CN106452620B - Method and system for testing receiving performance of wireless terminal - Google Patents
Method and system for testing receiving performance of wireless terminal Download PDFInfo
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- CN106452620B CN106452620B CN201610959159.5A CN201610959159A CN106452620B CN 106452620 B CN106452620 B CN 106452620B CN 201610959159 A CN201610959159 A CN 201610959159A CN 106452620 B CN106452620 B CN 106452620B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/20—Monitoring; Testing of receivers
- H04B17/29—Performance testing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/391—Modelling the propagation channel
- H04B17/3912—Simulation models, e.g. distribution of spectral power density or received signal strength indicator [RSSI] for a given geographic region
Abstract
The invention discloses a method and a system for testing the receiving performance of a wireless terminal, wherein the method comprises the following steps: placing a wireless terminal to be positioned at a preset position of a preset open environment; respectively placing a wireless routing end or a wireless access node at a strong signal test position, a medium signal test position and a weak signal test position in an open environment; when the wireless terminal receives the signal, measuring the maximum receiving data rate of the wireless terminal when the wireless router is positioned at the current test position; when the wireless router or the wireless access node is positioned at the strong signal test position, the medium signal test position and the weak signal test position, the maximum receiving data rate of the wireless terminal is greater than the preset qualified quantitative value corresponding to the test position, and the wireless terminal is judged to be qualified; otherwise, judging that the wireless terminal is unqualified. The open type test environment of the invention is close to the use environment of the wireless terminal, the interference of the signal in the test is equivalent to that in the use, the WiFi use environment is simulated really, and the accuracy of the wireless terminal receiving performance test is improved.
Description
Technical Field
The invention relates to the technical field of radio frequency testing, in particular to a method and a system for testing the receiving performance of a wireless terminal.
Background
With the maturity and development of wireless communication technology, wireless products and wireless applications appear in the Field of vision of people endlessly, such as WiFi, Bluetooth, Zigbee module Zigbee, near Field communication nfc (near Field communication), etc. WiFi, the most popular wireless technology in this communication era, is also becoming closer to our lives. For example, the device for establishing the wireless local area network: a wireless Router (WiFi Router), a wireless AP (WiFi Access Point, wireless Access node), a Bridge (Network Bridge), and the like; various intelligent terminal devices (WiFi STA) needing to be connected into wireless local area network for communication: smart TV, Smart TV box, mobile phone, Tablet PC, Notebook, etc.
How to measure and test the performance and the qualification of the abundant WiFi products is necessary work before mass production, otherwise, unqualified WiFi products bring poor wireless application experience and bring strong negative effects to the whole machine. Currently, before mass production, manufacturers generally first perform a separate hardware performance test (according to the theoretical definition of WiFi or 802.11) on the WiFi module, such as the basic parameters: the test is a basic essential process for ensuring the qualified performance of basic hardware of the WiFi module, and general suppliers can strictly test the WiFi module. Then, a test of wireless throughput reflecting the data communication capability of the WiFi software and hardware is performed, which is also necessary, because the hardware measurement of the WiFi module itself cannot reflect the overall WiFi performance, and the use of the WiFi module requires the loading and matching of the overall system, such as firmware used inside the WiFi module, WiFi driver, WiFi upper layer configuration and application.
In order to measure the WiFi performance based on the whole system, a measurement method based on the system is needed, so far, a throughput measurement means of an analog data transceiver such as Iperf-i-ichhoriot is generally used, and wireless throughput measurement is performed on WiFi STA products such as smart televisions, smart phones and the like through a WiFi software and hardware layer channel based on the system, generally, a radio frequency end of a WiFi transmitting device (for example, WiFi Router) is forcibly attenuated in a dark room environment, and a maximum Received data rate is measured when a Signal Strength indicator (RSSIR) (Received Signal Strength Indication) Received by WiFi weak Signal Strength, an optional part of a wireless transmitting layer is used for determining link quality and increasing broadcast transmission Strength) is generally about-70 dbm.
Through a hardware basic parameter qualification test of an independent module and a data throughput simulation test penetrating a WiFi software and hardware layer, the WiFi experience can be basically guaranteed to have no big risk problem, but many WiFi related problems exist in the market. The most important problem is that the existing test is basically performed in a closed environment, the use scene of the WiFi is performed in various open environments (families, offices, outdoor streets and the like), and for the WiFi STA receiving end product, the received wireless signal is interfered, and the test accuracy is directly low due to the difference between the test environment and the use environment.
Disclosure of Invention
The invention mainly aims to provide a method and a device for testing the receiving performance of a wireless terminal, aiming at truly simulating the use environment of WiFi and improving the accuracy of the test of the receiving performance of the wireless terminal.
In order to achieve the above object, a method for testing the receiving performance of a wireless terminal provided by the present invention comprises the following steps:
placing a wireless terminal to be positioned at a preset position of a preset open environment;
respectively placing a wireless routing end or a wireless access node for forwarding a wireless signal at a strong signal test position, a medium signal test position and a weak signal test position in the open environment;
when a wireless terminal receives a signal forwarded by a wireless routing end or a wireless access node, measuring the maximum receiving data rate of the wireless terminal when the wireless routing end is positioned at the current test position;
when the wireless router or the wireless access node is located at the strong signal testing position, the medium signal testing position and the weak signal testing position, the maximum receiving data rate of the wireless terminal is larger than a preset qualified quantitative value corresponding to the testing position, and the wireless terminal is judged to be qualified; otherwise, judging that the wireless terminal is unqualified.
Preferably, the step of placing the wireless router or the wireless access node forwarding the wireless signal at the strong signal testing position, the medium signal testing position, and the weak signal testing position in the open environment respectively includes:
selecting a candidate test position of the open environment according to three attenuation factors in a signal attenuation model;
constructing a wireless throughput testing architecture between the wireless terminal and the wireless routing end or between the wireless terminal and the wireless access node so as to measure the maximum receiving data rate of the wireless terminal under the transmitting end at the candidate testing position;
and determining a strong signal test position, a medium signal test position and a weak signal test position according to the measured maximum receiving data rate of the wireless terminal at the transmitting end of the candidate test position.
Preferably, the open environment is capable of satisfying straight-line distance attenuation, obstacle attenuation, and multipath effects of wireless signals.
Preferably, the step of placing the wireless terminal to be located at the preset position of the preset open environment comprises:
judging whether the sight distance of an open space is within a preset range or not and whether a plurality of rooms are arranged in the open space or not;
if yes, checking the use condition of the frequency spectrum occupied by the WiFi signal of the set frequency band;
and when the transmitting signals are not received or the number of the received transmitting signals is lower than the preset number, determining that the open space is an open environment.
Preferably, the preset qualified quantitative value is 70% of the measured data of the qualified product at the current testing position.
In addition, to achieve the above object, the present invention further provides a system for testing the receiving performance of a wireless terminal, including:
the wireless throughput testing module is set up between the wireless routing end and the wireless terminal or between the wireless access node and the wireless terminal; the wireless access node is used for measuring the maximum receiving data rate of the wireless terminal which is positioned at a preset position when the wireless router or the wireless access node is placed at any selected current test position among a strong signal test position, a weak signal test position and a medium signal test position; the strong signal testing position, the medium signal testing position, the weak signal testing position and the preset position are all positioned in an open environment;
the first judging module is used for judging that the wireless terminal is qualified when the maximum receiving data rates of the wireless terminal are all larger than the qualified quantitative values corresponding to the testing positions; otherwise, judging that the wireless terminal is unqualified.
Preferably, the system for testing the receiving performance of the wireless terminal further comprises a position determining module, and the position determining module comprises:
the selection module is used for selecting the candidate test position of the open environment according to three attenuation factors in the signal attenuation model;
the position testing module is used for measuring the maximum receiving data rate of the wireless terminal under the transmitting end at the candidate testing position;
the first determining module is used for determining a strong signal testing position, a medium signal testing position and a weak signal testing position according to the measured maximum receiving data rate of the wireless terminal at the transmitting end of the candidate testing position.
Preferably, in the position determination module, the open environment can satisfy straight-line distance attenuation, obstacle attenuation, and multipath effects of wireless signals.
Preferably, the system for testing the reception performance of the wireless terminal further includes an environment confirmation module, and the environment confirmation module includes:
the second judgment module is used for judging whether the sight distance of an open space is within a preset range or not and whether a plurality of rooms are arranged in the open space or not;
the checking module is used for checking the use condition of the frequency spectrum occupied by the WiFi signals of the set frequency band when the sight distance of the open space is within a preset range and a plurality of rooms are arranged in the open space;
and the second determining module is used for determining that the open space is an open environment when the transmitting signals are not received or the number of the received transmitting signals is lower than the preset number.
Preferably, in the first determining module, the preset qualified quantitative value is 70% of the measured data of the qualified product at the current testing position.
The technical scheme of the invention comprises the steps of firstly selecting an open environment, then selecting a preset position in the open environment, and fixedly placing a wireless terminal; selecting a strong signal test position, a weak signal test position and a middle signal test position in an open environment for placing a wireless routing end or a wireless access node, wherein when the wireless routing end or the wireless access node is placed at the strong signal test position, the wireless routing end or the wireless access node is wirelessly linked with a wireless terminal, and at the moment, a signal received by the wireless terminal and forwarded by the wireless routing end or the wireless access node is mainly attenuated by a straight-line distance, the signal strength and the quality are high, and the wireless terminal is tested for the receiving performance in a strong signal state by a wireless throughput test module; when the wireless routing end or the wireless access node is arranged at a weak signal testing position, signals received by the wireless terminal and forwarded by the wireless routing end or the wireless access node are mainly attenuated by an obstacle, the signal strength and the quality are low, and the receiving performance of the wireless terminal in a weak signal state is tested through the wireless throughput testing module; when the wireless routing end or the wireless access node is arranged at a middle signal testing position, the signal which is received by the wireless terminal and forwarded by the wireless routing end or the wireless access node is mainly attenuated by the multipath effect, the signal strength and the quality are between the signal strength and the signal quality, and the receiving performance of the wireless terminal in a middle signal state is tested by the wireless throughput testing module; because the open type test environment is closer to the use environment of the wireless terminal product, the interference of the wireless signal received by the wireless terminal product in the test process is approximately equal to the interference received in the use process, the use environment of the WiFi can be truly simulated by the method, and the accuracy of the wireless terminal receiving performance test is improved.
Drawings
FIG. 1 is a flowchart illustrating a method for testing the receiving performance of a wireless terminal according to a first embodiment of the present invention;
FIG. 2 is a diagram showing the layout of an open environment and test sites in a first embodiment of a method for testing the reception performance of a wireless terminal according to the present invention;
FIG. 3 is a schematic diagram illustrating connection between a data transmitting terminal, a radio frequency terminal and a wireless terminal according to a first embodiment of the method for testing the receiving performance of a wireless terminal of the present invention;
FIG. 4 is a flowchart illustrating a second embodiment of a method for testing the receiving performance of a wireless terminal according to the present invention;
FIG. 5 is a flowchart illustrating a third embodiment of a method for testing the receiving performance of a wireless terminal according to the present invention;
FIG. 6 is a functional block diagram of a system for testing the reception performance of a wireless terminal according to a first embodiment of the present invention;
FIG. 7 is a diagram illustrating a detailed functional block diagram of a position determination module in a second embodiment of a system for testing the reception performance of a wireless terminal according to the present invention;
fig. 8 is a schematic diagram of a detailed functional module of an environment determination module in a third embodiment of a system for testing the receiving performance of a wireless terminal according to the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The invention provides a method for testing the receiving performance of a wireless terminal, and referring to fig. 1, in one embodiment, the method comprises the following steps:
step S40, placing a wireless terminal to be tested at a preset position of a preset open environment;
a space with the visual distance of about 15 meters can be selected, and the space is a comprehensive ideal environment which fully meets the requirements of wireless signal straight-line distance attenuation, obstacle attenuation and multipath effect test; the space can also contain a plurality of smaller spaces inside; the method is more approximate to the actual use environment (family residence, office, shop, etc.), a fixed position is selected as a preset position in the preset open environment, and the wireless terminal is placed at the preset position.
Step S80, placing the wireless router or the wireless access node which transmits the wireless signal at the strong signal testing position, the medium signal testing position and the weak signal testing position in the open environment;
in one embodiment of the invention, the linear distance between the preset position and the strong signal testing position is 3.5-4.5 meters; two walls are arranged between the preset position and the weak signal testing position, and a connecting line between the preset position and the strong signal testing position penetrates through the two walls; a wall is arranged between the preset position and the middle signal testing position, and a connecting line between the preset position and the middle signal testing position penetrates through the wall; the distance between the middle signal testing position and the wall is more than 3.5 meters.
The wireless signal between the preset position and the strong signal test position is transmitted in a straight line, the WiFi STA receiving signal is mainly the electromagnetic wave energy which is transmitted by the WiFi Router and remains after being attenuated by a straight line distance, and the WiFi STA is used for quantitative evaluation test of the WiFi STA in a strong signal receiving state due to small attenuation of the straight line distance; the wireless signal between the preset position and the weak signal test position passes through the obstacle, the WiFi STA receives the residual electromagnetic wave energy which is mainly transmitted by the WiFi Router and penetrates through the wall, and the obstacle passing attenuation is large, so that the method can be used for quantitative evaluation test of the WiFi STA in the weak signal receiving state; the wireless signal transmission between the preset position and the middle signal testing position neutralizes the two conditions, the wireless signal has obstacles in the straight line transmission direction, but the obstacles do not reach the crossing degree or thickness of the obstacles; the WiFi STA receives the superposed energy which is mainly forwarded by the WiFi Router and is reflected by the multi-paths, can be used for quantitative evaluation test of the WiFi STA in a medium signal state, and can be tested by using a preset position and a medium signal test position.
Fig. 2 is a selected spatial home structure satisfying the conditions, wherein a solid line is a wall, a dotted line is glass, and a dot-dash line is a door, wherein a preset position 1 is located in a living room, a WiFi STA is fixedly placed at the preset position 1, and a strong signal testing position 2 is selected at a linear distance of 4 meters from the preset position 1 in the living room; the weak signal testing position 3 is selected to be positioned in a main bedroom separated from the living room by two walls, the middle signal testing position 4 is selected to be positioned in a secondary bedroom obliquely opposite to the doorway of the living room, and can also be selected to be positioned in a hollow chamber separated from the living room by one wall.
Selecting any one position from a strong signal test position, a weak signal test position and a middle signal test position as a current test position, and placing a wireless routing end or a wireless access node in the current test position; the wireless Router or the wireless access node is configured to forward a wireless signal sent by the wireless transmitter, and in this embodiment, a wireless Router (WiFi Router) is taken as an example for detailed description.
The self position selection of the wireless routing end has no sequence, for example, the wireless routing end can be sequentially placed at a strong signal testing position, a medium signal testing position and a weak signal testing position; the wireless router end can also be sequentially placed at a strong signal testing position, a weak signal testing position and a medium signal testing position; the device can also be sequentially placed at a weak signal testing position, a medium signal testing position and a strong signal testing position.
The wireless terminal can be a smart television, a smart television box, a mobile phone, a tablet computer or a notebook computer and the like.
Step S90, when the wireless terminal receives the signal transmitted by the wireless router or the wireless access node, the maximum receiving data rate of the wireless terminal when the wireless router is at the current testing position is measured;
a wireless throughput testing architecture (namely a wireless throughput testing module) is set up between a wireless terminal WiFi STA and a WiFi Router, and Ixchaiot/Endpoint throughput testing software is utilized. Further referring to fig. 3, the Wireless AP (corresponding to the Wireless router 30) corresponds to the strong signal testing position 2 (refer to point a in fig. 2), the weak signal testing position 3 (refer to point B in fig. 2), and the transmission signal position of the medium signal testing position 4 (refer to point C, point D, and point E in fig. 2), the PC2 corresponds to the WiFi STA, the Wireless Card accesses the PC2 (corresponding to the Wireless terminal 20) through the usb, the PC1 serves as the transmission end of data, and the data is forwarded through the Wireless AP and then transmitted to the PC2 through the WiFi, and by using the architecture, the maximum received data rate (Mbps) of the WiFi STA corresponding to the transmission end at A, B, C, D, E point can be measured, under various signal qualities (RSSI can be used as one of the reference factors).
Step S100, when the wireless router or the wireless access node is located at a strong signal testing position, a medium signal testing position and a weak signal testing position, the maximum receiving data rate of the wireless terminal is greater than a preset qualified quantitative value corresponding to the testing position, and the wireless terminal is judged to be qualified; otherwise, judging that the wireless terminal is unqualified.
After the WiFi STA records the RSSI value of the received signal strength when the wireless AP5 is at A, B, C, D, E point, the maximum signal strength value that the WiFi STA can receive when the instider wireless scanning tool can be used to detect the signal point that corresponds to A, B, C, D, E point.
And when the maximum receiving data rate of the wireless terminal is greater than the qualified quantitative value of the standard data of the current test position, judging that the wireless terminal is qualified, otherwise, judging that the wireless terminal is unqualified.
The qualified quantitative value of the standard data of the current test position can be set according to the measured data of a qualified product, for example, a strong signal test position is selected as the current position, the test is that the receiving performance of the wireless terminal product is tested after attenuation is mainly caused by the straight-line distance, the received measured data needs to be compared with the qualified quantitative value of the standard data in a strong signal state (corresponding to the qualified quantitative value of the standard data after attenuation of the straight-line distance), when the received measured data is greater than the qualified quantitative value of the standard data of the current test position, the wireless terminal is judged to be qualified, and otherwise, the wireless terminal is judged to be unqualified.
According to the technical scheme, firstly, an open environment meeting the test requirements is selected, then a preset position 1 is selected in the open environment, and a wireless terminal is fixedly placed; selecting a strong signal test position 2, a weak signal test position 3 and a middle signal test position 4 for placing a wireless routing end or a wireless access node, wherein when the wireless routing end or the wireless access node is placed at the strong signal test position 2, the wireless routing end is wirelessly linked with a wireless terminal or the wireless access node is wirelessly linked with the wireless terminal, at the moment, a wireless signal received by the wireless terminal and forwarded by the wireless routing end or the wireless access node is mainly attenuated by a straight-line distance, the signal strength and the quality are high, and the wireless throughput test module is used for testing the receiving performance of the wireless terminal in a strong signal state; when the wireless routing end or the wireless access node is arranged at the weak signal testing position 3, the wireless signal received by the wireless terminal and forwarded by the wireless routing end or the wireless access node is mainly attenuated by an obstacle, the signal strength and the quality are low, and the receiving performance of the wireless terminal in a weak signal state is tested through the wireless throughput testing module; when the wireless routing end or the wireless access node is arranged at the middle signal testing position 4, the wireless signal received by the wireless terminal and forwarded by the wireless routing end or the wireless access node is mainly attenuated due to multipath effect, the signal strength and the quality are between the wireless routing end and the wireless access node, and the receiving performance of the wireless terminal in a middle signal state is tested through the wireless throughput testing module; because the open type test environment is closer to the use environment of the wireless terminal product, the interference of the wireless signal received by the wireless terminal product in the test process is approximately equal to the interference received in the use process, the use environment of the WiFi can be truly simulated by the method, and the accuracy of the wireless terminal receiving performance test is improved.
As an example II
On the basis of the first embodiment, referring to fig. 4, step S80 includes:
step S50, selecting candidate test positions of the open environment according to three attenuation factors in a signal attenuation model;
according to three attenuation factors (straight-line distance attenuation, obstacle attenuation, multipath effect) in the signal attenuation model:
the point A is used as a WiFi hot spot strong signal test point, the WiFi signal propagation theory can be completely explained, the point A is a linear signal transmission model in a sight distance range, and the linear distance is about 4 meters approximately;
the B point is used as a WiFi hotspot weak signal test point, the WiFi signal propagation theory can be completely explained, signals received by a WiFi STA mainly come from energy left after radio-emitted magnetic waves penetrate two walls, and the rest energy is weaker after the radio-emitted magnetic waves are attenuated;
the points C, D and E are used as signal test points in WiFi hotspots, and the theory of WiFi signal propagation can also be completely explained, where part of the signal received by the WiFi STA comes from energy after penetrating a wall, and most of the signal comes from the superimposed signal of multipath transmission.
A. B, C the strong, medium and weak states of the transmitted signal are completely covered by three points, which can cover the most of outdoor environment where it can communicate normally.
Step S60, building a wireless throughput testing structure between the wireless terminal and the wireless router or between the wireless terminal and the wireless access node, so as to measure the maximum receiving data rate of the wireless terminal under the transmitting terminal at the candidate testing position;
acquiring the use condition of a frequency spectrum occupied by a WiFi signal of a set frequency band; in the embodiment, WiFi signals of 2.4G frequency bands and 5G frequency bands are selected, and the use conditions of frequency spectrums occupied by the WiFi signals of the 2.4G frequency bands and the WiFi signals of the 5G frequency bands can be obtained and checked by using WiFi scanning software;
the surrounding WiFi environment is basically free of interference or small in interference, and the use conditions of the frequency spectrums occupied by WiFi signals of the WiFi2.4G frequency bands and the 5G frequency bands can be checked by using WiFi scanning software. The method can be obtained from the channel occupation distribution condition of a WiFi hotspot (signal transmitting equipment Router or AP) with a 2.4G frequency band, wherein the transmitting signals with RSSI of-80 dbm are more, the transmitting signals are transmitting points with weak signals (RSSI is less than-70 dbm), the interference is small enough to be ignored, SSID (Service Set Identifier, SSID for short is a general concept, ESSID and BSSID are included for distinguishing different networks, the SSID can enter different networks when the wireless network card is provided with different SSIDs, SSID is usually broadcast by the AP, the SSID in the current region can be checked through the scanning function of the XP, the SSID can not be broadcast due to safety consideration, and the SSID can enter the corresponding network when the SSID is manually Set by a user, the SSID is simply the name of a local area network, only computers with the same SSID value can communicate with each other), the hotspot with R7000-2.4G frequency band is the 2.4G signal of the WiFi hotspot to be selected in a model, therefore, only 1 SSID is a strong signal zxy in the entire 2.4G frequency band, which indicates that the WiFi environment is an open space with very little interference. The channel occupation distribution condition of the WiFi hotspot in the 5G frequency band can be obtained, the 5G frequency band only has one hotspot signal with the SSID of R7000-5G, and the hotspot signal is also the 5G signal of the WiFi Router to be selected in the model, which shows that the environment has no any interference signal.
Step S70, determining strong signal test position 2, medium signal test position 4, and weak signal test position 3 according to the measured maximum receiving data rate of the wireless terminal at the transmitting end of the candidate test position.
Selecting a hotspot with SSID of R7000 and a set frequency band as a model, and selecting a strongest signal in the model as a transmitting signal of a wireless routing end;
the method can be obtained from the channel occupation distribution condition of WiFi hotspots in a 2.4G frequency band, more transmitting signals with RSSI of-80 dbm are transmitting points with weaker signals, the interference is small enough to be ignored, the hotspot with SSID of R7000-2.4G is a 2.4G signal of WiFi Router to be selected in a model, and only 1 SSID of strong signals with zxy is in the whole 2.4G frequency band. The channel occupation distribution condition of the WiFi hotspot in the 5G frequency band can be obtained, and the 5G frequency band only has one hotspot signal with the SSID of R7000-5G, and is also the 5G signal of the WiFi Router to be selected in the model.
Recording all measurement data of the currently selected test point by using a data table so as to decide five standard test points with three different signal strengths and qualities at the fixed WiFi STA position, wherein the five standard test points are shown in a table 1; thus, point a is taken as the strong signal test position 2, point B is taken as the weak signal test position 3, and points C, D, E are taken as the medium signal test position 4.
Table 1: measurement data of wireless terminal at point A, B, C, D, E
EXAMPLE III
On the basis of the above embodiment, referring to fig. 5, step S40 is preceded by:
step S10, judging whether the sight distance of the open space is within a preset range and whether a plurality of rooms are in the open space;
the visual range of the selected space usually needs to meet 15 meters, and the measurement can be carried out through a distance measuring sensor, and the judgment is carried out by combining a judgment program in software; more than three rooms are needed in the open space, and the method can be specifically completed through a camera and a judgment program; if the conditions are met, the following steps are carried out, which is similar to the real environment, so that the test accuracy is higher;
step S20, if yes, checking the use condition of the frequency spectrum occupied by the WiFi signal of the set frequency band;
if the two conditions are met, further calling the frequency spectrum occupied by the WiFi signal of the set frequency band, and checking the use condition;
step S30, when the transmission signal is not received or the number of the received transmission signals is less than the preset number, determining that the open space is an open environment.
First, the wireless signal attenuation is greater in an open environment relative to a closed environment; secondly, in an open environment, for a WiFi STA receiving end product, a received wireless signal is more easily interfered; for example, when there is a room in an open space, the wireless signal needs to pass through an obstacle during propagation, and the attenuation is more severe than that when there is no room; therefore, a preset number or a preset number range is set, and when the number of the received signals is lower than the preset number range, the open space is determined to be an open environment.
Further, on the basis of the third embodiment, referring to table 2, the qualified quantitative value of the standard data of the current test position is 70% of the measured data of the qualified product at the current test position.
Because the potential interference of the whole software and hardware of the actual measurement WiFi STA equipment is considered, the throughput data, namely the loss of 30% of the measurement data can be used as a qualified quantitative value of standard data, when all the WiFi STA equipment to be measured is subjected to performance measurement in the model, the loss cannot be lower than the qualified quantitative value, otherwise, the result is recorded as unqualified, and the WiFi needs to be further subjected to software and hardware rectification. The qualified quantitative standard value is only the throughput tp (throughput) as shown in table 1 and table 2.
Table 2: three kinds of measuring data corresponding to signal strength and quality
The test can be carried out in the above way, a WiFi Router and a Wireless Card with better performance and market approval are selected, and the transceiving end is fully ensured not to have any problem related to the transceiving performance and the connection stability of WiFi. The most effective guarantee is made for the data model and the confirmation of the standard signal test point position, and then 70% of the measurement data corresponding to the test position is taken as a qualified quantitative value.
Referring to fig. 3 and 6, in an embodiment, corresponding to the first embodiment of the method for testing the receiving performance of the wireless terminal, the system for testing the receiving performance of the wireless terminal provided by the present invention includes a wireless throughput testing module 40 and a first determining module 50.
The wireless throughput testing module 40 is built between the wireless routing terminal 30 and the wireless terminal 20, or between the wireless access node and the wireless terminal 20; the wireless terminal device is used for measuring the maximum receiving data rate of the wireless terminal 20 positioned at a preset position when the wireless router 30 or the wireless access node is placed at any selected current test position of a strong signal test position, a weak signal test position and a medium signal test position; the strong signal testing position, the medium signal testing position, the weak signal testing position and the preset position are all positioned in an open environment;
the open environment can meet the linear distance weakness, obstacle attenuation and multipath effect of wireless signals; the wireless terminal receiving performance requirement of the test transmitting signal in a linear distance attenuation state is met between the preset position and the strong signal test position, the wireless terminal receiving performance requirement of the test transmitting signal in a barrier penetrating attenuation state is met between the preset position and the weak signal test position, and the wireless terminal receiving performance requirement of the test transmitting signal in a multipath effect attenuation state is met between the preset position and the medium signal test position; the wireless terminal receiving performance requirement of the test transmitting signal in a linear distance attenuation state is met between the preset position and the strong signal test position, the wireless terminal receiving performance requirement of the test transmitting signal in a barrier penetrating attenuation state is met between the preset position and the weak signal test position, and the wireless terminal receiving performance requirement of the test transmitting signal in a multipath effect attenuation state is met between the preset position and the medium signal test position;
a space of about 15 meters of sight distance can be selected, and the space is a comprehensive ideal environment which fully meets the requirements of the wireless signal straight line distance weakness, the barrier attenuation and the multipath effect test; the space can also contain a plurality of smaller spaces inside; the method is closer to the actual use environment (family residence, office, shop, etc.), and in one embodiment of the invention, the straight-line distance between the preset position and the strong signal testing position is 3.5-4.5 meters; two walls are arranged between the preset position and the weak signal testing position, and a connecting line between the preset position and the strong signal testing position penetrates through the two walls; a wall is arranged between the preset position and the intermediate signal testing position, and a connecting line between the preset position and the intermediate signal testing position penetrates through the wall; the distance between the middle signal testing position and the wall is more than 3.5 meters.
The method comprises the following steps that linear propagation of WiFi Router emission signals is satisfied between a preset position and a strong signal test position, and WiFi STA receiving signals are tested, and the linear propagation is used for quantitative evaluation test of the WiFi STA in a strong signal receiving state; if the WiFi STA receiving signals mainly come from residual electromagnetic wave energy of WiFi Router transmitting signals penetrating through a wall, the method can be used for quantitative evaluation test under the WiFi STA weak signal receiving state; the test can be carried out by utilizing a preset position and a strong signal test position; if the received signal of the WiFi STA mainly comes from the superposition energy of the multi-path reflection of the signal transmitted by the WiFi Router, the method can be used for quantitative evaluation test under the condition of intermediate signals of the WiFi STA, and can be used for testing by using a preset position and a signal test position.
Fig. 2 is a diagram of an optional spatial home structure satisfying conditions, wherein a preset position 1 is located in a living room, a WiFi STA is fixedly placed at the preset position 1, and a strong signal testing position 2 is selected at a linear distance of 4 meters from the preset position 1 in the living room; the weak signal testing position 3 is selected to be positioned in a main bedroom separated from the living room by two walls, the middle signal testing position 4 is selected to be positioned in a secondary bedroom obliquely opposite to the doorway of the living room, and can also be selected to be positioned in a hollow chamber separated from the living room by one wall.
The wireless terminal 20 is arranged at the preset position 1 and used for receiving wireless signals; the wireless terminal can be a smart television, a smart television box, a mobile phone, a tablet computer or a notebook computer and the like.
The wireless routing end 30 or the wireless access node is placed at any selected current test position of the strong signal test position 2, the weak signal test position 3 and the medium signal test position 4 and used for forwarding the wireless signal;
the position selection of the wireless routing end 30 or the wireless access node itself has no sequence, for example, the wireless routing end 30 or the wireless access node may be sequentially placed at the strong signal test position 2, the medium signal test position 4, and the weak signal test position 3; the wireless routing end 30 can also be sequentially placed at a strong signal testing position 2, a weak signal testing position 3 and a medium signal testing position 4; the test device can also be sequentially placed at a weak signal test position 3, a middle signal test position 4 and a strong signal test position 2.
A wireless throughput testing architecture (namely a wireless throughput testing module) is set up between a wireless terminal WiFi STA and a wireless Router terminal WiFi Router, and Ixchairot/Endpoint throughput testing software is utilized. Further referring to fig. 3, the Wireless AP5 (which may also be a Wireless router) corresponds to the transmission signal position of the strong signal test position 2 (refer to point a in fig. 2), the weak signal test position 3 (refer to point B in fig. 2), and the medium signal test position 4 (refer to point C, point D, and point E in fig. 2), the PC2 corresponds to a WiFi STA, the Wireless Card accesses the PC2 through the usb, the PC1 serves as a transmission end of data, and the data is forwarded through the AP5 and then transmitted to the PC2 through WiFi, and by using this architecture, the maximum received data rate (Mbps) of the WiFi STA corresponding to the transmission end at A, B, C, D, E point corresponding to various signal qualities (RSSI can be used as one of the reference factors) can be measured.
A first determining module 50, configured to determine that the wireless terminal 20 is qualified when the maximum received data rates of the wireless terminal 20 are all greater than the qualified quantitative values corresponding to the test positions; otherwise, the wireless terminal 20 is determined to be not qualified.
After the WiFi STA records the RSSI value of the received signal strength when the wireless AP is at point A, B, C, D, E, the maximum signal strength value that the WiFi STA can receive can be detected by using the instider wireless scanning tool when the corresponding A, B, C, D, E point transmitted signal point.
The qualified quantitative value of the standard data of the current test position can be set according to the measured data of a qualified product, for example, a strong signal test position is selected as the current position, the test is that the receiving performance of the wireless terminal product is tested after attenuation is mainly caused by the straight-line distance, the received measured data needs to be compared with the qualified quantitative value of the standard data in a strong signal state (corresponding to the qualified quantitative value of the standard data after attenuation of the straight-line distance), when the received measured data is greater than the qualified quantitative value of the standard data of the current test position, the wireless terminal is judged to be qualified, and otherwise, the wireless terminal is judged to be unqualified.
According to the technical scheme, firstly, an open environment meeting the test requirements is selected, then a preset position 1 is selected in the open environment, and a wireless terminal is fixedly placed; selecting a strong signal test position 2, a weak signal test position 3 and a middle signal test position 4 for placing a wireless routing end or a wireless access node, wherein when the wireless routing end or the wireless access node is placed at the strong signal test position 2, the wireless routing end is wirelessly linked with a wireless terminal or the wireless access node is wirelessly linked with the wireless terminal, at the moment, a wireless signal received by the wireless terminal and forwarded by the wireless routing end or the wireless access node is mainly attenuated by a straight-line distance, the signal strength and the quality are high, and the wireless throughput test module is used for testing the receiving performance of the wireless terminal in a strong signal state; when the wireless routing end or the wireless access node is arranged at the weak signal testing position 3, the wireless signal received by the wireless terminal and forwarded by the wireless routing end or the wireless access node is mainly attenuated by an obstacle, the signal strength and the quality are low, and the receiving performance of the wireless terminal in a weak signal state is tested through the wireless throughput testing module; when the wireless routing end or the wireless access node is arranged at the middle signal testing position 4, the wireless signal received by the wireless terminal and forwarded by the wireless routing end or the wireless access node is mainly attenuated due to multipath effect, the signal strength and the quality are between the wireless routing end and the wireless access node, and the receiving performance of the wireless terminal in a middle signal state is tested through the wireless throughput testing module; because the open type test environment is closer to the use environment of the wireless terminal product, the interference of the wireless signal received by the wireless terminal product in the test process is approximately equal to the interference received in the use process, the use environment of the WiFi can be truly simulated by the method, and the accuracy of the wireless terminal receiving performance test is improved.
Example two
Referring to fig. 7, corresponding to the second embodiment of the method for testing the receiving performance of the wireless terminal, the system further includes a position determining module 10, configured to determine a preset position, a strong signal testing position, a weak signal testing position, and a medium signal testing position in an open environment; the no position determination module 10 includes:
a selecting module 11, configured to select a candidate test position in the open environment according to three attenuation factors in a signal attenuation model;
according to three attenuation factors (straight-line distance attenuation, obstacle attenuation, multipath effect) in the signal attenuation model:
the point A is used as a WiFi hot spot strong signal test point, the WiFi signal propagation theory can be completely explained, the point A is a linear signal transmission model in a sight distance range, and the linear distance is about 4 meters approximately;
the B point is used as a WiFi hotspot weak signal test point, the WiFi signal propagation theory can be completely explained, signals received by a WiFi STA mainly come from energy left after radio-emitted magnetic waves penetrate two walls, and the rest energy is weaker after the radio-emitted magnetic waves are attenuated;
the point C, the point D and the point E are used as signal test points in a WiFi hotspot, the WiFi signal propagation theory can be completely explained, the signal part received by the WiFi STA comes from energy after penetrating a wall, and most of the signal part comes from a superposed signal of multipath emission.
A. B, C the strong, medium and weak states of the transmitted signal are completely covered by three points, which can cover the most of outdoor environment where it can communicate normally.
A position test module 12, configured to measure a maximum received data rate of the wireless terminal at a transmitting end at a candidate test position;
acquiring the use condition of a frequency spectrum occupied by a WiFi signal of a set frequency band; in the embodiment, WiFi signals of 2.4G frequency bands and 5G frequency bands are selected, and the use conditions of frequency spectrums occupied by the WiFi signals of the 2.4G frequency bands and the WiFi signals of the 5G frequency bands can be obtained and checked by using WiFi scanning software;
the surrounding WiFi environment is basically free of interference or small in interference, and the use conditions of the frequency spectrums occupied by WiFi signals of the WiFi2.4G frequency bands and the 5G frequency bands can be checked by using WiFi scanning software. The method can be obtained from the channel occupation distribution condition of a WiFi hotspot (signal transmitting equipment Router or AP) in a 2.4G frequency band, wherein the transmitting signals with RSSI of-80 dbm are more, the transmitting signals are transmitting points with weak signals (RSSI is less than-70 dbm), the interference is small enough to be ignored, SSID (Service Set Identifier, SSID for short is a general concept, ESSID and BSSID are included for distinguishing different networks, the SSID can enter different networks when the wireless network card is provided with different SSIDs, the SSID is usually broadcast by the AP, the SSID in the current region can be checked through the scanning function of the XP, the SSID can not be broadcast due to safety consideration, and at the moment, a user manually sets the SSID to enter the corresponding network, the SSID is simply the name of a local area network, only computers with the same SSID value can communicate with each other), the hotspot with R7000-2.4G is the WiFi hotspot to be selected in a model, therefore, only 1 SSID is a strong signal zxy in the entire 2.4G frequency band, which indicates that the WiFi environment is an open space with very little interference. The channel occupation distribution condition of the WiFi hotspot in the 5G frequency band can be obtained, the 5G frequency band only has one hotspot signal with the SSID of R7000-5G, and the hotspot signal is also the 5G signal of the WiFi Router to be selected in the model, which shows that the environment has no any interference signal.
The first determining module 13 is configured to determine a strong signal testing position, a medium signal testing position, and a weak signal testing position according to the measured maximum receiving data rate of the wireless terminal at the transmitting end of the candidate testing position.
Selecting a hotspot with SSID of R7000 and a set frequency band as a model, and selecting the strongest signal in the model as a transmitting signal of a wireless radio frequency end;
the method can be obtained from the channel occupation distribution condition of WiFi hotspots in a 2.4G frequency band, more transmitting signals with RSSI of-80 dbm are transmitting points with weaker signals, the interference is small enough to be ignored, the hotspot with SSID of R7000-2.4G is a 2.4G signal of WiFi Router to be selected in a model, and only 1 SSID of strong signals with zxy is in the whole 2.4G frequency band. The channel occupation distribution condition of the WiFi hotspot in the 5G frequency band can be obtained, and the 5G frequency band only has one hotspot signal with the SSID of R7000-5G, and is also the 5G signal of the WiFi Router to be selected in the model.
All measured data of the currently selected test point are recorded by a data table so as to decide five standard test points with three different signal strengths and qualities for the fixed WiFi STA position, see table 2.
EXAMPLE III
Corresponding to the third embodiment of the method for testing the receiving performance of the wireless terminal, referring to fig. 8, the system further includes an environment confirmation module 60, where the environment confirmation module 60 includes:
the second judging module 61 is configured to judge whether a sight distance of an open space is within a preset range, and whether multiple rooms are in the open space; the visual range of the selected space usually needs to meet 15 meters, and the measurement can be carried out through a distance measuring sensor, and the judgment is carried out by combining a judgment program in software; more than three rooms are needed in the open space, and the method can be specifically completed through a camera and a judgment program; if the conditions are met, the following steps are carried out, which is similar to the real environment, so that the test accuracy is higher;
the checking module 62 is configured to check a use condition of a frequency spectrum occupied by a WiFi signal of a set frequency band when a line of sight of the open space is within a preset range and a plurality of rooms are in the open space; if the two conditions are met, further calling the frequency spectrum occupied by the WiFi signal of the set frequency band, and checking the use condition;
the second determining module 63 is configured to determine that the open space is an open environment when the transmitting signals are not received or the number of the received transmitting signals is lower than a preset number. First, the wireless signal attenuation is greater in an open environment relative to a closed environment; secondly, in an open environment, for a WiFi STA receiving end product, a received wireless signal is more easily interfered; for example, when there is a room in an open space, the wireless signal needs to pass through an obstacle during propagation, and the attenuation is more severe than that when there is no room; therefore, a preset number or a preset number range is set, and when the number of the received signals is lower than the preset number range, the open space is determined to be an open environment.
Corresponding to the third embodiment of the method for testing the receiving performance of the wireless terminal, in the first determining module 50, the predetermined qualified quantitative value is 70% of the measured data of the qualified product at the current testing position.
Because the potential interference of the whole software and hardware of the actual measurement WiFi STA equipment is considered, the throughput data, namely the loss of 30% of the measurement data can be used as a qualified quantitative value of standard data, when all the WiFi STA equipment to be measured is subjected to performance measurement in the model, the loss cannot be lower than the qualified quantitative value, otherwise, the result is recorded as unqualified, and the WiFi needs to be further subjected to software and hardware rectification. The qualified quantitative standard value is simply the throughput TP (throughput), see Table 2.
The test can be carried out in the above way, a WiFi Router and a Wireless Card with better performance and market approval are selected, and the transceiving end is fully ensured not to have any problem related to the transceiving performance and the connection stability of WiFi. The most effective guarantee is made for the data model and the confirmation of the standard signal test point position, and then 70% of the measurement data corresponding to the test position is taken as a qualified quantitative value.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A method for testing the receiving performance of a wireless terminal, the method comprising the steps of:
judging whether the sight distance of an open space is within a preset range or not and whether a plurality of rooms are arranged in the open space or not;
if yes, checking the use condition of the frequency spectrum occupied by the WiFi signal of the set frequency band;
when the transmitting signals are not received or the number of the received transmitting signals is lower than the preset number, determining that the open space is an open environment;
placing a wireless terminal to be positioned at a preset position of a preset open environment;
selecting a candidate test position of the open environment according to three attenuation factors in a signal attenuation model;
a wireless throughput testing architecture is built between a wireless terminal and a wireless routing end or between the wireless terminal and a wireless access node so as to measure the maximum receiving data rate of the wireless terminal under the transmitting end at the candidate testing position;
determining a strong signal test position, a medium signal test position and a weak signal test position according to the measured maximum receiving data rate of the wireless terminal at the transmitting end of the candidate test position;
respectively placing a wireless routing end or a wireless access node for forwarding a wireless signal at a strong signal test position, a medium signal test position and a weak signal test position in the open environment;
when a wireless terminal receives a signal forwarded by a wireless routing end or a wireless access node, measuring the maximum receiving data rate of the wireless terminal when the wireless routing end is positioned at the current test position;
when the wireless router or the wireless access node is located at the strong signal testing position, the medium signal testing position and the weak signal testing position, the maximum receiving data rate of the wireless terminal is larger than a preset qualified quantitative value corresponding to the testing position, and the wireless terminal is judged to be qualified; otherwise, judging that the wireless terminal is unqualified.
2. The method for testing the reception performance of a wireless terminal according to claim 1, wherein the open environment satisfies straight-line distance attenuation, obstacle attenuation, and multipath effects of wireless signals.
3. The method of claim 1, wherein the predetermined qualified quantitative value is 70% of the measured data of qualified products at the current testing position.
4. A system for testing reception performance of a wireless terminal, the system comprising:
the environment confirmation module comprises a second judgment module, a viewing module and a second determination module;
the second judging module is used for judging whether the sight distance of an open space is within a preset range or not and whether a plurality of rooms are arranged in the open space or not;
the checking module is used for checking the use condition of the frequency spectrum occupied by the WiFi signal of the set frequency band when the sight distance of the open space is within a preset range and a plurality of rooms are arranged in the open space;
the second determining module is used for determining the open space to be an open environment when the transmitting signals are not received or the number of the received transmitting signals is lower than a preset number;
a location determination module, the location determination module comprising:
the system comprises a selection module, a test module and a control module, wherein the selection module is used for selecting a candidate test position of the open environment according to three attenuation factors in a signal attenuation model after a wireless terminal to be arranged at a preset position of the preset open environment;
the wireless throughput testing module is set up between the wireless routing end and the wireless terminal or between the wireless access node and the wireless terminal; the wireless terminal testing device is used for measuring the maximum receiving data rate of the wireless terminal when the wireless router or the wireless access node is placed at the candidate testing position;
the first determining module is used for determining a strong signal testing position, a medium signal testing position and a weak signal testing position according to the measured maximum receiving data rate of the wireless terminal at the transmitting end of the candidate testing position;
the wireless terminal comprises a position testing module, a position judging module and a position judging module, wherein the position testing module is used for measuring the maximum receiving data rate of the wireless terminal under a transmitting end at the current testing position when the wireless terminal receives a signal forwarded by a wireless routing end or a wireless access node; the current test position is a strong signal test position, a medium signal test position and a weak signal test position of the wireless router or the wireless access node in the open environment;
the first judgment module is used for judging that the wireless terminal is qualified when the maximum receiving data rates of the wireless terminal are all larger than the preset qualified quantitative value corresponding to the testing position when the wireless router or the wireless access node is positioned at the strong signal testing position, the medium signal testing position and the weak signal testing position; otherwise, judging that the wireless terminal is unqualified.
5. The system for testing the receiving performance of the wireless terminal according to claim 4, wherein in the position determining module, the open environment can satisfy the linear distance attenuation, the obstacle attenuation and the multipath effect of the wireless signals.
6. The system according to claim 4, wherein the predetermined qualified amount in the first determining module is 70% of the measured data of the qualified product at the current testing position.
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| CN108418726A (en) * | 2018-01-19 | 2018-08-17 | 广东小天才科技有限公司 | Throughput testing approach, device, equipment and the storage medium of consumer wireless device |
| CN108495123A (en) * | 2018-03-16 | 2018-09-04 | 上海康斐信息技术有限公司 | A kind of compatibility test method and system of router and TV box |
| CN109257124B (en) * | 2018-09-26 | 2022-04-15 | 深圳市广和通无线股份有限公司 | WiFi non-signaling test method, system, computer equipment and storage medium |
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| CN110366201A (en) * | 2019-08-20 | 2019-10-22 | 深圳市凯木金科技有限公司 | The test method and test macro of WIFI chip transmission rate |
| CN111510932A (en) * | 2020-03-21 | 2020-08-07 | 杭州迪普科技股份有限公司 | Wireless access point deployment method and device, electronic equipment and computer readable medium |
| CN112153713B (en) * | 2020-10-23 | 2021-08-20 | 珠海格力电器股份有限公司 | Obstacle determination method and apparatus, storage medium, and electronic apparatus |
| CN112276970B (en) * | 2020-10-27 | 2021-08-06 | 深圳市迈腾电子有限公司 | Output signal detection device and detection method of Wi-Fi router |
| CN112351448A (en) * | 2021-01-07 | 2021-02-09 | 北京普太科技有限公司 | WIFI function test method and system and electronic equipment |
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