CN100407814C - Method and system for notifying the called terminal that the call is forwarded unconditionally - Google Patents

Abstract

The present invention provides a method for notifying a called terminal that a call is forwarded unconditionally, comprising the following steps: the calling terminal sends routing information to the home location register through the mobile switching center, and the information includes the identifier of the called terminal; the home location register According to the called terminal identifier, it is judged whether the called terminal has subscribed to unconditional forwarding and notifies the original called terminal. If the contract is signed, the home location register sends a notification message to the SMS center; called terminal. The invention also provides a system for notifying the called terminal that the call is forwarded unconditionally. The invention combines the unconditional forwarding supplementary service with the short message service, and notifies the original called terminal that there is call forwarding through the mobile terminal sending a short message, so that no matter what state the original called terminal is in (power on, power off or no network signal) Information such as the number and time of the forwarded call can be obtained by receiving a text message.

Description

Method and system for notifying the called terminal that the call is forwarded unconditionally

technical field

The invention relates to unconditional forwarding technology in the communication field, in particular to a method and system for notifying a called terminal that a call is unconditionally forwarded.

Background technique

There are many forms of call forwarding in the call establishment phase, such as unconditional call forwarding, call forwarding on busy, call forwarding on no answer, call diversion, etc. Its function is to divert an incoming call to the terminal to another Destination address, the destination address includes various forms, such as mobile phone number, fixed phone number, IP address, E-mail address or voice mail, etc.

Among them, the unconditional call forwarding service requires pre-setting the forwarding destination address. When the terminal selects this service, all incoming calls will be forwarded to the pre-set destination address, and the terminal will no longer have ringing and other prompts. For example, A is the calling terminal, B is the called terminal, and the called terminal B subscribes to unconditional call forwarding, and the forwarding number is set to C, then when the calling terminal A dials the called terminal B, the call will be forwarded to C.

The specific flow of the above unconditional forwarding is shown in Figure 1, including the following steps:

Step s101, the calling terminal sends call request information to MSC (Mobile Switch Center)/VLR (Visit Location Register, visitor location register), the information includes the address of the called terminal.

Step s102, MSC/VLR sends routing information SendRoutingInfo to HLR (Home Location Register, Home Location Register), the information includes the address of the called terminal.

Step s103, HLR learns that the called terminal has subscribed for unconditional forwarding by querying the database, and then sends the routing response message SendRoutingInfoCfg to the MSC/VLR, which carries forwarding information corresponding to the called terminal, including the address of the destination terminal .

In step s104, the MSC/VLR notifies the calling terminal according to the destination address in the forwarding information, and enables the calling terminal to establish a call connection with the destination terminal.

However, in the prior art, when a call to the original called terminal is unconditionally forwarded to the destination terminal, the original called terminal does not know, which may cause the original called terminal to miss some important information.

Contents of the invention

The problem to be solved by the present invention is to provide a method and system for notifying the called terminal that the call is forwarded unconditionally, so as to solve the defect in the prior art that the forwarded called terminal cannot know the forwarded information.

In order to solve the above problems, the present invention provides a method for notifying the called terminal that the call is forwarded unconditionally, including the following steps:

A. The calling terminal sends routing information to the home location register through the mobile switching center, and the information includes the identifier of the called terminal;

B. The home location register judges whether the called terminal has subscribed to unconditional forwarding according to the called terminal identifier and notifies the original called terminal. If signed, go to step C;

C. The home location register sends a notification message to the SMS center, and performs an unconditional forwarding call;

D. The short message center generates a notification short message according to the notification information, and sends it to the called terminal.

The notification information includes the address of the called terminal.

The method of signing unconditional forwarding and notifying the original called terminal in step B includes: the network signs unconditional forwarding and notifies the original called terminal or the user terminal signs unconditional forwarding and notifies the original called terminal.

The user terminal unconditionally forwards and notifies the original called terminal through unstructured supplementary service subscription.

The user terminal forwards unconditionally through the unstructured supplementary service contract and notifies the original called terminal further includes:

B11. The user terminal sends a registration unconditional forwarding request to the HLR, and the request information includes the address of the destination terminal;

B12. The home location register notifies the unstructured supplementary service center that there is an unconditional forwarding of user terminal registration;

B13. The unstructured supplementary service center sends the unstructured supplementary service request information to the user terminal;

B14. The user terminal sends request response information to the unstructured supplementary service center, and the information includes the request of the user terminal to be forwarded to a short message;

B15. The unstructured supplementary service center notifies the home location register of the registration result;

B16. The HLR sends a registration unconditional forwarding request response to the user terminal.

The home location register is integrated with the unstructured supplementary service center; the user terminal unconditionally forwards the call through the unstructured supplementary service contract and forwards the short message further includes:

B21. The user terminal sends a registration unconditional forwarding request to the HLR, and the request information includes the address of the destination terminal;

B22. The HLR sends unstructured supplementary service request information to the user terminal;

B23, the user terminal sends request response information to the home location register, and the information includes the request of the user terminal to be forwarded to the short message request;

B24. The HLR sends a registration unconditional forwarding request response to the user terminal.

The request response information also includes the address of the SMS center.

The information that the user terminal is required to be notified of the forwarded call and the address of the short message center are stored in the home location register.

The invention also discloses a system for notifying the called terminal that the call is forwarded unconditionally, including: the calling terminal, the home location register, the short message center, the mobile switching center and the called terminal,

The home location register is used to send notification information to the SMS center when the calling terminal initiates a call request to the home location register through the mobile switching center, and the called terminal has signed an unconditional forwarding contract and signed a contract to notify the original called party;

The short message center is used to generate a notification short message and send it to the called terminal through the mobile switching center.

The notification information carries forwarding information, instructing the short message center to notify the original called party of unconditional call forwarding by short message.

Compared with the prior art, the present invention has the following advantages:

The invention combines the unconditional forwarding supplementary service with the short message service, and notifies the original called terminal that there is call forwarding through the mobile terminal sending a short message, so that no matter what state the original called terminal is in (power on, power off or no network signal) Information such as the number and time of the forwarded call can be obtained by receiving a text message.

Description of drawings

Fig. 1 is the flowchart of prior art unconditional call forwarding;

Fig. 2 is the flow chart of the method for notifying the called terminal of the present invention that the call is forwarded unconditionally;

Fig. 3 is a flow chart of the user terminal unconditionally forwarding and notifying the original called terminal through the unstructured supplementary service subscription of the present invention;

Fig. 4 is a flow chart of a specific embodiment of the present invention;

Fig. 5 is a structural diagram of the system for notifying the called terminal that the call is unconditionally forwarded according to the present invention.

Detailed ways

Specific embodiments of the present invention are described below in conjunction with accompanying drawing:

A method of notifying the called terminal of the present invention that the call is forwarded unconditionally, as shown in Figure 2, includes the following steps:

In step s201, the calling terminal sends routing information to the home location register through the mobile switching center, and the information includes the identifier of the called terminal.

In step s202, the home location register judges whether the called terminal subscribes to unconditional forwarding according to the called terminal identifier and notifies the original called terminal. If subscribed, go to step s203. If only the unconditional forwarding is signed but the original called terminal is not notified, only the unconditional forwarding is performed. Wherein, the HLR searches the database for the stored information of the called terminal according to the called terminal identifier, so as to obtain the subscription status of the called terminal.

In step s203, the HLR sends notification information to the SMS center. Wherein, the notification information includes the address of the called terminal and forwarding information. The forwarding information is used to instruct the short message center to notify the called terminal of unconditional call forwarding, and the forwarding information further includes the address of the calling terminal and/or the subscription address of the called terminal for unconditional forwarding.

In step s204, the short message center generates a notification short message according to the notification information, and sends it to the called terminal. Wherein, the notification short message includes the forwarded destination address and/or the time of the forwarded call and/or the address of the calling terminal of the forwarded call.

In step s202, the methods of signing up for unconditional forwarding and notifying the original called terminal include: network signing up for unconditional forwarding and notifying the original called terminal or user terminal signing up for unconditional forwarding and notifying the original called terminal, wherein, signing up for unconditional forwarding notification through the network The original called service is: register the unconditional forwarding notification to the specific terminal directly on the network side, and store the information of these terminals in the HLR. The user terminal unconditionally forwards and notifies the original called terminal through the unstructured supplementary service contract. The specific process is shown in Figure 3, including:

In step s301, the user terminal sends a registration unconditional forwarding request to the HLR, and the request information includes the address of the destination terminal.

In step s302, the HLR notifies the unstructured supplementary service center that there is a user terminal registered for unconditional forwarding, and stores the information in the database.

In step s303, the unstructured supplementary service center sends unstructured supplementary service request information to the user terminal.

Step s304, the user terminal sends request response information to the unstructured supplementary service center, the information includes the information that the user terminal requests to be notified of the forwarded call, and the request response information may also include the terminal identification and the address of the SMS center, of course, the SMS Center address is optional.

In step s305, the unstructured supplementary service center notifies the HLR of the registration result. If the address of the SMS center is not obtained, the HLR searches the database for the current location of the terminal and the address of the SMS center that can provide the SMS service according to the terminal identifier carried in the terminal information, and stores the information in the HLR database.

In step s306, the HLR sends a registration unconditional forwarding request response to the user terminal.

In addition, the above process is only a specific implementation mode, and the unstructured supplementary service center can also be integrated with the location home register or the mobile switching center, and directly send and receive the unstructured supplementary service at the home location register or the mobile switching center. It specifically includes the following steps: the user terminal sends a registration unconditional forwarding request to the home location register, and the request information includes the destination terminal address; the home location register sends unstructured supplementary service request information to the user terminal; the user terminal sends a request to the home location register Response information, which includes a short message request that the user terminal requests to be forwarded; the home location register sends a registration unconditional forwarding request response to the user terminal.

The present invention is specifically described below with embodiment, as shown in Figure 4:

Step s401, the calling terminal sends the routing information SendRoutingInfo to the HLR through the mobile switching center/visit location register, and the HLR searches the database according to the called number in the routing information, and judges that the called party has signed an unconditional Transfer and sign a contract to notify the original called service.

In step s402, the HLR sends SMS notification information alertServiceCentreEx to the SMS center, and the information carries a newly added cell Forward-Alert, instructing the SMS center to notify the original called party of forwarding by SMS. Among them, the Forward-Alert information element includes CallingNumber and ForwardNumber, CallingNumber is the number of the calling terminal (that is, the calling number that initiates the SRI request), and ForwardNumber is the contract number for the called terminal to sign an unconditional forwarding contract. The calling number and the forwarding number are sent to the SMS center, and the SMS center is notified to trigger the unconditional forwarding notification service.

In step s403, the short message center constructs a short message and sends it to the called party. The content of the short message is XX point XX point XX on XX month XX in XX. called terminal.

In step s404, the SMS center sends an alertServiceCentreExCfg to the HLR, and the message carries the content of the above-mentioned SMS.

In step s405, the HLR sends the routing response message SendRoutingInfoCfg to the MSC/VLR, and the message carries the unconditional forwarding destination terminal address.

The present invention also provides a system for notifying the called terminal that the call is forwarded unconditionally, as shown in FIG. Center 50. Wherein, it is assumed that the user terminal A10 is the calling terminal, and the user terminal B20 is the called terminal that subscribes to the unconditional forwarding service and notifies the original called party of the forwarded call service. When the subscriber terminal A10 initiates a call request to the mobile switching center/visitor location register 30, the mobile switching center/visitor location register 30 then sends the route request information to the home location register 40, which includes the user identification of the subscriber terminal B20; The register 40 discovers that the user terminal B20 has subscribed to unconditional forwarding by searching the database and notifies the original called party of the forwarded call service, then invokes the forwarding destination address signed by it, and initiates a call to the destination terminal through the mobile switching center/visitor location register 30. call, and send notification information to the short message center; the short message center 50 generates a notification short message, and sends it to the user terminal B20 by the mobile switching center 30, notifying that it has been unconditionally forwarded the call and the call related information, for example, the user terminal B20 receives Received a text message "XXXX, XX, XX, XX, XX, XX, XXXXX number called this terminal will be forwarded to XXXXX number".

The above is only a preferred embodiment of the present invention, it should be pointed out that, for those of ordinary skill in the art, without departing from the principle of the present invention, some improvements and modifications can also be made, and these improvements and modifications can also be made. It should be regarded as the protection scope of the present invention.

Claims (10)

1. a method of notifying terminal called to be called out by Call Forwarding Unconditional is characterized in that, may further comprise the steps:

A, calling terminal send to attaching position register by mobile switching centre and send routing information, and comprise the terminal called sign in this information;

B, attaching position register judge whether signatory Call Forwarding Unconditional and notify former terminal called of terminal called according to this terminal called sign, if contract, then change step C;

C, attaching position register send announcement information to sms center, and carry out Call Forwarding Unconditional and call out;

D, sms center generate notifying messages according to this announcement information, and send to terminal called.

2. the method for notifying terminal called to be called out by Call Forwarding Unconditional according to claim 1 is characterized in that, described announcement information comprises the terminal called address.

3. the method for notifying terminal called to be called out according to claim 1 by Call Forwarding Unconditional, it is characterized in that the described signatory Call Forwarding Unconditional of step B and notify former terminal called mode to comprise: network contraction Call Forwarding Unconditional and notify former terminal called or the signatory Call Forwarding Unconditional of user terminal and notify former terminal called.

4. the method for being called out by Call Forwarding Unconditional as notice terminal called as described in the claim 3 is characterized in that, user terminal is by the signatory Call Forwarding Unconditional of non-constructed supplementary business and notify former terminal called.

5. the method for being called out by Call Forwarding Unconditional as notice terminal called as described in the claim 4 is characterized in that, user terminal is by the signatory Call Forwarding Unconditional of non-constructed supplementary business and notify former terminal called further to comprise:

B11, user terminal send the request of registration Call Forwarding Unconditional to attaching position register, comprise the purpose terminal address in this solicited message;

There is user's endpoint registration Call Forwarding Unconditional at B12, attaching position register notice non-constructed supplementary business center;

The mind-set user terminal sends the non-constructed supplementary business solicited message in B13, the non-constructed supplementary business;

B14, user terminal send the request response message to the non-constructed supplementary business center, comprise in this request response message that the user terminal requirement is by the request of preceding commentaries on classics note;

Attaching position register is notified with registering result in B15, non-constructed supplementary business center;

B16, attaching position register send registration Call Forwarding Unconditional request response to user terminal.

6. the method for being called out by Call Forwarding Unconditional as notice terminal called as described in the claim 4 is characterized in that attaching position register and non-constructed supplementary business center are integrated; User terminal calls out by the signatory Call Forwarding Unconditional of non-constructed supplementary business and preceding commentaries on classics note further comprises:

B21, user terminal send the request of registration Call Forwarding Unconditional to attaching position register, comprise the purpose terminal address in this solicited message;

B22, attaching position register send the non-constructed supplementary business solicited message to user terminal;

B23, user terminal send the request response message to attaching position register, comprise in this request response message that the user terminal requirement is by the request of preceding commentaries on classics note;

B24, attaching position register send registration Call Forwarding Unconditional request response to user terminal.

7. the method for being called out by Call Forwarding Unconditional as notice terminal called as described in claim 5 or 6 is characterized in that, also comprises the sms center address in the described request response message.

8. the method for being called out by Call Forwarding Unconditional as notice terminal called as described in claim 5 or 6 is characterized in that, described user terminal requires notifiedly to be stored in the attaching position register by the information of forwarded calls and sms center address.

9. system that notifies terminal called to be called out by Call Forwarding Unconditional comprises: calling terminal, attaching position register, sms center, mobile switching centre and terminal called, it is characterized in that,

Described attaching position register is used for calling terminal and makes a call when request to attaching position register by mobile switching centre, and the signatory Call Forwarding Unconditional of terminal called and signatoryly notify formerly when called, sends announcement information to sms center;

Described sms center is used to generate notifying messages, and sends to terminal called by mobile switching centre.

10. the system of being called out by Call Forwarding Unconditional as notice terminal called as described in the claim 9 is characterized in that, carries Redirection Information in the described announcement information, the former called generation unconditioned call connection of indication sms center SMS notification.

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