KR100657624B1 - Method and apparatus for sms service in mobile data network - Google Patents

Abstract

The present invention relates to a method and apparatus for transmitting a short message via a wireless data network for transmitting a short message to a mobile communication terminal located in a data communication network. The present invention provides a method for transmitting a short message to a mobile communication terminal connected to a short message providing server through a wireless data network, wherein the short message providing server includes an IP management server. Constructing the message, requesting IP address information to the IP management server by the number of the mobile communication terminal receiving the configured short message, IP address information received from the IP management server according to the IP address information request, and the mobile communication terminal Formatting in a UDP / IP format according to status information, and transmitting a short message formatted in UDP / IP format to the mobile communication terminal through a wireless data network. Provide a message transmission method.

Short message, data network, SMOI layer, IP address, protocol stack

Description

METHOD AND APPARATUS FOR SMS SERVICE IN MOBILE DATA NETWORK}             

1 shows a mobile communication system according to the prior art;

2 is a diagram showing a communication protocol stack structure of each component of a mobile communication system.

3 is a schematic structural diagram of a mobile communication system for performing a short message service through an IP network according to the present invention;

4 is a diagram illustrating a protocol stack of each component of the mobile communication system of FIG.

5 is a flow chart for performing short message transmission over a wireless data network in accordance with the present invention.

<Description of the code for the main part>

300: short message providing server

302: IP Management Server

310: data network

320: mobile communication terminal

The present invention relates to a method and apparatus for transmitting a short message via a wireless data network, and more particularly, to a method and apparatus for transmitting a short message via a wireless data network for transmitting a short message to a mobile communication terminal located in a data communication network. will be.

With the development of network technology in mobile communication systems, short message service (SMS), which can send and receive short messages between mobile subscribers, is generally provided.

The mobile communication system according to the related art for providing a short message service is as shown in FIG.

Referring to FIG. 1, a short message center (SMSC) 100 is connected to a mobile communication exchange (MSC) 102 and is responsible for storing and transmitting short message data. When the mobile subscriber composes the short message using the mobile communication terminal 104 to transmit the short message, the prepared short message is transmitted to the base station 106 of the cell to which the mobile communication terminal belongs.

The base station 106 transmits the received short message to the mobile communication exchange 102, and the mobile communication exchange 102 determines that the received signal is a short message and transmits it to the short message center 100.

The short message center 100 checks whether the mobile communication terminal to receive the short message is in a state capable of receiving the message, and if the mobile communication terminal can receive the short message, the short message center sends the short message to the mobile communication terminal. send.

On the other hand, the short message center 100 stores the short message when the mobile communication terminal that is to receive the short message cannot receive the message (for example, when the terminal is powered off or the phone is out of range). When the terminal can receive a message, it transmits it.

Each component of the mobile communication system providing the short message service has a communication protocol stack as shown in FIG.

That is, as shown in FIG. 2, the short message provider SP for creating and transmitting a short message of the mobile communication system may transmit the short message data configured through the upper SMS teleservice layer 200 to the transport layer 201. And via the link layer 202 to the short message center. At this time, the protocol used in the link layer 202 is X.25.

The short message center receives the short message using the protocol X.25 of the link layer 210 and transmits the received short message to the mobile communication exchange using the protocol IS-41C of the transport layer 211. It forms a short message in a form, and transmits a short message in a protocol form suitable for the mobile communication exchange to the mobile communication exchange through the link layer.

Here, the protocols used for transmitting the short message from the link layer 210 of the short message center to the mobile communication exchange are TCAP / SCCP and MTP / L1, L2.

Subsequently, the mobile communication exchange converts the short message to the base station using the protocol IS-634 according to the interface specification with the base station, and the base station converts the IS-95, which is a CDMA wireless access protocol, to wirelessly communicate with the mobile communication terminal. The short message is converted into a wireless data transmission protocol and then transmitted to the mobile communication terminal.

The mobile communication terminal receives the short message service as it receives the short message through the CDMA radio access protocol layer 220, the SMS relay layer 221, the SMS transport layer 222, and the SMS teleservice layer 223.

Short message service provided by a mobile communication system having such a protocol stack is provided through a voice call-oriented mobile communication network.

However, as the range of mobile communication services gradually widens, there is a speed limitation in providing data services in existing IS-95A / B systems and CDMA-2000 1x systems. Thus, existing IS-95A / B systems and CDMA-2000 1x systems are limited. A 1x Evolution Data Only (Ev-Do) system has been developed that can improve data rates over the system.

As the name suggests, 1x Ev-Do system was developed not only for voice but also for data transmission and reception, and was developed to perform data transmission speed faster by distinguishing voice and data channels.

As such, considering the characteristics of voice and data that cannot be combined with each other in the same channel, the channels are separately used to maximize the data transmission speed.

In a 1x Ev-Do system, the download speed is up to 2.4Mbps, which allows up to 29 users to use a single channel simultaneously, and the maximum upload speed is up to 307Kbps.

As such, as the demand for data service increases, the mobile communication terminal frequently connects to a wireless data network in order to receive data service.

Accordingly, since the mobile communication service subscriber is connected to the wireless data network and needs to access the voice call network again in order to receive the short message service, there is a problem in that the quick short message service cannot be provided.

Accordingly, the present invention has been made to solve the problems of the prior art, and provides a method and apparatus for transmitting a short message through a wireless data network for transmitting a short message using a UDP and IP. Has its purpose.

According to an aspect of the present invention, there is provided a method for transmitting a short message to a mobile communication terminal connected to a short message providing server through a wireless data network, wherein the short message providing server includes an IP management server. Configuring a short message for transmission to a communication terminal, requesting IP address information to the IP management server by the number of the mobile communication terminal receiving the configured short message, received from the IP management server according to the IP address information request And formatting the UDP / IP format by the IP address information and the mobile terminal status information, and transmitting the short message formatted in the UDP / IP format to the mobile terminal through a wireless data network. The present invention provides a method for transmitting a short message through a wireless data network. There are Jing.

Here, the formatting of the UDP / IP format by the IP address information and the mobile terminal status information received from the IP management server according to the IP address information request may include generating a data packet including a UDP header added to a short message. The header includes at least terminal status information and transmission information for accurately transmitting a short message to a mobile communication terminal.-Generates a data packet including an IP header including IP address information in a data packet appended with a UDP header. It includes a step.

In addition, the short message providing server requests the IP management server for IP address information of the SMS teleservice layer that generates the short message and the mobile communication terminal that receives the generated short message, and receives the received IP address information and terminal status according to the request. SMOI layer for transmitting information with short message, UDP layer for generating data packet with UDP header added to short message by terminal status information, IP header added to data packet with UDP header added with IP address information It has a protocol stack structure including an IP layer for generating a data packet, and a physical layer for transmitting the data packet with the IP header added to the wireless data network.

Hereinafter, a preferred embodiment of a method and apparatus for a short message service through an IP network according to the present invention will be described in detail with reference to the accompanying drawings.

3 is a schematic structural diagram of a mobile communication system for performing a short message service through an IP network according to the present invention, and FIG. 4 is a diagram showing a protocol stack of each component of the mobile communication system of FIG.

Referring to FIG. 3, a mobile communication system for a short message service through an IP network according to the present invention includes a short message entity server (SME: Short Message Entity) which intends to transmit a short message through an IP network, that is, a data network 310. 300), the IP management server 302 and the mobile communication terminal 320 for receiving the short message via the data network 310.

Here, the data network 310 includes a base station 312, a mobile communication exchange 314 and a network matching device (IWF or PDSN) 316 for providing wireless data communication. In this case, when the network system is a CDMA 2000 1x system or a 1x EV-DO system, the data network 310 includes a base station, a packet control device (PCF), and a packet data service device (PDSN).

The IP management server 302 is configured to provide IP address information corresponding to a mobile identification number (MIN) of the mobile communication terminal 320 according to a request of the short message providing server 300.

Each component of the mobile communication system according to the present invention having such a configuration has a protocol stack structure as shown in FIG.

Referring to FIG. 4, the short message providing server 300 according to the present invention is an SMS teleservice layer 400 which is an application layer for providing a short message service, and a short message in a form for transmitting a short message through a wireless data network. SMOI layer 401, which is a presentation layer for formatting messages, User Datagram Protocol (UDP) layer 402, which is a transport layer for reliable data transmission, and a wireless data network, which is an Internet Protocol (IP) network. IP layer 403 and physical layer 404 for sending short messages.

Here, the SMOI layer 402 of the short message providing server 300 receives IP address information of the mobile communication terminal 320 that receives the short message from the IP management server 302.

In addition, the network matching device 316 (or PDSN) is a network layer IP point 410, a physical layer 411, a point-to-point protocol (PPP) data link layer for the PPP session with the mobile communication terminal 320 Layer 412 includes a relay layer 413 for sending short messages to the mobile communication exchange 314.

The mobile communication exchange 314 may include an L2 relay layer 420, which is a data link layer, a relay layer 421, which receives a short message from the network matching device 316, and a link layer, which compensates for constraints in a wireless communication channel environment. A link layer protocol (Radio Link Protocol) layer (hereinafter referred to as RLP layer) 422 and an air link 423, which is a physical layer for transmitting short messages over the air.

The mobile communication terminal 320 includes an air link layer 430, an RLP layer 431, a PPP layer 432, an IP layer 433, a UDP layer 434, an SMOI layer 435, and an SMS teleservice layer 436. ).

The short message service operation of the mobile communication system according to the present invention having such a configuration will be described.

The short message providing server 300 configures a short message for transmitting to the mobile communication terminal 320 through the data network 310, and transmits the short message to the network matching device 316.

That is, the SMS teleservice layer 400 of the short message providing server 300 configures a short message parameter for transmission to the mobile communication terminal 320 and outputs the short message parameter to the SMOI layer 401.

At this time, the SMS teleservice layer 400 designates the number MIN of the mobile communication terminal 320 generally used in the SMS and PCS networks as a transmission address of the short message parameter.

The SMOI layer 401 transmits a request signal for IP address information and terminal status information by the mobile communication terminal 320 number in the short message parameter input from the SMS teleservice layer 400 to the IP management server 302.

The IP management server 302 transmits the IP address corresponding to the mobile communication terminal number and the status information of the terminal to the SMOI layer 401 according to the request signal of the IP address information and the terminal status information received from the SMOI layer 401. . In this case, the terminal state information includes active, donor and idle information.

The SMOI layer 401 transfers the IP address information received from the IP management server 302, the terminal status information, and the short message parameter received from the SMS teleservice layer 400 to the UDP layer 402.

The UDP layer 402 uses the short message parameter transmitted from the SMOI layer 401 as a payload, and transfers the data format in which the UDP header is added to the payload, to the IP layer 403. Here, the UDP header records transmission information for accurately transmitting a short message to the mobile communication terminal 320 such as terminal status information.

The IP layer 403 uses the data format delivered from the UDP layer 402 as a payload, and generates and delivers the data format to which the IP header in which IP address information is recorded is added to the physical layer 404.

The physical layer 404 transmits the data format transferred from the IP layer 403 to the physical layer 411 of the network matching device 316.

The network matching device 316 converts the data format received from the short message providing server 300 through the physical layer 411 into the IP layer 410, the PPP layer 412 which is a data link layer using the PPP protocol, and the relay layer. 413 is sent to the mobile communication exchange 314.

In this case, the PPP layer 412 uses the data packet transmitted through the IP layer 410 as a payload, generates a data packet including a LAC header in which data link layer information is recorded, and delivers the data packet to the relay layer 413. .

The mobile communication exchange 314 receives a data packet from the network matching device 316 through the relay layer 421 and transmits the received data packet to the RLP layer, which is a link layer using the RLP protocol through the L2 relay layer 420. Forward to 422.

The RLP layer 422 of the mobile communication switch 314 uses the data packet transmitted from the L2 relay layer 420 as a payload, and adds a MAC header in which the MAC address of the mobile communication terminal 320 is recorded. Generates a data packet and wirelessly transmits the generated data packet to the mobile communication terminal 320 through the air link layer 423. Here, the air link layer 423 is a layer for wireless communication.

The mobile communication terminal 320 wirelessly receives the data packet from the mobile communication exchange 314 through the air link layer 423 and then transfers the received data packet to the RLP layer 431.

The RLP layer 431, which is the link layer of the mobile communication terminal 320, removes the MAC header from the transmitted data packet, and transmits the data packet from which the MAC header is removed, to the PPP layer 432, which is the data link layer.

The PPP layer 432 removes the LAC header in which the data link layer information is recorded from the data packet transmitted from the RLP layer 431, and transmits the data packet from which the LAC header is removed to the IP layer 433.

The IP layer 433 of the mobile communication terminal 320 removes the IP header from the forwarded data packet, and forwards the data packet from which the IP header has been removed to the UDP layer 434.

The UDP layer 434 removes the UDP header from the data packet transmitted from the IP layer 433, and forwards the data packet from which the UDP header has been removed to the SMOI layer 435.

The SMOI layer 435 forwards the data packet delivered from the UDP layer 434, that is, the short message, to the SMS teleservice layer 436.

As the mobile communication terminal 320 receives the data packet from the SMOI layer 435 by the SMS teleservice layer 436, the mobile communication terminal 320 confirms the short message from the short message providing server 300.

A method of transmitting a short message via a wireless data network according to the present invention configured and operated as described above will be described with reference to the accompanying drawings.

5 is a flowchart for performing a short message transmission through a wireless data network according to the present invention.

The short message providing server 300 generates a short message for transmission to the mobile communication terminal 320 by the SMS teleservice layer 400 (S500), and IP by the number MIN of the mobile communication terminal 320. The management server 302 requests the IP address information of the mobile communication terminal 320 (S502).

Subsequently, the short message providing server 300 formats the short message into a UDP / IP data format for transmitting the short message through the wireless data network by the IP address information received from the IP management server 302 (S504).

That is, the SMOI layer 401 of the short message providing server 300 transmits the IP address information request signal to the IP management server 302 by the mobile communication terminal number, and accordingly the mobile terminal 302 receives the IP address information request signal from the IP management server 302. The short message including the IP address information, the terminal status information, and the like of the communication terminal 320 is transmitted to the UDP layer 402.

The UDP layer 402 transfers the data packet in the form of adding a UDP header to the short message to accurately transmit the short message to the mobile communication terminal 320 based on the received information, to the IP layer 403.

The IP layer 403 generates a data packet formatted in a UDP / IP data format in which an IP header in which IP address information is recorded is added to a data packet transmitted from the UDP layer 402.

The short message providing server 300 transmits the data packet formatted in UDP / IP format to the mobile communication terminal 320 through the wireless data network (S506).

Here, the wireless data network includes at least a network matching device 316 and a mobile communication exchange 314.

The mobile communication terminal 320 confirms the short message transmitted by the short message providing server 300 as the short message received through the wireless data network is removed by each protocol stack by the IP header and the UDP header.

 The method and apparatus for transmitting a short message via a wireless data network according to the present invention transmit a short message to a mobile communication terminal through a data network.

Therefore, the present invention can provide a short message service to a mobile communication terminal frequently connected to a data network as data service usage increases, thereby improving user reliability of the short message service.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art to which the present invention pertains without departing from the spirit and scope of the present invention as set forth in the claims below It will be appreciated that modifications and variations can be made.

Claims (4)

A method for transmitting a short message to a mobile communication terminal connected to a short message providing server through a wireless data communication network, wherein the short message providing server includes an IP management server. Constructing a short message for transmission to the mobile communication terminal; Requesting IP address information and terminal status information from the IP management server by the number of the mobile communication terminal receiving the configured short message; Formatting the short message in UDP / IP format based on the IP address information and the terminal status information received from the IP management server according to the request; And Transmitting a short message formatted in the UDP / IP format to the mobile communication terminal through the wireless data communication network; The short message transmission method through a wireless data network, characterized in that comprises a. The method of claim 1, Formatting the short message in UDP / IP format according to the request based on the IP address information and the terminal state information received from the IP management server; Generating a data packet including a UDP header added to the short message, wherein the UDP header includes at least the terminal state information and transmission information for correctly transmitting the short message to the mobile communication terminal; And And generating a data packet including an IP header including the IP address information to the data packet to which the UDP header is added. An apparatus for transmitting a short message to a mobile communication terminal connected to a short message providing server through a wireless data communication network, wherein the short message providing server includes an IP management server. A memory in which a program is stored; A processor coupled to the memory to execute the program Including but not limited to: The processor by the program, Constructing a short message for transmission to the mobile communication terminal; Requesting IP address information and terminal status information from the IP management server by the number of the mobile communication terminal receiving the configured short message; Formatting the short message in UDP / IP format based on the IP address information and the terminal status information received from the IP management server according to the request; Transmitting a short message formatted in the UDP / IP format to the mobile communication terminal through the wireless data communication network; Short message transmission apparatus over a wireless data network, characterized in that comprises a. The method of claim 3, The short message providing server An SMS teleservice layer for generating the short message; Request IP address information and terminal status information of the mobile communication terminal receiving the generated short message to the IP management server, and the received IP address information and the terminal status information together with the short message. Delivering SMOI layer; A UDP layer for generating a data packet in which a UDP header is added to the short message according to the terminal state information; An IP layer for generating a data packet in which an IP header is added to the data packet to which the UDP header is added by the IP address information; And a protocol stack structure including a physical layer for transmitting the data packet appended with the IP header to the wireless data network.

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