CN103152125A - Blind detection method and blind detection device for controlling information in long term evolution (LTE) system - Google Patents
Blind detection method and blind detection device for controlling information in long term evolution (LTE) system Download PDFInfo
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Abstract
Provided are a blind detection method and a blind detection device for controlling information in a long term evolution (LTE) system. The blind detection method for controlling the information in the LTE system comprises the following steps: carrying out analysis and processing on data received by receiving antennas of a base station to obtain data after channels interlace; obtaining acknowledgement/negative acknowledgement (ACK/NACK) to-be-confirmed soft information from the data after the channels interlace, and obtaining a scrambling code which carries out scrambling on ACK/NACK information from the position where an ACK/NACK signal of a scrambling code sequence carries out slotting on service data; judging whether the ACK/NACK to-be-confirmed soft information is the ACK/NACK signal through the scrambling code according to a preset screening judgment condition and the scrambling code, wherein the preset screening judgment condition is set according to characteristics of the ACK/NACK information on a planisphere position after the ACK/NACK information is modulated. According to the blind detection method and the blind detection device for controlling the information in the LTE system, the characteristics of the ACK/NACK information on the planisphere position after the ACK/NACK information is modulated are made full use of, and thus a false alarm probability can be effectively reduced, and meanwhile performance requirements of the false alarm probability and a false dismissal probability are satisfied.
Description
Technical field
The present invention relates to the blind Detecting device of control information in the blind checking method of control information in a kind of LTE system, a kind of LTE system.
Background technology
3G long evolving system (Long Term Evolution, LTE) improve and strengthened the aerial access technology of 3G system, adopt OFDM (Orthogonal Frequency Division Multiplexing, OFDM) technology, single-carrier frequency division multiple access access technology (Single Carrier-Frequency Division Multiple Access, SC-FDMA) and multiple-input and multiple-output (Multiple Input Multiple Output, MIMO) technology is as its key technology for PHY, effectively improved the performance of Cell Edge User, improve cell capacity and reduce system delay.
Mixed automatic retransfer request (Hybrid Automatic Repeat Request, HARQ) mechanism is the important leverage that prevents data-bag lost in the LTE system.First sent designator before the transmitting data bag, this designator notifies with relevant launch time and some other emission characteristicss the user who is about to receive signal.The user often receives a packet, all will send response signal: if correctly receive this bag, and user's transmitting acknowledgement (ACK) signal; If correctly do not receive this bag, the user sends one and denies (NACK) signal.The user might not detect the indicator signal from the base station.In the case, the user can not receive corresponding packet, and the user can carry out discontinuous transmission (Discontinuous Transmission, DXT), and namely the user does not launch any signal.That is to say to only have when the user receives packet, just launch ack/nack signal, otherwise do not launch ack/nack signal.Accordingly, at first the base station will judge to the demodulating process of targeted customer ACK or NACK signal whether ack/nack signal is arranged, and namely uplink ACK/NACK signal is carried out blind Detecting, again it is carried out demodulation if ack/nack signal detected.Ack/nack signal is very important in HARQ mechanism, so need to be the blind checking method of base station design high efficient and reliable, guarantees that false alarm probability and the false dismissal probability of ACK/NACK reaches the performance standard that 3GPP organizes to set up simultaneously.
In the LTE system, the ack/nack signal that the user sends can be by Physical Uplink Control Channel PUCCH or Physical Uplink Shared Channel PUSCH carrying.
The first situation, ack/nack signal is carried by PUCCH.PUCCH only is used for the transmission of control information, is divided into four kinds of form loading ACK/NACK signals of form 1a/1b/2a/2b, form 1a/1b loading ACK/NACK signal, form 2a/2b Bearer Channel quality indicator (CQI) and ack/nack signal.
The second situation, ack/nack signal is carried by PUSCH.PUSCH is used for transmitting uplink data, can carry the transferring content from the Different Logic channel on upper strata, comprise control information, customer service signal and broadcast service information, ack/nack signal through after the chnnel coding process again with coding after business information carry out transmitting uplink data through processes such as channel interleaving, scrambling, modulation, up precoding, resource mapping, SC-FDMA generations by PUSCH successively.
According to TS 36.212 agreements that 3GPP organizes to set up, the ack/nack signal of the upper transmission of PUSCH carries out chnnel coding, and after coding, the number Q ' of ACK/NACK symbol is by following formula) determine:
Wherein, O is ACK/NACK original bit number,
The sub-carrier number that finger uses for same transmission block, initial p USCH transmission,
The SC-FDMA symbolic number that finger uses for initial p USCH transmission in same transmission block, subframe;
Be bias factor; C is the code block number; K
rIt is the bit number of r code block;
Be transmission block scheduling bandwidth corresponding to current subframe, represent with the number of subcarrier.
Ack/nack signal through total bit number after encoding is: Q
ACK=Q
mQ ', for QPSK, Q
mBe 2, for 16QAM, Q
mBe 4, for 64QAM, Q
mBe 6.
If ack/nack signal bit number is 1, for example, use
Expression, ACK is expressed as bit " 1 ", and NACK is expressed as bit " 0 ", and concrete coding method is as shown in the table, and wherein x, y are for keeping the position;
With a plurality of ACK/NACK encoding block cascade calling sequences
Q wherein
ACKBe total length.
When ack/nack signal transmits on PUSCH, will punch to business datum in the channel interleaving process, in fixing resource location, sequence
Directly replace original bits of traffic data, form new business datum.In the scrambling process, bit sequence in new business datum and a known array are carried out the operation that mould 2 adds, in addition, the reservation position x, the y that produce in special processing ack/nack signal cataloged procedure, wherein x is set to bit 1, y is set to the bit identical with previous adjacent position scrambling bit, and the purpose of special processing is the Euclidean distance that maximizes the ACK/NACK modulation symbol, reduces the receiving terminal probability of failure.Through after scrambling, all bit sequences send on PUSCH through processes such as ovennodulation, up precoding, resource mapping, SC-FDMA generations successively.Above process concrete operations provide in 3GPP TS 36.211, TS 36.212 agreements.
The 3GPP Its Relevant Technology Standards has been stipulated the demodulation performance requirement of the upper ACK/NACK control information of PUSCH, false alarm probability and false dismissal probability have been defined, wherein false alarm probability P (DXT-＞ACK or NACK) expression sends DXT, is the probability of ACK/NACK by error detection; When false dismissal probability P (ACK-＞DXT or NACK) expression sends ACK, by the probability of error detection, and stipulated that false alarm probability and false dismissal probability all are no more than 10
-2
in prior art, mainly recently to judge whether to receive by noise ack/nack signal is arranged in signal, be specially: will receive signal and carry out relevant to targeted customer's basic sequence of precognition on the PUCCH channel, ask for correlation peak, judge according to the correlation peak size whether the targeted customer sends ack/nack signal, this method can effectively be distinguished ack/nack signal and DXT signal for PUCCH, its reason is that PUCCH form 1a/1b is not when sending ack/nack signal, receive signal and only have noise, correlation peak size when correlation peak and PUCCH form 1a/1b send ack/nack signal has obvious difference.But this method also is not suitable for the situation that PUSCH sends ack/nack signal.On the PUSCH channel, ack/nack signal is by rear transmission that service signal is punched, when not sending ack/nack signal, originally still have the service signal transmission on the resource of transferring ACK/NACK signal, if adopt existing signal to noise ratio method to judge, whether ack/nack signal is arranged on PUSCH, easily service signal is mistaken for ack/nack signal, causes false alarm probability to promote.
Summary of the invention
For above-mentioned problems of the prior art, the object of the present invention is to provide the blind Detecting device of control information in the blind checking method of control information in a kind of LTE system, a kind of LTE system, it can realize the accurate detection to ack/nack signal, it can effectively reduce false alarm probability, satisfies simultaneously the performance requirement of false alarm probability and false dismissal probability.
For achieving the above object, the present invention by the following technical solutions:
The blind checking method of control information in a kind of LTE system comprises step:
The Data Analysis that each reception antenna of base station is received is processed the data that obtain separating after channel interleaving;
The position that data after described solution channel interleaving, the ack/nack signal of scrambler sequence punch to business datum obtains respectively ACK/NACK soft information undetermined, to the scrambler of ACK/NACK information scrambling;
Judge according to predetermined filtering judgment condition, described scrambler whether described ACK/NACK soft information undetermined is ack/nack signal, the characteristics setting in planisphere position rear according to the modulation of ACK/NACK information of described predetermined filtering judgment condition.
The blind Detecting device of control information in a kind of LTE system comprises:
Resolution unit, the Data Analysis that is used for that each reception antenna of base station is received are processed the data that obtain separating after channel interleaving;
The information extraction unit that is connected with resolution unit, be used for position that the ack/nack signal of data, scrambler sequence after described solution channel interleaving punches to business datum obtain respectively ACK/NACK soft information undetermined, to the scrambler of ACK/NACK information scrambling;
The identifying unit that is connected with information extraction unit, be used for judging according to predetermined filtering judgment condition, described scrambler whether described ACK/NACK soft information undetermined is ack/nack signal, the characteristics setting in planisphere position rear according to the modulation of ACK/NACK information of described predetermined filtering judgment condition.
scheme according to the invention described above, after its data after obtaining separating channel interleaving, data after separating channel interleaving, the position that the ack/nack signal of scrambler sequence punches to business datum obtains respectively ACK/NACK soft information undetermined, scrambler to the scrambling of ACK/NACK information, and according to the predetermined filtering judgment condition, the scrambler of gained judges whether ACK/NACK soft information undetermined is ack/nack signal, and the predetermined filtering judgment condition is to set according to the characteristics in the planisphere position after ACK/NACK information modulation, take full advantage of the modulation of ACK/NACK information rear in the locational characteristics of planisphere, thereby can effectively reduce false alarm probability, satisfy simultaneously the performance requirement of false alarm probability and false dismissal probability.
Description of drawings
Fig. 1 is the schematic flow sheet of the blind checking method embodiment of control information in LTE of the present invention system;
Fig. 2 carries out the schematic flow sheet that dissection process obtains separating the data embodiment after channel interleaving in Fig. 1;
Fig. 3 is the planisphere of the ack/nack signal information in concrete example;
Fig. 4 is the structural representation of the blind Detecting device embodiment of control information in LTE of the present invention system.
Embodiment
Below in conjunction with concrete better embodiment, the present invention program is elaborated.
Shown in Figure 1, be the schematic flow sheet of the blind checking method embodiment of control information in LTE of the present invention system, it comprises step:
Step S101: the Data Analysis that each reception antenna of base station is received is processed the data that obtain separating after channel interleaving, enters step S102;
Step S102: the position that the data after above-mentioned solution channel interleaving, the ack/nack signal of scrambler sequence punch to business datum obtains respectively ACK/NACK soft information undetermined, to the scrambler of ACK/NACK information scrambling, enter step S103, wherein, the scrambler sequence here is to need known scrambler sequence according to communication protocol, the position that the ack/nack signal here punches to business datum is also according to the known punch position of communication protocol, can directly use, can need not to adopt ad hoc fashion to obtain;
Step S103: judge according to predetermined filtering judgment condition, above-mentioned scrambler whether above-mentioned ACK/NACK soft information undetermined is ack/nack signal, the characteristics setting in planisphere position rear according to the modulation of ACK/NACK information of the predetermined filtering judgment condition here.
Wherein, carry out process that dissection process obtains separating the data after channel interleaving in above-mentioned steps S101 and can be adopting in prior art existing mode to carry out, illustrated in Fig. 2 and carried out the schematic flow sheet that dissection process obtains separating the data embodiment after channel interleaving, it comprises step:
Step S201: the data that each reception antenna of base station is received are carried out the FFT conversion and are obtained frequency-region signal;
Step S202: the frequency-region signal that obtains is separated resource mapping, obtain user's frequency-region signal by resource scheduling information, include reference signal and user data in this user's frequency-region signal;
Step S203: according to the reference signal on described user's frequency-region signal, subscriber channel is carried out channel estimating and obtain channel estimation value;
Step S204: user's frequency-region signal is carried out equilibrium treatment according to described channel estimation value;
Step S205: the user's frequency-region signal to each antenna of user after equilibrium treatment carries out the diversity merging;
Step S206: the user's frequency domain data after diversity is merged carries out IDFT and is transformed to user's time domain data;
Step S207: user's time domain data is carried out soft demodulation obtain soft information, the soft information here refers to that received bit be 1 probability is the logarithm value of 0 probability institute total divided by received bit;
Step S208: soft information is separated data after channel interleaving obtains separating channel interleaving.
scheme according to the invention described above, after its data after obtaining separating channel interleaving, data after separating channel interleaving, the position that the ack/nack signal of scrambler sequence punches to business datum obtains respectively ACK/NACK soft information undetermined, scrambler to the scrambling of ACK/NACK information, and according to the predetermined filtering judgment condition, the scrambler of gained judges whether ACK/NACK soft information undetermined is ack/nack signal, and the predetermined filtering judgment condition is to set according to the characteristics in the planisphere position after ACK/NACK information modulation, take full advantage of the modulation of ACK/NACK information rear in the locational characteristics of planisphere, thereby can effectively reduce false alarm probability, satisfy simultaneously the performance requirement of false alarm probability and false dismissal probability.
Wherein, after foundation ACK/NACK information modulation when the characteristics of planisphere position are set the predetermined filtering judgment condition, this predetermined filtering judgment condition can be any one or the combination in any that comprises in following four conditions, under preferable case, can be to satisfy simultaneously following four conditions, judge accurately can realize:
According to scrambler to ACK/NACK soft information descrambling undetermined after the ratio of root-mean-square value of income value and ACK/NACK soft information undetermined be greater than or equal to the first set point, first set point here is greater than 0;
After ACK/NACK soft information conversion undetermined was the sub-encoding block of a plurality of ACK/NACK, the number sum that in the sub-encoding block of each ACK/NACK, the soft information symbol of front two is identical was greater than or equal to the second set point, and second set point here is greater than 0;
After ACK/NACK soft information conversion undetermined is the sub-encoding block of a plurality of ACK/NACK, the 3rd～Q in the sub-encoding block of each ACK/NACK
mIn the position, symbol is that positive number sum is greater than or equal to the 3rd set point, the Q here
mBe the order of modulation on PUSCH, the 3rd set point here is greater than 0;
According to scrambler to ACK/NACK soft information descrambling undetermined after income value symbol and be greater than or equal to the 4th set point, the 4th set point here is greater than 0.
According to the invention described above scheme, below carry out illustrated in greater detail with one of them specific embodiment.In this specific embodiment, describe as an example of the blind Detecting of the upper ACK/NACK control information of PUSCH example, and the ack/nack signal of supposing 1 bit transmits on the LTE of the 15.36MHz sample rate PUSCH of system, wherein, the LTE system configuration is TS 36.141 agreement appendix A fixed reference channel FRC 4-6, can obtain Q thus
mBe 4, and can calculate Q
ACKBe 12.
The ACK information of 1 bit is Q through redundancy encoding
mAfter the encoding block of bit length, then through repeating to be encoded into Q
ACKThe sequence of bit length
In PUSCH channel interleaving process, Q
ACKThe ACK/NACK coded sequence of bit length punches to business datum, in fixing resource location, sequence
Directly replace original bits of traffic data, form new business datum; In PUSCH scrambling process, carry out with a known scrambler bit sequence and bits of traffic data the operation that mould 2 adds, in addition, the reservation position x, the y that produce in special processing ack/nack signal cataloged procedure, wherein x is set to bit 1, and y is set to the bit identical with previous adjacent position scrambling bit; In the PUSCH modulated process, scrambled data is carried out Q
mBe 4 16QAM modulation, the ACK/NACK coded message is modulated onto gray area place constellation point in Fig. 3.
Subsequently, during the blind Detecting of ack/nack signal, detailed process can be on carrying out PUSCH:
The base station is carried out the FFT conversion to receive data and is obtained frequency-region signal;
This frequency-region signal is separated the resource mapping operation;
Utilize the reference signal of separating in the rear the data obtained of resource mapping operation to carry out channel estimating, and according to the channel estimation value that obtains, data are done equilibrium treatment, here the Channel Equalization Algorithm of selecting can be any one algorithm, for example LS (Least Square) minimum variance algorithm, MMSE (Minimum Mean Square Error) least-mean-square error algorithm or any other channel estimation method known or that propose in the future;
The data of each reception antenna after frequency domain equalization are carried out diversity merge, when carrying out the diversity merging, selected merge algorithm can be high specific merge algorithm, equal gain combining algorithm or any other merge algorithm known or that propose in the future;
After diversity is merged, resulting data are carried out the IDFT conversion, and the data obtained after the IDFT conversion is carried out Q
mBe 4 the soft demodulation of 16QAM, obtain soft information, the soft demodulating algorithm of selecting here can be any soft demodulating algorithm, for example LLR (Log-Likelihood Ratio) log-likelihood ratio algorithm or any other soft demodulating algorithm known or that propose in the future;
The soft information that obtains is separated channel interleaving;
Data after separating channel interleaving, in the position that known ack/nack signal punches to business datum, take out the Q of ACK/NACK
ACKIndividual soft information undetermined from scrambler sequence, in the position that known ack/nack signal punches to business datum, is taken out the Q of ACK/NACK correspondence position
ACKIndividual scrambler, and be converted to the bipolarity scrambler, when being converted to the bipolarity scrambler, 0 of 1 ,-1 expression scrambler bit sequence of available+1 expression scrambler bit sequence;
Then according to predetermined filtering judgment condition, above-mentioned Q
ACKIndividual scrambler judges the Q of taking-up
ACKIndividual soft information undetermined is ACK/NACK information or DXT information, if satisfy the predetermined filtering judgment condition, judges this Q
ACKIndividual soft information undetermined is ACK/NACK information, and it is carried out decoding obtains 0 or 1, otherwise judges it is DXT information, can not carry out any operation.
The predetermined filtering judgment condition is here set according to the characteristics in the planisphere position after ACK/NACK information modulation, in this concrete example of the present invention, is set with following four conditions, specifically comprises:
1) condition1 is more than or equal to n1, and wherein n1 is greater than 0;
Condition1 be the basis scrambler to ACK/NACK soft information descrambling undetermined after the ratio of income value and ACK/NACK soft information root-mean-square value undetermined;
According to Q obtained above
ACKIndividual ACK/NACK soft information undetermined is calculated its root-mean-square value ave_power, and the absolute value ACK_power of basis scrambler after to ACK/NACK soft information descrambling undetermined, obtains condition1=ACK_power/ave_power;
Wherein ave_power and ACK_power computational process can be respectively:
With Q
ACKIndividual ACK/NACK soft information undetermined converts Q to
mRow Q
n=floor (Q
ACK/ Q
m) matrix of row, be the matrix of 4 row 3 row in this concrete example, be matrix
Again ACK/NACK soft information matrix undetermined is got symbol, obtain sign matrix
With Q
ACKIndividual bipolarity scrambler also converts Q to
mRow Q
nThe matrix of row
Have
If condition1 is greater than or equal to n1, judges and satisfy this condition, for example: condition1 〉=7.
2) condition2 is more than or equal to n2, and wherein n2 is greater than 0;
The computational methods of condition2 are that every in statistical matrix S_ACK to be listed as front 1～2 row value of symbol be 1 simultaneously or be simultaneously-1 quantity, namely
If condition2 is greater than or equal to n2, judges and satisfy this condition, for example: condition2 〉=2.
3) condition3 is more than or equal to n3, and wherein n3 is greater than 0;
The computational methods of condition3 are the 3rd～Q in statistical matrix S_ACK
mIn row, value of symbol is 1 quantity, namely
If condition3 is greater than or equal to n3, judges and satisfy this condition, for example: condition3 〉=4.
4) condition4 is more than or equal to n4, and wherein n4 is greater than 0;
The computational methods of condition4 are values of gained after statistical matrix S_ACK and scrambling matrix descrambling, namely
If condition4 is greater than or equal to n4, judges and satisfy this condition, for example: condition4 〉=4.
If above-mentioned four conditions satisfy simultaneously, judge Q
ACKIndividual soft information undetermined is ACK/NACK information, and it is carried out decoding obtains 0 or 1; Otherwise judge it is DXT information, can not carry out any operation.Wherein, there is no incidence relation between said n 1, n2, n3, n4, can set respectively.
The structural representation of the blind Detecting device embodiment of control information in LTE of the present invention system has been shown in Fig. 4, and it includes:
The information extraction unit 402 that is connected with resolution unit 401, be used for position that the ack/nack signal of data, scrambler sequence after separating channel interleaving punches to business datum obtain respectively ACK/NACK soft information undetermined, to the scrambler of ACK/NACK information scrambling, wherein, the scrambler sequence here is to need known scrambler sequence according to communication protocol, the position that the ack/nack signal here punches to business datum is also according to the known punch position of communication protocol, can directly use, can need not to adopt ad hoc fashion to obtain;
The identifying unit 403 that is connected with information extraction unit 402, be used for judging according to predetermined filtering judgment condition, above-mentioned scrambler whether above-mentioned ACK/NACK soft information undetermined is ack/nack signal, the characteristics setting in planisphere position rear according to the modulation of ACK/NACK information of the predetermined filtering judgment condition here.
Wherein, above-mentioned resolution unit 401 specifically can comprise:
Solution resource mapping unit 4012 is used for described frequency-region signal is separated resource mapping, obtains user's frequency-region signal by resource scheduling information, includes reference signal and user data in this user's frequency-region signal;
Separate channel interleaving unit 4018, be used for soft information is separated data after channel interleaving obtains separating channel interleaving.
scheme according to the invention described above, after its data after obtaining separating channel interleaving, data after separating channel interleaving, the position that the ack/nack signal of scrambler sequence punches to business datum obtains respectively ACK/NACK soft information undetermined, scrambler to the scrambling of ACK/NACK information, and according to the predetermined filtering judgment condition, the scrambler of gained judges whether ACK/NACK soft information undetermined is ack/nack signal, and the predetermined filtering judgment condition is to set according to the characteristics in the planisphere position after ACK/NACK information modulation, take full advantage of the modulation of ACK/NACK information rear in the locational characteristics of planisphere, thereby can effectively reduce false alarm probability, satisfy simultaneously the performance requirement of false alarm probability and false dismissal probability.
Wherein, after foundation ACK/NACK information modulation when the characteristics of planisphere position are set the predetermined filtering judgment condition, this predetermined filtering judgment condition can be any one or the combination in any that comprises in following four conditions, under preferable case, can be to satisfy simultaneously following four conditions, judge accurately can realize:
According to scrambler to ACK/NACK soft information descrambling undetermined after the ratio of root-mean-square value of income value and ACK/NACK soft information undetermined be greater than or equal to the first set point, first set point here is greater than 0;
After ACK/NACK soft information conversion undetermined was the sub-encoding block of a plurality of ACK/NACK, the number sum that in the sub-encoding block of each ACK/NACK, the soft information symbol of front two is identical was greater than or equal to the second set point, and second set point here is greater than 0;
After ACK/NACK soft information conversion undetermined is the sub-encoding block of a plurality of ACK/NACK, the 3rd～Q in the sub-encoding block of each ACK/NACK
mIn the position, symbol is that positive number sum is greater than or equal to the 3rd set point, the Q here
mBe the order of modulation on PUSCH, the 3rd set point here is greater than 0;
According to scrambler to ACK/NACK soft information descrambling undetermined after income value symbol and be greater than or equal to the 4th set point, the 4th set point is greater than 0.
Identical in the blind checking method of the concrete analysis mode when in LTE of the present invention system, the blind Detecting device of control information carries out blind Detecting, information extraction mode, decision procedure and the invention described above do not repeat them here.
In existing LTE system, there are two kinds of communication patterns, fdd mode and tdd mode, the blind Detecting device of the blind checking method of the control information of the invention described above scheme, control information, all can use in these two kinds of patterns (fdd mode, tdd mode), not repeat them here.
Above-described embodiment of the present invention is only the detailed description to better embodiment of the present invention, does not consist of the restriction to protection range of the present invention.Any modification of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in claim protection range of the present invention.
Claims (8)
1. the blind checking method of control information in a LTE system, is characterized in that, comprises step:
The Data Analysis that each reception antenna of base station is received is processed the data that obtain separating after channel interleaving;
The position that data after described solution channel interleaving, the ack/nack signal of scrambler sequence punch to business datum obtains respectively ACK/NACK soft information undetermined, to the scrambler of ACK/NACK information scrambling;
Judge according to predetermined filtering judgment condition, described scrambler whether described ACK/NACK soft information undetermined is ack/nack signal, the characteristics setting in planisphere position rear according to the modulation of ACK/NACK information of described predetermined filtering judgment condition.
2. the blind checking method of control information in LTE according to claim 1 system, is characterized in that, described predetermined filtering judgment condition comprises any one or the combination in any in following four conditions:
According to scrambler to ACK/NACK soft information descrambling undetermined after the ratio of root-mean-square value of income value and ACK/NACK soft information undetermined be greater than or equal to the first set point, described the first set point is greater than 0;
After ACK/NACK soft information conversion undetermined was the sub-encoding block of a plurality of ACK/NACK, the number sum that in the sub-encoding block of each ACK/NACK, the soft information symbol of front two is identical was greater than or equal to the second set point, and described the second set point is greater than 0;
After ACK/NACK soft information conversion undetermined is the sub-encoding block of a plurality of ACK/NACK, the 3rd～Q in the sub-encoding block of each ACK/NACK
mIn the position, symbol is that positive number sum is greater than or equal to the 3rd set point, described Q
mBe the order of modulation on PUSCH, described the 3rd set point is greater than 0;
According to scrambler to ACK/NACK soft information descrambling undetermined after income value symbol and be greater than or equal to the 4th set point, described the 4th set point is greater than 0.
3. the blind checking method of control information in LTE according to claim 1 and 2 system, is characterized in that, described dissection process comprises:
The data that each reception antenna of base station is received are carried out the FFT conversion and are obtained frequency-region signal;
Described frequency-region signal is separated resource mapping, obtain user's frequency-region signal by resource scheduling information;
According to the reference signal on described user's frequency-region signal, subscriber channel is carried out channel estimating, obtain channel estimation value;
According to described channel estimation value, user's frequency-region signal is carried out equilibrium treatment;
Frequency-region signal to each antenna of user after equilibrium treatment carries out the diversity merging;
User's frequency domain data after diversity is merged carries out IDFT and is transformed to user's time domain data;
User's time domain data is carried out soft demodulation obtain soft information, soft information is separated data after channel interleaving obtains separating channel interleaving, described soft information refers to that received bit be 1 probability is the logarithm value of 0 probability institute total divided by received bit.
4. the blind checking method of control information in LTE according to claim 3 system is characterized in that:
Adopt LS algorithm or MMSE algorithm to carry out equilibrium treatment;
And/or
Adopting high specific merge algorithm or gain merge algorithm to carry out diversity merges;
And/or
Adopt the LLR algorithm to carry out soft demodulation.
5. the blind Detecting device of control information in a LTE system, is characterized in that, comprising:
Resolution unit, the Data Analysis that is used for that each reception antenna of base station is received are processed the data that obtain separating after channel interleaving;
The information extraction unit that is connected with resolution unit, be used for position that the ack/nack signal of data, scrambler sequence after described solution channel interleaving punches to business datum obtain respectively ACK/NACK soft information undetermined, to the scrambler of ACK/NACK information scrambling;
The identifying unit that is connected with information extraction unit, be used for judging according to predetermined filtering judgment condition, described scrambler whether described ACK/NACK soft information undetermined is ack/nack signal, the characteristics setting in planisphere position rear according to the modulation of ACK/NACK information of described predetermined filtering judgment condition.
6. the blind Detecting device of control information in LTE described according to right 5 system, is characterized in that, described predetermined filtering judgment condition comprises any one or the combination in any in following four conditions:
According to scrambler to ACK/NACK soft information descrambling undetermined after the ratio of root-mean-square value of income value and ACK/NACK soft information undetermined be greater than or equal to the first set point, described the first set point is greater than 0;
After ACK/NACK soft information conversion undetermined was the sub-encoding block of a plurality of ACK/NACK, the number sum that in the sub-encoding block of each ACK/NACK, the soft information symbol of front two is identical was greater than or equal to the second set point, and described the second set point is greater than 0;
After ACK/NACK soft information conversion undetermined is the sub-encoding block of a plurality of ACK/NACK, the 3rd～Q in the sub-encoding block of each ACK/NACK
mIn the position, symbol is that positive number sum is greater than or equal to the 3rd set point, described Q
mBe the order of modulation on PUSCH, described the 3rd set point is greater than 0;
According to scrambler to ACK/NACK soft information descrambling undetermined after income value symbol and be greater than or equal to the 4th set point, described the 4th set point is greater than 0.
7. the blind Detecting device of control information according to claim 5 or 6 described LTE systems, is characterized in that, described resolution unit comprises:
The FFT converter unit is used for that the data that each reception antenna of base station receives are carried out the FFT conversion and obtains frequency-region signal;
Solution resource mapping unit is used for described frequency-region signal is separated resource mapping, obtains user's frequency-region signal by resource scheduling information;
Channel estimating unit is used for according to the reference signal on described user's frequency-region signal, subscriber channel being carried out channel estimating and obtains channel estimation value;
Balanced unit is used for according to described channel estimation value, user's frequency-region signal being carried out equilibrium treatment;
The diversity merge cells is used for user's frequency-region signal of each antenna of user after equilibrium treatment is carried out the diversity merging;
The IDFT converter unit, the user's frequency domain data after being used for diversity is merged carries out IDFT and is transformed to user's time domain data;
Soft demodulating unit is used for that user's time domain data is carried out soft demodulation and obtains soft information, and described soft information refers to that received bit be 1 probability is the logarithm value of 0 probability institute total divided by received bit;
Separate the channel interleaving unit, be used for soft information is separated data after channel interleaving obtains separating channel interleaving.
8. the blind Detecting device of control information in LTE according to claim 7 system is characterized in that:
Balanced unit adopts LS algorithm or MMSE algorithm to carry out equilibrium treatment;
And/or
The diversity merge cells adopts high specific merge algorithm or gain merge algorithm to carry out the diversity merging;
And/or
Soft demodulating unit adopts the LLR algorithm to carry out soft demodulation.
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