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Method and system for reducing redundant message retransmission of radio link control layer

A wireless link control and redundant message technology, applied in the field of mobile communication, can solve the problem of wasting air interface resources and achieve the effect of reducing overhead and avoiding repeated transmission

Inactive Publication Date: 2010-06-23
ZTE CORP
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Problems solved by technology

[0014] In view of this, the main purpose of the present invention is to provide a method for reducing message retransmission at the radio link control layer, which is used to solve the problem of repeatedly sending redundant messages that the receiving end has confirmed to receive after the RLC protocol entity is rebuilt, resulting in Resource-wasting technical issues

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  • Method and system for reducing redundant message retransmission of radio link control layer

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[0048] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail by citing the following embodiments and referring to the accompanying drawings.

[0049] image 3 It is a schematic diagram of the logical structure of the system of the present invention, including two parts, the UE end and the eNodeB end, and the protocol layer relationship and module composition of the two ends are basically the same. Both ends include a control plane processing unit and a user plane processing unit. Each UE has a corresponding user plane processing unit on the eNodeB side, which is used to process user plane data belonging to the same UE. The RLC entity in the user plane processing unit is used to complete the radio link control layer protocol function. Each end may include multiple service logical channels, so there will be multiple RLC protocol entities corresponding to the service logical chann...

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Abstract

The invention discloses a method and a system for reducing redundant message retransmission of a radio link control layer, which are used for solving the technical problem that after an RLC protocol entity is rebuilt, the transmitting end transmits the redundant message repeatedly which is confirmed to be received by the receiving end to cause the resource waste. By utilizing the characteristics that the RLC protocol layer can previously predict whether the rebuilt is happened or not, the receiving end RLC protocol entities which belongs to the confirming mode of the same terminal try to senda status message to the transmitting end before the RLC protocol entity receives the rebuilding instruction, the receiving end RLC protocol entity deletes the massage which is confirmed to be received by the receiving end according to the status report before the transmitting end RLC protocol entity receives the rebuilding request, and the message is not transmitted repeatedly after the rebuilding, so the retransmission of the redundant message can be reduced, and the empty expenditure can be reduced.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to an LTE (Long Term Evolution, long-term evolution) system, in the re-establishment procedure (Re-establishment procedure) of the wireless link control layer protocol entity, reducing or avoiding the retransmission of redundant messages on the sending side methods and systems. Background technique [0002] The RLC (Radio Link Control, Radio Link Control) protocol layer is a sublayer of L2 (Layer 2) in the wireless interface protocol stack of LTE, and is located above the MAC (Media Access Control, Media Access Control) layer. RLC The protocol layer provides segmentation and retransmission services for user and control data. The functions of the RLC protocol layer include link control, encapsulation and reassembly, concatenation, user data transmission, error correction, protocol error detection and repair, etc. Each RLC protocol entity is configured by RRC (Radio Resou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04W76/04
CPCH04L1/1867
Inventor 李邈汤德龙
Owner ZTE CORP
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