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RLC SDU segmentation processing method, device and terminal

A processing method and terminal technology, applied in the field of communication, can solve problems such as complex operation

Pending Publication Date: 2020-12-29
GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the receiving end of RLC adds and deletes SDU segments, it needs to rebalance the tree through one or more tree rotations, and the operation is complicated.

Method used

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  • RLC SDU segmentation processing method, device and terminal
  • RLC SDU segmentation processing method, device and terminal
  • RLC SDU segmentation processing method, device and terminal

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Embodiment Construction

[0024] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0025] The RLC protocol obtains data from PDCP (Packet Data Convergence Protocol) to generate an RLC SDU, and then sends it to the RLC entity at the receiving end through the MAC layer and the physical layer.

[0026] The RLC entity can run in UM (Unacknowledged Mode, unacknowledged mode) and AM (Acknowledged Mode, acknowledged mode). UM supports fragmentation but not retransmission. AM supports segmentation, deduplication, and retransmission of erroneous data.

[0027] In UM and AM, each incoming RLC SDU is accompanied by an SN. SN is included in the RLC PDU header. For non-fragmented SDUs, the RLC PDU simply appends a header directly on the RLC SDU. It should be noted that the RLC PDU can be pre-generated because the header...

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Abstract

The embodiment of the invention provides an RLC SDU segmentation processing method and device, and a terminal, and relates to the technical field of communication. The method comprises the following steps: receiving a first radio link control RLC service data unit SDU segment; determining a hash value of a sequence number SN of the first RLC SDU segment; and according to the hash value, storing the first RLC SDU in a linked list corresponding to the hash value in a segmented manner. According to the embodiment of the invention, the SDU segment is stored in the linked list corresponding to thehash value of the SN of the SDU segment, so that the operation is simple.

Description

technical field [0001] The embodiment of the present application relates to the field of communication technologies, and in particular to a method, device and terminal for processing RLC SDU segmentation. Background technique [0002] RLC (Radio Link Control, radio link control) is the radio link control layer of the data plane of the 5G NR (New Radio, new air interface) protocol stack. A PDU (Protocol Data Unit, protocol data unit) defined by the RLC protocol may include a complete SDU (Service Data Unit, service data unit) or a SDU segment. [0003] In related technologies, after receiving the RLC PDU, the receiving end of the RLC analyzes the header (header) information of the RLC PDU to obtain the SN (Sequence Number, sequence number) and SO (Segmentation Offset, segmented) of the SDU segment Offset) and SI; the receiving end of RLC stores and operates SDU segments in the form of AVL (Adelson-Velskii and Landis) tree according to SN, SO and SI (Segmentation Information,...

Claims

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Application Information

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IPC IPC(8): H04W28/06
CPCH04W28/065
Inventor 刘君
Owner GUANGDONG OPPO MOBILE TELECOMM CORP LTD
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