CN107294585A - The feedback method and device of channel condition information - Google Patents

The feedback method and device of channel condition information Download PDF

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Publication number
CN107294585A
CN107294585A CN201610203734.9A CN201610203734A CN107294585A CN 107294585 A CN107294585 A CN 107294585A CN 201610203734 A CN201610203734 A CN 201610203734A CN 107294585 A CN107294585 A CN 107294585A
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China
Prior art keywords
feedback
running time
frequency resource
condition information
channel condition
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CN201610203734.9A
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CN107294585B (en
Inventor
王瑜新
鲁照华
陈艺戬
李儒岳
肖华华
李永
吴昊
蔡剑兴
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ZTE Corp
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ZTE Corp
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Priority to CN201610203734.9A priority Critical patent/CN107294585B/en
Priority to PCT/CN2017/077660 priority patent/WO2017167091A1/en
Publication of CN107294585A publication Critical patent/CN107294585A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a kind of feedback method of channel condition information and device, wherein, this method includes：Receive the configuration signal of base station；According to the configuration signal on running time-frequency resource that is pre-defined or configuring to the base station feedback downlink channel condition information, the problem of feedback of channel condition information has waste and the big feedback quantity for causing a large amount of descending pilot frequency resource overheads in LTE A or 5G communication systems in correlation technique is solved, the waste of descending pilot frequency resource overhead and the feedback quantity of terminal is reduced.

Description

The feedback method and device of channel condition information
Technical field
The present invention relates to technical field of intelligent traffic, in particular to the feedback method and dress of a kind of channel condition information Put.
Background technology
In Long Term Evolution (Advanced Long Term, referred to as LTE) system, public reference signal is used (Common Reference Signal, referred to as CRS) carries out pilot measurement and data demodulation, i.e., all users make Channel estimation is carried out with CRS.Transmitting terminal additional notifications receiving terminal is needed during using precoding processing mode based on CRS Used specific pre-coding matrix (being referred to as precoding weights) information when data are sent, and the expense of pilot tone It is larger.In multi-user's multiple-input and multiple-output, (Multi-user Multi-input Multi-output are referred to as in addition MU-MIMO) in system, because multiple terminals use identical CRS, it is impossible to realize the orthogonal of pilot tone, therefore can not Estimation interference.
In enhanced Long Term Evolution (Advanced Long Term Evolution, referred to as LTE-A) system, in order to Reduce pilot-frequency expense and improve channel estimation accuracy, pilot measurement and data demodulation function are separated, two are respectively defined Class reference signal：Demodulated reference signal (Demodulation Reference Signal, referred to as DMRS) and channel shape State information reference signal (Channel State Information Referenced Signal, referred to as CSI-RS).Wherein CSI-RS is mainly used in channel measurement, and to obtain channel quality information, (Channel Quaulity Information are referred to as CQI) and feed back, base station side is completed user's scheduling using the information and is realized modulation coding mode The self-adjusted block of (Modulation and Coding Scheme, referred to as MCS), in CSI-RS transmission not Carry precoding information；And DMRS is mainly used in Physical Downlink Shared Channel (Physical Downlink Shared Channel, referred to as PDSCH) and enhanced Physical Downlink Control Channel (enhanced Physical Downlink Control Channel, referred to as ePDCCH) channel estimation to complete the demodulation of data/control channel, DMRS's Transmission carries corresponding PDSCH/ePDCCH precoding information.LTE and lte-a system are according to up-downgoing duplex side The difference of formula can be divided into FDD (Frequency Division Duplex, referred to as FDD) and time division duplex (Time Division Duplex, referred to as TDD) system, the CSI-RS and DMRS of FDD and TDD system pattern meeting Difference.
Fig. 1 is the frame structure schematic diagram one according to FDD system in correlation technique, as shown in figure 1, the frame of FDD system Structure includes：The radio frames of one 10 milliseconds (ms) are 0.5ms, the time slot (slot) of numbering 0~19 by 20 length Composition, subframe (subframe) i that time slot 2i and 2i+1 composition length are 1ms.The frame structure of TDD system, Fig. 2 It is the frame structure schematic diagram two according to FDD system in correlation technique, as shown in Fig. 2 10ms radio frames are by two Individual a length of 5ms field (half frame) composition a, field includes the subframe that 5 length are 1ms, subframe i It is defined as 2 a length of 0.5ms time slot 2i and 2i+1.
In above two frame structure, for standard cyclic prefix (Normal Cyclic Prefix, referred to as Normal CP), One time slot includes the symbol that 7 length are 66.7 microseconds (us), wherein the CP length of first symbol is 5.21us, The CP length of remaining 6 symbol is 4.69us；For extended cyclic prefix, (Extended Cyclic Prefix are referred to as Extended CP), a time slot includes 6 symbols, and the CP length of all symbols is 16.67us.Chronomere Ts It is defined as Ts=1/ (15000 × 2048) second, to each subframe in a radio frames, " D " represents to be exclusively used in descending biography Defeated subframe, " U " represents to be exclusively used in the subframe of uplink, and " S " represents to be used for descending pilot frequency time slot (Downlink Pilot Time Slot, referred to as DwPTS), protection interval (Guard Period, referred to as GP) and uplink pilot time slot The special subframe in (Uplink Pilot Time Slot, referred to as UpPTS) these three domains, their length obeys DwPTS, GP and UpPTS threes total length is 30720Ts=1ms.Each subframe i is represented by 2 time slots 2i and 2i+1, The a length of T of each time slotslot=15360Ts=0.5ms.
In LTE and LTE-A, the up control signaling for needing to transmit has correct/error response message (Acknowledgement/Negative Acknowledgement, referred to as ACK/NACK), and reflect descending thing Manage three kinds of forms of channel condition information (Channel State Information, referred to as CSI)：Channel quality is indicated (Channels quality indication, referred to as CQI), pre-coding matrix instruction (Pre-coding Matrix Indicator, Referred to as PMI), order instruction (Rank Indicator, referred to as RI).
Channel quality indicator (CQI) plays the effect of key during link circuit self-adapting, and this is one and is sent to by UE ENodeB message, the downlink channel quality for describing current UE.UE can measure the ginseng of base station transmission Symbol is examined, then CQI is obtained by calculating.
Extensive multiple-input and multiple-output (Massive Multiple Input Multiple Output, referred to as Massive MIMO) Technology is a crucial enhancing technology in next generation communication technology, and Massive mimo systems are mainly characterized by：Base Side of standing is configured with large-scale antenna array, and more than 8 antennas can be used to be launched, for example, can use 16 days Line, or 32 antennas, or 64 antennas, even more many antennas are launched.More than the transmitting transmission of 8 antennas It is exactly Massive MIMO technologies.Using this extensive multi-antenna technology, not only have using reducing between subscriber channel Interference, on the other hand, big array can also bring considerable array gain and diversity gain.If by many days Line, which comes, forms a face battle array progress transmitting transmission in vertical plane, can so effectively utilize the space of antenna for base station, Many antennas are placed in a small space, so as to both obtain the gain of the Massive MIMO in horizontal direction, again The Massive MIMO gains in vertical direction can be obtained, here it is three-dimensional extensive multiple-input and multiple-output (3 Dimensional Massive MIMO, referred to as 3D Massive MIMO) technology or as full dimension (Full Dimensional MIMO, referred to as FD MIMO) technology.
In order to reduce the resource overhead of descending pilot frequency and reduce UE feedback quantity, TDD system can usually utilize channel reciprocity Property obtains descending CSI by testing measuring reference signals (Sounding Reference Signal, referred to as SRS), But for FDD system, due to up-link and the frequency band differences of downlink, base station side is passed through using channel reciprocity Measurement SRS will become very unreliable to obtain descending CSI way, inevitably waste substantial amounts of descending lead Frequency resource overhead and the feedback quantity for increasing UE.In addition, UE feedback method due to there is PMI quantization errors, Significant impact can be produced to descending transmission performance.Based on this, in LTE-A or 5G communication systems, how feedback letter The problem of channel state information is currently one to be solved.
For the feedback of channel condition information is a large amount of descending in the presence of causing in LTE-A or 5G communication systems in correlation technique The problem of waste of pilot resources expense and big feedback quantity, effective solution is not proposed also.
The content of the invention
The invention provides a kind of feedback method of channel condition information and device, with least solve in correlation technique In LTE-A or 5G communication systems channel condition information feedback exist cause the waste of a large amount of descending pilot frequency resource overheads with And feedback quantity it is big the problem of.
According to an aspect of the invention, there is provided a kind of feedback method of channel condition information, including：Receive base station Configuration signal；According to the configuration signal on running time-frequency resource that is pre-defined or configuring to the base station feedback down channel Status information.
Further, according to the configuration signal on running time-frequency resource that is pre-defined or configuring it is descending to the base station feedback Channel condition information includes：A kind of feedback kind is selected from various feedback type or feedback system according to the configuration signal Or feedback system on running time-frequency resource that is pre-defined or configuring to the base station feedback downlink channel condition information, wherein, The feedback kind or feedback system include at least one of：Quantify feedback, non-quantized feedback, species type mono- it is anti- Feedback, species type bis- feedback, species class A feedback, species class B feedback.
Further, the quantization is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI； The non-quantized is fed back to the feedback system or feedback kind that feedback content does not include PMI and/or RI；The species Type's mono- is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI；The species type Two are fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI；Or, the species type Two are fed back to feedback system or feedback kind that feedback content includes PMI and/or RI, the species type's mono- It is fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI；The species class A's is anti- The feedback system or feedback kind for including PMI and/or RI for feedback content are presented, the species class B's is fed back to Feedback content does not include PMI and/or RI feedback system or feedback kind；Or, the species class B's is anti- The feedback system or feedback kind for including PMI and/or RI for feedback content are presented, the species class A's is fed back to Feedback content does not include PMI and/or RI feedback system or feedback kind.
Further, described pre-defined or configuration running time-frequency resource includes at least one of：Uplink demodulation reference signal The corresponding running time-frequency resources of DMRS, the time-domain symbol pair adjacent with time-domain symbol shared by uplink demodulation reference signal DMRS Running time-frequency resource, the corresponding running time-frequency resources of measuring reference signals SRS, the Physical Uplink Control Channel answered it is corresponding whole or The corresponding all or part of running time-frequency resource of portion of time frequency resources, Physical Uplink Shared Channel, TDD it is special The corresponding running time-frequency resource of uplink pilot time slot in subframe.
Further, the down channel shape is fed back on running time-frequency resource that is pre-defined or configuring according to the configuration signal State information includes one below：The downlink channel condition information is added to the uplink demodulation reference signal DMRS Or fed back on the measuring reference signals SRS；The downlink channel condition information is taken into the uplink demodulation with reference to letter Fed back on number DMRS or described measuring reference signals SRS；The downlink channel condition information is carried out after frequency domain expansion It is mapped on Physical Uplink Control Channel or the corresponding all or part of running time-frequency resource of Physical Uplink Shared Channel and feeds back.
Further, the uplink pilot time slot in described pre-defined or configuration running time-frequency resource is TDD special subframe In the case of corresponding running time-frequency resource, according to the configuration signal on running time-frequency resource that is pre-defined or configuring to the base Feedback of down channel status information of standing includes：SRS is sent on the corresponding running time-frequency resource of uplink pilot time slot of a symbol, The downlink channel condition information is carried using the uplink pilot time slot of remaining one or more symbol.
Further, it is DMRS pairs of the uplink demodulation reference signal in described pre-defined or configuration running time-frequency resource In the case of the running time-frequency resource answered, methods described also includes：When the frequency comb of the uplink demodulation reference signal DMRS When quantity is 2,4 or 8, the downlink channel condition information is carried using one or more frequency combs therein.
Further, it is described to be included using one or more frequency comb bearing downlink channel condition informations therein：Will be described Downlink channel condition information be multiplied with the uplink demodulation reference signal DMRS after signal, be mapped to described 1 or On the corresponding running time-frequency resource of multiple frequency combs.
Further, the configuration signal is additionally operable to indicate whether the terminal needs to feed back the downlink channel condition information, Wherein, indicate one of in the following manner：Use 1 bit data indicating bit in descending control signaling, and 5 bits Modulation, whether terminal described in coded system and redundancy versions indicating bit joint instructions need to feed back the downlink channel condition Information；Whether needed using terminal described in the CSI request position in descending control signaling and SRS request position joint instructions Feed back the downlink channel condition information；By way of high-level signaling is terminal configuration feedback cycle and sub-frame offset To indicate whether the terminal needs to feed back the downlink channel condition information.
Further, the downlink channel condition information includes at least one of：The terminal is joined in channel condition information Examine the signal received on the corresponding running time-frequency resources of signal CSI-RS, the descending channel information of the base station to the terminal, The base station to the down channel of the terminal covariance matrix information, the down channel of the base station to the terminal Maximum 1 right singular vector of covariance matrix or 2 right singular vector information of maximum, the base station to the end The multipath directional information of the down channel at end and the amplitude information per footpath.
According to another aspect of the present invention, a kind of feedback method of channel condition information is additionally provided, including：Sent out to terminal Configuration order is sent, the configuration signal is used to notify the terminal on running time-frequency resource that is pre-defined or configuring to the base Stand feedback of down channel status information.
Further, include on running time-frequency resource that is pre-defined or configuring to the base station feedback downlink channel condition information： A kind of feedback kind or feedback system are selected from various feedback type or feedback system in time-frequency that is pre-defined or configuring To the base station feedback downlink channel condition information in resource, wherein, the feedback kind or feedback system are included below extremely It is one of few：Quantify feedback, non-quantized feedback, species type mono- feedback, species type bis- feedback, species class A Feedback, species class B feedback.
Further, the quantization is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI； The non-quantized is fed back to the feedback system or feedback kind that feedback content does not include PMI and/or RI；The species Type's mono- is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI；The species type Two are fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI；Or, the species type Two are fed back to feedback system or feedback kind that feedback content includes PMI and/or RI, the species type's mono- It is fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI；The species class A's is anti- The feedback system or feedback kind for including PMI and/or RI for feedback content are presented, the species class B's is fed back to Feedback content does not include PMI and/or RI feedback system or feedback kind；Or, the species class B's is anti- The feedback system or feedback kind for including PMI and/or RI for feedback content are presented, the species class A's is fed back to Feedback content does not include PMI and/or RI feedback system or feedback kind.
Further, described pre-defined or configuration running time-frequency resource includes at least one of：Uplink demodulation reference signal The corresponding running time-frequency resources of DMRS, the time-domain symbol pair adjacent with time-domain symbol shared by uplink demodulation reference signal DMRS Running time-frequency resource, the corresponding running time-frequency resources of measuring reference signals SRS, the Physical Uplink Control Channel answered it is corresponding whole or The corresponding all or part of running time-frequency resource of portion of time frequency resources, Physical Uplink Shared Channel, TDD it is special The corresponding running time-frequency resource of uplink pilot time slot in subframe.
Further, the configuration signal is additionally operable to indicate whether the terminal needs to feed back the downlink channel condition letter Breath, wherein, indicate one of in the following manner：Using 1 bit new data indicating bit in descending control signaling, and Whether the modulation of 5 bits, coded system and terminal described in redundancy versions indicating bit joint instructions need the feedback descending letter Channel state information；It is using terminal described in the CSI request position in descending control signaling and SRS request position joint instructions It is no to need to feed back the downlink channel condition information；It is that the terminal configures feedback cycle and subframe is inclined by high-level signaling The mode put indicates whether the terminal needs to feed back the downlink channel condition information.
Further, the downlink channel condition information includes at least one of：The terminal is joined in channel condition information Examine the signal received on the corresponding running time-frequency resources of signal CSI-RS, the descending channel information of the base station to the terminal, The base station to the down channel of the terminal covariance matrix information, the down channel of the base station to the terminal Maximum 1 right singular vector of covariance matrix or 2 right singular vector information of maximum, the base station to the end The multipath directional information of the down channel at end and the amplitude information per footpath.
In accordance with a further aspect of the present invention there is provided a kind of feedback device of channel condition information, including：Receiving module, Configuration signal for receiving base station；Feedback module, for according to the configuration signal in time-frequency that is pre-defined or configuring To the base station feedback downlink channel condition information in resource.
Further, the feedback module includes：First feedback unit, for according to the configuration signal from various feedback Select a kind of feedback kind or feedback system on running time-frequency resource that is pre-defined or configuring to institute in type or feedback system Base station feedback downlink channel condition information is stated, wherein, the feedback kind or feedback system include at least one of：Amount Change feedback, non-quantized feedback, species type mono- feedback, species type bis- feedback, species class A feedback, Species class B feedback.
Further, described pre-defined or configuration running time-frequency resource includes at least one of：Uplink demodulation reference signal The corresponding running time-frequency resources of DMRS, the time-domain symbol pair adjacent with time-domain symbol shared by uplink demodulation reference signal DMRS Running time-frequency resource, the corresponding running time-frequency resources of measuring reference signals SRS, the Physical Uplink Control Channel answered it is corresponding whole or The corresponding all or part of running time-frequency resource of portion of time frequency resources, Physical Uplink Shared Channel, TDD it is special The corresponding running time-frequency resource of uplink pilot time slot in subframe.
Further, the feedback module includes one below：Second feedback unit, for by the downlink channel condition Information superposition is fed back on the uplink demodulation reference signal DMRS or described measuring reference signals SRS；3rd feedback Unit, joins for the downlink channel condition information to be taken into the uplink demodulation reference signal DMRS or described measurements Examine and fed back on signal SRS；4th feedback unit, for being reflected after the downlink channel condition information is carried out into frequency domain expansion It is mapped on Physical Uplink Control Channel or the corresponding all or part of running time-frequency resource of Physical Uplink Shared Channel and feeds back.
Further, the feedback module is additionally operable to, the spy for being TDD in described pre-defined or configuration running time-frequency resource In different subframe in the case of the corresponding running time-frequency resource of uplink pilot time slot, when the uplink pilot time slot of a symbol is corresponding SRS is sent in frequency resource, the downlink channel condition is carried using the uplink pilot time slot of remaining one or more symbol Information.
Further, described device also includes：Carrier module, for being in described pre-defined or configuration running time-frequency resource In the case of the corresponding running time-frequency resource of the uplink demodulation reference signal DMRS, when the uplink demodulation reference signal When DMRS frequency comb quantity is 2,4 or 8, the down channel is carried using one or more frequency combs therein Status information.
Further, the carrier module includes：Map unit, for by the downlink channel condition information with it is described Signal after row demodulated reference signal DMRS multiplications, is mapped to the corresponding running time-frequency resource of one or more described frequency combs On.
In accordance with a further aspect of the present invention, a kind of feedback device of channel condition information is additionally provided, including：Sending module, For to terminal send configuration order, the configuration signal to be used to notify the terminal in time-frequency money that is pre-defined or configuring To the base station feedback downlink channel condition information on source.
By the present invention, using the configuration signal for receiving base station；According to the configuration signal it is pre-defined or configure when To the base station feedback downlink channel condition information in frequency resource, solve in correlation technique in LTE-A or 5G communication systems The problem of in system there is waste and the big feedback quantity for causing a large amount of descending pilot frequency resource overheads in the feedback of channel condition information, Reduce the waste of descending pilot frequency resource overhead and the feedback quantity of terminal.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, the present invention Schematic description and description be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is the frame structure schematic diagram one according to FDD system in correlation technique；
Fig. 2 is the frame structure schematic diagram two according to FDD system in correlation technique；
Fig. 3 is the flow chart of the feedback method of channel condition information according to embodiments of the present invention；
Fig. 4 is the block diagram of the feedback device of channel condition information according to embodiments of the present invention；
Fig. 5 is the block diagram one of the feedback device of channel condition information according to the preferred embodiment of the invention；
Fig. 6 is the block diagram two of the feedback device of channel condition information according to the preferred embodiment of the invention；
Fig. 7 is the uplink pilot time slot feedback of down channel status information according to embodiments of the present invention in TDD subframes Schematic diagram.
Embodiment
Describe the present invention in detail below with reference to accompanying drawing and in conjunction with the embodiments.It should be noted that in the feelings not conflicted Under condition, the feature in embodiment and embodiment in the application can be mutually combined.
The embodiments of the invention provide a kind of feedback method of channel condition information, Fig. 3 is letter according to embodiments of the present invention The flow chart of the feedback method of channel state information, as shown in figure 3, including：
Step S302, receives the configuration signal of base station；
Step S304, according to the configuration signal on running time-frequency resource that is pre-defined or configuring to the descending letter of the base station feedback Channel state information.
By above-mentioned steps, the configuration signal of base station is received；According to the configuration signal in time-frequency money that is pre-defined or configuring To the base station feedback downlink channel condition information on source, solve in correlation technique and believe in LTE-A or 5G communication systems The problem of feedback of channel state information has waste and the big feedback quantity for causing a large amount of descending pilot frequency resource overheads, reduces The waste of descending pilot frequency resource overhead and the feedback quantity of terminal.
Further, according to the configuration signal on running time-frequency resource that is pre-defined or configuring to the base station feedback down channel Status information includes：A kind of feedback kind or feedback are selected from various feedback type or feedback system according to the configuration signal Mode on running time-frequency resource that is pre-defined or configuring to the base station feedback downlink channel condition information, wherein, the feedback sort Type or feedback system include at least one of：Quantify feedback, non-quantized feedback, species type mono- feedback, species type Two feedback, species class A feedback, species class B feedback.
Further, the quantization is fed back to the feedback system or feedback kind that feedback content includes PMI and/or RI；Should Non-quantized is fed back to the feedback system or feedback kind that feedback content does not include PMI and/or RI；Species type mono- Be fed back to feedback system or feedback kind that feedback content includes PMI and/or RI；Species type bis- feedback PMI and/or RI feedback system or feedback kind is not included for feedback content；Or, species type's bis- is anti- The feedback system or feedback kind for including PMI and/or RI for feedback content are presented, being fed back to for species type mono- is anti- Feedback content does not include PMI and/or RI feedback system or feedback kind；Species class A's is fed back in feedback Hold the feedback system or feedback kind for including PMI and/or RI, the species class B feedback content that is fed back to is not wrapped Feedback system or feedback kind containing PMI and/or RI；Or, species class B's is fed back to feedback content bag Feedback system or feedback kind containing PMI and/or RI, the species class A feedback content that is fed back to do not include PMI and/or RI feedback system or feedback kind.
Further, pre-defined or configuration the running time-frequency resource includes at least one of：Uplink demodulation reference signal The corresponding running time-frequency resources of DMRS, the time-domain symbol pair adjacent with time-domain symbol shared by uplink demodulation reference signal DMRS Running time-frequency resource, the corresponding running time-frequency resources of measuring reference signals SRS, the Physical Uplink Control Channel answered it is corresponding whole or The corresponding all or part of running time-frequency resource of portion of time frequency resources, Physical Uplink Shared Channel, TDD it is special The corresponding running time-frequency resource of uplink pilot time slot in subframe.
Further, downlink channel condition letter is fed back on running time-frequency resource that is pre-defined or configuring according to the configuration signal Breath includes one below：The downlink channel condition information is added to uplink demodulation reference signal DMRS or the measurement Fed back on reference signal SRS；The downlink channel condition information is taken into uplink demodulation reference signal DMRS or the survey Measure and fed back on reference signal SRS；Physical uplink control is mapped to after the downlink channel condition information is carried out into frequency domain expansion Fed back on channel or the corresponding all or part of running time-frequency resource of Physical Uplink Shared Channel.
Further, the uplink pilot time slot pair in pre-defined or configuration the running time-frequency resource is TDD special subframe In the case of the running time-frequency resource answered, according to the configuration signal on running time-frequency resource that is pre-defined or configuring to the base station feedback Downlink channel condition information includes：SRS is sent on the corresponding running time-frequency resource of uplink pilot time slot of a symbol, is used The uplink pilot time slot of remaining one or more symbol carries the downlink channel condition information.
Further, it is corresponding for uplink demodulation reference signal DMRS in pre-defined or configuration the running time-frequency resource In the case of running time-frequency resource, this method also includes：When uplink demodulation reference signal DMRS frequency comb quantity for 2, When 4 or 8, the downlink channel condition information is carried using one or more frequency combs therein.
Further, this is included using one or more frequency comb bearing downlink channel condition informations therein：This is descending Channel condition information be multiplied with uplink demodulation reference signal DMRS after signal, be mapped to one or more frequencies Comb on corresponding running time-frequency resource.
Further, the configuration signal is additionally operable to indicate whether the terminal needs to feed back the downlink channel condition information, wherein, Indicate one of in the following manner：Using 1 bit data indicating bit in descending control signaling, and 5 bits modulation, Whether coded system and the redundancy versions indicating bit joint instructions terminals need to feed back the downlink channel condition information；Under use Whether CSI request position and the SRS request position joint instructions terminal in row control signaling need to feed back the down channel Status information；Indicate whether the terminal needs by way of high-level signaling is terminal configuration feedback cycle and sub-frame offset Feed back the downlink channel condition information.
Further, the downlink channel condition information includes at least one of：The terminal is in channel condition information with reference to letter The signal received on number corresponding running time-frequency resources of CSI-RS, the descending channel information of the base station to the terminal, the base station To the covariance matrix information of the down channel of the terminal, the covariance matrix of the down channel of the base station to the terminal is most 1 big right singular vector or 2 right singular vector information of maximum, the multipath of the down channel of the base station to the terminal Directional information and the amplitude information per footpath.
The embodiment of the present invention additionally provides a kind of feedback method of channel condition information, including：To terminal send configuration order, The configuration signal is used to notify the terminal on running time-frequency resource that is pre-defined or configuring to the base station feedback down channel shape State information.
Further, include on running time-frequency resource that is pre-defined or configuring to the base station feedback downlink channel condition information： A kind of feedback kind or feedback system are selected from various feedback type or feedback system in time-frequency that is pre-defined or configuring To the base station feedback downlink channel condition information in resource, wherein, the feedback kind or feedback system include it is following at least it One：Quantify feedback, non-quantized feedback, species type mono- feedback, species type bis- feedback, species class A Feedback, species class B feedback.
Further, the quantization is fed back to the feedback system or feedback kind that feedback content includes PMI and/or RI；Should Non-quantized is fed back to the feedback system or feedback kind that feedback content does not include PMI and/or RI；Species type mono- Be fed back to feedback system or feedback kind that feedback content includes PMI and/or RI；Species type bis- feedback PMI and/or RI feedback system or feedback kind is not included for feedback content；Or, species type's bis- is anti- The feedback system or feedback kind for including PMI and/or RI for feedback content are presented, being fed back to for species type mono- is anti- Feedback content does not include PMI and/or RI feedback system or feedback kind；Species class A's is fed back in feedback Hold the feedback system or feedback kind for including PMI and/or RI, the species class B feedback content that is fed back to is not wrapped Feedback system or feedback kind containing PMI and/or RI；Or, species class B's is fed back to feedback content bag Feedback system or feedback kind containing PMI and/or RI, the species class A feedback content that is fed back to do not include PMI and/or RI feedback system or feedback kind.
Further, pre-defined or configuration the running time-frequency resource includes at least one of：Uplink demodulation reference signal The corresponding running time-frequency resources of DMRS, the time-domain symbol pair adjacent with time-domain symbol shared by uplink demodulation reference signal DMRS Running time-frequency resource, the corresponding running time-frequency resources of measuring reference signals SRS, the Physical Uplink Control Channel answered it is corresponding whole or The corresponding all or part of running time-frequency resource of portion of time frequency resources, Physical Uplink Shared Channel, TDD it is special The corresponding running time-frequency resource of uplink pilot time slot in subframe.
Further, the configuration signal is additionally operable to indicate whether the terminal needs to feed back the downlink channel condition information, wherein, Indicate one of in the following manner：Use the tune of 1 bit new data indicating bit in descending control signaling, and 5 bits Whether system, coded system and the redundancy versions indicating bit joint instructions terminals need to feed back the downlink channel condition information；Make Whether needing feedback with the CSI request position in descending control signaling and the SRS request position joint instructions terminal, this is descending Channel condition information；The terminal is indicated by way of high-level signaling is terminal configuration feedback cycle and sub-frame offset Whether need to feed back the downlink channel condition information.
Further, the downlink channel condition information includes at least one of：The terminal is in channel condition information with reference to letter The signal received on number corresponding running time-frequency resources of CSI-RS, the descending channel information of the base station to the terminal, the base station To the covariance matrix information of the down channel of the terminal, the covariance matrix of the down channel of the base station to the terminal is most 1 big right singular vector or 2 right singular vector information of maximum, the multipath of the down channel of the base station to the terminal Directional information and the amplitude information per footpath.
The embodiments of the invention provide a kind of feedback device of channel condition information, Fig. 4 is letter according to embodiments of the present invention The block diagram of the feedback device of channel state information, as shown in figure 4, including：
Receiving module 42, the configuration signal for receiving base station；
Feedback module 44, for according to the configuration signal on running time-frequency resource that is pre-defined or configuring under the base station feedback Row channel condition information.
Fig. 5 is the block diagram one of the feedback device of channel condition information according to the preferred embodiment of the invention, as shown in figure 5, Feedback module 44 includes：
First feedback unit 52, for selecting a kind of feed back from various feedback type or feedback system according to the configuration signal Type or feedback system on running time-frequency resource that is pre-defined or configuring to the base station feedback downlink channel condition information, wherein, The feedback kind or feedback system include at least one of：Quantify feedback, non-quantized feedback, species type mono- feedback, Species type bis- feedback, species class A feedback, species class B feedback.
Further, pre-defined or configuration the running time-frequency resource includes at least one of：Uplink demodulation reference signal The corresponding running time-frequency resources of DMRS, the time-domain symbol pair adjacent with time-domain symbol shared by uplink demodulation reference signal DMRS Running time-frequency resource, the corresponding running time-frequency resources of measuring reference signals SRS, the Physical Uplink Control Channel answered it is corresponding whole or The corresponding all or part of running time-frequency resource of portion of time frequency resources, Physical Uplink Shared Channel, TDD it is special The corresponding running time-frequency resource of uplink pilot time slot in subframe.
Fig. 6 is the block diagram two of the feedback device of channel condition information according to the preferred embodiment of the invention, as shown in fig. 6, Feedback module 44 includes one below：
Second feedback unit 62, for the downlink channel condition information to be added to uplink demodulation reference signal DMRS Or fed back on measuring reference signals SRS；
3rd feedback unit 64, for by the downlink channel condition information take uplink demodulation reference signal DMRS or Fed back on measuring reference signals SRS；
4th feedback unit 66, for being mapped to physical uplink control after the downlink channel condition information is carried out into frequency domain expansion Fed back on channel or the corresponding all or part of running time-frequency resource of Physical Uplink Shared Channel.
Further, the feedback module 44 is additionally operable to, and is the special of TDD in pre-defined or configuration the running time-frequency resource In subframe in the case of the corresponding running time-frequency resource of uplink pilot time slot, in the corresponding time-frequency of the uplink pilot time slot of a symbol SRS is sent in resource, the downlink channel condition information is carried using the uplink pilot time slot of remaining one or more symbol.
Further, the device also includes：Carrier module, for being this in pre-defined or configuration the running time-frequency resource In the case of the corresponding running time-frequency resources of row demodulated reference signal DMRS, when uplink demodulation reference signal DMRS frequency When rate comb quantity is 2,4 or 8, the downlink channel condition information is carried using one or more frequency combs therein.
Further, the carrier module includes：Map unit, for by the downlink channel condition information and the uplink demodulation Signal after reference signal DMRS multiplications, is mapped on the corresponding running time-frequency resource of one or more frequency combs.
The embodiment of the present invention additionally provides a kind of feedback device of channel condition information, including：Sending module, for end Send configuration order is held, the configuration signal is used to notify the terminal on running time-frequency resource that is pre-defined or configuring to the base station Feedback of down channel status information.
The embodiment of the present invention is further described with reference to preferred embodiment.
Embodiment one
In the preferred embodiment, base station side is signaled under user terminal feeds back on running time-frequency resource that is predefined or configuring Row channel condition information, wherein, predefined or configuration running time-frequency resource includes：Uplink demodulation reference signal (DMRS) Corresponding running time-frequency resource；
Further, when up DMRS frequency comb quantity is 2,1 frequency comb (such as comb therein is used 0) the DMRS sequences on are used for channel estimation, and 1 frequency comb (such as comb 1) is then used to carry to need instead in addition The downlink channel condition information of feedback.For example, a width of 24 RB of uplink scheduling PUSCH band, then on comb 0 DMRS sequence lengths are 24*12/2=144, and the frequency domain resources of comb 0 can be divided into 6 pieces, and every piece of independent length that produces is 24 DMRS sequences；Then on comb 1 can bearing downlink channel condition information 6 elements, each element frequency Domain has carried out the frequency domain spread spectrum of 24 length, can effectively resist interference, strengthens the signal quality of receiving side.
Further, when up DMRS frequency comb quantity is 4,1 frequency comb (such as comb therein is used 0) the DMRS sequences on are used for channel estimation, in addition 3 frequency combs (such as comb 1, comb 2, comb 3) Then it is used to carry the downlink channel condition information for needing to feed back.
Embodiment two
In the preferred embodiment, base station side is signaled under user terminal feeds back on running time-frequency resource that is predefined or configuring Row channel condition information, wherein, predefined or configuration running time-frequency resource includes：Ascending pilot frequency in TDD special subframe The corresponding running time-frequency resource of time slot；
Fig. 7 is the uplink pilot time slot feedback of down channel status information according to embodiments of the present invention in TDD subframes Schematic diagram, as shown in Figure 7, it is assumed that be configured with 6 UpPTS symbols in special subframe, SRS comb quantity by with 2 are set to, then the SRS sequence lengths on 4 RB are 4*12/2=24, and sequence is b0, b1 ..., b23.It can be used the 1st Individual UpPTS symbols (symbol adjacent with GP) send SRS sequences, use the 2nd to the 6th UpPTS symbol The elements A 0 of bearing downlink channel condition information, A1, A2, A3.
Embodiment three
In the preferred embodiment, base station side is signaled under user terminal feeds back on running time-frequency resource that is predefined or configuring Row channel condition information, wherein, predefined or configuration running time-frequency resource includes：Uplink demodulation reference signal (DMRS) Corresponding running time-frequency resource, the corresponding running time-frequency resource of measuring reference signals (SRS), Physical Uplink Control Channel are corresponding complete Portion or the corresponding all or part of running time-frequency resource of portion of time frequency resources, Physical Uplink Shared Channel, TDD special subframe The corresponding running time-frequency resource of middle uplink pilot time slot.
Further, using the 1 bit new data indicating bit and modulation and the coding staff of 5 bits in descending control signaling Whether formula and redundancy versions indicating bit joint instructions user terminal need feedback of down channel status information；
For example, using the modulation of 1 bit new data indicating bit and 5 bits in DCI format 0 or DCI format 4 (for DCI format 4, then transmission block 1 or the correspondence of transmission block 21 is taken to compare with coded system and redundancy versions indicating bit Special new data indicating bit and the modulation of 5 bits and coded system and redundancy versions indicating bit), when new data indicating bit When value is 1 and modulation and coded system and redundancy versions indicating bit value are 29 or 30 or 31, then it represents that trigger mode Intend feedback, user terminal needs downlink channel condition information feeding back to base station.
Or, using the CSI request position in descending control signaling and SRS request position joint instructions user terminal whether Need feedback of down channel status information, for example, when CSI request position state for " 01 " or " 10 " or " 11 " and When SRS may I ask a state for " 1 " or " 01 " or " 10 " or " 11 ", then it represents that triggering analog feedback, user is whole End needs downlink channel condition information feeding back to base station.
Example IV
In the preferred embodiment, base station is by way of high-level signaling is user terminal configuration feedback cycle and sub-frame offset Carry out indicating user terminal to the base station feedback downlink channel condition information.
For example, when the subframe time slot residing for user terminal is metRelation when, then it represents that use Family needs to carry out analog feedback in present sub-frame.Wherein, nsFor the time-gap number in radio frames, TAFFor feedback cycle, ΔAFFor sub-frame offset.
When downlink channel condition information is carried on SRS, being configured to the analog feedback cycle should be the proprietary SRS of user The subset in cycle；When downlink channel condition information is carried on PUCCH, if should feedback cycle in present sub-frame CQI carries out analog feedback again, then only passes CQI and carry out analog feedback, or only carries out analog feedback without passing CQI.
Embodiment five
In the preferred embodiment, base station side signal user terminal from various feedback is similar or feedback system in select one Plant and feed back similar or feedback system to base station feedback downlink channel condition information, wherein, feedback kind or feedback system include At least one of：
Quantify feedback, non-quantized feedback, species type mono- feedback, species type bis- feedback, species class A Feedback, species class B feedback.
Wherein, quantify to be fed back to feedback system or feedback kind that feedback content includes PMI and/or RI；Non-quantized is anti- Present the feedback system or feedback kind for not including PMI and/or RI for feedback content；
Wherein, species type mono- is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI； Species type's bis- is fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI；Or, Species type's bis- is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI；Species type One is fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI
Wherein, species class A are fed back to feedback system or feedback kind that feedback content includes PMI and/or RI； Species class B's is fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI；Or, Species class B's is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI；Species class A Be fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI；
When feedback of the mode that base station signaling is indicated to quantify feedback or species type mono- or species class A, then user Terminal calculates PMI/RI/CQI, PMI/RI/CQI then is fed back into base station by measuring CSI-RS；
When the mode that base station signaling is indicated is non-quantized feedback (or being analog feedback) or species type bis- or or species During class B feedback, then user terminal calculates base station to the descending channel information of terminal by measuring CSI-RS, Or to calculate base station unusual to the covariance matrix information of the down channel of terminal or maximum 1 right side of covariance matrix Vector or 2 maximum right singular vector information, or base station is calculated to the multipath direction of the down channel of the terminal Information and the amplitude information per footpath, then feed back to base station；
Or, when the mode that base station signaling is indicated be non-quantized feed back (or being analog feedback) or species type bis- or or During species class B feedback, then user terminal will receive signal on CSI-RS running time-frequency resources, is superimposed or mutually takes On row SRS or up DMRS, feeding back channel state information is to base station in this way.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realizes that they can be concentrated on single computing device, or is distributed in multiple computing devices and is constituted Network on, alternatively, the program code that they can be can perform with computing device be realized, it is thus possible to by they Storage is performed by computing device in the storage device, and in some cases, can be to be held different from order herein They, are either fabricated to each integrated circuit modules or will be many in them by the shown or described step of row respectively Individual module or step are fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific hardware Combined with software.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the technology of this area For personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made is any Modification, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (24)

1. a kind of feedback method of channel condition information, it is characterised in that including：
Receive the configuration signal of base station；
According to the configuration signal on running time-frequency resource that is pre-defined or configuring to the base station feedback down channel Status information.
2. according to the method described in claim 1, it is characterised in that according to the configuration signal pre-defined or configuration Include on running time-frequency resource to the base station feedback downlink channel condition information：
A kind of feedback kind or feedback side are selected from various feedback type or feedback system according to the configuration signal Formula on running time-frequency resource that is pre-defined or configuring to the base station feedback downlink channel condition information, wherein, it is described Feedback kind or feedback system include at least one of：Quantify feedback, non-quantized feedback, species type mono- Feedback, species type bis- feedback, species class A feedback, species class B feedback.
3. method according to claim 2, it is characterised in that
The quantization is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI；
The non-quantized is fed back to the feedback system or feedback kind that feedback content does not include PMI and/or RI；
The species type's mono- is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI； The species type's bis- is fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI； Or, the species type's bis- is fed back to feedback system or feedback sort that feedback content includes PMI and/or RI Type, the species type's mono- is fed back to feedback system or feedback sort that feedback content does not include PMI and/or RI Type；
The species class A's is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI, The species class B's is fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI； Or, the species class B's is fed back to feedback system or feedback sort that feedback content includes PMI and/or RI Type, the species class A's is fed back to feedback system or feedback sort that feedback content does not include PMI and/or RI Type.
4. according to the method described in claim 1, it is characterised in that described pre-defined or configuration running time-frequency resource include with It is at least one lower：The corresponding running time-frequency resources of uplink demodulation reference signal DMRS and uplink demodulation reference signal DMRS The corresponding running time-frequency resource of the adjacent time-domain symbol of shared time-domain symbol, the corresponding running time-frequency resources of measuring reference signals SRS, The corresponding all or part of running time-frequency resource of Physical Uplink Control Channel, the corresponding whole of Physical Uplink Shared Channel or portion Divide the corresponding running time-frequency resource of uplink pilot time slot in running time-frequency resource, the special subframe of TDD.
5. method according to claim 4, it is characterised in that according to the configuration signal pre-defined or configuration The downlink channel condition information is fed back on running time-frequency resource includes one below：
The downlink channel condition information is added to uplink demodulation reference signal DMRS or described measurements ginseng Examine and fed back on signal SRS；
The downlink channel condition information is taken into the uplink demodulation reference signal DMRS or described measurements reference Fed back on signal SRS；
The downlink channel condition information is carried out being mapped to Physical Uplink Control Channel or physically after frequency domain expansion Fed back on the corresponding all or part of running time-frequency resource of row shared channel.
6. method according to claim 4, it is characterised in that in described pre-defined or configuration running time-frequency resource be TDD Special subframe in the case of the corresponding running time-frequency resource of uplink pilot time slot, it is fixed in advance according to the configuration signal Include on justice or the running time-frequency resource of configuration to the base station feedback downlink channel condition information：
SRS is sent on the corresponding running time-frequency resource of uplink pilot time slot of a symbol, remaining one or many is used The uplink pilot time slot of individual symbol carries the downlink channel condition information.
7. method according to claim 4, it is characterised in that in described pre-defined or configuration running time-frequency resource be institute In the case of stating the corresponding running time-frequency resources of uplink demodulation reference signal DMRS, methods described also includes：
When the frequency comb quantity of the uplink demodulation reference signal DMRS is 2,4 or 8, therein 1 is used Individual or multiple frequency combs carry the downlink channel condition information.
8. method according to claim 7, it is characterised in that described to be carried using one or more frequency combs therein Downlink channel condition information includes：
Signal after the downlink channel condition information is multiplied with the uplink demodulation reference signal DMRS, mapping Onto the corresponding running time-frequency resource of one or more described frequency combs.
9. method according to any one of claim 1 to 8, it is characterised in that the configuration signal is additionally operable to indicate Whether terminal needs to feed back the downlink channel condition information, wherein, indicate one of in the following manner：
Using 1 bit data indicating bit in descending control signaling, and the modulation of 5 bits, coded system and superfluous Whether terminal described in remaining version indicating bit joint instructions needs to feed back the downlink channel condition information；
Whether needed using terminal described in the CSI request position in descending control signaling and SRS request position joint instructions Feed back the downlink channel condition information；
The terminal is indicated by way of high-level signaling is terminal configuration feedback cycle and sub-frame offset is It is no to need to feed back the downlink channel condition information.
10. method according to claim 9, it is characterised in that the downlink channel condition information include it is following at least it One：
The signal that the terminal is received on the corresponding running time-frequency resources of channel state information reference signals CSI-RS, institute Base station is stated to the descending channel information of the terminal, covariance matrix of the base station to the down channel of the terminal Information, maximum 1 right singular vector of the covariance matrix of the base station to the down channel of the terminal or most 2 big right singular vector information, the multipath directional information of the base station to the down channel of the terminal and every footpath Amplitude information.
11. a kind of feedback method of channel condition information, it is characterised in that including：
To terminal send configuration order, the configuration signal be used to notifying the terminal it is pre-defined or configure when To base station feedback downlink channel condition information in frequency resource.
12. method according to claim 11, it is characterised in that to institute on running time-frequency resource that is pre-defined or configuring Stating base station feedback downlink channel condition information includes：
A kind of feedback kind or feedback system is selected to pre-define or matching somebody with somebody from various feedback type or feedback system To the base station feedback downlink channel condition information on the running time-frequency resource put, wherein, the feedback kind or feedback side Formula includes at least one of：Quantify feedback, non-quantized feedback, species type mono- feedback, species type bis- Feedback, species class A feedback, species class B feedback.
13. method according to claim 12, it is characterised in that
The quantization is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI；
The non-quantized is fed back to the feedback system or feedback kind that feedback content does not include PMI and/or RI；
The species type's mono- is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI； The species type's bis- is fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI； Or, the species type's bis- is fed back to feedback system or feedback sort that feedback content includes PMI and/or RI Type, the species type's mono- is fed back to feedback system or feedback sort that feedback content does not include PMI and/or RI Type；
The species class A's is fed back to feedback system or feedback kind that feedback content includes PMI and/or RI, The species class B's is fed back to feedback system or feedback kind that feedback content does not include PMI and/or RI； Or, the species class B's is fed back to feedback system or feedback sort that feedback content includes PMI and/or RI Type, the species class A's is fed back to feedback system or feedback sort that feedback content does not include PMI and/or RI Type.
14. method according to claim 11, it is characterised in that described pre-defined or configuration running time-frequency resource includes At least one of：The corresponding running time-frequency resources of uplink demodulation reference signal DMRS and uplink demodulation reference signal When the corresponding running time-frequency resource of the adjacent time-domain symbol of time-domain symbol shared by DMRS, measuring reference signals SRS are corresponding The corresponding all or part of running time-frequency resource of frequency resource, Physical Uplink Control Channel, Physical Uplink Shared Channel are corresponding The corresponding running time-frequency resource of uplink pilot time slot in all or part of running time-frequency resource, the special subframe of TDD.
15. the method according to any one of claim 11 to 14, it is characterised in that
The configuration signal is additionally operable to indicate whether the terminal needs to feed back the downlink channel condition information, wherein, Indicate one of in the following manner：
Using 1 bit new data indicating bit in descending control signaling, and the modulation of 5 bits, coded system and Whether terminal described in redundancy versions indicating bit joint instructions needs to feed back the downlink channel condition information；
Whether needed using terminal described in the CSI request position in descending control signaling and SRS request position joint instructions Feed back the downlink channel condition information；
The terminal is indicated by way of high-level signaling is terminal configuration feedback cycle and sub-frame offset is It is no to need to feed back the downlink channel condition information.
16. method according to claim 15, it is characterised in that the downlink channel condition information include it is following at least One of：
The signal that the terminal is received on the corresponding running time-frequency resources of channel state information reference signals CSI-RS, institute Base station is stated to the descending channel information of the terminal, covariance matrix of the base station to the down channel of the terminal Information, maximum 1 right singular vector of the covariance matrix of the base station to the down channel of the terminal or most 2 big right singular vector information, the multipath directional information of the base station to the down channel of the terminal and every footpath Amplitude information.
17. a kind of feedback device of channel condition information, it is characterised in that including：
Receiving module, the configuration signal for receiving base station；
Feedback module, for according to the configuration signal on running time-frequency resource that is pre-defined or configuring to the base station Feedback of down channel status information.
18. device according to claim 17, it is characterised in that the feedback module includes：
First feedback unit, for selecting one kind from various feedback type or feedback system according to the configuration signal Feedback kind or feedback system are on running time-frequency resource that is pre-defined or configuring to the base station feedback down channel shape State information, wherein, the feedback kind or feedback system include at least one of：Quantify feedback, non-quantized anti- Feedback, species type mono- feedback, species type bis- feedback, species class A feedback, species class B Feedback.
19. device according to claim 17, it is characterised in that described pre-defined or configuration running time-frequency resource includes At least one of：The corresponding running time-frequency resources of uplink demodulation reference signal DMRS and uplink demodulation reference signal When the corresponding running time-frequency resource of the adjacent time-domain symbol of time-domain symbol shared by DMRS, measuring reference signals SRS are corresponding The corresponding all or part of running time-frequency resource of frequency resource, Physical Uplink Control Channel, Physical Uplink Shared Channel are corresponding The corresponding running time-frequency resource of uplink pilot time slot in all or part of running time-frequency resource, the special subframe of TDD.
20. device according to claim 19, it is characterised in that the feedback module includes one below：
Second feedback unit, for the downlink channel condition information to be added to the uplink demodulation reference signal Fed back on DMRS or described measuring reference signals SRS；
3rd feedback unit, for the downlink channel condition information to be taken into the uplink demodulation reference signal Fed back on DMRS or described measuring reference signals SRS；
4th feedback unit, for being mapped to physical uplink after the downlink channel condition information is carried out into frequency domain expansion Fed back in control channel or the corresponding all or part of running time-frequency resource of Physical Uplink Shared Channel.
21. device according to claim 19, it is characterised in that the feedback module is additionally operable to, described fixed in advance In the case that justice or the running time-frequency resource of configuration is the corresponding running time-frequency resources of uplink pilot time slot in TDD special subframe, SRS is sent on the corresponding running time-frequency resource of uplink pilot time slot of a symbol, remaining one or more symbol is used Number uplink pilot time slot carry the downlink channel condition information.
22. device according to claim 19, it is characterised in that described device also includes：
Carrier module, for being the uplink demodulation reference signal in described pre-defined or configuration running time-frequency resource In the case of the corresponding running time-frequency resources of DMRS, when the frequency comb quantity of the uplink demodulation reference signal DMRS is 2nd, 4 or 8 when, use one or more frequency combs therein to carry the downlink channel condition information.
23. device according to claim 22, it is characterised in that the carrier module includes：
Map unit, for the downlink channel condition information to be multiplied with the uplink demodulation reference signal DMRS Signal afterwards, is mapped on the corresponding running time-frequency resource of one or more described frequency combs.
24. a kind of feedback device of channel condition information, it is characterised in that including：
Sending module, for terminal send configuration order, the configuration signal to be used to notify the terminal advance To base station feedback downlink channel condition information on the running time-frequency resource of definition or configuration.
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