JP5528992B2 - Telephone number management system and telephone number management method - Google Patents

Description

  The present invention relates to a telephone number management system that manages the storage state of telephone numbers in a plurality of databases that store telephone numbers for each number band.

  A telephone number assigned to a mobile phone or the like is usually assigned by a communication carrier (see, for example, Patent Document 1). In such an assignment, a plurality of (for example, three) telephone numbers that have not yet been assigned by the communication carrier may be presented to the user as candidates for assignment, and assignment may be performed by user selection. In addition, a service that allows a user to designate a desired telephone number in advance is provided.

JP 2004-193757 A

  When the phone number assignment method and service described above are applied, there are cases where the usage frequency of specific numbers is biased because there are popular and low popular numbers for the last four digits. Yes. The telephone number is defined in the form of “0AB-CDE-FGHJK”, but 0ABCDE is a value that is fixedly determined at the time of contract, and the last five digits (FGHJK) are values that are given randomly at the time of contract. The bias in the use of specific numbers occurs in the last 5 digits or less.

  By the way, in a mobile communication network, processing for providing a mobile communication function to each mobile phone is performed at a node called a database such as an HLR (Home Location Register). Usually, such a node is composed of a plurality of physical devices to which a mobile phone to be processed is assigned in order to distribute the processing load. In this apparatus, the mobile communication function assignment destination (storage destination) of the mobile phone is determined in advance for each of the last four digits of the telephone number.

  Allocation of mobile phones to each device is performed for each phone number. However, if the phone numbers are biased as described above, the processing load on the devices constituting the node is not properly distributed, and the mobile communication network Processing efficiency may be reduced. In order to cope with this problem, the accommodation destination of the mobile communication function of the cellular phone is periodically reviewed to equalize the processing load on the apparatus.

  However, since this operation is often performed for each large number band, the effect of equalizing the processing load is small. In addition, it takes time and effort to check the processing load on the device in a state where the device is offline (static). When the mobile phone is assigned many times in a short time, the assignment status of the mobile phone to each device changes abruptly, and there is a problem that uniformization processing cannot be performed immediately.

  The present invention has been made to solve the above-described problems, and provides a telephone number management system and a telephone number management method capable of making the processing load on the database more uniform and dynamically equalizing processing. For the purpose.

  In order to solve the above problems, a telephone number management system of the present invention is a telephone number management system that manages the storage state of telephone numbers in a plurality of databases that store telephone numbers for each number band, and includes a first threshold value and Threshold storage means for storing a second threshold, a number band usage rate that is a rate of a telephone number assigned to a subscriber among telephone numbers in a predetermined number band, and a telephone number in the predetermined number band Usage rate acquisition means for acquiring a database usage rate that is a rate of telephone numbers assigned to subscribers among all telephone numbers stored in the database to be used, and number band usage rate acquired by the usage rate acquisition means Is a first threshold that determines whether the database usage rate acquired by the usage rate acquisition unit is greater than the first threshold and is greater than the first threshold Comprising ultra determining means, if it is determined that the first threshold value superstate by the first threshold super determining means, and number range moving means for moving the telephone number of a predetermined number band to another database, the.

  In the telephone number management system of the present invention, the number band usage rate acquired by the usage rate acquisition unit is larger than the first threshold value, and the database usage rate acquired by the usage rate acquisition unit is higher than the second threshold value. When it is determined that the state is larger than the first threshold value, the telephone number of the predetermined number band is moved to another database. According to such a configuration, since the telephone number stored in the overloaded database is moved to another database, the processing load on the database becomes more uniform. In addition, since a telephone number in a predetermined number band is automatically moved when a certain condition is met, a uniform processing can be performed dynamically.

  The telephone number management system of the present invention includes at least a comparison database usage rate of a comparison database other than a database that stores telephone numbers of a predetermined number zone, and a comparison number zone usage rate of a number zone stored in the comparison database. It further comprises a replacement destination selection means for acquiring any one and selecting a replacement destination number band based on at least one of the comparison database usage rate and the comparison number zone usage rate, and the number zone moving means is a telephone of a predetermined number zone It is preferable to replace the number with the telephone number of the replacement destination number band selected by the replacement destination selection means. In this case, the processing load on the database can be made uniform efficiently.

  The replacement destination selection means selects a replacement destination number band from one of the number bands stored in the comparison database in which the comparison database usage rate is lower than the database usage rate of the database storing the telephone numbers in the predetermined number band. It is preferable to do. In this case, the processing load on the database can be made more efficient.

  The replacement destination selection means preferably selects a replacement destination number band from any number bands stored in the minimum database having the smallest comparison database utilization rate. In this case, the processing load on the database can be made more efficient.

  It is preferable that the replacement destination selection unit selects, as a replacement destination number band, a number band having the smallest comparison number band utilization rate among the number bands stored in any of the comparison databases. In this case, the processing load on the database can be made even more efficient.

  In the telephone number management system of the present invention, the threshold value storage means further stores a third threshold value, and acquires a database utilization rate and a comparison database utilization rate of a comparison database other than a database that stores telephone numbers in a predetermined number band. And a third threshold super-state determining means for determining whether a value obtained by subtracting the database usage rate of the minimum database having the smallest comparison database usage rate from the database usage rate is a third threshold super-status greater than the third threshold. Further, the number band moving means preferably moves the telephone number of the predetermined number band to the minimum database when it is determined that the third threshold value excess state determination means is the third threshold value excess state. In this case, after moving the telephone numbers in a predetermined number band to the minimum database, it is possible to avoid an increase in the database utilization rate of both databases, and to ensure uniform processing load efficiently.

  In the telephone number management system of the present invention, the threshold value storage means further stores a fourth threshold value, and two database utilization rates of the database and the minimum database when a telephone number in a predetermined number band is moved to the minimum database. , And a fourth threshold super state determination unit that determines whether the difference between the two database utilization rates is a fourth threshold super state that is greater than the fourth threshold. When it is determined by the state determination means that the state does not exceed the fourth threshold value, it is preferable to move the telephone number of a predetermined number band to the minimum database. In this case, after moving the telephone numbers in a predetermined number band to the minimum database, it is possible to avoid an increase in the database utilization rate of both databases, and to ensure uniform processing load efficiently.

  In the telephone number management system of the present invention, the threshold value storage means further stores the fifth threshold value, and the telephone number of the predetermined number band and the number band stored in the minimum database with the smallest comparison database utilization rate. To obtain the two database usage rates of the database and the minimum database when the telephone number of the minimum number zone with the smallest number zone usage rate is replaced, and the difference between the two database usage rates is larger than the fifth threshold A fifth threshold super-state determining unit that determines whether the threshold value exceeds five threshold values, and the number band moving unit determines that the fifth threshold super-state determining unit determines that the fifth threshold super-state determining unit is not in the fifth threshold super-state. It is preferable to replace the telephone number of the number band with the telephone number of the minimum number band. In this case, when the telephone number of the predetermined number band and the telephone number of the minimum number band are exchanged, the processing load can be surely made uniform efficiently.

  The number band moving means, when all the number bands stored in the minimum database are replaced with the telephone number of the number band stored in the minimum database and the telephone number of the predetermined number band, It is preferable to obtain information on the uniform number band where the database utilization rate is most uniform, and replace the telephone number of the predetermined number band with the telephone number of the uniform number band. In this case, when the telephone number of the predetermined number band is replaced with the telephone number of the number band stored in the minimum database, the processing load can be made more efficient.

  The predetermined number band in the utilization rate acquisition means is preferably a number band to which the most recently assigned telephone number belongs. In this case, every time a telephone number is assigned to a mobile phone, the processing load on the database is made uniform, so that the processing load can be made more uniform.

  By the way, the present invention can be described as the invention of the telephone number management system as described above, as well as the invention of the telephone number management method as follows. This is substantially the same invention only in different categories, and has the same operations and effects.

  That is, the telephone number management method according to the present invention includes a threshold storage unit that manages the storage state of telephone numbers in a plurality of databases that store telephone numbers for each number band and stores the first threshold value and the second threshold value. A telephone number management method provided for storing a number band usage rate, which is a rate of a telephone number assigned to a subscriber among telephone numbers in a predetermined number band, and a telephone number in the predetermined number band The usage rate acquisition step of acquiring the database usage rate, which is the rate of the telephone number assigned to the subscriber among all the phone numbers stored in the mobile phone, and the number band usage rate acquired in the usage rate acquisition step are A first threshold value superjudgment step for determining whether the database utilization rate obtained by the utilization rate obtaining unit is greater than a first threshold value and is greater than a second threshold value. Tsu includes up, if it is determined that the first threshold value superstate in the first threshold super determining step, a number band moving step of moving the phone number of the predetermined number band to another database, the.

  According to the present invention, it is possible to provide a telephone number management system and a telephone number management method capable of making the processing load on the apparatus more uniform and dynamically performing the uniform processing.

It is a figure which shows the structure of the telephone number management system which concerns on 1st Embodiment of this invention. It is an example which memorize | stores the storage information and storage location information of a database by a number allocation part. (A) is a number band usage rate, (b) is a database usage rate, and (c) is an example of storing storage location information of telephone numbers in a number band. The example of the table which memorize | stores the telephone number allocation condition in a number allocation part is shown. It is a table which shows the storing place of the subscriber information of the said number zone | band before and after replacement of subscriber information. (A) shows the storage location before the subscriber information of the number band is replaced, and (b) shows the storage destination after the subscriber information of the number band is replaced. It is a figure which shows the hardware constitutions of the telephone number management system shown in FIG. It is a flowchart which shows the process of the telephone number management system shown in FIG. It is a table for demonstrating the case where the opening of the database utilization factor of each database becomes large when the telephone number of the allocation number band and the minimum number band is exchanged. It is a figure which shows the structure of the telephone number management system which concerns on 2nd Embodiment of this invention. It is a table which shows the storage condition of the subscriber information of the said number zone | band before and after replacement | exchange (movement) of subscriber information. (A) shows the storage status before the subscriber information of the number band is replaced, (b) after the subscriber information of the number band is moved, and (c) the subscriber information of the number band is replaced. It is a table for demonstrating the procedure in which a number zone moving part acquires the information of a uniform number zone. It is a flowchart which shows the process of the telephone number management system shown in FIG.

  Hereinafter, preferred embodiments of a telephone number management system and a telephone number management method according to the present invention will be described in detail with reference to the drawings. In the description of the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted.

  FIG. 1 is a diagram showing a configuration of a telephone number management system according to an embodiment of the present invention. The telephone number management system 10 is used by a telecommunications carrier, accesses the subscriber database 20, and manages the storage status of telephone numbers assigned to mobile phones. The mobile phone performs communication using this telephone number. In addition, the telephone number management system 10 notifies the subscriber database 20 of the assigned telephone number and the telephone number whose registration has been deleted, as well as instructions for equalizing the processing load on the subscriber database 20. I do.

  An example of the subscriber database 20 is an HLR. In the HLR, subscriber information such as location information of a mobile phone located in a communication area of a mobile communication network managed by a communication carrier is stored. The subscriber information is managed in association with the telephone number of the mobile phone, and is referred to whenever communication is performed on the mobile phone.

  The subscriber database 20 is used by a telecommunications carrier and includes a plurality of distributed databases 21. Each database 21 stores subscriber information necessary for communication processing of a mobile phone for each number band in association with a telephone number assigned to the mobile phone. The subscriber database 20 stores telephone numbers in a plurality of databases 21 and improves processing efficiency by avoiding the processing load on the subscriber database 20 being concentrated in one place during communication processing of mobile phones. Plan. Here, for example, the lower four digits “EFGH” are common among the 11-digit telephone numbers of “090-ABCD-EFGH (“ ABCD ”and“ EFGH ”are arbitrary 0000-9999)”. Refers to a collection of phone numbers. However, a 4-digit number band of “ABCD” assigned to each communication carrier is determined in advance, and the number of number bands varies depending on the communication carrier. In this specification, the number band “090-ABCD-0000” in which the last four digits of the telephone number are “0000” is described as the number band “0000”.

  Each database 21 has a function of moving a telephone number in a stored number band to another database 21. In FIG. 1, three databases 21a, 21b, and 21c are shown, but the number of databases 21 is not limited to this.

  The storage information indicating the storage status of the telephone number in each database 21 is calculated by the number assignment unit 12 of the telephone number management system 10 described later and stored in the number assignment unit 12. The stored information includes the number band usage rate of each number band and the database usage rate of each database 21 in addition to the number band information stored in each database 21.

  The number band utilization rate here refers to the rate of telephone numbers assigned among telephone numbers in a predetermined number band. For example, out of 10,000 assignable telephone numbers belonging to the number band “0000”, when 5000 telephone numbers are allocated, the number band utilization rate of the number band “0000” is acquired as 50%. . On the other hand, the database usage rate refers to the rate of the telephone number assigned to the subscriber among all the telephone numbers stored in the database 21 that stores the telephone numbers of the predetermined number band. The database usage rate can be obtained by obtaining the total number band usage rate of the number zones stored in the database 21 and dividing the total number zone usage rate by the number of number zones. For example, when three number bands “0000”, “0001”, and “0002” are stored in the database 21 and the number band usage rate of each number band is 40%, 60%, and 30%, the database 21 The database usage rate is acquired as 43.3% obtained by dividing the total of the number zone usage rates by 3.

  Subsequently, details of the functions of the telephone number management system 10 will be described. As shown in FIG. 1, the telephone number management system 10 includes a threshold value storage unit 11, a number assignment unit 12, a utilization rate acquisition unit 13, a threshold value excess determination unit 14, a replacement destination selection unit 15, and a number band movement unit 16.

  The threshold storage unit 11 is a threshold storage unit that stores a first threshold and a second threshold. The first threshold is a number band usage rate threshold, and the second threshold is a database usage rate threshold. The first threshold value and the second threshold value are determined in advance by the telephone number management system 10, and each threshold value may be determined one by one, or a plurality of threshold values may be stored in the telephone number storage state. Different threshold values may be set accordingly.

  The number assigning unit 12 is means for assigning a telephone number that has not yet been assigned to the mobile phone. The number assigning unit 12 stores storage information such as the calculated database usage rate of each database 21 and storage destination information indicating the storage destination of the telephone number of each number band. FIG. 2 shows an example in which the number assigning unit 12 stores the storage information of the database 21 and the storage destination information of the telephone numbers in the number band. FIG. 2A shows an example of storing the number band usage rate, FIG. 2B shows the database usage rate, and FIG. As shown in FIG. 2, the number band usage rate is stored in association with the number band, and the database usage rate is stored in association with the database name of the database 21. In addition, the database name storing the number band is stored as the storage destination of the telephone number of the number band.

  In addition, the number assignment unit 12 stores assignment information indicating the assignment state of each phone number to the mobile phone. FIG. 3 shows an example table for storing the telephone number of the mobile phone and its allocation information in association with each other. As shown in FIG. 3, the number assigning unit 12 stores the telephone number of the mobile phone and either “assigned” or “unassigned” indicating the telephone number assignment state in association with each other. In the table of FIG. 3, telephone numbers “090-0000-0000” and “090-0000-0002” represent assigned telephone numbers, and “090-0000-0001” is a telephone number that has not yet been assigned. Represents. The number assigning unit 12 refers to this table and pays out the telephone number of the candidate for assignment. The telephone number is assigned by registering, in the telephone number management system 10, a telephone number to be assigned from a dedicated terminal by a contractor of the cellular phone of the communication carrier every time a mobile telephone is newly contracted. When the telephone number is assigned, the number assigning unit 12 updates the stored assignment information and outputs the assigned telephone number information to the utilization rate obtaining unit 13. As a telephone number assignment method, the contract person in charge may present a plurality of telephone numbers to the user, and then the telephone number desired by the user may be assigned from among them. In that case, the allocation information of the allocated telephone number is updated, and only the information of the telephone number is output to the utilization rate acquisition unit 13. The remaining telephone numbers that have not been assigned are stored in the number assignment unit 12 with the candidate telephone numbers being assigned.

  The utilization rate acquisition unit 13 includes a number band utilization rate that is a rate of a telephone number being used among the telephone numbers of the number band (allocation number band) to which the telephone number assigned by the number assignment unit 12 belongs, and the predetermined number It is a utilization rate acquisition means for acquiring a database utilization rate which is a rate allocated to the subscriber among all the telephone numbers stored in the database 21 (allocation database) that stores the telephone numbers of the number band. When the information of the telephone number assigned from the number assigning unit 12 is input, the utilization rate acquiring unit 13 stores the number band utilization rate and the assigned number band of the number band (allocation number band) to which the telephone number belongs. The database usage rate 21 (allocation database) is acquired from the number allocation unit 12. Specifically, the utilization rate acquisition unit 13 refers to the number band utilization rate shown in FIG. 2A stored in the number assignment unit 12 based on the portion (lower 4 digits) indicating the number band of the assigned telephone number. To obtain the number band usage rate of the assigned number band. Similarly, on the basis of the part (the last 4 digits), the allocation database storing the telephone numbers in the allocation number band is identified with reference to the information shown in FIG. The data usage rate of the allocation database is acquired with reference to the database usage rate shown in FIG. The usage rate acquisition unit 13 outputs the acquired number band usage rate and database usage rate to the threshold value super determination unit 14.

  The threshold value super-determination unit 14 has a database usage rate acquired by the usage rate acquisition unit 13 in which the number band usage rate acquired by the usage rate acquisition unit 13 is larger than the first threshold value read from the threshold storage unit 11. Is a first threshold value determination unit that determines whether the threshold value is greater than the second threshold value read from the threshold value storage unit 11. When the number band usage rate and the database usage rate are input from the usage rate acquisition unit 13, the threshold value super determination unit 14 reads the first threshold value and the second threshold value from the threshold storage unit 11, and The threshold value of 1 and the database usage rate are compared with the second threshold value. When the number band usage rate is larger than the first threshold and the database usage rate is larger than the second threshold, it is determined that the assigned number band is in a state exceeding the first threshold. When it is determined that the assigned number band is in the first threshold exceeded state, the threshold value super determination unit 14 replaces the telephone number of the assigned number band with the telephone number of the number band stored in another database 21. In order to execute, the determination result is output to the replacement destination selection unit 15 together with the information of the assigned number band. On the other hand, if the threshold value excess determination unit 14 does not determine that the assigned number band is in the first threshold value exceeded state, the threshold value excess determination unit 14 does not replace the telephone number of the number band and does not perform replacement of the phone number in the original database 21 (assignment database). The telephone number of the number band (assigned number band) is managed.

  The replacement destination selection unit 15 acquires the comparison database usage rate of the comparison database that is the database 21 other than the database 21 that stores the telephone numbers of the assigned number zone, and the comparison number zone usage rate of the number zone stored in the comparison database. And replacement destination selection means for selecting a replacement destination number zone based on the comparison database usage rate and the comparison number zone usage rate. Here, the comparison database usage rate refers to the database usage rate obtained for each of the comparison databases other than storing the assigned number zone, and the comparison number zone usage rate refers to the number zone stored in each comparison database. Refers to the number band usage rate. The comparison database usage rate and the comparison number zone usage rate are stored in the number assigning unit 12 in association with the database name and the number zone, similarly to the number zone usage rate of the allocation number zone and the database usage rate of the allocation database. Has been.

  When the determination result that the assigned number band is in the first threshold value exceeding state is input from the threshold value excess determining unit 14, the replacement destination selecting unit 15 stores a comparison database other than the database that stores the telephone numbers in the assigned number band. The comparison database usage rate and the comparison number zone usage rate of the number zone stored in the comparison database are acquired from the number assignment unit 12. Specifically, referring to a table in which the database usage rate is stored in association with the database name as shown in FIG. 2B, the database usage rate of the comparison database other than the allocation database (comparison database usage rate) To get. Then, a comparison database having a comparison database usage rate smaller than the database usage rate acquired by the usage rate acquisition unit 13 is extracted. If there is no comparison database whose comparison database usage rate is smaller than the database usage rate acquired by the usage rate acquisition unit 13, the original database 21 is not moved to another database 21 without moving the telephone number of the assigned number band. (Allocation database) manages the telephone number of the number band (allocation number band). Next, of the extracted comparison databases, the comparison database with the lowest comparison database usage rate is selected, and the number zone with the lowest comparison number zone usage rate among the number bands stored in the selected comparison database is replaced. Select as number band. For selection of the replacement destination number band, for example, referring to a table as shown in FIG. 2A, information on a portion (lower four digits) indicating the number band of the number band with the smallest number band utilization rate is acquired. Is done. Also, information on the replacement destination database that stores the replacement destination number band is acquired as a storage destination database name associated with the last four digits of the replacement destination number band with reference to the table shown in FIG. . The replacement destination selection unit 15 outputs, to the number band moving unit 16, the replacement destination number band acquired in this way and the information of the replacement destination database that stores the number band together with the information of the allocation number band and the allocation database.

  Here, an example of the method of selecting the replacement destination number band will be described using the numerical values of the database utilization rate shown in FIG. For example, when the database usage rate acquired by the usage rate acquisition unit 13 is 50%, first, the database B and the database C having a database usage rate smaller than 50% are extracted. Next, the database C with the lowest database utilization rate is selected from the extracted databases B and C. Then, of the number bands stored in the database C, the number band having the smallest number band utilization rate is selected as the replacement destination number band. The replacement destination selection unit 15 outputs information on the number band selected as the replacement destination number band to the number band moving unit 16. For example, when the number band utilization rate of the number band “0011” stored in the database C is minimum, the information of the number band “0011” is output to the number band moving unit 16.

  The number band moving unit 16 is a number band moving unit that replaces the telephone number of the assigned number band and the telephone number of the number band selected as the replacement destination number band by the replacement destination selection unit 15. The replacement of the telephone number of the number band means that the subscriber information when the mobile phone assigned to the telephone number of the number band stored in the different database 21 performs the communication process is transferred to the database 21 of each other. .

  The replacement of the telephone number of the number band executed by the number band moving unit 16 is performed by the following procedure, for example. First, when the number band moving unit 16 receives information on the replacement destination number band from the replacement destination selection unit 15, the allocation number band is assigned to the database 21 (replacement source database) that stores the allocation number band that is the replacement source. Is instructed to replace the telephone number of the telephone number and the telephone number of the replacement number band. The replacement instruction includes information on the number band of the replacement source, the database of the replacement destination, and information on the number band. Next, the replacement source database that has received the replacement instruction requests the database 21 (replacement destination database) that stores the replacement destination number band that is the replacement destination to replace the number band, and obtains the subscriber information of the replacement source number band. send. Next, when receiving the subscriber information, the replacement destination database stores the subscriber information in the replacement destination database and sends the subscriber information of the replacement destination number band stored in the replacement destination database to the replacement source database. When the replacement source database receives the subscriber information of the replacement destination number band from the replacement destination database, the replacement source database stores the subscriber information in the replacement destination database and then sends information indicating that the replacement is completed to the number band moving unit 16. In addition to the notification, the information on the storage location of the subscriber information of the number band is updated.

  Here, the number band belonging to the telephone number assigned by the number assigning unit 12 is “0000”, and the number band “0011” is selected as the replacement destination number band by the replacement destination selection unit 15. An example in which information indicating the storage location of subscriber information is updated is shown in FIG. (A) shows the accommodation destination of the database before replacing the telephone number in the number band, and (b) shows the accommodation destination of the database after replacing the telephone number in the number band. In FIG. 4, the storage destination of the telephone number of the assigned number band “0000” is updated from the database A to the database C, and the storage destination of the subscriber information of the number band “0011” is updated from the database C to the database A. It is shown.

  FIG. 5 is a hardware configuration diagram of the telephone number management system 10. As shown in FIG. 5, the telephone number management system 10 is physically a data transmission / reception device such as a CPU 101, a RAM 102 and a ROM 103 which are main storage devices, an auxiliary storage device 104 such as a hard disk and a flash memory, and a network card. The computer system includes the communication module 105 and the like. The functions shown in FIG. 1 operate the communication module 105 under the control of the CPU 101 by loading predetermined computer software on the hardware such as the CPU 101 and the RAM 102 shown in FIG. This is realized by reading and writing data in the storage device 104.

  FIG. 6 is a flowchart showing processing in the telephone number management system 10 of the present embodiment. Hereinafter, the processing executed in the telephone number management system 10 will be described using the flowchart shown in FIG. 6, and the telephone number management method according to the present embodiment will be described.

  In this processing, when the telephone number is assigned to the mobile phone by the number assigning unit 12 (S11), the utilization rate acquiring unit 13 stores the number band utilization rate of the assigned number band and the telephone number of the assigned number band. The database usage rate of the database 21 is acquired (S12, usage rate acquisition step). Next, the threshold value super determination unit 14 determines whether the number band utilization rate is greater than the first threshold value and the database utilization rate is greater than the second threshold value (S13, Threshold determination step).

  When it is determined by the threshold value super-determination unit 14 that the state is the first super-threshold state (S13; YES), the replacement destination selection unit 15 compares the comparison database usage rate of the comparison database with the number bands stored in the comparison database. The number band usage rate is acquired, and it is determined whether there is a comparison database whose comparison database usage rate is smaller than the database usage rate acquired by the usage rate acquisition unit 13 (S14). When the replacement destination selection unit 15 determines that there is the comparison database (S14; YES), the replacement destination selection unit 15 further selects a comparison database having the smallest comparison database utilization rate from the comparison databases (S15). ). Next, among the number bands stored in the selected comparison database, the number band with the smallest number band utilization rate is selected as the replacement destination number band (S15). Then, the number band moving unit 16 instructs the database 21 to switch the telephone number of the assigned number band and the telephone number of the replacement number band (S16, number band moving step).

  If the threshold value excess determination unit 14 does not determine the first threshold value excess state (S13; NO), and the replacement destination selection unit 15 acquires the comparison database utilization rate by the utilization rate acquisition unit 13. If it is not determined that there is a comparison database smaller than the usage rate (S14; NO), the telephone number of the number band is not stored in the original database 21 without moving the telephone number of the number band to another database 21. to manage.

  As described above, according to the present embodiment, the number band usage rate acquired by the usage rate acquisition unit is greater than the first threshold, and the database usage rate acquired by the usage rate acquisition unit is the second. If it is determined that the first threshold value is greater than the first threshold value, the telephone number in the assigned number band is moved to another database 21.

  In this case, the number band moving unit 16 moves the telephone numbers in the number band because the telephone numbers in the assigned number band are frequently used and all the telephones stored in the database 21 storing the assigned number band are used. Only when there are many numbers assigned to subscribers. Therefore, the database usage rate of the database 21 storing the assigned number band can be lowered as the telephone number of the assigned number band moves. Accordingly, since the database utilization rate is not biased among the databases 21, the processing load on the subscriber database 20 becomes more uniform, and the equalization processing can be performed dynamically.

  In particular, in this embodiment, at least one of the comparison database usage rate of a comparison database other than the database that stores the telephone numbers of the assigned number zone and the comparison number zone usage rate of the number zone stored in the comparison database is acquired. And a replacement destination selection means for selecting a replacement destination number band based on at least one of the comparison database usage rate and the comparison number band usage rate, and the number band moving means includes the telephone number of the predetermined number band and the replacement destination The telephone number of the replacement destination number band selected by the selection means is replaced. In this case, the number band utilization rate of the replacement destination number band can reliably suppress the database utilization rate, and the processing load on the subscriber database 20 can be made uniform efficiently.

  In particular, in the present embodiment, the replacement destination selection unit 15 uses any of the number bands stored in the comparison database in which the comparison database usage rate is smaller than the database usage rate of the database storing the telephone numbers of the assigned number band. Select the replacement number zone from the list. In this case, since the processing load of the database 21 storing the assigned number band is distributed to the database 21 having a smaller processing load, the database usage rate can be effectively suppressed, and the processing load of the database 20 can be made more uniform. It can be done efficiently.

  In particular, in the present embodiment, the replacement destination selection unit selects a replacement destination number band from any number bands stored in the comparison database having the smallest comparison database utilization rate. In this case, since the processing load of the database 21 storing the telephone numbers in the assigned number band is distributed to the minimum database 21, the processing load on the subscriber database 20 can be made more efficient.

  In particular, in the present embodiment, among the number bands stored in any of the comparison databases, the number band having the smallest comparison number band utilization rate is selected as the replacement destination number band. In this case, since the processing load of the database 21 for storing the telephone numbers in the assigned number band is efficiently distributed to the database 21 with the minimum processing load, the processing load on the subscriber database 20 can be made even more efficient.

  In the present embodiment, the assigned number band in the utilization rate acquiring unit 13 is a number band to which the most recently assigned telephone number belongs. In this case, every time a telephone number is assigned to a mobile phone, the processing load on the subscriber database 20 is made uniform, so that the processing load can be made more uniform.

  In the above, it explained in detail based on the embodiment of the present invention. However, the present invention is not limited to the above embodiment. The present invention can be modified in various ways as described below without departing from the scope of the invention.

  In the present embodiment, the replacement destination selection unit 15 selects the database 21 with the lowest database usage rate, and then replaces the number zone with the lowest number zone usage rate among the number zones stored in the selected database. Although selected as the destination number zone, the replacement destination number zone is not limited to this. Alternatively, the telephone numbers in the assigned number band may be moved to another database 21 without replacing the telephone numbers in the assigned number band and the telephone numbers in the number band stored in another database 21. In this case, the uniform processing of the processing load on the subscriber database 20 can be executed only by acquiring only the number band usage rate of the allocation number zone and the database usage rate of the database 21 storing the allocation number zone. For this reason, the telephone number management system 10 can be simplified.

  In the present embodiment, the usage rate acquisition unit 13 acquires the number band usage rate and the database usage rate every time a telephone number is assigned to the mobile phone, but the timing for acquiring these usage rates is not limited to this. . For example, it may be performed every several hours or every day. In this case, it is possible to equalize the processing load of the subscriber database 20 at an appropriate timing depending on the storage state of the telephone number of the telephone number management system 10.

  In the present embodiment, the telephone number management system 10 includes a threshold storage unit 11, a number allocation unit 12, a usage rate acquisition unit 13, a threshold value super-determination unit 14, a replacement destination selection unit 15, and a number band moving unit 16. Although the processing load of the database 20 is equalized, each database 21 itself may constitute the telephone number management system 10 according to the present invention.

(Second Embodiment)
A second embodiment which is a preferred embodiment of the present invention will be described. The telephone number management system 10 according to the second embodiment is different from the telephone number management system 10 according to the first embodiment in the following points. In other words, in the first embodiment, when it is determined that the allocation number band is in the first threshold value excess state, the replacement destination determination unit 15 selects the minimum number band as the replacement number band to be replaced with the allocation number band. The number band moving unit 16 replaces the telephone number, minimum number band, and telephone number of the assigned number band. On the other hand, in the second embodiment, when the telephone number of the assigned number band and the telephone number of the minimum number band are replaced, the replacement is executed so that the database usage rate between the databases does not become uneven from before the replacement. In this case, a means for confirming the database usage rate of the replacement source and the replacement destination is provided.

  Here, a case will be described with reference to FIG. 7 where the database usage rate of a plurality of databases becomes non-uniform when the telephone number of the assigned number band and the telephone number of the minimum number band are replaced. FIG. 7A shows the database usage rate of each of the databases A, B, and C before replacement and the number zone usage rate of each number zone stored in the database. In (a), a number band in which the number band utilization rate of database A is 60% is set as an assigned number band. The minimum number band is a number band with a number utilization rate of 20% stored in the database B having the smallest database utilization rate. In this case, the difference in database utilization between the replacement source (database A) and the replacement destination (database B) is 3.3%. From this state, as shown in (b), a number band (assignment number band) with a database A number band utilization rate of 60% and a number band with a database B number utilization ratio of 20% (minimum number band). Replace. The opening of the database usage rate of the replacement source and the replacement destination after the replacement is 23.3%, and the opening of the database usage rate between the databases is larger than that before the replacement. In this case, even if the telephone number of the assigned number band and the telephone number of the minimum number band are exchanged, the load on the plurality of databases is not uniformed, and it is not possible to achieve uniformization unless the above exchange is repeated.

  For this reason, in the second embodiment, when it is determined that the assigned number band is in the first threshold value super state, the third threshold value super state determination, the fourth threshold value super state determination, and the fifth threshold value super state are further performed. After the determination of the state exceeding the threshold is appropriately performed, the telephone numbers in the assigned number band are moved (replaced), and uniform processing of a plurality of databases is executed. Hereinafter, the telephone number management system 10 according to the second embodiment will be described focusing on differences from the first embodiment.

  Details of functions of the telephone number management system 10 according to the second embodiment will be described with reference to FIG. As shown in FIG. 1, the telephone number management system 10 includes a threshold value storage unit 11, a number assignment unit 12, a utilization rate acquisition unit 13, a threshold value excess determination unit 14, and a number band movement unit 16. In the second embodiment, in addition to the absence of the replacement destination selection unit 15 of the first embodiment, the threshold storage unit 11 has a third threshold, a fourth threshold, and a threshold in addition to the first threshold and the second threshold. That the fifth threshold value is stored, the threshold value super-determination unit 14 is the first threshold value super-determination unit 14a, the third threshold value super-determination unit 14b, the fourth threshold value super-determination unit 14c, and the fifth threshold value super-determination unit It differs from 1st Embodiment that it is comprised including the part 14d.

  The threshold storage unit 11 is a threshold storage unit that stores a first threshold, a second threshold, a third threshold, a fourth threshold, and a fifth threshold. The first threshold value and the second threshold value are the same as those in the first embodiment, and are a number band utilization rate threshold value and a database utilization rate threshold value, respectively. The third threshold value, the fourth threshold value, and the fifth threshold value are threshold values of the following values expressed based on the database usage rate and the minimum database usage rate of the minimum database. That is, the third threshold value is a threshold value obtained by subtracting the minimum database usage rate from the database usage rate, and the fourth threshold value is the minimum database usage rate when the telephone number of the assigned number band is moved to the minimum database. The threshold value for the difference from the database usage rate and the fifth threshold value are used to replace the telephone number of the assigned number band with the telephone number of the minimum number band having the smallest number band utilization rate among the number bands stored in the minimum database. This is the threshold value of the difference between the database usage rate and the minimum database usage rate. These threshold values are determined in advance by the telephone number management system 10, and may be determined one by one, or a plurality of threshold values are stored, and different threshold values are adapted depending on the storage state of the telephone numbers. It may be set to be.

  The usage rate acquisition unit 13 is a usage rate acquisition unit that acquires the number zone usage rate and the database usage rate. The utilization rate acquisition unit 13 of the second embodiment has a function of calculating values used for determination in each threshold value excess determination unit of the threshold value excess determination unit 14 to be described later in the utilization rate acquisition unit 13 of the first embodiment. Is done. These values are calculated by the following procedure based on the database usage rate and the minimum database usage rate of the minimum database. First, the utilization rate acquisition unit 13 assigns the comparison database utilization rate of the comparison database other than the database that stores the telephone numbers of the allocation number band and the comparison number band utilization rate of the number band stored in the comparison database to the number allocation unit. 12 from. And based on the acquired comparison database usage rate, the minimum database with the lowest comparison database usage rate is determined, and based on the comparison number zone usage rate, the number zone usage rate among the number zones stored in the minimum database is Determine the smallest minimum number band.

  Next, the usage rate acquisition unit 13 calculates a value (third value) obtained by subtracting the database usage rate of the minimum database from the database usage rate, for use in the third threshold value excess determination described later. Further, in order to use it for the fourth overthreshold determination, a difference (fourth value) between the database and the minimum database when the telephone number of the assigned number band is moved to the minimum database is calculated. A database in the case of replacing the telephone number of the assigned number band and the telephone number of the minimum number band with the smallest number band utilization rate among the number bands stored in the minimum database for use in the fifth threshold value determination; The minimum database difference (fifth value) is calculated. These calculated values are output to the threshold value excess determination unit 14. The calculation of these values is performed, for example, every time a telephone number is assigned to a mobile phone by the number assigning unit 11 and is appropriately read by each threshold value excess judging unit as will be described later.

  Here, the calculation method of the third value, the fourth value, and the fifth value will be specifically described using the databases A, B, and C in FIG. (A) has shown the database utilization rate and number utilization rate of each database before moving or replacing the telephone number of an allocation number zone. In FIG. 9, when the database A is a database for storing the assigned number band, the databases B and C are comparison databases. The utilization rate acquisition unit 13 determines the database C having the smallest database utilization rate among the databases B and C as the smallest database, and among the number bands stored in the database C, the number utilization rate is the smallest. The number band (number band with a number band utilization rate of 10%) is determined as the minimum number band. In (a), if the number band with a 50% number band utilization rate of database A is the assigned number band, the third value is calculated as a value obtained by subtracting the database utilization rate of the minimum database from the database utilization rate. Therefore, 20.0% is obtained by subtracting 13.3% from 33.3%.

  FIG. 9 (b) shows the database usage rate and the number zone usage rate of each database when the telephone number of the assigned number zone (number zone where the number zone usage rate of database A is 50%) is moved to the minimum database. Show. Since the fourth value is calculated as the difference between the database usage rate and the minimum database usage rate in this case, it is 3.0% of the difference between 25.5% and 22.5%. (C) shows the database usage rate and the number zone usage rate of each database when the telephone number of the assigned number zone and the phone number of the minimum number zone are exchanged. Since the fifth value is calculated as the difference between the database and the minimum database in this case, it is 6.6% of the difference between 26.6% and 20.0%.

  As described above, the threshold value excess determination unit 14 includes the first threshold value determination unit 14a, the third threshold value determination unit 14b, the fourth threshold value determination unit 14c, and the fifth threshold value determination unit 14d. The first threshold value determination unit 14a is a part corresponding to the threshold value excess determination unit 14 of the first embodiment, and determines whether the state is in the first threshold value excess state using the first threshold value and the second threshold value. First threshold value determination means.

  The third threshold determination unit 14b determines whether the third value calculated by the utilization rate acquisition unit 13 is a third threshold excess state that is greater than the third threshold stored in the threshold storage unit 11. 3 is a threshold value super-determination means. The fourth threshold value determination unit 14 c is a fourth threshold value determination unit that determines whether the fourth value is a fourth threshold value excess state that is larger than the fourth threshold value stored in the threshold value storage unit 11. The fifth threshold value determination unit is a fifth threshold value determination unit that determines whether the fifth value is in a fifth threshold value state greater than the fifth threshold value stored in the threshold value storage unit 11.

  When the third value is input from the utilization rate acquisition unit 13, the third threshold determination unit 14b reads the third threshold value from the threshold storage unit 11, and compares the third value with the third threshold value. When the third value is larger than the third threshold value, it is determined that the state exceeds the third threshold value. In FIG. 9A, since the third value is 20.0%, the third threshold determination unit 14b is in the state exceeding the third threshold when the third threshold is less than 20.0%. If the third threshold is 20.0% or more, it is determined that the state is not the third threshold excess state. When it is determined that the third threshold value excess determination unit 14b is in the third threshold value excess state, the determination result is output to the fourth threshold value determination unit 14c. On the other hand, when the third threshold value determination unit 14b determines that the third threshold value is not exceeded, the telephone number of the assigned number band is not moved to the minimum database 21a, but the number is stored in the original database 21 (assigned database). Manages the telephone number of the band (assigned number band).

  When the determination result that the third threshold determination unit 14b is in the third threshold excess state is input from the third threshold determination unit 14b, the fourth threshold determination unit 14c receives the fourth value from the usage rate acquisition unit 13 and the threshold storage unit. The fourth threshold value is read from 11 and the fourth value is compared with the fourth threshold value. When the fourth value is larger than the fourth threshold, it is determined that the fourth threshold is exceeded, and when it is smaller than the fourth threshold, it is determined that the fourth threshold is not exceeded. In FIG. 9B, since the fourth value is 3.0%, the fourth threshold determination unit 14c is in a state exceeding the third threshold when the fourth threshold is less than 3.0%. When the fourth threshold is 3.0% or more, it is determined that the state is not the fourth threshold excess state. When the fourth threshold determination unit 14b determines that the fourth threshold value is exceeded, the fourth threshold value determination unit 14b outputs a determination result indicating that the fourth threshold value exceeds the state to the fifth threshold value determination unit 14d. On the other hand, if it is determined that the fourth threshold value excess determination unit 14c is not in the fourth threshold value excess state, the telephone number of the assigned number band is moved to the minimum database. The data is output to the number band moving unit 16.

  When the determination result that the fourth threshold value exceeds the fourth threshold value is input from the fourth threshold value determination unit 14c, the fifth threshold value determination unit 14d receives the fifth value from the utilization rate acquisition unit 13 and the threshold value storage unit. The fifth threshold value is read from 11 and the fifth value is compared with the fifth threshold value. If the fifth value is larger than the fifth threshold, it is determined that the fifth threshold is exceeded, and if it is smaller than the fifth threshold, it is determined that the fifth threshold is not exceeded. In FIG. 9C, since the fifth value is 6.6%, the fifth threshold determination unit 14d is in a state exceeding the fifth threshold when the fourth threshold is less than 6.6%. When the fifth threshold is 6.6% or more, it is determined that the fifth threshold is not exceeded. If the fifth threshold determination unit 14d determines that the fifth threshold value is exceeded, the fifth threshold value determination unit 14d outputs the determination result that the fifth threshold value is exceeded to the number band moving unit 16 without performing the above replacement. To do. On the other hand, if the fifth threshold value excess determination unit 14d determines that the state is not the fifth threshold value excess state, the telephone number of the assigned number band and the number band utilization rate among the number bands stored in the minimum database 21a are the smallest. In order to replace the telephone number of the minimum number band, the determination result that the fifth threshold value is not exceeded is output to the number band moving unit 16.

  The number band moving unit 16 is a number band moving unit that moves the telephone number of the assigned number band to the database 21 different from the assigned number band based on each determination result in the threshold value excess determining unit 14. In order to move the telephone number of the assigned number band, in addition to moving the subscriber information when the mobile phone assigned to the telephone number of the assigned number band performs communication processing to the different database 21, the subscriber information, This includes transferring subscriber information of number bands stored in different databases 21 to each other's database 21.

  The number band moving unit 16 moves the telephone number of the assigned number band to the minimum database when the determination result indicating that the state is not the fourth threshold exceeding state is input from the fourth threshold exceeding determining unit 14c. The storage status of the number band of each database when the telephone number of the allocated number band (number band where the number band utilization rate is 50%) is moved to the minimum database (database C) is shown in FIGS. To change. In addition, when the determination result that the fifth threshold determination unit 14d does not exceed the fifth threshold value is input, the number band moving unit 16 receives the telephone number of the allocated number band and the minimum number stored in the minimum database. Swap the phone number of the band. In this case, the storage status of the number band of each database changes as shown in FIGS.

  On the other hand, when the determination result that the fifth threshold determination unit 14d is in the state exceeding the fifth threshold is input from the fifth threshold determination unit 14d, the number band moving unit 16 stores the minimum number database in the minimum database. When the telephone number of one of the stored number bands and the telephone number of the assigned number band are exchanged, information on the uniform number band where the database usage rate of multiple databases is most uniform is acquired, and the assigned number Swap the phone number of the band and the phone number of the uniform number band.

  Here, a method for the number band moving unit 16 to acquire the information of the uniform number band will be specifically described with reference to FIG. 10 is a number band in which the number band utilization rate stored in the database A is 50%. (A) shows the database usage rate and number zone usage rate before moving the assigned number zone to another database (the state at the time of registration). (B), (c) and (d) show the storage state of the database when the telephone number of this assigned number band is replaced with the respective number band stored in the database C which is the minimum database. (B) shows a case where the telephone number of the assigned number band is replaced with the telephone number of the number band where the number band utilization rate is 10%. When the telephone number of the 20% number band is replaced, (d) shows the database usage rate when the telephone number of the allocated number band and the telephone number of the number band having a number band usage rate of 10% are replaced. Show.

  10A to 10D, the database utilization rates of the databases A, B, and C are equal in the storage state of (c), so that the database utilization rate is most uniform in the storage state of (c). It is judged. In order to determine whether the database usage rate is uniform when the database usage rate of each database is different, for example, the difference between the maximum value and the minimum value of the database usage rate in a plurality of databases is obtained, and the difference is minimized. To obtain the average of the database usage rate in multiple databases, and to obtain the most uniform state where the difference between each database usage rate and the average value is the smallest The method which is supposed to be done is mentioned. The number band moving unit 16 that has obtained information on the uniform number band by the method described above replaces the telephone number in the assigned number band and the telephone number in the uniform number band. In addition, the (moving) replacement (from the replacement instruction to the update of the subscriber information) of the telephone numbers of these number bands executed by the number band moving unit 16 is executed through the same procedure as in the first embodiment. .

  FIG. 11 is a flowchart showing processing in the telephone number management system 10 of the second embodiment. Hereinafter, the processing executed in the telephone number management system 10 will be described using the flowchart shown in FIG. 11, and the telephone number management method according to the second embodiment will be described.

  In this processing, when the telephone number is assigned to the mobile phone by the number assigning unit 12 (S21), the utilization rate acquiring unit 13 stores the number band utilization rate of the assigned number band and the telephone number of the assigned number band. The database utilization rate of the database 21 is acquired, the comparison database utilization rate of the comparison database other than the database 21 and the comparison number band utilization rate are acquired, and the minimum database and the minimum number band of the minimum database are determined based on these. Above, a 3rd value, a 4th value, and a 5th value are calculated (S22, utilization rate acquisition step). Next, it is determined by the first threshold value excess determination unit 14a whether the number band utilization rate is greater than the first threshold value and the database utilization rate is greater than the first threshold value. S23, first threshold value determination step).

  When it is determined that the first threshold value excess determination unit 14a is in the first threshold value excess state (S23; YES), the third threshold value determination unit 14b obtains the third value from the utilization rate acquisition unit 12, and the threshold value storage unit 11 Each of the third threshold values is read out, the third value is compared with the third threshold value, and it is determined whether or not the third threshold value is greater than the third threshold value (S24, 3rd threshold value excess determination step). When the third threshold value excess determination unit 14b determines that the state is the third threshold value excess state (S24; YES), the fourth threshold value determination unit 14c determines the fourth value from the utilization rate acquisition unit 13 as the threshold value. Each of the fourth threshold values is read from the storage unit 11, and the fourth value is compared with the fourth threshold value to determine whether the fourth value is in a state exceeding the fourth threshold value, which is larger than the fourth threshold value. (S25, fourth threshold value determination step).

  When the fourth threshold value excess determination unit 14c determines that the state is the fourth threshold value excess state (S25; YES), the fifth threshold value determination unit 14d reads the fifth threshold value from the threshold value storage unit 11, and outputs the fifth value. Are compared with the fifth threshold value to determine whether the fifth value is in a fifth threshold value excess state where the fifth value is greater than the fifth threshold value (S26, fifth threshold value excess determination step). When the fifth threshold value excess determination unit 14d determines that the state is the fifth threshold value excess state (S26; YES), the number band moving unit 16 acquires information on the uniform number band stored in the minimum database, and assigns the assigned number. The telephone number of the band and the telephone number of the uniform number band are switched (S27).

  In addition, when it is determined that the first threshold value excess determination unit 14a is not in the first threshold value excess state (S23; NO), and the third threshold value excess determination unit 14c is determined not to be in the third threshold value excess state. In the case (S24; NO), the number band moving unit 16 manages the telephone number of the number band in the original database 21 without moving the telephone number of the assigned number band to another database 21.

  On the other hand, if it is determined by the fourth threshold value excess determining unit 14c that the state is not the fourth threshold value exceeding state (S25; NO), the number band moving unit 16 moves the telephone number of the assigned number band to the minimum database (S28). ), When it is determined that the fifth threshold value excess determination unit 14d is not in the fifth threshold value excess state (S26; NO), the number band movement unit 16 determines the telephone number of the assigned number band and the telephone number of the minimum number band. Are replaced (S29).

  As described above, in the telephone number management system 10 of the present embodiment, the threshold storage unit 11 further stores the third threshold, and the database usage rate and the comparison other than the database that stores the telephone numbers in the assigned number band are compared. The comparison database usage rate of the database is acquired, and it is determined whether the value obtained by subtracting the database usage rate of the minimum database having the minimum comparison database usage rate from the database usage rate exceeds a third threshold value that is greater than the third threshold value. 3, the number band moving unit 16 stores the telephone number of the assigned number band in the minimum database when the third threshold value super state determination unit 14 b determines that the state is the third threshold value super state. Move to. In this case, for example, as shown in FIG. 7, after the telephone number of the assigned number band is moved to the minimum database (database C), the opening of the database utilization rate of both databases becomes large (3.3% → 23. 3%) can be avoided, and the processing load can be made uniform evenly and efficiently.

  Further, in the telephone number management system 10 in the present embodiment, the threshold storage unit 11 further stores a fourth threshold, and the database and the minimum database when the telephone number in the assigned number band is moved to the minimum database are stored. A number threshold shift unit 16c, which further includes a fourth threshold value super state determination unit 14c that obtains one database utilization rate and determines whether the difference between the two database utilization rates is greater than a fourth threshold value. If it is determined by the fourth threshold value excess state determination unit 14c that the state is not the fourth threshold value excess state, the telephone number of the assigned number band is moved to the minimum database. In this case, it is possible to avoid an increase in the database utilization rate of both databases after the telephone numbers in the assigned number band are moved to the minimum database, and to ensure uniform processing load efficiently.

  In the telephone number management system 10 of the present invention, the threshold storage unit 11 further stores a fifth threshold, and the telephone number of the assigned number band and the number stored in the minimum database having the smallest comparison database usage rate. Two database usage rates of the database and the minimum database when the phone number of the minimum number zone with the lowest number zone usage rate is replaced are obtained, and the difference between the two database usage rates is greater than the fifth threshold A fifth threshold super-state determining unit 14d that determines whether the fifth threshold super-state is present is further included, and the number band moving unit 16 is determined not to be in the fifth threshold super-state by the fifth threshold super-state determining unit 14d. In this case, the telephone number in the assigned number band is replaced with the telephone number in the minimum number band. In this case, when the telephone number of the assigned number band and the telephone number of the minimum number band are exchanged, the processing load can be surely made uniform and efficient.

  The number band moving unit 16 replaces the telephone numbers of the number band stored in the minimum database with the telephone numbers of the assigned number band among all the number bands stored in the minimum database. The information of the uniform number band where the database utilization rate is most uniform is acquired, and the telephone number of the assigned number band and the telephone number of the uniform number band are exchanged. In this case, when the telephone number of the assigned number band is replaced with the telephone number of the number band stored in the minimum database, the processing load can be made more efficient.

  In the above, it explained in detail based on the embodiment of the present invention. However, the present invention is not limited to the above embodiment. The present invention can be modified in various ways as described below without departing from the scope of the invention.

  In the present embodiment, after it is determined that the first threshold value is exceeded, it is subsequently determined whether the third threshold value is exceeded, and further the fourth threshold value is determined and the fifth threshold value is determined. The uniform processing method for a plurality of databases has been determined based on the determination results, but the flow for determining the uniform processing method is not limited to this. For example, after it is determined that the state exceeds the first threshold value, the fourth threshold value may be determined without performing the third threshold value determination, or the third threshold value determination and the fourth threshold value may be performed. The fifth threshold super-determination may be performed without performing super-determination. In addition, after it is determined that the state exceeds the first threshold value, the number band moving unit 16 may suddenly replace the telephone number in the assigned number band and the telephone number in the uniform number band. That is, S27 may be performed independently. In this case, the flow of uniform processing load on the subscriber database 20 can be simplified.

  In addition, after it is determined that the state exceeds the first threshold value, only the third threshold value determination may be taken alone to perform the uniform processing. In this case, when it is determined that the third threshold value is not exceeded, the telephone number of the assigned number band is initially moved to the database 21a without moving the telephone number of the assigned number band to another database 21a as in the present embodiment. to manage. On the other hand, if it is determined that the state exceeds the third threshold value, the replacement destination selection unit 15 of the first embodiment stores, for example, the comparison database usage rate and the comparison database without performing each subsequent threshold value determination. It is possible to select a replacement destination number band based on at least one of the comparison number band utilization rates of the number bands that have been assigned, and to exchange the telephone number of the assigned number band and the telephone number of the replacement destination number band. Similarly, after it is determined that the state exceeds the first threshold value, only the fourth threshold value determination may be taken alone to perform uniform processing. In this case, if it is determined that the fourth threshold value is not exceeded, the telephone number of the assigned number band is moved to the minimum database as in the present embodiment.

  In the present embodiment, when the fifth threshold value excess determination unit 14d determines that the fifth threshold value state is not exceeded, the telephone number of the assigned number band and the telephone number of the minimum number band stored in the minimum database are However, the number band to be replaced with the assigned number band is not limited to the minimum number band, and if the number band usage rate is smaller than the assigned number band, the telephone number of any number band stored in the minimum database You can replace it.

DESCRIPTION OF SYMBOLS 10 ... Telephone number management system, 11 ... Threshold storage part, 12 ... Number allocation part, 13 ... Utilization rate acquisition part, 14 ... Overthreshold determination part, 15 ... Replacement destination selection part, 16 ... Number zone movement part, 20 ... Subscription Database, 21 database.

Claims (11)

A telephone number management system that manages the storage state of telephone numbers in a plurality of databases that store telephone numbers for each number band,
Threshold storage means for storing the first threshold and the second threshold;
Number band usage rate, which is the rate of telephone numbers assigned to subscribers among telephone numbers in a predetermined number band, and all telephone numbers stored in the database storing the telephone numbers in the predetermined number band A utilization rate obtaining means for obtaining a database utilization rate that is a rate of a telephone number assigned to a subscriber,
A first threshold value superstate in which the number band utilization rate acquired by the utilization rate acquisition unit is greater than a first threshold value and the database utilization rate acquired by the utilization rate acquisition unit is greater than a second threshold value First threshold value super-determination means for determining whether or not
Number band moving means for moving the telephone number of the predetermined number band to another database when the first threshold value exceeding determination means determines that the first threshold value exceeding state;
Phone number management system comprising. Obtaining at least one of a comparison database usage rate of a comparison database other than the database storing the telephone numbers of the predetermined number zone and a comparison number zone usage rate of a number zone stored in the comparison database; A replacement destination selection means for selecting a replacement destination number zone based on at least one of the usage rate and the comparison number zone usage rate;
2. The telephone number management system according to claim 1, wherein the number band moving unit replaces a telephone number of the predetermined number band with a telephone number of a replacement destination number band selected by the replacement destination selection unit.   The replacement destination selection means includes a replacement destination number selected from any number band stored in a comparison database in which the comparison database usage rate is smaller than the database usage rate of the database storing the telephone numbers of the predetermined number band. The telephone number management system according to claim 2, wherein a band is selected.   4. The telephone number management according to claim 2, wherein the replacement destination selection unit selects a replacement destination number band from any number band stored in a minimum database having a minimum comparison database usage rate. 5. system.   The replacement destination selection means selects a number band having the lowest comparison number band utilization rate as a replacement destination number band from among the number bands stored in any of the comparison databases. The telephone number management system described in the section. The threshold storage means further stores a third threshold,
The database utilization rate of the minimum database that obtains the comparison database utilization rate of the comparison database other than the database that stores the database utilization rate and the telephone number of the predetermined number band, and the comparison database utilization rate is the smallest from the database utilization rate Further comprising a third threshold value superstate determination means for determining whether the value obtained by subtracting the third threshold value is greater than the third threshold value.
The number band moving means moves the telephone number of the predetermined number band to the minimum database when the third threshold value super state determination means determines that the third threshold value super state is in the third threshold value super state. Phone number management system. The threshold storage means further stores a fourth threshold,
When the telephone number of the predetermined number band is moved to the minimum database, two database usage rates of the database and the minimum database are acquired, and a difference between the two database usage rates is larger than a fourth threshold value A fourth threshold value super state determination unit for determining whether the state is the fourth threshold value super state;
The number band moving means moves the telephone number of the predetermined number band to the minimum database when it is determined by the fourth threshold value super state determining means that it is not the fourth threshold value super state. Or the telephone number management system of 6. The threshold storage means further stores a fifth threshold,
The database in the case where the telephone number of the predetermined number band is replaced with the telephone number of the minimum number band having the smallest number band utilization ratio among the number bands stored in the minimum database having the smallest comparison database utilization ratio And a fifth threshold superstate determination means for determining whether the difference between the two database utilization rates is a fifth threshold superstate that is greater than a fifth threshold. ,
The number band moving means replaces the telephone number of the predetermined number band and the telephone number of the minimum number band when the fifth threshold value super state determination means determines that the fifth threshold value super state is not exceeded. The telephone number management system according to claim 2.   The number band moving means replaces the telephone number of any number band stored in the minimum database with the telephone number of the predetermined number band among the number bands stored in the minimum database 9. The information of the uniform number band in which the database utilization rate of a plurality of databases is most uniformed is acquired, and the telephone number of the predetermined number band and the telephone number of the uniform number band are switched. The telephone number management system described.   The telephone number management system according to any one of claims 1 to 9, wherein the predetermined number band in the utilization rate acquisition unit is a number band to which a telephone number assigned most recently belongs. A telephone number management method comprising threshold storage means for managing a storage state of telephone numbers in a plurality of databases that store telephone numbers for each number band and storing a first threshold and a second threshold,
Number band usage rate, which is the rate of telephone numbers assigned to subscribers among telephone numbers in a predetermined number band, and all telephone numbers stored in the database storing the telephone numbers in the predetermined number band A utilization rate acquisition step of acquiring a database utilization rate that is a rate of a telephone number assigned to the subscriber,
First threshold superstate in which the number band utilization rate acquired in the utilization rate acquisition step is greater than a first threshold and the database utilization rate acquired by the utilization rate acquisition means is greater than a second threshold. A first super-threshold determination step for determining whether or not
A telephone number management method comprising: a number band moving step of moving a telephone number of the predetermined number band to another database when it is determined that the first threshold value exceeds the first threshold state in the first threshold value excess determination step.

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