KR100645111B1 - Method for blocking reception of call, and a mobile communication system using the same - Google Patents

Abstract

A call-reception limiting method and a mobile communication system for performing the same are provided to allow a user to normally perform call origination and termination according to his/her situation and selectively limit call-reception to a virtual number. The phone number of a mobile terminal is set in a call-reception limiting state according to a call-reception limiting request of a subscriber of a mobile communication service. A destination terminal waits for receiving a call connection request from an arbitrary mobile terminal. When a call connection request is received, it is checked whether a destination phone number of the received call connection request is in a call-reception limiting state. If the destination phone number of the received call connection request is not in the call-reception limiting state, a call is established between an origination terminal and the destination terminal. If the destination number of the received call connection request is in the call-reception limiting state, the call is not transferred to the destination terminal while an announcement sound or a comment indicating that a call connection is being made is provided to the origination terminal.

Description

Method of call forwarding and mobile communication system performing the same {METHOD FOR BLOCKING RECEPTION OF CALL, AND A MOBILE COMMUNICATION SYSTEM USING THE SAME}

1 is an overall configuration diagram of a mobile communication system to which the present invention is applied.

Fig. 2 is a functional block diagram showing the configuration of the call reception server according to the present invention.

3 is a flowchart showing a call restriction registration process in the present invention.

4 is a flowchart showing a call reception method according to the present invention.

5 is a signal processing diagram illustrating a call processing process of a mobile communication system to which the present invention is applied.

Explanation of symbols on the main parts of the drawings

11: mobile communication terminal (MN) 12: base station

13: base station controller 14: switchboard

15: home location register 16: intelligent network switch

17: service controller 18: call restriction server

The present invention relates to a mobile communication system that provides a voice call service between mobile communication terminals, and more particularly, a call limiting method that can naturally induce a call restriction so that a caller does not recognize a caller's intention according to a caller's intention; It relates to a mobile communication system using the same.

The mobile communication system is basically for providing a voice call service between mobile nodes. The mobile communication system is composed of an exchange, a home location register, an authentication center, a message center, and a network interlocking device. Switching network part that performs routing function to called mobile terminal, wireless network part that performs base station, base station controller and mobile terminal, and performs handoff and wireless support management in wireless network, network management center, customer It consists of the operation support unit which supports the maintenance and operation of the mobile communication system, including the management and billing devices.

In such a mobile communication system, when a predetermined mobile terminal issues a call connection request, the call exchange request is received by a calling party exchange located near the base station and the base station controller, and the called number included in the received call connection request. Confirms the location of the called-party mobile terminal from the home location register, transmits the call request to the called-side exchange close to the called-party mobile terminal, and the called-side exchange sends the call signal to the called-party mobile terminal, By exchanging signals between the calling exchange and the called exchange, the calling signal, the busy signal, or the announcement (for example, depending on the state of the called mobile terminal (standby state, busy or power off)) "The connection is not possible because the power is off".

That is, the call method in the mobile communication terminal starts the call connection according to the caller's will, and the called party was simply a caller-oriented communication method that can accept or reject the caller's call connection request.

Therefore, when the called party does not want to answer the call, the call signal generated by the mobile terminal is ignored and the connection button is not pressed, or the power of the terminal is turned off or the end button is pressed. In this case, the former is inconvenient because the call signal (ring tone or vibration) is continuously generated until the caller terminates the call connection request (that is, until the end button is pressed). If you press, a message, such as "Your phone is off" or "You cannot answer a call," is sent from the mobile communication system to the calling terminal, so the caller knows the intention of the called party rejecting the call. There is a problem.

In other words, as the use of mobile terminals has become more common, the inconvenience of having to answer a phone call anytime and anywhere is increasing, as opposed to the convenience of making a call anywhere.

Accordingly, there is a demand for a new service that rejects an incoming call according to a surrounding situation or a user's condition while using the convenience of a mobile terminal that can make a call from anywhere.

The present invention has been proposed in order to solve the above-described needs, and its object is to reject incoming calls according to the surrounding conditions or their own conditions, so that the caller cannot know the incoming rejection status, thereby further improving the convenience of the subscriber of the mobile communication service. It is to provide a call restriction method and a mobile communication system using the same.

As a construction means for achieving the above object, the present invention provides a method for limiting a call in a mobile communication system that provides a voice exchange service between mobile terminals of a mobile communication service subscriber, a) according to a call restriction request of a mobile communication service subscriber. Setting the number of the mobile terminal to a call restriction state; b) waiting for a call connection request to be received from any mobile terminal; c) if a call connection request is received, determining whether a called number of the received call connection request is in a call-restricted state; d) performing the basic call processing procedure for establishing a call between the calling party mobile terminal and the called party mobile terminal based on the called number, as a result of the determination that the called party number is not in a call-restricted state; And e) if the called number is in a call-restricted state as a result of the determination, a guide tone or announcement set to indicate that a call connection is made to the calling mobile terminal without transmitting a call to the called mobile terminal. It characterized by including the step of providing.

Another aspect of the present invention provides a mobile communication system for providing a voice exchange service between mobile terminals of a mobile communication service subscriber, comprising: a base station performing wireless section communication with the mobile terminal; A base station controller for controlling the base station; When the call is connected to the base station controller to perform a call exchange for a general call, and has a plurality of guide sounds for call processing, and the called number required for call connection is restricted, the base call processing is stopped and the base station controller and the base station are stopped. Switch to provide a guide sound or announcement to the mobile terminal requesting a call connection through; And a home location register that manages additional service activation state information including location of the mobile communication service subscriber and call forwarding service and provides necessary information according to the request of the exchange.

As still another aspect, the present invention provides a mobile communication system for providing a voice exchange service between mobile terminals of a mobile communication service subscriber, comprising: a base station for performing wireless section communication with the mobile terminal; A base station controller controlling the base station; A switch connected to the base station controller to perform a call exchange for a general call, to transfer an intelligent network service call to an intelligent network switch, and to provide an announcement or a connection / telephone tone set to an originating party for an incoming restricted subscriber call; A home location register which manages location and additional service activation status information of a mobile communication service subscriber and provides necessary information in response to a request of the exchange; An intelligent network switch requesting control information of a call requiring an intelligent network service from among subscribers, and performing a service using the requested information when the requested information is transmitted; A service controller for completing a service call by providing call processing information when receiving an inquiry about a service call from an intelligent network switch; Call-Delivery Service It is characterized in that it consists of a call-restriction server that manages the subscriber and the call-restriction service activation state and provides call restriction information to the home location register and the service controller.

Hereinafter, a method of limiting a call according to the present invention and a mobile communication system using the same will be described with reference to the accompanying drawings.

1 is a block diagram illustrating a mobile communication system to which the present invention is applied, and includes a mobile terminal 11 carried by a mobile communication service subscriber and used for a voice call, and a base station 12 performing wireless section communication with the mobile terminal 11. And a base station controller 13 that controls the base station 12 and the base station controller 12 to perform a call exchange for a general call, and transfer an intelligent network service call to the intelligent network switch 16. And a switch 14 that provides the announcement or connection / call tone set to the calling mobile terminal 11 in response to a call connection request of the incoming restricted subscriber, and manages the location and additional service activation status information of the mobile communication service subscriber. The home location register 15 provides the necessary information according to the request of the switch 14, and the control information for the call requiring the intelligent network service among the subscriber's calls is provided. Requests to the network controller 17, and if the requested information is delivered, the intelligent network switch 16 performs a service using the same, and when the smart network switch 16 receives a query for the service call, it provides call processing information. A service controller 17 which completes the call management service, and a call reception server 18 which manages the call reception service subscriber and the call reception service activation state and provides call reception information to the home location register 15 and the service controller 17. Is made of.

The exchange 14 performs a call exchange so that the call transferred from the calling mobile terminal is delivered to the called party mobile terminal as a destination, and is generally provided to the mobile terminal 11 such as a ringing tone, a busy signal, and a announcement. In order to prevent the caller from notifying the call reception fact, the present invention may use the above-described sound sources, and may further include a separate sound source required for the call reception service.

In addition, the exchange 14 of the mobile communication system according to the present invention does not transmit a call to the destination side exchange terminal when the incoming call is restricted from the destination mobile terminal with respect to the corresponding call. It delivers a busy signal or announcement that it is in an unreceivable area. Accordingly, the incoming call is not transmitted to the called party's mobile terminal, so that a ringing tone or vibration sound indicating that a call is received does not occur, and the calling party's mobile terminal 11 appears to be trying to make a connection. According to the above, the subscriber who does not want to answer the call can reject the incoming call while making the necessary call according to his / her will, and the caller who called the subscriber registered in the call forwarding service of the present invention calls the caller. Instead of being denied, you simply recognize that you are not answering the call.

At this time, the call restriction information is managed through the call restriction server 18 so that the switch 14 or the intelligent network switch 16 transmits the called party's information to the home location register 15 or the service controller 17 for call processing. If requested, it is provided to the exchange 14 via the home location register 15 or service controller 17.

In addition, in the case of an intelligent network service call, the corresponding call is transferred from the exchange 14 to the intelligent network exchange 16, and the call processing is performed at the intelligent network exchange 16 side, where the intelligent network exchange 16 is transferred from the service controller 17. It operates by receiving necessary information. For example, when a plurality of mobile station numbers are set in one mobile terminal and a service capable of originating and receiving each of the plurality of mobile station numbers (aka, two-numbered service), the call processing is performed by the intelligent network switch (16). The service controller 17 manages the registration information of the two-number service and the information of the subscriber to provide the necessary information to the intelligent network switch 16. In general, the two-number service has a MIN actually set in the mobile terminal, and in addition to this, sets one or more virtual numbers.

2, the incoming call restriction server 18 includes: a blocking setting unit 21 for receiving a call restriction request of a mobile communication service subscriber and registering the mobile communication service subscriber information in the blocking information DB 24; A search unit 22 for searching whether a call restriction is set for a called party of the call according to a query from the home location register 15 or the service controller 17 of the intelligent network, and the search unit 22 And a result information transmission unit 23 for transmitting the result to the home location register 15 or the service controller 17, and a blocking information DB 24 for managing the call restriction activation state of the mobile communication service subscriber.

Although FIG. 1 illustrates a mobile communication system having a separate call restriction server 18 for a call restriction service, as described above, an existing home location register 15 is not provided separately. Alternatively, the service controller 17 may have a function of the call restriction server 18 to store call restriction information and provide related information according to a query.

At this time, the home location register 15 and the service controller 17, as shown in FIG. 2, the functions necessary to perform the call restriction service, that is, the blocking setting unit 21, the search unit 22, The blocking information DB 24 is further included.

Hereinafter, in the mobile communication system described above with reference to FIGS. 3 to 5, a call reception process according to the present invention will be described.

3 is a flow chart illustrating a call reception service registration process in the method of call reception according to the present invention, and waits for a call reception service request to be received from a mobile communication service subscriber (S305). When the incoming call restriction service request is received in the above state, the subscriber registers a number to receive the service, that is, a number to limit incoming call (S310). Subsequently, detailed information necessary for the call forwarding service is set (S315). Registration is completed by storing the incoming call restriction target number and detailed information set by the above in the blocking information DB 24 (S320).

In step S310, when the mobile communication service subscriber is not using the two-number service, the registered number becomes the number (NIM) of the mobile terminal 11 possessed by the mobile communication service subscriber, and the call restriction service. When the subscriber requesting the mobile communication service is subscribed to the two-number service, the virtual number among the registered numbers may be set for call restriction.

Next, in the step (S315), to set the incoming call restriction period, the guidance sound or the announcement to be sent to the caller during the incoming call restriction period as the incoming call restriction details, in addition, to further set the call forwarding number to be subject to the call restriction By doing so, it is possible to provide a selective call restriction service.

In the above, the guidance sound or announcement to be delivered to the calling party may be provided by the mobile communication provider at random, and may be selected by the mobile communication service subscriber who requested the call restriction through the step (S315). In this case, it is preferable that the guide tone or the announcement to be delivered to the calling party is generally set to a call connection tone provided to the caller or a busy signal when the call is delivered to the called party, thereby preventing the calling party from knowing the incoming rejection status. .

4 is a flowchart illustrating a call reception method according to the present invention, and FIG. 5 illustrates a call processing procedure in a mobile communication system to which a call reception method according to the present invention is applied, with reference to FIGS. 4 and 5. The incoming call restriction method according to the present invention will be described.

Switch 14 of the mobile communication system according to the present invention is provided with a guide sound or announcement for delivery to the calling party when performing the call restriction service (S405). In this case, as described above, during the normal call processing, the guide sound may use a call connection sound or a busy signal as it is transmitted to the calling mobile terminal.

In the above state, when a call connection request to the other mobile terminal is received from the predetermined mobile terminal 11 (S410), it is checked whether the called party is requested to set the call restriction state (S415). More specifically, the call connection request (origination) is transmitted from the mobile terminal 11 to the base station controller 13 through the base station 12, and the base station controller 13 informs that the call connection request has been received. The response signal BS_Ack_order is transmitted to the corresponding mobile terminal 11. Subsequently, the base station controller 13 exchanges messages with the switch 14 (CM_SVC_REQ to CALL_PROC), and requests the switch 14 to perform a call exchange. By this, the exchange 14 first checks whether or not the called number is a virtual number registered in the two-number service, and if it is a virtual number, transmits a call attempt request (IAM) to the intelligent network switch 16, and the virtual number is If not, the routing information request signal (LOCREQ) for the called party number is transmitted to the home location register 15 for the call transfer to the called party mobile terminal. Accordingly, the home location register 15 determines whether the called number is a call restriction setting state before confirming the current position of the called number. At this time, the determination of the incoming call restriction setting state may be made in the home location register 15 itself, or may be made by receiving a response from the call restriction server 18 by a query.

In addition, when the called number is a virtual number, a series of processing is performed at the intelligent network switch 16, not the switch 14, and when the intelligent network switch 16 receives a call attempt request (IAM), the service controller Request the actual number to (17) (ANAL_INFO). Before the service controller 17 searches for the actual mobile station number (NIM) connected to the corresponding virtual number according to the request, the service controller 17 checks whether the incoming restriction is set on the virtual number through a query to the incoming restriction server 17. do.

As a result of the check, if the call restriction is not set in the corresponding call number (S420), a normal call processing procedure is performed (S425). The call processing procedure at this time is the same as a general basic call processing procedure, and thus a detailed description thereof will be omitted.

On the contrary, if the call restriction is set in the called number (S420), a channel is allocated between the calling mobile terminal and the calling exchange (S430), and the call is sent to the calling mobile terminal through the assigned channel. Send a guide sound or announcement when the incoming call restriction (S435).

That is, when the home location register 15 checks the incoming call restriction state, when it is set as the incoming call restriction, the home location register 15 notifies that the incoming call is restricted to the exchange 14 through a response message (locreq), and provides a guide code related to call processing. to provide. In addition, the service controller 17 notifies the incoming call restriction fact through the incoming-to-number response signal ANA_Ack sent to the intelligent network switch 16 when the called number is set to the incoming call restriction. Accordingly, the service controller 17 transmits a guide code related to call processing to the exchange 14 (ACM).

At this time, the switch 14 performs a traffic channel allocation process between the base station controller 13 and the base station 12 with the calling mobile terminal 11 (ASSIGN_REQ to ASSIGN_COMP). In addition, as described above, the exchange 14 receiving the guide code related to the call processing for the call restriction from the home location register 15 or the intelligent network switch 16 is set to the calling mobile terminal 11 through the assigned channel. Send out a guide sound or announcement. The guide sound or announcement is a general call connection tone, a busy signal or a user-designated announcement. At this time, a call to the called party's mobile terminal is not set.

Therefore, the calling mobile terminal receives a guide tone (for example, a ring back tone) as in normal call processing, and thus cannot know that the called party has rejected the incoming call.

And since the call is not set up with the called party's mobile terminal, the caller's mobile terminal continues to hear only the ring back tone, and if the caller waits for a while and then hangs up the phone (S440), the transmission of the guide sound is stopped (S445). That is, when the caller presses the end button, a disconnection procedure REL_order to REL_COMP is performed between the calling mobile terminal 11 and the exchange 14.

As described above, the subscriber of the mobile communication service can restrict the call without notifying the calling party of the intention, and in particular, in the case of the two-number service, the call restriction can be set according to the number. The number can normally restrict both incoming and outgoing calls to the virtual number while performing both origination and incoming calls, and can provide more convenience to mobile subscribers by not letting the caller know the incoming call restriction status. .

Claims (15)

Claims [1] A method for limiting a call in a mobile communication system that provides a voice exchange service between mobile terminals of a mobile communication service subscriber, a) setting a number of the corresponding mobile terminal to the call restriction state according to the call restriction request of the mobile communication service subscriber; b) waiting for a call connection request to be received from any mobile terminal; c) if a call connection request is received, determining whether a called number of the received call connection request is in a call-restricted state; d) performing a basic call processing procedure for setting up a call between a calling party mobile terminal and a called mobile terminal based on the called number if the called number is not in the call restriction state as a result of the determination; And e) if the called number is in the call-restricted state as a result of the determination, it provides a guide tone or announcement set to indicate that the call is connected to the calling mobile terminal without transmitting the call to the called mobile terminal. Call reception restriction method of a mobile communication system comprising the step of. The method of claim 1, wherein step a) And setting the mobile terminal number of the mobile communication service subscriber who has requested the call restriction in the home location register of the mobile communication system to the call restriction state. The method of claim 1, wherein step a) Setting the mobile terminal number of the mobile communication service subscriber who has requested the call restriction to the service controller for providing call processing information of the intelligent network service in the mobile communication system to a call restriction state; . The method of claim 1, wherein step a) And setting the mobile terminal number of the mobile communication service subscriber who has requested the call restriction to a call restriction state to a call restriction server that performs registration and management of call restriction service information. The method of claim 1, The guide sound transmitted to the caller is a call-restricting method of the mobile communication system, characterized in that it is set to one of a call connection sound, a busy signal provided during normal call connection. The method of claim 1, wherein step e) Allocating a traffic channel between the calling mobile station and the calling mobile terminal requesting a call connection; And And transmitting, by the exchange, a guide tone or announcement set to the mobile terminal until a release signal is transmitted from the corresponding mobile terminal through the assigned channel. The method according to any one of claims 1 to 4, wherein step a) When the call restriction state of the mobile communication service subscriber is set, the call restriction method of the mobile communication system, further comprising setting a guide tone or a announcement to be transmitted to the caller during the call restriction period and the call restriction period. The method of claim 3 or 4, wherein step a) Confirming whether the mobile communication service subscriber who has requested the call restriction is a two-number service subject to which two or more telephone numbers are set in one mobile terminal; And And if it is determined that the number is a two-number service target, setting the virtual number of the telephone number set in the mobile terminal of the mobile communication service subscriber to a call-restricted state. The method of claim 2, wherein step c) An exchange receiving the call connection request of the predetermined mobile terminal, extracting a called number from the received call connection request signal, and requesting information on the extracted called number to a home location register; And And the home location register checks whether the called number is in the incoming call restriction state and responds to the exchange. The method of claim 4, wherein step c) An exchange receiving the call connection request of the predetermined mobile terminal, extracting a called number from the received call connection request signal, and requesting information on the extracted called number to a home location register; And And the home location register inquires whether the called number is in a call-restricted state and forwards the response to the switch. The method of claim 8, wherein step c) The exchange receiving the call connection request for the virtual number of the intelligent network service of the predetermined mobile terminal, forwarding the call connection request to the intelligent network switch; The intelligent network switch requesting call processing information for the virtual number from a service controller; And And the service controller responding to the intelligent network switch by checking whether the virtual number is set to a call-inbound state. The method of claim 8, wherein step c) The exchange receiving the call connection request for the virtual number of the intelligent network service of the predetermined mobile terminal, forwarding the service call to the intelligent network switch; Requesting, by the intelligent network exchange, call processing information for a virtual number from a service controller; And And the service controller inquiring whether the virtual number is set to the call restriction state and transmitting the response to the intelligent network switch. A mobile communication system providing a voice exchange service between a mobile terminal of a mobile communication service subscriber, A base station performing wireless section communication with the mobile terminal; A base station controller controlling the base station; When the call is connected to the base station controller to perform a call exchange for a general call, and has a plurality of guide sounds for call processing, and the called number required for call connection is restricted, the base call processing is stopped and the base station controller and the base station are stopped. A switch providing a ring back tone or a busy signal to a mobile terminal requesting a call connection; And And a home location register that manages supplementary service activation status information including location and call forwarding services of a mobile communication service subscriber and provides necessary information in response to a request of the exchange. The method of claim 13, Receives a request for access to a virtual number from among a subscriber's call from the exchange, requests control information necessary for call processing to the service controller, and performs a service by using the requested information, and the corresponding virtual number is called. An intelligent network switch which notifies the exchange to the exchange when it is set to; And It is provided with information for an intelligent network service including a real number corresponding to a plurality of virtual numbers and a call restriction state, and checks the real number and the call restriction state of the corresponding virtual number by a query from the intelligent network switch and provides the information to the intelligent network switch. The mobile communication system further comprises a service controller. A mobile communication system providing a voice exchange service between a mobile terminal of a mobile communication service subscriber, A base station performing wireless section communication with the mobile terminal; A base station controller controlling the base station; A switch connected to the base station controller to perform a call exchange for a general call, to transfer an intelligent network service call to an intelligent network exchange, and to provide a announcement or a guide tone set to an originating party for an incoming restricted subscriber call; A home location register which manages location and additional service activation status information of a mobile communication service subscriber and provides necessary information in response to a request of the exchange; An intelligent network switch requesting control information of a call requiring an intelligent network service from among a subscriber's call, and performing service using the requested information; A service controller for completing a service call by providing call processing information when receiving an inquiry about a service call from an intelligent network switch; A call communication server, comprising: a call restriction server that manages a call reception service subscriber and a call reception service activation state and provides call reception information to the home location register and a service controller.

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