CN103905353B - The method and apparatus that joint channel is corrected between a kind of RRU - Google Patents
The method and apparatus that joint channel is corrected between a kind of RRU Download PDFInfo
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Abstract
The embodiment of the present invention provides a kind of method and apparatus of joint channel correction between RRU, methods described is by revealing cable, carry out the joint channel correction between outer correction type or interior correction type RRU, so that the hair correction coefficient of the different RRU hair passage is multiplied by the value of the channel response of corresponding hair passage, the ratio that the value of the channel response of corresponding receipts passage is multiplied by with the same receipts correction coefficient for receiving passage is identical, the problem of solving channel correcting between multiple cells, to meet requirements of the JT to passage reciprocity.
Description
Technical field
The invention belongs to the method and apparatus that joint channel between the communications field, more particularly to a kind of RRU is corrected.
Background technology
In time division duplex（Time Division Duplexing, TDD）In system, base station is by detecting user (User
Equipment, UE) send detection reference signal（Sounding Reference Signal, SRS）Signal, to up channel
Estimated, and using the reciprocity of TDD system up-downgoing, wave beam tax is carried out using the up channel estimated as down channel
Shape.Although TDD system is in theory, up-downgoing is reciprocity, in systems in practice, and up-downgoing channel introduces base station respectively
Different radio-frequency channels, the response of these radio-frequency channels is different, and this is accomplished by logical to these by the means of channel correcting
Road is compensated.Found by theory analysis, it is only necessary to which the ratio of the corresponding uplink/downlink radio-frequency channel of each antenna is equal to together
One value, it is possible to meet the requirement of wave beam forming.The existing maturation method of channel correcting of current single subdistrict.
Coordinate multipoint (Coordinated Multi-Point, CoMP) is Long Term Evolution plan (Long Term
Evolution, LTE) a key characteristic, the interference problem of LTE cell edges can be effectively antagonized using CoMP technologies.JT
(belonging to JP, a Joint Process type in Joint Transmission, CoMP), technology was used as the one of CoMP technologies
Kind, cell edge and average throughput can be significantly improved.In order in a tdd system, realize that joint is sent（Joint
Transmission, JT）The gain that technology is brought, needs also exist for carrying out channel correcting.It is different from single cells beam figuration technology
, JT technologies need the ratio of the corresponding up-downgoing radio-frequency channel channel response of multiple each antenna of cell identical.Even if each
Individual cell has carried out channel correcting respectively, if not done by the correction of minizone, and JT technologies still can not reach desired property
Energy.
The content of the invention
The purpose of the embodiment of the present invention is to provide the method that joint channel between a kind of RRU is corrected, and solves between multiple RRU
The problem of channel correcting, to meet requirements of the JT to passage reciprocity.
In a first aspect, a kind of method that joint channel is corrected between RRU, methods described includes：
Corrected by revealing the joint channel between the different RRU of cable progress so that the hair correction coefficient between different RRU
The value of the channel response of corresponding hair passage is multiplied by, the receipts correction coefficient between the different RRU is multiplied by corresponding receipts
The ratio of the value of the channel response of passage is identical.
It is described to be carried out by revealing cable with reference in a first aspect, in the first possible implementation of first aspect
Joint channel correction between different RRU, including：
Same RRU obtains hair correction coefficient and receives correction coefficient so that same RRU's by the method for self-correcting
It is described hair correction coefficient be multiplied by it is corresponding hair passage channel response value, and the same RRU the receipts correction coefficient
The ratio for being multiplied by the value of the channel response of corresponding receipts passage is identical；
The RRU is corrected by the joint channel between revealing two RRU of cable progress；
Two RRU after correction are regarded as to the RRU of an entirety, carry out combining logical with the 3rd RRU by revealing cable
Channel correction；
Three RRU after correction are regarded as to the RRU of an entirety, carry out combining logical with the 4th RRU by revealing cable
Channel correction, the rest may be inferred, is corrected by revealing the joint channel between the different RRU of cable completion.
It is described to be carried out by revealing cable with reference in a first aspect, in second of possible implementation of first aspect
Joint channel correction between different RRU, including：
Choose the reference RRU that any one RRU in the different RRU is corrected as joint channel；
The different RRU make joint channel correction by revealing cable with any one RRU described in selection.
Second with reference to the first possible implementation or first aspect of first aspect or first aspect can
The implementation of energy, in the third possible implementation of first aspect, methods described also includes：
Different RRU carry out the joint channel correction between interior correction type or outer correction type RRU by revealing cable.
With reference to the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect
In, the different RRU carry out the joint channel correction between outer correction type RRU by revealing cable, including：
For the outer correction, because correction reference channel and coupling disc, or correction coupling function module use radio frequency
Cable is connected, and the radio-frequency cable is replaced by into leakage cable, carries out the joint channel correction between RRU.
With reference to the third possible implementation of first aspect, in the 5th kind of possible implementation of first aspect
In, the different RRU carry out the joint channel correction between interior correction type or outer correction type RRU, wrapped by revealing cable
Include：
In order to complete the correction of the joint channel between multiple interior correction RRU, change RRU root service channels and be connected with antenna
Radio-frequency cable for leakage cable, carry out RRU between joint channel correction.
A kind of method that joint channel is corrected between second aspect, RRU, methods described includes：
The joint channel carried out by transmission medium between different RRU is corrected, and the transmission medium is corrected for transmission channel
Reference signal so that the hair correction coefficient between different RRU is multiplied by the value of the channel response of corresponding hair passage, and described
The ratio that the receipts correction coefficient between different RRU is multiplied by the value of the channel response of corresponding receipts passage is identical.
It is described to be carried out by transmission medium in the first possible implementation of second aspect with reference to second aspect
Joint channel correction between different RRU, including：
Same RRU obtains hair correction coefficient and receives correction coefficient so that same RRU's by the method for self-correcting
It is described hair correction coefficient be multiplied by it is corresponding hair passage channel response value, and the same RRU the receipts correction coefficient
The ratio for being multiplied by the value of the channel response of corresponding receipts passage is identical；
The joint channel that the RRU is carried out by transmission medium between two RRU is corrected；
Two RRU after correction are regarded to the RRU of an entirety as, carrying out joint with the 3rd RRU by transmission medium leads to
Channel correction；
Three RRU after correction are regarded to the RRU of an entirety as, carrying out joint with the 4th RRU by transmission medium leads to
Channel correction, the rest may be inferred, and the joint channel completed by transmission medium between different RRU is corrected.
It is described to be carried out by transmission medium in second of possible implementation of second aspect with reference to second aspect
Joint channel correction between different RRU, including：
Choose the reference RRU that any one RRU in the different RRU is corrected as joint channel；
The different RRU make joint channel correction by transmission medium with any one RRU described in selection.
Second with reference to the first possible implementation or second aspect of second aspect or second aspect can
The implementation of energy, in the third possible implementation of second aspect, methods described also includes：
Different RRU carry out the joint channel correction between interior correction type or outer correction type RRU by transmission medium.
With reference to the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect
In, the different RRU carry out the joint channel correction between outer correction type RRU by transmission medium, including：
For the outer correction, because correction reference channel and coupling disc, or correction coupling function module use radio frequency
Cable is connected, and the radio-frequency cable is replaced by into transmission medium, carries out the joint channel correction between RRU.
With reference to the third possible implementation of second aspect, in the 5th kind of possible implementation of second aspect
In, the different RRU are carried out the joint channel correction between interior correction type or outer correction type RRU, wrapped by transmission medium
Include：
In order to complete the correction of the joint channel between multiple interior correction RRU, change RRU root service channels and be connected with antenna
Radio-frequency cable be transmission medium, carry out RRU between joint channel correction.
A kind of equipment that joint channel is corrected between the third aspect, RRU, the equipment includes：
First joint channel corrects unit, for being corrected by revealing the joint channel between the different RRU of cable progress so that
The hair correction coefficient between different RRU is multiplied by the value of the channel response of corresponding hair passage, the institute between the different RRU
The ratio for stating the value for receiving the channel response that correction coefficient is multiplied by corresponding receipts passage is identical.
With reference to the third aspect, in the first possible implementation of the third aspect, the first joint channel correction
Unit, including：
Self-level unit, for methods of the same RRU by self-correcting, obtains hair correction coefficient and receives correction coefficient,
So that the same RRU hair correction coefficient is multiplied by the value of the channel response of corresponding hair passage, and the same RRU
The ratio for receiving the value that correction coefficient is multiplied by the corresponding channel response for receiving passage is identical；
Joint channel corrects unit, is corrected for the RRU by the joint channel between revealing two RRU of cable progress；
First associated units, the RRU for two RRU after correction to be regarded as to an entirety, by revealing cable with
Three RRU carry out joint channel correction；
Second associated units, the RRU for three RRU after correction to be regarded as to an entirety, by revealing cable with
Four RRU carry out joint channel correction, and the rest may be inferred, are corrected by revealing the joint channel between the different RRU of cable completion.
With reference to the third aspect, in second of possible implementation of the third aspect, the first joint channel correction
Unit, including：
Unit is chosen, for choosing the reference RRU that any one RRU in the different RRU is corrected as joint channel；
3rd associated units, make to combine by revealing cable for the different RRU with any one RRU described in selection
Channel correcting.
Second with reference to the first possible implementation or the third aspect of the third aspect or the third aspect can
The implementation of energy, in the third possible implementation of the third aspect, it is logical that the network equipment also includes the second joint
Channel correction unit：
Second joint channel corrects unit, for different RRU by revealing cable, carries out interior correction type or outer
Correct the joint channel correction between type RRU.
With reference to the third possible implementation of the third aspect, in the 4th kind of possible implementation of the third aspect
In, second joint channel corrects unit, for for the outer correction, due to correction reference channel and coupling disc, or
Correct coupling function module using radio-frequency cable to be connected, the radio-frequency cable is replaced by leakage cable, carry out the joint between RRU
Channel correcting.
With reference to the third possible implementation of the third aspect, in the 5th kind of possible implementation of the third aspect
In, second joint channel corrects unit, in order to complete the correction of the joint channel between multiple RRU, changing RRU roots
The radio-frequency cable that service channel is connected with antenna is leakage cable, carries out the joint channel correction between RRU.
A kind of equipment that joint channel is corrected between fourth aspect, RRU, the equipment includes：
First joint channel corrects unit, described for carrying out the correction of the joint channel between different RRU by transmission medium
Transmission medium is used for the reference signal that transmission channel is corrected so that the hair correction coefficient between different RRU is multiplied by corresponding hair
The channel that the receipts correction coefficient between the value of the channel response of passage, and the different RRU is multiplied by corresponding receipts passage rings
The ratio for the value answered is identical.
With reference to fourth aspect, in the first possible implementation of fourth aspect, the first joint channel correction
Unit, including：
Self-level unit, for methods of the same RRU by self-correcting, obtains hair correction coefficient and receives correction coefficient,
So that the same RRU hair correction coefficient is multiplied by the value of the channel response of corresponding hair passage, and the same RRU
The ratio for receiving the value that correction coefficient is multiplied by the corresponding channel response for receiving passage is identical；
Joint channel corrects unit, and the joint channel carried out for the RRU by transmission medium between two RRU is corrected；
First associated units, the RRU for two RRU after correction to be regarded as to an entirety, by transmission medium with
Three RRU carry out joint channel correction；
Second associated units, the RRU for three RRU after correction to be regarded as to an entirety, by transmission medium with
Four RRU carry out joint channel correction, and the rest may be inferred, and the joint channel completed by transmission medium between different RRU is corrected.
With reference to fourth aspect, in second of possible implementation of fourth aspect, the first joint channel correction
Unit, including：
Unit is chosen, for choosing the reference RRU that any one RRU in the different RRU is corrected as joint channel；
3rd associated units, make to combine for the different RRU by transmission medium with any one RRU described in selection
Channel correcting.
Second with reference to the first possible implementation or fourth aspect of fourth aspect or fourth aspect can
The implementation of energy, in the third possible implementation of fourth aspect, the equipment also includes the second joint channel school
Positive unit：
Second joint channel corrects unit, for different RRU by transmission medium, carries out interior correction type or outer
Correct the joint channel correction between type RRU.
With reference to the third possible implementation of fourth aspect, in the 4th kind of possible implementation of fourth aspect
In, second joint channel corrects unit, for for the outer correction, due to correction reference channel and coupling disc, or
Correct coupling function module using radio-frequency cable to be connected, the radio-frequency cable is replaced by transmission medium, carry out the joint between RRU
Channel correcting.
With reference to the third possible implementation of fourth aspect, in the 5th kind of possible implementation of fourth aspect
In, second joint channel corrects unit, in order to complete the correction of the joint channel between multiple RRU, changing RRU roots
The radio-frequency cable that service channel is connected with antenna is transmission medium, carries out the joint channel correction between RRU.
Compared with prior art, the embodiment of the present invention between different RRU by revealing the joint between cable progress RRU by being led to
Channel correction so that the hair correction coefficient between different RRU is multiplied by the value of the channel response of corresponding hair passage, and the difference
RRU between the receipts correction coefficient be multiplied by it is corresponding receipts passage channel response value ratio it is identical.It is many so as to solve
Between individual RRU the problem of channel correcting, to meet requirements of the JT to passage reciprocity.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below by using required in embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for ability
For the those of ordinary skill of domain, without having to pay creative labor, it can also obtain other according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the method flow diagram of joint channel correction between a kind of RRU that the embodiment of the present invention one is provided；
Fig. 2 is a kind of wireless access system simplified block diagram that the embodiment of the present invention one is provided；
Fig. 3 is the method signal of joint channel correction between a kind of outer RRU for correcting type that the embodiment of the present invention one is provided
Figure；
Fig. 4 is the method signal of joint channel correction between a kind of outer RRU for correcting type that the embodiment of the present invention one is provided
Figure；
Fig. 5 is the method signal of joint channel correction between a kind of outer RRU for correcting type that the embodiment of the present invention one is provided
Figure；
Fig. 6 is the method flow diagram of joint channel correction between a kind of RRU that the embodiment of the present invention two is provided；
Fig. 7 be a kind of inside and outside correction type that the embodiment of the present invention three is provided RRU between the method that corrects of joint channel show
It is intended to；
Fig. 8 is the method for joint channel correction between a kind of inside and outside RRU for correcting type that the embodiment of the present invention three, four is provided
Schematic diagram；
Fig. 9 is the equipment structure chart of joint channel correction between a kind of RRU that the embodiment of the present invention five is provided；
Figure 10 is the equipment structure chart of joint channel correction between a kind of RRU that the embodiment of the present invention six is provided；
Figure 11 is the equipment structure chart of joint channel correction between a kind of RRU that the embodiment of the present invention seven is provided；
Figure 12 is the equipment structure chart of joint channel correction between a kind of RRU that the embodiment of the present invention eight is provided；
Figure 13 is a kind of structure drawing of device for network equipment that the embodiment of the present invention nine is provided.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Embodiment one
With reference to Fig. 1, Fig. 1 is the method flow diagram of joint channel correction between a kind of RRU that the embodiment of the present invention one is provided.Such as
Shown in Fig. 1, this method comprises the following steps：
Step 101, same Remote Radio Unit（Radio Remote Unit, RRU）By the method for self-correcting, obtain
Correction coefficient must be sent out and correction coefficient is received so that the same RRU hair correction coefficient is multiplied by the channel of corresponding hair passage
The value of response, and the same RRU the receipts correction coefficient be multiplied by it is corresponding receipts passage channel response value ratio
It is identical；
Referring to figs. 2 and 3 Fig. 2 is a kind of wireless access system simplified block diagram that the embodiment of the present invention one is provided, and Fig. 3 is
Outer correction RRU schematic diagrames, the difference that interior correction RRU is the i.e. outer correction type RRU of interior correction type RRU and outer correction RRU is
Termination power is corrected in RRU or outside RRU, meanwhile, outer correction RRU correction termination power is desirably integrated into antenna.
Single RRU self-correctings are mature technology, and TX represents the transmission channel inside TRX, and RX represents that the reception inside TRX is led to
Road, CTRX represents correction reference channel, and CRX represents that passage is received in correction, and CTX represents correction hair passage.
Self-correcting flow is tentatively introduced：
Send out correcting process：From TX0, TX1, TX2 ... TX（N-1）Launch correction reference signal（Can be frequency division, time-division and code
Point at least one form launched, such as frequency division transmitting, TX0, TX1, TX2 ... TX（N-1）It can launch simultaneously, such as OFDM systems
There is the concept of subcarrier in system on frequency domain, as long as TX0, TX1, TX2 ... TX（N-1）Different subcarriers are taken respectively, it is possible to
Launch simultaneously）, all withdrawn from CRX.Because different TRX transmission signals employ frequency division, thus still can after CRX withdrawals
To distinguish the signal of different TX transmittings.At this point for TX0, it is in the CRX signals received：
R=htx0*hcrx*s, s are correction reference signal, and htx0 represents TX0 channel response, and hcrx represents CRX channel
Response.
Channel estimation is obtained：
Temp1=htx0*hcrx
Send out correction coefficient, that is, below under be designated as 0, DL β0,DL(k), equal to 1/Temp1, β is similarly obtainedi,DL(k),i
≠ 0, i represent TRXi
Receive correcting process：CTX launches, RX0, RX1, RX2, and .. is received, by taking RX0 as an example（Other similar process）, Temp2=
Hctx*hrx0*s, receives correction coefficient, that is, following table is 0, UL β below0,UL(k), equal to 1/Temp2, β is similarly obtainedi,DL
(k),i≠0。
The purpose of channel correcting：
K above represents the subcarrier number inside OFDM symbol.
Discounting for channel response of eating dishes without rice or wine（Direct-connected channel）With the channel response of terminal transceiver channel, then H (k) above
Include the channel response of base station RRU transceiver channels：
Wherein, βi,UL(k) it is receipts channel compensation coefficient, βi,DL(k) it is hair channel compensation coefficient, Hi,UL(k) base band side is represented
Up channel response, Hi,DL(k) downlink channel response of end side, λ e are representedjθ(k)The channel response remained for relative correction,
K is subcarrier number.hcrxRepresent that the channel response of passage, h are received in correctionctxRepresent the channel response of hair correction hair passage.
From formula it can be seen that the final purpose of channel correcting, the equivalent channel response of all business transceiver channels（Correction
Channel response after compensation）Ratio is constant.
In view of channel matrix H and λ ejθH characteristic vector is identical, and residual channel response does not influence on channel characteristics.It is right
In single base station, correction reaches formula, but for multiple base stations, due toThe RRU that it is i that i, which represents to number,
RRUi, the RRU that it is j that j, which represents to number, are denoted as, RRUj is designated as, carrying out coherent transmitting to multiple RRU collaborations brings influence.
Step 102, the RRU is corrected by the joint channel between revealing two RRU of cable progress；
The present invention can also be situated between in addition to the joint channel correction between two RRU is carried out using leakage cable using transmission
The joint channel correction that matter is used between two RRU.The transmission medium is used for the reference signal that transmission channel is corrected.
Wherein, the reference signal of the channel correcting can be public reference signal CRS root sequence or detection reference
Signal SRS root sequence.The transmission medium includes but is not limited to antenna, leakage cable.
In this step, the joint channel carried out between the different RRU by revealing cable between RRU, which is corrected, is specially：
To the outer correction RRU, radio frequency electrical is used due to correcting reference channel and coupling disc or correction coupling function module
Cable（It is designated as correcting radio-frequency cable）It is connected, from fig. 4, it can be seen that the correction radio-frequency cable is replaced by into leakage cable（It is designated as
First correction leakage cable）, carry out the joint channel correction between RRU；
Specifically, the joint channel correction carried out between outer correction RRU is specially：
Cable is revealed using the first correction carry out radio communication between different outer correction RRU, by taking correction RRU outside 2 as an example,
RRU1 is corrected by correction reference signal between the first correction leakage cable transmitting RRU to RRU0, RRU0 using between the RRU received
Reference signal updates RRU0 receipts correction coefficient or hair correction coefficient.RRU0 passes through school between the first correction leakage cable transmitting RRU
Positive reference signal updates RRU1 receipts correction coefficient or hair school using correction reference signal between the RRU received to RRU1, RRU1
Positive coefficient.
The first step, as shown in figure 4, RRU0 and RRU1 are respectively completed self-correcting；
After the completion of RRU0 and RRU1 self-correctings, its self-correcting positive coefficient is each obtained, it is logical that self-correcting positive coefficient includes business hair again
Channel correction coefficient, referred to as hair correction coefficient and business receive channel correcting coefficient, correction coefficient are referred to as received, wherein receiving correction coefficientIt can be expressed as：
k=0,1
Receipts correction coefficient during k=0 is：
Receipts correction coefficient during k=1 is：
Wherein, the RRU that it is k that k, which represents to number, is designated as representing RRU0 when k is 0 in RRUk, the present embodiment, k is represented when being 1
RRU1；N represents n-th of subcarrier, and n=1,2 ... N, N represent subcarrier number；I represents that business receives passage i,Represent
Channel response of the RRUk correction hair passage on n-th of subcarrier；Represent that RRUk business receives passage i at n-th
Channel response on subcarrier.
Hair correction coefficient can be expressed as：
k=0,1
Hair correction coefficient during k=0 is：
Hair correction coefficient during k=1 is：
Wherein, the RRU that it is k that k, which represents to number, is designated as representing RRU0 when k is 0 in RRUk, the present embodiment, k is represented when being 1
RRU1；N represents n-th of subcarrier, and n=1,2 ..., N, i represent i-th of hair passage,Represent that passage is received in RRUk correction
Channel response on n-th of subcarrier；Represent channels of the RRUk business hair passage i on n-th of subcarrier
Response.
RRU0 can be represented after completing self-correcting with formula below：
Wherein NANTRepresent RRU antenna number.
RRU1 can be represented after completing self-correcting with formula below：
It should be noted that be described so that RRU0 and RRU1 has same antenna number as an example here, this method is equally fitted
RRU for any antenna number.
Optionally, transmit-receive combination correction coefficient is expressed as sending out correction coefficient and receives the ratio of correction coefficient：
Using transmit-receive combination correction coefficient, RRU0 can be represented after completing self-correcting with formula below：
Using transmit-receive combination correction coefficient, RRU1 can be represented after completing self-correcting with formula below：
As can be seen that RRU0 and RRU1 are each completed after self-correcting, hair correction coefficient and receive correction coefficient cause RRU0 and
Each passage up-downgoing ratio inside RRU1 is identical.But the ratio between RRU0 and RRU1 is differed.
Signal is launched between second step, RRU；
Correction interface between coupling disc and RRU is attached using leakage cable, can be carried out between RRU0 and RRU1
Radio communication.
RRU1 is by revealing cable to RRU0 transmission signal s (n), n=1,2 ..., N, transmission signal can be LTE and
The various training sequences or reference signal sequence used in WiMAX system.
Do not consider then after noise and interference, corresponding correction reference channel the connecing in n-th subcarrier of RRU0 leakage cables
Collect mail and number be：
n=1,2....,N
Wherein hAir,01(n) it is channel response of eating dishes without rice or wine, represents from RRU1 leakage cable transmittings, RRU0 leakage cable receptions
Eat dishes without rice or wine channel response, for TDD (Time Division Duplexing) system, the channel response phase of eating dishes without rice or wine of uplink and downlink
Deng, thus DL (descending, Downlink) or UL is not identified specially（It is up, Uplink）, there is hAir,01(n)=hAir,10(n)。
The corresponding Base Band Unit of RRU0 presses known reference sequences S and carries out channel estimation, then n-th of subcarrier is estimated
Channel response is：
RRU0 is by revealing cable to RRU1 transmission signal s (n), n=1,2 ..., N, then after not considering noise and disturbing,
RRU1 reveals the corresponding reference correction channel of cable：
n=1,2….,N
The corresponding Base Band Unit of RRU1 presses known reference sequences S and carries out channel estimation, then n-th of subcarrier is estimated
Channel response is：
3rd step, RRU0 and RRU1 update correction coefficient.
RRU0, which updates, receives correction coefficient, has：
As optional, hair correction coefficient is updated, is had：
As optional, transmit-receive combination correction coefficient is updated, is had：
Have after being compensated using the transmitting-receiving correction coefficient after renewal：
Or
RRU1, which updates, receives correction coefficient, has：
As optional, hair correction coefficient is updated, is had：
As optional, transmit-receive combination correction coefficient is updated, is had：
Have after being compensated using the transmitting-receiving correction coefficient after renewal：
Or
Flow is equally applicable to the scene of many RRU splicings of single cell above, and such as 2 4T4R (represent that RRU is that 4 transmittings are logical
Road and 4 receiving channels) it is spliced into 8T8R cell.
Step 103, two RRU after correction are regarded as to the RRU of an entirety, entered by revealing cable with the 3rd RRU
Row joint channel is corrected；Three RRU after correction are regarded as to the RRU of an entirety, carried out by revealing cable with the 4th RRU
Joint channel is corrected, and the rest may be inferred, is corrected by revealing the joint channel between the different RRU of cable completion.
Preferable, with reference to Fig. 5, correction leakage circuit can use the two ways in Fig. 5 to carry out joint channel school between RRU
Just.Leakage mouth may be provided in correction coupling disc or be arranged in RRU.
The method that the embodiment of the present invention provides joint channel correction between a kind of RRU, methods described is adopted by revealing cable
The joint channel between different RRU is carried out with outer correction type to correct so that the different RRU hair correction coefficient is multiplied by corresponding
The value of the channel response of passage is sent out, and the receipts correction coefficient of the same RRU is multiplied by the corresponding channel sound for receiving passage
The ratio for the value answered is identical, the problem of solving channel correcting between multiple cells, to meet requirements of the JT to passage reciprocity.
Embodiment two
With reference to Fig. 6, Fig. 6 is the method flow diagram of the joint channel correction between a kind of RRU that the embodiment of the present invention two is provided.
As shown in fig. 6, methods described comprises the following steps：
Step 601, the reference RRU that any one RRU in the different RRU is corrected as joint channel is chosen；
Specifically, choosing some RRU correction reference channel between multiple RRU as reference, all RRU correction signal
Correction reference channel all from the RRU of this selection is launched or received, it is assumed that selection RRU0 correction reference channel conduct
N Reference Alignment.Reference channel is with reference to shown in Fig. 4, and the reference RRU that different RRU choose RRU0 as joint channel and corrected is all
RRU carries out joint channel correction by the RRU0.
Step 602, the different RRU make joint channel correction by revealing cable with any one RRU described in selection.
Specifically, based on shown in Fig. 4, the first step, RRU0 and RRU1 receive correction coefficient and calculated.
RRU0 launches correction signal s (n) by correcting reference channel, and RRU0 is received by service channel, and RRU1 connects
Receive and the wireless signal that cable leakage comes is revealed by N Reference Alignment reference channel, received via service channel.For
RRU0, signal flow is:E0-->T0-->D0-->B0-->A0;For RRU1, signal flow is:E0-->T0-->T1-->
D1-->B1-->A1。
RRU0 reception correction coefficient is：
RRU1 reception correction coefficient is：
Second step, RRU0 and RRU1 hair correction coefficient are calculated.
First moment, RRU0 uses frequency division manner, A0-->B0-->D0-->T0-->E0, on all service channels simultaneously
Launch correction signal, hair correction coefficient has：
Second moment, RRU1 uses frequency division manner, A1-->B1-->D1-->T1-->T0-->E0, in all service channels
Upper to launch correction signal simultaneously, hair correction coefficient has：
Or, RRU0 and RRU1 launch correction letter simultaneously using frequency division manner on RRU0 and RRU1 all service channels
Number, obtain and hair correction coefficient as above.
After being compensated using correction coefficient, have for RRU0：
After being compensated using correction coefficient, have for RRU1：
Obviously, the result on the right of RRU0 and RRU1 equatioies is equal, reaches the purpose of RRU0 and RRU1 joint channels correction.Should
The joint channel correction that scheme can be expanded between any number of RRU, as long as ensureing that correction signal is final all by some RRU's
Correct reference channel transmitting and receive.In order to reach the purpose of correction signal leakage, it would however also be possible to employ Fig. 5 new RRU
Structure.
The method that the embodiment of the present invention provides joint channel correction between a kind of RRU, methods described is adopted by revealing cable
The joint channel between different RRU is carried out with outer correction type to correct so that the different RRU hair correction coefficient is multiplied by corresponding
The value of the channel response of passage is sent out, and the receipts correction coefficient of the same RRU is multiplied by the corresponding channel sound for receiving passage
The ratio for the value answered is identical, the problem of solving channel correcting between multiple cells, to meet requirements of the JT to passage reciprocity.
Embodiment three
With reference to Fig. 7, Fig. 7 is joint channel correction between a kind of inside and outside RRU for correcting type that the embodiment of the present invention three is provided
Method schematic diagram.
In order to complete the correction of the joint channel between multiple interior correction RRU, change RRU root service channels and be connected with antenna
Radio-frequency cable for leakage cable（It is designated as the second correction leakage cable）, carry out the joint channel correction between RRU；With reference to Fig. 8,
There is correcting process between RRU：
The first step：Identical with step 101 in embodiment one, RRU0 and RRU1 each complete correction；
Receive correction coefficientIt can be expressed as：
k=0,1
Hair correction coefficient can be expressed as：
k=0,1
Preferable, using relative correction（Using the correction coefficient of first service channel as reference）, RRU0 and RRU1's
Coefficient is：
k=0,1
k=0,1
Second step：RRU0 the second correction leakage cable（Second correction leakage cable is in replacing first step relative correction
With reference to service channel correspondence radio-frequency cable）Launch second correction leakage cables of the correction signal s (n) to RRU1 between RRU, connect
To reception signal r1(n), RRU1 the second correction leakage cable（Second correction leakage cable is in replacing first step relative correction
With reference to service channel correspondence radio-frequency cable）Launch second correction leakage cables of the correction signal s (n) to RRU0 between RRU, connect
Collection of letters r0(n) r, is utilized0And r (n)1(n) channel estimation obtains γ0And γ (n)1(n), γ0And γ (n)1(n) represent that channel rings
It should be worth.
3rd step：Update the hair correction system of the RRU0 and RRU1 relative correction coefficients obtained in the first step, RRU0 and RRU1
Number is multiplied by γ respectively0And γ (n)1(n), keep receipts correction coefficient constant；Or RRU0 and RRU1 receipts correction coefficient respectively divided by
γ0And γ (n)1(n), keep hair correction coefficient constant；Or RRU0 and RRU1 transmit-receive combination correction coefficient difference divided by γ0
And γ (n)1(n)。
For expanding to more RRU scenes, if selected for relative correction, and RRU0 passage 0 such as is selected to be to refer to base
Standard, as long as other RRU and RRU0 carries out RRU0 and RRU1 trimming processes above, you can joint channel is corrected between completing many RRU.Such as
Fruit does not select relative correction, then after the completion of the correction of RRU0 and RRU1 joint channels, as a virtual RRU, continues and residue
RRU be corrected and extend to joint channel between more RRU and correct.
The method that the embodiment of the present invention provides joint channel correction between a kind of RRU, methods described is adopted by revealing cable
The joint channel between different RRU is carried out with interior correction type to correct so that the different RRU hair correction coefficient is multiplied by corresponding
The value of the channel response of passage is sent out, and the receipts correction coefficient of the same RRU is multiplied by the corresponding channel sound for receiving passage
The ratio for the value answered is identical, the problem of solving channel correcting between multiple cells, to meet requirements of the JT to passage reciprocity.
Example IV
With reference to Fig. 8, Fig. 8 is joint channel correction between a kind of inside and outside RRU for correcting type that the embodiment of the present invention four is provided
Method schematic diagram.
In order to complete the correction of the joint channel between multiple interior correction RRU, change RRU root service channels and be connected with antenna
Radio-frequency cable for leakage cable（It is designated as the second correction leakage cable）, carry out the joint channel correction between RRU；With reference to Fig. 8,
There is correcting process between RRU：
The first step：Identical with step 201 in embodiment two, any one RRU chosen in the different RRU is used as connection
Close the reference RRU of channel correcting；
Specifically, choosing some RRU correction reference channel between multiple RRU as reference, all RRU correction signal
Correction reference channel all from the RRU of this selection is launched or received, it is assumed that selection RRU0 correction reference channel is T0
Corresponding leakage cable is used as N Reference Alignment.Reference channel is with reference to shown in Fig. 8, and different RRU choose RRU0 and are used as joint channel school
Positive reference RRU, all RRU carries out joint channel correction by the RRU0.
Second step, obtain RRU0 receives correction parameter and RRU1 reception correction parameter；
RRU0 reception correction coefficient is：
WhereinRepresent correction reference channel T0 leakage mouths and RRUk antenna i channel response of eating dishes without rice or wine.
RRU1 reception correction coefficient is：
3rd step：Obtain RRU0 hair correction parameter and RRU1 hair correction parameter；
Or, RRU0 and RRU1 launch correction letter simultaneously using frequency division manner on RRU0 and RRU1 all service channels
Number, obtain and hair correction coefficient as above.
After being compensated using correction coefficient, have for RRU0：
After being compensated using correction coefficient, have for RRU1：
Obviously, the result on the right of RRU0 and RRU1 equatioies is equal, reaches the purpose of RRU0 and RRU1 joint channels correction.Should
The joint channel correction that scheme can be expanded between any number of RRU, as long as ensureing that correction signal is final all by some RRU's
Reference channel is corrected to receive.
The method that the embodiment of the present invention provides joint channel correction between a kind of RRU, methods described is adopted by revealing cable
The joint channel between different RRU is carried out with interior correction type to correct so that the different RRU hair correction coefficient is multiplied by corresponding
The value of the channel response of passage is sent out, and the receipts correction coefficient of the same RRU is multiplied by the corresponding channel sound for receiving passage
The ratio for the value answered is identical, the problem of solving channel correcting between multiple cells, to meet requirements of the JT to passage reciprocity.
Embodiment five
With reference to Fig. 9, Fig. 9 is the equipment structure chart of joint channel correction between a kind of RRU that the embodiment of the present invention five is provided, such as
Shown in Fig. 9, the equipment includes such as lower unit：
First joint channel corrects unit 901, and the first joint channel correction unit 901 includes such as lower unit：Self-correcting
Positive unit 902, joint channel correction unit 903, the first associated units 904, the second associated units 905, the self-level unit
902 step 101 for performing Fig. 1 in embodiment one, joint channel correction unit 903 is used to perform Fig. 1 in embodiment one
Step 102, the first associated units 904 and the second associated units 905 are used for the step 103 for performing Fig. 1 in embodiment one.
One of ordinary skill in the art will appreciate that to be each included by the terminal device in the embodiment of the present invention five
Individual unit is simply divided according to function logic, but is not limited to above-mentioned division, as long as corresponding work(can be realized
Energy；In addition, the specific name of each functional unit is also only to facilitate mutually differentiation, is not limited to the guarantor of the application
Protect scope.
Self-level unit 902, for methods of the same RRU by self-correcting, obtains hair correction coefficient and receives correction system
Number so that the same RRU hair correction coefficient is multiplied by the value of the channel response of corresponding hair passage, and described same
The ratio that the RRU receipts correction coefficient is multiplied by the value of the channel response of corresponding receipts passage is identical；
Joint channel correct unit 903, for the RRU by reveal cable carry out two RRU between joint channel school
Just；
First associated units 904 and the second associated units 905, for regarding two RRU after correction as an entirety
RRU, by revealing cable with the 3rd RRU progress joint channel correction；Regard three RRU after correction as an entirety
RRU, by revealing cable with the 4th RRU progress joint channel correction, the rest may be inferred, and different RRU are completed by revealing cable
Between joint channel correction.
Preferable, with reference to Fig. 5, correction leakage circuit can use the two ways in Fig. 5 to carry out joint channel school between RRU
Just.Leakage mouth may be provided in correction coupling disc or be arranged in single RRU.
The equipment also include processing unit, the processing unit specifically for：
The joint channel carried out by transmission medium between different RRU is corrected, and the transmission medium is corrected for transmission channel
Reference signal.
Wherein, the reference signal of the channel correcting can be public reference signal CRS root sequence or detection reference
Signal SRS root sequence.The transmission medium includes but is not limited to antenna, leakage cable.
The equipment that the embodiment of the present invention provides joint channel correction between a kind of RRU, the equipment is adopted by revealing cable
The joint channel between different RRU is carried out with outer correction type to correct so that the different RRU hair correction coefficient is multiplied by corresponding
The value of the channel response of passage is sent out, and the receipts correction coefficient of the same RRU is multiplied by the corresponding channel sound for receiving passage
The ratio for the value answered is identical, the problem of solving channel correcting between multiple cells, to meet requirements of the JT to passage reciprocity.
Embodiment six
With reference to Figure 10, Figure 10 is the equipment structure chart of joint channel correction between a kind of RRU that the embodiment of the present invention six is provided.
As shown in Figure 10, the equipment includes such as lower unit：
First joint channel corrects unit 1001, and the first joint channel correction unit 1001 includes such as lower unit：Choosing
Select unit 1002, the 3rd associated units 1003；The selecting unit 1002 is used for the step 601 for performing Fig. 6 in embodiment two, institute
State the step 602 that the 3rd associated units 1003 are used to perform Fig. 6 in embodiment two.One of ordinary skill in the art will appreciate that being
The unit included by terminal device in the embodiment of the present invention five is simply divided according to function logic, but simultaneously
Above-mentioned division is not limited to, as long as corresponding function can be realized；In addition, the specific name of each functional unit is also
For the ease of mutually differentiation, the protection domain of the application is not limited to.
Selecting unit 1002, for choosing the reference that any one RRU in the different RRU is corrected as joint channel
RRU；
Specifically, choosing some RRU correction reference channel between multiple RRU as reference, all RRU correction signal
Correction reference channel all from the RRU of this selection is launched or received, it is assumed that selection RRU0 correction reference channel conduct
N Reference Alignment.Reference channel is with reference to shown in Fig. 4, and the reference RRU that different RRU choose RRU0 as joint channel and corrected is all
RRU carries out joint channel correction by the RRU0.
3rd associated units 1003, are made for the different RRU by revealing cable with any one RRU described in selection
Joint channel is corrected.
In order to reach the purpose of correction signal leakage, it would however also be possible to employ Fig. 5 new RRU structures.
The equipment also include processing unit, the processing unit specifically for：
The joint channel carried out by transmission medium between different RRU is corrected, and the transmission medium is corrected for transmission channel
Reference signal.
Wherein, the reference signal of the channel correcting can be public reference signal CRS root sequence or detection reference
Signal SRS root sequence.The transmission medium includes but is not limited to antenna, leakage cable.
The equipment that the embodiment of the present invention provides joint channel correction between a kind of RRU, the equipment is adopted by revealing cable
The joint channel between different RRU is carried out with outer correction type to correct so that the different RRU hair correction coefficient is multiplied by corresponding
The value of the channel response of passage is sent out, and the receipts correction coefficient of the same RRU is multiplied by the corresponding channel sound for receiving passage
The ratio for the value answered is identical, the problem of solving channel correcting between multiple cells, to meet requirements of the JT to passage reciprocity.
Embodiment seven
With reference to Figure 11, Figure 11 is the equipment structure chart of joint channel correction between a kind of RRU that the embodiment of the present invention seven is provided,
The equipment includes the first joint channel and corrects unit 1101, and the equipment also includes the second joint correction unit 1102.It is described
Second joint correction unit 1102 is for performing the step first step in embodiment three to the 3rd step.
One of ordinary skill in the art will appreciate that to be each included by the terminal device in the embodiment of the present invention five
Individual unit is simply divided according to function logic, but is not limited to above-mentioned division, as long as corresponding work(can be realized
Energy；In addition, the specific name of each functional unit is also only to facilitate mutually differentiation, is not limited to the guarantor of the application
Protect scope.
In order to complete the correction of the joint channel between multiple interior correction RRU, change RRU root service channels and be connected with antenna
Radio-frequency cable for leakage cable（It is designated as the second correction leakage cable）, carry out the joint channel correction between RRU；With reference to Fig. 8,
There is correcting process between RRU：
The first step：Identical with step 101 in embodiment one, RRU0 and RRU1 each complete correction；
Receive correction coefficientIt can be expressed as：
k=0,1
Hair correction coefficient can be expressed as：
k=0,1
Using relative correction（Using the correction coefficient of first service channel as reference）, RRU0 and RRU1 coefficient is：
k=0,1
k=0,1
Second step：RRU0 the second correction leakage cable（Second correction leakage cable is in replacing first step relative correction
With reference to service channel correspondence radio-frequency cable）Launch second correction leakage cables of the correction signal s (n) to RRU1 between RRU, connect
To reception signal r1(n), RRU1 the second correction leakage cable（Second correction leakage cable is in replacing first step relative correction
With reference to service channel correspondence radio-frequency cable）Launch second correction leakage cables of the correction signal s (n) to RRU0 between RRU, connect
Collection of letters r0(n) r, is utilized0And r (n)1(n) channel estimation obtains γ0And γ (n)1(n), γ0And γ (n)1(n) represent that channel rings
It should be worth.
3rd step：Update the hair correction system of the RRU0 and RRU1 relative correction coefficients obtained in the first step, RRU0 and RRU1
Number is multiplied by γ respectively0And γ (n)1(n), keep receipts correction coefficient constant；Or RRU0 and RRU1 receipts correction coefficient respectively divided by
γ0And γ (n)1(n), keep hair correction coefficient constant；Or RRU0 and RRU1 transmit-receive combination correction coefficient difference divided by γ0
And γ (n)1(n)。
The equipment that the embodiment of the present invention provides joint channel correction between a kind of RRU, the equipment is adopted by revealing cable
The joint channel between different RRU is carried out with interior correction type to correct so that the different RRU hair correction coefficient is multiplied by corresponding
The value of the channel response of passage is sent out, and the receipts correction coefficient of the same RRU is multiplied by the corresponding channel sound for receiving passage
The ratio for the value answered is identical, the problem of solving channel correcting between multiple cells, to meet requirements of the JT to passage reciprocity.
Embodiment eight
With reference to Figure 12, Figure 12 is the equipment structure chart of joint channel correction between a kind of RRU that the embodiment of the present invention eight is provided,
The equipment includes the first joint channel and corrects unit 1201, and the network equipment also includes the second joint correction unit 1202.
The second joint correction unit 1202 is for performing the step first step in example IV to the 3rd step.
One of ordinary skill in the art will appreciate that to be each included by the terminal device in the embodiment of the present invention five
Individual unit is simply divided according to function logic, but is not limited to above-mentioned division, as long as corresponding work(can be realized
Energy；In addition, the specific name of each functional unit is also only to facilitate mutually differentiation, is not limited to the guarantor of the application
Protect scope.
In order to complete the correction of the joint channel between multiple interior correction RRU, change RRU root service channels and be connected with antenna
Radio-frequency cable for leakage cable（It is designated as the second correction leakage cable）, carry out the joint channel correction between RRU；With reference to Fig. 8,
There is correcting process between RRU：
The first step：Identical with step 201 in embodiment two, any one RRU chosen in the different RRU is used as connection
Close the reference RRU of channel correcting；
Specifically, choosing some RRU correction reference channel between multiple RRU as reference, all RRU correction signal
Correction reference channel all from the RRU of this selection is launched or received, it is assumed that selection RRU0 correction reference channel conduct
N Reference Alignment.Reference channel is with reference to shown in Fig. 8, and the reference RRU that different RRU choose RRU0 as joint channel and corrected is all
RRU carries out joint channel correction by the RRU0.
Second step, obtain RRU0 receives correction parameter and RRU1 reception correction parameter；
RRU0 reception correction coefficient is：
RRU1 reception correction coefficient is：
3rd step：Obtain RRU0 hair correction parameter and RRU1 hair correction parameter；
Or, RRU0 and RRU1 launch correction letter simultaneously using frequency division manner on RRU0 and RRU1 all service channels
Number, obtain and hair correction coefficient as above.
After being compensated using correction coefficient, have for RRU0：
After being compensated using correction coefficient, have for RRU1：
Obviously, the result on the right of RRU0 and RRU1 equatioies is equal, reaches the purpose of RRU0 and RRU1 joint channels correction.Should
The joint channel correction that scheme can be expanded between any number of RRU, as long as ensureing that correction signal is final all by some RRU's
Reference channel is corrected to receive.
The equipment that the embodiment of the present invention provides joint channel correction between a kind of RRU, the equipment is adopted by revealing cable
The joint channel between different RRU is carried out with interior correction type to correct so that the different RRU hair correction coefficient is multiplied by corresponding
The value of the channel response of passage is sent out, and the receipts correction coefficient of the same RRU is multiplied by the corresponding channel sound for receiving passage
The ratio for the value answered is identical, the problem of solving channel correcting between multiple cells, to meet requirements of the JT to passage reciprocity.
Embodiment nine
With reference to Figure 13, Figure 13 is a kind of structure drawing of device for network equipment that the embodiment of the present invention nine is provided.With reference to Figure 13,
Fig. 3 is a kind of network equipment 1200 provided in an embodiment of the present invention, and the specific embodiment of the invention is not to the network equipment
Implement and limit.The equipment 1300 includes：
Processor (processor) 1301, communication interface (Communications Interface) 1302, memory
(memory) 1303, bus 1304.
Processor 1301, communication interface 1302, memory 1303 completes mutual communication by bus 1304.
Communication interface 1302, for being communicated with other network equipments；
Processor 1301, for configuration processor A.
Specifically, program A can include program code, and described program code includes computer-managed instruction.
Processor 1301 is probably a central processor CPU, or specific integrated circuit ASIC（Application
Specific Integrated Circuit）, or it is arranged to implement one or more integrated electricity of the embodiment of the present invention
Road.
Memory 1303, for depositing program A.Memory 1303 may include high-speed RAM memory, it is also possible to also include
Nonvolatile memory（non-volatile memory）.Program A can specifically include：
Self-level unit 902, for methods of the same RRU by self-correcting, obtains hair correction coefficient and receives correction system
Number so that the same RRU hair correction coefficient is multiplied by the value of the channel response of corresponding hair passage, and described same
The ratio that the RRU receipts correction coefficient is multiplied by the value of the channel response of corresponding receipts passage is identical；
Joint channel correct unit 903, for the RRU by reveal cable carry out two RRU between joint channel school
Just；
First associated units 904 and the second associated units 905, for regarding two RRU after correction as an entirety
RRU, by revealing cable with the 3rd RRU progress joint channel correction；Regard three RRU after correction as an entirety
RRU, by revealing cable with the 4th RRU progress joint channel correction, the rest may be inferred, and different RRU are completed by revealing cable
Between joint channel correction.
Or program A can specifically include：
Selecting unit 1002, for choosing the reference that any one RRU in the different RRU is corrected as joint channel
RRU；
3rd associated units 1003, are made for the different RRU by revealing cable with any one RRU described in selection
Joint channel is corrected.
Or program A can specifically include：
First joint channel corrects unit 901, the second joint correction unit 1101.
Or program A can specifically include：
First joint channel corrects unit 1001, the second joint correction unit 1201
Each unit implements referring to the corresponding list in Fig. 9 or Figure 10 or Figure 11 or embodiment illustrated in fig. 12 in program A
Member, will not be described here.
The preferred embodiment of the present invention is the foregoing is only, is not intended to limit the scope of the present invention..It is any
Any modifications, equivalent substitutions and improvements made within the present invention etc., should be included within application claims scope.
Claims (20)
1. a kind of method that joint channel is corrected between long-distance radio frequency unit RRU, it is characterised in that methods described includes：
Corrected by revealing the joint channel between the different RRU of cable progress so that the hair correction coefficient between different RRU is multiplied by correspondence
Hair passage channel response value, the receipts correction coefficient between different RRU is multiplied by the corresponding channel response for receiving passage
The ratio of value is identical；
It is described to be corrected by revealing the joint channel between the different RRU of cable progress, including：
Same RRU obtains hair correction coefficient and receives correction coefficient so that same RRU's is described by the method for self-correcting
Hair correction coefficient is multiplied by the value of the channel response of corresponding hair passage, and the receipts correction coefficient of the same RRU is multiplied by
The ratio of the value of the corresponding channel response for receiving passage is identical；
The RRU is corrected by the joint channel between revealing two RRU of cable progress；
Two RRU after correction are regarded to the RRU of an entirety as, by revealing cable with the 3rd RRU progress joint channels school
Just；
Three RRU after correction are regarded to the RRU of an entirety as, by revealing cable with the 4th RRU progress joint channels school
Just, the rest may be inferred, is corrected by revealing the joint channel between the different RRU of cable completion.
2. according to the method described in claim 1, it is characterised in that the joint by revealing between the different RRU of cable progress
Channel correcting, including：
Choose the reference RRU that any one RRU in the different RRU is corrected as joint channel；
The different RRU make joint channel correction by revealing cable with any one RRU described in selection.
3. the method according to any one in claim 1 to 2, it is characterised in that methods described also includes：
Different RRU carry out the joint channel correction between interior correction type or outer correction type RRU by revealing cable.
4. method according to claim 3, it is characterised in that the different RRU carry out outer correction class by revealing cable
Joint channel correction between type RRU, including：
For the outer correction, because correction reference channel and coupling disc, or correction coupling function module use radio-frequency cable
It is connected, the radio-frequency cable is replaced by leakage cable, carries out the joint channel correction between RRU.
5. method according to claim 3, it is characterised in that the different RRU carry out interior correction class by revealing cable
Joint channel correction between type or outer correction type RRU, including：
In order to complete the correction of the joint channel between multiple interior correction RRU, what replacing RRU roots service channel was connected with antenna penetrates
Frequency cable is leakage cable, carries out the joint channel correction between RRU.
6. a kind of method that joint channel is corrected between long-distance radio frequency unit RRU, it is characterised in that methods described includes：
The joint channel carried out by transmission medium between different RRU is corrected, and the transmission medium is used for the ginseng that transmission channel is corrected
Examine signal so that the hair correction coefficient between different RRU is multiplied by the value of the channel response of corresponding hair passage, between different RRU
Receipts correction coefficient be multiplied by it is corresponding receipts passage channel response value ratio it is identical；
The joint channel carried out by transmission medium between different RRU is corrected, including：
Same RRU obtains hair correction coefficient and receives correction coefficient so that same RRU's is described by the method for self-correcting
Hair correction coefficient is multiplied by the value of the channel response of corresponding hair passage, and the receipts correction coefficient of the same RRU is multiplied by
The ratio of the value of the corresponding channel response for receiving passage is identical；
The joint channel that the RRU is carried out by transmission medium between two RRU is corrected；
Two RRU after correction are regarded as to the RRU of an entirety, joint channel school is carried out with the 3rd RRU by transmission medium
Just；
Three RRU after correction are regarded as to the RRU of an entirety, joint channel school is carried out with the 4th RRU by transmission medium
Just, the rest may be inferred, and the joint channel completed by transmission medium between different RRU is corrected.
7. method according to claim 6, it is characterised in that the joint carried out by transmission medium between different RRU
Channel correcting, including：
Choose the reference RRU that any one RRU in the different RRU is corrected as joint channel；
The different RRU make joint channel correction by transmission medium with any one RRU described in selection.
8. the method according to claim 6 to 7 any one, it is characterised in that methods described also includes：
Different RRU carry out the joint channel correction between interior correction type or outer correction type RRU by transmission medium.
9. method according to claim 8, it is characterised in that the different RRU carry out outer correction class by transmission medium
Joint channel correction between type RRU, including：
For the outer correction, because correction reference channel and coupling disc, or correction coupling function module use radio-frequency cable
It is connected, the radio-frequency cable is replaced by transmission medium, carries out the joint channel correction between RRU.
10. method according to claim 8, it is characterised in that the different RRU carry out interior correct by transmission medium
Joint channel correction between type or outer correction type RRU, including：
In order to complete the correction of the joint channel between multiple interior correction RRU, what replacing RRU roots service channel was connected with antenna penetrates
Frequency cable is transmission medium, carries out the joint channel correction between RRU.
11. the equipment that joint channel is corrected between a kind of long-distance radio frequency unit RRU, it is characterised in that the equipment includes：
First joint channel corrects unit, for being corrected by revealing the joint channel between the different RRU of cable progress so that different
Hair correction coefficient between RRU is multiplied by the value of the channel response of corresponding hair passage, and the receipts correction coefficient between different RRU is multiplied by
The ratio of the value of the corresponding channel response for receiving passage is identical；
First joint channel corrects unit, including：
Self-level unit, for methods of the same RRU by self-correcting, obtains hair correction coefficient and receives correction coefficient so that
The same RRU hair correction coefficient is multiplied by the value of the channel response of corresponding hair passage, and the same RRU's is described
The ratio for receiving the value that correction coefficient is multiplied by the corresponding channel response for receiving passage is identical；
Joint channel corrects unit, is corrected for the RRU by the joint channel between revealing two RRU of cable progress；
First associated units, the RRU for two RRU after correction to be regarded as to an entirety, by revealing cable with the 3rd
RRU carries out joint channel correction；
Second associated units, the RRU for three RRU after correction to be regarded as to an entirety, by revealing cable with the 4th
RRU carries out joint channel correction, and the rest may be inferred, is corrected by revealing the joint channel between the different RRU of cable completion.
12. equipment according to claim 11, it is characterised in that first joint channel corrects unit, including：
Unit is chosen, for choosing the reference RRU that any one RRU in the different RRU is corrected as joint channel；
3rd associated units, joint channel is made for the different RRU by revealing cable with any one RRU described in selection
Correction.
13. according to equipment any one of in claim 11 to 12, it is characterised in that the equipment also includes second
Close channel correction unit：
Second joint channel corrects unit, for different RRU by revealing cable, carries out interior correction type or outer correction
Joint channel correction between type RRU.
14. equipment according to claim 13, it is characterised in that second joint channel corrects unit, for for
The outer correction, because correction reference channel and coupling disc, or correction coupling function module are connected using radio-frequency cable, by institute
State radio-frequency cable and be replaced by leakage cable, carry out the joint channel correction between RRU.
15. equipment according to claim 12, it is characterised in that second joint channel corrects unit, in order to
The joint channel correction between multiple RRU is completed, the radio-frequency cable that replacing RRU roots service channel is connected with antenna is leakage electricity
Cable, carries out the joint channel correction between RRU.
16. the equipment that joint channel is corrected between a kind of long-distance radio frequency unit RRU, it is characterised in that the equipment includes：
First joint channel corrects unit, for carrying out the correction of the joint channel between different RRU, the transmission by transmission medium
Medium is used for the reference signal that transmission channel is corrected so that the hair correction coefficient between different RRU is multiplied by the letter of corresponding hair passage
The value of road response, the ratio that the receipts correction coefficient between different RRU is multiplied by the value of the channel response of corresponding receipts passage is identical；
First joint channel corrects unit, including：
Self-level unit, for methods of the same RRU by self-correcting, obtains hair correction coefficient and receives correction coefficient so that
The same RRU hair correction coefficient is multiplied by the value of the channel response of corresponding hair passage, and the same RRU's is described
The ratio for receiving the value that correction coefficient is multiplied by the corresponding channel response for receiving passage is identical；
Joint channel corrects unit, and the joint channel carried out for the RRU by transmission medium between two RRU is corrected；
First associated units, the RRU for two RRU after correction to be regarded as to an entirety, by transmission medium with the 3rd
RRU carries out joint channel correction；
Second associated units, the RRU for three RRU after correction to be regarded as to an entirety, by transmission medium with the 4th
RRU carries out joint channel correction, and the rest may be inferred, and the joint channel completed by transmission medium between different RRU is corrected.
17. equipment according to claim 16, it is characterised in that first joint channel corrects unit, including：
Unit is chosen, for choosing the reference RRU that any one RRU in the different RRU is corrected as joint channel；
3rd associated units, joint channel is made for the different RRU by transmission medium with any one RRU described in selection
Correction.
18. according to equipment any one of in claim 16 to 17, it is characterised in that the equipment also includes second
Close channel correction unit：
Second joint channel corrects unit, for different RRU by transmission medium, carries out interior correction type or outer correction
Joint channel correction between type RRU.
19. according to equipment any one of in claim 16 to 17, it is characterised in that the second joint channel correction
Unit, for for outer correction, because correction reference channel and coupling disc, or correction coupling function module use radio-frequency cable
It is connected, the radio-frequency cable is replaced by transmission medium, carries out the joint channel correction between RRU.
20. equipment according to claim 19, it is characterised in that second joint channel corrects unit, in order to
The joint channel correction between multiple RRU is completed, the radio-frequency cable that replacing RRU roots service channel is connected with antenna is situated between for transmission
Matter, carries out the joint channel correction between RRU.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310169113.XA CN103905353B (en) | 2012-12-27 | 2013-05-09 | The method and apparatus that joint channel is corrected between a kind of RRU |
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| CN106330350B (en) * | 2015-06-30 | 2019-06-14 | 华为技术有限公司 | The method and relevant apparatus of more long-distance radio frequency unit joint channel corrections |
| CN109155924B (en) * | 2016-05-31 | 2021-05-14 | 华为技术有限公司 | Channel correction method and device between RRUs (remote radio units) |
| CN114070429B (en) * | 2021-10-28 | 2023-04-18 | 中国电子科技集团公司第二十九研究所 | Method for combining radio frequency internal and external correction and computer storage medium |
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