A system and method for testing indoor positioning performance of a mobile terminal

Abstract

The present application belongs to the field of positioning test technology, and relates to a system and method for indoor positioning performance testing of a mobile terminal. The system includes: a wearable pedestrian navigation device, a collection and playback instrument, multiple mobile terminals, and an analysis terminal; during collection, the wearable pedestrian navigation device and the collection and playback instrument are connected to the network; during playback, the analysis terminal is electrically connected to the collection and playback instrument and the multiple mobile terminals, and the collection and playback instrument is connected to the multiple mobile terminals via the network; the wearable pedestrian navigation device and the collection and playback instrument are connected via Bluetooth; the analysis terminal and the collection and playback instrument are connected via USB; the analysis terminal is connected to the multiple mobile terminals via network cables; the collection and playback instrument is connected to the multiple mobile terminals via Wi‑Fi. The present application can be used to perform playback testing on the positioning performance of the mobile terminal without configuring the environment.

Description

Technical Field

[0001] The present application relates to the field of positioning testing technology, and in particular to a system and method for testing indoor positioning performance of a mobile terminal. Background Art

[0002] The WLAN positioning performance of mobile terminals has always been a key indicator for smartphones. Furthermore, with the implementation of the new EU Regulation (EU) 2019 / 320 (also known as Regulation E112) on March 17, 2022, all smartphones entering the EU market must meet the new regulations. The new regulations require smartphone manufacturers to demonstrate that their products meet Wi-Fi positioning requirements. These tests include horizontal positioning accuracy and time to first fix in various indoor test scenarios. This has led to a surge in demand for Wi-Fi positioning testing of mobile terminals.

[0003] Conventional technology evaluates and tests indoor positioning of mobile terminals by deploying an environment within a limited area and obtaining reference points. Specifically, base stations are deployed within the test environment, beacons are set up at reference points, and standard reference points are obtained. Common indoor positioning technologies include Bluetooth, UWB, and RFID. Once the environment is set up, the latitude and longitude values ​​of the terminal under test at each reference point are measured and recorded, and then compared with the standard reference point positions.

[0004] However, in the above method, each test and each scenario requires the configuration of the environment, which involves a lot of equipment, a cumbersome process, and high costs. In addition, the positioning accuracy and first positioning time of the terminal under test are highly dependent on the signal strength of the wireless access point and the network quality. In actual measurement, the consistency of multiple tests cannot be guaranteed. Summary of the Invention

[0005] Based on this, it is necessary to provide a system and method for testing the indoor positioning performance of mobile terminals to address the above technical problems, which can replay the positioning performance of the mobile terminal without configuring the environment and ensure the consistency of multiple tests.

[0006] A system for testing indoor positioning performance of a mobile terminal, comprising: a wearable pedestrian navigation device, a collection and playback instrument, multiple mobile terminals, and an analysis terminal;

[0007] During data collection, the wearable pedestrian navigation device and the data collection and playback device are connected via a network;

[0008] During playback, the analysis terminal is electrically connected to the acquisition and playback instrument and the plurality of mobile terminals respectively, and the acquisition and playback instrument is connected to the plurality of mobile terminals respectively through a network.

[0009] In one embodiment, the wearable pedestrian navigation device is connected to the acquisition and playback device via Bluetooth.

[0010] In one embodiment, the analysis terminal is connected to the acquisition and playback instrument via USB.

[0011] In one embodiment, the analysis terminal is connected to the multiple mobile terminals respectively using network cables.

[0012] In one embodiment, the acquisition and playback device is connected to the multiple mobile terminals respectively using Wi-Fi.

[0013] In one embodiment, the analysis terminal is pre-installed with indoor positioning test software.

[0014] A method for testing indoor positioning performance of a mobile terminal, using a system for testing indoor positioning performance of a mobile terminal, comprising:

[0015] During collection: the wearable pedestrian navigation device and the collection and playback instrument move synchronously, the wearable pedestrian navigation device sends a collection instruction to the collection and playback instrument, the collection and playback instrument starts to collect wireless signals, and stops collecting when receiving a stop instruction sent by the wearable pedestrian navigation device, thereby obtaining the first data collected by the wearable pedestrian navigation device and the second data collected by the collection and playback instrument;

[0016] During playback: the analysis terminal receives the first data and plays it back, and simultaneously sends a start instruction to the acquisition and playback instrument and multiple mobile terminals; the acquisition and playback instrument starts to play back the second data, and at the same time, multiple mobile terminals start to receive the second data; after the playback of the first data is completed, the analysis terminal simultaneously sends an end instruction to the acquisition and playback instrument and multiple mobile terminals, the acquisition and playback instrument stops playing back the second data, and at the same time, multiple mobile terminals stop receiving the second data; during the playback process, multiple mobile terminals perform positioning when the analysis terminal sends a positioning command, obtain positioning data, and send it to the analysis terminal in real time; the analysis terminal outputs indoor positioning performance test data based on the first data and the positioning data.

[0017] In one embodiment, during the collection, the method further includes:

[0018] The acquisition and playback instrument sends the scene file to the wearable pedestrian navigation device;

[0019] When arriving at the test point, the wearable pedestrian navigation device sets a marking command and collects the corresponding test time and test location at the same time, and when sending a stop instruction, generates the first data according to the marking command, the test time, the test location, the scenario file, the start time and the end time.

[0020] In one embodiment, the analysis terminal sends a positioning command, specifically:

[0021] According to the first data, when the analysis terminal recognizes the marking command, it sends a positioning command to the plurality of mobile terminals.

[0022] In one embodiment, obtaining the positioning data and sending it to the analysis terminal specifically involves:

[0023] The mobile terminal receives the positioning command to initiate positioning, and collects the first positioning duration, location coordinates, positioning time, positioning delay, positioning source and positioning type to generate the positioning data, and sends the positioning data to the analysis terminal.

[0024] The above-mentioned system and method for testing the indoor positioning performance of mobile terminals, through synchronous control and test point marking, can correspond the replayed Wi-Fi signal to the specific location coordinates of a test point. It can test the positioning performance of mobile terminals without the need for pre-configured environment, and can be tested on-the-go, which is convenient and fast. After collecting off-site data once, unlimited replay tests can be performed in a laboratory (darkroom) environment, greatly simplifying the testing process and effectively reducing testing costs. It supports simultaneous collection and testing of multiple mobile terminals, further improving test efficiency. During the playback test, the mobile terminal under test can be connected to the broadband network via Ethernet, and the network quality is stable and reliable, and the tested Wi-Fi positioning performance is more realistic and accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is an architecture diagram of a system for indoor positioning performance testing of a mobile terminal during acquisition in one embodiment;

[0026] Figure 2 This is an architectural diagram of a system for testing indoor positioning performance of a mobile terminal during playback in one embodiment;

[0027] Figure 3 The figure is a flow chart of a method for testing indoor positioning performance of a mobile terminal in one embodiment.

[0028] Reference numerals:

[0029] Wearable pedestrian navigation device 1, acquisition and playback device 2, mobile terminal 3, analysis terminal 4. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of this application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely for explaining this application and are not intended to limit this application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in this application without creative work are within the scope of protection of this application.

[0031] It should be noted that all directional indications in the embodiments of the present application (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, the terms "first," "second," and so on, used in this application are for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this application, "multiple groups" means at least two groups, such as two groups, three groups, and so on, unless otherwise specifically defined.

[0033] In this application, unless otherwise specified or limited, the terms "connect," "fix," etc. should be understood in a broad sense. For example, "fix" can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection, an electrical connection, a physical connection, or a wireless communication connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two elements or an interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0034] In addition, the technical solutions between the various embodiments of the present application can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0035] This application provides a system for testing the indoor positioning performance of a mobile terminal. Figure 1 and Figure 2 As shown, in one embodiment, it includes: a wearable pedestrian navigation device, a collection and playback device, multiple mobile terminals and an analysis terminal.

[0036] The Wearable Pedestrian Navigation System (INPS) uses a combination of RTK and inertial navigation to acquire high-precision positioning data. This system utilizes existing, proven equipment. During testing, the INPS moves in sync with the acquisition and playback device to synchronize their progress. Operations such as sending acquisition commands, stopping commands, and setting markers can be performed simply by downloading the mobile app and using the INPS handheld terminal, eliminating the need to operate multiple devices. Figure 1 In the figure, A is the handheld terminal, B is the wireless transmission, and C is the navigation module.

[0037] The acquisition and playback instrument is a device used to acquire signals and play them back, and a mature device in the existing technology can be used.

[0038] The mobile terminal is the device that needs to be tested, usually a mobile phone.

[0039] The analysis terminal is used to organize and analyze data collected from multiple mobile terminals and wearable pedestrian navigation devices, test the positioning performance of multiple mobile terminals, and generate test data; the analysis terminal can be selected as a PC and pre-installed with wlantest software.

[0040] During data collection, the wearable pedestrian navigation device and the data collection and playback device are connected via a network. Specifically, the wearable pedestrian navigation device and the data collection and playback device are connected via Bluetooth.

[0041] During playback, the analysis terminal is electrically connected to the acquisition and playback device and the multiple mobile terminals, and the acquisition and playback device is connected to the multiple mobile terminals via a network. Specifically, the analysis terminal is connected to the acquisition and playback device via a USB connection, the analysis terminal is connected to the multiple mobile terminals via a network cable, and the acquisition and playback device is connected to the multiple mobile terminals via Wi-Fi.

[0042] The analysis terminal is pre-installed with indoor positioning test software to analyze the positioning data of the mobile terminal and output the performance test data of indoor positioning.

[0043] It should be noted that the acquisition and playback device, multiple mobile terminals, analysis terminals and indoor positioning test software are all existing technologies.

[0044] Wearable pedestrian navigation equipment can adopt existing technology. Preferably, the wearable pedestrian navigation equipment adopts a foot-mounted IMU. In order to suppress the inherent defect of heading drift of the inertial navigation in an indoor environment without RTK, on ​​the one hand, a zero-speed correction algorithm (existing technology) is adopted, and on the other hand, an inter-foot ultrasonic ranging module (existing technology) is added to significantly suppress the divergence of the heading angle. In addition, during the acquisition, the test route starts from an unobstructed outdoor environment to obtain an accurate starting position through RTK; a walking track of 10 to 20 meters is guaranteed outdoors. Through this track, even if entering the room, the inertial navigation can obtain an accurate initial heading; after entering the room and completing the test, it is necessary to return to the starting position outdoors, that is, the entire track is required to achieve a closed loop. The wearable pedestrian navigation equipment can automatically adjust the parameters offline, take the overlap of the starting and ending points as a known condition, and use the dichotomy method to adjust the parameters of the above-mentioned zero-speed correction algorithm until the error of the starting and ending distances is minimized, thereby obtaining a more accurate first data.

[0045] The system for testing the indoor positioning performance of mobile devices uses synchronous control and test point marking to ensure that the replayed Wi-Fi signal corresponds to the specific location coordinates of a test point. It can test the positioning performance of mobile devices without pre-configured environment, allowing for convenient and quick testing on-the-go. After collecting data off-site once, an unlimited number of replay tests can be performed in a laboratory (darkroom) environment, greatly simplifying the testing process and effectively reducing testing costs. The system supports simultaneous collection and testing of multiple mobile devices, allowing data from different batches of mobile devices to be processed and identified simultaneously, with no limit on the quantity, further improving testing efficiency. During the replay test, the mobile device under test can be connected to a broadband network via Ethernet, ensuring stable and reliable network quality and more accurate Wi-Fi positioning performance.

[0046] This application also provides a method for testing the indoor positioning performance of a mobile terminal, using a system for testing the indoor positioning performance of a mobile terminal, such as Figure 3 As shown, in one embodiment, the following steps are included:

[0047] Step 302, during collection: the wearable pedestrian navigation device and the collection and playback instrument move synchronously, the wearable pedestrian navigation device sends a collection instruction to the collection and playback instrument, the collection and playback instrument starts collecting wireless signals, and stops collecting when receiving a stop instruction sent by the wearable pedestrian navigation device, thereby obtaining the first data collected by the wearable pedestrian navigation device and the second data collected by the collection and playback instrument.

[0048] Step 304, during playback: the analysis terminal receives the first data and plays it back, and simultaneously sends a start instruction to the acquisition and playback instrument and multiple mobile terminals; the acquisition and playback instrument starts to play back the second data, and at the same time, the multiple mobile terminals start to receive the second data; after the playback of the first data is completed, the analysis terminal simultaneously sends an end instruction to the acquisition and playback instrument and the multiple mobile terminals, the acquisition and playback instrument stops playing back the second data, and at the same time, the multiple mobile terminals stop receiving the second data; during the playback process, the multiple mobile terminals perform positioning when the analysis terminal sends a positioning command, obtain positioning data, and send it to the analysis terminal in real time; the analysis terminal outputs indoor positioning performance test data based on the first data and the positioning data.

[0049] In one embodiment, the steps include:

[0050] During collection: the wearable pedestrian navigation device and the collection and playback instrument move synchronously (to ensure that the collection and playback instrument has a changing signal), the wearable pedestrian navigation device sends a collection instruction to the collection and playback instrument, the collection and playback instrument starts collecting wireless signals (i.e., Wi-Fi signals), and stops collecting when it receives a stop instruction sent by the wearable pedestrian navigation device, and sends a scene file to the wearable pedestrian navigation device to obtain the first data collected by the wearable pedestrian navigation device and the second data collected by the collection and playback instrument (i.e., the collected Wi-Fi signal); when reaching the test point during the synchronous movement process, the wearable pedestrian navigation device sets a mark command (specifically, it can be achieved by clicking the mark button), and at the same time collects the corresponding test time (time of arrival at the test point) and test position (position coordinates of the test point), and when sending a stop instruction, generates the first data according to the mark command, test time, test position, scene file, start time and end time. It should be noted that there can be multiple test points, so there are multiple corresponding marking commands, test times and test positions in the first data; there can also be multiple test scenes, each test scene includes several test points, so the scene file in the first data refers to a file containing all test point information and scene file names under a certain scene; the start time refers to the time when the collection starts, and the end time refers to the time when the collection ends.

[0051] During playback: the analysis terminal receives the first data and plays it back, and simultaneously sends a start instruction to the collection and playback device and multiple mobile terminals; the collection and playback device starts to play back the second data, and at the same time, the multiple mobile terminals start to receive the second data and start to collect positioning data; after the playback of the first data is completed, the analysis terminal simultaneously sends an end instruction to the collection and playback device and multiple mobile terminals, the collection and playback device stops playing back the second data, and at the same time, the multiple mobile terminals stop receiving the second data and stop collecting positioning data; during the playback process, according to the first data, when the analysis terminal recognizes the marking command, it sends a positioning command to the multiple mobile terminals, the mobile terminals receive the positioning command to initiate positioning, and collect the first positioning time (the time taken from initiating positioning to successful positioning), position coordinates, positioning time (the time from receiving the positioning command and initiating positioning), positioning delay, positioning source and positioning type to generate positioning data, and send the positioning data to the analysis terminal; the analysis terminal compares the position coordinates in the first data and the positioning data based on the first data and the positioning data, obtains the horizontal error, positioning time, overall deviation and the statistical value after removing the overall deviation, generates statistical charts and test reports as performance test data for indoor positioning and outputs them.

[0052] Note: Playback must be performed in a shielded room to block external Wi-Fi interference; multiple mobile devices are connected to the network via network cables to reduce the impact of network fluctuations on positioning.

[0053] The above-mentioned method for testing the indoor positioning performance of a mobile terminal is divided into field data collection and darkroom signal playback testing. During the field data collection process, the tester configures a wearable pedestrian navigation device, moves synchronously with the collection and playback instrument, and collects data. After the collection is completed, the wearable pedestrian navigation device sends the first data to the analysis terminal. During the darkroom signal playback test, the analysis terminal simultaneously sends a start instruction to the collection and playback instrument and the mobile terminal. The collection and playback instrument starts playback, and the mobile terminal starts receiving and initiates positioning when receiving the positioning command from the analysis terminal, generates positioning data and sends it to the analysis terminal. The analysis terminal processes the positioning data, counts key indicators such as horizontal positioning accuracy and first positioning time, compares them with the first data, and generates test data such as charts and reports. This method can be used for playback testing of WLAN indoor positioning performance of mobile terminals such as mobile phones, supports automatic multiple testing in multiple scenarios, and can ensure the consistency of multiple tests.

[0054] It should be understood that although Figure 3 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figure 3 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0055] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A system for testing indoor positioning performance of a mobile terminal, characterized in that: The system is used to test the indoor Wi-Fi positioning performance of mobile terminals, and the playback test needs to be conducted in a shielded room environment. It includes: a wearable pedestrian navigation device, a collection and playback instrument, multiple mobile terminals, and an analysis terminal; During data collection, the wearable pedestrian navigation device and the data collection and playback device are connected via a network; During playback, the analysis terminal is electrically connected to the acquisition and playback instrument and the plurality of mobile terminals, and the acquisition and playback instrument is connected to the plurality of mobile terminals via a network. The wearable pedestrian navigation device uses a foot-strap IMU, combined with a zero-speed correction algorithm and an inter-foot ultrasonic ranging module, to suppress heading angle divergence in an indoor environment without RTK. During data collection, the wearable pedestrian navigation device moves synchronously with the data collection and playback instrument, and the wearable pedestrian navigation device sends collection instructions and stop instructions to the data collection and playback instrument. Based on the system for testing the indoor positioning performance of a mobile terminal, a method for testing the indoor positioning performance of a mobile terminal is also provided, comprising: During collection: the wearable pedestrian navigation device and the collection and playback instrument move synchronously, the wearable pedestrian navigation device sends a collection instruction to the collection and playback instrument, the collection and playback instrument starts to collect wireless signals, and stops collecting when receiving a stop instruction sent by the wearable pedestrian navigation device, thereby obtaining the first data collected by the wearable pedestrian navigation device and the second data collected by the collection and playback instrument; During playback: the analysis terminal receives the first data and plays it back, and simultaneously sends a start instruction to the acquisition and playback instrument and the multiple mobile terminals; the acquisition and playback instrument starts to play back the second data, and at the same time, the multiple mobile terminals start to receive the second data; after the playback of the first data is completed, the analysis terminal simultaneously sends an end instruction to the acquisition and playback instrument and the multiple mobile terminals, the acquisition and playback instrument stops playing back the second data, and at the same time, the multiple mobile terminals stop receiving the second data; during the playback process, the multiple mobile terminals perform positioning when the analysis terminal sends a positioning command, obtain positioning data, and send it to the analysis terminal in real time; the analysis terminal outputs indoor positioning performance test data based on the first data and the positioning data; During the collection process, the wearable pedestrian navigation device sets a mark command when arriving at the test point, and simultaneously collects and records the test time and test location; the signal collected by the collection and playback instrument is a Wi-Fi signal, which is used to simulate an indoor Wi-Fi positioning scenario during playback.

2. The system for testing indoor positioning performance of a mobile terminal according to claim 1, characterized in that: The wearable pedestrian navigation device is connected to the acquisition and playback instrument using Bluetooth.

3. The system for testing indoor positioning performance of a mobile terminal according to claim 1 or 2, characterized in that: The analysis terminal is connected to the acquisition and playback instrument using a USB connection.

4. The system for testing indoor positioning performance of a mobile terminal according to claim 1 or 2, characterized in that: The analysis terminal is connected to the multiple mobile terminals respectively using network cables.

5. The system for testing indoor positioning performance of a mobile terminal according to claim 1 or 2, characterized in that: The acquisition and playback device is connected to the multiple mobile terminals respectively using Wi-Fi.

6. The system for testing indoor positioning performance of a mobile terminal according to claim 1 or 2, characterized in that: The analysis terminal is pre-installed with indoor positioning test software.

7. The system for testing indoor positioning performance of a mobile terminal according to claim 1, characterized in that: Also includes: The acquisition and playback instrument sends the scene file to the wearable pedestrian navigation device; When arriving at the test point, the wearable pedestrian navigation device sets a marking command and collects the corresponding test time and test location at the same time, and when sending a stop instruction, generates the first data according to the marking command, the test time, the test location, the scenario file, the start time and the end time.

8. The system for testing indoor positioning performance of a mobile terminal according to claim 7, characterized in that: The analysis terminal sends a positioning command, specifically: According to the first data, when the analysis terminal recognizes the marking command, it sends a positioning command to the plurality of mobile terminals.

9. The system for testing indoor positioning performance of a mobile terminal according to claim 8, characterized in that: The positioning data is obtained and sent to the analysis terminal, specifically: The mobile terminal receives the positioning command to initiate positioning, and collects the first positioning duration, location coordinates, positioning time, positioning delay, positioning source and positioning type to generate the positioning data, and sends the positioning data to the analysis terminal.

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