KR100822855B1 - Method for providing ring back tone of international roaming and mobile communication system therefor - Google Patents

Abstract

An international roaming ring back tone providing method and a mobile communication system for the same are provided to supply a ring back tone service to a transmitting party's mobile communication terminal, which has attempted call connection to an international roaming mobile communication terminal of a receiving party, by using a gateway switch. An transmitting party's MSC(Mobile Switching Center) requests location information of a receiving party's mobile communication terminal to an HLR(Home Location Register)(S201). If the receiving party's mobile communication terminal is in an international roaming state, the HLR transmits a gateway switch address and ring back tone information of the receiving party's mobile communication terminal to the transmitting party's MSC(S203). The transmitting party's MSC transmits a call connection request including the ring back tone information to a gateway switch based on the gateway switch address(S205). The gateway switch requests the location information of the receiving party's mobile communication terminal to a global location register, and receives a receiving party's MSC address as a response to the request(S207,S209). The gateway switch requests call connection to the receiving party's MSC based on the receiving party's MSC address and transmits a ring back tone request message, including the ring back tone information received from the transmitting party's MSC, to a ring back tone providing server(S211,S213). The ring back tone providing server transmits a ring back tone, preset by a receiving party, to the transmitting party's MSC so as to be transmitted to the transmitting party's mobile communication terminal(S215).

Description

Method for Providing International Roaming Ring Tone and Mobile Communication System for It {Method for Providing Ring Back Tone of International Roaming and Mobile Communication System therefor}

1 is a view showing the configuration of a domestic and international mobile communication network for providing a general international roaming service,

2 is a flowchart illustrating a conventional international roaming service method;

3 is a diagram illustrating a configuration of a mobile communication network and a server for providing a ring back tone according to the present invention;

4 is a flowchart illustrating a method for providing international roaming ring back tone according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: foreign mobile communication network 11, 21, 250: gateway exchange

13, 23, 230: mobile communication switch 20: domestic mobile communication network

30: international signaling network 40: international telephone network

100: mobile communication terminal 210: base station

310: home location register 330: global location register

400: server for providing ring back tone

The present invention relates to a method for providing international roaming ring back tone and a mobile communication system therefor, and more particularly, to a method for providing an international roaming ring back tone for providing a ring back tone to a calling party that attempts to make a call to a called party while roaming internationally. It relates to a mobile communication system for this purpose.

 Currently, when a domestic mobile communication terminal user moves out of the country, the convenience of the international automatic roaming service that provides their mobile communication terminal to be used abroad is highlighted, and the number of users using it is increasing.

1 is a view showing the configuration of a domestic and international mobile communication network for providing a general international roaming service.

As shown, domestic and foreign mobile communication systems include a domestic mobile communication network 10 including a gateway exchange 11 and a mobile communication exchange 13, a domestic mobile communication network including a gateway exchange 21 and a mobile communication exchange 23. 20, an international signaling network 30 used for the transfer of a routing phone number between the foreign mobile communication network 10 and the domestic mobile communication network 20, and a communication path between the foreign mobile communication network 10 and the domestic mobile communication network 20 It includes international telephone network 40 for the connection.

The roaming service procedure in the above-mentioned domestic and overseas mobile communication system will be described with reference to FIG. 2.

When the mobile communication terminal of the domestic mobile communication network 20 is located in the service area of the foreign mobile communication network 10 after subscribing to the roaming service, a call connection is made from the calling party to the mobile communication terminal roaming to the foreign mobile communication network 10. request.

Hereinafter, for convenience of description, the device in the domestic mobile communication network 20 will be referred to as a calling party, and the device in the foreign mobile communication network 10 will be referred to as a called party.

As the calling party's mobile communication switch 23 requests location information of the called party to the home location register (S101), the home location register requests routing information to the global location register (S103).

Thereafter, the global location register requests and receives routing information from the destination side mobile communication exchange 13 of the foreign mobile communication network 10 through the gateway exchange and the international signaling network (S105 and S107).

As the global location register transmits the routing information to the home location register (S109), the home location register transmits the location information of the called party to the calling mobile communication switch 23 (S111).

Subsequently, the calling party mobile communication switch 23 passes through the gateway exchange 21 and the international signal network 30 to the called party mobile communication switch 13 of the foreign mobile communication network 10 based on the location information of the called party. An ISUP call is requested by transmitting an ISUP IAM (Initial Address Message) (S113).

The called party mobile communication exchanger 13 sends an ISUP ACM (Address Complete Message) via the international signaling network 30 and the gateway exchange 21 in response to the ISUP IAM. To transmit (S115).

Here, the called party mobile communication exchange 13 provides a ring back tone through the international telephone network 40 and the gateway exchange 21 after transmitting the ISUP ACM (S117).

If the called party subscriber is a call replacement substitute sound service subscriber, a call connection tone server (not shown) located in the domestic mobile communication network provides a call connection replacement tone to the calling mobile terminal in step S117.

The called party mobile communication exchange 13 sends an ISUP ANM (Answer Message) via the international telephone network 40 and the gateway exchange 21 when receiving a response signal from the called mobile communication terminal receiving the ring signal. It transmits to the side mobile communication switch (23) (S119).

Then, between the calling mobile terminal and the called mobile terminal by the switching connection between the calling mobile communication switch 23 in the domestic mobile communication network 20 and the called mobile communication switch 13 in the foreign mobile communication network 10. The call path is connected (S121).

On the other hand, when the international roaming service is processed as described above, there is a problem that the delay time occurs according to the characteristics of the destination mobile communication switch 13 located in the foreign mobile communication network 10, so that the ring back tone service is not smoothly performed. Often occurs.

In addition, when the called party's mobile terminal, which has roamed internationally, enters the call connection replacement service, the calling mobile communication exchange 23 requests a call connection replacement sound transmission to a corresponding server providing the call connection replacement sound, and the server A call transfer replacement sound transmitted from the mobile station is transmitted to the calling mobile terminal.

However, as the number of users using the international roaming service has soared, the role of the mobile communication switch located in the domestic mobile communication network has increased. Therefore, the mobile communication switch has a heavy load and cannot provide a smooth mobile communication service. There is a problem that cases often occur.

The present invention has been made to solve the above-described problems, the international for providing a ring back tone service to the calling party that attempts to connect to the called party in international roaming using the gateway exchange to reduce the load on the mobile communication exchange There is a technical problem in providing a roaming ring back tone and a mobile communication system for the same.

In addition, an object of the present invention is to provide a smooth ring back tone service to a calling mobile terminal that attempts to make a call to an international roaming called mobile terminal.

The present invention for achieving the above object is connected to a mobile communication network, a mobile communication network including a home location register, a gateway exchange, a global location register and a ring back tone providing server providing a ring back tone, providing an international roaming ring back tone As a method,

a) requesting the location information of the called-party mobile terminal to the home location register by the calling-party mobile communication switch as the call connection is attempted from the calling party; b) when the home location register inquires the location of the called mobile communication terminal, and the called mobile communication terminal is in the international roaming state, the gateway exchange address and the ring back tone information of the called mobile communication terminal are transmitted. Sending to the exchange; c) sending, by the calling mobile communication exchange, a call connection request including ring back tone information to the corresponding gateway exchange based on the gateway exchange address sent from the home location register; d) the gateway exchange requesting the location information of the called mobile communication terminal from which the calling party requests the call connection to the global location register, and receiving the called mobile communication exchange address in response thereto; e) a ring back tone request message including a ring back tone information received from a calling mobile telecommunication exchange to a ring back tone providing server and requesting a call connection to the corresponding called mobile telecommunication exchange based on the called mobile telecommunication switch address; Transmitting; And f) the ring back tone providing server transmitting the ring back tone preset by the called party to the calling mobile communication exchange to be delivered to the calling mobile terminal.

Another embodiment of the present invention includes a mobile communication exchange, a home location register, a gateway exchange, a global location register, and is connected with a ring back tone providing server that provides ring back tone, and provides a mobile roaming ring back tone.

Manages international roaming information by mobile terminal, gateway address of international roaming mobile communication terminal, additional service related information and current location information of mobile communication terminal. A home location register for providing international roaming information and ring back tone information for; And requesting and receiving location information of the called mobile terminal in an international roaming state with a global location register, and making a call connection between the calling mobile terminal and the called mobile terminal based on the received location information of the called mobile terminal. A gateway for requesting transmission of a ring back tone to the calling mobile terminal by performing a process and providing a ring back tone providing server.

The ring back tone disclosed in the detailed description of the present invention means a call ring replacement sound that is sent to the calling party instead of the ring back tone, such as movie music, music, classical music, and advertisement music.

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

First, Figure 3 is a diagram showing the configuration of a mobile communication network and a server for providing a ring back tone according to the present invention.

As shown, the mobile communication system includes a base station 210 supporting wireless section communication with the mobile communication terminal 100, a mobile communication exchange 230 for connecting to one or more base station controllers, and performing a call exchange. 250, a home location register 310, and a global location register 330, and are connected to a ring back tone providing server 400 that provides a ring back replacement tone (hereinafter referred to as a ring back tone).

In more detail, the gateway switch 250 requests and receives the location information of the called mobile terminal (not shown) that is in an international roaming state from the global location register 330, and receives the received mobile terminal. The call connection process is performed between the calling mobile terminal 100 and the called mobile terminal based on the information, and the call connection sound providing server 400 requests a call connection sound transmission to the calling mobile terminal 100.

In addition, when the gateway exchange 250 receives an acceptance message for the call connection request transmitted from the called mobile communication exchange, the gateway exchange 250 transmits the call connection tone release request message to the call connection tone providing server 400 and transmits the call connection tone to the calling party. To stop.

The home location register 310 manages international roaming information for each mobile communication terminal, gateway exchange address of an international roaming mobile communication terminal, additional service related information, and current location information of the mobile communication terminal. It provides international roaming information and ring back tone information about roaming called mobile terminal. Here, the ring back tone information includes identification information of a sound source allocated for each sound source preset by the called party, for example, in the form of # 1-cy champion, # 2-ru black glasses, and the like.

The global location register 330 receives and stores subscriber information of a mobile communication terminal to move out of the country from an international roaming center server (not shown), and stores location information of a mobile communication terminal in an international roaming state from a foreign mobile communication network. Receive and manage

FIG. 4 is a flowchart illustrating a method for providing international roaming ring back tone according to the present invention. A case in which a called-party mobile communication terminal subscribes to a ring back tone service will be described as an example.

First, the calling mobile communication switch 230 requests the location information of the called mobile communication terminal to the home location register 310 as a call connection is attempted from the calling party (S201).

Subsequently, when the home location register 310 inquires the location of the called mobile communication terminal at the request of the calling mobile communication exchange 230, when the called mobile communication terminal is in an international roaming state, the called mobile communication The gateway exchange address and the ring back tone information of the terminal are transmitted to the calling mobile communication switch 230 (S203).

Here, the home location register 310 transmits the ring back tone information including the identification information of the sound source preset by the called party to the calling mobile communication switch 230.

The calling mobile communication exchange 230 transmits a call connection request including the ring back tone information to the corresponding gateway switch 250 based on the gateway switch address transmitted from the home location register 310 (S205).

Subsequently, the gateway exchange 250 requests the location information of the called-party mobile communication terminal to which the calling party requests a call connection to the global location register 330 (S207), and receives the called-party mobile communication exchange address in response thereto. (S209).

The gateway exchange 250 requests a call connection to the called mobile communication exchange based on the called mobile communication exchange address received from the global location register 330 (S211), and the calling party provides the ring back tone providing server 400. The call ring tone request message including the ring back tone information received from the mobile communication exchange is transmitted (S213).

Subsequently, the call connection sound providing server 400 transmits the call connection tone preset by the called party to the calling mobile communication switch 230 so as to be delivered to the calling mobile communication terminal 100 (S215).

When the gateway exchange 250 receives the acceptance message for the call connection request from the called-party mobile communication exchange, the gateway switch 250 transmits the call connection tone release request message to the call connection tone providing server 400 (S217 and S219).

The ring back tone providing server 400 releases the ring back tone transmission to the calling mobile communication exchange 230 in response to receiving the ring back tone request message from the gateway exchange 250 (S221).

Thereafter, the calling mobile communication exchange 230 is connected to the called mobile communication exchange and the call path.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof. Therefore, the embodiments described above are to be understood in all respects as illustrative and not restrictive. The scope of the present invention is shown by the following claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

As described above, the method for providing an international roaming ring back tone and a mobile communication system for the same provide a ring back tone service to a calling party that attempts to make a call to an international roaming party using a gateway exchange. The advantage is that the load can be reduced.

In addition, the present invention has the advantage that it is possible to provide a smooth ring back tone service to the calling mobile terminal to attempt to connect to the international roaming called mobile terminal.

Claims (6)

A mobile communication network including a mobile communication exchange, a home location register, a gateway exchange, and a global location register, and a ring back tone providing server that provides ring back tone, provide a roaming ring back tone. a) requesting the location information of the called-party mobile terminal to the home location register by the calling-party mobile communication switch as the call connection is attempted from the calling party; b) when the home location register inquires the location of the called mobile communication terminal, and the called mobile communication terminal is in the international roaming state, the gateway exchange address and the ring back tone information of the called mobile communication terminal are transmitted. Sending to the exchange; c) sending, by the calling mobile communication exchange, a call connection request including ring back tone information to the corresponding gateway exchange based on the gateway exchange address sent from the home location register; d) the gateway exchange requesting the location information of the called mobile communication terminal from which the calling party requests the call connection to the global location register, and receiving the called mobile communication exchange address in response thereto; e) a ring back tone request message including a ring back tone information received from a calling mobile telecommunication exchange to a ring back tone providing server and requesting a call connection to the corresponding called mobile telecommunication exchange based on the called mobile telecommunication switch address; Transmitting; And f) allowing the ring back tone providing server to transmit the ring back tone preset by the called party to the calling mobile communication exchange to be delivered to the calling mobile terminal; International roaming ring back tone providing method comprising a. The method of claim 1, In step b), And the home location register transmits the ring back tone information including the identification information of the sound source preset by the called party to the calling mobile communication exchange. The method of claim 1, After step f), g) when the gateway exchange receives the acceptance message for the call connection request from the called mobile communication exchange, sending a ring back tone release request message to the ring back tone providing server; And h) disabling the ring back tone transmission to the calling mobile communication exchange by the call back tone providing server; International roaming ring back tone providing method comprising a. A mobile communication system for providing an international roaming ring back tone, connected to a ring back tone providing server including a mobile switching center, a home location register, a gateway switch, and a global location register, the ring back tone providing a ring back tone, Manages international roaming information by mobile terminal, gateway address of international roaming mobile communication terminal, additional service related information and current location information of mobile communication terminal. A home location register for providing international roaming information and ring back tone information for; And Requesting and receiving the location information of the called mobile terminal in the international roaming state with the global location register, and making a call connection process between the calling mobile terminal and the called mobile terminal based on the received location information of the called mobile terminal. A gateway exchange requesting a ring back tone providing server to transmit a ring back tone to the calling mobile terminal; Mobile communication system for providing an international roaming ring back tone comprising a. The method of claim 4, wherein The ring back tone information, A mobile communication system for providing an international roaming ring back tone, characterized in that the information includes identification information of a sound source preset by the called party. The method of claim 4, wherein The gateway exchanger, And upon receiving an acceptance message for the call connection request transmitted from the called party's mobile communication switch, transmitting a ring back tone request message to the call back tone providing server.

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