JP5905048B2 - Multimedia conferencing system and method between universal plug-and-play (UPnP) capable telephony devices and wireless area network (WAN) devices - Google Patents

Description

The present invention relates to the field of communications, and more particularly to multimedia conferencing between UPnP capable telephony devices and WAN devices.

Universal Plug and Play (UPnP) is a set of computer network protocols announced at the UPnP Forum. The goal of the UPnP Forum is to enable seamless connection of devices and simplify network implementation in home data sharing, communication, entertainment, and corporate environments. The above goal is achieved by defining and announcing a UPnP device control protocol created by UPnP based on an open Internet-based communication standard.

 The UPnP configuration enables peer-to-peer networking of personal computers (PCs), networked devices, and wireless devices. The above configuration corresponds to a distributed open type configuration based on set standards (UPnP telephony device / IP, UDP, HTTP, and XML). The UPnP configuration supports zero-configuration networking. UPnP compatible devices from any manufacturer can dynamically join the network, obtain IP addresses, inform their names, communicate their performance upon request, etc. The presence / absence and performance of this device can be known.

 Similarly, UPnP devices can automatically leave the network without providing unwanted state information. The UPnP protocol provides discovery, control, and eventing mechanisms. Discovery can be done using the Simple Service Delivery (SSD) protocol. All control messages are in the form of an Extended Markup Language (XML). Eventing follows the GENA (General Event Notification Architecture) protocol. By using such technology, UPnP makes the UPnP device immediately available or unavailable to other devices in the network.

The UPnP Forum also provides telephony services that extend the user experience in the home to connect to telephony services such as message services, presence services, and call processing (PS / CS call) services. Similar to UPnP DA, telephony has three types of devices: a telephony server (TS) that provides messages and presence-related services to users, and the operations provided by the TS. A telephony control point (TCP) and a telephony client (TC) device that performs media-related processing and provides / receives input and output to / from the TS are defined.

 The UPnP telephony service uses a Wide Area Network (WAN) call technology, such as VOIP or other call technology, to allow users to make calls to users outside the UPnP network. However, since UPnP telephony networks cannot support all types of media content, the UPnP telephony service is not a telephone call media session for two or more WAN users, and a user calls on a single WAN device. Allow that. For example, a television can display plain text and may not support video. If video frames need to be extracted, media negotiation must be performed before setting up a multimedia conference session. Furthermore, the WAN device does not know the UPnP telephony device, or the media performance of the TC.

 UPnP telephony devices will not support media content that is not supported from WAN devices in teleconferencing media sessions (UPnP telephony devices do not support at all) unless media performance such as Multipurpose Internet Mail extensions (MIME) form is considered. Receiving can generate a user experience that does not match the conference call media session. Currently, dynamic information needs to be pushed to the user rather than being brought from the UPnP telephony device, so the UPnP telephony service is responsible for dynamic session information related to the conference call media session (eg, The user information that leaves or participates in the session cannot be obtained and provided.

WALKER, M. et al., New Uses, Proposed Standards, and Emergent Device Classes for Digital Home Communications, INTEL TECHNOLOGY JOURNAL, 2006, Vol. 10, No. 1, pp. 67-75

The present invention provides a multimedia conferencing system and method between a Universal Plug and Play (UPnP) telephony device and a Wide Area Network (WAN) device.

At least one Telephony control Point (TCP) in a Universal Plug and Play (UPnP) telephony-based home network according to an aspect of the present invention, and one or more associated with the at least one TCP A multimedia conference method between a UPnP-capable telephony device including a telephony client (TC) device and a plurality of wide area network (WAN) devices includes a plurality of WAN devices through at least one TCP requesting a session. And a telephony server (TS) in the UPnP telephony-based home network receives the at least one TCP based on the session request. Comprising the step of setting the multimedia conference session between the first TC and the plurality of WAN apparatus communicating.

 According to another aspect of the present invention, a UPnP telephony-based home network system includes at least one telephony control point (TCP) for starting a multimedia conference session with a plurality of wide area network (WAN) devices through a session request. And one or more Telephony client (TC) devices coupled to the at least one TCP, and one of the one or more TCs, and the at least one TCP. A telephony server (TS) configured to set up a multimedia conference session between the one or more TCs and the plurality of WAN devices based on the session request.

 Other features of embodiments of the present invention will become apparent from the accompanying drawings and the following detailed description. The description of the drawings below is merely exemplary and should not be construed to limit the scope of the present invention.

According to the present invention, a multimedia conference system and method between a universal plug and play (UPnP) telephony device and a wide area network (WAN) device can be provided.

Universal Plug and Play (Universal) capable of multimedia conferencing between one or more Telephony Client (TC) devices and a Wide Area Network (WAN) device according to an embodiment of the present invention It is a block diagram of a plug and play (UPnP) telephony-based home network system. 3 is a step flow chart illustrating a preferred method of multimedia conference between a TC and a WAN device in a UPnP telephony-based home network system according to an embodiment of the present invention. 2 is a step flow diagram illustrating a preferred method in which a telephony control point (TCP) according to an embodiment of the present invention adds or removes at least one WAN device from an ongoing multimedia conference session. 3 is a step flow diagram illustrating a preferred method of providing media content during an ongoing multimedia conference session based on local media performance information associated with a TC according to an embodiment of the present invention. 3 is a step flow diagram illustrating a preferred method of joining a multimedia conference session in progress on a WAN device according to an embodiment of the present invention. FIG. 11 illustrates an example computing system environment suitable for implementing embodiments of the invention.

The present invention provides a multimedia conferencing system and method between a universal plug and play telephony device and a wide area network device. The following detailed description of embodiments of the present invention will be described with reference to the accompanying drawings, which illustrate specific embodiments in which the invention may be practiced. Embodiments, various features, and advantages of the present invention will be described in detail with reference to the embodiments described in the accompanying drawings and the following description. However, these embodiments do not limit the present invention. Descriptions of known components and processing techniques will be omitted if it is determined to obscure the subject matter of the embodiments of the present invention. The examples used in the present invention are provided to assist in a more general understanding of the present invention, and it is understood by those skilled in the art that the present invention can be practiced without such specific matters. It is self-evident. Accordingly, the above examples should not be understood as limiting the scope of the invention.

FIG. 1 illustrates multimedia between one or more Telephony Clients (TC) devices 101A-N and Wide Area Network (WAN) devices 116A-N according to one embodiment of the invention. 1 is a block diagram of a universal plug and play (UPnP) telephony-based home network system 100 capable of a conference. FIG. In FIG. 1, the UPnP telephony-based home network system 100 includes a number of UPnP-capable telephony devices that are communicatively coupled to a telephony server (TS) 106. The TS 106 is connected to the WAN devices 116A-N via the WAN 114.

 The UPnP capable telephony devices 102A-N include one or more Telephony Control Points (TCPs) 102A-N and one or more Telephony Clients (Telephony Clients) associated with each of the TCPs 102A-N. : TC) devices 101A-N. Each of the UPnP capable telephony devices, as shown in FIG. 1, discloses, modifies and updates local media performance and participates in a multimedia conference session associated with the WAN devices 116A-N. Is provided. The multimedia conference session is associated with a list of WAN devices, or a conference group identifier associated with one or more WAN devices 116A-N, a local session identifier, and one or more TCs 101A-N. Begins with a session request that includes media performance (eg, MIME type), session subject, and session type.

 The multimedia conference session may be a video conference session, an audio conference session, and an audio and video conference session. The TS 106 includes a request processing module 110 that processes a session request (eg, a start session request, a global modification session request, a join session request, and a local media update request) received from one of the TCPs 102A-N. The TS 106 also includes a session setting module 108 for setting a multimedia conference session between one or more TCs 101A-N and one or more WAN devices 116A-N based on the session request.

 The TS 106 further comprises a multimedia data processing module that enables a multimedia conference between the TC 101A-N and the WAN devices 116A-N based on the media performance of one or more TCs 101A-N. . The message processing module 112 also allows the TCPs 102A-N to subscribe to dynamic session information associated with an ongoing multimedia conference session using the GENA (General Event Notification Architecture) protocol.

 For example, the dynamic session information includes user information for leaving a session, user information for participating in the session, a change to a multimedia conference session, and the like. When TCP 102A subscribes, the TS 106 provides dynamic session information associated with the ongoing multimedia conference session as a notification to the TCP 102A. The TCP 102A provides the dynamic session information to one or more associated TCs 101A-N. The TS 106 also includes a conference server module 113 that manages multimedia conference sessions on the TS 106 in the absence of an external conference server associated with one or more WAN devices 116A-N. The operation of the UPnP telephony-based home network system 100 will be described in more detail with reference to FIGS.

FIG. 2 is a step flowchart (200) illustrating a preferred method of multimedia conference between the TC 101A and the WAN devices 116A-N in the UPnP telephony based home network system 100 according to an embodiment of the present invention. At step 202, a session request for starting a multimedia conference session is generated by TCP 102A. The session request includes a list of WAN devices, a conference group identifier associated with the WAN devices 116A-N, a local session identifier, the media performance of the TC 101A, and session information (eg, subject). In a preferred embodiment, the session request includes a list of WAN devices for an ad hoc type multimedia conference session. In another embodiment, the session request includes a conference group identifier associated with the WAN device in the case of a pre-promised multimedia conference session. A preferred schema for initiating a pre-promised multimedia conference session using a conference group already defined in the TS 106 address book is illustrated in APPENDIX “A”. Media negotiation is performed in a manner similar to that defined in the UPnP telephony call management standard. In addition, the TC101A media performance in the session request is used during the media negotiation period.

In step 204, the session request is transferred to the TS 106 by the TCP 102A. In step 206, the session request is received from the TCP 102A to the TS 106. In step 208, the received session request is processed and a list of WAN devices or conference group identifiers associated with the WAN devices 116A-N, local session identifiers, media performance of the TC 101A, and session information (eg, subject matter). Is extracted from the received session request by the TS.

In step 210, it is determined whether the session request is associated with a multimedia conference session based on the session information. If the session identifier represents “individual”, it is determined that the session request is not associated with a multimedia conference session. In such a case, step (200) ends. On the other hand, if the session identifier in the session request is “group”, it is determined that the session request is related to the multimedia conference session. In such a case, in step 212, the TS 106 generates a conference start request for setting up a multimedia conference session between the TC 101A and the WAN devices 116A-N. For example, the conference start request may include a global session identifier, conference link (eg, agenda), TC 101A media performance, session subject, and the like.

In step 214, the conference start request requested in the session request is transferred by the TS 106 to each of the WAN devices 116A-N. As described above, when the WAN device has an external conference server, the TS forwards the conference start request to the external conference server, and the conference link (for example, the agenda), the media performance of the TC 101A, and the fixed subject such as the session subject. Information is updated on the external conference server. A preferred schema of fixed information for the OMA standard is illustrated in APPENDIX “B”. Otherwise, when the TS 106 starts a multimedia conference session on the conference server module 113, the conference start request is immediately transferred to the WAN device. In step 216, a confirmation message is received from each of the WAN devices 116A-N in response to the conference start request. At step 218, a confirmation message associated with the successful setup of the multimedia conference session is processed, and TS 106 informs TCP 102A through the processed confirmation message.

At step 220, multimedia data received from one or more WAN devices 116A-N based on media capabilities negotiated during the multimedia conference session is provided to TC 101A. In one embodiment, the multimedia data is provided to be output in a format compatible with TC101. Alternatively, the multimedia data received from the TC 101A is provided to one or more WAN devices 116A-N. The step (200) also allows the TCP 102A to modify, join, or locally update a multimedia conference session in progress on the WAN devices 116A-N, which is illustrated in FIGS. 5 will be described in more detail. Also, the described step (200) may provide dynamic information to the TCP 102A during the ongoing multimedia conference session.

FIG. 3 illustrates a preferred method by which a telephony control point (TCP) 102A according to one embodiment of the present invention adds or removes at least one WAN device from an ongoing multimedia conference session. It is a flowchart (300). At step 302, a global modification session request is generated by TCP 102A during an ongoing multimedia conference session between TCP 102A and WAN devices 116A-N. The global modification session request selectively includes new subject information and new media capabilities of a new TC 101A, and is added to or removed from the multimedia conference session. including.

In step 304, the TS 106 extracts information from the received global modification session request. In step 306, the TS 102 can exchange corrected session information with the WAN devices 116 </ b> A-N over the WAN 114. At step 308, at least one WAN device is added to or removed from the ongoing multimedia conference session based on the global modification session request. At step 310, the TCP 102A and other active WAN devices of the ongoing multimedia conference session become aware of at least one WAN device that has been added to or removed from the ongoing multimedia conference session. Steps 304 to 310 are performed by the TS 106. In the same manner, the TCP 102A can update the information between the ongoing multimedia conference sessions (eg, status, subject, conference schedule information, media performance, etc.).

FIG. 4 is a step flow diagram (400) illustrating a preferred method for providing media content during an ongoing multimedia conference session based on local media performance information associated with a TC according to one embodiment of the present invention. At step 402, a local media update request is generated by TCP 102A during a multimedia conference session in progress. The local media request is generated when the TCP 102 wants to locally update the media performance in the UPnP telephony-based home network system 100. The TCP 102A transfers the local media update request to the TS 106. The local media update request includes a local session identifier, TC 101B local media performance information, and information related to the TC 101B. The local media request includes information related to the TC 101B as a request to convert the multimedia information session in which the TCP 102A is in progress from the TC 101A to the TC 102B.

In step 404, local media performance information is extracted from the local media update request received by the TS 106. The local media performance information represents the media performance of the TC 101B for receiving media content during the ongoing multimedia conference session. In step 406, the local media performance of the TC 101B is determined based on the extracted local media performance information. At step 408, the local media performance is updated in the TS 106 memory. In step 410, the TCP 102A becomes aware of a successful local media performance update through the TS 106, and the TC 101B is updated with the updated local media performance information through the TCP 102A.

In step 412, the ongoing multimedia conference session is updated, and the updated media content is provided to TS 106 during the ongoing multimedia conference message session based on the local media capability information. In step 414, the dynamic information received from the TS 106 is processed, but since the TC 101B cannot receive and display the dynamic information from the TS 106, the dynamic information is transmitted to the TC 101B by the TCP 102A. In this manner, the above method provides a 3 box model in the UPnP telephony-based home network system 100. Alternatively, the TCP 102A transfers a local update request for updating the new local media performance of the TC 101A, and the TS 106 provides media content to the TC 101A based on the new local media performance in the local media update request. be able to. For example, if the new local media performance indicates that the TC 101A wants to receive video content that is not audio content, the TS 106 blocks the audio and provides only the video content to the TC 101A.

FIG. 5 is a step flow diagram (500) illustrating a preferred method of joining an ongoing multimedia conference session with a WAN device according to an embodiment of the present invention. In step 502, a join session request to join an ongoing multimedia conference session is generated by the TCP 102A. For example, the TCP 102A can generate the participation session request when the battery of the mobile phone runs out or the signal to the TS 106 is lost. In step 504, the session identifier is extracted from the participation session request received by the TS.

In step 506, it is determined whether the extracted session identifier is matched with a session identifier associated with an ongoing multimedia conference session. If matched, at step 508, the TS 106 participates in an ongoing multimedia conference session. In step 510, the TCP 102A is allowed to participate in the ongoing conference session based on the join session request. If not matched, the participation session request is terminated in step 512.

In one embodiment, the non-transitory computer-readable recording medium is one of TCP (eg, television, personal computer) and / or TS102 (eg, mobile phone, PDA, etc.). When executed by one, one of the TCP and TS 106 has instructions for performing the method of FIGS.

FIG. 6 illustrates an example of a computing system environment (600) suitable for implementing embodiments of the invention. FIG. 6 and the following description are intended to provide a concise and general description of a suitable computing system environment (600) in which embodiments of the subject matter included herein may be implemented.

 A typical computing device 601 such as TCP 102 A and TS 106 may include a processor 602, a memory 604, a mobile storage device 606, and a non-mobile storage device 608. The computing device 601 additionally includes a bus 610 and a network interface 612. The computing device 601 includes a computing environment (600) comprising one or more user input devices 614, one or more output devices 616, and one or more communication connections 618, such as a network interface card or a general purpose serial bus connection. Or can be connected to such a computing environment (600). The one or more user input devices 614 may be a keyboard, a mouse, or the like. The one or more output devices 616 may be TS 106 and TCP 102A displays. The communication connection 618 may include a UPnP telephony based home network.

 The memory 604 may include a volatile memory 620 and a nonvolatile memory 622. Various computer readable recording media are stored in memory elements of a computing device 601 such as the volatile memory 620 and non-volatile memory 622, the mobile storage device 606, and the non-mobile storage device 608. You can connect from. The computer memory element is suitable for storing data and machine-readable instructions Read Only Memory (ROM), Random Access Memory (RAM), Erasable Programmable Read (Erasable Programmable Read) Only Memory (EPROM), Electrically Erasable Programmable Read Only Memory (EEPROM) Moving to handle hard drives, compact discs, digital video discs, diskettes, magnetic tape cartridges, memory cards, Memory Stick TM, etc. Memory devices such as type media drives can be included.

 The processor 602 used in the present invention includes a microprocessor, a microcontroller, a complex instruction set computing microprocessor, a reduced instruction set computing microprocessor. ), Very long instruction word microprocessor, explicitly parallel instruction computing microprocessor, graphic processor, digital signal processor, Or any type of computing circuit, such as, but not limited to, other forms of processing circuitry. In addition, the processor 602 may include general or programmable logic devices or arrays, application specific integrated circuits, single-chip computers, smart cards (smart embedded controllers such as cards) can be included.

 Embodiments of the present invention can be implemented with program modules that perform functions including functions, procedures, data structures, and application programs, or that define abstract data types or lower-level hardware contexts. The machine-readable instructions stored in the recording medium described above can be executed by the processor 602 of the computing device 601. For example, the computer program 624 can include machine readable instructions that allow for a multimedia conference between a UPnP capable telephony device and a WAN device according to an embodiment of the present invention. In one embodiment, the computer program 624 can be included in a compact disk-read only memory (CD-ROM), and the nonvolatile memory 622 loads the CD-ROM to the hard drive. it can. The machine readable instructions may enable the computing device 601 to be encoded according to various embodiments of the invention.

 As described above, the present invention can provide an efficient multimedia conference between a UPnP telephony device and a WAN device.

 The various embodiments described herein are not the same embodiment, but can be grouped with other various embodiments not explicitly described herein. In addition, various operations, processes, and methods of the present invention can be implemented in a machine-readable medium and / or machine-connectable medium that is compatible with a data processing system (eg, a computer system) (eg, Including the use of means for performing various actions). Accordingly, the specification and drawings of the present invention should be regarded as illustrative of the invention rather than limiting of the invention.

APPENDIX 'A'
<? xml version = "1.0" encoding = "utf-8"?>
<peerList: peerList
xsi: schemaLocation = "urn: schemas-upnp-org: phone: peer
http://www.upnp.org/schemas/phone/peer-v1.xsd "
xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance"
xmlns: peer = "urn: schemas-upnp-org: phone: peer">
<peer: Peer>
<peer: id>
The identifier of the Peer (eg, phone number, etc.)
</ peer: id>
<peer: name> A user friendly name for the Peer </ peer: name>
<peer: contactInstanceId>
The instance identifier for a contact referred by the Peer
</ peer: contactInstanceId>
<peer: groupInstanceId>
The instance identifier for a group referred by the Peer
</ peer: groupInstanceId>
</ peer: peer>
</ peerList: peerList><?

APPENDIX 'B'
<? xml version = "1.0" encoding = "UTF-8"?>
<StaticConferenceInfo xmlns = "urn: schemas-upnp-org: phone: messaging"
xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance"
xsi: schemaLocation = "urn: schemas-upnp-org: phone: messaging
http://www.upnp.org/schemas/phone/messaging-v1.xsd ">
<Conference_Call_Information>
<ConferenceSessionID> 1234 </ ConferenceSessionID>
<ConferenceType> ad-hoc </ conferencetype>
<ConferenceSubject> UPnP-Messaging Spec Review </ ConferenceSubject>
...
...
</ Conference_Call_Information>
</ StaticConferenceInfo>

100 UPnP telephony-based home network system 101A TX
102A TCP
104 multimedia management module 106 telephony server 108 session setting module 110 request processing module 112 multimedia processing module 113 conference server module 114 WAN
116A WAB equipment

Claims (26)

A multimedia conferencing method between a device including a client and a plurality of wide area network (WAN) devices in a server,
Receiving a session request associated with a multimedia conference session with a plurality of WAN devices;
The look-containing and setting the multimedia conference session between the at least one control point and the first client associated plurality of WAN devices, the based on the session request,
Setting up the multimedia conference session comprises:
Extracting a local session identifier, a list of WAN devices or a conference group identifier associated with the one or more WAN devices, media performance of the first client, and session information from the received session request;
A multi that includes a global session identifier for setting up the multimedia conference session between the first client and the plurality of WAN devices in the plurality of WAN devices, media performance of the first client, and a session subject. Communicating a media conference start request,
The local session identifier is information identifying a multimedia conference session between the server and the first client;
The global session identifier is information for identifying the multimedia conference session in the WAN device . Establishing the multimedia conference session between the first client associated with the at least one control point and the plurality of WAN devices comprises:
Initiating the multimedia conference session with the plurality of WAN devices using a WAN in response to the session request;
The method according to claim 1, characterized in that it comprises the steps of: providing a multimedia data to said first client and said plurality of WAN devices based on the media performance of the first client. Initiating the multimedia conference session with the plurality of WAN devices using the WAN according to the session request comprises :
A step of the session request to determine whether associated with the multimedia conference session based on the previous SL session information,
If relevant if the steps of transmitting the multimedia conference start request to each of the plurality of WAN devices in the list of the WAN device,
3. The method of claim 2 , comprising terminating the multimedia conference session with the plurality of WAN devices if they are not associated. Transmitting the multimedia conference start request to each of the plurality of WAN devices in the list of the plurality of WAN devices;
Generating the multimedia conference start request including the global session identifier, the media capabilities of the first client, and the session subject;
And forwarding the generated multimedia conference start request through the WAN to each of the plurality of WAN devices based on the list of WAN devices or to the conference group identifier. 3. The method according to 3 . Transferring the generated multimedia conference start request;
Receiving confirmation messages from the plurality of WAN devices in response to the multimedia conference start request;
Processing the confirmation message associated with a successful setup of the multimedia conference session;
5. The method of claim 4 , comprising informing the at least one control point through the processed confirmation message associated with a successful setup of the multimedia conference session. Setting up the multimedia conference session between the first client and the plurality of WAN devices;
The method of claim 5 , wherein the multimedia conference session is selected from the group consisting of a video conference session, an audio conference session, and an audio and video conference session. Setting up the multimedia conference session between the first client and the plurality of WAN devices comprises:
Receiving multimedia data from the plurality of WAN devices;
During the multimedia conference session, the multimedia data is processed based on the media performance of the first client so that the multimedia data is output in a format compatible with the first client. 7. The method of claim 6 , comprising communicating to one client. Further comprising extracting information from a global modification session request received from the at least one control point;
Extracting information from the global modification session request received from the at least one control point;
Communicating modified session information to the plurality of WAN devices;
A step of adding at least one WAN device, or removed by the multimedia conference session proceeds in rows on the basis of said global fix session request,
New in the multimedia conferencing session in progress, or to at least one of the WAN device is removed, further comprising the steps of: informing the at least one other active WAN device control point and the multimedia conference session The method according to claim 1. Extracting the session identifier information from the participants session request received from the server at least one control point,
And determining whether the extracted session identifier is the multimedia conference session associated session identifier and matching in progress,
If it is matched, joining the ongoing multimedia conference session;
If matched, allowing a first client associated with the at least one control point to participate in the ongoing multimedia conference session based on the join session request;
The method of claim 1, further comprising the step of terminating the participation session request received from the at least one control point if not matched. Setting up the multimedia conference session between the first client and the plurality of WAN devices comprises:
Providing the at least one control point with dynamic session information, including user withdrawal session information, user participation session information, and subject change of the multimedia conference session, associated with ongoing multimedia conference information. The method of claim 1, wherein:   The method further comprises: updating the global session information associated with the multimedia conference session when one of the at least one control point or the WAN device is in progress when the multimedia conference session is in progress. Item 2. The method according to Item 1. Extracting information from the at least one B over local media update request received from the control point,
Determining a local media capability of a second client associated with the at least one control point based on the local media update request;
Updating local media performance information in memory associated with the server;
The method of claim 1, further comprising the steps of: providing a media content to the multimedia conference session period to the second client in progress on the basis of the updated local media capability information. Extracting information from the at least one B over local media update request received from the control point,
Determining local media capabilities of the first client based on the local media update request;
Updating local media performance information in memory associated with the server;
A step of interrupting the media content associated with the multimedia conference session in progress on the basis of the local media capability information has been updated by the control point,
The method of claim 1, further comprising: providing media content associated with the ongoing multimedia conference session to the first client based on the updated local media capability information. Method. A server,
The server receives a session request associated with a multimedia conference session with a plurality of WAN devices, and between the first client and the plurality of WAN devices associated with at least one control point based on the session request. Set up the multimedia conferencing session of
The server setting up the multimedia conference session includes:
Extracting a local session identifier, a list of WAN devices or a conference group identifier associated with the one or more WAN devices, media performance of the first client, and session information from the received session request;
A multi that includes a global session identifier for setting up the multimedia conference session between the first client and the plurality of WAN devices in the plurality of WAN devices, media performance of the first client, and a session subject. Including communicating media conference start requests,
The local session identifier is information that identifies the multimedia conference session between the server and the first client;
The global session identifier is information for identifying the multimedia conference session in the WAN device . The server initiates the multimedia conference session with the plurality of WAN devices based on the session request using a WAN, and includes the one or more clients based on media performance of one or more clients. Setting up the multimedia conference session between one of the one or more clients and the plurality of WAN devices by providing multimedia conference data to one and the plurality of WAN devices. The server according to claim 14 , characterized in that: The server, the session request is determined whether associated with the multimedia conference session based on the previous SL session information, and generates the multimedia conference start request, a list of the plurality of WAN devices or the The server according to claim 15 , wherein the server transmits to each of the plurality of WAN devices based on a conference group identifier associated with the plurality of WAN devices. The server receives a confirmation message from the plurality of WAN devices in response to the multimedia conference start request in the transmission of the multimedia conference start request, and relates to the successful setting of the multimedia conference session. The server of claim 16 , wherein after processing a confirmation message, the at least one control point is informed through the processed confirmation message associated with a successful setup of the multimedia conference session. The server of claim 17 , wherein the multimedia conference session is selected from the group consisting of a video conference session, an audio conference session, and an audio and video conference session. And one of the one or more clients, the time to set the multimedia conference session, wherein the server, multi-media from the plurality of WAN devices multimedia conferencing session duration between said plurality of WAN devices Receiving the data and outputting the multimedia data in a format compatible with the one or more clients based on the media performance of the one or more clients during the multimedia conference session. The server of claim 18 , wherein after processing data, the data is transmitted to one of the one or more clients. The server receives a global modification session request from the at least one control point during an ongoing multimedia conference session between one of the one or more clients and the plurality of WAN devices; Extracting information from the global modification session request received from one control point, communicating modification session information to the plurality of WAN devices, and at least in an ongoing multimedia conference session based on the global modification session request; Add or remove one WAN device, and at least one control point for the at least one WAN device added or removed in the ongoing multimedia conference session and other active of the multimedia conference session WAN device News, the
The global modification session request includes subject information, media performance of one or more of the one or more clients, and at least one WAN device that is added to or removed from the multimedia conference session. The server according to claim 14 . The server, the received participation session request from the at least one control point, the extracted session identifier information from said participation session request received from the at least one control point, the session identifier of the extracted information is progress the multimedia conference session and determines whether the matched session identifier information associated in, if once matched, participate in a multimedia conferencing session in the progress, on the basis of the said participant session request Allow one of the one or more clients to participate in the ongoing multimedia conference session, and if not matched, terminate the participation session request received from the at least one control point. As described in claim 14 , Server. Wherein the server, the dynamic session information associated with the multimedia conference information in progress provided to the at least one control point,
The server according to claim 14 , wherein the dynamic session information includes user withdrawal session information, user participation session information, and subject change of the multimedia conference session. The server extracts local media performance information from a local media update request received from the at least one control point, and the one or more clients associated with the at least one control point based on the local media update request. one determines the local media performance, the updated local media capability information, multimedia conference sessions in progress on the basis of the updated local media capability information in the memory associated with the server of, the other The server of claim 14 , wherein the server provides media content to another one of the one or more clients during a period. The server of claim 23 , wherein the other one of the one or more clients is updated by the at least one control point with respect to the updated local media performance information. The server extracts the at least one control point or Lalo over local media update request to the multimedia conference session duration in progress and on the basis of the local media update request associated with said at least one control point of the determining one local media performance of the one or more clients, the update the filtrate over local media capability information in the memory associated with the server, the multimedia conferencing the ongoing based on the updated local media capability information Block media content unrelated to the local media capability during a session period and configure one of the one or more clients during the ongoing multimedia conference session based on the updated local media capability information. The server of claim 19, wherein the providing media content to. The server of claim 22 , wherein the dynamic session information includes user withdrawal session information, user participation session information, and subject change of the multimedia conference session.

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