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Limited retransmission data transmission method for radio link control layer

A technology for wireless link control and data retransmission, applied in the direction of digital transmission systems, transmission systems, and multiple uses of transmission paths, etc., can solve problems affecting the quality of communication services, and improve the quality of communication services. The method is simple and easy, Ease of implementation

Active Publication Date: 2021-04-16
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing RLC layer retransmission methods cannot guarantee that the transmission delay is within a certain range, which will affect the communication service quality

Method used

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  • Limited retransmission data transmission method for radio link control layer
  • Limited retransmission data transmission method for radio link control layer
  • Limited retransmission data transmission method for radio link control layer

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Embodiment Construction

[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] A radio link control layer limited retransmission data transmission method, the method adds timeout control flow, receiving window control flow and sending window control flow three parts on the basis of the original RLC layer AM mode, wherein the timeout control flow is located at the receiving end; wherein :

[0025] Timeout control flow such as figure 1 As shown, the specific method is:

[0026] (A1) If the receivable PDU is received within the specified time, that is, its SN is equal to VR(R), it is judged that it has not timed out, and it is processed according to the standard procedure of the AM mode of the RLC layer.

[0027] (A2) If the receivable PDU is not received within the specified time, it will be judged as a timeout, and start to search locally from VR(R) to VR(MS) whether there is a received PDU, if it does n...

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Abstract

The invention discloses a limited retransmission data transmission method for a wireless link control layer, and relates to the field of wireless mobile communication. The invention provides the limited retransmission data transmission method for optimizing an AM (Amplitude Modulation) mode of an RLC (Radio Link Control) layer, which is characterized in that an overtime control flow, a receiving window control flow and a sending window control flow are added on the basis of the AM mode of the original RLC layer. The retransmission function is reserved, and most data of the transmission delay is ignored, so that the purpose of ensuring that the transmission delay is within an acceptable range while the communication service quality is improved is achieved.

Description

technical field [0001] The invention relates to the technical field of wireless mobile communication, in particular to a limited retransmission data transmission method of a wireless link control layer. Background technique [0002] In existing mobile communication systems, in order to ensure the quality of communication services, there are generally link control protocols, among which the radio link control layer (Radio Link Control, RLC) in the LTE system is widely used, including transparent mode (Transparent Mode, TM), Unacknowledged Mode (Unacknowledged Mode, UM) and Acknowledged Mode (Acknowledged Mode, AM) three data transmission modes. The RLC layer is located between the service layer and the MAC layer. Its main functions include segmentation / serialization and reassembly of service data units (Service Data Unit, SDU), ARQ error correction, protocol data unit (Protocol Data Unit, PDU) reordering, and repeated reporting. File detection, PDU re-segmentation and other ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/16H04L1/18H04L5/00
Inventor 卢山刘岩邓宝恺刘飞扬徐冲柯
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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