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Radio resource control connection and reestablishment method

A technology for radio resource control and connection re-establishment, which is applied in connection management, wireless communication, sustainable building, etc., and can solve the problems of E-UTRA side mobility failure, handover failure, and increased UE call drop rate.

Inactive Publication Date: 2014-03-12
POTEVIO INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2) Handover fails (timer T304 times out);
[0005] 3) Mobility failure on the E-UTRA side;
[0006] 4) The integrity comparison of the underlying system fails;
[0007] 5) RRC connection reconfiguration failed
Therefore, in the actual network, many reconstructions are rejected by the network side, which increases the UE drop rate

Method used

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Embodiment Construction

[0032] The basic idea of ​​the RRC connection re-establishment method proposed in this application is that when the RRC connection is re-established, there is no restriction on the cell reported for re-establishment, and it can be any cell; according to the results of the UE's measurement report and the criteria for cell selection, an optimal cell is selected. When the cell reporting RRC reestablishment cannot find the context of the UE, the UE context information of the source cell required for reestablishment is sent to the cell reporting RRC reestablishment through the X2 interface, thereby completing the RRC reestablishment process.

[0033] figure 1 The basic flowchart of the RRC connection reconstruction method proposed for this application includes the following steps:

[0034] Step 101: The first base station receives the RRC connection reestablishment request sent by the user equipment, and judges whether there is context information of the user equipment locally, and...

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Abstract

The application discloses a radio resource control (RRC) connection and reestablishment method. After a RRC connection and reestablishment request is received by a base station, if UE context information cannot be found locally, then in a cell which is reported to be reestablished, the physical cell identity (PCI) carried by the user equipment identity is analyzed, and the cell which triggers the reestablishment is found by matching PCI in a neighboring cell list and the user equipment context information is acquired from the base station of the cell, thereby initiating the RRC connection and reestablishment of the user equipment. According to application, RRC connection and reestablishment can also be realized when existing protocols do not support the operation, so that the RRC connection and reestablishment success rate can be improved, and the UE call drop rate can be reduced.

Description

technical field [0001] The present application relates to the technical field of mobile communication, and in particular to a radio resource control (RRC) connection reestablishment method. Background technique [0002] When the user equipment (UE) is in the radio resource control idle (RRC_IDLE) state, the RRC connection establishment process can be triggered when the upper layer requests to establish an RRC connection, such as responding to a paging message or the UE initiates a call. For a UE in the radio resource control connected (RRC_CONNECTED) state, the security of the access stratum (AS, Access Stratum) has been activated. Due to reasons such as the wireless environment, when the RRC connection process needs to be re-established, RRC connection re-establishment can be initiated if any of the following conditions is met process: [0003] 1) A wireless link failure is detected; [0004] 2) Handover fails (timer T304 times out); [0005] 3) Mobility failure on the E...

Claims

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Application Information

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IPC IPC(8): H04W76/02
CPCY02B60/50Y02D30/70
Inventor 张燕王丹
Owner POTEVIO INFORMATION TECH
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