CN101174857A - Sequence distribution method, sequence processing method and device in communication system - Google Patents

Sequence distribution method, sequence processing method and device in communication system Download PDF

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Publication number
CN101174857A
CN101174857A CNA2007101115337A CN200710111533A CN101174857A CN 101174857 A CN101174857 A CN 101174857A CN A2007101115337 A CNA2007101115337 A CN A2007101115337A CN 200710111533 A CN200710111533 A CN 200710111533A CN 101174857 A CN101174857 A CN 101174857A
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sequence
running time
frequency resource
sequence set
sequences
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曲秉玉
何玉娟
王程宇
党淑君
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CNA2007101115337A priority Critical patent/CN101174857A/en
Priority to DK07816965.3T priority patent/DK2068455T3/en
Priority to KR1020097008639A priority patent/KR101074884B1/en
Priority to SI200730684T priority patent/SI2068455T1/en
Priority to CN2010102306526A priority patent/CN101924598B/en
Priority to PT110040672T priority patent/PT2360849E/en
Priority to CN202010650098.0A priority patent/CN111884781B/en
Priority to PL07816965T priority patent/PL2068455T3/en
Priority to CN201210516511.XA priority patent/CN102983957B/en
Priority to JP2009529504A priority patent/JP4995914B2/en
Priority to EP11004069.8A priority patent/EP2360851B1/en
Priority to EP11004068.0A priority patent/EP2360850B1/en
Priority to AU2007308605A priority patent/AU2007308605B2/en
Priority to EP07816965A priority patent/EP2068455B1/en
Priority to PCT/CN2007/070774 priority patent/WO2008049358A1/en
Priority to PT07816965T priority patent/PT2068455E/en
Priority to AT07816965T priority patent/ATE510360T1/en
Priority to EP19161785.1A priority patent/EP3585018A1/en
Priority to CN200780001879XA priority patent/CN101366193B/en
Priority to EP11004067.2A priority patent/EP2360849B1/en
Priority to CN201710610142.3A priority patent/CN107395314B/en
Priority to PL11004068T priority patent/PL2360850T3/en
Publication of CN101174857A publication Critical patent/CN101174857A/en
Priority to US12/413,105 priority patent/US9294245B2/en
Priority to US12/982,655 priority patent/US7983237B2/en
Priority to CY20111100774T priority patent/CY1111761T1/en
Priority to JP2012108117A priority patent/JP5647177B2/en
Priority to JP2014225848A priority patent/JP6044034B2/en
Priority to US15/045,270 priority patent/US10305661B2/en
Priority to JP2016177523A priority patent/JP6548332B2/en
Priority to US16/419,008 priority patent/US10764011B2/en
Priority to US17/006,790 priority patent/US11811697B2/en
Priority to US18/186,446 priority patent/US20230299927A1/en
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Abstract

The present invention provides a method and a device for collocating and processing in sequence in the communication system. The method comprises that based on the time frequency resources occupation pattern of the sequence which is supported by the system, a sequence group consisting of a plurality of sequences is produced; the sequence group is collocated for cells. The technical proposal provided with the present invention can make the sequence between groups have the low relativity to ensure that the interference between cells can be reduced when the time frequency sources occupied by the signal of sequence modulation in difference cells are overlapped.

Description

Sequence allocating method, series processing method and device in the communication system
Technical field
The present invention relates to communication technical field, relate in particular to sequence allocating method in the communication system, series processing method and device.
Background technology
The characteristic that CAZAC (constant amplitude zero auto-correlation, normal amplitude zero autocorrelation performance) sequence has comprises:
The mould of amplitude is a constant value.For example can be normalized to 1.
Null cycle autocorrelation.Except with self correlation maximum, other cyclic shift autocorrelation value of this sequence self is zero.
Sequence with above-mentioned character, after Fourier (Fourier) conversion, its sequence at frequency domain also is the CAZAC sequence, promptly also has normal amplitude and zero autocorrelation performance on frequency domain.
Because the above-mentioned characteristic that the CAZAC sequence has comes into one's own it gradually in Communication System Design.The signal of carrying CAZAC sequence extensively adopts in communication system.For example in single-carrier frequency division multiple access (SC-FDMA) system, in a symbol time, sequence modulation is launched on each subcarrier.If the known sequence that transmits, receiver just can utilize the signal that receives, and carries out the estimation of channel.Because the CAZAC sequence is normal amplitude in time domain, therefore the waveform peak-to-average force ratio on time-domain is little, is easy to the transmitter emission.
Simultaneously because the signal of emission amplitude on each subcarrier on the frequency domain equates that receiver can compare the fair channel fading that estimates on each subcarrier, can be not smaller because of signal amplitude on a subcarrier, and influence estimation performance.
At present, the method for cell allocation CAZAC sequence is: the running time-frequency resource occupancy mode at each sequence distributes a CAZAC sequence.And the running time-frequency resource occupancy mode of the CAZAC sequence of distributing at the needs of different districts is when identical, for different cell allocation length identical, lower different CAZAC sequences of correlation between sequence, above-mentioned different CAZAC sequence comprises the CAZAC sequence that sequence indicator is different.Thereby make between different districts the interference ratio of signal less.For example, in accompanying drawing 1, the running time-frequency resource occupancy mode of the sequence among sub-district A and the sub-district B is overlapping fully, then distributes a CAZAC sequence that length is identical for sub-district A respectively with sub-district B, and the correlation of these two CAZAC sequences is lower, thereby has avoided the interference of signal between sub-district A and sub-district B.
In realizing process of the present invention, the inventor finds to exist at least in the prior art following two problems:
1, takies a large amount of wireless network transmissions resources.In the method for existing distribution CAZAC sequence, when needs carry out the CAZAC series processing, all need to be transmitted as cell allocation CAZAC sequence by signaling at every kind of running time-frequency resource occupancy mode, these have taken a large amount of wireless network transmissions resources for the signaling of cell allocation CAZAC sequence.
When 2, the running time-frequency resource occupancy mode of not considering the CAZAC sequence of different districts is overlapped, also can there be the interference of inter-cell signal.In the process of existing distribution CAZAC sequence, if the running time-frequency resource occupancy mode of the CAZAC sequence that the needs of different districts distribute is incomplete same, then not think the interference that can produce inter-cell signal, therefore, when distributing the CAZAC sequence, be not thought of as the correlation between the CAZAC sequence that different districts distributes.For example, under the partly overlapping situation of running time-frequency resource occupancy mode of the sequence of sub-district A shown in accompanying drawing 2,3 and sub-district B, if for sub-district A and sub-district B divide the correlation of other CAZAC sequence higher, then there is interference equally in signal between sub-district A and sub-district B.
Summary of the invention
In view of this, the embodiment of the invention provides sequence allocation and series processing method and device in the communication system, saved the wireless network transmissions resource that takies in the assigned sequence process as much as possible, and have when overlapping at the running time-frequency resource occupancy mode of the sequence of different districts, reduce the interference of signal between different districts.
The embodiment of the invention provides sequence allocating method in a kind of communication system, and this method comprises:
Running time-frequency resource occupancy mode according to the sequence of system's support generates the sequence set that comprises a plurality of sequences;
Be the described sequence set of cell allocation.
The embodiment of the invention also provides a kind of series processing method, and this method comprises:
Determine to distribute to the sequence set of sub-district, described sequence set generates according to the running time-frequency resource occupancy mode of the sequence of system's support and comprises a plurality of sequences;
According to the running time-frequency resource mode that sequence takies, in the sequence set of described sub-district, determine and formation sequence;
Sequence to described generation is carried out series processing.
The embodiment of the invention also provides a kind of radio communication device, is used for processing signals, and described device comprises:
The sequence of cells determining unit is used to determine to distribute to the sequence set of sub-district;
Running time-frequency resource sequence determining unit, the running time-frequency resource mode that the sequence that is used for handling as required takies is determined the sequence that needs generate in described sequence set;
Sequence generating unit is used for determining the sequence formation sequence that needs generate according to described running time-frequency resource sequence; And processing unit, be used to utilize the sequence of described generation to carry out series processing.
The technical scheme that the embodiment of the invention provides, by comprise the sequence set of a plurality of sequences for cell allocation, sequence in the described sequence set is determined according to the running time-frequency resource occupancy mode of the sequence that system supports, can make the not homotactic correlation between sequence set low, when guaranteeing that running time-frequency resource that different sub-districts utilizes the signal of sequence modulation to take is incomplete same, the interference ratio of minizone is less; By comprise the sequence set of a plurality of sequences for cell allocation, avoided all needing to be transmitted as the phenomenon of cell allocation sequence by signaling at different running time-frequency resource occupancy modes, saved the wireless network transmissions resource that takies in the assigned sequence process as much as possible.
Description of drawings
Fig. 1 is the complete overlapping schematic diagram of running time-frequency resource occupancy mode of the sequence of prior art different districts;
Fig. 2 is the running time-frequency resource occupancy mode of the sequence of the prior art different districts schematic diagram one of overlapping;
Fig. 3 is the running time-frequency resource occupancy mode of the needs of the prior art different districts schematic diagram two of overlapping;
Fig. 4 is the schematic flow sheet of the method for the sequence allocation of embodiment of the present invention and processing;
Fig. 5 is the schematic diagram of the correlation of short-and-medium sequence of the specific embodiment of the invention and long sequence fragment;
Fig. 6 is the schematic diagram of the correlation of the fragment of sequence in the specific embodiment of the invention and sequential sampling;
The structural representation of Fig. 7 for installing in the system of the present invention.
Embodiment
Below in conjunction with Figure of description the specific embodiment of the present invention is described.
Fig. 4 is the schematic flow sheet of sequence allocation and series processing method embodiment in the communication system.
Among Fig. 4, step 401, generate the sequence set include a plurality of sequences, and for cell allocation includes the sequence set of a plurality of sequences, the sequence in this sequence set is definite according to the running time-frequency resource occupancy mode of the sequence that system supports.The running time-frequency resource occupancy mode of sequence promptly carries the running time-frequency resource mode of sequence, also is the corresponding relation of sequence and running time-frequency resource.To step 402.Correlation in the embodiment of the present invention between the different sequence set can be smaller, the sequence in the promptly different sequence set on being modulated to corresponding running time-frequency resource after, the correlation between the sequence is smaller.Be included as the user/channel allocation sequence set of sub-district for the effect of cell allocation sequence set.
When subscriber terminal side need be carried out series processing for example the transmission of sequence is handled, step 402, user terminal determine to distribute to the sequence set of this sub-district, then, the running time-frequency resource occupancy mode of the sequence that user terminal sends as required need to determine the sequence of transmission from the sequence set of this sub-district, and generates corresponding sequence.For example, user terminal is determined the identification information of the sequence that needs send, and generates corresponding sequence according to this identification information.In this step, user terminal can according to the information of sub-district for example the identification information of sub-district determine to distribute to the sequence set of this sub-district, user terminal also can determine to distribute to the sequence set of this sub-district according to the identification information of the sequence set of distributing to this sub-district.To step 403.Step 403, user terminal utilize the sequence of described generation to carry out the signal modulation, and send the signal after the modulation.
When network side need carry out series processing, when for example the reception of sequence is handled, step 402, network side determine to distribute to the sequence set of respective cell, then, the running time-frequency resource occupancy mode of the sequence that network side receives as required need to determine the sequence of reception from the sequence set of this sub-district, and generates corresponding sequence.For example, network side is determined the identification information of the sequence that needs send, and generates corresponding sequence according to this identification information.In this step, network side can according to the information of sub-district for example the identification information of sub-district determine to distribute to the sequence set of sub-district, network side also can determine to distribute to the sequence set of this sub-district according to the identification information of the sequence set of distributing to the sub-district.To step 403.Step 403, network side utilize the sequence of described generation to carry out sequential reception and handle.For example, network side utilizes the sequence of described generation and the signal that receives to carry out related operation.
In the description of above-mentioned execution mode, can be for sequence set of cell allocation, also can be a plurality of sequence set of cell allocation.Sequence in sequence set is to determine that according to the running time-frequency resource occupancy mode of sequence the cross correlation value of the sequence in the sequence set can be bigger, and the cross correlation value between the sequence in the different sequence set is less.That is to say that can promptly the cross correlation value between the sequence can be divided in same sequence set at bigger sequence according to the correlation formation sequence group between the sequence, sequence that can the cross correlation value between the sequence is less is divided in different sequence set.Like this, under the partly overlapping situation of running time-frequency resource occupancy mode of the sequence of different districts, can guarantee that also the interference of inter-cell signal is less.
Sequence in the sequence set of embodiment of the present invention can be the CAZAC sequence, and the CAZAC sequence can be the Zadoff-Chu sequence, also can be GCL sequence etc.
The generation expression formula of Zadoff-Chu sequence can be for shown in the formula (1):
a r , N ( n ) = W N n ( n + N mod 2 ) / 2 + qn , N=0,1 ..., N-1; Formula (1)
Wherein, a R, N(n) expression is with the sequence of index r generation, and n represents n unit of sequence, and N represents the length of sequence, W N=exp (j2 π r/N), r is the number relatively prime with N, q is an integer arbitrarily.
According to formula (1) as can be known, the length that parameter N can control sequence, the different sequences that generate equal length can be controlled by index r, and the cyclic shift that q can corresponding Zadoff-Chu sequence can think that also different q can corresponding different sequences.
When embodiment of the present invention is determined sequence in the sequence set at the running time-frequency resource occupancy mode that utilizes sequence, can determine sequence in the sequence set according to the running time-frequency resource of the different bandwidth of different sequence correspondences, the running time-frequency resource of also can be according to the corresponding different sampling intervals of different sequences and having same band after extracting is determined the sequence in the sequence set, can also determine sequence in the sequence set according to the position of the different time of different sequence correspondences.Certainly, also can determine sequence in the sequence set according to other running time-frequency resource occupancy mode, for example, can be according to the different sampling intervals and the running time-frequency resource that has different bandwidth after extracting determine sequence in the sequence set.Embodiment of the present invention does not limit the concrete manifestation form of the running time-frequency resource occupancy mode of sequence.
Below to the formation sequence group, and determine the sequence in the sequence set and describe for the specific implementation process of user/methods such as channel allocation sequence.
Specific embodiment one
Under the situation that the running time-frequency resource of the running time-frequency resource of the corresponding different bandwidths of different sequences and different bandwidth overlaps, for example under situation as shown in Figure 2, the formation sequence group, and determine the sequence in the sequence set method can for:
Be set in the running time-frequency resource of 5MHz bandwidth, one has 150 available subcarriers, the running time-frequency resource occupancy mode of the sequence of system's support comprises two kinds, a kind of for the running time-frequency resource of 5MHz bandwidth being divided into the running time-frequency resource of 4 1.25MHz bandwidth, then the running time-frequency resource occupancy mode of CAZAC sequence is the running time-frequency resource occupancy mode of 1.25MHz bandwidth, i.e. 1.25MHz transmitted bandwidth; Another kind is the running time-frequency resource occupancy mode of 5MHz bandwidth for the running time-frequency resource occupancy mode of CAZAC sequence, i.e. the 5MHz transmitted bandwidth.
For the 5MHz transmitted bandwidth, the length of the CAZAC sequence of 150 all available subcarrier correspondences can be the prime number of N=151, can be 150 with the length intercepting of CAZAC sequence.
For the 1.25MHz transmitted bandwidth, the number of available subcarrier can be prime number 37, and then the length of the CAZAC sequence of 37 available subcarrier correspondences in the 1.25MHz transmitted bandwidth can be the prime number of N=37.
Running time-frequency resource occupancy mode in sequence comprises two kinds, be 1.25MHz transmitted bandwidth and 5MHz transmitted bandwidth, and comprise in the same sequence set under the situation of two Zadoff-Chu sequences, utilize the process of the sequence in Zadoff-Chu sequence formation sequence group and the sequence set to be:
37 long Zadoff-Chu sequences are got r=25k, k=-18 wherein, and-17 ,-16 ... ,-1,1,2..., 18; 150 long Zadoff-Chu sequence fragments, just the fragment of the Zadoff-Chu sequence of 151 length is got r=102k, k=-75 ,-74 ... ,-1,1,2 ..., 75.37 long Zadoff-Chu sequences are short sequence, and 150 long Zadoff-Chu sequences are long sequence.
Long sequence can comprise 150 Zadoff-Chu sequences, short sequence can comprise 36 Zadoff-Chu sequences, because getting two Zadoff-Chu sequences of same k is a sequence set, two Zadoff-Chu sequences of different k constitute different sequence set, so, do not allow the reusable words of short sequence, after above-mentioned long sequence and short sequence are got common factor, can generate 36 sequence set.If allow the reusable words of short sequence, then can generate 150 sequence set.In the Practical Calculation process, can carry out the calculating of mould N to r, N is the length of Zadoff-Chu sequence.When k=± 37, ± 74 o'clock, r=(k25) mod37=0, and r is when being zero, not corresponding Zadoff-Chu sequence, therefore, and k=± 37, ± 74 can remove, and like this, can generate 146 sequence set.
In general, when different sequences took the running time-frequency resource of different bandwidth, promptly at not homotactic bandwidth running time-frequency resource occupancy mode not simultaneously, the index of the length sequence of the running time-frequency resource correspondence of two different bandwidths should satisfy: r i=b iK+ δ i, i=1,2; Wherein: identical k represents identical sequence set, b i, δ iDetermine by the running time-frequency resource that sequence takies, i=1,2 are used to distinguish different running time-frequency resources.b 1, b 2The ratio decision of the running time-frequency resource that takies by sequence, specifically, b 1, b 2The number decision of the subcarrier that takies by two sequences.For example, for the 1.25MHz bandwidth, the subcarrier number that sequence takies is N 1=37; For the 5MHz bandwidth, the subcarrier number that the sequence that intercepts takies is N 2=151, at definite b 1, b 2The time, can determine b according to numerical value near 37/151 1, b 2, as b 1=1, b 2=4.A kind of more excellent mode is: according to formula b 1N 2-b 2N 1=1 determines b 1, b 2, as b 1=25, b 2=102, and choose k=-L ,-L+1 ... ,-1,1,2 ..., L-1, L, L=(N 1-1)/and 2=(37-1)/2=18, δ 1=0, δ 2=± 1, ± 2 ....Perhaps, also can select δ 1=δ 2=0, k=-L ,-L+1 ... ,-1,1,2 ..., L-1, L, L=(N 2-1)/2=(151-1)/2=75, and k ≠ m37, m=0, ± 1, ± 2 ... integer.Wherein: k, the 37 long sequences that comprise in the k+m37 sequence set are identical, but the 151 long sequences that comprise are inequality.
Embodiment of the present invention can generate 36 sequence set, and length is that 151 sequence can have one or more in each sequence set.No matter be to have generated 36 sequence set, still generated 146 sequence set, after the formation sequence group, can be for different cell allocation different sequence set.
In another embodiment, be N if also have a kind of length 3=307 long sequences then when the formation sequence group, can comprise the sequence of three kinds of length in sequence set, comprise that promptly length is respectively 37,151,307 sequence.And still can generate 36 sequence set, length is that 151 sequence and length are that the individual number average of 307 sequence can be one or more in each sequence set.
Especially, sequence in sequence set such as CAZAC sequence fragment if be applied in certain territory such as the frequency domain carrying in, then can also carry out cyclic shift to the sequence in the sequence set in other territory handles, the new sequence that generates after the cyclic shift can be used as the sequence in this sequence set, also can be used as the sequence in other sequence set.For example, CAZAC sequence fragment in a sequence set is applied in the frequency domain carrying, inverse-Fourier transform then can disperse the CAZAC sequence fragment in this sequence set, obtain time domain waveform, promptly obtain the sequence in the time domain, then, the sequence in the time domain is carried out cyclic shift generates sequence on one or more time domains, again with the sequence on the time domain as the sequence in this sequence set or other sequence set.
The sequence that the cyclic shift of a sequence produces when distributing to different sequence set, can think that the sequence that produces after the cyclic shift is a plurality of sequences.If thereby the sequence in the sequence set is carried out different cyclic shifts, then can produce different sequence set.
Above-mentioned cyclic shift is about to one section front that copies to this sequence, back of sequence.For example, be that sequence is { a if former CAZAC sequence fragment transforms to the time domain waveform that shape on the time domain grows into s 0, a 1, a 2..., a S-1, after the cyclic shift, can become sequence { a P+1, a P+2..., a S-1..., a 0, a 1..., a p, wherein p can be 0,1 ..., the integer between the s-1.
Under the position difference of the time of different sequence correspondences and situation that different time overlaps, the formation sequence group, and determine the sequence in the sequence set method can for:
In the embodiment of the present invention, the position difference of the time of the transmitted bandwidth of above-mentioned 4 1.25MHz, i.e. 4 kinds of different running time-frequency resource occupancy modes.For the 1.25MHz transmitted bandwidth, because the number of available subcarrier can be prime number 37, so the length of the CAZAC sequence of 37 available subcarrier correspondences in the 1.25MHz transmitted bandwidth can be the prime number of N=37.Can generate 36 sequence set, specifically generate the process of 36 sequence set, as the corresponding description in the above-mentioned execution mode one.Can comprise a CAZAC sequence in each sequence set.If the CAZAC sequence in the sequence set as basic sequence, then, is carried out cyclic shift with this basic sequence, and with the sequence after the cyclic shift still as the sequence in its corresponding basic sequence place sequence set, then can comprise a plurality of sequences in a sequence set.For example, a basic sequence is carried out 4 kinds of different cyclic shifts, obtains 4 sequences after the cyclic shift, with the sequence after these 4 cyclic shifts and basic sequence as the sequence in the same sequence set.At this moment, can comprise 5 sequences in a sequence set.
When embodiment of the present invention is not got rid of the situation of 4 identical sequences that the transmitted bandwidth of 4 1.25MHz adopts, promptly do not consider the different situation in position of the time of sequence during the sequence in determining sequence set.At this moment, in a sequence set 2 CAZAC sequences can be arranged.
After including the corresponding different sampling intervals of different sequences, extracting, have under the situation that the running time-frequency resource that obtains after the running time-frequency resource of same band and different the extraction overlaps, for example under situation as shown in Figure 3, the formation sequence group, and determine the sequence in the sequence set method can for:
Under environment shown in Figure 3, the running time-frequency resource occupancy mode of the sequence of system's support comprises following two kinds:
Mode 1, the running time-frequency resource of 10MHz bandwidth is divided into the running time-frequency resource of two 5MHz bandwidth.
Mode 2, obtain the running time-frequency resource of 5MHz bandwidth according to sampling the running time-frequency resource of sampling interval 2 in the 10MHz bandwidth.
Be example with the Zadoff-Chu sequence below, Zadoff-Chu sequence in the same sequence set is described.
Get N=151, r=k is cut into 150, generates the Zadoff-Chu sequence of 5MHz bandwidth correspondence;
Get N=151, r=4k is cut into 150, generates the 10MHz bandwidth samples Zadoff-Chu sequence of 2 correspondences at interval.
Top k is 1～150 natural number.Promptly, can generate 150 sequence set for the 10MHz bandwidth in 5MHz transmitted bandwidth and sampling interval 2.Square being directly proportional of the index of the Zadoff-Chu sequence in the different sampling intervals of same sequence set and the interval of sampling.
In the present embodiment, the sequence set that different k is corresponding different.In the sequence set two CAZAC sequences can be arranged, also can be again mode by cyclic shift generate more CAZAC sequence by these two CAZAC sequences.Under the identical situation of k, the sequence that cyclic shift obtains can be regarded the sequence in the sequence set that this value is k as.CAZAC sequence after the cyclic shift can be arranged in same sequence set with basic sequence.The sequence that cyclic shift obtains also can be arranged in different sequence set with its basic sequence.
In general, according to the CAZAC sequencing theory, one long is the CAZAC sequence a of M i, i=0 ..., M-1, if the sampling interval is s, and M and s are coprime, then a (si) modM, i=0,1 ..., M-1 is a CAZAC sequence.To sampling interval s 1, s 2, a (s1i) modM, i=0,1 ..., M-1 and a (s2i) modM, i=0,1 ..., these two sequences of M-1 are two sequences in the sampling interval of the corresponding different running time-frequency resource of the difference in the sequence set.Top Zadoff-Chu sequence is one of them example.
At a time, the running time-frequency resource occupancy mode of the sequence of system's support has two kinds or more kinds of, for example, the running time-frequency resource occupancy mode of sequence sampling interval of being respectively the subcarrier that takies the 1.25MHz bandwidth shown in Fig. 2 and Fig. 3, taking the subcarrier of 5M bandwidth and taking the 10M bandwidth is 2 subcarriers that obtain.At this moment, giving each cell allocation sequence set, the value condition of index r is as follows:
Running time-frequency resource occupancy mode for sequence is the subcarrier that takies the 1.25MHz bandwidth, and N=37 can get r=25k; Running time-frequency resource occupancy mode for sequence is the subcarrier that takies the 5M bandwidth, and N=151 can get r=102k; In the same sampling interval, the index of the sequence of different bandwidth is that the sequence of linear relationship as above belongs to same sequence set.
For the running time-frequency resource occupancy mode of sequence is to take that the sampling interval is 2 subcarriers that obtain in the 10M bandwidth, N=151.Then length be 37 sampling interval be 1 and length be sampling interval of 151 to be 2 sequence, if belong to same group, then need to satisfy, to N=37, sequence, r=25k, to the N=151 sampling interval be 2 sequence, can get r=4102k.Be the index r of different running time-frequency resource occupancy mode correspondences i, r jSatisfy, r i · g j 2 r j · g i 2 = b i b j , Middle g i, g jRepresent in two kinds of resource occupation modes every separately g on frequency iAnd g jIndividual subcarrier extracts a subcarrier, b j/ b iThe value of representing the ratio decision of actual occupied bandwidth under two kinds of resource occupation modes can be specially the value of ratio decision of the subcarrier number of carrying sequence usually.
Pass through simulating, verifying, when the running time-frequency resource of the sequence correspondence in the different sequence set of embodiment of the present invention design overlaps, after on the running time-frequency resource that sequence modulation is corresponding to it, correlation between the sequence after the modulation is little, and the correlation between the sequence in the same sequence set can be bigger.Therefore, concerning the planning of cellular system, different sub-districts can guarantee that the interference little, inter-cell signal of the correlation of sequence is little between the different districts under the situation of distributing different sequence set.
For same sub-district, embodiment of the present invention can be distributed one or more sequence set for it.For the sequence set number of cell allocation can be determined according to the actual conditions of network.
Fig. 5 has verified the correlation of sequence between two sequence set.(37,1) among Fig. 5, (37,2) etc. are that (N, r), expression length is r sequence in the sequence of N.As can be seen from Figure 5 N is 37 sequence, and its autocorrelation value (except 37 correlation was arranged in zero displacement place, other displacement place correlation all was 0) and cross correlation value are all very low, and (correlation in any displacement place all is
Figure A20071011153300172
).And being a part of fragment in 37 the sequence and N, N is the correlation of a part of fragment in 151 the sequence, relevant with the r value of definite sequence.Can see and work as b 1=25, b 2=102, during k=3, N is that the sequence of 37 r=1 and N are that the sequence of 151 r=4 just has higher cross correlation value, maximum reaches about 28, because being actually, they belong to same group sequence, and with N be that the cross correlation value of sequence of 151 r=2 is just lower, greatly about about 11, because this sequence is actually the sequence that belongs in the k=-37 group.This correlation that sequence between different sequence set just has been described is lower.
Same, Fig. 6 has also verified the correlation of sequence between two sequence set.(151,1) among Fig. 6, (151,2) etc. are that (N, r), expression length is r sequence in the sequence of N.As can be seen from Figure 6 N is 151 sequence, and its autocorrelation value (except 151 correlation was arranged in zero displacement place, other displacement place correlation all was 0) and cross correlation value are all very low, and (correlation in any displacement place all is
Figure A20071011153300181
).And the correlation of N to be length in 151 the sequence be 75 fragment and the fragment of the back combination of sampling is relevant with the r value of definite sequence.Can see that N is that the sequence of 151 r=1 and N are that the sequence of 151 r=4 just has higher cross correlation value, can about 50 correlation peak appear two displacements place, and with N be that the cross correlation value of sequence of 151 r=2 is just lower, all be lower than in all displacements place
Figure A20071011153300182
This correlation that sequence between different sequence set just has been described is lower.
Specific embodiment two
Have transmitting of multiple different bandwidth in system, i.e. when the running time-frequency resource occupancy mode of the sequence of system's support was multiple different bandwidth, wherein two sequences in sequence set can be constructed by following method:
If a kind of running time-frequency resource occupancy mode, also has a kind of running time-frequency resource occupancy mode for taking N subcarrier for taking M subcarrier, so, can be a of M according to length 0, a 1..., a M-1, i.e. sequence a i, and length is the b of N 0, b 1..., b N-1, i.e. sequence b i, the structure M * long CAZAC sequence c of N i=a ImodMB ImodN, i=0,1 ..., MN-1, and sequence b i, c iBelong to same sequence set.
So, sequence b iCorresponding running time-frequency resource occupancy mode is for taking N subcarrier, sequence c iCorresponding running time-frequency resource occupancy mode is for taking M * N subcarrier.As M, when N is coprime, construct the sequence that obtains by the way and still satisfy the CAZAC characteristic.
For example, above-mentioned embodiment can be applied in as shown in Figure 2 the application scenarios: the corresponding length of the running time-frequency resource of the 1.25MHz bandwidth of a sub-district is 37 Zadoff-Chu sequence b i, and the Zadoff-Chu sequence of the running time-frequency resource correspondence of another sub-district is: by 37 long sequence b iWith 4 long Zadoff-Chu sequence a iThe Zadoff-Chu sequence of 148 length that construct.In actual applications, in order to mate the subcarrier number, also have some necessary sequence truncation or fillings.If same b is all used in two sub-districts iCorresponding sequence, when using the sequence in the same sequence set in other words, then the correlation between the sequence is bigger.If different b is used in two sub-districts iCorresponding sequence, when using the sequence of different sequence set in other words, then the correlation between the sequence is less.
Can prove for the Zadoff-Chu sequence: if M, N are coprime, two long is the Zadoff-Chu sequence of M and N, and the sequence that obtains by above-mentioned operation is the Zadoff-Chu sequence of MN for length.Prove as follows:
a m = exp [ - 2 π r 1 j · ( m ( m + M mod 2 ) / 2 ) M ]
b n = exp [ - 2 π r 2 j · ( n ( n + N mod 2 ) / 2 ) N ]
c i = a i mod M · b i mod N = exp [ - 2 πj · { r 1 m ( m + M mod 2 ) / 2 + r 2 n ( n + N mod 2 ) / 2 } MN ]
= exp [ - 2 πj · { N r 1 i ( i + M mod 2 ) / 2 + Mr 2 i ( i + N mod 2 ) / 2 } MN ]
= exp [ - 2 πj · { N r 1 i ( i + M mod 2 ) / 2 + Mr 2 i ( i + N mod 2 ) / 2 } MN ]
exp = [ - 2 πj · { ( N r 1 + Mr 2 ) i ( i + MN mod 2 ) / 2 } MN ]
Following formula is set up when M, N are odd number.
When one be one of even number when being odd number, differ under the situation of a cyclic shift and also set up, prove as follows.If M is an odd number, N is an even number, then
c i = exp [ - 2 πj · { N r 1 i ( i + M mod 2 ) / 2 + Mr 2 i ( i + N mod 2 ) / 2 } MN ]
= exp [ - 2 πj · { N r 1 i ( i + 1 ) ( M + 1 ) / 2 + Mr 2 i 2 / 2 } MN ]
= exp [ - 2 πj · { ( Nr 1 ( M + 1 ) i 2 / 2 ) + Nr 1 ( M + 1 ) i / 2 + Mr 2 i 2 / 2 } MN ] .
= exp [ - 2 πj · { ( Nr 1 ( M + 1 ) + Mr 2 ) i 2 ) / 2 } MN + 2 πj MN · Nr 1 ( N + 1 ) i / 2 ]
Because r 1Coprime with M, r 2Coprime with N, so Nr 1+ Mr 2And M * N is coprime, so this sequence is the Zadoff-Chu sequence.
In general, to length be M the Zadoff-Chu sequence and M = Π i p i k i , p iBe different prime factors, then this sequence is to be p by length i k iSeveral Zadoff-Chu sequences multiply each other and obtain.
Said method may be summarized to be: if three kinds of running time-frequency resource occupancy modes are arranged, the corresponding short sequence a of wherein a kind of running time-frequency resource occupancy mode, the corresponding short sequence b of another kind of running time-frequency resource occupancy mode, the corresponding long sequence c of a kind of running time-frequency resource occupancy mode of residue, and long sequence c is that the product of a short sequence a and the short sequence b of another one obtains, then during the sequence in determining sequence set, can adopt following method:
As the sequence in the same sequence set, the running time-frequency resource occupancy mode of the running time-frequency resource occupancy mode of long sequence c and weak point sequence b is different with long sequence c and short sequence b.
Can certainly be with long sequence c and short sequence a as the sequence in the same sequence set, the running time-frequency resource occupancy mode of the running time-frequency resource occupancy mode of long sequence c and weak point sequence a is different.
Specific embodiment three
Embodiment of the present invention can adopt the mode of randomization distribution or the mode of static programming to come to be the cell allocation sequence set when being the one or more sequence set of cell allocation.When the mode that adopts static programming is come for the cell allocation sequence set, for the sequence set of cell allocation is one or more time-independent, fixing sequence set.
Be that the implementation procedure of cell allocation sequence set describes to adopting the dynamic assignment mode below.
To a system that includes the 5MHz bandwidth, the frequency band of 5MHz bandwidth can be evenly divided into 25 elementary cells, can be 1 elementary cell and utilize the scheduling bandwidth of the signal that sequence modulation obtains, 2 elementary cells ..., perhaps 25 elementary cells.So but the combination of the elementary cell of corresponding these scheduling bandwidths needs the sequence of 25 kinds of different lengths in the system.If adopt l 1, l 2..., l 25The sequence length separately of 25 kinds of different lengths of expression, and each length l iUnder sequence number N iRepresent, so different length l iUnder sequence can be numbered r I, 0, r I, 1..., r I, Ni-1Need to comprise 25 sequences in the sequence set, these 25 sequence tables are shown { r i , k mod N i | i = 1,2 , . . . , 25 } , Wherein, k is the numbering of sequence set.
Embodiment of the present invention can utilize the specific pseudo-random fashion in sub-district to be defined as the sequence set of cell allocation.For example, can produce current pseudo random number according to information such as the numbering of the time slot at current sequence place, user ID, the numbering k of the corresponding sequence set of this pseudo random number, then, the frequency bandwidth that takies according to sequence decides the length of sequence, again with { r i , k mod N i | i = 1,2 , . . . , 25 } The numbering of the sequence under this length that obtains choosing.Promptly can form sequence set, then, be the cell allocation sequence set, promptly be defined as the sequence set of cell allocation by the mode of modulo operation.User terminal/network side can utilize the sequence in the sequence set to carry out signal processing, for example sends processing, receiving sequence signal of sequence etc.
Pseudo random number can utilize shift register to generate.Pseudo-random number sequence can be two element field or m sequence among the polynary territory GF (q) or the Gold sequence of using always etc.Different districts can adopt the initial condition of different shift registers, perhaps adopts the sequence of different displacements to generate pseudo-random number sequence.The k of shift register state (a 1, a 2..., a k) corresponding the numbering of sequence set, the shift register revolution once promptly whenever carries out a shifting function, and the state of shift register will change, thereby produces new state, the numbering that this new state can the corresponding next sequence set that adopts constantly.
Embodiment of the present invention also can utilize the specific pseudo-random fashion of cell set to carry out the distribution of sequence set.For example, can be with three sub-districts under the NodeB as a cell set, three sub-districts in this cell set can use same pseudo-random number sequence to be defined as the sequence set of its distribution.And different districts can need obtain the sequence of processing by the sequence different displacement on time-domain that will select, as obtains orthogonalized transmitting.Different districts also can need obtain the sequence of processing by selecting a sequence corresponding identical running time-frequency resource occupancy mode and a plurality of different sequences that correlation is low in a sequence set.
Utilizing the specific pseudo-random fashion of cell set to carry out the branch timing of sequence set, different cell set can be used different pseudo-random number sequence, as using different pseudo random sequences between the cell set of different N odeB.
Embodiment of the present invention can also adopt the specific pseudo-random fashion of user/channel to be this cell allocation sequence set, is the sequence set of the different user/channel allocation of this sub-district, is determined by the different pseudorandom mode that user/channel is specific.For example, utilize this pseudo random sequence to be defined as the sequence set of this cell allocation again by user ID decision pseudo random sequence.The user ID here can be a cell configuration.
It is this cell allocation sequence set that embodiment of the present invention can also adopt the user to organize specific pseudo-random fashion, and promptly one group of user adopts identical pseudo-random fashion to be defined as the sequence set of this cell allocation.When all users of a sub-district are divided into a user when organizing, then the user organizes specific pseudo-random fashion and just is equal to the specific pseudo-random fashion in sub-district.Especially, user for (MU-MIMO) pairing in the uplink multi-users multi-input multi-output system, can adopt identical pseudo-random fashion to be defined as the sequence set of this cell allocation, at this moment, the different sequences in the same sequence set can be used for distinguishing different users.
When the running time-frequency resource occupancy mode of a plurality of sequences correspondences in the sequence set, can adopt random fashion is user's assigned sequence.Specifically, can adopt the specific pseudo-random fashion of user to come assigned sequence for the user.For example, n sequence in the sequence set of running time-frequency resource occupancy mode i correspondence, according to index r from small to large order or the order of other certain regulation this n sequence is carried out 0,1,2 ..., the numbering of n-1.When carrying out series processing, the numbering that obtains according to modulo operation Xmodn is determined the sequence of running time-frequency resource occupancy mode i correspondence, and wherein X is a random number.Random number X can be user's particular random number, the time slot that random number X can take along with sequence or the change of subframe and change, and also random number X can be determined by user's identification information.The random number X here can be a random number sequence.The user's here identification information can be a network allocation.The sequence of the running time-frequency resource occupancy mode correspondence here can be the sequence that basic sequence and/or different cyclic shifts generate.Of equal value, embodiment of the present invention can be divided into a plurality of son groups with sequence set by the method for modulo operation, can adopt the specific pseudo-random fashion of user to select and distributes these sequences groups.
Embodiment of the present invention can be carried out the generation and the assigning process of sequence set to the running time-frequency resource occupancy mode of a part of sequence in the system, promptly can not carry out the generative process of sequence set to the running time-frequency resource occupancy mode of all sequences in the system.For example can be with the running time-frequency resource occupancy mode of sequence length according to sequence, be divided into a plurality of ranks, sequence in the set of the running time-frequency resource occupancy mode of other sequence of each grade in the corresponding certain-length scope can be carried out the generation and the allocation process of above-mentioned sequence set to the corresponding sequence of other set of each grade.
For the sequence set of the set correspondence of the different running time-frequency resource occupancy modes of sequence, can adopt respectively dynamically or the mode of static allocation comes to be the different sequence set of cell allocation.When the Radio Resource that takies when sequence is fewer, can adopt the dynamic assignment mode to come to be the cell allocation sequence set.Because the length of this time series is smaller, thereby the number of sequence set is fewer, adopts the dynamic assignment mode to come can satisfy the demand that sequence is used in the sub-district for the cell allocation sequence set.The dynamic assignment mode is that the implementation procedure of cell allocation sequence set is: in above-mentioned Zadoff-Chu sequence is in the embodiment of example, adopt wherein a certain pseudo-random fashion, when emission utilizes the signal of sequence modulation, select the numbering of a sequence set at random, and then utilize wherein a kind of mode in the foregoing description calculate in the child group of the respective length that belongs to same sequence set, sequence indicator is the sequence of r.
When the Radio Resource that takies when sequence is many, can adopt the static allocation mode to come to be the cell allocation sequence set.For example, in above-mentioned Zadoff-Chu sequence is in the embodiment of example, if the number N of sequence set can satisfy the demand that sequence is used in the sub-district, then N sequence set being distributed to different sub-districts uses, at this moment, for the sequence set of cell allocation does not need to change over time, and, also can satisfy the requirement of inter-cell signal interference equalization.
More excellent, can be divided into the Radio Resource that sequence takies two grades in the system, and difference tectonic sequence group.Grade is that the Radio Resource that takies of sequence is more, can adopt the static allocation mode to come to be the cell allocation sequence set at this grade; Another grade is that the Radio Resource that takies of sequence is less, can adopt the dynamic pseudo-random mode to come to be the cell allocation sequence set at this grade.For example, when the running time-frequency resource that sequence takies surpasses 144 subcarriers, usually the length of this sequence be the sequence more than or equal to 144, and the running time-frequency resource that takies at sequence can adopt the static allocation mode to come to be the cell allocation sequence set above the situation of 144 subcarriers; The running time-frequency resource that sequence takies is during less than 144 subcarriers, and the length of this sequence is the sequence less than 144 usually, takies the situation of running time-frequency resource less than 144 subcarriers at sequence, can adopt the dynamic pseudo-random mode to come to be the cell allocation sequence set.
In the respective embodiments described above, the sequence in formation sequence group, the tectonic sequence group is to realize according to rules such as the different running time-frequency resource occupancy modes of the sequence of supporting in the system and static state/dynamic assignment.The formation sequence group that the invention described above execution mode is described, the operation of the sequence in the tectonic sequence group can be at all sub-districts in the system.At this moment, the mode of the sequence in formation sequence group, the tectonic sequence group can be called the public burst mode in sub-district.But owing to can carry out the selection of sequence set according to the specific pseudo-random fashion of sub-district/user/channel when the sequence of select using, and sub-district/user/channel particular random number sequence is listed in saltus step can take place on the time slot of different CAZAC sequences, so some short sequences can be not always occurred simultaneously with the some long sequence of adjacent sub-district.Like this, from long time, it is more at random that the signal of minizone disturbs, thereby has avoided the signal of two minizones always to disturb stronger phenomenon.
Specific embodiment four
During a plurality of sequence in the corresponding sequence set of running time-frequency resource occupancy mode, can utilize sub-prescription formula formation sequence group.In this case, still can reduce the interference of inter-cell signal, describe with a concrete example below.
According to the sequence set of the different running time-frequency resource occupancy modes structure of sequence, for each running time-frequency resource occupancy mode, can correspondence not only sequence.For example, a running time-frequency resource occupancy mode can be to the cyclically shifted sequences on 6 time-domains that a sequence generation should be arranged, cyclically shifted sequences on these 6 time-domains can be distributed to 3 sub-districts under the base station, comprises 2 cyclically shifted sequences in the sequence set of each sub-district.Two cyclically shifted sequences of each sub-district can be distributed to different users or channel again.When time-frequency resource occupation mode is 1,2,3,4 .... wireless resource block is when (Radio rource Block is called for short RB), each RB has 12 subcarriers, the sequence length of then corresponding 1 RB can elect 11 as, and the length of the sequence of corresponding 2 RB can elect 23 as, and the length of the sequence of corresponding 3 RB can elect 37 or the like as.Length is that 11 different Zadoff-Chu sequence has 10, therefore 10 groups of sequences can be arranged.23 long Zadoff-Chu sequences have 22, and 37 long Zadoff-Chu sequences have 36.If be divided into 10 sequence set, it is 23 sequence that the sequence length of 2 RB of 2 correspondences then can be arranged in each group, and the sequence length of 3 RB of 3 correspondences can be arranged is 37 sequence.
When 23 long Zadoff-Chu sequences, 37 long Zadoff-Chu sequences are distributed to different sub-districts in groups and with different sequence set, need to guarantee that the signal-to-jamming ratio of different minizones is lower; When giving the different user of sub-district, need to guarantee that the interference ratio of different user-user signals is lower with a plurality of sequence allocation of the same running time-frequency resource correspondence in the sequence set.Adopt the mode of following tectonic sequence group and assigned sequence group, can guarantee that the correlation of the sequence between the different districts of a base station is low, the signal of minizone disturbs little.
The sequence of corresponding 1RB can have 12, can corresponding 12 sequence set.For a plurality of 1RB sequences of correspondence, adopt 12 the sequence set i of method construct that describe in the above-mentioned execution mode 1, k, k=1,2 ..., 11,12, make that the correlation of the sequence between the different sequence set is lower; The sequence of corresponding 2RB can have 22, can adopt 22 the sequence set i of method construct that describe in the above-mentioned execution mode 2, k, k=1,2 ..., 21,22, make that the correlation of the sequence between the different sequence set is lower.The sequence of corresponding 3RB can 36, can adopt 36 the sequence set i of method construct that describe in the above-mentioned execution mode 3, k, k=1,2 ..., 35,36, make that the correlation of the sequence between the different sequence set is lower.
Sequence set i from the running time-frequency resource correspondence more than the 1RB 1, k, k=p 1In, a sequence in the sequence of selected corresponding 1RB is as the sequence in the sequence set that will construct.Sequence set i from the running time-frequency resource correspondence more than the corresponding 1RB 1, k, k=p 2In, select the sequence of one or more corresponding 2RB, wherein p 2≠ p 1, as the sequence in the sequence set that will construct, the sequence of setting the corresponding 2RB that selects is positioned at sequence set i 2, k, k=q 1Sequence set i from the running time-frequency resource correspondence more than the corresponding 3RB 3, k, k=1,2 ..., select 3 sequence set i in 35,36 3, k, k=s 1, s 2, s 3, k=s wherein 1, s 2, s 3Selection require sequence in these sequence set, do not belong to sequence set i 1, p1, i 2, q1i 3, k,=s 1, s 2, s 3Interior sequence is as the sequence in the sequence set that will construct.Therefore, the sequence of the sequence set of present embodiment structure is made up of three sons, is respectively the sequence of 1RB correspondence, the sequence of 2RB correspondence, the sequence of the running time-frequency resource correspondence that 3RB is above.Select different k values, repeat the process of above-mentioned selection, construct a plurality of different sequence set.
For each sub-district in three sub-districts of a base station, one or more different cyclically shifted sequences of the sequence of the correspondence of the 1RB group in the sequence set of distribution configuration, one or more the different cyclically shifted sequences that distributes the correspondence of 2RB group, and a sequence set in 3 sequence set in the sequence of the above running time-frequency resource correspondence of the 3RB group.Utilize the mode of above-mentioned tectonic sequence group and assigned sequence group, can guarantee sequence relevant lower between the different districts of a base station, the signal of minizone disturbs less.
In general, sequence set can be made of a plurality of son groups, the division of son group is to determine according to the division of the running time-frequency resource occupancy mode of sequence, and comprises at least two kinds of running time-frequency resource occupancy modes in the set of the running time-frequency resource occupancy mode of at least one height group correspondence.Running time-frequency resource occupancy mode in the set of the running time-frequency resource occupancy mode that a son group in the sequence set is corresponding is: running time-frequency resource is more than or equal to a plurality of running time-frequency resource occupancy modes of certain fixed value.In the present embodiment, can be running time-frequency resource occupancy mode greater than 3 RB.Be length greater than the running time-frequency resource occupancy mode of 37 sequence correspondence.
The respective embodiments described above are to be that the CAZAC sequence that the Zadoff-Chu sequence generates is that example describes with the sequence in the sequence set, but, sequence in the embodiment of the present invention also can generate the CAZAC sequence by other sequence generating mode, for example, GCL sequence (Generalized Chirplike Sequence, broad sense concussion sequence) also can generate the CAZAC sequence.The GCL sequence is expressed as follows:
c(n)＝a(n)b(nmodm)，n＝0，1，...，N-1.
N=sm wherein 2, s and m are positive integers, and { b (n) } is " modulation " sequence, and its a m element all is that mould is 1 plural number, as the DFT sequence, b i ( n ) = W m in , i，n＝0，1，...，m-1。{ a (n) } is special " carrier wave " sequence, can be the Zadoff-Chu sequence.{ b (n) } can also be Hadamard (Hadarmard) sequence, and promptly { b (n) } is the row of hadamard matrix.The hadamard matrix H on m rank m, be the matrix on m * m rank, the entry of a matrix element is formed by 1 and-1, satisfies H mH m T=mI.Wherein I is a unit matrix, the transposition of T representing matrix.For m=2 n, n is a positive integer, then Hadamard sequences is:
b i ( n ) = ( - 1 ) Σ l = 0 m - 1 i l · n l , i，k＝0，1，...，m-1，
Wherein, i l, n lBe i, the l position bit of the binary representation of the m bit long of n.
Under the situation of the CAZAC sequence of utilizing the GCL sequence to generate, its formation sequence group and basic identical for the specific implementation process of describing in the specific implementation process of cell allocation sequence and the above-mentioned execution mode no longer describes in detail at this.
Also have a bit of particular note, the CAZAC sequence in the respective embodiments described above also can be the sequence that the CAZAC sequence is blocked generation, also the sequence that can generate for the fragment of utilizing the CAZAC sequence and CAZAC combined sequence.
Specific embodiment five
Above-mentioned method embodiment can realize that this system comprises by communication system shown in Figure 7:
Sequence allocation unit 701 is used to cell allocation to comprise the sequence set of a plurality of sequences, determines sequence in the described sequence set according to the running time-frequency resource occupancy mode of the sequence of system's support.The sequence set here, running time-frequency resource occupancy mode are like the description in the said method execution mode.
Sequence of cells determining unit 702 is used for determining spendable sequence set, for example determines spendable sequence set according to the information or the sequence set identification information of sub-district.Sequence of cells determining unit 702 can adopt the multiple mode of describing in the said method execution mode need to determine the sequence of generation, no longer repeat specification here.
Running time-frequency resource sequence determining unit 703 is used for according to the running time-frequency resource occupancy mode, determines the sequence that will generate in the sequence set of determining from sequence of cells determining unit 702.Running time-frequency resource sequence determining unit 703 can adopt the method for multiple definite sequence that need generate of describing in the said method execution mode need to determine the sequence of generation, no longer repeat specification here.
Sequence generating unit 704 is used to generate the sequence of being determined by running time-frequency resource sequence determining unit 703.
Processing unit 705, be used for the sequence that sequence generating unit 704 generates is sent on corresponding running time-frequency resource, perhaps the sequence that sequence generating unit 704 is generated is applied in the processing of the sequence that receives on the corresponding running time-frequency resource, for example recipient's related operation is concrete as the description in the above-mentioned method execution mode.
Comprise a kind of radio communication sequence allocation device in the said system, wherein, comprise sequence allocation unit 701, be used to the cell allocation sequence set, determine sequence in the described sequence set according to the running time-frequency resource mode of the carrying sequence of system's support.
Said system also comprises the series processing device in a kind of wireless communication system, is used for determining and carry out the processing of sequence that this device comprises: sequence of cells determining unit 702, running time-frequency resource sequence determining unit 703, sequence generating unit 704 and processing unit 705.
Protection scope of the present invention is as the criterion with the protection range of claims, and the various changes and the modification that do not break away from spirit and scope of the invention that those skilled in the art carries out the present invention are all within the protection range of claim of the present invention.

Claims (34)

1. sequence allocating method in the communication system is characterized in that described method comprises:
Running time-frequency resource occupancy mode according to the sequence of system's support generates the sequence set that comprises a plurality of sequences;
Be the described sequence set of cell allocation.
2. the method for claim 1 is characterized in that, the running time-frequency resource occupancy mode of described sequence comprises: described sequence takies different bandwidth or takies the running time-frequency resource at different extractions interval or take different time-frequency resource block position.
3. the method for claim 1 is characterized in that, the sequence in the described sequence set is normal amplitude zero an autocorrelation performance CAZAC sequence, or the sequence that is generated by the fragment of CAZAC sequence and/or CAZAC sequence.
4. method as claimed in claim 3 is characterized in that, the CAZAC sequence in the described sequence set generates by pricking doffer-first Zadoff-Chu sequence, and described Zadoff-Chu sequence meets following generation formula:
a r ( n ) = W N n ( n + N mod 2 ) / 2 + qn , n = 0,1 , . . . , N - 1
a r(n) expression is with the sequence of index r generation, and n represents n unit of sequence, and N represents the length of sequence, wherein W N=exp (j2 π r/N), r is the number relatively prime with N, q is an integer arbitrarily.
5. method as claimed in claim 3 is characterized in that, the step of described formation sequence group comprises:
The running time-frequency resource that takies when two sequences is to be spaced apart s 1And s 2When sampling running time-frequency resource that obtain, that have same band, then to being spaced apart s by the pairing sequence of sampling running time-frequency resource 1And s 2Sampling, two sequence a that described sampling is obtained (si) modM, i=0,1 ..., M-1, s=s 1, s 2As the sequence in the sequence set.
6. method as claimed in claim 3 is characterized in that, the step of described formation sequence group:
If being the products of a short sequence a and the short sequence b of another one, the three kinds of corresponding respectively weak point sequence of running time-frequency resource occupancy mode a, short sequence b and long sequence c and long sequence c obtain, then with described long sequence c and two sequences of one of them short sequence as the running time-frequency resource of corresponding different bandwidth in the sequence set.
7. method as claimed in claim 4 is characterized in that, the step of described formation sequence group comprises:
The running time-frequency resource that takies when at least two sequences is when carrying out different interval sampling running time-frequency resource that obtain, that have same band, then under the index and square situation about being directly proportional in described sampling interval of described two sequences, with described two sequences as the sequence in the sequence set.
8. method as claimed in claim 4 is characterized in that, the step of described formation sequence group comprises:
When two different sequences take the running time-frequency resource of different bandwidth, will be according to index r i=b iK+ δ i, i=1,2 two of generating take the sequence of running time-frequency resource of different bandwidth as the sequence in the sequence set; Wherein, represent same sequence set when k is identical, b i, δ iRunning time-frequency resource by the different bandwidth of CU is determined, i=1, and 2 distinguish different running time-frequency resources.
9. method as claimed in claim 8 is characterized in that, according to formula b 1N 2-b 2N 1=1 determines b 1, b 2, wherein, N 1, N 2The length of expression sequence.
10. as the described method of arbitrary claim in the claim 1 to 9, it is characterized in that the step of described assigned sequence group comprises:
In the static allocation mode is the cell allocation sequence set, is the cell allocation sequence set with the pseudorandom method of salary distribution perhaps.
11. method as claimed in claim 10 is characterized in that, described is that the step of cell allocation sequence set comprises in pseudorandom mode:
Organizing specific pseudo-random fashion with specific pseudo-random fashion of the specific pseudo-random fashion of the specific pseudo-random fashion in sub-district or cell set or user or user is the cell allocation sequence set.
12., it is characterized in that the step of described assigned sequence group comprises according to the described method of arbitrary claim in the claim 1 to 9:
To the partial sequence group, adopting the static allocation mode is the cell allocation sequence set, at the remainder sequence set, is the cell allocation sequence set with the pseudorandom method of salary distribution.
13., it is characterized in that described method also comprises according to the described method of arbitrary claim in the claim 1 to 9:
When in the corresponding sequence set of running time-frequency resource occupancy mode during a plurality of sequence, adopt the specific or user of user to organize specific pseudorandom mode and select the sequence in the sequence set and distribute to user/channel.
14. method according to claim 13 is characterized in that, a plurality of sequences of described running time-frequency resource occupancy mode correspondence comprise the cyclically shifted sequences of basic sequence and/or different shift amounts.
15. according to the described method of arbitrary claim in the claim 1 to 9, it is characterized in that, described sequence set comprises a plurality of sequence groups, the set of a corresponding running time-frequency resource occupancy mode of sequence group, and comprise at least two kinds of running time-frequency resource occupancy modes in the set of at least one running time-frequency resource occupancy mode.
16. method according to claim 15 is characterized in that, the set of the running time-frequency resource occupancy mode that one of them the son group in the described sequence set is corresponding comprises: running time-frequency resource is more than or equal to a plurality of running time-frequency resource occupancy modes of fixed value.
17. according to the described method of arbitrary claim in the claim 1 to 9, it is characterized in that, described method also comprises: when n sequence of a kind of running time-frequency resource occupancy mode correspondence, the sequence in the described sequence set determines that according to modulo operation Xmodn described X is a predetermined value.
18. the series processing method in the communication system is characterized in that described method comprises:
Determine to distribute to the sequence set of sub-district, described sequence set generates according to the running time-frequency resource occupancy mode of the sequence of system's support and comprises a plurality of sequences;
According to the running time-frequency resource mode that sequence takies, in the sequence set of described sub-district, determine and formation sequence;
Sequence to described generation is carried out series processing.
19. method as claimed in claim 18 is characterized in that, the running time-frequency resource occupancy mode of described sequence comprises: described sequence takies different bandwidth or takies the running time-frequency resource at different extractions interval or take different time-frequency resource block position.
20. method as claimed in claim 18 is characterized in that, the described step of determining to distribute to the sequence set of this sub-district comprises:
The sequence set of determining to distribute to the sub-district according to the information and/or the sequence set identification information of sub-district.
21. method as claimed in claim 18 is characterized in that, the sequence in the described sequence set is normal amplitude zero an autocorrelation performance CAZAC sequence, or the sequence that is generated by the fragment of CAZAC sequence and/or CAZAC sequence.
22. method as claimed in claim 21 is characterized in that, the CAZAC sequence in the described sequence set generates by pricking doffer-first Zadoff-Chu sequence, and described Zadoff-Chu sequence meets following generation formula:
a r ( n ) = W N n ( n + N mod 2 ) / 2 + qn , n = 0,1 , . . . , N - 1
a r(n) expression is with the sequence of index r generation, and n represents n unit of sequence, and N represents the length of sequence, wherein W N=exp (j2 π r/N), r is the number relatively prime with N, q is an integer arbitrarily.
23. method as claimed in claim 21 is characterized in that, described step definite and formation sequence comprises:
The running time-frequency resource that takies when sequence is the time that is spaced apart that the sampling of s obtains, and determines that then the described sequence that needs to generate is: to described 1 the pairing sequence a of resource that is sampled to i, i=0 ..., M-1 is spaced apart the sequence a that the sampling of s obtains (si) modM, i=0,1 ..., M-1.
24. method as claimed in claim 21 is characterized in that, described step definite and formation sequence comprises:
Obtain if the three kinds of corresponding respectively short sequence a of running time-frequency resource occupancy mode, short sequence b and long sequence c and long sequence c are the products of a short sequence a and the short sequence b of another one, then will grow the sequence that sequence c or one of them short sequence generate as needs.
25. method as claimed in claim 22 is characterized in that, described step definite and formation sequence comprises:
The running time-frequency resource that takies when at least two sequences is when carrying out different interval sampling running time-frequency resource that obtain, that have same band, under the index and square situation about being directly proportional in described sampling interval of described two sequences, with the sequence of one of them sequence in described two sequences as the needs generation.
26. method as claimed in claim 22 is characterized in that, described step definite and formation sequence comprises:
The bandwidth running time-frequency resource that takies when bandwidth running time-frequency resource that sequence takies and other sequence in the described sequence set not simultaneously, according to index r i=b iK+ δ i, i=1,2 formation sequences, wherein: belong to same sequence set when k is identical, b i, δ iRunning time-frequency resource by the different bandwidth of CU is determined, i=1, and 2 distinguish different running time-frequency resources.
27. method as claimed in claim 18 is characterized in that, described series processing is that sequential reception processing or sequence emission are handled.
28. a radio communication device is used for processing signals, it is characterized in that, described device comprises:
The sequence of cells determining unit is used to determine to distribute to the sequence set of sub-district;
Running time-frequency resource sequence determining unit, the running time-frequency resource mode that the sequence that is used for handling as required takies is determined the sequence that needs generate in described sequence set;
Sequence generating unit is used for determining the sequence formation sequence that needs generate according to described running time-frequency resource sequence; With
Processing unit is used to utilize the sequence of described generation to carry out series processing.
29. device as claimed in claim 28 is characterized in that, described sequence of cells determining unit comprises: the module of determining to distribute to the sequence set of sub-district according to the information of sub-district and/or sequence set identification information.
30. device as claimed in claim 28, it is characterized in that, described running time-frequency resource sequence determining unit comprises: be used for when running time-frequency resource that sequence takies be spaced apart that the sampling of s obtains the time, determine that then the described sequence that needs to generate is: to described 1 the pairing sequence a of resource that is sampled to i, i=0 ..., M-1 is spaced apart the sequence a that the sampling of s obtains (si) modM, i=0,1 ..., the module of M-1.
31. device as claimed in claim 28, it is characterized in that, described running time-frequency resource sequence determining unit comprises: be used for when running time-frequency resource that at least two sequences take be when carrying out different interval sampling running time-frequency resource that obtain, that have same band, under the index and square situation about being directly proportional in described sampling interval of described two sequences, with the module of one of them sequence in described two sequences as the sequence of needs generation.
32. device as claimed in claim 28 is characterized in that, described running time-frequency resource sequence determining unit comprises: be used for bandwidth running time-frequency resource that the bandwidth running time-frequency resource that takies when sequence and other sequence take not simultaneously, definite need be according to index r i=b iK+ δ i, i=1, the module of 2 formation sequences; Wherein: belong to same group when k is identical, b i, δ iDifferent running time-frequency resources by CU are determined, i=1, and 2 distinguish different running time-frequency resources.
33. device as claimed in claim 28, it is characterized in that, described running time-frequency resource sequence determining unit comprises: be used for determining the described module that needs the sequence of generation from long sequence c and one of them short sequence when the product that the corresponding short respectively sequence a of three kinds of running time-frequency resource occupancy modes, short sequence b and long sequence c and long sequence c are a short sequence a and the short sequence b of another one obtains.
34. as the described device of arbitrary claim in the claim 28 to 33, it is characterized in that described processing unit comprises: be used to utilize the sequence of described generation to carry out the module of signal transmission processing or be used to utilize the sequence of described generation to carry out the module that signal receives processing.
CNA2007101115337A 2006-09-30 2007-06-19 Sequence distribution method, sequence processing method and device in communication system Pending CN101174857A (en)

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CNA2007101115337A CN101174857A (en) 2006-09-30 2007-06-19 Sequence distribution method, sequence processing method and device in communication system
PT07816965T PT2068455E (en) 2006-09-30 2007-09-25 Sequence distributing method, sequence processing method and apparatus in communication system
CN200780001879XA CN101366193B (en) 2006-09-30 2007-09-25 Sequence distributing method, sequence processing method and apparatus in communication system
SI200730684T SI2068455T1 (en) 2006-09-30 2007-09-25 Sequence distributing method, sequence processing method and apparatus in communication system
EP19161785.1A EP3585018A1 (en) 2006-09-30 2007-09-25 Sequence distributing method, sequence processing method and apparatus in communication system
PT110040672T PT2360849E (en) 2006-09-30 2007-09-25 Method and apparatus for sequence distribution and processing in a communication system
CN202010650098.0A CN111884781B (en) 2006-09-30 2007-09-25 Sequence allocation method, sequence processing method and device in communication system
PL07816965T PL2068455T3 (en) 2006-09-30 2007-09-25 Sequence distributing method, sequence processing method and apparatus in communication system
KR1020097008639A KR101074884B1 (en) 2006-09-30 2007-09-25 Method and apparatus for sequence distributing and sequence processing in communication system
JP2009529504A JP4995914B2 (en) 2006-09-30 2007-09-25 Method and apparatus for sequence distribution and processing in a communication system
EP11004069.8A EP2360851B1 (en) 2006-09-30 2007-09-25 Method and apparatus for sequence distribution and processing in a communication system
EP11004068.0A EP2360850B1 (en) 2006-09-30 2007-09-25 Method and apparatus for sequence distribution and processing in a communication system
AU2007308605A AU2007308605B2 (en) 2006-09-30 2007-09-25 Sequence distributing method, sequence processing method and apparatus in communication system
EP07816965A EP2068455B1 (en) 2006-09-30 2007-09-25 Sequence distributing method, sequence processing method and apparatus in communication system
EP11004067.2A EP2360849B1 (en) 2006-09-30 2007-09-25 Method and apparatus for sequence distribution and processing in a communication system
DK07816965.3T DK2068455T3 (en) 2006-09-30 2007-09-25 Sequence distribution method, sequence processing method and apparatus in communication system
AT07816965T ATE510360T1 (en) 2006-09-30 2007-09-25 SEQUENCE DISTRIBUTION METHOD, SEQUENCE PROCESSING METHOD AND APPARATUS IN A COMMUNICATIONS SYSTEM
CN2010102306526A CN101924598B (en) 2006-09-30 2007-09-25 Sequence distribution method, sequence processing method and device in communication system
CN201210516511.XA CN102983957B (en) 2006-09-30 2007-09-25 Sequence allocating method, series processing method and device in communication system
PCT/CN2007/070774 WO2008049358A1 (en) 2006-09-30 2007-09-25 Sequence distributing method, sequence processing method and apparatus in communication system
CN201710610142.3A CN107395314B (en) 2006-09-30 2007-09-25 Sequence generation method, signal transmission and reception method and device in communication system
PL11004068T PL2360850T3 (en) 2006-09-30 2007-09-25 Method and apparatus for sequence distribution and processing in a communication system
US12/413,105 US9294245B2 (en) 2006-09-30 2009-03-27 Method and apparatus for sequence distributing and sequence processing in communication system
US12/982,655 US7983237B2 (en) 2006-09-30 2010-12-30 Method and apparatus for sequence distributing and sequence processing in communication system
CY20111100774T CY1111761T1 (en) 2006-09-30 2011-08-10 Sequence Distribution Method, Sequence Processing Method, and Communications Device
JP2012108117A JP5647177B2 (en) 2006-09-30 2012-05-10 Method and apparatus for sequence distribution and processing in a communication system
JP2014225848A JP6044034B2 (en) 2006-09-30 2014-11-06 Method and apparatus for sequence distribution and processing in a communication system
US15/045,270 US10305661B2 (en) 2006-09-30 2016-02-17 Method and apparatus for sequence distributing and sequence processing in communication system
JP2016177523A JP6548332B2 (en) 2006-09-30 2016-09-12 Method and apparatus for sequence distribution and processing in a communication system
US16/419,008 US10764011B2 (en) 2006-09-30 2019-05-22 Method and apparatus for sequence distributing and sequence processing in communication system
US17/006,790 US11811697B2 (en) 2006-09-30 2020-08-29 Method and apparatus for sequence distributing and sequence processing in communication system
US18/186,446 US20230299927A1 (en) 2006-09-30 2023-03-20 Method and apparatus for sequence distributing and sequence processing in communication system

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Cited By (7)

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CN102487534A (en) * 2010-12-03 2012-06-06 中国移动通信集团公司 Interference control method and device
CN101753286B (en) * 2008-12-18 2016-03-09 华为技术有限公司 Transmission method, device and system
CN109587092A (en) * 2017-09-29 2019-04-05 华为技术有限公司 Signal processing method and device based on sequence
CN110162573A (en) * 2019-05-05 2019-08-23 中国银行股份有限公司 A kind of distribution sequence generating method, apparatus and system
CN112532368A (en) * 2017-11-16 2021-03-19 华为技术有限公司 Sequence-based signal processing method and signal processing device
CN114270762A (en) * 2019-08-14 2022-04-01 高通股份有限公司 Group hopping enhancement of base sequences
CN115312121A (en) * 2022-09-29 2022-11-08 北京齐碳科技有限公司 Target gene locus detection method, apparatus, medium, and program product

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101753286B (en) * 2008-12-18 2016-03-09 华为技术有限公司 Transmission method, device and system
CN102487534A (en) * 2010-12-03 2012-06-06 中国移动通信集团公司 Interference control method and device
CN109587092A (en) * 2017-09-29 2019-04-05 华为技术有限公司 Signal processing method and device based on sequence
US11252003B2 (en) 2017-09-29 2022-02-15 Huawei Technologies Co., Ltd. Sequence-based signal processing method and apparatus
CN109587092B (en) * 2017-09-29 2021-12-03 华为技术有限公司 Signal processing method and device based on sequence
CN112532368B (en) * 2017-11-16 2021-08-20 华为技术有限公司 Sequence-based signal processing method and signal processing device
US11177992B2 (en) 2017-11-16 2021-11-16 Huawei Technologies Co., Ltd. Sequence-based signal processing method and signal processing apparatus
CN112532368A (en) * 2017-11-16 2021-03-19 华为技术有限公司 Sequence-based signal processing method and signal processing device
US11606238B2 (en) 2017-11-16 2023-03-14 Huawei Technologies Co., Ltd. Sequence-based signal processing method and signal processing apparatus
CN110162573B (en) * 2019-05-05 2021-04-30 中国银行股份有限公司 Distributed sequence generation method, device and system
CN110162573A (en) * 2019-05-05 2019-08-23 中国银行股份有限公司 A kind of distribution sequence generating method, apparatus and system
CN114270762A (en) * 2019-08-14 2022-04-01 高通股份有限公司 Group hopping enhancement of base sequences
CN115312121A (en) * 2022-09-29 2022-11-08 北京齐碳科技有限公司 Target gene locus detection method, apparatus, medium, and program product
CN115312121B (en) * 2022-09-29 2023-03-24 北京齐碳科技有限公司 Target gene locus detection method, device, equipment and computer storage medium

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