Space loss testing method and device based on elevator signal coverage scene

Abstract

The invention discloses a space loss testing method and device based on an elevator signal coverage scene, and relates to the field of elevator signal testing or other related technical fields, and the method comprises the following steps: a modulation signal transmitting step: transmitting a modulation signal after a first device and a second device are detected to be initialized; controlling the first equipment to configure a space loss test parameter, and controlling the first equipment to continuously transmit a modulation signal containing the configuration parameter; a signal demodulation step: controlling the second device to demodulate the modulated signal obtained by scanning, obtaining the configuration parameter of the first device, and adjusting the self configuration parameter to be synchronized with the configuration parameter of the first device; and repeating the modulation signal emission step and the signal demodulation step for a preset number of times in different configuration states so as to test the multi-band space loss value. The technical problems that in the prior art, space loss in an elevator scene cannot be accurately measured, and the customer satisfaction degree is reduced are solved.

Description

Technical Field

[0001] The present invention relates to the field of elevator signal testing technology or other related fields, and in particular to a space loss testing method and device based on an elevator signal coverage scenario. Background Art

[0002] The acceleration of digitalization has necessitated full mobile network coverage in elevators. As densely populated and highly mobile spaces within large buildings, elevator signal coverage quality directly impacts user experience and safety. However, elevator signal coverage faces uncertainties due to spatial loss, a factor stemming from the unique structure of elevators and the complexity of signal transmission. Spatial loss, or the attenuation of signals propagating through air due to diffusion and dielectric properties, is crucial to the design and optimization of elevator signal coverage.

[0003] When building elevator signal coverage, related technologies often rely on empirical estimates or the use of RFID technology to assess penetration loss. For empirical estimates, because actual construction scenarios vary widely, and the shielding properties of elevator equipment from different manufacturers and models also vary significantly, the estimated spatial loss accuracy is poor, and the post-construction results also vary greatly. RFID technology, or radio frequency identification technology, places an RFID tag on the top of the elevator car, uses a frequency scanner terminal to send an RFID activation signal, and calculates the spatial link loss by adjusting the signal power until the tag's response signal disappears. However, this method is not only inefficient, but the test accuracy is affected by the performance of the RFID equipment, and it cannot meet the requirements of multi-band spatial loss testing. This limits the rationality of the construction plan, makes signal coverage quality unreliable, and makes cost control difficult.

[0004] In related technologies, it is impossible to accurately measure space loss in elevator scenarios, resulting in inaccurate estimates of link budgets during the design phase, affecting the rationality of the construction plan.

[0005] To address the above-mentioned problems, no effective solutions have been proposed so far. Summary of the Invention

[0006] The embodiment of the present invention provides a space loss testing method and device based on an elevator signal coverage scenario, so as to at least solve the technical problem in the related art that the space loss in the elevator scenario cannot be accurately measured, resulting in reduced customer satisfaction.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a spatial loss test method based on an elevator signal coverage scenario is provided, and the test system architecture under the elevator signal coverage scenario includes: a first device installed in the elevator machine room, a second device installed in the elevator car, and an elevator-specific antenna installed in the elevator shaft. The spatial loss test method based on the elevator signal coverage scenario includes: a modulation signal transmission step, after detecting that the first device and the second device are initialized, controlling the first device to configure the spatial loss test parameters, and controlling the first device to continuously transmit the modulation signal containing the configuration parameters; a signal demodulation step, controlling the second device to demodulate the modulated signal obtained by scanning, obtain the configuration parameters of the first device, and adjust its own configuration parameters to synchronize with the configuration parameters of the first device; repeating the modulation signal transmission step and the signal demodulation step for a preset number of times under different configuration states to test the spatial loss value of multiple frequency bands.

[0008] Optionally, the modulated signal transmission step also includes: controlling the power of the modulated signal transmitted by the first device to decrease according to a predetermined frequency until the second device cannot receive the modulated signal, so as to determine the effective minimum transmission power value between the first device and the second device.

[0009] Optionally, the step of controlling the first device to configure spatial loss test parameters includes: controlling the first device to configure the transmission power, transmission frequency information, digital modulation mode and signal peak-to-average ratio, wherein the modulated signal transmitted by the first device is a digital modulation signal, and the type of the digital modulation mode includes at least one of the following: orthogonal amplitude modulation QAM, orthogonal frequency division multiplexing OFDM.

[0010] Optionally, the signal demodulation step further includes: controlling the second device to measure the power strength of the received modulated signal.

[0011] Optionally, it also includes: performing a space loss test when the door of the elevator car is in an open or closed state; based on the space loss test results of the door state of the elevator car, evaluating the impact of the door state on the elevator signal transmission, and generating an elevator door signal transmission evaluation result.

[0012] Optionally, after repeating the modulated signal transmission step and the signal demodulation step for a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands, it also includes: using an indoor line-of-sight transmission model to correct the test results of the spatial loss values ​​of multiple frequency bands, wherein the indoor line-of-sight transmission model includes: the total floor height parameter, the floor height parameter of each floor, and the elevator factory performance parameters.

[0013] Optionally, it also includes: placing multiple communication terminals identifying different operators and different frequency bands in the elevator car, performing signal reception tests simultaneously, and calculating the terminal signal reception correction value of each operator; and using the terminal signal reception correction value to adjust the signal transmission parameters of the communication terminal.

[0014] Optionally, the method further includes: adopting a wireless channel correction strategy between the first device and the second device to eliminate the multipath effect and time-varying characteristics of the wireless channel on the spatial loss test result.

[0015] According to another aspect of an embodiment of the present invention, a spatial loss testing device based on an elevator signal coverage scenario is also provided. The test system architecture in the elevator signal coverage scenario includes: a first device installed in the elevator machine room, a second device installed in the elevator car, and an elevator-specific antenna installed in the elevator shaft. The spatial loss testing device based on the elevator signal coverage scenario includes: a modulation signal transmitting unit, which executes a modulation signal transmitting step, and after detecting that the first device and the second device are initialized, controls the first device to configure the spatial loss test parameters, and controls the first device to continuously transmit the modulation signal containing the configuration parameters; a signal demodulation unit, which executes a signal demodulation step, controls the second device to demodulate the scanned modulation signal, obtains the configuration parameters of the first device, and adjusts its own configuration parameters to synchronize with the configuration parameters of the first device; and a spatial loss testing unit, which is used to repeat a preset number of modulation signal transmitting steps and signal demodulation steps under different configuration states to test the spatial loss values ​​of multiple frequency bands.

[0016] Optionally, the modulated signal transmitting unit includes: a first control module, used to control the power of the modulated signal transmitted by the first device to decrease according to a predetermined frequency until the second device cannot receive the modulated signal, so as to determine the effective minimum transmission power value between the first device and the second device.

[0017] Optionally, the modulated signal transmitting unit also includes: a second control module, used to control the first device to configure the transmission power, transmission frequency information, digital modulation mode and signal peak-to-average ratio, wherein the modulated signal transmitted by the first device is a digital modulation signal, and the type of the digital modulation mode includes at least one of the following: orthogonal amplitude modulation QAM, orthogonal frequency division multiplexing OFDM.

[0018] Optionally, the signal demodulation unit includes: a third control module, configured to control the second device to measure the power strength of the received modulated signal.

[0019] Optionally, the space loss testing device based on the elevator signal coverage scenario also includes: a space loss testing module, which is used to perform a space loss test when the door of the elevator car is in an open or closed state; a signal transmission evaluation module, which is used to evaluate the impact of the door state on the elevator signal transmission based on the space loss test results of the door state of the elevator car, and generate an elevator door signal transmission evaluation result.

[0020] Optionally, the spatial loss testing device based on the elevator signal coverage scenario also includes: a correction unit, which is used to repeat the modulated signal transmission step and the signal demodulation step for a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands, and then use the indoor line-of-sight transmission model to correct the multi-band spatial loss value test results, wherein the indoor line-of-sight transmission model includes: the total floor height parameter, the floor height parameter of each floor, and the elevator factory performance parameters.

[0021] Optionally, the spatial loss testing device based on the elevator signal coverage scenario also includes: a signal reception test synchronization unit, which is used to place multiple communication terminals identifying different operators and different frequency bands in the elevator car, perform signal reception tests synchronously, and calculate the terminal signal reception correction value of each operator; a terminal transmission parameter adjustment unit, which is used to adjust the signal transmission parameters of the communication terminal using the terminal signal reception correction value.

[0022] Optionally, the spatial loss testing device based on the elevator signal coverage scenario also includes: a channel correction unit, which is used to adopt a wireless channel correction strategy between the first device and the second device to eliminate the multipath effect and time-varying characteristics of the wireless channel on the spatial loss test results.

[0023] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided, wherein the computer-readable storage medium includes a stored computer program, wherein when the computer program is running, the device where the computer-readable storage medium is located is controlled to execute any of the above-mentioned spatial loss test methods based on elevator signal coverage scenarios.

[0024] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the steps of any one of the above-mentioned methods for testing space loss based on elevator signal coverage scenarios are implemented.

[0025] In the present disclosure, the modulation signal transmission step can be performed first. After detecting that the first device and the second device have been initialized, the first device is controlled to configure the spatial loss test parameters, and the first device is controlled to continuously transmit the modulation signal containing the configuration parameters; the signal demodulation step is performed to control the second device to demodulate the scanned modulation signal, obtain the configuration parameters of the first device, and adjust its own configuration parameters to synchronize with the configuration parameters of the first device; the modulation signal transmission step and the signal demodulation step are repeated a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands.

[0026] Based on the above-mentioned disclosure, two devices can be used to transmit modulated signals and demodulate received signals to realize the wireless signal path loss detection and evaluation function within a certain distance (such as from the elevator room to the elevator car). The receiving device can realize automatic tracking and synchronization according to the different configuration parameters of the transmitting device, and can perform one-time testing and recording of spatial loss parameters of multiple frequency bands, thereby improving the efficiency of link loss measurement in elevator scenarios and improving customer satisfaction, thereby solving the technical problem in related technologies that cannot accurately measure spatial loss in elevator scenarios and reduces customer satisfaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0028] Figure 1 is a flowchart of an optional space loss testing method based on an elevator signal coverage scenario according to an embodiment of the present invention;

[0029] Figure 2 This is a diagram of a test architecture for spatial wireless signal loss in an elevator signal coverage scenario according to an embodiment of the present invention;

[0030] Figure 3 This is a flow chart of a spatial loss test performed by a signal transmitting device A according to an embodiment of the present invention;

[0031] Figure 4 is a flow chart of a spatial loss test performed by a signal receiving device B according to an embodiment of the present invention;

[0032] Figure 5 This is a flowchart of implementing spatial loss calculation in different frequency bands under different elevator coverage scenarios according to an embodiment of the present invention;

[0033] Figure 6 This is a flow chart of a signal spatial loss test of actual user impairments in elevator coverage scenarios of different operators according to an embodiment of the present invention;

[0034] Figure 7 is a schematic diagram of an optional space loss test device based on an elevator signal coverage scenario according to an embodiment of the present invention;

[0035] Figure 8 This is a structural block diagram of an electronic device according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0037] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0038] To facilitate those skilled in the art to understand the present invention, some of the terms or nouns involved in the embodiments of the present invention are explained below:

[0039] Power Transmitted, abbreviated as PTX, refers to the signal power emitted from a transmitting device (such as a base station or handheld device) and is an important parameter for measuring signal strength.

[0040] Received power, Power Received, abbreviated as PRX, refers to the signal power received at the receiving end (such as a mobile phone or test equipment) and is used to evaluate the loss during signal propagation.

[0041] Signal loss, referred to as Loss, in this invention refers to the spatial loss experienced during the propagation of wireless signals from the transmitter to the receiver. It is measured in dB and is a key indicator for evaluating signal coverage quality.

[0042] It should be noted that the spatial loss test method and device based on the elevator signal coverage scenario in the present disclosure can be used in the field of elevator signal testing technology. When realizing the spatial loss measurement in the elevator coverage scenario, it can also be used in any field other than the field of elevator signal testing technology. When realizing the spatial loss measurement in the elevator coverage scenario, the present disclosure does not limit the application field of the spatial loss test method and device based on the elevator signal coverage scenario.

[0043] It should be noted that the information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) collected by this disclosure are information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of relevant data comply with the relevant laws, regulations and standards of the relevant regions, take necessary confidentiality measures, do not violate public order and good morals, and provide corresponding operation portals for users to choose to authorize or refuse. For example, an interface is set up between this system and relevant users or institutions. Before obtaining relevant information, it is necessary to send an acquisition request to the aforementioned user or institution through the interface, and obtain relevant information after receiving the consent information fed back by the aforementioned user or institution.

[0044] It should be noted that in this disclosure, when collecting and analyzing customer information, the corresponding operation entrance is provided for users to choose to agree or reject the automated decision-making results; if the user chooses to reject, the expert decision-making process will be entered.

[0045] The following embodiments of the present invention can be applied to various systems / applications / devices for spatial loss testing based on elevator signal coverage scenarios. The present invention can be applied to elevator signal coverage design scenarios for new buildings, elevator signal coverage renovation scenarios for existing buildings, network operation and maintenance, and troubleshooting scenarios, etc. In particular, it optimizes the design and construction testing of wireless signal coverage for elevator scenarios within buildings, solving the spatial loss problem in wireless signal transmission within elevators. It is suitable for signal coverage optimization for 4G, 5G, and other wireless communication technologies, aiming to improve signal penetration and network quality in elevator scenarios while reducing construction and operation and maintenance costs.

[0046] The following embodiments of the present invention introduce a novel spatial wireless signal loss testing solution. By transmitting modulated signals and demodulating received signals, they ensure the synchronization of test parameters, enhance the reliability of test results, and allow for simultaneous testing and recording of spatial loss across multiple frequency bands. This approach adapts to the frequency requirements of different operators and overcomes the limitations of single-band testing. By incorporating specific scenario parameters, the propagation loss model is modified to more accurately match the actual elevator environment, improving the accuracy of signal coverage planning in different scenarios.

[0047] The present invention will be described in detail below with reference to various embodiments.

[0048] Example 1

[0049] According to an embodiment of the present invention, an embodiment of a space loss testing method based on an elevator signal coverage scenario is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0050] Aiming at the spatial loss test in elevator signal coverage scenarios, the present invention proposes an advanced solution that can be used for pre-construction design prediction and accurate testing of wireless signal spatial loss during construction. This solution solves the problem of spatial loss parameter testing and calibration in elevator signal coverage applications, provides information support for elevator signal coverage engineering design and construction, helps to improve design accuracy, optimize construction plans, enhance signal coverage quality, further reduce the construction cost of operators' hardware equipment, and improve customers' return on investment.

[0051] According to one aspect of the present application, a spatial loss test method based on an elevator signal coverage scenario is provided. The test system architecture under the elevator signal coverage scenario includes: a first device installed in the elevator machine room, a second device installed in the elevator car, and an elevator-specific antenna installed in the elevator shaft.

[0052] Figure 1 FIG. 1 is a flow chart of an optional method for testing spatial loss based on an elevator signal coverage scenario according to an embodiment of the present invention. Figure 1 As shown, the method includes the following steps:

[0053] Step S101 is a modulation signal transmission step. After detecting that the first device and the second device have completed initialization, the first device is controlled to configure space loss test parameters, and the first device is controlled to continuously transmit a modulation signal containing the configuration parameters.

[0054] In this embodiment, step S101 is the initial stage of the spatial wireless signal loss test scheme. When the first device (device A) and the second device (device B) complete their respective initialization processes, that is, device self-test and parameter setting, the automatic control mechanism is started. The specific operation is as follows: the system confirms that the first device and the second device have completed initialization, the device status is stable, and they are ready to perform signal test operations. Then the system implements instructions to the first device, requiring it to set parameters for spatial loss testing, including but not limited to transmission power, center frequency, signal modulation mode, etc. The setting of these parameters is based on the test requirements and the target frequency band to ensure that the spatial loss can be accurately measured. Afterwards, the first device continuously transmits a modulated signal containing detailed configuration information according to the configured spatial loss test parameters. The modulated signal carries key parameters of the transmitting device such as transmission power and center frequency. This step ensures that the second device can receive these parameters for subsequent synchronization and testing.

[0055] Optionally, the modulated signal transmission step further includes: controlling the power of the modulated signal transmitted by the first device to decrease according to a predetermined frequency until the second device cannot receive the modulated signal, so as to determine the effective minimum transmission power value between the first device and the second device.

[0056] In this embodiment, a power adjustment mechanism is provided when performing the modulated signal transmission step, including controlling the power of the modulated signal transmitted by the first device (usually a test device located in the elevator machine room) and gradually reducing it according to a preset frequency until the second device (the test device located in the elevator car) cannot receive the modulated signal. This process can determine the minimum transmission power value required for effective communication between the first device and the second device, which is achieved through a series of power reduction tests. Specifically, in the implementation process, this step first sets an initial transmission power that is sufficient to ensure that the modulated signal can be received by the second device. Then, according to a predefined power reduction step, the first device gradually reduces its transmission power. After each reduction, the second device will attempt to receive the signal and evaluate whether it can still be successfully demodulated. When the second device fails to receive the modulated signal for the first time, the transmission power value that can be successfully received last time is recorded. This value is the effective minimum transmission power between the first device and the second device, which is used for subsequent spatial loss tests.

[0057] This implementation not only identifies the minimum transmit power threshold, ensuring signal synchronization and parameter consistency during testing, but also fully accounts for the complexity of signal attenuation in elevator scenarios, such as the metal shielding of the elevator car, the structure of the elevator shaft, and other potential signal interference factors. Through multiple tests and adjustments, this embodiment achieves accurate assessment of wireless signal loss.

[0058] Optionally, the step of controlling the first device to configure spatial loss test parameters includes: controlling the first device to configure the transmission power, transmission frequency information, digital modulation mode and signal peak-to-average ratio, wherein the modulated signal transmitted by the first device is a digital modulation signal, and the type of digital modulation mode includes at least one of the following: orthogonal amplitude modulation QAM, orthogonal frequency division multiplexing OFDM.

[0059] In this embodiment, when controlling the first device to configure the spatial loss test parameters, key parameters such as the transmit power, transmit frequency, digital modulation mode, and signal peak-to-average ratio are set. It should be noted that the modulated signal transmitted by the first device is a digital modulation signal, and the digital modulation mode may include but is not limited to quadrature amplitude modulation (QAM) and orthogonal frequency-division multiplexing (OFDM). These modulation technologies are intended to improve the efficiency and quality of signal transmission.

[0060] QAM is a technology that simultaneously modulates the amplitude and phase of a signal. It can transmit more information within a given frequency band, improving spectrum efficiency. In this embodiment, selecting QAM as the modulation method maximizes the amount of information carried by the signal during the test, thereby more accurately measuring signal loss.

[0061] OFDM is a technology that splits high-speed data signals into multiple lower-rate subcarriers for transmission, effectively combating multipath propagation and frequency-selective fading. In this example, in the elevator signal coverage scenario, OFDM modulation improves signal reliability and test accuracy due to the complex multipath effects that can occur in the elevator shaft.

[0062] Step S102 is a signal demodulation step, in which the second device is controlled to demodulate the modulated signal obtained by scanning, obtain the configuration parameters of the first device, and adjust its own configuration parameters to be synchronized with the configuration parameters of the first device.

[0063] In this embodiment, step S102 involves signal reception and parameter synchronization. When the second device receives the modulated signal from the first device, it immediately performs demodulation. Specifically, the second device scans and demodulates the signal to extract the first device's transmit parameters, such as transmit power and center frequency. Demodulation is a necessary step in signal reception processing, restoring the modulated signal to its original form. After obtaining the configuration parameters of the first device through demodulation, the second device automatically adjusts its own configuration parameters to ensure they match those of the first device. This dynamic synchronization ensures signal parameter consistency throughout the test, thereby improving the accuracy and reliability of spatial loss testing.

[0064] Optionally, the signal demodulation step further includes: controlling the second device to measure the power strength of the received modulated signal.

[0065] In this embodiment, the signal demodulation step involves more than simply decoding the modulated signal; it also involves precisely measuring the power strength of the demodulated signal to ensure the accuracy and reliability of the entire test process. This allows this embodiment to more comprehensively understand the signal propagation characteristics in elevator scenarios. By measuring the power strength of the received modulated signal, it is possible to verify whether the signal reaches the receiving end intact, which is crucial for assessing signal loss. If the signal strength falls below a certain threshold, it may indicate additional interference or loss during transmission, requiring further adjustment of test conditions or inspection of the transmission path.

[0066] Furthermore, the power measurement in this embodiment can be used to calibrate the power settings of the transmitting device, ensuring that the comparison between the transmitted and received signals is performed on the same power basis. This calibration is particularly important for maintaining the accuracy of test results, as small power differences can be magnified in the power attenuation calculation, leading to inaccurate loss estimates.

[0067] In addition to being used directly to calculate loss, received signal power strength can also be used to analyze signal quality, such as signal-to-noise ratio (SNR) and peak-to-average ratio (PAR). These metrics are critical for assessing signal stability and reliability in elevator scenarios, especially when the elevator is in motion, where signal quality may be affected by multipath and shadow fading.

[0068] In step S103 , the modulated signal transmitting step and the signal demodulation step are repeated for a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands.

[0069] In step S103 of this embodiment, in the process of realizing the precise test of multi-band spatial loss, the system controls the first device and the second device to perform multiple signal transmissions and demodulations to obtain spatial loss values ​​under different configuration states. Specifically, the system instructs the first device and the second device to repeat the process of transmitting modulated signals and demodulating signals under different configuration states (such as different transmission powers and different center frequencies). The number of repetitions of this process is pre-set, and the purpose is to obtain more stable and reliable spatial loss data through multiple tests. In each repetition, the first device can change the frequency band of its transmitted signal to ensure that all frequency bands that need to be tested are covered. In this way, not only can the loss of a single frequency band be tested, but also the signal penetration capability and loss characteristics of multiple frequency bands in the elevator scene can be comprehensively evaluated.

[0070] It's important to note that after each transmission and demodulation, the corresponding transmission configuration parameters and spatial loss values ​​are recorded. This data is then analyzed to test and record spatial loss values ​​across multiple frequency bands. This data recording and analysis allows for identification of differences in spatial loss across frequency bands, providing a valuable reference for subsequent network optimization, design, and construction.

[0071] Through the above steps, a modulation signal transmission step can be performed. After detecting that the first device and the second device have been initialized, the first device is controlled to configure the spatial loss test parameters and the first device is controlled to continuously transmit the modulation signal containing the configuration parameters. A signal demodulation step can be performed. The second device is controlled to demodulate the scanned modulation signal to obtain the configuration parameters of the first device and adjust its own configuration parameters to synchronize with the configuration parameters of the first device. The modulation signal transmission step and the signal demodulation step are repeated a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands. In this embodiment, two devices can be used to transmit the modulation signal and demodulate the received signal to achieve the wireless signal path loss detection and evaluation function within a certain distance (such as from the elevator machine room to the elevator car). The receiving device can achieve automatic tracking and synchronization based on the different configuration parameters of the transmitting device. It can achieve one-time testing and recording of spatial loss parameters of multiple frequency bands, improve the efficiency of link loss measurement in elevator scenarios, and improve customer satisfaction. This can solve the technical problem of the inability to accurately measure spatial loss in elevator scenarios and reduced customer satisfaction in related technologies.

[0072] Optionally, it also includes: performing a space loss test when the elevator car door is in an open or closed state; based on the space loss test results of the elevator car door state, evaluating the impact of the door state on the elevator signal transmission, and generating an elevator door signal transmission evaluation result.

[0073] This embodiment optionally includes the technical feature of performing spatial wireless signal loss testing in different states of the elevator car door being open or closed. The state of the elevator door is directly related to the physical barrier properties inside the elevator car and has a significant impact on the signal penetration capability. By testing under both open and closed door conditions, it is possible to evaluate how changes in door state affect signal transmission, thereby generating an elevator door signal transmission evaluation result. This evaluation result is useful for optimizing elevator signal coverage solutions. When designing elevator internal signal enhancement or optimization strategies, the test data under different door states can be used to ensure that the impact of dynamic changes in elevator doors on signal quality is taken into account during network construction and maintenance, thereby improving the stability of overall signal coverage and user communication experience.

[0074] Optionally, after repeating the modulated signal transmission step and the signal demodulation step for a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands, the method further includes: correcting the spatial loss value test results of the multiple frequency bands using an indoor line-of-sight transmission model, wherein the indoor line-of-sight transmission model includes: total floor height parameters, floor height parameters of each floor, and elevator factory performance parameters.

[0075] After completing the multi-band spatial loss test, this embodiment uses an indoor line-of-sight transmission model (such as the standard model described in 3GPP protocol 38.901) to correct the test results. This model correction process takes into account the total height of the floors, the specific height of each floor, and the factory performance parameters of the elevator (such as the material of the car, the shielding effect of the door, etc.). These factors will have a complex impact on the propagation of wireless signals in the actual environment. Through model correction, this embodiment can generate a spatial loss value that is more in line with the actual situation, provide more accurate data support for the design of the elevator signal coverage network, help optimize the link budget and antenna deployment of the elevator signal coverage project, reduce hardware redundancy caused by model deviation, thereby reducing the overall construction cost, while also ensuring the quality and efficiency of signal coverage.

[0076] Optionally, it also includes: placing multiple communication terminals identifying different operators and different frequency bands in the elevator car, performing signal reception tests simultaneously, and calculating the terminal signal reception correction value of each operator; and using the terminal signal reception correction value to adjust the signal transmission parameters of the communication terminal.

[0077] In order to further improve the user compatibility and service quality of signal coverage, this embodiment can also place a variety of communication terminals identifying different operators and frequency bands in the elevator car, and conduct signal reception tests at the same time. By comparing the signal reception data of the test instrument and different mobile phone terminals in the same environment, the correction value of the signal reception of each operator's terminal can be calculated. The correction value reflects the performance difference between the user equipment and the professional test instrument, especially the antenna gain and directivity differences. Using the terminal signal reception correction value to adjust the signal transmission parameters of the communication terminal can ensure that the network design is more in line with the performance of the actual user equipment, effectively compensate for the signal reception loss caused by equipment differences, and thus provide basic data for signal optimization in scenarios where multiple operators share elevator coverage, ensuring that mobile phone users of different operators can enjoy high-quality signal coverage.

[0078] Optionally, the method further includes: adopting a wireless channel correction strategy between the first device and the second device to eliminate the effects of multipath effects and time-varying characteristics of the wireless channel on the spatial loss test result.

[0079] In order to deal with the interference of the multipath effect and time-varying characteristics of the wireless channel on the spatial loss test results, this embodiment also provides a wireless channel correction strategy, wherein the multipath effect causes random fading to the signal reception, and the time-varying characteristics are due to the changes in the physical environment when the elevator is running, both of which will affect the accuracy and stability of the test. By correcting the wireless channel between the first device (for example, a signal transmitter located in the elevator room) and the second device (for example, a signal receiver located in the elevator car), these interference factors can be effectively filtered out or calibrated to ensure that the test results truly reflect the loss of the spatial wireless signal without being affected by instantaneous environmental changes. This correction strategy is useful for improving the accuracy of spatial loss tests, establishing a reliable indoor signal coverage model, and ensuring the continuity and quality of network signals in elevator scenarios.

[0080] The following describes in detail another optional specific implementation.

[0081] Figure 2 FIG. 1 is a test architecture diagram for spatial wireless signal loss in an elevator signal coverage scenario according to an embodiment of the present invention. Figure 2 As shown, the test architecture includes: an elevator car, an elevator shaft, an elevator machine room, an elevator-specific antenna installed on the top of the elevator shaft, device A installed in the elevator machine room (corresponding to the first device mentioned above), and device B located in the elevator car (corresponding to the second device mentioned above).

[0082] The preliminary measurement plan for spatial wireless signal loss based on terminals A and B is as follows:

[0083] Wireless signal loss, or propagation loss, refers to the loss caused by radio waves propagating in space. It is caused by the radiation diffusion of the transmitted power and the propagation characteristics of the channel, and reflects the change in the average power of the received signal in a macroscopic range. From the principle architecture, we can see that the RF signal power of device A located in the elevator room is transmitted through the elevator-specific antenna installed during construction. The radio frequency signal received by device B in the elevator car is In this way, the power attenuation on the downward path of the elevator shaft can be obtained

[0084]

[0085] Among them: Loss F = Spatial loss of the wireless signal at frequency F in the current scenario, in dB.

[0086] Unit: dBm.

[0087] Unit: dBm.

[0088] According to the principle of spatial loss symmetry, the spatial scenario in the upward direction of the elevator shaft is the same as that in the downward direction, so the loss is also the same in the downward direction.

[0089]

[0090] Figure 3 FIG. 1 is a flow chart of a signal transmitting device A performing a space loss test according to an embodiment of the present invention. Figure 3 As shown in the figure, after device A is initialized, the parameters related to the spatial loss test, such as transmit power TX, transmit frequency F, and modulation mode, are configured; then device A continuously transmits the modulated signal in a loop and modifies the parameters related to the spatial loss test for multi-band spatial loss testing. After that, device A can continuously transmit the modified modulated signal in a loop until the test is completed.

[0091] Figure 4 FIG. 1 is a flow chart of a signal receiving device B performing a spatial loss test according to an embodiment of the present invention. Figure 4 As shown in the figure, after device B is initialized, the default parameters are configured or the initialization configuration parameters are manually entered. Then, device B cyclically scans the modulated signal transmitted by device A. After scanning the modulated signal transmitted by device A, it demodulates and obtains the parameters configured by device A. After that, device B can automatically adjust its own configuration parameters to be consistent with device A to maintain synchronization, and accurately measure the signal power transmitted by device A and record it until the test is completed.

[0092] In addition, since the two devices are located in different locations for transmission and reception, if the power or frequency of the test signal transmitted by device A changes, device B will not be able to accurately calculate and analyze it, which may result in a loss in the spatial loss test value. F To eliminate test deviations caused by different configuration parameters between devices A and B, device A transmits a modulated signal instead of a simple single-tone test signal. This signal is modulated with the configuration parameters of device A (such as transmit power, transmit frequency, and peak-to-average ratio). Device B scans the attenuated wireless signal and demodulates it to obtain the configuration parameters of device A. Based on the demodulated parameters, device B optimizes its own configuration parameters to match those of device A, enabling a more accurate spatial loss value to be obtained.

[0093] Figure 5 FIG. 1 is a flow chart of realizing spatial loss calculation in different frequency bands under different elevator coverage scenarios according to an embodiment of the present invention. Figure 5As shown, it includes: multi-band, multiple A and B device tests can be performed according to multiple scenarios based on elevator performance and floor height, and then combined with the penetration loss model to calculate the adaptation parameters K1, K2, and K3 in each scenario. After that, the penetration loss prediction model in different elevator scenarios is obtained, and network parameters are designed for new elevator coverage based on the penetration loss prediction model.

[0094] It should be noted that since the elevator car and the transmitting antenna at the top of the elevator shaft are both in a broadly defined indoor environment, and the transmitting antenna can serve as the signal source hotspot, that is, the location where the signal is transmitted, and the elevator car serves as the user terminal receiving location and is within the visual range of the signal source hotspot (transmitting antenna), its path loss conforms to the indoor line-of-sight transmission model described in 3GPP protocol 38.901, that is:

[0095] PL InH-LOS =K1+K2log 10 (d 3D )+K3log 10 (f c ) (3)

[0096] Among them: PL InH-LOS is the path loss from the transmitting antenna at the top of the elevator shaft to the user terminal in the car;

[0097] d 3D The spatial distance between the transmitting antenna at the top of the elevator shaft and the user terminal in the car;

[0098] f c is the test signal carrier center frequency;

[0099] K1, K2, and K3 are parameters that adapt the model to the specific application environment.

[0100] In the actual wear test, considering the influence of environmental factors such as elevator performance and floor height, this embodiment divides the scenarios into four categories as shown in Table 1 below:

[0101] Table 1 Scene division table

[0102] Scene Division Elevator performance Floor height 1 Load ≤ 700kg, passenger ≤ 10 people, speed > 1m / s ≤60 meters 2 Load ≤ 700kg, passenger ≤ 10 people, speed > 1m / s >60 meters 3 Loading capacity>700kg, carrying capacity>10 people, speed≤1m / s ≤60 meters 4 Loading capacity>700kg, carrying capacity>10 people, speed≤1m / s >60 meters

[0103] During the test, it is necessary to repeat the test readings N times on multiple floors, combined with the test propagation distance d 3D , and the carrier center frequency f c , the specific propagation path loss under different propagation environments can be obtained, and then the coefficients K1, K2, and K3 of formula (1) can be modified to obtain the propagation loss model under different scenarios, thereby providing a convenient link loss estimation for elevator coverage construction in different scenarios.

[0104] Figure 6FIG. 1 is a flow chart of a signal space loss test for actual user loss in elevator coverage scenarios of different operators according to an embodiment of the present invention. Figure 6 As shown, it includes: first, using A and B devices to test multiple 4 / 5G frequency bands of different operators to obtain the average of the correction values ​​of different mobile phones in different frequency bands of different operators, and then using the square average method to further calculate the correction values ​​a, b, and c of each operator, and respectively calculate the precise path loss parameters Loss between the signals transmitted by different operators to the actual mobile phone users in the elevator coverage scenario. Finally, the correction parameters and path loss parameters Loss based on different operators can provide support for the network construction and implementation of the elevator coverage scenario.

[0105] It should be noted that in elevator signal coverage scenario applications, the specific wireless signal receiving terminal is generally a mobile phone terminal. Since test equipment B is a dedicated test equipment with a dedicated test antenna, there are natural differences in gain, directionality, etc. from the integrated built-in antenna of a mobile phone.

[0106] Optionally, the test instrument in this embodiment can use a leather case antenna, whose radiation pattern is a 360-degree circle, similar in shape to an apple, and whose transmit and receive gains are relatively consistent in all directions. Therefore, the test instrument's receive gain changes little with changes in antenna orientation. However, as can be seen from the typical radiation pattern of a mobile phone, due to the small internal space, compact antenna layout, and safety regulations, its antenna radiation has obvious directionality, that is, there is a clear direction in which the transmit and receive gain is significantly stronger than in other directions. In addition, there are many mobile phone manufacturers on the market. When designing mobile phone hardware, each mobile phone manufacturer will adopt different antenna solutions based on the positioning or platform plan of each product. Their antenna positions, transmit and receive gains, radiation directions, etc. are significantly different. Therefore, in actual application scenarios, the actual level of the received signal power level of the user's mobile phone will be different from the path loss tested using the instrument.

[0107] Due to the differences in path loss, this embodiment can determine the main influencing factors during correction: in actual application scenarios, considering the randomness of the angle at which users use their mobile phones, this embodiment focuses on the influencing factors of the differences in antenna configurations of different mobile phones from different manufacturers at the receiving end and the test instrument B. In addition, considering that different signal transmission frequency bands of different operators may produce different path losses in the same environment, this embodiment also takes this factor into consideration.

[0108] Due to the difference in path loss, in this embodiment, during the correction process, the analog signal source tester can be used to test the 4 / 5G frequency band signals of different operators. At the same time, at the same location of the test instrument B, different manufacturers' entry-level mobile phones with a price of one thousand yuan can be used for synchronous testing as the minimum standard for ensuring user access to the signal. For the test mobile phones, full-network entry-level models (the lowest configuration models on sale of the brand) can be selected as representatives from multiple brands. Then, the propagation loss is calculated using formula (1). First, the arithmetic mean of the correction values ​​of each mobile phone in different frequency bands of different operators is obtained. Then, the correction mean of the operator is calculated based on the arithmetic mean of multiple mobile phones in different frequency bands of the same operator. In order to make the network coverage designed after adding the correction value meet more frequency bands of each operator, the square average method is used to finally calculate the correction value of each operator, where:

[0109]

[0110] The details are shown in Table 2 below:

[0111] Table 2 Calculation of correction values ​​for different operators

[0112]

[0113] According to Table 2 above, this embodiment calculates the correction values ​​a, b, and c for different operators, respectively. In actual network deployment, the correction values ​​are used to compensate for the difference in the accurate path loss parameter Loss obtained by instrument testing and actual mobile phone users. Specifically,

[0114] For operator A's elevator coverage scenario: Loss = P TX -P RX +a (7)

[0115] For operator B's elevator coverage scenario: Loss = P TX -P RX +b (8)

[0116] For operator C's elevator coverage scenario: Loss = P TX -P RX +c (9)

[0117] For scenarios with multiple operators providing coverage, take Loss = P TX -P RX +Max{a,b,c} is provided for reference in network construction to ensure that spatial path loss is fully considered in elevator coverage scenarios and that mobile phone users from multiple operators can communicate normally.

[0118] Through the above implementation, two devices can be used to implement the wireless signal path loss detection and evaluation function within a certain distance (such as from the elevator machine room to the elevator car), realize autonomous communication, and maintain synchronization of test parameters.

[0119] The receiving device in this embodiment can realize automatic tracking and synchronization according to the different configuration parameters of the transmitting device, and can perform one-time testing and recording of spatial loss parameters of multiple frequency bands. It uses multiple tests to correct the transmission loss model parameters to obtain propagation path loss information that changes with the actual scene, and derive the transmission loss model under different scenarios.

[0120] The following describes it in detail with reference to another embodiment.

[0121] Example 2

[0122] A space loss testing device based on an elevator signal coverage scenario provided in this embodiment includes multiple implementation units, each implementation unit corresponds to each implementation step in the above-mentioned embodiment 1. Its specific implementation method and beneficial effects can refer to the above-mentioned method embodiment and will not be repeated here.

[0123] According to another aspect of an embodiment of the present invention, a spatial loss test device based on an elevator signal coverage scenario is also provided. The test system architecture under the elevator signal coverage scenario includes: a first device installed in the elevator machine room, a second device installed in the elevator car, and an elevator-specific antenna installed in the elevator shaft.

[0124] Figure 7 is a schematic diagram of an optional space loss test device based on an elevator signal coverage scenario according to an embodiment of the present invention. Figure 7 As shown, the space loss test device based on the elevator signal coverage scenario may include: a modulation signal transmitting unit 71, a signal demodulation unit 72, and a space loss test unit 73.

[0125] Among them, the modulation signal transmitting unit 71 performs the modulation signal transmitting step, and after detecting that the first device and the second device are initialized, controls the first device to configure the space loss test parameters, and controls the first device to continuously transmit the modulation signal containing the configuration parameters.

[0126] The signal demodulation unit 72 executes the signal demodulation step, controls the second device to demodulate the modulated signal obtained by scanning, obtains the configuration parameters of the first device, and adjusts its own configuration parameters to synchronize with the configuration parameters of the first device.

[0127] The spatial loss test unit 73 is used to repeat the modulated signal transmission step and the signal demodulation step for a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands.

[0128] The above-mentioned spatial loss test device based on elevator signal coverage scenarios can execute a modulation signal transmission step through the modulation signal transmission unit 71. After detecting that the first and second devices have completed initialization, the modulation signal transmission unit 71 controls the first device to configure spatial loss test parameters and controls the first device to continuously transmit a modulation signal containing the configuration parameters. The signal demodulation unit 72 executes a signal demodulation step, controls the second device to demodulate the scanned modulation signal, obtain the configuration parameters of the first device, and adjust its own configuration parameters to synchronize with the configuration parameters of the first device. The spatial loss test unit 73 repeats the modulation signal transmission and signal demodulation steps a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands. In this embodiment, two devices can be used to transmit modulation signals and demodulate received signals to implement wireless signal path loss detection and evaluation within a certain distance (such as from the elevator machine room to the elevator car). The receiving device can automatically track and synchronize based on the different configuration parameters of the transmitting device. This allows for the simultaneous testing and recording of spatial loss parameters for multiple frequency bands, improving the efficiency of link loss measurement in elevator scenarios and enhancing customer satisfaction. This can solve the technical problem of the inability to accurately measure spatial loss in elevator scenarios and reduced customer satisfaction in related technologies.

[0129] The spatial loss testing device based on the elevator signal coverage scenario includes: optionally, the modulation signal transmitting unit includes: a first control module, used to control the power of the modulation signal transmitted by the first device to decrease according to a predetermined frequency until the second device can no longer receive the modulation signal, so as to determine the effective minimum transmission power value between the first device and the second device.

[0130] Optionally, the modulated signal transmitting unit also includes: a second control module, used to control the first device to configure the transmission power, transmission frequency information, digital modulation mode and signal peak-to-average ratio, wherein the modulated signal transmitted by the first device is a digital modulation signal, and the type of digital modulation mode includes at least one of the following: orthogonal amplitude modulation QAM, orthogonal frequency division multiplexing OFDM.

[0131] Optionally, the signal demodulation unit includes: a third control module, configured to control the second device to measure the power strength of the received modulated signal.

[0132] Optionally, the space loss testing device based on the elevator signal coverage scenario also includes: a space loss testing module, which is used to perform space loss testing when the door of the elevator car is in the open or closed state; a signal transmission evaluation module, which is used to evaluate the impact of the door state on the elevator signal transmission based on the space loss test results of the elevator car door state, and generate an elevator door signal transmission evaluation result.

[0133] Optionally, the spatial loss testing device based on the elevator signal coverage scenario also includes: a correction unit, which is used to repeat the modulation signal transmission step and the signal demodulation step for a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands, and then use the indoor line-of-sight transmission model to correct the multi-band spatial loss value test results, wherein the indoor line-of-sight transmission model includes: the total floor height parameter, the floor height parameter of each floor, and the elevator factory performance parameters.

[0134] Optionally, the spatial loss testing device based on the elevator signal coverage scenario also includes: a signal reception test synchronization unit, which is used to place multiple communication terminals identifying different operators and different frequency bands in the elevator car, perform signal reception tests synchronously, and calculate the terminal signal reception correction value of each operator; a terminal transmission parameter adjustment unit, which is used to use the terminal signal reception correction value to adjust the signal transmission parameters of the communication terminal.

[0135] Optionally, the spatial loss test device based on the elevator signal coverage scenario also includes: a channel correction unit, which is used to adopt a wireless channel correction strategy between the first device and the second device to eliminate the multipath effect and time-varying characteristics of the wireless channel on the spatial loss test results.

[0136] The above-mentioned space loss test device based on the elevator signal coverage scenario can also include a processor and a memory. The above-mentioned modulated signal transmitting unit 71, signal demodulation unit 72, space loss test unit 73, etc. are all stored in the memory as program units, and the processor executes the above-mentioned program units stored in the memory to realize the corresponding functions.

[0137] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be configured, and the kernel parameters can be adjusted to achieve spatial loss measurement in elevator coverage scenarios.

[0138] The above-mentioned memory may include non-permanent memory in a computer-readable medium, random access memory (RM) and / or non-volatile memory, such as read-only memory (ROM) or flash memory (flsh RM), and the memory includes at least one memory chip.

[0139] Example 3

[0140] An embodiment of the present application may provide an electronic device, Figure 8 This is a structural block diagram of an electronic device according to an embodiment of the present application. Figure 8 As shown, the electronic device may include: one or more ( Figure 8 Only one is shown) processor 802, memory 808, storage controller, and peripheral interface, wherein the peripheral interface is connected to the radio frequency module, audio module and display.

[0141] The memory can be used to store software programs and modules, such as the program instructions / modules corresponding to the space loss testing method and device based on elevator signal coverage scenarios in the embodiments of the present application. The processor executes the software programs and modules stored in the memory to perform various functional applications and data processing, thereby implementing the above-mentioned space loss testing method based on elevator signal coverage scenarios. The memory can include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory may further include memory remotely located relative to the processor, and these remote memories can be connected to the terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0142] The processor can call the information and application stored in the memory through the transmission device to perform the following steps: a modulation signal transmission step, after detecting that the first device and the second device are initialized, controlling the first device to configure the spatial loss test parameters, and controlling the first device to continuously transmit the modulation signal containing the configuration parameters; a signal demodulation step, controlling the second device to demodulate the scanned modulation signal, obtain the configuration parameters of the first device, and adjust its own configuration parameters to synchronize with the configuration parameters of the first device; repeating the modulation signal transmission step and the signal demodulation step for a preset number of times under different configuration states to test the spatial loss value of multiple frequency bands.

[0143] It can be understood by those skilled in the art that Figure 8 The structure shown is for illustration only, and the electronic device may also be a terminal device such as a smart phone, a tablet computer, a PDA, a Mobile Internet Device (MID), or a PD. Figure 8 It does not limit the structure of the above electronic device. For example, the electronic device may also include Figure 8 More or fewer components (such as network interfaces, display devices, etc.) shown in, or with Figure 8 Different configurations shown.

[0144] A person skilled in the art will understand that all or part of the steps in the various spatial loss test methods based on elevator signal coverage scenarios in the above embodiments can be completed by instructing the hardware related to the terminal device through a program. The program can be stored in a computer-readable storage medium, and the storage medium may include: a flash drive, a read-only memory (ROM), a random access memory (RM), a magnetic disk or an optical disk, etc.

[0145] Example 4

[0146] The embodiment of the present application further provides a storage medium. Optionally, in this embodiment, the storage medium can be used to store program codes executed by the space loss test method based on the elevator signal coverage scenario provided in the first embodiment.

[0147] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is further provided. The computer-readable storage medium includes a stored computer program. When the computer program is running, the device where the computer-readable storage medium is located is controlled to execute the spatial loss test method based on the elevator signal coverage scenario according to any one of the above-mentioned embodiments.

[0148] Optionally, in this embodiment, the storage medium may be located in any computer terminal in a computer terminal group in a computer network, or in any mobile terminal in a mobile terminal group.

[0149] The present application also provides a computer program product, including a computer program, which, when executed by a processor, implements the steps of the space loss testing method based on the elevator signal coverage scenario described in each embodiment of the present application.

[0150] The present application also provides a computer program product, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the space loss test method based on the elevator signal coverage scenario described in each embodiment of the present application are implemented.

[0151] The serial numbers of the above embodiments of the present invention are for description only and do not represent the advantages or disadvantages of the embodiments.

[0152] In the above embodiments of the present invention, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0153] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only exemplary. For example, the division of the units can be a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0154] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0155] In addition, the functional units in the various embodiments of the present invention may be integrated into a single processing unit, each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0156] If the integrated unit is implemented in the form of a software functional unit 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 invention, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RM), a mobile hard disk, a magnetic disk or an optical disk.

[0157] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A spatial loss test method based on an elevator signal coverage scenario, characterized in that: The test system architecture for the elevator signal coverage scenario includes: a first device installed in the elevator machine room, a second device installed in the elevator car, and an elevator-specific antenna installed in the elevator shaft. The spatial loss test method based on the elevator signal coverage scenario includes: a modulated signal transmitting step, after detecting that the first device and the second device have completed initialization, controlling the first device to configure space loss test parameters, and controlling the first device to continuously transmit a modulated signal containing the configured parameters; a signal demodulation step, controlling the second device to demodulate the modulated signal obtained by scanning, obtain configuration parameters of the first device, and adjust its own configuration parameters to synchronize with the configuration parameters of the first device; The modulated signal transmitting step and the signal demodulating step are repeated for a preset number of times under different configuration states to test the spatial loss values ​​of multiple frequency bands.

2. The space loss test method according to claim 1, characterized in that: The modulated signal transmission step further includes: The power of the modulated signal transmitted by the first device is controlled to decrease according to a predetermined frequency until the second device cannot receive the modulated signal, so as to determine a minimum effective transmission power value between the first device and the second device.

3. The space loss test method according to claim 1, wherein: The step of controlling the first device to configure space loss test parameters includes: Control the first device to configure the transmission power, transmission frequency information, digital modulation mode and signal peak-to-average ratio, wherein the modulated signal transmitted by the first device is a digital modulation signal, and the type of the digital modulation mode includes at least one of the following: orthogonal amplitude modulation QAM, orthogonal frequency division multiplexing OFDM.

4. The space loss testing method according to claim 1, wherein: The signal demodulation step further includes: Control the second device to measure the power strength of the received modulated signal.

5. The space loss testing method according to claim 1, wherein: Also includes: Performing a space loss test with the elevator car door in an open or closed state; Based on the space loss test results of the door status of the elevator car, the influence of the door status on the elevator signal transmission is evaluated, and an elevator door signal transmission evaluation result is generated.

6. The space loss testing method according to claim 1, wherein: After repeating the modulated signal transmitting step and the signal demodulating step for a preset number of times in different configuration states to test the spatial loss values ​​of multiple frequency bands, the method further includes: The multi-band spatial loss value test results are corrected using an indoor line-of-sight transmission model, wherein the indoor line-of-sight transmission model includes: a total floor height parameter, a floor height parameter of each floor, and an elevator factory performance parameter.

7. The space loss test method according to claim 1, wherein: Also includes: Placing multiple communication terminals with different operators and frequency bands in the elevator car, performing signal reception tests simultaneously, and calculating the terminal signal reception correction value of each operator; The signal transmission parameters of the communication terminal are adjusted using the terminal signal reception correction value.

8. The space loss test method according to claim 1, wherein: Also includes: A wireless channel correction strategy is adopted between the first device and the second device to eliminate the multipath effect and time-varying characteristics of the wireless channel on the spatial loss test result.

9. A spatial loss test device based on an elevator signal coverage scenario, characterized in that: The test system architecture for the elevator signal coverage scenario includes: a first device installed in the elevator machine room, a second device installed in the elevator car, and an elevator-specific antenna installed in the elevator shaft. The spatial loss test device based on the elevator signal coverage scenario includes: a modulation signal transmitting unit, executing a modulation signal transmitting step, controlling the first device to configure a space loss test parameter after detecting that the first device and the second device have completed initialization, and controlling the first device to continuously transmit a modulation signal containing the configured parameter; a signal demodulation unit, executing a signal demodulation step, controlling the second device to demodulate the modulated signal obtained by scanning, obtaining configuration parameters of the first device, and adjusting its own configuration parameters to synchronize with the configuration parameters of the first device; The spatial loss test unit is used to repeat the modulated signal transmission step and the signal demodulation step for a preset number of times under different configuration states to test the spatial loss value of multiple frequency bands.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the space loss testing method based on the elevator signal coverage scenario described in any one of claims 1 to 8 are implemented.

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