CN104009828B

CN104009828B - A kind of channel state information feedback method and equipment

Info

Publication number: CN104009828B
Application number: CN201310060210.5A
Authority: CN
Inventors: 黎超
Original assignee: Huawei Technologies Co Ltd
Current assignee: Honor Device Co Ltd
Priority date: 2013-02-26
Filing date: 2013-02-26
Publication date: 2017-11-17
Anticipated expiration: 2033-02-26
Also published as: CN104009828A

Abstract

Embodiments of the invention provide a kind of channel state information feedback method and equipment, it is related to field of wireless communications systems, solve in multiple input multiple output when the allocating antenna of transmitting node is planar aerial array, the problem of downlink channel condition information can not be fed back to transmitting node by user terminal.This method specifically includes：User terminal UE sends order instruction RI information and precoding type indicates PTI information to transmitting node；Wherein, the allocating antenna of transmitting node includes：Planar array antenna；Sending the precoding on first antenna direction and/or the second antenna direction indicates PMI information and channel quality indicator CQI information to transmitting node；Wherein, first antenna direction and the second antenna direction include but is not limited to：The horizontal direction and vertical direction of planar array antenna.The present invention is applied in feedback of the information.

Description

A kind of channel state information feedback method and equipment

Technical field

The present invention relates to field of wireless communications systems, more particularly to a kind of channel state information feedback method and equipment

Background technology

In multi-aerial radio communication system of new generation, for example, Long Term Evolution (Long Term Evolution, referred to as LTE) system, Multiinputoutput (Multiple Input Multiple Output, abbreviation MIMO) technology are a kind of extensive The technology used.The key of MIMO technology is that multiple antenna transmitter is spatially multiplexed or diversity to multi-aerial receiver Transmitting.Diversity transmission can improve the signal to noise ratio of receiver reception signal, and multiplexing can improve the available spatial parallelism number of plies (number of layer), and then improve the capacity of channel.In diversity with being multiplexed in this two multi-antenna technology, in signal work( Under conditions of rate is enough, it is not necessary further to improve the signal to noise ratio of reception signal.But increase the available number of plies in space It is then more crucial to power system capacity and the raising handled up.Therefore, in LTE system, using the acquisition to multiplexing performance as preferential Optimization direction.

In order to obtain the enough spatial multiplex gains of multiaerial system, it is desirable to obtain accurate descending letter in transmitter side Channel state information (Channel State Information, abbreviation CSI).But downlink channel condition information is typically to connect Receive what pusher side obtained, transmitter side can not directly obtain the CSI information.The CSI information is obtained, a kind of method is to use the time-division The method of the reciprocity of up channel and down channel in duplexing (Time Division Duplex, abbreviation TDD) system obtains , that is, think that the CSI of up channel in system is identical with the CSI of down channel.But now need uplink and downlink chain The radio circuit on road does uniformity calibration, and the CSI and down channel of the up channel in the system complete phases of CSI are fully achieved Together, often it is difficult to be met in engineering.Meanwhile for FDD (Frequency Division Duplex, abbreviation FDD) system, the CSI of down channel and the CSI of up channel are unequal.The reason for being based on these two aspects, channel reciprocity Hypothesis be frequently not optimal option in systems.Therefore, another method that emitter obtains descending CSI is receiver The descending CSI received is fed back into emitter after quantifying by up channel, so as to which emitter feeds back according to these Information does the signal transacting of the spatial reuse of descending multiple antennas and transmitting.This feeding back downlink CSI of the prior art is to hair The method for penetrating machine is confined to the configuration mode of antenna as arrangement in one direction and most 8 antennas of arranging in this direction Configuration mode.

The content of the invention

Embodiments of the invention provide a kind of channel state information feedback method and equipment, solve and receive and dispatch system in multiple antennas In system, when the allocating antenna of transmitting node is planar aerial array, user terminal can not feed back downlink channel condition information The problem of to transmitting node.

To reach above-mentioned purpose, embodiments of the invention adopt the following technical scheme that：

First aspect, there is provided a kind of channel state information feedback method, including：

User terminal UE sends order instruction RI information and precoding type indicates PTI information to transmitting node；Wherein, it is described RI information is used to indicate the parallel channel number that can be supported in information transfer, and the PTI information is used to indicate broad-band channel shape The type of state information, in order to which the transmitting node transmits data；The allocating antenna of the transmitting node includes：Planar array day Line；

Send the precoding instruction PMI information on first antenna direction and/or the second antenna direction and channel quality instruction CQI information is to the transmitting node；Wherein, the first antenna direction and the second antenna direction include but is not limited to：Planar array The horizontal direction and vertical direction of array antenna.

In the first possible implementation, with reference in a first aspect, the PMI information includes：First PMI information and Two PMI informations, the antenna number on the first antenna direction and second antenna direction are all higher than or equal to the number pre-seted Value, the precoding instruction PMI information sent on first antenna direction and/or the second antenna direction and channel quality instruction CQI information to the transmitting node, including：

If the broad-band channel shape in the first antenna direction and second antenna direction at least one antenna direction State information changes, then first PMI information on antenna direction that transmission broad-band channel status information changes is extremely The transmitting node；

Send second PMI information and the width on the broadband on the first antenna direction and second antenna direction The CQI information taken is to the transmitting node.

In second of possible implementation, with reference to the first possible implementation, if the first antenna direction Only have the broad-band channel status information on an antenna direction to change with second antenna direction, described in the transmission CQI letters in second PMI information and broadband on broadband on first antenna direction and second antenna direction After breath to the transmitting node, in addition to：

Each height that the broadband on the antenna direction that broad-band channel status information does not change includes is sent respectively The CQI information on each subband that second PMI information taken and broadband include is to the transmitting node.

In the third possible implementation, with reference in a first aspect, the PMI information includes：First PMI information and Two PMI informations, the antenna number on the first antenna direction and second antenna direction are all higher than or equal to the number pre-seted Value, the precoding instruction PMI information sent on first antenna direction and/or the second antenna direction and channel quality instruction CQI information to the transmitting node, in addition to：

If broad-band channel status information on the first antenna direction and second antenna direction is all without becoming Change, then send second PMI information and the broadband on the broadband on the first antenna direction and second antenna direction On the CQI information to the transmitting node；

Second PMI information on each subband for including of broadband is sent respectively and each subband that broadband includes On the CQI information to the transmitting node.

In the 4th kind of possible implementation, with reference in a first aspect, the PMI information includes：First PMI information and Antenna number in two PMI informations, the first antenna direction and second antenna direction on an antenna direction is less than default The numerical value put, the precoding instruction PMI information sent on first antenna direction and/or the second antenna direction and channel quality CQI information is indicated to the transmitting node, in addition to：

If the broad-band channel status information on the first antenna direction and second antenna direction all changes, First PMI information on the antenna direction that changes of broad-band channel status information is sent to the transmitting node；

Transmission antenna number is on second PMI information on the broadband on the antenna direction of the numerical value of preset value and broadband The CQI information to the transmitting node.

In the 5th kind of possible implementation, with reference in a first aspect, the PMI information includes：First PMI information and Antenna number in two PMI informations, the first antenna direction and second antenna direction on an antenna direction is less than default The numerical value put, the precoding instruction PMI information sent on first antenna direction and/or the second antenna direction and channel quality CQI information is indicated to the transmitting node, in addition to：

If there was only the broad-band channel shape on an antenna direction in the first antenna direction and second antenna direction State information changes, then first PMI information on antenna direction that transmission broad-band channel status information changes is extremely The transmitting node；

Transmission antenna number is that the antenna direction of the numerical value pre-seted and antenna number are less than the numerical value pre-seted and broad-band channel CQI letters in second PMI information and broadband on the broadband on antenna direction that status information does not change Cease to the transmitting node.

In the 6th kind of possible implementation, with reference to the 5th kind of possible implementation, the transmission antenna number is pre- The antenna direction and antenna number of the numerical value of setting do not change less than the numerical value and broad-band channel status information pre-seted After the CQI information to the transmitting node in second PMI information and broadband on broadband on antenna direction, also Including：

Transmission broad-band channel status information does not change respectively and antenna number is the antenna direction of the numerical value pre-seted On each subband for including of broadband on second PMI information and each subband for including of broadband on the CQI Information is to the transmitting node.

In the 7th kind of possible implementation, with reference to the 5th kind of possible implementation, the transmission antenna number is pre- The antenna direction and antenna number of the numerical value of setting do not change less than the numerical value and broad-band channel status information pre-seted After the CQI information to the transmitting node in second PMI information and broadband on broadband on antenna direction, also Including：

The CQI information on each subband for including of broadband is sent respectively to the transmitting node.

In the 8th kind of possible implementation, with reference in a first aspect, the PMI information includes：First PMI information and Antenna number in two PMI informations, the first antenna direction and second antenna direction on an antenna direction is less than default The numerical value put, the precoding instruction PMI information sent on first antenna direction and/or the second antenna direction and channel quality CQI information is indicated to the transmitting node, in addition to：

Transmission antenna number is described on each subband that broadband includes on the antenna direction of the numerical value pre-seted respectively The CQI information on each subband that second PMI information and broadband include is to the transmitting node.

In the 9th kind of possible implementation, with reference in a first aspect, the first antenna direction and second antenna Antenna number on direction is both less than the numerical value pre-seted, it is described send it is pre- on first antenna direction and/or the second antenna direction Coding indicates PMI information and channel quality indicator CQI information to the transmitting node, in addition to：

If the broad-band channel shape in the first antenna direction and second antenna direction at least one antenna direction State information changes, then sends the precoding configured information on the antenna direction that broad-band channel status information changes To the transmitting node；

Send the PMI information on the antenna direction that broad-band channel status information does not change and the institute on broadband CQI information is stated to the transmitting node.

In the tenth kind of possible implementation, with reference in a first aspect, the first antenna direction and second antenna Antenna number on direction is both less than the numerical value pre-seted, it is described send it is pre- on first antenna direction and/or the second antenna direction Coding indicates PMI information and channel quality indicator CQI information to the transmitting node, in addition to：

If broad-band channel status information on the first antenna direction and second antenna direction is all without becoming Change, then send in the PMI information and broadband on the broadband on the first antenna direction and second antenna direction The CQI information is to the transmitting node；

It is described with reference to first aspect or any of the above-described possible implementation in a kind of the tenth possible implementation RI information, the PTI information, the PMI information and the CQI information are carried in a uplink feedback subframe；

Or, the RI information, the PTI information, the PMI information and the CQI information are carried in multiple uplink feedbacks In subframe.

Second aspect, there is provided a kind of information feedback equipment, including：

First transmitting element, order instruction RI information and precoding type instruction PTI information are sent extremely for user terminal UE The transmitting node；Wherein, the RI information is used to indicate the parallel channel number that can be supported in information transfer, the PTI Information is used for the type for indicating broad-band channel status information, in order to which the transmitting node transmits data；The transmitting node Allocating antenna includes：Planar array antenna；

Second transmitting element, for sending the instruction PMI letters of the precoding on first antenna direction and/or the second antenna direction Cease and channel quality indicator CQI information to the transmitting node；Wherein, the first antenna direction and the second antenna direction include But it is not limited to：The horizontal direction and vertical direction of planar array antenna.

In the first possible implementation, with reference to second aspect, the PMI information includes：First PMI information and Two PMI informations, the antenna number on the first antenna direction and second antenna direction are all higher than or equal to the number pre-seted Value, second transmitting element include：

First transmission sub-unit, if at least one antenna in the first antenna direction and second antenna direction Broad-band channel status information on direction changes, then sends on the antenna direction that broad-band channel status information changes First PMI information is to the transmitting node；

First transmission sub-unit, it is additionally operable to send the width on the first antenna direction and second antenna direction The CQI information in second PMI information taken and broadband is to the transmitting node.

In second of possible implementation, with reference to the first possible implementation, the first antenna direction and Only have the broad-band channel status information on an antenna direction to change in second antenna direction, described first sends son Unit is additionally operable to：

In the third possible implementation, with reference in a first aspect, the PMI information includes：First PMI information and Two PMI informations, the antenna number on the first antenna direction and second antenna direction are all higher than or equal to the number pre-seted Value, first transmission sub-unit are additionally operable to：

In the 4th kind of possible implementation, with reference in a first aspect, the PMI information includes：First PMI information and Antenna number in two PMI informations, the first antenna direction and second antenna direction on an antenna direction is less than default The numerical value put, the equipment also include：

Second transmission sub-unit, if the broad-band channel shape on the first antenna direction and second antenna direction State information all changes, then sends first PMI information on the antenna direction that broad-band channel status information changes To the transmitting node；

Second transmission sub-unit, it is additionally operable on the broadband on the antenna direction for the numerical value that transmission antenna number is preset value Second PMI information and broadband on the CQI information to the transmitting node.

In the 5th kind of possible implementation, with reference in a first aspect, the PMI information includes：First PMI information and Antenna number in two PMI informations, the first antenna direction and second antenna direction on an antenna direction is less than default The numerical value put, second transmission sub-unit are additionally operable to：

In the 6th kind of possible implementation, with reference to the 5th kind of possible implementation, second transmission sub-unit It is additionally operable to：

In the 7th kind of possible implementation, with reference to the 5th kind of possible implementation,

Second transmission sub-unit, it is additionally operable to send the CQI information on each subband that broadband includes respectively To the transmitting node.

In the 8th kind of possible implementation, with reference in a first aspect, the PMI information includes：First PMI information and Antenna number in two PMI informations, the first antenna direction and second antenna direction on an antenna direction is less than default The numerical value put, second transmission sub-unit are additionally operable to：

In the 9th kind of possible implementation, with reference in a first aspect, the first antenna direction and second antenna Antenna number on direction is both less than the numerical value pre-seted, and second transmitting element also includes：

3rd transmission sub-unit, if at least one antenna in the first antenna direction and second antenna direction Broad-band channel status information on direction changes, then sends on the antenna direction that broad-band channel status information changes The precoding configured information is to the transmitting node；

3rd transmission sub-unit, it is additionally operable to send on the antenna direction that broad-band channel status information does not change The PMI information and broadband on the CQI information to the transmitting node.

In the tenth kind of possible implementation, with reference in a first aspect, the first antenna direction and second antenna Antenna number on direction is both less than the numerical value pre-seted, and the 3rd transmission sub-unit is additionally operable to：

The channel state information feedback method and equipment that embodiments of the invention provide, by being believed according to broad-band channel state The situation of change of breath and the antenna number of transmitting node, feedback rank indication information, precoding type configured information, precoding instruction Information and channel quality indication (CQI) information are solved in multiple input multiple output, when the antenna part of transmitting node to transmitting node Affix one's name to for planar aerial array when, the problem of downlink channel condition information can not be fed back to transmitting node by user terminal.

Brief description of the drawings

In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with Other accompanying drawings are obtained according to these accompanying drawings.

Fig. 1 is a kind of schematic flow sheet for channel state information feedback method that embodiments of the invention provide；

Fig. 2 is the schematic flow sheet for another channel state information feedback method that embodiments of the invention provide；

Fig. 3 is a kind of schematic flow sheet for channel state information feedback method that another embodiment of the present invention provides；

Fig. 4 is the schematic flow sheet for another channel state information feedback method that another embodiment of the present invention provides；

Fig. 5 is the schematic flow sheet for another channel state information feedback method that embodiments of the invention provide；

Fig. 6 is the schematic flow sheet for another channel state information feedback method that another embodiment of the present invention provides；

Fig. 7 is a kind of schematic flow sheet for channel state information feedback method that another embodiment of the present invention provides；

Fig. 8 is the schematic flow sheet for another channel state information feedback method that another embodiment of the present invention provides；

Fig. 9 is a kind of structural representation for information feedback equipment that embodiments of the invention provide；

Figure 10 is the structural representation for another information feedback equipment that embodiments of the invention provide；

Figure 11 is the structural representation for another the information feedback equipment that embodiments of the invention provide.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made Embodiment, belong to the scope of protection of the invention.

Embodiments of the invention are sent downlink data to multiple antennas UE by eating dishes without rice or wine applied to multi-antenna transmission node.UE Receiver does descending CSI measurement in reference signal, and obtained descending CSI will be measured by up channel by being measured rear UE Feedback of the information is to transmitting node.When the allocating antenna for being mainly used in transmitting node is aerial array, UE feeds back up channel Descending CSI information is sent to transmitting node.

Embodiments of the invention provide a kind of channel state information feedback method, shown in reference picture 1, including：

101st, user terminal UE sends order instruction RI information and precoding type indicates PTI information to transmitting node.

Wherein, RI information is used to indicate the parallel channel number that can be supported in information transfer；PTI information is used to indicate width Type with channel condition information, in order to which transmitting node transmits data；The allocating antenna of transmitting node includes：Planar array day Line.

102nd, UE sends precoding instruction PMI information and the channel matter on first antenna direction and/or the second antenna direction Amount instruction CQI information is to transmitting node.

Wherein, first antenna direction and the second antenna direction include but is not limited to：The horizontal direction of planar array antenna and Vertical direction.

The channel state information feedback method that embodiments of the invention provide, passes through the change according to broad-band channel status information The antenna number of change situation and transmitting node, feedback rank indication information, precoding type configured information, precoding configured information and Channel quality indication (CQI) information is solved in multiple input multiple output, when the allocating antenna of transmitting node is face to transmitting node During shape aerial array, the problem of downlink channel condition information can not be fed back to transmitting node by user terminal.

In each embodiment of the present invention, the broad-band channel status information, which changes, refers to current broad-band channel state The broad-band channel status information that information reports relative to the last time changes.

Embodiments of the invention provide a kind of channel state information feedback method, when first antenna direction and the second antenna side Upward antenna number be all higher than or equal to preset value numerical value when, shown in reference picture 2, this method comprises the following steps：

201st, UE sends order instruction RI information and precoding type indicates PTI information to transmitting node.

Wherein, RI information and precoding type instruction PTI information are carried in the first uplink feedback subframe.

If the broad-band channel status information hair in first antenna direction and the second antenna direction at least one antenna direction Changing, after step 201, perform step 202a~204a；

202a, UE send the first PMI information on the antenna direction that changes of broad-band channel status information to launching section Point.

Wherein, the first PMI information is carried in the second uplink feedback subframe, the day that broad-band channel status information changes Line direction can be first antenna direction or the second antenna direction.

203a, UE are sent on the second PMI information and broadband on the broadband on first antenna direction and the second antenna direction CQI information to transmitting node.

Wherein, the CQI information on the second PMI information and broadband is carried in the 3rd uplink feedback subframe.

Optionally, if there was only the broad-band channel state on an antenna direction in first antenna direction and the second antenna direction Information changes, then also includes after step 203a：

What the broadband that 204a, UE send on the antenna direction that broad-band channel status information does not change respectively included The CQI information on each subband that the second PMI information and broadband on each subband include is to transmitting node.

Wherein, the CQI on each subband that the second PMI information and broadband that broadband includes on each subband include Information is carried in the uplink feedback subframe after the 3rd uplink feedback subframe.

If specifically, there was only the broad-band channel state on an antenna direction in first antenna direction and the second antenna direction Information changes, and step 204 can not also perform.Channel quality indication (CQI) information was the information of whole aerial array by first day Line direction and the second antenna direction together decide on, and the broad-band channel status information on an antenna direction changes, another Broad-band channel status information on individual antenna direction is not changed, and channel quality indication (CQI) information this moment is fed back into transmitting After node, the broad-band channel status information of the antenna of subsequent time is not known whether to change, if broad-band channel shape State information still changes, and that needs again feedback channel quality configured information to transmitting node, therefore obtained channel quality Configured information and less accurate.

If the broad-band channel status information on first antenna direction and the second antenna direction does not all change, reference picture Shown in 3, step 202b~203b is performed after step 201；

202b, UE are sent in the second PMI information and broadband on the broadband on first antenna direction and the second antenna direction CQI information to transmitting node.

Wherein, the second PMI information and CQI information are carried in the first uplink feedback subframe.

203b, UE send the second PMI information on each subband that broadband includes respectively and broadband include it is each CQI information on subband is to transmitting node.

Wherein, the CQI on each subband that the second PMI information and broadband that broadband includes on each subband include Information is carried in the uplink feedback subframe after the second uplink feedback subframe.

Specifically, it can certainly be the launching tower for having transmission-receiving function that transmitting node, which can be base station, first is up anti- Feedback subframe is uplink feedback subframe where first uplink feedback chance that base station is distributed to user equipment, the second uplink feedback Subframe is then the subframe where second uplink feedback chance.Different feedback subframes in time can with adjacent or It is spaced several subframes.

The numerical value pre-seted in an embodiment of the present invention preferably 8.

Specifically, in an embodiment of the present invention, PMI information is used to indicate the codebook information in the aerial array, the same day A use of indicated value is a PMI information (the first PMI information or the second PMI information) when line number is less than the numerical value pre-seted Can indicates the codebook information in the aerial array.One PMI information when antenna number is more than or equal to the numerical value pre-seted The codebook information in the aerial array can not accurately be indicated, it is necessary to using two PMI informations (the first PMI information and second PMI information) codebook information that comes in the joint instructions aerial arrays.Further, when the antenna number on antenna direction is to pre-set Numerical value and the antenna direction on broad-band channel status information when not changing, user terminal needs to feed back broadband Zhong Bao The second PMI information on the subband contained.When a PMI information is not enough to complete codebook information indicator function in the embodiment of the present invention When, it is extended so as to complete instruction using two PMI informations, the signaling structure of each PMI information can be believed with existing PMI Breath is the same.When antenna number is more than the numerical value that pre-sets, for example, set herein 8 when, use the first separated PMI information and second PMI information indicates whole PMI information, and under specific channel condition, can so save user terminal and report PMI to believe Cease the expense of part signaling.

The channel state information feedback method that embodiments of the invention provide, passes through the change according to broad-band channel status information The antenna number of change situation and transmitting node, feedback rank indication information, precoding type configured information, precoding configured information and Channel quality indication (CQI) information is solved in multiple input multiple output, when the allocating antenna of transmitting node is face to transmitting node During shape aerial array, the problem of downlink channel condition information can not be fed back to transmitting node by user terminal.And then, it is possible to reduce Feedback overhead.

Embodiments of the invention provide a kind of channel state information feedback method, first antenna direction and the second antenna direction In antenna number on an antenna direction be less than the numerical value pre-seted, shown in reference picture 4, this method comprises the following steps：

301st, UE sends order instruction RI information and precoding type indicates PTI information to transmitting node.

If the broad-band channel status information on first antenna direction and the second antenna direction all changes, in step 301 Step 302a~303a is performed afterwards；

302a, UE send the first PMI information on the antenna direction that changes of broad-band channel status information to launching section Point.

Wherein, the first PMI information is carried in the first uplink feedback subframe.

303a, UE transmission antenna number are the second PMI information and width on the broadband on the antenna direction of the numerical value pre-seted The CQI information taken is to transmitting node.

Wherein, antenna number is on the second PMI information and the broadband on the broadband on the antenna direction of the numerical value pre-seted CQI information is carried in the second uplink feedback subframe.

If there was only the broad-band channel status information hair on an antenna direction in first antenna direction and the second antenna direction Changing, shown in reference picture 5, step 302b~304b is performed after step 301；

302b, UE send the first PMI information on the antenna direction that changes of broad-band channel status information to launching section Point.

Wherein, the first PMI information on the antenna direction that broad-band channel status information changes carries up second Feed back in subframe.

303b, UE transmission antenna number are that the antenna direction of the numerical value pre-seted and antenna number are less than the numerical value pre-seted and width The second PMI information on the broadband on antenna direction and the CQI information on broadband not changed with channel condition information To transmitting node.

Wherein, antenna number is that the antenna direction of the numerical value pre-seted and antenna number are less than the numerical value pre-seted and broad-band channel The second PMI information on the broadband on antenna direction and the CQI information on broadband that status information does not change carry In 3rd uplink feedback subframe.

Optionally, if the broad-band channel status information that antenna number is less than on the antenna direction of the numerical value pre-seted does not occur Change, then also include after step 303b：

304b1, UE send that broad-band channel status information does not change and antenna number is the numerical value pre-seted respectively The CQI on each subband that the second PMI information and broadband that broadband on antenna direction includes on each subband include Information is to transmitting node.

Wherein, broad-band channel status information does not change and antenna number is on the antenna direction of the numerical value pre-seted The CQI information on each subband that the second PMI information and broadband that broadband includes on each subband include is carried the In uplink feedback subframe after three uplink feedback subframes.

Optionally, if the broad-band channel status information that antenna number is less than on the antenna direction of the numerical value pre-seted becomes Change, then also include after step 303b：

304b2, UE send CQI information on each subband that broadband includes to transmitting node respectively.

Wherein, the CQI information on each subband that broadband includes carries up anti-after the 3rd uplink feedback subframe Present in subframe.

If specifically, there was only the broad-band channel state on an antenna direction in first antenna direction and the second antenna direction Information is changed, and step 304b1 or 304b2 can not also be performed.Reason is no longer superfluous herein as described in above-mentioned embodiment State.

If the broad-band channel status information on first antenna direction and the second antenna direction does not all change, reference picture Shown in 6, step 302c~303c is performed in step 301；

302c, UE are sent in the second PMI information and broadband on the broadband on first antenna direction and the second antenna direction CQI information to transmitting node.

Wherein, the CQI letters in the second PMI information and broadband on the broadband on first antenna direction and the second antenna direction Breath is carried in the second uplink feedback subframe.

Transmission antenna number is on each subband that broadband includes on the antenna direction of the numerical value pre-seted respectively by 303c, UE The second PMI information and each subband for including of broadband on CQI information to transmitting node.

Wherein, antenna number is the 2nd PMI on each subband that broadband includes on the antenna direction of the numerical value pre-seted CQI information on each subband that information and broadband include carries the uplink feedback subframe after the second uplink feedback subframe In.

It should be noted that the specific of part steps is retouched in channel state information feedback method provided in an embodiment of the present invention State, may be referred to corresponding content in above-described embodiment, the embodiment of the present invention will be repeated no longer one by one here.

Embodiments of the invention provide a kind of channel state information feedback method, first antenna direction and the second antenna direction On antenna number be both less than the numerical value that pre-sets, shown in reference picture 7, this method includes：

401st, UE sends order instruction RI information and precoding type indicates PTI information to transmitting node.

If the broad-band channel status information hair in first antenna direction and the second antenna direction at least one antenna direction Changing, then step 402a~403a is performed after step 401；

The precoding configured information that 402a, UE are sent on the antenna direction that broad-band channel status information changes extremely is launched Node.

Wherein, the precoding configured information on the antenna direction that broad-band channel status information changes is carried on second In row feedback subframe.

403a, UE are sent on PMI information and broadband on the antenna direction that broad-band channel status information does not change CQI information to transmitting node.

Wherein, the PMI information on antenna direction and the CQI letters on broadband that broad-band channel status information does not change Breath is carried in the 3rd uplink feedback subframe.

If the broad-band channel status information on first antenna direction and the second antenna direction does not all change, reference picture Shown in 8, after step 401, step 402b~403b is performed；

402b, UE send the CQI in PMI information and broadband on the broadband on first antenna direction and the second antenna direction Information is to transmitting node.

Wherein, the CQI information in the PMI information and broadband on the broadband on first antenna direction and the second antenna direction is taken Band is in the second uplink feedback subframe.

403b, UE send CQI information on each subband that broadband includes to transmitting node respectively.

Wherein, the CQI information on each subband that broadband includes carries up anti-after the second uplink feedback subframe Present in subframe.

Selected specifically, the subband in above-described embodiment is UE from broadband according to the needs of oneself from whole broadband Optimal sub-band indicates reported on which subband by network by signaling, so as to select corresponding subband.

The channel condition information in first antenna direction and the second antenna direction in above-described embodiment independently changes, and Suitable for the feedback system of periodic feedback.Specifically, periodic feedback uses Physical Uplink Control Channel (Physical Uplink Control Channel, abbreviation PUCCH) because PUCCH channels can be with feedack finite capacity, therefore wrap CSI information containing RI, PTI, PMI and CQI needs carrying in different uplink feedback subframes.

When the channel condition information of first antenna direction and the second antenna direction changes simultaneously, UE feeds back to transmitting node The method of channel condition information is the same as the broad-band channel status information in such scheme on first antenna direction and the second antenna direction It is identical that step is performed corresponding to the embodiment for all changing or not changing.

When feedback system is non-periodic feedback, feedback system that UE requires according to base station, by first antenna direction and The CSI information of the feedback needed on two antenna directions once feeds back to base station in a uplink feedback subframe, it is not necessary to point It is multiple to feed back chances or cycle to feed back.Specifically, non-periodic feedback mode uses (Physical Uplink Shared Channel, abbreviation PUSCH), the information content that the PUSCH channels can transmit is larger, therefore includes RI, PTI, PMI and CQI CSI information can be being carried in a uplink feedback subframe.

What is used in above-described embodiment is the scheme with variable PTI one code books of joint instructions of two 1 bits, certainly It is not limited to this manner it is also possible to be to carry out two antenna directions of joint instructions using the variable PTI of 2 bits.Make in the present invention Code book be not limited to code book defined in Long Term Evolution (Long Term Evolution, abbreviation LTE) system or The code book or user-defined code book used in other systems.

The channel state information feedback method provided using the above embodiment of the present invention, can be multiplexed existing deposited Code book in systems, thus the necessity for needing that more complicated code book is designed for array antenna system can be reduced, further may be used To increase backwards compatibility of the system after array antenna is disposed.

Embodiments of the invention provide a kind of information feedback equipment 5, shown in reference picture 9, including：First sends The transmitting element 52 of unit 51 and second, wherein：

First transmitting element 51, order instruction RI information and precoding type instruction PTI information are sent for user terminal UE To transmitting node.

Wherein, RI information is used to indicate the parallel channel number that can be supported in information transfer, and PTI information is used to indicate width Type with channel condition information, in order to which transmitting node transmits data；The allocating antenna of transmitting node includes：Planar array day Line.

Second transmitting element 52, for sending the instruction of the precoding on first antenna direction and/or the second antenna direction PMI Information and channel quality indicator CQI information are to transmitting node；Wherein, first antenna direction and the second antenna direction include but unlimited In：The horizontal direction and vertical direction of planar array antenna.

The information feedback equipment that embodiments of the invention provide, passes through the change according to broad-band channel status information The antenna number of change situation and transmitting node, feedback rank indication information, precoding type configured information, precoding configured information and Channel quality indication (CQI) information is solved in multiple input multiple output, when the allocating antenna of transmitting node is face to transmitting node During shape aerial array, the problem of downlink channel condition information can not be fed back to transmitting node by user terminal.

Further, shown in reference picture 10, the second hair of the information feedback equipment 5 that embodiments of the invention provide Unit 52 is sent also to include：First transmission sub-unit 521, the second transmission sub-unit 522 and the 3rd transmission sub-unit 523, wherein：

Antenna number on first antenna direction and the second antenna direction is all higher than or equal to the numerical value pre-seted, then first sent out Subelement 521 is sent to be used for：

If the broad-band channel status information hair in first antenna direction and the second antenna direction at least one antenna direction Changing, then first PMI information on antenna direction that transmission broad-band channel status information changes to transmitting node.

Send the second PMI information on the broadband on first antenna direction and the second antenna direction and the CQI letters on broadband Cease to transmitting node.

If there was only the broad-band channel status information hair on an antenna direction in first antenna direction and the second antenna direction Changing, then the first transmission sub-unit be additionally operable to：

Each height that the broadband on the antenna direction that broad-band channel status information does not change includes is sent respectively The CQI information on each subband that the second PMI information taken and broadband include is to transmitting node.

Optionally, the antenna number on first antenna direction and the second antenna direction is all higher than or equal to the numerical value pre-seted, First transmission sub-unit is additionally operable to：

If the broad-band channel status information on first antenna direction and the second antenna direction does not all change, send The CQI information in the second PMI information and broadband on broadband on first antenna direction and the second antenna direction is to transmitting node.

Send the second PMI information on each subband for including of broadband respectively and each subband that broadband includes on CQI information is to transmitting node.

Optionally, PMI information includes：First PMI information and the second PMI information, first antenna direction and the second antenna side Antenna number on an antenna direction is less than the numerical value pre-seted, and second transmitting element 52 also includes：Second sends son Unit 522；

Second transmission sub-unit 522, if the broad-band channel state letter on first antenna direction and the second antenna direction Breath all changes, then the first PMI information on antenna direction that transmission broad-band channel status information changes to the hair Penetrate node.

Second transmission sub-unit 522, it is additionally operable on the broadband on the antenna direction for the numerical value that transmission antenna number is preset value The second PMI information and broadband on CQI information to transmitting node.

Optionally, PMI information includes：First PMI information and the second PMI information, first antenna direction and the second antenna side Antenna number on an antenna direction is less than the numerical value pre-seted, and the second transmission sub-unit 522 is additionally operable to：

If there was only the broad-band channel status information hair on an antenna direction in first antenna direction and the second antenna direction Changing, then the first PMI information on antenna direction that transmission broad-band channel status information changes to transmitting node.

Transmission antenna number is that the antenna direction of the numerical value pre-seted and antenna number are less than the numerical value pre-seted and broad-band channel The second PMI information on the broadband on antenna direction and the CQI information on broadband that status information does not change extremely are launched Node.

Further alternative, the second transmission sub-unit 522 is additionally operable to send broad-band channel status information respectively and not occurred Change and antenna number be the second PMI information on each subband that the broadband on the antenna direction of the numerical value pre-seted includes and The CQI information on each subband that broadband includes is to transmitting node.

It is further alternative, the second transmission sub-unit 522, it is additionally operable to send respectively on each subband that broadband includes CQI information is to transmitting node.

Optionally, PMI information includes：First PMI information and the second PMI information, first antenna direction and the second antenna side Antenna number on an antenna direction is less than the numerical value pre-seted, and the second transmission sub-unit 5222 is additionally operable to：

Transmission antenna number is second on each subband that broadband includes on the antenna direction of the numerical value pre-seted respectively The CQI information on each subband that PMI information and broadband include is to transmitting node.

Optionally, the antenna number on first antenna direction and the second antenna direction is both less than the numerical value pre-seted, the second hair Unit 52 is sent also to include：3rd transmission sub-unit 523, wherein：

3rd transmission sub-unit 523, if at least one antenna direction in first antenna direction and the second antenna direction On broad-band channel status information change, then send prelisting on the antenna direction that changes of broad-band channel status information Code configured information is to transmitting node.

3rd transmission sub-unit 523, it is additionally operable to send on the antenna direction that broad-band channel status information does not change PMI information and broadband on CQI information to transmitting node.

Optionally, the antenna number on first antenna direction and the second antenna direction is both less than the numerical value pre-seted, the 3rd hair Subelement 523 is sent to be additionally operable to：

If the broad-band channel status information on first antenna direction and the second antenna direction does not all change, send The CQI information in the PMI information and broadband on broadband on first antenna direction and the second antenna direction is to transmitting node.

CQI information on each subband for including of broadband is sent respectively to transmitting node.

Wherein, RI information, PTI information, PMI information and CQI information are carried in a uplink feedback subframe.

Or, RI information, PTI information, PMI information and CQI information are carried in multiple uplink feedback subframes.

The information feedback equipment that embodiments of the invention provide, passes through the change according to broad-band channel status information The antenna number of change situation and transmitting node, feedback rank indication information, precoding type configured information, precoding configured information and Channel quality indication (CQI) information is solved in multiple input multiple output, when the allocating antenna of transmitting node is face to transmitting node During shape aerial array, the problem of downlink channel condition information can not be fed back to transmitting node by user terminal.And then, it is possible to reduce Feedback overhead.

The channel condition information in first antenna direction and the second antenna direction in above-described embodiment independently changes, and Suitable for the feedback system of periodic feedback.When simultaneously the channel condition information of first antenna direction and the second antenna direction changes When, method from UE to transmitting node feeding back channel state information with such scheme on first antenna direction and the second antenna direction The broad-band channel status information embodiment that all changes or do not change corresponding to perform step identical.

When feedback system is non-periodic feedback, feedback system that UE requires according to base station, by first antenna direction and The CSI information of the feedback needed on two antenna directions once feeds back to base station in a uplink feedback subframe, it is not necessary to point It is multiple to feed back chances or cycle to feed back.

The information feedback equipment provided using the above embodiment of the present invention, can be multiplexed existing deposited Code book in systems, thus the necessity for needing that more complicated code book is designed for array antenna system can be reduced, further may be used To increase backwards compatibility of the system after array antenna is disposed.

Embodiments of the invention provide a kind of information feedback equipment 6, shown in reference picture 11, including：At least one Individual processor 61, memory 62, communication interface 63 and bus 64, at least one processor 61, memory 62 and the communication interface 63 are connected by bus 64 and complete mutual communication.

The bus 64 can be that industry standard architecture (Industry StandardArchitecture, is referred to as ISA) bus, external equipment interconnection (Peripheral Component, referred to as PCI) bus or extension Industry Standard Architecture knot Structure (Extended Industry Standard Architecture, referred to as EISA) bus etc..The bus 64 can be divided into Address bus, data/address bus, controlling bus etc..For ease of representing, only represented in Figure 11 with a thick line, it is not intended that only A piece bus or a type of bus.Wherein：

Memory 62 is used to store executable program code, and the program code includes computer-managed instruction.Memory 62 High-speed RAM memory may be included, it is also possible to also including nonvolatile memory (non-volatile memory), such as extremely A few magnetic disk storage.

Processor 61 is probably a central processing unit (Central Processing Unit, referred to as CPU), or Specific integrated circuit (Application Specific Integrated Circuit, referred to as ASIC), or by with It is set to the one or more integrated circuits for implementing the embodiment of the present invention.

Communication interface 63, it is mainly used in realizing the communication between the device in the present embodiment.

Processor 61, it is additionally operable to call the program code in memory 62, to perform following operation：

User terminal UE sends order instruction RI information and precoding type indicates PTI information to transmitting node.

Send the precoding instruction PMI information on first antenna direction and/or the second antenna direction and channel quality instruction CQI information is to transmitting node；Wherein, first antenna direction and the second antenna direction include but is not limited to：Planar array antenna Horizontal direction and vertical direction.

Further, the antenna number on first antenna direction and the second antenna direction is all higher than or equal to the numerical value pre-seted, Processor 61, is additionally operable to：

If there was only the broad-band channel status information hair on an antenna direction in first antenna direction and the second antenna direction Changing, then processor 61 be additionally operable to：

Optionally, the antenna number on first antenna direction and the second antenna direction is all higher than or equal to the numerical value pre-seted, Then processor 61 is additionally operable to：

Optionally, PMI information includes：First PMI information and the second PMI information, first antenna direction and the second antenna side Antenna number on an antenna direction is less than the numerical value pre-seted, and processor 61 is additionally operable to：

If the broad-band channel status information on first antenna direction and the second antenna direction all changes, broadband is sent The first PMI information on the antenna direction that channel condition information changes is to the transmitting node.

Transmission antenna number is on the second PMI information on the broadband on the antenna direction of the numerical value of preset value and broadband CQI information is to transmitting node.

It is further alternative, processor 61, it is additionally operable to send broad-band channel status information respectively and does not change and day Line number is the second PMI information and broadband Zhong Bao on each subband that the broadband on the antenna direction of the numerical value pre-seted includes The CQI information on each subband included is to transmitting node.

It is further alternative, processor 61, it is additionally operable to send CQI information on each subband that broadband includes respectively extremely Transmitting node.

Optionally, the antenna number on first antenna direction and the second antenna direction is both less than the numerical value pre-seted, processor 61 are additionally operable to：

If the broad-band channel status information hair in first antenna direction and the second antenna direction at least one antenna direction Changing, then the precoding configured information on antenna direction that transmission broad-band channel status information changes to transmitting node.

Send the PMI information on the antenna direction that broad-band channel status information does not change and the CQI letters on broadband Cease to transmitting node.

One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through Programmed instruction related hardware is completed, and foregoing program can be stored in a computer read/write memory medium, the program Upon execution, the step of execution includes above method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or light Disk etc. is various can be with the medium of store program codes.

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

Claims

A kind of 1. channel state information feedback method, it is characterised in that including：

User terminal UE sends order instruction RI information and precoding type indicates PTI information to transmitting node；Wherein, the RI letters The parallel channel number for indicating to support in information transfer is ceased, the PTI information is used to indicate that broad-band channel state is believed The type of breath, in order to which the transmitting node transmits data；The allocating antenna of the transmitting node includes：Planar array antenna；

Send the precoding instruction PMI information and channel quality indicator (CQI) letter on first antenna direction and/or the second antenna direction Cease to the transmitting node；Wherein, the first antenna direction and the second antenna direction include but is not limited to：Planar array antenna Horizontal direction and vertical direction.
2. according to the method for claim 1, it is characterised in that the PMI information includes：First PMI information and the 2nd PMI Information, the antenna number on the first antenna direction and second antenna direction are all higher than or equal to the numerical value pre-seted, institute State precoding instruction PMI information and the channel quality indicator CQI information sent on first antenna direction and/or the second antenna direction To the transmitting node, including：

If the broad-band channel state letter in the first antenna direction and second antenna direction at least one antenna direction Breath changes, then sends first PMI information on the antenna direction that changes of broad-band channel status information to described Transmitting node；

Send on second PMI information and the broadband on the broadband on the first antenna direction and second antenna direction The CQI information to the transmitting node.
3. according to the method for claim 2, it is characterised in that if the first antenna direction and second antenna direction In broad-band channel status information only on an antenna direction change, the first antenna direction and described of sending The CQI information in second PMI information and broadband on broadband on second antenna direction to the transmitting node it Afterwards, in addition to：

Send respectively on each subband that the broadband on the antenna direction that broad-band channel status information does not change includes Second PMI information and each subband for including of broadband on the CQI information to the transmitting node.
4. according to the method for claim 1, it is characterised in that the PMI information includes：First PMI information and the 2nd PMI Information, the antenna number on the first antenna direction and second antenna direction are all higher than or equal to the numerical value pre-seted, institute State precoding instruction PMI information and the channel quality indicator CQI information sent on first antenna direction and/or the second antenna direction To the transmitting node, in addition to：

If the broad-band channel status information on the first antenna direction and second antenna direction does not all change, Send the institute on second PMI information and the broadband on the broadband on the first antenna direction and second antenna direction CQI information is stated to the transmitting node；

Send second PMI information on each subband for including of broadband respectively and each subband that broadband includes on The CQI information is to the transmitting node.
5. according to the method for claim 1, it is characterised in that the PMI information includes：First PMI information and the 2nd PMI Antenna number in information, the first antenna direction and second antenna direction on an antenna direction is less than the number pre-seted Value, the precoding instruction PMI information sent on first antenna direction and/or the second antenna direction and channel quality instruction CQI information to the transmitting node, in addition to：

If the broad-band channel status information on the first antenna direction and second antenna direction all changes, send First PMI information on the antenna direction that broad-band channel status information changes is to the transmitting node；

Transmission antenna number is second PMI information on the broadband on the antenna direction of the numerical value of preset value and the institute on broadband CQI information is stated to the transmitting node.
6. according to the method for claim 1, it is characterised in that the PMI information includes：First PMI information and the 2nd PMI Antenna number in information, the first antenna direction and second antenna direction on an antenna direction is less than the number pre-seted Value, the precoding instruction PMI information sent on first antenna direction and/or the second antenna direction and channel quality instruction CQI information to the transmitting node, in addition to：

If there was only the broad-band channel state letter on an antenna direction in the first antenna direction and second antenna direction Breath changes, then sends first PMI information on the antenna direction that changes of broad-band channel status information to described Transmitting node；

Transmission antenna number is that the antenna direction of the numerical value pre-seted and antenna number are less than the numerical value pre-seted and broad-band channel state The CQI information in second PMI information and broadband on the broadband on antenna direction that information does not change is extremely The transmitting node.
7. according to the method for claim 6, it is characterised in that the transmission antenna number is the antenna side of the numerical value pre-seted To on the broadband on the antenna direction not changed less than the numerical value and broad-band channel status information pre-seted with antenna number Second PMI information and broadband on the CQI information to the transmitting node after, in addition to：

Transmission broad-band channel status information does not change respectively and antenna number is on the antenna direction of the numerical value pre-seted The CQI information on each subband that second PMI information and broadband on each subband that broadband includes include To the transmitting node.
8. according to the method for claim 6, it is characterised in that the transmission antenna number is the antenna side of the numerical value pre-seted To on the broadband on the antenna direction not changed less than the numerical value and broad-band channel status information pre-seted with antenna number Second PMI information and broadband on the CQI information to the transmitting node after, in addition to：

The CQI information on each subband for including of broadband is sent respectively to the transmitting node.
9. according to the method for claim 1, it is characterised in that the PMI information includes：First PMI information and the 2nd PMI Antenna number in information, the first antenna direction and second antenna direction on an antenna direction is less than the number pre-seted Value, the precoding instruction PMI information sent on first antenna direction and/or the second antenna direction and channel quality instruction CQI information to the transmitting node, in addition to：

If the broad-band channel status information on the first antenna direction and second antenna direction does not all change, Send the institute on second PMI information and the broadband on the broadband on the first antenna direction and second antenna direction CQI information is stated to the transmitting node；

Transmission antenna number is described second on each subband that broadband includes on the antenna direction of the numerical value pre-seted respectively The CQI information on each subband that PMI information and broadband include is to the transmitting node.
10. according to the method for claim 1, it is characterised in that the first antenna direction and second antenna direction On antenna number be both less than the numerical value that pre-sets, the precoding sent on first antenna direction and/or the second antenna direction PMI information and channel quality indicator CQI information are indicated to the transmitting node, in addition to：

If the broad-band channel state letter in the first antenna direction and second antenna direction at least one antenna direction Breath changes, then the precoding configured information on antenna direction that transmission broad-band channel status information changes to institute State transmitting node；

Send described on the PMI information and the broadband on the antenna direction that broad-band channel status information does not change CQI information is to the transmitting node.
11. according to the method for claim 1, it is characterised in that the first antenna direction and second antenna direction On antenna number be both less than the numerical value that pre-sets, the precoding sent on first antenna direction and/or the second antenna direction PMI information and channel quality indicator CQI information are indicated to the transmitting node, in addition to：

If the broad-band channel status information on the first antenna direction and second antenna direction does not all change, Send described in the PMI information and broadband on the broadband on the first antenna direction and second antenna direction CQI information is to the transmitting node；

The CQI information on each subband for including of broadband is sent respectively to the transmitting node.
12. according to the method described in any one of claim 1~11, it is characterised in that

The RI information, the PTI information, the PMI information and the CQI information are carried in a uplink feedback subframe；

Or, the RI information, the PTI information, the PMI information and the CQI information are carried in multiple uplink feedback subframes In.
A kind of 13. information feedback equipment, it is characterised in that including：

First transmitting element, order instruction RI information and precoding type instruction PTI information are sent to transmitting for user terminal UE Node；Wherein, the RI information is used to indicate the parallel channel number that can be supported in information transfer, and the PTI information is used for The type of broad-band channel status information is indicated, in order to which the transmitting node transmits data；The allocating antenna of the transmitting node Including：Planar array antenna；

Second transmitting element, for send the precoding on first antenna direction and/or the second antenna direction instruction PMI information and Channel quality indicator CQI information is to the transmitting node；Wherein, the first antenna direction and the second antenna direction are included but not It is limited to：The horizontal direction and vertical direction of planar array antenna.
14. equipment according to claim 13, it is characterised in that the PMI information includes：First PMI information and second PMI information, the antenna number on the first antenna direction and second antenna direction are all higher than or equal to the numerical value pre-seted, Second transmitting element includes：

First transmission sub-unit, if at least one antenna direction in the first antenna direction and second antenna direction On broad-band channel status information change, then send described on the antenna direction that changes of broad-band channel status information First PMI information is to the transmitting node；

First transmission sub-unit, it is additionally operable to send on the broadband on the first antenna direction and second antenna direction Second PMI information and broadband on the CQI information to the transmitting node.
15. equipment according to claim 14, it is characterised in that the first antenna direction and second antenna direction In broad-band channel status information only on an antenna direction change, first transmission sub-unit is additionally operable to：

Send respectively on each subband that the broadband on the antenna direction that broad-band channel status information does not change includes Second PMI information and each subband for including of broadband on the CQI information to the transmitting node.
16. equipment according to claim 13, it is characterised in that the PMI information includes：First PMI information and second PMI information, the antenna number on the first antenna direction and second antenna direction are all higher than or equal to the numerical value pre-seted, First transmission sub-unit is additionally operable to：

If the broad-band channel status information on the first antenna direction and second antenna direction does not all change, Send the institute on second PMI information and the broadband on the broadband on the first antenna direction and second antenna direction CQI information is stated to the transmitting node；

Send second PMI information on each subband for including of broadband respectively and each subband that broadband includes on The CQI information is to the transmitting node.
17. equipment according to claim 13, it is characterised in that the PMI information includes：First PMI information and second Antenna number in PMI information, the first antenna direction and second antenna direction on an antenna direction, which is less than, to be pre-seted Numerical value, second transmitting element also includes：

Second transmission sub-unit, if the broad-band channel state letter on the first antenna direction and second antenna direction Breath all changes, then first PMI information on antenna direction that transmission broad-band channel status information changes to institute State transmitting node；

Second transmission sub-unit, transmission antenna number is additionally operable to as the institute on the broadband on the antenna direction of the numerical value of preset value The CQI information on the second PMI information and broadband is stated to the transmitting node.
18. equipment according to claim 13, it is characterised in that the PMI information includes：First PMI information and second Antenna number in PMI information, the first antenna direction and second antenna direction on an antenna direction, which is less than, to be pre-seted Numerical value, second transmission sub-unit is additionally operable to：

If there was only the broad-band channel state letter on an antenna direction in the first antenna direction and second antenna direction Breath changes, then sends first PMI information on the antenna direction that changes of broad-band channel status information to described Transmitting node；

Transmission antenna number is that the antenna direction of the numerical value pre-seted and antenna number are less than the numerical value pre-seted and broad-band channel state The CQI information in second PMI information and broadband on the broadband on antenna direction that information does not change is extremely The transmitting node.
19. equipment according to claim 18, it is characterised in that second transmission sub-unit is additionally operable to：

Transmission broad-band channel status information does not change respectively and antenna number is on the antenna direction of the numerical value pre-seted The CQI information on each subband that second PMI information and broadband on each subband that broadband includes include To the transmitting node.
20. equipment according to claim 18, it is characterised in that

Second transmission sub-unit, it is additionally operable to send the CQI information on each subband that broadband includes respectively to institute State transmitting node.
21. equipment according to claim 13, it is characterised in that the PMI information includes：First PMI information and second Antenna number in PMI information, the first antenna direction and second antenna direction on an antenna direction, which is less than, to be pre-seted Numerical value, second transmission sub-unit is additionally operable to：

If the broad-band channel status information on the first antenna direction and second antenna direction does not all change, Send the institute on second PMI information and the broadband on the broadband on the first antenna direction and second antenna direction CQI information is stated to the transmitting node；

Transmission antenna number is described second on each subband that broadband includes on the antenna direction of the numerical value pre-seted respectively The CQI information on each subband that PMI information and broadband include is to the transmitting node.
22. equipment according to claim 13, it is characterised in that the first antenna direction and second antenna direction On antenna number be both less than the numerical value that pre-sets, second transmitting element also includes：

3rd transmission sub-unit, if at least one antenna direction in the first antenna direction and second antenna direction On broad-band channel status information change, then send described on the antenna direction that changes of broad-band channel status information Precoding configured information is to the transmitting node；

3rd transmission sub-unit, it is additionally operable to send the institute on the antenna direction that broad-band channel status information does not change The CQI information on PMI information and broadband is stated to the transmitting node.
23. equipment according to claim 13, it is characterised in that the first antenna direction and second antenna direction On antenna number be both less than the numerical value that pre-sets, the 3rd transmission sub-unit is additionally operable to：

If the broad-band channel status information on the first antenna direction and second antenna direction does not all change, Send described in the PMI information and broadband on the broadband on the first antenna direction and second antenna direction CQI information is to the transmitting node；

The CQI information on each subband for including of broadband is sent respectively to the transmitting node.
24. according to the equipment described in any one of claim 13~23, it is characterised in that

The RI information, the PTI information, the PMI information and the CQI information are carried in a uplink feedback subframe；

Or, the RI information, the PTI information, the PMI information and the CQI information are carried in multiple uplink feedback subframes In.