CN109617810A - Data transmission method and device - Google Patents
Data transmission method and device Download PDFInfo
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- CN109617810A CN109617810A CN201811459203.1A CN201811459203A CN109617810A CN 109617810 A CN109617810 A CN 109617810A CN 201811459203 A CN201811459203 A CN 201811459203A CN 109617810 A CN109617810 A CN 109617810A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L45/00—Routing or path finding of packets in data switching networks
- H04L45/302—Route determination based on requested QoS
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/10—Flow control; Congestion control
- H04L47/24—Traffic characterised by specific attributes, e.g. priority or QoS
- H04L47/2416—Real-time traffic
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L47/00—Traffic control in data switching networks
- H04L47/50—Queue scheduling
- H04L47/62—Queue scheduling characterised by scheduling criteria
- H04L47/625—Queue scheduling characterised by scheduling criteria for service slots or service orders
- H04L47/6275—Queue scheduling characterised by scheduling criteria for service slots or service orders based on priority
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
This application provides a kind of data transmission method and devices, are related to the communications field, for improving service transmission quality, promote efficient network resource usage.This method comprises: SDN controller obtains the first data traffic information between the first transmission node and the second transmission node；If the first data traffic information meets the first preset condition, SDN controller determines the bandwidth demand of transmission path according to the first data traffic information；Transmission path is used for transmission target data, and the corresponding source access node of target data is the first transmission node, and the corresponding purpose access node of target data is the second transmission node；SDN controller establishes transmission path between the first transmission node and the second transmission node according to the bandwidth demand of transmission path.The business transmitting method of the application is based on transmission path and carries out bandwidth resource allocation, can be improved service transmission quality, promotes efficient network resource usage.
Description
Technical field
This application involves field of communication technology more particularly to a kind of data transmission methods and device.
Background technique
With commonly used, the global internet traffic presentation explosion type of the new technologies such as cloud computing, Internet of Things and 5G
The trend of growth, internet scale are also constantly expanding.According to the prediction data of Cisco's global cloud index, global interconnection in 2021
Net total flow will be added to 3.064ZB, will be 2016 total flow 3.07 times of (0.998ZB), compound growth rate 25.2%.
While network flow rapid growth, various new business and new opplication are also continued to bring out, and are applied compared to tradition, this
The requirement of a little business and application to network performance can be higher.For example, the business pair such as industrial automation, unmanned and portable medical
Delay requirement is down to 1ms, high reliablity to 99.999%；The business such as 3D/ ultra high-definition video, game on line and VR/AR can disappear
A large amount of network bandwidth is consumed, and has different degrees of requirement to time delay and shake.
Current operator network generallys use the mode of " DiffServ+ underloading " to realize the service quality to key business
It ensures (Quality of Service, QoS)." underloading " refers to that network average load is low, i.e., exchanges network at original with bandwidth
Service quality.For disadvantage it is obvious that will lead to network utilization low, cost is high.With the well of coming years network flow
Spray formula increases, and network construction cost will also increase in proportion, or even can be higher.High investment, poor efficiency will make operator face
Face awkward situation unable to make ends meet.In addition, " DiffServ+ underloading " can not also avoid local congestion's problem completely, therefore can not mention
It is ensured for absolute QoS.
In order to solve the problems, such as the local congestion occurred by load imbalance, people are by traffic engineering (traffic
Engine it) is introduced into the network optimization, core is the congestion points avoided in network by flow scheduling, to promote network
Transmission quality.Current main-stream is MPLS TE.But since MPLS TE configures complexity, and there are scalability problems, therefore
It is difficult to be widely used in existing net.
In recent years, network is promoted using software defined network (software defined network, SDN) technology
QoS becomes a kind of new trend.In current scheme, the Route Selection of each Business Stream is completed by SDN controller,
When network size and all very huge network flow, this will bring very big processing pressure to SDN controller；In addition,
SDN controller passes through fixed-period crawling network state information as the foundation of flow scheduling, but when network flow constantly changes,
It is difficult to ensure that collecting the accuracy of information, the effect of flow scheduling will affect in this way.
The trend of centralization distribution is presented in current internet flow, and more and more flows focus on a small number of internet platforms
On.In the U.S., Google controls 90% search advertisements, Facebook possesses 80% social flow, Amazon occupies electronics
The 74% of book market market share；In China, such as Tencent, Baidu, Alibaba internet giant are also respectively in occupation of social, search
With most of share of e-commerce field, and live streaming field has then been monopolized on footpath between fields footpath between fields, a small number of flow platforms of bucket fish etc..Meanwhile more
More business clouds and CDN technology it is commonly used also in the process for objectively having pushed network flow centralization.
In addition, comparing single Business Stream, the network flow being formed by stacking by numerous Business Streams can be more on Annual distribution
Stablize, be also easier to predict and plan.But when various flow flows to identical position in the presence of all, the data transmission quality of network will
It is affected.
Summary of the invention
In order to solve the above technical problems, can be controlled by SDN this application provides a kind of data transmission method and device
Device establishes transmission path according to the intensity of data traffic in network between transmission node.Pass through the rule to transmission path
It draws, can be improved service transmission quality, promote efficient network resource usage.
In order to achieve the above objectives, the application adopts the following technical scheme that
In a first aspect, this application provides a kind of data transmission method, this method comprises: the SDN controller obtains the
The first data traffic information between one transmission node and the second transmission node；If first data traffic information meets first
Preset condition, then the SDN controller determines the bandwidth demand of transmission path according to first data traffic information；The biography
Defeated path is used for transmission target data, and the corresponding source access node of the target data is first transmission node, the mesh
Marking the corresponding purpose access node of data is second transmission node；The SDN controller is according to the band of the transmission path
Wide demand establishes the transmission path between first transmission node and the second transmission node.
Second aspect, this application provides another data transmission method, this method comprises: the first transmission node determine to
Transmit the data type of data；Wherein, the data type includes target data and non-targeted data；First transmission node
For the source access node of the data to be transmitted；If the data type of the data to be transmitted is target data, by built
Data to be transmitted described in vertical transmission path；If the data type of the data to be transmitted is non-targeted data, pass through
The SDN controller is data to be transmitted described in the path transmission of data to be transmitted calculating；First transmission node is true
The QoS demand of the fixed data to be transmitted；First transmission node is used for according to the data type and QoS demand determination
Transmit the priority of the transmission queue of the data to be transmitted；First transmission node is according to the priority for transmitting queue
Forward the data to be transmitted.
The third aspect, this application provides a kind of data transmission device, which includes: processing module, for obtaining the
The first data traffic information between one transmission node and the second transmission node；The processing module, if being also used to described first
Data traffic information meets the first preset condition, then the bandwidth need of transmission path are determined according to first data traffic information
It asks；The transmission path is used for transmission target data, and the corresponding source access node of the target data is the first transmission section
Point, the corresponding purpose access node of the target data are second transmission node；The processing module is also used to according to institute
The bandwidth demand for stating transmission path establishes the transmission path between first transmission node and the second transmission node.
Fourth aspect, this application provides another data transmission devices, which includes: processing module, for determining
The data type of data to be transmitted；Wherein, the data type includes target data and non-targeted data；The processing module,
If the data type for being also used to the data to be transmitted is target data, by be passed described in established transmission path
Transmission of data；The processing module, if the data type for being also used to the data to be transmitted is non-targeted data, by described
SDN controller is data to be transmitted described in the path transmission of data to be transmitted calculating；The processing module is also used to determine
The QoS demand of the data to be transmitted；The processing module is also used to be determined according to the data type and QoS demand and use
In the priority for the transmission queue for transmitting the data to be transmitted；The processing module is also used to according to the transmission queue
Priority forwards the data to be transmitted.
5th aspect, this application provides another data transmission device, the device include: processor, communication interface and
Memory；Wherein, for memory for storing one or more programs, which includes computer executed instructions,
When data transmission device operation, processor executes the computer executed instructions of memory storage, so that the data pass
Defeated device executes data transmission method described in above-mentioned first aspect, second aspect and its any one implementation.
6th aspect, this application provides a kind of computer readable storage medium, stores in computer readable storage medium
There is instruction, when computer executes the instruction, which executes above-mentioned first aspect, second aspect and its any one realization
Data transmission method described in mode.
7th aspect, this application provides a kind of computer program products comprising instruction, when the computer program produces
When product are run on computers, so that the computer executes above-mentioned first aspect, second aspect and its any one realization side
Data transmission method described in formula.
Data transmission method provided by the present application, apparatus and system, the SDN controller obtain the first transmission node and the
The first data traffic information between two transmission nodes；If first data traffic information meets the first preset condition, institute
State the bandwidth demand that SDN controller determines transmission path according to first data traffic information；The transmission path is for passing
Defeated target data, the corresponding source access node of the target data is first transmission node, and the target data is corresponding
Purpose access node is second transmission node；The SDN controller is according to the bandwidth demand of the transmission path described
The transmission path is established between first transmission node and the second transmission node.The application is by SDN controller according in network
Each transmission node between flow establish transmission path.Target data is by the transmission path, to improve business
Transmission quality promotes efficient network resource usage.
Detailed description of the invention
Fig. 1 is a kind of service transmission system schematic diagram of the method application of business transmission provided by the embodiments of the present application；
Fig. 2 is a kind of flow chart of the method for business transmission provided by the embodiments of the present application；
Fig. 3 is the flow chart of the method for another business transmission provided by the embodiments of the present application；
Fig. 4 is the flow chart of the method for another business transmission provided by the embodiments of the present application；
Fig. 5 is the flow chart of the method for another business transmission provided by the embodiments of the present application；
Fig. 6 is a kind of structural schematic diagram of the service transmission device applied to SDN controller provided by the embodiments of the present application；
Fig. 7 is the structural representation of another service transmission device for being applied to SDN controller provided by the embodiments of the present application
Figure；
Fig. 8 is a kind of structural schematic diagram of the service transmission device applied to transmission node provided by the embodiments of the present application；
Fig. 9 is the structural representation of another service transmission device for being applied to SDN controller provided by the embodiments of the present application
Figure；
Figure 10 is the structural representation of another service transmission device for being applied to transmission node provided by the embodiments of the present application
Figure.
Specific embodiment
Data transmission method provided by the present application, system and device are described in detail below in conjunction with attached drawing.
Term " first " and " second " in the description of the present application and attached drawing etc. be for distinguishing different objects, and
It is not intended to the particular order of description object.
In addition, the term " includes " being previously mentioned in the description of the present application and " having " and their any deformation, it is intended that
It is to cover and non-exclusive includes.Such as the process, method, system, product or equipment for containing a series of steps or units do not have
It is defined in listed step or unit, but optionally further comprising the step of other are not listed or unit, or optionally
It further include other step or units intrinsic for these process, methods, product or equipment.
It should be noted that in the embodiment of the present application, " illustrative " or " such as " etc. words make example, example for indicating
Card or explanation.Be described as in the embodiment of the present application " illustrative " or " such as " any embodiment or design scheme do not answer
It is interpreted than other embodiments or design scheme more preferably or more advantage.Specifically, " illustrative " or " example are used
Such as " word is intended to that related notion is presented in specific ways.
In the description of the present application, unless otherwise indicated, the meaning of " plurality " is refer to two or more.
Data transmission method provided by the embodiments of the present application can be applied in data transmission system 100 as shown in Figure 1,
The data transmission system 100 includes multiple user terminals 101, at least one internet platform 102 and SDN103.The SDN103
Including multiple transmission nodes 104 and SDN controller 105.
Wherein, internet platform 102 can be such as Baidu, Taobao, Tencent, youku.com, and user terminal 101 is searched for initiating
Rope, video, shopping, literature query etc. are requested access to internet platform 102.Internet platform 102 is according to user terminal 101
Web content needed for network request provides user terminal 101.
It realizes that network-based control plane is separated with Forwarding plane by SDN controller in the SDN103, is controlled using SDN
Device realization concentrates all flows in network, is flexibly controlled, by SDN controller 105 to all chains in network
The information such as bandwidth, time delay, the packet loss on road monitor in real time and are data traffic one optimal path of selection in network.
When user terminal 101 needs to send request data to internet platform 102, SDN controller 105 is according in network
Current information is that the request data calculates a paths, is transmitted by the path to the request data.
Specifically, sending data to transmission node 104, transmission node when user terminal 101 needs to carry out data transmission
104 identify the data, match the path that SDN controller calculates for it, successively will according to each transmission node 104 in the path
The data are transmitted in internet platform 102.
In this application, when SDN controller 105 is found in two (such as biographies of user terminal concentrated area of transmission node 104
Defeated node and the transmission node being connect with large-scale internet platform) between flow it is more when, SDN controller 105 is at this
A dedicated transmission path is established between two transmission nodes 104.So, subsequent with two transmission nodes 104 be source, mesh
The data of access node all pass through the path and transmitted.
There is also by the data of above-mentioned dedicated transmission path, which is not still it by SDN controller in SDN
It calculates path to be transmitted, SDN controller can be with shared node and chain with above-mentioned dedicated transmission path for its path calculated
Road resource.
The embodiment of the present application provides a kind of business transmitting method, is applied in service transmission system shown in FIG. 1.The side
Method can be executed by SDN controller.
As shown in Fig. 2, the method includes S201-S203:
S201, the SDN controller obtain the first data traffic letter between the first transmission node and the second transmission node
Breath.
Wherein, first transmission node and second transmission node are respectively any transmission node in the SDN.
First data traffic information is all in preset time between first transmission node and second transmission node
The flow information of data.
Optionally, this step may be implemented are as follows: all transmission node sending flow rates statistics of the SDN controller into network disappears
Breath, so that its data traffic information within a preset time is reported to SDN controller by each transmission node.SDN controller evidence
The first data traffic information between this first transmission node of statistics and the second transmission node.
If S202, first data traffic information meet the first preset condition, the SDN controller is according to described the
One data traffic information determines the bandwidth demand of transmission path.
Wherein, the transmission path is used for transmission target data, and the target data is with the first transmission node and second
Transmission node is the data of source access node and purpose access node.
Optionally, first preset condition can be greater than default threshold for the first data traffic information within a preset time
Value；First preset condition can also be the flow information of the target data in the first data traffic information within a preset time
Greater than preset threshold.
The step specifically may be implemented are as follows: after SDN controller obtains first data traffic information, judge this first
Believe in data traffic information using the first transmission node and the second transmission node as the flow of source, the target data of purpose access node
Breath.If the flow information of the target data is greater than preset threshold, judge between the first transmission node and the second transmission node
It needs to establish transmission path and carrys out transmission objectives data.SDN controller is according to the purpose number in the first data traffic information of acquisition
According to flow information determine bandwidth required for transmission path.
Illustratively, the first preset condition set in this step as target data flow be greater than 200MB/S when SDN control
Device processed establishes transmission path.In S201, SDN controller get in five minutes the first transmission node and the second transmission node it
Between the first data traffic information be 200G, wherein target data flow is 100G, i.e., the described target data flow is described the
Average transmission rate is 341MB/S between one transmission node and the second transmission node.It needs at this point, SDN controller determines the
Transmission path is established between one transmission node and the second transmission node.In order to establish transmission path, it is necessary first to determine transmission road
Bandwidth required for diameter.Here, the bandwidth of transmission path is determined using the flow of above-mentioned target data, for example, in above-mentioned statistics
It was found that target data average transmission 341MB/S per second between first transmission node and the second transmission node.In order to meet
The bandwidth of transmission path is set 500MB/S by the transmission of target data.
S203, the SDN controller are according to the bandwidth demand of the transmission path in first transmission node and second
The transmission path is established between transmission node.
Specifically, as shown in figure 3, step S203 can be divided into step S301-S303.
S301, SDN controller determine first path set.
It wherein, include at least one first path in the first path set；The first path is from described first
Transmission node is to the path of second transmission node.
Specifically, SDN controller obtains all nodal informations between first transmission node and the second transmission node
And link information.Then first path set is determined according to these nodal informations and link information.Wherein, in the nodal information
Including node identification, the Delay of on off operating mode, link in the link information including the link and bearing for link
Information carrying breath.SDN controller can also weed out the first path that link is in interrupt status from first path set.
S302, at least one first shortest path is determined from the first path set.
Wherein, first shortest path is the shortest path of path length in the first path set.The path
Length can be determined by the actual geographic length in path, can also be determined by the number of links in path, the application is to this
Without limitation.
Specifically, SDN controller determines the path length of all first paths；According to fixed all first paths
Path length determines the first shortest path of at least one of first path set.
S303, the path for meeting the bandwidth demand of the transmission path is selected from least one described first shortest path
As the transmission path.
Specifically, SDN controller is according to all between the first transmission node and the second transmission node obtained in S301
Link information determines that the current of each first shortest path can bandwidth allocation.Current if there is the first shortest path is distributed
Bandwidth can satisfy the bandwidth demand of transmission path, it is determined that establish transmission path on first shortest path.SDN controller
Each node into first shortest path issues configuration forwarding-table item, which can be according to the forwarding-table item
Forward target data.
It, can if there are a plurality of the current of first shortest path in the first path in a kind of implementation of this step
Bandwidth allocation can satisfy the bandwidth demand of transmission path, then the SDN controller can be from above-mentioned a plurality of first shortest path
Middle selection can maximum first shortest path of bandwidth allocation establish transmission path, establish other transmission paths in order to subsequent.This
Outside, can also select from above-mentioned a plurality of first shortest path can the smallest first shortest path of bandwidth allocation for the SDN controller
Diameter establishes transmission path, carries out dilatation to the transmission path in order to subsequent.
In a kind of implementation of this step, when the transmission path is not satisfied in all first shortest paths
When bandwidth demand, as shown in figure 4, following steps S401-S403 can also be performed in SDN controller:
S401, the SDN controller obtain i+1 road after deleting all i-th shortest paths in the i-th set of paths
Diameter set.
S402, at least one i+1 shortest path is determined again from the i+1 set of paths.
S403, the road for meeting the bandwidth demand of the transmission path is selected from i+1 shortest path described at least one
Diameter is as the transmission path.
If the bandwidth demand of the transmission path is not satisfied in all i+1 shortest paths, the value of i adds 1
And repeat above-mentioned steps S401 to S403；Wherein, the initial value of the i is 1.
The institute if N set of paths is not able to satisfy the QoS demand of business for the path in the empty or described N set of paths
It states transmission path and establishes failure.
It, will be described if the N shortest path determined from N set of paths meets the bandwidth demand of the transmission path
N shortest path is as the transmission path, wherein the value of the N is more than or equal to 2.
Data transmission method provided by the present application obtains the first transmission node and the second transmission node by SDN controller
Between the first data traffic information.If it is default that the data traffic between the first transmission node and the second transmission node meets first
Condition, it is determined that the bandwidth demand of transmission path, and establish transmission path target data.Without making SDN controller
Each target data calculates transmission path.The calculating pressure for saving SDN controller is reduced to SDN controller working performance
Influence.
In a kind of implementation of the application, when being discontented with for the N shortest path in the N routing information set
When the bandwidth demand of the foot transmission path；Present invention also provides a kind of calculation method of link dilatation index, the methods
Including calculation formula:
Wherein, link e be N shortest path in currently can bandwidth allocation be less than the transmission path bandwidth demand chain
Road,Indicate the transmission path when n-th path is established to the dilatation exponential increment of link e；γ is link dilatation
Index adjustment parameter；B is the bandwidth demand of the transmission path；BavailIt (e) can bandwidth allocation for the current of the link.
It, will be calculated according to above-mentioned formula in the transmission path establishment processIt is overlapped to obtain institute
Transmission path is stated to the dilatation exponential increment of link e.
By the network, currently all transmission paths add up the dilatation exponential increment of link e to obtain the link e
Dilatation index.Dilatation is carried out according to the link in network described in the link dilatation exponent pair.
In a kind of implementation of the application, one can be established between the first transmission node and the second transmission node
Uplink transmission path and a downlink transmission path.Wherein, uplink transmission path and downlink transmission path are passed through node and
Link can be different, and the bandwidth of both links can also be different.
Such as transmission path is established between user concentrated area and a video website.Because user to video website it
Between the data that send be generally resource request data, the data volume is usually smaller, and occupied bandwidth is also less.Therefore one is established for it
The lesser uplink transmission path of bandwidth, the uplink transmission path can establish can be on the less chain road of bandwidth allocation.And it regards
Frequency website sends video data to user according to the request of user, and the occupied bandwidth of the data is more, therefore can establish for it
One biggish downlink transmission path of bandwidth.The downlink transmission path needs to establish on the more chain road of available bandwidth.Pass through
Establish a uplink transmission path and a downlink transmission path respectively between the first transmission node and the second transmission node, it can
Preferably to utilize the link circuit resource in network, increase network utilization.
In a kind of implementation of the application, existed in the SDN controller according to the bandwidth demand of the transmission path
It is established after the transmission path between first transmission node and the second transmission node, present invention also provides one kind to pass through
Monitor the method that the data traffic between the first transmission node and the second transmission node is adjusted transmission path in real time.Specifically
Are as follows:
The SDN controller obtains the second data traffic between first transmission node and second transmission node
Information.
If second data traffic information meets the second preset condition, the SDN controller increases the transmission road
The bandwidth of diameter.It avoids when the data traffic between the first transmission node and the second transmission node increases, because of transmission path bandwidth
Deficiency influences user experience.
If second data traffic information meets third preset condition, the SDN controller reduces the transmission road
The bandwidth of diameter.If second data traffic information meets the 4th preset condition, the SDN controller deletes the transmission road
Diameter.Avoid when between the first transmission node and the second transmission node data traffic reduce when transmission path in a large amount of link bandwidths
It is idle, influence network performance.
In a kind of implementation of the application, the bandwidth of the transmission path is reduced in the SDN controller or in institute
It states after SDN controller deletes the transmission path.If existing between first transmission node and the second transmission node more
A transmission path, then can the SDN controller judgement establish the first transmission path；Wherein, first transmission path is used for
Transmit the data in the multiple transmission path.If can, SDN controller determines the bandwidth demand of first transmission path,
And first transmission path is established according to the bandwidth demand of the newly-built transmission path.The SDN controller is deleted described more
Transmission paths.The utilization of transmission path can be improved by the way that multiple transmission paths are merged into a transmission paths in this method
Rate.
In a kind of implementation of the application, failure is established in the transmission path or the SDN controller increases institute
After the bandwidth failure for stating transmission path.The target data is split into multiple secondary datas by the SDN controller.It is described
SDN controller determines the flow information of each secondary data；And it is determined according to the flow information of each secondary data
The bandwidth demand of each secondary data transmission path.The SDN controller is according to each secondary data transmission path
Bandwidth demand be that each secondary flow establishes transmission path between first transmission node and the second transmission node.
If described split occurs to establish completion secondary flow after the SDN controller increases the bandwidth failure of the transmission path
Original transmission path is deleted after the transmission path of amount.Wherein, the target data is split as to the side of multiple secondary datas
Method includes: split and according to the first data flow according to the type of service or priority level of data message in the first data traffic
The address of data message is split in amount.The implementation more flexible can establish transmission path, when can use in network
When bandwidth deficiency, by the way that target data is split as several secondary datas and establishes transmission path respectively, can successfully it complete
The foundation of transmission path.
In a kind of implementation of the application, above by real time monitoring the first transmission node and the second transmission node it
Between data traffic method that transmission path is adjusted can also be by the first transmission node or the second transmission node
One monitoring server is set to execute.The monitoring server can be one section of program or a functional module.In the monitoring
The trigger condition of the second preset condition, third preset condition and the 4th preset condition is preset in module, it is corresponding when reaching
To the corresponding preset condition trigger event of SDN controller report when condition, then by SDN controller transmission path is adjusted.
The interaction between SDN controller and node can be reduced by the monitoring server, mitigates the pressure of SDN controller.
In a kind of implementation of the application, a kind of network configuration interface is provided.It can manually be set for staff
Set up vertical transmission path the first transmission node and the second transmission node, the bandwidth of artificial setting transmission path, manually to described
The bandwidth of transmission path is adjusted.
The embodiment of the present application also provides another business transmitting method, is applied in service transmission system shown in FIG. 1.Institute
The method of stating can be executed by the first transmission node.
As shown in figure 5, the method includes S501-S503:
S501, the first transmission node determine the data type of data to be transmitted.
Wherein, the data type includes target data and non-targeted data；First transmission node is described to be passed
The source access node of transmission of data.The target data is using the first transmission node and the second transmission node as source access node and mesh
Access node data.The non-targeted data are the data in the data to be transmitted other than target data.
The forwarding-table item of identification target data has been pre-configured in first transmission node.When data to be transmitted reaches the
After one transmission node, the first transmission node judges whether it is target data according to the forwarding-table item.
If the data type of S502, the data to be transmitted is target data, pass through established transmission path
The data to be transmitted.
Specifically, the first transmission node according to matching in advance if the data type of the data to be transmitted is target data
Target data is sent to next transmission node by the forwarding-table item set, and next transmission node equally executes this step, until
The target data is forwarded to the purpose network (internet platform or purpose user) of target data by the second transmission node.
It is described by the SDN controller if the data type of S503, the data to be transmitted is non-targeted data
Data to be transmitted described in the path transmission that data to be transmitted calculates.
Specifically, the first transmission node is non-targeted by this if being non-targeted data if the data type of the data to be transmitted
Data are sent to SDN controller, and SDN controller calculates a paths according to the link information in preset algorithm and network for it.
The path does not configure forwarding-table item, and the non-targeted data are sent to the first transmission node, the first transmission by SDN controller later
Target data is sent to next transmission node according to the forwarding-table item for its configuration by node, and next transmission node is equally held
This step of row, until the target data be forwarded to by the second transmission node target data purpose network (internet platform or
Person's purpose user).
Illustratively, the preset algorithm can be dijkstra's algorithm, specifically, in all links in SDN
Each link e ' building weight w eight (e '), weight w eight (e ') are whether the link can be used as non-targeted data
The parameter of the composition link in path.
Specifically,
Wherein, M indicates the maximum bandwidth that all links are supported in SDN network；Load (e ') is in link e ' preset time
Average load；Bavail(e ') can bandwidth allocation for link e's '；Bmax(e ') is the maximum bandwidth of link e '；β is weight adjusting
Parameter, β value is between (0,1).By the adjusting to β, weight w eight (e ') the most suitable is selected, so that SDN is controlled
Device can avoid the link of target data concentration when non-targeted data select path and avoid the link of heavier loads.
S504, first transmission node according to the data type and service quality (quality of service,
QoS) demand determines the priority for being used for transmission the transmission queue of the data to be transmitted.
Wherein, the target data can be divided into according to the QoS demand: time-delayed sensitive data, bandwidth safeguard data and
General data.The non-targeted data can be divided into according to the QoS demand: time-delayed sensitive data and general data.Time delay is quick
Sense data are to require relatively high data to network time delay；Bandwidth safeguard data are of less demanding to time delay, but are needed
The data of certain bandwidth safeguard；General data is not do desired data to time delay and bandwidth.
First transmission node determines the corresponding transmission queue of data to be transmitted of different types of data, different QoS requirements
Priority.Wherein, the priority level of the corresponding transmission queue of time-delayed sensitive data in the target data is P1.It is described
There are two different priority levels P2, P3 for the corresponding transmission queue tool of bandwidth safeguard data in target data.It is described non-
The priority level of the corresponding transmission queue of time delay sensitive type data in target data is P4.The target data and non-mesh
The priority level for marking the corresponding transmission queue of general data in data is P5.The priority level is pressed from high to low
Sequence arranges are as follows: P1 > P2 > P4 > P3 > P5.
Priority level P2, P3 of the corresponding transmission queue of bandwidth safeguard data in above-mentioned target data is can be with
Itself queue length be adjusted.The method of adjustment specifically may be implemented are as follows: when the bandwidth in the target data is quick
The queue length for feeling the corresponding transmission queue of data is more than LmaxWhen, the bandwidth sensitive data in the target data are corresponding
The priority level of transmission queue is adjusted to P2.
When the queue length of the corresponding transmission queue of the bandwidth sensitive data in the target data is less than LminWhen, by institute
The priority level for stating the corresponding transmission queue of the bandwidth sensitive data in target data is adjusted to P3.
When the queue length of the corresponding transmission queue of the bandwidth sensitive data in the target data is by LmaxIt drops to
LminWith LmaxBetween when, the priority level of the corresponding transmission queue of bandwidth sensitive data in the target data remains P2.
When the queue length of the corresponding transmission queue of the bandwidth sensitive data in the target data is by LminIt rises to
LminWith LmaxBetween when, the priority level of the corresponding transmission queue of bandwidth sensitive data in the target data remains P3.
Wherein, Lmin<Lmax< L, LminWith LmaxFor the corresponding biography of bandwidth sensitive data of the pre-set target data
The adjustment threshold value of the priority level of defeated queue.L is the buffering of the corresponding transmission queue of the bandwidth sensitive data of the target data
The length in area.In order to avoid the priority level of the corresponding transmission queue of the bandwidth sensitive data of the target data frequently adjusts,
It can be by LminWith LmaxDifference setting it is larger.Illustratively, by LminIt is set as Lmin=50%*L, by LmaxIt is set as Lmax
=80%*L.
S505, first transmission node forward the data to be transmitted according to the priority of the transmission queue.
In the above-mentioned methods, the first transmission node determines the data type of data to be transmitted, if the data to be transmitted
Data type is target data, then passes through data to be transmitted described in established transmission path；If the data to be transmitted
Data type be non-targeted data, then by the SDN controller be the data to be transmitted calculating path transmission described in
Data to be transmitted.First transmission node determines the QoS demand of the data to be transmitted.And determine be used for transmission it is described to be passed
The priority of the transmission queue of transmission of data forwards the data to be transmitted according to the priority of the transmission queue.Improve net
The transmission quality of data to be transmitted in network.
In a kind of implementation of the application, a kind of network configuration interface is provided.It can manually be marked for staff
Remember target data and non-targeted data and the QoS demand of data to be transmitted queue is manually set.Such as: between certain two user into
Row data transmission, although being still that can still be marked using the first transmission node and the second transmission node as source, purpose access node
Non-targeted data are denoted as, it are not transmitted using transmission path.It is quick that time delay is set by the video data of certain video website
Feel data, improves its priority for transmitting queue.
The embodiment of the present application can carry out functional module or function list to service transmission device according to above method example
The division of member, for example, each functional module of each function division or functional unit can be corresponded to, it can also be by two or two
Above function is integrated in a processing module.Above-mentioned integrated module both can take the form of hardware realization, can also be with
It is realized in the form of software function module or functional unit.Wherein, module or unit are drawn in the embodiment of the present application
It is schematical for dividing, and only a kind of logical function partition, there may be another division manner in actual implementation.
As shown in fig. 6, described device is applied in SDN controller this application provides a kind of service transmission device, it is used for
Execute service transmission device above-mentioned.Described device includes:
Processing module 601, for obtaining the first data traffic information between the first transmission node and the second transmission node.
The processing module 601, if being also used to first data traffic information meets the first preset condition, according to institute
State the bandwidth demand that the first data traffic information determines transmission path；The transmission path is used for transmission target data, the mesh
Marking the corresponding source access node of data is first transmission node, and the corresponding purpose access node of the target data is described
Second transmission node.
The processing module 601, be also used to according to the bandwidth demand of the transmission path in first transmission node and
The transmission path is established between second transmission node.
Optionally, the processing module 601, is also used to: determining first path set；Wherein, the first path set
In include at least one first path；The first path is from first transmission node to the road of second transmission node
Diameter；
At least one first shortest path is determined from the first path set.At least one is first most short from described
The path for meeting the bandwidth demand of the transmission path is selected in path as the transmission path.
Optionally, the processing module 601, is also used to: when the transmission is not satisfied in all first shortest paths
When the bandwidth demand in path, executes following steps: S1, being obtained after deleting all i-th shortest paths in the i-th set of paths
I+1 set of paths.S2, at least one i+1 shortest path is determined again from the i+1 set of paths.S3, from least
The path for meeting the bandwidth demand of the transmission path is selected in one i+1 shortest path as the transmission path.
If the bandwidth demand of the transmission path is not satisfied in all i+1 shortest paths, the value of i adds 1 and repeats to hold
Row above-mentioned steps S1 to S3；Wherein, the initial value of the i is 1.If N set of paths is in the empty N set of paths
Path is not able to satisfy the QoS demand of business, then the transmission path establishes failure.If the N determined from N set of paths
Shortest path meets the bandwidth demand of the transmission path, then using the N shortest path as the transmission path, wherein
The value of the N is more than or equal to 2.
Optionally, in conjunction with Fig. 6, as shown in fig. 7, device provided by the embodiments of the present application can also include obtaining module 701.
Module 701 is obtained, for obtaining the second data traffic information between first transmission node and second transmission node.
The processing module 601 increases institute if being also used to second data traffic information meets the second preset condition
State the bandwidth of transmission path.If second data traffic information meets third preset condition, the transmission path is reduced
Bandwidth.If second data traffic information meets the 4th preset condition, the transmission path is deleted.
Optionally, the processing module 601 is also used to after the transmission path establishes failure or the SDN is controlled
Device increases after the bandwidth failure of the transmission path；
The target data is split into multiple secondary datas.Determine the flow information of each secondary data；And root
The bandwidth demand of each secondary data transmission path is determined according to the flow information of each secondary data.According to each institute
The bandwidth demand for stating secondary data transmission path is each described time between first transmission node and the second transmission node
Grade flow establishes transmission path.
Optionally, the processing module 601, if being also used to deposit between first transmission node and the second transmission node
In multiple transmission paths, then can judgement establish the first transmission path；Wherein, first transmission path is used for transmission described more
Data in a transmission path.If can, SDN controller determines the bandwidth demand of first transmission path, and according to described
The bandwidth demand of newly-built transmission path establishes first transmission path.The SDN controller deletes a plurality of transmission path.
As shown in figure 8, the device of another kind business transmission provided by the embodiments of the present application, described device are applied to transmission section
In point, method for executing the transmission of aforementioned business, described device includes:
Processing module 801, for determining the data type of data to be transmitted；Wherein, the data type includes number of targets
According to non-targeted data.
The processing module 801, if the data type for being also used to the data to be transmitted is target data, by built
Data to be transmitted described in vertical transmission path.
The processing module 801 passes through institute if the data type for being also used to the data to be transmitted is non-targeted data
State data to be transmitted described in the path transmission that SDN controller is data to be transmitted calculating.
The processing module 801, is also used to determine the QoS demand of the data to be transmitted.
The processing module 801 is also used to be used for transmission according to the data type and QoS demand determination described to be passed
The priority of the transmission queue of transmission of data.
The processing module 801 is also used to forward the data to be transmitted according to the priority of the transmission queue.
Optionally, the processing module 801, is also used to: determining the QoS demand of the data to be transmitted of different types of data；
Wherein, the target data can be divided into according to the QoS demand: time-delayed sensitive data, bandwidth safeguard data and general data；
The non-targeted data can be divided into according to the QoS demand: time-delayed sensitive data and general data.
Determine the corresponding priority for transmitting queue of data to be transmitted of different types of data, different QoS requirements；Wherein,
The priority level of the corresponding transmission queue of time-delayed sensitive data in the target data is P1；In the target data
There are two different priority levels P2, P3 for the corresponding transmission queue tool of bandwidth safeguard data；In the non-targeted data
The priority level of the corresponding transmission queue of time delay sensitive type data is P4；The target data with it is general in non-targeted data
The priority level for leading to the corresponding transmission queue of data is P5；The priority level is by sequence arrangement from high to low are as follows:
P1>P2>P4>P3>P5。
Optionally, the processing module 801, is also used to: when the corresponding biography of bandwidth sensitive data in the target data
The queue length of defeated queue is more than LmaxWhen, by the preferential of the corresponding transmission queue of the bandwidth sensitive data in the target data
Level adjustment is P2；
When the queue length of the corresponding transmission queue of the bandwidth sensitive data in the target data is less than LminWhen, by institute
The priority level for stating the corresponding transmission queue of the bandwidth sensitive data in target data is adjusted to P3.
When the queue length of the corresponding transmission queue of the bandwidth sensitive data in the target data is by LmaxIt drops to
LminWith LmaxBetween when, the priority level of the corresponding transmission queue of bandwidth sensitive data in the target data remains P2.
When the queue length of the corresponding transmission queue of the bandwidth sensitive data in the target data is by LminIt rises to
LminWith LmaxBetween when, the priority level of the corresponding transmission queue of bandwidth sensitive data in the target data remains P3.
Wherein, Lmin<Lmax< L, the L are the buffering of the corresponding transmission queue of the bandwidth sensitive data of the target data
The length in area.
Fig. 9 shows the data transmission device another kind being applied in SDN controller involved in above-described embodiment can
The structural schematic diagram of energy.The device includes: processor 902 and communication interface 903.Processor 902 be used for the movement of device into
Row control management, for example, executing the step of above-mentioned processing module 601 executes, and/or for executing techniques described herein
Other processes.Communication interface 903 is used to support the communication of device Yu other network entities, for example, executing above-mentioned acquisition module 701
The step of execution.Device can also include memory 901 and bus 904, memory 901 for storage device program code and
Data.
Wherein, above-mentioned processor 902 may be implemented or execute various exemplary in conjunction with described in present disclosure
Logic block, unit and circuit.The processor can be central processing unit, general processor, and digital signal processor is dedicated
Integrated circuit, field programmable gate array or other programmable logic device, transistor logic, hardware component or its
Any combination.It, which may be implemented or executes, combines various illustrative logic blocks described in present disclosure, unit
And circuit.The processor is also possible to realize the combination of computing function, such as combines comprising one or more microprocessors,
DSP and the combination of microprocessor etc..
Memory 901 can may include volatile memory, such as random access memory；The memory also may include
Nonvolatile memory, such as read-only memory, flash memory, hard disk or solid state hard disk；The memory can also include upper
State the combination of the memory of type.
Bus 904 can be expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..Bus 904 can be divided into address bus, data/address bus, control bus etc..For convenient for table
Show, only indicated with a thick line in Fig. 9, it is not intended that an only bus or a type of bus.
Figure 10 shows the data transmission device another kind being applied in transmission node involved in above-described embodiment can
The structural schematic diagram of energy.The device includes: processor 1002 and communication interface 1003.Processor 902 is for the movement to device
Control management is carried out, for example, executing the step of above-mentioned processing module 801 executes, and/or for executing techniques described herein
Other processes.Communication interface 1003 is used to support the communication of device Yu other network entities.Device can also include memory
1001 and bus 1004, memory 1001 is used for the program code and data of storage device.
Wherein, above-mentioned processor 1002 may be implemented or execute various exemplary in conjunction with described in present disclosure
Logic block, unit and circuit.The processor can be central processing unit, general processor, and digital signal processor is dedicated
Integrated circuit, field programmable gate array or other programmable logic device, transistor logic, hardware component or its
Any combination.It, which may be implemented or executes, combines various illustrative logic blocks described in present disclosure, unit
And circuit.The processor is also possible to realize the combination of computing function, such as combines comprising one or more microprocessors,
DSP and the combination of microprocessor etc..
Memory 1001 can may include volatile memory, such as random access memory；The memory also can wrap
Include nonvolatile memory, such as read-only memory, flash memory, hard disk or solid state hard disk；The memory can also include
The combination of the memory of mentioned kind.
Bus 1004 can be expanding the industrial standard structure (Extended Industry Standard
Architecture, EISA) bus etc..Bus 1004 can be divided into address bus, data/address bus, control bus etc..For convenient for
It indicates, is only indicated with a thick line in Figure 10, it is not intended that an only bus or a type of bus.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenienct and succinct, only with the division progress of above-mentioned each functional unit for example, in practical application, can according to need and will be upper
It states function distribution to be completed by different functional units, i.e., the internal structure of device is divided into different functional units, to complete
All or part of function described above.The specific work process of the system, apparatus, and unit of foregoing description, before can referring to
The corresponding process in embodiment of the method is stated, details are not described herein.
The embodiment of the present application also provides a kind of computer readable storage medium, and finger is stored in computer readable storage medium
Enable, when computer executes the instruction, the computer execute shown in above method embodiment in method flow SDN controller or
Each step that transmission node executes.
Wherein, computer readable storage medium, such as electricity, magnetic, optical, electromagnetic, infrared ray can be but not limited to or partly led
System, device or the device of body, or any above combination.The more specific example of computer readable storage medium is (non-poor
The list of act) it include: the electrical connection with one or more conducting wires, portable computer diskette, hard disk.Random access memory
(Random Access Memory, RAM), read-only memory (Read-Only Memory, ROM), erasable type may be programmed read-only
It is memory (Erasable Programmable Read Only Memory, EPROM), register, hard disk, optical fiber, portable
Compact disc read-only memory (Compact Disc Read-Only Memory, CD-ROM), light storage device, magnetic memory
Part or above-mentioned people are in appropriate combination or the computer readable storage medium of any other form of this field numerical value.
A kind of illustrative storage medium is coupled to processor, to enable a processor to from the read information, and can be to
Information is written in the storage medium.Certainly, storage medium is also possible to the component part of processor.Pocessor and storage media can be with
In application-specific IC (Application Specific Integrated Circuit, ASIC).In the application
In embodiment, computer readable storage medium can be any tangible medium for including or store program, which can be referred to
Enable execution system, device or device use or in connection.
The above, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, it is any
Change or replacement within the technical scope of the present application should all be covered within the scope of protection of this application.
Claims (11)
1. a kind of data transmission method, which is characterized in that be applied in software defined network SDN, the SDN includes: SDN control
Device and multiple transmission nodes, which comprises
The SDN controller obtains the first data traffic information between the first transmission node and the second transmission node；
If first data traffic information meets the first preset condition, the SDN controller is according to first data flow
Amount information determines the bandwidth demand of transmission path；The transmission path is used for transmission target data, and the target data is corresponding
Source access node is first transmission node, and the corresponding purpose access node of the target data is the second transmission section
Point；
The SDN controller according to the bandwidth demand of the transmission path first transmission node and the second transmission node it
Between establish the transmission path.
2. data transmission method according to claim 1, which is characterized in that the SDN controller is according to the transmission road
The bandwidth demand of diameter establishes the transmission path between first transmission node and the second transmission node
The SDN controller determines first path set；It wherein, include at least one first via in the first path set
Diameter；The first path is from first transmission node to the path of second transmission node；
At least one first shortest path is determined from the first path set；
It selects and meets described in the path conduct of the bandwidth demand of the transmission path from least one described first shortest path
Transmission path.
3. data transmission method according to claim 2, which is characterized in that the method also includes:
When the bandwidth demand of the transmission path is not satisfied in all first shortest paths, following steps are executed:
S1, the SDN controller obtain i+1 path set after deleting all i-th shortest paths in the i-th set of paths
It closes；
S2, at least one i+1 shortest path is determined again from the i+1 set of paths；
S3, the path conduct for meeting the bandwidth demand of the transmission path is selected from i+1 shortest path described at least one
The transmission path；
If the bandwidth demand of the transmission path is not satisfied in all i+1 shortest paths, the value of i adds 1 to lay equal stress on
Above-mentioned steps S1 to S3 is executed again；Wherein, the initial value of i is 1；
If N set of paths is not able to satisfy the QoS demand of business for the path in the empty or described N set of paths, described
Transmission path establishes failure；
If the N shortest path determined from N set of paths meets the bandwidth demand of the transmission path, by the N
Shortest path is as the transmission path, wherein the value of the N is more than or equal to 2.
4. data transmission method according to claim 1, which is characterized in that in the SDN controller according to the transmission
After the bandwidth demand in path establishes the transmission path between first transmission node and the second transmission node, the side
Method further include:
The SDN controller obtains the flow information of target data described in the transmission path；
If the flow information of the target data meets the second preset condition, the SDN controller increases the transmission path
Bandwidth；
If the flow information of the target data meets third preset condition, the SDN controller reduces the transmission path
Bandwidth；
If the flow information of the target data meets the 4th preset condition, the SDN controller deletes the transmission path.
5. data transmission method described in any one of -4 claims according to claim 1, which is characterized in that the method packet
It includes:
The transmission path establish failure after or the SDN controller increase the transmission path bandwidth failure after；
The target data is split into multiple secondary datas by the SDN controller；
The SDN controller determines the flow information of each secondary data；And according to the flow of each secondary data
Information determines the bandwidth demand of each secondary data transmission path；
The SDN controller is according to the bandwidth demand of each secondary data transmission path in first transmission node and
It is that each secondary flow establishes transmission path between two transmission nodes.
6. data transmission method according to claim 4, which is characterized in that reduce the transmission in the SDN controller
The bandwidth in path or after the SDN controller deletes the transmission path, the method also includes:
If there are multiple transmission paths between first transmission node and the second transmission node, the SDN controller is sentenced
It is disconnected to establish the first transmission path；Wherein, first transmission path is used for transmission the data in the multiple transmission path；
If can, SDN controller determines the bandwidth demand of first transmission path, and according to the band of the newly-built transmission path
Wide demand establishes first transmission path；
The SDN controller deletes a plurality of transmission path.
7. a kind of data transmission method, which is characterized in that be applied in software defined network SDN, the SDN includes: SDN control
Device and multiple transmission nodes；The described method includes:
First transmission node determines the data type of data to be transmitted；Wherein, the data type includes target data and non-mesh
Mark data；First transmission node is the source access node of the data to be transmitted；
If the data type of the data to be transmitted is target data, by be transmitted described in established transmission path
Data；
It is the number to be transmitted by the SDN controller if the data type of the data to be transmitted is non-targeted data
Data to be transmitted described in path transmission according to calculating；
First transmission node determines the QoS demand of the data to be transmitted；
First transmission node determines the biography for being used for transmission the data to be transmitted according to the data type and QoS demand
The priority of defeated queue；
First transmission node forwards the data to be transmitted according to the priority of the transmission queue.
8. a kind of data transmission device, which is characterized in that be applied in software defined network SDN, the SDN includes: SDN control
Device and multiple transmission nodes, described device include:
Processing module, for obtaining the first data traffic information between the first transmission node and the second transmission node；
The processing module, if being also used to first data traffic information meets the first preset condition, according to described first
Data traffic information determines the bandwidth demand of transmission path；The transmission path is used for transmission target data, the target data
Corresponding source access node is first transmission node, and the corresponding purpose access node of the target data is described second to pass
Defeated node；
The processing module is also used to be transmitted according to the bandwidth demand of the transmission path in first transmission node and second
The transmission path is established between node.
9. a kind of data transmission device, which is characterized in that be applied in software defined network SDN, the SDN includes: SDN control
Device and multiple transmission nodes；Described device includes:
Processing module, for determining the data type of data to be transmitted；Wherein, the data type includes target data and non-mesh
Mark data；
The processing module passes through established biography if the data type for being also used to the data to be transmitted is target data
Data to be transmitted described in defeated path transmission；
The processing module is controlled if the data type for being also used to the data to be transmitted is non-targeted data by the SDN
Device processed is data to be transmitted described in the path transmission of data to be transmitted calculating；
The processing module is also used to determine the QoS demand of the data to be transmitted；
The processing module is also used to be used for transmission the data to be transmitted according to the data type and QoS demand determination
Transmission queue priority；
The processing module is also used to forward the data to be transmitted according to the priority of the transmission queue.
10. a kind of data transmission device, which is characterized in that the data transmission device includes: processor, communication interface and storage
Device；Wherein, memory is for storing one or more programs, which includes computer executed instructions, when this
When data transmission device is run, processor executes the computer executed instructions of memory storage, so that data transmission dress
Set perform claim require in 1 to 6 or in claim 7 it is one of any described in data transmission method.
11. a kind of computer readable storage medium, instruction is stored in the computer readable storage medium, which is characterized in that
When described instruction is run on computers so that computer perform claim require in 1 to 6 or in claim 7 it is one of any
The data transmission method.
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