Method and device for RRC connection reestablishment

A technology for connection reconstruction and configuration parameters, which is applied in connection management, access restrictions, electrical components, etc., and can solve problems such as wasting signaling processes

Active Publication Date: 2010-06-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] When the suitable cell selected by the UE does not have the context of the UE, the network side needs to send an RRC connection reestablishment rejection message before returning to the idle state, which wastes the signaling process

Method used

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  • Method and device for RRC connection reestablishment
  • Method and device for RRC connection reestablishment
  • Method and device for RRC connection reestablishment

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Embodiment Construction

[0029] In order to make the purpose, 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.

[0030] Due to radio link failure, handover failure, integrity protection failure, RRC reconfiguration failure and other reasons, the RRC connection is reestablished. Before the UE initiates the RRC connection reestablishment, the UE needs to select a suitable cell. According to whether the UE selects a suitable cell is a ready cell. case, initiate RRC connection reestablishment or enter idle state.

[0031] To this end, the present invention provides the following embodiments.

[0032] Such as figure 1 As shown, it is a schematic flow chart of the first embodiment of the RRC connection reestablishment method of the present invention, including the following steps:

[0033] 101. Select a suitable community;

[0034] 102a. If the selected appropriate cell is a p...

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PUM

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Abstract

The invention provides a method and a device for RRC connection reestablishment. The method is that a proper community is selected; the RRC connection reestablishment is initiated if the selected proper community is viewed as a prepared community; and idle state is returned if the selected proper community is viewed as an unprepared community. By adopting the method and the device for controlling the RRC connection reestablishment through wireless resources, the signaling flow is saved.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a method and a device for RRC connection reestablishment in the technical field of wireless communication. Background technique [0002] When the UE detects a radio link failure, handover failure, bottom layer indication integrity protection failure, or RRC reconfiguration failure, the UE needs to perform cell selection before initiating RRC connection reestablishment, and the UE selects a suitable cell according to the cell selection criteria. The E-UTRA cell initiates an RRC connection reestablishment request message, and returns to the idle state if a different system cell is selected. [0003] At present, the LTE system only supports backward handover. Before the UE initiates RRC connection reestablishment to the cell, the cell prepares the UE context. The cell does not need to obtain the UE context from the source cell or the mobility management entity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/02H04W48/18H04W36/30
Inventor 熊新郭轶
Owner HUAWEI TECH CO LTD
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