CN103384231B - A kind of information transmission, the generation of random access sequence, method of reseptance and device - Google Patents

A kind of information transmission, the generation of random access sequence, method of reseptance and device Download PDF

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CN103384231B
CN103384231B CN201210134633.2A CN201210134633A CN103384231B CN 103384231 B CN103384231 B CN 103384231B CN 201210134633 A CN201210134633 A CN 201210134633A CN 103384231 B CN103384231 B CN 103384231B
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sequence
random access
access sequence
maxtdidx
maxfoidx
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CN103384231A (en
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刘锟
张晓丹
鲁照华
罗薇
李卫敏
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ZTE Corp
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ZTE Corp
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Abstract

The invention discloses a kind of transmission of information, the generation of random access sequence, method of reseptance and device, including：First node sends the random access sequence configuration information for generating random access sequence to section point, and the random access sequence configuration information comprises at least：The length N of random access sequenceZC, source sequence Xu(n) index u, maximum frequency deviation index MaxFOIdx and maximum delay interval index MaxTDIdx.The present invention can ensure that the terminal of high-speed motion can be successfully accessed system, substantially reduce the access delay of terminal access system, and it can ensure that receiving terminal can be efficiently completed random access sequence detection, reduce the time delay of terminal access system, improve the performance of user's access.

Description

A kind of information transmission, the generation of random access sequence, method of reseptance and device
Technical field
The present invention relates to the communications field, more particularly to a kind of transmission of information, the generation of random access sequence, method of reseptance and Device.
Background technology
With the development of mobile Internet and the popularization of smart mobile phone, mobile data traffic demand is skyrocketed through, quick to increase Long data service proposes severe challenge to the transmittability of mobile communications network.Predicted according to authoritative institution, it is following 10 years Interior (2011-2020), mobile data services amount will also double every year, will increase by 1,000 times within 10 years.With mobile Internet Accessing user's quantity is continuously increased, and the mobile data services demand of user can be also continuously increased, the type of mobile data services Also can constantly update therewith.And different mobile data services need service quality (QoS, the Quality of that operator provides Service also difference) is ensured, such as different transmission qualities ensures, different cut-in qualities ensures etc..Wherein, how to ensure The problem of cut-in quality of user is then firstly the need of considering, the especially ever-increasing period in accessing user's quantity, such as What effectively reduces the access delay of user, then is particularly important.Therefore, RACH (Physical Random Access Channel, PRACH) design be always the problem paid close attention to of each main normal structure.Wherein, exist The selection of the random access sequence sent on PRACH directly influences the performance of user's access, is the design of RACH In particularly important link.
The design of random access sequence will not only consider the support for static or microinching terminal, it is also necessary to ensure high The terminal of speed motion can be successfully accessed system.In addition, the access delay of terminal access system is also in design Stochastic accessing sequence The problem of needing to consider during row, the design of random access sequence need also exist for ensureing that receiving terminal can be efficiently completed Stochastic accessing Sequence Detection, reduce the time delay of terminal access system.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of transmission of information, the generation of random access sequence, method of reseptance And device, it would be preferable to support the user of high-speed mobile, reduce the access delay of user.
In order to solve the above technical problems, a kind of method for sending information of the present invention, including：
First node sends the random access sequence configuration information for generating random access sequence to section point, described Random access sequence configuration information comprises at least：The length N of random access sequenceZC, source sequence Xu(n) index u, maximum frequency deviation Index MaxFOIdx and maximum delay interval index MaxTDIdx.
Further, a kind of generation method of the random access sequence based on above- mentioned information sending method, including：
The section point generates random access sequence according to the random access sequence configuration information.
Further, random access sequence is generated according to random access sequence configuration information, including：
The section point according toThe random access sequence is generated, wherein, XU, v(k) it is random access sequence, k=0,1 ... Nzc- 1, Xu(n) it is source sequence corresponding to u,For cyclic shift length.
Further, in (2*Tu*MaxTDIi+Tu) ＜=NzcAnd maximum frequency deviation MaxFOiIt is described when=0Or Wherein, TuTo meet (u*Tu)modNzc=1 minimum positive integer；MaxTDIiFor MaxTDIdxiCorresponding maximum delay interval, MaxTDIdxiFor MaxTDIdx value, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiFor MaxFOIdx Value,
In (2*Tu*MaxTDIi+Tu) ＞ NzcAnd maximum frequency deviation MaxFOiIt is described when=0Or OrWherein, v=0,1,2 ..., dmin- 1, dmin=Min_distance { mod (Tu* j, Nzc), Nzc- 1 } j ∈ [0,2* MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector；
And maximum frequency deviation MaxFOiWhen ≠ 0,OrWherein,
And maximum frequency deviation MaxFOiWhen ≠ 0,OrOrWherein,V=0,1,2 ..., dmin- 1,j ∈ [0,2*MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector.
Further, in (2*Tu*MaxTDIi+ 1) ＜=NzcAnd maximum frequency deviation MaxFOiWhen=0, Wherein, TuTo meet (u*Tu)modNzc=1 minimum positive integer；MaxTDIiFor MaxTDIdxiCorresponding maximum delay interval, MaxTDIdxiFor MaxTDIdx value, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiFor MaxFOIdx Value,
In (2*Tu*MaxTDIi+ 1) ＞ NzcAnd maximum frequency deviation MaxFOiWhen=0,Or OrWherein, v=0,1,2 ..., dmin- 1, dmin=Min_distance { mod (Tu* j, Nzc), Nzc- 1 } j ∈ [0,2* MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector；
In (2*Tu*MaxTDIi+(2Δfos_up+ 1)) ＜=NzcAnd maximum frequency deviation MaxFOiWhen ≠ 0,, orWherein,
In (2*Tu*MaxTDIi+(2Δfos_up+ 1)) ＞ NzcAnd maximum frequency deviation MaxFOiWhen ≠ 0,OrOrWherein,V =0,1,2 ..., dmin- 1,Min_distance{} Represent to calculate distance most short between any two points in vector.
Further, a kind of sending method of the generation method based on any of the above-described random access sequence, including：
The section point carries out predefined operation to the random access sequence and obtains sending sequence, by the transmission sequence Row are sent to the first node on a random access channel.
Further, the predefined operation comprises at least subcarrier maps, inverse discrete Fourier transform and increase circulation Prefix operation.
Further, a kind of method of reseptance of random access sequence, including：
Receiving terminal receiving sequence R (n) on a random access channel, R (n) is generated into arrangement set to be detected；
The arrangement set to be detected and alternative sequence set are subjected to sequence related operation, obtain correlation peak set
To the correlation peak setSequence judgement is carried out, obtains obtaining random access sequenceParameter, according to The parameter obtains random access sequence
Further, it is described to include R (n) generations arrangement set to be detected：Selection is obtained on the time from sequence R (n) Continuous sequence A (n) initial time, the initial time are the system synchronization moment of RACH.
Further, to the correlation peak setSequence judgement is carried out, obtains obtaining random access sequence's Parameter, random access sequence is obtained according to the parameterIncluding：
In maximum frequency deviation MaxFOiWhen=0, from related peak setIn be met'sWherein, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiTaking for MaxFOIdx is indexed for maximum frequency deviation Value；
Calculate and meetE and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiCorresponding maximum delay interval, MaxTDIdxiTaking for MaxTDIdx is indexed for maximum delay interval Value,To meetMinimum positive integer,For cyclic shift length, NZCFor the length of random access sequence Degree；
It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondence TsFor the system time-domain signal sampling interval.
Further, existWhen, it is described OrWherein,
When, it is describedOrWherein, v=0,1,2 ..., dmin- 1,J ∈ [0,2* MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector；
When,OrWherein,
When,OrOr Wherein, v=0,1,2 ..., dmin- 1,J ∈ [0,2*MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector.
Further, in MaxFOiWhen ≠ 0, from related peak setIn be met 'sAnd meet'sWherein, MaxFOiFor MaxFOIdxiCorresponding maximum Frequency deviation, MaxFOIdxiMaxFOIdx value is indexed for maximum frequency deviation；
Calculate and meetAnd/or E and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiCorresponding maximum delay Interval, MaxTDIdxiMaxTDIdx value is indexed for maximum delay interval, To meetMinimum positive integer,For cyclic shift length, NZCFor the length of random access sequence；
It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondence TsFor the system time-domain signal sampling interval.
Further, existWhen,OrWherein,
When,OrOrWherein, v=0, 1,2 ..., dmin- 1,J ∈ [0,2*MaxTDIi], Min_ Distance { } represents to calculate distance most short between any two points in vector；
When,
OrWherein,
When,Or OrWherein, v=0,1,2 ..., dmin- 1,j∈ [0,2*MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector.
Further, random access sequence is being obtainedAfterwards, transmitting terminal and the reception of random access sequence are also calculated The amounts of frequency offset arrivedIt is described
Further, a kind of information transmitting apparatus, including：Dispensing unit and transmitting element, wherein：
The dispensing unit, it is described for being configured to generate the random access sequence configuration information of random access sequence Random access sequence configuration information comprises at least：The length N of random access sequenceZC, source sequence Xu(n) index u, maximum frequency deviation Index MaxFOIdx and maximum delay interval index MaxTDIdx；
The transmitting element, for sending the random access sequence configuration information.
Further, a kind of generating means of the random access sequence based on above- mentioned information dispensing device, including：Receive single Member and sequence generating unit, wherein：
The receiving unit, for receiving random access sequence configuration information；
The sequence generating unit, for generating random access sequence according to the random access sequence configuration information.
Further, the sequence generating unit, specifically for basisGeneration institute Random access sequence is stated, wherein, XU, v(k) it is random access sequence, k=0,1 ... Nzc- 1, Xu(n) it is source sequence corresponding to u,For cyclic shift length.
Further, a kind of reception device of random access sequence, including：Sequential reception unit, sequence to be detected generation Unit, sequence correlation unit and sequence decision unit, wherein：
The sequential reception unit, the receiving sequence R (n) on RACH, R (n) is sent to described to be checked Survey sequence generating unit；
The sequence generating unit to be detected, for R (n) to be generated into arrangement set to be detected；
The sequence correlation unit, for the arrangement set to be detected to be carried out to alternative sequence set, sequence is related to transport Calculate, obtain correlation peak set
The sequence decision unit, for the correlation peak setSequence judgement is carried out, acquisition is obtained and connects at random Enter sequenceParameter, random access sequence is obtained according to the parameter
Further, the sequence correlation unit, specifically for selecting to obtain sequence continuous in time from sequence R (n) A (n) initial time is arranged, the initial time is the system synchronization moment of RACH.
Further, the sequence decision unit, specifically in maximum frequency deviation MaxFOiWhen=0, from correlation peak collection CloseIn be met'sWherein, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiMaxFOIdx value is indexed for maximum frequency deviation；
Calculate and meetE and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiCorresponding maximum delay interval, MaxTDIdxiTaking for MaxTDIdx is indexed for maximum delay interval Value,To meetMinimum positive integer,For cyclic shift length, NZCFor the length of random access sequence Degree；
It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondence TsFor the system time-domain signal sampling interval.
Further, the sequence decision unit, specifically in MaxFOiWhen ≠ 0, from related peak setIn To satisfaction'sAnd meet'sWherein, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiTaking for MaxFOIdx is indexed for maximum frequency deviation Value；
Calculate and meetAnd/or E and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiIt is corresponding most Long time delay interval, MaxTDIdxiMaxTDIdx value is indexed for maximum delay interval, It is full FootMinimum positive integer,For cyclic shift length, NZCFor the length of random access sequence；
It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondence TsFor the system time-domain signal sampling interval.
In summary, the present invention can ensure that the terminal of high-speed motion can be successfully accessed system, substantially reduce terminal and connect Enter the access delay of system, and can ensure that receiving terminal can be efficiently completed random access sequence detection, reduce terminal and connect Enter the time delay of system, improve the performance of user's access.
Brief description of the drawings
Fig. 1 is the flow chart of the sending method of embodiment of the present invention random access sequence；
Fig. 2 is the flow chart of the method for reseptance of embodiment of the present invention random access sequence；
Fig. 3 is the flow chart of the sequence generation process to be detected of embodiment of the present invention；
Fig. 4 is the Organization Chart of the information transmitting apparatus of embodiment of the present invention；
Fig. 5 is the Organization Chart of the generating means of the random access sequence of embodiment of the present invention；
Fig. 6 is the Organization Chart of the reception device of the random access sequence of embodiment of the present invention.
Embodiment
The method for sending information of present embodiment, including：
First node sends random access sequence configuration information to section point, and random access sequence configuration information is used to give birth to Into random access sequence, random access sequence configuration information comprises at least：The length N of random access sequenceZC, source sequence Xu(n) Index u, maximum frequency deviation amount index MaxFOIdx and maximum delay interval index MaxTDIdx.
The generation method of the random access sequence of present embodiment, including：Section point configures according to random access sequence Information generates random access sequence.
Section point can be macro base station (MacroCell), micro-base station (MicroCell), femto base station (PicoCell), Home eNodeB (Femtocell), relaying (Relay) or terminal.
Random access sequence configuration information is illustrated respectively below.
(1) the length N of random access sequenceZCBy standard configuration or by system configuration.
(2) source sequence Xu(n) length is NZC, expression formula is as follows：
N=0,1 ... Nzc- 1, q are arbitrary integer, NzcFor odd number.
Source sequence Xu(n) index u is integer, and meets 1≤u≤Nzc-1。
(3) MaxFOIdx is described using N number of bit, and N is positive integer, and MaxFOIdx includes up to 2NIndividual value MaxFOIdxi, wherein 0≤i≤2N-1；
MaxFOIdxiWith maximum frequency deviation MaxFOiCorresponding relation by standard configuration or by system configuration；
MaxFOIdxiWith maximum frequency deviation MaxFOiCorresponding relation can be described by following formula：
MaxFOi=(a*f1+ b) * i, wherein, f1For frequency deviation quantized interval, i MaxFOIdxiCall number；
a、b、f1By standard configuration or by system configuration；f1Can be RACH subcarrier spacing fPRACH。
(4) MaxTDIdx is described using M bit, and M is positive integer, and MaxTDIdx includes up to 2MIndividual value MaxTDIdxi, wherein 0≤i≤2M-1；
MaxTDIdxiWith maximum delay interval MaxTDIiCorresponding relation by standard configuration or by system configuration；
MaxTDIiWith maximum delay amount MaxTDiCorresponding relation can be described by following formula：
MaxTDi=MaxTDIi*Ts, wherein, TsFor the system time-domain signal sampling interval.
The method that section point generates random access sequence according to random access sequence configuration information is to generate according to the following formula Random access sequence XU, v(k).(random access sequence generation method 1)
K=0,1 ... Nzc-1。
Equivalent to source sequence Xu(n) circulative shift operation is done, is connect at random Enter sequence,For cyclic shift length, for controlling Xu(n) digit of cyclic shift.
Value include following several situations：
Define TuTo meet (u*Tu)modNzc=1 minimum positive integer；
(a) as (2*Tu*MaxTDIi+Tu) ＜=NzcAnd maximum frequency deviation MaxFOiWhen=0,
Or
Wherein,Accorded with for downward floor operation；
(b) as (2*Tu*MaxTDIi+Tu) ＞ NzcAnd maximum frequency deviation MaxFOiWhen=0,
Or
Or
Wherein, v=0,1,2 ..., dmin- 1, dmin=Min_distance { mod (Tu* j, Nzc), Nzc- 1 } j ∈ [0,2* MaxTDIi], Min_distance { } is used for calculating distance most short between any two points in vector.
(C) defineWherein,For the operator that rounds up.
WhenAnd maximum frequency deviation MaxFOiWhen ≠ 0,OrWherein,To take downwards Whole operator,
(d) whenAnd maximum frequency deviation MaxFOiWhen ≠ 0,Or
Or
Wherein,Accorded with for downward floor operation, v=0,1,2 ..., dmin- 1,J ∈ [0,2*MaxTDIi], Min_distance { } is used for counting Calculate distance most short between any two points in vector.
The method that section point generates random access sequence according to random access sequence configuration information is to generate according to the following formula Random access sequence XU, v(k).(random access sequence generation method 2)
K=0,1 ... Nzc-1；
Define TuTo meet (u*Tu)modNzc=1 minimum positive integer；
Value include following several situations：
(A) as (2*Tu*MaxTDIi+ 1) ＜=NzcAnd maximum frequency deviation MaxFOiWhen=0,
Or
Wherein,Accorded with for downward floor operation,
(B) as (2*Tu*MaxTDIi+ 1) ＞ NzcAnd maximum frequency deviation MaxFOiWhen=0,
Or
Or
Wherein, v=0,1,2 ..., dmin- 1, dmin=Min_distance { mod (Tu* j, Nzc), Nzc-1}j∈ [0,2*MaxTDIi], Min_distance { } is used for calculating distance most short between any two points in vector.
(C) defineWherein,For the operator that rounds up.
As (2*Tu*MaxTDIi+(2Δfos_up+ 1)) ＜=NzcAnd maximum frequency deviation MaxFOiWhen ≠ 0,
Or
Wherein,Accorded with for downward floor operation,
(D) as (2*Tu*MaxTDIi+(2Δfos_up+ 1)) ＞ NzcAnd maximum frequency deviation MaxFOiWhen ≠ 0,
Or
Or
Wherein,Accorded with for downward floor operation, v=0,1,2 ..., dmin- 1,J ∈ [0,2*MaxTDIi], Min_distance { } is used for counting Calculate distance most short between any two points in vector.
The sending method of the random access sequence of present embodiment, including：
Section point is by xU, v(n) ultimately generated according to the flow shown in Fig. 1 and send sequence zU, v(n), including：Subcarrier reflects Penetrate, inverse discrete Fourier transform and increase cyclic prefix operation, and by zU, v(n) sent on PRACH channels.
Subcarrier maps are by sequence XU, v(k) N being mapped in N2 point subcarrier in frequency domainzcOn individual subcarrier, N2 value By system configuration or by standard configuration；Mapping relations are by system configuration or by standard configuration；
Cyclic prefix (Cyclic Prefix, CP) length NCP is by system configuration or by standard configuration；
IDFT is inverse discrete Fourier transform.
The method of reseptance of the random access sequence of present embodiment is illustrated in figure 2, including：
Step 201：Receiving terminal (first node) receives sequence R (n) on PRACH channels, and R (n) feedings is " to be checked Survey sequence generating unit ", obtain arrangement set D (n) to be detected；
The generating process of arrangement set to be detected is illustrated in figure 3, wherein, the length of D (n) sequences is NZC。
Receiving terminal can be macro base station (MacroCell), micro-base station (MicroCell), femto base station (PicoCell), family Front yard base station (Femtocell), relaying (Relay) or terminal.
Sequence generation process to be detected comprises at least：Detection time point selection operation, remove CP operations, DFT operations and carrier wave Extraction operation；
Detection time point selection operation refers to selection being obtained sequence A (n) continuous in time from sequence R (n) Begin the moment, wherein, the length of A (n) sequences is N2+NCP；
The initial time of A (n) sequences is the system synchronization moment T0 of PRACH channels；
CP operations are gone to refer to the operation for recovering B (n) sequences of N2 points from A (n) sequences, by standard configuration；
Carrier wave extraction operation refers to the operation that D (n) sequences of Nzc points are obtained from C (n) sequences of N2 points, is matched somebody with somebody by standard Put；
DFT operations are discrete Fourier transform.
Step 202：By arrangement set D (n) to be detected and alternative sequence set" sequence correlation unit " is sent into carry out Sequence related operation, obtain correlation peak set
Wherein, s isThe cyclic shift index of sequence, 0≤s≤Nzc-1；
Alternative sequence setIn comprise at least following sequence：
Source sequence xu(n) the arrangement set x of each bar cyclic shift underu((n+s)modNzc), wherein 0≤s≤Nzc- 1, i.e.,
Correlation peak setThe acquisition according to the following formula of middle element：
Step 203：By correlation peak setIt is sent into " sequence decision unit " and carries out sequence judgement, obtains Sequence Detection knot Fruit, comprising obtaining random access sequence in Sequence Detection resultParameter, obtained according to parameter
Work as MaxFOiWhen=0, the process of sequence judgement is carried out, including：
(1) from related peak setIn be met following formulaAnd it can obtain Wherein max () is the operation for taking greatest member in set；
(2) calculate and meet conditionE and v, be respectivelyWithWherein 0≤e≤ MaxTDIi,To meetMinimum positive integer,For cyclic shift length, NZCFor random access sequence Length；
(3) determine that the random access sequence sent isSequenceWhen corresponding to the original position in R (n) Quarter isTsFor the system time-domain signal sampling interval.
Value it is as follows：
When,OrWherein,
When,OrOr Wherein, v=0,1,2 ..., dmin- 1,J ∈ [0,2*MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector；
When,OrWherein,
When,OrOr Wherein, v=0,1,2 ..., dmin- 1,J ∈ [0,2*MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector.
Work as MaxFOiWhen ≠ 0, the process of sequence judgement is carried out, including：
(1) from related peak setIn be met following formulaAnd it can obtain
Wherein max () is the operation for taking greatest member in set；
(2) e and v for meeting following formula are calculated, is respectivelyWithWherein 0≤e≤MaxTDIi。
And/or
(3) determine that the random access sequence sent isSequenceWhen corresponding to the original position in R (n) Quarter is
Value it is as follows：
When,OrWherein,
When,OrOrWherein, v=0,1, 2 ..., dmin- 1,J ∈ [0,2*MaxTDIi], Min_ Distance { } represents to calculate distance most short between any two points in vector；
When,OrWherein,
When,Or
OrWherein, v= 0,1,2 ..., dmin- 1,J ∈ [0,2*MaxTDIi], Min_ Distance { } represents to calculate distance most short between any two points in vector.
After the random access sequence received, the transmission for sending random access sequence can also be calculated according to following formula End and the amounts of frequency offset of receiving terminal
Example 1：
In a wireless communication system, base station sends random access sequence configuration information by down channel, Wherein, random access sequence configuration information comprises at least：The length N of random access sequenceZC, generation random access sequence used Source sequence Xu(n) index u, maximum frequency deviation index MaxFOIdx and maximum delay interval index MaxTDIdx；
Base station can be macro base station (MacroCell), micro-base station (MicroCell), femto base station (PicoCell), family Base station (Femtocell) or relaying (Relay).
In the present embodiment, MaxFOIdx is described using 2 bits, and i=0, i.e. MaxFOIdx=00, i.e. MaxFOIdx0, A=1, b=0, f1=fPRACH, wherein, fPRACHIt is RACH subcarrier spacing.By the way that MaxFO is calculated0=0, i.e., The influence of frequency deviation is not considered.
MaxTDIdx is described using 4 bits, and i=1, i.e. MaxTDIdx=0001 are MaxTDIdx1, and MaxTDIdx1Corresponding maximum delay interval MaxTDI1=13, i.e. MaxTD1=MaxTDI1*Ts=13*Ts。
Terminal generates random access sequence X according to the random access sequence configuration information receivedU, v(k), specifically include following Step：
K=0,1 ... Nzc-1。
As (2*Tu*MaxTDIi+Tu) ＜=NzcAnd maximum frequency deviation MaxFO0When=0,
Or
Wherein,Accorded with for downward floor operation,
As (2*Tu*MaxTDI1+Tu) ＞ NzcAnd maximum frequency deviation MaxFO0When=0,
Or
Or
Wherein, v=0,1,2 ..., dmin- 1, dmin=Min_distance { mod (Tu* j, Nzc), Nzc- 1 } j ∈ [0,2* MaxTDI1], Min_distance { } is used for calculating distance most short between any two points in vector；
Terminal is by xU, v(k) sequence z is ultimately generated according to the flow shown in Fig. 1U, v(n), and by zU, v(n) believe in PRACH Sent on road.
Base station receives sequence R (n) on PRACH channels, and R (n) is sent into " sequence generating unit to be detected ", obtains Arrangement set D (n) to be detected, idiographic flow is as shown in Fig. 2 wherein, the length of D (n) sequences is NZC；
By arrangement set D (n) to be detected and alternative sequence setIt is sent into " sequence correlation unit ", obtains relevant peaks Value set
By correlation peak setIt is sent into " sequence decision unit ", output sequence testing result.
Work as MaxFO0When=0, from related peak setIn be met following formulaAnd then obtain Wherein max () is the operation for taking greatest member in set；
Calculating meets conditionE and v, be respectivelyWithWherein 0≤e≤ MaxTDI1。
It is determined that the random access sequence sent isSequenceAt the time of original position in R (n) corresponds to i.e. For
Embodiment 2：
In a wireless communication system, base station sends random access sequence configuration information by down channel, Wherein random access sequence configuration information comprises at least：The length N of random access sequencezc, used into raw random access sequence Source sequence Xu(n) index u, maximum frequency deviation index MaxFOIdx, maximum delay interval index MaxTDIdx.
Base station can be macro base station (MacroCell), micro-base station (MicroCell), femto base station (PicoCell), family Base station (Femtocell) or relaying (Relay).
In the present embodiment, MaxFOIdx is described using 2 bits, and i=0, i.e. MaxFOIdx=00, i.e. MaxFOIdx0, A=1, b=0, f1=fPRACH, wherein, fPRACHIt is RACH subcarrier spacing.By the way that MaxFO is calculated0=0, i.e., The influence of frequency deviation is not considered.
In the present embodiment, MaxTDIdx is described using 4 bits, and i=1, i.e. MaxTDIdx=0001 are MaxTDIdx1, and MaxTDIdx1Corresponding maximum delay interval MaxTDI1=13, i.e. MaxTD1=MaxTDI1*Ts=13* Ts。
Terminal generates random access sequence X according to the random access sequence configuration information receivedU, v(k), specifically include following Step：
As (2*Tu*MaxTDIi+ 1) ＜=NzcAnd maximum frequency deviation MaxFO0When=0,
Or
Wherein,Accorded with for downward floor operation,
As (2*Tu*MaxTDIi+ 1) ＞ NzcAnd maximum frequency deviation MaxFO0When=0,
Or
Or
Wherein, v=0,1,2 ..., dmin- 1,
dmin=Min_distance { mod (Tu* j, Nzc), Nzc- 1 } j ∈ [0,2*MaxTDI1], Min_distance { } is used To calculate distance most short between any two points in vector.
Terminal is by xU, v(n) sequence z is ultimately generated according to the flow shown in Fig. 1U, v(n), and by zU, v(n) believe in PRACH Sent on road.
Base station receives sequence R (n) on PRACH channels, and R (n) is sent into " sequence generating unit to be detected ", obtains Arrangement set D (n) to be detected, idiographic flow is as shown in Fig. 2 wherein, the length of D (n) sequences is NZC；
By arrangement set D (n) to be detected and alternative sequence setIt is sent into " sequence correlation unit ", obtains relevant peaks Value set
By correlation peak setIt is sent into " sequence decision unit ", output sequence testing result.
Work as MaxFO0When=0, from related peak setIn be met following formulaAnd then obtain
Wherein max () is the operation for taking greatest member in set；
Calculating meets conditionE and v, be respectivelyWithWherein 0≤e≤ MaxTDI1；
It is determined that the random access sequence sent isSequenceAt the time of original position in R (n) corresponds to i.e. For
Embodiment 3：
In a wireless communication system, base station sends out the configuration information of random access sequence by down channel Go, the configuration information of wherein random access sequence comprises at least：The length N of random access sequencezc, into raw random access sequence institute The source sequence X usedu(n) index u, maximum frequency deviation amount index MaxFOIdx, maximum delay interval index MaxTDIdx.
Base station can be macro base station (MacroCell), micro-base station (MicroCell), femto base station (PicoCell), family Base station (Femtocell) or relaying (Relay).
In the present embodiment, MaxFOIdx is described using 2 bits, and i=2, i.e. MaxFOIdx=10, i.e. MaxFOIdx2, A=1, b=0, f1=fPRACH, wherein, fPRACHIt is RACH subcarrier spacing.By the way that MaxFO is calculated2=2* fPRACH, i.e. maximum frequency deviation is 2 times of RACH subcarrier spacing.
In the present embodiment, MaxTDIdx is described using 4 bits, and i=1, i.e. MaxTDIdx=0001 are MaxTDIdx1, and MaxTDIdx1Corresponding maximum delay interval MaxTDI1=13, i.e. MaxTD1=MaxTDI1*Ts=13* Ts。
Terminal generates random access sequence X according to the configuration information of the random access sequence receivedU, v(k), specifically include with Lower step：
WhenAnd maximum frequency deviation MaxFO2When ≠ 0,
Or
Wherein,Accorded with for downward floor operation,
WhenAnd maximum frequency deviation MaxFO2When ≠ 0,
Or
Or
Wherein,Accorded with for downward floor operation, v=0,1,2 ..., dmin- 1, Min_distance { } is used for calculating distance most short between any two points in vector.
Terminal is by xU, v(n) sequence z is ultimately generated according to the flow shown in Fig. 1U, v(n), and by zU, v(n) believe in PRACH Sent on road.
Base station receives sequence R (n) on PRACH channels, and R (n) is sent into " sequence generating unit to be detected ", obtains Arrangement set D (n) to be detected, idiographic flow is as shown in Fig. 2 wherein, the length of D (n) sequences is NZC；
By arrangement set D (n) to be detected and alternative sequence setIt is sent into " sequence correlation unit ", obtains relevant peaks Value set
Work as MaxFO2When ≠ 0, from related peak setIn be met following formula
Wherein, max () is the operation for taking greatest member in set；
The e and v for meeting following formula are calculated, is respectivelyWithWherein 0≤e≤MaxTDI1。
And/or
It is determined that the random access sequence sent isSequenceAt the time of original position in R (n) corresponds to As
Embodiment 4：
In a wireless communication system, base station sends out the configuration information of random access sequence by down channel Go, the configuration information of wherein random access sequence comprises at least：The length N of random access sequencezc, into raw random access sequence institute The source sequence X usedu(n) index u, maximum frequency deviation amount index MaxFOIdx, maximum delay interval index MaxTDIdx.
In the present embodiment, MaxFOIdx is described using 2 bits, and i=2, i.e. MaxFOIdx=10, i.e. MaxFOIdx2, A=1, b=0, f1=fPRACH, wherein, fPRACHIt is RACH subcarrier spacing.By the way that MaxFO is calculated2=2* fPRACH, i.e. maximum frequency deviation is 2 times of RACH subcarrier spacing.
In the present embodiment, MaxTDIdx is described using 4 bits, and i=1, i.e. MaxTDIdx=0001 are MaxTDIdx1, and MaxTDIdx1Corresponding maximum delay interval MaxTDI1=13, i.e. MaxTD1=MaxTDI1*Ts=13* Ts。
Terminal generates random access sequence X according to the configuration information of the random access sequence receivedU, v(k), specifically include with Lower step：
As (2*Tu*MaxTDI1+(2Δfos_up+ 1)) ＜=Nzc, and maximum frequency deviation MaxFO2When ≠ 0,
Or
Wherein,Accorded with for downward floor operation,
As (2*Tu*MaxTDI1+(2Δfos_up+ 1)) ＞ Nzc, and maximum frequency deviation MaxFO2When ≠ 0,
Or
Or
Wherein,Accorded with for downward floor operation, v=0,1,2 ..., dmin-1； J ∈ [0,2*MaxTDI1], Min_distance { } is used for calculating distance most short between any two points in vector.
Terminal is by xU, v(n) sequence z is ultimately generated according to the flow shown in Fig. 1U, v(n), and by zU, v(n) believe in PRACH Sent on road.
Base station receives sequence R (n) on PRACH channels, and R (n) is sent into " sequence generating unit to be detected ", obtains Arrangement set D (n) to be detected, idiographic flow is as shown in Fig. 2 wherein, the length of D (n) sequences is NZC；
By arrangement set D (n) to be detected and alternative sequence setIt is sent into " sequence correlation unit ", obtains relevant peaks Value set
Work as MaxFO2When ≠ 0, from related peak setIn be met following formula
Wherein, max () is the operation for taking greatest member in set.
The e and v for meeting following formula are calculated, is respectivelyWithWherein 0≤e≤MaxTDI1。
And/or
It is determined that the random access sequence sent isSequenceAt the time of original position in R (n) corresponds to As
As shown in figure 4, present embodiment additionally provides a kind of information transmitting apparatus, including：Dispensing unit and transmitting element, Wherein：
Dispensing unit, for being configured to generate the random access sequence configuration information of random access sequence, Stochastic accessing Sequence configuration information comprises at least：The length N of random access sequenceZC, source sequence Xu(n) index u, maximum frequency deviation index MaxFOIdx and maximum delay interval index MaxTDIdx；
Transmitting element, for sending random access sequence configuration information.
As shown in figure 5, present embodiment additionally provides a kind of random access sequence based on above- mentioned information dispensing device Generating means, including：Receiving unit and sequence generating unit, wherein：
Receiving unit, for receiving random access sequence configuration information；
Sequence generating unit, for generating random access sequence according to random access sequence configuration information.
Sequence generating unit, specifically for basisRandom access sequence is generated, its In, XU, v(k) it is random access sequence, k=0,1 ... Nzc- 1, Xu(n) it is source sequence corresponding to u,For cyclic shift length.
As shown in fig. 6, present embodiment additionally provides a kind of reception device of random access sequence, including：Sequential reception Unit, sequence generating unit to be detected, sequence correlation unit and sequence decision unit, wherein：
Sequential reception unit, the receiving sequence R (n) on RACH, R (n) is sent to sequence to be detected and given birth to Into unit；
Sequence generating unit to be detected, for R (n) to be generated into arrangement set to be detected；
Sequence correlation unit, for arrangement set to be detected and alternative sequence set to be carried out into sequence related operation, obtain Correlation peak set
Sequence decision unit, for correlation peak setSequence judgement is carried out, obtains obtaining random access sequenceParameter, random access sequence is obtained according to parameter
Sequence correlation unit, specifically for selecting from during the middle acquisitions of sequence R (n) sequence A (n) continuous in time starting Carve, initial time is the system synchronization moment of RACH.
Sequence decision unit, specifically in maximum frequency deviation MaxFOiWhen=0, from related peak setIn be met'sWherein, MaxFOiFor MaxFOIdxiCorresponding maximum
Frequency deviation, MaxFOIdxiMaxFOIdx value is indexed for maximum frequency deviation；
Calculate and meetE and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiCorresponding maximum delay interval, MaxTDIdxiTaking for MaxTDIdx is indexed for maximum delay interval Value,To meetMinimum positive integer,For cyclic shift length, NZCFor the length of random access sequence Degree；
It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondence TsFor the system time-domain signal sampling interval.Or
Sequence decision unit, specifically in MaxFOiWhen ≠ 0, from related peak setIn be met'sAnd meet'sWherein, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiMaxFOIdx value is indexed for maximum frequency deviation；
Calculate and meetAnd/or E and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiIt is corresponding most Long time delay interval, MaxTDIdxiMaxTDIdx value is indexed for maximum delay interval, It is full FootMinimum positive integer,For cyclic shift length, NZCFor the length of random access sequence；
It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondence TsFor the system time-domain signal sampling interval.
Obviously, those skilled in the art should be understood that above-mentioned each module of the invention or each step can be with general Computing device realize that they can be concentrated on single computing device, or be distributed in multiple computing devices and formed Network on, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to they are stored Performed in the storage device by computing device, either they are fabricated to respectively each integrated circuit modules or by they In multiple modules or step be fabricated to single integrated circuit module to realize.So, the present invention is not restricted to any specific Hardware and software combines.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (21)

  1. A kind of 1. method for sending information, it is characterised in that including：
    First node sends the random access sequence configuration information for generating random access sequence to section point, described random Access sequence configuration information comprises at least：The length N of random access sequenceZC, source sequence Xu(n) index u, maximum frequency deviation index MaxFOIdx and maximum delay interval index MaxTDIdx；
    In (2*Tu*MaxTDIi+Tu) ＜=NzcAnd maximum frequency deviation MaxFOiIt is described when=0
    Or
    Wherein, TuTo meet (u*Tu)modNzc=1 minimum positive integer；MaxTDIiFor MaxTDIdxiWhen corresponding maximum Prolong interval, MaxTDIdxiFor MaxTDIdx value, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiFor MaxFOIdx value, For cyclic shift length.
  2. A kind of 2. generation method of the random access sequence of the method for sending information based on described in claim 1, it is characterised in that Including：
    The section point generates random access sequence according to the random access sequence configuration information.
  3. 3. method as claimed in claim 2, it is characterised in that Stochastic accessing sequence is generated according to random access sequence configuration information Row, including：
    The section point according toThe random access sequence is generated, wherein, Xu,v(k) For random access sequence, k=0,1 ... Nzc- 1, Xu(n) it is source sequence corresponding to u.
  4. 4. method as claimed in claim 3, it is characterised in that：
    In (2*Tu*MaxTDIi+Tu) ＞ NzcAnd maximum frequency deviation MaxFOiIt is described when=0Or OrWherein, v=0,1,2 ..., dmin- 1, dmin=Min_distance { mod (Tu*j,Nzc),Nzc-1}j∈[0,2* MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector；
    And maximum frequency deviation MaxFOiWhen ≠ 0,OrWherein,
    And maximum frequency deviation MaxFOiWhen ≠ 0,OrOrWherein, V=0,1,2 ..., dmin- 1,Min_ Distance { } represents to calculate distance most short between any two points in vector.
  5. 5. method as claimed in claim 3, it is characterised in that：
    In (2*Tu*MaxTDIi+ 1) ＜=NzcAnd maximum frequency deviation MaxFOiWhen=0,
    Or
    Wherein, TuTo meet (u*Tu)modNzc=1 minimum positive integer；MaxTDIiFor MaxTDIdxiBetween corresponding maximum delay Every MaxTDIdxiFor MaxTDIdx value, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiFor MaxFOIdx value, <mrow> <mover> <mi>v</mi> <mo>~</mo> </mover> <mo>=</mo> <mi>m</mi> <mi>a</mi> <mi>x</mi> <mo>{</mo> <msub> <mi>N</mi> <mrow> <mi>z</mi> <mi>c</mi> </mrow> </msub> <mo>-</mo> <mrow> <mo>(</mo> <mn>2</mn> <mo>*</mo> <msub> <mi>T</mi> <mi>u</mi> </msub> <mo>*</mo> <msub> <mi>MaxTDI</mi> <mi>i</mi> </msub> <mo>+</mo> <msub> <mi>T</mi> <mi>u</mi> </msub> <mo>)</mo> </mrow> <mo>*</mo> <mi>g</mi> <mo>-</mo> <mrow> <mo>(</mo> <mn>2</mn> <mo>*</mo> <msub> <mi>T</mi> <mi>u</mi> </msub> <mo>*</mo> <msub> <mi>MaxTDI</mi> <mi>i</mi> </msub> <mo>+</mo> <mn>1</mn> <mo>)</mo> </mrow> <mo>,</mo> <mn>0</mn> <mo>}</mo> <mo>;</mo> </mrow>
    In (2*Tu*MaxTDIi+ 1) ＞ NzcAnd maximum frequency deviation MaxFOiWhen=0,Or OrWherein, v=0,1,2 ..., dmin- 1, dmin=Min_distance { mod (Tu*j,Nzc),Nzc-1}j∈[0,2* MaxTDIi], Min_distance { } represents to calculate distance most short between any two points in vector；
    In (2*Tu*MaxTDIi+(2Δfos_up+ 1)) ＜=NzcAnd maximum frequency deviation MaxFOiWhen ≠ 0,, OrWherein,
    In (2*Tu*MaxTDIi+(2Δfos_up+ 1)) ＞ NzcAnd maximum frequency deviation MaxFOiWhen ≠ 0,OrOrWherein, V=0,1,2 ..., dmin- 1, Min_distance { } represents to calculate distance most short between any two points in vector.
  6. 6. a kind of sending method of the generation method based on any random access sequence of Claims 1 to 5, its feature exist In, including：
    The section point carries out predefined operation to the random access sequence and obtains sending sequence, and the transmission sequence is existed The first node is sent on RACH.
  7. 7. method as claimed in claim 6, it is characterised in that the predefined operation comprises at least subcarrier maps, discrete Inverse Fourier transform and increase cyclic prefix operation.
  8. A kind of 8. method of reseptance of random access sequence, it is characterised in that including：
    Receiving terminal receiving sequence R (n) on a random access channel, R (n) is generated into arrangement set to be detected；
    The arrangement set to be detected and alternative sequence set are subjected to sequence related operation, obtain correlation peak set
    To the correlation peak setSequence judgement is carried out, obtains obtaining random access sequenceParameter, according to described Parameter obtains random access sequence
    The parameter breath comprises at least：The length N of random access sequenceZC, source sequence Xu(n) index u, maximum frequency deviation index MaxFOIdx and maximum delay interval index MaxTDIdx；
    In (2*Tu*MaxTDIi+Tu) ＜=NzcAnd maximum frequency deviation MaxFOiIt is described when=0
    Or
    Wherein, TuTo meet (u*Tu)mod Nzc=1 minimum positive integer；MaxTDIiFor MaxTDIdxiIt is corresponding Maximum delay interval, MaxTDIdxiFor MaxTDIdx value, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiFor MaxFOIdx value, For cyclic shift length.
  9. 9. method as claimed in claim 8, it is characterised in that described to include R (n) generations arrangement set to be detected：Selection Sequence A (n) continuous in time initial time is obtained from sequence R (n), the initial time is for RACH System synchronization point.
  10. 10. method as claimed in claim 8, it is characterised in that to the correlation peak setSequence judgement is carried out, is obtained Obtain random access sequenceParameter, random access sequence is obtained according to the parameterIncluding：
    In maximum frequency deviation MaxFOiWhen=0, from related peak setIn be met's Wherein, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiMaxFOIdx value is indexed for maximum frequency deviation；
    Calculate and meetE and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiCorresponding maximum delay interval, MaxTDIdxiMaxTDIdx value is indexed for maximum delay interval,To meetMinimum positive integer,For cyclic shift length, NZCFor the length of random access sequence；
    It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondenceTsFor The system time-domain signal sampling interval.
  11. 11. method as claimed in claim 10, it is characterised in that：
    When, it is describedOrWherein,
    When, it is describedOrOr Wherein, v=0,1,2 ..., dmin- 1, Min_distance { } represents to calculate distance most short between any two points in vector；
    When,OrWherein,
    When,OrOrWherein, V=0,1,2 ..., dmin- 1,Min_ Distance { } represents to calculate distance most short between any two points in vector.
  12. 12. method as claimed in claim 8, it is characterised in that：
    In MaxFOiWhen ≠ 0, from related peak setIn be met'sAnd meet'sWherein, MaxFOiFor MaxFOIdxiCorresponding maximum frequency Partially, MaxFOIdxiMaxFOIdx value is indexed for maximum frequency deviation；
    Calculate and meetAnd/or E and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiCorresponding maximum delay interval, MaxTDIdxiMaxTDIdx value is indexed for maximum delay interval, To meet Minimum positive integer,For cyclic shift length, NZCFor the length of random access sequence；
    It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondenceTsTo be Unite the time-domain signal sampling interval.
  13. 13. method as claimed in claim 12, it is characterised in that：
    When,
    OrWherein,
    When,Or
    Or
    Wherein, v=0,1,2 ..., dmin- 1, Min_distance { } represents to calculate distance most short between any two points in vector；
    When,
    Or
    Wherein,
    When,OrOrWherein, v=0,1,2 ..., dmin- 1, Min_distance { } represents to calculate distance most short between any two points in vector.
  14. 14. method as claimed in claim 12, it is characterised in that also include：
    Obtaining random access sequenceAfterwards, the transmitting terminal of random access sequence and the amounts of frequency offset received are also calculated It is described
  15. A kind of 15. information transmitting apparatus, it is characterised in that including：Dispensing unit and transmitting element, wherein：
    The dispensing unit, it is described random for being configured to generate the random access sequence configuration information of random access sequence Access sequence configuration information comprises at least：The length N of random access sequenceZC, source sequence Xu(n) index u, maximum frequency deviation index MaxFOIdx and maximum delay interval index MaxTDIdx；
    The transmitting element, for sending the random access sequence configuration information；
    In (2*Tu*MaxTDIi+Tu) ＜=NzcAnd maximum frequency deviation MaxFOiIt is described when=0
    Or
    Wherein, TuTo meet (u*Tu)mod Nzc=1 minimum positive integer；MaxTDIiFor MaxTDIdxiCorresponding maximum delay Interval, MaxTDIdxiFor MaxTDIdx value, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiFor MaxFOIdx value, For cyclic shift length.
  16. A kind of 16. generating means of the random access sequence of the information transmitting apparatus based on claim 15, it is characterised in that bag Include：Receiving unit and sequence generating unit, wherein：
    The receiving unit, for receiving random access sequence configuration information；
    The sequence generating unit, for generating random access sequence according to the random access sequence configuration information.
  17. 17. device as claimed in claim 16, it is characterised in that：
    The sequence generating unit, specifically for basisGenerate the Stochastic accessing sequence Row, wherein, Xu,v(k) it is random access sequence, k=0,1 ... Nzc- 1, Xu(n) it is source sequence corresponding to u,For cyclic shift Length.
  18. A kind of 18. reception device of random access sequence, it is characterised in that including：Sequential reception unit, sequence to be detected generation Unit, sequence correlation unit and sequence decision unit, wherein：
    The sequential reception unit, the receiving sequence R (n) on RACH, R (n) is sent to the sequencing to be checked Column-generation unit；
    The sequence generating unit to be detected, for R (n) to be generated into arrangement set to be detected；
    The sequence correlation unit, for the arrangement set to be detected and alternative sequence set to be carried out into sequence related operation, Obtain correlation peak set
    The sequence decision unit, for the correlation peak setSequence judgement is carried out, obtains obtaining Stochastic accessing sequence RowParameter, random access sequence is obtained according to the parameter
    The parameter breath comprises at least：The length N of random access sequenceZC, source sequence Xu(n) index u, maximum frequency deviation index MaxFOIdx and maximum delay interval index MaxTDIdx；
    In (2*Tu*MaxTDIi+Tu) ＜=NzcAnd maximum frequency deviation MaxFOiIt is described when=0
    Or
    Wherein, TuTo meet (u*Tu)mod Nzc=1 minimum positive integer；MaxTDIiFor MaxTDIdxiIt is corresponding most Long time delay interval, MaxTDIdxiFor MaxTDIdx value, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiFor MaxFOIdx value, For cyclic shift length.
  19. 19. device as claimed in claim 18, it is characterised in that：
    The sequence correlation unit, specifically for selecting from during the middle acquisitions of sequence R (n) sequence A (n) continuous in time starting Carve, the initial time is the system synchronization moment of RACH.
  20. 20. device as claimed in claim 18, it is characterised in that：
    The sequence decision unit, specifically in maximum frequency deviation MaxFOiWhen=0, from related peak setIn be met'sWherein, MaxFOiFor MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiFor maximum Frequency deviation indexes MaxFOIdx value；
    Calculate and meetE and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiCorresponding maximum delay interval, MaxTDIdxiMaxTDIdx value is indexed for maximum delay interval,To meetMinimum positive integer,For cyclic shift length, NZCFor the length of random access sequence；
    It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondenceTsTo be Unite the time-domain signal sampling interval.
  21. 21. device as claimed in claim 18, it is characterised in that：
    The sequence decision unit, specifically in MaxFOiWhen ≠ 0, from related peak setIn be met'sAnd meet'sWherein, MaxFOi For MaxFOIdxiCorresponding maximum frequency deviation, MaxFOIdxiMaxFOIdx value is indexed for maximum frequency deviation；
    Calculate and meetAnd/or E and v, be designated asWithWherein, 0≤e≤MaxTDIi, MaxTDIiFor MaxTDIdxiCorresponding maximum delay interval, MaxTDIdxiMaxTDIdx value is indexed for maximum delay interval, To meet Minimum positive integer,For cyclic shift length, NZCFor the length of random access sequence；
    It is determined that the random access sequence receivedOriginal position in sequence R (n) is at the time of correspondenceTsTo be Unite the time-domain signal sampling interval.
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