WO2019161550A1

WO2019161550A1 - Terminal lte and wi-fi coexistence testing method and system

Info

Publication number: WO2019161550A1
Application number: PCT/CN2018/077077
Authority: WO
Inventors: 盛宁
Original assignee: 福建联迪商用设备有限公司
Priority date: 2018-02-24
Filing date: 2018-02-24
Publication date: 2019-08-29
Also published as: CN108513721A

Abstract

The present invention provides a terminal LTE and Wi-Fi coexistence testing method and system. The method comprises: adding a Wi-Fi signaling tester into an OTA antenna dark room testing system, and establishing a Wi-Fi signaling connection with a tested terminal in a dark room; according to preset first test parameter templates containing transmission powers and channels, corresponding to different channel interference scenarios, controlling, by means of the Wi-Fi signaling tester, a Wi-Fi antenna of the tested terminal to operate at a specified transmission power and a specified channel, and acquiring the total omnidirectional sensitivity of LTE of the tested terminal in a large Wi-Fi power transmission; likewise, by adding an LTE signaling tester into the OTA antenna dark room testing system, acquiring the total omnidirectional sensitivity of Wi-Fi of the tested terminal in a large LTE power transmission. The present invention simulates interference frequency point characteristics between LTE and Wi-Fi, and covers various frequency bands and channels, so that the obtained test result is of better significance as a reference.

Description

Terminal LTE and Wi-:Fi coexistence test method and system

[0001] The present invention relates to the field of communications technologies, and in particular, to a terminal LTE and Wi-Fi coexistence testing method and system.

Background technique

[0002] In order to better enjoy the convenience brought by technological development, advanced intelligent terminals (such as POS terminals) are becoming more and more popular, and basically have LTE (Long Term Evolution) and Wi-Fi ( Wireless Fidelity, two types of communication systems, due to the physical layer characteristics, some frequency bands interfere with each other when used, which also brings design challenges and challenges that coexist between the two. For example, when a POS terminal device implements transaction data communication through a 4G network and simultaneously implements signal coverage for other wireless devices through Wi-Fi, if the mutual influence of the inevitable coexistence mechanism of LTE and Wi-Fi cannot be accurately evaluated, The device may not be available to certain carriers, or the user experience may be poor.

[0003] Existing LTE and Wi-Fi inter-coexistence test methods are generally based on subjective judgments, testing through actual networks, but due to the uncontrollability of base station frequencies, it is impossible to simulate all scenarios, especially extreme LTE and W When the i-Fi frequency is close, it is not comprehensive, and even the opposite test conclusion can be drawn.

[0004] Therefore, it is necessary to provide a test method capable of effectively avoiding the above disadvantages, and capable of accurately, effectively and objectively evaluating mutual interference caused by LTE and Wi-Fi coexistence in a smart terminal device, which is digitally quantifiable. The result is to feed back the impact of LTE and Wi-Fi coexistence.

Summary of invention

technical problem

[0005] The technical problem to be solved by the present invention is to provide a terminal LTE and Wi-Fi coexistence test method and system, which can accurately, effectively, objectively and comprehensively test the impact of LTE and Wi-Fi coexistence in a terminal.

Problem solution

Technical solution

[0006] In order to solve the above technical problem, the technical solution adopted by the present invention is:

[0007] A terminal LTE and Wi-Fi coexistence testing method, which is characterized by: [0008] adding a Wi-Fi signaling tester in the OTA antenna darkroom test system, the Wi-Fi signaling tester establishing a Wi-Fi signaling connection with the tested terminal in the darkroom;

[0009] controlling the Wi-Fi antenna of the tested terminal to operate in a maximum power transmission mode by using a Wi-Fi signaling tester

[0010] controlling the Wi-Fi antenna of the tested terminal to operate at a specified transmit power by using a Wi-Fi signaling tester according to a preset first test parameter template including a transmit power and a channel corresponding to different channel interference scenarios And the specified channel, the total omnidirectional sensitivity of the LT E of the tested terminal under Wi-Fi high power transmission is obtained by the OT A antenna darkroom test system;

[0011] an LTE signaling tester is added to the OTA antenna darkroom test system, and the LTE signaling tester establishes an LTE signaling connection with the tested terminal in the darkroom;

[0012] controlling, by the LTE signaling tester, the LTE antenna of the tested terminal to operate in a maximum power transmission mode;

[0013] controlling the LTE antenna of the tested terminal to operate at a specified transmit power and a designated channel by using an LTE signaling tester according to a preset second test parameter template including a transmit power and a channel corresponding to different channel interference scenarios. The total omnidirectional sensitivity of the Wi-Fi of the tested terminal under LTE high power transmission is obtained through the OT A antenna darkroom test system.

[0014] The second technical solution provided by the present invention is:

[0015] A test system for LTE performance under Wi-Fi high-power transmission of a terminal, adding a Wi-Fi signaling tester in an OTA antenna darkroom test system; and an RF line and a dark room in the Wi-Fi signaling tester a test Wi-Fi antenna connection located near the Wi-Fi antenna of the terminal to be tested, establishing a Wi-Fi signaling connection between the Wi-Fi signaling tester and the tested terminal;

[0016] the Wi-Fi signaling tester is configured to control a Wi-Fi antenna of the tested terminal to operate in a maximum power transmission mode, and include a transmit power and a channel according to a preset corresponding different channel interference scenario. a first test parameter template, where the Wi-Fi antenna of the tested terminal is controlled to operate at a specified transmit power and a designated channel;

[0017] The OTA antenna darkroom test system is configured to obtain the total omnidirectional sensitivity of the LTE under test in the Wi-Fi high power transmission.

[0018] The third technical solution provided by the present invention is:

[0019] A test system for Wi-Fi performance of a terminal LTE high-power transmission, in an OTA antenna darkroom test system Adding an LTE signaling tester; the RF line of the LTE signaling tester is connected to a test LTE antenna located in the dark room near the LTE antenna of the tested terminal, and the LTE signaling of the LTE signaling tester and the tested terminal is established. Make a connection;

[0020] the LTE signaling tester is configured to control an LTE antenna of the tested terminal to work in a maximum power transmission mode, and a second test parameter that includes a transmit power and a channel according to a preset corresponding different channel interference scenario. a template, the LTE antenna that controls the terminal under test operates at a specified transmit power and a designated channel

[0021] The OTA antenna darkroom test system is configured to obtain the total omnidirectional sensitivity of the Wi-Fi of the tested terminal under LTE high power transmission.

Advantageous effects of the invention

Beneficial effect

[0022] The beneficial effects of the present invention are: The present invention simulates a wireless hotspot in a real network through a Wi-Fi signaling tester

(AP) Simulate the operator communication base station in the real network through the LTE signaling tester; and flexibly set the desired test parameters through the Wi-Fi signaling tester and the LTE signaling tester, and can simulate LTE and WI -F I Real-world scenario with possible channel interference in the case of coexistence, and supports repeated testing, and the test state is stable. By simulating the actual coexistence scenario, the present invention can obtain accurate quantifiable indicators, and objectively and comprehensively evaluate the influence of Wi-Fi and LTE coexistence, thereby obtaining the performance of the coexistence of the tested terminal; further, the OTA darkroom test is shielded. The interference of the external electromagnetic environment, the value of the test can reflect the actual situation.

Brief description of the drawing

DRAWINGS

1 is a schematic diagram of a WI-FI spectrum;

2 is a schematic structural diagram and a connection diagram of an omnidirectional sensitivity test scheme for Wi-Fi transmission interference LTE according to the present invention;

3 is a schematic flow chart of an omnidirectional sensitivity test scheme for Wi-Fi transmission interference LTE according to the present invention;

4 is a schematic structural diagram and a connection diagram of an omnidirectional sensitivity test scheme for LTE transmission interference Wi-Fi according to the present invention;

5 is a schematic flow chart of an omnidirectional sensitivity test scheme for LTE transmission interference Wi-Fi according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0029] The most critical idea of the present invention is: The present invention simulates a wireless hotspot (AP) in a real network through a Wi-Fi signaling tester, and simulates a carrier communication base station in a real network through an LTE signaling tester; Set the desired test parameters, simulate the real-world scenario of all possible channel interference in the case of LTE and Wi-Fi coexistence, and then obtain accurate and comprehensive Wi-Fi and LTE coexistence test results through OTA darkroom test.

[0030] The technical terms involved in the present invention are explained:

[Table 1] [Table 1]

[0032] For a better understanding of the present application, the related technical background will be described below.

[0033] First, Wi-Fi spectrum [0034] As shown in FIG. 1, Wi-Fi has a total of 14 channels (14 is only used in Japan). among them:

[0035] 1) The 802.11b/g/n standard operates in the 2.4G frequency band, and the frequency range is 2.400-2.4835 GHz, which is 83.5 M wide;

[0036] 2) divided into 14 subchannels, each subchannel having a width of 22 MHz, and a center frequency interval of adjacent channels 5

MHz;

[0037] 3) adjacent channels have frequency overlap (eg, 1 channel and 2, 3, 4, 5 channels have frequency overlap);

[0038] 4) Only three (1, 6, 11) channels do not interfere with each other in the entire frequency band.

[0039] Second, LTE and Wi-Fi coexist

[0040] 1. Some frequency bands similar to LTE and Wi-Fi

[0041] Wi-Fi operates in the 2.4-2.4835 GHz band and is very close to the LTE BAND 40: 2.3-2.4 GHz high channel on the low channel (1st channel: 2.412 GHz); on the high channel (13th channel: 2.472 GHz) ) Very close to BAND41: 2.496-2.690GHZ low channel.

[0042] 2. Main typical scenarios of LTE and Wi-Fi coexistence interference

[0043] 1) LTE BAND 40 transmits interference Wi-Fi reception;

[0044] 2) WI-FI transmission interference LTE BAND 40 reception;

[0045] 3) LTE BAND 7 transmitting interference Wi-Fi reception;

[0046] 4) LTE BAND 38/41 transmitting interference Wi-Fi reception, because the protection band is large, the interference is easy to control;

[0047] 5) WI-FI transmission interference LTE BAND 38/41 reception, because the protection frequency band is large, the interference is easy to control;

[0048] 6) Other possible interference.

[0049] 3. Principle of mutual interference between LTE and Wi-Fi

[0050] 1) the sensitivity of one of the spurs falling within the receiving band of the other party is deteriorated;

[0051] 2) an out-of-band blocking caused by one of the useful signals falling within the receiving band of the other party;

[0052] 3) The sensitivity of the intermodulation product of the wideband signal falling within the receiving band of the other party is deteriorated.

[0053] Referring to FIG. 2 to FIG. 5, the present invention provides a terminal LTE and Wi-Fi coexistence testing method, including:

[0054] adding a Wi-Fi signaling tester to the OTA antenna darkroom test system, the Wi-Fi signaling tester establishing a Wi-Fi signaling connection with the tested terminal in the darkroom;

[0055] controlling the Wi-Fi antenna of the tested terminal to operate in a maximum power transmission mode by using a Wi-Fi signaling tester [0056] controlling the Wi-Fi antenna of the tested terminal to operate at a specified transmit power by using a Wi-Fi signaling tester according to a preset first test parameter template including a transmit power and a channel corresponding to different channel interference scenarios And the specified channel, the total omnidirectional sensitivity of the LT E of the tested terminal under Wi-Fi high power transmission is obtained by the OT A antenna darkroom test system;

[0057] an LTE signaling tester is added to the OTA antenna darkroom test system, and the LTE signaling tester establishes an LTE signaling connection with the tested terminal in the darkroom;

[0058] controlling, by the LTE signaling tester, the LTE antenna of the tested terminal to operate in a maximum power transmission mode;

[0059] controlling the LTE antenna of the tested terminal to operate at a specified transmit power and a designated channel by using an LTE signaling tester according to a preset second test parameter template including a transmit power and a channel corresponding to different channel interference scenarios. The total omnidirectional sensitivity of the Wi-Fi of the tested terminal under LTE high power transmission is obtained through the OT A antenna darkroom test system.

[0060] It can be seen from the above description that the beneficial effects of the present invention are: that any desired test parameters can be set through the meter, simulating all the real network scenarios, and the use scenarios of foreign operators can provide accurate and quantifiable indicators. It plays a very important role in the performance evaluation of terminal related aspects.

[0061] Further, the method further includes:

[0062] testing to obtain the LTE total omnidirectional sensitivity of the tested terminal in the Wi-Fi off state;

[0063] The test obtains the total omnidirectional sensitivity of the Wi-Fi of the tested terminal in the LTE off state.

[0064] From the above description, it is known that the total omnidirectional sensitivity of the antennas of LTE and Wi-Fi without LTE and Wi-Fi coexistence is simultaneously tested, and the comprehensiveness of the test results is achieved.

[0065] Further, the Wi-Fi signaling is established by connecting the radio frequency line of the Wi-Fi signaling tester with a test Wi-Fi antenna located in the dark room near the Wi-Fi antenna of the terminal under test. The tester is connected to the Wi-Fi signaling of the terminal under test;

[0066] connecting the radio frequency line of the LTE signaling tester with the test LTE antenna located in the dark room near the LTE antenna of the tested terminal, to establish an LTE signaling connection between the LTE signaling tester and the tested terminal .

[0067] As can be seen from the above description, by connecting the RF line to the test Wi-Fi antenna or testing the LTE antenna, the terminal and the letter are realized when the Wi-Fi antenna inside the terminal to be tested is connected with the test Wi-Fi antenna through coupling. Connect the tester's Wi-Fi or LTE wireless communication.

[0068] Further, the OTA antenna darkroom test system includes an OTA darkroom, a path switcher, and a sensitivity test. a tester, a spectrum analyzer, and a host computer; the OTA darkroom includes a test Wi-Fi antenna and a test LTE antenna;

[0069] the path switcher is connected to the connection antenna of the OTA dark room through the radio frequency line, and the sensitivity tester and the spectrum analyzer;

[0070] The host computer is respectively connected to the path switcher, the sensitivity tester, and the spectrum analyzer.

[0071] As can be seen from the above description, since the dark room is shielded from the electromagnetic environment, the external interference is negligible.

, can use the OTA antenna darkroom test system to obtain accurate test results.

[0072] Further, the Wi-Fi signaling tester is CMW270; the LTE signaling tester is CMW500

[0073] Further, the transmit power in the first test parameter template includes 11 dBm and 19 dBm, and the channel includes a first channel, a third signal, and a fifth channel;

[0074] The transmit power in the second test parameter template includes 15 dBm and 22

dBm, the channel includes Band40 39550 channel, Band7 20775 channel and Band41 40465 channel

[0075] As can be seen from the above description, the transmission power and channel parameters corresponding to the scene most likely to be interfered are directly tested, thereby improving the testing efficiency.

[0076] The second technical solution provided by the present invention is:

[0077] A test system for LTE performance under Wi-Fi high-power transmission of a terminal, adding a Wi-Fi signaling tester in an OTA antenna darkroom test system; and an RF line and a dark room in the Wi-Fi signaling tester a test Wi-Fi antenna connection located near the Wi-Fi antenna of the terminal to be tested, establishing a Wi-Fi signaling connection between the Wi-Fi signaling tester and the tested terminal;

[0078] the Wi-Fi signaling tester is configured to control a Wi-Fi antenna of the tested terminal to operate in a maximum power transmission mode, and include a transmit power and a channel according to a preset corresponding different channel interference scenario. a first test parameter template, where the Wi-Fi antenna of the tested terminal is controlled to operate at a specified transmit power and a designated channel;

[0079] The OTA antenna darkroom test system is configured to obtain the total omnidirectional sensitivity of the LTE under test in the Wi-Fi high power transmission.

[0080] As can be seen from the above description, the beneficial effects of the present invention are: Simulating antenna heat through a Wi-Fi signaling tester Point, to achieve the total omnidirectional sensitivity of the tested terminal in the simulated real network scenario under the Wi-Fi high power transmission, can accurately obtain the relevant coexistence impact assessment data, in order to optimize the hardware and software, structural design, and avoid unreasonable points.

[0081] Further, the OTA antenna darkroom test system includes an OTA darkroom, a path switcher, a sensitivity tester, a spectrum analyzer, and a host computer; and the OTA darkroom includes a test Wi-Fi antenna and a test LTE antenna;

[0082] the path switcher is connected to the connection antenna of the OTA dark room through the radio frequency line, and the sensitivity tester and the spectrum analyzer;

[0083] The upper computer is respectively connected to the path switcher, the sensitivity tester, and the spectrum analyzer.

[0084] As can be seen from the above description, the total omnidirectional sensitivity of the L TE of the terminal under the Wi-Fi high power transmission is matched with the OTA antenna darkroom test system, and the accuracy of the test result can be ensured.

[0085] Further, the OTA darkroom includes a 3D turntable, two connecting antennas, and a horn antenna; the two connecting antennas and the horn antenna are respectively connected to the path switcher.

[0086] Further, the Wi-Fi signaling tester is a CMW270 Wi-Fi signaling tester.

[0087] Further, the transmit power in the first test parameter template includes 11 dBm and 19 dBm, and the channel includes a first channel, a third signal, and a fifth channel.

[0088] The third technical solution provided by the present invention is:

[0089] A test system for Wi-Fi performance of a terminal LTE high-power transmission, adding an LTE signaling tester in an OTA antenna darkroom test system; the radio frequency line and the dark room of the LTE signaling tester are located at the terminal under test Testing the LTE antenna connection in the vicinity of the LTE antenna, establishing an LTE signaling connection between the LTE signaling tester and the tested terminal;

[0090] the LTE signaling tester is configured to control an LTE antenna of the tested terminal to work in a maximum power transmission mode, and a second test parameter that includes a transmit power and a channel according to a preset corresponding different channel interference scenario. a template, the LTE antenna that controls the terminal under test operates at a specified transmit power and a designated channel

[0091] The OTA antenna darkroom test system is configured to obtain the total omnidirectional sensitivity of the Wi-Fi of the tested terminal under LTE high power transmission.

[0092] It can be seen from the above description that the antenna hotspot is simulated by the LTE signaling tester, and the simulated real network scene is implemented. By measuring the total omnidirectional sensitivity of Wi-Fi in LTE high-power transmission, the relevant coexistence impact assessment data can be accurately obtained to optimize hardware and software, structural design, and avoid unreasonable points.

[0093] Further, the OTA antenna darkroom test system includes an OTA darkroom, a path switcher, a sensitivity tester, a spectrum analyzer, and a host computer; and the OTA darkroom includes a test Wi-Fi antenna and a test LTE antenna;

[0094] the path switcher is connected to the connection antenna of the OTA dark room through the radio frequency line, and the sensitivity tester and the spectrum analyzer;

[0095] The host computer is respectively connected to the path switcher, the sensitivity tester, and the spectrum analyzer.

[0096] It can be seen from the above description that the total omnidirectional sensitivity of the L TE under the Wi-Fi high power transmission is matched with the OTA antenna darkroom test system, and the accuracy of the test result can be ensured.

[0097] Further, the OTA darkroom includes a 3D turntable, two connecting antennas, and a horn antenna; the two connecting antennas and the horn antenna are respectively connected to the path switcher.

[0098] Further, the Wi-Fi signaling tester is a CMW500 LTE signaling tester.

[0099] Further, the transmit power in the second test parameter template includes 15 dBm and 22 dBm, and the channel includes a Band40 39550 channel, a Band7 20775 channel, and a Band41 40465 channel.

Embodiment 1

[0101] This embodiment provides a terminal LTE and Wi-Fi coexistence test method. The terminal may be any intelligent terminal that has both LTE and Wi-Fi communication means, such as a smart POS terminal, a smart phone, a tablet, and the like. This embodiment will be described by taking the terminal as an intelligent POS terminal as an example.

[0102] The testing method of this embodiment includes:

[0103] First, the OTA antenna darkroom test system is used to test the total omnidirectional sensitivity of the LTE terminal under the Wi-Fi high power transmission. That is, Wi-Fi transmission interferes with LTE's omnidirectional sensitivity test scheme.

[0104] 1.1, scene description

[0105] For many occasions that are not sensitive to battery life (such as always having an adapter, a large-capacity battery, etc.), the OS terminal often establishes an application scenario for converting an LTE data connection into a Wi-F flood mode (ie, open Hotspots), which can effectively use existing devices to achieve more network connections. This practical application case is a typical LTE and Wi-Fi coexistence scenario: The Wi-Fi hotspot function of the intelligent POS terminal shares the LTE data connection, and the intelligent POS terminal itself performs the LTE communication with the carrier communication base station. At the same time, the base station data connection service is converted into a Wi-Fi hotspot for sharing, so that other devices can connect to the network.

[0106] For such LTE and Wi-Fi coexistence mode (Wi-Fi hotspot sharing LTE data connection mode), this embodiment uses a Wi-Fi signaling tester, through a dedicated Wi-Fi antenna and a measured intelligence association The gPOS terminal establishes a Wi-F i signaling connection to simulate and provide a Wi-Fi connection function. Here, the Wi-Fi signaling tester functions as a wireless router (wireless hotspot), and can also establish a WI-FI through a Wi-Fi signaling tester.

802.11bgn arbitrary mode, can control the Wi-Fi connection channel arbitrarily, can always make the Wi-Fi of the intelligent POS terminal work in the maximum power transmission mode, and realize simulation of various real network scenarios. Preferably, the Wi-Fi signaling tester uses a CMW270 Wi-Fi signaling tester (a comprehensive tester manufactured by Rohde Schwarz, Germany), which will be described in detail below.

[0107] In the test of this embodiment, an OTA antenna darkroom test system is also required. The OTA antenna darkroom test system is a dedicated test system for testing the performance of the terminal's LTE and Wi-Fi antennas, and can accurately evaluate the antenna performance of the terminal-related complete machine. In the prior art, such darkrooms are used to test the total omnidirectional sensitivity of LTE antennas without the coexistence of LTE and Wi-Fi. Here, the test principle of the OTA darkroom is not described here. The OT A antenna darkroom test system can use ETS, SATIMO and other brands.

[0108] 1.2, the testing process

[0109] As shown in FIG. 3, first, the smart POS terminal to be tested is placed in a dedicated OTA antenna darkroom test system.

[0110] Specifically, as shown in FIG. 2, the OTA antenna darkroom test system includes an OTA darkroom, a path switcher, a sensitivity tester, a spectrum analyzer, and a host computer.

[0111] wherein the OTA darkroom includes a test Wi-Fi antenna and a test LTE antenna, and the darkroom further includes a 3D turntable, two connected antennas, and a horn antenna; wherein the 3D turntable is used for fixed measurement The smart gateway gPOS terminal, the test Wi-Fi antenna and the test LTE antenna will be placed in the vicinity of the Wi-Fi antenna built in the smart POS terminal under test and the test LTE antenna during the test of the corresponding project, so as to test Wi -Fi antenna and the built-in Wi-Fi antenna of the smart POS terminal to be tested, and test the LTE antenna and the LTE antenna built in the smart POS terminal to be tested to establish a corresponding communication connection manner by coupling; the two connected antennas and one horn antenna, It is used in the 0TA darkroom test system to test the omnidirectional sensitivity of the intelligent P0S terminal. The main function of the connected antenna is to connect the sensitivity tester. The main function of the horn antenna is to calculate the water. The flat and vertical polarization values result in omnidirectional sensitivity.

[0112] wherein the path switcher establishes a connection based on a radio frequency signal (solid line in FIG. 2) through a connection antenna of the radio frequency line and the OTA dark room, and the sensitivity tester and the spectrum analyzer; The path switcher, the sensitivity tester, the spectrum analyzer, and the 3D turntable are respectively connected based on a control signal (a dotted line formed by a dot interval in FIG. 2, simply referred to as a broken line a), and the upper computer can be selected as a computer. The path switcher is used for switching the antenna polarization direction path of the OTA darkroom test system; the sensitivity tester is used to calculate the final omnidirectional sensitivity by the host computer test software; the spectrum analyzer is used for testing the omnidirectional emission of the whole machine Power (dark room supporting equipment, not the focus of attention in this case).

[0113] In the second step, a Wi-Fi signaling tester is added to the OTA antenna darkroom test system, and the Wi-Fi signaling tester establishes a Wi-Fi signaling connection with the tested terminal in the darkroom.

[0114] As shown in FIG. 2, the system composition and connection diagram of the test solution are shown. Specifically, the CMW270 Wi-Fi Signaling Tester is connected to the test Wi-Fi antenna near the darkroom turntable via RF lines (the dotted line is formed by the short line interval in Figure 2, referred to as the dotted line b); the Wi-Fi antenna is tested and tested. The built-in Wi-Fi antenna of the smart POS terminal establishes a Wi-Fi signaling connection between the smart POS terminal under test and the CMW270 Wi-Fi signaling tester by means of coupling. In Figure 2, the solid path and the dotted line a path are OTA darkroom self-contained systems. The CMW27 0 Wi-Fi Signaling Tester acts as a wireless router (wireless hotspot) here, and another great advantage of such a connection is that Wi-Fi 802.1 can be established through the CMW270 Wi-Fi Signaling Tester setup. Lbgn Any mode, you can control the Wi-Fi connection channel arbitrarily, and you can always make the Wi-Fi of the smart POS terminal work in the maximum power transmission mode.

[0115] The third step, on the basis of the above, controls the Wi-Fi antenna of the intelligent POS terminal under test to operate in the maximum power transmission mode by using the CMW270 Wi-Fi signaling tester, and uses the OTA antenna darkroom test system, The gPOS terminal performs a total omnidirectional sensitivity test before and after Wi-Fi is turned on. By comparing the deterioration of the total omnidirectional sensitivity of the LTE whole machine before and after the Wi-Fi is turned on, the relevant coexistence impact evaluation data can be accurately obtained, so as to optimize the hardware and software, structural design, and avoid unreasonable points.

[0116] Due to the miniaturization of the structure design of the intelligent POS terminal itself, the distance between the Wi-Fi antenna and the LTE antenna is sometimes very close, and the LTE reception performance is normal when Wi-Fi is not working; Once Wi-Fi is in operation, especially in the high-power transmission state, the high transmit power of Wi-Fi will enter the receiving band of LTE, which affects the receiving performance of LTE. Therefore, control Wi-Fi antennas are tested in the maximum power transmission mode to obtain test results that maximize the impact. The test results are more accurate and representative.

[0117] In the fourth step, according to the preset first test parameter template including the transmit power and the channel corresponding to different channel interference scenarios, the Wi-Fi antenna of the tested terminal is controlled by the Wi-Fi signaling tester. The specified transmit power and the specified target channel are used to obtain the total omnidirectional sensitivity of the LTE under test in the Wi-Fi high power transmission through the OT A antenna darkroom test system.

[0118] Since the factors affecting LTE by Wi-Fi are mainly channel frequency and power, the first test parameter template, ie, Wi-Fi, may interfere with the integration of frequency bands, frequency points, and power of LTE. For example, the first test parameter template includes at least transmit power and channel parameters, wherein the transmit power includes at least 11 dBm and 19 dBm, and the channel includes at least a first channel, a third signal, and a fifth channel. Then, during the test, the corresponding test channel template can be used to set the corresponding channel and power through the CMW270 Wi-Fi signaling tester (normally, the power of 802. l ib is the largest), and the measured condition can be observed in real time. The Wi-Fi connection status of the terminal implements a scenario simulating all possible channel interferences to match the darkroom system test results.

[0119] For example, the Wi-Fi state of the coupled connection is set by the CMW270 Wi-Fi Signaling Tester to operate on: Channel: 2432 MHz of the 5th channel; Power: 19 dBm, then LT E total omnidirectional through the OTA Antenna Darkroom Test System Sensitivity test, obtain the current LTE total omnidirectional sensitivity of the tested terminal: BAND40: -90. 65; -91.37. The LTE total omnidirectional sensitivity corresponding to the tested terminal is obtained by adjusting the signal and power of the Wi-Fi, until the parameters in the first test parameter template are traversed, and then the test data table is summarized and obtained.

[0120] As shown in Table 1 and Table 2 below, Table 1 is the total omnidirectional sensitivity test result before and after Wi-Fi turn-on, and Table 2 is the test data table affecting LTE after Wi-Fi turn-on. As can be seen from Table 2: LTE BAND40 has only a high 39350 channel: 2370MHz frequency is susceptible to Wi-Fi, and there is basically no impact below 2370MHz. The factors affecting LTE by Wi-Fi are mainly the channel frequency and power. The WI-FI transmit power lower than l ldBm, regardless of which channel is used, the impact on LTE is negligible. l The transmit power above ldBm is at the first Channel usage, will make LTE BAND40

39350 channel: 2370MHz at least 2dB (99.89-88.47) worse overall omnidirectional sensitivity. The reason is that the Wi-Fi channel 1 frequency is 2412MHz, away from LTE BAND40.

39350 channel: 2370MHz with only 42MHz spacing, at 19dBm transmit power, Wi-Fi and L The isolation between TE antennas is not sufficient to offset the interference caused by Wi-Fi power falling within the LTE receive band. The same usage scenario Wi-Fi 13 channel high frequency point 2472MHz due to LTE

BAND41 low frequency point 40340 channel: 2565MHz (the case only evaluates Chinese mainland operators) There is a 93MHz band interval, and the test value gap is within ldB, which is basically negligible.

[0121] The test of the solution can be repeated and the state is stable. Since the dark room is shielded from the electromagnetic environment, the external interference can be neglected to ensure the accuracy of the test.

[0123] Table 1

[0125] Table 2

[0126] Second, the use of OTA antenna darkroom test system to test the intelligent POS terminal LTE high power transmission Wi-Fi total omnidirectional sensitivity. That is, LTE transmits an omnidirectional sensitivity test scheme that interferes with Wi-Fi.

[0127] 2.1 Scene Description

[0128] For another typical case of LTE and WI-FI coexistence, the smart POS terminal needs to perform high-power transmission according to the terminal power control principle to maintain the LTE connection under the coverage of the weak communication field strength of the carrier communication base station. In this case, Wi-Fi communication reliability is susceptible to LTE high power transmission. Since the intelligent POS terminal is in the coverage edge area of the carrier communication base station, the automatic power control triggers the terminal to ensure communication with the base station under the large transmission power state, and the Wi-Fi is also in the connection communication state, online video, real In the case of voice, etc., the reliability of the connection needs to be guaranteed.

[0129] For this type of LTE and Wi-Fi coexistence mode, the solution uses an LTE signaling tester to establish an LTE signaling connection through a dedicated L TE antenna and a smart POS terminal under test to simulate a terminal under the real network in the operator. The weak field signal strength of the communication base station and the case where LTE requires high power transmission. Here, the LTE signaling tester functions as a carrier communication base station, and can also establish a signaling connection of each frequency band and channel of the LTE through an LTE signaling tester, and can control the connection channel and the transmission power value arbitrarily. Simulation of various real-world scenarios. Preferably, the LTE signaling tester uses a CMW500 LTE signaling tester (a comprehensive tester manufactured by Rohde & Schwarz, Germany), which will be described in detail below.

[0130] The test of this embodiment also needs to use an OTA antenna darkroom test system, and the structure and connection relationship of the OTA antenna darkroom test system are as described above for the omnidirectional sensitivity test scheme of the Wi-Fi transmission interference LTE. No longer repeat.

[0131] 2.2, testing process

[0132] As shown in FIG. 4 and FIG. 5, first, the smart POS terminal under test is placed in a dedicated OT A antenna darkroom test system.

[0133] The second step is to add a CMW500 to the OTA antenna darkroom test system.

The LTE signaling tester, the CMW500 LTE signaling tester is connected to the LTE antenna near the terminal under test in the darkroom through the RF line, and the CMW500 LTE signaling is established by coupling the LTE antenna with the LTE antenna built in the smart POS terminal under test. The tester is connected to the LTE signaling of the terminal under test to simulate the connection between the ordinary terminal and the carrier communication base station. Another great advantage of this operation is that the signal connection of each frequency band and channel of LTE can be established through the instrument setting, and the connection channel and the transmission power value can be arbitrarily controlled.

[0134] The third step is to control the LTE antenna of the tested intelligent POS terminal to operate in the maximum power transmission mode by using the CMW500 LTE signaling tester, and perform the omni-directional sensitivity test of the intelligent POS terminal WI-FI using the OTA antenna darkroom test system to obtain The total omnidirectional sensitivity of the Wi-Fi device was deteriorated before and after the LTE was started. By comparing the deterioration of the total omnidirectional sensitivity of the Wi-Fi machine before and after the LTE is started, the relevant coexistence impact assessment data can be accurately obtained to optimize the hardware and software, structural design, and avoid unreasonable points.

[0135] Due to the miniaturization of the structure design of the terminal itself, the distance between the Wi-Fi antenna and the LTE antenna is sometimes very close. Wi-Fi reception is normal when LTE is not working; but once LTE is working State, especially the high-power transmission state. At this time, due to the proximity of the two antennas, the high transmission power of LTE will enter the receiving band of Wi-Fi, which in turn affects the receiving performance of Wi-Fi. Therefore, the LTE antenna is controlled to operate in the maximum power transmission mode to obtain a test result that maximizes the degree of influence, and the test result is more accurate and representative.

[0136] In the fourth step, the LTE antenna of the tested terminal is controlled to operate at a specified transmit power by using an LTE signaling tester according to a preset second test parameter template that includes a transmit power and a channel corresponding to different channel interference scenarios. And the specified 彳g channel, through the OT A antenna darkroom test system to obtain the total omnidirectional sensitivity of the tested terminal under Wi-Fi under LTE high power transmission.

[0137] Since the factors affecting LTE by Wi-Fi are mainly channel frequency and power, the second test parameter template, ie, Wi-Fi, may interfere with the integration of frequency bands, frequency points, and power of LTE. For example, the second test parameter template includes at least transmit power and channel parameters, wherein the transmit power includes at least 15 dBm and 22 dBm, and the channel includes at least a Band 40 39550 channel, a Band 7 20775 channel, and a Band 41 40465 channel. Then, during the test, the corresponding test channel template can be used to set the corresponding channel and power through the CMW500 LTE signaling tester, and the LTE connection state of the tested terminal can be observed in real time to simulate all possible channel interferences. Scene, to match the darkroom system test results.

[0138] For example, the LTE state of the coupled connection is set by the CMW500 LTE signaling tester to work on: Band40 39550 channel, 2390 MHz; maximum power: about 19 dBm, and then the Wi-Fi total omnidirectional sensitivity test is performed by the OTA antenna darkroom test system. Obtain the current Wi-Fi total omnidirectional sensitivity of the tested terminal: 2412MHz frequency of the first channel 2412: -65.35; 2417 of the second channel 2417

MHz frequency: -69.54; 2467 MHz frequency of the 12th channel: -68.15; 2472 MHz frequency of the 13th channel: -69.22. After adjusting the Wi-Fi signal and power, the total omnidirectional sensitivity of the Wi-Fi corresponding to the tested terminal is obtained until the parameters in the second test parameter template are traversed, and then the test data table is summarized and obtained.

[0139] As shown in Table 3 below, the test data table affecting Wi-Fi after being turned on for LTE. As can be seen from Table 3: L

TE

BAND40 is close to the high frequency point 39550 channel: 2390MHz for high power transmission (19dBm) will affect the WI-FI channel 1: 2412MHz total omnidirectional sensitivity of at least 3dB; 15dBm transmit power has a slight effect. And LTE BAND7 is close to the low-frequency point 20775 channel: 2502.5MHz vs. WI-FI channel 13: 2472MHz The 3dB cause is also due to the fact that the frequency separation between the LTE and Wi-Fi channels is not sufficient to offset the interference of the LTE transmit power in the Wi-Fi receive band.

Table 3

[0142] This embodiment is based on a dedicated OTA shielding darkroom, and has the ability to test the total omnidirectional sensitivity of LTE and Wi-Fi. By externally connecting a CMW270 or CMW500 tester, it functions as a wireless router or a carrier communication base station in the real network. effect. Different from the existing test methods, using the instrument to simulate, can effectively change the test parameters, very convenient to set various frequency bands and frequency points, transmit power, can easily monitor the state during the test, for various possibilities The simulation of the scene is very comprehensive.

[0143] The specific test in this embodiment is divided into mutual impact assessment between LTE and Wi-Fi, and the LTE is separately implemented by using the meter. High-power transmissions test the impact of Wi-Fi reception, and Wi-Fi high-power transmissions test the impact of LTE reception. By comparing the differences in coexistence scenarios without coexistence scenarios (single use of Wi-Fi or LTE alone), the performance of existing terminal machine coexistence is obtained.

[0144] Compared with the existing subjective test of the real network, the present embodiment can provide objective and accurate numerical values, and the LTE and WI-FI coexistence evaluation is more comprehensive. In addition, the actual network test is greatly changed due to environmental influences. OTA darkroom test, because it shields the external electromagnetic environment, the measured value can reflect the actual situation, provide data support for circuit principle and antenna design optimization, so as to avoid the coexistence risk and improve the quality of the product.

Embodiment 2

Referring to FIG. 2 and FIG. 4, this embodiment provides a test system for LTE performance under Wi-Fi high-power transmission of a terminal, including an OTA antenna darkroom test system, and the OTA antenna darkroom test system. The structural composition and the connection relationship have been described in the first embodiment, and are not repeated here.

[0147] The test system of this embodiment also includes a Wi-Fi signaling tester and an LTE signaling tester to implement complete testing of terminal LTE and Wi-Fi coexistence. Of course, it can also be equipped with a Wi-Fi signaling tester or an LTE signaling tester according to actual needs, corresponding to the Wi-Fi transmission interference LTE test, or the LTE transmission interference Wi-Fi test.

[0148] Hereinafter, a test system capable of implementing terminal LTE and Wi-Fi coexistence testing is described:

[0149] When the test system needs to perform Wi-Fi transmission interference LTE test:

[0150] As shown in FIG. 2, a Wi-Fi signaling tester is added to the OTA antenna darkroom test system; the RF line and the darkroom of the Wi-Fi signaling tester are located near the Wi-Fi antenna of the terminal to be tested. Testing the Wi-Fi antenna connection, establishing a Wi-Fi signaling connection between the Wi-Fi signaling tester and the terminal under test;

[0151] the Wi-Fi signaling tester is configured to control a Wi-Fi antenna of the tested terminal to operate in a maximum power transmission mode, and include a transmit power and a channel according to a preset corresponding different channel interference scenario. a first test parameter template, where the Wi-Fi antenna of the tested terminal is controlled to operate at a specified transmit power and a designated channel;

[0152] The OTA antenna darkroom test system is used to obtain the total omnidirectional sensitivity of the LTE under test in the Wi-Fi high power transmission.

[0153] When the test system needs to perform LTE transmission interference Wi-Fi test: [0154] As shown in FIG. 4, an LTE signaling tester is added to an OTA antenna darkroom test system; the RF line of the LTE signaling tester is connected to a test LTE antenna located in the darkroom near the LTE antenna of the tested terminal, Establishing an LTE signaling connection between the LTE signaling tester and the tested terminal;

[0155] The LTE signaling tester is configured to control an LTE antenna of the tested terminal to work in a maximum power transmission mode, and a second test parameter that includes a transmit power and a channel according to a preset corresponding different channel interference scenario. a template, the LTE antenna that controls the terminal under test operates at a specified transmit power and a designated channel

[0156] The OTA antenna darkroom test system is configured to obtain the total omnidirectional sensitivity of the Wi-Fi of the tested terminal under LTE high power transmission.

[0157] In summary, the present invention provides a terminal LTE and Wi-Fi coexistence test method and system, and utilizes an OT A antenna darkroom system to simulate interference frequency characteristics between LTE and Wi-Fi, and various frequency bands can be used. And the channel is covered, so that the test results obtained by the test are more relevant.

Claims

Claim

[Claim 1] A terminal LTE and Wi-Fi coexistence test method, comprising:

Adding a Wi-Fi signaling tester to the OTA antenna darkroom test system, the Wi-Fi signaling tester establishing a Wi-Fi signaling connection with the tested terminal in the darkroom;

Controlling the Wi-Fi antenna of the tested terminal to operate in a maximum power transmission mode by using a Wi-Fi signaling tester;

Controlling, by a Wi-Fi signaling tester, the Wi-Fi antenna of the tested terminal operates at a specified transmit power and a specified one according to a preset first test parameter template including a transmit power and a channel corresponding to different channel interference scenarios. Channel, obtain the total omnidirectional sensitivity of the tested terminal in LTE under Wi-Fi high power transmission through the OT A antenna darkroom test system; add an LTE signaling tester in the OTA antenna darkroom test system, the LTE signaling tester and The measured terminal in the darkroom establishes an LTE signaling connection;

Controlling, by the LTE signaling tester, the LTE antenna of the tested terminal operates in a maximum power transmission mode;

Controlling, by the LTE signaling tester, the LTE antenna of the tested terminal operates at a specified transmit power and a designated channel according to a preset second test parameter template including a transmit power and a channel corresponding to different channel interference scenarios, by using OTA The antenna darkroom test system obtains the total omnidirectional sensitivity of the Wi-Fi of the tested terminal under LTE high power transmission.

[Claim 2] The terminal LTE and Wi-Fi coexistence testing method according to claim 1, further comprising:

The test obtains the total omnidirectional sensitivity of the LTE under test in the Wi-Fi off state; the test obtains the total omnidirectional sensitivity of the Wi-Fi of the tested terminal in the LTE off state.

[Claim 3] The terminal LTE and Wi-Fi coexistence testing method according to claim 1, wherein: the radio frequency line of the Wi-Fi signaling tester and the Wi- in the dark room are located in the terminal under test. Testing a Wi-Fi antenna connection near the Fi antenna to establish a Wi-Fi signaling connection between the Wi-Fi signaling tester and the terminal under test;

Establishing the LTE signaling tester and the terminal to be tested by connecting the radio frequency line of the LTE signaling tester with the test LTE antenna located in the dark room near the LTE antenna of the terminal under test LTE signaling connection.

[Claim 4] The terminal LTE and Wi-Fi coexistence testing method according to claim 3, wherein: the OT A antenna darkroom test system comprises an OTA darkroom, a path switcher, a sensitivity tester, a spectrum analyzer, and a host computer; the OTA darkroom includes a test Wi-Fi antenna and a test LTE antenna;

The path switch is connected to the connection antenna of the OTA dark room through the radio frequency line, and the sensitivity tester and the spectrum analyzer;

The upper computer is respectively connected to the path switcher, the sensitivity tester, and the spectrum analyzer.

[Claim 5] The terminal LTE and Wi-Fi coexistence testing method according to claim 1, wherein: the Wi-Fi signaling tester is CMW270; and the LTE signaling tester is CMW500

[Claim 6] The terminal LTE and Wi-Fi coexistence testing method according to claim 1, wherein: the transmit power in the first test parameter template includes 11 dBm and 19 dBm, and the channel includes the first Channel, third signal and fifth channel;

The transmit power in the second test parameter template includes 15 dBm and 22 dBm, and the channel includes a Band 40 39550 channel, a Band 7 20775 channel, and a Band 41 40465 channel.

[Claim 7] A test system for LTE performance under Wi-Fi high-power transmission of a terminal, characterized in that:

Adding a Wi-Fi signaling tester to the TA antenna darkroom test system; the RF line of the Wi-Fi signaling tester is connected to a test Wi-Fi antenna located in the darkroom near the Wi-Fi antenna of the terminal under test, a Wi-Fi signaling connection between the Wi-Fi signaling tester and the tested terminal; the Wi-Fi signaling tester, configured to control the Wi-Fi antenna of the tested terminal to operate in a maximum power transmission mode, And controlling the Wi-Fi antenna of the tested terminal to operate at a specified transmit power and a designated channel according to a preset first test parameter template including a transmit power and a channel corresponding to different channel interference scenarios;

The OT A antenna darkroom test system is used to obtain the total omnidirectional sensitivity of the LT E of the tested terminal under Wi-Fi high power transmission.

[Claim 8] The test system for LTE performance of a terminal Wi-Fi high power transmission according to claim 7, The UTA antenna darkroom test system includes an OTA darkroom, a path switcher, a sensitivity tester, a spectrum analyzer, and a host computer; the OTA darkroom includes a test Wi-Fi antenna and a test LTE antenna;

[Claim 9] The test system for LTE performance of a Wi-Fi high-power transmission of a terminal according to claim 8, wherein: the OTA darkroom includes a 3D turntable, two connected antennas, and a horn antenna; Two connecting antennas and a horn antenna are respectively connected to the path switch.

[Claim 10] The test system for LTE performance of the Wi-Fi high-power transmission of the terminal according to claim 7, wherein: the Wi-Fi signaling tester is a CMW270 Wi-Fi signaling tester.

[Claim 11] The test system for LTE performance of the Wi-Fi high-power transmission of the terminal according to claim 7, wherein: the transmit power in the first test parameter template includes 11 dBm and 19 dBm, The channel includes a first channel, a third signal, and a fifth channel.

[Claim 12] A test system for Wi-Fi performance under LTE high power transmission, characterized in that:

An LTE signaling tester is added to the TA antenna darkroom test system; the RF line of the LTE signaling tester is connected to the test LTE antenna located in the dark room near the LTE antenna of the tested terminal, and the LTE signaling tester is established. Measuring the LTE signaling connection of the terminal;

The LTE signaling tester is configured to control an LTE antenna of the tested terminal to operate in a maximum power transmission mode, and control a second test parameter template including a transmit power and a channel according to a preset corresponding different channel interference scenario. The LTE antenna of the tested terminal operates at a specified transmit power and a designated channel;

The OT A antenna darkroom test system is used to obtain the total omnidirectional sensitivity of the tested terminal under the LTE high power transmission Wi-F i.

[Claim 13] The test system for Wi-Fi performance of a terminal LTE high power transmission according to claim 12, wherein: the OTA antenna darkroom test system comprises an OTA darkroom, a path switcher, a sensitivity tester, and a spectrum. An analyzer and a host computer; the OTA dark room includes a test Test the Wi-Fi antenna and test the LTE antenna;

[Claim 14] The test system for Wi-Fi performance of a terminal LTE high-power transmission according to claim 13, wherein: the OTA darkroom includes a 3D turntable, two connected antennas, and a horn antenna; Two connecting antennas and a horn antenna are respectively connected to the path switch.

[Claim 15] The test system for the LTE high-power transmission Wi-Fi performance of the terminal according to claim 12, wherein: the LTE signaling tester is a CMW500 LTE signaling tester.

[Claim 16] The test system for Wi-Fi performance of a terminal LTE high-power transmission according to claim 12, wherein: the transmit power in the second test parameter template includes 15 dBm and 22 dBm, The channels include the Band40 39550 channel, the Band7 20775 channel, and the Band41 40465 channel.