CN114614917B - Wireless communication link simulation system and method - Google Patents
Wireless communication link simulation system and method Download PDFInfo
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- CN114614917B CN114614917B CN202210381596.9A CN202210381596A CN114614917B CN 114614917 B CN114614917 B CN 114614917B CN 202210381596 A CN202210381596 A CN 202210381596A CN 114614917 B CN114614917 B CN 114614917B
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- 238000004891 communication Methods 0.000 title claims abstract description 194
- 238000004088 simulation Methods 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000010365 information processing Effects 0.000 claims description 10
- 238000004364 calculation method Methods 0.000 claims description 7
- 238000012549 training Methods 0.000 claims description 6
- 238000011084 recovery Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 11
- 238000004590 computer program Methods 0.000 description 7
- 238000012360 testing method Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0087—Monitoring; Testing using service channels; using auxiliary channels using auxiliary channels or channel simulators
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18502—Airborne stations
- H04B7/18506—Communications with or from aircraft, i.e. aeronautical mobile service
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/06—Testing, supervising or monitoring using simulated traffic
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, all the components are communicated and interconnected based on the Ethernet, and data forwarding and link parameter control are carried out on a short wave and ultrashort wave communication link between the accessed flight management terminal and the aircraft simulator, so that the wireless communication link simulation between multiple access terminals is realized. The invention can be used for the analog simulation of various wireless communication links, and can simulate and construct a wireless communication network environment close to reality with lower cost.
Description
Technical Field
The invention relates to the field of communication 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 used in the field of army and civilian, which have a large electromagnetic influence on the aerial flight of an aircraft. How to carry out aircraft piloting and flight management under complex electromagnetic environments and severe communication conditions is a difficult problem. The traditional solution is to build a physical test environment close to a real scene, and continuously perform flight management and flight training in the environment to form a flight management and operation control mechanism for coping with various conditions for real flight. But this requires the deployment of a large number of network infrastructures (including real aircraft, multiple ground wireless communication sites, wired networks, switches, etc.) to construct the communication links of the flight management terminal to the airborne aircraft. The method has the defects of high cost, immature technology, long time period and the like, and also has the risk of leakage of key communication parameters such as frequency, time sequence and the like in a physical test. Therefore, the communication test environment for testing the fidelity is provided under the laboratory condition, and the communication test environment has important theoretical significance and practical value.
Disclosure of Invention
The invention aims to: 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 aircraft simulator in an Ethernet environment, and greatly save the expensive expense required by aviation communication network test.
The technical scheme is as follows: in a first aspect, there is provided a wireless communication link simulation system including a flight management data processing apparatus, a communication data exchange device, and a communication simulation control terminal, wherein,
the flight management data processing equipment converts flight management information from the flight management terminal into an instruction which can be identified by the aircraft simulator according to a specified communication protocol standard, forwards the instruction to the aircraft simulator through the communication simulation control terminal, converts information returned by the aircraft 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 aircraft simulator, and realizes network interconnection between the flight management terminal and the aircraft simulator.
In a second aspect, a method of simulating a wireless communication link, based on the system of the first aspect, comprises the steps of:
(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 aircraft simulator according to a specified communication protocol standard, and sends the instruction to the communication simulation control terminal;
(2) The communication simulation control terminal calculates the time delay and the bandwidth control parameter of the wireless communication link based on the given wireless communication link parameter, and controls the flow of the forwarded data based on the corresponding time delay and bandwidth control parameter;
(3) The aircraft simulator receives the instruction information after flow control, guides a flight driver to carry out flight training in the communication environment, and returns the position and platform state information of the aircraft simulator in a flight platform to a flight management terminal through a communication simulation control terminal;
(4) And 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.
The beneficial effects are that: the wireless communication link simulation system and the method provided by the invention realize the wireless communication simulation of the communication link between the flight management terminal and the aircraft simulator, and provide new means for aircraft flight management and flight training under different network communication environments (especially under communication interference states). The invention can greatly reduce the expensive expense required by the aviation communication network test.
Drawings
FIG. 1 is a schematic diagram of a wireless communication link simulation system usage scenario in accordance with an embodiment of the present invention;
FIG. 2 is a diagram of a wireless communication link simulation system according to an embodiment of the present invention;
FIG. 3 is a functional block diagram of a flight management data processing device according to an embodiment of the present invention;
FIG. 4 is a flow chart of a flight management data processing device business process according to an embodiment of the invention;
fig. 5 is a functional composition 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 analog control terminal according to an embodiment of the present invention;
fig. 7 is a flow chart of a wireless communication link simulation system usage in accordance with an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further described below with reference to the accompanying 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 each device or device is communicatively connected according to the network topology shown in fig. 1, where the flight management data processing device and the communication simulation control terminal are both connected to the communication data exchange device, and an external access device of the system includes a plurality of flight management terminals and an aircraft simulator, where 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 wireless communication link transmission characteristic simulation between the flight management terminal and the aircraft 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 for exemplary purposes only and are not limiting on the number of terminals, the system supporting simulation of wireless communication transmission characteristics between one-to-one (i.e., one flight management terminal and one aircraft simulator), one-to-many (i.e., one flight management terminal and multiple aircraft simulators), and many-to-many (i.e., multiple flight management terminals and multiple aircraft simulators) terminals.
In general, 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. Meanwhile, the position information and platform state information of the aircraft simulator on the flight platform can be received and visualized display can be carried out.
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 aircraft simulator, and realizes the network interconnection between the flight management data processing equipment and the aircraft simulator.
And the communication simulation control terminal calculates the time delay and the bandwidth transmission characteristic of the wireless communication link according to the wireless communication link parameters input by the user, and realizes the time delay and the bandwidth control of the propagation data in the network through the flow control command.
The flight management terminal provides flight management auxiliary decision and data instruction transmission, can transmit flight route and common literature information to the flight simulator, and can receive position and state information of the aircraft simulator and perform visual display.
And the aircraft simulator receives the flight management information after flow control and guides a flight pilot to train in the communication environment. And simultaneously, the position and platform state information of the aircraft simulator in the flight platform are transmitted back to the flight management terminal.
In the embodiment of the invention, the flight management terminals are in one-to-one correspondence with the flight management data processing devices, namely, one flight management data processing device is correspondingly provided for each flight management terminal to perform data processing and forwarding. The flight management terminal and the flight management data processing device may be in data transmission, for example, via a serial connection.
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. 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 performs corresponding format coding and decoding conversion according to the message protocol. And the flight management information forwarding module forwards the data to the appointed terminal according to the message destination address.
The business process flow of the flight management data processing device is shown in fig. 4. Referring to fig. 4, the flight management information receiving module classifies the received information reception and filtering using a listening mode, i.e., receives only a specific type of information. In the embodiment of the invention, a flag_sr carried by a MESSAGE packet is used for distinguishing whether a MESSAGE is Sent (SEND) or Received (RECEIVE), and flag_sr=message_send=0 indicates that the MESSAGE is sent by a flight management terminal and needs to be coded and sent; flag_sr=message_recv=1 indicates that the MESSAGE is recovery information of the flight management terminal, that is, information returned by the aircraft simulator, and decoding recovery is required; otherwise, the message is filtered.
The flight management information processing module further processes the information according to the type of the received message. In the embodiment of the invention, specific information types are distinguished according to an identifier FMSG_PROC, information is sent to a flight management terminal, the information types are judged first, FMSG_PROC=0 and FMSG_PROC=1 respectively represent route information and literature information, a flight management information processing module assembles a message body according to a standard interface of an aircraft simulator, adds a message header and encodes a 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 and platform state information of the aircraft simulator in a flight platform, and a flight management information processing module assembles a message body and adds a message header according to a standard interface of a flight management terminal.
And the flight management information forwarding module calls a standard message forwarding interface to forward the message to the terminal with the appointed IP address.
It should be understood that the setting of flag bits or identifier codes for message types in the business process flow of the flight management data processing device described in connection with fig. 4 is for illustrative and exemplary purposes only and is not intended to limit the scope of the invention but is not intended to be construed as a limitation upon the understanding of the technical solution by those skilled in the art.
Referring to fig. 5, the communication data exchange device includes a data forwarding module and an address management module, and can implement 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 exchange device is essentially a switch divided into two VLANs, and two connection ports are provided for the double network cards of the communication analog control terminal, so that the communication flow between the two ports is controlled. And referring to the function of the switch, the address management is to manage the mapping relation between the MAC address and the port of the terminal accessing the switch, so that the data communication is facilitated. And the data forwarding realizes the data transmission of the VLAN1 port and the VLAN2 port which are connected by the communication analog control terminal. With reference to fig. 1, 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. The communication simulation control terminal is provided with a double network card, 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 dividing the two VLANs, communication between the aircraft simulator and the flight management terminal must simulate the control terminal through communication to realize data flow control. The communication between two ports of different VLAN can only be carried out through the communication simulation control terminal, the information of 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, the data sent back from the aircraft simulator to the flight management terminal is sent from the aircraft simulator to the IP1 of the communication simulation control terminal via the communication data exchange device, and the communication simulation control terminal receives the IP2 sent to itself, and the IP2 sends the data to the flight management data processing device.
The communication simulation control terminal carries out simulation on the coding, modulation and channel transmission process 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 to realize the flow control of the communication link. As shown in fig. 6, the communication simulation control terminal includes a data route forwarding configuration module, a wireless communication parameter configuration module, a communication link flow calculation module, a communication link flow control module, and a system state monitoring module. The data route forwarding configuration module provides interfaces for carrying out parameter configuration on the IP address of the information receiving and sending flight management data processing equipment and the IP address of the aircraft simulator; the wireless communication parameter configuration module provides an interface for a user to input wireless communication parameters, including transmission distance, protocol type, code modulation parameters and channel propagation parameters; the communication link flow calculation module calculates flow parameters such as communication time delay, bandwidth and the like according to the wireless communication parameters input by the user; the wireless communication parameter configuration module and the communication link flow calculation module can simulate the condition that communication time delay and interruption are caused by severe communication conditions, so that a communication training environment under the severe conditions is provided for pilots. The communication simulation control terminal also provides a start button, when the IP address is configured and the parameters are obtained through calculation, the button can be clicked to start simulation, at the moment, a communication link between VLAN1 and 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 performs visual monitoring on the IP, network card information, communication link connection state, link transmission characteristics (time delay, bandwidth and the like) and the like of each system so as to timely treat abnormal conditions. Here, the monitored system IP refers to the aircraft simulator IP and the IP of the flight management data processing device set by the communication simulation control terminal, and may have one or more links.
Fig. 7 shows a use flow of a wireless communication link simulation system, comprising the steps of:
step 1: and accessing the flight management terminal participating in the wireless communication simulation to the flight management data processing equipment, and accessing the aircraft simulator participating in the wireless communication simulation to the communication data exchange device.
Step 2: configuring an IP address of a flight management data processing terminal for receiving and transmitting messages and an IP address of an aircraft simulator at a communication simulation control terminal;
step 3: configuring wireless communication link parameters including transmission distance, protocol type, code 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;
step 4: the information of the flight route and the common literature is sent from the flight management terminal, is processed by the flight management data processing equipment and then is forwarded to the communication simulation control terminal, and is forwarded to the communication data exchange device by the communication simulation control terminal, and is forwarded to the aircraft simulator by the communication data exchange device, so that the received information can be synchronously checked in the aircraft simulator, and the communication delay and the bandwidth data in the network are monitored at the communication simulation control terminal.
Step 5: the information of the position and the platform state of the aircraft simulator are transmitted to the communication simulation control terminal through the communication data exchange device, the communication simulation control terminal controls the flow of data and then transmits the data to the flight management data processing equipment, the flight management data processing equipment processes the data according to the flight management standard and then transmits the data to the flight management terminal, the received information can be synchronously checked at the flight management terminal, and the communication simulation control terminal monitors the communication time delay and the bandwidth data in the network.
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 aircraft simulator according to a specified communication protocol standard, and sends the instruction to the communication simulation control terminal; the flight management information comprises a flight route and common literature information;
(2) The communication simulation control terminal calculates the time delay and the bandwidth control parameter of the wireless communication link based on the given wireless communication link parameter, and controls the flow of the forwarded data based on the corresponding time delay and bandwidth control parameter;
(3) The aircraft simulator receives the instruction information after flow control, guides a flight driver to carry out flight training in the communication environment, and returns the position and platform state information of the aircraft simulator in a flight platform to a flight management terminal through a communication simulation control terminal;
(4) And 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.
It will be appreciated by those skilled in the art that 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 flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations 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 aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.
Claims (4)
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 the flight management terminal into an instruction which can be identified by the aircraft simulator according to a specified communication protocol standard, forwards the instruction to the aircraft simulator through the communication simulation control terminal, converts information returned by the aircraft simulator according to the standard of the flight management terminal, and sends the information to the flight management terminal, wherein the flight management information from the flight management terminal comprises flight path information and literature information, the information returned by the aircraft simulator comprises position information and platform state information of the aircraft simulator in a flight platform, and the communication protocol standard comprises short wave and ultrashort wave communication; the flight management data processing equipment comprises 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 communication protocol standard; the flight management information forwarding module forwards the data to a designated terminal according to the message destination address;
the communication simulation control terminal calculates the transmission characteristic of the wireless communication link based on the given wireless communication parameters, and performs flow control on the forwarded data based on the transmission characteristic of the wireless communication link, wherein the calculation of the transmission characteristic of the wireless communication link based on the given wireless communication parameters by the communication simulation control terminal comprises the following steps: the communication simulation control terminal calculates corresponding time delay and bandwidth control parameters based on the transmission distance, the communication protocol standard type, the code modulation parameters and the channel propagation parameters input by the user; the communication simulation control terminal comprises a data route 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 route forwarding configuration module provides an interface for carrying out parameter configuration on an IP address of a flight management terminal for receiving and transmitting messages and an IP address of an aircraft simulator; 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 the wireless communication parameters input by the user; the communication link flow control module controls the data flow of the communication link through a flow control command;
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 aircraft simulator, and realizes network interconnection between the flight management terminal and the aircraft simulator, wherein two VLANs are arranged in the communication data exchange device, a plurality of network access ports are provided in each VLAN, wherein a port under VLAN1 is connected with the flight management data processing equipment, and a port under VLAN2 is connected with the aircraft simulator; the communication simulation control terminal is provided with double network cards, one network card interface is connected with a VLAN1 port of the communication data exchange device through a network cable, and the other network card interface is connected with a VLAN2 port of the communication data exchange device through the network cable.
2. The wireless communication link simulation system according to claim 1, wherein the flight management information receiving module distinguishes the MESSAGE types by flag_sr carried by the MESSAGE, and flag_sr=message_send=0 indicates that the MESSAGE is sent by the flight management terminal and needs to be coded; flag_sr=message_recv=1 indicates that the MESSAGE is flight management terminal recovery information, and decoding recovery is required; otherwise, the message is filtered.
3. The wireless communication link simulation system according to claim 1, wherein the flight management information processing module distinguishes specific information types according to an identifier fmsg_proc, for the flight management terminal to send information, firstly judging the information types, fmsg_proc=0 and fmsg_proc=1 respectively representing route information and message electric information, and the flight management information processing module assembles a message body and adds a message header according to a standard interface of an aircraft simulator and encodes a 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 and platform state information of the aircraft simulator in a flight platform, and a flight management information processing module assembles a message body and adds a message header according to a standard interface of a flight management terminal.
4. A method of wireless communication link simulation based on the system of any of claims 1-3, comprising the steps of:
(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 aircraft simulator according to a specified communication protocol standard, and sends the instruction to the communication simulation control terminal;
(2) The communication simulation control terminal calculates the time delay and the bandwidth control parameter of the wireless communication link based on the given wireless communication parameter, and controls the flow of the forwarded data based on the corresponding time delay and bandwidth control parameter;
(3) The aircraft simulator receives the instruction information after flow control, guides a flight driver to carry out flight training in the communication environment, and returns the position and platform state information of the aircraft simulator in a flight platform to a flight management terminal through a communication simulation control terminal;
(4) And 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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