KR20100041173A - Apparatus and method for ensuring transfer quality in ims network - Google Patents

Abstract

PURPOSE: A device and a method thereof are provided to efficiently use limited radio resource and guarantee transmission quality by providing status information including wireless network status information of the received terminal to a calling terminal. CONSTITUTION: A state information collecting part(210) collects status information related to a terminal. A state information providing part(230) provides the status information of a second terminal to a first terminal to enable the first terminal to determine sending a message according to the status information of the second terminal. The state information collecting part receives information of a message for transmitting which is included in a SIP(Session Initiation Protocol) from the first terminal when the SIP call is processed. The state information collecting part collects the status information of the second terminal by requesting the status information of the second terminal using a wireless access device which is accessed to the second terminal.

Description

Apparatus and method for ensuring transfer quality in IMS network

The present invention relates to an apparatus and a method for guaranteeing transmission quality in an IMS network, and more particularly, in an IMS network capable of guaranteeing transmission quality in consideration of state information of a terminal when transmitting a message using the IMS network. An apparatus and method for guaranteeing transmission quality are provided.

Recently, there are not only circuit switching based communication networks such as CDMA (Code Division Multiple Access) networks, but also packet switching based communication networks. Especially, IP (Internet Protocol) based communication is used. The performing IP Multimedia Subsystem (IMS) network is used.

The IMS network conforms to the communication network standard proposed by the 3rd Generation Partnership Project (3GPP), and provides an IP-based communication service, and mainly uses a signaling protocol such as a Session Initiation Protocol (SIP).

On the other hand, with the spread of the Internet and the increasing use of computers in everyday life, most Internet users have preferred to use simple and fast messaging services rather than normal email to communicate with their colleagues and friends.

For example, in the case of a file sharing service based on a message session relay protocol (MSRP) in an IMS network, a file transmission service is provided to a counterpart who wants to transmit a file using the MSRP. In this case, in the case of the file sharing service using the MSRP, when the call processing using the SIP is completed, the file is transmitted without considering the wireless network state of the other terminal due to the characteristics of the IMS network that attempts to connect immediately.

In this case, when the wireless network state of the other terminal is not good, the file transfer is not easily performed due to the limitation of radio resources, and in some cases, the transmission is interrupted during the file transfer.

Accordingly, there is a demand for a method capable of efficiently using a limited radio resource by ensuring that a file can be transmitted in consideration of state information including wireless network state information of a counterpart terminal and ensuring a reliable transmission quality when transmitting a file.

The technical problem to be achieved by the present invention, when the calling terminal is to send a message to the called terminal, by providing the status information including the wireless network status information of the called terminal to the calling terminal according to the status information of the called terminal in the calling terminal. An apparatus and method for guaranteeing transmission quality in an IMS network capable of transmitting a message and guaranteeing efficient use of limited radio resources and transmission quality are provided.

The object of the present invention is not limited to the above-mentioned object, and other objects that are not mentioned will be clearly understood by those skilled in the art from the following description.

An apparatus for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention for achieving the above object includes a state information collecting unit collecting state information related to a terminal, and a state information of a second terminal by a first terminal. And a status information providing unit for providing status information of the second terminal to the first terminal to determine message transmission.

In addition, the method for ensuring the transmission quality in the IMS network according to an embodiment of the present invention for achieving the above object, the step of collecting state information related to the terminal, and the first terminal state information of the second terminal Providing status information of the second terminal to the first terminal to determine message transmission.

Specific details of other embodiments are included in the detailed description and drawings which will be described later.

According to the apparatus and method for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention as described above, one or more of the following effects exist.

Since the originating terminal can determine whether to transmit the message according to the state information of the terminating terminal, efficient use of radio resources is possible, and the transmission quality can be guaranteed when the message is transmitted.

In addition, since it is possible to ensure efficient use of radio resources and transmission quality, it is possible to prevent radio resources from being terminated due to excessive message transmission in advance.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

Hereinafter, with reference to the drawings of the configuration or processing flow diagram for explaining the apparatus and method for ensuring the transmission quality in the IMS network according to embodiments of the present invention will be described in detail for the implementation of the present invention. .

At this time, it is to be understood that like reference numerals refer to like elements throughout the specification, and that each configuration of the flowchart illustrations and combinations of flowchart illustrations may be performed by computer program instructions.

Since these computer program instructions may be mounted on a processor of a general purpose computer, special purpose computer, or other programmable data processing equipment, those instructions executed through the processor of the computer or other programmable data processing equipment may be described in the flowchart configuration (s). It creates a means to perform the functions.

These computer program instructions may be stored in a computer usable or computer readable memory that can be directed to a computer or other programmable data processing equipment to implement functionality in a particular manner, and thus the computer usable or computer readable memory. It is also possible for the instructions stored in to produce an article of manufacture containing instruction means for performing the functions described in the flowchart configuration (s).

Computer program instructions may also be mounted on a computer or other programmable data processing equipment, such that a series of operating steps may be performed on the computer or other programmable data processing equipment to create a computer-implemented process to create a computer or other programmable data. Instructions for performing the processing equipment may also provide steps for performing the functions described in the flowchart configuration (s).

In addition, each arrangement may represent a module, segment, or portion of code that includes one or more executable instructions for executing a specified logical function (s).

It should also be noted that in some alternative embodiments, the functions noted in the configurations may occur out of order. For example, the two components shown in succession may in fact be performed substantially simultaneously or the components may sometimes be performed in the reverse order, depending on the function in question.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a system for call processing in an IMS network according to an embodiment of the present invention.

As shown, the system 100 for call processing in an IMS network according to an embodiment of the present invention may include a terminal 110, an IP Multimedia Subsystem (IMS) network 120, and an access network 130. have.

The terminal 110 includes not only a device used for wireless communication but also a cellular phone having a wireless communication function, a personal communication system (PCS), a personal digital assistant (PDA), a computer, a laptop, and the like. It can be fixed or mobile.

The IMS network 120 is a concept defined in the 3rd Generation Partnership Project (3GPP) that defines Global System for Mobile communication (GSM) and Wideband Code Division Multiple Access (WCDMA), and provides IP-based communication-based services. Mostly, signaling protocols such as Session Initiation Protocol (SIP) are used. In addition, in 3GPP2, which defines a code division multiple access (CDMA) or the like, a function similar to that of the IMS network 120 is defined as a multimedia domain (MMD). Hereinafter, the IMS network 120 will be described as an example in the embodiment of the present invention, but it can be seen that MMD can be similarly applied.

The access network 130 is a communication network that allows the terminal 110 to access the IMS network 120, for example, a mobile communication network such as CDMA, WCDMA, and GSM, a public switched telephone network (PSTN), an integrated services digital (ISDN). Wired communication networks, or other known communication networks.

Of course, in the embodiment of the present invention, the IMS network 120 and the access network 130 is described as being configured separately, but this is only an example to help the understanding of the present invention is not limited to this IMS network 120 ) And the access network 130 may be configured as one communication network.

The IMS network 120 includes a call session control function 122 (CSCF) and a location register for session control according to a gateway 121 (G / W), a call, etc. connected to the access network 130. A home subscriber server (HSS) 123, an application server 124 (AS), and a media resource function 125 (MRF).

At this time, in the embodiment of the present invention, the CSCF 122 is used as the session control device, but this is only an example for clarity of understanding of the present invention, and the present invention is not limited thereto. The same can be implemented.

The CSCF 122 may perform a function of registering the terminal 110 with the HSS 123 and routing SIP signaling to an appropriate server. Since the CSCF 122 performs different functions depending on the network in which the terminal 110 is located, the Proxy CSCF 122a, P-CSCF, Serving CSCF 122b, and S-CSCF are based on their positions and roles. It can be logically divided into Interrogating CSCF 122c (I-CSCF).

The P-CSCF 122a is the first point where the terminal 110 connects to the IMS network 120 and is present in the same domain as the Gateway GPRS Support Node (GGSN). The P-CSCF 121a performs the same function as the SIP proxy server. The P-CSCF 121a performs compression / decompression of SIP messages, authentication and QoS measurement of bearer resources, and a SIP register request from the terminal to the I-CSCF 122c. It can perform the function of delivering. The S-CSCF 122b controls the session for the terminal and may maintain the session state for service maintenance.

The I-CSCF 122c may serve as a contact point for an incoming call to connect to a terminal in the network and a contact point with a third-party network terminal roaming in the network. I-CSCF 122c receives the SIP request from another network and routes it to S-CSCF 122b, and the address of S-CSCF 122b can be obtained from HSS 123. That is, I-CSCF 122c may forward the SIP request and response to S-CSCF 122b.

The AS 124 is connected to the CSCF 122 through the SCIM (Service Capability Interaction Manager) 124a, and provides a video conference call service, video conference call based technology, video conference call media control, intelligent network prepaid billing processing, and billing information. It can provide application functions such as transmission, voice control function when performing Push-To-Talk (PTT) function, announcement broadcasting, ring-back-tone function, and Voice over Internet Protocol (VoIP) service.

Of course, in the embodiment of the present invention has been described for the case in which one AS 124 is used as an example, this is only an example to help the understanding of the present invention, this is not limited to all applications in one AS A function may be performed or a plurality of ASs may provide an application function according to each function. In this case, the SCIM 124a has been described as an example that is configured separately from the AS 124, but this is merely an example to help the understanding of the present invention, and the present invention is not limited thereto. It may also be configured to integrate with 124).

The MRF 125 performs a function of controlling a media stream resource, and may include a multimedia resource function controller (MRFC) and a multimedia resource function processor (MRFP). The MRFP mixes and processes media streams, and the MRFC can control media stream resources within the MRFP.

In the above-described IMS network 120, terminals subscribed to the IMS network 120 provides a messaging service that can exchange IP-based messages with each other. Messaging services provided in the IMS network 120 include instance messaging services and session-based messaging services.

The instant messaging service is a method of delivering a short message or a short media message to a SIP message exchanged through a SIP session which is typically used for initiating initial Internet communication. Unlike the instance messaging service, messages in a session-based messaging service are carried in MSRP messages over a Message Session Relay Protocol (MSRP) session established through a SIP session.

MSRP messages used in session-based messaging services are relatively simpler than SIP messages, are exchanged over a separate session from the SIP session, and are subject to congestion control of the Transfer Control Protocol (TCP). Larger message exchanges are possible than instant messaging services delivered.

The message transmission using the MSRP is made regardless of the terminal's own state and the wireless network state of the other terminal when the calling and terminating functions of the calling terminal and the called terminal are activated. That is, when call processing using SIP is completed, the message is transmitted immediately. In this case, if the wireless network state of the other party terminal is not good, it is difficult to guarantee the transmission quality of the message. To provide.

2 is a diagram illustrating an apparatus for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention. Although not shown in FIG. 2, the same reference numerals will be used for the same elements as those of FIG. 1.

As shown, the apparatus 200 for guaranteeing the transmission quality in the IMS network according to an embodiment of the present invention is a state information collector 210, state information storage unit 220 and state information provider 230 It may include.

The state information collecting unit 210 may collect state information of terminals subscribing to the IMS network 120. In this case, the state information collected by the state information collecting unit 210 may include first state information which is the state information of the terminal itself and second state information which is the wireless network state information of the terminal.

The first state information may include state information of the terminal itself, for example, whether the terminal is powered on, whether a message can be received, etc. The second state information may include the state of the wireless network of the terminal, for example, available wireless channel information. , Ec / Io (signal-to-noise ratio), and data rate. At this time, the term "message" used in the embodiment of the present invention may include a short message, a media message, an image, a file, and the like, but is not limited thereto.

In this case, since the state information of the terminal in the IMS network 120 is managed by the CSCF 122, the HSS 123 and the AS 124, the apparatus for guaranteeing the transmission quality in the IMS network according to an embodiment of the present invention ( 200 may be included in the above-described CSCF 122, HSS 123, AS 124, etc., in the embodiment of the present invention, since the AS 124 manages the wireless network state information suitable for each application function, the present invention. An apparatus 200 for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention will be described with reference to an example included in the AS 124.

Of course, the device 200 for guaranteeing the transmission quality in the IMS network according to the embodiment of the present invention is included in the AS 124 is only an example for helping understanding of the present invention, and is not limited thereto. The CSCF 122, the HSS 123, the AS 124, and the like may be interworked with each other.

The state information collecting unit 210 may collect the radio network state information of the terminal by requesting the radio network state information of the terminal from a radio access device, for example, a radio network controller (RNC), to access the terminal. In other words, the state information collecting unit 210 may collect wireless network state information of the terminal from the access network 130 to which the terminal 110 may access the IMS network 120.

The state information collecting unit 210 requests the wireless network state information of the terminal from the radio access equipment such as the RNC, the radio access equipment is a radio network state information transmitted from the terminal and the radio network state information measured by the radio access equipment Because it holds.

The state information storage unit 220 may store state information collected by the state information collecting unit 210, and the stored state information may be updated whenever the state information collecting unit 210 newly collects state information. .

When the first terminal wants to transmit a message to the second terminal, the state information providing unit 230 determines whether the subscriber of the first terminal transmits the message in consideration of the status information of the terminal itself of the second terminal and the wireless network status information. Status information of the second terminal may be provided to the first terminal so as to be determined. At this time, the embodiment of the present invention has been described, for example, when the first terminal provides status information of the second terminal to the first terminal when the first terminal wants to transmit a message to the second terminal. You may.

For example, when the first terminal wants to transmit a message to the second terminal, the message type and message transmission capacity are transmitted to the apparatus 200 for guaranteeing transmission quality in the IMS network of the present invention. As described above, the state information collecting unit 210 requests the first state information and the second state information of the second terminal to the radio access equipment such as the RNC, and thus the first state information of the second terminal. And second state information. In addition, as described above, the state information providing unit 230 may provide the first terminal with the first state information and the second state information collected by the state information collecting unit 210 from the radio access equipment.

In addition, although the case where the first terminal and the second terminal are respectively the calling terminal and the called terminal has been described as an example, the first terminal and the second terminal may serve as the calling terminal and the called terminal, respectively.

The first terminal receives the state information of the second terminal, that is, the first state information and the second state information from the state information providing unit 230, and then displays the provided state information on the screen so that the first terminal subscriber The status information of the second terminal can be easily confirmed. For example, the first terminal may display the status information of the second terminal provided from the status information providing unit 230 as an icon, a text, etc. so that subscribers of the first terminal can easily distinguish.

3 is a schematic diagram showing status information displayed according to an embodiment of the present invention.

As shown in the figure, subscriber information 311 such as telephone numbers and names of a plurality of second terminals are displayed on the screen 310 of the first terminal, and a message to the second terminal desired by the subscriber of the first terminal is displayed. When you want to transmit, the subscriber information is selected. For example, when the subscriber of the first terminal selects the phone number of the second terminal to which the message is to be transmitted, the status information 320 of the second terminal may be displayed on one side of the phone number through a popup or a speech bubble. have. In this case, as the state information 320 of the second terminal illustrated in FIG. 3, an icon for distinguishing the first state information and the second state information is used, and the state information is displayed on one side of the icon through text. Will be described with an example.

The state information 320 displayed on the screen 310 of the first terminal may be displayed through an icon or text, and the present invention will be described with reference to an example of displaying through text. Accordingly, in FIG. 3, the wireless network state information of the corresponding second terminal may be displayed as "good", and the state information of the terminal itself may be displayed as "receivable". At this time, the wireless network state information may be divided into "good", "normal", "bad", etc., the state information of the terminal itself may be divided into "power off", "receivable", "away", etc. This is merely an example to help understand the present invention, and the present invention is not limited thereto, and the displayed state information may be added, deleted, or changed according to the type of state information to be considered when transmitting a message.

As such, when the subscriber of the first terminal can check the state information of the second terminal to which the message is to be transmitted, the wireless network state information of the second terminal is "bad" or the state information of the terminal itself is "power off" or the like. Will suspend sending the message. Therefore, since the subscriber of the first terminal can suspend the message transmission according to the status information of the second terminal, the radio resources can be efficiently used, and the radio resources due to the guarantee of quality and excessive message transmission are terminated. It can be prevented.

In addition, in the first terminal, if the subscriber wants to transmit a message even when the wireless network state information of the second terminal is "bad" or the second terminal is "power off," the screen of the first terminal as shown in FIG. In operation 310, a notification message 330 indicating that the message transmission is not guaranteed may be displayed.

On the other hand, if the status information of the second terminal is changed to be suitable for transmitting a message while the subscriber of the first terminal has suspended the message transmission because the status information of the second terminal is bad, the first terminal is a message as shown in FIG. The notification message 340 indicating that the transmission is possibly changed may be displayed. In this case, although the case in which the message is illustrated in FIG. 5 is described as an example, a sound effect may be used without being limited thereto.

6 is a flowchart illustrating a method for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention. In this case, in FIG. 6, a case in which the first terminal is the calling terminal and the second terminal is the called terminal will be described by way of example. The status information of the second terminal is provided to the first terminal, and a message according to the provided status information It can be understood as a method of transmitting.

As shown, the method for guaranteeing the transmission quality in the IMS network according to an embodiment of the present invention will first collect the state information of the terminals subscribed to the IMS network 120 by the state information collector 210 ( S110). At this time, the state information collected by the state collector 210 may include the first state information, which is the state information of the terminal itself, and the second state information, which is the state information of the wireless network of the terminal, as described above.

The collected state information is stored in the state information storage unit 220 (S120), and the state information providing unit 230 provides the state information stored as the first terminal (S130). In this case, the state information providing unit 230 may provide the first state information and the second state information collected by the state information collecting unit 210 to the first terminal without a separate processing process, or may perform a separate processing process. It can also be provided after. For example, the state information providing unit 230 may provide the state information of the terminal itself collected by the state information collecting unit 210 and available radio channel information, Ec / Io, transmission rate, etc. without a separate processing process. The collected state information of the terminal itself, the available wireless channel information, the state information of the second terminal based on Ec / Io, transmission rate, etc. may be converted into a throughput that can be collectively represented and provided.

When the subscriber of the first terminal wants to transmit a message to the second terminal (S140), the first terminal displays the received state information of the second terminal in the form of an icon or text as shown in FIG. S150). In this case, the first terminal displays the state information of the second terminal in the form of an icon or a text as shown in FIG. 3 described above, and the transmission capacity and the state information of the message to be transmitted from the first terminal to the second terminal. By comparing the status information of the second terminal provided from the study 230, if the status information of the second terminal is sufficient compared to the transmission capacity of the message to be transmitted, a text such as "good" can be output, If the status information is insufficient for the transmission capacity of the message to be sent, text such as "bad" can be output.

The subscriber of the first terminal checks the status information of the displayed second terminal to determine whether to transmit the message (S160). That is, the subscriber of the first terminal transmits the message to the second terminal if the status information of the second terminal determines that the status information of the second terminal is suitable for transmitting the message.

As described above in step S150 of FIG. 6, when the subscriber of the first terminal confirms the status information of the second terminal, if the status information of the second terminal is not suitable for transmitting the message, the status information of the second terminal transmits the message. You can send a message if it fits.

On the other hand, as a result of the subscriber of the first terminal confirms the status information of the second terminal in step S160 of Figure 6, even though the status information of the second terminal is not suitable for transmitting a message, the subscriber of the first terminal transmits the message As shown in FIG. 4, the notification message 330 indicating that the message transmission quality is not guaranteed may be displayed.

In addition, as a result of checking in step S160 of FIG. 6, after the state information of the second terminal is not suitable for transmitting a message and the transmission is suspended, if the state of the second terminal is good, the above-described message transmission as shown in FIG. 5 is possible. The notification message 340 may be displayed.

7 is a flowchart illustrating a method of collecting state information of a terminal in an IMS network according to an embodiment of the present invention. In this case, FIG. 7 may be understood as the method for collecting state information in step S110 of FIG. 6, and the operation of the apparatus for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention may be understood.

As shown, in the method for collecting the state information of the terminal in the IMS network according to an embodiment of the present invention, first if you want to send a message from the first terminal to the second terminal, the state information collection unit 210 When information on a message to be transmitted from the first terminal, for example, a message type and a transmission capacity of the message is received (S210), the second terminal requests the state information of the second terminal to a wireless access device connected to the second terminal. (S220). In this case, the information on the transmitted message may be included in the header of the SIP message.

The state information collecting unit 210 collects the state information of the second terminal for the request of step S220 described above from the radio access equipment (S230). Of course, in the embodiment of the present invention has been described for the case of requesting the status information of the second terminal to the radio access equipment such as RNC, for example, this is only an example to help the understanding of the present invention is not limited thereto. If there is a separate device capable of measuring the state information of the terminal may be requested to the corresponding equipment.

8 is a flowchart illustrating a method for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention.

As shown, when the first terminal 410 wants to transmit a message to the second terminal 420, the first terminal 410 performs an authentication procedure with the IMS network 120 (S310).

Thereafter, the IMS network 120 provides status information of the second terminal 420 to the first terminal 410 (S320). In this case, the provided state information may be understood as the above-described first state information and second state information.

After checking the status information provided by the subscriber of the first terminal 410, if the message is to be transmitted (S330), the first terminal 410 performs a message transmission procedure with the second terminal 420 (S340). ).

Of course, as a result of checking the status information of the second terminal 420 provided by the subscriber of the first terminal 410, if the message transmission is inappropriate, steps S330 and S340 may be omitted.

In addition, if the status information of the second terminal 420 is not suitable for message transmission in step S330, if the message is transmitted, the notification message 330 as shown in FIG. 4 may be provided.

Although embodiments of the present invention have been described above with reference to the accompanying drawings, those skilled in the art to which the present invention pertains may implement the present invention in other specific forms without changing the technical spirit or essential features thereof. I can understand that. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

1 is a block diagram illustrating a system for call processing in an IMS network in an embodiment of the present invention.

2 is a block diagram illustrating an apparatus for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention.

3 to 5 is a schematic diagram showing a notification message displayed according to the status information of the terminal according to an embodiment of the present invention.

6 is a flowchart illustrating a method for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention.

7 is a flowchart illustrating a method of collecting state information of a terminal according to an embodiment of the present invention.

8 is a flowchart illustrating a method for guaranteeing transmission quality in an IMS network according to an embodiment of the present invention.

<Explanation of symbols on main parts of the drawings>

210: status information collecting unit

220: state information storage unit

230: status information provider

Claims (15)

A state information collecting unit collecting state information related to the terminal; And And a status information provider for providing status information of the second terminal to the first terminal so that the first terminal determines message transmission according to the status information of the second terminal. The method of claim 1, The state information collecting unit receives information of a message to be included in a SIP message when processing a Session Initiation Protocol (SIP) call from the first terminal, and transmits the information of the second terminal to a wireless access device connected to the second terminal. The apparatus for guaranteeing transmission quality in an IMS network for requesting status information and collecting status information of the second terminal. The method according to claim 1 or 2, And the status information includes first status information which is status information of the second terminal itself and second status information which is wireless network status information of the second terminal. The method of claim 3, wherein And the first state information includes one or more of whether power is supplied to the second terminal and whether or not the second terminal can receive a message. The method of claim 3, wherein And the second state information includes one or more of available radio channel information, Ec / Io, and a transmission rate of the second terminal. The method according to claim 1 or 2, The first terminal displays the collected state information of the second terminal using one or more of an icon or text, And a subscriber of the first terminal determines whether to transmit the message according to the displayed status information of the second terminal. The method of claim 6, The first terminal compares the information of the message with the status information of the second terminal and ensures transmission quality in the IMS network displaying one or more of the icon or the text corresponding to the throughput according to the comparison result. Device for. Collecting state information related to the terminal; And Providing status information of the second terminal to the first terminal such that the first terminal determines message transmission according to the status information of the second terminal. The method of claim 8, The collecting of the status information may include receiving information of a message included in a SIP message during SIP call processing from the first terminal, and requesting status information of the second terminal from a wireless access device connected to the second terminal. Collecting the state information of the second terminal to guarantee transmission quality in the IMS network. The method according to claim 8 and 9, And the status information comprises first status information which is status information of the second terminal itself and second status information which is wireless network status information of the second terminal. The method of claim 10, The first state information may include one or more of whether power is supplied to the second terminal and whether or not a message is received by the second terminal. The method of claim 10, The second state information includes at least one of available radio channel information, Ec / Io, and a transmission rate of the second terminal. The method according to claim 8 or 9, The first terminal displaying the collected state information of the second terminal using at least one of an icon or text; And And determining, by the subscriber of the first terminal, whether to transmit the message according to the displayed status information of the second terminal. The method of claim 13, In the displaying of the icon or the text, the first terminal compares the information of the message with the state information of the second terminal, and displays one or more of the icon or the text corresponding to the throughput according to the comparison result. And displaying the transmission quality in the IMS network. The method of claim 13, And displaying a notification message on the first terminal when the state information of the second terminal is changed to be suitable for message transmission.

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