CN101710962B - Method and device for distributing video conference resources - Google Patents
Method and device for distributing video conference resources Download PDFInfo
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Abstract
The embodiment of the invention discloses a method and a device for distributing video conference resources, belonging to the field of video conference communication. The method comprises reserving media processing resources for the conference and presetting conference appointment matching information; obtaining the conference appointment information which contains conference type information and related information of terminal; judging whether the conference and the terminal is qualified to use the reserved media processing resources according to the conference appointment matching information; if yes, distributing the reserved media processing resources for the conference. The device comprises a setting module, an obtaining module, a judging module and a matching module. The embodiment of the invention can reserve partial dedicated resources for important conferences in conference resource appointment competition with classification of conference importance taken into consideration, thus satisfying personalized requirement of users on the conferences and enhancing the use value of the system.
Description
Technical field
The invention belongs to the video conference communication field, particularly a kind of method and apparatus of distributing video conference resources.
Background technology
Video conferencing system is to support the multimedia communications system of sound, video and data communication; (Multipoint Control Unit, MCU) assemblies such as equipment, gateway device, registrar, call server, conference applications server and transmission network are formed by video conference terminal equipment, multipoint control unit for it.Video conferencing system in the market generally follow ITU-T H.320, ITU-T H.323, ITU-T H.324, one or more relevant criterion such as IETF SIP.Wherein, ITU-T H.320 standard definition with the composition and the protocols of the video conferencing system that is carried on circuit-switched network have been described.In standard H.320, standard entities such as terminal, MCU, gateway have been defined.H.320 standard is in the issue nineties in last century, and first generation video conferencing system is thought by the system that follows this standard.
Video conference terminal is made up of codec and sound, video input/output peripheral.Codec is responsible for accomplishing the compressed encoding and the decoding of medium such as sound, video, and the communication function of network.The terminal connects input/output peripherals such as microphone, sound equipment, camera, display, is used for accomplishing the input and output of sound, video.The terminal comprises user's input interface, and like IR remote controller, the user passes through input interface to terminal input instruction and information.Being responsible for connecting with the other side's terminal (or MCU, gateway) in the terminal, consults both sides' media codec ability, and the medium code/decode format that adopts both sides to support carries out Media Stream communication.
MCU is used to provide the Multi-Party Conference function.The terminal and the MCU that participate in Multi-Party Conference communication connect, and carry out the communication of Media Stream.MCU is responsible for accomplishing exchange, format conversion and the mixed processing of Media Stream.For acoustic medium stream, MCU is generally the acoustic medium stream that a process of each terminal output audio mixing is handled, and the sound at the terminal, a few road that the volume of the synthetic general selection input of audio mixing is maximum mixes.For video media stream, MCU can send the single-image video flowing at another terminal for certain terminal, if MCU supports many picture functions, also can synthesize a multiple image to the video that a plurality of terminals are come, and sends to certain or some terminals then.
Gateway is responsible for accomplishing between the various network or the intercommunication between the terminal of different abilities, for example supports H.320 terminal and H.323 communication between terminals.
ITU-T is standard definition and composition and the protocols of having described the multimedia conference system that is carried on IP network H.323, belongs to second generation video conference standard.
H.320 standard is the same, and H.323 standard has also defined terminal, MCU and gateway entity, has also defined gatekeeper's entity in addition.The gatekeeper mainly accomplishes functions such as facility registration, rights management, address resolution.After terminal, MCU, the gateway device start, can register to the gatekeeper, log-on message comprises information such as the title, number, IP address of equipment.When terminal call meeting number adds meeting, can ask meeting number is converted into the IP address of MCU equipment to the gatekeeper, the terminal uses the IP address of resolving to set up to call out to connect.Gatekeeper's main processing signaling is not generally handled Media Stream.
Ietf definition with described based on session initial protocol (Session Initiation Protocol, SIP) video conferencing system of agreement and protocols.RFC 3261 is the SIP core standard, described the user agent (User Agent, UA), registrar (REGISTRAR), acting server (PROXY), the function allocation of Redirect Server entities such as (REDIRECT) and interactive mode each other.Terminal, MCU, gateway device belong to user agent device.Registrar is responsible for collecting the call address information of user agent device.Acting server and Redirect Server are accomplished the route of calling out.Described a kind of frame structure of video conferencing system at RFC4353, mentioned a kind of FOCUS entity, the function class of this entity is similar to foregoing MCU.
3GPP TS 24.147 has defined that (many achievements of IETF are inherited and used for reference to the standard of 3GPP for IP Multimedia Subsystem, videoconference system architecture IMS) and method based on IP Multimedia System.In this standard, the conference applications server is used for handling the call setup of multipoint conference, and (Multimedia Resource Function Processor MRFP) handles the multipoint conference Media Stream by Multimedia resource function processor (MRFP).Bearer network is used to provide the transmission of data such as medium between each equipment, signaling, control.
At present; Many video conferencing systems are all supported the conference reservation function; The conference reservation operation is used for keeping certain meeting usefulness that one group of MCU resource is given following certain time period, thereby after guaranteeing this time of meeting arrival, system can normally carry out in resource aspect assurance meeting.In the present conference dispatching implementation, all MCU resources are taked consistent scheduling strategy, and the mode that gets earlier according to request earlier provides service to the user.Under such scheduling mode, all users are equality to resource contention, and different meetings is an equality to resource contention.
But in real world applications, part customer requirement system can be that certain type of user priority guarantees conferencing resource, the for example managerial meeting held of the important leader of company.Adopt traditional conference dispatching implementation method, can't satisfy this application scenarios.
Summary of the invention
The embodiment of the invention provides a kind of method and apparatus of distributing video conference resources, can consider the classification of meeting importance at the conference reservation resource contention, gives important meeting reserve part private resource, and concrete technical scheme is following:
A kind of method of distributing video conference resources comprises:
Be meeting reserved media processing resources and preset conference reservation match information;
Obtain conference reservation information, said conference reservation information comprises the relevant information at conference type information and terminal;
Judge according to the conference reservation match information whether said meeting and said terminal meet the condition of using reserved media processing resources;
If then be the media processing resources that said meeting distributes said reservation.
A kind of device of distributing video conference resources comprises:
Module is set, is used to meeting reserved media processing resources and preset conference reservation match information;
Acquisition module is used to obtain conference reservation information, and said conference reservation information comprises the relevant information at conference type information and terminal;
Judge module is used for judging according to the conference reservation match information whether said meeting and said terminal meet the condition of using reserved media processing resources;
Distribution module, be used for when the judged result of judge module when being, then distribute the media processing resources of said reservation for said meeting.
In embodiments of the present invention, pass through to be meeting reserved media processing resources and preset conference reservation match information; Obtain conference reservation information, said conference reservation information comprises the relevant information at conference type information and terminal; Judge according to the conference reservation match information whether said meeting and said terminal meet the condition of using reserved media processing resources; If; The media processing resources of then distributing said reservation for said meeting can be considered the classification of meeting importance at the conference reservation resource contention, gives important meeting reserve part private resource; Satisfy the meeting demand of user individual, improved the use value of system.
Description of drawings
Fig. 1 is the flow chart of the method for the distributing video conference resources that provides of the embodiment of the invention;
Fig. 2 is the videoconference system architecture figure that the embodiment of the invention provides;
Fig. 3 is the detail flowchart of the distributing video conference resources method that provides of the embodiment of the invention;
Fig. 4 is the successful structure chart of conference reservation that the embodiment of the invention provides;
Fig. 5 is the successful another kind of structure chart of conference reservation that the embodiment of the invention provides;
Fig. 6 is the structure chart of the device of the distributing video conference resources that provides of the embodiment of the invention.
Embodiment
Core concept of the present invention is: pass through to be meeting reserved media processing resources and preset conference reservation match information; Obtain conference reservation information, said conference reservation information comprises the relevant information at conference type information and terminal; Judge according to the conference reservation match information whether said meeting and said terminal meet the condition of using reserved media processing resources; If, then be the media processing resources that said meeting distributes said reservation, can consider the classification of meeting importance at the conference reservation resource contention, give important meeting reserve part private resource, improve the use value of system.
Below in conjunction with accompanying drawing and preferred implementation technical scheme of the present invention is elaborated.
The embodiment of the invention provides a kind of method of distributing video conference resources, and is as shown in Figure 1, comprising:
101, be meeting reserved media processing resources and preset conference reservation match information;
102, obtain conference reservation information, this conference reservation information comprises the relevant information at conference type information and terminal;
103, judge according to the conference reservation match information whether this meeting and this terminal meet the condition of using reserved media processing resources;
104, if then distribute the media processing resources of this reservation for this meeting.
Further, this conference reservation match information comprises meeting match information and terminal match information, and wherein, this meeting match information comprises: the meeting attribute is that high-level meeting or meeting video format are higher than preset rank; The terminal match information comprises: termination number is that the video format that preset value or terminal are supported is higher than pre-set level.
Further, to be that high-level meeting and meeting video format are higher than relation between the preset rank a kind of below comprising at least for this meeting attribute:
With or and not.
Further, to be that video format that preset value and terminal are supported is higher than relation between the pre-set level a kind of below comprising at least for this termination number:
With or and not.
Further; Judge according to the conference reservation match information whether this meeting and this terminal meet the condition of using reserved media processing resources; Comprise: judge according to the meeting matched rule whether this meeting can use the media processing resources of reservation; Judge according to the terminal matched rule whether this terminal can use the media processing resources of reservation,, judge that then this meeting and this terminal meet the condition of using reserved media processing resources if both all can use.
Below in conjunction with concrete example the embodiment of the invention is carried out detailed description, but this example does not constitute the restriction to protection range of the present invention.Be illustrated in figure 2 as the used videoconference system architecture of example.But diagram does not reflect all minutias of a real system, and the branch of the kind of equipment, quantity, function and equipment entity is mixed and can be configured according to actual needs in the system of a reality.This system is a video conferencing system based on IMS.In the IMS environment, session control is used Session Initiation Protocol.CSCF (Call Session Control Function; CSCF) be core component in the IMS system; In the IMS standard, can further be decomposed into assemblies such as P-CSCF, I-CSCF, S-CSCF, CSCF is used for accomplishing endpoint registration, calling route, service trigger to functions such as application servers.The conference applications server is responsible for handling the conferencing resource configuration and scheduling, multipoint conference session are set up, the medium of control MCU are handled behavior, and for example controlling MCU will be from the video distribution at speech terminal to other all terminal.MCU is responsible for carrying out the medium processing of multipoint conference, and in the present embodiment, MCU carries out the functional role of MRFP, and the conference applications server is carried out the functional role of MRFC.In this system, PC software terminal and hardware terminal are arranged, the PC software terminal is supported H.263 CIF video format, hardware terminal can be supported 720p HD video form.
First example:
In this example, the PC software terminal is mainly used in the enterprises employee communication of handling official business, and hardware terminal is mainly used in and holds Executive Control Meeting.The customer requirements hardware terminal can be held a meeting at any time.For inferior, be equipped with one group of special-purpose MCU resource to hardware terminal, these resources do not allow software terminal to use.
Below in conjunction with Fig. 3 the flow process of the method for the distributing video conference resources of this example is elaborated:
301, the conference applications server is collected the MCU resource information.
Concrete, when each MCU and conference applications server connect, the resource description information of equipment is reported the conference applications server.The information description form can be like table 1 time:
| The logic port number | 32 |
| Total bandwidth | 50Mbps |
| The Video processing number of resources | 256 |
| H.263CIF, one the tunnel decodes needs number of resources | 1 |
| H.263CIF, one the tunnel encodes needs number of resources | 2 |
| One tunnel decode resources number H.264CIF | 2 |
| One tunnel coding resource number H.264CIF | 4 |
| One tunnel decode resources number H.264720p | 20 |
| One tunnel coding resource number H.264720p | 40 |
Table 1
302, the conference applications server divides into groups the MCU resource, and MCU1 is grouped into senior resource (Rh) group, and MCU2 is grouped into low-level sources (R1) group.
303, conference applications server resource dispatching algorithm configuration meeting matched rule and terminal matched rule.
Particularly, the meeting matched rule can be if conference capability is supported the 720p high-definition format, can use the MCU resource of Rh group; The terminal matched rule; The terminal of terminal number 10 beginnings is joined among the MCU of Rh group;
304, the conference applications server is received the conference reservation list that the user submits to, and confirmation slip information can be as shown in table 2:
| Meeting number | 9001 |
| The meeting title | " my meeting " |
| Time started | 9: 0 on the 1st January in 2009 |
| Concluding time | 10: 0 on the 1st January in 2009 |
| Capability set 1 | 2Mbps、H.264720p |
| Capability set 2 | 384Kbps、H. |
| Conference member | |
| 1001，1002，2001，2002 |
Table 2
305, conference applications server meeting matched rule and terminal matched rule are handled conference reservation list information, judge whether this meeting can use Rh group MCU resource, and which terminal can be used the MCU resource.
Particularly, the conference applications server can use the Rh resource according to this meeting of meeting matched rule judgement; Judge terminal 1001 according to the terminal matched rule, Rh group MCU resource is used at terminal 1002, terminal 2001, and the MCU resource of R1 group is used at terminal 2002.
306, calculating and MCU resource occupation that the conference applications server carries out the meeting topological structure calculate.
Particularly, the resource computational methods of different conference reservation system are not quite similar, and the present invention does not pay close attention to computational methods and realizes details, but the output result must satisfy the meeting matched rule of front definition and the check of terminal matched rule.In the present embodiment, provide simple computational methods.The conference applications server from the Rh group, selects a MCU to be used for handling high definition conference according to matched rule and the terminal is inserted, and promptly selects unique MCU1, and with terminal 1001, terminal 1002 is dispatched to MCU1.The conference applications server selects a MCU to handle the part that does not satisfy matched rule from R1, promptly selects unique MCU2, and with terminal 2001, terminal 2002 is dispatched to MCU2.On MCU1, keep a cascade port resource in addition, MCU2 keeps a cascade port resource, and purpose is that the son conference on MCU1 and the MCU2 is cascaded up, and forms a complete meeting.The conferencing resource server can be as shown in table 3 below to this meeting resources reserved:
| MCU?ID | Port number | Bandwidth | The Video processing resource |
| MCU1 | 3 | 4.384Mbps | 63 |
| MCU2 | 3 | 1152Kbps | 0 |
Table 3
Do explanation in the face of the content of above-mentioned table 3 down:
MCU1 need connecting terminal 1001, terminal 1002 and and MCU2 carry out cascade, so take 3 port resources, the 2Mbps call-rate are adopted with terminal 1002 in terminal 1001; And cascade port adopts 384Kbps speed; So the total bandwidth is 4.384Mbps, 1001 and 1002 adopt H.264720p encoding and decoding, and cascade port adopts H.263 CIF encoding and decoding; Need carry out format conversion between them; Need to use the Video processing resource, suppose that here carrying out one the tunnel H.264720p arrives the H.263 mutual conversion between the CIF, need to use 63 Video processing resources.
Terminal 2001 during MCU2 need connect, terminal 2002 and and MCU1 carry out cascade; So take 3 port resources; All of the port all adopts the 384Kbps call-rate, so the total bandwidth is 1152Kbps, all of the port all adopts H.263 CIF encoding and decoding; Need not carry out format conversion between them, so do not consume the Video processing resource.The conferencing resource program checkout is on January 1st, 9 o'clock 1 January 1 in 2009 10 these time intervals, and whether the MCU surplus resources can satisfy the needs of this conference reservation, if satisfy then preengage successfully, fails otherwise preengage.Fig. 4 connects the topological relation sketch map for the successful meeting of reservation.
Second example
In this example, customer requirements is supported the VIP conference type, the only open few users of giving of the reservation authority of the type meeting, and the resource of the type meeting needs preferential the assurance.Below in conjunction with Fig. 3 this example is carried out detailed description:
301, the conference applications server is collected the MCU resource information, and particular content can repeat no more at this referring to example 1 corresponding steps.
302, the conference applications server divides into groups the MCU resource, and particular content can repeat no more at this referring to example 1 corresponding steps.
303, the conference applications server is that resource scheduling algorithm is provided with meeting matched rule and terminal matched rule.
Particularly, the meeting matched rule can be: if conference type is the VIP meeting, can use the MCU resource of Rh group; The terminal matched rule can be: the resource of Rh group and R1 group can be used in all terminals;
304, the conference applications server is received the conference reservation list information that the user submits to.
Particularly, in this example, the content of the conference reservation inventory information of the conference reservation inventory information and first example is basic identical, but has increased conference type information, and is as shown in table 4:
| Meeting number | 9001 |
| The meeting title | " my meeting " |
| Conference type | The VIP meeting |
| Time started | 9: 0 on the 1st January in 2009 |
| Concluding time | 10: 0 on the 1st January in 2009 |
| Capability set 1 | 2Mbps、H.264720p |
| Capability set 2 | 384Kbps、H. |
| Conference member | |
| 1001，1002，2001，2002 |
Table 4
305, conference applications server meeting matched rule and terminal matched rule are handled conference reservation list information, judge whether this meeting can use Rh group MCU resource, and which terminal can be used the MCU resource.
Particularly, the conference applications server is handled conference reservation list information according to the meeting matched rule: because for the VIP meeting, judge that this meeting can use the Rh resource; The terminal matched rule is handled conference reservation list information: judge terminal 1001, Rh group MCU resource or R1 group MCU resource can be used in terminal 1002, terminal 2001, terminal 2002.
306, calculating and MCU resource occupation that the conference applications server carries out the meeting topological structure calculate.
Particularly, the conference applications server is selected a MCU to be used for processing terminal from Rh group according to matched rule to insert, promptly select unique MCU1, with terminal 1001, and terminal 1002, terminal 2001, terminal 2002 all is dispatched to MCU1.The conferencing resource server can be as shown in table 5 to this meeting resources reserved:
| MCU?ID | Port number | Bandwidth | The Video processing resource |
| MCU1 | 4 | 4.768Mbps | 126 |
Table 5
Do explanation in the face of the content of above-mentioned table 5 down:
MCU1 needs connecting terminal 1001, terminal 1002, terminal 2001, terminal 2002, so take 4 port resources, the 2Mbps call-rate is adopted with terminal 1002 in terminal 1001; The 384Kbps call-rate is adopted with terminal 2002 in terminal 2001; So the total bandwidth is 4.768Mbps, H.264 720p encoding and decoding are adopted with terminal 1002 in terminal 1001, and H.263 CIF encoding and decoding are adopted at terminal 2001, terminal 2002 cascade ports; Need carry out format conversion between them; Need use the Video processing resource, H.264 720p need 126 Video processing resources of use to the H.263 mutual conversion between the CIF to suppose to carry out two the tunnel here.The conferencing resource program checkout is on January 1st, 9 o'clock 1 January 1 in 2009 10 these time intervals, and whether the MCU surplus resources can satisfy the needs of this conference reservation, if satisfy then preengage successfully, fails otherwise preengage.Fig. 5 connects the topological relation sketch map for the successful meeting of reservation.
Based on the inventive concept identical with method, the embodiment of the invention provides the device of distributing video conference resources, and is as shown in Figure 6, comprising:
Module is set, is used to meeting reserved media processing resources and preset conference reservation match information;
Acquisition module is used to obtain conference reservation information, and this conference reservation information comprises the relevant information at conference type information and terminal;
Judge module is used for judging according to the conference reservation match information whether this meeting and this terminal meet the condition of using reserved media processing resources;
Distribution module, be used for when the judged result of judge module when being, then distribute the media processing resources of this reservation for this meeting.
Further, this this conference reservation match information that module setting is set comprises meeting match information and terminal match information, and wherein, this meeting match information comprises: the meeting attribute is that high-level meeting or meeting video format are higher than preset rank; The terminal match information comprises: termination number is that the video format that preset value or terminal are supported is higher than pre-set level.
Further, it is a kind of below comprising at least that this meeting attribute that the module setting is set is that high-level meeting and meeting video format are higher than relation between the preset rank:
With or and not.
Further, to be that video format that preset value and terminal are supported is higher than relation between the pre-set level a kind of below comprising at least for this termination number that module setting is set:
With or and not.
Further; This judge module specifically is used for judging according to the meeting matched rule whether this meeting can use the media processing resources of reservation; Judge according to the terminal matched rule whether this terminal can use the media processing resources of reservation; If both all can use, judge that then this meeting and this terminal meet the condition of using reserved media processing resources.
In embodiments of the present invention, pass through to be meeting reserved media processing resources and preset conference reservation match information; Obtain conference reservation information, said conference reservation information comprises the relevant information at conference type information and terminal; Judge according to the conference reservation match information whether said meeting and said terminal meet the condition of using reserved media processing resources; If, then be the media processing resources that said meeting distributes said reservation, can consider the classification of meeting importance at the conference reservation resource contention, give important meeting reserve part private resource, improve the use value of system.
Above-mentioned explanation illustrates and has described a preferred embodiment of the present invention; But as previously mentioned; Be to be understood that the present invention is not limited to the form that this paper discloses, should do not regard eliminating as, and can be used for various other combinations, modification and environment other embodiment; And can in invention contemplated scope described herein, change through the technology or the knowledge of above-mentioned instruction or association area.And change that those skilled in the art carried out and variation do not break away from the spirit and scope of the present invention, then all should be in the protection range of the appended claim of the present invention.
Claims (8)
1. the method for a distributing video conference resources is characterized in that, comprising:
Be meeting reserved media processing resources and preset conference reservation match information; Said conference reservation match information comprises meeting match information and terminal match information, and wherein, said meeting match information comprises: the meeting attribute is that high-level meeting or meeting video format are higher than preset rank; The terminal match information comprises: termination number is that the video format that preset value or terminal are supported is higher than pre-set level;
Obtain conference reservation information, said conference reservation information comprises the relevant information at conference type information and terminal;
Judge according to the conference reservation match information whether said meeting and said terminal meet the condition of using reserved media processing resources;
If then be the media processing resources that said meeting distributes said reservation.
2. the method for claim 1 is characterized in that, it is a kind of below comprising at least that said meeting attribute is that high-level meeting, meeting video format are higher than relation between the preset rank:
With or and not.
3. the method for claim 1 is characterized in that, it is a kind of below comprising at least that said termination number is that video format that preset value, terminal are supported is higher than relation between the pre-set level:
With or and not.
4. the method for claim 1 is characterized in that, judges that according to the conference reservation match information whether said meeting and said terminal meet the condition of using reserved media processing resources, comprising:
Judge according to the meeting matched rule whether said meeting can use the media processing resources of reservation; Judge according to the terminal matched rule whether said terminal can use the media processing resources of reservation; If both all can use, judge that then said meeting and said terminal meet the condition of using reserved media processing resources.
5. the device of a distributing video conference resources is characterized in that, comprising:
Module is set, is used to meeting reserved media processing resources and preset conference reservation match information; Said conference reservation match information comprises meeting match information and terminal match information, and wherein, said meeting match information comprises: the meeting attribute is that high-level meeting or meeting video format are higher than preset rank; The terminal match information comprises: termination number is that the video format that preset value or terminal are supported is higher than pre-set level;
Acquisition module is used to obtain conference reservation information, and said conference reservation information comprises the relevant information at conference type information and terminal;
Judge module is used for judging according to the conference reservation match information whether said meeting and said terminal meet the condition of using reserved media processing resources;
Distribution module, be used for when the judged result of judge module when being, then distribute the media processing resources of said reservation for said meeting.
6. device as claimed in claim 5 is characterized in that, it is a kind of below comprising at least that the said meeting attribute that the module setting is set is that high-level meeting, meeting video format are higher than relation between the preset rank:
With or and not.
7. device as claimed in claim 5 is characterized in that, it is a kind of below comprising at least that the said termination number that the module setting is set is that video format that preset value, terminal are supported is higher than relation between the pre-set level:
With or and not.
8. device as claimed in claim 5; It is characterized in that; Said judge module specifically is used for judging according to the meeting matched rule whether said meeting can use the media processing resources of reservation; Judge according to the terminal matched rule whether said terminal can use the media processing resources of reservation,, judge that then said meeting and said terminal meet the condition of using reserved media processing resources if both all can use.
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| CN1992878A (en) * | 2005-12-30 | 2007-07-04 | 中兴通讯股份有限公司 | Method for implementing resource scheduling of video conference |
| CN101060415A (en) * | 2006-06-06 | 2007-10-24 | 华为技术有限公司 | A method for effective using the conference resources in the conference system |
| CN101582917A (en) * | 2009-06-18 | 2009-11-18 | 中兴通讯股份有限公司 | Method for dispatching MCU resource, business server and system |
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2009
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1642096A (en) * | 2004-01-08 | 2005-07-20 | 华为技术有限公司 | Multimedia conference convening method |
| CN1992878A (en) * | 2005-12-30 | 2007-07-04 | 中兴通讯股份有限公司 | Method for implementing resource scheduling of video conference |
| CN101060415A (en) * | 2006-06-06 | 2007-10-24 | 华为技术有限公司 | A method for effective using the conference resources in the conference system |
| CN101582917A (en) * | 2009-06-18 | 2009-11-18 | 中兴通讯股份有限公司 | Method for dispatching MCU resource, business server and system |
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