CN107395533A - A kind of channel correcting method and means for correcting - Google Patents
A kind of channel correcting method and means for correcting Download PDFInfo
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- CN107395533A CN107395533A CN201710472403.XA CN201710472403A CN107395533A CN 107395533 A CN107395533 A CN 107395533A CN 201710472403 A CN201710472403 A CN 201710472403A CN 107395533 A CN107395533 A CN 107395533A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0264—Arrangements for coupling to transmission lines
- H04L25/0272—Arrangements for coupling to multiple lines, e.g. for differential transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
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Abstract
The embodiment of the present application discloses a kind of channel correcting method and means for correcting, if for solving present in prior art that the channel allocation of radio frequency unit can be had that cell does not include correction channel and leads to not carry out channel correcting to different cells.The embodiment of the present application method includes：First correction sequence is sent by correction data feedback channel of the business down going channel of first community to second community；Second correction sequence of the correction data feedback channel received from second community is sent to the first BBU；3rd correction sequence is sent to the business data feedback channel of first community by the correction down going channel of second community, the 3rd sequence during the business down going channel of first community by being changed into the 4th sequence；Send the 4th correction sequence to the first BBU.
Description
Technical field
The application is related to communication technical field, more particularly to a kind of channel correcting method and means for correcting.
Background technology
With the development of the communication technology, drawn by indoor Base Band Unit (building baseband unit, BBU) and radio frequency
The distributed base station of remote unit (radio remote unit, RRU) composition is widely used, the distributed base station energy
Enough the radio frequency of base station and baseband module is allowed to separate on a physical layer.In multichannel RRU, due to a series of devices phase and
Frequency response caused by gain difference, aging, width/phase behaviour distortion, Filter delay etc. it is inconsistent all by cause passage when
Become error.So real passage will have larger difference with non-ideal channel, influence the overall performance of system.Therefore need
Channel correcting function is realized, the essence of channel correcting function is exactly tracking and compensation channel time delay and its width/phase behaviour, to cause
Width/phase behaviour of itself and reference channel reaches unanimity, and reduces the error of passage, meets the required precision of system.
In the prior art, correction channel is generally disposed in RRU, wherein correction channel is that one kind increases on normal channel
The dedicated channel of the hardware such as termination power composition, its correcting mode can include, Injection Signal known to BBU generations, according to school
Positive passage, BBU can utilize the channel characteristic of each service channel of characteristic estimating of known Injection Signal, differ to carry out interchannel
The compensation of cause, interchannel time delay inconsistency can also be compensated therewith.
But in the prior art, because reason, the numbers of correction channel such as hardware cost, space for its deployment limitation are less than business
The number of passage, and just can not at will be changed after the determination of correction channel hardware deployed position.If RRU channel allocations to difference
Cell, then can there is a situation where cell do not include correction channel and lead to not carry out channel correcting, for example, as shown in Figure 1A
RRU passages, the RRU passages include 8 passages, and each passage has transmission-receiving function, if by 2 in 8 passages,
4th, 6,8 channel allocations establish 4T4R cell to first cell, and 1,3,5,7 channel allocations in addition establish 4T4R to second cell
Cell, and correction channel supports channel correcting in 2,4 passages, therefore first cell, and second cell can not support channel correcting.
The content of the invention
The embodiment of the present application provides a kind of channel correcting method and means for correcting, for solving to exist in the prior art
If the channel allocation radio frequency unit give different cells, can exist cell not comprising correction channel and lead to not carry out
The situation of channel correcting.
The first aspect of the embodiment of the present application provides a kind of channel correcting method, including：Pass through the business of first community
Correction data feedback channel of the down going channel to second community sends the first correction sequence, and first correction sequence reaches the correction
It is changed into the second correction sequence during data feedback channel, the passage of the passage of the first community and the second community is contained in same penetrate
Frequency unit；Second correction sequence of the correction data feedback channel received from the second community is sent to the first BBU, to cause
State the first BBU obtained according to first correction sequence and second correction sequence first community each business it is descending logical
The hair correction coefficient in road；Sent by the correction down going channel of the second community to the business data feedback channel of the first community
3rd correction sequence, the 3rd sequence during business data feedback channel of the first community by being changed into the 4th sequence；Send institute
The 4th correction sequence is stated to the first BBU, to cause the first BBU according to the 3rd correction sequence and the 4th school
Positive sequence obtains the receipts correction coefficient of each business data feedback channel of the first community.In the embodiment of the present application, penetrated when at one
Correction channel is deployed with frequency unit, and does not have correction channel in the first community established, then first community can use same
The correction channel of second community in individual radio frequency unit is corrected, if solving present in prior art radio frequency unit
Different cells is given in channel allocation, then that cell does not include correction channel and leads to not carry out channel correcting can be present.
In a kind of possible design, in the first implementation of the embodiment of the present application first aspect, the hair school
Positive coefficient is corresponding with sending hair correction sequence other described to send the channel response of the first reference channel of hair correction sequence
The ratio of the channel response of passage, first reference channel are contained in each business down going channel of the first community.This reality
In existing mode, the calculation of hair correction coefficient is refined, has made the embodiment of the present application that more there is operability.
In a kind of possible design, in second of implementation of the embodiment of the present application first aspect, the receipts school
Positive coefficient is corresponding with receiving receipts correction sequence other described to receive the channel response for the second reference channel for receiving correction sequence
The ratio of the channel response of passage, second reference channel are contained in each business data feedback channel of the first community.This reality
In existing mode, the calculation for receiving correction coefficient is refined, has made the embodiment of the present application that more there is operability.
In a kind of possible design, in the third implementation of the embodiment of the present application first aspect, the described 3rd
Correction sequence is generated by the first BBU or generated by the 2nd BBU of the second community.In this implementation, illustrate
3rd correction sequence can both have the first BBU generations, can also be generated by the 2nd BBU, add the realization of the embodiment of the present application
Mode.
In a kind of possible design, in the 4th kind of implementation of the embodiment of the present application first aspect, the transmission
After second correction sequence to the first BBU, the 4th correction sequence of transmission to the first BBU, methods described also includes：Connect
Receive the hair correction coefficient and the receipts correction coefficient；According to the receipts correction coefficient and the hair correction coefficient respectively to described
The business data feedback channel and business down going channel of first community compensate.In this implementation, add and obtained receiving correction system
After number and hair correction coefficient, the passage of first community is compensated so that the embodiment of the present application logical sum step is more perfect.
In a kind of possible design, in the 5th kind of implementation of the embodiment of the present application first aspect, the basis
The receipts correction coefficient and the hair correction coefficient are respectively to the business data feedback channel and business down going channel of the first community
Compensate including：The up non-channel correcting service signal received by the business data feedback channel of the first community is multiplied by
It is described to receive correction coefficient to compensate；The descending non-channel correcting that will be sent by the business down going channel of the first community
Service signal is multiplied by the hair correction coefficient to compensate.In this implementation, refined how according to receive correction coefficient and
Hair correction coefficient compensates to passage, the embodiment of the present application is more being enriched, and add practical operation.
In a kind of possible design, in the 6th kind of implementation of the embodiment of the present application first aspect, described first
Correction sequence is generated by the Base Band Unit of the first community according to the mark of the first community.In this implementation, explanation
First correction sequence can generate according to the mark of first community, add the achievable mode of the embodiment of the present application.
It is described to pass through in the 7th kind of implementation of the embodiment of the present application first aspect in a kind of possible design
Before correction data feedback channel of the business down going channel of the first community to second community sends the first correction sequence, the side
Method also includes：Receive first correction sequence that the first BBU is sent.In this implementation, add what is how obtained
First correction sequence so that the embodiment of the present application is clearer in logic.
In a kind of possible design, in the 8th kind of implementation of the embodiment of the present application first aspect, described first
Cell is corrected using the correction channel of the second community simultaneously with the second community.In this implementation, refinement
First community can be corrected simultaneously with second community, and add the embodiment of the present application realizes scene.
In a kind of possible design, in the 9th kind of implementation of the embodiment of the present application first aspect, described first
Cell is corrected with the second community timesharing using the correction channel of the second community.In this implementation, refinement
First community can be corrected with second community with timesharing, and add the embodiment of the present application realizes scene.
In a kind of possible design, in the tenth kind of implementation of the embodiment of the present application first aspect, when described
When the passage of two cells is not activated, the first community is corrected using the correction channel of the second community.This realization
In mode, when having refined the passage of second community and not working, first community still can use the correction channel of second community enter
Row correction, add the embodiment of the present application realizes scene.
In a kind of possible design, in a kind of the tenth implementation of the embodiment of the present application first aspect, when described
When second community is not present or do not set up, the first community carries out school using the correction channel configured in the radio frequency unit
Just.In this implementation, when being not present of second community is refined, first community still can use configuration in radio frequency unit
Correction channel is corrected, and add the embodiment of the present application realizes scene.
The second aspect of the embodiment of the present application provides a kind of means for correcting, including：First transmitting element, for passing through
Correction data feedback channel of the business down going channel of one cell to second community sends the first correction sequence, first correction sequence
It is changed into the passage of the second correction sequence, the passage of the first community and the second community when reaching the correction data feedback channel
It is contained in same radio frequency unit；Second transmitting element, for by received from the second community correction data feedback channel second
Correction sequence is sent to the first BBU, to cause the first BBU according to first correction sequence and second correction sequence
Obtain the hair correction coefficient of each business down going channel of the first community；3rd transmitting element, for small by described second
The correction down going channel in area sends the 3rd correction sequence to the business data feedback channel of the first community, and the 3rd sequence passes through
It is changed into the 4th sequence during the business data feedback channel of the first community；4th transmitting element, for sending the 4th correction sequence
Row are to the first BBU, to cause the first BBU to obtain institute according to the 3rd correction sequence and the 4th correction sequence
State the receipts correction coefficient of each business data feedback channel of first community.In the embodiment of the present application, disposed when in a radio frequency unit
There is correction channel, and there is no correction channel in the first community established, then first community can be used in same radio frequency unit
The correction channel of second community be corrected, if solving present in prior art the channel allocation of radio frequency unit to not
Same cell, then that cell does not include correction channel and leads to not carry out channel correcting can be present.
In a kind of possible design, in the first implementation of the embodiment of the present application second aspect, the hair school
To send, channel response corresponding to the first reference channel of hair correction sequence and other are described to send hair correction sequence pair to positive coefficient
The ratio of the channel response for the passage answered, first reference channel are contained in each business down going channel of the first community.
In this implementation, the calculation of hair correction coefficient is refined, has made the embodiment of the present application that more there is operability.
In a kind of possible design, in second of implementation of the embodiment of the present application second aspect, the receipts school
To receive, channel response corresponding to the second reference channel of receipts correction sequence and other are described to receive correction sequence to positive coefficient
The ratio of the channel response of corresponding passage, each business that second reference channel is contained in the first community are up logical
Road.In this implementation, the calculation for receiving correction coefficient is refined, has made the embodiment of the present application that more there is operability.
In a kind of possible design, in the third implementation of the embodiment of the present application second aspect, the described 4th
Correction sequence is generated by the first BBU or generated by the 2nd BBU of the second community.In this implementation, illustrate
3rd correction sequence can both have the first BBU generations, can also be generated by the 2nd BBU, add the realization of the embodiment of the present application
Mode.
In a kind of possible design, in the 4th kind of implementation of the embodiment of the present application second aspect, the transmission
To after the first BBU, the means for correcting also includes 4th correction sequence：First receiving unit, for receiving the hair
Correction coefficient and the receipts correction coefficient；Compensating unit, for according to the receipts correction coefficient and the hair correction coefficient difference
The business data feedback channel and business down going channel of the first community are compensated.In this implementation, add and received
After correction coefficient and hair correction coefficient, the passage of first community is compensated so that the embodiment of the present application logical sum step is more
Add kind.
In a kind of possible design, in the 5th kind of implementation of the embodiment of the present application second aspect, the compensation
Unit includes：First compensating module, for the up non-passage school that will be received by the business data feedback channel of the first community
Positive service signal is multiplied by the receipts correction coefficient to compensate；Second compensating module, for the first community will to be passed through
The descending subchannel correction service signal that business down going channel is sent is multiplied by the hair correction coefficient to compensate.This realization side
In formula, refine and how passage have been compensated according to receipts correction coefficient and hair correction coefficient, made the embodiment of the present application more
It is abundant, and add practical operation.
In a kind of possible design, in the 6th kind of implementation of the embodiment of the present application second aspect, described first
Correction sequence is generated by the Base Band Unit of the first community according to the mark of the first community.In this implementation, explanation
First correction sequence can generate according to the mark of first community, add the achievable mode of the embodiment of the present application.
It is described to pass through in the 7th kind of implementation of the embodiment of the present application second aspect in a kind of possible design
Before correction data feedback channel of the business down going channel of the first community to second community sends the first correction sequence, the school
Equipment also includes：Second receiving unit, first correction sequence sent for receiving the first BBU.This realization side
In formula, the first correction sequence how to obtain has been added so that the embodiment of the present application is clearer in logic.
The third aspect of the application provides a kind of computer-readable recording medium, in the computer-readable recording medium
Instruction is stored with, when run on a computer so that computer performs the method described in above-mentioned each side.
The fourth aspect of the application provides a kind of computer program product for including instruction, when it runs on computers
When so that computer performs the method described in above-mentioned each side.
As can be seen from the above technical solutions, the embodiment of the present application has advantages below：By under the business of first community
Correction data feedback channel of the row of channels to second community sends the first correction sequence；Correction received from the second community is up
Second correction sequence of passage is sent to the first BBU, to cause the first BBU according to first correction sequence and described
Two correction sequences obtain the hair correction coefficient of each business down going channel of the first community；Pass through the correction of the second community
Down going channel sends the 3rd correction sequence to the business data feedback channel of the first community, and the 3rd sequence passes through described first
It is changed into the 4th sequence during the business down going channel of cell；The 4th correction sequence is sent to the first BBU, it is described to cause
First BBU obtains each business data feedback channel of the first community according to the 3rd correction sequence and the 4th correction sequence
Receipts correction coefficient.In the embodiment of the present application, when being deployed with correction channel in a radio frequency unit, and the first community established
Interior not have correction channel, then first community can use the correction channel of the second community in same radio frequency unit to carry out school
Just, if solving present in prior art the channel allocation of radio frequency unit to different cells, there can be cell and not wrap
Lead to not the situation for carrying out channel correcting containing correction channel.
Brief description of the drawings
Figure 1A is a kind of possible application scenario diagram of prior art；
Figure 1B is a kind of possible system architecture diagram that the embodiment of the present application provides；
Fig. 2 is the embodiment schematic diagram of channel correcting method in the embodiment of the present application；
Fig. 3 is one embodiment schematic diagram of means for correcting in the embodiment of the present application；
Fig. 4 is another embodiment schematic diagram of means for correcting in the embodiment of the present application；
Fig. 5 is another embodiment schematic diagram of means for correcting in the embodiment of the present application；
Fig. 6 is a structural representation of means for correcting in the embodiment of the present application.
Embodiment
Term " first ", " second ", " the 3rd " in the description and claims of this application and above-mentioned accompanying drawing, "
The (if present)s such as four " are for distinguishing similar object, without for describing specific order or precedence.It should manage
The data that solution so uses can exchange in the appropriate case, so that the embodiments described herein can be with except illustrating herein
Or the order beyond the content of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that
Cover it is non-exclusive include, for example, containing the process of series of steps or unit, method, system, product or equipment need not limit
In those steps or unit for clearly listing, but may include not list clearly or for these processes, method, production
The intrinsic other steps of product or equipment or unit.
The embodiment of the present application can be applied to the system architecture shown in Figure 1B, and in the system architecture, multiple business are included on RRU
Interface and the communication interface being connected with BBU, in addition to correction interface.Wherein, the connection of each business interface and coupling unit
Relation is represented by four-headed arrow, is represented each business interface and is connected with receipts service channel and sending service passage；Correction interface with
The annexation of coupling unit represents also by four-headed arrow, represents correction interface and is connected with the passage for receiving transmission and sends out biography
Defeated passage, RRU realize the reception and transmission to correction reference signal by correction interface；The correction interface also with inside RRU
Correction channel connection.Signal received by business interface is sent to BBU by the communication interface being connected with BBU by RRU,
Channel correcting is carried out so that BBU receives service channel to each bar；Or the signal received by correction interface is utilized into correction channel
BBU is sent to, so that BBU carries out channel correcting to each bar sending service passage.
The embodiment of the present application provides a kind of channel correcting method and relevant device, for solving cell in the prior art
Not comprising the situation that channel correcting can not be carried out caused by correction channel.Referring to Fig. 2, introduce the embodiment of the present application passage school
The embodiment of correction method.
201st, means for correcting receives the first correction sequence that the first BBU is sent；
When some radio frequency unit while more than one cell is serviced, and is existed in the more than one cell illogical including correction
During the cell in road, for convenience of describing, the cell for not including correction channel is referred to as first community, including the cell of correction channel claims
For second community.Means for correcting receives the first correction sequence that the first BBU is sent in first community by correction interface.Need
It is bright, in practical application, the radio frequency unit can be RRU or active antenna element (active antenna unit,
AAU), do not limit herein specifically.
In addition, the first correction sequence can be generated by the first BBU by the cell ID of first community, or system
Predetermined sequence, such as first correction sequence can be micro- for Long Term Evolution (long term evolution, LTE) system, the whole world
Ripple interconnection access (worldwide interoperability for microwave access, WiMAX) system is electric
With Electronic Engineering Association (institute of electrical and electronics engineers, IEEE) 802 systems
The point Golay sequences of training sequence or reference signal sequence such as 2048 used in row agreement, thus the first correction sequence it is specific this
Place does not limit.
202nd, means for correcting sends the by correction data feedback channel of the business down going channel of first community to second community
One correction sequence；
In the present embodiment, each radio frequency unit includes multiple radio-frequency channels, also referred to as service channel, service channel and antenna
Correspond, each service channel includes a middle radio frequency and receives passage and a middle radio frequency hair passage, is respectively defined as business
Data feedback channel and business down going channel, in addition to service channel, radio frequency unit also comprises at least a correction channel to enter row of channels
Correction, wherein correction channel include a middle radio frequency and receive passage and a middle radio frequency hair passage, are respectively defined as correcting up lead to
Road and correction down going channel.And the correction of passage is divided into receiving channels calibration and transmitting channel correction, receiving channels calibration, i.e. school
Positive passage produces known correction sequence signal all the way, by coupling network, is respectively coupled to multiple receiving channels of base station,
In base station baseband processing module, the channel response of each receiving channel is estimated；The baseband processing module of transmitting channel correction, i.e. base station
Correction sequence signal known to generation, corresponding each data channel send correction sequence signal, the correction sequence between each passage
Column signal is needed to make a distinction, such as each channel correcting sequence is respectively mapped in different subcarrier in frequency domain, passes through coupling
Network is closed, analog signal all the way is merged into, via correction channel, gives base band, characteristics of signals is each as known to utilizing base band
The channel response of transmission channel estimates.Base station is obtaining uplink receiving, the descending width for sending row of channels, different sub-carrier
After phase behaviour, inconsistency the inconsistency progress between descending sendaisle can be compensated between base band uplink receiving channel
Compensation, interchannel time delay inconsistency can also be compensated therewith.
After means for correcting receives the first correction sequence of the first BBU transmissions, to the first correction sequence received from the first BBU
Row carry out upstream digital processing, the upstream digitalization processing include first correction sequence is carried out successively at equal intervals interpolation,
Digital filtering, IQ modulation and digital-to-analogue conversion process, pass through coupling network point by the first correction sequence that upstream digitalization is handled
It is not coupled to each business down going channel of first community, then is sent out via each business down going channel of first community by correcting port
The correction data feedback channel of second community is delivered to, the change of phase, amplitude, time delay etc. can occur when wherein signal passes through service channel
Change, therefore the first correction sequence reaches and is changed into the second correction sequence when correcting data feedback channel.
203rd, the second correction sequence of the correction down going channel received from second community is sent to first by means for correcting
BBU；
Each business down going channel of first community corresponds to second correction sequence respectively, and between each business down going channel
The second correction sequence need make a distinction, the second correction sequence corresponding to each business down going channel can be respectively mapped to not
Same subcarrier in frequency domain, by coupling network, is merged into analog signal all the way, the correction down going channel by second community is by school
Equipment receives, and is then forwarded to the first BBU so that the first BBU calculates the hair correction coefficient of each business down going channel.
204th, the first BBU obtains each business down going channel of first community according to the first correction sequence and the second correction sequence
Hair correction coefficient；
First BBU is received corresponding to each business down going channel of means for correcting transmission after the second correction sequence, according to the
Second correction sequence corresponding to one correction sequence and each business down going channel calculates the hair correction coefficient of each business down going channel, its
Middle hair correction coefficient is corresponding with other transmission hair correction sequences to send the channel response of the first reference channel of hair correction sequence
The ratio of channel response of passage (such as the second correction sequence signal is transformed from the time domain into frequency domain, then carries out least square
(LS) passage is estimated, estimates interpolation to the passage of direct current subcarrier, calculates passage SINR, least square (LS) passage is estimated into
Row subcarrier is extrapolated, and enters row interpolation to the passage estimate of each antenna, and the passage for finally estimating each sendaisle rings
Should), and the first reference channel is contained in the business down going channel of first community.It is understood that in practical application, the first ginseng
Examine the selection mode of passage have it is a variety of, such as can be by reception signal in antenna corresponding to each business down going channel of first community
Intensity either the business down going channel corresponding to best one antenna of signal quality as the first reference channel or by passage
Minimum business down going channel is numbered as the first reference channel, therefore the selection mode of the first reference channel does not limit specifically herein
It is fixed.
Equation below 1 can be used by wherein calculating sendaisle response：
htx=R/ | S |2, wherein htxIt is the channel response of business down going channel to represent sendaisle, and R is the correction received
Sequence signal is the second correction sequence, and S is that the known correction sequence signal sent is the first correction sequence.Can by the formula
To estimate the response of the sendaisle in different passage different sub-carriers, then obtain the ratio with the response of the sendaisle of reference channel
Value, obtains the hair correction coefficient in each different passage different sub-carriers so that the hair correction system of different passage different sub-carriers
Number meets equation below 2：
hTx, 0=α1*hTx, 0=αi*htx, i=...=α(N-1)*hTx, (N-1)；
For ease of distinguishing each business down going channel, each business down going channel is numbered, if there is N number of business descending logical
Road, then it is 0,1,2 to number it respectively ..., N-1；Assuming that business down going channel 0 is with reference to sendaisle, then above-mentioned public affairs
In formula, hTx, 0The channel response with reference to sendaisle is represented, is first with reference to logical with reference to sendaisle in the embodiment of the present application
Road, hTx, 1、hTx, 1Business down going channel 1, i channel response are represented respectively, i value is [0, N-1], and β is hair correction coefficient,
Then β1The hair correction coefficient of expression business down going channel 1, βiExpression business down going channel i hair correction coefficient, β(N-1)Represent industry
The hair correction coefficient of business down going channel (N-1).
First BUU after the channel response of each business down going channel is calculated, can be counted by formula 1 by formula 2
The hair correction coefficient of each business down going channel is calculated, such as：
The hair correction coefficient of business down going channel 1：β1=hTx, 0/hTx, 1；
The hair correction coefficient of business down going channel 2：β2=hTx, 0/hTx, 2；
Business down going channel i hair correction coefficient：βi=hTx, 0/hTx, i；
The hair correction coefficient of business down going channel (N-1)：β(N-1)=hTx, 0/hTx, (N-1)。
205th, means for correcting sends the by the correction down going channel of second community to the business data feedback channel of first community
Three correction sequences；
Means for correcting receives the 3rd correction sequence of the 2nd BBU from second community, and to the 3rd correction sequence
Downstream digital processing is carried out, downstream digitalization processing includes carrying out the 3rd correction sequence according to this analog-to-digital conversion, IO tune
System, value and digital filtering process are taken out at equal intervals.The 3rd correction sequence handled by downstream digitalization is distinguished by coupling network
It is coupled to each business data feedback channel of first community, then correction port is sent to via each business data feedback channel of first community,
The change of phase, amplitude, time delay etc. can occur when wherein signal passes through service channel, therefore the 3rd correction sequence reaches correction port
The correction sequences of Shi Bianwei the 4th.
It should be noted that getting for the 3rd correction sequence is similar with getting for the first correction sequence, such as the 3rd correction
Sequence is generated by the cell ID of first community or second community, or system intialization sequence, such as the 3rd correction
Sequence can be the training sequence or reference signal sequence example used in LTE system, WiMAX system or IEEE802 serial protocols
Such as 2048 point Golay sequences, therefore the 3rd correction sequence does not limit specifically herein.It is understood that the first correction sequence with
3rd correction sequence be able to can also be differed with identical, specifically good herein to limit.
In addition, when the 3rd correction sequence is generated by the 2nd BUU, then the 2nd BUU sends out the 3rd correction sequence of generation
The first BUU is given, to cause the first BUU to obtain receipts correction coefficient according to the 3rd correction sequence；When the 3rd correction sequence is by
When one BUU is generated, then the 3rd correction sequence of generation is sent to the 2nd BUU by the first BUU, to carry out school by correction channel
Just.
206th, means for correcting sends the 4th correction sequence to the first BBU；
In the present embodiment, step 206 is similar with step 203, and here is omitted.
207th, the first BBU obtains each business data feedback channel of first community according to the 3rd correction sequence and the 4th correction sequence
Receipts correction coefficient；
First BBU is received corresponding to each business data feedback channel of means for correcting transmission after the 4th correction sequence, according to the
4th correction sequence corresponding to three correction sequences and each business down going channel calculates the receipts correction coefficient of each business data feedback channel, its
It is corresponding that correction sequence is received in the middle channel response for receiving the second reference channel that correction coefficient is reception receipts correction sequence and other receptions
The ratio of channel response of passage (such as the 4th correction sequence signal is transformed from the time domain into frequency domain, then carries out least square
(LS) passage is estimated, estimates interpolation to the passage of direct current subcarrier, calculates passage SINR, least square (LS) passage is estimated into
Row subcarrier is extrapolated, and enters row interpolation to the passage estimate of each antenna, and the passage for finally estimating each sendaisle rings
Should), and the second reference channel is contained in the business data feedback channel of first community.It is understood that in practical application, the second ginseng
Examine the selection mode of passage have it is a variety of, such as can be by reception signal in antenna corresponding to each business data feedback channel of first community
Intensity either the business data feedback channel corresponding to best one antenna of signal quality as the second reference channel or by passage
Minimum business data feedback channel is numbered as the second reference channel, therefore the selection mode of the second reference channel does not limit specifically herein
It is fixed.
Equation below 3 can be used by wherein calculating receiving channel response：
hrx=R/ | S |2,
Wherein hrxRepresent sendaisle be business down going channel channel response, R be the correction sequence signal received i.e.
4th correction sequence, S are that known correction sequence signal is the 3rd correction sequence.Different passages are estimated that by the formula
Receiving channel response in different sub-carrier, then the ratio with the response of the receiving channel of reference channel is obtained, obtain each difference
Receipts correction coefficient in passage different sub-carrier so that the receipts correction coefficient of different passage different sub-carriers meets equation below 4：
hRx, 0=α1*hRx, 0=αi*hrx, i=...=α(N-1)*hRx, (N-1)；
For ease of distinguishing each business down going channel, each business data feedback channel is numbered, if there is N number of business up logical
Road, then it is 0,1,2 to number it respectively ..., N-1；Assuming that business data feedback channel 0 is with reference to sendaisle, then above-mentioned public affairs
In formula, hRx, 0The channel response with reference to receiving channel is represented, is second with reference to logical with reference to receiving channel in the embodiment of the present application
Road, hRx, 1、hRx, 1Business data feedback channel 1, i channel response are represented respectively, i value is [0, N-1], and α is receipts correction coefficient,
Then α1The receipts correction coefficient of expression business data feedback channel 1, αiExpression business data feedback channel i receipts correction coefficient, α(N-1)Represent industry
The receipts correction coefficient of business data feedback channel (N-1).
First BUU after the channel response of each business data feedback channel is calculated, can be counted by formula 3 by formula 4
The receipts correction coefficient of each business data feedback channel is calculated, such as：
The hair correction coefficient of business data feedback channel 1：α1=hRx, 0/hRx, 1；
The hair correction coefficient of business data feedback channel 2：α2=hRx, 0/hRx, 2；
Business data feedback channel i hair correction coefficient：αi=hRx, 0/hRx,i；
The hair correction coefficient of business data feedback channel (N-1)：α(N-1)=hRx, 0/hRx, (N-1)。
It should be noted that in the embodiment of the present application, each business of first community can be obtained by step 201 to 204
The hair correction coefficient of down going channel, the receipts correction of each business data feedback channel of first community can be obtained by step 205 to 207
Coefficient, and between the two processes and in the absence of the sequencing of step, step 201 can be first carried out to 204, can also first be held
Row step 205 does not limit specifically herein to 207.
208th, means for correcting receives hair correction coefficient and receives correction coefficient；
The hair correction coefficient of each business down going channel of first community and each business data feedback channel is calculated in first BBU
After receiving correction coefficient, both are sent to means for correcting, to be corrected to each business down going channel and each business data feedback channel.
209th, means for correcting according to receive correction coefficient and hair correction coefficient respectively the business data feedback channel to first community and
Business down going channel compensates.
Means for correcting receives the hair correction coefficient of each business down going channel of first community and each business data feedback channel
After receiving correction coefficient, the up non-channel correcting service signal received by the business data feedback channel of the first community is multiplied by receipts
Correction coefficient is to compensate；The descending non-channel correcting service signal sent by the business down going channel of first community is multiplied
To send out correction coefficient to compensate.
It should be noted that if the cell established only is configured using during subchannel, i.e., this is small inside a radio frequency unit
The radio frequency unit port number of area's configuration is less than the normally functioning physical channel number of the radio frequency unit hardware, but the cell configuration
There is the correction channel in radio frequency unit, then the hardware corridor that the cell preference is included using this cell, such cell passage
Correcting process is identical with configuring normal radio frequency unit overall flow in the prior art, does not specifically describe herein.But work as and be somebody's turn to do
The correction channel failure or the cell of cell do not configure correction channel, but when whole radio frequency unit has available correction channel,
As described in the embodiment of the present application, the correction channels of other cells that the radio frequency unit equally services just can be used to carry out in the cell
The correction of service channel.It is understood that the embodiment of the present application is applied to multiple application scenarios, for example, school can not configured
The cell of positive passage and the cell progress timesharing correction for being configured with correction channel, i.e., the cell for not configuring correction channel can be with advanced
Row of channels corrects, the cell advanced row of channels correction for being either configured with correction channel or the cell that does not configure correction channel with
It is configured with the cell of correction channel while carries out channel correcting, if or is configured with the passage of cell of correction channel and not being activated
When, be configured with the cell of correction channel still can be corrected based on its correction channel, or to not configuring correction channel
Cell, additionally configure correction channel (this correction channel additionally configured only uses for correction), that is, the passage for the cell established
Number is more more than link antenna number, but additional passage is correction channel, or, to not configuring the cell of correction channel, if matching somebody with somebody
When having put the cell of correction channel and being not present or do not set up completion, can by the correction channel dispensing inside whole radio frequency unit this not
The cell of correction channel is configured to carry out channel correcting, such as 4T4R does not have correction channel cell to establish correction 8T8R cells, its
The actual transmitting-receiving of business datum is 4T4R cells, but in channel correcting flow, handle according to 8T8R cells, can so make
With the cell for not configuring correction channel was configured without originally and correction channel that whole equipment has.Therefore do not limit herein specifically
It is fixed.
In the embodiment of the present application, when being deployed with correction channel in a radio frequency unit, and do not have in the first community established
There is correction channel, then first community can use the correction channel of the second community in same radio frequency unit to be corrected, and solve
If having determined present in prior art the channel allocation of radio frequency unit to different cells, there can be cell and not include correction
Passage and lead to not carry out channel correcting situation.
Channel correcting method in the embodiment of the present application is described above, below to the correction in the embodiment of the present application
Device is described, referring to Fig. 3, one embodiment of the embodiment of the present application means for correcting includes：
First transmitting element 301 is up logical for correction of the business down going channel by first community to second community
Road sends the first correction sequence, and first correction sequence is changed into the second correction sequence, institute when reaching the correction data feedback channel
State the passage of first community and the passage of the second community is contained in same radio frequency unit；
Second transmitting element 302, for by received from the second community correction data feedback channel the second correction sequence
The first BBU is sent to, to cause the first BBU according to obtaining first correction sequence and second correction sequence
The hair correction coefficient of each business down going channel of first community；
3rd transmitting element 303, for correction industry of the down going channel to the first community by the second community
Data feedback channel of being engaged in sends the 3rd correction sequence, and the 3rd sequence is by being changed into the during the business down going channel of the first community
Four sequences；
4th transmitting element 304, for sending the 4th correction sequence to the first BBU, to cause described first
BBU obtains the receipts of each business data feedback channel of the first community according to the 3rd correction sequence and the 4th correction sequence
Correction coefficient.
For ease of understanding, the means for correcting in the embodiment of the present application is described in detail below, shown in above-mentioned Fig. 3
On the basis of, referring to Fig. 4, Fig. 4 is another embodiment schematic diagram of means for correcting in the embodiment of the present application, means for correcting bag
Include：First transmitting element 401, the second transmitting element 402, the 3rd transmitting element 403 and the 4th transmitting element 404.
Optionally, means for correcting can further comprise：
First receiving unit 405, for receiving the hair correction coefficient and the receipts correction coefficient；
Compensating unit 406, for according to it is described receipts correction coefficient and it is described hair correction coefficient respectively to the first community
Business data feedback channel and business down going channel compensate.
Optionally, compensating unit 406 can further comprise：
First compensating module 4061, for the up non-passage that will be received by the business data feedback channel of the first community
Correction signal is multiplied by the receipts correction coefficient to compensate；
Second compensating module 4062, for the descending non-passage that will be sent by the business down going channel of the first community
Correction signal is multiplied by the hair correction coefficient to compensate.
Optionally, means for correcting can further comprise：
Second receiving unit 407, first correction sequence sent for receiving the first BBU.
Above figure 3 to the angle of Fig. 4 slave module functional entitys carries out detailed to means for correcting in the embodiment of the present application respectively
Thin description, means for correcting in the embodiment of the present application is described in detail from the angle of hardware handles below.
Fig. 5 is a kind of structural representation for the means for correcting that the embodiment of the present application provides, with reference to figure 5.Using what is integrated
In the case of unit, Fig. 5 shows a kind of possible structural representation of means for correcting involved in above-described embodiment.Correction
Device 500 includes：Processing unit 502 and communication unit 503.The action that processing unit 502 is used for means for correcting is controlled
Management, for example, processing unit 502 is used to support means for correcting to perform the step 209 in Fig. 2, and/or for described herein
Other processes of technology.Communication unit 503 is used for the communication for supporting means for correcting and other devices.Means for correcting can also include
Memory cell 501, for storing the program code and data of means for correcting.
Wherein, processing unit 502 can be processor or controller, such as can be central processing unit (central
Processing unit, CPU), general processor, digital signal processor (digital signal processor, DSP),
Application specific integrated circuit (application-specific integrated circuit, ASIC), field programmable gate array
It is (field programmable gate array, FPGA) or other PLDs, transistor logic, hard
Part part or its any combination.What it can realize or perform with reference to described by present disclosure various exemplary patrols
Collect square frame, module and circuit.Processor can also be the combination for realizing computing function, such as include one or more microprocessors
Combination, combination of DSP and microprocessor etc..Communication unit 503 can be communication interface, transceiver, transmission circuit etc., its
In, communication interface is to be referred to as, and can include one or more interfaces, such as transceiver interface.Memory cell 501 can be storage
Device.
When processing unit 502 is processor, communication unit 503 is communication interface, when memory cell 501 is memory, this
It can be the means for correcting shown in Fig. 6 to apply for the equipment involved by embodiment.
As shown in fig.6, the means for correcting 610 includes：Processor 612, communication interface 613, memory 611.Optionally,
Equipment 610 can also include bus 614.Wherein, communication interface 613, processor 612 and memory 611 can pass through bus
614 are connected with each other；Bus 614 can be Peripheral Component Interconnect standard (peripheral component interconnect,
PCI) bus or EISA (extended industry standard architecture, EISA) bus
Deng.Bus 614 can be divided into address bus, data/address bus, controlling bus etc..For ease of representing, only with a thick line table in Fig. 6
Show, it is not intended that an only bus or a type of bus.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or its any combination real
It is existing.When implemented in software, can realize in the form of a computer program product whole or in part.
The computer program product includes one or more computer instructions.Load and perform on computers the meter
During calculation machine programmed instruction, produce whole or in part according to the flow or function described in the embodiment of the present application.The computer can
To be all-purpose computer, special-purpose computer, computer network or other programmable devices.The computer instruction can be deposited
Store up in a computer-readable storage medium, or from a computer-readable recording medium to another computer-readable recording medium
Transmission, for example, the computer instruction can pass through wired (example from a web-site, computer, server or data center
Such as coaxial cable, optical fiber, Digital Subscriber Line (digital subscriber line, DSL)) or wireless (such as infrared, wireless,
Microwave etc.) mode is transmitted to another web-site, computer, server or data center.It is described computer-readable to deposit
Storage media can be any usable medium that computer can store or the clothes integrated comprising one or more usable mediums
The data storage devices such as business device, data center.The usable medium can be magnetic medium, (for example, floppy disk, hard disk, tape),
Optical medium (for example, DVD) or semiconductor medium (such as solid state hard disc (solid state disk, SSD)) etc..
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of equipment and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, apparatus embodiments described above are only schematical, for example, the unit
Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, equipment or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in the embodiment of the present application can be integrated in a processing unit or each
Individual unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated unit was both
It can be realized, can also be realized in the form of SFU software functional unit in the form of hardware.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, the technical scheme of the application is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the application
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (read-only memory,
ROM), random access memory (random access memory, RAM), magnetic disc or CD etc. are various can be with storage program
The medium of code.
Described above, above example is only to illustrate the technical scheme of the application, rather than its limitations；Although with reference to before
Embodiment is stated the application is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of each embodiment technical scheme of the application.
It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description,
The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.
In several embodiments provided herein, it should be understood that disclosed system, apparatus and method can be with
Realize by another way.For example, device embodiment described above is only schematical, for example, the unit
Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing
Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or
The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit
Close or communicate to connect, can be electrical, mechanical or other forms.
The unit illustrated as separating component can be or may not be physically separate, show as unit
The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs
's.
In addition, each functional unit in each embodiment of the application can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, the technical scheme of the application is substantially
The part to be contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are causing a computer
Equipment (can be personal computer, server, or network equipment etc.) performs the complete of each embodiment methods described of the application
Portion or part steps.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
Described above, above example is only to illustrate the technical scheme of the application, rather than its limitations；Although with reference to before
Embodiment is stated the application is described in detail, it will be understood by those within the art that：It still can be to preceding
State the technical scheme described in each embodiment to modify, or equivalent substitution is carried out to which part technical characteristic；And these
Modification is replaced, and the essence of appropriate technical solution is departed from the spirit and scope of each embodiment technical scheme of the application.
Claims (18)
- A kind of 1. channel correcting method, it is characterised in that including：First correction sequence is sent by correction data feedback channel of the business down going channel of first community to second community, described the One correction sequence is changed into the second correction sequence, the passage of the first community and described second when reaching the correction data feedback channel The passage of cell is contained in same radio frequency unit；Second correction sequence of the correction data feedback channel received from the second community is sent to the first BBU, it is described to cause First BBU obtains each business down going channel of the first community according to first correction sequence and second correction sequence Hair correction coefficient；3rd correction sequence is sent to the business data feedback channel of the first community by the correction down going channel of the second community Row, the 3rd sequence during business down going channel of the first community by being changed into the 4th sequence；The 4th correction sequence is sent to the first BBU, to cause the first BBU according to the 3rd correction sequence and 4th correction sequence obtains the receipts correction coefficient of each business data feedback channel of the first community.
- 2. channel correcting method according to claim 1, it is characterised in that the hair correction coefficient corrects sequence to send hair The ratio of the channel response of the channel response of first reference channel of row passage corresponding with sending hair correction sequence other described, First reference channel is contained in each business down going channel of the first community.
- 3. channel correcting method according to claim 1, it is characterised in that the receipts correction coefficient receives correction sequence to receive The ratio of the channel response of the channel response of second reference channel of row passage corresponding with receiving receipts correction sequence other described, Second reference channel is contained in the business data feedback channel of the first community.
- 4. channel correcting method according to claim 1, it is characterised in that the 3rd correction sequence is by described first BBU is generated or generated by the 2nd BBU of the second community.
- 5. channel correcting method according to claim 1, it is characterised in that the 4th correction sequence of the transmission to described the After one BBU, methods described also includes：Receive the hair correction coefficient and the receipts correction coefficient；According to the receipts correction coefficient and the hair correction coefficient respectively to the business data feedback channel and business of the first community Down going channel compensates.
- 6. channel correcting method according to claim 5, it is characterised in that described according to the receipts correction coefficient and described Hair correction coefficient respectively the business data feedback channel to the first community and business down going channel compensate including：The up non-channel correcting service signal received by the business data feedback channel of the first community is multiplied by the receipts school Positive coefficient is to compensate；The descending non-channel correcting service signal sent by the business down going channel of the first community is multiplied by the hair school Positive coefficient is to compensate.
- 7. channel correcting method according to any one of claim 1 to 6, it is characterised in that first correction sequence Generated by the Base Band Unit of the first community according to the mark of the first community.
- 8. channel correcting method according to any one of claim 1 to 6, it is characterised in that described to pass through described first Before correction data feedback channel of the business down going channel of cell to second community sends the first correction sequence, methods described is also wrapped Include：Receive first correction sequence that the first BBU is sent.
- A kind of 9. means for correcting, it is characterised in that including：First transmitting element, the is sent for correction data feedback channel of the business down going channel by first community to second community One correction sequence, first correction sequence are changed into the second correction sequence when reaching the correction data feedback channel, and described first is small The passage in area and the passage of the second community are contained in same radio frequency unit；Second transmitting element, for the second correction sequence of the correction data feedback channel received from the second community to be sent into One BBU, to cause the first BBU to obtain the first community according to first correction sequence and second correction sequence Each business down going channel hair correction coefficient；3rd transmitting element is up logical to the business of the first community for the correction down going channel by the second community Road sends the 3rd correction sequence, and the 3rd sequence during business down going channel of the first community by being changed into the 4th sequence；4th transmitting element, for sending the 4th correction sequence to the first BBU, with cause the first BBU according to 3rd correction sequence and the 4th correction sequence obtain the receipts correction system of each business data feedback channel of the first community Number.
- 10. means for correcting according to claim 9, it is characterised in that the hair correction coefficient sends out correction sequence to send The first reference channel corresponding to channel response of the channel response with sending the corresponding passage of hair correction sequence other described ratio Value, first reference channel are contained in each business down going channel of the first community.
- 11. means for correcting according to claim 9, it is characterised in that the receipts correction coefficient receives correction sequence to receive The second reference channel corresponding to ratio of the channel response with receiving the channel response for receiving the corresponding passage of correction sequence other described Value, second reference channel are contained in each business data feedback channel of the first community.
- 12. means for correcting according to claim 9, it is characterised in that the 4th correction sequence is given birth to by the first BBU Into or by the second community the 2nd BBU generation.
- 13. means for correcting according to claim 9, it is characterised in that the 4th correction sequence of the transmission to described first After BBU, the means for correcting also includes：First receiving unit, for receiving the hair correction coefficient and the receipts correction coefficient；Compensating unit, for according to it is described receipts correction coefficient and it is described hair correction coefficient respectively to the business of the first community Row of channels and business down going channel compensate.
- 14. means for correcting according to claim 13, it is characterised in that the compensating unit includes：First compensating module, for the up non-channel correcting business that will be received by the business data feedback channel of the first community Signal is multiplied by the receipts correction coefficient to compensate；Second compensating module, for the descending non-channel correcting business that will be sent by the business down going channel of the first community Signal is multiplied by the hair correction coefficient to compensate.
- 15. the means for correcting according to any one of claim 9 to 14, it is characterised in that first correction sequence by The Base Band Unit of the first community generates according to the mark of the first community.
- 16. the means for correcting according to any one of claim 9 to 14, it is characterised in that described small by described first Before correction data feedback channel of the business down going channel in area to second community sends the first correction sequence, the means for correcting also wraps Include：Second receiving unit, first correction sequence sent for receiving the first BBU.
- 17. a kind of computer-readable recording medium, including instruction, when run on a computer so that computer performs such as Method described in claim 1-8 any one.
- 18. a kind of computer program product for including instruction, when run on a computer so that computer performs such as right It is required that the method described in 1-8 any one.
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| WO2022135225A1 (en) * | 2020-12-21 | 2022-06-30 | 中兴通讯股份有限公司 | Method for correcting antennas in cell, electronic device, and storage medium |
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