CN103905353A - Inter-RRU united channel correcting method and device - Google Patents

Abstract

The embodiment of the invention provides an inter-RRU united channel correcting method and device. According to the method, external correction type or internal correction type inter-RRU united channel correction is conducted by means of a leaky cable, the ratios of the values obtained after the transmitting correction coefficients of transmission channels of different RRUs are multiplied by the corresponding channel responses of the transmission channels to the values obtained after the receiving correction coefficients of receiving channels of different RRUs are multiplied by the corresponding channel responses of the receiving channels are made identical, correction of channels among multiple cells is realized, and the requirement of JT for channel reciprocity are met.

Description

The method and apparatus that between a kind of RRU, joint channel is proofreaied and correct

Technical field

The invention belongs to the communications field, relate in particular to the method and apparatus that between a kind of RRU, joint channel is proofreaied and correct.

Background technology

At time division duplex (Time Division Duplexing, TDD) in system, base station is by detecting user (User Equipment, UE) detection reference signal (the Sounding Reference Signal sending, SRS) signal, up channel is estimated, and utilized the reciprocity of TDD system up-downgoing, carry out wave beam forming using the up channel estimating as down channel.Although TDD system in theory, up-downgoing is reciprocity, but in real system, up-downgoing channel has been introduced respectively different radio-frequency channel, base station, the response of these radio-frequency channels is different, and this just need to compensate these passages by the means of channel correcting.Find by theory analysis, only need the ratio of the up/down row radio-frequency channel that each antenna is corresponding all to equal same value, just can meet the requirement of wave beam forming.The existing maturation method of the channel correcting of single subdistrict at present.

Coordinate multipoint (Coordinated Multi-Point, CoMP) is a key characteristic of Long Term Evolution plan (Long Term Evolution, LTE), utilizes CoMP technology can effectively resist the interference problem of LTE cell edge.JT (Joint Transmission, belongs to JP in CoMP, Joint Process one type) technology, as the one of CoMP technology, can significantly improve cell edge and on average handle up.For in TDD system, realize and combine the gain that transmission (Joint Transmission, JT) technology is brought, need to carry out equally channel correcting.Yu Dan community wave beam forming technology is different, and the ratio of the up-downgoing radio-frequency channel channel response that each antenna of the multiple communities of JT Technology Need is corresponding is identical.Even if channel correcting has been carried out respectively in each community, if do not carry out the correction of minizone, JT technology still can not arrive the performance of expectation.

Summary of the invention

The object of the embodiment of the present invention is to provide a kind of method that between RRU, joint channel is proofreaied and correct, and has solved the problem of channel correcting between multiple RRU, to meet the requirement of JT to passage reciprocity.

First aspect, a kind of method that between RRU, joint channel is proofreaied and correct, described method comprises:

Carry out the joint channel correction between different RRUs by revealing cable, make described correction coefficient between different RRUs be multiplied by the value of the corresponding channel response of sending out passage, and described receipts correction coefficient between described different RRU to be multiplied by the ratio of value of the channel response of corresponding receipts passage identical.

In conjunction with first aspect, in the possible implementation of the first of first aspect, described joint channel of being undertaken between different RRUs by leakage cable is proofreaied and correct, and comprising:

Same RRU is by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Described RRU carries out two joint channel corrections between RRU by revealing cable;

Regard two RRU after proofreading and correct as an overall RRU, carry out joint channel correction by revealing cable with the 3rd RRU;

Regard three RRU after proofreading and correct as an overall RRU, carry out joint channel correction by revealing cable with the 4th RRU, the rest may be inferred, completes the joint channel correction between different RRUs by revealing cable.

In conjunction with first aspect, in the possible implementation of the second of first aspect, described joint channel of being undertaken between different RRUs by leakage cable is proofreaied and correct, and comprising:

Choose the reference RRU that any one RRU in described different RRUs proofreaies and correct as joint channel;

Described different RRUs is done joint channel correction by revealing cable with described any one RRU choosing.

In conjunction with the possible implementation of the second of the possible implementation of the first of first aspect or first aspect or first aspect, in the third possible implementation of first aspect, described method also comprises:

Different RRUs, by revealing cable, is carried out interior correction type or is proofreaied and correct the joint channel correction between type RRU outward.

In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation of first aspect, described different RRUs is by revealing cable, and the joint channel of carrying out between outer correction type RRU is proofreaied and correct, and comprising:

For described outer correction, due to calibration reference passage and coupling disc, or it is connected to proofread and correct coupling function module employing radio frequency cable, and described radio frequency cable is replaced by leakage cable, and the joint channel of carrying out between RRU is proofreaied and correct.

In conjunction with the third possible implementation of first aspect, in the 5th kind of possible implementation of first aspect, described different RRUs, by revealing cable, is carried out interior correction type or is proofreaied and correct the joint channel correction between type RRU outward, comprising:

Proofread and correct for the joint channel completing between multiple interior correction RRU, the radio frequency cable that replacing RRU root service channel is connected with antenna is for revealing cable, and the joint channel of carrying out between RRU is proofreaied and correct.

Second aspect, a kind of method that between RRU, joint channel is proofreaied and correct, described method comprises:

The joint channel of being undertaken between different RRUs by transmission medium is proofreaied and correct, the reference signal that described transmission medium is proofreaied and correct for transmission channel, make described correction coefficient between different RRUs be multiplied by the value of the corresponding channel response of sending out passage, and described receipts correction coefficient between described different RRU to be multiplied by the ratio of value of the channel response of corresponding receipts passage identical.

In conjunction with second aspect, in the possible implementation of the first of second aspect, described joint channel of being undertaken between different RRUs by transmission medium is proofreaied and correct, and comprising:

Same RRU is by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Described RRU carries out two joint channel between RRU by transmission medium and proofreaies and correct;

Regard two RRU after proofreading and correct as an overall RRU, follow the 3rd RRU to carry out joint channel correction by transmission medium;

Regard three RRU after proofreading and correct as an overall RRU, follow the 4th RRU to carry out joint channel correction by transmission medium, the rest may be inferred, and the joint channel completing between different RRUs by transmission medium is proofreaied and correct.

In conjunction with second aspect, in the possible implementation of the second of second aspect, described joint channel of being undertaken between different RRUs by transmission medium is proofreaied and correct, and comprising:

Choose the reference RRU that any one RRU in described different RRUs proofreaies and correct as joint channel;

Described different RRUs is followed described any one RRU choosing to make joint channel by transmission medium and is proofreaied and correct.

In conjunction with the possible implementation of the second of the possible implementation of the first of second aspect or second aspect or second aspect, in the third possible implementation of second aspect, described method also comprises:

Different RRUs, by transmission medium, is carried out interior correction type or is proofreaied and correct the joint channel correction between type RRU outward.

In conjunction with the third possible implementation of second aspect, in the 4th kind of possible implementation of second aspect, described different RRUs is by transmission medium, and the joint channel of carrying out between outer correction type RRU is proofreaied and correct, and comprising:

For described outer correction, due to calibration reference passage and coupling disc, or it is connected to proofread and correct coupling function module employing radio frequency cable, and described radio frequency cable is replaced by transmission medium, and the joint channel of carrying out between RRU is proofreaied and correct.

In conjunction with the third possible implementation of second aspect, in the 5th kind of possible implementation of second aspect, described different RRUs, by transmission medium, is carried out interior correction type or is proofreaied and correct the joint channel correction between type RRU outward, comprising:

Proofread and correct for the joint channel completing between multiple interior correction RRU, the radio frequency cable that replacing RRU root service channel is connected with antenna is transmission medium, and the joint channel of carrying out between RRU is proofreaied and correct.

The third aspect, the equipment that between a kind of RRU, joint channel is proofreaied and correct, described equipment comprises:

The first joint channel correcting unit, for carrying out the joint channel correction between different RRUs by revealing cable, make described correction coefficient between different RRUs be multiplied by the value of the corresponding channel response of sending out passage, and described receipts correction coefficient between described different RRU to be multiplied by the ratio of value of the channel response of corresponding receipts passage identical.

In conjunction with the third aspect, in the possible implementation of the first of the third aspect, described the first joint channel correcting unit, comprising:

Self-correcting unit, be used for same RRU by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Joint channel correcting unit, carries out two joint channel corrections between RRU for described RRU by revealing cable;

The first associated units, for regarding two RRU after proofreading and correct as an overall RRU, carries out joint channel correction by revealing cable with the 3rd RRU;

The second associated units, for regarding three RRU after proofreading and correct as an overall RRU, carries out joint channel correction by revealing cable with the 4th RRU, and the rest may be inferred, completes the joint channel correction between different RRUs by revealing cable.

In conjunction with the third aspect, in the possible implementation of the second of the third aspect, described the first joint channel correcting unit, comprising:

Choose unit, the reference RRU proofreading and correct as joint channel for choosing any one RRU of described different RRUs;

The 3rd associated units, does joint channel correction by revealing cable with described any one RRU choosing for described different RRUs.

In conjunction with the possible implementation of the second of the possible implementation of the first of the third aspect or the third aspect or the third aspect, in the third possible implementation of the third aspect, the described network equipment also comprises the second joint channel correcting unit:

Described the second joint channel correcting unit,, carries out interior correction type or proofreaies and correct the joint channel correction between type RRU outward by revealing cable for different RRUs.

In conjunction with the third possible implementation of the third aspect, in the 4th kind of possible implementation of the third aspect, described the second joint channel correcting unit, be used for for described outer correction, due to calibration reference passage and coupling disc, or proofread and correct coupling function module and adopt radio frequency cable to be connected, described radio frequency cable is replaced by leakage cable, the joint channel of carrying out between RRU is proofreaied and correct.

In conjunction with the third possible implementation of the third aspect, in the 5th kind of possible implementation of the third aspect, described the second joint channel correcting unit, for proofreading and correct for the joint channel completing between multiple RRU, the radio frequency cable that replacing RRU root service channel is connected with antenna is for revealing cable, and the joint channel of carrying out between RRU is proofreaied and correct.

Fourth aspect, the equipment that between a kind of RRU, joint channel is proofreaied and correct, described equipment comprises:

The first joint channel correcting unit, proofread and correct for the joint channel of being undertaken by transmission medium between different RRUs, the reference signal that described transmission medium is proofreaied and correct for transmission channel, make described correction coefficient between different RRUs be multiplied by the value of the corresponding channel response of sending out passage, and described receipts correction coefficient between described different RRU to be multiplied by the ratio of value of the channel response of corresponding receipts passage identical.

In conjunction with fourth aspect, in the possible implementation of the first of fourth aspect, described the first joint channel correcting unit, comprising:

Self-correcting unit, be used for same RRU by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Joint channel correcting unit, carries out two joint channel between RRU for described RRU by transmission medium and proofreaies and correct;

The first associated units, for regarding two RRU after proofreading and correct as an overall RRU, follows the 3rd RRU to carry out joint channel correction by transmission medium;

The second associated units, for regarding three RRU after proofreading and correct as an overall RRU, follows the 4th RRU to carry out joint channel correction by transmission medium, and the rest may be inferred, and the joint channel completing between different RRUs by transmission medium is proofreaied and correct.

In conjunction with fourth aspect, in the possible implementation of the second of fourth aspect, described the first joint channel correcting unit, comprising:

Choose unit, the reference RRU proofreading and correct as joint channel for choosing any one RRU of described different RRUs;

The 3rd associated units, follows described any one RRU choosing to make joint channel for described different RRUs by transmission medium and proofreaies and correct.

In conjunction with the possible implementation of the second of the possible implementation of the first of fourth aspect or fourth aspect or fourth aspect, in the third possible implementation of fourth aspect, described equipment also comprises the second joint channel correcting unit:

Described the second joint channel correcting unit,, carries out interior correction type or proofreaies and correct the joint channel correction between type RRU outward by transmission medium for different RRUs.

In conjunction with the third possible implementation of fourth aspect, in the 4th kind of possible implementation of fourth aspect, described the second joint channel correcting unit, be used for for described outer correction, due to calibration reference passage and coupling disc, or proofread and correct coupling function module and adopt radio frequency cable to be connected, described radio frequency cable is replaced by transmission medium, the joint channel of carrying out between RRU is proofreaied and correct.

In conjunction with the third possible implementation of fourth aspect, in the 5th kind of possible implementation of fourth aspect, described the second joint channel correcting unit, for proofreading and correct for the joint channel completing between multiple RRU, the radio frequency cable that replacing RRU root service channel is connected with antenna is transmission medium, and the joint channel of carrying out between RRU is proofreaied and correct.

Compared with prior art, the embodiment of the present invention is by carrying out the joint channel correction between RRU by revealing cable between different RRUs, make described correction coefficient between different RRUs be multiplied by the value of the corresponding channel response of sending out passage, and described receipts correction coefficient between described different RRU to be multiplied by the ratio of value of the channel response of corresponding receipts passage identical.Thereby solve the problem of channel correcting between multiple RRU, to meet the requirement of JT to passage reciprocity.

Brief description of the drawings

In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, to the accompanying drawing of required use in embodiment be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.

Fig. 1 is the method flow diagram that between a kind of RRU of providing of the embodiment of the present invention one, joint channel is proofreaied and correct;

Fig. 2 is a kind of wireless access system simplified block diagram that the embodiment of the present invention one provides;

Fig. 3 is the method schematic diagram that between the RRU of a kind of outer correction type that provides of the embodiment of the present invention one, joint channel is proofreaied and correct;

Fig. 4 is the method schematic diagram that between the RRU of a kind of outer correction type that provides of the embodiment of the present invention one, joint channel is proofreaied and correct;

Fig. 5 is the method schematic diagram that between the RRU of a kind of outer correction type that provides of the embodiment of the present invention one, joint channel is proofreaied and correct;

Fig. 6 is the method flow diagram that between a kind of RRU of providing of the embodiment of the present invention two, joint channel is proofreaied and correct;

Fig. 7 is the method schematic diagram that between a kind of inside and outside RRU that proofreaies and correct type that provides of the embodiment of the present invention three, joint channel is proofreaied and correct;

Fig. 8 is the method schematic diagram that between a kind of inside and outside RRU that proofreaies and correct type that provides of the embodiment of the present invention three, four, joint channel is proofreaied and correct;

Fig. 9 is the equipment structure chart that between a kind of RRU of providing of the embodiment of the present invention five, joint channel is proofreaied and correct;

Figure 10 is the equipment structure chart that between a kind of RRU of providing of the embodiment of the present invention six, joint channel is proofreaied and correct;

Figure 11 is the equipment structure chart that between a kind of RRU of providing of the embodiment of the present invention seven, joint channel is proofreaied and correct;

Figure 12 is the equipment structure chart that between a kind of RRU of providing of the embodiment of the present invention eight, joint channel is proofreaied and correct;

Figure 13 is the structure drawing of device of a kind of network equipment of providing of the embodiment of the present invention nine.

Embodiment

In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.

The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.

Embodiment mono-

With reference to figure 1, Fig. 1 is the method flow diagram that between a kind of RRU of providing of the embodiment of the present invention one, joint channel is proofreaied and correct.As shown in Figure 1, the method comprises the following steps:

Step 101, same Remote Radio Unit (Radio Remote Unit, RRU) by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Referring to figs. 2 and 3, Fig. 2 is a kind of wireless access system simplified block diagram that the embodiment of the present invention one provides, Fig. 3 is outer correction RRU schematic diagram, interior correction RRU, proofreaies and correct type RRU and the i.e. outer difference of proofreading and correct type RRU of outer correction RRU is to proofread and correct coupling circuit in RRU or outside RRU, meanwhile, the correction coupling circuit of outer correction RRU can be integrated in antenna.

Single RRU self-correcting is mature technology, and TX represents the transmission channel inside TRX, and RX represents the receive path of TRX the inside, and CTRX represents calibration reference passage, and CRX represents to proofread and correct receipts passage, and CTX represents to proofread and correct a passage.

Self-correcting flow process is tentatively introduced:

Send out correcting process: from TX0, TX1, TX2 ... TX(N-1) transmitting correction reference signal (can be frequency division, time-division and code form one of point is at least launched, as frequency division transmitting, TX0, TX1, TX2 ... TX(N-1) can launch, as there being the concept of subcarrier on frequency domain in ofdm system, as long as TX0 simultaneously, TX1, TX2 ... TX(N-1) take respectively different subcarriers, just can launch simultaneously), all regain from CRX.Adopt frequency division because different TRX transmit, thereby after CRX regains, still can distinguish the signal of different TX transmittings.Now, for TX0, the signal receiving at CRX is:

R=htx0*hcrx*s, s is correction reference signal, and htx0 represents the channel response of TX0, and hcrx represents the channel response of CRX.

Channel estimating obtains:

Temp1=htx0*hcrx

Send out correction coefficient, be namely designated as the β of 0, DL under below _{0, DL}(k), equal 1/Temp1, in like manner obtain β _{i, DL}(k), i ≠ 0, i represents TRXi

Receive correcting process: CTX transmitting, RX0, RX1, RX2 .. receives, and as an example of RX0 example (other similar processing), Temp2=hctx*hrx0*s, receives correction coefficient, the β that namely following table is 0, UL below _{0, UL}(k), equal 1/Temp2, in like manner obtain β _{i, DL}(k), i ≠ 0.

The object of channel correcting:

$\frac{{\mathrm{\&beta;}}_{0,\mathrm{UL}}\left(k\right){\mathrm{<figure-callout\; id="0"\; label="H"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">H</figure-callout>}}_{0,\mathrm{UL}}\left(k\right)}{{\mathrm{\&beta;}}_{0,\mathrm{DL}}\left(k\right){\mathrm{<figure-callout\; id="0"\; label="H"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">H</figure-callout>}}_{0,\mathrm{DL}}\left(k\right)}=\frac{{\mathrm{\&beta;}}_{1,\mathrm{UL}}\left(k\right){\mathrm{<figure-callout\; id="1"\; label="H"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">H</figure-callout>}}_{1,\mathrm{UL}}\left(k\right)}{{\mathrm{\&beta;}}_{1,\mathrm{DL}}\left(k\right){\mathrm{<figure-callout\; id="1"\; label="H"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">H</figure-callout>}}_{1,\mathrm{DL}}\left(k\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{N,\mathrm{UL}}\left(k\right)H_{N-1,\mathrm{UL}}\left(k\right)}{{\mathrm{\&beta;}}_{N,\mathrm{DL}}\left(k\right)H_{N-1,\mathrm{DL}}\left(k\right)}={\mathrm{\&lambda;e}}^{\mathrm{j\&theta;}\left(k\right)}---\left(1\right)$

K above represents the subcarrier number of OFDM symbol the inside.

The channel response of channel response (direct-connected channel) and terminal transceiver channel if do not consider to eat dishes without rice or wine, H (k) only comprises the channel response of base station RRU transceiver channel above:

$\frac{{\mathrm{\&beta;}}_{0,\mathrm{UL}}\left(k\right){\mathrm{<figure-callout\; id="0"\; label="H"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">H</figure-callout>}}_{0,\mathrm{UL}}\left(k\right)}{{\mathrm{\&beta;}}_{0,\mathrm{DL}}\left(k\right){\mathrm{<figure-callout\; id="0"\; label="H"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">H</figure-callout>}}_{0,\mathrm{DL}}\left(k\right)}=\frac{{\mathrm{\&beta;}}_{1,\mathrm{UL}}\left(k\right){\mathrm{<figure-callout\; id="1"\; label="H"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">H</figure-callout>}}_{1,\mathrm{UL}}\left(k\right)}{{\mathrm{\&beta;}}_{1,\mathrm{DL}}\left(k\right){\mathrm{<figure-callout\; id="1"\; label="H"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">H</figure-callout>}}_{1,\mathrm{DL}}\left(k\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{N,\mathrm{UL}}\left(k\right)H_{N-1,\mathrm{UL}}\left(k\right)}{{\mathrm{\&beta;}}_{N,\mathrm{DL}}\left(k\right)H_{N-1,\mathrm{DL}}\left(k\right)}={\mathrm{\&lambda;e}}^{\mathrm{j\&theta;}\left(k\right)}$

$\&DoubleRightArrow;$

$\frac{\frac{1}{h_{\mathrm{rx},0}\&CenterDot;h_{\mathrm{ctx}}}{h}_{\mathrm{rx},0}}{\frac{1}{h_{\mathrm{tx},0}\&CenterDot;h_{\mathrm{crx}}}{h}_{\mathrm{tx},0}}=\frac{\frac{1}{h_{\mathrm{rx},1}\&CenterDot;h_{\mathrm{ctx}}}{h}_{\mathrm{rx},1}}{\frac{1}{h_{\mathrm{tx},1}\&CenterDot;h_{\mathrm{crx}}}{h}_{\mathrm{tx},1}}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{\frac{1}{h_{\mathrm{rx},N-1}\&CenterDot;h_{\mathrm{ctx}}}{h}_{\mathrm{rx},N-1}}{\frac{1}{h_{\mathrm{tx},N-1}\&CenterDot;h_{\mathrm{crx}}}{h}_{\mathrm{tx},N-1}}{\mathrm{\&lambda;e}}^{\mathrm{j\&theta;}\left(k\right)}$

$\&DoubleRightArrow;$

$\frac{h_{\mathrm{crx}}}{h_{\mathrm{ctx}}}=\frac{h_{\mathrm{crx}}}{h_{\mathrm{ctx}}}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{h_{\mathrm{crx}}}{h_{\mathrm{ctx}}}={\mathrm{\&lambda;e}}^{\mathrm{j\&theta;}\left(k\right)}---\left(2\right)$

Wherein, β _{i, UL}(k) for receiving channel compensation coefficient, β _{i, DL}(k) for sending out channel compensation coefficient, H _{i, UL}(k) the up channel response of expression base band side, H _{i, DL}(k) downlink channel response of expression end side, λ e ^{j θ (k)}for the residual channel response of relative correction, k is subcarrier number.H _crxrepresent to proofread and correct the channel response of receiving passage, h _ctxrepresent to send out the channel response of proofreading and correct a passage.

Can find out from formula the object that channel correcting is final, equivalent channel response (channel response after the rectification building-out) ratio of all business transceiver channels is constant.

Consider channel matrix H and λ e ^{j θ}the characteristic vector of H is identical, and residual channel response does not affect channel characteristics.Proofread and correct and reach formula for single base station, but for multiple base stations, due to

i represents to be numbered the RRU of i, is denoted as RRUi, and j represents to be numbered the RRU of j, is designated as RRUj, carries out coherent transmitting and brings impact multiple RRU are collaborative.

Step 102, described RRU carries out two joint channel corrections between RRU by revealing cable;

The present invention is except adopting leakage cable to carry out, two joint channel corrections between RRU, can also adopting transmission medium to be used for two joint channel between RRU and proofreading and correct.The reference signal that described transmission medium is proofreaied and correct for transmission channel.

Wherein, the reference signal of described channel correcting can be the root sequence of public reference signal CRS or the root sequence of detection reference signal SRS.Described transmission medium includes but not limited to antenna, reveals cable.

In this step, the joint channel correction of being undertaken between RRU by leakage cable between described different RRUs is specially:

To described outer correction RRU, because adopting radio frequency cable (be designated as and proofread and correct radio frequency cable), calibration reference passage and coupling disc or correction coupling function module be connected, as can be seen from Figure 4, described correction radio frequency cable is replaced by and reveals cable (be designated as the first correction and reveal cable), and the joint channel of carrying out between RRU is proofreaied and correct;

Concrete, the joint channel correction of carrying out between outer correction RRU is specially:

Between the different outer RRU of correction, utilize the first correction to reveal cable and carry out radio communication, taking 2 outer RRU that proofread and correct as example, RRU1 is by between the first correction leakage cable transmitting RRU, correction reference signal is to RRU0, and RRU0 utilizes correction reference signal between the RRU receiving upgrade the receipts correction coefficient of RRU0 or send out correction coefficient.RRU0 is by between the first correction leakage cable transmitting RRU, correction reference signal is to RRU1, and RRU1 utilizes correction reference signal between the RRU receiving upgrade the receipts correction coefficient of RRU1 or send out correction coefficient.

The first step, as shown in Figure 4, RRU0 and RRU1 complete respectively self-correcting;

After RRU0 and RRU1 self-correcting complete, obtain separately its self-correcting coefficient, self-correcting coefficient comprises that again business sends out channel correcting coefficient, is called for short to send out correction coefficient and business is received channel correcting coefficient, is called for short and receives correction coefficient, wherein receives correction coefficient

can be expressed as:

${\mathrm{\&beta;}}_{k,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_k^{\mathrm{ct}}\left(n\right)h_{k,i}^r\left(n\right)},$ k=0,1

Receipts correction coefficient when k=0 is:

Receipts correction coefficient when k=1 is:

Wherein, k represents to be numbered the RRU of k, is designated as RRUk, and in the present embodiment, k represents RRU0 at 0 o'clock, and k represents RRU1 at 1 o'clock; N represents n subcarrier, n=1, and 2 ... N, N represents subcarrier number; I represents business receipts passage i,

the channel response of passage on n subcarrier sent out in the correction that represents RRUk;

the business that represents RRUk is received the channel response of passage i on n subcarrier.

Sending out correction coefficient can be expressed as:

${\mathrm{\&beta;}}_{k,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_k^{\mathrm{cr}}\left(n\right)h_{k,i}^t\left(n\right)},$ k=0,1

The correction coefficient of sending out when k=0 is:

The correction coefficient of sending out when k=1 is:

Wherein, k represents to be numbered the RRU of k, is designated as RRUk, and in the present embodiment, k represents RRU0 at 0 o'clock, and k represents RRU1 at 1 o'clock; N represents n subcarrier, n=1,2 ...., N, i represents that i is sent out passage,

the channel response of passage on n subcarrier received in the correction that represents RRUk;

represent the business of RRUk send out passage i on n subcarrier channel response.

RRU0 completes after self-correcting and can represent with formula below:

$\frac{{\mathrm{\&beta;}}_{0,0}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{0,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\mathrm{\&beta;}}_{\mathrm{0,1}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{0,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\&beta;}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)},$ Wherein N _aNTrepresent the antenna number of RRU.

RRU1 completes after self-correcting and can represent with formula below:

$\frac{{\mathrm{\&beta;}}_{1,0}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,0}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{1,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\mathrm{\&beta;}}_{1,1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,1}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{1,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\&beta;}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{cr}}\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)}$

It should be noted that, be to have same antenna number to be described as example taking RRU0 and RRU1 here, and the method is equally applicable to the RRU of any antenna number.

Optionally, transmit-receive combination correction coefficient is expressed as the ratio of sending out correction coefficient and receiving correction coefficient:

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

Use transmit-receive combination correction coefficient, RRU0 completes after self-correcting and can represent with formula below:

$\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{0,0}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^r\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{0,1}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^r\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\widetilde{\mathrm{\&beta;}}}_{0,N_{\mathrm{ANT}}-1}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{er}}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

Use transmit-receive combination correction coefficient, RRU1 completes after self-correcting and can represent with formula below:

$\frac{{\widetilde{\mathrm{\&beta;}}}_{1,0}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,0}^r\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{1,1}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^r\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\widetilde{\mathrm{\&beta;}}}_{1,N_{\mathrm{ANT}}-1}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{er}}\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)}$

Can find out, RRU0 and RRU1 complete after self-correcting separately, send out correction coefficient and make each passage up-downgoing ratio of RRU0 and RRU1 inside identical with receipts correction coefficient.But the ratio between RRU0 and RRU1 is not identical.

Second step, signal transmitting between RRU;

Correction interface between coupling disc and RRU adopts leakage cable to be connected, and between RRU0 and RRU1, can carry out radio communication.

RRU1 is by revealing cable to RRU0 s emission signal s (n), n=1,2 ...., N, transmitting can be various training sequences or the reference signal sequence adopting in LTE and WiMAX system.

Do not consider after Noise and Interference, RRU0 reveals calibration reference passage corresponding to cable and at the reception signal of n subcarrier is:

$r_0\left(n\right)={\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{Air},01}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)\&CenterDot;s\left(n\right)$ n=1,2....,N

Wherein h _{air, 01}(n) be the channel response of eating dishes without rice or wine, represent to reveal cable transmitting from RRU1, RRU0 reveals the channel response of eating dishes without rice or wine that cable receives, for TDD (Time Division Duplexing) system, uplink and downlink eat dishes without rice or wine channel response equate, thereby specially do not identify DL (descending, Downlink) or UL(up, Uplink), there is h _{air, 01}(n)=h _{air, 10}(n).

The Base Band Unit that RRU0 is corresponding carries out channel estimating by known reference sequences S, and the channel response that the individual sub-carrier estimation of n goes out is:

${\mathrm{\&gamma;}}_0\left(n\right)={\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{Air},01}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)$

RRU0 is by revealing cable to RRU1 s emission signal s (n), n=1,2 ...., N, does not consider after Noise and Interference, RRU1 reveals reference correction channel corresponding to cable and at the reception signal of n subcarrier is:

$r_1\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{Air},01}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)\&CenterDot;s\left(n\right)$ n=1,2….,N

The Base Band Unit that RRU1 is corresponding carries out channel estimating by known reference sequences S, and the channel response that the individual sub-carrier estimation of n goes out is:

${\mathrm{\&gamma;}}_1\left(n\right)={\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{Air},01}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)$

The 3rd step, RRU0 and RRU1 upgrade correction coefficient.

RRU0 upgrades and receives correction coefficient, has:

${\widetilde{\mathrm{\&beta;}}}_{0,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{0,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&gamma;}}_0}=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^r\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)\&CenterDot;h_{\mathrm{Air},01}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)}$

${\widetilde{\mathrm{\&beta;}}}_{0,i}^{\mathrm{DL}}\left(n\right)={\mathrm{\&beta;}}_{0,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^t\left(n\right)}$

As optional, more new correction coefficient, has:

${\widetilde{\mathrm{\&beta;}}}_{0,i}^{\mathrm{UL}}\left(n\right)={\mathrm{\&beta;}}_{0,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^r\left(n\right)}$

${\widetilde{\mathrm{\&beta;}}}_{0,i}^{\mathrm{DL}}\left(n\right)={\mathrm{\&beta;}}_{0,i}^{\mathrm{DL}}\left(n\right)\&CenterDot;{\mathrm{\&gamma;}}_0=\frac{h_{\mathrm{Air},01}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^t\left(n\right)}$

As optional, upgrade transmit-receive combination correction coefficient, have:

${\widetilde{\mathrm{\&beta;}}}_{0,i}\left(n\right)=\frac{{\mathrm{\&beta;}}_{0,i}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^t\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^r\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)}$

After adopting the transmitting-receiving correction coefficient compensation after upgrading, have:

$\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{0,0}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^r\left(n\right)}{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{0,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{0,1}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^r\left(n\right)}{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{0,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\widetilde{\mathrm{\&beta;}}}_{{0,N}_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\widetilde{\mathrm{\&beta;}}}_{{0,N}_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{{0,N}_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)h_{\mathrm{Air},01}{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)}$ Or

$\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{0,0}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^r\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{0,1}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^r\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\widetilde{\mathrm{\&beta;}}}_{0,N_{\mathrm{ANT}}-1}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{{0,N}_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)}$

RRU1 upgrades and receives correction coefficient, has:

${\widetilde{\mathrm{\&beta;}}}_{1,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{1,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&gamma;}}_1}=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^r\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{cr}}\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

${\widetilde{\mathrm{\&beta;}}}_{1,i}^{\mathrm{DL}}\left(n\right)\text{=}{\mathrm{\&beta;}}_{1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{cr}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^t\left(n\right)}$

As optional, more new correction coefficient, has:

${\widetilde{\mathrm{\&beta;}}}_{1,i}^{\mathrm{UL}}\left(n\right)={\mathrm{\&beta;}}_{1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^r\left(n\right)}$

${\widetilde{\mathrm{\&beta;}}}_{1,i}^{\mathrm{DL}}\left(n\right)={\mathrm{\&beta;}}_{1,i}^{\mathrm{DL}}\left(n\right)\&CenterDot;{\mathrm{\&gamma;}}_1=\frac{h_{\mathrm{Air},01}\left(n\right)\&CenterDot;{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^t\left(n\right)}$

As optional, upgrade transmit-receive combination correction coefficient, have:

${\widetilde{\mathrm{\&beta;}}}_{1,i}\left(n\right)=\frac{{\mathrm{\&beta;}}_{1,i}\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{cr}}\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^t\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^r\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

After adopting the transmitting-receiving correction coefficient compensation after upgrading, have:

$\frac{{\widetilde{\mathrm{\&beta;}}}_{1,0}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,0}}^r\left(n\right)}{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{1,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{1,1}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^r\left(n\right)}{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{1,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\widetilde{\mathrm{\&beta;}}}_{{1,N}_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\widetilde{\mathrm{\&beta;}}}_{{1,N}_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{{1,N}_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)h_{\mathrm{Air},01}{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$ Or

$\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{1,0}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,0}}^r\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\&beta;}}}_{\mathrm{1,1}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^r\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\widetilde{\mathrm{\&beta;}}}_{1,N_{\mathrm{ANT}}-1}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{{0,N}_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{1}{{\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_1^{\mathrm{ct}}\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

Flow process is equally applicable to the scene of the many RRU in single community splicing above, as 2 4T4R (representing that RRU is 4 transmission channels and 4 receive paths) are spliced into the community of 8T8R.

Step 103, regards two RRU after proofreading and correct as an overall RRU, carries out joint channel correction by revealing cable with the 3rd RRU; Regard three RRU after proofreading and correct as an overall RRU, carry out joint channel correction by revealing cable with the 4th RRU, the rest may be inferred, completes the joint channel correction between different RRUs by revealing cable.

Can be preferred, with reference to figure 5, proofread and correct leakage circuit and can adopt two kinds of modes in Fig. 5 to carry out joint channel correction between RRU.Revealing mouth can be arranged in correction coupling disc or be arranged in RRU.

The embodiment of the present invention provides a kind of method that between RRU, joint channel is proofreaied and correct, described method is by revealing cable, and adopt the outer type of proofreading and correct to carry out the joint channel correction between different RRUs, make described correction coefficient of different RRUs be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical, solve the problem of channel correcting between multiple communities, to meet the requirement of JT to passage reciprocity.

Embodiment bis-

With reference to figure 6, Fig. 6 is the method flow diagram that the joint channel between a kind of RRU of providing of the embodiment of the present invention two is proofreaied and correct.As shown in Figure 6, described method comprises the steps:

Step 601, chooses the reference RRU that any one RRU in described different RRUs proofreaies and correct as joint channel;

Concrete, between multiple RRU, choose the calibration reference passage of some RRU as a reference, the correction signal of all RRU is all launched or receives from the calibration reference passage of the RRU of this selection, supposes and selects the calibration reference passage of RRU0 as N Reference Alignment.Reference channel is with reference to shown in figure 4, and different RRUs is chosen the reference RRU that RRU0 proofreaies and correct as joint channel, and all RRU carry out joint channel correction by described RRU0.

Step 602, described different RRUs is done joint channel correction by revealing cable with described any one RRU choosing.

Concrete, shown in Fig. 4, the first step, RRU0 and RRU1 receive correction factor calculation.

RRU0 is by calibration reference passage transmitting correction signal s (n), and RRU0 receives by service channel, and RRU1 receives by N Reference Alignment reference channel leakage cable and reveals the wireless signal of coming, and receives via service channel.For RRU0, signal flow is: E0-->T0-->D0--GreatT.GreaT.G TB0-->A0; For RRU1, signal flow is: E0-->T0-->T1--GreatT.GreaT.G TD1-->B1-->A1.

The reception correction coefficient of RRU0 is:

${\mathrm{\&beta;}}_{0,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^r\left(n\right)}$

The reception correction coefficient of RRU1 is:

${\mathrm{\&beta;}}_{1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^r\left(n\right)}$

Second step, a correction factor calculation of RRU0 and RRU1.

In the first moment, RRU0 adopts frequency division mode, and A0-->B0-->D0--GreatT.GreaT.G TT0-->E0 launches correction signal on all service channels simultaneously, and sending out correction coefficient has:

${\mathrm{\&beta;}}_{0,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^t\left(n\right)}$

The second moment, RRU1 adopts frequency division mode, A1-->B1-->D1--GreatT.GreaT.G TT1-->T0-->E0 launches correction signal on all service channels simultaneously, and sending out correction coefficient has:

${\mathrm{\&beta;}}_{1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^t\left(n\right)}$

Or RRU0 and RRU1 adopt frequency division mode to launch correction signal on all service channels of RRU0 and RRU1 simultaneously, obtain and an identical above correction coefficient.

Adopt after correction coefficient compensation, have for RRU0:

$\frac{{\mathrm{\&beta;}}_{\mathrm{0,0}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{0,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\mathrm{\&beta;}}_{\mathrm{0,1}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{0,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{{0,N}_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{{0,N}_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\&beta;}}_{{0,N}_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{{0,N}_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

Adopt after correction coefficient compensation, have for RRU1:

$\frac{{\mathrm{\&beta;}}_{1,0}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,0}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{1,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\mathrm{\&beta;}}_{1,1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,1}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{1,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\&beta;}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

Obviously, the result on RRU0 and RRU1 equation the right equates, reaches the object that RRU0 and RRU1 joint channel are proofreaied and correct.The joint channel that this scheme can expand between any number of RRU is proofreaied and correct, as long as ensure that correction signal is is finally all transmitted and received by the calibration reference passage of certain RRU.In order to reach the object of correction signal leakage, also can adopt the novel RRU structure of Fig. 5.

The embodiment of the present invention provides a kind of method that between RRU, joint channel is proofreaied and correct, described method is by revealing cable, and adopt the outer type of proofreading and correct to carry out the joint channel correction between different RRUs, make described correction coefficient of different RRUs be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical, solve the problem of channel correcting between multiple communities, to meet the requirement of JT to passage reciprocity.

Embodiment tri-

With reference to figure 7, Fig. 7 is the method schematic diagram that between a kind of inside and outside RRU that proofreaies and correct type that provides of the embodiment of the present invention three, joint channel is proofreaied and correct.

For the joint channel completing between multiple interior correction RRU is proofreaied and correct, the radio frequency cable that replacing RRU root service channel is connected with antenna is for revealing cable (be designated as the second correction and reveal cable), and the joint channel of carrying out between RRU is proofreaied and correct; With reference to figure 8, between RRU, correcting process has:

The first step: identical with the step 101 in embodiment mono-, RRU0 and RRU1 complete correction separately;

Receive correction coefficient

can be expressed as:

${\mathrm{\&beta;}}_{k,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_k^{\mathrm{ct}}\left(n\right)h_{k,i}^r\left(n\right)},$ k=0,1

Sending out correction coefficient can be expressed as:

${\mathrm{\&beta;}}_{k,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_k^{\mathrm{cr}}\left(n\right)h_{k,i}^t\left(n\right)},$ k=0,1

Can be preferred, adopt relative correction (taking the correction coefficient of first service channel as with reference to), the coefficient of RRU0 and RRU1 is:

${\widetilde{\mathrm{\&beta;}}}_{k,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{k,0}^{\mathrm{UL}}\left(n\right)}=\frac{h_{k,0}^r\left(n\right)}{h_{k,i}^r\left(n\right)}$ k=0,1

${\widetilde{\mathrm{\&beta;}}}_{k,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{k,0}^{\mathrm{DL}}\left(n\right)}=\frac{h_{k,0}^t\left(n\right)}{h_{k,i}^t\left(n\right)},$ k=0,1

Second of second step: RRU0 proofreaies and correct correction signal s (n) between leakage cable (second proofreaies and correct leakage cable for changing in first step relative correction with reference to service channel correspondence radio frequency cable) transmitting RRU and proofreaies and correct and reveal cable to second of RRU1, obtains receiving reception signal r ₁(n), second of RRU1 proofreaies and correct correction signal s (n) between leakage cable (second proofreaies and correct leakage cable for changing in first step relative correction with reference to service channel correspondence radio frequency cable) transmitting RRU and proofreaies and correct and reveal cable to second of RRU0, obtains receiving signal r ₀(n), utilize r ₀and r (n) ₁(n) channel estimating obtains γ ₀and γ (n) ₁(n), γ ₀and γ (n) ₁(n) represent channel response value.

The 3rd step: upgrade the RRU0 and the RRU1 relative correction coefficient that obtain in the first step, the correction coefficient of sending out of RRU0 and RRU1 is multiplied by respectively γ ₀and γ (n) ₁(n), keep receiving correction coefficient constant; Or the receipts correction coefficient of RRU0 and RRU1 is respectively divided by γ ₀and γ (n) ₁(n), keep sending out correction coefficient constant; Or the transmit-receive combination correction coefficient of RRU0 and RRU1 is respectively divided by γ ₀and γ (n) ₁(n).

For expanding to more RRU scenes, if selected relative correction, and select as the passage 0 of RRU0 be reference data, other RRU, as long as carry out RRU0 and RRU1 trimming process above with RRU0, can complete between many RRU joint channel correction.If do not select relative correction, after RRU0 and RRU1 joint channel have been proofreaied and correct, as a virtual RRU, continuation and remaining RRU proofread and correct and can expand to joint channel correction between more RRU.

The embodiment of the present invention provides a kind of method that between RRU, joint channel is proofreaied and correct, described method is by revealing cable, and in adopting, proofread and correct type and carry out the joint channel correction between different RRUs, make described correction coefficient of different RRUs be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical, solve the problem of channel correcting between multiple communities, to meet the requirement of JT to passage reciprocity.

Embodiment tetra-

With reference to figure 8, Fig. 8 is the method schematic diagram that between a kind of inside and outside RRU that proofreaies and correct type that provides of the embodiment of the present invention four, joint channel is proofreaied and correct.

For the joint channel completing between multiple interior correction RRU is proofreaied and correct, the radio frequency cable that replacing RRU root service channel is connected with antenna is for revealing cable (be designated as the second correction and reveal cable), and the joint channel of carrying out between RRU is proofreaied and correct; With reference to figure 8, between RRU, correcting process has:

The first step: identical with the step 201 in embodiment bis-, choose the reference RRU that any one RRU in described different RRUs proofreaies and correct as joint channel;

Concrete, between multiple RRU, choose the calibration reference passage of some RRU as a reference, the correction signal of all RRU is all launched or receives from the calibration reference passage of the RRU of this selection, supposes that selecting the calibration reference passage of RRU0 is that leakage cable that T0 is corresponding is as N Reference Alignment.Reference channel is with reference to shown in figure 8, and different RRUs is chosen the reference RRU that RRU0 proofreaies and correct as joint channel, and all RRU carry out joint channel correction by described RRU0.

Second step, obtains the reception correction parameter of RRU0 and the reception correction parameter of RRU1;

The reception correction coefficient of RRU0 is:

${\mathrm{\&beta;}}_{0,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^{\mathrm{air}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^r\left(n\right)}$

Wherein

represent that calibration reference passage T0 reveals mouthful and the channel response of eating dishes without rice or wine of the antenna i of RRUk.

The reception correction coefficient of RRU1 is:

${\mathrm{\&beta;}}_{1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^{\mathrm{air}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^r\left(n\right)}$

The 3rd step: the correction parameter of sending out of sending out correction parameter and RRU1 that obtains RRU0;

${\mathrm{\&beta;}}_{0,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^{\mathrm{air}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^t\left(n\right)}$

${\mathrm{\&beta;}}_{1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^{\mathrm{air}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^t\left(n\right)}$

Or RRU0 and RRU1 adopt frequency division mode to launch correction signal on all service channels of RRU0 and RRU1 simultaneously, obtain and an identical above correction coefficient.

Adopt after correction coefficient compensation, have for RRU0:

$\frac{{\mathrm{\&beta;}}_{0,0}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{0,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\mathrm{\&beta;}}_{\mathrm{0,1}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{0,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\&beta;}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

Adopt after correction coefficient compensation, have for RRU1:

$\frac{{\mathrm{\&beta;}}_{1,0}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,0}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{1,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\mathrm{\&beta;}}_{1,1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,1}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{1,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\&beta;}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

Obviously, the result on RRU0 and RRU1 equation the right equates, reaches the object that RRU0 and RRU1 joint channel are proofreaied and correct.The joint channel that this scheme can expand between any number of RRU is proofreaied and correct, as long as ensure that correction signal is finally all received by the calibration reference passage of certain RRU.

The embodiment of the present invention provides a kind of method that between RRU, joint channel is proofreaied and correct, described method is by revealing cable, and in adopting, proofread and correct type and carry out the joint channel correction between different RRUs, make described correction coefficient of different RRUs be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical, solve the problem of channel correcting between multiple communities, to meet the requirement of JT to passage reciprocity.

Embodiment five

With reference to figure 9, Fig. 9 is the equipment structure chart that between a kind of RRU of providing of the embodiment of the present invention five, joint channel is proofreaied and correct, and as shown in Figure 9, described equipment comprises as lower unit:

The first joint channel correcting unit 901, described the first joint channel correcting unit 901 comprises as lower unit: self-correcting unit 902, joint channel correcting unit 903, the first associated units 904, the second associated units 905, described self-correcting unit 902 is for carrying out the step 101 of embodiment mono-Fig. 1, and joint channel correcting unit 903 is for carrying out the step 102 of embodiment mono-Fig. 1, and the first associated units 904 and the second associated units 905 are for carrying out the step 103 of embodiment mono-Fig. 1.

One of ordinary skill in the art will appreciate that and just divide according to function logic for the terminal equipment in the described embodiment of the present invention five included unit, but be not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also, just for the ease of mutual differentiation, is not limited to the application's protection range.

Self-correcting unit 902, be used for same RRU by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Joint channel correcting unit 903, carries out two joint channel corrections between RRU for described RRU by revealing cable;

The first associated units 904 and the second associated units 905, for regarding two RRU after proofreading and correct as an overall RRU, carry out joint channel correction by revealing cable with the 3rd RRU; Regard three RRU after proofreading and correct as an overall RRU, carry out joint channel correction by revealing cable with the 4th RRU, the rest may be inferred, completes the joint channel correction between different RRUs by revealing cable.

Can be preferred, with reference to figure 5, proofread and correct leakage circuit and can adopt two kinds of modes in Fig. 5 to carry out joint channel correction between RRU.Revealing mouth can be arranged in correction coupling disc or be arranged in single RRU.

Described equipment also comprises processing unit, described processing unit specifically for:

The joint channel of being undertaken between different RRUs by transmission medium is proofreaied and correct, the reference signal that described transmission medium is proofreaied and correct for transmission channel.

Wherein, the reference signal of described channel correcting can be the root sequence of public reference signal CRS or the root sequence of detection reference signal SRS.Described transmission medium includes but not limited to antenna, reveals cable.

The embodiment of the present invention provides the equipment that between a kind of RRU, joint channel is proofreaied and correct, described equipment is by revealing cable, and adopt the outer type of proofreading and correct to carry out the joint channel correction between different RRUs, make described correction coefficient of different RRUs be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical, solve the problem of channel correcting between multiple communities, to meet the requirement of JT to passage reciprocity.

Embodiment six

With reference to Figure 10, Figure 10 is the equipment structure chart that between a kind of RRU of providing of the embodiment of the present invention six, joint channel is proofreaied and correct.As shown in figure 10, described equipment comprises as lower unit:

The first joint channel correcting unit 1001, described the first joint channel correcting unit 1001 comprises as lower unit: selected cell 1002, the three associated units 1003; Described selected cell 1002 is for carrying out the step 601 of embodiment bis-Fig. 6, and described the 3rd associated units 1003 is for carrying out the step 602 of embodiment bis-Fig. 6.One of ordinary skill in the art will appreciate that and just divide according to function logic for the terminal equipment in the described embodiment of the present invention five included unit, but be not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also, just for the ease of mutual differentiation, is not limited to the application's protection range.

Selected cell 1002, the reference RRU proofreading and correct as joint channel for choosing any one RRU of described different RRUs;

Concrete, between multiple RRU, choose the calibration reference passage of some RRU as a reference, the correction signal of all RRU is all launched or receives from the calibration reference passage of the RRU of this selection, supposes and selects the calibration reference passage of RRU0 as N Reference Alignment.Reference channel is with reference to shown in figure 4, and different RRUs is chosen the reference RRU that RRU0 proofreaies and correct as joint channel, and all RRU carry out joint channel correction by described RRU0.

The 3rd associated units 1003, does joint channel correction by revealing cable with described any one RRU choosing for described different RRUs.

In order to reach the object of correction signal leakage, also can adopt the novel RRU structure of Fig. 5.

Described equipment also comprises processing unit, described processing unit specifically for:

The joint channel of being undertaken between different RRUs by transmission medium is proofreaied and correct, the reference signal that described transmission medium is proofreaied and correct for transmission channel.

Wherein, the reference signal of described channel correcting can be the root sequence of public reference signal CRS or the root sequence of detection reference signal SRS.Described transmission medium includes but not limited to antenna, reveals cable.

The embodiment of the present invention provides the equipment that between a kind of RRU, joint channel is proofreaied and correct, described equipment is by revealing cable, and adopt the outer type of proofreading and correct to carry out the joint channel correction between different RRUs, make described correction coefficient of different RRUs be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical, solve the problem of channel correcting between multiple communities, to meet the requirement of JT to passage reciprocity.

Embodiment seven

With reference to Figure 11, Figure 11 is the equipment structure chart that between a kind of RRU of providing of the embodiment of the present invention seven, joint channel is proofreaied and correct, and described equipment comprises the first joint channel correcting unit 1101, and described equipment also comprises the second associating correcting unit 1102.Described the second associating correcting unit 1102 is for carrying out the step first step to the three steps of embodiment tri-.

One of ordinary skill in the art will appreciate that and just divide according to function logic for the terminal equipment in the described embodiment of the present invention five included unit, but be not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also, just for the ease of mutual differentiation, is not limited to the application's protection range.

For the joint channel completing between multiple interior correction RRU is proofreaied and correct, the radio frequency cable that replacing RRU root service channel is connected with antenna is for revealing cable (be designated as the second correction and reveal cable), and the joint channel of carrying out between RRU is proofreaied and correct; With reference to figure 8, between RRU, correcting process has:

The first step: identical with the step 101 in embodiment mono-, RRU0 and RRU1 complete correction separately;

Receive correction coefficient

can be expressed as:

${\mathrm{\&beta;}}_{k,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{h_k^{\mathrm{ct}}\left(n\right)h_{k,i}^r\left(n\right)},$ k=0,1

Sending out correction coefficient can be expressed as:

${\mathrm{\&beta;}}_{k,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_k^{\mathrm{cr}}\left(n\right)h_{k,i}^t\left(n\right)},$ k=0,1

Adopt relative correction (taking the correction coefficient of first service channel as with reference to), the coefficient of RRU0 and RRU1 is:

${\widetilde{\mathrm{\&beta;}}}_{k,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\&beta;}}_{k,0}^{\mathrm{UL}}\left(n\right)}=\frac{h_{k,0}^r\left(n\right)}{h_{k,i}^r\left(n\right)},$ k=0,1

${\widetilde{\mathrm{\&beta;}}}_{k,i}^{\mathrm{DL}}\left(n\right)=\frac{{\mathrm{\&beta;}}_{k,i}^{\mathrm{DL}}\left(n\right)}{{\mathrm{\&beta;}}_{k,0}^{\mathrm{DL}}\left(n\right)}=\frac{h_{k,0}^t\left(n\right)}{h_{k,i}^t\left(n\right)},$ k=0,1

Second of second step: RRU0 proofreaies and correct correction signal s (n) between leakage cable (second proofreaies and correct leakage cable for changing in first step relative correction with reference to service channel correspondence radio frequency cable) transmitting RRU and proofreaies and correct and reveal cable to second of RRU1, obtains receiving reception signal r ₁(n), second of RRU1 proofreaies and correct correction signal s (n) between leakage cable (second proofreaies and correct leakage cable for changing in first step relative correction with reference to service channel correspondence radio frequency cable) transmitting RRU and proofreaies and correct and reveal cable to second of RRU0, obtains receiving signal r ₀(n), utilize r ₀and r (n) ₁(n) channel estimating obtains γ ₀and γ (n) ₁(n), γ ₀and γ (n) ₁(n) represent channel response value.

The 3rd step: upgrade the RRU0 and the RRU1 relative correction coefficient that obtain in the first step, the correction coefficient of sending out of RRU0 and RRU1 is multiplied by respectively γ ₀and γ (n) ₁(n), keep receiving correction coefficient constant; Or the receipts correction coefficient of RRU0 and RRU1 is respectively divided by γ ₀and γ (n) ₁(n), keep sending out correction coefficient constant; Or the transmit-receive combination correction coefficient of RRU0 and RRU1 is respectively divided by γ ₀and γ (n) ₁(n).

The embodiment of the present invention provides the equipment that between a kind of RRU, joint channel is proofreaied and correct, described equipment is by revealing cable, and in adopting, proofread and correct type and carry out the joint channel correction between different RRUs, make described correction coefficient of different RRUs be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical, solve the problem of channel correcting between multiple communities, to meet the requirement of JT to passage reciprocity.

Embodiment eight

With reference to Figure 12, Figure 12 is the equipment structure chart that between a kind of RRU of providing of the embodiment of the present invention eight, joint channel is proofreaied and correct, and described equipment comprises the first joint channel correcting unit 1201, and the described network equipment also comprises the second associating correcting unit 1202.Described the second associating correcting unit 1202 is for carrying out the step first step to the three steps of embodiment tetra-.

One of ordinary skill in the art will appreciate that and just divide according to function logic for the terminal equipment in the described embodiment of the present invention five included unit, but be not limited to above-mentioned division, as long as can realize corresponding function; In addition, the concrete title of each functional unit also, just for the ease of mutual differentiation, is not limited to the application's protection range.

For the joint channel completing between multiple interior correction RRU is proofreaied and correct, the radio frequency cable that replacing RRU root service channel is connected with antenna is for revealing cable (be designated as the second correction and reveal cable), and the joint channel of carrying out between RRU is proofreaied and correct; With reference to figure 8, between RRU, correcting process has:

The first step: identical with the step 201 in embodiment bis-, choose the reference RRU that any one RRU in described different RRUs proofreaies and correct as joint channel;

Concrete, between multiple RRU, choose the calibration reference passage of some RRU as a reference, the correction signal of all RRU is all launched or receives from the calibration reference passage of the RRU of this selection, supposes and selects the calibration reference passage of RRU0 as N Reference Alignment.Reference channel is with reference to shown in figure 8, and different RRUs is chosen the reference RRU that RRU0 proofreaies and correct as joint channel, and all RRU carry out joint channel correction by described RRU0.

Second step, obtains the reception correction parameter of RRU0 and the reception correction parameter of RRU1;

The reception correction coefficient of RRU0 is:

${\mathrm{\&beta;}}_{0,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^r\left(n\right)}$

The reception correction coefficient of RRU1 is:

${\mathrm{\&beta;}}_{1,i}^{\mathrm{UL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^r\left(n\right)}$

The 3rd step: the correction parameter of sending out of sending out correction parameter and RRU1 that obtains RRU0;

${\mathrm{\&beta;}}_{0,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,i}^t\left(n\right)}$

${\mathrm{\&beta;}}_{1,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)h_{\mathrm{Air},01}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,i}^t\left(n\right)}$

Or RRU0 and RRU1 adopt frequency division mode to launch correction signal on all service channels of RRU0 and RRU1 simultaneously, obtain and an identical above correction coefficient.

Adopt after correction coefficient compensation, have for RRU0:

$\frac{{\mathrm{\&beta;}}_{0,0}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{0,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\mathrm{\&beta;}}_{\mathrm{0,1}}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{0,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{0,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\&beta;}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_{0,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

Adopt after correction coefficient compensation, have for RRU1:

$\frac{{\mathrm{\&beta;}}_{1,0}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,0}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{1,0}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\mathrm{\&beta;}}_{1,1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,1}^r\left(n\right)}{{\mathrm{\&beta;}}_{\mathrm{1,1}}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{\mathrm{1,1}}^t\left(n\right)}=\&CenterDot;\&CenterDot;\&CenterDot;=\frac{{\mathrm{\&beta;}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\&beta;}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right){\mathrm{<figure-callout\; id="1"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000022.png,DEST\_PATH\_HDA0000454488820000042.png"\; state="\{\{state\}\}">h</figure-callout>}}_{1,N_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{cr}}\left(n\right)}{{\mathrm{<figure-callout\; id="0"\; label="h"\; filenames="DEST\_PATH\_HDA0000454488820000042.png,HDA00003165402900021.png"\; state="\{\{state\}\}">h</figure-callout>}}_0^{\mathrm{ct}}\left(n\right)}$

Obviously, the result on RRU0 and RRU1 equation the right equates, reaches the object that RRU0 and RRU1 joint channel are proofreaied and correct.The joint channel that this scheme can expand between any number of RRU is proofreaied and correct, as long as ensure that correction signal is finally all received by the calibration reference passage of certain RRU.

The embodiment of the present invention provides the equipment that between a kind of RRU, joint channel is proofreaied and correct, described equipment is by revealing cable, and in adopting, proofread and correct type and carry out the joint channel correction between different RRUs, make described correction coefficient of different RRUs be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical, solve the problem of channel correcting between multiple communities, to meet the requirement of JT to passage reciprocity.

Embodiment nine

With reference to Figure 13, Figure 13 is the structure drawing of device of a kind of network equipment of providing of the embodiment of the present invention nine.With reference to Figure 13, Fig. 3 is a kind of network equipment 1200 that the embodiment of the present invention provides, and the specific embodiment of the invention does not limit the specific implementation of the described network equipment.Described equipment 1300 comprises:

Processor (processor) 1301, communication interface (Communications Interface) 1302, memory (memory) 1303, bus 1304.

Processor 1301, communication interface 1302, memory 1303 completes mutual communication by bus 1304.

Communication interface 1302, for communicating with other network equipments;

Processor 1301, for executive program A.

Particularly, program A can comprise program code, and described program code comprises computer-managed instruction.

Processor 1301 may be a central processor CPU, or specific integrated circuit ASIC(Application Specific Integrated Circuit), or be configured to implement one or more integrated circuits of the embodiment of the present invention.

Memory 1303, for depositing program A.Memory 1303 may comprise high-speed RAM memory, also may also comprise nonvolatile memory (non-volatile memory).Program A specifically can comprise:

Self-correcting unit 902, be used for same RRU by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Joint channel correcting unit 903, carries out two joint channel corrections between RRU for described RRU by revealing cable;

The first associated units 904 and the second associated units 905, for regarding two RRU after proofreading and correct as an overall RRU, carry out joint channel correction by revealing cable with the 3rd RRU; Regard three RRU after proofreading and correct as an overall RRU, carry out joint channel correction by revealing cable with the 4th RRU, the rest may be inferred, completes the joint channel correction between different RRUs by revealing cable.

Or program A specifically can comprise:

Selected cell 1002, the reference RRU proofreading and correct as joint channel for choosing any one RRU of described different RRUs;

The 3rd associated units 1003, does joint channel correction by revealing cable with described any one RRU choosing for described different RRUs.

Or program A specifically can comprise:

The first joint channel correcting unit 901, the second associating correcting units 1101.

Or program A specifically can comprise:

The first joint channel correcting unit 1001, the second associating correcting units 1201

In program A the specific implementation of each unit referring to Fig. 9 or Figure 10 or Figure 11 or embodiment illustrated in fig. 12 in corresponding units, be not repeated herein.

The foregoing is only the preferred embodiment of the present invention, do not form limiting the scope of the present invention.Any any amendment of doing within the present invention, be equal to and replace and improvement etc., all should be included within requirement of the present invention comprises scope.

Claims (24)

1. the method that between long-distance radio frequency unit RRU, joint channel is proofreaied and correct, is characterized in that, described method comprises:

Carry out the joint channel correction between different radio frequency far-pulling module RRU by revealing cable, make described correction coefficient between different RRUs be multiplied by the value of the corresponding channel response of sending out passage, and described receipts correction coefficient between described different RRU to be multiplied by the ratio of value of the channel response of corresponding receipts passage identical.

2. method according to claim 1, is characterized in that, described joint channel of being undertaken between different RRUs by leakage cable is proofreaied and correct, and comprising:

Same RRU is by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Described RRU carries out two joint channel corrections between RRU by revealing cable;

Regard two RRU after proofreading and correct as an overall RRU, carry out joint channel correction by revealing cable with the 3rd RRU;

Regard three RRU after proofreading and correct as an overall RRU, carry out joint channel correction by revealing cable with the 4th RRU, the rest may be inferred, completes the joint channel correction between different RRUs by revealing cable.

3. method according to claim 1, is characterized in that, described joint channel of being undertaken between different RRUs by leakage cable is proofreaied and correct, and comprising:

Choose the reference RRU that any one RRU in described different RRUs proofreaies and correct as joint channel;

Described different RRUs is done joint channel correction by revealing cable with described any one RRU choosing.

4. according to the method described in any one in claims 1 to 3, it is characterized in that, described method also comprises:

Different RRUs, by revealing cable, is carried out interior correction type or is proofreaied and correct the joint channel correction between type RRU outward.

5. method according to claim 4, is characterized in that, described different RRUs is by revealing cable, and the joint channel of carrying out between outer correction type RRU is proofreaied and correct, and comprising:

For described outer correction, due to calibration reference passage and coupling disc, or it is connected to proofread and correct coupling function module employing radio frequency cable, and described radio frequency cable is replaced by leakage cable, and the joint channel of carrying out between RRU is proofreaied and correct.

6. method according to claim 4, is characterized in that, described different RRUs, by revealing cable, is carried out interior correction type or proofreaied and correct the joint channel correction between type RRU outward, comprising:

Proofread and correct for the joint channel completing between multiple interior correction RRU, the radio frequency cable that replacing RRU root service channel is connected with antenna is for revealing cable, and the joint channel of carrying out between RRU is proofreaied and correct.

7. the method that between RRU, joint channel is proofreaied and correct, is characterized in that, described method comprises:

The joint channel of being undertaken between different RRUs by transmission medium is proofreaied and correct, the reference signal that described transmission medium is proofreaied and correct for transmission channel, make described correction coefficient between different RRUs be multiplied by the value of the corresponding channel response of sending out passage, and described receipts correction coefficient between described different RRU to be multiplied by the ratio of value of the channel response of corresponding receipts passage identical.

8. method according to claim 7, is characterized in that, described joint channel of being undertaken between different RRUs by transmission medium is proofreaied and correct, and comprising:

Same RRU is by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Described RRU carries out two joint channel between RRU by transmission medium and proofreaies and correct;

Regard two RRU after proofreading and correct as an overall RRU, follow the 3rd RRU to carry out joint channel correction by transmission medium;

Regard three RRU after proofreading and correct as an overall RRU, follow the 4th RRU to carry out joint channel correction by transmission medium, the rest may be inferred, and the joint channel completing between different RRUs by transmission medium is proofreaied and correct.

9. method according to claim 7, is characterized in that, described joint channel of being undertaken between different RRUs by transmission medium is proofreaied and correct, and comprising:

Choose the reference RRU that any one RRU in described different RRUs proofreaies and correct as joint channel;

Described different RRUs is followed described any one RRU choosing to make joint channel by transmission medium and is proofreaied and correct.

10. according to the method described in claim 7 to 9 any one, it is characterized in that, described method also comprises:

Different RRUs, by transmission medium, is carried out interior correction type or is proofreaied and correct the joint channel correction between type RRU outward.

11. methods according to claim 10, is characterized in that, described different RRUs is by transmission medium, and the joint channel of carrying out between outer correction type RRU is proofreaied and correct, and comprising:

For described outer correction, due to calibration reference passage and coupling disc, or it is connected to proofread and correct coupling function module employing radio frequency cable, and described radio frequency cable is replaced by transmission medium, and the joint channel of carrying out between RRU is proofreaied and correct.

12. methods according to claim 10, is characterized in that, described different RRUs, by transmission medium, is carried out interior correction type or proofreaied and correct the joint channel correction between type RRU outward, comprising:

Proofread and correct for the joint channel completing between multiple interior correction RRU, the radio frequency cable that replacing RRU root service channel is connected with antenna is transmission medium, and the joint channel of carrying out between RRU is proofreaied and correct.

The equipment that between 13. 1 kinds of RRU, joint channel is proofreaied and correct, is characterized in that, described equipment comprises:

The first joint channel correcting unit, for carrying out the joint channel correction between different RRUs by revealing cable, make described correction coefficient between different RRUs be multiplied by the value of the corresponding channel response of sending out passage, and described receipts correction coefficient between described different RRU to be multiplied by the ratio of value of the channel response of corresponding receipts passage identical.

14. equipment according to claim 13, is characterized in that, described the first joint channel correcting unit, comprising:

Self-correcting unit, be used for same RRU by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Joint channel correcting unit, carries out two joint channel corrections between RRU for described RRU by revealing cable;

The first associated units, for regarding two RRU after proofreading and correct as an overall RRU, carries out joint channel correction by revealing cable with the 3rd RRU;

The second associated units, for regarding three RRU after proofreading and correct as an overall RRU, carries out joint channel correction by revealing cable with the 4th RRU, and the rest may be inferred, completes the joint channel correction between different RRUs by revealing cable.

15. equipment according to claim 13, is characterized in that, described the first joint channel correcting unit, comprising:

Choose unit, the reference RRU proofreading and correct as joint channel for choosing any one RRU of described different RRUs;

The 3rd associated units, does joint channel correction by revealing cable with described any one RRU choosing for described different RRUs.

16. according to claim 13 to the equipment described in any one in 15, it is characterized in that, described equipment also comprises the second joint channel correcting unit:

Described the second joint channel correcting unit,, carries out interior correction type or proofreaies and correct the joint channel correction between type RRU outward by revealing cable for different RRUs.

17. equipment according to claim 16, it is characterized in that, described the second joint channel correcting unit, be used for for described outer correction, due to calibration reference passage and coupling disc, or proofread and correct coupling function module and adopt radio frequency cable to be connected, described radio frequency cable is replaced by leakage cable, the joint channel of carrying out between RRU is proofreaied and correct.

18. equipment according to claim 16, it is characterized in that, described the second joint channel correcting unit, for proofreading and correct for the joint channel completing between multiple RRU, the radio frequency cable that replacing RRU root service channel is connected with antenna is for revealing cable, and the joint channel of carrying out between RRU is proofreaied and correct.

The equipment that between 19. 1 kinds of RRU, joint channel is proofreaied and correct, is characterized in that, described equipment comprises:

The first joint channel correcting unit, proofread and correct for the joint channel of being undertaken by transmission medium between different RRUs, the reference signal that described transmission medium is proofreaied and correct for transmission channel, make described correction coefficient between different RRUs be multiplied by the value of the corresponding channel response of sending out passage, and described receipts correction coefficient between described different RRU to be multiplied by the ratio of value of the channel response of corresponding receipts passage identical.

20. equipment according to claim 19, is characterized in that, described the first joint channel correcting unit, comprising:

Self-correcting unit, be used for same RRU by self-tuning method, obtain and send out correction coefficient and receive correction coefficient, make described the correction coefficient of same RRU be multiplied by the value of the corresponding channel response of sending out passage, the ratio of value that is multiplied by the channel response of corresponding receipts passage with the described receipts correction coefficient of described same RRU is identical;

Joint channel correcting unit, carries out two joint channel between RRU for described RRU by transmission medium and proofreaies and correct;

The first associated units, for regarding two RRU after proofreading and correct as an overall RRU, follows the 3rd RRU to carry out joint channel correction by transmission medium;

The second associated units, for regarding three RRU after proofreading and correct as an overall RRU, follows the 4th RRU to carry out joint channel correction by transmission medium, and the rest may be inferred, and the joint channel completing between different RRUs by transmission medium is proofreaied and correct.

21. equipment according to claim 20, is characterized in that, described the first joint channel correcting unit, comprising:

Choose unit, the reference RRU proofreading and correct as joint channel for choosing any one RRU of described different RRUs;

The 3rd associated units, follows described any one RRU choosing to make joint channel for described different RRUs by transmission medium and proofreaies and correct.

22. according to the equipment described in any one in claim 20, it is characterized in that, described equipment also comprises the second joint channel correcting unit:

Described the second joint channel correcting unit,, carries out interior correction type or proofreaies and correct the joint channel correction between type RRU outward by transmission medium for different RRUs.

23. according to the equipment described in claim 20 to 22, it is characterized in that, described the second joint channel correcting unit, be used for for described outer correction, due to calibration reference passage and coupling disc, or proofread and correct coupling function module and adopt radio frequency cable to be connected, described radio frequency cable is replaced by transmission medium, the joint channel of carrying out between RRU is proofreaied and correct.

24. equipment according to claim 23, it is characterized in that, described the second joint channel correcting unit, for proofreading and correct for the joint channel completing between multiple RRU, the radio frequency cable that replacing RRU root service channel is connected with antenna is transmission medium, and the joint channel of carrying out between RRU is proofreaied and correct.

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