KR100816513B1 - Method and System for Providing Dialing Service by Using String of Characters Input to Mobile Communication Terminal in Virtual Private Network - Google Patents

Abstract

The present invention relates to a method and system for providing a dialing service using a string input to a mobile communication terminal in a virtual private network (VPN).

The present invention is a system for providing a dialing service using a character string input to a mobile communication terminal in a virtual private network, the wireless channel is set in response to a request for setting a wireless channel from the mobile communication terminal, and the recognizer from the mobile communication terminal And a wireless base station (BS) for receiving and transmitting a call request message including a called number assigned with a local group ID; Connected with the wireless base station, using the identifier included in the call request message, determines whether the call request message is related to a string trigger, and generates and transmits a call transfer number request message carrying the called number; A mobile switching center (MSC); And a local name database which receives the call transfer number request message, searches for and extracts the call transfer number which is the telephone number of the called terminal which is mapped to the called number, and transmits it to the mobile switching center. The present invention relates to a dialing service providing system using a string in a virtual private network.

According to the present invention, a user can join a plurality of groups, and users belonging to the same group can dial a counterpart by a name or nickname of each other, thereby providing convenience compared to conventional dialing.

String-based dialing systems, groups, hashing functions, identifiers, triggers, virtual private networks

Description

Method and System for Providing Dialing Service by Using String of Characters Input to Mobile Communication Terminal in Virtual Private Network}

1 is a block diagram schematically showing a string based dialing system according to a preferred embodiment of the present invention;

2 is a simplified illustration of the format of word dialing data of a mobile communication terminal according to a preferred embodiment of the present invention;

3 is a diagram showing a table included in a local name database according to a preferred embodiment of the present invention;

4 is a flowchart illustrating a process of processing dialing using a string in a string based dialing system according to another embodiment of the present invention;

5 is an exemplary screen for selecting a mode on a mobile communication terminal;

6 is a flowchart illustrating a process of transmitting a short message in a string based dialing system according to another embodiment of the present invention.

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

100: string based dialing system 110: mobile communication terminal

121: base station transmitter 122: base station controller

123: Mobile switching center 125: Home location register

126: SMSC

127, 162, 172: local name database

130: master name database 140: gateway

150: the Internet

The present invention relates to a method and system for providing a dialing service using a string in a virtual private network (VPN). More specifically, when a user selects a group to which a called party belongs and sends a hashing number by inputting a string related to the called party, not a phone number, to the mobile terminal, the mobile communication network maps the received hashing number. The present invention relates to a method and a system for providing a dialing service in a virtual private network (VPN) that searches for a specific incoming telephone number and performs a call connection with the retrieved incoming telephone number.

As is well known, recent advances in electronics and telecommunications engineering have resulted in a variety of mobile terminals. That is, with the rapid development of wireless communication and data processing technology, people can use not only voice calls but also wireless internet access, video communication and video message transmission using mobile communication terminals. In addition, due to the rapid dissemination of mobile communication terminals, mobile communication terminals are becoming an essential means of communication in modern life, such as a considerable amount of contact generated through human communication.

As the mobile communication terminal is used as an indispensable means of living for the modern people, the number of telephone numbers to be kept in order to communicate with the other party is also greatly increased. In the past, a user recorded and used a telephone number by using a writing instrument on a separate recording medium such as a notebook. However, as a function of storing a telephone number is implemented in a mobile communication terminal, a large number of telephone numbers and names of other parties (or business names or other user's recognition names) corresponding to the telephone number are now stored and used in the mobile terminal. Doing. The telephone number stored in the mobile communication terminal is retrieved through a predetermined search process and used for dialing.

The first method of dialing a mobile communication terminal using a stored phone number is to store a certain number of call lists (usually 10 to 30) and search the stored call list sequentially using the scroll key. The second method is to store a phone number and a memory address where information of the other party is stored, and then search for a phone number by directly inputting a specific memory address. Lastly, the third method is a method of searching for a phone number by directly inputting all or part of letters forming the name of the person to be searched.

However, the conventional telephone number search method described above has the following problems or disadvantages. The first search method is that the number of phone numbers that are classified into the recent call list and stored in the mobile communication terminal is usually limited to about 10 to 30, and it is impossible to search for a phone number other than the recently called phone number. There is a problem. Of course, it is possible to increase the number of recent call lists by increasing the memory space of the mobile communication terminal that stores the recently called phone number. However, in this case, the user must not only manipulate a lot of scroll keys to find the desired phone number. The disadvantage is that the search takes a lot of time. Therefore, it would be meaningless to increase the number of telephone numbers stored in the recent call list more than an appropriate number.

In the second method, in order to accurately input a memory address set in a telephone number to be searched for by the user, the memory address in which a person's name and telephone number are stored must be memorized one by one. However, the average user has a limit to memorize a large number of memory addresses accurately, and there is a disadvantage that a method of finding a phone number by inputting a memory address is generally not effective except for a few specific memory addresses that a user memorizes. have.

The third method is widely used as the most efficient way to search phone numbers, and Korean Patent Publication No. 2000-18534, filed September 2, 1998, and Korean Patent Publication No. 24, 1999 2001-47903, etc. are also disclosed. However, a method of searching for a phone number by inputting some or all of the letters forming the name of the other party also requires a process of inputting a Korean or English name and a phone number corresponding to the name into a mobile communication terminal and a process of searching. Therefore, there is a problem that causes inconvenience and inconvenience to the user.

In summary, a method of dialing by storing and retrieving a phone number in a mobile communication terminal must bear the inconvenience and trouble of the storage and retrieval process, and when the mobile communication terminal is lost, it is very difficult to remember the stored phone number. There is a fundamental problem in that even personal information, such as a telephone number, is to be risked. Accordingly, in order to prevent the loss of the mobile communication terminal, there is provided a method of storing and managing a phone number for each individual in a predetermined server using the Internet, but this method facilitates the management of the phone number and is performed by the mobile communication terminal. There is no suggestion on how to improve the cumbersome dialing process.

In order to solve the above-mentioned problem, the present invention, when a user selects a group to which the called party belongs and sends a hashing number by inputting a string related to the called party rather than a telephone number to the mobile communication terminal, the mobile communication network receives a hashing number. An object of the present invention is to provide a method and system for providing a dialing service in a virtual private network (VPN) that searches a specific incoming phone number mapped to a hashing number and performs a call connection with the retrieved incoming phone number.

According to a first object of the present invention, a system for providing a dialing service using a character string input to a mobile communication terminal in a virtual private network (VPN), in response to a request for establishing a wireless channel from the mobile communication terminal A wireless base station (BS) for setting up a wireless channel and receiving and transmitting a call request message including a called number to which an identifier and a local group ID are allocated from the mobile communication terminal; Connected with the wireless base station, using the identifier included in the call request message, determines whether the call request message is related to a string trigger, and generates and transmits a call transfer number request message carrying the called number; A mobile switching center (MSC); And a local name database which receives the call transfer number request message, searches for and extracts the call transfer number which is the telephone number of the called terminal which is mapped to the called number, and transmits it to the mobile switching center. Provided is a dialing service providing system using a string in a virtual private network.

According to a second aspect of the present invention, a mobile communication terminal for receiving a call request by receiving a string, a wireless base station, a mobile switching center having a string trigger function, and a call transfer number which is a called party number mapped to the string are searched for. A system comprising a local name database to transmit, the method comprising: providing a dialing service according to the character string input to the mobile communication terminal in a virtual private network, wherein the mobile switching center (a) transmits from the mobile communication terminal; Receiving a call request message including a called party to which a recognized identifier and a local group ID are assigned; (b) determining whether the call request message is related to the string trigger by using an identifier included in the called number; (c) if the call request message is about the string trigger, query the local name database for the call transfer number mapped to the local group ID and hashing number included in the called number; Receiving; And (d) performing a call processing procedure to a called terminal through the wireless base station using the call transfer number received from the local name database. Provide the method of providing.

According to a third object of the present invention, a method for performing call processing by hashing a string input to a mobile communication terminal in a virtual private network, comprising: (a) receiving the string on the mobile communication terminal; (b) hashing to a hashing digit assigned to the local group ID corresponding to the string and converting the hashing number; (c) generating a called number to which the identifier corresponding to the character string and the local group ID are assigned; And (d) hashing a character string input to a mobile communication terminal in a virtual private network, comprising transmitting the called number to a call request message.

According to a fourth object of the present invention, there is provided a system for providing a short message service (SMS) service using a string input dialing to a mobile communication terminal in a virtual private network, the mobile communication terminal receiving the short message transmitted from the mobile communication terminal. A wireless base station (BS) for transmitting an SMS transmission request message including a called party to which an identifier and a local group ID are allocated from the mobile station; The SMS transmission request message is received, a call forwarding number request message is transmitted using the called number included in the SMS sending request message, and the short message is accumulated and transmitted to the called terminal using the received call forwarding number. Short Message Service Center (Store and Forward) (SMSC); And a local name database that receives the call transfer number request message, extracts the called number, retrieves and extracts the mapped call transfer number, and transmits it to the short message service center. Provides an SMS service providing system using a string input dialing to the terminal.

According to a fifth object of the present invention, a mobile communication network including a mobile terminal, a wireless base station, and a mobile switching center receiving a text message and a short message and requesting a Short Message Service (SMS) service, and a short message receiving and transmitting the short message It includes a service center (SMSC) and a local name database for searching and transmitting a call forwarding number, which is a called party's telephone number mapped to the string, to provide an SMS service according to the string input to the mobile communication terminal in a virtual private network. The short message service center may include: (a) receiving an SMS transmission request message including a called party assigned an identifier and a local group ID transmitted from the mobile communication terminal; (b) recognizing the called number and transmitting a call transfer number request message to the local name database; (c) receiving a response message including the call transfer number from the local name database; And (d) accumulating and transmitting the short message to a called terminal according to the received call transfer number. The method of providing an SMS service using string input dialing to a mobile communication terminal in a virtual private network is provided. .

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

First of all, in adding reference numerals to the components of each drawing, it should be noted that the same reference numerals are used as much as possible even if displayed on different drawings. In addition, in describing the present invention, when it is determined that the detailed description of the related well-known configuration or function may obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a block diagram schematically illustrating a string-based dialing system 100 in a virtual private network (VPN) according to a preferred embodiment of the present invention.

String-based dialing system 100 according to a preferred embodiment of the present invention is a mobile communication terminal 110, base station transmitter 121, base station controller 122, mobile switching center 123, home location register 125, short message The service center 126, the local name database 127, the master name database 130, and the like may be included. The string-based dialing system 100 according to the preferred embodiment of the present invention is connected to an Internet Protocol (IP) network such as the Internet 150 through the gateway 140.

The mobile communication terminal 110 according to the preferred embodiment of the present invention converts a string input from the user into a number string of numbers in the string-based dialing system 100 according to the preferred embodiment of the present invention, and recognizes the recognized number in the converted number. (Identifier) and the called party number assigned to the local group ID to which the called party belongs, are carried in the call request message and sent. In general, a call processing protocol between a mobile communication terminal and a base station / exchange station in a wired / wireless communication system transmits and receives a number such as a telephone number and thus cannot process a string. Therefore, the mobile communication terminal 110 according to the preferred embodiment of the present invention converts the input string into a numeric string using a built-in hashing function. Here, the hashing function is a one-way function and is a kind of message digest function that is not performed in the reverse direction.

2 simply shows the format of the word dialing data of the mobile communication terminal 110 according to the preferred embodiment of the present invention.

As shown in FIG. 2, the word dialing data of the mobile communication terminal 110 is set for each mobile communication terminal 110. The word dialing data may include a data type field, a local group ID field, a group name field, a hashing digit field, an identifier field, and the like.

Here, the group name field is a field in which a character string input in a procedure of registering a character string through the character string dialing system 100 is stored, and user representative information such as a real name and an example name of the user is stored. The string stored in the group name field is different for each user in the group, and has a unique characteristic.

According to a preferred embodiment of the present invention, a process of transmitting a call request message by inputting a string to the mobile communication terminal 110 will be described in more detail as follows. The mobile communication terminal 110 is equipped with a string call processing program that can input a string instead of a phone number for a call connection in a flash memory. Therefore, a user who wants to make a call connection loads a string call processing program by operating a key button and inputs a string using the loaded string call processing program. Here, the string call processing program may provide a GUI (Graphic User Interface) environment for inputting a string to the user, and performs a function of displaying the input string in real time. In addition, when the input key value is a numeric string instead of a string, the string call processing program passes the input numeric string to the control processor so that normal call processing may be performed.

When the string input is terminated and the key button related to the call connection such as the "Send" button is pressed, the string call processing program detects the press of the call button and uses the hashing function built into the mobile terminal to number the string. To a column (hereinafter referred to as a hashing number). In addition, the string call processing program adds a specific identifier to the front end of the hashing number converted by the hashing function, searches for a group to which the called party belongs by referring to the word dialing data of the mobile communication terminal 110, The group ID is added and sent as a called number.

Here, the recognizer is used to inform the communication network that the called number sent from the mobile communication terminal 110 is a number for character string dialing. Therefore, information on the identifier for string dialing is stored in advance in the switch, which is a call processing apparatus installed in the communication network. Such an identifier is called a trigger. Generally, a trigger refers to an operation that is performed automatically when a predetermined condition is met or a certain operation is performed by the database. For example, if 'Yoon Sang Ho' belonging to the 'Widerden' group is input to the 017-789-1000 terminal, a hashing number such as '12345' that matches the hashing digit is generated using a hashing function, and the generated hashing number is A forwarding number such as '070-9288-1-12345' with an identifier of 070-9288 and a local group ID 1 added to the front end is transmitted to the communication network.

Meanwhile, according to a preferred embodiment of the present invention, the string call processing program may generate a hashing number using a hashing function built in the mobile communication terminal, but more preferably, a hashing number is built in a specific hashing function by itself. You can also create This is to increase the number of strings that can be represented by hashing numbers because the types of strings that can be input are very wide. Also, as can be seen with reference to FIG. 2, since the word dialing data has information of how many digits to hash for each local group ID, the number of hashing digits can be selected to reduce the number of collisions when hashing for each group.

On the other hand, the mobile communication terminal 110 stores the outgoing call record using a string in a separate phone list such as a 'outgoing call list' rather than the basic 'outgoing call list' and retrieves a 'string call'. Program 'is installed. In addition, the string call management program provides a function of storing a string provided through a so-called 'lettering' service in a 'string incoming call list' in case of a call reception. Here, the lettering service is a service in which the name or nickname designated by the caller is displayed on the called terminal when the incoming call is received. For example, a caller inputs a caller's phrase, such as "Hani" and a mother, "" Maya ", etc., is displayed on the called party's mobile terminal. Therefore, the string call management program may store and retrieve the received phrase as a string by adding a predetermined tag to the phrase provided through the lettering service when the call is received, indicating a string indicated by the other party. It also provides the ability to do so.

Mobile communication terminal 110 according to a preferred embodiment of the present invention is a PDA (Personal Digital Assistant), cellular phone, PCS (Personal Communication Service) phone, hand-held PC (Hand-Held PC), CDMA-2000 (1X, 3X) Phones, wideband CDMA (WCDMA) phones, dual band / dual mode phones, global standard for mobile (GSM) phones, mobile broadband system (MBS) phones, notebook computers, and the like. Here, MBS phone refers to a mobile phone to be used in the fourth generation system currently being discussed.

In addition, the calling device for performing dialing using a string input, which is the technical idea of the present invention, is not limited to the mobile communication terminal 110, and may include a personal computer, a landline telephone, and the like, if a string input and dialing are possible. have. For personal computers or landline phones, the string call processing program described above should be installed. In addition, if a computer is used, voice over internet protocol (VoIP) communication may be possible.

A base transceiver subsystem (BTS) 121 and a base station controller (BSC) 122 are devices that constitute a base station (BS). The base station transmitter 121 receives a radio channel setting request message, a call request message including a called party number assigned with a recognizer and a local group ID, and transmits the request to the base station controller 121 from the mobile communication terminal 110. According to the radio channel setting command from the base station controller 122, a radio channel is set with the mobile communication terminal 110.

The base station controller 122 controls the base station transmitter 121, sets and releases radio channels for the mobile communication terminal 110, controls transmission output of the mobile communication terminal 110 and the base station transmitter 121, and soft cell-off between cells. It determines whether to perform soft handoff and hard handoff, transcoding and vocoding, and operation and maintenance functions for wireless access network.

The mobile switching center 123 performs a control function for enabling wireless base stations to operate efficiently and an interworking function with an electronic exchange installed in a public switched telephone network (PSTN). The mobile switching center 123 performs basic and additional service processing, incoming and outgoing call processing of a subscriber, location registration and handoff procedures, and interworking with other networks.

Meanwhile, according to the exemplary embodiment of the present invention, the mobile switching center 123 may have a function of recognizing and processing the identifier of the called number transmitted from the mobile communication terminal 110 and received through the wireless base station. That is, the mobile switching center 123 may recognize the recognizer set in the called number, confirm that the recognizer is a string dialing recognizer, and then perform a corresponding post-processing procedure. Here, the post-processing procedure confirms that it is a string dialing identifier, and the mobile switching center 123 transmits the call forwarding number request message to the local name database 127 using the called number (for example, '070-9288-1-12345') as a message parameter. Means to send.

Meanwhile, the base station transmitter 121, the base station controller 122, and the mobile switching center 123 according to the embodiment of the present invention are inter-standard (IS) -95 A / B, CDMA 2000 1X, CDMA 2000 1x EV-DO (Evolution). Data Only) / EV-DV (Evolution-Data and Voice), CDMA 2000 3X, WCDMA, GSM, and the fourth generation of mobile communication systems, such as the ALL-IP network has a configuration that can support.

The home location register (HLR) 125 is called a HLR 125 and performs functions such as registration recognition, registration deletion, and location check of the mobile communication terminal 110. In addition, when the HLR 125 receives the location information request signal of the mobile communication terminal 110 from the short message service center 126 described below, the HLR 125 searches for a stored database to cover the area where the mobile communication terminal 110 is located. Check and provide wireless base station address information.

The Short Message Service Center (SMSC) (hereinafter referred to as SMSC) 126 receives a short message transmission request from the mobile communication terminal 110 through the wireless base station and the mobile switching center 123, and then receives an HLR ( 125) to check the address information of the wireless base station in charge of the called mobile communication terminal to store and forward a short message (Store and Forward).

Meanwhile, the SMSC 126 according to the preferred embodiment of the present invention checks the identifier included in the received called number when the short message transmission request is generated through the string dialing method, and confirms that the short message is transmitted using the string dialing. SMSC 126 confirms that the short message is transmitted by using string dialing, and then performs a procedure after requesting a call transfer number to the local name database 127 similarly to the mobile switching center 123 described above.

Local Name Database 127 according to a preferred embodiment of the present invention, when receiving a call forwarding number request message from mobile switching center 123 and SMSC 126, searches for a table and includes a hashing number included in the called number. Extracts a call diversion number mapped to and transmits it to the corresponding device.

3 is a diagram illustrating a table included in the local name database 127 according to a preferred embodiment of the present invention.

FIG. 3A is an individual group ID length table, FIG. 3B is a group ID conversion table, and FIG. 3C is a group ID table.

As shown in FIG. 3, the individual group ID length table includes a phone number field and a group ID length field, and the group ID conversion table includes an identification number field, a local group ID field, a global group ID field, and the like of the mobile communication terminal. The group ID table includes a global group ID field, a string field, a hashing number field corresponding to a string, a call transfer number field, and the like.

Here, the hashing number is a number obtained by converting a string input in a string input procedure using a hashing function, and is composed of a plurality of numeric strings. Meanwhile, the hashing number stored in the local name database 127 is generated by a hashing function embedded in the master name database 130, and embedded in the hashing function embedded in the master name database 130 and the mobile communication terminal 110. Hashing functions are equivalent.

In addition, the call transfer number is a telephone number of a mobile communication terminal or a landline telephone of a registered user, and is mapped to a hashing number.

When the local name database 127 receives the call forwarding number request message including the called number (for example, '070-9288-1-12345'), the local group ID corresponding to the outgoing phone number is first referred to by referring to the group ID length table for each individual. Check the number of digits in. Next, check that the global group ID corresponding to '1' is '10, 000,000 'by referring to the group ID conversion table and refer to the group ID table' 017-289 'corresponding to the numbers '10, 000,000' and '12345'. -1000 'is confirmed.

The master name database 130 according to a preferred embodiment of the present invention manages a plurality of local name databases 127, 160, 170, and registers, deletes, and changes strings for a string dialing service according to an embodiment of the present invention. Handle the management functions of.

On the other hand, the local name database 127, 160, 170 and the master name database 130 according to a preferred embodiment of the present invention can be linked to the subscriber information of the wired and wireless Internet server. That is, a string-based dialing according to a preferred embodiment of the present invention may be utilized by interworking with IDs or nicknames such as Internet cafes, which are widely used recently, and corresponding phone number information stored therein.

4 is a flowchart illustrating a process of processing dialing using a string in the string based dialing system 100 according to another embodiment of the present invention.

The mobile communication terminal 110 according to the preferred embodiment of the present invention is capable of selecting one of a general telephone number mode, a word dialing mode, and a virtual private network (VPN) word dialing mode. A user who wants to dial using a string selects a group while selecting a VPN word dialing mode on the screen as shown in FIG. 5 (S400).

Next, the user of the mobile communication terminal 110 loads the string call processing program installed in the mobile communication terminal 110, switches the mobile communication terminal 110 to the VPN word dialing mode, and inputs a text string (S402). . The text string input in step S402 is displayed on the screen of the mobile communication terminal 110 in real time. After the user inputs the string, the user presses a button related to call connection (S404).

The string call processing program determines whether the key values input in step S404 are key values associated with string input (S406). If it is determined in step S406 that the character string is input, the character string call processing program converts the input character string into a hashing number (S408). In addition, the string call processing program generates a called number assigned to a predetermined identifier indicating a string trigger and a local group ID to which the called party belongs in front of the converted hashing number.

The mobile communication terminal 110 requests the wireless base station to set the wireless channel to the wireless base station when a sequence of numbers instead of a string input is input in step S406 or generation of the called number in step S408, and a call request message containing the called number is received. Transmit to a wireless base station (S410). Upon receiving the radio channel setting request signal, the radio base station establishes a radio channel with the mobile communication terminal 110 (S412), extracts the called number from the received call request message, connects a line with the mobile switching center 123, and receives the incoming call. The call request message carrying the number is transmitted (S414).

The mobile switching center 123 extracts the called number included in the call request message received from the wireless base station and determines whether it corresponds to the string trigger condition according to the embodiment of the present invention (S416).

If the mobile switching center 123 determines that it does not correspond to the string trigger condition as a result of the determination in step S416, the mobile switching center 123 processes the general telephone number and performs a call processing procedure (S418). If the mobile switching center 123 determines that the string trigger condition corresponds to the determination result of step S416, the mobile switching center 123 transmits a call transfer number request message for requesting the call transfer number to the local name database 127 (S420). Here, the call transfer number request message includes the called number.

The local name database 127 receiving the call transfer number request message from the mobile switching center 123 searches for and extracts the call transfer number mapped to the received called number (S422), and moves the extracted call transfer number to the response message. It transmits to the switching center 123 (S424). The mobile switching center 123 performs call processing with the call transfer number included in the received response message (S426). The mobile switching center 123 performs call processing through the wireless base station, and when the called mobile communication terminal answers, a call is started with the calling mobile communication terminal (S428).

6 is a flowchart illustrating a process of transmitting a short message in the string based dialing system 100 according to another embodiment of the present invention.

The sender loads the string call processing program embedded in the calling mobile communication terminal, inputs the string and the short message for the called party, and transmits it (S600). Of course, the mobile communication terminal applies a hashing function to the input string as described in step S408 of FIG. 4 to convert it to a hashing number, and generates a called number with the identifier and the local group ID added to the front of the hashing number. . Therefore, the short message sent from the calling mobile terminal includes the called number. The originating wireless base station and the mobile switching center receive the short message transmitted from the calling mobile communication terminal, and transmits the received short message to the calling SMSC to request a short message transmission (S602). Upon receiving the short message transmission request, the calling SMSC transmits a response message to the calling wireless base station and the mobile switching center (S604), and the calling wireless base station and the mobile switching center transmit a response message to the calling mobile terminal (S606). .

On the other hand, the originating SMSC extracts the called number included in the short message received in step S602 to confirm the recognizer, and requests the call transfer number to the local name database 127 (S608). The local name database 127, which has received the call transfer number, extracts the call transfer number mapped to the hashing number included in the received called number and transmits it to the calling SMSC (S610).

The calling SMSC receiving the call transfer number includes the received call switching number in the short message and makes a short message transmission request to the called SMSC (S612), and receives a response message from the called SMSC (S614). The called SMSC requests transmission of the short message received at the called base station and the mobile switching center (S616), and the called wireless base station and the mobile switching center transmits the received short message to the called mobile terminal (S618). When the called-party mobile communication terminal receives the short message, it generates a response message and transmits it to the called-side wireless base station and the mobile switching center (S620), and the called-side wireless base station and the mobile switching center transmits the response message to the called-side SMSC (S622). .

Meanwhile, although FIG. 6 describes the case where two SMSCs are involved in the transmission of the short message, the short message may be transmitted only to the calling SMSC, the calling base station and the mobile switching center.

In addition, although FIG. 6 describes only a short message service (SMS) for transmitting a short message, a multimedia messaging service (MMS) for transmitting a multimedia message as well as a short message, a unified messaging service ( UMS (Unified Messaging Service) can be provided through the same process.

The above description is merely illustrative of the present invention, and those skilled in the art to which the present invention pertains may various modifications without departing from the essential characteristics of the present invention. Accordingly, the embodiments disclosed herein are not intended to limit the present invention but to describe the present invention, and the spirit and scope of the present invention are not limited by these embodiments. It is intended that the scope of the invention be interpreted by the following claims, and that all descriptions within the scope equivalent thereto shall be construed as being included in the scope of the present invention.

 As described above, the dialing process of storing and retrieving a phone number in a conventional terminal is cumbersome and has a problem of being very difficult when the terminal is lost. According to the present invention, the phone number of the other party is stored separately in the terminal or There is an advantage that the dialing can be conveniently performed by inputting the other's name, nickname, etc. without memorizing. In addition, by performing such dialing for each group subscribed to by the user, there is an advantage in that the length of the called number sequence transmitted from the mobile communication terminal can be reduced.

In addition, the user can subscribe to multiple groups, such as a community such as cafes on the Internet, and within the subscribed group can dial the other party by the name or nickname of each other, thereby creating a virtual private network effect. That is, users who belong to the same group can dial each other by their name or nickname, whereas users who do not belong to a specific group can dial the other party by name or nickname in the group. There is an effect that the privacy of the user is enhanced.

In addition, since the subscribed group information and information such as the name or nickname to be used are all stored in the central system, it is possible to dial the user by the name regardless of the change of the terminal or the telephone number. The advantage is improved connectivity.

Claims (24)

A system for providing a dialing service using a specific character string input to a mobile communication terminal in a virtual private network (VPN), In response to a radio channel setting request from the mobile communication terminal, a radio channel is set, and a call request message including a called number with an identifier and a local group ID assigned to a hashing number corresponding to the character string is received from the mobile communication terminal. A wireless base station (BS) for receiving and transmitting; Connected with the wireless base station, using the identifier included in the call request message, it is determined whether the call request message relates to a string trigger indicating whether the call is a dialing using a string, and the called number is A mobile switching center (MSC) for generating and sending a carried call transfer number request message; And Receiving the call transfer number request message, using the hashing number included in the called number and the local group ID to search and extract the call transfer number, which is the telephone number of the called terminal, local to transmit to the mobile switching center Name database Dialing service providing system using a string in a virtual private network comprising a. The method of claim 1, A mobile communication terminal converting the character string into a string using a hashing function, generating the called number assigned to the hashing number with the identifier and the local group ID, and transmitting the called number to the call request message. Dialing service providing system using a string in a virtual private network, characterized in that it further comprises. The method of claim 2, And the allocation of the identifier and the local group ID is performed by referring to word dialing data of the mobile communication terminal. The method of claim 3, wherein The word dialing data may include one or more of a data type field, a local group ID field, a group name field, a hashing digit field assigned to the local group ID, and an identifier field. system. The method of claim 1, The local name database is a dialing service providing system using a string in a virtual private network, characterized in that it is linked to the subscriber information of the wired and wireless Internet server. The method of claim 1, The string is a string of one or more characters, and is unique within the group. Dialing service providing system using a string in a virtual private network. delete The method of claim 1, The mobile communication terminal receives the string, displays the input string in real time, converts the input string into a hashing function by applying the input string to a hashing function, and receives the caller assigned the identifier and the local group ID. System for providing a dialing service using a string in a virtual private network, characterized in that the stored string call processing program for generating a number and sent to the call request message. The method of claim 8, The string call processing program automatically embeds the hashing function or a separate hashing function built in the mobile communication terminal, and converts the input string into a hashing number. Provide system. The method of claim 1, The local name database is a dialing service providing system using a string in a virtual private network, characterized in that it comprises at least one of a group ID length table, a group ID conversion table, and a group ID table for each subscriber. The method of claim 10, The group ID conversion table may include at least one of an identification number field, a local group ID field, and a global group ID field of a mobile communication terminal. The method of claim 10, And the group ID table includes one or more of a global group ID field, a string field, a hashing number field corresponding to the string and a call transfer number field. The method of claim 1, The text message is stored in the text outgoing call list memory area of the mobile communication terminal, or when the incoming event occurs in the mobile communication terminal and text information about the caller is provided to the mobile communication terminal, the text information is stored in the text information. A system for providing dialing services using character strings in a virtual private network, characterized in that a character string call management program is allocated to assign a predetermined tag indicating that the character is a character string telephone number and to store the character string in a character string receiving telephone list memory area. Including a mobile communication terminal for receiving a call request, a wireless base station, a mobile switching center having a string trigger function, and a local name database for searching and transmitting a call forwarding number which is a called party's telephone number mapped to the string. In the system configured, a method for providing a dialing service according to the character string input to the mobile communication terminal in a virtual private network (VPN), the mobile switching center, (a) receiving, from the mobile communication terminal, a call request message including a called number with an identifier and a local group ID assigned to a hashing number corresponding to the character string; (b) determining whether the call request message is related to the string trigger indicating whether the call request message is dialing using a character string using an identifier included in the called number; (c) if the call request message is about the string trigger, query the local name database for the call transfer number mapped to the local group ID and hashing number included in the called number; Receiving; And (d) performing a call processing procedure to the called terminal through the wireless base station using the call transfer number received from the local name database; Dialing service providing method using a string in a virtual private network comprising a. The method of claim 14, The mobile communication terminal includes a general telephone number mode, a word dialing mode, and a virtual private network (VPN) word dialing mode. The method of claim 15, Before the mobile communication terminal transmits the call request message, the mobile communication terminal selects the VPN word dialing mode and selects a group together when selecting the VPN word dialing mode. How to provide dialing service. In a method of performing a call processing by hashing a string input to a mobile communication terminal in a virtual private network (VPN), (a) receiving the character string on the mobile communication terminal; (b) hashing to a hashing digit assigned to a local group ID corresponding to the string and converting the hashing number; (c) generating a called number to which a recognizer and the local group ID are assigned to the hashing number; And (d) sending the called number on a call request message; Method for performing call processing by hashing the string input to the mobile communication terminal in a virtual private network comprising a. The method of claim 17, The hashing is a character string input to a mobile communication terminal in a virtual private network, characterized in that the built-in hashing function or a separate hashing function built in the mobile communication terminal itself to convert the input string into the hashing number. How to hash and perform call processing. A system for providing a Short Message Service (SMS) service using string input dialing to a mobile communication terminal in a virtual private network (VPN), A wireless base station (BS) for receiving and transmitting a short message and an SMS transmission request message including a called number with an identifier and a local group ID assigned to a hashing number corresponding to the character string from the mobile communication terminal; The SMS transmission request message is received, a call forwarding number request message is transmitted using the called number included in the SMS sending request message, and the short message is accumulated and transmitted to the called terminal using the received call forwarding number. Short Message Service Center (Store and Forward) (SMSC); And A local name database that receives the call transfer number request message, retrieves and extracts the call transfer number using the hashing number and the local group ID, and sends the call transfer number to the short message service center; SMS service providing system using a string input dialing to the mobile communication terminal in a virtual private network comprising a. The method of claim 19, A mobile communication converting the character string into the hashing number using a hashing function, generating the called number assigned the identifier and the local group ID to the hashing number, and sending the string to the SMS transmission request message and transmitting the message. terminal SMS service providing system using a string input dialing to the mobile communication terminal in a virtual private network characterized in that it further comprises. The method of claim 19, The short message service center reads the identifier to determine whether the called number is a string trigger for performing a dialing using the string. The short message service center uses string input dialing to a mobile communication terminal. SMS service provision system. The method of claim 19, The system provides the mobile communication terminal with a multimedia messaging service (MMS) service and a Unified Messaging Service (UMS) service through the string input dialing to the mobile communication terminal. SMS service provision system using string input dialing in. A mobile communication terminal including a text message and a short message requesting a Short Message Service (SMS) service, a mobile communication network including a wireless base station and a mobile switching center, a short message service center (SMSC) receiving and transmitting the short message, and the text string. It is configured to include a local name database for retrieving and forwarding the call transfer number of the called party's telephone number mapped to provide an SMS service according to the string input to the mobile communication terminal in a virtual private network (VPN) As a method, the short message service center, (a) receiving an SMS transmission request message including a called number to which a recognizer and a local group ID are assigned to a hashing number corresponding to the character string from the mobile communication terminal; (b) recognizing the called number and transmitting a call transfer number request message to the local name database; (c) receiving from the local name database a response message including the hashing number included in the call call request message and the call transfer number retrieved using the local group ID; And (d) accumulating and transmitting the short message to a called terminal according to the received call transfer number; SMS service providing method using a string input dialing to the mobile communication terminal in a virtual private network comprising a. The method of claim 23, wherein in step (b), The called number is a predetermined identifier indicating that a string trigger is assigned to a hashing number generated by applying the string input to the mobile communication terminal to a built-in hashing function. SMS service providing method using string input dialing to a mobile communication terminal in a virtual private network.

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