Service wireless network subsystem repositioning method

A network subsystem and service wireless technology, applied in the field of relocation of the service wireless network subsystem, can solve the problems of sequence number inversion, data stream decryption failure, and data decryption failure, so as to achieve small impact of protocol changes, avoid decryption failure, and reduce risk effect

Active Publication Date: 2009-09-02
ZTE CORP
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the RLC is in UM mode, in the case of encryption, the HFN sequence number on the UE side will be reversed due to the inconsistency between the DRNC side and the UE side RLC entity number, which will cause subsequent data stream decryption to fail.
Therefore, these methods have limitations in solving real-time service switching, and cannot solve the two problems of RLC reset in AM mode and RLC data decryption in UM mode under encryption

Method used

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  • Service wireless network subsystem repositioning method
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  • Service wireless network subsystem repositioning method

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Embodiment Construction

[0030]The core principle of the present invention is that in the SRNS relocation process, the SRNC replaces the DRNC to send the UTRAN mobility information message, and when the DRNC receives the relocation submission message, the role change timing is postponed, and the UE is kept communicating with the SRNC through the original Iur port For the transmission of the data link, the DRNC only receives the data of the signaling bearer RB2 at this time. After the DRNC receives the UTRAN mobility information confirmation message replied by the UE on RB2, it performs a full role change to the SRNC, switches the data connection relationship from the Iur port to the Iu port, and completes the subsequent relocation process.

[0031] Since the DRNC role change is delayed, before the UE replies with the UTRAN mobility information confirmation message, the UE can still maintain the data transmission with the SRNC normally. After the UE replies, the DRNC can quickly send the relocation comp...

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Abstract

The invention discloses a relocation method of a serving wireless network subsystem, comprising the following steps: in the relocation preparation stage, after the destination wireless network controller DRNC completes relocation resource allocation, it replies a relocation request response message to the core network CN, CN After receiving it, send a relocation command message to the source radio network controller SRNC; after receiving the command message, the SRNC sends a relocation submission message to the DRNC, and sends a UTRAN mobility information message to the UE. When the UE receives the message Afterwards, reply UTRAN mobility information confirmation message to DRNC; After DRNC receives this confirmation message, begin to carry out the role transition to SRNC, then continue to complete the operation of the end stage of relocation. Adopting the method of the present invention is simple and easy, no matter whether the data is encrypted or not, and no matter what mode the RLC protocol adopts, it can effectively improve the performance of PS real-time service switching during SRNS relocation, and shorten the SRNS relocation data interruption delay.

Description

technical field [0001] The invention relates to a method for relocating a serving wireless network subsystem in a WCDMA system. Background technique [0002] In a Wideband Code Division Multiple Access (WCDMA) system, when a User Equipment (UE) moves from a Source Radio Network Controller (SRNC) cell to a drifting When the Radio Network Controller (DRNC for short) is in the cell, the user control right can be transferred through the Serving Radio Network Subsystem (SRNS for short) relocation process, so as to realize the WCDMA system's support for UE inter-RNC mobility. [0003] The 3rd Generation Partnership Project (3rd Generation Partnership Project, referred to as 3GPP) has described the implementation method of SRNS relocation, and the process is as follows figure 1 As shown, wherein after DRNC receives the relocation submission (Relocation Commit) message that SRNC sends, DRNC starts to change roles, no longer receives user data from SRNC through Iur mouth, and sends ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04Q7/38H04W36/10
Inventor 赵俊续斌解雁春
Owner ZTE CORP
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