CN113966637A

CN113966637A - Data transmission method and related equipment

Info

Publication number: CN113966637A
Application number: CN201980097166.0A
Authority: CN
Inventors: 何朗; 彭振敬; 陈冬明; 杜婷
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2022-01-21
Also published as: WO2021035541A1

Abstract

The embodiment of the application provides a data transmission method and related equipment, and the method comprises the following steps: the method comprises the steps that network equipment receives a Physical Uplink Shared Channel (PUSCH) sent by terminal equipment on a first pre-allocated time-frequency resource; and sending first Downlink Control Information (DCI) and resource scheduling information to the terminal equipment, wherein the first DCI is used for indicating whether the PUSCH is successfully demodulated, and the resource scheduling information is used for the terminal equipment to schedule a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated or schedule the second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to demodulate.

Description

Data transmission method and related equipment

Technical Field

The present application relates to the field of network technologies, and in particular, to a data transmission method and a related device.

Background

With the rapid development of wireless communication technology, wireless communication adaptation services are more and more, and the requirement for delay is higher and higher. Many wireless technologies propose non-scheduling techniques in order to save time delay. For example, semi-persistent scheduling of Long Term Evolution (LTE), grant free of the fifth Generation mobile communication technology (5-Generation, 5G), long range wireless transmission scheme (LoRa), discrete carrier aggregation (DSA), and the like all employ the no-scheduling technology. However, this technique has low utilization rate of network resources, and resources of different terminal equipments (UEs) are prone to collision, resulting in data transmission failure.

Disclosure of Invention

The application provides a data transmission method and related equipment, which improve the utilization rate of network resources and improve the success rate of data transmission.

In a first aspect, an embodiment of the present application provides a data transmission method, including: the method comprises the steps that network equipment receives a Physical Uplink Shared Channel (PUSCH) sent by terminal equipment on a first pre-allocated time-frequency resource; and sending first downlink control information DCI and resource scheduling information to the terminal equipment, wherein the first DCI is used for indicating whether the PUSCH is successfully demodulated, and the resource scheduling information is used for scheduling the second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated by the terminal equipment or scheduling the second time-frequency resource to retransmit the PUSCH when the PUSCH is unsuccessfully demodulated. The PUSCH is sent on the pre-allocated time-frequency resource through the terminal equipment, a non-scheduling mode is adopted, the data transmission delay is reduced, and the network equipment adopts the PDCCH to perform HARQ feedback, so that the transmission delay is not increased. In addition, the HARQ feedback is carried out, meanwhile, the resource scheduling information of the next data transmission is indicated, and a scheduling mode is adopted, so that the probability of uplink resource collision is reduced, and the utilization rate of resources is improved.

In a possible design, the network device may allocate the first time-frequency resource to the terminal device according to a service type of the terminal device, so that the terminal device may transmit a physical uplink shared channel PUSCH on the first time-frequency resource allocated in advance, thereby reducing transmission delay.

In another possible design, the first DCI includes first indication information indicating that resource scheduling information is used to schedule the second time-frequency resource to transmit at least one data packet or retransmit the PUSCH.

In another possible design, the first indication information indicates NDI for the new data, and NDI is one bit.

In another possible design, the network device receives at least one data packet sent by the terminal device, where a tail packet in the at least one data packet includes an indication value of a target field of a protocol data unit PDU, and the indication value of the target field is used to indicate the network device to determine whether each data packet is successfully received and generate a status report; and sending a second DCI to the terminal equipment, wherein the second DCI comprises a status report. The tail packet carries the indicated value of the target field of the PDU, so that the terminal equipment does not need to send a Polling packet, and the signaling overhead is saved. And the DCI feeds back the status report, thereby reducing the resource overhead, reducing the time delay and improving the network cell rate.

In another possible design, the second DCI further includes acknowledgement information indicating whether the tail packet is successfully demodulated. And whether the tail packet is successfully demodulated is fed back through the DCI, so that the resource overhead is reduced, the time delay is reduced, and the network cell rate is improved.

In another possible design, the second DCI further includes second indication information indicating whether the second DCI contains a status report.

In another possible design, the second indication information is one bit.

In a second aspect, an embodiment of the present application provides a data transmission method, including: the terminal equipment sends a PUSCH to the network equipment on a first time-frequency resource which is allocated in advance; and receiving first downlink control information DCI and resource scheduling information sent by the network equipment, wherein the first DCI is used for indicating whether the PUSCH is successfully demodulated, and the resource scheduling information is used for scheduling the second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated by the terminal equipment or scheduling the second time-frequency resource to retransmit the PUSCH when the PUSCH is unsuccessfully demodulated. The terminal equipment sends the PUSCH on the pre-allocated time-frequency resource, a non-scheduling mode is adopted, the transmission delay is reduced, and the network equipment adopts the PDCCH for HARQ feedback, so that the delay is not increased. In addition, the HARQ feedback is carried out, meanwhile, the resource scheduling information of the next data transmission is indicated, and a scheduling mode is adopted, so that the probability of uplink resource collision is reduced, and the utilization rate of resources is improved.

In another possible design, the terminal device sends at least one data packet to the network device, where a tail packet in the at least one data packet includes an indication value of a target field of a protocol data unit PDU, and the indication value of the target field is used to indicate the network device to determine whether each data packet is successfully received and generate a status report; and receiving second DCI sent by the network equipment, wherein the second DCI comprises a status report. The tail packet carries the indicated value of the target field of the PDU, so that the terminal equipment does not need to send a Polling packet, and the signaling overhead is saved. And the DCI feeds back the status report, thereby reducing the resource overhead, reducing the time delay and improving the network cell rate.

In another possible design, the second indication information is one bit.

In a third aspect, an embodiment of the present application provides a first data transmission apparatus, where the first data transmission apparatus is configured to implement the method and the function performed by the network device in the first aspect, and is implemented by hardware/software, where the hardware/software includes modules corresponding to the functions.

In a fourth aspect, the present embodiment provides a second data transmission apparatus, where the second data transmission apparatus is configured to implement the method and the function performed by the terminal device in the second aspect, and the second data transmission apparatus is implemented by hardware/software, where the hardware/software includes modules corresponding to the functions.

In a fifth aspect, an embodiment of the present application provides a network device, including: a processor, a memory and a communication bus, wherein the communication bus is used for realizing the connection communication between the processor and the memory, and the processor executes the program stored in the memory for realizing the steps of the first aspect.

In one possible design, the network device provided by the present application may include a module corresponding to the behavior of the network device in the design for executing the method described above. The modules may be software and/or hardware.

In a sixth aspect, an embodiment of the present application provides a terminal device, including: the system comprises a processor, a memory and a communication bus, wherein the communication bus is used for realizing connection communication between the processor and the memory, and the processor executes a program stored in the memory for realizing the steps provided by the second aspect.

In one possible design, the terminal device provided by the present application may include a module corresponding to the behavior of the terminal device in the design for executing the method described above. The modules may be software and/or hardware.

In a seventh aspect, the present application provides a computer-readable storage medium having stored therein instructions, which when executed on a computer, cause the computer to perform the method of the above-described aspects.

In an eighth aspect, the present application provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the method of the above aspects.

In a ninth aspect, there is provided a chip comprising a processor for calling up and executing instructions stored in a memory from the memory, so that a communication device in which the chip is installed performs the method of any of the above aspects.

In a tenth aspect, an embodiment of the present application further provides another chip, where the chip may be a chip in a network device or a terminal device, and the chip includes: the system comprises an input interface, an output interface and a processing circuit, wherein the input interface, the output interface and the circuit are connected through internal connecting paths, and the processing circuit is used for executing the method of any one aspect.

In an eleventh aspect, there is provided another chip comprising: the input interface, the output interface, the processor, and optionally the memory, are connected via an internal connection path, the processor is configured to execute code in the memory, and when the code is executed, the processor is configured to perform the method in any of the above aspects.

In a twelfth aspect, an apparatus is provided for implementing the method of any of the above aspects.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments or the background art of the present application, the drawings required to be used in the embodiments or the background art of the present application will be described below.

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

fig. 2 is a schematic diagram of a non-scheduling method for random resource selection according to an embodiment of the present application;

fig. 3 is a schematic diagram of a fixed resource non-scheduling method according to an embodiment of the present application;

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

fig. 5 is a schematic structural diagram of a first data transmission apparatus according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of a second data transmission apparatus according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present application;

fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

As shown in fig. 1, fig. 1 is a schematic architecture diagram of a communication system 100 according to an embodiment of the present disclosure. The communication system 100 may include a network device 110 and terminal devices 101 to 106. It should be understood that more or fewer network devices or terminal devices may be included in the communication system 100 to which the methods of the embodiments of the present application may be applied. The network device or the terminal device may be hardware, or may be functionally divided software, or a combination of the two. The network device and the terminal device can communicate through other devices or network elements. In the communication system 100, the network device 110 can transmit downlink data to the terminal devices 101 to 106. Of course, terminal apparatuses 101 to 106 may transmit uplink data to network apparatus 110. Network device 110 may be a base station, an access point, a relay node, a Base Transceiver Station (BTS), a Node B (NB), an evolved node B (eNB), or a 5G base station, and refers to a device in an access network that communicates with wireless terminals over an air interface through one or more sectors. By converting received air-interface frames to IP packets, network device 110 may act as a router between the terminal device and the rest of the access network, which may include an internet protocol network. Network device 110 may also coordinate management of attributes of the air interface. Terminal devices 101-106 may be cellular phones, smart phones, laptops, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, Personal Digital Assistants (PDAs), and/or any other suitable device for communicating over wireless communication system 100, among others. The communication system 100 may employ a Public Land Mobile Network (PLMN), a device-to-device (D2D) network, a machine-to-machine (M2M) network, an internet of things (IoT), or other networks. The terminal devices 104 to 106 may form a communication system. In the communication system, the terminal device 105 may transmit downlink data to the terminal device 104 or the terminal device 106. The method in the embodiment of the present application can be applied to the communication system 100 shown in fig. 1.

The non-scheduling technology comprises the following steps: the UE does not need to send a Scheduling Request (SR) and receive scheduling information of a Physical Downlink Control Channel (PDCCH) sent by the network device, and the UE may directly send data in a pre-allocated time-frequency resource or randomly select the time-frequency resource, and may save SR request delay and PDCCH scheduling delay through a non-scheduling technique. However, since the network device is required to allocate time-frequency resources to the UE in advance, when the UE has no service, resource waste is easily caused, and the utilization rate of network resources is reduced. In addition, in order to improve the utilization rate of network resources, the network device may allocate different UEs to the same resource, so that a new problem is introduced, that is, when different UEs send services at the same time, time-frequency resources of different UEs are likely to collide, resulting in data transmission failure of different UEs. The following mainly introduces a specific application scenario of the non-scheduling technology.

As shown in fig. 2, fig. 2 is a schematic diagram of a non-scheduling method for random resource selection according to an embodiment of the present application, where the method includes, but is not limited to the following steps:

step 1: and when the UE needs to send the uplink data, the UE randomly selects the time-frequency resource and sends the uplink data through a plurality of gateways.

Step 2: after receiving the uplink data sent by the UE, the plurality of gateways directly transmit the uplink data to the network server, and after receiving the uplink data, the network server sends the uplink data to the application server.

And step 3: after receiving the uplink data, the application server selects the gateway with the strongest signal in an Acknowledgement (ACK) information feedback period, and issues acknowledgement information of the uplink data through the selected network manager.

And 4, step 4: and in the ACK feedback period, if the UE does not receive the confirmation information sent by the application server, the uplink data is sent again. And if the confirmation information sent by the application server is received, finishing the data transmission.

The LoRa technology is a most typical random resource selection non-scheduling technology, and is mainly oriented to low time delay of the internet of things. And when the UE needs to send the uplink data, randomly selecting the time-frequency resource and directly sending the uplink data. The UE does not need to send an SR request, the network device does not need to issue scheduling information, and does not need to feed back hybrid automatic repeat request (HARQ) information. Moreover, the LoRa adopts a mode of sending by multiple gateways at the same time, so that the success rate of uplink data transmission is improved. However, when the network load increases, the probability of resource collision in UE data transmission increases, and the success rate of data transmission decreases. In addition, LoRa has no HARQ feedback and retransmission of a Medium Access Control (MAC) layer, and the success rate of air interface data transmission is low. Although the probability of resource collision for UE data transmission can be reduced by increasing network resources or reducing the number of network users, this reduces the utilization of network resources.

As shown in fig. 3, fig. 3 is a schematic diagram of a fixed resource non-scheduling method provided in an embodiment of the present application, where the method includes, but is not limited to, the following steps:

step 1: the network equipment allocates time-frequency resources to the UE, which are used for non-scheduled data transmission.

Step 2: when the UE needs to send uplink data, the UE sends a Physical Uplink Shared Channel (PUSCH) on a pre-allocated time-frequency resource.

And step 3: after receiving the PUSCH transmitted by the UE, the network device transmits Downlink Control Information (DCI) to the UE, where the DCI includes ACK/NACK, and if the DCI indicates ACK, it indicates that the network device successfully demodulates the PUSCH, and if the DCI indicates NACK, it indicates that the network device fails to demodulate the PUSCH, and the UE needs to retransmit the PUSCH.

And 4, step 4: after the UE receives the DCI, if the DCI indicates ACK, the UE may transmit a data packet on a pre-allocated time-frequency resource. If the DCI indicates NACK, the UE needs to retransmit the PUSCH using pre-allocated time-frequency resources.

And 5: and if the network equipment is determined to be successfully demodulated into the PUSCH, the UE starts to send the data packet on the PUSCH. And after sending the tail packet in the completion data packet, sending a Polling packet, wherein the Polling packet is used for indicating the network equipment to determine whether each data packet is received and generating a status report.

Step 6: after receiving the Polling packet sent by the UE, the network device transfers the received data packet to the RLC layer, and the RLC layer determines whether each data packet is received and generates a status report.

And 7: the network equipment sends a status report to the UE, wherein the status report is used for informing the UE whether the data packet is successfully received. The feedback mode of the status report is a downlink data transmission mode, and the status report is transmitted on the PDSCH.

The semi-static scheduling of LTE, the Grant free technology of 5G and the non-scheduling technology of DSA are fixed resource non-scheduling technologies. The network equipment allocates time-frequency resources with fixed period and fixed size to the UE in advance. And when the UE needs to send uplink data, directly sending the PUSCH and the data packet. Different UE of the fixed resource non-scheduling technology allocates different non-scheduling resources, which results in low utilization rate of network resources. Resource utilization rate can be improved by allocating different users to the same resource, but when network load increases, different users send uplink data on the same resource, so that resource collision easily occurs, and data transmission fails.

Both of the above two embodiments are data transmission methods without a scheduling mechanism, but both of the two methods have the problems that the utilization rate of network resources is low, and resources of different terminal devices (UEs) are easy to collide, resulting in data transmission failure. The following introduces a data transmission method for authorized scheduling, including:

step 1: when UE needs to send uplink data, an SR request is sent to network equipment;

step 2: and the network equipment sends DCI to the UE, wherein the DCI is used for indicating information such as time-frequency resources and the like allocated to the UE.

And step 3: and the UE sends the PUSCH on the allocated time-frequency resources.

And 4, step 4: after receiving the PUSCH transmitted by the UE, the network device transmits Downlink Control Information (DCI) to the UE, where the DCI includes ACK/NACK, and if the DCI indicates ACK, it indicates that the network device successfully demodulates the PUSCH, and if the DCI indicates NACK, it indicates that the network device fails to demodulate the PUSCH, and the UE needs to retransmit the PUSCH.

And 5: after receiving the DCI, if the DCI indicates ACK, the UE may send a data packet on the allocated time-frequency resource. If the DCI indicates NACK, the UE needs to retransmit the SR request and retransmit the PUSCH on the reallocated time-frequency resources.

Step 6: and if the network equipment is determined to successfully demodulate the PUSCH, the UE starts to send the data packet. And after sending the tail packet in the completion data packet, sending a Polling packet, wherein the Polling packet is used for indicating the network equipment to determine whether each data packet is received and generating a status report.

And 7: after receiving the Polling packet sent by the UE, the network device transfers the received data packet to the RLC layer, and the RLC layer determines whether each data packet is received and generates a status report.

And 8: the network equipment sends a status report to the UE, wherein the status report is used for informing the UE whether the data packet is successfully received. The feedback mode of the status report is a downlink data transmission mode, and the status report is transmitted on the PDSCH.

For the data transmission mode of authorized scheduling, the network equipment allocates time-frequency resources to the UE only when the UE needs to send uplink data, so that resource waste can be avoided, and the problem of resource collision does not occur. And after the UE sends the tail packet, it needs to send a Polling packet to request the network device to issue a status report, which consumes network resources.

In order to solve the above technical problem, embodiments of the present application provide the following solutions.

As shown in fig. 4, fig. 4 is a schematic flowchart of a data transmission method provided in an embodiment of the present application. The steps in the embodiments of the present application include at least:

s401, the terminal device sends PUSCH to the network device on the first pre-allocated time-frequency resource, and the network device receives the PUSCH sent by the terminal device on the first pre-allocated time-frequency resource. After receiving the PUSCH, the network device may receive and demodulate the data packet sent by the terminal device on the PUSCH.

Optionally, before the terminal device sends the PUSCH to the network device on the first time-frequency resource allocated in advance, the network device may allocate the first time-frequency resource to the terminal device according to the service type of the terminal device. For terminal devices of different service types, the network device may allocate different time-frequency resources.

S402, the network device sends first downlink control information DCI and resource scheduling information to the terminal device, the first DCI is used for indicating whether the PUSCH is successfully demodulated, and the resource scheduling information is used for the terminal device to schedule a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated or schedule the second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to be demodulated.

In a specific implementation, after receiving the PUSCH, the network device may perform HARQ feedback on a PDCCH channel, and send the first DCI and the resource scheduling information, where the first DCI includes first indication information, and the first indication information is used to indicate that the resource scheduling information is used to schedule the second time-frequency resource to transmit the at least one data packet or retransmit the PUSCH. The resource scheduling information is used for indicating the time-frequency resource of the next data transmission scheduling of the terminal equipment.

Further, when the first DCI indicates ACK, it indicates that the network device successfully demodulates PUSCH, and the resource scheduling information is used to schedule the second time-frequency resource to transmit the at least one data packet, and S403 is executed. And when the first DCI indicates NACK, indicating that the network equipment fails to demodulate the PUSCH and needing to indicate the terminal equipment to resend the PUSCH, wherein the resource scheduling information is used for scheduling the second time-frequency resource to resend the PUSCH. The first indication information is a New Data Indicator (NDI), and the NDI is a bit. For example, when the bit is "1", indicating that the demodulation of PUSCH is successful, the terminal device is instructed to schedule the second time-frequency resource to transmit at least one data packet. And when the bit is '0', indicating that the PUSCH demodulation is failed, and indicating the terminal equipment to schedule the second time-frequency resource to retransmit the PUSCH.

And S403, the terminal equipment sends at least one data packet on the second time-frequency resource according to the resource scheduling information, and the network equipment receives the at least one data packet sent by the terminal equipment.

Wherein a trailer packet of the at least one data packet includes an indication value of a target field of a Protocol Data Unit (PDU), and the indication value of the target field is used to indicate that the network device determines whether each data packet is successfully received and generates a status report. For example, the "P" position of the PDU of the Radio Link Control (RLC) layer in the tail packet may be modified to "1". Therefore, the terminal equipment does not need to send the Polling packet, and the signaling overhead is saved. After receiving the end packet sent by the terminal device, the network device first transmits the data packet to an upper layer (e.g., RLC layer), and the RLC layer of the network device determines that the "P" position of the PDU is "1", confirms each data packet and generates a status report, and feeds back the status report to a Media Access Control (MAC) layer of the network device. And finally, sending a second DCI through the MAC, wherein the second DCI comprises a status report.

S404, the network device sends a second DCI to the terminal device, and the terminal device receives the second DCI sent by the network device, wherein the second DCI comprises a status report.

Optionally, the MAC layer of the network device may place acknowledgement information of the trailer in an indicator bit of a New Data Indicator (NDI) in the second DCI, where the second DCI further includes the acknowledgement information, and the acknowledgement information is used to indicate whether the trailer is successfully demodulated. The acknowledgement information may be "0" (NACK) or "1" (ACK), and if the fed back acknowledgement information is ACK, it indicates that the tail packet demodulation is successful. After the terminal equipment receives the second DCI, if the terminal equipment determines that the tail packet demodulation is successful and each data packet is successfully received, the data transmission is finished. If it is determined that the tail packet demodulation fails or that a certain data packet reception fails, the terminal device may retransmit the corresponding data packet.

Optionally, the second DCI further includes second indication information, where the second indication information is used to indicate whether the second DCI includes the status report. For example, the second indication information is a bit, such as "0" or "1", where "0" may indicate that the second DCI includes scheduling information for data transmission, and "1" indicates that the second DCI includes a status report, and the contents indicated by "0" and "1" may also be interchanged, which is not limited herein. In addition, the remaining bits in the second DCI may be used to indicate a status report, i.e., each bit represents whether each data packet is successfully received, e.g., "0" indicates successful reception of the data packet, and "1" indicates failed reception of the data packet.

In the embodiment of the application, the terminal equipment sends the PUSCH on the pre-allocated time-frequency resource, a non-scheduling mode is adopted, the data transmission delay is reduced, and the network equipment adopts the PDCCH for HARQ feedback, so that the delay is not increased. In addition, the HARQ feedback is carried out, meanwhile, the resource scheduling information of the next data transmission is indicated, and a scheduling mode is adopted, so that the probability of uplink resource collision is reduced, and the utilization rate of resources is improved. In addition, Adaptive Modulation and Coding (AMC) adjustment can be performed on the resource scheduling information in real time, and the AMC adjustment duration and Radio Resource Control (RRC) signaling overhead can be reduced.

The method of the embodiments of the present application is set forth above in detail and the apparatus of the embodiments of the present application is provided below.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a first data transmission apparatus according to an embodiment of the present disclosure, where the first data transmission apparatus may include a receiving module 501 and a sending module 502, where each module is described in detail as follows.

A receiving module 501, configured to receive a physical uplink shared channel PUSCH sent by a terminal device on a first pre-allocated time-frequency resource;

a sending module 502, configured to send first downlink control information DCI and resource scheduling information to the terminal device, where the first DCI is used to indicate whether the PUSCH is successfully demodulated, and the resource scheduling information is used to schedule, by the terminal device, a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated, or schedule, by the terminal device, a second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to be demodulated.

Optionally, the sending module 502 is further configured to allocate the first time-frequency resource to the terminal device according to the service type of the terminal device.

Wherein the first DCI comprises first indication information, and the first indication information is used for indicating that the resource scheduling information is used for scheduling the second time-frequency resource to transmit the at least one data packet or retransmitting the PUSCH.

The first indication information is a new data indication NDI, and the NDI is a bit.

Optionally, the receiving module 501 is further configured to receive the at least one data packet sent by the terminal device, where a tail packet in the at least one data packet includes an indication value of a target field of a protocol data unit PDU, and the indication value of the target field is used to indicate that the network device determines whether each data packet is successfully received and generates a status report; a sending module 502, configured to send a second DCI to the terminal device, where the second DCI includes the status report.

Wherein the second DCI further includes acknowledgement information, and the acknowledgement information is used to indicate whether the tail packet is successfully demodulated.

Wherein the second DCI further includes second indication information, and the second indication information is used to indicate whether the second DCI includes the status report.

Wherein the second indication information is one bit.

It should be noted that the implementation of each module may also correspond to the corresponding description of the method embodiment shown in fig. 4, and perform the method and functions performed by the network device in the foregoing embodiments.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a second data transmission apparatus according to an embodiment of the present disclosure, where the second data transmission apparatus may include a sending module 601 and a receiving module 602, where details of the modules are described below.

A sending module 601, configured to send a PUSCH to a network device on a first pre-allocated time-frequency resource;

a receiving module 602, configured to receive first downlink control information DCI and resource scheduling information sent by the network device, where the first DCI is used to indicate whether the PUSCH is successfully demodulated, and the resource scheduling information is used to schedule, by the terminal device, a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated, or schedule, by the terminal device, a second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to be demodulated.

Optionally, the sending module 601 is further configured to send the at least one data packet to the network device, where a tail packet in the at least one data packet includes an indication value of a target field of a protocol data unit PDU, and the indication value of the target field is used to indicate that the network device determines whether each data packet is successfully received and generates a status report; a receiving module 602, further configured to receive a second DCI sent by the network device, where the second DCI includes the status report.

Wherein the second indication information is one bit.

It should be noted that, the implementation of each module may also correspond to the corresponding description of the method embodiment shown in fig. 4, and execute the method and the function executed by the terminal device in the foregoing embodiment.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a network device according to an embodiment of the present disclosure. As shown in fig. 7, the network device may include: at least one processor 701, at least one communication interface 702, at least one memory 703 and at least one communication bus 704.

The processor 701 may be, among other things, a central processing unit, a general purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic device, transistor logic, a hardware component, or any combination thereof. Which may implement or perform the various illustrative logical blocks, modules, and circuits described in connection with the disclosure. The processor may also be a combination of computing functions, e.g., comprising one or more microprocessors, a digital signal processor and a microprocessor, or the like. The communication bus 704 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 7, but this is not intended to represent only one bus or type of bus. A communication bus 704 is used to enable communications among the components. In this embodiment, the communication interface 702 of the device in this application is used for performing signaling or data communication with other node devices. The memory 703 may include a volatile memory such as a nonvolatile dynamic random access memory (NVRAM), a phase change random access memory (PRAM), a Magnetoresistive Random Access Memory (MRAM), and the like, and may further include a nonvolatile memory such as at least one magnetic disk memory device, an electrically erasable programmable read-only memory (EEPROM), a flash memory device such as a NOR flash memory (NOR flash memory) or a NAND flash memory (EEPROM), a semiconductor device such as a Solid State Disk (SSD), and the like. The memory 703 may optionally be at least one memory device located remotely from the processor 701. A set of program codes may optionally be stored in the memory 703 and the processor 701 may optionally execute the program executed in the memory 703.

Receiving a Physical Uplink Shared Channel (PUSCH) sent by terminal equipment on a first pre-allocated time-frequency resource;

and sending first Downlink Control Information (DCI) and resource scheduling information to the terminal equipment, wherein the first DCI is used for indicating whether the PUSCH is successfully demodulated, and the resource scheduling information is used for scheduling a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated or scheduling the second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to be demodulated by the terminal equipment.

Wherein, the processor 701 is further configured to perform the following operations:

and allocating the first time-frequency resource to the terminal equipment according to the service type of the terminal equipment.

receiving the at least one data packet sent by the terminal device, wherein a tail packet in the at least one data packet comprises an indication value of a target field of a Protocol Data Unit (PDU), and the indication value of the target field is used for indicating the network device to determine whether each data packet is successfully received and generate a status report;

and sending second DCI to the terminal equipment, wherein the second DCI comprises the status report.

Wherein the second indication information is one bit.

Further, the processor may cooperate with the memory and the communication interface to perform the operations of the network device in the embodiments of the above application.

Please refer to fig. 8, fig. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present disclosure. As shown, the terminal device may include: at least one processor 801, at least one communication interface 802, at least one memory 803, and at least one communication bus 804.

The processor 801 may be, among other things, various types of processors as previously mentioned. The communication bus 804 may be a peripheral component interconnect standard PCI bus or an extended industry standard architecture EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 8, but this is not intended to represent only one bus or type of bus. A communication bus 804 is used to enable communications among the components. In this embodiment, the communication interface 802 of the device in this application is used for performing signaling or data communication with other node devices. The memory 803 may be various types of memory as previously mentioned. The memory 803 may optionally be at least one memory device located remotely from the processor 801 as previously described. A set of program codes is stored in the memory 803, and the processor 801 executes a program executed by the OAM described above in the memory 803.

Sending a PUSCH to network equipment on a first pre-allocated time-frequency resource;

and receiving first Downlink Control Information (DCI) and resource scheduling information sent by the network equipment, wherein the first DCI is used for indicating whether the PUSCH is successfully demodulated, and the resource scheduling information is used for scheduling a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated by the terminal equipment or scheduling the second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to be demodulated by the terminal equipment.

Wherein, the processor 801 is further configured to perform the following operations:

transmitting the at least one data packet to the network device, wherein a tail packet of the at least one data packet comprises an indication value of a target field of a Protocol Data Unit (PDU), and the indication value of the target field is used for indicating the network device to determine whether each data packet is successfully received and generate a status report;

receiving second DCI sent by the network device, wherein the second DCI comprises the status report.

Wherein the second indication information is one bit.

Further, the processor may cooperate with the memory and the communication interface to perform the operations of the terminal device in the embodiments of the above application.

The present application further provides a chip system, where the chip system includes a processor, and is configured to support a network device or a terminal device to implement the functions involved in any of the foregoing embodiments, such as generating or processing data and/or information involved in the foregoing methods. In one possible design, the system-on-chip may further include a memory for program instructions and data necessary for a network device or a terminal device. The chip system may be constituted by a chip, or may include a chip and other discrete devices.

Embodiments of the present application further provide a processor, coupled to the memory, for performing any of the methods and functions related to the network device or the terminal device in any of the foregoing embodiments.

Embodiments of the present application further provide a computer program product containing instructions, which when executed on a computer, cause the computer to perform any method and function related to a network device or a terminal device in any of the above embodiments.

The embodiments of the present application further provide an apparatus, configured to perform any method and function related to a network device or a terminal device in any of the foregoing embodiments.

An embodiment of the present application further provides a wireless communication system, where the system includes at least one multi-network device and at least one terminal device involved in any of the above embodiments.

In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed on a computer, cause the processes or functions described in accordance with the embodiments of the application to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, from one website site, computer, server, or data center to another website site, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.

The above-mentioned embodiments further explain the objects, technical solutions and advantages of the present application in detail. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

A method of data transmission, the method comprising:

the method comprises the steps that network equipment receives a Physical Uplink Shared Channel (PUSCH) sent by terminal equipment on a first pre-allocated time-frequency resource;

the network equipment sends first downlink control information DCI and resource scheduling information to the terminal equipment, the first DCI is used for indicating whether the PUSCH is successfully demodulated, and the resource scheduling information is used for the terminal equipment to schedule a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated or schedule the second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to demodulate.
The method of claim 1, wherein the network device receives a Physical Uplink Shared Channel (PUSCH) transmitted by a terminal device on a first pre-allocated time-frequency resource, and further comprises:

and the network equipment allocates the first time-frequency resource to the terminal equipment according to the service type of the terminal equipment.
The method of claim 1 or 2, wherein the first DCI comprises first indication information indicating that the resource scheduling information is used to schedule the second time-frequency resource to transmit the at least one data packet or to retransmit the PUSCH.
The method of claim 3, wherein the first indication information is a New Data Indication (NDI), and wherein the NDI is one bit.
The method according to any of claims 1-4, wherein after the network device sends the downlink control information DCI and the resource scheduling information to the terminal device, further comprising:

the network equipment receives the at least one data packet sent by the terminal equipment, wherein a tail packet in the at least one data packet comprises an indication value of a target field of a Protocol Data Unit (PDU), and the indication value of the target field is used for indicating the network equipment to determine whether each data packet is successfully received and generate a status report;

and the network equipment sends second DCI to the terminal equipment, wherein the second DCI comprises the status report.
The method of claim 5, wherein the second DCI further comprises acknowledgement information indicating whether the tail packet was successfully demodulated.
The method of any of claims 5 or 6, wherein the second DCI further comprises second indication information indicating whether the second DCI contains the status report.
The method of claim 7, wherein the second indication information is one bit.
A method of data transmission, the method comprising:

the terminal equipment sends a PUSCH to the network equipment on a first time-frequency resource which is allocated in advance;

the terminal equipment receives first downlink control information DCI and resource scheduling information sent by the network equipment, wherein the first DCI is used for indicating whether the PUSCH is successfully demodulated, and the resource scheduling information is used for scheduling a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated or scheduling the second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to demodulate.
The method of claim 9, wherein the first DCI comprises first indication information indicating that the resource scheduling information is used to schedule the second time-frequency resource to transmit the at least one data packet or to retransmit the PUSCH.
The method of claim 10, wherein the first indication information is a New Data Indication (NDI), and wherein the NDI is one bit.
The method according to any of claims 9-11, wherein after the terminal device receives the first downlink control information DCI and the resource scheduling information transmitted by the network device, further comprising:

the terminal device sends the at least one data packet to the network device, wherein a tail packet in the at least one data packet comprises an indication value of a target field of a Protocol Data Unit (PDU), and the indication value of the target field is used for indicating the network device to determine whether each data packet is successfully received and generate a status report;

and the terminal equipment receives second DCI sent by the network equipment, wherein the second DCI comprises the status report.
The method of claim 12, wherein the second DCI further comprises acknowledgement information indicating whether the tail packet was successfully demodulated.
The method of any of claims 12 or 13, wherein the second DCI further comprises second indication information indicating whether the second DCI contains the status report.
The method of claim 14, wherein the second indication information is one bit.
A first data transmission apparatus, the apparatus comprising:

the terminal equipment comprises a receiving module, a sending module and a receiving module, wherein the receiving module is used for receiving a Physical Uplink Shared Channel (PUSCH) sent by the terminal equipment on a first pre-allocated time-frequency resource;

and the sending module is used for sending first downlink control information DCI and resource scheduling information to the terminal equipment, wherein the first DCI is used for indicating whether the PUSCH is successfully demodulated, and the resource scheduling information is used for scheduling a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated or scheduling the second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to be demodulated.
The apparatus of claim 16,

the sending module is further configured to allocate the first time-frequency resource to the terminal device according to the service type of the terminal device.
The apparatus of claim 16 or 17, wherein the first DCI comprises first indication information indicating that the resource scheduling information is used to schedule the second time-frequency resource to transmit the at least one data packet or to retransmit the PUSCH.
The apparatus of claim 18, wherein the first indication information is a New Data Indication (NDI), the NDI being one bit.
The apparatus of any one of claims 16-19,

the receiving module is further configured to receive the at least one data packet sent by the terminal device, where a tail packet in the at least one data packet includes an indication value of a target field of a protocol data unit, PDU, and the indication value of the target field is used to indicate the network device to determine whether each data packet is successfully received and generate a status report;

the sending module is further configured to send a second DCI to the terminal device, where the second DCI includes the status report.
The apparatus of claim 20, wherein the second DCI further comprises acknowledgement information indicating whether the tail packet was successfully demodulated.
The apparatus of any one of claims 20 or 21, wherein the second DCI further comprises second indication information indicating whether the second DCI contains the status report.
The method of claim 22, wherein the second indication information is one bit.
A second data transmission apparatus, comprising:

a sending module, configured to send a PUSCH to a network device on a first pre-allocated time-frequency resource;

a receiving module, configured to receive first downlink control information DCI and resource scheduling information sent by the network device, where the first DCI is used to indicate whether the PUSCH is successfully demodulated, and the resource scheduling information is used for the terminal device to schedule a second time-frequency resource to transmit at least one data packet when the PUSCH is successfully demodulated, or to schedule the second time-frequency resource to retransmit the PUSCH when the PUSCH is failed to be demodulated.
The apparatus of claim 24, wherein the first DCI comprises first indication information indicating that the resource scheduling information is used to schedule the second time-frequency resource to transmit the at least one data packet or to retransmit the PUSCH.
The apparatus of claim 25, wherein the first indication information is a New Data Indication (NDI), the NDI being one bit.
The device of any of claims 24-26, wherein the device is a disposable diaper

The sending module is further configured to send the at least one data packet to the network device, where a tail packet in the at least one data packet includes an indication value of a target field of a protocol data unit, PDU, and the indication value of the target field is used to indicate the network device to determine whether each data packet is successfully received and generate a status report;

the receiving module is further configured to receive a second DCI sent by the network device, where the second DCI includes the status report.
The apparatus of claim 27, wherein the second DCI further comprises acknowledgement information indicating whether the tail packet was demodulated successfully.
The apparatus of any one of claims 27 or 28, wherein the second DCI further comprises second indication information indicating whether the second DCI contains the status report.
The apparatus of claim 29, wherein the second indication information is one bit.
A network device, comprising: a memory for storing program code, a communication bus, and a processor for invoking the program code for performing the method of any of claims 1-8.
A terminal device, comprising: a memory for storing program code, a communication bus, and a processor for invoking the program code for performing the method of any of claims 9-15.
A computer-readable storage medium having stored therein instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-15.
A computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any one of claims 1 to 15.