KR20060136108A - Method of transmitting Short Message Service only to mobile terminal of idle mode - Google Patents

Abstract

The present invention relates to a method for transmitting a short message to a mobile terminal in a call, wherein the short message service center receiving a request for transmitting a short message from the calling terminal checks the call state of the called terminal through the called party's home location register and the mobile communication switching center. Thus, when the called terminal is in a call, the short message is stored in a memory in the short message service center, and when the called terminal is in idle mode, a method of transmitting a short message is provided.

When the called terminal is in the idle mode (Idle Mode), by sending a short message, the called terminal does not receive the short message during the call, thereby making it possible to make an uninterrupted call.

Short Message Service Center, Home Locator, Telecommunications Bureau

Description

Method of transmitting short message service only to mobile terminal of idle mode

1 is a block diagram of a mobile communication system to which the present invention is applied.

2 is a processing flowchart for transmitting a short message to a mobile communication terminal in a call according to an embodiment of the present invention.

3 is a processing flowchart for transmitting a short message to a mobile communication terminal in a call according to another embodiment of the present invention.

* Explanation of symbols on the main parts of the drawing

20: calling mobile communication switching center 30: short message service center

40: called party home location register 50: called party mobile communication switching center

The present invention relates to a method for transmitting a short message to a called terminal in a mobile communication system. More specifically, a Short Message Service Center (SMSC), which receives a short message transmission request from an originating terminal, calls a state of a called terminal through a called party's home location register and a mobile communication switching center. If the called terminal is busy, the short message is stored in the memory in the short message service center and the called terminal is in an idle mode (called idle mode, hereinafter referred to as "idle mode"). It is about how to transmit.

In general, a short message service (SMS) is referred to as a mobile communication terminal between a mobile communication terminal and a mobile communication terminal or a mobile terminal and a short message entity (SME). In addition, it is a communication service that delivers messages in a limited sized text form (including short message servers) between short message servers or other message centers that provide on-demand information. In particular, in recent years, as well as simple interpersonal message transmission such as voicemail storage notification, simple message transmission and reception, intergroup transmission, reservation transmission, email arrival notification, stock information notification, product information notification, financial information notification, remote meter reading, electronic product remote It has become an indispensable service throughout the use of mobile telecommunications services, including control, traffic information transmission, emergency news, and notification of passing exams.

In the Code Division Multiple Access (CDMA) scheme currently used in the Republic of Korea, SMS is a mobile terminated (MT) or mobile communication in which a message is received by a mobile communication terminal or software depending on the type of service. There are mobile originated (MO), broadcast type information reception, and on-demand information service that messages are sent from a terminal or software.

The above service is classified into a point-to-point service that can confirm transmission according to a providing method and a cell broadcasting service of a unidirectional broadcasting concept.

Point-to-point service is an information transmission method that requires confirmation of a transmission result to a specific terminal and is implemented in almost the same concept as a two-way radio call. General short message transmission / reception (MT / MO) corresponds to this service method.

On the other hand, Cell Broadcasting service is a one-way transmission method that does not require the transmission result in the system and functions similar to the existing one-way radio call. The above-mentioned broadcast type information receiving service corresponds to this service method.

On-demand information service can be implemented by continuous operation of Mobile Terminated (MT) SMS and Mobile Originated (MO) SMS of SMS or User Acknowledgment (subscriber selectively responds while SMS is running) and specific information such as stock. Subscriber will select and process.

In the point-to-point service type SMS, a short message transmission may be delayed when a terminating terminal is turned off or when a call is released. The delayed short message is stored in the memory in the SMSC, and then retransmitted at a predetermined time interval, and forwarded when the called terminal becomes available. The called address (telephone number information, etc.) of the received short message is received. ) Is not delivered because it is inaccurate, or it is automatically deleted from the SMSC after the specified expiration date of the short message. In addition, the SMSC determines the completion and retransmission by checking the success and failure of message delivery to the called terminal.

The SMS of the cell broadcast service method is generally similar to unidirectional radio calling in the form of transmission using a paging channel of IS-95-A (CDMA digital cellular system standard). This service is a mass text broadcasting type service that transmits the same message to multiple subscribers at the same time. In general, it is a living information service.

All of the above service methods transmit a short message on a traffic channel when the called terminal is busy.

In general, when a short message is received by the called terminal, an alarm sounds or vibrates according to a receiving notification setting mode of the called terminal to notify the user that the message has been received. In this case, the user of the called terminal can immediately check the contents of the short message through the LCD screen of the called terminal, or activate the short message stored in the SMS memory of the terminal by pressing a specific button of the terminal.

However, as mentioned above, if the receiving terminal receives a short message while talking on the phone, it is very inconvenient to immediately check the content of the short message. Therefore, most of the recipient terminal users delay the confirmation of the message until the end of the call, or even if you check the accompaniment to the other party was busy, such as a lot of inconveniences. In addition, most of the currently used mobile communication terminals receive a short message and receive notifications at regular intervals. If the user delays checking the message and continues the call, the call is interrupted by repeated beeps. In addition, when the reception notification mode MODE is the vibration mode MODE, the user may experience great inconvenience in the first reception notification indicating that the short message is received.

In order to avoid the above inconvenience, the called terminal users may set the short message reception notification mode (MODE) to “not informed”. However, in this case, it is difficult to recognize whether the short message is received itself, and the inconvenience of having to check the reception of the short message frequently is not only when the called terminal is busy but also in the usual idle mode.

In order to solve this problem, Korean Patent Laid-Open Publication No. 10-2004-0013800 (name of the invention: "Method and system for transmitting a short message during an incoming terminal call in a mobile communication system") has an originating terminal moving to a called party through SMSC. When the short message is transmitted to the communication exchange station, the called mobile communication exchange station receiving the short message determines whether the called terminal is in a busy state, but if it is busy, temporarily stores the short message in the incoming SMSC without transmitting the short message. A method of transmitting a short message during a call of a called terminal for transmitting the short message to the called terminal when the called terminal is idle due to termination of a call of the called terminal by retrying a retry scheme is disclosed. have.

In the above conventional technology, the short message received by the called party's mobile SMSC itself must be stored, and a call request must be made to the called terminal to continuously check the call state of the called terminal. However, the recipient mobile communication SMSC must store and retransmit the real-time processing and the incomplete SMS by not only a short message transmission request to the called terminal but also a call processing request and a short message transmission / reception request of many mobile communication terminals. Therefore, there is a problem in that a server for transmitting a short message by storing each short message and confirming a call state of the called terminal in order to faithfully perform a mobile communication incoming SMSC.

The present invention is to solve the above problems, in transmitting a short message to the called terminal does not transmit a short message when the called terminal is busy, so that the call is not disturbed, such as reception notification or vibration during the call There is a purpose.

In addition, it is an object to ensure that the user of the receiving terminal is not inconvenient to confirm the short message by transmitting a short message immediately after the call of the terminating terminal.

In order to achieve the above object, the present invention provides a method for transmitting a short message to a mobile communication terminal in a call in a short message service center, comprising: a first step of receiving a short message from an originating terminal; A second step of storing the short message in a memory when the short message is received and performing a position inquiry of a called terminal; A third step of identifying a current call state of the called terminal by checking a location inquiry result of the called terminal; A fourth step of transmitting the short message to the called terminal if the called terminal is in an idle mode as a result of determining the call state of the called terminal; And a fifth step of waiting for the short message transmission when the called terminal is busy and transmitting the short message when the call of the called terminal is terminated.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, detailed descriptions of well-known functions or configurations will be omitted if it is determined that the detailed description of the present invention may unnecessarily obscure the subject matter of the present invention. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

1 is a block diagram of a mobile communication system to which the present invention is applied.

The mobile communication network to which the present invention is applied includes a calling terminal 10, a calling mobile communication switching center (MSC: Mobile Switching Center, hereinafter referred to as "calling MSC") 20, and a short message service center (SMSC). , Called "SMSC" 30, called Home Location Register (HLR) 40, called mobile MS (hereinafter referred to as "MSSC"). 50) and the called terminal 60. In addition, although not shown in the drawings, the mobile communication network further includes components of a basic mobile communication system such as a base station and a base station controller.

In Figure 1, the calling terminal 10 and the called terminal 60 is a mobile communication terminal equipped with a specific key to access the SMS menu in the terminal and an icon (ICON) indicating the SMS message arrival status in the menu. The hardware of the terminal is not different and everything can be implemented in software.

The calling terminal 10 makes a request for transmitting a short message to the calling MSC 20 through the base station. In the present embodiment, the calling terminal 10 is an example of a mobile communication terminal, but a web browser is installed and includes a computer capable of inputting and transmitting a short message on the web and a server capable of creating and sending a short message. Can be.

The short message above is a service identifier (TID: Teleservice Identifier), calling party number, called party number, bearer reply option, and bearer data that distinguishes a service purpose such as a voice mail or a general message. It consists of.

Bearer data is data used for a bearer service that provides voice or data provided in the first, second, and third layers of seven layers of OSI (Open System Interconnection) in real time. The bearer data forms a teleservice layer, which provides a service in which an information processing function is added to the information transmission function of the bearer service. The teleservice layer is composed of user data containing the contents of an incoming message, a short message service center's time (SMSC Time Stamp), a priority indicator, and a privacy indicator of the message. ), Alert on Delivery, and Language Indicator.

The originating / receiving side MSC 20 has a control function and a linkage function with a public switched telephone network (PSTN) to allow a plurality of base stations to be efficiently operated, and has a plurality of exchanges. In addition, a visitor location register (VLR) is generally provided and controlled therein. Here, the visitor location register stores the subscriber information of the home subscriber and the visited subscriber in the area controlled by the corresponding MSC. That is, when a subscriber registered in one MSC moves to an area managed by another MSC, a copy of the original subscriber's original database is temporarily stored.

The calling MSC 20 sends a short message requested by the calling terminal 10 to the SMSC 30, and afterwards, the short message from the SMSC 30 is successfully stored and sent to the called terminal 60. Receives, serves to transmit a response to the calling terminal (10).

When the calling MSC 20 sends the short message to the SMSC 30 to check whether the normal message is transmitted, the short message including the Bearer Reply Option information is transmitted, and then the SMSC 30 sends the short message. In order to check whether the short message is normally received and stored in the memory, a timer having a predetermined time is set to operate.

When the calling MSC 20 receives a normal acknowledgment notification from the SMSC 30 before the timer operation is completed, the calling MSC 20 transmits the acknowledgment notification message to the calling terminal 10 and sends it to the calling terminal 10 and the base station. The short message sending task is terminated by releasing the set system resources.

The SMSC 30 is an independent node having a unique Signaling Point Code (SPC) in a signaling system 7 (SS7) network, which identifies each signal point (SP) in a signal network. It is connected to a location register and a mobile service center (MSC) to find the location of the recipient and delivers a short message to subscribers via a public land mobile network (PLMN).

The SMSC 30 may transmit and receive numbers and letters in both directions between various text delivery systems (Internet server system, mobile phone, etc.) and recipients using a mobile communication network. The SMSC 30 is connected to the GSM (Group Special Mobile) network currently used in Europe as well as the CDMA network.

In the embodiment of the present invention, the SMSC 30 receives the short message from the calling terminal 10 through the calling MSC 20, even when the called terminal 60 is busy, even if the called terminal 60 is busy. As in the case where the power is turned off or the message cannot be received, the short message is stored and forwarded in a specific memory in the SMSC 30 until the called terminal 60 can receive the message.

At this time, the SMSC 30 inquires the location information of the called terminal to the called side HLR 40 using the called terminal phone number information included in the received short message and delivers the short message through the called MSC 50. do. Also, a short message that has elapsed a certain time or a short message that has not been delivered by the message valid time is deleted from the memory.

The destination HLR 40 is a database (DB) in which the destination mobile communication network subscriber information is registered. The destination HLR 40 registers location information of the destination terminal, and stores subscriber information such as service profile, location information, and operation state of the mobile communication terminal. have.

When the called party MSC 50 receives the short message transmission request from the SMSC 30, the called party MSC 50 checks whether a traffic channel is formed in the called terminal 60 and determines whether the call is made. Then, when the called terminal 60 is in the idle mode, the short message is delivered.

2 is a flowchart illustrating a short message transmission to a mobile communication terminal in a call according to an embodiment of the present invention.

The calling terminal 10 requests a short message transmission to the SMSC 30 through the calling MSC 20 (S100). The originating terminal 10 inputs the calling terminal telephone number information and the called terminal telephone number information together with the message contents to be transmitted when generating the short message. The short message includes information such as a service identifier (TID: Teleservice Identifier), a bearer reply option, and bearer data.

The SMSC 30 stores the received short message in a specific memory, and when the called terminal 60 is not located in an area controlled by the calling MSC 20, the called terminal 60 included in the short message is received. Referring to the phone number information of), the receiving terminal 60 inquires the first registered MSC, and when the receiving terminal 60 finds the first registered MSC, the receiving side HLR 40 inquires it (S110). ).

Thereafter, the SMSC 30 makes a request for the location inquiry of the current destination terminal 60 to the destination side HLR 40 (S120).

The called party HLR 40 receives the request and inquires the called party MSC 50 that currently receives the called party 60 to inquire the location of the called party 60 and sends a location inquiry response to the SMSC 30. (S130).

When the SMSC 30 receives the location inquiry response, the SMSC 30 requests the called MSC 50 that receives the called terminal 60 to query the current call state of the called terminal 60 (S140).

Then, the called MSC 50 checks the call state of the called terminal 60 by checking whether a traffic channel is formed in the called terminal 60 (S150), and sends the current message to the SMSC 30. Send a call status inquiry response (S160).

The SMSC 30 receiving the current call state inquiry response checks whether the current call state of the called terminal 60 is in a call or in an idle mode (S170).

Then, when the SMSC 30 receives a response indicating that the called terminal 60 is busy as a result of the current state inquiry, the SMSC 30 waits for the transmission of the short message as in the deactivated state of the called terminal 60, and within the message validity period. Attempt to retransmit (S180). The deactivation state of the called terminal 60 is a short message, such as a case in which the power of the called terminal 60 is turned off, or when the call right is released or the calling terminal user inputs the telephone number of the called terminal 60 incorrectly when the short message is written. It is a state that reception is impossible.

At this time, the SMSC 30 checks the call state of the called terminal 60 to the called MSC 50 at a predetermined time interval within the validity period of the short message, during which the called terminal 60 terminated the call. Upon receiving the notification from the called MSC 50, the short message is transmitted.

On the other hand, when the SMSC 30 receives a response from the destination MSC 50 that the destination terminal 60 is in the idle mode, the SMSC 30 requests the short message transmission to the destination MSC 50 (S190).

Then, the called MSC 50 checks the position of the called terminal 60 and transmits the short message (S200).

As described above, after checking the current call state of the called terminal 60, the user receives the short message in the idle mode, so that the user of the called terminal 60 does not receive the short message during the call, such as a short message receiving notification sound and vibration. You can talk without interruption.

3 is a flowchart illustrating a short message transmission to a mobile communication terminal in a call according to another embodiment of the present invention. In FIG. 3, the position inquiry, the operation state, and the current call state inquiry of the called terminal 60 are not separately performed by the called party HLR 40 and the called party MSC 50, but the SMSC 30 is called by the called party HLR 40. To make these inquiry requests all at once.

In the present embodiment, the process of transmitting the short message to the SMSC 30 through the originating MSC 20 by the originating terminal 10 is the same as the process of FIG.

After the step S110 shown in FIG. 2, the SMSC 30 makes a request for inquiring of the location, operation state, and current call state of the called terminal 60 to the called-side HLR 40 (S400).

Upon receiving each inquiry request as described above, the called-side HLR 40 performs the position inquiry and operation status inquiry of the called terminal 60 and checks the called-side MSC 50 that accommodates the called terminal 60. In step S410, a current call state inquiry is requested.

Then, the called MSC 50 checks the state of the current called terminal and responds to the inquiry request from the called HLR 40 (S420).

Accordingly, the called party HLR 40 receiving the response from the called party MSC 50 passes the inquiry result of the location and operation state of the called terminal and the current call state to the SMSC 30 (S430).

After the SMSC 30 receives the response to determine the current call state of the called terminal 60 to determine whether to send the short message or to wait for transmission, the process of completing the short message transmission is described above with reference to S180 of FIG. 2. Same as the process after the step.

The technical spirit of the present invention has been described above with reference to the accompanying drawings. In addition, it is obvious that any person skilled in the art can make various modifications and imitations without departing from the scope of the technical idea of the present invention.

According to the present invention, when a short message is sent to a called terminal in a mobile communication system, the called terminal does not transmit a short message during a call. There is an effect that can solve the call, without being disturbed by the incoming notification sound.

In addition, when the user selects the vibration as a method of confirming the reception of the mobile communication terminal, if a short message is received during a call, there is an effect that can solve the problem of inconvenience to the user such as suddenly feel the vibration of the terminal.

Claims (6)

In the short message transmission method from the service center to the mobile communication terminal in the call,  A first step of receiving a short message transmitted from an originating terminal; A second step of determining a current location of a called terminal by using called party information of the received short message; A third step of identifying a current call state of the called terminal; A fourth step of transmitting the short message to the called terminal if the called terminal is in an idle mode as a result of determining the call state of the called terminal; And And a fifth step of transmitting the short message when the call of the called terminal is terminated after waiting for the short message transmission if the called terminal is busy. The method of claim 1, The third step is a method of transmitting a short message to a mobile communication terminal in a call, characterized in that the call to the mobile communication terminal receiving the current call state of the called terminal to determine the current call state of the called terminal. The method of claim 1, In the third step, the short message service center requests the called party's home location register to query the current call state of the called terminal; Requesting, by the called party's home location register, current call state information of the called terminal to a called mobile communication exchange and receiving a response thereof; The short message service center receiving a response to a current call state inquiry of the called terminal from the called home location register to determine a current call state of the called terminal; How to send short messages to. The method of claim 2, In step 5, to confirm that the call of the called terminal is terminated, the mobile communication switching center requests the called terminal to re-review the current call state of the called terminal at a predetermined time interval, and responds that the called terminal is in the idle mode. And receiving the short message when receiving the short message. The method of claim 3, In the fifth step, to confirm that the call of the called terminal has ended, request the called home position register to re-review the current call state of the called terminal at a predetermined time interval, and in response, the called terminal is in an idle mode. When receiving a short message transmission method to the mobile communication terminal, characterized in that for transmitting the short message. In the Short Message Service Center, A first step of receiving a short message transmitted from an originating terminal; A second step of determining a current location of a called terminal by using called party information of the received short message; A third step of identifying a current call state of the called terminal; A fourth step of transmitting the short message to the called terminal if the called terminal is in an idle mode as a result of determining the call state of the called terminal; And A computer-readable recording medium having recorded thereon a program for executing the fifth step of transmitting the short message when the call of the called terminal is terminated after waiting for the short message transmission if the called terminal is busy.

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