KR20100072107A - Mobile communication system and method for call setup - Google Patents

Abstract

PURPOSE: A mobile communications system and a call setting method thereof are provided to store subscriber information of an unavailable subscriber and an available subscriber of display text service in a VLR(Visitor Location Register) after classifying the subscriber information. CONSTITUTION: A VLR(100) stores subscriber registration information and display text. A receiving-side mobile switching center(80) receives a call request signal from a mobile communication switching center. The receiving-side mobile switching center requests subscriber information to the VLR. The receiving-side mobile switching center produces calling messages by receiving subscriber registration information or display text.

Description

MOBILE COMMUNICATION SYSTEM AND METHOD FOR CALL SETUP}

The present invention relates to a mobile communication system and a call setup method.

When a conventional mobile communication system receives a call establishment request from an originating mobile communication exchange, the called mobile communication exchange retrieves the visitor location register to retrieve the location of the mobile communication terminal to be called.

When there is a large demand for subscriber information from the called mobile communication exchange, the visitor location register sends the subscriber information to the called mobile communication exchange.

Recently, mobile communication subscribers are often subscribed to services such as personal notification information. At this time, the visitor location register provides the subscriber information and the personal notification information corresponding to the subscriber information to the called-party mobile communication exchange.

When there is a large number of subscriber information requests from the called mobile communication exchange, the visitor location register transmits the subscriber information to the called mobile communication exchange and then transmits display text which is personal notification information.

However, the conventional mobile communication system transmits display text even when subscriber information requests of subscribers who do not subscribe to the personal notification service. Here, when subscriber information and display text not subscribed to the personal notification service are transmitted to the called-party mobile communication exchange, the called-party mobile communication exchange also uses the display text information transmitted to the dummy to generate a paging message.

The called-party mobile communication terminal may not respond when receiving a call message including dummy display text, resulting in a call setup error.

An object of the present invention is to prevent the call setting error by preventing the dummy display text is received by the destination mobile communication exchange by storing the display information service subscribers and subscribers of the non-use subscribers in the visitor location register separately and stored; To provide a call setup method.

Another object of the present invention is to compare the length of the display text received at the called-party mobile communication exchange with a preset setting value, when the display text is greater than or equal to the preset value, so that the call setting error can be reduced by not including the display text in the call message. The present invention provides a system and a call setup method.

According to an aspect of the present invention, there is provided a mobile communication system, comprising: a subscriber information manager storing display text and subscriber registration information; And requesting subscriber information from the subscriber information manager upon receiving a call request signal from an originating mobile communication exchange, and receiving a display text or subscriber registration information in response to the subscriber information request to generate a calling message. A mobile communication system including a communication switch, wherein the display text and the subscriber registration information are separately received when the first subscriber information is received.

According to another aspect of the present invention, a call setup method of a mobile communication system comprising a mobile communication switch and a subscriber information manager, the method comprising: a) requesting subscriber information to be called from the mobile communication switch to the subscriber information manager; b) receiving subscriber information corresponding to the requested subscriber information; Wherein the subscriber information is first subscriber information including subscriber registration information stored in the subscriber information manager or second subscriber information including the display text and the subscriber registration information-c) received at the mobile communication exchange Generating a call message by using the registered subscriber information and transmitting the generated call message to a called-party mobile communication terminal, when receiving the second subscriber information, separately receiving the display text and the subscriber registration information. A call setup method of a mobile communication system is provided.

The mobile communication system and the call setup method according to the present invention have an advantage of reducing call setup errors by separately storing subscriber information and display text in the visitor location register according to the display text subscriber and the non-subscriber.

In addition, the mobile communication system and the call setup method according to the present invention have an advantage of reducing the error in generating the call message by maintaining the length of the display text received at the called-party mobile communication exchange below the set value.

As the invention allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the written description. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all transformations, equivalents, and substitutes included in the spirit and scope of the present invention. In the following description of the present invention, if it is determined that the detailed description of the related known technology may obscure the gist of the present invention, the detailed description thereof will be omitted.

The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In this application, the terms "comprise" or "have" are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, and one or more other features. It is to be understood that the present invention does not exclude the possibility of the presence or the addition of numbers, steps, operations, components, components, or a combination thereof.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In order to facilitate a thorough understanding of the present invention, the same reference numerals are used for the same means regardless of the number of the drawings.

Hereinafter, for convenience of description, the destination mobile communication exchange and the source mobile communication exchange are described separately, but the destination mobile communication exchange and the source mobile communication exchange of the present invention may perform the same function.

In addition, in the present invention, the subscriber information manager may include an HLR, a VLR, and an intelligent network device that manages subscriber information. In the present specification, the subscriber information manager is described using HLR and VLR as an example, but the present invention is not limited thereto.

In this specification, the subscriber information manager is described in a separate configuration, but may be included in the mobile communication switch.

1 is a block diagram illustrating a mobile communication system according to an exemplary embodiment of the present invention.

Referring to FIG. 1, a mobile communication system according to an embodiment of the present invention may include a calling party mobile communication exchange 60, a called party mobile communication exchange 80, a calling party mobile communication terminal 50, and a called party mobile communication terminal. 90, Home Location Register (hereinafter referred to as "HLR") 70 and Visitor Location Register (hereinafter referred to as "VLR") 100. In this case, the VLR 100 according to an embodiment of the present invention may store subscriber registration information and display text of a mobile communication terminal, and provide information stored in a mobile communication switch when a call is made. . In the following description, the VLR 100 will be described as an example of a subscriber information manager.

Specifically, the calling mobile terminal 50 and the called mobile terminal 90 include a conventional mobile communication terminal using a communication scheme such as W-CDMA, CDMA, GSM, and the like.

The calling mobile communication exchanger 60 exchanges information with the HLR 70 storing subscriber information in order to perform a switching function, and transmits and receives signals and voice data with the calling mobile communication terminal 50 ( (Not shown).

When the calling mobile communication switch 60 receives a call request signal from the calling mobile communication terminal 50, the HLR 70 requests a location information confirmation request from the called mobile communication terminal 90 (LOC invoke; location request invoke). Send the signal.

The calling mobile communication exchange 60 receives a location request return (LOC return) signal corresponding to a LOC invoke from the HLR 70. The calling mobile communication exchange 60 transmits an initial address message (IAM) to the called mobile communication exchange 80 upon receiving the LOC return.

The HLR 70 receives a LOC invoke from the originating mobile communication exchange 60 and provides location information of the called party's mobile communication terminal 90 to the calling mobile communication exchange 60. At this time, the HLR 70 periodically updates the location information of the called-side mobile communication terminal 90.

The called party mobile communication switch 80 periodically updates the position information of the mobile communication terminal in the HLR 70. To this end, the called-side mobile communication exchange 80 transmits a routing request information (ROR invoke; Routing Request invoke) signal to the HLR 70, and receives a response (ROR return; Routing Request Return) signal thereto.

The destination mobile communication exchange 80 requests the subscriber information from the VLR 100 upon receiving the IAM from the source mobile communication exchange 60. The called party mobile communication exchange 80 generates a call message using the subscriber information received from the VLR 100 and transmits it to a base station controller (not shown) in the area of the called party mobile communication terminal 90.

The destination mobile communication exchange 80 requests the subscriber information and the display text from the VLR 100 if the subscriber is the display text service subscriber. The destination mobile communication exchange 80 includes the received subscriber information and the display text when creating the paging message.

When the VLR 100 receives the subscriber information request signal from the called party's mobile communication exchange 80, it provides the stored subscriber information. In this case, the VLR 100 may store additional information such as display text according to the subscriber addition service. When the VLR 100 requests the subscriber information, the VLR 100 transmits the stored subscriber registration information and the display text to the called-party mobile communication exchange 80.

In the present specification, the VLR 100 has been described as a representative example of the subscriber information manager, but the present invention is not limited thereto. The function of the VLR 100 herein may be replaced by the function of the HLR or intelligent network device.

At this time, the subscriber registration information and the display text transmitted from the VLR 100 are selectively transmitted according to the additional service subscriber. For example, the VLR 100 transmits only subscriber registration information to the called-party mobile communication switch 80 when the mobile communication subscriber does not subscribe to the service using the display text.

The VLR 100 provides subscriber registration information and display text to the called party's mobile communication exchange 80 when the mobile subscriber subscribes to the service using the display text.

Here, the display text is information that can know subscriber information in detail, such as an electronic business card.

In this case, when there is a large amount of subscriber information requested from the called mobile communication exchange 80, the storage area of the VLR 100 is divided to prevent the subscriber registration information stored in the VLR 100 and the display text from being mixed. This will be described in detail with reference to FIGS. 2 and 3.

FIG. 2 is a block diagram schematically illustrating a VLR configuration with a called mobile communication switch shown in FIG. 1.

Referring to FIG. 2, the called-side mobile communication switch 80 may include a subscriber information request unit 81, a subscriber information receiver 82, and a call message generator 83. The VLR 100 may include a first information storage area 110 and a second information storage area.

In detail, the VLR 100 is divided into a first information storage area 110 and a second information storage area 120, and different subscriber information may be stored in each.

The storage area may be divided so that the VLR 100 distinguishes and stores subscribers who do not subscribe to a service using display text.

That is, first subscriber information that is a display text service subscriber and second subscriber information that are not, may be divided and stored in the first information storage area 110 and the second information storage area 120, respectively. Here, the first subscriber information includes display text and subscriber registration information, and the second subscriber information includes subscriber registration information excluding the display text.

For example, the first information storage area 110 stores first subscriber information subscribed to the display text service. In this case, the display text is stored together with the subscriber registration information in the first information storage area 110 and matched and stored.

If there is subscriber information required in the first information storage area 110, the subscriber registration information is transmitted and then the display text is transmitted.

The second information storage area 120 stores second subscriber information that does not subscribe to the display text service. If there is subscriber information required in the second information storage area 120, only subscriber registration information is transmitted.

When the subscriber information request unit 81 receives an IAM signal from the calling mobile communication switch 60, the subscriber information requesting unit 81 requests the VLR 100 for subscriber information that matches the subscriber information of the called mobile communication terminal to be called.

In this case, the subscriber information requesting unit 81 may request the subscriber information by dividing the first information storage area 110 or the second information storage area 120. For example, the subscriber information request unit 81 searches the first information storage area 110 first, and if there is no subscriber information matching the first information storage area, the subscriber information request unit 81 searches the second information storage area 120. The information request signal may be transmitted to the VLR 100.

The subscriber information receiver 82 receives subscriber information from the VLR 100 and transfers the received subscriber information to the call message generator 83.

The subscriber information receiver 82 may include a buffer for temporarily storing the first subscriber information and the second subscriber information received from the VLR 100. The subscriber information receiver 82 provides the received information to the call message generator 83.

The call message generator 83 generates a call message through the subscriber information received from the subscriber information receiver 82, and transmits the generated call message to a base station controller (not shown) connected to the called party mobile communication exchange 80. do.

As described above, the present invention divides the VLR 100 into a first information storage area 110 and a second information storage area 120, thereby providing second subscriber information that does not subscribe to a service using display text when generating a call message. When created, call setup errors can be avoided by including no display text.

3 is a block diagram schematically illustrating a configuration according to another embodiment of a called-party mobile communication exchange and a VLR shown in FIG. 1.

Referring to FIG. 3, the called party mobile communication exchange 80 includes a subscriber information requesting unit 81, a subscriber information receiving unit 82, and a call message generating unit 83, and the VLR 100 stores the first information. An area 110, a second information storage area 120, and a pointer 130 are included.

In detail, the first information storage area 110 stores all registered subscriber registration information regardless of whether the display text service is subscribed.

For example, subscriber registration information of the first subscriber information and subscriber registration information of the second subscriber information are stored in the first information storage area 110.

The second information storage area 120 stores display text of the first subscriber information.

The pointer 130 extracts display text that matches the subscriber registration information stored in the second information storage area 120 when the first subscriber information is requested.

When the subscriber information request unit 81 receives the IAM signal from the calling mobile communication exchange, the subscriber information request unit 81 requests the subscriber information from the VLR 100.

The subscriber information receiving unit 82 receives and temporarily stores the first subscriber information and the second subscriber information corresponding to the requested subscriber information from the VLR 100. To this end, the subscriber information receiver 82 may include a buffer.

The call message generator 83 generates a call message by using the subscriber information and the display text received from the subscriber information receiver 82 and transmits the call message to a base station controller (not shown) connected to the called party mobile communication switch 80. .

4 is a flowchart illustrating a call setup method of the mobile communication system illustrated in FIG. 1.

Referring to FIG. 4, requesting subscriber information (S100), receiving subscriber information of any one of first and second subscriber information (S110), and receiving display text when receiving first subscriber information ( S120, generating a call message (S130) and transmitting a call message (S140), receiving a response signal (S150) and setting up a call (S160).

Specifically, in step S100 of requesting subscriber information, when an IAM signal related to a call request is received from the calling mobile communication switch 60, the called mobile communication switch 80 requests the subscriber information from the VLR 100. do.

In this case, the called-side mobile communication exchange 80 may first search the first information storage area and transmit a subscriber information request signal to search for the second information storage area when there is no corresponding subscriber information.

Next, in step S110 of receiving subscriber information, the subscriber information of any one of the first and second subscriber information is received. That is, the called-party mobile communication switch 100 searches for data stored in the first information storage area or the second information storage area of the VLR 100 to retrieve subscriber information that matches the requested subscriber information. )

Next, when the first subscriber information is received (S120), display text information matching the subscriber registration information is received.

Next, the step (S130) of generating the call message generates a call message including the subscriber registration information and the display text when the first subscriber information is received by the called-party mobile communication exchange 80. Generating the call message (S130), when receiving the second subscriber information, generates a call message including only subscriber registration information.

The call message transmission step S140 transmits the call message generated in the call message generation step S130 to the called party's mobile communication terminal 90. In this case, the call message is transmitted to the called party mobile communication terminal 90 through a base station controller (not shown) and a base station (not shown) connected to the called party mobile communication exchange 80.

Next, the called party's mobile communication terminal 90 transmits a response signal to the called party's mobile communication exchange 90 (S150).

Next, call setting is completed between the destination mobile communication exchange 80 and the destination mobile communication terminal 90 through the response signal transmitted to the destination mobile communication exchange (S160).

FIG. 5 is a block diagram schematically illustrating a third embodiment of the called-side mobile communication exchange shown in FIG. 1. Here, since the VLR 100 is the same as the VLR 100 illustrated in FIG. 2, duplicate description of the same configuration will be omitted. Meanwhile, the VLR 100 may be the same VLR 100 as the VLR 100 illustrated in FIG. 3.

Referring to FIG. 5, the called party mobile communication switch 80 includes a subscriber information request unit 81, a subscriber information receiver 82, a display text length comparison unit 84, and a call message generator 83.

The subscriber information request unit 81 functions as shown in FIGS. 2 and 3 and transmits a subscriber information request signal to the VLR 100.

The subscriber information receiver 82 provides the subscriber information received from the VLR 100 to the display text length comparison unit 84. Hereinafter, since the remaining functions are the same as the subscriber information receiver 82 described with reference to FIGS. 2 and 3, detailed description thereof will be omitted.

The display text length comparison unit 84 compares the length of the received display text with a preset setting value. The display text length comparison unit 84 transmits only the subscriber information to the call message generation unit 83 when the length of the display text is equal to or larger than the set value and deletes the display text. The display text length comparison unit 84 provides the display text to the call message generation unit 83 when the length of the input display text is less than or equal to a set value. For example, when the display text length is 90 bytes or less, the display text is transmitted to the call message generator 83, and when the display text length is 90 bytes or more, the display text is not transmitted to the call message generator 83.

In addition, the display text length comparison unit 84 may transmit subscriber registration information to the call message generator 83 when there is no display text.

The call message generator 83 generates a call message using the first subscriber information, the display text, and the second subscriber information received from the display text length comparison unit 84, and transmits the generated call message.

FIG. 6 is a flowchart illustrating an embodiment of a call setup method through a called-party mobile communication switch shown in FIG. 5 of the mobile communication system shown in FIG. 1.

Referring to FIG. 6, requesting subscriber information (S100), receiving subscriber information of any one of the first and second subscriber information (S110), receiving a display text (S120), and displaying text length Comparing the step (S200), generating a first call message (S210), transmitting a first call message (S220), generating a second call message (S230), and transmitting a second call message. A step S240 of receiving a response signal (S150) and a call setup step (S160) are included.

Specifically, in step S100 of requesting subscriber information, when an IAM signal related to a call request is received from the calling mobile communication switch 60, the called mobile communication switch 80 requests the subscriber information from the VLR 100. do.

In this case, the called-side mobile communication exchange 80 may first search the first information storage area and transmit a subscriber information request signal to search for the second information storage area when there is no corresponding subscriber information.

Next, receiving the subscriber information of any one of the first and second subscriber information (S110) may be performed by retrieving the data stored in the first information storage area or the second information storage area of the VLR 100 and requesting the subscriber information. And subscriber information matching with the destination mobile communication exchange 80.

As described above, the VLR 100 is merely a representative embodiment of the subscriber information manager in the present invention, and the present invention is not limited thereto. The function of the VLR 100 herein may be replaced by the function of the HLR or intelligent network device.

Next, when the first subscriber information is received (S120), display text information matching the subscriber registration information is received.

Next, comparing the length of the display text (S200) compares the length of the input display text with a preset setting value. As a result of the comparison, if the length of the display text is larger than the set value, only the subscriber registration information is transmitted to the paging message generator. However, if the length of the display text is less than the set value, the subscriber registration information and the display text are transmitted to the paging message generator.

In operation S200 of comparing the display text length, when the second subscriber information, that is, the display text is not input, the subscriber registration information is transmitted to the call message generator.

Next, generating the first call message (S210) generates the first call message when the subscriber registration information and the display text are input together. Next, the first call message is transmitted to the called party's mobile communication terminal 90 (S220). When a response signal is received from the called mobile communication terminal 90 (S150), a call is established between the called mobile communication exchange 80 and the called mobile communication terminal 90 (S160).

Generating the second call message (S230) generates a second call message when only subscriber registration information is input.

The second call message is transmitted to the called-party mobile communication terminal 90 (S240), and when receiving a response signal from the called-party mobile communication terminal 90 (S150), the called-party mobile communication exchange terminal and the called-party mobile communication terminal 90 Call setting is completed between (S160).

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the appended claims. It will be understood that the invention may be varied and varied without departing from the scope of the invention.

1 is a block diagram schematically illustrating a mobile communication system according to an embodiment of the present invention.

FIG. 2 is a block diagram schematically illustrating an embodiment of a called-party mobile communication exchange and a visitor location register shown in FIG. 1; FIG.

3 is a block diagram schematically illustrating another embodiment of the visitor location register shown in FIG. 1;

4 is a flowchart schematically illustrating a call setup method of a mobile communication system according to an exemplary embodiment of the present invention.

5 is a block diagram schematically showing another embodiment of the called-party mobile communication exchange and the visitor location register shown in FIG.

6 is a flowchart schematically illustrating a call setup method of a mobile communication system according to another exemplary embodiment of the present invention.

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

50: calling terminal 60: calling mobile communication exchange

70: home location register 80: called party mobile communication exchange

81: subscriber information requesting unit 82: subscriber information receiving unit

83: call message generation unit 84: display text length comparison unit

90: called party terminal 100: visitor location register

110: first information storage area 120: second information storage area

130: pointer

Claims (8)

In a mobile communication system, A subscriber information manager storing display text and subscriber registration information; And Upon receiving the call request signal from the calling mobile communication exchange, the subscriber information manager requests the subscriber information, and in response to the request for the subscriber information, the called party mobile communication receiving the display text or the subscriber registration information to generate the calling message. Include exchangers, And receiving the display text and the subscriber registration information separately by receiving the first subscriber information. The method of claim 1, The subscriber information manager A first information storage area in which the subscriber registration information is stored; And And a second information storage area for storing the display text and subscriber registration information using the display text. The method of claim 1, The subscriber information manager A first information storage area in which the subscriber registration information is stored; And And a second information storage area in which the display text is stored. The method of claim 3, wherein The subscriber information manager And a pointer for matching the subscriber registration information with the display text. The method according to any one of claims 1 to 4, The called party mobile communication exchange A subscriber information request unit which requests the subscriber information to the subscriber information manager; A subscriber information receiver configured to receive subscriber information corresponding to the subscriber information request from the subscriber information manager; And And a call message generator for generating the call message by using the received subscriber information. The method of claim 5, The called party mobile communication exchange And a display text comparator configured to compare the length of the display text and include display text having a length equal to or less than a preset value in the call message. In the call setup method of a mobile communication system comprising a mobile communication switch and a subscriber information manager, a) requesting subscriber information to be called by the subscriber information manager at the mobile communication exchange; b) receiving subscriber information corresponding to the requested subscriber information; Wherein the subscriber information is first subscriber information including subscriber registration information stored in the subscriber information manager or second subscriber information including the display text and the subscriber registration information. c) generating a call message using the subscriber information received at the mobile communication exchange and transmitting the generated call message to a called-party mobile communication terminal, And receiving the second subscriber information and dividing the display text and the subscriber registration information separately. The method of claim 7, wherein Comparing the received display text length with a preset setting value; And And including the display text in the paging message when the length of the display text is less than or equal to the set value.

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