KR100319730B1 - Device and method for matching hlr and vlr subscriber information at function restoration of hlr - Google Patents

Abstract

The present invention provides an HLR function that enables the registration information of the corresponding HLR to match the information of the VLR managing the location information of the subscriber when the mobile switching center, in particular, the HLR which is an element of the mobile communication switching network is restored from the down state. The present invention relates to an HLR and VLR subscriber information matching device and method during recovery. According to the present invention, an HLR and VLR subscriber information matching device and method are provided. By managing only the mobile subscriber's data as uncertain data, it is possible to reduce the overload of the exchange during VLR location registration.

Description

DEVICE AND METHOD FOR MATCHING HLR AND VLR SUBSCRIBER INFORMATION AT FUNCTION RESTORATION OF HLR}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mobile communication exchange, and in particular, a VLR (Visitor) that manages the location information of a subscriber when the HLR (Home Location Register), which is an element of the mobile communication switching network, is restored from the down state. The present invention relates to a device and method for matching HLR and VLR subscriber information when recovering an HLR function which can be matched with information of a location registrar).

In the conventional HLR function recovery, HLR and VLR subscriber information matching method is shown in Figure 1, the recovery signal transmission step of transmitting a recovery signal (UnreliableRoamerDataDirective) to know that the HLR is recovered in a down state, and in the VLR A response signal transmission step of transmitting a response signal indicating that a recovery signal transmitted from an HLR is received to the HLR, and a VLR data update step of updating the registration data of all mobile subscribers registered from all HLRs with uncertain data in the VLR; It consists of.

That is, the conventional method of matching the HLR and VLR subscriber information when recovering the HLR function as described above recognizes the registration information transmitted from the HLR of all regions as uncertain data when all the HLRs are restored from the down state. By updating to receive, there was a problem that the system may become unstable due to overload when updating the registration information of all subscribers in the VLR.

Accordingly, the present invention is to solve the above conventional problems, the object of the present invention is to update the location registration information in the VLR only for mobile subscribers registered in the local HLR when the HLR is restored from the down state The present invention provides a device and method for matching HLR and VLR subscriber information when recovering an HLR function.

In order to achieve the above object, the HLR and VLR subscriber information matching device when recovering the HLR function of the present invention stores the location registration information of the mobile subscriber, and outputs a recovery signal when it is restored in a down state, and the HLR An LEI receiving the recovery signal from the UE and transmitting corresponding HLR signal point data; An LRU for receiving the signal point transmitted from the LEI and updating the registration data of all mobile subscribers which are registered from the restored HLR with uncertain data; A mobile station processing module for processing incoming / outgoing signals of mobile subscribers; It is characterized by consisting of an exchanger consisting of a control station matching module for matching the control station and the exchange.

On the other hand, HLR and VLR subscriber information matching method when recovering the HLR function of the present invention comprises a step of attempting to register a location at the local exchange by any subscriber to the local exchange in the other exchange; A location information and signal point storing step of storing location information and HLR signal points of a mobile subscriber station transmitted from another station switch in a local LLU; A recovery signal input determining step of determining whether a recovery signal is received from another station's HLR in the local LEI; A mobile subscriber searching step of searching for a mobile subscriber having the same information as the other station's HLR signal point by the local LRU when the recovery signal is inputted from another station's HLR in the determining whether the recovery signal is inputted; A VLR data updating step of searching for a subscriber in the local LRU and having a mobile subscriber having the same information, updating the registration data of the mobile subscriber registered in the local LRU with the uncertain data; A mobile subscriber information retrieval step of requesting subscriber information retrieval to perform call processing from the local exchange to the local LEI; An uncertain data setting determination step of retrieving the corresponding subscriber information from the local LRU and determining whether the local LRU is set to the uncertain data; A subscriber information request step of requesting subscriber information from the local LRU to the other station's HLR if the subscriber information is set to the uncertain data in the uncertain data setting determination step; And a subscriber information matching step of matching the subscriber information of the other country's HLR with the subscriber information of the local LRU.

1 is a signal flow diagram illustrating a method for matching HLR and VLR subscriber information when recovering a conventional HLR function;

2 is a block diagram showing a device for matching HLR and VLR subscriber information when recovering HLR function according to an embodiment of the present invention;

3 is a flowchart illustrating a method of matching HLR and VLR subscriber information when recovering HLR function according to an embodiment of the present invention;

4 is a signal flow diagram illustrating steps S100 and S200 in a method of matching HLR and VLR subscriber information when recovering HLR function according to an embodiment of the present invention;

5 is a signal flow diagram illustrating steps S300 to S500 in a method of matching HLR and VLR subscriber information when recovering HLR function according to an embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: HLR 200: exchanger

210: LEI 220: LRU

230: mobile station processing module 240: control station matching module

250: LLU

Hereinafter, an HLR and VLR subscriber information matching device and method during HLR function recovery according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram illustrating a device for matching HLR and VLR subscriber information when recovering HLR function, and FIG. 3 is a flowchart illustrating a method for matching HLR and VLR subscriber information when recovering HLR function.

4 is a signal flowchart showing steps S100 and S200 in the HLR and VLR subscriber information matching method when recovering the HLR function, and FIG. 5 is a signal flowchart showing steps S300 to S500 in the HLR and VLR subscriber information matching method when the HLR function is restored. to be.

As shown in FIG. 2, the present invention includes an HLR 100 and an exchanger 200. The exchanger 200 includes an LEI (Location Register External Interface) and a LRU (Location Register). Utility: subscriber data processing) 220, the mobile station processing module 230 and the control station matching module 240, the HLR (100) stores the location registration information of the mobile subscriber, while recovering from the down state When the recovery signal is output.

Meanwhile, the LEI 210 of the switch 200 receives a recovery signal from the HLR 100 and transmits corresponding HLR signal point data, and the LRU 220 is transmitted from the LEI 210. It receives a signal point and serves to update the registration information data of all mobile subscribers which are registered from the restored HLR 100 with uncertain data.

In addition, the mobile station processing module 2300 serves to process incoming / outgoing signals of mobile subscribers, and the control station matching module 240 serves to match a control station (not shown) with the switch 200. .

Hereinafter, the operation of the HLR and VLR subscriber information matching device when recovering the HLR function configured as described above will be described.

When the HLR (100) storing the location registration information of the mobile subscriber is outputted to the north, so that the normal function in the down state due to H / W situation or S / W operation, and outputs a recovery signal. The LEI 210 receives the recovery signal transmitted from the HLR 100 and transmits corresponding HLR signal point data.

Then, the LRU 220 receives the signal point transmitted from the LEI 210 to update the registration data of all mobile subscribers registered from the restored HLR 100 with uncertain data.

On the other hand, the mobile station processing module 230 processes the start / arrival signal of the mobile subscriber when the registration information of the mobile subscriber is updated as described above, and the control station matching module 240 controls the control station and the exchanger 200 (not shown). To match.

Next, the method of matching the HLR and VLR subscriber information when recovering the function of the HLR is described in detail. As shown in FIG. 4, in the non-shown foreign exchange where the mobile subscriber of Seoul is registered, any mobile subscriber is responsible for the region of Gyeonggi-do. When the mobile station 200 attempts to register the location in the local exchange 200 (S100), the location information of the mobile subscriber transmitted from the other station exchange in the local LLU (Location Register Update) 250 and The HLR signal point is stored (S200).

In this case, it is determined whether the local LEI 210 receives a recovery signal from the other station's HLR (S300), and if the recovery signal is input from the other station's HLR in the determining whether the recovery signal is input (S300), The local LRU 220 searches for a mobile subscriber having the same information as the other station's HLR signal point (S400).

In addition, if there is a mobile subscriber having the same information as that of the other country's HLR by searching for the mobile subscriber in the local LRU 220, the data of the mobile subscriber whose location registration is registered from the other country's HLR in the local LRU 220 is uncertain. To update to (S500).

Subsequently, when the local exchange 200 requests the subscriber information retrieval to call the local LEI 210 (S600), the local LRU 220 retrieves the corresponding subscriber information to determine whether the subscriber information is set to uncertain data. It is determined whether or not (S700).

In addition, in the step of determining whether or not to establish the uncertain data (S700), if the corresponding subscriber information is searched and set to the uncertain data, the local LRU 220 requests the subscriber information restored to the other station's HLR (S800), and the other station's HLR. The subscriber information of the subscriber and the subscriber information of the local LRU 220 is matched (S900).

On the other hand, if a recovery signal is not inputted from the other station's HLR in the recovery signal input determination step (S300), general call processing and periodic location registration is performed (S310), and the uncertain data setting determination step (S700). If the subscriber information is not set to the uncertain data, the process proceeds to the general function execution step to execute general call processing and periodic location registration.

As described above, the HLR and VLR subscriber information matching device and method when recovering the HLR function of the present invention manages only the data of the mobile subscriber associated with the corresponding HLR in the VLR that receives the recovery signal from the HLR recovered in the down state. In addition, it is effective to reduce the overload of the exchanger during the location registration of the VLR.

Claims (4)

A HLR for storing location registration information of a mobile subscriber and outputting a recovery signal when the mobile station recovers from a down state, a LEI (Location Register External Interface) for receiving a recovery signal from the HLR and transmitting corresponding HLR signal point data; A location register utility (LRU) for receiving the signal point transmitted from the LEI and updating the registration data of all mobile subscribers registered from the restored HLR with uncertain data; A mobile station processing module for processing incoming / outgoing signals of mobile subscribers; HLR and VLR subscriber information matching device, characterized in that consisting of a switch consisting of a control station matching module for matching the control station and the exchange. A location registration attempt step wherein any subscriber at another exchange switches to a local exchange and attempts to register a location at the local exchange; A location information and signal point storing step of storing location information and HLR signal point of a mobile subscriber station transmitted from another station exchange in a local location register update (LLU); A recovery signal input determining step of determining whether a recovery signal is received from another station's HLR in the local LEI; A mobile subscriber searching step of searching for a mobile subscriber having the same information as the other station's HLR signal point by the local LRU when the recovery signal is inputted from another station's HLR in the determining whether the recovery signal is inputted; A VLR data updating step of searching for a subscriber in the local LRU and having a mobile subscriber having the same information, updating the registration data of the mobile subscriber registered in the local LRU with the uncertain data; A mobile subscriber information retrieval step of requesting subscriber information retrieval to perform call processing from the local exchange to the local LEI; An uncertain data setting determination step of retrieving the corresponding subscriber information from the local LRU and determining whether the local LRU is set to the uncertain data; A subscriber information request step of requesting subscriber information from the local LRU to the other station's HLR if the subscriber information is set to the uncertain data in the uncertain data setting determination step; And a subscriber information matching step of matching the subscriber information of the other country's HLR with the subscriber information of the local LRU. 3. The HLR function according to claim 2, further comprising a general function execution step of executing general call processing and periodic location registration if a recovery signal is not input from another station's HLR in the recovery signal input determination step. How to match HLR and VLR subscriber information during recovery. The method of claim 2, wherein if the subscriber information is not set to the uncertain data in the step of determining whether to set the uncertain data, the method proceeds to the general function execution step.