CN110972151B - Maritime communication multi-level control method, storage medium and system - Google Patents
Maritime communication multi-level control method, storage medium and system Download PDFInfo
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Abstract
The invention discloses a maritime communication multi-stage control method, a storage medium and a system, wherein the maritime communication multi-stage control method is applied to a maritime communication multi-stage control system, the maritime communication multi-stage control system comprises local controllers arranged in different ships and a super controller arranged on a shore base, and the method comprises the following steps: the super controller receives network topology information reported by the local controller; and the super controller constructs a global network topology according to the network topology information and guides the communication of the local controllers according to the global network topology. The super controller can integrally control the marine communication after receiving the network topology information reported by the local controller, thereby guiding the selection of the outlet channel of each ship and effectively solving the problem of eliminating channel selection blind areas caused by unstable bandwidth and time delay.
Description
Technical Field
The invention relates to the field of marine communication, in particular to a marine communication multi-level control method, a storage medium and a system.
Background
The networking mode inside a marine ship is usually an autonomous local area network, but when the ship needs to communicate with a shore-based ship or other ships, a proper channel and a proper routing scheme in the current communication environment need to be selected. At present, common channels include a satellite communication channel and a microwave communication channel, and channels of communication modes such as LTE and the like can be considered in a place near a shore base. Architectures such as ATM and ethernet are often used inside ships, but SDN architectures have been a trend.
In order to select a proper channel, SDN networking is really a solution in a ship, a controller may obtain global topology information, determine attributes such as priority, required bandwidth, time delay and the like of an egress packet, and select a proper egress channel for a data stream to a certain extent on the basis of determining a port rate of each network manager that is exported. However, the ship internal controller can only control the link condition in the ship integrally, does not have a global view of marine communication, cannot acquire information such as specific conditions of local area networks and wireless links of all ships, and cannot stop loss in time when external conditions change. For example, when the condition of a wireless link is good, the rates of all local area network edge gateway ports connected to the wireless link are very high, so that according to the calculation result of a local controller, all data flows go through the link, a plurality of local area network outlet data flows select the channel in a short time, and congestion is caused, and thus it is seen that the controller in the local area network cannot guarantee the timeliness of the whole situation; for another example, when the position of the marine vessel changes frequently, the routing table cannot be updated in time, which may result in lower routing efficiency and larger broadband occupation.
For example, patent publication No. CN109347970A discloses a marine communication system including an internet transmission part, a communication network transmission part, and an internet of things transmission part, which uses internet of things link to shipboard devices, and a shore-based data center as the internet transmission part, and completes the establishment of the communication network using short waves and satellites. However, in the patent, the problem that the communication channel itself may have transmission link time break due to weather causes to cause route oscillation is not solved, so that the selection of the channel is still a vacancy.
The existing literature also discloses a sea battlefield communication network organization planning system architecture based on the SDN, but the control function of the system is very thin, and the control plane has only one layer, which means that all information under the architecture is completed by the one/group controller, and various functions such as communication situation generation, service transmission centralized control, communication guarantee scheme generation, subnet networking and the like are realized. However, on the sea, under the condition of various data types (such as data from sensor systems such as radar, sonar and the like, weapon control systems, tactical data systems, information processing systems, formation command centers and the like, and types including data, audio, video, images, analog signals and the like) and extremely large data processing capacity, no matter a single controller or a controller cluster is difficult to achieve low time delay under the large operation requirement, blind spots of control are easy to occur, and the sea warfare condition is complex, so that a big problem is generated in a millicentimeter difference, therefore, the requirement on communication quality is extremely high, and no consideration is given to factors such as outlet bandwidth, time delay and the like, which is a main problem of the document.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, an object of the present invention is to provide a method, a storage medium, and a system for controlling multiple levels of maritime communication, which are used to solve the problem of blind channel selection caused by lack of global view in the existing maritime communication.
The technical scheme of the invention is as follows:
a marine communication multi-stage control method is applied to a marine communication multi-stage control system, the marine communication multi-stage control system comprises local controllers arranged inside different ships and a shore-based super controller, and the method comprises the following steps:
the super controller receives network topology information reported by the local controller;
and the super controller constructs a global network topology according to the network topology information and guides the communication of the local controllers according to the global network topology.
The offshore communication multi-level control method, wherein the step of receiving the network topology information reported by the local controller by the super controller comprises:
the local controller controls the flow in the ship domain and collects network topology information;
the local controller dynamically selects the network topology information according to the strength of an intra-domain channel, and reports the dynamically selected network topology information to the super controller after filtering and compressing the dynamically selected network topology information;
and the super controller receives the network topology information reported by the local controller.
The offshore communication multi-level control method, wherein the step of receiving the network topology information reported by the local controller by the super controller comprises:
the local controller controls the flow in the ship domain, collects network topology information and performs priority sequencing on the content in the network topology information;
when the local controller is limited in the intra-domain channel, the network topology information is filtered and compressed according to the priority sequence and then is sequentially reported to the super controller;
and the super controller receives the network topology information reported by the local controller.
The offshore communication multi-level control method comprises the steps that the network topology information comprises equipment online information, a link stable state, a safety state, an administrator state, a network element working rate and outlet channel information.
The offshore communication multi-level control method comprises the following steps that the super controller constructs a global network topology according to the network topology information, and conducts communication guidance on the local controllers according to the global network topology, wherein the steps comprise:
the super controller draws a global network topology in a control center according to the acquired network topology information;
and the super controller performs communication guidance on the local controller by adopting a mode of issuing a guidance message to the local controller.
The offshore communication multi-level control method comprises the steps that the guide message comprises routing planning information and outlet channel selection information.
The offshore communication multi-stage control method is characterized in that an OXP protocol is established between the super controller and the local controller.
A storage medium, wherein the storage medium stores one or more programs, which are executed by one or more processors to implement the steps of the maritime communication multi-level control method of the present invention.
A marine communication multi-level control system comprises local controllers arranged inside different ships and a shore-based super controller, wherein the super controller is used for executing the steps of the marine communication accumulation control method.
The offshore multistage control system is characterized in that the super controller is in communication connection with a control center, and the local controller is in communication connection with an SDN networking inside a ship.
Has the advantages that: the super controller can integrally control the marine communication after receiving the network topology information reported by the local controller, thereby guiding the selection of the outlet channel of each ship and effectively solving the problem of eliminating channel selection blind areas caused by unstable bandwidth and time delay.
Drawings
Fig. 1 is a schematic diagram of a multi-stage control system for maritime communication according to a preferred embodiment of the present invention.
Fig. 2 is a flow chart of a multi-stage control method for maritime communication according to a preferred embodiment of the present invention.
Detailed Description
The present invention provides a method, a storage medium and a system for multi-level control of marine communication, and the present invention will be further described in detail below in order to make the objects, technical solutions and effects of the present invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
The invention will be further explained by the description of the embodiments with reference to the drawings.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a marine communication multistage control system provided by the present invention, and as shown in the figure, the marine communication multistage control system includes local controllers 10 arranged inside different ships and a super controller 20 arranged on a shore basis, where the super controller 20 is configured to receive network topology information reported by the local controllers 10, construct a global network topology according to the network topology information, and finally perform communication guidance on the local controllers 10 according to the global network topology.
In this embodiment, the super controller 20 is deployed on a shore basis, the super controller 20 establishes a communication connection with a control center, the local controller 10 is located inside each ship, and the local controller 10 may establish a communication connection with an SDN networking inside the ship. The super controller in this embodiment can establish a communication protocol with a local controller inside each ship, and after the super controller constructs a global network topology according to the network topology information reported by the local controller 10, the super controller can control the whole maritime communication, thereby guiding the selection of the egress channels of each ship.
In the multistage control system for marine communication provided in this embodiment, a local controller deployed inside a ship can manage, control and optimize a network in a jurisdiction, and report network topology information to the super controller only when necessary, so that occupation of control flow on a marine overall communication broadband is reduced, a control blind spot is eliminated, local communication can be optimized under a certain condition, communication quality inside the ship is improved, and the super controller can control the overall condition inside the ship immediately.
Meanwhile, the local controller can complete local control functions of route planning, fault early warning, sensor data processing and the like of internal networking of ships, so that the information transmission quantity between the local controller and the super controller is not large, the requirement on broadband is not high, and the burden on communication resources which are in short supply on the sea can not be caused.
The marine communication multi-stage control system provided by the embodiment solves the problems that blind spots exist in the existing ship outlet channel selection and the marine communication condition is difficult to realize the integral control, and the marine communication multi-stage control system provided by the embodiment is used with the bottom layer equipment in the ship in an auxiliary manner, so that a more complete marine communication network can be constructed together.
Based on the offshore communication multi-stage control system, an embodiment of the present invention further provides a offshore communication multi-stage control method, where as shown in fig. 2, the method includes the steps of:
s10, the super controller receives the network topology information reported by the local controller;
and S20, the super controller constructs a global network topology according to the network topology information and guides the local controller to communicate according to the global network topology.
In this embodiment, the local controller is responsible for communication between the inside of the ship where the local controller is located and sensors around the local controller, and can independently complete routing to any area inside the ship through an inter-domain routing protocol. The local controller can control the flow in the ship domain, collect network topology information at the same time, and report the network topology information to the super controller after filtering and compressing the network topology information; and after the super controller constructs a global network topology according to the network topology information reported by the local controller, the overall control of the maritime communication can be realized, so that the selection of the outlet channels of all ships is guided.
In some embodiments, the network topology information includes, but is not limited to, device presence information, link stability status, security status, administrator status, network element operating rate, and egress channel information.
In some embodiments, to guarantee the bandwidth of the maritime communication link, the local controller may report the collected network topology information by using a dynamic reporting mechanism, where the step of dynamically reporting the network topology information by the local controller includes: the local controller controls the flow in the ship domain and collects network topology information; the local controller dynamically selects the network topology information according to the strength of an intra-domain channel, and reports the dynamically selected network topology information to the super controller after filtering and compressing the dynamically selected network topology information; and the super controller receives the network topology information reported by the local controller.
For example, when the channel state of a domain is not good (the bandwidth is narrow), only reporting the difference value of the link rate exceeding a certain range, where the difference value refers to an increase value or a decrease value of the link rate, and replacing the detailed information state with larger information amount with the difference value, similar to an information compression mode, or reporting the necessary reported data of link failure or on-line (down/up); when the channel state is better (the bandwidth is wider), more parameters can be selected from the network topology information for reporting.
In this embodiment, the local controller reports the collected network topology information through the dynamic reporting mechanism, which can effectively reduce the occupation of the data stream on the bandwidth, thereby ensuring the traffic occupation ratio of the data stream.
In some embodiments, to solve the latency problem, the local controller may report the network topology information collected by the local controller by using a prioritization mechanism, where the reporting of the network topology information by the local controller by using the prioritization mechanism includes: the local controller controls the flow in the ship domain, collects network topology information and performs priority sequencing on the content in the network topology information; when the local controller is limited in the intra-domain channel, the network topology information is filtered and compressed according to the priority sequence and then is sequentially reported to the super controller; and the super controller receives the network topology information reported by the local controller.
For example, the local controller may prioritize the collected network topology information in advance, for example, security status > link stability status > egress channel information > device online information > administrator status; when the channel in the ship domain is limited, the local controller preferentially reports the network topology information ranked in the front according to the pre-ranking. In this embodiment, the local controller reports the collected network topology information through the priority ranking reporting mechanism, so that the problem of time delay can be effectively reduced.
In some embodiments, the super controller draws a global network topology in a control center according to the acquired network topology information, and labels the conditions of each region, and the super controller can generally master the global situation of maritime communication according to the global network topology, and guides the communication of the local controller to make up for the blind spot of the local controller in the global view.
In some embodiments, since the maritime communication is complex, the communication between ships presents a high dynamic characteristic, and the situation of excessive hops can occur only by updating the routing table through the inter-domain routing protocol of the local controller, thereby increasing the burden of the communication link. At the moment, the super controller can plan the global routing according to the constructed global network topology and guide the local routing behavior.
In some specific embodiments, when the super controller performs communication guidance on the local controller, the local controller may encounter a slight lag of an instruction issued by the super controller, which may result in poor instruction timeliness, and at this time, the instruction has only a certain optimization meaning for the local controller, rather than a real guidance meaning; or limited by bandwidth limitations, the direction from the super controller is a reduced compression instruction, and the local controller needs to refer to the instruction instead of making a decision according to the instruction. Therefore, the local controller should use the super controller shampoo instruction as a reference instruction, rather than a full control instruction. The local controllers in the domain are mainly subject to the real-time situation of the link in the local domain when making the decision.
In some embodiments, the local controller may also report information such as an instant bandwidth and a throughput rate of each egress channel to the super controller at regular time, and the super controller is convenient to evaluate the global communication situation at sea after receiving the information.
In some embodiments, the local controller may further calculate and evaluate ship internal information to obtain current ship state information, where the ship internal information includes a safe and stable state, emergency information, extreme climate encounter information, and the like, and the local controller may report the current ship state information to the super controller, and the super controller is convenient to master a global ship state at sea after receiving the current ship state information.
In some embodiments, the local controller may also report a busy communication condition to the super controller, and the super controller may increase a communication frequency for a busy local controller according to the busy degree of the super controller, and adjust an ratio of an egress channel communication bandwidth in a busy area, so as to guide communication in the part of area.
In some embodiments, the super controller performs communication guidance on the local controller by issuing a guidance message to the local controller. As an example, the guidance message includes routing planning information and egress channel selection information.
In some embodiments, the super controller establishes an OXP protocol with the local controller. Specifically, after the local controller comes online, the local controller communicates with the super controller for control flow of basic information such as handshake and heartbeat by using an oxp (open Exchange protocol) protocol. The OXP protocol is used for a protocol for communication between Super and Domain, and needs the Domain controller to upload information such as a host computer and the like to the Super controller, perform routing planning when the Domain controller initiates cross-Domain communication, and issue a message to the Domain controller. Each local network is regarded as a logical switch by the OXP protocol, the global topology is composed of the logical switches and links among domains, instructions in the logical switches are understood and completed by a Domain controller, internal network details are hidden outwards, and only one edge port (called as a virtual port) is exposed, so that the complexity of the global network is reduced.
The OXP protocol can also use four modes of simplicity, high level, compression and common according to a communication environment, wherein in the compression mode, messages are compressed into messages only carrying basic information, and the OXP protocol can be suitable for scenes that link resources are pretty and the requirement on the control flow bandwidth utilization rate is very strict, which may occur at sea.
When the OXP protocol is used, the super controller serves as a super controller in the OXP, and the local controller in the ship serves as a Domain controller in the OXP. The OXP protocol is transmitted based on a TCP protocol, when the local controller and the super controller are connected, the local controller and the super controller determine the used OXP protocol version through a Hello message, and then the super controller issues a Features _ request message to request the local controller to report the network (i.e. the abstracted logic switch) characteristics of the local controller. After the link is established, the super controller and the local controller need to confirm mutual keep-alive through Echo messages, and the Echo messages can be used for calculating communication delay of the control link. The OXP also provides other messages with functions of cross-domain routing planning, local controller state setting and the like, and the main messages and the functions of the OXP protocol are shown in the following table:
the method optimizes the content and the opportunity of the protocol communication message according to the special ship condition on the sea on the basis of the OXP protocol, so that the method is more suitable for the complex communication environment of a multi-stage controller system on the sea.
In some embodiments, a storage medium is further provided, wherein the storage medium stores one or more programs, and the one or more programs are executed by one or more processors to realize the steps of the maritime communication multi-stage control method.
In summary, the super controller of the present invention can perform overall control of marine communication after receiving the network topology information reported by the local controller, so as to guide the selection of the egress channels of each ship, thereby eliminating the channel selection blind area caused by unstable bandwidth and time delay.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (8)
1. A marine communication multi-stage control method is applied to a marine communication multi-stage control system, the marine communication multi-stage control system comprises local controllers arranged inside different ships and a shore-based super controller, and the marine communication multi-stage control method is characterized by comprising the following steps:
the super controller receives network topology information reported by the local controller;
the super controller draws a global network topology in a control center according to the acquired network topology information;
the super controller performs communication guidance on the local controller by adopting a mode of issuing a guidance message to the local controller;
the step of receiving, by the super controller, the network topology information reported by the local controller includes: the local controller controls the flow in the ship domain and collects network topology information; the local controller dynamically selects the network topology information according to the strength of an intra-domain channel, and reports the dynamically selected network topology information to the super controller after filtering and compressing the dynamically selected network topology information; and the super controller receives the network topology information reported by the local controller.
2. The maritime communication multi-level control method according to claim 1, wherein the step of the super controller receiving the network topology information reported by the local controller includes:
the local controller controls the flow in the ship domain, collects network topology information and performs priority sequencing on the content in the network topology information;
when the local controller is limited in the intra-domain channel, filtering and compressing the network topology information according to the priority sequence and then sequentially reporting the network topology information to the super controller;
and the super controller receives the network topology information reported by the local controller.
3. The maritime communication multi-level control method according to any one of claims 1-2, wherein the network topology information includes device on-line information, link stability status, security status, administrator status, network element operating rate, and egress channel information.
4. The maritime communication multi-level control method according to claim 1, wherein the guidance messages include routing information and egress channel selection information.
5. The maritime communication multi-stage control method according to claim 1, wherein the super controller and the local controller establish an OXP protocol.
6. A storage medium, wherein the storage medium stores one or more programs, and wherein the one or more programs are executed by one or more processors to implement the steps of the maritime communication multi-level control method of any one of claims 1-5.
7. A maritime communication multi-stage control system, comprising local controllers arranged inside different ships and a shore-based super controller, wherein the super controller is used for executing the steps of the maritime communication multi-stage control method according to any one of claims 1 to 5.
8. The offshore communication multi-stage control system of claim 7, wherein the super controller is communicatively connected to a control center, and the local controller is communicatively connected to an SDN network inside the ship.
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