CN114614917A - Wireless communication link simulation system and method - Google Patents
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Abstract
The invention discloses a wireless communication link simulation system and a wireless communication link simulation method, and belongs to the field of communication simulation. The system comprises flight management data processing equipment, a communication data exchange device and a communication simulation control terminal, wherein all the components are communicated and interconnected based on the Ethernet, and data forwarding and link parameter control are carried out on short-wave and ultra-short-wave communication links between an accessed flight management terminal and an aircraft simulator, so that analog simulation of wireless communication links between multiple access terminals is realized. The invention can be used for analog simulation of various wireless communication links, and can simulate and construct a realistic wireless communication network environment with lower cost.
Description
Technical Field
The invention relates to the field of communication analog simulation, in particular to a wireless communication link simulation system and a wireless communication link simulation method.
Background
More and more electronic devices are widely applied to the field of military and civil, which causes great electromagnetic influence on the air flight of aircrafts. How to carry out airplane piloting and flight management under complex electromagnetic environment and severe communication conditions becomes a difficult problem. The traditional solution is to set up a physical test environment close to a real scene, continuously perform flight management and flight training in the environment, and form a flight management and operation control mechanism for dealing with various conditions for real flight. But this requires the deployment of a large amount of network infrastructure (including real aircraft, multiple ground wireless communication sites, wired networks, switches, etc.) to build the communication link of the flight management terminal to the aerial vehicle. The method has the defects of high cost, immature technology, long time period and the like, and in addition, the risk of leaking key communication parameters such as frequency and time sequence exists during physical tests. Therefore, the communication test environment for testing the fidelity is provided under the laboratory condition, and the method has important theoretical significance and practical value.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a wireless communication link simulation system and a wireless communication link simulation method, which can realize large-scale wireless communication network simulation from a flight management terminal to an airplane simulator in an Ethernet environment and greatly save expensive expenses required by an aviation communication network test.
The technical scheme is as follows: in a first aspect, there is provided a wireless communication link simulation system comprising a flight management data processing device, a communication data exchange means, and a communication simulation control terminal, wherein,
the flight management data processing equipment converts flight management information from a flight management terminal into an instruction which can be identified by an airplane simulator according to a specified communication protocol standard, forwards the instruction to the airplane simulator through the communication simulation control terminal, converts information returned by the airplane simulator according to the standard of the flight management terminal, and sends the information to the flight management terminal;
the communication simulation control terminal calculates the transmission characteristic of the wireless communication link based on the given wireless communication link parameter, and controls the flow of the forwarded data based on the transmission characteristic of the wireless communication link;
the communication data exchange device provides a plurality of network access ports for the communication simulation control terminal, the flight management data processing equipment and the airplane simulator, and network interconnection between the flight management terminal and the airplane simulator is realized.
In a second aspect, a method for simulating a wireless communication link, based on the system of the first aspect, includes the following steps:
(1) the flight management data processing equipment receives flight management information from a flight management terminal, converts the flight management information into an instruction which can be identified by an airplane simulator according to a specified communication protocol standard, and sends the instruction to a communication simulation control terminal;
(2) the communication simulation control terminal calculates the time delay and bandwidth control parameters of the wireless communication link based on the given wireless communication link parameters, and controls the flow of the forwarded data based on the corresponding time delay and bandwidth control parameters;
(3) the aircraft simulator receives the instruction information after the flow control, guides a flight driver to carry out flight training in the communication environment, and transmits the position of the aircraft simulator in a flight platform and platform state information back to the flight management terminal through the communication simulation control terminal;
(4) the communication simulation control terminal controls the flow of the forwarded data based on the corresponding time delay and bandwidth control parameters, and monitors the communication time delay and bandwidth data in the network.
Has the beneficial effects that: the wireless communication link simulation system and method provided by the invention realize wireless communication simulation of the communication link between the flight management terminal and the airplane simulator, and provide a new means for aircraft flight management and flight training in different network communication environments (especially in a communication interference state). The invention can greatly reduce the expensive expenses required by the aviation communication network test.
Drawings
FIG. 1 is a schematic diagram of a wireless communication link simulation system usage scenario according to an embodiment of the present invention;
FIG. 2 is a block diagram of a wireless communication link simulation system according to an embodiment of the present invention;
FIG. 3 is a functional component diagram of a flight management data processing apparatus according to an embodiment of the present invention;
FIG. 4 is a flow diagram of flight management data processing device business processing according to an embodiment of the present invention;
fig. 5 is a functional block diagram of a communication data exchange apparatus according to an embodiment of the present invention;
fig. 6 is a functional composition diagram of a communication simulation control terminal according to an embodiment of the present invention;
fig. 7 is a flow chart of a wireless communication link simulation system use according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings.
Referring to fig. 1 and 2, a wireless communication link simulation system includes a flight management data processing device, a communication data exchange device, and a communication simulation control terminal, where the devices or devices are in communication connection according to a network topology shown in fig. 1, the flight management data processing device and the communication simulation control terminal are both connected to the communication data exchange device, an external access device of the system includes a plurality of flight management terminals and an aircraft simulator, the flight management terminals are connected to the flight management data processing device, and the aircraft simulator is connected to the communication data exchange device. Based on the wireless communication link simulation system, the simulation of the transmission characteristics of the wireless communication link between the flight management terminal and the airplane simulator can be realized. It should be understood that the two flight management terminals and the two aircraft simulators of the access system shown in fig. 1 are only for illustrative purposes, and are not limited to the number of terminals, and the system supports one-to-one (i.e., one flight management terminal and one aircraft simulator), one-to-many (i.e., one flight management terminal and a plurality of aircraft simulators), and many-to-many (i.e., a plurality of flight management terminals and a plurality of aircraft simulators) simulation of wireless communication transmission characteristics between the terminals.
Generally, the flight management data processing device is used for converting flight management information of a flight management operator into an instruction which can be identified by the aircraft simulator according to a standard communication protocol standard, and forwarding the instruction to the aircraft simulator through the communication simulation control terminal to realize dynamic real-time communication of the aircraft simulator. And meanwhile, the position information and the platform state information of the aircraft simulator on the flight platform can be received and visually displayed.
And the communication data exchange device provides a plurality of network access ports for the communication simulation control terminal, the flight management data processing equipment and the airplane simulator, and realizes network interconnection between the flight management data processing equipment and the airplane simulator.
And the communication simulation control terminal calculates the time delay and bandwidth transmission characteristics of the wireless communication link according to the wireless communication link parameters input by the user, and realizes the time delay and bandwidth control of the data transmitted in the network through the flow control command.
The flight management terminal provides flight management aid decision and data instruction sending, can send flight route and common message and telegram information to the flight simulator, and can receive position and state information of the aircraft simulator and visually display the position and state information.
And the airplane simulator receives the flight management information after the flow control, and guides a flight driver to carry out flight training in the communication environment. And meanwhile, the position of the aircraft simulator in the flight platform and the platform state information are transmitted back to the flight management terminal.
In the embodiment of the invention, the flight management terminals and the flight management data processing devices are in one-to-one correspondence, that is, for each flight management terminal, one flight management data processing device is correspondingly provided for data processing and forwarding. The flight management terminal and the flight management data processing device can be connected through a serial port for data transmission.
Referring to fig. 3, the flight management data processing apparatus includes a flight management information receiving module, a flight management information processing module, and a flight management information forwarding module. And the flight management information receiving module receives communication data of the flight management terminal and the airplane simulator. The flight management information processing module judges the information type of the received data and carries out corresponding format coding and decoding conversion according to the message protocol. And the flight management information forwarding module forwards the data to the specified terminal according to the message destination address.
The flow of the service processing of the flight management data processing device is shown in fig. 4. Referring to fig. 4, the flight management information reception module performs information reception and filtering classification on the received information in a listening mode, that is, receives only a specific type of information. In the embodiment of the invention, a FLAG bit FLAG _ SR carried by a MESSAGE is used for distinguishing whether the MESSAGE is a Sending (SEND) MESSAGE or a Receiving (RECEIVE) MESSAGE, and FLAG _ SR = MESSAGE _ SEND =0 indicates that the MESSAGE is information sent by a flight management terminal and needs to be coded and sent; FLAG _ SR = MESSAGE _ RECV =1, which indicates that the MESSAGE is flight management terminal recovery information, that is, information returned by the aircraft simulator and needs to be decoded and recovered; otherwise, the message is filtered.
And the flight management information processing module further processes the information according to the type of the received message. In the embodiment of the invention, the specific information types are distinguished according to the identifier FMSG _ PROC, the information type is judged for the information sent by the flight management terminal, FMSG _ PROC =0 and FMSG _ PROC =1 respectively represent airline information and text-electricity information, the flight management information processing module assembles a message main body according to a standard interface of an airplane simulator and adds a message header, and the complete message is coded; for the information returned by the aircraft simulator, firstly, the message is decoded, then the information type is judged, FMSG _ PROC =2 and FMSG _ PROC =3 respectively represent the position of the aircraft simulator in the flight platform and the platform state information, and the flight management information processing module assembles a message main body according to a standard interface of the flight management terminal and adds a message header.
And the flight management information forwarding module calls a standard message forwarding interface to forward the message to a terminal with a specified IP address.
It should be understood that the setting of the flag bit or the setting of the identifier code for the message type in the service processing flow of the flight management data processing device described in conjunction with fig. 4 is only for illustrative and exemplary purposes, and is intended to facilitate understanding of the technical solutions by those skilled in the art, and is not intended to limit the invention.
Referring to fig. 5, the communication data exchange device includes a data forwarding module and an address management module, and is capable of implementing network interconnection and data information forwarding of the flight management data processing device, the communication simulation control terminal and the aircraft simulator.
In the embodiment of the invention, the communication data switching device is essentially a switch which is divided into two VLANs, and two connection ports are provided for the dual network card of the communication analog control terminal, so that the communication flow between the two ports is controlled. Referring to the function of the switch, the address management is to perform MAC address and port mapping relation management on the terminal accessed to the switch, which is convenient for data communication. And the data forwarding realizes the data transmission of the VLAN1 port and the VLAN2 port connected with the communication analog control terminal. With reference to fig. 1, the communication data exchange device is provided with two VLANs, and each VLAN provides a plurality of network access ports, wherein a port below the VLAN1 is connected to the flight management data processing device, and a port below the VLAN2 is connected to the aircraft simulator. The communication analog control terminal is provided with double network cards, one network port is accessed to a VLAN1 port of the communication data exchange device through a network cable, and the other network port is accessed to a VLAN2 port through the network cable. After the two VLANs are divided, the communication between the aircraft simulator and the flight management terminal needs to be simulated through the communication simulation control terminal, and then the data flow control can be realized. The communication between two ports of different VLANs can only be realized through the communication simulation control terminal, the information at one end is received through the IP address of one network port in the double network cards of the communication simulation control terminal, and the data is sent to the other end through the IP address of the other network port. For example, data of the flight management terminal is returned from the aircraft simulator, the aircraft simulator transmits the data to the IP1 of the communication simulation control terminal via the communication data exchange device, the communication simulation control terminal receives the data and transmits the data to the IP2 of the aircraft simulator, and the IP2 of the aircraft simulator transmits the data to the flight management data processing device.
The communication simulation control terminal carries out simulation on the coding, modulation and channel transmission processes of the wireless communication link based on the input wireless communication link parameters, and loads the time delay and bandwidth transmission characteristic data obtained by simulation to the communication link through the flow control command, so as to realize the flow control of the communication link. As shown in fig. 6, the communication simulation control terminal includes a data routing forwarding configuration module, a wireless communication parameter configuration module, a communication link flow calculation module, a communication link flow control module, and a system status monitoring module. The data routing forwarding configuration module provides an interface for carrying out parameter configuration on the IP address of the flight management data processing equipment for receiving and sending messages and the IP address of the airplane simulator; the wireless communication parameter configuration module provides an interface for a user to input wireless communication parameters including a transmission distance, a protocol type, a coding modulation parameter and a channel propagation parameter; the communication link flow calculation module calculates the flow parameters such as communication time delay, bandwidth and the like according to the wireless communication parameters input by the user; the conditions of communication delay and interruption caused by severe communication conditions can be simulated through the wireless communication parameter configuration module and the communication link flow calculation module, so that a communication training environment under the severe conditions is provided for pilots. The communication simulation control terminal is also provided with a starting button, when the IP address is configured and the parameters are obtained through calculation, the starting button can be clicked to start simulation, at the moment, a communication link from the VLAN1 to the VLAN2 is established, and the communication link flow control module controls the data flow of the communication link through a flow control command; the system state monitoring module carries out visual monitoring on each system IP, network card information, communication link connection state, link transmission characteristics (time delay, bandwidth and the like) and the like so as to process abnormal conditions in time. Here, the monitored system IP refers to an aircraft simulator IP and an IP of the flight management data processing device provided by the communication simulation control terminal, and may have one or more links.
Fig. 7 shows a usage flow of the wireless communication link simulation system, which includes the following steps:
step 1: and the flight management terminal participating in the wireless communication simulation is accessed into the flight management data processing equipment, and the aircraft simulator participating in the wireless communication simulation is accessed into the communication data exchange device.
Step 2: configuring a flight management data processing terminal IP address and an airplane simulator IP address for receiving and sending messages at a communication simulation control terminal;
and step 3: configuring wireless communication link parameters including transmission distance, protocol type, coding modulation parameters and channel propagation parameters at a communication simulation control terminal, calculating to obtain corresponding time delay and bandwidth control parameters, and controlling network communication flow;
and 4, step 4: the flight route and the common telegraph information are sent from the flight management terminal, the information is processed by the flight management data processing equipment and then forwarded to the communication simulation control terminal, then forwarded to the communication data exchange device by the communication simulation control terminal, and forwarded to the airplane simulator by the communication data exchange device, so that the received information can be synchronously checked in the airplane simulator, and communication delay and bandwidth data in a network are monitored at the communication simulation control terminal.
And 5: the self-position information and the platform state information are sent from the airplane simulator, the information is forwarded to the communication simulation control terminal through the communication data exchange device, the communication simulation control terminal carries out flow control on data and then sends the data to the flight management data processing device, the flight management data processing device carries out processing according to the flight management standard and then sends the data to the flight management terminal, the received information can be synchronously checked at the flight management terminal, and the communication delay and bandwidth data in a network are monitored at the communication simulation control terminal.
Based on the wireless communication link simulation system, the working process comprises the following steps:
(1) the flight management data processing equipment receives flight management information from the flight management terminal, converts the flight management information into an instruction which can be identified by the airplane simulator according to a specified communication protocol standard, and sends the instruction to the communication simulation control terminal; the flight management information comprises flight routes and common telegraph information;
(2) the communication simulation control terminal calculates the time delay and bandwidth control parameters of the wireless communication link based on the given wireless communication link parameters, and controls the flow of the forwarded data based on the corresponding time delay and bandwidth control parameters;
(3) the aircraft simulator receives the instruction information after the flow control, guides a flight driver to carry out flight training in the communication environment, and transmits the position of the aircraft simulator in a flight platform and platform state information back to the flight management terminal through the communication simulation control terminal;
(4) the communication simulation control terminal controls the flow of the forwarded data based on the corresponding time delay and bandwidth control parameters, and monitors the communication time delay and bandwidth data in the network.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A wireless communication link simulation system is characterized by comprising a flight management data processing device, a communication data exchange device and a communication simulation control terminal, wherein,
the flight management data processing equipment converts flight management information from a flight management terminal into an instruction which can be identified by an airplane simulator according to a specified communication protocol standard, forwards the instruction to the airplane simulator through the communication simulation control terminal, converts information returned by the airplane simulator according to the standard of the flight management terminal, and sends the information to the flight management terminal;
the communication simulation control terminal calculates the transmission characteristic of the wireless communication link based on the given wireless communication link parameter, and controls the flow of the forwarded data based on the transmission characteristic of the wireless communication link;
the communication data exchange device provides a plurality of network access ports for the communication simulation control terminal, the flight management data processing equipment and the airplane simulator, and network interconnection between the flight management terminal and the airplane simulator is realized.
2. The system of claim 1, wherein the flight management information from the flight management terminal includes flight route information and text-to-electricity information, the information returned by the aircraft simulator includes position information and platform status information of the aircraft simulator in the flight platform, and the communication protocol standard includes short-wave and ultra-short-wave communications.
3. The wireless communication link simulation system according to claim 1, wherein the flight management data processing device includes a flight management information receiving module, a flight management information processing module, and a flight management information forwarding module, wherein the flight management information receiving module receives communication data of the flight management terminal and the aircraft simulator; the flight management information processing module judges the information type of the received data and carries out corresponding format coding and decoding conversion according to the message protocol; and the flight management information forwarding module forwards the data to the specified terminal according to the message destination address.
4. The wireless communication link simulation system according to claim 3, wherein the flight management information receiving module distinguishes the MESSAGE type by a FLAG _ SR carried in the MESSAGE packet, FLAG _ SR = MESSAGE _ SEND =0 indicates that the MESSAGE is information sent by the flight management terminal and needs to be coded and sent; FLAG _ SR = MESSAGE _ RECV =1 indicates that the MESSAGE is flight management terminal recovery information and needs to be decoded and recovered; otherwise, the message is filtered.
5. The wireless communication link simulation system according to claim 3, wherein the flight management information processing module distinguishes the specific information type according to the identifier FMSG _ PROC, for the information sent by the flight management terminal, firstly, the information type is judged, FMSG _ PROC =0 and FMSG _ PROC =1 respectively represent airline information and text-electricity information, the flight management information processing module assembles a message body according to a standard interface of the aircraft simulator, adds a message header, and encodes the complete message; for the information returned by the aircraft simulator, firstly, the message is decoded, then the information type is judged, FMSG _ PROC =2 and FMSG _ PROC =3 respectively represent the position of the aircraft simulator in the flight platform and the platform state information, and the flight management information processing module assembles a message main body according to a standard interface of the flight management terminal and adds a message header.
6. The system of claim 1, wherein the communication simulation control terminal calculating the transmission characteristics of the wireless communication link based on the given wireless communication link parameters comprises: and the communication simulation control terminal calculates and obtains corresponding time delay and bandwidth control parameters based on the transmission distance, the protocol type, the coding modulation parameters and the channel propagation parameters input by the user.
7. The wireless communication link simulation system according to claim 1, wherein the communication simulation control terminal comprises a data routing forwarding configuration module, a wireless communication parameter configuration module, a communication link flow calculation module and a communication link flow control module, wherein the data routing forwarding configuration module provides an interface for parameter configuration of an IP address of the flight management terminal and an IP address of the airplane simulator for transmitting and receiving messages; the wireless communication parameter configuration module provides an interface for a user to input wireless communication parameters; the communication link flow calculation module calculates communication time delay and bandwidth parameters according to wireless communication parameters input by a user; and the communication link flow control module controls the data flow of the communication link through the flow control command.
8. The wireless communication link simulation system according to claim 1, wherein two VLANs are provided in the communication data exchange device, and a plurality of network access ports are provided in each VLAN, wherein a port under VLAN1 is connected to the flight management data processing device, and a port under VLAN2 is connected to the aircraft simulator.
9. The wireless communication link simulation system according to claim 8, wherein the communication simulation control terminal is configured with dual network cards, one network card interface accessing the VLAN1 port of the communication data switching device through a network cable, and the other network card interface accessing the VLAN2 port of the communication data switching device through a network cable.
10. A method for simulating a wireless communication link according to any one of claims 1 to 9, comprising the steps of:
(1) the flight management data processing equipment receives flight management information from a flight management terminal, converts the flight management information into an instruction which can be identified by an airplane simulator according to a specified communication protocol standard, and sends the instruction to a communication simulation control terminal;
(2) the communication simulation control terminal calculates the time delay and bandwidth control parameters of the wireless communication link based on the given wireless communication link parameters, and controls the flow of the forwarded data based on the corresponding time delay and bandwidth control parameters;
(3) the aircraft simulator receives the instruction information after the flow control, guides a flight driver to carry out flight training in the communication environment, and transmits the position of the aircraft simulator in a flight platform and platform state information back to the flight management terminal through the communication simulation control terminal;
(4) the communication simulation control terminal controls the flow of the forwarded data based on the corresponding time delay and bandwidth control parameters, and monitors the communication time delay and bandwidth data in the network.
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| CN113965470A (en) * | 2021-09-30 | 2022-01-21 | 中国人民解放军空军工程大学 | Aviation information network experiment simulation system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115550244A (en) * | 2022-09-21 | 2022-12-30 | 中国电子科技集团公司第二十八研究所 | Method for forwarding instruction messages among multiple data chains |
| CN115550244B (en) * | 2022-09-21 | 2023-11-17 | 中国电子科技集团公司第二十八研究所 | Method for forwarding instruction message among multiple data chains |
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