WO2017045626A1 - Signal generation method and device - Google Patents

Abstract

Provided are a signal generation method and device. The method comprises: acquiring parameter information about at least one of the following parameters: a constant amplitude zero auto-correlation (CAZAC) root sequence, a maximum frequency offset parameter c, and a maximum delay interval parameter N_cs; and generating a CAZAC sequence according to the acquired parameter information.

Description

Signal generation method and device Technical field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for generating a signal.

Background technique

In the LTE (Long Term Evolution) system, random access is a basic function. The user equipment (UE) can be used by the system only after the random access process is synchronized with the uplink of the system. Scheduled for upstream transmission.

In the existing LTE system, the definition of the cyclic shift of the random access sequence is divided into a restricted set and an unrestricted set. The limit set is a set of available cyclic shifts when the Doppler shift is smaller than the PRACH (Physical Random Access Channel) subcarrier spacing. This design is applicable to the existing LTE band. However, for a car network scenario operating in a high frequency band, the maximum relative speed can reach 350 km/h or more, and its Doppler shift will exceed the PRACH subcarrier spacing. For example, if the center frequency is 5.9G and the motion rate is 350km/h, then the doppler frequency shift in this high-speed environment is:

That is, in the case of high-speed high-frequency, there may be a frequency offset of more than one 1.25k subcarrier spacing.

When the UE in the system may have such a large frequency offset, if a restricted set of cyclic shifts of the preamble defined in the existing protocol is used, a UE transmits the preamble in the detection window of the eNB (Evolved NodeB). The peak generated by the preamble after a frequency offset of one subcarrier interval may overlap with the peak generated by another UE after the frequency offset of the two subcarriers, resulting in an eNB error in determining the Timing Advance. Therefore, it is necessary to redefine the set of cyclic shifts for large frequency offset scenes.

Summary of the invention

Embodiments of the present invention provide a method and an apparatus for generating a signal, so as to at least solve how to construct The technical problem of building a new set of cyclic shifts.

According to an embodiment of the present invention, a method for generating a signal is provided, including:

Obtaining at least one parameter information, comprising: a constant amplitude zero autocorrelation CAZAC root sequence, the maximum frequency deviation parameter C, and the maximum delay interval parameter N _cs;

A CAZAC sequence is generated based on the acquired parameter information.

Optionally, a ratio of subcarrier spacing, where the maximum frequency offset parameter c is a positive integer and the value is preset or notified by the evolved base station eNB;

The maximum delay interval parameter N _cs is a cyclic shift value of the sequence corresponding to a maximum delay supported by the system, where the maximum delay interval parameter N _cs is a positive integer and the value is preset or Not notified by the eNB.

Optionally, the generated CAZAC sequence is:

_{x u, v (n) =} x u ((n + C v) mod N ZC), 0≤n≤N ZC -1, C v ∈S

Where x _u (n) is a time domain expression of the root sequence whose index is u, n is an integer, N _ZC is the sequence length, C _v is a cyclic shift value, and v is an index of the cyclic shift value C _v , S is a set of values of C _v .

Optionally, the value of the cyclic shift value C _v is determined by a corresponding cyclic shift d _u,k when the frequency offset is kΔf, where Δf is a subcarrier spacing, and k is a positive or negative frequency parameter c An integer, where:

among them:

p _k is the smallest non-negative integer satisfying (p _k u) mod N _ZC =k; or,

p _k = kp ₁ mod N _zc , where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1.

Optionally, the elements in the set S satisfy: C _i ≠ C _j ± d _{u, k} , C _i and C _j are any two elements in the set S, and k is a positive integer less than or equal to c.

Alternatively, the elements in the set S satisfies or C _v = Q _{v C v = (Q v + T} ) mod N zc, wherein:

T is an integer,

among them,

For the number of groups,

For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

For

The number of cyclic shift values remaining outside the group;

Among them, the value of each parameter is calculated by any of the following formulas:

The first set of formulas:

The second set of formulas:

The third set of formulas:

The fourth set of formulas:

The fifth group of formulas:

The sixth set of formulas:

The seventh set of formulas:

The eighth group of formulas:

among them,

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .

Optional when

And

Calculate each parameter in the C _v formula using the first set of formulas to the sixth set of formulas;

When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the seventh group formula or the eighth group formula.

Optionally, when _{N cs ≤d u, 1, d} u, when ₂ ≤N _ZC / 3, uses a seventh set or an eighth set of equations for each parameter formula C _v formula, the seventh group of the formula And in the eighth set of formulas d _u,2 =2d _u,1 .

Optionally, when N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

When using the first set of formulas to the sixth set of formulas, the parameters in the C _v formula are calculated, including:

When min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 ), calculate C using the first set of formulas _v parameters in the expression;

When min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, calculate C with the second set of formulas _v parameters in the expression;

When N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 ), the third group formula is used to calculate C _v parameters in the expression;

When N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, the fourth set of formula is used to calculate C each parameter _v in the expression;

When |d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 ), the fifth group formula is used to calculate C _v parameters in the expression;

When |d _u,1 -d _u,2 \>min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 ), calculate the C using the sixth set of formulas _v parameters in the expression;

among them,

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .

Alternatively, when c=2, the C _v =Q _v or C _v =(Q _v +)Tmod

among them:

T is an integer,

The value is calculated using the following formula:

The ninth group of formulas:

The tenth formula:

among them,

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .

Alternatively, when the _{N cs ≤min (d u, 1} , d u, 2) ≤N ZC / 3, and

When the ninth group formula is used to calculate each parameter in the C _v formula;

When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the tenth formula.

Optionally, when c>2, the elements in the set S satisfy C _v =Q _v or C _v =(Q _v +T) mod N _z ;

among them,

among them:

T is an integer,

Where D is the minimum of the interval between the two sequences in the sequence a ₀ , a ₁ , a ₂ .....a _i ... a _2k ;

Where a _i = A _i mod N _ZC ;

Wherein, A _i is a sequence of cyclic shift value M _i;

Wherein, M ₀ is a sequence of cyclic shift values A ₀ generated by the CAZAC root sequence, where A ₀ is a value selected from a preset set or is a preset value;

Where M ₁ , M ₂ , ... M _k , M _k+1 , M _k+2 , ... M _2k-1 , M _2k are sequentially passed through -kΔf, -(k- 1) a sequence obtained by shifting Δf, ... -f, f, 2f, ..., (k-1) Δf, kΔf;

Where k is a positive integer less than or equal to c.

Optionally, when c>2, the elements in the set S satisfy C _v =Q _v or C _v =(Q _v +T) mod N _z , wherein:

T is an integer,

among them,

For the number of groups,

For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

For

The number of cyclic shift values remaining outside the group;

The values of each parameter are calculated using the twelfth group formula:

Twelfth group formula:

Alternatively, when the _{N cs ≤d u, 1, d} u, when ₂ ≤N _ZC / 3, is calculated using the formula XII set of equations of the parameters of formula C _v.

Optionally, the CAZAC sequence is a ZC sequence.

According to another embodiment of the present invention, a signal generating apparatus is further provided, including:

The obtaining module is configured to obtain at least one of the following parameter information, including: a constant envelope zero autocorrelation CAZAC root sequence, a maximum frequency offset parameter c, and a maximum delay interval parameter N _cs ;

The generating module is configured to generate a CAZAC sequence according to the obtained parameter information.

Optionally, the maximum frequency offset parameter c is a ratio of a maximum frequency offset supported by the system to a subcarrier spacing, where the maximum frequency offset parameter c is a positive integer and the value is preset or notified by the evolved base station eNB. The maximum delay interval parameter N _cs is a cyclic shift value of the sequence corresponding to a maximum delay supported by the system, wherein the maximum delay interval parameter N _cs is a positive integer and the value is preset or It is notified by the eNB.

Optionally, the generated CAZAC sequence is:

x _u,v (n)=x _u ((n+C _v )mod N _ZC ),0≤n≤N _ZC -1,C _v ∈S

Where x _u (n) is the time domain expression of the root sequence with index u, n is an integer, N _ZC is the sequence length, C _v is the cyclic shift value, v is the index of the cyclic shift, and S is C _v The collection of values.

Optionally, the value of the cyclic shift value C _v is determined by a corresponding cyclic shift d _u,k when the frequency offset is kΔf, where Δf is a subcarrier spacing, and k is a positive integer less than or equal to the maximum frequency offset parameter c, among them:

among them:

p _k is the smallest non-negative integer satisfying (p _k u) mod N _ZC =k; or,

p _k = kp ₁ mod N _zc , where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1.

Optionally, the elements in the set S satisfy: C _i ≠ C _j ± d _{u, k} , C _i and C _j are any two elements in the set S, and k is a positive integer less than or equal to c.

Optionally, the medium element of the set S satisfies C _v =Q _v or C _v =(Q _v +T) mod N _zc , wherein:

T is an integer,

among them,

For the number of groups,

For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

For

The number of cyclic shift values remaining outside the group;

Among them, the value of each parameter is calculated by any of the following formulas:

The first set of formulas:

The second set of formulas:

The third set of formulas:

The fourth set of formulas:

The fifth group of formulas:

The sixth set of formulas:

The seventh set of formulas:

The eighth group of formulas:

among them,

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .

Alternatively, when the _{N cs ≤min (d u, 1} , d u, 2) ≤N ZC / 3, and

Calculate each parameter in the C _v formula using the first set of formulas to the sixth set of formulas;

When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the seventh group formula or the eighth group formula.

Optionally, when _{N cs ≤d u, 1, d} u, when ₂ ≤N _ZC / 3, uses a seventh set or an eighth set of equations for each parameter formula C _v formula, the seventh group of the formula And in the eighth set of formulas d _u,2 =2d _u,1 .

Alternatively, when the _{N cs ≤min (d u, 1} , d u, 2) ≤N ZC / 3, and

When using the first set of formulas to the sixth set of formulas, the parameters in the C _v formula are calculated, including:

When min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 ), calculate C using the first set of formulas _v parameters in the expression;

When min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, the second group formula is used to calculate C _v parameters in the expression;

When N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 ), the third group formula is used to calculate C _v parameters in the expression;

When N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, the fourth group formula is used to calculate C _v parameters in the expression;

When |d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 ), the fifth group formula is used to calculate C _v parameters in the expression;

When |d _u,1 -d _u,2 \>min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 ), calculate the C using the sixth set of formulas _v parameters in the expression;

among them,

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .

Alternatively, when c=2, the C _v =Q _v or C _v =(Q _v +)Tmod

among them:

T is an integer,

The value is calculated using the following formula:

The ninth group of formulas:

The tenth formula:

among them,

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .

Alternatively, when the _{N cs ≤min (d u, 1} , d u, 2) ≤N ZC / 3, and

When the ninth group formula is used to calculate each parameter in the C _v formula;

When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the tenth formula.

Optionally, when c>2, the elements in the set S satisfy C _v =Q _v or C _v =(Q _v +T) mod N _z ;

among them,

among them:

T is an integer,

Where D is the minimum of the interval between the two sequences in the sequence a ₀ , a ₁ , a ₂ .....a _i ... a _2k ;

Where a _i = A _i mod N _ZC ;

Wherein, A _i is a sequence of cyclic shift value M _i;

Wherein, M ₀ is a sequence of cyclic shift values A ₀ generated by the CAZAC root sequence, where A ₀ is a value selected from a preset set or is a preset value;

Where M ₁ , M ₂ , ... M _k , M _k+1 , M _k+2 , ... M _2k-1 , M _2k are sequentially passed through -kΔf, -(k- 1) a sequence obtained by shifting Δf, ... -f, f, 2f, ..., (k-1) Δf, kΔf;

Where k is a positive integer less than or equal to c.

Optionally, when c>2, the elements in the set S satisfy C _v =Q _v or C _v =(Q _v +T) mod N _z , wherein:

T is an integer,

among them,

For the number of groups,

For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

For

The number of cyclic shift values remaining outside the group;

The values of each parameter are calculated using the twelfth group formula:

Twelfth group formula:

Alternatively, when the _{N cs ≤d u, 1, d} u, when ₂ ≤N _ZC / 3, is calculated using the formula XII set of equations of the parameters of formula C _v.

Optionally, the CAZAC sequence is a ZC sequence.

According to still another embodiment of the present invention, a storage medium is also provided. The storage medium is arranged to store program code for performing the following steps:

Obtaining at least one parameter information, comprising: a constant amplitude zero autocorrelation CAZAC root sequence, the maximum frequency deviation parameter C, and the maximum delay interval parameter N _cs;

A CAZAC sequence is generated based on the acquired parameter information.

The embodiment provided by the present invention provides a new CAZAC sequence generation manner, which is not limited to use in a random access scenario, and can be used in any scenario in which a CAZAC sequence is used for transmission.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

FIG. 1 is a flowchart of a method for generating a signal according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a peak generated on the eNB side after a random access sequence transmitted by the UE after c=2 does not exceed a frequency offset of 2·Δf according to the first embodiment of the present invention. ;

FIG. 3 is a schematic diagram of cyclic shift according to Embodiment 1 of the present invention; FIG.

4 is a schematic diagram of cyclic shift according to Embodiment 2 of the present invention;

FIG. 5 is a structural diagram of a signal generating apparatus according to an embodiment of the present invention.

detailed description

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

FIG. 1 is a flowchart of a method for generating a signal according to an embodiment of the present invention. The method shown in Figure 1 includes:

Step 101: Acquire at least one parameter information, including: a constant envelope zero autocorrelation CAZAC root sequence, a maximum frequency offset parameter, and a maximum delay interval parameter;

Step 102: Generate a CAZAC sequence according to the obtained parameter information.

The method provided by the present invention provides a new CAZAC sequence generation manner, which is not limited to use in a random access scenario, and can be used in any scenario that uses a CAZAC sequence for transmission.

Embodiment 1:

In this embodiment, the maximum frequency offset of the UE in the cell may reach 2 times or nearly 2 times the PRACH subcarrier size, that is, the maximum frequency offset f _Δ =c·Δf=2·Δf, where Δf is the subcarrier of the PRACH Width, such as in the LTE protocol, Δf = 1.25 kHz. This embodiment and the following embodiments 2-6 take the random access sequence as an example to show how the UE generates a random access sequence in this case. In the present invention, a random access sequence is taken as an example of a ZC sequence, wherein the ZC sequence is one of CAZAC sequences.

The UE generates a random access signal according to the maximum frequency offset parameter, where the maximum frequency offset parameter is a ratio of a maximum frequency offset and a subcarrier spacing supported by the system, where the maximum frequency offset parameter is a positive integer, and the value is a pre It is set or notified by the eNB. In this embodiment, the maximum frequency offset parameter c=2.

The UE generates a random access sequence according to the following formula:

_{x u, v (n) =} x u ((n + C v) mod N ZC), 0≤n≤N ZC -1, C v ∈S

Wherein, N _ZC is the length of the random access sequence, such as N _ZC =839, and the actual application may not be limited to the value, C _v is a cyclic shift value, v is an index of cyclic shift, and set S is C _v A collection of values.

x _u (n) is a time domain expression whose root sequence index is u, specifically

FIG. 2 is a schematic diagram of a peak generated on the eNB side after a random access sequence transmitted by the UE after c=2 does not exceed a frequency offset of 2·Δf according to the first embodiment of the present invention. Where d _u,1 and d _u,2 are cyclic shift values corresponding to a frequency offset of a random access sequence after a double subcarrier spacing and a frequency offset of twice the subcarrier spacing. In this case, the positions of these possible virtual peaks should be considered to determine the value of the cyclic shift, to avoid collision of possible virtual peaks between UEs, so that the eNB cannot distinguish which sequence the UE sends.

In order to avoid overlapping of peaks generated on the eNB side after the random access sequences generated by different UEs pass different frequency offsets, the set of values of C _v should not include x _u,v (n) corresponding to the C _v through ±kΔf The cyclic shift value d _u,k ,k corresponding to the frequency offset is a positive integer less than or equal to c. That is, the elements in the set S satisfy: C _i ≠ C _j ± d _{u, k} , C _i and C _j are any two elements in the set S, and k is a positive integer less than or equal to c. In this case, the elements in the cyclic shift set become less than when the maximum frequency offset in the system is less than the subcarrier spacing.

In practical applications, the value range of C _v may be a subset of the set S.

Before giving the calculation formula of C _v , first give the calculation formulas of d _u,1 and d _u,2 , as follows:

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1.

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC =2.

The determining means of the cyclic shift C _v is given below.

If N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, at this time d _u,2 =2d _u,1 , the expression of the cyclic shift value C _v is defined by:

The N _cs is a maximum delay interval, or a cyclic shift size, where the maximum delay interval is a cyclic shift value of the sequence corresponding to a maximum delay supported by the system, where the maximum delay interval parameter is A positive integer and the value is preset or notified by the eNB.

The values of each parameter are given by the following formula:

In the following formula, divide d _u,1 into N _cs intervals

Cyclic shift, which will be

The cyclic shifts form a group, and d _start is the spacing of the groups.

The number of groups that can be supported by the ZC sequence,

The number of cyclic shifts remaining for the ZC sequence in addition to the group.

Or can also be written as

FIG. 3 is a schematic diagram of a cyclic shift according to Embodiment 1 of the present invention. The five clusters of gray areas in the figure represent a cyclic shift and five cluster peaks generated after the frequency offset of the positive/negative double subcarrier and the positive/negative double subcarrier spacing. The middlemost cluster peak corresponds to no frequency. The cyclic shift of the partial shift, the two cluster peaks closest to the middle correspond to the cyclic shift after the positive/negative double subcarrier frequency offset, and the two cluster peaks on both sides correspond to the cyclic shift after the positive/negative double subcarrier frequency offset Bit. The slash, black, and grid lines are similar. The dotted line in the figure is contained in a group.

Cyclic shift value, the number of remaining cyclic shifts

Here is an example to illustrate.

When u=12, N _ZC =839, d _u,1 =70,d _u,2 =140, assuming N _cs =17, then

therefore

That is, the values of C ₀ to C ₇ are: _{0, 17} , 34, 51, 348, 365, 382, 399. That is, the set of cyclic shifts S1 = {0, 17, 34, 51, 348, 365, 382, 399}.

If the maximum frequency offset in the system is less than the subcarrier spacing, assuming N _cs = 17, the set of cyclic shifts S2 = {0, 17, 34, 51, 208, 225, 242, 259, 416, 433, 450, 467, 624, 641, 658, 675} according to the calculation formula in the prior art. It can be seen that the set S1 contains 8 elements, and the set S2 contains 16 elements. When the frequency offset is larger, the number of available cyclic shifts is reduced.

Embodiment 2:

If N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

The expression of the cyclic shift C _v is as follows:

The value of the parameter in the C _v expression is calculated according to different situations using different formulas, as follows.

If the cyclic shift of the random access sequence transmitted by the UE is x, then the cyclic shift after double subcarrier frequency offset and twice the subcarrier frequency offset and the interval between x are: min(d _u,1 , d _u,2 ), |d _u,1 -d _u,2 |, N _ZC -max(d _u,1 ,d _u,2 ). In this case, the expression of C _v is related to the size relationship between these intervals. The specific analysis is as follows.

If min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 )

In this case, the distance between N _zc -2max(d _u,1 , d _u,2 ) is the smallest.

In the formula below,

For the number of cyclic shifts that can be accommodated between N _zc -2max(d _u,1 ,d _u,2 ),

A cyclic shift constitutes a group. d _start can be understood as the spacing of the group. The number of groups that the root sequence can accommodate depends on the size of |d _u,1 -d _u,2 |

Is the number of the groups contained in |d _u,1 -d _u,2 |.

FIG. 4 is a schematic diagram of a cyclic shift according to Embodiment 2 of the present invention. In the dotted line box, there are 2 cyclic shift values contained in one group, and black is the rest.

A cyclic shift.

If min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |

Similar to the above, the calculation formula of each parameter is:

In this case, the distance between |d _u,1 -d _u,2 | is the smallest.

In the formula below,

The number of cyclic shifts that can be accommodated between |d _u,1 -d _u,2 |

A cyclic shift constitutes a group. d _start can be understood as the spacing of the group. The number of groups that the root sequence can accommodate depends on the size of N _ZC -2max(d _u,1 ,d _u,2 ).

Is the number of said groups contained within N _zc -2max(d _u,1 ,d _u,2 ).

If N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 )

Similar to the above, the calculation formula of each parameter is:

If N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |

Similar to the above, the calculation formula of each parameter is:

If |d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 )

Similar to the above, the calculation formula of each parameter is:

If |d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 )

Similar to the above, the calculation formula of each parameter is:

Embodiment 3:

If N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

The expression of the cyclic shift C _v is as follows:

If the assigned sequence is x, then the cyclic shift after double the subcarrier offset and twice the subcarrier offset is: xd _u,1 ,x+d _u,1 ,x+d _u,2 ,x +N _zc -d _u,2 ,x and the distance between these cyclic shifts are d _u,1 ,d _u,2 ,min(d _u,1 ,d _u,2 ),|d _u,1 -d _u,2 |, N _ZC -max(d _u,1 ,d _u,2 ), the value of C _v depends on the minimum distance,

The value of the cycle is the minimum number of cyclic shifts that can be accommodated.

Embodiment 4:

If N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, at this time d _u,2 =2d _u,1 , the expression of the cyclic shift C _v is defined by:

Embodiment 5:

For the case of c>2, the transmitting end generates a random access sequence according to x _u,v (n)=x _u ((n+C _v ) mod N _ZC ), and the value of C _v is determined by the frequency offset being kΔf. The corresponding cyclic shift d _uk determines that k is a positive integer less than or equal to c. When the frequency offset is kΔf, the corresponding cyclic shift d _uk is

Where p _k is the smallest non-negative integer satisfying (p _k u)mod N _ZC =k.

If N _cs ≤d _u,1 ,d _u,2 ,...,d _u,c ≤N _ZC /3, at this time d _u,k =kd _u,1 , where k is a positive integer less than or equal to c, cyclic shift The expression for bit C _v is defined by:

The values of each parameter are given by the following formula. In the following formula, divide d _u1 into N _cs intervals.

Cyclic shift, which will be

The cyclic shifts form a group, and d _start is the spacing of the groups.

The number of groups that can be supported by the ZC sequence,

The number of cyclic shifts remaining for the ZC sequence in addition to the group.

or,

The expression of the cyclic shift C _v is defined by:

among them

D is the minimum of the interval between the two sequences in the sequence a ₀ , a ₁ , a ₂ .....a _i ... a _2k ;

Where a _i = A _i mod N _ZC ;

Wherein, A _i is a sequence of cyclic shift value M _i;

Wherein M ₀ is a sequence of cyclic shift values A ₀ generated by the CAZAC root sequence, where A ₀ is a value selected from a preset set;

Where M ₁ , M ₂ , ... M _k , M _k+1 , M _k+2 , ... M _2k-1 , M _2k are sequentially passed through -kΔf, -(k- 1) A sequence obtained by frequency offset of Δf, ... -f, f, 2f, ..., (k-1) Δf, kΔf, where k is a positive integer less than or equal to c.

For example, c=3, u=36, N _ZC =839. It is assumed that the cyclic shift of the random access sequence generated by the UE is 350, TA=0. Calculated d _u1 =36, d _u2 =303, d _u3 =233, so the cyclic shift obtained by the sequence after ±1, ±2, ±3 octave offset and 100 sorted from small to large are 47, 117 314, 350, 386, 583, 653, the minimum value of the two-two interval is 36, then D = 36.

Example 6:

The expression of the cyclic shift C _v ' can be:

C _v '=(C _v +T) mod N _zc , T is an integer, wherein the calculation formula of C _v is as described in Examples 1 to 5.

The example in the first embodiment will be described. In the first embodiment, u=12, N _ZC =839, N _cs =17, and the obtained set of C _v is

S = {0, 17, 34, 51, 348, 365, 382, 399}.

In this embodiment, if T=10, the corresponding set of values of C _v ' is

S' = {10, 27, 44, 61, 358, 375, 392, 409}.

In practical applications, a cell may use a cyclic shift set S or a cyclic shift set S'. However, under one cell, only one set can be used, that is, the cyclic shift value can only come from the same a collection. For example, for the two sets above, either use the set S or use the set S’.

Example 7:

The devices in the embodiments 1 to 6 can also be used for other signals, such as SRS (Sounding Reference Signal), PUCCH (Physical Uplink Control CHannel), etc. sent by the UE. The PUCCH is the ZC sequence described above, and the SRS or PUCCH transmitted by the UE is a sequence corresponding to the cyclic shift in the set S or the set S′. The cyclic shift may be obtained by the UE according to a preset rule, such as a function of a C-RNTI (Cell Radio Network Temporary Identifier) of the UE, such as C-RNTI mod M, where "mod" means modulo, and M is the number of cyclic shifts in the set S or S'. Or the cyclic shift is configured by the eNB, for example, the eNB notifies the UE of a cyclically shifted index. The actual application is not limited to these signals and can be used in any scenario in which a CAZAC sequence is transmitted.

FIG. 5 is a structural diagram of a signal generating apparatus according to an embodiment of the present invention. The device shown in Figure 5 includes:

The obtaining module 501 is configured to obtain the following at least one parameter information, including: a constant envelope zero autocorrelation CAZAC root sequence, a maximum frequency offset parameter c, and a maximum delay interval parameter N _cs ;

The generating module 502 is configured to generate a CAZAC sequence according to the acquired parameter information.

The maximum frequency offset parameter c is a ratio of a maximum frequency offset and a subcarrier spacing supported by the system, where the maximum frequency offset parameter c is a positive integer and the value is preset or notified by the evolved base station eNB; The maximum delay interval parameter N _cs is a cyclic shift value of the sequence corresponding to a maximum delay supported by the system, where the maximum delay interval parameter N _cs is a positive integer and the value is preset or Not notified by the eNB.

Wherein, the generated CAZAC sequence is:

_{x u, v (n) =} x u ((n + C v) mod N ZC), 0≤n≤N ZC -1, C v ∈S

Where x _u (n) is the time domain expression of the root sequence with index u, n is an integer, N _ZC is the sequence length, C _v is the cyclic shift value, v is the index of the cyclic shift, and S is C _v The collection of values.

Wherein, the value of the cyclic shift value C _v is determined by a corresponding cyclic shift d _u,k when the frequency offset is kΔf, where Δf is a subcarrier spacing, and k is a positive integer less than or equal to the maximum frequency offset parameter c, where:

among them:

p _k is the smallest non-negative integer satisfying (p _k u) mod N _ZC =k; or,

p _k = kp ₁ mod N _zc , where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1.

The elements in the set S satisfy: C _i ≠ C _j ± d _{u, k} , C _i and C _j are any two elements in the set S, and k is a positive integer less than or equal to c.

Wherein the medium element of the set S satisfies C _v =Q _v or C _v =(Q _v +T) mod N _zc , wherein:

T is an integer,

among them,

For the number of groups,

For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

For

The number of cyclic shift values remaining outside the group;

Among them, the value of each parameter is calculated by any of the following formulas:

The first set of formulas:

The second set of formulas:

The third set of formulas:

The fourth set of formulas:

The fifth group of formulas:

The sixth set of formulas:

The seventh set of formulas:

The eighth group of formulas:

among them,

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .

Wherein, when N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

Calculate each parameter in the C _v formula using the first set of formulas to the sixth set of formulas;

When N _cs ≤ d _u , ₁ , d _u , ₂ ≤ N _ZC /3, the parameters in the C _v formula are calculated using the seventh group formula or the eighth group formula.

Wherein, when N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, when the seventh group formula or the eighth group formula is used to calculate each parameter in the C _v formula, the seventh group formula and the In the eight sets of formulas, d _u,2 =2d _u,1 .

Wherein, when N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

When using the first set of formulas to the sixth set of formulas, the parameters in the C _v formula are calculated, including:

When min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 ), calculate C using the first set of formulas _v parameters in the expression;

When min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, calculate C with the second set of formulas _v parameters in the expression;

When N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 ), the third group formula is used to calculate C _v parameters in the expression;

When N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, the fourth group formula is used to calculate C _v parameters in the expression;

When |d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 ), the fifth group formula is used to calculate C _v parameters in the expression;

When |d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 ), calculate the C using the sixth set of formulas _v parameters in the expression;

among them,

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .

Wherein, when c=2, the C _v =Q _v or

among them:

T is an integer,

The value is calculated using the following formula:

The ninth group of formulas:

The tenth formula:

among them,

Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .

Wherein, when N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

When the ninth group formula is used to calculate each parameter in the C _v formula;

When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the tenth formula.

Wherein, when c>2, the elements in the set S satisfy C _v =Q _v or

among them,

among them:

T is an integer,

Where D is the minimum of the interval between the two sequences in the sequence a ₀ , a ₁ , a ₂ .....a _i ... a _2k ;

Where a _i = A _i mod N _ZC ;

Wherein, A _i is a sequence of cyclic shift value M _i;

Wherein, M ₀ is a sequence of cyclic shift values A ₀ generated by the CAZAC root sequence, where A ₀ is a value selected from a preset set or is a preset value;

Where M ₁ , M ₂ , ... M _k , M _k+1 , M _k+2 , ... M _2k-1 , M _2k are sequentially passed through -kΔf, -(k- 1) a sequence obtained by shifting Δf, ... -f, f, 2f, ..., (k-1) Δf, kΔf;

Where k is a positive integer less than or equal to c.

Wherein, when c>2, the elements in the set S satisfy C _v =Q _v or

among them:

T is an integer,

among them,

For the number of groups,

For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

For

The number of cyclic shift values remaining outside the group;

The values of each parameter are calculated using the twelfth group formula:

Twelfth group formula:

Wherein, when N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, each parameter in the C _v formula is calculated by using the formula of the twelfth group formula.

Wherein, the CAZAC sequence is a ZC sequence.

The device provided by the present invention provides a new CAZAC sequence generation mode, which is not limited to the random access scenario and can be used in any scenario that uses the CAZAC sequence for transmission.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the device embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any particular The combination of hardware and software.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

The above is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Industrial applicability

As described above, a method and an apparatus for generating a signal provided by an embodiment of the present invention have the following beneficial effects: a new CAZAC sequence generation manner is provided, which is not limited to use in a random access scenario, and can be used for any CAZAC sequence. The scene in which the transfer takes place.

Claims (30)

1. A method for generating a signal, comprising:

   Obtaining at least one parameter information, comprising: a constant amplitude zero autocorrelation CAZAC root sequence, the maximum frequency deviation parameter C, and the maximum delay interval parameter N _cs;

   A CAZAC sequence is generated based on the acquired parameter information.
2. The method of claim 1 wherein:

   The maximum frequency offset parameter c is a ratio of a maximum frequency offset and a subcarrier spacing supported by the system, where the maximum frequency offset parameter c is a positive integer and the value is preset or notified by the evolved base station eNB;

   The maximum delay interval parameter N _cs is a cyclic shift value of the sequence corresponding to a maximum delay supported by the system, where the maximum delay interval parameter N _cs is a positive integer and the value is preset or Not notified by the eNB.
3. The method of claim 1 or 2, wherein the generated CAZAC sequence is:

   _{x u, v (n) =} x u ((n + C v) mod N ZC), 0≤n≤N ZC -1, C v ∈S

   Where x _u (n) is a time domain expression of the root sequence whose index is u, n is an integer, N _ZC is the sequence length, C _v is a cyclic shift value, and v is an index of the cyclic shift value C _v , S is a set of values of C _v .
4. The method according to claim 3, wherein the value of the cyclic shift value C _v is determined by a corresponding cyclic shift d _u,k when the frequency offset is kΔf, where Δf is a subcarrier spacing and k is less than or equal to The positive integer of the maximum frequency offset parameter c, where:

   

   among them:

   p _k is the smallest non-negative integer satisfying (p _k u) mod N _ZC =k; or,

   p _k = kp ₁ mod N _zc , where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1.
5. A method according to any one of claims 1 to 4, wherein:

   The elements in the set S satisfy: C _i ≠ C _j ± d _{u, k} , C _i and C _j are any two elements in the set S, and k is a positive integer less than or equal to c.
6. The method of claim 5, wherein the medium element of the set S satisfies C _v = Q _v or C _v = (Q _v + T) mod N _zc , wherein:

   T is an integer,

   

   among them,

   

   For the number of groups,

   

   For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

   

   For

   

   The number of cyclic shift values remaining outside the group;

   Among them, the value of each parameter is calculated by any of the following formulas:

   The first set of formulas:

   

   

   

   

   The second set of formulas:

   

   

   

   

   The third set of formulas:

   

   

   

   

   The fourth set of formulas:

   

   

   

   

   The fifth group of formulas:

   

   

   

   

   The sixth set of formulas:

   

   

   

   

   The seventh set of formulas:

   

   

   

   

   The eighth group of formulas:

   

   

   

   

   among them,

   

   Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

   

   Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .
7. The method of claim 6 wherein:

   When N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

   

   Calculate each parameter in the C _v formula using the first set of formulas to the sixth set of formulas;

   When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the seventh group formula or the eighth group formula.
8. The method of claim 7 wherein

   When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, when the seventh group formula or the eighth group formula is used to calculate each parameter in the C _v formula, the seventh group formula and the eighth group In the formula d _u,2 =2d _u,1 .
9. The method of claim 7 wherein

   When N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

   

   When using the first set of formulas to the sixth set of formulas, calculate the parameters in the C _v formula, including:

   When min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 ), calculate C using the first set of formulas _v parameters in the expression;

   When min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, calculate C with the second set of formulas _v parameters in the expression;

   When N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 ), the third group formula is used to calculate C _v parameters in the expression;

   When N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, the fourth group formula is used to calculate C _v parameters in the expression;

   When |d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 ), the fifth group formula is used to calculate C _v parameters in the expression;

   When |d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 ), calculate the C using the sixth set of formulas _v parameters in the expression;

   among them,

   

   Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

   

   Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .
10. A method according to any one of claims 1 to 5, wherein:

    When c=2, the C _v =Q _v or C _v =(Q _v +T) mod N _zc Q _v =vN _cs ,

    

    among them:

    T is an integer,

    

    The value is calculated using the following formula:

    The ninth group of formulas:

    

    The tenth formula:

    

    among them,

    

    Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

    

    Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .
11. The method of claim 9 wherein:

    When N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

    

    When the ninth group formula is used to calculate each parameter in the C _v formula;

    When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the tenth formula.
12. A method according to any one of claims 1 to 5, wherein:

    When c>2, the elements in the set S satisfy C _v =Q _v or C _v =(Q _v +T) mod N _zc ;

    Where Q _v =vN _cs ,

    

    among them:

    T is an integer,

    

    Where D is the minimum of the interval between the two sequences in the sequence a ₀ , a ₁ , a ₂ .....a _i ... a _2k ;

    Where a _i = A _i mod N _ZC ;

    Wherein, A _i is a sequence of cyclic shift value M _i;

    Wherein, M ₀ is a sequence of cyclic shift values A ₀ generated by the CAZAC root sequence, where A ₀ is a value selected from a preset set or is a preset value;

    Where M ₁ , M ₂ , ... M _k , M _k+1 , M _k+2 , ... M _2k-1 , M _2k are sequentially passed through -kΔf, -(k- 1) a sequence obtained by shifting Δf, ... -f, f, 2f, ..., (k-1) Δf, kΔf;

    Where k is a positive integer less than or equal to c.
13. A method according to any one of claims 1 to 5, wherein:

    When c>2, the elements in the set S satisfy C _v =Q _v or C _v =(Q _v +T) mod N _zc , where:

    T is an integer,

    

    among them,

    

    For the number of groups,

    

    For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

    

    For

    

    The number of cyclic shift values remaining outside the group;

    The values of each parameter are calculated using the twelfth group formula:

    Twelfth group formula:

    

    

    

    
14. The method of claim 1 wherein:

    When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the formula of the twelfth formula.
15. The method according to any one of claims 1 to 14, wherein the CAZAC sequence is a ZC sequence.
16. A signal generating device includes:

    The obtaining module is configured to obtain at least one of the following parameter information, including: a constant envelope zero autocorrelation CAZAC root sequence, a maximum frequency offset parameter c, and a maximum delay interval parameter N _cs ;

    The generating module is configured to generate a CAZAC sequence according to the obtained parameter information.
17. The device of claim 16 wherein:

    The maximum frequency offset parameter c is a ratio of a maximum frequency offset and a subcarrier spacing supported by the system, where the maximum frequency offset parameter c is a positive integer and the value is preset or notified by the evolved base station eNB;

    The maximum delay interval parameter N _cs is a cyclic shift value of the sequence corresponding to a maximum delay supported by the system, where the maximum delay interval parameter N _cs is a positive integer and the value is preset or Not notified by the eNB.
18. The apparatus of claim 16 or 17, wherein the generated CAZAC sequence is:

    _{x u, v (n) =} x u ((n + C v) mod N ZC), 0≤n≤N ZC -1, C v ∈S

    Where x _u (n) is the time domain expression of the root sequence with index u, n is an integer, N _ZC is the sequence length, C _v is the cyclic shift value, v is the index of the cyclic shift, and S is C _v The collection of values.
19. The apparatus according to claim 18, wherein the value of the cyclic shift value C _v is determined by a corresponding cyclic shift d _u,k when the frequency offset is kΔf, wherein Δf is a subcarrier spacing and k is less than or equal to a maximum frequency A positive integer of the partial parameter c, where:

    

    among them:

    p _k is the smallest non-negative integer satisfying (p _k u) mod N _ZC =k; or,

    p _k = kp ₁ mod N _zc , where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1.
20. Apparatus according to any one of claims 16 to 19 wherein:

    The elements in the set S satisfy: C _i ≠ C _j ± d _{u, k} , C _i and C _j are any two elements in the set S, and k is a positive integer less than or equal to c.
21. The apparatus according to claim 20, wherein said medium element of said set S satisfies C _v = Q _v or C _v = (Q _v + T) mod N _zc , wherein:

    T is an integer,

    

    among them,

    

    For the number of groups,

    

    For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

    

    For

    

    The number of cyclic shift values remaining outside the group;

    Among them, the value of each parameter is calculated by any of the following formulas:

    The first set of formulas:

    

    

    

    

    The second set of formulas:

    

    

    

    

    The third set of formulas:

    

    

    

    

    The fourth set of formulas:

    

    

    

    

    The fifth group of formulas:

    

    

    

    

    The sixth set of formulas:

    

    

    

    

    The seventh set of formulas:

    

    

    

    

    The eighth group of formulas:

    

    

    

    

    among them,

    

    Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

    

    Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .
22. The device of claim 21 wherein:

    When N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

    

    Calculate each parameter in the C _v formula using the first set of formulas to the sixth set of formulas;

    When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the seventh group formula or the eighth group formula.
23. The device according to claim 22, wherein

    When _{N cs ≤d u, 1, d} u, when ₂ ≤N _ZC / 3, the parameters calculated using the formula C _v seventh group of formula or set of formulas VIII, the seventh and the eighth group of the formula group In the formula d _u,2 =2d _u,1 .
24. The device according to claim 22, wherein

    When N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

    

    When using the first set of formulas to the sixth set of formulas, the parameters in the C _v formula are calculated, including:

    When min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 ), calculate C using the first set of formulas _v parameters in the expression;

    When min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, calculate C with the second set of formulas _v parameters in the expression;

    When N _ZC -2max(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 ), the third group formula is used to calculate C _v parameters in the expression;

    When N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 )>|d _u,1 -d _u,2 |, the fourth group formula is used to calculate C _v parameters in the expression;

    When |d _u,1 -d _u,2 |>N _ZC -2max(d _u,1 ,d _u,2 )>min(d _u,1 ,d _u,2 ), the fifth group formula is used to calculate C _v parameters in the expression;

    When |d _u,1 -d _u,2 |>min(d _u,1 ,d _u,2 )>N _ZC -2max(d _u,1 ,d _u,2 ), calculate the C using the sixth set of formulas _v parameters in the expression;

    among them,

    

    Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

    

    Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .
25. Apparatus according to any of claims 16 to 20 wherein:

    When c=2, the C _v =Q _v or C _v =(Q _v +T) mod N _zc Q _v =vN _cs ,

    

    among them:

    T is an integer,

    

    The value is calculated using the following formula:

    The ninth group of formulas:

    

    The tenth formula:

    

    among them,

    

    Where p ₁ is the smallest non-negative integer satisfying (p ₁ u) mod N _ZC =1;

    

    Where p ₂ is the smallest non-negative integer satisfying (p ₂ u) mod N _ZC = 2, or p ₂ = 2p ₁ mod N _ZC .
26. The device of claim 24 wherein:

    When N _cs ≤min(d _u,1 ,d _u,2 )≤N _ZC /3, and

    

    When the ninth group formula is used to calculate each parameter in the C _v formula;

    When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the tenth formula.
27. Apparatus according to any of claims 16 to 20 wherein:

    When c>2, the elements in the set S satisfy C _v =Q _v or C _v =(Q _v +T) mod N _zc ;

    Where Q _v =vN _cs ,

    

    among them:

    T is an integer,

    

    Where D is the minimum of the interval between the two sequences in the sequence a ₀ , a ₁ , a ₂ .....a _i ... a _2k ;

    Where a _i = A _i mod N _ZC ;

    Wherein, A _i is a sequence of cyclic shift value M _i;

    Wherein, M ₀ is a sequence of cyclic shift values A ₀ generated by the CAZAC root sequence, where A ₀ is a value selected from a preset set or is a preset value;

    Where M ₁ , M ₂ , ... M _k , M _k+1 , M _k+2 , ... M _2k-1 , M _2k are sequentially passed through -kΔf, -(k- 1) a sequence obtained by shifting Δf, ... -f, f, 2f, ..., (k-1) Δf, kΔf;

    Where k is a positive integer less than or equal to c.
28. Apparatus according to any of claims 16 to 20 wherein:

    When c>2, the elements in the set S satisfy C _v =Q _v or C _v =(Q _v +T) mod N _zc , where:

    T is an integer,

    

    among them,

    

    For the number of groups,

    

    For the number of cyclic shift values contained in a group, d _start is the spacing of the group.

    

    For

    

    The number of cyclic shift values remaining outside the group;

    The values of each parameter are calculated using the twelfth group formula:

    Twelfth group formula:

    

    

    

    
29. The device of claim 16 wherein:

    When N _cs ≤d _u,1 ,d _u,2 ≤N _ZC /3, the parameters in the C _v formula are calculated using the formula of the twelfth formula.
30. The device according to any one of claims 16 to 29, wherein the CAZAC sequence is a ZC sequence.

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