CN102404056A - Method and device for testing spatial radio-frequency performance of wireless communication product - Google Patents

Abstract

The invention discloses a method for testing spatial radio-frequency performance (OTA) of a wireless communication product, which comprises the following steps: dividing an OTA testing process into two parts in advance, pausing testing after completing point-taking testing of each part and storing a test result of a test point at the current part, and recovering and continuing to the point-taking testing the next part after a battery with full electric quantity is replaced for a tested device; and performing surface integral calculation to test results of all test points after completing point-taking testing of all parts to obtain total radiant power and all-around receiving sensitivity. The invention further discloses a device for testing the spatial radio-frequency performance of the wireless communication product. By means of the scheme, exhaustion of the battery capacity can be avoided, or influence on the authenticity and reliability of the OTA test results can be continuously reduced, the problem of power supply in the testing is resolved, and accuracy of the test results is improved.

Description

The method and apparatus of wireless communications products spacial radio frequency performance test

Technical field

The present invention relates to the measuring technology of wireless communications products, relate in particular to a kind of method and apparatus of wireless communications products spacial radio frequency performance test.

Background technology

Along with the develop rapidly of radiotechnics, the kind of wireless communications products is more and more.Comprise voice-and-data wireless handheld terminal, all kinds of internal or external data card and notebook computer etc.Because the good performance that transmits and receives is to guarantee the key of all kinds of wireless communications products communication qualities, therefore need to adopt spacial radio frequency performance test and index thereof to weigh the quality of wireless communications products.The main measurement index of spacial radio frequency performance (OTA, Over The Air) comprising: total radiant power (TRP, Total Radiated Power) and omnidirectional's receiving sensitivity (TIS, Total Isotropic Sensitivity).The good wireless communication products have TRP that is higher than the requirement threshold value and the TRS that is lower than the requirement threshold value usually.

At present the whole world has how tame normal structure all OTA to be tested to have carried out deep research and formulated corresponding standard.For example: cellular based communication Association for Standardization (CTIA), COST2100 (European Cooperation in Science and Technology), third generation partner program (3GPP; The 3rd Generation Partnership Project) and the standard of China's Telecommunication's ANSI (CCSA, China Communications Standards Association).Fairly perfect about OTA method of testing and the standard of singly going into singly (SISO, Single-input Single-output) single antenna hand-held wireless communication product at present.But OTA method of testing and standard about single antenna notebook computer, data card etc. and multiple-input, multiple-output (MIMO, Multiple-Input Multiple-Output) multi-antenna wireless communication product all still are blank.Though a lot of companies in the whole world pay close attention to and drop into research, do not confirm concrete method of testing as yet.

Traditional wireless communications products spacial radio frequency performance test method is summarized as follows: with tested radio communication product is that the origin of coordinates is set up by x, y, the defined spherical coordinate of z axle.The θ angle is the angle of test point and z axle positive direction, angle be the angle of x axle forward and the subpoint of test point on x, y plane.

In the CTIA standard, be on the sphere that is the center of circle, to get a test with the equipment under test for the measurement of TRP and TIS, its spheric coordinate system is as shown in Figure 1.Tested wireless communications products is positioned on first rotating shaft or second rotating shaft of testing apparatus; The first rotating shaft rotating range is the 0-180 degree; The anglec of rotation of representing first rotating shaft with θ; The second rotating shaft rotating range is the 0-360 degree, the anglec of rotation of expression second rotating shaft with

.As shown in Figure 2; Wherein the TRP test need whenever be got a test point at a distance from fixed step size number of degrees to θ (0-180 degree) and

(0-360 degree), for example: 15 degree; The TIS test need whenever be got a test point at a distance from fixed step size number of degrees to θ (0-180 degree) and

(0-360 degree) equally, for example: 30 degree.Because test point is that equal angles is chosen, so its right and wrong on sphere are equally distributed.The test result of the radiant power of all test points and receiving sensitivity is carried out surface integral according to formula (1) and (2) calculate TRP, TIS.In integral operation, to being positioned at two test points of θ=0, θ=180, its sine value is zero, so these two points are not tested.

$\mathrm{TRP}\≅\frac{1}{N_L}\underset{i=0}{\overset{n}{\mathrm{\Σ}}}\underset{j=0}{\overset{m}{\mathrm{\Σ}}}[{\mathrm{EiRP}}_{\mathrm{\θ}}({\mathrm{\θ}}_i,{\mathrm{\φ}}_j)+{\mathrm{EiRP}}_{\mathrm{\φ}}({\mathrm{\θ}}_i,{\mathrm{\φ}}_j)]\sin \left({\mathrm{\θ}}_i\right)---\left(1\right)$

Wherein, N and m are respectively total numbers of test points on θ and

angle, are determined by the aforementioned step-length number of degrees.(θ _i, φ _j) be a certain specific test point, this test point θ with

Numbering on the angle is respectively i and j.EiRP _θ(θ _i, φ _j) and EiRP _φ(θ _i, φ _j) at test point (θ _i, φ _j) record effectively each to the θ of radiant power to

To component.N _LBe to simplify the fixing coefficient that the surface integral computing obtains.

$\mathrm{TIS}\≅\frac{N_L}{\underset{i=0}{\overset{n}{\mathrm{\Σ}}}\underset{j=0}{\overset{m}{\mathrm{\Σ}}}[\frac{1}{{\mathrm{EIS}}_{\mathrm{\θ}}({\mathrm{\θ}}_i,{\mathrm{\φ}}_j)}+\frac{1}{{\mathrm{EIS}}_{\mathrm{\φ}}({\mathrm{\θ}}_i,{\mathrm{\φ}}_j)}]\sin \left({\mathrm{\θ}}_i\right)}---\left(2\right)$

Wherein, N and m are respectively total numbers of test points on θ and

angle, are determined by the aforementioned step-length number of degrees.(θ _i, φ _j) be a certain specific test point, this test point θ with Numbering on the angle is respectively i and j.EIS _θ(θ _i, φ _j) and EIS _φ(θ _i, φ _j) be respectively at test point (θ _i, φ _j) measure " effectively each to receiving sensitivity " θ to

To component.N _LBe to simplify the fixing coefficient that the surface integral computing obtains.

Along with the renewal of wireless communications products, increasing product not only has phonetic function, has at a high speed big band data functions such as video simultaneously concurrently by the Internet technology more products.Yet the OTA test experience according to traditional single antenna handheld terminal wireless product needs 2-3 hour usually.For product, notebook computer or the multi-antenna wireless communication equipment of big bandwidth high-speed data function, carrying out the OTA test can need the longer time.Therefore the power supply duration of wireless communications products becomes the key factor that influences the OTA test.For example: in test process, test is not also accomplished, but the radio communication equipment under test influences authenticity, the reliability of OTA test result because the capacity of battery exhausts automatic the termination.Again for example: in test process, along with the carrying out of test, the capacity of battery is also constantly reducing, and equally also can produce certain influence to authenticity, the reliability of the OTA test result of Wireless Telecom Equipment.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of method and apparatus of wireless communications products spacial radio frequency performance test, can solve the power supply powerup issue in the test, improves the accuracy of test result.

For achieving the above object, technical scheme of the present invention is achieved in that

The method of a kind of wireless communications products spacial radio frequency performance test provided by the invention is divided into two parts at least with the OTA test process; This method also comprises:

After a test is got in each part completion, suspend test, and the test result of current partial test point is stored, after the battery of equipment under test replacing Full Charge Capacity, recover to carry out next part and get a test;

After a test is got in all parts completion, the test result of all test points is carried out surface integral calculate, draw TRP, TIS.

In the such scheme; Said during with OTA test process separated into two parts, specifying θ in advance is that the test of getting for the 0-180 degree is a first to the 0-90 degree with

; θ is the 90-180 degree, and the test of getting for the 180-360 degree is a second portion with

; Said θ representes the anglec of rotation of first rotating shaft of testing apparatus, the anglec of rotation of second rotating shaft of said

expression testing apparatus.

In the such scheme, said time-out test is: manually suspend the test of test or automatic pause;

Said manual time-out test is: pause button is set in advance, observing after forward part is got a test completion, produces pause instruction through pressing said pause button, suspend the operation of testing software according to pause instruction;

The test of said automatic pause is: detect θ when getting a some test with

when current θ all surpasses the preassigned number of degrees when forward part with

, through the operation of pause instruction time-out testing software.

In the such scheme, said recovery test is: the recovery button is set in advance, behind the battery of equipment under test replacing Full Charge Capacity, through pressing the recovery button, triggers testing software and carry out a test of getting of next part; Perhaps,

After automatic pause test, start predefined timer, at the timing of timer then, trigger testing software and carry out a test of getting of next part.

In the such scheme; This method further comprises: before calculating TRP, TIS; When test point has two or more measurement results; Earlier said two or more measurement result values of averaging are calculated, afterwards mean value is carried out the calculating of TRP, TIS as the measurement result of said test point.

The device of a kind of wireless communications products spacial radio frequency performance test provided by the invention, this device comprises: test module, suspending/resuming module, temporary module, computing module; Wherein,

Test module is used to carry out a test of getting of spherical coordinate;

The suspending/resuming module is used for being divided into two-part at least OTA test process, and after a test was got in each part completion, the notice test module suspended test; After equipment under test was changed the battery of Full Charge Capacity, the notice test module recovered to carry out next part and gets a test;

Temporary module be used for the test result of the test point of each part is stored, and the test result of the test point of all parts that will store sends to computing module;

Computing module is used to receive the test result of the test point of all parts, the test result of all test points is carried out surface integral calculate TRP, TIS.

In the such scheme, said suspending/resuming module notice test module suspends test, for:

When said suspending/resuming module detects pause button and is pressed, send pause instruction to test module;

Perhaps; Said suspending/resuming module detect θ when getting a some test with

when current θ all surpasses the preassigned number of degrees when forward part with

, to test module transmission pause instruction.

In the such scheme, said suspending/resuming module notice test module recovers to carry out next part and gets a test, for:

Said suspending/resuming module is sent recovery notice to test module after detecting and recovering button and be pressed;

Perhaps, said suspending/resuming module starts predefined timer after sending pause instruction, before timing arrives, to the battery of equipment under test replacing Full Charge Capacity, at timing then, sends recovery notice to test module.

In the such scheme; Said computing module also was used for before calculating TRP, TIS; When detecting test point two or more measurement results being arranged; Earlier said two or more measurement result values of averaging are calculated, afterwards mean value is carried out the calculating of TRP, TIS as the measurement result of said test point.

The method and apparatus of a kind of wireless communications products spacial radio frequency performance test provided by the invention; In advance the OTA test process is divided into two parts at least;, each part completion suspends test after getting a test; And the test result that will work as the test point of forward part stores, and recovery is carried out next part and got a test after equipment under test is changed the battery of Full Charge Capacity; After a test is got in all parts completion, the test result of all test points is carried out surface integral calculate TRP, TIS; So, can avoid solving the power supply powerup issue in the test, improve the accuracy of test result because the capacity of battery exhausts or continuous the minimizing the authenticity of OTA test result, the influence of reliability.

Description of drawings

Fig. 1 is in the CTIA standard, for the sketch map of the spheric coordinate system of the measurement of TRP and TIS; Fig. 2 is in the CTIA standard, fastens the corresponding relation sketch map of a θ and when getting some test in spherical coordinate;

Fig. 3 realizes the schematic flow sheet of the method for wireless communications products spacial radio frequency performance test for the present invention;

Fig. 4 realizes the structural representation of the device of wireless communications products spacial radio frequency performance test for the present invention.

Embodiment

Basic thought of the present invention is: in advance the OTA test process is divided into two parts at least;, each part completion suspends test after getting a test; And the test result that will work as the test point of forward part stores, and recovery is carried out next part and got a test after equipment under test is changed the battery of Full Charge Capacity; After a test is got in all parts completion, the test result of all test points is carried out surface integral calculate TRP, TIS.

Through accompanying drawing and specific embodiment the present invention is done further detailed description below.

The present invention realizes the method for wireless communications products spacial radio frequency performance test, and as shown in Figure 3, this method comprises following step:

Step 301: the OTA test process is divided into two parts at least;

Example 1; With OTA test process separated into two parts, to specify θ in advance be the 0-90 degree, and the test of getting for the 0-180 degree is a first with

; θ is the 90-180 degree, and the test of getting for the 180-360 degree is a second portion with ;

Example 2; The OTA test process is divided into three parts, and to specify θ in advance be the 0-60 degree, and the test of getting for the 0-120 degree is a first with ; θ is the 60-120 degree, and the test of getting for the 120-240 degree is a second portion with

; θ is the 120-180 degree, and the test of getting for the 240-360 degree is a third part with

.

Step 302: each part to being divided into is got a test;, each part completion suspends test after getting a test; And the test result that will work as the test point of forward part stores, and recovery is carried out next part and got a test after equipment under test is changed the battery of Full Charge Capacity;

For example; According to the example in the step 301 1 with OTA test process separated into two parts after; At first testing software carries out a test of getting of spherical coordinate to first, accomplishes in first and suspends test after getting a test, and the test result of the test point of first is stored; After the battery of equipment under test replacing Full Charge Capacity, recover to carry out a test of getting of second portion, obtain the test result of the test point of second portion;

Said test result is radiant power and the receiving sensitivity a little of getting;

Said time-out test can be manually to suspend the test of test or automatic pause; Said manual time-out test can be that a pause button is set in advance, observes after forward part is got a test completion through software interface; Press said pause button and produce pause instruction; According to the operation of pause instruction time-out testing software, this pause button can be a physical form, also can be the form at computer software interface;

Said automatic pause test; Can be detect θ when getting a some test with at current θ with

during all above the preassigned number of degrees when forward part; Promptly get some test when accomplishing, suspend the operation of testing software through pause instruction when forward part;

Said recovery test can be after equipment under test is changed the battery of Full Charge Capacity, through pressing the recovery button, triggers testing software and carries out a test of getting of next part; Also can be after automatic pause test, start predefined timer, at the timing of timer then, trigger testing software and carry out a test of getting of next part; The timing of said timer is predefined, should guarantee the battery of time enough to equipment under test replacing Full Charge Capacity, is generally 5 minutes or 10 minutes.

Said recovery button is to be provided with in advance, can combine with pause button, also can be provided with separately.

Step 303: after in the end a part is accomplished and to be got a test, the test result of the test point of last part is stored, and the test result of all test points that will store is carried out surface integral and calculated TRP, TIS;

Concrete, after in the end a part is accomplished and got a test, the test result of the test point of last part is stored, and the test result of all test points that will store calculates TRP, TIS respectively according to formula (1), formula (2);

In this step; Before calculating TRP, TIS; When if test point has two or more measurement results, then earlier said two or more measurement result values of averaging are calculated, afterwards mean value is carried out the calculating of TRP, TIS as the measurement result of said test point.

In order to realize said method; The present invention also provides a kind of device of wireless communications products spacial radio frequency performance test; In advance the OTA test process is divided into two parts at least, as shown in Figure 4, this device comprises: test module 41, suspending/resuming module 42, temporary module 43, computing module 44; Wherein,

Test module 41 is used to carry out a test of getting of spherical coordinate;

Concrete, said test module 41 carries out a test of getting of spherical coordinate, after the pause instruction of receiving suspending/resuming module 42, suspends test; After the recovery notice of receiving suspending/resuming module 42, proceed to get a test; When getting a some EOT, the temporary module 43 of notice;

Suspending/resuming module 42 is used for being divided into two-part at least OTA test process, and after a test was got in each part completion, notice test module 41 suspended test; After equipment under test was changed the battery of Full Charge Capacity, notice test module 41 recovered to carry out next part and gets a test;

Concrete; To being divided into two-part at least OTA test process; Said suspending/resuming module 42 is sent pause instructions to test module 41 after a test is got in each part completion, and the temporary module 43 of notice; After equipment under test is changed the battery of Full Charge Capacity, send recovery notice to test module 41;

Temporary module 43 be used for the test result of the test point of each part is stored, and the test result of the test point of all parts that will store sends to computing module 44;

Concrete, said temporary module 43 stores the test result when the test point of forward part after the notice of at every turn receiving suspending/resuming module 42; After the notice of receiving test module 41, the test result of the test point of last part is stored, and the test result of the test point of all parts that will store sends to computing module 44;

Computing module 44 is used to receive the test result of test point of all parts of storage, the test result of all test points is carried out surface integral calculate TRP, TIS;

Further; Said computing module 44 also was used for before calculating TRP, TIS; When detecting test point two or more measurement results being arranged; Earlier said two or more measurement result values of averaging are calculated, afterwards mean value is carried out the calculating of TRP, TIS as the measurement result of said test point;

Said suspending/resuming module 42 is after a test is got in each part completion; Notice test module 41 suspends test; Concrete, observe after forward part is got a test completion through software interface, press the pause button that is provided with in advance; Suspending/resuming module 42 is sent pause instructions to test module 41 when detecting pause button and be pressed; Perhaps; Suspending/resuming module 42 detect θ when getting a some test with

at current θ with during all above the preassigned number of degrees when forward part; Promptly get some test when accomplishing, send pause instructions to test module 41 when forward part;

Said suspending/resuming module 42 is after changing the battery of Full Charge Capacity to equipment under test; Notice test module 41 recovers to carry out next part and gets a test; Concrete, after equipment under test is changed the battery of Full Charge Capacity, press the recovery button that is provided with in advance; Said suspending/resuming module 42 is sent recovery notice to test module 41 after detecting and recovering button and be pressed; Perhaps, said suspending/resuming module 42 starts predefined timer after sending pause instruction, before timing arrives, to the battery of equipment under test replacing Full Charge Capacity, at timing then, sends recovery notice to test module 41;

For example; In advance with OTA test process separated into two parts, can specify θ in advance is that the test of getting for the 0-180 degree is a first to the 0-90 degree with

; θ is the 90-180 degree, and the test of getting for the 180-360 degree is a second portion with

; 41 couples of θ of said test module carry out a test of getting of spherical coordinate with

according to the step-length number of degrees of setting; The tester can observe first through software interface and get after test accomplishes, and presses the pause button that is provided with in advance, and suspending/resuming module 42 is sent pause instructions to test module 41 when detecting pause button and be pressed; Perhaps; Said suspending/resuming module 42 detects θ when getting a some test and surpasses 90 degree with at current θ and surpass 180 with

when spending; Be that test is got when accomplishing by first, send pause instructions to test module 41; The temporary module 43 of said suspending/resuming module 42 notice after sending pause instruction after equipment under test is changed the battery of Full Charge Capacity, is sent recovery notice to test module 41; After said test module 41 is received pause instruction, suspend test, after receiving recovery notice, proceed to get a test; Said temporary module 43 stores the test result of the test point of first after the notice of receiving the suspending/resuming module; Said test module 41 when getting a some EOT, the temporary module 43 of notice; The test result of the test point of 43 pairs of second portions of said temporary module stores, and the test result of the test point of the test result of the test point of the first that stores and second portion is sent to computing module 44; Said computing module 44 receives the test result of the test point of all parts that store, and the test result of all test points is calculated TRP, TIS according to formula (1) and formula (2).

Through scheme of the present invention, the OTA test process is divided into two parts at least,, each part completion suspends test after getting a test, and after the battery of changing Full Charge Capacity, recover to carry out next part and get a test; Can avoid solving the power supply powerup issue in the test, improve the accuracy of test result because the capacity of battery exhausts or continuous the minimizing the authenticity of OTA test result, the influence of reliability.

The above is merely preferred embodiment of the present invention, is not to be used to limit protection scope of the present invention, all any modifications of within spirit of the present invention and principle, being done, is equal to replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (9)

1. the method for a wireless communications products spacial radio frequency performance test is characterized in that, spacial radio frequency performance (OTA) test process is divided into two parts at least; This method also comprises:

After a test is got in each part completion, suspend test, and the test result of current partial test point is stored, after the battery of equipment under test replacing Full Charge Capacity, recover to carry out next part and get a test;

After a test is got in all parts completion, the test result of all test points is carried out surface integral calculate, draw total radiant power (TRP), omnidirectional's receiving sensitivity (TIS).

2. method according to claim 1; It is characterized in that; Said during with OTA test process separated into two parts, specifying θ in advance is that the test of getting for the 0-180 degree is a first to the 0-90 degree with

; θ is the 90-180 degree, and the test of getting for the 180-360 degree is a second portion with ; Said θ representes the anglec of rotation of first rotating shaft of testing apparatus, the anglec of rotation of second rotating shaft of said

expression testing apparatus.

3. method according to claim 2 is characterized in that, said time-out test is: manually suspend the test of test or automatic pause;

Said manual time-out test is: pause button is set in advance, observing after forward part is got a test completion, produces pause instruction through pressing said pause button, suspend the operation of testing software according to pause instruction;

The test of said automatic pause is: detect θ when getting a some test with

when current θ all surpasses the preassigned number of degrees when forward part with

, through the operation of pause instruction time-out testing software.

4. method according to claim 2 is characterized in that, said recovery test is: the recovery button is set in advance, behind the battery of equipment under test replacing Full Charge Capacity, through pressing the recovery button, triggers testing software and carry out a test of getting of next part; Perhaps,

After automatic pause test, start predefined timer, at the timing of timer then, trigger testing software and carry out a test of getting of next part.

5. according to each described method of claim 1 to 4; It is characterized in that; This method further comprises: before calculating TRP, TIS; When test point has two or more measurement results, earlier said two or more measurement result values of averaging are calculated, afterwards mean value is carried out the calculating of TRP, TIS as the measurement result of said test point.

6. the device of a wireless communications products spacial radio frequency performance test is characterized in that this device comprises: test module, suspending/resuming module, temporary module, computing module; Wherein,

Test module is used to carry out a test of getting of spherical coordinate;

The suspending/resuming module is used for being divided into two-part at least OTA test process, and after a test was got in each part completion, the notice test module suspended test; After equipment under test was changed the battery of Full Charge Capacity, the notice test module recovered to carry out next part and gets a test;

Temporary module be used for the test result of the test point of each part is stored, and the test result of the test point of all parts that will store sends to computing module;

Computing module is used to receive the test result of the test point of all parts, the test result of all test points is carried out surface integral calculate TRP, TIS.

7. device according to claim 6 is characterized in that, said suspending/resuming module notice test module suspends test, for:

When said suspending/resuming module detects pause button and is pressed, send pause instruction to test module; Perhaps; Said suspending/resuming module detect θ when getting a some test with

when current θ all surpasses the preassigned number of degrees when forward part with

, to test module transmission pause instruction.

8. device according to claim 6 is characterized in that, said suspending/resuming module notice test module recovers to carry out next part and gets a test, for:

Said suspending/resuming module is sent recovery notice to test module after detecting and recovering button and be pressed;

Perhaps, said suspending/resuming module starts predefined timer after sending pause instruction, before timing arrives, to the battery of equipment under test replacing Full Charge Capacity, at timing then, sends recovery notice to test module.

9. according to each described device of claim 6 to 8; It is characterized in that; Said computing module also was used for before calculating TRP, TIS; When detecting test point two or more measurement results being arranged, earlier will said two or more measurement result values of averaging calculating, afterwards mean value is carried out the calculating of TRP, TIS as the measurement result of said test point.

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