CN102377469B - A kind of multidrop channel information feedback method, system and terminal - Google Patents
A kind of multidrop channel information feedback method, system and terminal Download PDFInfo
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- CN102377469B CN102377469B CN201110296264.2A CN201110296264A CN102377469B CN 102377469 B CN102377469 B CN 102377469B CN 201110296264 A CN201110296264 A CN 201110296264A CN 102377469 B CN102377469 B CN 102377469B
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
Abstract
The invention discloses a kind of multidrop channel information feedback methods, including：Network side is that the period CSI feedback of terminal and/or aperiodic CSI feedback specify N sets to need the channel state information CSI fed back, and configure corresponding channel state information reference signals CSI RS for the CSI and measured for channel state information；Terminal selects the M sets CSI in the N sets CSI to be fed back, and by the selection information informing network side of CSI, or, network side selects the M ' in N sets CSI to cover CSI, and instruction terminal feeds back the M ' sets CSI, wherein, N is natural number more than 1, M, M ' it is natural number more than zero and no more than N.The present invention also accordingly discloses a kind of multidrop channel information feedback system and terminal.Through the invention, reduce feedback quantity, ensure that the real-time of CSI, improve system performance.
Description
Technical field
The present invention relates to a kind of mobile communication technology field more particularly to multidrop channel information feedback method, system and ends
End.
Background technology
With the proposition of LTE-A demands, people are increasingly heavier to node average spectral efficiency (ase) and node edge spectrum efficiency
Depending in comparison, the spectrum efficiency of node edge is most paid close attention to by people, this is primarily due to the uplink and downlink of lte-a system all
It is with orthogonal frequency division multiplexing (Orthogonal Frequency Division Multiplexing, OFDM), or with OFDM
Certain be deformed into the frequency division systems of basic multiple access multiplexing mode, with traditional with CDMA (Code Division
Multiple Access, CDMA) it is different for the wireless communication system of basic multiple access multiplexing mode, lte-a system does not handle increasing
Benefit, for intra-node because complete frequency division is orthogonal, the interference processing almost without interference problem, but at node edge is opposite
It is intractable.
Currently, mainly having following three kinds of methods to the processing interfered at node edge in LTE：
1, interference randomization；
2, interference is eliminated；
3, interference coordination (hiding).
Wherein, when the method for interference randomization generally uses frequency hopping, jumps, the method for direct expansion or frame hopping subtracts among the nodes
The influence gently interfered, this method advantage is to be not necessarily to the network planning, with little need for the support of signaling, but this method can only mitigate it is dry
It disturbs, interference can not be inherently eliminated；Although interference elimination method can use certain algorithms to eliminate interference, generally need
Want additional physical entity that could complete preferably to interfere elimination；The method of interference coordination (hiding) is by between switching node
Some information use certain algorithms that each node is closed automatically according to the feedback information of other nodes with selection the case where itself
Suitable resource is transmitted, and to realize the efficient utilization of resource between node, mitigates the machine that resource collision between node utilizes as possible
Meeting, is finally reached the promotion of node edge performance, avoids interfering due to the identical running time-frequency resource of contention between node as possible.Due to
The antenna distance of the multiple adjacent nodes of node edge user distance is not much different, and therefore, can utilize the transmitting day of multiple nodes
Line realizes the higher capacity and transmitting of Radio Link at node edge.
Existing multipoint cooperative (Coordinated Multiple Points transmission and reception,
CoMP) process flow transmitted is：Network side configures measuring assembly, and specific set instruction can be set of cell IDs, also may be used
To be the corresponding more set CSI-RS (Channel Stat Information Reference Resource) of multiple transmission nodes
Set, terminal according to measuring assembly carry out Reference Signal Received Power (Reference Signal Received Power,
RSRP) or Reference Signal Received Quality (Reference Signal Received Quality, RSRQ) or receive signal it is strong
Degree instruction (Received Signal Strength Indicator, RSSI) measures, and later, the measurement result is based on, by net
Network side or terminal determine multipoint cooperative measuring assembly, and the measurement of channel status is carried out based on determining multipoint cooperative measuring assembly
And feedback.
On feedback problem, the prior art to every node disjoint carries out information feedback, and pointing out can be with base
Enhanced in which.Third generation partner program (3rd Generation Partnership Project,
3GPP) in long term evolution (Long Term Evolution, LTE), channel state information is generally comprised but is not limited to following several
Kind：
The characteristic vector information of channel, also known as precoding information.The precoding information is fed back due to the use of code book, is also passed through
Often it is called pre-coding matrix instruction (Precoding Matrix Indicator, PMI) information；
Channel quality information (Channel Quality Information, CQI), characterizes the quality information of channel, to push away
The modulation coding scheme recommended characterizes channel quality, and more the modulation coding scheme of high-order indicates that performance is better, support 16 in LTE altogether
Kind CQI hierarchical selections；
The rank information (Rank Indication, RI) of channel indicates the number of plies for the spatial reuse that channel can be supported, sometimes
It is referred to as the information of layer.RI is positive integer, it is however generally that the value of RI is no more than the number Nt of transmitting antenna.
There are many feedback models in LTE, there is different feedback models under different transmission modes, Closed-Loop Spatial Multiplexing
Under transmission mode, the feedback system of PMI/RI/CQI includes periodic feedback and non-periodic feedback, wherein periodic feedback mainly carries
It is a kind of most common anti-physically in row control channel (Physical Uplink Control Channel, PUCCH)
Feedback, periodic feedback must configure；Non-periodic feedback is carried on Physical Uplink Shared Channel (Physical Uplink
Shared Channel, PUSCH) on, non-periodic feedback is the feedback of irregular triggering type, belongs to the feedback system of auxiliary, is
For putting forward high-precision feedback, expense is generally large.
Based on the prior art, single-point CSI feedback only needs to feed back a CSI, and for multiple spot CSI feedback, it needs to feed back
More parts of CSI, and the transmission technology that CSI is fed back on PUCCH does not enhance, therefore cause feedback quantity very big, specifically：
The CSI of single-point is as shown in Figure 1 the case where 2-1 is fed back in mode on PUCCH, wherein WB PMI indicate wide
The precoding of band indicates that WB abridges for wideband；WB CQI indicate the CQI in broadband；SB CQI indicate that included CQI, SB are
The abbreviation of subband.It should be noted that pattern 2-1 also has a kind of situation, it is RI and PTI (Preoder Type
Indicator) the case where combined coding, it is suitable for 8 antennas.
The CSI of single-point is the case where 1-1 is fed back in mode on PUCCH as shown in Fig. 2, the case where pattern 1-1 is fed back
It is similar with pattern 2-1, there is no SB CQI feedbacks only, it should be noted that pattern 1-1 also has a kind of situation, is suitable for 8 days
The case where line is the first index i1 combined codings of RI and 8 antenna codebooks.
For a kind of situation based on the prior art 2 CSI feedbacks of progress as shown in figure 3, expense is larger, the CSI of more points is anti-
Feedback is similar with 2 points of CSI feedback, and expense can increase more.
It can be seen that since the CSI of present each node is time-division feedback, the period can be caused to double, CSI can be influenced in this way
Real-time, influence the performance of downlink MIMO and COMP.For example, when multiple carrier waves polymerize (CA), each carrier component (CC)
It is also the time-division, is estimated with 5 carrier waves and 3 nodes, the feedback quantity on PUCCH will increase 15 times.
Invention content
In view of this, the main purpose of the present invention is to provide a kind of multidrop channel information feedback method, system and terminal,
Feedback quantity can be reduced, ensures the real-time of CSI, improves system performance.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of multidrop channel information feedback method, including：
Network side is that the period CSI feedback of terminal and/or aperiodic CSI feedback specify N sets to need the channel status fed back
Information CSI, and configure corresponding channel state information reference signals CSI-RS for the CSI and measured for channel state information；
Terminal selects the M sets CSI in the N sets CSI to be fed back, and by the selection information informing network side of CSI, or
Person, network side selects the M ' in N sets CSI to cover CSI, and instruction terminal feeds back the M ' sets CSI, wherein N is more than 1
Natural number, M, M ' be more than zero and no more than N natural number.
The value of the M is prespecified or passes through signal deployment by network side.
The value of the M or M ' is 1 or 2.
The M or M ' be q when, the terminal by CSI select information informing network side for：Terminal usesInformation orA mode bit indicates the CSI of selection, and q is the natural number more than zero and no more than N.
The terminal by CSI select information informing network side for：The terminal passes through the finger in upstream physical layer channel
Show the signaling of CSI selections by the selection information informing network side of CSI.
The terminal by indicate the signalings that select of CSI by CSI select information informing network side for：
The signaling of the instruction CSI selections carries out combined coding with rank information RI, alternatively,
The signaling of the instruction CSI selections and 8 the first precoding of antenna i1 carry out combined coding, alternatively,
The signaling and RI, PTI of the instruction CSI selections carry out combined coding, alternatively,
The signaling and RI of the instruction CSI selections, 8 the first precoding of antenna i1 carry out combined coding.
A kind of multidrop channel information feedback system, including network side and terminal, wherein
The network side, for for terminal period CSI feedback and/or aperiodic CSI feedback specify N sets to need to feed back
CSI, and configure corresponding CSI-RS for the CSI and measured for channel state information；
The selection information of CSI for selecting the M sets CSI in the N sets CSI to be fed back, and is informed net by the terminal
Network side, wherein N is the natural number more than 1, and M is the natural number more than zero and no more than N.
The value of the M is prespecified or passes through signal deployment by network side.
The M be q when, the terminal by CSI select information informing network side for：Terminal usesLetter
Breath orA mode bit indicates the CSI of selection.
The terminal by CSI select information informing network side for：The terminal passes through the finger in upstream physical layer channel
Show the signaling of CSI selections by the selection information informing network side of CSI.
The terminal by indicate the signalings that select of CSI by CSI select information informing network side for：
The signaling of the instruction CSI selections carries out combined coding with rank information RI, alternatively,
The signaling of the instruction CSI selections and 8 the first precoding of antenna i1 carry out combined coding, alternatively,
The signaling and RI, PTI of the instruction CSI selections carry out combined coding, alternatively,
The signaling and RI of the instruction CSI selections, 8 the first precoding of antenna i1 carry out combined coding.
A kind of multidrop channel information feedback system, including network side and terminal, wherein
The network side, for for terminal period CSI feedback and/or aperiodic CSI feedback specify N sets to need to feed back
CSI, and configure corresponding CSI-RS for the CSI and measured for channel state information；And M ' the sets in selection N sets CSI
CSI, instruction terminal feed back the M ' sets CSI；
The terminal, for being fed back to the M ' sets CSI according to the instruction of network side, wherein N is oneself more than 1
So number, M ' are the natural number more than zero and no more than N.
A kind of multidrop channel information feedback terminal, including：Selecting unit, feedback unit and notification unit；Wherein,
The selecting unit, for specifying N sets in the period CSI feedback and/or aperiodic CSI feedback that network side is terminal
The channel state information CSI fed back is needed, and configures corresponding channel state information reference signals CSI-RS for the CSI and is used for
Under the scene that channel state information measures, the M in N sets CSI is selected to cover CSI, wherein N is the natural number more than 1, and M is more than zero
And the natural number no more than N；
The feedback unit, the M sets CSI for selecting the selecting unit are fed back；
The notification unit is used for the selection information informing network side of the CSI.
The M be q when, the terminal by CSI select information informing network side for：Terminal usesLetter
Breath orA mode bit indicates the CSI of selection.
The notification unit by CSI select information informing network side for：The terminal passes through in upstream physical layer channel
Instruction CSI selections signaling by the selection information informing network side of CSI.
The notification unit by indicate CSI select signaling by CSI select information informing network side for：
The signaling of the instruction CSI selections carries out combined coding with rank information RI, alternatively,
The signaling of the instruction CSI selections and 8 the first precoding of antenna i1 carry out combined coding, alternatively,
The signaling and RI, PTI of the instruction CSI selections carry out combined coding, alternatively,
The signaling and RI of the instruction CSI selections, 8 the first precoding of antenna i1 carry out combined coding.
A kind of multidrop channel information feedback terminal, for being fed back to M ' sets CSI according to the instruction of network side, wherein
Network side is the period CSI feedback of terminal and/or aperiodic CSI feedback specify N sets need the CSI that feeds back, N be more than 1 from
So number, M ' are the natural number more than zero and no more than N.
Multidrop channel information feedback method, system and terminal of the present invention, network side be terminal period CSI feedback and/or
Aperiodic CSI feedback specifies N sets to need the channel state information CSI fed back, and configures corresponding channel status letter for the CSI
Reference signal CSI-RS is ceased to measure for channel state information；Terminal selects the M sets CSI in the N sets CSI to be fed back, and
By the selection information informing network side of CSI, alternatively, the M ' in network side selection N sets CSI covers CSI, and instruction terminal is to the M '
Set CSI is fed back, wherein N is natural number more than 1, M, M ' it is natural number more than zero and no more than N.Through the invention,
Reduce feedback quantity, ensure that the real-time of CSI, improve system performance.
Description of the drawings
Fig. 1 is the CSI of single-point schematic diagram the case where 2-1 is fed back in mode on PUCCH in the prior art；
Fig. 2 is the CSI of single-point schematic diagram the case where 1-1 is fed back in mode on PUCCH in the prior art；
Fig. 3 is a kind of situation schematic diagram that 2 CSI feedbacks are carried out based on the prior art；
Fig. 4 is multidrop channel information feedback method flow diagram of the present invention.
Specific implementation mode
The present invention basic thought be：Network side is that the period CSI feedback of terminal and/or aperiodic CSI feedback specify N sets
The channel state information CSI fed back is needed, and configures corresponding channel state information reference signals CSI-RS for the CSI and is used for
Channel state information measures；Terminal selects the M sets CSI in the N sets CSI to be fed back, and the selection information of CSI is informed net
Network side, alternatively, the M ' in network side selection N sets CSI covers CSI, and instruction terminal feeds back the M ' sets CSI, wherein N
For the natural number more than 1, M, M ' be more than zero and no more than N natural number..
Fig. 4 is multidrop channel information feedback method flow diagram of the present invention, as shown in Figure 1, this method includes：
Step 401：Network side is that the period CSI feedback of terminal and/or aperiodic CSI feedback specify N sets to need to feed back
CSI, and configure corresponding channel state information reference signals (CSI-RS) for the CSI and measured for channel state information.
Step 402：Terminal selects the M sets CSI in the N sets CSI to be fed back, and the selection information of CSI is informed net
Network side, alternatively, the M ' in network side selection N sets CSI covers CSI, and instruction terminal feeds back the M ' sets CSI, wherein N
For the natural number more than 1, M, M ' be more than zero and no more than N natural number.
It should be noted that the value of the M is prespecified or passes through signal deployment by network side.
It should be noted that after the M ' in network side selection N sets CSI covers CSI, instruction terminal carries out the M ' sets CSI
Feedack can be transmitted in down physical layer control channel, and be placed on one with the indication signaling of triggering non-periodic feedback
Can be further the mode of bitmap in a reporting format.
When M or M ' is q, UE can be usedInformation orA mode bit indicates that the CSI of selection, q are big
In zero and no more than N natural number.
Preferably, the value of M or M ' is 1 or 2, and under the scene that N is 3, when M is 1, UE can be usedLetter
Breath or N number of mode bit indicate the CSI of selection, and when M is 2, UE can useInformation or N number of mode bit refer to
Show the CSI of selection.
For step 402, terminal can be by the signalings of the instruction CSI selections in upstream physical layer channel by the choosing of CSI
Select information informing network side.
Here, the terminal is by indicating that the signalings that select of CSI can be for by the information informing network side that selects of CSI：
The signaling of the instruction CSI selections carries out combined coding with rank information RI, alternatively,
The signaling of the instruction CSI selections and 8 the first precoding of antenna i1 carry out combined coding, alternatively,
The signaling and RI, PTI of the instruction CSI selections carry out combined coding, alternatively,
The signaling and RI of the instruction CSI selections, 8 the first precoding of antenna i1 carry out combined coding.
The present invention also correspondingly proposes a kind of multidrop channel information feedback system, which includes：Network side and terminal,
Wherein,
The network side, for for terminal period CSI feedback and/or aperiodic CSI feedback specify N sets to need to feed back
CSI, and configure corresponding CSI-RS for the CSI and measured for channel state information；
The selection information of CSI for selecting the M sets CSI in the N sets CSI to be fed back, and is informed net by the terminal
Network side, wherein N is the natural number more than 1, and M is the natural number more than zero and no more than N.
The value of the M is prespecified or passes through signal deployment by network side.
The M be q when, the terminal by CSI select information informing network side for：Terminal usesLetter
Breath orA mode bit indicates the CSI of selection.
The terminal by CSI select information informing network side for：The terminal passes through the finger in upstream physical layer channel
Show the signaling of CSI selections by the selection information informing network side of CSI.
The terminal by indicate the signalings that select of CSI by CSI select information informing network side for：
The signaling of the instruction CSI selections carries out combined coding with rank information RI, alternatively,
The signaling of the instruction CSI selections and 8 the first precoding of antenna i1 carry out combined coding, alternatively,
The signaling and RI, PTI of the instruction CSI selections carry out combined coding, alternatively,
The signaling and RI of the instruction CSI selections, 8 the first precoding of antenna i1 carry out combined coding.
The present invention also correspondingly proposes a kind of multidrop channel information feedback system, which includes network side and terminal,
Wherein,
The network side, for for terminal period CSI feedback and/or aperiodic CSI feedback specify N sets to need to feed back
CSI, and configure corresponding CSI-RS for the CSI and measured for channel state information；And M ' the sets in selection N sets CSI
CSI, instruction terminal feed back the M ' sets CSI；
The terminal, for being fed back to the M ' sets CSI according to the instruction of network side, wherein N is oneself more than 1
So number, M ' are the natural number more than zero and no more than N.
The present invention also correspondingly proposes a kind of multidrop channel information feedback terminal, the multidrop channel information feedback terminal packet
It includes：Selecting unit, feedback unit and notification unit；Wherein,
The selecting unit, for specifying N sets in the period CSI feedback and/or aperiodic CSI feedback that network side is terminal
The channel state information CSI fed back is needed, and configures corresponding channel state information reference signals CSI-RS for the CSI and is used for
Under the scene that channel state information measures, the M in N sets CSI is selected to cover CSI, wherein N is the natural number more than 1, and M is more than zero
And the natural number no more than N；
The feedback unit, the M sets CSI for selecting the selecting unit are fed back；
The notification unit is used for the selection information informing network side of the CSI.
The M be q when, the terminal by CSI select information informing network side for：Terminal usesLetter
Breath orA mode bit indicates the CSI of selection.
The notification unit by CSI select information informing network side for：The terminal passes through in upstream physical layer channel
Instruction CSI selections signaling by the selection information informing network side of CSI.
The notification unit by indicate CSI select signaling by CSI select information informing network side for：
The signaling of the instruction CSI selections carries out combined coding with rank information RI, alternatively,
The signaling of the instruction CSI selections and 8 the first precoding of antenna i1 carry out combined coding, alternatively,
The signaling and RI, PTI of the instruction CSI selections carry out combined coding, alternatively,
The signaling and RI of the instruction CSI selections, 8 the first precoding of antenna i1 carry out combined coding.
The present invention also correspondingly proposes a kind of multidrop channel information feedback terminal, which is used for according to network side
Instruction to M ' set CSI feed back, wherein network side be terminal period CSI feedback and/or aperiodic CSI feedback specify N
It is the natural number more than 1 that set, which needs the CSI fed back, N, and M ' is the natural number more than zero and no more than N.
Technical scheme of the present invention is described in further detail with reference to specific embodiment.
Embodiment 1
Base station is configured with 3 sets of CSI-RS to UE, and general each node configures 1 set of CSI, but there are also other situations.UE
Measured according to the rules according to this 3 sets of CSI-RS, and according to high-rise configuration parameter, obtain three sets of CSI, CSI include RI,
It is one or more in CQI, PMI.
UE can select best a set of in 3 sets of CSI, be fed back, for example, having selected the 1st set of CSI.
UE can be that first set CSI progress feedacks are transferred to base station by PUCCH selection, for example, passing through
2bit, the control signaling of 4 states, particular state are as shown in table 1：
| 00 | Select first set CSI |
| 01 | Select second set of CSI |
| 10 | Third is selected to cover CSI |
| 11 | Retain |
Table 1
UE can increase a Report Type to feed back this 2bit signaling.
Embodiment 2
Base station is configured with 3 sets of CSI-RS to UE, and general each node configures 1 set of CSI, but there are also other situations.UE
Measured according to the rules according to this 3 sets of CSI-RS, and according to high-rise configuration parameter, obtain three sets of CSI, CSI include RI,
It is one or more in CQI, PMI.
UE can select best a set of in 3 sets of CSI, be fed back, for example, having selected the 1st set of CSI.
UE can be that the instruction information that first set CSI is fed back is transferred to base station, such as 4 by PUCCH selection
The control signaling of a state is similar to Example 1.
Above-mentioned instruction information can carry out combined coding with the RI of this set of CSI of selection.For COMP, Duo Gejie
The case where point is typically all low-rank, therefore the case where for needing multiple spot to feed back, the value that can limit RI is { 1,2 }, then
The state that combined coding is related to can be as shown in table 2：
| 000 | Select the 1st set of CSI, RI=1 |
| 001 | Select the 1st set of CSI, RI=2 |
| 010 | Select the 2nd set of CSI, RI=1 |
| 011 | Select the 2nd set of CSI, RI=2 |
| 100 | Select the 3rd set of CSI, RI=1 |
| 101 | Select the 3rd set of CSI, RI=2 |
| 110 | Select the 4th set of CSI, RI=1 |
| 111 | Select the 4th set of CSI, RI=2 |
Table 2
Embodiment 3
In the present embodiment, instruction information can together with RI, PTI combined coding, concrete condition it is as shown in table 3：
| 0000 | Select the 1st set of CSI, RI=1, PTI=0 |
| 0001 | Select the 1st set of CSI, RI=1, PTI=1 |
| 0010 | Select the 1st set of CSI, RI=2, PTI=0 |
| 0011 | Select the 1st set of CSI, RI=2, PTI=1 |
| 0100 | Select the 2nd set of CSI, RI=1, PTI=0 |
| 0101 | Select the 2nd set of CSI, RI=1, PTI=1 |
| 0110 | Select the 2nd set of CSI, RI=2, PTI=0 |
| 0111 | Select the 2nd set of CSI, RI=2, PTI=1 |
| 1000 | Select the 3rd set of CSI, RI=1, PTI=0 |
| 1001 | Select the 3rd set of CSI, RI=1, PTI=1 |
| 1010 | Select the 3rd set of CSI, RI=2, PTI=0 |
| 1011 | Select the 3rd set of CSI, RI=2, PTI=1 |
| 1100 | Select the 4th set of CSI, RI=1, PTI=0 |
| 1101 | Select the 4th set of CSI, RI=1, PTI=1 |
| 1110 | Select the 4th set of CSI, RI=2, PTI=0 |
| 1111 | Select the 4th set of CSI, RI=2, PTI=1 |
Table 3
Embodiment 4
It is similar to Example 2, selected cell for 8 antenna when, instruction information can together with RI, i1 combined coding.Limit
RI=1 processed, 2, RI+i1 be at present 4 bit, can increase by the instruction information of 2 bit.
Embodiment 5
Base station is configured with 3 sets of CSI-RS to UE, and general each node configures 1 set of CSI, but there are also other situations.UE
Measured according to the rules according to this 3 sets of CSI-RS, and according to high-rise configuration parameter, obtain three sets of CSI, CSI include RI,
It is one or more in CQI, PMI.
UE can select best in 3 sets of CSI two sets, be fed back, for example, having selected the 1st, 2 set of CSI.
UE can be that first set CSI progress feedacks are transferred to base station by PUCCH, for example pass through selection
2bit, the control signaling of 4 states, particular state are as shown in table 4：
| 00 | Selection first, two sets of CSI |
| 01 | Selection second, three sets of CSI |
| 10 | Selection first, three sets of CSI |
| 11 | Retain |
Table 4
Embodiment 6
Base station is configured with 2 sets of CSI-RS to UE, and general each node configures 1 set of CSI, but there are also other situations.UE
Measured according to the rules according to this 2 sets of CSI-RS, and according to high-rise configuration parameter, obtain 2 sets of CSI, CSI include RI,
It is one or more in CQI, PMI.
UE can select best in 2 sets of CSI 1 set, be fed back, for example, having selected the 1st set of CSI.
UE can be that first set CSI progress feedacks are transferred to base station by PUCCH, for example pass through selection
1bit, the control signaling of 2 states, particular state are as shown in table 5：
| 00 | Select the 1st set of CSI |
| 01 | Select the 2nd set of CSI |
Table 5
Embodiment 7
Base station can notify, to UE, to inform that it should cover CSI kinds from N and select how many sets to feed back by RRC signaling.
Embodiment 8
Base station can be that UE is configured with 4 sets of CSI-RS by high-level signaling, and general each node configures 1 set of CSI, but also has one
Other a little situations.
Base station can further be pointed out by signaling, and when non-periodic feedback, it is which set CSI-RS be based on to measure every time
's：
For example, triggering primary aperiodic CSI feedback by signaling, and indicate to be specifically to measure which set CSI-RS is corresponded to
CSI：
Indication signaling can be the mode of bitmap, such as 4 sets of CSI-RS herein, it is therefore desirable to 4bit indication signalings, it can be with
It is transmitted together with the triggering signaling of aperiodic CSI feedback：
For example, the 1st set of CSI feedback of triggering, can be 0001 instruction, 1,3 sets of CSI feedbacks are triggered, can be 0101, triggering
2nd set can be 0010.
After terminal obtains instruction, according to the instruction of base station, corresponding CSI information is measured and fed back.
The preferred implementation case that these are only the present invention, is not intended to restrict the invention, the present invention can also have other
Various embodiments, without deviating from the spirit and substance of the present invention, those skilled in the art can be according to this hairs
It is bright to make various corresponding change and deformations, but these corresponding change and deformations should all belong to appended claims of the invention
Protection domain.
Obviously, those skilled in the art should be understood that each module of the above invention or each step can be with general
Computing device realize that they can be concentrated on a single computing device, or be distributed in multiple computing devices and formed
Network on, optionally, they can be realized with the program code that computing device can perform, it is thus possible to which they are stored
It is performed by computing device in the storage device, and in some cases, it can be with different from shown in sequence execution herein
The step of going out or describing, either they are fabricated to each integrated circuit modules or by them multiple modules or
Step is fabricated to single integrated circuit module to realize.In this way, the present invention is not limited to any specific hardware and softwares to combine.
Claims (15)
1. a kind of multidrop channel information feedback method, which is characterized in that this method includes：
Network side is that the period CSI feedback of terminal and/or aperiodic CSI feedback specify N sets to need the channel state information fed back
CSI, and configure corresponding channel state information reference signals CSI-RS for the CSI and measured for channel state information；
Terminal selects the M sets CSI in the N sets CSI to be fed back, and by the selection information informing network side of CSI, alternatively, net
Network side selects the M ' in N sets CSI to cover CSI, and instruction terminal feeds back the M ' sets CSI, wherein N is the nature more than 1
Number, M, M ' be more than zero and no more than N natural number.
2. multidrop channel information feedback method according to claim 1, which is characterized in that the value of the M is prespecified
Or signal deployment is passed through by network side.
3. multidrop channel information feedback method according to claim 1, which is characterized in that the value of the M or M ' be 1 or
2。
4. multidrop channel information feedback method according to claim 1, which is characterized in that described when the M or M ' is q
Terminal by CSI select information informing network side for：Terminal usesInformation orA mode bit indicates to select
The CSI selected, q are the natural number more than zero and no more than N.
5. multidrop channel information feedback method according to any one of claims 1 to 4, which is characterized in that the terminal will
CSI select information informing network side for：The terminal will by the signaling of the instruction CSI selections in upstream physical layer channel
The selection information informing network side of CSI.
6. multidrop channel information feedback method according to claim 5, which is characterized in that the terminal is by indicating CSI
The signaling selected by CSI select information informing network side for：
The signaling of the instruction CSI selections carries out combined coding with rank information RI, alternatively,
The signaling of the instruction CSI selections and 8 the first precoding of antenna i1 carry out combined coding, alternatively,
The signaling and RI, PTI of the instruction CSI selections carry out combined coding, alternatively,
The signaling and RI of the instruction CSI selections, 8 the first precoding of antenna i1 carry out combined coding.
7. a kind of multidrop channel information feedback system, which is characterized in that the system includes network side and terminal, wherein
The network side, for for terminal period CSI feedback and/or aperiodic CSI feedback specify N sets to need the CSI that feeds back,
And it configures corresponding CSI-RS for the CSI and is measured for channel state information；
The terminal, for selecting the M sets CSI in N set CSI to be fed back, and by the selection information informing network of CSI
Side, wherein N is the natural number more than 1, and M is the natural number more than zero and no more than N.
8. multidrop channel information feedback system according to claim 7, which is characterized in that the value of the M is prespecified
Or signal deployment is passed through by network side.
9. multidrop channel information feedback system according to claim 7, which is characterized in that when the M is q, the terminal
By CSI select information informing network side for：Terminal usesInformation orA mode bit indicates selection
CSI。
10. multidrop channel information feedback system according to any one of claims 7 to 9, which is characterized in that the terminal will
CSI select information informing network side for：The terminal will by the signaling of the instruction CSI selections in upstream physical layer channel
The selection information informing network side of CSI.
11. multidrop channel information feedback system according to claim 10, which is characterized in that the terminal passes through instruction
The signaling that CSI is selected by CSI select information informing network side for：
The signaling of the instruction CSI selections carries out combined coding with rank information RI, alternatively,
The signaling of the instruction CSI selections and 8 the first precoding of antenna i1 carry out combined coding, alternatively,
The signaling and RI, PTI of the instruction CSI selections carry out combined coding, alternatively,
The signaling and RI of the instruction CSI selections, 8 the first precoding of antenna i1 carry out combined coding.
12. a kind of multidrop channel information feedback terminal, which is characterized in that the multidrop channel information feedback terminal includes：Selection is single
Member, feedback unit and notification unit；Wherein,
The selecting unit, for specifying N sets to need in the period CSI feedback and/or aperiodic CSI feedback that network side is terminal
The channel state information CSI of feedback, and configure corresponding channel state information reference signals CSI-RS for the CSI and be used for channel
Under the scene of status information measurement, the M in N sets CSI is selected to cover CSI, wherein N is the natural number more than 1, and M is more than zero and not
Natural number more than N；
The feedback unit, the M sets CSI for selecting the selecting unit are fed back；
The notification unit is used for the selection information informing network side of the CSI.
13. multidrop channel information feedback terminal according to claim 12, which is characterized in that when the M is q, the end
End by CSI select information informing network side for：Terminal usesInformation orA mode bit indicates to select
CSI.
14. multidrop channel information feedback terminal according to claim 13, which is characterized in that the notification unit is by CSI
Select information informing network side for：The terminal is by the signaling of the instruction CSI selections in upstream physical layer channel by CSI's
Select information informing network side.
15. multidrop channel information feedback terminal according to claim 13, which is characterized in that the notification unit passes through finger
Show CSI select signaling by CSI select information informing network side for：
The signaling of the instruction CSI selections carries out combined coding with rank information RI, alternatively,
The signaling of the instruction CSI selections and 8 the first precoding of antenna i1 carry out combined coding, alternatively,
The signaling and RI, PTI of the instruction CSI selections carry out combined coding, alternatively,
The signaling and RI of the instruction CSI selections, 8 the first precoding of antenna i1 carry out combined coding.
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| CN201110296264.2A CN102377469B (en) | 2011-09-30 | 2011-09-30 | A kind of multidrop channel information feedback method, system and terminal |
| PCT/CN2011/083847 WO2012151988A1 (en) | 2011-09-30 | 2011-12-12 | Multi-point channel information feedback method, system and terminal |
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Families Citing this family (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9973955B2 (en) | 2012-03-16 | 2018-05-15 | Futurewei Technologies, Inc. | Systems and methods for reference signals and CSI feedback |
| CN103326837A (en) * | 2012-03-19 | 2013-09-25 | 上海贝尔股份有限公司 | Method and device used for managing multipoint coordination |
| CN103368699B (en) * | 2012-04-01 | 2017-12-19 | 中兴通讯股份有限公司 | Channel condition information CSI feedback method and device |
| JP2013219507A (en) * | 2012-04-06 | 2013-10-24 | Ntt Docomo Inc | Radio communication method, local area base station device, mobile terminal device, and radio communication system |
| CN103391150B (en) * | 2012-05-10 | 2018-05-08 | 中兴通讯股份有限公司 | The collocation method of CSI-RS, method, base station and the terminal for measuring channel |
| CN110266432B (en) * | 2012-05-11 | 2021-11-19 | 华为技术有限公司 | Method, UE, base station and system for triggering aperiodic feedback of channel state information |
| WO2013166714A1 (en) * | 2012-05-11 | 2013-11-14 | Nokia Corporation | Complexity restricted feedback for cooperative multipoint operation |
| WO2013166624A1 (en) * | 2012-05-11 | 2013-11-14 | 华为技术有限公司 | Method, ue, base station, and system for triggering channel state information non-periodic feedback |
| KR101791396B1 (en) | 2012-06-18 | 2017-10-27 | 후지쯔 가부시끼가이샤 | Method for feeding back channel state information, ue and system |
| CN111082895B (en) | 2012-06-18 | 2022-10-14 | 富士通互联科技有限公司 | Triggering method and device for aperiodic feedback in coordinated multipoint transmission |
| CN103546207B (en) * | 2012-07-09 | 2018-10-16 | 中兴通讯股份有限公司 | CSI-RS acquisitions, CSI-RS report methods and device |
| EP2899909B1 (en) | 2012-09-26 | 2021-04-14 | Huawei Technologies Co., Ltd. | Channel state information measurement method, device and system |
| CN103858501A (en) * | 2012-09-26 | 2014-06-11 | 华为技术有限公司 | CSI-RS resource combination feedback method and device, user equipment and base station |
| CN107659350A (en) * | 2012-09-28 | 2018-02-02 | 华为技术有限公司 | Channel condition information process handling method, the network equipment and user equipment |
| WO2014047909A1 (en) * | 2012-09-28 | 2014-04-03 | 华为技术有限公司 | Aperiodic csi feedback processing method and device |
| CN109905222A (en) * | 2012-11-12 | 2019-06-18 | 华为技术有限公司 | Method, user equipment and the base station of reporting status information of channel |
| EP2790332B1 (en) * | 2013-04-08 | 2019-09-11 | Acer Incorporated | Communication station with elevation beamforming and related communication device |
| CN104735691B (en) * | 2013-12-20 | 2019-11-08 | 北京三星通信技术研究有限公司 | The method and device that channel state information is reported |
| CN104202073A (en) * | 2014-03-04 | 2014-12-10 | 中兴通讯股份有限公司 | Channel information feedback method, pilot frequency and wave beam transmitting methods, systems and devices |
| CN106465097A (en) * | 2014-05-22 | 2017-02-22 | 高通股份有限公司 | Periodic and aperiodic channel state information (CSI) reporting for MIMO |
| CN106685617A (en) * | 2015-11-06 | 2017-05-17 | 中兴通讯股份有限公司 | Channel state information feedback method and measurement pilot frequency configuration method and device |
| CN107743042A (en) * | 2016-08-11 | 2018-02-27 | 华为技术有限公司 | A kind of method and device of channel state feedback |
| WO2018028687A1 (en) * | 2016-08-11 | 2018-02-15 | 华为技术有限公司 | Method and device for channel state feedback |
| CN107733476B (en) * | 2016-08-12 | 2021-06-22 | 中兴通讯股份有限公司 | Feedback method and device of channel state information |
| CN107888264B (en) * | 2016-09-30 | 2022-12-30 | 中兴通讯股份有限公司 | Feedback method and device of channel information |
| WO2018058600A1 (en) * | 2016-09-30 | 2018-04-05 | Qualcomm Incorporated | Advanced channel state information feedback design |
| CN113922855B (en) * | 2017-09-29 | 2023-10-31 | 中兴通讯股份有限公司 | Feedback method of channel state information, information transmission method and device |
| CN116980961A (en) | 2017-11-29 | 2023-10-31 | 中兴通讯股份有限公司 | Triggering method and device for measurement report |
| CN116800312A (en) * | 2022-03-18 | 2023-09-22 | 华为技术有限公司 | Channel state information transmission method, communication device and communication equipment |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100135385A (en) * | 2009-06-17 | 2010-12-27 | 오재언 | Method of transmitting control signal in wireless communicatino system |
| CN102056220B (en) * | 2009-10-28 | 2014-02-19 | 华为技术有限公司 | Method and device for realizing channel measurement |
| CN102118863B (en) * | 2009-12-31 | 2014-12-10 | 华为技术有限公司 | Methods and devices for feeding back channel state information and determining multi-point cooperation mode |
| CN102201897B (en) * | 2011-04-29 | 2017-09-15 | 中兴通讯股份有限公司 | Channel condition information processing method, apparatus and system |
-
2011
- 2011-09-30 CN CN201110296264.2A patent/CN102377469B/en active Active
- 2011-12-12 WO PCT/CN2011/083847 patent/WO2012151988A1/en active Application Filing
Non-Patent Citations (1)
| Title |
|---|
| 3GPP TR36.819v1.2.0;3GPP;《3GPP TSG RAN WG1 Meeting》;20110920;全文 * |
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