CN113472608A - VDES simulation multi-user test system and test method - Google Patents
VDES simulation multi-user test system and test method Download PDFInfo
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- CN113472608A CN113472608A CN202110732678.9A CN202110732678A CN113472608A CN 113472608 A CN113472608 A CN 113472608A CN 202110732678 A CN202110732678 A CN 202110732678A CN 113472608 A CN113472608 A CN 113472608A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The application provides a VDES simulation multi-user test system, which comprises an upper computer and a communication module in data connection with the upper computer; the upper computer is used for carrying out instruction control, state display and data management on the communication module and realizing remote control through a network application interface; the communication module is used for simulating multiple users, caching service data, executing instructions of an upper computer, sending state information to the upper computer, processing a VDES communication protocol, processing a VDES baseband digital signal and processing a VDES radio frequency signal; and the upper computer generates a test report according to the service data receiving and sending conditions and the state information of the communication module, and completes the whole test process.
Description
Technical Field
The invention relates to the field of measurement and control, in particular to a VDES simulation multi-user test system and a test method.
Background
VDES (VHF Data Exchange System, very high frequency Data Exchange System) is an enhanced and upgraded System for Automatic Identification System (AIS) of ships in the field of marine mobile services, which was proposed after 2012 world radio communication (WRC-12) congress of the international telecommunication union, and was determined by co-examination of 162 member countries and 136 international organizations and groups at 2015 world radio communication congress (WRC-15). The VDES adds special application message (ASM) and broadband very high frequency data exchange (VDE) functions on the basis of integrating the existing AIS functions, and the VDE comprises two systems of VDE-TER (VDE-Terrestrial, ground-based VDE) and VDE-SAT (VDE-Satellite-based VDE). The VDE-TER is responsible for offshore area ship-to-shore based communication or ship-to-ship communication, and the VDE-SAT is for the open sea (area that the shore-based cannot cover). Currently, the VDES technical standard is described in detail in International Association of Lighthouse Authorities (International Association of fairway standards) version G11392020 (abbreviated as G1139).
The shore-based base station and the satellite load are used as important links of VDES data exchange, bear data interaction of multi-user access, and the multi-user simulation terminal has important function and performance detection functions in the debugging and testing processes. In the process of developing the communication equipment, the test can be normally divided into a laboratory debugging stage, a laboratory wired and wireless test and an outfield test, and for satellite loads, an in-orbit test stage is also provided. VDES is a very powerful solution for offshore communication, and the conditions for testing in the field and in the orbit are harsh and complex for general testers, and remote control is very effective. The VDES system comprises AIS, LAIS and ASM of multi-user pure reception, and VDE-SAT and VDE-TER systems of multi-user bidirectional communication, which relate to various message types, communication services and communication flows, and the test flow is complex.
Disclosure of Invention
In order to overcome the defects in the prior art, the application provides a VDES simulation multi-user test system, which comprises an upper computer and a communication module in data connection with the upper computer;
the upper computer performs instruction control, state display and data management on the communication module, and realizes remote control through a network application interface;
the communication module realizes simulation of multiple users, service data caching, upper computer instruction execution, state information transmission to an upper computer, a VDES communication protocol, VDES baseband digital signal processing and VDES radio frequency signal processing;
and the upper computer generates a test report according to the service data receiving and sending conditions and the state information of the communication module, and completes the whole test process.
In one possible implementation, the upper computer includes:
the application layer is used for supporting remote data acquisition, transmission and control;
a data layer for realizing analysis, processing and verification of service data,
the control layer is used for realizing the control and the state display of the communication module;
and the interface layer is used for realizing data interaction with the communication module.
In one possible implementation, the communication module includes:
the interface layer 1 is used for realizing data interaction between the communication module and an upper computer;
the control layer is used for executing the upper computer instruction and acquiring the state of the communication module;
the user protocol layer is used for realizing user management and VDES communication protocol execution;
the interface layer 2 is used for realizing an interaction interface between the data of the user protocol layer and the data of the baseband processing layer;
a baseband processing layer for performing digital signal transmission and reception of the digital signal;
and a radio frequency layer for performing reception and transmission of radio frequency signals.
In one possible implementation, the data interaction of the interface layer 2 and the user protocol layer includes service data and signaling.
In one possible implementation, the performing, by the baseband processing layer, digital signal transmission and digital signal reception further includes: modulation-demodulation and coding-decoding.
In one possible implementation, the test content of the system includes: and testing at least one of the receiving dynamic range, the communication frequency point, the receiving sensitivity, the used Link ID and the VDE communication protocol flow test of the tested equipment.
In one possible implementation manner, the performing, by the upper computer, instruction control, state display and data management on the communication module includes: the upper computer controls the communication module by sending the instruction code, receives and displays the state data from the communication module, simulates and generates service data and receives the service data of the communication module, and realizes management of the service data.
In one possible implementation manner, the implementing, by the communication module, a simulated multi-user and service data caching includes: and the communication module realizes multi-user protocol management, cache receiving and service data sending according to the multi-user configuration information of the upper computer, and realizes the test requirement under the multi-user communication environment.
In one possible implementation, the testing requirement in the multi-user environment includes: according to the channel model, simulation of VDES multi-user communication is realized, and the test requirements comprise at least one of frequency division multiple access, time division multiple access and multi-user interference test cases.
In another aspect, the present application provides a testing method for a VDES analog multi-user testing system, the method at least includes the following steps:
s1, an upper computer is provided with a communication module, basic parameter configuration instructions such as communication frequency points, transmission power, user quantity and the like are transmitted and configured, and remote control is supported by the operation;
s2, the communication module executes corresponding instruction information and returns state information of the communication module;
s3, connecting test equipment, and executing a corresponding test case by an upper computer;
s4, for data receiving, the communication module analyzes and processes the received service data and sends the service data to an upper computer, and user state information is updated; for data transmission, the communication module frames the service data to be transmitted of the upper computer and transmits the frame;
s5, the communication module collects intermediate state information in the communication process, mainly protocol state information, and returns the intermediate state information to the upper computer for the upper computer to perform data analysis;
and S6, generating a test report by the upper computer software according to the service data receiving and sending condition and the state information.
The test system provided by the application can effectively reduce the cost of software and hardware, is simple to realize, supports the advantages of remote control and the like, improves the universality and the economical efficiency of the sequence control device, and enhances the reliability and the use flexibility of equipment.
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In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a functional diagram of a VDES simulation multi-user testing system provided by the present invention;
FIG. 2 is a flow chart of a VDES simulation multi-user testing system provided by the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a design of a VDES simulation multi-user test system for improving the universality and the economy of a sequence control device, enhancing the reliability of equipment and using flexibility, which is used for testing and researching and developing VDE shore-based equipment and VDE satellite communication loads and mainly solves the problems of the functions and the performance tests of hardware, a physical layer and a protocol layer of the communication equipment, wherein the test contents include but are not limited to the receiving dynamic range, the communication frequency point, the receiving sensitivity, the used Link ID and the VDE communication protocol flow test of the tested equipment. The Link ID refers to the configuration of each parameter of the physical layer in the VDES standard, and includes the usage bandwidth, the spreading gain, the coding, the modulation scheme, and the like.
The test system consists of an upper computer and a communication module. The upper computer realizes instruction control, state display and data management of the communication module, and remote control is realized through a network application interface. Illustratively, the upper computer controls the communication module by sending the instruction code, receives and displays the state data from the communication module, simulates and generates service data and receives the service data of the communication module, and manages the service data. The management of the service data refers to the management of multi-user service data, and the large user data and the small memory of a general communication module are not beneficial to the storage of the multi-user service data, so that the storage of the service data in an upper computer can simplify the software and hardware design of the communication module.
The communication module realizes simulation of multiple users, service data caching, upper computer instruction execution, state information sending to an upper computer, VDES communication protocols (AIS, LAIS, ASM, VDE-TER and VDE-SAT communication protocols), VDES baseband digital signal processing (for example, VDES signal modulation and sending, VDES signal receiving, sampling and demodulation) and VDES radio frequency signal processing (VDES baseband signal up-conversion and VDES analog signal down-conversion processing), interfaces of the upper computer and the communication module can be other types of hardware interfaces such as serial ports and network ports, and an application interface based on the upper computer can support data interaction through a local area network or a world wide web, so that the remote operation function is achieved. The simulation of multi-user and service data caching means that a communication module realizes multi-user protocol management, caching receiving and sending of service data according to multi-user configuration information of an upper computer, and test requirements under a multi-user communication environment are met. The multi-user protocol management means that a communication module divides a multi-user stack area, and realizes the transceiving of service data and protocol instructions according to a VDES communication protocol flow to complete multi-user protocol management operation; the test requirements under the multi-user environment refer to simulation of VDES multi-user communication realized according to a channel model, and the test requirements include but are not limited to test cases such as frequency division multiple access, time division multiple access, multi-user interference and the like.
In the above, sending the state information to the upper computer means that the communication module returns state data such as a working state of the communication module, software state information, communication protocol signaling information and the like as required according to the configuration information of the upper computer.
The VDES communication protocol refers to AIS, LAIS, ASM, VDE-TER and VDE-SAT communication protocols; VDE shore-based equipment and VDE satellite communications payload refer to implementing the VDEs communications protocol to receive AIS, LAIS, ASM, VDE-TER (VDE only shore-based equipment), VDE-SAT (VDE only satellite communications payload) signals and transmit VDE-TER (VDE only shore-based equipment) and VDE-SAT (VDE only satellite communications payload) signals.
The serial port, the network port and other types of hardware interfaces refer to universal interfaces and can support bidirectional communication.
The invention is explained in further detail below with reference to the drawings.
As shown in fig. 1, a VDES multi-user test system includes an upper computer and a communication module, wherein the communication module is connected with the upper computer through a universal interface (serial port, network port, etc.), so as to implement bidirectional data interaction.
The upper computer can be divided into an application layer, a data layer, a control layer and an interface layer according to functions, and upper computer software runs on the PC, wherein the application layer supports remote data acquisition, transmission and control; the data management layer is used for realizing analysis, processing and verification of service data, and although the communication module can execute the service data, the complexity of hardware and software of the communication module needs to be increased; the control layer realizes the control and state display of the communication module, and a tester executes corresponding operation according to the interface; the interface layer realizes data interaction between the upper computer and the communication module.
The communication module can be divided into an interface layer 1, a control layer, a user protocol layer, an interface layer 2, a baseband processing layer and a radio frequency layer according to functions. The interface layer 1 realizes data interaction between the communication module and an upper computer; the control layer executes the upper computer instruction and collects the state of the communication module; the user protocol layer is used for realizing user management and VDES communication protocol execution; the interface layer 2 is an interface for realizing interaction between the data of the user protocol layer and the data of the baseband processing layer, and comprises service data and signaling; the baseband processing layer is used for executing digital signal transmission and digital signal reception, and comprises processes of modulation and demodulation, coding and decoding and the like; the radio frequency layer performs reception and transmission of radio frequency signals.
As shown in fig. 2, the test flow includes: s1, an upper computer is provided with a communication module, basic parameter configuration instructions such as communication frequency points, transmission power, user quantity and the like are transmitted and configured, and remote control is supported by the operation; s2, the communication module executes corresponding instruction information and returns state information of the communication module; s3, connecting test equipment, and executing a corresponding test case by an upper computer; s4, for data receiving, the communication module analyzes and processes the received service data and sends the service data to an upper computer, and user state information is updated; for data transmission, the communication module frames the service data to be transmitted of the upper computer and transmits the frame; s5, the communication module collects intermediate state information in the communication process, mainly protocol state information, and returns the intermediate state information to the upper computer for the upper computer to perform data analysis; and S6, generating a test report by the upper computer software according to the service data receiving and sending condition and the state information, and completing the whole test process.
The inventive concept is explained in detail herein using specific examples, which are given only to aid in understanding the core concepts of the invention. It should be understood that any obvious modifications, equivalents and other improvements made by those skilled in the art without departing from the spirit of the present invention are included in the scope of the present invention.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the application being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the application is limited only by the appended claims.
It should be understood that reference to "a plurality" herein means two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (10)
1. A VDES simulation multi-user test system is characterized by comprising an upper computer and a communication module in data connection with the upper computer;
the upper computer performs instruction control, state display and data management on the communication module, and realizes remote control through a network application interface;
the communication module realizes simulation of multiple users, service data caching, upper computer instruction execution, state information transmission to an upper computer, a VDES communication protocol, VDES baseband digital signal processing and VDES radio frequency signal processing;
and the upper computer generates a test report according to the service data receiving and sending conditions and the state information of the communication module, and completes the whole test process.
2. The VDES analog multi-user test system of claim 1, wherein the host computer comprises:
the application layer is used for supporting remote data acquisition, transmission and control;
a data layer for realizing analysis, processing and verification of service data,
the control layer is used for realizing the control and the state display of the communication module;
and the interface layer is used for realizing data interaction with the communication module.
3. The VDES analog multi-user test system of claim 1, wherein the communication module comprises:
the interface layer 1 is used for realizing data interaction between the communication module and an upper computer;
the control layer is used for executing the upper computer instruction and acquiring the state of the communication module;
the user protocol layer is used for realizing user management and VDES communication protocol execution;
the interface layer 2 is used for realizing an interaction interface between the data of the user protocol layer and the data of the baseband processing layer;
a baseband processing layer for performing digital signal transmission and reception of the digital signal;
and a radio frequency layer for performing reception and transmission of radio frequency signals.
4. The VDES analog multi-user test system of claim 3, wherein the data interaction of the interface layer 2 and the user protocol layer comprises traffic data and signaling.
5. The VDES analog multi-user test system of claim 3, wherein the baseband processing layer performing digital signal transmission and digital signal reception further comprises: modulation-demodulation and coding-decoding.
6. The VDES analog multi-user test system according to claim 1, wherein the system test comprises: and testing at least one of the receiving dynamic range, the communication frequency point, the receiving sensitivity, the used LinkID and the VDE communication protocol process of the tested equipment.
7. The VDES simulation multi-user test system of claim 1, wherein the host computer performing command control, status display and data management on the communication module comprises: the upper computer controls the communication module by sending the instruction code, receives and displays the state data from the communication module, simulates and generates service data and receives the service data of the communication module, and realizes management of the service data.
8. The VDES analog multi-user test system according to claim 1, wherein the communication module implementing analog multi-user, service data caching comprises: and the communication module realizes multi-user protocol management, cache receiving and service data sending according to the multi-user configuration information of the upper computer, and realizes the test requirement under the multi-user communication environment.
9. The VDES analog multi-user test system of claim 8, wherein the testing requirements in the multi-user environment comprise: according to the channel model, simulation of VDES multi-user communication is realized, and the test requirements comprise at least one of frequency division multiple access, time division multiple access and multi-user interference test cases.
10. A testing method of a VDES simulation multi-user testing system is characterized by at least comprising the following steps:
s1, an upper computer is provided with a communication module, basic parameter configuration instructions such as communication frequency points, transmission power, user quantity and the like are transmitted and configured, and remote control is supported by the operation;
s2, the communication module executes corresponding instruction information and returns state information of the communication module;
s3, connecting test equipment, and executing a corresponding test case by an upper computer;
s4, for data receiving, the communication module analyzes and processes the received service data and sends the service data to an upper computer, and user state information is updated; for data transmission, the communication module frames the service data to be transmitted of the upper computer and transmits the frame;
s5, the communication module collects intermediate state information in the communication process, mainly protocol state information, and returns the intermediate state information to the upper computer for the upper computer to perform data analysis;
and S6, generating a test report by the upper computer software according to the service data receiving and sending condition and the state information.
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Cited By (5)
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| CN113891473A (en) * | 2021-10-21 | 2022-01-04 | 上海德寰通信技术有限公司 | Data channel resource allocation method, satellite, ship station and system |
| CN114362840A (en) * | 2021-12-10 | 2022-04-15 | 中电科思仪科技(安徽)有限公司 | Multi-user simulation device and method based on mobile communication terminal simulator |
| CN115550881A (en) * | 2022-11-24 | 2022-12-30 | 交通运输部北海航海保障中心天津通信中心 | VDES shore-based test system |
| CN117526979A (en) * | 2024-01-04 | 2024-02-06 | 天津讯联科技有限公司 | AIS baseband transmitting signal generating system and method for simulating VDES |
| CN117615351A (en) * | 2023-11-23 | 2024-02-27 | 交通运输部北海航海保障中心天津通信中心 | VDES shore-based integrated management system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113891473A (en) * | 2021-10-21 | 2022-01-04 | 上海德寰通信技术有限公司 | Data channel resource allocation method, satellite, ship station and system |
| CN113891473B (en) * | 2021-10-21 | 2023-11-03 | 上海德寰通信技术有限公司 | Data channel resource allocation method, satellite, ship station and system |
| CN114362840A (en) * | 2021-12-10 | 2022-04-15 | 中电科思仪科技(安徽)有限公司 | Multi-user simulation device and method based on mobile communication terminal simulator |
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| CN117615351A (en) * | 2023-11-23 | 2024-02-27 | 交通运输部北海航海保障中心天津通信中心 | VDES shore-based integrated management system |
| CN117526979A (en) * | 2024-01-04 | 2024-02-06 | 天津讯联科技有限公司 | AIS baseband transmitting signal generating system and method for simulating VDES |
| CN117526979B (en) * | 2024-01-04 | 2024-03-26 | 天津讯联科技有限公司 | AIS baseband transmitting signal generating system and method for simulating VDES |
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