CN107294582A - Acquisition methods, relevant device and the system of information feedback - Google Patents

Acquisition methods, relevant device and the system of information feedback Download PDF

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Publication number
CN107294582A
CN107294582A CN201610197499.9A CN201610197499A CN107294582A CN 107294582 A CN107294582 A CN 107294582A CN 201610197499 A CN201610197499 A CN 201610197499A CN 107294582 A CN107294582 A CN 107294582A
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CN
China
Prior art keywords
feedback information
feedback
pilot signal
information
coding matrix
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CN201610197499.9A
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Chinese (zh)
Inventor
陈润华
李辉
高秋彬
陈文洪
塔玛拉卡·拉盖施
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Datang Mobile Communications Equipment Co Ltd
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China Academy of Telecommunications Technology CATT
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Priority to CN201610197499.9A priority Critical patent/CN107294582A/en
Priority to PCT/CN2017/075761 priority patent/WO2017166977A1/en
Publication of CN107294582A publication Critical patent/CN107294582A/en
Pending legal-status Critical Current

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Classifications

    • 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
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports

Abstract

The invention provides a kind of acquisition methods of information feedback, relevant device and system, this method includes：Send the first pilot signal；The first feedback information is received, first feedback information reflects the channel status measured in first pilot signal；Send the second pilot signal；The second feedback information is received, second feedback information reflects the channel status of second pilot signal, the problem of solving high feedback complexity in the prior art and big expense.

Description

Acquisition methods, relevant device and the system of information feedback
Technical field
The present invention relates to communication technical field, more particularly to a kind of acquisition methods of information feedback, Relevant device and system.
Background technology
In the multiaerial system based on linear predictive coding, receiver is according to channel information from pre-defining Suitable pre-coding matrix is selected in the set being made up of pre-coding matrix, by the pre-coding matrix chosen in collection Index in conjunction feeds back to emitter, and the collection is collectively referred to as code book.Emitter is according to the index determination pair received The pre-coding matrix answered, and appropriate pretreatment is carried out to sending signal with it, to improve having for information transfer Effect property and reliability.Code book is the essential elements for realizing this process.
In LTE (Long Term Evolution, Long Term Evolution) system of Rel-10 versions, for base station 8 antennas are held to introduce two-stage codebook.In Rel-12 versions, also strengthen as two-stage for the antenna of base station end 4 Code book.In Rel-13 versions, base station end employs FD MIMO (Full Dimension Multi-Input-Multi-Output, full dimension Multiple Input Multiple Output) aerial array (referring to Fig. 1 and Fig. 2), Antenna port increases to 16, and can be with one-dimensional or two-dimensional arrangements.
Extensive MIMO technology with larger amt antenna element can effectively lift the performance of wireless network. For extensive MIMO technology, usually using non-precoded schemes.
For non-precoded schemes, eNB configures a N-port pilot resources, for example, can be CSI-RS (Channel State Information-Reference Signal, channel state information reference signals) or CRS (Cell-specific Reference Signal, cell own reference signal) resource, N is eNB antennas here The antenna element number of array.Each CSI-RS ports are sent from an antenna element, therefore do not carry out precoding (non-precoded).UE measures complete channel and reports N-port PMI/CQI.
In process of the present invention is realized, inventor has found that at least there are the following problems in the prior art：For Non-precoded CSI-RS, CSI feedback relies on single code book and directly fed back.Have the disadvantage that UE carries out code book and searched The complexity of rope is high, and PMI expenses are big, and this is due to the size of code book generally with N exponential increases.
The content of the invention
In view of above-mentioned technical problem, the present invention provides a kind of acquisition methods of information feedback, correlation Equipment and system, the problem of solving high feedback method complexity in the prior art and big expense.
It is described according to one aspect of the present invention there is provided a kind of acquisition methods of information feedback Method includes：
Send the first pilot signal；
The first feedback information is received, first feedback information reflects the letter measured in first pilot signal Road state；
Send the second pilot signal；
The second feedback information is received, second feedback information reflects the channel status of second pilot signal.
Alternatively, first feedback information is used for the wave beam forming or virtual for obtaining second pilot signal Change weights；
Methods described also includes：
Wave beam forming or virtualization are carried out to second pilot signal according to first feedback information.
Alternatively, methods described also includes：
Data are determined according to second feedback information or according to first feedback information and the second feedback information The transformat of transmission, and figuration is carried out to downlink data according to the transformat.
Alternatively, the transformat includes：Pre-coding matrix, time-frequency resource allocating and modulation coding mode One or more of.
Alternatively, methods described also includes：
First pilot signal and the second pilot signal are configured, wherein, first pilot signal has N1 Individual port, second pilot signal has N2 port, N1, and N2 is the positive integer more than or equal to 1, N1 and N2 numerical value is identical or different.
Alternatively, first feedback information includes following one or more：First pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1 and first are lost in instruction RI1, the instruction of the second pilot signal Information, wherein, the first pre-coding matrix instruction PMI1 points to a N1 in N1 port code book Individual port pre-coding matrix, the first channel quality information symbol CQI1 and first pre-coding matrix instruction PMI1 correspondences, described first, which is lost, indicates that RI1 reflects being lost for the first pre-coding matrix instruction PMI1；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
Alternatively, methods described also includes：
The first pilot resources and the second pilot resources are configured, wherein, first pilot signal uses described the One pilot resources, second pilot signal uses second pilot resources, or
The 3rd pilot resources are configured, wherein, first pilot signal the corresponding with the second pilot signal the 3rd is led N1 port and N2 port in frequency resource；Or
The 4th pilot resources are configured, wherein, first pilot signal and the second pilot signal can use Four pilot resources, the antenna port number of the 4th pilot resources is dynamic between subframe or semi-static change.
Alternatively, methods described also includes：
The feedback system of the first feedback information and the second feedback information is configured, wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
Alternatively, methods described also includes：
Configure the feedback parameter of first feedback information and the second feedback information, including codebook parameter, channel And/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/failure RI feedback parameters and make All or part of parameter in energy/failure CQI feedback parameter；
Send the feedback parameter of the first feedback information and the second feedback information.
According to the other side of the embodiment of the present invention, a kind of acquisition of information feedback is additionally provided Method, methods described includes：
Receive the first pilot signal；
The first feedback information is sent, first feedback information reflects the letter measured in first pilot signal Road state；
Receive the second pilot signal；
The second feedback information is sent, second feedback information reflects the channel status of second pilot signal.
Alternatively, first feedback information is used for the wave beam forming or virtual for obtaining second pilot signal Change weights.
Alternatively, methods described also includes：
Receive according to second feedback information or determined according to first feedback information and the second feedback information Transformat figuration after downlink data.
Alternatively, the transformat includes：Pre-coding matrix, time-frequency resource allocating and modulation coding mode One or more of.
Alternatively, first pilot signal has N1 port, and second pilot signal has N2 Port, N1, N2 is positive integer more than or equal to 1, and N1 and N2 numerical value are identical or different.
Alternatively, first feedback information includes following one or more：First pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1 and first are lost in instruction RI1, the instruction of the second pilot signal Information, wherein, the first pre-coding matrix instruction PMI1 points to a N1 in N1 port code book Individual port pre-coding matrix, the first channel quality information symbol CQI1 and first pre-coding matrix instruction PMI1 correspondences, described first, which is lost, indicates that RI1 reflects being lost for the first pre-coding matrix instruction PMI1；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
Alternatively, first pilot signal uses the first pilot resources, and second pilot signal uses the Two pilot resources, or
N1 port and N2 in first pilot signal the 3rd pilot resources corresponding with the second pilot signal Individual port；Or
First pilot signal and the second pilot signal can use the 4th pilot resources, the 4th pilot tone The antenna port number of resource is dynamic between subframe or semi-static change.
Alternatively, methods described also includes：
The feedback system of first feedback information and the second feedback information is received, wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
Alternatively, methods described also includes：
Receive the feedback parameter of first feedback information and the second feedback information, including codebook parameter, channel And/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/failure RI feedback parameters and make All or part of parameter in energy/failure CQI feedback parameter.
According to the another aspect of the embodiment of the present invention, a kind of access device, the access device are additionally provided Including：
First sending module, for sending the first pilot signal；
First receiving module, for receiving the first feedback information, the first feedback information reflection described first The channel status measured in pilot signal；
Second sending module, for sending the second pilot signal；
Second receiving module, for receiving the second feedback information, the second feedback information reflection described second The channel status of pilot signal.
Alternatively, first feedback information is used for the wave beam forming or virtual for obtaining second pilot signal Change weights；
The access device also includes：
Figuration module, for carrying out wave beam forming to second pilot signal according to first feedback information Or virtualization.
Alternatively, the access device also includes：
Determining module, for according to second feedback information or anti-according to first feedback information and second Feedforward information determines the transformat of data transfer, and carries out figuration to downlink data according to the transformat.
Alternatively, the transformat includes：Pre-coding matrix, time-frequency resource allocating and modulation coding mode One or more of.
Alternatively, the access device also includes：
First configuration module, for configuring first pilot signal and the second pilot signal, wherein, it is described First pilot signal has N1 port, and second pilot signal has N2 port, N1, and N2 is Positive integer more than or equal to 1, N1 and N2 numerical value are identical or different.
Alternatively, first feedback information includes following one or more：First pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1 and first are lost in instruction RI1, the instruction of the second pilot signal Information, wherein, the first pre-coding matrix instruction PMI1 points to a N1 in N1 port code book Individual port pre-coding matrix, the first channel quality information symbol CQI1 and first pre-coding matrix instruction PMI1 correspondences, described first, which is lost, indicates that RI1 reflects being lost for the first pre-coding matrix instruction PMI1；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
Alternatively, the access device also includes：
Second configuration module, for configuring the first pilot resources and the second pilot resources, wherein, described first Pilot signal uses first pilot resources, and second pilot signal uses second pilot resources, Or
The 3rd pilot resources are configured, wherein, first pilot signal the corresponding with the second pilot signal the 3rd is led N1 port and N2 port in frequency resource；Or
The 4th pilot resources are configured, wherein, first pilot signal and the second pilot signal can use Four pilot resources, the antenna port number of the 4th pilot resources is dynamic between subframe or semi-static change.
Alternatively, the access device also includes：
3rd configuration module, the feedback system for configuring the first feedback information and the second feedback information, wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
Alternatively, the access device also includes：
4th configuration module, the feedback parameter for configuring first feedback information and the second feedback information, Including codebook parameter, channel and/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/ All or part of parameter in the RI feedback parameters that fail and enable/failure CQI feedback parameter；
Send the feedback parameter of the first feedback information and the second feedback information.
According to the another aspect of the embodiment of the present invention, a kind of terminal device, the terminal device are additionally provided Including：
3rd receiving module, for receiving the first pilot signal；
3rd sending module, for sending the first feedback information, the first feedback information reflection described first The channel status measured in pilot signal；
4th receiving module, for receiving the second pilot signal；
4th sending module, for sending the second feedback information, the second feedback information reflection described second The channel status of pilot signal.
Alternatively, first feedback information is used for the wave beam forming or virtual for obtaining second pilot signal Change weights.
Alternatively, the terminal device also includes：
5th receiving module, for receiving according to second feedback information or according to first feedback information Downlink data after the transformat figuration determined with the second feedback information.
Alternatively, the transformat includes：Pre-coding matrix, time-frequency resource allocating and modulation coding mode One or more of.
Alternatively, first pilot signal has N1 port, and second pilot signal has N2 Port, N1, N2 is positive integer more than or equal to 1, and N1 and N2 numerical value are identical or different.
Alternatively, first feedback information includes following one or more：First pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1 and first are lost in instruction RI1, the instruction of the second pilot signal Information, wherein, the first pre-coding matrix instruction PMI1 points to a N1 in N1 port code book Individual port pre-coding matrix, the first channel quality information symbol CQI1 and first pre-coding matrix instruction PMI1 correspondences, described first, which is lost, indicates that RI1 reflects being lost for the first pre-coding matrix instruction PMI1；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
Alternatively, it is characterised in that
First pilot signal uses the first pilot resources, and second pilot signal is provided using the second pilot tone Source, or
N1 port and N2 in first pilot signal the 3rd pilot resources corresponding with the second pilot signal Individual port；Or
First pilot signal and the second pilot signal can use the 4th pilot resources, the 4th pilot tone The antenna port number of resource is dynamic between subframe or semi-static change.
Alternatively, the terminal device also includes：
6th receiving module, the feedback system for receiving first feedback information and the second feedback information, Wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
Alternatively, the terminal device also includes：
7th receiving module, the feedback parameter for receiving first feedback information and the second feedback information, Including codebook parameter, channel and/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/ All or part of parameter in the RI feedback parameters that fail and enable/failure CQI feedback parameter.
According to the another aspect of the embodiment of the present invention, a kind of acquisition of information feedback is additionally provided System, including：
Access device, for sending the first pilot signal；
The access device, is additionally operable to receive the first feedback information, first feedback information reflection described the The channel status measured in one pilot signal；
The access device, is additionally operable to send the second pilot signal；
The access device, is additionally operable to receive the second feedback information, second feedback information reflection described the The channel status of two pilot signals；
Terminal device, for receiving the first pilot signal；
The terminal device, is additionally operable to send the first feedback information, first feedback information reflection described the The channel status measured in one pilot signal；
The terminal device, is additionally operable to receive the second pilot signal；
The terminal device, is additionally operable to send the second feedback information, second feedback information reflection described the The channel status of two pilot signals.
A technical scheme in above-mentioned technology has the following advantages that or beneficial effect：By combining Feedback in non-precoded CSI-RS schemes and wave beam forming CSI-RS schemes, effectively reduction the present embodiment The complexity and expense of scheme.
Brief description of the drawings
Fig. 1 is 12 antenna port schematic diagrames in the two-dimensional antenna port in Rel-13 versions；
Fig. 2 is 16 antenna port schematic diagrames in the two-dimensional antenna port in Rel-13 versions；
Fig. 3 is the schematic network structure of the embodiment of the present invention；
Fig. 4 is the acquisition methods flow chart of the information feedback of the first embodiment of the present invention；
Fig. 5 is the acquisition methods flow chart of the information feedback of the second embodiment of the present invention；
Fig. 6 is the acquisition methods flow chart of the information feedback of the third embodiment of the present invention；
Fig. 7 is the schematic diagram of the access device of the fourth embodiment of the present invention；
Fig. 8 is the schematic diagram of the access device of the fifth embodiment of the present invention；
Fig. 9 is the schematic diagram of the terminal device of the sixth embodiment of the present invention；
Figure 10 is the schematic diagram of the terminal device of the seventh embodiment of the present invention；
Figure 11 is the schematic diagram of the acquisition system of the information feedback of the eighth embodiment of the present invention.
Embodiment
The exemplary embodiment of the disclosure is more fully described below with reference to accompanying drawings.Although being shown in accompanying drawing The exemplary embodiment of the disclosure, it being understood, however, that may be realized in various forms the disclosure without should be by Embodiments set forth here is limited.It is opposite to be able to be best understood from this there is provided these embodiments It is open, and can by the scope of the present disclosure completely convey to those skilled in the art.
Referring to Fig. 3, Fig. 3 is schematic network structure provided in an embodiment of the present invention, as shown in figure 3, including eventually End equipment 31 and access device 32.In an embodiment of the present invention, terminal device 31 (UE) can be mobile Phone (or mobile phone), or other equipment that can send or receive wireless signal, including user equipment is (eventually End), personal digital assistant (PDA), radio modem, radio communication device, hand-held device, knee Laptop computer, wireless phone, wireless local loop (WLL) stand, movable signal can be converted into WiFi The CPE (Customer Premise Equipment, client terminal) or intelligent movable focus of signal, intelligent family Electricity or other obstructed remarkable operations are with regard to spontaneous equipment communicated with mobile communications network of energy etc..
In an embodiment of the present invention, access device 32 can be base station, and the form of base station is not limited, Ke Yishi (3G moves base by macro base station (Macro Base Station), micro-base station (Pico Base Station), Node B The address stood), enhanced base station (ENB), family's enhanced base station (Femto eNB or Home eNode B Or Home eNB or HNEB), relay station, access point, RRU (Remote Radio Unit, far end radio frequency Module), RRH (Remote Radio Head, remote radio head) etc..
First embodiment
Based on the network structure shown in Fig. 3, referring to Fig. 4, a kind of information feedback is shown in figure Acquisition methods, the executive agent of this method is access device, is comprised the following steps that：
Step S401, the first pilot signal of transmission.
Alternatively, before step S401, access device can configure the first pilot signal and the second pilot tone letter Number, wherein, the first pilot signal has N1 port, and the second pilot signal has N2 port, its In, N1, N2 is positive integer more than or equal to 1, and N1 and N2 numerical value are identical or different.
Step S402, the first feedback information of reception, the first feedback information reflect what is measured in the first pilot signal Channel status.
Step S403, the second pilot signal of transmission.
Alternatively, in the present embodiment, above-mentioned first feedback information can be used for obtaining the second pilot signal Wave beam forming or virtualization weights, now in step S303, can lead according to the first feedback information to second Frequency signal carries out wave beam forming or virtualization, then sends the second pilot signal after figuration or virtualization, from And realize wave beam forming CSI-RS schemes so that wave beam forming CSI-RS schemes can be with non-precoded CSI-RS schemes are combined, and then effectively reduce this.
It should be noted that the first pilot signal and the second pilot signal can be, but not limited in the present embodiment It is CSI-RS, CRS etc..
Step S404, the second feedback information of reception, the second feedback information reflect the channel shape of the second pilot signal State.
In the present embodiment, the first feedback information includes following one or more：First pre-coding matrix refers to Show that PMI1, the first channel quality information symbol CQI1 and first are lost in instruction RI1, the finger of the second pilot signal Show information, wherein, the first pre-coding matrix instruction PMI1 points to one in N1 port code book N1 port pre-coding matrix, the first channel quality information symbol CQI1 and the first pre-coding matrix instruction PMI1 Correspondence, described first, which is lost, indicates that RI1 reflects being lost for the first pre-coding matrix instruction PMI1；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, the second letter Road quality information symbol CQI2 and second, which is lost, indicates RI2, wherein, the second pre-coding matrix instruction PMI2 Point to N2 port pre-coding matrix in N2 port code book, the second channel quality information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second is lost instruction RI2 reflections described the Two pre-coding matrix instruction PMI2's is lost.
Step S405, according to the second feedback information or according to the first feedback information and the second feedback information determine number Figuration is carried out to downlink data according to the transformat of transmission, and according to transformat.
In the present embodiment, alternatively, above-mentioned transformat includes：Pre-coding matrix, time-frequency resource allocating One or more of with modulation coding mode.It should be noted that above-mentioned steps S405 in the present embodiment For optional step.
In the present embodiment, alternatively, the above method also includes：Configure the first pilot resources and the second pilot tone Resource, wherein, the first pilot signal uses first pilot resources, and second pilot signal uses institute The second pilot resources, or the 3rd pilot resources of configuration are stated, wherein, the first pilot signal and the second pilot tone letter N1 port and N2 port in number pilot resources of correspondence the 3rd；Or the 4th pilot resources of configuration, its In, the first pilot signal and the second pilot signal can use the 4th pilot resources, the 4th pilot resources Antenna port number is dynamic between subframe or semi-static change.
In the present embodiment, alternatively, the above method also includes：Configure the first feedback information and the second feedback The feedback system of information, wherein, first feedback information and the second feedback information are periodic feedback, described The report cycle of first feedback information and the second feedback information and report skew combine or separate configurations；Or First feedback information and the second feedback information are non-periodic feedback, trigger described first by access device anti- Feedforward information and/or the second feedback information are reported；Or first feedback information is periodic feedback, described second Feedback information is non-periodic feedback, and non-periodic feedback is triggered by access device；Or first feedback information For non-periodic feedback, second feedback information is periodic feedback, and non-periodic feedback is touched by the access device Hair.
In the present embodiment, alternatively, the above method also includes：Configure the first feedback information and the second feedback The feedback parameter of information, including codebook parameter, channel and/or interferometry configuration parameter, enable/failure PMI All or part of ginseng in feedback parameter, enable/failure RI feedback parameters and enable/failure CQI feedback parameter Number；Send the feedback parameter of the first feedback information and the second feedback information.
In the present embodiment, by combining non-precoded CSI-RS schemes and wave beam forming CSI-RS side The complexity and expense of feedback scheme in case, effectively reduction the present embodiment.
Second embodiment
Based on the network structure shown in Fig. 3, referring to Fig. 5, a kind of information feedback is shown in figure Acquisition methods, the executive agent of this method is terminal device, is comprised the following steps that：
Step S501, the first pilot signal of reception.
Step S502, the first feedback information of transmission, are measured described in the first feedback information in the first pilot signal Channel status.
Step S503, the second pilot signal of reception.
In the present embodiment, alternatively, the first pilot signal has N1 port, and the second pilot signal has N2 port, wherein, N1, N2 is positive integer more than or equal to 1, and N1 is identical with N2 numerical value or not Together.
In the present embodiment, alternatively, the first pilot signal uses the first pilot resources, the second pilot signal Using in the second pilot resources, or the first pilot signal the 3rd pilot resources corresponding with the second pilot signal N1 port and N2 port；Or first pilot signal and the second pilot signal can use the 4th pilot tone Resource, the antenna port number of the 4th pilot resources is dynamic between subframe or semi-static change, wherein, N1, N2 For the positive integer more than or equal to 1, N1 and N2 numerical value are identical or different.
It should be noted that the first pilot signal and the second pilot signal can be, but not limited in the present embodiment It is CSI-RS, CRS etc..
Step S504, the second feedback information of transmission, the second feedback information reflect the channel shape of the second pilot signal State.
In the present embodiment, alternatively, the first feedback information is used for the wave beam forming for obtaining the second pilot signal Or virtualization weights.
First feedback information includes following one or more：First pre-coding matrix instruction PMI1, the first letter Road quality information symbol CQI1 and first is lost in instruction RI1, the configured information of the second pilot signal, wherein, The first pre-coding matrix instruction PMI1 points to N1 port precoding in N1 port code book Matrix, the first channel quality information symbol CQI1 is corresponding with the first pre-coding matrix instruction PMI1, and described first It is lost and indicates that RI1 reflects being lost for the first pre-coding matrix instruction PMI1；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, the second letter Road quality information symbol CQI2 and second, which is lost, indicates RI2, wherein, the second pre-coding matrix instruction PMI2 Point to N2 port pre-coding matrix in N2 port code book, the second channel quality information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second is lost instruction RI2 reflections described the Two pre-coding matrix instruction PMI2's is lost.
Step S505, reception are according to the second feedback information or true according to the first feedback information and the second feedback information Downlink data after fixed transformat figuration.
In the present embodiment, step S505 is optional step.Alternatively, above-mentioned transformat includes：Prelist One or more of code matrix, time-frequency resource allocating and modulation coding mode.
In the present embodiment, alternatively, the above method also includes：Receive the first feedback information and the second feedback The feedback system of information, wherein, the first feedback information and the second feedback information are periodic feedback, described first The report cycle of feedback information and the second feedback information and report skew combine or separate configurations；Or it is described First feedback information and the second feedback information are non-periodic feedback, and first feedback letter is triggered by access device Breath and/or the second feedback information are reported；Or first feedback information is periodic feedback, second feedback Information is non-periodic feedback, and non-periodic feedback is triggered by access device；Or first feedback information is non- Periodic feedback, second feedback information is periodic feedback, and non-periodic feedback is triggered by the access device.
In the present embodiment, alternatively, the above method also includes：Receive first feedback information and second The feedback parameter of feedback information, including codebook parameter, channel and/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/failure RI feedback parameters and the whole in enable/failure CQI feedback parameter or portion Divide parameter.
In the present embodiment, by combining non-precoded CSI-RS schemes and wave beam forming CSI-RS schemes, The complexity and expense of feedback scheme effectively in reduction the present embodiment.
3rd embodiment
In the present embodiment using eNB as access device, using CSI-RS as pilot signal.Referring to Fig. 6, show in figure A kind of acquisition methods of information feedback are gone out, have comprised the following steps that：
Step S601, eNB configures first CSI-RS (having N1 port), eNB to UE The first CSI-RS is sent to UE.
Step S602, UE measures the first CSI-RS and carries out channel estimation, and in N1 port code book The pre-coding matrix instruction (PMI) of N1 port pre-coding matrix of middle one sensing of selection, UE is by N1 Port PMI reports eNB, is defined as PMI1.
Alternatively, UE can also additionally report the corresponding CQI of PMI1 to eNB, be defined as CQI1.
Alternatively, UE can also additionally report order instruction RI, its reflect PMI1 order (pre-coding matrix Columns), it is defined as RI1.
It should be noted that if RI1 is not reported, PMI1 order will be pre-configured with by eNB or in agreement Middle fixation.Alternatively, PMI1 order is fixed as 1.
Step S603, eNB receives corresponding first CSI feedback of the first CSI-RS.
First CSI feedback at least includes PMI1, and alternatively, the first CSI feedback also includes：CQI1 and/or RI1。
Step S604, eNB determines a wave beam forming/virtualization matrix using PMI1 (or RI1).
Step S505, eNB configures the second CSI-RS (have N2 port) and by the 2nd CSI-RS Signal designation is to UE.
The wave beam forming that step S606, eNB is determined using step S504/virtualization matrix is to the 2nd CSI-RS Signal carries out wave beam forming/virtualization.ENB sends the second CSI-RS after figuration to UE.
The second CSI-RS after step S607, UE measurement figuration, reporting PMI2, (PMI2 is pointed to N2 port pre-coding matrix in N2 port code book).
Alternatively, CQI2 and RI2 can also be reported in this step.
Step S608, eNB receives the PMI2 of UE feedbacks.
Alternatively, CQI2/RI2 can also be included with UE feedacks in this step.
Step S609, eNB determines the transformat of downlink data according to the feedback of the second CSI-RS, Or eNB determines downlink data according to the feedback of the first CSI-RS and the feedback of the second CSI-RS Transformat.
It should be noted that above-mentioned transformat includes following one or more：Pre-coding matrix, time-frequency Resource allocation and modulation coding mode, in the above-mentioned multinomial combination that can be understood as above-mentioned three or the combination A subset.
The transformat that step S610, eNB step S609 is determined transmits downlink data to UE.
The feedback configuration in the present embodiment is introduced with reference to three kinds of configuration modes.
Configuration mode one,
Configure a CSI process related to two CSI-RSs, a CSI-RS is using N1 port Non- precoding CSI-RS, another is using N2 port wave beam forming CSI-RS.First pilot signal correspondence the One CSI-RS, the second pilot signal the second CSI-RS of correspondence.
Above-mentioned each following parameter of CSI-RS separate configurations：Sub-frame configuration, CSI-RS configurations, PDSCH With CSI-RS power ratios Pc and antenna port number.Of course, it should be understood that being also not excluded for other configurations ginseng Number.
In the present embodiment, can be each CSI-RS separate configurations measurement limitation (MR).Such as The MR of one CSI-RS (non-precoding) is configured to OFF, the second CSI-RS (wave beam forming) MR be configured to ON.It should be noted that the MR configurations of two CSI-RSs can be with identical With difference.For a CSI-RS, if measurement limitation arrangement is opens (ON), UE is used One group of specific time resource carries out channel measurement, otherwise UE carry out time resource that channel measurement uses not by Limitation.As an example, then when connecting limitation arrangement unlatching, UE includes CSI-RS using nearest one The subframe of pilot tone carries out channel measurement.
In the present embodiment, each CSI, which is reported, can be based on the first CSI-RS or the 2nd CSI-RS Resource.CSI reports the mapping relations of corresponding CSI-RS by implicitly determining.For example, passing through CSI The type (cycle is aperiodic) of feedback, thereon man who brings news of appointment's frame and/or other specification.Or referred to using explicit signaling Show UE generates a special CSI based on which CSI-RS and reported.
Reporting schemes one, periodicity CSI feedback are based on the first CSI-RS, and aperiodic CSI feedback is based on Second CSI-RS.
Reporting schemes two, all set out using dynamic signaling is aperiodic when two CSI feedbacks, when eNB use it is dynamic State signaling triggers a CSI and reported, and dynamic signaling indicates which CSI-RS measurement CQI used.
Reporting schemes three, when two CSI feedbacks all try out periodic feedback, CSI report where subframe determine CSI type and the index for the CSI CSI-RSs measured.
For periodic feedback, eNB can for each one CSI report cycle of CSI-RS separate configurations and Skew.A kind of is probably to be more than another CSI in CSI cycle (such as the first CSI-RS) Cycle (such as the second CSI-RS).Further, however not excluded that CSI report cycle is (for example First CSI-RS) be another CSI report cycle (such as the second CSI-RS) integer Times.The moment each is reported, UE reports the CSI of corresponding CSI-RS.
For example：Assuming that the first CSI-RS and the second CSI-RS are expressed as P1 and P2, its Middle P1=MP2, here M>=1, while reporting offset configuration to be O1/O2.UE reports the first CSI-RS to provide Subframe where during the CSI in source is met
Subframe where reporting the CSI of the second CSI-RS is met
Wherein nfAnd nsIt is number of sub frames and timeslot number.
For two CSI-RSs CSI on the PUCCH of same subframe on give the correct time, two CSI can It is transmitted with simultaneous transmission or only one of which, another is dropped.Alternatively, a CSI is than another CSI Priority it is higher, such as when the CSI with the second CSI-RS conflicts, report the first CSI-RS provide The CSI in source.
For non-periodic feedback, eNB can trigger the CSI of any one CSI-RS, or touch simultaneously Send out the CSI of two CSI-RSs.Table 1 below provides the triggering table example triggered using 2bit, including four Triggering state.
Table 1
Configuration mode two,
In the present embodiment, a CSI process is configured related to a N-port CSI-RS.It is based on CSI-RS, can report to many two CSI, and two CSI can be expressed as the first CSI feedback (CSI1) With the second CSI feedback (CSI2).
In the present embodiment, for each CSI (CSI1 or CSI2), UE uses a day of CSI-RS Line port subset is fed back.For example, UE uses N1/N2 port in N-port CSI-RS to feed back CSI1/CSI2.So, antenna port number needs to meet N1<=N, and N2<=N.Can also N1=N ( One CSI signals use N number of port), N2<=N (the 2nd CSI signals use the subset of N number of port).
Antenna port number indicates that (N1 or N2) is also required to be indicated to UE for correct channel measurement, can With using semi-static or dynamic mode.The configuration of two ports and advice method can be the same or different. For example：Semi-static signaling (taking fixed value) can be used with N1, and N2 uses dynamic signaling and can be each Subframe dynamic change.
Reported for cycle CSI, the report cycle of first/second CSI feedback and skew can be with separate configurations. Alternatively, the report cycle of the first CSI feedback is more than the report cycle of the second CSI feedback.Further, The report cycle of one CSI feedback can be the integral multiple of the report cycle of the second CSI feedback.For aperiodic CSI is reported, and eNB can trigger a CSI1 or CSI2 and report, or triggering CSI1 and CSI2 is reported Or do not report.The triggering table example triggered using 2bit, including 4 triggering states are provided in table 2 below.
Table 2
Trigger bit (2-bits) UE behaviors
00 The first CSI feedback is reported, the second CSI feedback is not reported
01 The second CSI feedback is reported, the first CSI feedback is not reported
10 First CSI feedback and the second CSI feedback are not reported
11 First CSI feedback and the second CSI feedback CSI are reported
Each CSI feedback can be with separate configurations measurement limitation (MR).Measurement limitation be configurable to ON or Person OFF.Alternatively, the measurement of the first CSI feedback, which is limited, can be configured to OFF all the time, and the 2nd CSI The measurement limitation of feedback is configured to ON all the time.Or in contrast.This mode can be not only used for channel measurement limitation It can also be used for interferometry limitation.
PDSCH (Physical Downlink Shared Channel) can carry out N-port CSI-RS rate-matched, unless PQI states are configured with, such PDSCH rate-matcheds can be with switching at runtime between subframe.
Configuration mode three,
Configure a CSI process related to a CSI-RS.The antenna port number of the CSI-RS Do not fix, antenna port number can be with dynamic between subframe or semi-static change.
For each CSI feedback, eNB indicates CSI-RS antenna port number, while UE may also be indicated The CSI-RS configurations measured for CSI.The CSI-RS of UE measurement signaling instructions simultaneously calculates CSI.(eNB So can be to UE transparent transmissions CSI-RS1 or CSI-RS2；But from UE angle, it need not know Whether this CSI-RS of road is by figuration.UE only need to receive CSI-RS information, such as port number N1/N2, And accordingly carry out channel measurement.)
ENB also indicates that below UE all or part of parameter is used to calculate CSI, and parameter includes such as the next item down Or it is multinomial：Code book, channel and/or interferometry configuration (such as ON/OFF states), enable/failure PMI Feedback, enable/failure RI feedbacks and enable/failure CQI feedback.
It should be noted that can be with semi-static or dynamic instruction.For example for each of triggering CSI feedback DL grant (descending scheduling signaling), it includes codebook information, measurement limitation ON/OFF states, PMI/RI/CQI Enable or go enabled state.For example：
When eNB needs wave beam forming virtualization information, eNB is sent in downlink has N1 port CSI-RS1, while trigger UE in uplink feedback PMI1, and without measurement limitation.Trigger on CSI The dynamic signaling of report indicates UE using N1 port code book, goes to enable measurement limitation, and only feed back PMI1.
When eNB sends the CSI-RS2 after the wave beam forming with N2 port to UE, eNB can be with Triggering UE reports the CQI of the CSI-RS after wave beam forming.The dynamic signaling that triggering CSI is reported indicates UE Using N2 port code book, measurement limitation is enabled, and feed back PMI2/CQI2/RI2.
In the present embodiment, by combining non-precoded CSI-RS schemes and wave beam forming CSI-RS side The complexity and expense of feedback scheme in case, effectively reduction the present embodiment.
Fourth embodiment
Referring to Fig. 7, a kind of access device is shown in figure, the access device includes：
First sending module 701, for sending the first pilot signal；
First receiving module 702, for receiving the first feedback information, the first feedback information reflection described the The channel status measured in one pilot signal；
Second sending module 703, for sending the second pilot signal；
Second receiving module 704, for receiving the second feedback information, the second feedback information reflection described the The channel status of two pilot signals.
In the present embodiment, alternatively, first feedback information is used to obtain second pilot signal Wave beam forming or virtualization weights；The access device also includes：
Figuration module, for carrying out wave beam forming to second pilot signal according to first feedback information Or virtualization.
In the present embodiment, alternatively, the access device also includes：
Determining module, for according to second feedback information or anti-according to first feedback information and second Feedforward information determines the transformat of data transfer, and carries out figuration to downlink data according to the transformat.
In the present embodiment, alternatively, the transformat includes：Pre-coding matrix, time-frequency resource allocating One or more of with modulation coding mode.
In the present embodiment, alternatively, the access device also includes：
First configuration module, for configuring first pilot signal and the second pilot signal, wherein, it is described First pilot signal has N1 port, and second pilot signal has N2 port, N1, and N2 is Positive integer more than or equal to 1, N1 and N2 numerical value are identical or different.
In the present embodiment, alternatively, first feedback information includes following one or more：First Pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1 and first are lost in instruction RI1, and second The configured information of pilot signal, wherein, the first pre-coding matrix instruction PMI1 points to N1 port code N1 port pre-coding matrix in this, the first channel quality information symbol CQI1 and described first Pre-coding matrix instruction PMI1 correspondences, described first, which is lost, indicates that RI1 reflects first pre-coding matrix instruction PMI1's is lost；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
In the present embodiment, alternatively, the access device also includes：
Second configuration module, for configuring the first pilot resources and the second pilot resources, wherein, described first Pilot signal uses first pilot resources, and second pilot signal uses second pilot resources, Or
The 3rd pilot resources are configured, wherein, first pilot signal the corresponding with the second pilot signal the 3rd is led N1 port and N2 port in frequency resource；Or
The 4th pilot resources are configured, wherein, first pilot signal and the second pilot signal can use Four pilot resources, the antenna port number of the 4th pilot resources is dynamic between subframe or semi-static change.
In the present embodiment, alternatively, the access device also includes：
3rd configuration module, the feedback system for configuring the first feedback information and the second feedback information, wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
In the present embodiment, alternatively, the access device also includes：
4th configuration module, the feedback parameter for configuring first feedback information and the second feedback information, Including codebook parameter, channel and/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/ All or part of parameter in the RI feedback parameters that fail and enable/failure CQI feedback parameter；Send first anti- The feedback parameter of feedforward information and the second feedback information.
In the present embodiment, above-mentioned access device can be the access device in the embodiment shown in Fig. 4, and Fig. 4 In shown embodiment any embodiment of access device can by the access device in the present embodiment reality It is existing, repeat no more here.
In the present embodiment, by combining non-precoded CSI-RS schemes and wave beam forming CSI-RS side The complexity and expense of feedback scheme in case, effectively reduction the present embodiment.
5th embodiment
Referring to Fig. 8, a kind of access device is shown in figure, including：
First processor 800, for reading the program in first memory 820, performs following process：Pass through First transceiver 810 receives the first pilot signal；Or send the first feedback information, first feedback information Reflect the channel status measured in first pilot signal；Or receive the second pilot signal；Or send second Feedback information, second feedback information reflects the channel status of second pilot signal.
Wherein, in fig. 8, bus architecture can include any number of interconnection bus and bridge, specifically by First processor 800 represent one or more processors and first memory 820 represent memory it is each Circuit is planted to link together.Bus architecture can also be by such as ancillary equipment, voltage-stablizer and management circuit Or the like various other circuits link together, these are all it is known in the art, therefore, herein not It is described further again.EBI provides interface.First transceiver 810 can be multiple element, I.e. including transmitter and receiver, there is provided the unit for being communicated over a transmission medium with various other devices. For different user equipmenies,
First processor 800 is responsible for bus architecture and common processing, and first memory 820 can be deposited Store up the used data when performing operation of first processor 800.
Sixth embodiment
Referring to Fig. 9, a kind of terminal device is shown in figure, the terminal device includes：
3rd receiving module 901, for receiving the first pilot signal；
3rd sending module 902, for sending the first feedback information, the first feedback information reflection described the The channel status measured in one pilot signal；
4th receiving module 903, for receiving the second pilot signal；
4th sending module 904, for sending the second feedback information, the second feedback information reflection described the The channel status of two pilot signals.
In the present embodiment, alternatively, first feedback information is used to obtain second pilot signal Wave beam forming or virtualization weights.
In the present embodiment, alternatively, the terminal device also includes：
5th receiving module, for receiving according to second feedback information or according to first feedback information Downlink data after the transformat figuration determined with the second feedback information.
In the present embodiment, alternatively, the transformat includes：Pre-coding matrix, time-frequency resource allocating One or more of with modulation coding mode.
In the present embodiment, alternatively, first pilot signal has N1 port, second pilot tone Signal has N2 port, and N1, N2 is the positive integer more than or equal to 1, and N1 is identical with N2 numerical value Or it is different.
In the present embodiment, alternatively, first feedback information includes following one or more：First Pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1 and first are lost in instruction RI1, and second The configured information of pilot signal, wherein, the first pre-coding matrix instruction PMI1 points to N1 port code N1 port pre-coding matrix in this, the first channel quality information symbol CQI1 and described first Pre-coding matrix instruction PMI1 correspondences, described first, which is lost, indicates that RI1 reflects first pre-coding matrix instruction PMI1's is lost；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
In the present embodiment, alternatively, first pilot signal uses the first pilot resources, described second Pilot signal uses the second pilot resources, or
N1 port and N2 in first pilot signal the 3rd pilot resources corresponding with the second pilot signal Individual port, wherein, N1, N2 is positive integer more than or equal to 1, and N1 and N2 numerical value are identical or different； Or
First pilot signal and the second pilot signal can use the 4th pilot resources, the 4th pilot tone The antenna port number of resource is dynamic between subframe or semi-static change.
In the present embodiment, alternatively, the terminal device also includes：
6th receiving module, the feedback system for receiving first feedback information and the second feedback information, Wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
In the present embodiment, alternatively, the terminal device also includes：
7th receiving module, the feedback parameter for receiving first feedback information and the second feedback information, Including codebook parameter, channel and/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/ All or part of parameter in the RI feedback parameters that fail and enable/failure CQI feedback parameter.
In the present embodiment, above-mentioned terminal device can be the terminal device in the embodiment shown in Fig. 5, and Fig. 5 In shown embodiment any embodiment of terminal device can by the terminal device in the present embodiment reality It is existing, repeat no more here.
In the present embodiment, by combining non-precoded CSI-RS schemes and wave beam forming CSI-RS side The complexity and expense of feedback scheme in case, effectively reduction the present embodiment.
7th embodiment
Referring to Figure 10, a kind of terminal device is shown in figure, including：
Second processor 1000, for reading the program in second memory 1020, performs following process：It is logical Cross the second transceiver 1010 and receive the first pilot signal；Or send the first feedback information, first feedback letter The channel status measured in breath reflection first pilot signal；Or receive the second pilot signal；Or send the Two feedback informations, second feedback information reflects the channel status of second pilot signal.
Wherein, in Fig. 10, bus architecture can include any number of interconnection bus and bridge, specifically by The memory that the one or more processors and second memory 1020 that second processor 1000 is represented are represented Various circuits are linked together.Bus architecture can also be by such as ancillary equipment, voltage-stablizer and power management electricity Various other circuits on road or the like are linked together, and these are all it is known in the art, therefore, herein No longer it is described further.EBI provides interface.Second transceiver 1010 can be multiple members Part, i.e., including transmitter and receiver, there is provided the list for being communicated over a transmission medium with various other devices Member.For different user equipmenies, user interface 1030, which can also be external to be inscribed, needs connecing for equipment Mouthful, the equipment of connection includes but is not limited to keypad, display, loudspeaker, microphone, control stick etc..
Second processor 1000 is responsible for bus architecture and common processing, and second memory 1020 can be with Store the used data when performing operation of second processor 1000.
In the present embodiment, above-mentioned terminal device can be the terminal device in the embodiment shown in Fig. 5, and Fig. 5 In shown embodiment any embodiment of terminal device can by the terminal device in the present embodiment reality It is existing, repeat no more here.
In the present embodiment, by combining non-precoded CSI-RS schemes and wave beam forming CSI-RS side The complexity and expense of feedback scheme in case, effectively reduction the present embodiment.
8th embodiment
Referring to Figure 11, a kind of acquisition system of information feedback is shown in figure, including：
Access device 1101, for sending the first pilot signal；
The access device 1101, is additionally operable to receive the first feedback information, first feedback information reflects institute State the channel status measured in the first pilot signal；
The access device 1101, is additionally operable to send the second pilot signal；
The access device 1101, is additionally operable to receive the second feedback information, second feedback information reflects institute State the channel status of the second pilot signal；
Terminal device 1102, for receiving the first pilot signal；
The terminal device 1102, is additionally operable to send the first feedback information, first feedback information reflects institute State the channel status measured in the first pilot signal；
The terminal device 1102, is additionally operable to receive the second pilot signal；
The terminal device 1102, is additionally operable to send the second feedback information, second feedback information reflects institute State the channel status of the second pilot signal.
In the present embodiment, by combining non-precoded CSI-RS schemes and wave beam forming CSI-RS side The complexity and expense of feedback scheme in case, effectively reduction the present embodiment.
It should be understood that " one embodiment " or " embodiment " that specification is mentioned in the whole text means have with embodiment During special characteristic, structure or the characteristic of pass are included at least one embodiment of the present invention.Therefore, whole " in one embodiment " or " in one embodiment " that specification occurs everywhere not necessarily refers to identical implementation Example.In addition, these specific feature, structure or characteristics can be combined at one or many in any suitable manner In individual embodiment.
In various embodiments of the present invention, it should be appreciated that the size of the sequence number of above-mentioned each process is not meant to The priority of execution sequence, the execution sequence of each process should be determined with its function and internal logic, without tackling this The implementation process of inventive embodiments constitutes any limit
In addition, the terms " system " and " network " are often used interchangeably herein.
It should be understood that the terms "and/or", only a kind of incidence relation for describing affiliated partner, is represented There may be three kinds of relations, for example, A and/or B, can be represented：Individualism A, at the same exist A and These three situations of B, individualism B.In addition, character "/" herein, typicallying represent forward-backward correlation object is A kind of relation of "or".
In embodiment provided herein, it should be appreciated that " B " corresponding with A represents that B is associated with A, B can be determined according to A.It is also to be understood that determine that B is not meant to determine B only according to A according to A, B can also be determined according to A and/or other information.
, can be with several embodiments provided herein, it should be understood that disclosed method and apparatus Realize by another way.For example, device embodiment described above is only schematical, for example, The division of the unit, only a kind of division of logic function, can there is other division side when actually realizing Formula, such as multiple units or component can combine or be desirably integrated into another system, or some features can To ignore, or do not perform.It is another, shown or discussed coupling or direct-coupling or logical each other Letter connection can be by some interfaces, the INDIRECT COUPLING or communication connection of device or unit, can be it is electrical, Machinery or other forms.
In addition, each functional unit in each embodiment of the invention can be integrated in a processing unit, Can also be that the independent physics of unit includes, can also two or more units be integrated in a unit In.Above-mentioned integrated unit can both be realized in the form of hardware, it would however also be possible to employ hardware adds software function The form of unit is realized.
The above-mentioned integrated unit realized in the form of SFU software functional unit, can be stored in a computer can Read in storage medium.Above-mentioned SFU software functional unit is stored in a storage medium, including some instructions are used To cause a computer equipment (can be personal computer, server, or network equipment etc.) to perform The part steps of receiving/transmission method described in each embodiment of the invention.And foregoing storage medium includes：USB flash disk, Mobile hard disk, read-only storage (Read-Only Memory, abbreviation ROM), random access memory (Random Access Memory, abbreviation RAM), magnetic disc or CD etc. are various can be with store program codes Medium.
Above-described is the preferred embodiment of the present invention, it should be pointed out that for the ordinary people of the art For member, some improvements and modifications can also be made under the premise of principle of the present invention is not departed from, these Improvements and modifications are also within the scope of the present invention.

Claims (37)

1. a kind of acquisition methods of information feedback, it is characterised in that methods described includes：
Send the first pilot signal；
The first feedback information is received, first feedback information reflects the letter measured in first pilot signal Road state；
Send the second pilot signal；
The second feedback information is received, second feedback information reflects the channel status of second pilot signal.
2. according to the method described in claim 1, it is characterised in that
Methods described also includes：
Wave beam forming or virtualization are carried out to second pilot signal according to first feedback information, it is described First feedback information is used for the wave beam forming for obtaining second pilot signal or virtualization weights；
The second pilot signal of the transmission, including：
Send the second pilot signal after wave beam forming or virtualization.
3. according to the method described in claim 1, it is characterised in that methods described also includes：
Data are determined according to second feedback information or according to first feedback information and the second feedback information The transformat of transmission, and figuration is carried out to downlink data according to the transformat.
4. method according to claim 3, it is characterised in that the transformat includes：Precoding One or more of matrix, time-frequency resource allocating and modulation coding mode.
5. according to the method described in claim 1, it is characterised in that methods described also includes：
First pilot signal and the second pilot signal are configured, wherein, first pilot signal has N1 Individual port, second pilot signal has N2 port, N1, and N2 is the positive integer more than or equal to 1, N1 and N2 numerical value is identical or different.
6. method according to claim 5, it is characterised in that first feedback information includes as follows One or more：First pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1, first It is lost and indicates RI1 and the second pilot signal configured information, wherein, the first pre-coding matrix instruction PMI1 Point to N1 port pre-coding matrix in N1 port code book, the first channel quality information symbol CQI1 is corresponding with the first pre-coding matrix instruction PMI1, and described first is lost instruction RI1 reflections described the One pre-coding matrix instruction PMI1's is lost；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
7. method according to claim 5, it is characterised in that methods described also includes：
The first pilot resources and the second pilot resources are configured, wherein, first pilot signal uses described the One pilot resources, second pilot signal uses second pilot resources, or
The 3rd pilot resources are configured, wherein, first pilot signal the corresponding with the second pilot signal the 3rd is led N1 port and N2 port in frequency resource；Or
The 4th pilot resources are configured, wherein, first pilot signal and the second pilot signal can use Four pilot resources, the antenna port number of the 4th pilot resources is dynamic between subframe or semi-static change.
8. according to the method described in claim 1, it is characterised in that methods described also includes：
The feedback system of the first feedback information and the second feedback information is configured, wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
9. according to the method described in claim 1, it is characterised in that methods described also includes：
Configure the feedback parameter of first feedback information and the second feedback information, including codebook parameter, channel And/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/failure RI feedback parameters and make All or part of parameter in energy/failure CQI feedback parameter；
Send the feedback parameter of the first feedback information and the second feedback information.
10. a kind of acquisition methods of information feedback, it is characterised in that methods described includes：
Receive the first pilot signal；
The first feedback information is sent, first feedback information reflects the letter measured in first pilot signal Road state；
Receive the second pilot signal；
The second feedback information is sent, second feedback information reflects the channel status of second pilot signal.
11. method according to claim 10, it is characterised in that first feedback information is used to obtain Take the wave beam forming or virtualization weights of second pilot signal.
12. method according to claim 10, it is characterised in that methods described also includes：
Receive according to second feedback information or determined according to first feedback information and the second feedback information Transformat figuration after downlink data.
13. method according to claim 12, it is characterised in that the transformat includes：Prelist One or more of code matrix, time-frequency resource allocating and modulation coding mode.
14. method according to claim 10, it is characterised in that first pilot signal has N1 Individual port, second pilot signal has N2 port, N1, and N2 is the positive integer more than or equal to 1, N1 and N2 numerical value is identical or different.
15. method according to claim 14, it is characterised in that first feedback information is included such as The next item down is multinomial：First pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1 and the One is lost in instruction RI1, the configured information of the second pilot signal, wherein, first pre-coding matrix instruction PMI1 points to N1 port pre-coding matrix in N1 port code book, first channel quality Information symbol CQI1 is corresponding with the first pre-coding matrix instruction PMI1, and described first, which is lost, indicates RI1 reflections The first pre-coding matrix instruction PMI1's is lost；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
16. method according to claim 14, it is characterised in that
First pilot signal uses the first pilot resources, and second pilot signal is provided using the second pilot tone Source, or
N1 port and N2 in first pilot signal the 3rd pilot resources corresponding with the second pilot signal Individual port；Or
First pilot signal and the second pilot signal can use the 4th pilot resources, the 4th pilot tone The antenna port number of resource is dynamic between subframe or semi-static change.
17. method according to claim 10, it is characterised in that methods described also includes：
The feedback system of first feedback information and the second feedback information is received, wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
18. method according to claim 10, it is characterised in that methods described also includes：
Receive the feedback parameter of first feedback information and the second feedback information, including codebook parameter, channel And/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/failure RI feedback parameters and make All or part of parameter in energy/failure CQI feedback parameter.
19. a kind of access device, it is characterised in that the access device includes：
First sending module, for sending the first pilot signal；
First receiving module, for receiving the first feedback information, the first feedback information reflection described first The channel status measured in pilot signal；
Second sending module, for sending the second pilot signal；
Second receiving module, for receiving the second feedback information, the second feedback information reflection described second The channel status of pilot signal.
20. access device according to claim 19, it is characterised in that first feedback information is used In the wave beam forming or virtualization weights that obtain second pilot signal；
The access device also includes：
Figuration module, for carrying out wave beam forming to second pilot signal according to first feedback information Or virtualization.
21. access device according to claim 19, it is characterised in that the access device also includes：
Determining module, for according to second feedback information or anti-according to first feedback information and second Feedforward information determines the transformat of data transfer, and carries out figuration to downlink data according to the transformat.
22. access device according to claim 21, it is characterised in that the transformat includes： One or more of pre-coding matrix, time-frequency resource allocating and modulation coding mode.
23. access device according to claim 19, it is characterised in that the access device also includes：
First configuration module, for configuring first pilot signal and the second pilot signal, wherein, it is described First pilot signal has N1 port, and second pilot signal has N2 port, N1, and N2 is Positive integer more than or equal to 1, N1 and N2 numerical value are identical or different.
24. access device according to claim 23, it is characterised in that the first feedback information bag Include following one or more：First pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1 It is lost with first in instruction RI1, the configured information of the second pilot signal, wherein, first pre-coding matrix Indicate that PMI1 points to N1 port pre-coding matrix in N1 port code book, first channel Quality information symbol CQI1 is corresponding with the first pre-coding matrix instruction PMI1, and described first, which is lost, indicates RI1 Reflect being lost for the first pre-coding matrix instruction PMI1；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
25. access device according to claim 23, it is characterised in that the access device also includes：
Second configuration module, for configuring the first pilot resources and the second pilot resources, wherein, described first Pilot signal uses first pilot resources, and second pilot signal uses second pilot resources, Or
The 3rd pilot resources are configured, wherein, first pilot signal the corresponding with the second pilot signal the 3rd is led N1 port and N2 port in frequency resource；Or
The 4th pilot resources are configured, wherein, first pilot signal and the second pilot signal can use Four pilot resources, the antenna port number of the 4th pilot resources is dynamic between subframe or semi-static change.
26. access device according to claim 19, it is characterised in that the access device also includes：
3rd configuration module, the feedback system for configuring the first feedback information and the second feedback information, wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
27. access device according to claim 19, it is characterised in that the access device also includes：
4th configuration module, the feedback parameter for configuring first feedback information and the second feedback information, Including codebook parameter, channel and/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/ All or part of parameter in the RI feedback parameters that fail and enable/failure CQI feedback parameter；
Send the feedback parameter of the first feedback information and the second feedback information.
28. a kind of terminal device, it is characterised in that the terminal device includes：
3rd receiving module, for receiving the first pilot signal；
3rd sending module, for sending the first feedback information, the first feedback information reflection described first The channel status measured in pilot signal；
4th receiving module, for receiving the second pilot signal；
4th sending module, for sending the second feedback information, the second feedback information reflection described second The channel status of pilot signal.
29. terminal device according to claim 28, it is characterised in that first feedback information is used In the wave beam forming or virtualization weights that obtain second pilot signal.
30. terminal device according to claim 28, it is characterised in that the terminal device also includes：
5th receiving module, for receiving according to second feedback information or according to first feedback information Downlink data after the transformat figuration determined with the second feedback information.
31. terminal device according to claim 30, it is characterised in that the transformat includes： One or more of pre-coding matrix, time-frequency resource allocating and modulation coding mode.
32. terminal device according to claim 28, it is characterised in that the first pilot signal tool There is N1 port, second pilot signal has N2 port, N1, and N2 is more than or equal to 1 just Integer, N1 and N2 numerical value are identical or different.
33. terminal device according to claim 32, it is characterised in that the first feedback information bag Include following one or more：First pre-coding matrix instruction PMI1, the first channel quality information symbol CQI1 It is lost with first in instruction RI1, the configured information of the second pilot signal, wherein, first pre-coding matrix Indicate that PMI1 points to N1 port pre-coding matrix in N1 port code book, first channel Quality information symbol CQI1 is corresponding with the first pre-coding matrix instruction PMI1, and described first, which is lost, indicates RI1 Reflect being lost for the first pre-coding matrix instruction PMI1；
Second feedback information includes following one or more：Second pre-coding matrix instruction PMI2, Two channel quality informations symbol CQI2 and second, which is lost, indicates RI2, wherein, second pre-coding matrix instruction PMI2 points to N2 port pre-coding matrix in N2 port code book, the second channel quality Information symbol CQI2 is corresponding with the second pre-coding matrix instruction PMI2, and described second, which is lost, indicates RI2 reflections The second pre-coding matrix instruction PMI2's is lost.
34. terminal device according to claim 32, it is characterised in that
First pilot signal uses the first pilot resources, and second pilot signal is provided using the second pilot tone Source, or
N1 port and N2 in first pilot signal the 3rd pilot resources corresponding with the second pilot signal Individual port；Or
First pilot signal and the second pilot signal can use the 4th pilot resources, the 4th pilot tone The antenna port number of resource is dynamic between subframe or semi-static change.
35. terminal device according to claim 28, it is characterised in that the terminal device also includes：
6th receiving module, the feedback system for receiving first feedback information and the second feedback information, Wherein,
First feedback information and the second feedback information are periodic feedback, first feedback information and second The report cycle of feedback information and report skew combine or separate configurations；Or
First feedback information and the second feedback information are non-periodic feedback, and described the is triggered by access device One feedback information and/or the second feedback information are reported；Or
First feedback information is periodic feedback, and second feedback information is non-periodic feedback, aperiodic Feedback is triggered by access device；Or
First feedback information is non-periodic feedback, and second feedback information is periodic feedback, aperiodic Feedback is triggered by the access device.
36. terminal device according to claim 28, it is characterised in that the terminal device also includes：
7th receiving module, the feedback parameter for receiving first feedback information and the second feedback information, Including codebook parameter, channel and/or interferometry configuration parameter, enable/failure PMI feedback parameters, enable/ All or part of parameter in the RI feedback parameters that fail and enable/failure CQI feedback parameter.
37. a kind of acquisition system of information feedback, it is characterised in that including：
Access device, for sending the first pilot signal；
The access device, is additionally operable to receive the first feedback information, first feedback information reflection described the The channel status measured in one pilot signal；
The access device, is additionally operable to send the second pilot signal；
The access device, is additionally operable to receive the second feedback information, second feedback information reflection described the The channel status of two pilot signals；
Terminal device, for receiving the first pilot signal；
The terminal device, is additionally operable to send the first feedback information, first feedback information reflection described the The channel status measured in one pilot signal；
The terminal device, is additionally operable to receive the second pilot signal；
The terminal device, is additionally operable to send the second feedback information, second feedback information reflection described the The channel status of two pilot signals.
CN201610197499.9A 2016-03-31 2016-03-31 Acquisition methods, relevant device and the system of information feedback Pending CN107294582A (en)

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CN110149129B (en) * 2018-02-11 2022-02-01 中兴通讯股份有限公司 Method, device and equipment for determining beamforming weight
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