KR101025997B1 - System and method for providing call origination information of restricted call termination - Google Patents

Abstract

The present invention relates to a system and method for providing outgoing information on an incoming call to an overseas roaming subscriber, and provides outgoing information on an incoming call using a call forwarding process defined by a communication standard. According to the present invention, an outgoing information providing system for providing outgoing information on an incoming call to an overseas roaming subscriber receives an outgoing call sent from a domestic mobile terminal to an overseas roaming mobile terminal and processes the incoming call with an overseas exchange. Requesting a domestic exchange; A home location register which receives a request for routing information for call forwarding processing from the foreign exchange in response to an outgoing call of the outgoing call and requests provision of outgoing information for the incoming call based on the routing information request; And an origination information providing server configured to create an origination information message including origination information for the incoming call according to the origination information provision request of the home location register and transmit the origination information message to the overseas roaming mobile terminal.

Roaming, Call Forwarding, Call Forwarding, Catch Call, Call Keeper, Incomplete Call, Call Forwarding, Calling Information

Description

SYSTEM AND METHOD FOR PROVIDING CALL ORIGINATION INFORMATION OF RESTRICTED CALL TERMINATION}

The present invention relates to an outgoing call information providing service among communication services, and more particularly, to an outgoing call information providing service for an incoming call that provides information on an outgoing call that the incoming call has failed to a called subscriber.

When the called terminal does not receive an incoming call because the power of the called terminal is currently turned off or in a call, a service for providing outgoing call information of the unreachable call is provided to the called terminal when the called terminal becomes available. For example, KTF's catch call and SKT's callkeeper service. The called party can check which call was received in the state that the call is unavailable based on the outgoing call information provided by the called terminal, and, if necessary, can make a direct call based on the outgoing call information. On the other hand, by providing the call information of the incoming call to the called terminal can reduce the hassle of the caller unnecessarily attempt to re-call.

On the other hand, with the development of mobile communication technology, mobile communication subscribers can be provided with mobile communication services in overseas as well as in Korea by agreement and system interworking between mobile communication providers when visiting overseas. This service is called an overseas roaming service. However, when using the overseas roaming service, the mobile communication subscriber cannot use the outgoing information providing service for the incoming call, as in Korea. The outgoing call information service for the incoming call is not defined in the mobile communication standard standard. It uses the parameters and call processing procedures defined by each mobile service provider, and is almost the only service provided by the domestic mobile service provider. Because.

The present invention has been made to improve the above problems, a system for providing outgoing information on incoming calls to overseas roaming subscribers using a call forwarding service defined in the mobile communication standard standard and The purpose is to provide a method.

Other objects and advantages of the invention will be described below and will be appreciated by the practice of the invention. Further, objects and advantages of the present invention can be realized by the means and the combination shown in the appended claims.

In accordance with an aspect of the present invention for achieving the above object, an outgoing information providing system for providing outgoing information on an incoming call to an overseas roaming subscriber, receives an outgoing call sent from a domestic mobile terminal to an overseas roaming mobile terminal A domestic exchange requesting an incoming exchange of the outgoing call to an overseas exchange; A home location register which receives a request for routing information for call forwarding processing from the foreign exchange in response to an outgoing call of the outgoing call and requests provision of outgoing information for the incoming call based on the routing information request; And an origination information providing server configured to create an origination information message including origination information for the incoming call according to the origination information provision request of the home location register and transmit the origination information message to the overseas roaming mobile terminal.

In addition, according to another aspect of the present invention for achieving the above object, a method for providing outgoing information on an incoming call to a foreign roaming subscriber in a communication system, receiving an outgoing call sent from a domestic mobile terminal to an overseas roaming mobile terminal; Requesting an incoming exchange of the outgoing call to a foreign exchange; Receiving a request for routing information for call forwarding processing from the foreign exchange in response to a failure of the incoming call; And creating an outgoing information message including outgoing information on the incoming call based on the routing information request for the forwarding process and transmitting the outgoing information message to the overseas roaming mobile terminal.

The present invention as described above, by using the call forwarding service defined in the communication standard specification can provide outgoing information service for the incoming call to the overseas roaming subscriber without system change or parameter change. As a result, overseas roaming subscribers do not miss important calls made in Korea from abroad.

The foregoing and other objects, features and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings, in which: There will be. In addition, in describing the present invention, when it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram showing the configuration of a system for providing outgoing information on an incoming call to an overseas roaming subscriber according to an embodiment of the present invention.

Referring to FIG. 1, the system according to the present embodiment includes a mobile terminal 110 and 170, a mobile switching center (MSC) 120 and 160, and a home location register (HLR) 130. A gateway location register (GLR) 140, a source information providing server 180, and a short messaging service center (SMSC) 190.

The mobile terminals 110 and 170 are communication terminals having voice calls, video calls, text message transmission and reception, and global roaming functions. In this embodiment, the mobile terminal 110 is a communication terminal of a subscriber located in the country, and the mobile terminal 170 is a communication terminal of a subscriber roaming abroad in the country.

The exchangers (MSCs) 120 and 160 are responsible for mobility management, location registration / management, authentication, handover, and roaming of the mobile terminals 110 and 170, and also move in each base station through a VLR (Visitor Location Register). It updates and stores the location registration information of the terminals, and transmits the changed location registration information of the mobile terminals to a home location register (HLR) 130 that manages the location registration information of the mobile terminal (the home location register of the overseas network is omitted in the drawing). The location information of the mobile terminals 110 and 170 is periodically updated. In the present embodiment, the exchanger 120 plays a role as a domestic exchange, and the exchanger 160 plays a role as an overseas exchange.

Although not shown, the mobile terminals 110 and 170 and the exchangers 120 and 160 are connected through a wireless access network. The wireless access network includes a base station for transmitting and receiving voice / video calls and packet data and the like through a wireless link with the mobile terminals 110 and 170, and a base station controller for managing the base station and processing wireless channel allocation.

The home location register 130 manages profiles of mobile subscribers, including current location information of the mobile terminals 110 and 170. In the present invention, the home location register 130 stores the location information of the overseas roaming mobile terminal 170 when the location registration request from the overseas roaming mobile terminal 170 comes up through the gateway location register 140, and stores the subscriber profile. It descends to the gateway location register 140.

In addition, the home location register 130 transmits a routing information request message (Send Routing Info) including information on the non-receiving state of the overseas roaming mobile terminal 170, that is, a call forwarding reason. Received from), and transmits the caller information and the called party information to the caller information providing server 180 and requests the transmission of the caller information message for the incoming call. The home location register 130 performs a general call forwarding procedure when a routing information request message including a forwarding reason is received from a domestic destination exchange, while routing information including a forwarding reason from the gateway location register 140 is performed. When the request message is received, the call forwarding procedure is performed as well as the general call forwarding procedure.

The gateway location register 140 serves as a gateway for the location registration process of the mobile terminal 170 roaming abroad in Korea, and when a location registration request is received from the overseas roaming mobile terminal 170, the overseas roaming mobile terminal Request a location registration to the home location register 130 that accommodates 170, downloads the subscriber profile from the home location register 130 and sends it down to the exchange 160 on the roaming mobile terminal 170 abroad.

At this time, when the gateway location register 140 transmits the subscriber profile to the exchange 160 of the overseas roaming mobile terminal 170, the subscriber profile includes a parameter related to an outgoing call information providing service for an unreachable call. In place of this, the call forwarding parameter is inserted and transmitted.

In addition, the gateway location register 140 relays the exchange of routing information in the call between the domestic mobile terminal 110 and the overseas roaming mobile terminal 170. That is, when the domestic mobile terminal 110 sends a call to the overseas roaming mobile terminal 170, the gateway location register (! 40) receives the incoming location information query message from the home location register 130 and accordingly the roaming abroad The mobile station 170 transmits the called location information query message to the switch 160 of the mobile terminal 170, receives a response thereto, and returns to the home location register 130 again.

In addition, the gateway location register 140 receives a routing information request message including a reason for call forwarding from the foreign exchange 160 according to the inability to receive an overseas roaming mobile terminal 170, and receives the received routing information request message. Transmit to domestic home location register 130.

The origination information providing server 180 composes an origination information message to be provided to the called party by using the information of the outgoing call that the incoming call fails at the request of the home location register 130, and transmits the created outgoing information message to the called terminal. In the present invention, the originating information providing server 180, based on the request of the home location register 130, the overseas roaming mobile terminal 170 by using the information of the outgoing call that the incoming call failed to the overseas roaming mobile terminal 170. Creates an outgoing information message to be provided to and transmits through the short message center 190.

Hereinafter, with reference to FIGS. 2 to 3 will be described in more detail.

2 is a flowchart illustrating a location registration procedure of an overseas roaming mobile terminal according to an embodiment of the present invention.

Referring to FIG. 2, when a location registration requirement such as power-on occurs, the mobile terminal 170 roaming abroad in the country transmits a location registration request message (Update Location) to the switch 160 through a wireless access network (S201). In response to the location registration request, the exchanger 160 transmits a location registration request message (Update Location) to the gateway location register 140 in Korea (S203).

Upon receiving the location registration request message from the foreign exchange 160, the gateway location register 140 transmits a location registration request message (Update Location) to the home location register 130 that accommodates the overseas roaming mobile terminal 170 ( S205).

Then, the home location register 130 updates the location information of the overseas roaming mobile terminal 170, inquires the profile of the roaming subscriber, and loads it in an Insert Subscriber Data (ISD) message to the gateway location register 140. (S207).

When receiving the ISD message including the subscriber profile, the gateway location register 140, if the subscriber profile included in the ISD message includes outgoing information providing service parameter for the unreachable call, is forwarded instead. Info) is inserted (S209), and the ISD message in which the call transfer parameter is inserted is transmitted to the exchange 160 on the roaming mobile terminal 170 side (S211). Examples of call forwarding parameters are shown in Table 1 below.

parameter value Explanation ForwardingInfo



ss-code H'29 Call Forwarding Busy (CFB) H'2A Call Forwarding No Reply (CFNRY) H'2B Call Forwarding Not Reachable (CFNRC) basic service
H'11 voice H'1F video ss-status H'07 Active noReplyCondition Time No answer timer of called party, sent only for CFNRY

In this case, CFB means paging failure such as busy, CFNRY does not answer, CFNRC means shadow area, basic service means call forwarding type, ss-status indicates whether call forwarding service is activated, and noReplyCondition Time is non-response time condition. Means.

The exchange 160 of the overseas roaming mobile terminal 170 performs a procedure for call forwarding when the conditions as shown in [Table 1] are satisfied. Since the forwarding number is not included in the call forwarding parameter, the switching unit 160 of the roaming mobile terminal 170 of the overseas roaming mobile terminal 170 receives the forwarding phone number and the incoming call when the conditions shown in [Table 1] are satisfied. In order to obtain routing information for switching, a routing information request message (SRI: Send Routing Info) is transmitted. This will be described in detail with reference to FIG. 3.

3 is a flowchart illustrating a procedure for providing outgoing information on an incoming call to an overseas roaming mobile terminal according to an embodiment of the present invention.

Referring to FIG. 3, the originating terminal 110 in the country sends a call to the overseas roaming terminal 170. The call originating from the originating terminal 110 is transmitted to the originating exchange 120 (S301), and the originating exchange 120 receiving the originating call is the called terminal, i.e., the overseas roaming terminal 170, for the incoming call processing of the originating call. In step S303, a routing information request message (Send Routing Info) is transmitted to the home location register 130 that accommodates the < RTI ID = 0.0 >

Since the location information of the called terminal 170 is updated in the home location register 130 as described with reference to FIG. 2, the home location register 130 sends the incoming location information query message to the gateway location register 140. (S305), and the gateway location register 140 transmits the called location information query message (PRN) to the exchange 160 of the overseas roaming terminal 170 (S307).

The overseas roaming terminal 170, i.e., the exchange 160 of the called terminal, transmits a called location information response message (MSRN: Mobile Subscriber Roaming Number) to the gateway location register 140 (S309), and the gateway location register ( 140 transmits the called location information response message MSRN to the home location register 130 (S311).

The home location register 130 that has received the called location information response message MSRN transmits a routing information response message to the calling exchange 120 (S313), and the calling exchange 120 receives the routing information response message. On the basis of the call connection to the switch 160 on the overseas roaming mobile terminal 170 (S315).

In accordance with the call connection of the calling exchange 120, the exchange 160 of the overseas roaming mobile terminal 170 performs an incoming call procedure to the overseas roaming mobile terminal 170, and the overseas roaming mobile terminal 170 is busy. Or, when the incoming call fails due to a shadow area, no response (S317), the called side exchange 160 includes the reason for the failed call for the call forwarding process according to the call forwarding parameter recorded in the subscriber profile of the mobile terminal 170. A routing information request message (SRI: Send Routing Info) is transmitted to the gateway location register 140 (S319).

That is, the destination exchange 160 sends a routing information request message to the gateway location register 40 to obtain a call forwarding number and routing information for call forwarding. Examples of parameters included in the routing information request message are shown in Table 2 below.

parameter value Explanation MSISDN
Called number Interrogation Type Forwarding (1) Query type Forwarding reason Not reachable (1),
Busy (1),
No reply (2) Call forwarding reason Additional Signal Info Calling number

The gateway location register 140 transmits the routing information request message including the received failure reason to the domestic home location register 130 (S321), and the domestic home location register 130 includes the routing failure reason. Since the information request message has been received from the gateway location register 140, check whether or not the outgoing information service subscription for the incoming call of the overseas roaming subscriber, and if the subscription is outgoing information for the incoming call to the outgoing information providing server 180 Request transmission of (S323).

The origination information providing server 180 creates an origination information message for the incoming call, and transmits the origination information message to the overseas roaming mobile terminal 170 through the short message center 190 (S325). The outgoing information message for the unreachable call includes the call origination time, the caller's telephone number, the reason for the incoming call failure, and the like.

The method of the present invention as described above may be embodied as a program and stored in a computer-readable recording medium (such as a CD-ROM, a RAM, a ROM, a floppy disk, a hard disk, or a magneto-optical disk).

While the specification contains many features, such features should not be construed as limiting the scope of the invention or the scope of the claims. Also, the features described in the individual embodiments herein can be implemented in combination in a single embodiment. Conversely, various features described herein in a single embodiment may be implemented in various embodiments individually or in a suitable subcombination.

It is to be understood that, although the operations have been described in a particular order in the figures, it should be understood that such operations are performed in a particular order as shown, or that a series of sequential orders, or all described operations, . In some circumstances, multitasking and parallel processing may be advantageous. In addition, it should be understood that the division of various system components in the above-described embodiments does not require such division in all embodiments. The above-described program components and systems can generally be implemented as a single software product or as a package in multiple software products.

The present invention described above is capable of various substitutions, modifications, and changes without departing from the technical spirit of the present invention for those skilled in the art to which the present invention pertains. It is not limited by the drawings.

The following drawings, which are attached to this specification, illustrate preferred embodiments of the present invention, and together with the detailed description of the present invention serve to further understand the technical spirit of the present invention, the present invention includes matters described in such drawings. It should not be construed as limited to.

1 is a diagram showing the configuration of a system for providing outgoing information on an incoming call to an overseas roaming subscriber according to an embodiment of the present invention.

2 is a flowchart illustrating a location registration procedure of an overseas roaming mobile terminal according to an embodiment of the present invention.

3 is a flowchart illustrating a procedure for providing outgoing information on an incoming call to an overseas roaming mobile terminal according to an embodiment of the present invention.

Claims (10)

In the outgoing information providing system for providing outgoing information on the incoming call to the overseas roaming subscriber, A domestic exchange receiving an outgoing call sent from a domestic mobile terminal to an overseas roaming mobile terminal and requesting an incoming exchange of the outgoing call to an overseas exchange; Upon receiving a location registration request from the overseas roaming mobile terminal, transmit a subscriber profile including a call forwarding parameter instructing a call forwarding operation to be performed when a call forwarding is impossible and according to the call forwarding impossible. Receiving a routing information request for call forwarding processing based on a call forwarding parameter included in the subscriber profile from the foreign exchange, and providing outgoing information for the call forwarding call upon receiving a routing information request for the call forwarding processing. A home location register to request; And An origination information providing server configured to create an origination information message including an origination information for the incoming call in response to a request for providing outgoing information from the home location register and transmit the origination information message to the overseas roaming mobile terminal; Informational system. delete The method of claim 1, The home location register, In response to receiving a request for routing information for the call forwarding processing, confirm whether the overseas roaming mobile terminal subscribes to the outgoing call information providing service for the incoming call, and requests to provide the callout information for the incoming call when the service is subscribed. Calling information providing system for an incoming call. The method of claim 3, wherein The routing information request for the call forwarding process includes query type information for querying the call forwarding. The home location register, the originating information providing system for the incoming call, characterized in that for confirming whether or not to subscribe to the outgoing information providing service for the incoming call of the overseas roaming mobile terminal based on the query type information. The method of claim 3, wherein The routing information request for the call forwarding process includes a reason for not being received. The home location register, the origination information providing system for the incoming call, characterized in that for transmitting the outgoing information including the reason for the incoming call to the originating information providing server. In a method for providing outgoing information on an incoming call to an overseas roaming subscriber in a communication system, (a) upon receiving a location registration request from a foreign roaming mobile terminal, transmitting a subscriber profile including a call forwarding parameter instructing a call forwarding operation to be performed when a call is unavailable; (b) receiving an outgoing call sent from the domestic mobile terminal to the overseas roaming mobile terminal and requesting the overseas exchange to process the incoming call; (c) receiving a request for routing information for a call forwarding process based on a call forwarding parameter included in the subscriber profile from the foreign exchange in response to a failure of the incoming call; And (d) creating an outgoing information message including outgoing information about the outgoing call based on the routing information request for the forwarding call processing and transmitting the outgoing information message to the overseas roaming mobile terminal; How to provide outgoing information. delete The method of claim 6, The step (d) Checking whether the overseas roaming mobile terminal subscribes to an outgoing call service providing service for a call forwarding call when the routing information request for the call forwarding process is received; providing outgoing call information for a call forwarding call; Way. The method of claim 8, The routing information request for the call forwarding process includes query type information for querying the call forwarding. The step (d) And checking whether the overseas roaming mobile terminal subscribes to the outgoing call information providing service for the incoming call request based on the query type information. The method of claim 8, The routing information request for the call forwarding process includes a reason for not being received. The step (d) Calling information providing method for a call forwarding call, characterized in that for transmitting the outgoing information message including the reason for the incoming call to the overseas roaming mobile terminal.

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