CN105324955B

CN105324955B - A kind of Method for Phase Difference Measurement, device and system

Info

Publication number: CN105324955B
Application number: CN201380077711.2A
Authority: CN
Inventors: 毕晓艳; 戎璐; 郭文婷
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2013-10-31
Filing date: 2013-10-31
Publication date: 2018-08-14
Anticipated expiration: 2033-10-31
Also published as: WO2015062012A1; CN105324955A

Abstract

The embodiment of the invention discloses a kind of Method for Phase Difference Measurement, including：In the first time window receive the first RRU send the first test signal, and measure received in the first time window first test signal power or minimum amplitude when the first receiving time value；In the second time window receive the 2nd RRU send the second test signal, and measure received in second time window second test signal power or minimum amplitude when the second receiving time value；The phase difference between the first RRU and the 2nd RRU is calculated according to the preset phase rotary speed, time difference and time interval value.Correspondingly, the embodiment of the invention also discloses relevant device and system.The embodiment of the present invention can improve the phase difference precision of measurement, to meet the performance requirement of collaboration communication.

Description

A kind of Method for Phase Difference Measurement, device and system

Technical field

The present invention relates to the communications field more particularly to a kind of Method for Phase Difference Measurement, device and system.

Background technology

With the development of the communication technology, the communications field also requires messaging parameter higher and higher, wherein phase is in communication One important parameter.It is especially right in multipoint cooperative (Coordinated Multiple Points, CoMP) transmission technology Phase synchronizes very special requirement between Remote Radio Unit (Radio Remote Unit, RRU).And the phase between synchronous RRU It is the phase difference needed between acquisition RRU between position, and according to Phase synchronization between phase difference realization RRU.And between measuring RRU at present Phase difference mainly measure by the following method：

User equipment obtains the set of cooperation district, and the descending pilot frequency by measuring each cooperation district in the set is believed Number, with the corresponding channel vector of a transmission antenna of base station where the reception antenna of the user equipment and user equipment home cell On the basis of, then the corresponding channel arrow of a transmission antenna of base station where a reception antenna of the user equipment and a cooperation district Amount is compared, by estimating that operation determines phase difference of the cooperation district relative to the user equipment home cell.User equipment Again by the phase difference eated dishes without rice or wine to base station feedback cooperation district relative to home cell, to which base station is obtained according to the feedback information To the phase difference of the RRU in the RRU and home cell in cooperation district.

It is poor using interface-free resources feedback phase by then passing through user equipment in the above-described techniques, and it is anti-in practical applications It can be influenced by factors such as different air channel conditions, the quantization errors of feedback of eating dishes without rice or wine introducing when the phase difference of feedback.So The phase difference precision measured in above-mentioned technology is poor, cannot be satisfied the performance requirement of collaboration communication.

Invention content

An embodiment of the present invention provides a kind of Method for Phase Difference Measurement, device and system, can improve the phase difference essence of measurement Degree, to meet the performance requirement of collaboration communication.

In a first aspect, the embodiment of the present invention provides a kind of Method for Phase Difference Measurement, including：

The first test signal that the first RRU is sent is received in the first time window, and is measured in the first time window The first receiving time value when the power or minimum amplitude of first test signal received；Wherein, it described first surveys Power or constant amplitude of the trial signal when the first RRU sends first test signal, and the first test letter Number phase with preset phase rotary speed carry out phase place；

The second test signal that the 2nd RRU is sent is received in the second time window, and is measured in second time window The second receiving time value when the power or minimum amplitude of second test signal received；Wherein, it described second surveys Power or constant amplitude of the trial signal when the 2nd RRU sends second test signal, and the second test letter Number phase with the preset phase rotary speed carry out phase place；

According to the preset phase rotary speed, time difference and time interval value calculate the first RRU with it is described Phase difference between 2nd RRU；Wherein, the time difference be the first receiving time value and the second time reception value it Between difference, the time interval value indicates the time interval between the first time window and second time window.

It is described according to the preset phase rotary speed, time in the first possible realization method of first aspect Difference and time interval value calculate the phase difference between the first RRU and the 2nd RRU, including：

The preset phase rotary speed and the time difference are subjected to multiplying and obtain first phase value；

The preset phase rotary speed and the time interval value are subjected to multiplying and obtain second phase value, and will The second phase value is worth to third phase place value plus particular phases；

The first phase value is subtracted into phase difference that the third phase is worth to as the first RRU and described the Phase difference between two RRU.

With reference to first aspect, described according to the preset phase in second of possible realization method of first aspect After rotary speed, time difference and time interval value calculate the phase difference between the first RRU and the 2nd RRU, institute The method of stating further includes：

The first RRU is obtained according to the phase difference between the first RRU at multiple and different time points and the 2nd RRU With the phase jitter state between the 2nd RRU.

Any of the above-described realization method with reference to first aspect, it is described in the third possible realization method of first aspect Method further includes：

The first time window that length and/or position for configuring the first time window are sent to the first RRU is matched Confidence cease so that the first RRU according to the first time window configuration information configure the first time window length and/or Position；And/or

The second time window that length and/or position for configuring second time window are sent to the 2nd RRU is matched Confidence cease so that the 2nd RRU according to the second time window configuration information configure second time window length and/or Position.

Either second of the first possible realization method of first aspect or first aspect can with reference to first aspect Can realization method, in the 4th kind of possible realization method of first aspect, the method further includes：

The first rotation of the rotary step of the phase place for configuring first test signal is sent to the first RRU Turn step-length configuration information, so that the first RRU believes according to the first rotary step configuration information configuration first test Number rotary step；And/or

The second rotation of the rotary step of the phase place for configuring second test signal is sent to the 2nd RRU Turn step-length configuration information, so that the 2nd RRU believes according to the second rotary step configuration information configuration second test Number rotary step.

Second aspect, the embodiment of the present invention provide a kind of phase measurement device, including：First measuring unit, second measure Unit and computing unit, wherein：

First measuring unit, first for receiving the transmission of the first radio frequency remote unit RRU in the first time window Test signal, and measure received in the first time window first test signal power or minimum amplitude when The first receiving time value；Wherein, work(of first test signal when the first RRU sends first test signal Rate or constant amplitude, and the phase of first test signal carries out phase place with preset phase rotary speed；

Second measuring unit, the second test signal sent for receiving the 2nd RRU in the second time window, and survey Measure received in second time window second test signal power or minimum amplitude when second receive when Between be worth；Wherein, power or amplitude of second test signal when the 2nd RRU sends second test signal are permanent It is fixed, and the phase of second test signal carries out phase place with the preset phase rotary speed；

The computing unit, for being calculated according to the preset phase rotary speed, time difference and time interval value Phase difference between first RRU and the 2nd RRU；Wherein, the time difference is the first receiving time value and institute State the difference between the second time reception value, the time interval value indicate the first time window and second time window it Between time interval.

In the first possible realization method of second aspect, the computing unit is additionally operable to revolve the preset phase Rotary speed carries out multiplying with the time difference and obtains first phase value；And by the preset phase rotary speed and institute It states time interval value and carries out multiplying and obtain second phase value, and the second phase value is worth to the plus particular phases Three phase values；And using the first phase value subtract phase difference that the third phase is worth to as the first RRU with Phase difference between 2nd RRU.

In conjunction with second aspect, in second of possible realization method of second aspect, described device further includes：

Acquiring unit, for being obtained according to the phase difference between the first RRU at multiple and different time points and the 2nd RRU Take the phase jitter state between the first RRU and the 2nd RRU.

Second in conjunction with second aspect either the first possible realization method of second aspect or second aspect can Can realization method, in the third possible realization method of second aspect, described device further includes：

First dispensing unit, for sending length and/or position for configuring the first time window to the first RRU The first time window configuration information set, so that the first RRU configures described first according to the first time window configuration information The length of time window and/or position；And/or

Second dispensing unit, for sending length and/or position for configuring second time window to the 2nd RRU The the second time window configuration information set, so that the 2nd RRU configures described second according to the second time window configuration information The length of time window and/or position.

Second in conjunction with second aspect either the first possible realization method of second aspect or second aspect can Can realization method, in the 4th kind of possible realization method of second aspect, described device further includes：

Third dispensing unit, for sending the phase place for configuring first test signal to the first RRU Rotary step the first rotary step configuration information so that the first RRU is according to the first rotary step configuration information Configure the rotary step of first test signal；And/or

4th dispensing unit, for sending the phase place for configuring second test signal to the 2nd RRU Rotary step the second rotary step configuration information so that the 2nd RRU is according to the second rotary step configuration information Configure the rotary step of second test signal.

The third aspect, the embodiment of the present invention provide a kind of phase measuring system, including：First RRU, the 2nd RRU and measurement Device, wherein：

First RRU, for sending the first test signal to the measuring device in the first time window, wherein institute State power or constant amplitude of first test signal when the first RRU sends first test signal, and described The phase of one test signal carries out phase place with preset phase rotary speed；

The measuring device, the power for measuring first test signal received in the first time window Or amplitude it is minimum when the first receiving time value；

2nd RRU, for sending the second test signal to the measuring device in the second time window, wherein institute State power or constant amplitude of second test signal when the 2nd RRU sends second test signal, and described The phase of two test signals carries out phase place with the preset phase rotary speed；

The measuring device is additionally operable to measure the work(of second test signal received in second time window The second receiving time value when rate or minimum amplitude；

The measuring device is additionally operable to be calculated according to the preset phase rotary speed, time difference and time interval value Phase difference between first RRU and the 2nd RRU；Wherein, the time difference is the first receiving time value and institute State the difference between the second time reception value, the time interval value indicate the first time window and second time window it Between time interval.

Fourth aspect, the embodiment of the present invention provide a kind of phase measurement device, including：Receiver and memory, Yi Jifen The processor not connect with the receiver and memory, wherein the memory is for storing batch processing code, the place Reason device is for calling said program code to execute following operation：

Receive the first test letter of the first radio frequency remote unit RRU transmission in the first time window by the receiver Number, and measure received in the first time window first test signal power or minimum amplitude when first Receiving time value；Wherein, power of first test signal when the first RRU sends first test signal or Constant amplitude, and the phase of first test signal carries out phase place with preset phase rotary speed；

It receives the second test signal of the 2nd RRU transmissions in the second time window by the receiver, and measures in institute State the second receiving time value when the power or minimum amplitude of second test signal received in the second time window；Its In, power or constant amplitude of second test signal when the 2nd RRU sends second test signal, and institute It states the phase of the second test signal and phase place is carried out with the preset phase rotary speed；

In the first possible realization method of fourth aspect, what the processor executed revolves according to the preset phase Rotary speed, time difference and time interval value calculate the operation of the phase difference between the first RRU and the 2nd RRU, packet It includes：

In conjunction with fourth aspect, in the first possible realization method of fourth aspect, the processor is having executed It states and the first RRU and the 2nd RRU is calculated according to the preset phase rotary speed, time difference and time interval value Between phase difference operation after, be additionally operable to execute following operation：

Second in conjunction with fourth aspect either the first possible realization method of fourth aspect or fourth aspect can Can realization method, in the third possible realization method of fourth aspect, described device further includes transmitter, the processor It is additionally operable to execute following operation：

The length to the first RRU transmissions for configuring the first time window and/or position by the transmitter First time window configuration information so that the first RRU according to the first time window configuration information configuration described first when Between window length and/or position；And/or

The length to the 2nd RRU transmissions for configuring second time window and/or position by the transmitter The second time window configuration information so that the 2nd RRU according to the second time window configuration information configuration described second when Between window length and/or position.

Second in conjunction with fourth aspect either the first possible realization method of fourth aspect or fourth aspect can Can realization method, in the 4th kind of possible realization method of fourth aspect, described device further includes transmitter, the processor It is additionally operable to execute following operation：

The rotation of phase place by the transmitter to the first RRU transmissions for configuring first test signal Turn the first rotary step configuration information of step-length, so that the first RRU is configured according to the first rotary step configuration information The rotary step of first test signal；And/or

The rotation of phase place by the transmitter to the 2nd RRU transmissions for configuring second test signal Turn the second rotary step configuration information of step-length, so that the 2nd RRU is configured according to the second rotary step configuration information The rotary step of second test signal.

The embodiment of the present invention also provides a kind of computer read/write memory medium, and the computer read/write memory medium is deposited Computer program is contained, the computer program is for instructing relevant hardware, to complete the method described in fourth aspect.

In above-mentioned technical proposal, the first test signal that the first RRU is sent is received in the first time window, and measure in institute State the first receiving time value when the power or minimum amplitude of first test signal received in first time window； The second test signal that the 2nd RRU is sent is received in second time window, and measures the institute received in second time window State the second receiving time value when the power or minimum amplitude of the second test signal；According to the preset phase rotary speed, Time difference and time interval value calculate the phase difference between the first RRU and the 2nd RRU.Can directly it pass through in this way Measure the test signal that RRU is sent, to calculate the phase difference between RRU, compared with prior art in pass through user equipment using empty Mouth resource feedback phase is poor, and the embodiment of the present invention can improve the phase difference precision of measurement, to meet the performance need of collaboration communication It asks.

Description of the drawings

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with Obtain other attached drawings according to these attached drawings.

Fig. 1 is a kind of flow diagram of Method for Phase Difference Measurement provided in an embodiment of the present invention；

Fig. 2 is the flow diagram of another Method for Phase Difference Measurement provided in an embodiment of the present invention；

Fig. 3 is a kind of optional phase place schematic diagram provided in an embodiment of the present invention；

Fig. 4 is a kind of structural schematic diagram of phase measurement device provided in an embodiment of the present invention；

Fig. 5 is a kind of structural schematic diagram of phase measurement device provided in an embodiment of the present invention；

Fig. 6 is a kind of structural schematic diagram of phase measurement device provided in an embodiment of the present invention；

Fig. 7 is the structural schematic diagram of another phase measurement device provided in an embodiment of the present invention；

Fig. 8 is the structural schematic diagram of another phase measurement device provided in an embodiment of the present invention；

Fig. 9 is the structural schematic diagram of another phase measurement device provided in an embodiment of the present invention；

Figure 10 is the structural schematic diagram of another phase measurement device provided in an embodiment of the present invention；

Figure 11 is a kind of structural schematic diagram of phase measuring system provided in an embodiment of the present invention.

Specific implementation mode

Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other without creative efforts Embodiment shall fall within the protection scope of the present invention.

In embodiments of the present invention, the first RRU can be specifically the RRU that a certain base station includes, and the 2nd RRU can be another The RRU that base station includes, certainly, the first RRU and the 2nd RRU can be two RRU that the same base station includes.As the first RRU and When 2nd RRU belongs to different base stations, it is different that the phase difference between the first RRU and the 2nd RRU can be understood to the two Phase difference between base station.

Referring to FIG. 1, Fig. 1 is a kind of flow diagram of Method for Phase Difference Measurement provided in an embodiment of the present invention, such as Fig. 1 institutes Show, includes the following steps：

101, the first test signal of the first radio frequency remote unit RRU transmission is received in the first time window, and is measured The first receiving time value when the power or minimum amplitude of first test signal received in the first time window； Wherein, power or constant amplitude of first test signal when the first RRU sends first test signal, and The phase of first test signal carries out phase place with preset phase rotary speed.

Optionally, above-mentioned first test signal can be specifically the test signal of Time Continuous, for example, at above-mentioned first Between in window Time Continuous test signal；Or above-mentioned first test signal is the test signal of time discrete.

Optionally, the power or width for first test signal that above-mentioned measurement receives in the first time window The first receiving time value when spending minimum can be specifically that the work(of multiple first test signals is acquired in the first time window Either from this multiple performance number, either range value selects a minimum performance number or minimum one to range value to rate value again A range value, then the acquisition time of minimum performance number or range value will be acquired as above-mentioned first receiving time.Such as：On The length for stating first time window is 360 microseconds (us), phase place 360 of above-mentioned first test signal in the first time window Degree, i.e. preset phase rotary speed are that 1 degree is rotated per us.And above-mentioned acquisition time slot is 1us, then step 101 can acquire To the performance numbers of the first test signal of 360 outs of phase, either range value is selected from this 360 performance numbers or range value again Lowest power value or range value are selected out, to obtain above-mentioned first receiving time value.

It should be noted that the power and amplitude of above-mentioned first test signal can be two parameters arranged side by side, i.e. step When measuring the power of the first test signal in 101, then can one test signal of accident flow control amplitude, similarly, measure When going out the amplitude of the first test signal, so that it may with the power of one test signal of accident flow control.

Optionally, power of above-mentioned first test signal when the first RRU sends first test signal or Constant amplitude can be specifically, the power or amplitude of first test signal when the first test signal that the first RRU is got It is constant, such as：Either constant amplitude or the first RRU receive other set to the power for the first test signal that first RRU is generated Standby (such as：Other base stations) send the first test signal power or constant amplitude.It is not being sent out in the first test signal The power or constant amplitude of first test signal before sending.But in practice, the power of the first test signal or amplitude exist The process of transmission often is influenced to change by the first RRU characteristics or transmission network, such as：First RRU is being sent out Carrier wave leakage, the in this way power in first test signal of carrier wave leakage moment or amplitude meeting occur when sending the first test signal Reduction, i.e. step 101 can be relatively low in the power or amplitude of the reception to the first test signal.So as to be walked The power or amplitude of rapid 101 the first test signals received can be variations, such as：The phase of first test signal is not Meanwhile first test signal power or amplitude can be different.

Optionally, the phase of above-mentioned first test signal phase place is carried out with preset phase rotary speed specifically can be with It is that the phase of above-mentioned first test signal changes over time, for example, above-mentioned preset phase rotary speed is to rotate 1 per us Degree, then the phase of above-mentioned first test signal, which just often crosses 1us, rotates 1 degree.Certainly, there are a phases by above-mentioned first RRU itself Position, i.e., above-mentioned first test signal can carry out phase place by start-phase of the phase of the first RRU, you can to understand Phase for the first test signal delivery time is just the phase of the first RRU.

102, the second test signal that the 2nd RRU is sent is received in the second time window, and is measured in second time The second receiving time value when the power or minimum amplitude of second test signal received in window；Wherein, described Power or constant amplitude of two test signals when the 2nd RRU sends second test signal, and described second surveys The phase of trial signal carries out phase place with the preset phase rotary speed.

Optionally, the power of the second test signal of description and measurement of above-mentioned second test signal can be specifically reference Above to the description of the first test signal.Wherein, the second test signal can be also identical to above-mentioned first test signal, such as： Power or amplitude are equal, and the step-length of phase place is equal.Wherein, the step-length of phase place can refer to specifically in time window Test signal phase place angle (such as：The phase place step-length of first test signal can be in the first time window The angle of first test signal phase place).Certainly, the power of the second test signal or amplitude can also be and the first test Either amplitude is different or the phase of the step-length of the phase place of the second test signal and the first test signal the power of signal The step-length of position rotation is different.

103, according to the preset phase rotary speed, time difference and time interval value calculate the first RRU with Phase difference between 2nd RRU；Wherein, the time difference is that the first receiving time value is received with second time Difference between value, the time interval value indicate the time interval between the first time window and second time window.

Optionally, above-mentioned first time window and above-mentioned second time window can be specifically two there is no when time-interleaving Between window, i.e., there are above-mentioned time intervals between first time window and above-mentioned second time window.

Optionally, the phase difference between above-mentioned first RRU and the 2nd RRU can refer to specifically the first RRU phase with The difference of the phase of 2nd RRU.

Optionally, above-mentioned first RRU can be specifically to indicate one or more RRU, and above-mentioned 2nd RRU can be specifically Indicate one or more RRU, when above-mentioned first RRU indicates that multiple RRU or the 2nd RRU indicate multiple RRU, above-mentioned side Method can calculate the phase difference between at least three RRU.

Optionally, the above method specifically can be applied to any specific equipment that can receive the signal that multiple RRU are sent, i.e., The above method may be implemented in the equipment.Such as：Base station, Combined Treatment (Joint Processing, JP) equipment, server, base Station control and network core network element etc..

Referring to FIG. 2, Fig. 2 is the flow diagram of another Method for Phase Difference Measurement provided in an embodiment of the present invention, such as Fig. 2 It is shown, including：

201, the first test signal of the first radio frequency remote unit RRU transmission is received in the first time window, and is measured The first receiving time value when the power or minimum amplitude of first test signal received in the first time window； Wherein, power or constant amplitude of first test signal when the first RRU sends first test signal, and The phase of first test signal carries out phase place with preset phase rotary speed.

202, the second test signal that the 2nd RRU is sent is received in the second time window, and is measured in second time The second receiving time value when the power or minimum amplitude of second test signal received in window；Wherein, described Power or constant amplitude of two test signals when the 2nd RRU sends second test signal, and described second surveys The phase of trial signal carries out phase place with the preset phase rotary speed.

Optionally, above-mentioned the first test signal and the second test signal of reception of receiving can be connect by combiner Above-mentioned first test signal and the second test signal are received, can be specifically that combiner can be with above-mentioned first RRU and the 2nd RRU Connection.The above-mentioned above-mentioned first receiving time value of measurement can be specifically by measuring the first test letter after combiner is combined Number multiple time points power or range value, calculate above-mentioned first time value.Similarly, it calculates indirect when above-mentioned second Receipts value.

203, the preset phase rotary speed and the time difference are subjected to multiplying and obtain first phase value；Again The preset phase rotary speed and the time interval value are subjected to multiplying and obtain second phase value, and by described second Phase value is worth to third phase place value plus particular phases；And the first phase value is subtracted into the third phase and is worth to Phase difference as the phase difference between the first RRU and the 2nd RRU；Wherein, the time difference connects for described first Receive the difference between time value and the second time reception value, the time interval value indicate the first time window with it is described Time interval between second time window.

Optionally, above-mentioned particular phases value can specifically indicate that the first test signal carries out phase rotation in the first time window Turn rotated phase.For example, it is 2 π that the first test signal carries out the phase that phase place is rotated in the first time window, that Above-mentioned particular phases value is just 2 π, and it is 1 that the first test signal carries out the phase that phase place is rotated in the first time window π, then above-mentioned particular phases value is just 1 π.

It should be noted that the second test signal carries out the phase that phase place is rotated in the second time window to be It is equal to the first test signal and carries out the phase that phase place is rotated in the first time window, and the first survey can be not equal to Trial signal carries out the phase that phase place is rotated in the first time window.

Optionally, step 203 can be specifically calculated by following formula between the first RRU and the 2nd RRU Phase difference：

Δ θ=Δ tc+ θ₂₁

θ₂₁=-t₂₁·c-h

Wherein, Δ θ indicates that the phase difference between the first RRU and the 2nd RRU, Δ t indicate above-mentioned time difference, c Indicate above-mentioned preset phase rotary speed, t₂₁Indicate that above-mentioned time interval value, h indicate above-mentioned particular phases value.

Above-mentioned formula is verified below with reference to Fig. 3, wherein RRU1 (above-mentioned first RRU) is in the first time window The phase of RRU1 is θ₁, the first test signal of RRU1 phase cycling traversal (i.e. phase is rotated), be rotated in phase to The constant phase θ of carrier wave leakage_DCAt overturning, the power of the first test signal is a low ebb value.At RRU2 (above-mentioned 2nd RRU) In the second time window, the phase of RRU2 is θ₂, the phase cycling traversal of the second test signal of RRU2 (i.e. revolved by phase Turn), it is rotated in phase to the constant phase θ of carrier wave leakage_DCAt overturning, the power of the second test signal is a low ebb value. To obtain following formula

Can obtain the phase difference θ expression formulas between RRU1 and RRU2 by above-mentioned two formula is：

Δ θ=θ₁-θ₂=α₁-α₂

The formula shows that the phase difference between RRU1 and RRU2 was represented by the first test signal is rotated in phase to θ_DCPlace The phase of rotation is rotated in phase to θ with the second test signal_DCDifference, that is, α of the phase of place rotation₁-α₂.Due to the first test The power or amplitude of signal and the second test signal are constant, lane rotation preset phase value h (such as：H=2 π), phase rotation Rotary speed is c.Therefore above-mentioned time difference is equal to：

Δ t=(2 π-α₁)/c+t₂₁+α₂/c

T in above formula₂₁Constant, Δ t is above-mentioned time difference can obtain following formula by above formula：

α₂-α₁=Δ tc-t₂₁·c-2π

Enable θ₂₁=-t₂₁C-2 π, then, according to Δ θ=θ₁-θ₂=α₁-α₂And α₂-α₁=Δ tc-t₂₁C-2 π are obtained To following calculation formula：

Δ θ=Δ tc+ θ₂₁

Calculation formula used in step 203 is can be obtained by by above-mentioned verification.

Optionally, above-mentioned first test signal can be specifically periodicity sending, such as：First RRU is multiple first Time window periodically sends above-mentioned first test signal.Above-mentioned second test signal can also be specifically periodic transmission , such as：2nd RRU sends above-mentioned second test signal in multiple second time window periodically.

Optionally, the phase of the first RRU can shake in practical applications, i.e. the phase of the first RRU different time The phase of first RRU can change.Such as：The phase of first RRU is produced by the reason of the first RRU crystal oscillator clocks or hardware circuit Raw shake.The phase of 2nd RRU equally can also shake.The present embodiment can also be by measuring multiple and different time point institutes It states the phase difference between the first RRU and the 2nd RRU and obtains phase jitter state between the first RRU and the 2nd RRU.

I.e. after step 203, the method can also include：

I.e. above-mentioned steps 201,202 and 203 can execute repeatedly in different times, to obtain above-mentioned multiple and different times Phase difference between the first RRU and the 2nd RRU of point.Wherein, the phase between the first RRU and the 2nd RRU Dither state can refer to specifically the dither state of the phase difference between the first RRU and the 2nd RRU in different time points.It is trembled by this Dynamic state can more preferably adjust associated business that the first RRU sends with the 2nd RRU (such as：It is passed in CoMP transmission scene Defeated business) so that the Phase synchronization for the business that the first RRU and the 2nd RRU is sent.

Optionally, as shown in figure 4, the method can also include：

204, the first time of the length and/or position for configuring the first time window is sent to the first RRU Window configuration information, so that the first RRU configures the length of the first time window according to the first time window configuration information The position and/or；And/or

205, the second time of the length and/or position for configuring second time window is sent to the 2nd RRU Window configuration information, so that the 2nd RRU configures the length of second time window according to the second time window configuration information The position and/or.

Wherein, above-mentioned and/or indicate, step 204 and step 205 can one step of any executions or step 204 with Step 205 is carried out.

Wherein, the position of above-mentioned first time window can refer to specifically the opposite position of first time window and the second time window It sets, i.e. time interval between first time window and the second time window, the position of above-mentioned second time window can refer to specifically The relative position of two time windows and first time window.Since the phase difference between calculating the first RRU and the 2nd RRU is according to upper Time interval value calculating is stated, in calculating process when time interval value is smaller, computational accuracy is higher, in addition, when above-mentioned When the length of first time window and the second time window is longer, step 201 collects the performance number or amplitude of the first test signal Value may be more, and step 202 collects the performance number of the second test signal or range value may be more, obtains in this way Above-mentioned first receiving time value and the second receiving time value are more accurate, between calculated first RRU and the 2nd RRU The precision of phase difference is with regard to higher.It may be implemented by configuring the position of first time window and/or the second time window, that is, to configure in this way Time interval between first time window and the second time window can improve the essence of the phase difference between the first RRU and the 2nd RRU Degree.Wherein, above-mentioned steps 204 and step 205 can specifically execute before step 201, can also be step 203 it After execute, the present embodiment is not construed as limiting the execution time of step 204 and step 205.For example, after executing the step 203, use Family need adjust the first RRU and the 2nd RRU between phase difference precision, so that it may with by step 204 and/or step 205 with The precision of the phase difference between the first RRU and the 2nd RRU is turned up.Certainly, in the present embodiment, the length of above-mentioned first time window and Position can also be that the first RRU settings, the length of above-mentioned second time window and position can also be the 2nd RRU settings.

Optionally, as shown in figure 5, the method can also include：

206, the of the rotary step of phase place for configuring first test signal is sent to the first RRU One rotary step configuration information, so that the first RRU is surveyed according to the first rotary step configuration information configuration described first The rotary step of trial signal；And/or

207, the of the rotary step of phase place for configuring second test signal is sent to the 2nd RRU Two rotary step configuration informations, so that the 2nd RRU is surveyed according to the second rotary step configuration information configuration described second The rotary step of trial signal.

Wherein, above-mentioned and/or indicate, step 206 and step 207 can one step of any executions or step 206 with Step 207 is carried out.

Wherein, the rotary step of above-mentioned first test signal can refer to specifically the first test signal in above-mentioned first time The phase that position rotation is rotated is carried out in window.In addition, the rotary step of above-mentioned first test signal can be equal to it is above-mentioned specific Phase value.The rotary step of above-mentioned second test signal can refer to specifically the second test signal in above-mentioned second time window into Line position, which is set, rotates rotated phase, wherein the rotary step of above-mentioned second test signal can be equal to above-mentioned first test letter Number rotary step.Such as：The rotary step of above-mentioned first test signal more in short-term, and acquire the first test signal power or When person's amplitude times of collection is constant, then the phase intervals of the first test signal acquired with regard to small, measure in this way above-mentioned As soon as the precision of value is high when receiving, conversely, the precision for the first receiving time value measured is low.Second receiving time value It is such.And the phase difference between the first RRU and the 2nd RRU is calculated according to the first receiving time value and the second receiving time value 's.The rotation of the rotary step and/or above-mentioned second test signal by configuring above-mentioned first test signal may be implemented in this way Step-length can improve the precision of the phase difference between the first RRU and the 2nd RRU.Wherein, above-mentioned steps 206 and step 207 are specific It can be executed before step 201, can also be and execute after step 203, the present embodiment is to step 206 and step 207 execution time is not construed as limiting.For example, after executing the step 203, user needs between adjustment the first RRU and the 2nd RRU Phase difference precision, so that it may with by step 206 and/or step 207 the phase between the first RRU and the 2nd RRU is turned up The precision of difference.Certainly, in the present embodiment, the rotary step of above-mentioned first test signal can also be the first RRU settings, above-mentioned The rotary step of second test signal can also be the 2nd RRU settings.

It should be noted that embodiment shown in fig. 5 can be realized in conjunction with embodiment shown in Fig. 4.

In above-mentioned technical proposal, the basic introduction in the examples above embodiment of plurality of optional, and can Realize the phase difference precision for improving and measuring.

The following is an embodiment of the apparatus of the present invention, and apparatus of the present invention embodiment is for executing the method for the present invention embodiment one to two The method of realization is illustrated only and is not disclosed with the relevant part of the embodiment of the present invention, particular technique details for convenience of description , please refer to the embodiment of the present invention one and embodiment two.

Referring to FIG. 6, Fig. 6 is a kind of structural schematic diagram of phase measurement device provided in an embodiment of the present invention, such as Fig. 6 institutes Show, including：First measuring unit 61, the second measuring unit 62 and computing unit 63, wherein：

First measuring unit 61, first for receiving the transmission of the first radio frequency remote unit RRU in the first time window surveys Trial signal, and measure received in the first time window first test signal power or minimum amplitude when First receiving time value；Wherein, power of first test signal when the first RRU sends first test signal Or constant amplitude, and the phase of first test signal carries out phase place with preset phase rotary speed.

Optionally, the first measuring unit 61 can be specifically that multiple first test signals are acquired in the first time window Performance number either from this multiple performance number, either range value selects a minimum performance number or minimum to range value again A range value, then the acquisition time of minimum performance number or range value will be acquired as above-mentioned first receiving time.

Optionally, power of above-mentioned first test signal when the first RRU sends first test signal or Constant amplitude can be specifically, the power or amplitude of first test signal when the first test signal that the first RRU is got It is constant, such as：Either constant amplitude or the first RRU receive other set to the power for the first test signal that first RRU is generated Standby (such as：Other base stations) send the first test signal power or constant amplitude.It is not being sent out in the first test signal The power or constant amplitude of first test signal before sending.But in practice, the power of the first test signal or amplitude exist The process of transmission often is influenced to change by the first RRU characteristics or transmission network, such as：First RRU is being sent out Carrier wave leakage, the in this way power in first test signal of carrier wave leakage moment or amplitude meeting occur when sending the first test signal It reduces, i.e. the first measuring unit 61 can be relatively low in the power or amplitude of the reception to the first test signal.So as to Power or amplitude to obtain the first test signal that the first measuring unit 61 receives can be variations, such as：First When the phase difference of test signal, the power or amplitude of the first test signal can be different.

Second measuring unit 62, the second test signal sent for receiving the 2nd RRU in the second time window, and measure The second receiving time when the power or minimum amplitude of second test signal received in second time window Value；Wherein, power or amplitude of second test signal when the 2nd RRU sends second test signal are permanent It is fixed, and the phase of second test signal carries out phase place with the preset phase rotary speed.

Computing unit 63, for calculating institute according to the preset phase rotary speed, time difference and time interval value State the phase difference between the first RRU and the 2nd RRU；Wherein, the time difference be the first receiving time value with it is described Difference between second time reception value, the time interval value indicate between the first time window and second time window Time interval.

Referring to FIG. 7, Fig. 7 is a kind of structural schematic diagram of phase measurement device provided in an embodiment of the present invention, such as Fig. 7 institutes Show, including：First measuring unit 71, the second measuring unit 72 and computing unit 73, wherein：

First measuring unit 71, first for receiving the transmission of the first radio frequency remote unit RRU in the first time window surveys Trial signal, and measure received in the first time window first test signal power or minimum amplitude when First receiving time value；Wherein, power of first test signal when the first RRU sends first test signal Or constant amplitude, and the phase of first test signal carries out phase place with preset phase rotary speed.

Second measuring unit 72, the second test signal sent for receiving the 2nd RRU in the second time window, and measure The second receiving time when the power or minimum amplitude of second test signal received in second time window Value；Wherein, power or amplitude of second test signal when the 2nd RRU sends second test signal are permanent It is fixed, and the phase of second test signal carries out phase place with the preset phase rotary speed.

Computing unit 73 obtains for the preset phase rotary speed and the time difference to be carried out multiplying One phase value；And the preset phase rotary speed and the time interval value are subjected to multiplying and obtain second phase Value, and the second phase value is worth to third phase place value plus particular phases；And the first phase value is subtracted into institute Phase difference that third phase is worth to is stated as the phase difference between the first RRU and the 2nd RRU；Wherein, the time Difference of the difference between the first receiving time value and the second time reception value, described in the time interval value indicates Time interval between first time window and second time window.

It should be noted that the second test signal carries out the phase that phase place is rotated in the second time window to be It is equal to the first test signal and carries out the phase that phase place is rotated in the first time window, and the first survey can be not equal to Trial signal carries out the phase that phase place is rotated in the first time window

Optionally, computing unit 73 can be specifically calculated by following formula between the first RRU and the 2nd RRU Phase difference：

Δ θ=Δ tc+ θ₂₁

θ₂₁=-t₂₁·c-h

Optionally, described device can also include：

Acquiring unit (is not drawn into) in attached drawing, for the first RRU and described second according to multiple and different time points Phase difference between RRU obtains the phase jitter state between the first RRU and the 2nd RRU., the first RRU with it is described Phase jitter state between 2nd RRU can refer to specifically that phase difference between the first RRU and the 2nd RRU is trembled in different time points Dynamic state.By the dither state can more preferably adjust associated business that the first RRU sends with the 2nd RRU (such as： The business transmitted in CoMP transmission scene) so that the Phase synchronization for the business that the first RRU and the 2nd RRU is sent.

Optionally, described device can also include：

First dispensing unit 74, for the first RRU send length for configuring the first time window and/or The first time window configuration information of position, so that the first RRU is according to first time window configuration information configuration described the The length of one time window and/or position；And/or

Second dispensing unit 75, for the 2nd RRU send length for configuring second time window and/or Second time window configuration information of position, so that the 2nd RRU is according to the second time window configuration information configuration described the The length of two time windows and/or position.

The position by configuring first time window and/or the second time window may be implemented in this way, that is, configure first time window Time interval between the second time window can improve the precision of the phase difference between the first RRU and the 2nd RRU.

As described in Figure 8, described to include：

Third dispensing unit 76, for sending the phase rotation for configuring first test signal to the first RRU First rotary step configuration information of the rotary step turned, so that the first RRU matches confidence according to first rotary step Breath configures the rotary step of first test signal；And/or

4th dispensing unit 77, for sending the phase rotation for configuring second test signal to the 2nd RRU Second rotary step configuration information of the rotary step turned, so that the 2nd RRU matches confidence according to second rotary step Breath configures the rotary step of second test signal.

Rotary step by configuring above-mentioned first test signal and/or above-mentioned second test signal may be implemented in this way Rotary step can improve the precision of the phase difference between the first RRU and the 2nd RRU.

Referring to FIG. 9, Fig. 9 is the structural schematic diagram of another phase measurement device provided in an embodiment of the present invention, such as Fig. 9 It is shown, including：Receiver 91 and memory 92, and the processor 93 that is connect respectively with the receiver 91 and memory 92, Wherein, the memory 92 is for storing batch processing code, and the processor 93 is for calling said program code to execute such as Lower operation：

Receive the first test letter of the first radio frequency remote unit RRU transmission in the first time window by the receiver 91 Number, and measure received in the first time window first test signal power or minimum amplitude when first Receiving time value；Wherein, power of first test signal when the first RRU sends first test signal or Constant amplitude, and the phase of first test signal carries out phase place with preset phase rotary speed；

It receives the second test signal of the 2nd RRU transmissions in the second time window by the receiver 91, and measures The second receiving time value when the power or minimum amplitude of second test signal received in second time window； Wherein, power or constant amplitude of second test signal when the 2nd RRU sends second test signal, and The phase of second test signal carries out phase place with the preset phase rotary speed；

Optionally, processor 93 execute according to the preset phase rotary speed, time difference and time interval value meter The operation for calculating the phase difference between the first RRU and the 2nd RRU may include：

What processor 93 executed calculates described according to the preset phase rotary speed, time difference and time interval value The operation of phase difference between first RRU and the 2nd RRU may include：

The phase difference between the first RRU and the 2nd RRU is calculated by following formula：

Δ θ=Δ tc+ θ₂₁

θ₂₁=-t₂₁·c-h

Optionally, processor 93 executed it is described according to the preset phase rotary speed, time difference and between the time After the operation that value calculates the phase difference between the first RRU and the 2nd RRU, it can be also used for executing following behaviour Make：

Wherein, the phase jitter state between the first RRU and the 2nd RRU can refer to specifically in different time points The dither state of phase difference between first RRU and the 2nd RRU.The first RRU and second can be more preferably adjusted by the dither state RRU send associated business (such as：The business transmitted in CoMP transmission scene) so that the first RRU and the 2nd RRU hairs The Phase synchronization for the business sent.

Optionally, as shown in Figure 10, described device further includes transmitter 94, and the processor 93 can be also used for executing such as Lower operation：

The length to the first RRU transmissions for configuring the first time window and/or position by the transmitter 94 The first time window configuration information set, so that the first RRU configures described first according to the first time window configuration information The length of time window and/or position；And/or

The length to the 2nd RRU transmissions for configuring second time window and/or position by the transmitter 94 The the second time window configuration information set, so that the 2nd RRU configures described second according to the second time window configuration information The length of time window and/or position.

Referring to FIG. 10, described device further includes transmitter 94, the processor 93 is additionally operable to execute following operation：

The phase place for configuring first test signal is sent to the first RRU by the transmitter 94 First rotary step configuration information of rotary step, so that the first RRU matches according to the first rotary step configuration information Set the rotary step of first test signal；And/or

The phase place for configuring second test signal is sent to the 2nd RRU by the transmitter 94 Second rotary step configuration information of rotary step, so that the 2nd RRU matches according to the second rotary step configuration information Set the rotary step of second test signal.

The structural schematic diagram that 1, Figure 11 is a kind of phase measuring system provided in an embodiment of the present invention is please referred to Fig.1, is such as schemed Shown in 11, including：First RRU111, the 2nd RRU112 and measuring device 113, wherein：

First RRU111, for sending the first test signal to the measuring device 113 in the first time window, wherein Power or constant amplitude of first test signal when the first RRU sends first test signal, and it is described The phase of first test signal carries out phase place with preset phase rotary speed；

Measuring device 113, the power for measuring first test signal received in the first time window Or amplitude it is minimum when the first receiving time value；

2nd RRU112, for sending the second test signal to the measuring device in the second time window, wherein described Power or constant amplitude of second test signal when the 2nd RRU sends second test signal, and described second The phase of test signal carries out phase place with the preset phase rotary speed；

Measuring device 113 is additionally operable to measure the power of second test signal received in second time window Or amplitude it is minimum when the second receiving time value；

Measuring device 113 is additionally operable to be calculated according to the preset phase rotary speed, time difference and time interval value Phase difference between first RRU and the 2nd RRU；Wherein, the time difference is the first receiving time value and institute State the difference between the second time reception value, the time interval value indicate the first time window and second time window it Between time interval.

Optionally, above-mentioned measuring device 113 can be specifically any embodiment in Fig. 6-embodiments shown in Fig. 10 Phase measurement device.

In above-mentioned technical proposal, measuring device receives the first test signal of the first RRU transmissions in the first time window, and First when measuring the power or minimum amplitude of first test signal received in the first time window receives Time value；Measuring device receives the second test signal of the 2nd RRU transmissions in the second time window, and measures at described second Between receive in window second test signal power or minimum amplitude when the second receiving time value；Measuring device root It is calculated between the first RRU and the 2nd RRU according to the preset phase rotary speed, time difference and time interval value Phase difference.The test signal that can be directly sent in this way by measuring RRU compares existing skill to calculate the phase difference between RRU Poor using interface-free resources feedback phase by user equipment in art, the embodiment of the present invention can improve the phase difference precision of measurement, To meet the performance requirement of collaboration communication.

One of ordinary skill in the art will appreciate that realizing all or part of flow in above-described embodiment method, being can be with Relevant hardware is instructed to complete by computer program, the program can be stored in a computer read/write memory medium In, the program is when being executed, it may include such as the flow of the embodiment of above-mentioned each method.Wherein, the storage medium can be magnetic Dish, CD, read-only memory (Read-Only Memory, ROM) or random access memory (Random Access Memory, abbreviation RAM) etc..

The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.

Claims

1. a kind of Method for Phase Difference Measurement, which is characterized in that including：

The first test signal of the first radio frequency remote unit RRU transmission is received in the first time window, and is measured described first The first receiving time value when the power or minimum amplitude of first test signal received in time window；Wherein, institute State power or constant amplitude of first test signal when the first RRU sends first test signal, and described The phase of one test signal carries out phase place with preset phase rotary speed；

The second test signal that the 2nd RRU is sent is received in the second time window, and is measured and received in second time window The second receiving time value when the power or minimum amplitude of second test signal arrived；Wherein, the second test letter Power or constant amplitude number when the 2nd RRU sends second test signal, and second test signal Phase carries out phase place with the preset phase rotary speed；

The first RRU and described second is calculated according to the preset phase rotary speed, time difference and time interval value Phase difference between RRU；Wherein, the time difference is between the first receiving time value and the second time reception value Difference, the time interval value indicate the time interval between the first time window and second time window；

Wherein, it is described according to the preset phase rotary speed, time difference and time interval value calculate the first RRU with Phase difference between 2nd RRU, including：

The preset phase rotary speed and the time interval value are subjected to multiplying and obtain second phase value, and will be described Second phase value is worth to third phase place value plus particular phases；

The first phase value is subtracted into phase difference that the third phase is worth to as the first RRU and described second Phase difference between RRU；

Wherein, above-mentioned particular phases value indicates that the first test signal carries out the phase that phase place is rotated in the first time window Position.

2. the method as described in claim 1, which is characterized in that described according to the preset phase rotary speed, time difference And after time interval value calculates the phase difference between the first RRU and the 2nd RRU, the method further includes：

The first RRU and institute are obtained according to the phase difference between the first RRU at multiple and different time points and the 2nd RRU State the phase jitter state between the 2nd RRU.

3. the method as described in any one of claim 1-2, which is characterized in that the method further includes：

The first time window that the length and/or position for configuring the first time window are sent to the first RRU matches confidence Breath, so that the first RRU configures length and/or the position of the first time window according to the first time window configuration information It sets；And/or

The second time window that the length and/or position for configuring second time window are sent to the 2nd RRU matches confidence Breath, so that the 2nd RRU configures length and/or the position of second time window according to the second time window configuration information It sets.

4. the method as described in any one of claim 1-2, which is characterized in that the method further includes：

The first rotation step of the rotary step of the phase place for configuring first test signal is sent to the first RRU Long configuration information, so that the first RRU configures first test signal according to the first rotary step configuration information Rotary step；And/or

The second rotation step of the rotary step of the phase place for configuring second test signal is sent to the 2nd RRU Long configuration information, so that the 2nd RRU configures second test signal according to the second rotary step configuration information Rotary step.

5. a kind of phase measurement device, which is characterized in that including：First measuring unit, the second measuring unit and computing unit, In：

First measuring unit, the first test for receiving the transmission of the first radio frequency remote unit RRU in the first time window Signal, and the when measuring the power or minimum amplitude of first test signal received in the first time window One receiving time value；Wherein, power of first test signal when the first RRU sends first test signal or Person's constant amplitude, and the phase of first test signal carries out phase place with preset phase rotary speed；

Second measuring unit, the second test signal sent for receiving the 2nd RRU in the second time window, and measure The second receiving time value when the power or minimum amplitude of second test signal received in second time window； Wherein, power or constant amplitude of second test signal when the 2nd RRU sends second test signal, and The phase of second test signal carries out phase place with the preset phase rotary speed；

The computing unit, it is described for being calculated according to the preset phase rotary speed, time difference and time interval value Phase difference between first RRU and the 2nd RRU；Wherein, the time difference is the first receiving time value and described the Difference between two time reception values, the time interval value indicate between the first time window and second time window Time interval；

Wherein, the computing unit is additionally operable to obtain the preset phase rotary speed and time difference progress multiplying To first phase value；And the preset phase rotary speed is subjected to multiplying with the time interval value and obtains the second phase Place value, and the second phase value is worth to third phase place value plus particular phases；And the first phase value is subtracted The phase difference that the third phase is worth to is as the phase difference between the first RRU and the 2nd RRU；

6. device as claimed in claim 5, which is characterized in that described device further includes：

Acquiring unit, for obtaining institute according to the phase difference between the first RRU at multiple and different time points and the 2nd RRU State the phase jitter state between the first RRU and the 2nd RRU.

7. the device as described in any one of claim 5-6, which is characterized in that described device further includes：

First dispensing unit, for sending length for configuring the first time window and/or position to the first RRU First time window configuration information, so that the first RRU configures the first time according to the first time window configuration information The length of window and/or position；And/or

Second dispensing unit, for sending length for configuring second time window and/or position to the 2nd RRU Second time window configuration information, so that the 2nd RRU configures second time according to the second time window configuration information The length of window and/or position.

8. the device as described in any one of claim 5-6, which is characterized in that described device further includes：

Third dispensing unit, the rotation for sending the phase place for configuring first test signal to the first RRU Turn the first rotary step configuration information of step-length, so that the first RRU is configured according to the first rotary step configuration information The rotary step of first test signal；And/or

4th dispensing unit, the rotation for sending the phase place for configuring second test signal to the 2nd RRU Turn the second rotary step configuration information of step-length, so that the 2nd RRU is configured according to the second rotary step configuration information The rotary step of second test signal.

9. a kind of phase measuring system, which is characterized in that including：First RRU, the 2nd RRU and measuring device, wherein：

First RRU, for sending the first test signal to the measuring device in the first time window, wherein described the Power or constant amplitude of one test signal when the first RRU sends first test signal, and described first surveys The phase of trial signal carries out phase place with preset phase rotary speed；

The measuring device, power for measuring first test signal received in the first time window or The first receiving time value when amplitude is minimum；

2nd RRU, for sending the second test signal to the measuring device in the second time window, wherein described the Power or constant amplitude of two test signals when the 2nd RRU sends second test signal, and described second surveys The phase of trial signal carries out phase place with the preset phase rotary speed；

The measuring device be additionally operable to measure the power of second test signal received in second time window or The second receiving time value when person's amplitude is minimum；

The measuring device is additionally operable to be calculated according to the preset phase rotary speed, time difference and time interval value described Phase difference between first RRU and the 2nd RRU；Wherein, the time difference is the first receiving time value and described the Difference between two time reception values, the time interval value indicate between the first time window and second time window Time interval；

Wherein, according to the preset phase rotary speed, time difference and time interval value calculate the first RRU with it is described Phase difference between 2nd RRU, including：

10. a kind of phase measurement device, which is characterized in that including：Receiver and memory, and respectively with the receiver and The processor of memory connection, wherein for the memory for storing batch processing code, the processor is described for calling Program code executes following operation：

Receive the first test signal of the first radio frequency remote unit RRU transmission in the first time window by the receiver, and First when measuring the power or minimum amplitude of first test signal received in the first time window receives Time value；Wherein, power or amplitude of first test signal when the first RRU sends first test signal It is constant, and the phase of first test signal carries out phase place with preset phase rotary speed；

It receives the second test signal of the 2nd RRU transmissions in the second time window by the receiver, and measures described the The second receiving time value when the power or minimum amplitude of second test signal received in two time windows；Wherein, Power or constant amplitude of second test signal when the 2nd RRU sends second test signal, and it is described The phase of second test signal carries out phase place with the preset phase rotary speed；

Wherein, what the processor executed calculates according to the preset phase rotary speed, time difference and time interval value The operation of phase difference between first RRU and the 2nd RRU, including：

11. device as claimed in claim 10, which is characterized in that the processor executed it is described according to the default phase Position rotary speed, time difference and time interval value calculate the operation of the phase difference between the first RRU and the 2nd RRU Later, it is additionally operable to execute following operation：

12. the device as described in any one of claim 10-11, which is characterized in that described device further includes transmitter, described Processor is additionally operable to execute following operation：

The of length for configuring the first time window and/or position is sent to the first RRU by the transmitter One time window configuration information, so that the first RRU configures the first time window according to the first time window configuration information Length and/or position；And/or

The of length for configuring second time window and/or position is sent to the 2nd RRU by the transmitter Two time window configuration informations, so that the 2nd RRU configures second time window according to the second time window configuration information Length and/or position.

13. the device as described in any one of claim 10-11, which is characterized in that described device further includes transmitter, described Processor is additionally operable to execute following operation：

The rotation for sending the phase place for configuring first test signal to the first RRU by the transmitter walks The first long rotary step configuration information, so that the first RRU is according to described in the first rotary step configuration information configuration The rotary step of first test signal；And/or

The rotation for sending the phase place for configuring second test signal to the 2nd RRU by the transmitter walks The second long rotary step configuration information, so that the 2nd RRU is according to described in the second rotary step configuration information configuration The rotary step of second test signal.

14. a kind of computer read/write memory medium, which is characterized in that the computer read/write memory medium is stored with calculating Machine program, the computer program is for instructing relevant hardware, to complete the method described in Claims 1-4 any one.