WO2011127717A1

WO2011127717A1 - Method and system for data synchronization for internet work mobile number portability application

Info

Publication number: WO2011127717A1
Application number: PCT/CN2010/077009
Authority: WO
Inventors: 孙望; 许可喜; 吴丽梅
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-04-12
Filing date: 2010-09-16
Publication date: 2011-10-20
Also published as: CN101815285A; CN101815285B

Abstract

A method and a system for data synchronization for internet work mobile number portability application are provided. The method involves: a main E.164 number ENUM system/domain name system DNS receives and loads number portability increment file information sent by a number portability database, wherein the number portability increment file information comprises: the association information of a user mobile number and an access network identifier(101); the number portability increment file information is sent to a backup ENUM system/DNS by the main ENUM system/domain name system DNS after successfully loading the number portability increment file information(102); the backup ENUM system/DNS receives the number portability increment file information, and notifies the main ENUM system/DNS after successfully loading the number portability increment file information(103).

Description

Data synchronization method and system in internet mobile number portability application

The present invention relates to the field of mobile communications, and in particular, to a method and system for synchronizing data in an inter-network mobile number carrying application of an E.164 number (ENUM, E.164 Number) System/Domain Name System (DNS). Background technique

The Ministry of Industry and Information Technology issued a document to carry out the implementation of mobile number portability between networks. NP (Number Portability), that is, the user carries the number to the network, and selects a better carrier through the network when the mobile number is unchanged. After the number portability is implemented, the user's mobile number (MSISDN, Mobile Subscriber International ISDN) cannot characterize which network it belongs to. Therefore, in order to find the target network or the target switching node, each carrier network specifies a routing number ( RN, Routing Number ), used to characterize the carrier network.

Since one MSISDN corresponds to one RN number and the amount of information is very large, China Telecom has added a Number Portability Database (NPDB), which includes but is not limited to a Sybase database, which stores NP data of all mobile numbers of the telecommunications, among which Including the MSISDN and the incoming network id (identity), the obtained RN information can be known by the incoming network id. The NP data of all mobile numbers of the telecommunications, including the RN information of the network carried by the MSISDN. The ENUM system/DNS client MMS center needs the ENUM system/DNS to include the RN information in the result of each query, to determine where to forward. The structure of China Telecom's ENUM system/DNS is the active and standby ENUM system/DNS. Each system has its own multiple business machines. The NPDB and the main ENUM system/DNS are deployed together. If multiple business machines check the RN information and forward the MMS center to the NPDB, a query process will be added to affect the system performance, and once the NPDB fails, the entire service will be affected. Therefore it is necessary to put the NPDB The data is synchronized to the ENUM system/DNS, but there is a problem of how to synchronize the two in real time, because the carrier number is carried out at any time, and the data in the NPDB is also updated in real time. Summary of the invention

In order to reduce the deployment cost and improve the stability and response speed of the ENUM system/DNS, the embodiment of the present invention provides a data synchronization method and system in an inter-network mobile number portability application, and the technical solution is as follows:

A method for data synchronization in an inter-network mobile number application, comprising: a primary E.164 number ENUM system/domain name system DNS receiving number carrying a number carried by a database carrying incremental file information, and loading, wherein the number carries The quantity file information includes: the association information of the user mobile number and the carried network identifier; after the primary ENUM system/DNS successfully loads the number carrying the incremental file information, the primary ENUM system/DNS sends the number carrying incremental file information to the standby ENUM system/DNS; The standby ENUM system/DNS receives the number and carries the incremental file information and loads it.

The step of the primary ENUM system/DNS receiving number carrying database carrying the incremental file information includes: the primary ENUM system/DNS receiving the serial number query message sent by the number carrying database, and sending the first serial number to The number portability database; the number portability database determines whether the first difference between the current serial number and the first sequence number that is queried is a preset value, and when the first difference is a preset value, The primary ENUM system/DNS sends the number carrying delta file information.

The method further includes: when the number portability database determines that the first difference value is not the preset value, then an alarm is generated.

The step of the primary ENUM system/DNS sending the number carrying incremental file information to the standby ENUM system/DNS includes: the primary ENUM system/DNS, after loading the number carrying the incremental file information, the first sequence Change the preset value, and send a serial number query message to the standby ENUM system/DNS; the standby ENUM system/DNS queries according to the serial number a message, the second serial number is sent to the primary ENUM system/DNS; the primary ENUM system/DNS determines whether the second difference between the second serial number and the current serial number is the preset value; When the second difference is a preset value, the primary ENUM system/DNS sends the number carrying incremental file information to the standby ENUM system/DNS.

The step of notifying the primary ENUM system/DNS after the backup ENUM system/DNS receives the number carrying the incremental file information, and after successfully loading the number carrying the incremental file information, includes: the standby ENUM system/DNS is After the loading succeeds that the number carries the incremental file information, the primary ENUM system/DNS is notified, and the second serial number is changed by a preset value.

After the loading ENUM system/DNS successfully loads the number carrying the incremental file information, notifying the primary ENUM system/DNS, and changing the second serial number to a preset value includes: preparing the ENUM system The backup device of the /DNS notifies the primary notify device of the primary ENUM system/DNS after loading the number carrying the incremental file information, and changes the second serial number to the preset value; The notify device obtains the third serial number from the second plurality of service machines of the standby ENUM system/DNS by using the serial number query message, and determines whether the third difference between the current serial number and the third serial number is the a preset value, when the third preset difference is a preset value, sending the number carrying incremental file information to the second plurality of service machines; and the second plurality of service machines loading the number carrying The file information is incremented, and after the loading is successful, the third serial number is changed by the preset value.

The method further includes: the multimedia message service center MMSC to which the calling user belongs receives the multimedia message sent by the calling user, the multimedia message includes the called user identifier; and the MMSC to which the calling user belongs sends the query to the primary/secondary ENUM system/DNS. Requesting, querying the MMSC to which the called user belongs, the query request including the called user identifier; and the primary/backup ENUM system/DNS querying the local database for the routing number corresponding to the called user identifier according to the query request After determining that the called user is another operator according to the routing number, sending the multimedia message to the called user according to the routing number. A system for data synchronization in an internet mobile number application, comprising:

The primary ENUM system/DNS is configured to receive and upload the incremental file information sent by the number portability database, where the number carrying the incremental file information includes: the associated information of the user mobile number and the carried network identifier; After successfully loading the number carrying incremental file information, sending the number carrying incremental file information to the standby ENUM system/DNS;

The ENUM system/DNS is configured to receive the incremental file information of the number, and notify the primary ENUM system/DNS after successfully loading the number carrying the incremental file information.

The primary ENUM system/DNS includes a primary notify device and a first plurality of service machines, and the primary notify device and the first plurality of service machines are configured to receive a serial number query message sent by the number portability database, and the first serial number is Sended to the number portability database;

The number carrying database is specifically configured to determine whether the first difference between the current serial number and the first serial number that is queried is a preset value, and when the first difference is a preset value, The primary notify device and the first plurality of service machines send the number carrying delta file information, and change the first serial number to the preset value.

The primary ENUM system/DNS is further configured to: after loading the number carrying the incremental file information, change the first serial number to a preset value, and send the identifier to the standby notify device of the standby ENUM system/DNS. Serial number query message;

The standby notify device is configured to send a second serial number to the ENUM system/DNS according to the serial number query message;

The primary ENUM system/DNS is further configured to determine whether the second difference between the second serial number and the current serial number is a preset value; when the second difference is a preset value, the primary ENUM The system/DNS sends the number carrying delta file information to the standby notify device.

The ENUM system/DNS includes a standby notify device and a second number of business machines.

The standby notify device is configured to notify the primary notify device after loading the number carrying the incremental file information, and change the second serial number to the preset value; The serial number query message obtains a third serial number from the second plurality of service machines, and determines whether the third difference between the current serial number and the third serial number is the preset value, when the third When the preset difference is a preset value, the number carrying incremental file information is sent to the second plurality of service machines;

And the second plurality of service machines are configured to load the number carrying incremental file information, and after the loading is successful, change the third serial number to the preset value.

The embodiment of the present invention carries the incremental file information and the loading of the number carried by the primary ENUM system/DNS receiving number carrying database, wherein the number carrying the incremental file information includes: the associated information of the user mobile number and the carried network identifier; After the ENUM system/DNS successfully loads the number and carries the incremental file information, it sends the number to the standby ENUM system/DNS to carry the incremental file information. The standby ENUM system/DNS receives the number and carries the incremental file information, and successfully loads the number. After the number carries the incremental file information, the primary ENUM system/DNS is notified, and the ENUM system/DNS is used to query the routing number. The number portability database is not required for each ENUM system/DNS, which reduces the deployment cost. Carrying the database, such as the performance requirements of the NPDB is reduced, the number portability database is only responsible for accepting the real-time data update of the upper-level network element, and synchronizing to the ENUM system/DNS, improving the response speed and processing efficiency of the system; avoiding the failure of the number portability database After affecting other businesses, improving system stability . DRAWINGS

1 is a schematic flowchart of a method for data synchronization in an inter-network mobile number portability application according to an embodiment of the present invention;

2 is a schematic diagram of a data synchronization message interaction process of a primary ENUM system/DNS according to an embodiment of the present invention;

3 is a schematic diagram of a data synchronization message interaction process between an active and standby ENUM system/DNS according to an embodiment of the present invention;

4 is a data synchronization message interaction of a standby ENUM system/DNS according to an embodiment of the present invention. Schematic diagram of the process;

FIG. 5 is a schematic diagram of an ENUM/DNS service machine supporting a multimedia message sending service in a number portability network according to an embodiment of the present invention; FIG.

FIG. 6 is a system structural diagram of data synchronization in an internet mobile number application according to an embodiment of the present invention. detailed description

The core idea of the present invention is: The number sent by the primary ENUM system/DNS receiving number carrying database carries the incremental file information and is loaded, wherein the number carrying the incremental file information includes: the associated information of the user mobile number and the carried network identifier After the primary ENUM system/DNS successfully loads the number and carries the incremental file information, the primary ENUM system/DNS sends the number to carry the incremental file information; the standby ENUM system/DNS receives the number and carries the incremental file information, and After successfully loading the number and carrying the incremental file information, the main ENUM system/DNS is notified, which reduces the deployment cost and improves the stability and response speed of the ENUM system/DNS.

The embodiment of the invention provides a method for data synchronization in an internet mobile number application, as shown in FIG. 1 , which includes:

Step 101: The primary ENUM system/DNS receives the number-carrying file information sent by the number-carrying database, and loads the information, where the number carrying the incremental file information includes: the associated information of the user mobile number and the carried network identifier;

Step 102: After successfully loading the number and carrying the incremental file information, the primary ENUM system/DNS sends the number to the standby ENUM system/DNS to carry the incremental file information;

Step 103: The ENUM system/DNS receives the number and carries the incremental file information, and notifies the main ENUM system/DNS after successfully loading the number and carrying the incremental file information.

Further, the step of the primary ENUM system/DNS receiving the number carried by the number carrying database carrying the incremental file information includes:

The main notification (notify) device in the primary ENUM system/DNS and the first number of business machines receive The serial number query message sent by the number portability database, and the first serial number is sent to the number portability database;

The number portability database determines whether the first difference between the current serial number and the first sequence number that is queried is a preset value. When the first difference is a preset value, the primary notify device and the first number of service machines are The sending number carries the incremental file information.

Further, when the number portability database determines that the first difference is not a preset value, the alarm is generated. Further, the steps of the primary ENUM system/DNS sending the number carrying incremental file information to the standby ENUM system/DNS include:

After the loading completion number carries the incremental file information, the primary notify device in the primary ENUM system/DNS changes the first serial number by a preset value, and sends a serial number query message to the standby notify device of the ENUM system/DNS;

The notify device sends a second serial number to the primary notify device according to the serial number query message; the primary notify device determines whether the second difference between the queried second serial number and the current serial number is a preset value; When the value is a preset value, the primary notify device sends the number carrying delta file information to the standby notify device.

Further, the ENUM system/DNS receiving number carries the incremental file information, and the step of notifying the primary ENUM system/DNS after successfully loading the number carrying the incremental file information includes: preparing the ENUM system/DNS backup notify device to be successfully loaded After the number carries the incremental file information, the main notify device is notified, and the second serial number is changed by a preset value;

The notify device obtains the third serial number from the second plurality of service machines of the standby ENUM system/DNS through the serial number query message, and determines whether the third difference between the current serial number and the third serial number of the query is a preset. The value, when the third preset difference is a preset value, sending the number carrying incremental file information to the second plurality of business machines;

The second plurality of service machines load the number to carry the incremental file information, and after the loading is successful, change the third serial number to a preset value. Further, the method further includes:

The multimedia message service center (MMSC) to which the calling user belongs receives the multimedia message sent by the calling user, and the multimedia message includes the called user identifier; the MMSC to which the calling user belongs sends a query to the primary/secondary ENUM system/DNS. Requesting, querying the MMSC to which the called user belongs, and the query request includes the called user identifier;

The primary/backup ENUM system/DNS queries the local database for the routing number corresponding to the called user identifier according to the query request;

After determining that the called user is another operator according to the routing number, the MMS is sent to the called user according to the routing number.

The embodiments of the present invention are described in detail below with reference to specific embodiments and drawings. Figure 2 shows the data synchronization message interaction flow chart of the main ENUM system/DNS. The main ENUM system/DNS has 4 main network elements, the main notify device and 3 business machines. In this embodiment, the number of network elements is only required for the sake of example, and is not limited thereto.

In order to ensure data consistency of the entire system, this embodiment introduces the concept of a serial number. If there is a change in the data on the NPDB, a number carrying incremental file will be generated (step 201). Taking the 21st update as an example, the serial number of the updated NPDB is changed from 20 to 21, and NP0000000020-0000000021.ixf is generated, and the file indicates the 20th. The number from the next to the 21st update carries the delta file, and the contents of the file are the execution sql statements of those mobile numbers that are changed in this update, such as insert into tbl_NP2 values ('13813829772', O0330220'). The tbl_NP2 is the sql table name created on the ENUM system/DNS, and is used to store the last digit of the mobile number and its corresponding network id. There are 10 such tables, which store the mobile number information with the last digits of 0 to 9 respectively. The following 00330220 is the network id, which means that the incoming network is the China Telecom CDMA network, according to the correspondence between the network id and the RN information. The RN information corresponding to the carried network id is 1241, that is, China Telecom.

The interaction between the NPDB and the primary ENUM system/DNS is as follows: The NPDB sends a sequence number query message to the primary notify device and the three service machines, respectively, and queries the sequence numbers on the four network elements (step 202).

If the NPDB does not receive the response of the sequence number query message returned by any of the four network elements, an alarm is required, and the manual operation is resumed, and the synchronization process is terminated. Alternatively, the NPDB receives the response of the serial number query message returned by all four network elements (step 203). At this time, the NPDB determines whether the sequence number in the received response is different from the current sequence number of the NPDB by 1 (step 204), if not equal to 1, an alarm is required, waiting for the manual operation to resume, and the synchronization process is terminated (step 205). The value 1 is only for the sake of example, and the scope of protection of the present invention is not limited thereto.

If the sequence number of the NPDB is different from the current sequence number of the NPDB, the NPDB sends the updated number carrying incremental file to the four network elements according to the File Transfer Protocol (FTP). 206). If the sending of the updated number to any of the NEs fails to carry the delta file, the alarm is generated and waits for manual recovery. If the updated number carrying delta file is successfully sent to the four network elements, they are notified to load the number carrying delta file and recorded in the database (step 207). Each network element loads the number carrying delta file into the database (step 208), and after the loading is successful, changes its serial number from 20 to 1 to 21, and returns a response to the NPDB to indicate whether the loading is successful ( Step 209). If the NPDB does not receive a response that the four NEs are successfully loaded, the alarm is generated and waits for manual recovery.

FIG. 3 is a flow chart of data synchronization message exchange between the active and standby ENUM systems/DNS in the embodiment, and the detailed process is as follows:

After the primary notify device successfully updates the number carrying incremental file, it sends a serial number query message to the standby notify device, and queries the serial number on the standby device (step 301).

If the primary notify device does not receive the response of the sequence number query message returned by the standby notify device, an alarm is required, and the manual operation is resumed, and the synchronization process is terminated. Alternatively, the primary notify device receives the response of the sequence number query message returned by the standby notify device (step 302), and determines the response. Whether the serial number in the current sequence number and the current serial number of the primary notify device are not equal to 1 (step 303), if not equal to 1, the alarm is waited for manual recovery, and the synchronization process is stopped (step 304).

If the sequence number queried by the primary notify device differs from the current serial number by one, the updated number carrying incremental file is sent to the standby notify device according to the FTP (step 305), and the message is sent to notify notify after the transmission is successful. The device is loaded (step 306).

After the notify device is successfully loaded, the serial number changes from 20 to 21 (step 307), and the main notify device is notified whether the loading is successful (step 308).

If the primary notify device does not receive a response that the standby notify is successfully loaded, it will alarm and wait for the manual recovery.

As shown in FIG. 4, the data synchronization message interaction process of the ENUM system/DNS is provided in the embodiment. The ENUM system/DNS has four main network elements, a notify device, and three service machines. The detailed process is as follows:

After receiving the serial number query message sent by the primary notify device, the notify device first sends a serial number query message to the three service machines, and queries the serial numbers on the three service machines (step 401).

If the notify device does not receive the response of the sequence number query message returned by the three service machines, an alarm is required, and the manual operation is resumed, and the synchronization process is terminated. Alternatively, the standby device receives the response of the serial number query message returned by the three business machines (step 402), and determines whether the serial number in the response and the current serial number of the standby notify device are not equal to one (step 403), if If any difference is not equal to 1, then an alarm is issued, waiting for manual recovery, and the synchronization process is stopped (step 404).

If the difference between the serial number and the current serial number of the standby device is equal to 1, the number carrying incremental file is sent to the three service machines according to the FTP (step 405), and the message is sent after the successful transmission. The three business machines load the number carrying the delta file (step 406).

After the three service machine loading numbers carry the incremental file successfully (step 407), the serial number changes from 20 to 21 (step 408), and notifies the standby device whether the loading is successful (step 409). If the notify device does not receive the response that the three service machines are successfully loaded, it will alarm and wait for manual recovery.

FIG. 5 is a schematic diagram of the inter-network MMS sending service after the ENUM/DNS service machine supports the number carrying in the embodiment.

Taking the user A of Beijing Telecom to send a short message to Tianjin Mobile User B as an example, the MMSC of Beijing Telecom will query, that is, the MMSC A to which the calling user belongs is queried when querying the ENUM system/DNS to obtain the MMSC address of the called user. It can be known whether the user is still moving or has moved out to Unicom or Telecom, and routes are selected accordingly. Since the user attribution is dynamic, each route needs to go to the ENUM system/DNS for query. specifically ,

The mobile subscriber A is connected to a Packet Data Serving Node (PDSN) network and sends a multimedia short message to the MMSC A through a Wireless Application Protocol (WLAN) gateway (the WAP GW). The called subscriber number is MSISDN B. .

MMSC A queries the ENUM system/DNS according to the called subscriber number to find the MMSC to which the called subscriber belongs.

The ENUM system/DNS queries the local database according to the called number and finds that the called user is the user of the carrier network. Therefore, the response is sent to the MMSC A, where the called number and its corresponding RN information are sent.

MMSC A sends the multimedia message to the multimedia interworking gateway (MMSIG, according to the RN of the called number.

MMS Gateway) A.

MMSIG A sends the MMS to the MMSIG B of the called subscriber's home network according to the RN number. The embodiment of the invention provides a system for data synchronization in an internet mobile number application, as shown in FIG. 6, which includes:

The primary ENUM system/DNS is configured to receive the incremental file information and the loading of the number carried by the number portability database, where the number carrying the incremental file information includes: the associated information of the user mobile number and the carried network identifier; The primary ENUM system/DNS is further configured to send the number carrying incremental file information to the standby ENUM system/DNS after successfully loading the number carrying incremental file information;

The standby ENUM system/DNS is configured to receive the number carrying incremental file information, and notify the primary ENUM system/DNS after successfully loading the number carrying incremental file information.

Further, the primary ENUM system/DNS includes a primary notify device and a first plurality of service machines, and the primary notify device and the first plurality of service machines are configured to receive a serial number query message sent by the number portability database, and the first sequence is The number is sent to the number portability database; the number portability database is configured to determine whether the first difference between the current serial number and the first sequence number that is queried is a preset value, and when the first difference is a pre- When the value is set, the number carrying incremental file information is sent to the primary notify device and the first plurality of service machines, and the first serial number is changed by the preset value.

Further, the primary notify device is further configured to: after the loading of the number carrying the incremental file information, change the first serial number to the preset value, and send the preset device to the standby ENUM system/DNS Sending the serial number query message; the standby notify device, configured to send, according to the serial number query message, a second serial number to the primary notify device; the primary notify device, configured to determine the second Whether the second difference between the serial number and the current serial number is the preset value; when the second difference is a preset value, the primary notify device sends the number carrying increment to the standby notify device File information.

Further, the standby notify device is configured to notify the primary notify device after loading the number carrying the incremental file information, and change the second serial number to the preset value; The device is further configured to obtain, by using a serial number query message, a third serial number from the second plurality of service machines of the standby ENUM system/DNS, and determine whether the third difference between the current serial number of the self and the third serial number is For the preset value, when the third preset difference is a preset value, the number carrying incremental file information is sent to the second plurality of service machines; the second plurality of service machines, Used to load the number to carry the incremental file information, and load it into After the work, the third serial number is changed by the preset value.

The embodiment of the present invention carries the incremental file information and the loading of the number carried by the primary ENUM system/DNS receiving number carrying database, wherein the number carrying the incremental file information includes: the associated information of the user mobile number and the carried network identifier; After the primary ENUM system/DNS successfully loads the number and carries the incremental file information, it sends the number to the standby ENUM system/DNS to carry the incremental file information; the standby ENUM system/DNS receives the number and carries the incremental file information, and succeeds. After loading the number to carry the incremental file information and notifying the main ENUM system/DNS, the following beneficial effects can be achieved:

1) ENUM system/DNS is used to query the routing number of the called party's called party without increasing the MMS service flow, so as to avoid adding new functions to affect the processing efficiency of ENUM system/DNS and reduce the deployment cost.

2) Since the ENUM system/DNS is used to query the routing number of the MMS called party, when the MMS service is performed, the number portability database, such as the NPDB, is not required to be queried, thereby avoiding the failure of the number portability database, thereby affecting the national service. Improve the stability of the system.

3) Since the ENUM system/DNS supports the query of the MMS called party routing number, there is no need to carry a database, such as NPDB, for each ENUM system/DNS deployment number, which further reduces the deployment cost.

4) The performance requirements of the number portability database, such as NPDB, are reduced. The number portability database is only responsible for accepting the real-time data update of the upper-level network element and synchronizing to the main ENUM system/DNS, which improves the response speed and processing efficiency of the system.

It should be noted that the above embodiments are only intended to illustrate the technical solutions of the present invention and are not intended to be limiting, and the present invention will be described in detail with reference to the preferred embodiments. Changes or equivalents may be substituted without departing from the spirit and scope of the invention and the claims.

Claims

Claim

A method for data synchronization in an inter-network mobile number portability application, comprising: a primary E.164 number ENUM system/domain name system DNS receiving number carrying a number carried by a database carrying incremental file information, and loading, The number carrying the incremental file information includes: association information between the user mobile number and the carried network identifier;

After successfully loading the number carrying incremental file information, the primary ENUM system/DNS sends the number carrying incremental file information to the standby ENUM system/DNS;

The ENUM system/DNS receives the number and carries the incremental file information and loads it.

2. The method according to claim 1, wherein the step of the primary ENUM system/DNS receiving the number carried by the number carrying database carrying the incremental file information comprises:

The primary ENUM system/DNS receives the serial number query message sent by the number portability database, and sends the first serial number to the number portability database;

The number portability database determines whether the first difference between the current serial number and the first sequence number that is queried is a preset value. When the first difference is a preset value, the primary ENUM system is The DNS sends the number carrying the delta file information.

The method according to claim 2, wherein the method further comprises: when the number carrying database determines that the first difference is not the preset value, an alarm is generated.

4. The method according to claim 1, wherein the step of the primary ENUM system/DNS transmitting the number carrying incremental file information to the standby ENUM system/DNS comprises:

After loading the number carrying incremental file information, the primary ENUM system/DNS changes the first serial number by a preset value, and sends a serial number query message to the standby ENUM system/DNS;

The standby ENUM system/DNS queries the message according to the serial number, and sends the second serial number to the primary ENUM system/DNS;

The primary ENUM system/DNS determines a second difference between the second serial number and the current serial number Whether the value is the preset value; when the second difference is a preset value, the primary ENUM system/DNS sends the number carrying incremental file information to the standby ENUM system/DNS.

The method according to claim 1, wherein the standby ENUM system/DNS receives the number carrying incremental file information, and notifies the primary ENUM after successfully loading the number carrying incremental file information. The system/DNS step includes: after the loading of the number carries the incremental file information, the standby ENUM system/DNS notifies the primary ENUM system/DNS, and changes the second serial number by a preset value.

The method according to claim 5, wherein the standby ENUM system/DNS notifies the primary ENUM system/DNS after loading the number carrying incremental file information, and the second The steps of changing the preset value of the serial number include:

The backup device of the standby ENUM system/DNS notifies the primary notify device of the primary ENUM system/DNS after loading the number carrying the incremental file information, and changes the second serial number to the preset Numerical value

The standby notify device obtains a third serial number from the second plurality of service machines of the standby ENUM system/DNS by using a serial number query message, and determines whether the third difference between the current serial number and the third serial number is For the preset value, when the third preset difference is a preset value, the number carrying incremental file information is sent to the second plurality of service machines;

And loading, by the second plurality of service machines, the number carrying incremental file information, and after the loading is successful, changing the third serial number to the preset value.

The method according to any one of claims 1 to 6, wherein the method further comprises:

The MMSC that the calling user belongs to receives the multimedia message sent by the calling user, and the multimedia message includes the called user identifier;

The MMSC to which the calling user belongs sends an inquiry request to the primary/backup ENUM system/DNS to query the MMSC to which the called user belongs, and the query request includes the called user identifier; The primary/backup ENUM system/DNS queries the local database for the routing number corresponding to the called user identifier according to the query request;

After determining that the called user is another operator according to the routing number, sending the multimedia message to the called user according to the routing number.

A system for data synchronization in an inter-network mobile number portability application, comprising: a primary ENUM system/DNS, configured to receive a number file carrying incremental file information sent by a number portability database, and loading, wherein The number carrying incremental file information includes: association information between the user mobile number and the carried network identifier; and is further configured to send the number carrying incremental file to the standby ENUM system/DNS after successfully loading the number carrying the incremental file information. Information

9. The system of claim 8 wherein:

10. A system according to claim 8 or claim 9 wherein:

The standby notify device is configured to send a second serial number to the ENUM system/DNS according to the serial number query message; The primary ENUM system/DNS is further configured to determine whether the second difference between the second serial number and the current serial number is a preset value; when the second difference is a preset value, the primary ENUM The system/DNS sends the number carrying delta file information to the standby notify device.

11. The system of claim 10, wherein the ENUM system/DNS includes a notify device and a second plurality of business machines.

The standby notify device is configured to notify the primary notify device after loading the number carrying the incremental file information, and change the second serial number to the preset value; and further, use the serial number query Obtaining, by the second plurality of service machines, the third serial number, and determining whether the third difference between the current serial number and the third serial number is the preset value, when the third preset difference When the value is a preset value, the number carrying incremental file information is sent to the second plurality of business machines;