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Data retransmission method and apparatus

A data retransmission and retransmission technology, applied in the field of communication, can solve problems such as large number of retransmissions, data transmission failure, complex retransmission processing, etc., and achieve the effect of reducing complexity and preventing failure

Active Publication Date: 2017-02-01
POTEVIO INFORMATION TECH
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Problems solved by technology

[0002] During data transmission in Acknowledged Mode (AM) of Radio Link Control (RLC), media access control (MAC) scheduling due to automatic repeat request (Automatic Repeat Request, ARQ) retransmission Random changes in size lead to arbitrary changes in the length of the re-segmented Protocol Data Unit (PDU). According to the status report processing retransmission and re-segmentation of PDUs, there are various size scenarios, retransmission processing is complicated, and the entire PDU retransmission process is easy to reach the maximum The number of retransmissions, resulting in data transmission failure

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  • Data retransmission method and apparatus
  • Data retransmission method and apparatus

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] figure 1 It is a flowchart of a data retransmission method in an embodiment of the present invention; refer to figure 1 , the method includes:

[0030] S101: When it is necessary to retransmit at least one data segment in the protocol data unit PDU to be transmitted, adjust the retransmission interval according to the data segment;

[0031] It should be noted that at least one data segment can be understood as one data segment or multiple data segments, and the multiple can be understood as two or more (including two).

[0032] In order to facilitate the adjustment of the retransmission interval, in this embodiment, the minimum value of the start position in the ...

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Abstract

The invention discloses a data retransmission method and apparatus and relates to the technical field of communication. The method comprises the following steps: when at least one data segment in a to-be-transmitted protocol data unit (PDU) needs to be retransmitted, adjusting a retransmission interval according to the data segment; and performing segmented transmission on data of the retransmission interval in the to-be-transmitted PDU. According to the invention, the retransmission interval is adjusted through the data segment, the segmented transmission is performed on the data of the retransmission interval in the to-be-transmitted PDU, and what is needed is only to maintain one retransmission interval, such that the retransmission processing complexity is reduced, a whole PDU retransmission process is prevented from reaching maximum retransmission frequency, and data transmission failure is prevented.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a data retransmission method and device. Background technique [0002] During data transmission in Acknowledged Mode (AM) of Radio Link Control (RLC), media access control (MAC) scheduling due to automatic repeat request (Automatic Repeat Request, ARQ) retransmission Random changes in size lead to arbitrary changes in the length of the re-segmented Protocol Data Unit (PDU). According to the status report processing retransmission and re-segmentation of PDUs, there are various size scenarios, retransmission processing is complicated, and the entire PDU retransmission process is easy to reach the maximum The number of retransmissions will cause the data transmission to fail. Contents of the invention [0003] In order to reduce the complexity of retransmission processing and prevent data transmission failure, the present invention provides a data retransmission method, th...

Claims

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Application Information

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IPC IPC(8): H04L1/18
CPCH04L1/187H04L1/1896
Inventor 张月宾
Owner POTEVIO INFORMATION TECH
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