CN101106792B - Parameter measurement method for wireless video terminal - Google Patents

Abstract

The invention discloses a parameter measure method for wireless video terminal. The method includes S102, establishing working condition and environment for measuring data of the wireless video terminal under a video physical condition, and making the wireless video terminal and a simulator maintain normal wireless emitting and receiving working state; and S104, measuring radiating power parameter under the video physical condition. By method in the invention, requirement for environment is reduced and the method is simple.

Description

The measurement method of parameters that is used for wireless video terminal

Technical field

The present invention relates to the communications field, relate in particular to a kind of measurement method of parameters that is used for wireless video terminal.

Background technology

Be defined as wireless video terminal below the present invention, with not in conventional wireless terminal.

The OTA/RPT characteristic of wireless terminal can objectively respond the radio link performance at this terminal.The OTA/RPT test model of wireless terminal reflection at present be based on the parameter characteristic under the voice physics scene (APS:Audio Physical Scenario), promptly the terminal head that is attached to the people carries out the characteristic under the such scene of voice call.Along with the fast development of cellular wireless networks, WLAN and the broadcasting and television network communication technology, wireless terminal need provide wireless video professional.This business is under video physics scene (IPS, Interactive-service Physical Scenario), to carry out concerning the OTA/RPT technology, and promptly wireless terminal need be positioned at the position, dead ahead of user's sight line, and keeps suitable distance with user's head.

Because under IPS and two kinds of scenes of APS, human body is different to the wireless terminal galvanomagnetic effect, thereby cause the TRP test model of its OTA/RPT different with the test limit value.The researchs such as OTA/RPT characteristic test method of wireless terminal under APS at present has been mature on the whole, but the research under IPS still belongs to blank at present both at home and abroad.

Summary of the invention

One or more problems in view of the above the present invention proposes a kind of measurement method of parameters that is used for wireless video terminal, can reduce environment requirement, and Easy Test and simple and easy to do.

The measurement method of parameters that is used for wireless video terminal according to the present invention comprises: S102; Set up wireless video terminal parameter testing condition of work and environment under the video physics scene, and make wireless video terminal and simulator keep normal wireless transmit and reception operating state; And S104, measure the radiant power parameter under the video physics scene.

Wherein S102 comprises: S102-2, set up the inside set relations between the testing component that is made up of wireless video terminal and number of people electromagnetic model.S102-4 places the test environment with extraneous radio shielding with testing component and simulator.S102-6 sets up normal wireless transmit link and receives link between testing component and simulator.

Wherein, S102-2 comprises: the base plane geometric center reference point of wireless video terminal is placed in the plane LRM that left ear L, auris dextra R and mouth M by number of people electromagnetic model constitute, and wherein, plane LRM constitutes the isosceles plane triangle; Make the plane, display screen place of wireless video terminal keep vertical, and make plane LRM and mouth M keep preset distance with plane LRM.

Wherein, simulator is base station simulator or network simulator, is used for the signal of anolog base station side., the space length between the antenna of testing component and the antenna of simulator is greater than equaling the antenna minimum test distance that common electromagnetic scattering dimensional parameters that forms of testing component and near electromagnetic scattering body thereof and testing component operating frequency parameter are confirmed.

Wherein, S104 comprises: S104-2, the enterprising row space of the tested sphere angle stragglingization in the far-field region of testing component.S104-4 gathers the pairing radiant power data of discretization Space Angle, composition data matrix [S _v(m, n)] _{M * N}Wherein, m=1,2 ... M, n=1,2 ... N, M>=1, N>=1, M is the sampling number of the vertical plane of getting for the sampling number of the equatorial plane of getting, N, like M=180, N=36, S _VBe place spatial point (θ _m, φ _n) the radiant power of correspondence.S104-6 is according to data matrix, according to formula $\mathrm{RP}\_\mathrm{OTA}/\mathrm{RPT}=\frac{1}{4\mathrm{\π}}\frac{\mathrm{\π}}{M}\·\frac{2\mathrm{\π}}{N}\underset{m=1}{\overset{M}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{S}_v(\frac{\mathrm{\π\; m}}{M},\frac{2\mathrm{\π\; n}}{N})\·\mathrm{Sin}\left(\frac{\mathrm{\π\; m}}{M}\right)$ Calculate the radiant power parameter value, wherein, m=1,2 ... M, n=1,2 ... N, M>=1, N>=1.

Through method of the present invention, can reduce environment requirement, and Easy Test and simple and easy to do.

Description of drawings

Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:

Figure 1A is the flow chart according to the new method of OTA/RPT TRP test under the IPS of the present invention;

Figure 1B is a flow chart of setting up wireless video terminal OTA/RPT test job condition according to of the present invention;

Fig. 1 C is the flow chart according to the TRP parameter of measurement DUT of the present invention;

Fig. 2 is according to OTA/RPT TRP testing component front view under the IPS of the present invention;

Fig. 3 is according to wireless video terminal structural representation of the present invention;

Fig. 4 is according to OTA/RPT TRP testing component end view under the IPS of the present invention;

Fig. 5 is according to sign IDUT test coordinate of the present invention definition; And

Fig. 6 is according to wireless terminal communications link sketch map of the present invention.

Embodiment

With reference to accompanying drawing, specify embodiment of the present invention below.

Figure 1A is the flow chart according to the new method of OTA/RPT TRP test under the IPS of the present invention.As shown in Figure 1, this method may further comprise the steps:

S102 sets up based on the wireless video terminal OTA/RPT test job conditions and environment under the IPS, and makes said wireless video terminal and network simulator keep normal wireless transmit and reception operating state.

Figure 1B is a flow chart of setting up wireless video terminal OTA/RPT test job condition according to of the present invention, and shown in Figure 1B, according to method of testing provided by the invention, said step S102 specifically may further comprise the steps:

S102-2, the inner geometry of setting up the testing component (DUT) that is made up of wireless video terminal and number of people electromagnetic model concerns that step S102-2 specifically comprises:

The base plane geometric center reference point A of wireless video terminal is placed by in number of people electromagnetic model L point (left ear mid point), R point (auris dextra mid point) and 3 definite plane LRM of M point (upper lip mid point), as shown in Figures 2 and 3.LRM is constituted isosceles plane triangle, i.e. ML=MR.Plane, wireless video terminal display screen place is kept vertical (as shown in Figure 4) with the LRM plane, and make MA=Dx=32cm.Above-mentioned DUT is placed on the OTA/RPT test platform.Fig. 5 is the sketch map that characterizes the definition of MAT (Multiple AccessTerminal, multi-access terminal) test coordinate, and the XOY plane among the figure is the reference planes among Fig. 4, the dotted line that the Z axle is the process reference point A among Fig. 4 and makes progress perpendicular to reference planes.Fig. 6 is according to wireless terminal communications link sketch map of the present invention.As shown in Figure 6, mobile phone to be measured and antenna thereof and human head model are placed on the microwave dark room environment of realizing electromagnetic shielding with the external electromagnetic ripple, join through low loss cable and network simulator.Three-dimensional turntable is a support platform, and this turntable is processed by the lower electromagnetic loss material, and the measurement to mobile phone to be measured does not exert an influence.

S102-4 places the test environment with extraneous radio shielding with above-mentioned DUT and simulator thereof.

According to method of testing provided by the invention, said simulator can be base station simulator or network simulator, is used for the signal of anolog base station side.

According to method of testing provided by the invention, said DUT and network simulator thereof place the anechoic chamber with extraneous radio shielding, are used to shield external interference.

S102-6 sets up the normal wireless transmit of above-mentioned DUT and network simulator and receives link.

According to method of testing provided by the invention; DUT and simulator satisfy the far field test condition; Comprise that promptly the space length between DUT antenna and the simulator antenna is greater than electromagnetic scattering dimensional parameters and the definite antenna minimum test distance of DUT operating frequency parameter that adds near the common formation of electromagnetic scattering body (comprising human body etc.) that influences its performance by DUT or by DUT; Specifically referring to document TSG-RAN Working Group 4 (Radio) meeting #39 Shanghai; China, May 8th-13th, 2006 R4-060597.

S104 measures the TRP parameter under the above-mentioned IP S.

Fig. 1 C is the flow chart according to the TRP parameter of measurement DUT of the present invention.Shown in Fig. 1 C, according to method of testing provided by the invention, step S104 may further comprise the steps.

S104-2, the enterprising row space of the tested sphere angle stragglingization in the RTUT far-field region;

S104-4 gathers the corresponding radiant power data of above-mentioned discretization Space Angle, composition data matrix [S _v(m, n)] _{M * N}, wherein, m=1,2 ... M, n=1,2 ... N, M>=1, N>=1, M is the sampling number of the vertical plane of getting for the sampling number of the equatorial plane of getting, N, like M=180, N=36, S _VBe place spatial point (θ _m, φ _n) the radiant power of correspondence;

S104-6 to said matrix, carries out weighted, obtains RP_OTA/RPT derivation value, promptly

$\mathrm{RP}\_\mathrm{OTA}/\mathrm{RPT}=\frac{1}{4\mathrm{\π}}\frac{\mathrm{\π}}{M}\·\frac{2\mathrm{\π}}{N}\underset{m=1}{\overset{M}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{S}_v(\frac{\mathrm{\πm}}{M},\frac{2\mathrm{\πn}}{N})\·\sin \left(\frac{\mathrm{\πm}}{M}\right).$

S _VBe place spatial point (θ _m, φ _n) corresponding radiant power.In the following formula, m=1,2 ... M, n=1,2 ... N, M >=1, N >=1.

In sum, it is low that the inventive method has environmental requirement, Easy Test, advantage such as simple and easy to do.

The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (3)

1. a measurement method of parameters that is used for wireless video terminal is characterized in that, comprising:

S102 sets up wireless video terminal parameter testing condition of work and environment under the video physics scene, and makes said wireless video terminal and simulator keep normal wireless transmit and reception operating state; And

S104 measures the radiant power parameter under the said video physics scene;

Wherein, said S102 comprises:

S102-2; Inner geometry relation between the testing component that foundation is made up of said wireless video terminal and number of people electromagnetic model; Wherein, Said inner geometry relation places in the plane LRM that left ear L, auris dextra R and mouth M by said number of people electromagnetic model constitute for the base plane geometric center reference point with said wireless video terminal, and wherein, plane LRM constitutes the isosceles plane triangle; And, make the plane, display screen place of said wireless video terminal keep vertical, and make said plane LRM and mouth M keep preset distance with said plane LRM;

S102-4 places the test environment with extraneous radio shielding with said testing component and said simulator; And

S102-6 sets up normal wireless transmit link and receives link between said testing component and said simulator;

Wherein, the space length between the antenna of the antenna of said testing component and said simulator is greater than equaling the antenna minimum test distance that common electromagnetic scattering dimensional parameters that forms of said testing component and near electromagnetic scattering body thereof and testing component operating frequency parameter are confirmed.

2. measurement method of parameters according to claim 1 is characterized in that said simulator is a network simulator, is used for the signal of anolog base station side.

3. measurement method of parameters according to claim 1 is characterized in that, said S104 comprises:

S104-2, the enterprising row space of the tested sphere angle stragglingization in the far-field region of testing component;

S104-4 gathers the pairing radiant power data of said discretization Space Angle, composition data matrix [S _v(m, n)] _{M * N}, wherein, m=1,2 ... M, n=1,2 ... N, M>=1, N>=1, M is the sampling number of the equatorial plane of getting, N is the sampling number of the vertical plane of getting, S _vBe place spatial point (θ _m, φ _n) the radiant power of correspondence;

S104-6 is according to said data matrix, according to formula $\mathrm{RP}\_\mathrm{OTA}/\mathrm{RPT}=\frac{1}{4\mathrm{\π}}\frac{\mathrm{\π}}{M}\·\frac{2\mathrm{\π}}{N}\underset{m=1}{\overset{M}{\mathrm{\Σ}}}\underset{n=1}{\overset{N}{\mathrm{\Σ}}}{S}_v(\frac{\mathrm{\π\; m}}{M},\frac{2\mathrm{\π\; n}}{N})\·\mathrm{Sin}\left(\frac{\mathrm{\π\; m}}{M}\right)$ Calculate the radiant power parameter value, wherein, m=1,2 ... M, n=1,2 ... N, M>=1, N>=1.

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