CN101710962A - 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 standard definition and described the composition and the protocols of the video conferencing system that is carried on circuit-switched network H.320.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 finishing the compressed encoding and the decoding of medium such as sound, video, and the communication function of network.Terminal connects input/output peripherals such as microphone, sound equipment, camera, display, is used for finishing the input and output of sound, video.Terminal comprises user's input interface, as Infrared remote controller, the user by input interface to terminal input instruction and information.Terminal is responsible for and the other side's terminal (or MCU, gateway) connects, and 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 finishing 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 of several roads terminal of the volume maximum of the synthetic general selection input of audio mixing mixes.For video media stream, MCU can send the single-image video flowing of 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 finishing between the different networks 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 finishes 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 to the IP address of MCU equipment to the gatekeeper, terminal is used the IP address of resolving to set up to call out to connect.The main processing signaling of gatekeeper is not generally handled Media Stream.
Ietf definition and having 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 finished the route of calling.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 class user priority guarantees conferencing resource, 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 as follows:
A kind of method of distributing video conference resources comprises:
Be meeting reserved media processing resources and default conference reservation match information;
Obtain conference reservation information, described conference reservation information comprises the relevant information of conference type information and terminal;
Judge according to the conference reservation match information whether described meeting and described terminal meet the condition of using reserved media processing resources;
If then be the media processing resources that described meeting distributes described reservation.
A kind of device of distributing video conference resources comprises:
Module is set, is used to meeting reserved media processing resources and default conference reservation match information;
Acquisition module is used to obtain conference reservation information, and described conference reservation information comprises the relevant information of conference type information and terminal;
Judge module is used for judging according to the conference reservation match information whether described meeting and described 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 described reservation for described meeting.
In embodiments of the present invention, pass through to be meeting reserved media processing resources and default conference reservation match information; Obtain conference reservation information, described conference reservation information comprises the relevant information of conference type information and terminal; Judge according to the conference reservation match information whether described meeting and described terminal meet the condition of using reserved media processing resources; If, the media processing resources of then distributing described reservation for described 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 structure chart of the conference reservation success that provides of the embodiment of the invention;
Fig. 5 is the another kind of structure chart of the conference reservation success that provides of the embodiment of the invention;
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 default conference reservation match information; Obtain conference reservation information, described conference reservation information comprises the relevant information of conference type information and terminal; Judge according to the conference reservation match information whether described meeting and described terminal meet the condition of using reserved media processing resources; If, then be the media processing resources that described meeting distributes described 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 solution of the present invention is elaborated.
The embodiment of the invention provides a kind of method of distributing video conference resources, as shown in Figure 1, comprising:
101, be meeting reserved media processing resources and default conference reservation match information;
102, obtain conference reservation information, this conference reservation information comprises the relevant information of 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 default rank; The terminal match information comprises: termination number is that the video format of preset value or terminal support is higher than pre-set level.
Further, this meeting attribute is that the relation that high-level meeting and meeting video format are higher than between the default rank comprises following at least a kind of:
With or and not.
Further, this termination number is that the relation that the video format of preset value and terminal support is higher than between the pre-set level comprises following at least a kind of:
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, if both all can use, judge that then this meeting and this terminal meet the condition of using reserved media processing resources.
Below in conjunction with concrete example the embodiment of the invention is described in detail, but this example does not constitute limiting the scope of the 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, can further be decomposed into assemblies such as P-CSCF, I-CSCF, S-CSCF in the IMS standard, CSCF is used for finishing endpoint registration, calls out route, business is triggered to functions such as application server.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 of 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 the MCU resource of one group of special use 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 as 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.263CIF |
| 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 judges that according to the meeting matched rule this meeting can use the Rh resource; Judge terminal 1001 according to the terminal matched rule, terminal 1002 is used Rh group MCU resource, terminal 2001, and terminal 2002 is used the MCU resource of R1 group.
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 check of previously defined meeting matched rule and terminal matched rule.In the present embodiment, provide simple computational methods.The conference applications server selects a MCU to be used for handling high definition conference according to matched rule from the Rh group and terminal inserts, 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.Keep a cascade port resource in addition on MCU1, 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
Below the content of above-mentioned table 3 is done explanation:
MCU1 need connecting terminal 1001, terminal 1002 and and MCU2 carry out cascade, so take 3 port resources, terminal 1001 and terminal 1002 adopt the 2Mbps call-rate, 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 to carry out format conversion between them, need to use the Video processing resource, here suppose that carrying out one the tunnel H.264720p arrives the H.263 mutual conversion between the CIF, needs 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, do not need between them to carry out format conversion, 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 schematic diagram for the successful meeting of reservation.
Second example
In this example, customer requirements is supported the VIP conference type, the only open a 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 described in detail:
301, the conference applications server is collected the MCU resource information, and particular content can not repeat them here referring to example 1 corresponding steps.
302, the conference applications server divides into groups the MCU resource, and particular content can not repeat them here 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: all terminals can be used the resource of Rh group and R1 group;
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.263CIF |
| 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, terminal 1002, terminal 2001, terminal 2002 can be used Rh group MCU resource or R1 group MCU resource.
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
Below the content of above-mentioned table 5 is done explanation:
MCU1 needs connecting terminal 1001, terminal 1002, terminal 2001, terminal 2002, so take 4 port resources, terminal 1001 and terminal 1002 adopt the 2Mbps call-rate, terminal 2001 and terminal 2002 adopt the 384Kbps call-rate, so the total bandwidth is 4.768Mbps, terminal 1001 and terminal 1002 adopt H.264 720p encoding and decoding, and terminal 2001, terminal 2002 cascade ports adopt H.263 CIF encoding and decoding, need to carry out format conversion between them, need to use the Video processing resource, here 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.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 schematic diagram 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, as shown in Figure 6, comprising:
Module is set, is used to meeting reserved media processing resources and default conference reservation match information;
Acquisition module is used to obtain conference reservation information, and this conference reservation information comprises the relevant information of 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 default rank; The terminal match information comprises: termination number is that the video format of preset value or terminal support is higher than pre-set level.
Further, this meeting attribute that the module setting is set is that the relation that high-level meeting and meeting video format are higher than between the default rank comprises following at least a kind of:
With or and not.
Further, the relation that is higher than between the pre-set level of this termination number that module setting is set video format that is preset value and terminal support comprises following at least a kind of:
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 default conference reservation match information; Obtain conference reservation information, described conference reservation information comprises the relevant information of conference type information and terminal; Judge according to the conference reservation match information whether described meeting and described terminal meet the condition of using reserved media processing resources; If, then be the media processing resources that described meeting distributes described 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 disclosed form of this paper, should not regard eliminating as to other embodiment, and can be used for various other combinations, modification and environment, and can in invention contemplated scope described herein, change by 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 (10)
1. the method for a distributing video conference resources is characterized in that, comprising:
Be meeting reserved media processing resources and default conference reservation match information;
Obtain conference reservation information, described conference reservation information comprises the relevant information of conference type information and terminal;
Judge according to the conference reservation match information whether described meeting and described terminal meet the condition of using reserved media processing resources;
If then be the media processing resources that described meeting distributes described reservation.
2. the method for claim 1, it is characterized in that, described conference reservation match information comprises meeting match information and terminal match information, and wherein, described meeting match information comprises: the meeting attribute is that high-level meeting or meeting video format are higher than default rank; The terminal match information comprises: termination number is that the video format of preset value or terminal support is higher than pre-set level.
3. method as claimed in claim 2 is characterized in that, described meeting attribute is that the relation that high-level meeting, meeting video format are higher than between the default rank comprises following at least a kind of:
With or and not.
4. method as claimed in claim 2 is characterized in that, described termination number is that the relation that the video format of preset value, terminal support is higher than between the pre-set level comprises following at least a kind of:
With or and not.
5. method as claimed in claim 2 is characterized in that, judges that according to the conference reservation match information whether described meeting and described terminal meet the condition of using reserved media processing resources, comprising:
Judge according to the meeting matched rule whether described meeting can use the media processing resources of reservation, judge according to the terminal matched rule whether described terminal can use the media processing resources of reservation, if both all can use, judge that then described meeting and described terminal meet the condition of using reserved media processing resources.
6. 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 default conference reservation match information;
Acquisition module is used to obtain conference reservation information, and described conference reservation information comprises the relevant information of conference type information and terminal;
Judge module is used for judging according to the conference reservation match information whether described meeting and described 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 described reservation for described meeting.
7. device as claimed in claim 6, it is characterized in that, the described described conference reservation match information that the module setting is set comprises meeting match information and terminal match information, and wherein, described meeting match information comprises: the meeting attribute is that high-level meeting or meeting video format are higher than default rank; The terminal match information comprises: termination number is that the video format of preset value or terminal support is higher than pre-set level.
8. device as claimed in claim 7 is characterized in that, the described meeting attribute that the module setting is set is that the relation that high-level meeting, meeting video format are higher than between the default rank comprises following at least a kind of:
With or and not.
9. device as claimed in claim 7 is characterized in that, the relation that the video format that the described termination number that the module setting is set is preset value, terminal support is higher than between the pre-set level comprises following at least a kind of:
With or and not.
10. device as claimed in claim 7, it is characterized in that, described judge module specifically is used for judging according to the meeting matched rule whether described meeting can use the media processing resources of reservation, judge according to the terminal matched rule whether described terminal can use the media processing resources of reservation, if both all can use, judge that then described meeting and described terminal meet the condition of using reserved media processing resources.
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