KR100203361B1 - Mobile communication exchanger - Google Patents

Abstract

The present invention relates to a location registration control method in a VLR function of a Global Service for Mobile Telecommunication (GSM). In the location registration control method of the present invention, first, the VLR function receives the location registration request of the mobile subscriber, and determines whether the VLR is accessible. Then, if it is not accessible, the VLR function receives the mobile subscriber identifier from the location registration control unit of the requesting exchange to transmit the subscriber identifier to the location registration control unit of the exchange. Next, the authentication data transmission request is transmitted to the home location register (HLR) connected to the exchange with the received mobile subscriber identifier, and upon receipt of the authentication data, a mobile subscriber record is generated in the database of the exchange, When the mobile subscriber record generation is completed, the location registration request is sent to the subscription origin registration unit. When the mobile subscriber location information of the subscriber registration register is changed and mobile subscriber profile information is received from the subscriber registration register, the mobile subscriber information is changed and the mobile subscriber data reception completion signal is transmitted to the subscriber registration register. Next, the location registration result signal is received from the subscription origin registration unit, and then the location registration result is transmitted to the location registration control unit of the exchange.

Description

Location Registration Control Method in Mobile Switching System

1 is a block diagram of a subsystem of a mobile switching center to which the present invention is applied.

2 is a flowchart of a location registration method in a mobile communication switch according to the present invention.

* Explanation of symbols for main parts of the drawings

10: matching unit 12: position registration control unit

14: MAP (Mobile Application Register) function

16: VLR (Visitor Location Register) function

18: Database

The present invention relates to a mobile communication switch, and more particularly, to a method of controlling location registration by obtaining an identifier of a mobile subscriber when a previous VLR is inaccessible in controlling a location registration function in a mobile communication switch.

The present invention implements the contents defined in the GSM (Global Service for Mobile Telecommunication) 09.02 standard, which is not known in detail about the conventional location registration control method.

Accordingly, an object of the present invention is that when a mobile subscriber exchange registers a location where a previous VLR is inaccessible, when a mobile subscriber moves from a location controlled by another VLR to a location area controlled by the mobile subscriber station, the VLR serving a new mobile subscriber is a mobile station ( Mobile communication that performs location registration by requesting mobile subscriber IMSI to previous VLR with Location Area Identification (LAI) signal and Temporary Mobile Station Identity (TMSI) signal received from MS (Mobile Station) The present invention provides a method for controlling location registration at an exchange.

In order to achieve the above object, a method of controlling the location registration of the subscriber in the mobile communication switch according to the present invention is:

Receiving a location registration request of a mobile subscriber by a visitor location register (VLR) function of the exchange;

Determining whether the VLR is accessible;

Requesting, by the VLR function unit, to transfer the subscriber identifier to the location registration control unit of the exchange if it is inaccessible;

Receiving, by the VLR function unit, a mobile subscriber identifier from the location registration controller;

Sending an authentication data transfer request to a Home Location Register (HLR) connected to the exchange with the received mobile subscriber identifier;

Generating a mobile subscriber record in a database of an exchange when the VLR functional unit receives authentication data, and transmitting a location registration request to the subscription remote registration unit when the mobile subscriber record generation is complete;

Changing mobile subscriber location information of the subscriber remote registration unit and changing mobile subscriber information when receiving mobile subscriber profile information from the subscriber remote registration unit; And

If the mobile subscriber information is successfully changed, transmitting the mobile subscriber data reception completion signal to the subscription remote registration unit, receiving a location registration result signal from the subscription remote registration unit, and then transmitting the location registration result to the location registration control unit of the exchange. do.

The determining whether the VLR is accessible may include extracting a predetermined signal from a location registration request message when the VLR function receives a location registration request of a mobile subscriber; And determining whether the signal link to the VLR to which the location region identification signal belongs is location information of another VLR region. In particular, the predetermined signal extracted from the mobile subscriber's location registration request is a mobile subscriber's temporary mobile station identification (TMSI) signal and a location area identification (LAI) signal.

Hereinafter, with reference to the accompanying drawings will be described an embodiment of the present invention;

1 is a block diagram of a subsystem of a mobile communication system for performing a location registration control method according to the present invention. As shown in FIG. 1, the system includes a matching section 10, a location registration control section 12, a MAP function section 14, a VLR function section 16, and a database 18. FIG.

The matching unit 10 matches the base station (BSC) with the location registration control unit 12, and the location registration control unit 12 analyzes the location registration request signal received from the matching unit 10 to provide a VLR function unit. The location registration request is sent to (16), and the location registration result is received and transmitted back to the matching section 10. The MAP function unit 14 is externally connected to a home location register (HLR), and internally connected to the location registration control unit 12 and the VLR function unit 16 to the VLR function unit 16. Provides location registration service in conjunction with

The VLR function unit 16 receives the location registration request received from the location registration control unit 12, interworkes with the subscription registration unit through the MAP function unit 14, and provides a location registration service to be described later using the database 18. do.

Hereinafter, with reference to Figure 2 will be described a method of the position registration control method of the present invention.

2 shows the procedure of the position registration control method of the present invention made in the position registration control unit 12, the MAP function unit 14, the VLR function unit 16, and the database 18. As shown in FIG.

In step S12, the VLR function unit 16 receives the location registration request of the mobile subscriber via the location registration control unit 12.

In step S14, when the VLR function unit 16 receives the location registration request of the mobile subscriber, it extracts the mobile subscriber's temporary mobile station identification (TMSI) signal and the location area identification (LAI) signal from the location registration request message, and the location area. It is determined whether the identification (LAI) signal is the location information of another VLR region and the signal link to the VLR to which the corresponding location region identification signal belongs is not available. If not, the process proceeds to step S16. Proceed to

In step S16, when the location registration request of the mobile subscriber is another location area identification signal and is inaccessible in step S14, the VLR function unit 16 requests the mobile subscriber identifier to be transmitted to the location registration control unit 12. do.

In step S18, the VLR function unit 16 receives the mobile subscriber identifier from the location registration control unit 12, and in step S20, the authentication data transmission request is sent to the HLR unit with the received mobile subscriber identifier.

When the VLR function unit 16 receives the authentication data in step S22, in step S24, a mobile subscriber record is generated in the database 18, and when generation of the mobile subscriber record is completed, an HLR location registration request is sent to the HLR unit. Transmit (step S26).

In step S28, mobile subscriber location information of the HLR is changed, and when mobile subscriber profile information is received from the HLR unit, mobile subscriber information is changed in step S30.

In step S32, if the mobile subscriber information is successfully changed, the mobile subscriber data reception completion signal is transmitted to the HLR matching unit. In step S34, the HLR boot location registration result signal is received, and then in step S36. Send the location registration result to the registration control unit.

Claims (3)

CLAIMS 1. A method of controlling a location registration of a subscriber in a mobile communication switch, comprising: receiving, by a visitor location register (VLR) function, a location registration request of a mobile subscriber; Determining whether the VLR is accessible; Requesting, by the VLR function unit, to transfer the subscriber identifier to the location registration control unit of the exchange if it is inaccessible; Receiving, by the VLR function unit, a mobile subscriber identifier from the location registration controller; Sending an authentication data transfer request to a Home Location Register (HLR) connected to the exchange with the received mobile subscriber identifier; Generating a mobile subscriber record in a database of an exchange when the VLR functional unit receives authentication data, and transmitting a location registration request to the subscription remote registration unit when the mobile subscriber record generation is complete; Changing mobile subscriber location information of the subscriber remote registration unit and changing mobile subscriber information when receiving mobile subscriber profile information from the subscriber remote registration unit; And when the mobile subscriber information is successfully changed, transmitting the mobile subscriber data reception completion signal to the subscription remote registration unit, receiving a location registration result signal from the subscription remote registration unit, and then transmitting the location registration result to the location registration control unit of the exchange. Position registration control method in a mobile communication switch comprising a. Determining whether the VLR is accessible: extracting a predetermined signal from a location registration request message when the VLR function receives a location registration request of a mobile subscriber; And determining whether the signal link to the VLR to which the location region identification signal belongs is location information of another VLR region and is not available. And a predetermined signal extracted from the location registration request of the mobile subscriber is a temporary mobile station identification (TMSI) signal and a location area identification (LAI) signal of the mobile subscriber.