WO2021072688A1

WO2021072688A1 - Data transmission method and apparatus, and device and storage medium

Info

Publication number: WO2021072688A1
Application number: PCT/CN2019/111521
Authority: WO
Inventors: 石聪; 付喆
Original assignee: Oppo广东移动通信有限公司
Priority date: 2019-10-16
Filing date: 2019-10-16
Publication date: 2021-04-22
Also published as: CN114223307A

Abstract

The present application relates to the technical field of communications, and relates to a data transmission method and apparatus, and a device and a storage medium. The method comprises: receiving a first uplink scheduling grant (UL grant) in a random access process; and if the uplink resource indicated by the first UL grant and the uplink resource indicated by a second UL grant overlap in time domain, according to the levels of a first priority and of a second priority, and/or according to a trigger event in the random access process, selecting the first UL grant or the second UL grant for data transmission, wherein the first priority corresponds to the first UL grant, and the second priority corresponds to the second UL grant. The problem that the delay requirement of a service in an IIoT scenario cannot be satisfied when a terminal randomly selects a UL grant with a low priority for data transmission is avoided.

Description

Data transmission method, device, equipment and storage medium

Technical field

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

Background technique

UL grant (uplink scheduling grant) is used to schedule uplink data, for example, it can be used to indicate uplink resources used for transmitting uplink data. In the random access process, for the RACH (Random Access Channel) in the connected state, it is possible that the uplink resource indicated by the UL grant received during the RACH process conflicts with the uplink resources indicated by other UL grants. That is, the uplink resources overlap or partially overlap in the time domain.

In related technologies, generally, the terminal randomly selects a UL grant for data transmission to solve the problem of uplink resource conflicts. However, in the IIoT (Industrial interest of Things, Industrial Internet) scenario, the data transmission delay requirements are usually high. Therefore, if the priority of the data corresponding to the UL grant randomly selected by the terminal is low when a conflict occurs, it will lead to failure. Meet the transmission delay requirements of services in the IIoT scenario.

Summary of the invention

The embodiments of the present application provide a data transmission method, device, device, and storage medium, which can be used to solve the problem that the related technology cannot meet the transmission delay requirement of the service in the IIoT scenario. The technical solution is as follows:

In one aspect, a data transmission method is provided, and the method includes:

Receive the first uplink scheduling authorization UL grant in the random access process;

If the uplink resource indicated by the first UL grant overlaps with the uplink resource indicated by the second UL grant in the time domain, then according to the priority of the first priority and the second priority, and/or according to the random Triggering event of the access process, selecting the first UL grant or the second UL grant for data transmission;

The first priority corresponds to the first UL grant, and the second priority corresponds to the second UL grant.

In another aspect, a data transmission device is provided, and the device includes:

The receiving module is used to receive the first uplink scheduling authorization UL grant in the random access process;

The selection module is configured to, if the uplink resource indicated by the first UL grant and the uplink resource indicated by the second UL grant overlap in the time domain, according to the priority of the first priority and the second priority, and/or Selecting the first UL grant or the second UL grant for data transmission according to the triggering event of the random access procedure;

In another aspect, a terminal is provided, the terminal includes a processor and a memory, the memory stores at least one instruction, and the at least one instruction is configured to be executed by the processor to implement the above-mentioned aspect Data transmission method.

In another aspect, a computer-readable storage medium is provided, the computer-readable storage medium stores at least one instruction, and the at least one instruction is configured to be executed by a processor to implement the data transmission method described in the above aspect .

In another aspect, a computer program product is provided, wherein the computer program product includes one or more computer programs, and when the computer programs are executed by a processor, they are used to implement the data described in the above aspect. Transmission method.

The beneficial effects brought about by the technical solutions provided by the embodiments of the present application include at least:

Receive the first uplink scheduling authorization UL grant in the random access process. If the uplink resource indicated by the first UL grant and the uplink resource indicated by the second UL grant overlap in the time domain, it means that the first UL grant and the second UL grant Choose one of the UL grants. For this reason, you can select UL grants according to the priority of the first priority and the second priority, and/or according to the triggering event of the random access process. Among them, the first priority The level corresponds to the first UL grant, and the second priority corresponds to the second UL grant. In this way, the selection can be made according to actual transmission requirements, avoiding the problem that when the terminal selects a lower-priority UL grant for data transmission in a random selection manner, the problem that the delay requirements of the service in the IIoT scenario cannot be met.

Description of the drawings

In order to more clearly describe the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings that need to be used in the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained from these drawings without creative work.

Fig. 1 is a schematic diagram of an implementation environment provided by an exemplary embodiment of the present application;

Fig. 2 is a flowchart of a data transmission method provided by an exemplary embodiment of the present application;

Fig. 3 is a schematic structural diagram of a data transmission device provided by an exemplary embodiment of the present application;

Fig. 4 is a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below with reference to the accompanying drawings.

Before describing in detail the data transmission method provided by the embodiment of the present application, first briefly introduce the related content and implementation environment involved in the embodiment of the present application.

First, a brief introduction is made to the relevant content involved in the embodiments of the present application.

IIoT scenario: 5G (Fifth Generation, fifth generation) IIoT scenarios need to support the transmission of services such as Industrial Automation (Factory Automation), Transport Industry (Transport Industry), and Intelligent Power (Electrical Power Distribution) in 5G systems. It has higher requirements for data transmission delay and reliability.

LCP: (Logical Channel prioritization, logical channel priority), when UE (User Equipment) acquires uplink resources for new transmission, data transmission is performed according to the priority of the logical channel. When the UE performs the priority processing of the logical channel, it follows the following priority order (arranged in the order of priority from high to low):

1) C-RNTI (Cell Radio Network Tempory Identity) MAC (Media Access Control) CE (Control Unit) or from UL-CCCH (Uplink Common Control Channel, uplink common control) Channel) data;

2) Configured Grant Confirmation MAC CE;

3) Used for BSR MAC CE except for padding buffer status report (padding BSR);

4) A single power headroom report (Single Entry PHR) MAC CE or multiple power headroom reports (Multiple Entry PHR) MAC CE;

5) Data from any logical channel except UL-CCCH;

6) MAC CE used for Recommended Bit Rate Query;

7) BSR MAC CE used to fill the buffer status report (padding BSR).

RA: (Random Access) includes CBRA (Contention-Based Random Access, contention-based random access) and CFRA (Contention Free Random Access, non-competition-based random access). Among them, CBRA usually includes the following four steps: (1) the UE sends msg1 to the network device; (2) the network device sends msg2 to the UE based on msg1 (also known as RAR (Random Access Response)); 3) The UE sends msg3 to the network device based on msg2; (4) The network device sends msg4 to the UE based on msg3. In this way, it is necessary to determine whether the UE can successfully access the network by means of competition. Among them, CFRA usually includes the following three steps: (1) The network device sends msg0 to the UE to configure dedicated resources for the UE; (2) The UE sends msg1 to the network device based on msg0, which is equivalent to initiating a random access request to the network device ; (3) The network device sends msg2 (namely RAR) to the UE based on msg1. In CFRA, because resources such as preamble (preamble) are dedicated to the UE by network equipment, the UE uses dedicated resources to initiate RA access to the network, avoiding the need for the UE and other UEs to perform resource competition judgments.

In the foregoing implementation process, when the UE sends msg1, that is, after sending the preamble, the RAR monitoring window is opened to monitor PDCCH (Physical Downlink Control Channel) to obtain msg2 (RAR). For CBRA, when the UE determines that the C-RNTI used to scramble the PDCCH matches its own C-RNTI, it carries the C-RNTI MAC CE or CCCH (Common Control Channel) SDU ( Service Data Unit, service data unit).

There are several reasons for triggering RA:

1) Initial access to the network;

2) RRC (Radio Resource Control, radio resource control) connection re-establishment;

3) The downlink data arrives, but the uplink is out of synchronization;

4) The uplink data arrives, but the uplink is out of synchronization or there is no uplink resource;

5) SR (Scheduling Request) has no corresponding transmission resources;

6) Switch;

7) BFR (Beam Failure Recovery, beam failure recovery);

8) Request other system information;

9) Transition from the RRC-INACTIVE (inactive) state to the connected state.

Among them, the above 3), 4), 5), 6) and 7) are the trigger events of the connected RA.

For the RA process in the connected state, the uplink resource indicated by the UL grant (Uplink Scheduling grant) received by the UE during the random access process may conflict with the uplink resources indicated by other UL grants. In this case, the UE needs to select a UL grant for data transmission, that is, it needs to choose whether to transmit the UL grant scheduled data received during the random access process or to transmit other UL grant scheduled data. Currently, the UE uses a random selection method to solve the resource conflict problem, that is, the UE randomly selects a UL grant for data transmission. However, in the 5G IIoT scenario, as mentioned above, the service transmission delay requirements are high. Therefore, if the priority of the data scheduled by the UL grant randomly selected by the UE is low, it cannot meet the requirements of the service in the IIoT scenario. Delay requirements. To this end, the embodiments of the present application provide a data transmission method, which can overcome the above-mentioned defects, and the specific implementation is as follows.

Next, the implementation environment involved in the embodiments of the present application will be briefly introduced.

Please refer to FIG. 1, which is a schematic diagram showing an implementation environment according to an exemplary embodiment. The implementation environment includes at least one terminal 110 and a network device 120. FIG. 1 uses a terminal as an example for illustration. The terminal 110 and the network device 120 can communicate data through a communication network. The terminal 110 and the network device 120 are both equipped with a MAC entity, so as to realize the data transmission of the MAC layer through the MAC entity, that is, in the embodiment of the present application, the terminal may realize the data transmission method through the MAC entity. As an example, the terminal 110 may be a device that can be used for data communication, such as a mobile phone or a tablet computer. In some embodiments, the terminal may also be referred to as a UE. In addition, the network device may be a network side device such as a base station.

After introducing the relevant content and implementation environment involved in the embodiments of the present application, the data transmission method provided by the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings.

Please refer to FIG. 2, which is a flowchart of a data transmission method according to an exemplary embodiment. The data transmission method can be applied to the embodiment environment shown in FIG. 1, and is executed by a terminal. It can include the following implementation steps:

Step 201: Receive the first uplink scheduling grant UL grant in the random access process.

The first UL grant is received by the UE during the random access process, and the first UL grant may be used to schedule uplink data. As an example, the first UL grant may be from RAR, or the first UL grant may also be a PDCCH scrambled by TC-RNTI (Tempory Cell Radio Network Tempory Identity, Temporary Cell Radio Network Temporary Identity) Scheduled.

As mentioned above, in the random access process, after the UE sends msg1, it monitors the PDCCH in the RAR listening window, thereby receiving the RAR (ie msg2) sent by the network device. Wherein, the RAR message may carry a first UL grant, and the first UL grant is used to indicate uplink resources used by the UE to upload uplink data. For example, in CBRA, the first UL grant can be used to indicate the uplink resources used by the UE to upload msg3. For another example, in CFRA, the first UL grant can be used to indicate the uplink resources used by the UE to upload data, and the data is The data that needs to be transmitted after the RAR message, for example, can be user data.

In another embodiment, when the first UL grant is scheduled by the PDCCH scrambled by the TC-RNTI, the TC-RNTI is used to schedule the retransmission of msg3. Specifically, the HARQ (Hybrid Automatic Repeat Request) of the MAC layer is defined in the NR (New Radio) system, which can be used to retransmit lost or erroneous data. In the random access process, when msg3 is not successfully transmitted to the network device, the network device can schedule the retransmission of msg3 through TC-RNTI. In this case, the UE can receive the first UL grant. The first UL grant is used to indicate the uplink resources used by the UE to retransmit msg3.

Step 202: If the uplink resource indicated by the first UL grant and the uplink resource indicated by the second UL grant overlap in the time domain, according to the priority of the first priority and the second priority, and/or according to the As a trigger event of the random access process, the first UL grant or the second UL grant is selected for data transmission.

Wherein, the second UL grant refers to the UL grant received by the terminal outside the random access process, which is also used for scheduling uplink data. As an example, the origin of the second UL grant may include the following situations:

The first case: the second UL grant is scheduled by the PDCCH scrambled by the C-RNTI.

The C-RNTI is configured by the network equipment for the UE and can be used to schedule uplink data. In the communication system, because there are multiple terminals, in order to distinguish different terminals, the network equipment allocates each terminal in the access state. The C-RNTI that uniquely identifies a terminal. In the communication process, the network device can scramble the PDCCH through its corresponding C-RNTI for different terminals, and use the scrambled PDCCH to schedule the downlink data or signaling that needs to be transmitted to the terminal. For the terminal, the C-RNTI allocated by the network device can be used to receive the downlink data or signaling transmitted in the PDCCH, for example, to receive the second UL grant scheduled by the PDCCH scrambled by the C-RNTI.

The second case: the second UL grant is scheduled by CS (Configured Scheduling)-RNTI scrambled PDCCH.

The foregoing description is based on an example in which the second UL grant is scheduled by the PDCCH scrambled by the C-RNTI. In this embodiment, the second UL grant may also be scheduled by the PDCCH scrambled by the CS-RNTI. In the same way, the CS-RNTI is also configured by the network equipment to the terminal, and is used to exchange data with the terminal. That is to say, for some downlink data, the network device can use CS-RNTI to scramble the PDCCH. In this way, for the terminal, it can use the CS-RNTI allocated to itself by the network device to receive the downlink data or information scheduled in the PDCCH. Let, for example, receive the second UL grant scheduled by the PDCCH scrambled by the CS-RNTI.

The third case: the second UL grant is a configured grant.

The configuration authorization is static configuration. In order to support periodic and basically fixed services (for example, users watching videos) and reduce frequent PDCCH scheduling overhead, network equipment can configure configuration authorization for the terminal so that the UE can periodically use the uplink data indicated by the configuration authorization for data transmission. In this embodiment, the configuration authorization may be acquired as the second UL grant.

The above-mentioned first priority corresponds to the first UL grant, and the second priority corresponds to the second UL grant.

As an example, the first priority may be any of the following a, b, c, and d:

a. The highest priority of all logical channels corresponding to the data carried by the first UL grant.

It is not difficult to understand that when the first UL grant carries data, the first UL grant carries at least one piece of data. According to the data type of each data, there are different logical channels. Therefore, the UL grant carries at least one piece of data. The data corresponds to at least one logical channel, and each logical channel has a priority. The UE determines the maximum value among the priorities of the at least one logical channel, and obtains the maximum value as the first priority corresponding to the first UL grant.

Among them, the priority of the logical channel can be pre-configured by the network device.

b. The MAC CE priority carried by the first UL grant.

In the above a, the first UL grant carries data as an example for description. In another embodiment, the first UL grant may not carry data, but may carry MAC CE. In this case, the first priority can be determined according to the priority of the MAC CE carried by the first UL grant, that is, the priority of the MAC CE carried by the first UL grant can be acquired as the first UL grant The corresponding first priority.

c. The MAC CE priority carried by the first UL grant and the highest priority among the priorities of all logical channels corresponding to the data.

The first UL grant may carry both data and MAC CE. In this case, the maximum value can be selected from the priority of all logical channels corresponding to the carried data and the priority of MAC CE. Use the maximum value as the first priority corresponding to the first UL grant.

For example, assuming that the priority of the logical channel corresponding to the data carried in the first UL grant includes 1, 2, and 3, and the priority of the MAC CE carried in the first UL grant is 4, then the first UL grant can be determined The corresponding first priority is 4.

d. The priority corresponding to the first UL grant, and the priority corresponding to the first UL grant is indicated by DCI (Downlink Control Information).

That is, in addition to determining the first priority according to the priority of the logical channel corresponding to the data carried in the first UL grant and/or the priority of the MAC CE, the first priority may also be indicated by DCI, or It is said that the PDCCH indicates the first priority corresponding to the first UL grant.

As an example, the second priority may be any of the following e, f, g, and h:

e. The highest priority of all logical channels corresponding to the data carried by the second UL grant.

f. The priority of the media access control MAC control unit CE carried in the second UL grant.

g. The MAC CE priority carried by the second UL grant and the highest priority among the priorities of all logical channels corresponding to the data.

h. The priority corresponding to the second UL grant, and the priority corresponding to the second UL grant is indicated by DCI.

The principles of the foregoing multiple determination methods of the second priority are similar to the principles of the foregoing multiple determination methods of the first priority. Therefore, reference may be made to the foregoing specific description of the foregoing determination methods of the first priority.

Wherein, the overlap of uplink resources in the time domain mentioned here includes: partial overlap in the time domain, or complete overlap in the time domain. According to the above description, the uplink data scheduled by the first UL grant may overlap with the time domain corresponding to the uplink data scheduled by the PDCCH scrambled by the C-RNTI, or the uplink data scheduled by the first UL grant may also overlap with the uplink data scheduled by the CS-RNTI. The time domain corresponding to the uplink data scheduled by the PDCCH scrambled by the RNTI overlaps, or, the uplink data scheduled by the first UL grant may also overlap with the time domain corresponding to the uplink data configured with the authorized scheduling.

When the uplink resource indicated by the first UL grant and the uplink resource indicated by the second UL grant overlap in the time domain, it indicates that there is a conflict in the uplink resources. At this time, one UL grant needs to be selected from the first UL grant and the second UL grant. To transmit the data scheduled by the selected UL grant.

In the embodiment of this application, when selecting a UL grant from the first UL grant and the second UL grant, at least one of the following conditions is considered: (1) The priority of the first priority and the second priority; 2) The triggering event of the random access procedure.

In this way, when there is a resource conflict, the selection can be made according to the actual communication requirements, avoiding that the terminal uses a random selection method to select a lower priority UL grant for data transmission, which cannot meet the delay requirements of the business in the IIoT scenario The problem.

The terminal considers at least one of the above (1) and (2) conditions when selecting the UL grant. For ease of understanding, the following examples will be used to introduce the specific selection process for different conditions under consideration. .

As an example, the terminal selects the first UL grant or the second UL grant for data transmission according to the priority of the first priority and the second priority.

That is, the terminal may select one UL grant from the first UL grant and the second UL grant only according to the first priority corresponding to the first UL grant and the second priority corresponding to the second UL grant.

Exemplarily, when the first priority is higher than the second priority, the first UL grant is selected for data transmission, or when the first priority is lower than the second priority, the second priority is selected UL grants data transmission.

It is not difficult to understand that the higher the priority corresponding to the UL grant, the more priority the scheduled data needs to be transmitted. Therefore, the terminal selects a higher priority from the first priority and the second priority, and selects the UL grant corresponding to the higher priority for data transmission.

For example, assuming that the first priority is 4 and the second priority is 2, the terminal selects the first UL grant to transmit data scheduled by the giant first UL grant. For another example, assuming that the first priority is 3 and the second priority is 5, the terminal selects the second UL grant to transmit the data scheduled by the second UL grant.

As another example, the terminal selects the first UL grant or the second UL grant for data transmission according to the triggering event of the random access procedure.

In this implementation manner, the selection can be made only based on the triggering event of the random access procedure.

As mentioned above, for the RA process in the connected state, there are multiple trigger events that trigger the random access process. In this implementation manner, selection can be made from the first UL grant and the second UL grant according to the trigger event of the random access process, that is, according to the triggering of the random access process corresponding to the first UL grant In the event, the first UL grant and the second UL grant are selected for data transmission.

As an example, when the trigger event of the random access procedure is the target trigger event, the first UL grant is selected for data transmission.

Further, the target trigger event is configured by the network. For example, the target trigger event may be configured by the network to the terminal through a broadcast message, or may also be configured to the terminal through RRC signaling. Or, the target trigger event is predefined.

That is to say, if the trigger event of the random access process is the target trigger event, the data scheduled by the first UL grant needs to be transmitted first, so the terminal selects the first UL grant.

As an example, the target trigger event includes a BFR trigger event.

During the communication process, the beams between the network equipment and the terminal may be misaligned due to severe channel fluctuations and other reasons, resulting in beam failures. At this time, BFR technology can be used to help network equipment or users adjust the current beam to an available beam based on the beam measurement results, thereby avoiding frequent wireless link failures caused by beam misalignment.

In the implementation, the terminal detects the beam failure condition. Since the terminal can have the latest beam measurement result, the beam recovery process can be triggered by the terminal. Illustratively, the terminal initiates a random access process based on the BFR trigger event. It is not difficult to understand that at this time The random access process is triggered by the BFR trigger event.

Since the random access process triggered by the BFR trigger event is suitable for the recovery of the uplink beam, if the second UL grant is preferentially selected and the first UL grant is discarded, the beam cannot be recovered and the second UL grnat transmission is unsuccessful. Therefore, when the triggering event of the random access process is the BFR triggering event, the terminal selects the first UR grant to transmit the data scheduled by the first UL grant, so as to realize beam recovery.

It should be noted that the above description is only an example in which the target trigger event is a BFR trigger event. In another embodiment, the target trigger event may also be other trigger events that require priority scheduling of uplink data. This embodiment of the present application There is no restriction on this.

Further, when the trigger event of the random access process is not a target trigger event, for example, the trigger event of the random access process is not a BFR trigger event, the second UL grant can be selected for data transmission, or it can be combined with other Conditions, select from the first UL grant and the second UL grant.

As another example, the terminal selects the first UL grant or the second UL grant for data transmission according to the priority levels of the first priority and the second priority, and according to the triggering event of the random access procedure.

In this implementation manner, the terminal makes a selection based on the above two conditions (1) and (2). In other words, not only the priority corresponding to the first UL grant and the second UL grant, but also the triggering event of the random access process corresponding to the first UL grant need to be considered.

As an example, the specific implementation may include: when the first priority is higher than the second priority, and the triggering event of the random access process is a BFR triggering event, selecting the first UL grant for data transmission.

That is, if the first priority is higher than the second priority, the triggering event of the random access process needs to be further considered. If the triggering event of the random access process is a BFR triggering event, it means that priority is required to The data scheduled by the first UL grant is transmitted, so the first UL grant is selected.

It should be noted that the above-mentioned specific implementation is only exemplary. In a possible implementation manner, according to the priority of the first priority and the second priority, and according to the specific implementation of the triggering event of the random access process, other situations may also be included, for example, if the first priority The priority is higher than the second priority, and the triggering event of the random access process is the above-mentioned target triggering event, then the first UL grant is selected. For another example, when the first priority is equal to the second priority, if The trigger event of the random access process is a BFR trigger event, and the terminal selects the first UL grant for data transmission.

Further, if the first priority is lower than the second priority, the second UL grant can be selected. Or, if the first priority is lower than the second priority, and the triggering event of the random triggering event is not a BFR triggering event, then the second UL grant is selected.

As an example, the specific implementation of selecting only based on the triggering event of the random access process may include: if the triggering event of the random access process is that the scheduling request SR has no corresponding transmission resources, when the logical channel triggering the SR When the priority is higher than the second priority, the first UL grant is selected for data transmission.

When there is a demand for service transmission, the terminal can send an SR to the network device to request the network device to allocate resources for the terminal. In implementation, the SR is usually triggered by a logical channel, and then the terminal sends the SR to the network device. However, if the SR does not have a corresponding transmission resource, that is, there is no transmission resource that can be used to transmit the SR, the terminal Initiating a random access process, it is not difficult to understand that the trigger event of the random access process at this time is: SR has no corresponding transmission resources. In this case, the UL grant can be selected in combination with the priority of the logical channel that triggers the SR, that is, if the priority of the logical channel that triggers the SR is higher than the second priority corresponding to the second UL grant, Then the terminal selects the first UL grant for data transmission.

Further, if the triggering event of the random access process is that the scheduling request SR has no corresponding transmission resources, when the priority of the logical channel that triggers the SR is lower than the second priority corresponding to the second UL grant, the terminal selects the second UL grants data transmission.

As an example, the specific implementation of UL grant selection according to the above two conditions may include: if the triggering event of the random access process is that the scheduling request SR has no corresponding transmission resources, when the first priority is higher than the first priority In the second priority, the first UL grant is selected for data transmission.

When there is a demand for service transmission, the terminal can send an SR to the network device to request the network device to allocate resources for the terminal. In implementation, the SR is usually triggered by a logical channel, and then the terminal sends the SR to the network device. However, if the SR does not have a corresponding transmission resource, that is, there is no transmission resource that can be used to transmit the SR, the terminal Initiating a random access process, it is not difficult to understand that the triggering event of the random access process at this time is that the SR has no corresponding transmission resources. In this case, the first priority corresponding to the first UL grant and the second priority corresponding to the second UL grant can be combined, and one UL grant can be selected from the first UL grant and the second UL grant. data transmission.

Exemplarily, if the first priority is higher than the second priority, the first UL grant is selected. For example, when the triggering event of the random access procedure is that SR has no corresponding transmission resources, if the first priority corresponding to the first UL grant is 4, the second priority corresponding to the second UL grant is 2. , Select the first UL grant to transmit the scheduled data.

Further, in the case where the triggering event of the random access procedure is that the SR has no corresponding transmission resources, if the first priority is lower than the second priority, the second UL grant can be selected for data transmission.

In this way, when the triggering event of the random access process is that the SR has no corresponding transmission resources, the UL grant selection is performed in combination with the first priority and the second priority, so as to transmit the data that needs to be sent first, and avoid the terminal When randomly selecting a lower priority UL grant for data transmission, it cannot meet the problem of the delay requirements of the service in the IIoT scenario.

Please refer to FIG. 3, which is a schematic structural diagram of a data transmission device according to an exemplary embodiment. The data transmission device may be configured in a terminal, and the device may include:

The receiving module 310 is configured to receive the first uplink scheduling authorization UL grant in the random access process;

The selection module 320 is configured to, if the uplink resource indicated by the first UL grant and the uplink resource indicated by the second UL grant overlap in the time domain, according to the priority of the first priority and the second priority, and/ Or, selecting the first UL grant or the second UL grant for data transmission according to the triggering event of the random access procedure;

In a possible implementation manner of this application, the selection module 320 is used to:

When the first priority is higher than the second priority, the first UL grant is selected for data transmission; or,

When the first priority is lower than the second priority, the second UL grant is selected for data transmission.

When the trigger event of the random access procedure is a target trigger event, the first UL grant is selected for data transmission.

In a possible implementation manner of the present application, the target trigger event includes a beam failure recovery BFR trigger event.

In a possible implementation manner of the present application, the target trigger event is configured by the network, or the target trigger event is predefined.

When the first priority is higher than the second priority, and the trigger event of the random access process is a BFR trigger event, the first UL grant is selected for data transmission.

If the triggering event of the random access process is that the scheduling request SR has no corresponding transmission resources, when the priority of the logical channel that triggers the SR is higher than the second priority, the first UL grant is selected. data transmission.

If the triggering event of the random access process is that the scheduling request SR has no corresponding transmission resource, when the first priority is higher than the second priority, the first UL grant is selected for data transmission.

In a possible implementation of this application,

The first UL grant comes from a random access response RAR; or,

The first UL grant is scheduled by the physical downlink control channel PDCCH scrambled by the temporary cell radio network temporary identification TC-RNTI.

In a possible implementation of this application,

The second UL grant is scheduled by the PDCCH scrambled by the cell radio network temporary identification C-RNTI; or,

The second UL grant is scheduled by the PDCCH scrambled by the CS-RNTI, which is configured to schedule the radio network temporary identifier; or,

The second UL grant is a configured grant.

In a possible implementation manner of this application, the first priority is any of the following:

The highest priority of all logical channels corresponding to the data carried in the first UL grant; or,

The priority of the media access control MAC control unit CE carried in the first UL grant; or,

The MAC CE priority carried in the first UL grant and the highest priority among the priorities of all logical channels corresponding to the data; or,

The priority corresponding to the first UL grant is indicated by the downlink control information DCI.

In a possible implementation manner of this application, the second priority is any of the following:

The highest priority of all logical channels corresponding to the data carried in the second UL grant; or,

The priority of the media access control MAC control unit CE carried in the second UL grant; or,

The MAC CE priority carried in the second UL grant and the highest priority among the priorities of all logical channels corresponding to the data; or,

The priority corresponding to the second UL grant is indicated by the DCI.

In the embodiment of the present application, when the uplink resource indicated by the first UL grant and the uplink resource indicated by the second UL grant received during the random access process overlap in the time domain, it is necessary to obtain information from the first UL grant and the second UL grant. Choose one of the grants. For this purpose, the UL grant selection can be selected according to the priority of the first priority and the second priority, and/or according to the triggering event of the random access process, where the first priority Corresponding to the first UL grant, and the second priority corresponds to the second UL grant. In this way, the selection can be made according to actual transmission requirements, avoiding the problem that when the terminal selects a lower-priority UL grant for data transmission in a random selection manner, the problem that the delay requirements of the service in the IIoT scenario cannot be met.

Please refer to FIG. 4, which shows a schematic structural diagram of a terminal provided by an exemplary embodiment of the present application. The terminal includes: a processor 401, a receiver 402, a transmitter 403, a memory 404, and a bus 405.

The processor 401 includes one or more processing cores, and the processor 401 executes various functional applications and information processing by running software programs and modules.

The receiver 402 and the transmitter 403 may be implemented as a communication component, and the communication component may be a communication chip.

The memory 404 is connected to the processor 401 through the bus 405.

The memory 404 may be used to store at least one instruction, and the processor 401 is used to execute the at least one instruction, so as to implement each step executed by the terminal in the foregoing method embodiments.

In addition, the memory 404 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage device includes, but is not limited to: magnetic disks or optical disks, electrically erasable and programmable Read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static anytime access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, programmable read-only memory (PROM) .

The present application provides a computer-readable storage medium in which at least one instruction is stored, and the at least one instruction is loaded and executed by the processor to implement the methods provided in the foregoing method embodiments.

This application also provides a computer program product, which when the computer program product runs on a computer, causes the computer to execute the methods provided in the foregoing method embodiments.

A person of ordinary skill in the art can understand that all or part of the steps in the above embodiments can be implemented by hardware, or by a program to instruct relevant hardware. The program can be stored in a computer-readable storage medium. The storage medium mentioned can be a read-only memory, a magnetic disk or an optical disk, etc.

The above descriptions are only preferred embodiments of this application, and are not intended to limit this application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection of this application. Within range.

Claims

A data transmission method, characterized in that the method includes:

Receive the first uplink scheduling authorization UL grant in the random access process;

If the uplink resource indicated by the first UL grant overlaps with the uplink resource indicated by the second UL grant in the time domain, then according to the priority of the first priority and the second priority, and/or according to the random Triggering event of the access process, selecting the first UL grant or the second UL grant for data transmission;

The first priority corresponds to the first UL grant, and the second priority corresponds to the second UL grant.
The method according to claim 1, wherein the selecting the first UL grant or the second UL grant for data transmission according to the priority of the first priority and the second priority includes:

When the first priority is higher than the second priority, the first UL grant is selected for data transmission; or,

When the first priority is lower than the second priority, the second UL grant is selected for data transmission.
The method according to claim 1, wherein the selecting the first UL grant or the second UL grant for data transmission according to the triggering event of the random access procedure comprises:

When the trigger event of the random access procedure is a target trigger event, the first UL grant is selected for data transmission.
The method of claim 3, wherein the target trigger event comprises a beam failure recovery BFR trigger event.
The method according to claim 3 or 4, wherein the target trigger event is configured by the network, or the target trigger event is predefined.
The method according to claim 1, characterized in that, according to the priority of the first priority and the second priority, and according to the triggering event of the random access procedure, the first UL grant or the selected The second UL grant for data transmission includes:

When the first priority is higher than the second priority, and the trigger event of the random access process is a BFR trigger event, the first UL grant is selected for data transmission.
The method according to claim 1, wherein the selecting the first UL grant or the second UL grant for data transmission according to the triggering event of the random access process comprises:

If the triggering event of the random access process is that the scheduling request SR has no corresponding transmission resources, when the priority of the logical channel that triggers the SR is higher than the second priority, the first UL grant is selected. data transmission.
The method according to claim 1, characterized in that, according to the priority of the first priority and the second priority, and according to the triggering event of the random access procedure, the first UL grant or the selected The second UL grant for data transmission includes:

If the triggering event of the random access process is that the scheduling request SR has no corresponding transmission resource, when the first priority is higher than the second priority, the first UL grant is selected for data transmission.
The method of claim 1, wherein:

The first UL grant comes from a random access response RAR; or,

The first UL grant is scheduled by the physical downlink control channel PDCCH scrambled by the temporary cell radio network temporary identification TC-RNTI.
The method of claim 1, wherein:

The second UL grant is scheduled by the PDCCH scrambled by the cell radio network temporary identification C-RNTI; or,

The second UL grant is scheduled by the PDCCH scrambled by the CS-RNTI, which is configured to schedule the radio network temporary identifier; or,

The second UL grant is a configured grant.
The method according to any one of claims 1-10, wherein the first priority is any one of the following:

The highest priority of all logical channels corresponding to the data carried in the first UL grant; or,

The priority of the media access control MAC control unit CE carried in the first UL grant; or,

The MAC CE priority carried in the first UL grant and the highest priority among the priorities of all logical channels corresponding to the data; or,

The priority corresponding to the first UL grant is indicated by the downlink control information DCI.
The method according to any one of claims 1-10, wherein the second priority is any one of the following:

The highest priority of all logical channels corresponding to the data carried in the second UL grant; or,

The priority of the media access control MAC control unit CE carried in the second UL grant; or,

The MAC CE priority carried in the second UL grant and the highest priority among the priorities of all logical channels corresponding to the data; or,

The priority corresponding to the second UL grant is indicated by the DCI.
A data transmission device, characterized in that the device includes:

The receiving module is used to receive the first uplink scheduling authorization UL grant in the random access process;

The selection module is configured to, if the uplink resource indicated by the first UL grant and the uplink resource indicated by the second UL grant overlap in the time domain, according to the priority of the first priority and the second priority, and/or Selecting the first UL grant or the second UL grant for data transmission according to the triggering event of the random access procedure;

The first priority corresponds to the first UL grant, and the second priority corresponds to the second UL grant.
The device according to claim 13, wherein the selection module is used for:

When the first priority is higher than the second priority, the first UL grant is selected for data transmission; or,

When the first priority is lower than the second priority, the second UL grant is selected for data transmission.
The device according to claim 13, wherein the selection module is used for:

When the trigger event of the random access procedure is a target trigger event, the first UL grant is selected for data transmission.
The apparatus according to claim 15, wherein the target trigger event comprises a beam failure recovery BFR trigger event.
The apparatus according to claim 15 or 16, wherein the target trigger event is configured by the network, or the target trigger event is predefined.
The device according to claim 15, wherein the selection module is used for:

When the first priority is higher than the second priority, and the trigger event of the random access process is a BFR trigger event, the first UL grant is selected for data transmission.
The device according to claim 15, wherein the selection module is used for:

If the triggering event of the random access process is that the scheduling request SR has no corresponding transmission resources, when the priority of the logical channel that triggers the SR is higher than the second priority, the first UL grant is selected. data transmission.
The device according to claim 15, wherein the selection module is used for:

If the triggering event of the random access process is that the scheduling request SR has no corresponding transmission resource, when the first priority is higher than the second priority, the first UL grant is selected for data transmission.
The device of claim 13, wherein:

The first UL grant comes from a random access response RAR; or,

The first UL grant is scheduled by the physical downlink control channel PDCCH scrambled by the temporary cell radio network temporary identification TC-RNTI.
The device of claim 13, wherein:

The second UL grant is scheduled by the PDCCH scrambled by the cell radio network temporary identification C-RNTI; or,

The second UL grant is scheduled by the PDCCH scrambled by the CS-RNTI, which is configured to schedule the radio network temporary identifier; or,

The second UL grant is a configured grant.
The device according to any one of claims 13-22, wherein the first priority is any one of the following:

The highest priority of all logical channels corresponding to the data carried in the first UL grant; or,

The priority of the media access control MAC control unit CE carried in the first UL grant; or,

The MAC CE priority carried in the first UL grant and the highest priority among the priorities of all logical channels corresponding to the data; or,

The priority corresponding to the first UL grant is indicated by the downlink control information DCI.
22. The device according to any one of claims 13-22, wherein the second priority is any one of the following:

The highest priority of all logical channels corresponding to the data carried in the second UL grant; or,

The priority of the media access control MAC control unit CE carried in the second UL grant; or,

The MAC CE priority carried in the second UL grant and the highest priority among the priorities of all logical channels corresponding to the data; or,

The priority corresponding to the second UL grant is indicated by the DCI.
A terminal, characterized in that the terminal includes a processor and a memory, the memory stores at least one instruction, and the at least one instruction is used to be executed by the processor to implement any one of the foregoing claims 1 to 12 The described data transmission method.
A computer-readable storage medium, characterized in that, the computer-readable storage medium stores at least one instruction, and the at least one instruction is used to be executed by a processor to implement any one of claims 1-12 Data transmission method.