KR20090001145A - Wireless communication method and system for determining text message transfer protocol through validation of message length and network property - Google Patents

Abstract

A radio communications method and the system determining the character message transmission method through the confirmation of the network property and the message length. In net in connection with the text message transmitted from the originating mobile, the length of the message and the network property of the received terminal are confirmed. AN SMS gateway(213) operates with the SMSC (Short Message Service Center)(211) receiving the sending request of the text message to the received terminal(240) from the originating mobile(230). The SMS gateway receives the delivered sending request from SMSC. The length of the text message and the network property of the received terminal are confirmed in response to the sending request. The delivery style to the received terminal of the text message is determined. The SMS gateway comprises the, message length calculation unit, and caller identifier confirmation device and delivery style decision unit.

Description

Wireless Communication Method and System for Determining Text Message Transfer Protocol Through Validation of Message Length and Network Property}

1 is a diagram illustrating a general text message service.

2 is a view for explaining a wireless communication system according to an embodiment of the present invention.

3 is a diagram for explaining an example in which a text message is normally transmitted in a different manner even if the network attribute of the called terminal exceeds the message length.

4 is a detailed block diagram of an SMS gateway according to an embodiment of the present invention.

5 is a flowchart illustrating a method of providing a text message service according to an embodiment of the present invention.

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

SMSC: Short Message Service Center

LMSC: Long Message Service Center

MMSC: Multimedia Message Service Center

The present invention relates to a method of transmitting a text message in a wireless communication system, and in particular, in connection with a text message transmitted from an originating terminal, a text message delivery method is determined by checking the length of the message and a network attribute of the called terminal in a network. In some cases, the present invention relates to a wireless communication method and system capable of converting and transmitting a text message in a manner in which the called terminal can normally process a text message of a corresponding length.

1 is a diagram illustrating a general text message service. Today, various types of terminal-to-device text messaging services can be provided by using an integrated network such as a wireless communication network or the Internet. Not only can text messages be exchanged between mobile terminals, but also text messages can be exchanged between a mobile terminal and a computer terminal connected to the web.

SMS (Sohort Message Service) messages are limited to certain bytes in length. When creating an SMS message exceeding the limit length in a mobile terminal or a web server supporting text message transmission, when a transmission emulator in the terminal or server transmits the message by splitting or converting the message into a multimedia message service (MMS). There is.

However, even if the SMS message is transmitted in this manner, text messages sent from the calling terminal may not be delivered to the called terminal because the length of the SMS message may be different depending on the attributes of the wireless network or the policy of the operator. Is not happening. For example, in the case of KTF, the SMS message has a limited length of 140 bytes in a WCDMA network and 90 bytes in a CDMA network. Therefore, if the calling terminal is a WCDMA subscriber station and the called terminal is a CDMA subscriber station, the SMS message is used even if the same operator network is used. There is a problem that does not receive normally. In addition, since SKT and LGT support up to 80 bytes of SMS messages, SMS messages are not normally received even when the message is sent to other third party networks. In addition, as the GSM network supports up to 160 bytes of SMS messages in overseas networks, the length limit for supporting SMS messages between overseas and domestic networks is different. Therefore, SMS messages from overseas networks to domestic networks using overseas roaming services are used. There is a problem that the message is not received normally even when sending.

Accordingly, an object of the present invention is to solve the above-described problem, and an object of the present invention is to provide a text message sent regardless of its length even when a calling terminal and a called terminal use a wireless communication network or an interworking carrier network having different attributes. In order to be provided to the destination terminal, in relation to the text message transmitted from the originating terminal, the length of the message and the network properties of the destination terminal are determined in the network to determine a text message delivery method, and then the message is normally delivered to the destination terminal. To provide a wireless communication method and system that can be.

Another object of the present invention is to determine a text message transmission method supported by a called terminal in a network, and in some cases, when the length of a text message supported between the calling terminal and the called terminal is different, the called terminal has a character of the corresponding length. The present invention provides a wireless communication method and system capable of converting and transmitting a text message in a manner that can normally process a message.

First, to summarize the features of the present invention, a method for servicing a text message according to an aspect of the present invention for achieving the above object of the present invention, sending a text message received from the originating terminal in the network to the destination terminal; In response to the request, the length of the text message and the network attributes of the called terminal are checked, and then the delivery method of the text message to the called terminal is determined.

The delivery method includes any one or more protocols of SMS, LMS, or MMS, and after determining the delivery method, the text message is transmitted to the called terminal according to the delivery method.

The transmitting may include transmitting the text message to the called terminal according to a message transmitted from the calling terminal when the length of the message processing according to the network attribute of the called terminal is equal to or greater than the length of the text message. Or when the length of the message processing according to the network attribute of the called terminal is smaller than the length of the text message, after converting the text message into another method having a longer message length than the message method transmitted from the calling terminal, the called terminal Can be sent to.

For example, the text message is an SMS message that is roamed and received in a domestic or overseas network, and in the transmitting step, when the text message is delivered to the SMSC according to the delivery method, the SMSC forwards the text message to the incoming message. It can be transmitted to the terminal. Alternatively, the text message is an SMS message that is roamed and received in a domestic or foreign network, and in the transmitting step, when the text message is delivered to the LMSC or MMSC according to the delivery method, the LMSC or MMSC corresponds to the text message. The protocol can be converted and transmitted to the called terminal.

In this case, the text message may include an indicator indicating that the length limit is exceeded and may be delivered to the LMSC or MMSC, and either of the LMSC or MMSC converts the text message to a corresponding protocol and transmits the text message to the called terminal according to the indicator. Can be.

The network attribute may be obtained based on subscriber station information including information indicating which network is used for CDMA or WCDMA managed in a database of a subscriber management server.

Accordingly, when the length of the text message is larger than the length of the SMS message supported in the CDMA or WCDMA network with respect to the called terminal, the text message is converted into the LMS or MMS protocol in the CDMA or WCDMA network and then transmitted. Can be.

In addition, the wireless communication system for serving a text message according to another aspect of the present invention for achieving the object of the present invention as described above, SMS interworking with the SMSC receiving a request to send a text message from the originating terminal to the destination terminal And a gateway, wherein the SMS gateway receives the dispatch request delivered by the SMSC, checks the length of the text message and the network attribute of the called terminal in response to the dispatch request, and then the called terminal of the text message. It is characterized in that for determining the delivery method.

The SMS gateway may include: a message length calculator configured to calculate a length of the text message according to the dispatch request; A subscriber information confirming unit for querying a network attribute of the called terminal to a subscriber management server according to the dispatch request, and receiving a network attribute of the called terminal extracted from the database by the subscriber management server; And determining at least one protocol of SMS, LMS, or MMS as a delivery method to the called terminal according to the length of the text message calculated by the message length calculating unit and the network attribute of the called terminal to which the subscriber information confirming unit has responded. It may include a delivery method determination unit.

In addition, the SMS gateway, when the text message is delivered to the SMSC, LMSC, or MMSC according to the determined delivery method, and the text message is delivered to the LMSC or MMSC, indicating that the text message exceeds the limit length. It may further include a message delivery unit for transmitting to the LMSC or MMSC, including an indicator, wherein any one of the LMSC or MMSC according to the indicator may convert the text message to the corresponding protocol to be transmitted to the called terminal.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and the contents described in the accompanying drawings, but the present invention is not limited or limited to the embodiments. Like reference numerals in the drawings denote like elements.

2 is a diagram illustrating a wireless communication system 200 according to an embodiment of the present invention. 2, the wireless communication system 200 according to an embodiment of the present invention includes a base station 220 connected to the core network 210, the source terminal 230 and the destination terminal 240 is a core network According to the call processing control of the 210 and the base station 220, a voice call, a video call, an SMS transmission, or a multimedia data service may be provided.

The core network 210 may include both a public network connecting a circuit channel or an internet network connecting a data channel. In addition, the core network 210 may also include a portable internet network. The core network 210 includes a Short Message Service Center (SMSC) 211 for SMS message call processing, a Long Message Service Center (LMSC) for LMS message call processing, and a Multimedia Message Service Center (MMSC) for MMS message call processing. In addition, the core network 210 may include various servers linked with mobile communication services, such as a subscriber management server 250 that manages subscriber information and various application servers 260 that provide multimedia services. .

In FIG. 2, the base station 220 relays the terminals 230/240 to receive voice calls, video calls, SMS transmissions, or multimedia data services in a CDMA or WCDMA network. Although not shown in FIG. 2, a base station controller (BSC) for CDMA network control or a radio network controller (RNC) for WCDMA network control may be included between the base station 220 and the core network 210. The RNC or the BSC manages radio resources and performs a handoff function for supporting cell-to-cell mobility to control communication between the terminals 230 and 240 so that circuit traffic or IP protocol packets can be obtained. Traffic (packet traffic) and the like can be properly transmitted and received to the destination mobile terminal, landline phone, application server, etc. of the location. In addition, although not shown in FIG. 2, the core network 210 includes a switch that provides a subscriber line switching service during call processing such as voice call, video call, and SMS transmission in a 2G CDMA or 3G WCDMA network. 230/240 may register its location in the home location register (HLR) in the core network 210 through communication with a nearby exchange to receive a mobile communication service, and the HLR in the VLR (Visitor Location Register) of the exchange. Information of the subscriber station received from is managed. Accordingly, the terminals 230/240 may support mobility between cells, and may receive a mobile communication service through an exchange even in any region.

Here, the terminal 230/240 may be not only a cellular phone, a personal communications services phone (PCS phone), a synchronous / asynchronous International Mobile Telecommunication-2000 (IMT-2000) terminal, but also a mobile. Notebook PCs, desktop PCs, Palm Personal Computers, PDAs (PDAs), Smart Phones, WAP phones (Wireless application protocol phones), Mobile It means all communication devices, such as game play (mobile play-station) comprehensively.

In particular, in the present invention, even if the length of the text message (for example, SMS message) including the SMS gateway 213 connected to the core network 210 is limited according to the network's attributes or the operator's policy, the calling terminal is different. The call process is relayed so that the text message transmitted from the 230 can be normally delivered to the called terminal 240.

In the present invention, when the calling terminal 230 sends a text message to the called terminal 240, the SMSC 211 receives it and delivers it to the SMS gateway 213. The text message sending request of the calling terminal 230 may include a calling number, a called number, contents of a text message, and the like. As such, the SMS gateway 213 interworking with the SMSC 211 checks the length of the text message transmitted from the SMSC 211 in order to determine the delivery method of the corresponding text message to the called terminal 240, and furthermore, the called terminal ( Check the network properties of 240). The network attribute of the called terminal 240 may be obtained based on subscriber terminal information including information indicating which network, CDMA or WCDMA, is managed in the database of the subscriber management server 250. The SMS gateway 213 may transmit and display a normal message in the destination terminal 240 based on the length of the corresponding text message and the network attributes of the destination terminal 240, for example, SMS, LMS, MMS, or the like. The protocol can be determined. In the case of SMS, up to 80 bytes (40 characters / 80 characters) or 90 bytes (45 characters / 90 characters) depending on the carrier, 2000 bytes (1000 characters / 2000 characters) for LMS and MMS I) and, in particular, in case of MMS, can support multimedia data such as image, video, file.

When the length of the text message processing according to the network attribute of the called terminal 240 is greater than or equal to the length of the text message to be transmitted, the SMS gateway 213 transmits the corresponding text message from the calling terminal 230 (SMS). As a result, the text message received from the SMSC 211 is transmitted back to the SMSC 211 so that the text message is transmitted to the called terminal 240.

For example, the text message transmitted from the calling terminal 230 may be an SMS message that is roamed not only in a domestic CDMA or WCDMA network, or in an overseas GSM network, and received by the SMSC 211, and the SMS gateway 213 In case the delivery method is determined to be delivered as it is, the message method (SMS) transmitted from the originating terminal 230, the SMS message delivered back to the SMSC 211 as described above is transmitted to the destination terminal 240 by the SMSC 211. Can be.

In addition, when the length of the text message processing according to the network attribute of the called terminal 240 is smaller than the length of the text message to be transmitted, the SMS gateway 213 transmits the text message from the originating terminal 230 to the message method ( The text message received from the SMSC 211 is transmitted to the LMSC or the MMSC 212 so that the text message is transmitted to the called terminal 240 in another manner having a longer message length than the SMS).

As described above, when the SMS gateway 213 delivers the text message to be transmitted to the LMSC or MMSC 212 according to the determination of the delivery method as described above, the LMSC or MMSC 212 converts the text message into the corresponding protocol and the called terminal. And transmit to 240. In this case, when the SMS gateway 213 delivers the text message to be transmitted to the LMSC or MMSC 212, the SMS gateway 213 may include an indicator indicating that the text message exceeds the limit length. Accordingly, either the LMSC or the MMSC 212 may recognize that the original message was an SMS message according to the indicator, but that the original message was transmitted through the SMS gateway 213 as a message requiring protocol conversion, and the LMSC or MMSC 212 may be used. May convert the corresponding SMS message into an LMS or MMS protocol and transmit it to the called terminal 240.

Accordingly, when the length of the text message requested to be sent from the calling terminal 230 is greater than the length of the SMS message supported in the CDMA or WCDMA network with respect to the called terminal 240, the text message is LMS in the CDMA or WCDMA network. Alternatively, it can be converted after converting to MMS protocol. For example, the calling terminal 230 is a terminal that supports up to 140 SMS characters (140 characters in English) as a WCDMA subscriber terminal, but the receiving terminal 240 is an SMS 90 bytes (45 characters in Korean) as a CDMA subscriber terminal. In the case of a terminal supported only up to 90 characters in English, as shown in FIG. 3, if an SMS message exceeding 90 bytes is sent from the destination terminal 240, the SMS gateway 213 transmits the corresponding text message to the LMSC or MMSC 212. The LMSC or MMSC 212 is transmitted to the called terminal 240 according to the corresponding protocol. Accordingly, even if the calling terminal 230 transmits an SMS message exceeding 90 bytes through the WCDMA network, the called terminal 240 does not normally process the SMS message having such a length, but receives the corresponding message by LMS or MMS. Normal service is available.

As illustrated in FIG. 3, an example in which an SMS message of WCDMA supporting up to 140 bytes is normally received by an LMS or an MMS from a CDMA terminal supporting up to 90 bytes has been described. However, the present invention is not limited thereto. In accordance with the policy of the operator, the present invention can be variously applied to a text message having a different length or received from roaming abroad. For example, if the sent SMS message is 90 bytes, but the network attribute of the terminating terminal 240 supports up to 80 bytes, the SMS gateway 213 causes the text message to be serviced by the terminating terminal 240 as an LMS or MMS. You can relay. Alternatively, although the SMS message roamed from the originating terminal 230 in the GSM network abroad and received by the SMSC 211 is 160 bytes, the network attribute of the destination terminal 240 of the domestic CDMA or WCDMA network is 80 bytes or 140 bytes. If supported, the SMS gateway 213 may relay the text message to the LMS or MMS service from the destination terminal 240.

As described above, in relation to the text message transmitted from the calling terminal 230, the network determines the text message delivery method by checking the length of the message and the network properties of the called terminal 240 in the network. Even when the 230 and the called terminal 240 use different wireless communication networks or interworking carrier networks, the sent text message may be normally provided to the called terminal 240 regardless of its length. When the length of the text message supported between the terminal 230 and the called terminal 240 is different, the calling terminal 230 converts and transmits the text message to another text message that the called terminal 240 can process normally. Regardless of the supportable message length of the destination terminal 240 can be conveniently sent a text message.

SMS gateway 213 according to an embodiment of the present invention may be configured as shown in FIG. Referring to FIG. 4, the SMS gateway 213 according to an embodiment of the present invention may include a message length calculator 215, a subscriber information checker 216, a delivery method determiner 217, and a message forwarder 218. ).

As shown in FIG. 1, when the calling terminal 230 sends a text message to the called terminal 240, the SMSC 211 receives the text message and delivers the text message to the SMS gateway 213. Based on the forwarding request sent as above, the length of the corresponding text message included in the forwarding request is calculated. Currently, for example, the length of an SMS message sent through a domestic CDMA network does not exceed 80 or 90 bytes, and the length of an SMS message sent through a domestic WCDMA network does not exceed 140 bytes, and a GSM network abroad is used. The length of the SMS message roamed into the domestic network through the network will not exceed 160 bytes.

The subscriber information confirming unit 216 queries the network properties of the destination terminal 240 to the subscriber management server 250 according to the sending request transmitted from the SMSC 211 as above, and thus the subscriber management server 250 makes a database. In response to the network attribute of the called terminal 240 retrieved and extracted from. The subscriber management server 250 may manage subscriber terminal information such as name, terminal number, terminal type, serial number, subscribed CDMA or WCDMA network for the subscriber in the database, and such database information, that is, CDMA or WCDMA The network attribute of the called terminal 240 is responded to the query from the subscriber information confirming unit 216 based on the subscriber terminal information including information indicating which network is used. That is, the network attribute of the called terminal 240 may indicate at least whether the receiving terminal 240 is a terminal subscribed to the CDMA or WCDMA network.

Accordingly, the delivery method determination unit 217 determines the destination terminal 240 according to the length of the text message calculated by the message length calculation unit 215 and the network attributes of the destination terminal 240 to which the subscriber information confirmation unit 216 has responded. Determine the protocol of at least one of SMS, LMS, or MMS as a way to deliver the text message.

As described above, as the delivery method determination unit 217 determines the method of delivering the text message received from the SMSC 211, the message delivery unit 218 sends the text message to the SMSC 211, LMSC, or MMSC 212. Can be delivered to. When the length of the text message processing according to the network attribute of the called terminal 240 is greater than or equal to the length of the text message to be transmitted, the delivery method determination unit 217 will determine the delivery method as SMS, and thus the message delivery unit 218. The SMS may transfer the text message received from the SMSC 211 back to the SMSC 211 so that the text message is transmitted to the called terminal 240 according to a message method (SMS) transmitted from the calling terminal 230. Then, the SMSC 211 may transmit the text message to the called terminal 240 as it is, SMS protocol.

However, if the length of the text message processing according to the network attribute of the called terminal 240 is smaller than the length of the text message to be transmitted, the delivery method determination unit 217 will determine the delivery method as LMS or MMS, and thus the message. The delivery unit 218 includes an indicator indicating that the text message exceeds the limit length, and then delivers the text message to the LMSC or MMSC 212, and then either the LMSC or the MMSC 212 transmits the text message according to the indicator. The MMS protocol may be converted and transmitted to the called terminal 240.

Hereinafter, a method of providing a text message service in the wireless communication system 200 of FIG. 2 according to an embodiment of the present invention will be described in more detail with reference to the flowchart of FIG. 5.

First, when the calling terminal 230 sends a text message to the called terminal 240, the request is transmitted to the SMSC 211 (S41). The text message sending request of the calling terminal 230 may include a calling number, a called number, contents of a text message, and the like. In the present invention, the SMSC 211 does not immediately perform the call processing for the request for sending the text message, and the SMSC 211 transmits the received text message sending request to the SMS gateway 213 (S42).

As such, the SMS gateway 213 interworking with the SMSC 211 determines the delivery method of the corresponding text message to the called terminal 240. That is, the message length calculator 215 of the SMS gateway 213 confirms the length of the text message transmitted from the SMSC 211 (S43), and the subscriber information confirmation unit 216 of the SMS gateway 213 manages subscribers. The server 250 queries the server 250 to receive the network attributes of the called terminal 240 from the subscriber management server 250 (S44 and S45). The network attribute of the called terminal 240 may include information indicating at least one of CDMA or WCDMA.

Accordingly, the delivery method determination unit 217 of the SMS gateway 213 is a delivery method that can be normally processed and displayed in the destination terminal 240 based on the length of the text message and the network attributes of the destination terminal 240, For example, protocols such as SMS, LMS, MMS can be determined. In case of SMS, up to 80 bytes or 90 bytes are supported depending on the mobile carrier, and up to 2000 bytes in the case of LMS and MMS. In particular, in case of MMS, multimedia data such as images, videos and files can be supported. When the length of the text message processing according to the network attribute of the called terminal 240 is greater than or equal to the length of the text message to be transmitted (S46), the message delivery unit 218 of the SMS gateway 213 transmits the corresponding text message to the calling terminal 230. In accordance with the message method (SMS) transmitted from the (SMS) to transmit the text message received from the SMSC 211 to the SMSC 211 so that the corresponding text message is sent to the receiving terminal 240 (S47). For example, the text message transmitted from the calling terminal 230 may be an SMS message that is roamed not only in a domestic CDMA or WCDMA network, or in an overseas GSM network, and received by the SMSC 211, and may be an SMS gateway 213. When the delivery method determination unit 217 determines the delivery method to deliver the message method (SMS) transmitted from the originating terminal 230 as it is, the SMS message delivered back to the SMSC 211 as described above is sent to the SMSC 211 It may be transmitted to the called terminal 240 by (S48). The receiving terminal 240 may send a response indicating that the normal incoming call to the SMSC 211 (S49), the SMSC 211 may transmit this response to the SMS gateway 213 (S50). The predetermined control means of the SMS gateway 213 when the call processing of the message transmission is completed in this way, generates a billing according to the billing policy, such as SMS to inform the predetermined billing server (S51), to inform the SMSC 211 that the normal processing. It may be (S52).

In addition, when the length of the text message processing according to the network attribute of the called terminal 240 is smaller than the length of the text message to be transmitted in step S46, the message delivery unit 218 of the SMS gateway 213 sends the text message. The text message received from the SMSC 211 is transmitted to the destination terminal 240 in another manner (LMS / MMS) having a longer message length than the message method (SMS) transmitted from the terminal 230 or the LMSC or the like. Transfer to MMSC (212) (S53). As described above, when the message delivery unit 218 of the SMS gateway 213 delivers the text message to be transmitted to the LMSC or MMSC 212 according to the above-described delivery method determination, the LMSC or MMSC 212 transmits the text message. Conversion to the LMS or MMS protocol may be transmitted to the called terminal 240 (S54). As such, when the message transfer unit 218 of the SMS gateway 213 transfers the text message to be transmitted to the LMSC or the MMSC 212, the text message may include an indicator indicating that the limit length is exceeded. Accordingly, either the LMSC or the MMSC 212 may recognize that the original message was an SMS message according to the indicator, but was transmitted through the SMS gateway 213 as a message requiring protocol conversion, and the LMSC or MMSC 212 may be recognized. May convert the corresponding SMS message into an LMS or MMS protocol and transmit it to the called terminal 240.

The receiving terminal 240 may send a response indicating that the normal incoming call to the LMSC or MMSC 212 (S55), the LMSC or MMSC 212 may transmit this response to the SMS gateway 213 (S53). The predetermined control means of the SMS gateway 213 when the call processing of the message transmission is completed in this way, generates a billing according to the billing policy, such as SMS to inform the predetermined billing server (S57), to inform the SMSC 211 that the normal processing. It may be (S58).

As described above, in the present invention, even when the length of the text message to be transmitted is greater than the length of the SMS message supported in the CDMA or WCDMA network with respect to the called terminal 240, the text message may be assigned to the LMS or MMS in the CDMA or WCDMA network. By converting the protocol and then transmitting it, the sender can conveniently send a desired text message anytime, even without knowing the network attributes of the called party.

The functions used in the methods and systems disclosed herein may be embodied as computer readable code on a computer readable recording medium. The computer-readable recording medium includes all kinds of recording devices in which data that can be read by a computer system is stored. Examples of computer-readable recording media include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and may also be implemented in the form of a carrier wave (for example, transmission over the Internet). do. The computer readable recording medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.

As described above, although the present invention has been described with reference to limited embodiments and drawings, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from such descriptions. This is possible. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the claims below but also by the equivalents of the claims.

As described above, in the wireless communication method and system according to the present invention, a text message transmission method may be determined by checking the length of a message and a network attribute of a called terminal in relation to a text message transmitted from an originating terminal. Accordingly, even when the calling terminal and the called terminal use different wireless communication networks or interworking provider networks, the sent text message may be normally provided to the called terminal regardless of its length.

In the wireless communication method and system according to the present invention, when the length of the text message supported between the calling terminal and the called terminal is different, the calling terminal user converts the text message into another type of text message that can be normally processed by the called terminal. Even without knowing the network environment of the called terminal in advance, it is possible to conveniently send a text message anywhere anytime.

Claims (13)

In the method of serving a text message, In response to the request for sending the text message received from the calling terminal to the called terminal in the network, the length of the text message and the network properties of the called terminal are checked. Determining a delivery method of the text message to the called terminal Text message service method characterized in that. The method of claim 1, wherein the delivery method comprises at least one protocol of SMS, LMS, or MMS. The method of claim 1, wherein after determining the delivery mode Transmitting the text message to the called terminal according to the delivery method; Text message service method comprising a. The method of claim 3, wherein the transmitting step, When the length of the message processing according to the network attribute of the called terminal is greater than or equal to the length of the text message, The text message service method, characterized in that for transmitting the text message to the called terminal according to the message method transmitted from the calling terminal. The text message of claim 3, wherein the text message is an SMS message roamed in a domestic or overseas network. In the transmitting step, And transmitting the text message to the SMSC according to the delivery method, wherein the SMSC transmits the text message to the called terminal. The method of claim 3, wherein the transmitting step, When the length of the message processing according to the network attribute of the called terminal is smaller than the length of the text message, And converting the text message into another method having a longer message length than the message method transmitted from the calling terminal, and transmitting the text message to the called terminal. The text message of claim 3, wherein the text message is an SMS message roamed in a domestic or overseas network. In the transmitting step, And transmitting the text message to the LMSC or the MMSC according to the delivery method, wherein the LMSC or MMSC converts the text message into a corresponding protocol and transmits the text message to the called terminal. 8. The method of claim 7, wherein the text message includes an indicator indicating that the length limit is exceeded and is transmitted to the LMSC or MMSC, and either the LMSC or the MMSC converts the text message to the corresponding protocol according to the indicator, and the call is received. Text message service method characterized in that the transmission to the terminal. The text message service method of claim 1, wherein the network attribute is obtained based on subscriber station information including information indicating which network is managed by CDMA or WCDMA managed in a database of a subscriber management server. The method of claim 1, wherein when the length of the text message is greater than the length of an SMS message supported in a CDMA or WCDMA network with respect to the called terminal, the text message is converted into a protocol of LMS or MMS in the CDMA or WCDMA network. Text message service method characterized in that the transmission. In a wireless communication system for serving text messages, An SMS gateway interoperating with the SMSC for receiving a request for sending a text message from the calling terminal to the called terminal, The SMS gateway receives the dispatch request delivered by the SMSC, determines the length of the text message and the network attributes of the called terminal in response to the dispatch request, and then determines a delivery method of the text message to the called terminal. To do Wireless communication system, characterized in that. The method of claim 11, wherein the SMS gateway, A message length calculator configured to calculate a length of the text message according to the dispatch request; A subscriber information confirming unit for querying a network attribute of the called terminal to a subscriber management server according to the dispatch request, and receiving a network attribute of the called terminal extracted from the database by the subscriber management server; And Determining at least one protocol of SMS, LMS, or MMS as a delivery method to the called terminal according to the length of the text message calculated by the message length calculating unit and the network attribute of the called terminal to which the subscriber information confirming unit has responded. Delivery method decision part Wireless communication system comprising a. The method of claim 12, wherein the SMS gateway, Forwarding the text message to an SMSC, LMSC, or MMSC according to the determined delivery method; In the case of delivering the text message to the LMSC or MMSC, a message delivery unit for delivering to the LMSC or MMSC including an indicator indicating that the text message exceeds the limit length Further comprising, according to the indicator, any one of the LMSC or MMSC converts the text message into a corresponding protocol and transmits to the destination terminal.

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