CN101753985A - Video monitoring system, and medium flow transmitting control device and method in the video monitoring system - Google Patents
Video monitoring system, and medium flow transmitting control device and method in the video monitoring system Download PDFInfo
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Abstract
The present invention discloses a video monitoring system, and medium flow transmitting control device and method in the video monitoring system. In the present invention, control layer equipment is connected with a plurality of bearing layer equipment. Therefore, when the condition of any bearing layer equipment changes into abnormal, the control layer equipment can be used for detecting according to the conditions of a plurality of bearing layer equipment, and is used for selecting the bearing layer equipment in a normal condition in the plurality of bearing layer equipment to realize the colony control tactics of medium flow transmission. Another bearing layer equipment in a normal condition is randomly selected to ensure that the medium flow transmission between the front-end equipment and a CE can not be cut, and thus, the reliability of the medium flow transmission can be improved.
Description
Technical field
The present invention relates to control technology, medium flow transmitting control device and method in particularly a kind of video monitoring system and this system.
Background technology
The video monitoring system of existing IP based network, mainly comprise video monitoring video camera, digital video frequency server (Digital Video Server, DVS), digital video recorder (Digital VideoRecorder, headend equipment such as DVR) also comprises the IP transmission network that is used to realize video transmission, is used to the client that realizes the network video monitoring platform of equipment unified management and central store and be used for video data is presented at personal computer (PC) or TV.
Yet the headend equipment in the video monitoring system of above-mentioned existing IP based network and the all-IPization that is unrealized, especially this system is the equipment that DVS, DVR etc. do not connect by IP network, thereby has following problem:
1, equipment such as DVS, DVR then needs to link to each other with analog video camera by analog cable, difficult wiring and cost of equipment maintenance height;
2, video definition standard line-by-line inversion (the Phase Alternating Line of analog video camera, PAL) or national television system committee (National Television System Committee, NTSC) be the standard of the seventies in last century six, the high definition of its regulation only is (720 * 576), has hindered the development of video monitoring to HD video;
3, equipment such as DVS, DVR need be connected in the video system based on the port of self, and the port of equipment such as DVR, DVS is numerous, makes that the configuration of equipment is comparatively complicated, and very difficult discovery automatically and the automatic configuration feature realized;
4, equipment such as DVS, DVR uses hardware integrated circuit board standard, and the function difference of each manufacturer's customization is big, need formulate different access waies at the equipment of different vendor;
5, equipment such as DVS, DVR does not have the smart machine access interface, has hindered the development of video monitoring to intelligent video.
By the problems referred to above as seen, the video monitoring system and the all-IPization that is unrealized of existing IP based network, and then the difficulty that makes networking connect up versatility big, system configuration is relatively poor and realization is comparatively complicated, also hindered video monitoring to HD video and intelligentized development simultaneously.
And, the video monitoring system and the all-IPization that is unrealized of existing IP based network, also make unintelligible, the disunity of system architecture, and the communication protocol confusion in the system, lack of standardization, the multistage multiple domain that can't realize a plurality of video monitoring systems especially interconnects, thereby can't unitize management and infinite cascade expansion.
Summary of the invention
In view of this, the invention provides medium flow transmitting control device and method in a kind of video monitoring system and this system, can realize the video monitoring of all-IPization and improve the reliability of media flow transmission.
A kind of video monitoring system provided by the invention, this system comprises: key-course equipment, the access layer equipment that links to each other by IP network with described key-course equipment and bearing layer equipment, the headend equipment that links to each other by described IP network with described access layer equipment and bearing layer equipment respectively and the client unit CE that links to each other by described IP network with described access layer equipment and bearing layer equipment respectively;
Described access layer equipment accesses to described CE and described headend equipment in the described system based on the control of described key-course equipment;
Described bearing layer equipment is realized the media flow transmission between described headend equipment and the described CE based on the control of described key-course equipment;
Wherein, described bearing layer equipment is a plurality of, and a plurality of described bearing layer equipment links to each other with a described key-course equipment by described IP network; Described headend equipment links to each other by described IP network with a plurality of described bearing layer equipments with described CE simultaneously;
In the described key-course equipment, dispose the cluster control strategy that is used for selecting the described bearing layer equipment realization media flow transmission of normal condition from a plurality of described bearing layer equipments; And, described key-course equipment also is used to detect the state of a plurality of described bearing layer equipments, and according to the state and the described cluster control strategy of detected a plurality of described bearing layer equipments, the normal described bearing layer equipment of selection mode is realized the media flow transmission between described headend equipment and the described CE.
Described state comprises running status;
Described key-course equipment is to a plurality of described bearing layer equipment transmit status query requests; In the predetermined period after the transmit status query requests, do not receive the correct status poll response of running status of this bearing layer equipment of expression of described bearing layer equipment feedback, determine that the state of this bearing layer equipment is unusual by normally becoming.
Described state further comprises load condition;
When the load capacity that described key-course equipment further carries is higher than the normal preset first threshold value of expression load, determine that the state of this bearing layer equipment is unusual by normally becoming in described status poll response;
Perhaps, described key-course equipment further is higher than the load overload notification that initiatively reports when the expression load is preset second threshold value normally according to described bearing layer equipment in load capacity, determines that the state of this bearing layer equipment is unusual by normally becoming.
Described state further comprises Link State;
The link failure that described key-course equipment further reports according to described bearing layer equipment is notified or by the link failure notice that described headend equipment under the Media Stream of this bearing layer equipment carrying or described CE report, is determined that the state of this bearing layer equipment is unusual by normally becoming.
Medium flow transmitting control device in a kind of video monitoring system provided by the invention, described video monitoring system comprises: key-course equipment, the access layer equipment that links to each other by IP network with described key-course equipment and a plurality of bearing layer equipments, the headend equipment that links to each other by described IP network with the described bearing layer equipment of described access layer equipment and each respectively and the client unit CE that links to each other by described IP network with described access layer equipment and bearing layer equipment respectively;
Described access layer equipment accesses to described CE and described headend equipment in the described system based on the control of described key-course equipment; Described bearing layer equipment is realized the media flow transmission between described headend equipment and the described CE based on the control of described key-course equipment;
This device is arranged in the described key-course equipment, and comprises:
The policy configurations module wherein disposes the cluster control strategy that is used for selecting from a plurality of described bearing layer equipments the described bearing layer equipment realization media flow transmission of normal condition;
State detection module is used to detect the state of a plurality of described bearing layer equipments;
Policy enforcement module is used for state and described cluster control strategy according to detected a plurality of described bearing layer equipments, and the normal described bearing layer equipment of selection mode is to realize the media flow transmission between described headend equipment and the described CE.
Described state comprises running status;
Described state detection module is to a plurality of described bearing layer equipment transmit status query requests; In the predetermined period after the transmit status query requests, do not receive the correct status poll response of running status of this bearing layer equipment of expression of described bearing layer equipment feedback, determine that the state of this bearing layer equipment is unusual by normally becoming.
Described state further comprises load condition;
When the load capacity that described state detection module further carries is higher than the normal preset first threshold value of expression load, determine that the state of this bearing layer equipment is unusual by normally becoming in described status poll response;
Perhaps, described state detection module further is higher than the load overload notification that initiatively reports when the expression load is preset second threshold value normally according to described bearing layer equipment in load capacity, determines that the state of this bearing layer equipment is unusual by normally becoming.
Described state further comprises Link State;
The link failure that described state detection module further reports according to described bearing layer equipment is notified or by the link failure notice that described headend equipment under the Media Stream of this bearing layer equipment carrying or described CE report, is determined that the state of this bearing layer equipment is unusual by normally becoming.
Media flow transmission control method in a kind of video monitoring system provided by the invention, described video monitoring system comprises: key-course equipment, the access layer equipment that links to each other by IP network with described key-course equipment and a plurality of bearing layer equipments, the headend equipment that links to each other by described IP network with the described bearing layer equipment of described access layer equipment and each respectively and the client unit CE that links to each other by described IP network with described access layer equipment and bearing layer equipment respectively;
Described access layer equipment accesses to described CE and described headend equipment in the described system based on the control of described key-course equipment; Described bearing layer equipment is realized the media flow transmission between described headend equipment and the described CE based on the control of described key-course equipment;
And dispose the cluster control strategy that is used for selecting from a plurality of described bearing layer equipments the described bearing layer equipment realization media flow transmission of normal condition in the described key-course equipment, this method comprises:
The state of a plurality of described bearing layer equipments of described key-course Equipment Inspection;
Described key-course equipment is according to the state and the described cluster control strategy of detected a plurality of described bearing layer equipments, and the normal described bearing layer equipment of selection mode is to realize the media flow transmission between described headend equipment and the described CE.
Described state comprises running status;
The state of a plurality of described bearing layer equipments of described detection comprises: to a plurality of described bearing layer equipment transmit status query requests; In the predetermined period after the transmit status query requests, do not receive the correct status poll response of running status of this bearing layer equipment of expression of described bearing layer equipment feedback, determine that the state of this bearing layer equipment is unusual by normally becoming.
Described state further comprises load condition;
The state of a plurality of described bearing layer equipments of described detection further comprises: when the load capacity of carrying in described status poll response is higher than the normal predetermined threshold value of expression load, determine that the state of this bearing layer equipment is unusual by normally becoming; Perhaps, be higher than the load overload notification that initiatively reports when the expression load is preset second threshold value normally in load capacity, determine that the state of this bearing layer equipment is unusual by normally becoming according to described bearing layer equipment.
Described state further comprises Link State;
The state of a plurality of described bearing layer equipments of described detection further comprises: notify or notified by the link failure that described headend equipment under the Media Stream of this bearing layer equipment carrying or described CE report according to the link failure that described bearing layer equipment reports, determine that the state of this bearing layer equipment is unusual by normally becoming.
As seen from the above technical solution, not only realized the video monitoring of all-IPization in the present invention, and a key-course equipment connects a plurality of bearing layer equipments, thereby become when unusual when the state of any bearing layer equipment, can be by key-course equipment according to state-detection to a plurality of bearing layer equipments, and be used for selecting the described bearing layer equipment of normal condition to realize the cluster control strategy of media flow transmission from a plurality of described bearing layer equipments, the optional normal bearing layer equipment of another state guarantees to realize that the media flow transmission between headend equipment and the CE can not interrupt, thereby can improve the reliability of media flow transmission.
Description of drawings
Fig. 1 is the video monitoring system logical layer structure schematic diagram of IP based network among the present invention;
Fig. 2 is the system architecture schematic diagram of the video monitoring system of IP based network among the present invention;
Fig. 3 is the system interface schematic diagram of the video monitoring system of IP based network among the present invention;
Fig. 4 is the single domain networking structure schematic diagram of the video monitoring system of IP based network among the present invention;
Fig. 5 is a kind of schematic flow sheet of exchange method in the video monitoring system of IP based network among the present invention;
Fig. 6 is the another kind of schematic flow sheet of exchange method in the video monitoring system of IP based network among the present invention;
Fig. 7 is for comprising a kind of exemplary block diagram of the video monitoring system of a plurality of headend equipments in the embodiment of the invention;
Fig. 8 is for comprising the another kind of exemplary block diagram of the video monitoring system of a plurality of headend equipments in the embodiment of the invention;
Fig. 9 is the exemplary block diagram of medium flow transmitting control device in the embodiment of the invention;
Figure 10 is the exemplary process diagram of media flow transmission control method in the embodiment of the invention.
Embodiment
For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 1 is the video monitoring system logical layer structure schematic diagram of IP based network among the present invention.As shown in Figure 1, in invention, in the video monitoring system of IP based network, can comprise 4 logical layers: Access Layer 101, bearing bed 102, key-course 103 and operation layer 104.
1) Access Layer 101 is supported IP agreement, TCP (Transmission Control Protocol, transmission control protocol), UDP (User Datagram Protocol, User Datagram Protoco (UDP)) and SIP (SessionInitiation Protocol, session initiation protocol) etc. transmission control protocol is used for the access of the various end points of video monitoring.Wherein, end points can specifically comprise subscriber endpoints, Media Stream end points and alarm end points, and the alarm end points is for optional and inessential.
2) bearing bed 102, are used for carrying the Media Stream of video monitoring, comprise the forwarding distribution of Media Stream, the bottom transmission of Media Stream; Alternatively, bearing bed 102 can also be further used for the storage of Media Stream.
For the forwarding distribution of the Media Stream of bearing bed 102, can transmit distribution function by the medium that logically mark off in the bearing bed 102 and realize.Functions such as medium transmit that distribution function can be used for the duplicating of Media Stream, transmits, distributes, broadcasting, multicast and route.
Bottom transmission for the Media Stream of bearing bed 102 can be realized by the bottom transport function that logically marks off in the bearing bed 102.The bottom transport function can be used for controlling the transmission of signaling and notice signaling.Wherein, control signaling and notice signaling all can be the signaling of Session Initiation Protocol, and can use socket (Socket) connection and content among the TCP to carry extend markup language (eXtensibleMarkup Language, XML) message semantic definition of form.Wherein, notice signaling is for optionally signaling is nonessential.
Certainly, the bottom transport function also is used to realize the transmission of Media Stream.Specifically, transmission at Media Stream, the media stream formats that each logical layer equipment in can the employing system is supported, and H.264 selection is used, (the Moving Pictures Experts Group of dynamic image expert group, MPEG-4), (Audio and Video Coding Standard, AVS) etc. agreement encapsulates Media Stream digital audio/video encoding and decoding technique standard.
Storage for the Media Stream of bearing bed 102 can be realized by the media store functional module that logically marks off in the bearing bed 102.The media store functional module can be used for reception, the storage of Media Stream; This media store functional module can insert storage area network network (Storage Area Network, IP-SAN), network attached storage (Network Attached Storage, NAS), direct-connected mode is stored (DirectAttached Storage, DAS) memory device such as IP such as grade; And, the media store functional module can also be further used for storage plan management, storage medium management and playing back videos service etc., for example, formulate storage plan according to the characteristic of time, each logical layer equipment, alarm type etc., carry out for the media store functional module by the user.
3) key-course 103, be used for the session control of video monitoring system and audio frequency and video distribution management (Audioand Video Distribute Management, AVDM); Alternatively, key-course 103 can also be further used for the audio frequency and video storage administration (Audio and Video Storage Management, AVSM), end points management, rights management etc.
For the session control of key-course 103, can realize by the session control function module that logically marks off in the key-course 103.Session control function module can be used for the control of interior all business of video monitoring system of IP based network among the present invention.And, operation layer 104 among the present invention can carry out professional foundation, uses and cancel operation by Session Initiation Protocol, thereby the session control function module in the key-course 103 is inner can set up professional controll block, time controll block and the resources control block etc. that be used for controlling this business at this business, and safeguards professional controll block, time controll block and the resources control block of being set up etc.
For the AVDM and the AVSM of key-course 103, can realize by AVDM functional module that logically marks off in the key-course 103 and AVSM functional module respectively.The AVDM functional module is used to carry out media flow transmission control, the control of controlling signaling and notice signaling and load balancing policy control, the needed sound mixing function of voice video conference; The AVSM functional module is used for the control to the media store functional module of bearing bed 102.
End points management for key-course 103 can be realized by the end points management function module that logically marks off in the key-course 103.End points management function module can be used in the video monitoring system to IP based network among the present invention, the equipment of each end points such as the subscriber endpoints of all accesses, Media Stream end points and alarm end points manages, by to the facility information of the said equipment and the abstract storage that is recorded in the user profile of system, by static configuration to the database in the system, carry out the configuration and the attribute management of each logical layer equipment by network management unit, make the video monitoring system of IP based network among the present invention have the ability of overall unified management and each logical layer equipment of planning.Wherein, the said equipment information can comprise information such as device identification, device attribute, and above-mentioned user profile then can comprise information such as user ID, user property; Database in the aforesaid system can be shared by each logical layer usually and use, thereby does not describe in conjunction with a certain logical layer separately in this article.
For the rights management of key-course 103, can realize by the rights management functional module that logically marks off in the key-course 103.The rights management functional module can be used for determining the rights of using of user to the various resources in the video monitoring system of IP based network among the embodiment.
4) operation layer 104, are used for realizing basic business in the video monitoring system of IP based network of the present invention at least, as the professional intellectual analysis of formulating reference etc.
For the basic business in the operation layer 104, can realize by the basic business functional module that logically marks off in the operation layer 104.The basic business functional module can be used for providing the basic service of the video monitoring system of IP based network among the present invention, for example monitoring in real time, on-demand playback, cradle head control, storage plan, access control, batch configuration etc.The user can use basic service by the CE client in the Access Layer.
For the intellectual analysis in the operation layer 104, can realize by the intellectual analysis functional module that logically marks off in the operation layer 104.The intellectual analysis functional module can be used for providing the IN service of the video monitoring system of IP based network among the present invention, by combining of intellectual technology and upper layer application, satisfies the demand of user to system.For example: object tracking (Motion Tracking), recognition of face (FacialDetection), vehicle identification (Vehicle Identification), illegal be detained (Object Persistence), pyrotechnics detects (Fire Detection), people flow rate statistical (People Counting), people's group control (FlowControl), human body behavioural analysis (Action Analyze), magnitude of traffic flow control (Traffic Flow), advanced video mobile detection (Advanced VMD), article lost or displacement detecting (MovingDetection) etc.
Need to prove that each functional module in the operation layer 104 mainly is in order to make among the present invention the video monitoring system of IP based network video monitoring function can be provided in the mode of business, and can further provide other business functions.Certainly, directly under the control of key-course 103, obtain and distribution media stream if break away from professional by Access Layer 101 by bearing bed 102, then also can realize video monitoring, thereby operation layer 104 is optional and nonessential for the video monitoring system of IP based network among the present invention.
The various functional modules of mentioning in the above-mentioned logical layer structure all can be realized by computer program by those skilled in the art, give unnecessary details no longer one by one at this.
Below, based on above-mentioned logical layer structure, the system architecture of the video monitoring system of IP based network in the embodiment of the invention is elaborated.
Fig. 2 is the system architecture schematic diagram of the video monitoring system of IP based network among the present invention in fact.As shown in Figure 2, in the present invention, the system architecture of the video monitoring system of IP based network comprises the access layer equipment of corresponding Access Layer 101, the bearing layer equipment of corresponding bearing bed 102, the key-course equipment of corresponding key-course 103.
1) access layer equipment of corresponding Access Layer 101 comprises: the client unit of respective user end points (Client Element, CE) 201, the headend equipment 202 of corresponding Media Stream end points or alarm end points and be used for CCF that CE 201, headend equipment 202 insert (Call Control Function, CCF) server 203.
Preferably, CCF server 203 can provide SIP gateway and safe access gateway.
Preferably, CE 201 can specifically be divided into client/server (Client/Serve, C/S) architecture mode and browser/server (Browser/Server, B/S) architecture mode is two kinds, and CE 201 can support real-time video, on-demand playback, Real-time Alarm, the alarm interlock, the round cut plan, group is cut plan, the group cuts plan, user's login, rights management, equipment control, batch configuration, track cruises, cradle head control, transparent channel, storage administration, storage plan, voice broadcast service, speech talkback, video recording is downloaded, management of video, the group Role Management, equipment incorporates into, (Geographic Information System GIS) waits the network video monitor and control system business to GIS-Geographic Information System.
Preferably, headend equipment 202 can be that for example medium stream information such as IP Camera, IP The Cloud Terrace equipment provides equipment, is used for the collection and the output of video information, audio-frequency information, data message, intellectual analysis information and warning information; Alternatively, headend equipment 202 can link to each other with smart machine 202 ' by for example electric connection mode such as analog line, embedding, perhaps also can link to each other with smart machine 202 ' by IP network, this smart machine 202 ' also links to each other by IP network with CCF server 203 simultaneously, so that access in the video monitoring system by CCF server 203; Certainly, for the system that comprises optional alarm end points, headend equipment 202 can also be safety-security area equipment such as gate inhibition's equipment, infrared equipment, smoke sensing equipment, intelligent alarm analytical equipment for example.
And, above-mentioned CE 201 and headend equipment 202 are supported the Session Initiation Protocol expansion, support RTP (Real-time Transport Protocol, RTP), RTCP Real-time Transport Control Protocol (Real-timeTransport Control Protocol, RTCP) and in real time fluidisation agreement (Real-time StreamingProtocol, media flow transmission control protocol such as RTSP).
2) bearing layer equipment of corresponding bearing bed 102 comprises: (Audio and VideoDistribute Function, AVDF) server 204 for the audio frequency and video distribution function.Medium in the foregoing bearing bed 102 are transmitted distribution function and are carried in the AVDF server 204.
3) the key-course equipment of corresponding key-course 103 comprises: (Service ManagerFunction, SMF) server 206 for service management function.Session control function module and AVDM functional module in the foregoing key-course 103 are carried in the SMF server 206.
In addition, for the basic business functional module in the foregoing optional operation layer 104, intellectual analysis functional module, interlock configuration feature module, then can carry jointly by all included access layer equipments of the video monitoring system of IP based network in the present embodiment, all bearing layer equipments, all key-course equipment.
Still referring to Fig. 2, in the present embodiment in the video monitoring system of IP based network:
" linking to each other " mentioned herein by IP network, can adopt the existing concrete mode that connects by IP network arbitrarily, for example, each logical layer equipment can be connected same switching equipment in the IP network or be connected to different switching equipment in the IP network, and alternate manner is given unnecessary details no longer one by one at this.
Alternatively, the video monitoring system of IP based network among the present invention, its bearing layer equipment can further include audio frequency and video memory function (Audio and Video Storage Function, AVSF) server, this AVSF server links to each other by IP network with SMF server 206 and AVDF server 204 respectively, and the media store functional module in the foregoing bearing bed 102 is carried in the AVSF server; And key-course equipment can further include subscription authentication function (User AuthenticationFunction, UAF) server, this UAF server and SMF server 206 link to each other by IP network, for optionally end points management function module and rights management functional module in the key-course 103 as previously mentioned, can carry jointly by SMF server 206 and UAF server.
Fig. 3 is the system interface schematic diagram of the video monitoring system of IP based network in the embodiment of the invention one.As shown in Figure 3, in the present embodiment as shown in Figure 2 in the video monitoring system framework of IP based network:
Adopt Icc interface (Interface of CE and CCF) 301 between CE 201 and the CCF server 203, interface communication uses Session Initiation Protocol;
Adopt Icn interface (Interface of CCF andNE) 302a between headend equipment 202 and the CCF server 203, interface communication uses Session Initiation Protocol; Need to prove that " NE " in the related English full name of each english abbreviation only represents headend equipment 202 in this article herein;
The smart machine 202 ' that is electrically connected with headend equipment 202 adopts Ici interface (Interface of CCF and Intelligent Device) 302b then and between the CCF server 203, and interface communication uses Session Initiation Protocol;
Adopt Isc interface (Interface of SMFand CCF) 303 between CCF server 203 and the SMF server 206, interface communication uses Session Initiation Protocol;
Adopt Isd interface (Interface of SMFand AVDF) 304 between AVDF server 204 and the SMF server 206, interface communication uses the Socket agreement;
Adopt Idc interface (Interface of AVDF andCE) 308 between CE 201 and the AVDF server 204, interface communication uses RTP or RTCP or RTSP agreement;
Adopt Ind interface (Interface of NE andAVDF) 309 between headend equipment 202 and the AVDF server 204, interface communication uses RTP or RTCP or RTSP agreement.
In addition, optionally adopt Iss interface (Interface of SMF and AVSF) between AVSF server and the SMF server 206, interface communication uses the Socket agreement; Optionally adopt Isu interface (Interface of SMF and UAF) between UAF server and the SMF server 206, interface communication uses Session Initiation Protocol.
Fig. 4 is the single domain networking structure schematic diagram of the video monitoring system of IP based network in the embodiment of the invention.As shown in Figure 4, in the present embodiment in the video monitoring system of IP based network, for the situation that only comprises a SMF server 206, be referred to as the single domain networking structure, this system specifically comprises: CE 201, headend equipment 202, CCF server 203, AVDF server 204, SMF server 206, not shown optional AVSF server and UAF server among Fig. 4.
Fig. 5 is a kind of schematic flow sheet of exchange method in the video monitoring system of IP based network in the embodiment of the invention.As shown in Figure 5, in as shown in Figure 4 the video monitoring system of IP based network, can carry out the mutual of media flow transmission control according to following flow process between CE 201, headend equipment 202, CCF server 203, AVDF server 204, the SMF server 206 in the present embodiment:
Step 501, CE 201 sends first request message that obtains Media Stream by IP network to CCF server 203, for example is called the message of " INVITE ", the Media Stream of the arbitrary headend equipment 202 of expression acquisition request;
Step 502, CCF server 203 are returned the session (Session) that for example is called first response message of " 100 " message and preserves this request correspondence according to first request message from CE 201 by IP network to CE 201;
Step 503, CCF server 203 is according to first request message from CE 201, the message etc. that sends for example " INVITE " by name by IP network to SMF server 206 is obtained second request message of Media Stream, is forwarded to SMF server 206 with the request with CE 201; Second request message described herein can be first request message of directly transmitting in the transparent transmission mode, also can be the request message that is generated separately by CCF server 203;
Step 504, SMF server 206 returns second response message by IP network to CCF server 203 according to second request message that obtains Media Stream from CCF server 203;
Step 505, SMF server 206 judge whether headend equipment 202 has been set up media flow transmission interface as shown in Figure 4 with AVDF server 204 and be connected 413; If, then direct execution in step 509, otherwise execution in step 506;
Step 506, SMF server 206 send the 5th request message of expression application ports such as " INVITE " message by name for example by IP network and forward end equipment 202, with 202 applications of forward end equipment can output media stream port;
Step 507, headend equipment 202 distributes corresponding port, returns the 5th response message that expression ports such as for example being called " 200OK " message has distributed by IP network and to SMF server 206;
Step 508, the 5th response message that the expression port that SMF server 206 is returned after the distribution corresponding port according to headend equipment 202 has distributed, send the 3rd ACK that confirms that port has distributed by IP network and forward end equipment 202, after this, headend equipment 202 promptly is connected 413 by the media flow transmission interface that IP network and AVDF server 204 are set up as shown in Figure 4;
Step 509, SMF server 206 returns the 3rd response message that for example expression video capable monitor sessions such as message of " 200OK " by name can be set up by IP network to CCF server 203;
Step 510, CCF server 203 are returned the 4th response message that for example expression video capable monitor sessions such as message of " 200OK " by name can be set up according to the 3rd response message from SMF server 206 to CE 201; Need to prove that the 4th response message described herein can be the 3rd response message of directly transmitting in the transparent transmission mode, also can be the response message that is generated separately by CCF server 203;
Step 511, CE 201 sends a ACK that expression confirm video monitoring session can set up by IP network to CCF server 203 according to the 4th response message from CCF server 203;
Step 512, CCF server 203 is confirmed the ACK that the video monitoring session can be set up according to the expression from CE 201, sends the 2nd ACK that expression confirms that the video monitoring session can be set up by IP network to SMF server 206; Need to prove that the 2nd ACK described herein can be an ACK who directly transmits in the transparent transmission mode, also can be the ACK that is generated separately by CCF server 203;
Step 513, SMF server 206 is confirmed the 2nd ACK that the video monitoring session can be set up according to the expression from CCF server 203, by the request message of IP network to AVDF server 204 transmission open media flow ports, for example PortOpenNotify request message;
Step 514, AVDF server 204 bases are from the request message of the open media flow port of SMF server 206, by its with corresponding headend equipment 202 between the media flow transmission interface of IP based network connect 413, open this headend equipment 202 can output media stream port, and by IP network and return the response message of opening of " Response " message by name for example to SMF server 206;
Step 515, CE 201 AVDF server 204 opened corresponding headend equipment 202 can the port of output media stream after, the media flow transmission interface of setting up as shown in Figure 4 by IP network and AVDF server 204 is connected 411, and by with AVDF server 204 between the media flow transmission interface of IP based network be connected 411, the media flow transmission interface of IP based network is connected 413 between AVDF server 204 and AVDF server 204 and the headend equipment 202, carries out the mutual of Media Stream based on video monitoring session and headend equipment 202.
So far, this flow process finishes.
In the above-mentioned flow process, step 502,504 is optional step, and step 503 can be carried out before step 502 or with step 502 simultaneously, and step 505 can be carried out before step 504 or with step 504 simultaneously; And be connected 413 situation by having set up the media flow transmission interface with AVDF server 204 for headend equipment 202, step 505～508 also are optional step.
Fig. 6 is the another kind of schematic flow sheet of exchange method in the video monitoring system of IP based network in the embodiment of the invention.As shown in Figure 6, based on the video monitoring system of IP based network in the present embodiment and after flow process as shown in Figure 5, in the present embodiment in as shown in Figure 4 the video monitoring system of IP based network, between CE 201, headend equipment 202, CCF server 203, AVDF server 204, the SMF server 206, can also further realize the mutual of media flow transmission control according to following flow process:
Step 601, CE 201 sends the 6th request message that for example expression of " BYE " message by name stops the video monitoring session, the video monitoring session between request termination and the headend equipment 202 by IP network to CCF server 203;
Step 602, CCF server 203 is according to the 6th request message from CE 201, by sending the 7th request message that expression stops the video monitoring session, be forwarded to SMF server 206 with request with the video monitoring session between CE 201 terminations and the headend equipment 202 to SMF server 206; Need to prove that the 7th request message described herein can be the 6th request message of directly transmitting in the transparent transmission mode, also can be the request message that CCF server 203 generates separately;
Step 603, SMF server 206 send the request message of closing Media Stream port, for example PortCloseNotify request message by IP network to AVDF server 204 according to the 7th request message from CCF server 203;
Step 604, AVDF server 204 bases are from the request message of the open media flow port of SMF server 206, by its with corresponding headend equipment 202 between the media flow transmission interface of IP based network connect 413, close the port that this headend equipment 202 can output media stream, and return the response message of closing of " Response " message by name for example by IP network to SMF server 206;
Step 605, SMF server 206 bases are closed the media flow transmission interface 411 between response message termination CE 201 and the ASDF server 204, and send the 6th response message that for example is called expression video monitoring session terminations such as " 200OK " message by IP network to CCF server 203;
Step 606, CCF server 203 is according to the 6th response message, send the 7th response message that expression video monitoring sessions such as for example being called " 200OK " message stops by IP network to CE 201, CE201 after receiving the 7th response message, disconnect with AVDF server 204 between the media flow transmission interface of IP based network be connected 411, thereby stop the video monitoring session with headend equipment 202; Need showing of explanation, above-mentioned the 7th response message can be the 6th response message of directly transmitting in the transparent transmission mode, also can be the message that is generated separately by CCF server 203;
Step 607, whether SMF server 206 is judged the video monitoring session of current termination, be last video monitoring session of corresponding front end interface 202, if, then continue execution in step 608, otherwise process ends;
Step 608, SMF server 206 sends the 8th request message that " BYE " message etc. for example by name is cancelled port by IP network and forward end equipment, with forward end equipment 202 cancel can output media stream port;
Step 609, when front end equipment 202 cancelling corresponding port, and the expression ports such as " 200OK " message for example by name that returned the 8th response message of having cancelled after, headend equipment 202 has disconnected by IP network and has been connected 413 with media flow transmission interface between the AVDF server 204.
So far, this flow process finishes.
In the above-mentioned flow process, step 605,606 is optional step, and step 607 can be carried out before step 605 or step 606, also can carry out simultaneously with step 605 or step 606; And, be connected also nonessentially with media flow transmission interface 413 between the AVDF server 204 owing to disconnect headend equipment 202, therefore, step 607～609 also are optional step.
As seen, among the present invention in the video monitoring system of IP based network, the connection between CE, headend equipment and each the logical layer equipment all realizes by IP network, thereby realized the all-IPization of video monitoring system.
More than, be detailed description to the video monitoring system of IP based network among the present invention.
Though only show a CE 201 and a headend equipment 202 among Fig. 4, in the practical application, CE 201 and headend equipment 202 all can be for a plurality of, as shown in Figure 7.For this situation, if a SMF server 206 only connects an AVDF server 204 in system as shown in Figure 4, though then this video monitoring system can guarantee the realization of video monitoring can have following problem:
When AVDF server 204 self breaks down and causes running status unusual, perhaps when AVDF server 204 causes load condition unusual owing to the headend equipment 202 of a greater number that connects, again or when the Link State between AVDF server 204 and headend equipment 202 or the CE 201 is unusual, the Media Stream of exporting with the continuous headend equipment 202 of this AVDF server 204 can't transfer to corresponding CE 201.
As seen, only be connected with an AVDF server 204 owing to a SMF server in the video monitoring system as shown in Figure 4, thereby can't when various abnormal state appears in AVDF server 204, guarantee effective transmission of Media Stream, thereby make that the reliability of media flow transmission is not high.
Thus, present embodiment also further provides a kind of and can improve the improvement video monitoring system of media flow transmission reliability and a kind of medium flow transmitting control device and method of video monitoring system based on as shown in Figure 4 video monitoring system.
Fig. 8 is for comprising the another kind of exemplary block diagram of the video monitoring system of a plurality of headend equipments in the embodiment of the invention.As shown in Figure 8, the video monitoring system of present embodiment is the video monitoring system of IP based network, and this system comprises following each layer equipment and the server identical with existing video monitoring system at least: the CE 201 of Access Layer, headend equipment 202, CCF server 203; The AVDF server 204 of bearing bed; The SMF server 206 of key-course.
Each CE 201 and headend equipment 202 link to each other by IP network with AVDF server 204 respectively, the media flow transmission that realizes between CE 201 and the headend equipment 202 by AVDF server 204.
Than video monitoring system as shown in Figure 7, in present embodiment video monitoring system as shown in Figure 8, there are a plurality of AVDF servers 204 to link to each other with a SMF server 206 by IP network, constitute a server pools (AVDF POOL); And each CE 201 and headend equipment 202 respectively with AVDF POOL in each AVDF server 204 link to each other by IP network, be each CE 201 with each headend equipment 202 simultaneously with AVDF POOL in a plurality of AVDF servers 204 link to each other the network structure of formation multi-to-multi by IP network.
And, in the SMF server 206, dispose the cluster control strategy, this cluster control strategy is used for SMF server 206 can be from the AVDF POOL of a plurality of AVDF servers 204 formations, and any one of selection normal condition or a plurality of AVDF server 204 are realized media flow transmission.
Like this, SMF server 206 is except realizing existing capability, also be used for detecting the state of a plurality of AVDF servers 204 of AVDF POOL, and according to the above-mentioned cluster control strategy of configuration in the state of detected a plurality of AVDF servers 204 and the SMF server 206, the normal one or more AVDF servers 204 of selection mode are realized the media flow transmission between any headend equipments 202 and any CE 201.Wherein, cluster control strategy as herein described can be set arbitrarily under this cardinal principle of " having only state normally just to select " according to actual needs, enumerates no longer one by one at this.
For example, for a CE 201 who newly accesses to system by CCF server 203, SMF server 206 can be according to the above-mentioned cluster control strategy of configuration in the state of detected a plurality of AVDF servers 204 and the SMF server 206, and an optional normal AVDF server 204 of state is realized the media flow transmission between this CE 201 and the corresponding arbitrary headend equipment 202.
Again for example, for one by a certain AVDF server 204 realize with corresponding arbitrary headend equipment 202 between the CE 201 of media flow transmission, after these AVDF server 204 states become unusually, SMF server 206 can be according to the above-mentioned cluster control strategy of configuration in the state of detected a plurality of AVDF servers 204 and the SMF server 206, the normal AVDF server 204 of optional another state is replaced the AVDF server 204 of abnormal state, realizes the media flow transmission between this CE 201 and this headend equipment 202.
In the present embodiment, referring to Fig. 9, SMF server 206 can comprise as medium flow transmitting control device:
The policy configurations module 261 that is used for the bearing cluster control strategy wherein disposes and is used for selecting any one of normal conditions or the cluster control strategy that a plurality of AVDF server 204 is realized media flow transmission from a plurality of AVDF servers 204;
Be used to detect the state detection module 262 of a plurality of AVDF server 204 states, detect the state of a plurality of AVDF servers 204 among the AVDFPOOL;
Be used to select the policy enforcement module 263 of the AVDF server 204 of normal condition, according to the above-mentioned cluster control strategy of configuration in the state of detected a plurality of AVDF servers 204 and the SMF server 206, the normal one or more AVDF servers 204 of selection mode are realized the media flow transmission between any headend equipments 202 and any CE 201.
Further, for one by a certain AVDF server 204 realize with corresponding arbitrary headend equipment 202 between the CE 201 of media flow transmission, the switching of existing media flow transmission between different AVDF servers 204 may appear, so for the continuity of the media stream service after guaranteeing to switch, can further comprise the business continuing module 264 that links to each other with policy enforcement module 263 in the SMF server 206, be used for also notifying by the modes such as AVDF server 204 after the policy enforcement module 263 selected switchings, realize the forwarding that continues of Media Stream by the point of interruption of recording medium stream before switching AVDF server 204.
Because after these AVDF server 204 states become unusually, SMF server 206 can be according to the above-mentioned cluster control strategy of configuration in the state of detected a plurality of AVDF servers 204 and the SMF server 206, the normal AVDF server 204 of optional another state is replaced the AVDF server 204 of abnormal state, realizes the media flow transmission between this CE 201 and this headend equipment 202.
Wherein, state detection module 262 can detect the state of a plurality of AVDF servers 204 by the mode of a plurality of AVDF server 204 transmit status query requests in AVDF POOL.
Specifically, further carry the state table of a plurality of AVDF server 204 states among the record AVDF POOL in the state detection module 262 alternatively, the state initial value of a plurality of AVDF servers 204 is normally in this state table.Certainly, among the AVDF POOL state of a plurality of AVDF servers 204 also can adopt other can realization information the existing variety of way of record represent, give unnecessary details no longer one by one at this.
In the practical application, about the state of AVDF server 204, can only consider its running status, so for the running status of AVDF server 204, corresponding operation comprises in the corresponding SMF server 206:
State detection module 262 is a plurality of AVDF servers 204 transmit status query requests in AVDF POOL periodically or in real time; In the predetermined period after the transmit status query requests, if do not receive the correct status poll response of running status of this AVDF server 204 of expression of any AVDF server 204 feedbacks, the running status of then determining this AVDF server 204 is unusual by normally becoming, promptly the state of this AVDF server 204 is unusual by normally becoming, and changes state corresponding in the state table into expression unusual value; If received the correct status poll response of running status of this AVDF server 204 of expression of any AVDF server 204 feedbacks, determined that then the running status of this AVDF server 204 still keeps normally, and state corresponding in the state table is not made an amendment.
In the practical application, about the state of AVDF server 204, can further consider its load condition when considering its running status, so for the load condition of AVDF server 204, corresponding operation comprises in the corresponding SMF server 206:
State detection module 262 can be further in the load capacity of this AVDF server 204 that from the status poll response that is received from each AVDF server 204, carries, and when the entrained load capacity of status poll response of any AVDF server 204 that obtains is higher than the normal preset first threshold value of expression load, though the running status of this AVDF server 204 is normal, but still the state of determining this AVDF server 204 is unusual by normally becoming, promptly the state of this AVDF server 204 is unusual by normally becoming, and changes state corresponding in the state table into expression unusual value; Correspondingly, when the entrained load capacity of obtaining of any AVDF server 204 status polls response is higher than the normal predetermined threshold value of expression load, the state of determining this AVDF server 204 still keeps normal, and because the running status of this AVDF server 204 is also normal, thereby the running status of determining this AVDF server 204 still keeps normally, and the state of correspondence in the state table do not made an amendment;
Perhaps, state detection module 262 can further be higher than the load overload notification that initiatively reports when the expression load is preset second threshold value normally according to any AVDF server 204 in the load capacity of this AVDF server 204, the state of determining this bearing layer equipment is unusual by normally becoming, and changes state corresponding in the state table into expression unusual value; Correspondingly, if do not receive the load overload notification that any AVDF server 204 reports, think that then the load condition of this AVDF server 204 keeps normal, can determine according to the running status of this AVDF server 204 whether the state of this AVDF server 204 is unusual by normally becoming according to aforesaid way this moment so.
Wherein, for the above-mentioned entrained load capacity of status poll response by AVDF server 204, if the media flow transmission that AVDF server 204 is realized is finished by the software of its inner carrying, then bearing capacity can be distributed to the resource utilization of software for this AVDF server 204; If AVDF server 204 is the hardware integrated circuit board, then bearing capacity can be internal memory in the hardware integrated circuit board and cpu busy percentage.
In the practical application, state about AVDF server 204, can also further consider its Link State when considering its running status and/or load condition, so for the Link State of AVDF server 204, corresponding operation comprises in the corresponding SMF server 206:
The link failure that state detection module 262 can further initiatively report according to AVDF server 204 is notified or is notified by the link failure that CCF server 103 reports by headend equipment 202 or CE 201 under the Media Stream of these AVDF server 204 realization transmission, the state of determining this AVDF server 204 is unusual by normally becoming, and no matter whether the running status and/or the load condition of this AVDF server 204 be normal, the state of all determining this AVDF server 204 is unusual by normally becoming, and changes state corresponding in the state table into expression unusual value; Correspondingly, if do not receive the link failure notice that any AVDF server 204 or headend equipment 202 or CE 201 report, think that then the Link State of this AVDF server 204 keeps normal, this moment can be according to aforementioned manner so, and whether the state of determining this AVDF server 204 according to the running status and/or the load condition of this AVDF server 204 is by normally becoming unusually.
By such scheme as seen, video monitoring system in the present embodiment comprises a plurality of AVDF servers 204, thereby when AVDF server 204 self breaks down and causes running status unusual, perhaps when AVDF server 204 causes load condition unusual owing to the headend equipment 202 of a greater number that connects, again or when the Link State between AVDF server 204 and headend equipment 202 or the CE 201 is unusual, can can guarantee that the media flow transmission between headend equipment 202 and the CE 201 can not interrupt by the optional normal AVDF servers 204 of another state of SMF server 206, thereby can improve the reliability of media flow transmission.
Figure 10 is the exemplary process diagram of media flow transmission control method in the embodiment of the invention.As shown in figure 10, based on video monitoring system as shown in Figure 8, be a plurality of AVDF servers by IP network link to each other with a SMF server, each headend equipment links to each other by IP network with a plurality of AVDF servers simultaneously with each CE and the SMF server in dispose the cluster control strategy that is used for selecting the AVDF server realization media flow transmission of normal conditions from a plurality of AVDF servers, the media flow transmission control method comprises in the present embodiment:
Before this step, further be provided for writing down the state table of a plurality of AVDF server states among the AVDF POOL alternatively, the state initial value of a plurality of AVDF servers is normally in this state table.Certainly, among the AVDF POOL state of a plurality of AVDF servers also can adopt other can realization information the existing variety of way of record represent, give unnecessary details no longer one by one at this.
In this step, can only consider its running status, for the running status of AVDF server, corresponding concrete operations comprise in this step accordingly so:
A plurality of AVDF server transmit status query requests in AVDF POOL periodically or in real time; In the predetermined period after the transmit status query requests, if do not receive the correct status poll response of running status of this AVDF server of expression of any AVDF server feedback, the running status of then determining this AVDF server is unusual by normally becoming, promptly the state of this AVDF server is unusual by normally becoming, and changes state corresponding in the state table into expression unusual value; If received the correct status poll response of running status of this AVDF server of expression of any AVDF server feedback, determined that then the running status of this AVDF server still keeps normally, and state corresponding in the state table is not made an amendment.
In this step, can further consider its load condition when considering the AVDF operation condition of server, for the load condition of AVDF server, corresponding concrete operations further comprise in this step accordingly so:
Load capacity at this AVDF server that from the status poll response that is received from each AVDF server, carries, and when the entrained load capacity of status poll response of any AVDF server that obtains is higher than the normal preset first threshold value of expression load, though the running status of this AVDF server is normal, but still the state of determining this AVDF server is unusual by normally becoming, promptly the state of this AVDF server is unusual by normally becoming, and changes state corresponding in the state table into expression unusual value; Correspondingly, when the entrained load capacity of obtaining of any AVDF server state inquiry response is higher than the normal predetermined threshold value of expression load, the state of determining this AVDF server still keeps normal, and because the running status of this AVDF server is also normal, thereby the running status of determining this AVDF server still keeps normally, and the state of correspondence in the state table do not made an amendment;
Perhaps, be higher than the load overload notification that initiatively reports when the expression load is preset second threshold value normally according to any AVDF server in the load capacity of this AVDF server, the state of determining this bearing layer equipment is unusual by normally becoming, and changes state corresponding in the state table into expression unusual value; Correspondingly, if do not receive the load overload notification that any AVDF server reports, think that then the load condition of this AVDF server keeps normal, can determine according to the running status of this AVDF server whether the state of this AVDF server is unusual by normally becoming according to aforesaid way this moment so.
In this step, can also further consider its Link State when considering its running status and/or load condition, for the Link State of AVDF server, corresponding concrete operations further comprise in this step accordingly so:
Notify or notify by the link failure that the CCF server reports according to the link failure that the AVDF server initiatively reports by headend equipment or CE under the Media Stream of this AVDF server realization transmission, the state of determining this AVDF server is unusual by normally becoming, and no matter whether the running status and/or the load condition of this AVDF server be normal, the state of all determining this AVDF server is unusual by normally becoming, and changes state corresponding in the state table into expression unusual value; Correspondingly, if do not receive the link failure notice that any AVDF server or headend equipment or CE report, think that then the Link State of this AVDF server keeps normal, this moment can be according to aforementioned manner so, and whether the state of determining this AVDF server according to the running status and/or the load condition of this AVDF server is by normally becoming unusually.
In this step, for a CE who newly accesses to system by the CCF server, the SMF server can be according to the cluster control strategy that disposes in the state of detected a plurality of AVDF servers and the SMF server, an optional normal AVDF server of state is realized the media flow transmission between this CE and the corresponding arbitrary headend equipment, and media flow transmission at this moment is a new media flow transmission business.
In this step, for one by a certain AVDF server realize with corresponding arbitrary headend equipment between the CE of media flow transmission, after this AVDF server state becomes unusually, the SMF server can be according to the above-mentioned cluster control strategy that disposes in the state of detected a plurality of AVDF servers and the SMF server, the normal AVDF server of optional another state is replaced the AVDF server of abnormal state, realizes the media flow transmission between this CE and this headend equipment.That is to say, relate to the switching of same media flow transmission between different AVDF servers in this case, so for the continuity of the media stream service after guaranteeing to switch, any-modes such as AVDF server after this step can further be flowed the point of interruption before switching the AVDF server and notify switching by recording medium by the SMF server, the forwarding that continues of realization Media Stream.
So far, this flow process finishes.
By above-mentioned flow process as seen, a SMF server in the present embodiment connects a plurality of AVDF servers, thereby when the AVDF server self breaks down and causes running status unusual, perhaps when the AVDF server causes load condition unusual owing to the headend equipment of a greater number that connects, again or when the Link State between AVDF server and headend equipment or the CE is unusual, can can guarantee that the media flow transmission between headend equipment and the CE can not interrupt by the optional normal AVDF server of another state of SMF server, thereby can improve the reliability of media flow transmission.
Need to prove, only be to be that example describes with each layer equipment such as AVDF server, SMF servers in the present embodiment.In the practical application, at different video monitoring systems, those skilled in the art can know that certainly the equipment that has an identical function with each layer equipment such as AVDF server, SMF servers is replaced, and enumerate no longer one by one at this.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of being done, be equal to and replace and improvement etc., all should be included within protection scope of the present invention.
Claims (12)
1. video monitoring system, it is characterized in that this system comprises: key-course equipment, the access layer equipment that links to each other by IP network with described key-course equipment and bearing layer equipment, the headend equipment that links to each other by described IP network with described access layer equipment and bearing layer equipment respectively and the client unit CE that links to each other by described IP network with described access layer equipment and bearing layer equipment respectively;
Described access layer equipment accesses to described CE and described headend equipment in the described system based on the control of described key-course equipment;
Described bearing layer equipment is realized the media flow transmission between described headend equipment and the described CE based on the control of described key-course equipment;
Wherein, described bearing layer equipment is a plurality of, and a plurality of described bearing layer equipment links to each other with a described key-course equipment by described IP network; Described headend equipment links to each other by described IP network with a plurality of described bearing layer equipments with described CE simultaneously;
In the described key-course equipment, dispose the cluster control strategy that is used for selecting the described bearing layer equipment realization media flow transmission of normal condition from a plurality of described bearing layer equipments; And, described key-course equipment also is used to detect the state of a plurality of described bearing layer equipments, and according to the state and the described cluster control strategy of detected a plurality of described bearing layer equipments, the normal described bearing layer equipment of selection mode is realized the media flow transmission between described headend equipment and the described CE.
2. the system as claimed in claim 1 is characterized in that, described state comprises running status;
Described key-course equipment is to a plurality of described bearing layer equipment transmit status query requests; In the predetermined period after the transmit status query requests, do not receive the correct status poll response of running status of this bearing layer equipment of expression of described bearing layer equipment feedback, determine that the state of this bearing layer equipment is unusual by normally becoming.
3. system as claimed in claim 2 is characterized in that described state further comprises load condition;
When the load capacity that described key-course equipment further carries is higher than the normal preset first threshold value of expression load, determine that the state of this bearing layer equipment is unusual by normally becoming in described status poll response;
Perhaps, described key-course equipment further is higher than the load overload notification that initiatively reports when the expression load is preset second threshold value normally according to described bearing layer equipment in load capacity, determines that the state of this bearing layer equipment is unusual by normally becoming.
4. as claim 2 or 3 described systems, it is characterized in that described state further comprises Link State;
The link failure that described key-course equipment further reports according to described bearing layer equipment is notified or by the link failure notice that described headend equipment under the Media Stream of this bearing layer equipment carrying or described CE report, is determined that the state of this bearing layer equipment is unusual by normally becoming.
5. the medium flow transmitting control device in the video monitoring system, it is characterized in that described video monitoring system comprises: key-course equipment, the access layer equipment that links to each other by IP network with described key-course equipment and a plurality of bearing layer equipments, the headend equipment that links to each other by described IP network with the described bearing layer equipment of described access layer equipment and each respectively and the client unit CE that links to each other by described IP network with described access layer equipment and bearing layer equipment respectively;
Described access layer equipment accesses to described CE and described headend equipment in the described system based on the control of described key-course equipment; Described bearing layer equipment is realized the media flow transmission between described headend equipment and the described CE based on the control of described key-course equipment;
This device is arranged in the described key-course equipment, and comprises:
The policy configurations module wherein disposes the cluster control strategy that is used for selecting from a plurality of described bearing layer equipments the described bearing layer equipment realization media flow transmission of normal condition;
State detection module is used to detect the state of a plurality of described bearing layer equipments;
Policy enforcement module is used for state and described cluster control strategy according to detected a plurality of described bearing layer equipments, and the normal described bearing layer equipment of selection mode is to realize the media flow transmission between described headend equipment and the described CE.
6. device as claimed in claim 5 is characterized in that described state comprises running status;
Described state detection module is to a plurality of described bearing layer equipment transmit status query requests; In the predetermined period after the transmit status query requests, do not receive the correct status poll response of running status of this bearing layer equipment of expression of described bearing layer equipment feedback, determine that the state of this bearing layer equipment is unusual by normally becoming.
7. device as claimed in claim 6 is characterized in that described state further comprises load condition;
When the load capacity that described state detection module further carries is higher than the normal preset first threshold value of expression load, determine that the state of this bearing layer equipment is unusual by normally becoming in described status poll response;
Perhaps, described state detection module further is higher than the load overload notification that initiatively reports when the expression load is preset second threshold value normally according to described bearing layer equipment in load capacity, determines that the state of this bearing layer equipment is unusual by normally becoming.
8. as claim 6 or 7 described devices, it is characterized in that described state further comprises Link State;
The link failure that described state detection module further reports according to described bearing layer equipment is notified or by the link failure notice that described headend equipment under the Media Stream of this bearing layer equipment carrying or described CE report, is determined that the state of this bearing layer equipment is unusual by normally becoming.
9. the media flow transmission control method in the video monitoring system, it is characterized in that described video monitoring system comprises: key-course equipment, the access layer equipment that links to each other by IP network with described key-course equipment and a plurality of bearing layer equipments, the headend equipment that links to each other by described IP network with the described bearing layer equipment of described access layer equipment and each respectively and the client unit CE that links to each other by described IP network with described access layer equipment and bearing layer equipment respectively;
Described access layer equipment accesses to described CE and described headend equipment in the described system based on the control of described key-course equipment; Described bearing layer equipment is realized the media flow transmission between described headend equipment and the described CE based on the control of described key-course equipment;
And dispose the cluster control strategy that is used for selecting from a plurality of described bearing layer equipments the described bearing layer equipment realization media flow transmission of normal condition in the described key-course equipment, this method comprises:
The state of a plurality of described bearing layer equipments of described key-course Equipment Inspection;
Described key-course equipment is according to the state and the described cluster control strategy of detected a plurality of described bearing layer equipments, and the normal described bearing layer equipment of selection mode is to realize the media flow transmission between described headend equipment and the described CE.
10. method as claimed in claim 9 is characterized in that described state comprises running status;
The state of a plurality of described bearing layer equipments of described detection comprises: to a plurality of described bearing layer equipment transmit status query requests; In the predetermined period after the transmit status query requests, do not receive the correct status poll response of running status of this bearing layer equipment of expression of described bearing layer equipment feedback, determine that the state of this bearing layer equipment is unusual by normally becoming.
11. method as claimed in claim 10 is characterized in that, described state further comprises load condition;
The state of a plurality of described bearing layer equipments of described detection further comprises: when the load capacity of carrying in described status poll response is higher than the normal predetermined threshold value of expression load, determine that the state of this bearing layer equipment is unusual by normally becoming; Perhaps, be higher than the load overload notification that initiatively reports when the expression load is preset second threshold value normally in load capacity, determine that the state of this bearing layer equipment is unusual by normally becoming according to described bearing layer equipment.
12., it is characterized in that described state further comprises Link State as claim 10 or 11 described methods;
The state of a plurality of described bearing layer equipments of described detection further comprises: notify or notified by the link failure that described headend equipment under the Media Stream of this bearing layer equipment carrying or described CE report according to the link failure that described bearing layer equipment reports, determine that the state of this bearing layer equipment is unusual by normally becoming.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102572357A (en) * | 2011-12-31 | 2012-07-11 | 中兴通讯股份有限公司 | Video monitoring system front end memory method and video monitoring system |
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| CN100469072C (en) * | 2005-09-29 | 2009-03-11 | 西安交通大学 | Multi-source flow media transmission QoS control method |
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| CN102572357A (en) * | 2011-12-31 | 2012-07-11 | 中兴通讯股份有限公司 | Video monitoring system front end memory method and video monitoring system |
| CN103916628A (en) * | 2013-01-08 | 2014-07-09 | 华为技术有限公司 | Video monitoring system, control method of video monitoring system and control server |
| CN103916628B (en) * | 2013-01-08 | 2017-10-27 | 华为技术有限公司 | Video monitoring system and its control method, control server |
| CN104349172A (en) * | 2013-08-02 | 2015-02-11 | 杭州海康威视数字技术股份有限公司 | Cluster management method of network video recorder and device thereof |
| CN104349172B (en) * | 2013-08-02 | 2017-10-13 | 杭州海康威视数字技术股份有限公司 | The cluster management method and its device of Internet video storage device |
| CN109121170A (en) * | 2017-06-26 | 2019-01-01 | 华为技术有限公司 | Method, apparatus, equipment and the system of session management |
| CN109121170B (en) * | 2017-06-26 | 2021-04-20 | 华为技术有限公司 | Session management method, device, equipment and system |
| US11071167B2 (en) | 2017-06-26 | 2021-07-20 | Huawei Technologies Co., Ltd. | Method, apparatus, system, and device for managing a session corresponding to multiple session management function network elements |
| US11606839B2 (en) | 2017-06-26 | 2023-03-14 | Huawei Technologies Co., Ltd. | Method, apparatus, system, and device for managing a session corresponding to multiple session management function network elements |
| CN108345854A (en) * | 2018-02-08 | 2018-07-31 | 腾讯科技（深圳）有限公司 | Information processing method, device, system based on image analysis and storage medium |
| CN111479095A (en) * | 2020-06-24 | 2020-07-31 | 腾讯科技（深圳）有限公司 | Service processing control system, method and device |
| CN111479095B (en) * | 2020-06-24 | 2020-10-02 | 腾讯科技（深圳）有限公司 | Service processing control system, method and device |
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