentioned method embodiment, and can achieve the same technical effect. The part and the beneficial effect are described in detail.

As shown in Figure 13, the data transmission device 1300 of the embodiment of the present application is applied to network equipment, including:

The first sending unit 1301 is configured to send high reliability transmission mode configuration information to the terminal; the second sending unit 1302 is configured to send high reliability transmission mode activation signaling to the terminal, wherein the high reliability transmission mode activation signaling It is used to indicate the data transmission based on the high reliability transmission mode.

Wherein, for the meaning of the configuration information of the high-reliability transmission mode, reference may be made to the description of the foregoing embodiments.

Wherein, the device may also include:

The first receiving unit is configured to receive a data packet transmitted by the terminal in a high-reliability transmission mode, where the data packet is a retransmission data packet or a new data packet.

Wherein, the device may also include:

The second sending unit is configured to send a highly reliable transmission mode activation signaling to the terminal when it is determined that an error occurs in the uplink transmission.

It should be noted that the division of units in the embodiment of the present application is schematic, and is only a logical function division, and there may be another division manner in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit. The above-mentioned integrated units can be implemented in the form of hardware or in the form of software functional units.

If the integrated unit is implemented in the form of a software function unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or part of the contribution to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium , including several instructions to make a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other various media that can store program codes. .

The embodiment of the present application also provides a readable storage medium, on which a program is stored, and when the program is executed by a processor, each process of the above-mentioned data transmission method embodiment can be achieved, and the same technical effect can be achieved. Repeat, no more details here. Wherein, the readable storage medium can be any available medium or data storage device that can be accessed by the processor, including but not limited to magnetic storage (such as floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (such as CD, DVD, BD, HVD, etc.), and semiconductor memory (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid state hard drive (SSD)), etc.

It should be noted that, in this document, the term "comprising", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article or apparatus comprising a set of elements includes not only those elements, It also includes other elements not expressly listed, or elements inherent in the process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising that element.

Through the description of the above embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus a necessary general-purpose hardware platform, and of course also by hardware, but in many cases the former is better implementation. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk, etc.) ) includes several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present application.

The embodiments of the present application have been described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementations. The above-mentioned specific implementations are only illustrative and not restrictive. Those of ordinary skill in the art will Under the inspiration of this application, without departing from the purpose of this application and the scope of protection of the claims, many forms can also be made, all of which belong to the protection of this application.

Claims (35)

1. A method of data transmission, comprising:

the terminal preprocesses a data packet to be transmitted according to the configuration information of the high-reliability transmission mode sent by the network equipment to obtain a physical layer transmission block;

under the condition that the terminal receives a high-reliability transmission mode activation signaling sent by the network equipment, the terminal transmits the physical layer transmission block on a resource corresponding to a high-reliability transmission mode according to the high-reliability transmission mode activation signaling;

the high-reliability transmission mode activation signaling is used for indicating the terminal to transmit data based on a high-reliability transmission mode.

2. The method of claim 1, wherein the high-reliability transmission mode configuration information comprises:

the time-frequency domain resource occupation information of the uplink resource comprises time-frequency resource distribution information except the time domain starting position.

3. The method of claim 2, wherein the configuration information further comprises one or more of:

first information for indicating activation of a packet data convergence protocol, PDCP, repeat transmission in a case where the PDCP repeat transmission is configured;

second information, configured to indicate, when PDCP duplicate transmission is configured, information of an activatable logical channel and/or information of a cell corresponding to the activatable logical channel when PDCP duplicate transmission is performed;

third information indicating activation of the pre-configured resource;

fourth information indicating activation of a first pre-configured resource of the plurality of pre-configured resources.

4. The method of claim 2, wherein the terminal performs preprocessing on the data packet to be transmitted according to the configuration information to obtain a physical layer transport block, and the method comprises:

and the terminal preprocesses the data packet to be transmitted according to the time-frequency domain resource occupation information and the modulation coding mode to obtain the physical layer transmission block.

5. The method according to claim 1, wherein, when the terminal receives a high-reliability transmission mode activation signaling sent by the network device, the terminal transmits the physical layer transport block on a resource corresponding to a high-reliability transmission mode according to the high-reliability transmission mode activation signaling, and the method includes:

the terminal determines a time starting point of actually occupying resources for uplink transmission in a high-reliability transmission mode;

and the terminal maps the physical layer transmission block to a corresponding physical layer resource for transmission according to the time starting point.

6. The method according to claim 5, wherein the terminal determines a time starting point of actually occupying resources for uplink transmission in the high-reliability transmission mode, and comprises any one of the following steps:

the terminal adds a time offset value to the transmission time point of the high-reliability transmission mode activation signaling to obtain a time starting point of actually occupying resources by performing uplink transmission in the high-reliability transmission mode;

and the terminal takes the time starting point position of uplink transmission in the high-reliability transmission mode indicated in the high-reliability transmission mode activation signaling as the time starting point of actually occupying resources by uplink transmission in the high-reliability transmission mode.

7. The method according to claim 6, wherein the time offset value is a time offset between a time starting point when the terminal actually occupies resources for uplink transmission in the high-reliability transmission mode and a transmission time point of the high-reliability transmission mode activation signaling; the time offset value is indicated by one or more of:

the time offset value is carried in the high-reliability transmission mode configuration information;

the time offset value is predefined in a protocol;

the time offset value is carried in the high reliable transmission mode activation signaling.

8. The method according to claim 5, wherein the terminal maps the physical layer transport blocks onto corresponding physical layer resources for transmission according to the time starting point, and the method comprises any one of the following steps:

transmitting at a time-frequency domain resource location specified for a current cell;

transmitting on the time-frequency domain resource position of the cell corresponding to the activated logical channel under the condition that the PDCP repeated transmission is configured;

transmitting on the activated first pre-configured resource.

9. The method according to claim 1, wherein the high-reliability transmission mode activation signaling comprises a Physical Downlink Control Channel (PDCCH) order or a hybrid automatic repeat request negative acknowledgement (HARQ NACK) order;

and when the high-reliability transmission mode activation signaling is a PDCCH (physical Downlink control channel) command, the designated domain of the DCI carried by the PDCCH command is a preset value.

10. The method according to claim 1, wherein after the terminal receives the configuration information of the high-reliability transmission mode sent by the network device, the method further comprises:

the terminal processes the data packet to be transmitted by utilizing a processing mode corresponding to a second pre-configured resource;

after the terminal preprocesses the data packet to be transmitted according to the configuration information of the high-reliability transmission mode sent by the network device to obtain the physical layer transmission block, the method further comprises the following steps:

under the condition that the terminal does not receive a high-reliability transmission mode activation signaling sent by the network equipment, the terminal transmits the processed data packet to be transmitted by using the second preconfigured resource and discards a physical layer transmission block corresponding to the high-reliability transmission mode;

and the configuration information corresponding to the second pre-configuration resource is different from the configuration information of the high-reliability transmission mode.

11. The method of claim 1, wherein the data packet to be transmitted is a retransmission data packet or a new data packet.

12. A method of data transmission, comprising:

the network equipment sends high-reliability transmission mode configuration information to the terminal;

and the network equipment sends a high-reliability transmission mode activation signaling to the terminal, wherein the high-reliability transmission mode activation signaling is used for indicating the data transmission based on the high-reliability transmission mode.

13. The method of claim 12, wherein the high-reliability transmission mode configuration information comprises:

the time-frequency domain resource occupation information of the uplink resource comprises time-frequency resource distribution information except the time domain starting position.

14. The method of claim 13, wherein the high-reliability transmission mode configuration information further comprises:

and the time offset value is the time offset between the time starting point of actually occupying resources by the terminal in uplink transmission in the high-reliability transmission mode and the transmission time point of the high-reliability transmission mode activation signaling.

15. The method of claim 13 or 14, wherein the configuration information further comprises one or more of:

first information for indicating activation of PDCP duplicate transmission, in case PDCP duplicate transmission is configured;

second information, configured to indicate, when PDCP duplicate transmission is configured, information of a logical channel that can be activated and/or a cell corresponding to the activated logical channel when PDCP duplicate transmission is performed;

third information indicating activation of the pre-configured resource;

fourth information for indicating activation of a first pre-configured resource of the plurality of pre-configured resources.

16. The method according to claim 12, wherein the high reliability transmission mode activation signaling includes a time offset value, and the time offset value is a time offset between a starting time point of a resource actually occupied by the terminal for uplink transmission in the high reliability transmission mode and a transmission time point of the high reliability transmission mode activation signaling.

17. The method according to claim 12, wherein the high reliable transmission mode activation signaling comprises a PDCCH order or a HARQ NACK order;

and when the high-reliability transmission mode activation signaling is a PDCCH order, the designated domain of the DCI carried by the PDCCH order is a preset value.

18. The method of claim 12, further comprising:

and the network equipment receives a data packet transmitted by the terminal in a high-reliability transmission mode, wherein the data packet is a retransmission data packet or a new data packet.

19. The method of claim 12, wherein the network device sends the high-reliability transmission mode activation signaling to the terminal, and wherein the method comprises:

and under the condition that the uplink transmission is determined to have errors, the network equipment sends a high-reliability transmission mode activation signaling to the terminal.

20. A data transmission apparatus for a terminal, comprising a memory, a transceiver, a processor:

a memory for storing a computer program; a transceiver for transceiving data under the control of the processor; a processor for reading the computer program in the memory and performing the following operations:

preprocessing a data packet to be transmitted according to high-reliability transmission mode configuration information sent by network equipment to obtain a physical layer transmission block;

transmitting the physical layer transmission block on a resource corresponding to a high-reliability transmission mode according to a high-reliability transmission mode activation signaling under the condition of receiving the high-reliability transmission mode activation signaling sent by the network equipment;

the high-reliability transmission mode activation signaling is used for indicating the terminal to transmit data based on a high-reliability transmission mode.

21. The apparatus of claim 20, wherein the high-reliability transmission mode configuration information comprises:

the method comprises time-frequency domain resource occupation information of uplink resources and a modulation coding mode, wherein the time-frequency domain resource occupation information comprises time-frequency resource distribution information except for a time domain starting point position.

22. The apparatus of claim 21, wherein the configuration information further comprises one or more of:

first information for indicating activation of a packet data convergence protocol, PDCP, repeat transmission in a case where the PDCP repeat transmission is configured;

second information, configured to indicate, when PDCP duplicate transmission is configured, information of an activatable logical channel and/or information of a cell corresponding to the activatable logical channel when PDCP duplicate transmission is performed;

third information indicating activation of the pre-configured resource;

fourth information indicating activation of a first pre-configured resource of the plurality of pre-configured resources.

23. The apparatus of claim 21, wherein the processor is configured to read the computer program in the memory and perform the following:

and preprocessing the data packet to be transmitted according to the time-frequency domain resource occupation information and the modulation coding mode to obtain the physical layer transmission block.

24. The apparatus of claim 20, wherein the processor is configured to read the computer program from the memory and perform the following:

determining a time starting point of actually occupying resources for uplink transmission in a high-reliability transmission mode;

and mapping the physical layer transmission block to a corresponding physical layer resource for transmission according to the time starting point.

25. The apparatus of claim 24, wherein the processor is configured to read the computer program in the memory and perform the following:

adding a time offset value to the transmission time point of the high-reliability transmission mode activation signaling to obtain a time starting point of actually occupying resources for uplink transmission in the high-reliability transmission mode;

and taking the time starting point position of uplink transmission in the high-reliability transmission mode indicated in the high-reliability transmission mode activation signaling as the time starting point of actually occupied resources for uplink transmission in the high-reliability transmission mode.

26. The apparatus according to claim 25, wherein the time offset value is a time offset between a time starting point when uplink transmission is actually performed by the terminal in a high-reliability transmission mode to occupy resources and a transmission time point of the high-reliability transmission mode activation signaling; the time offset value is indicated by one or more of:

the time offset value is carried in the configuration information of the high-reliability transmission mode;

the time offset value is predefined in a protocol;

the time offset value is carried in the high reliable transmission mode activation signaling.

27. The apparatus of claim 24, wherein the processor is configured to read the computer program from the memory and perform the following:

transmitting at a time-frequency domain resource location specified for a current cell;

transmitting on the time-frequency domain resource position of the cell corresponding to the activated logical channel under the condition that the PDCP repeated transmission is configured;

transmitting on the activated first pre-configured resource.

28. The apparatus of claim 20, wherein the high-reliability transmission mode activation signaling comprises a PDCCH order or a HARQ NACK order;

and when the high-reliability transmission mode activation signaling is a PDCCH (physical Downlink control channel) command, the designated domain of the DCI carried by the PDCCH command is a preset value.

29. The apparatus of claim 20, wherein the processor is configured to read the computer program in the memory and perform the following:

processing the data packet to be transmitted by utilizing a processing mode corresponding to a second pre-configured resource;

under the condition that the terminal does not receive a high-reliability transmission mode activation signaling sent by the network equipment, the terminal transmits the processed data packet to be transmitted by using the second preconfigured resource and discards a physical layer transmission block corresponding to a high-reliability transmission mode;

and the configuration information corresponding to the second pre-configuration resource is different from the configuration information of the high-reliability transmission mode.

30. A data transmission device applied to network equipment is characterized by comprising a memory, a transceiver and a processor:

a memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

sending high-reliability transmission mode configuration information to a terminal;

and sending a high-reliability transmission mode activation signaling to the terminal, wherein the high-reliability transmission mode activation signaling is used for indicating the data transmission based on the high-reliability transmission mode.

31. The apparatus of claim 30, wherein the processor is configured to read the computer program from the memory and perform the following:

and receiving a data packet transmitted by the terminal in a high-reliability transmission mode, wherein the data packet is a retransmission data packet or a new data packet.

32. The apparatus of claim 30, wherein the processor is configured to read the computer program in the memory and perform the following:

and sending a high-reliability transmission mode activation signaling to the terminal under the condition of determining that the uplink transmission is wrong.

33. A data transmission device applied to a terminal is characterized by comprising:

the first processing unit is used for preprocessing a data packet to be transmitted according to the high-reliability transmission mode configuration information sent by the network equipment to obtain a physical layer transmission block;

a first transmission unit, configured to transmit the physical layer transport block on a resource corresponding to a high-reliability transmission mode according to a high-reliability transmission mode activation signaling sent by the network device when the high-reliability transmission mode activation signaling is received;

the high-reliability transmission mode activation signaling is used for indicating the terminal to transmit data based on a high-reliability transmission mode.

34. A data transmission device applied to network equipment is characterized by comprising:

a first sending unit, configured to send highly reliable transmission mode configuration information to a terminal;

a second sending unit, configured to send a high-reliability transmission mode activation signaling to the terminal, where the high-reliability transmission mode activation signaling is used to indicate that data transmission is performed based on a high-reliability transmission mode.

35. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing a processor to perform the method of any one of claims 1 to 19.

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