CN110493040A - The design method and device of airborne network - Google Patents
The design method and device of airborne network Download PDFInfo
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- CN110493040A CN110493040A CN201910715016.3A CN201910715016A CN110493040A CN 110493040 A CN110493040 A CN 110493040A CN 201910715016 A CN201910715016 A CN 201910715016A CN 110493040 A CN110493040 A CN 110493040A
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- interchanger
- network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0896—Bandwidth or capacity management, i.e. automatically increasing or decreasing capacities
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Health & Medical Sciences (AREA)
- Computing Systems (AREA)
- General Health & Medical Sciences (AREA)
- Medical Informatics (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention provides the design method and device of a kind of airborne network, comprising: calculates the bandwidth demand of each network terminal in airborne network；According to interchanger ability and network terminal quantity, interchanger number is determined；According to the bandwidth demand of each network terminal, the connection relationship of interchanger and the network terminal is established.The design method and device of airborne network provided by the invention, are designed airborne network, are able to satisfy the requirement of performance and safety.The present invention is allocated switch communication resource, and calculating process is simple, it is easy to accomplish, there is stronger practical value.
Description
Technical field
The present invention relates to air communications fields, and in particular to a kind of design method and device of airborne network.
Background technique
Airborne network is the basis of avlomcs system integration, and high security airborne network will not only meet
The needs of communication function performance, while to meet safety needs, guarantee the real-time communication of critical data.
The design method of traditional airborne network designs airborne network using trial-and-error method, in analysis communicativeness
It is able to satisfy when needing, safety in utilization analysis method verifies the safety of network system.This method leads to safety issue not
It can be timely fed back in Design of Network System, Iterative Design heavy workload.
Summary of the invention
The embodiment of the present invention provides the design method and device of a kind of airborne network, and calculating process is simple, is easy to real
It is existing, there is stronger practical value.
First aspect of the embodiment of the present invention provides a kind of design method of airborne network, comprising:
Calculate the bandwidth demand of each network terminal in airborne network；
According to interchanger ability and network terminal quantity, interchanger number is determined；
According to the bandwidth demand of each network terminal, the connection relationship of interchanger and the network terminal is established.
In a kind of feasible implementation, the bandwidth demand according to each network terminal, establishes interchanger and network is whole
The connection relationship at end, comprising:
Establish network terminal queue Line1 and switch queue Line2；According to the transmission of all-network terminal in Line1
The inromation bandwidth BandSafety of high safety grade sorts from high to low, and the network terminal identical for BandSafety is according to logical
Letter bandwidth demand sorts from high to low, and all interchangers containing vacant port are arranged according to available communication remaining bandwidth in Line2
Sequence BandwidthLeft sorts from high to low；
The friendship with sequence first in Line2 is configured by the network terminal for the sequence first that interchanger is not configured in Line1
It changes planes connection, and resequences to Line2；Until all-network terminal is each equipped with interchanger in Line1.
In a kind of feasible implementation, each interchanger connects two-by-two, and the design method of airborne network is also wrapped
It includes:
Whether the traffic load for calculating all of the port of each interchanger has been more than port communication ability；
If the port of interchanger connecting with the network terminal has been more than port communication ability, alarm letter is issued the user with
Breath, the input and output for the network terminal that the port that the warning information was used to indicate and had been more than port communication ability connects
It carries；
It is being more than port communication energy if the port of interchanger connecting with interchanger has been more than port communication ability
Increase cable between two interchangers of the port connection of power.
In a kind of feasible implementation, if the port of interchanger connecting with interchanger has been more than port communication energy
Power, and without available port between two interchangers of port connection for being more than port communication ability, airborne network
Design method further include:
Interchanger number is added 1；
Interchanger number according to the bandwidth demand of each network terminal and after adding 1, establishes the company of interchanger and the network terminal
Connect relationship.
In a kind of feasible implementation, when the source network terminal and the purpose network terminal of the message in airborne network
It is connected on an interchanger, the message is transferred through the friendship that the source network terminal of the message is connected with the purpose network terminal
It changes planes；
When the source network terminal and the purpose network terminal of the message in airborne network are connected on different interchangers, institute
State the interchanger that message is transferred through the source network terminal of message and the purpose network terminal respectively connects.
In a kind of feasible implementation, the design method of airborne network further include:
According to tree structure, all message are verified using network calculus to all message in airborne network and meet peace
Full property demand.
In a kind of feasible implementation, exists in all message in airborne network and do not meet security requirement
Message when, the design method of airborne network further include:
Interchanger number is added 1；
Interchanger number according to the bandwidth demand of each network terminal and after adding 1, establishes the company of interchanger and the network terminal
Connect relationship.
Second aspect of the embodiment of the present invention provides a kind of design device of airborne network, for executing above-mentioned first party
The design method of airborne network in face has the same or similar technical characteristic and technical effect.
The design device of airborne network provided in an embodiment of the present invention, comprising: demand acquisition module and onboard networks
Design module；Wherein,
Demand acquisition module, for acquiring performance requirement and security requirement of the airborne network to network communication；
Onboard networks design module, for according to network communication performance requirement and security requirement, determine interchanger
Quantity and connection type.
In a kind of feasible implementation, the design device of airborne network further include:
Network performance analysis module, for disappearing to all message in airborne network using network calculus verifying is all
Breath meets security requirement；
The onboard networks design module is also used to, when there is the message for not meeting security requirement, by interchanger
Number plus 1；
Interchanger number according to the bandwidth demand of each network terminal and after adding 1, establishes the company of interchanger and the network terminal
Connect relationship.
In a kind of feasible implementation, onboard networks design module includes:
Interchanger quantity calculating submodule, for according to communication requirement and interchanger capacity calculation interchanger minimum quantity；
Message stream configuration submodule, for according to security constraint using greedy method by message stream configuration on switches.
The design method and device of airborne network provided by the invention, are designed airborne network, can be full
The requirement of sufficient performance and safety.The present invention is allocated switch communication resource, and calculating process is simple, it is easy to accomplish, tool
There is stronger practical value.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart for the airborne network design method that one embodiment of the invention provides；
Fig. 2 is the functional block diagram for the airborne network design method that one embodiment of the invention provides；
Fig. 3 is the functional block diagram that the onboard networks that one embodiment of the invention provides design module.
Specific embodiment
Fig. 1 is the flow chart for the airborne network design method that one embodiment of the invention provides, and Fig. 2 is that the present invention one is real
The functional block diagram of the airborne network design method of example offer is provided.As depicted in figs. 1 and 2, high security airborne net
The design method of network may include three modules: demand acquisition module, performance requirement number of the acquisition onboard networks to network communication
According to and security requirement；Onboard networks design module, determine interchanger to performance and the demand of safety according to network communication
Quantity and connection type；Network performance analysis module calculates message delay with network calculus method to guarantee safety.
Fig. 3 is the functional block diagram that the onboard networks that one embodiment of the invention provides design module, as shown in figure 3, airborne
Network design module includes two submodules: interchanger quantity calculating submodule, according to communication requirement and interchanger ability meter
Calculate interchanger minimum quantity；Message stream configuration submodule is being handed over message stream configuration using greedy method according to security constraint
On changing planes.
Referring to Fig.1, the design method of high security airborne network can be made of following six step:
(1) onboard networks communication performance and security requirement analysis, calculate the bandwidth demand of all-network terminal.
Illustratively, summarize the communication requirement of all-network terminal.
Such as by taking core network is avionic full-duplex switched-type Ethernet (AFDX) as an example, then only need active according to institute
Frame length and frame gap (BAG) information of terminal, can calculate the respective bandwidth demand of all-network terminal.Airborne net
The network terminal in network can be source terminal, or purpose terminal can also both be source terminal, also be purpose terminal.
The mode that bandwidth calculation can be used in the communication requirement of the network terminal obtains, as shown by the following formula:
N is the message total quantity that the network terminal is sent in formula, and 20 indicate the interval in AFDX network between two frames.Separately
Outside, the communication requirement of high safety grade in Band is defined as BandSafety.
(2) according to interchanger ability and network terminal quantity, interchanger number range is determined.
Onboard networks do not consider that single information is transferred through three interchangers, and consider that interchanger is mutual two-by-two in single net
Connection, then can list inequation and obtain the number of interchanger.
If exchange interface number is M in single net, network terminal number is N, and interchanger number is X, then has following result:
[M-(X-1)]×X-N≥0
The quadratic equation with one unknown can be calculated to calculate the minimum number (attention rounds up) of interchanger needs and allow
Maximum number (pay attention to be rounded downwards), as the section of interchanger number, default uses minimum number.
(3) interchanger of load balancing and the connection relationship of the network terminal are quickly established using greedy method, dispatch network is whole
Hold interchanger.
In order to reduce the communication pressure of interchanger, keep switch load balanced, using greedy method by communication terminal with friendship
It changes planes connection.
Firstly, interchanger is interconnected, and by all-network terminal according to the inromation bandwidth for sending high safety grade
BandSafety sequence, obtains network terminal queue Line1 from high to low；
Secondly, setting the communication capacity of interchanger single port as Bandwidth, while it is surplus to set the available communication of all interchangers
Remaining bandwidth is BandwidthLeft, and initial value is equal to Bandwidth, equally by all interchangers containing vacant port
It sorts according to available communication remaining bandwidth, obtains switch queue Line2 from high to low；
Then, the highest terminal of inromation bandwidth BandSafety demand of high safety grade will be taken out in queue Line1, so
It afterwards sets the terminal to first interchanger of connection queue Line2, while resequencing to Line2；Hereafter, continue to take
Terminal and it is dispatched to the terminal in Line2 in Line1, until the terminal quilt of all inromation bandwidth demands with high safety grade
It takes；
Finally, being equally assigned in Line2 one by one to other terminals in Line1 according to communication bandwidth requirements minor sort again
The highest interchanger of remaining bandwidth is communicated, is finished until assigning.
(4) interchanger connected according to message source and destination terminal determines the most short transmission path of onboard networks message.
After communication terminal and interchanger determine connection type, according to the source and destination address of message, the biography of message is determined
Defeated path.
It only include the exchange in message path if message source terminal and purpose terminal are connected to the same interchanger
Machine includes source terminal and the exchange that purpose terminal respectively connects in message path if not the same interchanger is connected
Machine.
(5) verifying network design meets communication capacity constraint.
Whether the traffic load for calculating interchanger all of the port has been more than port communication ability, if connect with device end
Port be more than communication capacity, then illustrate the device end input and output overload, need to device end communication requirement again
Design.Illustratively, warning information is issued the user with, the port that warning information was used to indicate and had been more than port communication ability connects
The input and output of the network terminal connect are overloaded.If the port overload connecting with interchanger, considers between two interchangers
Increase cable to enhance communication capacity.Such as without extra available port, then increase interchanger, redefines exchange network.
(6) according to tree structure, use network calculus analysis delay with security verified demand accordance all message.
It illustratively, only include 1 or 2 interchangers, nothing in message pathway in all message pathways in exchange network
Ring then can calculate one by one the maximum delay of message, it is ensured that message meets security requirement in network according to tree network.
Claims (10)
1. a kind of design method of airborne network characterized by comprising
Calculate the bandwidth demand of each network terminal in airborne network；
According to interchanger ability and network terminal quantity, interchanger number is determined；
According to the bandwidth demand of each network terminal, the connection relationship of interchanger and the network terminal is established.
2. the method according to claim 1, wherein the bandwidth demand according to each network terminal, establishes and hands over
The connection relationship changed planes with the network terminal, comprising:
Establish network terminal queue Line1 and switch queue Line2；According to the transmission Gao An of all-network terminal in Line1
The inromation bandwidth BandSafety of congruent grade sorts from high to low, and the network terminal identical for BandSafety is according to communication band
Wide demand sorts from high to low, and all interchangers containing vacant port sort according to available communication remaining bandwidth in Line2
BandwidthLeft sorts from high to low；
The interchanger with sequence first in Line2 is configured by the network terminal for the sequence first that interchanger is not configured in Line1
Connection, and resequence to Line2；Until all-network terminal is each equipped with interchanger in Line1.
3. the method according to claim 1, wherein each interchanger connects two-by-two, the method also includes:
Whether the traffic load for calculating all of the port of each interchanger has been more than port communication ability；
If the port of interchanger connecting with the network terminal has been more than port communication ability, warning information is issued the user with,
The input and output for the network terminal that the port that the warning information was used to indicate and had been more than port communication ability connects are overloaded；
It is being more than port communication ability if the port of interchanger connecting with interchanger has been more than port communication ability
Increase cable between two interchangers of port connection.
4. according to the method described in claim 3, it is characterized in that, if the port of interchanger connecting with interchanger is more than
Port communication ability, and without available port between two interchangers of port connection for being more than port communication ability, it is described
Method further include:
Interchanger number is added 1；
Interchanger number according to the bandwidth demand of each network terminal and after adding 1, the connection for establishing interchanger and the network terminal are closed
System.
5. according to the method for claim 3 or 4, which is characterized in that when the message in airborne network source network terminal and
The purpose network terminal is connected on an interchanger, and the message is transferred through the source network terminal and purpose network of the message
The interchanger of terminal connection；
It is described to disappear when the source network terminal and the purpose network terminal of the message in airborne network are connected on different interchangers
The interchanger that breath is transferred through the source network terminal of message and the purpose network terminal respectively connects.
6. according to the method described in claim 5, it is characterized in that, the method also includes:
According to tree structure, all message are verified using network calculus to all message in airborne network and meet safety
Demand.
7. according to the method described in claim 6, not being inconsistent it is characterized in that, existing in all message in airborne network
When closing the message of security requirement, the method also includes:
Interchanger number is added 1；
Interchanger number according to the bandwidth demand of each network terminal and after adding 1, the connection for establishing interchanger and the network terminal are closed
System.
8. a kind of design device of airborne network characterized by comprising demand acquisition module and onboard networks design mould
Block；Wherein,
Demand acquisition module, for acquiring performance requirement and security requirement of the airborne network to network communication；
Onboard networks design module, for according to network communication performance requirement and security requirement, determine the quantity of interchanger
And connection type.
9. device according to claim 8, which is characterized in that further include:
Network performance analysis module is accorded with for verifying all message using network calculus to all message in airborne network
Close security requirement；
The onboard networks design module is also used to, and when there is the message for not meeting security requirement, interchanger number is added
1；
Interchanger number according to the bandwidth demand of each network terminal and after adding 1, the connection for establishing interchanger and the network terminal are closed
System.
10. device according to claim 8 or claim 9, which is characterized in that onboard networks design module and include:
Interchanger quantity calculating submodule, for according to communication requirement and interchanger capacity calculation interchanger minimum quantity；
Message stream configuration submodule, for according to security constraint using greedy method by message stream configuration on switches.
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| CN201910715016.3A CN110493040B (en) | 2019-08-02 | 2019-08-02 | Design method and device of airborne network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111800300A (en) * | 2020-07-08 | 2020-10-20 | 中国商用飞机有限责任公司 | Method and device for setting topology of airplane data network |
| CN112671627A (en) * | 2020-12-29 | 2021-04-16 | 中国航空工业集团公司西安飞机设计研究所 | Systematic bus model selection method and device for airborne flight control system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111800300A (en) * | 2020-07-08 | 2020-10-20 | 中国商用飞机有限责任公司 | Method and device for setting topology of airplane data network |
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| CN112671627A (en) * | 2020-12-29 | 2021-04-16 | 中国航空工业集团公司西安飞机设计研究所 | Systematic bus model selection method and device for airborne flight control system |
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