CN110299950A

CN110299950A - A kind of radio-frequency channel bearing calibration and device

Info

Publication number: CN110299950A
Application number: CN201810242062.1A
Authority: CN
Inventors: 颜林江; 陈子福
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2018-03-22
Filing date: 2018-03-22
Publication date: 2019-10-01
Anticipated expiration: 2038-03-22
Also published as: CN110299950B

Abstract

The embodiment of the invention discloses a kind of radio-frequency channel bearing calibrations.First correction sequence is transmitted respectively by each radio-frequency channel in the first communication connection, obtains corresponding second correction sequence in each radio-frequency channel received after transmission every time；According to first correction sequence and second correction sequence, the signal characteristic parameter difference of each radio-frequency channel is determined using default computation rule；According to the signal characteristic parameter difference, each radio-frequency channel is compensated.The embodiment of the invention also discloses device, storage medium and the information processing units of a kind of correction of radio-frequency channel.

Description

A kind of radio-frequency channel bearing calibration and device

Technical field

The present invention relates to digital communication technology more particularly to a kind of radio-frequency channel bearing calibration and devices.

Background technique

The long term evolution (LTE, Long Term Evolution) of forth generation (4G, 4th Generation) mobile communication Network introduces the concept of business beam, pre- five generation (Pre5G, Pre 5th Generation) and the 5th generation (5G, 5th Generation) mobile communication wireless network introduces extensive antenna array technology, extensive multiple input and output (Massive MIMO, Multiple-Input Multiple-Output) and Beamforming (wave beam forming) technology become mainstream, more industry Wave beam space division of being engaged in becomes normality, but how to carry out multi-user's space division test and just become problem.It under normal conditions, is true Wireless outfield is tested, but this Testability design is poor, and test result is easy to be interfered by outfield, and test repeatability is poor, Will lead to entire test can not standardize.

Currently, multiple test instrumentation producers also propose to simulate multiple users (UE, User by software algorithm intentionally Equipment space division scene), this method can face a problem, it may be assumed that the radio-frequency channel of equipment under test, test instrumentation Radio-frequency channel be all respectively correct, once equipment under test is connected with test instrumentation by RF cable, to a certain extent without The passage consistency of method guarantee amplitude and phase.But the angle of testing standard is realized from test instrumentation, it is ensured that instrument is surveyed Amplitude and phase of each radio-frequency channel in examination face in entire JA(junction ambient) it is consistent, be just able to achieve accurately wave beam control and base In the wireless test environment of wave beam.

Therefore, the consistency of the amplitude and phase of equipment under test and test instrumentation in entire JA(junction ambient) how is realized, Ensure testing reliability, is a problem to be solved.

Summary of the invention

In view of this, being able to achieve tested set an embodiment of the present invention is intended to provide a kind of radio-frequency channel bearing calibration and device Standby and amplitude and phase of the test instrumentation in entire JA(junction ambient) consistency, it is ensured that testing reliability.

In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:

The embodiment of the invention provides a kind of radio-frequency channel bearing calibrations, which comprises

First correction sequence is transmitted respectively by each radio-frequency channel in the first communication connection, after obtaining transmission every time Corresponding second correction sequence in each radio-frequency channel received；

According to first correction sequence and second correction sequence, each radio-frequency channel is determined using default computation rule Signal characteristic parameter difference；

According to the signal characteristic parameter difference, each radio-frequency channel is compensated.

In above scheme, the signal characteristic parameter difference that each radio-frequency channel is determined using default computation rule, comprising:

According to the second correction sequence that each radio-frequency channel receives in preset times transmission, each radio-frequency channel is calculated separately The arithmetic average of corresponding second correction sequence；

According to first correction sequence and the arithmetic average, determine that the signal characteristic parameter of each radio-frequency channel is poor Value.

In above scheme, the signal characteristic parameter difference, comprising: difference in magnitude, and/or phase difference, and/or delay inequality It is different.

In above scheme, the method also includes:

According to the signal characteristic parameter difference of each radio-frequency channel, the offset of each radio-frequency channel is determined；

By the second communication connection, the signal characteristic parameter difference of interaction each radio-frequency channel, and/or each radio frequency The offset in channel；

According to the signal characteristic parameter difference and/or offset, each radio-frequency channel is compensated.

In above scheme, the method also includes:

Second communication connection is also used to the interaction of radio-frequency channel correction interaction message；

Radio-frequency channel correction interaction message includes at least one of: first correction sequence, default time described Number, calibration cycle.

In above scheme, first communication connection is that mobile communication connects；

Each radio-frequency channel is RF cable connection.

In above scheme, uplink (UL, Up in the data frame of mobile communication connection is arranged in first correction sequence Link) between downlink (DL, Down Link) gap (GP, Gap) middle position, by each in first communication connection It is transmitted radio-frequency channel.

The embodiment of the invention also provides a kind of radio-frequency channel means for correcting, described device includes: to obtain module, calculate mould Block and compensating module；Wherein,

The acquisition module, for passing the first correction sequence respectively by each radio-frequency channel in the first communication connection It is defeated, obtain corresponding second correction sequence in each radio-frequency channel received after transmission every time；

The computing module is used for according to first correction sequence and second correction sequence, using default calculating Rule determines the signal characteristic parameter difference of each radio-frequency channel；

The compensating module, for being compensated to each radio-frequency channel according to the signal characteristic parameter difference.

In above scheme, the computing module includes regular execution unit, and the rule execution unit is specifically used for:

In above scheme, the compensating module is also used to:

In above scheme, second communication connection is also used to the interaction of radio-frequency channel correction interaction message；

Each radio-frequency channel is RF cable connection.

In above scheme, first correction sequence is arranged in the data frame of the mobile communication connection between UL and DL The middle position of GP is transmitted by each radio-frequency channel in first communication connection.

The embodiment of the invention also provides a kind of storage mediums, are stored thereon with executable program, the executable program The step of any one described radio-frequency channel correction in above scheme is realized when being executed by processor.

Radio-frequency channel bearing calibration and device provided by the embodiment of the present invention, by the first correction sequence by the first communication Each radio-frequency channel is transmitted respectively in connection, obtains corresponding second school in each radio-frequency channel received after transmission every time Positive sequence；According to first correction sequence and second correction sequence, each radio-frequency channel is determined using default computation rule Signal characteristic parameter difference；According to the signal characteristic parameter difference, each radio-frequency channel is compensated.In this way, pass through by Measurement equipment and test instrumentation carry out the correction of each radio-frequency channel using practical or simulation JA(junction ambient), thus realize equipment under test and The consistency of amplitude and phase of the test instrumentation in entire JA(junction ambient), it is ensured that testing reliability.

Detailed description of the invention

Fig. 1 is the flow diagram of radio-frequency channel of embodiment of the present invention bearing calibration；

Fig. 2 is each radio-frequency channel attachment structure schematic diagram of the embodiment of the present invention；

Fig. 3 is the communication connection of the embodiment of the present invention first and the second communication connection schematic diagram；

Fig. 4 is the first correction sequence of embodiment of the present invention position view；

Fig. 5 is the first width phase compensating form workflow schematic diagram of the embodiment of the present invention；

Fig. 6 is second of width phase compensating form workflow schematic diagram of the embodiment of the present invention

Fig. 7 is the third width phase compensating form workflow schematic diagram of the embodiment of the present invention

Fig. 8 is the 4th kind of width phase compensating form workflow schematic diagram of the embodiment of the present invention

Fig. 9 is the system-level correcting process schematic diagram of the embodiment of the present invention；

Figure 10 is downlink radio frequency of embodiment of the present invention channel correcting flow diagram；

Figure 11 is upstream radio-frequency of embodiment of the present invention channel correcting flow diagram；

Figure 12 is the first abnormality processing flow diagram of the embodiment of the present invention；

Figure 13 is second of abnormality processing flow diagram of the embodiment of the present invention；

Figure 14 is radio-frequency channel of embodiment of the present invention means for correcting composed structure schematic diagram.

Specific embodiment

In the embodiment of the present invention, the first correction sequence is passed respectively by each radio-frequency channel in the first communication connection It is defeated, obtain corresponding second correction sequence in each radio-frequency channel received after transmission every time；According to the first correction sequence Column and second correction sequence, the signal characteristic parameter difference of each radio-frequency channel is determined using default computation rule；According to institute Signal characteristic parameter difference is stated, each radio-frequency channel is compensated.

Radio-frequency channel bearing calibration provided in an embodiment of the present invention, as shown in Figure 1, which comprises

Step 101: the first correction sequence being transmitted respectively by each radio-frequency channel in the first communication connection, is obtained every Corresponding second correction sequence in each radio-frequency channel received after secondary transmission；

Here, the active antenna element (AAU, Active Antenna Unit) that can be for carrying out the first communication connection is set Standby and test instrumentation, first correction sequence can be issued from AAU equipment or be issued by test instrumentation, when AAU equipment When issuing the first correction sequence, it is believed that be to carry out downlink correction, at this point, test instrumentation in the first communication connection by respectively penetrating Corresponding second correction sequence in each radio-frequency channel is received after frequency channel transfer；When test instrumentation issues the first correction sequence, It may be considered and carry out uplink correction, at this point, receiving each radio frequency after each radio-frequency channel transmission in the communication connection of AAU equipment first Corresponding second correction sequence in channel；Here, true according to corresponding second correction sequence of the first correction sequence and each radio-frequency channel The signal characteristic parameter difference of fixed each radio-frequency channel can carry out in AAU equipment, can also carry out in test instrumentation；It is described First communication connection can be the connection of the mobile communication such as 4G, Pre5G or 5G；Here, the test instrumentation can be vector signal Analyzer etc. is used to measure the instrument of radiofrequency signal.Wherein, first correction sequence and the second correction sequence embody respectively Be same correction sequence before transmission with the avatar after transmission.

Further, in order to reduce the shadows of some AAU equipment or test instrumentation itself unstable factor and environmental factor It rings, can be transmitted several times；The number of the transmission can be preset, and the preset times can be according to AAU equipment, tester The actual conditions of table and ambient enviroment setting, can only transmission primaries and also transmit repeatedly；

Specifically, the AAU equipment can be the AAU equipment of the mobile communication technologies such as 4G, Pre5G or 5G；Described first Communication connection can be the connection established using mobile communication technologies such as 4G, Pre5G or 5G；AAU equipment has generally comprised multiple Radio-frequency channel, such as 32 radio-frequency channels, 64 radio-frequency channels and 128 radio-frequency channels；Each radio-frequency channel together constitutes One communication connection；

Connect as shown in Fig. 2, each radio-frequency channel of AAU equipment and each radio-frequency channel of the test instrumentation can be corresponded It connects, in this way, the first correction sequence that AAU equipment is sent by each radio-frequency channel is all connect by each corresponding radio-frequency channel of test instrumentation It receives；The first correction sequence that test instrumentation is sent by each radio-frequency channel is all received by each corresponding radio-frequency channel of AAU equipment.

Further, each radio-frequency channel of AAU equipment is connect with each radio-frequency channel of the test instrumentation using RF cable； In this way, influence of the ambient enviroment to the first communication connection can be minimized.

Step 102: according to first correction sequence and second correction sequence, being determined using default computation rule each The signal characteristic parameter difference of radio-frequency channel；

Here, the letter of each radio-frequency channel is determined according to corresponding second correction sequence of the first correction sequence and each radio-frequency channel Number characteristic parameter difference can carry out in AAU equipment, can also carry out in test instrumentation；Such as:, can be with when downlink test The calculating of signal characteristic parameter difference is carried out by test instrumentation；When the test of upper every trade, signal characteristic can be carried out by AAU equipment The calculating of parameter difference；When the signal characteristic parameter difference is that signal transmits in first communication connection, signal is sent And receive the difference in magnitude, and/or phase difference, and/or delay variation etc. between signal；Here it is possible to difference in magnitude and phase difference Referred to as width differs；

I.e. the second school of the received sequence of sequence i.e. the first correction sequence and receiving end sent according to radio-frequency channel transmitting terminal Positive sequence determines that the signal characteristic parameter difference of radio-frequency channel can be calculated using conventionally calculation mode；It here can be using such as Lower method is realized:

Here, the first correction sequence and the second correction sequence can choose ZC sequence (Zadoff-Chu Sequence), use R (n),Expression.Wherein,Indicate sequence length；For example, in embodiment, Pre5G system may be selected Length be 512,5G system can choose length be 1024.Width is differed and is calculated, it, can be with since system is that RF cable is direct-connected Channel estimation is carried out using the channel model that single-shot list is received, obtains the amplitude deviation and phase deviation in each channel；Here have two A processing method, conventional method, which is other channels, fixes channel according to some and does opposite difference in magnitude and phase difference, or because It is that cable is direct-connected, influencing each other for interchannel is smaller, and the absolute difference in magnitude and phase in each channel can be obtained by equalization algorithm Potential difference；

The width difference in respective channel is calculated in this implementation according to LS channel estimation method.Its principle such as expression formula (1):

Y_p=HX_p+W_p (1)

Wherein, H is channel response, and Xp is known correction sequence, i.e. the first correction sequence, Yp is the correction sequence received Column, i.e. the second correction sequence, Wp are the noise in corresponding subchannel.

The available corresponding H value of LS channel estimation can be indicated with expression formula (2):

Correction needs to continuously transmit n times correction sequence every time, can finally obtain an average H value, with channel i, sub- load Channel response value on wave k can be indicated with expression formula (3):

Wherein, h_i,kIndicate channel impulse response, α_i,kIndicate amplitude variation,Amplitude variation, in this way, available The corresponding difference in magnitude in each channel and phase difference；

In being transmitted several times, a radio-frequency channel will receive multiple second correction sequences, and the preset rules are used for basis Multiple second correction sequences determine a reference value, determine that radio frequency is logical by the reference value and first correction sequence The signal characteristic parameter difference in road；Such as multiple second correction sequences are weighted and averaged, arithmetic mean, give up minimum or highest Value etc. calculates.

Further, the default computation rule includes: to be received in preset times transmission according to each radio-frequency channel Second correction sequence calculates separately the arithmetic average of corresponding second correction sequence in each radio-frequency channel；According to first school Positive sequence and the arithmetic average determine the signal characteristic parameter difference of each radio-frequency channel；

Specifically, first correction sequence more than once can be sent from the transmitting terminal of each radio-frequency channel, will exist respectively The receiving end of each radio-frequency channel receives second correction sequence more than once, one be respectively received for each radio-frequency channel A the second above correction sequence does arithmetic mean, further according to the second correction after the corresponding arithmetic mean in each radio-frequency channel Sequence determines signal characteristic parameter difference with the first correction sequence；

Further, the method can also include: and be determined according to the signal characteristic parameter difference of each radio-frequency channel The offset of each radio-frequency channel；By the second communication connection, the signal characteristic parameter difference of interactive each radio-frequency channel, And/or the offset of each radio-frequency channel；According to the signal characteristic parameter difference and/or offset, to each radio-frequency channel It compensates；

As shown in figure 3, here, between AAU equipment and test instrumentation other than the first communication connection to be corrected, also setting up There is the second communication connection, for interacting the signal characteristic parameter difference of each radio-frequency channel；In this way, being obtained in AAU equipment end Each radio-frequency channel signal characteristic parameter difference can by first communication connection be transferred to test instrumentation end, in test instrumentation AAU equipment end can be transferred to by the first communication connection by holding the signal characteristic parameter difference of each radio-frequency channel obtained；Make The signal characteristic parameter difference of downlink can have AAU equipment and test instrumentation, and either one is compensated；Second communication connection It can be the modes such as Ethernet connection, serial ports connection or WLAN connection.

Further, second communication connection is also used to the interaction of radio-frequency channel correction interaction message；The radio frequency is logical Channel correction interaction message includes at least one of: first correction sequence, preset times, calibration cycle.The AAU equipment Interaction message is corrected according to the radio-frequency channel with test instrumentation and carries out radio-frequency channel correction；

Specifically, in practical application, the radio-frequency channel correction interaction message for passing through the second communication connection interaction can be with Based on transmission control protocol (TCP, Transmission Control Protocol), User Datagram Protocol (UDP, User Datagram Protocol) or Reliable User Datagram Protocol (RUDP:Reliable User Datagram Protocol) Equal protocol modes.Here, in TCP mode as an example, and default port has been selected, such as 15158, the radio-frequency channel correction being related to is handed over Mutual message and process can be as shown in table 1；

Table 1

RF Calibration Config Request message, that is, radio-frequency channel calibration function configuration request message, this disappears Configuration Type of the breath comprising correction is then defaulted about between tested AAU equipment and test instrumentation if it is default (Default) Fixed, if it is specified (Specidied), then need that correction sequence, correction sequence is specified to correct continuous hair every time in message The position of the sequence number, correction sequence transmission that send and calibration cycle.Significant field in the message can be as shown in table 2；

Table 2

It is to be appreciated that for radio-frequency channel correction sequence, i.e. the first correction sequence sets radio-frequency channel correction sequence class This field of type may be selected Default, that is, Fault Sequence and need to correct by radio-frequency channel if being selected as Specified This field of sequence specifies actual first correction sequence (i.e. m-sequence).And " whether subcarrier in frequency domain level compensation " field, one As in the case of our default choices " Yes ", i.e., compensated according to subcarrier in frequency domain rank, certain field allows only to carry out time domain Width phase value complement repay；

Instruction is initiated in RF Calibration Config Required message, that is, radio-frequency channel calibration function configuration, this disappears Breath can indicate that radio-frequency channel calibration function configuring request process is initiated in opposite end.The message can also be carried without field Actual calibration function configuration parameter is got off, it is desirable to which opposite end can initiate calibration function configuring request by this parameter.In the message Significant field can be as shown in table 3；

Table 3

The message compares RF Calibration Config Request message, essentially consists in whether parameter " carries expectation Configuration parameter ", if the parameter is set to " No ", do not need to carry other parameters again, if the parameter is set to " Yes ", It needs to carry all kinds of parameters associated with RF Calibration Config Request, i.e. local terminal needs opposite end according to this It covers configuration parameter and initiates system-level radio-frequency channel correction.The message is primarily to realize that the correction of uplink and downlink radio-frequency channel is ok It is configured and is started in the same equipment；

RF Calibration Config Response message, that is, radio-frequency channel calibration function configuration response message, this disappears Breath can design it is fairly simple, i.e., responded by a Config Result field configuration successful or response configuration lose It loses.Config Result field can be as shown in table 4；

Table 4

RF Calibration Measurement Report message, that is, radio-frequency channel corrects measurement report, and this report needs It then to need to include each radio-frequency channel if it is frequency domain compensation comprising amplitude deviation, the phase deviation of each radio-frequency channel The difference in magnitude and phase difference value of each subcarrier.Significant field in the message can be as shown in table 5；

Table 5

Wherein " whether measurement end compensates " shows that radio-frequency channel compensation is directly to exist if field selection " Yes " Measurement end compensates, and no longer needs to a width phase difference and brings opposite equip..If the field is " No ", needs to carry and penetrate The width phase difference of frequency channel correcting measurement is compensated to opposite equip. by opposite equip..The measurement report of radio-frequency channel correction The field value of " whether measurement end compensates " that carries is " Yes ", that is, informs tested AAU equipment, this downlink radio frequency channel Compensation directly realize that AAU equipment tested in this way is without considering further that compensation on measurement end test instrumentation.Radio-frequency channel correction The field value of " whether measurement end compensates " that measurement report carries is " No ", then it is logical must to carry each radio frequency for the measurement report Width phase difference on road is realized by opposite end measuring instrumentss the compensation in upstream radio-frequency channel to opposite end；

RF Calibration Stop Indication message, that is, source needs logical when terminating radio-frequency channel calibration function Know the message of opposite end, which is an instruction, it may not be necessary to carry other fields.Opposite end receives after the message such as Fruit can then return to RF Calibration Stop Ack with fair termination radio-frequency channel correction process function；If opposite end occurs It is abnormal, then need to return RF Calibration Error Indication；

RF Calibration Stop Ack message initiates side notice opposite end and the RF that opposite end is sent has been received Calibration Stop Indication message is simultaneously successfully processed, which does not need to carry other fields；

RF Calibration Error Indication message can be initiated by any side tested, as tested AAU When equipment or test instrumentation processing radio-frequency channel calibration function are abnormal, need to initiate the instruction of this message to opposite end, together Shi Benduan and the opposite end for receiving message require to stop radio-frequency channel calibration function.The message indicates an indicative function.No Need to carry other fields；

Second communication connection, such as network interface, due to transmitting thereon in radio-frequency channel calibration function provided in an embodiment of the present invention Interacting message it is fairly simple, therefore, the present embodiment can use simple ASIIC code form, but can also use ASN.1 etc. Expression way, but it is not limited to these implementations.

Further, the AAU equipment of TDD LTE and TDD 5G involved in the present embodiment, as shown in figure 4, first school The middle position of the GP between data frame UL and DL can be set in positive sequence, guarantees that sender just switches to after distributing correction sequence Uplink state will also guarantee that recipient can switch to the state of uplink receiving before correction sequence starting, so this position needs It wants two sides to arrange or initial position is specified by configuration message in the range of can centainly support.Can choose length such as is The first correction sequence of 512Ts.

Step 103: according to the signal characteristic parameter difference, each radio-frequency channel being compensated；

After known amplitude deviation and phase deviation, this time corrected as long as carrying out corresponding compensation and can be completed.Such as determination There is the decaying of a certain numerical value in corresponding radio-frequency channel, then can compensate the value of decaying；The main body of compensation can be test Instrument is also possible to tested AAU equipment.Such as tested AAU equipment compensates, then test instrumentation needs to feed back to tested AAU and sets The signal characteristic parameters differences such as standby feedback magnitude deviation and phase deviation information.

Frequency domain compensation values can use expression formulaIt indicates；Wherein, i is radio-frequency channel index, and k is frequency domain load Wave index；α is amplitude compensation value,For phase compensation value.Time domain compensation value can use expression formulaIt indicates；It is tested AAU equipment and test instrumentation can be special according to the signal by the second communication connection interaction signal characteristic parameter difference Sign parameter difference compensates；

By taking the correction of the radio-frequency channel of downlink as an example, i.e. the first correction sequence is dealt on test instrumentation by tested AAU equipment, quilt Survey AAU equipment can control each radio-frequency channel and send the first correction sequence at the time of specific, and test instrumentation receives the second correction After sequence, so that it may the amplitude, phase and delay variation of each radio-frequency channel are obtained, since each radio-frequency channel is all that RF cable is straight It connects in succession, under conditions of known correction sequence, the amplitude deviation and phase deviation of each radio-frequency channel are readily available, tool For body acupuncture to Pre5G and 5G system, general amplitude deviation and phase deviation are all based on subcarrier in frequency domain, but are also not necessarily limited to time domain On amplitude deviation and digital baseband input signal.After test instrumentation obtains signal characteristic parameter difference, local compensation can be carried out；? Signal characteristic parameter difference can be sent to tested AAU equipment by the second communication connection, be mended by tested AAU equipment It repays.

Downlink radio frequency channel correcting main process flow steps can be as shown in Figure 5 and Figure 6；Wherein:

Fig. 5 is during downlink radio frequency channel correcting, width mutually compensates and compensates specific steps by test instrumentation, comprising:

Step 501: initiating the first school in designated position of the tested AAU equipment on all radio-frequency channels of the first communication connection Positive sequence；

Step 502: the width phase difference of each radio-frequency channel is calculated in test instrumentation the second correction sequence based on the received；

Step 503: the width that test instrumentation carries out each radio-frequency channel mutually compensates.

Fig. 6 compensates specific steps by tested AAU equipment for during downlink radio frequency channel correcting, width is mutually compensated, and wraps It includes:

Step 601: initiating the first school in designated position of the tested AAU equipment on all radio-frequency channels of the first communication connection Positive sequence；

Step 602: the width phase difference of each radio-frequency channel is calculated in test instrumentation the second correction sequence based on the received；

Step 603: test instrumentation is set by the width phase difference that each radio-frequency channel is fed back in the second communication connection to tested AAU It is standby；

Step 604: the width that tested AAU equipment carries out each radio-frequency channel mutually compensates.

If it is upstream radio-frequency channel correcting, i.e. the first correction sequence is dealt into tested AAU equipment, tester from test instrumentation Table controls each radio-frequency channel and sends the first correction sequence at the time of specific, after tested AAU equipment receives the second correction sequence, just The Magnitude Difference and phase difference value of available each radio-frequency channel can carry out local compensation, can also be by signal characteristic parameter Difference is reported to test instrumentation by the second communication connection, is compensated by test instrumentation；

Upstream radio-frequency channel correcting main process flow steps can be as shown in Figure 7 and Figure 8；Wherein:

Fig. 7 compensates specific steps by tested AAU equipment for during upstream radio-frequency channel correcting, width is mutually compensated, and wraps It includes:

Step 701: initiating the first correction in designated position of the test instrumentation on all radio-frequency channels of the first communication connection Sequence；

Step 702: being tested AAU equipment the second correction sequence based on the received, the width phase of each radio-frequency channel is calculated Difference；

Step 703: the width that tested AAU equipment carries out each radio-frequency channel mutually compensates.

Fig. 8 is during upstream radio-frequency channel correcting, width mutually compensates and compensates specific steps by test instrumentation, comprising:

Step 801: initiating the first correction in designated position of the test instrumentation on all radio-frequency channels of the first communication connection Sequence；

Step 802: the second correction sequence, the width that each radio-frequency channel is calculated differ tested AAU equipment based on the received Value；

Step 803: tested AAU equipment feeds back the width phase difference of each radio-frequency channel to tester by the second communication connection Table；

Step 804: the width that test instrumentation carries out each radio-frequency channel mutually compensates.

After system compensation of the invention, the equal of each radio-frequency channel in the test surfaces of test instrumentation is only standard True, the standardized test that standard input carries out Massive MIMO can be used as.

In the correction course of radio-frequency channel, each combined situation for compensating main body can be as shown in table 6；

	Downlink corrects (AAU- > test instrumentation)	Uplink corrects (test instrumentation -> AAU)
			Compensate body combination 1	AAU	Test instrumentation
Compensate body combination 2	Test instrumentation	AAU
			Compensate body combination 3	Test instrumentation	Test instrumentation
Compensate body combination 4	AAU	AAU

Table 6

For the compensation body combination 1 in table 6, downlink system timing calculates each radio-frequency channel width by test instrumentation and differs Width phase difference is fed back to tested AAU equipment by value, test instrumentation, carries out downlink radio frequency channel compensation by tested AAU equipment；Uplink Width phase difference is calculated by tested AAU equipment when system compensation, and feeds back to test instrumentation, upstream radio-frequency is carried out by test instrumentation and is led to Road compensation；

For the compensation body combination 2 in table 6, downlink system timing calculates each radio-frequency channel width by test instrumentation and differs Value directly carries out system-level downlink radio frequency channel compensation in tester table side；Up-link timing is calculated by tested AAU equipment Width phase difference out, and system-level upstream radio-frequency channel compensation is carried out directly on AAU；The combination has an advantage in that, exactly mends The step of repaying and directly done in the equipment for calculating width phase difference, eliminating feedback width phase difference.For Pre5G and 5G system, often The information content of width phase difference on each subcarrier of a radio-frequency channel is bigger, if combined according to the compensation, overall flow It is more succinct；

For the compensation body combination 3 in table 6, downlink system timing calculates each radio-frequency channel width by test instrumentation and differs Value directly carries out system-level downlink radio frequency channel compensation in tester table side；Up-link timing is calculated by tested AAU equipment Width phase difference out, and test instrumentation is fed back to, upstream radio-frequency channel compensation is carried out by test instrumentation；The advantages of combination is up and down Capable radio-frequency channel compensation is all realized in tester table side, minimum for being tested the influence of AAU equipment in this way；

For the compensation body combination 4 in table 6, downlink system timing calculates each radio-frequency channel width by test instrumentation and differs Width phase difference is fed back to tested AAU equipment by value, test instrumentation, carries out downlink radio frequency channel compensation by tested AAU equipment；Uplink Width phase difference is calculated by tested AAU equipment when system compensation, and carries out system-level upstream radio-frequency channel directly on AAU and mends It repays；Influence of the combination to test instrumentation is minimum.

It is described in further detail below with reference to the good effect that specific example generates the present invention；

The whole process for the system-level radio-frequency channel correction that this example proposes is as shown in attached drawing 9:

Step 901: the initiation of system-level radio-frequency channel correcting process；The process initiates radio-frequency channel correction by initiator Process carries out radio-frequency channel correction process according to the correction configuration of initiation if recipient supports the correcting process；If no Support then prompts to fail；Also allow tested both sides, i.e., the configuration of tested AAU equipment and test instrumentation according to default agreement, default Radio-frequency channel correcting process process, thus the step for saving；

Step 902: the process of system-level radio-frequency channel correction；I.e. system is corrected processing according to the correction parameter of configuration It is compensated with radio-frequency channel.The most basic step i.e. key step of inventive embodiments that the process includes；

Step 903: ends with system grade radio-frequency channel correcting process.No matter actively initiate to terminate process or abnormal end stream Journey has required this process.After function, radio-frequency channel is no longer compensate for, and is equal to state when not initiating.

This example is implemented by the way of selection combination 3 in table 6, i.e. the system-level radio-frequency channel compensation of uplink and downlink is all being surveyed It realizes, tested AAU equipment is influenced so minimum in examination instrument；In this example, the friendship being tested between AAU equipment and test instrumentation TCP mode is mutually selected；The message interaction process such as attached drawing 7 and attached drawing 8 of tested AAU equipment and test instrumentation；

Downlink system grade radio-frequency channel corrects tested AAU equipment and the message interaction process of test instrumentation is as shown in Figure 10:

Step 1001: the monitoring of open system grade radio-frequency channel correction interaction message is defaulted at primary condition, both ends；Radio frequency is logical The interaction of channel correction uses TCP mode in this example, and defaults and arranged specific port numbers, and the spy is monitored in so-called monitoring The TCP message of fixed end slogan.Real system can also pass through the modes such as UDP or RUDP；

Step 1002: tested AAU device configuration radio-frequency channel calibration function；The information of configuration may include the first correction sequence Initial position, calibration cycle, the first correction sequence quantity that correction is sent every time etc. of column, the first correction sequence in the frame structure Parameter can not also specify, allocating default parameter, i.e. a set of configuration for all defaulting of test instrumentation and tested AAU equipment two sides.It lifts Example explanation, this embodiment are configured with the first correction sequence of default, and calibration cycle is 10 minutes, configure each correction course and hold Continuous 10 subframes etc.；

Step 1003: tested AAU equipment is communicated to test instrumentation initiation radio-frequency channel calibration function configuration by network interface and is asked Message is sought, the radio-frequency channel calibration function information configured in content, that is, step 1002 of the message；

Step 1004: after test instrumentation receives the radio-frequency channel calibration function configuration request message sent opposite end, confirmation Can this test instrumentation currently be supported, if can support, respond configuration successful message, the feedback configuration if it cannot support Failed message, test instrumentation responds configuration successful in this example flow；

Step 1005: after tested AAU equipment receives the radio-frequency channel calibration function configuration successful message of opposite end return, Start to start radio-frequency channel correction process process, the specific process is the step 1006 periodically initiated；

Step 1006: the step is the step of being repeated cyclically initiation, comprising sub-step 10061,10062, 10063,10064.When radio-frequency channel, calibration function is configured to periodically carry out radio-frequency channel correction, then the step each cycle all can It initiates, until radio-frequency channel calibration function terminates；

Step 10061: tested AAU equipment sends the first correction sequence on each radio-frequency channel；The sequence of first correction sequence Column content, transmission position and each correction course need number of the first correction sequence continuously transmitted etc. all in radio frequency It is determined in channel correcting functional configuration；

Step 10062: test instrumentation needs to collect all second correction sequences of all radio-frequency channels, calculates each radio frequency Average amplitude on channel is poor, average phase-difference, and these measured values is aggregated into the measurement report of this radio-frequency channel correction；

Step 10063: test instrumentation sends the measurement report that this radio-frequency channel corrects to tested AAU equipment by network It accuses；Since downlink compensation is compensated by test instrumentation in this example, then the measurement report is logical without carrying specific radio frequency Channel correction offset, and only need to indicate compensation by test instrumentation direct compensation；

Step 10064: test instrumentation is directly completed in local terminal according to the radio-frequency channel correcting measured results of step 10062 The compensation of each radio-frequency channel amplitude phase；

Step 1007: after test, system can terminate radio-frequency channel calibration function, set firstly for tested AAU For standby, each radio-frequency channel needs to stop the transmission of correction sequence；It is to be appreciated that terminating radio-frequency channel correction can choose manually It terminates, perhaps just sets the testing time by abnormal trigger flow or when configuring and correcting, when tested the interior period All system automatically initiates termination correction to number after the completion；

Step 1008: when radio-frequency channel calibration function stops, being tested AAU equipment can be initiated by network to test instrumentation Radio-frequency channel correction terminates；

Step 1009: after test instrumentation receives radio-frequency channel correction termination messages, test instrumentation stops correction sequence Reception, and the message for giving tested AAU equipment radio frequency channel correcting to terminate by network-feedback.

The embodiment of up-link grade radio-frequency channel correction is specifically as shown in figure 11:

Step 1101: the monitoring of open system grade radio-frequency channel correction interaction message is defaulted at primary condition, both ends.Radio frequency is logical The interaction of channel correction uses TCP mode in the present embodiment, and defaults and arranged specific port numbers, and so-called monitoring is monitored should The TCP message of certain port number.Real system can also pass through the modes such as UDP or RUDP；

Step 1102: test instrumentation configures radio-frequency channel calibration function.The information of configuration further includes the first correction sequence, The parameters such as initial position, calibration cycle, the first correction sequence quantity that correction is sent every time of one correction sequence in the frame structure, It can not also specify, allocating default parameter, i.e. a set of configuration for all defaulting of test instrumentation and tested AAU equipment two sides.It illustrates Bright, the first correction sequence of this example arrangement default, calibration cycle is 10 minutes, configures each correction course and continues 10 sons Frame etc.；

Step 1103: test instrumentation is communicated to the initiation radio-frequency channel calibration function configuration of tested AAU equipment by network interface and is asked Message is sought, the radio-frequency channel calibration function information configured in content, that is, step 1102 of the message.

Step 1104: after tested AAU equipment receives the radio-frequency channel calibration function configuration request message sent opposite end, really Can this test instrumentation be recognized currently support, if can support, respond configuration successful message, feed back and match if it cannot support Failed message is set, test instrumentation responds configuration successful in this example flow；

Step 1105: after test instrumentation receives the radio-frequency channel calibration function configuration successful message of opposite end return, opening Begin starting radio-frequency channel correction process process, and the specific process is the step 1106 periodically initiated；

Step 1106: the step is the step of being repeated cyclically initiation, comprising sub-step 11061,11062, 11063,11064.When radio-frequency channel, calibration function is configured to periodically carry out radio-frequency channel correction, then the step each cycle all can It initiates, until radio-frequency channel calibration function terminates；

Step 11061: test instrumentation sends the first correction sequence on each radio-frequency channel.Sequence content, send position with And the number of the first correction sequence etc. that each correction course needs to continuously transmit all has been configured in radio-frequency channel calibration function In determine；

Step 11062: tested AAU equipment needs to collect all second correction sequences of all radio-frequency channels, calculates each Average amplitude on radio-frequency channel is poor, average phase-difference, and these measured values is aggregated into the measurement of this radio-frequency channel correction Report；

Step 11063: tested AAU equipment communicates to connect to test instrumentation by second and sends what this radio-frequency channel corrected Measurement report；It is to be compensated by test instrumentation, therefore the measurement report needs to carry tool by the compensation of downlink in this present embodiment The radio-frequency channel rectification building-out value of body is equivalent to instruction radio-frequency channel width and mutually compensates and completed by test instrumentation；

Step 11064: test instrumentation completes each radio-frequency channel according to the radio-frequency channel correcting measured results of step 11063 The compensation of amplitude phase；

Step 1107, after test, system can terminate radio-frequency channel calibration function, firstly for test instrumentation come It says, each radio-frequency channel needs to stop the transmission of correction sequence；It is to be appreciated that terminating radio-frequency channel correction can choose manual end Only, the testing time is just set perhaps by abnormal trigger flow or when configuring and correcting, when tested interior periodicity System automatically initiates termination correction after the completion of all.This example demonstrates that the manual process for initiating to terminate；

Step 1108, when radio-frequency channel calibration function stop when, test instrumentation can be initiated by network to tested AAU equipment Radio-frequency channel correction terminates；

Step 1109, when tested AAU equipment receive radio-frequency channel correction termination messages after, equipment under test stop correction sequence The reception of column, and the message terminated is corrected to test instrumentation radio-frequency channel by network-feedback.

This example also provides some abnormal processes.Such as Figure 12 and Figure 13, equipment A and equipment B in figure are respectively tested AAU equipment and test instrumentation or test instrumentation and tested AAU equipment.

Figure 12 is the abnormal process of radio-frequency channel correction configuration process, detailed process are as follows:

Step 1201: equipment A initiates the configuration of radio-frequency channel calibration function to equipment B by the second communication connection, such as network interface Request message；

Step 1202: after equipment B receives the radio-frequency channel calibration function configuration request message sent opposite end, confirmation is originally set It is standby currently to support, if not supporting or having other exceptions, respond configuration failure message；

Step 1203: equipment A terminates the process of this system-level radio-frequency channel calibration function, and prompt system configuration is lost It loses.

Figure 13 is such as abnormal, then system terminates the process of correction automatically in radio-frequency channel correction operational process:

Step 1301: two side apparatus are in the system-level radio-frequency channel correction operation phase；

Step 1302: it is abnormal that equipment A detects that system-level radio-frequency channel correction process occurs, then terminates the correction stream automatically Journey, but keep the monitoring of the radio-frequency channel correction interaction message of the second communication connection

Step 1303: equipment A needs to initiate radio-frequency channel calibration function exception instruction message " RF to opposite equip. in time Calibration Error Indication"；

Step 1304: equipment B terminates the radio-frequency channel calibration function and measurement function, but keeps penetrating for the second communication connection The monitoring of frequency channel correcting interaction message.

Radio-frequency channel means for correcting provided in an embodiment of the present invention, as shown in figure 14, described device include: acquisition module 141, computing module 142 and compensating module 143；Wherein,

The acquisition module 141, for by the first correction sequence by first communication connection in each radio-frequency channel respectively into Row transmission obtains corresponding second correction sequence in each radio-frequency channel received after transmission every time；

Here, carry out the first communication connection can be AAU equipment and test instrumentation, and first correction sequence can be from The sending of AAU equipment can also be issued by test instrumentation, when AAU equipment issues the first correction sequence, it is believed that be to carry out down Row correction, at this point, test instrumentation is corresponding by receiving each radio-frequency channel after radio-frequency channel transmission each in the first communication connection Second correction sequence；When test instrumentation issues the first correction sequence, it is believed that be to carry out uplink correction, at this point, AAU equipment Corresponding second correction sequence in each radio-frequency channel is received after each radio-frequency channel transmission in first communication connection；Here, according to Corresponding second correction sequence of one correction sequence and each radio-frequency channel determines that the signal characteristic parameter difference of each radio-frequency channel can be with It carries out, can also be carried out in test instrumentation in AAU equipment；First communication connection can be the shifting such as 4G, Pre5G or 5G Dynamic communication connection；Here, the test instrumentation can be Vector Signal Analyzer etc. for measuring the instrument of radiofrequency signal.Its In, what first correction sequence and the second correction sequence embodied respectively be same correction sequence before transmission with the body after transmission Existing form.

Further, in order to reduce the shadows of some AAU equipment or test instrumentation itself unstable factor and environmental factor It rings, can be transmitted several times, the number of the transmission can be preset；The preset times can be according to AAU equipment, tester The setting of the actual conditions of table and ambient enviroment, can only transmit 1 time or transmit repeatedly；

The computing module 142, for according to first correction sequence and second correction sequence, use to be pre-designed Calculate the signal characteristic parameter difference that rule determines each radio-frequency channel；

Further, the default computation rule includes regular execution unit, and the rule execution unit is specifically used for: root According to the second correction sequence that each radio-frequency channel receives in preset times transmission, each radio-frequency channel corresponding second is calculated separately The arithmetic average of correction sequence；According to first correction sequence and the arithmetic average, the letter of each radio-frequency channel is determined Number characteristic parameter difference；

Further, each radio-frequency channel can be determined according to the signal characteristic parameter difference of each radio-frequency channel Offset；By the second communication connection, the signal characteristic parameter difference of interaction each radio-frequency channel, and/or described respectively penetrate The offset in frequency channel；According to the signal characteristic parameter difference and/or offset, each radio-frequency channel is compensated；

Specifically, in practical application, the radio-frequency channel correction interaction message for passing through the second communication connection interaction can be with Based on protocol modes such as TCP, UDP or RUDP.Here, in TCP mode as an example, and default port has been selected, such as 15158, related to And radio-frequency channel correction interaction message and process can be as shown in table 1；

Further, the AAU equipment of TDD LTE and TDD 5G involved in the present embodiment, as shown in figure 4, first school The middle position of the clearance G P between data frame UL and DL can be set in positive sequence, guarantees sender after distributing correction sequence Uplink state is switched to, also to guarantee that recipient can switch to the state of uplink receiving before correction sequence starting, so this position It sets and needs two sides to arrange or initial position is specified by configuration message in the range of can centainly support.It can choose such as length For the first correction sequence of 512Ts.

The compensating module 143, for being compensated to each radio-frequency channel according to the signal characteristic parameter difference.

In practical applications, described: obtaining module 141, computing module 142 and compensating module 143 can be by AAU equipment With central processing unit (CPU), microprocessor (MCU), digital signal processor (DSP) or the field-programmable in test instrumentation Gate array (FPGA) etc. is realized.

A kind of storage medium provided in an embodiment of the present invention is stored thereon with executable program, the executable code Radio-frequency channel bearing calibration is realized when processor executes；

The radio-frequency channel bearing calibration, as shown in Figure 1, which comprises

Here, the first correction sequence and the second correction sequence can choose ZC sequence, use It indicates； Wherein,Indicate sequence length；For example, in embodiment, Pre5G system selectable lengths are that 512,5G system can be with Select length for 1024.Width is differed and is calculated, it, can be using the channel mould of single-shot list receipts since system is that RF cable is direct-connected Type carries out channel estimation, obtains the amplitude deviation and phase deviation in each channel；Here there are two processing method, conventional method is Other channels fix channel according to some and do opposite difference in magnitude and phase difference, or because being that cable is direct-connected, the phase of interchannel Mutually influence is smaller, and the absolute difference in magnitude and phase difference in each channel can be obtained by equalization algorithm.

The width difference in respective channel is calculated in this implementation according to LS channel estimation method.Its principle such as expression formula (1)；Wherein, H is channel response, and Xp is known correction sequence, i.e. the first correction sequence, Yp is the correction sequence received, That is the second correction sequence, Wp are the noise in corresponding subchannel；The available corresponding H value of LS channel estimation, can use expression formula (2) it indicates；

Correction needs to continuously transmit n times correction sequence every time, can finally obtain an average H value, with channel i, sub- load Channel response value on wave k can be indicated with expression formula (3)；Wherein, h_i,kIndicate channel impulse response, α_i,kIndicate that amplitude becomes Change,Amplitude variation, in this way, the corresponding difference in magnitude in available each channel and phase difference；

Specifically, in practical application, the radio-frequency channel correction interaction message for passing through the second communication connection interaction can be with Based on protocol modes such as TCP, UDP or RUDP.Here, in TCP mode as an example, and default port has been selected, such as 15158, related to And radio-frequency channel correction interaction message and process can be as shown in table 1

RF Calibration Config Request message, that is, radio-frequency channel calibration function configuration request message, this disappears Configuration Type of the breath comprising correction, if it is Default, then to be tested default agreement between AAU equipment and test instrumentation, such as Fruit is Specidied, then need to specify in message correction sequence, correction sequence correct every time the sequence number continuously transmitted, The position and calibration cycle that correction sequence is sent.Significant field in the message can be as shown in table 2；

Information processing unit provided in an embodiment of the present invention, including memory, processor and storage are on a memory and energy Enough executable programs run by the processor, described device further include two for store clock lasso status information RAM；The processor executes radio-frequency channel bearing calibration when running the executable program；

Further, second communication connection is also used to the interaction of radio-frequency channel correction interaction message；The radio frequency is logical Channel correction interaction message includes at least one of: first correction sequence, and/or preset times, and/or calibration cycle. The AAU equipment and test instrumentation correct interaction message according to the radio-frequency channel and carry out radio-frequency channel correction；

For the compensation body combination 4 in table 6, downlink system timing calculates each radio-frequency channel width by test instrumentation and differs Width phase difference is fed back to tested AAU equipment by value, test instrumentation, carries out downlink radio frequency channel compensation by tested AAU equipment；Uplink Width phase difference is calculated by tested AAU equipment when system compensation, and carries out system-level upstream radio-frequency channel directly on AAU and mends It repays；Influence of the combination to test instrumentation is minimum

The above, only highly preferred embodiment of the present invention, are not intended to limit the scope of the present invention, it is all Made any modifications, equivalent replacements, and improvements etc. within the spirit and principles in the present invention, should be included in protection of the invention Within the scope of.

Claims

1. a kind of radio-frequency channel bearing calibration, which is characterized in that the described method includes:

First correction sequence is transmitted respectively by each radio-frequency channel in the first communication connection, is received after obtaining transmission every time Corresponding second correction sequence in each radio-frequency channel arrived；

According to first correction sequence and second correction sequence, the letter of each radio-frequency channel is determined using default computation rule Number characteristic parameter difference；

2. the method according to claim 1, wherein described determine each radio-frequency channel using default computation rule Signal characteristic parameter difference, comprising:

According to the second correction sequence that each radio-frequency channel receives in preset times transmission, it is corresponding to calculate separately each radio-frequency channel The second correction sequence arithmetic average；

According to first correction sequence and the arithmetic average, the signal characteristic parameter difference of each radio-frequency channel is determined.

3. method according to claim 1 or 2, which is characterized in that the signal characteristic parameter difference, comprising: difference in magnitude, And/or phase difference, and/or delay variation.

4. method according to claim 1 or 2, which is characterized in that the method also includes:

By the second communication connection, the signal characteristic parameter difference of interaction each radio-frequency channel, and/or each radio-frequency channel Offset；

5. according to the method described in claim 4, it is characterized in that, the method also includes:

The radio-frequency channel correction interaction message includes at least one of: first correction sequence, the preset times, school Positive period.

6. the method according to claim 1, wherein

First communication connection is that mobile communication connects；

Each radio-frequency channel is RF cable connection.

7. according to the method described in claim 6, it is characterized in that,

First correction sequence is arranged in the data frame of mobile communication connection between uplink UL and downlink DL in clearance G P Between position, by it is described first communication connection in each radio-frequency channel transmitted.

8. a kind of radio-frequency channel means for correcting, which is characterized in that described device includes: to obtain module, computing module and compensation mould Block；Wherein,

The acquisition module, for the first correction sequence to be transmitted respectively by each radio-frequency channel in the first communication connection, Obtain corresponding second correction sequence in each radio-frequency channel received after transmission every time；

The computing module is used for according to first correction sequence and second correction sequence, using default computation rule Determine the signal characteristic parameter difference of each radio-frequency channel；

9. device according to claim 8, which is characterized in that the computing module includes regular execution unit, the rule Then execution unit is specifically used for:

10. device according to claim 8 or claim 9, which is characterized in that the signal characteristic parameter difference, comprising: amplitude Difference, and/or phase difference, and/or delay variation.

11. device according to claim 8 or claim 9, which is characterized in that the compensating module is also used to:

12. device according to claim 11, which is characterized in that second communication connection is also used to radio-frequency channel correction The interaction of interaction message；

13. device according to claim 8, which is characterized in that

First communication connection is that mobile communication connects；

Each radio-frequency channel is RF cable connection.

14. device according to claim 13, which is characterized in that

The middle position of GP between UL and DL in the data frame of the mobile communication connection is arranged in first correction sequence, leads to Each radio-frequency channel in first communication connection is crossed to be transmitted.

15. a kind of storage medium, is stored thereon with executable program, which is characterized in that the executable code processor is held The step of radio-frequency channel corrects as described in any one of claim 1 to 7 is realized when row.