RLC data retransmission method and device

A technology for data retransmission and retransmission request, applied in the field of communication, can solve problems such as low data transmission efficiency, and achieve the effects of improving data transmission efficiency, reducing the number of reorganizations, and reducing the number of segmentations

Pending Publication Date: 2022-02-22
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present disclosure provides an RLC data retransmission method and device to solve the problem

Method used

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  • RLC data retransmission method and device
  • RLC data retransmission method and device
  • RLC data retransmission method and device

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[0054] In order to reduce the fragmentation of network data transmission, reduce the burden on the sending device and the receiving device, and thus improve the data transmission efficiency, in the embodiments of the present disclosure, a solution for RLC data retransmission is provided.

[0055]The solution is as follows: the sending device selects at least one PDU from each PDU to be retransmitted at the RLC layer according to the sending buffer capacity of the MAC layer, and the sending device fills the selected at least one PDU into the sending buffer of the MAC layer, wherein the filling After the remaining capacity of the sending buffer is less than the length of any unselected PDU, the sending device sends at least one PDU.

[0056] In order to make those skilled in the art better understand the technical solutions of the present disclosure, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference ...

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Abstract

The invention relates to the technical field of communication, in particular to an RLC data retransmission method and device, which are used for improving data retransmission efficiency, and the method comprises the following steps: sending equipment selects at least one PDU from to-be-retransmitted PDUs of an RLC layer according to the sending cache capacity of an MAC layer, and the sending equipment fills the selected at least one PDU into a sending cache of the MAC layer, the remaining capacity of the filled sending cache is smaller than the length of any unselected PDU, and then the sending device sends at least one PDU. Thus, according to the sending cache of the MAC layer, the retransmission data is selectively transmitted, the number of times that the PDU is segmented can be reduced, fragmentation of network data transmission is reduced, the data transmission efficiency is improved, and meanwhile consumption of system resources is reduced.

Description

technical field [0001] The present disclosure relates to the field of communication technologies, and in particular to a method and device for retransmitting RLC data. Background technique [0002] In the Acknowledged Mode (AM) mode of the Radio Link Control (RLC), the Automatic Repeat-reQuest (ARQ) mechanism is used to retransmit lost or erroneous data packets to achieve reliable data transmission. [0003] refer to figure 1 As shown, when the AM mode is used to send data, the sending device sends the newly transmitted Service Data Unit (ServiceData Unit, SDU) to the receiving device in sequence, and the receiving device sends the status protocol data unit ( Protocol Data Unit, PDU), to notify the sending device to retransmit data. [0004] The sending device sequentially fills the SDUs or SDU slices to be retransmitted into the retransmission queue in the order in which they are inserted into the sending buffer of the Media Access Control (MAC) layer for sending. For e...

Claims

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Application Information

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IPC IPC(8): H04L1/18
CPCH04L1/18H04L1/1874
Inventor 黄斑斑
Owner DATANG MOBILE COMM EQUIP CO LTD
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