KR19990058835A - How to manage subscriber information in wireless paging system - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a subscriber information management method in a radio calling system, and more particularly, to a subscriber information management method for enabling subscriber number allocation having a plurality of spare station numbers in a radio calling system for transmitting calls to a plurality of terminals.

The present invention provides a mobile communication system having a plurality of subscriber information, comprising: a subscriber information database storing subscriber information, a subscriber location information database and subscriber number storing location information of subscriber information using an index of a post number of subscriber numbers; Subscriber information is managed using a station number database that stores the location information of the subscriber location information database using the station number as an index.

The present invention can provide flexibility in the use of the station number in the subscriber number allocation scheme by using the subscriber location information database so that the subscriber information block uses only as much memory as the subscriber capacity of the system for managing subscriber information in the radio calling system. It can also be applied to distinguish subscribers from various types of systems that manage many subscribers as well as wireless paging systems.

Description

How to manage subscriber information in wireless paging system

The present invention relates to a method of managing subscriber information in a paging system. In particular, the present invention relates to a subscriber number allocation having a plurality of free prefixes in a wireless paging system that transmits calls to a plurality of terminals. It relates to a subscriber information management method for.

A paging system is a system that provides various pager services wirelessly to a pager. Paging call data for page calls is provided for each cell, which is an allocated area. It receives from the terminal and transmits a radio call signal to the pager of the corresponding area.

A typical radio calling system can be divided into a terminal portion for generating call data based on information received from a subscriber and a base station portion for receiving the call data from the terminal and emitting radio frequency to a corresponding pager.

Here, the base station part receives the call data from the terminal again, 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 parts of the transmitter that launch into the pager.

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

As described above, the wireless paging system has a subscriber database that contains information about subscribers receiving wireless paging services. The wireless paging system that receives a call request for a particular subscriber through an exchange, etc. searches the subscriber database under management and obtains information necessary for the call of the subscriber, such as the address and frequency characteristics of the terminal.

Wireless paging systems can store tens of thousands to hundreds of thousands of subscriber information on hard disks. However, retrieval of subscriber information necessary for calling should be done in a fast and highly reliable manner without burdening the hardware. Therefore, a subscriber database can be downloaded to random access memory (RAM) to retrieve desired information.

The system uses the subscriber number to access subscriber information on RAM. The subscriber number generally uses 6-digit (aa-bbbb) or 7-digit (aaa-bbbb) decimal numbers. Assuming that the amount of memory required to store one subscriber information is A bytes, a system using a six-digit subscriber number has an A × (10 × 6) byte memory in order to directly store subscriber information on RAM. need. It is practically impossible to have a memory of this capacity. In order to solve the above problem, a method of restricting the prefix has been used.

First, the subscriber number is divided into a station number and a post number. For example, in the case of 6-digit subscriber number, the first two digits (aa) and the remaining four digits (bbbb) are distinguished. The first two digits are the station number, and the last four digits are the post number. The number of station numbers to be used is limited to "total number of subscribers / 10000 + 1".

The wireless paging system manages subscriber information by dividing the subscriber information into a station number database and as many subscriber databases as the number of station numbers to be used. Each subscriber database consists of 10000 records. One subscriber database is required for one station number. Through the structure as described above, one subscriber information may first determine a subscriber database to which the subscriber belongs by using the station number of the subscriber number, and store the subscriber information in a post number record of the corresponding subscriber database.

1 is a block diagram showing a subscriber information management method according to a conventional method. As shown in the figure, a corresponding subscriber database is determined using the first two digits of the entered subscriber number. It then retrieves the record for the post number of the subscriber number from the subscriber database.

As described above, the subscriber database management method according to the prior art requires a memory capacity equal to " station number x number of post numbers " In other words, when using a 4-digit post number, the memory capacity of "station number x 10000" is required. Therefore, the number of station numbers that can be used is too limited. That is, in the conventional subscriber information management method, when using a single station number when allocating a subscriber information block, a RAM having a capacity unit accommodating all subscriber information belonging to the station number must be used. Therefore, even if a part number is not used, the part's capacity should just be empty.

For example, a system that handles 50,000 subscribers requires 50 MB of RAM to actually get 500,000 subscribers. This requires the service user to allocate too restrictive subscriber numbers and to increase the number of station numbers used by the wireless paging service provider.

Therefore, in order to solve the problems described above, the present invention can quickly access subscriber information on RAM while giving flexibility in subscriber number assignment, and unregistered subscribers by reducing the allocation of subscriber information blocks by individual subscriber number units. An object of the present invention is to provide a subscriber information management method in a wireless paging system configured to reduce the amount of memory that is wasted.

1 is a block diagram showing a subscriber information management method according to a conventional method.

2 is a block diagram showing a subscriber information management method according to the present invention.

One preferred embodiment of the present invention, which was created to achieve the above object, in a mobile communication system having a plurality of subscriber information,

A subscriber information database storing subscriber information;

A subscriber location information database which stores location information of subscriber information using the post number of the subscriber number as an index; And

Subscriber information is managed using a station number database that stores location information of the subscriber location information database using the station number of the subscriber number as an index.

In one embodiment of the present invention, the capacity of the station number database is preferably "the number of usable station numbers x the size of the position data of the subscriber position information database."

The capacity of the subscriber location information database is preferably "number of post numbers x size of subscriber location information",

The capacity of the subscriber information database is preferably "the number of all available subscriber numbers x the size of subscriber information".

In addition, another preferred embodiment of the present invention for achieving the above object is a first step of retrieving the location data of the subscriber location information database for the corresponding station number from the station number database using the station number of the subscriber number as an index;

A second step of retrieving location data of subscriber information for the subscriber number from the subscriber location information database using the post number of the subscriber number as an index; And

And a third step of retrieving the subscriber information from the subscriber information database using the location data of the subscriber information.

The present invention divides and uses each subscriber database into a database storing subscriber location information and a database storing subscriber information. In the prior art, at the time of subscriber registration, the location of subscriber information in the subscriber file is determined by the post number. However, the present invention stores the subscriber information in an unused block of the subscriber data file and stores the storage location information in the subscriber location information database.

The subscriber location information database goes through as many subscriber location information blocks as the number of station numbers to be used. Each location information block has location information for all subscribers belonging to one station number. Thus, one subscriber location information block is composed of as many records as the maximum number of post numbers (10000 for 4 digits).

Each record stores the location information of the subscriber information in the subscriber information database for the subscriber having the station number of the location information block and the post number that is the index of the record. The subscriber location information database stores only index information in the subscriber database and whether or not the corresponding subscriber is registered, and therefore, each record has a size of 4 bytes.

2 is a block diagram showing a subscriber information management method according to the present invention. As shown, the subscriber location information database is first found using the station number of the subscriber number. Use the post number of the next subscriber number to find subscriber location information in the subscriber location information database. The actual subscriber information is found by searching the subscriber information database using the found subscriber location information.

If the above structure is used, even if the station number is added, only a relatively small amount of subscriber location information database needs to be added, thereby reducing the burden of using memory compared to the prior art.

In the case of using 10 station numbers and 50 station numbers in a system having a 100,000 subscriber capacity, a capacity of memory required to manage subscriber information is compared. Here, the size of the station number database is not significantly affected, so it is excluded from the calculation. Assume that the size of one subscriber information is 100 bytes.

First, the memory capacity of the prior art is calculated as follows. In case of using 10 station numbers, the required memory capacity is shown in Equation (1).

Number of station numbers (10) × Number of post numbers (10000) × Size of subscriber information (100)

= 10 megabytes

In addition, when using 50 station numbers, the memory capacity required by the conventional subscriber information management method is represented by Equation 2.

Number of station numbers (50) × Number of post numbers (10000) × Size of subscriber information (100)

= 50 megabytes

Now calculate the memory capacity according to the present invention. First, when 10 station numbers are used, the capacity of the memory required by the present invention using the subscriber location information database is shown in Equation 3. The size of one subscriber information is also assumed to be 100 bytes.

Number of station numbers (10) × Number of post numbers (10000) × Size of subscriber information (100) +

Number of station numbers (10) × Number of post numbers (10000) × Size of subscriber location information (4)

10.4 megabytes

In addition, when using 50 station numbers, the memory capacity required by the subscriber information management method according to the present invention is shown in Equation 4.

Number of station numbers (50) × Number of post numbers (10000) × Size of subscriber information (100) +

Number of station numbers (50) × Number of post numbers (10000) × Size of subscriber location information (4)

= 52 megabytes

As shown in Equations 1 to 4, the subscriber location information database used is not significantly affected by the number of station numbers used.

The present invention operating as described above uses the station number in the subscriber number assignment scheme using the subscriber location information database so that the subscriber information block uses only as much memory as the subscriber capacity of the system to manage subscriber information in the radio calling system. It can give you flexibility. It can also be applied to distinguish subscribers from various types of systems that manage many subscribers as well as wireless paging systems.

Claims (5)

In a mobile communication system having a plurality of subscriber information, A subscriber information database storing subscriber information; A subscriber location information database which stores location information of subscriber information using the post number of the subscriber number as an index; And A subscriber information management method in a radio calling system, wherein subscriber information is managed using a station number database storing location information of a subscriber location information database using the station number of the subscriber number as an index. The subscriber information storage method according to claim 1, wherein the capacity of the station number database is "the number of usable station numbers x the size of the position data of the subscriber location information database". The method of claim 1, wherein the capacity of the subscriber location information database is "number of post numbers x size of subscriber location information". The method of claim 1, wherein the capacity of the subscriber information database is "the number of all available subscriber numbers x the size of subscriber information". A first step of retrieving the location data of the subscriber location information database for the corresponding station number from the station number database using the station number of the subscriber number as an index; A second step of retrieving location data of subscriber information for the subscriber number from the subscriber location information database using the post number of the subscriber number as an index; And And retrieving the subscriber information from the subscriber information database using the location data of the subscriber information.