KR100637535B1 - Method of transmitting the not completed short message - Google Patents

Abstract

A method for transmitting incomplete short messages is provided to enable incomplete short messages which reach a time of abandonment to be stored in an SMS(Short Message Service) call keeper server interworked with an SMSC(SMS Center), so that the messages can be transmitted without being abandoned until a receiving-side terminal can receive the messages. When an incomplete short message which has not been transmitted to a receiving-side terminal(70) is received from an SMSC(30), the incomplete short message is stored(S10-S90). If the receiving terminal(70) is in abnormal state, the terminal state is re-inquired at preset certain time intervals, and if the receiving terminal(70) is in normal state, transmission of the incomplete short message is requested to an MSC(Mobile Switching Center)(60) where the receiving terminal(70) belongs(S100-S120). If a response informing that the incomplete short message is transmitted to the receiving terminal(70) is received, a process for the transmission of the incomplete short message is terminated(S130-S150).

Description

How to send an incomplete short message {Method of Transmitting the not completed short message}

1 is a configuration diagram of an embodiment of a mobile communication system to which the present invention is applied.

2 is a flowchart illustrating an embodiment of a method for transmitting an incomplete short message according to the present invention.

3 is a flowchart of another embodiment of an incomplete short message transmission method according to the present invention;

* Description of symbols on the main parts of the drawings *

30: Short Message Service Center 40: SMS Call Keeper Server

50: called party's home location register 60: called party's mobile switching center

The present invention relates to a method for transmitting a short message, and more particularly, an SMS callkeeper server interworking with an incomplete short message that has not been transmitted due to factors such as a terminal power off or a wireless channel error. The present invention relates to a method for transmitting an incomplete short message, wherein the terminal stores the short message and attempts to transmit the short message until the terminal can receive the short message.

In general, a short message service (SMS) is a service that can exchange short sentences between terminals. Through these short sentences, users can communicate with each other, and as a voice communication, one of the representative communication means is already firmly established.

The short message as described above is processed in the Short Message Service Center (SMSC) belonging to the mobile communication system.

When the short message service center receives the short message from the calling terminal (receives a request for transmission), it requests the terminal status and location lookup from the home location register by using the received telephone number of the short message. If it is On, the short message is transmitted to the called party's mobile telephone switching center so that the short message is transmitted to the called terminal.

On the other hand, the short message service center recognizes that the short message is not received by the called terminal when the power is turned off as a result of the terminal status received from the home location register, and stores the short message and attempts to transmit the short message at a predetermined time period. Repeat.

On the other hand, when the short message service center receives a short message from the called mobile telephone switching center as a result of the request for transmitting the short message to the called mobile switching center, the short message service recognizes that the short message cannot be received by the called terminal and stores the short message. Repeat the short message transmission attempt at a preset time period. Here, the short message transmitted from the short message service center to the called mobile telephone switching center is not transmitted to the called terminal mostly due to a channel error in the radio section between the called terminal and the base station. That is, the receiving mobile telephone switching station transmits a short message to the base station, but the short message is not transmitted to the called terminal due to a radio channel error occurred at the time of transmitting the short message in the base station and the receiving terminal period. Received that the short message was not normally received from the terminating terminal through the base station because it did not receive the short message to the receiving terminal to recognize that the short message is not sent to the short message service center.

As described above, the short message service center stores a short message when the short message is not transmitted to the called terminal due to factors such as terminal power off and wireless channel error, and repeats the short message transmission attempt at a predetermined time period. do.

However, in the prior art as described above, the short message service center repeatedly attempts to transmit the short message to the called terminal, but when a short time elapses from the point of storing the short message, the short message is regarded as an incomplete short message and stored. The short message is discarded and no further short message transmission attempt is performed. Accordingly, when the called party has turned off the terminal for a long time due to his or her own circumstances, or when staying in an area where radio channel errors frequently occur or a poor communication state such as a mountain area, the short message is not received.

As described above, the short message service center regards the short message that has not been transmitted to the called terminal as an incomplete short message even after a certain time has elapsed and discards it (ie, deletes the short message that has already been stored). This means that the short message service center should perform not only an incomplete short message processing but also a function such as receiving / receiving a large number of short messages from other terminals, checking the status of a terminal, retrieving a location, attempting to send, specifying a retransmission, and the like. In case of incomplete short message processing, cumulative short message may cause system load, and due to saturation of storage medium, other normal short message cannot be saved, which causes problems in short message processing. Therefore, the incomplete short message is discarded so that no further transmission attempt is performed.

Therefore, the short message service center can faithfully perform only the existing original functions, so that the called party must receive the incomplete short message as described above, and can reduce the system load of the short message service center and waste of storage space. There is a great need for a server that implements specialized functions.

The present invention has been proposed in order to solve the above problems and meet the above requirements, and is an incomplete short message that has not been transmitted due to a terminal power off, radio channel error, etc. and has been discarded. The present invention provides a method for transmitting an incomplete short message, which is stored in an SMS callkeeper server linked to the terminal and attempts to transmit the short message without discarding the terminal until the terminal can receive the short message. There is this.

A method of the present invention for achieving the above object is a method for transmitting an incomplete short message to a called terminal in an SMS callkeeper server linked to a short message service center, and has not been transmitted from the short message service center to the called terminal. A first step of storing the incomplete short message when an incomplete short message is received; In the state of storing the incomplete short message, if the abnormal terminal state as a result of inquiring the state of the called terminal through the home location register, the terminal state is re-inquired at a predetermined periodic interval, the home terminal register of the called terminal A second step of requesting transmission of the incomplete short message to a corresponding mobile telephone exchange station where a called terminal is accommodated if the normal terminal state is determined as a result of (re) looking up the state; And when the mobile terminal exchange receives a response that the incomplete short message is not transmitted to the called terminal as a result of requesting the transmission of the incomplete short message, the second step is performed, and the incomplete short message to the mobile switching center (re). And a third step of terminating the incomplete short message transmission process upon receiving a response indicating that the incomplete short message is transmitted to the called terminal as a result of the request for transmission.

Meanwhile, another method of the present invention is a method of transmitting an incomplete short message to a called terminal in an SMS callkeeper server linked to a short message service center, and an incomplete short message that is not transmitted from the short message service center to the called terminal. Storing the incomplete short message upon receiving the request, and requesting a home location register to notify the receiving location of the incoming terminal that is the target of the incomplete short message when the status is normal; A second step of requesting transmission of the incomplete short message to a corresponding mobile telephone exchange station in which the called terminal is accommodated when the state of the called terminal is notified from the home location register in the state of storing the incomplete short message; And when the mobile terminal exchange receives a response that the incomplete short message is not transmitted to the called terminal as a result of requesting the transmission of the incomplete short message, the second step is performed, and the incomplete short message to the mobile switching center (re). And a third step of terminating the incomplete short message transmission process upon receiving a response indicating that the incomplete short message is transmitted to the called terminal as a result of the request for transmission.

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 different according to intentions or customs of users and operators. Therefore, the definition should be made based on the contents throughout the specification.

1 is a configuration diagram of an embodiment of a mobile communication system to which the present invention is applied.

As shown in FIG. 1, a mobile communication system to which the present invention is applied includes a calling terminal 10, a calling mobile switching center (MSC) 20, and a short message service center (SMSC). 30), the SMS callkeeper server 40, the called party Home Location Register (HLR) 50, the called party mobile telephone switching center 60 and the called terminal 70. 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.

According to the present invention, the short message service center 30 does not transmit due to factors such as terminal power off, wireless channel error, and the like. 40), the SMS callkeeper server 40 stores the incomplete short message, and then the short message of the called terminal 70 through the called party's home location register 50 and the called mobile switching center 60. A service that transmits an incomplete short message to the called terminal 70 by attempting to transmit an incomplete short message until it can be received by checking whether it can be received [hereinafter, "SMS Call-Keeper Service ) ".

In order to receive the SMS callkeeper service, a user, preferably a user who has a receiving terminal 70 that receives a short message, can access the SMS callkeeper service through a website, a customer center, etc. operated by a mobile carrier. Join. The SMS callkeeper service subscriber information is preferably registered in the called party's home location register 50 through interworking between the customer information system (COIS) and the mobile communication system. On the other hand, according to the present invention it is possible to receive an incomplete short message to the user who is not subscribed to the SMS callkeeper service according to the SMS operation policy of the mobile communication company.

Particularly, in the present invention, a short message service center may be implemented by implementing a separate server for processing an incomplete message which is not processed by the short message service center 30, for example, an SMS call keeper server 40 that provides the present SMS call keeper service. Act on behalf of 30). That is, the SMS callkeeper server 40 is provided with the same authority as the short message service center 30 on the mobile communication system, and moves the existing mobile station such as the called party home location register 50 and the called party mobile telephone exchange 60. It works with the communication system to process incomplete short messages. The detailed description of the SMS callkeeper server 40 linked to the short message service center 30 will be described later in connection with related elements.

The short message service center 30 is a terminal operation state through the called party's home location register 50 for a short message that is requested to be transmitted from the calling terminal 10 through the calling party's mobile switching center 20 (eg; Check whether the power is on or off) and check the terminal communication status (e.g., whether a wireless channel error has occurred) through the called party's mobile switching center 60 until the called party can receive the short message. It performs the function of storing and forwarding.

In addition, the short message service center 30 is a short message even until the arrival of a predetermined discard time (that is, when a predetermined time elapses from the time of storing the short message received from the calling terminal 10). If it is not transmitted to the called terminal 70, the incomplete short message is discarded by deleting from the DB (not shown).

Therefore, in the present invention, if the user of the receiving terminal 70, the short message service center 30 is a subscriber of the SMS callkeeper service, the short message service center 30 attempts to transmit a short message several times as previously, but fails to transmit the message. Prior to deleting the incomplete short message that has reached the time of retirement, it is delivered to the SMS callkeeper server 40 to request processing of the service. In addition, the short message service center 30 preferably delivers the incomplete short message to the SMS callkeeper server 40, and then discards the incomplete short message as in the past to secure space of the DB.

In the present invention, the SMS callkeeper server 40 receives a short message (service processing request) received from the short message service center 30 (hereinafter, referred to as "incomplete short message", note; Short Message If defined by the service center side is incomplete short message, but defined in the SMS callkeeper server] is stored in the normal short message] and the terminal operation state through the called party's home location register (50) whether power on / off Etc.) and the terminal communication state (eg, whether a wireless channel error occurs) through the called-party mobile telephone switching center 60, and attempts to transmit the short message until the called party can receive the short message.

In particular, the SMS callkeeper server 40 defines the timing of discarding the incomplete short message until the called terminal 70 receives the incomplete short message so that the called terminal 70 receives the incomplete short message normally. Indefinitely stores incomplete short messages in its own DB (not shown). On the other hand, if the incomplete short message is sent to the called terminal 70 to secure the DB of the SMS callkeeper server 40, it is preferable to discard.

That is, the SMS callkeeper server 40 stores the incomplete short message indefinitely when an incomplete short message is not transmitted to the called terminal 70 due to factors such as terminal power off and wireless channel error. At a preset time period, the terminating terminal 70 repeats the transmission attempt process until it receives an incomplete short message.

On the other hand, the called party's home location register 50 has registered the called party's mobile communication subscriber information, and various additional service subscription matters, in particular, the SMS callkeeper service subscription matters of the present invention are registered. In addition, the called party home location register 50 registers a voice call service, subscriber location information necessary for SMS processing, a terminal operating state (whether power is on or off), and the like.

Meanwhile, the called party's mobile telephone switching center 60 transmits a short message received from the short message service center 30, an incomplete short message received from the SMS callkeeper server 40 to the corresponding base station (not shown). Transmitting to the receiving terminal 70 through a short message service center 30 or SMS callkeeper when the base station, the base station controller, etc. is notified of the short message transmission due to a radio channel error between the base station and the receiving terminal 70 at this time. The short message is not sent to the server 40 to inform the destination terminal 70 that the short message has not been transmitted. The short message service center 30 or the SMS call keeper server 40 are not in good communication with the terminal through the short message response of the called party's mobile switching center 60 (e.g., radio channel error, note; Rather than generating a signal transmission error in the wired section between the mobile switching center and the base station, the mobile communication network mostly generates a signal transmission error in the wireless section of the base station and the terminating terminal period.

2 is a flowchart illustrating a method of transmitting an incomplete short message according to the present invention.

First, the calling terminal 10 transmits the short message to the short message service center 30 through the calling mobile telephone switching center 20 (S10). Here, the calling terminal 10 refers to a mobile phone. In another example, a caller accesses an SMS service providing website through a computer instead of his own mobile phone, composes a short message, and sends a receiver to the call of the called terminal 70. You can also send a short message by specifying the number.

Then, the short message service center 30 stores the short message received from the calling mobile phone switching center 20 in a DB, and additional service (SMS call) of the called terminal 70 to the called party's home location register 50. Keeper service) requests whether to subscribe and location lookup (S20). Here, the short message service center 30 uses the well-known SMS Request Message, together with the terminal location, whether the terminating terminal 70 subscribes to the SMS callkeeper service and the terminal operation status (eg, terminal power on / off, etc.). Ask for inquiry.

Accordingly, the short message service center 30 receives a response from the called party home location register 50 that the called terminal 70 is subscribed to the SMS callkeeper service, the terminal operation status, and terminal location information. Example that the terminal power is on] (S30).

Accordingly, the short message service center 30 requests the short message transmission to the called party's mobile switching center 60 corresponding to the terminal location information (S40). On the other hand, when the short message service center 30 receives a response that the terminal power is turned off through the home location register 50, the transmission is temporarily suspended and the short message transmission process is performed at a preset next cycle.

Accordingly, the called party mobile telephone switching center 60 attempts to process a short message through a base station accommodating the called terminal 70, but the terminal communication state is not good, for example, a radio channel error between the base station and the called terminal 70. Is generated and receives a short message non-receipt response of the called terminal 70 through the base station, it is regarded as a short message non-transmission and sends a short message non-transmission response to the short message service center 30 (S50, S60). On the other hand, when the receiving side mobile telephone switching center 60 receives the short message reception response of the terminating terminal 70 through the base station as a result of transmitting the short message to the terminating terminal 70 through the base station, the short message in the "S60 process" The transmission response is sent to the short message service center 30.

Accordingly, when the short message service center 30 checks the terminal operation state through the called party home location register 50 and the power is turned off, the short message service center 30 requests a short message transmission to the called party's mobile switching center 60. As a result, when a short message is not transmitted, a process of repeatedly attempting to transmit a short message to the called terminal 70 at a predetermined cycle is repeatedly performed (that is, a terminal operation state and a location inquiry request process of step S20). To repeat the process of receiving a short message transmission request of the "S40 process" and a response thereto.

As described above, when a short message stored in the DB is repeatedly transmitted to the called terminal 70 several times, but fails to transmit the short message to the called terminal 70 until the predetermined discarding time arrives, the short message service is performed. The center 30 defines the short message as an incomplete short message and processes the service by delivering the incomplete short message to the SMS call keeper server 40 based on the subscriber's subscription to the SMS call keeper service of the "S20 process". Request (S70, S80). In addition, the short message service center 30 preferably delivers the incomplete short message to the SMS callkeeper server 40, and then discards the incomplete short message as in the past to secure the space of the DB (S85).

Accordingly, the SMS callkeeper server 40 defines a storage period until the receiving terminal 70 receives the incomplete short message for the incomplete short message received from the short message service center 30. Store in the DB (S90). Thereafter, the SMS callkeeper server 40 repeatedly performs the process of attempting transmission until the receiving terminal 70 is received without discarding the stored incomplete short message.

That is, first, the SMS callkeeper server 40 requests a terminal operation state and location lookup of the called terminal 70 from the called party's home location register 50 (S100). Here, the SMS callkeeper server 40 requests an inquiry of a terminal operation state (eg, terminal power on / off, etc.) of the called terminal 70 together with the terminal location using a known SMS Request Message.

Then, the SMS callkeeper server 40 attempts to transmit an incomplete short message at a predetermined periodic interval when the terminal operation state received from the called party's home location register 50 is abnormal, for example, when the terminal power is turned off. Proceeds to step "S100", and when the terminal operation state received from the called party home location register 50 is normal, for example, when the terminal power is turned on, the called party mobile phone switching center 60 corresponds to the terminal location information. Short message transmission request (S110, S115, S120).

Then, the SMS callkeeper server 40 receives a response that the incomplete short message was not received from the called party's mobile switching center 60 as a result of requesting short message transmission to the called party's mobile switching center 60. After the process of transmitting the incomplete short message at a predetermined periodic interval, the process “S100” is performed. When the incomplete short message is received from the called mobile phone switching center 60, the incomplete short message is normally received. The terminal 70 recognizes that it has been received and terminates the incomplete short message transmission process, and in particular, discards the incomplete short message previously stored (S130, S140, S150). As such, it is preferable to secure the DB space of the SMS callkeeper server 40 by deleting the incomplete short message normally transmitted to the called terminal 70.

3 is a flowchart illustrating another embodiment of an incomplete short message transmission method according to the present invention.

Meanwhile, according to another embodiment of the present invention, the short message service center 30 transmits the short message that has reached the time of disposal to the SMS callkeeper server 40 and the short message service center 30 is the called party's home location register. The incomplete short message may be stored to the SMS callkeeper server 40 and the receiving terminal number of the incomplete short message may be informed to the 50. As another example, when the SMS callkeeper server 40 receives an incomplete short message from the short message service center 30, the incomplete short message is sent to the called party's home location register 50 by the SMS callkeeper server 40. ) And the phone number of the receiving terminal of this incomplete short message.

That is, the called party home location register 50 that has received such a notification notifies the SMS callkeeper server 40 that the SMS call keeper server 40 can receive the SMS when the corresponding called terminal can receive the short message, for example, when the terminal is powered on. [SMS Notification]. Accordingly, the SMS callkeeper server 40 transmits an incomplete short message to a corresponding destination terminal as the SMS homekeeper register 40 is notified of the possibility of sending an SMS.

In more detail, in the embodiment of the present invention, the SMS callkeeper server 40 periodically queries the destination state of the called terminal receiving the incomplete short message to the called party's home location register 50 and if there is no response, continuously The receiving terminal power state query process is repeatedly performed. In this case, the system call load may be increased on the SMS callkeeper server 40 and the called party home location register 50.

In consideration of the above, in another embodiment of the present invention, instead of preventing the SMS callkeeper server 40 from performing a separate terminating terminal power state query process, the terminating side home location register 50 is powered by the terminating terminal. When it is turned on, the process of notifying the SMS callkeeper server 40 has been added. Here, in the mobile communication system, when the mobile communication terminal is powered on, the terminal location is registered to the home location register. Through this, the destination home location register 50 does not perform a separate process. You can tell whether or not.

Another embodiment of the present invention described above is illustrated in FIG. 3, which will be described below.

The SMS callkeeper server 40 receiving the incomplete short message reaching the disposal time from the short message service center 30 in steps S200 to S290 is that the incomplete short message is stored in the SMS callkeeper server 40. While notifying the reception terminal terminal number of the incomplete short message, and when the power of the terminating terminal 70 is instructed to notify the receiving party home location register (50) (S300).

Accordingly, the called party home location register 50 responds to the SMS callkeeper server 40 with an SMS transmission fact [SMS Notification] when the called terminal 70 is powered on, and the SMS callkeeper server ( 40 continuously waits for a response from the called home position register 50 that the called terminal 70 is powered on (S310).

While waiting for the SMS transmission possible response as described above, when the response from the called party home location register 50 is received that the called terminal 70 is powered on, the SMS callkeeper server 40 moves to the called party corresponding to the terminal location information. By requesting the short message transmission to the telephone exchange office 60, it is checked whether the response to this is a response indicating that an incomplete short message is transmitted or a response that the incomplete short message has not been transmitted (S320, S330, S340, and S350).

As a result of the incomplete short message transmission response test result from the called party's mobile telephone switching station 60, the SMS callkeeper server 40 sends an incomplete short message to the called terminal 70 normally. The incomplete short message transmission process is terminated by recognizing that the received short message is received, and in particular, the incomplete short message previously stored is discarded (S360).

On the other hand, as a result of the incomplete short message transmission response check result from the called party's mobile telephone switching station 60, the SMS callkeeper server 40 proceeds to the S310 process if the response is that the incomplete short message was not transmitted. It waits for an SMS sendable fact response from the side home location register 50 and attempts to send an incomplete short message in the next cycle.

Although the contents of the present invention have been described with reference to the embodiments, the embodiments of the present invention are merely illustrative of the present invention and should not be construed as limiting the scope of the present invention. Those skilled in the art to which the present invention pertains may modify or alter the present invention in various forms within the spirit and scope described in the claims herein.

As described above, the present invention enables the receiver to receive an incomplete short message that is not transmitted due to the circumstances of the called party (eg, terminal power off, etc.) and the radio wave environment (eg, wireless channel error, etc.). It also has the effect of reducing the system load of the short message service center and wasting storage space.

Claims (5)

Short message As a method of transmitting an incomplete short message to the receiving terminal from the SMS callkeeper server linked to the service center, A first step of storing the incomplete short message upon receiving an incomplete short message which is not transmitted to the called terminal from the short message service center; In the state of storing the incomplete short message, if the abnormal terminal state as a result of inquiring the state of the called terminal through the home location register, the terminal state is re-inquired at a predetermined periodic interval, the home terminal register of the called terminal A second step of requesting transmission of the incomplete short message to a corresponding mobile telephone exchange station where a called terminal is accommodated if the normal terminal state is determined as a result of (re) looking up the state; And If the mobile telephone exchange receives a response that the incomplete short message is not received from the called terminal as a result of requesting the transmission of the incomplete short message, the second step is performed, and the incomplete short message (re) is transmitted to the mobile switching center. A third step of terminating the incomplete short message transmission process upon receiving a response indicating that the incomplete short message has been transmitted to the called terminal as a result of requesting the request; Incomplete short message transmission method comprising a. Short message As a method of transmitting an incomplete short message to the receiving terminal from the SMS callkeeper server linked to the service center, When an incomplete short message is received from the short message service center, which is not transmitted to the called terminal, the incomplete short message is stored, and the home location register is notified when the called terminal status of the incomplete short message is normal. A first step requesting a week; A second step of requesting transmission of the incomplete short message to a corresponding mobile telephone exchange station in which the called terminal is accommodated when the state of the called terminal is notified from the home location register in the state of storing the incomplete short message; And If the mobile telephone exchange receives a response that the incomplete short message is not received from the called terminal as a result of requesting the transmission of the incomplete short message, the second step is performed, and the incomplete short message (re) is transmitted to the mobile switching center. A third step of terminating the incomplete short message transmission process upon receiving a response indicating that the incomplete short message has been transmitted to the called terminal as a result of requesting the request; Incomplete short message transmission method comprising a. The method according to claim 1 or 2, And the storage period of the incomplete short message is set to a time point at which the incomplete short message is normally received at the called terminal. The method according to claim 1 or 2, If the short message service center fails as a result of attempting to transmit the short message and the predetermined discarding time arrives, the short message is defined as an incomplete short message and is discarded after being delivered to the SMS callkeeper server. How to send short messages. The method according to claim 1 or 2, In the short message service center, when an incoming terminal user is subscribed to the service through a home location register, an incomplete short message that has been disposed of is delivered to the SMS callkeeper server, thereby requesting processing of the service. How to send a short message.

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