KR20020052778A - Method for management of memory back up in back up HLR - Google Patents

Abstract

PURPOSE: A method for operating the memory backup of a backup HLR(Home Location Register) is provided to manage SLD(System Load Data), managed in the form of a file at an exiting backup HLR, through a memory so as to incorporate modified data into the memory in real time. CONSTITUTION: A commercial HLR transmits SLD and a dirty table, stored in its main memory, to a client, or a concurrent processor. The concurrent processor of the commercial HLR receives a configuration file. The data of the concurrent processor of the commercial HLR are transmitted to the concurrent processor of a backup HLR. The concurrent processor of the backup HLR receives a configuration file. The data of the concurrent processor of the backup HLR are transmitted to the main memory of the backup HLR. The first through the second SLD stored in the main memory of the backup HLR are transmitted to a disk.

Description

Memory backup operation method of backup home location register {Method for management of memory back up in back up HLR}

The present invention relates to a memory backup operation method of the backup home location register, and more particularly, to manage the change data received from the commercial home location register in real time by managing the SL (SLD) stored in the form of a file in the backup in real time The present invention relates to a memory backup operation method of a backup home location register which minimizes service interruption due to a failure reflected in a memory.

1 is a schematic configuration diagram of a general mobile communication system.

As shown in FIG. 1, a mobile station (MS) 1 for transmitting and receiving data to and from a base station wirelessly, and a base station (BTS) for transmitting and receiving data to and from the mobile terminal 1 wirelessly (2), a control station (BSC: Base Station Controller) 3 for controlling the transmission and reception of data of the base station 2, and an exchange station for exchanging data between arbitrary terminals via the control station 4; A mobile switching center (MSC) 4, a CDMA network 5 which is connected to the mobile communication switch 4 and is a communication network for data communication, and an analog voice connected to the mobile communication switch 4 Public Switched Telephone Network (PSTN) 6, which performs telephone service, and a Home Location Register (HLR) 7, which is connected to the mobile communication switch 4 and stores subscriber information. do.

The operation of the general mobile communication system configured as described above is as follows.

The mobile terminal 1 transmits and receives data and voice by wirelessly interfacing with the base station 2 according to the IS-95 standard. The base station 2 exchanges information of the mobile terminal 1 with the control station 3 through a wired interface, and wirelessly transmits and receives voice and data with the mobile terminal 1 through an interface according to the IS-95 standard. do. In other words, the base station 3 is responsible for the call function, radio signal transmission and reception, radio resource management, visual information management between the mobile station and the base station, error detection and statistical information collection and reporting, packet routing, and power control. do.

And the control station (3) is located between the base station (2) and the mobile communication exchange (4), the data communication with the base station 2 in the form of a voice packet via a wire, and the operator with the mobile communication exchange (4) It features a man-machine interface and GPS reception for matching.

Next, the mobile communication switch 4 performs an interworking interface between the mobile communication exchange and the mobile communication exchange period, fixed subscribers other than the mobile communication exchange, and other mobile communication elements, and other networks such as ISDN and PSDN. In addition, the mobile communication switch including the functions of the cellular gateway switching system is a multi-processor structure that distributes functions and loads, and has a distributed control structure that is a two-stage hierarchical structure of a main processor and a sub-processor. The mobile communication switch 4 is connected to the CDMA network 5 and the PSDN network 6 to transmit and receive the corresponding data and voice.

The home location register (7) is connected to the mobile communication switch (4), stores subscriber information, and transmits the subscriber information to the mobile communication switch when a subscriber authentication request is made from the mobile communication switch (4) to perform subscriber authentication. Store location information of the other subscribers.

Meanwhile, as shown in FIG. 2, a system for backing up a subscriber database of the home location register 7 in preparation for a failure of a commercial home location register 7 operating in the field is called a backup home location register 8. do.

The reason for building such a system is to minimize service downtime due to a failure by switching to a backup home location register 8 in case of a failure of the commercial home location register 7.

Currently, the backup home location register 8 manages the data changed in the commercial home location register 7 as a system load data (SLD) 9 in the form of a file. It is possible to build.

Therefore, in the distributed environment, the subscriber data backup of the home location register system uses a method of transferring the changed parts of the SL to the backup home location register and storing them in a file format.

However, when the changed data is applied to the file type SL, the network load is inevitable, and in case of the failure of the commercial home location register, the file type SL is loaded into the memory even after the replacement of the backup home location register. There was a difficult problem operating.

Accordingly, an object of the present invention is to solve the problems according to the related art, and an object of the present invention is to manage the file data of the changed data by managing the SD stored in the form of a file in a conventional backup home location register in a memory. It is easy to apply to memory rather than to memory, and it can reduce network load relatively and backup changed data for convenient management by keeping changed parts of SL loaded in memory in real time or at regular intervals in file form. A memory backup operation method of a home location register is provided.

The memory backup operation method of the backup home location register according to the present invention for achieving the above object is characterized by the steps of establishing an initial memory backup system and transmitting subscriber SL of the commercial home location register to the backup home location memory; Updating the change history of each home location register with a predetermined period in a memory of a backup home location register; changing a signal point at a backup home location register when a failure occurs; And storing the SL of the disabled home location register in the form of a file and transferring it to the original home location register, and storing the memory SL of the backup home location register in the form of a file. .

1 is a schematic configuration diagram of a general mobile communication system,

2 is a flowchart illustrating a memory backup operation method of a backup home location register according to the prior art;

3 is a flowchart illustrating a memory backup operating method of a backup home location register according to the present invention;

4 is a flowchart illustrating a large memory backup for each processor in the memory backup operation method of the backup home location register according to the present invention.

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

7: home location register,

8: Backup home location register.

Hereinafter, a preferred embodiment of a memory backup operation method of a backup home location register according to the present invention will be described with reference to the accompanying drawings.

3 is a flowchart illustrating a memory backup operating method of the backup home location register according to the present invention.

As shown in FIG. 3, a dirty table including an SLD, CLEAN_BIT: 0x00, DIRTY_BIT: 0x01, CDS_BIT: 0x02, FC_BIT: 0X04, and MAP_BIT: 0x08 stored in the main memory of a commercial home register is shown. ) Is sent to the concurrent processors, which are clients.

Here, the parallel processor of the commercial home location register is composed of a CDS backup, FC backup, MAP backup processor.

In addition, the parallel processor of the commercial home location register receives a configuration file.

Subsequently, the data of the parallel processor of the commercial home location register is transmitted to the parallel processor which is a server of the backup home location register.

Here, the parallel processor of the backup home location register is composed of first, second and third backup processors.

In addition, the parallel processor of the backup home location register receives a configuration file.

Subsequently, the data of the parallel processor of the backup home location register is transferred to the main memory of the backup home location register.

The main memory of the backup home position register is formed of first, second and third SL.

The first, second, and third SDs stored in the main memory of the backup home location register are transmitted to the disk.

Looking back at the large memory backup operating method of the backup home location register of Figure 3 as follows.

First, an initial memory backup system is constructed, and the subscriber SL of the commercial home location register is transferred to the backup home location memory.

Subsequently, the change history for each home location register is updated in a memory of the backup home location register with a predetermined period.

When a failure occurs, the backup home position register changes the signal point to transfer the backup.

Subsequently, after recovering from the failure, the backup home location register stores the SL of the failed home location register in the form of a file, and then transfers it to the original home location register.

At this time, memory backup is continued.

In particular, a task is performed to save the memory SL of the backup home location register in the form of a file in the form of a file.

4 is a flowchart illustrating a large memory backup for each processor in the memory backup operation method of the backup home location register according to the present invention.

As shown in FIG. 4, it is determined whether a backup cycle has been reached.

As a result of the determination, if the backup period is reached, only the page in which the corresponding dirty bit is set to on transmits the backup.

Then, the dirty bit corresponding to the transmitted page is reflected in the corresponding memory SL.

Then, it is reflected in the file SL on-line or periodically.

As described above, the present invention can minimize the service interruption due to a failure by reflecting the changed data received from the commercial home location register in real time by managing the SLD (SLD) to manage the storage in the form of a file in the backup. It has an effect.

In addition, the memory SL of the backup home location register may be made in the form of a file SL to deliver to a commercial home location register due to a failure.

Claims (2)

Establishing an initial memory backup system and transmitting subscriber SLs of a commercial home location register to a backup home location memory; Updating the change history for each home location register with a predetermined period in a memory of a backup home location register; Changing the signal point in the backup home location register in case of a failure to transfer the backup; Storing the SL of the faulty home location register in the form of a file in the backup home location register after the failure recovery and transferring to the original home location register; And storing the memory SL of the backup home location register as an SD in the form of a file. The method of claim 1, Determining whether or not the memory backup has been completed; Transmitting a backup only for pages in which a corresponding dirty bit is set to on if a backup cycle is reached as a result of the determination; Reflecting a dirty bit corresponding to the transmitted page to the corresponding memory SL; A method of operating a memory backup of a backup home location register, comprising the step of reflecting on-line and periodically the file SL.