CN113661754B - Data transmission methods, devices, user equipment and storage media - Google Patents

Abstract

This application provides a data transmission method, device, user equipment and storage medium, and relates to the field of communication technology. The method includes: transmitting target data to the base station through a first dedicated preconfigured uplink resource D-PUR; if the target data transmission fails, retransmitting the target data to the base station through the second D-PUR. In this embodiment of the present application, the user equipment transmits the target data to the base station through the first D-PUR; if the target data transmission fails, the user equipment retransmits the target data to the base station through the second D-PUR. Therefore, if the target data transmission fails, the user equipment can retransmit the target data to the base station through the second D-PUR, reducing data loss and improving the reliability of data transmission.

Description

Data transmission methods, devices, user equipment and storage media

Technical field

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

Background technique

In 5G (5th-Generation, fifth-generation mobile communication technology) technology, in order to reduce the energy consumption of user equipment, user equipment such as smart water meters, smart gas meters, and temperature and humidity controllers in the Internet of Things system can be idle or inactive. transmit data to the base station.

In related technology, the base station configures D-PUR (Dedicated Preconfigured Uplink Resource, dedicated preconfigured uplink resource) for user equipment for data transmission; the user equipment transmits data to the base station through D-PUR. If the user equipment does not receive the data within the preset time period, Feedback information to the base station confirms that the data transmission to the base station through D-PUR has failed.

Contents of the invention

Embodiments of the present application provide a data transmission method, device, user equipment and storage medium, which can reduce loss during data transmission. The technical solutions are as follows:

On the one hand, a data transmission method is provided, applied to user equipment, and the method includes:

The target data is transmitted to the base station through the first dedicated preconfigured uplink resource D-PUR; if the target data transmission fails, the target data is retransmitted to the base station through the second D-PUR.

In a possible implementation, before retransmitting the target data to the base station through the second D-PUR, the method further includes:

If there is an available D-PUR among the multiple D-PURs to which the first D-PUR belongs, select an available second D-PUR from the multiple D-PURs, and the second D-PUR is used for The target data is retransmitted to the base station.

In another possible implementation, selecting an available second D-PUR from the plurality of D-PURs includes:

Select an unused second D-PUR that is closest to the first D-PUR from the plurality of D-PURs; or,

According to the data volume of the target data, an unused second D-PUR that matches the data volume is selected from the plurality of D-PURs.

In another possible implementation, the method further includes:

If there is no available D-PUR among the multiple D-PURs, receive the D-PUR reallocated by the base station;

An available second D-PUR is selected from the D-PUR reallocated by the base station.

In another possible implementation, the method further includes:

If the feedback information returned by the base station is not received within a preset time period after the target data is transmitted to the base station, it is determined that the target data transmission fails; or,

If a control message returned by the base station indicating a failure in transmission of the target data is received within a preset time period after transmitting the target data to the base station, it is determined that the transmission of the target data has failed.

In another possible implementation manner, the control message includes a radio resource control RRC message.

In another possible implementation, if a control message returned by the base station indicating that the target data transmission failed is received within a preset time period after the target data is transmitted to the base station, determine The target data transmission failed, including:

If the physical downlink shared channel PDSCH message sent by the base station through the physical downlink control channel PDCCH is received within a preset time period after the target data is transmitted to the base station, and the PDSCH message includes a message indicating the target data When the RRC message fails to be transmitted, it is determined that the target data transmission fails.

In another possible implementation, the control message includes an uplink retransmission control message; the method further includes:

If a PDCCH message sent by the base station is received within a preset time period after the target data is transmitted to the base station, and the PDCCH message includes an uplink retransmission control message indicating that the target data transmission fails, and The uplink retransmission control message includes the resource identifier of the uplink scheduling grant UL grant;

The target data is retransmitted to the base station through the UL grant resource corresponding to the resource identifier of the UL grant.

In another possible implementation, the target data is stored in a buffer, and the method further includes:

When the target data is successfully transmitted, delete the target data in the buffer; or,

When there is no available D-PUR among the plurality of D-PURs, delete the target data in the buffer; or,

When the number of retransmissions of the target data reaches a preset number of times, the target data in the buffer is deleted.

In another possible implementation manner, the buffer is a hybrid automatic repeat request buffer HARQbuffer.

In another possible implementation, transmitting target data to the base station through the first dedicated preconfigured uplink resource D-PUR includes:

When the user equipment is in idle state, suspend state or inactive state, target data is transmitted to the base station through the first D-PUR.

On the other hand, a data transmission device is provided, which is applied to user equipment, and the device includes:

A transmission module, configured to transmit target data to the base station through the first dedicated preconfigured uplink resource D-PUR; if the target data transmission fails, retransmit the target data to the base station through the second D-PUR.

In a possible implementation, the device further includes:

A selection module configured to select an available second D-PUR from the plurality of D-PURs if there is an available D-PUR among the plurality of D-PURs to which the first D-PUR belongs, and the second D-PUR is used to retransmit the target data to the base station.

In another possible implementation, the selection module is also configured to select an unused second D-PUR that is closest to the first D-PUR from the plurality of D-PURs;

The selection module is further configured to select an unused second D-PUR that matches the data amount from the plurality of D-PURs according to the data amount of the target data.

In another possible implementation, the selection module is also configured to receive the D-PUR reallocated by the base station if there is no available D-PUR among the multiple D-PURs; from the base station Select the available second D-PUR among the redistributed D-PUR.

In another possible implementation, the device further includes:

A determination module configured to determine that the target data transmission failed if no feedback information returned by the base station is received within a preset time period after the target data is transmitted to the base station;

The determination module is also configured to determine the target data if a control message returned by the base station indicating that the target data transmission failed is received within a preset time period after the target data is transmitted to the base station. Transfer failed.

In another possible implementation manner, the control message includes a radio resource control RRC message.

In another possible implementation, the determining module is also configured to receive a physical downlink share sent by the base station through the physical downlink control channel PDCCH within a preset time period after transmitting the target data to the base station. channel PDSCH message, and the PDSCH message includes the RRC message indicating the target data transmission failure, it is determined that the target data transmission fails.

In another possible implementation, the control message includes an uplink retransmission control message; the transmission module is also configured to: if the base station receives the target data within a preset time period after transmitting the target data to the base station, The PDCCH message sent, and the PDCCH message includes an uplink retransmission control message used to indicate the failure of the target data transmission, and the uplink retransmission control message includes the resource identifier of the uplink scheduling grant UL grant; through the The ULgrant resource corresponding to the ULgrant resource identifier retransmits the target data to the base station.

In another possible implementation, the target data is stored in a buffer, and the device further includes:

A deletion module, configured to delete the target data in the buffer when the target data is successfully transmitted;

The deletion module is also configured to delete the target data in the buffer when there is no available D-PUR among the plurality of D-PURs;

The deletion module is also configured to delete the target data in the buffer when the number of retransmissions of the target data reaches a preset number of times.

In another possible implementation manner, the buffer is a hybrid automatic repeat request buffer HARQbuffer.

In another possible implementation, the transmission module is also configured to transmit data to the user through the first D-PUR when the user equipment is in an idle state, a suspend state, or an inactive state. The base station transmits target data.

On the other hand, a user equipment is provided. The user equipment includes a processor and a memory. The memory stores at least one instruction. The at least one instruction is loaded and executed by the processor to realize any of the above possibilities. Implement the data transmission method described in the method.

On the other hand, a computer-readable storage medium is provided. At least one instruction is stored in the computer-readable storage medium. The at least one instruction is loaded and executed by a processor to implement any of the above possible implementation methods. data transmission method.

On the other hand, a chip is provided. The chip includes programmable logic circuits and/or program instructions. When the chip is running, it is used to implement the data transmission method described in any of the above possible implementations.

On the other hand, a computer program product is provided. The computer program product includes one or more computer programs. When the computer program is executed by a processor, it is used to implement the data transmission method described in any of the above possible implementations. .

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

The user equipment transmits the target data to the base station through the first D-PUR; if the target data transmission fails, the user equipment retransmits the target data to the base station through the second D-PUR. Therefore, if the target data transmission fails, the user equipment can retransmit the target data to the base station through the second D-PUR, reducing data loss and improving the reliability of data transmission.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below. 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 also be obtained based on these drawings without exerting creative efforts.

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

Figure 2 is a flow chart of a data transmission method provided by an exemplary embodiment of the present application;

Figure 3 is a schematic diagram of data transmission between user equipment and a base station provided by an exemplary embodiment of the present application;

Figure 4 is a schematic diagram of data transmission between user equipment and a base station provided by an exemplary embodiment of the present application;

Figure 5 is a schematic structural diagram of a data transmission device provided by an exemplary embodiment of the present application;

Figure 6 is a schematic structural diagram of a device provided by an exemplary embodiment of this application.

Detailed ways

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

FIG. 1 is a schematic diagram of an implementation environment according to an exemplary embodiment. The implementation environment mainly includes user equipment (User Equipment, UE) 110 and base station 120. The user equipment 110 can communicate with the base station 120 through a communication network. The user equipment 110 can perform data transmission according to the method provided in the embodiment of this application. The user equipment 110 is any device that can realize data transmission. In some implementations In this example, the user equipment 110 can also be called a terminal; the base station can be an evolved Node B (eNB), that is, the 4th Generation mobile communication technology (4G) base station; or a 5g base station ( 5th-generation Node B, gNB), the embodiment of the present application does not limit this.

In this embodiment of the present application, the resource allocated by the base station 120 to the user equipment 110 is D-PUR; the user equipment 110 transmits target data to the base station 120 through the D-PUR.

The user equipment 110 may be any user equipment in the Internet of Things system, or may be a user equipment with a single service type in the Internet of Things system. For example, the user equipment 110 may be user equipment such as a smart water meter, a smart electricity meter, a smart gas meter, a temperature controller, a humidity controller, etc. In the Long Term Evolution (LTE) system, Early Data Transmission (EDT) has been introduced. Small data transmission refers to the uplink and/or downlink small data transmission performed by the user equipment 110 in an idle state (idle), a suspend state (suspend), or an inactive state (inactive).

Among them, small data can be data with a smaller data volume, that is, small data is data with a data volume smaller than a preset data volume. For example, the user equipment 110 is a temperature controller, and accordingly, the small data may be temperature change data detected by the temperature controller. Small data can also be data corresponding to a specified business type. The specified service type can be a non-immediate service type. The preset data amount can be set and changed as needed; in the embodiment of the present application, the preset data amount is not specifically limited; for example, the preset data amount can be 5 bits or 5 megabytes, etc. The target data transmitted by the user equipment 110 to the base station 120 through D-PUR may be the above-mentioned small data.

Figure 2 is a flow chart of a data transmission method according to an exemplary embodiment. The method can be applied to user equipment in the above implementation environment. The method can include the following implementation steps:

Step 201: The user equipment transmits target data to the base station through the first D-PUR.

In the 5G network, the user equipment can transmit target data to the base station through the first D-PUR in any state; the user equipment can also transmit target data to the base station through the first D-PUR in certain specific states. The specific state can be idle, suspended or inactive. Correspondingly, this step may be: when the user equipment is idle, suspended or inactive, transmit the target data to the base station through the first D-PUR.

When the user equipment is idle, suspended or inactive, the base station configures at least one D-PUR for the user equipment, and the user equipment can transmit target data to the base station through the first D-PUR of at least one D-PUR. Among them, the base station can configure D-PUR for the user equipment periodically, can also configure D-PUR for the user equipment when the user equipment accesses the base station for the first time, or can configure D-PUR for the user equipment when the user equipment needs to transmit target data. . In the embodiment of this application, there is no specific limitation on the actual way in which the base station configures D-PUR for the user equipment. Moreover, when the base station configures D-PUR for user equipment, it also configures the duration of the D-PUR and the TB size (Transport Blocksize) of the D-PUR. For example, the base station can configure a D-PUR for the user equipment every hour. The duration of the D-PUR can be 1 minute or 1 hour, etc. The TB size of the D-PUR is the maximum that can be transmitted on the D-PUR. The amount of data.

In this embodiment of the present application, the base station may configure one D-PUR for the user equipment at a time, or may configure multiple D-PURs for the user equipment at a time. In the embodiment of this application, there is no specific limit on how much D-PUR the base station configures for the user equipment. In a possible implementation, the base station may configure the user equipment with at least one D-PUR that matches the equipment type according to the equipment type of the user equipment. For example, if the user equipment is a smart meter, then the base station configures 10 D-PURs for the smart meter; if the user equipment is a controller, the base station configures 8 D-PURs for the controller. In another possible implementation manner, the base station can also configure at least one D-PUR matching the service type for the user equipment according to the service type of the target data. In another possible implementation, the base station can also configure at least one D-PUR for the user equipment that matches the data amount according to the data amount of the target data transmitted by the user equipment.

When the user equipment is idle, suspended or inactive, before transmitting the target data to the base station, the user equipment selects a D-PUR from at least one D-PUR configured by the base station, in order to facilitate subsequent retransmission of the D-PUR. To distinguish, the D-PUR selected this time is called the first D-PUR. The step of the user equipment selecting a D-PUR from at least one D-PUR configured by the base station may be: the user equipment may randomly select a D-PUR from at least one D-PUR configured by the base station; it may also select a D-PUR from at least one D-PUR configured by the base station; Select the D-PUR closest to the last used D-PUR among at least one D-PUR.

After the user equipment selects the first D-PUR, the user equipment transmits the target data to the base station through the first D-PUR. Moreover, the target data may be data in a control plane (Control Plane, CP) scheme or data in a user plane (UserPlane, UP) scheme. When the target data is data in the control plane scheme, see Figure 3, the process of the user equipment transmitting the target data to the base station can be achieved through the following steps (1) to (2), including:

(1) The user equipment sends a Radio Resource Control Early Data Request (RRCEarlyDataRequest) to the base station through the first D-PUR.

The RRCEarlyDataRequest includes the device identification of the user equipment, the establishment cause value establishmentCause, and the dedicated non-access stratum (Non-Access Stratrum, NAS) message dedicatedInfoNAS.

The device identity may be a Serving-Temporary MobileSubscriber Identity (S-TMSI). The establishmentCause is used to indicate the access type of the user device; dedicatedInfoNAS carries the target data.

If the base station receives the target data from the user equipment, and the target data is complete, the base station will return a control message indicating successful transmission to the user equipment; if the base station receives the target data, but the target data is incomplete, then The base station will return a control message indicating transmission failure to the user equipment; if the base station does not receive the target data, the base station will not return any message to the user equipment. Correspondingly, after step (1), step (2) is also included:

(2) The base station returns a control message to the user equipment.

The control message may be an RRC (Radio Resource Control, Radio Resource Control) message; and when the target data transmission is successful, the control message may be a Radio Resource Control Early Data Complete (RRCEarlyDataComplete) message. The RRCEarlyDataComplete message is used to indicate that the target data is successfully transmitted; and the RRCEarlyDataComplete message can carry a dedicated downlink NAS message; the downlink NAS message carries the downlink data to be transmitted. When the target data transmission fails, the control message may be a Radio Resource Control Connection Reject (RRCConnectionReject) message, and the RRCConnectionReject message indicates that the target data transmission fails.

When the target data is data in the user plane scheme, see Figure 4, the process of the user equipment transmitting the target data to the base station can be achieved through the following steps (A) to (B), including:

(A) The user equipment sends a Radio Resource Control Connection Resume Request (RRCConnectionResumeRequest) and target data to the base station through the first D-PUR.

The RRCConnectionResumeRequest includes the device identification of the user equipment, the recovery reason value (resumeCause) and the recovery message integrity authentication code (short Resume Message Authentication CodeIntegrity, shortResumeMAC-I).

Among them, the device identifier can be the resumeID of the device, the recovery reason value is used to indicate the access type of the user device, and the recovery message integrity authentication code is used to identify and verify the user device.

(B) The base station returns a control message to the user equipment.

The control message may be an RRC message; and when the target data transmission is successful, the control message may be a Radio Resource Control Connection Release (RRCConnectionRelease) message and the downlink data to be transmitted. The RRCConnectionRelease message may include a release cause value releaseCause, a device identification of the user equipment, and a next hop link counter (Next HopChaining Counter, NCC). When the target data transmission fails, the control message may be an RRCConnectionReject message.

In the embodiment of this application, the user equipment can directly transmit the target data to the base station through D-PUR without sending a random access request to the base station. After receiving the random access response from the base station, the user equipment can then transmit the target data to the base station, which simplifies the access process. Entering steps can improve data transmission efficiency.

One point that needs to be explained is that the target data is stored in the buffer, so that when the target data transmission fails, the target data is extracted from the buffer and the target data is re-transmitted to the base station. Among them, the buffer can be a HARQ buffer (HybridAutomatic Repeat request buffer, hybrid automatic repeat request buffer). Correspondingly, the user equipment can store the target data in the HARQ buffer in the form of MAC PDU (Media Access Control Packet Data Unit, media access control layer protocol data unit). Among them, the user equipment can store the target data in the buffer when transmitting the target data to the base station; it can also store the target data in the buffer after transmitting the target data to the base station; it can also store the target data in the buffer before transmitting the target data to the base station. , the target data is stored in the buffer. In the embodiment of the present application, the time for storing the target data is not specifically limited.

In this embodiment of the present application, when the target data transmission fails, the user equipment can also extract the target data from the buffer and then retransmit the target data, thereby improving the reliability of the target data transmission.

Another point that needs to be explained is that in this embodiment of the present application, if the target data transmission fails, the user equipment can automatically select D-PUR to retransmit the target data; therefore, step 201 can be the first time the user equipment transmits the target data to the base station. The process may also be a process in which the user equipment retransmits the target data to the base station.

Step 202: The user equipment determines the transmission result of the target data, which is either successful transmission or failed transmission.

After the user equipment transmits the target data to the base station, the base station will return a control message to the user equipment or not return any message according to the reception result of the target data. Therefore, the user equipment can determine the transmission result of the target data based on the feedback information from the base station within the preset time period.

In the first implementation, if the user equipment does not receive the feedback information returned by the base station, the target data transmission is considered to have failed; accordingly, this step can be: if the user equipment transmits the target data to the base station within a preset time period If the feedback information returned by the base station is not received, the user equipment determines that the target data transmission fails.

Among them, the control of the preset duration can be realized through a timer. When the user equipment transmits the target data to the base station, the timer is started, and the timing duration of the timer is the preset duration. If the timer times out and the user equipment has not received feedback information from the base station, the user equipment determines that the target data transmission has failed; if the timer has not timed out and the user equipment has received feedback information from the base station, the user equipment can, based on the feedback information from the base station, Determine whether the transmission result of the target data is successful transmission or transmission failure. When the target data transmission is successful or fails, the timer is stopped.

In the embodiment of the present application, it is relatively simple for the user equipment to determine whether the transmission of the target data fails based on the feedback information from the base station within a preset time period.

In the second implementation manner, if the user equipment receives feedback information returned by the base station, it determines the transmission result of the target data based on the feedback information. Accordingly, this step may be: if the user equipment receives a control message returned by the base station within a preset time period after transmitting the target data to the base station indicating that the target data transmission has failed, the user equipment determines that the target data transmission has failed.

In a possible implementation manner, the control message includes an RRC message, and the user equipment can determine the transmission result of the target data according to the RRC message. For example, the RRC message may be the RRCEarlyDataComplete message in the control plane scheme, and the RRCEarlyDataComplete message indicates that the target data is successfully transmitted. The RRC message may also be an RRCConnectionRelease message in the user plane scheme, and the RRCConnectionRelease message indicates that the target data transmission is successful. The RRC message may also be an RRCConnectionReject message, which is used to indicate target data transmission failure.

The base station can send control messages to users through PDCCH (Physical Downlink Control Channel, physical downlink control channel); user equipment monitors PDCCH scheduling, and PDCCH can schedule PDSCH (Physical Downlink Shared Channel, physical downlink shared channel). According to the RRC message included in the PDSCH, Determine the transfer results of the target data. Correspondingly, if the user equipment receives a control message returned by the base station within a preset time period after transmitting the target data to the base station to indicate the failure of the target data transmission, the step for the user equipment to determine that the target data transmission fails may be: if the user equipment transmits the target data to the base station When the base station receives the physical downlink shared channel PDSCH message sent by the base station through the physical downlink control channel PDCCH within a preset time period after the base station transmits the target data, and the PDSCH message includes an RRC message indicating the target data transmission failure, it is determined that the target data transmission failed. .

In this embodiment of the present application, the user equipment can determine the success or failure of the target data transmission through the control message sent by the base station, thereby retransmitting or stopping the transmission of the target data according to the transmission result of the target data, thereby improving the efficiency of data transmission and the reliability of data transmission. sex.

In another possible implementation manner, the base station can retransmit the target data to the base station through uplink retransmission scheduled by the PDCCH. User equipment monitors PDCCH scheduling, PDCCH can schedule uplink retransmission, and user equipment can retransmit target data to the base station through the dynamic resources indicated by PDCCH. The control message includes an uplink retransmission control message. Accordingly, the user equipment retransmits the target data to the base station according to the uplink retransmission control message. If the user equipment receives the target data within a preset time period after transmitting the target data to the base station, The PDCCH message sent by the base station, and the PDCCH message includes an uplink retransmission control message used to indicate the target data transmission failure, and the uplink retransmission control message includes the resource identifier of ULgrant (Uplink grant, uplink scheduling grant); through the UL grant The ULgrant resource corresponding to the resource identifier retransmits the target data to the base station.

In the embodiment of this application, the user equipment can also obtain the dynamic resources configured by the base station for the user equipment according to the uplink retransmission control message sent by the base station, and retransmit the target data to the base station to improve the reliability of data transmission.

It should be noted that if the user equipment determines that the transmission result of the target data is transmission success, the user equipment will no longer perform steps 203 and 204; if the user equipment determines that the transmission result of the target data is transmission failure, the user equipment will only perform step 203. and step 204.

Step 203: If the target data transmission fails, the user equipment obtains the second D-PUR.

If the target data transmission fails, the user equipment can obtain the second D-PUR by itself and re-transmit the target data to the base station through the second D-PUR. When the user equipment obtains the second D-PUR, there are two main situations:

First: Currently, there are still available D-PURs in the D-PUR configured by the base station for the user equipment.

Correspondingly, the step for the user equipment to obtain the second D-PUR may be: if there is an available D-PUR among the multiple D-PURs to which the first D-PUR belongs, the user equipment selects the available third D-PUR from the multiple D-PURs. 2D-PUR.

In the embodiment of this application, if the target data transmission fails, the user equipment can obtain the available D-PUR by itself and retransmit the target data to the base station. The base station does not need to allocate dynamic resources to the user equipment. It can effectively utilize existing resources and reduce data loss and improve the reliability of data transmission.

Among them, there may be multiple available D-PURs, and the user equipment can select an available second D-PUR from the multiple available D-PURs. The user equipment can randomly select an available second D-PUR from multiple available D-PURs, or it can select the most recently available D-PUR. Correspondingly, the step for the user equipment to select an available second D-PUR from multiple D-PURs may be: the user equipment selects an unused second D-PUR that is closest to the first D-PUR from multiple D-PURs. -PUR.

In this embodiment of the present application, the user equipment selects the most recently available D-PUR from multiple D-PURs, can quickly obtain the D-PUR, and retransmits the target data to the base station, thereby improving the efficiency of data transmission.

User equipment can also select available D-PUR based on the TB size of D-PUR and the amount of target data. Correspondingly, the step for the user equipment to select an available second D-PUR from multiple D-PURs may also be: the user equipment selects from multiple D-PURs that match the data amount of the target data based on the data amount of the target data. of, and unused, second D-PUR. For example, the user equipment can select a TB size slightly larger than the target data from multiple D-PURs based on the TB size of the D-PUR, which is the maximum data volume that the D-PUR can transmit, and the data volume of the target data, and Unused second D-PUR.

In the embodiment of this application, the user equipment selects a D-PUR that matches the data amount of the target data according to the data amount of the target data. This not only ensures that the target data is completely transmitted through the D-PUR, improves the reliability of data transmission, but also Make rational use of resources and reduce waste of resources.

Second: Currently, there is no available D-PUR in the D-PUR configured by the base station for the user equipment.

If there is no available D-PUR in the D-PUR currently configured by the base station for the user equipment, the user equipment can receive the D-PUR re-allocated by the base station for the user equipment and select the available D-PUR from the D-PUR re-allocated by the base station for the user equipment. -PUR. Correspondingly, the step for the user equipment to obtain the second D-PUR may also be: if there is no available D-PUR among the multiple D-PURs to which the first D-PUR belongs, the user equipment receives the D-PUR redistributed by the base station; An available second D-PUR is selected from the D-PUR reallocated by the base station.

If there is no available D-PUR among the multiple D-PURs to which the first D-PUR belongs, the user equipment can send a configuration request to the base station to request the base station to reconfigure the available D-PUR; the base station responds to the configuration request of the user equipment , reallocate at least one available D-PUR to the user equipment; the user equipment receives at least one D-PUR reallocated by the base station, and selects an available second D-PUR from the at least one D-PUR reallocated by the base station. Among them, the user equipment can randomly select an available second D-PUR from at least one D-PUR reallocated by the base station; the user equipment can also select an available second D-PUR from the at least one D-PUR reallocated by the base station. D-PUR is the nearest second D-PUR; the user equipment can also select a second D-PUR that matches the data amount of the target data from at least one D-PUR reallocated by the base station.

In the embodiment of this application, if there is no available D-PUR, the user equipment can also select the D-PUR reconfigured by the base station for the user equipment and continue to retransmit the target data to the base station, thereby reducing data loss and improving the reliability of data transmission.

Step 204: The user equipment retransmits the target data to the base station through the second D-PUR.

The target data is stored in the buffer. Accordingly, this step may be: the user equipment extracts the target data that fails to be transmitted from the buffer, and retransmits the target data to the base station through the second D-PUR. Among them, the buffer can be HARQbuffer. The step of the user equipment retransmitting the target data to the base station through the second D-PUR is similar to step 201 and will not be described again here.

One point that needs to be explained is that if the target data is retransmitted successfully, the user equipment can transmit the next target data to the base station; if the target data retransmission fails, the user equipment can also obtain the third D-PUR through the third D-PUR. The target data is retransmitted to the base station until the target data is successfully transmitted; or the number of transmissions of the target data reaches a preset number of times. Among them, the steps for the user equipment to determine whether the target data is successfully retransmitted are similar to the steps for the user equipment to determine whether the target data is successfully transmitted; and the steps for the user equipment to obtain the third D-PUR are similar to the steps for the user equipment to obtain the second D-PUR. , which will not be described in detail here.

Another point that needs to be explained is that the user device can also delete the target data in the buffer in time; among them, there are actually three ways for the user to delete the target data in the buffer:

First: When the target data transmission is successful, the user device deletes the target data in the buffer.

When the target data is successfully transferred, the user device does not need to continue caching the target data, so the target data in the buffer can be deleted, thereby freeing up the storage space in the buffer for storing other data that has not been successfully transferred.

Second: When there is no available D-PUR among multiple D-PURs, the user device deletes the target data in the buffer.

If there is no available D-PUR among the multiple D-PURs currently configured by the base station for the user equipment and the target data cannot be retransmitted to the base station through the D-PUR, the user equipment can delete the target data in the buffer.

One point that needs to be explained is that when there is no available D-PUR among multiple D-PURs, the user equipment can also receive the D-PUR reconfigured by the base station for the user equipment without deleting the target data in the buffer. The reconfigured D-PUR transmits the target data to the base station, and the target data in the buffer is not deleted until the target data transmission is successful.

In the embodiment of this application, when there is no available D-PUR, the user equipment can delete the target data in the buffer and no longer retransmit the target data to the base station, thereby reducing the continuous occupation of resources by target data that fails to be transmitted and reducing resources. waste. The user equipment can also receive the D-PUR reconfigured by the base station for the user equipment, and then retransmit the target data to the base station through the reconfigured D-PUR, reducing data loss and improving the reliability of data transmission.

Third: When the number of retransmissions of the target data reaches the preset number of times, the user device deletes the target data in the buffer.

The user equipment can also control the number of retransmissions of the target data. When the number of retransmissions of the target data reaches the preset number, the user equipment will no longer retransmit the target data to the base station and delete the target data in the buffer. The preset number of times can be a set reasonable value, for example, the preset number of times can be 5, 10, and other reasonable values; the preset number of times can also be set according to the delay and the timeout time of the timer, and there is no specific limit here.

In the embodiment of the present application, when the number of retransmissions of the target data reaches a preset number of times, the target data in the buffer is deleted and the target data is no longer retransmitted to the base station, which can reduce the continued occupation of resources by the failed target data. , improve data transmission efficiency.

In this embodiment of the present application, the user equipment transmits the target data to the base station through the first D-PUR; if the target data transmission fails, the user equipment retransmits the target data to the base station through the second D-PUR. Therefore, if the target data transmission fails, the user equipment can retransmit the target data to the base station through the second D-PUR, reducing data loss and improving the reliability of data transmission.

Figure 5 is a schematic structural diagram of a data transmission device according to an exemplary embodiment, applied to user equipment, and the device includes:

The transmission module 501 is configured to transmit target data to the base station through the first dedicated preconfigured uplink resource D-PUR; if the target data transmission fails, retransmit the target data to the base station through the second D-PUR.

In a possible implementation, the device further includes: a selection module, configured to select an available D-PUR from the plurality of D-PURs if there are available D-PURs among the plurality of D-PURs to which the first D-PUR belongs. The second D-PUR is used to retransmit the target data to the base station.

In another possible implementation, the selection module is also used to select an unused second D-PUR that is closest to the first D-PUR from multiple D-PURs;

The selection module is also used to select an unused second D-PUR that matches the data volume from multiple D-PURs based on the data volume of the target data.

In another possible implementation, the selection module is also used to receive the D-PUR re-allocated by the base station if there is no available D-PUR among the multiple D-PURs; and select from the D-PUR re-allocated by the base station. Second D-PUR available.

In another possible implementation, the device further includes:

A determination module configured to determine that the target data transmission failed if no feedback information returned by the base station is received within a preset time period after the target data is transmitted to the base station;

The determining module is also configured to determine that the target data transmission fails if a control message returned by the base station indicating a target data transmission failure is received within a preset time period after the target data is transmitted to the base station.

In another possible implementation manner, the control message includes a radio resource control RRC message.

In another possible implementation, the determining module is also configured to receive a physical downlink shared channel PDSCH message sent by the base station through the physical downlink control channel PDCCH within a preset time period after transmitting the target data to the base station, and the PDSCH message contains When the RRC message indicating the target data transmission failure is included, it is determined that the target data transmission failed.

In another possible implementation, the control message includes an uplink retransmission control message; the transmission module 501 is also configured to receive a PDCCH message sent by the base station within a preset time period after transmitting the target data to the base station, and the PDCCH message contains The uplink retransmission control message is included to indicate the target data transmission failure, and the uplink retransmission control message includes the resource identifier of the uplink scheduling grant UL grant; the target data is retransmitted to the base station through the UL grant resource corresponding to the resource identifier of the UL grant.

In another possible implementation, the target data is stored in the buffer, and the device further includes:

The deletion module is used to delete the target data in the buffer when the target data transmission is successful;

The deletion module is also used to delete the target data in the buffer when there is no available D-PUR among multiple D-PURs;

The deletion module is also used to delete the target data in the buffer when the number of retransmissions of the target data reaches a preset number of times.

In another possible implementation, the buffer is a hybrid automatic repeat request buffer HARQ buffer.

In another possible implementation, the transmission module 501 is also configured to transmit target data to the base station through the first D-PUR when the user equipment is in the idle state, suspend state, or inactive state.

In this embodiment of the present application, the user equipment transmits the target data to the base station through the first D-PUR; if the target data transmission fails, the user equipment retransmits the target data to the base station through the second D-PUR. Therefore, if the target data transmission fails, the user equipment can retransmit the target data to the base station through the second D-PUR, reducing data loss and improving the reliability of data transmission.

Figure 6 is a schematic structural diagram of a device according to an exemplary embodiment. The device may be user equipment. The device includes: processor 601, receiver 602, transmitter 603, memory 604 and bus 605.

The processor 601 includes one or more processing cores. The processor 601 executes various functional applications and information processing by running software programs and modules.

The receiver 602 and the transmitter 603 can be implemented as a communication component, and the communication component can be a communication chip.

Memory 604 is connected to processor 601 through bus 605.

The memory 604 may be used to store at least one instruction, and the processor 601 is used to execute the at least one instruction to implement each step performed by the device in each of the above method embodiments.

Additionally, memory 604 may be implemented by any type of volatile or non-volatile storage device, or combination thereof, including but not limited to: magnetic or optical disks, electrically erasable programmable Read-only memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Static Read-Only Memory (SRAM), Read-Only Memory (ROM), Magnetic Memory, Flash Memory, Programmable Read-Only Memory (PROM) .

The present application provides a computer-readable storage medium. At least one instruction is stored in the storage medium. The at least one instruction is loaded and executed by the processor to implement the data transmission method provided by each of the above method embodiments.

This application also provides a chip, which includes programmable logic circuits and/or program instructions, and is used to implement the data transmission method provided by each of the above method embodiments when the chip is running.

This application also provides a computer program product. The computer program product includes one or more computer programs. When the computer program is executed by a processor, it is used to implement the data transmission method provided by each of the above method embodiments.

Those of ordinary skill in the art can understand that all or part of the steps to implement the above embodiments can be completed by hardware, or can be completed by instructing relevant hardware through a program. The program can be stored in a computer-readable storage medium. The above-mentioned The storage media mentioned can be read-only memory, magnetic disks or optical disks, etc.

The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the protection of the present application. within the range.

Claims (19)

1. A data transmission method, characterized in that it is applied to user equipment, and the method includes: Transmit target data to the base station through the first dedicated preconfigured uplink resource D-PUR; If the target data transmission fails, retransmit the target data to the base station through the second D-PUR; Before retransmitting the target data to the base station through the second D-PUR, the method further includes: If there is an available D-PUR among the multiple D-PURs to which the first D-PUR belongs, select an unused second D-PUR that is closest to the first D-PUR from the multiple D-PURs. -PUR; or, according to the data volume of the target data, select an unused second D-PUR that matches the data volume from the plurality of D-PURs, wherein the second D-PUR PUR is used to retransmit the target data to the base station; The method also includes: If there is no available D-PUR among the multiple D-PURs, receive the D-PUR reallocated by the base station; An available second D-PUR is selected from the D-PUR reallocated by the base station. 2. The method according to claim 1, characterized in that, the method further comprises: If the feedback information returned by the base station is not received within a preset time period after the target data is transmitted to the base station, it is determined that the target data transmission fails; or, If a control message returned by the base station indicating a failure in transmission of the target data is received within a preset time period after transmitting the target data to the base station, it is determined that the transmission of the target data has failed. 3. The method according to claim 2, characterized in that the control message includes a Radio Resource Control (RRC) message. 4. The method according to claim 3, characterized in that if a message returned by the base station indicating that the target data transmission failed is received within a preset time period after the target data is transmitted to the base station, control message, it is determined that the target data transmission failed, including: If the physical downlink shared channel PDSCH message sent by the base station through the physical downlink control channel PDCCH is received within a preset time period after the target data is transmitted to the base station, and the PDSCH message includes a message indicating the target data When the RRC message fails to be transmitted, it is determined that the target data transmission fails. 5. The method according to claim 2, wherein the control message includes an uplink retransmission control message; the method further includes: If a PDCCH message sent by the base station is received within a preset time period after the target data is transmitted to the base station, and the PDCCH message includes an uplink retransmission control message indicating that the target data transmission fails, and The uplink retransmission control message includes the resource identifier of the uplink scheduling grant UL grant; The target data is retransmitted to the base station through the UL grant resource corresponding to the resource identifier of the UL grant. 6. The method according to claim 1, characterized in that the target data is stored in a buffer, the method further comprising: When the target data is successfully transmitted, delete the target data in the buffer; or, When there is no available D-PUR among the plurality of D-PURs, delete the target data in the buffer; or, When the number of retransmissions of the target data reaches a preset number of times, the target data in the buffer is deleted. 7. The method according to claim 6, wherein the buffer is a hybrid automatic repeat request buffer (HARQ buffer). 8. The method according to claim 1, wherein transmitting target data to the base station through the first dedicated preconfigured uplink resource D-PUR includes: When the user equipment is in an idle state, a suspended state or an inactive state, the target data is transmitted to the base station through the first D-PUR. 9. A data transmission device, characterized in that it is applied to user equipment, and the device includes: A transmission module configured to transmit target data to the base station through the first dedicated preconfigured uplink resource D-PUR; if the target data transmission fails, retransmit the target data to the base station through the second D-PUR; The device also includes: A selection module configured to select an available second D-PUR from the plurality of D-PURs if there is an available D-PUR among the plurality of D-PURs to which the first D-PUR belongs, and the second D-PUR is used to retransmit the target data to the base station; The selection module is also configured to select an unused second D-PUR that is closest to the first D-PUR from the plurality of D-PURs; The selection module is also configured to select an unused second D-PUR that matches the data amount from the plurality of D-PURs according to the data amount of the target data; The selection module is also configured to receive the D-PUR re-allocated by the base station if there is no available D-PUR among the multiple D-PURs; and select the available D-PUR from the D-PUR re-allocated by the base station. Second D-PUR. 10. The device according to claim 9, characterized in that the device further comprises: A determination module configured to determine that the target data transmission failed if no feedback information returned by the base station is received within a preset time period after the target data is transmitted to the base station; The determination module is also configured to determine the target data if a control message returned by the base station indicating that the target data transmission failed is received within a preset time period after the target data is transmitted to the base station. Transfer failed. 11. The apparatus according to claim 10, wherein the control message includes a Radio Resource Control (RRC) message. 12. The device according to claim 11, wherein the determining module is further configured to receive the physical downlink control channel PDCCH from the base station within a preset time period after transmitting the target data to the base station. When the physical downlink shared channel PDSCH message is sent, and the PDSCH message includes the RRC message indicating the target data transmission failure, it is determined that the target data transmission fails. 13. The device according to claim 10, wherein the control message includes an uplink retransmission control message; the transmission module is further configured to: within a preset time period after transmitting the target data to the base station The PDCCH message sent by the base station is received, and the PDCCH message includes an uplink retransmission control message used to indicate the target data transmission failure, and the uplink retransmission control message includes the resources of the uplink scheduling grant UL grant. Identification: retransmit the target data to the base station through the UL grant resource corresponding to the resource identifier of the UL grant. 14. The device according to claim 9, wherein the target data is stored in a buffer, the device further comprising: A deletion module, configured to delete the target data in the buffer when the target data is successfully transmitted; The deletion module is also configured to delete the target data in the buffer when there is no available D-PUR among the plurality of D-PURs; The deletion module is also configured to delete the target data in the buffer when the number of retransmissions of the target data reaches a preset number of times. 15. The device according to claim 14, wherein the buffer is a hybrid automatic repeat request buffer (HARQ buffer). 16. The apparatus according to claim 9, wherein the transmission module is further configured to transmit data through the first user equipment when the user equipment is in an idle state, a suspended state or an inactive state. A D-PUR transmits target data to the base station. 17. A user equipment, characterized in that the user equipment includes a processor and a memory, the memory stores at least one instruction, and the at least one instruction is loaded and executed by the processor to implement claims 1 to 17. The data transmission method described in any one of 8. 18. A computer-readable storage medium, characterized in that at least one instruction is stored in the computer-readable storage medium, and the at least one instruction is loaded and executed by a processor to implement any one of claims 1 to 8 Described data transmission method. 19. A chip, characterized in that the chip includes programmable logic circuits and/or program instructions, which are used to implement the data transmission method according to any one of claims 1 to 8 when the chip is running.