KR20070035326A - Method and System Performing Back-up Switching of Home Location Register - Google Patents

Abstract

The present invention relates to a backup switching method and system of a home location register.

According to the present invention, when a commercial home location register acting as a gateway fails and the backup is transferred to a backup home location register, the TCP / IP separation module server interworking the commercial home location register and the additional service server may change the home location register IP address. A backup switching method of a home location register which detects and links an additional service server with a backup home location register, the method comprising: (a) a PKG (Package) of a commercial home location register providing an additional service to a mobile communication terminal in cooperation with the additional service server; Detecting at the backup home location register a task and a failure; (b) if the step (a) detects a PKG operation and a failure, backup switching to a backup home location register; (c) detecting, at the TCP / IP server, a change in IP address due to a backup transfer from a commercial home location register to a backup home location register; And (d) when detecting the change of the IP address in step (c), disconnecting the supplementary service server from the commercial home location register and connecting the backup home location register so that the supplementary service server and the backup home location register work together. It provides a backup switching method of the home location register, characterized in that it comprises a step.

According to the present invention, a TCP / IP interworking module can be used even when a backup switchover to a backup home location register occurs because a failure of a home location register that acts as a gateway for providing various additional services to a mobile communication terminal in connection with various additional service servers occurs. The built-in TCP / IP detachable server allows the additional service server and the backup home location register to be quickly interlocked, thereby providing an additional service in real time without interruption.

Home Location Register, Backup Home Location Register, Backup Transfer, Additional Services, TCP / IP Interworking

Description

Method and System Performing Back-up Switching of Home Location Register

1 is a block diagram schematically showing a backup switching system of a home location register according to a preferred embodiment of the present invention;

2 is a flowchart illustrating a backup switching process of a home location register according to an exemplary embodiment of the present invention.

<Description of Symbols for Main Parts of Drawings>

100: mobile communication terminal 110: wireless access network

112: base station transmitter 114: base station controller

120: mobile communication exchange 130: visitor location register

140: commercial home location register 150: backup home location register

160: TCP / IP detached server 170: additional service server

The present invention relates to a backup switching method of a home location register and a mobile communication system. More specifically, when a commercial home location register, which acts as a gateway, fails and is backed up to a backup home location register, the TCP / IP detachable server linking the commercial home location register and the supplementary service server changes the home location register IP address. The present invention relates to a backup switching method and a mobile communication system of a home location register for detecting an additional service server and interworking with a backup home location register.

The Home Location Register (HLR) is a system introduced in a mobile communication network to provide a mobile communication service regardless of the location of a mobile subscriber.

The home location registrar has jurisdiction over a given area and stores all the information necessary to provide mobile communication services, ranging from subscriber's mobile terminal located in the area to subscriber's subscriber number, mobile terminal unique number and additional service selection information. And manage. Therefore, in providing various additional services provided by the additional service server existing in the mobile communication network, the home location register service is provided in a TCP / IP (Transmission Control Protocol / Internet Protocol) interworking manner with the additional service server providing various additional services. Providing.

Additional service servers that provide various supplementary services in conjunction with the home location register can receive the information of the called subscriber by interworking with a plurality of home location registers. In conjunction with a commercial home location register that acts as a gateway, it adopts a method of receiving the information of the called subscriber. Since the commercial home location register acting as a gateway has station number routing information of all subscribers existing in the mobile communication network, the additional service servers providing various additional services can provide various additional services even if only interworking with the commercial home location register. Can be.

The commercial home location register performs the same function as other home location registers, and additionally, provides a variety of additional services by interworking with an additional service server using a TCP / IP interworking module. If such a commercial home location register fails, the commercial home location register processes the mobile communication service in real time through the backup switching to the backup home location register. There is a problem in that it is not possible to provide an additional service in real time because the interworking should be changed from a commercial home location register to a backup home location register.

In order to solve the above problems, the present invention, when the failure of the commercial home location register that acts as a gateway, the backup transfer to the backup home location register, the TCP / IP detachable server interworking the commercial home location register and the additional service server home It is an object of the present invention to provide a backup switching method and a mobile communication system of a home location register that detects a change in a location register IP address and associates an additional service server with a backup home location register.

Therefore, according to the first object of the present invention, if the failure of the commercial home location register acting as a gateway and backup switching to the backup home location register, the TCP / IP detachable server interworking the commercial home location register and the additional service server is the home location. 1. A backup switching method of a home location register that detects a change in a register IP address and associates an additional service server with a backup home location register, the method comprising: (a) a commercial home that provides an additional service to a mobile terminal in conjunction with an additional service server; Detecting at the backup home location register a PKG operation and a failure of the location register; (b) if the step (a) detects a PKG (Package) operation and a failure, backup switching to a backup home location register; (c) detecting, at the TCP / IP server, a change in IP address due to a backup transfer from a commercial home location register to a backup home location register; And (d) when detecting the change of the IP address in step (c), disconnecting the supplementary service server from the commercial home location register and connecting the backup home location register so that the supplementary service server and the backup home location register work together. It provides a backup switching method of the home location register, characterized in that it comprises a step.

In addition, according to a second object of the present invention, a mobile communication terminal receiving various additional services, a mobile communication switching station for wirelessly operating data with a wireless communication network and a wireless communication network, the location control of the mobile communication terminal A system comprising a visitor location register (VLR) for performing call processing, external operation processing, and an additional service server providing various additional services, the station number routing information of all subscribers existing in the mobile communication network is stored. A commercial home location register serving as a gateway to interwork with an additional service server providing various additional services; A backup home location register that performs a mobile communication service in real time by switching the backup to the commercial home location register when a failure occurs in the commercial home location register; And backup switching to the backup home location register after the failure of the commercial home location register detects a change in IP address due to the backup changeover from the commercial home location register to the backup home location register so that the additional service server is interlocked with the backup home location register. It provides a backup switching system of the home location register, characterized in that it comprises a TCP / IP detachable server.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram schematically showing a backup switching system of a home location register according to a preferred embodiment of the present invention.

The backup switching system of the home location register according to the preferred embodiment of the present invention is a mobile communication terminal 100, a wireless access network 110, a mobile communication switching center 120, a visitor location register 130, a commercial home location register 140 , Backup home location register 150, TCP / IP detachable server 160, additional service server 170, and the like.

The mobile communication terminal 100 is a terminal capable of voice communication and data communication with a counterpart through a mobile communication network. The mobile communication terminal 100 used in the present invention is a PDA (Personal Digital Assistant), a cellular phone, a PCS (Personal Communication Service) phone, a GSM (Global System for Mobile), which can receive various additional services through a mobile communication network. Phones, Wideband CDMA (W-CDMA) phones, CDMA-2000 phones, Mobile Broadband System (MBS) phones, Digital Multimedia Broadcasting (DMB) phones, and the like.

In addition, the mobile communication terminal 100 is connected to the mobile communication network through a wireless access network not only provides a voice call function to perform a normal voice call by wireless communication with different mobile communication terminals, but also provides a text writing function provided. It refers to a terminal that creates a short message to be delivered by using and then transmits the message to the mobile communication network.

The wireless access network 110 is configured to include a base station transmitter 112, a base station controller 114, a repeater (Enhancer: not shown), and supports both synchronous and asynchronous.

Here, in the case of synchronous, the transmitting and receiving base station transmitter will be a base-station transmission system (BTS), and the transmitting and receiving base station controller will be a base station controller (BSC). The Transceiver Subsystem, the transmitting and receiving base station controller will be a Radio Network Controller (RNC). Of course, the wireless access network 110 according to an embodiment of the present invention is not limited thereto, and may include a GSM network other than a CDMA network and an access network of a fourth generation mobile communication system to be implemented in the future.

The base station transmitter 112 is arranged in units of cells, and receives a call request signal from the mobile communication terminal 100 through a traffic channel among signal channels, and receives the received call request signal from the base station. Location registration is performed to determine the location of the mobile communication terminal 100 transmitted to the controller 114 or existing in the cell area under its control. In addition, the base station transmitter 112 is a network endpoint device that is directly connected to the mobile communication terminal 100 by performing baseband signal processing, wired and wireless conversion, and transmission and reception of wireless signals.

For example, when the mobile communication terminal 100 is a receiving side, the base station transmitter 112 detects the position of the mobile communication terminal 100 existing in its cell area, and then the base station controller (from the mobile communication switching center 120) receives the base station controller ( The call request signal transmitted through the terminal 114 is transmitted to the mobile communication terminal 100 existing in the cell area under its control.

In addition, the base station transmitter 112 may obtain information such as the longitude of the base station transmitter 112 from the Global Positioning System (GPS), and transmit the system parameter message of the forward link call channel to the position information of the base station transmitter 112. Transfer to the mobile communication terminal 100 through. The mobile communication terminal 100 may register new location information by calculating a moving distance of the mobile communication terminal 100 itself using the location information of the base station transmitter 112 of the cell to which the mobile communication terminal 100 belongs.

Here, the location registration is a processing procedure for informing the mobile communication switching center 120 of the location, status, identifier, slot period, and other characteristics of the mobile communication terminal 100 through the base station transmitter 112. Is a procedure for effectively calling the mobile communication terminal 100 when attempting to set up an incoming call to the mobile communication terminal 100. Such a location registration of the mobile communication terminal 100 is performed when the mobile communication terminal 100 moves between mobile communication switching centers 120 when the power of the mobile communication terminal 100 is turned on or off. And when a parameter of the mobile communication terminal 100 is changed.

The base station controller 114 controls the base station transmitter 112, assigns and releases radio channels for the mobile communication terminal 100, controls the transmission output of the mobile communication terminal 100 and the base station transmitter 112, and inter-cell soft handoff. And hard handoff determination, transcoding and vocoding, GPS clock distribution, and operation and maintenance of the base station transmitter 112. The base station controller 114 also transmits subscriber information of the location-registered mobile communication terminal 100 to the mobile communication switching center 120. The base station controller 114 transfers the call request signal transmitted from the mobile communication terminal 100 through the base station transmitter 112 to the mobile communication switching center 120, and, conversely, the base station controller 114 receives the call request signal from the mobile communication switching center 120. It transmits the transferred call request signal to the mobile communication terminal 100 through the base station transmitter 112.

The mobile switching center 120 performs basic and additional service processing, incoming and outgoing signal processing of a subscriber, location registration and handoff procedure, and interworking with other networks. The mobile communication switching center 120 of the IS-95A / B / C system includes an access switching subsystem (ASS) that performs distributed call processing, an INS (interconnection network subsystem) that performs centralized call processing, operation and maintenance. Subsystems such as Central Control Subsystem (CCS), which is in charge of centralizing functions, and Location Registration Subsystem (LRS), which perform storage and management of information on mobile subscribers.

In addition, the mobile switching center 120 for the third and fourth generation may include an Asynchronous Transfer Mode (ATM) switch. The ATM switch increases the transmission speed and the efficiency of circuit use by packet transmission in a cell unit.

When the mobile communication switching center 120 registers the location of the mobile communication terminal 100 through a wireless access network, temporarily stores subscriber information of the mobile communication terminal 100 in the visitor location register 130 and then uses a commercial home location. Request registration of the location of the mobile communication terminal 100 to the register 140.

The visitor location register (VLR) 130 stores the subscriber's data in the case of the location information of the visited subscriber where the location information registration is performed, in the case of transmission from the sending mobile terminal, reception to the receiving mobile terminal, and the like. Received and stored in the mobile communication switching center 120. When the mobile terminal 100 performs location information registration, the visitor location register 130 temporarily stores subscriber information and notifies the commercial home location register 140 to the mobile home location register 140. While receiving and managing copies of the terminal identification number, the terminal unique number, and the service information of the terminal 100, the mobile terminal 100 performs a function of utilizing the location control, call processing, external operation processing, and the like.

The commercial home location register (HLR) 140 receives the location information of the mobile communication terminal 100 from the visitor location register 130 and performs functions such as registration recognition, registration deletion, and location verification. In addition, the commercial home location register 140 stores profile information of the mobile communication terminal 100 that is waiting for a call. Here, the profile information refers to MIN (Mobile Identification Number) ESN (Mobile Serial Number) of the mobile communication terminal 100 and subscribed mobile communication service information. In addition, since the commercial home location register 140 stores the station number routing information of the mobile communication subscriber existing in the mobile communication network, the commercial home location register 140 functions as a gateway to interwork with the additional service server 170 that provides various additional services. do. Commercial home location register 140 according to a preferred embodiment of the present invention separates the TCP / IP interworking module of the commercial home location register 140, and the additional service server 170 by the TCP / IP detachable server 160 It performs the function of providing various additional services to the mobile communication terminal 100 through a mobile communication network by interlocking.

The function of the backup home location register 150 is the same as the function of the commercial home location register 140, and when the commercial home location register 140 has a PKG operation or a failure, a backup for ensuring the real time of the mobile communication service is performed. Transfer. The backup home location register 150 according to the preferred embodiment of the present invention separates the TCP / IP interworking module of the backup home location register 150, and performs the TCP / IP at the time of backup switching due to the failure of the commercial home location register 140. The IP detachable server 160 performs interworking with the additional service server 170 to provide various additional services to the mobile communication terminal 100 in real time through the mobile communication network.

The TCP / IP detachable server 160 normally connects the commercial home location register 140 and the additional service server 170 so that the commercial home location register 140 and the additional service server 170 may interoperate. In addition, when the TCP / IP detachable server 160 transfers the backup home location register 150 to the backup home location register 150 due to a PKG operation or a failure of the commercial home location register 140, the routing including the IP address is performed in the backup home location register 150. Transmitting the information detects a change in the IP address due to backup switching from the commercial home location register 140 to the backup home location register 150. In addition, the backup home location register 150 and the supplementary service server 170 are connected to the backup home location register 150 and the supplementary service server 170 so as to interwork with the backup home location register 150 from the commercial home location register 140. In the backup switching, the disconnection of various additional services provided by the additional service server 170 may not occur. The TCP / IP detachable server 160 does not change the software of the TCP / IP detachable server 160 as the software of the commercial home location register 140 is changed.

The supplementary service server 170 is a server providing various supplementary services, and provides various supplementary services to the mobile communication terminal 100 in connection with the commercial home location register 140 through a connection with the TCP / IP detachable server 160. It performs the function. In addition, when the additional service server 160 performs a backup transfer from the commercial home location register 140 to the backup home location register 150, the TCP / IP detachable server 160 interworks with the backup home location register 150 to provide various services. Provide additional services without interruption.

2 is a flowchart illustrating a backup switching process of a home location register according to an exemplary embodiment of the present invention.

Usually, the TCP / IP detachable server 160 connects the commercial home location register 140 and the additional service server 170 to connect the additional service server 170 and the commercial home location register 140 with the mobile communication terminal ( It is possible to provide a variety of additional services to 100 in real time (S200). If a PKG operation or failure occurs in the commercial home location register 140 connected to the TCP / IP detachable server 160, the backup home location register 150 detects a PKG operation or failure of the commercial home location register 140 (S210). . When the backup home location register detects a PKG operation or a failure of the commercial home location register 140 in step S210, the commercial home location register 140 and the backup home location register 150 that are interoperable interoperate with each other. In order to ensure the backup to the backup home location register 150 is transferred to the backup (S220). If the PKG operation or failure of the commercial home location register 140 is not detected by the backup home location register 150 in step S210, the backup home location register 150 detects the PKG operation or failure of the commercial home location register 140. The process of step S200 is maintained until detection.

Since the IP address of the commercial home location register 140 and the IP address of the backup home location register 150 are different, backup switching to the backup home location register 150 due to a PKG operation or a failure of the commercial home location register 140 is performed. When the TCP / IP detachable server 160 receives the routing information including the IP address transmitted from the backup home location register 150, the IP by the backup switching from the commercial home location register 140 to the backup home location register 150 is performed. The change of the address is detected (S230).

When the TCP / IP detachable server 160 detects the change of the IP address due to the backup switching in step S230, the TCP / IP detachable server 160 terminates the connection with the commercial home location register 140 and the backup home location. When the backup transfer to the backup home location register 150 due to the failure of the commercial home location register 140 by enabling the link service 150 and the additional service server 170 and the backup home location register 150 in connection with, By preventing the disconnection of various types of additional services, the backup home location register 150 and the additional service server 170 provide various additional services to the mobile communication terminal 100 in real time (S240). . In step S230, if the TCP / IP detachable server 160 does not detect the change of the IP address due to the backup switching in step S230, the TCP / IP detachable server 160 detects the change of the IP address due to the backup switching. It maintains its connection with the commercial home location register 140 until it is available.

The above description is merely illustrative of the technical idea of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and changes without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of the present invention but to describe the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The protection scope of the present invention should be interpreted by the following claims, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of the present invention.

As described above, according to the present invention, even if a failure occurs in the home location register that acts as a gateway for providing various additional services to the mobile communication terminal in connection with various additional service servers, backup switching to the backup home location register occurs. By the TCP / IP detachable server equipped with the TCP / IP interworking module, the additional service server and the backup home location register are quickly interlocked, thereby providing an additional service in real time without interruption.

Claims (9)

If a commercial home location register acting as a gateway fails and the backup is transferred to a backup home location register, the TCP / IP detachable server interworking the commercial home location register and the additional service server detects a change in the home location register IP address. In the backup switching method of the home location register to link the additional service server with the backup home location register, (a) detecting, by the backup home location register, a PKG (Package) operation and a failure of the commercial home location register providing an additional service to a mobile communication terminal in association with the additional service server; (b) transferring the backup home location register to the backup home location register when the PKG operation or failure is detected in step (a); (c) detecting, at the TCP / IP server, a change in the IP address due to a backup transfer from the commercial home location register to the backup home location register; And (d) if the change of the IP address is detected in step (c), the interworking of the supplementary service server and the commercial home location register is terminated, and the supplementary home server and the backup home location register are interlocked. Steps to Connect with Location Register Backup switching method of the home location register comprising a. The method of claim 1, wherein in step (a) The TCP / IP detachable server normally connects the commercial home location register and the supplementary service server to interwork with the commercial home location register and the supplementary service server. The method of claim 1, wherein in step (c) And the TCP / IP separation server receives the routing information including the IP address transmitted from the backup home location register to detect the change of the IP address. The method of claim 1, wherein in step (d) The TCP / IP detachable server terminates the connection with the commercial home location register, and connects with the backup home location register to enable interworking of the supplementary service server and the backup home location register to enable the When the backup is transferred to the backup home location register due to a PKG operation or a failure, various kinds of additional services may be prevented from being interrupted, and the various additional services may be interlocked by interworking the backup home location register with the additional service server. Backup switching method of the home location register, characterized in that for providing the mobile communication terminal in real time. A mobile communication terminal provided with various additional services, a wireless access network to wirelessly communicate data with the mobile communication terminal, a mobile communication switching station for efficiently operating the wireless access network, location control, call processing, and external operation processing of the mobile communication terminal. In a mobile communication system including a visitor location register (VLR) to perform and an additional service server for providing the various additional services, A commercial home location register which stores station number routing information of a subscriber existing in a mobile communication network, and serves as a gateway interworking with the additional service server providing the various additional services; A backup home location register which performs a mobile communication service in real time by performing a backup transfer with the commercial home location register when a failure occurs in the commercial home location register; And  If a failure of the commercial home location register occurs and backup switching to the backup home location register, the commercial home location register detects a change in the IP address due to the backup changeover to the backup home location register and backs up the additional service server. TCP / IP detached server to work with home locator Backup switching system of the home location register, comprising a. The method of claim 5, The commercial home location register backup switching system of the home location register, characterized in that for separating the TCP / IP interworking module from the commercial home location register and the TCP / IP detachable server. The method of claim 5, And the backup home location register separates the TCP / IP interworking module from the backup home location register and connects the TCP / IP detachable server. The method of claim 5, And the TCP / IP detachable server does not change the software according to the change of the software by the commercial home location register. The method of claim 5, And the TCP / IP detachable server detects a change in the IP address by receiving routing information including the IP address transmitted from the backup home location register.

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