CN108777633B - Intention pattern type industrial SDN northbound interface system supporting data scheduling and interaction method - Google Patents
Intention pattern type industrial SDN northbound interface system supporting data scheduling and interaction method Download PDFInfo
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- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
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Abstract
The invention relates to an ideogram industrial SDN northbound interface system supporting data scheduling and an interaction method, and belongs to the technical field of industrial networks. On the basis of fully considering the characteristics of heterogeneous industrial network services, aiming at the problems of complex network configuration process, interface function limitation and the like when a network manager deploys complex network services by using a common northbound interface, an intention northbound interface system with certain autonomous decision-making capability is added between a control layer and an application layer, so that the complex configuration process in the industrial network is shielded. Meanwhile, on the basis of the system, a group of intentional graph northbound interfaces are provided for services such as deterministic scheduling of data and transmission reliability guarantee, decoupling of a network technology and the network interfaces is achieved, and service deployment difficulty is reduced.
Description
Technical Field
The invention belongs to the technical field of industrial networks, and relates to an ideogram industrial SDN northbound interface system supporting data scheduling and an interaction method.
Background
An SDN (Software Defined Network) is an emerging Network architecture, which physically decouples a highly-coupled control plane and a data forwarding plane in a conventional Network, and implements centralized management and control of a control layer on underlying Network devices through a unified southbound interface protocol, thereby bringing a revolution to the Network field. The northbound interface is an important link between the application layer and the control layer, and is an important ring for a user to deploy network services and change network configuration. At present, the northbound interface can be divided into the following according to the difference of design angles: a functional northbound interface and an intent northbound interface. The functional northbound interface is open to the maximum extent by paying attention to network capacity, and the interface of the northbound interface is generally used for realizing basic network management and protocol configuration and has strong technical correlation; the intention northbound interface side is more important for realizing network service, and a network manager of the application layer only needs to express the network intention of the network manager in a declarative term without paying attention to specific implementation details. Therefore, the intention type northbound interface can effectively reduce the difficulty of service deployment and accelerate service innovation.
At present, the application of the SDN technology to manage the heterogeneous industrial network is also widely concerned by the industry, however, when the complex service requirements are realized, such as data flow scheduling, cross-network scheduling, transmission reliability guarantee, and the like, the problems of complex network configuration flow, interface function limitation, and the like are faced by adopting the common northbound interface. At the moment, the intention-type northbound interface provides a new solution for the intention-type northbound interface, so that an intention-type SDN northbound interface system based on business requirements is designed, the problems that data flow scheduling in a heterogeneous industrial network is complex, transmission reliability is difficult to adjust by software and the like are solved, and the method has important significance for intelligent upgrading of the industrial network.
Disclosure of Invention
In view of this, the present invention provides an intention pattern industrial SDN northbound interface system and an interaction method supporting data scheduling, and provides a set of popular and easily understood intention northbound interfaces for services such as deterministic scheduling and transmission reliability guarantee, so as to decouple a network technology and a network interface and reduce service deployment difficulty.
In order to achieve the purpose, the invention provides the following technical scheme:
the system uses a declarative term to describe three types of network services aiming at establishment of scheduling data flow, adjustment of data flow attribute and method and transmission reliability guarantee, and realizes a group of intention northbound interfaces irrelevant to technology; the system comprises two parts: the system comprises a parser and a policy analyzer, wherein the policy analyzer comprises a service analysis module, a core processing unit, an instruction set module and a result checking module, and the modules and the units have the following relations:
(1) the core part of the analyzer is a grammar analyzing module which has the function of analyzing the declarative terms in specific grammar formats in the northbound interface request according to the service objects, the service attributes and the service methods, and sending the analysis result to a service analyzing module in a strategy analyzer for subsequent decision judgment;
(2) the service analysis module analyzes the service object in the analysis content, determines the subnet object related to the request, and judges whether the request relates to cross-network operation;
(3) the core processing unit comprises a plurality of strategy analysis modules of the industrial network, and the modules are used for finishing scheduling decision, scheduling resource calculation and transmission reliability calculation;
(4) the instruction set module generates a series of instructions according to the calculation result of the strategy analysis module; the instruction comprises three parts: the method comprises the following steps of instruction targets, instruction information and actions, wherein the instruction targets refer to specific network nodes, routing and switch network equipment, the instruction information comprises a superframe table, a routing table, a link table, switch flow table information and switch queue information, and the specific actions support 5 types: configuration, deletion, modification, addition and query;
(5) and the result checking module checks the feedback result and the specific index of the service requirement and provides a checking result so as to further adjust the system.
Based on the system and the method for interaction of the intention type industrial SDN northbound interface supporting data scheduling, the creation of the scheduling data flow comprises the following steps:
s101: after receiving a service request of a user, the parser parses the service request according to a specific grammar rule, and extracts an object, an attribute and a method in the service request;
s102: the service analysis module judges whether to cross the network according to the service object; if the operation is not the cross-network operation, the analysis result is sent to the corresponding strategy analysis module, and S103 and S104 are executed, and if the operation is the cross-network operation, the analysis result is sent to the cross-network scheduling strategy analysis module, and S105 and S106 are executed;
s103: the strategy analysis module judges the sub-network according to the node address or the flow _ id and generates attribute configuration information for devices such as related nodes and routes in the sub-network according to the attribute characteristics specified by the user;
s104: the strategy analysis module executes a scheduling algorithm according to a service method specified by a user, and calculates scheduling resource configuration information such as a route, a link, a superframe and the like in the industrial control network; it should be noted that, under the condition that the user does not specify the service method, the default method is a FIFO (First Input First Output, First in First out) scheduling policy;
s105: the cross-network scheduling strategy analysis module generates cross-network configuration information for the subnet gateway;
s106: the cross-network scheduling strategy analysis module executes a scheduling algorithm according to a service method specified by a user, and calculates scheduling resource configuration information such as routing, link, superframe and the like in the industrial control network and configuration information such as bandwidth, path and the like in the industrial backhaul network; it should be noted that, under the condition that the user does not specify a method, the default method is the FIFO scheduling policy;
s107: aiming at all the configuration information, the instruction module generates an instruction set according to three characteristics of an instruction target, instruction information and action and sends the instruction set to a function processing module of the controller;
s108: the result checking module waits for the feedback of the bottom layer controller, if the feedback meets the established requirement, the successful creation information is fed back, and if the feedback does not meet the established requirement, further adjustment is needed; and at this point, creating a scheduling data stream between the nodes.
Based on the system of the intention type industry SDN northbound interface interaction method supporting data scheduling, the adjustment of the data flow attribute and the method comprises the following steps:
s201: after receiving a service request of a user, the parser parses the service request according to a specific grammar rule, and extracts an object, an attribute and a method in the service request;
s202: the strategy analysis module judges the specific operation type according to the keywords in the intention type description, if the operation is deletion operation, S203 is executed, and if the operation is modification operation, S204 is executed;
s203: the strategy analysis module determines the related network resources to be deleted, and the object of the deletion operation in the system can only be a stream, but not the specific attribute of the stream;
s204: the strategy analysis module regenerates the attribute configuration information according to the modified attribute and simultaneously generates scheduling resource configuration information according to a re-execution scheduling algorithm;
s205: generating all configuration information into an instruction set according to three characteristics of an instruction target, instruction information and action, and issuing the instruction set to a function processing module of the controller;
s206: the result checking module waits for the feedback of the bottom layer controller, if the result meets the set index, the configuration success information is fed back, and if the result does not meet the set index, further adjustment is needed; and at this point, the adjustment of the attributes and the method of the scheduling stream is completed.
The system-based method for interaction of the intention type industrial SDN northbound interface supporting data scheduling comprises the following steps of:
s301: after receiving a service request of a user, the parser parses the service request according to a specific grammar rule, and extracts an object, an attribute and a method in the service request;
s302: the strategy analysis module distinguishes node/route transmission reliability guarantee and data stream transmission reliability guarantee according to the service object, if the node or the equipment is, S303 is executed, and if the node or the equipment is the data stream, S304 is executed;
s303: the strategy analysis module automatically adjusts a scheduling strategy according to the index requirement and the forwarding success rate of the current network node, for example, a load balancing scheduling strategy can effectively reduce the data packet loss of part of network nodes caused by network congestion;
s304: the strategy analysis module presets the retransmission times and the preferred channel with higher quality of the network node on the scheduling path according to the index requirement and the actual transmission success rate, and ensures that the data accurately reaches the target node;
s305: the strategy analysis module executes the scheduling algorithm again to generate scheduling resource configuration information;
s306: the instruction module generates all configuration information into an instruction set according to three characteristics of an instruction target, instruction information and action and sends the instruction set to the function processing module of the controller;
s307: the result checking module waits for the feedback of the bottom layer controller, if the result meets the set index, the configuration success information is fed back, and if the result does not meet the set index, further adjustment is needed; thus, the transmission reliability securing work is completed.
Further, the intended northbound interface includes 4 classes: scheduling a data stream creating interface, a data stream attribute and method adjusting interface, a transmission reliability guaranteeing interface and a query interface; the data stream attribute and method adjusting interface comprises a scheduling stream attribute and method modifying interface and a data stream deleting interface, and the transmission reliability guaranteeing interface can be detailed into a scheduling stream transmission reliability guaranteeing interface and a node/route transmission reliability guaranteeing interface.
Further, the scheduling data flow creating interface only needs to give IPv6 addresses of a source node and a destination node in the industrial control network by a user, and an intention processing unit on the upper layer of the SDN controller can autonomously create a scheduling data flow for the user; meanwhile, the interface also provides a plurality of selectable attribute configuration and scheduling methods, and typical attributes comprise: deadline, periodicity of data, adjustable period value, data stream priority and communication mode, an exemplary scheduling method includes: FIFO scheduling method, priority scheduling method, channel quality weighted scheduling method and load balancing scheduling method.
Furthermore, the data stream attribute and method adjusting interface can realize the modification of the specified scheduling data stream attribute and method, and the scheduling stream deleting interface can support the simultaneous deletion of a plurality of data streams but does not support the operation of the attribute and method.
Further, the transmission reliability guarantee interface can guarantee the transmission reliability of the node/route and the transmission reliability of the data stream; wherein, the node/route transmission reliability is measured by the forwarding success rate attribute appointed by the user; the transmission reliability of the data stream is measured by the data transmission success rate attribute appointed by the user;
the transmission reliability indicator also supports level description: the A to E are 5 levels in total, and the reliability requirements are sequentially decreased; however, while the reliability of some data flows or nodes is guaranteed, other attributes may be sacrificed or resources of other data flows or nodes may be occupied.
The invention has the beneficial effects that:
(1) the method aims at the problems of complex network configuration flow, interface function limitation and the like when a common northbound interface realizes complex service requirements. On the basis of fully considering the opening capability and the service characteristics of an industrial network interface, the invention provides an intention type northbound interface system suitable for a heterogeneous industrial network based on SDN to realize, supports users to use popular and easily understood intention type description terms to reflect own service requirements, simplifies the interaction flow of network application and a controller, and realizes the decoupling of a network technology and a network interface.
(2) The method aims at the problem that dynamic adjustment of attributes such as communication modes, periods and deadline of scheduling data streams in the heterogeneous industrial network is difficult. The invention provides a method for adjusting data stream attributes and realizing a method interface based on an intention northbound interface system. The user can flexibly configure various attributes of the data stream through the interface, and meanwhile, the interface also has the capabilities of certain self-adaptive adjustment and self-selection of a scheduling strategy, so that the learning cost of a network manager can be reduced.
(3) The method aims at the problem that the reliability of node/routing and data stream transmission in the heterogeneous industrial network is difficult to control. The invention provides a method for ensuring transmission reliability based on an intention northbound interface system, which not only can realize the transmission success rate of data streams appointed by a user, but also can support the adjustment of the forwarding success rate of partial nodes or routing equipment, thereby enhancing the flexibility of the network.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
FIG. 1 is a general block diagram of a northbound intent interface system;
FIG. 2 is an interaction flow diagram of a scheduling data stream creation interface;
FIG. 3 is an interaction flow diagram of a scheduling data stream attribute and method interface adjustment interface;
fig. 4 is an interaction flowchart of the transmission reliability guarantee interface.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The composition of the heterogeneous industrial network in this embodiment includes: first, all underlying Industrial subnets, such as a WIA-PA network and an ISA100 network, need to be accessed to an Industrial backhaul network for unified management of an Industrial SDN controller. Meanwhile, in order to realize the deterministic transmission of the cross-network industrial data in the backhaul network, the industrial backhaul network in this embodiment adopts a TSN (time sensitive network).
Secondly, in order to realize that each network device in the underlying industrial network is addressable, the embodiment adopts the IPv6 technology to allocate an IPv6 address to each network device. Each industrial sub-network is identified by IPv6 prefix, and node devices and routing devices in the network are distinguished by primary numbers. It should be noted that ISA100 network supports IPv6 addressing, while the WIA-PA network needs to implement mapping between device addresses in the network and IPv6 addresses through gateway software.
Finally, the embodiment details the design scheme of the northbound interface system of the intention type from four aspects of the structure of the northbound interface system of the intention type, the implementation flow of creating the scheduling data stream, the implementation flow of adjusting the attribute of the scheduling data stream, and the implementation flow of ensuring the transmission reliability, and finally lists and explains the request and reply messages of the 6 northbound interfaces.
Structure description of one-purpose northbound interface system
Fig. 1 is an overall structure of an intentional northbound interface system, which is located between an industrial SDN controller and an application plane, wherein the industrial SDN controller needs to have a capability of centralized management of an underlying heterogeneous industrial network, and simultaneously needs to have a basic function interface of an industrial control network (WIA-PA network, ias100.11a network) so as to interface the system with the industrial SDN controller.
The system comprises two parts: the system comprises a parser and a policy analyzer, wherein the policy analyzer comprises a service analysis module, a core processing unit, an instruction set module and a result checking module; the modules and units have the following relations:
(1) the core part of the analyzer is a grammar analyzing module, and the grammar analyzing module is mainly used for analyzing the description content of a specific grammar format in the northbound interface request according to a service object, a service attribute and a service method, and sending an analysis result to a service analyzing module in a strategy analyzer for subsequent decision judgment;
(2) the service analysis module analyzes the service object in the analysis content, determines the subnet object related to the request, and judges whether the request relates to cross-network operation;
(3) the core processing unit comprises a plurality of network policy analysis modules which are mainly used for finishing scheduling decision, scheduling resource calculation, transmission reliability calculation and the like;
(4) the instruction set module generates a series of instructions according to the calculation result of the strategy analysis module, and the instructions comprise three parts: the method comprises the following steps of instruction targets, instruction information and actions, wherein the instruction targets refer to specific network nodes, routing, switches and other network devices, the instruction information comprises a superframe table, a routing table, a link table, switch flow table information and switch queue information, and the specific actions support 5 types: configuration, deletion, modification, addition and query;
(5) the result checking module is mainly used for checking the feedback result and the specific index of the service requirement and giving a checking result so as to further adjust the system.
Second, the implementation flow description of creating scheduling data flow
Fig. 2 is an interaction flow of a scheduling data stream creation interface, which specifically includes the following steps:
the method comprises the following steps: after receiving a service request of a user, the parser parses the service request according to a specific grammar rule, and extracts an object, an attribute and a method in the service request;
step two: the service analysis module judges whether to cross the network according to the service object; if the operation is not cross-network operation, the analysis result is sent to a corresponding strategy analysis module, and a third step and a fourth step are executed, if the operation is cross-network operation, the analysis result is sent to a cross-network scheduling strategy analysis module, and a fifth step and a sixth step are executed;
step three: the strategy analysis module judges the sub-network according to the node address or the flow _ id and generates attribute configuration information for devices such as related nodes and routes in the sub-network according to the attribute characteristics specified by the user;
step four: the strategy analysis module executes a scheduling algorithm according to a service method specified by a user, and calculates scheduling resource configuration information such as a route, a link, a superframe and the like in the industrial control network;
step five: the cross-network scheduling strategy analysis module generates cross-network configuration information for the subnet gateway;
step six: the cross-network scheduling strategy analysis module executes a scheduling algorithm according to a service method specified by a user, and calculates scheduling resource configuration information such as routing, link, superframe and the like in the industrial control network and configuration information such as bandwidth, path and the like in the industrial backhaul network;
step seven: aiming at all the configuration information, the instruction module generates an instruction set according to three characteristics of an instruction target, instruction information and action and sends the instruction set to a function processing module of the controller;
step eight: the result checking module waits for the feedback of the bottom layer controller, if the feedback meets the established requirement, the successful creation information is fed back, and if the feedback does not meet the established requirement, further adjustment is needed; and at this point, creating a scheduling data stream between the nodes.
Third, the implementation flow description for adjusting the attribute of the scheduling data stream
Fig. 3 is an interaction flow of scheduling data stream attributes and adjusting interfaces of the method, which specifically includes the following steps:
the method comprises the following steps: after receiving a service request of a user, the parser parses the service request according to a specific grammar rule, and extracts an object, an attribute and a method in the service request;
step two: the strategy analysis module judges the specific operation type according to the keywords in the intention type description, if the operation is deletion operation, the third step is executed, and if the operation is modification operation, the fourth step is executed;
step three: the strategy analysis module determines the related network resources to be deleted;
step four: the strategy analysis module regenerates the attribute configuration information according to the modified attribute and simultaneously generates scheduling resource configuration information according to a re-execution scheduling algorithm;
step five: generating all configuration information into an instruction set according to three characteristics of an instruction target, instruction information and action, and issuing the instruction set to a function processing module of the controller;
step six: the result checking module waits for the feedback of the bottom layer controller, if the result meets the set index, the configuration success information is fed back, and if the result does not meet the set index, further adjustment is needed; and finishing the adjustment work of the scheduling flow attribute and the scheduling method.
Fourthly, description of implementation process for guaranteeing transmission reliability
Fig. 4 is an interaction flow of a transmission reliability guarantee interface, which specifically includes the following steps:
the method comprises the following steps: after receiving a service request of a user, the parser parses the service request according to a specific grammar rule, and extracts an object, an attribute and a method in the service request;
step two: the strategy analysis module distinguishes node/route transmission reliability guarantee and data stream transmission reliability guarantee according to the service object, if the node or the equipment is the node, the third step is executed, and if the data stream is the data stream, the fourth step is executed;
step three: the strategy analysis module automatically adjusts a scheduling strategy according to the index requirement and the forwarding success rate of the current network node, for example, a load balancing scheduling strategy can effectively reduce the data packet loss of part of network nodes caused by network congestion;
step four: the strategy analysis module presets the retransmission times and the preferred quality channel of the network node on the scheduling path according to the index requirement and the actual transmission success rate, and ensures that the data stream accurately reaches the target node;
step five: the strategy analysis module executes the scheduling algorithm again to generate scheduling resource configuration information;
step six: the instruction module generates all configuration information into an instruction set according to three characteristics of an instruction target, instruction information and action and sends the instruction set to the function processing module of the controller;
step seven: the result checking module waits for the feedback of the bottom layer controller, if the result meets the set index, the configuration success information is fed back, and if the result does not meet the set index, further adjustment is needed; thus, the transmission reliability securing work is completed.
Five, intention type northbound interface design example
The embodiment will be illustrated in a manner of describing a north interface in detail by using REST related technology.
Table 1 details the term format and function description of three types of intention-type northbound interfaces, the interfaces implement input of intention-type description terms uniformly by using a POST method provided by the HTTP protocol, and the general format of the intention-type terms is (object, attribute name: attribute, method;), wherein the object includes a scheduling data stream, a switch, a node, and a route, the attribute is for the object, and the method refers to a scheduling policy. It should be noted that not all terms support the input method feature, but the method feature in all terms is optional, and when the user does not specify a method, the system will operate in a default method.
In the terminology description of the northbound interface, which is intended to be a graphical diagram, to reflect the type of user operation, the terminology supports 4 keywords: ESTABLISH, DELETE, MODIFY, and QUERY correspond to create, DELETE, MODIFY, and QUERY actions, respectively.
TABLE 1 North interface of intent terminology and description
The following will describe in detail the request and reply messages of 6 types of the intended northbound interfaces proposed by the present invention, including: the system comprises a scheduling data flow creating interface, a scheduling flow deleting interface, a scheduling flow attribute and method modifying interface, a scheduling flow transmission reliability guaranteeing interface, a node/route transmission reliability guaranteeing interface and a query interface.
(1) Scheduling flow creation interface
(2) Deleting a dispatch flow interface
(3) Scheduling flow attribute and method modification interface
(4) Query interface
(5) Stream transmission reliability guarantee interface
(6) Node/route transmission reliability guarantee interface
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (8)
1. Support intention type industry SDN northbound interface system of data scheduling, its characterized in that: the system uses a declarative term to describe aiming at the establishment of scheduling data stream, the adjustment of data stream attribute and method and the transmission reliability guarantee service from the perspective of heterogeneous industrial network service requirement, and realizes a group of intention type northbound interfaces which are irrelevant to the technology; the system comprises two parts: the system comprises a parser and a policy analyzer, wherein the parser comprises a syntax parsing module; the strategy analyzer comprises a service analysis module, a core processing unit, an instruction set module and a result checking module, wherein the service analysis module, the core processing unit and the instruction set module are sequentially in signal connection, and the result checking module is in signal connection with the core processing unit; the grammar analysis module is in signal connection with the service analysis module;
the modules and units have the following relations:
(1) the core part of the analyzer is a grammar analyzing module which has the function of analyzing the declarative terms in specific grammar formats in the northbound interface request according to the service objects, the service attributes and the service methods, and sending the analysis result to a service analyzing module in a strategy analyzer for subsequent decision judgment;
(2) the service analysis module analyzes the service object in the analysis content, determines the subnet object related to the request, and judges whether the request relates to cross-network operation;
(3) the core processing unit comprises a plurality of strategy analysis modules of the industrial network, and the modules are used for finishing scheduling decision, scheduling resource calculation and transmission reliability calculation;
(4) the instruction set module generates a series of instructions according to the calculation result of the strategy analysis module; the instruction comprises three parts: the method comprises the following steps of instruction targets, instruction information and actions, wherein the instruction targets refer to specific network nodes, routing and switch network equipment, the instruction information comprises a superframe table, a routing table, a link table, switch flow table information and switch queue information, and the specific actions support 5 types: configuration, deletion, modification, addition and query;
(5) and the result checking module checks the feedback result and the specific index of the service requirement and provides a checking result so as to further adjust the system.
2. The system of claim 1, wherein the SDN northbound interface comprises: the northbound interface includes 4 classes: scheduling a data stream creating interface, a data stream attribute and method adjusting interface, a transmission reliability guaranteeing interface and a query interface; the data stream attribute and method adjusting interface comprises a scheduling stream attribute and method modifying interface and a data stream deleting interface, and the transmission reliability guaranteeing interface can be detailed into a scheduling stream transmission reliability guaranteeing interface and a node/route transmission reliability guaranteeing interface.
3. The system of claim 2, wherein the SDN northbound interface comprises: the dispatching data flow creating interface only needs a user to give IPv6 addresses of a source node and a destination node in the industrial control network, and an intention processing unit on the upper layer of the SDN controller can autonomously create a dispatching data flow for the user; meanwhile, the interface also provides a plurality of selectable attribute configuration and scheduling methods, and typical attributes comprise: deadline, periodicity of data, adjustable period value, data stream priority and communication mode, an exemplary scheduling method includes: FIFO scheduling method, priority scheduling method, channel quality weighted scheduling method and load balancing scheduling method.
4. The system of claim 2, wherein the SDN northbound interface comprises: the data stream attribute and method adjusting interface can realize the modification of the specified scheduling data stream attribute and method, and the scheduling stream deleting interface can support the simultaneous deletion of a plurality of data streams but does not support the operation of the attribute and method.
5. The system of claim 2, wherein the SDN northbound interface comprises: the transmission reliability guarantee interface can guarantee the transmission reliability of nodes/routes and the transmission reliability of data streams; wherein, the node/route transmission reliability is measured by the forwarding success rate attribute appointed by the user; the transmission reliability of the data stream is measured by the data transmission success rate attribute appointed by the user;
the transmission reliability indicator also supports level description: the A to E are 5 levels in total, and the reliability requirements are sequentially decreased; however, while the reliability of some data flows or nodes is guaranteed, other attributes may be sacrificed or resources of other data flows or nodes may be occupied.
6. The system of claim 1, wherein the method supports an intention industrial SDN northbound interface interaction method for data scheduling, and comprises: the creation of the scheduled data stream comprises the steps of:
s101: after receiving a service request of a user, the parser parses the service request according to a specific grammar rule, and extracts an object, an attribute and a method in the service request;
s102: the service analysis module judges whether to cross the network according to the service object; if the operation is not the cross-network operation, the analysis result is sent to the corresponding strategy analysis module, and S103 and S104 are executed, and if the operation is the cross-network operation, the analysis result is sent to the cross-network scheduling strategy analysis module, and S105 and S106 are executed;
s103: the strategy analysis module judges the sub-network according to the node address or the flow _ id and generates attribute configuration information for the related nodes and the routing equipment in the network according to the attribute characteristics specified by the user;
s104: the strategy analysis module executes a scheduling algorithm according to a service method specified by a user and calculates the routing, link and superframe scheduling resource configuration information in the industrial control network; under the condition that a user does not specify a service method, the default method is a first-in first-out (FIFO) scheduling strategy;
s105: the cross-network scheduling strategy analysis module generates cross-network configuration information for the subnet gateway;
s106: the cross-network scheduling strategy analysis module executes a scheduling algorithm according to a service method specified by a user, and calculates routing, link and superframe scheduling resource configuration information in the industrial control network and bandwidth and path configuration information in the industrial backhaul network; under the condition that a user does not specify a service method, the default method is an FIFO scheduling strategy;
s107: aiming at the configuration information, the instruction module generates an instruction set according to three characteristics of an instruction target, instruction information and action and sends the instruction set to a function processing module of the controller;
s108: the result checking module waits for the feedback of the bottom layer controller, if the feedback meets the established requirement, the successful creation information is fed back, and if the feedback does not meet the established requirement, further adjustment is needed; and at this point, creating a scheduling data stream between the nodes.
7. The system of claim 1, wherein the method supports an intention industrial SDN northbound interface interaction method for data scheduling, and comprises: the adjustment of the data stream properties and method comprises the steps of:
s201: after receiving a service request of a user, the parser parses the service request according to a specific grammar rule, and extracts an object, an attribute and a method in the service request;
s202: the strategy analysis module judges the specific operation type according to the keywords in the intention type description, if the operation is deletion operation, S203 is executed, and if the operation is modification operation, S204 is executed;
s203: the strategy analysis module determines the relevant network resources to be deleted according to the service objects and generates the configuration information of the deleted resources, and in addition, the objects of the deletion operation in the system can only be streams but not specific attributes of the streams;
s204: the strategy analysis module regenerates the attribute configuration information according to the modified attribute and simultaneously generates scheduling resource configuration information according to a re-execution scheduling algorithm;
s205: generating all configuration information into an instruction set according to three characteristics of an instruction target, instruction information and action, and issuing the instruction set to a function processing module of the controller;
s206: the result checking module waits for the feedback of the bottom layer controller, if the result meets the set index, the configuration success information is fed back, and if the result does not meet the set index, further adjustment is needed; and at this point, the adjustment of the attributes and the method of the scheduling stream is completed.
8. The system of claim 1, wherein the method supports an intention industrial SDN northbound interface interaction method for data scheduling, and comprises: the data transmission reliability guarantee comprises the following steps:
s301: after receiving a service request of a user, the parser parses the service request according to a specific grammar rule, and extracts an object, an attribute and a method in the service request;
s302: the strategy analysis module distinguishes node/route transmission reliability guarantee and data stream transmission reliability guarantee according to the service object, if the node or the equipment is, S303 is executed, and if the node or the equipment is the data stream, S304 is executed;
s303: the strategy analysis module automatically adjusts a scheduling strategy according to the index requirement and the forwarding success rate of the current network node, for example, a load balancing scheduling strategy can effectively reduce the data packet loss of part of network nodes caused by network congestion;
s304: the strategy analysis module presets the retransmission times and the preferred quality channel of the network node on the scheduling path according to the index requirement and the actual transmission success rate, and ensures that the data stream accurately reaches the target node;
s305: the strategy analysis module executes the scheduling algorithm again to generate scheduling resource configuration information;
s306: the instruction module generates all configuration information into an instruction set according to three characteristics of an instruction target, instruction information and action and sends the instruction set to the function processing module of the controller;
s307: the result checking module waits for the feedback of the bottom layer controller, if the result meets the set index, the configuration success information is fed back, and if the result does not meet the set index, further adjustment is needed; thus, the transmission reliability securing work is completed.
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| CN111385110B (en) * | 2018-12-27 | 2023-01-24 | 中兴通讯股份有限公司 | Network management method and device |
| CN111490893B (en) * | 2019-01-29 | 2022-02-22 | 华为技术有限公司 | Method, device and system for establishing network forwarding model |
| CN110166305B (en) * | 2019-06-04 | 2020-04-21 | 电子科技大学 | Method and system for managing application QoE (quality of experience) based on intention |
| CN110460483B (en) * | 2019-09-25 | 2022-04-12 | 重庆邮电大学 | Profinet and Modbus equipment heterogeneous networking method based on SDN |
| CN110912823B (en) * | 2019-12-12 | 2022-02-25 | 北京电子工程总体研究所 | SDN and IPv6 reliable routing method oriented to heterogeneous wired and wireless converged network |
| CN111209273B (en) * | 2019-12-29 | 2023-11-14 | 航天信息股份有限公司企业服务分公司 | Configurable ERP system data unloading method and device |
| WO2021134343A1 (en) * | 2019-12-30 | 2021-07-08 | 华为技术有限公司 | Intent decomposition method and apparatus |
| CN112565336A (en) * | 2020-11-06 | 2021-03-26 | 西安电子科技大学 | Intelligent Internet of things centralized control method, system, medium, equipment and application |
| CN114513404B (en) * | 2021-12-30 | 2023-11-03 | 网络通信与安全紫金山实验室 | Method and device for configuring time-sensitive network and computer-readable storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326884A (en) * | 2013-05-30 | 2013-09-25 | 烽火通信科技股份有限公司 | Service flow aware system and method combining flow detection and package detection in SDN |
| CN104253820A (en) * | 2014-10-16 | 2014-12-31 | 北京邮电大学 | Software defined network safety control system and control method |
| CN106685832A (en) * | 2016-11-08 | 2017-05-17 | 重庆邮电大学 | WIA-PA field network/IPv6 backhaul network combination scheduling method based on SDN |
| CN106936857A (en) * | 2015-12-29 | 2017-07-07 | 中国电信股份有限公司 | A kind of connection management method of mixed cloud, SDN controllers and mixing cloud system |
| WO2017160641A1 (en) * | 2016-03-16 | 2017-09-21 | Sprint Communications Company L.P. | Software defined network (sdn) application integrity |
| CN107919982A (en) * | 2017-10-31 | 2018-04-17 | 江苏省未来网络创新研究院 | A kind of DCI management platforms and its management method |
-
2018
- 2018-05-18 CN CN201810481361.0A patent/CN108777633B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103326884A (en) * | 2013-05-30 | 2013-09-25 | 烽火通信科技股份有限公司 | Service flow aware system and method combining flow detection and package detection in SDN |
| CN104253820A (en) * | 2014-10-16 | 2014-12-31 | 北京邮电大学 | Software defined network safety control system and control method |
| CN106936857A (en) * | 2015-12-29 | 2017-07-07 | 中国电信股份有限公司 | A kind of connection management method of mixed cloud, SDN controllers and mixing cloud system |
| WO2017160641A1 (en) * | 2016-03-16 | 2017-09-21 | Sprint Communications Company L.P. | Software defined network (sdn) application integrity |
| CN106685832A (en) * | 2016-11-08 | 2017-05-17 | 重庆邮电大学 | WIA-PA field network/IPv6 backhaul network combination scheduling method based on SDN |
| CN107919982A (en) * | 2017-10-31 | 2018-04-17 | 江苏省未来网络创新研究院 | A kind of DCI management platforms and its management method |
Non-Patent Citations (2)
| Title |
|---|
| SDN应用及北向接口技术研究;程莹等;《信息通信技术》;20140228;全文 * |
| SDN应用接口及实现技术研究;赵云;《中国优秀硕士学位论文全文数据库》;20170228;全文 * |
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