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Method and system for realizing connection reestablish of radio resource control protocol

A technology of wireless resource control and connection re-establishment, applied in the field of communication, can solve the problems of call recovery and limited application scenarios, and achieve the effect of reducing dropped calls

Inactive Publication Date: 2012-05-30
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the cell the UE re-accesses to is not in the same eNodeB as the previous serving cell, nor is it the target cell of the handover, the call cannot be resumed through RRC connection re-establishment
[0004] It can be seen that the application scenarios of call reconstruction in the current protocol version are limited

Method used

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  • Method and system for realizing connection reestablish of radio resource control protocol
  • Method and system for realizing connection reestablish of radio resource control protocol
  • Method and system for realizing connection reestablish of radio resource control protocol

Examples

Experimental program
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Effect test

Embodiment 1

[0043] Combine below figure 1Describe in detail the process of cross-eNodeB RRC connection reestablishment (X2 interface forwards user plane data).

[0044] Step 101, the UE detects an abnormality, and reports an RRC Connection Re-establishment Request to the target eNodeB;

[0045] Step 102, the target eNodeB sends an RLF INDICATION message to the source eNodeB where the UE's original camping cell is located through the X2 interface, which carries the handover request due to RRC Connection Reestablish field, and this field is configured as 1;

[0046] Step 103, the source eNodeB receives the RLF INDICATION, finds that the handover request due to RRC Connection Reestablish is configured as 1, and sends a Handover Requst message to the target eNodeB, which carries UE context information;

[0047] Step 104, after receiving the Handover Request, the target eNodeB sends a Handover Request ACK message to the source eNodeB, and establishes related resources such as X2 interface tra...

Embodiment 2

[0058] Combine below figure 2 Describe in detail the process of cross-eNodeB RRC connection reestablishment (X2 interface does not forward user plane data).

[0059] Step 201, the UE detects an abnormality, and reports an RRC Connection Re-establishment Request to the target eNodeB;

[0060] Step 202, the target eNodeB sends an RLF INDICATION message to the source eNodeB where the UE's original camping cell is located through the X2 interface, which carries the handover request due to RRC Connection Reestablish field, and this field is configured as 1;

[0061] Step 203, the source eNodeB receives the RLF INDICATION, finds that the handover request due to RRC Connection Reestablish is configured as 1, and sends a Handover Requst message to the target eNodeB, which carries UE context information;

[0062] Step 204, after receiving the Handover Request, the target eNodeB sends a Handover Preparation Failure message to the source eNodeB;

[0063] Step 205, the target eNodeB se...

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Abstract

The invention discloses a method and a system for realizing connection reestablish of a radio resource control (RRC) protocol. The method includes steps of sending radio link failure indication to a source eNode B attributive to the UE (user equipment) through an X2 interface after the source eNode B receives an RRC connection reestablish request sent by the UE, and carrying identification information capable of implementing the RRC connection reestablish by switching. The source eNode B is informed that RRC connection reestablish can be realized by switching after receiving the wireless connection failure indication, then sends switching request to a target eNode B and carries context information of the UE, the RRC connection reestablish of the UE is started after the target eNode B receives the switching request. Supporting range and scene of the current protocol to the RRC connection reestablish are broadened, and dropped calls caused by failure of the radio link failure in the network can be effectively reduced.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and system for realizing RRC (Radio Resource Control, radio resource control protocol) connection reestablishment. Background technique [0002] The LTE (Long Term Evolution, long-term evolution) network introduces the method of RRC (Radio Resource Control, radio resource control protocol) connection re-establishment. When the RRC connection between base stations is interrupted and the wireless link fails, the RRC connection can be restored through the method of RRC connection reconstruction, which reduces the call drop rate and improves user experience. [0003] In the 3GPP (The 3rd Generation Partnership Project, 3rd Generation Partnership Project) protocol 36.300-940, the RRC reconstruction method and scope supported in the current protocol version are described and defined. In the current protocol version, after the UE detects that the radio link fails, if the cell...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W76/02H04L1/18H04L1/16
Inventor 杨金星
Owner ZTE CORP
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