CN103856273B - The method and apparatus of radio-frequency channel correction between interior correction RRU - Google Patents

Abstract

The present invention provides the method and apparatus of radio-frequency channel correction between a kind of interior correction RRU.Relate to communication technical field.Solve the problem that can not carry out associating correction between interior correction RRU.Specifically may include that the first signal coupling unit, correction port, the first signal coupling unit is for by correcting port and except other RRU carry out data interaction, in order to interior correction RRU carries out associating correction with other RRU.Can be used for interior correction RRU between in radio-frequency channel correction in.

Description

The method and apparatus of radio-frequency channel correction between interior correction RRU

Technical field

The present invention relates to communication technical field, particularly relate to the method and apparatus of radio-frequency channel correction between interior correction RRU (RemoteRadioUnit, long-distance radio frequency unit).

Background technology

When two base stations communicate, it is necessary to the middle radio-frequency channel (for describing below simplicity by middle radio-frequency channel referred to as passage) of base station is corrected, identical to ensure the response between passage.

RRU can include but not limited to: corrects outward RRU, interior correction RRU.

Fig. 1 is the structural representation of outer correction RRU, outer correction RRU correcting process may include that BBU (BasebandUnit, Base Band Unit) it is corrected may include that BBU receives correction reference signal by generate first and passes sequentially through RRU numeric field to business receipts passage according to the first receipts correction reference signal generated, correction is with reference to sending out passage, coupling disc/correction coupling circuit and business are received passage 0 to business and are received passage (N-1), RRU numeric field transmits to BBU, process to the received signal at BBU, receive signal and be designated as the second receipts correction reference signal, BBU receives correction reference signal according to second and calculates the receipts correction coefficient of each business receipts passage, and according to receiving correction coefficient, business receipts passage 0 to business receipts passage (N-1) is corrected.

Fig. 2 is interior correction RRU, and the bearing calibration of interior correction RRU is similar with the bearing calibration of outer correction RRU, is distinctive in that, interior correction RRU corrects compared with RRU without external calibration interface with outer.

Fig. 3 corrects RRU (RRU0 and RRU1) outside two to carry out the structural representation of joint channel correction.

Concrete, it is corrected to example with the joint channel of RRU0 and RRU1, RRU0 sends receipts correction reference signal from correction port A, respectively through the coupling disc 1 that coupling disc 0 corresponding for RRU0 is corresponding with RRU1, receive passage in respective business and carry out signal transmission, the receipts correction reference signal received is processed by each BBU, obtains the receipts correction coefficient of RRU0 and RRU1；RRU0 sends out channel emission from business and sends out correction reference signal, it is looped back to port A by coupling disc 0, the signal that BBU process corresponding for RRU0 receives, what obtain RRU0 sends out correction coefficient, in like manner, RRU1 sends out channel emission from business and sends out correction reference signal, is looped back to port B by coupling disc 1, the signal that BBU process corresponding for RRU1 receives, what obtain RRU1 sends out correction coefficient；BBU utilizes the receipts correction coefficient obtained and sends out correction coefficient, the compensation that channel response is inconsistent can be transmitted/received by finishing service: business is sent out channel response (can send out passage interference coefficient for business) and is multiplied by a correction coefficient, obtain business and send out passage equivalent channel response, business is received channel response (can receive passage interference coefficient for business) and is multiplied by receipts correction coefficient, obtain business and receive passage equivalent channel response, reaching business corresponding for RRU0 and RRU1, to send out passage equivalent channel response equal, and it is equal that business receives passage equivalent channel response.It is finally completed the purpose of joint channel correction.

State in the process that between RRU, radio-frequency channel corrects in realization, inventor have found that in prior art, at least there are the following problems: owing to interior correction RRU does not include external correction interface, correction reference signal cannot be sent by interior correction RRU to other RRU, thus cannot realize combining correction shown in Fig. 3.

Summary of the invention

Embodiments of the invention provide the method and apparatus of radio-frequency channel correction between a kind of interior correction RRU, solve the problem that can not carry out associating correction between interior correction RRU.

For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that

First aspect, it is provided that correction RRU in a kind of, including:

First signal coupling unit, correction port, described first signal coupling unit is for carrying out data interaction by described correction port with other RRU except described interior correction RRU, in order to described interior correction RRU carries out associating correction with other RRU described.

In the implementation that the first is possible, described first signal coupling unit is specifically for transmission correction reference signal, and receives the correction reference signal sent of other RRU except described interior correction RRU by described correction port.

In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, the first signal coupling unit is specifically for being sent to other RRU described by described correction reference signal by described correction port.

In conjunction with the implementation that the second of first aspect is possible, in the implementation that the third is possible, described correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

The third possible implementation in conjunction with first aspect, in the 4th kind of possible implementation, if described correction reference signal is for receiving correction reference signal, then described first signal coupling unit, specifically for receiving by correcting with reference to the receipts correction reference signal sending out channel transfer, and described receipts correction reference signal is sent to other RRU described by described correction port, it is additionally operable to receive passage by described business simultaneously and described receipts correction reference signal is sent to BBU.

The 4th kind of possible implementation in conjunction with first aspect, in the 5th kind of possible implementation, if described correction reference signal is associating correction reference signal, then described first signal coupling unit, specifically for receiving by correcting with reference to the associating correction reference signal sending out channel transfer, and described associating correction reference signal is sent to other RRU described by described correction port；It is additionally operable to receive associating correction reference signal by described correction port, the associating correction reference signal received is sent to described BBU with reference to receiving passage by described correction.

In conjunction with the 5th kind of possible implementation of first aspect, in the 6th kind of possible implementation, described first signal coupling unit includes at least two branch/combiner, and interior correction RRU includes: at least two correction port.

The 6th kind of possible implementation in conjunction with first aspect, in the 7th kind of possible implementation, described first signal coupling unit, it is additionally operable to receive described BBU and sends out, by described business, the correction reference signal that passage sends, described correction reference signal is sent to other RRU described by described correction port, and described correction reference signal is sent to described BBU with reference to receipts passage by correcting.

The 6th kind of possible implementation or the 7th kind of possible implementation in conjunction with first aspect, in the 8th kind of possible implementation, described first signal coupling unit, corrects any first correction port in port also particularly useful for the receipts correction reference signal that will receive or described associating correction reference signal by described at least two and sends to other RRU described；It is additionally operable to only by the second correction port, the correction reference signal of sending out received is not sent extremely other RRU described by described first correction port transmission.

In conjunction with the first possible implementation of first aspect or first aspect to the 8th kind of any one implementation of possible implementation, in the 9th kind of possible implementation, described interior correction RRU by described correction port and utilizes the correction port of communication media and other RRU described to communicate, in order to described interior correction RRU and other RRU described carry out channel combined correction.

Second aspect, it is provided that correction long-distance radio frequency unit RRU in a kind of, including:

First signal coupling unit, secondary signal coupling unit, described first signal coupling unit is for carrying out data interaction by described secondary signal coupling unit with other RRU except described interior correction RRU, in order to described interior correction RRU carries out associating correction with other RRU described.

In the implementation that the first is possible, described first signal coupling unit will be specifically for correcting reference signal transmission extremely described secondary signal coupling unit, described secondary signal coupling unit is for transmitting described correction reference signal to any antenna port place, and is sent described correction reference signal to other RRU described by described any antenna port.

The first possible implementation in conjunction with first aspect, in the implementation that the second is possible, described first signal coupling unit is also particularly useful for passing sequentially through described any antenna port and the correction reference signal of described other RRU transmission of described secondary signal coupling unit reception.

In conjunction with the implementation that the second of first aspect is possible, in the implementation that the third is possible, described correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

The third possible implementation in conjunction with first aspect, in the 4th kind of possible implementation, if described correction reference signal is for receiving correction reference signal, then described first signal coupling unit, specifically for receiving by correcting with reference to the receipts correction reference signal sending out channel transfer, and described receipts correction reference signal is sent to other RRU described by described secondary signal coupling unit and described any antenna port, it is additionally operable to receive passage by described business and described receipts correction reference signal is sent to BBU.

The 4th kind of possible implementation in conjunction with first aspect, in the 5th kind of possible implementation, if described correction reference signal is associating correction reference signal, then described first signal coupling unit, specifically for receiving by correcting with reference to the associating correction reference signal sending out channel transfer, and described associating correction reference signal is sent to other RRU described by described secondary signal coupling unit and described any antenna port；It is additionally operable to pass sequentially through described any antenna port and described secondary signal coupling unit reception associating correction reference signal, and the associating correction reference signal received is corrected with reference to receipts passage transmission to described BBU by described.

The third aspect, a kind of method of radio-frequency channel correction between interior correction RRU is provided, in the interior correction RRU that the first possible implementation to any one mode in the 9th kind of possible implementation of first aspect or first aspect of being applied to provides, the method includes:

Generate correction reference signal；

Described correction reference signal is carried out mutual, in order to described interior correction RRU carries out associating correction with other RRU described by described correction port and other RRU described.

In the implementation that the first is possible, described carry out described correction reference signal by described correction port and other RRU described and include alternately:

The correction reference signal sent of other RRU except described interior correction RRU is received by described correction port.

In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, described carry out described correction reference signal by described correction port with other RRU described and also include alternately:

By described correction port, described correction reference signal is sent to other RRU described.

In conjunction with the implementation that the second of the third aspect is possible, in the implementation that the third is possible, described correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

In conjunction with the third possible implementation of the third aspect, in the 4th kind of possible implementation, described by described correction port, described correction reference signal be sent to other RRU described include:

Pass sequentially through correction and described correction reference signal is sent to other RRU except described interior correction RRU with reference to sending out passage, described correction port, secondary signal coupling unit and antenna, described correction reference signal is coupled into described antenna launch, described antenna is the antenna reusing certain service channel.

In conjunction with the 4th kind of possible implementation of the third aspect, in the 5th kind of possible implementation, described secondary signal coupling unit is positioned at other RRU described or is positioned at described inner antenna.

In conjunction with the 5th kind of possible implementation of the third aspect, in the 6th kind of possible implementation, the described correction reference signal being received other RRU transmission except described interior correction RRU by described correction port is included:

Pass sequentially through described antenna, described secondary signal coupling unit and described correction port and receive other RRU described correction reference signal sent and associating correction reference signal.

In conjunction with the 6th kind of possible implementation of the third aspect, in the 7th kind of possible implementation, if described correction reference signal is for receiving correction reference signal, then by described correction port, described correction reference signal is sent to other RRU described described in and includes:

Described receipts correction reference signal passes sequentially through described correction receive passage be transmitted with reference to a passage, business, and also pass sequentially through described correction with reference to sending out passage, described first signal coupling unit and described correction port by described receipts correction reference signal transmission to other RRU described.

The 7th kind of possible implementation in conjunction with the third aspect, in the 8th kind of possible implementation, if described correction reference signal is associating correction reference signal, then by described correction port, described correction reference signal is sent to other RRU described described in and includes:

Described associating correction reference signal passes sequentially through described correction send to other RRU described with reference to sending out passage, described first signal coupling unit and described correction port.

In conjunction with the 8th kind of possible implementation of the third aspect, in the 9th kind of possible implementation, described correction reference signal also includes: send out correction reference signal；

If described interior correction RRU includes at least two correction port, and described correction reference signal is for sending out correction reference signal, then by described correction port, described correction reference signal is sent to other RRU described described in and includes:

The business that passed sequentially through by described correction reference signal is sent out passage, described correction and is transmitted with reference to receiving passage, and also passes sequentially through described business and send out passage, described first signal coupling unit and described correction port described correction reference signal is sent extremely other RRU described.

In conjunction with the 9th kind of possible implementation of the third aspect, in the tenth kind of possible implementation, described by described correction port, described correction reference signal be sent to other RRU described include:

By described at least two, the described receipts correction reference signal received is corrected any first correction port in port send to other RRU described；

Do not sent by described first correction port only sent sending out correction reference signal described in receiving to other RRU described by the second correction port.

Fourth aspect, it is provided that a kind of method of radio-frequency channel correction between interior correction RRU, is applied to the first possible implementation of second aspect or second aspect to any one possible implementation in the 5th possible implementation, including:

Generate correction reference signal；

It is corrected the mutual of reference signal with other RRU described, in order to described interior correction RRU carries out associating correction with other RRU described by described first signal coupling unit, described secondary signal coupling unit and any antenna port.

In the implementation that the first is possible, described by described first signal coupling unit, described secondary signal coupling unit and arbitrarily antenna port and other RRU described be corrected including alternately of reference signal:

By described first signal coupling unit, described secondary signal coupling unit and any antenna port, described correction reference signal is sent to other RRU described.

The first possible implementation in conjunction with first aspect, in the implementation that the second is possible, described by described first signal coupling unit, described secondary signal coupling unit and arbitrarily antenna port and other RRU described be corrected including alternately of reference signal:

Correction reference signal by described first signal coupling unit, described secondary signal coupling unit and arbitrarily described other RRU transmission of antenna port reception.

In conjunction with the implementation that the second of first aspect is possible, in the implementation that the third is possible, described correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

The third possible implementation in conjunction with first aspect, in the 4th kind of possible implementation, described by described first signal coupling unit, described secondary signal coupling unit and arbitrarily antenna port described correction reference signal sent to other RRU described and includes:

Passing sequentially through correction with reference to sending out passage, described first signal coupling unit and described secondary signal coupling unit and any antenna port by the transmission of described correction reference signal to other RRU described, the antenna being connected with described any antenna port is the antenna reusing certain service channel.

5th aspect, it is provided that the device of radio-frequency channel correction between a kind of interior correction RRU, including:

Correction unit, is used for generating correction reference signal, carries out associating correction according to described correction reference signal with other RRU except described interior correction RRU；

Interactive unit, mutual for carrying out described correction reference signal by described correction port and other RRU described.

6th aspect, it is provided that the device of radio-frequency channel correction between a kind of interior correction RRU, including:

Correction unit, is used for generating correction reference signal, carries out associating correction according to described correction reference signal with other RRU except described interior correction RRU；

Interactive unit, for being corrected the mutual of reference signal by described first signal coupling unit, described secondary signal coupling unit and any antenna port with other RRU described.

The method and apparatus of radio-frequency channel correction between the interior correction RRU that the embodiment of the present invention provides, after adopting such scheme, by arranging the first signal coupling unit, correction port in interior correction RRU, first signal coupling unit is for carrying out data interaction by described correction port with except other RRU described, in order to described interior correction RRU carries out associating correction with other RRU described.So so that interior correction RRU can carry out associating correction by the first signal coupling unit, correction port with other RRU.

Accompanying drawing explanation

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

The outer correction RRU structural representation that Fig. 1 provides for the present embodiment；

The interior correction RRU structural representation that Fig. 2 provides for the present embodiment；

Fig. 3 is the structural representation that outside two, correction RRU carries out joint channel correction；

The structural representation of a kind of interior correction RRU that Fig. 4 provides for the present embodiment；

The structural representation of the another kind of interior correction RRU that Fig. 5 provides for the present embodiment；

Fig. 6 is the structural representation of a kind of scene applied of interior correction RRU shown in this Fig. 4；

Fig. 7 a is the structural representation of the another kind of scene applied of interior correction RRU shown in this Fig. 4；

Fig. 7 b is the structural representation of another scene applied of interior correction RRU shown in this Fig. 4；

Fig. 8 is the structural representation of a kind of scene applied of interior correction RRU shown in this Fig. 5；

Fig. 9 for the present embodiment provide a kind of interior correction RRU between in radio-frequency channel correction method flow diagram；

Figure 10 for the present embodiment provide another kind of between correction RRU in the method flow diagram of radio-frequency channel correction；

Figure 11 is the structural representation carrying out associating correction of the interior correction RRU shown in a kind of Fig. 4 of employing；

Figure 12 is the structural representation carrying out associating correction of the interior correction RRU shown in a kind of Fig. 5 of employing；

Figure 13 is the another kind of interior correction RRU adopted shown in Fig. 4 structural representation carrying out associating correction；

Figure 14 for the present embodiment provide a kind of interior correction RRU between in radio-frequency channel correction apparatus structure schematic diagram.

Detailed description of the invention

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.

In prior art, when in using, correction RRU carries out channel correcting, due to, the interior RRU that corrects does not include external correction interface, makes RRU to be sent to other RRU by correction reference signal, therefore, it is impossible to realize combining correction shown in Fig. 3.

In order to solve to cannot be carried out the problem combining correction between interior correction RRU, the present embodiment provides a kind of interior correction RRU, as shown in Figure 4, it is possible to including:

First signal coupling unit 1, correction port 2, the first signal coupling unit 1 is for by correcting port 2 and except other RRU carry out data interaction, in order to interior correction RRU carries out associating correction with other RRU.

After adopting such scheme, by arranging the first signal coupling unit, correction port in interior correction RRU, the first signal coupling unit is for carrying out data interaction by correction port with except other RRU, in order to interior correction RRU carries out associating correction with other RRU.So so that interior correction RRU can carry out associating correction by the first signal coupling unit, correction port with other RRU.

The present embodiment provides another kind of interior correction RRU, and this interior correction RRU is further expanding the interior correction RRU shown in Fig. 4, as shown in Figure 4, it is possible to including:

First signal coupling unit 1, correction port 2, the first signal coupling unit 1 includes branch/combiner, and the first signal coupling unit 1 is for by correcting port 2 and except other RRU carry out data interaction, in order to interior correction RRU carries out associating correction with other RRU.

Further, the first signal coupling unit 1 is specifically for transmission correction reference signal, and receives the correction reference signal sent of other RRU except interior correction RRU by correcting port 2.

Further, the first signal coupling unit 1 is specifically for being sent to other RRU by correction reference signal by correcting port 2.

Further, correction reference signal can include but not limited to: receives at least one in correction reference signal, associating correction reference signal.

Wherein, business receipts passage can be corrected by BBU according to the receipts correction reference signal received；According to the correction reference signal received, business can be sent out passage to be corrected；Can according to the receipts correction reference signal received, send out correction reference signal, associating correction reference signal at least one at least two correct RRU combine correction.

Further, if correction reference signal is for receiving correction reference signal, then the first signal coupling unit 1, specifically for receiving by correcting with reference to the receipts correction reference signal sending out channel transfer, and receipts correction reference signal is sent to other RRU by correcting port 2, it is additionally operable to receive passage by business simultaneously and receipts correction reference signal is sent to BBU.

Further, if correction reference signal is associating correction reference signal, then the first signal coupling unit 1, specifically for receiving by correcting with reference to the associating correction reference signal sending out channel transfer, and sends associating correction reference signal to other RRU by correcting port；It is additionally operable to, by correcting port reception associating correction reference signal, to BBU, BBU, the associating correction reference signal received be processed with reference to receiving passage transmission by correction by the associating correction reference signal received, it is thus achieved that the penalty coefficient of correction between RRU.

Further, the first signal coupling unit includes at least two branch/combiner；

Interior correction RRU can also include: secondary signal coupling unit, described secondary signal coupling unit includes: electrical switch, described interior correction RRU is used for passing sequentially through described first signal coupling unit and described secondary signal coupling unit and is sent by corresponding correction reference signal to described correction port, is additionally operable to pass sequentially through described secondary signal coupling unit and described first signal coupling unit and sends the described correction reference signal received by described correction port to BBU.Specific embodiment may refer to the implementation example of the scene shown in FIG. 7 below b.

Further, the first signal coupling unit 1 can include at least two branch/combiner, and interior correction RRU may include that at least two correction port 2.

The quantity of branch/combiner and the quantity of correction port are not construed as limiting by the present embodiment, it is possible to be set according to actual needs, do not repeat them here.

Further, correction reference signal can also include: sends out correction reference signal.

Further, first signal coupling unit 1, it is additionally operable to receive BBU and sends out, by business, the correction reference signal that passage sends, correction reference signal will be sent out by correcting port 2 and be sent to other RRU, and send sending out correction reference signal to BBU with reference to receipts passage by correcting.

Further, the first signal coupling unit 1, sent to other RRU by first correction port 2 any at least two correction port 2 also particularly useful for by the receipts received correction reference signal or associating correction reference signal；It is additionally operable to do not sent the correction reference signal received by the first correction port 1 only sent to other RRU by the second correction port 2.

Further, interior correction RRU is by correcting port 2 and utilizing the correction port 2 of communication media and other RRU to communicate, in order to interior correction RRU and other RRU carry out channel combined correction.

Further, communication media can be, but not limited to can be used to carry out, for wired and wireless etc., the medium that signal communicates, for instance, it is possible to for radio-frequency cable.

As an embodiment of the present embodiment, the method that internal correction RRU carries out associating correction can include but not limited to:

BBU0 calculates transmit/receive correction coefficient according to the correction reference signal that transmits/receives received, and RRU0 business is transmitted/received passage is corrected according to transmitting/receiving correction coefficient；Simultaneously, the receipts correction reference signal that BBU0 generates also is passed sequentially through RRU0 correction and sends to BBU1 with reference to receiving passage with reference to sending out passage, RRU1 correction by RRU0, BBU1 calculates penalty coefficient between RRU according to the receipts correction reference signal that receives, and according to the receipts correction coefficient to RRU1 of the penalty coefficient between RRU or send out a correction coefficient and be modified.

Further alternative, BBU1 can also calculate penalty coefficient between RRU according to receiving associating correction reference signal.

What deserves to be explained is, BBU0 and BBU1 can be same BBU (such as single community RRU Two bors d's oeuveres scene), it is also possible to be different BBU.

After adopting such scheme, by arranging the first signal coupling unit, correction port in interior correction RRU, first signal coupling unit branch/combiner, first signal coupling unit is for by correcting port and except other RRU carry out data interaction, in order to interior correction RRU carries out associating correction with other RRU.So so that interior correction RRU can carry out associating correction by the first signal coupling unit, correction port with other RRU.

The present embodiment provides a kind of interior correction long-distance radio frequency unit RRU, as it is shown in figure 5, may include that

First signal coupling unit 1, secondary signal coupling unit 2, first signal coupling unit 1 includes branch/combiner, first signal coupling unit 1 is for carrying out data interaction by secondary signal coupling unit 2 with other RRU except interior correction RRU, in order to interior correction RRU carries out associating correction with other RRU.

After adopting such scheme, by arranging the first signal coupling unit, secondary signal coupling unit in interior correction RRU, first signal coupling unit includes branch/combiner, first signal coupling unit is for carrying out data interaction by secondary signal coupling unit with other RRU except interior correction RRU, in order to interior correction RRU carries out associating correction with other RRU.

The present embodiment provides another kind of interior correction long-distance radio frequency unit RRU, and this interior correction RRU is further expanding the interior correction RRU shown in Fig. 5, as it is shown in figure 5, may include that

First signal coupling unit 1, secondary signal coupling unit 2, the first signal coupling unit 1 is for carrying out data interaction by secondary signal coupling unit 2 with other RRU except interior correction RRU, in order to interior correction RRU carries out associating correction with other RRU.

Further, first signal coupling unit 1 is specifically for by correction reference signal transmission to secondary signal coupling unit 2, secondary signal coupling unit 2 will be for correcting reference signal transmission to any antenna port place, and be sent correction reference signal to other RRU by any antenna port.

Further, the first signal coupling unit 1 is also particularly useful for passing sequentially through any antenna port and secondary signal coupling unit receives other RRU correction reference signal sent.

Further, correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

Further, if correction reference signal is for receiving correction reference signal, then the first signal coupling unit 1, specifically for receiving by correcting with reference to the receipts correction reference signal sending out channel transfer, and receipts correction reference signal is sent to other RRU by secondary signal coupling unit 2 and any antenna port, it is additionally operable to receive passage by business and receipts correction reference signal is sent to BBU.

Further, if correction reference signal is associating correction reference signal, then the first signal coupling unit 2, specifically for receiving by correcting with reference to the associating correction reference signal sending out channel transfer, and associating correction reference signal is sent to other RRU by secondary signal coupling unit 2 and any antenna port；It is additionally operable to pass sequentially through any antenna port and secondary signal coupling unit 2 reception associating correction reference signal, and by the associating correction reference signal received by correcting with reference to receipts passage transmission to BBU.

After adopting such scheme, correction reference signal is sent to other RRU by secondary signal coupling unit and secondary signal coupling unit by arranging in interior correction RRU by any antennal interface, so so that interior correction RRU can carry out associating correction by secondary signal coupling unit with correction RRU in other.

Provide below a kind of scene to be specifically described.As shown in Figure 6, in this scene, RRU0 and RRU1 all adopts the interior correction RRU shown in Fig. 4, RRU0 and RRU1 each includes a correction port 2, first signal coupling unit includes a branch/combiner 11, and wherein, branch/combiner 11 includes an input port and two output ports.Further, to be corrected illustrating to business receipts passage, and RRU0 and RRU1 is carried out data transmission by communication media.

The receipts correction reference signal generated is sent to RRU0 numeric field by BBU0；RRU0 numeric field transmits receiving correction reference signal to branch/combiner 11 with reference to a passage by correcting；Branch/combiner 11 passes sequentially through one of them output port, correction couples circuit, business is received passage and sent receipts correction reference signal to RRU0 numeric field, the receipts correction reference signal received is sent to BBU0 by RRU0 numeric field again, so that BBU0 obtains according to the receipts correction reference signal received receives correction coefficient, and it is corrected according to receiving the correction coefficient business receipts passage to RRU0；

Simultaneously, branch/combiner 11 can also pass sequentially through another output port and correction port and radio-frequency cable will be received correction reference signal and send and pass sequentially through the correction port of RRU1, branch/combiner 11 and correction to RRU1, RRU1 and send the RRU0 that the receives receipts correction reference signal sent to RRU1 numeric field with reference to receiving passage；RRU1 numeric field will be received correction reference signal again and send to BBU1, so that BBU1 obtains penalty coefficient between RRU according to the receipts correction reference signal received, and according to the receipts correction coefficient to RRU1 of the penalty coefficient between RRU or send out a correction coefficient and be modified, reach the purpose of RRU0 and RRU1 joint channel correction.

Further, between BBU1 acquisition RRU, penalty coefficient can also include:

BBU0 generates associating correction reference signal, and associating correction reference signal is sent to RRU0 numeric field, RRU0 numeric field passes sequentially through correction with reference to sending out passage, branch/combiner, correction port by associating correction reference signal transmission to RRU1, RRU1 passes sequentially through correction port, branch/combiner, correction and sends the associating correction reference signal received to RRU1 numeric field with reference to receiving passage, the associating correction reference signal received is sent to BBU1 by RRU1 numeric field, in order to BBU1 obtains penalty coefficient between RRU according to the associating correction reference signal received.

BBU1 is obtained the method for penalty coefficient between RRU and is not construed as limiting by the present embodiment, for technology well known to those skilled in the art, and can be set according to actual needs, not repeat them here.

Further, can communicate through but not limited to High Speed Serial, high speed parallel communication mouth between BBU and RRU.

Further, if N represents the number of RRU and N > 2, then the output port of branch/combiner can be N-1.

The present embodiment internally corrects RRU to carry out the method for associating correction and is not construed as limiting, and for technology well known to those skilled in the art, and can be set according to actual needs, not repeat them here.

What deserves to be explained is, the interior correction RRU that the present embodiment provides is not limited to be applied in the scene of above-mentioned offer, it is also possible to is applied in other scenes, does not repeat them here.

Provide below another kind of scene to be specifically described.As shown in Figure 7a, in this scene, RRU0 and RRU1 all adopts the interior correction RRU shown in Fig. 4, and RRU0 and RRU1 each includes two correction ports (including correction port 21 and correction port 22), first signal coupling unit 1 includes two branch/combiners 11, and RRU0 and RRU1 is carried out data transmission by communication media.In this scene, only the signals transmission between RRU0 and RRU1 being briefly described, other aligning steps repeat no more.

nullConcrete，The business of RRU0 sends out channel correcting，The transfer process of correction reference signal can be: RRU0F-> RRU0D-> RRU0C-> RRU0A，The business of RRU1 sends out channel correcting，The transfer process of correction reference signal can be: RRU1F-> RRU1D-> RRU1C-> RRU1B-> RRU0E-> RRU0C-> RRU0A，The business of RRU0 receives channel correcting，The transfer process of correction reference signal can be: RRU0A-> RRU0C-> RRU0D-> RRU0F，The business of RRU1 receives channel correcting，The transfer process of correction reference signal can be: RRU0A-> RRU0C-> RRU0E-> RRU1B-> RRU1C-> RRU1D-> RRU1F.

Furthermore it is also possible to be applied in the scene shown in Fig. 7 b.

Concrete, the business of RRU0 sends out channel correcting, the transfer process of correction reference signal can be: RRU0F-> RRU0D-> RRU0C-> RRU0A, the business of RRU1 sends out channel correcting, the transfer process of correction reference signal can be: H-> RRU0E-> RRU0C-> RRU0A on the left of H-> on the right side of G-> on the right side of RRU1F-> RRU1D-> RRU1C-> RRU1B->, the business of RRU0 receives channel correcting.Now, left side electrical switch cuts out the path between H and G, only opens the path between H and E, it is to avoid correction reference signal is transmitted back in RRU1 by RRU0B again, and the path between G and H opened by the electrical switch on right side.

The business of RRU0 receives channel correcting, the transfer process of correction reference signal can be: RRU0A-> RRU0C-> RRU0D-> RRU0F, it is received from the service channel of RRU0, the business of RRU1 receives channel correcting, the transfer process of correction reference signal can be: G-> RRU1B-> RRU1C-> RRU1D-> RRU1F on the right side of H-> on the right side of H-> on the left of RRU0A-> RRU0C-> RRU0E->, it is received from the service channel of RRU1.Now, the path between H and E only opened by left side electrical switch, and the path between H and G only opened by right side electrical switch.

As such, it is possible to reach the purpose of common reference channel, the time delay that the passive device such as branch/combiner and cable communication medium causes can carry out configuration at high level and compensate.

Further, when RRU0 and RRU1 carries out associating timing, as shown in Figure 8, RRU0 and RRU1 can also be carried out data transmission by antenna.

In the present embodiment, also needing to arrange a secondary signal coupling unit outside RRU0, this secondary signal coupling unit can be, but not limited to for sending the correction reference signal gone out by correcting port transmission to any antenna port place；Then pass through this antenna port and the antenna that is connected to be sent to other RRU by the signal including correction reference signal received, it is achieved between RRU, combine correction.Correction reference signal may include that receipts correction reference signal, sends out correction reference signal, combines at least one in correction reference signal.

Wherein, the first signal coupling unit or secondary signal coupling unit may include that at least one in branch/combiner, directional coupler, attenuator, electrical switch.

What deserves to be explained is, the device comprised in the first signal coupling unit and secondary signal coupling unit can be the same or different, for instance, the first signal coupling unit is branch/combiner, and secondary signal coupling unit is directional coupler.

As an embodiment of the present embodiment, in the scene shown in Fig. 8, carrying out combining being corrected to example with RRU0 and RRU1, RRU0 and RRU1 carries out the method for associating correction and can include but not limited to:

What 1, calculate that RRU0 and RRU1 carries out independent timing respectively transmits/receives correction coefficient.

The receipts correction coefficient that BBU0 calculates according to the receipts correction reference signal received can be:

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

Wherein,Represent that the business of RRUk receives the receipts correction coefficient of passage TRXi,Represent that the correction of RRUk is with reference to the channel response (namely correction is with reference to the channel disturbance sending out passage TRX) sending out passage TRX,Representing that the business of RRUk receives the receipts channel response (business that is receives the channel disturbance of passage TRXi) of passage TRXi, n represents that subcarrier number, subscript or subscript UL, r, ct send out Biao Shi not receive passage, receives passage, and correction is with reference to sending out passage, and h represents channel response.

Sending out correction coefficient can be: ${\mathrm{\β}}_{k,i}^{\mathrm{DL}}\left(n\right)=\frac{1}{h_k^{\mathrm{cr}}\left(n\right)h_{k,i}^t\left(n\right)},k=\mathrm{0,1}---\left(2\right);$

Wherein,Represent that the business of RRUk sends out a correction coefficient of passage TRXi,Represent that the correction of RRUk is with reference to the receipts channel response (namely correction is with reference to the channel disturbance receiving passage TRX) receiving passage TRX,Representing that what the business of RRUk sent out passage TRXi sends out the channel response channel disturbance of passage TRXi (business of being send out), n represents that subcarrier number, subscript or subscript DL, t, cr send out Biao Shis not send out passage, sends out passage, and correction reference receipts passage, h represents channel response.

2, penalty coefficient between the RRU between RRU0 and RRU1 is calculated, and according to the receipts correction coefficient to RRU1 of the penalty coefficient between RRU or send out a correction coefficient and be modified.

After RRU0 and RRU1 complete independently self-correcting, the result after correction can be respectively:

$\frac{{\mathrm{\β}}_{\mathrm{0,0}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{0,0}}^r\left(n\right)}{{\mathrm{\β}}_{\mathrm{0,0}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\mathrm{\β}}_{\mathrm{0,1}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{0,1}}^r\left(n\right)}{{\mathrm{\β}}_{\mathrm{0,1}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{0,1}}^t\left(n\right)}=...=\frac{{\mathrm{\β}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right)h_{{0,N}_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\β}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right)h_{{0,N}_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{h_0^{\mathrm{cr}}\left(n\right)}{h_0^{\mathrm{ct}}\left(n\right)}---\left(3\right)$

$\frac{{\mathrm{\β}}_{\mathrm{1,0}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{1,0}}^r\left(n\right)}{{\mathrm{\β}}_{\mathrm{1,0}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\mathrm{\β}}_{\mathrm{1,1}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{1,1}}^r\left(n\right)}{{\mathrm{\β}}_{\mathrm{1,1}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{1,1}}^t\left(n\right)}=...=\frac{{\mathrm{\β}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{UL}}\left(n\right)h_{{1,N}_{\mathrm{ANT}}-1}^r\left(n\right)}{{\mathrm{\β}}_{1,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right)h_{{1,N}_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{h_1^{\mathrm{cr}}\left(n\right)}{h_1^{\mathrm{ct}}\left(n\right)}---\left(4\right)$

Wherein, the correction result that formula (3) is RRU0, the correction result that formula (4) is RRU0.Due to,Namely the signal after being transmitted by each service transmission channels is differed, therefore, it is impossible to carry out CoMPJT (CoordinatedMulti-PointJointTransmission, collaborative multi-point joint is launched).

In order to make up the problem that cannot be carried out CoMPJT, it is necessary to adjust and send out correction coefficient and receive correction coefficient.Specifically may include that

The correction reference signal that the RRU0 that RRU1 is received by the correction interface of RRU1 is sent by the correction interface of RRU0 is:

$r_1\left(n\right)=h_0^{\mathrm{ct}}\left(n\right)\·h_1^{\mathrm{cr}}\left(n\right)\·s_1\left(n\right)---\left(5\right)$

Wherein, s₁(n) for RRU0 to the RRU1 signal sent.

If communication media is wireless channel, then

$r_1\left(n\right)=h_0^{\mathrm{ct}}\left(n\right)\·h_{\mathrm{Air},10}\left(n\right)\·h_1^{\mathrm{ct}}\left(n\right)\·s_1\left(n\right)---\left(6\right)$

h_{Air, 10}The channel response of eating dishes without rice or wine of RRU1 it is sent to for RRU0.

The correction reference signal that the RRU1 that RRU0 is received by the correction interface of RRU0 is sent by the correction interface of RRU1 is:

$r_0\left(n\right)=h_1^{\mathrm{ct}}\left(n\right)\·h_0^{\mathrm{cr}}\left(n\right)\·s_0\left(n\right)---\left(\text{7}\right)$

If communication media is wireless channel, then

$r_0\left(n\right)=h_1^{\mathrm{ct}}\left(n\right)\·h_{\mathrm{Air},01}\left(n\right)\·h_0^{\mathrm{ct}}\left(n\right)\·s_0\left(n\right)---\left(8\right)$

h_{Air, 01}The channel response of eating dishes without rice or wine of RRU0 it is sent to for RRU1.For TDD (TimeDivisionDuplexing, time division duplex) system, h_{Air, 01}=h_{Air, 10}.Wherein, s₀(n) for RRU1 to the RRU0 signal sent.

Penalty coefficient between RRU can be obtained after channel estimating:

${\mathrm{\γ}}_0\left(n\right)=h_1^{\mathrm{ct}}\left(n\right)\·h_0^{\mathrm{cr}}\left(n\right)---\left(9\right)$

${\mathrm{\γ}}_1\left(n\right)=h_0^{\mathrm{ct}}\left(n\right)\·h_1^{\mathrm{cr}}\left(n\right)---\left(10\right)$

If communication media can be wireless channel, then

${\mathrm{\γ}}_0\left(n\right)=h_1^{\mathrm{ct}}\left(n\right)\·h_{\mathrm{Air},01}\left(n\right)\·h_0^{\mathrm{cr}}\left(n\right)---\left(11\right)$

${\mathrm{\γ}}_1\left(n\right)=h_0^{\mathrm{ct}}\left(n\right)\·h_{\mathrm{Air},10}\left(n\right)\·h_1^{\mathrm{cr}}\left(n\right)---\left(12\right)$

The receipts of the RRU0 after renewal and send out a correction coefficient and can be respectively:

${\widetilde{\mathrm{\β}}}_{0,i}^{\mathrm{DL}}\left(n\right)={\mathrm{\β}}_{0,i}^{\mathrm{DL}}\left(n\right)\·{\mathrm{\γ}}_0\left(n\right)=\frac{h_1^{\mathrm{ct}}\left(n\right)}{h_{0,i}^t\left(n\right)}---\left(13\right)$

${\widetilde{\mathrm{\β}}}_{0,i}^{\mathrm{UL}}\left(n\right)={\mathrm{\β}}_{0,i}^{\mathrm{UL}}\left(n\right)---\left(14\right);$

If communication media is wireless channel, then

${\widetilde{\mathrm{\β}}}_{0,i}^{\mathrm{DL}}\left(n\right)={\mathrm{\β}}_{0,i}^{\mathrm{DL}}\left(n\right)\·{\mathrm{\γ}}_0\left(n\right)=\frac{h_1^{\mathrm{ct}}\left(n\right)h_{\mathrm{Air},01}\left(n\right)}{h_{0,i}^t\left(n\right)}---\left(15\right)$

${\widetilde{\mathrm{\β}}}_{0,i}^{\mathrm{UL}}\left(n\right)={\mathrm{\β}}_{0,i}^{\mathrm{UL}}\left(n\right)---\left(16\right);$

Or can be,

${\widetilde{\mathrm{\β}}}_{0,i}^{\mathrm{DL}}\left(n\right)={\mathrm{\β}}_{0,i}^{\mathrm{DL}}\left(n\right)---\left(17\right)$

${\widetilde{\mathrm{\β}}}_{0,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\β}}_{0,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\γ}}_0\left(n\right)}=\frac{1}{h_0^{\mathrm{ct}}\left(n\right)h_{0,i}^r\left(n\right)h_1^{\mathrm{ct}}\left(n\right)h_0^{\mathrm{cr}}\left(n\right)}---\left(18\right)$

If communication media is wireless channel, then

${\widetilde{\mathrm{\β}}}_{0,i}^{\mathrm{DL}}\left(n\right)={\mathrm{\β}}_{0,i}^{\mathrm{DL}}\left(n\right)---\left(19\right)$

${\widetilde{\mathrm{\β}}}_{0,i}^{\mathrm{UL}}\left(n\right)=\frac{{\mathrm{\β}}_{0,i}^{\mathrm{UL}}\left(n\right)}{{\mathrm{\γ}}_0\left(n\right)}=\frac{1}{h_0^{\mathrm{ct}}\left(n\right)h_{0,i}^r\left(n\right)h_1^{\mathrm{ct}}\left(n\right){h_{\mathrm{Air},01}\left(n\right)h}_0^{\mathrm{cr}}\left(n\right)}---\left(20\right)$

In like manner according to γ₁N () obtainsWith

Adopt the correction coefficient after updating can obtain after being corrected:

$\frac{{\widetilde{\mathrm{\β}}}_{\mathrm{0,0}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{0,0}}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{\mathrm{0,0}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\β}}}_{\mathrm{0,1}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{0,1}}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{\mathrm{0,1}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{0,1}}^t\left(n\right)}=...=\frac{{\widetilde{\mathrm{\β}}}_{0,N_{\mathrm{ANL}}-1}^{\mathrm{UL}}\left(n\right)h_{{0,N}_{\mathrm{ANT}}-1}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right)h_{{0,N}_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{1}{h_0^{\mathrm{ct}}\left(n\right)h_1^{\mathrm{ct}}\left(n\right)}---\left(21\right)$

$\frac{{\widetilde{\mathrm{\β}}}_{\mathrm{1,0}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{1,0}}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{\mathrm{1,0}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\β}}}_{\mathrm{1,1}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{1,1}}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{\mathrm{1,1}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{1,1}}^t\left(n\right)}=...=\frac{{\widetilde{\mathrm{\β}}}_{1,N_{\mathrm{ANL}}-1}^{\mathrm{UL}}\left(n\right)h_{{1,N}_{\mathrm{ANT}}-1}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{{1,N}_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right)h_{{1,N}_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{1}{h_0^{\mathrm{ct}}\left(n\right)h_1^{\mathrm{ct}}\left(n\right)}---\left(22\right)$

If communication media is wireless channel, then

$\frac{{\widetilde{\mathrm{\β}}}_{\mathrm{0,0}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{0,0}}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{\mathrm{0,0}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{0,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\β}}}_{\mathrm{0,1}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{0,1}}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{\mathrm{0,1}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{0,1}}^t\left(n\right)}=...=\frac{{\widetilde{\mathrm{\β}}}_{0,N_{\mathrm{ANL}}-1}^{\mathrm{UL}}\left(n\right)h_{{0,N}_{\mathrm{ANT}}-1}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{0,N_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right)h_{{0,N}_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{1}{h_0^{\mathrm{ct}}\left(n\right){h_{\mathrm{Air},01}\left(n\right)h}_1^{\mathrm{ct}}\left(n\right)}---\left(23\right)$

$\frac{{\widetilde{\mathrm{\β}}}_{\mathrm{1,0}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{1,0}}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{\mathrm{1,0}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{1,0}}^t\left(n\right)}=\frac{{\widetilde{\mathrm{\β}}}_{\mathrm{1,1}}^{\mathrm{UL}}\left(n\right)h_{\mathrm{1,1}}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{\mathrm{1,1}}^{\mathrm{DL}}\left(n\right)h_{\mathrm{1,1}}^t\left(n\right)}=...=\frac{{\widetilde{\mathrm{\β}}}_{1,N_{\mathrm{ANL}}-1}^{\mathrm{UL}}\left(n\right)h_{{1,N}_{\mathrm{ANT}}-1}^r\left(n\right)}{{\widetilde{\mathrm{\β}}}_{{1,N}_{\mathrm{ANT}}-1}^{\mathrm{DL}}\left(n\right)h_{{1,N}_{\mathrm{ANT}}-1}^t\left(n\right)}=\frac{1}{h_0^{\mathrm{ct}}\left(n\right)h_{\mathrm{Air},01}\left(n\right)h_1^{\mathrm{ct}}\left(n\right)}---\left(24\right)$

Now, complete interior correction RRU between joint channel correction, and formula (13) and (14) equal, namely by each service transmission channels transmission after signal identical so that the problem that CoMPJT can be carried out.

The present embodiment provide a kind of interior correction RRU between in radio-frequency channel correction method, the executive agent of the method may include that BBU and interior correction RRU, this interior correction RRU can be shown in above-mentioned Fig. 4 interior correct RRU, as it is shown in figure 9, the method may include that

901, BBU generates correction reference signal；

902, to be corrected reference signal mutual by correcting port and other RRU for interior correction RRU, in order to the interior RRU that corrects carries out associating correction with other RRU.

After adopting such scheme, by arranging the first signal coupling unit, correction port in interior correction RRU, the first signal coupling unit is for carrying out data interaction by correction port with except other RRU, in order to interior correction RRU carries out associating correction with other RRU.So so that interior correction RRU can carry out associating correction by the first signal coupling unit, correction port with other RRU.

The present embodiment provides the method for radio-frequency channel correction between another kind of interior correction RRU, the executive agent of the method may include that BBU and interior correction RRU, this interior correction RRU can for the interior correction RRU shown in above-mentioned Fig. 4, and the method is further expanding the method shown in Fig. 8, as it is shown in figure 9, the method may include that

901, BBU generates correction reference signal.

Further, correction reference signal includes: receives correction reference signal, send out correction reference signal, combine at least one in correction reference signal.

902, to be corrected reference signal mutual by correcting port and other RRU for interior correction RRU, in order to the interior RRU that corrects carries out associating correction with other RRU.

Further, it is corrected reference signal by correction port with other RRU to can be, but not limited to alternately include:

The correction reference signal sent of other RRU except interior correction RRU is received by correcting port.

Further, it is corrected reference signal by correction port with other RRU can also include alternately:

By correcting port, correction reference signal is sent to other RRU.

Further, correction reference signal can be, but not limited to include: receives at least one in correction reference signal, associating correction reference signal.

Further, by correction port, correction reference signal is sent to other RRU to can be, but not limited to include:

Pass sequentially through correction and correction reference signal is sent to other RRU except interior correction RRU with reference to sending out passage, correction port, secondary signal coupling unit and antenna, correction reference signal is coupled into antenna launch, antenna is the antenna reusing certain service channel.

Further, secondary signal coupling unit is positioned at outside correction RRU or is positioned at inner antenna.

Further, the correction reference signal receiving other RRU transmission except interior correction RRU by correcting port may include that

Pass sequentially through antenna, secondary signal coupling unit and correction port and receive other RRU correction reference signal sent and associating correction reference signal.

Further, if correction reference signal is for receiving correction reference signal, then by correction port, correction reference signal is sent to other RRU and includes:

Receipts correction reference signal is passed sequentially through correction with reference to sending out a passage, business is received passage and is transmitted, and also pass sequentially through correction and will receive correction reference signal and send to other RRU with reference to sending out a passage, the first signal coupling unit and correction port.

Further, if correction reference signal is associating correction reference signal, then by correction port, correction reference signal is sent to other RRU and includes:

Associating correction reference signal is passed sequentially through correction and sends to other RRU with reference to sending out passage, the first signal coupling unit and correction port.

Further, correction reference signal can also include: sends out correction reference signal；

If interior correction RRU includes at least two correction port, and correction reference signal is for sending out correction reference signal, then by correction port, correction reference signal is sent to other RRU and includes:

A correction reference signal will be sent out pass sequentially through business and send out passage, correction and be transmitted with reference to receiving passage, and also the business that passes sequentially through will be sent out passage, the first signal coupling unit and correction port and will be sent out correction reference signal and send to other RRU.

Further, by correction port, correction reference signal is sent to other RRU to include quarter:

The receipts correction reference signal received is sent to other RRU by the first correction port any at least two correction port；

The correction reference signal of sending out received only is not sent to other RRU by the second correction port by the first correction port transmission.

After adopting such scheme, by arranging the first signal coupling unit, correction port in interior correction RRU, first signal coupling unit branch/combiner, first signal coupling unit is for by correcting port and except other RRU carry out data interaction, in order to interior correction RRU carries out associating correction with other RRU.So so that interior correction RRU can carry out associating correction by the first signal coupling unit, correction port with other RRU.

The present embodiment provides a kind of method of radio-frequency channel correction between interior correction RRU, and the executive agent of the method may include that BBU and interior correction RRU, and this interior correction RRU can for the interior correction RRU shown in above-mentioned Fig. 5, and as shown in Figure 10, the method may include that

1001, correction reference signal is generated；

1002, it is corrected the mutual of reference signal by the first signal coupling unit, secondary signal coupling unit and any antenna port with other RRU, in order to interior correction RRU carries out associating correction with other RRU.

After adopting such scheme, correction reference signal is sent to other RRU by secondary signal coupling unit and secondary signal coupling unit by arranging in interior correction RRU by any antennal interface, so so that interior correction RRU can carry out associating correction by secondary signal coupling unit with correction RRU in other.

The present embodiment provides the method for radio-frequency channel correction between another kind of interior correction RRU, the executive agent of the method may include that BBU and interior correction RRU, this interior correction RRU can for the interior correction RRU shown in above-mentioned Fig. 5, and the method is further expanding the method shown in Figure 10, it is possible to including:

1001, BBU generates correction reference signal；

1002, it is corrected the mutual of reference signal by the first signal coupling unit, secondary signal coupling unit and any antenna port with other RRU, in order to interior correction RRU carries out associating correction with other RRU.

Further, it is corrected including alternately of reference signal by the first signal coupling unit, secondary signal coupling unit and any antenna port with other RRU:

By the first signal coupling unit, secondary signal coupling unit and any antenna port, correction reference signal is sent to other RRU.

Further, it is corrected including alternately of reference signal by the first signal coupling unit, secondary signal coupling unit and any antenna port with other RRU:

Other RRU correction reference signal sent is received by the first signal coupling unit, secondary signal coupling unit and any antenna port.

Further, correction reference signal may include that at least one in receipts correction reference signal, associating correction reference signal.

Further, by the first signal coupling unit, secondary signal coupling unit and any antenna port, correction reference signal transmission is included to other RRU:

Passing sequentially through correction with reference to sending out passage, the first signal coupling unit and secondary signal coupling unit and any antenna port by correction reference signal transmission to other RRU, the antenna being connected with any antenna port is the antenna reusing certain service channel.

Several example is set forth below, is briefly described combining the method for correction by antenna between RRU:

In Fig. 4 and Fig. 5, the signal of port 0 can be sent to port 1 and/or port 2, and the signal of port 1 and/or port 2 is also sent to port 0 simultaneously, when the signal of port 0 is sent to port 1 and 2, the outlet signal power of port 1 and port 2 can be identical, it is also possible to different.

As an embodiment of the present embodiment, under the scene of the interior correction RRU shown in application drawing 4, as Figure 11 (only lists the structural representation of RRU0, omit RRU1's) shown in, RRU0 and RRU1 can carry out data interaction by antenna, if the quantity that the antennal interface quantity being connected with RRU0 and business transmit/receive passage is identical, now requires over the secondary signal coupling unit being arranged in outside RRU0 and correction is sent out signal transmission extremely any antenna port of channel transfer.The signal of correction channel transfer is sent to any antenna port by Figure 12 by the secondary signal coupling unit being arranged within RRU0.

Further, if the correction port that the port within RRU0 2 connects can consider that leakage signal is gone out, now avoiding the need for the signal coupling unit outside RRU0, TRX (N-1) is directly connected to corresponding antenna port.

Further, as shown in figure 13, it is also possible to the quantity of the receiving port of antenna is set to N+1, signal transmission extremely any antenna port of channel transfer is sent out in correction by the signal coupling unit then passing through the inside being arranged in antenna.So so that correction can be directly connected to antenna with reference to sending out passage.This antenna can be the antenna reusing certain service channel, utilizes this antenna to carry out eating dishes without rice or wine to communicate between RRU, is finally reached the purpose of correction.

After adopting such scheme, correction reference signal is sent to other RRU by secondary signal coupling unit and secondary signal coupling unit by arranging in interior correction RRU by any antennal interface, so so that interior correction RRU can carry out associating correction by secondary signal coupling unit with correction RRU in other.

Providing below some device embodiments, this device embodiment is corresponding with the embodiment of the method that above-mentioned Fig. 8 or Fig. 9 provides.

The present embodiment provides the device of radio-frequency channel correction between a kind of interior correction RRU, as shown in figure 14, it is possible to including:

Correction unit 141, is used for generating correction reference signal, carries out associating correction according to correction reference signal with other RRU except interior correction RRU；

Interactive unit 142, mutual for being corrected reference signal by correction port and other RRU.

After adopting such scheme, correct unit, be used for generating correction reference signal, carry out associating correction according to correction reference signal with other RRU；Interactive unit, mutual for being corrected reference signal by correction port and other RRU.So so that interior correction RRU can carry out associating correction by the first signal coupling unit, correction port with correction RRU in other.

The present embodiment provides the device of radio-frequency channel correction between a kind of interior correction RRU, and the device that the present embodiment provides is further expanding the device shown in Figure 14, as shown in figure 14, it is possible to including:

Correction unit 141, is used for generating correction reference signal, carries out associating correction according to correction reference signal with other RRU except interior correction RRU；

Interactive unit 142, mutual for being corrected reference signal by correction port and other RRU.

Further, interactive unit 142, specifically for passing through to correct port reception other RRU except interior correction RRU correction reference signal sent.

Further, interactive unit 142, specifically for being sent to other RRU by correcting port by correction reference signal.

Further, the correction reference signal that correction unit 141 generates includes: receive at least one in correction reference signal, associating correction reference signal.

Further, interactive unit 142, correction reference signal is sent to other RRU except interior correction RRU with reference to sending out passage, correction port, secondary signal coupling unit and antenna specifically for passing sequentially through correction, correction reference signal is coupled into antenna launch, antenna is the antenna reusing certain service channel.

Further, secondary signal coupling unit is positioned at outside correction RRU or is positioned at inner antenna.

Further, interactive unit 142, specifically for interactive unit, receive other RRU correction reference signal sent and associating correction reference signal specifically for passing sequentially through antenna, secondary signal coupling unit and correction port.

Further, interactive unit 142, specifically for receipts correction reference signal is passed sequentially through correction with reference to sending out a passage, business is received passage and is transmitted, and also pass sequentially through correction and will receive correction reference signal and send to other RRU with reference to sending out a passage, the first signal coupling unit and correction port.

Further, interactive unit 142, if being associating correction reference signal specifically for correction reference signal, then associating correction reference signal is passed sequentially through correction and sends to other RRU with reference to sending out passage, the first signal coupling unit and correction port.

Further, correction reference signal also includes: send out correction reference signal, and interior correction RRU includes at least two correction port；

Interactive unit 142, if specifically for correction reference signal for sending out correction reference signal, then will send out a correction reference signal to pass sequentially through business and send out passage, correction and be transmitted with reference to receiving passage, and also the business that passes sequentially through will be sent out passage, the first signal coupling unit and correction port and will be sent out correction reference signal and send to other RRU.

Further, interactive unit 142, sent to other RRU by the first correction port any at least two correction port specifically for the receipts correction reference signal that will receive；

The correction reference signal of sending out received only is not sent to other RRU by the second correction port by the first correction port transmission.

After adopting such scheme, by arranging the first signal coupling unit, correction port in interior correction RRU, first signal coupling unit branch/combiner, first signal coupling unit is for by correcting port and except other RRU carry out data interaction, in order to interior correction RRU carries out associating correction with other RRU.So so that interior correction RRU can carry out associating correction by the first signal coupling unit, correction port with other RRU.

The present embodiment provides the device of radio-frequency channel correction between a kind of interior correction RRU, as shown in figure 14, it is possible to including:

Correction unit 141, is used for generating correction reference signal, carries out associating correction according to correction reference signal with other RRU except interior correction RRU；

Interactive unit 142, for being corrected the mutual of reference signal by the first signal coupling unit, secondary signal coupling unit and any antenna port with other RRU.

Further, interactive unit 142, specifically for sending correction reference signal to other RRU by the first signal coupling unit, secondary signal coupling unit and any antenna port.

Further, interactive unit 142, specifically for receiving other RRU correction reference signal sent by the first signal coupling unit, secondary signal coupling unit and any antenna port.

Further, correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

Further, interactive unit 142, specifically for passing sequentially through correction with reference to sending out passage, the first signal coupling unit and secondary signal coupling unit and any antenna port by correction reference signal transmission to other RRU, the antenna being connected with any antenna port is the antenna reusing certain service channel.

After adopting such scheme, correction reference signal is sent to other RRU by secondary signal coupling unit and secondary signal coupling unit by arranging in interior correction RRU by any antennal interface, so so that interior correction RRU can carry out associating correction by secondary signal coupling unit with correction RRU in other.

Through the above description of the embodiments, those skilled in the art is it can be understood that can add the mode of required common hardware by software to the present invention and realize, naturally it is also possible to by hardware, but in a lot of situation, the former is embodiment more preferably.Based on such understanding, the part that prior art is contributed by technical scheme substantially in other words can embody with the form of software product, this computer software product is stored in the storage medium that can read, floppy disk such as computer, hard disk or CD etc., including some instructions with so that computer equipment (can be personal computer, server, or the network equipment etc.) method of performing each embodiment of the present invention.

Above; being only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any those familiar with the art is in the technical scope that the invention discloses; change can be readily occurred in or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with scope of the claims.

Claims (49)

1. correction long-distance radio frequency unit RRU in a kind, it is characterized in that, including: the first signal coupling unit, correction port, described first signal coupling unit is for carrying out data interaction by described correction port with other RRU except described interior correction RRU, in order to described interior correction RRU carries out associating correction with other RRU described.

2. interior correction RRU according to claim 1, it is characterised in that described first signal coupling unit is specifically for transmission correction reference signal, and receives the correction reference signal sent of other RRU except described interior correction RRU by described correction port.

3. interior correction RRU according to claim 2, it is characterised in that described first signal coupling unit is specifically for being sent to other RRU described by described correction reference signal by described correction port.

4. interior correction RRU according to claim 3, it is characterised in that described correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

5. interior correction RRU according to claim 4, it is characterized in that, if described correction reference signal is for receiving correction reference signal, then described first signal coupling unit, specifically for receiving by correcting with reference to the receipts correction reference signal sending out channel transfer, and described receipts correction reference signal is sent to other RRU described by described correction port, it is additionally operable to receive passage by business simultaneously and described receipts correction reference signal is sent to BBU.

6. interior correction RRU according to claim 4, it is characterized in that, if described correction reference signal is associating correction reference signal, then described first signal coupling unit, specifically for receiving by correcting with reference to the associating correction reference signal sending out channel transfer, and described associating correction reference signal is sent to other RRU described by described correction port；It is additionally operable to receive associating correction reference signal by described correction port, the associating correction reference signal received is sent to BBU with reference to receipts passage by correcting.

7. interior correction RRU according to claim 4, it is characterised in that described first signal coupling unit includes at least two branch/combiner；

Described interior correction RRU also includes: secondary signal coupling unit, described secondary signal coupling unit includes: electrical switch, described interior correction RRU is used for passing sequentially through described first signal coupling unit and described secondary signal coupling unit and is sent by corresponding correction reference signal to described correction port, is additionally operable to pass sequentially through described secondary signal coupling unit and described first signal coupling unit and sends the described correction reference signal received by described correction port to BBU.

8. interior correction RRU according to claim 4, it is characterised in that described first signal coupling unit includes at least two branch/combiner, and interior correction RRU includes: at least two correction port.

9. interior correction RRU according to claim 8, it is characterised in that described correction reference signal also includes: send out correction reference signal；

Described first signal coupling unit, it is additionally operable to receive BBU and sends out, by business, the correction reference signal that passage sends, described correction reference signal is sent to other RRU described by described correction port, and described correction reference signal is sent to described BBU with reference to receipts passage by correcting.

10. interior correction RRU according to claim 8 or claim 9, it is characterized in that, described first signal coupling unit, corrects any first correction port in port also particularly useful for the receipts correction reference signal that will receive or described associating correction reference signal by described at least two and sends to other RRU described；It is additionally operable to the correction reference signal of sending out received pass through the first correction port and sent only by second correction port transmission extremely other RRU described.

11. the interior correction RRU according to claim 1 to 10 any one, it is characterised in that described interior correction RRU by described correction port and utilizes the correction port of communication media and other RRU described to communicate.

12. correct long-distance radio frequency unit RRU in one kind, it is characterized in that, including: the first signal coupling unit, secondary signal coupling unit, described first signal coupling unit is for carrying out data interaction by described secondary signal coupling unit with other RRU except described interior correction RRU, in order to described interior correction RRU carries out associating correction with other RRU described.

13. interior correction RRU according to claim 12, it is characterized in that, described first signal coupling unit will be specifically for correcting reference signal transmission extremely described secondary signal coupling unit, described secondary signal coupling unit is for transmitting described correction reference signal to any antenna port place, and is sent described correction reference signal to other RRU described by described any antenna port.

14. interior correction RRU according to claim 13, it is characterised in that described first signal coupling unit is also particularly useful for passing sequentially through described any antenna port and the correction reference signal of described other RRU transmission of described secondary signal coupling unit reception.

15. interior correction RRU according to claim 14, it is characterised in that described correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

16. interior correction RRU according to claim 15, it is characterized in that, if described correction reference signal is for receiving correction reference signal, then described first signal coupling unit, specifically for receiving by correcting with reference to the receipts correction reference signal sending out channel transfer, and described receipts correction reference signal is sent to other RRU described by described secondary signal coupling unit and described any antenna port, it is additionally operable to receive passage by business and described receipts correction reference signal is sent to BBU.

17. interior correction RRU according to claim 15, it is characterized in that, if described correction reference signal is associating correction reference signal, then described first signal coupling unit, specifically for receiving by correcting with reference to the associating correction reference signal sending out channel transfer, and described associating correction reference signal is sent to other RRU described by described secondary signal coupling unit and described any antenna port；It is additionally operable to pass sequentially through described any antenna port and described secondary signal coupling unit reception associating correction reference signal, and by the associating correction reference signal received by correcting with reference to receipts passage transmission to BBU.

18. correct the method for radio-frequency channel correction between RRU in one kind, it is characterised in that be applied in the interior correction RRU described in claim 1 to 11 any one；

Described method includes:

Generate correction reference signal；

Described correction reference signal is carried out mutual, in order to described interior correction RRU carries out associating correction with other RRU described by described correction port and other RRU described.

19. the method for radio-frequency channel correction between interior correction RRU according to claim 18, it is characterised in that described carry out described correction reference signal by described correction port and other RRU described and include alternately:

The correction reference signal sent of other RRU except described interior correction RRU is received by described correction port.

20. the method for radio-frequency channel correction between interior correction RRU according to claim 19, it is characterised in that described carry out described correction reference signal by described correction port and other RRU described and also include alternately:

By described correction port, described correction reference signal is sent to other RRU described.

21. the method for radio-frequency channel correction between interior correction RRU according to claim 20, it is characterised in that described correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

22. the method for radio-frequency channel correction between interior correction RRU according to claim 21, it is characterised in that described by described correction port, described correction reference signal is sent to other RRU described includes:

Pass sequentially through correction and described correction reference signal is sent to other RRU except described interior correction RRU with reference to sending out passage, described correction port, secondary signal coupling unit and antenna, described correction reference signal is coupled into described antenna launch, described antenna is the antenna reusing certain service channel.

23. the method for radio-frequency channel correction between interior correction RRU according to claim 22, it is characterised in that described secondary signal coupling unit is positioned at other RRU described or is positioned at described inner antenna.

24. the method for radio-frequency channel correction between interior correction RRU according to claim 23, it is characterised in that the correction reference signal that described other RRU by the reception of described correction port except described interior correction RRU send includes:

Pass sequentially through described antenna, described secondary signal coupling unit and described correction port and receive other RRU described correction reference signal sent and associating correction reference signal.

25. the method for radio-frequency channel correction between interior correction RRU according to claim 24, it is characterized in that, if described correction reference signal is for receiving correction reference signal, then by described correction port, described correction reference signal is sent to other RRU described described in and includes:

Described receipts correction reference signal passes sequentially through correction receive passage be transmitted with reference to a passage, business, and also pass sequentially through described correction with reference to sending out passage, described first signal coupling unit and described correction port by described receipts correction reference signal transmission to other RRU described.

26. the method for radio-frequency channel correction between interior correction RRU according to claim 25, it is characterized in that, if described correction reference signal is associating correction reference signal, then by described correction port, described correction reference signal is sent to other RRU described described in and includes:

Described associating correction reference signal is passed sequentially through correction and sends to other RRU described with reference to sending out passage, described first signal coupling unit and described correction port.

27. the method for radio-frequency channel correction between interior correction RRU according to claim 26, it is characterised in that described correction reference signal also includes: send out correction reference signal；

If described interior correction RRU includes at least two correction port, and described correction reference signal is for sending out correction reference signal, then by described correction port, described correction reference signal is sent to other RRU described described in and includes:

The business that passed sequentially through by described correction reference signal is sent out passage, correction and is transmitted with reference to receiving passage, and also passes sequentially through described business and send out passage, described first signal coupling unit and described correction port described correction reference signal is sent extremely other RRU described.

28. the method for radio-frequency channel correction between interior correction RRU according to claim 27, it is characterised in that described by described correction port, described correction reference signal is sent to other RRU described includes:

By described at least two, the described receipts correction reference signal received is corrected any first correction port in port send to other RRU described；

Do not sent by described first correction port only sent sending out correction reference signal described in receiving to other RRU described by the second correction port.

29. correct the method for radio-frequency channel correction between RRU in one kind, it is characterised in that in the interior correction RRU being applied in claim 12 to 17 described in any one；

Described method includes:

Generate correction reference signal；

It is corrected the mutual of reference signal with other RRU described, in order to described interior correction RRU carries out associating correction with other RRU described by described first signal coupling unit, described secondary signal coupling unit and any antenna port.

30. the method for radio-frequency channel correction between interior correction RRU according to claim 29, it is characterized in that, described by described first signal coupling unit, described secondary signal coupling unit and arbitrarily antenna port and other RRU described be corrected including alternately of reference signal:

By described first signal coupling unit, described secondary signal coupling unit and any antenna port, described correction reference signal is sent to other RRU described.

31. the method for radio-frequency channel correction between interior correction RRU according to claim 30, it is characterized in that, described by described first signal coupling unit, described secondary signal coupling unit and arbitrarily antenna port and other RRU described be corrected including alternately of reference signal:

Correction reference signal by described first signal coupling unit, described secondary signal coupling unit and arbitrarily described other RRU transmission of antenna port reception.

32. the method for radio-frequency channel correction between interior correction RRU according to claim 31, it is characterised in that described correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

33. the method for radio-frequency channel correction between interior correction RRU according to claim 32, it is characterized in that, described by described first signal coupling unit, described secondary signal coupling unit and arbitrarily antenna port described correction reference signal sent to other RRU described and includes:

Passing sequentially through correction with reference to sending out passage, described first signal coupling unit and described secondary signal coupling unit and any antenna port by the transmission of described correction reference signal to other RRU described, the antenna being connected with described any antenna port is the antenna reusing certain service channel.

34. correct the device of radio-frequency channel correction between RRU in one kind, it is characterised in that including:

Correction unit, is used for generating correction reference signal, carries out associating correction according to described correction reference signal with other RRU except described interior correction RRU；

Interactive unit, mutual for carrying out described correction reference signal by the correction port of described interior correction RRU and other RRU described.

35. the device of radio-frequency channel correction between interior correction RRU according to claim 34, it is characterised in that described interactive unit, specifically for receiving the correction reference signal sent of other RRU except described interior correction RRU by described correction port.

36. the device of radio-frequency channel correction between interior correction RRU according to claim 35, it is characterised in that described interactive unit, specifically for being sent to other RRU described by described correction port by described correction reference signal.

37. the device of radio-frequency channel correction between interior correction RRU according to claim 36, it is characterised in that the correction reference signal that described correction unit generates includes: receive at least one in correction reference signal, associating correction reference signal.

38. the device of radio-frequency channel correction between the interior correction RRU according to claim 37, it is characterized in that, described interactive unit, described correction reference signal is sent to other RRU except described interior correction RRU with reference to sending out passage, described correction port, secondary signal coupling unit and antenna specifically for passing sequentially through correction, described correction reference signal is coupled into described antenna launch, described antenna is the antenna reusing certain service channel.

39. the device of radio-frequency channel correction between the interior correction RRU according to claim 38, it is characterised in that described secondary signal coupling unit is positioned at other RRU described or is positioned at described inner antenna.

40. the device of radio-frequency channel correction between the interior correction RRU according to claim 39, it is characterized in that, described interactive unit, receives other RRU described correction reference signal sent and associating correction reference signal specifically for passing sequentially through described antenna, described secondary signal coupling unit and described correction port.

41. the device of radio-frequency channel correction between interior correction RRU according to claim 40, it is characterized in that, described interactive unit, it is transmitted with reference to a passage, business receipts passage specifically for described receipts correction reference signal being passed sequentially through described correction, and also passes sequentially through described correction with reference to sending out passage, described interior the first signal coupling unit correcting RRU and described correction port by described receipts correction reference signal transmission to other RRU described.

42. the device of radio-frequency channel correction between interior correction RRU according to claim 41, it is characterized in that, described interactive unit, if being associating correction reference signal specifically for described correction reference signal, then described associating correction reference signal is passed sequentially through described correction and sends to other RRU described with reference to sending out passage, described first signal coupling unit and described correction port.

43. the device of radio-frequency channel correction between interior correction RRU according to claim 42, it is characterised in that described correction reference signal also includes: sending out correction reference signal, described interior correction RRU includes at least two correction port；

Described interactive unit, if specifically for described correction reference signal for sending out correction reference signal, the business that then passed sequentially through by described correction reference signal is sent out passage, correction and is transmitted with reference to receiving passage, and also passes sequentially through described business and send out passage, described first signal coupling unit and described correction port described correction reference signal is sent extremely other RRU described.

44. the device of radio-frequency channel correction between interior correction RRU according to claim 43, it is characterized in that, described interactive unit, the described receipts correction reference signal specifically for receiving corrects any first correction port in port by described at least two and sends to other RRU described；

Do not sent by described first correction port only sent sending out correction reference signal described in receiving to other RRU described by the second correction port.

45. correct the device of radio-frequency channel correction between RRU in one kind, it is characterised in that including:

Correction unit, is used for generating correction reference signal, carries out associating correction according to described correction reference signal with other RRU except described interior correction RRU；

Interactive unit, for being corrected the mutual of reference signal by the first signal coupling unit of described interior correction RRU, the described interior secondary signal coupling unit correcting RRU and any antenna port with other RRU described.

46. the device of radio-frequency channel correction between interior correction RRU according to claim 45, it is characterized in that, described interactive unit, specifically for sending described correction reference signal to other RRU described by described first signal coupling unit, described secondary signal coupling unit and any antenna port.

47. the device of radio-frequency channel correction between interior correction RRU according to claim 46, it is characterized in that, described interactive unit, specifically for the correction reference signal by described first signal coupling unit, described secondary signal coupling unit and arbitrarily described other RRU transmission of antenna port reception.

48. the device of radio-frequency channel correction between interior correction RRU according to claim 47, it is characterised in that described correction reference signal includes: receive at least one in correction reference signal, associating correction reference signal.

49. the device of radio-frequency channel correction between interior correction RRU according to claim 48, it is characterized in that, described interactive unit, specifically for passing sequentially through correction with reference to sending out passage, described first signal coupling unit and described secondary signal coupling unit and any antenna port by the transmission of described correction reference signal to other RRU described, the antenna being connected with described any antenna port is the antenna reusing certain service channel.