CN114629598A - Method and device for retransmitting acknowledged mode data of radio link control layer - Google Patents
Method and device for retransmitting acknowledged mode data of radio link control layer Download PDFInfo
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- CN114629598A CN114629598A CN202210072081.0A CN202210072081A CN114629598A CN 114629598 A CN114629598 A CN 114629598A CN 202210072081 A CN202210072081 A CN 202210072081A CN 114629598 A CN114629598 A CN 114629598A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0033—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the transmitter
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
Abstract
The invention provides a method and a device for retransmitting acknowledged mode data of a wireless link control layer, wherein the method comprises the following steps: sending a data packet to a receiving end; receiving confirmation information returned by the receiving terminal based on the data packet; determining the delay time corresponding to the data packet which is not successfully sent according to the confirmation information; and retransmitting the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time. The invention determines the delay time based on the confirmation information returned by the receiving end, and retransmits the data packet which is not successfully transmitted according to the delay time, so as to reduce the influence of time correlation, improve the success rate of retransmission and the transmission efficiency, improve the network throughput, improve the adaptability to the scenes which continuously appear in the network transmission process, and ensure the communication service quality.
Description
Technical Field
The present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for data retransmission in acknowledged mode at a radio link control layer.
Background
In the existing mobile communication system, in order to ensure the quality of communication service, a Link Control protocol is generally used, and Radio Link Control (RLC) layers in the LTE system are widely applied, and include three data transmission modes, namely, a Transparent Mode (TM), an Unacknowledged Mode (UM), and an Acknowledged Mode (AM). The RLC layer is located between the Service layer and the MAC layer, and has the main functions of segmenting/concatenating and reconstructing Service Data Units (SDU), ARQ error correction, Protocol Data Unit (PDU) reordering, duplicate packet detection, PDU re-segmentation, and the like. The RLC layer AM mode realizes the retransmission function through ARQ error correction, and is widely applied to communication scenes needing higher communication quality.
The RLC layer AM mode is divided into two parts of a receiving end and a sending end, the receiving end and the sending end respectively store a receiving window and a sending window, each PDU received/sent has a corresponding Sequence Number (SN), if the SN of the PDU is in the window corresponding to the receiving/sending, the PDU can be normally received/sent, otherwise, the PDU is discarded. However, in the moving process of the retransmission method, for example, the receiving end device is shielded by a large building, passes through an interference area or passes through a tunnel in the moving process, the retransmission failure rate is high, and the orifice resource is wasted.
Disclosure of Invention
The invention provides a method and a device for retransmitting acknowledged mode data of a wireless link control layer, which are used for solving the defect of lower success probability of the acknowledged mode data retransmission of the wireless link control layer in the prior art, improving the retransmission success rate and the transmission efficiency and ensuring the communication service quality.
The invention provides a method for retransmitting acknowledged mode data of a wireless link control layer, which comprises the following steps: sending a data packet to a receiving end; receiving confirmation information returned by the receiving end based on the data packet; determining the delay time corresponding to the unsent successful data packet according to the confirmation information; and retransmitting the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
According to the method for retransmitting acknowledged mode data of a radio link control layer provided by the invention, the determining of the delay time according to the acknowledgement information comprises the following steps: obtaining unsuccessfully sent data packets according to the confirmation information; obtaining corresponding retransmission times according to the unsuccessfully transmitted data packet; and determining the delay time according to the retransmission times.
According to the method for retransmitting acknowledged mode data of a radio link control layer provided by the invention, the step of determining the delay time corresponding to the data packet which is not successfully transmitted according to the retransmission times comprises the following steps: and obtaining the delay time based on the Fibonacci sequence according to the retransmission times.
According to the method for retransmitting acknowledged mode data of a radio link control layer provided by the invention, the step of determining the delay time corresponding to the data packet which is not successfully sent according to the retransmission times comprises the following steps: acquiring retransmission delay time corresponding to each previous retransmission; and according to the retransmission delay time corresponding to each retransmission, obtaining the sum of the retransmission delay time corresponding to the retransmission times in the previous two retransmissions by using the retransmission times as the delay time corresponding to the unsent successful data packet.
According to the method for retransmitting acknowledged mode data of the radio link control layer provided by the invention, the delay time is less than or equal to 55.
According to the method for retransmitting acknowledged mode data of a radio link control layer provided by the invention, the acknowledgement information is information which is generated by the receiving end based on the received data packet and is used for confirming that the corresponding data packet is successfully received.
The invention also provides a device for retransmitting acknowledged mode data of a radio link control layer, which comprises: the data sending module sends a data packet to a receiving end; the data receiving module is used for receiving confirmation information returned by the receiving end based on the data packet; the delay setting module is used for determining the delay time corresponding to the data packet which is not successfully sent according to the confirmation information; and the data retransmission module retransmits the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
The present invention also provides an electronic device, comprising a memory, a processor and a computer program stored in the memory and operable on the processor, wherein the processor implements the steps of any of the above methods for retransmission of acknowledged mode data at the rlc layer when executing the program.
The present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements the steps of the method for retransmission of acknowledged mode data in a radio link control layer as described in any one of the above.
The present invention also provides a computer program product comprising a computer program which, when executed by a processor, performs the steps of the method for retransmission of acknowledged mode data of a radio link control layer as described in any of the above.
The method and the device for retransmitting the acknowledged mode data of the wireless link control layer determine the delay time based on the acknowledgement information returned by the receiving end, retransmit the data packet which is not successfully transmitted according to the delay time, reduce the influence of time correlation, improve the success rate of retransmission and transmission efficiency, improve the network throughput, improve the adaptability to the scenes which continuously appear in the network transmission process and ensure the communication service quality.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 is a flowchart illustrating a method for retransmission of acknowledged mode data at a radio link control layer according to the present invention;
FIG. 2 is a second flowchart of a method for acknowledged mode data retransmission at a radio link control layer according to the present invention;
FIG. 3 is a schematic structural diagram of a retransmission apparatus for acknowledged mode data of a radio link control layer according to the present invention;
FIG. 4 is a schematic diagram of a retransmission process of a data retransmission apparatus in acknowledged mode at radio link control layer according to the present invention;
fig. 5 is a schematic structural diagram of an electronic device provided in the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Fig. 1 shows a schematic flow chart of a method for retransmitting acknowledged mode data of a radio link control layer according to the present invention, the method comprising:
s11, sending data packets to a receiving end;
s12, receiving confirmation information returned by the receiving terminal based on the data packet;
s13, determining the delay time corresponding to the data packet which is not successfully sent according to the confirmation information;
and S14, retransmitting the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
It should be noted that the execution main body of the data retransmission method in the acknowledged mode of the Radio Link Control layer may be a sending end of the Radio Link Control layer (RLC for short), and the data retransmission method in the acknowledged mode of the Radio Link Control layer may be applied to a 5G system.
S1N in this specification does not represent the sequence of the rlc mode data retransmission method, and the rlc mode data retransmission method of the present invention is described below with reference to fig. 2 in detail.
Step S11, the packet is sent to the receiving end.
In the embodiment, the Data packet includes RLC AMD (AM Data, AMD for short) and/or Protocol Data Unit (PDU for short). In addition, the number of the data packets is at least one, and each data packet has a corresponding sequence number, so that a subsequent receiving end can distinguish successfully received data packets from unsuccessfully received data packets after receiving the data packets.
Step S12, receiving the acknowledgement information returned by the receiving end based on the data packet.
In this embodiment, the acknowledgement information is information that the receiving end generates, based on the received data packet, information for acknowledging that the corresponding data packet is successfully received.
In an optional embodiment, after the sending end sends the data packet to the receiving end, the method further includes: the receiving end receives the data packet, generates confirmation information according to the received data packet and returns the confirmation information to the sending end; and the sending end receives the confirmation information returned by the receiving end. It should be noted that the acknowledgement information is used to feed back information of a successfully received data packet, so that a subsequent sending end confirms the unsuccessfully sent data packet based on the acknowledgement information, and retransmits the unsuccessfully sent data packet.
Step S13, determining the delay time corresponding to the unsuccessful packet according to the acknowledgement information.
In this embodiment, determining the delay time according to the acknowledgement information includes: obtaining unsuccessfully sent data packets according to the confirmation information; obtaining corresponding retransmission times according to the unsuccessfully transmitted data packet; and determining the delay time according to the retransmission times.
Specifically, first, a packet that has not been successfully transmitted is obtained based on the acknowledgement information. It should be noted that, since the acknowledgement information is used for feeding back the information of the successfully received data packets, the sending end confirms, based on the acknowledgement information, that the successfully sent data packets are not sent in the data packets that are sent to the receiving end first, so as to retransmit the data packets to the receiving end subsequently as the retransmitted data packets.
And secondly, obtaining the retransmission times according to the unsuccessfully transmitted data packet. In this embodiment, obtaining the retransmission times according to the unsuccessfully transmitted data packet includes: and obtaining the retransmission times according to the unsuccessfully transmitted data packet and the historical transmission times, wherein the retransmission times are equal to the historical transmission times minus one.
And finally, determining the delay time according to the retransmission times. It should be noted that, determining the delay time corresponding to the unsent successful data packet according to the retransmission times includes: and obtaining the delay time based on the Fibonacci sequence according to the retransmission times.
In an optional embodiment, determining the delay time corresponding to the unsuccessful data packet according to the number of retransmissions comprises: acquiring retransmission delay time corresponding to each previous retransmission; and according to the retransmission delay time corresponding to each retransmission in advance, obtaining the sum of the retransmission delay time corresponding to the retransmission times in the previous two retransmissions by using the retransmission times as the delay time corresponding to the unsent successful data packet.
The delay time is expressed as:
Xn＝xn-1+xn-2
where n denotes the number of retransmissions, xnAnd indicating the delay time corresponding to the nth retransmission data packet.
In an alternative embodiment, the delay time is less than or equal to 55.
For example, when the first retransmission does not send a successful data packet, the first retransmission delay time is 0; when the data packet is retransmitted for the second time and is not successfully transmitted, the second retransmission delay time is 1; when the data packet is retransmitted for the third time and is not successfully transmitted, the third retransmission delay time is 1; and when the successful data packet is not transmitted in the fourth retransmission, the fourth retransmission delay time is 2, and so on, so that the nth retransmission delay time is equal to the sum of the previous two retransmission delay times, and the maximum retransmission delay time is not more than 55.
And step S14, retransmitting the data packet which is not successfully transmitted to the receiving end according to the delay time.
It should be noted that, after retransmitting the corresponding data packet that is not successfully transmitted to the receiving end according to the delay time, the receiving end receives the corresponding data packet again and returns re-confirmation information to the transmitting end to confirm whether the retransmitted data packet is received, the transmitting end determines whether the corresponding data packet needs to be retransmitted continuously according to the re-confirmation information, and the above-mentioned procedure is repeated until the receiving end confirms that the corresponding data packet is received.
In an alternative embodiment, referring to fig. 2, a method for data retransmission in acknowledged mode of radio link control layer includes:
s21, the sending end sends data packet to the receiving end;
s22, the receiving end receives the data packet, and generates confirmation information based on the received data packet and returns the confirmation information to the sending end;
s23, the sending end receives the confirmation information returned by the receiving end, and determines the delay time corresponding to the data packet which is not sent successfully according to the confirmation information;
and S24, the sending end retransmits the corresponding data packet which is not successfully sent to the receiving end according to the delay time.
It should be noted that S2N in this specification does not represent the order of the data retransmission method in the acknowledged mode of the radio link control layer, and the data retransmission method in the acknowledged mode of the radio link control layer according to the present invention is specifically described below.
In step S21, the sender sends a packet to the receiver.
In this embodiment, the number of the data packets is at least one, and each data packet has a corresponding sequence number, so that the subsequent receiving end can distinguish the successfully received data packet from the unsuccessfully received data packet after receiving the data packet.
In step S22, the receiving end receives the data packet, and generates acknowledgement information based on the received data packet and returns the acknowledgement information to the sending end.
In this embodiment, after the sending end sends the data packet to the receiving end, the method further includes: a receiving end receives a data packet; generating confirmation information according to the received data packet; and returning the confirmation information to the sending end. It should be noted that the acknowledgement information is used to feed back information of a successfully received data packet, so that a subsequent sending end confirms the unsuccessfully sent data packet based on the acknowledgement information, and retransmits the unsuccessfully sent data packet.
And step S23, the sending end receives the confirmation information returned by the receiving end, and determines the delay time corresponding to the data packet which is not sent successfully according to the confirmation information.
In this embodiment, after receiving the acknowledgement information, the sending end determines the delay time according to the acknowledgement information. It should be noted that the acknowledgement information is information that the receiving end generates to confirm that the corresponding data packet is successfully received based on the received data packet.
Specifically, determining the delay time according to the confirmation information includes: obtaining unsuccessfully sent data packets according to the confirmation information; obtaining corresponding retransmission times according to the unsuccessfully transmitted data packet; and determining the delay time according to the retransmission times. The detailed steps can refer to the above description, and are not repeated herein.
And step S24, the sending end retransmits the data packet which is not successfully sent to the receiving end according to the delay time.
In this embodiment, after retransmitting, by the sending end, the corresponding data packet that is not successfully sent to the receiving end according to the delay time, the method further includes: and the receiving end receives the corresponding data packet again, returns re-confirmation information to the sending end to confirm whether the retransmitted data packet is received or not, the sending end determines whether the corresponding data packet needs to be retransmitted or not according to the re-confirmation information, and the process is repeated until the receiving end confirms that the corresponding data packet is received.
In summary, in the embodiments of the present invention, the delay time is determined based on the acknowledgement information returned by the receiving end, so as to retransmit the data packet that is not successfully transmitted according to the delay time, thereby reducing the influence of time correlation, improving the success rate of retransmission and transmission efficiency, improving the throughput of the network, improving the adaptability to the scenes that continuously appear in the network transmission process, and ensuring the quality of communication service.
The following describes the rlc ack mode data retransmission apparatus provided in the present invention, and the rlc ack mode data retransmission apparatus described below and the rlc ack mode data retransmission method described above may be referred to in correspondence with each other.
Fig. 3 shows a schematic structural diagram of a data retransmission apparatus in acknowledged mode of a radio link control layer, the apparatus includes a transmitting end, wherein:
a data sending module 31, which sends data packets to a receiving end;
a data receiving module 32, which receives the acknowledgement information returned by the receiving end based on the data packet;
the delay setting module 33 determines the delay time corresponding to the data packet which is not successfully transmitted according to the confirmation information;
and the data retransmission module 34 retransmits the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
In this embodiment, the data sending module 31 is configured to send a data packet to a receiving end. It should be noted that the Data packet includes RLC AMD (AM Data, AMD for short) and/or Protocol Data Unit (PDU for short). In addition, the number of the data packets is at least one, and each data packet has a corresponding sequence number, so that a subsequent receiving end can distinguish successfully received data packets from unsuccessfully received data packets after receiving the data packets.
And the data receiving module 32 is configured to receive acknowledgement information returned by the receiving end based on the data packet. In this embodiment, the acknowledgement information is information that the receiving end generates, based on the received data packet, information for acknowledging that the corresponding data packet is successfully received.
In an optional embodiment, the apparatus further comprises a receiving end for receiving the data packet and returning the acknowledgement information. Specifically, the receiving end includes: a receiving unit that receives a packet; an information generating unit that generates acknowledgement information from the received packet; and the information returning unit returns the confirmation information to the sending end. It should be noted that the acknowledgement information is used to feed back information of a successfully received data packet, so that a subsequent sending end confirms the unsuccessfully sent data packet based on the acknowledgement information, and retransmits the unsuccessfully sent data packet.
The delay setting module 33 includes: a retransmission data packet obtaining unit which obtains the data packet which is not successfully sent according to the confirmation information; a retransmission number obtaining unit for obtaining the corresponding retransmission number according to the unsuccessfully transmitted data packet; and the delay time determining unit determines the delay time according to the retransmission times.
Specifically, the retransmission number acquisition unit includes: and the retransmission times acquiring subunit is used for acquiring the retransmission times according to the unsuccessfully transmitted data packet and the historical transmission times, wherein the retransmission times are equal to the historical transmission times minus one.
In one possible implementation manner, the delay time determination unit includes: and the time determining subunit obtains the delay time based on the Fibonacci sequence according to the retransmission times.
In another possible implementation manner, the delay time determination unit includes: the delay time acquisition subunit acquires retransmission delay time corresponding to each previous retransmission; and the delay time determining subunit obtains the sum of the retransmission delay time corresponding to the retransmission times in the previous two times as the delay time corresponding to the unsent successful data packet by utilizing the retransmission times according to the retransmission delay time corresponding to each retransmission in advance.
It should be noted that the delay time is less than or equal to 55.
And a data retransmission module 34, configured to retransmit, to the receiving end, a corresponding data packet that is not successfully transmitted according to the delay time. It should be noted that, after the data retransmission module 34 retransmits the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time, the receiving end receives the corresponding data packet again and returns the re-confirmation information to the data transmission module 31, the data reception module 32 confirms whether the receiving end receives the retransmitted data packet according to the re-confirmation information, determines whether the re-confirmation information is needed to determine whether the corresponding data packet needs to be retransmitted continuously, and repeats the above process until the receiving end confirms that the corresponding data packet is received.
Fig. 4 is a schematic diagram illustrating a retransmission process of an apparatus for retransmitting acknowledged mode data of a radio link control layer, the apparatus comprising a transmitting end and a receiving end, wherein:
a sending end sends a data packet to a receiving end;
the receiving end receives the data packet, and generates confirmation information based on the received data packet and returns the confirmation information to the sending end;
a sending end receives confirmation information returned by a receiving end and determines the delay time corresponding to a data packet which is not sent successfully according to the confirmation information;
and the transmitting end retransmits the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
In this embodiment, the sending end includes: the data packet sending unit sends a data packet to the receiving end; the information receiving unit is used for receiving the confirmation information returned by the sending end; a delay time determining unit for determining the delay time corresponding to the unsuccessful data packet according to the confirmation information; and the retransmission subunit retransmits the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
It should be noted that the number of the data packets sent by the data packet sending unit to the receiving end is at least one, and each data packet has a corresponding sequence number, so that the subsequent receiving end can distinguish the successfully received data packet from the unsuccessfully received data packet after receiving the data packet. In addition, the acknowledgement information is information that the receiving end generates to confirm that the corresponding data packet is successfully received based on the received data packet.
Specifically, the delay time determination unit includes: the data packet to be retransmitted acquiring subunit acquires the data packet which is not successfully transmitted according to the confirmation information; a retransmission times obtaining subunit, for obtaining the corresponding retransmission times according to the unsuccessfully transmitted data packet; and the delay time determining subunit determines the delay time according to the retransmission times.
In an optional embodiment, after the retransmitting sub-unit retransmits, to the receiving end, the corresponding data packet that is not successfully transmitted according to the delay time, the method further includes: and the receiving end receives the corresponding data packet again, returns re-confirmation information to the sending end to confirm whether the retransmitted data packet is received or not, the sending end determines whether the corresponding data packet needs to be retransmitted or not according to the re-confirmation information, and the process is repeated until the receiving end confirms that the corresponding data packet is received.
In addition, the receiving end includes: the data packet receiving unit is used for receiving the data packet sent by the sending end; an information confirmation unit for generating confirmation information according to the received data packet; and the information returning unit returns the confirmation information to the sending end.
In summary, in the embodiments of the present invention, the delay setting module determines the delay time based on the acknowledgement information returned by the receiving end, so as to utilize the data retransmission module to retransmit the data packet that is not successfully transmitted according to the delay time, thereby reducing the influence of time correlation, improving the success rate of retransmission and transmission efficiency, improving the network throughput, improving the adaptability to the scenes that continuously appear in the network transmission process, and ensuring the quality of communication service.
Fig. 5 illustrates a physical structure diagram of an electronic device, which may include, as shown in fig. 5: a processor (processor)51, a communication Interface (communication Interface)52, a memory (memory)53 and a communication bus 54, wherein the processor 51, the communication Interface 52 and the memory 53 complete communication with each other through the communication bus 54. The processor 51 may invoke logic instructions in the memory 53 to perform a method of data retransmission in acknowledged mode of the radio link control layer, the method comprising: sending a data packet to a receiving end; receiving confirmation information returned by the receiving terminal based on the data packet; determining the delay time corresponding to the unsent successful data packet according to the confirmation information; and retransmitting the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
In addition, the logic instructions in the memory 53 may be implemented in the form of software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In another aspect, the present invention also provides a computer program product, the computer program product comprising a computer program, the computer program being stored on a non-transitory computer readable storage medium, wherein when the computer program is executed by a processor, the computer is capable of executing the method for retransmission of data in acknowledged mode of radio link control layer provided by the above methods, the method comprising: sending a data packet to a receiving end; receiving confirmation information returned by the receiving terminal based on the data packet; determining the delay time corresponding to the data packet which is not successfully sent according to the confirmation information; and retransmitting the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method for retransmission of data in acknowledged mode of a radio link control layer provided by the above methods, the method comprising: sending a data packet to a receiving end; receiving confirmation information returned by the receiving terminal based on the data packet; determining the delay time corresponding to the data packet which is not successfully sent according to the confirmation information; and retransmitting the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for retransmitting acknowledged mode data of a radio link control layer (RLC), comprising:
sending a data packet to a receiving end;
receiving confirmation information returned by the receiving end based on the data packet;
determining the delay time corresponding to the unsent successful data packet according to the confirmation information;
and retransmitting the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
2. The method of claim 1, wherein the determining the delay time according to the acknowledgement information comprises:
obtaining unsuccessfully sent data packets according to the confirmation information;
obtaining corresponding retransmission times according to the unsuccessfully transmitted data packet;
and determining the delay time according to the retransmission times.
3. The method of claim 2, wherein the determining the delay time corresponding to the unsent successful data packet according to the retransmission times comprises:
and obtaining the delay time based on the Fibonacci sequence according to the retransmission times.
4. The method of claim 2, wherein the determining the delay time corresponding to the unsent successful data packet according to the retransmission times comprises:
acquiring retransmission delay time corresponding to each previous retransmission;
and according to the retransmission delay time corresponding to each retransmission, obtaining the sum of the retransmission delay time corresponding to the retransmission times in the previous two retransmissions by using the retransmission times as the delay time corresponding to the unsent successful data packet.
5. The RLC layer acknowledged mode data retransmission method of claim 2, wherein said delay time is less than or equal to 55.
6. The RLC layer acknowledged mode data retransmission method as claimed in claim 1, wherein said acknowledgement information is generated for said receiver based on received data packets to acknowledge successful reception of corresponding data packets.
7. An apparatus for retransmission of acknowledged mode data at a radio link control layer, comprising:
the data sending module sends a data packet to a receiving end;
the data receiving module is used for receiving confirmation information returned by the receiving end based on the data packet;
the delay setting module is used for determining the delay time corresponding to the data packet which is not successfully sent according to the confirmation information;
and the data retransmission module retransmits the corresponding data packet which is not successfully transmitted to the receiving end according to the delay time.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program performs the steps of the method for retransmission of acknowledged mode data at a radio link control layer as claimed in any of claims 1 to 6.
9. A non-transitory computer readable storage medium, having stored thereon a computer program, wherein the computer program, when being executed by a processor, is adapted to carry out the steps of the method for retransmission of acknowledged mode data of a radio link control layer according to any of the claims 1 to 6.
10. A computer program product comprising a computer program, wherein the computer program when executed by a processor implements the steps of the method for retransmission of acknowledged mode data of the radio link control layer as claimed in any of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210072081.0A CN114629598A (en) | 2022-01-21 | 2022-01-21 | Method and device for retransmitting acknowledged mode data of radio link control layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202210072081.0A CN114629598A (en) | 2022-01-21 | 2022-01-21 | Method and device for retransmitting acknowledged mode data of radio link control layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4633462A (en) * | 1983-07-18 | 1986-12-30 | The Board Of Trustees Of The University Of Illinois | Multiple access communication on a CATV reverse channel |
| CN105187154A (en) * | 2015-06-09 | 2015-12-23 | 小米科技有限责任公司 | Response packet reception time delay method and response packet reception time delay device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4633462A (en) * | 1983-07-18 | 1986-12-30 | The Board Of Trustees Of The University Of Illinois | Multiple access communication on a CATV reverse channel |
| CN105187154A (en) * | 2015-06-09 | 2015-12-23 | 小米科技有限责任公司 | Response packet reception time delay method and response packet reception time delay device |
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