Service wireless network subsystem repositioning method

A network subsystem and service wireless technology, applied in the field of service wireless network subsystem relocation, can solve the problems of data stream decryption failure, inability to solve data decryption, sequence number reversal, etc., so as to avoid decryption failure, reduce risks, and affect the impact of protocol changes. small effect

Active Publication Date: 2007-08-29
ZTE CORP
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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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Examples

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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 method includes steps: in preparation phase of reorientation (RO), after accomplishing assigning RO resources, destination radio network controller (DRNC) returns back reply message of RO request to core network (CN); after receiving the message, CN sends message of RO command to source radio network controller (SRNC); after receiving the message of command, SRNC sends RO submission message to DRNC, and sends UTRAN message of mobile information to UE; after receiving the message, UE returns back confirmation message for UTRAN to DRNC; after receiving the confirmation message, DRNC starts up role change to SRNC, and then keeps up working on operation at ending phase. Being simple and easy to implement, the invention can raise PS real time service switching performance effectively and shorten data interrupt time delay of SRNS RO when SRNS carries out RO, no matter whether data are encrypted or not, and no matter what mode is adopted by RLC protocol.

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 (3GPP) has described the implementation method of SRNS relocation, and the process is shown in Figure 1. When the DRNC receives the Relocation Commit (Relocation Commit ) message, DRNC starts to perform role change, no longer receives user data from SRNC through Iur port, and sends relocation detection message to CN; then sends UTRAN (UMTS Terrestrial Radio Acc...

Claims

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Application Information

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