CN104469315B - Transmission of streams of video data method, apparatus based on CDN and system - Google Patents
Transmission of streams of video data method, apparatus based on CDN and system Download PDFInfo
- Publication number
- CN104469315B CN104469315B CN201410788861.0A CN201410788861A CN104469315B CN 104469315 B CN104469315 B CN 104469315B CN 201410788861 A CN201410788861 A CN 201410788861A CN 104469315 B CN104469315 B CN 104469315B
- Authority
- CN
- China
- Prior art keywords
- video data
- data stream
- service request
- mark
- monitor client
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Data Exchanges In Wide-Area Networks (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The application provides a kind of transmission of streams of video data method based on content distributing network CDN, is applied on monitoring frontend, which is characterized in that this method includes：The service request message that the monitor client equipment of CDN server forwarding is sent is received, the gap marker of the corresponding monitoring frontend of service request is carried in service request message；Video data stream is encapsulated according to gap marker, gap marker is carried in video data stream；Single session is established with CDN server, encapsulation video data stream to CDN server, and from CDN server to the Exit Road of monitor client equipment side by device forwards video data stream, so that outlet routing device sends video data stream according to gap marker to monitor client equipment.The application saves the expense carried out data transmission using CDN network, meanwhile, reduce network resource consumption.
Description
Technical field
This application involves technical field of video monitoring, more particularly to the transmission of streams of video data method, apparatus based on CDN and
System.
Background technology
In video monitoring system, in order to ensure the response speed of the video request sent out to user, CDN is usually utilized
(Content Delivery Network, content distributing network) network carries out video data transmission.
CDN network is one layer of intelligent virtual network on existing Internet basic, and basic ideas are to keep away as far as possible
Open be possible on internet influence data transmission bauds and stability bottleneck and link, make content transmission faster, it is more stable.
CDN network is oriented to the node server nearest from user by arranging node server everywhere in network, by the request of user, with
So that user is obtained required content nearby, improves the response speed asked user.
In video monitoring system, NVR (Network Video Recorder, network hard disk video recorder) can be according to its packet
IPC (IP Camera, the web camera) numbers of channels contained establish session with CDN server, and CDN network is according to session
What quantity was charged, therefore, with increasing for IPC, the session between NVR and CDN server can be more and more, corresponding to take
It is more and more with meeting, meanwhile, also result in the consumption of a large amount of Internet resources.
Invention content
In view of this, this application provides a kind of transmission of streams of video data method based on CDN, sets applied to front monitoring front-end
Standby upper, this method includes：
Receive the service request message that the monitor client equipment of CDN server forwarding is sent, the service request message
The middle gap marker for carrying the corresponding monitoring frontend of the service request；
Video data stream is encapsulated according to the gap marker, the gap marker is carried in the video data stream；
Single session is established with the CDN server, the encapsulation video data stream to the CDN server,
And from the CDN server to Exit Road video data stream described in device forwards of monitor client equipment side, so that
The outlet routing device sends the video data stream according to the gap marker to the monitor client equipment.
The transmission of streams of video data method based on CDN that present invention also provides a kind of being applied to the monitoring system based on CDN
In, this method includes：
Monitoring frontend receives the first service request report that the first monitor client equipment of CDN server forwarding is sent
Text carries the first passage of the corresponding monitoring frontend of first service request in the first service request message
Mark；
The monitoring frontend identifies encapsulation video data stream according to the first passage, is taken in the video data stream
It is identified with the first passage；
The monitoring frontend establishes single session with the CDN server, the encapsulation video data stream
To the CDN server, and from the CDN server to the Exit Road of monitor client equipment side described in device forwards
Video data stream；
The outlet routing device receives the video data stream；
The outlet routing device obtains the first passage mark from the video data stream；
The Exit Road is route in program request allocation table by equipment query and is closed with the presence or absence of the corresponding of first passage mark
It is list item, the routing program request allocation table stores first passage mark and asks the of the first passage video data stream
The correspondence of one monitor client equipment；
When the correspondence list item identified there are the first passage, the outlet routing device is monitored to described first
Client device sends the video data stream.
Present invention also provides a kind of, and the transmission of streams of video data device based on CDN is somebody's turn to do applied on monitoring frontend
Device includes：
Receiving unit, the service request message that the monitor client equipment for receiving CDN server forwarding is sent are described
The gap marker of the corresponding monitoring frontend of the service request is carried in service request message；
Encapsulation unit carries institute for encapsulating video data stream according to the gap marker in the video data stream
State gap marker；
Transmission unit, for establishing single session with the CDN server, the encapsulation video data stream to institute
CDN server is stated, and from the CDN server to Exit Road video described in device forwards of monitor client equipment side
Data flow, so that the outlet routing device sends the video counts according to the gap marker to the monitor client equipment
According to stream.
The transmission of streams of video data system based on CDN that present invention also provides a kind of, the system include：
Monitoring frontend, the first business that the first monitor client equipment for receiving CDN server forwarding is sent
Request message carries the of the corresponding monitoring frontend of first service request in the first service request message
One gap marker；Encapsulation video data stream is identified according to the first passage, it is logical to carry described first in the video data stream
Road identifies；Single session is established with the CDN server, the encapsulation video data stream to the CDN server, and
From the CDN server to Exit Road video data stream described in device forwards of monitor client equipment side；
Routing device is exported, for receiving the video data stream；It is logical that described first is obtained from the video data stream
Road identifies；With the presence or absence of the correspondence list item of first passage mark, the route point in query routing program request allocation table
Allocation table is broadcast to store the first passage mark and ask the first monitor client equipment of the first passage video data stream
Correspondence；When the correspondence list item identified there are the first passage, sent out to the first monitor client equipment
Send the video data stream.
The application carries out transmission of streams of video data between monitoring frontend and CDN server by single session, leads to
The gap marker for carrying monitoring frontend in video data stream is crossed, the video data stream in different channels is distinguished, to save
The expense of video data transmission is carried out using CDN network, meanwhile, reduce network resource consumption.
Description of the drawings
Fig. 1 is the monitoring system schematic diagram based on CDN in the prior art；
Fig. 2 is the monitoring system schematic diagram based on CDN in the application；
Fig. 3 is the process chart of the transmission of streams of video data method based on CDN in a kind of embodiment of the application；
Fig. 4 is the process chart of the transmission of streams of video data method based on CDN in the application another kind embodiment；
Fig. 5 is the underlying hardware schematic diagram of the transmission of streams of video data device based on CDN in a kind of embodiment of the application；
Fig. 6-1 is the structural schematic diagram of the transmission of streams of video data device based on CDN in the application one embodiment；
Fig. 6-2 is the structural schematic diagram of the transmission of streams of video data device based on CDN in the application another embodiment；
Fig. 7 is the structural schematic diagram of the transmission of streams of video data system based on CDN in the application one embodiment.
Specific implementation mode
To make the object, technical solution and advantage of the application be more clearly understood, referring to the drawings to herein described
Scheme is described in further detail.
Fig. 1 show the monitoring system schematic diagram based on CDN in the prior art.The monitoring system includes web camera
(IPC1~IPC5), network hard disc CD writer (NVR1, NVR2), CDN server, router (RT1, RT2) and host (PC1
~PC3).Wherein, web camera is responsible for the acquisition of video data, and video data is sent to network hard disc CD writer and is carried out
The storage and forwarding of video data.When host needs to check video data, can be needed by accessing the acquisition of network hard disc CD writer
The video data wanted, wherein each channel of network hard disc CD writer corresponds to a web camera.By taking PC1 as an example, when
When PC1 asks the fact of fact IPC1 and IPC2, which is forwarded to NVR1 by CDN server, NVR1 is according to the logical of request
Road quantity (IPC1 and IPC2) establishes two sessions N1_1 and N1_2 with CDN server, transmits the video and IPC2 of IPC1 respectively
Video be similarly also required to establish two sessions P1_1 and P1_2 between RT1 and PC1, realize the transmission of two-path video.
Since the charging of CDN network is charged according to the number of sessions established between the network equipment and CDN server,
Therefore, with the continuous expansion of monitoring system, IPC channel is stepped up, is inevitably resulted in due to meeting using prior art
The expense product that words quantity increases and brings increases, meanwhile, also consume a large amount of Internet resources.
In view of the above-mentioned problems, the embodiment of the present application proposes that a kind of transmission of streams of video data method based on CDN, this method exist
Monitoring frontend (for example, NVR) between CDN server by single session carry out transmission of streams of video data, by regarding
The gap marker that monitoring frontend is carried in frequency data stream, distinguishes the video data stream in different channels, and CDN is based on to realize
Transmission of streams of video data.
It is the monitoring system schematic diagram based on CDN in the application referring to Fig. 2.Specific implementation process is this Shen referring to Fig. 3
Please one embodiment flow chart of the transmission of streams of video data method based on CDN, the embodiment is from monitoring frontend side to base
It is described in the transmission of streams of video data process of CDN.
Step 310, the service request message that the monitor client equipment of CDN server forwarding is sent, the business are received
The gap marker of the corresponding monitoring frontend of the service request is carried in request message.
In monitoring system, service request is usually initiated by monitor client equipment.Video counts are being carried out using CDN network
According in the monitoring system of steaming transfer, CDN server preserves the topological structure of entire monitoring system, and monitor client equipment passes through
CDN server carries out service message interaction with monitoring frontend and transmission of streams of video data, each IPC are set with front monitoring front-end
Standby channel corresponds, for example, IPC1 is connected on the channel T1 of NVR1；IPC2 is connected on the channel T2 of NVR1；IPC3
It is connected on the channel T3 of NVR1.Monitor client equipment to the access of IPC by read the video data of NVR corresponding channels come
It realizes.
First, monitor client equipment sends service request message to CDN server, and inside the service request message
Message body (between usual monitor client equipment and CDN server using private message communicate) in carry the monitoring asked before
The gap marker of end equipment, so that monitoring frontend can be identified with Acquisition channel.This is because service request message is passing through
When CDN server forwards, CDN server may change the outer envelope of service request message, so, pass through service request message
Inside carries gap marker, it is ensured that monitoring frontend obtains lane identification information.
After CDN server receives the service request message of monitor client equipment transmission, which is turned
Issue the monitoring frontend of monitor client device request.Monitoring frontend obtains business from the service request message and asks
Corresponding gap marker is sought, step 320 is executed.
Step 320, video data stream is encapsulated according to the gap marker, the channel is carried in the video data stream
Mark.
Video data corresponding with the channel is packaged by monitoring frontend according to the gap marker of acquisition, and will
The gap marker is encapsulated in video data stream.When video data encapsulates, UDP (User Datagram may be used
Protocol, User Datagram Protocol) it is carried, and after completing UDP encapsulation, IP layers of encapsulation are carried out, in the packet header IP
Gap marker is added in Option (option) field.For example, when the channels T2 to NVR1 carry out video data encapsulation, by channel
The T2 of mark NVR1 is added to the Option fields in the packet header IP.
Step 330, single session is established with the CDN server, the encapsulation video data stream to the CDN
Server, and from the CDN server to Exit Road video data described in device forwards of monitor client equipment side
Stream, so that the outlet routing device sends the video data according to the gap marker to the monitor client equipment
Stream.
Monitoring frontend is after completing video data stream encapsulation, without being established with CDN server according to the difference in channel
The video data stream of multiple sessions, different channels can be sent to CDN server by same session.CDN server is by video
Stream compression issues the outlet routing device of monitor client side, by outlet routing device according to the prison carried in video data stream
The gap marker of control headend equipment decides whether to monitor client device forwards.
In the step 310, in addition to carrying the logical of monitoring frontend in the service request message that monitoring frontend receives
Road identifies, and also carries service request type, monitor client mark and ageing time, wherein monitor client mark can
To be the information for uniquely representing the monitor client equipment, such as IP (Internet Protocol, Internet protocol) address, MAC
(Media Access Control, medium access control) address, CPU (Central Processing Unit, central processing
Device) string number etc..In order to keep description of greater clarity in the embodiment of the present application, the monitor client equipment marked in Fig. 2 is used
Name be referred to as client identification.For example, PC1 asks the fact of IPC2, then the monitor client in service request message identifies
For PC1.
After monitoring frontend obtains above- mentioned information, service request type is first determined whether, according to different judging results, divide
Following two situations are handled：
When service request type is order request, by monitor client mark, pair of gap marker and ageing time
It should be related to that list item is added in front end program request allocation table.By taking NVR1 as an example, when NVR1 receives the request program request IPC2 of PC1 transmissions
Service request message after, Acquisition channel is identified as the T2 of NVR1 from business request message, and client identification PC1 is then protected
The correspondence of the T2 and PC1 of NVR1 are deposited, as shown in table 1.
Table 1
Table 1 is front end program request allocation table example.Wherein, the last item list item is the correspondence list item of PC1 program requests IPC2.
When monitoring frontend receives new order request every time, front end program request allocation table is updated, with the reality in each channel of determination
Service condition.
In the embodiment of the present application, monitoring frontend can be by way of periodic detection front end program request allocation table, to preceding
Endpoint is broadcast the corresponding video data of the gap marker in allocation table and is packaged.It chooses successively each in front end program request allocation table
A gap marker.Video data stream encapsulation is carried out respectively according to each gap marker, and is carried and corresponded in video data stream
Gap marker.By taking table 1 as an example, there are order requests by the channel T1 and T2 of NVR1, and NVR1 sequences choose T1 and T2, by channel T1
It is encapsulated respectively with the video data of T2, the Option fields in the packet header IP of the video data stream of T1 add gap marker NVR1's
T1；In the T2 of the Option fields addition gap marker NVR1 in the packet header IP of the video data stream of T2.
When service request type is to break request, monitoring frontend inquires front end program request allocation table.Delete forward terminal
The correspondence list item of monitor client mark and gap marker in allocation table is broadcast, current endpoint is broadcast in allocation table without gap marker
Corresponding table item when, i.e., no monitor client equipment program request channel when, monitoring frontend stops to the video in the channel
Data encapsulate, and no longer send the corresponding video data stream in the channel to CDN server.
Certainly, if monitor client equipment breaks request due to abnormal without sending, can also be by inspecting periodically before
Endpoint broadcasts the mode of allocation table, deletes the correspondence list item of the monitor client mark and gap marker that reach ageing time.
This is because monitor client equipment can periodically send order request, and ageing time is carried in order request, if monitoring
Headend equipment does not receive the order request of monitor client equipment transmission again in ageing time, is not received by yet and breaks
Request, then, monitoring frontend can delete the corresponding table item in front end program request allocation table after ageing time arrival.Currently
When endpoint broadcasts the corresponding table item without gap marker in allocation table, monitoring frontend stops encapsulating the video data in the channel,
No longer the corresponding video data stream in the channel is sent to CDN server.
By foregoing description it is found that increasing or decreasing with demand (telecommunication) service, the list item in front end program request allocation table can be sent out
Changing.Monitoring frontend can increase or reduce regarding for respective channel according to the gap marker in front end program request allocation table
Frequency data stream.The corresponding video data of gap marker in front end program request allocation table is packaged, without the channel of program request
Video data will not be sent to monitor client equipment.For example, there is no the order request of the T3 of channel NVR1 in table 1, therefore,
The corresponding video data in the channels T3 of NVR1 will not be sent to monitor client equipment, so as to avoid the wave of Internet resources
Take.
It is another embodiment flow chart of transmission of streams of video data method of the application based on CDN, the reality referring to Fig. 4
Example is applied the transmission of streams of video data process based on CDN is described from the angle of the monitoring system based on CDN.
Step 410, monitoring frontend receives the first industry that the first monitor client equipment of CDN server forwarding is sent
It is engaged in request message, carries the corresponding monitoring frontend of first service request in the first service request message
First passage identifies.
Referring to the description of step 310, details are not described herein.
Step 420, the monitoring frontend identifies encapsulation video data stream, the video counts according to the first passage
It is identified according to the first passage is carried in stream.
Referring to the description of step 320, details are not described herein.
Step 430, the monitoring frontend establishes single session with the CDN server, the encapsulation video counts
It is sent to the CDN server according to stream, and from the CDN server to the outlet routing device of monitor client equipment side
Forward the video data stream.
Referring to the description of step 330, details are not described herein.
Step 440, the outlet routing device receives the video data stream.
Step 450, the outlet routing device obtains the first passage mark from the video data stream.
In the foregoing written description it is found that monitoring frontend can be identified first passage by the Option fields in the packet header IP
It is added in the video data stream of encapsulation.Outlet routing device can identify the packet header IP as three-layer equipment, from Option fields
Middle acquisition first passage mark.
Step 460, the Exit Road is route in program request allocation table by equipment query and is identified with the presence or absence of the first passage
Correspondence list item, the routing program request allocation table stores the first passage mark and asks the first passage video counts
According to the correspondence of the first monitor client equipment of stream.
Maintain a routing program request allocation table in outlet routing device, having recorded this in the routing program request allocation table goes out
The program request record of all monitor client equipment under mouth routing device.
| Monitor client identifies | Gap marker | Ageing time |
| PC1 | The T1 of NVR2 | 5s |
| PC2 | The T1 of NVR1 | 5s |
Table 2
Table 2 is the routing program request allocation table example exported on routing device RT1.Wherein, first list item indicates PC1 requests
The video data in the channels T1 of program request NVR2；Article 2 list item indicates the video data in the channels T1 of PC2 request program requests NVR1.
Due to having existed above-mentioned routing program request allocation table in outlet routing device, outlet routing device is receiving
When the video data stream returned to monitoring frontend, inquiry can be identified according to the first passage that is obtained from video data stream
It is route program request allocation table, judges whether there is the first monitor client equipment program request first passage under the outlet routing device
Video data.
Step 470, when the correspondence list item identified there are the first passage, the outlet routing device is to described
First monitor client equipment sends the video data stream.
When routeing the correspondence list item identified there are first passage in program request allocation table, that is, exporting has under routing device
This channel of first monitor client equipment program request, then export routing device to the first monitor client equipment send this first
The video data stream in channel.When exporting routing device to the first monitoring customer equipment transmission video data stream, even if the first prison
The client device program request video data in multiple channels is controlled, between outlet routing device and the first monitor client equipment
It only needs to establish a session, the video data of multichannel can be sent to the first monitor client by this session and set
It is standby.First monitor client equipment can be identified by the first passage in video data stream and distinguish different video datas.
When routeing in program request allocation table there is no when the correspondence list item of first passage mark, that is, export under routing device
There is no this channel of the first monitor client equipment program request, then egress router will not forward the video data stream to Intranet, from
And avoid the waste of Intranet resource.
Outlet routing device updates road when receiving the first service request message of the first monitor client equipment transmission
By program request allocation table.First monitor client equipment not only the inside of the first service request message carry service request type,
The information such as the first monitor client mark, first passage mark and ageing time, also carry above- mentioned information in the packet header IP
Option fields.Routing device is exported as three-layer equipment by identifying that the Option fields in the packet header IP obtain above- mentioned information.
First determine whether service request type, according to different judging results, a point following two situations are handled：
When service request type be the first order request when, outlet routing device the first monitor client is identified, first
Gap marker and the correspondence list item of the ageing time are added in routing program request allocation table, to receive monitoring
When the video data stream that headend equipment returns, corresponding first passage list item is inquired, video data stream is transmitted to the first monitoring visitor
Family end equipment.
When service request type is to break request, query routing program request allocation table finds the first passage that request is broken
Mark will ask the first monitor client broken mark and the correspondence list item of first passage mark to be distributed from routing program request
It is deleted in table, outlet routing device no longer sends the video data stream of first passage to the first monitor client equipment.
It certainly, can also be by periodically examining if the first monitor client equipment breaks request due to abnormal without sending
Routing program request allocation table is looked into, the first monitor client mark in the routing program request allocation table for reaching ageing time is deleted and leads to first
The correspondence list item of road mark.Concrete processing procedure can be found in the description of aforementioned monitoring frontend side, and details are not described herein.
It, can be between outlet routing device and CDN server into one in order to further increase the utilization rate of Internet resources
Step optimization.In the foregoing written description, outlet routing device established in route program request allocation table the first monitor client equipment and
The correspondence list item of first passage carries out the transmission of first passage video data.At this point, if outlet routing device receives
The second service request message that second monitor client equipment is sent, and the second channel of the second service request message request regards
Frequency and the first passage video of the first monitor client device request are located on the same monitoring frontend, then Exit Road is by setting
The standby first passage mark that the monitoring frontend can be obtained by query routing program request allocation table, which is identified
It is added in the second service request message and is sent to CDN server.
The second service request message is sent to monitoring frontend by CDN server, and monitoring frontend is according to first
Gap marker and second channel mark carry out video data stream encapsulation and return to CDN server respectively, and CDN server can pass through
The second session established with outlet routing device is by above-mentioned video data stream to egress router.Second session is
Two monitor client equipment are initiated to establish when the second service request.
After outlet routing device receives above-mentioned video data stream, inquired according to the gap marker carried in video data stream
It is route program request allocation table, carries out video data stream forwarding.It should be noted that outlet routing device is asked receiving the second business
When seeking message, the routing program request allocation table locally preserved can be updated, by taking the routing program request allocation table on RT1 as an example, such as 3 institute of table
Show.
| Monitor client identifies | Gap marker | Ageing time |
| PC1 | The T1 of NVR1 | 5s |
| PC2 | The T2 of NVR1 | 5s |
Table 3
Wherein, first list item is established first passage mark and the first monitor client mark in outlet routing device
The correspondence list item example of knowledge；After Article 2 list item receives the second service request message for outlet routing device, foundation
Second channel identifies the example with the correspondence list item of the second monitor client mark.As can be known from Table 3, PC1 is to NVR1
T1 channel requests cross video data stream, at this point, PC2 also initiates video request to NVR1, the T2 that the channel of request is NVR1 is logical
Road.
When exporting routing device and receiving the video data stream for carrying first passage mark, query routing program request allocation table
The correspondence list item of middle first passage mark, gives the video data stream of first passage to the first monitor client equipment；
When exporting routing device and receiving the video data stream for carrying second channel mark, second is logical in query routing program request allocation table
The correspondence list item of road mark gives the video data stream of second channel to the second monitor client equipment.
Since monitor client equipment can periodically send service request message, when outlet, routing device receives first again
When the first service request message that monitor client equipment is sent, the first service request message no longer is sent to CDN server,
After a period of time has passed, the first conversation between CDN server and outlet routing device, first session are the first prison
Control client device initiates to establish when the first service request.After the first conversation, CDN server with outlet routing device it
Between only exist second session video data stream of same monitoring frontend be transmitted, to reduce CDN service
Resource consumption between device and outlet routing device.
Now still by taking Fig. 2 as an example, the transmission of streams of video data processing procedure based on CDN is discussed in detail.
In Fig. 2, IPC1~IPC3 is connected on the channels T1~T3 of NVR1, and IPC4, IPC5 are connected to NVR2
The channel T1, T2 on.Assuming that the fact of PC1 request program requests IPC1, PC1 send service request message to CDN server, PC1 exists
Message body (being communicated using private message between usual monitor client equipment and CDN server) inside the service request message
In and the packet header IP Option fields add respectively service request type, monitor client mark, monitoring frontend it is logical
Road identifies.Wherein, service request type is order request, and monitor client is identified as PC1, and gap marker is the T1 of NVR1.
The service request message arrives first at outlet routing device RT1, RT1 can only identify IP layers as three-layer network appliance
Therefore information can get the industry by intercepting the Option fields in the packet header IP of service request message from Option fields
The service request type of business request message is order request, and monitor client is identified as PC1, and gap marker is the T1 of NVR1, more
New routing program request allocation table, the list item of the order request is added in routing program request allocation table, referring to the last item table of table 4
.
Table 4
Service request message is sent to CDN server by RT1, and the service request message is forwarded from CDN server to NVR1.
Since above-mentioned identification information is encapsulated in the message body inside service request message by PC1, so, even if CDN server is changed
The outer envelope of service request message, NVR1 still can obtain above-mentioned identification information inside business request message.
After NVR1 receives the service request message, the business is got from the message content of the service request message and is asked
It is order request to seek the service request type of message, and monitor client is identified as PC1, and gap marker is the T1 of NVR1, and update is originally
The front end program request allocation table that ground preserves, referring to the last item list item of table 5.
Table 5
In the present embodiment, NVR1 inspects periodically the gap marker in table 5, is packaged to the video data in each channel.
When carrying out video data encapsulation, UDP may be used and carried, and needs the video data in different channels being encapsulated in not
In same UDP messages, the video data of single channel can be included to ensure each data packet only.After completing UDP encapsulation, carry out
IP layers of encapsulation, and add gap marker in the Option fields in the packet header IP.
NVR1 is first packaged the video data in the channels T2, in the Option fields addition of the video data stream of encapsulation
The T2 of gap marker NVR1；The video data in the channels T1 is packaged, is added in the Option fields of the video data stream of encapsulation
Add the T1 of gap marker NVR1.As shown in Figure 2, there are one the channels T3 by NVR1, but the channel does not occur in table 5,
That is the channels T3 are by any PC program requests, so, NVR1 is without being packaged the video data in the channels T3.
As can be seen from the above description, NVR1 is to carry out video data encapsulation according to front end program request allocation table.With demand (telecommunication) service
Increase or decrease, the list item in front end program request allocation table can change, and NVR1 can pass through periodic detection front end program request point
Mode with table increases or reduces the video data stream of respective channel.Assuming that the program request list item in the channels T3 is increased in table 5 again,
So, after NVR1 detects the list item, the video data in the channels T3 is also packaged.
After completing to the encapsulation of channel video data, NVR1 with the single session that CDN server is established by that will own
Video data stream is forwarded to CDN server from CDN server to PC.
The video data stream of CDN server forwarding arrives first at outlet routing device.Assuming that RT1 is firstly received NVR1's
The video data stream in the channels T2, RT1 intercept the Option fields in the packet header IP of the video data stream, are obtained from the Option fields
The T2 that gap marker to the video data stream is NVR1.Query routing program request allocation table (table 4), in the routing program request allocation table
In do not have the channel program request record, therefore, ignore the video data stream, not to Intranet forward.
When RT1 receives the video data stream in the channels T1 of NVR1, RT1 intercepts the Option fields of the video data stream,
The gap marker that the video data stream is got from the Option fields is the T1 of NVR1.Query routing program request allocation table (table 4),
The program request record in the channel can be found in the routing program request allocation table, then RT1 is identified logical according to the monitor client in table 4
The video data stream is transmitted to PC1 by the session crossed between RT1 and PC1.Assuming that the PC1 also program requests fact of IPC4, then RT1
When receiving the video data stream in the channels T1 of NVR2, also can by same session by video data stream to PC1, PC1 roots
The video data in different channels is distinguished according to the gap marker in video data stream.
The above process is the processing procedure of PC1 program requests IPC1 facts.When PC1 stops program request IPC1, still can pass through
Service request message is sent to realize, the difference is that the service request type in service request message is to break request.
After RT1 receives service request message, the service request of the service request message is got from Option fields
Type is to break request, and monitor client is identified as PC1, and gap marker is the T1 of NVR1, therefore, deletes the last item of table 4
List item will not forward the video data in the channel to PC1 again.
After NVR1 receives service request message, the business is got from the message content of the service request message and is asked
It is to break request to seek the service request type of message, and monitor client is identified as PC1, and gap marker is the T1 of NVR1, then deletes
The last item list item in table 5.Since there is also other monitor clients marks under the channels T1, so, NVR1 still can be logical to T1
The video data in road is packaged and sends.But since RT1 deletes the list item in the channel, so the video counts in the channel
PC1 will not be reached according to stream.
When NVR1 or RT1 is not received by the order request of PC1 transmissions in ageing time due to Network Abnormal etc.
Or when breaking request, then the list item in the channels T1 is deleted according to ageing time respectively, stops the transmission of the video data stream in the channel.
It is corresponding with the embodiment of transmission of streams of video data method based on CDN of aforementioned monitoring frontend side, this Shen
The embodiment of transmission of streams of video data device based on CDN is please also provided.
The embodiment of transmission of streams of video data device of the application based on CDN can be applied on monitoring frontend.Dress
Setting embodiment can also be realized by software realization by way of hardware or software and hardware combining.It is implemented in software to be
Example is by the CPU of equipment where it by corresponding calculating in nonvolatile memory as the device on a logical meaning
Machine program instruction reads what operation in memory was formed.For hardware view, as shown in figure 5, being the application regarding based on CDN
A kind of hardware structure diagram of equipment where frequency data stream transmitting device in addition to CPU shown in fig. 5, memory and non-volatile is deposited
Except reservoir, the equipment in embodiment where device usually can also include other hardware.
Fig. 6-1 is please referred to, the structure for the transmission of streams of video data device based on CDN in the application one embodiment is shown
It is intended to.The transmission of streams of video data device based on CDN includes receiving unit 601, encapsulation unit 602 and transmission unit 603,
Wherein：
Receiving unit 601, the service request message that the monitor client equipment for receiving CDN server forwarding is sent,
The gap marker of the corresponding monitoring frontend of the service request is carried in the service request message；
Encapsulation unit 602 is carried for encapsulating video data stream according to the gap marker in the video data stream
The gap marker；
Transmission unit 603, for establishing single session with the CDN server, the encapsulation video data stream
To the CDN server, and from the CDN server to the Exit Road of monitor client equipment side described in device forwards
Video data stream, so that the outlet routing device is regarded according to the gap marker to described in monitor client equipment transmission
Frequency data stream.
Further, the encapsulation unit 602 carries the gap marker in the video data stream, specially：
The option Option fields in the packet header Internet protocol IP of the video data stream carry the gap marker.
Fig. 6-2 is please referred to, is the structure of the transmission of streams of video data device based on CDN in the application another embodiment
Schematic diagram.The transmission of streams of video data device based on CDN further includes acquiring unit 604, judges list on the basis of Fig. 6-1
Member 605 and processing unit 606, wherein：
Acquiring unit 604, for obtained from the service request message service request type, monitor client mark with
And ageing time；
Judging unit 605, for judging the service request type；
Processing unit 606, for when the service request type is order request, the monitor client to be identified,
The gap marker and the correspondence list item of the ageing time are added in front end program request allocation table；When the business is asked
It is when breaking request, to inquire the front end program request allocation table to seek type；It deletes and monitors visitor described in the front end program request allocation table
Family end identifies the correspondence list item with the gap marker, when pair without the gap marker in the front end program request allocation table
When answering list item, the monitoring frontend stops encapsulation and sends the corresponding video of the gap marker with to the CDN server
Data flow；Alternatively, inspecting periodically the front end program request allocation table, delete in the front end program request allocation table for reaching ageing time
The correspondence list item of the monitor client mark and the gap marker, when in the front end program request allocation table without described logical
When road identifies corresponding table item, the monitoring frontend stops encapsulation and sends the gap marker pair to the CDN server
The video data stream answered.
The embodiment of the transmission of streams of video data device based on CDN shown in above-mentioned Fig. 6-1 and Fig. 6-2, should be based on CDN's
Transmission of streams of video data device is applied on monitoring frontend, and specific implementation process can be found in aforementioned monitoring frontend side
Embodiment of the method explanation, details are not described herein.
With aforementioned applications in the embodiment of transmission of streams of video data method based on CDN of monitoring system corresponding, this Shen
The embodiment of transmission of streams of video data system based on CDN is please also provided.
Referring to FIG. 7, for the structural representation of the transmission of streams of video data system based on CDN in the application one embodiment
Figure.The transmission of streams of video data system based on CDN includes monitoring frontend 71 and exports routing device 72, wherein：
Monitoring frontend 71, the first industry that the first monitor client equipment for receiving CDN server forwarding is sent
It is engaged in request message, the corresponding monitoring frontend of first service request 71 is carried in the first service request message
First passage mark；Encapsulation video data stream is identified according to the first passage, described the is carried in the video data stream
One gap marker；Single session is established with the CDN server, the encapsulation video data stream to the CDN service
Device, and forward the video data stream from the CDN server to the outlet routing device 72 of monitor client equipment side；
Routing device 72 is exported, for receiving the video data stream；Described first is obtained from the video data stream
Gap marker；With the presence or absence of the correspondence list item of first passage mark, the routing in query routing program request allocation table
Program request allocation table stores the first passage mark and the first monitor client of the first passage video data stream is asked to set
Standby correspondence；When the correspondence list item identified there are the first passage, to the first monitor client equipment
Send the video data stream.
Further,
The outlet routing device 72 is additionally operable to receive the first service request that the first monitor client equipment is sent
Message carries service request type, the first monitor client mark, the first passage mark in the first service request message
Knowledge and the ageing time；Judge the service request type；It, will when the service request type is the first order request
The correspondence list item of the first monitor client mark, first passage mark and the ageing time is added to road
By in program request allocation table；When the service request type is to break request, the routing program request allocation table is inquired；Described in deletion
It route the correspondence list item of the first monitor client mark described in program request allocation table and first passage mark；Alternatively,
The routing program request allocation table is inspected periodically, deletion reaches the first monitoring described in the routing program request allocation table of ageing time
The correspondence list item of client identification and first passage mark.
Further,
The outlet routing device 72 is additionally operable to receive the second monitoring after receiving the first service request message
The second service request message that client device is sent to the monitoring frontend 71 inquires the routing program request allocation table,
The second channel of the corresponding monitoring frontend of second service request 71 is carried in the second service request message
Mark；The first passage mark of the monitoring frontend 71 is obtained from the routing program request allocation table；Described first is led to
Road mark is added in the second service request message；The second service request message is sent to the CDN server, by
The CDN server forwards the second service request message to the monitoring frontend 71, so that the front monitoring front-end is set
It is sent to the CDN clothes after encapsulating video data stream respectively according to first passage mark and second channel mark for 71
It is engaged in device, the CDN server is by the second session for being established with the outlet routing device 72 by the video data stream
To the outlet routing device 72；The video data stream is received, the first passage mark is carried in the video data stream
It is identified with the second channel；Inquire the routing program request allocation table；It is logical according to described in the routing program request allocation table first
The correspondence list item of road mark gives the video data stream of the first passage to the first monitor client equipment；
According to the correspondence list item of second channel mark described in the routing program request allocation table, by the video counts of the second channel
It is sent to the second monitor client equipment according to stream；When receiving the first service request message again, no longer to institute
State CDN server and send the first service request message, the corresponding CDN server of the first service request message with
The first session that the outlet routing device 72 is established is cancelled.
The embodiment of the transmission of streams of video data system based on CDN shown in above-mentioned Fig. 7, specific implementation process can be found in
The explanation of transmission of streams of video data embodiment of the method based on CDN of the aforementioned applications in monitoring system, details are not described herein.
As can be seen that the application takes in monitoring frontend and CDN from the embodiment of above method, device and system
It is engaged in carrying out transmission of streams of video data by single session between device, by carrying the logical of monitoring frontend in video data stream
Road identifies, and distinguishes the video data stream in different channels, to save the expense for carrying out video data transmission using CDN network,
Meanwhile reducing network resource consumption.
The foregoing is merely the preferred embodiments of the application, not limiting the application, all essences in the application
With within principle, any modification, equivalent substitution, improvement and etc. done should be included within the scope of the application protection god.
Claims (12)
1. a kind of transmission of streams of video data method based on content distributing network CDN is applied on NVR, which is characterized in that the party
Method includes：
The service request message that the monitor client equipment of CDN server forwarding is sent is received, is taken in the service request message
Gap marker with the corresponding NVR of the service request；
Video data stream is encapsulated according to the gap marker, the gap marker is carried in the video data stream；
Single session is established with the CDN server, the encapsulation video data stream to the CDN server, and by
Exit Road video data stream described in device forwards from the CDN server to monitor client equipment side so that described
It exports routing device and the video data stream is sent to the monitor client equipment according to the gap marker.
2. the method as described in claim 1, which is characterized in that described to carry the channel mark in the video data stream
Know, specially：
Option Option fields in the packet header Internet protocol IP of the video data stream carry the gap marker.
3. the method as described in claim 1, which is characterized in that also carried in the service request message service request type,
Monitor client identifies and ageing time, the method further include：
When obtaining the service request type, monitor client mark and the aging from the service request message
Between；
Judge the service request type；
When the service request type is order request, by monitor client mark, the gap marker and described
The correspondence list item of ageing time is added in front end program request allocation table；
When the service request type is to break request, the front end program request allocation table is inquired；
The correspondence list item for deleting the mark and the gap marker of monitor client described in the front end program request allocation table, when
In the front end program request allocation table when corresponding table item without the gap marker, the NVR stops encapsulation and to the CDN service
Device sends the corresponding video data stream of the gap marker；
Alternatively,
The front end program request allocation table is inspected periodically, deletion reaches to be monitored described in the front end program request allocation table of ageing time
The correspondence list item of client identification and the gap marker, when in the front end program request allocation table without the gap marker pair
When answering list item, the NVR stops encapsulation and sends the corresponding video data stream of the gap marker with to the CDN server.
4. a kind of transmission of streams of video data method based on CDN is applied in the monitoring system based on CDN, which is characterized in that should
Method includes：
NVR receives the first service request message that the first monitor client equipment of CDN server forwarding is sent, first industry
The first passage mark of the corresponding NVR of first service request is carried in business request message；
The NVR identifies encapsulation video data stream according to the first passage, and it is logical to carry described first in the video data stream
Road identifies；
The NVR establishes single session with the CDN server, the encapsulation video data stream to the CDN service
Device, and from the CDN server to Exit Road video data stream described in device forwards of monitor client equipment side；
The outlet routing device receives the video data stream；
The outlet routing device obtains the first passage mark from the video data stream；
The Exit Road is route in program request allocation table by equipment query with the presence or absence of the mapping table of first passage mark
, the routing program request allocation table stores the first passage mark and asks the first of the first passage video data stream to supervise
Control the correspondence of client device；
When the correspondence list item identified there are the first passage, the outlet routing device monitors client to described first
End equipment sends the video data stream.
5. method as claimed in claim 4, which is characterized in that the method further includes：
The first service request message for exporting routing device and receiving the first monitor client equipment transmission, described first
When carrying service request type, the first monitor client mark, first passage mark and aging in service request message
Between；
The outlet routing device judges the service request type；
When the service request type is the first order request, the outlet routing device is by the first monitor client mark
Know, the first passage identifies and the correspondence list item of the ageing time is added in routing program request allocation table；
When the service request type is to break request, the Exit Road route program request allocation table described in equipment query；
The outlet routing device deletes the first monitor client mark described in the routing program request allocation table and described first
The correspondence list item of gap marker；
Alternatively,
The Exit Road route program request allocation table described in regular inspections of equipment, deletes the routing program request for reaching ageing time
First monitor client described in allocation table identifies the correspondence list item with first passage mark.
6. method as claimed in claim 5, which is characterized in that the method further includes：
Received after the outlet routing device receives the first service request message the second monitor client equipment to
The second service request message that the NVR is sent is inquired the routing program request allocation table, is taken in the second service request message
Second channel mark with the corresponding NVR of second service request；
The outlet routing device obtains the first passage mark of the NVR from the routing program request allocation table；
First passage mark is added in the second service request message by the outlet routing device；
The outlet routing device sends the second service request message to the CDN server, from the CDN server to
The NVR forwards the second service request message, so that the NVR is according to first passage mark and the second channel
Mark is sent to the CDN server after encapsulating video data stream respectively, the CDN server by with the Exit Road by setting
Standby the second session established gives the video data stream to the outlet routing device；
The outlet routing device receives the video data stream, carried in the video data stream first passage mark and
The second channel mark；
The Exit Road route program request allocation table described in equipment query；
The outlet routing device, will according to the correspondence list item of first passage mark described in the routing program request allocation table
The video data stream of the first passage gives the first monitor client equipment；
The outlet routing device, will according to the correspondence list item of second channel mark described in the routing program request allocation table
The video data stream of the second channel gives the second monitor client equipment；
When the outlet routing device receives the first service request message again, no longer sent out to the CDN server
Send the first service request message, the corresponding CDN server of the first service request message and the Exit Road by
The first session that equipment is established is cancelled.
7. a kind of transmission of streams of video data device based on content distributing network CDN is applied on NVR, which is characterized in that the dress
Set including：
Receiving unit, the service request message that the monitor client equipment for receiving CDN server forwarding is sent, the business
The gap marker of the corresponding NVR of the service request is carried in request message；
Encapsulation unit carries described logical for encapsulating video data stream according to the gap marker in the video data stream
Road identifies；
Transmission unit, for establishing single session with the CDN server, the encapsulation video data stream described in
CDN server, and from the CDN server to Exit Road video counts described in device forwards of monitor client equipment side
According to stream, so that the outlet routing device sends the video data according to the gap marker to the monitor client equipment
Stream.
8. device as claimed in claim 7, it is characterised in that：
The encapsulation unit carries the gap marker in the video data stream, specially：
Option Option fields in the packet header Internet protocol IP of the video data stream carry the gap marker.
9. device as claimed in claim 7, which is characterized in that described device further includes：
Acquiring unit, for obtaining service request type, monitor client mark and aging from the service request message
Time；
Judging unit, for judging the service request type；
Processing unit, for when the service request type is order request, the monitor client being identified, the channel
The correspondence list item of mark and the ageing time is added in front end program request allocation table；When the service request type is
When breaking request, the front end program request allocation table is inquired；Delete the mark of monitor client described in the front end program request allocation table
With the correspondence list item of the gap marker, when the corresponding table item without the gap marker in the front end program request allocation table
When, the NVR stops encapsulation and sends the corresponding video data stream of the gap marker with to the CDN server；Alternatively, periodically
Check that the front end program request allocation table, deletion reach monitor client mark described in the front end program request allocation table of ageing time
Know with the correspondence list item of the gap marker, when in the front end program request allocation table without the gap marker corresponding table item
When, the NVR stops encapsulation and sends the corresponding video data stream of the gap marker with to the CDN server.
10. a kind of transmission of streams of video data system based on CDN, which is characterized in that the system includes：
NVR, the first service request message that the first monitor client equipment for receiving CDN server forwarding is sent are described
The first passage mark of the corresponding NVR of first service request is carried in first service request message；According to described
One gap marker encapsulates video data stream, and the first passage mark is carried in the video data stream；With the CDN server
Single session is established, the encapsulation video data stream to the CDN server, and from the CDN server to described
Exit Road video data stream described in device forwards of monitor client equipment side；
Routing device is exported, for receiving the video data stream；The first passage mark is obtained from the video data stream
Know；With the presence or absence of the correspondence list item of first passage mark, the routing program request point in query routing program request allocation table
Pair of the first passage mark and the first monitor client equipment for asking the first passage video data stream is stored with table
It should be related to；When the correspondence list item identified there are the first passage, institute is sent to the first monitor client equipment
State video data stream.
11. system as claimed in claim 10, which is characterized in that the system also includes：
The outlet routing device is additionally operable to receive the first service request message that the first monitor client equipment is sent,
Carried in the first service request message service request type, the first monitor client mark, first passage mark with
And ageing time；Judge the service request type；When the service request type is the first order request, by described first
The correspondence list item of monitor client mark, first passage mark and the ageing time is added to routing program request point
With in table；When the service request type is to break request, the routing program request allocation table is inquired；Delete the routing program request
First monitor client described in allocation table identifies the correspondence list item with first passage mark；Alternatively, inspecting periodically
The routing program request allocation table, deletion reach the first monitor client mark described in the routing program request allocation table of ageing time
Know the correspondence list item with first passage mark.
12. system as claimed in claim 10, which is characterized in that the system also includes：
The outlet routing device is additionally operable to receive the second monitor client after receiving the first service request message
The second service request message that equipment is sent to the NVR inquires the routing program request allocation table, the second service request report
The second channel mark of the corresponding NVR of second service request is carried in text；It is obtained from the routing program request allocation table
The first passage of the NVR is taken to identify；First passage mark is added in the second service request message；To described
CDN server sends the second service request message, forwards second business to ask from the CDN server to the NVR
Message is sought, so that after the NVR encapsulates video data stream respectively according to first passage mark and second channel mark
It is sent to the CDN server, the CDN server is regarded by the second session established with the outlet routing device by described in
Frequency data stream is sent to the outlet routing device；The video data stream is received, described is carried in the video data stream
One gap marker and second channel mark；Inquire the routing program request allocation table；According in the routing program request allocation table
The correspondence list item of the first passage mark, by the video data stream of the first passage to the first monitoring visitor
Family end equipment；According to the correspondence list item of second channel mark described in the routing program request allocation table, described second is led to
The video data stream in road gives the second monitor client equipment；When receiving the first service request message again
When, the first service request message no longer is sent to the CDN server, the first service request message is corresponding described
The first session that CDN server is established with the outlet routing device is cancelled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410788861.0A CN104469315B (en) | 2014-12-17 | 2014-12-17 | Transmission of streams of video data method, apparatus based on CDN and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410788861.0A CN104469315B (en) | 2014-12-17 | 2014-12-17 | Transmission of streams of video data method, apparatus based on CDN and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104469315A CN104469315A (en) | 2015-03-25 |
| CN104469315B true CN104469315B (en) | 2018-09-14 |
Family
ID=52914590
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410788861.0A Active CN104469315B (en) | 2014-12-17 | 2014-12-17 | Transmission of streams of video data method, apparatus based on CDN and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104469315B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107547417A (en) * | 2016-06-29 | 2018-01-05 | 中兴通讯股份有限公司 | A kind of message processing method, device and base station |
| CN108881810A (en) * | 2017-05-09 | 2018-11-23 | 杭州登虹科技有限公司 | The method of transmitting audio-video stream |
| CN107911477B (en) * | 2017-12-06 | 2021-01-19 | 深圳市智物联网络有限公司 | Data communication method, device and system |
| CN111294382A (en) * | 2019-12-30 | 2020-06-16 | 欧普照明股份有限公司 | Real-time data pushing method and device |
| CN112437271B (en) * | 2020-11-13 | 2021-12-03 | 珠海大横琴科技发展有限公司 | Monitoring video processing method and device, electronic equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1913461A (en) * | 2006-08-30 | 2007-02-14 | 北京天地互连信息技术有限公司 | Remote vedio monitoring system based on next generation interconnection network and its implementing method |
| CN102347895A (en) * | 2011-06-21 | 2012-02-08 | 杭州华三通信技术有限公司 | Method and equipment for transmitting monitoring data |
| CN103414883A (en) * | 2013-08-20 | 2013-11-27 | 浙江宇视科技有限公司 | Customized service method and customized playback device of video streams |
| CN103634610A (en) * | 2012-08-24 | 2014-03-12 | 中兴通讯股份有限公司 | Live content distribution system and method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8762984B2 (en) * | 2007-05-31 | 2014-06-24 | Microsoft Corporation | Content distribution infrastructure |
-
2014
- 2014-12-17 CN CN201410788861.0A patent/CN104469315B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1913461A (en) * | 2006-08-30 | 2007-02-14 | 北京天地互连信息技术有限公司 | Remote vedio monitoring system based on next generation interconnection network and its implementing method |
| CN102347895A (en) * | 2011-06-21 | 2012-02-08 | 杭州华三通信技术有限公司 | Method and equipment for transmitting monitoring data |
| CN103634610A (en) * | 2012-08-24 | 2014-03-12 | 中兴通讯股份有限公司 | Live content distribution system and method |
| CN103414883A (en) * | 2013-08-20 | 2013-11-27 | 浙江宇视科技有限公司 | Customized service method and customized playback device of video streams |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104469315A (en) | 2015-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104469315B (en) | Transmission of streams of video data method, apparatus based on CDN and system | |
| US10142386B2 (en) | Determining manifest file data used in adaptive streaming video delivery | |
| US20170310635A1 (en) | Address Resolution | |
| US8427943B2 (en) | Bandwidth-aware multicast load balancing on a multi-interface host | |
| US10404488B2 (en) | Network service header (NSH) metadata-based end-to-end multimedia session identification and multimedia service optimization | |
| CN105227341A (en) | For the system and method by content center network management devices | |
| WO2017054576A1 (en) | Unicast tunnel building method, apparatus and system | |
| CN106101617B (en) | Message transmission method, device and system | |
| CN102088460B (en) | Method, device and system for transmitting streaming media data in restricted networks | |
| CN105656680A (en) | Method and device for controlling web camera | |
| CN103944867A (en) | Dynamic host configuration protocol (DHCP) message processing method, device and system | |
| CN104753704A (en) | State migration method in SDN (software defined network) and switch | |
| CN101808107B (en) | Storage device and user communication method, device and system | |
| CN103929438A (en) | Firewall traversal method, equipment and system based on web page browser communication | |
| US9712592B2 (en) | Classification of HTTP multimedia traffic per session | |
| CN102984175B (en) | A kind of without IP monitoring frontend and a kind of agent apparatus | |
| CN106453690A (en) | IP address allocation method and apparatus | |
| CN108965428A (en) | The transmission method of live data, device, electronic equipment, system | |
| CN106230667B (en) | VTEP keep-alive detection method and device | |
| CN105812277A (en) | Access request control method, access request control system and communication equipment | |
| CN102469017A (en) | Relay selection method and relay control system | |
| CN103780494A (en) | User information obtaining method and device | |
| CN103079229A (en) | Directional broadcast transmission method for access controller | |
| CN102594882A (en) | Neighbor discovery proxy method and system based on Dynamic Host Configuration Protocol for Internet Protocol Version 6 (DHCPv6) monitoring | |
| CN102970236B (en) | A kind of multicast distribution tree switching method and apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |