CN106899378A - The determination method and device of channel status information reports example - Google Patents
The determination method and device of channel status information reports example Download PDFInfo
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- CN106899378A CN106899378A CN201510956330.2A CN201510956330A CN106899378A CN 106899378 A CN106899378 A CN 106899378A CN 201510956330 A CN201510956330 A CN 201510956330A CN 106899378 A CN106899378 A CN 106899378A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
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- 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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
- H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
- H04L1/0618—Space-time coding
- H04L1/0675—Space-time coding characterised by the signaling
- H04L1/0693—Partial feedback, e.g. partial channel state information [CSI]
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Abstract
The invention provides a kind of determination method and device of channel status information reports example, wherein, methods described includes：The configuration signal that base station issues is received, and determines that measurement pilot resources set R, measurement pilot resources set R are included according to configuration-direct：K covers pilot tone, and K is more than 1 and is positive integer, at least includes in K set pilot tones：Antenna port number is 1 pilot tone of pilot tone and antenna port number more than 1；S set pilot tones in selection K set pilot tones, and feed back the configured information of S set pilot tones and the CSI information of pilot measurement is covered based on S, S belongs to set [1, K]；The corresponding antenna port number N s of pilot tone is covered according to S to determine to feed back the number N of the corresponding report instance of CSI information on PUCCH, N determines at least through one of in the following manner：Mode one：When Ns is equal to 1, N is m, and when Ns is more than 1, N is m+1；Mode two：When Ns is more than or equal to 1, N is m, and m is positive integer.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of determination method and device of channel status information reports example.
Background technology
In wireless communication system, transmitting terminal and receiving terminal take the mode of spatial reuse to obtain speed higher using many antennas.Relative to general method for spacial multiplex, a kind of enhanced technology is that receiving terminal feeds back to transmitting terminal channel information, and transmitting terminal, using transmitting precoding technique, can be greatly enhanced transmission performance according to the channel information for obtaining.In for single user multiple-input and multiple-output (Single User Multi-input Multi-output, referred to as SU-MIMO), directly precoding is carried out using channel characteristics Vector Message；For in multi-user's multiple-input and multiple-output (Multi-User Multi-input Multi-output, referred to as MU-MIMO), it is necessary to more accurately channel information.Some are described below with base station side channel condition information (channel state information, referred to as CSI, including channel (channel) partly to interference (port) part) acquisition, end side CSI quantify the related substance of feedback.Compared to time division duplex (Time Division Dual, referred to as TDD system can then reciprocity obtains down channel matrix by sending SRS measurements up channel, FDD (Frequency Division Dual, referred to as FDD) system does not obtain accurate CSI information same frequency range is more difficult by this way due to up-downgoing.FDD system presently, there are following several typical CSI feedback scenes and corresponding feedback technique；If it is considered that the antenna dimension supported is less, less than or equal to 8 antennas, channel measurement pilot frequency and CSI feedback expense are commonly considered as acceptable, for simplicity employ measurement and the CSI feedback of full dimension.For example in the LTE versions of early stage FDD mainly considers this scene, using the pilot tone and CSI feedback of full dimension, feedback is implicit feedback by the way of, first, base station sends a set of channel measurement pilot frequency to terminal, and terminal carries out channel measurement based on the pilot tone and CSI quantifies feedback.The 2 port channels measurement pilot resources that can configure of measurement pilot resources index (channel state information Resource Index, referred to as CSI-RS, be also frequently referred to as BI, beam index), 4 port CSI-RS, 8 port CSI-RS；Terminal detects these pilot tones, estimates channel matrix and quantifies for channel information；The content of the CSI after in general quantifying mainly includes (RI/PMI/CQI)：Channel quality indication (CQI) information (Channel quality indication, referred to as CQI), precoding matrix indicators (Precoding Matrix Indicator, referred to as PMI) and order designator (Rank Indicator, referred to as RI).CQI is an index for weighing down channel quality quality.CQI can be understood as signal to noise ratio (Signal to Interference plus Noise Ratio, referred to as SINR) a kind of quantization, CQI is represented with 0~15 integer value in 36-213 agreements, different CQI grades are represented respectively, different CQI correspond to respective modulation system and encoder bit rate (Modulation and Coding Scheme, referred to as MCS).RI is used to describe spaceIt is independentThe number of channel, the order of respective channels response matrix., it is necessary to UE feedback RI information, need not feed back RI information under other patterns under space multiplexing mode.The sum of ranks number of plies correspondence of channel matrix.PMI feedbacks are optimal precoding informations, are fed back based on index, and the code word of the feature of present channel is most matched in the code book for indicating agreement.
CSI feedback pattern：In order to feed back CQI/PMI/RI, various CSI feedback patterns (feedback mode) are also defined in LTE, refer to the combination of CSI (CQI/PMI/RI) feedack, periodic feedback and non-periodic feedback are included including M subband feedback of subband feedback and broadband feedback or selection etc..Wherein, non-periodic feedback physically row shared channel (Physical Uplink Shared Channel, referred to as PUSCH) it is inner transmission (such asFollowing table oneIt is shown), including following pattern：
Table one
Table oneThe x values in Mode x-y in 1 are 1,2,3 to represent three kinds of feedback characteristics of CQI respectively：The subband CQI of broadband CQI, UE selection, the subband CQI of high-rise configuration；The value of y includes 0,1,2, wherein 0 represents no PMI, 1 generationTable 1Individual (broadband) PMI, 2 represent comprising multiple PMI (broadband and one or more subbands)；
Periodic feedback pattern refers in the physically pattern of Uplink Control Channel (Physical Uplink Control Channel, referred to as PUCCH) inner feedback periodically, such asFollowing table twoShown, it includes following pattern：
Table two
X values in wherein Mode x-y are 1,2 to represent 2 kinds of feedback characteristics of CQI respectively：The subband CQI of broadband CQI, UE selection；The value of y includes 0,1, wherein 0 represents no PMI, 1 represents comprising PMI；Mode 1-1 need the situation and the situation with double PMI code books of consideration list PMI code books, are divided into multiple subpatterns；The Mode 1-1 of general mode：Feedback content includes RI feedbacks, broadband (WB, wideband) PMI i feedbacks, broadband CQI feedback；It is divided into two reporting type (Report Type)；First reporting type is RI, and second reporting type is broadband (WB, wideband) PMI i feedbacks and broadband CQI feedback；Mode 1-1 subpatterns 1 during double PMI：One code word needs 2 PMI i1 and i2 to indicate collectively, wherein i1 is that broadband feedback feeds back when long, and i2 can be subband feedback in short-term；This subpattern includes 2 kinds of report reporting type：RI/PMI i1 combined codings, and broadband PMI i2 and broadband CQI.
Mode 1-1 subpatterns 2 during double PMI：Feedback content includes RI feedbacks, broadband (WB, wideband) PMI i1, the feedback of the PMI i2 in broadband, broadband CQI feedback；It is divided into two reporting type；First reporting type is RI, and second reporting type is that broadband (WB, wideband) PMI i1/i2 combined codings feed back and broadband CQI feedback；Here i1 and i2 have carried out the sample process reduction expense of some code book indexes；
Mode 2-1 are also required to consider the situation and the situation with double PMI code books of single PMI code books, a kind of situation need not introduce precoder type index (Precoder Type Indicator, referred to as PTI), another situation introduces PTI instructions, and the precoding type of feedback can be flexibly switched in time domain；
General mode Mode 2-1：Feedback content includes RI feedbacks, broadband (WB, wideband) PMI, son PMI feedbacks wide；It is divided into 3 reporting type；First reporting type is RI, and second reporting type is that broadband (WB, wideband) PMI feeds back and broadband CQI feedback；3rd reporting type is the CQI of subband；
Mode 2-1 during double PMI：Feedback content includes RI feedbacks, broadband (WB, wideband) PMI i1, the feedback of the PMI i2 in broadband, broadband CQI feedback；It is divided into 4 reporting type；First reporting type is RI/PTI, and second reporting type is broadband (WB, wideband) PMI i1, and the 3rd reporting type is the PMI i2 and broadband CQI feedback in broadband；4th reporting type is the i2 and CQI feedback of subband；Here PTI is used for the selection for indicating reporting type group below to report；PTI=0 and 1 has corresponded to the RI/PTI and has fed back in during next RI/PTI feedbacks are reported respectively, the two kinds of different reporting type group for reporting；
As technology develops, after number of antennas increases and considers 3D MIMO applications, more complicated measurement and feedback technique is employed；For example, base station sends N set pilot tones carries out channel condition information measurement, N to terminal>=2 terminals select a set of pilot tone therein, and report CRI (CSI-RS channel measurement pilot frequency resource indexs, be also frequently referred to as BI) to base station, and the channel measurement pilot frequency that terminal is based on selection reports RI/PMI/CQI；This mode can select optimal CSI-RS resource to measure (can be understood as a part for feedback of channel information), and in conjunction with traditional CSI feedback, base station can obtain total channel information by CRI and traditional CSI feedback.
Figure 1It is the signal of the CSI feedback in the prior art based on measurement pilot tone selectionFigure,As schemed 1Shown, it is exactly vertical sector Intel Virtualization Technology to embody a kind of typical case's application, and base station generates the wave beam of different directions using different precodings, covers different vertical direction；UE selects optimal precoded pilot (vertical beam), and then carries out horizontal dimensions CSI feedback based on the precoded pilot.Base station be based on precoded pilot (vertical beam) the selection information of terminal report and horizontal dimensions CSI feedback, with reference to the weights that precoded pilot is used, obtain than more complete channel condition information.
Figure 2It is two kinds of topological port virtualizations of the same antenna in the prior art and the signal of wave beam sending methodFigure,Figure 2In, terminal configuration K set pilot tones are given in base station, and it is N often to cover pilot frequency port numberk, wave beam/pilot resources selection and CSI measurement feedbacks are carried out for terminal, a kind of simple method is limitation NkIt is equal, but in fact, NkEqual this limitation of value it is excessively dumb, base station can not use various different port virtualization modes, such as one following antenna topology be difficult to support the selection between two kinds of virtualization modes by existing mode.
Figure 2Middle left side represents a system of 16Tx (4 rows 2 are arranged), virtualization matrix P1 is 8 dimension matrixes, it is 4 dimensions that pilot tone dimensionality reduction degree port number is often covered after virtualization, and two sets of such pilot tones are generated using two such matrixes P1 (a), and P1 (b)；For terminal measurement；Right side represents same 4 row 2 row 16Tx systems, virtualization matrix P2 is 4 dimension matrixes, it is 8 dimensions that pilot tone dimensionality reduction degree port number is often covered after virtualization, using 4 such matrixes P2 (a), P2 (b), P2 (c), P2 (d) generate 4 sets of such pilot tones；If limitation Nk must it is equal if can lose gain that switching is dynamically selected between both above virtualization mode.
Also there is such a technical scheme in prior art：Terminal configuration K set pilot tones are given in base station, and it is N often to cover pilot frequency port numberkIf allowing Nk; because different number of antennas is different and different antennae number; it is likely to occur when UE feeds back and feedback model entanglement problem occurs; its main cause is the configuration that base station only has a set of feedback model (reporting mode) and corresponding instance (reporting instance), it is impossible to while being adapted to Nk=1 and Nk>1 situation.
In for correlation technique, when K set pilot tones have antenna port number Nk=1 and Nk>During 1 configuration, the report instance of terminal does not adapt to the problem of above-mentioned two situations, not yet proposes effective technical scheme.
The content of the invention
In order to solve the above-mentioned technical problem, the embodiment of the invention provides a kind of determination method and device of channel status information reports example.
According to an aspect of the invention, there is provided a kind of determination method of channel status information reports example, including：The configuration signal that base station issues is received, and measurement pilot resources set R is determined according to the configuration-direct, wherein, the measurement pilot resources set R is included：K covers pilot tone, and K is more than 1 and is positive integer, at least includes in the K sets pilot tone：Antenna port number is 1 pilot tone of pilot tone and antenna port number more than 1；The S set pilot tones in the K sets pilot tone are selected, and is fed back the configured information of the S sets pilot tone and the CSI information of pilot measurement is covered based on S, wherein, S belongs to set [1, K]；The corresponding antenna port number N s of pilot tone is covered according to S to determine to feed back the number N of the corresponding report instance of the CSI information on physical uplink control channel PUCCH, N determines at least through one of in the following manner：Mode one：When Ns is equal to 1, N is m, and when Ns is more than 1, N is m+1；Mode two：When Ns is more than or equal to 1, N is m, and wherein m is positive integer.
Preferably, when employing mode one determines the N, first set is the subset of second set, wherein, first set is the set of m report instance when Ns is equal to 1, and second set is the m+1 set of report instance when Ns is more than 1.
Preferably, when employing mode two determines the N, and Ns equal to 1, before the CSI information of feedback S set pilot measurements, also include：The acquisition modes of the order designator RI and precoding matrix indicators PMI in the CSI information are obtained with base station agreement.
Preferably, RI and PMI is obtained at least through one of in the following manner：Fixed RI and/or PMI is reported with base station agreement；Indexed equal to beam index (Beam Index, referred to as BI) with base station agreement RI indexes, and/or arrange PMI indexes equal to BI indexes with base station；Channel quality indication (CQI) information CQI indexes are equal to base station agreement RI indexes, and/or arrange PMI indexes equal to CQI indexes with base station.
Preferably, when employing mode two determines the N, methods described also includes：If the corresponding Ns of S set pilot tones of selection is equal to 1, when Ns is more than 1 on the feedback position of feedback RI, feeds back CQI information；And/or when Ns is more than 1 on the feedback position of feedback RI, feedback channel measurement pilot resources index CRI information；And/or abandon feedback on the feedback position of feedback RI when Ns is more than 1.
According to another aspect of the present invention, a kind of quantization method of channel condition information is additionally provided, including：The code book C used with base station agreed upon channel status information quantization, wherein, the code book C includes：Multiple sub-codebooks set C (r), set C (r) includes the order r of multiple channel matrixes, and from set A=[1, Xr], Xr is positive integer to order r values；
Channel condition information is quantified using the code book C, when order r is not belonging to set Q, the size according to the code book C determines the feedback overhead of PMI, and the feedback overhead is fed back into base station；When order r belongs to set Q, the PMI of the overhead size O bit for making an appointment is fed back to base station, wherein, O is the integer more than or equal to 1, and set Q is the subset of A.
Preferably, the m values include：1、2.
In another aspect of the present invention, a kind of determining device of channel status information reports example is additionally provided, including：Receiver module, for receiving the configuration signal that base station issues, and determines measurement pilot resources set R according to the configuration-direct, wherein, the measurement pilot resources set R is included：K covers pilot tone, and K is more than 1 and is positive integer, at least includes in the K sets pilot tone：A set of antenna port number is 1 pilot tone of pilot tone and a set of antenna port number more than 1；Selecting module, for selecting the S in the K sets pilot tone to cover pilot tone；Feedback module, for feeding back the configured information of S set pilot tone and covering based on S the CSI information of pilot measurement；Determining module, determines to feed back the number N of the corresponding report instance of the CSI information on physical uplink control channel PUCCH for covering the corresponding antenna port number N s of pilot tone according to S, and the N determines at least through one of in the following manner：Mode one：When Ns is equal to 1, N is m, and when Ns is more than 1, N is m+1；Mode two：When Ns is more than or equal to 1, N is m, and wherein m is positive integer.
Preferably, the determining module, is additionally operable to when employing mode one determines the N, and first set is the subset of second set, wherein, first set is the set of m report instance when Ns is equal to 1, and second set is the m+1 set of report instance when Ns is more than 1.
Preferably, described device also includes when employing mode two determines the N, and Ns equal to 1：Provisioning modules, the acquisition modes for obtaining order designator RI and precoding matrix indicators PMI in the CSI information with base station agreement.
Preferably, the provisioning modules, for reporting fixed RI and/or PMI with base station agreement；It is additionally operable to arrange RI indexes equal to BI indexes with base station, and/or arranges PMI indexes equal to BI indexes with base station；It is additionally operable to be equal to channel quality indication (CQI) information CQI indexes with base station agreement RI indexes, and/or arranges PMI indexes equal to CQI indexes with base station.
Preferably, the feedback module, including：First feedback unit, for when employing mode two determines that the corresponding Ns of the S set pilot tones of the N and selection is equal to 1, being fed back when Ns is more than 1 on the feedback position of RI, feeds back CQI information；Second feedback unit, for when employing mode two determines that the corresponding Ns of the S set pilot tones of the N and selection is equal to 1, being fed back when Ns is more than 1 on the feedback position of RI, feedback channel measurement pilot resources index CRI information；3rd feedback unit, for when employing mode two determines that the corresponding Ns of the S set pilot tones of the N and selection is equal to 1, when Ns is more than 1 on the feedback position of feedback RI, abandoning feedback.
By the embodiment of the present invention, the number that the corresponding antenna port number N s of pilot tone determines report instance is covered by according to the S for selecting, enter the problem obscured without report instance, solved in correlation technique, there is antenna port number N when K covers pilot tonek=1 and Nk>During 1 configuration, the report instance of terminal does not adapt to the problem of above-mentioned two situations, there is provided in Nk=1 and Nk>Two kinds of settling modes of solution report instance when 1, it also avoid the chaotic situation of end side feedback model.
Brief description of the drawings
Described hereinAccompanying drawingFor providing a further understanding of the present invention, the part of the application is constituted, schematic description and description of the invention is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In accompanying drawing：
Figure 1It is the signal of the CSI feedback in the prior art based on measurement pilot tone selectionFigure；
Figure 2It is two kinds of topological port virtualizations of the same antenna in the prior art and the signal of wave beam sending methodFigure；
Figure 3It is the flow of the determination method of channel status information reports example according to the embodiment of the present inventionFigure；
Figure 4It is the structural frames of the determining device of channel status information reports example according to the embodiment of the present inventionFigure；
Figure 5It is another structural frames of the determining device of channel status information reports example according to the embodiment of the present inventionFigure；
Figure 6It is the structural frames of the feedback module 44 of the determining device of channel status information reports example according to the embodiment of the present inventionFigure；
Figure 7It is the flow of the quantization for believing channel condition information according to the embodiment of the present inventionFigure；
Figure 8It is the candidate of the CSI-RS position according to the preferred embodiment of the present invention 1FigureSample is illustratedFigure。
Specific embodiment
Below with reference toAccompanying drawingAnd describe the present invention in detail in conjunction with the embodiments.It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can be mutually combined.
Other features and advantages of the present invention will illustrate in the following description, also, partly become apparent from specification, or be understood by implementing the present invention.The purpose of the present invention and other advantages can by the specification, claims write andIn accompanying drawingSpecifically noted structure is realized and obtained.
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present inventionAccompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only the embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made should all belong to the scope of protection of the invention.
In embodiments of the present invention, a kind of determination method of channel status information reports example is additionally provided,Figure 3It is the flow of the determination method of channel status information reports example according to the embodiment of the present inventionFigure,As schemed 3It is shown, comprise the following steps：
Step S302, receives the configuration signal that base station issues, and determines measurement pilot resources set R according to above-mentioned configuration-direct, wherein, above-mentioned measurement pilot resources set R is included：K covers pilot tone, and K is more than 1 and is positive integer, at least includes in above-mentioned K sets pilot tone：A set of antenna port number is 1 pilot tone of pilot tone and a set of antenna port number more than 1；
Step S304, selects the S set pilot tones in above-mentioned K sets pilot tone, and feeds back the configured information of above-mentioned S sets pilot tone and the CSI information of pilot measurement is covered based on S, wherein, S belongs to set [1, K]；
Step S306, covers the corresponding antenna port number N s of pilot tone and determines to feed back the number N of the corresponding report instance of above-mentioned CSI information on PUCCH according to S, and N determines at least through one of in the following manner：Mode one：When Ns is equal to 1, N is m, and when Ns is more than 1, N is m+1；Mode two：When Ns is more than or equal to 1, N is m, and wherein m is positive integer.
By above-mentioned each step, terminal can determine the number of report instance according to the corresponding antenna port number N s of S set pilot tones for selecting, and then in end side be not in the problem that report instance is obscured, in solving correlation technique, when K set pilot tones have antenna port number Nk=1 and Nk>During 1 configuration, the report instance of terminal does not adapt to the problem of above-mentioned two situations, there is provided in Nk=1 and Nk>Two kinds of settling modes of solution report instance when 1, it also avoid the chaotic situation of end side feedback model.
Using above-mentioned technical proposal provided in an embodiment of the present invention, additionally it is possible to solve following point present in prior art：When carrying out CSI feedback using code book, the code word that RI corresponding code books in part are included is multiple, and the code word that RI values corresponding code book in part is included is one, it is meant that is given the correct time on the RI for needing PMI feedbacks to have that given the correct time on the RI having and does not need PMI to feed back.
The mode that above two determines N is correspond to, the embodiment of the present invention additionally provides following technical scheme：
(1) when employing mode one determines above-mentioned N, first set is the subset of second set, wherein, first set is the set of m report instance when Ns is equal to 1, and second set is the m+1 set of report instance when Ns is more than 1.
(2) when employing mode two determines above-mentioned N, and Ns equal to 1, before the CSI information of feedback S set pilot measurements, also include：The acquisition modes of the order designator RI and precoding matrix indicators PMI in above-mentioned CSI information are obtained with above-mentioned base station agreement.
In an optional example, RI and PMI is obtained at least through one of in the following manner：Fixed RI and/or PMI is reported with base station agreement；BI indexes (being appreciated that RI values are S) are equal to base station agreement RI indexes, and/or arrange PMI indexes equal to BI indexes with base station；Channel quality indication (CQI) information CQI indexes are equal to base station agreement RI indexes, and/or arrange PMI indexes equal to CQI indexes with base station.
When employing mode two determines above-mentioned N, the above method also includes：If the corresponding Ns of S set pilot tones of selection is equal to 1, when Ns is more than 1 on the feedback position of feedback RI, feeds back CQI information；And/or when Ns is more than 1 on the feedback position of feedback RI, feedback channel measurement pilot resources index CRI information；And/or abandon feedback on the feedback position of feedback RI when Ns is more than 1.
Alternatively, base station and terminal agreed upon channel status information quantify the code book C for using, comprising multiple order r=1, corresponding sub-codebook set C (r) of 2 ... Xr values in C；Xr is integer；In the code book C, the code word number that C (r) is included when r values belong to set Q is 1；The subset that Q gathers for span 1,2 ... the Xr of r.Terminal is quantified using the code book C to channel information, and when order r is not belonging to set Q, terminal determines the feedback overhead of PMI according to the size of code book, and is fed back to base station.When order r belongs to set Q, terminal feeds back a PMI of agreement overhead size O bit to base station, and O is the integer more than or equal to 1.
It should be noted that, for foregoing each method embodiment, in order to be briefly described, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not limited by described sequence of movement, because according to the present invention, some steps can use other orders or carry out simultaneously.Secondly, those skilled in the art should also know, embodiment described in this description belongs to preferred embodiment, and involved action and module is not necessarily essential to the invention.
A kind of determining device of channel status information reports example is additionally provided in the present embodiment, for realizing above-described embodiment and preferred embodiment, repeating no more for explanation had been carried out, and the module being related in the device is illustrated below.As used below, term " module " can realize the combination of the software and/or hardware of predetermined function.Although the device described by following examples is preferably realized with software, hardware, or the realization of the combination of software and hardware is also that may and be contemplated.Figure 4It is the structural frames of the determining device of channel status information reports example according to the embodiment of the present inventionFigure。As schemed 4Shown, the device includes：
Receiver module 40, for receiving the configuration signal that base station issues, and determines measurement pilot resources set R according to above-mentioned configuration-direct, wherein, above-mentioned measurement pilot resources set R is included：K covers pilot tone, and K is more than 1 and is positive integer, at least includes in above-mentioned K sets pilot tone：A set of antenna port number is 1 pilot tone of pilot tone and a set of antenna port number more than 1；
Selecting module 42, is connected with receiver module 40, for selecting the S in above-mentioned K sets pilot tone to cover pilot tone；
Feedback module 44, is connected with selecting module 42, for feeding back the configured information of above-mentioned S set pilot tone and covering based on S the CSI information of pilot measurement；
Determining module 46, it is connected with feedback module 44, determine to feed back the number N of the corresponding report instance of above-mentioned CSI information on physical uplink control channel PUCCH for covering the corresponding antenna port number N s of pilot tone according to S, above-mentioned N is determined at least through one of in the following manner：Mode one：When Ns is equal to 1, N is m, and when Ns is more than 1, N is m+1；Mode two：When Ns is more than or equal to 1, N is m, and wherein m is positive integer.
By the comprehensive function of above-mentioned modules, terminal can determine the number of report instance according to the corresponding antenna port number N s of S set pilot tones for selecting, and then in end side be not in the problem that report instance is obscured, solve in correlation technique, there is antenna port number N when K covers pilot tonek=1 and Nk>During 1 configuration, the report instance of terminal does not adapt to the problem of above-mentioned two situations, there is provided in Nk=1 and Nk>Two kinds of settling modes of solution report instance when 1, it also avoid the chaotic situation of end side feedback model.
In embodiments of the present invention, determining module 46, are additionally operable to when employing mode one determines above-mentioned N, first set is the subset of second set, wherein, first set is the set of m report instance when Ns is equal to 1, and second set is the m+1 set of report instance when Ns is more than 1.
Figure 5It is another structural frames of the determining device of channel status information reports example according to the embodiment of the present inventionFigure,As schemed 5Shown, said apparatus also include when employing mode two determines above-mentioned N, and Ns equal to 1：Provisioning modules 48, are connected with feedback module 44, the acquisition modes for obtaining order designator RI and precoding matrix indicators PMI in above-mentioned CSI information with above-mentioned base station agreement.
In an optional example, provisioning modules 48, for reporting fixed RI and/or PMI with base station agreement；It is additionally operable to arrange RI indexes equal to BI indexes with base station, and/or arranges PMI indexes equal to BI indexes with base station；It is additionally operable to be equal to channel quality indication (CQI) information CQI indexes with base station agreement RI indexes, and/or arranges PMI indexes equal to CQI indexes with base station.
Figure 6It is the structural frames of the feedback module 44 of the determining device of channel status information reports example according to the embodiment of the present inventionFigure, feedback module 44, for when employing mode two determines above-mentioned N, including：First feedback unit 440, when the corresponding Ns of S set pilot tones for selection is equal to 1, when Ns is more than 1 on the feedback position of feedback RI, feeds back CQI information；Second feedback unit 442, when the corresponding Ns of S set pilot tones for selection is equal to 1, when Ns is more than 1 on the feedback position of feedback RI, feedback channel measurement pilot resources index CRI information；3rd feedback unit 444, when the corresponding Ns of S set pilot tones for selection is equal to 1, when Ns is more than 1 on the feedback position of feedback RI, abandons feedback.
For above-mentioned m values, 1 and 2 can be preferably selected.
In embodiments of the present invention, a kind of quantization method of channel condition information is additionally provided,Figure 7It is the flow of the quantization for believing channel condition information according to the embodiment of the present inventionFigure,As schemed 7It is shown, comprise the following steps：
Step S702, the code book C used with base station agreed upon channel status information quantization, wherein, code book C includes：Multiple sub-codebooks set C (r), set C (r) includes the order r of multiple channel matrixes, and from set A=[1, Xr], Xr is positive integer to order r values；
Step S704, is quantified using code book C to channel condition information, and when order r is not belonging to set Q, the size according to code book C determines the feedback overhead of PMI, and feedback overhead is fed back into base station；When order r belongs to set Q, the PMI of the overhead size O bit for making an appointment is fed back to base station, wherein, O is the integer more than or equal to 1, and set Q is the subset of A.
In order to be better understood from above-mentioned technical proposal, above-mentioned technical proposal is illustrated below in conjunction with preferred embodiment.
Preferred embodiment 1：
Base station configuration K covers channel measurement pilot frequency (CSI-RS) to terminal；The resource location that base station indicates in configuration information sends above-mentioned K sets pilot tone；Base station can configure 1 set or cover pilot tone to terminal more, and issuing for the configuration information can be by high-level signaling；Which includes the cycle information of every set pilot tone, sequence information, the running time-frequency resource position in subframeFigureSample, sub-frame offset information etc.；Figure 8It is the candidate of the CSI-RS position according to the preferred embodiment of the present invention 1FigureSample is illustratedFigure,As schemed 8It is shown, most 58 ports of polygamy are supported in same subframeFigureSample #0, #1, #2, #3, #4, #5, if 4 ports of configurationFigureSample can configure 10,2 portsFigureSample can configure 20, wherein,Figure 8In DMRS (Demodulation Reference Signal) be demodulated reference signal.
If it is considered that different sub-frame offset situations, it is assumed that the cycle of configuration is 5ms, then can be optional by 5 kinds of sub-frame offsets, on the basis of original configurable pilots, the maximum occurrences of K can increase by 500, if configuration cycle for 10ms and more than, the pilot tone tricks K that can be configured can be some more.
Base station is according to the cycle information for configuring, sequence information, the running time-frequency resource position in subframeFigureSample, sub-frame offset information sends K set CSI-RS pilot tones respectively；The configuration signal that terminal detection base station sends, obtains the related positional information of pilot tone and sequence information, then can detect the pilot signal that receives in corresponding position；Sequence information is sent using the pilot signal for receiving and the pilot tone known, channel estimation can be carried out, obtain channel matrix H.
Figure 8In, Nk ports, k=1 ... K are corresponded to respectively；Nk spans are { 1,2,4,8 }；Base station is the feedback model that terminal configures CSI；If realizing flexible configuration, the configuration of some following measurement pilot resources is there may be, at least there is the pilot tone of pilot tone and a set of port number more than 1 that a set of port number is 1 in set pilot tone more, such asFollowing table threeIt is shown：
Table three
Preferred embodiment 2：
The channel information that terminal is based on the multiple pilot tones for estimating carries out the measurement of channel information, and selectes wherein a set of, S sets, feeds back the corresponding CSI information of information and S set pilot tone of S to base station；If such as the configuration in preferred embodiment 1；Terminal carries out the measurement of channel information, it is possible that the pilot tone or Ns of selection Ns=1>The situation of 1 pilot tone, it may appear that a set of feedback model and correspondence reporting instance (report instance) position (including cycle and biasing) can not simultaneously adapt to Ns=1 and Ns>The situation of 1 feedback, therefore, a kind of method is that the number for covering the size of the corresponding Ns of CSI-RS according to the s for selecting to determine reporting instance is (such asFollowing table fourIt is shown), the time range for being acted on here is the time twice between the information reporting of k；
Table four
Preferred embodiment 3：
The channel information that terminal is based on the multiple pilot tones for estimating carries out the measurement of channel information, and selectes wherein a set of, S sets, feeds back the corresponding CSI information of information and S set pilot tone of S to base station；If such as the configuration in embodiment 1；Terminal carries out the measurement of channel information, it is possible that the pilot tone or Ns of selection Ns=1>The situation of 1 pilot tone, it may appear that a set of feedback model and correspondence reporting instance position (including cycle and biasing) can not simultaneously adapt to Ns=1 and Ns>The situation of 1 feedback, therefore, a kind of method is that the number for covering the size of the corresponding Ns of CSI-RS according to the S for selecting to determine reporting instance is (such asFollowing table five、Table sixIt is shown), the time range for being acted on here is the time twice between the information reporting of S；
Table five
Table six
Preferred embodiment 4：
The channel information that terminal is based on the multiple pilot tones for estimating carries out the measurement of channel information, and selectes wherein a set of, S sets, feeds back the corresponding CSI information of information and S set pilot tone of S to base station；If can be now Ns=1 and Ns such as the configuration in preferred embodiment 1>All according to Ns when 1>1 demand carries out the configuration of feedback model and reporting instance, now, it may appear that situation below is (such asFollowing table sevenIt is shown)：
Table seven
The RI/PMI indexes that RI/PMI can be minimum can now be arranged, or RI/PMI can arrange to be equal to the value of k；Or RI/PMI can arrange to be equal to the value of CQI, such asFollowing table eight、Table nineIt is shown：
Table eight
Table nine
Can also be asFollowing table ten、Table tenShown in one：
Table ten
Table tenOne
Can also be asFollowing table ten2nd,Table tenShown in three：
Table tenTwo
Table tenThree
Preferred embodiment 5：
The channel information that terminal is based on the multiple pilot tones for estimating carries out the measurement of channel information, and selectes wherein a set of, S sets, feeds back the corresponding CSI information of information and S set pilot tone of S to base station；If can be now Ns=1 and Ns such as the configuration in preferred embodiment 1>All according to Ns when 1>1 demand carries out the configuration of feedback model and reporting instance, now, it may appear that situation below is (such asFollowing table tenShown in four)：
Table tenFour
Now can such asFollowing table ten5th,Table tenShown in six：
Table tenFive
Table tenSix
Preferred embodiment 6：
When a CSI process is configured long evolving system (Long Term Evolution Advanced, in referred to as LTE-A) feedback of Class B types, pilot tone tricks K=1, and it is when being fed back based on PMI, it is multiple to be likely to occur the code word that RI corresponding code books in part include, and the code word that RI values corresponding code book in part is included is one, such asFollowing table tenShown in seven
Table tenSeven
When the code word that the corresponding code book of RI values is included is one, can select not carry out PMI feedbacks, but reported number problem not etc. now occurs.
When terminal carries out channel information to be quantified, if the Rank (i.e. number of plies υ) of selection is 1,2,3, one in 4, because code book is contained more than 1 code word, it is meant that needs determine uplink feedback expense and feedback resources according to the size of code book, and feed back its corresponding index using these resources.If the Rank (i.e. number of plies υ) of selection is 5, one in 6,7,8, a kind of situation that can be in the or 4 of RI=1 or2 or 3 determines uplink feedback expense and feedback resources, and feeds back fixed index value to base station.
In sum, the embodiment of the present invention has reached following technique effect：Solve in correlation technique, there is antenna port number N when K covers pilot tonek=1 and Nk>During 1 configuration, the report instance of terminal does not adapt to the problem of above-mentioned two situations, there is provided in Nk=1 and Nk>Two kinds of settling modes of solution report instance when 1, it also avoid the chaotic situation of end side feedback model.
In another embodiment, a kind of software is additionally provided, the software is used to perform the technical scheme described in above-described embodiment and preferred embodiment.
In another embodiment, a kind of storage medium is additionally provided, be stored with above-mentioned software in the storage medium, the storage medium is included but is not limited to：CD, floppy disk, hard disk, scratch pad memory etc..
It should be noted that description and claims of this specification and above-mentionedIn accompanying drawingTerm " first ", " second " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that the object for so using can be exchanged in the appropriate case, so that embodiments of the invention described herein can be with except hereinDiagramOr the order beyond those of description is implemented.Additionally, term " including " and " being stored with " and their any deformation, meaningFigureIt is to cover non-exclusive including, for example, process, method, system, product or the equipment for containing series of steps or unit are not necessarily limited to those steps clearly listed or unit, but may include not list clearly or for these processes, method, product or other intrinsic steps of equipment or unit.
Obviously, those skilled in the art should be understood that, above-mentioned of the invention each module or each step can be realized with general computing device, they can be concentrated on single computing device, or be distributed on the network that multiple computing devices are constituted, alternatively, they can be realized with the executable program code of computing device, so as to, can be stored in being performed by computing device in storage device, and in some cases, shown or described step can be performed with different from order herein, or they are fabricated to each integrated circuit modules respectively, or be fabricated to single integrated circuit module to realize by the multiple modules or step in them.So, the present invention is not restricted to any specific hardware and software combination.
The preferred embodiments of the present invention are the foregoing is only, is not intended to limit the invention, for a person skilled in the art, the present invention there can be various modifications and variations.All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included within the scope of the present invention.
Claims (12)
1. a kind of determination method of channel status information reports example, it is characterised in that including：
The configuration signal that base station issues is received, and measurement pilot resources set R is determined according to the configuration-direct, its
In, the measurement pilot resources set R is included：K covers pilot tone, and K is more than 1 and is positive integer, and the K sets are led
At least include in frequency：Antenna port number is 1 pilot tone of pilot tone and antenna port number more than 1；
The S set pilot tones in the K sets pilot tone are selected, and feeds back the configured information and base of the S sets pilot tone
The CSI information of pilot measurement is covered in S, wherein, S belongs to set [1, K]；
The corresponding antenna port number N s of pilot tone is covered according to S to determine on physical uplink control channel PUCCH
The number N, the N for feeding back the corresponding report instance of the CSI information determine at least through one of in the following manner：
Mode one：When Ns is equal to 1, N is m, and when Ns is more than 1, N is m+1；Mode two：Ns is more than or waits
When 1, N is m, and wherein m is positive integer.
2. method according to claim 1, it is characterised in that when employing mode one determines the N, first set
It is the subset of second set, wherein, first set is the set of m report instance when Ns is equal to 1, second
The m+1 set of report instance when collection is combined into Ns more than 1.
3. method according to claim 1, it is characterised in that when employing mode two determines the N, and Ns is equal to 1
When, before the CSI information of feedback S set pilot measurements, also include：
The order designator RI and precoding matrix indicators PMI in the CSI information are obtained with base station agreement
Acquisition modes.
4. method according to claim 3, it is characterised in that obtain RI and PMI at least through one of in the following manner：
Fixed RI and/or PMI is reported with base station agreement；
Beam index BI indexes are equal to base station agreement RI indexes, and/or BI is equal to base station agreement PMI indexes
Index；
Channel quality indication (CQI) information CQI indexes are equal to base station agreement RI indexes, and/or arrange PMI ropes with base station
Draw equal to CQI indexes.
5. method according to any one of claim 1 to 4, it is characterised in that when employing mode two determines the N
When, methods described also includes：
If the corresponding Ns of S set pilot tones of selection is equal to 1, when Ns is more than 1 on the feedback position of feedback RI,
Feeds back CQI information；
And/or when Ns is more than 1 on the feedback position of feedback RI, feedback channel measurement pilot resources index CRI
Information；
And/or abandon feedback on the feedback position of feedback RI when Ns is more than 1.
6. method according to any one of claim 1 to 4, it is characterised in that the m values include：1、2.
7. a kind of quantization method of channel condition information, it is characterised in that including：
The code book C used with base station agreed upon channel status information quantization, wherein, the code book C includes：It is multiple
Sub-codebook set C (r), set C (r) includes the order r of multiple channel matrixes, order r values from set A=[1, Xr],
Xr is positive integer；
Channel condition information is quantified using the code book C, when order r is not belonging to set Q, according to described
The size of code book C determines the feedback overhead of PMI, and the feedback overhead is fed back into base station；When order r belongs to collection
When closing Q, the PMI of the overhead size O bit for making an appointment is fed back to base station, wherein, O is more than or equal to 1
Integer, set Q is the subset of A.
8. a kind of determining device of channel status information reports example, it is characterised in that including：
Receiver module, for receiving the configuration signal that base station issues, and determines measurement pilot tone according to the configuration-direct
Resource collection R, wherein, the measurement pilot resources set R is included：K covers pilot tone, and K is more than 1 and for just whole
Number, at least includes in the K sets pilot tone：A set of antenna port number is that 1 pilot tone and a set of antenna port number are more than
1 pilot tone；
Selecting module, for selecting the S in the K sets pilot tone to cover pilot tone；
Feedback module, the configured information of pilot tone is covered and based on S set pilot measurements for feeding back the S
CSI information；
Determining module, physical uplink link control is determined for covering the corresponding antenna port number N s of pilot tone according to S
The number N of the corresponding report instance of the CSI information is fed back on channel PUCCH processed, the N is at least through following
One of mode determines：Mode one：When Ns is equal to 1, N is m, and when Ns is more than 1, N is m+1；Mode two：
When Ns is more than or equal to 1, N is m, and wherein m is positive integer.
9. device according to claim 8, it is characterised in that the determining module, is additionally operable to when employing mode one is true
During the fixed N, first set is the subset of second set, wherein, first set is m when Ns is equal to 1
The set of report instance, second set is the m+1 set of report instance when Ns is more than 1.
10. device according to claim 8, it is characterised in that described device determining the N when employing mode two,
And Ns be equal to 1 when also include：
Provisioning modules, for obtaining order designator RI and precoding square in the CSI information with base station agreement
The acquisition modes of battle array designator PMI.
11. devices according to claim 10, it is characterised in that the provisioning modules, for being reported with base station agreement
Fixed RI and/or PMI；It is additionally operable to be equal to beam index BI indexes, and/or and base station with base station agreement RI indexes
Agreement PMI indexes are equal to BI indexes；It is additionally operable to be equal to channel quality indication (CQI) information CQI with base station agreement RI indexes
Index, and/or arrange PMI indexes equal to CQI indexes with base station.
12. device according to any one of claim 8 to 11, it is characterised in that the feedback module, including：
First feedback unit, for determining the corresponding Ns of the S set pilot tones of the N and selection in employing mode two
During equal to 1, when Ns is more than 1 on the feedback position of feedback RI, feeds back CQI information；
Second feedback unit, for determining the corresponding Ns of the S set pilot tones of the N and selection in employing mode two
During equal to 1, when Ns is more than 1 on the feedback position of feedback RI, feedback channel measurement pilot resources index CRI
Information；
3rd feedback unit, for determining the corresponding Ns of the S set pilot tones of the N and selection in employing mode two
During equal to 1, when Ns is more than 1 on the feedback position of feedback RI, feedback is abandoned.
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| CN106899378B (en) | 2020-09-08 |
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