KR100548335B1 - Short message service interworking method for dual band dual mode mobile communication terminal and communication system - Google Patents

Abstract

The present invention relates to a short message service interconnection method and a communication system of a dual mode mobile communication terminal. Conventional short messages have their own specifications, respectively, CDMA and WCDMA, and simple texts can be roaming services with each other, but have various functions. Since WCDMA SMS and EMS are different from the CDMA standard, roaming to CDMA is impossible. In view of the above problems, the present invention provides a method comprising: transmitting extended message data in a communication channel of a mobile communication network when the communication terminal accesses and operates a mobile communication network; Providing an extended short message service by processing extended message data received through a communication channel of the mobile communication network; Attaching extended message data to a communication channel of a mobile communication network at a roaming gateway, and assigning a data attribute to a teleservice identifier and transmitting the data attribute to a communication terminal of the mobile communication network; If the message received through the communication channel of the mobile communication network contains the extended message data is stored and checked, the extended message data is extracted and transmitted to the destination, even in the CDMA mode WCDMA short message service data to the CDMA bearer data portion Since transmission is replaced, the WCDMA short message service can be used in a dual mode mobile communication terminal.

Description

SHORT MESSAGE SERVICE INTERWORKING METHOD FOR DUAL BAND DUAL MODE MOBILE COMMUNICATION TERMINAL AND COMMUNICATION SYSTEM}

1 is a diagram illustrating a process in which a transmission protocol data unit used for a short message service of a conventional CDMA communication network is packetized while passing through each layer.

2 is an exemplary diagram illustrating a process of packetizing a transport protocol data unit used for a WCDMA short message service of a CDMA communication network according to an embodiment of the present invention while passing through each layer.

3 is a flowchart illustrating a conversion process that occurs while WCDMA short message service data is transferred to a dual mode mobile communication terminal through a CDMA communication network according to an embodiment of the present invention.

4 is a flowchart illustrating a conversion process that occurs while WCDMA short message service data created in a dual mode mobile communication terminal is transferred to a WCDMA mobile communication terminal through a CDMA communication network according to an embodiment of the present invention.

The present invention relates to a short message service interconnection method and communication system of a dual mode mobile communication terminal, and more particularly, to a short message service of a dual mode mobile communication terminal which enables a WCDMA short message service to be used even in a CDMA mode. An interconnect method and a communication system.

With the transition from the initial CDMA network to the next generation WCDMA network, the short message service provided to the user is also changing to an extended short message service that can send and receive multimedia messages such as text, images, and video. In addition, as a dual-mode mobile communication terminal supporting two communication networks in one terminal is released, it selectively operates in a CDMA mode or a WCDMA mode according to a network state or a user's preference.

However, in the prior art as described above, the short message has its own standard for CDMA and WCDMA, but the simple text can roam with each other, but the WCDMA SMS and EMS with more various functions are different from the CDMA standard for roaming to CDMA. There is a problem that becomes impossible.

Accordingly, the present invention has been made in view of the above-mentioned problems, and includes WCDMA short message service data in a CDMA bearer data portion, and transmits and receives by designating a teleservice identifier, and replaces and selects the WCDMA roaming gateway to a WCDMA terminal. It is an object of the present invention to provide a method and a communication system for short message service interconnection of a dual mode mobile communication terminal capable of roaming.

According to an aspect of the present invention, there is provided a communication terminal including: transmitting, by a communication terminal, an extended message data in a communication channel of a mobile communication network when the mobile terminal accesses and operates a mobile communication network; Providing an extended short message service by processing extended message data received through a communication channel of the mobile communication network; Attaching extended message data to a communication channel of a mobile communication network at a roaming gateway, and assigning a data attribute to a teleservice identifier and transmitting the data attribute to a communication terminal of the mobile communication network; Checking whether the extended message data is contained in the message received through the communication channel of the mobile communication network, and if it is stored, extracting the extended message data and transmitting to the destination.

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

1 is a diagram illustrating a process in which a transmission protocol data unit used for a short message service of a conventional CDMA communication network is packetized while passing through each layer. As shown in FIG. 1, short message service data is user data of a teleservice layer. The process of attaching the packet to the portion, packetizing the packet to the bearer data portion of the transport layer, and packetizing the packet to the CHAR i field of the link layer is described.

As can be seen from the standard for each layer of the CDMA short message service, the short message system distinguishes which transport service should transmit or receive a message by distinguishing a teleservice identifier of a transport layer.

Accordingly, the present invention informs that the current data contained in the transport protocol data unit is a WCDMA short message data using a newly defined teleservice identifier so that the data is delivered to the WCDMA short message service client.

2 is a diagram illustrating a packetization process while passing through each layer of a transport protocol data unit used for a WCDMA short message service of a CDMA communication network according to an embodiment of the present invention. WCDMA short message service data is attached to the bearer data portion of the transport layer and a teleservice identifier is assigned and packetized with a teleservice ID indicating that the bearer data contains WCDMA short message service data. In the link layer, a transport protocol data unit of the transport layer is attached to a CHAR i field and transmitted to another communication terminal through a CDMA communication network.

As can be seen in the above process, the terminal which transmits and receives the short message service data by attaching the WCDMA short message service data to the bearer data portion of the transport layer and designating an ID indicating the attribute of the data to the teleservice identifier is used. Reference to the WCDMA short message service data can be determined.

3 is a flowchart illustrating a conversion process that occurs while WCDMA short message service data is transferred to a dual mode mobile communication terminal through a CDMA communication network according to an exemplary embodiment of the present invention.

The WCDMA short message service data is converted into CDMA short message service data by the WCDMA-CDMA roaming gateway 31. The conversion process, as described above, attaches WCDMA short message service data to the bearer data portion of the transport layer and designates an ID indicating the attribute of the data in the teleservice identifier.

The WCDMA-CDMA roaming gateway 31 transmits the CDMA short message service data to the mobile communication terminal as a destination via the CDMA communication network 32.

If the CDMA modem 33 of the mobile communication terminal determines that it includes WCDMA short message service data by referring to the teleservice identifier of the transport protocol data unit transmitted through the CDMA communication network 32, the CDMA SMS-WCDMA SMS as a higher layer. Transfer to converter 34.

The CDMA SMS-WCDMA SMS converter 34 extracts the WCDMA short message service data attached to the bearer data portion of the transport layer and delivers it to the upper layer WCDMA SMS client 35.

The WCDMA SMS client 35 processes the received WCDMA short message service data to provide an extended form of short message service to the user.

4 is a flowchart illustrating a conversion process that occurs while WCDMA short message service data created in a dual mode mobile communication terminal is transferred to a WCDMA mobile communication terminal through a CDMA communication network according to an embodiment of the present invention.

Assume that the WCDMA SMS client 35 transfers WCDMA short message service data to another WCDMA mobile terminal in the CDMA mode.

The WCDMA SMS client 35 delivers WCDMA short message service data to the lower layer CDMA SMS-WCDMA SMS converter 34.

The CDMA SMS-WCDMA SMS converter 34 attaches the WCDMA short message service data to the bearer data portion of the transport layer, assigns an ID indicating the attribute of the data to the teleservice identifier, and transmits the ID to the lower layer CDMA modem 33. .

The CDMA modem 33 transmits the CDMA short message data containing the WCDMA short message service data to the WCDMA-CDMA roaming gateway 31 through the CDMA communication network 32.

The WCDMA-CDMA roaming gateway 31 checks whether the WCDMA short message data is included in the transport protocol data unit by referring to the teleservice identifier of the received CDMA short message data and extracts WCDMA short message data from the CDMA short message data if present. To the WCDMA mobile terminal.

As described in detail above, the present invention transmits the WCDMA short message service data to the CDMA bearer data portion even in the CDMA mode, thereby enabling the use of the WCDMA short message service in a dual mode mobile communication terminal.

Claims (11)

Transmitting the extended message data in a communication channel of the mobile communication network when the communication terminal is connected to the mobile communication network and operated; Providing an extended short message service by processing extended message data received through a communication channel of the mobile communication network; Attaching extended message data to a communication channel of a mobile communication network at a roaming gateway, and assigning a data attribute to a teleservice identifier and transmitting the data attribute to a communication terminal of the mobile communication network; Checking whether the message received through the communication channel of the mobile communication network includes the extended message data, and if the message is stored, extracting the extended message data and transmitting the extended message data to a destination. Connection method. The method of claim 1, wherein the receiving / processing of the extended message data of the communication terminal is performed. If it is determined that the extended message service data is included with reference to a teleservice identifier of a transport protocol data unit transmitted through a mobile communication network, transmitting the message to a higher level message converter; Extracting, by the message converter, extended message service data attached to a bearer data portion of a transport layer and delivering the extended message service data to a higher-level broadband message client; And providing an extended short message service by processing the extended message service data received by the broadband message client. The method of claim 1, wherein the step of transmitting a message from the roaming gateway to a communication terminal of a mobile communication network is Attaching the extended message service data to the bearer data portion of the transport layer and specifying an ID indicating a data attribute in a teleservice identifier and transmitting the ID to a mobile communication terminal as a destination through a mobile communication network. Method of interconnecting short message service of mode mobile communication terminal. The method of claim 1, wherein the extended message transmission step of the communication terminal is Delivering, at the broadband message client, extended message service data to a lower layer message converter; Attaching, by the message converter, extended message service data to a bearer data portion of a transport layer, and assigning an ID indicating a property of the data to a teleservice identifier to a terminal modem which is a lower layer; And transmitting the short message data containing the extended message service data from the terminal modem to a roaming gateway through a mobile communication network. The method of claim 1, wherein the step of transmitting the message to the communication terminal of the broadband communication network of the roaming gateway is Refers to the teleservice identifier of the short message data received through the communication channel of the mobile communication network, checks whether the extended protocol service data is included in the transport protocol data unit, and if so, extracts the extended message data from the short message data to communicate with the broadband communication network. The method of claim 6, further comprising the step of transmitting to a terminal. A teleservice layer containing data to the first communication system; A transport layer that includes, as bearer data, data from the teleservice layer and data to a second communication system; The transport layer further comprises an identifier indicating that the bearer data includes data to the second communication system. 7. The portable information device of claim 6, wherein the first communication system is a CDMA system. The portable information device of claim 6, wherein the second communication system is a WCDMA system. A teleservice layer containing data to the first communication system; A transport layer that includes, as bearer data, data from the teleservice layer and data to a second communication system; The transport layer further comprises an identifier indicating that the bearer data includes data to the second communication system. 10. The gateway of claim 9, wherein the first communication system is a CDMA system. 10. The gateway of claim 9, wherein the second communication system is a WCDMA system.

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