CN102014402B - Method and device for testing global radiation power in multi-antenna system - Google Patents

Abstract

The invention discloses method and device used for testing global radiation power in a multi-antenna system, which are used for solving the technical problem for measuring TRP (TV Remote Pickup) of a data stream in an MIMO (Multiple Input Multiple Output) system. The testing method comprises the following steps of: measuring the TRP when each data stream is individually started; measuring the TRP when all data streams are completely started; and calculating a global radiation power value of each data stream when all data streams are completely started according to the TRP when each data stream is individually started and the TRP when all data streams are completely started.

Description

The method of testing of total radiant power and device in a kind of multiaerial system

Technical field

The present invention relates to the radio frequency testing technical field of wireless communications products, relate in particular to multiaerial system (multiple-input and multiple-output, MIMO) spacial radio frequency performance (Over The Air, OTA) method of testing and the device of total radiant power (TotalRadiated Power, TRP) in.

Background technology

Development along with modern industry, all kinds of radio communication products only possess the good performance guarantee communication quality that transmits and receives, namely, total radiant power will be higher than certain value, global radiation sensitivity (Total RadiatedSensitivity, TRS) to lower than certain value, that is to say that spacial radio frequency performance (Over The Air, OTA) test index is good.

CTIA (cellular based communication Association for Standardization) normally uses in network in order to ensure mobile terminal device, the testing standard of having formulated the mobile terminal spacial radio frequency performance is " The test plan for mobile stationOTA performance ", at present, the mobile terminal spacial radio frequency performance that a lot of operations commercial city requires to enter its network will be tested according to the CTIA standard-required, and TRP, TRS will satisfy certain limit value requirement.

In the CTIA standard, be to carry out access point testing on the sphere take equipment under test as the center of circle for the measurement of TRP and TRS.For the performance that transmits and receives of accurate evaluation equipment under test, need to choose abundant test point.The spheric coordinate system schematic diagram of Fig. 1 for setting up take tested radio communication product as initial point, tested wireless communications products is positioned on first rotating shaft or the second rotating shaft of a testing apparatus, the first rotating shaft rotating range is the 0-180 degree, and the second rotating shaft rotating range is the 0-360 degree.Wherein the TRP test need to be got a test point every 15 degree θ (0-180 degree) and Φ (0-360 degree), altogether needs to test 264 points.The TRS test needs to get a test point every 30 degree θ (0-180 degree) and Φ (0-360 degree), needs altogether 60 points of test.Because test point is that equal angles is chosen, so its right and wrong on sphere are equally distributed.TRP, TRS need to carry out surface integral according to all test points and calculate.In integral operation, to being positioned at θ=0, two test points of θ=180, its sine value is zero, so these two points are not tested.

Total radiant power TRP index is the size of testing Devices to test (Device Under Test, DUT) actual emanations power.TRP is defined as the integration of the radiant power of different directions on whole radiation spheroid.So the computing formula of TRP is:

Wherein Ω is the corresponding angular zone entity of direction, and f is frequency, θ and

Represent orthogonal polarization, EIRP _θWith

Be the actual emission power rank corresponding to polarization, so TRP can be with following formula Equivalent Calculation:

N in formula and M are measured angular θ _nThe angle and

The sampling point number at angle.

In present international standard not yet method of testing and the test process to the radio-frequency (RF) index under multiaerial system stipulate.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of method of testing for the multiaerial system total radiant power and device, be used for to solve the technical problem that mimo system is measured the TRP of data flow, for achieving the above object, technical scheme of the present invention is achieved in that

The method of testing of total radiant power in a kind of multiaerial system comprises:

Steps A 1, execution initialization;

Steps A 2, total radiant power (TRP) value when measuring each data flow and opening separately;

Steps A 3, the total radiant power value when measuring all data flow and all opening;

The total radiant power value of each data flow that the total radiant power value when steps A 4, the total radiant power when opening separately according to each data flow and all data flow are all opened calculates all data flow when all opening.

Further, comprise 2 data flow in described method, steps A 2 is specially:

A21, turn-on data stream 1 are closed data flow 2, the total radiant power value TRP when the measurement user terminal sends data flow 1 separately ₁

A22, turn-on data stream 2 are closed data flow 1, the total radiant power TRP when the measurement user terminal sends data flow 2 separately ₂

Steps A 3 is specially: while turn-on data stream 1 and data flow 2, the total radiant power TRP when user terminal sends data flow 1 and data flow 2 simultaneously _T

The step of the total radiant power when further, measuring each data flow and open separately and the total radiant power value when measuring all data flow and all opening is:

Step B1, send the uplink power control order to user terminal continuously;

Step B2, when user terminal reaches maximum power, begin to send the data under the PN15 pattern;

Step B3, carry out access point testing on the sphere take described user terminal as the center of circle, go out corresponding total radiant power value by following formula Equivalent Calculation:

Wherein f is frequency, and θ represents perpendicular polarization,

Represent horizontal polarization, EIRP _θWith Be the actual emission power rank corresponding to polarization.

When further, calculating all data flow and all open, the mode of the total radiant power value of each data flow is:

${\mathrm{TRP}}_{\mathrm{Ti}}={\mathrm{TRP}}_T*\frac{{\mathrm{TRP}}_i}{{\mathrm{TRP}}_1+...+{\mathrm{TRP}}_i+...+{\mathrm{TRP}}_N}$

TRP wherein ₁To TRP _NTotal radiant power value when opening separately for each data flow, TRP _TTotal total radiant power value in the situation of all opening for all data flow, TRP _TiTotal radiant power value for i data flow when all data flow are all opened.

In the situation that only have two data transfer rates, when obtaining all data flow and all opening, the method for the total radiant power value of each data flow is:

${\mathrm{TRP}}_{T1}={\mathrm{TRP}}_T*\frac{{\mathrm{TRP}}_1}{{\mathrm{TRP}}_1+{\mathrm{TRP}}_2}$

${\mathrm{TRP}}_{T2}={\mathrm{TRP}}_T*\frac{{\mathrm{TRP}}_2}{{\mathrm{TRP}}_1+{\mathrm{TRP}}_2}$

Wherein, TRP _T1The total radiant power value of the 1st data flow when all opening for all data flow; TRP _T2The total radiant power value of the 2nd data flow when all opening for all data flow.

Based on said method, the present invention also proposes the testing apparatus of total radiant power in a kind of multiaerial system, comprising:

Initialization module is used for carrying out initialization operation;

Measurement module, the total radiant power (TRP) when be used for measuring each data flow and opening separately are worth and the total radiant power value when measuring all data flow and all opening;

Computing module, the total radiant power value of each data flow that the total radiant power value the when total radiant power when being used for opening separately according to each data flow that measurement module records and all data flow are all opened calculates all data flow when all opening.

Further, described measurement module is surveyed and is comprised pretreatment module, power computation module:

Pretreatment module is used for sending continuously the uplink power control order and makes user terminal reach maximum power, then sends the data under the PN15 pattern;

Power computation module is used for carrying out access point testing on the sphere take tested user terminal as the center of circle, go out corresponding total radiant power value by following formula Equivalent Calculation:

Wherein f is frequency, θ and

Represent orthogonal polarization, EIRP _θWith Be the actual emission power rank corresponding to polarization.

When further, described computing module calculates all data flow and all opens, the mode of the total radiant power value of each data flow is:

${\mathrm{TRP}}_{\mathrm{Ti}}={\mathrm{TRP}}_T*\frac{{\mathrm{TRP}}_i}{{\mathrm{TRP}}_1+...+{\mathrm{TRP}}_i+...+{\mathrm{TRP}}_N}$

TRP wherein ₁To TRP _NTotal radiant power value when opening separately for each data flow, TRP _TTotal total radiant power value in the situation of all opening for all data flow, TRP _TiTotal radiant power value for i data flow when all data flow are all opened.

The present invention can send or receive a plurality of data flow simultaneously, realized in the mimo system test to the TRP of a plurality of data flow.

Description of drawings

Fig. 1 is the flow chart that carries out multiple data stream TRP test implementation method according to the present invention;

Fig. 2 is the spheric coordinate system schematic diagram of setting up take tested radio communication product as initial point.

Embodiment

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein only is used for description and interpretation the present invention, is not intended to limit the present invention.

Embodiment 1:

Fig. 2 has provided the handling process of testing simultaneously 2 data flow TRP, and concrete steps are as follows:

Step 210: carry out the initialization before test, comprise power control algorithm is set, enters closed loop test pattern etc.

1) down physical channel power and relevant parameter are set;

Physical channel	Power
		CPICH	CPICH_Ec/DPCH_Ec＝7dB
P-CCPCH	P-CCPCH_Ec/DPCH_Ec＝5dB
		SCH	SCH_Ec/DPCH_Ec＝5dB
PICH	PICH_Ec/DPCH_Ec＝2dB
		DPCH	Test dependent power

2) UE electric power starting.

3) set up process according to ordinary call and carry out call setup, power control algorithm is set to power control algorithm 2 (Power Control Algorithm 2), and compact model is set to OFF.

4) UE enters closed loop test pattern 2 (loopback test mode 2), the beginning closed loop test.

Step 220: carry out test process, the total radiant power value when the total radiant power value when measuring each data flow and opening separately and all data flow are all opened;

Substep 221: data flow 1 is opened, and data flow 2 is closed, the total radiant power value TRP of test data flow 1 in the case ₁

1) send continuously up (Up) power control command to UE, increase the power level of UE.

2) when UE reaches maximum power, begin to send the data under the PN15 data pattern.

3) UE is positioned over appropriate location with respect to the brain model.

4) measure respectively EIRP _θWith θ and φ direction are got a little take 15 ° as step-length respectively, test at institute sampling point place.

5) record the EIRP that each is put _θWith After value, calculate TRP according to following formula ₁:

Substep 222: data flow 2 is opened, and data flow 1 is closed, the total radiant power value TRP of test data flow 2 in the case ₂

1) send continuously the Up power control command to UE.

2) when UE reaches maximum power, begin to send the PN15 data pattern.

3) UE is positioned over appropriate location with respect to the brain model.

4) measure respectively EIRP _θWith

θ and φ direction are got a little take 15 ° as step-length respectively, test at institute sampling point place.

5) record the EIRP that each is put _θWith

After value, calculate TRP according to following formula ₂:

Substep 223: data flow 1 is opened, and data flow 2 is also opened simultaneously, test in the case data flow 1 and total total radiant power value TRP of data flow 2 _T

1) send continuously the Up power control command to UE.

2) when UE reaches maximum power, begin to send the PN15 data pattern.

3) UE is positioned over appropriate location with respect to the brain model.

4) measure respectively EIRP _θWith

θ and φ direction are got a little take 15 ° as step-length respectively, test at institute sampling point place.

5) record the EIRP that each is put _θWith After value, calculate TRP according to following formula _T:

Step 230: the test data that obtains is processed the total radiant power value of individual traffic when the total radiant power value when the total radiant power value when opening separately according to each data flow and all data flow are all opened is calculated all data flow and all opened.

TRP ₁For data flow 1 is opened, the total radiant power value when data flow 2 is closed.

TRP ₂For data flow 2 is opened, the total radiant power value when data flow 1 is closed.

TRP _TBe the total radiant power values of two data flow when all sending.

Separately ${\mathrm{TRP}}_{T1}={\mathrm{TRP}}_T*\frac{{\mathrm{TRP}}_1}{{\mathrm{TRP}}_1+{\mathrm{TRP}}_2},$ TRP _T1Be that two data flow are all opened, the total radiant power value of the data flow 1 in situation about all sending.

Separately ${\mathrm{TRP}}_{T2}={\mathrm{TRP}}_T*\frac{{\mathrm{TRP}}_2}{{\mathrm{TRP}}_1+{\mathrm{TRP}}_2},$ TRP _T2Be that two data flow are all opened, the total radiant power value of the data flow 2 in situation about all sending.

Embodiment 2:

When data flow is N data flow, be in step 220 and step 230 it is that N data stream is processed with the difference of embodiment 1, the present embodiment is when testing, at first measure the TRP value that obtains each individual traffic, and then obtain total TRP value in the situation that all data flow are all opened; Suppose that the TRP value when each data flow is opened separately is respectively TRP ₁... TRP _N, in the situation that all data flow are all opened, total TRP value is TRP _T, the total radiant power value TRP of i data flow when all data flow are all opened _TiComputational methods as follows:

${\mathrm{TRP}}_{\mathrm{Ti}}={\mathrm{TRP}}_T*\frac{{\mathrm{TRP}}_i}{{\mathrm{TRP}}_1+...+{\mathrm{TRP}}_i+...+{\mathrm{TRP}}_N}$

Based on said method, the present invention also proposes the testing apparatus of total radiant power in multiaerial system, comprising: initialization module, measurement module, computing module.

Initialization module is used for carrying out initialization operation;

Total radiant power TRP value when measurement module be used for to be measured each data flow and opened separately and the total radiant power value when measuring all data flow and all opening; Measurement module further comprises pretreatment module and power computation module, and pretreatment module is used for sending continuously the uplink power control order makes user terminal reach maximum power, then sends the data under the PN15 pattern; Power computation module is used for carrying out access point testing on the sphere take tested user terminal as the center of circle, go out corresponding total radiant power value by following formula Equivalent Calculation:

Wherein f is frequency, θ and

Represent orthogonal polarization, EIRP _θWith

Be the actual emission power rank corresponding to polarization.

The total radiant power value of each data flow when the total radiant power value the when total radiant power when computing module is used for opening separately according to each data flow that measurement module records and all data flow are all opened calculates all data flow and all opens by following method:

${\mathrm{TRP}}_{\mathrm{Ti}}={\mathrm{TRP}}_T*\frac{{\mathrm{TRP}}_i}{{\mathrm{TRP}}_1+...+{\mathrm{TRP}}_i+...+{\mathrm{TRP}}_N}$

TRP wherein ₁To TRP _NTotal radiant power value when opening separately for each data flow, TRP _TTotal total radiant power value in the situation of all opening for all data flow, TRP _TiTotal radiant power value for i data flow when all data flow are all opened.

The above is only 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 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 (6)

1. the method for testing of total radiant power in a multiaerial system, is characterized in that, comprising:

A1, execution initialization;

A2, total radiant power (TRP) value when measuring each data flow and opening separately;

A3, the total radiant power value when measuring all data flow and all opening;

The total radiant power value of each data flow that the total radiant power value when A4, the total radiant power when opening separately according to each data flow and all data flow are all opened calculates all data flow when all opening, when all data flow of described calculating are all opened, the mode of the total radiant power value of each data flow is:

TRP wherein ₁To TRP _NTotal radiant power value when opening separately for each data flow, TRP _TTotal total radiant power value in the situation of all opening for all data flow, TRP _TiTotal radiant power value for i data flow when all data flow are all opened.

2. method according to claim 1, is characterized in that, comprises 2 data flow in described method, and steps A 2 is specially:

A21, turn-on data stream 1 are closed data flow 2, the total radiant power value TRP when the measurement user terminal sends data flow 1 separately ₁

A22, turn-on data stream 2 are closed data flow 1, the total radiant power TRP when the measurement user terminal sends data flow 2 separately ₂

Steps A 3 is specially: while turn-on data stream 1 and data flow 2, the total radiant power TRP when user terminal sends data flow 1 and data flow 2 simultaneously _T

3. method according to claim 1 and 2, is characterized in that, the step of the total radiant power when measuring each data flow and opening separately and the total radiant power value when measuring all data flow and all opening is:

B1, send the uplink power control order to user terminal continuously;

B2, when user terminal reaches maximum power, begin to send the data under the PN15 pattern;

B3, carry out access point testing on the sphere take described user terminal as the center of circle, go out corresponding total radiant power value by following formula Equivalent Calculation:

Wherein f is frequency, and θ represents perpendicular polarization,

Represent horizontal polarization, EIRP _θWith

Be the actual emission power rank corresponding to polarization, N and M are respectively measured angular θ _nThe angle and The sampling point number at angle.

4. method according to claim 2, is characterized in that, in steps A 4, when obtaining all data flow and all opening, the method for the total radiant power value of each data flow is:

Wherein, TRP _T1The total radiant power value of the 1st data flow when all opening for all data flow; TRP _T2The total radiant power value of the 2nd data flow when all opening for all data flow.

5. the testing apparatus of total radiant power in a multiaerial system, is characterized in that, comprising:

Initialization module is used for carrying out initialization operation;

Measurement module, the total radiant power (TRP) when be used for measuring each data flow and opening separately are worth and the total radiant power value when measuring all data flow and all opening;

Computing module, the total radiant power value of each data flow that the total radiant power value the when total radiant power when being used for opening separately according to each data flow that measurement module records and all data flow are all opened calculates all data flow when all opening, when all data flow of described calculating are all opened, the mode of the total radiant power value of each data flow is:

TRP wherein ₁To TRP _NTotal radiant power value when opening separately for each data flow, TRP _TTotal total radiant power value in the situation of all opening for all data flow, TRP _TiTotal radiant power value for i data flow when all data flow are all opened.

6. device according to claim 5, is characterized in that, measurement module is surveyed and comprised:

Pretreatment module is used for sending continuously the uplink power control order and makes user terminal reach maximum power, then sends the data under the PN15 pattern;

Power computation module is used for carrying out access point testing on the sphere take tested user terminal as the center of circle, go out corresponding total radiant power value by following formula Equivalent Calculation:

Wherein f is frequency, θ and Represent orthogonal polarization, EIRP _θWith

Be the actual emission power rank corresponding to polarization, N and M are respectively measured angular θ _nThe angle and

The sampling point number at angle.

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