JP2973685B2 - A common database duplication method for mobile communication systems - Google Patents

Abstract

PURPOSE:To maintain the service of a mobile communication system even if a common database is faulty by accumulating present-use subscriber data and standby subscriber data with an exclusive condition in the first and second database stations linked to a mobile communication exchange station. CONSTITUTION:Present-use subscriber data and standby subscriber data 4 and 5, and 7 and 6 are accumulated in the first and second common database stations 2 and 3 linked to the mobile communication exchange station 1 with the exclusive condition. The exchange station 1 accesses only data 4 and 7. Data 5 and 6 are updated by data 7 and 4 during an online operation. Even if one common database is faulty during the online operation, the service of the mobile communication system can be maintained by the duplex system of the database. Furthermore, a load is distributed to the other common database, and the occurrence of an overload can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a common database duplication system for a mobile communication system.

[0002]

Common database duplexing scheme of a conventional this type, has been a method of storage control duplicated data in the same apparatus.

[0003]

[Problems that the Invention is to Solve The conventional common database duplexing scheme, since a method of duplicating the data in the same apparatus, if damage or destruction of the device due to an external factor occurs, accessing the common database since all of the mobile communication switching center can not operate normally,
You will not be able to provide sufficient services to the subscribers, also there is a problem that does not have to spend a lot of time to operate a new common database stations.

[0004]

According to Means for Solving the Problems] The present invention, first a plurality of mobile communication switching center, and the second common database station
Of a connection between each other by a communication link, the mobile first subscriber data communication switching center, in a mobile communication system for storing the control to the second common database station, the initial state
Active subscriber data of the first common database station
Subscriber data of the data base and the second common database station
Sets the same contents and sets the current contents of the second common database station.
Waiting for subscriber data and the first common database station
The subscriber data has the same contents and the first common data.
Database station and the working subscriber data and the second common
The mobile communication with the active subscriber data of the database station
A common subscriber data signal system, the first, second common database station said first and standby subscriber data and working subscriber data obtained by dividing the same of the subscriber data,
The mobile communication switching center accumulates data under the opposite condition between the second common database stations. The mobile communication switching office can control access to only the working subscriber data of the first and second common database stations, and The common database station can transfer the updated active subscriber data to the other common database station, and the common database station receiving the updated active subscriber data has transferred the standby subscriber data. Duplicating a common database of a mobile communication system characterized by updating with the working subscriber data
A scheme is obtained .

[0005] The first and second common databases are
The other common database station when a fault occurs in one of the common database station of scan station receives through to abnormal signal the communication link between the mobile communication switching center, the subscriber data of the mobile station movement, characterized in that the switching to all the waiting subscriber data the subscriber data of the common database station during simultaneous failure and all working subscriber data
A common data duplication scheme for the communication system is obtained .

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a block diagram of a mobile communication system showing one embodiment of the present invention.

The mobile communication system of this embodiment includes a mobile communication switching center 1 and common database stations 2 and 3. The common database station 2 includes active subscriber data 4 and standby subscriber data 5, and performs mobile communication. The current subscriber data 4 is communicated with the local exchange 1 via the communication link 8. Further, the common database station 3 includes the active subscriber data 7 and the standby subscriber data 6, and communicates the active subscriber data 6 with the mobile communication exchange 1 via the communication link 9.

[0008] In the initial state, the waiting subscriber data 6 and working subscriber data 4 sets the same contents, also stand subscriber data 5 and working subscriber data 7 to set the same contents. The two active subscriber data 4 and the active subscriber data 7 are used as common subscriber data of the mobile communication system.

The working subscriber data 4 and 7 include data updated in real time by communication with the mobile switching center 1. The updated current subscriber data 4 is transferred to the standby subscriber data 6 via the communication link 10.
The standby subscriber data 6 updates the stored information with the information of the active subscriber data received via the communication link 10. Therefore, after the update, the contents of the active subscriber data 4 and the standby subscriber data 6 match.

[0010] Another active subscriber data 7 to be updated
Is transferred to the standby subscriber data 5 via the communication link 11. The standby subscriber data 5 updates the stored information with the information of the active subscriber data 7 received via the communication link 11. Therefore, after the update, the contents of the active subscriber data 7 and the standby subscriber data 5 match.

For example, if a failure occurs in the common database station 2 during online operation and communication of the current subscriber data 4 does not operate normally, the common database station 3 reports the abnormality of the common database station 2 to the communication links 8 and 9. Receive the above abnormal signal and know. The common database station 3 switches the standby subscriber data 6 having the same content as the current subscriber data 4 to the current one, and notifies the mobile switching center 1 of the result via the communication link 9. Thereby common database station 2
Is disconnected from the mobile communication system and goes offline, and the common database station 3 operates online as the only common database station of the mobile communication system.

[0012]

As described above, according to the present invention, the same subscriber data is divided into working subscriber data and standby subscriber data in two common database stations, and the respective working subscriber data and standby subscriber data are divided. Data is stored between two common database stations under contradictory conditions so that the mobile switching center can access only the working subscriber data of the common database station, and the updated working subscriber is automatically transferred to the other common database station. transferred to the other common on the database station updates the waiting subscriber data in the transferred current for subscribers data, one of the common subscriber database data station and all active subscriber data simultaneously other common database Since all station subscriber data is switched to standby subscriber data, the common database station operating online becomes an obstacle. It can maintain the mobile communication system-wide services. Further, when the load is concentrated on one common database station, the load can be distributed to the other common database station.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of a common database duplication method for a mobile communication system according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mobile switching center 2, 3 Common database station 4, 7 Working subscriber data 5, 6 Standby subscriber data 8, ... 11 Communication link

Continuation of the front page (51) Int.Cl. ⁶ identification code FI H04Q 7/26 7/30 (58) Fields investigated (Int.Cl. ⁶ , DB name) H04Q 3/545 G06F 12/00 531 G06F 12 / 16-12/16 340 H04M 3/00 H04M 3/22 H04M 3/42-3/58 H04Q 7/20-7/38

Claims (2)

(57) [Claims] 1. A connecting a plurality of mobile communication switching center and the first, between each other and the second common database station communication link,
The subscriber data of the mobile switching center is stored in the first, second
In a mobile communication system in which accumulation is controlled in a common database station, the first common database is initialized in an initial state.
Station subscriber's working subscriber data and said second common database
The standby subscriber data of the station has the same contents and the second
Active subscriber data of a communication database station and the first common
The standby subscriber data of the database station must have the same contents.
And the working subscriber data of the first common database station.
Data and the working subscriber of the second common database station
Data and common subscriber data of the mobile communication system.
And, wherein the first, second common database station said the current subscriber data and standby subscriber data obtained by dividing the same of the subscriber data first, back between the second common database station
Accumulated under the opposite conditions, the mobile communication switching center can access-control only the working subscriber data of the first and second common database stations, and the first and second common database stations are updated. Active subscriber data can be transferred to the common database station of each other, and the common database station that has received the updated active subscriber data updates the standby subscriber data with the transferred active subscriber data. A common database duplication method for a mobile communication system. 2. The first and second common database stations,
Other when a fault occurs in the inner one of the common database station
Said communication link and through the receiving the abnormal signal, the common database station during simultaneous failure to all the subscriber data of the own station working subscriber data between the square is the common database station the mobile communication switching center 2. The method according to claim 1, wherein all the subscriber data are switched to standby subscriber data.