CN103338167A - Channel correction method of remote radio unit (RRU), relevant equipment and system - Google Patents

Abstract

The embodiment of the invention discloses a channel correction method of a remote radio unit (RRU), relevant equipment and a system. The technical solution provided by the embodiment of the invention is that correction signals are interacted through a service channel of a first RRU and a correction reference channel of a second RRU, a compensation factor for channel compensation between the RRUs is acquired according to the interacted correction signals, and service signal compensation is carried out by combining a self-correcting RRU and the compensation factor, thereby being conducive to meeting the requirement of uplink and downlink reciprocity after a plurality of the RRUs are spliced. The mechanism disclosed by the embodiment of the invention can realize splicing of a plurality of the RRUs so as to obtain more service channel RRUs, thereby being conducive to meeting higher communication requirements and giving consideration to requirements of the cost and system capacity expansion. For example, two 2T2Rs in the prior art are spliced into one 4T4R, thereby utilizing the existing investment reasonably.

Description

The channel correcting method of long-distance radio frequency unit and relevant device and system

The application require on December 31st, 2012 submit that Patent Office of the People's Republic of China, application number are 201210592421.9 to, denomination of invention is the priority of the Chinese patent application of " channel correcting method of long-distance radio frequency unit and relevant device and system ", its full content is by reference in conjunction with in this application.

Technical field

The present invention relates to communication technical field, be specifically related to channel correcting method and relevant device and the system of long-distance radio frequency unit.

Background technology

Time division duplex (TDD, Time Division Duplexing) user terminal (UE is passed through to detect in the base station in the system, User Equipment) detection reference signal (SRS of Fa Songing, Sounding Reference Signal) signal, up channel is estimated, and utilize TDD system up-downgoing channel reciprocity, the uplink channel estimation result is carried out wave beam forming as the down channel estimated result.

Though in theory, TDD system up-downgoing channel is reciprocity, but the up-downgoing channel has been introduced different radio-frequency channel, base station respectively in real system, and the response of these radio-frequency channels may be different, and this just need compensate these passages by the means of channel correcting.Theory analysis finds, only need the base station each antenna correspondence on/ratio of downlink radio frequency channel response all equals same value, just can satisfy the requirement of base station wave beam forming.The base station can comprise long-distance radio frequency unit (RRU, Remote Radio Unit) and Base Band Unit (BBU, Base Band Unit), and RRU and BBU can cooperate and finish channel correcting, and then realizes wave beam forming.

Along with the increase of dilatation demand, have the base station of more overcharging a passage and more can satisfy the demands.What adopted for example is that the RRU(of 2T2R is that RRU exists 2 transmission channels and 2 receive paths), later stage is along with the needs of dilatation, the RRU(that finds 4T4R is that RRU exists 4 transmission channels and 4 receive paths) could better satisfy the demands, if all change to 4T4R under this scene, then the cost of investment of the RRU of existing 2T2R has just been wasted.

Summary of the invention

The embodiment of the invention provides RRU channel correcting method and relevant device and system, in the hope of taking into account cost and System Expansion demand.

First aspect present invention provides a kind of RRU channel combined bearing calibration, can comprise:

Carry out the passage self-correcting of the 2nd RRU, receive self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence;

Calibration reference by described the 2nd RRU is received passage, receive first professional first correction signal of sending out the passage emission by a RRU, described first correction signal that receives according to the calibration reference receipts passage by described the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to described first channel response;

Send out second correction signal of passage emission by the calibration reference of described the 2nd RRU, and receive second penalty coefficient, wherein, response obtains described second penalty coefficient based on second channel, and described second channel response is described second correction signal that the first professional receipts passage by a described RRU receives to be carried out channel estimating obtain;

Receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the described second receipts correction coefficient by the service signal that described the 2nd RRU receives, proofread and correct from correction coefficient based on described second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, wherein, service signal by described the 2nd RRU emission is proofreaied and correct based on described second correction coefficient, proofreaies and correct based on the described second receipts self-correcting coefficient by the service signal reception that described the 2nd RRU receives.

In conjunction with first aspect, in first kind of possible execution mode, the passage self-correcting of described execution the 2nd RRU, receive self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence, comprise: carry out the passage self-correcting of the 2nd RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of described the 2nd RRU second from correction coefficient, and obtain second of professional each the subcarrier correspondence of receiving passage of each of described the 2nd RRU and receive self-correcting coefficient, wherein

${\mathrm{\β}}_{k2,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{ct}}\left(n\right)h_{k2,i}^r\left(n\right)};$ ${\mathrm{\β}}_{k2,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{cr}}\left(n\right)h_{k2,i}^t\left(n\right)};$

Wherein, described k2 represents the numbering of the 2nd RRU, and is described

Represent the channel response of business receipts passage i on subcarrier n of the 2nd RRU, described

Represent the channel response of described calibration reference receipts passage on subcarrier n of the 2nd RRU, described

Represent that the described calibration reference of the 2nd RRU sends out the channel response of passage on subcarrier n, described

Represent that the business of the 2nd RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing described the 2nd RRU receive passage i subcarrier n correspondence second receive the self-correcting coefficient, described

The business of representing described the 2nd RRU send out passage i subcarrier n correspondence second from correction coefficient.

In conjunction with first kind of first aspect or first aspect possible execution mode, in second kind of possible execution mode, describedly receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain second and receive correction coefficient, comprise: with described second penalty coefficient divided by described first penalty coefficient obtaining the first relative penalty coefficient, receive the self-correcting coefficient with described second and multiply by the described first relative penalty coefficient to obtain the second receipts correction coefficient; Perhaps, with described first penalty coefficient divided by described second penalty coefficient obtaining the second relative penalty coefficient, with described second receive the self-correcting coefficient divided by the described second relative penalty coefficient to obtain the second receipts correction coefficient.

In conjunction with first kind of first aspect or first aspect possible execution mode, in the third possible execution mode, describedly obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, comprise: with described second penalty coefficient divided by described first penalty coefficient obtaining the first relative penalty coefficient, with described second from correction coefficient divided by the described first relative penalty coefficient to obtain second correction coefficient; Perhaps, with described first penalty coefficient divided by described second penalty coefficient to obtain the second relative penalty coefficient, multiply by the described second relative penalty coefficient to obtain second correction coefficient with described second from correction coefficient.

Second aspect present invention provides a kind of RRU channel combined bearing calibration, can comprise:

Carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence;

Receiving passage with first business is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU;

Sending out passage with first business is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, described first professional one of them professional passage of sending out that passage is a described RRU; Wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient;

The described first professional passage of sending out by a described RRU is launched first correction signal;

The described first professional passage of receiving by a described RRU, second correction signal of passage emission is sent out in reception by the calibration reference of described the 2nd RRU, estimate the second channel response according to described second correction signal that receives by the described first professional receipts passage, and according to described second channel response obtains second penalty coefficient, described second penalty coefficient is transmitted in the base station under described the 2nd RRU.

In conjunction with second aspect, in first kind of possible execution mode, the passage self-correcting of described execution the one RRU is received self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence, comprising: carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a described RRU first from correction coefficient, and obtain first of professional each the subcarrier correspondence of receiving passage of each of a described RRU and receive self-correcting coefficient, wherein

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, described k1 represents the numbering of a RRU, The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient.

In conjunction with first kind of second aspect or second aspect possible execution mode, in second kind of possible execution mode, described is reference with the first professional receipts passage, the business of a described RRU is received passage carries out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, described p represents the numbering in the first professional collection of letters road, and is described

The business of representing a described RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, described The business of representing a described RRU receive passage i subcarrier n correspondence first receive correction coefficient.

Second kind of possible execution mode in conjunction with first kind of second aspect or second aspect possible execution mode or second aspect, in the third possible execution mode, described is reference with first professional passage, the business of a described RRU is sent out passage carries out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, described p represents the first professional numbering of sending out passage, and is described

The business of representing a described RRU send out passage p subcarrier n correspondence first from correction coefficient, described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

In conjunction with second kind of possible execution mode of first kind of second aspect or second aspect possible execution mode or second aspect or the third possible execution mode of second aspect, in the 4th kind of possible execution mode, described method also comprises:

The described first professional passage of sending out by a described RRU is launched the 3rd correction signal;

The described first professional passage of receiving by a described RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of described the 3rd RRU, estimate the 4th channel response according to described the 4th correction signal that receives by the described first professional receipts passage, and obtaining the 4th penalty coefficient according to described the 4th channel response, described the 4th penalty coefficient is transmitted in the base station under described the 3rd RRU.

Second kind of possible execution mode or the third possible execution mode of second aspect or the 4th kind of possible execution mode of second aspect in conjunction with first kind of second aspect or second aspect possible execution mode or second aspect, in the 5th kind of possible execution mode

Described method also comprises:

The 4th professional passage of sending out by a described RRU is launched the 5th correction signal;

The 4th professional passage of receiving by a described RRU receives the 6th correction signal of sending out the passage emission by the 5th business of described the 4th RRU, estimate the 6th channel response according to described the 6th correction signal that receives by the described the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to described the 6th channel response, described the 6th penalty coefficient is transmitted in the base station under described the 4th RRU;

The service signal reception of a described RRU is proofreaied and correct based on the described first receipts correction coefficient and is comprised:

The professional service signal of receiving passage of each of a described RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a described RRU;

The service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient and is comprised:

The professional service signal emission of sending out passage of each of a described RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a described RRU based on each professional first correction coefficient sending out the passage correspondence.

Third aspect present invention provides a kind of RRU channel correcting device, comprising:

The self-correcting unit is used for carrying out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence;

First receiving element is used for receiving passage by the calibration reference of described the 2nd RRU, receives first professional first correction signal of sending out the passage emission by a RRU;

Estimation unit is used for estimating first channel response according to described first correction signal that the calibration reference receipts passage by described the 2nd RRU receives, and obtains first penalty coefficient according to described first channel response;

Transmitter unit is used for sending out second correction signal that passage is launched by the calibration reference of described the 2nd RRU;

Second receiving element, be used for receiving second penalty coefficient, wherein, response obtains described second penalty coefficient based on second channel, and described second channel response is described second correction signal that the first professional receipts passage by a described RRU receives to be carried out channel estimating obtain;

Correcting unit, be used for receiving the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the described second receipts correction coefficient by the service signal that described the 2nd RRU receives, proofread and correct from correction coefficient based on described second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, wherein, service signal by described the 2nd RRU emission is proofreaied and correct based on described second correction coefficient, proofreaies and correct based on the described second receipts self-correcting coefficient by the service signal reception that described the 2nd RRU receives.

In conjunction with the third aspect, in first kind of possible execution mode, described self-correcting unit, the concrete passage self-correcting that is used for carrying out the 2nd RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of described the 2nd RRU second from correction coefficient, and obtain second of professional each the subcarrier correspondence of receiving passage of each of described the 2nd RRU and receive self-correcting coefficient, wherein

${\mathrm{\&beta;}}_{k2,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{ct}}\left(n\right)h_{k2,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k2,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{cr}}\left(n\right)h_{k2,i}^t\left(n\right)};$

Wherein, described k2 represents the numbering of the 2nd RRU, and is described

Represent the channel response of business receipts passage i on subcarrier n of the 2nd RRU, described

Represent the channel response of described calibration reference receipts passage on subcarrier n of the 2nd RRU, described

Represent that the described calibration reference of the 2nd RRU sends out the channel response of passage on subcarrier n, described

Represent that the business of the 2nd RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing described the 2nd RRU receive passage i subcarrier n correspondence second receive the self-correcting coefficient, described The business of representing described the 2nd RRU send out passage i subcarrier n correspondence second from correction coefficient.

In conjunction with first kind of the third aspect or the third aspect possible execution mode, in second kind of possible execution mode, described correcting unit specifically is used for, receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, comprise: with described second penalty coefficient divided by described first penalty coefficient obtaining the first relative penalty coefficient, receive the self-correcting coefficient with described second and multiply by the described first relative penalty coefficient to obtain the second receipts correction coefficient; Perhaps, with described first penalty coefficient divided by described second penalty coefficient obtaining the second relative penalty coefficient, with described second receive the self-correcting coefficient divided by the described second relative penalty coefficient to obtain the second receipts correction coefficient;

Perhaps,

Described correcting unit specifically is used for, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, comprise: with described second penalty coefficient divided by described first penalty coefficient obtaining the first relative penalty coefficient, with described second from correction coefficient divided by the described first relative penalty coefficient to obtain second correction coefficient; Perhaps, with described first penalty coefficient divided by described second penalty coefficient to obtain the second relative penalty coefficient, multiply by the described second relative penalty coefficient to obtain second correction coefficient with described second from correction coefficient.

Fourth aspect present invention provides a kind of RRU channel correcting device, comprising:

The self-correcting unit is used for carrying out the passage self-correcting of a RRU, receives self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence;

The first relative correction unit, being used for the first professional receipts passage is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU;

The second relative correction unit, sending out passage with first business is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, described first professional one of them professional passage of sending out that passage is a described RRU; Wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient;

First transmitter unit is used for launching first correction signal by the described first professional passage of sending out of a described RRU;

Receiving element is used for the described first professional passage of receiving by a described RRU, receives second correction signal of sending out the passage emission by the calibration reference of described the 2nd RRU,

Estimation unit is used for estimating the second channel response according to described receiving element by described second correction signal that the described first professional receipts passage receives, and obtains second penalty coefficient according to described second channel response;

Second transmitter unit transmits described second penalty coefficient for base station under described the 2nd RRU.

In conjunction with fourth aspect, in first kind of possible execution mode,

Described self-correcting unit specifically is used for, carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a described RRU first from correction coefficient, and each business that obtains a described RRU is received first receipts self-correcting coefficient of each subcarrier correspondence of passage, wherein

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, described k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient.

In conjunction with first kind of fourth aspect or fourth aspect possible execution mode, in second kind of possible execution mode, the first relative correction unit, concrete being used in the following way, receiving passage with first business is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, wherein

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, described p represents the numbering in the first professional collection of letters road, and is described The business of representing a described RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive correction coefficient.

In conjunction with second kind of possible execution mode of first kind of fourth aspect or fourth aspect possible execution mode or fourth aspect, in the third possible execution mode,

The described second relative correction unit, concrete being used in the following way is reference with first professional passage, the business of a described RRU sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein,

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, described p represents the first professional numbering of sending out passage, and is described

The business of representing a described RRU send out passage p subcarrier n correspondence first from correction coefficient, described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

In conjunction with second kind of possible execution mode of first kind of fourth aspect or fourth aspect possible execution mode or fourth aspect or the third possible execution mode of fourth aspect, in the 4th kind of possible execution mode, described first transmitter unit also is used for, and launches the 3rd correction signal by the described first professional passage of sending out of a described RRU;

Described receiving element also is used for, and receive passage by described first business of a described RRU and receive the 4th correction signal of launching by the 3rd business passage of described the 3rd RRU,

Described estimation unit also is used for, and estimates the 4th channel response according to described the 4th correction signal that receives by the described first professional receipts passage, and obtains the 4th penalty coefficient according to described the 4th channel response;

Described second transmitter unit also is used for, and described the 4th penalty coefficient is transmitted in the base station under described the 3rd RRU.

Second kind of possible execution mode or the third possible execution mode of fourth aspect or the 4th kind of possible execution mode of fourth aspect in conjunction with first kind of fourth aspect or fourth aspect possible execution mode or fourth aspect, in the 5th kind of possible execution mode

Described first transmitter unit also is used for, and launches the 5th correction signal by the 4th professional passage of sending out of a described RRU;

Described receiving element also is used for, and receive passage by the 4th business of a described RRU and receive the 6th correction signal of launching by the 5th business passage of described the 4th RRU,

Described estimation unit also is used for, and estimates the 6th channel response according to described the 6th correction signal that receives by the described the 4th professional receipts passage, and obtains the 6th penalty coefficient according to described the 6th channel response;

Described second transmitter unit also is used for, and described the 6th penalty coefficient is transmitted in the base station under described the 4th RRU;

Wherein, the professional service signal of receiving passage of each of a described RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a described RRU; The professional service signal emission of sending out passage of each of a described RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a described RRU based on each professional first correction coefficient sending out the passage correspondence.

Fifth aspect present invention provides a kind of communication system, comprising:

First base station is used for carrying out the passage self-correcting of a RRU, receives self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence; Receiving passage with first business is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU; Sending out passage with first business is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, described first professional one of them professional passage of sending out that passage is a described RRU; Wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient; The described first professional passage of sending out by a described RRU is launched first correction signal; The described first professional passage of receiving by a described RRU, second correction signal of passage emission is sent out in reception by the calibration reference of described the 2nd RRU, estimate the second channel response according to described second correction signal that receives by the described first professional receipts passage, and according to described second channel response obtains second penalty coefficient, described second penalty coefficient is transmitted in second base station under described the 2nd RRU;

Described second base station is used for carrying out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence; Calibration reference by described the 2nd RRU is received passage, receive first professional first correction signal of sending out the passage emission by a RRU, described first correction signal that receives according to the calibration reference receipts passage by described the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to described first channel response; Send out second correction signal of passage emission by the calibration reference of described the 2nd RRU, and receive described second penalty coefficient that described first base station sends; Receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, wherein the service signal that receives by described the 2nd RRU is proofreaied and correct based on the described second receipts correction coefficient, proofreaies and correct from correction coefficient based on described second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, wherein, service signal by described the 2nd RRU emission is proofreaied and correct based on described second correction coefficient, proofreaies and correct based on the described second receipts self-correcting coefficient by the service signal reception that described the 2nd RRU receives.

In conjunction with the 5th aspect, in first kind of possible execution mode,

Described communication system also comprises: the 3rd base station,

Wherein, described first base station also is used for, and launches the 3rd correction signal by the described first professional passage of sending out of a described RRU; The described first professional passage of receiving by a described RRU receives described the 3rd base station by the 3rd professional the 4th correction signal of sending out the passage emission of described the 3rd RRU, estimate the 4th channel response according to described the 4th correction signal that receives by the described first professional receipts passage, and obtaining the 4th penalty coefficient according to described the 4th channel response, described the 4th penalty coefficient is transmitted in the 3rd base station under described the 3rd RRU;

Described the 3rd base station is used for, and carries out the passage self-correcting of the 3rd RRU, receives self-correcting coefficient and the 3rd from correction coefficient to obtain the 3rd of described the 3rd RRU correspondence; Receiving passage with the 3rd business is reference, the business of described the 3rd RRU is received passage carry out the passage relative correction to obtain the 3rd receipts correction coefficient of described the 3rd RRU correspondence, wherein, described the 3rd business is received one of them professional passage of receiving that passage is described the 3rd RRU; Sending out passage with the 3rd business is reference, the business of described the 3rd RRU is sent out passage carry out the passage relative correction to obtain the 3rd correction coefficient of described the 3rd RRU correspondence, wherein, the described the 3rd professional one of them professional passage of sending out that passage is described the 3rd RRU;

The 3rd professional passage of receiving by described the 3rd RRU, receive described first base station by first professional the 3rd correction signal of sending out the passage emission of a RRU, estimate the 3rd channel response according to described the 3rd correction signal that receives by the described the 3rd professional receipts passage, and obtain the 3rd penalty coefficient according to described the 3rd channel response; By the 3rd professional the 4th correction signal of sending out the passage emission of described the 3rd RRU, and receive described the 4th penalty coefficient that described first base station sends;

Based on described the 3rd penalty coefficient and described the 4th penalty coefficient described the 3rd receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on described the 3rd receipts correction coefficient of upgrading by the service signal that described the 3rd RRU receives, proofread and correct based on described the 3rd correction coefficient by the service signal of the 3rd RRU emission; Perhaps, based on described the 3rd penalty coefficient and described the 4th penalty coefficient the 3rd correction coefficient that has obtained upgraded, wherein, service signal by described the 3rd RRU emission is proofreaied and correct based on described the 3rd correction coefficient of upgrading, and proofreaies and correct based on described the 3rd receipts correction coefficient by the service signal reception that described the 3rd RRU receives.

In conjunction with first kind of possible execution mode of the 5th aspect or the 5th aspect, in second kind of possible execution mode, described communication system also comprises: the 4th base station,

Wherein, described first base station also is used for, and launches the 5th correction signal by the 4th professional passage of sending out of a described RRU; The 4th professional passage of receiving by a described RRU receives the 6th correction signal of sending out the passage emission by the 5th business of described the 4th RRU, estimate the 6th channel response according to described the 6th correction signal that receives by the described the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to described the 6th channel response, described the 6th penalty coefficient is transmitted in the base station under described the 4th RRU; Wherein, the professional service signal of receiving passage of each of a described RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a described RRU; The professional service signal emission of sending out passage of each of a described RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a described RRU based on each professional first correction coefficient sending out the passage correspondence;

Described the 4th base station is used for, and carries out the passage self-correcting of the 4th RRU, receives self-correcting coefficient and the 4th from correction coefficient to obtain the 4th of described the 4th RRU correspondence; Receiving passage with the 5th business is reference, the business of described the 4th RRU is received passage carry out the passage relative correction to obtain the 4th receipts correction coefficient of described the 4th RRU correspondence, wherein, described the 5th business is received one of them professional passage of receiving that passage is described the 4th RRU; Sending out passage with the 5th business is reference, the business of described the 4th RRU is sent out passage carry out the passage relative correction, to obtain the 4th correction coefficient of described the 4th RRU correspondence, wherein, the described the 5th professional one of them professional passage of sending out that passage is described the 4th RRU;

The 5th professional passage of receiving by described the 4th RRU, receive described first base station by the 4th professional the 5th correction signal of sending out the passage emission of a RRU, estimate the 5th channel response according to described the 5th correction signal that receives by the described the 5th professional receipts passage, and obtain the 5th penalty coefficient according to described the 5th channel response; By the 5th professional the 6th correction signal of sending out the passage emission of described the 4th RRU, and receive described the 6th penalty coefficient that described first base station sends;

Based on described the 5th penalty coefficient and described the 6th penalty coefficient described the 4th receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on described the 4th receipts correction coefficient of upgrading by the service signal that described the 4th RRU receives, proofread and correct based on described the 4th correction coefficient by the service signal of the 4th RRU emission; Perhaps, based on described the 5th penalty coefficient and described the 6th penalty coefficient the 4th correction coefficient that has obtained upgraded, wherein, service signal by described the 4th RRU emission is proofreaied and correct based on described the 4th correction coefficient of upgrading, and proofreaies and correct based on described the 4th receipts correction coefficient by the service signal reception that described the 4th RRU receives.

Sixth aspect present invention provides a kind of long-distance radio frequency unit RRU channel combined bearing calibration, comprising:

Carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence;

Receiving reference value with first is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence;

Be reference with first reference value, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient;

The first professional passage of sending out by a described RRU is launched first correction signal;

The first professional passage of receiving by a described RRU, second correction signal of passage emission is sent out in reception by the calibration reference of described the 2nd RRU, estimate the second channel response according to described second correction signal that receives by the described first professional receipts passage, response obtains second penalty coefficient according to second channel, described second penalty coefficient is transmitted in the base station under described the 2nd RRU, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU; Described first professional one of them professional passage of sending out that passage is a described RRU.

In conjunction with the 6th aspect, in first kind of possible execution mode,

The passage self-correcting of described execution the one RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence, comprise: carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a described RRU first from correction coefficient, and each business that obtains a described RRU is received first receipts self-correcting coefficient of each subcarrier correspondence of passage, wherein

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, described k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU, Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient.

In conjunction with first kind of the 6th aspect possible execution mode, in second kind of possible execution mode,

Described is reference with the first receipts reference value, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)};$

Wherein, described

First of expression subcarrier n correspondence is received reference value, and is described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive correction coefficient.

In conjunction with second kind of possible execution mode of first kind of the 6th aspect possible execution mode or the 6th aspect, in the third possible execution mode,

Described is reference with first reference value, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)};$

Wherein, described First reference value of expression subcarrier n correspondence, described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

In conjunction with the third possible execution mode of the 6th aspect, in the 4th kind of possible execution mode,

Described first professional first correction signal of sending out the subcarrier n emission of passage by a described RRU is Wherein, S (n) is reference signal or training signal, and p2 is the first professional numbering of sending out passage, and is described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage p2.

Second kind of possible execution mode or the third possible execution mode of the 6th aspect or the 4th kind of possible execution mode of the 6th aspect in conjunction with first kind of possible execution mode of the 6th aspect or the 6th aspect or the 6th aspect, in the 5th kind of possible execution mode

First of subcarrier n correspondence is received reference value Perhaps, first of subcarrier n correspondence receive reference value

Wherein, described The business of representing a described RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, it is described that professional to receive passage p identical or different with the first professional receipts passage;

First reference value of subcarrier n correspondence

Perhaps, first of subcarrier n correspondence reference value

Wherein, described

The business of representing a described RRU send out passage p subcarrier n correspondence first from correction coefficient, described business sends out passage p and first professional to send out passage identical or different;

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{DL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)\right),$

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{UL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)\right),$

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient, described N _ANTBusiness receipts passage or the professional sum of sending out passage of representing a described RRU,

Expression Corresponding is the phase place of unit with the radian,

Expression

Be the phase place of unit with the radian.

In the 5th kind of possible execution mode in conjunction with the 4th kind of possible execution mode of the third possible execution mode of second kind of possible execution mode of first kind of possible execution mode of the 6th aspect or the 6th aspect or the 6th aspect or the 6th aspect or the 6th aspect or the 6th aspect, in the 6th kind of possible execution mode

Described method also comprises:

The described first professional passage of sending out by a described RRU is launched the 3rd correction signal;

The described first professional passage of receiving by a described RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of described the 3rd RRU, estimate the 4th channel response according to described the 4th correction signal that receives by the described first professional receipts passage, and obtaining the 4th penalty coefficient according to described the 4th channel response, described the 4th penalty coefficient is transmitted in the base station under described the 3rd RRU.

In conjunction with in the 5th kind of possible execution mode of the 4th kind of possible execution mode of the third possible execution mode of second kind of possible execution mode of first kind of possible execution mode of the 6th aspect or the 6th aspect or the 6th aspect or the 6th aspect or the 6th aspect or the 6th aspect or in the 6th kind of possible execution mode of the 6th aspect, in the 7th kind of possible execution mode

Described method also comprises:

The 4th professional passage of sending out by a described RRU is launched the 5th correction signal; The 4th professional passage of receiving by a described RRU receives the 6th correction signal of sending out the passage emission by the 5th business of described the 4th RRU, estimate the 6th channel response according to described the 6th correction signal that receives by the described the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to described the 6th channel response, described the 6th penalty coefficient is transmitted in the base station under described the 4th RRU;

The service signal reception of a described RRU is proofreaied and correct based on the described first receipts correction coefficient and comprised: the professional service signal of receiving passage of each of a described RRU receives, and receives the 4th professional ratio of receiving the first corresponding receipts correction coefficient of passage of correction coefficient and a described RRU based on first of each business receipts passage correspondence and proofreaies and correct;

The service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient and is comprised: the professional service signal emission of sending out passage of each of a described RRU, proofread and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a described RRU based on each professional first correction coefficient sending out the passage correspondence.

Seventh aspect present invention provides a kind of long-distance radio frequency unit RRU channel combined means for correcting, comprising:

The passage self-correcting of a RRU is carried out in the self-correcting unit, receives self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence;

The first relative correction unit, being used for receiving reference value with first is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence;

The second relative correction unit, being used for first reference value is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient;

First transmitter unit is used for launching first correction signal by the first professional passage of sending out of a described RRU, described first professional one of them professional passage of sending out that passage is a described RRU;

Receiving element is used for receiving passage by first business of a described RRU, receives second correction signal of sending out the passage emission by the calibration reference of described the 2nd RRU, wherein, and one of them professional passage of receiving that the described first professional receipts passage is a described RRU;

Estimation unit is used for estimating the second channel response according to described second correction signal that receives by the described first professional receipts passage, and response obtains second penalty coefficient according to second channel;

Second transmitter unit, described second penalty coefficient is transmitted in the base station under described the 2nd RRU.

In conjunction with the 7th aspect, in first kind of possible execution mode,

Described self-correcting unit specifically is used for, carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a described RRU first from correction coefficient, and each business that obtains a described RRU is received first receipts self-correcting coefficient of each subcarrier correspondence of passage, wherein

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, described k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient.

In conjunction with first kind of the 7th aspect possible execution mode, in second kind of possible execution mode,

The first relative correction unit, concrete being used in the following way, receiving reference value with first is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)};$

Wherein, described

First of expression subcarrier n correspondence is received reference value, and is described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive correction coefficient.

In conjunction with first kind of possible execution mode of second kind of the 7th aspect possible execution mode or the 7th aspect, in the third possible execution mode,

The described second relative correction unit, concrete being used in the following way is reference with first reference value, the business of a described RRU sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)};$

Wherein, described

First reference value of expression subcarrier n correspondence, described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

In conjunction with first kind of possible execution mode of second kind of possible execution mode of the 7th aspect or the 7th aspect or the 7th aspect or the third possible execution mode of the 7th aspect, in the 4th kind of possible execution mode,

First of subcarrier n correspondence is received reference value Perhaps, first of subcarrier n correspondence receive reference value

Wherein, described

The business of representing a described RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, it is described that professional to receive passage p identical or different with the first professional receipts passage;

First reference value of subcarrier n correspondence

Perhaps, first of subcarrier n correspondence reference value

Wherein, described

The business of representing a described RRU send out passage p subcarrier n correspondence first from correction coefficient, described business sends out passage p and first professional to send out passage identical or different;

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{DL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)\right),$

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{UL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)\right),$

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient, described N _ANTRepresent professional passage or the professional sum of sending out passage received of a described RRU,

Expression Corresponding is the phase place of unit with the radian,

Expression

Be the phase place of unit with the radian.

Eighth aspect present invention provides a kind of communication system, comprising:

First base station is used for carrying out the passage self-correcting of a RRU, receives self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence; Receiving reference value with first is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence; Be reference with first reference value, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient; The first professional passage of sending out by a described RRU is launched first correction signal; The first professional passage of receiving by a described RRU, second correction signal of passage emission is sent out in reception by the calibration reference of described the 2nd RRU, estimate the second channel response according to described second correction signal that receives by the described first professional receipts passage, response obtains second penalty coefficient according to second channel, described second penalty coefficient is transmitted in second base station under described the 2nd RRU, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU; Described first professional one of them professional passage of sending out that passage is a described RRU;

Described second base station is used for carrying out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence; Calibration reference by described the 2nd RRU is received passage, receive described first base station by first professional first correction signal of sending out the passage emission of a RRU, described first correction signal that receives according to the calibration reference receipts passage by described the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to described first channel response; Send out second correction signal of passage emission by the calibration reference of described the 2nd RRU, and receive described second penalty coefficient that described first base station sends; Receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the described second receipts correction coefficient by the service signal that described the 2nd RRU receives, proofread and correct from correction coefficient based on described second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, wherein, service signal by described the 2nd RRU emission is proofreaied and correct based on described second correction coefficient, proofreaies and correct based on the described second receipts self-correcting coefficient by the service signal reception that described the 2nd RRU receives.

Therefore, in the scheme that the embodiment of the invention provides, the mutual correction signal of calibration reference passage of service channel and the 2nd RRU by a RRU, obtain be used to the penalty coefficient that carries out channel compensation between RRU according to mutual correction signal, self-tuning RRU carries out the service signal compensation in conjunction with penalty coefficient, is conducive to satisfy the requirement of the spliced up-downgoing reciprocity of a plurality of RRU.This mechanism can realize a plurality of RRU are spliced to obtain more service channel RRU, so, is conducive to satisfy higher communication requirement, can take into account cost and System Expansion demand.For example existing two 2T2R being spliced into 1 4T4R, is to the existing investment reasonable use like this.

Description of drawings

In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the schematic flow sheet of a kind of RRU channel correcting method of providing of the embodiment of the invention;

Fig. 2-a is the schematic diagram of a kind of base station of providing of the embodiment of the invention;

Fig. 2-b is the schematic diagram of the another kind of base station that provides of the embodiment of the invention;

Fig. 3 is the schematic flow sheet of the another kind of RRU channel correcting method that provides of the embodiment of the invention;

Fig. 4 is the schematic flow sheet of the another kind of RRU channel correcting method that provides of the embodiment of the invention;

Fig. 5 is a kind of RRU channel correcting schematic representation of apparatus that the embodiment of the invention provides;

Fig. 6 is the schematic diagram of the another kind of base station that provides of the embodiment of the invention;

Fig. 7 is the another kind of RRU channel correcting schematic representation of apparatus that the embodiment of the invention provides;

Fig. 8 is the schematic diagram of the another kind of base station that provides of the embodiment of the invention;

Fig. 9 is the schematic diagram of a kind of communication system of providing of the embodiment of the invention;

Figure 10 is the schematic diagram of the another kind of communication system that provides of the embodiment of the invention;

Figure 11 is the schematic diagram of the another kind of communication system that provides of the embodiment of the invention;

Figure 12 is the schematic diagram of the another kind of communication system that provides of the embodiment of the invention;

Figure 13 is the schematic flow sheet of the another kind of RRU channel correcting method that provides of the embodiment of the invention;

Figure 14 is the another kind of RRU channel correcting schematic representation of apparatus that the embodiment of the invention provides;

Figure 15 is the schematic diagram of the another kind of base station that provides of the embodiment of the invention;

Figure 16 is the schematic diagram of the another kind of communication system that provides of the embodiment of the invention;

Figure 17 is the schematic diagram of the another kind of communication system that provides of the embodiment of the invention;

Figure 18 is the schematic diagram of the another kind of communication system that provides of the embodiment of the invention;

Figure 19 is the schematic diagram of the another kind of communication system that provides of the embodiment of the invention.

Embodiment

The embodiment of the invention provides RRU channel correcting method and relevant device and system, in the hope of taking into account cost and System Expansion demand.

In order to make those skilled in the art person understand the present invention program better, below in conjunction with the accompanying drawing in the embodiment of the invention, technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the embodiment of a part of the present invention, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills should belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.

Below be elaborated respectively.

Term " first " in specification of the present invention and claims and the above-mentioned accompanying drawing, " second ", " the 3rd " " 4th " etc. (if existence) are for the similar object of difference, and needn't be used for describing specific order or precedence.The data that should be appreciated that such use suitably can exchanged under the situation, so as embodiments of the invention described herein for example can with except diagram here or describe those order enforcement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, comprised those steps or unit that process, method or system, product or the equipment of series of steps or unit are not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.

An embodiment of RRU channel correcting method of the present invention.Wherein, a kind of RRU channel correcting method can comprise: carry out the passage self-correcting of the 2nd RRU, receive self-correcting coefficient and second from correction coefficient to obtain second of the 2nd RRU correspondence; Calibration reference by the 2nd RRU is received passage, receive first professional first correction signal of sending out the passage emission by a RRU, first correction signal that receives according to the calibration reference receipts passage by the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to first channel response; Send out second correction signal of passage emission by the calibration reference of the 2nd RRU, and receive second penalty coefficient, wherein, response obtains second penalty coefficient based on second channel, and the second channel response is second correction signal that the first professional receipts passage by a RRU receives to be carried out channel estimating obtain; Receive the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the second receipts correction coefficient by the service signal that the 2nd RRU receives, proofread and correct from correction coefficient based on second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, wherein, service signal by the 2nd RRU emission is proofreaied and correct based on second correction coefficient, proofreaies and correct based on the second receipts self-correcting coefficient by the service signal reception that the 2nd RRU receives.

Referring to Fig. 1, Fig. 1 is the schematic flow sheet of a kind of RRU channel correcting method of providing of the embodiment of the invention.Wherein, as shown in Figure 1, a kind of RRU channel correcting method that the embodiment of the invention provides can comprise following content:

101, carry out the passage self-correcting of the 2nd RRU, receive self-correcting coefficient and second from correction coefficient to obtain second of the 2nd RRU correspondence.

In some embodiments of the invention,

${\mathrm{\&beta;}}_{k2,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{ct}}\left(n\right)h_{k2,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k2,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{cr}}\left(n\right)h_{k2,i}^t\left(n\right)}.$

Wherein, in the above-mentioned formula, k2 represents the numbering of the 2nd RRU,

The channel response of business receipts passage i on subcarrier n of representing the 2nd RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing the 2nd RRU,

Represent that the calibration reference of the 2nd RRU sends out the channel response of passage on subcarrier n,

Represent that the business of the 2nd RRU sends out the channel response of passage i on subcarrier n.Wherein, The business of representing the 2nd RRU receive passage i subcarrier n correspondence second receive the self-correcting coefficient,

The business of representing the 2nd RRU send out passage i subcarrier n correspondence second from correction coefficient.

Wherein, after carrying out the self-correcting of the 2nd RRU, can obtain the self-correcting coefficient of the 2nd RRU, the self-correcting coefficient can comprise professional passage self-correcting coefficient (can abbreviate as from correction coefficient) and the professional passage self-correcting coefficient (can abbreviate as and receive the self-correcting coefficient) of receiving sent out.Wherein, respectively service signal reception and the service signal emission of the 2nd RRU are compensated as if the receipts self-correcting coefficient that utilizes the 2nd RRU with from correction coefficient, just can satisfy the TDD system to the requirement of single RRU up-downgoing reciprocity.Be appreciated that situation is similar for carrying out self-tuning other RRU.

In some embodiments of the invention, carry out the self-correcting of the 2nd RRU after, for example can represent with following formula: $\frac{{\mathrm{\&beta;}}_{k2,i}^{\mathrm{UL}}\left(n\right)h_{k2,i}^r\left(n\right)}{{\mathrm{\&beta;}}_{k2,i}^{\mathrm{DL}}\left(n\right)h_{k2,i}^t\left(n\right)}=\frac{h_{k2}^{\mathrm{cr}}\left(n\right)}{h_{k2}^{\mathrm{ct}}\left(n\right)}.$

Suppose that the business of the 2nd RRU is received passage and the professional numbering of sending out passage and carried out serial number since 0 respectively, then formula 3 can show following form:

$\frac{{\mathrm{\&beta;}}_{k\mathrm{2,0}}^{\mathrm{UL}}\left(n\right)h_{k\mathrm{2,0}}^r\left(n\right)}{{\mathrm{\&beta;}}_{k\mathrm{2,0}}^{\mathrm{DL}}\left(n\right)h_{k\mathrm{2,0}}^t\left(n\right)}=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}\mathrm{2,1}}^{\mathrm{UL}}\left(n\right)h_{k\mathrm{2,1}}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}\mathrm{2,1}}^{\mathrm{DL}}\left(n\right)h_{k\mathrm{2,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{k2,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right)h_{k2,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\&beta;}}_{k2,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right)h_{k2,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{h_{k2}^{\mathrm{cr}}\left(n\right)}{h_{k2}^{\mathrm{ct}}\left(n\right)}.$

Wherein, N _ANTThe professional sum of receiving passage of expression wherein, is numbered identical business receipts passage and can be shared the same antenna with the professional passage of sending out, wherein, and for example

The channel response of business receipts passage 0 on subcarrier n of representing the 2nd RRU,

Represent that the business of the 2nd RRU sends out the channel response of passage 0 on subcarrier n.Wherein,

The business of representing the 2nd RRU receive passage 0 subcarrier n correspondence second receive the self-correcting coefficient,

The business of representing the 2nd RRU send out passage 0 subcarrier n correspondence second from correction coefficient, by that analogy.

Wherein, professional receipts total number of channels equals the professional total number of channels of sending out and equals N _ANT

In some embodiments of the invention, the transmit-receive combination self-correcting factor beta of the 2nd RRU _{K2, i}(n) can be expressed as the receipts self-correcting coefficient of the 2nd RRU and from the ratio of correction coefficient, that is:

${\mathrm{\&beta;}}_{k2,i}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k2,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{k2,i}^{\mathrm{DL}}\left(n\right)};$

If use transmit-receive combination self-correcting factor beta _{K2, i}(n) represent, can represent with following formula after then carrying out the 2nd RRU self-correcting: ${\mathrm{\&beta;}}_{k2,i}\left(n\right)\frac{h_{k2,i}^r\left(n\right)}{h_{k2,i}^t\left(n\right)}=\frac{h_{k2}^{\mathrm{cr}}\left(n\right)}{h_{k2}^{\mathrm{ct}}\left(n\right)};$

102, receive passage by the calibration reference of the 2nd RRU and receive first correction signal of sending out the passage emission by first business of a RRU, estimate first channel response according to first correction signal that receives, and obtain first penalty coefficient according to first channel response.

In some embodiments of the invention, the structure example of the 2nd RRU RRU shown in Fig. 2-a, wherein the 2nd RRU can comprise: the calibration reference passage (wherein, the calibration reference passage comprises that calibration reference is received passage and calibration reference is sent out passage), a plurality of service channels (wherein, service channel can comprise professional passage and the professional passage of receiving received), 2 signal coupling units, the signal of signal coupling unit port 0 can send to port one and/or port 2, simultaneously, the signal of port one and/or port 2 can send to port 0, the signal coupling unit can comprise mixer along separate routes, electronic switch, directional coupler, attenuator etc., and the first signal coupling unit structure can be different with the second coupling unit structure.Wherein, the structure of a RRU can be shown in Fig. 2-a or Fig. 2-b.

In some embodiments of the invention, suppose by a RRU first professional send out passage (the professional passage p of sending out is selected in supposition, if the professional passage of sending out is since 0 serial number, p=0 then, 1 ..N _ANT-1) first correction signal of respective antenna emission is s (n), then the calibration reference by the 2nd RRU is received first correction signal that n subcarrier of the antenna (this antenna is the antenna of reusable service channel correspondence for example, or the antenna for disposing separately) of passage correspondence receives

Can be:

${\tilde{r}}_{k2,c}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;s\left(n\right).$

Wherein, h _{Comm, k2, k1}(n) first service channel to the, the two RRU calibration references of expression the one RRU are received the channel response of communication media between the passage, communication media comprises wireless channel at least, radio frequency cable, antenna etc., pass through radio frequency cable between first service channel to the, the two RRU calibration reference passages as a RRU, antenna, wireless channel communicates, h _{Comm, k2, k1}(n) be radio frequency cable, antenna and the response of wireless channel composite channel.For TDD system, h _{Comm, k1, k2}(n)=h _{Comm, k2, k1}(n).

The reception signal of representing the calibration reference receipts passage of the 2nd RRU.

Wherein, after the calibration reference by the 2nd RRU is received passage and received first correction signal, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{k2,c}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right).$

Wherein, γ _{K2, c}(n) calibration reference of expression the 2nd RRU is received first channel response of the subcarrier n correspondence of passage.

Wherein, obtaining first penalty coefficient according to first channel response can comprise:

${\mathrm{\&mu;}}_{k2}\left(n\right)={\mathrm{\&gamma;}}_{k2,q}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right).$

Wherein, μ _K2(n) first penalty coefficient of the corresponding subcarrier n of expression.

103, send out second correction signal of passage emission by the calibration reference of the 2nd RRU.

104, receive second penalty coefficient,

Wherein, response obtains second penalty coefficient based on second channel, and the second channel response is second correction signal that the first professional receipts passage by a RRU receives to be carried out channel estimating obtain.

Similar with the above-mentioned process of giving an example, in some embodiments of the invention, first correction signal of supposing to send out by the calibration reference of the 2nd RRU passage emission is s (n), then (suppose and select the professional passage p that receives by the first professional passage of receiving of a RRU, if the professional passage of receiving is since 0 serial number, p=0,1 ..N _ANT-1) second correction signal that receives of the subcarrier n of respective antenna

Can be:

${\tilde{r}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right)\&CenterDot;s\left(n\right).$

Wherein, by a RRU first professional receive passage p and receive second correction signal after, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, γ _{K1, p}(n) first of expression the one RRU professional second channel response of receiving the subcarrier n correspondence of passage p.

Wherein, obtaining second penalty coefficient according to second channel response can comprise:

${\mathrm{\&mu;}}_{k1}\left(n\right)={\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, μ _K1(n) second penalty coefficient of the corresponding subcarrier n of expression.

105, receive the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second, obtain second and receive correction coefficient, wherein, proofread and correct based on the second receipts correction coefficient by the service signal that the 2nd RRU receives, proofread and correct from correction coefficient based on second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, wherein, service signal by the 2nd RRU emission is proofreaied and correct based on second correction coefficient, proofreaies and correct based on the second receipts self-correcting coefficient by the service signal reception that the 2nd RRU receives.

In some embodiments of the invention, receive the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and obtain the second receipts correction coefficient, can comprise: with second penalty coefficient divided by first penalty coefficient obtaining the first relative penalty coefficient, receive the self-correcting coefficient with second and multiply by the first relative penalty coefficient to obtain the second receipts correction coefficient.

In other embodiment of the present invention, receive the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and obtain the second receipts correction coefficient, can comprise: with described first penalty coefficient divided by described second penalty coefficient obtaining the second relative penalty coefficient, with described second receive the self-correcting coefficient divided by the described second relative penalty coefficient to obtain the second receipts correction coefficient.

In some embodiments of the invention, obtain second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, can comprise: with second penalty coefficient divided by first penalty coefficient to obtain the first relative penalty coefficient, with second from correction coefficient divided by the first relative penalty coefficient to obtain second correction coefficient

In other embodiment of the present invention, obtain second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, can comprise: with first penalty coefficient divided by second penalty coefficient to obtain the second relative penalty coefficient, multiply by the second relative penalty coefficient to obtain second correction coefficient with second from correction coefficient.

Wherein, the first relative penalty coefficient is the penalty coefficient between a RRU and the 2nd RRU,

Wherein, the first relative penalty coefficient is:

Wherein, the second relative penalty coefficient is: $\widetilde{\mathrm{\&mu;}}\left(n\right)=\frac{1}{\mathrm{\&mu;}\left(n\right)}=\frac{{\mathrm{\&mu;}}_{k2}\left(n\right)}{{\mathrm{\&mu;}}_{k1}\left(n\right)}.$

Be appreciated that, the step executive agent of present embodiment such scheme can be the BBU of the 2nd RRU, the 2nd RRU correspondence, or other device (as main control unit) in the affiliated base station of the 2nd RRU, certainly, for the step that each device in the base station under the 2nd RRU (can claim second base station) is carried out, all can be described as the step that carry out the affiliated base station of the 2nd RRU.Be appreciated that the 2nd RRU and a RRU may share a BBU, or do not share a BBU.

Therefore, pass through the service channel of a RRU and the mutual correction signal of calibration reference passage of the 2nd RRU in the present embodiment respectively, obtain be used to the penalty coefficient that carries out channel compensation between RRU according to mutual correction signal, self-tuning RRU carries out the service signal compensation in conjunction with penalty coefficient, is conducive to satisfy the requirement of the spliced up-downgoing reciprocity of a plurality of RRU.This mechanism can realize a plurality of RRU are spliced to obtain more service channel RRU, so, is conducive to satisfy higher communication requirement, can take into account cost and System Expansion demand.For example existing two 2T2R being spliced into 1 4T4R, is to the existing investment reasonable use like this.

Another embodiment of RRU channel correcting method of the present invention.Wherein, another kind of RRU channel correcting method can comprise: carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence; Receiving passage with first business is reference, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence, wherein, one of them professional passage of receiving that the first professional receipts passage is a RRU; Sending out passage with first business is reference, the business of a RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, wherein, first professional one of them professional passage that passage is a RRU; Wherein the service signal of a RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient; The first professional passage of sending out by a RRU is launched first correction signal; The first professional passage of receiving by a RRU, second correction signal of passage emission is sent out in reception by the calibration reference of the 2nd RRU, estimate the second channel response according to second correction signal that receives by the first professional receipts passage, and obtaining second penalty coefficient according to second channel response, second penalty coefficient is transmitted in the base station under the 2nd RRU.

Referring to Fig. 3, Fig. 3 is the schematic flow sheet of a kind of RRU channel correcting method of providing of the embodiment of the invention.Wherein, as shown in Figure 3, a kind of RRU channel correcting method that the embodiment of the invention provides can comprise following content:

301, carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence.

In some embodiments of the invention,

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, in the above-mentioned formula, above-mentioned k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n.Wherein, above-mentioned The business of representing an above-mentioned RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU send out passage i subcarrier n correspondence first from correction coefficient.

Wherein, after carrying out the self-correcting of a RRU, can obtain the self-correcting coefficient of a RRU, the self-correcting coefficient can comprise professional passage self-correcting coefficient (can abbreviate as from correction coefficient) and the professional passage self-correcting coefficient (can abbreviate as and receive the self-correcting coefficient) of receiving sent out.Wherein, respectively service signal reception and the service signal emission of a RRU are compensated as if the receipts self-correcting coefficient that utilizes a RRU with from correction coefficient, just can satisfy the TDD system to the requirement of single RRU up-downgoing reciprocity.Be appreciated that situation is similar for carrying out self-tuning other RRU.

In some embodiments of the invention, carry out the self-correcting of a RRU after, for example can represent with following formula: $\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right)}.$

Suppose that the business of the 2nd RRU is received passage and the professional numbering of sending out passage and carried out serial number since 0 respectively, then formula 8 can show following form:

$\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}\mathrm{1,0}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{\mathrm{1,0}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}\mathrm{1,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{\mathrm{1,0}}\left(n\right)}=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>\; </figure-callout>}\mathrm{1,1}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{\mathrm{1,1}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">\; <figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>\; </figure-callout>}\mathrm{1,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{\mathrm{1,1}}\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,N_{\mathrm{ANT}}-1}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,N_{\mathrm{ANT}}-1}\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right)}.$

Wherein, N _ANTThe professional sum of receiving passage of expression wherein, is numbered identical business receipts passage and can be shared the same antenna with the professional passage of sending out, wherein, and for example

The channel response of business receipts passage 0 on subcarrier n of representing a RRU,

Represent that the business of a RRU sends out the channel response of passage 0 on subcarrier n.Wherein,

The business of representing a RRU receive passage 0 subcarrier n correspondence first receive the self-correcting coefficient,

The business of representing a RRU send out passage 0 subcarrier n correspondence first from correction coefficient, by that analogy.

In some embodiments of the invention, the transmit-receive combination self-correcting factor beta of a RRU _{K1, i}(n) can be expressed as the receipts self-correcting coefficient of a RRU and from the ratio of correction coefficient:

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)};$

If use transmit-receive combination self-correcting factor beta _{K1, i}(n) represent, can represent with following formula after then carrying out the 2nd RRU self-correcting:

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}\left(n\right)\frac{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right)};$

302, receiving passage with first business is reference, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence, wherein, one of them professional passage of receiving that the first professional receipts passage is a RRU.

In some embodiments of the invention, be reference with the first professional receipts passage, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, p represents the numbering in the first professional collection of letters road, and is above-mentioned

The business of representing a RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive correction coefficient.

Wherein, ${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)}.$

Be appreciated that Equal 1.

303, be reference with first professional passage, the business of a RRU sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, wherein, first professional one of them professional passage of sending out that passage is a RRU; Wherein, the service signal of a RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient; The first professional passage of sending out by a RRU is launched first correction signal.

In some embodiments of the invention, be reference with first professional passage, the business of a RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, can comprise:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, above-mentioned p represents the first professional numbering of sending out passage, and is above-mentioned The business of representing a RRU send out passage p subcarrier n correspondence first from correction coefficient, above-mentioned

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

Wherein, ${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)}.$

Be appreciated that

Equal 1.

304, receive passage by first business of a RRU, second correction signal of passage emission is sent out in reception by the calibration reference of the 2nd RRU, estimate the second channel response according to second correction signal that receives by the first professional receipts passage, and obtaining second penalty coefficient according to second channel response, second penalty coefficient is transmitted in the base station under the 2nd RRU.

In some embodiments of the invention, first correction signal of supposing to send out by the calibration reference of the 2nd RRU passage emission is s (n), then professionally receives passage (the professional passage p that receives is selected in supposition by first of a RRU, if the professional passage of receiving is since 0 serial number, p=0,1 ..N _ANT-1) second correction signal that receives of the subcarrier n of respective antenna

Can be:

${\tilde{r}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right)\&CenterDot;s\left(n\right).$

Wherein, by a RRU first professional receive passage p and receive second correction signal after, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, γ _{K1, p}(n) first of expression the one RRU professional second channel response of receiving the subcarrier n correspondence of passage p.

Wherein, obtaining second penalty coefficient according to second channel response can comprise:

${\mathrm{\&mu;}}_{k1}\left(n\right)={\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, μ _K1(n) second penalty coefficient of the corresponding subcarrier n of expression.

Being appreciated that does not have inevitable priority execution sequence between step 302 ~ step 304, can carry out synchronously or can asynchronous execution or intersect and carry out.

In some embodiments of the invention, carry out the joint channel correction if also introduce the 3rd RRU, then said method also can comprise: the first professional passage of sending out by a RRU is launched the 3rd correction signal;

The first professional passage of receiving by a RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of the 3rd RRU, estimate the 4th channel response according to the 4th correction signal that receives by the first professional receipts passage, and obtaining the 4th penalty coefficient according to the 4th channel response, the 4th penalty coefficient is transmitted in the base station under the 3rd RRU.

In some embodiments of the invention, behavior self-correcting and the relative correction mode of base station can be similar with the behavior of base station under the RRU under the 3rd RRU, and compensation behavior can be similar with the behavior of base station under the 2nd RRU between RRU.

The base station concrete operations can be as follows under the 3rd RRU:

Carry out the passage self-correcting of the 3rd RRU, receive self-correcting coefficient and the 3rd from correction coefficient to obtain the 3rd of the 3rd RRU correspondence; Receiving passage with the 3rd business is reference, the business of the 3rd RRU is received passage carry out the passage relative correction to obtain the 3rd receipts correction coefficient of the 3rd RRU correspondence, wherein, one of them professional passage of receiving that the 3rd professional receipts passage is the 3rd RRU; Sending out passage with the 3rd business is reference, the business of the 3rd RRU is sent out passage carry out the passage relative correction to obtain the 3rd correction coefficient of the 3rd RRU correspondence, wherein, the 3rd professional one of them professional passage that passage is the 3rd RRU; The 3rd professional passage of receiving by the 3rd RRU, receive first base station by first professional the 3rd correction signal of sending out the passage emission of a RRU, estimate the 3rd channel response according to the 3rd correction signal that receives by the 3rd professional receipts passage, and obtain the 3rd penalty coefficient according to the 3rd channel response; By the 3rd professional the 4th correction signal of sending out the passage emission of the 3rd RRU, and receive the 4th penalty coefficient that first base station sends; Based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 3rd receipts correction coefficient of upgrading by the service signal that the 3rd RRU receives, proofread and correct based on the 3rd correction coefficient by the service signal of the 3rd RRU emission; Perhaps, based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd correction coefficient that has obtained upgraded, wherein, service signal by the 3rd RRU emission is proofreaied and correct based on the 3rd correction coefficient of upgrading, and proofreaies and correct based on the 3rd receipts correction coefficient by the service signal reception that the 3rd RRU receives.

In some embodiments of the invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient obtaining third phase to penalty coefficient, the 3rd receive correction coefficient and multiply by third phase penalty coefficient the 3rd is received correction coefficient with what obtain upgrading what obtained.

In other embodiment of the present invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient obtaining the 4th relative penalty coefficient, the 3rd receive correction coefficient divided by the three receipts correction coefficient of the 4th relative penalty coefficient to obtain upgrading with what obtained.

In some embodiments of the invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient to obtain third phase to penalty coefficient, with the 3rd correction coefficient having obtained divided by third phase to three correction coefficient of penalty coefficient to obtain upgrading

In other embodiment of the present invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient to obtain the 4th relative penalty coefficient, the 3rd correction coefficient that has obtained be multiply by three correction coefficient of the 4th relative penalty coefficient to obtain upgrading.

In some embodiments of the invention, carry out the joint channel correction if also introduce the 4th RRU, then said method also can comprise:

The 4th professional passage of sending out by a RRU is launched the 5th correction signal;

The 4th professional passage of receiving by a RRU receives the 6th correction signal of sending out the passage emission by the 5th business of the 4th RRU, estimate the 6th channel response according to the 6th correction signal that receives by the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to the 6th channel response, the 6th penalty coefficient is transmitted in the base station under the 4th RRU.

Wherein, the reception of the service signal of a RRU is proofreaied and correct based on the first receipts correction coefficient and is comprised:

The professional service signal of receiving passage of each of the one RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a RRU.

Wherein, the emission of the service signal of a RRU is proofreaied and correct based on first correction coefficient and is comprised:

The professional service signal emission of sending out passage of each of the one RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a RRU based on each professional first correction coefficient sending out the passage correspondence.

In some embodiments of the invention, the behavior of the affiliated base station of the behavior of base station and the 3rd RRU is similar under the 4th RRU.The base station concrete operations can be as follows under the 4th RRU:

Carry out the passage self-correcting of the 4th RRU, receive self-correcting coefficient and the 4th from correction coefficient to obtain the 4th of the 4th RRU correspondence; Receiving passage with the 5th business is reference, the business of the 4th RRU is received passage carry out the passage relative correction to obtain the 4th receipts correction coefficient of the 4th RRU correspondence, wherein, one of them professional passage of receiving that the 5th professional receipts passage is the 4th RRU; Sending out passage with the 5th business is reference, the business of the 4th RRU is sent out passage carry out the passage relative correction, and to obtain the 4th correction coefficient of the 4th RRU correspondence, wherein, the 5th professional one of them professional passage that passage is the 4th RRU; The 5th professional passage of receiving by RRU, receive first base station by the 4th professional the 5th correction signal of sending out the passage emission of a RRU, estimate the 5th channel response according to the 5th correction signal that receives by the 5th professional receipts passage, and obtain the 5th penalty coefficient according to the 5th channel response; By the 5th professional the 6th correction signal of sending out the passage emission of the 4th RRU, and receive the 6th penalty coefficient that first base station sends; Based on the 5th penalty coefficient and the 6th penalty coefficient the 4th receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 4th receipts correction coefficient of upgrading by the service signal that the 4th RRU receives, proofread and correct based on the 4th correction coefficient by the service signal of the 4th RRU emission; Perhaps, based on the 5th penalty coefficient and the 6th penalty coefficient the 4th correction coefficient that has obtained upgraded, wherein, service signal by the 4th RRU emission is proofreaied and correct based on the 4th correction coefficient of upgrading, and proofreaies and correct based on the 4th receipts correction coefficient by the service signal reception that the 4th RRU receives.

Be appreciated that by introducing the 3rd RRU and the 4th RRU, can be conducive to realize building of complicated cell base station system, and then be conducive to the elevator system capacity.

Be appreciated that, the step executive agent of present embodiment such scheme can be the BBU of a RRU, a RRU correspondence, or other device (as main control unit) in the affiliated base station of a RRU, certainly, for the step that each device in the base station under the RRU (can claim first base station) is carried out, all can be described as the step that carry out the affiliated base station of a RRU.Be appreciated that the 2nd RRU and a RRU may share a BBU, or do not share a BBU.Certainly, the 3rd RRU and the 4th RRU also can share BBU, even a RRU, the 2nd RRU, the 3rd RRU and the 4th RRU also can share BBU, can be deployed in same position or diverse location.The one RRU, the 2nd RRU, the 3rd RRU and the 4th RRU be the RRU of corresponding identical or different residential quarter also.

Therefore, pass through the service channel of a RRU and the mutual correction signal of calibration reference passage of the 2nd RRU in the present embodiment respectively, obtain be used to the penalty coefficient that carries out channel compensation between RRU according to mutual correction signal, self-tuning RRU carries out the service signal compensation in conjunction with penalty coefficient, is conducive to satisfy the requirement of the spliced up-downgoing reciprocity of a plurality of RRU.This mechanism can realize a plurality of RRU are spliced to obtain more service channel RRU, so, is conducive to satisfy higher communication requirement, can take into account cost and System Expansion demand.For example existing two 2T2R being spliced into 1 4T4R, is to the existing investment reasonable use like this.

For ease of better understanding and implement the such scheme of the embodiment of the invention, carry out RRU joint channel trimming process below by give an example first base station and second base station and describe.

Suppose that a RRU belongs to first base station, the 2nd RRU belongs to second base station, wherein, if a RRU and the 2nd RRU shared baseband processing unit BBU, then first base station and second base station can be thought same base station or be deployed in together base station, certainly, first base station and second base station also are deployed in the different base station of diverse geographic location.

In some embodiments of the invention, the structure example of the 2nd RRU RRU shown in Fig. 2-a, the structure example of second base station is shown in Fig. 2-a, wherein the 2nd RRU can comprise: the calibration reference passage (wherein, the calibration reference passage comprises that calibration reference is received passage and calibration reference is sent out passage), a plurality of service channels (wherein, service channel can comprise professional passage and the professional passage of receiving received), 2 signal coupling units, the signal of signal coupling unit port 0 can send to port one and/or port 2, simultaneously, the signal of port one and/or port 2 can send to port 0, and the signal coupling unit can comprise mixer along separate routes, electronic switch, directional coupler, attenuator etc., and the first signal coupling unit structure can be different with the second coupling unit structure.Wherein, the structure of a RRU can be shown in Fig. 2-a or Fig. 2-b.

Referring to Fig. 4, Fig. 4 is the schematic flow sheet of a kind of RRU channel correcting method of providing of the embodiment of the invention.Wherein, as shown in Figure 4, a kind of RRU channel correcting method that the embodiment of the invention provides can comprise following content:

401, the passage self-correcting of a RRU is carried out in first base station, receives self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence; The passage self-correcting of the 2nd RRU is carried out in second base station, receives self-correcting coefficient and second from correction coefficient to obtain second of the 2nd RRU correspondence.

Suppose the k1 that is numbered of a RRU, the 2nd RRU is numbered k2.

In some embodiments of the invention,

${\mathrm{\&beta;}}_{k,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_k^{\mathrm{ct}}\left(n\right)h_{k,i}^r\left(n\right)};$

${\mathrm{\&beta;}}_{k,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_k^{\mathrm{cr}}\left(n\right)h_{k,i}^t\left(n\right)}.$

Wherein, in the above-mentioned formula, k represents the numbering (if k equals k1, identifying a RRU, if k equals k2 and represents the 2nd RRU) of RRU, The business of expression RRU k is received the channel response of passage i on subcarrier n,

The calibration reference of expression RRU k is received the channel response of passage on subcarrier n,

The calibration reference of expression RRU k is sent out the channel response of passage on subcarrier n,

The business of expression RRU k is sent out the channel response of passage i on subcarrier n.Wherein,

The business of expression RRU k is received the second receipts self-correcting coefficient of the subcarrier n correspondence of passage i,

The business of expression RRU k send out passage i subcarrier n correspondence second from correction coefficient.

Wherein, after carrying out the self-correcting of a RRU and the 2nd RRU, can obtain the self-correcting coefficient of a RRU and the 2nd RRU respectively, the self-correcting coefficient can comprise professional passage self-correcting coefficient (can abbreviate as from correction coefficient) and the professional passage self-correcting coefficient (can abbreviate as and receive the self-correcting coefficient) of receiving sent out.Wherein, respectively service signal reception and the service signal emission of a RRU and the 2nd RRU are compensated as if the receipts self-correcting coefficient that utilizes a RRU and the 2nd RRU with from correction coefficient, just can satisfy the TDD system to the requirement of single RRU up-downgoing reciprocity.

In some embodiments of the invention, carry out RRU(the one RRU and the 2nd RRU) self-correcting after, for example can represent with following formula:

$\frac{{\mathrm{\&beta;}}_{k,i}^{\mathrm{UL}}\left(n\right)h_{k,i}^r\left(n\right)}{{\mathrm{\&beta;}}_{k,i}^{\mathrm{DL}}\left(n\right)h_{k,i}^t\left(n\right)}=\frac{h_k^{\mathrm{cr}}\left(n\right)}{h_k^{\mathrm{ct}}\left(n\right)}.$

Wherein, the business that numbering is identical is received passage and can be shared the same antenna with the professional passage of sending out.

In some embodiments of the invention, RRU(the one RRU and the 2nd RRU) transmit-receive combination self-correcting factor beta _{K, i}(n) can be expressed as the receipts self-correcting coefficient of this RRU and from the ratio of correction coefficient:

${\mathrm{\&beta;}}_{k,i}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{k,i}^{\mathrm{DL}}\left(n\right)}.$

If use transmit-receive combination self-correcting factor beta _{K, i}(n) represent, can represent with following formula after then carrying out the RRU self-correcting:

${\mathrm{\&beta;}}_{k,i}\left(n\right)\frac{h_{k,i}^r\left(n\right)}{h_{k,i}^t\left(n\right)}=\frac{h_k^{\mathrm{cr}}\left(n\right)}{h_k^{\mathrm{ct}}\left(n\right)}.$

402, first base station is reference with the first business receipts passage, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence, and wherein, one of them business that the first professional receipts passage is a RRU is received passage.

In some embodiments of the invention, professional to receive passage be reference with first in first base station, the business of a RRU received passage carry out the passage relative correction and receive correction coefficient and can comprise to obtain first of a RRU correspondence:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, p represents the numbering in the first professional collection of letters road, and is above-mentioned

The business of representing a RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive correction coefficient.

Wherein, ${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)}.$

Be appreciated that

Equal 1.

403, first base station is reference with first professional passage, the business of a RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence.

Wherein, first professional one of them professional passage of sending out that passage is a RRU; Wherein, the service signal of a RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient; The first professional passage of sending out by a RRU is launched first correction signal.

In some embodiments of the invention, professional to send out a passage be reference with first in first base station, the business of a RRU sent out passage carry out the passage relative correction and comprise with first the correction coefficient cocoa that obtains a RRU correspondence:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, above-mentioned p represents the first professional numbering of sending out passage, and is above-mentioned The business of representing a RRU send out passage p subcarrier n correspondence first from correction coefficient, above-mentioned

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

Wherein, ${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)}.$

Be appreciated that

Equal 1.

404, first correction signal is launched by the first professional passage of sending out of a RRU in first base station;

405, second base station is received passage by the calibration reference of the 2nd RRU and is received first base station by first professional first correction signal of sending out the passage emission of a RRU, estimate first channel response according to first correction signal that receives, and obtain first penalty coefficient according to first channel response.

In some embodiments of the invention, suppose first base station by a RRU first professional send out passage (the professional passage p of sending out is selected in supposition, if the professional passage of sending out is since 0 serial number, p=0 then, 1 ..N _ANT-1) first correction signal of respective antenna emission is s (n), then the calibration reference of second base station by the 2nd RRU received first correction signal that n subcarrier of the antenna (this antenna is the antenna of reusable service channel correspondence for example, or the antenna for disposing separately) of passage correspondence receives

Can be:

${\tilde{r}}_{k2,c}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;s\left(n\right).$

Wherein, h _{Comm, k2, k1}(n) first service channel to the, the two RRU calibration references of expression the one RRU are received the channel response of communication media between the passage, communication media comprises wireless channel at least, radio frequency cable, antenna etc., pass through radio frequency cable between first service channel to the, the two RRU calibration reference passages as a RRU, antenna, wireless channel communicates, h _{Comm, k2, k1}(n) be radio frequency cable, antenna and the response of wireless channel composite channel.For TDD system, h _{Comm, k1, k2}(n)=h _{Comm, k2, k1}(n).

The reception signal of representing the calibration reference receipts passage of the 2nd RRU.

Wherein, after the calibration reference by the 2nd RRU is received passage and received first correction signal, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{k2,c}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right).$

Wherein, γ _{K2, c}(n) calibration reference of expression the 2nd RRU is received first channel response of the subcarrier n correspondence of passage.

Wherein, obtaining first penalty coefficient according to first channel response can comprise:

${\mathrm{\&mu;}}_{k2}\left(n\right)={\mathrm{\&gamma;}}_{k2,q}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right).$

Wherein, μ _K2(n) first penalty coefficient of the corresponding subcarrier n of expression.

406, second base station is sent out passage by the calibration reference of the 2nd RRU and is launched second correction signal;

407, first base station receives the passage emission is sent out in second base station by the calibration reference of the 2nd RRU second correction signal by the first professional passage of receiving of a RRU, estimate the second channel response according to second correction signal that receives, and obtain second penalty coefficient according to second channel response, transmit second penalty coefficient to second base station.

In some embodiments of the invention, suppose, first correction signal that the passage emission is sent out by the calibration reference of the 2nd RRU in second base station is s (n), then first base station is by first professional passage (the professional passage p that receives of supposition selection that receives of a RRU, if the professional passage of receiving is since 0 serial number, p=0,1 ..N _ANT-1) second correction signal that receives of the subcarrier n of respective antenna

Can be:

${\tilde{r}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right)\&CenterDot;s\left(n\right).$

Wherein, by a RRU first professional receive passage p and receive second correction signal after, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, γ _{K1, p}(n) first of expression the one RRU professional second channel response of receiving the subcarrier n correspondence of passage p.

Wherein, obtaining second penalty coefficient according to second channel response can comprise:

${\mathrm{\&mu;}}_{k1}\left(n\right)={\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, μ _K1(n) second penalty coefficient of the corresponding subcarrier n of expression.

408, second base station is received the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and is obtained the second receipts correction coefficient, wherein, proofread and correct based on the second receipts correction coefficient by the service signal that the 2nd RRU receives, proofread and correct from correction coefficient based on second by the service signal of the 2nd RRU emission; Perhaps, second base station obtains second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, wherein, service signal by the 2nd RRU emission is proofreaied and correct based on second correction coefficient, proofreaies and correct based on the second receipts self-correcting coefficient by the service signal reception that the 2nd RRU receives.

In some embodiments of the invention, second base station is received the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and is obtained the second receipts correction coefficient, can comprise: with second penalty coefficient divided by first penalty coefficient obtaining the first relative penalty coefficient, receive the self-correcting coefficient with second and multiply by the first relative penalty coefficient to obtain the second receipts correction coefficient.

In other embodiment of the present invention, second base station is received the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and is obtained the second receipts correction coefficient, can comprise: with described first penalty coefficient divided by described second penalty coefficient obtaining the second relative penalty coefficient, with described second receive the self-correcting coefficient divided by the described second relative penalty coefficient to obtain the second receipts correction coefficient.

In some embodiments of the invention, second base station obtains second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, can comprise: with second penalty coefficient divided by first penalty coefficient to obtain the first relative penalty coefficient, with second from correction coefficient divided by the first relative penalty coefficient to obtain second correction coefficient

In other embodiment of the present invention, second base station obtains second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, can comprise: with first penalty coefficient divided by second penalty coefficient to obtain the second relative penalty coefficient, multiply by the second relative penalty coefficient to obtain second correction coefficient with second from correction coefficient.

Be appreciated that and do not have inevitable execution sequencing between above-mentioned some step.For example do not have inevitable execution sequencing between step 402 ~ 405 and step 406 ~ 407, can carry out synchronously or asynchronous execution or the execution that intersects.Do not have inevitable execution sequencing between step 402, step 403, step 404 ~ 405 and step 406 ~ 407, can carry out synchronously or asynchronous execution or the execution that intersects.

Be appreciated that first base station can operate according to mode of operation embodiment illustrated in fig. 3.And second base station can be operated according to mode of operation embodiment illustrated in fig. 1, and concrete associative operation also can be with reference to the description of above-described embodiment.

Therefore, present embodiment first base station and second base station are respectively by the service channel of a RRU and the mutual correction signal of calibration reference passage of the 2nd RRU, obtain be used to the penalty coefficient that carries out channel compensation between RRU according to mutual correction signal, self-tuning RRU carries out the service signal compensation in conjunction with penalty coefficient, is conducive to satisfy the requirement of the spliced up-downgoing reciprocity of a plurality of RRU.This mechanism can realize a plurality of RRU are spliced to obtain the RRU of more service channel, so, is conducive to satisfy higher communication requirement, can take into account cost and System Expansion demand.For example existing two 2T2R being spliced into 1 4T4R, is to the existing investment reasonable use like this.

At present, multipoint cooperative (CoMP, Coordinative Multiple Point) utilizes the CoMP technology can effectively resist the interference problem of LTE cell edge as the key characteristic of Long Term Evolution plan (LTE, Long Term Evolution).It is a kind of as the CoMP technology to unite transmission (JT, Joint Transmission) technology, can significantly improve cell edge and on average handles up.In order in the TDD system, to obtain the gain that the JT technology is brought, need carry out channel correcting equally.Discover that different with single residential quarter wave beam forming technology is that the ratio of the up-downgoing radio-frequency channel of each antenna correspondence of a plurality of residential quarters of JT Technology Need is identical.Even each residential quarter has been carried out channel correcting respectively, if do not carry out the correction of minizone, the JT technology still can not arrive expected performance.Based on the channel combined correction mechanism that the embodiment of the invention provides, be conducive to make the JT technology to reach more high-performance.Based on embodiment of the invention scheme, finish channel combined correction between the RRU of a plurality of residential quarters correspondence of cooperation emission, thereby can obtain higher array gain and spatial multiplexing gain.

Referring to Fig. 5, the embodiment of the invention provides a kind of RRU channel correcting device 500, can comprise:

Self-correcting unit 510, first receiving element 520, estimation unit 530, transmitter unit 540, second receiving element 550 and correcting unit 560.

Wherein, self-correcting unit 510 is used for carrying out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of the 2nd RRU correspondence;

First receiving element 520 is used for receiving passage by the calibration reference of the 2nd RRU, receives first professional first correction signal of sending out the passage emission by a RRU;

Estimation unit 530 is used for estimating first channel response according to first correction signal that the calibration reference receipts passage by the 2nd RRU receives, and obtains first penalty coefficient according to first channel response;

Transmitter unit 540 is used for sending out second correction signal that passage is launched by the calibration reference of the 2nd RRU;

Second receiving element 550, be used for receiving second penalty coefficient, wherein, response obtains second penalty coefficient based on second channel, and the second channel response is second correction signal that the first professional receipts passage by a RRU receives to be carried out channel estimating obtain;

Correcting unit 560, be used for receiving the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the second receipts correction coefficient by the service signal that the 2nd RRU receives, proofread and correct from correction coefficient based on second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, wherein, service signal by the 2nd RRU emission is proofreaied and correct based on second correction coefficient, proofreaies and correct based on the second receipts self-correcting coefficient by the service signal reception that the 2nd RRU receives.

In some embodiments of the invention, self-correcting unit 510 can specifically be used for, carry out the passage self-correcting of the 2nd RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of the 2nd RRU second from correction coefficient, and each business that obtains the 2nd RRU is received second receipts self-correcting coefficient of each subcarrier correspondence of passage, wherein

${\mathrm{\&beta;}}_{k2,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{ct}}\left(n\right)h_{k2,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k2,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{cr}}\left(n\right)h_{k2,i}^t\left(n\right)};$

Wherein, above-mentioned k2 represents the numbering of the 2nd RRU, and is above-mentioned

Represent the channel response of business receipts passage i on subcarrier n of the 2nd RRU, above-mentioned Represent the channel response of above-mentioned calibration reference receipts passage on subcarrier n of the 2nd RRU, above-mentioned

Represent that the above-mentioned calibration reference of the 2nd RRU sends out the channel response of passage on subcarrier n, above-mentioned

Represent that the business of the 2nd RRU sends out the channel response of passage i on subcarrier n;

Wherein, above-mentioned

The business of representing the 2nd RRU receive passage i subcarrier n correspondence second receive the self-correcting coefficient, above-mentioned

The business of representing the 2nd RRU send out passage i subcarrier n correspondence second from correction coefficient.

In some embodiments of the invention, correcting unit 560 can specifically be used for,

Receive the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and obtain the second receipts correction coefficient, comprise: with second penalty coefficient divided by first penalty coefficient obtaining the first relative penalty coefficient, receive the self-correcting coefficient with second and multiply by the first relative penalty coefficient to obtain the second receipts correction coefficient; Perhaps, with first penalty coefficient divided by second penalty coefficient obtaining the second relative penalty coefficient, with second receive the self-correcting coefficient divided by the second relative penalty coefficient to obtain the second receipts correction coefficient;

In other embodiment of the present invention, correcting unit 560 can specifically be used for,

Obtain second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, comprise: with second penalty coefficient divided by first penalty coefficient obtaining the first relative penalty coefficient, with second from correction coefficient divided by the first relative penalty coefficient to obtain second correction coefficient; Perhaps, with first penalty coefficient divided by second penalty coefficient to obtain the second relative penalty coefficient, multiply by the second relative penalty coefficient to obtain second correction coefficient with second from correction coefficient.

Be understandable that the function of each functional module of the RRU channel correcting device 500 of present embodiment can be according to the method specific implementation among the said method embodiment, its specific implementation process can repeat no more with reference to the associated description of said method embodiment herein.Wherein, RRU channel correcting device 500 for example can be other device in the base station under BBU, controller or the 2nd RRU itself or the 2nd RRU.

Referring to Fig. 6, the embodiment of the invention provides a kind of base station 600, can comprise:

As shown in Figure 6, the base station 600 of present embodiment comprises at least one bus 601, at least one processor 602 that links to each other with bus 601 and at least one memory 603 that links to each other with bus 601.

Wherein, processor 602 calls the code of storage in the memory 603 to be used for by bus 601, carries out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of the 2nd RRU correspondence;

Calibration reference by the 2nd RRU is received passage, receive first professional first correction signal of sending out the passage emission by a RRU, first correction signal that receives according to the calibration reference receipts passage by the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to first channel response;

Send out second correction signal of passage emission by the calibration reference of the 2nd RRU, and receive second penalty coefficient, wherein, response obtains second penalty coefficient based on second channel, and the second channel response is second correction signal that the first professional receipts passage by a RRU receives to be carried out channel estimating obtain;

Receive the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the second receipts correction coefficient by the service signal that the 2nd RRU receives, proofread and correct from correction coefficient based on second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, wherein, service signal by the 2nd RRU emission is proofreaied and correct based on second correction coefficient, proofreaies and correct based on the second receipts self-correcting coefficient by the service signal reception that the 2nd RRU receives.

In some embodiments of the invention, processor 602 is carried out the passage self-correcting of the 2nd RRU, receive self-correcting coefficient and second from correction coefficient to obtain second of the 2nd RRU correspondence, comprise: carry out the passage self-correcting of the 2nd RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of the 2nd RRU second from correction coefficient, and obtain second of professional each the subcarrier correspondence of receiving passage of each of the 2nd RRU and receive self-correcting coefficient, wherein

${\mathrm{\&beta;}}_{k2,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{ct}}\left(n\right)h_{k2,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k2,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{cr}}\left(n\right)h_{k2,i}^t\left(n\right)};$

Wherein, above-mentioned k2 represents the numbering of the 2nd RRU, and is above-mentioned

Represent the channel response of business receipts passage i on subcarrier n of the 2nd RRU, above-mentioned

Represent the channel response of above-mentioned calibration reference receipts passage on subcarrier n of the 2nd RRU, above-mentioned

Represent that the above-mentioned calibration reference of the 2nd RRU sends out the channel response of passage on subcarrier n, above-mentioned

Represent that the business of the 2nd RRU sends out the channel response of passage i on subcarrier n;

Wherein, above-mentioned

The business of representing the 2nd RRU receive passage i subcarrier n correspondence second receive the self-correcting coefficient, above-mentioned

The business of representing the 2nd RRU send out passage i subcarrier n correspondence second from correction coefficient.

In some embodiments of the invention, processor 602 is received the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and is obtained the second receipts correction coefficient, comprise: with second penalty coefficient divided by first penalty coefficient obtaining the first relative penalty coefficient, receive the self-correcting coefficient with second and multiply by the first relative penalty coefficient to obtain the second receipts correction coefficient; Perhaps, with first penalty coefficient divided by second penalty coefficient obtaining the second relative penalty coefficient, with second receive the self-correcting coefficient divided by the second relative penalty coefficient to obtain the second receipts correction coefficient.

In other embodiment of the present invention, processor 602 obtains second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, comprise: with second penalty coefficient divided by first penalty coefficient obtaining the first relative penalty coefficient, with second from correction coefficient divided by the first relative penalty coefficient to obtain second correction coefficient; Perhaps, with first penalty coefficient divided by second penalty coefficient to obtain the second relative penalty coefficient, multiply by the second relative penalty coefficient to obtain second correction coefficient with second from correction coefficient.

Be understandable that the function of each functional module of the base station 600 of present embodiment can be according to the method specific implementation among the said method embodiment, its specific implementation process can repeat no more with reference to the associated description of said method embodiment herein.

For example the working method of base station 600 can be as second base station among the above-mentioned embodiment.

Referring to Fig. 7, the embodiment of the invention provides a kind of RRU channel correcting device 700, can comprise:

Self-correcting unit 710, the first relative correction unit 720, the second relative correction unit 730, first transmitter unit 740, receiving element 750, estimation unit 760 and second transmitter unit 770.

Wherein, self-correcting unit 710 is used for carrying out the passage self-correcting of a RRU, receives self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence;

The first relative correction unit 720, being used for the first professional receipts passage is reference, the business of the one RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence, wherein, one of them professional passage of receiving that the first professional receipts passage is a RRU;

The second relative correction unit 730, sending out passage with first business is reference, the business of the one RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, wherein, first professional one of them professional passage of sending out that passage is a RRU; Wherein, the service signal of a RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient;

First transmitter unit 740 is used for launching first correction signal by the first professional passage of sending out of a RRU;

Receiving element 750 is used for the first professional passage of receiving by a RRU, receives second correction signal of sending out the passage emission by the calibration reference of the 2nd RRU,

Estimation unit 760 be used for estimating the second channel response according to above-mentioned receiving element by second correction signal that the first professional receipts passage receives, and response obtains second penalty coefficient according to second channel;

Second transmitter unit 770 transmits second penalty coefficient for base station under the 2nd RRU.

In some embodiments of the invention, self-correcting unit 710 can specifically be used for, carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a RRU first from correction coefficient, and each business that obtains a RRU is received first receipts self-correcting coefficient of each subcarrier correspondence of passage, wherein

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, above-mentioned k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU send out passage i subcarrier n correspondence first from correction coefficient.

In some embodiments of the invention, the first relative correction unit 710 can specifically be used in the following way, is reference with the first professional receipts passage, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence, wherein

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, above-mentioned p represents the numbering in the first professional collection of letters road, and is above-mentioned

The business of representing a RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive correction coefficient.

In some embodiments of the invention, the second relative correction unit 730 can specifically be used for, in the following way, sending out passage with first business is reference, the business of the one RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, wherein

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, above-mentioned p represents the first professional numbering of sending out passage, and is above-mentioned

The business of representing a RRU send out passage p subcarrier n correspondence first from correction coefficient, above-mentioned

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

In some embodiments of the invention, first transmitter unit 740 also can be used for, and launches the 3rd correction signal by the first professional passage of sending out of a RRU;

Receiving element 750 also can be used for, and sends out the 4th correction signal that passage is launched by the first professional receipts passage reception of a RRU by the 3rd business of the 3rd RRU,

Estimation unit 760 also can be used for, and estimates the 4th channel response according to the 4th correction signal that receives by the first professional receipts passage, and obtains the 4th penalty coefficient according to the 4th channel response;

Second transmitter unit 770 also is used for, and the 4th penalty coefficient that estimation unit 760 obtains is transmitted in the base station under the 3rd RRU.

In some embodiments of the invention, first transmitter unit 740 also is used for, and launches the 5th correction signal by the 4th professional passage of sending out of a RRU;

Receiving element 750 also is used for, and sends out the 6th correction signal that passage is launched by the 4th professional receipts passage reception of a RRU by the 5th business of the 4th RRU,

Estimation unit 760 also is used for, and estimates the 6th channel response according to the 6th correction signal that receives by the 4th professional receipts passage, and obtains the 6th penalty coefficient according to the 6th channel response;

Second transmitter unit 770 also is used for, and the 6th penalty coefficient is transmitted in the base station under the RRU;

Wherein, the professional service signal of receiving passage of each of a RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a RRU; The professional service signal emission of sending out passage of each of the one RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a RRU based on each professional first correction coefficient sending out the passage correspondence.

Be understandable that the function of each functional module of the RRU channel correcting device 700 of present embodiment can be according to the method specific implementation among the said method embodiment, its specific implementation process can repeat no more with reference to the associated description of said method embodiment herein.Wherein, RRU channel correcting device 500 for example can be other device in the base station under BBU, controller or a RRU itself or the RRU.

Referring to Fig. 8, the embodiment of the invention provides a kind of base station 800, can comprise:

As shown in Figure 8, the base station 800 of present embodiment comprises at least one bus 801, at least one processor 802 that links to each other with bus 801 and at least one memory 803 that links to each other with bus 801.

Wherein, processor 802 is by bus 801, and the code that calls storage in the memory 803 to be being used for,

Carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence;

Receiving passage with first business is reference, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence, wherein, one of them professional passage of receiving that the first professional receipts passage is a RRU;

Sending out passage with first business is reference, the business of a RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, wherein, first professional one of them professional passage that passage is a RRU; Wherein, the service signal of a RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient;

The first professional passage of sending out by a RRU is launched first correction signal;

The first professional passage of receiving by a RRU, second correction signal of passage emission is sent out in reception by the calibration reference of the 2nd RRU, estimate the second channel response according to second correction signal that receives by the first professional receipts passage, and obtaining second penalty coefficient according to second channel response, second penalty coefficient is transmitted in the base station under the 2nd RRU.

In some embodiments of the invention, processor 602 is carried out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence, comprise: carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a RRU first from correction coefficient, and obtain first of professional each the subcarrier correspondence of receiving passage of each of a RRU and receive self-correcting coefficient, wherein

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, above-mentioned k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU, The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, above-mentioned The business of representing a RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU send out passage i subcarrier n correspondence first from correction coefficient.

In some embodiments of the invention, processor 602 is reference with the first professional receipts passage, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, above-mentioned p represents the numbering in the first professional collection of letters road, and is above-mentioned

The business of representing a RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive correction coefficient.

In some embodiments of the invention, processor 602 is reference with first professional passage, the business of a RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, above-mentioned p represents the first professional numbering of sending out passage, and is above-mentioned

The business of representing a RRU send out passage p subcarrier n correspondence first from correction coefficient, above-mentioned

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

In other embodiment of the present invention, processor 602 also can be launched the 3rd correction signal by the first professional passage of sending out of a RRU; The first professional passage of receiving by a RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of the 3rd RRU, estimate the 4th channel response according to the 4th correction signal that receives by the first professional receipts passage, and obtaining the 4th penalty coefficient according to the 4th channel response, the 4th penalty coefficient is transmitted in the base station under the 3rd RRU.

In other embodiment of the present invention, processor 602 also can be launched the 5th correction signal by the 4th professional passage of sending out of a RRU; The 4th professional passage of receiving by a RRU receives the 6th correction signal of sending out the passage emission by the 5th business of the 4th RRU, estimate the 6th channel response according to the 6th correction signal that receives by the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to the 6th channel response, the 6th penalty coefficient is transmitted in the base station under the 4th RRU.

Wherein, the service signal reception of the one RRU is proofreaied and correct based on the first receipts correction coefficient and comprised: the professional service signal of receiving passage of each of a RRU receives, and receives the 4th professional ratio of receiving the first corresponding receipts correction coefficient of passage of correction coefficient and a RRU based on first of each business receipts passage correspondence and proofreaies and correct.

Wherein, the service signal emission of the one RRU is proofreaied and correct based on first correction coefficient and is comprised: the professional service signal emission of sending out passage of each of a RRU, proofread and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a RRU based on each professional first correction coefficient sending out the passage correspondence.

Be understandable that the function of each functional module of the base station 800 of present embodiment can be according to the method specific implementation among the said method embodiment, its specific implementation process can repeat no more with reference to the associated description of said method embodiment herein.For example the working method of base station 800 can be as first base station among the above-mentioned embodiment.

Referring to Fig. 9, the embodiment of the invention also provides a kind of communication system, can comprise:

First base station 910 and second base station 920.

Wherein, first base station 910 is used for carrying out the passage self-correcting of a RRU, receives self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence; Receiving passage with first business is reference, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence, wherein, one of them professional passage of receiving that the first professional receipts passage is a RRU; Sending out passage with first business is reference, the business of a RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, wherein, first professional one of them professional passage that passage is a RRU; Wherein, the service signal of a RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient; The first professional passage of sending out by a RRU is launched first correction signal; The first professional passage of receiving by a RRU, second correction signal of passage emission is sent out in reception by the calibration reference of the 2nd RRU, estimate the second channel response according to second correction signal that receives by the first professional receipts passage, and obtaining second penalty coefficient according to second channel response, second penalty coefficient is transmitted in second base station 920 under the 2nd RRU.

Second base station 920 is used for carrying out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of the 2nd RRU correspondence; Calibration reference by the 2nd RRU is received passage, receive first professional first correction signal of sending out the passage emission by a RRU, first correction signal that receives according to the calibration reference receipts passage by the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to first channel response; Send out second correction signal of passage emission by the calibration reference of the 2nd RRU, and receive second penalty coefficient; Receive the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and obtain the second receipts correction coefficient, wherein the service signal that receives by the 2nd RRU is proofreaied and correct based on the second receipts correction coefficient, proofreaies and correct from correction coefficient based on second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, wherein, service signal by the 2nd RRU emission is proofreaied and correct based on second correction coefficient, proofreaies and correct based on the second receipts self-correcting coefficient by the service signal reception that the 2nd RRU receives.

Referring to Figure 10, in some embodiments of the invention, communication system also comprises: the 3rd base station 930.

Wherein, first base station 910 also is used for, and launches the 3rd correction signal by the first professional passage of sending out of a RRU; The first professional passage of receiving by a RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of the 3rd RRU, estimate the 4th channel response according to the 4th correction signal that receives by the first professional receipts passage, and obtaining the 4th penalty coefficient according to the 4th channel response, the 4th penalty coefficient is transmitted in the base station under the 3rd RRU.

In some embodiments of the invention, the 3rd base station 930 can be used for, and carries out the passage self-correcting of the 3rd RRU, receives self-correcting coefficient and the 3rd from correction coefficient to obtain the 3rd of the 3rd RRU correspondence; Receiving passage with the 3rd business is reference, the business of the 3rd RRU is received passage carry out the passage relative correction to obtain the 3rd receipts correction coefficient of the 3rd RRU correspondence, wherein, one of them professional passage of receiving that the 3rd professional receipts passage is the 3rd RRU; Sending out passage with the 3rd business is reference, the business of the 3rd RRU is sent out passage carry out the passage relative correction to obtain the 3rd correction coefficient of the 3rd RRU correspondence, wherein, the 3rd professional one of them professional passage that passage is the 3rd RRU; The 3rd professional passage of receiving by the 3rd RRU, receive first base station by first professional the 3rd correction signal of sending out the passage emission of a RRU, estimate the 3rd channel response according to the 3rd correction signal that receives by the 3rd professional receipts passage, and obtain the 3rd penalty coefficient according to the 3rd channel response; By the 3rd professional the 4th correction signal of sending out the passage emission of the 3rd RRU, and receive the 4th penalty coefficient that first base station sends; Based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 3rd receipts correction coefficient of upgrading by the service signal that the 3rd RRU receives, proofread and correct based on the 3rd correction coefficient by the service signal of the 3rd RRU emission; Perhaps, based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd correction coefficient that has obtained upgraded, wherein, service signal by the 3rd RRU emission is proofreaied and correct based on the 3rd correction coefficient of upgrading, and proofreaies and correct based on the 3rd receipts correction coefficient by the service signal reception that the 3rd RRU receives.

In some embodiments of the invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient obtaining third phase to penalty coefficient, the 3rd receive correction coefficient and multiply by third phase penalty coefficient the 3rd is received correction coefficient with what obtain upgrading what obtained.

In other embodiment of the present invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient obtaining the 4th relative penalty coefficient, the 3rd receive correction coefficient divided by the three receipts correction coefficient of the 4th relative penalty coefficient to obtain upgrading with what obtained.

In some embodiments of the invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient to obtain third phase to penalty coefficient, with the 3rd correction coefficient having obtained divided by third phase to three correction coefficient of penalty coefficient to obtain upgrading

In other embodiment of the present invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient to obtain the 4th relative penalty coefficient, the 3rd correction coefficient that has obtained be multiply by three correction coefficient of the 4th relative penalty coefficient to obtain upgrading.

Referring to Figure 11 or Figure 12, in some embodiments of the invention, communication system also comprises: the 4th base station 940.

Wherein, first base station also can be used for, and launches the 5th correction signal by the 4th professional passage of sending out of a RRU; The 4th professional passage of receiving by a RRU receives the 6th correction signal of sending out the passage emission by the 5th business of the 4th RRU, estimate the 6th channel response according to the 6th correction signal that receives by the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to the 6th channel response, the 6th penalty coefficient is transmitted in the base station under the 4th RRU.Wherein, the professional service signal of receiving passage of each of the one RRU receives, proofread and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a RRU based on each professional first receipts correction coefficient of receiving the passage correspondence, the professional service signal emission of sending out passage of each of the one RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a RRU based on each professional first correction coefficient sending out the passage correspondence.

In some embodiments of the invention, the 4th base station 940 can be used for, and carries out the passage self-correcting of the 4th RRU, receives self-correcting coefficient and the 4th from correction coefficient to obtain the 4th of the 4th RRU correspondence; Receiving passage with the 5th business is reference, the business of the 4th RRU is received passage carry out the passage relative correction to obtain the 4th receipts correction coefficient of the 4th RRU correspondence, wherein, one of them professional passage of receiving that the 5th professional receipts passage is the 4th RRU; Sending out passage with the 5th business is reference, the business of the 4th RRU is sent out passage carry out the passage relative correction, and to obtain the 4th correction coefficient of the 4th RRU correspondence, wherein, the 5th professional one of them professional passage that passage is the 4th RRU; The 5th professional passage of receiving by the 4th RRU, receive first base station by the 4th professional the 5th correction signal of sending out the passage emission of a RRU, estimate the 5th channel response according to the 5th correction signal that receives by the 5th professional receipts passage, and obtain the 5th penalty coefficient according to the 5th channel response; By the 5th professional the 6th correction signal of sending out the passage emission of the 4th RRU, and receive the 6th penalty coefficient that first base station sends; Based on the 5th penalty coefficient and the 6th penalty coefficient the 4th receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 4th receipts correction coefficient of upgrading by the service signal that the 4th RRU receives, proofread and correct based on the 4th correction coefficient by the service signal of the 4th RRU emission; Perhaps, based on the 5th penalty coefficient and the 6th penalty coefficient the 4th correction coefficient that has obtained upgraded, wherein, service signal by the 4th RRU emission is proofreaied and correct based on the 4th correction coefficient of upgrading, and proofreaies and correct based on the 4th receipts correction coefficient by the service signal reception that the 4th RRU receives.

Be appreciated that by introducing the 3rd base station and the 4th base station, can be conducive to realize building of complicated cell base station system, and then be conducive to the elevator system capacity.

The working method that is appreciated that first base station 910 in the present embodiment can be similar to first base station among the said method embodiment, and the working method of second base station 920 can be similar to second base station among the said method embodiment.Wherein, first base station 910, second base station 920, the 3rd base station 930, the 4th base station 940 also may be shared a BBU, or be deployed in same position.

Referring to Figure 13, Figure 13 is that the embodiment of the invention also provides another kind of RRU the schematic flow sheet of channel combined bearing calibration, and the channel combined bearing calibration of another kind of RRU can comprise:

1301, carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence;

In some embodiments of the invention, carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence, can comprise: carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a RRU first from correction coefficient, and obtain first of professional each the subcarrier correspondence of receiving passage of each of a RRU and receive self-correcting coefficient, wherein

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, above-mentioned k1 represents the numbering of a RRU, The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, above-mentioned The business of representing a RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU send out passage i subcarrier n correspondence first from correction coefficient.

1302, receiving reference value with first is reference, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence;

In some embodiments of the invention, receiving reference value with first is reference, the business of a RRU is sent out passage carry out the passage relative correction and can comprise with first correction coefficient that obtains a RRU correspondence:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)};$

Wherein, above-mentioned

First of expression subcarrier n correspondence is received reference value, and is above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive correction coefficient.

Wherein, first of the different sub carrier correspondence receipts reference value can be identical or different.

In some embodiments of the invention, ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)={\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right);$

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, p represents the numbering in the second professional collection of letters road, and is above-mentioned The business of representing a RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, can with Receive reference value as first of subcarrier n correspondence, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive correction coefficient.

Wherein, ${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)}.$

Be appreciated that this moment

Equal 1.

1303, be reference with first reference value, the business of the one RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, wherein, the service signal of the one RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient;

In some embodiments of the invention, above-mentioned is reference with the first receipts reference value, the business of a RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, can comprise:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)};$

Wherein, above-mentioned

First reference value of expression subcarrier n correspondence, above-mentioned

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

Wherein, first of the different sub carrier correspondence reference value can be identical or different.

In some embodiments of the invention, ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)={\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right);$

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, above-mentioned p represents the second professional numbering of sending out passage, and is above-mentioned

The business of representing a RRU send out passage p subcarrier n correspondence first from correction coefficient, can with

As first reference value of subcarrier n correspondence, above-mentioned Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

Wherein, ${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)}.$

Be appreciated that under this application scenarios

Equal 1.

In other embodiment of the present invention, first receives reference value also can be other any nonzero value, for example first of subcarrier n correspondence receives reference value

First reference value also can be other any nonzero value, for example first of subcarrier n correspondence reference value ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)=e^{-j\&CenterDot;{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{DL}}\left(n\right)};$

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{DL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)\right),$

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{UL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)\right),$

Wherein, above-mentioned The business of representing a RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU send out passage i subcarrier n correspondence first from correction coefficient.

Wherein,

The phase place of representing the corresponding subcarrier n of each passage,

The phase place of representing the corresponding subcarrier n of each receipts passage, wherein,

With

Unit be radian.

Wherein, N _ANTExpression is sent out passage or is received total number of channels, above-mentioned formula be with if professional send out passage and professional send out passage since 0 serial number to N _ANT-1 is example, is not the scene of serial number, can also this analogize.

In other embodiment of the present invention, ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)=1,$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)=1.$

1304, launch first correction signal by first professional passage of a RRU, wherein, first a business passage is that one of them business of a RRU is sent out passage, and first a business passage and second a business passage can be identical or different business and send out passage.

Wherein, by a RRU first professional send out a passage launch first correction signal may be s (n) or

For example, when

Equaling 1: first correction signal is s (n), when

Being not equal to 1: first correction signal can be Wherein, when

When being not equal to 1 and first correction signal and being s (n), will Send to the base station that receives s (n), the base station that receives s (n) will receive again signal times with

1305, receive passage by first business of a RRU, second correction signal of passage emission is sent out in reception by the calibration reference of the 2nd RRU, estimate the second channel response according to second correction signal that receives by the first professional receipts passage, response obtains second penalty coefficient according to second channel, second penalty coefficient is transmitted in the base station under the 2nd RRU, wherein, first business is received one of them professional passage of receiving that passage is a RRU.

In some embodiments of the invention, suppose by a RRU first professional send out passage (the supposition first professional passage of sending out is the professional passage p2 of sending out, wherein, if the professional passage of sending out is since 0 serial number, p2=0 then, 1 ..N _ANT-1) first correction signal of respective antenna emission is Then the calibration reference by the 2nd RRU is received first correction signal that n subcarrier of the antenna (this antenna is the antenna of reusable service channel correspondence for example, or the antenna for disposing separately) of passage correspondence receives

Can be:

${\tilde{r}}_{k2,c}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;\tilde{s}\left(n\right).$

Wherein, after the calibration reference by the 2nd RRU is received passage and received first correction signal, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{k2,c}\left(n\right)=\frac{{\tilde{r}}_{k2,c}\left(n\right)}{s\left(n\right)}=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;{\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{DL}}\left(n\right).$

Wherein, γ _{K2, c}(n) calibration reference of expression the 2nd RRU is received first channel response of the subcarrier n correspondence of passage.

Wherein, obtaining first penalty coefficient according to first channel response can comprise:

${\mathrm{\&mu;}}_{k2}\left(n\right)={\mathrm{\&gamma;}}_{k2,q}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;{\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{DL}}\left(n\right).$

Optionally, a RRU first professional send out passage (the professional passage p2 of sending out is selected in supposition, if the professional passage of sending out is since 0 serial number, p2=0 then, 1 ..N _ANT-1) first correction signal of respective antenna emission is s (n), then the calibration reference by the 2nd RRU is received first correction signal that n subcarrier of the antenna (this antenna is the antenna of reusable service channel correspondence for example, or the antenna for disposing separately) of passage correspondence receives Can be:

${\tilde{r}}_{k2,c}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;s\left(n\right).$

Wherein, after the calibration reference by the 2nd RRU is received passage and received first correction signal, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{k2,c}\left(n\right)=\frac{{\tilde{r}}_{k2,c}\left(n\right)}{s\left(n\right)}=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right).$

Wherein, γ _{K2, c}(n) calibration reference of expression the 2nd RRU is received first channel response of the subcarrier n correspondence of passage.

And, the base station handle under the RRU

Send to the affiliated base station of the 2nd RRU.

Wherein, obtaining first penalty coefficient according to first channel response can comprise:

${\mathrm{\&mu;}}_{k2}\left(n\right)={\mathrm{\&gamma;}}_{k2,q}\left(n\right)\&CenterDot;{\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;{\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{DL}}\left(n\right).$

Wherein, μ _K2(n) first penalty coefficient of the corresponding subcarrier n of expression.

Similar with the above-mentioned process of giving an example, in some embodiments of the invention, second correction signal of supposing to send out by the calibration reference of the 2nd RRU passage emission is s (n), then (suppose and select the professional passage p2 that receives by the first professional passage of receiving of a RRU, wherein, if business is received passage since 0 serial number, then p2=0,1 ..N _ANT-1) second correction signal that receives of the subcarrier n of respective antenna

Can be:

${\tilde{r}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}\left(n\right)={\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{UL}}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right)\&CenterDot;s\left(n\right).$

Wherein, by a RRU first professional receive passage p2 and receive second correction signal after, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}\left(n\right)=\frac{{\tilde{r}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}\left(n\right)}{s\left(n\right)}={\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{UL}}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, γ _{K1, p}(n) first of expression the one RRU professional second channel response of receiving the subcarrier n correspondence of passage p2.

Wherein, obtaining second penalty coefficient according to second channel response can comprise:

${\mathrm{\&mu;}}_{k1}\left(n\right)={\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}\left(n\right)={\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{UL}}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, μ _K1(n) second penalty coefficient of the corresponding subcarrier n of expression.The above-mentioned base station of the one RRU handle

μ _K1(n) send to the affiliated base station of the 2nd RRU.

In some embodiments of the invention, the base station can be received the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and be obtained the second receipts correction coefficient under the 2nd RRU, wherein, proofread and correct based on the second receipts correction coefficient by the service signal that the 2nd RRU receives, proofread and correct from correction coefficient based on second by the service signal of the 2nd RRU emission; Perhaps, second base station obtains second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, wherein, service signal by the 2nd RRU emission is proofreaied and correct based on second correction coefficient, proofreaies and correct based on the second receipts self-correcting coefficient by the service signal reception that the 2nd RRU receives.

In some embodiments of the invention, the base station is received the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and is obtained the second receipts correction coefficient under the 2nd RRU, can comprise: with second penalty coefficient divided by first penalty coefficient obtaining the first relative penalty coefficient, receive the self-correcting coefficient with second and multiply by the first relative penalty coefficient to obtain the second receipts correction coefficient.

In other embodiment of the present invention, the base station is received the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and is obtained the second receipts correction coefficient under the 2nd RRU, can comprise: with first penalty coefficient divided by second penalty coefficient obtaining the second relative penalty coefficient, with second receive the self-correcting coefficient divided by the second relative penalty coefficient to obtain the second receipts correction coefficient.

In some embodiments of the invention, the base station obtains second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient under the 2nd RRU, can comprise: with second penalty coefficient divided by first penalty coefficient to obtain the first relative penalty coefficient, with second from correction coefficient divided by the first relative penalty coefficient to obtain second correction coefficient

In other embodiment of the present invention, the base station obtains second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient under the 2nd RRU, can comprise: with first penalty coefficient divided by second penalty coefficient to obtain the second relative penalty coefficient, multiply by the second relative penalty coefficient to obtain second correction coefficient with second from correction coefficient.

In some embodiments of the invention, carry out the joint channel correction if also introduce the 3rd RRU, then said method also can comprise: the first professional passage of sending out by a RRU is launched the 3rd correction signal;

The first professional passage of receiving by a RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of the 3rd RRU, estimate the 4th channel response according to the 4th correction signal that receives by the first professional receipts passage, and obtaining the 4th penalty coefficient according to the 4th channel response, the 4th penalty coefficient is transmitted in the base station under the 3rd RRU.

In some embodiments of the invention, behavior self-correcting and the relative correction mode of base station can be similar with the behavior of base station under the RRU under the 3rd RRU, and compensation behavior can be similar with the behavior of base station under the 2nd RRU between RRU.

The base station concrete operations can be as follows under the 3rd RRU:

Carry out the passage self-correcting of the 3rd RRU, receive self-correcting coefficient and the 3rd from correction coefficient to obtain the 3rd of the 3rd RRU correspondence; Receiving passage with the 3rd business is reference, the business of the 3rd RRU is received passage carry out the passage relative correction to obtain the 3rd receipts correction coefficient of the 3rd RRU correspondence, wherein, one of them professional passage of receiving that the 3rd professional receipts passage is the 3rd RRU; Sending out passage with the 3rd business is reference, the business of the 3rd RRU is sent out passage carry out the passage relative correction to obtain the 3rd correction coefficient of the 3rd RRU correspondence, wherein, the 3rd professional one of them professional passage that passage is the 3rd RRU; The 3rd professional passage of receiving by the 3rd RRU, receive first base station by first professional the 3rd correction signal of sending out the passage emission of a RRU, estimate the 3rd channel response according to the 3rd correction signal that receives by the 3rd professional receipts passage, and obtain the 3rd penalty coefficient according to the 3rd channel response; By the 3rd professional the 4th correction signal of sending out the passage emission of the 3rd RRU, and receive the 4th penalty coefficient that first base station sends; Based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 3rd receipts correction coefficient of upgrading by the service signal that the 3rd RRU receives, proofread and correct based on the 3rd correction coefficient by the service signal of the 3rd RRU emission; Perhaps, based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd correction coefficient that has obtained upgraded, wherein, service signal by the 3rd RRU emission is proofreaied and correct based on the 3rd correction coefficient of upgrading, and proofreaies and correct based on the 3rd receipts correction coefficient by the service signal reception that the 3rd RRU receives.

In some embodiments of the invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient obtaining third phase to penalty coefficient, the 3rd receive correction coefficient and multiply by third phase penalty coefficient the 3rd is received correction coefficient with what obtain upgrading what obtained.

In other embodiment of the present invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient obtaining the 4th relative penalty coefficient, the 3rd receive correction coefficient divided by the three receipts correction coefficient of the 4th relative penalty coefficient to obtain upgrading with what obtained.

In some embodiments of the invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient to obtain third phase to penalty coefficient, with the 3rd correction coefficient having obtained divided by third phase to three correction coefficient of penalty coefficient to obtain upgrading

In other embodiment of the present invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient to obtain the 4th relative penalty coefficient, the 3rd correction coefficient that has obtained be multiply by three correction coefficient of the 4th relative penalty coefficient to obtain upgrading.

In some embodiments of the invention, carry out the joint channel correction if also introduce the 4th RRU, then said method also can comprise:

The 4th professional passage of sending out by a RRU is launched the 5th correction signal;

The 4th professional passage of receiving by a RRU receives the 6th correction signal of sending out the passage emission by the 5th business of the 4th RRU, estimate the 6th channel response according to the 6th correction signal that receives by the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to the 6th channel response, the 6th penalty coefficient is transmitted in the base station under the 4th RRU.

Wherein, the reception of the service signal of a RRU is proofreaied and correct based on the first receipts correction coefficient and is comprised:

The professional service signal of receiving passage of each of the one RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a RRU.

Wherein, the emission of the service signal of a RRU is proofreaied and correct based on first correction coefficient and is comprised:

The professional service signal emission of sending out passage of each of the one RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a RRU based on each professional first correction coefficient sending out the passage correspondence.

In some embodiments of the invention, the behavior of the affiliated base station of the behavior of base station and the 3rd RRU is similar under the 4th RRU.The base station concrete operations can be as follows under the 4th RRU:

Carry out the passage self-correcting of the 4th RRU, receive self-correcting coefficient and the 4th from correction coefficient to obtain the 4th of the 4th RRU correspondence; Receiving passage with the 5th business is reference, the business of the 4th RRU is received passage carry out the passage relative correction to obtain the 4th receipts correction coefficient of the 4th RRU correspondence, wherein, one of them professional passage of receiving that the 5th professional receipts passage is the 4th RRU; Sending out passage with the 5th business is reference, the business of the 4th RRU is sent out passage carry out the passage relative correction, and to obtain the 4th correction coefficient of the 4th RRU correspondence, wherein, the 5th professional one of them professional passage that passage is the 4th RRU; The 5th professional passage of receiving by RRU, receive first base station by the 4th professional the 5th correction signal of sending out the passage emission of a RRU, estimate the 5th channel response according to the 5th correction signal that receives by the 5th professional receipts passage, and obtain the 5th penalty coefficient according to the 5th channel response; By the 5th professional the 6th correction signal of sending out the passage emission of RRU, and receive the 6th penalty coefficient that first base station sends; Based on the 5th penalty coefficient and the 6th penalty coefficient the 4th receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 4th receipts correction coefficient of upgrading by the service signal that the 4th RRU receives, proofread and correct based on the 4th correction coefficient by the service signal of the 4th RRU emission; Perhaps, based on the 5th penalty coefficient and the 6th penalty coefficient the 4th correction coefficient that has obtained upgraded, wherein, service signal by the 4th RRU emission is proofreaied and correct based on the 4th correction coefficient of upgrading, and proofreaies and correct based on the 4th receipts correction coefficient by the service signal reception that the 4th RRU receives.

Be appreciated that by introducing the 3rd RRU and the 4th RRU, can be conducive to realize building of complicated cell base station system, and then be conducive to the elevator system capacity.

Be appreciated that, the step executive agent of present embodiment such scheme can be the BBU of a RRU, a RRU correspondence, or other device (as main control unit) in the affiliated base station of a RRU, certainly, for the step that each device in the base station under the RRU (can claim first base station) is carried out, all can be described as the step that carry out the affiliated base station of a RRU.Be appreciated that the 2nd RRU and a RRU may share a BBU, or do not share a BBU.Certainly, the 3rd RRU and the 4th RRU also can share BBU, even a RRU, the 2nd RRU, the 3rd RRU and the 4th RRU also can share BBU, can be deployed in same position or diverse location.The one RRU, the 2nd RRU, the 3rd RRU and the 4th RRU be the RRU of corresponding identical or different residential quarter also.

Therefore, pass through the service channel of a RRU and the mutual correction signal of calibration reference passage of the 2nd RRU in the present embodiment respectively, obtain be used to the penalty coefficient that carries out channel compensation between RRU according to mutual correction signal, self-tuning RRU carries out the service signal compensation in conjunction with penalty coefficient, is conducive to satisfy the requirement of the spliced up-downgoing reciprocity of a plurality of RRU.This mechanism can realize a plurality of RRU are spliced to obtain more service channel RRU, so, is conducive to satisfy higher communication requirement, can take into account cost and System Expansion demand.For example existing two 2T2R being spliced into 1 4T4R, is to the existing investment reasonable use like this.

Referring to Figure 14, the embodiment of the invention provides a kind of RRU channel correcting device 1400, can comprise:

Self-correcting unit 1410, the first relative correction unit 1420, the second relative correction unit 1430, first transmitter unit 1440, receiving element 1450, estimation unit 1460 and second transmitter unit 1470.

Wherein, the passage self-correcting of a RRU is carried out in self-correcting unit 1410, receives self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence;

The first relative correction unit 1420, being used for receiving reference value with first is reference, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence;

The second relative correction unit 1430, being used for first reference value is reference, the business of the one RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, the service signal of the one RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient;

First transmitter unit 1440 is used for launching first correction signal by the first professional passage of sending out of a RRU, first professional one of them professional passage of sending out that passage is a RRU;

Receiving element 1450 is used for receiving passage by first business of a RRU, receives second correction signal of sending out the passage emission by the calibration reference of the 2nd RRU, wherein, and one of them professional passage of receiving that the first professional receipts passage is a RRU;

Estimation unit 1460 is used for estimating the second channel response according to second correction signal that receives by the first professional receipts passage, and response obtains second penalty coefficient according to second channel;

Second transmitter unit 1470, second penalty coefficient is transmitted in the base station under the 2nd RRU.

In some embodiments of the invention, self-correcting unit 1410 can specifically be used for, carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a RRU first from correction coefficient, and each business that obtains a RRU is received first receipts self-correcting coefficient of each subcarrier correspondence of passage, wherein

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, above-mentioned k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU, The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU send out passage i subcarrier n correspondence first from correction coefficient.

In some embodiments of the invention, the first relative correction unit 1420 can specifically be used in the following way, receiving reference value with first is reference, the business of a RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)};$

Wherein, above-mentioned First of expression subcarrier n correspondence is received reference value, and is above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive correction coefficient.

In some embodiments of the invention, first professional first correction signal of sending out the subcarrier n emission of passage by a RRU is

Wherein, S (n) is reference signal or training signal, and p2 is the first professional numbering of sending out passage,

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage p2.

In some embodiments of the invention, the second relative correction unit 1430 can specifically be used in the following way, be reference with first reference value, the business of a RRU sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)};$

Wherein, above-mentioned First reference value of expression subcarrier n correspondence, above-mentioned

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

In some embodiments of the invention, first of subcarrier n correspondence receive reference value ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)=e^{-j\&CenterDot;{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{UL}}\left(n\right)};$

First reference value of subcarrier n correspondence ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)=e^{-j\&CenterDot;{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{DL}}\left(n\right)};$

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{DL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)\right),$

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{UL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)\right),$

Wherein, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU send out passage i subcarrier n correspondence first from correction coefficient, above-mentioned N _ANTBusiness receipts passage or the professional sum of sending out passage of representing a RRU,

Expression

Corresponding is the phase place of unit with the radian,

Expression

Be the phase place of unit with the radian.

In some embodiments of the invention, first of subcarrier n correspondence receive reference value ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)={\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right),$ Wherein, above-mentioned The business of representing a RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, it is above-mentioned that professional to receive passage p identical or different with the first professional receipts passage.First reference value of subcarrier n correspondence ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)={\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right),$ Wherein, above-mentioned

The business of representing a RRU send out passage p subcarrier n correspondence first from correction coefficient, above-mentioned business sends out passage p and first professional to send out passage identical or different.

In some embodiments of the invention, first transmitter unit 1440 also can be used for, and launches the 3rd correction signal by the first professional passage of sending out of a RRU;

Receiving element 1450 also is used for, and sends out the 4th correction signal that passage is launched by the first professional receipts passage reception of a RRU by the 3rd business of the 3rd RRU;

Estimation unit 1460 also can be used for, and according to professional receive the 4th correction signal that passage receives and estimate the 4th channel response by first, and obtains the 4th penalty coefficient according to the 4th channel response, and the 4th penalty coefficient is transmitted in the base station under the 3rd RRU.

In some embodiments of the invention, first transmitter unit 1440 also can be used for, and launches the 5th correction signal by the 4th professional passage of sending out of a RRU;

Receiving element 1450 also is used for, and sends out the 6th correction signal that passage is launched by the 4th professional receipts passage reception of a RRU by the 5th business of the 4th RRU,

Estimation unit 1460 also can be used for, and estimates the 6th channel response according to the 6th correction signal that receives by the 4th professional receipts passage; And obtain the 6th penalty coefficient according to the 6th channel response;

Second transmitter unit 1470, the 6th penalty coefficient is transmitted in the base station under the 4th RRU;

Wherein, the service signal reception of the one RRU is proofreaied and correct based on the first receipts correction coefficient and comprised: the professional service signal of receiving passage of each of a RRU receives, and receives the 4th professional ratio of receiving the first corresponding receipts correction coefficient of passage of correction coefficient and a RRU based on first of each business receipts passage correspondence and proofreaies and correct;

The service signal emission of the one RRU is proofreaied and correct based on first correction coefficient and is comprised: the professional service signal emission of sending out passage of each of a RRU, proofread and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a RRU based on each professional first correction coefficient sending out the passage correspondence.

Be understandable that the function of each functional module of the RRU channel correcting device 1400 of present embodiment can be according to the method specific implementation among the said method embodiment, its specific implementation process can repeat no more with reference to the associated description of said method embodiment herein.Wherein, RRU channel correcting device 1400 for example can be other device in the base station under BBU, controller or a RRU itself or the RRU.

Referring to Figure 15, the embodiment of the invention provides a kind of base station 1500, can comprise:

As shown in figure 15, the base station 1500 of present embodiment comprises at least one bus 1501, at least one processor 1502 that links to each other with bus 1501 and at least one memory 1503 that links to each other with bus 1501.

Wherein, processor 1502 is by bus 1501, and the code that calls storage in the memory 1503 to be being used for,

Carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence; Receiving reference value with first is reference, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence; Be reference with first reference value, the business of the one RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, wherein, the service signal of the one RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient; The first professional passage of sending out by a RRU is launched first correction signal; The first professional passage of receiving by a RRU, second correction signal of passage emission is sent out in reception by the calibration reference of the 2nd RRU, estimate the second channel response according to second correction signal that receives by the first professional receipts passage, response obtains second penalty coefficient according to second channel, second penalty coefficient is transmitted in the base station under the 2nd RRU, wherein, first business is received one of them professional passage of receiving that passage is a RRU; First professional one of them professional passage of sending out that passage is a RRU.

In some embodiments of the invention, processor 1502 is carried out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence, can comprise: carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a RRU first from correction coefficient, and obtain first of professional each the subcarrier correspondence of receiving passage of each of a RRU and receive self-correcting coefficient, wherein

${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^1\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,i}\left(n\right)};$

Wherein, above-mentioned k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU send out passage i subcarrier n correspondence first from correction coefficient.

In some embodiments of the invention, it is reference that processor 1502 is received reference value with first, the business of a RRU is sent out passage carry out the passage relative correction and can comprise with first correction coefficient that obtains a RRU correspondence:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)};$

Wherein, above-mentioned

First of expression subcarrier n correspondence is received reference value, and is above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive correction coefficient.

Wherein, first of the different sub carrier correspondence receipts reference value can be identical or different.

In some embodiments of the invention, first professional first correction signal of sending out the subcarrier n emission of passage by a RRU is

Wherein, S (n) is reference signal or training signal, and p2 is the first professional numbering of sending out passage,

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage p2.

In some embodiments of the invention, ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)={\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right);$

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, p represents the numbering in the second professional collection of letters road, and is above-mentioned

The business of representing a RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, can with Receive reference value as first of subcarrier n correspondence, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive correction coefficient.

Wherein, ${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right)}.$

Be appreciated that this moment

Equal 1.

In some embodiments of the invention, it is reference that processor 1502 is received reference value with first, the business of a RRU is sent out passage carry out the passage relative correction and can comprise with first correction coefficient that obtains a RRU correspondence:

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)};$

Wherein, above-mentioned

First reference value of expression subcarrier n correspondence, above-mentioned

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

Wherein, first of the different sub carrier correspondence reference value can be identical or different.

In some embodiments of the invention, ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)={\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right);$

${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, above-mentioned p represents the second professional numbering of sending out passage, and is above-mentioned The business of representing a RRU send out passage p subcarrier n correspondence first from correction coefficient, can with

As first reference value of subcarrier n correspondence, above-mentioned

Represent that the business of a RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

Wherein, ${\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right)}.$

Be appreciated that under this application scenarios

Equal 1.

In other embodiment of the present invention, first receives reference value also can be other any nonzero value, for example first of subcarrier n correspondence receives reference value

First reference value also can be other any nonzero value, for example first of subcarrier n correspondence reference value ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)=e^{-j\&CenterDot;{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{DL}}\left(n\right)};$

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{DL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}\left(n\right)\right),$

Wherein, ${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1}^{\mathrm{UL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right),$

${\mathrm{\&theta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{UL}}\left(n\right)\right),$

Wherein, above-mentioned

The business of representing a RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, above-mentioned

The business of representing a RRU send out passage i subcarrier n correspondence first from correction coefficient.

Wherein,

The phase place of representing the corresponding subcarrier n of each passage,

The phase place of representing the corresponding subcarrier n of each receipts passage, wherein,

With

Unit be radian.

Wherein, N _ANTExpression is sent out passage or is received total number of channels, above-mentioned formula be with if professional send out passage and professional send out passage since 0 serial number to N _ANT-1 is example, is not the scene of serial number, can also this analogize.

In some embodiments of the invention, first of subcarrier n correspondence receive reference value ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)={\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{UL}}\left(n\right),$ Wherein, above-mentioned

The business of representing a RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, it is above-mentioned that professional to receive passage p identical or different with the first professional receipts passage.First reference value of subcarrier n correspondence ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)={\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p}^{\mathrm{DL}}\left(n\right),$ Wherein, above-mentioned

The business of representing a RRU send out passage p subcarrier n correspondence first from correction coefficient, above-mentioned business sends out passage p and first professional to send out passage identical or different.

In other embodiment of the present invention, ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)=1,$ ${\mathrm{\&beta;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)=1.$

In some embodiments of the invention, processor 1502 hypothesis by a RRU first professional send out passage (the supposition first professional passage of sending out be the professional passage p2 of sending out, wherein, if a professional passage is since 0 serial number, p2=0 then, 1 ..N _ANT-1) first correction signal of respective antenna emission is Then the calibration reference by the 2nd RRU is received first correction signal that n subcarrier of the antenna (this antenna is the antenna of reusable service channel correspondence for example, or the antenna for disposing separately) of passage correspondence receives

Can be:

${\tilde{r}}_{k2,c}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;\tilde{s}\left(n\right).$

Wherein, after the calibration reference by the 2nd RRU is received passage and received first correction signal, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{k2,c}\left(n\right)=\frac{{\tilde{r}}_{k2,c}\left(n\right)}{s\left(n\right)}=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;{\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{DL}}\left(n\right).$

Wherein, γ _{K2, c}(n) calibration reference of expression the 2nd RRU is received first channel response of the subcarrier n correspondence of passage.

Wherein, obtaining first penalty coefficient according to first channel response can comprise:

${\mathrm{\&mu;}}_{k2}\left(n\right)={\mathrm{\&gamma;}}_{k2,q}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;{\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{DL}}\left(n\right).$

Optionally, processor 1502 by a RRU first professional send out passage (the professional passage p2 of sending out is selected in supposition, if the professional passage of sending out is since 0 serial number, p2=0 then, 1 ..N _ANT-1) first correction signal of respective antenna emission is s (n), then the calibration reference by the 2nd RRU is received first correction signal that n subcarrier of the antenna (this antenna is the antenna of reusable service channel correspondence for example, or the antenna for disposing separately) of passage correspondence receives

Can be:

${\tilde{r}}_{k2,c}\left(n\right)=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;s\left(n\right).$

Wherein, after the calibration reference by the 2nd RRU is received passage and received first correction signal, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{k2,c}\left(n\right)=\frac{{\tilde{r}}_{k2,c}\left(n\right)}{s\left(n\right)}=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right).$

Wherein, γ _{K2, c}(n) calibration reference of expression the 2nd RRU is received first channel response of the subcarrier n correspondence of passage.

And, the base station handle under the RRU

Send to the affiliated base station of the 2nd RRU.

Wherein, obtaining first penalty coefficient according to first channel response can comprise:

${\mathrm{\&mu;}}_{k2}\left(n\right)={\mathrm{\&gamma;}}_{k2,q}\left(n\right)\&CenterDot;{\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,i}^{\mathrm{DL}}=h_{k2}^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{comm},k2,k1}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p}\left(n\right)\&CenterDot;{\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{DL}}\left(n\right).$

Wherein, μ _K2(n) first penalty coefficient of the corresponding subcarrier n of expression.

Similar with the above-mentioned process of giving an example, in some embodiments of the invention, second correction signal of supposing to send out by the calibration reference of the 2nd RRU passage emission is s (n), then (suppose and select the professional passage p2 that receives by the first professional passage of receiving of a RRU, wherein, if business is received passage since 0 serial number, then p2=0,1 ..N _ANT-1) second correction signal that receives of the subcarrier n of respective antenna

Can be:

${\tilde{r}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}\left(n\right)={\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{UL}}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right)\&CenterDot;s\left(n\right).$

Wherein, by a RRU first professional receive passage p2 and receive second correction signal after, can carry out channel estimating as follows:

${\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}\left(n\right)=\frac{{\tilde{r}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}\left(n\right)}{s\left(n\right)}={\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{UL}}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, γ _{K1, p}(n) first of expression the one RRU professional second channel response of receiving the subcarrier n correspondence of passage p2.

Wherein, obtaining second penalty coefficient according to second channel response can comprise:

${\mathrm{\&mu;}}_{k1}\left(n\right)={\mathrm{\&gamma;}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}\left(n\right)={\widetilde{\mathrm{\&beta;}}}_{\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,p2}^{\mathrm{UL}}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h\; k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">h</figure-callout>}}_k^{1,p2}\left(n\right)\&CenterDot;h_{\mathrm{comm},\mathrm{<figure-callout\; id="1"\; label="k"\; filenames="HDA00002785324400021.png,HDA00002785324400022.png"\; state="\{\{state\}\}">k</figure-callout>}1,k2}\left(n\right)\&CenterDot;h_{k2}^{\mathrm{ct}}\left(n\right).$

Wherein, μ _K1(n) second penalty coefficient of the corresponding subcarrier n of expression.The base station system of the one RRU is μ _K1(n) send to the base station system of the 2nd RRU.

In some embodiments of the invention, carry out the joint channel correction if also introduce the 3rd RRU, processor 1502 also is used for launching the 3rd correction signal by the first professional passage of sending out of a RRU;

The first professional passage of receiving by a RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of the 3rd RRU, estimate the 4th channel response according to the 4th correction signal that receives by the first professional receipts passage, and obtaining the 4th penalty coefficient according to the 4th channel response, the 4th penalty coefficient is transmitted in the base station under the 3rd RRU.

In some embodiments of the invention, behavior self-correcting and the relative correction mode of base station can be similar with the behavior of base station under the RRU under the 3rd RRU, and compensation behavior can be similar with the behavior of base station under the 2nd RRU between RRU.

The base station concrete operations can be as follows under the 3rd RRU:

Carry out the passage self-correcting of the 3rd RRU, receive self-correcting coefficient and the 3rd from correction coefficient to obtain the 3rd of the 3rd RRU correspondence; Receiving passage with the 3rd business is reference, the business of the 3rd RRU is received passage carry out the passage relative correction to obtain the 3rd receipts correction coefficient of the 3rd RRU correspondence, wherein, one of them professional passage of receiving that the 3rd professional receipts passage is the 3rd RRU; Sending out passage with the 3rd business is reference, the business of the 3rd RRU is sent out passage carry out the passage relative correction to obtain the 3rd correction coefficient of the 3rd RRU correspondence, wherein, the 3rd professional one of them professional passage that passage is the 3rd RRU; The 3rd professional passage of receiving by the 3rd RRU, receive first base station by first professional the 3rd correction signal of sending out the passage emission of a RRU, estimate the 3rd channel response according to the 3rd correction signal that receives by the 3rd professional receipts passage, and obtain the 3rd penalty coefficient according to the 3rd channel response; By the 3rd professional the 4th correction signal of sending out the passage emission of the 3rd RRU, and receive the 4th penalty coefficient that first base station sends; Based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 3rd receipts correction coefficient of upgrading by the service signal that the 3rd RRU receives, proofread and correct based on the 3rd correction coefficient by the service signal of the 3rd RRU emission; Perhaps, based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd correction coefficient that has obtained upgraded, wherein, service signal by the 3rd RRU emission is proofreaied and correct based on the 3rd correction coefficient of upgrading, and proofreaies and correct based on the 3rd receipts correction coefficient by the service signal reception that the 3rd RRU receives.

In some embodiments of the invention, processor 1502 is based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient obtaining third phase to penalty coefficient, the 3rd receive correction coefficient and multiply by third phase penalty coefficient the 3rd is received correction coefficient with what obtain upgrading what obtained.

In other embodiment of the present invention, processor 1502 is based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient obtaining the 4th relative penalty coefficient, the 3rd receive correction coefficient divided by the three receipts correction coefficient of the 4th relative penalty coefficient to obtain upgrading with what obtained.

In some embodiments of the invention, processor 1502 is based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient to obtain third phase to penalty coefficient, with the 3rd correction coefficient having obtained divided by third phase to three correction coefficient of penalty coefficient to obtain upgrading

In other embodiment of the present invention, processor 1502 is based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient to obtain the 4th relative penalty coefficient, the 3rd correction coefficient that has obtained be multiply by three correction coefficient of the 4th relative penalty coefficient to obtain upgrading.

In some embodiments of the invention, carry out the joint channel correction if also introduce RRU, processor 1502 also can be launched the 5th correction signal by the 4th professional passage of sending out of a RRU;

The 4th professional passage of receiving by a RRU receives the 6th correction signal of sending out the passage emission by the 5th business of the 4th RRU, estimate the 6th channel response according to the 6th correction signal that receives by the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to the 6th channel response, the 6th penalty coefficient is transmitted in the base station under the 4th RRU.

Wherein, the reception of the service signal of a RRU is proofreaied and correct based on the first receipts correction coefficient and is comprised:

The professional service signal of receiving passage of each of the one RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a RRU.

Wherein, the emission of the service signal of a RRU is proofreaied and correct based on first correction coefficient and is comprised:

The professional service signal emission of sending out passage of each of the one RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a RRU based on each professional first correction coefficient sending out the passage correspondence.

In some embodiments of the invention, the behavior of the affiliated base station of the behavior of base station and the 3rd RRU is similar under the 4th RRU.The base station concrete operations can be as follows under the 4th RRU:

Carry out the passage self-correcting of the 4th RRU, receive self-correcting coefficient and the 4th from correction coefficient to obtain the 4th of RRU correspondence; Receiving passage with the 5th business is reference, the business of the 4th RRU is received passage carry out the passage relative correction to obtain the 4th receipts correction coefficient of the 4th RRU correspondence, wherein, one of them professional passage of receiving that the 5th professional receipts passage is the 4th RRU; Sending out passage with the 5th business is reference, the business of the 4th RRU is sent out passage carry out the passage relative correction, and to obtain the 4th correction coefficient of the 4th RRU correspondence, wherein, the 5th professional one of them professional passage that passage is the 4th RRU; The 5th professional passage of receiving by the 4th RRU, receive first base station by the 4th professional the 5th correction signal of sending out the passage emission of a RRU, estimate the 5th channel response according to the 5th correction signal that receives by the 5th professional receipts passage, and obtain the 5th penalty coefficient according to the 5th channel response; By the 5th professional the 6th correction signal of sending out the passage emission of RRU, and receive the 6th penalty coefficient that first base station sends; Based on the 5th penalty coefficient and the 6th penalty coefficient the 4th receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 4th receipts correction coefficient of upgrading by the service signal that the 4th RRU receives, proofread and correct based on the 4th correction coefficient by the service signal of the 4th RRU emission; Perhaps, based on the 5th penalty coefficient and the 6th penalty coefficient the 4th correction coefficient that has obtained upgraded, wherein, service signal by the 4th RRU emission is proofreaied and correct based on the 4th correction coefficient of upgrading, and proofreaies and correct based on the 4th receipts correction coefficient by the service signal reception that the 4th RRU receives.

Be appreciated that by introducing the 3rd RRU and the 4th RRU, can be conducive to realize building of complicated cell base station system, and then be conducive to the elevator system capacity.

Also provide a kind of communication system referring to Figure 16, the embodiment of the invention, comprising:

First base station 1610 and second base station 1620.

Wherein, first base station 1610 is used for carrying out the passage self-correcting of a RRU, receives self-correcting coefficient and first from correction coefficient to obtain first of a RRU correspondence; Receiving reference value with first is reference, the business of a RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a RRU correspondence; Be reference with first reference value, the business of the one RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a RRU correspondence, wherein, the service signal of the one RRU receives based on the first receipts correction coefficient and proofreaies and correct, and the service signal emission of a RRU is proofreaied and correct based on first correction coefficient; The first professional passage of sending out by a RRU is launched first correction signal; The first professional passage of receiving by a RRU, second correction signal of passage emission is sent out in reception by the calibration reference of the 2nd RRU, estimate the second channel response according to second correction signal that receives by the first professional receipts passage, response obtains second penalty coefficient according to second channel, second penalty coefficient is transmitted in second base station 1520 under the 2nd RRU, wherein, first business is received one of them professional passage of receiving that passage is a RRU; First professional one of them professional passage of sending out that passage is a RRU;

Second base station 1620 is used for carrying out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of the 2nd RRU correspondence; Calibration reference by the 2nd RRU is received passage, receive first base station by first professional first correction signal of sending out the passage emission of a RRU, first correction signal that receives according to the calibration reference receipts passage by the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to first channel response; Send out second correction signal of passage emission by the calibration reference of the 2nd RRU, and receive second penalty coefficient that first base station sends; Receive the self-correcting coefficient based on first penalty coefficient, second penalty coefficient and second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the second receipts correction coefficient by the service signal that the 2nd RRU receives, proofread and correct from correction coefficient based on second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on first penalty coefficient, second penalty coefficient and second from correction coefficient, wherein, service signal by the 2nd RRU emission is proofreaied and correct based on second correction coefficient, proofreaies and correct based on the second receipts self-correcting coefficient by the service signal reception that the 2nd RRU receives.

Referring to Figure 17, in some embodiments of the invention, communication system also comprises: the 3rd base station 1630.

Wherein, first base station 1610 also is used for, and launches the 3rd correction signal by the first professional passage of sending out of a RRU; The first professional passage of receiving by a RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of the 3rd RRU, estimate the 4th channel response according to the 4th correction signal that receives by the first professional receipts passage, and obtaining the 4th penalty coefficient according to the 4th channel response, the 4th penalty coefficient is transmitted in the base station under the 3rd RRU.

In some embodiments of the invention, the 3rd base station 1630 can be used for, and carries out the passage self-correcting of the 3rd RRU, receives self-correcting coefficient and the 3rd from correction coefficient to obtain the 3rd of the 3rd RRU correspondence; Receiving passage with the 3rd business is reference, the business of the 3rd RRU is received passage carry out the passage relative correction to obtain the 3rd receipts correction coefficient of the 3rd RRU correspondence, wherein, one of them professional passage of receiving that the 3rd professional receipts passage is the 3rd RRU; Sending out passage with the 3rd business is reference, the business of the 3rd RRU is sent out passage carry out the passage relative correction to obtain the 3rd correction coefficient of the 3rd RRU correspondence, wherein, the 3rd professional one of them professional passage that passage is the 3rd RRU; The 3rd professional passage of receiving by the 3rd RRU, receive first base station by first professional the 3rd correction signal of sending out the passage emission of a RRU, estimate the 3rd channel response according to the 3rd correction signal that receives by the 3rd professional receipts passage, and obtain the 3rd penalty coefficient according to the 3rd channel response; By the 3rd professional the 4th correction signal of sending out the passage emission of the 3rd RRU, and receive the 4th penalty coefficient that first base station sends; Based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 3rd receipts correction coefficient of upgrading by the service signal that the 3rd RRU receives, proofread and correct based on the 3rd correction coefficient by the service signal of the 3rd RRU emission; Perhaps, based on the 3rd penalty coefficient and the 4th penalty coefficient the 3rd correction coefficient that has obtained upgraded, wherein, service signal by the 3rd RRU emission is proofreaied and correct based on the 3rd correction coefficient of upgrading, and proofreaies and correct based on the 3rd receipts correction coefficient by the service signal reception that the 3rd RRU receives.

In some embodiments of the invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient obtaining third phase to penalty coefficient, the 3rd receive correction coefficient and multiply by third phase penalty coefficient the 3rd is received correction coefficient with what obtain upgrading what obtained.

In other embodiment of the present invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd receipts correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient obtaining the 4th relative penalty coefficient, the 3rd receive correction coefficient divided by the three receipts correction coefficient of the 4th relative penalty coefficient to obtain upgrading with what obtained.

In some embodiments of the invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 4th penalty coefficient divided by the 3rd penalty coefficient to obtain third phase to penalty coefficient, with the 3rd correction coefficient having obtained divided by third phase to three correction coefficient of penalty coefficient to obtain upgrading

In other embodiment of the present invention, based on the 3rd penalty coefficient and the 4th penalty coefficient, upgrade the 3rd correction coefficient that has obtained, can comprise: with the 3rd penalty coefficient divided by the 4th penalty coefficient to obtain the 4th relative penalty coefficient, the 3rd correction coefficient that has obtained be multiply by three correction coefficient of the 4th relative penalty coefficient to obtain upgrading.

Referring to Figure 18 or Figure 19, in some embodiments of the invention, communication system also comprises: the 4th base station 1640.

Wherein, first base station 1610 also can be used for, and launches the 5th correction signal by the 4th professional passage of sending out of a RRU; The 4th professional passage of receiving by a RRU receives the 6th correction signal of sending out the passage emission by the 5th business of the 4th RRU, estimate the 6th channel response according to the 6th correction signal that receives by the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to the 6th channel response, the 6th penalty coefficient is transmitted in the base station under the 4th RRU.Wherein, the professional service signal of receiving passage of each of the one RRU receives, proofread and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a RRU based on each professional first receipts correction coefficient of receiving the passage correspondence, the professional service signal emission of sending out passage of each of the one RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a RRU based on each professional first correction coefficient sending out the passage correspondence.

In some embodiments of the invention, the 4th base station 1640 can be used for, and carries out the passage self-correcting of the 4th RRU, receives self-correcting coefficient and the 4th from correction coefficient to obtain the 4th of the 4th RRU correspondence; Receiving passage with the 5th business is reference, the business of the 4th RRU is received passage carry out the passage relative correction to obtain the 4th receipts correction coefficient of the 4th RRU correspondence, wherein, one of them professional passage of receiving that the 5th professional receipts passage is RRU; Sending out passage with the 5th business is reference, the business of RRU is sent out passage carry out the passage relative correction, and to obtain the 4th correction coefficient of the 4th RRU correspondence, wherein, the 5th professional one of them professional passage that passage is the 4th RRU; The 5th professional passage of receiving by the 4th RRU, receive first base station by the 4th professional the 5th correction signal of sending out the passage emission of a RRU, estimate the 5th channel response according to the 5th correction signal that receives by the 5th professional receipts passage, and obtain the 5th penalty coefficient according to the 5th channel response; By the 5th professional the 6th correction signal of sending out the passage emission of the 4th RRU, and receive the 6th penalty coefficient that first base station sends; Based on the 5th penalty coefficient and the 6th penalty coefficient the 4th receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on the 4th receipts correction coefficient of upgrading by the service signal that RRU receives, proofread and correct based on the 4th correction coefficient by the service signal of the 4th RRU emission; Perhaps, based on the 5th penalty coefficient and the 6th penalty coefficient the 4th correction coefficient that has obtained upgraded, wherein, service signal by the 4th RRU emission is proofreaied and correct based on the 4th correction coefficient of upgrading, and proofreaies and correct based on the 4th receipts correction coefficient by the service signal reception that the 4th RRU receives.

Be appreciated that by introducing the 3rd base station and the 4th base station, can be conducive to realize building of complicated cell base station system, and then be conducive to the elevator system capacity.

Wherein, first base station 1610, second base station 1620, the 3rd base station 1630, the 4th base station 1610 also may be shared a BBU, or be deployed in same position.

The embodiment of the invention also provides a kind of computer-readable storage medium, and wherein, this computer-readable storage medium can have program stored therein, and this program comprises the part or all of step of the RRU joint channel bearing calibration of putting down in writing among the said method embodiment when carrying out.

Need to prove, for aforesaid each method embodiment, for simple description, so it all is expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not subjected to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the specification all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.

In the above-described embodiments, the description of each embodiment is all emphasized particularly on different fields, do not have the part that describes in detail among certain embodiment, can be referring to the associated description of other embodiment.

In several embodiment that the application provides, should be understood that disclosed device can be realized by other mode.For example, device embodiment described above only is schematic, the for example division of described unit, only be that a kind of logic function is divided, during actual the realization other dividing mode can be arranged, for example a plurality of unit or assembly can in conjunction with or can be integrated into another system, or some features can ignore, or do not carry out.Another point, the shown or coupling each other discussed or directly to be coupled or to communicate to connect can be by some interfaces, the indirect coupling of device or unit or communicate to connect can be electrically or other form.

Described unit as separating component explanation can or can not be physically to separate also, and the parts that show as the unit can be or can not be physical locations also, namely can be positioned at a place, perhaps also can be distributed on a plurality of network element.Can select wherein some or all of unit to realize the purpose of present embodiment scheme according to the actual needs.

In addition, each functional unit in each embodiment of the present invention can be integrated in the processing unit, also can be that the independent physics in each unit exists, and also can be integrated in the unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, also can adopt the form of SFU software functional unit to realize.

If described integrated unit is realized with the form of SFU software functional unit and during as independently production marketing or use, can be stored in the computer read/write memory medium.Based on such understanding, part or all or part of of this technical scheme that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprises that some instructions are used so that a computer equipment (can be personal computer, server or the network equipment etc.) is carried out all or part of step of the described method of each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), portable hard drive, magnetic disc or CD.

The above, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (36)

1. the channel combined bearing calibration of long-distance radio frequency unit RRU is characterized in that, comprising:

Carry out the passage self-correcting of the 2nd RRU, receive self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence;

Calibration reference by described the 2nd RRU is received passage, receive first professional first correction signal of sending out the passage emission by a RRU, described first correction signal that receives according to the calibration reference receipts passage by described the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to described first channel response;

Send out second correction signal of passage emission by the calibration reference of described the 2nd RRU, and receive second penalty coefficient, wherein, response obtains described second penalty coefficient based on second channel, and described second channel response is described second correction signal that the first professional receipts passage by a described RRU receives to be carried out channel estimating obtain;

Receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the described second receipts correction coefficient by the service signal that described the 2nd RRU receives, proofread and correct from correction coefficient based on described second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, wherein, service signal by described the 2nd RRU emission is proofreaied and correct based on described second correction coefficient, proofreaies and correct based on the described second receipts self-correcting coefficient by the service signal reception that described the 2nd RRU receives.

2. method according to claim 1, it is characterized in that, the passage self-correcting of described execution the 2nd RRU, receive self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence, comprise: carry out the passage self-correcting of the 2nd RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of described the 2nd RRU second from correction coefficient, and obtain second of professional each the subcarrier correspondence of receiving passage of each of described the 2nd RRU and receive self-correcting coefficient, wherein

${\mathrm{\&beta;}}_{k2,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{ct}}\left(n\right)h_{k2,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k2,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{cr}}\left(n\right)h_{k2,i}^t\left(n\right)};$

Wherein, described k2 represents the numbering of the 2nd RRU, and is described

Represent the channel response of business receipts passage i on subcarrier n of the 2nd RRU, described

Represent the channel response of described calibration reference receipts passage on subcarrier n of the 2nd RRU, described

Represent that the described calibration reference of the 2nd RRU sends out the channel response of passage on subcarrier n, described

Represent that the business of the 2nd RRU sends out the channel response of passage i on subcarrier n;

Wherein, described The business of representing described the 2nd RRU receive passage i subcarrier n correspondence second receive the self-correcting coefficient, described The business of representing described the 2nd RRU send out passage i subcarrier n correspondence second from correction coefficient.

3. method according to claim 1 and 2 is characterized in that,

Describedly receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain second and receive correction coefficient, comprise: with described second penalty coefficient divided by described first penalty coefficient obtaining the first relative penalty coefficient, receive the self-correcting coefficient with described second and multiply by the described first relative penalty coefficient to obtain the second receipts correction coefficient; Perhaps, with described first penalty coefficient divided by described second penalty coefficient obtaining the second relative penalty coefficient, with described second receive the self-correcting coefficient divided by the described second relative penalty coefficient to obtain the second receipts correction coefficient.

4. method according to claim 1 and 2 is characterized in that,

Describedly obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, comprise: with described second penalty coefficient divided by described first penalty coefficient obtaining the first relative penalty coefficient, with described second from correction coefficient divided by the described first relative penalty coefficient to obtain second correction coefficient; Perhaps, with described first penalty coefficient divided by described second penalty coefficient to obtain the second relative penalty coefficient, multiply by the described second relative penalty coefficient to obtain second correction coefficient with described second from correction coefficient.

5. the channel combined bearing calibration of long-distance radio frequency unit RRU is characterized in that, comprising:

Carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence;

Receiving passage with first business is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU;

Sending out passage with first business is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, described first professional one of them professional passage of sending out that passage is a described RRU; Wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient;

The described first professional passage of sending out by a described RRU is launched first correction signal;

The described first professional passage of receiving by a described RRU, second correction signal of passage emission is sent out in reception by the calibration reference of described the 2nd RRU, estimate the second channel response according to described second correction signal that receives by the described first professional receipts passage, and according to described second channel response obtains second penalty coefficient, described second penalty coefficient is transmitted in the base station under described the 2nd RRU.

6. method according to claim 5, it is characterized in that, the passage self-correcting of described execution the one RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence, comprise: carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a described RRU first from correction coefficient, and obtain first of professional each the subcarrier correspondence of receiving passage of each of a described RRU and receive self-correcting coefficient, wherein

${\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k1}^{\mathrm{ct}}\left(n\right)h_{k1,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k1}^{\mathrm{cr}}\left(n\right)h_{k1,i}^t\left(n\right)};$

Wherein, described k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU, The channel response of calibration reference receipts passage on subcarrier n of representing a RRU, Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient.

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

Described is reference with the first professional receipts passage, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{k1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, described p represents the numbering in the first professional collection of letters road, and is described

The business of representing a described RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive correction coefficient.

8. according to claim 6 or 7 described methods, it is characterized in that,

Described is reference with first professional passage, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{k1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, described p represents the first professional numbering of sending out passage, and is described

The business of representing a described RRU send out passage p subcarrier n correspondence first from correction coefficient, described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

9. according to each described method of claim 5 to 8, it is characterized in that,

Described method also comprises:

The described first professional passage of sending out by a described RRU is launched the 3rd correction signal;

The described first professional passage of receiving by a described RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of described the 3rd RRU, estimate the 4th channel response according to described the 4th correction signal that receives by the described first professional receipts passage, and obtaining the 4th penalty coefficient according to described the 4th channel response, described the 4th penalty coefficient is transmitted in the base station under described the 3rd RRU.

10. according to each described method of claim 5 to 9, it is characterized in that,

Described method also comprises:

The 4th professional passage of sending out by a described RRU is launched the 5th correction signal;

The 4th professional passage of receiving by a described RRU receives the 6th correction signal of sending out the passage emission by the 5th business of described the 4th RRU, estimate the 6th channel response according to described the 6th correction signal that receives by the described the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to described the 6th channel response, described the 6th penalty coefficient is transmitted in the base station under described the 4th RRU;

The service signal reception of a described RRU is proofreaied and correct based on the described first receipts correction coefficient and is comprised:

The professional service signal of receiving passage of each of a described RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a described RRU;

The service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient and is comprised:

The professional service signal emission of sending out passage of each of a described RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a described RRU based on each professional first correction coefficient sending out the passage correspondence.

11. a long-distance radio frequency unit RRU channel correcting device is characterized in that, comprising:

The self-correcting unit is used for carrying out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence;

First receiving element is used for receiving passage by the calibration reference of described the 2nd RRU, receives first professional first correction signal of sending out the passage emission by a RRU;

Estimation unit is used for estimating first channel response according to described first correction signal that the calibration reference receipts passage by described the 2nd RRU receives, and obtains first penalty coefficient according to described first channel response;

Transmitter unit is used for sending out second correction signal that passage is launched by the calibration reference of described the 2nd RRU;

Second receiving element, be used for receiving second penalty coefficient, wherein, response obtains described second penalty coefficient based on second channel, and described second channel response is described second correction signal that the first professional receipts passage by a described RRU receives to be carried out channel estimating obtain;

Correcting unit, be used for receiving the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the described second receipts correction coefficient by the service signal that described the 2nd RRU receives, proofread and correct from correction coefficient based on described second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, wherein, service signal by described the 2nd RRU emission is proofreaied and correct based on described second correction coefficient, proofreaies and correct based on the described second receipts self-correcting coefficient by the service signal reception that described the 2nd RRU receives.

12. device according to claim 11, it is characterized in that, described self-correcting unit, the concrete passage self-correcting that is used for carrying out the 2nd RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of described the 2nd RRU second from correction coefficient, and obtain second of professional each the subcarrier correspondence of receiving passage of each of described the 2nd RRU and receive self-correcting coefficient, wherein

${\mathrm{\&beta;}}_{k2,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{ct}}\left(n\right)h_{k2,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k2,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k2}^{\mathrm{cr}}\left(n\right)h_{k2,i}^t\left(n\right)};$

Wherein, described k2 represents the numbering of the 2nd RRU, and is described Represent the channel response of business receipts passage i on subcarrier n of the 2nd RRU, described

Represent the channel response of described calibration reference receipts passage on subcarrier n of the 2nd RRU, described

Represent that the described calibration reference of the 2nd RRU sends out the channel response of passage on subcarrier n, described

Represent that the business of the 2nd RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing described the 2nd RRU receive passage i subcarrier n correspondence second receive the self-correcting coefficient, described

The business of representing described the 2nd RRU send out passage i subcarrier n correspondence second from correction coefficient.

13. according to claim 11 or 12 described devices, it is characterized in that,

Described correcting unit specifically is used for, receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, comprise: with described second penalty coefficient divided by described first penalty coefficient obtaining the first relative penalty coefficient, receive the self-correcting coefficient with described second and multiply by the described first relative penalty coefficient to obtain the second receipts correction coefficient; Perhaps, with described first penalty coefficient divided by described second penalty coefficient obtaining the second relative penalty coefficient, with described second receive the self-correcting coefficient divided by the described second relative penalty coefficient to obtain the second receipts correction coefficient;

Perhaps,

Described correcting unit specifically is used for, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, comprise: with described second penalty coefficient divided by described first penalty coefficient obtaining the first relative penalty coefficient, with described second from correction coefficient divided by the described first relative penalty coefficient to obtain second correction coefficient; Perhaps, with described first penalty coefficient divided by described second penalty coefficient to obtain the second relative penalty coefficient, multiply by the described second relative penalty coefficient to obtain second correction coefficient with described second from correction coefficient.

14. a long-distance radio frequency unit RRU channel correcting device is characterized in that, comprising:

The self-correcting unit is used for carrying out the passage self-correcting of a RRU, receives self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence;

The first relative correction unit, being used for the first professional receipts passage is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU;

The second relative correction unit, being used for first professional passage is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, described first professional one of them professional passage of sending out that passage is a described RRU; Wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient;

First transmitter unit is used for launching first correction signal by the described first professional passage of sending out of a described RRU;

Receiving element is used for the described first professional passage of receiving by a described RRU, receives second correction signal of sending out the passage emission by the calibration reference of described the 2nd RRU;

Estimation unit is used for estimating the second channel response according to described receiving element by described second correction signal that the described first professional receipts passage receives, and obtains second penalty coefficient according to described second channel response;

Second transmitter unit transmits described second penalty coefficient for base station under described the 2nd RRU.

15. device according to claim 14 is characterized in that,

Described self-correcting unit specifically is used for, carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a described RRU first from correction coefficient, and each business that obtains a described RRU is received first receipts self-correcting coefficient of each subcarrier correspondence of passage, wherein

${\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k1}^{\mathrm{ct}}\left(n\right)h_{k1,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k1}^{\mathrm{cr}}\left(n\right)h_{k1,i}^t\left(n\right)};$

Wherein, described k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient.

16. device according to claim 15 is characterized in that,

The first relative correction unit specifically is used in the following way, is reference with the first professional receipts passage, and the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, wherein,

${\widetilde{\mathrm{\&beta;}}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{k1,p}^{\mathrm{UL}}\left(n\right)};$

Wherein, described p represents the numbering in the first professional collection of letters road, and is described

The business of representing a described RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive correction coefficient.

17. according to claim 15 or 16 described devices, it is characterized in that,

The described second relative correction unit, concrete being used in the following way is reference with first professional passage, the business of a described RRU sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein,

${\widetilde{\mathrm{\&beta;}}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{k1,p}^{\mathrm{DL}}\left(n\right)};$

Wherein, described p represents the first professional numbering of sending out passage, and is described

The business of representing a described RRU send out passage p subcarrier n correspondence first from correction coefficient, described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

18. according to each described device of claim 14 to 17, it is characterized in that,

Described first transmitter unit also is used for, and launches the 3rd correction signal by the described first professional passage of sending out of a described RRU;

Described receiving element also is used for, and receive passage by described first business of a described RRU and receive the 4th correction signal of launching by the 3rd business passage of described the 3rd RRU,

Described estimation unit also is used for, and estimates the 4th channel response according to described the 4th correction signal that receives by the described first professional receipts passage, and obtains the 4th penalty coefficient according to described the 4th channel response;

Described second transmitter unit also is used for, and described the 4th penalty coefficient is transmitted in the base station under described the 3rd RRU.

19. according to each described device of claim 14 to 18, it is characterized in that,

Described first transmitter unit also is used for, and launches the 5th correction signal by the 4th professional passage of sending out of a described RRU;

Described receiving element also is used for, and receive passage by the 4th business of a described RRU and receive the 6th correction signal of launching by the 5th business passage of described the 4th RRU,

Described estimation unit also is used for, and estimates the 6th channel response according to described the 6th correction signal that receives by the described the 4th professional receipts passage, and obtains the 6th penalty coefficient according to described the 6th channel response;

Described second transmitter unit also is used for, and described the 6th penalty coefficient is transmitted in the base station under described the 4th RRU;

Wherein, the professional service signal of receiving passage of each of a described RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a described RRU; The professional service signal emission of sending out passage of each of a described RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a described RRU based on each professional first correction coefficient sending out the passage correspondence.

20. a communication system is characterized in that, comprising:

First base station is used for carrying out the passage self-correcting of a RRU, receives self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence; Receiving passage with first business is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU; Sending out passage with first business is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, described first professional one of them professional passage of sending out that passage is a described RRU; Wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient; The described first professional passage of sending out by a described RRU is launched first correction signal; The described first professional passage of receiving by a described RRU, second correction signal of passage emission is sent out in reception by the calibration reference of described the 2nd RRU, estimate the second channel response according to described second correction signal that receives by the described first professional receipts passage, and according to described second channel response obtains second penalty coefficient, described second penalty coefficient is transmitted in second base station under described the 2nd RRU;

Described second base station is used for carrying out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence; Calibration reference by described the 2nd RRU is received passage, receive first professional first correction signal of sending out the passage emission by a RRU, described first correction signal that receives according to the calibration reference receipts passage by described the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to described first channel response; Send out second correction signal of passage emission by the calibration reference of described the 2nd RRU, and receive described second penalty coefficient that described first base station sends; Receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, wherein the service signal that receives by described the 2nd RRU is proofreaied and correct based on the described second receipts correction coefficient, proofreaies and correct from correction coefficient based on described second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, wherein, service signal by described the 2nd RRU emission is proofreaied and correct based on described second correction coefficient, proofreaies and correct based on the described second receipts self-correcting coefficient by the service signal reception that described the 2nd RRU receives.

21. communication system according to claim 20 is characterized in that,

Described communication system also comprises: the 3rd base station,

Wherein, described first base station also is used for, and launches the 3rd correction signal by the described first professional passage of sending out of a described RRU; The described first professional passage of receiving by a described RRU receives described the 3rd base station by the 3rd professional the 4th correction signal of sending out the passage emission of described the 3rd RRU, estimate the 4th channel response according to described the 4th correction signal that receives by the described first professional receipts passage, and obtaining the 4th penalty coefficient according to described the 4th channel response, described the 4th penalty coefficient is transmitted in the 3rd base station under described the 3rd RRU;

Described the 3rd base station is used for, and carries out the passage self-correcting of the 3rd RRU, receives self-correcting coefficient and the 3rd from correction coefficient to obtain the 3rd of described the 3rd RRU correspondence; Receiving passage with the 3rd business is reference, the business of described the 3rd RRU is received passage carry out the passage relative correction to obtain the 3rd receipts correction coefficient of described the 3rd RRU correspondence, wherein, described the 3rd business is received one of them professional passage of receiving that passage is described the 3rd RRU; Sending out passage with the 3rd business is reference, the business of described the 3rd RRU is sent out passage carry out the passage relative correction to obtain the 3rd correction coefficient of described the 3rd RRU correspondence, wherein, the described the 3rd professional one of them professional passage of sending out that passage is described the 3rd RRU;

The 3rd professional passage of receiving by described the 3rd RRU, receive described first base station by first professional the 3rd correction signal of sending out the passage emission of a RRU, estimate the 3rd channel response according to described the 3rd correction signal that receives by the described the 3rd professional receipts passage, and obtain the 3rd penalty coefficient according to described the 3rd channel response; By the 3rd professional the 4th correction signal of sending out the passage emission of described the 3rd RRU, and receive described the 4th penalty coefficient that described first base station sends;

Based on described the 3rd penalty coefficient and described the 4th penalty coefficient described the 3rd receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on described the 3rd receipts correction coefficient of upgrading by the service signal that described the 3rd RRU receives, proofread and correct based on described the 3rd correction coefficient by the service signal of the 3rd RRU emission; Perhaps, based on described the 3rd penalty coefficient and described the 4th penalty coefficient the 3rd correction coefficient that has obtained upgraded, wherein, service signal by described the 3rd RRU emission is proofreaied and correct based on described the 3rd correction coefficient of upgrading, and proofreaies and correct based on described the 3rd receipts correction coefficient by the service signal reception that described the 3rd RRU receives.

22. according to claim 20 or 21 described communication systems, it is characterized in that,

Described communication system also comprises: the 4th base station,

Wherein, described first base station also is used for, and launches the 5th correction signal by the 4th professional passage of sending out of a described RRU; The 4th professional passage of receiving by a described RRU receives the 6th correction signal of sending out the passage emission by the 5th business of described the 4th RRU, estimate the 6th channel response according to described the 6th correction signal that receives by the described the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to described the 6th channel response, described the 6th penalty coefficient is transmitted in the base station under described the 4th RRU; Wherein, the professional service signal of receiving passage of each of a described RRU receives, and receives correction coefficient based on first of each professional receipts passage correspondence and proofreaies and correct with the 4th professional first corresponding ratio of receiving correction coefficient of passage of receiving of a described RRU; The professional service signal emission of sending out passage of each of a described RRU is proofreaied and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a described RRU based on each professional first correction coefficient sending out the passage correspondence;

Described the 4th base station is used for, and carries out the passage self-correcting of the 4th RRU, receives self-correcting coefficient and the 4th from correction coefficient to obtain the 4th of described the 4th RRU correspondence; Receiving passage with the 5th business is reference, the business of described the 4th RRU is received passage carry out the passage relative correction to obtain the 4th receipts correction coefficient of described the 4th RRU correspondence, wherein, described the 5th business is received one of them professional passage of receiving that passage is described the 4th RRU; Sending out passage with the 5th business is reference, the business of described the 4th RRU is sent out passage carry out the passage relative correction, to obtain the 4th correction coefficient of described the 4th RRU correspondence, wherein, the described the 5th professional one of them professional passage of sending out that passage is described the 4th RRU;

The 5th professional passage of receiving by described the 4th RRU, receive described first base station by the 4th professional the 5th correction signal of sending out the passage emission of a RRU, estimate the 5th channel response according to described the 5th correction signal that receives by the described the 5th professional receipts passage, and obtain the 5th penalty coefficient according to described the 5th channel response; By the 5th professional the 6th correction signal of sending out the passage emission of described the 4th RRU, and receive described the 6th penalty coefficient that described first base station sends;

Based on described the 5th penalty coefficient and described the 6th penalty coefficient described the 4th receipts correction coefficient that has obtained is upgraded, wherein, proofread and correct based on described the 4th receipts correction coefficient of upgrading by the service signal that described the 4th RRU receives, proofread and correct based on described the 4th correction coefficient by the service signal of the 4th RRU emission; Perhaps, based on described the 5th penalty coefficient and described the 6th penalty coefficient the 4th correction coefficient that has obtained upgraded, wherein, service signal by described the 4th RRU emission is proofreaied and correct based on described the 4th correction coefficient of upgrading, and proofreaies and correct based on described the 4th receipts correction coefficient by the service signal reception that described the 4th RRU receives.

23. the channel combined bearing calibration of long-distance radio frequency unit RRU is characterized in that, comprising:

Carry out the passage self-correcting of a RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence;

Receiving reference value with first is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence;

Be reference with first reference value, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient;

The first professional passage of sending out by a described RRU is launched first correction signal;

The first professional passage of receiving by a described RRU, second correction signal of passage emission is sent out in reception by the calibration reference of described the 2nd RRU, estimate the second channel response according to described second correction signal that receives by the described first professional receipts passage, response obtains second penalty coefficient according to second channel, described second penalty coefficient is transmitted in the base station under described the 2nd RRU, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU; Described first professional one of them professional passage of sending out that passage is a described RRU.

24. method according to claim 23 is characterized in that,

The passage self-correcting of described execution the one RRU, receive self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence, comprise: carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a described RRU first from correction coefficient, and each business that obtains a described RRU is received first receipts self-correcting coefficient of each subcarrier correspondence of passage, wherein

${\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k1}^{\mathrm{ct}}\left(n\right)h_{k1,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k1}^{\mathrm{cr}}\left(n\right)h_{k1,i}^t\left(n\right)};$

Wherein, described k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU, The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient.

25. method according to claim 24 is characterized in that,

Described is reference with the first receipts reference value, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{k1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)};$

Wherein, described

First of expression subcarrier n correspondence is received reference value, and is described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive correction coefficient.

26. according to claim 24 or 25 described methods, it is characterized in that,

Described is reference with first reference value, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{k1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)};$

Wherein, described

First reference value of expression subcarrier n correspondence, described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

27. according to claim method according to claim 26, it is characterized in that,

Described first professional first correction signal of sending out the subcarrier n emission of passage by a described RRU is

Wherein, S (n) is reference signal or training signal, and p2 is the first professional numbering of sending out passage, and is described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage p2.

28., it is characterized in that according to each described method of claim 23 to 27 according to claim,

First of subcarrier n correspondence is received reference value Perhaps, first of subcarrier n correspondence receive reference value

Wherein, described

The business of representing a described RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, it is described that professional to receive passage p identical or different with the first professional receipts passage;

First reference value of subcarrier n correspondence

Perhaps, first of subcarrier n correspondence reference value

Wherein, described

The business of representing a described RRU send out passage p subcarrier n correspondence first from correction coefficient, described business sends out passage p and first professional to send out passage identical or different;

Wherein, ${\mathrm{\&theta;}}_{k1}^{\mathrm{DL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{k1,i}^{\mathrm{DL}}\left(n\right),$

${\mathrm{\&theta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)\right),$

Wherein, ${\mathrm{\&theta;}}_{k1}^{\mathrm{UL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{k1,i}^{\mathrm{UL}}\left(n\right),$

${\mathrm{\&theta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)\right),$

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient, described N _ANTBusiness receipts passage or the professional sum of sending out passage of representing a described RRU,

Expression

Corresponding is the phase place of unit with the radian,

Expression

Be the phase place of unit with the radian.

29. according to each described method of claim 23 to 28, it is characterized in that,

Described method also comprises:

The described first professional passage of sending out by a described RRU is launched the 3rd correction signal;

The described first professional passage of receiving by a described RRU receives the 4th correction signal of sending out the passage emission by the 3rd business of described the 3rd RRU, estimate the 4th channel response according to described the 4th correction signal that receives by the described first professional receipts passage, and obtaining the 4th penalty coefficient according to described the 4th channel response, described the 4th penalty coefficient is transmitted in the base station under described the 3rd RRU.

30. according to each described method of claim 23 to 29, it is characterized in that,

Described method also comprises:

The 4th professional passage of sending out by a described RRU is launched the 5th correction signal; The 4th professional passage of receiving by a described RRU receives the 6th correction signal of sending out the passage emission by the 5th business of described the 4th RRU, estimate the 6th channel response according to described the 6th correction signal that receives by the described the 4th professional receipts passage, and obtaining the 6th penalty coefficient according to described the 6th channel response, described the 6th penalty coefficient is transmitted in the base station under described the 4th RRU;

The service signal reception of a described RRU is proofreaied and correct based on the described first receipts correction coefficient and comprised: the professional service signal of receiving passage of each of a described RRU receives, and receives the 4th professional ratio of receiving the first corresponding receipts correction coefficient of passage of correction coefficient and a described RRU based on first of each business receipts passage correspondence and proofreaies and correct;

The service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient and is comprised: the professional service signal emission of sending out passage of each of a described RRU, proofread and correct with the 4th professional ratio of sending out first corresponding correction coefficient of passage of a described RRU based on each professional first correction coefficient sending out the passage correspondence.

31. the channel combined means for correcting of long-distance radio frequency unit RRU is characterized in that, comprising:

The passage self-correcting of a RRU is carried out in the self-correcting unit, receives self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence;

The first relative correction unit, being used for receiving reference value with first is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence;

The second relative correction unit, being used for first reference value is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient;

First transmitter unit is used for launching first correction signal by the first professional passage of sending out of a described RRU, described first professional one of them professional passage of sending out that passage is a described RRU;

Receiving element is used for receiving passage by first business of a described RRU, receives second correction signal of sending out the passage emission by the calibration reference of described the 2nd RRU, wherein, and one of them professional passage of receiving that the described first professional receipts passage is a described RRU;

Estimation unit is used for estimating the second channel response according to described second correction signal that receives by the described first professional receipts passage, and response obtains second penalty coefficient according to second channel;

Second transmitter unit, described second penalty coefficient is transmitted in the base station under described the 2nd RRU.

32. device according to claim 31 is characterized in that,

Described self-correcting unit specifically is used for, carry out the passage self-correcting of a RRU, with obtain professional each the subcarrier correspondence of sending out passage of each of a described RRU first from correction coefficient, and each business that obtains a described RRU is received first receipts self-correcting coefficient of each subcarrier correspondence of passage, wherein

${\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_{k1}^{\mathrm{ct}}\left(n\right)h_{k1,i}^r\left(n\right)};$ ${\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_{k1}^{\mathrm{cr}}\left(n\right)h_{k1,i}^t\left(n\right)};$

Wherein, described k1 represents the numbering of a RRU,

The channel response of business receipts passage i on subcarrier n of representing a RRU,

The channel response of calibration reference receipts passage on subcarrier n of representing a RRU,

Represent that the calibration reference of a RRU sends out the channel response of passage on subcarrier n;

Represent that the business of a RRU sends out the channel response of passage i on subcarrier n;

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient.

33. device according to claim 32 is characterized in that,

The first relative correction unit, concrete being used in the following way, receiving reference value with first is reference, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{k1,\mathrm{ref}}^{\mathrm{UL}}\left(n\right)};$

Wherein, described

First of expression subcarrier n correspondence is received reference value, and is described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive correction coefficient.

34. according to claim 32 or 33 described methods, it is characterized in that,

The described second relative correction unit, concrete being used in the following way is reference with first reference value, the business of a described RRU sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, comprising:

${\widetilde{\mathrm{\&beta;}}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{k1,\mathrm{ref}}^{\mathrm{DL}}\left(n\right)};$

Wherein, described

First reference value of expression subcarrier n correspondence, described

Represent that the business of a described RRU sends out first correction coefficient of the subcarrier n correspondence of passage i.

35., it is characterized in that according to each described device of claim 31 to 34 according to claim,

First of subcarrier n correspondence is received reference value Perhaps, first of subcarrier n correspondence receive reference value

Wherein, described

The business of representing a described RRU receive passage p subcarrier n correspondence first receive the self-correcting coefficient, it is described that professional to receive passage p identical or different with the first professional receipts passage;

First reference value of subcarrier n correspondence

Perhaps, first of subcarrier n correspondence reference value

Wherein, described

The business of representing a described RRU send out passage p subcarrier n correspondence first from correction coefficient, described business sends out passage p and first professional to send out passage identical or different;

Wherein, ${\mathrm{\&theta;}}_{k1}^{\mathrm{DL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{k1,i}^{\mathrm{DL}}\left(n\right),$

${\mathrm{\&theta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{k1,i}^{\mathrm{DL}}\left(n\right)\right),$

Wherein, ${\mathrm{\&theta;}}_{k1}^{\mathrm{UL}}\left(n\right)=\frac{1}{N_{\mathrm{ANT}-1}}\underset{i=0}{\overset{N_{\mathrm{ANT}-1}}{\mathrm{\&Sigma;}}}{\mathrm{\&theta;}}_{k1,i}^{\mathrm{UL}}\left(n\right),$

${\mathrm{\&theta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)=\mathrm{angle}\left({\mathrm{\&beta;}}_{k1,i}^{\mathrm{UL}}\left(n\right)\right),$

Wherein, described

The business of representing a described RRU receive passage i subcarrier n correspondence first receive the self-correcting coefficient, described

The business of representing a described RRU send out passage i subcarrier n correspondence first from correction coefficient, described N _ANTRepresent professional passage or the professional sum of sending out passage received of a described RRU,

Expression

Corresponding is the phase place of unit with the radian,

Expression

Be the phase place of unit with the radian.

36. a communication system is characterized in that, comprising:

First base station is used for carrying out the passage self-correcting of a RRU, receives self-correcting coefficient and first from correction coefficient to obtain first of a described RRU correspondence; Receiving reference value with first is reference, the business of a described RRU is received passage carry out the passage relative correction to obtain the first receipts correction coefficient of a described RRU correspondence; Be reference with first reference value, the business of a described RRU is sent out passage carry out the passage relative correction to obtain first correction coefficient of a described RRU correspondence, wherein, the service signal of a described RRU receives based on the described first receipts correction coefficient and proofreaies and correct, and the service signal emission of a described RRU is proofreaied and correct based on described first correction coefficient; The first professional passage of sending out by a described RRU is launched first correction signal; The first professional passage of receiving by a described RRU, second correction signal of passage emission is sent out in reception by the calibration reference of described the 2nd RRU, estimate the second channel response according to described second correction signal that receives by the described first professional receipts passage, response obtains second penalty coefficient according to second channel, described second penalty coefficient is transmitted in second base station under described the 2nd RRU, wherein, described first business is received one of them professional passage of receiving that passage is a described RRU; Described first professional one of them professional passage of sending out that passage is a described RRU;

Described second base station is used for carrying out the passage self-correcting of the 2nd RRU, receives self-correcting coefficient and second from correction coefficient to obtain second of described the 2nd RRU correspondence; Calibration reference by described the 2nd RRU is received passage, receive described first base station by first professional first correction signal of sending out the passage emission of a RRU, described first correction signal that receives according to the calibration reference receipts passage by described the 2nd RRU estimates first channel response, and obtains first penalty coefficient according to described first channel response; Send out second correction signal of passage emission by the calibration reference of described the 2nd RRU, and receive described second penalty coefficient that described first base station sends; Receive the self-correcting coefficient based on described first penalty coefficient, described second penalty coefficient and described second and obtain the second receipts correction coefficient, wherein, proofread and correct based on the described second receipts correction coefficient by the service signal that described the 2nd RRU receives, proofread and correct from correction coefficient based on described second by the service signal of the 2nd RRU emission; Perhaps, obtain second correction coefficient based on described first penalty coefficient, described second penalty coefficient and described second from correction coefficient, wherein, service signal by described the 2nd RRU emission is proofreaied and correct based on described second correction coefficient, proofreaies and correct based on the described second receipts self-correcting coefficient by the service signal reception that described the 2nd RRU receives.

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