CN105207723B

CN105207723B - channel correcting method, base station, user equipment and communication system

Info

Publication number: CN105207723B
Application number: CN201410309464.0A
Authority: CN
Inventors: 易雄书; 吴秀峰
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2014-06-30
Filing date: 2014-06-30
Publication date: 2018-03-06
Anticipated expiration: 2034-06-30
Also published as: CN105207723A

Abstract

The embodiments of the invention provide a kind of channel correcting method, base station, user equipment and communication system, this method includes：First base station sends MDT triggering commands to UE, and measurement item indicating bit is included in the MDT triggering commands, and the measurement item indicating bit is used to indicate that the UE is measured and fed back the descending channel information of at least one cell；First base station receives the MDT message of UE feedbacks, and the MDT message carries the descending channel information of at least one cell of UE measurements；First base station is according to the descending channel informations of the UE at least one cells measured, realize the channel correcting to the transceiver channel corresponding at least one cell of UE measurements so that the ratio for receiving channel response and hair channel response after the correction of the same subcarrier of synchronization after the correction of the same subcarrier of synchronization per transceiver channel all the way in any of at least one cell cell is equal or approximately equal.

Description

Channel correcting method, base station, user equipment and communication system

Technical field

The present embodiments relate to the communications field, and more particularly, to a kind of channel correcting method, base station, user Equipment and communication system.

Background technology

In communication system, array gain utilizes the coherent superposition of multiple signals, and then greatly improves the receiving power of signal, Improve systematic function.

Because the acquisition for the effect that is concerned with depends on the acquisition of complete channel information, time division duplex (Time Division Duplexing, TDD) system obtains complete channel information using the reciprocity for up-downgoing channel of eating dishes without rice or wine, such as utilize up reference The channel response of signal obtains down channel feature.

But complete wireless access include antenna subsystem, middle radio frequency (Intermediate Ratio Frequency, IRF) subsystem and baseband subsystems, the channel characteristics that final base band obtains will include channel response of eating dishes without rice or wine, antenna feeder and transmitting-receiving letter Machine (TRX, Transceiver) channel response, now the receiving channel response due to TRX and transmission channel respond nonreciprocal Property, and the ratio corresponding to multiple TRX between receiving channel and the channel response of transmission channel is not consistent, will be unable to ensure UE Side can obtain the array gain that coherent superposition is brought on each subcarrier, or even be also possible to bring the effect of signal cancellation, Reduce systematic function.

The content of the invention

The embodiment of the present invention provides a kind of channel correcting method, base station, user equipment and communication system so that communication system The array gain that multiple antennas coherent superposition is brought in cell can be obtained, improves the performance of the multi-point joint transmission of communication system.

First aspect, there is provided a kind of channel correcting method based on minimum drive test information auxiliary, this method include：First Base station sends MDT triggering commands to UE, and measurement item indicating bit is included in the MDT triggering commands, and the measurement item indicating bit is used to refer to Show that the UE is measured and fed back the descending channel information of at least one cell；First base station receives the MDT message of UE feedbacks, should MDT message carries the descending channel information of at least one cell of UE measurements；First base station measured according to the UE at least one The descending channel information of individual cell, the channel correcting to the transceiver channel corresponding at least one cell of UE measurements is realized, is made Obtain being received per transceiver channel all the way after the correction of the same subcarrier of synchronization in any of at least one cell cell Channel response is equal or approximately equal with sending out the ratio of channel response after the correction of the same subcarrier of synchronization.

With reference at least one cell institute that in a first aspect, in the first possible implementation, the realization is measured UE The channel correcting of corresponding transceiver channel also includes：So that any two joint sends the cell of signal at least one cell Transceiver channel the correction of channel response and the same subcarrier of synchronization is received after the correction of the same subcarrier of synchronization after The ratio of hair channel response is equal or approximately equal.

With reference to the possible implementation of the first of first aspect or first aspect, in second of possible implementation In, the measurement item indicating bit is used to indicate that the UE is measured and fed back the downlink channel response of at least one cell, UE measurements First community at least one cell is the cell of first base station administration, and the MDT message carries the down channel of first community Response,

This method also includes：First base station obtains the up channel response of first community；

First base station is led to according to the descending channel information of first community to first base station in the transmitting-receiving corresponding to first community Road, which carries out channel correcting, to be included：First base station responds according to the downlink channel response and up channel of first community, to the first base Stand and carry out channel correcting in the transceiver channel corresponding to first community.

With reference to second of possible implementation of first aspect, in the third possible implementation, first community Downlink channel response include：First base station is in the descending pilot frequency at least launched all the way on transmission channel corresponding to first community Signal reaches the first downlink frequency domain channel response during the receiving channel of the UE；

The up channel response of first community includes：It is small first that the uplink pilot signal of first community reaches first base station Corresponding to area at least all the way receiving channel when the first up domain channel response, wherein, first base station is in first community institute It is corresponding at least all the way receiving channel and first base station corresponding to first community at least transmission channel corresponds all the way；

First base station responds according to the downlink channel response and up channel of first community, to first base station in first community Corresponding transceiver channel, which carries out channel correcting, to be included：First base station according to the first downlink frequency domain channel response and this on first Row domain channel response, channel correcting is carried out in the transceiver channel corresponding to first community to first base station；

Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase information, and this first Up domain channel response includes amplitude and phase information or only includes phase information.

With reference to second of possible implementation of first aspect, in the 4th kind of possible implementation, first community Downlink channel response include：First base station is in the descending pilot frequency at least launched all the way on transmission channel corresponding to first community The first downlink frequency domain channel response and first when signal reaches the receiving channel of the UE specify the ratio between parameter；

The up channel response of first community includes：It is small first that the uplink pilot signal of first community reaches first base station Corresponding to area at least all the way the first of receiving channel the up domain channel response and second specify parameter between ratio, its In, first base station corresponding to first community at least all the way receiving channel and first base station corresponding to first community at least Transmission channel corresponds all the way；

First base station responds according to the downlink channel response and up channel of first community, to first base station in first community Corresponding transceiver channel, which carries out channel correcting, to be included：First base station is according to the first downlink frequency domain channel response and first finger The ratio between the ratio between parameter, and the first up domain channel response and the second specified parameter is determined, to first Base station carries out channel correcting in the transceiver channel corresponding to first community；

Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase information, and this first Up domain channel response includes amplitude and phase information or only includes phase information, and the first specified parameter is first community Downlink frequency domain channel response corresponding to transmission channel is specified in downlink frequency domain channel response, the second specified parameter is first community Up domain channel response in specify receiving channel corresponding to up domain channel response, this specify receiving channel with this specify Transmission channel is corresponding.

With reference to second of possible implementation of first aspect, in the 5th kind of possible implementation, first community Downlink channel response include：First base station is in the descending pilot frequency at least launched all the way on transmission channel corresponding to first community Signal reaches the first descending time domain channel response during the receiving channel of the UE,

This method also includes：The first descending time domain channel response is converted into the first downlink frequency domain channel and rung by first base station Should；

Wherein, the first downlink frequency domain channel response and the first descending time domain channel response include amplitude and phase is believed Breath, the first up domain channel response include amplitude and phase information or only include phase information.

With reference to the possible implementation of the first of first aspect or first aspect, in the 6th kind of possible implementation In, the measurement item indicating bit is used to indicate that the UE is measured and fed back the downlink channel response of at least one cell, UE measurements Second community at least one cell is the cell of the second base station administration, and the second base station and first base station are not same bases To stand, the MDT message carries the downlink channel response of second community,

First base station realizes at least one to UE measurements according to the descending channel information of the UE at least one cells measured The channel correcting of the transmission channel of individual cell includes：

First base station sends the downlink channel response of second community to the second base station, so that the second base station exists to the second base station Transceiver channel corresponding to second community carries out channel correcting.

With reference to the possible implementation of the first of first aspect or first aspect, in the 7th kind of possible implementation In, the measurement item indicating bit is used to indicate that the UE is measured and fed back between at least one neighbor cell and the serving cell of the UE Down channel phase difference, the MDT message carry the down channel phase difference between the serving cell of the UE and first community, and first Cell is the neighbor cell of the UE, and first community belongs to the cell of first base station administration,

First base station realizes at least one to UE measurements according to the descending channel information of the UE at least one cells measured The channel correcting of transceiver channel corresponding to individual cell includes：

First base station determines serving cell according to the down channel phase difference between the serving cell and first community of the UE BF weights and first community BF weights；

First base station carries out wave beam forming according to the BF weights of serving cell to the transmission channel corresponding to serving cell, and Wave beam forming is carried out to the transmission channel corresponding to first community according to the BF weights of first community；

First base station is led to according to the wave beam forming result of serving cell and first community to the transmitting corresponding to serving cell Transmission channel corresponding to road and first community carries out channel correcting.

With reference to the possible implementation of the first of first aspect or first aspect, in the 8th kind of possible implementation In, the measurement item indicating bit is used to indicate that the UE is measured and fed back between at least one neighbor cell and the serving cell of the UE Down channel phase difference, the MDT message carry the down channel phase difference between the serving cell of the UE and second community, and second Cell is the neighbor cell of the UE, and second community belongs to the cell of the second base station administration, and the second base station is not with first base station Same base station,

First base station carries out wave beam forming according to the BF weights of serving cell to the transmission channel corresponding to serving cell, and According to the wave beam forming result of serving cell, channel correcting is carried out to the transmission channel corresponding to serving cell；And/or

First base station sends the down channel phase difference between the serving cell of the UE and second community to the second base station, with Just the second base station determines the BF weights of second community, to the transmission channel progress wave beam forming corresponding to second community, and according to The wave beam forming result of second community, channel correcting is carried out to the transmission channel corresponding to second community.

Second aspect, there is provided a kind of channel correcting method based on minimum drive test information auxiliary, this method include：UE connects The MDT triggering commands that first base station is sent are received, to administer the base station of the serving cell of the UE, the MDT is triggered wherein first base station Measurement item indicating bit is included in instruction, the measurement item indicating bit is used to indicate that the UE is measured and fed back the descending of at least one cell Channel information；Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain at least one small of the UE The descending channel information in area；The UE sends MDT message to first base station, wherein, the MDT message carries at least one small of the UE The descending channel information in area, so that first base station is according to the descending channel information of the UE, realize the receipts at least one cell Send out the channel correcting of passage so that same in synchronization per transceiver channel all the way in any of at least one cell cell It is equal with the ratio that channel response is sent out after the correction of the same subcarrier of synchronization that channel response is received after the correction of one subcarrier.

With reference to second aspect, in the first possible implementation, the transceiver channel at least one cell is realized Channel correcting also include：So that any two joint sends the transceiver channel of the cell of signal same at least one cell Channel response is received after the correction of one moment same subcarrier with sending out the ratio of channel response after the correction of the same subcarrier of synchronization It is worth equal.

With reference to the possible implementation of the first of second aspect or second aspect, in second of possible implementation In, the measurement item indicating bit in the MDT triggering commands is used to indicate that the UE is measured and fed back the down channel of at least one cell Response；

Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain the descending channel information bag of the UE Include：Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain the down channel of at least one cell Response；

The MDT message carries the downlink channel response of one or more of at least one cell cell, so as to first Base station is carried out according to the downlink channel response of one or more cells to the transceiver channel corresponding to one or more cells Channel correcting.

With reference to second of possible implementation of second aspect, in the third possible implementation, the descending letter Road response is downlink frequency domain channel response, and measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain The downlink channel response of at least one cell includes：Measurement item indicating bits of the UE in the MDT triggering commands measures To obtain the downlink frequency domain channel response of at least one cell.

With reference to second of possible implementation of second aspect, in the 4th kind of possible implementation, the descending letter Road response is descending time domain channel response,

Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain the descending of at least one cell Channel response includes：Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain at least one cell Downlink frequency domain channel response；The downlink frequency domain channel response is converted into descending time domain channel response by the UE.

With reference to the possible implementation of the first of second aspect or second aspect, in the 5th kind of possible implementation Measurement item indicating bit in the MDT triggering commands is used to indicate that the UE is measured and fed back the clothes of at least one neighbor cell and the UE Down channel phase difference between cell of being engaged in；

Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain the descending channel information of the UE Including：Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain at least one adjacent small of the UE Down channel phase difference between area and the serving cell of the UE；

The MDT message carry one or more neighbor cells and the UE at least one neighbor cell serving cell it Between down channel phase difference, so that first base station is according between one or more neighbor cells and the serving cell of the UE Down channel phase difference, it is right to the transceiver channel corresponding to one or more neighbor cells, and the serving cell institute of the UE The transceiver channel answered carries out channel correcting.

The third aspect, there is provided a kind of base station, the base station include：Transmitting element, for sending MDT triggering commands to UE, Measurement item indicating bit is included in the MDT triggering commands, the measurement item indicating bit is used to indicate that the UE is measured and fed back at least one The descending channel information of cell；Receiving unit, for receiving the MDT message of UE feedbacks, the MDT message carries UE measurements The descending channel information of at least one cell；Channel correction unit, for the descending of at least one cell for being measured according to the UE Channel information, realize the channel correcting to the transceiver channel corresponding at least one cell of UE measurements so that this at least one In any of individual cell cell is received per transceiver channel all the way after the correction of the same subcarrier of synchronization channel response and The ratio that channel response is sent out after the correction of the same subcarrier of synchronization is equal or approximately equal.

With reference to the third aspect, in the first possible implementation, at least one small for being measured according to the UE The descending channel information in area, realize the process of the channel correcting to the transceiver channel corresponding at least one cell of UE measurements In, the channel correction unit is additionally operable to so that the transmitting-receiving for the cell that any two joint sends signal is led at least one cell Channel response is received after the correction of the same subcarrier of synchronization and is rung with sending out passage after the correction of the same subcarrier of synchronization in road The ratio answered is equal.

With reference in the possible implementation of the first of the third aspect or the third aspect, in second of possible implementation In, the measurement item indicating bit is used to indicate that the UE is measured and fed back the downlink channel response of at least one cell, UE measurements First community at least one cell is the cell of base station administration, and the down channel that the MDT message carries first community rings Should,

The base station also includes acquiring unit, and the up channel for obtaining first community responds；

The channel correction unit is specifically used for being responded according to the downlink channel response and up channel of first community, to the base Stand and carry out channel correcting in the transceiver channel corresponding to first community.

With reference to second of possible implementation of the third aspect, in the third possible implementation, first community Downlink channel response include：The base station is in the descending pilot frequency at least launched all the way on the transmission channel letter corresponding to first community Number reach the first downlink frequency domain channel response during the receiving channel of the UE；

The up channel response of first community includes：The uplink pilot signal of first community reaches the base station in first community It is corresponding at least all the way receiving channel when the first up domain channel response, wherein, the base station is corresponding to first community At least all the way receiving channel and the base station corresponding to first community at least transmission channel corresponds all the way；

Responded for the downlink channel response according to first community and up channel, it is right in first community institute to the base station During the transceiver channel answered carries out channel correcting, the channel correction unit is specifically used for：The base station is first descending according to this Domain channel response and the first up domain channel response, lead to the base station in the transceiver channel corresponding to first community Channel correction；

With reference in the possible implementation of the first of the third aspect or the third aspect, in the 4th kind of possible implementation In, the downlink channel response of first community includes：The base station on transmission channel at least launching corresponding to first community all the way First downlink frequency domain channel response and first of the down-bound pilot frequency signal when reaching the receiving channel of the UE specify between parameter Ratio；

The up channel response of first community includes：The uplink pilot signal of first community reaches the base station in first community It is corresponding that at least the first of receiving channel the up domain channel response and second specifies ratio between parameter all the way, wherein, The base station corresponding to first community at least all the way receiving channel and the base station corresponding to first community at least riches all the way Penetrate passage one-to-one corresponding；

The channel correction unit is specifically used for：According between the first downlink frequency domain channel response and the first specified parameter Ratio, and the first up domain channel response and this second specify parameter between ratio, it is small first to the base station Transceiver channel corresponding to area carries out channel correcting；

With reference in the possible implementation of the first of the third aspect or the third aspect, in the 5th kind of possible implementation In, the downlink channel response of first community includes：The base station on transmission channel at least launching corresponding to first community all the way First descending time domain channel response of down-bound pilot frequency signal when reaching the receiving channel of the UE,

The base station also includes time-frequency domain converting unit, descending for the first descending time domain channel response to be converted into first Domain channel response；

The channel correction unit is specifically used for：According to the first downlink frequency domain channel response and the first up frequency domain channel Response, channel correcting is carried out in the transceiver channel corresponding to first community to the base station；

With reference to the possible implementation of the first of the third aspect or the third aspect, in the 6th kind of possible implementation In, the measurement item indicating bit is used to indicate that the UE is measured and fed back the downlink channel response of at least one cell, UE measurements Second community at least one cell is the cell of the second base station administration, and the second base station and the base station are not same base stations, The MDT message carries the downlink channel response of second community,

The channel correction unit is specifically used for：The down channel of second community is sent to the second base station by the transmitting element Response, so that the second base station carries out channel correcting to the second base station in the transceiver channel corresponding to second community.

With reference to the possible implementation of the first of the third aspect or the third aspect, in the 7th kind of possible implementation In, the measurement item indicating bit is used to indicate that the UE is measured and fed back between at least one neighbor cell and the serving cell of the UE Down channel phase difference, the MDT message carry the down channel phase difference between the serving cell of the UE and first community, and first Cell is the neighbor cell of the UE, and first community belongs to the cell of base station administration,

The channel correction unit is specifically used for：According to the down channel phase between the serving cell of the UE and first community Difference, determine the BF weights of serving cell and the BF weights of first community；It is right to serving cell institute according to the BF weights of serving cell The transmission channel answered carries out wave beam forming, and the transmission channel corresponding to first community is carried out according to the BF weights of first community Wave beam forming；According to the wave beam forming result of serving cell and first community to the transmission channel corresponding to serving cell and first Transmission channel corresponding to cell carries out channel correcting.

With reference to the possible implementation of the first of the third aspect or the third aspect, in the 8th kind of possible implementation In, the measurement item indicating bit is used to indicate that the UE is measured and fed back between at least one neighbor cell and the serving cell of the UE Down channel phase difference, the MDT message carry the down channel phase difference between the serving cell of the UE and second community, and second Cell is the neighbor cell of the UE, and second community belongs to the cell of the second base station administration, and the second base station is not same with the base station One base station, the channel correction unit are specifically used for：

Wave beam forming is carried out to the transmission channel corresponding to serving cell according to the BF weights of serving cell, and according to service The wave beam forming result of cell, channel correcting is carried out to the transmission channel corresponding to serving cell；And/or

The down channel phase between the serving cell of the UE and second community is sent to the second base station by the transmitting element Potential difference, so that the second base station determines the BF weights of second community, wave beam forming is carried out to the transmission channel corresponding to second community, And according to the wave beam forming result of second community, channel correcting is carried out to the transmission channel corresponding to second community.

Fourth aspect, there is provided a kind of user equipment, the user equipment include：Receiving unit, for receiving first base station The MDT triggering commands of transmission, wherein first base station include to administer the base station of the serving cell of the UE in the MDT triggering commands Measurement item indicating bit, the measurement item indicating bit are used to indicate that the user equipment measures and feeds back the down channel of at least one cell Information；Acquiring unit, measured for the measurement item indicating bit in the MDT triggering commands to obtain the user equipment The descending channel information of at least one cell；Transmitting element, for sending MDT message to first base station, wherein, the MDT message The descending channel information of at least one cell of the user equipment is carried, so that first base station is according to the descending letter of the user equipment Road information, realize the channel correcting of the transceiver channel at least one cell.

With reference to fourth aspect, in the first possible implementation, transmitting-receiving of the realization at least one cell is led to The channel correcting in road also includes：So that the transceiver channel for the cell that any two joint sends signal exists at least one cell The receipts channel response of the same subcarrier of synchronization after channel response correction is sent out after correction with receiving passage after the correction of synchronization Respond equal with the ratio that channel response is sent out after the correction of the same subcarrier of synchronization.

With reference to the possible implementation of the first of fourth aspect or fourth aspect, in second of possible implementation In, the measurement item indicating bit in the MDT triggering commands is used to indicate that the user equipment is measured and fed back under at least one cell Row channel response；

The measurement item indicating bit that the acquiring unit is specifically used in the MDT triggering commands is measured to obtain the use The descending channel information of family equipment includes：Measurement item indicating bit in the MDT triggering commands is measured to obtain at least The downlink channel response of one cell；

Wherein, the MDT message carries the downlink channel response of one or more of at least one cell cell, so as to First base station is according to the downlink channel responses of one or more cells, to the transceiver channel corresponding to one or more cells Carry out channel correcting.

With reference to second of possible implementation of fourth aspect, in the third possible implementation, the descending letter Road response is downlink frequency domain channel response,

The measurement item indicating bit that the acquiring unit is specifically used in the MDT triggering commands is measured to obtain at least The downlink frequency domain channel response of one cell.

With reference to second of possible implementation of fourth aspect, in the 4th kind of possible implementation, the descending letter Road response is descending time domain channel response,

The acquiring unit is specifically used for：Measurement item indicating bit in the MDT triggering commands is measured to obtain extremely The downlink frequency domain channel response of a few cell, and the downlink frequency domain channel response is converted into descending time domain channel response.

With reference to the possible implementation of the first of fourth aspect or fourth aspect, in the 5th kind of possible implementation In, the measurement item indicating bit in the MDT triggering commands is used to indicate that the user equipment measures and feeds back at least one neighbor cell Down channel phase difference between the serving cell of the user equipment；

The acquiring unit is specifically used for：Measurement item indicating bit in the MDT triggering commands measures to be somebody's turn to do with obtaining Down channel phase difference between at least one neighbor cell of user equipment and the serving cell of the user equipment；

Wherein, the MDT message carries one or more neighbor cells and the user equipment at least one neighbor cell Serving cell between down channel phase difference, so that first base station is set according to one or more neighbor cells with the user Down channel phase difference between standby serving cell, to the transceiver channel corresponding to one or more neighbor cells, and Transceiver channel corresponding to the serving cell of the user equipment carries out channel correcting.

5th aspect, there is provided a kind of communication system, the system include：The first of the third aspect or the third aspect may Base station of the implementation into the 8th kind of possible implementation of the third aspect in any possible implementation, or The first possible implementation of four aspects or fourth aspect is any into the 5th kind of possible implementation of fourth aspect User equipment in the possible implementation of kind.

Based on above technical scheme, channel correcting method, base station, user equipment and the communication system of the embodiment of the present invention, Base station by MDT triggering commands indicate UE feedback of down channel information, and according to UE feed back at least one cell under Row channel information, realize the channel correcting to the transceiver channel (reception and transmission channel) of at least one cell so that cell After interior transceiver channel receives the correction of channel response and the same subcarrier of synchronization after the correction of the same subcarrier of synchronization The ratio of hair channel response is equal or approximately equal, so that communication system can obtain multichannel coherent superposition band in cell The array gain come, improve the performance of the multi-point joint transmission of communication system.

Brief description of the drawings

In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be in embodiment or description of the prior art The required accompanying drawing used is briefly described, it should be apparent that, drawings in the following description are only some realities of the present invention Example is applied, for those of ordinary skill in the art, on the premise of not paying creative work, can also be according to these accompanying drawings Obtain other accompanying drawings.

Fig. 1 is an application scenarios schematic diagram of the embodiment of the present invention.

Fig. 2 is the method flow diagram of channel correcting of the embodiment of the present invention.

Fig. 3 is the interaction diagrams of channel correcting of the embodiment of the present invention.

Fig. 4 is another interaction diagrams of channel correcting of the embodiment of the present invention.

Fig. 5 is another interaction diagrams of channel correcting of the embodiment of the present invention.

Fig. 6 is another interaction diagrams of channel correcting of the embodiment of the present invention.

Fig. 7 is another interaction diagrams of channel correcting of the embodiment of the present invention.

Fig. 8 is another interaction diagrams of channel correcting of the embodiment of the present invention.

Fig. 9 is the another method flow chart of channel correcting of the embodiment of the present invention.

Figure 10 is the structural representation of base station of the embodiment of the present invention.

Figure 11 is the structural representation of user equipment of the embodiment of the present invention.

Figure 12 is another structural representation of base station of the embodiment of the present invention.

Figure 13 is another structural representation of user equipment of the embodiment of the present invention.

Figure 14 is the structural representation of communication system of the embodiment of the present invention.

Embodiment

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 carried out clear, complete Site preparation describes, it is clear that described embodiment is part of the embodiment of the present invention, rather than whole embodiments.Based on this hair Embodiment in bright, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made Example, belongs to the scope of protection of the invention.

To facilitate understanding of the present embodiment of the invention, introduced first at this embodiment of the present invention description in can introduce it is several will Element.

Remote Radio Unit ((Radio Remote Unit, RRU), the base station equipment of radio communication, for distally will Baseband signal changes into radiofrequency signal amplification and sent out, and passes through optical fiber and baseband processing unit (Building Base band Unit, BBU) it is connected.

Baseband processing unit (Base Band Unit, BBU), the base station equipment of radio communication a, BBU can support one Individual or multiple RRU.

FDD (Frequency Division Duplexing, FDD), receive and need during transmitting two it is independent Frequency channels.One channel is used for transmission information downwards, and one other channel is used for being passed up information.Exist between two channels One protection frequency range, to prevent from producing between neighbouring transmitter and receiver interfering.

Time division duplex (Time Division Duplex, TDD), sends and receives signal the difference in same frequency channel Carried out in time slot, when carrying out asymmetric data transfer, limited frequency spectrum resource can be made full use of.

Minimize drive test (Minimization of Drive Test, MDT)：The measurement report that is reported by terminal obtains Take the relevant parameter required for the network optimization.

Singular value decomposition (Sigular Value Decomposition, SVD), a kind of matrix decomposition method.For matrix H_N*M, it is assumed that H singular value decomposition is H_N*M=V_N*NΛ_N*M(U_M*M)^H, wherein, matrix Λ_N*MDiagonal on element be equal to H_N*MSingular value .V_N*NAnd U_M*MRow be left and right singular vector in singular value respectively. Table Show U_M*MConjugate matrices, I_MM rank unit matrixs are represented, Represent V_N*NConjugate matrices, I_NRepresent N Rank unit matrix.

Wave beam forming (Beamforming, BF), its target are according to system performance index, are formed and base band (intermediate frequency) is believed Number best of breed or distribution, specifically, exactly compensate during radio transmission by factors such as space loss, multipath effects The signal fadeout and distortion of introducing, while reduce the interference between co-channel users.The principle of wave beam forming：In transmitting terminal, wave beam Figuration device controls the phase and signal amplitude of each emitter, needs mutually to grow so as to obtain in the signal wave battle array launched With destructive interference pattern；In receiving terminal, the signal that different receivers receive by by it is a kind of it is appropriate in a manner of combine, so as to Obtain expected signal radiation mode.

Fig. 1 is an application scenarios schematic diagram of the embodiment of the present invention.As shown in figure 1, BBU passes through the transmitting with N roads RRU Channel attached antenna sends signal, parameter h to user equipment (User Equipment, UE)_tx,n-1Represent the transmitting of the tunnels of RRU n-th The channel response of passage, base station also receive user equipment (User by antenna corresponding to N roads RRU receiving channel Equipment, UE) signal, parameter h_rx,n-1Represent the n-th tunnels of RRU receiving channel channel response.Wherein, transmission channel is with receiving Passage corresponds.It should be understood that although Fig. 1 merely illustrates a BBU, in the application of reality, N roads RRU is possibly connected to On different BBU, and N roads RRU likely corresponds to the different districts under same base station administration, or corresponding to different base station pipe Different districts under linchpin.In addition, in Fig. 1, a RRU may have one or more receiving channel and transmission channel, and RRU's is every All the way all there is a corresponding receiving channel in transmission channel.

Technical problem to be solved of the embodiment of the present invention, is how the measurement result according to UE sides, to base station side Transceiver channel carry out channel correcting so that one or more cells be sent to UE signal can coherent superposition, obtain battle array Row gain.

Fig. 2 is the flow chart of channel correcting method of the embodiment of the present invention.Fig. 2 method is performed by first base station.This method It may include：

201, first base station sends MDT triggering commands to UE.

Wherein, measurement item indicating bit is included in the MDT triggering commands, the measurement item indicating bit is used to indicate UE measurements simultaneously Feed back the descending channel information of at least one cell.

202, first base station receives the MDT message of UE feedbacks.

Wherein, the MDT message carries the descending channel information of at least one cell of UE measurements.

203, first base station is realized to UE measurements extremely according to the descending channel information of the UE at least one cells measured The channel correcting of transceiver channel corresponding to a few cell so that in any of at least one cell cell per all the way Transceiver channel receives channel response with being sent out after the correction of the same subcarrier of synchronization after the correction of the same subcarrier of synchronization The ratio of channel response is equal or approximately equal.

It should be understood that in channel correcting, in the enterprising row of channels correction of same subcarrier, it is ensured that phase invariant.At this In, the sequence number that same subcarrier refers to subcarrier is identical, for example, k-th of subcarrier.In addition, when carrying out channel correcting, due to letter Road becomes slowly, and channel response change is smaller in a shorter predetermined amount of time, it is believed that is the channel of synchronization Response.For example, in similar several symbols, several subframes, in several frames, or during less than one of the coherence time of channel Between section, it is believed that its channel response on same subcarrier is constant.

In addition, it should be understood that the synchronization of channel response is received after correction, the synchronization with sending out channel response after correction, And need not be essentially equal on time, it is only necessary to ensure that its time was spaced within the coherence time of channel.

It should be understood that when carrying out channel correction, it is difficult to accomplish same in synchronization per transceiver channel all the way in cell It is strictly equal that the ratio of hair channel response after channel response subcarrier same with synchronization corrects is received after the correction of subcarrier, always It is certain error be present.Error permission within the scope of, it is believed that after the correction of multiple transceiver channels receive channel response with The ratio that channel response is sent out after the correction of the same subcarrier of synchronization is equal or approximately equal.Specifically, any two be could dictate that The difference of the ratio of channel response is sent out after the correction of individual transceiver channel after the correction of receipts channel response and the same subcarrier of synchronization During less than predetermined threshold, you can be considered as and be equal or approximately equal.The predetermined threshold can be by the strategy decision of operator, or by agreement Regulation.For example, it could dictate that the predetermined threshold is 0.2db.

In the embodiment of the present invention, base station in MDT triggering commands by indicating UE feedback of down channel information, and according to UE The descending channel information of at least one cell of feedback, realize and the transceiver channel of at least one cell (is received and transmitting is logical Road) channel correcting so that in cell transceiver channel received after the correction of the same subcarrier of synchronization channel response with it is same The ratio that channel response is sent out after the correction of moment same subcarrier is equal or approximately equal, so that communication system can obtain The array gain that multiple antennas coherent superposition is brought in cell, improve the performance of the multi-point joint transmission of communication system.

Further, realize also includes to the channel correcting of the transceiver channel corresponding at least one cell of UE measurements： So that any two joint sends the transceiver channel of the cell of signal in the same subcarrier of synchronization at least one cell Correction after receive channel response with after the correction of the same subcarrier of synchronization hair channel response ratio it is equal.

In addition, it should be understood that due to receiving passage after the every correction of transceiver channel all the way in single subdistrict at least one cell Respond, the correction of single subdistrict after receipts passage sound equal with the ratio that channel response is sent out after the correction of the same subcarrier of synchronization The correction of any of which road transceiver channel should be equal to sending out the ratio of channel response after the correction of the same subcarrier of synchronization Channel response is received afterwards with sending out the ratio of channel response after the correction of the same subcarrier of synchronization.

Corrected by the way that the transceiver channel for the cell that signal is sent to joint is further, enable to communication system to obtain The array gain that multiple cell coherent superposition is brought, further improve the performance of the multi-point joint transmission of communication system.

Alternatively, the first community at least one cell measured as one embodiment, the UE is first base station pipe The cell of linchpin.Now, step 203 it is specific can be achieved be：First base station is according to the descending channel information of first community, to the first base Stand and carry out channel correcting in the transceiver channel corresponding to first community.

Alternatively, as one embodiment, the measurement item indicating bit is used to indicate that the UE is measured and fed back at least one small The downlink channel response in area, the UE measurement at least one cell in first community be first base station administration cell, the MDT Message carries the downlink channel response of first community, and this method may also include：First base station obtains the up channel of first community Response.Now, step 203 it is specific can be achieved be：First base station is rung according to the downlink channel response and up channel of first community Should, channel correcting is carried out in the transceiver channel corresponding to first community to first base station.

Alternatively, in a kind of concrete implementation mode of the present embodiment, the downlink channel response of first community includes：The The reception that one base station reaches the UE in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to first community is led to The first downlink frequency domain channel response during road.The up channel response of first community includes：The uplink pilot signal of first community First up domain channel response of the first base station at least receiving channel all the way corresponding to first community is reached, wherein, First base station corresponding to first community at least all the way receiving channel and first base station at least one corresponding to first community Road transmission channel corresponds.Now, step 203 it is specific can be achieved be：First base station is rung according to the first downlink frequency domain channel Channel correcting should be carried out in the transceiver channel corresponding to first community to first base station with the first up domain channel response. Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase information, first up channel Domain channel response includes amplitude and phase information or only includes phase information.

It should be understood that first base station corresponding to first community at least all the way receiving channel and first base station in first community Corresponding at least transmission channel corresponds all the way, is to say that the receiving channel of first base station and transmission channel have corresponding close System.For example, first base station has N roads transmission channel and N roads receiving channel in first community, if first base station is sent out on the 1st tunnel Passage is sent to send down-bound pilot frequency signal to UE, then first base station can receive up the leading of UE transmissions in the 1st tunnel receiving channel Frequency signal.

It should be understood that in a communications system, in order to describe aspect, generally I roads signal and Q roads signal respectively with the reality of plural number Portion and imaginary part represent.Either domain channel response or time domain channel response, its value can use a plural α e^jθRepresent, wherein α For the amplitude information of plural number, θ is the amplitude information of plural number.When needing consideration amplitude and phase information, UE sides can upload α and θ Information；When only needing to consider phase information, UE sides can only upload θ information, can also upload α and θ information, but base station side θ information need to only be handled.The amplitude and phase that any place herein mentions, refer both to represent the plural amplitude and phase of channel response Position.

In concrete implementation, first base station corresponding to first community at least all the way on transmission channel corresponding to first Downlink frequency domain channel responseRepresented with below equation：

Wherein,Represent first base station in the n-th road transmission channel corresponding to first community the of first community The down-bound pilot frequency signal launched on k-th of subcarrier of l symbol reaches the first downlink frequency domain during the i-th tunnel receiving channel of the UE Channel response, 1≤n≤N；

First base station obtain first community uplink pilot signal reach first base station corresponding to first community at least The first up channel response of receiving channel is represented with below equation all the way：

Wherein,Represent l-th of symbol, k-th of the subcarrier of the i-th road transmission channel in first community of the UE The uplink pilot signal of upper transmitting reaches first up channel of the first base station in the n-th road transmission channel corresponding to first community Response, 1≤n≤N；

First base station is according to the first downlink frequency domain channel response and the first up domain channel response, to first base station Channel correcting is carried out in the transceiver channel corresponding to first community to be represented with below equation：

Wherein, s_dl,calRepresent first base station base band number after the correction of the N roads transmission channel transmitting corresponding to first community Word signal,The baseband digital signal that first base station is launched on the N roads transmission channel corresponding to first community is represented,Represent first base station in the N roads hair corresponding to first community The transmitting correction channel response penalty coefficient of passage is penetrated,Represent first base station in the N roads transmitting corresponding to first community Transmitting correction channel response penalty coefficient in passage on the n-th road transmission channel, r_ul,calRepresent first base station in first community institute Baseband digital signal after the correction that corresponding N roads receiving channel receives,Represent that first base station is right in first community institute The baseband digital signal that the N roads receiving channel answered receives,Table Show that first base station corrects channel response penalty coefficient in the reception of the N roads receiving channel corresponding to first community,Represent Reception correction channel response compensation of the first base station in the N roads receiving channel corresponding to first community in the n-th tunnel receiving channel Coefficient, andWithMeet1≤n≤N, K represent the first community institute after correction Channel response ratio of the corresponding N roads transmission channel with transmission channel in the receiving channel of N roads with corresponding receiving channel.Namely Say, the ratio between the transmission channel channel response after correction and corresponding receiving channel channel response is equal, i.e.,

It should be understood that in above-mentioned formula, for description aspect, symbolic parameter l and subcarrier parameter k are eliminated.In fact, s_dl,calS can be designated as_dl,cal(l, k), s_n-1S can be designated as_n-1(l, k), r_ul,cal(l, k) can be designated as r_n-1R can be designated as_n-1(l,k)

Now, first base station can use 3 kinds of modes to carry out channel correcting to the N roads transceiver channel corresponding to first community.

First way, first base station only carry out channel correcting, transmitting channel correction coefficient to transmission channelNow, receiving channels calibration coefficientThat is, first base station need not dock Receive passage and carry out channel correcting.

The second way, first base station only carry out channel correcting, receiving channels calibration coefficient to receiving channelNow transmitting channel correction coefficientThat is, first base station need not be to transmitting Passage carries out channel correcting.

The third mode, first base station carry out channel correcting to transmission channel and receiving channel simultaneously.Specifically, it can make and connect Channel correcting coefficient is received,Transmitting channel correction coefficient,Wherein K₁,K₂Meet condition K₁/K₂=K.

Alternatively, in another concrete implementation mode of the present embodiment, the downlink channel response of first community includes： First base station reaches the reception of the UE in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to first community The first downlink frequency domain channel response and first during passage specify the ratio between parameter.The up channel response bag of first community Include：The uplink pilot signal of first community reaches first base station at least the first of receiving channel all the way corresponding to first community Up domain channel response and second specify parameter between ratio, wherein, first base station corresponding to first community at least All the way receiving channel and first base station corresponding to first community at least transmission channel corresponds all the way.Now, step 203 It is specific can be achieved be：First base station specifies the ratio between parameter according to the first downlink frequency domain channel response and first, and Ratio between the first up domain channel response and the second specified parameter, to first base station in the receipts corresponding to first community Send out passage and carry out channel correcting.Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase Information, the first up domain channel response include amplitude and phase information or only include phase information, the first specified parameter To specify downlink frequency domain channel response corresponding to transmission channel in the downlink frequency domain channel response of first community, the second specified ginseng To specify up domain channel response corresponding to receiving channel in the up domain channel response of first community, this is specified receives number Passage specifies transmission channel corresponding with this.

Alternatively, in another concrete implementation mode of the present embodiment, the downlink channel response of first community includes： First base station reaches the reception of the UE in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to first community The first descending time domain channel response during passage.Now, this method may also include：First base station is by the first descending time domain channel Response is converted into the first downlink frequency domain channel response.Now, the up channel response of first community includes：First community it is up Pilot signal reaches first up frequency domain channel of the first base station at least receiving channel all the way corresponding to first community and rung Should, wherein, first base station corresponding to first community at least all the way receiving channel and first base station corresponding to first community At least all the way transmission channel correspond.Now, step 203 is implemented as：First base station is according to first downlink frequency domain Channel response and the first up domain channel response, enter row of channels to first base station in the transceiver channel corresponding to first community Correction.Wherein, the first downlink frequency domain channel response and the first descending time domain channel response include amplitude and phase information, should First up domain channel response includes amplitude and phase information or only includes phase information.In addition, it should be understood that the present invention is implemented In example, the similar e of phase information^jθForm represent.If phase information is θ forms, it can first switch to e^jθ。

It should be understood that when UE sides upload dedicated tunnel all the way less, this specify transmission channel and this specify receiving channel can be with It is the passage determined after passage as defined in agreement or UE and base station are consulted, or UE and the passage of base station acquiescence, this Inventive embodiments are not restricted to this.For example, passage 0, which may be selected, is used as dedicated tunnel, that is, select the downlink frequency domain of transmission channel 0 Channel response specifies parameter as first, selects the up domain channel response of receiving channel 0 to specify parameter as second.

It should be understood that the scene of multiple cell is similar with the scene that single cell uploads.In the scene of multiple cell, multiple cell Passage needs to use same reference channel.Multiple RRU can be now considered as to a virtual RRU, simply included in the RRU The RRU of multiple cells all passages.

Alternatively, in another embodiment of the present invention, the measurement item indicating bit is used to indicate that the UE is measured and fed back The downlink channel response of at least one cell, the UE measurement at least one cell in second community for the second base station administration Cell, the second base station and first base station are not same base stations, and the MDT message carries the downlink channel response of second community.This When, step 203 is implemented as：First base station sends the downlink channel response of second community to the second base station, so as to the second base Stand and channel correcting is carried out in the transceiver channel corresponding to second community to the second base station.

Alternatively, in another embodiment of the present invention, the measurement item indicating bit is used to indicate that the UE is measured and fed back Down channel phase difference between at least one neighbor cell and the serving cell of the UE, the MDT message carry the service of the UE Down channel phase difference between cell and first community, first community is the neighbor cell of the UE, and first community belongs to the The cell of one base station administration.Now, step 203 is implemented as：First base station is according to the serving cell and first community of the UE Between down channel phase difference, determine the BF weights of serving cell and the BF weights of first community；First base station is according to service The BF weights of cell carry out wave beam forming to the transmission channel corresponding to serving cell, and according to the BF weights of first community to the Transmission channel corresponding to one cell carries out wave beam forming；First base station is according to serving cell and the wave beam forming knot of first community Transmission channel of the fruit to the transmission channel corresponding to serving cell and corresponding to first community carries out channel correcting.

Specifically, in the present embodiment, might as well assume first community be the UE neighbor cell, the serving cell of the UE with Down channel phase difference θ between first community represents with code book [x y], and first base station is according to the serving cell and the UE of the UE Neighbor cell between down channel phase difference, determine the neighbor cell of the UE BF weights and serving cell BF weights use Below equation represents：

Wherein,The BF weights of serving cell are represented, Represent first community BF weights,Ntx0 represents the number of the transmission channel of serving cell, and Ntx1 represents first community Transmission channel number,Represent the downlink channel response of the transmission channel corresponding to the serving cell of the UE Main characteristic vector after SVD is decomposed, i.e.,First characteristic vector,Represent that the serving cell institute of the UE is right The downlink channel response for the transmission channel answeredMain characteristic vector after SVD is decomposed, i.e.,First feature Vector, 1≤m≤Ntx0,1≤m≤Ntx1, andMeet below equation：

In real system, if base station side can not obtain downlink channel response, single cell school can be utilized based on TDD reciprocities Up channel after just is responded to calculate BF weights, and the transmitting channel correction of single cell is carried out when downlink.Need Illustrate, BF weights here can also be that UE utilizes descending channel information such as downlink frequency domain channel estimation, Signal to Interference plus Noise Ratio etc. Calculate the code book obtained (UE can feed back codebook index information to base station side).

In a kind of concrete implementation mode of the present embodiment, when first community belongs to the cell of first base station administration, Exemplified by so that serving cell and first community are all using single current BF transmittings as an example, according to the BF weights of serving cell to serving cell institute Corresponding transmission channel is carried out wave beam forming and represented using below equation：

Channel correcting below equation is carried out to the transmission channel corresponding to first community according to the BF weights of first community Represent：

Wherein,The BF weighting base band data signals of the transmission channel transmitting corresponding to serving cell are represented,The BF weighting base band data signals of the transmission channel transmitting corresponding to first community are represented,Table Show the raw modulation symbols of serving cell downlink,Represent the raw modulation of first community downlink Symbol.When serving cell and first community joint service for a UE,So as to which UE obtains coherent transmitting Gain.

When carrying out channel correcting to serving cell and first community, channel correcting can be carried out using three kinds of modes.

First way, phase path correction only is carried out to the transmission signal of serving cell.Now, to the hair of serving cell Penetrating signal progress channel correcting can be represented with below equation：

The second way, phase path correction is all carried out to serving cell and first community.Generally, can be to service The transmission signal of cell and first community corrects the phase of θ/2 respectively.

Now, the transmission signal progress channel correcting of serving cell can be represented with below equation：

Now, the transmission signal progress channel correcting of first community can be represented with below equation：

The third kind of mode, phase path correction only is carried out to the transmission signal of first community.Now, to first community Transmission signal, which carries out channel correcting, to be represented with below equation：

Alternatively, as another embodiment, the measurement item indicating bit is used to indicate that the UE is measured and fed back at least one Down channel phase difference between neighbor cell and the serving cell of the UE, the MDT message carry the serving cell and of the UE Down channel phase difference between two cells, second community is the neighbor cell of the UE, and second community belongs to first base station pipe The cell of linchpin.Now, step 203 is implemented as：First base station is according under between the serving cell and second community of the UE Row channel phase is poor, determines the BF weights of serving cell, according to the BF weights of serving cell to the transmitting corresponding to serving cell Passage carries out wave beam forming, and according to the wave beam forming result of serving cell, the transmission channel corresponding to serving cell is carried out Channel correcting；And/or first base station sends the down channel phase between the serving cell of the UE and second community to the second base station Potential difference, so that the second base station determines the BF weights of second community, wave beam forming is carried out to the transmission channel corresponding to second community, And according to the wave beam forming result of second community, channel correcting is carried out to the transmission channel corresponding to second community.

Below, the method for the embodiment of the present invention will be further described in conjunction with specific embodiments.

301, first base station sends MDT triggering commands.

In the prior art, base station can carry following configuration parameter in UE MDT triggering commands are sent to：Measurement item arranges Table (List of Measurement), report trigger (Reporting Trigger), measurement interval (Report Interval), measurable amount (Report Amount) and time threshold (Event Threshold).Base station can be touched by MDT Send instructions instruction UE reporting measurements Reference Signal Received Quality (Reference Signal Receiving Quality, RSRQ) With Reference Signal Received Power (Reference Signal Receiving Power, RSRP).In the prior art, LTE and The indicating bit information of UMTS measurement item list can be as shown in Table 1 and Table 2.

Table 1.

Table 2.

As shown in table 1, in LTE protocol, measurement item list may include two indicating bits M1 and M2.Now, measurement item arranges Table can include three kinds of effective configured informations：M1, M2 and M1+M2.Wherein, M1 be used for indicate UE periodic measurements RSRQ and RSRP, or reported according to event (event) A2 and trigger the measurement；M2 is used to indicate UE measurement power headrooms (Power Headroom, PH).

As shown in table 2, in UMTS agreements, measurement item list may include three indicating bits M1, M2 and M3.Now, measure Item list can include seven kinds of effective configured informations：M1、M2、M3、M1+M2、M1+M3、M2+M3、M1+M2+M3.Wherein, M1 is used for The RSCP and CPICH of UE periodic measurements CPICH Common Pilot Channel (Common Pilot Channel, CPICH) Ec/No are indicated, Or reported according to event1F and trigger the measurement.M2 is used to indicate that UE reports triggering measurement 1.28Mcps TDD according to event1L, The process of P-PCCPCH RSCP and ISCP time slot.M3 is used for the signal to noise ratio SIR for indicating UE measurements base station, if FDD System, M3 may be used to indicate that the SIR error codes (err) of UE measurements base station.

It should be understood that only LTE, UMTS application scenarios are explained for the embodiment of the present invention, the present invention is not intended that The method of embodiment is only applicable to LTE, UMTS application scenarios, the method for the embodiment of the present invention can also be applied and popularized in LTE, In communication system beyond UMTS.

In the embodiment of the present invention, first base station can increase by 1 indicating bit in the indicating bit information of measurement item list, be used for The descending channel information of UE back services cells is indicated, the indicating bit information of the measurement item list can be as shown in Table 3 and Table 4.

Table 3.

Table 4.

As shown in table 3, in LTE, measurement item list may include indicating bit M1, M2 and M3.Wherein, M1 and M2 effect with LTE M1 and M2 are identical in table 1, and M3 may be used to indicate the descending channel information of UE feedbacks UE serving cell, so as to base station root Channel correcting is carried out to the transceiver channel of base station according to descending channel information.

As shown in table 4, in umts, measurement item list may include indicating bit M1, M2, M3 and M4.Wherein, M1, M2 and M3 Effect it is identical with M1, M2 and M3 of UMTS in table 2, M4 be used for indicate UE measurement multichannel time and/or phase alignment.

The downlink frequency domain channel response of 302, UE measurement serving cells.

UE according to MDT triggering commands, can measure the downlink frequency domain channel response of serving cell.

It should be understood that the serving cell mentioned in the embodiment of the present invention, UE serving cell is referred both to.

Used technological means is measured for UE, refers to prior art, the embodiment of the present invention is herein and unlimited System.

303, UE send MDT message, carry the downlink frequency domain channel response of serving cell.

UE can complete measurement by wireless heterogeneous networks (Radio Resource Control, RRC) message and report, and report Content pass through MDT message transmissions.Specifically, in RRC agreements, MeasurementReport message can be used to complete to survey Amount information reports.In MeasurementReport message, the related pattern of definition is as follows：

Wherein, in measResults, the measurement result of correlative measurement quantifier is defined, is mainly included：The RSRP of serving cell With RSRQ etc..

In the embodiment of the present invention, the feedback of channel information of this cell can be increased in the first order under measResults, used DlcsiResult is identified, and its specific content is represented using 16 binary datas.For example, dlcsiResult:0xa042a210, 0x1426a017,0x......It should be understood, of course, that the feedback of channel information information of this cell can also be placed on measurement report (MeasurementReport) other positions, the embodiment of the present invention are not restricted to this.

In the embodiment of the present invention, UE is believed by the descending channel information of MDT message feedbacks for the downlink frequency domain of serving cell Road is responded, that is, first base station is reached in the down-bound pilot frequency signal that multichannel transmission channel corresponding to the serving cell is launched and is somebody's turn to do Downlink frequency domain channel response during UE receiving channel.

In the embodiment of the present invention, UE one or more receiving channels pair may be selected in feedback of down channel information in UE The downlink channel response answered carries out quantization feedback.Connect for example, channel quality is best in the receiving channels all optional UE of UE Receive passage to be fed back, or select one or more receiving channels in all receiving channels of UE to be fed back.Consider down Row channel feedback expense, UE can take X to take out one mode to feed back.Specifically, X spans are 1~Y, Y represents descending except guarantor The effective subcarrier number protected outside subcarrier.The definitions of bandwidth of subcarrier is certain frequency width, such as 15KHz.It is, of course, also possible to In the presence of other feedback systems, this is not restricted for the embodiment of the present invention.

In addition, in the embodiment of the present invention, during UE feeding back downlink domain channel responses, can carry out in different ways anti- Feedback.Serving cell might as well be represented with Cell0, then the transmission channel corresponding to serving cell is on l-th of symbol, k-th of subcarrier Downlink frequency domain channel response can be designated asWherein l is OFDM symbol label, and span is 0~L-1, and L is represented The maximum number of OFDM symbol in the time slot that standard defines；K is subcarrier number, and span is 0~K-1, and K represents son The maximum number of carrier wave.Such as in 20M system bandwidths, L=7, K=1200.It is pointed out that in LTE, a subframe 2 time slots can be included.

In the first concrete implementation mode, UE can be to the multichannel transmission channel corresponding to first base station back services cell Downlink frequency domain channel response.It might as well assume that the multichannel transmission channel corresponding to UE back services cells receives to UE the i-th tunnel The downlink frequency domain channel response of passage, specifically available equation below expression：

Wherein,Represent first base station in multiple transmission channels corresponding to serving cell in l-th of symbol The down-bound pilot frequency signal launched on k-th of subcarrier reaches the channel parameter of UE the i-th tunnel receiving channel.Represent The n-th road transmission channel is launched descending on l-th of symbol, k-th of subcarrier in multiple transmission channels corresponding to serving cell Pilot signal reaches the down channel frequency domain of UE the i-th tunnel receiving channel, wherein, 1≤n≤N, N are small to be serviced in first base station The number of transmission channel or receiving channel corresponding to area, the numbering of certain receiving channel all the way in the multipath reception passage that i is UE.

In second of concrete implementation mode, UE can be to the multichannel transmission channel corresponding to first base station back services cell Downlink frequency domain channel response and specified transmission channel downlink channel response between ratio.For example, this specifies transmission channel It can be the transmission channel 0 in multiple transmission channels.Now,Specifically available equation below represents：

Now, first base station does not have to the downlink channel response of feedback transmission channel 0, can feedback transmission channel all the way less Downlink channel response.

In addition, when channel correcting includes amplitude correction and phasing, in above two concrete implementation mode,In should include amplitude and phase information；When channel correcting only includes phasing,In can Comprising amplitude and phase information, also phase information only can be included.

The downlink frequency domain channel response of the n-th road transmission channel corresponding to serving cell can use similarPlural number Represent.During if necessary to carry out amplitude correction and phasing,Formula can be usedRepresent, its Middle θ_n-1Represent the down-bound pilot frequency signal of the n-th roads of multichannel transmission channel Zhong transmission channel corresponding to first community to the i-th of UE The channel phase shift angle of the downlink frequency domain channel response of road receiving channel, α represent the amplitude of the downlink frequency domain channel response.If When only needing to carry out phasing,Formula can be usedRepresent；Certainly, it may also comprise amplitude letter Breath, i.e.,

Specifically, the embodiment of the present invention is carried out descending by taking the TDD LTE systems of 4T4R 20MHz system bandwidths as an example to UE Channel feedback illustrates, and assumes that downlink frequency domain channel response of the UE selections in receiving channel 0 is fed back.

Now, the channel response value that UE can be chosen on some subcarriers of some OFDM symbol is fed back, such as above The downlink frequency domain channel response of pilot frequency locations, or using obtaining institute after pilot frequency locations downlink frequency domain channel response noise reduction filtering After having the downlink frequency domain channel response of subcarrier in frequency domain, on OFDM symbol 0, in the form of 6 take out 1, final need instead is obtained The downlink channel response value of feedback.

For the first embodiment, now

If including amplitude and phase information in downlink frequency domain channel response, now feedback data amount is：X (believe by channel The bit number that breath real part or imaginary part represent) * 2 (plural number includes real and imaginary parts) * 1200/6 (6 take out 1) * 4 (base station 4Tx transmittings).

If only not including amplitude information comprising phase in downlink frequency domain channel response, now feedback data amount is：x (bit number that channel information phase represents) * 1200/6 (6 take out 1) * 4 (base station 4Tx transmittings).

For second of embodiment, now

If including amplitude and phase information in downlink frequency domain channel response, due to only feeding back j=1,2,3 passage, this When feedback data amount be：X (channel information real part or the bit number of imaginary part expression) * 2 (plural number includes real and imaginary parts) * 1200/6 (6 take out 1) * 3 (base station 4Tx transmittings).

If only not including amplitude information comprising phase in downlink frequency domain channel response, due to only feeding back j=1,2,3 Passage, feedback data amount are：X (bit number that channel information phase represents) * 1200/6 (6 take out 1) * 3 (base station 4Tx transmittings).

304, first base station receives MDT message, obtains the downlink frequency domain channel response of serving cell.

First base station receives the MDT message that UE is sent, and the downlink frequency domain channel for therefrom obtaining serving cell Cell0 rings Should.

305, first base station obtains the up domain channel response of serving cell.

First base station is receiving serving cell Cell0 downlink frequency domain channel response, can obtain serving cell Cell0's Up domain channel response.Specifically, first base station can obtain up domain channel response by up DMRS or SRS message.

Technological means used by for the up domain channel response of first base station acquisition, refers to prior art, this hair Bright embodiment is not intended to limit herein.

The up channel response that first base station obtains, it is corresponding with the downlink channel response that UE is sent.If it should be understood that UE The downlink channel response of the n-th road sendaisle in the multichannel transmission channel corresponding to serving cell is sent, then first base station obtains Up channel response for the n-th tunnel receiving channel in the multipath reception passage corresponding to serving cell up channel response.

The first specific implementation, now serving cell corresponding with the first concrete implementation mode in step 303 The available equation below of the up channel response message of corresponding multipath reception passage represents：

Wherein,Under representing that UE the i-th road transmission channel is launched on l-th of symbol, k-th of subcarrier Row pilot signal reaches up domain channel response during multiple receiving channels corresponding to serving cell,Represent UE The down-bound pilot frequency signal launched on l-th of symbol, k-th of subcarrier of the i-th road transmission channel reach corresponding to serving cell The up domain channel response of n-th tunnel receiving channel in multiple receiving channels, 1≤n≤N, N are the receiving channel of first base station Number.

It should be understood thatCorresponding receiving channel withCorresponding relation be present in corresponding transmission channel. First base station sends data on the n-th road transmission channel to UE, then first base station can receives in the n-th tunnel receiving channel is somebody's turn to do The data that UE is sent.

Second of specific implementation, similar with second of concrete implementation mode in step 303, first base station can obtain The up domain channel response of multipath reception passage corresponding to serving cell responds it with the up channel of specified receiving channel Between ratio, this specify receiving channel it is corresponding with the specified transmission channel of step 303.For example, this specifies receiving channel can be with It is the receiving channel 0 in multiple receiving channels.Now the available equation below of up channel response message represents：

When channel correcting includes amplitude correction and phasing, in above two concrete implementation mode,In should include amplitude and phase information；When channel correcting only includes phasing,In can Comprising amplitude and phase information, also phase information only can be included.

Similarly, the up channel frequency domain of the n-th tunnel receiving channel corresponding to serving cell rings also available similar Complex representation.During if necessary to carry out amplitude correction and phasing,Formula can be used Represent, wherein θ_n-1Represent that the multichannel that the uplink pilot signal of UE the i-th road transmission channel transmitting is reached corresponding to first community connects The channel phase shift angle of up domain channel response during receipts passage Zhong the n-th tunnel receiving channels, α represent that the upper signal channel frequency domain rings The amplitude answered.If only need to carry out phasing,Formula can be usedRepresent；Certainly, also may be used Including amplitude information, i.e.,

Equally with 4T4R20MHz system bandwidths, exemplified by TDD LTE, up domain channel response is obtained to first base station and entered Row explanation, and assume the feedback for the transmission channel 0 that the up domain channel response that first base station obtains is UE.

The up frequency domain channel that first base station can obtain serving cell Cell0 by up DMRS signalings or SRS signalings is rung Should.

In the first specific implementation, nowIts In, k is the subcarrier number for extracting position.

In second of specific implementation, nowWherein, K is the subcarrier number for extracting position.

306, first base station is small to servicing according to the up domain channel response and downlink frequency domain channel response of serving cell Area carries out channel correcting.

Specifically, first base station according to the up domain channel response of serving cell and downlink frequency domain channel response to service Multichannel transceiver channel corresponding to cell carries out channel correcting.

According toWithFirst base station can determine that in multichannel transceiver channel corresponding to serving cell Transmitting rectification building-out factor beta_dlWith reception rectification building-out factor beta_ul。

Wherein,

Represent transmitting of the first base station in the N roads transmission channel corresponding to first community on the n-th road transmission channel Channel response penalty coefficient is corrected,Represent that first base station connects on the n-th tunnel in the N roads receiving channel corresponding to first community The reception correction channel response penalty coefficient on passage is received, wherein, 1≤n≤N.

Now, baseband digital signal after the correction that first base station is launched on the N roads transmission channel corresponding to serving cell s_dl,calIt can be represented with below equation：

Wherein,Represent the base-band digital letter that first base station is launched on the N roads transmission channel corresponding to serving cell Number.

In addition, first base station baseband digital signal after the correction that the N roads receiving channel corresponding to serving cell receives r_ul,calIt can be represented with below equation：

Wherein,Represent the baseband digital signal that first base station receives in the N roads receiving channel corresponding to serving cell.

By taking Fig. 1 as an example, the channel response between transmission channel and receiving channel after correction need to meet following condition：

Wherein h_tx,n-1Represent the letter after the n-th road transmitting channel correction Road responds (downlink channel response), h_rx,n-1Represent the channel response after the n-th road receiving channels calibration (up channel response).

It might as well assume that the channel response ratio between launch channel and corresponding reception channel is K, i.e.,

By taking the first implementation of the first specific implementation of step 303 and step 305 as an example, then now launch Channel response after channel and reception channel correction can be represented with below equation：

Further according to the channel response between launch channel and corresponding reception channel than K, below equation can obtain：

Now, first base station can use 3 kinds of modes, and channel correcting is carried out to the N roads transceiver channel corresponding to first community.

Particularly, as K=1, the channel response of launch channel is consistent with the channel response for receiving channel.

When second of implementation feedback up-downgoing letter with second of specific implementation of step 303 and step 305 When road responds, correcting mode is similar with the above method, and those skilled in the art easily can be derived by above-mentioned formula Out, the embodiment of the present invention will not be repeated here.

It should be understood that it is that transmit-receive combination channel correcting is obtained by uplink and downlink domain channel response in the embodiment of the present invention Coefficient, signal compensation is then carried out in subcarrier in frequency domain.If it is desired to final compensation is carried out in time domain, then is needed upper The result that row and descending domain channel response differ transforms to time domain, the tap that is delayed is obtained, according to the phase of multiple passage taps To relation, the emission time for adjusting multiple passages is alignd.

In the embodiment of the present invention, by the downlink frequency domain channel response of cell and the up domain channel response of cell to small Transceiver channel in area carries out channel correcting so that every transceiver channel all the way in cell is in the school of the same subcarrier of synchronization It is equal with the ratio that channel response is sent out after the correction of the same subcarrier of synchronization just to receive channel response afterwards, so that communication system System can obtain the array gain that multiple antennas coherent superposition is brought in cell, improve the property of the multi-point joint transmission of communication system Energy.

401, first base station sends MDT triggering commands.

The downlink frequency domain channel response of 402, UE measurement serving cells.

Step 401 and step 402 and Fig. 3 step 301,302 similar, the embodiment of the present invention will not be repeated here.

Downlink frequency domain channel response is converted to descending time domain channel response by 403, UE.

Obtaining the downlink frequency domain channel response of serving cellAfterwards, UE can be to the downlink frequency domain channel response Make Fourier transformation (FFT), transform to time domain, obtain descending time domain channel response corresponding to the downlink frequency domain channel response, and One or more footpaths are selected to be fed back.It should be understood that the down-bound pilot frequency signal that generally UE is received is from transmitting antenna Transmitting, and UE is reached by modes such as reflection, refraction, diffractions, therefore, the transmission of signal usually there will be multiple paths, this In multipath be exactly to represent amplitude and phase corresponding to multiple paths.For example, a path reaches signal a*s, wherein s after UE Transmission signal is represented, then a represents to represent the gain factor (containing real and imaginary parts) in a footpath.

By taking 20MHz system bandwidths as an example, UE can be by the downlink frequency domain channel response of 1200 subcarriers 2048 points of FFT is, transforms to time domain, obtains the time-domain taps information of downlink channel response, then selects the mould of plural number maximum The P multipath feedback of (i.e. amplitude is maximum), or all multipaths arrange from big to small, select multipath energy to exceed gross energy X% is fed back as thresholding.It is assumed that having fed back P footpath, each footpath uses complex representation, then now feedback data amount is：P*x (channel information real part or the bit number of imaginary part expression) * 2 (plural number includes real and imaginary parts) * 4 (base station 4Tx transmittings).Due to choosing P footpath of the mould maximum selected is fed back, it is necessary to encode the position in each footpath, and such as 2048 points of FFT are, it is necessary to which 10bit represents every The position in individual footpath, thus feed back total data volume and need to add P*10bit.

It should be understood that in the time domain channel response information of UE feedbacks, amplitude and phase information are included.

404, UE send MDT message, carry the descending time domain channel response of serving cell.

Similar with step 303, UE can be complete by wireless heterogeneous networks (Radio Resource Control, RRC) message Reported into measurement, the content reported now, is equally carried out by MDT message transmissions using MeasurementReport message Report.

405, first base station receives MDT message, obtains the descending time domain channel response of serving cell.

406, descending time domain channel response is converted to downlink frequency domain channel response by first base station.

First base station can be inversely transformed into downlink frequency domain letter after the descending time domain channel response of serving cell is received Road responds, and specific implementation refers to prior art, and the embodiment of the present invention will not be repeated here.

407, first base station obtains the up domain channel response of serving cell.

It should be understood that the up domain channel response that first base station obtains, can include amplitude and phase, also phase only can be included And amplitude is not included.

408, first base station is small to servicing according to the up domain channel response and downlink frequency domain channel response of serving cell Area carries out channel correcting.

Specifically, first base station can be according to the up domain channel response and downlink frequency domain channel response of serving cell to clothes Multichannel transceiver channel corresponding to cell of being engaged in carries out channel correcting.

When the up domain channel response of serving cell does not only include amplitude comprising phase, just for phase to service Cell carries out channel correcting；When the up domain channel response of serving cell includes phase and amplitude, for amplitude and phase Channel correcting is carried out to serving cell.

Step 407 and step 408 and Fig. 3 step 305,306 similar, the embodiment of the present invention will not be repeated here.

In the embodiment of the present invention, by the way that the descending time domain channel response of cell is transformed into downlink frequency domain channel response, and Row of channels is entered to the transceiver channel in cell according to the up domain channel response of the downlink frequency domain channel response of cell and cell Correction so that receive channel response and same a period of time after the correction of the same subcarrier of synchronization per transceiver channel all the way in cell Carve send out after the correction of same subcarrier channel response ratio it is equal so that communication system can obtain multiple antennas in cell The array gain that coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

501, first base station sends MDT triggering commands.

First base station can increase the indicating bit of two or more in the indicating bit information of measurement item list, for referring to Show the descending channel information of UE back services cells.In the embodiment of the present invention, with first base station measurement item list indicating bit In information exemplified by 2 indicating bits of increase.Now, the indicating bit information of the measurement item list can be as shown in table 5 and table 6.

Table 5.

Table 6.

As shown in table 5, in LTE, measurement item list may include indicating bit M1, M2, M3 and M4.Wherein, M1 and M2 work With identical with the M1 and M2 of LTE in table 1, M3 and M4 may be used to indicate UE feedbacks UE serving cell and/or at least one adjacent The descending channel information of cell, so that base station carries out channel correcting according to descending channel information to the transceiver channel of base station.M3 and M4 can have multiple combinations mode, and every kind of combination represents different implications, for example, M3 and M4 combination and its implication can be such as Shown in table 7.

Table 7.

M3+M4	Implication
		00	Back services cell downlink channel information
01	Back services cell and most strong jamming adjacent area descending channel information
		10	Back services cell and 2 strong jamming adjacent area descending channel informations
11	Back services cell and 3 strong jamming adjacent area descending channel informations

Certainly, M3+M4 also may indicate that other implications, such as can represent back services cell and all strong jammings with 11 Adjacent area descending channel information, M3+M4 also can be extended to more indicating bits, such as M3+M4+M5, to represent more measurements Situation.

It should be understood that when serving cell and adjacent cell joint provide service for UE, simply combine on a data channel and be UE provides service, and UE control channel still falls within the cell of UE accesses, but when UE is measured, still can will provide clothes for UE The signal of the neighbor cell of business measures as interference signal.

Further optionally, UE is in feedback of down channel information, the version (Release11) of reusable existing LTE protocol Channel condition information (the Channel State that the transmission mode 10 (Transmission Mode10, TM10) of the inside is related to Information, CSI) feedback mechanism, MDT also measures progress feedback one or more cell according to the CSI of configuration or multiple penetrates The descending channel information of frequency extension unit (Remote Radio Unit, RRU).

As shown in table 6, in umts, measurement item list may include indicating bit M1, M2, M3 and M4.Wherein, M1, M2 and M3 Effect it is identical with M1, M2 and M3 of UMTS in table 2, M4+M5 effect is similar with the effect of the M3+M4 in table 5, and the present invention is real Example is applied to will not be repeated here.

The downlink frequency domain channel response of 502, UE measurement serving cells and first community.

The indicating bit of measurement item lists of the UE in MDT triggering commands measures.UE measures serving cell and/or phase The process of the descending channel information of adjacent cell, refers to prior art, and the embodiment of the present invention will not be repeated here.

It is determined that during strong jamming adjacent area, can be judged based on certain mode, such as can be based on serving cell and adjacent area RSRP is judged, if meeting Rule of judgment | RSRP_adj-RSRP_service|<Thr is then considered as strong jamming cell, wherein RSRP_serviceRepresent the descending RSRP, unit dBm, RSRP of serving cell_adjDescending RSRP, the unit dBm of adjacent area are represented, Thr is the threshold value for determining whether strong jamming cell, unit dB.For example, Thr value is 6dB, RSRP_serviceValue for- 80dBm, RSRP_adjValue is -85dBm, then now serving cell and the RSRP of adjacent area meet above-mentioned condition, and adjacent area can be considered clothes The strong jamming cell for cell of being engaged in.

MDT triggering commands instruction UE back services cell and most strong jamming adjacent area descending channel information might as well be assumed, and it is false If the most strong jamming adjacent area of UE UE measurements is first community Cell1, and the base station for administering first community is first base station, service Cell is designated as Cell0.It should be understood that during serving cell and first community carry out allied signal transmitting, serving cell exists Still the signal that first community is launched can be considered as into interference signal when measuring to measure.

Similar with embodiment illustrated in fig. 3, UE can be to the multichannel transmission channel corresponding to first base station back services cell Downlink frequency domain channel response, or UE can be to the downlink frequency domains of the multichannel transmission channel corresponding to first base station back services cell Ratio between the downlink channel response of channel response and specified transmission channel.When channel correcting includes amplitude correction and phase school Timing, amplitude and phase are included in feedack；When channel correcting only includes phasing, can be wrapped in feedack Containing amplitude and phase, phase only can also be included.The mode of the downlink frequency domain channel response of UE feedback first communities is similar.

503, UE send MDT message, carry the downlink frequency domain channel response of first community and serving cell.

The downlink frequency domain channel response of first community and serving cell can be passed through one by a kind of concrete implementation mode, UE MDT message disposably feeds back to first base station.

Another concrete implementation mode, UE can cell feeding back downlink domain channel response one by one, for example, first back services The downlink frequency domain channel response of cell, then feed back the downlink frequency domain channel response of first community.If there is multiple adjacent interferences Cell, the downlink frequency of neighboring interfering cell can be fed back by order from high in the end to UE annoyance level with neighboring interfering cell Domain channel response, or the downlink frequency domain channel response of the sequencing feedback neighboring interfering cell by measurement.

In addition, similar with embodiment illustrated in fig. 4, UE can also be by serving cell and the downlink frequency domain channel response of first community Descending time domain channel response is converted to, then feeds back to base station.

504, first base station receives MDT message, obtains the downlink frequency domain channel response of first community and serving cell.

First base station receives the MDT message that UE is sent, and therefrom obtains first community Cell1's and serving cell Cell0 Downlink frequency domain channel response.

If UE feedbacks is descending time domain channel response, first base station also needs to change descending time domain channel response Into downlink frequency domain channel response.

505, first base station obtains first community and the up domain channel response of serving cell.

Similar with embodiment illustrated in fig. 3, first base station can obtain Cell0 pairs of first community Cell1 and serving cell respectively The up domain channel response for the receiving channel answered, the embodiment of the present invention will not be repeated here.

It should be understood that receiving channel corresponding to serving cell Cell0 and first community Cell1, refer to report with UE descending The corresponding receiving channel of transmission channel in domain channel response.

506, first base station is small to servicing according to the up domain channel response and downlink frequency domain channel response of serving cell Area carries out channel correcting, and first community is carried out according to the up domain channel response of first community and downlink frequency domain channel response Channel correcting.

Specifically, first base station obtain serving cell up domain channel response and downlink frequency domain channel response after, Channel correcting can be carried out to the multichannel transceiver channel corresponding to serving cell, implement the step of referring to Fig. 3 embodiments 306.Similarly, first base station can also be according to the up domain channel response and downlink frequency domain channel response of first community to first Multichannel transceiver channel corresponding to cell carries out channel correcting, and the embodiment of the present invention will not be repeated here.

After channel correcting, any two-way transceiver channel is same in synchronization in the transceiver channel of serving cell and first community After the correction of one subcarrier receive channel response with after the correction of the same subcarrier of synchronization hair channel response ratio it is equal or Approximately equal.

In the embodiment of the present invention, by downlink frequency domain channel response and the up domain channel response of serving cell, and The downlink frequency domain channel response of first community and up domain channel response, joint channel is carried out to serving cell and first community Correction so that joint sends the correction of the serving cell of signal and the transceiver channel of first community in the same subcarrier of synchronization Channel response is received afterwards to be equal or approximately equal with sending out the ratio of channel response after the correction of the same subcarrier of synchronization, so that The array gain that multiple cell coherent superposition is brought can be obtained by obtaining communication system, and the multi-point joint for further improving communication system passes Defeated performance.

601, base station sends MDT message.

Step 601 is similar with Fig. 5 step 501, and the embodiment of the present invention will not be repeated here.

The downlink frequency domain channel response of 602, UE measurement serving cells and second community.

MDT triggering commands instruction UE back services cell and most strong jamming adjacent area descending channel information might as well be assumed, and it is false If the most strong jamming adjacent area of UE UE measurements be second community Cell2, and the base station of administration second community is the second base station, second Base station is different from first base station, and serving cell is designated as Cell0.It should be understood that carry out allied signal in serving cell and second community During transmitting, the signal that the secondth area launches still can be considered as interference signal when measuring and be surveyed by serving cell Amount.

The mode of the downlink frequency domain channel response of UE back services cell and second community, taken with UE feedbacks in step 402 Cell of being engaged in is similar with the mode of the downlink frequency domain channel response of first community, and the embodiment of the present invention will not be repeated here.

603, UE send MDT message, carry the downlink frequency domain channel response of second community and serving cell.

604, first base station receives MDT message, obtains the downlink frequency domain channel response of second community and serving cell.

Step 603 and step 604 are similar with Fig. 5 step 503, step 504, and the embodiment of the present invention will not be repeated here.

605, first base station sends the downlink frequency domain channel response of second community to the second base station.

First base station, can be by the information to second after the downlink frequency domain channel response of second community of UE feedbacks is received Base station forwards.

Certainly, if UE feeds back the descending time domain channel response of second community in step 604, now first base station can be to Second base station forwards the descending time domain channel response of second community, or is forwarded again after transforming it into downlink frequency domain channel response To the second base station.

606, first base station obtains the up domain channel response of serving cell.

Step 606 is similar with the step 305 of embodiment illustrated in fig. 3, and the embodiment of the present invention will not be repeated here.

607, first base station is small to servicing according to the up domain channel response and downlink frequency domain channel response of serving cell Area carries out channel correcting.

Specifically, it is similar with Fig. 3 step 306, first base station can according to the up domain channel response of serving cell and Downlink frequency domain channel response carries out channel correcting to the multichannel transceiver channel corresponding to serving cell.

608, the second base station obtains the up domain channel response of second community.

Second base station can be obtained after the second community Cell2 downlink frequency domain channel response of first base station forwarding is received Second community Cell2 up domain channel response is taken, it implements and refers to prior art, and the embodiment of the present invention is herein not Repeat again.

609, the second base station is small to second according to the up domain channel response and downlink frequency domain channel response of second community Area carries out channel correcting.

Specifically, it is similar with Fig. 3 step 306, the second base station obtain second community up domain channel response and , can be according to the up domain channel response and downlink frequency domain channel response of second community, to second after downlink frequency domain channel response Multichannel transceiver channel corresponding to cell carries out channel correcting, and the embodiment of the present invention will not be repeated here.

After channel correcting, any two-way transceiver channel is same in synchronization in the transceiver channel of serving cell and second community After the correction of one subcarrier receive channel response with after the correction of the same subcarrier of synchronization hair channel response ratio it is equal or Approximately equal.

In the embodiment of the present invention, by downlink frequency domain channel response and the up domain channel response of serving cell, and The downlink frequency domain channel response of second community and up domain channel response, joint channel is carried out to serving cell and second community Correction so that joint sends the correction of the serving cell of signal and the transceiver channel of second community in the same subcarrier of synchronization Channel response is received afterwards to be equal or approximately equal with sending out the ratio of channel response after the correction of the same subcarrier of synchronization, so that The array gain that multiple cell coherent superposition is brought can be obtained by obtaining communication system, and the multi-point joint for further improving communication system passes Defeated performance.

701, first base station sends MDT triggering commands.

Similar with the embodiment shown in Fig. 3, first base station can increase indicating bit in existing MDT triggering commands, for referring to Show the down channel phase difference of UE back services cell and neighbor cell.Wherein, the neighbor cell for disturb most strong one or Multiple neighbor cells.For example, can increase by 1 indicating bit, as shown in table 3 or table 4, now, the M3 of table 3 or the M4 of table 4 can use Down channel phase difference in instruction UE back services cell and most strong jamming neighbor cell.In another example 2 instructions can be increased Position, as shown in table 5 or table 6, by taking table 5 as an example, the represented implication of M3+M4 combinations can be as shown in table 8：

Table 8.

M3+M4

Implication

00	Do not feed back
		01	The down channel phase difference of back services cell and most strong jamming adjacent area
10	Back services cell and the down channel phase difference of 2 strong jamming adjacent areas
		11	Back services cell and the down channel phase difference of 3 strong jamming adjacent areas

It should be understood that the implication in the embodiment of the present invention represented by M3+M4 combination can exchange, or may represent other Similar implication.In addition, in the embodiment of the present invention, more indicating bits can also be increased, to provide more combinations to indicate UE is fed back.

The down channel phase difference of 702, UE measurement serving cells and first community.

UE is after the MDT triggering commands of first base station transmission are received, it may be determined that needs feedback of down channel phase difference The number of neighbor cell, the annoyance level that then UE can be according to neighbor cell to UE, it is determined that needing feedback of down channel phase difference Neighbor cell.For example, when only having 1 indicating bit to be used for indication feedback in MDT triggering commands, UE it needs to be determined that 1 most Strong jamming adjacent area.In another example when there is 2 indicating bits to be used for indication feedback in MDT triggering commands, such as the M3+M4 values of table 8 For the situation of " 11 ", then now UE it needs to be determined that 3 most strong jamming adjacent areas.

After UE determines most strong jamming adjacent area, it can further measure to obtain the down channel of serving cell and most strong jamming adjacent area Phase difference.In the embodiment of the present invention, it is assumed that comprising the first community for belonging to first base station administration in most strong jamming adjacent area, be designated as Cell1, serving cell are designated as Cell0.It should be understood that during serving cell and first community carry out allied signal transmitting, The signal that firstth area launches still can be considered as interference signal when measuring and measured by serving cell.

703, UE send MDT message to first base station, carry serving cell and the down channel phase difference of first community.

After UE measurements obtain serving cell and the down channel phase difference of first community, it can be fed back by MDT message, Serving cell and the down channel phase difference of first community are carried in the MDT message, wherein, serving cell and first community are all UE provides service.

The phase that serving cell might as well be assumed is θ^Cell0, the phase of first community is θ^Cell1, then θ=θ^Cell1-θ^Cell0

It is assumed that first base station and UE safeguard identical code book phase information.

If feedback data amount is 2bit, the down channel phase difference between two cells of serving cell and first community θ can be embodied by following code book：

C=[x y]=[1 1], [1-1], [1 j], [1-j].

Wherein, j is complex unit, and [1 1] represent that θ values are 0 °, and [1-1] represents that θ values are 180 °, and [1 j] represents θ Value is 90 °, and [1-j] represents that θ values are 270 °.

If feedback data amount is 3bit, the down channel phase difference between two cells can contemplate using 8PSK side Formula carries out code book phase feedback, and phase feedback precision is just 360/8.Certainly, if feedback data amount is more, can improve more accurate Feedback accuracy.

It should be understood that if UE needs to feed back multiple down channel phase differences, UE can be concentrated instead in a MDT message Feedback, also can only feed back a down channel phase difference every time.

704, first base station receives MDT message, obtains serving cell and the down channel phase difference of first community.

First base station can indicate ratio after MDT message is received according to the down channel phase difference carried in MDT message Spy, obtain serving cell and the down channel phase difference of first community.

705, first base station determines serving cell and first according to the down channel phase difference of serving cell and first community The BF weights of cell.

In real system, if base station side can not obtain downlink channel response, single cell school can be utilized based on TDD reciprocities Up channel after just is responded to calculate BF weights, and the transmitting channel correction of single cell is still provided for when downlink.Need It is noted that BF weights here, which can also be UE, utilizes descending channel information such as downlink frequency domain channel estimation, Signal to Interference plus Noise Ratio The code book obtained Deng calculating (UE can feed back codebook index information to base station side).

One specific example of the embodiment of the present invention, the BF power of serving cell and first community can be determined by below equation Value.

Wherein,The BF weights of serving cell are represented, Represent first community BF weights, Represent the downlink channel response of the transmission channel corresponding to serving cellMain characteristic vector after SVD is decomposed, i.e.,First characteristic vector,Represent that serving cell institute is right The downlink channel response for the transmission channel answeredMain characteristic vector after SVD is decomposed, i.e.,First feature Vector, 1≤m≤Ntx0,1≤m≤Ntx1, Ntx0 represent the number of the transmission channel of serving cell, and Ntx1 represents first community Transmission channel number.In addition,Meet below equation：

706, first base station carries out wave beam forming according to the BF weights of serving cell to the transmission channel of serving cell, according to The BF weights of first community carry out wave beam forming to the transmission channel of first community.

So that serving cell is using single current BF transmittings as an example, according to the BF weights of serving cell to the hair corresponding to serving cell Penetrate passage and carry out wave beam forming using below equation expression：

Wherein,The BF weighting base band data signals of the transmission channel transmitting corresponding to serving cell are represented,Represent the raw modulation symbols of serving cell downlink.

So that first community is using single current BF transmittings as an example, according to the BF weights of first community to the hair corresponding to first community Passage progress channel correcting is penetrated to be represented with below equation：

Wherein,The BF weighting base band data signals of the transmission channel transmitting corresponding to first community are represented,Represent the raw modulation symbols of first community downlink.

707, according to the wave beam forming result of the transmission channel of serving cell and/or the wave beam forming result pair of first community The transmission channel of serving cell and/or the transmission channel of first community carry out channel correcting.

When serving cell and first community joint service for a UE, it is necessary to meet conditionAbility So that UE obtains the gain of the associated transmissions of serving cell and first community.

When carrying out channel correcting to serving cell and first community, also channel correcting can be carried out using three kinds of modes.

In the embodiment of the present invention, by the down channel phase difference between serving cell and first community to crossing serving cell Channel correcting is carried out with first community so that crosses the transceiver channel of serving cell and first community in the same subcarrier of synchronization Correction after receive channel response with after the correction of the same subcarrier of synchronization hair channel response ratio be equal or approximately equal, So that communication system can obtain the array gain that multiple cell coherent superposition is brought, the multiple spot of communication system is further improved The performance of joint transmission.

The method of the embodiment of the present invention, it is also extrapolated in the scene that multiple cells have phase difference.Now, can will wherein One cell is set to benchmark cell, and remaining cell is identical with the phase of benchmark cell by correcting phase.

801, first base station sends MDT triggering commands.

Step 801 is similar with Fig. 7 step 701, and the embodiment of the present invention will not be repeated here.

The down channel phase difference of 802, UE measurement serving cells and second community.

After UE determines most strong jamming adjacent area, it can further measure to obtain the down channel of serving cell and most strong jamming adjacent area Phase difference.In the embodiment of the present invention, it is assumed that comprising the second community for belonging to the administration of the second base station in most strong jamming adjacent area, be designated as Cell1, serving cell are designated as Cell0.Wherein, the second base station and first base station are not same base stations.

803, UE send MDT message to first base station, carry serving cell and the down channel phase difference of second community.

804, first base station receives MDT message, obtains serving cell and the down channel phase difference of second community.

Step 803, step 804 are similar with Fig. 7 step 703, step 704, and the embodiment of the present invention will not be repeated here.

805, first base station sends serving cell and the down channel phase difference of second community to the second base station.

Specifically, the code book for the down channel phase difference for representing serving cell and second community can be sent to by first base station Second base station.

806, first base station determines that the BF of serving cell is weighed according to the down channel phase difference of serving cell and second community Value.

807, the second base station determines that the BF of second community is weighed according to the down channel phase difference of serving cell and second community Value.

In step 806 and 807, the step of method of serving cell and the BF weights of second community refers to Fig. 7 is determined 705, the embodiment of the present invention will not be repeated here.

808, first base station carries out carry out wave beam forming according to the BF weights of serving cell to the transmission channel of serving cell.

809, the second base station carries out wave beam forming according to the BF weights of second community to the transmission channel of second community.

In step 808 and 809, the method that wave beam forming is carried out to serving cell and the transmission channel of second community refers to Fig. 7 step 706, the embodiment of the present invention will not be repeated here.

809, transmission channel of the first base station according to the wave beam forming result of the transmission channel of serving cell to serving cell Transmission channel carry out channel correcting.

810, transmission channel of second base station according to the wave beam forming result of the transmission channel of second community to second community Transmission channel carry out channel correcting.

Similarly, the method that channel correcting is carried out to serving cell and the transmission channel of second community refers to Fig. 7 step Rapid 707, the embodiment of the present invention will not be repeated here.

In the embodiment of the present invention, by the down channel phase difference between serving cell and second community to crossing serving cell Channel correcting is carried out with second community so that crosses the transceiver channel of serving cell and second community in the same subcarrier of synchronization Correction after receive channel response with after the correction of the same subcarrier of synchronization hair channel response ratio be equal or approximately equal, So that communication system can obtain the array gain that multiple cell coherent superposition is brought, the multiple spot of communication system is further improved The performance of joint transmission.

Fig. 9 is the another method flow chart of channel correcting of the embodiment of the present invention.Fig. 9 method is performed by UE.

901, UE receive the MDT triggering commands that first base station is sent.

The measurement item indicating bit of 902, the UE in the MDT triggering commands is measured to obtain at least one of the UE The descending channel information of cell.

903, the UE send MDT message to first base station.

Wherein, for first base station to administer the base station of the serving cell of the UE, the MDT message carries at least one small of the UE The descending channel information in area, so that first base station is according to the descending channel information of the UE, realize the receipts at least one cell Send out the channel correcting of passage so that same in synchronization per transceiver channel all the way in any of at least one cell cell It is equal with the ratio that channel response is sent out after the correction of the same subcarrier of synchronization that channel response is received after the correction of one subcarrier.

In the embodiment of the present invention, UE is according to the MDT triggering commands of base station side, by MDT message to base station feedback at least one The descending channel information of individual cell, so that base station carries out channel correcting to the transceiver channel of at least one cell so that this is extremely Passage sound is received after the correction of the same subcarrier of synchronization per transceiver channel all the way in any of few cell cell Should with after the correction of the same subcarrier of synchronization send out channel response ratio it is equal so that communication system can obtain it is small The array gain that multiple antennas coherent superposition is brought in area, improve the performance of the multi-point joint transmission of communication system.

Further, further, the passage school to the transceiver channel corresponding at least one cell of UE measurements is realized Just also include：So that the transceiver channel for the cell that any two joint sends signal is same in synchronization at least one cell It is equal with the ratio that channel response is sent out after the correction of the same subcarrier of synchronization that channel response is received after the correction of one subcarrier.It is logical Cross to joint send signal cell transceiver channel it is further corrected, enable to communication system to obtain multiple cell and be concerned with The array gain that stacked tape comes, further improve the performance of the multi-point joint transmission of communication system.

Alternatively, as one embodiment, the measurement item indicating bit in the MDT triggering commands is used to indicate UE measurements simultaneously Feed back the downlink channel response of at least one cell.Now, step 902 it is specific can be achieved be：The UE is according to the MDT triggering commands In measurement item indicating bit measure to obtain the downlink channel response of at least one cell.Wherein, the MDT message can carry The downlink channel response of one or more of at least one cell cell, so that first base station is small according to the one or more The downlink channel response in area, channel correcting is carried out to the transceiver channel corresponding to one or more cells.

Alternatively, in a kind of specific implementation of the present embodiment, the downlink channel response is rung for downlink frequency domain channel Should.Now, step 902 it is specific can be achieved be：Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain Take the downlink frequency domain channel response of at least one cell.

Alternatively, in another specific implementation of the present embodiment, the downlink channel response is descending time domain channel Response.Now, step 902 it is specific can be achieved be：Measurement item indicating bits of the UE in the MDT triggering commands measure with The downlink frequency domain channel response of at least one cell is obtained, and the downlink frequency domain channel response is converted into descending time domain channel and rung Should.

Alternatively, as another embodiment, the measurement item indicating bit in the MDT triggering commands is used to indicate that the UE is measured And feed back the down channel phase difference between at least one neighbor cell and the serving cell of the UE.Now, step 902 specifically may be used It is embodied as：Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain at least one adjacent of the UE Down channel phase difference between cell and the serving cell of the UE.Wherein, it is at least one adjacent small can to carry this for the MDT message Down channel phase difference in area between one or more neighbor cells and the serving cell of the UE, so that first base station is according to this Down channel phase difference between one or more neighbor cells and the serving cell of the UE, to one or more neighbor cells Corresponding transceiver channel, and the transceiver channel progress channel correcting corresponding to the serving cell of the UE.

UE realizes the specific embodiment of the above method, refers to Fig. 3 to embodiment illustrated in fig. 8, the embodiment of the present invention is herein Repeat no more.

Figure 10 is the structural representation of base station of the embodiment of the present invention 1000.As shown in Figure 10, base station 1000 may include：Send Unit 1001, receiving unit 1002 and channel correction unit 1003, wherein,

Transmitting element 1001, for sending MDT triggering commands to UE.

Receiving unit 1002, for receiving the MDT message of UE feedbacks.

Channel correction unit 1003, for the descending channel information of at least one cell measured according to the UE, realization pair The channel correcting of transceiver channel corresponding at least one cell of UE measurements so that any of at least one cell is small Channel response and the same sub- load of synchronization are received after the correction of the same subcarrier of synchronization per transceiver channel all the way in area The ratio that channel response is sent out after the correction of ripple is equal or approximately equal.

In the embodiment of the present invention, base station 1000 in MDT triggering commands by indicating UE feedback of down channel information, and root According to the descending channel information of at least one cell of UE feedbacks, realize and the transceiver channel of at least one cell (is received and sent out Penetrate passage) channel correcting so that in cell transceiver channel received after the correction of the same subcarrier of synchronization channel response with The ratio that channel response is sent out after the correction of the same subcarrier of synchronization is equal or approximately equal, so that communication system can The array gain that multiple antennas coherent superposition is brought in cell is obtained, improves the performance of the multi-point joint transmission of communication system.

Further, in the descending channel information of at least one cell for being measured according to the UE, realize and the UE is surveyed Amount at least one cell corresponding to transceiver channel channel correcting during, channel correction unit 1003 be additionally operable to so that Any two joint sends the transceiver channel of the cell of signal in the school of the same subcarrier of synchronization at least one cell It is equal with the ratio that channel response is sent out after the correction of the same subcarrier of synchronization just to receive channel response afterwards.The embodiment of the present invention In, corrected by the way that the transceiver channel of the cell to joint transmission signal is further, how small enable to communication system to obtain The array gain that area's coherent superposition is brought, further improve the performance of the multi-point joint transmission of communication system.

Alternatively, as one embodiment, the measurement item indicating bit is used to indicate that the UE is measured and fed back at least one small The downlink channel response in area, the UE measurement at least one cell in first community be base station 1000 administer cell, the MDT Message carries the downlink channel response of first community, and base station 1000 may also include acquiring unit 1004, for obtaining first community Up channel response；Now, channel correction unit 1003 is particularly used according to the downlink channel response of first community and upper Row channel response, channel correcting is carried out in the transceiver channel corresponding to first community to base station 1000.

Alternatively, in a kind of concrete implementation mode of the present embodiment, the downlink channel response of first community includes：Base 1000 receptions that the UE is reached in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to first community of standing are led to The first downlink frequency domain channel response during road.The up channel response of first community includes：The uplink pilot signal of first community First up domain channel response of the base station 1000 at least receiving channel all the way corresponding to first community is reached, wherein, Base station 1000 corresponding to first community at least all the way receiving channel and base station 1000 at least one corresponding to first community Road transmission channel corresponds.Responded for the downlink channel response according to first community and up channel, to base station 1000 During the transceiver channel corresponding to first community carries out channel correcting, channel correction unit 1003 is specifically used for：According to The first downlink frequency domain channel response and the first up domain channel response, to base station 1000 in the receipts corresponding to first community Send out passage and carry out channel correcting；Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase Information, the first up domain channel response include amplitude and phase information or only include phase information.

Alternatively, in another concrete implementation mode of the present embodiment, the downlink channel response of first community can wrap Include base station 1000 and reach connecing for the UE in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to first community The first downlink frequency domain channel response and first when receiving passage specify the ratio between parameter；Acquiring unit 1004 is particularly used in The uplink pilot signal for obtaining first community reaches base station 1000 at least the of receiving channel all the way corresponding to first community One up domain channel response and second specify parameter between ratio, wherein, base station 1000 corresponding to first community extremely Few receiving channel all the way and base station 1000 corresponding to first community at least transmission channel corresponds all the way；Channel correcting list Member 1003 be particularly used according to the first downlink frequency domain channel response and first specify parameter between ratio, and this first Ratio between up domain channel response and the second specified parameter, to base station 1000 in the transceiver channel corresponding to first community Carry out channel correcting；Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase information, should First up domain channel response includes amplitude and phase information or only includes phase information, and the first specified parameter is first small Downlink frequency domain channel response corresponding to transmission channel is specified in the downlink frequency domain channel response in area, the second specified parameter is first Up domain channel response corresponding to receiving channel is specified in the up domain channel response of cell, this specifies receiving channel with being somebody's turn to do Specify transmission channel corresponding.

Alternatively, in another concrete implementation mode of the present embodiment, the downlink channel response of first community can wrap Include base station 1000 and reach connecing for the UE in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to first community The first descending time domain channel response during passage is received,

Base station 1000 also includes time-frequency domain converting unit, for the first descending time domain channel response to be converted under first Row domain channel response；

The up channel response of first community includes：It is small first that the uplink pilot signal of first community reaches base station 1000 Corresponding to area at least all the way receiving channel when the first up domain channel response, wherein, base station 1000 is in first community institute It is corresponding at least all the way receiving channel and base station 1000 corresponding to first community at least transmission channel corresponds all the way；

Channel correction unit 1003 is specifically used for being believed according to the first downlink frequency domain channel response and the first up frequency domain Road is responded, and channel correcting is carried out in the transceiver channel corresponding to first community to base station 1000；

Alternatively, in another embodiment of the present invention, the measurement item indicating bit is used to indicate that the UE is measured and fed back The downlink channel response of at least one cell, the UE measurement at least one cell in second community for the second base station administration Cell, the second base station and base station 1000 are not same base stations, and the MDT message carries the downlink channel response of second community, are led to Channel correction unit 1003 is specifically used for：The downlink channel response of second community is sent to the second base station by transmitting element 1001, So that the second base station carries out channel correcting to the second base station in the transceiver channel corresponding to second community.

Alternatively, in yet another embodiment of the present invention, the measurement item indicating bit is used to indicate that the UE is measured and fed back Down channel phase difference between at least one neighbor cell and the serving cell of the UE, the MDT message carry the service of the UE Down channel phase difference between cell and first community, first community is the neighbor cell of the UE, and first community belongs to base Stand the cells of 1000 administrations, channel correction unit 1003 is specifically used for：According between the serving cell of the UE and first community Down channel phase difference, determine the BF weights of serving cell and the BF weights of first community；According to the BF weights pair of serving cell Transmission channel corresponding to serving cell carries out wave beam forming, and according to the BF weights of first community to corresponding to first community Transmission channel carries out wave beam forming；According to the wave beam forming result of serving cell and first community to the hair corresponding to serving cell Penetrate passage and the transmission channel corresponding to first community carries out channel correcting.

Alternatively, in yet another embodiment of the present invention, the measurement item indicating bit is used to indicate that the UE is measured and fed back Down channel phase difference between at least one neighbor cell and the serving cell of the UE, the MDT message carry the service of the UE Down channel phase difference between cell and second community, second community is the neighbor cell of the UE, and second community belongs to the The cell of two base stations administration, the second base station and base station 1000 are not same base stations, and channel correction unit 1003 is specifically used for：Root Wave beam forming is carried out to the transmission channel corresponding to serving cell according to the BF weights of serving cell, and according to the wave beam of serving cell Figuration result, channel correcting is carried out to the transmission channel corresponding to serving cell；And/or by transmitting element 1001 to the second base Stand send the UE serving cell and second community between down channel phase difference, so that the second base station determines second community BF weights, wave beam forming is carried out to the transmission channel corresponding to second community, and according to the wave beam forming result of second community, it is right Transmission channel corresponding to second community carries out channel correcting.

In addition, base station 1000 can also carry out Fig. 2 method, and possesses work(of the first base station in Fig. 2 to embodiment illustrated in fig. 8 Can, the embodiment of the present invention will not be repeated here.

Figure 11 is the structural representation of user equipment of the embodiment of the present invention 1100.User equipment 1100 may include：Receive single Member 1101, acquiring unit 1102 and transmitting element 1103, wherein,

Receiving unit 1101, for receiving the MDT triggering commands of first base station transmission, wherein, first base station is used for administration The base station of the serving cell of family equipment 1100, measurement item indicating bit is included in the MDT triggering commands, the measurement item indicating bit is used for Instruction user equipment 1100 measures and feeds back the descending channel information of at least one cell.

Acquiring unit 1102, measured for the measurement item indicating bit in the MDT triggering commands to obtain user The descending channel information of at least one cell of equipment 1100.

Transmitting element 1103, for sending MDT message to first base station, the MDT message carries user equipment 1100 extremely The descending channel information of a few cell, so that first base station is according to the descending channel information of user equipment 1100, is realized to this The channel correcting of the transceiver channel of at least one cell so that often receiving and dispatching all the way in any of at least one cell cell Passage receives channel response with sending out passage after the correction of the same subcarrier of synchronization after the correction of the same subcarrier of synchronization The ratio of response is equal or approximately equal.

In the embodiment of the present invention, user equipment 1100 by the MDT triggering commands according to base station side, by MDT message to The descending channel information of at least one cell of base station feedback, so that row of channels is entered in base station to the transceiver channel of at least one cell Correction so that transceiver channel receives channel response and the same son of synchronization after the correction of the same subcarrier of synchronization in cell The ratio that channel response is sent out after the correction of carrier wave is equal or approximately equal, so that communication system can be obtained in cell more days The array gain that line coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

Further, the channel correcting of the transceiver channel of at least one cell is also included：So that this is at least one small The transceiver channel for the cell that any two joint sends signal receives passage sound after the correction of the same subcarrier of synchronization in area Should be equal with sending out the ratio of channel response after the correction of the same subcarrier of synchronization.In the embodiment of the present invention, by joint The transceiver channel of the cell of transmission signal is further to be corrected, and is enabled to communication system to obtain multiple cell coherent superposition and is brought Array gain, further improve communication system multi-point joint transmission performance.

Alternatively, as one embodiment, the measurement item indicating bit in the MDT triggering commands is used for instruction user equipment 1100 measure and feed back the downlink channel response of at least one cell；Acquiring unit 1102 is specifically used for being referred to according to MDT triggerings Measurement item indicating bit in order measures to be included with obtaining the descending channel information of user equipment 1100：Triggered according to the MDT Measurement item indicating bit in instruction is measured to obtain the downlink channel response of at least one cell；Wherein, the MDT message is taken Downlink channel response with one or more of at least one cell cell, so that first base station is according to the one or more The downlink channel response of cell, channel correcting is carried out to the transceiver channel corresponding to one or more cells.

Alternatively, in a kind of specific implementation of the present embodiment, the downlink channel response is rung for downlink frequency domain channel Should, the measurement item indicating bit that acquiring unit 1102 is specifically used in the MDT triggering commands is measured to obtain at least one The downlink frequency domain channel response of individual cell.

Alternatively, in another specific implementation of the present embodiment, the downlink channel response is descending time domain channel Response, acquiring unit 1102 are specifically used for：Measurement item indicating bit in the MDT triggering commands is measured to obtain at least The downlink frequency domain channel response of one cell, and the downlink frequency domain channel response is converted into descending time domain channel response.

Alternatively, as another embodiment, the measurement item indicating bit in the MDT triggering commands is used to indicate that the user sets It is standby to measure and feed back the down channel phase difference between at least one neighbor cell and the serving cell of the user equipment；Obtain single Member 1102 is specifically used for：Measurement item indicating bit in the MDT triggering commands is measured to obtain the user equipment extremely Down channel phase difference between a few neighbor cell and the serving cell of the user equipment；Wherein, the MDT message, which carries, is somebody's turn to do Down channel phase at least one neighbor cell between one or more neighbor cells and the serving cell of the user equipment Difference, so that first base station is according to the down channel phase between one or more neighbor cells and the serving cell of the user equipment Potential difference, to the transceiver channel corresponding to one or more neighbor cells, and corresponding to the serving cell of the user equipment Transceiver channel carries out channel correcting.

In addition, user equipment 1100 can also carry out Fig. 9 method, and possesses work(of the UE in Fig. 3 to embodiment illustrated in fig. 9 Can, the embodiment of the present invention will not be repeated here.

Figure 12 is the structural representation of base station of the embodiment of the present invention 1200.Base station 1200 may include processor 1202, storage Device 1203, transmitter 1201 and receiver 1203.

Receiver 1204, transmitter 1201, processor 1202 and memory 1203 are connected with each other by the system of bus 1206. Bus 1206 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus, data/address bus, Controlling bus etc..For ease of representing, only represented in Figure 12 with a four-headed arrow, it is not intended that an only bus or one kind The bus of type.In specific application, transmitter 1201 and receiver 1204 may be coupled to antenna 1205.

Memory 1203, for depositing program.Specifically, program can include program code, and described program code includes Computer-managed instruction.Memory 1203 can include read-only storage and random access memory, and be carried to processor 1202 For instruction and data.Memory 1203 may include high-speed RAM memory, it is also possible to also including nonvolatile memory (non- Volatile memory), a for example, at least magnetic disk storage.

Processor 1202, the program that memory 1203 is deposited is performed, and specifically for performing following operate：

It is used to send MDT triggering commands to UE by transmitter 1201, wherein, measurement item is included in the MDT triggering commands Indicating bit, the measurement item indicating bit are used to indicate that the UE is measured and fed back the descending channel information of at least one cell；

The MDT message of UE feedbacks is received by receiver 1204, wherein, the MDT message carries UE measurements at least The descending channel information of one cell；

According to the descending channel information of the UE at least one cells measured, at least one cell to UE measurements is realized The channel correcting of corresponding transceiver channel so that existing per transceiver channel all the way in any of at least one cell cell Channel response is received after the correction of the same subcarrier of synchronization with sending out channel response after the correction of the same subcarrier of synchronization Ratio is equal or approximately equal.

The method that the above-mentioned first base station as disclosed in Fig. 2 any embodiments into Fig. 8 of the present invention performs can apply to locate Manage in device 1202, or realized by processor 1202.Processor 1202 is probably a kind of IC chip, has the place of signal Reason ability.In implementation process, each step of the above method can pass through the integrated logic circuit of the hardware in processor 1202 Or the instruction of software form is completed.Above-mentioned processor 1202 can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit (Network Processor, abbreviation NP) etc.；May be used also Be digital signal processor (DSP), application specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) or other can compile Journey logical device, discrete gate or transistor logic, discrete hardware components.It can realize or perform the embodiment of the present invention In disclosed each method, step and logic diagram.General processor can be microprocessor or the processor can also be Any conventional processor etc..The step of method with reference to disclosed in the embodiment of the present invention, can be embodied directly at hardware decoding Reason device performs completion, or performs completion with the hardware in decoding processor and software module combination.Software module can be located at Random access memory, flash memory, read-only storage, programmable read only memory or electrically erasable programmable memory, register etc. In the ripe storage medium in this area.The storage medium is located at memory 1203, and processor 1202 is read in memory 1203 Information, with reference to the step of its hardware completion above method.

In the embodiment of the present invention, base station 1200 in MDT triggering commands by indicating UE feedback of down channel information, and root According to the descending channel information of at least one cell of UE feedbacks, realize and the transceiver channel of at least one cell (is received and sent out Penetrate passage) channel correcting so that in cell transceiver channel received after the correction of the same subcarrier of synchronization channel response with The ratio that channel response is sent out after the correction of the same subcarrier of synchronization is equal or approximately equal, so that communication system can The array gain that multiple antennas coherent superposition is brought in cell is obtained, improves the performance of the multi-point joint transmission of communication system.

Further, in the descending channel information of at least one cell for being measured according to the UE, realize and the UE is surveyed Amount at least one cell corresponding to transceiver channel channel correcting during, processor 1202 be additionally operable to so that this at least The transceiver channel for the cell that any two joint sends signal is received after the correction of the same subcarrier of synchronization in one cell Channel response is equal with the ratio that channel response is sent out after the correction of the same subcarrier of synchronization.In the embodiment of the present invention, pass through The transceiver channel of cell to combining transmission signal is further to be corrected, and enables to communication system to obtain multiple cell relevant folded Add the array gain brought, further improve the performance of the multi-point joint transmission of communication system.

In addition, base station 1200 can also carry out Fig. 2 method, and possesses work(of the first base station in Fig. 2 to embodiment illustrated in fig. 8 Can, the embodiment of the present invention will not be repeated here.

Figure 13 is the structural representation of user equipment of the embodiment of the present invention 1300.User equipment 1300 may include processor 1302nd, memory 1303, transmitter 1301 and receiver 1303.

Receiver 1304, transmitter 1301, processor 1302 and memory 1303 are connected with each other by the system of bus 1306. Bus 1306 can be isa bus, pci bus or eisa bus etc..The bus can be divided into address bus, data/address bus, Controlling bus etc..For ease of representing, only represented in Figure 13 with a four-headed arrow, it is not intended that an only bus or one kind The bus of type.In specific application, transmitter 1301 and receiver 1304 may be coupled to antenna 1305.

Memory 1303, for depositing program.Specifically, program can include program code, and described program code includes Computer-managed instruction.Memory 1303 can include read-only storage and random access memory, and be carried to processor 1302 For instruction and data.Memory 1303 may include high-speed RAM memory, it is also possible to also including nonvolatile memory (non- Volatile memory), a for example, at least magnetic disk storage.

Processor 1302, the program that memory 1303 is deposited is performed, and specifically for performing following operate：

The MDT triggering commands of first base station transmission are received by receiver 1304, wherein, first base station sets for administration user For the base station of 1300 serving cell, measurement item indicating bit is included in the MDT triggering commands, the measurement item indicating bit is used to indicate User equipment 1300 measures and feeds back the descending channel information of at least one cell；

Measurement item indicating bit in the MDT triggering commands is measured to obtain at least one of user equipment 1300 The descending channel information of cell；

MDT message is sent to first base station by transmitter 1301, wherein, the MDT message carries user equipment 1300 The descending channel information of at least one cell, so that first base station is according to the descending channel information of user equipment 1300, realization pair The channel correcting of the transceiver channel of at least one cell so that often receiving all the way in any of at least one cell cell It is logical with being sent out after the correction of the same subcarrier of synchronization that hair passage receives channel response after the correction of the same subcarrier of synchronization The ratio of road response is equal.

The method that the above-mentioned user equipment as disclosed in Fig. 3 any embodiments into Fig. 9 of the present invention performs can apply to locate Manage in device 1302, or realized by processor 1302.Processor 1302 is probably a kind of IC chip, has the place of signal Reason ability.In implementation process, each step of the above method can pass through the integrated logic circuit of the hardware in processor 1302 Or the instruction of software form is completed.Above-mentioned processor 1302 can be general processor, including central processing unit (Central Processing Unit, abbreviation CPU), network processing unit (Network Processor, abbreviation NP) etc.；May be used also Be digital signal processor (DSP), application specific integrated circuit (ASIC), ready-made programmable gate array (FPGA) or other can compile Journey logical device, discrete gate or transistor logic, discrete hardware components.It can realize or perform the embodiment of the present invention In disclosed each method, step and logic diagram.General processor can be microprocessor or the processor can also be Any conventional processor etc..The step of method with reference to disclosed in the embodiment of the present invention, can be embodied directly at hardware decoding Reason device performs completion, or performs completion with the hardware in decoding processor and software module combination.Software module can be located at Random access memory, flash memory, read-only storage, programmable read only memory or electrically erasable programmable memory, register etc. In the ripe storage medium in this area.The storage medium is located at memory 1303, and processor 1302 is read in memory 1303 Information, with reference to the step of its hardware completion above method.

In the embodiment of the present invention, user equipment 1300 by the MDT triggering commands according to base station side, by MDT message to The descending channel information of at least one cell of base station feedback, so that row of channels is entered in base station to the transceiver channel of at least one cell Correction so that transceiver channel receives channel response and the same son of synchronization after the correction of the same subcarrier of synchronization in cell The ratio that channel response is sent out after the correction of carrier wave is equal or approximately equal, so that communication system can be obtained in cell more days The array gain that line coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

Further, processor 1302 is realized also includes to the channel correcting of the transceiver channel of at least one cell：Make The transceiver channel of the cell of any two joint transmission signal at least one cell is obtained in the same subcarrier of synchronization It is equal with the ratio that channel response is sent out after the correction of the same subcarrier of synchronization that channel response is received after correction.The embodiment of the present invention In, corrected by the way that the transceiver channel of the cell to joint transmission signal is further, how small enable to communication system to obtain The array gain that area's coherent superposition is brought, further improve the performance of the multi-point joint transmission of communication system.

In addition, user equipment 1300 can also carry out Fig. 9 method, and possesses work(of the UE in Fig. 3 to embodiment illustrated in fig. 9 Can, the embodiment of the present invention will not be repeated here.

Figure 14 is the structural representation of communication system of the embodiment of the present invention 1400.Communication system 1400 may include first base station 1401 and/or user equipment 1402.Wherein, first base station 1401 can be the base shown in base station 1000 or Figure 12 shown in Figure 10 Stand 1200, user equipment 1402 can be the user equipment 1300 shown in user equipment 11000 or Figure 13 shown in Figure 11.

The communication system 1400 of the embodiment of the present invention, first base station 1401 by MDT triggering commands instruction user set Standby 1402 feedback of down channel information, and the descending channel information at least one cell fed back according to user equipment 1402, it is real Now to the channel correcting of the transceiver channel of at least one cell (receive and transmission channel), so that communication system can obtain The array gain brought to multiple cell coherent superposition, improve the performance of the multi-point joint transmission of communication system.

Alternatively, communication system 1400 may also include the second base station 1402.Wherein, at least the one of the measurement of user equipment 1402 Second community in individual cell is the cell of the second base station 1402 administration.Second base station 1402 is used for what is sent according to first base station Channel correcting information carries out channel correcting to the transceiver channel of second community.

Those of ordinary skill in the art are it is to be appreciated that the list of each example described with reference to the embodiments described herein Member and algorithm steps, it can be realized with the combination of electronic hardware or computer software and electronic hardware.These functions are actually Performed with hardware or software mode, application-specific and design constraint depending on technical scheme.Professional and technical personnel Described function can be realized using distinct methods to each specific application, but this realization is it is not considered that exceed The scope of the present invention.

It is apparent to those skilled in the art that for convenience and simplicity of description, the system of foregoing description, The specific work process of device and unit, the corresponding process in preceding method embodiment is may be referred to, will not be repeated here.

In several embodiments provided herein, it should be understood that disclosed systems, devices and methods, can be with Realize by another way.For example, device embodiment described above is only schematical, for example, the unit Division, only a kind of division of logic function, can there is other dividing mode, such as multiple units or component when actually realizing Another system can be combined or be desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or The mutual coupling discussed or direct-coupling or communication connection can be the indirect couplings by some interfaces, device or unit Close or communicate to connect, can be electrical, mechanical or other forms.

The unit illustrated as separating component can be or may not be physically separate, show as unit The part shown can be or may not be physical location, you can with positioned at a place, or can also be distributed to multiple On NE.Some or all of unit therein can be selected to realize the mesh of this embodiment scheme according to the actual needs 's.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also That unit is individually physically present, can also two or more units it is integrated in a unit.

If the function is realized in the form of SFU software functional unit and is used as independent production marketing or in use, can be with It is stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially in other words The part to be contributed to prior art or the part of the technical scheme can be embodied in the form of software product, the meter Calculation machine software product is stored in a storage medium, including some instructions are causing a computer equipment (can be People's computer, server, or network equipment etc.) perform all or part of step of each embodiment methods described of the present invention. And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited Reservoir (RAM, Random Access Memory), magnetic disc or CD etc. are various can be with the medium of store program codes.

The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained Cover within protection scope of the present invention.Therefore, protection scope of the present invention described should be defined by scope of the claims.

Claims

A kind of 1. channel correcting method, it is characterised in that including：

First base station is sent to user equipment (UE) minimizes drive test MDT triggering commands, and measurement item is included in the MDT triggering commands Indicating bit, the measurement item indicating bit are used to indicate that the UE is measured and fed back the descending channel information of at least one cell；

The first base station receives the MDT message of the UE feedbacks, and the MDT message carries at least one small of the UE measurements The descending channel information in area；

The first base station is realized to UE measurements according to the descending channel information of the UE at least one cells measured The channel correcting of transceiver channel corresponding at least one cell so that every in any of described at least one cell cell Transceiver channel receives the correction of channel response and the same subcarrier of synchronization after the correction of the same subcarrier of synchronization all the way It is equal that the ratio of channel response is sent out afterwards, or causes any two-way transceiver channel in any of at least one cell cell Channel response is received after the correction of the same subcarrier of synchronization with sending out channel response after the correction of the same subcarrier of synchronization The difference of ratio be less than predetermined threshold.
2. the method as described in claim 1, it is characterised in that described to realize that at least one cell institute measured the UE is right The channel correcting for the transceiver channel answered also includes：So that any two joint sends the cell of signal at least one cell Transceiver channel the correction of channel response and the same subcarrier of synchronization is received after the correction of the same subcarrier of synchronization after The ratio of hair channel response is equal, or causes the transmitting-receiving of the cell of any two joint transmission signal at least one cell Passage receives channel response with sending out passage after the correction of the same subcarrier of synchronization after the correction of the same subcarrier of synchronization The difference of the ratio of response is less than predetermined threshold.
3. method as claimed in claim 1 or 2, it is characterised in that the measurement item indicating bit is used to indicate the UE measurements And the downlink channel response of at least one cell is fed back, the first community at least one cell of UE measurement is described the The cell of one base station administration, the MDT message carry the downlink channel response of the first community,

Methods described also includes：The first base station obtains the up channel response of the first community；

The first base station is according to the descending channel information of the first community, to the first base station in the first community institute Corresponding transceiver channel, which carries out channel correcting, to be included：The first base station is according to the downlink channel response of the first community and upper Row channel response, channel correcting is carried out in the transceiver channel corresponding to the first community to the first base station.
4. method as claimed in claim 3, it is characterised in that the downlink channel response of the first community includes：Described One base station reaches the UE's in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to the first community The first downlink frequency domain channel response during receiving channel；

The up channel response of the first community includes：The uplink pilot signal of the first community reaches the first base station The first up domain channel response at least receiving channel all the way corresponding to the first community, wherein, described first Base station corresponding to the first community at least all the way receiving channel and the first base station corresponding to the first community At least all the way transmission channel correspond；

The first base station is responded according to the downlink channel response and up channel of the first community, and the first base station is existed Transceiver channel corresponding to the first community, which carries out channel correcting, to be included：The first base station is according to first downlink frequency domain Channel response and the first up domain channel response, lead to the first base station in the transmitting-receiving corresponding to the first community Road carries out channel correcting；

Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase information, and described first Up domain channel response includes amplitude and phase information or only includes phase information.
5. method as claimed in claim 3, it is characterised in that the downlink channel response of the first community includes：Described One base station reaches the UE's in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to the first community The first downlink frequency domain channel response and first during receiving channel specify the ratio between parameter；

The up channel response of the first community includes：The uplink pilot signal of the first community reaches the first base station Corresponding to the first community at least all the way the first of receiving channel the up domain channel response with second specify parameter it Between ratio, wherein, the first base station is at least receiving channel and first base all the way corresponding to the first community Stand corresponding to the first community at least all the way transmission channel correspond；

The first base station is responded according to the downlink channel response and up channel of the first community, and the first base station is existed Transceiver channel corresponding to the first community, which carries out channel correcting, to be included：The first base station is according to first downlink frequency domain Ratio between channel response and the first specified parameter, and the first up domain channel response refer to described second Determine the ratio between parameter, channel correcting is carried out in the transceiver channel corresponding to the first community to the first base station；

Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase information, and described first Up domain channel response includes amplitude and phase information or only includes phase information, and described first specifies parameter as described first Downlink frequency domain channel response corresponding to transmission channel is specified in the downlink frequency domain channel response of cell, the described second specified parameter is Up domain channel response corresponding to receiving channel is specified in the up domain channel response of the first community, described specify connects It is corresponding with the specified transmission channel to receive passage.
6. method as claimed in claim 3, it is characterised in that the downlink channel response of the first community includes：Described One base station reaches the UE's in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to the first community The first descending time domain channel response during receiving channel,

Methods described also includes：Described first descending time domain channel response is converted into the first downlink frequency domain letter by the first base station Road responds；

The up channel response of the first community includes：The uplink pilot signal of the first community reaches the first base station The first up domain channel response at least receiving channel all the way corresponding to the first community, wherein, described first Base station corresponding to the first community at least all the way receiving channel and the first base station corresponding to the first community At least all the way transmission channel correspond；

The first base station is responded according to the downlink channel response and up channel of the first community, and the first base station is existed Transceiver channel corresponding to the first community, which carries out channel correcting, to be included：The first base station is according to first downlink frequency domain Channel response and the first up domain channel response, lead to the first base station in the transmitting-receiving corresponding to the first community Road carries out channel correcting；

Wherein, the first downlink frequency domain channel response and the first descending time domain channel response include amplitude and phase is believed Breath, the first up domain channel response include amplitude and phase information or only include phase information.
7. method as claimed in claim 1 or 2, is characterised by, the measurement item indicating bit is used to indicate the UE measurements simultaneously Feed back the downlink channel response of at least one cell, the second community at least one cell of the UE measurements is the second base station The cell of administration, second base station and the first base station are not same base stations, and it is small that the MDT message carries described second The downlink channel response in area,

The first base station is realized to UE measurements at least according to the descending channel information of the UE at least one cells measured The channel correcting of the transmission channel of one cell includes：

The first base station sends the downlink channel response of the second community to second base station, so as to second base station Channel correcting is carried out in the transceiver channel corresponding to the second community to second base station.
8. method as claimed in claim 1 or 2, it is characterised in that the measurement item indicating bit is used to indicate the UE measurements And the down channel phase difference between at least one neighbor cell and the UE serving cell is fed back, the MDT message carries Down channel phase difference between the serving cell and first community of the UE, the first community are the adjacent small of the UE Area, and the first community belongs to the cell of the first base station administration,

The first base station is realized to UE measurements at least according to the descending channel information of the UE at least one cells measured The channel correcting of transceiver channel corresponding to one cell includes：

The first base station determines institute according to the down channel phase difference between the serving cell of the UE and the first community State the wave beam forming BF weights of serving cell and the BF weights of the first community；

The first base station enters traveling wave according to the BF weights of the serving cell to the transmission channel corresponding to the serving cell Beam figuration, and wave beam forming is carried out to the transmission channel corresponding to the first community according to the BF weights of the first community；

The first base station is according to the wave beam forming result of the serving cell to the transmission channel corresponding to the serving cell Channel correcting is carried out, and/or the transmitting corresponding to the first community is led to according to the wave beam forming result of the first community Road carries out channel correcting.
9. method as claimed in claim 1 or 2, it is characterised in that the measurement item indicating bit is used to indicate the UE measurements And the down channel phase difference between at least one neighbor cell and the UE serving cell is fed back, the MDT message carries Down channel phase difference between the serving cell and second community of the UE, the second community are the adjacent small of the UE Area, and the second community belongs to the cell of the second base station administration, second base station is not same with the first base station Base station,

The first base station is realized to UE measurements at least according to the descending channel information of the UE at least one cells measured The channel correcting of transceiver channel corresponding to one cell includes：

The first base station determines institute according to the down channel phase difference between the serving cell of the UE and the second community The wave beam forming BF weights of serving cell are stated, according to the BF weights of the serving cell to the transmitting corresponding to the serving cell Passage carries out wave beam forming, and according to the wave beam forming result of the serving cell, to the transmitting corresponding to the serving cell Passage carries out channel correcting；And/or

The first base station sends the descending letter between the serving cell of the UE and the second community to second base station Road phase difference, so that second base station determines the BF weights of the second community, to the transmitting corresponding to the second community Passage carries out wave beam forming, and according to the wave beam forming result of the second community, to the transmitting corresponding to the second community Passage carries out channel correcting.
A kind of 10. channel correcting method, it is characterised in that including：

User equipment (UE) receives the minimum drive test MDT triggering commands that first base station is sent, wherein the first base station is administration The base station of the serving cell of the UE, measurement item indicating bit is included in the MDT triggering commands, the measurement item indicating bit is used for Indicate that the UE is measured and fed back the descending channel information of at least one cell；

Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain at least one small of the UE The descending channel information in area；

The UE sends MDT message to the first base station, wherein, the MDT message carries at least one cell of the UE Descending channel information, so that the first base station is according to the descending channel information of the UE, realize to described at least one small The channel correcting of the transceiver channel in area so that every transceiver channel all the way in any of described at least one cell cell is same Channel response is received after the correction of one moment same subcarrier with sending out the ratio of channel response after the correction of the same subcarrier of synchronization It is worth equal.
11. method as claimed in claim 10, it is characterised in that the transceiver channel realized at least one cell Channel correcting also include：So that the transceiver channel for the cell that any two joint sends signal exists at least one cell Channel response is received after the correction of the same subcarrier of synchronization with sending out channel response after the correction of the same subcarrier of synchronization Ratio is equal.
12. the method as described in claim 10 or 11, it is characterised in that the measurement item indicating bit in the MDT triggering commands For indicating that the UE is measured and fed back the downlink channel response of at least one cell；

Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain the down channel of UE letter Breath includes：Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain at least one cell Downlink channel response；

The MDT message carries the downlink channel response of one or more of at least one cell cell, so as to described First base station is according to the downlink channel responses of one or more of cells, to the transmitting-receiving corresponding to one or more of cells Passage carries out channel correcting.
13. method as claimed in claim 12, it is characterised in that the downlink channel response is downlink frequency domain channel response,

Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain the descending of at least one cell Channel response includes：Measurement item indicating bits of the UE in the MDT triggering commands measures at least one to obtain The downlink frequency domain channel response of cell.
14. method as claimed in claim 12, it is characterised in that the downlink channel response is descending time domain channel response,

Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain the descending of at least one cell Channel response includes：

Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain the descending of at least one cell Domain channel response；The downlink frequency domain channel response is converted into descending time domain channel response by the UE.
15. the method as described in claim 10 or 11, it is characterised in that the measurement item indicating bit in the MDT triggering commands For indicating that the UE is measured and fed back the down channel phase between at least one neighbor cell and the UE serving cell Difference；

Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain the down channel of UE letter Breath includes：Measurement item indicating bits of the UE in the MDT triggering commands is measured to obtain at least the one of the UE Down channel phase difference between individual neighbor cell and the UE serving cell；

The MDT message carries one or more neighbor cells and the serving cell of the UE at least one neighbor cell Between down channel phase difference, so that the first base station is according to one or more of neighbor cells and the UE service Down channel phase difference between cell, to the transceiver channel corresponding to one or more of neighbor cells, and the UE Serving cell corresponding to transceiver channel carry out channel correcting.
A kind of 16. base station, it is characterised in that including：

Transmitting element, drive test MDT triggering commands are minimized for being sent to user equipment (UE), are included in the MDT triggering commands Measurement item indicating bit, the measurement item indicating bit are used to indicate that the UE is measured and fed back the down channel letter of at least one cell Breath；

Receiving unit, for receiving the MDT message of the UE feedbacks, the MDT message carries at least one of the UE measurements The descending channel information of cell；

Channel correction unit, for the descending channel information of at least one cell measured according to the UE, realize to the UE The channel correcting of transceiver channel corresponding at least one cell of measurement so that any of described at least one cell cell Interior receives channel response and the same subcarrier of synchronization per transceiver channel all the way after the correction of the same subcarrier of synchronization Correction after send out channel response ratio it is equal, or any two-way in any of described at least one cell cell is received It is logical with being sent out after the correction of the same subcarrier of synchronization that hair passage receives channel response after the correction of the same subcarrier of synchronization The difference of the ratio of road response is less than predetermined threshold.
17. base station as claimed in claim 16, it is characterised in that at least one cell for being measured according to the UE Descending channel information, realize the process of the channel correcting to the transceiver channel corresponding at least one cell of UE measurements In, the channel correction unit is additionally operable to cause the receipts of the cell of any two joint transmission signal at least one cell It is logical with being sent out after the correction of the same subcarrier of synchronization that hair passage receives channel response after the correction of the same subcarrier of synchronization The ratio of road response is equal, or causes the transceiver channel of the cell of any two joint transmission signal at least one cell Channel response is received after the correction of the same subcarrier of synchronization with sending out channel response after the correction of the same subcarrier of synchronization The difference of ratio be less than predetermined threshold.
18. the base station as described in claim 16 or 17, it is characterised in that the measurement item indicating bit is used to indicate that the UE is surveyed Measure and feed back the downlink channel response of at least one cell, the first community at least one cell of the UE measurements is described The cell of base station administration, the MDT message carry the downlink channel response of the first community,

The base station also includes acquiring unit, and the up channel for obtaining the first community responds；

The channel correction unit is specifically used for being responded according to the downlink channel response and up channel of the first community, to institute State base station and carry out channel correcting in the transceiver channel corresponding to the first community.
19. base station as claimed in claim 18, it is characterised in that the downlink channel response of the first community includes：It is described Base station reaches connecing for the UE in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to the first community Receive the first downlink frequency domain channel response during passage；

The up channel response of the first community includes：The uplink pilot signal of the first community reaches the base station in institute State corresponding to first community at least all the way receiving channel when the first up domain channel response, wherein, the base station is in institute State corresponding to first community at least all the way receiving channel and the base station corresponding to the first community at least riches all the way Penetrate passage one-to-one corresponding；

Responded for the downlink channel response according to the first community and up channel, it is small described first to the base station During transceiver channel corresponding to area carries out channel correcting, the channel correction unit is specifically used for：According to described first Downlink frequency domain channel response and the first up domain channel response, to the base station in the receipts corresponding to the first community Send out passage and carry out channel correcting；

Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase information, and described first Up domain channel response includes amplitude and phase information or only includes phase information.
20. base station as claimed in claim 18, it is characterised in that the downlink channel response of the first community includes：It is described Base station reaches connecing for the UE in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to the first community The first downlink frequency domain channel response and first when receiving passage specify the ratio between parameter；

The up channel response of the first community includes：The uplink pilot signal of the first community reaches the base station in institute State corresponding to first community at least all the way the first of receiving channel the up domain channel response and second specify parameter between Ratio, wherein, the base station corresponding to the first community at least all the way receiving channel and the base station described first Corresponding to cell at least all the way transmission channel correspond；

The channel correction unit is specifically used for：According to the first downlink frequency domain channel response with described first specify parameter it Between ratio, and the first up domain channel response and it is described second specify parameter between ratio, to the base station Channel correcting is carried out in the transceiver channel corresponding to the first community；

Wherein, the first downlink frequency domain channel response includes amplitude and phase information or only includes phase information, and described first Up domain channel response includes amplitude and phase information or only includes phase information, and described first specifies parameter as described first Downlink frequency domain channel response corresponding to transmission channel is specified in the downlink frequency domain channel response of cell, the described second specified parameter is Up domain channel response corresponding to receiving channel is specified in the up domain channel response of the first community, described specify connects It is corresponding with the specified transmission channel to receive passage.
21. base station as claimed in claim 18, it is characterised in that the downlink channel response of the first community includes：It is described Base station reaches connecing for the UE in the down-bound pilot frequency signal at least launched all the way on transmission channel corresponding to the first community The first descending time domain channel response during passage is received,

The base station also includes time-frequency domain converting unit, descending for the described first descending time domain channel response to be converted into first Domain channel response；

The up channel response of the first community includes：The uplink pilot signal of the first community reaches the base station in institute State corresponding to first community at least all the way receiving channel when the first up domain channel response, wherein, the base station is in institute State corresponding to first community at least all the way receiving channel and the base station corresponding to the first community at least riches all the way Penetrate passage one-to-one corresponding；

The channel correction unit is specifically used for：According to the first downlink frequency domain channel response and the first up frequency domain letter Road is responded, and channel correcting is carried out in the transceiver channel corresponding to the first community to the base station；

Wherein, the first downlink frequency domain channel response and the first descending time domain channel response include amplitude and phase is believed Breath, the first up domain channel response include amplitude and phase information or only include phase information.
22. the base station as described in claim 16 or 17, it is characterised in that the measurement item indicating bit is used to indicate that the UE is surveyed Measure and feed back the downlink channel response of at least one cell, the second community at least one cell of the UE measurements is second The cell of base station administration, second base station and the base station are not same base stations, and it is small that the MDT message carries described second The downlink channel response in area,

The channel correction unit is specifically used for：The second community is sent to second base station by the transmitting element Downlink channel response, so that second base station is carried out to second base station in the transceiver channel corresponding to the second community Channel correcting.
23. the base station as described in claim 16 or 17, it is characterised in that the measurement item indicating bit is used to indicate that the UE is surveyed Measure and feed back the down channel phase difference between at least one neighbor cell and the UE serving cell, the MDT message is taken Down channel phase difference between serving cell and first community with the UE, the first community are the adjacent small of the UE Area, and the first community belongs to the cell of the base station administration,

The channel correction unit is specifically used for：According to the down channel between the serving cell of the UE and the first community Phase difference, determine the wave beam forming BF weights of the serving cell and the BF weights of the first community；It is small according to the service The BF weights in area carry out wave beam forming to the transmission channel corresponding to the serving cell, and are weighed according to the BF of the first community It is worth and wave beam forming is carried out to the transmission channel corresponding to the first community；According to the serving cell and the first community Wave beam forming result is carried out to the transmission channel corresponding to the serving cell and the transmission channel corresponding to the first community Channel correcting.
24. the base station as described in claim 16 or 17, it is characterised in that the measurement item indicating bit is used to indicate that the UE is surveyed Measure and feed back the down channel phase difference between at least one neighbor cell and the UE serving cell, the MDT message is taken Down channel phase difference between serving cell and second community with the UE, the second community are the adjacent small of the UE Area, and the second community belongs to the cell of the second base station administration, second base station and the base station are not same base stations, The channel correction unit is specifically used for：

According to the BF weights of the serving cell to the transmission channel progress wave beam forming corresponding to the serving cell, and according to The wave beam forming result of the serving cell, channel correcting is carried out to the transmission channel corresponding to the serving cell；And/or

Under being sent by the transmitting element to second base station between the serving cell of the UE and the second community Row channel phase is poor, so that second base station determines the BF weights of the second community, to corresponding to the second community Transmission channel carries out wave beam forming, and according to the wave beam forming result of the second community, to corresponding to the second community Transmission channel carries out channel correcting.
A kind of 25. user equipment, it is characterised in that including：

Receiving unit, for receiving the minimum drive test MDT triggering commands of first base station transmission, wherein the first base station is pipe The base station of the serving cell of the user equipment is had jurisdiction over, includes measurement item indicating bit in the MDT triggering commands, the measurement item refers to Show that position is used to indicate that the user equipment measures and feeds back the descending channel information of at least one cell；

Acquiring unit, measure for the measurement item indicating bit in the MDT triggering commands and set with obtaining the user The descending channel information of standby at least one cell；

Transmitting element, for sending MDT message to the first base station, wherein, the MDT message carries the user equipment The descending channel information of at least one cell, it is real so that the first base station is according to the descending channel information of the user equipment Now to the channel correcting of the transceiver channel of at least one cell so that in any of described at least one cell cell The school of channel response and the same subcarrier of synchronization is received after the correction of the same subcarrier of synchronization per transceiver channel all the way The ratio for just sending out channel response afterwards is equal.
26. user equipment as claimed in claim 25, it is characterised in that transmitting-receiving of the realization at least one cell The channel correcting of passage also includes：So that the transmitting-receiving for the cell that any two joint sends signal is led at least one cell Channel response is received after the correction of the same subcarrier of synchronization and is rung with sending out passage after the correction of the same subcarrier of synchronization in road The ratio answered is equal.
27. the user equipment as described in claim 25 or 26, it is characterised in that the measurement item in the MDT triggering commands refers to Show that position is used to indicate that the user equipment measures and feeds back the downlink channel response of at least one cell；

The measurement item indicating bit that the acquiring unit is specifically used in the MDT triggering commands is measured described in acquisition The descending channel information of user equipment includes：Measurement item indicating bit in the MDT triggering commands is measured to obtain The downlink channel response of at least one cell；

Wherein, the MDT message carries the downlink channel response of one or more of at least one cell cell, so as to The first base station is according to the downlink channel responses of one or more of cells, to corresponding to one or more of cells Transceiver channel carries out channel correcting.
28. user equipment as claimed in claim 27, it is characterised in that the downlink channel response is rung for downlink frequency domain channel Should,

The measurement item indicating bit that the acquiring unit is specifically used in the MDT triggering commands is measured to obtain at least The downlink frequency domain channel response of one cell.
29. user equipment as claimed in claim 27, it is characterised in that the downlink channel response is rung for descending time domain channel Should,

The acquiring unit is specifically used for：Measurement item indicating bit in the MDT triggering commands is measured to obtain extremely The downlink frequency domain channel response of a few cell, and the downlink frequency domain channel response is converted into descending time domain channel response.
30. the user equipment as described in claim 25 or 26, it is characterised in that the measurement item in the MDT triggering commands refers to Show position be used to indicating the user equipment measure and feed back at least one neighbor cell and the user equipment serving cell it Between down channel phase difference；

The acquiring unit is specifically used for：Measurement item indicating bit in the MDT triggering commands is measured to obtain State the down channel phase difference between at least one neighbor cell of user equipment and the serving cell of the user equipment；

Wherein, the MDT message carries one or more neighbor cells at least one neighbor cell and set with the user Down channel phase difference between standby serving cell, so as to the first base station according to one or more of neighbor cells with Down channel phase difference between the serving cell of the user equipment, to the receipts corresponding to one or more of neighbor cells Send out passage, and the transceiver channel progress channel correcting corresponding to the serving cell of the user equipment.
A kind of 31. communication system, it is characterised in that including：

Base station as described in claim 16 to any one of claim 24, and/or

User equipment as described in claim 25 to any one of claim 30.