Electrical interference test method and system

Abstract

Various embodiments described herein support or provide electrical interference testing, including establishing a communication session between an on-board unit and a roadside unit; generating a radio frequency signal to interfere with the communication session; detecting an interruption of the communication session at a frequency point associated with the radio frequency signal; determining that the interruption is caused by an uplink data transmission failure in the communication session; and adjusting the position of the road side unit or adjusting a filter for communication coupling between the road side unit and the related antenna so as to reestablish the communication session at the frequency point associated with the radio frequency signal.

Description

Technical Field

[0001] The present disclosure relates to systems and methods for electrical interference testing, and in particular, but not limited to, electrical interference testing of an on-board unit for electronic toll collection. Background Art

[0002] Electronic toll collection is widely used around the world. Electronic toll collection systems automatically collect tolls from vehicles that pass through specific roads, lanes or bridges. Electronic toll collection requires communication between the on-board unit and the roadside unit to exchange data including vehicle identification, location and distance traveled. On-board equipment, especially pre-installed on-board equipment, needs to pass electrical interference testing in some regions before it can be provided to automobile manufacturers. Challenges arise in the electrical interference testing of such on-board units, especially in identifying and analyzing communication failures that occur during testing. Summary of the invention

[0003] One embodiment provides a method, including establishing a communication session between an on-board unit and a roadside unit; generating a radio frequency (RF) signal to interfere with the communication session; detecting an interruption of the communication session at a frequency associated with the RF signal; determining that the interruption is caused by a failure of uplink data transmission in the communication session; and adjusting a position of the roadside unit to re-establish the communication session at the frequency associated with the RF signal.

[0004] In one embodiment of the method, it further includes determining a lobe area associated with an antenna that is communicatively coupled to a radio frequency generator that generates a radio frequency signal; determining that the position of the roadside unit is within the lobe area; and adjusting the position of the roadside unit to outside the lobe area based on the determination of the position of the roadside unit.

[0005] In one embodiment of the method, the method further includes configuring the roadside unit to operate at a power level corresponding to an intermediate point within a transmit power operating range associated with the roadside unit.

[0006] In one embodiment of the method, the uplink data transmission associated with the communication session corresponds to a data transmission from the on-board unit to the roadside unit.

[0007] In one embodiment of the method, the method further comprises adjusting the frequency of the radio frequency signal according to a predetermined operation mode.

[0008] In one embodiment of the method, the frequency range is between 200 MHz and 6 GHz.

[0009] In one embodiment of the method, the radio frequency signal is generated by a radio frequency signal generator, which is communicatively coupled to an antenna. The antenna is disposed within a housing that contains the onboard unit. The radio frequency signal generator is disposed outside the housing.

[0010] In one embodiment of the method, the antenna is a first antenna. The roadside unit is communicatively coupled to a second antenna. The antenna is disposed within the housing. The roadside unit is disposed outside the housing.

[0011] In one embodiment of the method, the interruption of the communication session includes the occurrence of one or more communication errors or a connection failure of the communication session.

[0012] One embodiment provides a method, including establishing a communication session between a first unit and a second unit; generating a radio frequency signal to interfere with the communication session; detecting an interruption of the communication session at a frequency associated with the radio frequency signal; determining that the interruption is caused by a failure of uplink data transmission in the communication session; determining that the frequency falls within a frequency range associated with the second unit; and adjusting a filter, the filter being communicatively coupled between the second unit and an antenna associated with the second unit, the filter being adjusted so that the communication session is reestablished at the frequency associated with the radio frequency signal. .

[0013] In one embodiment of the method, the filter is configured to partially or completely attenuate the strength of the radio frequency signal at the frequency point.

[0014] In one embodiment of the method, the filter is a high pass filter or a band pass filter.

[0015] In one embodiment of the method, the first unit is an on-board unit and the second unit is a roadside unit.

[0016] In one embodiment of the method, the method further includes determining a local oscillator associated with the second unit; determining a frequency range of the local oscillator; and determining the frequency range according to the frequency range of the local oscillator and a frequency point associated with the radio frequency signal.

[0017] One embodiment provides a system including a housing configured to contain a first unit; the first unit configured to be communicatively coupled to a second unit; the second unit configured outside the housing, the second unit including one or more high pass filters; and a radio frequency signal generator configured to generate a radio frequency signal to interfere with a communication session between the first unit and the second unit.

[0018] In one embodiment of the system, the first unit is an on-board unit and the second unit is a roadside unit.

[0019] In one embodiment of the system, the roadside unit may include a dedicated short range communication (DSRC) transceiver. The roadside unit may be installed, for example, along a road or a pedestrian walkway.

[0020] In one embodiment of the system, the enclosure includes a shielded room having absorptive material on an interior reflective surface, the enclosure providing an isolated electromagnetic compatibility test facility that simulates open field testing.

[0021] In one embodiment of the system, the first unit and the second unit are communicatively coupled to a monitor that provides data associated with the communication session.

[0022] In one embodiment of the system, the first unit is communicatively coupled to a first antenna, wherein the second unit is communicatively coupled to a second antenna, wherein the first antenna and the second antenna are configured within the housing. The first unit is configured within the housing. The second unit is configured outside the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In the drawings, which are not necessarily drawn to scale, like numbers may describe similar parts in different views. To facilitate identification of discussions of any particular element or behavior, the most significant digit in a reference number refers to the reference numeral in which the element is first introduced. Some embodiments are illustrated in the drawings by way of example and not limitation.

[0024] Figure 1 is a block diagram of an example system configured for electrical interference testing in accordance with various embodiments.

[0025] Figure 2 is a flow chart of an example method of electrical interference testing according to various embodiments.

[0026] Figure 3 is a flow chart of an example method of electrical interference testing according to various embodiments.

[0027] Figure 4 is a flow chart of an example method of electrical interference testing according to various embodiments.

[0028] Figure 5 is a block diagram illustrating a representative software architecture according to various embodiments, which may be used in conjunction with the various hardware architectures described herein.

[0029] Figure 6 is a block diagram illustrating machine components capable of reading instructions from a machine storage medium and performing any one or more of the methodologies discussed herein, according to various embodiments. DETAILED DESCRIPTION

[0030] The following description includes systems, methods, techniques, instruction sequences, and computer program products that embody illustrative embodiments of the present disclosure. In the following description, for the purpose of explanation, many specific details are listed to provide a thorough understanding of the embodiments. However, it is apparent to those skilled in the art that the subject matter of the present invention can be practiced without these specific details.

[0031] References in this specification to "one embodiment" or "an embodiment" mean that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the subject matter. Thus, the appearances of the phrases "in one embodiment" or "in various embodiments" in various places throughout the specification are not necessarily all referring to the same embodiment.

[0032] For ease of explanation, specific configurations and details are listed to provide a comprehensive understanding of the subject matter. However, it will be apparent to one of ordinary skill in the art that embodiments of the subject matter may be implemented without the specific details presented herein, or in various combinations, as described herein. In addition, well-known features may be omitted or simplified to avoid obscuring the described embodiments. In this description, various embodiments may be given. These are merely descriptions of specific embodiments. The scope or meaning of the claims is not limited to the embodiments given.

[0033] Electronic toll collection requires communication between the vehicle and the toll booth. Specifically, the OBU installed on the vehicle communicates with the roadside unit installed at the toll booth to exchange data, including vehicle identification, location, distance traveled, etc. OBUs, especially pre-installed OBUs, are required to pass electrical interference testing in some regions before they can be provided to automakers. Challenges arise during the electrical interference testing of such OBUs, especially in determining and avoiding false positive errors during the testing process.

[0034] The electrical interference test described herein is to test the interference resistance of the electronic components of the vehicle (such as the vehicle-mounted unit). The electronic components under the electrical interference test are subjected to electromagnetic interference generated inside the housing (e.g., a shielded housing with an absorbent lining). The device configured to communicate with the electronic components and / or peripherals can be configured inside or outside the shielded housing. In various embodiments, the electrical interference test method and system meet the general test conditions of the ISO 11452-1 standard.

[0035] In various embodiments, electromagnetic electrical disturbance interference (or electromagnetic interference) can be any electromagnetic phenomenon that can degrade the performance of a device, apparatus, or system. Electromagnetic interference (or electromagnetic disturbance) can be electromagnetic noise or a signal (such as a radio frequency signal).

[0036] Examples thereof include systems, methods, and non-transitory computer-readable media for data management, which facilitate electrical interference testing and identification and analysis of communication failures (or errors) that occur during testing. In various embodiments, a system includes a housing, an onboard unit (e.g., a first unit), a roadside unit (e.g., a second unit), and a radio frequency signal generator. The housing can be a shielded housing with an absorbent lining that is configured to include an onboard unit ("OBU"). The OBU can be configured to be communicatively coupled to a roadside unit ("RSU"). The RSU can be configured outside the housing. The RSU can include one or more high-pass filters and / or band-pass filters.

[0037] The RF signal generator may be configured to generate a RF signal to interfere with a communication session between the OBU and the RSU. In various embodiments, the RSU may include a dedicated short range communication (DSRC) transceiver. In various embodiments, the OBU and the RSU are communicatively coupled to a monitor that provides data associated with the communication session.

[0038] In various embodiments, the enclosure may be a shielded room having an absorbent material on an interior reflective surface of the shielded room. The enclosure is configured to provide an isolated electromagnetic compatibility test facility to simulate an openness test.

[0039] In various embodiments, the RSU is communicatively coupled to one antenna (e.g., a first antenna). The RF signal generator is communicatively coupled to another antenna (e.g., a second antenna). Both antennas are disposed within the housing. Figure 1 As shown, the RSU and the RF signal generator are configured outside the housing.

[0040] The embodiments illustrated in the accompanying drawings will now be described in detail. However, the present disclosure may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

[0041] Figure 1 1 is a block diagram showing an example system 100 for electrical interference testing configured in accordance with various embodiments. As shown, the system 100 includes a shielded enclosure 102, an RSU 112, a radio frequency (RF) generator 114, and a monitor 116. The shielded enclosure 102 includes a ground plane 104, an OBU 106, a first antenna 110, and a second antenna 108. The first antenna 110 is communicatively coupled to the RSU. The second antenna 108 is communicatively coupled to the RF generator 114.

[0042] In various embodiments, shielded enclosure 102 may be a shielded room with absorbent material on reflective surfaces (optionally excluding the floor) within the shielded room. The design goal is to attenuate the reflected energy of the test area to a certain decibel level compared to direct energy (eg, RF signals).

[0043] In various embodiments, during operation, the radiation pattern of the antenna (e.g., antenna 108, antenna 110) is displayed as a lobe pattern at different angles. Antenna 108 and antenna 110 may be directional antennas, the purpose of which is to transmit radio waves in one direction. The field strength of the main lobe (or main lobe area) is higher than that of other lobes (or lobe areas). Other lobes may be referred to as side lobes (or side lobe areas), representing areas with unwanted radiation in unwanted directions.

[0044] In various embodiments, the ground plane 104 may be made of copper, brass, or steel and have a certain size and thickness. The ground plane 104 may be bonded to the shielding shell 102 .

[0045] The OBU 106, or any device being tested for electrical interference, may be placed on the ground plane 104. In various embodiments, the OBU 106 may be placed on a non-conductive, low relative permittivity material above the ground plane 104.

[0046] The OBU 106 may be configured to communicate with the RSU 112 via the antenna 110 during electrical interference testing. The RSU 112 may be configured to be located outside the shielded enclosure 102. The RSU 112 may include one or more high pass filters and / or band pass filters (not shown).

[0047] The RF signal generator 114 may be configured to generate RF signals to interfere with communications (or communication sessions) between the OBU 106 and the RSU 112. In various embodiments, the RSU 112 may include a dedicated short range communication (DSRC) transceiver. In various embodiments, the OBU 106 and the RSU 112 are communicatively coupled to a monitor 116 that provides data associated with the communication session.

[0048] In various embodiments, shielded enclosure 102 may be a shielded room having absorbent material (not shown) on internal reflective surfaces. Shielded enclosure 102 is configured to provide an isolated electromagnetic compatibility test facility that simulates an open field test.

[0049] RSU 112 is communicatively coupled to antenna 110. RF signal generator 114 is communicatively coupled to antenna 108. Antennas 110 and 108 are both disposed within shielded housing 102. Figure 1As shown, the RSU 112, the RF signal generator 114, and the monitor 116 are configured outside the shielded housing 102. The monitor 116 can be communicatively coupled with an antenna that is configured to be located inside the shielded housing, specifically, between an antenna (not shown) configured in the OBU and the antenna 110 (communicatively coupled with the RSU 112).

[0050] Figure 2 2 is a flow chart of an example method 200 for electrical interference testing according to various embodiments. It is understood that, according to some embodiments, the method described herein may be performed by one or more machines. For example, the method 200 may be performed by referring to Figure 1 The system 100 described herein or its individual components are performed. The operations of the various methods described herein may be performed by one or more hardware processors (e.g., a central processing unit or a graphics processing unit) of a computing device (e.g., a desktop, a server, a laptop, a mobile phone, a tablet computer, etc.), which may become part of a computing system based on a cloud architecture. The example methods described herein may also be implemented in the form of executable instructions stored on a machine-readable medium or in the form of electronic circuits. For example, the operations of method 200 may be represented by executable instructions, which, when executed by a processor of a computing device, cause the computing device to execute method 200. According to the examples, the operations of the example methods described herein may be repeated in different ways or involve intermediate operations not shown. Although the operations of the example methods may be depicted and described in a certain order, the order in which the operations are performed may vary in various embodiments, including performing certain operations in parallel.

[0051] In operation 202, the system establishes a communication session between the OBU and the RSU.

[0052] In various embodiments, the system configures the RSU to operate at a power level corresponding to an intermediate point within a transmit power operating range associated with the RSU unit.

[0053] At operation 204, the system generates a radio frequency (RF) signal to interfere with the communication session for the purpose of electrical interference testing.

[0054] In various embodiments, during the electrical interference test, the system adjusts the frequency of the radio frequency signal according to a predetermined operating mode. The frequency range of the radio frequency signal may be between 200 MHz and 6 GHz.

[0055] At operation 206, the system detects an interruption of the communication session at a frequency associated with the radio frequency signal. The interruption of the communication session may include the occurrence of one or more communication errors or a connection failure of the communication session.

[0056] In operation 208, the system determines that the interruption is caused by an uplink data transmission failure in the communication session. The uplink data transmission associated with the communication session may correspond to a data transmission from the OBU to the RSU. Conversely, the downlink data transmission associated with the communication session may correspond to a data transmission from the RSU to the OBU.

[0057] In various embodiments, if an uplink data transmission fails resulting in an interruption, the system can determine that the interruption was not caused by the device under test (e.g., OBU). Specifically, the interruption is likely caused by the RSU, such as the RSU failing to receive data from the OBU. Such failures (also known as false positive errors) are typically caused by devices (or components) outside the test environment and / or the device under test.

[0058] Conversely, in various embodiments, if the system determines that the outage was caused by downlink data transmission from the RSU to the OBU, then the system may determine that the problem may be caused by the OBU, so that the OBU as a device under test may be problematic for the purpose of electromagnetic compatibility determination.

[0059] In operation 210, the system adjusts the position of the RSU (or adjusts the position of the RSU) so that the communication session is reestablished at the frequency point associated with the radio frequency signal.

[0060] Although not shown, method 200 may include an operation for displaying (or causing to be displayed) a graphical user interface for managing data by a hardware processor. For example, the operation may cause a computing device to display a graphical user interface to facilitate electrical interference testing. Such an operation for displaying a graphical user interface may be separate from operations 202 to 210, or may constitute a part of one or more of operations 202 to 210.

[0061] Figure 3 is a flow chart of an example method 300 for electrical interference testing according to various embodiments. It is understood that according to some embodiments, the method described herein may be performed by one or more machines. For example, the method 300 may be performed by referring to Figure 1The system 100 described herein or its individual components are performed. The operations of the various methods described herein can be performed by one or more hardware processors (e.g., a central processing unit or a graphics processing unit) of a computing device (e.g., a desktop, a server, a laptop, a mobile phone, a tablet computer, etc.), which can be part of a computing system based on a cloud architecture. The example methods described herein can also be implemented in the form of executable instructions stored on a machine-readable medium or in the form of electronic circuits. For example, the operations of method 300 can be represented by executable instructions that, when executed by a processor of a computing device, cause the computing device to perform method 300. According to different examples, the operations of the example methods described herein can be repeated in different ways or involve intervening operations that are not shown. Although the operations of the example methods can be depicted and described in a certain order, the order in which the operations are performed can vary in various embodiments, including performing certain operations in parallel.

[0062] At operation 302, the system identifies (or causes identification of) a lobe region, such as a main lobe region or a side lobe region as described herein, associated with an antenna communicatively coupled to a radio frequency generator that generates a radio frequency signal.

[0063] At operation 304, the system determines (or causes determination) that the location of the RSU is within the determined lobe area.

[0064] At operation 306, the system adjusts (or causes adjustment of) the position of the RSU based on the determination of the position of the RSU so that it is outside the determined lobe area. In various embodiments, after the position of the RSU is adjusted, the system configures (or fine-tunes) the RSU so that the communication session between the OBU and the RSU is reestablished at the frequency of the RF signal associated with the interruption.

[0065] Although not shown, method 300 may include an operation for displaying (or causing to be displayed) a graphical user interface for managing data by a hardware processor. For example, the operation may cause a computing device to display a graphical user interface to facilitate electrical interference testing. Such an operation for displaying a graphical user interface may be separate from operations 302 to 306, or may constitute a part of one or more of operations 302 to 306.

[0066] Figure 4 4 is a flow chart of an example method 400 for electrical interference testing according to various embodiments. It is understood that according to some embodiments, the method described herein may be performed by one or more machines. For example, the method 400 may be performed by referring to Figure 1The system 100 described herein or its individual components are performed. The operations of the various methods described herein may be performed by one or more hardware processors (e.g., a central processing unit or a graphics processing unit) of a computing device (e.g., a desktop, a server, a laptop, a mobile phone, a tablet computer, etc.), which may become part of a computing system based on a cloud architecture. The example methods described herein may also be implemented in the form of executable instructions stored on a machine-readable medium or in the form of electronic circuits. For example, the operations of method 400 may be represented by executable instructions that, when executed by a processor of a computing device, cause the computing device to execute method 400. According to the examples, the operations of the example methods described herein may be repeated in different ways or involve intervening operations that are not shown. Although the operations of the example methods may be depicted and described in a certain order, the order in which the operations are performed may vary in various embodiments, including performing certain operations in parallel.

[0067] In operation 402, the system establishes a communication session between the OBU and the RSU.

[0068] In various embodiments, the system configures the RSU to operate at a power level corresponding to a midpoint within a transmit power operating range associated with the RSU unit.

[0069] At operation 404, the system generates a radio frequency (RF) signal to interfere with the communication session for the purpose of electrical interference testing.

[0070] In various embodiments, during the electrical interference test, the system adjusts the frequency of the radio frequency signal according to a predetermined operating mode. The frequency range of the radio frequency signal may be between 200 MHz and 6 GHz.

[0071] At operation 406, the system detects a disruption in the communication session at a frequency associated with the radio frequency signal.

[0072] In operation 408, the system determines that the interruption is caused by an uplink data transmission failure in the communication session. The uplink data transmission associated with the communication session may correspond to a data transmission from the OBU to the RSU. Conversely, the downlink data transmission associated with the communication session may correspond to a data transmission from the RSU to the OBU.

[0073] In various embodiments, if an uplink data transmission fails resulting in an interruption, the system can determine that the interruption was not caused by the device under test (e.g., OBU). Specifically, the interruption is likely caused by the RSU, such as the RSU failing to receive data from the OBU. Such failures (also known as false positive errors) are typically caused by devices (or components) outside the test environment and / or the device under test.

[0074] Conversely, in various embodiments, if the system determines that the outage was caused by downlink data transmission from the RSU to the OBU, then the system may determine that the problem may be caused by the OBU, so that the OBU as a device under test may be problematic for the purpose of electromagnetic compatibility determination.

[0075] At operation 410, the system determines (or causes a determination) that the frequency point falls within an intermediate frequency range associated with the RSU.

[0076] In various embodiments, the system identifies a local oscillator associated with the RSU and determines an intermediate frequency range of the local oscillator. The intermediate frequency range can be determined based on the frequency range of the local oscillator and the frequency of the RF signal associated with the outage.

[0077] At operation 412, the system adjusts a filter that is communicatively coupled between the RSU and an antenna associated with the RSU. The adjustment of the filter may allow the communication session between the OBU and the RSU to be reestablished at the frequency of the RF signal associated with the interruption.

[0078] In various embodiments, the filter is configured to partially or completely attenuate the strength of the radio frequency signal at a frequency associated with the outage. The filter may be a high pass filter or a band pass filter.

[0079] Although not shown, method 400 may include an operation for displaying (or causing to be displayed) a graphical user interface for managing data by a hardware processor. For example, the operation may cause a computing device to display a graphical user interface to facilitate electrical interference testing. The operation for displaying a graphical user interface may be separate from operations 402 to 412, or may constitute a part of one or more of operations 402 to 412.

[0080] Figure 5 is a block diagram illustrating an example of a software architecture 502 that may be installed on a machine according to some embodiments. Figure 5 This is only a non-limiting example of a software architecture, and it is understood that many other architectures can also achieve the functionality described herein. The software architecture 502 can be used in a variety of applications such as Figure 6 Executed on hardware such as a machine 600, which includes a processor 610, a memory 630, and an input / output (I / O) component 650. A representative hardware layer 504 is shown, which may represent, for example Figure 6600. Representative hardware layer 504 includes one or more processing units 506, with associated executable instructions 508. Executable instructions 508 represent executable instructions of software architecture 502. Hardware layer 504 also includes memory or storage modules 510, which also have executable instructions 508. Hardware layer 504 may also include other hardware 512, which represents any other hardware of hardware layer 504, such as other hardware shown as part of machine 600.

[0081] exist Figure 5 In the example architecture of , software architecture 502 can be conceptualized as a stack of layers, where each layer provides specific functionality. For example, software architecture 502 may include layers such as operating system 514, library 516, framework / middleware 518, application 520, and presentation layer 544. In operation, application 520 or other components within each layer may call API call 524 through the software stack and receive a response, return value, etc. (illustrated as message 526) in response to API call 524. The illustrated layers are representative in nature, and not all software architectures have all layers. For example, some mobile or special-purpose operating systems may not provide a framework / middleware 518 layer, while other operating systems may provide such a layer. Other software architectures may include additional or different layers.

[0082] The operating system 514 can manage hardware resources and provide common services. The operating system 514 can include, for example, a kernel 528, services 530, and drivers 532. The kernel 528 can serve as an abstraction layer between the hardware and other software layers. For example, the kernel 528 can be responsible for memory management, processor management (e.g., scheduling), component management, networking, security settings, etc. Services 530 can provide other common services to other software layers. Drivers 532 can be responsible for controlling or interfacing with the underlying hardware. For example, drivers 532 can include display drivers, camera drivers, drivers, flash memory drivers, serial communication drivers (e.g., Universal Serial Bus (USB) drivers), Drivers, audio drivers, power management drivers, etc., depending on the hardware configuration.

[0083] The library 516 may provide a common infrastructure that may be utilized by the application 520 and / or other components and / or layers. The functions generally provided by the library 516 allow other software modules to perform tasks in an easier manner than directly interfacing with the underlying operating system 514 functions (e.g., kernel 528, service 530, or driver 532). The library 516 may include a system library 534 (e.g., a C standard library), which may provide functions such as memory allocation functions, string manipulation functions, mathematical functions, and the like. In addition, the library 516 may include an API library 536, such as a media library (e.g., a library that supports the presentation and manipulation of various media formats, such as MPEG4, H.264, MP3, AAC, AMR, JPG, and PNG), a graphics library (e.g., an OpenGL framework that may be used to render 2D and 3D graphics content on a monitor), a database library (e.g., SQLite that may provide various relational database functions), a network library (e.g., WebKit that may provide network browsing functions), and the like. The library 516 may also include a variety of other libraries 538 to provide many other APIs to the application 520 and other software components / modules.

[0084] Framework 518 (sometimes also referred to as middleware) can provide a higher level common infrastructure that can be utilized by application 520 or other software components / modules. For example, framework 518 can provide various graphical user interface functions, advanced resource management, advanced location services, etc. Framework 518 can provide a wide range of other APIs that can be utilized by application 520 and / or other software components / modules, some of which may be specific to a particular operating system or platform.

[0085] Applications 520 include built-in applications 540 and / or third-party applications 542. Representative examples of built-in applications 540 may include, but are not limited to, a home application, a contact application, a browser application, a book reader application, a location application, a media application, a messaging application, or a game application.

[0086] Third-party applications 542 may include any of the built-in applications 540, as well as a variety of other applications. In a specific example, third-party applications 542 (e.g., applications created by entities other than the vendor of a particular platform using Android TM or iOS TM Software Development Kit (SDK) can be used to develop applications on mobile operating systems such as iOS TM 、Android TMOr mobile software running on other mobile operating systems. In this example, third-party application 542 can call API call 524 provided by mobile operating system such as operating system 514 to facilitate the functions described herein.

[0087] Applications 520 may utilize built-in operating system functionality (e.g., kernel 528, services 530, or drivers 532), libraries (e.g., system libraries 534, API libraries 536, and other libraries 538), or framework / middleware 518 to create a user interface to interact with a user of the system. Alternatively, or additionally, in some systems, interaction with the user may occur through a presentation layer, such as presentation layer 544. In these systems, the "logic" of the application / module may be separated from the application / module's interaction with the user.

[0088] Some software architectures make use of virtual machines. Figure 5 The example of FIG. 5 shows a virtual machine 548. The virtual machine 548 creates a software environment where applications / modules can be run as if they were on a hardware machine (e.g., Figure 6 The virtual machine 548 is hosted by a host operating system (e.g., operating system 514) and typically (although not always) has a virtual machine monitor 546 that manages the operation of the virtual machine 548 and the interface with the host operating system (e.g., operating system 514). Software architecture is executed within the virtual machine 548, such as an operating system 550, libraries 552, framework / middleware 554, applications 556, or presentation layer 558. These layers of the software architecture executed within the virtual machine 548 can be the same as the corresponding layers described previously, or they can be different.

[0089] Figure 6 A schematic diagram of a machine 600 in the form of a computer system is shown, within which a set of instructions may be executed to cause the machine 600 to perform any one or more of the methods discussed herein, according to one example. Figure 6 A schematic diagram of a machine 600 in the example form of a computer system is shown within which instructions 616 (e.g., software, programs, applications, applets, applications, or other executable code) may be executed to cause the machine 600 to perform any one or more of the methodologies discussed herein. For example, the instructions 616 may cause the machine 600 or one or more of the machines 600 to perform the methodologies discussed above with respect to Figure 2 The method 200 described above Figure 3 The method 300 and the above Figure 4The method 400 described. Instructions 616 convert a general, non-programmed machine 600 into a specific machine 600 that is programmed to perform the functions described and illustrated in the described manner. In some embodiments, the machine 600 operates as a standalone device, or can be coupled to other machines (e.g., networked). In a networked deployment, the machine 600 can operate as a server machine or a client machine in a server-client network environment, or as a peer machine in a peer-to-peer (or distributed) network environment. The machine 600 may include, but is not limited to, a server computer, a client computer, a personal computer (PC), a tablet computer, a laptop computer, a netbook, a personal digital assistant (PDA), an entertainment media system, a cellular phone, a smart phone, a mobile device, or any machine capable of executing instructions 616 specifying actions taken by the machine 600 in sequence or otherwise. In addition, although only one machine 600 is described, the term "machine" should also be deemed to include a collection of machines 600 that execute instructions 616 individually or jointly to perform any one or more methods discussed herein.

[0090] Machine 600 may include processor 610, memory 630, and I / O components 650, which may be configured to communicate with each other, such as via bus 602. In one example, processor 610 (e.g., a hardware processor such as a central processing unit (CPU), a reduced instruction set computing (RISC) processor, a complex instruction set computing (CISC) processor, a graphics processing unit (GPU), a digital signal processor (DSP), an application specific integrated circuit (ASIC), a radio frequency integrated circuit (RFIC), another processor, or any suitable combination thereof) may include, for example, processor 612 and processor 614 that may execute instructions 616. The term "processor" is intended to include multi-core processors, which may include two or more independent processors (sometimes referred to as "cores") that may execute instructions simultaneously. Although Figure 6 Multiple processors 610 are shown, but machine 600 may include a single processor with a single core, a single processor with multiple cores (e.g., a multi-core processor), multiple processors with a single core, multiple processors with multiple cores, or any combination thereof.

[0091] The memory 630 may include a main memory 632, a static memory 634, and a storage unit 636 including a machine-readable medium 638, each of which may be accessed by the processor 610, for example, via the bus 602. The main memory 632, the static memory 634, and the storage unit 636 store instructions 616 that embody any one or more of the methods or functions described herein. The instructions 616 may also reside, in whole or in part, within the main memory 632, within the static memory 634, within the storage unit 636, within at least one processor 610 (e.g., within a processor's cache), or any suitable combination thereof during execution by the machine 600.

[0092] I / O components 650 may include a wide variety of components to receive input, provide output, generate output, transmit information, exchange information, capture measurements, etc. The specific I / O components 650 included in a particular machine will depend on the type of machine. For example, a portable machine such as a mobile phone will likely include a touch input device or other such input mechanism, while a headless server machine will likely not include such a touch input device. It will be appreciated that I / O components 650 may include many other components that are not necessarily identical to the components described above. Figure 6 650 is grouped according to function only to simplify the following discussion, and the grouping is by no means limiting. In various embodiments, the I / O component 650 may include an output component 652 and an input component 654. The output component 652 may include a visual component (e.g., a monitor such as a plasma display panel (PDP), a light emitting diode (LED) monitor, a liquid crystal monitor (LCD), a projector, or a cathode ray tube (CRT)), an acoustic component (e.g., a speaker), a tactile component (e.g., a vibration motor, a resistance mechanism), other signal generators, etc. The input component 654 may include an alphanumeric input component (e.g., a keyboard, a touch screen configured to receive alphanumeric input, an optical keyboard, or other alphanumeric input component), a point-based input component (e.g., a mouse, a touch pad, a trackball, a joystick, a motion sensor, or other pointing tool), a tactile input component (e.g., a physical button, a touch screen that provides the location and / or force of a touch or touch gesture, or other tactile input components), an audio input component (e.g., a microphone), and the like.

[0093] In further examples, the I / O components 650 may include a biometric component 656, a motion component 658, an environmental component 660, or a position component 662, among other various components. The motion component 658 may include an acceleration sensor component (e.g., an accelerometer), a gravity sensor component, a rotation sensor component (e.g., a gyroscope), etc. The environmental component 660 may include, for example, an illumination sensor component (e.g., a photometer), a temperature sensor component (e.g., one or more thermometers that detect ambient temperature), a humidity sensor component, a pressure sensor component (e.g., a barometer), a sound sensor component (e.g., one or more microphones that detect background noise), a proximity sensor component (e.g., an infrared sensor that detects nearby objects), a gas sensor (e.g., a gas detection sensor that detects dangerous gas concentrations for safety or measures pollutants in the atmosphere), or other components that can provide indications, measurements, or signals corresponding to the surrounding physical environment. The position component 662 may include a position sensor component (e.g., a global positioning system (GPS) receiver component), an altitude sensor component (e.g., an altimeter or barometer that detects air pressure, from which altitude can be derived), an orientation sensor component (e.g., a magnetometer), and the like.

[0094] Communication can be achieved using a variety of technologies. I / O components 650 may include a communication component 664 operable to couple machine 600 to network 680 or device 670 via coupling 682 and coupling 672, respectively. For example, communication component 664 may include a network interface component or another suitable device to interface with network 680. In further examples, communication component 664 may include a wired communication component, a wireless communication component, a cellular communication component, a near field communication (NFC) component, Components (e.g., low power ), Components, and other communication components to provide communication by other means. Device 670 can be another machine or any of a variety of peripheral devices (e.g., a peripheral device coupled via USB).

[0095] In addition, the communication component 664 can detect an identifier or include a component operable to detect an identifier. For example, the communication component 664 can include a radio frequency identification (RFID) tag reader component, an NFC smart tag detection component, an optical reader component (e.g., an optical sensor that detects one-dimensional bar codes such as universal product codes (UPC) bar codes, multi-dimensional bar codes such as Quick Response (QR) codes, Aztec codes, Data Matrix, Dataglyph, MaxiCode, PDF417, Ultra Code, UCC RSS-2D bar codes, and other optical codes), or a sound detection component (e.g., a microphone for identifying a tag audio signal). In addition, various information can be obtained through the communication component 664, such as a location located via Internet Protocol (IP) geolocation, a location detected via Signal triangulation of location, by detecting the location of NFC beacon signals that may indicate a specific location, etc.

[0096] Certain examples are described herein as including logic or some components, modules, elements, or mechanisms. Such modules may constitute software modules (e.g., code embodied on a machine-readable medium or in a transmission signal) or hardware modules. A "hardware module" is a tangible unit capable of performing certain operations and may be configured or arranged in some physical manner. In various embodiments, one or more computer systems (e.g., stand-alone computer systems, client computer systems, or server computer systems) or one or more hardware modules of a computer system (e.g., a processor or a group of processors) are configured by software (e.g., an application or a portion of an application) as hardware modules, the operation of which performs certain operations described herein.

[0097] In various embodiments, hardware modules are implemented mechanically, electronically, or any suitable combination thereof. For example, a hardware module may include dedicated circuits or logic that are permanently configured to perform certain operations. For example, a hardware module may be a special-purpose processor, such as a field programmable gate array (FPGA) or an ASIC. A hardware module may also include programmable logic or circuits that are temporarily configured by software to perform certain operations. For example, a hardware module may include software contained in a general-purpose processor or other programmable processor. It will be appreciated that the decision to implement a hardware module mechanically, in a dedicated and permanently configured circuit, or in a temporarily configured circuit (e.g., configured by software), may be driven by cost and time considerations.

[0098] Thus, the phrase "module" should be understood to include a tangible entity, whether physically constructed, permanently configured (e.g., hardwired), or temporarily configured (e.g., programmed) to operate in a certain manner or perform certain operations described herein. Considering the example of a hardware module being temporarily configured (e.g., programmed), each of the hardware modules need not be configured or instantiated at any one time. For example, in the case where the hardware module includes a general-purpose processor that is configured as a special-purpose processor by software, the general-purpose processor can be configured as different special-purpose processors (e.g., including different hardware modules) at different times. Software can configure one or more specific processors accordingly, for example, to constitute a specific hardware module at one time and another different hardware module at another time.

[0099] Hardware modules can provide information to other hardware modules and can also receive information from other hardware modules. Therefore, the hardware modules can be regarded as communicatively coupled. In the case where multiple hardware modules exist at the same time, communication can be achieved by signal transmission between two or more hardware modules (for example, through appropriate circuits and buses). In an example where multiple hardware modules are configured or instantiated at different times, for example, communication between these software modules can be achieved by storing and retrieving information in a memory structure accessible to multiple software modules. For example, a hardware module performs an operation and stores the output of the operation in a storage device that is communicatively coupled to it. Then, another hardware module can access the storage device at a later time to retrieve and process the stored output. Hardware modules can also initiate communication with input or output devices and can operate on a resource (for example, a collection of information).

[0100] The various operations of the example methods described herein may be performed, at least in part, by one or more processors that are temporarily configured (e.g., by software) or permanently configured to perform the relevant operations. Such processors, whether temporarily or permanently configured, constitute processor-implemented modules that operate to perform one or more operations or functions described herein. As used herein, "processor-implemented module" refers to a hardware module implemented using one or more processors.

[0101] Likewise, the methods described herein may be at least partially implemented by a processor, where a particular one or more processors are an example of hardware. For example, at least some of the operations of a method may be performed by one or more processors or processor-implemented modules. In addition, one or more processors may also be run in a "cloud computing" environment or as "software as a service" (SaaS) to support the execution of related operations. For example, at least some of the operations may be performed by a group of computers (as an example of a machine 600 including a processor 610), which may be accessed over a network (e.g., the Internet) and through one or more appropriate interfaces (e.g., APIs). In some examples, a client device may relay or communicate operations with a cloud computing system and may access circuit design information in a cloud environment.

[0102] The execution of certain operations may be distributed among processors, not only residing within a single machine 600, but also deployed on several machines 600. In some examples, the processor 610 or processor-implemented modules are located in a single geographic location (e.g., in a home environment, an office environment, or a server farm). In other examples, the processor or processor-implemented modules are distributed across several geographic locations. Executable instructions and machine storage media

[0103] Various memories (i.e., 630, 632, 634 and / or the memory of processor 610) and / or storage unit 636 may store one or more sets of instructions 616 and data structures (e.g., software) that embody or utilize any one or more of the methods or functions described herein. These instructions (e.g., instructions 616), when executed by processor 610, cause various operations to implement the disclosed embodiments.

[0104] As used herein, the terms "machine storage medium," "device storage medium," and "computer storage medium" have the same meaning and are used interchangeably. These terms refer to a single or multiple storage devices and / or media (e.g., centralized or distributed databases, and / or associated caches and servers) that store executable instructions 616 and / or data. Thus, these terms should be considered to include, but are not limited to, solid-state memory and optical and magnetic media, including memory internal or external to the processor. Specific examples of machine storage medium, computer storage medium, and / or device storage medium include nonvolatile memory, including, for example, semiconductor memory devices such as erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), FPGAs, and flash memory devices; magnetic disks, such as internal hard disks and removable disks; magneto-optical disks; and CD-ROM and DVD-ROM disks. The terms "machine storage medium," "computer storage medium," and "device storage medium" expressly exclude carrier waves, modulated data signals, and other such media, at least some of which are covered by the term "signal media" discussed below. Transmission medium

[0105] In various embodiments, one or more portions of network 680 may be an ad hoc network, an intranet, an extranet, a virtual private network (VPN), a local area network, a wireless local area network (WLAN), a wide area network, a wireless wide area network (WWAN), a metropolitan area network (MAN), the Internet, a portion of the Internet, a portion of a public switched telephone network (PSTN), a plain old telephone service (POTS) network, a cellular telephone network, a wireless network, 680 or a portion of network 680 may include a wireless or cellular network, and coupling 682 may be a code division multiple access (CDMA) connection, a global system for mobile communications (GSM) connection, or another type of cellular or wireless coupling. In this example, coupling 682 may implement any of various types of data transmission technologies, such as single carrier radio transmission technology (1xRTT), evolution-data optimized (EVDO) technology, general packet radio service (GPRS) technology, GSM Evolution Enhanced Data Rates (EDGE) technology, third generation partnership project (3GPP) including 3G, fourth generation wireless (4G) network, universal mobile telecommunications system (UMTS), high speed packet access (HSPA), world wide interoperability for microwave access (WiMAX), long term evolution (LTE) standards, other standards defined by various standards development organizations, other remote protocols, or other data transmission technologies.

[0106] Instructions can be transmitted or received over a network using a transmission medium through a network interface device (e.g., a network interface component included in a communication component) and utilizing any of a number of well-known transmission protocols (e.g., Hypertext Transfer Protocol (HTTP)). Similarly, instructions can be transmitted or received to device 670 using a transmission medium through a coupling (e.g., a peer-to-peer coupling). The terms "transmission medium" and "signal medium" have the same meaning and can be used interchangeably in this disclosure. The terms "transmission medium" and "signal medium" should be deemed to include any intangible medium that is capable of storing, encoding, or carrying instructions for machine execution, and include digital or analog communication signals or other intangible media to facilitate the communication of such software. Therefore, the terms "transmission medium" and "signal medium" should be deemed to include any form of modulated data signals, carrier waves, etc. The term "modulated data signal" refers to a signal that has one or more of its characteristics set or changed in such a manner as to encode information in the signal. Computer readable medium

[0107] The terms "machine-readable medium," "computer-readable medium," and "device-readable medium" have the same meaning and are used interchangeably in this disclosure. These terms are defined to include both machine storage media and transmission media. Thus, these terms include both storage devices / media and carrier / modulated data signals. For example, an example described herein may be implemented using non-transitory media (e.g., non-transitory computer-readable media). example

[0108] The following examples describe various embodiments of the methods, machine-readable media, and systems (eg, machines, devices, or other apparatuses) discussed herein.

[0109] Example 1. A method comprising: Establishing a communication session between the OBU and the RSU; Generates radio frequency (RF) signals to interfere with communications sessions; detecting an interruption of a communication session at a frequency associated with the radio frequency signal; determining that the interruption was caused by a failure of uplink data transmission in the communication session; and The position of the roadside unit is adjusted to re-establish the communication session at a frequency associated with the radio frequency signal.

[0110] Example 2, based on the method of Example 1, further includes: determining a lobe region associated with an antenna communicatively coupled to a radio frequency generator that generates a radio frequency signal; Determining that the position of the roadside unit is within the lobe area; and On the basis of determining the position of the roadside unit, the position of the roadside unit is adjusted to be outside the lobe area.

[0111] Example 3, based on any of the above examples, further includes: The roadside unit is configured to operate at a power level that corresponds to a midpoint within a transmit power operating range associated with the roadside unit.

[0112] Example 4, based on any of the preceding examples, wherein the uplink data transmission associated with the communication session corresponds to data transmission from the onboard unit to the roadside unit.

[0113] Example 5, based on any of the above examples, further includes: The frequency of the radio frequency signal is adjusted according to a predetermined operation mode.

[0114] Example 6, based on any of the preceding examples, wherein the frequency range is between 200 MHz and 6 GHz.

[0115] Example 7, based on any of the preceding examples, wherein the RF signal is generated by an RF signal generator, the RF signal generator is communicatively coupled to an antenna, the antenna is configured within a housing including the vehicle-mounted unit, and the RF signal generator is configured outside the housing.

[0116] Example 8: Based on any of the above examples, the antenna is a first antenna, the roadside unit is communicatively coupled to a second antenna, the antenna is configured inside the housing, and the roadside unit is configured outside the housing.

[0117] Example 9, based on the method of the above-mentioned Example 1, wherein the interruption of the communication session includes the occurrence of one or more communication errors or the failure of the communication session connection, and wherein the on-board unit includes an antenna configured in the on-board unit.

[0118] Example 10: A method comprising: establishing a communication session between the first unit and the second unit; generating a radio frequency signal to interfere with the communication session; detecting an interruption of the communication session at a frequency associated with the radio frequency signal; determining that the interruption was caused by a failure of uplink data transmission in the communication session; Determining that the frequency point falls within a frequency range associated with the second unit; and A filter is adjusted, the filter being communicatively coupled between the second unit and an antenna associated with the second unit, the filter being adjusted such that the communication session is reestablished at the frequency associated with the radio frequency signal.

[0119] Example 11, based on the method of Example 10, wherein the filter is configured to partially or completely attenuate the strength of the radio frequency signal at a frequency point.

[0121] Example 12, based on any of the preceding examples, wherein the filter is a high pass filter or a band pass filter.

[0123] Example 13, based on any of the preceding examples, wherein the first unit is an on-board unit and the second unit is a roadside unit.

[0124] Example 14, based on any of the above examples, further includes: determining a local oscillator associated with the second unit; determining a frequency range of a local oscillator; and The frequency range is determined based on the frequency range of the local oscillator and the frequency point associated with the radio frequency signal.

[0125] Example 15: A system includes: a housing configured to contain a first unit; A first unit configured to be communicatively coupled to a second unit; a second unit disposed outside the housing, the second unit comprising one or more high pass filters; and A radio frequency signal generator is configured to generate a radio frequency signal to interfere with the communication session between the first unit and the second unit.

[0126] Example 16, based on the system of Example 15, the first unit is a vehicle-mounted unit and the second unit is a roadside unit.

[0127] Example 17, based on the system of Example 16 above, wherein the roadside unit is a dedicated short range communication (DSRC) transceiver.

[0128] Example 18, based on any of the preceding examples, wherein the enclosure includes a shielded room having an absorbent material on an internal reflective surface, the enclosure providing an isolated electromagnetic compatibility test facility simulating an open field test.

[0129] Example 19, based on any of the preceding examples, wherein the first unit and the second unit are communicatively coupled to a monitor that provides data associated with the communication session.

[0130] Example 20, based on any of the preceding examples, wherein the first unit is communicatively coupled to the first antenna, wherein the second unit is communicatively coupled to the second antenna, wherein the first antenna and the second antenna are configured in the housing, wherein the first unit is configured within the housing, and the second unit is configured outside the housing, wherein the first unit includes a third antenna configured inside the first unit, and the monitor is communicatively coupled to a fourth antenna, wherein the fourth antenna is configured within the housing and between the second antenna and the third antenna.

[0131] In this specification, multiple instances may implement resources, components, operations, or structures described as a single instance. Although the individual operations of one or more methods are illustrated and described as separate operations, one or more separate operations may be performed simultaneously, and nothing requires that the operations be performed in the order in which they are described. Structures and functions presented as separate components in the example configuration may be implemented as combined structures or components. Similarly, structures and functions presented as single components may be implemented as separate components.

[0132] As used herein, the term "or" may be understood in an inclusive or exclusive sense. In some cases, the presence of broadening words and phrases such as "one or more," "at least," "but not limited to," or other similar phrases should not be understood as intending or requiring a narrower context where such broadening phrases may be absent. In addition, the boundaries between various resources, operations, modules, engines, and data stores are somewhat arbitrary, and particular operations are described in the context of specific illustrative configurations. Other allocations of functionality are contemplated and may fall within the scope of the various embodiments. Accordingly, the specification and drawings should be viewed in an illustrative rather than a restrictive sense.

[0133] It is understood that the disclosed embodiments may be changed and modified without departing from the scope of the present disclosure. These and other changes or modifications are intended to be included within the scope of the present disclosure.

Claims

1. A method, characterized in that include: Establishing a communication session between the OBU and the RSU; generating a radio frequency signal to interfere with the communication session; detecting an interruption of the communication session at a frequency associated with the radio frequency signal; determining that the interruption was caused by a failure of uplink data transmission in the communication session; as well as The position of the roadside unit is adjusted to re-establish the communication session at a frequency associated with the radio frequency signal.

2. The method according to claim 1, characterized in that Further including: determining a lobe region associated with an antenna communicatively coupled to a radio frequency generator that generates the radio frequency signal; Determining that the position of the roadside unit is within the lobe area; as well as On the basis of determining the position of the roadside unit, the position of the roadside unit is adjusted to be outside the lobe area.

3. The method according to claim 1, characterized in that Further including: The roadside unit is configured to operate at a power level corresponding to a midpoint within a transmit power operating range associated with the roadside unit.

4. The method according to claim 1, characterized in that: The uplink data transmission associated with the communication session corresponds to a data transmission from the onboard unit to the roadside unit.

5. The method according to claim 1, characterized in that Further including: The frequency of the radio frequency signal is adjusted according to a predetermined operation mode.

6. The method according to claim 5, characterized in that The frequency range is between 200 MHz and 6 GHz.

7. The method according to claim 1, characterized in that The radio frequency signal is generated by a radio frequency signal generator, which is communicatively coupled to an antenna, the antenna is disposed within a housing including the vehicle-mounted unit, and the radio frequency signal generator is disposed outside the housing.

8. The method according to claim 7, characterized in that The antenna is a first antenna, the roadside unit is communicatively coupled to a second antenna, the antenna is configured inside the housing, and the roadside unit is configured outside the housing.

9. The method according to claim 1, characterized in that: The interruption of the communication session includes the occurrence of one or more communication errors or a connection failure of the communication session, and wherein the on-board unit includes an antenna configured within the on-board unit.

10. A method, characterized in that include: establishing a communication session between the first unit and the second unit; generating a radio frequency signal to interfere with the communication session; detecting an interruption of the communication session at a frequency associated with the radio frequency signal; determining that the interruption was caused by a failure of uplink data transmission in the communication session; Determining that the frequency point falls within a frequency range associated with the second unit; and A filter is adjusted, the filter being communicatively coupled between the second unit and an antenna associated with the second unit, the filter being adjusted such that the communication session is reestablished at the frequency associated with the radio frequency signal.

11. The method according to claim 10, characterized in that The filter is configured to partially or completely attenuate the strength of the radio frequency signal at the frequency point.

12. The method according to claim 10, characterized in that The filter is a high pass filter or a band pass filter.

13. The method according to claim 10, characterized in that The first unit is an on-board unit, and the second unit is a roadside unit.

14. The method according to claim 10, characterized in that Further including: determining a local oscillator associated with the second unit; determining a frequency range of the local oscillator; as well as The frequency range is determined according to the frequency range of the local oscillator and a frequency point associated with the radio frequency signal.

15. A system, characterized in that include: a housing configured to contain a first unit; The first unit is configured to be communicatively coupled to the second unit; the second unit is configured to be located outside the housing, the second unit comprising one or more high pass filters; as well as A radio frequency signal generator is configured to generate a radio frequency signal to interfere with the communication session between the first unit and the second unit.

16. The system according to claim 15, characterized in that The first unit is an on-board unit, and the second unit is a roadside unit.

17. The system according to claim 16, characterized in that The roadside unit is a dedicated short range communication (DSRC) transceiver.

18. The system according to claim 15, characterized in that The enclosure includes a shielded room with absorptive material on an interior reflective surface, and provides an isolated electromagnetic compatibility test facility that simulates open field testing.

19. The system according to claim 15, characterized in that The first unit and the second unit are communicatively coupled to a monitor that provides data associated with the communication session.

20. The system according to claim 19, characterized in that The first unit is communicatively coupled to a first antenna, wherein the second unit is communicatively coupled to a second antenna, wherein the first antenna and the second antenna are configured in the housing, wherein the first unit is configured within the housing, and the second unit is configured outside the housing, wherein the first unit includes a third antenna configured inside the first unit, and the monitor is communicatively coupled to a fourth antenna, which is configured within the housing and between the second antenna and the third antenna.

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