KR20160046213A - System for providing communication of P2P without message server and method thereof - Google Patents

Abstract

The present invention discloses a communication provision system and a communication provision method which transmit and receive a message based on P2P connection in an IMS network. The communication provision system of the present invention comprises: an IMS server which provides a call service and a data service based on an IMS network and relays message communication related to initial communication configuration between a plurality of user terminals; and the user terminal which configures PSP type session settings with at least one of the counterpart user terminals, and communicates with the counterpart user terminals of which the sessions are configured. The present invention provides a message communication service which updates session information with changed information without separate signaling processing when communication re-configuration is required in the user terminals of which the sessions are configured, thereby providing a prompt and continuous message communication service.

Description

[0001] The present invention relates to a P2P-type communication providing system and a method of providing P2P-

The present invention relates to a communication technology, and more particularly, to a communication providing system and a communication method for users to communicate based on a P2P connection without a message server that mediates message transmission.

A message service (for example, an IM (Instant Message) service) is a communication between users through intermediation of a message server. For example, there are IM services such as Kakao Talk and chat. In the message service, a message server (e.g., an IM server) manages the user's connection, receives a communication request message between connected users, receives a message of the calling user, and provides a mediation service of a message to the receiving user do.

In the conventional message server based communication services, since the message server mediates the communication of messages among the users, the security of the messages is problematic. For example, there was a problem that a message could be exposed to a manager or hacker through a message server.

Therefore, in order to improve the message security, the message server mediates only the address exchange and communication setup between the sender and the receiver at the initial stage of the message service, and the actual message delivery is performed between the sending and receiving side terminals Respectively.

However, the message server must establish and manage communication settings with the user terminal at the initial stage, and message communication is disabled when the message server is disabled. Therefore, the signaling and processing complexity of the message server still remained. In addition, due to the increase of subscribers and data of the message service, cost investment such as expansion and management of the message server continued, and the maintenance cost was continued and the profitability of the communication service provider was lowered.

Registration No. 10-0430910 (Registered on April 28, 2004)

It is an object of the present invention to provide a communication providing system and a communication providing method for providing a communication service in P2P manner between user terminals without a message server in an IMS (IP Multimedia Messaging System) network do.

Another object of the present invention is to maintain a session only by updating information when an event such as IP change, power off, roaming or the like is required to establish a communication, so that initial initial communication setting is not repeated.

According to an aspect of the present invention, there is provided a peer-to-peer (P2P) communication providing system in which a message server is excluded from an IMS network, An IMS server for providing call services and data services and for mediating message communication between the plurality of user terminals communicating messages in connection with initial communication setup; And a user terminal establishing a session setup of the P2P type with at least one user terminal of the other party based on the initial communication setting and communicating a message to a user terminal of the other party to which the session is established.

In the present invention, a user terminal of a sender who designates at least one recipient and invites to a message service becomes a session server, and a user terminal of at least one recipient becomes a session client.

Here, the IMS server mediates a message communication of the initial communication setting, including an invite message of the sender and an ok (ok) message of the recipient responding to the invitation.

Preferably, the sender's user terminal sends the invite message including the IP address, application ID, service number or port number of the sender's user terminal, the sender's phone number and the recipient's phone number to the recipient's user terminal Lt; / RTI >

Here, the receiver's user terminal responds to the sender's user terminal via the IMS server, including the IP address of the receiver's user terminal and the service number or port number.

In addition, the IMS server receives an acknowledgment (ACK) message from the user terminal of the sender who has received the acceptance message, and transmits the acknowledgment message to the receiver's user terminal to complete the intermediation of the initial communication setup.

Further, the user terminal of the sender and the user terminal of the receiver set the session using the IP address, application ID, service number or port number of the other party after the initial communication setting is completed.

Here, the established session is supported by protocols including HTTP (HyperText Transfer Protocol), FTP (File Transfer Protocol) and MSRP (Message Session Relay Protocol) according to the content of the service.

According to an aspect of the present invention, when an event requiring re-setting of session information including IP change, power on / off, and roaming occurs, the user terminal transmits information changed to a user terminal of at least one other party And requests the update of the session information.

According to another aspect of the present invention, there is provided a method for providing a peer-to-peer (P2P) communication in which a message server is excluded from an IMS network, the method comprising the steps of: (a) An initial communication establishing step of mediating a message communication related to an initial communication setting between a plurality of user terminals through which an IMS server providing a call service and a data service communicate a message based on the initial communication setting; (b) establishing a session of the P2P type with the user terminal based on the initial communication setting with at least one user terminal of the other party; And (c) a message communication step in which the user terminal with which the session is established communicates the message.

According to an aspect of the present invention, a user terminal provides a message service in a P2P manner without a message server based on an IMS network, thereby improving security and eliminating unnecessary signaling, thereby improving communication speed.

According to another aspect of the present invention, since the message server is removed, the establishment cost and operation / management of the message server are removed, and an initial communication environment for P2P message communication is established using resources and messages of the established IMS network.

According to another aspect of the present invention, there is provided a method and apparatus for maintaining a session by only updating session information without having to repeat a separate initial session setup when re-establishing a communication connection due to an event occurrence of a user terminal after a session is established, It provides easy message service.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention below, And should not be construed as interpretation.
1 is a schematic configuration diagram of a communication providing system according to an embodiment of the present invention.
Fig. 2 is a schematic processing example in which the communication providing system of Fig. 1 handles P2P transmission of a message. Fig.
3 is a schematic flowchart of a communication providing method according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be defined.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

1 is a schematic configuration diagram of a communication providing system 1 according to an embodiment of the present invention.

The communication providing system 1 according to the present invention includes an IMS server 2 that mediates initial communication settings for P2P type message communication between a sending user terminal 3 and a receiving user terminal 4 that communicate messages do.

The IMS server 2 provides a mobile service including a call service and a data service using the IMS network to the user terminals 3 and 4 through the control of the IMS core 200. [ When the originating user terminal 3 invites at least one receiving user terminal 4 to request a message service, the IMS core 200 performs a P2P type message communication between the user terminals 3 and 4 The message communication associated with the initial communication setup is mediated.

Here, the initial communication setting is such that the IMS core 200 transfers a message between the calling user terminal 3 and the receiving user terminal 4 to the recipient that the calling party invites the recipient to the message service, and the recipient accepts the message invitation The recipient's acceptance message is sent to the sender. Then, the calling user terminal 3 and the receiving user terminal 4 receive the address of the other party through intermediation of the IMS core 200 and perform P2P type message communication based on the session setting. Of course, the P2P type message communication is a communication between the originating user terminal 3 and the receiving user terminal 4 in which the session is established, without direct intermediation of a third party such as a message server. Therefore, the P2P type message communication in which the message intermediation is excluded by the separate message server improves the security of the message and saves the construction cost and management of the server equipment.

The originating user terminal 3 and the receiving user terminal 4 are communication entities that send and receive messages to each other. For convenience of description, a message service is requested, a user terminal that invites a receiver to a service in a message is indicated by a calling user terminal 3, and a user terminal responding to the invitation is indicated by a receiving user terminal 4.

When the initial communication setup is completed between the user terminals 3 and 4 through the IMS server 200, the user terminals 3 and 4 establish a session and perform P2P type message communication based on the established session .

Here, each of the user terminals 3 and 4 is provided with a message service by execution of an IM (Instant Message) application 300 or 400. That is, the IM applications 300 and 400 process the initial communication settings, the session settings, and the P2P type message communication.

In particular, when the user terminals 3 and 4 of the other party to which the session is established in the P2P type message communication need to reconfigure the communication for reasons of address change, power on-off, roaming, etc., The session can be maintained only by updating the changed information with the session information. Then, the IM applications 300 and 400 may save processing, time, and cost required to perform initial communication settings to reconnect the communication settings. If it is assumed that the re-execution of the initial communication setting is repeated, the message communication is disabled due to the signaling processing of the communication setting, and the service is delayed by the processing time.

For example, in a message scheme based on an intermediation of an IM server, message incommunication of all members may be disabled if a message incapability occurs at a terminal of any one of the message members. In addition, after the normalization of the terminal, a member of the message disabled state needs to repeat a series of initial communication settings such as connection to the IM server, login through user authentication, message connection, session connection, and so on.

Fig. 2 is a schematic processing example of the communication providing system 1 of Fig. 1 processing a P2P transmission of a message. Fig.

The IMS core 200 mediates message communication between the IM application 300 of the originating user terminal 3 and the IM application 400 of the receiving user terminal 4 in association with the initial configuration. Here, the mediated message may include an invite message, an ok message, and an acknowledgment message.

Of course, in the present invention, since the IMS server 2 uses the existing IMS core 200, it is obvious that the time and cost for constructing the message service can be saved. In addition, since the message corresponds to a message already used in a mobile service based on the IMS network, it is not necessary to add a separate message for the message service of the present invention.

First, the originating user terminal 3 selects at least one recipient and sends an invitation message (1). The IMS core 200 receives the invite message from the originating user terminal 3 and transmits it to the receiving user terminal 4 (2).

Here, the user terminal 3 of the sender who designates the recipient and invites to the message service becomes the session server, and the user terminal 4 of the invitee becomes the session client.

The invitation message transmitted from the calling user terminal 3 includes an IP address, an application ID, a service number or a port number of the user terminal 3, a telephone number of a caller, and a telephone number of a receiver.

If the recipient who has received the invitation message accepts the invitation, the recipient user terminal 4 sends an acceptance message (3). The IMS core 200 receives the acceptance message from the receiving user terminal 4 and sends it to the sending user terminal 3 (4).

Here, the acceptance message returned by the receiving user terminal 4 includes the IP address of the user terminal 4, a service number or a port number.

Then, the originating user terminal 3 having received the acceptance message transmits an acknowledgment message (5). The IMS core 200 receives the confirmation message from the originating user terminal 3 and transmits it to the receiving user terminal 4 (6).

In the above description, it is assumed that one recipient corresponds to the session client. However, the number of recipients may be two or more. Assuming that there are two or more recipients, the originating user terminal 3 can transmit an acknowledgment message including address information of the remaining recipients to each of the receiving user terminals 4 that originated the acceptance message. Then, the user using the message service can send a message with all of the users except the user as a receiver, or select at least one or more specific users as recipients to selectively send a message to the selected user.

When the initial environment setting is completed by the IMS core 200, the calling user terminal 3 and the receiving user terminal 4 use the exchanged IP address, application ID, service number, ([7]).

The established session is supported by protocols including HTTP (HyperText Transfer Protocol), FTP (File Transfer Protocol) and MSRP (Message Session Relay Protocol) according to the contents of the message service. That is, according to the support of the protocol, the contents of the message may include url, and various multimedia files may be included.

Particularly, any one of the user terminals 3 and 4 receiving a message service and having a session established may receive an event including IP change, power on / off, and roaming, . In this case, it is necessary to repeat the initial communication setup by intermediation of the message server. In the present invention, according to the session setting of the P2P environment based on the IMS network, the changed information is transmitted to the user terminal of each of the other parties And requests the update of the session information.

Assuming that the communication information has changed due to the occurrence of the event at the originating user terminal 3, the originating user terminal 3 transmits the changed information through the informing message to the receiving user terminal 4 ). The receiving user terminal 4 updates the information corresponding to the changed information received through the notification message, and replies the confirmation message to the calling user terminal 3 (9). Then, the originating user terminal 3 and the receiving user terminal 4 update the session information based on the changed information (10).

If it is assumed that the communication information is changed due to the occurrence of the event in the receiving user terminal 4, the receiving user terminal 4 transmits the changed information through the informing message to the calling user terminal 3 (⑪). The originating user terminal 3 updates information corresponding to the changed information received through the notification message and replies the confirmation message to the receiving user terminal 4 (12). Then, the originating user terminal 3 and the receiving user terminal 4 update the session information based on the changed information (13).

Therefore, once the session is established, the user terminals 3 and 4 can promptly and continuously perform message communication in response to the change of the communication information by only receiving the changed information and updating the session information.

3 is a schematic flowchart of a communication providing method according to an embodiment of the present invention.

The caller executes the IM application 300 of the calling user terminal 3, selects at least one recipient, and invites the recipient to the message service. The IMS server 2 then mediates message communication between the IM application 300 of the originating user terminal 3 and the IM application 400 of the receiving user terminal 4 in connection with the initial configuration. Here, the mediated message may include an invite message, an ok message, and an acknowledgment message.

The IMS server 2 receives the invitation message from the calling user terminal 3 and transmits the invitation message to the receiving user terminal 4 to mediate the transmission of the invitation message (S21). Here, the calling user terminal 3 requests the session server And the invited receiving user terminal 4 becomes a session client. The invitation message includes an IP address, an application ID, a service number or a port number of the calling user terminal 3, a telephone number of a caller, and a telephone number of a receiver.

If the recipient of the invitation message accepts the invitation via the IM application 400, the IMS server 2 receives the acceptance message from the recipient user terminal 4 and sends it to the originating user terminal 3, The transmission is mediated (S22). The accept message includes an IP address of the receiving user terminal 4, a service number or a port number.

Then, the IMS server 200 receives the confirmation message from the originating user terminal 3 that has received the acceptance message and transmits it to the receiving user terminal 4 (S23).

Here, assuming that the users A, B, and C 3 are provided with a message service, the calling user terminal 3 via the intermediation of the IMS server 2 sends an invitation message to the remaining two receiving user terminals 4 And receive an acceptance message from each of the receiving user terminals 4. [ The originating user terminal 3 having received the acceptance message can transmit an acknowledgment message including the address information of the other party to each of the receiving user terminals 4. [ Thus, the initial environment setting is completed between the calling user terminal 3 and the at least one receiving user terminal 4 by the IMS server 2.

When the initial environment setting is completed, the calling user terminal 3 and the at least one receiving user terminal 4 use the exchange IP address, application ID, service number or port number exchanged with each other to perform IM And establishes a session for the service (S31). Various protocols are supported according to the contents of the message service, and the contents of the message may include the url according to the support of the protocol, and various multimedia files may be included.

After the session is established, the originating user terminal 3 and the receiving user terminal 4 communicate the message based on the P2P communication (S41).

Thereafter, an event including an IP change, power on / off, and roaming may be generated in any one of the user terminals 3 and 4 provided with a session and provided with a message service, and the communication information may need to be reset .

For convenience of description, if it is assumed that the event of user C is generated at the terminal of user C among the users A, B, and C using the message service, the terminal of user C transmits the changed information to the terminals of users A and B, Request update of information. Of course, the message disabled state of the C user due to the occurrence of the event has no effect on the message communication between the users A and B, and message communication between the users A and B is normally possible. When a confirmation message is received from the terminals of the users A and B, the terminals of the users A, B, and C update the session information based on the changed information (S51). Therefore, the user terminals 3 and 4 can communicate messages promptly only by receiving the changed information and updating the session information, without repeating the initial communication setting requiring time and processing.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It goes without saying that various modifications and variations are possible within the scope of equivalence of the scope.

1: Communication providing system 2: IMS server
3: originating user terminal 4: receiving user terminal

Claims (18)

A P2P (Peer to Peer) type communication providing system in which a message server is excluded from an IMS network,
An IMS server for providing a call service and a data service based on the IMS network and mediating a message communication related to an initial communication setup among a plurality of user terminals communicating messages; And
Establishing a session setting of the P2P type with at least one user terminal of the other party based on the initial communication setting and transmitting the message to the user terminal
The communication system comprising: The method according to claim 1,
Wherein the user terminal of the sender who designates at least one recipient and invites to the message service is a session server, and the user terminal of at least one recipient becomes a session client. The method according to claim 1,
The IMS server,
Wherein the message communication of the initial communication setting includes an invite message of the sender and an ok message of the recipient in response to the invitation. The method of claim 3,
The user terminal of the sender,
The invitation message including the IP address of the sender's user terminal, the application ID, the service number or the port number, the sender's phone number, and the recipient's phone number to the user terminal of the receiver through the IMS server system. The method according to claim 3 or 4,
The receiver's user terminal,
Wherein the acceptance message including the IP address of the user terminal of the receiver and the service number or the port number is returned to the user terminal of the caller through the IMS server. The method of claim 3,
The IMS server,
Receives an acknowledgment (ACK) message from the user terminal of the originator receiving the acceptance message, and transmits the acknowledgment message to the receiver's user terminal to complete the intermediation of the initial communication setup. The method according to claim 1,
The user terminal of the sender and the user terminal of the receiver,
And establishes the session using the IP address, application ID, service number, or port number of the other party after the initial communication setting is completed. 8. The method of claim 7,
The set session,
Wherein a protocol including HTTP (HyperText Transfer Protocol), FTP (File Transfer Protocol) and MSRP (Message Session Relay Protocol) is supported according to contents of the service. The method according to claim 1,
The user terminal comprises:
And requests the update of the session information by transmitting the changed information to at least one of the user terminals of the other party in which the session is established when an event requiring session information including the IP change, power on and off, and roaming is generated. Delivery system. A method for providing peer to peer (P2P) communication in which an IMS network excludes a message server,
(a) an initial communication establishing step of mediating a message communication related to an initial communication setup between a plurality of user terminals through which an IMS server providing a call service and a data service communicate with each other based on the IMS network;
(b) establishing a session of the P2P type with the user terminal based on the initial communication setting with at least one user terminal of the other party; And
(c) a message communication step in which the user terminal with which the session is established communicates a message
To the communication device. 11. The method of claim 10,
The step (a)
Wherein the user terminal of the sender who designates at least one recipient and invites the recipient to the message service is a session server and the user terminal of at least one recipient becomes a session client. 11. The method of claim 10,
The step (a)
Wherein the IMS server mediates a message communication of the initial communication configuration including an invite message of the caller and an ok message of the recipient in response to the invitation. 13. The method of claim 12,
The step (a)
Sending, by the IMS server, the invite message including the IP address, application ID, service number or port number of the sender's user terminal, the sender's phone number, and the recipient's phone number to the recipient's user terminal To the communication device. The method according to claim 12 or 13,
The step (a)
Wherein the recipient's user terminal responds to the sender's user terminal via the IMS server with the accept message including the IP address of the recipient's user terminal and the service number or port number. 13. The method of claim 12,
The step (a)
Wherein the IMS server is configured to receive an acknowledgment (ACK) message from a user terminal of the sender who has received the acceptance message, and to forward the acknowledgment message to the recipient's user terminal to complete the intermediation of the initial communication setup. 11. The method of claim 10,
The step (b)
Wherein the user terminal of the caller and the user terminal of the receiver set the session using the IP address, application ID, service number or port number of the other party. 17. The method of claim 16,
The set session,
Wherein a protocol including HTTP (HyperText Transfer Protocol), FTP (File Transfer Protocol), and MSRP (Message Session Relay Protocol) is supported according to contents of the service. 11. The method of claim 10,
(d) When the event requiring the re-establishment of the session information including the IP change, the power on-off and the roaming occurs, the user terminal transmits the changed information to the user terminal of the at least one other party to which the session is established, Further comprising a session updating step of requesting the session to be updated.

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