Method, apparatus and system for position information synchronization by packet domain and circuit domain

Abstract

The embodiment of the invention discloses a method for synchronizing the location information of a packet switch (PS) and a circuit switch (CS), and a device and a system thereof, and solves the problem that in a combined mode, when a terminal roams between the packet switch and the circuit switch, because the location information of the terminal in the circuit switch is not correctly updated due to the cooperation problem between the terminal and a network side, the terminal can not be called. The method mainly comprises the steps of terminating flow activation, and detecting by the network side whether the location information of the circuit switch in which the terminal locates matches with the circuit switch location information registered in a user home location register (HLR); and if mismatching is detected and the statues of the circuit switch in which the terminal locates is idle, notifying the terminal to initiate combined location update by packet switch serving equipment. The method can be used for maintaining location update of the circuit switch.

Description

technical field [0001] The present invention relates to the communication field, in particular to a method, device and system for synchronizing location information between packet domain and circuit domain. Background technique [0002] The communication network is divided into a packet domain (Packet Switch, PS domain) and a circuit domain (Circuit Switch, CS domain). The PS domain handles data services, such as mobile Internet access; the CS domain handles voice services, such as voice calls and short messages. [0003] The Serving General Packet Radio Service Support Node (Serving GPRS Support Node, Serving GSN, SGSN) is a serving device in the PS domain and is used to manage data services. Mobile Switching Center (Mobile Switching Center, MSC) / User Visiting Location Register (Visiting Location Register, VLR) is a service device in the CS domain, used to call User Equipment (User Equipment, UE) and store dynamic information of users; User Home Location Register (Home Lo...

AI Technical Summary

Problems solved by technology

[0019] In the process of implementing the present invention, the inventors found that there are at least the following problems in the prior art: in the network operation mode I, during the process of UE attaching to the PS domain and CS domain, due to UE defects, wireless network signal instability or protocol Incomplete and other factors, the type of UE attach message is not joint location update, so the SGSN in the PS domain cannot normally notify the MSC / VLR in the CS domain to perform joint location update

The UE fails to address the called party, therefore, the UE cannot be called

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