CN102377540A - Method for transmitting channel state information and feedback information of hybrid automatic repeat request - Google Patents
Method for transmitting channel state information and feedback information of hybrid automatic repeat request Download PDFInfo
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Abstract
The invention provides a method for transmitting channel state information (CSI) and feedback (ACK (Acknowledgement)/NAC (Negative Acknowledgement)) information of a hybrid automatic repeat request. The method comprises the following steps of: determining a transmission reliability requirement type of the CSI fed back by a current sub-frame; if the difference between the CSI and the transmission reliability requirement of ACK/NAC information is positioned within a set range, carrying out joint coding on the CSI and the ACK/NAC information; mapping information obtained by joint coding on a discrete Fourier transform-spreading-orthogonal frequency division multiplexing (DFT-S-OFDM) channel for transmitting; and otherwise, processing the CSI and the ACK/NAC information by adopting a mode except a joint coding mode and mapping the processed control information to the DFT-S-OFDM channel for transmitting. According to the method disclosed by the invention, the transmission power of UE (User Equipment) can be reduced and the interference between the UE is reduced.
Description
Technical field
The present invention relates to wireless communication technology field, the method for the automatic repeat requests feedback of particularly a kind of transmitting channel state information (CSI) and mixing (ACK/NACK) information.
Background technology
In Long Term Evolution (LTE) system; To downlink data transmission; Subscriber equipment (UE) is measured also report downlink channel condition information (CSI), and this comprises the information (RI) of the order of channel, the indication information (PMI) and the channel quality indication (CQI) information (CQI) of the pre-coding matrix that is fit to, and the base station is after receiving these channel condition informations; Can be UE allocation of downlink resource and respective coding modulation system, thereby carry out downlink data transmission based on mixing automatic repeat requests (HARQ).To the downlink data transmission based on HARQ, when UE correctly received the data of base station, UE sent and confirms (ACK) feedback information; Otherwise, send and deny (NACK) feedback information, in subsequent descriptions of the present invention, the HARQ indication information that feeds back is expressed as ACK/NACK.
In the LTE system, when the timing position of the timing position of CSI and ACK/NACK was identical, when promptly these two kinds of informational needs sent in same subframe, in order to guarantee single-carrier nature, it was infeasible on two channels, sending these two kinds of information respectively simultaneously.LTE system definition two kinds of processing methods.A kind of method is to lose CSI and only send ACK/NACK information.Another kind method is to send this two kinds of information simultaneously, to general CP frame structure, comes transferring ACK/NACK through the reference signal of modulation CSI channel; To expansion CP frame structure, ACK/NACK and CSI are carried out combined coding and transmit through the CSI channel.
In strengthening Long Term Evolution (LTE-A) system; In order to support higher transmission rate, be to obtain bigger bandwidth of operation through making up a plurality of unit carrier wave (CC), constitute communication system down link and up link; Be carrier combination (CA, Carrier Aggregation).For example, in order to support the bandwidth of 100MHz, can obtain through the CC that makes up 5 20MHz.Based on CA, downlink data is sent to same UE in the base station on a plurality of CC, and correspondingly, UE need support to feed back the ACK/NACK information of the downlink data that on a plurality of CC, sends.According to the discussion result of present LTE-A, the ACK/NACK information of the transfer of data on each CC is sent on a up CC.Specifically, in order to support to feed back the ACK/NACK information of the downlink transfer on maximum 5 CC, needing the maximum of the bit number of feedback is 10～12 bits.
According to the discussion result among the present LTE-A,, accepted ascending control channel form based on the OFDM (DFT-S-OFDM) of DFT expansion in order to support the ACK/NACK message transmission of many bits.As shown in Figure 1; At first ACK/NACK information is carried out chnnel coding and rate-matched obtains 48 coded-bits; Carry out the specific scrambling in sub-district then; Carry out QPSK (QPSK) modulation again and obtain 24 QPSK symbols, these 24 QPSK symbols are divided into two groups of interior transmission of two time slots that also are mapped to sub-frame of uplink respectively.Here; To each time slot, the number that note is used to carry OFDM (OFDM) symbol of ACK/NACK information is SF, and correspondingly the length of quadrature temporal extension sign indicating number (OCC) is SF; Then 12 QPSK symbol repeating mapping are to SF OFDM symbol, and use unit's weighting usually of OCC respectively.Next; Weighted Q PSK symbol on each OFDM symbol is carried out DFT (DFT) precoding (being Pre-DFT); Be mapped on the Physical Resource Block (PRB) of DFT-S-OFDM channel, and carry out invert fast fourier transformation (IFFT) and change to time domain and obtain the upward signal that will send.Here; Because the DFT-S-OFDM channel format provides 48 physics bits; And the physical number of bits of the CSI channel among the LTE is merely 20, so the carry-on bit number of DFT-S-OFDM channel is much bigger, for example; Even on the DFT-S-OFDM channel, send 24 information bit, its code rate also has only 0.5.
According to top discussion; To situation about in ascending physical signal control channel (PUCCH), sending control information, the bit number maximum of ACK/NACK is 10～12 bits, according to the LTE standard; The maximum number bits of CSI channel is 11; Because the physical number of bits order of DFT-S-OFDM channel is 48, much larger than the maximum number bits sum of CSI and ACK/NACK, so might on the DFT-S-OFDM channel, transmit these two kinds of ascending control informations simultaneously.The mode of a kind of while transferring ACK/nack message and CQI is that ACK/NACK information and CQI are carried out combined coding, obtains 48 coded-bits, thereby in the DFT-S-OFDM channel.Yet; Because bit error rate (BER) demand (being generally about 0.1) of general CQI/PMI is much larger than the BER demand (being generally 0.01～0.001) of ACK/NACK information; Combined coding can cause CQI to surpass the power emission of actual needs; This will increase the UE transmitting power, reduces battery service time and increases the interference between the UE.
Summary of the invention
The invention provides the method for a kind of CSI of transmission and ACK/NACK information,, reduce the interference between the UE so that reduce the transmitting power of UE.
Technical scheme of the present invention is achieved in that
A kind of transmitting channel state information and the method for mixing automatic repeat requests feedback information, this method comprises:
The transmission reliability of confirming the channel condition information CSI that current subframe will be fed back requires type;
If the difference that said CSI and the transmission reliability that mixes automatic repeat requests feeding back ACK/nack message require is in setting range; Then said CSI and said ACK/NACK information are carried out combined coding, with the OFDM DFT-S-OFDM channel of the information mapping behind the combined coding to the DFT expansion;
If the difference of said CSI and ACK/NACK transmission of Information reliability requirement exceeds setting range, then adopt the mode beyond the combined coding to handle said CSI and ACK/NACK information, the control information after handling is mapped to the DFT-S-OFDM channel.
Can find out by above technical scheme; Adopt method of the present invention; Require CSI is carried out type classification according to transmission reliability; With reliability requirement and the approaching CSI of ACK/NACK information, adopt the mode of carrying out combined coding with ACK/NACK information, be mapped to the DFT-S-OFDM channel then; With reliability requirement and the bigger CSI of ACK/NACK information difference, adopt out mode outside the combined coding to handle with ACK/NACK information after, the control information after handling is mapped to the DFT-S-OFDM channel.Promptly guaranteed the timely transmission of the CSI information that reliability requirement is high, when transmission reliability requires low CSI information and ACK/NACK, can keep very low signal peak-to-average ratio simultaneously, thereby saved the battery electric quantity of UE and reduce the interference between the UE.
Description of drawings
Fig. 1 is that the form of DFT-S-OFDM channel produces sketch map;
Fig. 2 is a main method flow chart provided by the invention;
Fig. 3 is a kind of sketch map that transmits CSI and ACK/NACK information simultaneously provided by the invention;
Fig. 4 is an another kind of method flow diagram provided by the invention;
Fig. 5 is a performance comparative example figure provided by the invention;
Fig. 6 is another performance comparative example figure provided by the invention.
Embodiment
In order to make the object of the invention, technical scheme and advantage clearer, describe the present invention below in conjunction with accompanying drawing and specific embodiment.
Main method provided by the invention can be as shown in Figure 2, mainly may further comprise the steps:
Step 201: the transmission reliability of confirming the CSI that current subframe will be fed back requires type, if the difference of CSI and ACK/NACK transmission of Information reliability requirement in setting range, then execution in step 202; If the difference of CSI and ACK/NACK transmission of Information reliability requirement exceeds setting range, then execution in step 203.
CSI comprises RJ, PMI and CQI.In general, RI changes slow and transmission reliability is had relatively high expectations, and reliability requirement is 0.01～0.001 usually; And the variation of PMI/CQI is very fast relatively, and its transmission reliability requires lower, and reliability requirement is about 0.1 usually.
ACK/NACK transmission of Information reliability requirement is 0.01～0.001.It is thus clear that reliability requirement and the ACK/NACK of RI are more approaching, and the reliability requirement of CQI/PMI is just much lower.
In this step; At first require CSI is classified according to transmission reliability; Can the CSI close with the ACK/NACK reliability requirement be divided into one type, be about to the CSI (for example RI) of difference in setting range that the transmission reliability with ACK/NACK requires and be divided into one type, corresponding execution in step 202.And the reliability requirement CSI more much lower than ACK/NACK is divided into one type, and the CSI (for example CQI and PMI) that the difference of the transmission reliability of ACK/NACK requirement soon exceeds setting range is divided into one type, corresponding execution in step 203.
Step 202: CSI that will feed back and ACK/NACK information are carried out combined coding, and the information mapping behind the combined coding is arrived DFT-S-OFDM channel, process ends.
In fact, this step is the CSI high to reliability requirement, for example RI and ACK/NACK information combined coding, and information bit is many, thus coding gain is bigger, helps to improve the link performance of up feedback.
Suppose that the DFT-S-OFDM channel has two OFDM symbols that send reference signal in each time slot; Before carrying out this step; Whether the CSI that can also first judgement will feed back is 1 bit or 2 bits; If can on the information OFDM of DFT-S-OFDM channel symbol, send ACK/NACK information, and adopt the mode of the reference signal OFDM symbol of modulation DFT-S-OFDM channel to send the CSI that will feed back; Otherwise execution in step 202.
Perhaps; Before carrying out this step; Whether the ACK/NACK information that judgement will be fed back is 1 bit or 2 bits, if can on the information OFDM of DFT-S-OFDM channel symbol, send the CSI that will feed back; Be the demanding CSI of reliability (for example RI), and the mode of the reference signal OFDM symbol through modulation DFT-S-OFDM channel is sent ACK/NACK information.
Perhaps; Before carrying out this step; If when judging the CSI that will feed back and ACK/NACK information and all being 1 bit or 2 bits; Can a kind of information in CSI or the ACK/NACK information be sent on the information OFDM of DFT-S-OFDM channel symbol, another kind of information is sent through the mode of the reference signal OFDM symbol of modulation DFT-S-OFDM channel.
Step 203: CSI that will feed back and ACK/NACK information, adopt the mode beyond the combined coding to handle, the information mapping after handling is arrived the DFT-S-OFDM channel.
When needs send low CSI of reliability requirement and ACK/NACK information simultaneously, because the reliability requirement of two kinds of information differs bigger, be not suitable for doing combined coding, otherwise will waste the transmitting power of UE.
In this step, the processing of employing can be following several kinds:
First kind of mode: abandon the CSI that will feed back, promptly abandon the low CSI of reliability requirement, and only send ACK/NACK information.
The second way: when ACK/NACK is 1 bit or 2 bits; And when the DFT-S-OFDM channel has two to send the OFDM symbol of reference signal in each time slot; Can on the information OFDM of DFT-S-OFDM channel symbol, send the CSI that will feed back, and adopt the mode of the reference signal OFDM symbol of modulation DFT-S-OFDM channel in the LTE system to come feeding back ACK/nack message.
The third mode: CSI that will feed back and ACK/NACK information are mapped to respectively on two quadrature branch (1 branch road of modulation symbol and Q branch road) of time domain modulation symbol, and send through the DFT-S-OFDM channel.
Be described in detail in the face of this third mode down, the execution sketch map of the third mode can be as shown in Figure 3, may further comprise the steps:
Step 301: respectively to the CSI that will feed back and ACK/NACK information is encoded and respectively rate-matched obtain L
RMBit, L in the LTE-A system
RM=24.
For the encoding function that has defined among the multiplexing LTE, can carry out block encoding (Block code) to CSI and obtain L coded-bit, usually block encoding can be called also that (wherein A represents the bit number of CSI for L, A) coding, and L=20 carries out rate-matched then and obtains L
RMIndividual bit carries out same treatment to ACK/NACK information.Coded-bit after the note block encoding is respectively S
i, i=0 wherein, 1 ... L-1, then carry out rate-matched after, for example obtain L through cycle repeats
RMIndividual bit r
j=s
(j%L), j=0,1 ..., L
RM-1.
Step 302: the specific scrambling in sub-district is carried out in the two-way control information to respectively CSI and ACK/NACK information being obtained after step 301.
When carrying out scrambling, the scrambler of CSI and ACK/NACK information can be identical, and the initialization value of scrambler can be used cell ID
Timeslot number n
sDeng obtaining, for example, adopt the scrambler formula
Obtain the initialization value c of scrambler
InitThe present invention does not limit the concrete form of initialization value.
In addition, the scrambler of CSI and ACK/NACK information also can be different, promptly produces the scrambler of CSI and ACK/NACK information respectively respectively with different initialization values.The initialization value of scrambler can be used cell ID
Timeslot number n
s, and the information n that is used to distinguish CSI and ACK/NACK of 1 bit
UciObtain, for example, adopt the scrambler formula
Obtain the initialization value c of scrambler
Init
Except above-mentioned initialization value to CSI and ACK/NACK information generating scrambler respectively, also can only produce the initialization value of a scrambler, generation length is 2L
RMLong scrambler, and to be divided into two length be L
RMScrambler be respectively applied for the scrambling of CSI and ACK/NACK.It is 2L that the present invention does not limit to length
RMLong scrambler to be divided into two length be L
RMThe method of scrambler.At this moment, the initialization value of scrambler can be used cell ID
Timeslot number n
sDeng obtaining, for example, adopt the scrambler formula
The present invention does not limit the concrete form of initialization value.
Step 303: the two-way control information that respectively step 302 is obtained is carried out two phase phase shift keyings (BPSK) and is modulated and be mapped on two quadrature branch of time domain modulation symbol.
This step can adopt following dual mode to realize:
First kind of mode: can adopt identical BPSK constellation point mapping graph to the two-way control information that step 302 obtains; Wherein one tunnel control information carries out being mapped to after BPSK modulation and the weighting quadrature branch of time domain modulation symbol according to this BPSK constellation point mapping graph, another road control information according to this BPSK constellation point mapping graph carry out BPSK modulate, revolve turn 90 degrees with weighting after be mapped to another quadrature branch of time domain modulation symbol; Then the control signal addition on two quadrature branch is obtained the time domain modulation symbol that finally will send.
The second way: can adopt different BPSK constellation point mapping graphs respectively to the two-way control information that step 302 obtains, and be the relation of 90 degree quadratures between these two each constellation point mapping graphs.Thereby two path control signal is carried out being mapped to respectively on the different orthogonal branch road of time domain modulation symbol after BPSK modulation and the weighting according to separately constellation point mapping graph.At last, the control signal addition on two quadrature branch is obtained the time domain modulation symbol that finally will send.
Step 304: above-mentioned time domain modulation symbol is divided into two groups, is mapped to respectively on the time slot of sub-frame of uplink through the DFT-S-OFDM Channel Transmission.
In step 303, the number of the time domain modulation symbol of mapping is L
RMIndividual, they are divided into two groups, and with every group L
RM/ 2 time domain modulation symbols carry out Pre-DFT and are mapped to respectively on the time slot of sub-frame of uplink and transmit based on the DFT-S-OFDM channel format.
In above-mentioned steps 303, the purpose of the two-way control information being carried out weighting is a control two-way information emission power, thus the link performance of control information.Actual bit number and the base station of reliability requirement, control information that the concrete weight coefficient that adopts depends on every kind of control information is to the method for reseptance of two-way control information etc.In general, the reliability requirement of ACK/NACK information is high, and its shared branch road need send with higher power.The transmitted power of two-way control information here can be controlled respectively, and when merging two path control signal, does not increase the peak-to-average ratio (PAPR) of signal, thereby can effectively utilize the power amplifier of UE, reduces battery loss and increases cell coverage area.
As stated; The base station can influence the weight coefficient of UE to the two-way control information to the method for reseptance of CSI and ACK/NACK information; So its method of reseptance that adopts of high-level signaling notice UE can be sent in the base station, UE can be provided with and the corresponding weight coefficient of this method of reseptance the two-way control information according to the method for reseptance that adopt the base station.Perhaps, the base station also can with self the corresponding weight coefficient of the method for reseptance that adopts directly send to UE through high-level signaling, UE adopts the weight coefficient receive.Perhaps, the base station is sent a parameter through high-level signaling to UE, is designated as r, and r is relevant with the weight coefficient ratio of base station method of reseptance and CSI and ACK/NACK information; UE utilizes the bit number of parameter r and CSI and ACK/NACK information, confirms the weight coefficient ratio of CSI and ACK/NACK information, i.e. w=f (r, N
ACK, N
CSI), the ratio that the weight coefficient of CSI and ACK/NACK information for example is set does
C is a constant, N
ACKBe the bit number of ACK/NACK, N
CSIIt is the bit number of CSI.
The high-level signaling of above-mentioned transmission can be a broadcast signaling, also can send the RRC signaling to different UE.
The method of reseptance of base station can have a variety of; For example; A kind of method of reseptance is based on the method for interference delete, because the reliability requirement of ACK/NACK information is than higher, the possibility that the base station correctly receives ACK/NACK information is big; So at first ACK/NACK information is received, only handles the signal of CSI as a kind of interference; Then, after the interference of base station deletion ACK/NACK information from receive signal, CSI is decoded, thereby improve the normal reliability that receives of CSI.The another kind of method of reseptance of base station is not adopt interference delete, but directly carries out equilibrium to the received signal, and adopts the demodulation method of QPSK to isolate the two-way control information, and decoding obtains CSI and ACK/NACK information respectively then.In a word, the weight coefficient that the different base stations method of reseptance needs usually is different, and UE need be known the corresponding weight coefficient of method of reseptance that adopts the base station through high-level signaling, thereby makes UE can do suitable weighting.
In LTE-A, if semi-static distribution PUCCH form 2 channels are used to send CSI, then when needs sent CSI and ACK/NACK simultaneously, UE was distributing to these two kinds of control informations of transmission on the DFT-S-OFDM channel of ACK/NACK.All on the DFT-S-OFDM channel, send if the CSI in LTE-A is the same with ACK/NACK information; Then when needs send CSI and ACK/NACK simultaneously; UE is used at semi-static branch on the DFT-S-OFDM channel of CSI transmission and sends these two kinds of control informations; And need not take DFT-S-OFDM channel into the ACK/NACK dynamic assignment, in fact this channel can dynamic assignment be used to send information such as ACK/NACK for other UE.
So far, flow process shown in Figure 3 finishes.Need to prove; The CSI that method shown in Figure 3 can be used for feeding back and the difference of ACK/NACK transmission of Information reliability requirement exceed the situation of setting range, the CSI that also can be used for feeding back and the situation of difference in setting range of ACK/NACK transmission of Information reliability requirement.That is to say, can specifically not distinguish the type of CSI, adopt flow process shown in Figure 3 to send with ACK/NACK to any CSI.That is to say that can also there be another kind of method in the present invention to the transmission of CSI and ACK/NACK information, this method can be as shown in Figure 4, comprising:
Step 401: respectively CSI and ACK/NACK information are encoded and rate-matched.
Step 402: the specific scrambling in sub-district is carried out in the two-way control information that obtains after the rate-matched.
Step 403: respectively BPSK is carried out in the two-way control information that obtains after the specific scrambling in sub-district and modulate and be mapped on two quadrature branch of time domain modulation symbol.
Step 404: through DFT-S-OFDM Channel Transmission time domain modulation symbol.
The concrete implementation procedure of Fig. 4 correspondence is referring to the associated description among Fig. 3.
Fig. 5 and Fig. 6 are the performance evaluations when sending CQI/PMI and ACK/NACK simultaneously according to the method for Fig. 3 of the present invention.Suppose that the method for reseptance that adopt the base station is not adopt interference delete.As shown in Figure 5; When the ACK/NACK of CQI/PMI that sends 11 bits simultaneously and 11 bits; When supposing need to satisfy the ACK/NACK error probability of 0.1 CQI/PMI error probability and 0.01; The signal to noise ratio (snr) that needs according to the method for Fig. 3 of the present invention approximately is-2.8dB, and the SNR that needs when adopting combined coding is-1.4dB, so the gain that can obtain 1.4dB of the present invention.As shown in Figure 6; When the ACK/NACK of CQI/PMI that sends 11 bits simultaneously and 5 bits; When supposing need to satisfy the ACK/NACK error probability of 0.1 CQI/PMI error probability and 0.01; The signal to noise ratio (snr) that needs according to the method for Fig. 3 of the present invention approximately is-5.4dB, and the SNR that needs when adopting combined coding is-3.4dB, so the gain that can obtain 2.0dB of the present invention.Can find out, when adopting method provided by the invention to send CQI/PMI and ACK/NACK information simultaneously, greatly reduce the energy content of battery loss of UE and the interference between the UE.Can predict, if method of reseptances such as interference delete are adopted in the base station, performance gain of the present invention can further increase.
The above is merely preferred embodiment of the present invention, and is in order to restriction the present invention, not all within spirit of the present invention and principle, any modification of being made, is equal to replacement, improvement etc., all should be included within the scope that the present invention protects.
Claims (14)
1. transmitting channel state information and the method for mixing automatic repeat requests feedback information is characterized in that this method comprises:
The transmission reliability of confirming the channel condition information CSI that current subframe will be fed back requires type;
If the difference that said CSI and the transmission reliability that mixes automatic repeat requests feeding back ACK/nack message require is in setting range; Then said CSI and said ACK/NACK information are carried out combined coding, with the OFDM DFT-S-OFDM channel of the information mapping behind the combined coding to the DFT expansion;
If the difference of said CSI and ACK/NACK transmission of Information reliability requirement exceeds setting range, then adopt the mode beyond the combined coding to handle said CSI and ACK/NACK information, the control information after handling is mapped to the DFT-S-OFDM channel.
2. method according to claim 1 is characterized in that, with the CSI of difference in setting range of ACK/NACK transmission of Information reliability requirement be the information RI of the order of channel;
The CSI that exceeds setting range with the difference of ACK/NACK transmission of Information reliability requirement is the indication information PMI or the channel quality indication (CQI) information CQI of pre-coding matrix.
3. method according to claim 1 and 2; It is characterized in that; Said CSI and said ACK/NACK information are carried out combined coding specifically to be comprised: judge whether said CSI is 1 bit or 2 bits, if not, said CSI and said ACK/NACK information are carried out combined coding; If, on the information OFDM of DFT-S-OFDM channel symbol, send ACK/NACK information, and the mode of the reference signal OFDM symbol through modulation DFT-S-OFDM channel sends said CSI.
4. method according to claim 1 and 2; It is characterized in that; Said CSI and said ACK/NACK information are carried out combined coding specifically to be comprised: judge whether ACK/NACK information is 1 bit or 2 bits, if not, said CSI and said ACK/NACK information are carried out combined coding; If on the information OFDM of DFT-S-OFDM channel symbol, send CSI, and the mode of the reference signal OFDM symbol through modulation DFT-S-OFDM channel is sent said ACK/NACK information.
5. method according to claim 1 is characterized in that, adopts the mode beyond the combined coding to handle said CSI and ACK/NACK information, and the information mapping after handling is specifically comprised to the DFT-S-OFDM channel:
Abandon said CSI, the ACK/NACK information mapping that will send is to the DFT-S-OFDM channel; Perhaps,
If said ACK/NACK information is 1 bit or 2 bits; Then on the information OFDM of DFT-S-OFDM channel symbol, send said CSI information, and the mode of the reference signal OFDM symbol through modulation DFT-S-OFDM channel is sent said ACK/NACK information.
6. method according to claim 1 is characterized in that, adopts the mode beyond the combined coding to handle said CSI and ACK/NACK information, and the information mapping after handling is specifically comprised to the DFT-S-OFDM channel:
Be mapped on two quadrature branch of time domain modulation symbol after said CSI and ACK/NACK information handled respectively, and send through the DFT-S-OFDM channel.
7. method according to claim 6 is characterized in that, is mapped to after said CSI and ACK/NACK information are handled respectively on two quadrature branch of time domain modulation symbol specifically to comprise:
Respectively said CSI and ACK/NACK information are encoded and rate-matched;
The specific scrambling in sub-district is carried out in the two-way control information that obtains after the rate-matched;
Respectively two phase phase shift keying BPSK being carried out in the two-way control information that obtains after the specific scrambling in sub-district modulates and is mapped on two quadrature branch of time domain modulation symbol.
8. method according to claim 7 is characterized in that, when carrying out the specific scrambling in sub-district, identical scrambler is adopted in the two-way control information, and the scrambler initialization value is by cell ID
With timeslot number n
sObtain; Perhaps,
Different scramblers is adopted in the two-way control information, and the scrambler initialization value is by cell ID
Timeslot number n
sAnd the information n that is used to distinguish CSI and ACK/NACK information of 1 bit
UciObtain.
9. method according to claim 7 is characterized in that, when carrying out the specific scrambling in sub-district, generates a long scrambler sequence, this length scrambler sequence is divided into two scramblers respectively scrambling is carried out in the two-way control information that obtains after the rate-matched.
10. method according to claim 7 is characterized in that, respectively BPSK modulation is carried out in the two-way control information that obtains after the specific scrambling in sub-district and be mapped on two quadrature branch of time domain modulation symbol specifically comprising:
Identical BPSK constellation point mapping graph is adopted in two-way control information to obtaining after the specific scrambling in sub-district; One tunnel control information is wherein carried out being mapped to after BPSK modulation and the weighting quadrature branch of time domain modulation symbol according to said BPSK constellation point mapping graph, another road control information according to said BPSK constellation point mapping graph carry out BPSK modulate, revolve turn 90 degrees with weighting after be mapped to another quadrature branch of time domain modulation symbol; Perhaps,
Two different BPSK constellation point mapping graphs are adopted in two-way control information to obtaining after the specific scrambling in sub-district; And become 90 degree orthogonality relations between these two the different BPSK constellation point mapping graphs, two path control signal is carried out being mapped to respectively on the different orthogonal branch road of time domain modulation symbol after BPSK modulation and the weighting according to separately constellation point mapping graph.
11. method according to claim 10 is characterized in that, the weight coefficient that said weighting is adopted by said CSI and ACK/NACK transmission of Information reliability requirement, to take the receive mode that bit number and base station adopts definite.
12. method according to claim 10 is characterized in that, said base station is notified to UE through the receive mode that high-level signaling adopts this base station, and UE is according to the definite corresponding weight coefficient of receive mode that adopts with the base station of this notice; Perhaps,
Said base station is notified to UE through the corresponding weight coefficient of receive mode that high-level signaling adopts this base station; Perhaps,
The base station is notified the information of parameter r to UE through high-level signaling; This parameter r is relevant with the weight coefficient ratio of receive mode, said CSI and the ACK/NACK information that adopts the base station; UE utilizes the bit number of said parameter r and current C SI and ACK/NACK information, confirms the weight coefficient ratio of said CSI and ACK/NACK information.
13. method according to claim 6; It is characterized in that; The said transmission through the DFT-S-OFDM channel is specially: the control signal addition on two quadrature branch is obtained the time domain modulation symbol that will send; This time domain modulation symbol is divided into two groups, is mapped to respectively on the time slot of sub-frame of uplink through the DFT-S-OFDM Channel Transmission.
14. method according to claim 1; It is characterized in that; Control information after handling is mapped to the DFT-S-OFDM channel to be comprised: if be assigned with the channel of transmission CSI is ascending physical signal control channel PUCCH form 2 channels, then in the control information of distributing to after sending said processing on the DFT-S-OFDM channel of ACK/NACK information;
If being assigned with the channel of transmission CSI is the DFT-S-OFDM channel, then in the control information of distributing to after sending said processing on the DFT-S-OFDM channel of CSI.
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| CN2010102546534A CN102377540A (en) | 2010-08-13 | 2010-08-13 | Method for transmitting channel state information and feedback information of hybrid automatic repeat request |
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| CN2010102546534A CN102377540A (en) | 2010-08-13 | 2010-08-13 | Method for transmitting channel state information and feedback information of hybrid automatic repeat request |
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| CN112204898A (en) * | 2018-07-06 | 2021-01-08 | 华为技术有限公司 | Apparatus and method for adaptively adjusting MIMO transmission scheme |
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