KR101043696B1 - Instant message service system and mobile, and service method thereof - Google Patents

Abstract

An instant message service system, a mobile communication terminal, and a service method thereof are disclosed. An instant message service system according to the present invention is an instant message service system that provides an instant message service to a mobile communication terminal in which an instant messenger is installed, and receives information about the instant messenger from the mobile communication terminal and stores the information on the instant messenger in a database. An information storage unit; And an information providing unit for providing information on a conversation partner corresponding to the instant messenger installed in the mobile communication terminal when an information subscription request signal is received from the mobile communication terminal. Based on the information received from the information providing unit, it is possible to determine whether or not to use the instant message for the chat partner, and when the chat partner is determined to be unable to talk, it is possible to send a compulsory message using the instant messenger. It is characterized by determining whether or not.

Instant messenger, SMS, MMS, interworking, chat group, chat partner, forced message

Description

Instant message service system and mobile communication terminal, and service method thereof

The present invention relates to an instant message service system, a mobile communication terminal, and a service method thereof. The present invention relates to a method of initiating a conversation even when a connection state of a chat counterpart of an instant messenger is displayed as an incapable chat state using an instant message. The present invention relates to an instant message service system and a mobile communication terminal, and a service method thereof, so that a message can be transmitted in an additional manner.

As information and communication technology is rapidly developed, various wireless communication services using a wireless network have been provided to users of mobile communication terminals. One of them is an instant messenger service that allows a user to chat and exchange various data among a plurality of users in real time using a mobile communication terminal.

Here, the instant messenger is a chat service that allows a user to chat with a plurality of users by text, voice, etc., a data transmission service that allows a counterpart user to exchange various data such as still images, videos, and music, and various information ( For example, it refers to information providing service providing news, stocks, weather, music, e-mail, etc., and an SMS message transmitting service for transmitting an SMS (Short Message Service) message to a mobile communication terminal. .

Such an instant messenger is installed in a mobile communication terminal, and a user can use a chat service, a data transmission service, a content information providing service, etc. without being limited in mobility by using an instant messenger.

Meanwhile, in the mobile communication terminal field, an IP (Internet Protocol) -based multimedia service is actively performed in a notebook and PDA (Personal Digital Assistance) environment based on a wireless local area network (WLAN), and a mobile communication and IP-based environment. Attempts to graf into have been attempted from several perspectives.

As to the one taking place in the most particularly European third generation mobile communications standard, ^{3GPP (3 rd Generation Partnership Project)} IMS (IP Multimedia Subsystem) , which is going on, by using the wireless communication terminals, such as mobile phone services of the IP network It shows how to use it.

IMS refers to a standard for providing multimedia services such as voice, audio, video, and data based on Internet Protocol (IP). IMS basically seeks to improve the price competitiveness of services and to rapidly develop and change services by using general-purpose Internet-based technologies and standardized network functions.

In addition, IMS is independent from the access network, and with improved session management, applications in different networks can be easily interlocked to facilitate global interworking between services and conversion of wired and wireless networks. The IMS was originally proposed for interworking and conversion between different mobile communication systems in a wideband-code division multiple access (W-CDMA) network, but currently supports IP networks as well as mobile communication systems. The technology is expanding to support various wired / wireless integrated networks based on the technology.

Such IMS is standardizing all multimedia service control procedures to use Session Initiation Protocol (SIP).

SIP is an application layer signaling protocol in which intelligent terminals wishing to communicate on the Internet identify each other, find their location, and specify a procedure for creating, deleting or modifying a multimedia communication session between them.

A request / response structure that controls the creation, modification, and termination of multimedia service sessions such as Internet-based conferencing, telephone, voice mail, event notification, and instant messaging, and can be used for both TCP and UDP. By using a SIP URL similar to an email address to distinguish between them, the service is provided without being dependent on the IP address.

SIP is text-based, developed using many of the Hypertext Transfer Protocol (HTTP) and Simple Mail Transfer Protocol (SMTP) intact, making it easy to implement, and the flexibility to create a variety of services in combination with many other protocols used on the Internet. And scalable.

SIP is a simpler protocol that corresponds to H.323 of the International Telecommunication Union Telecommunication Standardization Sector (ITU-T), which was proposed in 1999 as RFC 2543 by the IETF Internet Engineering Task Force Multiparty Multimedia Session Control (MMTF) Working Group. The RFC 3261 standard was enacted in July 2002, with revisions undertaken by a separate ITEF SIP working group.

SIP is a text-based application layer control protocol for establishing, modifying, and terminating sessions or calls for multimedia communication such as video and voice, and is used for teleconferences, telephone calls, visits, event notifications, and instant messages.

SIP consists of a Request (SIP Request) message and a SIP (SIP Response) message.The SIP request message includes INVITE (Invite to attend Session), ACK (Confirm for INVITE Request), BYE (Call Terminate), and REGISTER (Subscriber Terminal). Access address is registered in DB of Register), Cancel a pending request (CANCEL), Queries the capabilities of the server (OPTIONS), and SIP response message is 1xx (Information Response) and 2xx (Status Code). Successful Response), 3xx (Redirection Response), 4xx (Client Error, Request Failure), 5xx (Server Failure), 6xx (Global Failure).

In particular, the CONTACT header contains the private IP address and ID of the UAC (User Agent Client), such as <ID @ Private IP Address: Port>, so that it can be easily used as the ID of the SIP message entered through public IP in the future. It allows you to find UAC.

In general, the SIP and IMS-based instant messenger has a function of displaying the instant messenger connection state of the user, for example, a display function such as during a call, during a meeting, away, during other work, and offline display. And blocks or filters messages received from the other party accordingly.

By the way, even if the connection status of the chat counterpart of the instant messenger is displayed as a state of incapacity using the instant message, it may be necessary to transmit an urgent message or a push type forced message. There is no instant message service that meets these needs.

The present invention was devised to meet the above demands, and even when the connection status of the chat counterpart of the instant messenger is displayed as incapable of chatting using an instant message, the present invention seeks to start a chat, and thus additionally An object of the present invention is to provide an instant message service system, a mobile communication terminal, and a service method for transmitting a message by the method.

An instant message service system according to the present invention for achieving the above object is an instant message service system for providing an instant message service to a mobile communication terminal provided with an instant messenger, the instant message service system for the instant messenger; An information storage unit for receiving the information and storing the information into a database; And an information providing unit for providing information on a conversation partner corresponding to the instant messenger installed in the mobile communication terminal when an information subscription request signal is received from the mobile communication terminal. In this case, the instant messenger installed in the mobile communication terminal determines whether or not a conversation is possible using an instant message for the conversation partner based on the information received from the information providing unit, and the conversation partner is determined to be unable to talk. It is determined whether the forced message transmission using the instant messenger.

At this time, the information providing unit, it is preferable to provide the talk group information, the chat partner information for the chat partner corresponding to the instant messenger.

The talk group information may include resource list meta-information (RLMI) information, and the talk relative information may include presence information data format (PDFF) information.

Also, when the instant messenger receives both the conversation group information and the conversation partner information from the information providing unit within a set time, the instant messenger may have a conversation partner whose session initiation information is not displayed in the resource of the conversation partner information. It is desirable to determine that forced message transfer is possible.

Also, when the instant messenger receives both the conversation group information and the conversation partner information from the information providing unit within a set time, the instant messenger may display a conversation partner displayed as pending in the resource of the received conversation group information. It is desirable to determine that forced message transfer is possible.

Also, when the instant messenger receives only the talk group information from the information provider within a set time, the instant messenger may transmit a compulsory message to a chat partner indicated as terminated in the received talk group information resource. It is desirable to decide.

In addition, when the instant messenger is terminated without receiving the talk group information and the chat partner information from the information providing unit within a predetermined time, it is possible to send a compulsory message to all chat partners corresponding to the instant messenger. It is desirable to decide.

The mobile communication terminal according to the present invention for achieving the above object, the instant messenger is installed, whether or not to use the instant message by receiving information on the chat partner corresponding to the instant messenger from the instant message service system; A mobile communication terminal for determining, the instant messenger storage unit for storing the instant messenger; And driving the instant messenger and determining whether the forced message transmission using the instant messenger is possible based on the information received from the instant message service system when it is determined that the conversation using the instant message for the conversation partner is impossible. And an instant messenger driver for displaying.

Here, the instant messenger driver is configured to transmit an information subscription request signal to the instant message service system, and in response to the transmitted information subscription request signal, the instant messenger driver may receive talk group information and conversation partner information from the instant message service system. It is desirable to receive.

In addition, the instant messenger drive unit, when it is determined that the conversation using the instant message for the chat partner is impossible, and it is determined that the forced message can be transmitted, the SMS message or MMS (text message input by the user) is sent to the chat partner. It is desirable to force transmission in conjunction with Multimedia Messaging Service).

The instant message service method according to the present invention for achieving the above object, in the instant message service method of a mobile communication terminal having an instant messenger, receiving the information on the instant messenger from the mobile communication terminal and stored in a database Making; Receiving an information subscription request signal from the mobile communication terminal; Transmitting information corresponding to the received information subscription request signal to the mobile communication terminal; And determining whether the instant messenger of the mobile communication terminal can talk using an instant message based on the received information, and if it is determined that the conversation using the instant message is impossible, And determining and indicating whether or not it is possible.

Here, when the instant messenger of the mobile communication terminal receives RLMI information and PIDF information in response to the subscription information request signal, Session Initiation Protocol (SIP) access information is not displayed in the resource of the received PIDF information. It is desirable to determine that a forced message can be transmitted to the conversation partner.

Further, when the instant messenger of the mobile communication terminal receives the RLMI information and the PIDF information in response to the subscription information request signal, the instant messenger transmits a compulsory message to the conversation partner who is marked as pending in the resource of the received RLMI information. It is desirable to determine that this is possible.

In addition, when the instant messenger of the mobile communication terminal receives only RLMI information in response to the subscription information request signal, the instant messenger may transmit a compulsory message to a conversation partner indicated by the resource of the received RLMI information. It is desirable to decide.

In addition, when the instant messenger of the mobile communication terminal is terminated without receiving information corresponding to the information subscription request signal within a set time, a forced message may be transmitted to all conversation partners corresponding to the instant messenger. It is desirable to determine that.

Accordingly, the instant message service system and the mobile terminal according to the present invention, and the instant message service method, whether or not the message can be transmitted, even if the connection status of the chat counterpart of the instant messenger is displayed as a non-talk state using the instant message. In order to allow the transmission of the message in an additional manner.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention. However, the embodiments of the present invention described below are provided to enable those skilled in the art to more easily understand the present invention, and the scope of the present invention is not limited to the described embodiments.

1 is a view illustrating a concept of an instant message service system according to the present invention. Referring to the drawings, a UE 10 (User Equipment (hereinafter referred to as a mobile communication terminal)) 10 is installed with an instant messenger, and is connected to an instant message service system 60 through the Internet 30 based on SIP / IMS. It may be connected to the other mobile communication terminal 20.

In addition, the mobile communication terminal 10 may be connected to a call with another mobile communication terminal 20 through the base station 40, or may be connected to the instant message service system 60. In addition, a short message service center (SMSC) or a multimedia messaging service center (MSCC) 50 is interposed between the base stations 40, and a text message, or a picture, a sound, a video, or the like, between the mobile communication terminals 10 and 20. It may be implemented to mediate the transmission of multimedia messages, including.

In this case, the mobile communication terminal 20 of the other party to the mobile communication terminal 10 may be a mobile communication terminal having a SIP URI, or may be a mobile communication terminal having a TEL URI.

The instant message service system 60 is provided with the information storage part 62 and the information provision part 64, as shown in FIG.

The information storage unit 62 receives information on the instant messenger from the mobile communication terminals 10 and 20 and stores it in a database. In general, when the power of the mobile communication terminal (10, 20) is turned on, information about the unique number, location, subscriber, etc. for the mobile communication terminal (10, 20) at regular time intervals through the surrounding base station 40 Registered in a mobile switching center (not shown), the information storage unit 62 of the instant message service system 60 receives the information on the instant messenger from the mobile communication terminal 10 and stores it in a database. .

Here, the information on the instant messenger includes information on the terminal type of the mobile communication terminal 10, information on the talk group registered in the instant messenger of the mobile communication terminal 10, information on the conversation partner, the type of the instant messenger. And information on the version, connection status information of the instant messenger by the mobile communication terminal 10, and the like.

At this time, when the information storage unit 62 receives the information on the instant messenger installed in the mobile communication terminal 10, information about the terminal type of the mobile communication terminal 20 registered as the conversation counterpart, the mobile communication terminal ( It is preferable to store the instant messenger connection state information by 20) together with information on the instant messenger of the mobile communication terminal 10 and store it together in a database. To this end, the information storage unit 62 is not only capable of interworking with each other's related databases, but also implemented to transmit or receive data with the information storage unit 62 of the instant message service system 60 in another network. It is preferable.

When the information subscription request signal is received from the mobile communication terminal 10, the information providing unit 64 provides information on an instant messenger installed in the mobile communication terminal 10. At this time, the information providing unit 64 is connected to the information on the instant messenger of the mobile communication terminal 10, the information on the terminal type of the mobile communication terminal 20 of the other party, the instant of the mobile communication terminal 20 It is preferable to transmit information on the conversation partner including information on the messenger connection status. Such information on the conversation partner may be transmitted by being included in the conversation group information, the conversation partner information, and the like for the instant messenger installed in the mobile communication terminal 10.

In this case, the information providing unit 64 provides the talk group information registered in the instant messenger of the mobile communication terminal 10 in RLMI (Resource List Meta-Information), and the conversation partner information in PIDF (Presence Information Data Format). It is desirable to provide.

Here, RLMI refers to information on a contact group of an instant message service written in extensible markup language (XML) text according to the standard of RFC 4662. In addition, the PIDF is a data format defined from IM standards for displaying status information between message services according to the standard of RFC 3863, and may include status information on whether a communication partner can communicate or willing to communicate on a communication network. .

The instant messenger installed in the mobile communication terminal 10 determines whether or not a conversation is possible using an instant message for the conversation partner based on the information received from the information providing unit 64, and when the conversation partner is determined to be unable to talk. Determine whether the forced message can be sent using the instant messenger.

Here, the transmission of the compulsory message is a method of forcibly transmitting a text message created by the instant messenger to the counterpart's mobile communication terminal 20 even if it is determined that the conversation using the instant message is impossible. A method of transmitting a message written through the instant messenger of 10) to the counterpart's mobile communication terminal 20 through SMSC (Short Message Service Center) or MMSC 50 may be used.

In this case, it is preferable that the instant messenger determines whether the forced message can be transmitted based on the following conditions.

In response to the information subscription request signal transmitted to the instant message service system 60, all of the talk group information and the conversation partner information, that is, the RLMI information and the PIDF information illustrated above, are received from the information provider 64 within a predetermined time. In this case, if the terminal type of the counterpart's mobile communication terminal 20 is a TEL URI type, the instant messenger searches whether PIDF information includes session initiation access information (SIP contact information).

If only the session initiation access information is included in the PIDF information without status information, this means that the other party's mobile communication terminal 20 is intentionally communicating with the mobile communication terminal 10 although it is connected to the instant message service system 60. In this case, the instant messenger of the mobile communication terminal 10 determines that the conversation using the instant message is impossible and the forced message transmission is impossible.

If the session initiation connection information is not included in the PIDF information, this means that the other party's mobile communication terminal 20 does not initiate a connection to the instant messaging service system 60. Therefore, the instant messenger of the mobile communication terminal 10 is instantaneous. The conversation using the message is impossible, but since the mobile communication terminal 20 does not intentionally block the conversation with the mobile communication terminal 10, it is determined that the forced message is possible.

In this case, the message input through the instant messenger of the mobile communication terminal 10 may be forcibly transmitted to the counterpart's mobile communication terminal 20 by SMS or MMS interworking. However, the transmission of the compulsory message is not limited to SMS or MMS interworking, a screen forced transmission by a push method may be used, and the like.

In addition, when both the RLMI information and the PIDF information are received from the information providing unit 64 within a predetermined time in response to the information subscription request signal transmitted to the instant message service system 60, the mobile communication terminal 20 of the other party If the terminal type is a TEL URI type and is displayed in the RLMI resource information as a pending state, the instant messenger of the mobile communication terminal 10 is a state before the counterpart mobile communication terminal 20 accepts a friend registration request. It is determined that a conversation using an instant message is impossible, and in this case, a forced message is determined to be possible.

In addition, in response to the information subscription request signal transmitted to the instant message service system 60, when only the RLMI information is received from the information providing unit 64 within a set time, it is related to the terminal type of the mobile communication terminal 20 of the other party. If there is a conversation partner displayed as terminated in the RLMI resource information, the instant messenger of the mobile communication terminal 10 determines that there is a conversation partner without installing the instant messenger in the group. It is determined that instant message transmission is impossible for the talk group, and forced message transmission is possible. At this time, the compulsory message may be used as a means of inducing the installation of the instant messenger to the chat partner who does not have the instant messenger installed.

If the RLMI information and the PIDF information are not received within the set time in response to the information subscription request signal transmitted to the instant message service system 60, the information subscription is performed regardless of the terminal type of the mobile communication terminal 20 of the other party. Upon receiving the response signal indicating that the status of the request signal is terminated, the instant messenger of the mobile communication terminal 10 determines that the instant messenger is not installed for the talk partner power of the talk group, and to the chat partner power in the talk group. Determine that a forced message can be sent.

Whether or not the forced message determined by the instant messenger of the mobile communication terminal 10 can be transmitted is displayed on the screen of the mobile communication terminal 10 so that the user can finally determine whether to transmit the forced message.

On the other hand, for the preferred embodiment of the instant message service system according to the present invention, the mobile communication terminal 10, as shown in Figure 3, it is provided with an instant messenger storage unit 12 and the instant messenger driver 14 desirable.

At this time, the instant messenger storage unit 12 may store the instant messenger stored in the manufacturing process of the mobile communication terminal 10 by firmware or access the instant message service system 60 to download and store it as part of an application.

The instant messenger driver 14 drives the instant messenger stored in the instant messenger storage 12, and when it is determined that the conversation using the instant message for the conversation partner is impossible by the driven instant messenger, the instant message service system 60 On the basis of the information received from the) can be implemented to determine whether or not to transmit the forced message using the instant messenger, and display the result on the screen of the mobile communication terminal (10).

In addition, the instant messenger driver 14 transmits an information subscription request signal to the instant message service system 60, and responds to the conversation partner of the instant messenger from the instant message service system 60 in response to the transmitted information subscription request signal. Receives talk group information and chat partner information. Here, the talk group information and the chat partner information are the same as those described above, so the detailed description thereof will be omitted below.

The instant messenger driver 14 determines whether or not a conversation is possible using an instant message for a conversation partner based on the information received from the instant message service system 60, and when it is determined that a conversation using an instant message is impossible. Determine whether forced message transmission is possible using instant messenger. Here, the conditions for determining whether the compulsory message can be transmitted are the same as described above.

If it is determined that the forced message can be transmitted using the instant messenger, the mobile communication terminal 10 transmits the message inputted by the user via the instant messenger via SMS or MMS interworking or push method. Forcibly).

4 is a flowchart illustrating an instant message service method according to the present invention. Referring to the drawings, the information storage unit 62 of the instant message service system 60, after the power of the mobile communication terminal 10 and the mobile communication terminal 20 is turned on, the respective mobile communication terminal ( 10, 20) receives the information on the instant messenger and stores it in the database (S101).

Here, the information on the instant messenger, information on the terminal type of the mobile communication terminal 10, information on the talk group registered in the instant messenger of the mobile communication terminal 10 and information on the other party, the mobile communication terminal ( 10) connection status information of the instant messenger.

At this time, when the information storage unit 62 receives the information on the instant messenger installed in the mobile communication terminal 10, information about the terminal type of the mobile communication terminal 20 registered as the conversation counterpart, the mobile communication terminal 20 The instant messenger connection state information, etc.) is stored in a database in association with the instant messenger information of the mobile communication terminal 10.

In addition, the information storage unit 62 transmits and receives data in connection with the information storage unit 62 of the instant message service system 60 installed in another network, thereby moving information and information about the instant messenger installed in the mobile communication terminal 10. It may be implemented to link the information on the instant messenger installed in the communication terminal 20.

Meanwhile, the mobile communication terminal 10 may request the instant message service system 60 to subscribe to information on the talk group and the conversation partner registered in the instant messenger of the mobile communication terminal 10 (S103).

The information subscription request signal sent by the mobile communication terminal 10 is transmitted to the instant message service system 60 through a call state control function (CSCF), as shown in FIG. 5, and the instant message service system 60. Is a response signal to the information subscription request signal, and transmits talk group information including RLMI information and talk relative information including PIDF information to the mobile communication terminal 10 (S105).

Here, CSCF is a function that is in charge of the part related to call and session processing. Incoming Call Gateway, Call Control Function, SPD (Serving Profile Database) function, address, etc. It consists of address handling function.

Functioning as a gateway for an incoming call means acting as an entry point and performing routing for the incoming call. In addition, it performs service triggering on input calls such as call screening and forwarding, and is responsible for communication with the home subscriber server (HSS).

Call control functions are responsible for establishing and terminating calls, managing status / events, interacting with MRF for multiparty services, reporting call events for billing, and receiving and processing application level registrations.

The SPD communicates with the HSS of the home domain to manage user profile information and performs a similar function to the existing VLRs that inform the home domain when the user first accesses it.

CSCF can be divided into P-CSCF (Proxy-CSCF), I-CSCF (Interrogating-CSCF), and S-CSCF (Serving-CSCF).

P-CSCF is a point where a user equipment (UE) first encounters when connecting to an IMS through GPRS access. In other words, the user UE is the first point of contact to the IMS and resides in the same domain as the GGSN. Here, the P-CSCF transfers the SIP REGESTER message received from the UE to the I-CSCF with reference to the home domain of the UE, and manages the S-CSCF address obtained during the SIP REGISTER processing of the I-CSCF. Thereafter, the P-CSCF forwards the SIP call request message received from the UE to the S-CSCF by referring to the S-CSCF address obtained through the SIP REGESTER procedure.

I-CSCF acts as a point of contact for all incoming calls to connect to subscribers in the network from the visited network to the home network, ie with other roaming subscribers in the network. Due to this role, I-CSCF generally acts as a firewall and may have a hidden function to prevent the exposure of the configuration, topology and capacity of the operator's network.

In addition, I-CSCF performs the role of forwarding SIP Request to S-CSCF and generation of charging information. In addition, the HSS is determined by inquiring a subscription locator function (SLF) in a network in which several HSSs are operated.

I-CSCF is the first point of access to the user's home network IMS, and there may be several in one network domain. However, for the user it is determined by the home domain of the UE.

When the I-CSCF receives the SIP REGISTER message, the I-CSCF selects the HSS using the SLF, receives the S-CSCF address from the HSS, allocates the S-CSCF to be in charge of the actual registration, and receives the SIP message received from another network. To the S-CSCF and forward the response signal received from the S-CSCF to the P-CSCF or the other network.

S-CSCF receives not only all session state management functions of IMS but also subscriber profile in connection with HSS and performs main functions for call processing. In the registration process, the S-CSCF functions as a registrar of RFC 2543.

In addition, S-CSCF provides call processing functions as a proxy server and user agent of RFC 2543, and provides services such as interworking with service platform and providing service related information (Tone Announcement, Billing information, etc.). Responsible for all relevant functions.

In addition, the S-CSCF is a subsystem for controlling a session of the UE, registers a subscriber with the HSS, downloads subscriber information, and stores and manages a service profile. Obtain the I-CSCF / Breakout Gateway Control Function (BGCF) / Media Gateway Control Function (MGCF) address, which is the home domain of the destination UE, through the called number or destination URL dialed by the UE, and request the call to I-CSCF / BGCF / MGCF. Pass the message. In addition, a response signal received from I-CSCF / BGCF / MGCF or the like is transmitted to the P-CSCF or I-CSCF.

The mobile communication terminal 10 determines whether the conversation is possible using an instant message for the conversation partner, based on the information received from the instant message service system 60 (S107). It is assumed here that the mobile communication terminal 20 is the conversation partner.

If it is determined that the conversation using the instant message is possible, the instant messenger of the mobile communication terminal 20 transmits and receives a message with the instant messenger of the mobile communication terminal 20 (S109). Since the method for this is a known technique, a detailed description thereof will be omitted.

If it is determined that the mobile communication terminal 20 as the conversation partner is unable to talk, the mobile communication terminal 10 determines whether transmission of a compulsory message using an instant messenger is possible (S111).

Determining whether the forced message can be transmitted using the instant messenger may be implemented by software means by the instant messenger, and hardware such as the instant messenger driver 14 (refer to FIG. 3) of the mobile communication terminal 10. It may be implemented by an appropriate means.

In this case, the transmission of the compulsory message using the instant messenger may be implemented according to the condition as shown in FIG. 6.

For example, when both the RLMI information and the PIDF information are received from the instant message service system 60 within a predetermined time in response to the information subscription request signal transmitted to the instant message service system 60, the mobile communication terminal of the other party ( If the terminal type of 20) is a TEL URI type, the instant messenger searches whether the SIP contact information is included in the PIDF information.

If the SIPF information is included in the PIDF information, this means that the other party's mobile communication terminal 20 is intentionally interrupting a conversation with the mobile communication terminal 10 although it is connected to the instant message service system 60. Therefore, in this case, the instant messenger of the mobile communication terminal 10 determines that the conversation using the instant message is impossible due to the policy of the instant message service, and determines that the forced message cannot be transmitted.

If SIP Contact information is not included in the PIDF information, this means that the other party's mobile communication terminal 20 has not initiated a connection to the instant messaging service system 60. Therefore, the instant messenger of the mobile communication terminal 10 is an instant message. Conversation is impossible, but since the mobile communication terminal 20 does not intentionally block the conversation with the mobile communication terminal 10, it may be determined that the forced message transmission is possible. In this case, the message input through the instant messenger of the mobile communication terminal 10 may be forcibly transmitted to the counterpart's mobile communication terminal 20 by SMS or MMS linkage (S113).

In addition, when both the RLMI information and the PIDF information are received from the information providing unit 64 within a predetermined time in response to the information subscription request signal transmitted to the instant message service system 60, the mobile communication terminal 20 of the other party If the terminal type is a TEL URI type and is displayed in the RLMI resource information as a pending state, the instant messenger of the mobile communication terminal 10 is a state before the counterpart mobile communication terminal 20 accepts a friend registration request. It is determined that the conversation using the instant message is impossible, and in this case, the forced message can be determined as possible. In this case, as described above, when a message is input by the user through an instant messenger, the message input to the mobile communication terminal 20 of the conversation partner is forcibly transmitted by SMS or MMS interworking or push method (S113). ).

In addition, in response to the information subscription request signal transmitted to the instant message service system 60, when only the RLMI information is received from the information providing unit 64 within a set time, it is related to the terminal type of the mobile communication terminal 20 of the other party. If there is a conversation partner displayed as terminated in the RLMI resource information, the instant messenger of the mobile communication terminal 10 determines that there is a conversation partner without installing the instant messenger in the group. It is determined that instant message transmission is impossible for the talk group, and forced message transmission is possible. At this time, the compulsory message may be used as a means of inducing the installation of the instant messenger to the chat partner who does not have the instant messenger installed.

If the RLMI information and the PIDF information are not received within the set time in response to the information subscription request signal transmitted to the instant message service system 60, the information subscription is performed regardless of the terminal type of the mobile communication terminal 20 of the other party. Upon receiving the response signal indicating that the status of the request signal is terminated, the instant messenger of the mobile communication terminal 10 determines that the instant messenger is not installed for the talk partner power of the talk group, and to the chat partner power in the talk group. Determine that a forced message can be sent.

Although the preferred embodiments of the present invention have been illustrated and described above, the present invention is not limited to the specific embodiments described above, and the present invention is not limited to the specific embodiments of the present invention without departing from the spirit of the present invention as claimed in the claims. Anyone skilled in the art can make various modifications, as well as such modifications are within the scope of the claims.

1 is a diagram schematically illustrating the concept of an instant message service system according to the present invention.

2 is a diagram schematically illustrating an embodiment of the instant message system of FIG. 1.

3 is a diagram schematically illustrating an embodiment of the mobile communication terminal of FIG. 1.

4 is a flowchart illustrating an instant message service method according to the present invention.

FIG. 5 is a diagram illustrating transmission of an information subscription request signal of FIG. 4 and a response signal thereto. FIG.

6 is a diagram illustrating an example of a condition for determining forced message transmission of FIG. 4.

Claims (15)

An instant message service system for providing an instant message service to a mobile communication terminal in which an instant messenger is installed, An information storage unit for receiving the information on the instant messenger from the mobile communication terminal and storing it in a database; And When an information subscription request signal is received from the mobile communication terminal, information on a talk group including a chat partner corresponding to the instant messenger installed in the mobile communication terminal (hereinafter referred to as 'chat group information') or a chat partner It includes an information providing unit for providing information about the communication state of the (hereinafter referred to as 'conversational partner information'), The instant messenger installed in the mobile communication terminal determines whether or not a chat is possible using an instant message for the chat partner based on at least one of the talk group information and the chat partner information received from the information provider. And if it is determined that the conversation partner is incapable of communicating, determining whether a forced message can be transmitted using the instant messenger. delete The method of claim 1, The talk group information includes resource list meta-information (RLMI) information, and the talk relative information includes presence information data format (PDFF) information. The method according to claim 1 or 3, When the instant messenger receives both the conversation group information and the conversation partner information from the information provider within a predetermined time, the instant messenger composes a message for the conversation partner whose session initiation information is not displayed in the received resource of the conversation partner information. The instant message service system, characterized in that it is determined that the transmission of the. The method according to claim 1 or 3, When the instant messenger receives both the conversation group information and the conversation partner information from the information provider within a set time, the instant messenger composes a message for a conversation partner who is marked as pending in the resource of the received conversation group information. The instant message service system, characterized in that it is determined that the transmission of the. The method of claim 1, When the instant messenger receives only the talkgroup information from the information provider within a set time, it is determined that a forced message can be transmitted to the chat partner who is marked as terminated in the received talkgroup information resource. Instant message service system, characterized in that. The method according to claim 1 or 3, The instant messenger determines that a forced message can be transmitted to all chat partners corresponding to the instant messenger when the instant messenger is terminated without receiving the talk group information and the chat partner information from the information provider within a set time. Instant message service system, characterized in that. A mobile communication terminal having an instant messenger installed therein and receiving information on a conversation partner corresponding to the instant messenger from an instant message service system and determining whether or not a conversation is possible using an instant message. An instant messenger storage unit for storing the instant messenger; And When the instant messenger is activated, and it is determined that the conversation using the instant message for the conversation partner is impossible, it is possible to determine whether to transmit the compulsory message using the instant messenger based on the information received from the instant message service system. Including an instant messenger driver to display, The information received from the instant message service system, At least one of information on a conversation group including a conversation partner corresponding to the instant messenger (hereinafter referred to as 'conversation group information') and information on a communication status of the conversation partner (hereinafter referred to as 'conversation partner information') Mobile communication terminal comprising a. The method of claim 8, The instant messenger driver, And transmitting at least one of the talk group information and the conversation partner information in response to the transmitted information subscription request signal to the instant message service system. The method according to claim 8 or 9, The instant messenger driver, When it is determined that the conversation using the instant message for the conversation partner is impossible, and the transmission of the forced message is determined to be possible, a text message input by the user may be forcibly transmitted by SMS or MMS connection to the conversation partner. Mobile terminal. In the instant message service method of the mobile communication terminal installed instant messenger, Receiving the information on the instant messenger from the mobile communication terminal and storing the information on the instant messenger; Receiving an information subscription request signal from the mobile communication terminal; Transmitting information on a conversation partner corresponding to the received information subscription request signal to the mobile communication terminal; And The instant messenger of the mobile communication terminal determines whether or not a conversation using an instant message is possible based on the received information on the conversation partner, and when the conversation using the instant message is determined to be impossible, the instant messenger is forced to use the instant messenger. Determining and indicating whether the message can be sent; The information about the conversation partner includes at least one of Resource List Meta-Information (RLMI) information, which is information on a talk group including the conversation partner, and Presence Information Data Format (PDFF) information, which is information on a communication status of the conversation partner. Instant message service method comprising a. The method of claim 11, The instant messenger of the mobile communication terminal, When both the RLMI information and the PIDF information are received in response to the information subscription request signal, And determining that a forced message can be transmitted to a conversation partner whose SIP Initiation Protocol (SIP) connection information is not displayed in the resource of the PIDF information. The method of claim 11, The instant messenger of the mobile communication terminal, When both the RLMI information and the PIDF information are received in response to the information subscription request signal, And determining that a compulsory message can be transmitted to a conversation partner who is marked as pending in the resource of the received RLMI information. The method of claim 11, The instant messenger of the mobile communication terminal, When only the RLMI information is received in response to the information subscription request signal, And determining that a compulsory message can be transmitted to the conversation partner indicated by the termination of the received RLMI information. The method of claim 11, The instant messenger of the mobile communication terminal, When the state is terminated without receiving the information about the conversation partner corresponding to the information subscription request signal within a set time, And determining that a forced message can be transmitted to all conversation partners corresponding to the instant messenger.

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