JP5466252B2 - Communication control system and communication control method - Google Patents

Description

  The present invention relates to a communication control system including a subscriber database server that holds subscriber master data, and a session control server that controls a session by referring to subscriber data synchronized with the subscriber master data, and the communication control system. The present invention relates to a communication control method used.

  In a general communication service, a session control server controls a subscriber's session with reference to subscriber data including contract information of the service subscriber.

  In this case, as shown in FIG. 7, the session control server 902 connects to the subscriber database server 901, acquires the subscriber data from the subscriber master data held by the subscriber database server, and acquires the acquired subscription. Session based on user data. Here, when the subscriber information of the subscriber is updated, both the subscriber master data of the subscriber database server and the subscriber data of the session control server holding the subscriber information to be updated are updated. Thereby, the consistency of the subscriber master data of the subscriber database server 901 and the session control server 902 can be maintained.

  For example, there is a method for changing each subscriber profile having the same contents stored in each of a plurality of exchanges to the same contents (see, for example, Patent Document 1).

  The session control server 902 creates and holds backup data in preparation for failure of subscriber data. When a failure occurs in the session control server 902, the session control server 902 can recover using past backup data. However, as shown in FIG. 8, the session control server 902 after the recovery only holds the subscriber data when the backup data is created. Accordingly, the session control server 902 provides a service based on subscriber data that does not reflect data updated thereafter, and cannot provide a service based on the latest subscriber data. Therefore, the session control server 902 needs to download the latest subscriber data from the subscriber database server 901.

  The latest subscriber data can be acquired by the method shown in FIG. In the method shown in FIG. 9, the session control server 902 acquires all the latest subscriber data from the subscriber database server 901. The session control server 902 can provide a service based on the latest subscriber data by reflecting all downloaded subscriber data in the subscriber data of the session control server 902.

  The latest subscriber data can also be obtained by the method shown in FIG. In the method shown in FIG. 10, when the subscriber database server 901 updates the subscriber information, the subscriber database server 901 updates the subscriber information of the subscriber master data and holds the update history. The session control server 902 requests the subscriber database server 901 for an update history after the backup creation, and downloads the update history from the subscriber database server 901. The session control server 902 recovers using the past backup data, and then updates the subscriber data of the session control server 902 according to the downloaded update history.

JP 2011-11908 A

  However, any of the above methods has a problem that a burden is placed on the subscriber database server 901 or the session control server 902.

  In the method shown in FIG. 9, the session control server 902 downloads all data from the subscriber database server 901. Therefore, both the subscriber database server 901 and the session control server 902 are burdensome. Further, since it takes time for the session control server 902 to acquire the subscriber data from the subscriber database server 901 and reflect it in its own subscriber data, there is a problem that the service interruption time of the session control server 902 is prolonged. .

  In the method shown in FIG. 10, the subscriber database server 901 holds the update history, and therefore requires a very large storage capacity. In addition, when the subscriber information is updated in the subscriber database server 901, the update history is also updated, so that the load on the subscriber database server 901 is large in the process accompanying the update of the subscriber information. In addition, since all the update histories are reflected in the session control server 902, the subscriber information is updated a plurality of times for the same subscriber, resulting in unnecessary processing.

  Accordingly, an object of the present invention is to provide a communication control system and a communication control method for easily synchronizing subscriber master data held by a subscriber database server and subscriber data held by a session control server.

  In order to solve the above problems, a first feature of the present invention is a subscriber database server that holds subscriber master data in which a subscriber serial number is associated with subscriber information corresponding to the subscriber serial number; The present invention relates to a communication control system including a session control server that controls a session by referring to subscriber data synchronized with subscriber master data. The subscriber database server according to the first feature of the present invention corresponds to the subscriber information updated after the backup generation and the subscriber serial number of the subscriber information when the backup generation information is input from the session control server. Difference data providing means for transmitting to the session control server the attached subscriber difference data and the subscriber deletion difference data which is a list of subscriber serial numbers from which subscriber information has been deleted after the backup is generated. The session control server restores the subscriber data using the backup data of the subscriber data, and then transmits the backup generation information that generated the backup data to the subscriber database server. Subscriber difference data and subscriber deletion difference data are acquired from the subscriber database server, and the restored subscriber data is updated based on the acquired subscriber difference data, and the subscriber serial number included in the subscriber deletion difference data is updated. Differential data updating means for deleting subscriber information from the updated subscriber data is provided.

  In the first feature of the present invention, the session control server further includes session control means for controlling the session based on the updated subscriber data after the differential data update means updates the restored subscriber data. May be.

  The second feature of the present invention is that a subscriber database server that holds subscriber master data in which a subscriber serial number is associated with subscriber information corresponding to the subscriber serial number, and a subscriber that is synchronized with the subscriber master data. The present invention relates to a communication control system including a session control server that controls a session with reference to person data. The subscriber database server according to the second feature of the present invention corresponds to the subscriber information updated after the backup is generated and the subscriber serial number of the subscriber information when the backup generation information is input from the session control server. Difference data providing means for transmitting the attached subscriber difference data and the subscriber sequence number data which is a list of subscriber sequence numbers of the subscriber master data when the backup generation time information is input to the session control server. . The session control server restores the subscriber data using the backup data of the subscriber data, and then transmits the backup generation information that generated the backup data to the subscriber database server. Subscriber differential data and subscriber serial number data are acquired from the subscriber database server, subscriber data after restoration is updated based on the acquired subscriber differential data, and subscriber serial numbers not included in the subscriber serial number data A difference data updating means for deleting the subscriber information from the updated subscriber data.

  In the second aspect of the present invention, the session control server further includes session control means for controlling the session based on the updated subscriber data after the differential data update means updates the restored subscriber data. May be.

  A third feature of the present invention is that a subscriber database server that holds subscriber master data in which a subscriber serial number is associated with subscriber information corresponding to the subscriber serial number, and a subscriber that is synchronized with the subscriber master data. The present invention relates to a communication control method used in a communication control system including a session control server that controls a session with reference to person data. That is, in the communication control method according to the third aspect of the present invention, the session control server restores the subscriber data using the backup data of the subscriber data and then generates the backup data. A step of transmitting the creation time information to the subscriber database server, and when the subscriber database server receives the backup creation time information from the session control server, the subscriber information updated after the backup creation time and the subscriber information Transmitting subscriber difference data associated with the subscriber serial number and subscriber deletion differential data that is a list of subscriber serial numbers from which subscriber information has been deleted after the backup generation to the session control server; The session control server retrieves subscriber difference data from the subscriber database server. And updating the restored subscriber data based on the acquired subscriber difference data, and the session control server acquires the subscriber deletion difference data from the subscriber database server and is included in the subscriber deletion difference data A step of deleting the subscriber information of the subscriber serial number from the updated subscriber data.

  In the third aspect of the present invention, the session control server may further comprise a step of controlling the session based on the updated subscriber data after the step of updating the restored subscriber data.

  According to a fourth aspect of the present invention, there is provided a subscriber database server that holds subscriber master data in which a subscriber serial number is associated with subscriber information corresponding to the subscriber serial number, and a subscription that is synchronized with the subscriber master data. The present invention relates to a communication control method used in a communication control system including a session control server that controls a session with reference to person data. That is, in the communication control method according to the fourth aspect of the present invention, the session control server recovers the subscriber data by using the backup data of the subscriber data and then generates the backup data. A step of transmitting the creation time information to the subscriber database server, and when the subscriber database server receives the backup creation time information from the session control server, the subscriber information updated after the backup creation time and the subscriber information The subscriber difference data associated with the subscriber serial number and the subscriber serial number data that is a list of the subscriber serial numbers of the subscriber master data when the backup generation information is input are transmitted to the session control server. Step and session control server, subscriber difference from the subscriber database server And updating the restored subscriber data based on the acquired subscriber differential data, and the session control server acquires the subscriber sequence number data from the subscriber database server, and stores the subscriber sequence number data. A step of deleting subscriber information of subscriber serial numbers not included from the updated subscriber data.

  In the fourth aspect of the present invention, the session control server may further comprise a step of controlling the session based on the updated subscriber data after the step of updating the restored subscriber data.

  According to the present invention, it is possible to provide a communication control system and a communication control method for easily synchronizing subscriber master data held by a subscriber database server and subscriber data held by a session control server.

It is a sequence diagram of the communication control method which concerns on the 1st Embodiment of this invention. It is a figure explaining an example of data structure and data of subscriber master data concerning an embodiment of the invention. It is a figure explaining an example of a data structure and data of subscriber deletion data concerning a 1st embodiment of the present invention. It is a figure explaining the hardware constitutions and functional block of the subscriber database server and session control server which concern on the 1st Embodiment of this invention. It is a sequence diagram of the communication control method which concerns on the 2nd Embodiment of this invention. It is a figure explaining the hardware constitutions and functional block of the subscriber database server and session control server which concern on the 2nd Embodiment of this invention. It is a figure explaining the role of a subscriber database server and a session control server in a general communication control system. It is a figure explaining the state restored from the past backup data in the session control server in a general communication control system. It is a figure explaining the process which recovers from the past backup data in a session control server in a general communication control system (the 1). It is a figure explaining the process which recovers from the past backup data in a session control server in a general communication control system (the 2).

  Next, embodiments of the present invention will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

(First embodiment)
The communication control system 1 according to the first embodiment of the present invention includes a subscriber database server 100 and a session control server 200. The subscriber database server 100 holds subscriber master data 111 in which a subscriber serial number is associated with subscriber information corresponding to the subscriber serial number. The session control server 200 controls the session with reference to the subscriber data 212 synchronized with the subscriber master data 111. In the first embodiment of the present invention, a process of changing to the latest subscriber data after the session control server 200 backs up with the backup data 211 of the subscriber data 212 will be described.

  A communication control method according to the first embodiment of the present invention will be described with reference to FIG.

  In step S101, the subscriber database server 100 updates and stores the subscriber master data 111 when the subscriber information is updated. At this time, the subscriber database server 100 changes the subscriber information and updates the subscriber master data 111 in association with the subscriber serial number that has updated the subscriber information and the update date and time. When the subscriber master data 111 is updated, the subscriber data 212 is also updated in the session control server 200.

  The subscriber master data 111 is data shown in FIG. 2, for example. The subscriber master data 111 is data in which the subscriber serial number, the latest subscriber information of the subscriber, and the update date and time when the subscriber information is updated are associated with each other. The subscriber information may include a plurality of items such as contract information. In this case, the update date / time is the latest date / time when any item of the subscriber information is updated. Therefore, the update date and time held by the subscriber database server 100 may be only the latest one for the subscriber serial number.

  When deleting the subscriber information, the subscriber database server 100 deletes the subscriber serial number to be deleted and the subscriber information from the subscriber master data 111, and deletes the subscriber serial number to be deleted and the deletion date and time. Are stored in the subscriber deletion data 112 in association with each other.

  The subscriber deletion data 112 is data shown in FIG. The subscriber deletion data 112 is data in which the deleted subscriber serial number is associated with the date and time of deletion.

  Steps S101 and S102 are executed each time the subscriber information is updated or deleted.

  On the other hand, assume that the session control server 200 recovers the subscriber data 212 from the backup data 211 due to a failure. When the recovery from the backup data is completed in step S103, the session control server 200 transmits a subscriber data acquisition request to the subscriber database server 100 in step S104. This subscriber data acquisition request includes backup generation time information for generating backup data. This backup generation time information is information corresponding to the backup generation time, for example, information on the time when the backup was generated.

  When the subscriber database server 100 receives the subscriber data acquisition request from the session control server 200, the subscriber database server 100 extracts the subscriber data after the backup is generated from the subscriber master data 111 in step S105. The subscriber data extracted here is data in which the subscriber serial number of the subscriber whose subscriber information has been updated after the backup generation is associated with the updated subscriber information. Further, the subscriber database server 100 extracts a list of subscriber serial numbers deleted after the backup is generated from the subscriber deletion data 112 in step S107.

  In step S107, the subscriber database server 100 transmits the subscriber data extracted in step S105 to the session control server 200 as subscriber difference data 213. Further, the subscriber database server 100 transmits the subscriber deletion list extracted in step S106 to the session control server 200 as the subscriber deletion difference data 214.

  When the session control server 200 receives the subscriber difference data 213 and the subscriber deletion difference data 214 from the subscriber database server 100, the session control server 200 changes the subscriber data 212 restored from the backup data to the latest subscriber based on the received data. The data 212 is updated.

  Specifically, the session control server 200 overwrites the subscriber data 212 with the subscriber difference data 213 in step S108. At this time, the subscriber information that has been changed after the backup is generated is overwritten by the subscriber difference data 213, so that it is updated to the latest information. When overwriting in step S108 is completed, in step S109, the session control server 200 starts providing a service based on the subscriber data 212 reflecting the subscriber difference data 213. Further, in step S110, the session control server 200 deletes the subscriber information deleted after the backup generation from the subscriber data 212 based on the subscriber deletion difference data 214.

  With reference to FIG. 4, the subscriber database server 100 and the session control server 200 of the communication control system 1 according to the first embodiment of the present invention will be described.

  The subscriber database server 100 is a general computer including a storage device 110, a processing control device 120, and a communication control device 130. Each function shown in FIG. 4 is implemented by a general computer executing a program for executing predetermined processing.

  The communication control device 130 is an interface for connecting the subscriber database server 100 and the session control server 200.

  The storage device 110 stores subscriber master data 111 shown in FIG. 2 and subscriber deletion data 112 shown in FIG.

  The processing control device 120 includes a database update unit 121 and a difference data providing unit 122.

  The database update unit 121 updates the subscriber master data 111 based on a service order or the like input from the outside. At this time, the database updating unit 121 sets the update date / time in the update date / time field of the subscriber master data 111 when updating the subscriber information. Further, when deleting the subscriber information from the subscriber master data 111, the database update unit 121 updates the subscriber deletion data 112 by associating the deletion target subscriber serial number with the deletion date and time.

  The difference data providing unit 122 provides the session control server 200 with update and deletion data after the backup is generated. When the backup generation time information is input from the session control server 200, the difference data providing unit 122 transmits subscriber difference data to the session control server 200. The subscriber difference data is data in which the subscriber information updated after the backup is generated and the subscriber serial number of the subscriber information are associated with each other. Further, the difference data providing unit 122 transmits the subscriber deletion difference data to the session control server 200. The subscriber deletion difference data is data of a list of subscriber serial numbers from which subscriber information has been deleted after the backup is generated.

  The difference data providing unit 122 generates subscriber difference data when the backup generation time information is input. The difference data providing unit 122 extracts the subscriber serial number associated with the update date after the backup generation from the subscriber master data 111, and associates the extracted subscriber serial number with the subscriber information of the subscriber. Subsequently, subscriber difference data is generated. Further, the differential data providing unit 122 extracts the subscriber serial number associated with the deletion date after the backup generation from the subscriber deletion data 112, and generates subscriber deletion differential data including the extracted subscriber serial number. The difference data providing means 122 transmits the generated subscriber difference data and subscriber deletion difference data to the session control server 200 that has input the backup generation time information.

  The session control server 200 is a general computer including a storage device 210, a processing control device 220, and a communication control device 230. Each function shown in FIG. 4 is implemented by a general computer executing a program for executing predetermined processing.

  The communication control device 230 is an interface for connecting the subscriber database server 100 and the session control server 200.

  The storage device 210 stores backup data 211, subscriber data 212, subscriber difference data 213, and subscriber deletion difference data 214.

  The backup data 211 is backup data generated by the session control server 200 based on the subscriber data 212. The backup data 211 is stored in the storage device 210 in association with the backup generation time information that generated the backup.

  The subscriber data 212 is data synchronized with the subscriber master data 111 of the subscriber database server 100, and is data in which the subscriber serial number is associated with the subscriber information of the subscriber. When the subscriber master data 111 of the subscriber database server 100 is updated, the subscriber data 212 of the session control server 200 is similarly updated.

  The subscriber data 212 may not hold the subscriber information of all the subscribers in the subscriber master data 111. For example, the subscriber data 212 may be data in which some subscriber serial numbers of the subscriber master data 111 are associated with subscriber information corresponding to the subscriber serial numbers. In that case, the subscriber information held in the subscriber data 212 may be synchronized with the subscriber information held in the subscriber master data 111.

  The subscriber difference data 213 and the subscriber deletion difference data 214 are data transmitted from the subscriber database server 100. In the subscriber master data 111 of the subscriber database server 100, the subscriber deletion difference data 214 associates the subscriber serial number associated with the update date after the backup generation and the subscriber information of this subscriber. It is data. The subscriber deletion difference data 214 is data including the subscriber serial number associated with the deletion date after the backup generation in the subscriber deletion data 112 of the subscriber database server 100.

  The processing control apparatus 220 includes a backup recovery unit 221, a difference data update unit 222, and a session control unit 223.

  The backup recovery means 221 is means for recovering the subscriber data 212 based on the backup data 211 when some failure occurs in the session control server 200. The subscriber information up to the time when the backup of the backup data 211 is generated is reflected in the subscriber data 212 by the backup recovery means 221.

  The difference data updating unit 222 reflects the subscriber information updated after the backup is generated in the subscriber master data 111 of the subscriber database server 100 in the subscriber data 212. Thereby, the subscriber master data of the subscriber database server 100 and the subscriber data 212 of the session control server 200 can be synchronized.

  The differential data updating unit 222 restores the subscriber data 212 to the subscriber database server 100 by using the backup data 211 of the subscriber data to restore the subscriber data and then generating the backup generation time information that generated the backup data. Send. Accordingly, the difference data update unit 222 acquires the subscriber difference data 213 and the subscriber deletion difference data 214 from the subscriber database server 100. This backup generation time information is information corresponding to the backup generation time, for example, information on the time when the backup was generated.

  The difference data update unit 222 updates the restored subscriber data based on the subscriber difference data 213. The differential data update means 222 acquires the subscriber serial number and subscriber information of the subscriber differential data 213, and in the subscriber data 212, subscribes the subscriber information corresponding to the subscriber serial number acquired from the subscriber differential data 213. To subscriber information acquired from the subscriber difference data 213.

  Further, the differential data updating unit 222 deletes the subscriber information of the subscriber serial number included in the subscriber deletion differential data 214 from the updated subscriber data. The differential data update unit 222 acquires the subscriber serial number from the subscriber deletion differential data 214 and deletes the acquired subscriber serial number record from the subscriber data 212.

  The session control means 223 controls the session of the subscriber terminal accommodated by the session control server 200 based on the subscriber data 212. Here, the session control server 200 controls the session based on the updated subscriber data 212 after the differential data update unit 222 updates the restored subscriber data based on the subscriber differential data 213. The session control means 223 refers to the subscriber data 212 even after the subscriber difference data 213 is reflected in the subscriber data 212, even before the subscriber deletion difference data 214 is reflected in the subscriber data 212. To control the session. Session control processing by session control means 223 and subscriber information deletion processing based on subscriber deletion difference data 214 may be executed in parallel.

  In the above embodiment, the case where the backup generation time is held as the backup data generation time information has been described, but the present invention is not limited to this. For example, in the subscriber database server 100, an update sequence number is assigned for each update, and subscriber information is stored in the subscriber master data 111 in association with the update sequence number. This update sequence number is incremented for each update and is shared by the subscriber database server 100 and the session control server 200. The session control server 200 generates backup data 211 in association with the update sequence number, recovers the subscriber data 212, and transmits the update sequence number to the subscriber database server 100 as backup generation time information. The subscriber database server 100 generates subscriber difference data and subscriber deletion difference data based on the update after the update sequence number included as the backup generation time information.

  In the communication control system 1 according to the first embodiment of the present invention, the data acquired by the session control server 200 from the subscriber database server 100 is limited to the updated subscriber information and the deleted subscriber serial number. It is done. Thereby, the communication control system 1 which concerns on the 1st Embodiment of this invention can reduce the communication amount between the subscriber database server 100 and the session control server 200. FIG. Furthermore, the communication control system 1 according to the first embodiment of the present invention can reduce the processing amount of the subscriber database server 100 and the session control server 200.

  Further, in the first embodiment of the present invention, the subscriber data 212 is updated based on the subscriber difference data 213, and then the subscriber information deleted from the subscriber master data 111 is deleted. Even if the subscriber difference data 213 is reflected in the subscriber data 212 and the subscriber information to be deleted remains in the subscriber data 212, the session control server 200 can start the session control process. Thereby, the session control server 200 can be recovered earlier.

(Second Embodiment)
The communication control system 2 according to the second embodiment of the present invention includes a subscriber database server 101 and a session control server 201. In the first embodiment of the present invention, the case has been described in which the session control server 200 acquires from the subscriber database server 100 a list of subscriber serial numbers deleted after the backup creation. On the other hand, in the second embodiment of the present invention, a case where the session control server 201 acquires a list of all the latest subscriber serial numbers in the subscriber master data 111 will be described.

  With reference to FIG. 5, a communication control method according to the second embodiment of the present invention will be described.

  First, in step S201, the subscriber database server 101 updates the subscriber master data 111. At this time, the subscriber database server 101 changes the subscriber information and updates the subscriber master data 111 in association with the subscriber serial number that has updated the subscriber information and the update date and time. When the subscriber master data 111 is updated, the subscriber data 212 is also updated in the session control server 201.

  The process of step S201 is executed every time the subscriber information is updated or deleted.

  On the other hand, assume that the session control server 201 recovers the subscriber data 212 from the backup data 211 due to a failure. When the recovery from the backup data is completed in step S202, the session control server 201 transmits a subscriber data acquisition request to the subscriber database server 101 in step S203. This subscriber data acquisition request includes backup generation time information for generating backup data. This backup generation time information is information corresponding to the backup generation time, for example, information on the time when the backup was generated.

  When the subscriber database server 101 receives the subscriber data acquisition request from the session control server 201, the subscriber database server 101 extracts the subscriber data after the backup generation from the subscriber master data 111 in step S204. The subscriber data extracted here is data in which the subscriber serial number of the subscriber whose subscriber information has been updated after the backup generation is associated with the updated subscriber information. Further, the subscriber database server 101 extracts a list of all subscriber serial numbers from the subscriber master data 111 in step S205.

  In step S206, the subscriber database server 101 transmits the subscriber data extracted in step S204 to the session control server 201 as subscriber difference data 213. Further, the subscriber database server 101 transmits the subscriber sequence number list extracted in step S205 to the session control server 201 as the subscriber sequence number data 215.

  When the session control server 201 receives the subscriber differential data 213 and the subscriber serial number data 215 from the subscriber database server 101, the session control server 201 converts the subscriber data restored from the backup data into the latest subscriber data based on the received data. Update.

  Specifically, the session control server 201 overwrites the subscriber data 212 with the subscriber difference data 213 in step S207. At this time, the subscriber information that has been changed after the backup is generated is overwritten by the subscriber difference data 213, so that it is updated to the latest information. When overwriting in step S207 is completed, in step S208, the session control server 201 starts providing a service based on the subscriber data 212 reflecting the subscriber difference data 213. Further, in step S209, the session control server 200 deletes the subscriber information deleted after the backup generation from the subscriber data 212 based on the subscriber serial number data 215.

  With reference to FIG. 6, the subscriber database server 101 and the session control server 201 of the communication control system 2 according to the second embodiment of the present invention will be described.

  The subscriber database server 101 is different in the processing of the database update unit 121 and the difference data providing unit 122. Another difference is that the storage device 110 does not include the subscriber deletion data 112.

  When updating the subscriber master data 111, the database updating unit 121 does not generate the subscriber deletion data 112 even if the subscriber is deleted, and deletes the record of the subscriber information to be deleted from the subscriber master data 111. To do.

  The differential data providing means 122 provides the subscriber differential data and transmits the subscriber serial number data, which is a list of the subscriber serial numbers of the subscriber master data when the backup generation time information is input, to the session control server 201. To do.

  The session control server 201 stores not the subscriber deletion difference data 214 but the subscriber serial number data 215, and the processing of the difference data update unit 222 is different.

  The subscriber serial number data 215 is data of a list of subscriber serial numbers of the subscriber master data when the backup generation time information is input.

  The difference data update unit 222 differs from the first embodiment in a method for deleting subscriber information. In the second embodiment, the differential data updating unit 222 deletes the subscriber information of the subscriber serial number that is not included in the subscriber serial number data 215 from the updated subscriber data 212.

  The session control means 223 refers to the subscriber data 212 even after the subscriber difference data 213 is reflected in the subscriber data 212, even before the subscriber serial number data 215 is reflected in the subscriber data 212. You can control the session. Session control processing by session control means 223 and subscriber information deletion processing based on subscriber serial number data 215 may be executed in parallel.

  In the second embodiment, the backup generation time may be used as the backup data generation time information, or an update serial number may be used.

  In the communication control system 2 according to the second embodiment of the present invention, the data acquired by the session control server 201 from the subscriber database server 101 is limited to the updated subscriber information and the latest subscriber serial number. . Thereby, the communication control system 2 according to the second exemplary embodiment of the present invention can reduce the amount of communication between the subscriber database server 101 and the session control server 201. Furthermore, the communication control system 2 according to the second embodiment of the present invention can reduce the processing amount of the subscriber database server 101 and the session control server 201.

  Further, in the second embodiment of the present invention, after the subscriber data 212 is updated based on the subscriber difference data 213, the subscriber information deleted from the subscriber master data 111 is deleted. Even if the subscriber difference data 213 is reflected in the subscriber data 212 and the subscriber information to be deleted remains in the subscriber data 212, the session control server 201 can start the session control process. Thereby, the session control server 201 can be recovered earlier.

(Other embodiments)
As described above, the first embodiment and the second embodiment of the present invention have been described. However, it should be understood that the description and drawings constituting a part of this disclosure limit the present invention. Absent. From this disclosure, various alternative embodiments, examples, and operational techniques will be apparent to those skilled in the art.

  For example, the subscriber database server described in the embodiment of the present invention may be configured on one piece of hardware as shown in FIG. 4 or FIG. It may be configured on the wear. Moreover, you may implement | achieve on the existing communication control system.

  It goes without saying that the present invention includes various embodiments not described herein. Therefore, the technical scope of the present invention is defined only by the invention specifying matters according to the scope of claims reasonable from the above description.

DESCRIPTION OF SYMBOLS 1 Communication control system 100 Subscriber database server 110,210 Storage apparatus 111 Subscriber master data 112 Subscriber deletion data 120,220 Processing control apparatus 121 Database update means 122 Differential data provision means 130,230 Communication control apparatus 200 Session control server 211 Backup data 212 Subscriber data 213 Subscriber differential data 214 Subscriber deleted differential data 221 Backup recovery means 222 Differential data update means 223 Session control means

Claims (8)

A subscriber database server that holds subscriber master data in which a subscriber serial number is associated with subscriber information corresponding to the subscriber serial number, and a session with reference to subscriber data that is synchronized with the subscriber master data. In a communication control system comprising a session control server to control,
The subscriber database server
When backup generation information is input from the session control server, the subscriber information updated since the backup generation and the subscriber differential data that associates the subscriber serial number of the subscriber information and the subscription after the backup generation. Differential data providing means for transmitting subscriber deletion differential data, which is a list of subscriber serial numbers from which subscriber information has been deleted, to the session control server,
The session control server
After the subscriber data is restored using the backup data of the subscriber data, the backup generation information that generated the backup data is transmitted to the subscriber database server, and the subscriber database server The subscriber difference data and the subscriber deletion difference data are acquired from, and the restored subscriber data is updated based on the acquired subscriber difference data, and the subscriber serial number included in the subscriber deletion difference data is updated. A communication control system comprising: difference data update means for deleting subscriber information from the updated subscriber data. The session control server
The difference data update means further comprises session control means for controlling a session based on the updated subscriber data after updating the restored subscriber data. Communication control system. A subscriber database server that holds subscriber master data in which a subscriber serial number is associated with subscriber information corresponding to the subscriber serial number, and a session with reference to subscriber data that is synchronized with the subscriber master data. In a communication control system comprising a session control server to control,
The subscriber database server
When backup generation information is input from the session control server, the subscriber information updated since the backup generation and the subscriber differential data that associates the subscriber serial number of the subscriber information and the backup generation information are input. Differential data providing means for transmitting to the session control server subscriber serial number data that is a list of subscriber serial numbers of the subscriber master data when
The session control server
After the subscriber data is restored using the backup data of the subscriber data, the backup generation information that generated the backup data is transmitted to the subscriber database server, and the subscriber database server The subscriber differential data and the subscriber serial number data are acquired from the subscriber, the restored subscriber data is updated based on the acquired subscriber differential data, and the subscriber serial number subscription not included in the subscriber serial number data is acquired. A communication control system, comprising: difference data updating means for deleting subscriber information from the updated subscriber data. The session control server
The said differential data update means is further provided with the session control means which controls a session based on the said subscriber data after the update after updating the subscriber data after the said recovery | restoration, The Claim 3 characterized by the above-mentioned. Communication control system. A subscriber database server that holds subscriber master data in which a subscriber serial number is associated with subscriber information corresponding to the subscriber serial number, and a session with reference to subscriber data that is synchronized with the subscriber master data. In a communication control method used for a communication control system including a session control server to control,
A session control server, after restoring subscriber data using the backup data of the subscriber data, transmitting backup generation information that generated the backup data to the subscriber database server; ,
When the subscriber database server receives the backup generation time information from the session control server, the subscriber difference data associated with the subscriber information updated after the backup generation and the subscriber serial number of the subscriber information, and Sending subscriber deletion difference data, which is a list of subscriber serial numbers from which subscriber information has been deleted since the time of backup generation, to the session control server;
The session control server acquires the subscriber differential data from the subscriber database server, and updates the restored subscriber data based on the acquired subscriber differential data;
The session control server acquires the subscriber deletion differential data from the subscriber database server, and deletes the subscriber information of the subscriber serial number included in the subscriber deletion differential data from the updated subscriber data. A communication control method comprising the steps of: The communication according to claim 5, further comprising: a step of controlling the session based on the updated subscriber data after the session control server updates the restored subscriber data. Control method. A subscriber database server that holds subscriber master data in which a subscriber serial number is associated with subscriber information corresponding to the subscriber serial number, and a session with reference to subscriber data that is synchronized with the subscriber master data. In a communication control method used for a communication control system including a session control server to control,
A session control server, after restoring subscriber data using the backup data of the subscriber data, transmitting backup generation information that generated the backup data to the subscriber database server; ,
When the subscriber database server receives the backup generation time information from the session control server, the subscriber difference data associated with the subscriber information updated after the backup generation and the subscriber serial number of the subscriber information, and Sending subscriber serial number data, which is a list of subscriber serial numbers of the subscriber master data when backup generation time information is input, to the session control server;
The session control server acquires the subscriber differential data from the subscriber database server, and updates the restored subscriber data based on the acquired subscriber differential data;
The session control server acquires the subscriber sequence number data from the subscriber database server, and deletes subscriber information of the subscriber sequence number not included in the subscriber sequence number data from the updated subscriber data. A communication control method comprising: The communication according to claim 7, further comprising: a step of controlling the session based on the updated subscriber data after the session control server updates the restored subscriber data. Control method.

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