CN1604559A - Allocation method of distributed multipoint control unit in IP network multimedia conference system - Google Patents
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Abstract
This invention provides an arrangement method of IP multimedia meeting system distribution control units, which comprises the following steps: to align two or more multi-points control units in the multimedia meeting system; the said multi-point control units are arranged in the point or net range of the meeting system; to rank the point or net range of the said meeting system; to align at least one control unit to the point or range with high intensity after ranking.
Description
Technical field
The present invention relates to run on the multimedia conference system of IP operation network, the dispositions method of distribution type multi-point control unit in particularly a kind of IP network multimedia conference system.
Background technology
Multimedia conference system couples together a plurality of multimedia conferencing terminals that are positioned at the strange land by communication network, at multipoint control unit (Multi-point Control Unit, MCU) under the control, allow the participant communicate with multimedia modes such as image, voice-and-datas.Multimedia conference system comprise multimedia conferencing terminal, multipoint control unit and gatekeeper (Gatekeeper, GK).Multimedia conferencing terminal and other terminal, multipoint control unit and gatekeeper carry out multimedia communications such as two-way image, voice-and-data.Multipoint control unit provides the control to a plurality of multimedia conferencing terminals, and carries out the processing and the exchange of image, voice-and-data, supports the multipoint conference of three above terminal rooms.In general, multipoint control unit is handled (MP) two functional modules by multiple spot control (MC) and multiple spot and is constituted, multiple spot control provides the control to multipoint conference, and multiple spot is handled multi-channel video, audio frequency and data-signal are handled, and multipoint processor is controlled by multipoint controller.The gatekeeper realizes the management function of system, comprises user management, conference management, equipment control and Bandwidth Management etc.
In existing multimedia conference system (as shown in Figure 1), adopt centralized system to dispose multipoint control unit, therefore, there is following problem:
1. owing in multimedia conference system, dispose multipoint control unit with centralized system, the processing of multipoint control unit and the load of exchange are heavier, and be particularly more at system user, when carrying out a plurality of meeting simultaneously, this has just limited the scale of system, can't set up the large multimedia conference system;
2. when carrying out multipoint conference, the image that relevant participant terminal sends, voice and data are all concentrated to multipoint control unit, after process multiple spot processing module is carried out image and speech processes (speed, audio mixing etc. are handled, mixed to many pictures), be forwarded to each participant terminal again, shown in solid line among Fig. 1, certainly will cause multipoint control unit place node data flow bigger like this, take more bandwidth resources, particularly at the participant terminal quantity more for a long time, and on backbone network, may cause bigger flow, can cause network congestion when serious.
Summary of the invention
The present invention is directed to the above-mentioned defective that exists in the prior art, a kind of equilibrium that helps network traffics is provided, alleviate the bandwidth pressure of backbone network, thereby can improve the dispositions method of distribution type multi-point control unit in the IP network multimedia conference system of the capacity of video conferencing system and availability effectively.
Technical scheme of the present invention is as follows:
The dispositions method of distribution type multi-point control unit in the IP network multimedia conference system is characterized in that may further comprise the steps: dispose two or more multipoint control units in described multimedia conference system; Described multipoint control unit is deployed in node/network segment in the described multimedia conference system.
According to the distribution of service traffics, promptly be distributed in the conference terminal dense degree in each node/network segment, each the node/network segment in the described multimedia conference system is sorted, obtain sequence 1; The highest node/the network segment of conference terminal dense degree in the sequence 1 is disposed at least one multipoint control unit.
According to the operation quality requirement of each node/network segment, the node/network segment in the described multimedia conference system is sorted, obtain sequence 2; The highest node/the network segment of operation quality requirement in the sequence 2 is disposed at least one multipoint control unit.
Ordering according to described node/network segment, in the node/network segment of selected deployment multipoint control unit, carry out and to dispose multipoint control unit in proportion, described ratio meets following relational expression: the ratio perseverance of the conference terminal number in the multipoint control unit number in arbitrary node/network segment and this node/network segment is greater than the ratio of a multipoint control unit with the conference terminal number of the specified support of this multipoint control unit.
Described multipoint control unit makes a plurality of multipoint control unit synergies, with the multiple spot controlled function of the described multimedia conference system of common realization by gatekeeper's scheduling and control.
Backup each other between the described multipoint control unit, to improve the reliability of multiple spot controlled function.
Described conference terminal all disposes first-selected multipoint control unit and alternative multipoint control unit by the gatekeeper.
Adopt dynamic dispatching algorithm by the gatekeeper, the multipoint control unit resource of management and distribution system is to realize the load balancing of multipoint control unit.
Technique effect of the present invention is as follows:
Because the dispositions method of distribution type multi-point control unit in the IP network multimedia conference system of the present invention, the multipoint control unit of disposing in a multimedia conference system reaches two or more, and be deployed in the node/network segment in this multimedia conference system, that is to say and carried out the principle of disperseing to dispose MCU, MCU resource through part is deployed in the customer group zone, can realize exchange as far as possible in this locality so that be deployed with each interior participant terminal of node/network segment of MCU like this, reduce the bandwidth resources that take main line, the deployment of a plurality of MCU, can effectively solve the limited problem of capacity of single MCU, and make that the setting of MCU is more flexible, can MCU be set according to the size of each area business amount of multimedia conference system fully, like this, help the equilibrium of network traffics, alleviate the bandwidth pressure of backbone network, thereby can improve the capacity and the availability of video conferencing system effectively, be convenient to enlarge the scale of system to set up the large multimedia conference system.
Owing to dispose at least one multipoint control unit at the highest node/network segment of conference terminal dense degree, that is to say the principle of having carried out localized deployment MCU, MCU is arranged on the most intensive zone of user, can take the bandwidth resources of key circuit as few as possible, help reducing the flow on the backbone network, avoid causing network congestion.Certainly, according to this technical spirit, can be successively or select to dispose by the highest, inferior high ordering.
Because the node/network segment the highest to operation quality requirement disposed at least one multipoint control unit, this has just fully satisfied the availability requirement of responsible consumer to conference system.Certainly, according to this technical spirit, can be successively or select to dispose by the highest, inferior high ordering.
Dispose multipoint control unit owing in the node/network segment of selected deployment multipoint control unit, press extra proportion, like this, can be according to user's distribution situation, as much as possible the MCU resource is disperseed to be deployed into each intensive customer group zone, on the one hand the exchange of multi-point audio-video code stream is carried out in this locality, reduce unnecessary main line flow, reduced the bandwidth pressure of backbone network; The simultaneously also balanced load of MCU has improved system-wide exchange capacity, thereby has improved power system capacity, supports more concurrent user; Can the construction of increase system drop into though dispose more MCU, can save valuable trunk bandwidth resource, thereby on higher level, optimize system configuration, the elevator system overall benefit; Also for carrying out minimum bottleneck principle, make full use of valuable MCU resource, when promptly disposing MCU, as far as possible MCU is arranged on the node of network bandwidth bottleneck minimum, and be gatekeeper according to concurrent meeting in the system to the MCU demand, dynamically dispatch, distribute the MCU dispatching algorithm of MCU resource that adequate condition is provided.
Because a plurality of multipoint control units can act synergistically under gatekeeper's scheduling and control, multiple spot controlled function with common realization multimedia conference system, so just the effective operation to meeting provides effective support, can adapt to the participant terminal on distributing and the various big variation that quantitatively may occur.
Owing to can backup each other between a plurality of MCU, improve the availability of system.
Because each conference terminal is furnished with first-selected MCU and alternative MCU respectively, when first-selected MCU because of capacity, when failure and other reasons is unavailable, conference terminal can use alternative MCU, this has just further improved the availability of system.
Owing to adopt dynamic dispatching algorithm by the gatekeeper, the multipoint control unit resource of management and distribution system, realize the load balancing of multipoint control unit, this just can be so that GK reasonably dispatches, distributes the MCU resource according to preferred rational principle, make the dynamic-configuration of MCU resource optimize as far as possible, help providing efficient perfect, a reliable and stable multimedia conference system based on IP network.
Deployment principle about MCU:
Principle one: localized principle, this principle are meant when disposing MCU, as far as possible MCU are arranged on the most intensive zone of user.Can take the bandwidth resources of key circuit so as few as possible.
Principle two: distribution principle, this principle are meant when disposing MCU, should as much as possible the MCU resource be disperseed to be deployed into each customer group zone according to user's distribution situation.Can take the bandwidth resources of key circuit so as few as possible.Can the construction of increase system drop into though dispose more MCU, can save valuable trunk bandwidth resource, thereby on higher level, optimize system configuration, the elevator system overall benefit.
Principle three: minimum bottleneck principle, this principle are meant when disposing MCU, as far as possible MCU are arranged on the node of network bandwidth bottleneck minimum.Because the MCU resource is one of resource the most valuable in the visual communication system, should be owing to the mis-arrange of other resource has been wasted valuable MCU resource.
Dispatching algorithm about MCU:
The deployment principle of MCU is the principle that the user should follow when disposing MCU, and it is static relatively.The dispatching algorithm of MCU then be GK according to concurrent meeting in the system to the MCU demand, should follow principle when dynamically dispatching, distributing the MCU resource.GK reasonably dispatches, distributes the MCU resource according to these principles, makes the dynamic-configuration of MCU resource optimize as far as possible.
Dispatching algorithm one: distribution principle nearby, this principle is meant that GK will distribute the MCU resource nearby according to the distribution of each participant side.Can realize in this locality as far as possible like this exchange reducing the bandwidth resources that take main line.
Dispatching algorithm two: minimum of resources principle, this principle are meant that when the network bandwidth is enough a meeting is held as far as possible in a MCU, reduce taking of MCU resource.
Dispatching algorithm three: minimum key bandwidth principle, this principle are meant when each participant side is distributed in different nodes, adopt the mode of MCU cascade, reduce taking of key bandwidth.
Dispatching algorithm four: load balancing principle, this principle are meant as the available MCU of certain meeting when being a plurality of, are following under the prerequisite of mentioned above principle, select the lightest MCU of load.
Description of drawings
Fig. 1 for concentrate, the distributed architecture schematic diagram of the multimedia conference system of single MCU;
Fig. 2 is the distributed architecture schematic diagram of the multimedia conference system of a plurality of MCU of employing the inventive method;
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 2, the present invention is made up of a gatekeeper, a plurality of (more than or equal to 2) multipoint control unit MCU, a plurality of multimedia conferencing terminal.Gatekeeper and MCU and conference terminal establish a communications link, the management whole system.Each multimedia conferencing terminal at one's leisure with its under the gatekeeper set up two-way communication and be connected, during participating in a conference, except that connecting, also establish a communications link simultaneously with the MCU of this meeting of control with the gatekeeper.MCU controls each participant terminal during holding multipoint conference, and image, voice signal are exchanged and control.
In system shown in Figure 2, according to the distribution situation and the topology of networks of conference terminal, a plurality of MCU through parts are deployed in different node/network segments.For example, conference terminal is than comparatively dense in node/network segment 1, and responsible consumer is more, has therefore disposed a plurality of MCU; Certainly this mode only is applicable to too that conference terminal is than comparatively dense or single situation such as only responsible consumer is more; Conference terminal is more among node/network segment m, has disposed a MCU; Conference terminal is less among node/network segment n, does not dispose MCU.
According to the distribution situation of conference terminal, dispose a plurality of MCU in system, under gatekeeper's scheduling and control, these MCU realize the multiple spot controlled function of system jointly.In native system, the gatekeeper links to each other with MCU with its conference terminal of having jurisdiction over respectively, realizes system management function.Each conference terminal at one's leisure with its under the gatekeeper communicate and get in touch; During attending a meeting, except that keeping communicating to connect with affiliated gatekeeper, also the MCU with this conference terminal of control establishes a communications link.
Among the present invention,,,, on intensive each node of conference terminal, dispose a plurality of MCU (as shown in Figure 2) respectively in conjunction with the real topology of IP network according to the distribution situation of conference terminal by adopting the method for distributed treatment.Like this, on the one hand the exchange of multi-point audio-video code stream is carried out in this locality, reduced unnecessary main line flow; The simultaneously also balanced load of MCU has improved system-wide exchange capacity, thereby has improved power system capacity, supports more concurrent user.Adopt the method for MCU distribution process, solved the limited problem of capacity of single MCU, and made that the setting of MCU is more flexible.Can MCU be set according to the size of each area business amount of system.
Adopt between a plurality of MCU to backup each other, improved the availability of system.This meets the present invention adopts a plurality of MCU in a conference system technical spirit, is the specific implementation of performance synergistic function effect.
Each conference terminal is furnished with first-selected MCU and alternative MCU respectively.When first-selected MCU because of capacity, when failure and other reasons is unavailable, conference terminal can use alternative MCU.This meets the present invention adopts a plurality of MCU in a conference system technical spirit equally, also is the specific implementation of performance synergistic function effect.
Should be pointed out that the above execution mode can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Claims (8)
1.IP the dispositions method of distribution type multi-point control unit in the net multimedia conference system is characterized in that may further comprise the steps: in described multimedia conference system, dispose two or more multipoint control units; Described multipoint control unit is deployed in node/network segment in the described multimedia conference system.
2. the dispositions method of distribution type multi-point control unit in the IP network multimedia conference system according to claim 1, it is characterized in that further comprising the steps of: according to the distribution of service traffics, promptly be distributed in the conference terminal dense degree in each node/network segment, each node/network segment in the described multimedia conference system is sorted, obtain sequence 1; The highest node/the network segment of conference terminal dense degree in the sequence 1 is disposed at least one multipoint control unit.
3. the dispositions method of distribution type multi-point control unit in the IP network multimedia conference system according to claim 2, it is characterized in that further comprising the steps of: according to the operation quality requirement of each node/network segment, node/network segment in the described multimedia conference system is sorted, obtain sequence 2; The highest node/the network segment of operation quality requirement in the sequence 2 is disposed at least one multipoint control unit.
4. according to the dispositions method of distribution type multi-point control unit in the described IP network multimedia conference system in one of claim 2 or 3, it is characterized in that further comprising the steps of: according to the ordering of described node/network segment, in the node/network segment of selected deployment multipoint control unit, carry out and to dispose multipoint control unit in proportion, described ratio meets following relational expression: the ratio perseverance of the conference terminal number in the multipoint control unit number in arbitrary node/network segment and this node/network segment is greater than the ratio of a multipoint control unit with the conference terminal number of the specified support of this multipoint control unit.
5. the dispositions method of distribution type multi-point control unit in the IP network multimedia conference system according to claim 4, it is characterized in that further comprising the steps of: described multipoint control unit is by gatekeeper's scheduling and control, make a plurality of multipoint control unit synergies, with the multiple spot controlled function of the described multimedia conference system of common realization.
6. the dispositions method of distribution type multi-point control unit in the IP network multimedia conference system according to claim 5 is characterized in that further comprising the steps of: backup each other between the described multipoint control unit, to improve the reliability of multiple spot controlled function.
7. the dispositions method of distribution type multi-point control unit in the IP network multimedia conference system according to claim 6 is characterized in that further comprising the steps of: described conference terminal all disposes first-selected multipoint control unit and alternative multipoint control unit by the gatekeeper.
8. the dispositions method of distribution type multi-point control unit in the IP network multimedia conference system according to claim 7, it is characterized in that further comprising the steps of: adopt dynamic dispatching algorithm by the gatekeeper, the multipoint control unit resource of management and distribution system is to realize the load balancing of multipoint control unit.
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| CN101741832A (en) * | 2008-11-25 | 2010-06-16 | 宝利通公司 | Method and system for dispatching received sessions between a plurality of instances of an application using the same ip port |
| WO2010111867A1 (en) * | 2009-03-31 | 2010-10-07 | 华为终端有限公司 | Managing method for distributed multipoint conference systems, apparatus and system thereof |
| CN101931782A (en) * | 2010-08-25 | 2010-12-29 | 中兴通讯股份有限公司 | Flow processing method and device for multipoint control unit (MCU) |
| CN102098314A (en) * | 2011-02-28 | 2011-06-15 | 北京邮电大学 | Multimedia conference realizing method and multimedia conference system |
| CN101453346B (en) * | 2007-12-07 | 2011-06-29 | 西安电子科技大学 | Multi-point layered meeting control method in IMS system |
| CN102801953A (en) * | 2012-07-26 | 2012-11-28 | 苏州科达科技有限公司 | Video code stream forwarding control method |
| CN102916904A (en) * | 2012-11-01 | 2013-02-06 | 浙江省电力公司 | Power communication dispatching method |
| CN106454205A (en) * | 2016-11-29 | 2017-02-22 | 中国电子科技集团公司第二十八研究所 | Visual consultation system |
| EP3232660A1 (en) * | 2016-04-12 | 2017-10-18 | Pexip AS | Improvements in multimedia conferencing |
| CN110062260A (en) * | 2019-04-23 | 2019-07-26 | 湖南楚风科技有限责任公司 | A kind of distributed tones video control system |
| CN110570614A (en) * | 2018-06-05 | 2019-12-13 | 杭州海康威视数字技术股份有限公司 | Video monitoring system and intelligent camera |
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| CN1146232C (en) * | 1999-08-09 | 2004-04-14 | 华为技术有限公司 | Method for implementing multi-stage cascade of multi-point control units in video conferencing system |
| CN1258918C (en) * | 2000-02-01 | 2006-06-07 | 中兴通讯股份有限公司 | Method for increasing capacity of video conference system |
| CN1147806C (en) * | 2002-08-20 | 2004-04-28 | 西安交通大学 | Multimedia real-time lessons-giving system based on IP web |
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| CN101453346B (en) * | 2007-12-07 | 2011-06-29 | 西安电子科技大学 | Multi-point layered meeting control method in IMS system |
| CN101741832B (en) * | 2008-11-25 | 2013-11-06 | 宝利通公司 | Method and system for dispatching received sessions between a plurality of instances of an application using the same ip port |
| CN101741832A (en) * | 2008-11-25 | 2010-06-16 | 宝利通公司 | Method and system for dispatching received sessions between a plurality of instances of an application using the same ip port |
| WO2010111867A1 (en) * | 2009-03-31 | 2010-10-07 | 华为终端有限公司 | Managing method for distributed multipoint conference systems, apparatus and system thereof |
| CN101515948B (en) * | 2009-03-31 | 2012-04-25 | 华为终端有限公司 | Management method, management device and management system in distributed multi-point conference system |
| CN101931782A (en) * | 2010-08-25 | 2010-12-29 | 中兴通讯股份有限公司 | Flow processing method and device for multipoint control unit (MCU) |
| WO2012024970A1 (en) * | 2010-08-25 | 2012-03-01 | 中兴通讯股份有限公司 | Traffic processing method and equipment for multipoint control unit |
| CN102098314B (en) * | 2011-02-28 | 2014-10-29 | 北京邮电大学 | Multimedia conference realizing method and multimedia conference system |
| CN102098314A (en) * | 2011-02-28 | 2011-06-15 | 北京邮电大学 | Multimedia conference realizing method and multimedia conference system |
| CN102801953A (en) * | 2012-07-26 | 2012-11-28 | 苏州科达科技有限公司 | Video code stream forwarding control method |
| CN102801953B (en) * | 2012-07-26 | 2014-10-29 | 苏州科达科技股份有限公司 | Video code stream forwarding control method |
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| CN106454205A (en) * | 2016-11-29 | 2017-02-22 | 中国电子科技集团公司第二十八研究所 | Visual consultation system |
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| CN110570614B (en) * | 2018-06-05 | 2022-03-04 | 杭州海康威视数字技术股份有限公司 | Video monitoring system and intelligent camera |
| CN110062260A (en) * | 2019-04-23 | 2019-07-26 | 湖南楚风科技有限责任公司 | A kind of distributed tones video control system |
| CN110062260B (en) * | 2019-04-23 | 2021-10-22 | 湖南楚风科技有限责任公司 | Distributed audio and video control system |
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