KR20080064066A - Method and system for providing service in a communication system - Google Patents

Abstract

A method and a system for providing a service in a communication system are provided to reduce an overhead by making a presence server transmit only necessary information to a user. A method for providing a service in a communication system comprises the following several steps. The first terminal transmits connection information of the second terminal, for example, a reservation request message for knowing log on/off state change information, to a presence server(211). The presence server transmits a confirmation message to the first terminal(213), and stores filtering information included in the reservation request message and transmits an initial notification message to the first terminal(215). The first terminal transmits a confirmation message to the presence server(217). The second terminal transmits a state change information message, for notifying the presence server that states of the second terminal are changed, to the presence server(219). The presence server recognizes that the states of the second terminal were changed, and transmits a corresponding state change notification message to the first terminal(221). The first terminal transmits a confirmation message to the presence server(223). The states of the second terminal are changed again, and the second terminal transmits a state change information message to the presence server(225). If the second terminal transmits the state change information message at hours beside 17:00 to 19:00(227), the presence server transmits a corresponding state change notification message to the first terminal(229). The first terminal transmits a confirmation message to the presence server(231). If the second terminal transmits the state change information message at hours within 17:00 to 19:00, the presence server does not transmit the state change information message to the first terminal though having received the message from the second terminal.

Description

METHOD AND SYSTEM FOR PROVIDING SERVICE IN A COMMUNICATION SYSTEM}

1 is a schematic diagram illustrating a presence network structure in a communication system;

2 is a diagram illustrating a process of transmitting access information of a terminal in an IMS based communication system according to an exemplary embodiment of the present invention.

3 is a diagram illustrating a reservation request message format according to an embodiment of the present invention.

The present invention relates to a communication system, and more particularly, to a method and system for providing a service in a communication system.

In general, the IP Multimedia Subsystem (hereinafter referred to as IMS) is a system for providing an IP (Internet Protocol) based packet communication service. The IMS is a system that enables multimedia communication such as video or large data out of a voice-oriented service.

In addition, the IMS is an open structure that enables IP multimedia services in a mobile, wired, and converged environment, and is based on Session Initiation Protocol (SIP) signaling. For example, in an IMS-based communication environment, subscribers can enjoy one-to-many real-time group calls, interactive mobile games, and real-time instant messaging (IM) services. The IMS was proposed in the process of preparing a wireless network standard for interworking and compatibility between different service networks in a third generation mobile communication system based on an IP network. However, it is now being extended to core technologies supporting next-generation supplementary communication services and wired / wireless integration.

A representative service among the services based on the IMS is a presence service. The presence service is a service that delivers access information between users based on the IMS. In more detail, in the IMS-based network, a service that provides a connection state between each other through registration between users who want to know a service connection state.

For example, there is a first terminal that provides its own access information to the presence server and a second terminal that wants to know a connection state of the first terminal, for example, a log on / log off state of the first terminal. Let's assume. If the second terminal wants to know the state change of the first terminal, the presence server provides state change information NOTIFY to the second terminal whenever the state of the first terminal changes.

However, even if the second terminal does not need to receive the state change information of the first terminal or if the state change information of the first terminal is not needed, the presence server provides the first terminal with the first terminal. Provides state change information of the terminal. This may cause overhead due to the state change information message transmission of the presence server, and the second terminal may be inconvenient to receive unnecessary information.

Accordingly, the present invention provides a method and system for providing a service in a communication system based on IMS.

The present invention also provides a service providing method and system for providing state change information of a terminal in an IMS-based communication system.

According to an aspect of the present invention, a method of providing a service of a server in a communication system includes: a first terminal desiring to receive connection information of a second terminal existing in the same group as the first terminal from a first terminal; And receiving a message, wherein the first message includes time information that the first terminal wants to receive the access information.

According to another aspect of the present invention, there is provided a method of providing a service of a first terminal in a communication system, the method comprising: a first message for receiving access information of a second terminal existing in the same group as the first terminal; The first message includes a time information that the first terminal wants to receive the access information.

A system of the present invention for achieving the above objects is a service providing system in a communication system, comprising: a first message which desires to receive connection information of a second terminal existing in the same group as the first terminal from a first terminal; And a server for receiving, wherein the first message includes time information for which the first terminal wants to receive the access information.

Another system of the present invention for achieving the above objects is a service providing system in a communication system, the first system for transmitting a first message to the server to receive the connection information of the second terminal in the same group as the first terminal And a terminal, wherein the first message includes time information that the first terminal wants to receive the access information.

Hereinafter, the operation principle of the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, in describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted. Terms to be described later are terms defined in consideration of functions in the present invention, and may be changed according to intentions or customs of users or operators. Therefore, the definition should be made based on the contents throughout the specification.

According to the present invention, when a terminal wants to receive connection information of terminals existing in the same group in a communication system based on an Internet Protocol Multimedia Subsystem (hereinafter referred to as 'IMS'), A service providing method and system capable of receiving the access information at a time are proposed.

Next, the presence network structure in the communication system will be described with reference to FIG. 1.

1 is a diagram schematically illustrating a presence network structure in a communication system.

Referring to FIG. 1, the presence network includes a presence client 101, a Session Initiation Protocol (SIP) / Internet Protocol (IP) Core 103, and a presence server 105. And an XDMS (Extensible Markup Language Document Management Server, hereinafter referred to as 'XDMS') 111.

The presence client 101 refers to a terminal requesting a service, and transmits or receives a call message and is connected to the SIP / IP core 103 through an access network. The presence server 105 serves as a subject providing a service, receives a SIP message, and serves as a call processing corresponding to the service, and is connected to the SIP / IP core 103 through an access network. The SIP / IP core 103 is a core network supporting SIP and IP multimedia, and serves to transmit SIP messages 107 and 109 to the presence client 101 and the presence server 105.

In addition, the presence client 101 is connected to the presence server 105 through the XDMS (111). Herein, the XDMS 111 stores user information about a group registered by the presence client 101, and transmits group user information to the presence server 105 at the request of the presence server 105. It plays a role.

1 schematically illustrates a presence network structure in a communication system. Next, with reference to FIG. 2, access information of a terminal in an IMS-based communication system according to an embodiment of the present invention, for example, log on or log off. It will be described the process of delivering information indicating that.

2 is a diagram illustrating a process of transmitting access information of a terminal in an IMS based communication system according to an exemplary embodiment of the present invention. For example, it is assumed that the access information of the terminal is delivered through a SIP message.

Referring to FIG. 2, first, a presence server 203 providing connection information of a current presence service, a second terminal 205 providing its connection information to the presence server, and the second It is assumed that there is a first terminal 201 that wants to know the access information of the terminal.

The first terminal 201 first transmits a reservation request message to the presence server 203 in order to know access information of the second terminal, for example, log on / log off state change information (step 211). At this time, the first terminal 201 includes filtering information indicating that the state change information of the second terminal is not received, for example, from 17:00 to 19:00 in the reservation request message.

Upon receiving the reservation request message, the presence server 203 transmits a confirmation message indicating that the reservation request message has been received to the first terminal (step 213). In addition, the presence server 203 stores the filtering information included in the reservation request message and transmits an initial notification message (step 215). Upon receipt of the initial notification message, the first terminal 201 transmits a confirmation message indicating that the initial notification message has been received to the presence server 203 (step 217).

In this case, it is assumed that the second terminal 205 transmits a state change information message to the presence server 203 indicating that its state has been changed (step 219). Upon receiving the state change information message, the presence server 203 recognizes that the second terminal 205 has changed state, and transmits a state change notification message corresponding to the state change information message to the first terminal 201. In step 221. Upon receiving the state change notification message, the first terminal 201 transmits a confirmation message to the presence server 203 indicating that the state change notification message has been received.

On the other hand, it is assumed that the state of the second terminal 205 is changed again, so that the second terminal 205 transmits a state change information message indicating that its state has been changed to the presence server 203. (Step 225). If the time at which the second terminal 205 transmits the state change information message to the presence server 203 is between 17:00 and 19:00, the presence server 203 is connected to the second terminal 205. Although the state change information message indicating that the state of the message has been changed, the state change notification message is not transmitted to the first terminal 201.

If the time when the second terminal 205 transmits the state change information message 227 to the presence server 203 is not between 17:00 and 19:00, the presence server 203 may be configured as the first server. A state change notification message indicating that the state of the second terminal 205 has been changed is transmitted to the first terminal 201 (step 229). Upon receiving the state change notification message, the first terminal 201 transmits a confirmation message indicating that the message has been received to the presence server 203 (step 231).

In FIG. 2, a process of transmitting access information of a terminal in an IMS based communication system according to an embodiment of the present invention has been described. Next, the first communication system according to an embodiment of the present invention will be described with reference to FIG. 3. The reservation request message format transmitted by the terminal to the presence server will be described.

3 is a diagram illustrating a reservation request message format according to an embodiment of the present invention.

Referring to FIG. 3, the reservation request message is a message transmitted when the first terminal wants to know the state change information of the second terminal to the presence server.

The reservation request message includes an existing reservation request message parameter and a time-based parameter. The reservation request message parameter is the same as the existing reservation request message, and since the parameters are not directly related to the present invention, description thereof will be omitted.

On the other hand, the time-based parameter, it can be seen that the time set in the time-based parameter, the first terminal does not want to receive the state change information of the second terminal from 17 o'clock to 19 o'clock.

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the following claims, but also by the equivalents of the claims.

As described above, the present invention transmits a message to a presence server so that a user receives information only in a time band desired by the IMS based communication system, so that the user can receive information only in a time band desired by the user. Can be. Therefore, the presence server does not have to transmit unnecessary information to the user, thereby reducing the overhead.

Claims (12)

In the communication system providing service of the server, Receiving from the first terminal a first message which desires to receive access information of a second terminal existing in the same group as the first terminal, And the first message includes time information that the first terminal wants to receive the access information. The method of claim 1, After receiving the first message, receiving a second message indicating access information from the second terminal; And transmitting a third message indicating the connection information of the second terminal to the first terminal. The method of claim 2, The access information is a service providing method, characterized in that its status is logged on or off. A service providing method of a first terminal in a communication system, Transmitting a first message to a server to receive access information of a second terminal existing in the same group as the first terminal, And the first message includes time information that the first terminal wants to receive the access information. The method of claim 4, wherein The first terminal further comprises the step of receiving a second message indicating the access information of the second terminal from the server. The method of claim 5, The access information is a service providing method, characterized in that its status is logged on or off. A service providing system in a communication system, And a server for receiving a first message from a first terminal, the first message desiring to receive connection information of a second terminal in the same group as the first terminal, wherein the first message is received by the first terminal. Service providing system comprising the desired time information. The method of claim 7, wherein After receiving the first message, the server receives a second message indicating connection information from the second terminal, and transmits a third message indicating connection information of the second terminal to the first terminal. Service provision system. The method of claim 8, The access information is a service providing system, characterized in that indicating that its status is logged on or off. A service providing system in a communication system, And a first terminal for transmitting a first message to a server, the first message desiring to receive connection information of a second terminal existing in the same group as the first terminal, wherein the first message is a time for which the first terminal wants to receive the connection information. Service providing system comprising the information. The method of claim 10, And the first terminal receives a second message indicating access information of the second terminal from a server. The method of claim 11, The access information is a service providing system, characterized in that indicating that its status is logged on or off.

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