CN107888324A - By mobile station, the feedback and method of reseptance of base station execution, mobile station and base station - Google Patents
By mobile station, the feedback and method of reseptance of base station execution, mobile station and base station Download PDFInfo
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- CN107888324A CN107888324A CN201610868505.9A CN201610868505A CN107888324A CN 107888324 A CN107888324 A CN 107888324A CN 201610868505 A CN201610868505 A CN 201610868505A CN 107888324 A CN107888324 A CN 107888324A
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- Prior art keywords
- feedback
- base station
- channel
- mobile station
- channel state
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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
-
- 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
-
- 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
- H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
Abstract
The channel feedback method of reseptance performed the embodiment provides the channel feedback method performed by mobile station, by base station, and corresponding mobile station and base station.The channel state feedback method performed by mobile station according to embodiments of the present invention, including：When base station triggers during the channel condition information of the first kind (CSI) feedback, determine whether the mobile station uses the CSI feedback of the first kind, and generate feedback kind and determine result；The feedback type information for indicating that the feedback kind determines result is sent to base station；And determine that result sends channel state feedback to the base station according to the feedback kind.
Description
Technical field
The application is related to wireless communication field, and is specifically related to by the channel feedback method of mobile station execution, by base station
The channel feedback method of reseptance of execution, and corresponding mobile station and base station.
Background technology
In wireless communication field, channel condition information (CSI, Channel State Information) refers to communicating
The channel attribute of link.It describes the weak factor of the signal on every transmission paths, i.e. each member in channel gain matrix H
The value of element, such as signal dispersion, environment are weak, range attenuation information.CSI can make communication system adapt to current channel bar
Part, guarantee is provided for the communication of high reliability high-speed.CSI feedback is examined generally by mobile station to channel status
Survey and obtain CSI, then periodically or aperiodically by the CSI report of acquisition to base station.
In 3GPP LTE Rel-14 versions, the code book of higher level may be introduced on the basis of traditional code book, such as
Linear combination code book (linear combination codebook) just turns into a kind of possible scheme.In order to support these more
Advanced code book introduces scheme, and mobile station needs to send more feedback information parameters in CSI feedback, to adapt to LTE system
Further demand.
The content of the invention
According to an aspect of the invention, there is provided a kind of channel state feedback method performed by mobile station, including：When
During the base station triggers channel condition information of the first kind (CSI) feedback, determine whether the mobile station uses the first kind
The CSI feedback of type, and generate feedback kind and determine result；The feedback for indicating that the feedback kind determines result is sent to base station
Type information；And determine that result sends channel state feedback to the base station according to the feedback kind.
According to another aspect of the present invention, there is provided a kind of channel state feedback method of reseptance performed by base station, including：
The channel condition information (CSI) that the first kind is sent to mobile station feeds back triggering；Receive the feedback kind letter sent from mobile station
Breath；And determine the mobile station to the type of the channel state feedback of transmission according to the feedback type information.
In accordance with a further aspect of the present invention, there is provided a kind of mobile station, including：Determining unit, it is configured to work as base station triggers
During the channel condition information of the first kind (CSI) feedback, determine whether the mobile station is anti-using the CSI of the first kind
Feedback, and generate feedback kind and determine result；Transmitting element, it is configured to indicate that the feedback kind determines result to base station transmission
Feedback type information, and according to the feedback kind determine result to the base station send channel state feedback.
According to another aspect of the invention, there is provided a kind of base station, including：Transmitting element, it is configured to send to mobile station
Channel condition information (CSI) the feedback triggering of the first kind；Receiving unit, it is configured to receive the feedback kind sent from mobile station
Information；And determining unit, it is configured to determine that the mobile station is anti-to the channel status of transmission according to the feedback type information
The type of feedback.
Connect according to the channel feedback method performed by mobile station of the above-mentioned aspect of the present invention, the channel feedback performed by base station
Receiving method, and corresponding mobile station and base station, mobile station can be made to determine the feedback kind of channel status and according to being determined
Feedback kind determine that feedback kind determines result, so as to send corresponding channel state feedback to base station.Letter in the present invention
Road feedback of status can include the amplitude and phase information that can support linear combinational code sheet.In addition, improved letter in the present invention
Road status reporting mechanism can bring performance gain, and by avoiding unnecessary channel status reporting from then saving expense,
Therefore being capable of balancing gain and expense according to the channel feedback of the present invention and method of reseptance.
Brief description of the drawings
Embodiments of the present invention is described in detail in conjunction with the accompanying drawings, above and other objects of the present invention, feature,
Advantage will become apparent.
Fig. 1 shows for the base station of traditional code book and mobile station channel feedback and receives operation chart；
Fig. 2 shows to be introduced into base station after linear combinational code sheet in the embodiment of the present invention and mobile station channel feedback and received and grasps
Make schematic diagram；
Fig. 3 shows the flow chart of channel state feedback method of the embodiment of the present invention；
Fig. 4 shows to supplement channel resource schematic diagram shared by PMI information and supplement CQI information in the embodiment of the present invention；
Fig. 5 shows the information transfer periodically with the channel state feedback method of aperiodicity mixing in the embodiment of the present invention
Process；
Fig. 6 shows the message transmitting procedure of periodic channel state feedback method in the embodiment of the present invention；
Fig. 7 shows the message transmitting procedure of periodic channel state feedback method in the embodiment of the present invention；
Fig. 8 shows channel resource schematic diagram shared by aperiodicity channel state feedback method CTI in the embodiment of the present invention；
Fig. 9 shows the message transmitting procedure of aperiodicity channel state feedback method in the embodiment of the present invention；
Figure 10 shows the message transmitting procedure of aperiodicity channel state feedback method in the embodiment of the present invention；
Figure 11 shows the feedback model example of aperiodicity channel state feedback method in the embodiment of the present invention；
Figure 12 shows the flow chart of channel state feedback method of reseptance in the embodiment of the present invention；
Figure 13 shows the structured flowchart of mobile station in the embodiment of the present invention；
Figure 14 shows the structured flowchart of base station in the embodiment of the present invention.
Embodiment
Below with reference to accompanying drawings to describe the channel feedback method of mobile station execution according to embodiments of the present invention, by base station
The channel feedback method of reseptance of execution, and corresponding mobile station and base station.In the accompanying drawings, identical reference number is from beginning to end
Represent identical element.It should be understood that：The embodiments described herein is merely illustrative, and is not necessarily to be construed as limiting this hair
Bright scope.
Fig. 1 is shown in Rel.13 for the base station of traditional code book and mobile station channel feedback and reception operation chart.
In Rel.13, for traditional code book, and a wave beam is only supported, channel state feedback mode is traditional feedback system.
And when introducing linear this after of combinational code, feedback system is by including traditional feedback system and the used by mobile station
Feedback system after the feedback system of one type, namely improvement, both feedback systems are directed to traditional code book and line respectively
Property combination code book.
In the present invention, take and judge that the method for channel state feedback mode judges that the channel of mobile station is anti-using mobile station
Feedback mode.Fig. 2 shows base station and mobile station channel feedback and the reception being introduced into after linear combinational code sheet in the embodiment of the present invention
Operation chart, wherein determining its used feedback system by mobile station.
Specifically, the present invention proposes that mode is implemented as follows.
First, reference picture 3 describes the channel state feedback method according to embodiments of the present invention performed by mobile station.Fig. 3
The flow chart of the channel state feedback method 300 is shown.
As shown in figure 3, in step S301, when base station triggers during the channel condition information of the first kind (CSI) feedback,
Determine whether the mobile station uses the channel state feedback of the first kind, and generate feedback kind and determine result.Such as
Upper described, the channel state feedback of the first kind here is to correspond to the improved channel condition information of linear combination code book
Feedback system.When base station triggers during the channel condition information of the first kind (CSI) feedback, mobile station is entered to channel status first
Row measurement, and then determine that the mobile station uses the channel state feedback of the first kind according to the measurement result of channel status
It is or (anti-i.e. using traditional channel state feedback, Second Type channel status without using the channel state feedback of the first kind
Feedback), and generate feedback kind and determine result.Measurement of the mobile station to channel status can be periodic or non-week
Phase property.
In step s 302, the feedback type information for indicating that the feedback kind determines result is sent to base station；And root
Determine that result sends channel state feedback to the base station according to the feedback kind.
Here feedback type information can periodically or aperiodically be sent to base station.It is for example, anti-
Type information is presented periodically to send to base station using physical uplink control channel (PUCCH), or feedback type information profit
Aperiodically sent with Physical Uplink Shared Channel (PUSCH) to base station.
Above-mentioned sent to base station indicates that the feedback kind determines the feedback type information of result and according to the feedback sort
Type determines that result sends channel state feedback to the base station and can separately performed.Wherein, instruction institute is sent to base station
State feedback kind and determine that the feedback type information of result can be periodically or aperiodically；And according to described
It similarly can be periodically or aperiodic that feedback kind, which determines that result sends channel state feedback to the base station,
Property, the two is independent of each other.
In a preferred embodiment, can periodically and aperiodically perform channel state feedback of the present invention
Method.Specifically, when base station triggers after the channel state feedback of the first kind, PUCCH can be utilized periodically to base station
Send the feedback type information for indicating that the feedback kind determines result.Specifically, mobile station can use channel state feedback
Type indicates that (CTI) sends the feedback type information for indicating that the feedback kind determines result to base station.CTI is one newly-built
Channel status type indicator, the feedback kind for indicating channel status are traditional channel state feedbacks or the first kind
Channel state feedback.It can include two bits and be used to indicate combination numbers of beams (combination beam
Number) --- for example utilize 00,01,10,11 numbers of beams for representing 1-4 respectively；A bit can also be included to be used to indicate
Channel state feedback type --- such as 0 represents Second Type channel state feedback, and 1 represents first kind channel state feedback.
When mobile station determines the channel state feedback using the first kind, it is anti-the first channel status can be sent to base station
Feedback.The transmission of first channel state feedback can be aperiodically.The parameter of first channel state feedback can include CSI-
RS resources instruction (CRI, CSI-RS resource indicator), order (RI), precoding matrix indicators (PMI,
Precoding matrix indicator), channel quality instruction (CQI, channel quality indication) and
Linear combines the coefficient (coefficient) of code book, and wherein coefficient includes phase and amplitude, is sending the first channel status
During the parameter of feedback, PMI and coefficient can individually be sent, coefficient can also be combined with PMI2 and sent comprising coefficient
PMI2。
When it is determined that the mobile station without using the first kind channel state feedback when, to base station send second channel
Feedback of status, the parameter of second channel feedback of status can include CSI-RS instruction (CRI, CSI-RS resource
Indicator), order (RI), precoding matrix indicators (PMI, precoding matrix indicator), channel quality refer to
Show (CQI, channel quality indication), the parameter of second channel feedback of status and the first channel state feedback
Parameter can be different.The first channel state feedback aperiodically wherein is sent to the base station, and is periodically sent out to base station
Second channel is sent to feed back.First channel feedback is fed back independently of the second channel.
In another preferred embodiment of the invention, equally can periodically and aperiodically perform this channel status
Feedback method.Specifically, when base station triggers after the channel state feedback of the first kind, using PUCCH periodically to base station
The feedback type information for indicating that the feedback kind determines result is sent, specifically, mobile station can use channel state feedback
Type indicates that (CTI) sends the feedback type information for indicating that the feedback kind determines result to base station.Also, regardless of CTI's
How is feedback result, and mobile station also periodically sends second channel feedback of status to base station.
In addition, when it is determined that the mobile station uses the channel state feedback of the first kind, the present embodiment method is also
Including：The first channel state feedback aperiodically is sent to base station, and first channel state feedback includes not including
Feedback of status side information in the second channel feedback of status.Specifically, feedback of status side information can include：Mend
Fill PMI information, supplement CQI information and coefficient.As shown in figure 4, in the channel state feedback of aperiodicity first, PMI is supplemented
Information and supplement CQI information can be placed in the region in figure shown in ellipse, adjacent with original PMI and CQI, more accurately to represent
First channel state feedback information.
Fig. 5 shows the periodicity of both of the aforesaid preferred embodiment representative and the channel state feedback side of aperiodicity mixing
The message transmitting procedure of method.Wherein, the information feedback of the base station triggers first kind, mobile station are true by Channel Detection
Determine feedback kind and determine result, and base station is sent to by CTI, then determine result by channel state feedback according to feedback kind
Each parameter send to base station.
In another preferred embodiment of the present invention, channel state feedback method can be periodically carried out.Specifically,
When base station triggers after the channel state feedback of the first kind, periodically sent using PUCCH to base station and indicate the feedback
Type determines the feedback type information of result, and mobile station can use channel state feedback type instruction (CTI) to be sent to base station
Indicate that the feedback kind determines the feedback type information of result, precoding type instruction (PTI) can also be used to be sent out to base station
Send the feedback type information for indicating that the feedback kind determines result.Wherein PTI is existing type indicator in PUCCH, this
Inventive embodiments can indicate the different feedback kinds of channel status by carrying out appropriate expansion to original PTI.Such as can be with
PTI is extended to 3 bits, with indication feedback numbers of beams：It is used to refer to combine numbers of beams using rear dibit, or uses the latter ratio
Spy is used to refer to channel state feedback type.
When it is determined that the mobile station uses the channel state feedback of the first kind, periodically the is sent to base station
One channel state feedback；When it is determined that the mobile station uses the channel state feedback of Second Type, periodically sent out to base station
Send second channel feedback of status.The relevant parameter of first channel state feedback and second channel feedback of status is as it was previously stated, herein
Repeat no more.Similarly, PMI and coefficient can individually be sent in first kind channel state feedback, can also will is
Number combines the PMI2 for sending and including coefficient with PMI.
, can be by down-sampled when information spillover in above-mentioned periodic feedback CSI implementation process
(subsampling), increase new feedback category (feedback type) and letter is avoided using PUCCH format (format) 3
Breath overflows.
Specifically, for new feedback category, can be represented using below equation：
(10×nf+|ns/2|-NOFFSET,coefficients)mod(Q×Npd)=0,
N in formulafFor frame, nsFor the time slot in frame, NOFFSET,coefficientsTo be after PMI2 indexes (index) are reported
The skew of number report, NpdThe cycle reported for coefficient, and Q is the multiple value in the cycle of coefficient report.
And for PUCCH format 3, nowadays CSI supports format 2 and format 3, PUCCH in PUCCH
Format 2 expense is maximum 11 bits, and PUCCH format 3 expense is maximum 22 bits, therefore can be used
PUCCH format 3 support bigger load.
Fig. 6 and Fig. 7 shows the message transmitting procedure for the periodic channel state feedback method that above-described embodiment represents.Its
In, for Fig. 6 using PTI to base station repeats feedback type information, Fig. 7 uses CTI to base station repeats feedback type information.Specifically,
In figure 6, base station triggers the information feedback and configuration report moment (reporting of the first kind by signal
Instance), it includes configuring position in subframe, cycle etc., and mobile station determines that feedback kind determines by Channel Detection
As a result, and by PTI be sent to base station, then according to feedback kind determine result by each parameter of channel state feedback send to
Base station.And the flow in Fig. 7 is similar to Fig. 6, its difference is that the feedback kind detected is determined result by mobile station by CTI
It is sent to base station.
In another preferred embodiment of the present invention, channel state feedback method can be aperiodically performed.Specifically
Ground, the feedback type information for indicating that the feedback kind determines result can be aperiodically sent to base station, and according to institute
State feedback kind and determine that result sends channel state feedback to the base station.Wherein, the channel of the first kind in base station triggers
After feedback of status, aperiodicity sends the feedback type information for indicating that the feedback kind determines result to base station.When it is determined that institute
State mobile station use the first kind channel state feedback when, aperiodically to base station send the first channel status it is anti-
Feedback；When it is determined that the mobile station without using the first kind channel state feedback when, aperiodically send the to base station
Two channel state feedbacks.Each parameter fed back is the same as those described above, and is repeated no more., can for acyclic channel state feedback
So that PMI and coefficient individually to be sent, coefficient can also be combined to the PMI for sending and including coefficient with PMI.In addition, channel shape
State feedback can include order instruction (RI), and mobile station can use neighbor configuration to be sent out to send the resource of the resource of the order instruction
Send the feedback type information.Fed back for example, mobile station can use channel state feedback type instruction (CTI) to be sent to base station
Type information, CTI can be placed in the region shown in ellipse in Fig. 8, adjacent with RI.
Fig. 9 and Figure 10 shows the information transfer mistake for the aperiodicity channel state feedback method that above-described embodiment represents
Journey.Wherein, Fig. 9 have sent PMI and beam coefficient respectively, and what Figure 10 was sent is then to contain the PMI2 combined with coefficient.Tool
Body, the information feedback of the base station triggers first kind, mobile station determines that feedback kind determines knot by Channel Detection
Fruit, and base station is sent to by CTI, then determine that result sends each parameter of channel state feedback to base according to feedback kind
Stand.
The acyclic channel state feedback method of the embodiment of the present invention add for broadband (wideband) feedback and/
Or the new feedback model (mode) of subband (subband) feedback.Wherein it is possible to the feedback linearization combination wave beam system only on subband
Number/PMI, can also on broadband and subband common feedback linear combination beam coefficient/PMI.Several on feedback model show
Such as respectively illustrated shown in Figure 11, in Figure 11 and feed back schematic diagram under different pattern (1-3,2-3,3-3).Wrapped when needing to report
During coefficient containing phase and amplitude, it is necessary to introduced on the basis of traditional feedback model new aperiodicity feedback model (by
Cqi-ReportModeAperiodic is indicated).
In channel state feedback method provided in an embodiment of the present invention, mobile station can be made to determine the feedback of channel status
Type simultaneously determines that feedback kind determines result according to identified feedback kind, anti-so as to send corresponding channel status to base station
Feedback.Channel state feedback in the embodiment of the present invention can include the amplitude and phase information that can support linear combinational code sheet.
In addition, improved channel status reporting mechanism can bring performance gain in the embodiment of the present invention, and it is unnecessary by avoiding
Channel status reporting can then save expense, therefore being capable of balancing gain and expense according to the channel feedback method of the present invention.
Secondly, reference picture 12 describes the channel state feedback method of reseptance according to embodiments of the present invention performed by base station.
Figure 12 shows the flow chart of the channel state feedback method of reseptance 1200.
As shown in figure 12, in step S1201, the channel condition information (CSI) that the first kind is sent to mobile station feeds back
Triggering.When base station it needs to be determined that during the channel state feedback type of mobile station, the letter of the first kind will be sent to mobile station first
Road feedback of status triggering, carry out Channel Detection and generate to feed back to determine result to trigger mobile station.Feedback kind can include the
The channel state feedback of one type and the channel state feedback of Second Type.Here the channel state feedback of the first kind is
Corresponding to the improved information feedback mode of linear combination code book, and the channel state feedback of Second Type is tradition
Channel state feedback mode.
In step S1202, the feedback type information sent from mobile station is received.
In this step, after mobile station, which obtains feedback kind, determines result, the instruction feedback sort will be sent to base station
Type determines the feedback type information of result.This feedback type information that base station sends receiving mobile.
In step S1203, channel state feedback of the mobile station to transmission is determined according to the feedback type information
Type.The feedback type information of base station analysis mobile station transmission simultaneously determines therefrom that the feedback kind of mobile station.Mobile station is to base
Stand send feedback type information and channel state feedback may each be periodically or non-periodically.When above- mentioned information is the cycle
Property to base station send when, by take physical uplink control channel (PUCCH) enter row information send, when above- mentioned information non-week
Phase property to base station send when, by take Physical Uplink Shared Channel (PUSCH) be transmitted.Specifically, mobile station can make
The feedback type information for indicating that the feedback kind determines result is sent to base station with channel state feedback type instruction (CTI).
CTI is a newly-built channel status type indicator, and the feedback kind for indicating channel status is traditional channel status
The channel state feedback of feedback or the first kind；Can also in PUCCH using existing precoding type instruction (PTI) to
Base station sends the feedback type information for indicating that the feedback kind determines result.
Alternatively, the channel status that base station can be sent according to the type reception mobile station of identified channel state feedback
Feedback.Wherein, when mobile station determines the channel state feedback using the first kind, the first channel status can be sent to base station
Feedback.The parameter of first channel state feedback can include CSI-RS instruction (CRI, CSI-RS resource
Indicator), order (RI), precoding matrix indicators (PMI, precoding matrix indicator), channel quality refer to
Show the coefficient (coefficient) of (CQI, channel quality indication) and linear combination code book, its
Middle coefficient includes phase and amplitude, when sending the parameter of the first channel state feedback, can individually send out PMI and coefficient
Send, coefficient can also be combined to the PMI2 for sending and including coefficient with PMI.When mobile station determines the letter without using the first kind
During road feedback of status, second channel feedback of status will be sent to base station, the parameter of second channel feedback of status can include CSI-
RS resources instruction (CRI, CSI-RS resource indicator), order (RI), precoding matrix indicators (PMI,
Precoding matrix indicator), channel quality instruction (CQI, channel quality indication), second
The parameter of channel state feedback can be different from the parameter of the first channel state feedback.
In channel state feedback method of reseptance provided in an embodiment of the present invention, base station need not determine the channel shape of mobile station
The feedback kind of state, but voluntarily determined according to Channel Detection by mobile station, base station only needs channel determined by receiving mobile
Feedback of status type information simultaneously receives corresponding channel state feedback accordingly, so as to improve the transmission performance of wireless communication system
And communication efficiency.Channel state feedback in the embodiment of the present invention can include amplitude and the phase letter for supporting linear combinational code sheet
Breath, it would be preferable to support 3GPP LTE standards of new generation.
Below, reference picture 13 describes mobile station according to embodiments of the present invention.Figure 13 is shown to be implemented according to the present invention
The block diagram of the mobile station 1300 of example.
As shown in figure 13, mobile station includes determining unit 1310 and transmitting element 1320.In addition to the two units, move
Dynamic platform 1300 can also include miscellaneous part, however, because these parts are unrelated with the content of the embodiment of the present invention, therefore at this
In omit its diagram and description.Further, since the operations described below that mobile station 1300 according to embodiments of the present invention performs is specific
Details is identical with the details described above with reference to Fig. 3-11, therefore is omitted herein in order to avoid repeating to same detail
Repeated description.
Determining unit 1310 in Figure 13 mobile station 1300 has been configured to when base station triggers the channel status of the first kind
When information (CSI) is fed back, determine whether the mobile station uses the channel state feedback of the first kind, and generate feedback
Type determines result.As described above, the channel state feedback of the first kind here corresponds to changing for linear combination code book
The information feedback mode entered.It is logical first when base station triggers during the channel condition information of the first kind (CSI) feedback
Cross measuring unit (not shown) to measure channel status, and determination is then utilized according to the measurement result of channel status
Unit 1310 determines still (to use without using the channel state feedback of the first kind using the channel state feedback of the first kind
Traditional channel state feedback, Second Type channel state feedback), and generate feedback kind and determine result.Mobile station is to channel
The measurement of state can be periodic or acyclic.
Transmitting element 1320 is configured to send the feedback type information for indicating that the feedback kind determines result to base station；With
And determine that result sends channel state feedback to the base station according to the feedback kind.
Here feedback type information can periodically or aperiodically be sent to base station.Work as feedback
Type information is when periodically being sent to base station, will take physical uplink control channel (PUCCH) and enter row information transmission,
When feedback type information is aperiodically sent to base station, Physical Uplink Shared Channel (PUSCH) will be taken and be transmitted.
Wherein, in a preferred embodiment, transmitting element 1320 being capable of periodicity and aperiodically feedback channel shape
State.Specifically, when base station triggers after the channel state feedback of the first kind, transmitting element 1320 can utilize the PUCCH cycles
Property the feedback type information for indicating that the feedback kind determines result is sent to base station.Specifically, transmitting element 1320 can be with
Sent using channel state feedback type instruction (CTI) to base station and indicate that the feedback kind determines that the feedback kind of result is believed
Breath.CTI is a newly-built channel status type indicator, and the feedback kind for indicating channel status is traditional channel shape
State feeds back or the channel state feedback of the first kind.Original PTI and order (RI) common feedback in CTI and PUCCH.It can be with
It is used to indicate combination numbers of beams (combination beam number) including two bits --- for example using 00,01,10,
11 represent 1-4 numbers of beams respectively；A bit can also be included to be used to indicate channel state feedback type --- such as 0 represents
Second Type channel state feedback, 1 represents first kind channel state feedback.
When determining unit 1310 determines the channel state feedback using the first kind, transmitting element 1320 can be to base station
Send the first channel state feedback.The transmission of first channel state feedback can be aperiodically.First channel state feedback
Parameter can include CSI-RS instruction (CRI, CSI-RS resource indicator, order (RI), pre-coding matrix
Designator (PMI, precoding matrix indicator), channel quality instruction (CQI, channel quality
Indication) and linear combines the coefficient (coefficient) of code book, and wherein coefficient includes phase and amplitude,
When sending the parameter of the first channel state feedback, PMI and coefficient can individually be sent, can also be by coefficient and PMI groups
Close the PMI2 for sending and including coefficient.
When determining unit 1310 determine the mobile station without using the first kind channel state feedback when, send single
Member 1320 sends second channel feedback of status to base station, and the parameter of second channel feedback of status can include CSI-RS and indicate
(CRI, CSI-RS resource indicator), order (RI), precoding matrix indicators (PMI, precoding matrix
Indicator), channel quality instruction (CQI, channel quality indication), the ginseng of second channel feedback of status
Number can be different from the parameter of the first channel state feedback.It is wherein aperiodically anti-to the base station the first channel status of transmission
Feedback, and periodically send second channel feedback to base station.First channel feedback is fed back independently of the second channel.
In another preferred embodiment of the invention, transmitting element 1320 equally can be periodically and aperiodically anti-
Present channel status.Specifically, when base station triggers after the channel state feedback of the first kind, transmitting element 1320 utilizes PUCCH
The feedback type information for indicating that the feedback kind determines result, specifically, transmitting element 1320 are periodically sent to base station
Channel state feedback type instruction (CTI) can be used to send the feedback kind for indicating that the feedback kind determines result to base station
Information.Also, regardless of CTI feedback result, transmitting element 1320 also periodically sends second channel state to base station
Feedback.
In addition, when determining unit 1310 determines that the mobile station uses the channel state feedback of the first kind, hair
Unit 1320 is sent to be additionally configured to aperiodically anti-to the first channel state feedback of base station transmission, and first channel status
Feedback includes the feedback of status side information being not included in the second channel feedback of status.Specifically, feedback of status supplement letter
Breath can include：Supplement PMI information, supplement CQI information and coefficient.It is as shown in figure 4, anti-in the channel status of aperiodicity first
In feedback, supplement PMI information and supplement CQI information can be placed in the region in figure shown in ellipse, adjacent with original PMI and CQI, with
More accurately represent the first channel state feedback information.
Fig. 5 shows the message transmitting procedure for the mobile station that both of the aforesaid preferred embodiment represents.Wherein, base station triggers
The information feedback of one type, the determining unit 1310 in mobile station determine that feedback kind determines knot by Channel Detection
Fruit, and CTI is sent to by base station by transmitting element 1320, subsequent transmitting element 1320 determines that result will be believed according to feedback kind
Each parameter of road feedback of status is sent to base station.
In another preferred embodiment of the present invention, mobile station being capable of periodically fed-back channel status.Specifically, when
After the base station triggers channel state feedback of the first kind, transmitting element 1320 is periodically sent using PUCCH to base station to be referred to
Show that the feedback kind determines the feedback type information of result, specifically, transmitting element 1320 can use channel state feedback
Type indicates that (CTI) sends the feedback type information for indicating that the feedback kind determines result to base station, can also use prelist
Code type indicates that (PTI) sends the feedback type information for indicating that the feedback kind determines result to base station.Wherein PTI is
Existing type indicator in PUCCH, the embodiment of the present invention can indicate channel shape by carrying out appropriate expand to original PTI
The different feedback kinds of state.Such as PTI can be extended to 3 bits, with indication feedback numbers of beams：It is used to refer to using rear dibit
Numbers of beams is combined, or channel state feedback type is used to refer to using latter bit.
When determining unit 1310 determines that the mobile station uses the channel state feedback of the first kind, transmitting element
1320 periodically send the first channel state feedback to base station；When determining unit 1310 determines that the mobile station uses the second class
During the channel state feedback of type, transmitting element 1320 periodically sends second channel feedback of status to base station.First channel shape
State is fed back and the relevant parameter of second channel feedback of status is as it was previously stated, will not be repeated here.Similarly, first kind channel shape
PMI and coefficient can individually be sent in state feedback, coefficient can also be combined to the PMI2 for sending and including coefficient with PMI.
, can be by down-sampled when information spillover in the implementation process of above-mentioned periodic feedback channel status
(subsampling), increase new feedback category (feedback type) and letter is avoided using PUCCH format (format) 3
Breath overflows.
Fig. 6 and Fig. 7 shows the message transmitting procedure for the mobile station that above-described embodiment represents.Wherein, mobile station makes in Fig. 6
With PTI to base station repeats feedback type information, in Fig. 7 mobile station using CTI to base station repeats feedback type information.Specifically,
In figure 6, base station triggers the information feedback and configuration report example (reporting of the first kind by signal
Instance), it includes configuring position in subframe, cycle etc., and the determining unit 1310 in mobile station passes through Channel Detection
Determine that feedback kind determines result, and PTI is sent to by base station by transmitting element 1320, subsequent transmitting element 1320 is according to anti-
Feedback type determines that result sends each parameter of channel state feedback to base station.And the flow in Fig. 7 is similar to Fig. 6, it is different
It is that the feedback kind detected is determined that result is sent to base station by transmitting element 1320 by CTI.
In another preferred embodiment of the present invention, mobile station being capable of aperiodically fed-back channel status.Specifically,
Transmitting element 1320 can aperiodically send the feedback type information for indicating that the feedback kind determines result to base station, with
And determine that result sends channel state feedback to the base station according to the feedback kind.Wherein, the first kind in base station triggers
After the channel state feedback of type, the aperiodicity of transmitting element 1320 is sent to base station indicates that the feedback kind determines the anti-of result
Present type information.When determining unit 1310 determines that the mobile station uses the channel state feedback of the first kind, send
Unit 1320 aperiodically sends the first channel state feedback to base station；When determining unit 1310 determines that the mobile station does not make
During with the channel state feedback of the first kind, it is anti-that transmitting element 1320 aperiodically sends second channel state to base station
Feedback.Each parameter fed back is the same as those described above, and is repeated no more., can be by PMI and coefficient for acyclic channel state feedback
Individually send, coefficient can also be combined to the PMI for sending and including coefficient with PMI.In addition, channel state feedback can include
Order instruction (RI), the transmitting element 1320 in mobile station can use neighbor configuration to send the resource of the resource of the order instruction
Send the feedback type information.For example, transmitting element 1320 can use channel state feedback type instruction (CTI) to base station
Feedback type information is sent, CTI can be placed in the region shown in ellipse in Fig. 8, adjacent with RI.
Fig. 9 and Figure 10 shows the message transmitting procedure for the mobile station that above-described embodiment represents.Wherein, Fig. 9 is utilized respectively
Transmitting element 1320 have sent PMI and beam coefficient, and Figure 10 is then to utilize the containing of sending of transmitting element 1320 and coefficient
Product PMI2.Specifically, the information feedback of the base station triggers first kind, the determining unit 1310 in mobile station
Determine that feedback kind determines result by Channel Detection, and CTI is sent to by base station by transmitting element 1320, then send single
Member 1320 determines that result sends each parameter of channel state feedback to base station according to feedback kind.
The acyclic channel state feedback of mobile station of the embodiment of the present invention introduces anti-for broadband (wideband)
Feedback and/or the new feedback model (mode) of subband (subband) feedback.Wherein, mobile station can only on subband feedback line
Property combination beam coefficient/PMI, can also on broadband and subband common feedback linear combination beam coefficient/PMI.On feedback
Several examples of pattern are as shown in figure 11, and different patterns (1-3,2-3,3-3) lower channel feedback is respectively illustrated in Figure 11 and is shown
It is intended to.
The mobile station that the embodiment of the present invention is provided can determine the feedback kind of channel status and according to identified anti-
Feedback type determines that feedback kind determines result, so as to send corresponding channel state feedback to base station.In the embodiment of the present invention
Channel state feedback transmitted by mobile station can include the amplitude and phase information that can support linear combinational code sheet.In addition,
Improved channel status reporting mechanism can bring performance gain in the embodiment of the present invention, and by avoiding unnecessary channel shape
State report can then save expense, therefore the mobile station of the embodiment of the present invention being capable of balancing gain and expense.
Below, reference picture 14 describes base station according to embodiments of the present invention.Figure 14 is shown according to embodiments of the present invention
Base station 1400 block diagram.As shown in figure 14, base station 1400 includes transmitting element 1410, receiving unit 1420 and determining unit
1930.In addition to these three units, base station 1400 can also include miscellaneous part, however, due to these parts and the present invention
The content of embodiment is unrelated, therefore omits its diagram and description herein.Further, since base station according to embodiments of the present invention
The detail of 1400 operations described below performed is identical with the details described above with reference to Figure 12, therefore herein in order to keep away
The repeated description exempted to repeat and omitted to same detail.
The channel condition information (CSI) that transmitting element 1410 in Figure 14 is configured to send the first kind to mobile station feeds back
Triggering.When base station it needs to be determined that during the channel state feedback type of mobile station, transmitting element 1410 will be sent to mobile station first
The channel state feedback triggering of the first kind, carry out Channel Detection and generate to feed back to determine result to trigger mobile station.Feedback sort
Type can include the channel state feedback of the first kind and the channel state feedback of Second Type.Here the channel of the first kind
Feedback of status is to correspond to the improved information feedback mode of linear combination code book, and the channel shape of Second Type
State feedback is traditional channel state feedback mode.
Receiving unit 1420 is configured to receive the feedback type information sent from mobile station.When mobile station obtains feedback kind
After determining result, the feedback type information that indicates that the feedback kind determines result will be sent to base station.Receiving unit 1420
This feedback type information that receiving mobile is sent.
Determining unit 1430 is configured to determine channel status of the mobile station to transmission according to the feedback type information
The type of feedback.Determining unit 1430 analyzes the feedback type information that mobile station is sent and determines therefrom that the feedback sort of mobile station
Type.The feedback type information and channel state feedback that mobile station is sent to base station may each be periodically or non-periodically.When
Above- mentioned information is when periodically being sent to base station, will take physical uplink control channel (PUCCH) and enter row information transmission,
When above- mentioned information is aperiodically sent to base station, Physical Uplink Shared Channel (PUSCH) will be taken and be transmitted.Specifically
Ground, mobile station can use channel state feedback type instruction (CTI) to be sent to base station and indicate that the feedback kind determines result
Feedback type information.CTI is a newly-built CSI type indicator, and the feedback kind for indicating channel status is tradition
Channel state feedback or the first kind channel state feedback；Existing precoding type can also be used in PUCCH
Indicate that (PTI) sends the feedback type information for indicating that the feedback kind determines result to base station.
Alternatively, the type reception mobile station of the acceptable channel state feedback determined by of receiving unit 1420 is sent
Channel state feedback.Wherein, when mobile station determines the channel state feedback using the first kind, the can be sent to base station
One channel state feedback.The parameter of first channel state feedback can include CSI-RS instruction (CRI, CSI-RS
Resource indicator, order (RI), precoding matrix indicators (PMI, precoding matrix indicator), letter
Road quality instruction (CQI, channel quality indication) and the coefficient of linear combination code book
(coefficient), wherein coefficient includes phase and amplitude, can be by PMI when sending the parameter of the first channel state feedback
Individually sent with coefficient, coefficient can also be combined to the PMI2 for sending and including coefficient with PMI.When mobile station determine without using
During the channel state feedback of the first kind, second channel feedback of status will be sent to base station, second channel feedback of status
Parameter can include CSI-RS and indicate that (CRI, CSI-RS resource indicator), order (RI), pre-coding matrix refer to
Show symbol (PMI, precoding matrix indicator), channel quality instruction (CQI, channel quality
Indication), the parameter of second channel feedback of status can be different from the parameter of the first channel state feedback.
The base station provided according to embodiments of the present invention, it need not determine the feedback kind of the channel status of mobile station, but
Voluntarily determined according to Channel Detection by mobile station, the base station in the embodiment of the present invention only needs channel shape determined by receiving mobile
State feedback type information simultaneously receives corresponding channel state feedback accordingly, so as to improve the transmission performance of wireless communication system and
Communication efficiency.The channel state feedback that base station is received in the embodiment of the present invention can include the amplitude for supporting linear combinational code sheet
And phase information, it would be preferable to support 3GPP LTE standards of new generation.
The operation of above-mentioned mobile station 1300 and base station 1400 can be realized by hardware, can also be by by computing device
Software module realize, and further can pass through both combination realize.
Software module can be disposed in the storage medium of arbitrary format, such as RAM (random access storage device), sudden strain of a muscle
Deposit, be ROM (read-only storage), EPROM (erasable programmable ROM), EEPROM (electrically erasable ROM), register, hard
Disk, removable disk and CD-ROM.
This storage medium is connected to processor so that processor can write information to the storage medium or from the storage
Medium reads information.This storage medium can also accumulate within a processor.This storage medium and processor can be arranged
In ASIC.This ASIC can be disposed in mobile station 1300 and base station 1400.As discrete assembly, this storage medium
It can be disposed in mobile station 1300 and base station 1400 with processor.
Therefore, the present invention is explained in detail by using above-described embodiment；However, those skilled in the art should understand this hair
The bright embodiment for being not limited to resonable explanation.The present invention can in the case of without departing substantially from the scope of the present invention being defined by the claims
To be implemented as correction, modification pattern.Therefore, the description of specification is intended merely to explain example, and the present invention is not applied
Add any restrictions implication.
Claims (22)
1. a kind of channel state feedback method performed by mobile station, including：
When base station triggers during the channel condition information of the first kind (CSI) feedback, determine the mobile station whether using described
The CSI feedback of the first kind, and generate feedback kind and determine result；
The feedback type information for indicating that the feedback kind determines result is sent to base station；And
Determine that result sends channel state feedback to the base station according to the feedback kind.
2. the method for claim 1, wherein
Sent to base station and indicate that the feedback kind determines that the feedback type information of result includes：The first kind in base station triggers
CSI feedback after, the feedback type information for indicating that the feedback kind determines result is periodically sent to base station；
Determine that result sends channel state feedback to the base station and included according to the feedback kind：When it is determined that the mobile station makes
During with the CSI feedback of the first kind, the first channel state feedback is sent to base station.
3. method as claimed in claim 2, determine that result is anti-to base station transmission channel status according to the feedback kind
Feedback also includes：
When it is determined that the mobile station without using the first kind CSI feedback when, to base station send second channel feedback of status,
Wherein
The first channel state feedback aperiodically is sent to the base station,
First channel feedback is fed back independently of the second channel.
4. method as claimed in claim 2, in addition to：
In base station triggers after the CSI feedback of the first kind, second channel feedback of status periodically is sent to base station, wherein
The first channel state feedback aperiodically is sent to base station, and
First channel state feedback includes the feedback of status side information being not included in the second channel feedback of status.
5. method as claimed in claim 2, wherein when it is determined that the mobile station uses the CSI feedback of the first kind,
Sending the first channel state feedback to base station includes：
When it is determined that the mobile station uses the CSI feedback of the first kind, periodically the first channel shape is sent to base station
State is fed back.
6. method as claimed in claim 5, wherein sending the feedback kind for indicating that the feedback kind determines result to base station
Information includes：
Indicate that (PTI) sends the feedback type information for indicating that the feedback kind determines result to base station using precoding type.
7. the method as described in claim 1, wherein
The feedback type information for indicating that the feedback kind determines result is aperiodically sent to base station, and according to described anti-
Feedback type determines that result sends channel state feedback to the base station.
8. method as claimed in claim 7, wherein
The channel state feedback includes order instruction,
Sent to base station and indicate that the feedback kind determines that the feedback type information of result includes：
Using neighbor configuration the feedback type information is sent to send the resource of the resource of the order instruction.
9. the method as described in any one in claim 1-5 and 7-8, indicate that the feedback kind is true wherein being sent to base station
Determining the feedback type information of result includes：
The feedback type information for indicating that the feedback kind determines result is sent to base station using CSI feedback type instruction (CTI).
10. the method as described in any one in claim 1-5 and 7-8, wherein the channel of the first kind when base station triggers
When status information (CSI) is fed back, determine whether the mobile station is included using the CSI feedback of the first kind：
When base station triggers during the channel condition information of the first kind (CSI) feedback, channel status is measured；And
According to the measurement result of channel status, determine whether the mobile station uses the CSI feedback of the first kind.
11. a kind of channel state feedback method of reseptance performed by base station, including：
The channel condition information (CSI) that the first kind is sent to mobile station feeds back triggering；
Receive the feedback type information sent from mobile station；And
Determine the mobile station to the type of the channel state feedback of transmission according to the feedback type information.
12. a kind of mobile station, including：
Determining unit, when channel condition information (CSI) feedback of the first kind has been configured to when base station triggers, determines the movement
Whether platform uses the CSI feedback of the first kind, and generates feedback kind and determine result；
Transmitting element, it is configured to send the feedback type information for indicating that the feedback kind determines result to base station, and according to
The feedback kind determines that result sends channel state feedback to the base station.
13. mobile station as claimed in claim 12, wherein
The transmitting element after the CSI feedback of the first kind, periodically sends to base station in base station triggers and indicates the feedback
Type determines the feedback type information of result, and when it is determined that the mobile station uses the CSI feedback of the first kind, to
Base station sends the first channel state feedback.
14. mobile station as claimed in claim 13, wherein
The transmitting element be additionally configured to when it is determined that the mobile station without using the first kind CSI feedback when, to base station
Second channel feedback of status is sent, wherein
The transmitting element aperiodically sends the first channel state feedback to the base station,
First channel feedback is fed back independently of the second channel.
15. mobile station as claimed in claim 13, wherein
After the transmitting element has been additionally configured in base station triggers the CSI feedback of the first kind, periodically the is sent to base station
Two channel state feedbacks, wherein
The transmitting element aperiodically sends the first channel state feedback to base station, and
First channel state feedback includes the feedback of status side information being not included in the second channel feedback of status.
16. mobile station as claimed in claim 13, wherein
The transmitting element is periodically sent out when it is determined that the mobile station uses the CSI feedback of the first kind to base station
Send the first channel state feedback.
17. mobile station as claimed in claim 16, wherein
The transmitting element is sent to base station using precoding type instruction (PTI) and indicates that the feedback kind determines the anti-of result
Present type information.
18. mobile station as claimed in claim 12, wherein
The transmitting element aperiodically sends the feedback type information for indicating that the feedback kind determines result to base station, with
And determine that result sends channel state feedback to the base station according to the feedback kind.
19. mobile station as claimed in claim 18, wherein
The channel state feedback includes order instruction,
The transmitting element sends the feedback type information using neighbor configuration to send the resource of the resource of the order instruction.
20. the mobile station as described in any one in claim 12-16 and 18-19, wherein
The transmitting element is sent to base station using CSI feedback type instruction (CTI) and indicates that the feedback kind determines result
Feedback type information.
21. the mobile station as described in any one in claim 12-16 and 18-19, in addition to：
Measuring unit, when being configured to when base station triggers channel condition information (CSI) feedback of the first kind, channel status is entered
Row measurement, wherein
Whether the determining unit determines the mobile station using the first kind according to the measurement result of channel status
CSI feedback.
22. a kind of base station, including：
Transmitting element, the channel condition information (CSI) for being configured to send the first kind to mobile station feed back triggering；
Receiving unit, it is configured to receive the feedback type information sent from mobile station；And
Determining unit, it is configured to determine the mobile station to the class of the channel state feedback of transmission according to the feedback type information
Type.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610868505.9A CN107888324A (en) | 2016-09-29 | 2016-09-29 | By mobile station, the feedback and method of reseptance of base station execution, mobile station and base station |
| PCT/CN2017/103392 WO2018059392A1 (en) | 2016-09-29 | 2017-09-26 | Feedback and receiving methods executable on mobile station or base station, mobile station, and base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610868505.9A CN107888324A (en) | 2016-09-29 | 2016-09-29 | By mobile station, the feedback and method of reseptance of base station execution, mobile station and base station |
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| CN107888324A true CN107888324A (en) | 2018-04-06 |
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| KR101871707B1 (en) * | 2010-04-02 | 2018-06-27 | 엘지전자 주식회사 | User equipment apparatus and method for feedback channel state information in wireless communication system |
| CN101867458B (en) * | 2010-06-21 | 2016-03-02 | 中兴通讯股份有限公司 | The feedback method of channel condition information and device |
| CN101902309B (en) * | 2010-08-16 | 2015-06-03 | 中兴通讯股份有限公司 | Feedback method and terminal for channel state information |
| US9532362B2 (en) * | 2012-06-04 | 2016-12-27 | Interdigital Patent Holdings, Inc. | Communicating channel state information (CSI) of multiple transmission points |
| CN104811229B (en) * | 2014-01-24 | 2020-09-08 | 中兴通讯股份有限公司 | Channel state information processing method and device, terminal and base station |
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