Service bearer re-establishment method and device

A service bearer and establishment method technology, applied in the field of service bearer re-establishment methods and devices, can solve the problems of inconsistent data encryption and decryption parameters, service data interruption, etc., and achieve the effect of avoiding service data interruption.

Active Publication Date: 2015-08-12
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the UE needs to create a service bearer of type AM, since the HFN and SN values ​​of the source cell are inconsistent with the HFN and SN values ​​maintained by the UE, the data encryption and decryption parameters of the source cell and the UE will be inconsistent, and the UE cannot create a new service bearer. Carrying the business of AM, which leads to the interruption of business data

Method used

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  • Service bearer re-establishment method and device
  • Service bearer re-establishment method and device
  • Service bearer re-establishment method and device

Examples

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Effect test

Embodiment 1

[0039] According to the embodiment of the present invention, the method for re-establishing the service bearer in the embodiment of the present invention is described by taking the UE having two service bearers in the serving cell and the bearer types are both AM as an example.

[0040] In the embodiment of the present invention, when the UE is handed over, the target cell accepts only one service bearer of the UE due to limited resources, and notifies the source cell through a handover request confirmation message. The source cell sends a handover command to the UE. After receiving the handover command, the UE saves the HFN and SN information of all current service bearers, and deletes the service bearers that fail to be accepted. After the UE fails to access the target cell, it sends a re-establishment request to the source cell. After the re-establishment is completed, the source cell sends a reconfiguration message to the UE. After receiving the reconfiguration message, t...

Embodiment 2

[0051] In the embodiment of the present invention, the UE has two service bearers in the source cell, one of which is of Unacknowledgement Mode (Unacknowledgment Mode, UM for short), and the other of which is AM. When the handover occurs, the target cell only accepts the AM service bearer due to limited resources, and notifies the source cell through a handover request acknowledgment message. The source cell sends a handover command to the UE. After receiving the handover command, the UE deletes the service bearer that fails to accept, and only saves the HFN and SN information of the service bearer of type AM. Since the AM service bearer always exists, the follow-up process is consistent with the existing technology.

[0052] image 3 is a flow chart of a method for re-establishing a service bearer according to Embodiment 2 of the present invention, as shown in image 3 As shown, the method may include the following steps (step S302-step S310):

[0053] In step S302, the UE...

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PUM

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Abstract

Disclosed are a service bearing re-establishment method and device. The method comprises: during the process of a UE switching from a source cell to a target cell, the current HFN and SN of UE service bearing of the AM mode are stored, and the service bearing that the target cell has failed to accept is deleted; the UE fails to switch to the target cell, and re-establishes a connection with the source cell; the UE establishes the service bearing failed to be accepted, determines that the service bearing is of the AM mode and that the HFN and SN corresponding to the service bearing have been stored, and assigns the corresponding HFN and SN for the service bearing. The present invention ensures that the UE can establish new service bearing of the AM mode, thereby avoiding service data cutoff.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method and device for re-establishing a service bearer. Background technique [0002] When a user equipment (User Equipment, referred to as UE) is handed over from a source cell to a target cell, the target cell may only accept part of the service bearers of the UE (for example, due to limited resources of the target cell), and the target cell The source cell sends a handover request confirmation message to notify the source cell that a service bearer of the UE fails to be accepted. At this time, the handover command sent by the source cell to the UE carries the service bearer deletion list, and notifies the UE to release the service bearers that failed to be accepted by the target cell. After receiving the handover command, the UE will release the service bearers in the service bearer deletion list, and then synchronize and access to the target cell. [0003] If the UE fail...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W36/00H04W76/02
CPCH04W36/0055H04W36/0079
Inventor 王达菲
Owner ZTE CORP
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