Internet of vehicles test system, method and device, storage medium and test terminal

Abstract

The invention provides an Internet of Vehicles test system, method and device, a storage medium and a test terminal, and relates to the field of Internet of Vehicles. The Internet of Vehicles test system comprises a channel simulation system and a plurality of test terminals, the channel simulation system is a system for simulating a wireless communication environment in a physical world; the channel simulation system is used for establishing communication connection between each test terminal and at least a plurality of tested terminals, and the stability of each test terminal is higher than the stability of the plurality of tested terminals. In this way, an integrated test instrument in an existing simulation test system is replaced by a plurality of test terminals equal to the tested terminal in role, and therefore the actual communication environment of the Internet of Vehicles can be simulated.

Description

Technical Field

[0001] The present application relates to the field of vehicle networking, and more specifically, to a vehicle network testing system, method, device, storage medium and test terminal. Background Art

[0002] like Figure 1 As shown, this is a schematic diagram of an indoor simulation test system commonly used for cellular mobile terminals. The integrated tester is used to simulate a base station, and the channel simulator simulates the multipath and delay, Doppler frequency deviation and various signal losses generated by the actual channel environment. The terminal under test is connected one-to-one with the integrated tester through the channel simulator. The integrated tester transmits synchronization signals and cell broadcast signals. After the test terminal is turned on, it searches for network synchronization according to the normal process and establishes a connection with the integrated tester. After that, various tests are simulated in the outdoor field under the control of the integrated tester.

[0003] For V2X (Vehicle-to-Everything) or ad hoc mobile communication terminals, since the terminals are equivalent, the indoor simulation test system commonly used for cellular mobile terminals cannot be used to test such scenarios. Summary of the invention

[0004] In order to overcome at least one of the deficiencies in the prior art, the present application provides a vehicle network test system, method, device, storage medium and test terminal, specifically including:

[0005] In a first aspect, the present application provides a vehicle networking test system, the vehicle networking test system comprising a channel simulation system and a plurality of test terminals;

[0006] The channel simulation system is a system that simulates the wireless communication environment in the physical world;

[0007] The channel simulation system is used to establish a communication connection between each test terminal and at least the multiple terminals under test, and the stability of each test terminal is higher than the stability of the multiple terminals under test.

[0008] In combination with the optional implementation manner of the first aspect, the channel simulation system includes a plurality of cascaded channel simulators.

[0009] In a second aspect, the present application further provides a vehicle networking test method, which is applied to a test terminal in the vehicle networking test system, and the method includes:

[0010] Obtaining an inherent delay generated by a channel simulation system in the Internet of Vehicles test system;

[0011] Determine a target transmission time of a transmission frame in a current test cycle according to the inherent time delay, wherein the target transmission time is before the standard synchronous transmission time, and the target transmission time differs from the standard synchronous transmission time by the inherent time delay;

[0012] The transmit frame is transmitted at the target transmit time.

[0013] In conjunction with the optional implementation manner of the second aspect, after transmitting the transmission frame at the target transmission time, the method further includes:

[0014] The start response frame in the current test cycle is received at the standard synchronous reception time.

[0015] In combination with an optional implementation manner of the second aspect, the test terminal operates in a time division duplex mode, the termination response frame in the current test cycle includes a plurality of symbols, and the method further includes:

[0016] Remaining symbols except the last symbol in the termination response frame are received.

[0017] In combination with the optional implementation manner of the second aspect, the method further includes:

[0018] The transmission frame of the next test cycle is transmitted within the reception time of the last symbol.

[0019] In conjunction with the optional implementation manner of the second aspect, the transmission time of the next test cycle and the reception time of the last symbol satisfy the following relationship:

[0020] Δ = T - Δtx - Δrx;

[0021] In the formula, Δ represents the time difference between the transmission time of the next test cycle and the reception time of the last symbol, T represents the communication duration of the termination response frame, Δtx represents the inherent delay, and Δrx represents the.

[0022] In a third aspect, the present application further provides a vehicle networking test device, which is applied to a test terminal in the vehicle networking test system, and the device includes:

[0023] A time adjustment module is used to obtain the inherent time delay generated by the channel simulation system in the vehicle networking test system; according to the inherent time delay, determine the target transmission time of the transmission frame in the current test cycle, wherein the target transmission time is before the standard synchronous transmission time, and the target transmission time differs from the standard synchronous transmission time by the inherent time delay;

[0024] The data transceiver module is used to transmit the transmission frame at the target transmission time.

[0025] In conjunction with the optional implementation manner of the third aspect, after transmitting the transmission frame at the target transmission time, the data transceiver module is further used to:

[0026] The start response frame in the current test cycle is received at the standard synchronous reception time.

[0027] In combination with an optional implementation manner of the third aspect, the test terminal operates in a time division duplex mode, the termination response frame in the current test cycle includes a plurality of symbols, and the data transceiver module is further used to:

[0028] Remaining symbols except the last symbol in the termination response frame are received.

[0029] In conjunction with the optional implementation manner of the third aspect, the data transceiver module is further used for:

[0030] The transmission frame of the next test cycle is transmitted within the reception time of the last symbol.

[0031] In conjunction with the optional implementation manner of the third aspect, the transmission time of the next test cycle and the reception time of the last symbol satisfy the following relationship:

[0032] Δ = T - Δtx - Δrx;

[0033] In the formula, Δ represents the time difference between the transmission time of the next test cycle and the reception time of the last symbol, T represents the communication duration of the termination response frame, Δtx represents the inherent delay, and Δrx represents the reception delay of the start response frame.

[0034] In a fourth aspect, the present application also provides a storage medium, which stores a computer program. When the computer program is executed by a processor, the Internet of Vehicles testing method is implemented.

[0035] In a fifth aspect, the present application also provides a test terminal, which includes a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the Internet of Vehicles testing method is implemented.

[0036] Compared with the prior art, this application has the following beneficial effects:

[0037] The present application provides a vehicle networking test system, method, device, storage medium and test terminal. Among them, the vehicle networking test system includes a channel simulation system and multiple test terminals; the channel simulation system is a system that simulates the wireless communication environment in the physical world; the channel simulation system is used to establish a communication connection between each test terminal and at least multiple terminals under test, and the stability of each test terminal is higher than the stability of multiple terminals under test. In this way, the comprehensive tester in the existing simulation test system is replaced with multiple test terminals that have equal roles to the terminals under test, so that the actual communication environment of the vehicle networking can be simulated. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0039] Figure 1 A schematic diagram of the structure of an indoor simulation test system provided in an embodiment of the present application;

[0040] Figure 2 A schematic diagram of channel connections in a channel simulator provided in an embodiment of the present application;

[0041] Figure 3 A connection diagram of a channel simulation system provided in an embodiment of the present application;

[0042] Figure 4 A schematic diagram of the cascade connection of a channel simulator provided in an embodiment of the present application;

[0043] Figure 5 A schematic diagram of a vehicle networking testing method provided in an embodiment of the present application;

[0044] Figure 6 A schematic diagram of the timing adjustment principle provided in an embodiment of the present application;

[0045] Figure 7 A schematic diagram of the structure of a vehicle networking test device provided in an embodiment of the present application;

[0046] Figure 8 A schematic diagram of the structure of a test terminal provided in an embodiment of the present application.

[0047] Icon: 101 - time adjustment module; 102 - data transceiver module; 201 - memory; 202 - processor; 203 - communication unit; 204 - system bus. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0050] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0051] In the description of the present application, it should be noted that the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. In addition, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0052] Based on the above statement, as introduced in the background technology, for V2X (Vehicle-to-Everything) or self-organizing network mobile communication terminals, since the terminals are equivalent, the indoor simulation test system commonly used for cellular mobile terminals cannot be used to test such scenarios.

[0053] It should be understood here that the difference between V2X and cellular mobile communications is that there is no central device similar to a base station, and the connection between terminals and base stations is not one-to-one. Figure 2As shown in the figure, there are n terminals, each of which is equal to the other terminals and needs to perform receiving and sending tests with other terminals through a channel simulator. The n terminals are connected in pairs through the channel simulator. For example, terminal 1 is connected to other terminals through communication paths such as P12, P13, P14...P1n, where each path represents a cluster of multipath channels. The channel simulator can be used to set test conditions such as the number of multipaths, attenuation, delay, and Doppler. Therefore, as the number of terminals increases, the number of channel paths required for the channel simulator is extremely large, that is, N terminals need to be supported by the channel simulator. For example, 20 terminals require up to 190 channel paths, and 30 terminals require 435 paths. This requirement makes the channel simulator too complex, and the existing channel simulators used to test cellular types are difficult to meet the needs of ultra-large-scale simulation tests.

[0054] Based on the discovery of the above technical problems, the inventors have proposed the following technical solutions to solve or improve the above problems through creative work. It should be noted that the defects in the solutions in the above prior art are the results obtained by the inventors after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in the embodiments of the present application for the above problems below should all be the contributions made by the inventors to the present application in the process of invention and creation, and should not be understood as technical contents known to those skilled in the art.

[0055] In view of the above problems, this embodiment provides a vehicle networking test system. The vehicle networking test system includes a channel simulation system and multiple test terminals; the channel simulation system is a system that simulates the wireless communication environment in the physical world; the channel simulation system is used to establish a communication connection between each test terminal and at least multiple terminals under test, and the stability of each test terminal is higher than the stability of multiple terminals under test. In this way, the comprehensive tester in the existing simulation test system is replaced with multiple test terminals that have equal roles to the terminals under test, so that the actual communication environment of the vehicle networking can be simulated.

[0056] For example, Figure 3 As shown, one side of the channel simulation system is connected to multiple test terminals (test terminals 1~n), and the other side is connected to multiple terminals under test (test terminals 1~n). The channel simulation system is used to establish a communication connection between each test terminal and at least multiple terminals under test.

[0057] Of course, in some other implementations, the user can also establish communication connections between multiple test terminals and multiple tested terminals in pairs through the channel simulation system, which means that each test terminal is not limited to communicating with the tested terminal, but also communicates with other test terminals.

[0058] In this embodiment, the channel simulation system does not include one channel simulator or multiple cascaded channel simulators. When the channel simulation system includes multiple cascaded channel simulators, the channel simulation system can be used to simulate a super large-scale test environment. Figure 4 As shown, by cascading and expanding multiple channel simulators to form a channel simulation system, the number of test terminals and tested terminals that can be accessed can be greatly increased. Of course, those skilled in the art can adaptively adjust the number of channel simulators on both sides of the test terminal and the tested terminal as needed without departing from the inventive concept of the present application.

[0059] In addition, in order to improve the simulation effect, the test terminal can be a terminal device of the same type as the terminal under test, but the stability and reliability of the test terminal is much higher than that of the terminal under test. Of course, in some other implementations, a dedicated test instrument can also be selected as the test terminal.

[0060] In the practice of the above-mentioned Internet of Vehicles test system, it was found that the channel simulator itself has an inherent delay t (generally 1.5 to 3us), which means that when the communication distance is less than ct (c is the speed of light), the channel simulator cannot simulate it. In this regard, it should be understood that the channel simulator is a device or software tool that simulates a wireless communication channel, which can simulate various interferences and fadings to which wireless signals are subjected during transmission, such as multipath number, attenuation, delay, and Doppler. Users can set these parameters as needed so that the channel simulator simulates various channel conditions to evaluate the performance of wireless communication systems in different environments. However, due to the inherent delay of the channel simulator, the actual delay simulated is the inherent delay of the channel plus the delay set by the user. This means that the channel simulator cannot simulate a delay effect that is less than the inherent delay.

[0061] For example, for a channel simulator with an inherent delay of 3us, when the communication distance between the two is less than 900m, the simulation test cannot be performed through the channel simulator. The wireless communication distance in the Internet of Vehicles system is generally less than 1000m, which means that for the Internet of Vehicles system, even if the delay of the channel simulator is set to 0, the channel simulator will still generate a delay of 3us. Therefore, the existence of the inherent delay of the channel simulator makes it impossible for the channel simulator under normal circumstances to simulate the real communication environment.

[0062] It should be noted that the defects existing in the solutions in the above-mentioned prior art are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above-mentioned problems and the solutions proposed in the embodiments of the present application for the above-mentioned problems below should be the contributions made by the inventor to the present application in the process of invention and creation, and should not be understood as technical contents known to technical personnel in this field.

[0063] In view of the inherent delay of the above-mentioned channel simulator, this embodiment also provides a vehicle networking test method, which is applied to a test terminal in a vehicle networking test system to compensate for the inherent delay generated by the channel simulation system. Figure 5 Each step of the method is described in detail. However, it should be understood that the operations of the flowchart may not be implemented in order, and steps without logical contextual relationships may be reversed in order or implemented simultaneously. In addition, those skilled in the art may add one or more other operations to the flowchart, or remove one or more operations from the flowchart under the guidance of the content of this application. Figure 5 As shown, the method includes:

[0064] S101, obtaining an inherent delay generated by a channel simulation system in a vehicle networking test system.

[0065] S102, determining a target transmission time of a transmission frame in a current test cycle according to the inherent delay.

[0066] The target transmission time is before the standard synchronous transmission time, and there is an inherent time delay between the target transmission time and the standard synchronous transmission time.

[0067] S103, transmitting a transmission frame at the target transmission time.

[0068] In this way, the test terminal compensates for the inherent delay generated by the channel simulation system by transmitting the transmission frame in advance.

[0069] In this embodiment, after transmitting the transmission frame at the target transmission time, the test terminal also receives the start response frame in the current test cycle at the standard synchronization reception time. However, it should be understood that due to the inherent delay in the channel simulation system, the arrival time of the response frame will lag behind the standard synchronization reception time. Therefore, the valid data of the start response frame cannot be received within a period of time from the beginning of receiving the response frame, but a certain delay is required before the valid data of the start response frame can be received.

[0070] It should be understood here that after multiple test terminals establish communication connections with multiple terminals under test through the channel simulation system, the terminals under test maintain normal synchronous receiving or transmitting actions during the test process, and the terminals under test need to adaptively adjust the transmission time of the transmission frame and the reception time of the response frame according to the inherent delay of the channel test system. It should also be understood that in the vehicle network system as a wireless communication system, the transmission and reception actions in the wireless communication system do have fixed times and do not occur randomly. Such a design can ensure the accuracy of data transmission and the efficiency of the system; therefore, the timing of transmission (TX) or reception (RX) in the vehicle network system is strictly synchronized with GNSS (Global Navigation Satellite System). The GNSS here mainly plays a role in time synchronization. It provides a precise time reference for the communication system, so that each terminal device can perform transmission and reception operations at an exact time point. This strict timing synchronization is to avoid collision and loss of data packets, and to ensure the efficiency of the communication link.

[0071] For example, assume that there are two terminals A and B. During a communication process, device A transmits a data packet at a specific time point, and device B needs to receive the data packet at a specific time point (for example, a few microseconds or milliseconds later) after the data packet is transmitted. If device B is not ready to receive data at this specific time point, or the transmission time point of device A and the reception time point of device B are not precisely aligned, then the data packet may be lost, resulting in communication failure. Therefore, it is very important to maintain strict timing synchronization so that each terminal can accurately transmit and receive operations at the predetermined time point, thereby improving the accuracy of communication and the efficiency of the system.

[0072] In addition, when testing the Internet of Vehicles system, the number of transmission frames and response frames can be set by the user as needed, usually satisfying a 1:N relationship. When N=9, it means that the test terminal and the tested terminal need to receive 9 response frames for each transmission frame they transmit. In this embodiment, the process of transmitting one transmission frame and receiving 9 response frames is called a complete test cycle. Figure 6As shown, the figure shows a schematic diagram of reception and transmission of the terminal under test and the test terminal, "TX" represents the transmission frame, and "RX" represents the response frame. Since the terminal under test maintains normal synchronous reception or transmission action during the test process, the transmission frame and response frame of the device under test in the figure follow the transmission (TX) or reception (RX) timing synchronized with GNSS, that is, each "TX" transmission moment or "RX" reception moment is accurately determined by the GNSS synchronization module. In contrast, in order to compensate for the inherent delay of the channel test system, the test terminal adjusts the transmission time of the test terminal. Among them, compared with the transmission time and reception timing synchronized by GNSS, the transmission time of the test terminal is advanced by Δtx. Since the transmission time is advanced by Δtx, it can just offset the inherent delay generated by the channel test system, so that the time when the channel simulation system actually sends the transmission frame is exactly the time when GNSS synchronization occurs. Therefore, by flexibly adjusting the timing of the test terminal, the channel simulation system can be used to simulate tests on close-range scenarios.

[0073] The study also found that both the test terminal and the tested terminal adopted a working mode called time-division duplex mode. This mode requires that within a specific time period, the test terminal and the tested terminal respectively transmit and receive data, and during the transmission of data, the test terminal cannot receive data, and during the reception of data, the test terminal cannot transmit data. The design of this time-division duplex mode is mainly to ensure the reliability and effectiveness of data transmission. By strictly controlling the time of transmission and reception, data conflicts and interference can be avoided, thereby improving the quality and stability of communication. However, due to the inherent delay in the channel simulation system, this embodiment will cause the arrival time of the response frame to lag behind the standard synchronous reception time, that is, there is a reception delay of the start response frame. Therefore, if you want to receive a complete termination response frame, it will take more time, which will cause the receiving action to continue until the next test cycle. However, due to the time-division duplex communication mode of the test terminal, if the receiving action needs to continue until the next test cycle, the transmission frame of the next test cycle cannot be transmitted in advance.

[0074] After further research, it is found that the termination response frame in the current test cycle includes multiple symbols, and the last symbol does not transmit actual test data. Therefore, in this embodiment, the last symbol is used to perform transceiver switching or control adjustment during the communication process, that is, the test terminal receives the remaining symbols except the last symbol in the termination response frame, and transmits the transmission frame of the next test cycle within the reception time of the last symbol.

[0075] Since the reception time of the last symbol in the termination response frame has a certain redundancy, the transmission time of the next test cycle and the reception time of the last symbol satisfy the following relationship:

[0076] Δ = T - Δtx - Δrx;

[0077] Where Δ represents the time difference between the transmission time of the next test cycle and the reception time of the last symbol, T represents the communication duration of the termination response frame, Δtx represents the inherent delay, and Δrx represents the reception delay of the start response frame.

[0078] For example, see Figure 6 , the termination response frame in the current test cycle includes 14 symbols Sym0 to Sym13. Since the information in Sym13 is known, the test terminal discards the last symbol in Sym13, and the time difference Δ between the transmission time of the next test cycle and the reception time of the last symbol satisfies the mathematical relationship in the above expression. Therefore, even if the timing of the test terminal is adjusted, it will not cause the test terminal to miss the transmission and reception data, and compensate for the impact of the inherent delay of the channel simulator.

[0079] Based on the same inventive concept as the vehicle networking test method provided in this embodiment, this embodiment also provides a vehicle networking test device. The vehicle networking test device includes at least one software function module that can be stored in the memory 201 in software form or fixed in the test terminal. The processor 202 in the test terminal is used to execute the executable module stored in the memory 201. For example, the software function module and computer program included in the vehicle networking test device. Please refer to Figure 7 , from the functional point of view, the Internet of Vehicles test equipment can include:

[0080] The timing adjustment module 101 is used to obtain the inherent delay generated by the channel simulation system in the vehicle networking test system; determine the target transmission time of the transmission frame in the current test cycle according to the inherent delay, wherein the target transmission time is before the standard synchronous transmission time, and the target transmission time differs from the standard synchronous transmission time by the inherent delay;

[0081] The data transceiver module 102 is used to transmit a transmission frame at a target transmission time.

[0082] In this embodiment, the time adjustment module 101 is used to implement Figure 5 Steps S101 and S102 in the above embodiment, the data transceiver module 102 is used to implement Figure 5 S103 in. For detailed introduction of the above modules, please refer to the specific implementation of the corresponding steps, which will not be repeated in this embodiment. In addition, since the invention has the same concept as the vehicle network testing method, the above time adjustment modules 101 and data transceiver modules 102 can also be used to implement other steps or sub-steps of the method.

[0083] In addition, the functional modules in the various embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.

[0084] It should also be understood that if the above implementation is implemented in the form of a software function module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product, which is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application.

[0085] Therefore, this embodiment further provides a storage medium, which stores a computer program, and when the computer program is executed by a processor, the vehicle network testing method provided in this embodiment is implemented. The storage medium can be a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0086] A test terminal is provided in this embodiment. Figure 8 As shown, the test terminal may include a processor 202 and a memory 201. In addition, the memory 201 stores a computer program, and the processor implements the vehicle networking test method provided in this embodiment by reading and executing the computer program corresponding to the above implementation in the memory 201.

[0087] Continue to see Figure 8 The test terminal further includes a communication unit 203. The memory 201, the processor 202 and the communication unit 203 are electrically connected to each other directly or indirectly through a system bus 204 to achieve data transmission or interaction.

[0088] The memory 201 may be an information recording device based on any electronic, magnetic, optical or other physical principle, used to record execution instructions, data, etc. In some implementations, the memory 201 may be, but is not limited to, a volatile memory, a non-volatile memory, a storage drive, etc.

[0089] In some embodiments, the volatile memory may be a random access memory (RAM); in some embodiments, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable read-only memory (EEPROM), a flash memory, etc.; in some embodiments, the storage drive may be a disk drive, a solid-state drive, any type of storage disk (such as a CD, a DVD, etc.), or a similar storage medium, or a combination thereof, etc.

[0090] The communication unit 203 is used to send and receive data through a network. In some embodiments, the network may include a wired network, a wireless network, a fiber optic network, a telecommunication network, an intranet, the Internet, a local area network (LAN), a wide area network (WAN), a wireless local area network (WLAN), a metropolitan area network (MAN), a wide area network (WAN), a public switched telephone network (PSTN), a Bluetooth network, a ZigBee network, or a near field communication (NFC) network, or any combination thereof. In some embodiments, the network may include one or more network access points. For example, the network may include a wired or wireless network access point, such as a base station and / or a network switching node, through which one or more components of the service request processing system may be connected to the network to exchange data and / or information.

[0091] The processor 202 may be an integrated circuit chip having a signal processing capability, and the processor may include one or more processing cores (e.g., a single-core processor or a multi-core processor). By way of example only, the processor may include a central processing unit (CPU), an application specific integrated circuit (ASIC), an application specific instruction set processor (ASIP), a graphics processing unit (GPU), a physical processing unit (PPU), a digital signal processor (DSP), a field programmable gate array (FPGA), a programmable logic device (PLD), a controller, a microcontroller unit, a reduced instruction set computer (RISC), or a microprocessor, or any combination thereof.

[0092] Understandably, Figure 8 The structure shown is for illustration only. The test terminal may also have Figure 8 More or fewer components than shown, or with Figure 8 Different configurations are shown. Figure 8 The components shown may be implemented in hardware, software or a combination thereof.

[0093] It should be understood that the apparatus and method disclosed in the above-mentioned embodiments can also be implemented in other ways. The apparatus embodiments described above are merely schematic. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architecture, functions and operations of the apparatus, methods and computer program products according to the multiple embodiments of the present application. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of a code, and the module, a program segment or a part of a code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram and / or the flowchart, and the combination of boxes in the block diagram and / or the flowchart can be implemented with a dedicated hardware-based system that performs a specified function or action, or can be implemented with a combination of dedicated hardware and computer instructions.

[0094] The above are only various implementations of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A vehicle networking test system, characterized in that: The Internet of Vehicles test system includes a channel simulation system and a plurality of test terminals; The channel simulation system is a system that simulates the wireless communication environment in the physical world; The channel simulation system is used to establish a communication connection between each test terminal and at least the multiple terminals under test, and the stability of each test terminal is higher than the stability of the multiple terminals under test.

2. The vehicle networking test system according to claim 1, characterized in that: The channel simulation system includes one channel simulator or a plurality of cascaded channel simulators.

3. A vehicle networking testing method, characterized in that: The method is applied to a test terminal in a vehicle networking test system according to any one of claims 1 to 2, and the method comprises: Obtaining an inherent delay generated by a channel simulation system in the Internet of Vehicles test system; Determine a target transmission time of a transmission frame in a current test cycle according to the inherent time delay, wherein the target transmission time is before the standard synchronous transmission time, and the target transmission time differs from the standard synchronous transmission time by the inherent time delay; The transmit frame is transmitted at the target transmit time.

4. The vehicle networking testing method according to claim 3, characterized in that: After transmitting the transmission frame at the target transmission time, the method further includes: The start response frame in the current test cycle is received at the standard synchronous reception time.

5. The vehicle networking testing method according to claim 4, characterized in that: The test terminal operates in a time division duplex mode, the termination response frame in the current test cycle includes a plurality of symbols, and the method further includes: Remaining symbols except the last symbol in the termination response frame are received.

6. The vehicle networking testing method according to claim 5, characterized in that: The method further comprises: The transmission frame of the next test cycle is transmitted within the reception time of the last symbol.

7. The vehicle networking testing method according to claim 6, characterized in that: The transmission time of the next test cycle and the reception time of the last symbol satisfy the following relationship: Δ = T - Δtx - Δrx; In the formula, Δ represents the time difference between the transmission time of the next test cycle and the reception time of the last symbol, T represents the communication duration of the termination response frame, Δtx represents the inherent delay, and Δrx represents the reception delay of the start response frame.

8. A vehicle networking test device, characterized in that: A test terminal used in a vehicle networking test system according to any one of claims 1 to 2, the device comprising: A time adjustment module is used to obtain the inherent time delay generated by the channel simulation system in the vehicle networking test system; according to the inherent time delay, determine the target transmission time of the transmission frame in the current test cycle, wherein the target transmission time is before the standard synchronous transmission time, and the target transmission time differs from the standard synchronous transmission time by the inherent time delay; The data transceiver module is used to transmit the transmission frame at the target transmission time.

9. A storage medium, characterized in that: The storage medium stores a computer program, and when the computer program is executed by the processor, the vehicle network testing method described in any one of claims 3-7 is implemented.

10. A test terminal, characterized in that: The test terminal includes a processor and a memory, the memory stores a computer program, and when the computer program is executed by the processor, the vehicle networking test method described in any one of claims 3 to 7 is implemented.

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