CN114205307B - Data packet transmission method, RLC entity and storage medium - Google Patents

Abstract

The invention discloses a data packet transmission method, an RLC entity and a storage medium, which are used for reducing negative effects generated by segmented data packets so as to improve the utilization of computing resources of a receiving end, and comprise the following steps: receiving a transmission instruction sent by a Media Access Control (MAC) entity; the transmission instruction is used for indicating the RLC entity to transmit the data packet to the MAC entity; the transmission instruction includes a transmission block size; determining the size of a current data packet to be transmitted in the plurality of data packets to be transmitted; if the size of the current data packet to be transmitted is larger than the size of the transmission block, if the target data packet exists in the plurality of data packets to be transmitted, the target data packet is sent to the MAC entity; the size of the target data packet is less than or equal to the transport block size.

Description

Data packet transmission method, RLC entity and storage medium

technical field

The invention relates to the technical field of communication, in particular to a data packet transmission method, an RLC entity and a storage medium.

Background technique

In the radio link control (RLC) layer of the 5th generation mobile communication technology new radio (5GNR) protocol stack, a complete data packet corresponds to a radio link control protocol data unit (radio link control protocol data unit, RLC PDU). After receiving the transmission instruction indicated by the medium access control (medium access control, MAC) layer, the RLC entity puts the RLC PDU to be sent into the transmission block for transmission according to the size of the transmission block indicated in the transmission instruction.

However, when the transmission block cannot fully accommodate the RLC PDU to be sent (the size of the data block is smaller than the size of the RLC PDU to be sent), the RLC entity sends the RLC PDU in segments, that is, sends a part of the RLC PDU first , and the remaining part waits for the transmission instruction to be received again before sending. When the next transmission instruction arrives, due to the existence of the above segmented RLC PDU, other RLC PDUs that could have been completely placed in the transmission block may not be completely sent, resulting in a vicious circle, which in turn leads to low utilization of computing resources at the receiving end.

Contents of the invention

The invention provides a data packet transmission method, an RLC entity and a storage medium, which are used to reduce the negative impact caused by segmented data packets, and further improve the utilization of computing resources at the receiving end.

In order to achieve the above object, the present invention adopts following technical scheme:

In the first aspect, a data packet transmission method is provided, which is applied to a radio link control RLC entity, including: receiving a transmission instruction sent by a medium access control MAC entity; the transmission instruction is used to instruct the RLC entity to transmit a data packet to the MAC entity; The instruction includes the transmission block size; for the current data packet to be transmitted among the multiple data packets to be transmitted, determine the size of the current data packet to be transmitted; when the size of the current data packet to be transmitted is greater than the transmission block size, if multiple If there is a target data packet in the transmission data packet, the target data packet is sent to the MAC entity; the size of the target data packet is smaller than or equal to the size of the transmission block.

Optionally, the above method further includes: if the size of the current data packet to be transmitted is greater than the size of the transmission block, if there is no target data packet among the multiple data packets to be transmitted, then obtaining the polling value of the current data packet to be transmitted ; The polling value of the current data packet to be transmitted is the number of times that the RLC entity performs the determination of the size of the current data packet to be transmitted; when the polling value of the current data packet to be transmitted is greater than or equal to the first threshold, send the current Packets to be transmitted.

Optionally, after determining the size of the current data packet to be transmitted, the above method further includes: updating the polling value of the current data packet to be transmitted according to a preset increment.

Optionally, the above method also includes: when the polling value of the current data packet to be transmitted is less than the first threshold, obtaining the transmission duration; the transmission duration is the duration obtained by the RLC entity responding to the transmission instruction to start counting; when the transmission duration is greater than Or in the case of being equal to the second threshold, send the currently to-be-transmitted data packet to the MAC entity.

In a second aspect, a radio link control RLC entity is provided, including a receiving unit, a determining unit, a judging unit, and a sending unit; the receiving unit is used to receive the transmission instruction sent by the medium access control MAC entity; the transmission instruction is used to indicate the RLC The entity transmits the data packet to the MAC entity; the transmission instruction includes the size of the transmission block; the determination unit is used to determine the size of the current data packet to be transmitted for the current data packet to be transmitted among the multiple data packets to be transmitted; the judging unit is used to judge Whether the size of the current data packet to be transmitted is greater than the size of the transmission block; the judging unit is also used to sequentially determine the size of other data packets to be transmitted and determine whether there is a target when the size of the current data packet to be transmitted is greater than the size of the transmission block Data packet; sending unit, used to send the target data packet to the MAC entity if the size of the current data packet to be transmitted is greater than the transmission block size, if there is a target data packet in a plurality of data packets to be transmitted; The size is less than or equal to the transport block size.

Optionally, the RLC entity also includes an acquisition unit; the acquisition unit is used to obtain the current pending data packet if the target data packet does not exist in the multiple pending data packets when the size of the current data packet to be transmitted is greater than the size of the transmission block. The polling value of the transmission data packet; the current polling value of the data packet to be transmitted is the number of times that the RLC entity performs the determination of the size of the current data packet to be transmitted; the sending unit is also used for when the current polling value of the data packet to be transmitted is greater than or If it is equal to the first threshold, send the currently to-be-transmitted data packet to the MAC entity.

Optionally, the RLC entity further includes an updating unit; the updating unit is configured to update the polling value of the current data packet to be transmitted according to a preset increment.

Optionally, the above acquisition unit is also used to: obtain the transmission duration when the polling value of the current data packet to be transmitted is less than the first threshold; the transmission duration is the duration obtained by the RLC entity responding to the transmission instruction to start counting; sending The unit is further configured to send the current data packet to be transmitted to the MAC entity when the transmission duration is greater than or equal to the second threshold.

In a third aspect, a radio link control RLC entity is provided, including: a processor and a memory; wherein, the memory is used to store one or more programs, and the one or more programs include computer-executable instructions. When the RLC entity is running, The processor executes the computer-executed instructions stored in the memory, so that the RLC entity executes the data packet transmission method of the first aspect above.

In a fourth aspect, a computer-readable storage medium is provided, wherein instructions are stored in the computer-readable storage medium, and when the instructions run on the radio link control RLC entity, the radio link control RLC entity executes the above-mentioned The data packet transmission method of the first aspect.

The technical solution provided by the present invention brings at least the following beneficial effects: after the RLC entity receives the transmission instruction sent by the MAC entity for instructing the RLC entity to transmit data packets to the MAC entity, it determines the current pending data packet to be transmitted among the multiple data packets to be transmitted. The size of the transmitted data packet; since the transmission instruction includes the size of the transmission block, if the size of the current data packet to be transmitted is greater than the size of the transmission block, if there are target data whose size is smaller than or equal to the transmission block in multiple data packets to be transmitted packet, send the target data packet to the MAC entity instead of directly sending the current data packet to be transmitted to the MAC entity. In this way, the impact on the data packets to be transmitted whose size is smaller than or equal to the size of the transmission block after the current data packet to be transmitted is segmented due to the size of the current data packet to be transmitted being larger than the size of the transmission block can be reduced, thereby avoiding a vicious circle and further This causes a problem of low utilization of computing resources at the receiving end.

Description of drawings

FIG. 1 is a schematic diagram of a network protocol stack architecture provided by an embodiment of the present invention;

2 is a schematic flow diagram of a network protocol stack processing downlink data provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a communication system provided by an embodiment of the present invention;

FIG. 4 is a first schematic flow diagram of a data packet transmission method provided by an embodiment of the present invention;

FIG. 5 is a second schematic flow diagram of a data packet transmission method provided by an embodiment of the present invention;

FIG. 6 is a first schematic structural diagram of an RLC entity provided by an embodiment of the present invention;

FIG. 7 is a second schematic structural diagram of an RLC entity provided by an embodiment of the present invention;

FIG. 8 is a third structural schematic diagram of an RLC entity provided by an embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used as examples, illustrations or illustrations. Any embodiment or design solution described as "exemplary" or "for example" in the embodiments of the present invention shall not be construed as being more preferred or more advantageous than other embodiments or design solutions. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete manner.

In the description of the present invention, unless otherwise specified, "/" means "or", for example, A/B may mean A or B. The "and/or" in this article is just an association relationship describing associated objects, which means that there can be three relationships, for example, A and/or B, which can mean: A exists alone, A and B exist at the same time, and B exists alone These three situations. In addition, "at least one" and "plurality" mean two or more. Words such as "first" and "second" do not limit the number and order of execution, and words such as "first" and "second" do not necessarily limit the difference.

The related technologies involved in the embodiments of the present application will be described below.

In related technologies, data transmission between terminals is implemented by means of a packet forwarding network. For example, before the first terminal transmits data to the second terminal, the second terminal may send a maximum transmission unit (maximum rransmission unit, MTU) message to the first terminal, indicating the maximum size of the data service unit that it can receive; When sending data to the second terminal through the network side, a complete data is divided into multiple data packets conforming to the MTU, and these data packets are sent to the second terminal through the network side. For example, when the MTU message indicates that the maximum size of the data service unit that the second terminal can receive is 1.5Kb, the first terminal can divide a complete data (data size is 4.5Kb) into three 1.5Kb data packets, and These data packets are encapsulated and sent to the network side, and then forwarded to the second terminal by the network side.

Based on the packet forwarding network, the second terminal can process the data only after receiving all the data packets corresponding to the data. Since it takes a long time for the second terminal to receive all the data packets corresponding to the data, its computing resources are in an idle state, which will reduce the utilization rate of the computing resources of the second terminal. On the other hand, when the first terminal transmits data to the second terminal through the network side, in order to avoid the congestion of the transmission link, the network side usually uses a congestion control algorithm to make multiple terminals share the transmission between the first terminal and the second terminal. The bandwidth of the link will further increase the time for transmitting data, which will further increase the time during which the computing resources of the second terminal are in an idle state, and the utilization rate of computing resources will be lower.

Based on the above phenomenon, the future network proposes a burst forwarding technology, the first terminal can encapsulate a complete data into a complete data packet and send it, so that the second terminal can immediately start processing the data after receiving the data packet. Processing is performed, so as to improve the utilization rate of computing resources of the second terminal.

An embodiment of the present application provides a schematic diagram of a terminal network protocol stack architecture, as shown in FIG. 1 , the network protocol stack includes a service data adaptation protocol (service data adaptation protocol, SDAP) layer, a packet data convergence protocol (packet data convergence protocol) , PDCP) layer, radio link control structure (radio link control structure, RLC) layer, medium access control (medium access control, MAC) layer and physical (physical, PHY) layer; correspondingly, the protocol stack of the peer network side is also as The protocol stack of the terminal, including SDAP layer, PDCP layer, RLC layer, MAC layer and PHY layer.

Among them, the PDCP layer communicates with the MAC layer through the logical channel of the RLC layer. The data received by the RLC layer from the PDCP layer or sent to the PDCP layer is called RLC SDU or PDCP PDU; the data received by the RLC layer from the MAC layer or sent to the MAC layer Layer data is called RLC PDU or MAC SDU. Here, a protocol data unit (protocol data unit, PDU) is used to indicate data transmission according to a related protocol, and a service data unit (service data unit, SDU) is used to bear the transmitted data.

Based on the above-mentioned network protocol stack architecture, as shown in Figure 2, a flow diagram of terminal downlink data passing through all protocol layers shown in Figure 1 is provided, and three Internet protocol (internet protocol, IP) data packets are given, respectively IP Data packet x, IP data packet y and IP data packet z, Fig. 2 shows the process of IP data packet transmission through each protocol layer. As shown in Figure 2, when the RLC layer transmits data packets to the MAC layer, the RLC entity can segment the RLC PDU according to the transmission instruction sent by the MAC entity, such as the two RLC PDU Segments in Figure 2 . Here the transfer instruction may indicate the transfer block size.

The data packet transmission method provided by the embodiment of the present invention can be applied to a communication system of a wireless network. Fig. 3 shows a schematic structural diagram of the communication system. As shown in FIG. 3 , the communication system 10 includes an RLC entity 101 and a MAC entity 102 . Wherein, the RLC entity 101 and the MAC entity 102 communicate through the network protocol shown in FIG. 1 .

The RLC entity 101 may be the RLC entity of the terminal or the RLC entity of the base station, which is not limited in this embodiment.

Correspondingly, the MAC entity 102 may be the MAC entity of the terminal or the MAC entity of the base station, which is not limited in this embodiment.

The RLC entity 101 is used for the transmission instruction sent by the MAC entity 102; for the current data packet to be transmitted in a plurality of data packets to be transmitted, the RLC entity 101 determines the size of the current data packet to be transmitted; when the size of the current data packet to be transmitted is greater than the transmission In the case of the block size, if there is a target data packet among the multiple data packets to be transmitted, the RLC entity 101 sends the target data packet to the MAC entity.

The data packet transmission method provided by the embodiment of the present invention will be specifically described below in conjunction with the accompanying drawings.

As shown in Figure 4, the data packet transmission method provided by the embodiment of the present invention includes the following S201-S205:

S201. The RLC entity receives the transmission instruction sent by the MAC entity.

Wherein, the transmission instruction is used to instruct the RLC entity to transmit the data packet to the MAC entity; the transmission instruction includes the size of the transmission block.

It should be noted that in order to reduce the delay in 5GNR, the RLC entity can generate an RLC PDU (including header information) immediately after receiving an RLC SDU from the PDCP layer before receiving the transmission instruction sent by the MAC entity. And stored in the buffer (buffer) waiting to be sent, that is, each RLC SDU corresponds to one RLC PDU.

After the RLC entity receives the transmission instruction sent by the MAC entity, according to the transmission block size indicated in the transmission instruction, and according to the order in which each RLC PDU is generated, these RLC PDUs are sequentially filled into the transmission block and sent.

The working modes of the RLC entity include: transparent mode (transparent mode, TM), unacknowledged mode (unacknowledged mode, UM) and acknowledged mode (acknowledged mode, AM).

For UM and AM modes, the transport block size indicated by the MAC entity may not be able to ensure that each RLC PDU is completely sent out, that is, if a certain RLC PDU cannot be completely filled into the transport block, the RLC PDU needs to be divided Segment, and regenerate the RLC header and new RLC PDU, fill part of the segmented RLC PDU into the transmission block and send it, and the unsent part of the RLC PDU needs to wait for the arrival of the next transmission command before sending . For the TM mode, this mode is generally used for small signaling packets, and the transport block size indicated by the MAC entity can generally ensure that the RLC PDUs generated in this mode are completely sent out.

S202. For the current data packet to be transmitted among the multiple data packets to be transmitted, the RLC entity determines the size of the current data packet to be transmitted.

As a possible implementation manner, after receiving the transmission instruction sent by the MAC entity, the RLC entity determines the size of the current data packet to be transmitted from the multiple data packets to be transmitted in the buffer.

Exemplarily, there are 3 data packets to be transmitted in the buffer of the RLC entity, namely RLC PDU1, RLC PDU2, and RLC PDU3; the RLC entity is currently preparing to transmit the RLC PDU1, and the RLC entity determines the size of the RLC PDU1.

S203. The RLC entity judges whether the size of the currently to-be-transmitted data packet is greater than the size of the transmission block.

As a possible implementation, the RLC entity compares the determined size of the currently to-be-transmitted data packet with the size of the transmission block in the transmission command sent by the MAC entity, and determines whether the size of the current to-be-transmitted data packet is greater than the size of the transmission block.

Exemplarily, if the size of the currently to-be-transmitted data packet RLC PDU1 is 8Kb, and the size of the transport block is 4Kb, the RLC entity determines that the size of the current to-be-transmitted data packet is greater than the size of the transport block.

S204. In the case that the size of the current data packet to be transmitted is greater than the size of the transmission block, the RLC entity sequentially determines the sizes of other data packets to be transmitted, and judges whether there is a target data packet.

Wherein, the size of the target data packet is smaller than or equal to the size of the transmission block.

As a possible implementation manner, when the size of the currently to-be-transmitted data packet is greater than the size of the transmission block, the RLC entity sequentially determines the sizes of other to-be-transmitted data packets in the buffer. For each determined data packet to be transmitted, the RLC entity compares the size of the data packet with the size of the transmission block to determine whether the size of the data packet is less than or equal to the size of the transmission block; the target data packet; otherwise, the RLC entity judges that there is no target data packet.

Exemplarily, there are three data packets to be transmitted in the buffer of the RLC entity, which are RLC PDU1, RLC PDU2, and RLC PDU3 respectively; the size of the current data packet RLC PDU1 to be transmitted is greater than the size of the transmission block, and the RLC entity sequentially determines RLC PDU2 and RLC PDU3 and compare the size of RLC PDU2 and RLC PDU3 with the size of the transport block; if the size of RLC PDU2 or RLC PDU3 is less than or equal to the size of the transport block, the RLC entity determines that there is a target data packet.

S205. If there is a target data packet among the multiple data packets to be transmitted, the RLC entity sends the target data packet to the MAC entity.

Exemplarily, there are three data packets to be transmitted in the buffer of the RLC entity, which are RLC PDU1, RLC PDU2, and RLC PDU3 respectively; the size of the current data packet RLC PDU1 to be transmitted is greater than the size of the transmission block, and the RLC entity sequentially determines RLC PDU2 and RLC PDU3 , and the size of RLC PDU2 is still larger than the transport block size, but the size of RLC PDU3 is smaller than the transport block size, then the RLC entity uses RLC PDU3 as the target data packet, and sends the data packet to the MAC entity.

In one design, when the size of the current data packet to be transmitted is greater than the size of the transmission block, if there is no target data packet among the multiple data packets to be transmitted, as shown in FIG. 5 , the above S205 provided by the embodiment of the present invention Afterwards, the following S301-S307 are also included.

S301. The RLC entity acquires a polling value of a data packet currently to be transmitted.

Wherein, the polling value of the currently to-be-transmitted data packet is the number of times the RLC entity determines the size of the current to-be-transmitted data packet.

It should be noted that an initial polling value is set for each to-be-transmitted data packet in the RLC entity buffer. The initial polling value is preset by the operation and maintenance personnel. Generally, the operation and maintenance personnel set the initial polling value as Nseg=0.

For any current data packet to be transmitted, after the RLC entity determines the size of the data packet, the RLC entity updates the polling value of the data packet according to a preset increment. The preset increment is preset by the operation and maintenance personnel. Generally, the operation and maintenance personnel set the preset increment to 1, that is, each time the RLC entity determines the size of the data packet, the polling value corresponding to the data packet is increased by 1.

As a possible implementation, when the size of the current data packet to be transmitted is greater than the size of the transmission block, and there is no target data packet among the multiple data packets to be transmitted, the RLC entity obtains the polling value of the current data packet to be transmitted .

S302. The RLC entity judges whether the polling value of the currently to-be-transmitted data packet is greater than or equal to a first threshold.

It should be noted that the first threshold is pre-set by the operation and maintenance personnel in the RLC entity.

As a possible implementation manner, the RLC entity compares the polling value of the current data packet to be transmitted with the first threshold, and determines whether the polling value of the current data packet to be transmitted is greater than or equal to the first threshold.

S303. When the polling value of the current data packet to be transmitted is greater than or equal to the first threshold, the RLC entity sends the current data packet to be transmitted to the MAC entity.

Exemplarily, the polling value of the current data packet to be transmitted is 5, and the first threshold is 5, indicating that the polling value of the current data packet to be transmitted is equal to the first threshold, and the RLC entity sends the current data packet to be transmitted to the MAC entity .

It can be understood that the target data packet does not exist in the buffer of the RLC entity at this time, even if the data packet is sent in segments, it will not affect the target data packet, and the current data packet to be transmitted has been polled multiple times, so that Make sure that packet is also sent successfully.

S304. In the case that the polling value of the current data packet to be transmitted is smaller than the first threshold, the RLC entity obtains the transmission duration.

Wherein, the transmission duration is the duration obtained by the RLC entity starting timing in response to the transmission instruction.

It should be noted that the operation and maintenance personnel set a timer in the RLC entity in advance, and the timer starts counting when the RLC entity receives the transmission instruction sent by the MAC.

As a possible implementation manner, when the polling value of the currently to-be-transmitted data packet is smaller than the first threshold, the RLC entity obtains the transmission duration from the timer.

S305. The RLC entity determines whether the transmission duration is greater than or equal to a second threshold.

It should be noted that the second threshold is pre-set by the operation and maintenance personnel in the RLC entity.

As a possible implementation manner, the RLC entity compares the transmission duration with the second threshold, and determines whether the transmission duration is greater than or equal to the second threshold.

For example, if the transmission duration obtained by the RLC entity is 9ms and the second threshold is 10ms, it is judged that the transmission duration is less than the second threshold; the transmission duration obtained by the RLC entity is 10ms, and the second threshold is 9ms, then it is judged that the transmission duration is longer than the second threshold threshold.

S306. In the case that the transmission duration is greater than or equal to the second threshold, the RLC entity sends the current data packet to be transmitted to the MAC entity.

As a possible implementation, when the transmission duration is greater than or equal to the second threshold, the RLC entity sends the current data packet to be transmitted to the MAC entity, and resets the transmission duration to zero, and waits until the next transmission instruction from the MAC is received. Start timing again.

It is understandable that the target data packet does not exist in the RLC entity buffer at this time, even if the data packet is sent in segments, it will not affect the target data packet, and the transmission time has exceeded the preset time length, which can be reduced as much as possible transmission time.

S307. In the case that the transmission duration is less than the second threshold, the RLC entity determines the next data packet to be transmitted located in the current data packet in the buffer as the current data packet to be transmitted, and continues to execute S301-S307.

The technical solutions provided by the above embodiments bring at least the following beneficial effects: after the RLC entity receives the transmission instruction sent by the MAC entity for instructing the RLC entity to transmit data packets to the MAC entity, it determines the current data packet to be transmitted among the multiple data packets to be transmitted. The size of the data packet to be transmitted; since the transmission instruction includes the size of the transmission block, if the size of the current data packet to be transmitted is greater than the size of the transmission block, if there are targets whose size is smaller than or equal to the transmission block among the multiple data packets to be transmitted data packet, send the target data packet to the MAC entity instead of directly sending the current data packet to be transmitted to the MAC entity. In this way, the impact on the data packets to be transmitted whose size is smaller than or equal to the size of the transmission block after the current data packet to be transmitted is segmented due to the size of the current data packet to be transmitted being larger than the size of the transmission block can be reduced, thereby avoiding a vicious circle and further This causes a problem of low utilization of computing resources at the receiving end.

The foregoing mainly introduces the solutions provided by the embodiments of the present invention from the perspective of methods. In order to realize the above functions, it includes corresponding hardware structures and/or software modules for performing various functions. Those skilled in the art should easily realize that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software drives hardware depends on the specific application and design constraints of the technical solution. Skilled artisans may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present invention.

In the embodiment of the present invention, the functional modules of the above-mentioned device can be divided according to the above-mentioned method examples. For example, each functional module can be divided corresponding to each function, or two or more functions can be integrated into one processing module. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software function modules. Optionally, the division of modules in this embodiment of the present invention is schematic, and is only a logical function division, and there may be another division manner in actual implementation.

FIG. 6 is a schematic structural diagram of an RLC entity provided by an embodiment of the present invention. As shown in FIG. 6 , the RLC entity 40 is configured to implement the above data packet transmission method, and the RLC entity 40 includes a receiving unit 401 , a determining unit 402 , a judging unit 403 and a sending unit 404 .

The receiving unit 401 is configured to receive a transmission instruction sent by a medium access control MAC entity; the transmission instruction is used to instruct the RLC entity to transmit a data packet to the MAC entity; the transmission instruction includes a transmission block size. For example, as shown in FIG. 4 , the receiving unit 401 may be configured to perform S201.

The determining unit 402 is configured to determine the size of the current data packet to be transmitted for the current data packet to be transmitted in the plurality of data packets to be transmitted. For example, as shown in FIG. 4 , the receiving unit 401 may be configured to perform S202.

The judging unit 403 is configured to judge whether the size of the currently to-be-transmitted data packet is larger than the size of the transmission block. For example, as shown in FIG. 4 , the receiving unit 401 may be configured to perform S203.

The judging unit 403 is further configured to sequentially determine the sizes of other data packets to be transmitted and judge whether there is a target data packet if the size of the current data packet to be transmitted is greater than the size of the transmission block. For example, as shown in FIG. 4 , the receiving unit 401 may be configured to perform S204.

The sending unit 404 is used to send the target data packet to the MAC entity if the size of the current data packet to be transmitted is greater than the size of the transmission block, if there is a target data packet in a plurality of data packets to be transmitted; the size of the target data packet is less than Or equal to the transport block size. For example, as shown in FIG. 4, the receiving unit 401 may be configured to perform S205.

Optionally, the RLC entity 40 further includes an acquiring unit 405 .

Acquisition unit 405, used to obtain the polling value of the current data packet to be transmitted if the size of the current data packet to be transmitted is greater than the size of the transmission block, if there is no target data packet in the multiple data packets to be transmitted; The polling value of the transmitted data packet is the number of times the RLC entity determines the size of the currently to-be-transmitted data packet.

The sending unit 404 is further configured to send the current data packet to be transmitted to the MAC entity when the polling value of the current data packet to be transmitted is greater than or equal to the first threshold.

Optionally, the RLC entity 40 further includes an update unit 406 .

The updating unit 406 is configured to update the polling value of the current data packet to be transmitted according to a preset increment.

Optionally, the acquiring unit 405 is further configured to acquire the transmission duration when the polling value of the current data packet to be transmitted is less than the first threshold; the transmission duration is the duration obtained by the RLC entity starting timing in response to the transmission instruction.

The sending unit 404 is further configured to send the currently to-be-transmitted data packet to the MAC entity when the transmission duration is greater than or equal to the second threshold.

In the case that the functions of the above-mentioned integrated modules are implemented in the form of hardware, the embodiment of the present invention provides a schematic diagram of a possible structure of an RLC entity. The RLC entity is used to execute the data packet transmission method in the above embodiments. As shown in FIG. 7 , the RLC entity 50 includes a processor 501 , a memory 502 and a bus 503 . The processor 501 and the memory 502 may be connected through a bus 503 .

The processor 501 is the control center of the RLC entity, and may be one processor, or may be a general term for multiple processing elements. For example, the processor 501 may be a general-purpose central processing unit (central processing unit, CPU), or other general-purpose processors. Wherein, the general-purpose processor may be a microprocessor or any conventional processor.

As an embodiment, the processor 501 may include one or more CPUs, such as CPU 0 and CPU 1 shown in FIG. 7 .

The memory 502 may be a read-only memory (read-only memory, ROM) or other types of static storage devices that can store static information and instructions, a random access memory (random access memory, RAM) or other types that can store information and instructions The dynamic storage device can also be an electrically erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), a magnetic disk storage medium or other magnetic storage devices, or can be used to carry or store instructions or data structures desired program code and any other medium that can be accessed by a computer, but not limited thereto.

As a possible implementation manner, the memory 502 may exist independently of the processor 501, and the memory 502 may be connected to the processor 501 through the bus 503, and is used for storing instructions or program codes. When the processor 501 invokes and executes the instructions or program codes stored in the memory 502, the data packet transmission method provided by the embodiment of the present invention can be realized.

In another possible implementation manner, the memory 502 may also be integrated with the processor 501 .

The bus 503 may be an Industry Standard Architecture (Industry Standard Architecture, ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (Extended Industry Standard Architecture, EISA) bus, etc. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 7 , but it does not mean that there is only one bus or one type of bus.

It should be noted that the structure shown in FIG. 7 does not limit the RLC entity 50 . In addition to the components shown in FIG. 7, the RLC entity 50 may include more or fewer components than shown, or combine certain components, or have a different arrangement of components.

As an example, with reference to FIG. 6 , the functions implemented by the receiving unit 401 , the determining unit 402 , the judging unit 403 and the sending unit 404 in the RLC entity 40 are the same as those of the processor 501 in FIG. 7 .

Optionally, as shown in FIG. 7 , the RLC entity 50 provided in this embodiment of the present invention may further include a communication interface 504 .

The communication interface 504 is used to connect with other devices through the communication network. The communication network may be Ethernet, wireless access network, wireless local area network (wireless local area networks, WLAN) and so on. The communication interface 504 may include a receiving unit for receiving data, and a sending unit for sending data.

In one design, in the electronic device provided by the embodiment of the present invention, the communication interface may also be integrated in the processor.

Fig. 8 shows another hardware structure of the RLC entity in the embodiment of the present invention. As shown in FIG. 8 , the RLC entity 60 may include a processor 601 and a communication interface 602 . Processor 601 is coupled with communication interface 602 .

For functions of the processor 601, reference may be made to the description of the processor 601 above. In addition, the processor 601 also has a storage function, and reference may be made to the function of the above-mentioned memory 502 .

The communication interface 602 is used to provide data to the processor 601 . The communication interface 602 may be an internal interface of the RLC entity, or an external interface of the RLC entity (equivalent to the communication interface 604).

It should be pointed out that the structure shown in FIG. 8 does not constitute a limitation on the RLC entity. Except for the components shown in FIG. 8, the RLC entity 60 may include more or less components than shown in the figure, or combine certain some components, or a different arrangement of components.

An embodiment of the present invention also provides a computer-readable storage medium, in which instructions are stored. When a computer executes the instructions, the computer executes each step in the method flow shown in the above-mentioned method embodiments.

An embodiment of the present invention provides a computer program product containing instructions, and when the instructions are run on a computer, the computer is made to execute the data packet transmission method in the above method embodiments.

Wherein, the computer-readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or device, or any combination thereof. More specific examples (non-exhaustive list) of computer readable storage media include: electrical connection having one or more wires, portable computer disk, hard disk. Random Access Memory (Random Access Memory, RAM), Read-Only Memory (Read-Only Memory, ROM), Erasable Programmable Read-Only Memory (Erasable Programmable Read Only Memory, EPROM), registers, hard disk, optical fiber, portable compact Disk read-only memory (Compact Disc Read-Only Memory, CD-ROM), an optical storage device, a magnetic storage device, or any other form of computer-readable storage medium in a suitable combination of the above, or values in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be a component of the processor. The processor and the storage medium may be located in an application specific integrated circuit (Application Specific Integrated Circuit, ASIC). In the embodiments of the present invention, a computer-readable storage medium may be any tangible medium containing or storing a program, and the program may be used by or in combination with an instruction execution system, apparatus or device.

Since the device, device, computer-readable storage medium, and computer program product in the embodiments of the present invention can be applied to the above methods, the technical effects that can be obtained can also refer to the above method embodiments, and the embodiments of the present invention are not described herein Let me repeat.

The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or replacements within the technical scope disclosed in the present invention shall be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (8)

1. A data packet transmission method, characterized in that being applied to a radio link control RLC entity, comprising: receiving a transmission instruction sent by a medium access control MAC entity; the transmission instruction is used to instruct the RLC entity to transmit a data packet to the MAC entity; the transmission instruction includes a transmission block size; For a current data packet to be transmitted among the plurality of data packets to be transmitted, determine the size of the current data packet to be transmitted; When the size of the current data packet to be transmitted is greater than the size of the transmission block, if there is a target data packet in the plurality of data packets to be transmitted, sending the target data packet to the MAC entity; the The size of the target data packet is less than or equal to the transport block size; If the size of the current data packet to be transmitted is greater than the size of the transmission block, if the target data packet does not exist in the plurality of data packets to be transmitted, then obtain the polling of the current data packet to be transmitted value; the polling value of the current data packet to be transmitted is the number of times the RLC entity performs the determination of the size of the current data packet to be transmitted; the polling value of the current data packet to be transmitted is greater than or equal to the first In the case of a threshold value, send the currently to-be-transmitted data packet to the MAC entity. 2. The data packet transmission method according to claim 1, wherein, after determining the size of the current data packet to be transmitted, the method further comprises: Updating the polling value of the currently to-be-transmitted data packet according to a preset increment. 3. The data packet transmission method according to claim 1 or 2, wherein the method further comprises: When the polling value of the current data packet to be transmitted is less than the first threshold, obtain a transmission duration; the transmission duration is the duration obtained by the RLC entity starting timing in response to the transmission instruction; When the transmission duration is greater than or equal to a second threshold, the currently to-be-transmitted data packet is sent to the MAC entity. 4. A radio link control RLC entity, characterized in that, comprises a receiving unit, a determining unit, a judging unit and a sending unit; The receiving unit is configured to receive a transmission instruction sent by a medium access control MAC entity; the transmission instruction is used to instruct the RLC entity to transmit a data packet to the MAC entity; the transmission instruction includes a transmission block size; The determining unit is configured to determine the size of the current data packet to be transmitted for the current data packet to be transmitted among the plurality of data packets to be transmitted; The judging unit is configured to judge whether the size of the current data packet to be transmitted is larger than the size of the transmission block; The judging unit is further configured to sequentially determine the size of other data packets to be transmitted and judge whether there is a target data packet if the size of the current data packet to be transmitted is greater than the size of the transmission block; The sending unit is configured to, when the size of the current data packet to be transmitted is greater than the size of the transmission block, if there is a target data packet in the plurality of data packets to be transmitted, send the MAC entity the The target data packet; the size of the target data packet is less than or equal to the transmission block size; The RLC entity also includes an acquisition unit; The obtaining unit is configured to obtain the current data packet if the size of the current data packet to be transmitted is greater than the size of the transmission block, if the target data packet does not exist in the plurality of data packets to be transmitted. The polling value of the data packet to be transmitted; the polling value of the current data packet to be transmitted is the number of times the RLC entity performs the determination of the size of the current data packet to be transmitted; The sending unit is further configured to send the current data packet to be transmitted to the MAC entity when the polling value of the current data packet to be transmitted is greater than or equal to a first threshold. 5. The RLC entity according to claim 4, wherein the RLC entity further comprises an updating unit; The updating unit is configured to update the polling value of the currently to-be-transmitted data packet according to a preset increment. 6. The RLC entity according to claim 4 or 5, wherein the acquiring unit is further configured to: acquire Transmission duration; the transmission duration is the duration obtained by the RLC entity starting timing in response to the transmission instruction; The sending unit is further configured to send the data packet currently to be transmitted to the MAC entity when the transmission duration is greater than or equal to a second threshold. 7. A radio link control RLC entity, characterized in that it includes: a processor and a memory; wherein the memory is used to store one or more programs, and the one or more programs include computer-executable instructions, when the When the RLC entity is running, the processor executes the computer-executed instructions stored in the memory, so that the RLC entity executes the data packet transmission method according to any one of claims 1-3. 8. A computer-readable storage medium, wherein instructions are stored in the computer-readable storage medium, and when the instructions are run on the radio link control RLC entity, the radio link control RLC entity is made Executing the data packet transmission method according to any one of claims 1-3.