CN1620135A - Conference television system and method of realizing maintaining business in said system - Google Patents
Conference television system and method of realizing maintaining business in said system Download PDFInfo
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- 238000012545 processing Methods 0.000 claims description 10
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Abstract
A method to realize business holding in television conference. Said system contains communication network and conference television equipment and network status monitoring subsystem both connected with communication. Said method contains (a), activating network status monitoring subsystem after conference convening, (b), the network status monitoring subsystem monitoring the communication network in television conference system, (c), network status monitoring subsystem activating abnormal circumstance process module if detecting abnormal circumstance occurring , otherwise not doing any process and backing to step (b). Said invention also provides a relative television conference system.
Description
Technical field
The present invention relates to the multi-media communication technical field, relate in particular to a kind of TV conference system and in this system, realize the professional method that keeps.
Background technology
Can realize the interchange of " face-to-face " because video conferencing can make by communication network between the long-distance user, increase the participation effect of meeting and the participant's that furthered distance greatly, and then obtained application more and more widely.
General TV conference system is made up of multipoint control unit (MCU), terminal and communication network, and wherein communication network can be any digital network, as existing ISDN, DDN, IP etc.Video conferencing is as a kind of real-time interactive application, to the performance of network and quality (as the error rate, the slip of ISDN; The packet loss of IP, time delay and shake etc.) relative higher requirement arranged.But in existing TV conference system, the ability that adapts to network as the video conferencing equipment (MCU and terminal) of user side is relatively poor, especially when communication network occur simultaneously such as: during abnormal conditions such as slip, packet loss, time delay, communication stability and look audio quality all can variation, even make meeting can not be normally, successfully carry out.
As seen, how to design a kind of TV conference system so that meeting occur at the same time under the multiple abnormal conditions still can be stably, operation normally is the problem that the industry utmost point need solve.
Summary of the invention
The invention provides a kind of TV conference system and in this system, realize the professional method that keeps, can not occur at the same time under the multiple abnormal conditions stably to solve existing TV conference system, the problem of meeting normally.
For addressing the above problem, the invention provides following technical scheme:
A kind of method that in TV conference system, realizes professional maintenance, described system comprises communication network, video conferencing equipment that is connected with communication network and network state monitoring subsystem, this method is specially: A, startup network state monitoring subsystem after meeting is held; B, network state monitoring subsystem are monitored the communication network in the TV conference system; C, network state monitoring subsystem determine whether to enable the abnormal conditions processing module according to testing result, if that is: detect and have abnormal conditions to occur in the communication network, then enable the abnormal conditions processing module, there are not abnormal conditions to occur in the communication network if detect, then do not do any processing, return the B step.
Described C step is specially:
If error code is then enabled anti-error code module, with the influence that reduces error code with from the error code state, recover as quickly as possible;
If Network Packet Loss is then enabled anti-packet loss module, with the influence that reduces packet loss with from the packet loss state, recover as quickly as possible;
If the anti-jitter module is then enabled in network jitter,, provide video/audio code stream output stably to eliminate the influence of the shake that network produces as far as possible;
If the circuit slip is then enabled the slip adjusting module, do not interrupt so that use;
If the calling on a passage or a plurality of passage disconnects, then enable the disconnection recalling module;
If circuit is unavailable or quality descends, then enable automatic reduction module, call out the speed of connection or carry out self adaptation reduction application rate in the process with suitable reduction in application;
If big error code or line interruption appear in voice channel place circuit, then enable voice channel automatic switchover module, with the voice transfer channel change to other line channel good for use;
If video conferencing equipment access point switching equipment is not supported no data available carrying route in the calling of Data-carrying or this time call network, then enable data/voice and call out the hybrid junction module, so that use voice bearer to call out.
A kind of video conferencing device systems comprises communication network, the multipoint control unit that is connected with communication network (MCU), terminal, and this system also comprises:
The network state monitoring subsystem;
Automatically the reduction of speed module is connected with described network monitor subsystem, reduces automatically under the control of network monitor subsystem and calls out speed or the application rate that connects;
The disconnection recalling module is connected with automatic reduction of speed module with described network monitor subsystem, under the control of network monitor subsystem, calls out again and is communicated with the circuit of having been hung up or takes automatic reduction of speed to use speed to adapt to;
Anti-packet loss module is connected with described network monitor subsystem, reduces the influence of packet loss and from the packet loss recovering state under the control of network monitor subsystem;
The anti-jitter module is connected with described network monitor subsystem, eliminates the influence of the shake of network generation under the control of network monitor subsystem;
The slip adjusting module is connected with described network monitor subsystem, calibrates or recomputate interchannel relative time delay under the control of network monitor subsystem;
Anti-error code module is connected with described network monitor subsystem, in the influence of the control decline low bit error of network monitor subsystem with from the error code recovering state;
The dynamic handover module of voice channel is connected with described network monitor subsystem, switches on other normal line channels at the voice channel that will occur under the control of network monitor subsystem on big error code or the disrupted circuit;
Data/voice is called out the hybrid junction module, is connected with described network monitor subsystem, under the control of network monitor subsystem, uses voice bearer to call out when the Data-carrying call failure.
The present invention has can improve call completing rate, fast quick-recovery and do not interrupt characteristics such as applications when unusual, thus can be in network performance and degradation, instability, break down or guarantee that the video conferencing application normally carries out under with regard to bad situation originally.
Description of drawings
Fig. 1 is a TV conference system structure chart of the present invention;
The annexation figure of Fig. 2 network state monitoring subsystem and each module;
Fig. 3 is a flow chart of the present invention.
Embodiment
Consult shown in Figure 1ly, TV conference system comprises communication network, multipoint control unit (MCU), MCU turnkey console and terminal.MCU and terminal constitute video conferencing equipment.In this system, also comprise network state monitoring subsystem and a plurality of modules that are connected with this system (not shown among Fig. 1, as to see also Fig. 2).The user can hold a meeting by turnkey console/terminal, flows by sending and receive audio-video frequency media by communication network between MUC and the terminal.
Consult shown in Figure 2ly, the network state monitoring subsystem is connected with anti-error code module, anti-packet loss module, anti-jitter module, slip adjusting module, disconnection recalling module, reduction of speed module, the dynamic handover module of voice channel and data/voice are called out the hybrid junction module automatically.The network state monitoring subsystem is notified corresponding module when situation such as detect network performance and degradation, instability or break down, handled to reach professional keep (Servicelock) by this module, does not promptly interrupt using.Being described in detail as follows of each module:
Anti-error code module: when owing to the network reason, as circuit interference, network slip, network congestion, network equipment failure etc., cause data in transmission course, to be modified or lose, all show as for user side equipment video conferencing equipment and error code occurs, this moment is because the mistake of data and disappearance will cause looking audio quality and effect descends rapidly.In order to make that offering user's acceptable under error condition most possibly looks audio frequency effect, anti-error code module can adopt data redundancy, error detection decoding methods such as error correction, application refresh frame, reduce the influence of error code as wide as possible and from the error code state, recover as quickly as possible.
Anti-packet loss module: under application model H.323, when owing to network reason (as network congestion, bandwidth resources not enough etc.) causes packet to be lost in transmission course, this moment is because the disappearance of data will cause video conferencing equipment to look audio quality and effect descends rapidly.In order to make that offering user's acceptable under packet drop most possibly looks audio frequency effect, video conferencing equipment can adopt data redundancy, decoding methods such as application refresh frame, Discarded Packets compensation, reduces the influence of packet loss as wide as possible and recovers from the packet loss state as quickly as possible.
Anti-jitter module: under application model H.323, when owing to network reason (as network congestion, bandwidth resources not enough etc.) causes packet to be delayed time in transmission course, and the time of time-delay is unequal, thereby the video/audio code stream speed that causes receiving terminal to receive is sometimes fast and sometimes slow, and the time synchronizing relation of looking simultaneously between the audio frequency also obtains destroying.In this case, the looking audio quality and effect and can descend rapidly of video conferencing, even the user can't be stood.In order to overcome this situation, the shielding network jitter, that video conferencing equipment can adopt is data cached, replenish, measure in advance method such as bag automatically, eliminates the influence of the shake that network produces as much as possible, and video/audio code stream output stably is provided.
Slip adjusting module: for the video conferencing equipment that uses a plurality of passage binding access networks, the route of each passage process in network may be inequality, when the transfer of data time-delay of wherein one or more passages on route changes, to cause the error in data on the whole from a plurality of passages this moment in interchannel relative time delay thereupon changing, if video conferencing equipment do not do any processing, will cause the video/audio mistake and audiovideo is all unavailable.The method that at this moment can adopt slip to adjust promptly sends certain regular test data on each passage, calibrate or recomputate each interchannel relative time delay, does not interrupt to guarantee that use this moment.
Disconnection recalling module: for the video conferencing equipment that uses a plurality of passage binding access networks, (calling out the reason of being hung up may be a lot: too big owing to loading as the network equipment as if the disconnection of the calling on one of them passage or a plurality of passage, to communicate by letter partly on one's own initiative for the purpose that guarantees other important communication that route splits off or since the calling that the various situations such as unusual of video conferencing equipment itself cause hang up), type has only two kinds though reason is a lot: recoverable and expendable, for recoverable situation, the circuit that video conferencing equipment has then been hung up these callings is exhaled again to lead to and is realized that application rate remains unchanged as far as possible; And, then take the method for automatic reduction of speed to realize not interrupting to guarantee to use under these two kinds of abnormal conditions to using the self adaptation of speed for expendable situation.
Automatic reduction of speed module:, divide following two kinds of situations when the unavailable or automatic application rate that reduces of quality decline of circuit occurring:
(1) in the calling procedure of setting up the connection of video conferencing equipment room, if the application rate of being applied for exceeds current circuit upper capability, during as the ISDN mode, there are one or more passages to exhale obstructed or exhale and to use the requirement that causes to reach application rate after logical, or other certain restriction, during as the IP mode, gatekeeper (Gatekeeper) or other H.323 this time of device-restrictive calling can not reach the requirement of application rate), then reduce this time and call out the speed that connects, self adaptation drops to suitable level with the speed of this application, call out the success rate that connects to improve, try one's best and setting up the calling connection in such cases, guarantee normally carrying out of follow-up video conferencing application.
(2) set up, use in the ongoing process in the connection of video conferencing equipment room, cause some passages to be called out for various reasons disconnecting and irrecoverable (during as the ISDN mode, have one or more passages to call out to be disconnected and can not the recall success) or network when corresponding service can not be provided (during as the IP mode, application rate exceeds the ability of line bandwidth), then carry out self adaptation reduction application rate in the process, do not interrupt to guarantee ongoing application this moment in application.
The dynamic handover module of voice channel: under application model H.320, when big error code or line interruption appear in voice channel place circuit, voice channel is switched on other the line channel good for use, realize that voice channel does not interrupt, when network is unusual, still can proceed the interchange of voice to guarantee the user.
Data/voice is called out the hybrid junction module: when video conferencing equipment is used by isdn network, need carry out call setup earlier and connect, and then connect the interactive application of enterprising line data, voice and image at this.Under the normal condition, video conferencing equipment should use the Data-carrying ability of ISDN to call out, but when video conferencing equipment access point switching equipment do not support the calling of Data-carrying or this time in the call network during no data available carrying route (this be owing to the equipment that has in the isdn network do not support data loading service or not the configuration data bearer service and only disposed the voice bearer business), will cause non-answered call.At this moment can when the Data-carrying call failure, use voice bearer to carry out call attempt,, try one's best and setting up the calling connection in such cases, guarantee normally carrying out of follow-up video conferencing application to improve calling ratio of success.
The method that in TV conference system, realizes professional maintenance provided by the invention, its main implementation procedure is: A, startup network state monitoring subsystem after meeting is held; B, network state monitoring subsystem are monitored the communication network in the TV conference system; C, network state monitoring subsystem determine whether to enable the abnormal conditions processing module according to testing result, if that is: detect and have abnormal conditions to occur in the communication network, then enable the abnormal conditions processing module, there are not abnormal conditions to occur in the communication network if detect, then do not do any processing, return the B step.
See also Fig. 3 below, the specific implementation process that business keeps is described.
Step 10: the network state monitoring subsystem detects the state of communication network.
Step 20: in transmission, lose if detect data, be that error code appears in user side video conferencing equipment, then notify anti-error code module to carry out the operation of anti-error code, promptly adopt data redundancy, error detection/correction, application refresh frame from the error code state or/and other decoding methods reduce the influence of error code and recover as quickly as possible.
Step 30: cause video conferencing equipment to look audio quality if detect data-bag lost and effect descends rapidly, be video conferencing equipment look audio quality and effect descends rapidly, then notify anti-packet loss module to carry out the operation of anti-packet loss, promptly adopt data redundancy, application refresh frame, Discarded Packets compensation or other decoding methods to reduce the influence of packet loss and from the packet loss state, recover as quickly as possible.
Step 40: packet is delayed time and delay time does not wait if detect, then notify the anti-jitter module to carry out the anti-jitter operation, promptly adopt data cached, automatically replenish, measure in advance the influence that bag or additive method are eliminated the shake that network produces as far as possible, video/audio code stream output stably is provided.
Step 50: change if detect the transfer of data time-delay of wherein one or more passages on route of the video conferencing equipment that uses a plurality of passage binding access networks, then notify the slip adjusting module to carry out the slip adjustment, promptly adopt the slip method of adjustment, promptly on each passage, send the test data of certain rule, calibrate or recomputate each interchannel relative time delay, do not interrupt so that use.
Step 60: disconnect if detect one of them passage or the calling on a plurality of passage of the video conferencing equipment that uses a plurality of passage binding access networks, then notify the disconnection recalling module, realize that for recovering to call out to adopt to exhale again to lead to application rate remains unchanged as far as possible, for expendable calling, then take the method for automatic reduction of speed to realize to using the self adaptation of speed.
Step 70: if detect in the calling procedure of setting up the connection of video conferencing equipment room, the application rate that occurs being applied for exceeds current circuit upper capability or is restricted, occur between the television equipment that has perhaps connected that passage call out to disconnect and irrecoverable or network can not provide respective service, then notify automatic reduction of speed module to reduce and call out the speed that connects, or carry out self adaptation reduction application rate in the process in application.
Step 80: big error code or line interruption occur if detect voice channel place circuit, then notify voice channel dynamic handover module, voice channel is switched on other the line channel good for use.
Step 90: do not support no data available carrying route in the calling of Data-carrying or this time call network if detect video conferencing equipment access point switching equipment, notification data/audio call hybrid junction module then, when the Data-carrying call failure, use voice bearer to carry out call attempt, to improve calling ratio of success.
Claims (7)
1, a kind of method that in TV conference system, realizes professional maintenance, described system comprises communication network, video conferencing equipment that is connected with communication network and network state monitoring subsystem is characterized in that this method is:
A, hold the back in meeting and start the network state monitoring subsystem;
B, network state monitoring subsystem are monitored the communication network in the TV conference system;
C, network state monitoring subsystem determine whether to enable the abnormal conditions processing module according to testing result, if that is: detect and have abnormal conditions to occur in the communication network, then enable the abnormal conditions processing module, there are not abnormal conditions to occur in the communication network if detect, then do not do any processing, return the B step.
2, the method for claim 1 is characterized in that: described step C specifically comprises:
If error code is then enabled anti-error code module, with the influence that reduces error code with from the error code state, recover as quickly as possible;
If Network Packet Loss is then enabled anti-packet loss module, with the influence that reduces packet loss with from the packet loss state, recover as quickly as possible;
If the anti-jitter module is then enabled in network jitter,, provide video/audio code stream output stably to eliminate the influence of the shake that network produces as far as possible;
If the circuit slip is then enabled the slip adjusting module, do not interrupt so that use;
If the calling on a passage or a plurality of passage disconnects, then enable the disconnection recalling module;
If circuit is unavailable or quality descends, then enable automatic reduction module, call out the speed of connection or carry out self adaptation reduction application rate in the process with suitable reduction in application;
If big error code or line interruption appear in voice channel place circuit, then enable voice channel automatic switchover module, with the voice transfer channel change to other line channel good for use;
If video conferencing equipment access point switching equipment is not supported no data available carrying route in the calling of Data-carrying or this time call network, then enable data/voice and call out the hybrid junction module, so that use voice bearer to call out.
3, method as claimed in claim 2 is characterized in that, enables anti-error code module and is meant that this module adopts data redundancy, error detection/correction, application refresh frame or other decoding methods to handle and looks audio medium stream.
4, method as claimed in claim 2 is characterized in that, enables anti-packet loss module and is meant that adopting data redundancy, application refresh frame, Discarded Packets compensation or other decoding methods to handle by this module looks audio medium stream.
5, method as claimed in claim 2 is characterized in that, enable the anti-jitter module be meant by this module adopt data cached, replenish or measure in advance the bag method automatically and handle and look audio medium stream.
6, method as claimed in claim 2, it is characterized in that, enable the disconnection recalling module and be meant that this module realizes that for recovering to call out to adopt to exhale again to lead to application rate remains unchanged as far as possible, for expendable calling, then take the method for automatic reduction of speed to realize to using the self adaptation of speed.
7, a kind of video conferencing device systems, the video conferencing equipment that comprises communication network, constitutes by multipoint control unit (MCU) and terminal; It is characterized in that this system also comprises:
The network state monitoring subsystem, this subsystem is connected with communication network;
Automatically the reduction of speed module is connected with described network monitor subsystem, reduces automatically under the control of network monitor subsystem and calls out speed or the application rate that connects;
The disconnection recalling module is connected with automatic reduction of speed module with described network monitor subsystem, under the control of network monitor subsystem, calls out again and is communicated with the circuit of having been hung up or takes automatic reduction of speed to use speed to adapt to;
Anti-packet loss module is connected with described network monitor subsystem, reduces the influence of packet loss and from the packet loss recovering state under the control of network monitor subsystem;
The anti-jitter module is connected with described network monitor subsystem, eliminates the influence of the shake of network generation under the control of network monitor subsystem;
The slip adjusting module is connected with described network monitor subsystem, calibrates or recomputate interchannel relative time delay under the control of network monitor subsystem;
Anti-error code module is connected with described network monitor subsystem, in the influence of the control decline low bit error of network monitor subsystem with from the error code recovering state;
The dynamic handover module of voice channel is connected with described network monitor subsystem, switches on other normal line channels at the voice channel that will occur under the control of network monitor subsystem on big error code or the disrupted circuit;
Data/voice is called out the hybrid junction module, is connected with described network monitor subsystem, under the control of network monitor subsystem, uses voice bearer to call out when the Data-carrying call failure.
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| CNB2003101167761A CN100428793C (en) | 2003-11-21 | 2003-11-21 | Conference television system and method of realizing maintaining business in said system |
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| CNB2003101167761A CN100428793C (en) | 2003-11-21 | 2003-11-21 | Conference television system and method of realizing maintaining business in said system |
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| CN100384161C (en) * | 2005-12-31 | 2008-04-23 | 华为技术有限公司 | Method and system for processing service behaviour abnormal |
| CN101764826A (en) * | 2010-02-23 | 2010-06-30 | 中兴通讯股份有限公司 | Method and system for clearing exceptional conference |
| CN102036050A (en) * | 2010-10-11 | 2011-04-27 | 中兴通讯股份有限公司 | Automatic recall terminal on-line method and system for video conference |
| CN103152545A (en) * | 2011-12-07 | 2013-06-12 | Polycom通讯技术（北京）有限公司 | Error correction request processing method, video server and video conference system |
| CN104753811A (en) * | 2013-12-30 | 2015-07-01 | 中国移动通信集团公司 | Streaming medium service optimizing method, device and system |
| CN105680982A (en) * | 2014-11-21 | 2016-06-15 | 中兴通讯股份有限公司 | Data transmission control method, receiving end, sending end and system |
| CN108965220A (en) * | 2017-11-29 | 2018-12-07 | 北京视联动力国际信息技术有限公司 | A kind of method and system that Conference control power is synchronous |
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| JP3841256B2 (en) * | 2000-02-15 | 2006-11-01 | 三菱電機株式会社 | Communication system, communication method, and transmission terminal |
| JP2001244944A (en) * | 2000-02-25 | 2001-09-07 | Hitachi Ltd | Network system and communication method thereof |
| JP2002057699A (en) * | 2000-08-11 | 2002-02-22 | Nec Corp | Packet transmission method, packet transmission method, and recording medium |
| KR100487121B1 (en) * | 2002-03-19 | 2005-05-03 | 삼성전자주식회사 | System for Service Quality Administration of Asymmetric Digital Subscriber Line |
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| CN101764826B (en) * | 2010-02-23 | 2015-09-16 | 中兴通讯股份有限公司 | A kind of method and system of clearing up exceptional conference |
| WO2011103725A1 (en) * | 2010-02-23 | 2011-09-01 | 中兴通讯股份有限公司 | Method and system for eliminating abnormal conference |
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| CN102036050B (en) * | 2010-10-11 | 2014-10-22 | 中兴通讯股份有限公司 | Automatic recall terminal on-line method and system for video conference |
| CN102036050A (en) * | 2010-10-11 | 2011-04-27 | 中兴通讯股份有限公司 | Automatic recall terminal on-line method and system for video conference |
| CN103152545B (en) * | 2011-12-07 | 2016-02-10 | Polycom通讯技术（北京）有限公司 | A kind of method, video server and video conferencing system processing error correction request |
| CN103152545A (en) * | 2011-12-07 | 2013-06-12 | Polycom通讯技术（北京）有限公司 | Error correction request processing method, video server and video conference system |
| CN104753811B (en) * | 2013-12-30 | 2018-02-23 | 中国移动通信集团公司 | A kind of streaming media service optimization method, equipment and system |
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| CN105680982A (en) * | 2014-11-21 | 2016-06-15 | 中兴通讯股份有限公司 | Data transmission control method, receiving end, sending end and system |
| CN108965220A (en) * | 2017-11-29 | 2018-12-07 | 北京视联动力国际信息技术有限公司 | A kind of method and system that Conference control power is synchronous |
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| CN109949445A (en) * | 2017-12-21 | 2019-06-28 | 深圳市冠凯科技有限公司 | A kind of berth lock and shutdown system based on NB-IoT |
| CN109561072A (en) * | 2018-10-29 | 2019-04-02 | 视联动力信息技术股份有限公司 | A kind of chain circuit detecting method and system |
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| CN114598426A (en) * | 2022-05-10 | 2022-06-07 | 广州市保伦电子有限公司 | Communication management system for digital conference |
| CN118075563A (en) * | 2024-01-23 | 2024-05-24 | 深圳市炫本电子有限公司 | Intelligent system based on video monitoring and video conference synchronization |
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| CN100428793C (en) | 2008-10-22 |
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