KR100878076B1 - Vms automatic access system in case of international roaming and method thereof - Google Patents

Abstract

The present invention relates to a system and method for automatically accessing a voice mail box when roaming internationally using a mobile communication terminal. That is, the present invention provides a method for automatically accessing a voice mail box when roaming internationally. In the case where a mobile communication terminal subscriber who is roaming internationally has a voice message arriving at a domestic voice mail box system, a called party who is roaming internationally on a GLR is a domestic voice mail box system. By inserting the bearer data including the international phone code, the country code and the voicemail system access number information that the subscriber is located in the SMS message notifying the arrival of the voice message, the subscriber is provided to the exchange of the country where the subscriber is located. In this way, the terminal subscribers who are roaming internationally can immediately call back and access their voicemail boxes as in Korea.

Voicemail, international roaming, country code, SMS

Description

Automatic voice access system and method for international roaming {VMS AUTOMATIC ACCESS SYSTEM IN CASE OF INTERNATIONAL ROAMING AND METHOD THEREOF}

The present invention relates to an international roaming method of a mobile communication terminal, and more particularly, to international roaming using a mobile communication terminal in a mobile communication network such as code division multiplex access (CDMA), global system for mobile communication (GSM), and WCDMA. The present invention relates to a voicemail automatic access system and method.

In general, a voice mail system (VMS) is a system for storing a message by a human voice as a file, and when a call between mobile communication terminals is not made, the calling terminal subscriber wants to leave the called terminal subscriber. A system for receiving and storing a message as a voice and then providing a stored voice message to a called terminal subscriber who wants to listen to the voice message by accessing the system.

1 illustrates a signal processing flow for storing and confirming a voice message in a voice mail system implemented in a conventional domestic mobile communication network. Hereinafter, a conventional voice mail operation will be described in detail with reference to FIG. 1.

First, if any calling terminal subscriber attempts to make a call to the other called terminal subscriber 100 on the domestic mobile communication network, and if the corresponding call fails, the calling terminal subscriber receives the call according to the guidance of the voicemail system 106. The voice message to be delivered to the subscriber is left. When the voice message is left as described above, the voicemail system 106 notifies the called terminal subscriber of the arrival of the voice message and at the same time the SMC 104 with a feature code that can directly access the voicemail system 106. It transmits to SMDPP (SMS Delivery Pointto Point) message (S10). In this case, the feature code may be indicated as * 89 in the case of SKT (SK Telecom).

Accordingly, the called party terminal 100 recognizes that the message is stored in the voice mail box and transmits the feature code transmitted to the voice mail box to directly listen to the voice mail box (S12). A mobile switching center (hereinafter referred to as "MSC") 102 recognizes an incoming subscriber's * 89 feature code input and receives a voice mail system access number (VSRN: Voice mail system) in which the subscriber is accepted in the HLR. Receive Routing Number and access to voicemail.

As shown in FIG. 1, the mobile communication terminal subscribers can leave and listen to a message to be communicated between the terminal subscribers at any time even when a call between the mobile communication terminals is not made through the voicemail box. It's one of the services.

On the other hand, the recent improvement in the standard of living of the people and the demand for globalization socially, and the number of overseas departures is increasing rapidly. As a result, the demand for international roaming service that provides mobile communication services in other countries is rapidly increasing. There is a trend. Therefore, it is necessary to provide the same voicemail service as described in FIG. 1 for subscribers who are roaming internationally, but at present, a feature code that can be accessed by a foreign exchanger that is accessed by a terminal during international roaming can be directly connected to a domestic voicemail box. There is a problem that it is difficult to directly verify the voice mailbox as in the domestic mobile communication network can not provide.

FIG. 2 illustrates a signal processing flow for an operation of connecting to a conventional voice roaming box during the international roaming as described above. Hereinafter, the operation and problems of the voice mail connection during international roaming will be described with reference to FIG. 2.

First, if any caller terminal subscriber attempts to reach the called party terminal subscriber 200 who roams to China, for example, on the domestic mobile communication network, and if the corresponding call fails, the caller terminal subscriber is a voice mail system. According to the guidance of 206, a voice message to be delivered to the called subscriber is left.

When the voice message is left as described above, the voice mailbox system 206 receives the voice message to the called terminal subscriber 200 through the MSC 201 in China where the called terminal subscriber is roaming internationally. At the same time as the notification and transmits the feature code that can be directly connected to the voicemail system 206 to the SMDPP message through the SMC (204) (S10). In this case, the feature code may be indicated as * 89 in the case of SKT as described above, which is roamed to the corresponding Chinese MSC 201 through the GLR 202 and transmitted.

Accordingly, the called party terminal 200 recognizes that the message is stored in the voice mail box and attempts to listen to the voice message delivered to the user by accessing the voice mail box. However, unlike listening to a voice mail box in Korea, the called party terminal subscriber 200 roaming to China is simply unable to access the voice mail system 206 using the feature code. This is because a subscriber who is roaming in China cannot use feature codes such as * 89, etc. used in Korea. Is not able to route the accepted VSRN number. Therefore, in order to listen to the voice message left in the domestic voice mail system 206, the receiver terminal currently roaming in China had to access the voice mail system 206 through international call (S22).

That is, as described above in FIG. 2, the mobile roaming terminal subscriber who is roaming internationally is notified that there is a voice message left in the domestic voice mail system, and then loaded in the voice mail message for listening to the voice message. * Callback using feature codes such as 89 cannot be used, and in order to access the domestic voicemail system, the user has to be inconvenient in using the international phone code and the voicemail system access number to try to listen to the voicemail. .

Accordingly, the present invention has been made to solve the conventional problem of having to input the international phone code and voicemail system access number through international calls to access the voicemail box during international roaming. The present invention provides a voice mail automatic access system and method for directly accessing a domestic voice mail box through callback transmission.

The present invention described above is an automatic roaming system for voicemail when roaming internationally, and when a voice message is stored to a called mobile communication terminal roaming internationally by an originating terminal, the VMS notifies arrival of a voice message to the called terminal; An HLR storing location registration information for a called party terminal which is roaming internationally, and in connection with the HLR, an international roaming position of the called terminal is determined, and the called terminal in a SMDPP message for notification of arrival of the voice message is a domestic VMS. It is characterized in that it comprises a GLR to insert the bearer data to enable direct access to the foreign MSC where the destination terminal is located.

In addition, the present invention provides a method for automatically accessing a voicemail box when roaming internationally, comprising the steps of: (a) detecting location information for each terminal subscriber in connection with an HLR when registering a location of a mobile communication terminal roaming in GLR, and (b) a domestic VMS. Storing a voice message requested to be transmitted from any originating terminal to the called terminal which is roaming internationally; and (c) notifying the arrival of the voice message transmitted from the GLR to the called terminal generated from the VMS. Receiving a SMDPP message, and (d) inserting bearer data in the GLR to allow the called terminal to directly access the VMS in the SMDPP message and transmitting the bearer data to an overseas MSC in which the called terminal is located; It is characterized by.

In the present invention, in the method of automatically accessing a voicemail box when roaming internationally, when a mobile communication terminal subscriber who is roaming internationally has a voice message arriving in a domestic voicemail system, the called party who is roaming internationally from the GLR is directly connected to the domestic voicemail system. Bearer data including international phone code, national country code and voicemail system access number information for the subscriber to be inserted are inserted into the SMS message notifying the arrival of the voice message and provided to the exchange of the country where the subscriber is located. Roaming terminal subscribers can immediately call back as in Korea to be able to access their voicemail box, there is an advantage that can greatly increase the convenience of use.

Hereinafter, with reference to the accompanying drawings will be described in detail the operation of the preferred embodiment according to the present invention.

3 illustrates a mobile communication network structure for an international roaming call according to an embodiment of the present invention, and illustrates a mobile communication network structure for CDMA international roaming call for convenience of description among mobile communication networks such as CDMA, GSM, and WCDMA. will be. Therefore, the international roaming operation method in the CDMA network described below will be described in detail, but this is merely for convenience of description and can be equally applied to other mobile communication networks such as GSM and WCDMA.

3, a mobile station (MS) A of a calling party's domestic subscriber A (A) 300 is a user interface device and is connected with a called party's terminal formed by a call by the MSC 306. According to the present invention, when an incoming call fails in connection with an international subscriber who is roaming according to the present invention, for example, a destination terminal subscriber B 318 in China, the called party subscriber is connected to a voice mail system (VMS) 312 on a domestic mobile communication network. Leave a voice message to the B (318).

A base transceiver station (BTS) 302 is a device configured as a radio transceiver and transmits / receives voice calls and packet data through a wireless link with a mobile communication terminal 300 in a radio access network (RAN). . A base station controller (BSC) 304 manages a plurality of BTSs 302 and is in charge of processing of radio channel setup, frequency hopping, handover, and the like.

MSC 306 is responsible for mobility management, location registration / management, authentication, handover, roaming, etc. of the terminal (A) 300, and also the location of mobile communication terminals in each base station through the VLR (Visitor Location Register) The registration information is updated and stored, and the changed location registration information of the terminals is transmitted to the HLR 308 managing the location registration information of the terminal so that the location information of the mobile communication terminal 300 is periodically updated.

In addition, in international roaming according to an embodiment of the present invention, the MSC 306 performs a role as a domestic MSC when receiving a call request from the domestic mobile communication terminal 300 to the called terminal 318 applying for international roaming. An incoming call is sent to the overseas MSC 316 where the called terminal 318 is located to form a call path.

The home location register (HLR) 308 manages the current location information of the mobile communication terminal 300, the status of mobile subscribers, statistics, and various service related information.

The voicemail system 312 receives and stores a message that the calling party terminal A 300 wants to leave to the called party terminal B 318 when the call between the mobile communication terminals is not made, and then stores the message. After notifying the called party B (318), and accesses the system 312 to provide a stored voice message to the called party terminal B (318) to listen to the voice message.

The Short Message Center (SMC) 314 transmits a voice message to the voice mailbox system 312 to be delivered to the destination terminal subscriber B 318, which is roaming internationally, in response to a call failure from the originating terminal subscriber A 300 of the domestic mobile communication network. When stored, the SMSPP sends an SMSPP (SMS Delivery Pointto Point) message indicating the arrival of the voice message to the called party terminal B 318 according to the request of the voice mail system 312.

The GLR 310 checks the location of the called terminal (B) 318 that is requested from the domestic MSC 306 through international roaming and sends it to the overseas MSC 316 where the called terminal (B) 218 is located. The incoming request from the terminal (A) 300 is transmitted.

In addition, SMDPP message notifying the storage of the voice message from the SMC 314 when the domestic calling party terminal A 300 stores a voice message when the incoming terminal subscriber B (318) during the international roaming abroad, such as China Is transmitted to the called party's terminal subscriber B (318) through the Chinese MSC (316). At this time, the GLR 310 according to the present invention, if bearer data of the SMDPP message is '* 89', the Chinese international telephone code, the country code in this embodiment, the Republic of Korea country code, voicemail system access number, For example, '0082112008585' is inserted instead and transmitted to the MSC 316 where the called party terminal B 318 in China is located.

At this time, the GLR 310 is a country-specific feature code for allowing the recipient terminal B 318, which is roaming as described above, to easily access the domestic voicemail system 312 through callback transmission as in Korea. The country code for the range of the exchanger ID (MSCID) of the overseas operators should be managed for the insertion of the data.

[Table 1] below shows a table managed by the GLR 310 in order to recognize country codes by the range of the foreign exchanger ID (MSCID) range.

TABLE 1

MSCID country International Call Code From To 0 2175 US 011 8192 8223 Thailand 00

Using the table information in [Table 1] above, the GLR 310 checks the national and international telephone codes by detecting the MSCID parameter in the location registration (Registration_Notification) of the domestic mobile communication network subscriber who is roaming internationally. Can be.

That is, when the GLR 310 receives the SMDPP message from the SMC 314 during the SMS transmission informing the corresponding subscriber of the voice message arrival, the GLR 310 analyzes the bearer data of the SMDPP message and the bearer data is '* 89'. In the case of the number for voicemail access, the MSCID information is detected from the location information of the called party B 318 to detect the international telephone code in the country where the called party B 318 is located based on the table of the above [Table 1]. After that, the bearer data of the SMDPP message is changed and transmitted in the form of '01182112008585' including the voicemail system access number. In this case, the GLR 310 may be managed in a separate DB (Data Base) in consideration of a case where the voice mailbox system access representative number is changed in the future.

The roaming signal network 315 generally refers to a signal network (STP) for interworking a mobile communication service between an operator and an operator, and includes a signal network provider (Syniverse, Verisign, etc.) that provides an STP service.

4 is a flow diagram illustrating a signal processing flow that enables a mobile communication terminal subscriber who is roaming internationally to easily access a domestic voicemail system through a callback and check a voice message that has arrived to him according to an embodiment of the present invention. It is. Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 and 4. In particular, in the description of the embodiment of the present invention, the description is made by setting the international roaming target country to China, but it is applicable to any country where international roaming is possible.

First, the called party terminal B 318, which roams internationally to China, performs location registration via the domestic GLR 310 / HLR 308 (S40), wherein the GLR 310 is the location of the Chinese MSC 316. By referring to the MSCID in the registration message, the subscriber B 318 knows that it has roamed to China.

Subsequently, if an originating terminal subscriber A 300 on the domestic mobile communication network attempts an incoming call to the called party's terminal subscriber B 318 that roams to China, for example, and then the call fails, The subscriber A 300 leaves a voice message to be delivered to the called subscriber B 318 according to the guidance of the voice mail system 312.

When the voice message is left as described above, the voice mailbox system 312 receives the voice message to the called party's terminal subscriber B 318 through the MSC 316 in China where the called party's terminal subscriber roaming in China is located. At the same time, the feature code that can be directly connected to the voicemail system 312 is transmitted to the SMDPP message through the SMC (314). In this case, the above feature code may be indicated as * 89 in the case of SKT as described above, which is roamed to the corresponding Chinese MSC 316 through the GLR 310 (S42).

Then, the called party terminal B 318 recognizes that the message is stored in the voice mail box and attempts to listen to the voice message delivered to the user by accessing his voice mail box. However, unlike the voice mailbox in Korea, the destination terminal subscriber B 318, which is roaming in China, cannot access the voice mailbox system 312 using the feature code as described above.

Accordingly, in the present invention, the destination terminal subscriber B 318, which is roaming internationally in the GLR 310, bears the bearer data included in the SMDPP message so that it can easily access the domestic voicemail system 312 through the callback, as in Korea. It will be changed and sent.

That is, the GLR 310 receives the bearer data of the SMDPP message when receiving the SMDPP from the SMC 314 upon SMS transmission (S42) informing the incoming terminal subscriber B 318 that is roaming internationally according to the present invention. When the bearer data is a number for accessing a voice mail box such as '* 89', the called party B 318 based on the table of Table 1 with reference to MSCID information among the location information of the called party B 318. ) Detects the international telephone code in the country where the) is located, and then changes the bearer data of the SMDPP message in the form of '01182112008585', including the international telephone code, the national country code, and the voicemail system access number. The side terminal subscriber B 318 is transmitted to the MSC 316 located (S44).

Accordingly, the called party terminal B 318, which is roaming in China, recognizes that there is a voice message that has arrived at the domestic voice mailbox system 312, and then does not make an international call as in the prior art. As described above, after accessing the own voicemail box of the domestic voicemail system 312 through the callback transmission using the bearer data transmitted from the GLR 310 (S46), the user can check the voice message that has arrived.

As described above, the present invention provides a method for automatically accessing a voice mail box when roaming internationally, and when a mobile communication terminal subscriber who is roaming internationally has a voice message arriving at a domestic voice mail system, the called party who is roaming internationally on the GLR is called a domestic voice. Insert bearer data including the international phone code, national country code, and voicemail system access number information of the subscriber in order to access the mailbox system directly into the SMS message notifying the arrival of the voice message to the exchange in the country where the subscriber is located. By providing a terminal, a terminal subscriber who is roaming internationally can immediately call back and access his / her voicemail box as in Korea.

Meanwhile, in the above description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the invention should be determined by the claims rather than by the described embodiments.

1 is a signal processing flowchart for a conventional domestic voice mail automatic connection;

2 is a signal processing flowchart for connecting a domestic voicemail box during conventional international roaming;

3 is a block diagram of a CDMA international roaming system according to an embodiment of the present invention;

4 is a signal processing flowchart for automatically accessing a voicemail box during international roaming according to an embodiment of the present invention.

<Brief description of the major symbols in the drawings>

300, 318: MS 302: BTS

304: BSC 306, 316: MSC

308: HLR 310: GLR

314: SMC 312: VMS

Claims (6)

Automatic voice mail system when roaming internationally, When the voice message is stored in the destination mobile communication terminal roaming internationally by any calling terminal, VMS for notifying the arrival of the voice message to the called terminal; An HLR for storing location registration information about the called party terminal roaming internationally; The international roaming position of the called terminal is determined by interworking with the HLR, and the bearer data is inserted in the SMDPP message for notifying the arrival of the voice message so that the called terminal can be directly connected to the domestic VMS. GLR to MSC International roaming voice mailbox automatic access system comprising a. The method of claim 1, The GLR, the international roaming voice mailbox automatic access system, characterized in that when the location registration of the mobile roaming mobile terminal while the international roaming detects and manages the country and exchange ID information located by each terminal subscriber. The method of claim 1, The bearer data for accessing the voicemail box may include an international telephone code, a country code, and a voicemail system access number of a country in which the called party is roaming. Automatic roaming method for voicemail when international roaming, (a) detecting location information of each terminal subscriber in connection with HLR when registering a location of a mobile communication terminal roaming in GLR; (b) storing a voice message requested to be transmitted from any originating terminal to the called terminal which is roaming internationally in a domestic VMS; (c) receiving an SMDPP message informing the arrival of the voice message transmitted from the VMS to the called party terminal generated by the GLR; (d) inserting bearer data in the GLR to allow the called terminal to directly access the VMS in the SMDPP message and transmitting the bearer data to an overseas MSC where the called terminal is located; International roaming voice mail access method comprising a. The method of claim 4, wherein In the step (a), the location information, the international roaming voice mail access method, characterized in that it is stored and managed by the GLR including the country where the terminal for each roaming terminal is located and the exchange ID information. The method of claim 4, wherein In the step (d), the bearer data for accessing the voicemail box, the international roaming, characterized in that it includes the international telephone code, the country code and the country's voicemail system access number of the country where the destination terminal is roaming internationally; How to access voice mail automatically

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