CN101771474B - Method and system for testing reception sensitivity performance - Google Patents

Method and system for testing reception sensitivity performance Download PDF

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CN101771474B
CN101771474B CN200810187385.1A CN200810187385A CN101771474B CN 101771474 B CN101771474 B CN 101771474B CN 200810187385 A CN200810187385 A CN 200810187385A CN 101771474 B CN101771474 B CN 101771474B
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wireless data
data terminal
test
notebook computer
receiving sensitivity
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CN101771474A (en
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禹忠
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ZTE Corp
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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
    • 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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Abstract

The invention discloses a method and a system for testing reception sensitivity performance, wherein the method comprises the following steps of: constructing a notebook computer placing mode and a test model of a wireless data terminal of a notebook computer; constructing a spherical coordinate system by using an antenna of the wireless data terminal as an origin, and selecting a test point in the spherical coordinate system; and placing the test model in a completely dark wave chamber environment, enabling the wireless data terminal to work in a data mode, collecting the received power at the position of the test point in the spherical coordinate system by utilizing a measuring antenna, and obtaining the total-power reception sensitivity of equipment to be tested. Through the technical scheme, the influence of the coupling of each element of a notebook on the reception sensitivity performance of the wireless data terminal can be really reflected when the wireless data terminal of the real notebook computer is in the data mode, and the system has high authenticity and is easy to use.

Description

Testing receiving sensitivity performance method and system
Technical field
The present invention relates to the communications field, and especially, relate to a kind of testing receiving sensitivity performance method and system.
Background technology
At present, the test of wireless data terminal radio-frequency performance receives publicity, and the test of complete machine receiving sensitivity performance can objectively respond final emitting performance and the receptivity of wireless data terminal.In correlation technique, mainly containing two kinds of methods tests the receiving sensitivity performance of wireless data terminal: a kind of is to judge from the receiving sensitivity performance of antenna, the receiving sensitivity performance that stresses the radiation aspect test wireless data terminal of the antennas such as gain from wireless data terminal antenna, efficiency, directional diagram, this method of testing is called non-source test, another kind is in specific microwave dark room, the spacial radio frequency performance such as receiving sensitivity performance etc. of test wireless data terminal, this method of testing is called active test.
At present, only having could list marketing by the wireless data terminal of comprehensive model authentication (Full Type Approval, referred to as FTA) authentication test.In FTA test, the radio-frequency performance test of wireless data terminal under cable connection mode mainly carried out in radio-frequency performance test; As for the spacial radio frequency performance of wireless data terminal complete machine, in FTA test, there is no clear and definite regulation, but aerial download (Over The Air, referred to as OTA) test can make up the FTA test deficiency of test in this respect just.Simultaneously, the manufacturer of wireless data terminal need to have clearly and understand the receiving sensitivity performance of produced wireless data terminal, and need to improve by various measures the index that transmits and receives of wireless data terminal radiation, the wireless data terminal of receiving sensitivity poor performance will bring inconvenience to user's use.Especially when the external or built-in wireless data terminal that uses notebook computer carries out data communication, due to the antenna of the active original papers such as the mainboard of notebook computer and display screen near wireless data terminal, this will reduce the performance that transmits and receives of wireless data terminal, the transmitting and receiving performance and all can reduce of the complete machine radiation of external or built-in wireless data terminal.Therefore, in wireless data terminal R&D process, answer the impact that transmit and receive performance of quantitative measurment notebook on external or built-in wireless data terminal, be optimized design, transmitting and receiving property is reduced to be reduced, that is, reduce each original paper of notebook and the antenna electric magneto-coupling effect of external or built-in wireless data terminal.Wherein, emission parameter comprises total radiant power (Total Radiated Power, referred to as TRP), receives parameter and comprises global radiation sensitivity (Total RadiatedSensitivity, referred to as TRS).
The TRS of mobile terminal can be reflected in whole radiation sphere, the situation of the receiving sensitivity of wireless terminal, and it has reflected the situation of wireless terminal complete machine receiving sensitivity, relevant with the receiving sensitivity performance of antenna with the conducted susceptibility of wireless terminal.
Figure G2008101873851D00021
formula (1)
Wherein, equivalent omnidirectional received power (EIS) has defined available output power of antenna, and for example, each polarization has reached receivable thresholding, and Ω is for describing the solid angle of direction, and f is frequency, θ and
Figure G2008101873851D00022
angle parameter for orthogonal polarization.
formula (2)
Wherein, N and M be to θ and
Figure G2008101873851D00024
a plurality of sampling intervals.θ nwith
Figure G2008101873851D00025
measured angular, EIS θ(θ i, φ j) for angle be θ i, φ jthe equivalent omnidirectional received power horizontal polarization component value of test point, unit is milliwatt.EIS θ(θ i, φ j) for angle be θ i, φ jthe equivalent omnidirectional received power perpendicular polarization component value of test point, unit is milliwatt.
In the spacial radio frequency performance adopting at present, the apparatus and method that TRP measures are all for speech pattern, do not relate to the external or built-in wireless data terminal of notebook computer, in realizing process of the present invention, present inventor finds such scheme, and at least there are the following problems: and even the not fully impact of external or built-in each original paper of wireless data terminal notebook of notebook computer and the electromagnetic coupled of wireless data terminal antenna under reflection data pattern, therefore the result that, adopts current scheme to measure is inaccurate.
Summary of the invention
Consider that the TRP measurement scheme existing in correlation technique does not have fully to reflect the impact of the electromagnetic coupled of wireless data terminal and antenna under data pattern, thereby cause the inaccurate problem of test result and propose the present invention, for this reason, main purpose of the present invention is to provide a kind of improved testing receiving sensitivity performance scheme, to solve the problems referred to above of existing in correlation technique one of at least.
To achieve these goals, according to an aspect of the present invention, provide a kind of testing receiving sensitivity performance method.
Testing receiving sensitivity performance method according to the present invention comprises: the test model of the wireless data terminal of structure notebook computer modes of emplacement and notebook computer; The antenna at wireless data end of take is that initial point builds spheric coordinate system, and in spheric coordinate system, selects test point; Test model is placed under complete dark ripple room environmental, wireless data is worked eventually under data pattern, utilize the received power of measuring antenna collecting test point place in spheric coordinate system, and obtain thus the gross power receiving sensitivity of Devices to test.
Wherein, structure notebook computer modes of emplacement comprises: measurement fixedly notebook folding are to predetermined angle; The test model of wireless data terminal of structure notebook computer comprises: in the situation that wireless data terminal is external wireless data terminal, by the antenna of external wireless data terminal, vertical or level is in notebook computer bottom surface; In the situation that wireless data terminal is built-in wireless data terminal, the antenna of built-in wireless data terminal, perpendicular to notebook computer bottom surface, and is kept to preset distance by external cable and notebook computer.
Wherein, measuring antenna is dual polarized antenna.
Wherein, the received power collecting in each test point comprises: horizontal polarization component and perpendicular polarization component.
Wherein, after collecting horizontal polarization component and perpendicular polarization component, the processing that obtains the power receiving sensitivity of Devices to test is specially: by formula (1), obtain respectively total receiving sensitivity at each test point place, afterwards total receiving sensitivity at each test point place is normalized:
Figure G2008101873851D00041
formula (1), wherein, TRS is total receiving sensitivity at current test point place, θ and for measured angular, EIS θwith
Figure G2008101873851D00043
be respectively horizontal polarization component and perpendicular polarization component, Ω is the stereo directional angle of current test point in spheric coordinate system, the work at present frequency that f is Devices to test; By formula (2), obtain total receiving sensitivity of Devices to test:
Figure G2008101873851D00044
formula (2), wherein, total receiving sensitivity that TRS is Devices to test, N and M for respectively to θ and
Figure G2008101873851D00045
a plurality of sampling intervals,
Figure G2008101873851D00046
for measured angular is θ iand φ jthe horizontal polarization component of received power of test point, and for measured angular is θ iand φ jthe perpendicular polarization component of received power of test point, the work at present frequency that f is Devices to test.
To achieve these goals, according to a further aspect in the invention, provide a kind of testing receiving sensitivity performance system.
Testing receiving sensitivity performance system according to the present invention comprises: notebook computer wireless data terminal test table, be used for according to predetermined direction and predetermined angular rotating and radio data terminal, notebook computer folding angle is measured, and distance between external wireless data terminal and notebook computer is measured; Fully anechoic chamber, is used to wireless data terminal that the environment of test is provided; Spherical coordinate is set up and test module, is that initial point builds spheric coordinate system, and in spheric coordinate system, selects test point for take the antenna of wireless data terminal; Sphere place system, for controlling wireless data terminal and the angle position of measuring antenna in spheric coordinate system; Measure antenna, under the control at sphere place system, gather wireless data terminal in the received power at test point place, wherein, wireless data terminal work and data pattern; Processing unit, for obtaining the gross power receiving sensitivity of Devices to test according to the received power at test point place.
Wherein, notebook computer wireless data terminal test table specifically for: structure notebook computer modes of emplacement, comprising: measure and fixedly notebook folding to predetermined angle; The test model of wireless data terminal of structure notebook computer comprises: in the situation that wireless data terminal is external wireless data terminal, by the antenna of external wireless data terminal, vertical or level is in notebook computer bottom surface; In the situation that wireless data terminal is built-in wireless data terminal, the antenna of built-in wireless data terminal, perpendicular to notebook computer bottom surface, and is kept to preset distance by external cable and notebook computer.
Wherein, measuring antenna is dual polarized antenna.
Wherein, the received power collecting in each test point comprises horizontal polarization component and perpendicular polarization component.
Wherein, measure antenna and by formula (1), obtain respectively total receiving sensitivity at each test point place, afterwards total receiving sensitivity at each test point place is normalized:
formula (1), wherein, TRS is total receiving sensitivity at current test point place, θ and
Figure G2008101873851D00062
for measured angular, EIS θwith
Figure G2008101873851D00063
be respectively horizontal polarization component and perpendicular polarization component, Ω is the stereo directional angle of current test point in spheric coordinate system, the work at present frequency that f is Devices to test.Processing unit obtains total receiving sensitivity of Devices to test by formula (2):
Figure G2008101873851D00064
formula (2), wherein, total receiving sensitivity that TRS is Devices to test, N and M for respectively to θ and
Figure G2008101873851D00065
a plurality of sampling intervals,
Figure G2008101873851D00066
for measured angular is θ iand φ jthe horizontal polarization component of received power of test point, and
Figure G2008101873851D00067
for measured angular is θ iand φ jthe perpendicular polarization component of received power of test point, the work at present frequency that f is Devices to test.
By means of technical scheme of the present invention, by structure measurement model, the wireless data terminal of notebook is measured, having solved the TRP measurement scheme existing in correlation technique does not have fully to reflect the impact of the electromagnetic coupled of wireless data terminal and antenna under data pattern, thereby cause the inaccurate problem of test result, can reflect truly that true notebook computer wireless data terminal is in each original paper coupling impact on the receiving sensitivity performance of wireless data terminal of the lower notebook of data pattern, there is higher authenticity, and be easy to use.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in the specification write, claims and accompanying drawing.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is according to the flow chart of the testing receiving sensitivity performance method of the embodiment of the present invention;
Fig. 2 is according to the schematic diagram of the notebook computer coordinate system adopting in the testing receiving sensitivity performance method of the inventive method embodiment;
Fig. 3 is the schematic diagram of sampling by changing terminal and the relative angle of measuring antenna in spheric coordinate system according to the embodiment of the present invention;
Fig. 4 is according to the flow chart of the processing example of the testing receiving sensitivity performance method of the inventive method embodiment;
Fig. 5 places schematic diagram according to the testing receiving sensitivity performance method of the inventive method embodiment in carrying out test process.
Embodiment
Functional overview
In correlation technique, exist TRP measurement scheme can not fully reflect the impact of the electromagnetic coupled of wireless data terminal and antenna under data pattern, thereby cause the inaccurate problem of test result, for this reason, the invention provides a kind of improved testing receiving sensitivity performance scheme, in technical scheme of the present invention, need to construct the test model of the wireless data terminal of notebook computer modes of emplacement and notebook computer; After having constructed test model, the antenna at wireless data end of take is that initial point builds spheric coordinate system, and in spheric coordinate system, selects test point; Test model is placed under complete dark ripple room environmental, wireless data is worked eventually under data pattern, utilize the received power of measuring antenna collecting test point place in spheric coordinate system, and obtain thus the gross power receiving sensitivity of Devices to test.
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
In the following description, for the object of explaining, a plurality of specific details have been described, to provide thorough understanding of the present invention.Yet, obviously, in the situation that there is no these specific detail, also can realize the present invention, in addition, in the situation that do not deviate from the spirit and scope that claims are illustrated, in following embodiment and embodiment, obtain each details and can carry out various combinations.
Embodiment of the method
According to embodiments of the invention, a kind of testing receiving sensitivity performance method is provided, Fig. 1 is according to the flow chart of the testing receiving sensitivity performance method of the embodiment of the present invention, as shown in Figure 1, comprises following processing (step S102-step S106):
Step S102, adjust notebook PC testing turntable, structure notebook wireless data terminal test model, wherein, in model, (notebook computer is opened according to certain angle, measurement fixedly notebook folding are to predetermined angle), when wireless data terminal is built-in wireless data terminal, the antenna of built-in wireless data terminal should be vertically or horizontal parallel in notebook computer bottom surface, when wireless data terminal is external wireless data terminal, the antenna of external wireless data terminal should be perpendicular to notebook bottom surface, and keep certain distance by external cable and notebook computer,
Step S104, as shown in Figure 2, the antenna of wireless data terminal of take builds spheric coordinate system (take antenna set up the coordinate system of X-axis, Y-axis, Z axis for initial point) as initial point, and in spheric coordinate system, selects test point;
Step S106, test model is placed under complete dark ripple room environmental, wireless data terminal is worked under data pattern, utilize the received power of measuring antenna collecting test point place in spheric coordinate system, it should be noted that, the total radiant power collecting in each test point comprises horizontal polarization component and perpendicular polarization component, and obtains thus the gross power receiving sensitivity of Devices to test, wherein, measuring antenna can be dual polarized antenna.
Fig. 3 is the schematic diagram of sampling by changing terminal and the relative angle of measuring antenna in spheric coordinate system according to the embodiment of the present invention.As shown in Figure 3, the model of holding terminal can rotate at horizontal plane, and antenna (probe antenna) can prolong sphere and move sampling in the plane perpendicular to horizontal plane, thereby obtains the sampled result of each test point.Certainly, can also adopt other rotation and/or mobile mode, will not enumerate here.
After test point collects horizontal polarization component and perpendicular polarization component, by formula (1), obtain respectively total receiving sensitivity at each test point place, afterwards total receiving sensitivity at each test point place is normalized:
Figure G2008101873851D00091
formula (1),
Wherein, TRS is total receiving sensitivity at current test point place, θ and
Figure G2008101873851D00092
for measured angular, EIS θwith
Figure G2008101873851D00093
be respectively horizontal polarization component and perpendicular polarization component, Ω is the stereo directional angle of current test point in spheric coordinate system, the work at present frequency that f is Devices to test;
Subsequently, by formula (2), obtain total receiving sensitivity of Devices to test:
Figure G2008101873851D00101
formula (2),
Wherein, total receiving sensitivity that TRS is Devices to test, N and M for respectively to θ and
Figure G2008101873851D00102
a plurality of sampling intervals, for measured angular is θ iand φ jthe horizontal polarization component of received power of test point, and
Figure G2008101873851D00104
for measured angular is θ iand φ jthe perpendicular polarization component of received power of test point, the work at present frequency that f is Devices to test.
Below in conjunction with Fig. 4, the concrete processing to above-mentioned processing scheme in the middle of practical application describes, and Fig. 4 is according to the flow chart of the processing example of the testing receiving sensitivity performance method of the inventive method embodiment.As shown in Figure 4, can comprise the following steps (step S 1-step S6):
Step S1 arranges notebook computer and external or built-in wireless data terminal angle and distance, measuring system constructing under data pattern;
Particularly, as shown in Figure 5, open notebook computer and make its screen side and keyboard side between for example, in certain angle: above-mentioned angle can be 110 ° ± 2 °, and for example make between itself and vertical axis, in certain angle: above-mentioned angle can be 20 ° ± 2 °.When wireless data terminal is while being built-in, wireless data terminal antenna should be vertically or horizontal parallel in notebook bottom surface, when wireless data terminal is external wireless data terminal, external wireless data terminal antenna should be perpendicular to notebook bottom surface, and keep certain distance by external cable and notebook computer, for example: with the distance of notebook computer maintenance 20cm.Notebook computer remains under normal boot-strap state and tests, and need to close scan function, monitoring mode, screen protection pattern and the battery saving mode of notebook computer, in addition, also need screen background brightness to be set to maximum, and be set to adopt powered battery;
Step S2 sets up spherical coordinate system, and chooses test point centered by wireless data terminal antenna position;
Particularly, based on Spherical Test method, can define two kinds of navigation systems: built-up shaft system and distribution axle system.Wherein, built-up shaft system refers to that two rotating shafts are separate, as shown in Figure 3, for example, can on θ axis positioner basis, install φ axis positioner additional, and wireless data terminal is simultaneously around two axle rotations.Two rotating shafts of distribution axle system are together with each other.Now, measure antenna and can rotate around θ axle, wireless data terminal can rotate around φ axle;
Step S3, arranges the wireless link of notebook computer, and makes it in normal operating conditions, meets test condition;
Particularly, in step S3, wireless data terminal, in supported frequency range, should be chosen high, medium and low three channels in all frequency ranges and set up link and test, and for the wireless data terminal of telescopic antenna formula, should and shrink under two states and test in the stretching, extension of antenna; In TRS test, to intermediate channels, also to carry out relative sensitivity test meeting under largest interval condition.Relative sensitivity test request finds the measurement point of the optimum reception sensitivity of complete test channel, adjust the position of locator and the polarization of test consistent with optimum reception sensitive point, regulate the power output of base station simulator to be greater than optimum reception sensitivity certain value as+5dB, under this power condition, wireless data terminal is in the sensitivity of intermediate channels in test, and the sensitivity of intermediate channels should not surpass the error rate/frame error rate of complete test channel;
Step S4, send continuously UP power control command to notebook computer, for example, until the error rate of notebook computer arrives certain desired value (, the error rate arrives at least desired value of 20000bits1.0% ± 0.2%), and realize after the maximum power of agreement, start to send data;
Step S5, in the test point of the setting test of sampling, gathers the equivalent received power horizontal polarization component EiS of omnidirectional in horizontal and vertical direction respectively θ(θ i, φ j) and the equivalent received power perpendicular polarization component EiS of omnidirectional φ(θ i, φ j);
By controlling the relative position of wireless data terminal and test antenna, can be in three dimensions efficiently sampling and the sensitivity of accepting of measuring each point.Afterwards, by formula (3), the EIS data of measuring are normalized:
Δ EIS ‾ = 1 n Σ i = 1 n EISstd i - EISnstd i Formula (3)
Wherein, EISstd istandard sensitive measurement, EISnstd ithe power measurement of criteria of right and wrong modulation, n is the number of reference measure point;
Step S6, will utilize formula (1) and (2) in the measured data of each test point, obtains the spacial radio frequency performance receiving sensitivity index TRS of mobile terminal device or other wireless communications products.
Although the folding type notebook computer of take has been described the present invention as example before, the present invention can construct equally the notebook of the built-in or external wireless data terminal of other types and measure, and its method of measurement and method recited above are similar, no longer repeats here.
System embodiment
According to embodiments of the invention, a kind of testing receiving sensitivity performance system is provided, has comprised notebook computer wireless data terminal test table, fully anechoic chamber, spherical coordinate foundation and test module, sphere place system, wireless data terminal measurement antenna, processing unit.Below, above-mentioned module is described in detail.
According to the testing receiving sensitivity performance system of the embodiment of the present invention, comprise: be used to wireless data terminal that the environment fully anechoic chamber of test is provided, fully anechoic chamber can fully be isolated the electromagnetic interference from external environment condition, the screening effectiveness of fully anechoic chamber meets EN50147-1 standard-required at 800Hz within the scope of 4GHz, and the dead zone space size of fully anechoic chamber need to meet test request.
In fully anechoic chamber, be provided with notebook computer wireless data terminal test table, on turntable, there are fixing or mobile goniometer and rangefinder, wherein, notebook computer wireless data terminal test table is used for according to predetermined direction and predetermined angular rotating and radio data terminal, and notebook computer folding angle is measured, and distance between external wireless data terminal and notebook computer is measured, particularly, notebook computer need to be opened certain angle as requested, and utilize the goniometer on turntable to demarcate, when wireless data terminal is while being built-in, wireless data terminal antenna should be vertically or level in notebook bottom surface, when wireless data terminal is external wireless data terminal, the antenna of external wireless data terminal should be perpendicular to notebook computer bottom surface, by external cable and notebook computer, keep certain distance, and utilize the rangefinder of turntable to find range.
In addition, radiance test macro also comprises: spherical coordinate is set up and test module, is that initial point builds spheric coordinate system, and in spheric coordinate system, selects test point for take the antenna of Devices to test; Particularly, spherical coordinate is set up and test module can be set up spheric coordinate system, for wireless communications products, take that it is set up and to have the defined spheric coordinate system of x, y, z axle as initial point, wherein, θ angle is the angle of test point and z axle positive direction, φ angle is the angle of x axle forward and the subpoint of test point in x, y plane, and under this spheric coordinate system, chooses test coordinate points.
Sphere place system, for controlling wireless terminal and the angle position of measuring antenna in spheric coordinate system; In order to cover whole sphere, the final structure of test environment is by supporting construction with for placing wireless data terminal, and with respect to measure that test placer that antenna controls forms can mobile wireless data terminal/model and/or measure antenna to cover the model of the whole spherical radiation of wireless data terminal, thereby in each test point, sample.
Measure antenna, under the control at sphere place system, the wireless terminal under image data pattern is in the received power at test point place; In actual application, measurement antenna is dual polarized antenna, and dual polarized antenna can obtain two quadrature components of every bit place electric field vector on sphere.And in each test point, collect the received power that comprises horizontal polarization component and perpendicular polarization component.
Wherein, measure antenna and by formula (1), obtain respectively total receiving sensitivity at each test point place, afterwards total receiving sensitivity at each test point place is normalized:
Figure G2008101873851D00141
formula (1),
Wherein, TRS is total receiving sensitivity at current test point place, θ and for measured angular, EIS θwith be respectively horizontal polarization component and perpendicular polarization component, Ω is the stereo directional angle of current test point in spheric coordinate system, the work at present frequency that f is Devices to test.
In addition, radiance test macro also comprises: processing unit, and for obtain the gross power receiving sensitivity of Devices to test according to the received power at test point place.Particularly, above-mentioned processing unit obtains total receiving sensitivity of Devices to test by formula (2):
Figure G2008101873851D00144
formula (2),
Wherein, total receiving sensitivity that TRS is Devices to test, N and M for respectively to θ and
Figure G2008101873851D00145
a plurality of sampling intervals, for measured angular is θ iand φ jthe horizontal polarization component of received power of test point, and
Figure G2008101873851D00147
for measured angular is θ iand φ jthe perpendicular polarization component of received power of test point, the work at present frequency that f is Devices to test.
Described wireless data terminal can comprise monotype terminal hereinbefore, monotype terminal comprises TD SDMA access (Time Division-Synchronous CodeDivision Multiple Access, referred to as TD-SCDMA), Wideband Code Division Multiple Access (WCDMA) access (Wideband Code Division Multiple Access, referred to as WCDMA), code division multiple access access (Code Division Multiple Access, referred to as CDMA), global system for mobile communications (Global system for mobile communication, referred to as GSM), individual radio connecting system (also can be described as Personal Handyphone System), bluetooth (BLUETOOTH), WLAN (wireless local area network) (Wireless Local, referred to as WLAN), global positioning system (Global Positioning System, referred to as GPS), radio-frequency (RF) identification (Radio Frequency Identity, referred to as RFID) and micro-wave access to global intercommunication (Worldwide Interoperability for Microwave Access, referred to as Wimax) etc. communication standard or its combination.The external mode of wireless data terminal and notebook computer can be the connection modes such as USB, Institute of Electrical and Electronics Engineers (Institute for Electrical and ElectronicEngineers, referred to as IEEE) 1394, serial ports or parallel port.
In sum, by means of technical scheme of the present invention, by structure measurement model, the wireless data terminal of notebook is measured, having solved the TRP measurement scheme existing in correlation technique does not have fully to reflect the impact of the electromagnetic coupled of wireless data terminal and antenna under data pattern, thereby cause the inaccurate problem of test result, can truly reflect that true notebook computer wireless data terminal is in each original paper coupling impact on the receiving sensitivity performance of wireless data terminal of the lower notebook of data pattern, there is high authenticity, and be easy to use.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in storage device and be carried out by calculation element, or they are made into respectively to each integrated circuit modules, or a plurality of modules in them or step are made into single integrated circuit module to be realized.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.

Claims (4)

1. a testing receiving sensitivity performance method, is characterized in that, comprising:
The test model of the wireless data terminal of structure notebook computer modes of emplacement and notebook computer;
The antenna of described wireless data terminal of take is that initial point builds spheric coordinate system, and selects test point in described spheric coordinate system;
Described test model is placed under complete dark ripple room environmental, described wireless data terminal is worked under data pattern, utilize measurement antenna in described spheric coordinate system, to gather the received power at described test point place, and obtain thus the gross power receiving sensitivity of Devices to test, wherein, described measurement antenna is dual polarized antenna, and the received power collecting in described each test point comprises: horizontal polarization component and perpendicular polarization component;
After collecting described horizontal polarization component and described perpendicular polarization component, the processing that obtains the power receiving sensitivity of described Devices to test is specially:
The total receiving sensitivity that obtains respectively described each test point place by formula (1), is normalized total receiving sensitivity at described each test point place afterwards:
Figure FDA0000445303900000011
formula (1),
Wherein, TRS is total receiving sensitivity at current test point place, θ and
Figure FDA0000445303900000012
for measured angular, EIS θwith
Figure FDA0000445303900000013
be respectively horizontal polarization component and perpendicular polarization component, Ω is the stereo directional angle of described current test point in spheric coordinate system, the work at present frequency that f is described Devices to test;
By formula (2), obtain total receiving sensitivity of described Devices to test:
Figure FDA0000445303900000021
formula (2),
Wherein, total receiving sensitivity that TRS ' is described Devices to test, N and M for respectively to θ and
Figure FDA0000445303900000022
a plurality of sampling intervals, for measured angular is θ iwith
Figure FDA0000445303900000024
the horizontal polarization component of received power of test point, and for measured angular is θ iwith
Figure FDA0000445303900000026
the perpendicular polarization component of received power of test point, the work at present frequency that f is described Devices to test.
2. method according to claim 1, is characterized in that,
Constructing described notebook computer modes of emplacement comprises: measurement fixedly notebook folding are to predetermined angle;
The test model of constructing the wireless data terminal of described notebook computer comprises:
In the situation that described wireless data terminal is external wireless data terminal, by the antenna of described external wireless data terminal, vertical or level is in notebook computer bottom surface;
In the situation that described wireless data terminal is built-in wireless data terminal, the antenna of described built-in wireless data terminal, perpendicular to notebook computer bottom surface, and is kept to preset distance by external cable and notebook computer.
3. a testing receiving sensitivity performance system, is characterized in that, comprising:
Notebook computer wireless data terminal test table, for according to predetermined direction and predetermined angular rotating and radio data terminal, measures notebook computer folding angle, and distance between external wireless data terminal and notebook computer is measured;
Fully anechoic chamber, is used to described wireless data terminal that the environment of test is provided;
Spherical coordinate is set up and test module, is that initial point builds spheric coordinate system, and selects test point for take the antenna of described wireless data terminal in described spheric coordinate system;
Sphere place system, for controlling described wireless data terminal and the angle position of measuring antenna in described spheric coordinate system;
Described measurement antenna, under the control at described sphere place system, gathers described wireless data terminal in the received power at described test point place, wherein, and described wireless data terminal work and data pattern;
Processing unit, for obtaining the gross power receiving sensitivity of Devices to test according to the received power at described test point place;
Wherein, described measurement antenna is dual polarized antenna, and the received power collecting in described each test point comprises: horizontal polarization component and perpendicular polarization component;
Described measurement antenna obtains respectively total receiving sensitivity at described each test point place by formula (1), afterwards total receiving sensitivity at described each test point place is normalized:
Figure FDA0000445303900000031
formula (1),
Wherein, TRS is total receiving sensitivity at current test point place, θ and
Figure FDA0000445303900000032
for measured angular, EIS θwith
Figure FDA0000445303900000033
be respectively horizontal polarization component and perpendicular polarization component, Ω is the stereo directional angle of described current test point in spheric coordinate system, the work at present frequency that f is described Devices to test.
Described processing unit obtains total receiving sensitivity of described Devices to test by formula (2):
Figure FDA0000445303900000034
formula (2),
Wherein, total receiving sensitivity that TRS ' is described Devices to test, N and M for respectively to θ and a plurality of sampling intervals,
Figure FDA0000445303900000042
for measured angular is θ iwith the horizontal polarization component of received power of test point, and
Figure FDA0000445303900000044
for measured angular is θ iwith
Figure FDA0000445303900000045
the perpendicular polarization component of received power of test point, the work at present frequency that f is described Devices to test.
4. system according to claim 3, is characterized in that, notebook computer wireless data terminal test table specifically for:
Construct described notebook computer modes of emplacement, comprising: measurement fixedly notebook folding are to predetermined angle;
The test model of constructing the wireless data terminal of described notebook computer comprises:
In the situation that described wireless data terminal is external wireless data terminal, by the antenna of described external wireless data terminal, vertical or level is in notebook computer bottom surface;
In the situation that described wireless data terminal is built-in wireless data terminal, the antenna of described built-in wireless data terminal, perpendicular to notebook computer bottom surface, and is kept to preset distance by external cable and notebook computer.
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