CN106911593B - A kind of industrial control network array dispatching method based on SDN framework - Google Patents
A kind of industrial control network array dispatching method based on SDN framework Download PDFInfo
- Publication number
- CN106911593B CN106911593B CN201510975044.0A CN201510975044A CN106911593B CN 106911593 B CN106911593 B CN 106911593B CN 201510975044 A CN201510975044 A CN 201510975044A CN 106911593 B CN106911593 B CN 106911593B
- Authority
- CN
- China
- Prior art keywords
- data
- time
- transmission
- window
- method based
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000013459 approach Methods 0.000 claims description 3
- 238000012163 sequencing technique Methods 0.000 claims description 2
- 208000033748 Device issues Diseases 0.000 claims 1
- 238000012545 processing Methods 0.000 abstract description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 241001269238 Data Species 0.000 description 1
- 101100311330 Schizosaccharomyces pombe (strain 972 / ATCC 24843) uap56 gene Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 101150018444 sub2 gene Proteins 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- 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
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4185—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by the network communication
-
- 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
- H04L47/6215—Individual queue per QOS, rate or priority
-
- 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
- H04L47/622—Queue service order
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Quality & Reliability (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention provides a kind of industrial control network array dispatching methods based on SDN framework.Present invention incorporates time triggers and event trigger mechanism to carry out integrated data processing.Two major classes are splitted data into, one kind is the highest industry control message of requirement of real-time；Another kind of other data referred in industrial network, including audio, video and common monitoring data etc., and priority is set for every kind of data.Odd even time trigger window is set, and it alternately opens, when primary sources window is opened can only transmission of control signals, when secondary sources window is opened according to the high low transmission data of priority of different types of data, wherein background data follows transmission mechanism of doing one's best.The performances such as packet loss of the design of time trigger window size concerning data transmission delay and whole network, therefore it is most important that reasonable window size is arranged.The present invention has ensured the real-time and reliability of the industrial control network based on SDN framework.
Description
Technical field
The present invention relates to industrial time controlling network field, specifically a kind of industrial control network based on SDN framework
Network array dispatching method.
Background technique
With the rapid development of the technologies such as control, communication, network, industrial control network technology is developed rapidly, and is contained
Lid range is not limited solely to single factory, is more focused on from the field control of factory to the integrated management of enterprise, this is to next
Foundry industry network brings new technological challenge.Meanwhile with the development of internet technology, software defined network (SDN) is answered
With more and more extensive, a kind of industrial control network framework based on SDN is increasingly by the concern of industry.
There are numerous types of data, including control data, audio data, video data, monitoring in next-generation industrial network
The requirement of real-time of data and other background datas, every kind of data is different, needs to propose a kind of Real-time Ability mechanism to meet
The QOS demand of different business.Industrial control network based on SDN utilizes the characteristic of software defined network control and forward separating,
By the data forwarding mode in controller centrally controlled network, different priority is distributed for different data, and to different excellent
The data of first grade are scheduled.
Queue priority is that the data that will need to forward are lined up according to priority orders, and then scheduler priority allows height
The queue of priority first forwards.But there are many kinds of the scheduling mechanisms of scheduler, different scheduling mechanisms will lead to network performance
Great changes have taken place, therefore most important for the research of scheduling mechanism.Current existing queue scheduling algorithm includes SP
(Strict-Priority, strict-priority), WFQ (Weighted Fair Queue, Weighted Fair Queuing) and WRR
(Weighted Round Robin, weighted polling queue).
The rapid emergence of next-generation industrial network is so that the real time problems of the industrial network based on SDN are increasingly closed
Note, therefore a kind of queuing scheduling mechanism suitable for the new network is proposed to meet the real-time transmission requirement of different business extremely
It closes important.
Summary of the invention
For the industrial time controlling network based on SDN, the invention proposes a kind of industrial control networks based on SDN framework
Network array dispatching method meets the real-time of data in industrial control network using the scheduling mechanism that event is combined with the time
It is required that.
Present invention technical solution used for the above purpose is: a kind of dual trigger queue based on Time And Event
Dispatching method, comprising the following steps:
Step 1: after data are sent out from publishing side, first sending registration information in the storage unit in controller
It is stored, in case subsequent SUBSCRIBE end is subscribed to；
Step 2: after having subscription end to send subscription request to controller, controller checks in storage unit whether there is satisfaction
The publishing side of demand subscribes to success message if there is then returning to subscription end, otherwise returns and subscribe to failed message；
Step 3: after subscribing to successfully, controller calculates the transmission for meeting and needing according to the information of transmitting terminal and subscription end
Path；
Step 4: controller generates flow table information, is issued in the web-transporting device of the transmission path approach；
Step 5: publishing side starts to be believed after data enter web-transporting device according to flow table to subscription end transmission message
Different types of data are assigned in different queues by breath；
Step 6: according to the time trigger state of the related queue stored in flow table, alternating opens or closes the corresponding time
Window, the transmission state of control data queue outlet；
Step 7: transmission decisions device transmits data according to data priority mechanism and the variation of the odd even of data transmission window；
Step 8: when odd number window is opened, transmitting control data/according to priority transmit other kinds of data, work as idol
Other kinds of data/transmitting is transmitted according to priority when number window is opened and controls data, is repeated after arriving next transmission device
Step 5 is to step 8 until subscription end obtains the subscription information all needed from publishing side.
The type of the data include control data, audio data, video data, monitoring data, background data and other
Data.
The data are divided into two major classes according to type, and one kind is control data, possess highest requirement of real-time；It is another kind of
Including all data in addition to controlling data, and according to priority putting in order from high in the end are as follows: audio data, video counts
According to, monitoring data, background data and other data.
The dispatch state of the corresponding two kinds of queues of alternate time trigger state in the step 6:
One kind is q1:q2:q3:q4=1000, represents and only has first time trigger door to open, transmitting control data；
Another kind is q1:q2:q3:q4=0111, and time trigger door of the representative other than first time trigger door is all
It opens, transmits the data other than controlling data.
The alternating of the time trigger state is alternately present at the same time.
The trigger mechanism of the decision-making device includes time trigger or event triggering.
The time trigger refers to the sending time window by controlling different types of data, controls the different type number
According to alternately transmission.
The event triggering, which refers to, to be placed data into according to type of service in different queues, and the excellent of different business is arranged
First grade, as the scheduling foundation in non-control time window.
Grade that the control data possess that All factors being equal, preference will be give to carries out label, the sending time slots of marking of control data to control data
With receive time slot, and then determine control data send sequencing；The sending time slots and reception time slot are in publishing side
Time slot under circulation time, the sending time slots are the circulation time label where when transmitting terminal sends the data, the reception
Time slot refers to that each forwarding device in network issues the circulation time label where the data.
The transmission sequence of the determining control data follows following rule: preferential to pass in the case where sending time slots difference
Defeated sending time slots control data earlier；In the identical situation of sending time slots, transmits and receives time slot and control data earlier.
The size of the time window and the size of data frame can influence the end-to-end time delay of data transmission.
The present invention has the following advantages and beneficial effects:
1. solving the real-time queue scheduling problem of the industrial control network based on SDN framework, variety classes industry is realized
The real-time reliable transmission of business.
2. different transmission queues is arranged using time and event dual trigger mechanism, for different business in the present invention, and leads to
It crosses alt time window and sends data, realize real-time reliable transmission.
3. reducing the propagation delay time and delay variation of data by real-time queue dispatching method, meeting different business
Requirement of real-time.
4. the target point for reducing time delay is determined by the time-delay analysis of network transmission model, by carrying out reality to data label
Existing high-priority data first receives first to send mechanism, as much as possible to reduce the time delay of the high data service of requirement of real-time,
Meet the application demand of industrial scene.
Detailed description of the invention
Fig. 1 is the queue scheduling schematic diagram in forwarding device of the invention；
Fig. 2 is the time-delay analysis schematic diagram of mode of the invention；
Fig. 3 is multi-service transport network topological diagram of the invention；
Fig. 4 is the data frame timing diagram that multi-hop transmission data queue of the invention dispatches；
Fig. 5 is queue scheduling flow chart of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention realizes the array dispatching method with Real-time Ability in industrial control network field, the Industry Control
Network is that the queue scheduling schematic diagram based on software defined network framework, in forwarding device is as shown in Figure 1.Work based on SDN
Industry controls network support openflow agreement, and join the team out the team and storage forwarding etc. of data are realized by flow table.In controller collection
Network topology, registration subscription information etc. are stored, and calculates the forward-path of publishing side and subscription end.In order to guarantee multi-service number
According to real-time, need to be fitted into the data in different types of queue, in queue after data enter forwarding device and exporting
How to dispatch is focus of attention of the present invention.
The array dispatching method proposed in the present invention is reduced by minimizing the residence time of data frame in a switch
The end-to-end time delay of data, to meet control real-time property.Time shaft is divided into the identical odd even of length by this method to be dispatched
Time slot, the data received are marked using slot index is received, residence time and time slot scheduling of the data frame in switching equipment
Width is related, and time slot scheduling width depends on the maximum frame size and maximum end-to-end time delay of control data.According to industry
The requirement of network related protocol is controlled, controls the maximum delay of data no more than 20 microseconds.
In order to meet the requirement of real-time of business, i.e., reduce the time delay of network as far as possible, the present invention analyzes publishing side to ordering
The Time Delay Model at end is read, as shown in Figure 2.As can be seen that data are sent to subscription end, Delay Factor from transmitting terminal from attached drawing 2
It include: Δ P and physical layer time delay Δ t of the data processing time delay in publishing side from application layer to MAC layerx；Publishing side to exchange
The propagation delay Δ of machinetrans；Time delay Δ S of the physical layer reception data to MAC layer port in switching equipmentin；Inside switching equipment
Flow table inquiry and relay forwarding time delay Δ Sprop；Switching equipment exit port time delay Δ SoutWith Δ tx；Switching equipment arrives subscription end
Propagation delay Δtrans；Processing delay Δ S of the subscription end from physical layer to application layer.Present invention time delay cardinal index of interest
According to the time delay from entrance switching equipment to being issued from switching equipment.
The data type being related in the present invention includes control data, audio data, video data, test data and background
Data etc., data are divided into 4 kinds by case to simplify the explanation, i.e. control data, audio data, video data and other numbers
According to other data are using service mechanism of doing one's best.The most big end for giving the maximum frame sign of various data in table 1 and allowing
It is delayed to end.
1 multiple business information table of table
| Data type | Maximum frame sign | Maximum end-to-end time delay |
| Control data | 128bytes | 100us/5hops |
| Audio data | 256bytes | 2ms/7hops |
| Video data | 256bytes | 50ms/7hops |
| Other data | 256bytes | n.a. |
Then using the information in the analysis multi-service industrial control network of attached multi-service transport case macroscopic view shown in Fig. 3
Exchanging form.There are 4 kinds of business listed in table 1 in attached drawing 3, pub1 to sub3 is video data service；Pub2 to sub0
It is control data service with pub4 to sub2；Pub3 to sub1 is audio data service；Other data are using transmission of doing one's best
Mechanism does not consider its requirement of real-time.As can be seen from Figure 3 S2 is core node, and a plurality of Business Stream all passes through the node, number
It is as shown in Figure 1 according to scheduling process schematic diagram of the packet in S2.
The attached scheduling timing diagram being represented in Fig. 4 is this stream of N2-S1-S2-N4 in Fig. 3, it is assumed that when data flow through link1
Data time sequence as shown in the first row time shaft in figure, when data by S1 to Article 2 chain road when, the second row in timing such as Fig. 3
It is shown.Compare front two row discovery, becomes (2,1) when control data (1,1) reaches Article 2 link label after S1.Wherein include
Two expression formula general structures in number are (x, y), and y represents the time slot where when data issue, place when x represents data receiver
Time slot.Adding tagged purpose is to generate random ordering in data transmission in order to prevent, and lead to some data transmission lags, is passed through
Tagging can will be apparent that finding out that the data packet is come from which time slot, processing progress compared with other data packets, therefore can be with
The data packet slow to processing progress enters in queue in advance after entering switching equipment, so that the processing speed of business of the same race
It is roughly the same.The time window of the processing queue of S1 and S2 switching equipment is of different sizes in Fig. 4, and the size of time window influences number
According to residence time of the packet in switching equipment, and then the time delay of data packet is influenced, therefore the setting of time window size is to Guan Chong
It wants.Can substantially find out from Fig. 4 control data can reliable transmission, propagation delay time, can in two circulation time intervals
Meet the requirement of real-time of transmission industrial control data.
Business is analyzed from Successful transmissions whole process is registered to, provides the detail flowchart of dispatching method, such as Fig. 5
It is shown.
Step 1: after data are sent out from publishing side, first sending registration information in the storage unit in controller
It is stored, in case subsequent SUBSCRIBE end is subscribed to；
Step 2: after having subscription end to send subscription request to controller, controller checks in storage unit whether there is satisfaction
The publishing side of demand subscribes to success message if there is then returning to subscription end, otherwise returns and subscribe to failed message；
Step 3: after subscribing to successfully, controller calculates the transmission for meeting and needing according to the information of transmitting terminal and subscription end
Path；
Step 4: controller generates flow table information, is issued in the web-transporting device of the transmission path approach；
Step 5: publishing side starts to be believed after data enter web-transporting device according to flow table to subscription end transmission message
Different types of data are assigned in different queues by breath；
Step 6: according to the time trigger state of the related queue stored in flow table, alternating opens or closes the corresponding time
Window, the transmission state of control data queue outlet；
Step 7: transmission decisions device transmits data according to data priority mechanism and the variation of the odd even of data transmission window；
Step 8: when odd number window is opened, transmitting control data/according to priority transmit other kinds of data, work as idol
Other kinds of data/transmitting is transmitted according to priority when number window is opened and controls data, is repeated after arriving next transmission device
Step 5 is to step 8 until subscription end obtains the subscription information all needed from publishing side.
Claims (9)
1. a kind of industrial control network array dispatching method based on SDN framework, which comprises the following steps:
Step 1: after data are sent out from publishing side, sending registration information in the storage unit in controller carry out first
Storage, in case subsequent SUBSCRIBE end is subscribed to；
Step 2: after having subscription end to send subscription request to controller, controller checks in storage unit whether there is meet demand
Publishing side, if there is then to subscription end return subscribe to success message, otherwise return subscribe to failed message；
Step 3: after subscribing to successfully, controller calculates the transmission path for meeting and needing according to the information of transmitting terminal and subscription end；
Step 4: controller generates flow table information, is issued in the web-transporting device of the transmission path approach；
Step 5: publishing side starts to send message to subscription end, will according to flow table information after data enter web-transporting device
Different types of data are assigned in different queues；
Step 6: according to the time trigger state of the related queue stored in flow table, alternating opens or closes corresponding time window
Mouthful, the transmission state of control data queue outlet；
Step 7: transmission decisions device transmits data according to data priority mechanism and the variation of the odd even of data transmission window；
Step 8: the transmitting control data when odd number window is opened transmit other types according to priority when even number window is opened
Data or other kinds of data are transmitted according to priority when odd number window is opened, the transmitting control when even number window is opened
Data processed, to next transmission device after repeat step 5 to step 8 until subscription end is from the subscription that all needs of publishing side acquisition
Until information.
2. a kind of industrial control network array dispatching method based on SDN framework according to claim 1, feature exist
In the type of the data includes control data, audio data, video data, monitoring data, background data and other data.
3. a kind of industrial control network array dispatching method based on SDN framework according to claim 1 or 2, feature
It is, the data are divided into two major classes according to type, and one kind is control data, possess highest requirement of real-time；Another kind of packet
Include all data in addition to controlling data, and according to priority putting in order from high in the end are as follows: audio data, video data,
Monitoring data, background data and other data.
4. a kind of industrial control network array dispatching method based on SDN framework according to claim 1, feature exist
In the dispatch state of the corresponding two kinds of queues of alternate time trigger state in the step 6:
One kind is q1:q2:q3:q4=1000, represents and only has first time trigger door to open, transmitting control data；
Another kind is q1:q2:q3:q4=0111, represents the time trigger door other than first time trigger door and all opens,
Transmit the data other than controlling data.
5. a kind of industrial control network array dispatching method based on SDN framework according to claim 1 or 4, feature
It is, the alternating of the time trigger state is alternately present at the same time.
6. a kind of industrial control network array dispatching method based on SDN framework according to claim 1, feature exist
In the trigger mechanism of the decision-making device includes time trigger or event triggering；
The time trigger refers to the sending time window by controlling different types of data, controls the different types of data and hands over
For transmission；
The event triggering, which refers to, to be placed data into according to type of service in different queues, and the preferential of different business is arranged
Grade, as the scheduling foundation in non-control time window.
7. a kind of industrial control network array dispatching method based on SDN framework according to claim 6, feature exist
In, the control data grade that possesses that All factors being equal, preference will be give to, label, the sending time slots of marking of control data and reception are carried out to control data
Time slot, and then determine the sequencing that control data are sent；The sending time slots and reception time slot are in the circulation of publishing side
Between under time slot, the sending time slots are the circulation time labels where when transmitting terminal sends the data, and the reception time slot is
Refer to that each forwarding device issues the circulation time label where the data in network.
8. a kind of industrial control network array dispatching method based on SDN framework according to claim 7, feature exist
In the transmission sequence of the determining control data follows following rule: in the case where sending time slots difference, prioritised transmission is sent
Time slot controls data earlier；In the identical situation of sending time slots, transmits and receives time slot and control data earlier.
9. a kind of industrial control network array dispatching method based on SDN framework according to claim 1, feature exist
In the size of the time window and the size of data frame can influence the end-to-end time delay that data are transmitted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975044.0A CN106911593B (en) | 2015-12-23 | 2015-12-23 | A kind of industrial control network array dispatching method based on SDN framework |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975044.0A CN106911593B (en) | 2015-12-23 | 2015-12-23 | A kind of industrial control network array dispatching method based on SDN framework |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106911593A CN106911593A (en) | 2017-06-30 |
| CN106911593B true CN106911593B (en) | 2019-09-13 |
Family
ID=59200294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510975044.0A Active CN106911593B (en) | 2015-12-23 | 2015-12-23 | A kind of industrial control network array dispatching method based on SDN framework |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106911593B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110809012B (en) * | 2018-08-06 | 2023-04-07 | 中车株洲电力机车研究所有限公司 | Train network communication data scheduling control method |
| CN109729154B (en) * | 2018-12-13 | 2021-10-15 | 四川省能源投资集团有限责任公司 | Simple message subscription and publishing service method based on controller |
| CN112612745A (en) * | 2020-12-15 | 2021-04-06 | 海宁奕斯伟集成电路设计有限公司 | Data transmission method and device, electronic equipment and readable storage medium |
| CN112953803B (en) * | 2021-02-10 | 2022-07-08 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Airborne redundant network data transmission method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414958A (en) * | 2007-10-18 | 2009-04-22 | 华为技术有限公司 | Method and apparatus for scheduling business |
| CN101459966A (en) * | 2009-01-06 | 2009-06-17 | 北京交通大学 | Ad Hoc network MAC layer QoS guarantee method based on IEEE802.16 |
| CN101459932A (en) * | 2009-01-06 | 2009-06-17 | 北京交通大学 | Wireless Mesh network MAC layer bandwidth request and allocation method based on IEEE802.16d standard |
| CN104702638A (en) * | 2013-12-06 | 2015-06-10 | 华为技术有限公司 | Event subscribing and dispatching method and device |
| CN104767695A (en) * | 2015-04-20 | 2015-07-08 | 清华大学 | Stream scheduling method for task classes in data center |
| CN104836750A (en) * | 2015-05-04 | 2015-08-12 | 大连理工大学 | Data center network flow scheduling method based on round-robin |
-
2015
- 2015-12-23 CN CN201510975044.0A patent/CN106911593B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101414958A (en) * | 2007-10-18 | 2009-04-22 | 华为技术有限公司 | Method and apparatus for scheduling business |
| CN101459966A (en) * | 2009-01-06 | 2009-06-17 | 北京交通大学 | Ad Hoc network MAC layer QoS guarantee method based on IEEE802.16 |
| CN101459932A (en) * | 2009-01-06 | 2009-06-17 | 北京交通大学 | Wireless Mesh network MAC layer bandwidth request and allocation method based on IEEE802.16d standard |
| CN104702638A (en) * | 2013-12-06 | 2015-06-10 | 华为技术有限公司 | Event subscribing and dispatching method and device |
| CN104767695A (en) * | 2015-04-20 | 2015-07-08 | 清华大学 | Stream scheduling method for task classes in data center |
| CN104836750A (en) * | 2015-05-04 | 2015-08-12 | 大连理工大学 | Data center network flow scheduling method based on round-robin |
Non-Patent Citations (1)
| Title |
|---|
| 基于SDN的数据中心网络资源调度机制;汪正康，周鹏，肖俊超，武延军;《计算机系统应用》;20150815;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106911593A (en) | 2017-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Sun et al. | Age of information: A new metric for information freshness | |
| Yates | Age of information in a network of preemptive servers | |
| CN106911593B (en) | A kind of industrial control network array dispatching method based on SDN framework | |
| Kam et al. | Age of information under random updates | |
| US11057294B2 (en) | Route control method and route setting device | |
| CN101449532B (en) | Method and system for functional redundancy based quality of service | |
| CN113316091B (en) | Information sending method and device applied to unmanned aerial vehicle cluster | |
| CN102726009B (en) | Data flow exchange control method and relative device | |
| Zhong et al. | Real-time communication in WIA-PA industrial wireless networks | |
| CN112532409B (en) | Network parameter configuration method, device, computer equipment and storage medium | |
| CN102111819B (en) | Delay-tolerant network | |
| CN101502065A (en) | Methods for providing quality of service by applying back-pressure in sequencing | |
| CN101009649A (en) | Queue management in a network processor | |
| CN103354528B (en) | Method and device for multi-stream synchronization | |
| Lai et al. | Performance modeling and analysis of TCP and UDP flows over software defined networks | |
| CN105490962A (en) | QoS management method based on OpenFlow network | |
| CN101958847A (en) | Selection method of distributed QOS (Quality of Service) routes | |
| KR20190114404A (en) | Network system and data trasmission method based on device clustering in lorawan communication | |
| Xiong et al. | Congestion performance improvement in wireless sensor networks | |
| Haapola et al. | The effect of concurrent multi-priority data streams on the MAC layer performance of IEEE 802.11 p and C-V2X mode 4 | |
| CN101478826B (en) | Communication scheduling method and system for wireless sensor network | |
| Alam et al. | Energy-aware QoS provisioning for wireless sensor networks: Analysis and protocol | |
| Çakmak et al. | A Review: Active queue management algorithms in mobile communication | |
| Farhan et al. | Internet of things scalability: Communications and data management | |
| Hsu et al. | Delay-optimal scheduling for heterogeneous users in NOMA networks |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |