KR100259854B1 - A method of storage and searching of the subscriber information in the paging system - Google Patents

Abstract

PURPOSE: A method for storing and searching for subscriber information in a paging system is provided to store subscriber information in subscriber boards in a paging system comprised of a master subscriber board and a plurality of slave subscriber boards. CONSTITUTION: If a subscriber number(aaa-bbbb) is inputted(110), a paging system comprised of a master subscriber board and a plurality of slave subscriber boards searches a prefix table for an identical prefix number(aaa) using the prefix number of the inputted subscriber number(120). In case that the inputted prefix number is not defined, the paging system outputs an invalid message(130). If the inputted prefix number is defined, the paging system searches a subscriber bit map, taking the post number(bbbb) as an index(140). In case that the bit of a post number location is not set up as '1', the paging system judges that the subscriber has not registered for the system yet(150). If the subscriber is registered in the system, the paging system looks for a subscriber board location(c), a subscriber database group location(d) and a subscriber information location at a post table by the post number(bbbb)(160).

Description

How to Store and Retrieve Subscriber Information in Paging Systems

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of storing and retrieving a subscriber database of a paging system. Particularly, the present invention relates to a local random access memory (Local Random Access Memory) of a subscriber board by analyzing a subscriber number. The present invention relates to a method of finding subscriber information existing in RAM).

A paging system is a system that provides various pager services wirelessly to a pager. The paging system receives call data from a paging terminal for calling a base station for each cell, which is an allocated area, and then calls the page data. The radio page signal is sent to the pager of the area.

Each base station must simultaneously transmit call data for a radio call signal, in order to prevent a pager terminal existing in an overlapping area of a base station cell area from receiving the same paging call multiple times.

A general paging system may be divided into a terminal portion that generates call data based on information received from a subscriber, and a base station portion that receives the call data from the terminal and emits radio frequency to a corresponding pager.

Here, the base station part receives the call data from the terminal, combines it according to the protocol in use, and transmits the call data to the transmitter in synchronization with the absolute time information (reference clock signal) received from the GPS receiver for simultaneous transmission of the call data. A controller portion; It receives the call data from the controller, modulates it into radio frequency, and divides it into a transmitter part which launches with the corresponding pager.

The paging system configured as described above manages information on subscribers requesting service. The subscriber information of the paging system includes the subscriber's Electronic Serial Number (ESN) and Directory Number, International Mobile Station Identification, User Profiles, and Current Location. Manage your back.

These subscriber information are registered in the system as a database, and are registered, deleted, and output as necessary. For this task, the paging system stores and manages subscriber information in a storage device. When performing a service in a paging system, subscriber information for all calls is retrieved from storage.

In this case, the system is overloaded, resulting in shortening the life of the storage device. Therefore, all subscriber information is stored in several subscriber boards with a large amount of RAM, and then the subscriber information is retrieved from the subscriber board when the service is performed. Accordingly, there is a need for a method of locating required subscriber information without finding subscriber information as a whole.

The subscriber information according to the prior art includes a prefix table, a subscriber bit map, and a subscriber database. If service is required by the subscriber, the subscriber's location is found in a fixed subscriber database group associated with the station number table.

However, in the prior art configured as described above, it is necessary to secure a fixed database for 10,000 subscribers (0000 to 9999) per station number. From the system, unnecessary resources are lost in a limited station number. That is, the problems of the prior art are as follows.

First, a large amount of capacity is required to store subscriber information. Therefore, various storage devices (hard disks, etc.) are used. When performing a service search for a memory device storing subscriber information each time, problems such as overload of the system and shortening of the life of the memory device occur.

Second, in the case of the exchange system, the number is analyzed for every digit of the subscriber number. This number analysis requires a large amount of analysis tables. However, since the paging system is a system that operates a small amount of subscriber information, such a large capacity analysis table cannot be used.

Third, since the subscriber information of 10,000 subscribers per station number is connected, there is no choice but to use a limited station number according to the system capacity. In addition, since the subscriber capacity of the system and the station number must match, system memory, that is, subscriber information cannot be managed efficiently.

Accordingly, the present invention provides a method for storing subscriber information of a paging system for storing subscriber information in a subscriber board in a paging system consisting of a master subscriber board and a plurality of slave subscriber boards in order to solve the above problems. A second object is to provide a subscriber information retrieval method of a paging system configured to retrieve subscriber information using a fixed station number table and a post table.

1 is a structural diagram of a subscriber board according to the present invention;

2 is an input / output diagram illustrating a process of analyzing a subscriber number according to the present invention.

3 is a block diagram of a station number table according to the present invention.

4 is a configuration diagram of a post table according to the present invention.

5 is a block diagram of a subscriber bitmap according to the present invention;

6 is a flowchart illustrating a subscriber information retrieval method according to the present invention;

One preferred embodiment of the present invention devised to achieve the first object,

In storing subscriber information used to provide services in a paging system,

A station number table storing post table position and station number information using the station number of the subscriber number as an index;

A post table storing subscriber information positions using the post number of the subscriber number as an index;

A subscriber bitmap storing whether a subscriber having a corresponding subscriber number is registered as one bit;

Stores subscriber information by dividing it into a subscriber database.

In one embodiment of the present invention, the station table preferably stores a post table position for 10,000 subscribers per station table,

Preferably, the subscriber bitmap is composed of one block per station number.

The one block is preferably composed of 10,000 bits corresponding to each post number,

Preferably, the post table stores subscriber information by subscriber board location, subscriber database group location, and subscriber information location. The subscriber database group is preferably configured by one group per station number. Preferably stores subscriber information for 10,000 subscribers, and the subscriber database preferably accommodates subscriber information having different station numbers by one post table.

In addition, a second embodiment of the present invention for achieving the second object,

Receiving a subscriber number from the system;

A second step of searching for a corresponding station number table using the station number of the subscriber number as an index;

A third step of finding the position of the post table from the station number table if the corresponding station number table exists;

A fourth step of confirming whether or not the corresponding subscriber is registered by using the post number of the subscriber station number as an index;

A fifth step of finding the location of the subscriber information by using the post number of the subscriber station number as an index of the post table if the subscriber is registered; And

And a sixth step of reading the subscriber information of the found location and using it for the service.

In the second embodiment of the present invention, it is preferable to output an invalid message if there is no station number table for the entered subscriber number.

In the fourth step, it is preferable to confirm registration by searching a subscriber bitmap using the input subscriber number as an index.

Preferably, the subscriber bitmap is composed of one block per station number, and the one block is preferably composed of 10,000 bits corresponding to each post number.

If the subscriber of the entered subscriber number is not registered, it is preferable to output the unregistered subscriber message.

The post table preferably stores the location of the subscriber information separately into the location of the subscriber board, the location of the subscriber database group, and the location of the subscriber information in the subscriber database group.

The subscriber information in the paging system is retrieved by the subscriber's registration and the location on the subscriber board by the subscriber information storage and retrieval method according to the present invention. The registration of the subscriber and the position on the subscriber board are searched by the station number aaaa and the post number bbbb of the subscriber number aaaa-bbbb.

1 is a structural diagram of a subscriber board according to the present invention. As shown, a master board including a small amount of RAM and a central processor unit (CPU) connected to a storage device (hard drive) using a small computer system interface (SCSI); It consists of a plurality of slave subscriber boards that transmit and receive information to and from the master board using a dual port RAM (DPRAM).

The slave subscriber board typically contains subscriber information for 100,000 subscribers. Therefore, a paging base station having a subscriber board configured as shown in FIG. 1 can process a service for 300,000 subscribers. If the number of subscribers is increased, the service is extended by increasing the number of slave subscriber boards.

Subscriber information is downloaded from the master board's storage to local RAM on the subscriber board as the system initially boots up. The subscriber information finds the registration status of the subscriber information and the position on the subscriber board required by the subscriber search method in the present invention.

The present invention is composed of a station number table, a post table, a subscriber bitmap, and a subscriber database. The subscriber database is located on the slave subscriber board as shown in FIG. In the service state, the subscriber number entered in paging is divided into a station number table, a post table, and a subscriber bitmap. Then, for each separated element, the location of the subscriber board, the location of the subscriber database group, and the location of the subscriber information are found.

2 is an input / output diagram illustrating a process of analyzing a subscriber number according to the present invention. As shown, the subscriber number consisting of the station number (aaa) and post number (bbbb) is analyzed to find the location of the subscriber board, the location of the subscriber group, and the location of the subscriber information. First, search the station table through the station number.

3 shows a configuration diagram of a station number table according to the present invention. As shown in the figure, the subscriber's station number is used as an index to locate the post table and the station number information. Each station table data corresponds to a subscriber information group having the same station number. Since the number of station number table can be determined according to the operator's setting, up to 1,000 numbers for three-digit station numbers and up to 10,000 numbers for four-digit station numbers are generated. However, the paging system can use a limited station number assigned by the service provider.

4 shows a configuration diagram of a post table according to the present invention. As shown, the subscriber board position, the subscriber database group position, and the subscriber information position can be found for the post table indexed with the corresponding post number.

The subscriber database contains the actual subscriber information required for the service. Each database manages by assigning 10,000 subscribers to one group. The subscriber database according to the present invention can accommodate subscriber information having different station numbers by one post table.

The subscriber bitmap is used to check whether the subscriber is registered in the system. 5 is a block diagram of a subscriber bitmap according to the present invention. As shown, the subscriber bitmap consists of 10,000 bits per block. Blocks exist as many as station numbers. Each block has a post number bbbb of the subscriber number as an index, and if a subscriber having the subscriber number is registered, the bit is set to '1'.

6 is a flowchart illustrating a subscriber information retrieval method according to the present invention. Hereinafter, the operation of the present invention will be described in detail.

First, a subscriber number (aaa-bbbb) is input (110). The station number of the input subscriber number is first searched for the same station number (aaa) by searching the station number table (120). If the input station number (aaa) is not defined, an invalid message is output (130).

If the station number is defined, the subscriber bitmap is searched for using the post number bbbb as an index (140). If the bit of the corresponding post number position is not set to '1', it is determined that the subscriber is not registered in the system (150).

If the subscriber is registered in the system, the subscriber board position (c) and the subscriber database group position (d) and the subscriber information position (e) in the subscriber database group are found in the post table by the post number bbbb (160).

As described above, with respect to the subscriber having the corresponding subscriber number, the location of the subscriber board and the subscriber group can be known. In the case of registered subscribers, it is possible to directly find the location of the subscriber information in the subscriber database group identified in the post table without finding the information of all the subscriber groups.

According to the present invention operating as described above, in a system that operates a small amount of subscriber information such as a paging system, the subscriber information can be managed using a small capacity subscriber analysis table, so that the design of the system is easy. In addition, it is possible to search for subscriber information more effectively by searching the station number table and the post table without finding all the subscriber information when the service is generated for the subscriber.

Claims (15)

In storing subscriber information used to provide services in a paging system, A station number table storing post table position and station number information using the station number of the subscriber number as an index; A post table storing subscriber information positions using the post number of the subscriber number as an index; A subscriber bitmap storing whether a subscriber having a corresponding subscriber number is registered as one bit; A subscriber information storage method of a paging system, which stores the subscriber information in a subscriber database. 2. The method of claim 1, wherein the station number table stores a post table position for 10,000 subscribers per one station number table. 2. The method of claim 1, wherein the subscriber bitmap consists of one block per station number. 4. The method of claim 3, wherein the one block consists of 10,000 bits corresponding to each post number. The method of claim 1, wherein the post table divides and stores subscriber information by a subscriber board location, a subscriber database group location, and a subscriber information location. 6. The method of claim 5, wherein the subscriber database group consists of one group per station number. 7. The method of claim 6, wherein said one group stores subscriber information for 10,000 subscribers. 6. The method of claim 5, wherein the subscriber database accommodates subscriber information having different station numbers by one post table. Receiving a subscriber number from the system; A second step of searching for a corresponding station number table using the station number of the subscriber number as an index; A third step of finding the position of the post table from the station number table if the corresponding station number table exists; A fourth step of confirming whether or not the corresponding subscriber is registered by using the post number of the subscriber station number as an index; A fifth step of finding the location of the subscriber information by using the post number of the subscriber station number as an index of the post table if the subscriber is registered; And And a sixth step of reading the subscriber information of the found location and using it for the service. 10. The method according to claim 9, wherein an invalid message is output if there is no station number table for the entered subscriber number. 10. The method of claim 9, wherein the fourth step confirms registration by searching a subscriber bitmap using the entered subscriber number as an index. 12. The method of claim 11, wherein the subscriber bitmap consists of one block per station number. 13. The method of claim 12, wherein the one block consists of 10,000 bits corresponding to each post number. 10. The method according to claim 9, wherein an unregistered subscriber message is output if a subscriber of the entered subscriber number is not registered. 10. The method of claim 9, wherein the post table stores the location of the subscriber information separately into the location of the subscriber board, the location of the subscriber database group, and the location of the subscriber information in the subscriber database group.

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