KR20110057504A - Method and system for providing instant messaging service - Google Patents

Abstract

Provided are an instant messaging service providing system and method for providing instant messaging (IM) services between terminals having different conversation types. According to an embodiment of the present invention, an IM server for establishing and managing a chat session for providing an IM service; If the called terminal is a terminal that cannot use the IM service, the IM message received from the calling terminal is converted into a short message (SM) format, and the waiting time for acknowledging the converted chat message is converted into the dialogue. An IM gateway that changes to match the acknowledgment wait time of the session; And an SM server configured to apply the changed acknowledgment waiting time to transmit the converted SM type conversation message to the called terminal.

Instant messaging, short message, IM server, IM gateway.

Description

Method and system for providing instant messaging service

The present invention relates to an instant messaging service, and more particularly, to an instant messaging service providing system and method for providing an instant messaging (IM) service between terminals having different conversation formats.

In recent years, Instant Messaging (IM) service has been in the spotlight as a service capable of overcoming the non-real time of E-mail.

An instant messaging service is a service that checks whether the other party is currently connected to the Internet and realizes two-way communication in the cyber space such as one-on-one conversation, chat, and group composition in real time.

In addition, recently, a wireless Internet service for providing an Internet communication service to a mobile communication subscriber through a wireless communication network has emerged. As one of such wireless Internet services, the demand for mobile instant messaging service is increasing day by day.

The mobile messenger basically provides a session-type conversation service assuming a network connection, and can deliver a conversation content even to a non-session terminal that cannot connect to the session.

However, non-session-based conversation formats such as SMS / MMS can reply to session-based conversations. However, the conversation management method is different because the session-type acknowledgment wait time and SMS acknowledgment wait time are different. There is a difficulty.

For example, SMS / MMS has a 24 hour acknowledgment wait time compared to a session method having an acknowledgment wait time of about 30 seconds on average, during which a periodic message retransmission is performed.

For this reason, if the acknowledgment message is not returned even after 30 seconds have elapsed, the session may be terminated, but an error may occur in a service in which SMS is normally transmitted. Alternatively, a problem may occur in that the waiting time of the session is long and the retention time of the session information is long.

The present invention provides an instant messaging service providing system and method for more stable and reliable operation of instant messaging (IM) services between terminals having different conversational formats.

In addition, the present invention, in the case of converting / transmitting or replying to a session conversation by SMS / MMS or the like, changes the delivery method of the conversation to SMS / MMS only by changing the acknowledgment waiting time of the SMS / MMS to be the same as the session method. And the management method provides an instant messaging service providing system and method that can operate in the same manner as the session method.

In addition, the present invention provides a system and method for providing an instant messaging service that can grasp not only the conversation format of the called terminal, but also the conversation format of the calling terminal.

Other objects of the present invention will be readily understood through the following description.

According to an aspect of the present invention, there is provided an instant messaging service providing system for providing an instant messaging (IM) service between terminals having different conversation formats.

According to an embodiment of the present invention, an IM server for establishing and managing a chat session for providing an IM service; If the called terminal is a terminal that cannot use the IM service, the IM message received from the calling terminal is converted into a short message (SM) format, and the waiting time for acknowledging the converted chat message is converted into the dialogue. An IM gateway that changes to match the acknowledgment wait time of the session; And an SM server configured to apply the changed acknowledgment waiting time to transmit the converted SM type conversation message to the called terminal.

According to another embodiment of the present invention, an IM server for establishing and managing a chat session for providing an IM service; And when a reply message in the form of a Short Message (SM) is received from the called terminal after the conversation session established in response to the conversation request of the calling terminal is terminated, the incoming call is sent to the conversation request for re-establishment of the conversation session. The SM format may be transmitted to the IM server by adding information regarding a conversational format of the terminal, and a reply message received from the called terminal may be transmitted to the calling terminal through a conversation session re-opened according to the conversation request. An instant messaging service providing system may be provided that includes an IM gateway for converting a reply message to an IM format.

Here, when the IM format is not included in the conversation possible format of the called terminal, the IM gateway converts the IM message received from the originating terminal into a SM format, and confirms receipt of the converted conversation message. The waiting time may be changed to be equal to the acknowledgment waiting time of the re-established chat session.

The present invention has the effect of providing an instant messaging service providing system and method for more stable and reliable operation of instant messaging (IM) services between terminals having different conversation formats.

In addition, the present invention has an effect of reducing the session information management time waited on the basis of the SMS acknowledgment wait time for the message sent to the SMS to receive the MSRP REPORT to the session completion processing; have.

In addition, the present invention can recognize at the server level the information of the calling terminal that the conversation method is changed from session-based to non-session-based, and thus more precisely the conversation / invitation / management operation with one or more chat partner It is effective to operate.

The present invention may be variously modified and have various embodiments, and specific embodiments will be illustrated in the drawings and described in detail with reference to the accompanying drawings. However, this is not intended to limit the present invention to specific embodiments, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, when it is determined that the detailed description of the related known technology may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. In addition, numerals (eg, first, second, etc.) used in the description process of the present specification are merely identification symbols for distinguishing one component from another component.

In addition, in the present specification, when one component is referred to as "connected" or "connected" with another component, the one component may be directly connected or directly connected to the other component, It is to be understood that unless otherwise specifically described, there may be connected or connected via another component in the middle.

Hereinafter, a method and a system for providing an instant messaging service according to embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram schematically illustrating a configuration of an IMS network based communication system using SIP in connection with an instant messaging service of the present invention.

Referring to FIG. 1, an IMS network-based communication system for providing an instant messaging (hereinafter referred to as IM) service includes a communication terminal 10, 11, 20, 21, a CSCF 70, and a communication terminal. An IMS core 60 including an HSS 80, an IMS application server (hereinafter abbreviated as AS 90) including a presence (PS) server 210 and an IM server 200, and It may be configured to include an IM gateway 300 and a Short Message (SM) server (hereinafter, abbreviated as SMSC 400). In FIG. 1, the SMSC 400 is shown separately from the mobile communication network 50, but this is only for convenience of illustration and description.

IMS (IP Multimedia Subsystem) is introduced to provide an IP-based integrated communication service, and is a core technology for providing a new communication service in an ALL-IP network-based communication environment.

The IMS is based on the Session Initiation Protocol (SIP), which is a text-based application layer control protocol. SIP is based on a client / server architecture in which the server responds when clients initiate a call. The IMS can provide a high speed packet data service capable of transmitting instant messaging, e-mail, still images, and large-capacity digital multimedia data to a mobile terminal as well as a conventional voice call service.

The IMS can comply with the specifications of 3GPP (3 ^rd Generation Partnership Project) basis. However, it is a matter of course that the present invention is not limited by the 3GPP-based standard. For example, IMS is a concept defined in 3GPP defining GSM and WCDMA, and 3GPP2 defining CDMA and the like defines a function similar to the IMS as MMD (Multimedia Domain).

That is, embodiments of the present invention described below will be described based on IMS, but the same may be applied to the MMD.

IMS is a system for providing an IP multimedia integrated service to a communication terminal according to the received IP packet, and includes a call session control device (CSCF, abbreviated as CSCF) 70, a home subscriber server (HSS, Home Subscriber Server (hereinafter abbreviated as HSS) 80 and Application Server (AS) 90. Here, the CSCF 70 and the HSS 80 constitute the core network 60 of the IMS.

The CSCF 70 performs basic functions for controlling a session session based on a session initiation protocol (SIP), and includes a proxy CSCF (abbreviated as P-CSCF) and an interrogating CSCF (hereinafter referred to as "CF-CSCF"). I-CSCF), and serving CSCF (Serving-CSCF, hereinafter abbreviated as S-CSCF).

P-CSCF is the first point where a communication terminal accesses IMS. When the P-CSCF receives a register request message from the communication terminal, the P-CSCF forwards it to the I-CSCF. In addition, the P-CSCF may forward the S-CSCF when an invite request message is received from the communication terminal.

The I-CSCF obtains the address list of the S-CSCF available from the HSS 80 in the process of registering the user of the communication terminal, that is, the subscriber, and determines the S-CSCF to be in charge of the actual registration with reference to this.

When the registration request message is received from the I-CSCF, the S-CSCF registers the subscriber with the HSS 80 and obtains the subscriber profile from the HSS 80. The S-CSCF checks the type of service to be provided to the communication terminal using the subscriber profile, and performs triggering on the AS 90 that will actually support the confirmed service.

The HSS 80 is a master database of subscribers, and stores and manages subscriber profile, authentication and location related data, and provides information required by the I-CSCF or S-CSCF.

The AS 90 is a server having substantial service logic and may support IP multimedia services according to the service logic that it has. Examples of IP multimedia services supported by the AS 90 may include a Voice over Internet Protocol (VoIP) service, a video call service, an instant message service, and various session-based multimedia services.

In connection with the present invention, the AS 90 comprises, in FIG. 1, an Instant Messaging (IM) server 200 and a PS server 210. Here, the PS server 210 manages the current state of the conversation partner. The IM server 200 is responsible for the actual call processing related to the conversation between the conversation partners of the instant messaging service.

The IM gateway 300 is a protocol conversion gateway for compatibility between the IM server 200 and messengers whose protocols do not match. That is, there is an IM gateway 300 between the IM server 200 and the communication terminal, which serves to support messengers having different protocols.

In the communication terminal having a messenger function, for example, as shown in FIG. 1, the wired messenger client terminals 20 and 21 exist, and the wireless messenger client terminal 11 also exists. In addition, there may also be a wireless terminal 10 that cannot use the IM service, such as when it is not equipped with a messenger program for an instant messaging service or when the program is loaded but not subscribed to an instant messaging service.

Therefore, there may occur a case where communication protocols for an instant messaging service do not match between communication terminals intending to use the instant messaging service. For example, as another example, when the conversation counterpart is a terminal that cannot use the IM service, it is necessary to convert the IM message into a SMS or MMS format.

In order to solve the above problem, the IM gateway 300, when the conversation counterpart is a non-session conversation terminal, converts the IM conversation message into SMS / MMS and transmits the conversation contents. On the contrary, when the non-session conversation terminal sends the conversation contents to the SMS / MMS, the IM gateway 300 converts the SMS / MMS into session-based conversation contents and transmits the contents to the session terminal which is the conversation counterpart.

The above-mentioned protocol mismatch problem may also occur because of different service providers or telecommunication providers that provide instant messaging services. This mismatch problem may also be solved through the IM gateway 300.

The Short Message Service Center (SMSC) 400 serves to deliver the contents of the conversation delivered to the terminal that cannot use the instant messaging service (for example, the terminal that cannot connect to the session) to the SMS. That is, the SMSC 400 performs a function of actually transmitting a message regarding a conversation content converted into an SMS / MMS format by the IM gateway 300 to a called terminal which is a conversation counterpart.

2 is a view for explaining a general operation method when providing an instant messaging service between terminals having the same conversational format.

In FIG. 2, it is assumed that the calling terminal 110 (UE A) and the called terminal 130 (UE C) are both terminals capable of supporting sessions for use of an instant messaging service.

In response to a conversation request for using an instant messaging (IM) service by a user of the calling terminal 110, the calling terminal 110 transmits a chat invitation message (INVITE) to the IM server 200 [S11]. . The IM server 200 receiving the conversation invitation message INVITE transmits it back to the called terminal 130 [S12].

Here, INVITE is one of SIP requests for a conversation request (that is, a request for opening a conversation session), and through this request, the messenger wakes up.

Accordingly, the destination terminal 130 transmits a reception confirmation message 200 OK for the conversation invitation message INVITE to the IM server 200 [S13], and the reception confirmation message 200 OK is again sent to the calling terminal ( 110) [S14]. Through this process, a conversation session is established (connected) between the calling terminal 110 and the called terminal 130.

When the calling terminal 110 transmits a SEND message (MSRP SEND) for transmitting the contents of the conversation to the IM server 200 through the established conversation session [S15], the IM server 200 returns the received terminal 130 again. [S16].

Here, MSRP (Message Session Relay Protocol) is a protocol for transmitting IM conversation contents, and MSRP SEND means transmission of a conversation message. Therefore, the MSRP SEND also includes the contents of the actual conversation message input from the calling terminal 110 side.

The receiving terminal 130 receiving the SEND message (MSRP SEND) transmits a reception acknowledgment message (200 OK) for this [S17], and the IM server 200 receiving the SEND message (SRP) sends it back to the calling terminal (110). [S18].

Thereafter, the called terminal 130 transmits the received report report message (MSRP REPORT) message as a response to the MSRP SEND via the IM server 200 within the predetermined receiving report time [S19], to the calling terminal 110 [ S20]. The originating terminal 110 which has received such a reception report report message (MSRP REPORT) also transmits a receipt confirmation message (200 OK) for this again via the IM server 200 [S21] and transmits to the called terminal 130 [S22]. ].

Here, the MSRP REPORT includes information on the actual reception state (eg, normal reception, abnormal reception, non-receipt, etc.) for the conversation message transmitted from the originating terminal 100. This MSRP REPORT must be made within a predetermined reception report time (eg, 30 seconds) after the MSRP SEND is transmitted.

If the MSRP REPORT is not made within the predetermined reception report time, the IM server 200 is designed to terminate the conversation session established in response to the conversation request of the originating terminal 110.

However, in the case of FIG. 2 described above, since both the originating terminal 110 and the terminating terminal 130 are terminals capable of supporting sessions so that IM service can be used (that is, terminals having the same conversation type), the originating terminal 110 is used. ) And the reception waiting time (that is, the reception report time) of the conversation session does not occur.

On the contrary, since the originating terminal and the terminating terminal use different types of conversations in using the IM service, a problem may arise due to the difference in the acknowledgment waiting time. This will be described below with reference to FIGS. 3 and 4.

3 and 4 are diagrams for explaining a general operation method when providing an instant messaging service between terminals having different conversation formats.

3 and 4, an operation method for providing an IM service between terminals having different conversation formats (that is, a method of establishing a conversation session and a method of delivering contents of a conversation) itself is not significantly different from that of FIG. 2 described above. However, there is a difference in that an IM service is provided between terminals having different conversation formats through the IM gateway 300.

3 and 4 (hereinafter, the same as in FIGS. 5 to 7), the originating terminal 110 (UE A) is a terminal capable of supporting sessions for the use of IM service, and the called terminal 120 (UE B). Assumes that the terminal is not capable of supporting sessions.

Referring to FIG. 3, as the calling terminal 110 invites a specific called terminal to talk [S31], the IM gateway 300 transmits a chat invitation message (INVITE) to the IM server 200 [S32].

Accordingly, the IM server 200 adds the information (Allow-Im-Type: session, sms) about the format available to the conversation invitation message (INVITE) to the IM gateway 300 [S33].

The IM gateway associated with the originating terminal side and the IM gateway associated with the called terminal side may be different from each other. However, for the sake of convenience of explanation, the same reference numerals will be given to the calling terminal IM gateway and the called terminal IM gateway. Of course, both may be the same IM gateway.

The recipient terminal side IM gateway 300 receiving the conversation invitation message INVITE transmits a receipt confirmation message 200 OK thereto to the IM server 200 [S34].

In this case, the reception acknowledgment message 200 OK is added with information on the conversation format available to the called terminal 120 (see Accepted-Im-Type: sms). Accordingly, the IM server 200 that receives the acknowledgment message 200 OK may recognize that the called terminal 120 is a terminal that cannot support session (ie, a terminal that cannot use IM service) at that time. do.

The acknowledgment message 200 OK is transmitted to the originating terminal side IM gateway 300 again [S35], and the IM gateway 300 notifies the originating terminal 110 that the conversation invitation is successful [S36]. Through this process, a conversation session for using an IM service is established between the calling terminal 110 and the called terminal 120 (exactly, the called terminal IM gateway 300).

Then, when the conversation message (MSRP SEND) of the originating terminal 100 is transmitted [S37], the receiving terminal side IM gateway 300 receives the instant messaging (IM) format conversation message transmitted from the originating terminal (110). Is converted into a short message (SM) format that is a conversational format in the terminating terminal 120 and transmits it to the terminating terminal 120 [S38].

In actual transmission of the converted short message (SM) format conversation message to the destination terminal 120, although not shown in FIG. 3 (FIG. 4 is the same) for convenience of drawing, the destination terminal side IM gateway 300 The SMSC 400 further exists between the destination terminal and the destination terminal 120.

The receiving terminal 120 receiving the SM-type conversation message transmits an acknowledgment message (ACK) to the IM gateway 300 [S39], and thus, the receiving terminal side IM gateway 300 receives the receiving report report message. The MSRP REPORT is transmitted to the calling terminal 110 [S40].

At this time, in the case of Figure 3, the acknowledgment message (ACK) from the destination terminal 120 that has received the SM-type conversation message, the acknowledgment waiting time of the established conversation session (that is, the report time of the reception report report, It is assumed that the response is returned within approximately 30 seconds). This case does not arise from the difference between the wait time of acknowledgment of IM type and SM type.

On the contrary, in the case of FIG. 4 (S31 to S38 are the same as FIG. 3), the session wait time for the chat message MSRP SEND received from the calling terminal 110 (that is, the wait time for acknowledgment of the chat session (receive) After the elapse of 30 minutes), the acknowledgment messages (ACK, S43) for the SM message have arrived at the destination terminal side IM gateway 300.

In the case of FIG. 4, since the reception report report message MSRP REPORT has not been received until the acknowledgment wait time of the conversation session has elapsed, the previously established chat session is in a terminated state [S42]. Therefore, even after an acknowledgment message (ACK) has been received for the SMS after the conversation session is terminated, the acknowledgment message cannot be delivered to the calling terminal 110. Accordingly, although the terminating terminal 120 normally receives the SMS, the conversation session is terminated because the reception time is later than the "acknowledgment wait time of the conversation session".

The problem is that the acknowledgment wait time for a chat session to process an IM format chat message is only about 30 seconds, while the acknowledgment wait time for an SM format chat message (i.e. SMS message) is almost 24 hours. This is due to the fact that the reception acknowledgment time is differently set.

The instant messaging providing method and system according to the present invention devised to solve the above problems will be described with reference to FIG.

5 is a view for explaining an instant messaging service providing system and a method for providing a service according to an embodiment of the present invention for providing an instant messaging service between terminals having different conversational formats.

Referring to FIG. 5, an instant messaging service providing method according to an embodiment of the present invention, S31 to S37, are based on the same process as described with reference to FIGS. 3 and 4.

That is, as the calling terminal 110 invites a specific called terminal to talk [S31], the IM gateway 300 transmits a chat invitation message (INVITE) to the IM server 200 [S32]. In response, the IM server 200 adds information (Allow-Im-Type: session, sms) on a conversational format to the IM invitation 300 to the conversation invitation message INVITE and transmits it to the IM gateway 300 [S33].

The recipient terminal side IM gateway 300 receiving the conversation invitation message INVITE transmits a receipt confirmation message 200 OK thereto to the IM server 200 [S34].

In this case, the reception acknowledgment message 200 OK is added with information on the conversation format available to the called terminal 120 (see Accepted-Im-Type: sms). Accordingly, the IM server 200 that receives the acknowledgment message 200 OK may recognize that the called terminal 120 is a terminal that cannot support session (ie, a terminal that cannot use IM service) at that time. do.

The acknowledgment message 200 OK is transmitted to the originating terminal side IM gateway 300 again [S35], and the IM gateway 300 notifies the originating terminal 110 that the conversation invitation is successful [S36]. Through this process, a conversation session for using an IM service is established between the calling terminal 110 and the called terminal 120 (exactly, the called terminal IM gateway 300).

Thereafter, when the conversation message MSRP SEND of the calling terminal 100 is transmitted [S37], the IM gateway 300 changes the acknowledgment waiting time of the SMS message to be equal to the acknowledgment waiting time of the established conversation session. [S45].

Here, the reception wait time of the conversation session is the IM server when the reception report report (see MSRP REPORT, S48) for the IM format conversation message (MSRP SEND) is not received from the destination terminal 120. It refers to a reception report time (for example, about 30 seconds) which is set in advance by the 200 to terminate the conversation session.

The change in the acknowledgment wait time at the IM gateway 300 can be made by, for example, calling an API function such as send_sms_function to change (adjust) an offset value with respect to the acknowledgment wait time of the SMS message. have.

As described above, if the acknowledgment wait time of the SMS message is changed to be the same as the acknowledgment wait time of the chat session, the SMSC 400 applies this change to the system, so that the SMS message (that is, the originating terminal 100) is changed. The conversation message converted from the IM format transmitted from the IM format to the SM format through the IM gateway 300 is transmitted to the called terminal 120 [S46].

Accordingly, the SMSC 400 applies the changed acknowledgment wait time to the SMS message, thereby continuously retransmitting the message continuously (periodically) to a message that has a waiting time of about 24 hours in the past and has not been normally received. Unlike the above, if the acknowledgment messages (ACK, S47) are not received within the acknowledgment waiting time of about 30 seconds, retransmission of the SMS message can be stopped and the SMS message can be deleted.

Therefore, as in the conventional case, although the chat session is terminated due to the elapsed wait time of the acknowledgment of the chat session, the receiving terminal side normally receives the SMS message afterwards due to a longer reception wait time of the SMS message. The error problem (the morning moon problem in the dialogue) that can be solved can be solved according to the present invention. Therefore, according to the instant messaging service providing method and system according to the embodiment of the present invention, it is possible to greatly improve the reliability in providing IM service.

In the above, the method and system for providing an instant messaging service according to an embodiment of the present invention have been described by comparing FIGS. 3 and 4 with FIG. 5. Hereinafter, a method and system for providing an instant messaging service according to another embodiment of the present invention will be described by comparing FIG. 6 with FIG. 7.

6 and 7 relate to a service providing process assuming that an SMS reply message is received from a called terminal after a conversation session established by a calling request of the calling terminal is terminated.

6 is a view for explaining the general operation of the instant messaging service providing method between the different terminals when the chat session is re-established as the SMS message is returned from the called terminal after the chat session ends.

If the SMS reply message is received from the terminating terminal 120 after the conversation session, which was previously established for providing the IM service, is terminated [S61], the IM gateway 300 reopens the terminated conversation session. The conversation invitation message (INVITE) is transmitted to the IM server 200 [S62].

In this case, the IM server 200 adds information related to a conversation type (Allow-Im-Type: session, sms) to the conversation invitation message (INVITE) and transmits it to the originating terminal side IM gateway 300. [S63].

Upon receiving the conversation invitation message INVITE, the originating terminal side IM gateway 300 notifies the originating terminal 110 of the conversation invitation [S64], and receives an invitation response thereto from the originating terminal 110 [S65]. .

In response to the invitation response, the IM gateway 300 transmits a reply message (200 OK) for the dialogue invitation to the IM server 200 [S66]. In this case, the response message 200 OK includes information on the conversation format of the calling terminal 110 (see Accepted-Im-Type: session). This reply message 200 OK is delivered to the destination terminal side IM gateway 300 [S67], whereby the conversation session that was previously terminated is reopened.

Through the re-established conversation session as described above, the destination terminal side IM gateway 300 converts the SMS message returned from the destination terminal 120 into the IM format and transmits it to the calling terminal 110 [S68, MSRP]. SEND]. In response, the originating terminal 110 transmits a reception report report message MSRP REPORT to the destination terminal side IM gateway 300 [S69].

Thereafter, when an IM format conversation message (MSRP SEND) is transmitted from the calling terminal 110 [S70], the receiving IM terminal 300 receives the IM format conversation message in a SM (Short Message) format. It converts the format into a conversation message (SMS message) and requests the transmission [S71].

According to the transmission request, the SMSC 400 transmits the SMS message to the destination terminal 120 [S72], and receives an acknowledgment message (ACK) thereof [S73].

However, even in this case, since the wait time for acknowledgment of the SMS message is set to about 24 hours as in the prior art, the conversation due to inconsistency with the wait time for acknowledgment (about 30 seconds) of the reestablished chat session. There is a possibility of the morning month of the content.

That is, when the acknowledgment message (ACK) for the SMS message is received within the acknowledgment waiting time (that is, the preset reception report time) of the conversation session, the reception report report message (MSRP REPORT) is normally transmitted. 110, [S74].

On the other hand, unlike in FIG. 6, when the ACK message is received later than the reception report report period, the reestablished conversation session is terminated again. Therefore, in this case, even though the conversation session is terminated and no further conversation is delivered, the same error as in FIG. 4 may occur at the destination terminal, in which the SMS message related to the conversation content is normally received.

This problem occurs because the IM server 200 does not recognize the information on the available conversation format of the terminal that has sent the SMS reply message (that is, the terminating terminal 120 in FIG. 6).

Accordingly, a method and system for providing an instant messaging service according to another embodiment of the present invention will be described below with reference to FIG. 7 as a solution to the above problem.

FIG. 7 is a diagram for describing an instant messaging service providing method in an instant messaging service providing system according to another embodiment of the present invention, which may be applied to the case of FIG. 6.

If the SMS reply message is received from the terminating terminal 120 after the conversation session, which was previously established for providing the IM service, is terminated [S81], the IM gateway 300 reopens the terminated conversation session. The conversation invitation message (INVITE) is transmitted to the IM server 200 [S82].

In this case, the conversation invitation message (INVITE) transmitted from the IM gateway 300 to the IM server 200 may be used by the terminal (that is, the called terminal 120 in FIG. 7) that has sent the SMS reply message. Information about the conversation type (see Initiator-Im-Type: sms) is added. This is one of the differences with the prior art and the present invention.

According to the prior art (see Fig. 6), the conversation invitation message (INVITE) transmitted from the IM gateway to the IM server includes the calling terminal (in the case of Figs. 6 and 7, the destination terminal 110 that sent the SMS reply message). No information is available about the chat format.

Therefore, according to the related art, since the IM server cannot recognize a conversational format of the calling terminal (that is, the called terminal 110 of FIGS. 6 and 7), the preceding description regarding the waiting time for acknowledgment of a later SMS message is advanced. Adjustment (change) as in Fig. 5 was not possible.

On the contrary, in the present invention, since the information on the conversation possible format of the calling terminal (that is, the called terminal 120 in FIG. 7) is added to the conversation invitation message INVITE and transmitted to the IM server 200, It is possible to change the waiting time for acknowledgment of SMS message later.

In this way, the IM server 200 that receives the conversation invitation message INVITE to which the information on the conversation possible format on the calling terminal UE B side is added, is the information on the conversation available format on the calling terminal UE B. Based on the registration format of the conversation of the calling terminal (UE B) is stored [S83].

The information about the conversation format of UE B registered and stored as described above may be utilized for conversation and session management with other terminals.

Subsequent processes S84 to S90 in FIG. 7 are based on the same process as S63 to S69 in FIG. 6.

Thereafter, when an IM format conversation message (MSRP SEND) is transmitted from the originating terminal 110 [S91], the receiving IM side 300 of the IM terminal 300 receives the IM format conversation message in a SM (Short Message) format. It converts the format into a conversation message (SMS message) and requests the transmission [S93].

Prior to the transmission of the conversation message, the IM gateway 300 changes the acknowledgment waiting time of the SMS message to be transmitted to the called terminal 110 to be equal to the acknowledgment waiting time of the established conversation session [S92]. .

Here, the reception wait time of the conversation session is the IM server when the reception report report (see MSRP REPORT, S95) for the IM format conversation message (MSRP SEND) is not received from the destination terminal 120. It refers to a reception report time (for example, about 30 seconds) which is set in advance by the 200 to terminate the conversation session.

The change in the acknowledgment wait time at the IM gateway 300 can be made by, for example, calling an API function such as send_sms_function to change (adjust) an offset value with respect to the acknowledgment wait time of the SMS message. Yes is the same as described above with reference to FIG.

As described above, if the acknowledgment wait time of the SMS message is changed to be the same as the acknowledgment wait time of the chat session, the SMSC 400 applies the change to the system, so that the SMS message (that is, the originating terminal 100) is changed. A conversation message converted from the IM format to the SM format through the IM gateway 300 is transmitted to the called terminal 120.

Accordingly, the SMSC 400 applies the changed acknowledgment waiting time to the SMS message, so that when the acknowledgment messages ACK and S94 are not received within the acknowledgment waiting time of about 30 seconds, the SMSC 400 retransmits the SMS message. You can stop and delete the SMS message.

Therefore, even in the case of FIG. 7, as in FIG. 5 described above, although the chat session is terminated due to the elapsed wait time of the acknowledgment of the chat session, the called terminal is caused by the longer acknowledgment wait time of the SMS message. The side may be able to solve an error problem (the morning moon problem of the conversation) that normally receives the SMS message.

As described above, according to the instant messaging service providing method and system according to the embodiment of the present invention, it is possible to greatly improve the reliability in providing the IM service.

Although the above has been described with reference to embodiments of the present invention, those skilled in the art may variously modify the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. And can be changed easily.

1 is a diagram schematically illustrating a configuration of an IMS network based communication system using SIP in connection with an instant messaging service of the present invention.

2 is a view for explaining a general operation method when providing an instant messaging service between terminals having the same conversational format.

3 and 4 are views for explaining a general operation method when providing an instant messaging service between terminals having different conversation formats.

5 is a view for explaining an instant messaging service providing system and a method for providing a service according to an embodiment of the present invention for providing an instant messaging service between terminals having different conversation types.

6 is a view for explaining the general operation of the instant messaging service providing method between the different terminals when the conversation session is re-established as the SMS message is returned from the destination terminal after the conversation session is terminated.

FIG. 7 is a view for explaining a method for providing an instant messaging service in an instant messaging service providing system according to another embodiment of the present invention, which may be applied to the case of FIG. 6.

<Description of the symbols for the main parts of the drawings>

110: calling terminal 120: called terminal

200: IM server 300: IM gateway

400: SMSC

Claims (11)

In the instant messaging service providing system for providing instant messaging (IM) services between terminals having different conversation formats, An IM server for establishing and managing a chat session for providing an IM service; If the called terminal is a terminal that cannot use the IM service, the IM message received from the calling terminal is converted into a short message (SM) format, and the waiting time for acknowledging the converted chat message is converted into the dialogue. An IM gateway that changes to match the acknowledgment wait time of the session; And SM server which transmits the converted SM type conversation message to the called terminal by applying the changed acknowledgment waiting time. Instant messaging service providing system comprising a. The method of claim 1, The acknowledgment wait time of the chat session is And if a reception report report for the IM message of the IM message is not received from the called terminal, the IM server is a reception report time which is preset to terminate the conversation session. The method of claim 1, The SM server, And if the acknowledgment message for the SM type conversation message is not received from the called terminal within the changed acknowledgment wait time, retransmission of the conversation message. The method of claim 1, The SM server, And if the acknowledgment message for the SM type conversation message is not received from the called terminal within the changed acknowledgment waiting time, the SM type conversation message is deleted. In the instant messaging service providing system for providing instant messaging (IM) services between terminals having different conversation formats, An IM server for establishing and managing a chat session for providing an IM service; And If a reply message in the form of a Short Message (SM) is received from the called terminal after the conversation session established by the calling request of the calling terminal is terminated, the call is received in response to the request for reopening the chatting session. The SM format may be transmitted to the IM server by adding information regarding a conversational format of the terminal, and a reply message received from the called terminal may be transmitted to the calling terminal through a conversation session re-opened according to the conversation request. IM gateway to convert the reply message from an IM format Instant messaging service providing system comprising a. The method of claim 5, The IM gateway, If the IM format is not included in the conversation possible format of the called terminal, the IM message received from the originating terminal is converted into SM format, and the wait time for acknowledging the converted conversation message is re-established. An instant messaging service providing system, wherein the instant messaging service is changed to be equal to an acknowledgment wait time of a chat session. The method of claim 6, The acknowledgment wait time of the chat session is And if a reception report report for the IM message of the IM message is not received from the called terminal, the IM server is a reception report time which is preset to terminate the conversation session. The method of claim 6, And a SM server which transmits the converted SM type conversation message to the called terminal by applying the changed acknowledgment waiting time. The method of claim 8, The SM server, And if the acknowledgment message for the SM type conversation message is not received from the called terminal within the changed acknowledgment wait time, retransmission of the conversation message. The method of claim 8, The SM server, And if the acknowledgment message for the SM type conversation message is not received from the called terminal within the changed acknowledgment waiting time, the SM type conversation message is deleted. The method of claim 5, And the IM server registers and stores information on a conversational format of the called terminal received from the IM gateway.

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