CN101702632B - Periodic channel state information feedback method and system - Google Patents
Periodic channel state information feedback method and system Download PDFInfo
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- CN101702632B CN101702632B CN200910235908.XA CN200910235908A CN101702632B CN 101702632 B CN101702632 B CN 101702632B CN 200910235908 A CN200910235908 A CN 200910235908A CN 101702632 B CN101702632 B CN 101702632B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
- H04L1/001—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding applied to control information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/003—Adaptive formatting arrangements particular to signalling, e.g. variable amount of bits
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Abstract
The invention discloses a periodic channel state information feedback method comprising the following steps: determining the bit number of the periodic channel state information needing to be fed back as well as the coded target length by a terminal; judging that the bit number of the periodic channel state information needing to be fed back is not more than the preset threshold value, then coding by adopting the mode of linear block code and intercepting the coded information according to the determined coded target length, or coding by adopting the mode of tail biting convolutional code, and intercepting the coded information according to the determined coded target length; and modulating the intercepted coded information by the terminal and transmitting on an antenna port. The invention correspondingly discloses a channel state information feedback system. The invention has no limitation to the load of the channel state information, thus the application range is wider. The linear block code adopted by the invention can obtain maximum coding gain, thus optimizing the performances.
Description
Technical field
The present invention relates to digital communicating field, relate in particular to a kind of periodic channel state information feedback method and system.
Background technology
At long evolving system (Long Term Evolution, LTE) in, information (the Channel State Information of reflection down physical channel state, CSI) there are three kinds of forms: channel quality indication (Channelsquality indication, CQI), pre-coding matrix indication (Pre-coding Matrix Indicator, PMI), order indication (Rank Indicator, RI).
React different CQI by different modulation and code rate, be divided into 16 kinds of situations, can adopt 4 bit informations to represent, the relation between CQI index and modulation coding mode (MCS) is as shown in table 1:
Table 1
PMI refers to only under this emission mode of Closed-Loop Spatial Multiplexing, terminal (User Equipment, UE) tell base station (eNode B according to the channel quality recording, eNB) should carry out precoding to the Physical Downlink Shared Channel (PDSCH) of issuing this UE with which type of pre-coding matrix, RI is the number of plies to base station feedback downlink transfer for UE.
In LTE system, the feedback of CQI/PMI, RI can be periodic feedback, can be also acyclic feedback, and table 2 feeds back corresponding uplink physical channel for periodic feedback and aperiodicity:
| Scheduling method | Periodically CQI reporting channel | Aperiodicity CQI reporting channel |
| Frequency is non-selective | PUCCH | |
| Frequency selectivity | PUCCH | PUSCH |
Table 2
Wherein, for the CQI/PMI or RI of periodic feedback, if UE does not need to send data, the CQI/PMI of periodic feedback, RI row control channel (Physical Uplink ControlChannel physically, PUCCH) upper with form 2/2a/2b (PUCCH format2/2a/2b) transmission (in LTE system, the transformat of PUCCH as shown in Figure 1), if when UE need to send data, CQI/PMI, RI transmit in row shared channel (Physical Uplink Shared Channel, PUSCH) physically; For CQI/PMI, the RI of aperiodicity feedback, only on PUSCH, transmit.
In LTE system, under different transmission modes, the periodicity CQI/PMI of PUCCH channel, the load of RI (payload size) difference, maximum load is 11 bits.When periodic feedback, first adopt Reed-Muller (20, M (M <=11) bit CQI, the PMI that A) will feed back or RI coding, then modulate the bit after coding, with the form transmission of PUCCH form 2/2a/2b.
As advanced long-term evolution system (the Long Term Evolution Advanced of the evolution standard of LTE, LTE-A) need to support larger system bandwidth (reaching as high as 100MHz), and need to improve the spectrum efficiency of average spectral efficiency (ase) and Cell Edge User, for this reason, LTE-A system has been introduced a lot of new technologies:
(1) carrier aggregation (Carrier Aggregation, CA).This technology is exactly on the basis of LTE system, and component carrier (Component Carrier, CC) is merged and obtains larger bandwidth, and therefore UE need to feed back the channel condition information of multiple descending CC;
(2) descending high-order multiple-input and multiple-output (Multiple Input Multiple Output, MIMO).LTE system descending is supported at most 4 antenna transmission, and the introducing of high-order mimo makes LTE-A system descending support at most the transmission of 8 antennas, and the dimension of channel state matrix is increased;
(3) cooperative multipoint transmission (Coordinated multiple point transmission, CoMP).This technology is exactly to utilize the cooperation transmission of multiple communities transmitting antenna, and UE may need to feed back the channel condition information of multiple communities.
The introducing of above 3 kinds of technology, can make the load of the channel condition information of periodic feedback under some patterns be greater than 11 bits.
In addition, in order to obtain higher peaks spectrum efficiency, in LTE-A system, many transmit antennas of up support, consider that transmission diversity mode can improve the reliability of transmission, improve and receive the signal to noise ratio of signal, thus many companies for the discussion of PUCCH transmission pattern all based on transmission diversity mode.The mode of transmission diversity is a lot, wherein with orthogonal space resource transmission diversity (SpaceOrthogonal-Resource Transmit Diversity, SORTD) mode best performance, which is exactly to use different orthogonal resources on different antennas, to transmit identical control signal, thereby acquisition diversity gain, but this mode is only suitable for the situation that the load of channel condition information is less than 11 bits, and according to describing before, the load of having introduced LTE-A system channel condition information of periodic feedback under some patterns of multinomial new technology can be greater than 11 bits, so, being of limited application of SORTD mode, and the coded system using due to this mode is Reed-Muller (20, A), so can not obtain maximum coding gain.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of periodic channel state information feedback method and system, and range of application is wider, and can obtain larger coding gain.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of periodic channel state information feedback method, comprising:
Terminal is determined the bit number of the periodical channel state information that needs feedback, and coding target length afterwards;
Described in terminal judges, need the bit number of the periodical channel state information of feedback to be not more than predefined threshold value, adopt the mode of linear block codes to encode to periodical channel state information, and according to the information after the target length intercepting encode after determined coding; Described in terminal judges, need the bit number of the periodical channel state information of feedback to be greater than predefined threshold value, adopt the mode of tail-biting convolutional code to encode to periodical channel state information, and according to the information after the target length intercepting encode after determined coding;
The information of terminal after to the coding of described intercepting is modulated, and the symbol after modulation is transmitted on antenna port.
The bit number of described definite periodical channel state information that needs feedback is: the channel condition information of feedback as required, the bit number of definite periodical channel state information that needs feedback.
Target length after described definite coding is:
The product of the information number of carrying while determining transmit antenna port number and PUCCH channelizing is the modulation symbol number that all antennas can carry;
The product of determining the order of modulation of modulation symbol number that described all antennas can carry and periodical channel state information is the target length after coding.
The tail-biting convolutional code of described employing is: constraint length is 7, the tail-biting convolutional code that code check is 1/3.
Described predefined threshold value is 11 or 12 or 13.
A kind of periodical channel state information reponse system, comprise: periodical channel state information provides unit, parameter that unit, judging unit, linear block codes coding unit, tail-biting convolutional code coding unit, modulation & transmission unit are provided, wherein
Described periodical channel state information provides unit, for the periodical channel state information that needs feedback is provided;
Described parameter provides unit, for providing periodical channel state information to feed back relevant parameter; And the periodical channel state information of the needs feedback that unit provides is provided according to periodical channel state information, determine the bit number of the periodical channel state information that needs feedback, and determine the target length after coding;
Described judging unit, for providing unit to provide and definite parameter according to parameter, whether the bit number that judges the periodical channel state information that needs feedback is not more than predefined threshold value, and in the time that the bit number of the periodical channel state information of needs feedbacks is not more than predefined threshold value, notice linear block codes coding unit; When the bit number of the periodical channel state information feeding back at needs is greater than predefined threshold value, notice tail-biting convolutional code coding unit;
Described linear block codes coding unit, for receiving after the notice of judging unit, adopt the mode of linear block codes to provide the periodical channel state information that unit provides to encode to periodical channel state information, provide the information after the determined coding in unit target length intercepting encode afterwards according to parameter, and the information after the coding of described intercepting is sent to modulation & transmission unit;
Described tail-biting convolutional code coding unit, for receiving after the notice of judging unit, adopt the mode of tail-biting convolutional code to provide the periodical channel state information that unit provides to encode to periodical channel state information, provide the information after the determined coding in unit target length intercepting encode afterwards according to parameter, and the information after the coding of described intercepting is sent to modulation & transmission unit;
Described modulation & transmission unit, modulates for the information after the coding of the intercepting to from linear block codes coding unit or tail-biting convolutional code coding unit, and the symbol after modulation is transmitted on antenna port.
The bit number that described parameter provides unit to determine the periodical channel state information that needs feedback is: the channel condition information that parameter provides unit to feed back as required, the bit number of definite periodical channel state information that needs feedback.
Described parameter provides unit to determine that the target length after coding is:
The product of the information number of carrying when parameter provides unit to determine transmit antenna port number and PUCCH channelizing is the modulation symbol number that all antennas can carry;
It is the target length after coding that parameter provides the product of the order of modulation of modulation symbol number that unit determines that described all antennas can carry and periodical channel state information.
Described tail-biting convolutional code coding unit, also for receiving after the notice of judging unit, adopting constraint length is 7, the mode of the tail-biting convolutional code that code check is 1/3, provides the channel condition information that unit provides to encode to periodical channel state information.
It is 11 or 12 or 13 that described parameter provides the predefined threshold value that unit provides.
Periodic channel state information feedback method of the present invention and system, need the bit number of the periodical channel state information of feedback to be not more than predefined threshold value, adopt the mode of linear block codes to encode, otherwise, adopt the mode of tail-biting convolutional code to encode, finally the symbol after modulation is transmitted at antenna port.The present invention does not limit the load of channel condition information, so range of application of the present invention is wider; In addition, the linear block codes that the present invention adopts can obtain maximum coding gain, thereby makes best performance.
Accompanying drawing explanation
Fig. 1 is the transformat schematic diagram of PUCCH in LTE system;
Fig. 2 is periodic channel state information feedback method schematic flow sheet of the present invention;
Fig. 3 is that constraint length is 7, the structural representation of the tail-biting convolutional code that code check is 1/3;
Fig. 4 is periodical channel state information reponse system structural representation of the present invention.
Embodiment
Basic thought of the present invention is: need the bit number of the periodical channel state information of feedback to be not more than predefined threshold value, adopt the mode of linear block codes to encode, otherwise, adopt the mode of tail-biting convolutional code to encode, finally the symbol after modulation is transmitted at antenna port.
Consider many transmit antennas, the mode of Reed-Muller coding and transmission diversity, the present invention has provided a kind of method of periodical channel state information feedback, and the method is applicable to the feedback of various load lower channel state informations, and can guaranteed performance optimum.Below in conjunction with accompanying drawing, the enforcement of technical scheme is described in further detail.
Fig. 2 is periodic channel state information feedback method schematic flow sheet of the present invention, and as shown in Figure 2, periodic channel state information feedback method of the present invention generally comprises following step:
Step 201: terminal is determined the bit number of the periodical channel state information that needs feedback.
The general channel condition information of feedback as required of terminal, determines the bit number that needs the periodical channel state information feeding back.Need the channel condition information of feedback to be expressed as [O
0 cSI, O
1 cSI... O
m-1 cSI] time, needing the bit number of the periodical channel state information of feedback is M.
Step 202: terminal is determined the target length after coding.
Here, terminal is first according to transmit antenna port number, and the form of PUCCH channelizing, determines the modulation symbol number that all antennas can carry, then determines coding target length afterwards in conjunction with the order of modulation of periodical channel state information.
Concrete, terminal is according to transmit antenna port number N, and the form of PUCCH channelizing, can determine that the modulation symbol number that all antennas can carry is N*R, wherein, the information number of carrying when R is PUCCH channelizing, thus can further determine that the target length after coding is N*R*Q
m, wherein, Q
mfor the order of modulation of periodical channel state information.
Step 203: described in terminal judges, need the bit number of the periodical channel state information of feedback whether to be not more than predefined threshold value, if so, execution step 204: otherwise, execution step 205.
The value of threshold alpha has represented that two kinds of coded systems obtain the how many separation of coding gain, in the time being less than or equal to α, adopt the coded system of linear block codes to be better than the mode of tail-biting convolutional code, in the time being greater than α, the coding gain that adopts the coded system of tail-biting convolutional code to obtain than the coded system of linear block codes is large, so, the bit number M of the periodical channel state information that needs are fed back is compared with predefined threshold alpha, in the time of M <=α, adopt the mode of linear block codes to encode; In the time of M > α, use the mode of tail-biting convolutional code to encode, wherein α is greater than zero positive integer, preferentially selects 11 or 12 or 13.
Step 204: terminal adopts the mode of linear block codes to encode to periodical channel state information, and according to the information after the target length intercepting encode after determined coding, forwards step 206 to.
Adopt the cataloged procedure of linear block codes as follows: the length of basic sequence is encoded and specifically comprised multiple feedback information:
wherein, M
i, nrepresent to be numbered in basic sequence n the value of i, according to target length N*R*Q
mobtain the information after coding.
Step 205: terminal adopts the mode of tail-biting convolutional code to encode to periodical channel state information, and according to the information after the target length intercepting encode after determined coding.
Adopt the cataloged procedure of tail-biting convolutional code as follows: adopting constraint length is 7, code check is that (constraint length is 7 for 1/3 tail-biting convolutional code, code check be 1/3 tail-biting convolutional code structure as shown in Figure 3), the initial value of the shift register of encoder should be set to last 6 of corresponding list entries, so that the initial value of shift register and last state consistency, the shift register of definition encoder is s
0, s
1, s
2..., s
5, the initial value of shift register is s
i=c
(K-1-i), the information after coding is d
k (0), d
k (1)and d
k (2), then the information after coding is carried out to rate-matched, according to target length N*R*Q
minformation after intercepting encode.
Step 206: the information of terminal after to the coding of described intercepting is modulated, and the symbol after modulation is transmitted on antenna port.
Generally, terminal is divided N part according to antenna port number by the symbol after modulation, uses different orthogonal resources to transmit at N antenna port.Orthogonal resource described here is orthogonal code resource, is exactly the cyclic shift (CS, Cyclic shift) of perseverance zero autocorrelation sequence (CG-CAZAC) of the computer generation of PUCCH channelizing use specifically.
Fig. 4 is periodical channel state information reponse system structural representation of the present invention, as shown in Figure 4, periodical channel state information reponse system of the present invention comprises: periodical channel state information provides unit 41, parameter that unit 42, judging unit 43, linear block codes coding unit 44, tail-biting convolutional code coding unit 45, modulation & transmission unit 46 are provided, wherein
Periodical channel state information provides unit 41, for the periodical channel state information that needs feedback is provided;
Parameter provides unit 42, for providing periodical channel state information to feed back relevant parameter; And the periodical channel state information of the needs feedback that unit 41 provides is provided according to periodical channel state information, determine the bit number of the periodical channel state information that needs feedback, and determine the target length after coding;
Judging unit 43, for providing unit 42 to provide and definite parameter according to parameter, whether the bit number that judges the periodical channel state information that needs feedback is not more than predefined threshold value, and in the time that the bit number of the periodical channel state information of needs feedbacks is not more than predefined threshold value, notice linear block codes coding unit 44; When the bit number of the periodical channel state information feeding back at needs is greater than predefined threshold value, notice tail-biting convolutional code coding unit 45;
Linear block codes coding unit 44, for receiving after the notice of judging unit 43, the periodical channel state information that adopts the mode of linear block codes to provide unit 41 to provide to periodical channel state information is encoded, provide the information after the determined coding in unit 42 target length intercepting encode afterwards according to parameter, and the information after the coding of described intercepting is sent to modulation & transmission unit 46;
Tail-biting convolutional code coding unit 45, for receiving after the notice of judging unit 43, the periodical channel state information that adopts the mode of tail-biting convolutional code to provide unit 41 to provide to periodical channel state information is encoded, provide the information after the determined coding in unit 42 target length intercepting encode afterwards according to parameter, and the information after the coding of described intercepting is sent to modulation & transmission unit 46;
Modulation & transmission unit 46, modulates for the information after the coding of the intercepting to from linear block codes coding unit 44 or tail-biting convolutional code coding unit 45, and the symbol after modulation is transmitted on antenna port.
Parameter provides unit 42 to determine that the bit number of the periodical channel state information that needs feedback is: the channel condition information that parameter provides unit to feed back as required, the bit number of definite periodical channel state information that needs feedback.
Parameter provides unit 42 to determine that the target length after coding is:
The product of the information number of carrying when parameter provides unit 42 to determine transmit antenna port number and PUCCH channelizing is the modulation symbol number that all antennas can carry;
It is coding target length afterwards that parameter provides the product of the order of modulation of the unit 42 modulation symbol number that definite described all antennas can carry and periodical channel state information.
Tail-biting convolutional code coding unit 45, also for receiving after the notice of judging unit, adopting constraint length is 7, the mode of the tail-biting convolutional code that code check is 1/3, the channel condition information that provides unit 41 to provide to periodical channel state information is encoded.
It is 11 or 12 or 13 that parameter provides the predefined threshold value that unit 42 provides.
Embodiment 1:
In the present embodiment, preset threshold alpha=11, linear block codes adopts Reed-Muller coding, corresponding basic sequence is as shown in table 3, is the basic sequence of (32,11), do not get rid of other forms of basic sequence yet, as adopting the basic sequence as shown in table 3 to carry out the form after line replacement, tail-biting convolutional code adopts encoder as shown in Figure 3
| i | M i，0 | M i，1 | M i，2 | M i，3 | M i，4 | M i，5 | M i，6 | M i，7 | M i，8 | M i，9 | M i，10 |
| 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 2 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 |
| 3 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 |
| 4 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 |
| 5 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 1 |
| 6 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 |
| 7 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 |
| 8 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 |
| 9 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 |
| 10 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 |
| 11 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 1 |
| 12 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 |
| 13 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 |
| 14 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 |
| 15 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| 16 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 |
| 17 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 |
| 18 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| 19 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
| 20 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 |
| 21 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| 22 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 |
| 23 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 1 |
| 24 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 |
| 25 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 |
| 26 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 |
| 27 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 |
| 28 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 |
| 29 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| 30 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 31 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Table 3
In addition, in the present embodiment, the channel condition information that UE need to feed back is [O
0 cSI, O
1 cSI... O
10 cSI], M=11 bit, the antenna port number of supposing UE is N=2, adopts PUCCH format 2/2a/2b to send [O
0 cSI, O
1 cSI... O
10 cSI], the symbol numbers that PUCCH 2/2a/2b carries is R=10, adopts QPSK modulation, therefore Q
m=2, so, the information number after coding is N*R*Q
m=40.Due to M < α, so adopt basic sequence linear block codes Reed-Muller coding as shown in table 3, specific coding process is as follows:
Wherein, M
i, nin basic sequence n shown in expression table 3, be numbered the value of i.
Sequence after coding is [b
0, b
1... b
39], carrying out QPSK modulation, the symbol after modulation is [b
0 sym, b
1 sym... b
19 sym], use the CG-CAZAC sequence that cyclic shift is CS1 on transmit antenna 1, to transmit [b
0 sym, b
1 sym... b
9 sym], use the CG-CAZAC sequence that cyclic shift is CS2 on transmit antenna 2, to transmit [b
10 sym, b
11 sym... b
19 sym].
In the present embodiment, preset threshold alpha=11, linear block codes adopts Reed-Muller coding, and corresponding basic sequence is also as shown in table 3, and tail-biting convolutional code adopts encoder as shown in Figure 3, supposes the channel condition information [O that UE need to feed back
0 cSI, O
1 cSI... O
11 cSI], M=12 bit, the antenna port number of supposing UE is N=2, adopts PUCCH format 2/2a/2b to send [O
0 cSI, O
1 cSI... O
11 cSI], the symbol numbers that PUCCH 2/2a/2b carries is R=10, adopts QPSK modulation, therefore Q
m=2, the information number after coding is N*R*Q so
m=40, because M > is α, so adopt the tail-biting convolutional code shown in Fig. 3, the information [b after the coding that intercepted length is 40
0, b
1... b
39], carrying out QPSK modulation, the symbol after modulation is [b
0 sym, b
1 sym... b
19 sym], use the CG-CAZAC sequence that cyclic shift is CS1 on transmit antenna 1, to transmit [b
0 sym, b
1 sym... b
9 sym], use the CG-CAZAC sequence that cyclic shift is CS2 on transmit antenna 2, to transmit [b
10 sym, b
11 sym... b
19 sym].
Embodiment 3
In the present embodiment, preset threshold alpha=13, linear block codes adopts Reed-Muller coding, corresponding basic sequence is also as shown in table 4, for the basic sequence of (32,13), do not get rid of other forms of basic sequence yet, as adopt the basic sequence as shown in table 4 to carry out the form after line replacement, tail-biting convolutional code adopts encoder as shown in Figure 3:
| i | M i，0 | M i，1 | M i，2 | M i，3 | M i，4 | M i，5 | M i，6 | M i，7 | M i，8 | M i，9 | M i，10 | M i，11 | M i，12 |
| 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 |
| 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 |
| 2 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
| 3 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 |
| 4 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 |
| 5 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 |
| 6 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
| 7 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 |
| 8 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 |
| 9 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 |
| 10 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 |
| 11 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 |
| 12 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| 13 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 |
| 14 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 |
| 15 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 |
| 16 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 |
| 17 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 |
| 18 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| 19 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 |
| 20 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 1 |
| 21 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 |
| 22 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 1 |
| 23 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 |
| 24 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 |
| 25 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 |
| 26 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 |
| 27 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 0 |
| 28 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
| 29 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 |
| 30 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 |
| 31 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Table 4
In addition, in the present embodiment, suppose the channel condition information [O that UE need to feed back
0 cSI, O
1 cSI... O
11 cSI], M=12 bit, the antenna port number of supposing UE is N=2, adopts PUCCH format 2/2a/2b to send [O
0 cSI, O
1 cSI... O
10 cSI], the symbol numbers that PUCCH 2/2a/2b carries is R=10, adopts QPSK modulation, therefore Q
m=2, the information number after coding is N*R*Q so
m=40.Because M < is α, adopt basic sequence
Linear block codes Reed-Muller coding as shown in table 4, specific coding is as follows:
Wherein, M
i, nrepresent to be numbered in basic sequence n the value of i.
Sequence after coding is [b
0, b
1... b
39], carrying out QPSK modulation, the symbol after modulation is [b
0 sym, b
1 sym... b
19 sym], use the CG-CAZAC sequence that cyclic shift is CS1 on transmit antenna 1, to transmit [b
0 sym, b
1 sym... b
9 sym], use the CG-CAZAC sequence that cyclic shift is CS2 on transmit antenna 2, to transmit [b
10 sym, b
11 sym... b
19 sym].
Embodiment 4
In the present embodiment, preset threshold alpha=13, linear block codes adopts Reed-Muller coding, and corresponding basic sequence is as shown in table 4, and tail-biting convolutional code adopts encoder as shown in Figure 3, in addition, supposes the channel condition information [O that UE need to feed back
0 cSI, O
1 cSI... O
20 cSI], M=21 bit, the antenna port number of supposing UE is N=2, adopts PUCCH format 2/2a/2b to send [O
0 cSI, O
1 cSI... O
20 cSI], the symbol numbers that PUCCH2/2a/2b carries is R=10, adopts QPSK modulation, therefore Q
m=2, the information number after coding is N*R*Q so
m=40, because M > is α, so adopt the tail-biting convolutional code shown in Fig. 3, the information [b after the coding that intercepted length is 40
0, b
1... b
39], carrying out QPSK modulation, the symbol after modulation is [b
0 sym, b
1 sym... b
19 sym], use the CG-CAZAC sequence that cyclic shift is CS1 on transmit antenna 1, to transmit [b
0 sym, b
1 sym... b
9 sym], use the CG-CAZAC sequence that cyclic shift is CS2 on transmit antenna 2, to transmit [b
10 sym, b
11 sym... b
19 sym].
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (8)
1. a periodic channel state information feedback method, is characterized in that, the method comprises:
Terminal is determined the bit number of the periodical channel state information that needs feedback, and coding target length afterwards;
Target length after described definite coding is: the product of the information number of carrying while determining transmit antenna port number and PUCCH channelizing is the modulation symbol number that all antennas can carry; The product of determining the order of modulation of modulation symbol number that described all antennas can carry and periodical channel state information is the target length after coding;
Described in terminal judges, need the bit number of the periodical channel state information of feedback to be not more than predefined threshold value, adopt the mode of linear block codes to encode to periodical channel state information, and according to the information after the target length intercepting encode after determined coding; Described in terminal judges, need the bit number of the periodical channel state information of feedback to be greater than predefined threshold value, adopt the mode of tail-biting convolutional code to encode to periodical channel state information, and according to the information after the target length intercepting encode after determined coding;
The information of terminal after to the coding of described intercepting is modulated, and the symbol after modulation is transmitted on antenna port.
2. periodic channel state information feedback method according to claim 1, it is characterized in that, the bit number of described definite periodical channel state information that needs feedback is: the channel condition information of feedback as required, the bit number of definite periodical channel state information that needs feedback.
3. periodic channel state information feedback method according to claim 1 and 2, is characterized in that, the tail-biting convolutional code of described employing is: constraint length is 7, the tail-biting convolutional code that code check is 1/3.
4. periodic channel state information feedback method according to claim 1 and 2, is characterized in that, described predefined threshold value is 11 or 12 or 13.
5. a periodical channel state information reponse system, it is characterized in that, this system comprises: periodical channel state information provides unit, parameter that unit, judging unit, linear block codes coding unit, tail-biting convolutional code coding unit, modulation & transmission unit are provided, wherein
Described periodical channel state information provides unit, for the periodical channel state information that needs feedback is provided;
Described parameter provides unit, for providing periodical channel state information to feed back relevant parameter; And the periodical channel state information of the needs feedback that unit provides is provided according to periodical channel state information, determine the bit number of the periodical channel state information that needs feedback, and determine the target length after coding; Described parameter provides unit to determine that the target length after coding is: the product of the information number of carrying when parameter provides unit to determine transmit antenna port number and PUCCH channelizing is the modulation symbol number that all antennas can carry; It is the target length after coding that parameter provides the product of the order of modulation of modulation symbol number that unit determines that described all antennas can carry and periodical channel state information;
Described judging unit, for providing unit to provide and definite parameter according to parameter, whether the bit number that judges the periodical channel state information that needs feedback is not more than predefined threshold value, and in the time that the bit number of the periodical channel state information of needs feedbacks is not more than predefined threshold value, notice linear block codes coding unit; When the bit number of the periodical channel state information feeding back at needs is greater than predefined threshold value, notice tail-biting convolutional code coding unit;
Described linear block codes coding unit, for receiving after the notice of judging unit, adopt the mode of linear block codes to provide the periodical channel state information that unit provides to encode to periodical channel state information, provide the information after the determined coding in unit target length intercepting encode afterwards according to parameter, and the information after the coding of described intercepting is sent to modulation & transmission unit;
Described tail-biting convolutional code coding unit, for receiving after the notice of judging unit, adopt the mode of tail-biting convolutional code to provide the periodical channel state information that unit provides to encode to periodical channel state information, provide the information after the determined coding in unit target length intercepting encode afterwards according to parameter, and the information after the coding of described intercepting is sent to modulation & transmission unit;
Described modulation & transmission unit, modulates for the information after the coding of the intercepting to from linear block codes coding unit or tail-biting convolutional code coding unit, and the symbol after modulation is transmitted on antenna port.
6. periodical channel state information reponse system according to claim 5, it is characterized in that, the bit number that described parameter provides unit to determine the periodical channel state information that needs feedback is: the channel condition information that parameter provides unit to feed back as required, the bit number of definite periodical channel state information that needs feedback.
7. according to the periodical channel state information reponse system described in claim 5 or 6, it is characterized in that, described tail-biting convolutional code coding unit, also for receiving after the notice of judging unit, adopting constraint length is 7, code check is the mode of 1/3 tail-biting convolutional code, provides the channel condition information that unit provides to encode to periodical channel state information.
8. according to the periodical channel state information reponse system described in claim 5 or 6, it is characterized in that, it is 11 or 12 or 13 that described parameter provides the predefined threshold value that unit provides.
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| CN102244552A (en) * | 2010-05-13 | 2011-11-16 | 中兴通讯股份有限公司 | Method and device for transmitting and receiving data |
| CN101902307B (en) * | 2010-06-22 | 2014-06-11 | 中兴通讯股份有限公司 | Feedback method of channel state information and terminal |
| US10333650B2 (en) * | 2010-08-16 | 2019-06-25 | Qualcomm Incorporated | Aperiodic channel quality indicator report in carrier aggregation |
| CN102448114B (en) * | 2010-10-07 | 2015-07-15 | 上海贝尔股份有限公司 | Method and equipment for improving transmission accuracy of CSI (Channel State Information) through PUCCH (Physical Uplink Control Channel) |
| CN103348612B (en) * | 2011-02-23 | 2017-02-22 | 中兴通讯股份有限公司 | Method and device for transmitting multiple channel state information reports on PUSCH |
| EP2760171B1 (en) | 2011-09-23 | 2018-03-28 | LG Electronics Inc. | Method and apparatus for transmitting uplink control information in wireless communication system |
| US9204317B2 (en) * | 2012-05-11 | 2015-12-01 | Telefonaktiebolaget L M Ericsson (Publ) | Methods and arrangements for CSI reporting |
| CN108683487B (en) | 2018-01-12 | 2019-06-11 | 华为技术有限公司 | A kind of method, apparatus and system for terminal unit ability transmission |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050042717A (en) * | 2003-11-04 | 2005-05-10 | 삼성전자주식회사 | Method and apparatus of combined power control and error-correcting coding |
| CN101340442A (en) * | 2008-08-07 | 2009-01-07 | 中兴通讯股份有限公司 | Information multiplexing method |
| KR20090080881A (en) * | 2008-01-22 | 2009-07-27 | 한국전자통신연구원 | Method for channel state feedback by quantization of time-domain coefficients |
| CN101567762A (en) * | 2008-04-22 | 2009-10-28 | 上海华为技术有限公司 | Feedback method and device of channel information |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110141878A1 (en) * | 2008-03-25 | 2011-06-16 | Nokia Corporation | Ack/nack transmission on pucch in lte-atdd with nxpdcch structure |
| CN101695017A (en) * | 2009-10-27 | 2010-04-14 | 中兴通讯股份有限公司 | Method and device for transmitting an uplink control signaling on a physical uplink shared channel |
| CN101702632B (en) * | 2009-10-29 | 2014-07-02 | 中兴通讯股份有限公司 | Periodic channel state information feedback method and system |
| CN101699781B (en) * | 2009-11-05 | 2015-09-16 | 中兴通讯股份有限公司 | The coding method of correct/error response message and rank indication signaling and device |
-
2009
- 2009-10-29 CN CN200910235908.XA patent/CN101702632B/en active Active
-
2010
- 2010-06-28 WO PCT/CN2010/074600 patent/WO2010145592A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050042717A (en) * | 2003-11-04 | 2005-05-10 | 삼성전자주식회사 | Method and apparatus of combined power control and error-correcting coding |
| KR20090080881A (en) * | 2008-01-22 | 2009-07-27 | 한국전자통신연구원 | Method for channel state feedback by quantization of time-domain coefficients |
| CN101567762A (en) * | 2008-04-22 | 2009-10-28 | 上海华为技术有限公司 | Feedback method and device of channel information |
| CN101340442A (en) * | 2008-08-07 | 2009-01-07 | 中兴通讯股份有限公司 | Information multiplexing method |
Non-Patent Citations (2)
| Title |
|---|
| Separate Rank and CQI Feedback in PUCCH;Texas Instruments;《3GPP TSG RAN WG1 #51 R1-074685》;20071109;全文 * |
| Texas Instruments.Separate Rank and CQI Feedback in PUCCH.《3GPP TSG RAN WG1 #51 R1-074685》.2007, |
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