KR100801812B1 - Call forwarding method on multiple MSISDNs of one subscriber having one IMSI - Google Patents

Abstract

The intelligent call forwarding method in the multi-phone number service according to the present invention comprises: a call processing step of routing a call by requesting routing information for a subscriber when an incoming call request is made to a subscriber registered in the multi-phone number service; A comparison step of determining whether to transfer a call by comparing the information stored in the corresponding service logic with the information received in the call processing step; And a call transfer step of selectively connecting a call to a corresponding destination according to a result of the comparing step, and voice call an incoming call coming to a specific phone number at a specific time period by a request of a user who has subscribed to a multi-phone number service. (Voice Mail service; hereinafter referred to as VMS) or can be provided to intelligently automatically switch to another telephone number.

Description

Intelligent forwarding method in multi phone number service {Call forwarding method on multiple MSISDNs of one subscriber having one IMSI}

1 is a block diagram schematically illustrating a mobile communication system for performing a general multi-number service.

2 is a signal flow diagram illustrating an incoming call switching process according to the multi-number service shown in FIG.

3 is a signal network diagram illustrating a concept for implementing an intelligent call forwarding method in a multi-phone number service according to the present invention;

4 is a signal processing flowchart illustrating an example of switching an incoming call for a corresponding telephone number to a voice mailbox;

5 is a flow chart illustrating operation of a service control point (SCP) service logic.

The present invention relates to a call forwarding method in a multi-phone number service, and more particularly, an incoming call to a specific phone number according to a subscriber's request to a voice mail service (VMS) or another phone number for a specific time period. The present invention relates to a method of intelligent call forwarding in a multi-phone number service that is automatically switched to.

1 is a configuration diagram schematically illustrating a mobile communication system for performing a general multi-number service.

The mobile communication system includes a switching center, i.e., Mobile Switching Center (MSC) 1, a Home Location Register (HLR) 2 which performs subscriber location registration function, a radio link and a wired network. Base Transceiver Subsystem (BTS Controller) (BSC) 3 performing link control and hand-off functions, and a base transceiver station configuring a radio communication path and managing radio resources together with the mobile station 5 BST), which is connected wirelessly with a mobile station (MS) 5 to provide a Public Switching Telecommunication Network (PSTN) 6 and a Public Land Mobile Network (PLMN). (7). Here, the Visitor Location Register (VLR) 8 performs the location registration function of the mobile subscriber.

FIG. 2 is a signal flowchart illustrating an incoming call switching process according to the multi-number service shown in FIG. 1.

First, when a call origination occurs (call origination), the base station in which the call origination occurs makes a location request to the home location register 2, and the home location register 2 makes a routing request to the visitor location register 8.

The visitor location register 8 requests routing from the originating call to the corresponding subscriber's telephone number of the base station where the called party requesting the incoming call exists, and the base station routes the calling party to the called party for the incoming call and routes the routing result to the visitor location. Inform the register 8.

The visitor location register 8 informs the home location register 2 of the routing result, and therefore the home location register 2 transmits a location information request response message to the base station.

Thus, a call is set up for an originating signal between base stations.

For example, in a CDMA2000-based mobile phone service, a multi-number service allows one subscriber to use multiple phone numbers.

The multi-number service provides a service by setting a dummy subscriber to be transferred to an original subscriber unconditionally.

However, in the multi-number service according to the prior art, there is a problem of not providing intelligent service according to the subscriber's circumstances and changing the first-class call forwarding because the subscriber cannot set the call forwards differently according to a desired time zone.

An object of the present invention for solving the above problems, voice call (Voice Mail service; VMS) or other incoming call coming to a specific phone number at a specific time zone by the request of a user subscribed to the multi-phone number service It is to provide a service to intelligently and automatically switch to a phone number.

Intelligent call forwarding method in the multi-phone number service of the present invention for achieving the above object,

A call processing step of routing a call by requesting routing information for the subscriber when an incoming call request is made to a subscriber registered in the multi-phone number service;

A comparison step of determining whether to transfer a call by comparing the information stored in the corresponding service logic with the information received in the call processing step; And

And a call transfer step of selectively connecting a call to a corresponding destination according to the result of the comparing step.

The above and other objects and features and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the Universal Mobile Telecommunications System (UMTS) service method, which is an asynchronous IMT2000 method, a plurality of terminal subscriber numbers (Mobile Station) are provided to a service subscriber in one subscriber identity number (hereinafter referred to as IMSI). International ISDN Number (hereinafter referred to as MSISDN) can be assigned.

Thus, UMTS subscribers can inform multiple MSISDNs to different people.

Accordingly, a UMTS service subscriber having a plurality of MSISDNs may occasionally need to switch an incoming call to a specific phone number to a VMS or another number so as not to be temporarily interrupted by the incoming call.

Accordingly, the present invention provides a service for intelligently and automatically converting an incoming call to a specific MSISDN to a VMS or another MSISDN at a specific time period by a request of a subscriber having a plurality of MSISDNs.

3 is a signal network diagram illustrating a concept for implementing an intelligent call forwarding method in a multi-phone number MSISDN service according to the present invention.

When an incoming call is requested from a public switched telephone network (hereinafter referred to as a PSTN) 10 to a subscriber whose multi-MSISDN service is registered, a Gateway Mobile Service Switching Center (hereinafter referred to as GMSC) (20). ) Transmits a Send Route Information (SRI) message to the Home Location Register (hereinafter referred to as HLR) 30 to the Mobile Application Part protocol. Request routing information.

The HLR 30 transmits the CSI (CAMEL Subscription Information) information stored in the GMSC 20 of the multi-telephone service subscriber in the SRI response message, and the GMSC 20 transmits the corresponding service switch of the switching center 40. The call is routed to Point 41 (hereinafter referred to as SSP).

Therefore, the SSP 41 sends an initial detection point (hereinafter referred to as IDP) message to a service control point (hereinafter referred to as SCP) 50 and a CAMEL (Customized Application for Mobile Network Enhanced Logic) operation unit ( CAMEL Application Part (hereinafter referred to as CAP) protocol.

SCP 50 determines whether to transfer by comparing MSISDN, transfer date, and time information stored in service logic with received MSISDN information.

First, when the transfer condition is established, the SCP 50 sends a connection message to the SSP 41 (hereinafter referred to as CON), and the SSP 41 transmits routing information to the GMSC 20. GMSC 20 connects the call to the destination (VMS or other MSISDN) using ISDN User Part (hereinafter referred to as ISUP) signaling (protocol).

On the other hand, if the transfer condition is not established, the SCP 50 sends a continuous operation message (hereinafter referred to as CUE) to the SSP 41 to perform general incoming call processing.

Subscribers registered in the multi-IMSIDN service are assigned with one IMSI and two or more MSISDNs, and the subscriber information is stored in the HLR 30.

In order to provide the subscriber with the intelligent call forwarding service for the multi-IMSIDN service, the subscriber must subscribe to the intelligent call forwarding service, and the related information is stored in the HLR 30 as Terminating CAMEL Subscription Information (T-CSI).

First, when a subscriber uses a terminal to activate a transfer service for a specific MSISDN, the MSISDN to be switched among multiple MSISDNs is designated, and the date and time range when the transfer is activated along with a destination telephone number or a VMS number. Enter.                     

In addition, subscribers can specify which MSISDN to switch among multiple MSISDNs directly to SCP 50 via TCP / IP using either wired internet (WEB) or wireless internet (WAP), along with destination telephone number or VMS number. Service activation information such as a date and time range when call transfer is activated may be input.

An example of a subscriber having one IMSI and five MSISDNs storing service activation information for each MSISDN is shown in [Table 1].

TABLE 1

IMSI (1) MSISDN (5) date Start time End time destination 08210312356789 01031230001 month 09:00 18:00 VMS 08210312356789 01031230002 anger 13:00 15:00 0161230001 08210312356789 01031230003 Number 11:00 12:00 VMS 08210312356789 01031230004 gold 18:00 22:00 0181230002 08210312356789 01031230005 Work 06:00 12:00 0161230003

In this case, the subscriber registered for the intelligent forwarding service in the multi- MSISDN service has one IMSI (08210312356789) and five MSISDNs (01031230001 to 01031230005).

As shown in [Table 1], the subscriber requests a call to MSISDN (01031230001) from 09:00 to 18:00 on Monday, or a call request to MSISDN (01031230003) from 11:00 to 12:00 on Wednesday. If the call is requested to MSISDN (01031230002) from 13:00 to 15:00 on Tuesday, call forwards to the destination phone number (0161230001), and to MSISDN (01031230004) on Friday from 18:00 to 22:00. When an incoming call is requested, the call is transferred to the destination phone number (0181230002), and when the incoming call is requested by MSISDN (01031230005) from 06:00 to 12:00 on Sunday, the call is forwarded to the destination phone number (0161230003).

Here, the service activation information (Table 1) input by the subscriber is stored in the SCP 50 by the CAMEL signal method.

FIG. 4 is a flowchart illustrating an example of converting an incoming call for a corresponding MSISDN into a VMS.

First, an incoming call request IAM (Initial Address Message) is input to the GMSC 20 using the ISUP protocol through the PSTN 10 (S1).

The GMSC 20 requests the subscriber information and the location information SRI using the MAP protocol to the HLR 30 in which the incoming call request terminal is registered (S2).

The HLR 30 requests the MSC 42 in which the subscriber is located by using the MAP protocol of the mobile station roaming number (hereinafter referred to as MSRN) of the subscriber (S3). This step S3 is referred to as a Provide Roaming Information (PRI) step.

Therefore, the MSC 42 in which the subscriber is located transmits the MSRN information to the HLR 30 using the MAP protocol (S4). This step S4 is referred to as a provision Roaming Information Acknowledgment (PRI Ack) step.

The HLR 30 transmits the received MSRN to the GMSC 20 so that call routing is performed (S5). This step S5 is called a Send Route Information Acknowledgment (SRI Ack) step.                     

GMSC 20 requests the incoming call routing to the exchange 40 where the subscriber is located (S6). That is, an initial address message (IAM) is requested to the exchange 40 using the ISUP protocol.

The exchange 40 requests call control to the SCP 50 because the called party is the incoming intelligent service subscriber (S7). That is, an Initial Detection Point (IDP) is requested to SCP 50 using the CAP protocol.

The SCP 50 determines the destination destination number by comparing the service information with the IMSI and MSISDN of the called terminal according to the service logic (S8).

When the SCP 50 satisfies the condition to switch to the VMS, it converts the corresponding VMS address into the called number and transmits a connection message (CAP Operation Message) using CON, that is, the CAP protocol (S9).

The exchange 40 requests the incoming call processing to the VMS 60 (S10). That is, the exchange 40 transmits an initial address message to the VMS 60 using the ISUP protocol.

The VMS 60 answers the incoming call (S11, S12, S13). That is, an Address Complete Message (ACM) is transmitted from the VMS 60 to the caller terminal through the PSTN 10 via the switch 40 and the GMSC 20 using the ISUP protocol.

An Answer Message (ANM) is transmitted from the VMS 60 to the caller terminal through the PSTN 10 via the switch 40 and the GMSC 20 using the ISUP protocol (S14, S15, S16).                     

Therefore, a call path is set between the caller and the VMS 60 so that the caller can leave a voice memo in the voicemail box (S17).

5 is a flow chart illustrating the operation of SCP service logic.

First, it is determined whether the incoming IMSI is a subscriber of the intelligent call forwarding service in the multi-MSISDN service (S21). If the subscriber is a subscriber, it is checked whether the incoming MSISDN is registered in the service information (S22).

It is confirmed whether today's date and current time are registered in the service information (S23, S24), and an incoming routing command is transmitted to the destination registered in the service information (S25).

If the incoming IMSI is not a subscriber of the service (S21), or if the requested MSISDN, today's date or current time is not registered in this service information (S22, S23, S24), the incoming call is made to the requested MSISDN. The routing command is transmitted (S26).

Even when the call forwarding to another MSISDN is performed without the call forwarding to the VMS, the call forwarding to the other MSISDN preset by the service activation information may be performed in a similar manner to the above procedure.

As described above, in the multi-phone number service according to the present invention, the intelligent call forwarding method allocates a plurality of numbers to the subscribers of the multi-phone number service and makes a call for each number at a different time or voice. By setting to switch to a mailbox, the user is set to another number or voice mailbox at the desired time zone, such as lecture time, meeting time, so that there is no effect of temporary interruptions due to incoming calls.

In addition, a preferred embodiment of the present invention is for the purpose of illustration, those skilled in the art will be able to various modifications, changes, substitutions and additions through the spirit and scope of the appended claims, such modifications and changes are the following claims It should be seen as belonging to a range.

Claims (18)

In the intelligent call forwarding method of a multi-phone number service having a primary telephone number and a plurality of secondary telephone numbers, A call processing step of routing a call by requesting routing information for the subscriber when an incoming call request is made to a subscriber registered in the multi-telephone number service; A comparison step of determining whether to transfer a call by comparing the information stored in the corresponding service logic with the information received in the call processing step; And Intelligent forwarding method in the multi-phone number service, characterized in that it comprises a call transfer step of selectively connecting the call to the corresponding destination according to the result of the comparison step. The method of claim 1, In the comparing step, The service logic designates an auxiliary telephone number to be transferred from among the plurality of auxiliary telephone numbers, and stores a destination telephone number and a date and time range for transferring the designated auxiliary telephone number. Intelligent call forwarding method in number service. The method of claim 1, The service logic designates an auxiliary telephone number to be transferred from the plurality of auxiliary telephone numbers, and stores a voicemail number for the designated auxiliary telephone number and a date and time range to be transferred. Intelligent call forwarding in service. The method according to any one of claims 2 and 3, Intelligent forwarding method in the multi-phone number service, characterized in that for storing the service logic using the subscriber terminal. The method according to any one of claims 2 and 3, The service logic is an intelligent call forwarding method in a multi-phone number service, characterized in that for storing using the wired Internet (WEB). The method according to any one of claims 2 and 3, The service logic is an intelligent call forwarding method in a multi-phone number service, characterized in that for storing using the wireless Internet (WAP). The method of claim 3, wherein In the transfer step, And the destination is one of the plurality of auxiliary telephone numbers. The method of claim 1, In the transfer step, The destination is an intelligent call forwarding method in a multi-phone number service, characterized in that the voice mailbox number. The method of claim 1, The call processing step, A request step of requesting routing information for the subscriber when an incoming call is requested to the subscriber's main telephone number; And And routing a call to a service exchange in which the subscriber is located. The method of claim 9, In the request step, The method for requesting routing information is an intelligent forwarding method in a multi-phone number service, characterized by using a MAP protocol. The method of claim 9, In the routing step, The method of routing a call is an intelligent forwarding method in a multi-phone number service, characterized in that it uses an ISDN (ISDN User Part) protocol. The method of claim 9, The requesting step, A first step of requesting subscriber information and location information from a home location register (HLR) in which a called request terminal is registered; The second step of the HLR requesting the subscriber's Mobile Station Roaming Number (MSRN) from the exchange where the subscriber is located; And wherein the switch in which the subscriber is located comprises a requesting third step of transmitting the MSRN to the HLR. The method of claim 9, The requesting step, Intelligent forwarding method in a multi-phone number service, characterized in that using the MAP protocol. The method of claim 9, The routing step, A routing first step of requesting an incoming call routing to an exchange where a subscriber is located; And And a routing second step in which the exchange makes a call control request. The method of claim 14, The routing first step uses the ISUP protocol, and the routing second step uses the MAP protocol. The method of claim 1, The comparing step, A first judging step of judging whether the incoming primary telephone number is a service subscriber; A second determination step of determining whether the incoming called auxiliary telephone number is stored in the service logic; A third determination step of determining whether the incoming call request date is stored in the service logic; And And a fourth determination step of determining whether the incoming call request time is stored in service logic. The method of claim 16, If any one of the determination step is not satisfied, intelligent call forwarding method in the multi-phone number service, characterized in that the incoming routing to the requested secondary telephone number. The method of claim 1, And a forwarding routing step of selectively routing the incoming call to the requested secondary phone number according to the result of the comparing step.

Images