KR20030042719A - Method for blocking reception of call in a mobile communication system - Google Patents

Abstract

PURPOSE: A method for limiting termination in a mobile communication system is provided to protect a subscriber by limiting the connection with an origination subscriber who the subscriber does not want to receive. CONSTITUTION: An MSC(Mobile Switching Center) receives a call request from an MS(Mobile Station) of each subscriber(210). The MSC transmits a location request to an HLR(Home Location Register)(220). The HLR receives the location request from the MSC(230). The HLR retrieves information of a termination subscriber(240). The HLR retrieves whether an origination subscriber's number is registered in a subscriber termination limit list(250). If the origination subscriber's number is registered in the subscriber termination limit list, the HLR does not provide information requested from the MSC(260). The MSC transmits a certain guidance message or a termination number connection limit guidance broadcasting to an origination subscriber(280).

Description

Call limiting method in mobile communication system {METHOD FOR BLOCKING RECEPTION OF CALL IN A MOBILE COMMUNICATION SYSTEM}

The present invention relates to a mobile communication system, and more particularly, to a method of call termination in a mobile communication system.

In general, in the mobile communication system, each subscriber tracks the number so as to display the calling number when receiving a call from an unwanted subscriber or to notify the administration by tracking the malicious call. Accordingly, in the past, the subscriber was protected by a legal procedure through administrative procedures against calls from unwanted subscribers, but the subscriber was not protected while the administrative procedure was performed.

Accordingly, an object of the present invention is that a subscriber who wants to be protected from an undesired incoming call in a mobile communication system registers on a subscriber call restriction number list and prevents the subscriber from connecting when a call connection request from the same subscriber is requested. In providing a method.

In order to achieve the above object, the present invention relates to a method of restricting a call in a mobile communication system, the method comprising: registering a specific caller number on a subscriber's call restriction list to a home location register, and attempting to connect a call from any subscriber, Retrieving whether the subscriber's number is a registered number on the do not disturb list and limiting the call connection if the subscriber's number is registered on the do not disturb list.

1 is a block diagram of the main components of a mobile communication system according to the present invention;

2 is a control flowchart for explaining a process of registering a restriction number on a subscriber's incoming restriction list at an exchange station and a home location register of a mobile communication system according to the present invention;

3 is a block diagram of a mobile communication system for explaining a process of registering a restriction number on a subscriber's incoming restriction list in an inter-subscriber switching center and a home location register according to the present invention;

FIG. 4 is a control flowchart illustrating a process of call termination at an exchange station and a home location register when a call-restricting subscriber attempts to connect to a specific subscriber according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In addition, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention will be omitted.

According to the present invention, when a mobile communication system registers a number that a subscriber does not want to receive on a subscriber blacklist screen group, a call is restricted when an incoming call is attempted from a subscriber in the subscriber limited call list. According to the present invention, when the called subscriber is busy, the calling subscriber can be registered in the subscriber restriction list.

1 shows a block diagram of the main components of a mobile communication system according to the present invention.

Referring to Fig. 1, a mobile communication system consists of a mobile station (MS 10), a base station (BS 20), an exchange station (MSC 30), and a home location register (HLR 40). The mobile station 10 is a mobile communication terminal that allows a subscriber to communicate using a mobile communication network. Base station 20 includes a base station controller (BSC 24) and a base station transceiver (BTS 22). The base station controller 24 is a device for managing mobile communication resources including the base station transceiver 22 and provides a control function and a physical link between the switching center 30 and the base station transceiver 22. The base station transceiver 22 is composed of a transceiver and an antenna to process the radio interface with the mobile station 10.

Switching station 30 has a function of connecting to the switchboard of the public telephone network together with a central control function to handle calls and calls from each base station and to allow all base stations to operate efficiently. The home location register 40 is a DB (Data Base) for storing subscriber information and is connected to the switching center 30. When the subscriber attempts to make a call, the home location register 40 serves to provide information such as whether the subscriber is a valid subscriber, what service he is using, or where he is currently located. The home location register 40 also includes a buffer 42 capable of storing each number on a subscriber blacklist screen group in accordance with the present invention. That is, the home location register 40 includes a subscriber call restriction list 42. This subscriber do not disturb list is a list of registered subscriber numbers that the subscriber who does not want to receive. Therefore, the subscriber of the number registered in the subscriber's call restriction list cannot send to the subscriber of the call restriction list. The home location register 40 adds a separate feature code (FC) for performing the operation according to the present invention.

2 is a control flowchart illustrating a process of registering a restriction number on a subscriber's incoming restriction list at an exchange station and a home location register of a mobile communication system according to the present invention.

1 and 2, subscriber A 10 sends a * FC + called restriction number set in accordance with the present invention to register on the subscriber called restriction list an originating number that it does not want to receive. The switching center 30 receives the * FC + called restriction number from the subscriber via the base station 20 in step 110. The switching center 30 then transmits the FEATREQ (Feature Request) to the home location register 40 by including the * FC + called restriction number in the digit (dialed) parameter in step 112. Home location register 40 receives FEATREQ from exchange 30 in step 114. The home location register 40 retrieves the service information of the subscriber A related to FEATREQ in step 118. The home location register 40 then retrieves at step 120 whether the subscriber has registered a call forwarding service according to the present invention. If the subscriber has registered the call forwarding service, the home location register 40 proceeds to step 122 and registers the call forwarding number received on the subscriber's black list screen group. The home location register 40 then proceeds to step 124 to transmit a registration success signal to the switching center 30. On the other hand, the home location register 40 proceeds to step 126 and transmits a registration failure signal to the switching center 30 if the subscriber concerned with the FEATREQ has not registered with the incoming call restriction service. The switching center 30 transmits the registration result signal received from the home location register 40 through the base station 20 to the mobile station 10.

3 is a block diagram of a mobile communication system for explaining a process of registering a restriction number on a subscriber incoming restriction list at an inter-subscriber switching center and a home location register according to the present invention.

Referring to FIG. 3, subscriber A 10 and subscriber B 60 are talking over a mobile communication system. At this time, when the called party A 10 wants to register the calling party B, which is being called, on the subscriber black list screen group, the above-described * Feature Code (FC) is transmitted. The terminating switching center 30 connected to the called party A then transmits the FEATREQ (Feature Request) to the home location register 40 by including the * FC + called restriction number in the digit parameter. The destination switching center 30 has information of the calling party B because subscribers A and B are busy. Therefore, even if the called party A does not send the call restriction number together with the FC, the destination switching center 30 can provide the call restriction number to the home location register 40. Thereafter, the home location register 40 performs a process of registering the restriction number on the subscriber's incoming restriction list 42 as described above.

FIG. 4 is a control flowchart illustrating a process of call termination by the switching center and the home location register when a call-restricting subscriber attempts to connect to a specific subscriber according to the present invention.

3 and 4, the switching center 80 receives a call request from the mobile station 60 of each subscriber. Upon receiving this call connection request, the switching center 80 connects to the home location register 40 from the called subscriber number provided by each subscriber. The switching center 80 then transmits to the home location register 60 a LOCREQ (Location Request) requesting information such as whether the called party is a valid subscriber, what service is being used or where it is located at step 220. do. Home location register 40 receives the LOCREQ from switching center 80 at step 230. At this time, the home location register 40 retrieves the information of the called party in step 240 and searches in step 250 whether the calling party number is a registered number on the subscriber called restriction list 42. The home location register 40 includes a call forwarding list 42, as described above, which is a list of subscriber numbers that subscribers receiving call forwarding services do not want to receive. Therefore, the subscriber of the number registered in the subscriber's call restriction list cannot send to the subscriber of the call restriction list.

If the calling party's number is not a registered number on the subscriber's incoming restriction list 42, the home location register 40 proceeds to step 270 to perform the operation. However, the home location register 40 does not provide the requested information from the exchange 80 if the calling party's number is a number registered on the subscriber's incoming restriction list 42 and proceeds to step 260. In other words, the home location register 40 sends a LOCREQ RETURN FAIL to the switching center 80. Accordingly, the switching center 80 may transmit a predetermined announcement message or "caller connection restriction" announcement broadcast to the calling subscriber in step 280.

According to the present invention, the subscriber can be protected by limiting the connection with the originating subscriber who does not want to receive in the mobile communication system.

Claims (1)

In the method of limiting the incoming call in the mobile communication system, Registering a specific calling number in the home location register on the subscriber restriction list; When attempting to connect a call from any subscriber, searching whether the subscriber's number is a registered number on the call forwarding list; Limiting the call connection if the subscriber's number is registered on the call restriction list.