Process method for preventing retransmitting automatic retransmission request data

A technology for automatic retransmission of requests and repeated transmissions. It is used in communication between multiple stations, network traffic/resource management, and error prevention/detection using return channels. It can solve problems such as resource waste and achieve resource saving. Effect

Inactive Publication Date: 2007-10-03
HUAWEI TECH CO LTD
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  • Summary
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  • Description
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AI Technical Summary

Problems solved by technology

However, since there is a time interval of handover interruption time during the UE handover from the source NB to the target NB and synchronization with the target cell, in this time interval, the UE may have received part of the data of SDU2, if the target NB Sending SDU2 to the UE completely will cause a waste of resources

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  • Process method for preventing retransmitting automatic retransmission request data
  • Process method for preventing retransmitting automatic retransmission request data
  • Process method for preventing retransmitting automatic retransmission request data

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] Since the operation of the base station on the SDU may not be completed in ARQ, the data obtained after the operation on the SDU is not an ARQ PDU. Therefore, in the present invention, the data obtained by the base station on the SDU is called segmented data. In the ARQ mechanism, the UE returns a response to the base station according to the status of the received data. Therefore, according to the response of the UE, it is possible to know whether the UE receives the corresponding data correctly or not. In the present invention, when the UE performs handover and the source base station forwards data to the target base station, the UE or the source base station also needs to provide the target base station with the UE's data reception status and / or segment i...

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Abstract

This invention discloses a method to avoid repeatedly sending automatically resending data. When UE conducts switching and source base station transmits data to the target one, UE or source base station also need to provide the data receiving state and / or paragraphing information of UE. According to it, the target base station determines whether the state of receiving paragraphing data is right, and only resends those data that gets negative response of UE, which is not correctly received by UE, and sends data never transmitted, avoiding resending the received data and saving resources effectively.

Description

technical field [0001] The present invention relates to handover technology, in particular to a processing method for avoiding repeated transmission of Automatic Repeat reQuest (ARQ, Automatic Repeat reQuest) data after handover. Background technique [0002] The 3rd Generation Partnership Project (3GPP, 3rd Generation Partnership Project) is studying network evolution in order to enhance the competitiveness of future networks. The evolved 3G network should have the technical characteristics of high speed, low delay, and IP. In order to achieve this goal, in the field of Radio Access Network (RAN, Radio Access Network) research, a series of related technical issues including mobility management must be solved. The handover in the 3G network needs to be researched and described from two aspects of the control plane (CP, Control Plane) and the user plane (UP, User Plane). From the perspective of the handover process, the handover can be divided into three stages: preparation,...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04Q7/30H04Q7/20H04B7/26H04W28/04H04L1/18H04W36/02
Inventor 王宗杰梁欣刚谢明江薛希俊郑潇潇杭大明邓永峰
Owner HUAWEI TECH CO LTD
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