KR101499697B1 - Conference server comprised in system for providing conference service in RTCWeb - Google Patents

Abstract

A conference server included in a system for providing a conference service in RTCWeb is disclosed. The disclosed conference server operates as a moderator of the conference service and is configured to provide the conference service in a RTCWeb including a first terminal running a web browser and a second terminal running as a participant of the conference service, The system of claim 1, wherein the first terminal is a conference server included in the system, and the first terminal is configured to perform communication with the first terminal and the second terminal, And a conference control server / client for controlling the removal / modification of the moderator and managing the information of the second terminal, wherein the second terminal obtains information of the conference service and performs participation / And a conference control client for controlling the conference server, Focus is in communication with the conference control server / client of the first terminal to address the request of the second terminal.

Description

A conference server included in a system for providing a conference service in RTCWeb, the conference server being comprised in a conference service in RTCWeb,

Embodiments of the present invention relate to a conference server included in a system for providing a conference service in Real-Time Communication in WEB-browsers (RTCWeb).

Standard techniques for real-time multimedia communications such as voice communication and video conferencing in web browsers are being standardized by the Internet Engineering Task Force (IETF) Working Group for RTCWeb (Real-Time Communication in WEB-browsers). In the meantime, real-time multimedia communication in web browsers has been carried out by non-standard method for each developer according to application programs. Efforts to standardize them have been made by W3C (World Wide Web Consortium) and IETF.

The services that are being considered for standardization are basically real-time multimedia communication services between web browsers. As an example, there are video conferencing, multi-user network games and the like using voice communication and video communication between respective web browsers.

FIG. 1 illustrates the concept of real-time multimedia communication in a conventional web browser.

Referring to FIG. 1, multimedia data such as voice, video, and the like is transmitted through a direct connection between web browsers. In contrast, the signal path for session connection between web browsers can be made through a separate server such as a web server. In addition, a conventional Session Initiation Protocol (SIP) can be used as the signal protocol, and various protocols such as Extensible Messaging and Presence Protocol (XMPP) can be used.

In addition to these models, it is essential to set up the media path through direct connection between Web browsers by standard methods such as media compatibility in advance.

In addition, any type of method such as a standard method or a proprietary method may be used between the web browser and the web server. However, applications that are downloaded to the web browser need only be operated through an API (Application Program Interface) in a standard web browser. These applications can be various forms such as Javascript and HTML. Currently, W3C is developing the API standard in Web browser based on HTML5 for Javascript through WebRTC (Web Applications and Device API) working group.

On the other hand, RTCWeb has unique characteristics, and an appropriate architecture is needed to provide conference service in RTCWeb using these characteristics.

In order to solve the problems of the related art as described above, the present invention proposes a conference server included in a system for providing a conference service in RTCWeb (Real-Time Communication in WEB-browsers).

Other objects of the invention will be apparent to those skilled in the art from the following examples.

To achieve the above object, according to a preferred embodiment of the present invention, there is provided a method for providing a conference service, which operates as a moderator of a conference service and which operates as a first terminal on which a web browser is executed and a participant of the conference service, 1. A conference server included in a system for providing a conference service in an RTCWeb including a terminal, the conference server comprising: a focus for performing communication with the first terminal and the second terminal; And a conference control server / client for controlling generation / generation of the second terminal and addition / deletion of the second terminal and moderator change in the conference service and managing information of the second terminal, A conference for acquiring information of a service and controlling participation / withdrawal in the conference service Troll client; including and focus of the conference server, the conference server, characterized in that in communication with the conference control server / client of the first terminal is provided to address the request of the second terminal.

The first terminal further comprises a floor control server for controlling the floor of the conference by accepting / abolishing a permission to transmit a media stream, wherein the second terminal communicates with a floor control server of the first terminal Further comprising: a floor control client for requesting permission to transmit a media stream or releasing a configured floor, wherein the conference server mixes media streams transmitted by the first terminal and the second terminal, And a mixer for transmitting the media stream to the first terminal and the second terminal.

Wherein each of the first terminal and the second terminal further comprises a presence client for transmitting presence information from the presence client of the first terminal and the presence client of the second terminal, And a presence server for transmitting the collected presence information to a presence client of the first terminal and a presence client of the second terminal.

The conference control server / client of the first terminal transmits a conference generation request message including information of a conference to be generated to the focus of the conference server, and the focus of the conference server is transmitted to the first terminal based on the conference generation request message And transmits a conference creation response message for negotiating information to the conference control server / client of the first terminal. When the conference control server / client of the first terminal agrees to negotiate the information of the conference, The focus of the conference server may generate the conference based on the negotiation agreement message for the conference creation.

The information of the conference includes at least one of identification information of the conference, a time at which the conference was generated, a time interval for indicating that the second terminal can participate in the conference, a maximum number of the second terminals capable of participating in the conference, The number of the second terminals participating in the conference, the maximum number of the second terminals capable of simultaneously transmitting the media, the number of the second terminals transmitting the media simultaneously, the information of the predefined default presence, Codec < / RTI >

A time period for informing that the user can participate in the conference, a maximum number of the second terminals capable of participating in the conference, a maximum number of the second terminals capable of simultaneously transmitting the media, May be the focus of the conference and the information negotiable at the conference control server / client of the first terminal.

The conference server may further include a notification server for notifying information related to an event in the conference.

The conference control client of the second terminal not participating in the conference service transmits a conference service participation request message to the focus of the conference server and the focus of the conference server is switched between the mixer of the conference server and the non- The conference control server / client of the first terminal transmits the conference service participation request message to the conference control server / client of the first terminal when the supportable codec exists, and the conference control server / Adds the information of the second terminal that has not been added to the participant list of the first terminal and transmits a conference service participation acceptance message to the focus of the conference server, and the focus of the conference server is set to the information of the non- The conference server To the participant list to change the non-participating second terminal to a second terminal participating in the conference service, transmit the conference service participation acceptance message to the conference control client of the participating second terminal, The notification server may notify the other second terminal participating in the conference service of a message informing that a new participant (the participating second terminal) has been added.

Wherein the floor control client of the participating second terminal performs session negotiation with the mixer of the conference server, and after performing the session negotiation, the floor control client of the participating second terminal receives, from the mixer of the conference server, Lt; / RTI > media stream.

The conference control client of the second terminal, which exits the conference service, transmits a conference service exit request message to the focus of the conference server. The focus of the conference server is transmitted to the conference server based on the conference service exit request message. Removes the leaving second terminal from the participant list and sends a conference service exit response message to the conference control client of the leaving second terminal, and the notification server of the conference server notifies the exiting participant The conference control server / client of the first terminal notifies the first terminal and the other second terminal participating in the conference service of a message informing that there is a second terminal To remove the second terminal And the conference control client of the other second terminal may remove the leaving second terminal from the participant list of the other second terminal.

The floor control client of the second terminal that has exited the conference service termination response message terminates the peer connection for transmitting / receiving the media stream and the mixer of the conference server, and the mixer of the conference server transmits the media stream to the first terminal The floor control server of the second terminal and the floor control client of the other second terminal.

The floor conference client of the second terminal for transmitting the media stream transmits a media stream transmission request message to the focus of the conference server and the focus of the conference server is transmitted to the floor control server of the first terminal, The floor control server / client of the first terminal transmits a media stream transmission response message to the focus of the conference server based on the media stream transmission request message, and the focus of the conference server transmits the media stream transmission response To the floor control client of the second terminal transmitting the media stream, and the floor control client of the second terminal transmitting the media stream transmits a media stream based on the media stream transmission response message Wherein the mixer of the conference server further mixes the media stream transmitted from the second terminal to a previously mixed media stream and transmits the mixed media stream to the first terminal and another second terminal participating in the conference service, The terminal may renegotiate the session with the terminal to transmit the mixed media stream.

The system for providing the conference service in the RTCWeb changes the moderator to the second terminal acting as a new moderator on behalf of the first terminal and the second terminal acting as the new moderator changes the conference control server / The conference control server / client of the first terminal transmits a moderator change request message to the focus of the conference server, and the notification server 213 of the conference server transmits a moderator change request message to the second terminal The conference control server / client of the second terminal acting as the new moderator transmits the moderator change response message to the conference based on the moderator change request message, And the focus of the conference server transmits the modulator change response message to the conference control server / client of the first terminal, and the notification server of the conference server transmits the modulator change response message to another second The conference control server / client of the second terminal acting as the new moderator transmits a moderator participation request message of the conference service, and the focus of the conference server is transmitted to the new moderator And transmits the moderator participation request message of the conference service to the second terminal, which is the changed moderator, and transmits the moderator participation request message to the second terminal, which is the modified moderator, with the second terminal operating as the modified moderator, The floor control server of the horse performs session negotiation and the second terminal as the changed moderator can transmit a message to inform the first terminal through the conference server that the old moderator has been exited.

According to the present invention, a system for efficiently providing a conference service in the RTCWeb can be provided.

FIG. 1 illustrates the concept of real-time multimedia communication in a conventional web browser.
FIG. 2 is a diagram illustrating a system for providing a conference service in the RTC Web according to an embodiment of the present invention. Referring to FIG.
3 is a flowchart showing a flow of an operation of generating a conference service in the RTCWeb according to an embodiment of the present invention.
4 is a flowchart illustrating a flow of an operation of a second terminal participating in a conference service in the RTCWeb, according to an embodiment of the present invention.
5 is a flowchart illustrating a flow of an operation in which a second terminal participating in a conference service in the RTCWeb exits according to an embodiment of the present invention.
6 is a flowchart illustrating a flow of an operation of a second terminal participating in a conference service in the RTCWeb to transmit a media stream according to an embodiment of the present invention.
FIG. 7 is a flowchart illustrating a flow of an operation of a first terminal participating in a conference service in the RTCWeb to change a modder radar according to an embodiment of the present invention.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing.

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

FIG. 2 is a diagram illustrating a system for providing a conference service in Real-Time Communication in WEB-browsers (RTCWeb) according to an embodiment of the present invention.

Referring to FIG. 2, a system 200 according to an exemplary embodiment of the present invention includes a conference server 210, a first terminal 220, and at least one second terminal 230.

The conference server 210 is a web server, and the first terminal 220 and the second terminal 230 are terminal devices on which a web browser supporting the RTC Web function is executed. The first terminal 220 operates as a moderator of the conference service and the at least one second terminal 230 operates as participants of the conference service. Each of the first terminal 220 and the second terminal 230 communicates with the conference server 210 through a signaling channel.

When an application program is executed in a web browser executed by the first terminal 220 and the second terminal 230, each web browser does not reload the application program, Can be changed. Accordingly, the users of the first terminal 220 and the second terminal 230 can easily create a conference or participate in a conference via a web browser, and establish a real-time multimedia communication session without a third party resource .

The conference server 210 includes a focus 211, a mixer 212, a notification server 213, and a presence server 214, The first terminal 220 includes a conference control server / client 221, a floor control server 222 and a presence client 223 and the second terminal 230 includes a conference control client 231, A control server 232 and a presence client 233.

In detail, the conference control server / client 221 of the first terminal 220 includes a focus 2211 and a conference control client 2212. The focus 2211 of the first terminal 220 serves as a conference control server for managing information or membership of participants. The conference control client 2212 of the first terminal 220 communicates with the focus 211 of the conference server 210 and creates a conference and adds / removes the second terminal 230 in the conference service, And the like. The conference control client 231 of the second terminal 230 obtains the information of the conference service and controls participation / exit of the conference service. The focus 211 of the conference server 210 communicates with the conference control server / client 221 of the first terminal 220 to resolve the request of the second terminal.

The floor control server 222 of the first terminal 220 controls the floor and informs the state of the floor. That is, the floor control server 222 of the first terminal 220 controls the floor of the conference by granting / revoking permission to transmit the media stream. The second terminal 230 communicates with the floor control server 222 of the first terminal 220 and requests permission to transmit the media stream or releases the established floor. The mixer 212 of the conference server 210 mixes the media streams transmitted by the first terminal 220 and the second terminal 230 and transmits the mixed media streams to the first terminal 220 and the second terminal 230 230). In addition, the mixer 212 of the conference server 210 maintains / maintains connections with all the participants in the conference, can perform session negotiation, and functions related to transcodes are also performed in the mixer 212.

The presence clients 223 and 233 of the first terminal 220 and the presence server 223 of the second terminal 230 transmit the presence information and the presence server 213 of the conference server 210 transmits the presence information of the first terminal 220 The presence client 223 and the second terminal 230 of the first terminal 220 and the presence client 233 of the second terminal 230, To the presence client 233 of FIG. Then, the notification server 214 of the conference server 210 notifies the information related to the event in the conference.

Hereinafter, the operation of providing the conference service in the RTC Web will be described in more detail with reference to FIG. 3 through FIG.

3 is a flowchart showing a flow of an operation of generating a conference service in the RTCWeb according to an embodiment of the present invention. Hereinafter, a process performed in each step will be described in detail.

First, in step S302, the conference control server / client 221 of the first terminal 220 transmits a conference generation request message including information of a conference to be generated to the focus 211 of the conference server 210 . For example, the conference creation request message may be a " CCP (Compression Control Protocol) Request "message, and the message includes information such as a purpose of the message, information of the conference, and identification information of the first terminal 220 ModeratorID) (CCP Request <Create, Conference Information, ModeratorID>).

According to an embodiment of the present invention, the information of the conference includes at least one of the following nine pieces of information, and the nine pieces of information are as follows.

i) identification information of the conference,

ii) the time the conference was created

iii) a time interval for informing that at least one second terminal 230 can participate in the conference

iv) the maximum number of second terminals 230 that can participate in the conference

v) the number of second terminals 230 participating in the conference

vi) the maximum number of second terminals 230 capable of simultaneously transmitting media

vii) the number of the second terminals 230 transmitting the media at the same time

viii) Information on predefined default presence

vx) Media codec

Next, in step S304, the focus 211 of the conference server 210 transmits a conference generation response message for negotiating the information of the conference based on the conference generation request message to the conference control server / To the client (221). For example, the conference creation response message may be a "CCP Response" message, and the message may include a destination of the message (Negotiation) and a conference information (CCP Response <Negotiation, Conference Information>).

According to an embodiment of the present invention, among the information of the 9 conferences, a time interval for informing that the user can participate in the conference, a maximum number of the second terminals 230 that can participate in the conference, At least one of the maximum number of terminals 230 and the media codec may be information that can be negotiated in the conference control server / client 221 of the first terminal 220 with the focus 210 of the conference. Therefore, the four conference information may be included in the 'conference information' in the conference generation response message.

If the conference control server / client 221 of the first terminal 220 agrees to the negotiation of the information of the conference in step S306, the negotiation acceptance message for the conference creation is transmitted to the conference server 210 (211). As an example, the negotiation agreement message for the conference creation may be 'CCP Request <Accept, Conference Information, ModeratorID>' including the message's acceptance, conference information, and moderator identification information.

Finally, in step S308, the focus 211 of the conference server 210 generates a conference based on the negotiation agreement message for the conference generation, and in step S310, the focus 211 of the conference server 210 Transmits a negotiation response message for conference creation to the conference control server / client 221 of the first terminal 220. As an example, the negotiation response message for the conference creation may be a 'CCP Response OK, Conference Information''containing the purpose of the message (OK) and the information of the conference.

FIG. 4 is a flowchart illustrating a flow of an operation of a second terminal 230 participating in a conference service in a RTCWeb, according to an embodiment of the present invention. Hereinafter, a process performed in each step will be described in detail.

In step S402, if the second terminal 230 does not know which conference is generated, the second terminal 230 does not receive the information request message of the created conference from the conference server 210 To the focus 211. For example, the identification information request message of the conferences may be 'CCP Request <Conferences>'. In step S404, the focus 211 of the conference server 210 transmits the information response message of the generated conferences to the second terminal 230 that has not been in the conference. For example, the identification information response message of the conferences may be 'CCP Response <Conferences, Conferences' Information>'. However, if the second terminal 230 does not know the information about the conference, steps S402 and S404 may be omitted.

In step S406, the conference control client 231 of the second terminal 230 transmits the conference service participation request message to the focus 211 of the conference server 210. [ For example, the conference service participation request message may be 'CCP Request <conference, conferenceID, Capabilities, ParticipantID, Participant>'. In step S408, the focus 211 of the conference server 210 determines whether there is a codec that can be supported between the mixer 212 of the conference server 210 and the second terminal 230 that is not involved.

If there is no codec that can be supported between the mixer 212 of the conference server 210 and the second terminal 230 that is not involved in the conference, the focus 211 of the conference server 210 in step S410, And transmits the conference service participation rejection message to the conference control client 231 of the second terminal 230. For example, the rejection message for the conference service participation may be 'CCP Response <Deny, ParticipantID, Information>'. Conversely, if there is a codec that can be supported between the mixer 212 of the conference server 210 and the second terminal 230 that is not involved, the focus 211 of the conference server 210 in step S412 is transmitted to the first terminal 220 to the conference control server / client 221 of the conference service participation request message.

In step S414, the conference control server / client 221 of the first terminal 220 transmits the information of the second terminal 230 that has not been registered to the first terminal 220 To the conference server 210, and transmits a conference service participation acceptance message to the conference server 210 in step S416. For example, the conference service acceptance message may be 'CCP Respond <Accept, ParticipantID>'.

In step S418, the focus 211 of the conference server 210 adds the information of the second terminal 230, which has not been taken, to the list of participants of the conference server 210, To a second terminal participating in the conference service. In step S420, the focus 211 of the conference server 210 delivers a conference service participation acceptance message to the conference control client 231 of the participating second terminal 230. [ For example, the received conference service participation acceptance message may be 'CCP Respond <Accept, ParticipantID, Conference Information, Connection information>'.

In step S422, the notification server 113 of the conference server 210 transmits a message informing that the new participant (the participating second terminal 230) has been added to another conference participant 2 &lt; / RTI &gt; For example, a message indicating that a new participant has been added may be 'CCP Notify <Add, ParticipantID>'.

Next, in step S424, the floor control client 232 of the participating second terminal 230 performs session negotiation with the mixer 213 of the conference server 210. [ Accordingly, after performing the session negotiation, the floor control client 231 of the participating second terminal 230 may receive the mixed media stream from the mixer 213 of the conference server 210.

In this case, the first terminal 220 may transmit a conference request message to the conference terminal 210 through the conference server 210. In this case, the first terminal 220 may reject the participation request of the second terminal 230, The service participation refusal message can be transmitted.

5 is a flowchart illustrating a flow of an operation in which a second terminal 230 participating in a conference service in the RTCWeb exits according to an embodiment of the present invention. Hereinafter, a process performed in each step will be described in detail.

First, in step S502, the conference control client 231 of the second terminal 230, which is exiting the conference service, transmits a conference service exit request message to the focus 211 of the conference server 210. For example, the conference service exit request message may be 'CCP Request <Leave, ConferenceID>'.

Next, the focus 211 of the conference server 210 removes the exiting second terminal 230 from the participant list of the conference server 210 based on the conference service exclusion request message in step S504 , In step S506, transmits a conference service exit response message to the conference control client 231 of the leaving second terminal 230. [ For example, the conference service exit response message may be 'CCP Request <OK, Leave>'. In step S508, the notification server 213 of the conference server 210 sends a message to the first terminal 220 notifying that there is a participant to be exited (the exiting second terminal 230) And the other second terminal 230 participating in the conference service. For example, the message to notify that there is an exiting participant may be 'CCP Notify <Leave, ParticipantID>'.

Then, in step S510, the conference control server / client 221 of the first terminal 220 removes the leaving second terminal 230 from the participant list of the first terminal 220. In step S512, the conference control client 231 of the second terminal 230 removes the second terminal 230 from the participant list of another second terminal 230. [

In step S514, the floor control client 231 of the second terminal 230, which has received the conference service exit response message, transmits / receives the media stream to / from the mixer 212 of the conference server 210, Terminates the receiving peer connection. In step S516, the mixer 212 of the conference server 210 performs session negotiation with the floor control server 222 of the first terminal 220 and the floor control client 232 of the other second terminal 230, . In step S518, the mixer 212 of the conference server 210 terminates the peer connection with the second terminal 230 to be exited, and in step S520, the floor control of the first terminal 220 The client 222 removes the exiting second terminal 230 from the participant list transmitting the media stream and in step S522 the floor control client 232 of the second terminal 230 transmits the media stream And removes the exiting second terminal 230 from the transmitting participant list.

The conference control server / client 221 of the first terminal 220 that exits the conference terminal 210 is the focus 211 of the conference server 210. In this case, The focus 211 of the conference server 210 removes the exiting first terminal 220 from the participant list of the conference server 210 and transmits at least one second terminal 220 participating in the conference 230 is terminated, and conferences that are in the process of being understood by the conference server 210 are removed.

FIG. 6 is a flowchart illustrating a flow of an operation in which a second terminal 230 participating in a conference service in the RTCWeb transmits a media stream according to an embodiment of the present invention. Hereinafter, a process performed in each step will be described in detail.

First, in step S602, the floor conference client 232 of the second terminal 230, which transmits the media stream, transmits a media stream transmission request message to the focus 211 of the conference server 210. For example, the media stream transmission request message may be a 'talk burst control protocol (TBCP) request'. The focus 211 of the conference server 210 delivers a media stream transmission request message to the floor control server 222 of the first terminal 220 in step S604.

Subsequently, in step S606, the floor control server / client 222 of the first terminal 220 transmits a media stream transmission response message to the focus 211 of the conference server 210 based on the media stream transmission request message send. As an example, the media stream transmission response message may be 'TBCP Granted 1 ParticipantA'. In step S608, the focus 211 of the conference server 210 delivers the media stream transmission response message to the floor control client 232 of the second terminal 230 transmitting the media stream.

Next, in step S610, the floor control client 232 of the second terminal 230 transmitting the media stream transmits the media stream to the mixer 212 of the conference server 210 based on the media stream transmission response message send.

Thereafter, in step S612, the mixer 212 of the conference server 210 further mixes the media stream transmitted from the second terminal 230 to the previously mixed media stream. In step S614, the mixer 212 of the conference server 210 performs session renegotiation with the first terminal 220 and the other second terminal 230 participating in the conference service to transmit the further mixed media stream send.

According to one embodiment of the present invention, session renegotiation may be performed based on triggers to activate MediaStreamTrack of authorized participants. This trigger is provided by the MediaStreamTrack object for the peer connection.

Finally, in step S616, the floor control server 222 of the first terminal 220 and the floor control server 232 of the second terminal 230 transmit the media stream to the second terminal 230, To the participant list as &quot; the participant transmitting the media stream &quot;.

When the first terminal 220 rejects the media stream transmission request, the floor control server / client 222 of the first terminal 220 transmits a media stream transmission reject message to the media stream To the floor control server 222 of the first terminal 220 to which the first terminal 220 transmits. As an example, the media stream transfer reject message may be 'TBCP Denied'.

7 is a flowchart illustrating a flow of an operation in which a first terminal 220 participating in a conference service in the RTCWeb changes a modder radar according to an embodiment of the present invention.

That is, referring to FIG. 7, a system for providing a conference service in the RTCWeb changes a moderator to a second terminal 230 acting as a new moderator on behalf of the first terminal 220. At this time, the second terminal 230 'acting as a new moderator includes the conference control server / client 231' instead of the conference control client 231 like the first terminal 220, And a floor control server 232 'instead of the floor control server 232'.

Hereinafter, a process performed in each step will be described in detail.

First, in step S702, the conference control server / client 221 of the first terminal 220 selects a second terminal 230 'that operates as a new moderator among the at least one second terminal 230 . The conference control server / client 221 of the first terminal 220 transmits a moderator change request message to the focus 211 of the conference server 210 in step S704. Here, the moderator change request message includes the identification information of the second terminal 230 ', which is a new moderator. As an example, the modder change request message transmitted from the first terminal 220 may be 'CCP Request <Delegate, New Moderator>'. Thereafter, in step S706, the notification server 213 of the conference server 210 transmits a message informing that the moderator has been changed to the second terminal 230 'acting as the new moderator. As an example, the message informing that the moderator has been changed may be 'CCP Notify <Delegated>'.

Next, in step S708, the conference control server / client 231 'of the second terminal 230' acting as a new moderator transmits a moderator change response message to the conference server 210 based on the moderator change request message To the focus 211. As an example, the moderator change response message may be 'CCP Respond <OK, Delegating>'. The focus 211 of the conference server 210 transmits a modality change response message to the conference control server / client 221 of the first terminal 220 in step S710. Thereafter, in step S712, the notification server 213 of the conference server 210 transmits a message informing that the moderator is changed to another second terminal 230 participating in the conference service. As an example, a message indicating that a moderator has changed may be 'CCP Notify <Delegating>'

Subsequently, in step S714, the conference control server / client 231 'of the second terminal 230' acting as a new moderator transmits a moderator participation request message of the conference service. As an example, the moderator participation request message of the conference service may be 'CCP Request <Join, ConferenceID, ParticipantID, Moderator>. Thereafter, the focus 210 of the conference server 210 sets the second terminal 230 'acting as a new moderator to the changed moderator in step S716, and in step S718, the moderator of the conference service And transmits the participation request message to the second terminal 230 ', which is the changed moderator. As an example, the moderator participation response message of the conference service may be 'CCP Respond <Accept, ParticipantID, Conference Information, Connection Information>'.

Next, in step S720, the mixer 112 of the conference server 110 and the floor control server 232 'of the second terminal 230', which is the moderator, perform session negotiation, and in step S722, The second terminal 230 ', which is the moderator, transmits a message to the first terminal 220 via the conference server 210 to inform that the old moderators have been exited. As an example, a message indicating that an old moderator has been removed may be 'CCP Respond <OK, Delegated>'.

In addition, the above-described technical features may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, and the like, alone or in combination. The program instructions recorded on the medium may be those specially designed and constructed for the embodiments or may be available to those skilled in the art of computer software. Examples of computer-readable media include magnetic media such as hard disks, floppy disks and magnetic tape; optical media such as CD-ROMs and DVDs; magnetic media such as floppy disks; Magneto-optical media, and hardware devices specifically configured to store and execute program instructions such as ROM, RAM, flash memory, and the like. Examples of program instructions include machine language code such as those produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter or the like. The hardware device may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

As described above, the present invention has been described with reference to particular embodiments, such as specific elements, and limited embodiments and drawings. However, it should be understood that the present invention is not limited to the above- Various modifications and variations may be made thereto by those skilled in the art to which the present invention pertains. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

Claims (13)

A conference included in a system for providing the conference service in a RTCWeb that acts as a moderator of the conference service and includes a first terminal running a web browser and a second terminal running as a participant of the conference service and running a web browser, In the server,
A focus for performing communication with the first terminal and the second terminal; And
And a mixer for mixing the media streams transmitted by the first terminal and the second terminal and transmitting the mixed media streams to the first terminal and the second terminal,
The first terminal may include a conference control server / client for controlling generation of the conference, addition / removal of the second terminal in the conference service and moderator change, and managing information of the second terminal; And a floor control server for controlling the floor of the conference by accepting / abolishing permission to transmit the media stream,
The second terminal comprising: a conference control client for obtaining information of the conference service and controlling participation / withdrawal in the conference service; And a floor control client for communicating with the floor control server of the first terminal and requesting permission to transmit a media stream or releasing a configured floor,
Wherein the focus of the conference server communicates with the conference control server / client of the first terminal to resolve the request of the second terminal. delete The method according to claim 1,
Wherein each of the first terminal and the second terminal further comprises a presence client for transmitting presence information,
Wherein the conference server receives the presence information from each of the presence client of the first terminal and the presence client of the second terminal and transmits the presence information to the presence client of the first terminal and the presence client of the second terminal, And a presence server for transmitting the presence server to the presence server. Claim 4 has been abandoned due to the setting registration fee. The method of claim 3,
The conference control server / client of the first terminal transmits a conference generation request message including information of a conference to be generated to the focus of the conference server, and the focus of the conference server is transmitted to the first terminal based on the conference generation request message Transmits a conference generation response message for negotiating information to the conference control server / client of the first terminal,
The conference control server / client of the first terminal transmits a negotiation agreement message for the conference generation to the focus of the conference server when the conference control server / client of the first terminal agrees to the negotiation of the information of the conference, And the conference server generates the conference based on the negotiation agreement message. Claim 5 has been abandoned due to the setting registration fee. 5. The method of claim 4,
The information of the conference includes at least one of identification information of the conference, a time at which the conference was generated, a time interval for indicating that the second terminal can participate in the conference, a maximum number of the second terminals capable of participating in the conference, The number of the second terminals participating in the conference, the maximum number of the second terminals capable of simultaneously transmitting the media, the number of the second terminals transmitting the media simultaneously, the information of the predefined default presence, A codec, and a codec. Claim 6 has been abandoned due to the setting registration fee. 6. The method of claim 5,
A time period for informing that the user can participate in the conference, a maximum number of the second terminals capable of participating in the conference, a maximum number of the second terminals capable of simultaneously transmitting the media, Wherein the at least one of the conference information is information that can be negotiated in the conference control server / client of the first terminal with the focus of the conference. The method according to claim 1,
Wherein the conference server further comprises a notification server for notifying information related to an event in the conference. Claim 8 has been abandoned due to the setting registration fee. 8. The method of claim 7,
The conference control client of the second terminal not participating in the conference service transmits a conference service participation request message to the focus of the conference server,
The focus of the conference server is to deliver the conference service participation request message to the conference control server / client of the first terminal when a codec that can be supported exists between the mixer of the conference server and the second terminal that has not missed,
Wherein the conference control server / client of the first terminal adds the information of the second terminal that has not attended to the participant list of the first terminal based on the conference service participation request message, Sends an acceptance message,
The focus of the conference server may be changed by adding the information of the second terminal that has not attended to the list of participants of the conference server to the second terminal participating in the conference service, The conference service acceptance message is transmitted to the conference control client of the terminal, and the notification server of the conference server transmits a message informing that a new participant (the participating second terminal) has been added to the conference service client in advance And notifies the second terminal to another terminal. Claim 9 has been abandoned due to the setting registration fee. 9. The method of claim 8,
Wherein the floor control client of the participating second terminal performs session negotiation with the mixer of the conference server, and after performing the session negotiation, the floor control client of the participating second terminal receives, from the mixer of the conference server, Lt; RTI ID = 0.0 &gt; a &lt; / RTI &gt; media stream. Claim 10 has been abandoned due to the setting registration fee. 8. The method of claim 7,
The conference control client of the second terminal, which exits the conference service, transmits a conference service exit request message to the focus of the conference server,
The focus of the conference server may be configured to remove the second terminal from the participant list of the conference server based on the conference service exit request message and send a conference service exit response message to the conference control client of the second terminal The notification server of the conference server notifies the first terminal and the other second terminal participating in the conference service of a message notifying that there is an exiting participant (the exiting second terminal)
The conference control server / client of the first terminal removes the leaving second terminal from the participant list of the first terminal, and the conference control client of the other second terminal removes the leaving from the participant list of the other second terminal The second terminal is deleted. Claim 11 has been abandoned due to the set registration fee. 11. The method of claim 10,
The floor control client of the second terminal that has exited the conference service termination response message terminates the peer connection to transmit / receive the media stream with the mixer of the conference server,
Wherein the mixer of the conference server re-performs session negotiation with the floor control server of the first terminal and the floor control client of the other second terminal. Claim 12 is abandoned in setting registration fee. 8. The method of claim 7,
The floor conference client of the second terminal for transmitting the media stream transmits a media stream transmission request message to the focus of the conference server and the focus of the conference server is transmitted to the floor control server of the first terminal, Lt; / RTI &gt;
The floor control server / client of the first terminal transmits a media stream transmission response message to the focus of the conference server based on the media stream transmission request message, and the focus of the conference server transmits the media stream transmission response message to the media To the floor control client of the second terminal transmitting the stream,
The floor control client of the second terminal transmitting the media stream transmits a media stream to the mixer of the conference server based on the media stream transmission response message,
Wherein the mixer of the conference server further mixes the media stream transmitted from the second terminal to the previously mixed media stream and performs session renegotiation with the first terminal and another second terminal participating in the conference service, And transmits the mixed media stream. Claim 13 has been abandoned due to the set registration fee. 8. The method of claim 7,
The system for providing the conference service in the RTCWeb changes the moderator to the second terminal acting as a new moderator on behalf of the first terminal and the second terminal acting as the new moderator changes the conference control server / Servers,
The conference control server / client of the first terminal transmits a moderator change request message to the focus of the conference server, and the notification server 213 of the conference server transmits the modder change request message to the second terminal operating as the new moderator, A message indicating that the change has been made,
The conference control server / client of the second terminal acting as the new moderator transmits the modder change response message to the focus of the conference server based on the moderator change request message, and the focus of the conference server is changed to the modulator change response message To the conference control server / client of the first terminal, and the notification server of the conference server transmits a message informing that the moderator is changed to another second terminal participating in the conference service,
The conference control server / client of the second terminal operating as the new moderator transmits a moderator participation request message of the conference service, and the focus of the conference server sets the second terminal acting as the new moderator to the changed moderator Transmits a moderator participation request message of the conference service to the second terminal, which is the moderator,
The mixer of the conference server and the floor control server of the second terminal, which is the changed moderator, perform session negotiation, and the second terminal, which is the modulator, informs the first terminal through the conference server that the old moderators have been withdrawn Message to the conference server.

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