CN102916785B - Information feedback method, user equipment and base station - Google Patents
Information feedback method, user equipment and base station Download PDFInfo
- Publication number
- CN102916785B CN102916785B CN201110361974.9A CN201110361974A CN102916785B CN 102916785 B CN102916785 B CN 102916785B CN 201110361974 A CN201110361974 A CN 201110361974A CN 102916785 B CN102916785 B CN 102916785B
- Authority
- CN
- China
- Prior art keywords
- pdcch
- feedback
- csi
- subframe
- base station
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/0031—Multiple signaling transmission
Landscapes
- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The embodiment of the invention discloses an information feedback method, user equipment and a base station. The method comprises the following steps of: receiving a control signaling sent by the base station, wherein the control signaling carries feedback indication information of an expanded physical downlink control channel (E-PDCCH); and feeding back channel state information (CSI) of the E-PDCCH to the base station on a corresponding subframe according to the feedback indication information. The user equipment comprises a first receiving module and a feedback module. The base station comprises a sending module and a second receiving module. According to the embodiment of the invention, the performance of the E-PDCCH be improved.
Description
Technical field
The present embodiments relate to communication technology, more particularly to a kind of information feedback method, user equipment and base station.
Background technology
In a wireless communication system, (Multiple-input and are received link adaptation techniques and multi-emitting more
Multiple-output；Hereinafter referred to as：MIMO) technology can be obviously improved the data throughout of system.Link adaptation techniques root
(Channel Quality Indicator are indicated according to the channel quality that receiving terminal feeds back；Hereinafter referred to as：CQI) dynamic adjustment is adjusted
Mode processed and code rate so that system increases message transmission rate on the premise of certain detection performance is met；Mimo system
Multiple antennas are adopted in transmitting-receiving two-end compared to traditional a single aerial system.Mimo system sends multiple by space multiplexing technique
Lifting message transmission rate, the number of independent data flow is referred to as order (rank) to independent data flow.Long Term Evolution (Long
Term Evolution；Hereinafter referred to as：LTE) system defines transmission mode based on Closed-Loop Spatial Multiplexing come lift system
Performance, Closed-Loop Spatial Multiplexing employ the precoding technique based on code book, that is, be pre-designed one and prelist comprising all possible
The code book of code matrix, pre-coding matrix can be indexed indicate with the one of code book, referred to as pre-coding matrix instruction
(Precoding Matrix Indicator；Hereinafter referred to as：PMI).User equipment (User Equipment；Hereinafter referred to as：
UE descending mimo channel is estimated based on downlink reference signal), and based on the channel estimation determine optimum order, pre-coding matrix and
Channel quality information, and distinguished corresponding order instruction (Rank Indicator；Hereinafter referred to as：RI), PMI and CQI feedback
To base station, the feedback of RI, PMI and CQI is referred to as CSI feedback.The specific feedback contents of UE depend on transmission mode, such as PMI
Feedback is needed only under closed loop transmission pattern.UE may need to feed back PMI when CQI is fed back simultaneously, be designated as CQI/PMI.
In LTE system, base station is also needed to by Downlink Control Information (Downlink ControlInformation；With
Lower abbreviation：DCI information necessary to UE reception signals, such as frequency resource and modulation coding mode of distribution etc. are dispatched to inform)
Information, DCI is generally in Physical Downlink Control Channel (Physical Downlink Control Channel；Hereinafter referred to as：
PDCCH transmit on).In the following evolution of LTE-Advanced, in order to further improve systematic function, the DCI of transmission is needed
Expense further can increase.Therefore, because the restriction of the resource of existing PDCCH, transmission means and modulation system, its capacity
The requirement in future may not be met, so as to the data throughout of system for restricting.The solution of the raising PDCCH capacity that presently, there are
Scheme is the available resources of extension PDCCH, transmission means and modulation system, that is, divides in the resource of traditional transmission data
It is used to send DCI, the Physical Downlink Control Channel (Extended that newly assigned this part resource referred to as extends with part resource
Physical Downlink Control Channel；Hereinafter referred to as：E-PDCCH).Compared with traditional PDCCH, E-PDCCH
Can be using based on demodulated reference signal (Demodulation Reference Signals；Hereinafter referred to as：Prelisting DM-RS)
Code technology, it would however also be possible to employ the modulation system of higher order and the rank of increase transmission, further to improve capacity.
However, the CSI feedback of E-PDCCH is not existed in prior art, cause the hydraulic performance decline of E-PDCCH.
The content of the invention
The embodiment of the present invention is to provide a kind of information feedback method, user equipment and base station, improves the property of E-PDCCH
Energy.
To achieve these goals, a kind of information feedback method is embodiments provided, including：
The control signaling that base station issues is received, the Physical Downlink Control Channel E- for extension in the control signaling, is carried
The feedback configured information of PDCCH；
The channel of the E-PDCCH is directed in corresponding subframe according to the feedback configured information to the base station feedback
Status information CSI.
A kind of information feedback method is embodiments provided, including：
Send control signaling to user equipment, in the control signaling, carry the Physical Downlink Control Channel E- for extension
The feedback configured information of PDCCH；
Receive the user equipment according to it is described feedback configured information feed back in corresponding subframe for the E-
The channel condition information CSI of PDCCH.
A kind of user equipment is embodiments provided, including：
First receiver module, for receiving the control signaling that base station issues, carries for extension in the control signaling
The feedback configured information of Physical Downlink Control Channel E-PDCCH；
Feedback module, it is described for being directed to the base station feedback in corresponding subframe according to the feedback configured information
The channel condition information CSI of E-PDCCH.
A kind of base station is embodiments provided, including：
Sending module, for sending control signaling to user equipment, carries the physics for extension in the control signaling
The feedback configured information of down control channel E-PDCCH；
Second receiver module, it is anti-in corresponding subframe according to the feedback configured information for receiving the user equipment
The channel condition information CSI for the E-PDCCH of feedback.
A kind of information feedback method provided in an embodiment of the present invention, user equipment and base station, receive base station by UE and issue
Control signaling, from control signaling obtain for E-PDCCH feedback configured information, according to the feedback configured information corresponding
Subframe on to base station feedback for E-PDCCH CSI；This embodiment introduces for the CSI feedback of E-PDCCH, so as to carry
The high rank adaptation performance of E-PDCCH, prelist code performance and link circuit self-adapting performance.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
Accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are these
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the flow chart of information feedback method embodiment of the present invention；
Fig. 2 is the flow chart of information feedback method embodiment of the present invention two；
Fig. 3 is the flow chart of information feedback method embodiment of the present invention three；
Fig. 4 is the flow chart of information feedback method example IV of the present invention；
Fig. 5 is the flow chart of information feedback method embodiment of the present invention five；
Fig. 6 is the structure chart of user equipment embodiment of the present invention；
Fig. 7 is the structure chart of user equipment embodiment of the present invention two；
Fig. 8 is the structure chart of base station embodiment of the present invention；
Fig. 9 is the structure chart of base station embodiment of the present invention two；.
Specific embodiment
To make purpose, technical scheme and the advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
The a part of embodiment of the present invention, rather than the embodiment of whole.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is the flow chart of information feedback method embodiment of the present invention, as shown in figure 1, present embodiments providing one kind
Information feedback method, this enforcement illustrate technical scheme from UE sides, can specifically include following steps：
Step 101, receives the control signaling that base station issues, and the physical down control for extension is carried in the control signaling
The feedback configured information of channel E-PDCCH processed.
In LTE-Advanced systems, UE can be directed to the CSI of E-PDCCH to base station feedback, and UE is first received from base
The control signaling that station issues, carries the feedback configured information for E-PDCCH in the control signaling.UE can adopt periodicity side
Formula feeds back CSI, it would however also be possible to employ aperiodicity mode feeds back CSI, and the control signaling for specifically being issued by base station is determining.When UE is adopted
When feeding back CSI with periodic manner, base station is handed down to the control signaling of UE and is specially wireless heterogeneous networks (Radio Resource
Control；Hereinafter referred to as：RRC) signaling, base station need the feedback configured information for E-PDCCH is carried in the RRC signaling,
The feedback configured information for E-PDCCH carried in RRC signaling is the periodic quantity of the CSI feedback for E-PDCCH and skew
Value, or, the feedback configured information for E-PDCCH carried in RRC signaling is the CQI/PMI feedbacks for E-PDCCH
Period 1 be worth and the first deviant, and for E-PDCCH RI feed back second week time value and the second deviant.When UE is adopted
When feeding back CSI with aperiodicity mode, base station is specially descending control signaling to the control signaling that UE is issued, and base station is descending at this
The feedback configured information carried in control signaling is specially CSI feedback request bit.
In the present embodiment, E-PDCCH is compared to Physical Downlink Shared Channel (Physical Downlink Shared
Channel；Hereinafter referred to as：PDSCH, for), the CSI of its feedback has extra restriction.For example, in order to ensure E-PDCCH's
Detection performance, needs the rank for being transmitted to be limited to a less value, is such as set smaller than or equal to 2.Base station and UE elder generations
The rank for arranging the maximum for E-PDCCH is designated as n, then RI needsIndividual bit be used for represent rank ∈ 1,2 ...,
n}.Alternatively, it is also possible to limit for the PMI of E-PDCCH feedbacks.This restriction can be prelisted by telling that UE terminals can only be used
Realizing, i.e., codebook subset is limited some specific pre-coding matrixes in code code book.For E-PDCCH and PDSCH, can adopt
Limited with different codebook subsets.The restriction of codebook subset can be notified by RRC signaling or L1 dynamic signalings, or this
It can be predetermined to plant restriction, it is not necessary to any to signal.
Furthermore, it is possible to limit modulation systems of the E-PDCCH only with lower-order, such as quaternary phase keying
(Quaternary Phase Shift Keying；Hereinafter referred to as：QPSK), 16 quadrature amplitude modulation (Quadrature
Amplitude Modulation；Hereinafter referred to as：QAM) etc..Now the CQI for E-PDCCH is PDSCH CQI (such as 1 institute of table
Show) a subset, if part of the modulation system for QPSK for example only in support matrix 1, E-PDCCH CQI are represented by table 2
Shown 3-bit CQI；If for example only in support matrix 1, modulation system is QPSK and efficency is less than or equal to 0.3770 again
Part, then E-PDCCH CQI be represented by the 2-bit CQI shown in table 3.
Table 14-bit PDSCH CQI Table
Table 23-bit E-PDCCH CQI Table
Table 32-bit E-PDCCH CQI Table
Also, the frequency resource that E-PDCCH takes is semi-statically configured by high level, and the frequency resource that PDSCH takes is led to
Cross DCI dynamically distributes.
Step 102, is directed to the E- to the base station feedback according to the feedback configured information in corresponding subframe
The channel condition information CSI of PDCCH.
UE is receiving the control signaling of base station transmission, and after getting the feedback configured information for wherein carrying, UE according to
The feedback configured information is directed to the CSI of E-PDCCH in corresponding subframe to base station feedback, and corresponding subframe herein is root
Specifically determine according to feedback configured information.CSI in the present embodiment includes at least one in CQI, PMI and RI, and is based on
The predetermined bandwidth in whole bandwidth or part.The predetermined bandwidth in part i.e. by be semi-statically configured continuous of RRC signaling or from
Scattered frequency resource, can adopt existing PDSCH resource allocation methods for E-PDCCH configuration frequency resources.Wherein, CQI is
Select to obtain from all of CQI indexes (index) or subset therein (for example aforementioned table 2 of the subset or table 3), PMI be from
Predefined code book or subset therein select to obtain, and RI is to select to obtain from all of order or subset therein.
In the prior art, for different feedback models and different system bandwidths, define different PUSCH's
The granularity of feedback, and the size of different subbands.Feedback model such as to PUSCH 3-1, UE ends need to feed back a broadband
PMI, need feed back each subband CQI.For PUSCH3-1, the subband size for feeding back CQI is as shown in the table.
The subband size of table 4PUSCH 3-1 patterns
So that system bandwidth is 50 RB as an example, in table 4, the subband size of the UE feedbacks for obtaining is 6 RB.In E-
In PDCCH, a RB (RB is defined here as on frequency domain being 12 subcarriers, is to account for two time slots in time domain,
Or a subframe) on, the number of available subcarrier is about as much as 3 CCE (Control Channel on PDCCH channels
Element, control channel element).In view of a PDCCH signaling, 1,2,4 or 8 can be carried on according to channel condition
On CCE.Such a E-PDDCH signalings, it is likely that just send on 1 or 2 RB.So that system bandwidth is 50 RB as an example, press
According to the feedback granularity of PUSCH3-1, subband size is 6 RB, if in the selective channel of altofrequency, such as ETU channels, it is maximum
Time delay is probably 5us, and corresponding correlation bandwidth is about 200kHz.One RB is 180kHz on frequency domain.So, substantially not
Same RB, even adjacent RB, the dependency of its frequency domain is also very low, causes the channel variation of adjacent RB also than larger.This
Sample, has obtained best subband even by PUSCH, but as E-PDCCH is sent on whole subband.Than
Such as, E-PDCCH only accounts for a RB, and the channel quality on this RB is also possible to not be fine, causes under E-PDCCH performances
Drop.Preferable scheduling gains are not obtained.
Problem for more than, the CSI feedback that can be directed to E-PDCCH define special feedback granularity, this feedback granularity
Can by system bandwidth, report the system configurations such as pattern (reporting mode) to determine, it is also possible to by base station send static state
Or semi-static or dynamic configuration mode notifies terminal.The semi-static notice can be that high-level signaling is notified, the dynamic notification
Can be that physical layer signaling is notified.It is described to report pattern report pattern for PDSCH feedbacks, such as PUSCH3-1,
PUCCH2-1 etc., or report pattern for E-PDCCH special definitions.
The CSI feedback granularity for E-PDCCH can be identical with the CSI feedback granularity of PDSCH, i.e. subband size,
Can also be different, such as the less feedback granularity of the CSI feedback granularity than PDSCH.It is exemplified below：It is new to E-PDCCH certain
What is defined reports pattern, defines feedback granularity as shown in table 5
The frequency domain granularity size of table 5E-PDCCH feedbacks
Can also, the CSI of correspondence PDSCH reports pattern PUSCH3-1, defines the feedback granularity such as table of corresponding E-PDCCH
Shown in 6
The frequency domain granularity size of table 6E-PDCCH feedbacks
Or, it is possible to use the corresponding CSI of PDSCH report pattern, increase extra instruction, combine for reporting E-
The CSI information of PDCCH.
For example in the corresponding CSI of PDSCH report pattern PUSCH 3-1, when system bandwidth is 50RB, subband size is
6, extra bit can be increased and indicate best in each subband 1 or several RB.For example, indicate often in all of subband
2 RB best in individual subband；Or indicate best RB in several best subbands, for example, in 2 best subbands
Best 2 RB, the then CQI for reporting according to PUSCH is indicated, 2 subbands of CQI highests are obtained.Selecting best several height
During the best several RB of band and selection, following system of selection is referred to.Select if desired m best subband or
RB, but have the CQI of n subband or RB identical and for best (n ＞ m), then select m according to predefined mode, for example according to
The order such as frequency domain position, subband index number is selected.
Pattern is reported using the corresponding CSI of original PDSCH, the method for extra indication bit is further added by, can still with original
There are the corresponding CSI of PDSCH to report the information such as PMI and (or) CQI that pattern fed back, only indicate best m subband or RB positions；
Can also individually feed back the information such as the best m subband or PMI and (or) CQI corresponding to RB positions, or E-PDCCH
Modulation system is fixed as QPSK QPSK, indicates without the need for CQI.
When the configured information specially periodic quantity and deviant of feedback CSI is fed back, then UE is according to the periodic quantity and skew
Value can determine the subframe numbers of periodic feedback CSI, and UE is directed to E-PDCCH to base station feedback in the subframe that the subframe numbers are indicated
CSI.When feedback configured information specially feeds back the period 1 value and the first deviant of CQI/PMI, and the of feedback RI
When two cycles value and the second deviant, then UE can determine periodic feedback CQI/ according to the period 1 value and the first deviant
First subframe numbers of PMI, can determine the second subframe numbers of periodic feedback RI, UE according to second week time value and the second deviant
The CQI/PMI of E-PDCCH is directed in the subframe that the first subframe numbers are indicated to base station feedback, in the subframe that the second subframe numbers are indicated
On to base station feedback for E-PDCCH RI.When configured information specially CSI feedback request bit is fed back, if the CSI feedback
Request bit is default bit value, then UE is directly in the subframe of setting to base station feedback CSI.
In the present embodiment, when the CSI feedback periodically for E-PDCCH and acyclic for E-PDCCH's
When CSI feedback occurs in same subframe, can only retain the acyclic CSI feedback for E-PDCCH.When for E-
When the CSI feedback of PDCCH is occurred in same subframe with the CSI feedback for PDCCH, only can retain for E-PDCCH's
CSI feedback, to ensure the performance of E-PDCCH.
In the present embodiment, the particular content of the CSI fed back by UE depends on configured transmission mode.When base station to UE
Downlink transfer pattern be configured to support multilayer transmission, then UE need feed back RI, for the transmission mould for not supporting multilayer transmission
Formula such as transmitting diversity, it is 1 that RI is permanent, so UE need not feed back RI.If transmission mode is closed loop transmission such as Closed-Loop Spatial Multiplexing,
UE needs to feed back PMI information；If transmission mode is open-loop transmission such as Open-Loop Spatial Multiplexing, UE need not feed back PMI information.Nothing
Which kind of punish under transmission mode, UE is required for feeding back CQI so as to base station selected transport block size and modulation system.If UE
Feedback RI and PMI, then the calculating of CQI is based on the RI and PMI for being fed back.The PMI and CQI of UE feedbacks can reflect broadband
(wideband) or subband (subband) channel information, its middle width strip represent whole frequency resources that system is supported, and sub
Band is then the component frequency resource by certain rule definition.The PMI and CQI information of UE feedback subbands is easy to base station to carry out by subband
Frequency selective scheduling, so as to obtain bigger multi-user diversity gain.
A kind of information feedback method is present embodiments provided, the control signaling that base station issues is received by UE, from control letter
In order obtain for E-PDCCH feedback configured information, according to the feedback configured information in corresponding subframe to base station feedback
For the CSI of E-PDCCH；This embodiment introduces for the CSI feedback of E-PDCCH, so as to the order that improve E-PDCCH is adaptive
Answer performance, prelist code performance and link circuit self-adapting performance.
Fig. 2 is the flow chart of information feedback method embodiment of the present invention two, as shown in Fig. 2 present embodiments providing one kind
Information feedback method, this enforcement illustrate technical scheme from base station side, can specifically include following steps：
Step 201, sends control signaling to user equipment, and the physical down control for extension is carried in the control signaling
The feedback configured information of channel E-PDCCH processed.
In the present embodiment, base station can be specially RRC signaling to the control signaling that UE is issued, and base station is needed in the RRC
The feedback configured information for E-PDCCH, the feedback configured information for E-PDCCH carried in RRC signaling are carried in signaling
It is the periodic quantity and deviant of CSI feedback for E-PDCCH, or, the feedback for E-PDCCH carried in RRC signaling
Configured information is the period 1 value and the first deviant fed back for the CQI/PMI of E-PDCCH, and for E-PDCCH's
The second week time value and the second deviant of RI feedbacks.Base station can also be specially descending control letter to the control signaling that UE is issued
Order, the feedback configured information that base station is carried in the descending control signaling are specially CSI feedback request bit.
Step 202, receives the user equipment in the pin fed back in corresponding subframe according to the feedback configured information
Channel condition information CSI to the E-PDCCH.
UE is receiving the control signaling of base station transmission, and after getting the feedback configured information for wherein carrying, UE according to
The feedback configured information is directed to the CSI of E-PDCCH in corresponding subframe to base station feedback, then base station is connect in corresponding subframe
The CSI of UE feedbacks is received, corresponding subframe herein is specifically determined according to feedback configured information.When UE periodic feedbacks
During CSI, receive in the subframe that the subframe numbers that base station can be determined in periodic quantity and deviant are indicated UE feedbacks for E-PDCCH
CSI, base station can also the period 1 value and the first deviant determine the first subframe numbers indicate subframe on receive UE it is anti-
The CQI/PMI for E-PDCCH of feedback, in the subframe that the second subframe numbers determined in second week time value and the second deviant are indicated
Receive the RI for E-PDCCH of UE feedbacks.When UE aperiodicity feeds back CSI, the feedback configured information that base station issues is concrete
Bit is asked for CSI feedback, if the CSI feedback request bit is default bit value, base station is directly in the subframe of setting
Receive the CSI of UE feedbacks.
CSI in the present embodiment includes at least one in CQI, PMI and RI, and predetermined based on whole bandwidth or part
Bandwidth.The continuous or discrete frequency resource that the predetermined bandwidth in part is semi-statically configured by RRC signaling.Wherein, CQI
It is to select to obtain from all of CQI indexes (index) or subset therein, PMI is from predefined code book or therein
Subset selects to obtain, and RI is to select to obtain from all of order or subset therein.
A kind of information feedback method is present embodiments provided, control signaling is issued to UE by base station, in control signaling
The feedback configured information for E-PDCCH is carried, and receives what UE was fed back according to the feedback configured information in corresponding subframe
For the CSI of E-PDCCH；This embodiment introduces for the CSI feedback of E-PDCCH, so as to the order that improve E-PDCCH is adaptive
Answer performance, prelist code performance and link circuit self-adapting performance.
Fig. 3 is the flow chart of information feedback method embodiment of the present invention three, as shown in figure 3, present embodiments providing one kind
Information feedback method, can specifically include following steps：
Step 301, base station issue RRC signaling to UE, and the cycle of the CSI feedback for E-PDCCH is carried in RRC signaling
Value and deviant.
The present embodiment periodically feeds back the CSI for E-PDCCH for UE, and CQI, PMI and the RI in CSI is same
The scene fed back in subframe.For this feedback kind, base station need configuration pin to the periodic quantity of the CSI feedback of E-PDCCH and
Deviant, base station can determine the periodic quantity and deviant of CSI feedback according to channel variation speed and CSI accuracy requirements.
This step is that the periodic quantity and deviant carrying of the CSI feedback for E-PDCCH for configuring is issued in RRC signaling by base station
UE。
Step 302, UE determine the subframe numbers of feedback CSI according to the periodic quantity and deviant.
UE determines feedback according to the periodic quantity and deviant for wherein carrying after the RRC signaling that base station issues is received
The subframe numbers used by CSI.Specifically, the subframe numbers that UE is obtained can meet the condition of following formula (1)：
Wherein, nfFor the frame number of present frame, NPThe periodic quantity of the CSI feedback for E-PDCCH to carry in RRC signaling,
NoffsetThe deviant of the CSI feedback for E-PDCCH to carry in RRC signaling,Represent subframe institute on present frame
The position at place, that is, represent the subframe is which subframe on present frame, and mod is modulus computing.From above formula (1), meet
The subframe of condition may have multiple, and may have multiple subframes to be satisfied by condition in a frame, and the subframe numbers of indication are represented herein
Subframe location in whole frame structure.The n of condition can be met by above formula (1)fAnd ns, thereby determine that anti-
The subframe numbers used by feedback CSI
Step 303, to base station feedback for E-PDCCH's in the subframe indicated by the subframe numbers that step 302 determines
CSI。
After subframe numbers are determined according to periodic quantity and deviant, indicated by the subframe numbers that UE is determined in above-mentioned steps 302
In same subframe to base station feedback for E-PDCCH CSI, the CSI in the present embodiment can including in CQI, PMI and RI extremely
It is few a kind of or arbitrarily various.The present embodiment is to base station feedback CSI, CQI, the PMI in CSI in the subframe for meeting above formula (1)
Feed back in same subframe with RI, as the subframe for meeting condition has multiple, therefore the present embodiment be UE periodically to base
Feedback of standing CQI, PMI and RI for E-PDCCH.
A kind of information feedback method is present embodiments provided, the RRC signaling that base station issues is received by UE, from RRC signaling
The middle periodic quantity and deviant obtained for E-PDCCH, the cycle in the subframe for meet condition according to the periodic quantity and deviant
Property ground to base station feedback for E-PDCCH CSI；This embodiment introduces for the CSI feedback of E-PDCCH, so as to improve
The rank adaptation performance of E-PDCCH, prelist code performance and link circuit self-adapting performance, so as to increase the power system capacity of E-PDCCH.
Fig. 4 is the flow chart of information feedback method example IV of the present invention, as shown in figure 4, present embodiments providing one kind
Information feedback method, can specifically include following steps：
Step 401, base station issue RRC signaling to UE, carry what is fed back for the CQI/PMI of E-PDCCH in RRC signaling
Period 1 be worth and the first deviant, and for E-PDCCH RI feed back second week time value and the second deviant.
The present embodiment periodically feeds back the CSI for E-PDCCH for UE, and the CQI and PMI in CSI is in same son
Feed back in frame, the scene that RI is fed back in single subframe, i.e. CQI/PMI and RI feed back on different sub frames.For this
Feedback kind, base station need to be respectively configured period 1 value and the first deviant fed back for the CQI/PMI of E-PDCCH, with
And for E-PDCCH RI feed back second week time value and the second deviant, base station can be according to channel variation speed and CSI
Accuracy requirement determines period 1 value, the first deviant, second week time value and second deviant of CSI feedback.This step is
Period 1 value and the first deviant that the CQI/PMI for E-PDCCH for configuring is fed back by base station, and it is directed to E-PDCCH
RI feedback second week time value and the second deviant carry UE is issued in RRC signaling.
Step 402, UE was worth according to the period 1 and the first deviant determines first subframe numbers of feedback CQI/PMI.
UE after the RRC signaling that base station issues is received, according to the period 1 value and the first deviant for wherein carrying come
It is determined that the first subframe numbers that feedback CQI/PMI is used.Specifically, the first subframe numbers that UE is obtained can meet following formula (2)
Condition：
Wherein, nfFor the frame number of present frame, NP, 1What the CQI/PMI for E-PDCCH to carry in RRC signaling fed back
Period 1 is worth, NOffset, 1First deviant of the CQI/PMI feedbacks for E-PDCCH to carry in RRC signaling,
Subframe location on present frame is represented, that is, represents the subframe is which subframe on present frame, mod is that modulus are transported
Calculate.From above formula (2), the subframe for meeting condition may have multiple, and may have multiple subframes to be satisfied by condition in a frame,
First subframe numbers of indication represent subframe location in whole frame structure herein.Can be expired by above formula (2)
The n of sufficient conditionfAnd ns, thereby determine that the first subframe numbers that feedback CQI/PMI is used
Step 403, UE determine second subframe numbers of feedback RI according to second week time value and the second deviant.
UE after the RRC signaling that base station issues is received, according to the second week time value and the second deviant for wherein carrying come
It is determined that the second subframe numbers that feedback RI is used.Specifically, the second subframe numbers that UE is obtained can meet the condition of following formula (3)：
Wherein, nfFor the frame number of present frame, NP, 2For the second week that the RI for E-PDCCH carried in RRC signaling feeds back
Time value, NOffset, 2Second deviant of the RI feedbacks for E-PDCCH to carry in RRC signaling,Represent that subframe exists
Location on present frame, that is, represent the subframe is which subframe on present frame, and mod is modulus computing.By above formula (3)
Understand, the subframe for meeting condition may have multiple, and there may be multiple subframes to be satisfied by condition in a frame, herein the of indication
Two subframe numbers represent subframe location in whole frame structure.The n of condition can be met by above formula (3)fWith
ns, thereby determine that the second subframe numbers that feedback RI is used
Step 404, is directed to E-PDCCH to base station feedback in the subframe indicated by the first subframe numbers that step 402 determines
CQI and PMI.
After the first subframe numbers are determined according to period 1 value and the first deviant, UE determine in above-mentioned steps 402
The CQI and PMI of E-PDCCH are directed in same subframe indicated by one subframe numbers to base station feedback.The present embodiment is in satisfaction
To base station feedback CQI and PMI in first subframe of formula (2), as the subframe for meeting condition has multiple, therefore the present embodiment is UE
The CQI and PMI of E-PDCCH are directed to base station feedback periodically.
Step 405, is directed to E-PDCCH to base station feedback in the subframe indicated by the second subframe numbers that step 403 determines
RI.
After the second subframe numbers are determined according to second week time value and the second deviant, UE determine in above-mentioned steps 403
The RI of E-PDCCH is directed in same subframe indicated by two subframe numbers to base station feedback.The present embodiment is to meet above formula (3)
To base station feedback RI in second subframe, as the subframe for meeting condition has multiple, thus the present embodiment be UE periodically to base
RI of the feedback of standing for E-PDCCH.
A kind of information feedback method is present embodiments provided, the RRC signaling that base station issues is received by UE, from RRC signaling
The middle period 1 value obtained for E-PDCCH, the first deviant, second week time value and the second deviant, according to this first week
Time value and the first deviant are periodically directed to the CQI and PMI of E-PDCCH, root in the subframe for meet condition to base station feedback
Periodically it is directed to E-PDCCH's to base station feedback according to the second week time value and the second deviant in the subframe for meet condition
RI；This embodiment introduces for the CSI feedback of E-PDCCH, so as to improve rank adaptation performance, the precoding of E-PDCCH
Performance and link circuit self-adapting performance, so as to increase the power system capacity of E-PDCCH.
Fig. 5 is the flow chart of information feedback method embodiment of the present invention five, as shown in figure 5, present embodiments providing one kind
Information feedback method, can specifically include following steps：
Step 501, base station issue descending control signaling to UE, carry for E-PDCCH's in the descending control signaling
CSI feedback asks bit.
The present embodiment is the scene that UE aperiodically feeds back the CSI for E-PDCCH.In order to support acyclic pin
CSI feedback to E-PDCCH, base station can carry the CSI feedback request bit for E-PDCCH in descending control signaling,
The CSI feedback request bit is used to identify whether base station asks the CSI feedback for E-PDCCH.Specifically, base station can basis
Whether need to trigger the aperiodic CSI of UE feedbacks to determine the value of the feedback request bit.Base station can be uplink scheduling DCI's
During send the instruction for asking the CSI feedback, that is, send CSI feedback request bit mentioned above.In LTE-Advanced
In agreement, for uplink scheduling descending control instruction can be 4 two kinds of forms of DCI format 0 and DCI format, DCI
0 forms of format are sent scene suitable for up single antenna, and 4 forms of DCI format are applied to upstream multi-antenna and send field
Jing Zhong, can select one of which form as the case may be, then increase the CSI feedback request for E-PDCCH wherein
Bit.
Step 502, UE judge whether this is default bit value for the CSI feedback request bit of E-PDCCH, if
It is, then execution step 503, otherwise process ends.
UE get after the descending control signaling that base station issues is received, therefrom wherein carry for E-PDCCH's
CSI feedback asks bit, and UE judges whether the CSI feedback request bit is default bit value, default in the present embodiment
Bit value can be specially 1.When the CSI feedback request bit for E-PDCCH carried in descending control signaling is 1, hold
Row step 503, otherwise shows that the acyclic CSI feedback for E-PDCCH is not asked in base station, then process ends.
Step 503, to base station feedback CSI after the subframe of the default subframe delay quantity of UE delays.
When the CSI feedback request bit for E-PDCCH carried in the descending control signaling that UE is received is 1, table
Bright base station requests UE feedback is directed to the CSI of E-PDCCH, then UE postpones default son after CSI feedback request bit is received
To base station feedback CSI after the subframe of frame delay quantity, i.e. UE postpones after some subframes after the instruction is known to base station feedback
CSI.Subframe delay quantity herein can be pre-set according to practical situation, be such as set to 20, then postpone 20 upon receipt
CSI is fed back in subframe after individual subframe.
A kind of information feedback method is present embodiments provided, the descending control signaling that base station issues is received by UE, under
The CSI feedback request bit for E-PDCCH is obtained in row control signaling, when the CSI feedback request bit is default bit
During value, the CSI of E-PDCCH is directed to after the subframe for postponing default subframe delay quantity to base station feedback；The present embodiment is introduced
For the CSI feedback of E-PDCCH, so as to improve the rank adaptation performance of E-PDCCH, prelist code performance and link circuit self-adapting
Performance, so as to increase the power system capacity of E-PDCCH.
One of ordinary skill in the art will appreciate that：Realize that all or part of step of said method embodiment can pass through
Completing, aforesaid program can be stored in a computer read/write memory medium the related hardware of programmed instruction, the program
Upon execution, perform the step of including said method embodiment；And aforesaid storage medium includes：ROM, RAM, magnetic disc or light
Disk etc. is various can be with the medium of store program codes.
Fig. 6 is the structure chart of user equipment embodiment of the present invention, as shown in fig. 6, present embodiments providing a kind of user
Equipment, can specifically perform each step in said method embodiment one, and here is omitted.The user that the present embodiment is provided
Equipment can specifically include the first receiver module 601 and feedback module 602.Wherein, the first receiver module 601 is used to receive base station
The control signaling for issuing, the feedback that the Physical Downlink Control Channel E-PDCCH for extension is carried in the control signaling are indicated
Information.Feedback module 602 is described for being directed to the base station feedback in corresponding subframe according to the feedback configured information
The channel condition information CSI of E-PDCCH.
Fig. 7 is the structure chart of user equipment embodiment of the present invention two, as shown in fig. 7, present embodiments providing a kind of user
Equipment, can specifically perform said method embodiment three, example IV or each step in embodiment five, no longer go to live in the household of one's in-laws on getting married herein
State.On the basis shown in above-mentioned Fig. 6, described in the first receiver module 601 is directed to the user equipment that the present embodiment is provided
The feedback configured information of E-PDCCH includes the periodic quantity and deviant of the CSI feedback for E-PDCCH.Feedback module 602 can be with
Specifically include the first determining unit 612 and the first feedback unit 622.Wherein, the first determining unit 612 is for according to above formula (1)
It is determined that the subframe numbers of feedback CSI.First feedback unit 622 for it is determined that the subframe numbers indicated by subframe on to described
CSI of the base station feedback for the E-PDCCH.
Or, the feedback configured information for E-PDCCH in the first receiver module 601 in the present embodiment includes
The period 1 value fed back for the CQI/PMI of E-PDCCH and the first deviant, and for E-PDCCH RI feed back the
Two cycles value and the second deviant.Feedback module 602 can specifically include the second determining unit 632, the 3rd determining unit 642,
Second feedback unit 652 and the 3rd feedback unit 662.Second determining unit 632 for according to the period 1 value and it is described
First deviant determines first subframe numbers of feedback CQI/PMI, and the first subframe numbers meet the condition of above formula (2).3rd determines list
Unit 642 is for the second subframe numbers according to the second week time value and second deviant determination feedback RI, the second subframe numbers
Meet the condition of above formula (3).Second feedback unit 652 in the subframe indicated by first subframe numbers to the base station
CQI and PMI of the feedback for the E-PDCCH.3rd feedback unit 662 is in the subframe indicated by second subframe numbers
On to the base station feedback for the E-PDCCH RI.
Or, the feedback configured information for E-PDCCH in the first receiver module 601 in the present embodiment is pin
CSI feedback request bit to E-PDCCH.Feedback module 602 can specifically include the 4th feedback unit 672, the 4th feedback
Unit 672 is for when the CSI feedback request bit for E-PDCCH is default bit value, the default subframe of delay is prolonged
Backward base station feedback CSI of subframe of slow quantity.
Specifically, the CSI in the present embodiment includes at least one in CQI, PMI and RI, and based on whole bandwidth or
The predetermined bandwidth in part.The continuous or discrete frequency resource that the predetermined bandwidth in part is semi-statically configured by RRC signaling.
Wherein, CQI is to select to obtain from all of CQI index or subset therein, and PMI is from predefined code book or wherein
Subset select to obtain, RI is to select to obtain from all of order or subset therein.
A kind of user equipment is present embodiments provided, by receiving the control signaling that base station issues, is obtained from control signaling
The feedback configured information for E-PDCCH is taken, E- is directed to base station feedback according to the feedback configured information in corresponding subframe
The CSI of PDCCH；This embodiment introduces for the CSI feedback of E-PDCCH, so as to improve the rank adaptation of E-PDCCH
Can, prelist code performance and link circuit self-adapting performance.
Fig. 8 is the structure chart of base station embodiment of the present invention, as shown in figure 8, a kind of user equipment is present embodiments provided,
Each step in said method embodiment two can be specifically performed, here is omitted.The base station that the present embodiment is provided can be with
Specifically include sending module 801 and the second receiver module 802.Wherein, sending module 801 is believed for sending control to user equipment
Order, carries the feedback configured information of the Physical Downlink Control Channel E-PDCCH for extension in the control signaling.Second receives
Module 802 be used for receive the user equipment according to it is described feedback configured information feed back in corresponding subframe for the E-
The channel condition information CSI of PDCCH.
Fig. 9 is the structure chart of base station embodiment of the present invention two, as shown in figure 9, a kind of user equipment is present embodiments provided,
Said method embodiment three, example IV or each step in embodiment five can be specifically performed, here is omitted.This reality
The base station of example offer is applied on the basis shown in above-mentioned Fig. 8, the feedback for E-PDCCH in sending module 801 refers to
Show that information includes the periodic quantity and deviant of the CSI feedback for E-PDCCH.Second receiver module 802 can specifically include
One receiving unit 812, the first receiving unit 812 are used to receive the user equipment according to the periodic quantity and the deviant
It is determined that subframe numbers indicated by subframe on the CSI for the E-PDCCH that feeds back, the subframe numbers can be according to above formula
(1) determine.
Or, the feedback configured information for E-PDCCH in the sending module 801 in the present embodiment includes being directed to
The period 1 value and the first deviant of the CQI/PMI feedbacks of E-PDCCH, and the second week of the RI feedbacks for E-PDCCH
Time value and the second deviant.Second receiver module 802 can specifically include the second receiving unit 822 and the 3rd receiving unit 832.
Wherein, the second receiving unit 822 is used to receive the user equipment according to the period 1 value and first deviant
It is determined that the first subframe numbers indicated by subframe on the CQI and PMI for the E-PDCCH that feed back, first subframe numbers
Can be determined according to above formula (2).3rd receiving unit 832 be used to receiving the user equipment according to the second week time value and
The RI for the E-PDCCH fed back in the subframe indicated by the second subframe numbers that second deviant determines, described the
Two subframe numbers can be determined according to above formula (3).
Or, the control signaling in sending module 801 in the present embodiment is descending control signaling, described for E-
The feedback configured information of PDCCH is the CSI feedback request bit for E-PDCCH.Second receiver module 802 can be specifically included
4th receiving unit 842, it is default that the 4th receiving unit 842 is used for when the CSI feedback request bit for E-PDCCH
During bit value, the CSI that the user equipment is fed back after the subframe for postponing default subframe delay quantity is received.
A kind of base station is present embodiments provided, and by control signaling being issued to UE, is carried for E- in control signaling
The feedback configured information of PDCCH, and receive UE according to the feedback configured information feed back in corresponding subframe for E-PDCCH
CSI；This embodiment introduces for the CSI feedback of E-PDCCH, so as to improve the rank adaptation performance of E-PDCCH, prelisting
Code performance and link circuit self-adapting performance.
Finally it should be noted that：Above example only to illustrate technical scheme, rather than a limitation；Although
With reference to the foregoing embodiments the present invention has been described in detail, it will be understood by those within the art that：Which still may be used
To modify to the technical scheme described in previous embodiment, or equivalent is carried out to which part technical characteristic；And
These modifications are replaced, and do not make the essence of appropriate technical solution depart from the spirit and model of embodiment of the present invention technical scheme
Enclose.
Claims (25)
1. a kind of information feedback method, it is characterised in that include：
The control signaling that base station issues is received, the Physical Downlink Control Channel E- for extension in the control signaling, is carried
The feedback configured information of PDCCH；
The channel status of the E-PDCCH is directed in corresponding subframe according to the feedback configured information to the base station feedback
Information CSI, the CSI include at least one in channel quality indicator (CQI), pre-coding matrix instruction PMI and order instruction RI or
It is arbitrarily various；
The channel for being directed to the E-PDCCH according to the feedback configured information in corresponding subframe to the base station feedback
Also include following any one before status information CSI：
The frequency domain granularity of E-PDCCH CSI feedbacks is determined according to system bandwidth；According to the frequency domain granularity, E- to be feedback is determined
PDCCH CSI；
The static configuration sent according to base station determines the frequency domain granularity of E-PDCCH CSI feedbacks；According to the frequency domain granularity, it is determined that
E-PDCCH CSI to be feedback；
According to the frequency domain granularity for being semi-statically configured determination E-PDCCH CSI feedbacks that base station sends；According to the frequency domain granularity, really
Fixed E-PDCCH CSI to be feedback；
The dynamic configuration sent according to base station determines the frequency domain granularity of E-PDCCH CSI feedbacks；According to the frequency domain granularity, it is determined that
E-PDCCH CSI to be feedback.
2. method according to claim 1, it is characterised in that the feedback configured information for E-PDCCH includes pin
Periodic quantity and deviant to the CSI feedback of E-PDCCH；
The CSI for being directed to the E-PDCCH according to the feedback configured information in corresponding subframe to the base station feedback
Including：
The subframe numbers of feedback CSI are determined according to following formula：
Wherein, nfFor the frame number of present frame, NPFor the periodic quantity, NoffsetFor the deviant,Represent that subframe is being worked as
Location in previous frame, mod are modulus computing；
It is determined that subframe numbers indicated by subframe on to the base station feedback for the E-PDCCH CSI.
3. method according to claim 1, it is characterised in that the feedback configured information for E-PDCCH includes pin
The period 1 value fed back by the CQI/PMI of E-PDCCH and the first deviant, and second of the RI feedbacks for E-PDCCH
Periodic quantity and the second deviant；
The CSI for being directed to the E-PDCCH according to the feedback configured information in corresponding subframe to the base station feedback
Including：
First subframe numbers of feedback CQI/PMI are determined according to period 1 value and first deviant, described first is sub
Frame number meets following formula condition：
Wherein, nfFor the frame number of present frame, NP,1It is worth for the period 1, Noffse,1For first deviant,Table
Show subframe location on present frame, mod is modulus computing；
Second subframe numbers of feedback RI are determined according to the second week time value and second deviant, second subframe numbers are full
Foot formula condition：
Wherein, nfFor the frame number of present frame, NP,2For the second week time value, Noffse,2For second deviant,Table
Show subframe location on present frame, mod is modulus computing；
The CQI and PMI of the E-PDCCH are directed in the subframe indicated by first subframe numbers to the base station feedback；
The RI of the E-PDCCH is directed in the subframe indicated by second subframe numbers to the base station feedback.
4. method according to claim 1, it is characterised in that the feedback configured information for E-PDCCH be for
The CSI feedback request bit of E-PDCCH；
The CSI for being directed to the E-PDCCH according to the feedback configured information in corresponding subframe to the base station feedback
Including：
When the CSI feedback request bit for E-PDCCH is default bit value, postpone default subframe delay quantity
Backward base station feedback CSI of subframe.
5. according to arbitrary described method in Claims 1 to 4, it is characterised in that the CSI is based on whole bandwidth or portion
Divide predetermined bandwidth.
6. method according to claim 1, it is characterised in that the feedback configured information for E-PDCCH includes pin
Position to the sub-frame offset value and PUSCH of the CSI feedback of E-PDCCH on frequency domain.
7. according to arbitrary described method in Claims 1 to 4, it is characterised in that also include：
When feeding back the E-PDCCH on PUSCH, when the system bandwidth is identical, the corresponding CSI feedback of the E-PDCCH
Frequency domain granularity size less than or equal to the corresponding CSI feedbacks of Physical Uplink Shared Channel PUSCH frequency domain granularity size；Or
When feeding back the E-PDCCH on PUCCH, when the system bandwidth is identical, the corresponding CSI feedback of the E-PDCCH
Frequency domain granularity size less than or equal to the corresponding CSI feedbacks of Physical Uplink Control Channel PUCCH frequency domain granularity size.
8. method according to claim 7, it is characterised in that also include：
The corresponding CSI of the E-PDCCH report pattern can CSI corresponding with PUSCH or PUCCH report pattern identical, also may be used
With difference.
9. method according to claim 7, it is characterised in that the frequency domain granularity of the corresponding CSI feedback of the E-PDCCH is big
The little frequency domain granularity size less than or equal to the corresponding CSI feedbacks of Physical Uplink Shared Channel PUSCH includes following any one：
When the system bandwidth is 6-7 Resource Block RB, determine that subband size is 1RB；
When the system bandwidth is 8-10RB, determine that the subband size is 2RB；
When the system bandwidth is 11-26RB, determine that the subband size is 2RB；
When the system bandwidth is 27-63RB, determine that the subband size is 3RB；
When the system bandwidth is 64-110RB, determine that the subband size is 4RB.
10. according to arbitrary described method in Claims 1 to 4, it is characterised in that also include：
Include position indication information in the corresponding CSI feedback information of E-PDCCH；
The channel conditions that the position indication information is used in the frequency domain granularity of the feedback for indicating the corresponding CSI of PDSCH are best
At least one RB, or the position indication information be used for indicate the corresponding CSI of PDSCH feedback channel conditions it is best one
At least one best RB of channel conditions in individual or several frequency domain granularities.
11. according to the method described in claim 10, it is characterised in that also include：
CSI feedback information acquisitioies of the PMI and/or CQI in the corresponding CSI information of E-PDCCH from PDSCH, the PMI and/or
Position indication information of the frequency domain resource positional information corresponding to CQI from the corresponding CSI feedback information of E-PDCCH is obtained；Or
Person,
Also including the frequency that the channel conditions indicated by the position indication information are best in the corresponding CSI feedback information of E-PDCCH
PMI and/or CQI corresponding to domain granularity and/or RB.
12. according to arbitrary described method in Claims 1 to 4, it is characterised in that the modulation system of the E-PDCCH is fixed
For QPSK QPSK, indicate without the need for CQI.
13. methods according to claim 1 and 2, it is characterised in that the CQI is from all of CQI indexes or wherein
Subset select to obtain, the PMI is to select to obtain from predefined code book or subset therein, and the RI is from all of
Order or subset therein select to obtain.
14. a kind of information feedback methods, it is characterised in that include：
Send control signaling to user equipment, in the control signaling, carry the Physical Downlink Control Channel E- for extension
The feedback configured information of PDCCH；
Receive the user equipment according to it is described feedback configured information feed back in corresponding subframe for the E-PDCCH's
Channel condition information CSI, the CSI are the CSI determined according to frequency domain granularity, and the frequency domain granularity is：According to system bandwidth, base
The frequency that the static configuration of transmission, any one being semi-statically configured in the dynamic configuration sent with base station of base station transmission of standing determines
Domain granularity, the CSI include at least one in channel quality indicator (CQI), pre-coding matrix instruction PMI and order instruction RI or appoint
Meaning is various.
15. methods according to claim 14, it is characterised in that the feedback configured information for E-PDCCH includes
For the periodic quantity and deviant of the CSI feedback of E-PDCCH；
It is described receive the user equipment according to the feedback configured information feed back in corresponding subframe for the E-
The channel condition information CSI of PDCCH includes：
Receive the user equipment anti-in the subframe indicated by the subframe numbers determined according to the periodic quantity and the deviant
The CSI for the E-PDCCH of feedback, the subframe numbers are determined according to following formula：
Wherein, nfFor the frame number of present frame, NPFor the periodic quantity, NoffsetFor the deviant,Represent that subframe is being worked as
Location in previous frame, mod are modulus computing.
16. methods according to claim 14, it is characterised in that the feedback configured information for E-PDCCH includes
The period 1 value fed back for the CQI/PMI of E-PDCCH and the first deviant, and for E-PDCCH RI feed back the
Two cycles value and the second deviant；
It is described receive the user equipment according to the feedback configured information feed back in corresponding subframe for the E-
The channel condition information CSI of PDCCH includes：
The user equipment is received in the first subframe numbers indication determined according to the period 1 value and first deviant
The CQI and PMI for the E-PDCCH fed back in the subframe shown, first subframe numbers meet following formula condition：
Wherein, nfFor the frame number of present frame, NP,1It is worth for the period 1, Noffse,1For first deviant,Table
Show subframe location on present frame, mod is modulus computing；
The user equipment is received in the second subframe numbers indication determined according to the second week time value and second deviant
The RI for the E-PDCCH fed back in the subframe shown, second subframe numbers meet following formula condition：
Wherein, nfFor the frame number of present frame, NP,2For the second week time value, Noffse,2For second deviant,Table
Show subframe location on present frame, mod is modulus computing.
17. methods according to claim 14, it is characterised in that the feedback configured information for E-PDCCH is pin
CSI feedback request bit to E-PDCCH；
It is described receive the user equipment according to the feedback configured information feed back in corresponding subframe for the E-
The channel condition information CSI of PDCCH includes：
When the CSI feedback request bit for E-PDCCH is default bit value, receives the user equipment and postponing
The CSI fed back after the subframe of default subframe delay quantity.
18. a kind of user equipmenies, it is characterised in that include：
First receiver module, for receiving the control signaling that base station issues, carries the physics for extension in the control signaling
The feedback configured information of down control channel E-PDCCH；
Feedback module, for being directed to the E- to the base station feedback according to the feedback configured information in corresponding subframe
The channel condition information CSI of PDCCH, the CSI include channel quality indicator (CQI), pre-coding matrix instruction PMI and order instruction RI
In it is at least one or arbitrarily various；
The channel for being directed to the E-PDCCH according to the feedback configured information in corresponding subframe to the base station feedback
Also include following any one before status information CSI：
The frequency domain granularity of E-PDCCH CSI feedbacks is determined according to system bandwidth；According to the frequency domain granularity, E- to be feedback is determined
PDCCH CSI；
The static configuration sent according to base station determines the frequency domain granularity of E-PDCCH CSI feedbacks；According to the frequency domain granularity, it is determined that
E-PDCCH CSI to be feedback；
According to the frequency domain granularity for being semi-statically configured determination E-PDCCH CSI feedbacks that base station sends；According to the frequency domain granularity, really
Fixed E-PDCCH CSI to be feedback；
The dynamic configuration sent according to base station determines the frequency domain granularity of E-PDCCH CSI feedbacks；According to the frequency domain granularity, it is determined that
E-PDCCH CSI to be feedback.
19. user equipmenies according to claim 18, it is characterised in that described for E- in first receiver module
The feedback configured information of PDCCH includes the periodic quantity and deviant of the CSI feedback for E-PDCCH；
The feedback module includes：
First determining unit, for the subframe numbers of feedback CSI are determined according to following formula：
Wherein, nfFor the frame number of present frame, NPFor the periodic quantity, NoffsetFor the deviant,Represent that subframe is being worked as
Location in previous frame, mod are modulus computing；
First feedback unit, for it is determined that the subframe numbers indicated by subframe on to the base station feedback be directed to the E-
The CSI of PDCCH.
20. user equipmenies according to claim 18, it is characterised in that described for E- in first receiver module
The feedback configured information of PDCCH includes period 1 value and the first deviant fed back for the CQI/PMI of E-PDCCH, and
The second week time value fed back for the RI of E-PDCCH and the second deviant；
The feedback module includes：
Second determining unit, for the first of feedback CQI/PMI is determined according to period 1 value and first deviant
Subframe numbers, first subframe numbers meet following formula condition：
Wherein, nfFor the frame number of present frame, NP,1It is worth for the period 1, Noffse,1For first deviant,Table
Show subframe location on present frame, mod is modulus computing；
3rd determining unit, for second subframe of feedback RI is determined according to the second week time value and second deviant
Number, second subframe numbers meet following formula condition：
Wherein, nfFor the frame number of present frame, NP,2For the second week time value, Noffse,2For second deviant,Table
Show subframe location on present frame, mod is modulus computing；
Second feedback unit, for being directed to the E- to the base station feedback in the subframe indicated by first subframe numbers
The CQI and PMI of PDCCH；
3rd feedback unit, for being directed to the E- to the base station feedback in the subframe indicated by second subframe numbers
The RI of PDCCH.
21. user equipmenies according to claim 18, it is characterised in that described for E- in first receiver module
The feedback configured information of PDCCH is the CSI feedback request bit for E-PDCCH；
The feedback module includes：
4th feedback unit, for when the CSI feedback request bit for E-PDCCH is default bit value, postponing
Backward base station feedback CSI of the subframe of default subframe delay quantity.
22. a kind of base stations, it is characterised in that include：
Sending module, for sending control signaling to user equipment, carries the physical down for extension in the control signaling
The feedback configured information of control channel E-PDCCH；
Second receiver module, for receiving what the user equipment was fed back in corresponding subframe according to the feedback configured information
For the channel condition information CSI of the E-PDCCH, the CSI be according to frequency domain granularity determine CSI, the frequency domain granularity
For：It is semi-statically configured in the dynamic configuration sent with base station according to what system bandwidth, the static configuration of base station transmission, base station sent
The frequency domain granularity that determines of any one, the CSI includes channel quality indicator (CQI), pre-coding matrix instruction PMI and order instruction
It is at least one or arbitrarily various in RI.
23. base stations according to claim 22, it is characterised in that described for E-PDCCH's in the sending module
Feedback configured information includes the periodic quantity and deviant of the CSI feedback for E-PDCCH；
Second receiver module includes：
First receiving unit, for receiving the user equipment in the subframe numbers determined according to the periodic quantity and the deviant
The CSI for the E-PDCCH fed back in indicated subframe, the subframe numbers are determined according to following formula：
Wherein, nfFor the frame number of present frame, NPFor the periodic quantity, NoffsetFor the deviant,Represent that subframe is being worked as
Location in previous frame, mod are modulus computing.
24. base stations according to claim 22, it is characterised in that described for E-PDCCH's in the sending module
Feedback configured information includes period 1 value and the first deviant fed back for the CQI/PMI of E-PDCCH, and is directed to E-
The second week time value and the second deviant of the RI feedbacks of PDCCH；
Second receiver module includes：
Second receiving unit, is determining according to the period 1 value and first deviant for receiving the user equipment
The first subframe numbers indicated by subframe on the CQI and PMI for the E-PDCCH that feed back, first subframe numbers meet
Following formula condition：
Wherein, nfFor the frame number of present frame, NP,1It is worth for the period 1, Noffse,1For first deviant,Table
Show subframe location on present frame, mod is modulus computing；
3rd receiving unit, is determining according to the second week time value and second deviant for receiving the user equipment
The second subframe numbers indicated by subframe on the RI for the E-PDCCH that feeds back, second subframe numbers meet following formula bar
Part：
Wherein, nfFor the frame number of present frame, NP,2For the second week time value, Noffse,2For second deviant,Table
Show subframe location on present frame, mod is modulus computing.
25. base stations according to claim 22, it is characterised in that described for E-PDCCH's in the sending module
Feedback configured information is the CSI feedback request bit for E-PDCCH；
Second receiver module includes：
4th receiving unit, for when the CSI feedback request bit for E-PDCCH is default bit value, receiving
The CSI that the user equipment is fed back after the subframe for postponing default subframe delay quantity.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110361974.9A CN102916785B (en) | 2011-08-04 | 2011-11-15 | Information feedback method, user equipment and base station |
| PCT/CN2012/079178 WO2013017034A1 (en) | 2011-08-04 | 2012-07-26 | Information feedback method, user equipment and base station |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102225006 | 2011-08-04 | ||
| CN201110222500.6 | 2011-08-04 | ||
| CN201110222500 | 2011-08-04 | ||
| CN201110361974.9A CN102916785B (en) | 2011-08-04 | 2011-11-15 | Information feedback method, user equipment and base station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102916785A CN102916785A (en) | 2013-02-06 |
| CN102916785B true CN102916785B (en) | 2017-04-12 |
Family
ID=47615030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110361974.9A Active CN102916785B (en) | 2011-08-04 | 2011-11-15 | Information feedback method, user equipment and base station |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102916785B (en) |
| WO (1) | WO2013017034A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014183264A1 (en) * | 2013-05-14 | 2014-11-20 | 华为技术有限公司 | Csi feedback method of enhanced physical downlink control channel and user equipment |
| CN105165083A (en) * | 2013-07-11 | 2015-12-16 | 华为技术有限公司 | Method for feeding back channel state information (CSI), user equipment, and base station |
| CN105099603B (en) | 2014-04-28 | 2020-07-10 | 北京三星通信技术研究有限公司 | Method and device for reporting channel state information |
| EP4322600A3 (en) | 2014-12-23 | 2024-05-22 | Huawei Technologies Co., Ltd. | Channel measurement and feedback method, network device, and system |
| JP2018504045A (en) * | 2015-01-28 | 2018-02-08 | 富士通株式会社 | Unlicensed band channel information feedback method, apparatus and communication system |
| CN106559182B (en) * | 2015-09-25 | 2020-06-16 | 中兴通讯股份有限公司 | Method, device and system for obtaining configuration of channel parameters |
| US20180077689A1 (en) * | 2016-09-15 | 2018-03-15 | Qualcomm Incorporated | Multiple bandwidth operation |
| CN108809606A (en) * | 2016-11-04 | 2018-11-13 | 华为技术有限公司 | The method and apparatus of information feedback |
| CN108282209A (en) * | 2017-01-05 | 2018-07-13 | 华为技术有限公司 | Transmission method, the apparatus and system of channel state information |
| CN111901068A (en) * | 2020-05-22 | 2020-11-06 | 中兴通讯股份有限公司 | Information feedback method, device, communication node and storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101677261A (en) * | 2008-09-18 | 2010-03-24 | 华为技术有限公司 | Management method and apparatus of period parameters of channel quality indication (CQI) feedback |
| CN101931440A (en) * | 2009-06-19 | 2010-12-29 | 华为技术有限公司 | Channel state information acquisition method and device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101212282B (en) * | 2006-12-27 | 2010-12-08 | 华为技术有限公司 | Multi-input/multi-output based communication method and system |
| WO2010140298A1 (en) * | 2009-06-02 | 2010-12-09 | パナソニック株式会社 | Wireless communication apparatus and wireless communication method |
-
2011
- 2011-11-15 CN CN201110361974.9A patent/CN102916785B/en active Active
-
2012
- 2012-07-26 WO PCT/CN2012/079178 patent/WO2013017034A1/en active Application Filing
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101677261A (en) * | 2008-09-18 | 2010-03-24 | 华为技术有限公司 | Management method and apparatus of period parameters of channel quality indication (CQI) feedback |
| CN101931440A (en) * | 2009-06-19 | 2010-12-29 | 华为技术有限公司 | Channel state information acquisition method and device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013017034A1 (en) | 2013-02-07 |
| CN102916785A (en) | 2013-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102916785B (en) | Information feedback method, user equipment and base station | |
| JP7307826B2 (en) | Multi-resource uplink sounding and antenna subset transmission | |
| US11057902B2 (en) | Channel rank updates in multiple-input multiple-output communication systems | |
| CN110073620B (en) | Method and apparatus for multiplexing channel state information | |
| CN111769860B (en) | CQI information receiving method, transmitting method, receiving device and transmitting device | |
| CN105359427B (en) | Method for sending the feedback information for making beam forming detach by terminal in a wireless communication system | |
| CN103155438B (en) | The method and apparatus of the effective Feedback in the wireless communication system supporting multiple antenna | |
| CN102843209B (en) | The method and apparatus of control channel | |
| CN101771505B (en) | A kind of indicating means of extra pre-coding matrix index and system | |
| US20170338877A1 (en) | Method for channel-related feedback and apparatus for same | |
| US10033507B2 (en) | Method for performing channel estimation, and apparatus therefor | |
| CN107925465A (en) | The communication technology of CSI RS is used in mobile communication system | |
| CN102469489B (en) | Method and device for reporting channel quality indicator (CQI) | |
| CN101686214B (en) | Method and device for performing channel quality indicator estimation | |
| CN104604173A (en) | Method for providing feedback of channel state information in wireless communication system and apparatus for same | |
| CN101807981B (en) | Preprocessing method used by codebook and communication system | |
| CN102111246A (en) | Method for feeding back channel state information and user equipment | |
| CN102469496A (en) | Method and device for reporting channel quality information | |
| CN101960729A (en) | Communicating a feedback data structure containing information identifying coding to be applied on wirelessly communicated signaling | |
| CN102315871A (en) | Processing method of non-periodic channel state information and device and system | |
| CN105610481A (en) | Method, terminal and base station for sending/receiving channel state information in communication system | |
| CN107819560A (en) | For the method and apparatus in cellular telecommunication system | |
| CN103634085A (en) | Methods, devices and system for PMI feedbacking and receiving | |
| CN108352877A (en) | The dynamic precoding of shared reference signal | |
| US9923736B2 (en) | Method for performing channel estimation, and apparatus therefor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |