CN103368629A - Channel state information feedback method and device - Google Patents

Abstract

The invention discloses a channel state information (CSI) feedback method and device. The method includes: a set of UE receiving a signaling which is sent by a base station for instructing the UE to feed back the CSI in a preset feedback mode, wherein the CSI includes at least one of the following parts: a phase correct indicator (PCI) and a cooperation channel quality indicator (CQI) under a CoMP cooperation method which is instructed by a base station side through high-level signaling, wherein the cooperation CQI under the CoMP cooperation method which is instructed through the high-level signaling includes a CQI and/or an aggregated CQI which are/is determined on the basis of a predetermined interference value; and according to the signaling, the UE feeds back the CSI carried by a report type which includes the CSI of a sub-band, to the base station. Through the channel state information feedback method and device, reception performance of cooperation UEs is improved.

Description

Channel state information feedback method and device

Technical field

The present invention relates to the communications field, in particular to a kind of channel condition information (Channel State Information is referred to as CSI) feedback method and device.

Background technology

In order to improve the data throughout that is subjected to the larger edge customer of presence of intercell interference in the Cellular Networks, to Long Term Evolution (Long Term Evolution, referred to as LTE) coordinate multipoint technology (Cooperate Multiple Point is referred to as CoMP) technology has been proposed in the systematic research.The CoMP technology has comprised joint transmission (Joint Transmission, referred to as JT), JT refers to that a plurality of sending nodes (TP) cooperate by the spatial domain, be subscriber equipment (User Equipment at identical running time-frequency resource, referred to as UE) send data to improve simultaneously reduce disturbance of signal power, promote the reception Signal to Interference plus Noise Ratio (Signal Information Noise Ratio is referred to as SINR) of UE, realize the lifting of community marginal user performance.Other collaboration method also comprises: cooperative beam formation/cooperative scheduling (Cooperate Beamforming/Cooperate Scheduling, referred to as CB/CS), dynamic node is selected (Dynamic Point Selection, referred to as DPS), the dynamic node a few class technology such as (Dynamic Point Blanking are referred to as DPB) of mourning in silence.What be different from JT is, each subframe of this several method only has a TP to the UE transmitted signal, and other node not transmitted signal avoid interference to UE, also can disturb in the little situation to other UE transmitted signal causing.

Participate in having a main TP among the TP of cooperation at these, other TP of one or more participation cooperations is called cooperation TP.The UE side needs to measure respectively channel condition information (the Channel State Information of the TP that respectively cooperates usually, referred to as CSI), comprise channel coefficient matrix, Signal to Interference plus Noise Ratio (SINR), channel sequence information etc., and with pre-coding matrix indication (Precoding MatricIndicator, referred to as PMI), channel quality indication (Channel Quality Indicator, referred to as CQI), order indication (RankIndicator, referred to as RI) etc., or the form of other indication that may increase newly reports, and below is referred to as the CSI report.All need the TP of UE report CSI to consist of a report set.

For merging (coherent combining), the signal coherence that realizes JT receives the SINR performance with further lifting UE, UE can also indicate (Phase Correct Indicator to the phasing that base station side is fed back between cooperative node, referred to as PCI), perhaps be called inter-CSI-RS resource phase information.Between node phase place be a node with respect to the another one node to the phase difference between the channel coefficients of UE, base station side utilizes this phase information to carry out the relevant merging that phasing is realized a plurality of cooperation TP signals, so that the reception Signal to Interference plus Noise Ratio (SINR) of receiver side signal acquisition maximum for example calculates the phase correction factor between UE and TP1 and TP2 channel matrix by the following method:

$\widehat{\mathrm{\&theta;}}=\underset{\mathrm{\&theta;}\&Element;\left\{0,\mathrm{\&pi;}/2,\mathrm{\&pi;},3\mathrm{\&pi;}/2\right\}}{\max }({\left|\right|H_1{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000147137050000041.png,HDA0000147137050000051.png"\; state="\{\{state\}\}">W</figure-callout>}}_1+H_2{W}_2{e}^{\mathrm{j\&theta;}}\left|\right|}^2/{\mathrm{\&sigma;}}_{n+I}^2),$

Wherein, θ is phase information, phase correction factor e ^{J θ}=1 ,-1, i ,-i}, H ₁, H ₂Respectively that two cooperative node TP1 and TP2 are to the channel matrix of UE, W ₁, W ₂Pre-encoding codeword corresponding to TP1 and TP2,

It is the variance of interference plus noise.

The accuracy of CQI also affects the receptivity of UE.Employed CQI is different under the different CoMP methods, is referred to as cooperation CQI here, the polymerization CQI that uses in the time of can comprising JT (aggregated CQI), and namely UE supposes that certain several TP carries out JT and CQI after the cooperation of calculating; Perhaps under single TP transmission means such as DPS/DPB/CB/CS, based on the disturbance hypothesis, suppose namely that some cooperation TP does not send any signal on the resource that UE uses or to other UE transmitted signal but can not cause large interference, and the CQI that calculates.

Realize the problem that CoMP need to solve is how to feed back phase correction information and/or cooperation CQI information between TP, and namely how the UE side feeds back to base station side after measuring these CSI.Feedback method among the LTE comprises periodic feedback and non-periodic feedback two classes at present.Wherein non-periodic feedback is triggered by downlink signaling, industry affair channel (Physical Uplink Shared Channel physically, referred to as PUSCH) upper feedback, the feedback capacity restriction is less, and periodic feedback is disposed by high level, periodically capable physically control channel (Physical Uplink Control Channel is referred to as PUCCH) or the upper transmission of PUSCH do not need Dynamic trigger.Periodic feedback is generally base station side provides more rough CSI to select with sending mode and the cooperative node of supporting base station side, and non-periodic feedback then can provide more accurate CSI to be used for concrete user and scheduling of resource.

Cause the base station to obtain the larger problem of CSI signaling consumption under the cooperation mode for CSI feedback method in the correlation technique, not yet propose at present effective solution.

Summary of the invention

Cause the base station to obtain the larger problem of CSI signaling consumption under the cooperation mode for CSI feedback method in the correlation technique, the invention provides a kind of channel state information feedback method and device, to address this problem at least.

According to an aspect of the present invention, a kind of CSI feedback method is provided, comprise: UE receives this UE feeds back CSI in the feedback on reservation pattern the signaling that is used to indicate of base station transmission, wherein, described CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation CQI under the CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of described high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined; Described UE is according to described signaling, described CSI is carried at feed back to described base station in the Report Type that comprises subband CSI.

Preferably, described UE is according to described signaling, described CSI is carried at feed back to described base station in the Report Type that comprises subband CSI and comprise:

In 2 antenna transmission systems and 4 antenna transmission systems, described UE is according to described signaling, described CSI is carried in the Physical Uplink Control Channel PUCCH Report Type 1 feed back to described base station;

In 8 antenna transmission systems, described UE is according to described signaling, described CSI is carried among the Report Type 1a of described PUCCH to feed back to described base station.

Preferably, described CSI is carried at feeds back to described base station in the Physical Uplink Control Channel PUCCH Report Type 1 one of in the following manner:

The bit that subband CQI is corresponding in the described PUCCH Report Type 1 is used for feeding back base station side on the selected subband of described UE by the cooperation CQI under the described CoMP mode of high-level signaling indication, wherein, described polymerization CQI is that the described UE CQI that predetermined sending node TP cooperates is notified in described base station, and the corresponding subband of cooperation CQI under the described CoMP mode is the position of selecting subband by the described UE of the subband label indication of this subband;

Bit corresponding to subband label in the described PUCCH Report Type 1 is used to indicate the corresponding cooperation of polymerization CQI TP combination, and wherein, described TP combination is to be determined according to the Signal to Interference plus Noise Ratio thresholding of base station side configuration by described UE; Bit corresponding to subband CQI in the described PUCCH Report Type 1 is used to indicate described polymerization CQI, and wherein, described polymerization CQI determines in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in described PUCCH Report Type 1, wherein, described subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP;

Bit corresponding to subband label in the described PUCCH Report Type 1 is used to indicate the PCI of predetermined TP; Bit corresponding to subband CQI in the described PUCCH Report Type 1 is used to indicate described polymerization CQI, wherein, described polymerization CQI is that the described UE CQI that predetermined TP cooperates is notified in described base station, and described polymerization CQI and described PCI determine in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in described PUCCH Report Type 1, wherein, described subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP.

Preferably, described CSI is carried at feeds back to described base station among the Physical Uplink Control Channel PUCCH Report Type 1a one of in the following manner:

The bit that subband CQI is corresponding among the described PUCCH Report Type 1a is used for feeding back described base station side on the selected subband of described UE by the cooperation CQI under the CoMP mode of high-level signaling indication, wherein, polymerization CQI among the described cooperation CQI is that the described UE CQI that predetermined sending node TP cooperates is notified in described base station, and the corresponding subband of cooperation CQI under the described CoMP mode is the position of selecting subband by the described UE of the subband label indication of this subband;

Bit corresponding to subband label among the described PUCCH Report Type 1a is used to indicate the corresponding cooperation of polymerization CQI TP combination, and wherein, described TP combination is to be determined according to the Signal to Interference plus Noise Ratio thresholding of base station side configuration by described UE; Bit corresponding to subband CQI in the described PUCCH Report Type 1 is used to indicate described polymerization CQI, and wherein, described polymerization CQI determines in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in described PUCCH Report Type 1, wherein, described subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP;

Bit corresponding to subband label among the described PUCCH Report Type 1a is used to indicate the phasing indication PCI of predetermined TP; Bit corresponding to subband CQI in the described PUCCH Report Type 1 is used to indicate described polymerization CQI, wherein, described polymerization CQI is that the described UE CQI that predetermined TP cooperates is notified in described base station, and described polymerization CQI and described PCI determine in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in described PUCCH Report Type 1, wherein, described subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP.

Preferably,, described CSI is carried in the Report Type that comprises subband CSI feeds back to before the described base station according to described signaling at described UE, also comprise: described UE receives one of the in the following manner information of indication of described base station:

Indicate described UE to report the definite mode of the cooperation CQI under the described CoMP mode by the predetermined bit of high-level signaling, wherein, described definite mode comprises: the combination of the cooperation TP that described polymerization CQI is corresponding, or the mode of described predetermined interference value;

Determine that described UE selects be used for determining Signal to Interference plus Noise Ratio corresponding to described polymerization CQI greater than default thresholding the time, indicate described UE to report the combination of cooperation TP corresponding to predetermined polymerization CQI and CQI that should be predetermined;

Determine that described UE selects be used for determining Signal to Interference plus Noise Ratio corresponding to described polymerization CQI more than or equal to described default thresholding the time, indicate described UE to report polymerization CQI, subband label and/or subband PMI on the subband that this UE selects;

Determine the combination of the corresponding TP cooperation of described polymerization CQI at Downlink Control Information DCI indicating.

Preferably, whether described UE is described based on predetermined CQI and/or the described polymerization CQI that disturbs value to determine by including in the report of predetermined bit indication subband in the report that comprises RI.

Preferably, the report of the described RI of comprising comprises: the PUCCH Report Type 1 in described 2 antenna transmission systems and 4 antenna transmission systems and the PUCCH Report Type 6 in described 8 antenna transmission systems.

Preferably, described feedback on reservation pattern comprises: the periodic feedback pattern 2-1 of Long Term Evolution LTE version 10.

According to a further aspect in the invention, channel state information feedback method is provided, comprise: the base station sends to UE and is used to indicate this UE feeds back CSI in the feedback on reservation pattern signaling, wherein, described CSI comprise following one of at least: phasing indication (PCI), base station side are by the cooperation CQI under the CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of described high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined; Described base station receives described UE according to described signaling, and feedback carries the Report Type that comprises subband CSI of described CSI.

Preferably, the base station sends to UE and is used to indicate this UE feeds back CSI in the feedback on reservation pattern signaling and comprises one of following mode:

Described base station indicates described UE to report the definite mode of the cooperation CQI under the described CoMP mode by high-level signaling by predetermined bit, and wherein, described definite mode comprises: the combination of the cooperation TP that described polymerization CQI is corresponding, or the mode of described predetermined interference value;

Described base station determines that UE selects when being used for determining Signal to Interference plus Noise Ratio corresponding to described polymerization CQI greater than default thresholding, indicates described UE to report the combination of cooperation TP corresponding to predetermined polymerization CQI and CQI that should be predetermined;

The combination of the corresponding TP cooperation of described polymerization CQI is determined in described base station at Downlink Control Information DCI indicating, be used to indicate the UE described polymerization CQI of feedback and/or PCI in the predetermined sub-band report, wherein, described predetermined sub-band is reported as subband report after the report subframe that after the subframe of described DCI place first comprise order information RI.

Preferably, described feedback on reservation pattern comprises: the periodic feedback pattern 2-1 of Long Term Evolution LTE version 10.

In accordance with a further aspect of the present invention, also provide the information feedback device, this application of installation comprises in subscriber equipment:

Receiver module, be used for receiving this UE feeds back CSI in the feedback on reservation pattern the signaling that is used to indicate of base station transmission, wherein, described CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation CQI under the CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of described high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined; Feedback module is used for according to described signaling, described CSI is carried at feed back to described base station in the Report Type that comprises subband CSI.

According to another aspect of the invention, the information feedback device also is provided, this application of installation is in the base station, comprise: sending module, be used for being used to indicate this UE in the signaling of feedback on reservation pattern feedback CSI to the UE transmission, wherein, described CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation CQI under the CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of described high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined; Receiver module is used for receiving described UE according to described signaling, and feedback carries the Report Type that comprises subband CSI of described CSI.

By the present invention, adopt UE according to this UE feeds back CSI in the feedback on reservation pattern the signaling that is used to indicate of base station transmission, to include following one of at least: PCI, the base station CSI by the cooperation CQI under the CoMP cooperation mode of high-level signaling indication is carried in the Report Type that comprises subband CSI and feeds back to the base station, solve base station in the correlation technique and obtained CSI signaling consumption larger problem under the cooperation mode.Thereby realized that the base station sends the CSI that the CoMP cooperation is obtained in instruction to UE, reduced the signaling consumption that system processes this CSI.

Description of drawings

Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:

Fig. 1 is the first pass figure according to the feedback method of the channel condition information of the embodiment of the invention;

Fig. 2 is the second flow chart according to the feedback method of the channel condition information of the embodiment of the invention;

Fig. 3 is the first structured flowchart according to the feedback method of the channel condition information of the embodiment of the invention;

Fig. 4 is the second structured flowchart according to the feedback device of the channel condition information of the embodiment of the invention;

Fig. 5 is the scene schematic diagram according to the JT of the embodiment of the invention;

Fig. 6 is the flow chart that feeds back polymerization CQI in the subband Report Type of feedback model 2-1 according to the embodiment of the invention;

Fig. 7 (a) is according to the report per-point CSI in feedback model 2-1 of the embodiment of the invention or the schematic diagram one of subband polymerization CQI;

Fig. 7 (b) is according to the report per-point CSI in feedback model 2-1 of the embodiment of the invention or the schematic diagram two of subband polymerization CQI;

Fig. 8 is according to the report polymerization CQI in feedback model 2-1 of the embodiment of the invention and the schematic diagram of PCI;

Fig. 9 indicates UE at the schematic diagram of the subband report content of pattern 2-1 according to the base station side of the embodiment of the invention by DCI; And

Figure 10 indicates the afterwards schematic diagram of subband report content according to the UE side in pattern 2-1 of the embodiment of the invention by 1 bit that arranges in the Report Type that is comprising RI.

Embodiment

Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.

Present embodiment provides a kind of CSI feedback method, and Fig. 1 is the first pass figure according to the feedback method of the channel condition information of the embodiment of the invention, and as shown in Figure 1, the method comprises following step S102 and step S104.

Step S102:UE receives this UE feeds back CSI in the feedback on reservation pattern the signaling that is used to indicate of base station transmission, wherein, this CSI comprise following one of at least: phasing indication PCI, base station are by the cooperation CQI under the CoMP cooperation mode of high-level signaling indication, and the cooperation CQI under the CoMP cooperation mode of this high-level signaling indication comprises: based on predetermined CQI and/or the polymerization CQI that disturbs value to determine.

Step S104:UE is according to this signaling, this CSI is carried at feed back to this base station in the Report Type that comprises subband CSI.

Pass through above-mentioned steps, UE is used to indicate this UE feed back CSI in the feedback on reservation pattern signaling according to what the base station sent, will include following one of at least: the CSI of the cooperation CQI under the CoM P cooperation mode that PCI, base station indicate by high-level signaling is carried in the Report Type that comprises subband CSI and feeds back to the base station.Thereby realized that the base station sends the CSI that the CoMP cooperation is obtained in instruction to UE, reduced the signaling consumption that system processes this CSI.

In implementation process, corresponding to different antenna transmission systems, this CSI can be carried in the different Report Types that comprise subband CSI and feed back to the base station.For example: in 2 antenna transmission systems and 4 antenna transmission systems, UE can be according to this signaling, CSI is carried in Physical Uplink Control Channel (Physical Uplink Control Channel is referred to as the PUCCH) Report Type 1 feed back to the base station; In 8 antenna transmission systems, this UE can be according to signaling, CSI is carried among the Report Type 1a of PUCCH to feed back to the base station.By the preferred embodiment, UE can adopt the Report Type corresponding to the different antennae emission system to feed back, and adopts existing Report Type to carry out feedback processing, can reduce signaling consumption.

Corresponding to above-mentioned preferred implementation: in 2 antenna transmission systems and 4 antenna transmission systems, UE can be according to this signaling, CSI is carried in the PUCCH Report Type 1 feeds back to the base station, in practical communication is mutual, one of can be in the following manner CSI be carried at and feeds back to the base station in this PUCCH Report Type 1:

Mode one: the bit that subband CQI is corresponding in the PUCCH Report Type 1 is used for base station side on the selected subband of feedback UE by the cooperation CQI under the CoMP mode of high-level signaling indication, wherein, this polymerization CQI is the CQI that the base station predetermined sending node TP of notice UE cooperates, and the corresponding subband of cooperation CQI under this CoMP mode is the position of selecting subband by the UE of the subband label indication of this subband.

Mode two: bit corresponding to subband label in the PUCCH Report Type 1 is used to indicate the corresponding cooperation of polymerization CQI TP combination, and wherein, this TP combination is to be determined according to the Signal to Interference plus Noise Ratio thresholding of base station side configuration by UE; Bit corresponding to subband CQI in the PUCCH Report Type 1 is used to indicate polymerization CQI, and wherein, this polymerization CQI determines in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in PUCCH Report Type 1, wherein, subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP.

Mode three: bit corresponding to subband label in the PUCCH Report Type 1 is used to indicate the PCI of predetermined TP; Bit corresponding to subband CQI in the PUCCH Report Type 1 is used to indicate polymerization CQI, and wherein, this polymerization CQI is the CQI that the base station predetermined TP of notice UE cooperates, and this polymerization CQI and this PCI determine in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in PUCCH Report Type 1, wherein, subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP.

Corresponding to above-mentioned preferred implementation: in 8 antenna transmission systems, UE can be according to this signaling, CSI be carried among the PUCCH Report Type 1a feed back to the base station, in practical communication is mutual, one of can be in the following manner CSI be carried at and feeds back to the base station in this PUCCH Report Type 1:

Mode one: the bit that subband CQI is corresponding among the PUCCH Report Type 1a is used for base station side on the selected subband of feedback UE by the cooperation CQI under the CoMP mode of high-level signaling indication, wherein, polymerization CQI among this cooperation CQI is the CQI that the base station predetermined sending node TP of notice UE cooperates, and the corresponding subband of cooperation CQI under the CoMP mode is the position of selecting subband by the UE of the subband label indication of this subband;

Mode two: bit corresponding to subband label among the PUCCH Report Type 1a is used to indicate the corresponding cooperation of polymerization CQI TP combination, and wherein, the TP combination is to be determined according to the Signal to Interference plus Noise Ratio thresholding of base station side configuration by UE; Bit corresponding to subband CQI in the PUCCH Report Type 1 is used to indicate polymerization CQI, and wherein, polymerization CQI determines in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in PUCCH Report Type 1, wherein, subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP;

Mode three: bit corresponding to subband label among the PUCCH Report Type 1a is used to indicate the phasing indication PCI of predetermined TP; Bit corresponding to subband CQI in the PUCCH Report Type 1 is used to indicate polymerization CQI, and wherein, this polymerization CQI is the CQI that the base station predetermined TP of notice U E cooperates, and polymerization CQI and PCI determine in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in PUCCH Report Type 1, wherein, subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP.

As a more excellent execution mode, before step S104, also comprise: UE receives one of the in the following manner information of indication of base station:

Mode one: by definite mode that the predetermined bit indication UE of high-level signaling reports the cooperation CQI under the CoMP mode, wherein, determine that mode comprises: the combination of the cooperation TP that polymerization CQI is corresponding, or the predetermined mode of disturbing value;

Mode two: determine that UE selects be used for determining Signal to Interference plus Noise Ratio corresponding to polymerization CQI greater than default thresholding the time, indication UE reports the combination of cooperation TP corresponding to predetermined polymerization CQI and CQI that should be predetermined;

Mode three: determine that UE selects be used for determining Signal to Interference plus Noise Ratio corresponding to polymerization CQI more than or equal to default thresholding the time, indication UE reports polymerization CQI, subband label and/or the subband PMI on the subband that this UE selects;

Mode four: determine the combination of the corresponding TP cooperation of polymerization CQI at Downlink Control Information DCI indicating.

Preferably, in above-mentioned two kinds of preferred report manners, UE indicates in the subband report whether include CQI and/or the polymerization CQI that disturbs value to determine based on predetermined by predetermined bit in the report that comprises RI.More excellent, this report that comprises RI comprises: the PUCCH Report Type 1 in 2 antenna transmission systems and 4 antenna transmission systems and the PUCCH Report Type 6 in 2 antenna transmission systems.

Preferably, this feedback on reservation pattern comprises: the periodic feedback pattern 2-1 of Long Term Evolution (LTE) version 10.This preferred implementation is fed back CSI information in existing feedback model, reduced the research and development expense.

Present embodiment provides a kind of CSI feedback method, and Fig. 2 is the second flow chart according to the feedback method of the channel condition information of the embodiment of the invention, and as shown in Figure 2, the method comprises following step S202 and step S204.

Step S202: the base station sends to UE and is used to indicate this UE feeds back CSI in the feedback on reservation pattern signaling, wherein, CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation CQI under the CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoM P cooperation mode of high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined.

Step S204: the base station receives UE according to this signaling, the Report Type that comprises subband CSI that carries this CSII of feedback.

Pass through above-mentioned steps, the base station sends this UE of indication feed back CSI in the feedback on reservation pattern signaling to UE, and accept to include following one of at least: the CSI of the cooperation CQI under the CoMP cooperation mode that PCI, base station indicate by high-level signaling is carried at the Report Type that comprises subband CSI.Thereby realized that the base station sends the CSI that the CoMP cooperation is obtained in instruction to UE, reduced the signaling consumption that system processes this CSI.

As a more excellent execution mode, in step S202, can realize in the following way that the base station is used to indicate this UE feeds back CSI in the feedback on reservation pattern signaling to the UE transmission:

Mode one: the base station indicates UE to report the definite mode of the cooperation CQI under the CoMP mode by high-level signaling by predetermined bit, and wherein, this determines that mode comprises: the combination of the cooperation TP that polymerization CQI is corresponding, or the predetermined mode of disturbing value.

Mode two: the base station determines that UE selects when being used for determining Signal to Interference plus Noise Ratio corresponding to polymerization CQI greater than default thresholding, and indication UE reports the combination of cooperation TP corresponding to predetermined polymerization CQI and CQI that should be predetermined;

Mode three: the combination of the corresponding TP cooperation of polymerization CQI is determined in the base station at Downlink Control Information DCI indicating, be used to indicate UE feedback polymerization CQI and/or PCI in the predetermined sub-band report, wherein, predetermined sub-band is reported as subband report after the report subframe that after the subframe of DCI place first comprise order information RI.

Preferably, this feedback on reservation pattern comprises: the periodic feedback pattern 2-1 of Long Term Evolution (LTE) version 10.This preferred implementation is fed back CSI information in existing feedback model, reduced the research and development expense.

Need to prove, can in the computer system such as one group of computer executable instructions, carry out in the step shown in the flow chart of accompanying drawing, and, although there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.

In another embodiment, also provide a kind of channel condition information software, this software be used for to be carried out the technical scheme that above-described embodiment and preferred embodiment are described.

In another embodiment, also provide a kind of storage medium, stored above-mentioned channel condition information software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.

The embodiment of the invention also provides a kind of channel condition information device, this device can be applied to UE, this channel condition information device can be used for realizing above-mentioned channel condition information method and preferred implementation, carried out explanation, repeat no more, the below describes the module that relates in this channel condition information device.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described system and method for following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.

Fig. 3 is the first structured flowchart according to the feedback method of the channel condition information of the embodiment of the invention, and as shown in Figure 3, this device comprises: receiver module 32 and feedback module 34, the below is described in detail said structure.

Receiver module 32, be used for receiving this UE feeds back CSI in the feedback on reservation pattern the signaling that is used to indicate of base station transmission, wherein, CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation CQI under the CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined; Feedback module 34 is connected to receiver module 32, is used for the signaling that receives according to receiver module 32, CSI is carried in the Report Type that comprises subband CSI feed back to the base station.

In another embodiment, also provide a kind of channel condition information software, this software be used for to be carried out the technical scheme that above-described embodiment and preferred embodiment are described.

In another embodiment, also provide a kind of storage medium, stored above-mentioned channel condition information software in this storage medium, this storage medium includes but not limited to: CD, floppy disk, hard disk, scratch pad memory etc.

The embodiment of the invention also provides a kind of channel condition information device, this device can be applied to the base station, this channel condition information device can be used for realizing above-mentioned channel condition information method and preferred implementation, carried out explanation, repeat no more, the below describes the module that relates in this channel condition information device.As used below, the combination of software and/or the hardware of predetermined function can be realized in term " module ".Although the described system and method for following examples is preferably realized with software, hardware, perhaps the realization of the combination of software and hardware also may and be conceived.

Fig. 4 is the second structured flowchart according to the feedback device of the channel condition information of the embodiment of the invention, and as shown in Figure 4, this device comprises: sending module 42 and receiver module 44, the below is described in detail said structure.

Sending module 42, be used for being used to indicate this UE in the signaling of feedback on reservation pattern feedback CSI to the user equipment (UE) transmission, wherein, CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation CQI under the CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined; Receiver module 44 is connected to sending module 42, is used for receiving the signaling that UE sends according to sending module 42, the Report Type that comprises subband CSI that carries this CSI of feedback.

Describe below in conjunction with preferred embodiment, following preferred embodiment combines above-described embodiment and preferred implementation.

Preferred embodiment one

This preferred embodiment provides a kind of CSI feedback method, in the present embodiment, during with CoMP JT required polymerization CQI and/or PCI carry out periodic feedback, thereby for base station side in time provides cooperative information, and reduce the signaling consumption that non-periodic feedback brings.

The method of feeding back in the present embodiment is as follows: in the periodic feedback pattern 2-1 of LTE R10 version, the high-level signaling indication UE that base station side can be passed through feeds back polymerization CQI in the Report Type that comprises subband CSI (reporting type), and/or PCI, or the CQI of other CoMP cooperation mode of high-rise indication.

Preferably, in the PUCCH Report Type 1a of the Physical Uplink Control Channel Report Type 1 (PUCCH reporting type 1) of 2 transmitting antennas corresponding to periodic feedback pattern 2-1 and 4 system of transmit antennas or 8 system of transmit antennas, by several different methods feedback polymerization CQI and/or PCI, or the CQI of other CoMP cooperation mode of high-rise indication, several different methods is including but not limited to following mode:

Mode 1: the corresponding bit of subband CQI can be used for the polymerization CQI on the selected subband of feedback UE in above-mentioned Report Type, this polymerization CQI is which TP of hypothesis cooperates and notified to UE by base station side, or feed back the subband CQI of other CoMP cooperation mode of other high-rise indication, and the position by the selected subband of subband label (Sub-band Iabel is referred to as SB) indication;

Mode 2: in above-mentioned Report Type, the bit that the subband label is corresponding is used to indicate the cooperation TP combination that polymerization CQI supposes, this TP combination is to be selected according to the Signal to Interference plus Noise Ratio thresholding of base station side configuration by UE, and the corresponding bit of subband CQI is used to indicate polymerization CQI.This polymerization CQI is that tentation data is selected in the upper transmission of whole corresponding subband group (Bandwidth Part is referred to as BP), if subband PMI is arranged in the Report Type, then is used to indicate the PMI that selects in corresponding BP transmission;

Mode 3: in above-mentioned Report Type, the bit that the subband label is corresponding is used to indicate the PCI of corresponding TP, and the corresponding bit of subband CQI is used for polymerization CQI, and polymerization CQI is which TP cooperation of hypothesis and what calculate is that base station side is notified to UE.Polymerization CQI and PCI are that tentation data is selected in the upper transmission of whole corresponding bandwidth part (BP, subband group), if subband PMI is arranged in the Report Type, then are used to indicate the PMI that selects in corresponding BP transmission;

Preferably, when implementing, calculate base station one of the in the following manner polymerization CQI that reports of the indication UE hypothesis that is based on which TP cooperation.

Mode 1: base station side uses 1 bit or a plurality of bit to indicate a kind of combination of TP cooperation in high-level signaling;

Mode 2: base station side disposes a Signal to Interference plus Noise Ratio thresholding by high-level signaling to UE, when the Signal to Interference plus Noise Ratio of calculating is greater than this thresholding when the TP of UE selection set cooperation, then report corresponding polymerization CQI, and the combination of indication cooperation TP, otherwise subband CQI, subband label that feedback UE selects, and (if any) subband PMI;

Mode 3: base station side Downlink Control Information DCI indicating calculate polymerization CQI based on the TP cooperative inclusion.

Preferably, base station side is known one of in the following manner the content that UE reports.

Mode 1: in periodic feedback pattern 2-1, report polymerization CQI if the cooperation TP that base station side is calculated polymerization CQI by high-level signaling configuration is combined notice UE, then comprise polymerization CQI in the subband Report Type of the pattern 2-1 of corresponding TP, and/or PCI;

Mode 2: if whether base station side reports polymerization CQI by configuration Signal to Interference plus Noise Ratio thresholding for UE provides, and/or PCI, then UE need to use the indication of 1 bit in the respective sub-bands report, whether has reported polymerization CQI;

Mode 3: if base station side by DCI indication UE polymerization CQI institute based on the TP combination, then UE subband after the nearest report subframe that comprises RI the subframe of DCI place after feeds back corresponding polymerization CQI in reporting, and/or PCI;

Mode 4: in periodic feedback pattern 2-1, report polymerization CQI if the cooperation TP that base station side is calculated polymerization CQI by high-level signaling configuration is combined notice UE, or whether base station side reports polymerization CQI by configuration Signal to Interference plus Noise Ratio thresholding for UE provides, then UE is in the report that comprises RI, i.e. corresponding PUCCH Report Type 3 or PUCCH Report Type 6 corresponding to 8 antenna systems of 2 and 4 antenna systems, by polymerization CQI whether in the report of the subband after the 1 bit indication, or the subband CQI of other CoMP cooperation mode of high-rise indication.

Preferred embodiment two

This preferred embodiment provides a kind of CSI feedback method, and present embodiment is based on CoMP JT system, and as shown in Figure 5,3 TP consist of the cooperation set of UE, namely can cooperate by 2 TP in the cooperation set, also can cooperate by 3 TP.TP1, TP2, TP3 are respectively H1, H2, H3 to the channel of UE.Take TP1 as reference node, H2, the H3 phase difference between H1 is respectively θ ₁₂, θ ₁₃Wherein, θ ₁₂And θ ₁₃Can optimally choose in several ways, for example,

Maximum signal merges received power:

${\widehat{\mathrm{\&theta;}}}_{12},{\widehat{\mathrm{\&theta;}}}_{13}=\underset{{\mathrm{\&theta;}}_{12},{\mathrm{\&theta;}}_{13}=\{0,\mathrm{\&pi;}/2,\mathrm{\&pi;},3\mathrm{\&pi;}/2\}}{\max }\left\{{\left|\right|H_1{\mathrm{<figure-callout\; id="1"\; label="W"\; filenames="HDA0000147137050000041.png,HDA0000147137050000051.png"\; state="\{\{state\}\}">W</figure-callout>}}_1+H_2{W}_2{e}^{j{\mathrm{\&theta;}}_{12}}+H_3{W}_3{e}^{j{\mathrm{\&theta;}}_{13}}\left|\right|}^2\right\},$ Wherein,

H ₁, H ₂Respectively that two cooperative node TP1 and TP2 are to the channel matrix of UE, W ₁, W ₂Pre-encoding codeword corresponding to TP1 and TP2.

Or hypothesis least mean-square error MMSE receiver, maximization receives Signal to Interference plus Noise Ratio SINR and determines by following formula:

${\mathrm{\&theta;}}_{12},{\mathrm{\&theta;}}_{13}=\underset{{\mathrm{\&theta;}}_{12},{\mathrm{\&theta;}}_{13}=\{0,\mathrm{\&pi;}/2,\mathrm{\&pi;},3\mathrm{\&pi;}/2\}}{\max }\left\{{\left|\right|f^H{R}_{n+I}^{-1}f\left|\right|}^2\right\},$

Wherein, R _N+IThe interference-plus-noise covariance matrix, phase correction factor e ^{J θ}=1, and-1, i ,-i} corresponds respectively to θ={ 0, pi/2, π, 3 pi/2s }.

Preferably, the TP of transmitted signal realizes the relevant merging of signal in the UE side behind the phasing of use to optimize selecting.

Preferred embodiment three

Present embodiment provides a kind of CSI feedback method, and Fig. 6 is the flow chart that feeds back polymerization CQI in the subband Report Type of feedback model 2-1 according to the embodiment of the invention, and as shown in Figure 6, the method comprises the steps that S602 is to step S610.Be elaborated below in conjunction with 6 pairs of flow processs to present embodiment of accompanying drawing.

The CoMP JT system of present embodiment as shown in Figure 5, TP1, TP2 and TP3 unite the transmitted signal to UE.Wherein TP1 is host node or reference node, and TP2 and TP3 are cooperative node.The assumption period feedback is configured to pattern 2-1, i.e. the subband CQI of UE selection, and broadband P MI.3 TP are 4 transmitting antenna systems.

Step S602:UE is in independently CSI (per-csi-rs resource CSI) report of PUCCH each TP of feedback, and outer interference of hypothesis cooperation set.

Step S604: base station side is determined cooperation TP and collaboration mode according to the cycle CSI report of each TP.

Step S606: base station side according to each TP independently CSI judge wherein which TP in what CoMP mode cooperates, JT or dynamic node are selected (Dynamic Point Select, referred to as DPS)/cooperative beam formation (Cooperative Beamforming, referred to as CB)/cooperative scheduling (Cooperative Scheduling is referred to as CS).

Step S608: if JT, the base station side notice is participated in the TP combination of JT, and UE is according to the subband polymerization CQI on the selected subband of indication calculating.

Step S610: if DPS/CSCB, base station side notice UE report content, UE according to indication calculate based on corresponding cooperation mode on selected subband CQI (regulation is disturbed the subband CQI of hypothesis).

In the present embodiment, base station side is notified the feedback polymerization CQI of UE in the subband Report Type of feedback model 2-1 by high-level signaling, and notifies TP1, TP2 and TP3 to carry out polymerization, and feeds back in CSI report corresponding to TP1.

In the present embodiment, polymerization CQI when the UE side obtains three TP and carries out JT by measurement and calculation, indicate corresponding subband polymerization CQI with bit corresponding to subband CQI in the subband Report Type 1, and the broadband Report Type is still reported independently CSI of TP, or be called per-csi-rs resource CSI, or per-point CSI.

Add the feedback model 2-1 of feedback subband polymerization CQI in the present embodiment shown in Fig. 7 (a) and Fig. 7 (b), wherein, Fig. 7 (a) shows R10 version 2 or 4 transmitting antenna periodic feedback pattern 2-1, and Fig. 7 (b) shows at 2/4 transmitting antenna feedback polymerization CQI in the report of periodic feedback pattern 2-1 subband.In above-mentioned accompanying drawing, WB W refers to broadband P MI, and WB CQI refers to broadband CQI, and SB Label refers to the subband label, and Agg.CQI refers to polymerization CQI.In each subband report, indicate the subband of UE selection with SB Label, and feed back the polymerization CQI when JT is carried out in the corresponding TP combination of hypothesis on the respective sub-bands.

Preferred embodiment four

Present embodiment provides a kind of CSI feedback method, the CoMP JT system of present embodiment as shown in Figure 5, TP1, TP2 and TP3 unite the transmitted signal to UE.Wherein TP1 is host node or reference node, and TP2 and TP3 are cooperative node.The assumption period feedback is configured to pattern 2-1, i.e. the subband CQI of UE selection, and broadband P MI.3 TP are 4 transmitting antenna systems.

What this preferred embodiment and preferred embodiment three were different is, in the subband Report Type of feedback model 2-1, bit corresponding to subband indication numbers is used to indicate PCI, and bit corresponding to subband CQI still is used to refer to polymerization CQI, and PCI and polymerization CQI are upper transmission of the tangible whole corresponding BP of data of hypothesis JT.This report type schematic diagram as shown in Figure 8.

Preferred embodiment five

Present embodiment provides a kind of CSI feedback method, the CoMP JT system of present embodiment as shown in Figure 5, TP1, TP2 and TP3 unite the transmitted signal to UE.Wherein TP1 is host node or reference node, and TP2 and TP3 are cooperative node.The assumption period feedback is configured to pattern 2-1, i.e. the subband CQI of UE selection, and broadband P MI.3 TP are 4 transmitting antenna systems.

What this preferred embodiment and preferred embodiment three were different is the TP combination that base station side is calculated polymerization CQI by 2 bits notice UE among the DCI.Wherein, 00 each TP of expression report outer subband CQI that disturbs of set that supposes separately to cooperate, the polymerization CQI of 01 expression report hypothesis TP1 and TP2 cooperation, the polymerization CQI of 10 expression report hypothesis TP1 and TP3 cooperation, the polymerization CQI of 11 expression report hypothesis TP2 and TP3 cooperation.UE begins to report the subband polymerization CQI of corresponding TP combination in the subband report after nearest RI report after receiving DCI.This report type schematic diagram as shown in Figure 9.

Preferred embodiment six

Present embodiment provides a kind of CSI feedback method, the CoMP JT system of present embodiment as shown in Figure 5, TP1, TP2 and TP3 unite the transmitted signal to UE.Wherein TP1 is host node or reference node, and TP2 and TP3 are cooperative node.The assumption period feedback is configured to pattern 2-1, i.e. the subband CQI of UE selection, and broadband P MI.3 TP are 4 transmitting antenna systems.

What this preferred embodiment and preferred embodiment three were different is, UE can do in 3 at the PUCCH Report Type, by 1 bit (reporting type indicator, RTI) the subband report content after the indication, if RTI=0 then report each TP outer subband CQI that disturbs of set that supposes separately to cooperate, if RTI=1 then report subband polymerization CQI is until RTI changes.The dried schematic diagram of Report Type energy as shown in figure 10.

Pass through above-described embodiment, a kind of CSI feedback method and device are provided, be used to indicate this UE feed back CSI in the feedback on reservation pattern signaling by UE according to what the base station sent, will include following one of at least: the CSI of the cooperation CQI under the CoMP cooperation mode that PCI, base station indicate by high-level signaling is carried in the Report Type that comprises subband CSI and feeds back to the base station.Thereby realized that the base station sends the CSI that the CoMP cooperation is obtained in instruction to UE, reduced the signaling consumption that system processes this CSI.Need to prove that these technique effects are not that above-mentioned all execution modes have, some technique effect is that some preferred implementation just can obtain.

Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, carried out by calculation element thereby they can be stored in the storage device, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.

The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (13)

1. channel condition information CSI feedback method is characterized in that comprising:

User equipment (UE) receives this UE feeds back CSI in the feedback on reservation pattern the signaling that is used to indicate of base station transmission, wherein, described CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation channel quality information CQI under the coordinate multipoint CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of described high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined;

Described UE is according to described signaling, described CSI is carried at feed back to described base station in the Report Type that comprises subband CSI.

2. method according to claim 1 is characterized in that, described UE is according to described signaling, described CSI is carried at feed back to described base station in the Report Type that comprises subband CSI and comprise:

In 2 antenna transmission systems and 4 antenna transmission systems, described UE is according to described signaling, described CSI is carried in the Physical Uplink Control Channel PUCCH Report Type 1 feed back to described base station;

In 8 antenna transmission systems, described UE is according to described signaling, described CSI is carried among the Report Type 1a of described PUCCH to feed back to described base station.

3. method according to claim 2 is characterized in that, described CSI is carried to feed back to described base station in the Physical Uplink Control Channel PUCCH Report Type 1 one of in the following manner:

The bit that subband CQI is corresponding in the described PUCCH Report Type 1 is used for feeding back base station side on the selected subband of described UE by the cooperation CQI under the described CoMP mode of high-level signaling indication, wherein, described polymerization CQI is that the described UE CQI that predetermined sending node TP cooperates is notified in described base station, and the corresponding subband of cooperation CQI under the described CoMP mode is the position of selecting subband by the described UE of the subband label indication of this subband;

Bit corresponding to subband label in the described PUCCH Report Type 1 is used to indicate the corresponding cooperation of polymerization CQI TP combination, and wherein, described TP combination is to be determined according to the Signal to Interference plus Noise Ratio thresholding of base station side configuration by described UE; Bit corresponding to subband CQI in the described PUCCH Report Type 1 is used to indicate described polymerization CQI, and wherein, described polymerization CQI determines in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in described PUCCH Report Type 1, wherein, described subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP;

Bit corresponding to subband label in the described PUCCH Report Type 1 is used to indicate the PCI of predetermined TP; Bit corresponding to subband CQI in the described PUCCH Report Type 1 is used to indicate described polymerization CQI, wherein, described polymerization CQI is that the described UE CQI that predetermined TP cooperates is notified in described base station, and described polymerization CQI and described PCI determine in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in described PUCCH Report Type 1, wherein, described subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP.

4. method according to claim 2 is characterized in that, described CSI is carried to feed back to described base station among the Physical Uplink Control Channel PUCCH Report Type 1a one of in the following manner:

The bit that subband CQI is corresponding among the described PUCCH Report Type 1a is used for feeding back described base station side on the selected subband of described UE by the cooperation CQI under the CoMP mode of high-level signaling indication, wherein, polymerization CQI among the described cooperation CQI is that the described UE CQI that predetermined sending node TP cooperates is notified in described base station, and the corresponding subband of cooperation CQI under the described CoMP mode is the position of selecting subband by the described UE of the subband label indication of this subband;

Bit corresponding to subband label among the described PUCCH Report Type 1a is used to indicate the corresponding cooperation of polymerization CQI TP combination, and wherein, described TP combination is to be determined according to the Signal to Interference plus Noise Ratio thresholding of base station side configuration by described UE; Bit corresponding to subband CQI in the described PUCCH Report Type 1 is used to indicate described polymerization CQI, and wherein, described polymerization CQI determines in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in described PUCCH Report Type 1, wherein, described subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP;

Bit corresponding to subband label among the described PUCCH Report Type 1a is used to indicate the phasing indication PCI of predetermined TP; Bit corresponding to subband CQI in the described PUCCH Report Type 1 is used to indicate described polymerization CQI, wherein, described polymerization CQI is that the described UE CQI that predetermined TP cooperates is notified in described base station, and described polymerization CQI and described PCI determine in whole subband group transmission according to the transmission of data; When there was subband pre-coding matrix PMI in described PUCCH Report Type 1, wherein, described subband PMI was used to indicate the PMI of the upper transmission of predetermined sub-band group BP.

5. each described method in 4 according to claim 2, it is characterized in that, at described UE according to described signaling, described CSI is carried in the Report Type that comprises subband CSI feeds back to before the described base station, also comprise: described UE receives one of the in the following manner information of indication of described base station:

Indicate described UE to report the definite mode of the cooperation CQI under the described CoMP mode by the predetermined bit of high-level signaling, wherein, described definite mode comprises: the combination of the cooperation TP that described polymerization CQI is corresponding, or the mode of described predetermined interference value;

Determine that described UE selects be used for determining Signal to Interference plus Noise Ratio corresponding to described polymerization CQI greater than default thresholding the time, indicate described UE to report the combination of cooperation TP corresponding to predetermined polymerization CQI and CQI that should be predetermined;

Determine that described UE selects be used for determining Signal to Interference plus Noise Ratio corresponding to described polymerization CQI more than or equal to described default thresholding the time, indicate described UE to report polymerization CQI, subband label and/or subband PMI on the subband that this UE selects;

Determine the combination of the corresponding TP cooperation of described polymerization CQI at Downlink Control Information DCI indicating.

6. according to claim 3 or 4 described methods, it is characterized in that described UE is described based on predetermined CQI and/or the described polymerization CQI that disturbs value to determine by whether including in the report of predetermined bit indication subband in the report that comprises RI.

7. method according to claim 6 is characterized in that, the report of the described RI of comprising comprises: the PUCCH Report Type 1 in described 2 antenna transmission systems and described 4 antenna transmission systems and the PUCCH Report Type 6 in described 8 antenna transmission systems.

8. each described method in 4 according to claim 1 is characterized in that,

Described feedback on reservation pattern comprises: the periodic feedback pattern 2-1 of Long Term Evolution LTE version 10.

9. channel condition information CSI feedback method is characterized in that comprising:

The base station sends to user equipment (UE) and is used to indicate this UE feeds back CSI in the feedback on reservation pattern signaling, wherein, described CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation channel quality information CQI under the coordinate multipoint CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of described high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined;

Described base station receives described UE according to described signaling, and feedback carries the Report Type that comprises subband CSI of described CSI.

10. method according to claim 9 is characterized in that, the base station sends to UE and is used to indicate this UE feeds back CSI in the feedback on reservation pattern signaling and comprises one of following mode:

Described base station indicates described UE to report the definite mode of the cooperation CQI under the described CoMP mode by high-level signaling by predetermined bit, and wherein, described definite mode comprises: the combination of the cooperation TP that described polymerization CQI is corresponding, or the mode of described predetermined interference value;

Described base station determines that UE selects when being used for determining Signal to Interference plus Noise Ratio corresponding to described polymerization CQI greater than default thresholding, indicates described UE to report the combination of cooperation TP corresponding to predetermined polymerization CQI and CQI that should be predetermined;

The combination of the corresponding TP cooperation of described polymerization CQI is determined in described base station at Downlink Control Information DCI indicating, be used to indicate the UE described polymerization CQI of feedback and/or PCI in the predetermined sub-band report, wherein, described predetermined sub-band is reported as subband report after the report subframe that after the subframe of described DCI place first comprise order information RI.

11. according to claim 9 or 10 described methods, it is characterized in that,

Described feedback on reservation pattern comprises: the periodic feedback pattern 2-1 of Long Term Evolution LTE version 10.

12. a channel condition information CSI feedback method is applied to subscriber equipment, it is characterized in that comprising:

Receiver module, be used for receiving this UE feeds back CSI in the feedback on reservation pattern the signaling that is used to indicate of base station transmission, wherein, described CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation channel quality information CQI under the coordinate multipoint CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of described high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined;

Feedback module is used for according to described signaling, described CSI is carried at feed back to described base station in the Report Type that comprises subband CSI.

13. a channel condition information CSI feedback device is characterized in that comprising:

Sending module, be used for being used to indicate this UE in the signaling of feedback on reservation pattern feedback CSI to the user equipment (UE) transmission, wherein, described CSI comprise following one of at least: phasing indication PCI, base station side are by the cooperation channel quality information CQI under the coordinate multipoint CoMP cooperation mode of high-level signaling indication, wherein, the cooperation CQI under the CoMP cooperation mode of described high-level signaling indication comprises CQI and/or the polymerization CQI that disturbs value to determine based on predetermined;

Receiver module is used for receiving described UE according to described signaling, and feedback carries the Report Type that comprises subband CSI of described CSI.

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