KR20070070841A - Method for processing a short message - Google Patents

Abstract

A short message processing method is provided to enable a mobile communication terminal to receive a short message sent from the third party during a video call, so as to display and store the received message. A video call inquiry message for a particular terminal is received from an SMS(Short Message Service) server(S1,S2). It is checked whether a video call of the inquired particular terminal is conducted, and the results are transmitted to the SMS server. Short message transmission information which includes terminal information is received from the SMS server(S3). The whole sentence of a received short message is inserted into an SDP(Session Description Protocol) script, and the script is transmitted to a terminal which is in video call state through a high-speed packet data communication network(S4,S5).

Description

How to handle short messages {METHOD FOR PROCESSING A SHORT MESSAGE}

1 is a diagram illustrating a mobile communication network configuration according to an embodiment of the present invention.

2 is an exemplary SIP protocol stack structure for explaining an embodiment of the present invention.

3 is a flowchart of processing a short message in a SIP server 10 and an SMS server 20 according to an embodiment of the present invention.

4 is a flowchart of processing a short message in a video call terminal 30 according to an embodiment of the present invention.

The present invention relates to a mobile communication packet network, and more particularly, to a method of receiving and processing a short message during a video call in a mobile communication terminal and a method of processing a short message of a SIP server for supporting the same.

The mobile communication system has been developed through the first generation analog AMPS (Advanced Mobile Phone System) and the second generation (2G) cellular / personal mobile communication (PCS). Recently, the third generation high speed data communication, IMT- 2000 has been developed and commercialized.

IMT-2000 service can be divided into CDMA 2000 1x service and CDMA 2000 1x EV-DO service.

Code Division Multiple Access (CDMA) 2000 1x service (hereinafter referred to as "1x only" service) uses the IS-95C network, which has evolved from the existing IS-95A and IS-95B networks. It is a service that enables wireless Internet speeds up to 144Kbps faster than 56Kbps. Therefore, it is possible to provide various multimedia services as well as improve existing voice and WAP service quality through CDMA 2000 1x service.

Meanwhile, the 3rd Generation Partnership Projects (3GPP2), an international standardization organization for CDMA systems, is based on Qualcomm's High Data Rate (HDR) as a method for high-speed packet transmission, called "CDMA 2000 1x Evolution Data Optimizewd." Named and confirmed as an international standard (hereinafter referred to as "EV-DO") This EV-DO method (also called HDR) defines an evolutionary method of transmitting data only in a 1x-dedicated communication standard. It provides two-way high speed data service with transmission speed of up to 2.4Mbps.

Mobile communication systems are generally developed to perform voice communication while providing mobility to users. As well as voice communication in the mobile communication system has increased the demand for data communication, according to the high speed packet data communication system (currently called 1x EV-DO (Evolution-Data Only) starting from a short message service (EV-DO)) HRPD) has emerged.

Such a high speed packet data communication system is basically a system for data communication. However, the first purpose of the mobile communication system is to provide a voice communication service. Therefore, a method for providing a voice service in a high speed packet data communication system has been developed.

Since the high speed packet data communication system is a method for data communication, if the user wants to transmit voice, he uses the VoIP method, which is a data-based voice transmission method. To this end, each terminal is equipped with a SIP (H.323) protocol stack to perform a video call. do.

Unlike a general call, a video call is transmitted and received by encoding a video and an audio in a packet, not a circuit. Therefore, in a mobile communication terminal capable of a video call, video, audio, and control signals are transmitted and received through the EV-DO network during a video call, so that a general telephone or short message is transmitted from a third party using an IS-2000 (IS-95) network. (SMS) has the disadvantage that it can not receive.

Accordingly, an object of the present invention is to provide a short message processing method capable of receiving, displaying and storing a short message sent from a third party during a video call in a mobile communication terminal capable of a video call.

Furthermore, another object of the present invention is to provide a method for processing a short message, which can be executed in a SIP server that can send a short message by checking a state of a video communication mobile communication terminal.

A method according to an embodiment of the present invention for achieving the above object is an executable method in a SIP server for storing and managing IP addresses of mobile communication terminals with terminal information,

Receiving a video call inquiry message for a specific terminal from an SMS server;

Checking the video call of the inquired terminal and transmitting the result to the SMS server;

Receiving the short message transmission information including the terminal information from the SMS server;

And inserting the full text of the received short message into a Session Description Protocol (SDP) script and transmitting it to a corresponding terminal in a video call through a high-speed packet data communication network.

The method according to another embodiment of the present invention is a method executable in a mobile communication terminal capable of a video call,

Receiving a Session Description Protocol (SDP) packet during a video call;

Extracting a short message message from the received SDP packet;

Storing the extracted short message text;

And expressing a short message reception status.

According to the embodiments of the present invention as described above, even when a short message is sent from a third party other than the call object during the video call, the mobile communication terminal normally receives the short message using SDP, which is a video telephone call processing protocol. You can do it.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. Detailed description of known functions or configurations related to the present invention, for example, the configuration of the CDMA 2000 mobile communication network according to the IS-2000 standard (BTS, BSC, HLR, etc.) and the high-speed packet data communication network according to the IS-856 standard If it is determined that the configuration (PDSN, AAA, etc.) may unnecessarily obscure the subject matter of the present invention, a detailed description thereof will be omitted.

First, FIG. 1 illustrates a configuration diagram of a mobile communication network according to an embodiment of the present invention, and more specifically, a high-speed packet data communication system (EV-DO network) and a CDMA 2000 mobile communication system according to an IS-2000 standard. The configuration of the mobile communication network used is shown.

Referring to FIG. 1, mobile communication terminals (also referred to as video call terminals) 10 and 20 capable of making video calls according to an embodiment of the present invention provide voice communication and text message services according to an IS-2000 standard through a wireless link. At the same time, a high-speed packet data service according to the IS-856 standard can be provided through a wireless link. In addition, the mobile communication terminals 10 and 20 capable of a video call may receive a short message service using an SDP (Session Description Protocol), which is a video phone call processing protocol, even during a video call according to an embodiment of the present invention.

The SIP server 10 basically assigns a simple IP address or a mobile IP address when the mobile communication terminals 30 and 40 that are capable of video calls are assigned a simple IP address or a mobile IP address by PPP with a packet data serving node (PDSN). On the basis of registration of SIP. The SIP server 10 accesses a video call database in which SIP information of mobile communication terminals for video calls is stored. Using the information stored in the video call database as described above, the SIP server 10 checks whether or not the video call of the specific terminal inquired from the SMS server 20 and transmits the result to the SMS server 20. In addition, when the short message transmission information including the terminal information is received from the SMS server 20, the full text of the short message is inserted into the SDP (Session Description Protocol) script, and the corresponding terminal in the video call through the high speed packet data communication network (EVDO) ( 30 or 40).

The SMS server 20 receives the short message sent through the IS-2000 network, and inquires whether the receiving terminal has a video call to the SIP server 10, and sends the short message transmission information according to the query result. (10) or through the IS-2000 network. For reference, the short message transmission information includes terminal information to receive a message and a short message full text.

Reference numeral 60 which is not described in FIG. 1 represents a mobile switching system (MSC), and it is assumed that the SIP server 10 and the SMS server 20 are connected through a network.

2 illustrates a SIP protocol stack structure for explaining an embodiment of the present invention. As already known, the SDP exists in the SIP protocol stack as shown. The SDP describes a multimedia session, which includes information about the media stream, such as address, port, payload type, start time and end time. And this information is managed by SDP in the form of simple text. Short messages have a relatively small byte size and can be inserted into SDP scripts for transmission. In the present invention, since the SIP server 10 inserts the short message received from the SMS server 20 into the SDP script and transmits the short message, the short message can be received by the terminal 30 in the video call. This will be described in more detail with reference to FIGS. 3 and 4.

3 is a flowchart illustrating processing of a short message in a SIP server 10 and an SMS server 20 according to an embodiment of the present invention, and FIG. 4 is a video callable terminal 30 according to an embodiment of the present invention. Each shows a flow chart for processing a short message.

Referring to FIG. 3, first, the third terminal 50 sends an SMS to one terminal 30 in a video call while assuming that the video call terminal 1 30 and the video call terminal 2 40 are in a video call. If it was sent the short message will be sent to the SMS server 20.

Upon receiving the short message (step S1), the SMS server 20 transmits a video call query availability message to the SIP server 10 to inquire whether the terminal to receive the short message is in the video call (step S2). Then, the SIP server 10 checks the video call of the inquired terminal and transmits the result to the SMS server 20. In the checking method, it is possible to check whether or not the terminal information to receive the short message is registered in the video call database.

The SMS server 20 receiving the result of the video call of the terminal to receive the short message from the SIP server 10 transmits the short message through the IS-2000 network if the terminal is not in the video call. However, if the terminal receiving the short message is in a video call, the short message transmission information including the terminal information is transmitted to the SIP server 10 (step S3).

After receiving the short message transmission information including the terminal information from the SMS server 20, the SIP server 10 inserts the full text of the short message into the SDP (Session Description Protocol) script (step S4), and then a high-speed packet data communication network ( EV-DO) is transmitted to the corresponding terminal 30 in the video call (step S5). In such an SDP packet, identifier information indicating the full insertion of a short message is included.

As described above, when the short message is transmitted to the terminal 30 in the video call by the SIP server 10, the corresponding terminal 30 expresses the reception state of the corresponding message to the user according to the procedure shown in FIG. give.

Referring to FIG. 4, during a video call (step S11), the terminal 30 receives an SDP packet transmitted by the SIP server 10 through the EV-DO network (step S12). When the SDP packet is transmitted, the SDP packet is first parsed (step S13), and it is checked whether a short message exists in the parsed packet information (step S14). The checking method can be checked through the short message identifier information. If the short message does not exist, video call (step S15) is continuously performed, but if the short message is found to exist, the short message is extracted from the received SDP packet and stored in the internal memory. Express to the user (step S16). The presentation method is the same as the general short message presentation processing method. Through the process of expressing the reception status of the short message, the user on the call can recognize the reception status of the short message.

Therefore, a user can receive a short message through a high speed packet data communication network even during a video call.

As described above, even when a short message is sent from a third party other than a call entity during a video call, the mobile communication terminal normally receives the short message using SDP, which is a video telephone call processing protocol. It has the advantage of being able to express.

On the other hand, the present invention has been described with reference to the embodiments shown in the drawings, which are merely exemplary, and those skilled in the art will understand that various modifications and equivalent other embodiments are possible therefrom. Therefore, the true technical protection scope of the present invention should be defined only by the appended claims.

Claims (2)

In the short message processing method executable in the SIP server for storing and managing the IP address of the mobile communication terminals in the video call, Receiving a video call inquiry message for a specific terminal from an SMS server; Checking the video call of the inquired terminal and transmitting the result to the SMS server; Receiving the short message transmission information including the terminal information from the SMS server; And inserting the full text of the received short message into a Session Description Protocol (SDP) script and transmitting it to a corresponding terminal in a video call through a high-speed packet data communication network. In the short message processing method executable in a mobile communication terminal capable of video calls, Receiving a Session Description Protocol (SDP) packet during a video call; Extracting a short message message from the received SDP packet; Storing the extracted short message text; And displaying a short message reception status.

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