CN105207723A - Channel correction method, base station, user equipment and communication system - Google Patents

Abstract

An embodiment of the invention provides a channel correction method, a base station, user equipment and a communication system. The method comprises the following steps that a first base station sends a MDT trigger instruction to UE, the MDT trigger instruction comprises a measurement item indicating bit, and the measurement item indicating bit is used for indicating the UE to measure and feeding back downlink channel information of at least one cell; the first base station receives a MDT message fed back by the UE and the MDT message carries the downlink channel information of at least one cell measured by the UE; the first base station realizes channel correction to a transmit-receive channel corresponding to the at least one cell measured by the UE according to the downlink channel information of the at least one cell measured by the UE so that ratios of a receiving channel response after correction of each path of the transmit-receive channel in any one cell of the at least one cell at a same moment and at a same subcarrier and a transmitting channel response after correction at the same moment and at the same subcarrier are equal or are approximately equal.

Description

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

Technical field

The embodiment of the present invention relates to the communications field, and more specifically, relates to a kind of channel correcting method, base station, subscriber equipment and communication system.

Background technology

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

The acquisition of complete channel information is depended in acquisition due to relevant effect, time division duplex (TimeDivisionDuplexing, TDD) system utilizes the reciprocity of up-downgoing channel of eating dishes without rice or wine to obtain complete channel information, as utilized the channel response of uplink reference signals to obtain down channel feature.

But complete wireless access includes antenna subsystem, middle radio frequency (IntermediateRatioFrequency, IRF) subsystem and baseband subsystems, the channel characteristics that final base band obtains will comprise channel response of eating dishes without rice or wine, antenna feeder and transceiver (TRX, Transceiver) channel response, now due to the receive path response of TRX and the nonreciprocity of transmission channel response, and ratio between receive path corresponding to multiple TRX and the channel response of transmission channel inconsistent, the array gain that UE side can obtain coherent superposition on each subcarrier and brings cannot be ensured, even also may bring the effect of signal cancellation, reduce systematic function.

Summary of the invention

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

First aspect, provide a kind of channel correcting method auxiliary based on minimal path measurement information, the method comprises: the first base station sends MDT triggering command to UE, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate this UE and measures and the descending channel information feeding back at least one community; First base station receives the MDT message that this UE feeds back, and this MDT message carries the descending channel information of at least one community that this UE measures; The descending channel information of at least one community that the first base station is measured according to this UE, realize the channel correcting of transceiver channel corresponding at least one community that UE is measured, make each the road transceiver channel in this at least one community in any one community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

In conjunction with first aspect, in the implementation that the first is possible, the channel correcting of the transceiver channel corresponding at least one community that this realization is measured UE also comprises: make any two transceiver channels of combining the community sending signal in this at least one community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

In conjunction with the first possible implementation of first aspect or first aspect, in the implementation that the second is possible, this measurement item indicating bit is used to indicate this UE and measures and the downlink channel response feeding back at least one community, the first community at least one community that this UE measures is the community of the first base station administration, this MDT message carries the downlink channel response of the first community

The method also comprises: the first base station obtains the up channel response of the first community;

First base station is according to the descending channel information of the first community, carry out channel correcting to the transceiver channel of the first base station corresponding to the first community to comprise: channel correcting, according to the downlink channel response of the first community and up channel response, is carried out to the transceiver channel of the first base station corresponding to the first community in the first base station.

In conjunction with the implementation that the second of first aspect is possible, in the implementation that the third is possible, the downlink channel response of the first community comprises: the down-bound pilot frequency signal that the first base station is launched at least one road transmission channel corresponding to the first community arrives the first downlink frequency domain channel response during the receive path of this UE;

The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the first up domain channel response of the first base station when at least one road receive path corresponding to the first community, wherein, at least one road receive path and the first base station at least one road transmission channel one_to_one corresponding first community corresponding to of the first base station corresponding to the first community;

First base station is according to the downlink channel response of the first community and up channel response, carry out channel correcting to the transceiver channel of the first base station corresponding to the first community to comprise: channel correcting, according to this first downlink frequency domain channel response and this first up domain channel response, is carried out to the transceiver channel of the first base station corresponding to the first community in the first base station;

Wherein, this first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, and this first up domain channel response comprises amplitude and phase information or only comprises phase information.

In conjunction with the implementation that the second of first aspect is possible, in the 4th kind of possible implementation, the downlink channel response of the first community comprises: the first downlink frequency domain channel response when the down-bound pilot frequency signal that the first base station is launched at least one road transmission channel corresponding to the first community arrives the receive path of this UE and the ratio between the first designated parameter;

The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the ratio of the first base station between the first up domain channel response and the second designated parameter of at least one road receive path corresponding to the first community, wherein, at least one road receive path and the first base station at least one road transmission channel one_to_one corresponding first community corresponding to of the first base station corresponding to the first community;

First base station is according to the downlink channel response of the first community and up channel response, carry out channel correcting to the first base station at the transceiver channel corresponding to the first community to comprise: the first base station is according to the ratio between this first downlink frequency domain channel response and this first designated parameter, and the ratio between this first up domain channel response and this second designated parameter, channel correcting is carried out to the transceiver channel of the first base station corresponding to the first community;

Wherein, this the first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, this first up domain channel response comprises amplitude and phase information or only comprises phase information, this first designated parameter is the downlink frequency domain channel response of specifying transmission channel corresponding in the downlink frequency domain channel response of the first community, this second designated parameter is the up domain channel response of specifying receive path corresponding in the up domain channel response of the first community, and this appointment receive path is corresponding with this appointment transmission channel.

In conjunction with the implementation that the second of first aspect is possible, in the 5th kind of possible implementation, the downlink channel response of the first community comprises: the down-bound pilot frequency signal that the first base station is launched at least one road transmission channel corresponding to the first community arrives the first descending time domain channel response during the receive path of this UE

The method also comprises: the first base station converts this first descending time domain channel response to first downlink frequency domain channel response;

The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the first up domain channel response of the first base station when at least one road receive path corresponding to the first community, wherein, at least one road receive path and the first base station at least one road transmission channel one_to_one corresponding first community corresponding to of the first base station corresponding to the first community;

First base station is according to the downlink channel response of the first community and up channel response, carry out channel correcting to the transceiver channel of the first base station corresponding to the first community to comprise: channel correcting, according to this first downlink frequency domain channel response and this first up domain channel response, is carried out to the transceiver channel of the first base station corresponding to the first community in the first base station;

Wherein, this first downlink frequency domain channel response and this first descending time domain channel response comprise amplitude and phase information, and this first up domain channel response comprises amplitude and phase information or only comprises phase information.

In conjunction with the first possible implementation of first aspect or first aspect, in the 6th kind of possible implementation, this measurement item indicating bit is used to indicate this UE and measures and the downlink channel response feeding back at least one community, the second community at least one community that this UE measures is the community of the second base station administration, second base station and the first base station are not same base stations, this MDT message carries the downlink channel response of the second community

The descending channel information of at least one community that the first base station is measured according to this UE, realizes comprising the channel correcting of the transmission channel of at least one community that UE measures:

First base station sends the downlink channel response of the second community to the second base station, so that channel correcting is carried out to the transceiver channel of the second base station corresponding to the second community in the second base station.

In conjunction with the first possible implementation of first aspect or first aspect, in the 7th kind of possible implementation, this measurement item indicating bit is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE, this MDT message carries the down channel phase difference between the Serving cell of this UE and the first community, first community is the neighbor cell of this UE, and the first community belongs to the community of the first base station administration

The descending channel information of at least one community that the first base station is measured according to this UE, realizes comprising the channel correcting of the transceiver channel corresponding at least one community of UE measurement:

The BF weights of Serving cell and the BF weights of the first community, according to the down channel phase difference between the Serving cell of this UE and the first community, are determined in first 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 carries out wave beam forming according to the BF weights of the first community to the transmission channel corresponding to the first community;

First base station carries out channel correcting according to the wave beam forming result of Serving cell and the first community to the transmission channel corresponding to the transmission channel corresponding to Serving cell and the first community.

In conjunction with the first possible implementation of first aspect or first aspect, in the 8th kind of possible implementation, this measurement item indicating bit is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE, this MDT message carries the down channel phase difference between the Serving cell of this UE and the second community, second community is the neighbor cell of this UE, and the second community belongs to the community of the second base station administration, second base station and the first base station are not same base stations

The descending channel information of at least one community that the first base station is measured according to this UE, realizes comprising the channel correcting of the transceiver channel corresponding at least one community of UE measurement:

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, carries out channel correcting to the transmission channel corresponding to Serving cell; And/or

First base station sends the down channel phase difference between the Serving cell of this UE and the second community to the second base station, so that the BF weights of the second community are determined in the second base station, wave beam forming is carried out to the transmission channel corresponding to the second community, and according to the wave beam forming result of the second community, channel correcting is carried out to the transmission channel corresponding to the second community.

Second aspect, provide a kind of channel correcting method auxiliary based on minimal path measurement information, the method comprises: UE receives the MDT triggering command that the first base station sends, wherein the first base station is the base station of the Serving cell of this UE of administration, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate this UE and measures and the descending channel information feeding back at least one community; This UE carries out the descending channel information of at least one community measuring to obtain this UE according to the measurement item indicating bit in this MDT triggering command; This UE sends MDT message to the first base station, wherein, this MDT message carries the descending channel information of at least one community of this UE, so that the first base station is according to the descending channel information of this UE, realize the channel correcting to the transceiver channel of this at least one community, make each the road transceiver channel in this at least one community in any one community receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

In conjunction with second aspect, in the implementation that the first is possible, realize also comprising the channel correcting of the transceiver channel of this at least one community: to make in this at least one community any two to combine the transceiver channel of community sending signal to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

In conjunction with the first possible implementation of second aspect or second aspect, in the implementation that the second is possible, the measurement item indicating bit in this MDT triggering command is used to indicate this UE and measures and the downlink channel response feeding back at least one community;

The descending channel information that UE carries out measuring to obtain this UE according to the measurement item indicating bit in this MDT triggering command comprises: this UE carries out measuring to obtain the downlink channel response of at least one community according to the measurement item indicating bit in this MDT triggering command;

This MDT message carries the downlink channel response of the one or more communities in this at least one community, so that the first base station is according to the downlink channel response of this one or more community, carries out channel correcting to the transceiver channel corresponding to this one or more community.

In conjunction with the implementation that the second of second aspect is possible, in the implementation that the third is possible, this downlink channel response is downlink frequency domain channel response, and the downlink channel response that this UE carries out measuring to obtain at least one community according to the measurement item indicating bit in this MDT triggering command comprises: this UE carries out according to the measurement item indicating bit in this MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community.

In conjunction with the implementation that the second of second aspect is possible, in the 4th kind of possible implementation, this downlink channel response is descending time domain channel response,

The downlink channel response that this UE carries out measuring to obtain at least one community according to the measurement item indicating bit in this MDT triggering command comprises: this UE carries out according to the measurement item indicating bit in this MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community; This UE converts this downlink frequency domain channel response to descending time domain channel response.

In conjunction with the first possible implementation of second aspect or second aspect, the measurement item indicating bit in the 5th kind of possible implementation in this MDT triggering command is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE;

The descending channel information that this UE carries out measuring to obtain this UE according to the measurement item indicating bit in this MDT triggering command comprises: this UE carries out according to the measurement item indicating bit in this MDT triggering command the down channel phase difference between at least one neighbor cell and Serving cell of this UE measuring to obtain this UE;

This MDT message carries the down channel phase difference in this at least one neighbor cell between one or more neighbor cell and the Serving cell of this UE, so that the first base station is according to the down channel phase difference between this one or more neighbor cell and Serving cell of this UE, to the transceiver channel corresponding to this one or more neighbor cell, and the transceiver channel corresponding to the Serving cell of this UE carries out channel correcting.

The third aspect, provide a kind of base station, this base station comprises: transmitting element, for sending MDT triggering command to UE, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate this UE and measures and the descending channel information feeding back at least one community; Receiving element, for receiving the MDT message that this UE feeds back, this MDT message carries the descending channel information of at least one community that this UE measures; Channel correction unit, for the descending channel information of at least one community measured according to this UE, realize the channel correcting of the transceiver channel corresponding at least one community that this UE is measured, make each the road transceiver channel in this at least one community in any one community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

In conjunction with the third aspect, in the implementation that the first is possible, at the descending channel information of at least one community for measuring according to this UE, realize in the process of the channel correcting of the transceiver channel corresponding at least one community measured this UE, this channel correction unit is also provided for any two transceiver channels of combining the community sending signal in this at least one community, and to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

In conjunction with in the first possible implementation of the third aspect or the third aspect, in the implementation that the second is possible, this measurement item indicating bit is used to indicate this UE and measures and the downlink channel response feeding back at least one community, the first community at least one community that this UE measures is the community of this base station administration, this MDT message carries the downlink channel response of the first community

This base station also comprises acquiring unit, for obtaining the up channel response of the first community;

This channel correction unit, specifically for according to the downlink channel response of the first community and up channel response, carries out channel correcting to the transceiver channel of this base station corresponding to the first community.

In conjunction with the implementation that the second of the third aspect is possible, in the implementation that the third is possible, the downlink channel response of the first community comprises: the down-bound pilot frequency signal that this base station is launched at least one road transmission channel corresponding to the first community arrives the first downlink frequency domain channel response during the receive path of this UE;

The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the first up domain channel response of this base station when at least one road receive path corresponding to the first community, wherein, at least one road receive path and this base station at least one road transmission channel one_to_one corresponding first community corresponding to of this base station corresponding to the first community;

For according to the downlink channel response of the first community and up channel response, carry out in the process of channel correcting to this base station at the transceiver channel corresponding to the first community, this channel correction unit according to this first downlink frequency domain channel response and this first up domain channel response, carries out channel correcting to the transceiver channel of this base station corresponding to the first community specifically for: this base station;

Wherein, this first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, and this first up domain channel response comprises amplitude and phase information or only comprises phase information.

In conjunction with in the first possible implementation of the third aspect or the third aspect, in the 4th kind of possible implementation, the downlink channel response of the first community comprises: the first downlink frequency domain channel response when the down-bound pilot frequency signal that this base station is launched at least one road transmission channel corresponding to the first community arrives the receive path of this UE and the ratio between the first designated parameter;

The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the ratio of this base station between the first up domain channel response and the second designated parameter of at least one road receive path corresponding to the first community, wherein, at least one road receive path and this base station at least one road transmission channel one_to_one corresponding first community corresponding to of this base station corresponding to the first community;

This channel correction unit specifically for: according to the ratio between this first downlink frequency domain channel response and this first designated parameter, and the ratio between this first up domain channel response and this second designated parameter, channel correcting is carried out to the transceiver channel of this base station corresponding to the first community;

Wherein, this the first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, this first up domain channel response comprises amplitude and phase information or only comprises phase information, this first designated parameter is the downlink frequency domain channel response of specifying transmission channel corresponding in the downlink frequency domain channel response of the first community, this second designated parameter is the up domain channel response of specifying receive path corresponding in the up domain channel response of the first community, and this appointment receive path is corresponding with this appointment transmission channel.

In conjunction with in the first possible implementation of the third aspect or the third aspect, in the 5th kind of possible implementation, the downlink channel response of the first community comprises: the down-bound pilot frequency signal that this base station is launched at least one road transmission channel corresponding to the first community arrives the first descending time domain channel response during the receive path of this UE

This base station also comprises time-frequency domain converting unit, for converting this first descending time domain channel response to first downlink frequency domain channel response;

The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the first up domain channel response of this base station when at least one road receive path corresponding to the first community, wherein, at least one road receive path and this base station at least one road transmission channel one_to_one corresponding first community corresponding to of this base station corresponding to the first community;

This channel correction unit specifically for: according to this first downlink frequency domain channel response and this first up domain channel response, channel correcting is carried out to the transceiver channel of this base station corresponding to the first community;

Wherein, this first downlink frequency domain channel response and this first descending time domain channel response comprise amplitude and phase information, and this first up domain channel response comprises amplitude and phase information or only comprises phase information.

In conjunction with the first possible implementation of the third aspect or the third aspect, in the 6th kind of possible implementation, this measurement item indicating bit is used to indicate this UE and measures and the downlink channel response feeding back at least one community, the second community at least one community that this UE measures is the community of the second base station administration, second base station and this base station are not same base stations, this MDT message carries the downlink channel response of the second community

This channel correction unit specifically for the downlink channel response being sent the second community by this transmitting element to the second base station so that channel correcting is carried out to the transceiver channel of the second base station corresponding to the second community in the second base station.

In conjunction with the first possible implementation of the third aspect or the third aspect, in the 7th kind of possible implementation, this measurement item indicating bit is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE, this MDT message carries the down channel phase difference between the Serving cell of this UE and the first community, first community is the neighbor cell of this UE, and the first community belongs to the community of this base station administration

This channel correction unit specifically for: according to the down channel phase difference between the Serving cell of this UE and the first community, determine the BF weights of Serving cell and the BF weights of the first community; BF weights according to Serving cell carry out wave beam forming to the transmission channel corresponding to Serving cell, and carry out wave beam forming according to the BF weights of the first community to the transmission channel corresponding to the first community; Wave beam forming result according to Serving cell and the first community carries out channel correcting to the transmission channel corresponding to the transmission channel corresponding to Serving cell and the first community.

In conjunction with the first possible implementation of the third aspect or the third aspect, in the 8th kind of possible implementation, this measurement item indicating bit is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE, this MDT message carries the down channel phase difference between the Serving cell of this UE and the second community, second community is the neighbor cell of this UE, and the second community belongs to the community of the second base station administration, second base station and this base station are not same base stations, this channel correction unit specifically for:

BF weights according to Serving cell carry out wave beam forming to the transmission channel corresponding to Serving cell, and according to the wave beam forming result of Serving cell, carry out channel correcting to the transmission channel corresponding to Serving cell; And/or

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

Fourth aspect, provide a kind of subscriber equipment, this subscriber equipment comprises: receiving element, for receiving the MDT triggering command that the first base station sends, wherein the first base station is the base station of the Serving cell of this UE of administration, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate this subscriber equipment and measures and the descending channel information feeding back at least one community; Acquiring unit, for carrying out the descending channel information of at least one community measuring to obtain this subscriber equipment according to the measurement item indicating bit in this MDT triggering command; Transmitting element, for sending MDT message to the first base station, wherein, this MDT message carries the descending channel information of at least one community of this subscriber equipment, so that the first base station is according to the descending channel information of this subscriber equipment, realize the channel correcting of the transceiver channel to this at least one community.

In conjunction with fourth aspect, in the implementation that the first is possible, the channel correcting of this realization to the transceiver channel of this at least one community also comprises: send out a channel response after making in this at least one community any two receipts channel responses of combining transceiver channel same subcarrier of synchronization after the correction of synchronization of the community sending signal and correcting and correct that rear to receive channel response equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

In conjunction with the first possible implementation of fourth aspect or fourth aspect, in the implementation that the second is possible, the measurement item indicating bit in this MDT triggering command is used to indicate this subscriber equipment and measures and the downlink channel response feeding back at least one community;

This acquiring unit comprises specifically for the descending channel information carrying out measuring to obtain this subscriber equipment according to the measurement item indicating bit in this MDT triggering command: the downlink channel response carrying out measuring to obtain at least one community according to the measurement item indicating bit in this MDT triggering command;

Wherein, this MDT message carries the downlink channel response of the one or more communities in this at least one community, so that the first base station is according to the downlink channel response of this one or more community, channel correcting is carried out to the transceiver channel corresponding to this one or more community.

In conjunction with the implementation that the second of fourth aspect is possible, in the implementation that the third is possible, this downlink channel response is downlink frequency domain channel response,

This acquiring unit is specifically for carrying out according to the measurement item indicating bit in this MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community.

In conjunction with the implementation that the second of fourth aspect is possible, in the 4th kind of possible implementation, this downlink channel response is descending time domain channel response,

This acquiring unit specifically for: carry out according to the measurement item indicating bit in this MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community, and convert this downlink frequency domain channel response to descending time domain channel response.

In conjunction with the first possible implementation of fourth aspect or fourth aspect, in the 5th kind of possible implementation, the measurement item indicating bit in this MDT triggering command is used to indicate this subscriber equipment and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this subscriber equipment;

This acquiring unit specifically for: carry out according to the measurement item indicating bit in this MDT triggering command the down channel phase difference between at least one neighbor cell and Serving cell of this subscriber equipment measuring to obtain this subscriber equipment;

Wherein, this MDT message carries the down channel phase difference in this at least one neighbor cell between one or more neighbor cell and the Serving cell of this subscriber equipment, so that the first base station is according to the down channel phase difference between this one or more neighbor cell and Serving cell of this subscriber equipment, to the transceiver channel corresponding to this one or more neighbor cell, and the transceiver channel corresponding to the Serving cell of this subscriber equipment carries out channel correcting.

5th aspect, provide a kind of communication system, this system comprises: the first possible implementation of the third aspect or the third aspect is to the base station in any one possible implementation in the 8th kind of possible implementation of the third aspect, or the subscriber equipment in the first possible implementation of fourth aspect or fourth aspect to the 5th kind of possible implementation of fourth aspect in any one possible implementation.

Based on above technical scheme, the channel correcting method of the embodiment of the present invention, base station, subscriber equipment and communication system, base station by indicating UE feedback of down channel information in MDT triggering command, and according to the descending channel information of at least one community of UE feedback, realize the channel correcting of the transceiver channel (receiving and transmission channel) to this at least one community, make transceiver channel in community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus make communication system can obtain the array gain that in community, multichannel coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

Accompanying drawing explanation

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

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

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

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

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

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

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

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

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

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

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

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

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

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

To facilitate understanding of the present embodiment of the invention, first introduce during the embodiment of the present invention describes at this several key elements that can introduce.

Remote Radio Unit ((RadioRemoteUnit, RRU), the base station equipment of radio communication, sends out for baseband signal being changed into radiofrequency signal amplification at far-end, be connected by optical fiber and baseband processing unit (BuildingBasebandUnit, BBU).

Baseband processing unit (BaseBandUnit, BBU), the base station equipment of radio communication, a BBU can support one or more RRU.

Frequency Division Duplexing (FDD) (FrequencyDivisionDuplexing, FDD), needs two independently frequency channels when receiving and launch.A channel is used for transmitting information downwards, and one other channel is used for upwards transmitting information.A protection frequency range is there is, to prevent from producing interference mutually between contiguous transmitter and receiver between two channels.

Time division duplex (TimeDivisionDuplex, TDD), sends and Received signal strength carries out in the different time-gap of same frequency channels, when carrying out asymmetric transfer of data, can make full use of limited frequency spectrum resource.

Minimum road test (MinimizationofDriveTest, MDT): obtain the relevant parameter required for the network optimization by the measurement report of terminal to report.

Singular value decomposition (SigularValueDecomposition, SVD), a kind of matrix decomposition method.For matrix H _n*M, suppose that the singular value decomposition of H is H _n*M=V _n*NΛ _n*M(U _m*M) ^h, wherein, matrix Λ _n*Mdiagonal on element equal H _n*Msingular value .V _n*Nand U _m*Mrow be left and right singular vector in singular value respectively. represent U _m*Mconjugate matrices, I _mrepresent M rank unit matrix, represent V _n*Nconjugate matrices, I _nrepresent N rank unit matrix.

Wave beam forming (Beamforming, BF), its target is according to system performance index, form the best of breed to base band (intermediate frequency) signal or distribution, specifically, be exactly compensate the signal fadeout and distortion introduced by the factor such as space loss, multipath effect in radio transmission process, reduce the interference between co-channel users simultaneously.The principle of wave beam forming: at transmitting terminal, beamformer controls phase place and the signal amplitude of each emitter, thus acquisition needs to grow mutually and destructive interference pattern in the signal wave battle array of launching; At receiving terminal, the signal that different receiver receives is combined by a kind of appropriate mode, thus obtains expected signal amplitude emission mode.

Fig. 1 is an application scenarios schematic diagram of the embodiment of the present invention.As shown in Figure 1, BBU sends signal, parameter h by sky alignment subscriber equipment (UserEquipment, UE) be connected with the transmission channel of N road RRU _{tx, n-1}represent the channel response of RRU n-th road transmission channel, base station also receives the signal of subscriber equipment (UserEquipment, UE) by the antenna that the receive path of N road RRU is corresponding, parameter h _{rx, n-1}represent RRU n-th road receive path channel response.Wherein, transmission channel and receive path one_to_one corresponding.Although should be understood that Fig. 1 merely illustrates a BBU, in the application of reality, N road RRU may be connected on different BBU, and N road RRU corresponding to the different districts under the administration of same base station, or may correspond to the different districts under different base station administration.In addition, in Fig. 1, can there is one or more receive path and transmission channel in a RRU, and each road transmission channel of RRU all exists a corresponding receive path.

Embodiment of the present invention technical problem to be solved, is exactly how according to the measurement result of UE side, carries out channel correcting to the transceiver channel of base station side, thus makes one or more community send to the signal of UE can coherent superposition, obtains array gain.

Fig. 2 is the flow chart of embodiment of the present invention channel correcting method.The method of Fig. 2 is performed by the first base station.The method can comprise:

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

Wherein, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate this UE and measures and the descending channel information feeding back at least one community.

202, first base station receives the MDT message that this UE feeds back.

Wherein, this MDT message carries the descending channel information of at least one community that this UE measures.

203, the descending channel information of at least one community that the first base station is measured according to this UE, realize the channel correcting of transceiver channel corresponding at least one community that UE is measured, make each the road transceiver channel in this at least one community in any one community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

Should be understood that when channel correcting, correct in the enterprising row of channels of same subcarrier, can phase invariant be ensured.Here, same subcarrier refers to that the sequence number of subcarrier is identical, such as, and a kth subcarrier.In addition, when carrying out channel correcting, because channel is slow change, in shorter predetermined amount of time, channel response change is less, can think the channel response of synchronization.Such as, at close several symbols, several subframe, in several frame, or is less than time period of coherence time of channel, can think that its channel response on same subcarrier is constant.

In addition, it should be understood that the synchronization receiving channel response after correcting, the synchronization with sending out channel response after correction, does not need completely equal, only needs to ensure that its time interval is within the coherence time of channel the time.

Should understand, when carrying out channel correction, the ratio being difficult to each the road transceiver channel channel response after channel response is received in the correction of the same subcarrier of synchronization afterwards and the same subcarrier of synchronization corrects accomplished in community is strictly equal, always there is certain error.Within the scope that error allows, can think that the correction of multiple transceiver channel is received channel response and the correction of the same subcarrier of synchronization afterwards and sent out the equal or approximately equal of the ratio of channel response afterwards.Particularly, when can specify that the difference that the ratio of channel response is sent out in correction that channel response and the same subcarrier of synchronization are received in the correction of any two transceiver channels afterwards is afterwards less than predetermined threshold, namely can be considered equal or approximately equal.This predetermined threshold by the strategy decision of operator, or can be specified by agreement.Such as, can specify that this predetermined threshold is 0.2db.

In the embodiment of the present invention, base station by indicating UE feedback of down channel information in MDT triggering command, and according to the descending channel information of at least one community of UE feedback, realize the channel correcting of the transceiver channel (receiving and transmission channel) to this at least one community, make transceiver channel in community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus make communication system can obtain the array gain that in community, multiple antennas coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

Further, the channel correcting of transceiver channel corresponding at least one community realizing measuring UE also comprises: make any two transceiver channels of combining the community sending signal in this at least one community receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

In addition, should understand, due to the correction of each road transceiver channel of single subdistrict in this at least one community, to receive channel response afterwards equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards, and the ratio of channel response is sent out in the correction that channel response and the same subcarrier of synchronization are received in the correction that the ratio that channel response is sent out in the correction that channel response and the same subcarrier of synchronization are received in the correction of single subdistrict afterwards afterwards just equals wherein arbitrary road transceiver channel afterwards afterwards.

By doing further correction to combining the transceiver channel of community sending signal, the array gain that communication system can be made to obtain multiple cell coherent superposition bring, improves the performance of the multi-point joint transmission of communication system further.

Alternatively, as an embodiment, the first community at least one community that this UE measures is the community of the first base station administration.Now, step 203 specifically can be embodied as: channel correcting, according to the descending channel information of the first community, is carried out to the transceiver channel of the first base station corresponding to the first community in the first base station.

Alternatively, as an embodiment, this measurement item indicating bit is used to indicate this UE and measures and the downlink channel response feeding back at least one community, the first community at least one community that this UE measures is the community of the first base station administration, this MDT message carries the downlink channel response of the first community, and the method also can comprise: the first base station obtains the up channel response of the first community.Now, step 203 specifically can be embodied as: channel correcting, according to the downlink channel response of the first community and up channel response, is carried out to the transceiver channel of the first base station corresponding to the first community in the first base station.

Alternatively, in a kind of concrete implementation of the present embodiment, the downlink channel response of the first community comprises: the down-bound pilot frequency signal that the first base station is launched at least one road transmission channel corresponding to the first community arrives the first downlink frequency domain channel response during the receive path of this UE.The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the first up domain channel response of the first base station when at least one road receive path corresponding to the first community, wherein, at least one road receive path and the first base station at least one road transmission channel one_to_one corresponding first community corresponding to of the first base station corresponding to the first community.Now, step 203 specifically can be embodied as: channel correcting, according to this first downlink frequency domain channel response and this first up domain channel response, is carried out to the transceiver channel of the first base station corresponding to the first community in the first base station.Wherein, this first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, and this first up channel domain channel response comprises amplitude and phase information or only comprises phase information.

Should be understood that at least one road receive path and the first base station at least one road transmission channel one_to_one corresponding first community corresponding to of the first base station corresponding to the first community, is say that the receive path of the first base station and transmission channel exist corresponding relation.Such as, there are N road transmission channel and N road receive path in the first base station on the first community, if the first base station sends down-bound pilot frequency signal at the 1st road sendaisle to UE, then the first base station can receive the uplink pilot signal that UE sends on the 1st road receive path.

Should be understood that in a communications system, in order to describe aspect, usually I road signal and Q road signal being represented by real and imaginary part respectively.No matter be domain channel response or time domain channel response, it is worth an available plural α e ^{j θ}represent, wherein α is the amplitude information of plural number, and θ is the amplitude information of plural number.When needs consideration amplitude and phase information, the information of α and θ can be uploaded in UE side; When only needing to consider phase information, the information of θ only can be uploaded in UE side, also can upload the information of α and θ, but base station side only need process the information of θ.The amplitude mentioned of arbitrary place and phase place herein, all refers to amplitude and the phase place of the plural number representing channel response.

In concrete realization, the first downlink frequency domain channel response that the first base station is corresponding at least one road transmission channel corresponding to the first community show with following formula table:

$H_{\mathrm{DL}}^{\mathrm{cell}0}(l,k)=\left[\begin{array}{ccccc}{h}_{\mathrm{dl},i-\mathrm{1,0}}^{\mathrm{cell}0}& h_{\mathrm{dl},i-\mathrm{1,1}}^{\mathrm{cell}0}& ...& h_{\mathrm{dl},i-1,n-1}^{\mathrm{cell}0}& h_{\mathrm{dl},i-1,N-1}^{\mathrm{cell}0}\end{array}\right],$

Wherein, represent the first downlink frequency domain channel response of the first base station when the down-bound pilot frequency signal that the n-th road transmission channel corresponding to the first community is launched on a l symbol kth subcarrier of the first community arrives the i-th road receive path of this UE, 1≤n≤N;

The first up channel response that the uplink pilot signal that first base station obtains the first community arrives at least one road receive path of the first base station corresponding to the first community is shown with following formula table:

$H_{\mathrm{UL}}^{\mathrm{cell}0}(l,k)={\left[\begin{array}{ccccc}{h}_{\mathrm{ul},0,i-1}^{\mathrm{cell}0}& h_{\mathrm{ul},1,i-1}^{\mathrm{cell}0}& ...& h_{\mathrm{ul},n-1,i-1}^{\mathrm{cell}0}& h_{\mathrm{dl},N-1,i-1}^{\mathrm{cell}0}\end{array}\right]}^T,$

Wherein, represent that uplink pilot signal that the i-th road transmission channel of this UE is launched on a l symbol kth subcarrier of the first community arrives the first up channel response of the n-th road transmission channel of the first base station corresponding to the first community, 1≤n≤N;

First base station is according to this first downlink frequency domain channel response and this first up domain channel response, and carrying out channel correcting to the transceiver channel of the first base station corresponding to the first community can represent with following formula:

$s_{\mathrm{dl},\mathrm{cal}}=\left[\begin{array}{cccccc}{\mathrm{\β}}_{\mathrm{dl},0}^{\mathrm{cell}0}& 0& 0& 0& 0& 0\\ 0& {\mathrm{\β}}_{\mathrm{dl},1}^{\mathrm{cell}0}& 0& 0& 0& 0\\ 0& 0& ...& 0& 0& 0\\ 0& 0& 0& {\mathrm{\β}}_{\mathrm{dl},n-1}^{\mathrm{cell}0}& 0& 0\\ 0& 0& 0& 0& ...& 0\\ 0& 0& 0& 0& 0& {\mathrm{\β}}_{\mathrm{dl},N-1}^{\mathrm{cell}0}\end{array}\right]\·\left[\begin{array}{c}{s}_0\\ s_1\\ ...\\ s_{n-1}\\ ...\\ s_{N-1}\end{array}\right],$

$r_{\mathrm{ul},\mathrm{cal}}=\left[\begin{array}{cccccc}{\mathrm{\β}}_{\mathrm{ul},0}^{\mathrm{cell}0}& 0& 0& 0& 0& 0\\ 0& {\mathrm{\β}}_{\mathrm{ul},1}^{\mathrm{cell}0}& 0& 0& 0& 0\\ 0& 0& ...& 0& 0& 0\\ 0& 0& 0& {\mathrm{\β}}_{\mathrm{ul},n-1}^{\mathrm{cell}0}& 0& 0\\ 0& 0& 0& 0& ...& 0\\ 0& 0& 0& 0& 0& {\mathrm{\β}}_{\mathrm{ul},N-1}^{\mathrm{cell}0}\end{array}\right]\·\left[\begin{array}{c}{r}_0\\ r_1\\ ...\\ r_{n-1}\\ ...\\ r_{N-1}\end{array}\right],$

Wherein, s _{dl, cal}represent the first base station baseband digital signal after the correction of the N road transmission channel transmitting corresponding to the first community, $s=\left[\begin{array}{c}{s}_0\\ s_1\\ ...\\ s_{n-1}\\ ...\\ s_{N-1}\end{array}\right]$ Represent the baseband digital signal that the first base station is launched on the N road transmission channel corresponding to the first community, ${\mathrm{\β}}_{\mathrm{dl}}=\left[\begin{array}{cccccc}{\mathrm{\β}}_{\mathrm{dl},0}^{\mathrm{cell}0}& 0& 0& 0& 0& 0\\ 0& {\mathrm{\β}}_{\mathrm{dl},1}^{\mathrm{cell}0}& 0& 0& 0& 0\\ 0& 0& ...& 0& 0& 0\\ 0& 0& 0& {\mathrm{\β}}_{\mathrm{dl},n-1}^{\mathrm{cell}0}& 0& 0\\ 0& 0& 0& 0& ...& 0\\ 0& 0& 0& 0& 0& {\mathrm{\β}}_{\mathrm{dl},N-1}^{\mathrm{cell}0}\end{array}\right]$ Represent the transmitting correction channel response penalty coefficient of the N road transmission channel of the first base station corresponding to the first community, represent the transmitting correction channel response penalty coefficient of the first base station in the N road transmission channel corresponding to the first community on the n-th road transmission channel, r _{ul, cal}represent the first base station baseband digital signal after the correction of the N road receive path reception corresponding to the first community, $r=\left[\begin{array}{c}{r}_0\\ r_1\\ ...\\ r_{n-1}\\ ...\\ r_{N-1}\end{array}\right]$ Represent the baseband digital signal that the N road receive path of the first base station corresponding to the first community receives, ${\mathrm{\β}}_{\mathrm{ul}}=\left[\begin{array}{cccccc}{\mathrm{\β}}_{\mathrm{ul},0}^{\mathrm{cell}0}& 0& 0& 0& 0& 0\\ 0& {\mathrm{\β}}_{\mathrm{ul},1}^{\mathrm{cell}0}& 0& 0& 0& 0\\ 0& 0& ...& 0& 0& 0\\ 0& 0& 0& {\mathrm{\β}}_{\mathrm{ul},n-1}^{\mathrm{cell}0}& 0& 0\\ 0& 0& 0& 0& ...& 0\\ 0& 0& 0& 0& 0& {\mathrm{\β}}_{\mathrm{ul},N-1}^{\mathrm{cell}0}\end{array}\right]$ Represent the reception correction channel response penalty coefficient of the N road receive path of the first base station corresponding to the first community, represent the reception correction channel response penalty coefficient of the first base station in the N road receive path corresponding to the first community on the n-th road receive path, and with meet 1≤n≤N, K represent correct after N road transmission channel corresponding to described first community and the channel response ratio of transmission channel in the receive path of N road with corresponding receive path.That is, the transmission channel channel response after correction is equal with the ratio between corresponding receive path channel response, namely $\frac{{\mathrm{\β}}_{\mathrm{ul},0}^{\mathrm{cell}0}*h_{\mathrm{ul},0,i-1}^{\mathrm{cell}0}}{{\mathrm{\β}}_{\mathrm{dl},0}^{\mathrm{cell}0}*h_{\mathrm{dl},i-\mathrm{1,0}}^{\mathrm{cell}0}}=\frac{{\mathrm{\β}}_{\mathrm{ul},1}^{\mathrm{cell}0}*h_{\mathrm{ul},1,i-1}^{\mathrm{cell}0}}{{\mathrm{\β}}_{\mathrm{dl},1}^{\mathrm{cell}0}*h_{\mathrm{dl},i-\mathrm{1,1}}^{\mathrm{cell}0}}=...=\frac{{\mathrm{\β}}_{\mathrm{ul},N-1}^{\mathrm{cell}0}*h_{\mathrm{ul},N-1,i-1}^{\mathrm{cell}0}}{{\mathrm{\β}}_{\mathrm{dl},N-1}^{\mathrm{cell}0}*h_{\mathrm{dl},i-1,N-1}^{\mathrm{cell}0}}.$

Should be understood that in above-mentioned formula, is description aspect, eliminates symbolic parameter l and subcarrier parameter k.In fact, s _{dl, cal}s 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, the first base station can adopt 3 kinds of modes to carry out channel correcting to the N road transceiver channel corresponding to the first community.

First kind of way, channel correcting is only carried out to transmission channel, transmitting channel correction coefficient in the first base station now, receiving channels calibration coefficient that is, the first base station does not need to carry out channel correcting to receive path.

The second way, channel correcting is only carried out to receive path, receiving channels calibration coefficient in the first base station now transmitting channel correction coefficient that is, the first base station does not need to carry out channel correcting to transmission channel.

The third mode, channel correcting is carried out to transmission channel and receive path in the first base station simultaneously.Particularly, receiving channels calibration coefficient can be made, transmitting channel correction coefficient, wherein K ₁, K ₂satisfy condition K ₁/ K ₂=K.

Alternatively, in the implementation that the another kind of the present embodiment is concrete, the downlink channel response of the first community comprises: the first downlink frequency domain channel response when the down-bound pilot frequency signal that the first base station is launched at least one road transmission channel corresponding to the first community arrives the receive path of this UE and the ratio between the first designated parameter.The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the ratio of the first base station between the first up domain channel response and the second designated parameter of at least one road receive path corresponding to the first community, wherein, at least one road receive path and the first base station at least one road transmission channel one_to_one corresponding first community corresponding to of the first base station corresponding to the first community.Now, step 203 specifically can be embodied as: the first base station is according to the ratio between this first downlink frequency domain channel response and first designated parameter, and the ratio between this first up domain channel response and second designated parameter, channel correcting is carried out to the transceiver channel of the first base station corresponding to the first community.Wherein, this the first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, this first up domain channel response comprises amplitude and phase information or only comprises phase information, this first designated parameter is the downlink frequency domain channel response of specifying transmission channel corresponding in the downlink frequency domain channel response of the first community, this second designated parameter is the up domain channel response of specifying receive path corresponding in the up domain channel response of the first community, and this appointment receive path is corresponding with this appointment transmission channel.

Alternatively, in another concrete implementation of the present embodiment, the downlink channel response of the first community comprises: the down-bound pilot frequency signal that the first base station is launched at least one road transmission channel corresponding to the first community arrives the first descending time domain channel response during the receive path of this UE.Now, the method also can comprise: the first base station converts this first descending time domain channel response to first downlink frequency domain channel response.Now, the up channel response of the first community comprises: the uplink pilot signal of the first community arrives the first up domain channel response of the first base station when at least one road receive path corresponding to the first community, wherein, at least one road receive path and the first base station at least one road transmission channel one_to_one corresponding first community corresponding to of the first base station corresponding to the first community.Now, step 203 is implemented as: channel correcting, according to this first downlink frequency domain channel response and this first up domain channel response, is carried out to the transceiver channel of the first base station corresponding to the first community in the first base station.Wherein, this first downlink frequency domain channel response and this first descending time domain channel response comprise amplitude and phase information, and this first up domain channel response comprises amplitude and phase information or only comprises phase information.In addition, it should be understood that in the embodiment of the present invention, the similar e of phase information ^{j θ}form represent.If phase information is θ form, then first can transfer e to ^{j θ}.

Should understand, when UE side uploads a road dedicated tunnel less, this appointment transmission channel and this appointment receive path can be the passages that agreement specifies, also can be the passages determined after UE and base station negotiate, or the passage of UE and base station acquiescence, the embodiment of the present invention is not restricted this.Such as, can selector channel 0 as dedicated tunnel, namely select the downlink frequency domain channel response of transmission channel 0 as the first designated parameter, select the up domain channel response of receive path 0 as the second designated parameter.

Should be understood that the scene of multiple cell and single community upload scene similar.In the scene of multiple cell, the passage of multiple cell needs to adopt same reference channel.Now multiple RRU can be considered as a virtual RRU, just in this RRU, comprise all passages of the RRU of multiple community.

Alternatively, in another embodiment of the present invention, this measurement item indicating bit is used to indicate this UE and measures and the downlink channel response feeding back at least one community, the second community at least one community that this UE measures is the community of the second base station administration, second base station and the first base station are not same base stations, and this MDT message carries the downlink channel response of the second community.Now, step 203 is implemented as: the first base station sends the downlink channel response of the second community to the second base station, so that channel correcting is carried out to the transceiver channel of the second base station corresponding to the second community in the second base station.

Alternatively, in another embodiment of the present invention, this measurement item indicating bit is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE, this MDT message carries the down channel phase difference between the Serving cell of this UE and the first community, first community is the neighbor cell of this UE, and the first community belongs to the community of the first base station administration.Now, step 203 is implemented as: the BF weights of Serving cell and the BF weights of the first community, according to the down channel phase difference between the Serving cell of this UE and the first community, are determined in the first 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 carries out wave beam forming according to the BF weights of the first community to the transmission channel corresponding to the first community; First base station carries out channel correcting according to the wave beam forming result of Serving cell and the first community to the transmission channel corresponding to the transmission channel corresponding to Serving cell and the first community.

Particularly, in the present embodiment, might as well suppose that the first community is the neighbor cell of this UE, down channel phase difference θ between the Serving cell of this UE and the first community represents with code book [xy], first base station, according to the down channel phase difference between the Serving cell of this UE and the neighbor cell of this UE, determines that the BF weights of the neighbor cell of this UE and the BF weights of Serving cell show with following formula table:

$\left[\begin{array}{c}{\tilde{u}}_{\mathrm{DL}}^{\mathrm{cell}0}\\ {\tilde{u}}_{\mathrm{DL}}^{\mathrm{cell}1}\end{array}\right]=\left[\begin{array}{cc}x& 0\\ 0& y\end{array}\right]\·\left[\begin{array}{c}{u}_{\mathrm{DL}}^{\mathrm{cell}0}\\ u_{\mathrm{DL}}^{\mathrm{cell}1}\end{array}\right],$

Wherein, represent the BF weights of Serving cell, ${\tilde{u}}_{\mathrm{DL}}^{\mathrm{cell}0}=\left[\begin{array}{c}{\tilde{u}}_0^{\mathrm{cell}0}\\ {\tilde{u}}_1^{\mathrm{cell}0}\\ .\\ .\\ .\\ {\tilde{u}}_{\mathrm{Ntx}0-1}^{\mathrm{cell}0}\end{array}\right],$ represent the BF weights of the first community, ${\tilde{u}}_{\mathrm{DL}}^{\mathrm{cell}1}=\left[\begin{array}{c}{\tilde{u}}_0^{\mathrm{cell}1}\\ {\tilde{u}}_1^{\mathrm{cell}1}\\ .\\ .\\ .\\ {\tilde{u}}_{\mathrm{Ntx}1-1}^{\mathrm{cell}1}\end{array}\right],$ Ntx0 represents the number of the transmission channel of Serving cell, and Ntx1 represents the number of the transmission channel of the first community, represent the downlink channel response of the transmission channel corresponding to Serving cell of this UE main characteristic vector after SVD decomposes, namely first characteristic vector, represent the downlink channel response of the transmission channel corresponding to Serving cell of this UE main characteristic vector after SVD decomposes, namely first characteristic vector, 1≤m≤Ntx0,1≤m≤Ntx1, and meet following formula:

$H_{\mathrm{DL}}^{\mathrm{cell}0}=v_{\mathrm{DL}}^{\mathrm{cell}0}{\mathrm{\Λ}}_{\mathrm{DL}}^{\mathrm{cell}0}{\left(U_{\mathrm{DL}}^{\mathrm{cell}0}\right)}^H,H_{\mathrm{DL}}^{\mathrm{cell}1}=v_{\mathrm{DL}}^{\mathrm{cell}1}{\mathrm{\Λ}}_{\mathrm{DL}}^{\mathrm{cell}1}{\left(U_{\mathrm{DL}}^{\mathrm{cell}1}\right)}^H.$

In real system, if base station side cannot obtain downlink channel response, can based on TDD reciprocity utilize single community correct after up channel response calculate BF weights, carry out the transmitting channel correction of single community when downlink.It should be noted that, BF weights here also can be that UE utilizes descending channel information as downlink frequency domain channel estimating, and Signal to Interference plus Noise Ratio etc. calculate the code book (UE can feed back codebook index information to base station side) obtained.

In a kind of concrete implementation of the present embodiment, when the first community belongs to the community of the first base station administration, all adopt single current BF to be emitted as example for Serving cell and the first community, according to the BF weights of Serving cell, wave beam forming carried out to the transmission channel corresponding to Serving cell and adopt following formula to represent:

$s_{\mathrm{weight}}^{\mathrm{cell}0}=\left[\begin{array}{c}{\tilde{u}}_0^{\mathrm{cell}0}\\ {\tilde{u}}_1^{\mathrm{cell}0}\\ .\\ .\\ .\\ {\tilde{u}}_{\mathrm{Ntx}0-1}^{\mathrm{cell}0}\end{array}\right]\·\left[s_{\mathrm{org},0}^{\mathrm{cell}0}\right];$

Carry out the following formula table of channel correcting according to the BF weights of the first community to the transmission channel corresponding to the first community to show:

$s_{\mathrm{weight}}^{\mathrm{cell}1}=\left[\begin{array}{c}{\tilde{u}}_0^{\mathrm{cell}1}\\ {\tilde{u}}_1^{\mathrm{cell}1}\\ .\\ .\\ .\\ {\tilde{u}}_{\mathrm{Ntx}1-1}^{\mathrm{cell}1}\end{array}\right]\·\left[s_{\mathrm{org},0}^{\mathrm{cell}1}\right];$

Wherein, represent the BF weighting base band digital signal that the transmission channel corresponding to Serving cell is launched, represent the BF weighting base band digital signal that the transmission channel corresponding to the first community is launched, represent the raw modulation symbols of Serving cell downlink, represent the raw modulation symbols that the first cell downlink is launched.When Serving cell and first community associated be UE service time, thus UE obtains the gain of coherent transmitting.

When carrying out channel correcting to Serving cell and the first community, three kinds of modes can be adopted to carry out channel correcting.

First kind of way, only carries out phase path correction to transmitting of Serving cell.Now, transmitting of Serving cell is carried out channel correcting and can be represented with following formula:

$s_{\mathrm{dl},\mathrm{cal}}^{\mathrm{cell}0}=e^{\mathrm{j\θ}}\·s_{\mathrm{weight}}^{\mathrm{cell}0}.$

The second way, all carries out phase path correction to Serving cell and the first community.Generally, the phase place of θ/2 can be corrected respectively to Serving cell and transmitting of the first community.

Now, transmitting of Serving cell is carried out channel correcting and can be represented with following formula:

$s_{\mathrm{dl},\mathrm{cal}}^{\mathrm{cell}0}=e^{\mathrm{j\θ}/2}\·s_{\mathrm{weight}}^{\mathrm{cell}0}.$

Now, transmitting of the first community is carried out channel correcting and can be represented with following formula:

$s_{\mathrm{dl},\mathrm{cal}}^{\mathrm{cell}1}=e^{-\mathrm{j\θ}/2}\·s_{\mathrm{weight}}^{\mathrm{cell}1}.$

The third kind of mode, only carries out phase path correction to transmitting of the first community.Now, transmitting of the first community is carried out channel correcting and can be represented with following formula:

$s_{\mathrm{dl},\mathrm{cal}}^{\mathrm{cell}1}=e^{-\mathrm{j\θ}}\·s_{\mathrm{weight}}^{\mathrm{cell}1}.$

Alternatively, as another embodiment, this measurement item indicating bit is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE, this MDT message carries the down channel phase difference between the Serving cell of this UE and the second community, second community is the neighbor cell of this UE, and the second community belongs to the community of the first base station administration.Now, step 203 is implemented as: the first base station is according to the down channel phase difference between the Serving cell of this UE and the second community, determine the BF weights of Serving cell, BF weights according to Serving cell carry out wave beam forming 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 send down channel phase difference between the Serving cell of this UE and the second community to the second base station, so that the BF weights of the second community are determined in the second base station, wave beam forming is carried out to the transmission channel corresponding to the second community, and according to the wave beam forming result of the second community, channel correcting is carried out to the transmission channel corresponding to the second community.

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

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

301, first base station sends MDT triggering command.

In prior art, following configuration parameter, in the MDT triggering command sending to UE, can be carried in base station: measure item list (ListofMeasurement), report trigger (ReportingTrigger), measure interval (ReportInterval), measure quantity (ReportAmount) and time threshold (EventThreshold).Base station is by MDT triggering command instruction UE reporting measurement Reference Signal Received Quality (ReferenceSignalReceivingQuality, and Reference Signal Received Power (ReferenceSignalReceivingPower, RSRP) RSRQ).In prior art, the indicating bit information of the measurement item list of LTE and UMTS can be as shown in Table 1 and Table 2.

Table 1.

Table 2.

As shown in table 1, in LTE protocol, measure item list and can comprise two indicating bit M1 and M2.Now, measure item list and can comprise three kinds of effective indication informations: M1, M2 and M1+M2.Wherein, M1 is used to indicate UE periodic measurement RSRQ and RSRP, or reports this measurement of triggering according to event (event) A2; M2 is used to indicate UE and measures power headroom (PowerHeadroom, PH).

As shown in table 2, in UMTS agreement, measure item list and can comprise three indicating bits M1, M2 and M3.Now, measure item list and can comprise seven kinds of effective indication informations: M1, M2, M3, M1+M2, M1+M3, M2+M3, M1+M2+M3.Wherein, M1 is used to indicate the Ec/No of RSCP and CPICH of UE periodic measurement Common Pilot Channel (CommonPilotChannel, CPICH), or reports this measurement of triggering according to event1F.M2 is used to indicate UE and reports the process triggering the time slot measuring 1.28McpsTDD, P-PCCPCHRSCP and ISCP according to event1L.M3 is used to indicate the signal to noise ratio SIR that UE measures base station, if FDD system, M3 also can be used for indicating UE to measure the SIR error code (err) of base station.

Should understand, the embodiment of the present invention only explains the application scenarios of LTE, UMTS, do not show that the method for the embodiment of the present invention is only applicable to the application scenarios of LTE, UMTS, the method for the embodiment of the present invention also can application in the communication system beyond LTE, UMTS.

In the embodiment of the present invention, the first base station can increase by 1 indicating bit in the indicating bit information measuring item list, and be used to indicate the descending channel information of UE back services community, the indicating bit information of this measurement item list can be as shown in Table 3 and Table 4.

Table 3.

Table 4.

As shown in table 3, in LTE, measure item list and can comprise indicating bit M1, M2 and M3.Wherein, the effect of M1 with M2 is identical with M1 with M2 of LTE in table 1, and M3 can be used for indicating UE to feed back the descending channel information of the Serving cell of UE, so that base station carries out channel correcting according to descending channel information to the transceiver channel of base station.

As shown in table 4, in umts, measure item list and can comprise indicating bit M1, M2, M3 and M4.Wherein, M1, M2 are identical with M3 with M1, M2 of UMTS in table 2 with the effect of M3, and M4 is used to indicate UE and measures multichannel time and/or phase alignment.

302, UE measures the downlink frequency domain channel response of Serving cell.

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

Should be understood that the Serving cell mentioned in the embodiment of the present invention, all refer to the Serving cell of UE.

UE is carried out measuring adopted technological means, can with reference to prior art, the embodiment of the present invention does not limit at this.

303, UE sends MDT message, carries the downlink frequency domain channel response of Serving cell.

UE completes measurement by wireless heterogeneous networks (RadioResourceControl, RRC) message and reports, and the content reported is by MDT Message Transmission.Particularly, in RRC agreement, MeasurementReport message can be used to complete reporting of metrical information.In MeasurementReport message, the related pattern of definition is as follows:

Wherein, in measResults, define the measurement result of correlative measurement quantifier, mainly comprise: RSRP and RSRQ etc. of Serving cell.

In the embodiment of the present invention, can increase the feedback of channel information of this community in the first order under measResults, by dlcsiResult mark, its concrete content adopts 16 binary data to represent.Such as, dlcsiResult:0xa042a210,0x1426a017,0x......It should be understood, of course, that the feedback of channel information information of this community also can be placed on other position of measurement report (MeasurementReport), the embodiment of the present invention is not restricted this.

In the embodiment of the present invention, UE is the downlink frequency domain channel response of Serving cell by the descending channel information of MDT message feedback, and the down-bound pilot frequency signal that the multichannel transmission channel that namely the first base station is corresponding in described Serving cell is launched arrives the downlink frequency domain channel response during receive path of this UE.

In the embodiment of the present invention, UE, when feedback of down channel information, can select downlink channel response corresponding to one or more receive paths of UE to carry out quantification feedback.Such as, UE can select the receive path that in all receive paths of UE, channel quality is best to feed back, or selects one or more receive path in all receive paths of UE to feed back.Consider down channel feedback overhead, the mode that UE can take X to take out is fed back.Concrete, X span is that 1 ~ Y, Y represent descending effective subcarrier number except protection subcarrier.The definitions of bandwidth of subcarrier is certain frequency width, as 15KHz.Certainly, can also there is other feedback system, 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 response, can feed back in different ways.Might as well represent Serving cell with Cell0, then the downlink frequency domain channel response of the transmission channel corresponding to Serving cell on a l symbol kth subcarrier can be designated as wherein l is OFDM symbol label, span be 0 ~ L-1, L represent standard definition a time slot in the maximum number of OFDM symbol; K is subcarrier number, and span is the maximum number that 0 ~ K-1, K represent subcarrier.Such as in 20M system bandwidth, L=7, K=1200.It is pointed out that in LTE, a subframe can comprise 2 time slots.

In the first concrete implementation, UE can to the downlink frequency domain channel response of the multichannel transmission channel corresponding to the first base station feedback Serving cell.Might as well suppose the downlink frequency domain channel response of the multichannel transmission channel corresponding to UE back services community to the i-th road receive path of UE, concrete available following formula represents:

$H_{\mathrm{DL}}^{\mathrm{cell}0}(l,k)=\left[\begin{array}{ccccc}{h}_{\mathrm{dl},i-\mathrm{1,0}}^{\mathrm{cell}0}& h_{\mathrm{dl},i-\mathrm{1,1}}^{\mathrm{cell}0}& ...& h_{\mathrm{dl},i-1,n-1}^{\mathrm{cell}0}& h_{\mathrm{dl},i-1,N-1}^{\mathrm{cell}0}\end{array}\right],$

Wherein, represent that the first base station arrives the channel parameter of the i-th road receive path of UE in the down-bound pilot frequency signal that the multiple transmission channels corresponding to Serving cell are launched on a l symbol kth subcarrier. represent the down channel frequency domain of the i-th road receive path of the down-bound pilot frequency signal arrival UE that the n-th road transmission channel is launched on a l symbol kth subcarrier in the multiple transmission channels corresponding to Serving cell, wherein, 1≤n≤N, the number that N is the transmission channel in the first base station corresponding to Serving cell or receive path, i is the numbering of a certain road receive path in the multipath reception passage of UE.

In the implementation that the second is concrete, UE can to the ratio between the downlink frequency domain channel response of the multichannel transmission channel corresponding to the first base station feedback Serving cell and the downlink channel response of specifying transmission channel.Such as, this appointment transmission channel can be the transmission channel 0 in multiple transmission channel.Now, concrete available following formula represents:

$H_{\mathrm{DL}}^{\mathrm{cell}0}(l,k)=\left[\begin{array}{ccccc}1& \frac{h_{\mathrm{dl},i-\mathrm{1,1}}^{\mathrm{cell}0}}{h_{\mathrm{dl},i-\mathrm{1,0}}^{\mathrm{cell}0}}& ...& \frac{h_{\mathrm{dl},i-1,n-1}^{\mathrm{cell}0}}{h_{\mathrm{dl},i-\mathrm{1,0}}^{\mathrm{cell}0}}& \frac{h_{\mathrm{dl},i-1,N-1}^{\mathrm{cell}0}}{h_{\mathrm{dl},i-\mathrm{1,0}}^{\mathrm{cell}0}}\end{array}\right].$

Now, the downlink channel response of transmission channel 0 need not be fed back in the first base station, can feed back that riches all the way less and penetrate the downlink channel response of passage.

In addition, when channel correcting comprises amplitude correction and phasing, in above-mentioned two kinds of concrete implementations, in should comprise amplitude and phase information; When channel correcting only includes phasing, in can comprise amplitude and phase information, also only can comprise phase information.

The downlink frequency domain channel response of the n-th road transmission channel corresponding to Serving cell can with similar complex representation.If when needing to carry out amplitude correction and phasing, available formula represent, wherein θ _n-1represent the channel phase shift angle of down-bound pilot frequency signal to the downlink frequency domain channel response of the i-th road receive path of UE of the multichannel transmission channel Zhong n-th road transmission channel corresponding to the first community, α represents the amplitude of this downlink frequency domain channel response.If when only needing to carry out phasing, available formula represent; Certainly, also amplitude information can be comprised, namely $h_{\mathrm{dl},i-1,n-1}^{\mathrm{cell}0}=\mathrm{\α}\·e^{j{\mathrm{\θ}}_{n-1}}.$

Particularly, the embodiment of the present invention, for the TDDLTE system of 4T4R20MHz system bandwidth, is carried out down channel feedback to UE and is described, and supposes that UE selects the downlink frequency domain channel response on receive path 0 to feed back.

Now, the channel response value that UE can choose on some subcarrier of the symbol of certain OFDM is fed back, as the downlink frequency domain channel response of pilot frequency locations above, or after obtaining the downlink frequency domain channel response of all subcarrier in frequency domain after utilizing pilot frequency locations downlink frequency domain channel response noise reduction filtering, on the symbol 0 of OFDM, take out the form of 1 with 6, obtain the final downlink channel response value needing feedback.

For the first embodiment, now $H_{\mathrm{DL}}^{\mathrm{cell}0}(l,k)=\left[\begin{array}{ccccc}{h}_{\mathrm{dl},0,0}^{\mathrm{cell}0}& h_{\mathrm{dl},0,1}^{\mathrm{cell}0}& & h_{\mathrm{dl},0,2}^{\mathrm{cell}0}& h_{\mathrm{dl},\mathrm{0,3}}^{\mathrm{cell}0}\end{array}\right].$

If comprise amplitude and phase information in downlink frequency domain channel response, then now feedback data amount is: x (bit number that channel information real part or imaginary part represent) * 2 (plural number comprises real part and imaginary part) * 1200/6 (6 take out 1) * 4 (base station 4Tx launches).

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

For the second embodiment, now $H_{\mathrm{DL}}^{\mathrm{cell}0}(l,k)=\left[\begin{array}{cccc}1& \frac{h_{\mathrm{dl},\mathrm{0,1}}^{\mathrm{cell}0}}{h_{\mathrm{dl},\mathrm{0,0}}^{\mathrm{cell}0}}& \frac{h_{\mathrm{dl},\mathrm{0,2}}^{\mathrm{cell}0}}{h_{\mathrm{dl},\mathrm{0,0}}^{\mathrm{cell}0}}& \frac{h_{\mathrm{dl},\mathrm{0,3}}^{\mathrm{cell}0}}{h_{\mathrm{dl},\mathrm{0,0}}^{\mathrm{cell}0}}\end{array}\right].$

If comprise amplitude and phase information in downlink frequency domain channel response, owing to only feeding back j=1,2, the passage of 3, now feedback data amount is: x (bit number that channel information real part or imaginary part represent) * 2 (plural number comprises real part and imaginary part) * 1200/6 (6 take out 1) * 3 (base station 4Tx launches).

If only comprise phase place in downlink frequency domain channel response and do not comprise amplitude information, owing to only feeding back j=1, the passage of 2,3, feedback data amount is: x (bit number that channel information phase place represents) * 1200/6 (6 take out 1) * 3 (base station 4Tx launches).

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 sends, and therefrom obtains the downlink frequency domain channel response of Serving cell Cell0.

The up domain channel response of the 305, first acquisition Serving cell, base station.

First base station is receiving the downlink frequency domain channel response of Serving cell Cell0, can obtain the up domain channel response of Serving cell Cell0.Particularly, the first base station obtains up domain channel response by up DMRS or SRS message.

The technological means that up domain channel response adopts is obtained for the first base station, can with reference to prior art, the embodiment of the present invention does not limit at this.

The up channel response that first base station obtains, corresponding with the downlink channel response that UE sends.Should understand, if UE sends the downlink channel response of the n-th road sendaisle in multichannel transmission channel corresponding to Serving cell, then in the multipath reception passage of the up channel response that obtains of the first base station for Serving cell corresponding to, the up channel of the n-th road receive path responds.

The first specific implementation, corresponding with the first concrete implementation in step 303, the available following formula of the up channel response message of the multipath reception passage now corresponding to Serving cell represents:

$H_{\mathrm{UL}}^{\mathrm{cell}0}(l,k)={\left[\begin{array}{ccccc}{h}_{\mathrm{ul},0,i-1}^{\mathrm{cell}0}& h_{\mathrm{ul},1,i-1}^{\mathrm{cell}0}& ...& h_{\mathrm{ul},n-1,i-1}^{\mathrm{cell}0}& h_{\mathrm{dl},N-1,i-1}^{\mathrm{cell}0}\end{array}\right]}^T,$

Wherein, represent up domain channel response during multiple receive path corresponding to Serving cell of down-bound pilot frequency signal arrival that the i-th road transmission channel of UE launches on a l symbol kth subcarrier, represent the up domain channel response of the n-th road receive path in down-bound pilot frequency signal arrival that the i-th road transmission channel of UE launches on a l the symbol kth subcarrier multiple receive paths corresponding to Serving cell, 1≤n≤N, N is the number of the receive path of the first base station.

Should be understood that corresponding receive path with there is corresponding relation in corresponding transmission channel.First base station sends data to UE on the n-th road transmission channel, then the first base station just can receive the data that this UE sends on the n-th road receive path.

The second specific implementation, similar with the implementation that the second in step 303 is concrete, first base station can obtain the multipath reception passage corresponding to Serving cell up domain channel response and specify the up channel of receive path respond between ratio, this appointment receive path is corresponding with the appointment transmission channel of step 303.Such as, this appointment receive path can be the receive path 0 in multiple receive path.Now the available following formula of up channel response message represents:

$H_{\mathrm{UL}}^{\mathrm{cell}0}(l,k)={\left[\begin{array}{ccccc}1& \frac{h_{\mathrm{ul},1,i-1}^{\mathrm{cell}0}}{h_{\mathrm{ul},0,i-1}^{\mathrm{cell}0}}& ...& \frac{h_{\mathrm{ul},n-1,i-1}^{\mathrm{cell}0}}{h_{\mathrm{ul},0,i-1}^{\mathrm{cell}0}}& \frac{h_{\mathrm{ul},N-1,i-1}^{\mathrm{cell}0}}{h_{\mathrm{ul},0,i-1}^{\mathrm{cell}0}}\end{array}\right]}^T.$

When channel correcting comprises amplitude correction and phasing, in above-mentioned two kinds of concrete implementations, in should comprise amplitude and phase information; When channel correcting only includes phasing, in can comprise amplitude and phase information, also only can comprise phase information.

Similarly, the up channel frequency domain of the n-th road receive path corresponding to Serving cell rings also can with similar complex representation.If when needing to carry out amplitude correction and phasing, available formula represent, wherein θ _n-1the channel phase shift angle of up domain channel response when representing the multipath reception passage Zhong n-th road receive path that uplink pilot signal that the i-th road transmission channel of UE is launched arrives corresponding to the first community, α represents the amplitude of this upper signal channel frequency domain response.If when only needing to carry out phasing, available formula represent; Certainly, also amplitude information can be comprised, namely $h_{\mathrm{ul},n-1,i-1}^{\mathrm{cell}0}=\mathrm{\α}\·e^{j{\mathrm{\θ}}_{n-1}}.$

Same with 4T4R20MHz system bandwidth, TDDLTE is example, obtains up domain channel response be described the first base station, and supposes that the up domain channel response of the first base station acquisition is the feedback of the transmission channel 0 of UE.

First base station obtains the up domain channel response of Serving cell Cell0 by up DMRS signaling or SRS signaling.

In the first specific implementation, now $H_{\mathrm{UL}}^{\mathrm{cell}0}(l,k)={\left[\begin{array}{ccccc}{h}_{\mathrm{ul},0,0}^{\mathrm{cell}0}& h_{\mathrm{ul},1,0}^{\mathrm{cell}0}& & h_{\mathrm{ul},\mathrm{2,0}}^{\mathrm{cell}0}& h_{\mathrm{ul},\mathrm{3,0}}^{\mathrm{cell}0}\end{array}\right]}^T,$ Wherein, k is the subcarrier number extracting position.

In the second specific implementation, now $H_{\mathrm{UL}}^{\mathrm{cell}0}(l,k)={\left[\begin{array}{ccccc}1& \frac{h_{\mathrm{ul},1,0}^{\mathrm{cell}0}}{h_{\mathrm{ul},0,0}^{\mathrm{cell}0}}& ...& \frac{h_{\mathrm{ul},\mathrm{2,0}}^{\mathrm{cell}0}}{h_{\mathrm{ul},0,0}^{\mathrm{cell}0}}& \frac{h_{\mathrm{ul},\mathrm{3,0}}^{\mathrm{cell}0}}{h_{\mathrm{ul},0,0}^{\mathrm{cell}0}}\end{array}\right]}^T,$ Wherein, k is the subcarrier number extracting position.

306, first base station carries out channel correcting according to the up domain channel response of Serving cell and downlink frequency domain channel response to Serving cell.

Particularly, the first base station carries out channel correcting according to the up domain channel response of Serving cell and downlink frequency domain channel response to the multichannel transceiver channel corresponding to Serving cell.

According to with the transmitting rectification building-out factor beta of the multichannel transceiver channel corresponding in Serving cell can be determined in first base station _dlwith reception rectification building-out factor beta _ul.

Wherein,

${\mathrm{\β}}_{\mathrm{dl}}=\left[\begin{array}{cccccc}{\mathrm{\β}}_{\mathrm{dl},0}^{\mathrm{cell}0}& 0& 0& 0& 0& 0\\ 0& {\mathrm{\β}}_{\mathrm{dl},1}^{\mathrm{cell}0}& 0& 0& 0& 0\\ 0& 0& ...& 0& 0& 0\\ 0& 0& 0& {\mathrm{\β}}_{\mathrm{dl},n-1}^{\mathrm{cell}0}& 0& 0\\ 0& 0& 0& 0& ...& 0\\ 0& 0& 0& 0& 0& {\mathrm{\β}}_{\mathrm{dl},N-1}^{\mathrm{cell}0}\end{array}\right],$

${\mathrm{\β}}_{\mathrm{ul}}=\left[\begin{array}{cccccc}{\mathrm{\β}}_{\mathrm{ul},0}^{\mathrm{cell}0}& 0& 0& 0& 0& 0\\ 0& {\mathrm{\β}}_{\mathrm{ul},1}^{\mathrm{cell}0}& 0& 0& 0& 0\\ 0& 0& ...& 0& 0& 0\\ 0& 0& 0& {\mathrm{\β}}_{\mathrm{ul},n-1}^{\mathrm{cell}0}& 0& 0\\ 0& 0& 0& 0& ...& 0\\ 0& 0& 0& 0& 0& {\mathrm{\β}}_{\mathrm{ul},N-1}^{\mathrm{cell}0}\end{array}\right].$

represent the transmitting correction channel response penalty coefficient of the first base station in the N road transmission channel corresponding to the first community on the n-th road transmission channel, represent the reception correction channel response penalty coefficient of the first base station in the N road receive path corresponding to the first community on the n-th road receive path, wherein, 1≤n≤N.

Now, baseband digital signal s after the correction of launching on the N road transmission channel corresponding to Serving cell of the first base station _{dl, cal}available following formula represents:

$s_{\mathrm{dl},\mathrm{cal}}=\left[\begin{array}{cccccc}{\mathrm{\β}}_{\mathrm{dl},0}^{\mathrm{cell}0}& 0& 0& 0& 0& 0\\ 0& {\mathrm{\β}}_{\mathrm{dl},1}^{\mathrm{cell}0}& 0& 0& 0& 0\\ 0& 0& ...& 0& 0& 0\\ 0& 0& 0& {\mathrm{\β}}_{\mathrm{dl},n-1}^{\mathrm{cell}0}& 0& 0\\ 0& 0& 0& 0& ...& 0\\ 0& 0& 0& 0& 0& {\mathrm{\β}}_{\mathrm{dl},N-1}^{\mathrm{cell}0}\end{array}\right]\·\left[\begin{array}{c}{s}_0\\ s_1\\ ...\\ s_{n-1}\\ ...\\ s_{N-1}\end{array}\right].$

Wherein, $\left[\begin{array}{c}{s}_0\\ s_1\\ ...\\ s_{n-1}\\ ...\\ s_{N-1}\end{array}\right]$ Represent the baseband digital signal that the first base station is launched on the N road transmission channel corresponding to Serving cell.

In addition, the first base station baseband digital signal r after the correction of the N road receive path reception corresponding to Serving cell _{ul, cal}available following formula represents:

$r_{\mathrm{ul},\mathrm{cal}}=\left[\begin{array}{cccccc}{\mathrm{\β}}_{\mathrm{ul},0}^{\mathrm{cell}0}& 0& 0& 0& 0& 0\\ 0& {\mathrm{\β}}_{\mathrm{ul},1}^{\mathrm{cell}0}& 0& 0& 0& 0\\ 0& 0& ...& 0& 0& 0\\ 0& 0& 0& {\mathrm{\β}}_{\mathrm{ul},n-1}^{\mathrm{cell}0}& 0& 0\\ 0& 0& 0& 0& ...& 0\\ 0& 0& 0& 0& 0& {\mathrm{\β}}_{\mathrm{ul},N-1}^{\mathrm{cell}0}\end{array}\right]\·\left[\begin{array}{c}{r}_0\\ r_1\\ ...\\ r_{n-1}\\ ...\\ r_{N-1}\end{array}\right].$

Wherein, $\left[\begin{array}{c}{r}_0\\ r_1\\ ...\\ r_{n-1}\\ ...\\ r_{N-1}\end{array}\right]$ Represent the baseband digital signal that the N road receive path of the first base station corresponding to Serving cell receives.

For Fig. 1, the transmission channel after correction and the channel response between receive path need meet the following conditions:

wherein h _{tx, n-1}represent the channel response (downlink channel response) after the n-th road transmitting channel correction, h _{rx, n-1}represent the channel response after the n-th road receiving channels calibration (up channel response).

Might as well suppose that the channel response ratio launched between channel and corresponding receive channel is K, namely

$K=\frac{h_{\mathrm{tx},0}}{h_{\mathrm{rx},0}}=\frac{h_{\mathrm{tx},1}}{h_{\mathrm{rx},1}}=...=\frac{h_{\mathrm{tx},n-1}}{h_{\mathrm{rx},n-1}}==\frac{h_{\mathrm{tx},N-1}}{h_{\mathrm{rx},N-1}}.$

For the first implementation of the first specific implementation of step 303 and step 305, then now launch channel and receive channel correct after channel response can represent with following formula:

$h_{\mathrm{tx},n-1}={\mathrm{\β}}_{\mathrm{dl},n-1}^{\mathrm{cell}0}*h_{\mathrm{dl},i-1,n-1}^{\mathrm{cell}0},h_{\mathrm{rx},n-1}={\mathrm{\β}}_{\mathrm{ul},i-1}^{\mathrm{cell}0}*h_{\mathrm{ul},n-1,i-1}^{\mathrm{cell}0}.$

Again according to the channel response launched between channel and corresponding receive channel than K, following formula can be obtained:

$K=\frac{{\mathrm{\β}}_{\mathrm{ul},0}^{\mathrm{cell}0}*h_{\mathrm{ul},0,i-1}^{\mathrm{cell}0}}{{\mathrm{\β}}_{\mathrm{dl},0}^{\mathrm{cell}0}*h_{\mathrm{dl},i-\mathrm{1,0}}^{\mathrm{cell}0}}=\frac{{\mathrm{\β}}_{\mathrm{ul},1}^{\mathrm{cell}0}*h_{\mathrm{ul},1,i-1}^{\mathrm{cell}0}}{{\mathrm{\β}}_{\mathrm{dl},1}^{\mathrm{cell}0}*h_{\mathrm{dl},i-\mathrm{1,1}}^{\mathrm{cell}0}}=...=\frac{{\mathrm{\β}}_{\mathrm{ul},N-1}^{\mathrm{cell}0}*h_{\mathrm{ul},N-1,i-1}^{\mathrm{cell}0}}{{\mathrm{\β}}_{\mathrm{dl},N-1}^{\mathrm{cell}0}*h_{\mathrm{dl},i-1,N-1}^{\mathrm{cell}0}}.$

Now, the first base station can adopt 3 kinds of modes, carries out channel correcting to the N road transceiver channel corresponding to the first community.

First kind of way, channel correcting is only carried out to transmission channel, transmitting channel correction coefficient in the first base station now, receiving channels calibration coefficient that is, the first base station does not need to carry out channel correcting to receive path.

The second way, channel correcting is only carried out to receive path, receiving channels calibration coefficient in the first base station now transmitting channel correction coefficient that is, the first base station does not need to carry out channel correcting to transmission channel.

The third mode, channel correcting is carried out to transmission channel and receive path in the first base station simultaneously.Particularly, receiving channels calibration coefficient can be made, transmitting channel correction coefficient, wherein K ₁, K ₂satisfy condition K ₁/ K ₂=K.

Especially, as K=1, the channel response launching channel is consistent with the channel response of receive channel.

When with the second implementation of the second specific implementation of step 303 and step 305 feedback up-downgoing channel response, correcting mode and said method similar, those skilled in the art can easily by the above-mentioned derivation of equation out, and the embodiment of the present invention does not repeat them here.

Should be understood that in the embodiment of the present invention it is obtain transmit-receive combination channel correcting coefficient by uplink and downlink domain channel response, then in subcarrier in frequency domain, carry out signal compensation.If wish that final compensation is carried out in time domain, so need the result the domain channel response of uplink and downlink differs to transform to time domain, obtain time delay tap, according to the relativeness of multiple passage tap, the x time adjusting multiple passage aligns.

In the embodiment of the present invention, by the downlink frequency domain channel response of community and the up domain channel response of community, channel correcting is carried out to the transceiver channel in community, each the road transceiver channel in community is made to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards, thus make communication system can obtain the array gain that in community, multiple antennas coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

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

401, first base station sends MDT triggering command.

402, UE measures the downlink frequency domain channel response of Serving cell.

Should be understood that the Serving cell mentioned in the embodiment of the present invention, all refer to the Serving cell of UE.

The step 301 of step 401 and step 402 and Fig. 3,302 similar, the embodiment of the present invention does not repeat them 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 cell after, UE can make Fourier transform (FFT) to this downlink frequency domain channel response, transforms to time domain, obtains the descending time domain channel response that this downlink frequency domain channel response is corresponding, and selects one or more footpath to feed back.Should be understood that the down-bound pilot frequency signal that generally UE receives is from transmission antennas transmit, and through reflection; refraction, therefore the modes such as diffraction arrive UE; usually can there is multiple path in the transmission of signal, multipath is here exactly the amplitude and phase place that represent that multiple path is corresponding.Such as, path arrives the signal a*s after UE, and wherein s represents and transmits, then a represents the gain factor (containing real part and imaginary part) namely representing a footpath.

For 20MHz system bandwidth, UE can by the downlink frequency domain channel response of 1200 subcarriers be the FFT of 2048, transform to time domain, obtain the time-domain taps information of downlink channel response, then P multipath feedback of the mould maximum (namely amplitude is maximum) of plural number is selected, or all multipaths arrange from big to small, the X% selecting multipath energy to exceed gross energy feeds back as thresholding.Assuming that fed back P footpath, each footpath has adopted complex representation, then now feedback data amount is: P*x (bit number that channel information real part or imaginary part represent) * 2 (plural number comprises real part and imaginary part) * 4 (base station 4Tx launches).Because maximum P the footpath of mould selected is fed back, the position in each footpath that needs to encode, as the FFT of 2048, need 10bit to represent the position in each footpath, thus feeding back total data volume needs to add P*10bit.

Should be understood that in the time domain channel response information that UE feeds back, contain amplitude and phase information.

404, UE sends MDT message, carries the descending time domain channel response of Serving cell.

Similar with step 303, UE completes measurement by wireless heterogeneous networks (RadioResourceControl, RRC) message and reports, and the content reported is by MDT Message Transmission, and now, the same MeasurementReport message that adopts reports.

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

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

First base station, after receiving the descending time domain channel response of Serving cell, can be inversely transformed into downlink frequency domain channel response, and specific implementation can with reference to prior art, and the embodiment of the present invention does not repeat them here.

The up domain channel response of the 407, first acquisition Serving cell, base station.

Should be understood that and can comprise the up domain channel response that the first base station obtains amplitude and phase place, also can only comprise phase place and not comprise amplitude.

408, first base station carries out channel correcting according to the up domain channel response of Serving cell and downlink frequency domain channel response to Serving cell.

Particularly, the first base station can carry out channel correcting according to the up domain channel response of Serving cell and downlink frequency domain channel response to the multichannel transceiver channel corresponding to Serving cell.

When the up domain channel response of Serving cell only comprises phase place and do not comprise amplitude, only for phase place, channel correcting is carried out to Serving cell; When the up domain channel response of Serving cell comprises phase place and amplitude, for amplitude and phase place, channel correcting is carried out to Serving cell.

The step 305 of step 407 and step 408 and Fig. 3,306 similar, the embodiment of the present invention does not repeat them here.

In the embodiment of the present invention, by the descending time domain channel response of community is transformed to downlink frequency domain channel response, and according to the downlink frequency domain channel response of community and the up domain channel response of community, channel correcting is carried out to the transceiver channel in community, each the road transceiver channel in community is made to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards, thus make communication system can obtain the array gain that in community, multiple antennas coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

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

501, first base station sends MDT triggering command.

First base station can increase two or more indicating bit in the indicating bit information measuring item list, is used to indicate the descending channel information of UE back services community.In the embodiment of the present invention, in the indicating bit information measuring item list, increase 2 indicating bits for the first base station.Now, the indicating bit information of this measurement item list can be as shown in table 5 and table 6.

Table 5.

Table 6.

As shown in table 5, in LTE, measure item list and can comprise indicating bit M1, M2, M3 and M4.Wherein, the effect of M1 with M2 is identical with M1 with M2 of LTE in table 1, M3 and M4 can be used for instruction UE and feeds back the Serving cell of UE and/or the descending channel information of at least one neighbor 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 combination mode, and often kind of combination represents different implications, and such as, the compound mode of M3 and M4 and implication thereof can be as shown in table 7.

Table 7.

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

Certainly, M3+M4 can also represent other implication, and such as can represent back services community and all strong jamming adjacent areas descending channel information with 11, M3+M4 also can also expand to more indicating bits, such as M3+M4+M5, to represent more measurement situation.

Should understand, when Serving cell and adjacent cell joint provide service for UE, just combine for UE provides service on a data channel, the control channel of UE still belongs to the community of UE access, but when UE measures, still can measure providing for UE the signal of the neighbor cell of service as interference signal.

In addition, alternatively, UE is when feedback of down channel information, transmission mode 10 (the TransmissionMode10 of version (Release11) the inside of reusable existing LTE protocol, TM10) channel condition information (ChannelStateInformation related to, CSI) feedback mechanism, MDT also measures the descending channel information of the one or more community of progress feedback or multiple Remote Radio Unit (RemoteRadioUnit, RRU) according to the CSI of configuration.

As shown in table 6, in umts, measure item list and can comprise indicating bit M1, M2, M3 and M4.Wherein, M1, M2 are identical with M3 with M1, M2 of UMTS in table 2 with the effect of M3, and the effect of the M3+M4 in the effect of M4+M5 and table 5 is similar, and the embodiment of the present invention does not repeat them here.

502, UE measures the downlink frequency domain channel response of Serving cell and the first community.

UE measures according to the indicating bit of the measurement item list in MDT triggering command.UE measures the process of the descending channel information of Serving cell and/or neighbor cell, can with reference to prior art, and the embodiment of the present invention does not repeat them here.

Should be understood that the Serving cell mentioned in the embodiment of the present invention, all refer to the Serving cell of UE.

When determining strong jamming adjacent area, can judge based on certain mode, such as, can judge based on the RSRP of Serving cell and adjacent area, if meet Rule of judgment | RSRP _adj-RSRP _service| <Thr is then considered as strong jamming community, wherein RSRP _servicerepresent the descending RSRP of Serving cell, unit dBm, RSRP _adjrepresent the descending RSRP of adjacent area, unit is dBm, Thr is the threshold value determining whether strong jamming community, and unit is dB.Such as, the value of Thr is 6dB, RSRP _servicevalue is-80dBm, RSRP _adjvalue is-85dBm, then now the RSRP of Serving cell and adjacent area meets above-mentioned condition, and adjacent area can be considered the strong jamming community of Serving cell.

MDT triggering command instruction UE back services community and most strong jamming adjacent area descending channel information might as well be supposed, and suppose that the most strong jamming adjacent area that the UE of UE measures is the first community Cell1, and the base station of administration the first community is the first base station, Serving cell is designated as Cell0.Should be understood that and carry out in the process of allied signal transmitting in Serving cell and the first community, the signal of the first cell transmission still can be considered as interference signal when measuring and measure by Serving cell.

With embodiment illustrated in fig. 3 similar, UE can to the downlink frequency domain channel response of the multichannel transmission channel corresponding to the first base station feedback Serving cell, or UE can to the ratio between the downlink frequency domain channel response of the multichannel transmission channel corresponding to the first base station feedback Serving cell and the downlink channel response of specifying transmission channel.When channel correcting comprises amplitude correction and phasing, in feedack, comprise amplitude and phase place; When channel correcting only includes phasing, in feedack, amplitude and phase place can be comprised, also only can comprise phase place.The mode that UE feeds back the downlink frequency domain channel response of the first community is similar.

503, UE sends MDT message, carries the downlink frequency domain channel response of the first community and Serving cell.

A concrete implementation, the downlink frequency domain channel response of the first community and Serving cell can be fed back to the first base station by MDT message is disposable by UE.

Another kind of concrete implementation, UE can community feeding back downlink domain channel response one by one, such as, the downlink frequency domain channel response of first back services community, then the downlink frequency domain channel response feeding back the first community.If there is multiple neighboring interfering cell, with neighboring interfering cell to the downlink frequency domain channel response of the annoyance level of UE by order feedback neighboring interfering cell from high in the end, or the downlink frequency domain channel response of neighboring interfering cell can be fed back by the sequencing measured.

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

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

First base station receives the MDT message that UE sends, and therefrom obtains the downlink frequency domain channel response of the first community Cell1 and Serving cell Cell0.

If UE feedback is descending time domain channel response, then the first base station also needs to convert descending time domain channel response to downlink frequency domain channel response.

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

With embodiment illustrated in fig. 3 similar, the first base station can obtain the up domain channel response of receive path corresponding to the first community Cell1 and Serving cell Cell0 respectively, and the embodiment of the present invention does not repeat them here.

Should be understood that the receive path that Serving cell Cell0 and the first community Cell1 is corresponding, refer to the receive path that transmission channel in the downlink frequency domain channel response reported with UE is corresponding.

506, first base station carries out channel correcting according to the up domain channel response of Serving cell and downlink frequency domain channel response to Serving cell, carries out channel correcting according to the up domain channel response of the first community and downlink frequency domain channel response to the first community.

Particularly, the first base station is after the up domain channel response obtaining Serving cell and downlink frequency domain channel response, and can carry out channel correcting to the multichannel transceiver channel corresponding to Serving cell, specific implementation can with reference to the step 306 of figure 3 embodiment.Similarly, the first base station also can carry out channel correcting according to the up domain channel response of the first community and downlink frequency domain channel response to the multichannel transceiver channel corresponding to the first community, and the embodiment of the present invention does not repeat them here.

After channel correcting, in the transceiver channel of Serving cell and the first community, any two-way transceiver channel is received channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and is sent out the equal or approximately equal of the ratio of channel response afterwards.

In the embodiment of the present invention, by downlink frequency domain channel response and the up domain channel response of Serving cell, and first community downlink frequency domain channel response and up domain channel response, joint channel correction is carried out to Serving cell and the first community, make to combine and send the Serving cell of signal and the transceiver channel of the first community and receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus the array gain making communication system can obtain multiple cell coherent superposition to bring, the performance of the multi-point joint transmission of further raising communication system.

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

601, base station sends MDT message.

Step 601 is similar with the step 501 of Fig. 5, and the embodiment of the present invention does not repeat them here.

602, UE measures the downlink frequency domain channel response of Serving cell and the second community.

UE measures according to the indicating bit of the measurement item list in MDT triggering command.UE measures the process of the descending channel information of Serving cell and/or neighbor cell, can with reference to prior art, and the embodiment of the present invention does not repeat them here.

Should be understood that the Serving cell mentioned in the embodiment of the present invention, all refer to the Serving cell of UE.

MDT triggering command instruction UE back services community and most strong jamming adjacent area descending channel information might as well be supposed, and suppose that the most strong jamming adjacent area that the UE of UE measures is the second community Cell2, and the base station of administration the second community is the second base station, second base station is different from the first base station, and Serving cell is designated as Cell0.Should be understood that and carry out in the process of allied signal transmitting in Serving cell and the second community, the signal that the secondth district launches still can be considered as interference signal when measuring and measure by Serving cell.

The mode of the downlink frequency domain channel response of UE back services community and the second community, similar with the mode of the downlink frequency domain channel response of UE back services community and the first community in step 402, the embodiment of the present invention does not repeat them here.

603, UE sends MDT message, carries the downlink frequency domain channel response of the second community and Serving cell.

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

Step 503, the step 504 of step 603 and step 604 and Fig. 5 are similar, and the embodiment of the present invention does not repeat them here.

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

This information, after the downlink frequency domain channel response of the second community receiving UE feedback, can forward to the second base station by the first base station.

Certainly, if UE feeds back the descending time domain channel response of the second community in step 604, then now the first base station can forward the descending time domain channel response of the second community to the second base station, or is transmitted to the second base station again after being transformed to downlink frequency domain channel response.

The up domain channel response of the 606, first acquisition Serving cell, base station.

Step 606 is similar with step 305 embodiment illustrated in fig. 3, and the embodiment of the present invention does not repeat them here.

607, first base station carries out channel correcting according to the up domain channel response of Serving cell and downlink frequency domain channel response to Serving cell.

Particularly, similar with the step 306 of Fig. 3, the first base station can carry out channel correcting according to the up domain channel response of Serving cell and downlink frequency domain channel response to the multichannel transceiver channel corresponding to Serving cell.

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

Second base station is after the downlink frequency domain channel response receiving the second community Cell2 that the first base station forwards, and can obtain the up domain channel response of the second community Cell2, its specific implementation can with reference to prior art, and the embodiment of the present invention does not repeat them here.

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

Particularly, similar with the step 306 of Fig. 3, second base station is after the up domain channel response and downlink frequency domain channel response of acquisition second community, can according to the up domain channel response of the second community and downlink frequency domain channel response, carry out channel correcting to the multichannel transceiver channel corresponding to the second community, the embodiment of the present invention does not repeat them here.

After channel correcting, in the transceiver channel of Serving cell and the second community, any two-way transceiver channel is received channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and is sent out the equal or approximately equal of the ratio of channel response afterwards.

In the embodiment of the present invention, by downlink frequency domain channel response and the up domain channel response of Serving cell, and second community downlink frequency domain channel response and up domain channel response, joint channel correction is carried out to Serving cell and the second community, make to combine and send the Serving cell of signal and the transceiver channel of the second community and receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus the array gain making communication system can obtain multiple cell coherent superposition to bring, the performance of the multi-point joint transmission of further raising communication system.

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

701, first base station sends MDT triggering command.

Similar with the embodiment shown in Fig. 3, the first base station can increase indicating bit in existing MDT triggering command, is used to indicate the down channel phase difference of UE back services community and neighbor cell.Wherein, this neighbor cell is disturb the strongest one or more neighbor cells.Such as, can increase by 1 indicating bit, as shown in table 3 or table 4, now, the M3 of the table 3 or M4 of table 4 can be used for the down channel phase difference indicating UE back services community and most strong jamming neighbor cell.Again such as, can increase by 2 indicating bits, as shown in table 5 or table 6, for table 5, the implication represented by M3+M4 combination 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 community and most strong jamming adjacent area
10	The down channel phase difference of back services community and 2 strong jamming adjacent areas
		11	The down channel phase difference of back services community and 3 strong jamming adjacent areas

Should be understood that the implication represented by combination of M3+M4 in the embodiment of the present invention can be exchanged, or other similar implication may be represented.In addition, in the embodiment of the present invention, more indicating bit can also be increased, indicate UE to feed back to provide more combination.

702, UE measures the down channel phase difference of Serving cell and the first community.

UE is after the MDT triggering command receiving the first base station transmission, and can determine the number of the neighbor cell needing feedback of down channel phase difference, then UE according to the annoyance level of neighbor cell to UE, can determine the neighbor cell needing feedback of down channel phase difference.Such as, when only having 1 indicating bit to be used to indicate feedback in MDT triggering command, UE only needs to determine 1 most strong jamming adjacent area.Again such as, when there being 2 indicating bits to be used to indicate feedback in MDT triggering command, the M3+M4 value of such as table 8 is the situation of " 11 ", then now UE needs to determine 3 most strong jamming adjacent areas.

Should be understood that the Serving cell mentioned in the embodiment of the present invention, all refer to the Serving cell of UE.

After UE determines most strong jamming adjacent area, the down channel phase difference obtaining Serving cell and most strong jamming adjacent area can be measured further.In the embodiment of the present invention, suppose to comprise in most strong jamming adjacent area the first community belonging to the first base station administration, be designated as Cell1, Serving cell is designated as Cell0.Should be understood that and carry out in the process of allied signal transmitting in Serving cell and the first community, the signal that the firstth district launches still can be considered as interference signal when measuring and measure by Serving cell.

703, UE sends MDT message to the first base station, carries the down channel phase difference of Serving cell and the first community.

UE measurement is fed back by MDT message after obtaining the down channel phase difference of Serving cell and the first community, carries the down channel phase difference of Serving cell and the first community in this MDT message, and wherein, Serving cell and the first community are all for UE provides service.

Might as well suppose that the phase place of Serving cell is θ ^cell0, the phase place of the first community is θ ^cell1, then θ=θ ^cell1-θ ^cell0

Assuming that the first base station and UE safeguard identical code book phase information.

If when feedback data amount is 2bit, the down channel phase difference θ between Serving cell and the first Liang Ge community, community can be embodied by code book below:

c＝[xy]＝[11],[1-1],[1j],[1-j]。

Wherein, j is complex unit, and [11] represent that θ value is 0 °, and [1-1] represents that θ value is 180 °, and [1j] represents that θ value is 90 °, and [1-j] represents that θ value is 270 °.

If when feedback data amount is 3bit, the down channel phase difference between Liang Ge community can be considered to adopt 8PSK mode to carry out code book phase feedback, and phase feedback precision is just 360/8.Certainly, if feedback data amount is more, more accurate feedback accuracy can be improved.

Should be understood that then UE can concentrate feedback in a MDT message if UE needs to feed back multiple down channel phase difference, also only can feed back a down channel phase difference at every turn.

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

First base station, after receiving MDT message, according to the down channel phase difference indication bit of carrying in MDT message, can obtain the down channel phase difference of Serving cell and the first community.

The BF weights of Serving cell and the first community are determined according to the down channel phase difference of Serving cell and the first community in 705, first base station.

In real system, if base station side cannot obtain downlink channel response, can based on TDD reciprocity utilize single community correct after up channel response calculate BF weights, still carry out the transmitting channel correction of single community when downlink.It should be noted that, BF weights here also can be that UE utilizes descending channel information as downlink frequency domain channel estimating, and Signal to Interference plus Noise Ratio etc. calculate the code book (UE can feed back codebook index information to base station side) obtained.

An object lesson of the embodiment of the present invention, determines the BF weights of Serving cell and the first community by following formula.

$\left[\begin{array}{c}{\tilde{u}}_{\mathrm{DL}}^{\mathrm{cell}0}\\ {\tilde{u}}_{\mathrm{DL}}^{\mathrm{cell}1}\end{array}\right]=\left[\begin{array}{cc}x& 0\\ 0& y\end{array}\right]\&CenterDot;\left[\begin{array}{c}{u}_{\mathrm{DL}}^{\mathrm{cell}0}\\ u_{\mathrm{DL}}^{\mathrm{cell}1}\end{array}\right].$

Wherein, represent the BF weights of Serving cell, ${\tilde{u}}_{\mathrm{DL}}^{\mathrm{cell}0}=\left[\begin{array}{c}{\tilde{u}}_0^{\mathrm{cell}0}\\ {\tilde{u}}_1^{\mathrm{cell}0}\\ .\\ .\\ .\\ {\tilde{u}}_{\mathrm{Ntx}0-1}^{\mathrm{cell}0}\end{array}\right],$ represent the BF weights of the first community, ${\tilde{u}}_{\mathrm{DL}}^{\mathrm{cell}1}=\left[\begin{array}{c}{\tilde{u}}_0^{\mathrm{cell}1}\\ {\tilde{u}}_1^{\mathrm{cell}1}\\ .\\ .\\ .\\ {\tilde{u}}_{\mathrm{Ntx}1-1}^{\mathrm{cell}1}\end{array}\right].$ represent the downlink channel response of the transmission channel corresponding to Serving cell main characteristic vector after SVD decomposes, namely first characteristic vector, represent the downlink channel response of the transmission channel corresponding to Serving cell main characteristic vector after SVD decomposes, namely first characteristic vector, 1≤m≤Ntx0,1≤m≤Ntx1, Ntx0 represents the number of the transmission channel of Serving cell, and Ntx1 represents the number of the transmission channel of the first community.In addition, meet following formula:

$H_{\mathrm{DL}}^{\mathrm{cell}0}=v_{\mathrm{DL}}^{\mathrm{cell}0}{\mathrm{\&Lambda;}}_{\mathrm{DL}}^{\mathrm{cell}0}{\left(U_{\mathrm{DL}}^{\mathrm{cell}0}\right)}^H,H_{\mathrm{DL}}^{\mathrm{cell}1}=v_{\mathrm{DL}}^{\mathrm{cell}1}{\mathrm{\&Lambda;}}_{\mathrm{DL}}^{\mathrm{cell}1}{\left(U_{\mathrm{DL}}^{\mathrm{cell}1}\right)}^H.$

In real system, if base station side cannot obtain downlink channel response, can based on TDD reciprocity utilize single community correct after up channel response calculate BF weights, carry out the transmitting channel correction of single community when downlink.It should be noted that, BF weights here also can be that UE utilizes descending channel information as downlink frequency domain channel estimating, and Signal to Interference plus Noise Ratio etc. calculate the code book (UE can feed back codebook index information to base station side) obtained.

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

Adopt single current BF to be emitted as example with Serving cell, according to the BF weights of Serving cell, wave beam forming carried out to the transmission channel corresponding to Serving cell and adopt following formula to represent:

$s_{\mathrm{weight}}^{\mathrm{cell}0}=\left[\begin{array}{c}{\tilde{u}}_0^{\mathrm{cell}0}\\ {\tilde{u}}_1^{\mathrm{cell}0}\\ .\\ .\\ .\\ {\tilde{u}}_{\mathrm{Ntx}0-1}^{\mathrm{cell}0}\end{array}\right]\&CenterDot;\left[s_{\mathrm{org},0}^{\mathrm{cell}0}\right];$

Wherein, represent the BF weighting base band digital signal that the transmission channel corresponding to Serving cell is launched, represent the raw modulation symbols of Serving cell downlink.

Adopt single current BF to be emitted as example with the first community, according to the BF weights of the first community, the following formula table of channel correcting carried out to the transmission channel corresponding to the first community and show:

$s_{\mathrm{weight}}^{\mathrm{cell}1}=\left[\begin{array}{c}{\tilde{u}}_0^{\mathrm{cell}1}\\ {\tilde{u}}_1^{\mathrm{cell}1}\\ .\\ .\\ .\\ {\tilde{u}}_{\mathrm{Ntx}1-1}^{\mathrm{cell}1}\end{array}\right]\&CenterDot;\left[s_{\mathrm{org},0}^{\mathrm{cell}1}\right];$

Wherein, represent the BF weighting base band digital signal that the transmission channel corresponding to the first community is launched, represent the raw modulation symbols that the first cell downlink is launched.

707, according to the wave beam forming result of the transmission channel of Serving cell and/or the wave beam forming result of the first community, the transmission channel to the transmission channel of Serving cell and/or the first community carries out channel correcting.

When Serving cell and first community associated be UE service time, must satisfy condition uE just can be made to obtain the gain of the associated transmissions of Serving cell and the first community.

When carrying out channel correcting to Serving cell and the first community, three kinds of modes also can be adopted to carry out channel correcting.

First kind of way, only carries out phase path correction to transmitting of Serving cell.Now, transmitting of Serving cell is carried out channel correcting and can be represented with following formula:

$s_{\mathrm{dl},\mathrm{cal}}^{\mathrm{cell}0}=e^{\mathrm{j\&theta;}}\&CenterDot;s_{\mathrm{weight}}^{\mathrm{cell}0}.$

The second way, all carries out phase path correction to Serving cell and the first community.Generally, the phase place of θ/2 can be corrected respectively to Serving cell and transmitting of the first community.

Now, transmitting of Serving cell is carried out channel correcting and can be represented with following formula:

$s_{\mathrm{dl},\mathrm{cal}}^{\mathrm{cell}0}=e^{\mathrm{j\&theta;}/2}\&CenterDot;s_{\mathrm{weight}}^{\mathrm{cell}0}.$

Now, transmitting of the first community is carried out channel correcting and can be represented with following formula:

$s_{\mathrm{dl},\mathrm{cal}}^{\mathrm{cell}1}=e^{-\mathrm{j\&theta;}/2}\&CenterDot;s_{\mathrm{weight}}^{\mathrm{cell}1}.$

The third kind of mode, only carries out phase path correction to transmitting of the first community.Now, transmitting of the first community is carried out channel correcting and can be represented with following formula:

$s_{\mathrm{dl},\mathrm{cal}}^{\mathrm{cell}1}=e^{-\mathrm{j\&theta;}}\&CenterDot;s_{\mathrm{weight}}^{\mathrm{cell}1}.$

In the embodiment of the present invention, by the down channel phase difference between Serving cell and the first community to channel correcting is carried out in Serving cell and the first community excessively, make the transceiver channel of Serving cell and the first community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus the array gain making communication system can obtain multiple cell coherent superposition to bring, improve the performance of the multi-point joint transmission of communication system further.

The method of the embodiment of the present invention, also extends to multiple community and exists in the scene of phase difference.Now, one of them community can be set to benchmark community, all the other communities make phase place identical with the phase place of benchmark community by correcting.

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

801, first base station sends MDT triggering command.

Step 801 is similar with the step 701 of Fig. 7, and the embodiment of the present invention does not repeat them here.

802, UE measures the down channel phase difference of Serving cell and the second community.

UE is after the MDT triggering command receiving the first base station transmission, and can determine the number of the neighbor cell needing feedback of down channel phase difference, then UE according to the annoyance level of neighbor cell to UE, can determine the neighbor cell needing feedback of down channel phase difference.Such as, when only having 1 indicating bit to be used to indicate feedback in MDT triggering command, UE only needs to determine 1 most strong jamming adjacent area.Again such as, when there being 2 indicating bits to be used to indicate feedback in MDT triggering command, the M3+M4 value of such as table 8 is the situation of " 11 ", then now UE needs to determine 3 most strong jamming adjacent areas.

Should be understood that the Serving cell mentioned in the embodiment of the present invention, all refer to the Serving cell of UE.

After UE determines most strong jamming adjacent area, the down channel phase difference obtaining Serving cell and most strong jamming adjacent area can be measured further.In the embodiment of the present invention, suppose to comprise in most strong jamming adjacent area the second community belonging to the second base station administration, be designated as Cell1, Serving cell is designated as Cell0.Wherein, the second base station and the first base station are not same base stations.

803, UE sends MDT message to the first base station, carries the down channel phase difference of Serving cell and the second community.

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

Step 703, the step 704 of step 803, step 804 and Fig. 7 are similar, and the embodiment of the present invention does not repeat them here.

805, first base station is to the down channel phase difference of the second transmission Serving cell, base station and the second community.

Particularly, the code book of the down channel phase difference representing Serving cell and the second community can be sent to the second base station by the first base station.

The BF weights of Serving cell are determined according to the down channel phase difference of Serving cell and the second community in 806, first base station.

The BF weights of the second community are determined according to the down channel phase difference of Serving cell and the second community in 807, second base station.

In step 806 and 807, determine that the method for the BF weights of Serving cell and the second community can with reference to the step 705 of figure 7, the embodiment of the present invention does not repeat them here.

Wave beam forming is carried out according to the transmission channel of BF weights to Serving cell of Serving cell in 808, first base station.

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

In step 808 and 809, the method for the transmission channel of Serving cell and the second community being carried out to wave beam forming can with reference to the step 706 of figure 7, and the embodiment of the present invention does not repeat them here.

809, first base station carries out channel correcting according to the wave beam forming result of the transmission channel of Serving cell to the transmission channel of the transmission channel of Serving cell.

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

Similarly, the method for the transmission channel of Serving cell and the second community being carried out to channel correcting can with reference to the step 707 of figure 7, and the embodiment of the present invention does not repeat them here.

In the embodiment of the present invention, by the down channel phase difference between Serving cell and the second community to channel correcting is carried out in Serving cell and the second community excessively, make the transceiver channel of Serving cell and the second community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus the array gain making communication system can obtain multiple cell coherent superposition to bring, improve the performance of the multi-point joint transmission of communication system further.

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

901, UE receives the MDT triggering command that the first base station sends.

Wherein, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate this UE and measures and the descending channel information feeding back at least one community.

902, this UE carry out the descending channel information of at least one community measuring to obtain this UE according to the measurement item indicating bit in this MDT triggering command.

903, this UE to first base stations send MDT message.

Wherein, first base station is the base station of the Serving cell of this UE of administration, this MDT message carries the descending channel information of at least one community of this UE, so that the first base station is according to the descending channel information of this UE, realize the channel correcting to the transceiver channel of this at least one community, make each the road transceiver channel in this at least one community in any one community receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

In the embodiment of the present invention, UE is according to the MDT triggering command of base station side, by the descending channel information of MDT message at least one community of base station feedback, so that channel correcting is carried out to the transceiver channel of this at least one community in base station, each the road transceiver channel in this at least one community in any one community is made to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards, thus make communication system can obtain the array gain that in community, multiple antennas coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

Further, further, the channel correcting of transceiver channel corresponding at least one community realizing measuring UE also comprises: make any two transceiver channels of combining the community sending signal in this at least one community receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.By doing further correction to combining the transceiver channel of community sending signal, the array gain that communication system can be made to obtain multiple cell coherent superposition bring, improves the performance of the multi-point joint transmission of communication system further.

Alternatively, as an embodiment, the measurement item indicating bit in this MDT triggering command is used to indicate this UE and measures and the downlink channel response feeding back at least one community.Now, step 902 specifically can be embodied as: this UE carries out according to the measurement item indicating bit in this MDT triggering command the downlink channel response measuring to obtain at least one community.Wherein, this MDT message can carry the downlink channel response of the one or more communities in this at least one community, so that the first base station is according to the downlink channel response of this one or more community, channel correcting is carried out to the transceiver channel corresponding to this one or more community.

Alternatively, in a kind of specific implementation of the present embodiment, this downlink channel response is downlink frequency domain channel response.Now, step 902 specifically can be embodied as: this UE carries out according to the measurement item indicating bit in this MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community.

Alternatively, in the another kind of specific implementation of the present embodiment, this downlink channel response is descending time domain channel response.Now, step 902 specifically can be embodied as: this UE carries out according to the measurement item indicating bit in this MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community, and converts this downlink frequency domain channel response to descending time domain channel response.

Alternatively, as another embodiment, the measurement item indicating bit in this MDT triggering command is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE.Now, step 902 specifically can be embodied as: this UE carries out according to the measurement item indicating bit in this MDT triggering command the down channel phase difference between at least one neighbor cell and Serving cell of this UE measuring to obtain this UE.Wherein, this MDT message can carry the down channel phase difference in this at least one neighbor cell between one or more neighbor cell and the Serving cell of this UE, so that the first base station is according to the down channel phase difference between this one or more neighbor cell and Serving cell of this UE, to the transceiver channel corresponding to this one or more neighbor cell, and the transceiver channel corresponding to the Serving cell of this UE carries out channel correcting.

UE realizes the specific embodiment of said method, can with reference to figure 3 to embodiment illustrated in fig. 8, and the embodiment of the present invention does not repeat them here.

Figure 10 is the structural representation of embodiment of the present invention base station 1000.As shown in Figure 10, base station 1000 can comprise: transmitting element 1001, receiving element 1002 and channel correction unit 1003, wherein,

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

Wherein, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate this UE and measures and the descending channel information feeding back at least one community.

Receiving element 1002, for receiving the MDT message that this UE feeds back.

Wherein, this MDT message carries the descending channel information of at least one community that this UE measures.

Channel correction unit 1003, for the descending channel information of at least one community measured according to this UE, realize the channel correcting of the transceiver channel corresponding at least one community that this UE is measured, make each the road transceiver channel in this at least one community in any one community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

In the embodiment of the present invention, base station 1000 by indicating UE feedback of down channel information in MDT triggering command, and according to the descending channel information of at least one community of UE feedback, realize the channel correcting of the transceiver channel (receiving and transmission channel) to this at least one community, make transceiver channel in community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus make communication system can obtain the array gain that in community, multiple antennas coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

Further, at the descending channel information of at least one community for measuring according to this UE, realize in the process of the channel correcting of the transceiver channel corresponding at least one community measured this UE, channel correction unit 1003 is also provided for any two transceiver channels of combining the community sending signal in this at least one community, and to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.In the embodiment of the present invention, by doing further correction to combining the transceiver channel of community sending signal, the array gain that communication system can be made to obtain multiple cell coherent superposition bring, improves the performance of the multi-point joint transmission of communication system further.

Alternatively, as an embodiment, this measurement item indicating bit is used to indicate this UE and measures and the downlink channel response feeding back at least one community, the first community at least one community that this UE measures is the community that base station 1000 is administered, this MDT message carries the downlink channel response of the first community, base station 1000 also can comprise acquiring unit 1004, for obtaining the up channel response of the first community; Now, channel correction unit 1003 specifically can be used for, according to the downlink channel response of the first community and up channel response, carrying out channel correcting to the transceiver channel of base station 1000 corresponding to the first community.

Alternatively, in a kind of concrete implementation of the present embodiment, the downlink channel response of the first community comprises: the down-bound pilot frequency signal that base station 1000 is launched at least one road transmission channel corresponding to the first community arrives the first downlink frequency domain channel response during the receive path of this UE.The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the first up domain channel response of base station 1000 when at least one road receive path corresponding to the first community, wherein, at least one road receive path and the base station 1000 at least one road transmission channel one_to_one corresponding first community corresponding to of base station 1000 corresponding to the first community.For according to the downlink channel response of the first community and up channel response, carry out in the process of channel correcting to base station 1000 at the transceiver channel corresponding to the first community, channel correction unit 1003 specifically for: according to this first downlink frequency domain channel response and this first up domain channel response, channel correcting is carried out to the transceiver channel of base station 1000 corresponding to the first community; Wherein, this first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, and this first up domain channel response comprises amplitude and phase information or only comprises phase information.

Alternatively, in the implementation that the another kind of the present embodiment is concrete, the downlink channel response of the first community can comprise the ratio between the first downlink frequency domain channel response when the down-bound pilot frequency signal of launching at least one road transmission channel corresponding to the first community base station 1000 arrives the receive path of this UE and the first designated parameter; The uplink pilot signal that acquiring unit 1004 specifically can be used for acquisition first community arrives the ratio of base station 1000 between the first up domain channel response and the second designated parameter of at least one road receive path corresponding to the first community, wherein, at least one road receive path and the base station 1000 at least one road transmission channel one_to_one corresponding first community corresponding to of base station 1000 corresponding to the first community; Channel correction unit 1003 specifically can be used for according to the ratio between this first downlink frequency domain channel response and the first designated parameter, and the ratio between this first up domain channel response and second designated parameter, channel correcting is carried out to the transceiver channel of base station 1000 corresponding to the first community; Wherein, this the first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, this first up domain channel response comprises amplitude and phase information or only comprises phase information, this first designated parameter is the downlink frequency domain channel response of specifying transmission channel corresponding in the downlink frequency domain channel response of the first community, this second designated parameter is the up domain channel response of specifying receive path corresponding in the up domain channel response of the first community, and this appointment receive path is corresponding with this appointment transmission channel.

Alternatively, in another concrete implementation of the present embodiment, the downlink channel response of the first community can comprise the first descending time domain channel response when the down-bound pilot frequency signal of launching at least one road transmission channel corresponding to the first community base station 1000 arrives the receive path of this UE

Base station 1000 also comprises time-frequency domain converting unit, for converting this first descending time domain channel response to first downlink frequency domain channel response;

The up channel response of the first community comprises: the uplink pilot signal of the first community arrives the first up domain channel response of base station 1000 when at least one road receive path corresponding to the first community, wherein, at least one road receive path and the base station 1000 at least one road transmission channel one_to_one corresponding first community corresponding to of base station 1000 corresponding to the first community;

Channel correction unit 1003, specifically for according to this first downlink frequency domain channel response and this first up domain channel response, carries out channel correcting to the transceiver channel of base station 1000 corresponding to the first community;

Wherein, this first downlink frequency domain channel response and this first descending time domain channel response comprise amplitude and phase information, and this first up domain channel response comprises amplitude and phase information or only comprises phase information.

Alternatively, in another embodiment of the present invention, this measurement item indicating bit is used to indicate this UE and measures and the downlink channel response feeding back at least one community, the second community at least one community that this UE measures is the community of the second base station administration, second base station and base station 1000 are not same base stations, this MDT message carries the downlink channel response of the second community, channel correction unit 1003 is specifically for downlink channel response from transmitting element 1001 to the second base station that sent the second community by, so that channel correcting is carried out to the transceiver channel of the second base station corresponding to the second community in the second base station.

Alternatively, in yet another embodiment of the present invention, this measurement item indicating bit is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE, this MDT message carries the down channel phase difference between the Serving cell of this UE and the first community, first community is the neighbor cell of this UE, and the first community belongs to the community that base station 1000 is administered, channel correction unit 1003 specifically for: according to the down channel phase difference between the Serving cell of this UE and the first community, determine the BF weights of Serving cell and the BF weights of the first community, BF weights according to Serving cell carry out wave beam forming to the transmission channel corresponding to Serving cell, and carry out wave beam forming according to the BF weights of the first community to the transmission channel corresponding to the first community, wave beam forming result according to Serving cell and the first community carries out channel correcting to the transmission channel corresponding to the transmission channel corresponding to Serving cell and the first community.

Alternatively, in yet another embodiment of the present invention, this measurement item indicating bit is used to indicate this UE and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this UE, this MDT message carries the down channel phase difference between the Serving cell of this UE and the second community, second community is the neighbor cell of this UE, and the second community belongs to the community of the second base station administration, second base station and base station 1000 are not same base stations, channel correction unit 1003 specifically for: the BF weights according to Serving cell carry out wave beam forming 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 to send the down channel phase difference between the Serving cell of this UE and the second community to the second base station by transmitting element 1001, so that the BF weights of the second community are determined in the second base station, wave beam forming is carried out to the transmission channel corresponding to the second community, and according to the wave beam forming result of the second community, channel correcting is carried out to the transmission channel corresponding to the second community.

In addition, base station 1000 also can perform the method for Fig. 2, and possesses the first base station at Fig. 2 to function embodiment illustrated in fig. 8, and the embodiment of the present invention does not repeat them here.

Figure 11 is the structural representation of embodiment of the present invention subscriber equipment 1100.Subscriber equipment 1100 can comprise: receiving element 1101, acquiring unit 1102 and transmitting element 1103, wherein,

Receiving element 1101, for receiving the MDT triggering command that the first base station sends, wherein, first base station is the base station of the Serving cell of administration subscriber equipment 1100, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate subscriber equipment 1100 and measures and the descending channel information feeding back at least one community.

Acquiring unit 1102, for carrying out according to the measurement item indicating bit in this MDT triggering command the descending channel information measuring at least one community obtaining subscriber equipment 1100.

Transmitting element 1103, for sending MDT message to the first base station, this MDT message carries the descending channel information of at least one community of subscriber equipment 1100, so that the first base station is according to the descending channel information of subscriber equipment 1100, realize channel correcting to the transceiver channel of this at least one community, make each the road transceiver channel in this at least one community in any one community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

In the embodiment of the present invention, subscriber equipment 1100 is by the MDT triggering command according to base station side, by the descending channel information of MDT message at least one community of base station feedback, so that channel correcting is carried out to the transceiver channel of this at least one community in base station, make transceiver channel in community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus make communication system can obtain the array gain that in community, multiple antennas 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 this at least one community is also comprised: to make in this at least one community any two to combine the transceiver channel of community sending signal to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.In the embodiment of the present invention, by doing further correction to combining the transceiver channel of community sending signal, the array gain that communication system can be made to obtain multiple cell coherent superposition bring, improves the performance of the multi-point joint transmission of communication system further.

Alternatively, as an embodiment, the measurement item indicating bit in this MDT triggering command is used to indicate subscriber equipment 1100 and measures and the downlink channel response feeding back at least one community; Acquiring unit 1102 comprises specifically for the descending channel information carrying out measuring to obtain subscriber equipment 1100 according to the measurement item indicating bit in this MDT triggering command: the downlink channel response carrying out measuring to obtain at least one community according to the measurement item indicating bit in this MDT triggering command; Wherein, this MDT message carries the downlink channel response of the one or more communities in this at least one community, so that the first base station is according to the downlink channel response of this one or more community, channel correcting is carried out to the transceiver channel corresponding to this one or more community.

Alternatively, in a kind of specific implementation of the present embodiment, this downlink channel response is downlink frequency domain channel response, and acquiring unit 1102 is specifically for carrying out according to the measurement item indicating bit in this MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community.

Alternatively, in the another kind of specific implementation of the present embodiment, this downlink channel response is descending time domain channel response, acquiring unit 1102 specifically for: carry out according to the measurement item indicating bit in this MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community, and convert this downlink frequency domain channel response to descending time domain channel response.

Alternatively, as another embodiment, the measurement item indicating bit in this MDT triggering command is used to indicate this subscriber equipment and measures and feed back the down channel phase difference between at least one neighbor cell and Serving cell of this subscriber equipment; Acquiring unit 1102 specifically for: carry out according to the measurement item indicating bit in this MDT triggering command the down channel phase difference between at least one neighbor cell and Serving cell of this subscriber equipment measuring to obtain this subscriber equipment; Wherein, this MDT message carries the down channel phase difference in this at least one neighbor cell between one or more neighbor cell and the Serving cell of this subscriber equipment, so that the first base station is according to the down channel phase difference between this one or more neighbor cell and Serving cell of this subscriber equipment, to the transceiver channel corresponding to this one or more neighbor cell, and the transceiver channel corresponding to the Serving cell of this subscriber equipment carries out channel correcting.

In addition, subscriber equipment 1100 also can perform the method for Fig. 9, and possesses UE at Fig. 3 to function embodiment illustrated in fig. 9, and the embodiment of the present invention does not repeat them here.

Figure 12 is the structural representation of embodiment of the present invention base station 1200.Base station 1200 can comprise processor 1202, memory 1203, reflector 1201 and receiver 1203.

Receiver 1204, reflector 1201, processor 1202 and memory 1203 are interconnected by bus 1206 system.Bus 1206 can be isa bus, pci bus or eisa bus etc.Described bus can be divided into address bus, data/address bus, control bus etc.For ease of representing, only representing with a four-headed arrow in Figure 12, but not representing the bus only having a bus or a type.In concrete application, reflector 1201 and receiver 1204 can be coupled to antenna 1205.

Memory 1203, for depositing program.Particularly, program can comprise program code, and described program code comprises computer-managed instruction.Memory 1203 can comprise read-only memory and random access memory, and provides instruction and data to processor 1202.Memory 1203 may comprise high-speed RAM memory, still may comprise nonvolatile memory (non-volatilememory), such as at least one magnetic disc store.

Processor 1202, the program that execute store 1203 is deposited, and specifically for performing following operation:

By reflector 1201 for sending MDT triggering command to UE, wherein, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate this UE and measures and the descending channel information feeding back at least one community;

Received the MDT message of this UE feedback by receiver 1204, wherein, this MDT message carries the descending channel information of at least one community that this UE measures;

According to the descending channel information of at least one community that this UE measures, realize the channel correcting of the transceiver channel corresponding at least one community that this UE is measured, make each the road transceiver channel in this at least one community in any one community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

The method that above-mentioned first base station of disclosing as any embodiment in Fig. 2 to Fig. 8 of the present invention performs can be applied in processor 1202, or is realized by processor 1202.Processor 1202 may be a kind of integrated circuit (IC) chip, has the disposal ability of signal.In implementation procedure, each step of said method can be completed by the instruction of the integrated logic circuit of the hardware in processor 1202 or software form.Above-mentioned processor 1202 can be general processor, comprises central processing unit (CentralProcessingUnit is called for short CPU), network processing unit (NetworkProcessor is called for short NP) etc.; Can also be digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), ready-made programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components.Can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.The processor etc. of general processor can be microprocessor or this processor also can be any routine.Step in conjunction with the method disclosed in the embodiment of the present invention directly can be presented as that hardware decoding processor is complete, or combines complete by the hardware in decoding processor and software module.Software module can be positioned at random asccess memory, flash memory, read-only memory, in the storage medium of this area maturations such as programmable read only memory or electrically erasable programmable memory, register.This storage medium is positioned at memory 1203, and processor 1202 reads the information in memory 1203, completes the step of said method in conjunction with its hardware.

In the embodiment of the present invention, base station 1200 by indicating UE feedback of down channel information in MDT triggering command, and according to the descending channel information of at least one community of UE feedback, realize the channel correcting of the transceiver channel (receiving and transmission channel) to this at least one community, make transceiver channel in community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus make communication system can obtain the array gain that in community, multiple antennas coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

Further, at the descending channel information of at least one community for measuring according to this UE, realize in the process of the channel correcting of the transceiver channel corresponding at least one community measured this UE, processor 1202 is also provided for any two transceiver channels of combining the community sending signal in this at least one community, and to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.In the embodiment of the present invention, by doing further correction to combining the transceiver channel of community sending signal, the array gain that communication system can be made to obtain multiple cell coherent superposition bring, improves the performance of the multi-point joint transmission of communication system further.

In addition, base station 1200 also can perform the method for Fig. 2, and possesses the first base station at Fig. 2 to function embodiment illustrated in fig. 8, and the embodiment of the present invention does not repeat them here.

Figure 13 is the structural representation of embodiment of the present invention subscriber equipment 1300.Subscriber equipment 1300 can comprise processor 1302, memory 1303, reflector 1301 and receiver 1303.

Receiver 1304, reflector 1301, processor 1302 and memory 1303 are interconnected by bus 1306 system.Bus 1306 can be isa bus, pci bus or eisa bus etc.Described bus can be divided into address bus, data/address bus, control bus etc.For ease of representing, only representing with a four-headed arrow in Figure 13, but not representing the bus only having a bus or a type.In concrete application, reflector 1301 and receiver 1304 can be coupled to antenna 1305.

Memory 1303, for depositing program.Particularly, program can comprise program code, and described program code comprises computer-managed instruction.Memory 1303 can comprise read-only memory and random access memory, and provides instruction and data to processor 1302.Memory 1303 may comprise high-speed RAM memory, still may comprise nonvolatile memory (non-volatilememory), such as at least one magnetic disc store.

Processor 1302, the program that execute store 1303 is deposited, and specifically for performing following operation:

The MDT triggering command of the first base station transmission is received by receiver 1304, wherein, first base station is the base station of the Serving cell of administration subscriber equipment 1300, comprise in this MDT triggering command and measure item indicating bit, this measurement item indicating bit is used to indicate subscriber equipment 1300 and measures and the descending channel information feeding back at least one community;

The descending channel information measuring at least one community obtaining subscriber equipment 1300 is carried out according to the measurement item indicating bit in this MDT triggering command;

MDT message is sent to the first base station by reflector 1301, wherein, this MDT message carries the descending channel information of at least one community of subscriber equipment 1300, so that the first base station is according to the descending channel information of subscriber equipment 1300, realize the channel correcting to the transceiver channel of this at least one community, make each the road transceiver channel in this at least one community in any one community receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

The method that the above-mentioned subscriber equipment disclosed as any embodiment in Fig. 3 to Fig. 9 of the present invention performs can be applied in processor 1302, or is realized by processor 1302.Processor 1302 may be a kind of integrated circuit (IC) chip, has the disposal ability of signal.In implementation procedure, each step of said method can be completed by the instruction of the integrated logic circuit of the hardware in processor 1302 or software form.Above-mentioned processor 1302 can be general processor, comprises central processing unit (CentralProcessingUnit is called for short CPU), network processing unit (NetworkProcessor is called for short NP) etc.; Can also be digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), ready-made programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components.Can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.The processor etc. of general processor can be microprocessor or this processor also can be any routine.Step in conjunction with the method disclosed in the embodiment of the present invention directly can be presented as that hardware decoding processor is complete, or combines complete by the hardware in decoding processor and software module.Software module can be positioned at random asccess memory, flash memory, read-only memory, in the storage medium of this area maturations such as programmable read only memory or electrically erasable programmable memory, register.This storage medium is positioned at memory 1303, and processor 1302 reads the information in memory 1303, completes the step of said method in conjunction with its hardware.

In the embodiment of the present invention, subscriber equipment 1300 is by the MDT triggering command according to base station side, by the descending channel information of MDT message at least one community of base station feedback, so that channel correcting is carried out to the transceiver channel of this at least one community in base station, make transceiver channel in community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards, thus make communication system can obtain the array gain that in community, multiple antennas coherent superposition is brought, improve the performance of the multi-point joint transmission of communication system.

Further, processor 1302 realizes also comprising the channel correcting of the transceiver channel of this at least one community: to make in this at least one community any two to combine the transceiver channel of community sending signal to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.In the embodiment of the present invention, by doing further correction to combining the transceiver channel of community sending signal, the array gain that communication system can be made to obtain multiple cell coherent superposition bring, improves the performance of the multi-point joint transmission of communication system further.

In addition, subscriber equipment 1300 also can perform the method for Fig. 9, and possesses UE at Fig. 3 to function embodiment illustrated in fig. 9, and the embodiment of the present invention does not repeat them here.

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

The communication system 1400 of the embodiment of the present invention, first base station 1401 is by equipment for indicating user 1402 feedback of down channel information in MDT triggering command, and according to the descending channel information of at least one community that subscriber equipment 1402 feeds back, realize the channel correcting of the transceiver channel (receiving and transmission channel) to this at least one community, thus the array gain making communication system can obtain multiple cell coherent superposition to bring, improve the performance of the multi-point joint transmission of communication system.

Alternatively, communication system 1400 also can comprise the second base station 1402.Wherein, subscriber equipment 1402 measure at least one community in the second community be second base station 1402 administer community.Second base station 1402 carries out channel correcting for the channel correcting information sent according to the first base station to the transceiver channel of the second community.

Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.

In several embodiments that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.

If described function using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.

Claims (31)

1. a channel correcting method, is characterized in that, comprising:

First base station sends minimum road test MDT triggering command to user equipment (UE), and comprise in described MDT triggering command and measure item indicating bit, described measurement item indicating bit is used to indicate described UE and measures and the descending channel information feeding back at least one community;

Described first base station receives the MDT message that described UE feeds back, and described MDT message carries the descending channel information of at least one community that described UE measures;

The descending channel information of at least one community that described first base station is measured according to described UE, realize the channel correcting of the transceiver channel corresponding at least one community that described UE is measured, make each the road transceiver channel at least one community described in any one community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

2. the method for claim 1, it is characterized in that, the channel correcting of the transceiver channel corresponding at least one community that described realization is measured described UE also comprises: make any two transceiver channels of combining the community sending signal at least one community described receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

3. method as claimed in claim 1 or 2, it is characterized in that, described measurement item indicating bit is used to indicate described UE and measures and the downlink channel response feeding back at least one community, the first community at least one community that described UE measures is the community of described first base station administration, described MDT message carries the downlink channel response of described first community

Described method also comprises: described first base station obtains the up channel response of described first community;

Described first base station is according to the descending channel information of described first community, carry out channel correcting to the transceiver channel of described first base station corresponding to described first community to comprise: channel correcting, according to the downlink channel response of described first community and up channel response, is carried out to the transceiver channel of described first base station corresponding to described first community in described first base station.

4. method as claimed in claim 3, it is characterized in that, the downlink channel response of described first community comprises: the down-bound pilot frequency signal that described first base station is launched at least one road transmission channel corresponding to described first community arrives the first downlink frequency domain channel response during the receive path of described UE;

The up channel response of described first community comprises: the uplink pilot signal of described first community arrives the first up domain channel response of described first base station when at least one road receive path corresponding to described first community, wherein, at least one road receive path and the described first base station at least one road transmission channel one_to_one corresponding described first community corresponding to of described first base station corresponding to described first community;

Described first base station is according to the downlink channel response of described first community and up channel response, carry out channel correcting to the transceiver channel of described first base station corresponding to described first community to comprise: channel correcting, according to described first downlink frequency domain channel response and described first up domain channel response, is carried out to the transceiver channel of described first base station corresponding to described first community in described first base station;

Wherein, described first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, and described first up domain channel response comprises amplitude and phase information or only comprises phase information.

5. method as claimed in claim 3, it is characterized in that, the downlink channel response of described first community comprises: the first downlink frequency domain channel response when the down-bound pilot frequency signal that described first base station is launched at least one road transmission channel corresponding to described first community arrives the receive path of described UE and the ratio between the first designated parameter;

The up channel response of described first community comprises: the uplink pilot signal of described first community arrives the ratio of described first base station between the first up domain channel response and the second designated parameter of at least one road receive path corresponding to described first community, wherein, at least one road receive path and the described first base station at least one road transmission channel one_to_one corresponding described first community corresponding to of described first base station corresponding to described first community;

Described first base station is according to the downlink channel response of described first community and up channel response, carry out channel correcting to described first base station at the transceiver channel corresponding to described first community to comprise: described first base station is according to the ratio between described first downlink frequency domain channel response and described first designated parameter, and the ratio between described first up domain channel response and described second designated parameter, channel correcting is carried out to the transceiver channel of described first base station corresponding to described first community;

Wherein, described first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, described first up domain channel response comprises amplitude and phase information or only comprises phase information, described first designated parameter is the downlink frequency domain channel response of specifying transmission channel corresponding in the downlink frequency domain channel response of described first community, described second designated parameter is the up domain channel response of specifying receive path corresponding in the up domain channel response of described first community, and described appointment receive path is corresponding with described appointment transmission channel.

6. method as claimed in claim 3, it is characterized in that, the downlink channel response of described first community comprises: the down-bound pilot frequency signal that described first base station is launched at least one road transmission channel corresponding to described first community arrives the first descending time domain channel response during the receive path of described UE

Described method also comprises: described first base station converts described first descending time domain channel response to first downlink frequency domain channel response;

The up channel response of described first community comprises: the uplink pilot signal of described first community arrives the first up domain channel response of described first base station when at least one road receive path corresponding to described first community, wherein, at least one road receive path and the described first base station at least one road transmission channel one_to_one corresponding described first community corresponding to of described first base station corresponding to described first community;

Described first base station is according to the downlink channel response of described first community and up channel response, carry out channel correcting to the transceiver channel of described first base station corresponding to described first community to comprise: channel correcting, according to described first downlink frequency domain channel response and described first up domain channel response, is carried out to the transceiver channel of described first base station corresponding to described first community in described first base station;

Wherein, described first downlink frequency domain channel response and described first descending time domain channel response comprise amplitude and phase information, and described first up domain channel response comprises amplitude and phase information or only comprises phase information.

7. method as claimed in claim 1 or 2, be characterised in that, described measurement item indicating bit is used to indicate described UE and measures and the downlink channel response feeding back at least one community, the second community at least one community that described UE measures is the community of the second base station administration, described second base station and described first base station are not same base stations, described MDT message carries the downlink channel response of described second community

The descending channel information of at least one community that described first base station is measured according to described UE, realizes comprising the channel correcting of the transmission channel of at least one community that UE measures:

Described first base station sends the downlink channel response of described second community, so that channel correcting is carried out to the transceiver channel of described second base station corresponding to described second community in described second base station to described second base station.

8. method as claimed in claim 1 or 2, it is characterized in that, described measurement item indicating bit is used to indicate described UE and measures and feed back the down channel phase difference between the Serving cell of at least one neighbor cell and described UE, described MDT message carries the down channel phase difference between the Serving cell of described UE and the first community, described first community is the neighbor cell of described UE, and described first community belongs to the community of described first base station administration

The descending channel information of at least one community that described first base station is measured according to described UE, realizes comprising the channel correcting of the transceiver channel corresponding at least one community of UE measurement:

The wave beam forming BF weights of described Serving cell and the BF weights of described first community, according to the down channel phase difference between the Serving cell of described UE and described first community, are determined in described first base station;

Described first base station carries out wave beam forming according to the BF weights of described Serving cell to the transmission channel corresponding to described Serving cell, and carries out wave beam forming according to the BF weights of described first community to the transmission channel corresponding to described first community;

Described first base station carries out channel correcting according to the wave beam forming result of described Serving cell to the transmission channel corresponding to described Serving cell, and/or carries out channel correcting according to the wave beam forming result of described first community to the transmission channel corresponding to described first community.

9. method as claimed in claim 1 or 2, it is characterized in that, described measurement item indicating bit is used to indicate described UE and measures and feed back the down channel phase difference between the Serving cell of at least one neighbor cell and described UE, described MDT message carries the down channel phase difference between the Serving cell of described UE and the second community, described second community is the neighbor cell of described UE, and described second community belongs to the community of the second base station administration, described second base station and described first base station are not same base stations

The descending channel information of at least one community that described first base station is measured according to described UE, realizes comprising the channel correcting of the transceiver channel corresponding at least one community of UE measurement:

Described first base station is according to the down channel phase difference between the Serving cell of described UE and described second community, determine the wave beam forming BF weights of described Serving cell, BF weights according to described Serving cell carry out wave beam forming to the transmission channel corresponding to described Serving cell, and according to the wave beam forming result of described Serving cell, channel correcting is carried out to the transmission channel corresponding to described Serving cell; And/or

Described first base station sends the down channel phase difference between the Serving cell of described UE and described second community to described second base station, so that the BF weights of described second community are determined in described second base station, wave beam forming is carried out to the transmission channel corresponding to described second community, and according to the wave beam forming result of described second community, channel correcting is carried out to the transmission channel corresponding to described second community.

10. a channel correcting method, is characterized in that, comprising:

User equipment (UE) receives the minimum road test MDT triggering command that the first base station sends, wherein said first base station is the base station of the Serving cell administering described UE, comprise in described MDT triggering command and measure item indicating bit, described measurement item indicating bit is used to indicate described UE and measures and the descending channel information feeding back at least one community;

Described UE carries out according to the measurement item indicating bit in described MDT triggering command the descending channel information measuring at least one community obtaining described UE;

Described UE sends MDT message to described first base station, wherein, described MDT message carries the descending channel information of at least one community of described UE, so that described first base station is according to the descending channel information of described UE, realize the channel correcting to the transceiver channel of at least one community described, make each the road transceiver channel at least one community described in any one community receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

11. methods as claimed in claim 10, it is characterized in that, the channel correcting of described realization to the transceiver channel of at least one community described also comprises: make any two transceiver channels of combining the community sending signal at least one community described receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

12. methods as described in claim 10 or 11, it is characterized in that, the measurement item indicating bit in described MDT triggering command is used to indicate described UE and measures and the downlink channel response feeding back at least one community;

The descending channel information that described UE carries out measuring to obtain described UE according to the measurement item indicating bit in described MDT triggering command comprises: described UE carries out measuring to obtain the downlink channel response of at least one community according to the measurement item indicating bit in described MDT triggering command;

Described MDT message carries the downlink channel response of the one or more communities at least one community described, so that described first base station is according to the downlink channel response of described one or more community, channel correcting is carried out to the transceiver channel corresponding to described one or more community.

13. methods as claimed in claim 12, it is characterized in that, described downlink channel response is downlink frequency domain channel response,

The downlink channel response that described UE carries out measuring to obtain at least one community according to the measurement item indicating bit in described MDT triggering command comprises: described UE carries out according to the measurement item indicating bit in described MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community.

14. methods as claimed in claim 12, it is characterized in that, described downlink channel response is descending time domain channel response,

The downlink channel response that described UE carries out measuring to obtain at least one community according to the measurement item indicating bit in described MDT triggering command comprises:

Described UE carries out according to the measurement item indicating bit in described MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community; Described UE converts described downlink frequency domain channel response to descending time domain channel response.

15. methods as described in claim 10 or 11, it is characterized in that, the measurement item indicating bit in described MDT triggering command is used to indicate described UE and measures and feed back the down channel phase difference between the Serving cell of at least one neighbor cell and described UE;

The descending channel information that described UE carries out measuring to obtain described UE according to the measurement item indicating bit in described MDT triggering command comprises: described UE carries out the down channel phase difference measuring to obtain between at least one neighbor cell of described UE and the Serving cell of described UE according to the measurement item indicating bit in described MDT triggering command;

Described MDT message carries the down channel phase difference at least one neighbor cell described between one or more neighbor cell and the Serving cell of described UE, so that described first base station is according to the down channel phase difference between described one or more neighbor cell and the Serving cell of described UE, to the transceiver channel corresponding to described one or more neighbor cell, and the transceiver channel corresponding to the Serving cell of described UE carries out channel correcting.

16. 1 kinds of base stations, is characterized in that, comprising:

Transmitting element, for sending minimum road test MDT triggering command to user equipment (UE), comprise in described MDT triggering command and measure item indicating bit, described measurement item indicating bit is used to indicate described UE and measures and the descending channel information feeding back at least one community;

Receiving element, for receiving the MDT message that described UE feeds back, described MDT message carries the descending channel information of at least one community that described UE measures;

Channel correction unit, for the descending channel information of at least one community measured according to described UE, realize the channel correcting of the transceiver channel corresponding at least one community that described UE is measured, make each the road transceiver channel at least one community described in any one community receive channel response and the correction of the same subcarrier of synchronization afterwards in the correction of the same subcarrier of synchronization and send out the equal or approximately equal of the ratio of channel response afterwards.

17. base stations as claimed in claim 16, it is characterized in that, at the descending channel information of at least one community for measuring according to described UE, realize in the process of the channel correcting of the transceiver channel corresponding at least one community measured described UE, described channel correction unit is also provided for any two transceiver channels of combining the community sending signal at least one community described, and to receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

18. base stations as described in claim 16 or 17, it is characterized in that, described measurement item indicating bit is used to indicate described UE and measures and the downlink channel response feeding back at least one community, the first community at least one community that described UE measures is the community of described base station administration, described MDT message carries the downlink channel response of described first community

Described base station also comprises acquiring unit, for obtaining the up channel response of described first community;

Described channel correction unit, specifically for according to the downlink channel response of described first community and up channel response, carries out channel correcting to the transceiver channel of described base station corresponding to described first community.

19. base stations as claimed in claim 18, it is characterized in that, the downlink channel response of described first community comprises: the down-bound pilot frequency signal that described base station is launched at least one road transmission channel corresponding to described first community arrives the first downlink frequency domain channel response during the receive path of described UE;

The up channel response of described first community comprises: the uplink pilot signal of described first community arrives the first up domain channel response of described base station when at least one road receive path corresponding to described first community, wherein, at least one road receive path and the described base station at least one road transmission channel one_to_one corresponding described first community corresponding to of described base station corresponding to described first community;

For according to the downlink channel response of described first community and up channel response, carry out in the process of channel correcting to the transceiver channel of described base station corresponding to described first community, described channel correction unit specifically for: according to described first downlink frequency domain channel response and described first up domain channel response, channel correcting is carried out to the transceiver channel of described base station corresponding to described first community;

Wherein, described first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, and described first up domain channel response comprises amplitude and phase information or only comprises phase information.

20. base stations as claimed in claim 18, it is characterized in that, the downlink channel response of described first community comprises: the first downlink frequency domain channel response when the down-bound pilot frequency signal that described base station is launched at least one road transmission channel corresponding to described first community arrives the receive path of described UE and the ratio between the first designated parameter;

The up channel response of described first community comprises: the uplink pilot signal of described first community arrives the ratio of described base station between the first up domain channel response and the second designated parameter of at least one road receive path corresponding to described first community, wherein, at least one road receive path and the described base station at least one road transmission channel one_to_one corresponding described first community corresponding to of described base station corresponding to described first community;

Described channel correction unit specifically for: according to the ratio between described first downlink frequency domain channel response and described first designated parameter, and the ratio between described first up domain channel response and described second designated parameter, channel correcting is carried out to the transceiver channel of described base station corresponding to described first community;

Wherein, described first downlink frequency domain channel response comprises amplitude and phase information or only comprises phase information, described first up domain channel response comprises amplitude and phase information or only comprises phase information, described first designated parameter is the downlink frequency domain channel response of specifying transmission channel corresponding in the downlink frequency domain channel response of described first community, described second designated parameter is the up domain channel response of specifying receive path corresponding in the up domain channel response of described first community, and described appointment receive path is corresponding with described appointment transmission channel.

21. base stations as claimed in claim 18, it is characterized in that, the downlink channel response of described first community comprises: the down-bound pilot frequency signal that described base station is launched at least one road transmission channel corresponding to described first community arrives the first descending time domain channel response during the receive path of described UE

Described base station also comprises time-frequency domain converting unit, for converting described first descending time domain channel response to first downlink frequency domain channel response;

The up channel response of described first community comprises: the uplink pilot signal of described first community arrives the first up domain channel response of described base station when at least one road receive path corresponding to described first community, wherein, at least one road receive path and the described base station at least one road transmission channel one_to_one corresponding described first community corresponding to of described base station corresponding to described first community;

Described channel correction unit specifically for: according to described first downlink frequency domain channel response and described first up domain channel response, channel correcting is carried out to the transceiver channel of described base station corresponding to described first community;

Wherein, described first downlink frequency domain channel response and described first descending time domain channel response comprise amplitude and phase information, and described first up domain channel response comprises amplitude and phase information or only comprises phase information.

22. base stations as described in claim 16 or 17, it is characterized in that, described measurement item indicating bit is used to indicate described UE and measures and the downlink channel response feeding back at least one community, the second community at least one community that described UE measures is the community of the second base station administration, described second base station and described base station are not same base stations, described MDT message carries the downlink channel response of described second community

Described channel correction unit specifically for: send the downlink channel response of described second community, so that channel correcting is carried out to the transceiver channel of described second base station corresponding to described second community in described second base station by described transmitting element to described second base station.

23. base stations as described in claim 16 or 17, it is characterized in that, described measurement item indicating bit is used to indicate described UE and measures and feed back the down channel phase difference between the Serving cell of at least one neighbor cell and described UE, described MDT message carries the down channel phase difference between the Serving cell of described UE and the first community, described first community is the neighbor cell of described UE, and described first community belongs to the community of described base station administration

Described channel correction unit specifically for: according to the down channel phase difference between the Serving cell of described UE and described first community, determine the wave beam forming BF weights of described Serving cell and the BF weights of described first community; BF weights according to described Serving cell carry out wave beam forming to the transmission channel corresponding to described Serving cell, and carry out wave beam forming according to the BF weights of described first community to the transmission channel corresponding to described first community; Wave beam forming result according to described Serving cell and described first community carries out channel correcting to the transmission channel corresponding to the transmission channel corresponding to described Serving cell and described first community.

24. base stations as described in claim 16 or 17, it is characterized in that, described measurement item indicating bit is used to indicate described UE and measures and feed back the down channel phase difference between the Serving cell of at least one neighbor cell and described UE, described MDT message carries the down channel phase difference between the Serving cell of described UE and the second community, described second community is the neighbor cell of described UE, and described second community belongs to the community of the second base station administration, described second base station and described base station are not same base stations, described channel correction unit specifically for:

BF weights according to described Serving cell carry out wave beam forming to the transmission channel corresponding to described Serving cell, and according to the wave beam forming result of described Serving cell, carry out channel correcting to the transmission channel corresponding to described Serving cell; And/or

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

25. 1 kinds of subscriber equipmenies, is characterized in that, comprising:

Receiving element, for receiving the minimum road test MDT triggering command that the first base station sends, wherein said first base station is the base station of the Serving cell administering described UE, comprise in described MDT triggering command and measure item indicating bit, described measurement item indicating bit is used to indicate described subscriber equipment and measures and the descending channel information feeding back at least one community;

Acquiring unit, for carrying out according to the measurement item indicating bit in described MDT triggering command the descending channel information measuring at least one community obtaining described subscriber equipment;

Transmitting element, for sending MDT message to described first base station, wherein, described MDT message carries the descending channel information of at least one community of described subscriber equipment, so that described first base station is according to the descending channel information of described subscriber equipment, realize the channel correcting to the transceiver channel of at least one community described, make each the road transceiver channel at least one community described in any one community receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

26. methods as claimed in claim 25, it is characterized in that, the channel correcting of described realization to the transceiver channel of at least one community described also comprises: make any two transceiver channels of combining the community sending signal at least one community described receive channel response afterwards in the correction of the same subcarrier of synchronization equal with the ratio that channel response is sent out in the correction of the same subcarrier of synchronization afterwards.

27. subscriber equipmenies as described in claim 24 or 25, it is characterized in that, the measurement item indicating bit in described MDT triggering command is used to indicate described subscriber equipment and measures and the downlink channel response feeding back at least one community;

Described acquiring unit comprises specifically for the descending channel information carrying out measuring to obtain described subscriber equipment according to the measurement item indicating bit in described MDT triggering command: the downlink channel response carrying out measuring to obtain at least one community according to the measurement item indicating bit in described MDT triggering command;

Wherein, described MDT message carries the downlink channel response of the one or more communities at least one community described, so that described first base station is according to the downlink channel response of described one or more community, channel correcting is carried out to the transceiver channel corresponding to described one or more community.

28. subscriber equipmenies as claimed in claim 27, it is characterized in that, described downlink channel response is downlink frequency domain channel response,

Described acquiring unit is specifically for carrying out according to the measurement item indicating bit in described MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community.

29. subscriber equipmenies as claimed in claim 27, it is characterized in that, described downlink channel response is descending time domain channel response,

Described acquiring unit specifically for: carry out according to the measurement item indicating bit in described MDT triggering command the downlink frequency domain channel response measuring to obtain at least one community, and convert described downlink frequency domain channel response to descending time domain channel response.

30. subscriber equipmenies as described in claim 25 or 26, it is characterized in that, the measurement item indicating bit in described MDT triggering command is used to indicate described subscriber equipment and measures and feed back the down channel phase difference between the Serving cell of at least one neighbor cell and described subscriber equipment;

Described acquiring unit specifically for: carry out the down channel phase difference measuring to obtain between at least one neighbor cell of described subscriber equipment and the Serving cell of described subscriber equipment according to the measurement item indicating bit in described MDT triggering command;

Wherein, described MDT message carries the down channel phase difference at least one neighbor cell described between one or more neighbor cell and the Serving cell of described subscriber equipment, so that described first base station is according to the down channel phase difference between described one or more neighbor cell and the Serving cell of described subscriber equipment, to the transceiver channel corresponding to described one or more neighbor cell, and the transceiver channel corresponding to the Serving cell of described subscriber equipment carries out channel correcting.

31. 1 kinds of communication systems, is characterized in that, comprising:

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

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