CN1642096A - Multimedia conference convening method - Google Patents
Multimedia conference convening method Download PDFInfo
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- CN1642096A CN1642096A CN 200410000501 CN200410000501A CN1642096A CN 1642096 A CN1642096 A CN 1642096A CN 200410000501 CN200410000501 CN 200410000501 CN 200410000501 A CN200410000501 A CN 200410000501A CN 1642096 A CN1642096 A CN 1642096A
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Abstract
The invention provides a multimedia meeting holding method, including a meeting-requesting step: as preparing holding a meeting, selecting a terminal from many terminals as an initiating terminal; transmitting the meeting-holding request by the initiating terminal through a network guard to a meeting management unit; and a meeting establishing step: the meeting management unit judges if the current network resources can support the meeting: if yes, the meeting management unit establishes the meeting and according to the meeting-holding request information, it sets holding attribute of the meeting, and then holding the meeting; otherwise the meeting management refuses to hold the request; as well as a meeting holding step: the meeting management unit controls multipoint control unit to hold the meeting. The invention solves the defects in overhigh load of the network guard and being uneasy and unable to implement the meeting-appointing function.
Description
Technical field
The present invention relates to the multimedia communication technology field, method is held in particularly a kind of meeting.
Background technology
Along with the fast development of data communication technology, the needs of broadband services sharply rise, make multimedia communication application more and more widely.Multimedia conference system is exactly to be based upon on the basis of data communication, utilize existing data communication network to carry out both can transmitting realtime graphic information, the communication system of transmitting voice information simultaneously again, and then utilize the local terminal to provide visual multimedia conferencing for people in the different location; Simultaneously, this a plurality of not terminal in same place can be linked into the data communication service that the mode of carrying out mutual audio frequency, video communication in the data communication network has also promoted high speed development simultaneously.
Present multimedia conference system can support the multiple spot access to carry out audio frequency, video communication simultaneously, and referring to Fig. 1, this figure is the structural topology figure of existing multimedia conference system.Multimedia conference system shown in Figure 1 comprises: can provide unidirectional or bidirectional real-time and can support voice communication and a plurality of terminals (Terminal) 10 of video communication, control the multipoint control unit (MCU that carries out audio frequency, video communication between each terminal 10, Multipoint Control Unit) 20 and control hold the Service Management Center (SMC of process with the whole meeting of management, Service Manage Center) 30, wherein carry out multimedia communication by all kinds of wide/narrow band data communication networks 40 between terminal 10 and the MCU 20; Simultaneously multimedia conference system also comprises: be used for execute protection data communication network 40 integralities, audio frequency, video data stream carried out the gatekeeper (GK of address transition, access control and Bandwidth Management; GateKeeper) 60 and be used to realize the gateway (GW, GateWay) 50 that intercom mutually between the terminal of different agreement.
In the prior art, the user holds multimedia conferencing in advance one time, at first to adopt the administrative staff of communication modes such as phone, fax or online and Service Management Center SMC 30 sides to get in touch by the user, the user will hold solicited message and send to SMC 30 then, can allow/refuse holding of this time meeting by the administrative staff of SMC 30 sides with situation according to present Internet resources.Wherein above-mentionedly hold solicited message and mainly comprise: the meeting title that hold a meeting, meeting password, can information such as field information, meeting transmission rate and maximum meeting-place number.
In the prior art, mainly contain three kinds of modes and be used for holding of multimedia conferencing, specific as follows:
Prior art one is with reference to Fig. 2, and this figure is the method that available technology adopting Web mode is held multimedia conferencing; The main implementation procedure that employing Web mode is held multimedia conferencing is as follows:
The user visits the server of SMC 30 by PC browser (IE, Internet Explorer) 80, and sets up the network connection between the server of SMC 30;
Network by above-mentioned foundation connects, and the user will hold solicited message and send to SMC 30;
The solicited message of holding that receives is analyzed in conference management unit 70 among the SMC 30, and determines whether holding this time meeting according to the available situation of present Internet resources; If can hold this time meeting, then at meeting start time, notice MCU 20 holds a meeting;
MCU 20 calling terminals 10 are joined or are called out MCU 20 by terminal 10 and require affiliation.
The deficiency that prior art one exists in realization is: the user must visit the server of SMC 30 by the Web mode, correspondingly also just requires the user will have a communication terminal that can land Internet, therefore makes the user exist inconvenience in operation; Also increased simultaneously the cost expense of multimedia meeting holding.
Prior art two is with reference to Fig. 3, and this figure is that terminal and multipoint control unit are set up the method that multimedia conferencing is held in temporary meeting in the prior art; Its main implementation procedure is as follows:
At first between the terminal 10 that participates in a conference a selected terminal as initiating terminal 90, this initiations terminal 90 be mainly used in and MCU 20 between set up an interim connection, hold a temporary meeting;
After initiating to set up interim the connection between terminal 90 and the MCU 20, will hold solicited message by initiation terminal 90 and send MCU 20 to by the connection of having set up;
The solicited message of holding that MCU 20 will receive is forwarded to SMC 30;
The solicited message of holding that receives is analyzed in conference management unit 70 among the SMC 30, and determines whether holding this time meeting according to the available situation of present Internet resources; If can hold this time meeting, then at meeting start time, notice MCU 20 holds a meeting;
MCU 20 calling terminals 10 are joined or are called out MCU 20 by terminal 10 and require affiliation.
Prior art two has the following disadvantages in realization:
Before meeting is formally held, need set up temporary meeting initiating to set up interim connection between terminal 90 and the MCU 20, after holding, official meeting switching to the official meeting from temporary meeting, and its technology realizes comparatively complicated;
After the interim connection foundation of initiating between terminal 90 and the MCU 20, if because the Internet resources availability is low etc. former thereby when causing meeting not hold, the transmission line resource that the user still needs interim connection is taken is paid, so very uneconomical for the user.
Prior art three is with reference to Fig. 4, and this figure is that terminal and multipoint control unit are set up the method that multimedia conferencing is held in temporary meeting by the gatekeeper in the prior art; Its main implementation procedure is as follows:
At first terminal 90 is initiated in a selected terminal 10 conducts between the terminal 10 that participates in a conference;
With hold solicited message be encapsulated in by initiate terminal 90 to the gatekeeper the 60 access request messages of initiating (ARQ, AdmissionRequest) in, hold the information of a meeting to inform gatekeeper's 60 requests, and inform the concrete terminal that will participate in;
After gatekeeper 60 received request message, request MCU 20 created a multimedia conferencing;
After MCU 20 creates the meeting success, 60 send the information of registering this multimedia conferencing to the gatekeeper;
After gatekeeper 60 receives the log-on message of meeting, to initiate terminal 90 respond insert ACK packets (ACF, AdmissionConfirm);
Then, initiate terminal 90 and call out MCU 20, request joins in the multimedia conferencing of establishment, and meeting formally begins then;
At last, MCU 20 calls out other terminal 10 affiliation, all terminals that participate in a conference 10 is just all joined in this meeting participate in a conference.
The deficiency that prior art three exists is:
The gatekeeper needs directly control MCU 20, when there is a plurality of MCU 20 in multimedia conference system, can make gatekeeper's live load overweight, is difficult for expanding;
MCU 20 to the gatekeeper 60 send the log-on message of meetings after, gatekeeper's 60 feedback ACF message are given and are initiated terminal 90, initiating terminal 90 must make a call immediately according to the normal call flow process, therefore cause MCU 20 to hold a meeting immediately, so can not realize the function of preset conference, therefore make the user to use very inconvenient.
Summary of the invention
The present invention proposes a kind of multimedia meeting holding method, and is overweight to solve the request of being initiated by terminal in prior art gatekeeper's the live load of holding a meeting in the mode, is difficult for expansion and can not realizes the defective of preset conference function.
For this reason, the present invention proposes a kind of multimedia meeting holding method, be used for the multimedia conference system meeting and hold the processing of process, described multimedia conference system comprises a plurality of terminals, gatekeeper, multipoint control unit and conference management unit, it is characterized in that comprising:
The request for conference step:
When (10) preparing to hold a meeting, a selected terminal is as initiating terminal in described a plurality of terminals;
(11) by initiating terminal the solicited message of holding of this meeting is passed through the gatekeeper and is transmitted to the conference management unit;
The conference creation step:
(20) whether conference management unit judges current network resources can support this meeting; If then this meeting is created in the conference management unit, and according to hold solicited message to this meeting hold attribute setting, change of team view is then held step; If not, then the conference management unit is refused this meeting and is held request;
Step is held in meeting:
(30) hold this meeting by the conference management unit controls multipoint control unit.
Wherein further comprise in the step (20): when being, information is passed through in the request of generation in judged result in the conference management unit; For not the time, information is not passed through in the request that then generates in judged result.
Judged result also comprises after being in the step (20): the conference management unit passes through in the information for the meeting another name of this this time of meeting allocation identification meeting, the described meeting another name request of being encapsulated in.
Step (20) also comprises afterwards:
(21) the conference management unit will ask not feed back to the initiation terminal by information by the gatekeeper by information or request.
(22) initiate terminal and pass through to parse in the information meeting another name of this meeting, and utilize described meeting another name that various management are carried out in this time meeting in the request that receives.
Wherein step (22) also comprises afterwards:
(23) initiate terminal the meeting another name that parses is notified to other-end, each terminal of notified meeting another name is passed through this meeting another name various management is carried out in this time meeting.
The initiation terminal is encapsulated in the solicited message of holding of this meeting in the access request message field in the above-mentioned steps (11), is transmitted to the conference management unit by the gatekeeper; The conference management unit will ask not to be encapsulated in the access acknowledgement message field by information by information or request in the step (21), feed back to the initiation terminal by the gatekeeper; Described access request message field and the criteria field that inserts in registration, management and the status message that the acknowledgement message field is a realization multimedia conferencing message transmission.
Wherein the middle initiation of step (11) terminal is encapsulated in the solicited message of holding of this meeting in the nonstandard data field that inserts the request message field; The conference management unit will ask not to be encapsulated in the nonstandard data field that inserts the acknowledgement message field by information by information or request in the step (21); Described nonstandard data field is the criteria field that inserts in request message field and the access acknowledgement message field.
The initiation terminal is encapsulated in the solicited message of holding of this meeting in registration, management and the status message in the above-mentioned steps (11), is transmitted to the conference management unit by the gatekeeper; The conference management unit will ask not to be encapsulated in registration, management and the status message by information by information or request in the step (21), feed back to the initiation terminal by the gatekeeper; Described registration, management and status message are the standard message that realizes the multimedia conferencing message transmission.
Wherein the request of holding in solicited message and the step (21) in the step (11) is not encapsulated in the nonstandard message field of registration, management and status message by information by information or request, described nonstandard message field is the criteria field in registration, management and the status message.
Beneficial effect of the present invention is as follows:
Multimedia meeting holding method of the present invention is created meeting by the conference management unit according to the solicited message of holding of initiating terminal, the a plurality of MCU of the unified control in conference management unit hold a meeting then, so when having a plurality of MCU in the multimedia conference system, do not need directly each MCU to be controlled by the gatekeeper, institute is not so that the gatekeeper can cause live load overweight owing to the MCU number increases, and autgmentability is better;
Create meeting by the solicited message of holding that the conference management unit is sent according to the initiation terminal, the meeting of this establishment can be held immediately by conference management unit controls MCU, also can preengage, when the time started is held in the arrival meeting, hold a meeting by conference management unit controls MCU again, therefore expanded the mode of holding of meeting, convenient for users to use;
The conference management unit can distribute the meeting another name for this meeting after creating the meeting success, terminal can be passed through this meeting another name as this meeting index sign, and various management are carried out in this meeting, and it is comparatively convenient that the user is operated.
Description of drawings
Fig. 1 is the structural topology figure of existing multimedia conference system;
Fig. 2 is the method that available technology adopting Web mode is held multimedia conferencing;
Fig. 3 is that terminal and multipoint control unit are set up the method that multimedia conferencing is held in temporary meeting in the prior art;
Fig. 4 is that terminal and multipoint control unit are set up the method that multimedia conferencing is held in temporary meeting by the gatekeeper in the prior art;
Fig. 5 is the realization theory diagram of multimedia meeting holding method of the present invention;
Fig. 6 is the implementation procedure figure of multimedia meeting holding method of the present invention;
Fig. 7 is the detailed process figure of multimedia meeting holding method cancellation of meeting operation of the present invention.
Embodiment
The design aim of multimedia meeting holding method of the present invention is: initiating to hold on the basis of solicited message with terminal, after solicited message carries out authentication to holding of sending of terminal by the gatekeeper, be transmitted to the conference management unit, can utilize situation by the conference management unit according to current network resources, hold the attribute of holding that solicited message is provided with this meeting at this; Arrive then meeting hold the time time, MCU holds this meeting by the conference management unit controls, hold a meeting thereby make by a plurality of MCU of conference management unit controls, and the gatekeeper only is responsible for the solicited message of holding of terminal is transmitted to the conference management unit, and the request results information of transmitting conference management unit feedback is given terminal, and need not directly control a plurality of MCU, thereby alleviated gatekeeper's live load.Simultaneously by the conference management unit meeting is set, the user can require meeting to hold in the time of oneself selecting, thus can realize the reservation function of meeting, user-friendly.Below in conjunction with specific embodiment multimedia meeting holding method of the present invention is elaborated.
With reference to Fig. 5 and Fig. 6, wherein Fig. 5 is the realization theory diagram of multimedia meeting holding method of the present invention; Fig. 6 is the implementation procedure figure of multimedia meeting holding method of the present invention.The implementation procedure of multimedia meeting holding method of the present invention is described in detail in detail in conjunction with the accompanying drawings, below:
When the user wants to hold a meeting, at first between a plurality of terminals 10 of multimedia conference system, choose a terminal as initiating terminal 90, wherein this initiation terminal 90 can be chosen arbitrarily, can selection operation terminal 10 conducts the most easily initiate terminals 90 as the user;
Step S1, the solicited message of holding that the user holds this meeting with request is input in the initiation terminal 90, initiate terminal 90 solicited message of holding of user's input is sent to gatekeeper 60 in the multimedia conference system, the solicited message of holding that 60 pairs of initiations of gatekeeper terminal 90 is sent is carried out authentication, judge promptly that this initiation terminal 90 sends whether hold solicited message legal, if authentication is passed through, then execution in step S2; If authentication is not passed through, show that then this holds solicited message is illegal, gatekeeper 60 can not hold solicited message to this again and carry out any processing, ends in failure with the request of holding that identifies this time meeting; Wherein initiate the hold time of holding, meeting title, meeting password, each terminal information of participant, the meeting that comprise this time meeting in the solicited message of terminal 90 transmissions and hold information such as speed and participant terminal number.
Step S2, the solicited message of holding that gatekeeper 60 will receive is transmitted to conference management unit 70, wherein conference management unit 70 is an independently logic entity in multimedia conference system, concrete condition and device fabrication situation according to networking, can place Service Management Center SMC 30, also multipoint control unit MCU 20 can be placed, gatekeeper GK 60 can certainly be placed.
Can not support holding of this time meeting if current network resources is judged in conference management unit 70, then can generate a request, to identify the request of the holding failure of this time meeting not by information.
Step S3, conference management unit 70 will pass through in the information for the meeting another name request of being encapsulated in that this meeting distributes, then conference management unit 70 request that will generate by information or request by feedback information to gatekeeper 60;
Step S4, gatekeeper 60 and then the request that will receive are not given by feedback information by information or request and are initiated terminal 90;
The user passes through information or request by the request of initiating terminal 90 and receiving and does not pass through information and learn that this time meeting holds whether success of request, if feed back to the request of initiating on the terminal 90 when passing through to comprise the meeting another name of this meeting in the information, initiation terminal 90 can be passed through to parse in the information this meeting another name in request and be notified to the user, so that passing through this meeting another name process of holding to this meeting in subsequent process, the user inquires about, operations such as modification and cancellation, initiate terminal 90 and also can and then this meeting another name be notified to other-end, the terminal that receives this meeting another name can be utilized the index sign of this meeting another name as this meeting, visit conference management unit 70, to require to join or withdraw from this conference system, also can carry out various bookkeepings simultaneously to this meeting.
Step S5, arrive this meeting hold the time time, conference management unit 70 can begin to hold this meeting by control multipoint control unit MCU 20, and the information of each terminal 10 of the participant that will be provided with sends to MCU 20;
Normally hold in the process in follow-up meeting, the user can utilize the meeting another name of learning that various bookkeepings are carried out in this meeting, and wherein various bookkeepings mainly comprise:
Terminal 10 (comprise and initiate terminal 90) can be used the index sign of this meeting another name as this meeting, visit conference management unit 70, the process of holding to this meeting is inquired about, and how long has held as inquiring about this meeting, information such as how long finishes in addition;
Terminal 10 (comprise and initiate terminal 90) also can be used the index sign of this meeting another name as this meeting, makes amendment to the attribute of holding of this meeting in visit conference management unit 70; As revising the terminal number of participating in this meeting, attribute informations such as meeting adjourned time;
Terminal 10 (comprise and initiate terminal 90) can also be used the index sign of this meeting another name as this meeting, and operation is cancelled to this meeting in visit conference management unit 70, promptly because other reasons finishes this meeting in advance.
Be operating as example with cancellation of meeting below, in multimedia meeting holding method of the present invention, the operating process that initiation terminal 90 utilizes the meeting another name to carry out cancellation of meeting is elaborated.With reference to Fig. 7, this figure is the detailed process figure of multimedia meeting holding method cancellation of meeting operation of the present invention; The specific operation process of its cancellation of meeting is as follows:
Step S10, initiation terminal 90 sends to the cancellation of meeting request of this meeting among the gatekeeper 60;
Step S20, gatekeeper 60 transmits this cancellation of meeting request and gives conference management unit 70;
The process of holding of this time meeting is cancelled in conference management unit 70 these cancellation of meeting requests of response, and discharges this meeting and hold the Internet resources that take; Generate a cancellation of meeting response message simultaneously;
Step S30, conference management unit 70 feeds back to gatekeeper 60 with the cancellation of meeting response message that generates;
Step S40, gatekeeper 60 are transmitted to the cancellation of meeting response message that receives and initiate terminal 90, make the user by checking that initiating terminal 90 result displayed learns whether the cancellation of meeting operation is successful.
Other bookkeeping processes are similar with top cancellation of meeting operation implementation procedure, just initiate the solicited message difference that terminal 90 sends, the operation difference that conference management unit 70 carries out according to different solicited messages, the object information that respective feedback is returned are also just different, no longer too much give unnecessary details here.
Above-mentioned in the implementation procedure of multimedia meeting holding method of the present invention, initiate terminal 90 can with meeting hold solicited message be encapsulated in the request of access (ARQ, AdmissionRequest) in the message field after, be transmitted to conference management unit 70 by gatekeeper 60; Simultaneously conference management unit 70 corresponding request can be encapsulated in by information by information or request insert and confirm (ACF, AdmissionConfirm) in the message field after, feed back to by gatekeeper 60 and to initiate terminal 90; Wherein insert request ARQ message field and insert and confirm that the ACF message field is to realize the criteria field of multimedia conferencing message transmission, promptly insert request ARQ message field and insert and confirm that the ACF message field is registration, management and the state (RAS that is used to realize the multimedia conferencing message transmission, RegistrationAdminister State) criteria field in the message, and RAS message is to meet in the multimedia conference system of agreement H.323, transmits registration, management between the different entities, bandwidth changes and the main information format of state information.
At first describe how to expand the ARQ message field in detail below, be encapsulated in the ARQ message field, and pass through gatekeeper 60 and be transmitted to meeting processing unit 70 will hold solicited message:
Each Field Definition of ARQ message is as follows:
AdmissionRequest ∷=SEQUENCE--(ARQ)＜!--SIPO＜DP n=" 10 "〉--〉＜dp n=" d10 "/requestSeqNum RequestSeqNum, callType CallType, callModel CallModel OPTIONAL, endpointIdentifier EndpointIdentifier, destinationInfo SEQUENCE OF AliasAddress OPTIONAL, destCallSignalAddress TransportAddress OPTIONAL, destExtraCallInfo SEQUENCE OF AliasAddress OPTIONAL, srcInfo SEQUENCE OF AliasAddress, srcCallSignalAddress TransportAddress OPTIONAL, bandWidth BandWidth, callReferenceValue CallReferenceValue, nonStandardData NonStandardParameter OPTIONAL,--nonstandard data are used to transmit nonstandard growth data and omit other fields }
Wherein for the nonstandard data field of nonStandardData, its standard definition is as follows: NonStandardParameter ∷=SEQUENCE{
nonStandardIdentifier NonStandardIdentifier，
data OCTET?STRING}
For the data in the NonStandardParameter field, multimedia meeting holding method of the present invention is carried out following expansion, holds solicited message to be used to carry and encapsulate:
NonStandardParameter ∷=SEQUENCE{ nonStandardIdentifier NonStandardIdentifier,＜!--SIPO＜DP n=" 11 "〉--〉＜dp n=" d11 "/〉 data ConferenceRequest-hold solicited message } ConferenceRequest ∷=SEQUENCE--the data{sequenceNumber RequestSeqNum among the corresponding NonStandardParameter of ConferenceRequest herein,--the sequence number protocolIdentifier OBJECT IDENTIFIER of order,--protocol-identifier commandType CommandType OPTIONAL,--command type conferenceName OCTET STRING (SIZE (1..40)),--meeting title conferenceAlias AliasAddress OPTIONAL,--meeting another name (annotating 1) conferencePwd OCTET STRING (SIZE (1..32)) OPTIONAL,--meeting password (annotating 2) terminalNum INTEGER (0..65535) OPTIONAL,--maximum meeting-place number conferenceMode ConferenceMode OPTIONAL,--conference model cardNumber OCTET STRING (SIZE (1..32)) OPTIONAL,--account number cardPwd OCTET STRING (SIZE (1..32)) OPTIONAL,--account number cipher t120Conference BOOLEAN OPTIONAL,--whether need data conferencing 0-not, 1-is multiPicture INTEGER (0..32) OPTIONAL,--many number of pictures, 0 expression no startTime INTEGER (0..4294967295) OPTIONAL,--(annotating 3) timeZone INTEGER (0..4294967295) OPTIONAL,--(annotating 3) sessionTime INTEGER (0..4294967295) OPTIONAL,--(annotating 4) dataRate DataRate OPTIONAL,--conference rate videoCoding VideoCoding OPTIONAL,--video coding videoResolution VideoResolution OPTIONAL,--video resolution framesPerSecond FrameRate OPTIONAL,--video frame rate voiceCoding VoiceCoding OPTIONAL,--speech coding＜!--SIPO＜DP n=" 12 "〉--〉＜dp n=" d12 "/〉 terminalInfo SEQUENCE OF TerminalInfo OPTIONAL--end message }
Above-mentioned notes 1, annotate 2, annotate 3 and annotate 4 be explained as follows:
Annotate 1: meeting is called in uses such as cancellation of meeting, inquiry meetings, convene/preset conference success back is returned from conference management unit 70.
Annotate 2: meeting password and clip pin are taked the ciphertext transmission, take the md5 encryption algorithm.
Annotate 3: meeting start time and time zone time adopt international UTC time format.
Annotate 4: meeting time span is minute being unit.Wherein: CommandType ∷=CHOICE
{ immediateBegin NULL,--(0) begins meeting immediately, need not fill in the time of meeting booking NULL,--(1) preset conference bookingCancel NULL,--(2) cancellation preset conference query NULL,--(3) inquiry meeting modify NULL,--(4) revise meeting ... ConferenceMode ∷=CHOICE--(annotating 5) { customizeMode NULL,--customization adaptMode NULL--self adaptation }
Wherein to annotating 5 note:
Annotate 5: when selecting custom model, the access rate in each meeting-place, look audio algorithm and form grade etc. and carry out, when selecting self adaptation, carry out relevant matches automatically by the conference management unit according to holding in the solicited message regulation.
DataRate ∷=CHOICE{ n64 NULL,--(0) 64kbps n2m64 NULL,--(1) 2 * 64kbps n3m64 NULL,--(2) 3 * 64kbps n4m64 NULL,--(3) 4 * 64kbps n5m64 NULL,--(4) 5 * 64kbps n6m64 NULL,--(5) 6 * 64kbps r384 NULL,--(6) 384kbps r1536 NULL,--(7) 1536kbps r1920 NULL,--(8) 1920kbps r128 NULL,--(9) 128kbps r192 NULL,--(10) 192kb r256 NULL,--(11) 256kbps r320 NULL,--(12) 320kbps r512 NULL,--(13) 512kbps r768 NULL,--(14) 768kbps r1152 NULL,--(15) 1152kbps r1472 NULL,--(16) 1472kbps ... VideoCoding ∷=CHOICE{ h261 NULL,--h263 NULL H.261,--H.263＜!--SIPO＜DP n=" 14 "〉--〉＜dp n=" d14 "/h264 NULL,--H.264 ... VideoResolution ∷=CHOICE{ qcif NULL,--176 * 144 resolution cif NULL,--352 * 288 resolution fcif NULL,--704 * 576 resolution ... FramePerSecond ∷=CHOICE{ f30 NULL,--30 frames/second f15 NULL,--15 frames/second f10 NULL,--10 frames/second f75 NULL--7.5 frame/seconds } VoiceCoding ∷=CHOICE{ g711Alaw64k NULL, g711Alaw56k NULL, g711Ulaw64k NULL, g711Ulaw56k NULL, g722-64k NULL, g722-56k NULL,＜!--SIPO＜DP n=" 15 "〉--〉＜dp n=" d15 "/g722-48k NULL, g7231 NULL, g728 NULL, g729 NULL, TerminalInfo ∷=SEQUENCE{ aliasAddress SEQUENCE OF AliasAddress,--annotate 6 dataRate DataRate OPTIONAL,--speed terminalType TerminalType OPTIONAL,--terminal type chairControl BOOLEAN OPTIONAL,--annotate 7 videoCoding VideoCoding OPTIONAL,--video coding videoResolution VideoResolution OPTIONAL,--video resolution frameRate FrameRate OPTIONAL,--video frame rate voiceCoding VoiceCoding OPTIONAL--speech coding }
Note is annotated 6, is annotated 7:
Annotate 6: the combination of termination number and terminal name etc.;
Annotate 7: chairman's control authority, 0-does not have chairman's control authority, and 1-has chairman's control authority.TerminalType∷＝CHOICE{
IsdnVideo NULL,--the ISDN video terminal
V35 NULL,--terminal V.35
E1 NULL,--the E1 terminal
Ip NULL,--the IP terminal
Phone NULL,--the Phone terminal }
Through top the ARQ message field is expanded after, initiate terminal 90 and just can be encapsulated in the ARQ message field holding solicited message, be forwarded in the conference management unit 70 by gatekeeper 60.
How explanation expands the ACF message field more below, so that conference management unit 70 is encapsulated into request results information in the ACF message field, feeds back to by gatekeeper 60 and initiates terminal 90:
Wherein each field of ACF message is defined as follows:
AdmissionConfirm ∷=SEQUENCE--(ACF) { requestSeqNum RequestSeqNum, bandWidth BandWidth, callModel CallModel, destCallSignalAddress TransportAddress, irrFrequency INTEGER (1..65535) OPTIONAL, nonStandardData NonStandardParameter OPTIONAL,--nonstandard data are used to transmit nonstandard growth data and omit other fields }
Multimedia meeting holding method of the present invention is expanded the data in the NonStandardParameter field equally, is used for the package request object information, expands as follows:
NonStandardParameter ∷=SEQUENCE{ nonStandardIdentifier NonStandardIdentifier, data ConferenceConfirm}＜!--SIPO＜DP n=" 17 "〉--〉＜dp n=" d17 "/〉 ConferenceConfirm ∷=SEQUENCE--the data{ sequenceNumber RequestSeqNum among the corresponding NonStandardParameter of ConferenceConfirm herein,--the sequence number protocolIdentifier OBJECT IDENTIFIER of order,--protocol-identifier conferenceAlias AliasAddress OPTIONAL,--annotate 8 terminalNum INTEGER (0..65535) OPTIONAL,--maximum meeting-place number t120Conference BOOLEAN OPTIONAL,--whether support data conferencing 0-not, 1-is multiPicture INTEGER (0..32) OPTIONAL,--many number of pictures, 0 expression no startTime INTEGER (0..4294967295) OPTIONAL,--meeting start time timeZone INTEGER (0..4294967295) OPTIONAL,--time zone sessionTime INTEGER (0..4294967295) OPTIONAL,--meeting time span dataRate DataRate OPTIONAL,--conference rate videoCoding VideoCoding OPTIONAL,--video coding videoResolution VideoResolution OPTIONAL,--video resolution framesPerSecond FrameRate OPTIONAL,--video frame rate voiceCoding VoiceCoding OPTIONAL,--speech coding terminalInfo SEQUENCE OF TerminalInfo OPTIONAL--meeting field information conferenceResult ConferenceResult,--execution result resultDescription OCTET STRING OPTIONAL--be descriptor as a result }
Note annotates 8:
Annotate 8: the meeting another name can be E.164 number or H.323 ID etc., and this meeting another name is the unique identification of meeting, can be used for cancellation of meeting, terminal is dialled in meeting etc.;
ConferenceResult ∷=CHOICE{ success NULL,--successful invalidUser NULL,--the illegal noExistUser NULL of user profile,--there is not pwdError NULL in the user,--password mistake systemError NULL,--the not enough conferenceCollide NULL of the system failure or system resource,--meeting meeting conflict cardOnLine NULL,--the online userForbiddened NULL of card number user,--initiate the user and be suspended pwdChgInvalid NULL,--password can not be revised outOfMoney NULL,--Sorry, your ticket has not enough value networkError NULL,--network failure userForbiddened NULL,--initiate the user and be suspended invalidConference NULL,--there is not unknownReason NULL in meeting,--agnogenio ...
Therefore, by above-mentioned the ACF message field is expanded after, request results information can be encapsulated in the ACF message field, feed back to by gatekeeper 60 by conference management unit 70 and initiate terminal 90.
Multimedia meeting holding method of the present invention also can directly directly be expanded RAS message, is encapsulated in the RAS message of direct expansion and transmits holding solicited message and request results information.Being defined as follows of each field of RAS message:
RasMessage ∷=CHOICE{＜!--SIPO＜DP n=" 19 "〉--〉＜dp n=" d19 "/gatekeeperRequest GatekeeperRequest, gatekeeperConfirm GatekeeperConfirm, gatekeeperReject GatekeeperReject, registrationRequest RegistrationRequest, registrationConfirm RegistrationConfirm, registrationReject RegistrationReject, unregistrationRequest UnregistrationRequest, unregistrationConfirm UnregistrationConfirm, unregistrationReject UnregistrationReject, admissionRequest AdmissionRequest, admissionConfirm AdmissionConfirm, admissionReject AdmissionReject, bandwidthRequest BandwidthRequest, bandwidthConfirm BandwidthConfirm, bandwidthReject BandwidthReject, disengageRequest DisengageRequest, disengageConfirm DisengageConfirm, disengageReject DisengageReject, locationRequest LocationRequest, locationConfirm LocationConfirm, locationReject LocationReject, infoRequest InfoRequest, infoRequestResponse InfoRequestResponse, nonStandardMessage NonStandardMessage,--nonstandard message is used to define nonstandard extended message and omits other message }
Be that the nonstandard message field of nonStandardMessage is expanded equally, its extend type repeats no more here with the above-mentioned form that the nonstandard data field of nonStandardData in ARQ and the ACF message field is expanded.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (16)
1, a kind of multimedia meeting holding method is used for the processing that process is held in the multimedia conference system meeting, and described multimedia conference system comprises a plurality of terminals, gatekeeper, multipoint control unit and conference management unit, it is characterized in that comprising:
The request for conference step:
When (10) preparing to hold a meeting, a selected terminal is as initiating terminal in described a plurality of terminals;
(11) by initiating terminal the solicited message of holding of this meeting is passed through the gatekeeper and is transmitted to the conference management unit; The conference creation step:
(20) whether conference management unit judges current network resources can support this meeting; If then this meeting is created in the conference management unit, and according to hold solicited message to this meeting hold attribute setting, change of team view is then held step; If not, then the conference management unit is refused this meeting and is held request;
Step is held in meeting:
(30) hold this meeting by the conference management unit controls multipoint control unit.
2, multimedia meeting holding method according to claim 1, it is characterized in that, step further comprises in (11): the gatekeeper carries out authentication to the solicited message of holding that the initiation terminal is sent, if authentication is passed through, then the gatekeeper transmits this and holds solicited message to the conference management unit; If authentication is not passed through, then the gatekeeper does not transmit this and holds solicited message to the conference management unit, the request of the holding failure of this time meeting.
3, multimedia meeting holding method according to claim 1 is characterized in that, holds solicited message described in the step (11) and comprises the participant terminal number of this meeting or each terminal information of participant of this meeting; The conference management unit judges according to the participant terminal number of this meeting or each terminal information of participant of this meeting whether current network resources can support this meeting in the step (20).
4, multimedia meeting holding method according to claim 1 is characterized in that,
Hold solicited message described in the step (11) and also comprise holding the time of this meeting;
Be provided with described in the step (20) and comprise according to the time of holding time of holding of this meeting and being provided with this meeting;
Step further comprises in (30): the conference management unit arrive this meeting hold the time time, the control multipoint control unit is held this meeting.
5, multimedia meeting holding method according to claim 1 is characterized in that,
Hold each terminal information of participant that solicited message also comprises this meeting described in the step (11);
Be provided with described in the step (20) and also comprise according to each terminal information of participant of this meeting each terminal of participant and being provided with respectively this meeting;
Step (30) also comprises afterwards:
(31) the conference management unit sends to multipoint control unit with each terminal information of participant that is provided with;
(32) each terminal of participant is called out multipoint control unit request affiliation respectively, or calls out each terminals joining the conference of participant by multipoint control unit respectively according to each terminal information of participant.
6, multimedia meeting holding method according to claim 1 is characterized in that, step further comprises in (20): when being, information is passed through in the request of generation in judged result in the conference management unit; For not the time, information is not passed through in the request that then generates in judged result.
7, multimedia meeting holding method according to claim 6, it is characterized in that, judged result also comprises after being in the step (20): the conference management unit passes through in the information for the meeting another name of this this time of meeting allocation identification meeting, the described meeting another name request of being encapsulated in.
8, multimedia meeting holding method according to claim 7 is characterized in that, step (20) also comprises afterwards:
(21) the conference management unit will ask not feed back to the initiation terminal by information by the gatekeeper by information or request.
(22) initiate terminal and pass through to parse in the information meeting another name of this meeting, and utilize described meeting another name that various management are carried out in this time meeting in the request that receives.
9, multimedia meeting holding method according to claim 8 is characterized in that, described initiation terminal is carried out various management by described meeting another name to this time meeting and comprised:
Initiate terminal and identify as this meeting index,, the process of holding of this meeting is inquired about by visit conference management unit with this meeting another name;
Initiate terminal and identify as this meeting index,, the attribute of holding of this meeting is made amendment by visit conference management unit with this meeting another name;
Initiate terminal and identify as this meeting index,, operation is cancelled in this meeting by visit conference management unit with this meeting another name.
10, multimedia meeting holding method according to claim 8 is characterized in that, step (22) also comprises afterwards:
(23) initiate terminal the meeting another name that parses is notified to other-end, each terminal of notified meeting another name is passed through this meeting another name various management is carried out in this time meeting.
11, multimedia meeting holding method according to claim 10 is characterized in that, described terminal is carried out various management by described meeting another name to this time meeting and comprised:
Terminal as this meeting index sign, by visit conference management unit, requires to add or withdraw from this meeting with this meeting another name;
Terminal,, is inquired about the process of holding of this meeting by visit conference management unit as this meeting index sign with this meeting another name;
Terminal,, is made amendment to the attribute of holding of this meeting by visit conference management unit as this meeting index sign with this meeting another name;
Terminal as this meeting index sign, by visit conference management unit, is cancelled operation to this meeting with this meeting another name.
12, multimedia meeting holding method according to claim 8 is characterized in that, the initiation terminal is encapsulated in the solicited message of holding of this meeting in the access request message field in the step (11), is transmitted to the conference management unit by the gatekeeper; The conference management unit will ask not to be encapsulated in the access acknowledgement message field by information by information or request in the step (21), feed back to the initiation terminal by the gatekeeper; Described access request message field and the criteria field that inserts in registration, management and the status message that the acknowledgement message field is a realization multimedia conferencing message transmission.
13, multimedia meeting holding method according to claim 12 is characterized in that, the initiation terminal is encapsulated in the solicited message of holding of this meeting in the nonstandard data field that inserts the request message field in the step (11); The conference management unit will ask not to be encapsulated in the nonstandard data field that inserts the acknowledgement message field by information by information or request in the step (21); Described nonstandard data field is the criteria field that inserts in request message field and the access acknowledgement message field.
14, multimedia meeting holding method according to claim 8 is characterized in that, the initiation terminal is encapsulated in the solicited message of holding of this meeting in registration, management and the status message in the step (11), is transmitted to the conference management unit by the gatekeeper; The conference management unit will ask not to be encapsulated in registration, management and the status message by information by information or request in the step (21), feed back to the initiation terminal by the gatekeeper; Described registration, management and status message are the standard message that realizes the multimedia conferencing message transmission.
15, multimedia meeting holding method according to claim 14, it is characterized in that, the request of holding in solicited message and the step (21) in the step (11) is not encapsulated in the nonstandard message field of registration, management and status message by information by information or request, and described nonstandard message field is the criteria field in registration, management and the status message.
16, according to claim 2,3,4,5,13 or 15 described multimedia meeting holding method, it is characterized in that,
Hold meeting title, meeting password or the meeting that solicited message also comprises this meeting described in the step (11) and hold speed;
Meeting title, meeting password or the meeting also comprise according to this meeting are set described in the step (20) to be held speed speed setting is held in meeting title, meeting password or the meeting of this meeting.
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| CNB2004100005016A CN100433626C (en) | 2004-01-08 | 2004-01-08 | Multimedia conference convening method |
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| CNB2004100005016A CN100433626C (en) | 2004-01-08 | 2004-01-08 | Multimedia conference convening method |
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| CN2007101107330A Division CN101072319B (en) | 2004-01-08 | 2004-01-08 | Multimedia conference system and device |
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| CN1642096A true CN1642096A (en) | 2005-07-20 |
| CN100433626C CN100433626C (en) | 2008-11-12 |
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| CNB2004100005016A Expired - Lifetime CN100433626C (en) | 2004-01-08 | 2004-01-08 | Multimedia conference convening method |
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