CN103595957B - A kind of method and apparatus for adjusting monitor terminal work pattern of network interface - Google Patents
A kind of method and apparatus for adjusting monitor terminal work pattern of network interface Download PDFInfo
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- CN103595957B CN103595957B CN201310541216.4A CN201310541216A CN103595957B CN 103595957 B CN103595957 B CN 103595957B CN 201310541216 A CN201310541216 A CN 201310541216A CN 103595957 B CN103595957 B CN 103595957B
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Abstract
The present invention provides a kind of method for adjusting monitor terminal work pattern of network interface, and the monitor terminal is used for encoding video pictures, and this method includes：A, the dual-mode of itself is arranged to auto-negotiation after monitor terminal electrifying startup, network interface speed is arranged to auto-negotiation；B, the speed of the speed adjust of the video data monitor terminal network interface is sent according to the monitor terminal network interface.The present invention program is simple and easy, and cost is low, can solve the problems, such as it is numerous in the case of the Network Packet Loss caused by bursts of traffic.
Description
Technical field
The present invention relates to technical field of video monitoring, more particularly to a kind of monitor terminal work pattern of network interface that adjusts
Method and apparatus.
Background technology
In the transmission network of IP video monitorings, there is larger difference to the transmission requirement and traditional requirement of the network equipment,
It is primarily due to the characteristics of its IP video monitoring data carried is surrounded by itself.It is well known that IP video data bags are divided into I
Frame, P frames, also include B frames sometimes.For the network equipment for undertaking video data transmission, the maximum situation of flow load is just
It is the I frame data of multi-path video stream while pours in.Now, being superimposed with for a few road I frame data moment may exceed the net
Network equipment exit port speed, will so cause the loss of video data bag, and the real experiences to user are exactly that image interim card does not flow
Freely.It please join Fig. 1, the I frame data that two video encoders are sent reach access-layer switch simultaneously, if the two paths of data needs
The transmission rate wanted exceedes the speed of the access-layer switch exit port, then access-layer switch will lose some packets.
In view of the above-mentioned problems, current several solutions are as follows：
Solution one：Stream control function is enabled on the port of access switch connection monitor terminal, works as switch congestion
When can notify in time monitor terminal reduce packet sending speed.
Solution two：Caching is increased on access switch, IP video messages are cached in switch congestion
Rather than rough discarding.
Solution three：I frames and P frames that optimization monitor terminal is sent etc., make I frames diminish.
Solution one needs to configure good stream control function on access switch port in advance, and the stream control function can only
Enabled on the access interface of access switch.But in some practical application scenes, access switch or monitor terminal can
Fluidics can not be supported, can not thus use the program.
The method for increasing caching used by solution two on switches technically considers it is a good selection,
But this will increase the cost of video surveillance network again.The interchanger for being typically in core layer just has big caching, and is in and connects
It is all smaller to enter the interchanger general cache of layer, even without.
The I frames and P frames that optimization monitor terminal is sent used by solution three, it appears that be individual do not spend effortlessly
Good method.But actually the method is least desirable.Because the program has impact to picture quality, video fluency, one
As do not consider.
The content of the invention
In view of this, the present invention provides a kind of method for adjusting monitor terminal work pattern of network interface, the monitor terminal
For encoding video pictures, this method includes：A, the dual-mode of itself is arranged to auto-negotiation after monitor terminal electrifying startup,
Network interface speed is arranged to auto-negotiation；B, the speed adjust that video data is sent according to the monitor terminal network interface should
The speed of monitor terminal network interface.
Preferably, according to the speed adjust of monitor terminal network interface transmission video data, the monitor terminal network connects
Mouthful speed be specially：If the speed for sending video data is less than or equal to predetermined threshold value, by the monitor terminal network interface
Speed adjust be 10M, if it is described send video data speed be more than the predetermined threshold value, the monitor terminal network is connect
The speed adjust of mouth is 100M.
Preferably, the dual-mode of monitor terminal is adjusted to certainly by the transport layer protocol of the video data sent according to carrying
Negotiation or half-duplex.
Preferably, the monitoring server of management and monitoring terminal notifies monitor terminal according to the video data transmission rate known
Adjust network interface operating rate；Or the video data transmission rate that monitor terminal is directly known according to itself adjusts its network
Interface rate.
Preferably, the monitoring server of management and monitoring terminal notifies according to the transport layer protocol for the carrying video data known
Monitor terminal adjusts dual-mode；Or the transport layer protocol for carrying video data that monitor terminal is directly known according to itself is adjusted
Whole dual-mode.
Based on same design, the present invention also provides a kind of device for adjusting monitor terminal work pattern of network interface, should
Device is applied to monitor terminal, and the monitor terminal is used to encode the video image of collection, and the device includes：Mode of operation
Initialization unit, for the dual-mode of itself to be arranged into auto-negotiation, network interface speed quilt after monitor terminal electrifying startup
It is arranged to auto-negotiation；Rate adjustment unit, for sending the speed adjust of video data according to the monitor terminal network interface
The speed of the monitor terminal network interface.
Preferably, the rate adjustment unit should according to the speed adjust of monitor terminal network interface transmission video data
The speed of monitor terminal network interface is specially：If the speed for sending video data is less than or equal to predetermined threshold value, this is supervised
The speed adjust of control terminal network interface is 10M, should if the speed for sending video data is more than the predetermined threshold value
The speed adjust of monitor terminal network interface is 100M.
Preferably, the device also includes dual-mode adjustment unit, and the dual-mode adjustment unit is used to be sent out according to carrying
The dual-mode of monitor terminal is adjusted to auto-negotiation or half-duplex by the transport layer protocol of the video data sent.
Preferably, the monitoring server of management and monitoring terminal notifies monitor terminal according to the video data transmission rate known
Network interface operating rate is adjusted, rate adjustment unit notifies to perform the adjustment of speed according to the adjustment；Or speed adjust list
The video data transmission rate that member is directly known according to monitor terminal itself adjusts its network interface speed.
Preferably, the monitoring server of management and monitoring terminal notifies according to the transport layer protocol for the carrying video data known
Monitor terminal adjusts dual-mode, and dual-mode adjustment unit notifies to perform the adjustment of dual-mode according to the adjustment；It is or double
The transport layer protocol for the carrying video data that work mode adjustment unit is directly known according to monitor terminal itself adjusts dual-mode.
Compared to prior art, the present invention program is simple and easy, and cost is low, can solve it is numerous in the case of because bursts of traffic is led
The Network Packet Loss problem of cause.
Brief description of the drawings
Fig. 1 is video flow burst exemplary plot.
Fig. 2 is network structure corresponding to example of the present invention.
Fig. 3 is apparatus of the present invention building-block of logic.
Embodiment
The mode of operation of network interface include speed and duplex two aspect, can be divided into 10M half-duplexs, 10M full duplexs,
5 kinds of 100M half-duplexs, 100M full duplexs and auto-negotiation.All it is generally that mode of operation is arranged under auto negotiation mode.
The present invention program to the adaptive of monitor terminal work pattern of network interface by being adjusted so that access switch
Outgoing interface the situation of congestion no longer occurs, so as to no longer packet loss.The program is simple and easy, is to solve to regard in some actual scenes
The Perfected process of frequency packet loss problem.
The monitor terminal of industry has two kinds of management modes, i.e. independent operation mode and server centralized management pattern at present.
Illustrated individually below to how to implement this programme under both of which.
Embodiment one
Server centered management mode
The dual-mode of itself is arranged to auto-negotiation after monitor terminal electrifying startup, network interface speed is arranged to certainly
Consult.Subsequently it is adjusted according to actual conditions.
Monitoring server obtains the relevant information of monitor terminal, and the information mainly includes sending the speed of video data and held
Carry the protocol type of video data.The backward monitoring server of electricity is registered on monitor terminal, and monitoring can be informed in registration process
The code stream quantity and the speed of every code stream that server itself is supported（Mean Speed in seconds）And carrying is per bar code
The agreement of stream.These information are stored in local by monitoring server.Subsequent client is to monitoring server program request monitor terminal
All the way during live stream, monitoring server knows the speed and carrying that the road live stream can reach according to the information locally preserved
The agreement of the live stream.Generally, live stream is all carried by udp protocol.Monitoring server is according to follow-up monitor terminal
The speed of the live stream of transmission and bearing protocol are judged whether to need the mode of operation for adjusting monitor terminal network interface, such as
Fruit needs just to send adjust instruction, and notice monitor terminal adjusts the mode of operation of its network interface.Interface speed in mode of operation
Rate adjustment basis for estimation be：If the speed that monitor terminal sends video data is less than or equal to predetermined threshold value, this is monitored
The speed of Terminal Network Interface is arranged to 10M, if the speed for sending video data is more than the predetermined threshold value, this is supervised
The speed of control terminal network interface is arranged to 100M.Here the speed that monitor terminal sends video data is monitoring server sheet
The speed corresponding to the road live stream that ground preserves.Predetermined threshold value can be the value that 8M or 9M etc. is less than 10M, and the present invention is to this
It is not construed as limiting.In mode of operation duplex adjustment basis for estimation be：If udp protocol carries video data, then by duplex
Pattern is arranged to half-duplex, if Transmission Control Protocol carrying video data, then dual-mode is arranged to auto-negotiation.Need
It is bright, if setting auto-negotiation also possible the dual-mode of monitor terminal all the time, i.e., not to the duplex after initialization
Pattern is adjusted, because auto-negotiation is not only suitable for TCP situation, is also applied for UDP situation.Monitor terminal receives monitoring clothes
It is engaged in performing corresponding adjustment after the mode of operation adjustment instruction of device.
The live code that same monitor terminal is not gone the same way to monitoring server program request simultaneously if several clients
During stream, monitoring server it is determined that the monitor terminal video data transmission rate when need live code stream that these are not gone the same way
Speed is added.Such as the program request of client 1 live stream of the passage 1 of monitor terminal 1, while the program request of client 2 monitor terminal 1 is logical
The live stream in road 2.After monitoring server receives the program request signaling of client 1 and client 2, by inquiring about the two local passages
The stream rate supported, such as the two passages support that stream rate is 2M, then monitoring server confirms monitoring end
It is 4M to terminate and send the interface rate of video data.The transmission rate and predetermined threshold value that monitoring server will confirm that are compared
Relatively decide whether to notify monitor terminal to be operated the adjustment of pattern.If the speed of current monitor Terminal Network Interface is certainly
Consult obtained 100M, predetermined threshold value is assumed to be 8M, then monitoring server notifies monitor terminal by the rate enforcement of network interface
It is adjusted to 10M.
Monitoring server determines that monitor terminal network interface sends the speed of video flowing according to the current intelligence of live program request,
The speed and predetermined threshold value are compared so as to dynamically judge whether to adjust the speed of monitor terminal network interface.
The access switch being connected with monitor terminal, the duplex and speed of its port are all auto-negotiations, so monitoring is eventually
The above-mentioned adjustment mode at end can't carry out other influences to the transmission belt of video flowing.
Embodiment two
The monitor terminal of independent operation mode
The not monitored server controls of the monitor terminal of independent operation mode, so autonomous independent of monitoring server
It is operated the setting of pattern.Data stream size and data message the carrying association that monitor terminal current network interface is externally sent
View is the information such as TCP or UDP, and video frequency terminal apparatus is known itself.These information that monitor terminal is known according to itself
To adjust the mode of operation of own network interface.
The dual-mode of itself is arranged to auto-negotiation after monitor terminal electrifying startup, network interface speed is arranged to certainly
Consult.Subsequently it is adjusted according to actual conditions.
If the speed that monitor terminal sends video data is less than or equal to predetermined threshold value, by the monitor terminal network interface
Speed be arranged to 10M, if it is described send video data speed be more than the predetermined threshold value, the monitor terminal network is connect
The speed of mouth is arranged to 100M.
As for dual-mode auto negotiation mode during initialization can be kept constant, or can be according to carrying monitor terminal
The dual-mode of monitor terminal is arranged to auto-negotiation or half-duplex by the transport layer protocol of the video data of transmission.If
Udp protocol carries video data, then dual-mode is arranged into half-duplex, if Transmission Control Protocol carrying video data, then will
Dual-mode is arranged to auto-negotiation.
Illustrate beneficial effects of the present invention below by way of an example.With reference to figure 2,8 ports 100,000,000 without management
General switch, wherein 7 ports are descending to be all connected with web camera, in addition 1 port it is up connect other interchangers or
Router.If the video image of this 7 web cameras of client program request simultaneously, it is from 7 hundred that will have video data
Million ports are come in, and are gone out from 100,000,000 ports, even if being 2Mbps per the video data stream of road video camera, but in client
On from the point of view of, real time video image still has interim card risk.Main cause is：The I frame data of 7 road network video cameras are in certain a period of time
Quarter pours in simultaneously, although being 2Mbps per the speed of road network video camera（The speed is Mean Speed）, but a certain small
Section timestamp（In several milliseconds of time）The code stream of burst can reach more than 20 million, and the such burst video code flow in 7 tunnels is a certain
Moment is superimposed to together, will exceed access switch outgoing interface 100M speed, so as to cause packet loss.Using the present invention program
Afterwards, it is whole by server centered management mode or monitoring because the stream rate that every road network video camera is sent out is 2Mbps
The adjustment to speed under independent operation mode is held, allows the network interface speed of each web camera to be operated in 10Mbps, this
Even if sample one to exist code stream burst, interface rate 10Mbps is not more than.Old friend, which changes planes, is connecting 7 road network video cameras
In the case of, whenever exit port is all without the speed more than 100,000,000.
Although the present invention program is fairly simple, conventional thought is broken through, industry Normal practice is that terminal device access is handed over
Change planes and do not consider actual bearer data traffic size and type of service when consulting, always negotiate the ability all supported at both ends most
Big collection, i.e., when 100,000,000 ports of monitor terminal are connected with 100,000,000 ports of interchanger, always make monitor terminal and interchanger
The network port be all operated in the case of 100,000,000.The data traffic that the present invention program is then carried according to real network interface is big
It is small, and type of service, cleverly reduce network interface speed and mode of operation, it then follows purchase project, utilize network interface speed
Rate and mode of operation control the burst flow with video message burst character, reaching the mesh for improving terminal device access density
, this programme succinctly efficiently facilitates.
Based on same design, present invention also offers a kind of device for adjusting monitor terminal work pattern of network interface,
It please join Fig. 3.The device is applied to monitor terminal, and the monitor terminal is used to encode the video image of collection, the device bag
Include：Mode of operation initialization unit 31.The dual-mode of itself is arranged to by the unit 31 after being used for monitor terminal electrifying startup
Auto-negotiation, network interface speed are arranged to auto-negotiation；Rate adjustment unit 32, the unit 32 are used for according to the monitor terminal
Network interface sends the speed of the speed adjust of the video data monitor terminal network interface；Dual-mode adjustment unit 33, should
The transport layer protocol for the video data that dual-mode adjustment unit 33 is used to be sent according to carrying is by the dual-mode of monitor terminal
It is adjusted to auto-negotiation or half-duplex.Certain dual-mode adjustment unit 33 it is not necessary to module, as previously mentioned, duplex
Auto negotiation mode when pattern is always maintained at initializing is also to have no problem.
The rate adjustment unit 32 is according to the monitoring of the speed adjust of monitor terminal network interface transmission video data
The speed of Terminal Network Interface is specially：It is if the speed for sending video data is less than or equal to predetermined threshold value, the monitoring is whole
The speed adjust for holding network interface is 10M, if the speed for sending video data is more than the predetermined threshold value, this is monitored
The speed adjust of Terminal Network Interface is 100M.
The speed adjust that rate adjustment unit 32 can be sent according to monitoring server is notified to perform the adjustment of speed；Or
The video data transmission rate that person directly can also be known according to monitor terminal itself adjusts its network interface speed.
Similarly, the dual-mode adjustment that dual-mode adjustment unit 33 can be sent according to monitoring server is notified to hold
The adjustment of row dual-mode；Or the transport layer protocol adjustment for the carrying video data that can also be known according to monitor terminal itself
Dual-mode.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
God any modification, equivalent substitution and improvements done etc., should be included within the scope of protection of the invention with principle.
Claims (8)
1. a kind of method for adjusting monitor terminal work pattern of network interface, the monitor terminal are used for encoding video pictures, wherein,
The monitor terminal is connected with access-layer switch；The access-layer switch is descending to be connected with more monitor terminals；Its feature
It is, this method includes：
A, the dual-mode of itself is arranged to auto-negotiation after monitor terminal electrifying startup, network interface speed is arranged to self tuning
Business；The dual-mode of monitor terminal is adjusted to auto-negotiation or half pair by the transport layer protocol of the video data sent according to carrying
Work；
B, during the video image for the more monitor terminals being connected when client program request simultaneously with the access-layer switch, root
The speed of the speed adjust of the video data monitor terminal network interface is sent according to the monitor terminal network interface known in advance
Rate, to ensure that the speed of burst video code flow that the access-layer switch receives is no more than going out for the access-layer switch
The speed of interface.
2. the method as described in claim 1, it is characterised in that video data is sent according to the monitor terminal network interface
The speed of the speed adjust monitor terminal network interface is specially：If the speed for sending video data is less than or equal to default threshold
Value, then be 10M by the speed adjust of the monitor terminal network interface, if the speed for sending video data is default more than this
Threshold value, then it is 100M by the speed adjust of the monitor terminal network interface.
3. method as claimed in claim 2, it is characterised in that the monitoring server of management and monitoring terminal is according to the video known
Data transmission rate notice monitor terminal adjustment network interface operating rate；Or regarding of directly being known according to itself of monitor terminal
Frequency data transmission rate adjusts its network interface speed.
4. the method as described in claim 1, it is characterised in that the monitoring server of management and monitoring terminal is according to the carrying known
The transport layer protocol notice monitor terminal adjustment dual-mode of video data；Or holding of directly being known according to itself of monitor terminal
Carry the transport layer protocol adjustment dual-mode of video data.
5. a kind of device for adjusting monitor terminal work pattern of network interface, the device are applied to monitor terminal, the monitor terminal
For being encoded to the video image of collection, wherein, the monitor terminal is connected with access-layer switch；The Access Layer is handed over
Change planes and descending be connected with more monitor terminals；Characterized in that, the device includes：
Mode of operation initialization unit, for the dual-mode of itself to be arranged into auto-negotiation, net after monitor terminal electrifying startup
Network interface rate is arranged to auto-negotiation；
Dual-mode adjustment unit, for the transport layer protocol of video data that is sent according to carrying by the duplexing mould of monitor terminal
Formula is adjusted to auto-negotiation or half-duplex；
Rate adjustment unit, for the more monitor terminals being connected when client program request simultaneously with the access-layer switch
Video image when, it is whole that the speed adjust of the video data monitoring is sent according to the monitor terminal network interface known in advance
The speed of network interface is held, to ensure that the speed of burst video code flow that the access-layer switch receives connects described in being no more than
Enter the speed of the outgoing interface of layer switch.
6. device as claimed in claim 5, it is characterised in that the rate adjustment unit is according to the monitor terminal network interface
The speed for sending the speed adjust monitor terminal network interface of video data is specially：If the speed for sending video data is small
Then it is 10M by the speed adjust of the monitor terminal network interface, if the speed for sending video data in equal to predetermined threshold value
Rate is more than the predetermined threshold value, then is 100M by the speed adjust of the monitor terminal network interface.
7. device as claimed in claim 6, it is characterised in that the monitoring server of management and monitoring terminal is according to the video known
Data transmission rate notice monitor terminal adjustment network interface operating rate, rate adjustment unit perform speed according to adjustment notice
The adjustment of rate；Or the video data transmission rate that rate adjustment unit is directly known according to monitor terminal itself adjusts its network
Interface rate.
8. device as claimed in claim 5, it is characterised in that the monitoring server of management and monitoring terminal is according to the carrying known
The transport layer protocol notice monitor terminal adjustment dual-mode of video data, dual-mode adjustment unit are held according to adjustment notice
The adjustment of row dual-mode；Or the carrying video data that dual-mode adjustment unit is directly known according to monitor terminal itself
Transport layer protocol adjusts dual-mode.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104954282A (en) * | 2015-05-08 | 2015-09-30 | 南车株洲电力机车研究所有限公司 | Enhanced port adaptive method and system |
| CN106712899B (en) * | 2016-11-25 | 2020-10-16 | 浙江宇视科技有限公司 | Port rate adjusting method and device |
| CN106533802B (en) * | 2016-12-20 | 2019-08-02 | 浙江宇视科技有限公司 | Network mode of operation switching method and device |
| DE102018208515A1 (en) * | 2018-05-29 | 2019-12-05 | Siemens Aktiengesellschaft | Method for setting up imaging sensors, computer program product for setting up imaging sensors, sensor device system and installation |
| CN109769324B (en) * | 2019-03-28 | 2020-12-11 | 深圳爱克莱特科技股份有限公司 | LED lamp remote control device, LED lamp control card and LED lamp control method |
| CN111404845A (en) * | 2020-03-12 | 2020-07-10 | 深圳市吉祥腾达科技有限公司 | Method and device for testing network port rate negotiation function |
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