KR20040029542A - Method for enhancement of subscriber profile data sameness HLR between VLR in mobile station center system - Google Patents

Abstract

PURPOSE: A method for improving data inconsistency between an HLR and a VLR in a mobile switching system is provided to change an MAP processing method in a receiving MSC without changing location information of a mobile station in an HLR, even when an error MAP is generated, and to transmit location inquiry information that is not updated to an originating MSC, thereby improving data inconsistency. CONSTITUTION: A VLR(200) transmits a location registration request message to an HLR(300) at the request of a subscriber mobile station(100), and enables a new location registration process to be executed(S10). An MSC stores location-registered time of the HLR(300) from a VLR(200) in relation to location registration, and requests a re-location registration process of the VLR(200) at certain intervals(S20). If the mobile station(100) attempts originating a call while the re-location registration information is not received from the mobile station(100)(S30), location registration information of a corresponding subscriber is automatically updated to the HLR(300), to complete a location registration process of the mobile station(100)(S40).

Description

Method for enhancement of subscriber profile data sameness HLR between VLR in mobile station center system in mobile switching system

The present invention relates to a method for improving data inconsistency generated between a Home Location Register (HLR) and a Visitor Location Register (VLR) in a mobile switching system. In particular, the present invention relates to a method of improving data inconsistency between HLR / VLR due to MAP loss and damage due to abnormality of NO.7 common line signaling when initial location registration and incoming call are required.

In general, location registration refers to a process of informing a base station of a mobile subscriber's location so that the base station can efficiently determine the location of the mobile subscriber when an incoming call is generated from the mobile subscriber. The mobile station identification number, calling channel slot, and other characteristics are transmitted to the base station.

At this time, the mobile telecommunication switching center keeps in the list of regions that the mobile subscriber has recently registered, and if the mobile subscriber enters an area not listed in the region list, the mobile telecommunication exchange performs registration again.

Upon completion of location registration, the mobile station and the mobile switching center add a new area to their list, and all existing areas set a new timer time and delete each according to the timer time.

On the other hand, the Visitor Location Register (VLR) is a device other than the Home Location Register (HLR) used by mobile switching centers to retrieve information for processing calls to or from visiting subscribers. Another location registration system.

The visitor location register (VLR) may or may not be located inside a mobile switching center, may be indistinguishable from any mobile switching center, and may serve more than one mobile switching center.

In addition, when there are distributed exchanges in each region, when a specific subscriber moves out of the home ECP (exchange unit) area to which he / she is affiliated, he moves to another ECP region. By creating a location registration record, it is possible to send and receive mutual service rights telephone information between ECPs so that calls can be made without any regional restrictions.

The visitor location register (VLR) is a record that is generated and destroyed from time to time as the subscriber moves between EPCs, and contains information on the current location of the subscriber who is converting the service right.

However, in the existing mobile switching system, when the initial location registration and the incoming call are required, there is an error of the incoming call due to the data inconsistency between the HLR / VLR due to MAP loss and damage due to the abnormality of the NO.7 common line signaling method.

That is, the data mismatch between HLR / VLR due to the loss of MAP due to the abnormality of NO.7 common line signaling method at the initial position registration 1) MAP processing data at the position registration of the power ON after the mobile terminal successfully registers the position in the power OFF state. ESN) is damaged (outgoing announcement when power is sent to the subscriber), 2) MAP processing data (ESN) is damaged when the mobile terminal registers the initial location (HLR: location failure due to ESN mismatching). ) Corresponds to this.

In addition, data mismatch between HLR / VLR due to loss of MAP due to abnormality of NO.7 common line signaling method during incoming request MAP process 1) If MSC ID is missing from RTL return result of incoming VLR 2) If the incoming VLR's RTL return result is an incoming rejection of an address (ADR), an unused number, or a power off (outgoing announcement when the incoming call is sent to the subscriber).

The present invention has been made to solve the above problems, and an object of the present invention is to eliminate data inconsistency between HLR / VLR due to MAP loss and damage caused by abnormality of NO.7 common line signaling when requesting initial location registration and incoming call. The improvement is to increase the integrity of the mobile telephone system.

As the technical idea for achieving the above object of the present invention

Transmitting a location registration request message from the VLR to the HLR according to the location registration request of the subscriber mobile terminal to perform new location registration;

A second step of requesting relocation registration to the VLR for a predetermined period from the mobile terminal; And

When the subscriber's mobile terminal attempts to make a call while receiving any relocation registration from the mobile terminal, the subscriber's location registration information is automatically updated by the HLR according to the relocation registration request of the VLR. A method of improving data inconsistency between a home location register and a visitor location register in a mobile switching system, comprising a third step of completing a location registration of a mobile terminal.

1 is a flowchart illustrating a method of improving data inconsistency occurring between HLR / VLR due to MAP loss at the time of initial position registration according to the present invention.

2 is a flowchart illustrating a method of improving data inconsistency between HLR / VLR caused by MAP loss in NO. 7 or higher during an incoming request MAP process according to the present invention.

<Description of Symbols for Major Parts of Drawings>

100: mobile terminal 200, 500: visitor location register (VLR)

300: home location register (HLR) 400: originating exchange (MSC)

600: destination exchange office (MSC)

Hereinafter, with reference to the accompanying drawings, the configuration and operation of the embodiment of the present invention will be described in detail.

1 is a flowchart illustrating a method of improving data inconsistency occurring between HLR / VLR due to MAP loss at the time of initial position registration according to the present invention.

First, according to the location registration request of the subscriber mobile terminal 100, the VLR 200 transmits a location registration request message to the HLR 300 to execute new location registration (S10).

At this time, the mobile switching center has already stored the location registered time from the VLR 200 to the HLR 300 in relation to the location registration, and the VLR 200 for a predetermined period (for example 120 minutes) from the mobile terminal 100. Resend registration request to (S20).

Thereafter, when the subscriber's mobile terminal 100 attempts to transmit while receiving any relocation registration from the mobile terminal 100 (S30), it corresponds to the HLR 300 according to the relocation registration request of the VLR 200. The location registration information of the subscriber is automatically updated to be updated (Up date) to complete the location registration of the mobile terminal 100 (S40).

That is, only the calling subscriber will automatically update the location registration information in response to a repeated re-registration request from the VLR 200 to the HLR 300.

For example, when the subscriber's mobile terminal 100 does not register a new location with the VLR 200 for a long period of 24 hours or more after registering the location with the VLR 200, the VLR 200 is limited to the subscriber's mobile terminal 100's location registration. The location registration information stored in) will be deleted automatically. This is to prevent the double generation of the VLR (200).

Therefore, the data inconsistency between the HLR and the VLR due to location registration / location deletion of the mobile terminal is eliminated.

2 is a flowchart illustrating a method of improving data inconsistency between HLR / VLR caused by MAP loss in NO. 7 or higher during an incoming request MAP process according to the present invention.

First, in response to the location information request (S10) of the mobile terminal from the originating MSC (exchange station) 400 to the HLR 500, the HLR 500 executes a location inquiry to the destination MSC (exchange station) 600 (S20). .

At this time, the destination MSC 600 operates to prevent the position lookup information of the HLR 500 from being updated in the power-off state when the switching center ID is missing due to a temporary MAP error during the position inquiry requested from the HLR 500. do.

That is, if the location lookup result is a call rejection or an unused number, the location lookup information of the HLR 500 is executed so as not to be updated in the power OFF state (S30).

More preferably, even when a temporary error MAP occurs when the mobile station locates the MSC 600, the MAP processing scheme is changed so that the HLR 500 can query the VLR again without changing the location information of the MS.

Thereafter, the HLR 500 transmits the location lookup information that is not updated to the originating MSC 400 (S40).

Therefore, it is possible to improve data inconsistency between HLR / VLR caused by MAP loss in the incoming request MAP processing process.

As described above, according to the method of improving data inconsistency between the home location register and the visitor location register in the mobile switching system according to the present invention, when the initial location registration and incoming call are requested, the MAP loss caused by the abnormality of the NO.7 common line signaling method is required. And by improving the data inconsistency between the HLR / VLR due to the damage can provide a higher success rate in the call of the mobile subscriber is required to register the location.

Claims (5)

Transmitting a location registration request message from the VLR to the HLR according to the location registration request of the subscriber mobile terminal to perform new location registration; A second step of requesting relocation registration to the VLR for a predetermined period from the mobile terminal; And When the subscriber's mobile terminal attempts to make a call while receiving any relocation registration from the mobile terminal, the subscriber's location registration information is automatically updated by the HLR according to the relocation registration request of the VLR. And a third step of completing the location registration of the mobile terminal by the data exchange between the home location register and the visitor location register. The home location register and the visitor location in the mobile switching system according to claim 1, wherein the location registration information is automatically updated according to the repetitive re-registration request from the VLR to the HLR for the calling subscriber in the third step. How to improve data mismatch between registrars. The location stored in the VLR only in the location registration of the subscriber's mobile terminal when the subscriber's mobile terminal does not register a new location with the VLR for a long period of 24 hours or more after registering the location with the VLR in the third step. A method for improving data inconsistency between a home location register and a visitor location register in a mobile switching system, wherein the registration information is automatically deleted. A first step of requesting location information of a mobile terminal from an originating MSC (exchange station) to the HLR; Performing a location inquiry from the HLR to a destination MSC (exchange station); A third step of operative not to update the position lookup information of the HLR in a power-off state when the switching center ID is missing due to a temporary MAP error during the position inquiry requested from the HLR in the called MSC; And a fourth step of transmitting the location lookup information which is not updated by the HLR to the originating MSC. The home location register according to claim 4, wherein in the third step, the location lookup information of the location lookup address is rejected and the number is not used, so that the location lookup information of the HLR is not updated to the power-off state. To improve data inconsistency between the user and visitor location register.