CN106961709B

CN106961709B - Method and device for generating access signal

Info

Publication number: CN106961709B
Application number: CN201610015599.5A
Authority: CN
Inventors: 刘锟; 鲁照华; 戴博; 夏树强; 陈宪明; 石靖; 张雯; 方惠英
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-01-11
Filing date: 2016-01-11
Publication date: 2021-08-03
Anticipated expiration: 2036-01-11
Also published as: CN106961709A; WO2017121263A1

Abstract

The invention discloses a method and a device for generating an access signal. The method comprises the following steps: the second node is from the firstM1 time frequency resource sets are selected from random access channel time frequency resources configured by the node_mM1 is an integer greater than or equal to 1, and the random access channel time-frequency resource is composed of a Set of time-frequency resources_mOr a plurality of sets of time-frequency resources_mComposition of, said Set_mComprises F sub-carriers in frequency domain and has a resource length of T in time domain_mF is an integer greater than or equal to 1, N is an integer greater than or equal to 1, and m is a time-frequency resource Set_mNumber of (1), m starts with 1; the second node sets at the M1 sets of time-frequency resources_mAnd sending a random access signal to the first node. The access of different types of terminals is realized, so that the performance of the second node, namely the MTC UE is improved, and the access quality of the MTC UE is improved.

Description

Method and device for generating access signal

Technical Field

The present invention relates to communications technologies, and in particular, to a method and an apparatus for generating an access signal.

Background

Machine Type Communication (MTC) User terminals (User Equipment, UE) (hereinafter, MTC UE), also called Machine to Machine (M2M) User terminals, are a main application form of the internet of things at present. Several technologies applicable to the cellular-level internet of things are disclosed in 3GPP technical report TR45.820V200, of which NB-IoT technology is most attractive. Considering that the number of user communication devices supported in the internet of things is very large, the number of supported terminal types may be very large, for example, there are terminals that support only a single subcarrier baseband processing capability and terminals that can support multiple subcarrier baseband processing capabilities. How the base station can guarantee that various types of terminals can successfully access the system, the NB-IoT technology currently lacks an effective solution.

Disclosure of Invention

In order to solve the above technical problem, the present invention provides a method and an apparatus for generating an access signal, so as to solve the access problem of different types of terminals.

In order to achieve the object of the present invention, the present invention provides a method for generating an access signal, including:

the second node selects M1 sets of time-frequency resources from the time-frequency resources of the random access channel configured by the first node_mM1 is an integer greater than or equal to 1, and the random access channel time-frequency resource is composed of a Set of time-frequency resources_mOr a plurality of sets of time-frequency resources_mComposition of, said Set_mComprises F sub-carriers in frequency domain and has a resource length of T in time domain_mF is an integer greater than or equal to 1, N is an integer greater than or equal to 1, and m is a time-frequency resource Set_mNumber of (1), m starts with 1;

the second node sets at the M1 sets of time-frequency resources_mAnd sending a random access signal to the first node.

Further, the method also comprises the following steps:

determining the Set of the time-frequency resource Set according to the parameters_mTime domain start position StartingSet of_mThe parameter comprises at least one of: set_m(m 1) time domain start position StartingSet₁、Set_mTime domain resource length T_mTwo adjacent Set_mTime domain interval T of_Interval、Set_mOffset of time domain start position_m。

Further, the method also comprises the following steps:

the parameter is set in a system message sent by the first node, or set to a predefined configuration.

Further, the method also comprises the following steps:

each of the Set_mCorresponding time domain resource length T_mThe same; or

Each of the Set_mOffset of time domain start position_mThe same is true.

Further, the Set of time-frequency resources is determined according to the parameters_mTime domain start position StartingSet of_mThe method comprises the following steps:

by the formula StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_mDetermining said StartingSet_m。

Further, the random access signal includes: the second node selects a random access sequence from a set of random access sequences and generates a signal from the random access sequence according to a predefined rule.

Further, the method also comprises the following steps:

when the sending of the random access signal needs to occupy a plurality of subcarriers simultaneously in a frequency domain, the subcarrier interval is delta f, the random access sequence is a Zadoff-Chu sequence (ZC sequence for short), wherein the length of the ZC sequence is N_ZC。

Further, the method also comprises the following steps:

the random access signal comprises at least one or a combination of the following:

cyclic Prefix (CP), guard interval (GT), time domain sequence.

Further, the method also comprises the following steps:

the subcarrier spacing Δ f comprises at least one of:

1250Hz，625Hz，312.5Hz，468.75Hz，937.5Hz，500Hz。

further: the Set_mThe occupied bandwidth includes at least one of:

60kHz，90kHz，120kHz，150kHz，180kHz。

further, the method also comprises the following steps: when the subcarrier spacing delta f is 1250Hz, N_ZCThe value is at least one of:

the Set_mThe occupied bandwidth is 60kHz, N_ZCThe value is at least one of: 31, 37, 41, 43; or

The Set_mThe occupied bandwidth is 90kHz, N_ZCThe value is at least one of: 53, 59, 61, 67; or

The Set_mThe occupied bandwidth is 120kHz, N_ZCThe value is at least one of: 71, 73, 79, 83, 89; or

The Set_mThe occupied bandwidth is 150kHz, N_ZCThe value is at least one of: 101, 103, 107, 109, 113; or

The Set_mThe occupied bandwidth is 180kHz, N_ZCThe value is at least one of: 127, 131, 137, 139.

Further, the method also comprises the following steps: when the subcarrier spacing delta f is 625Hz, the N_ZCThe value is at least one of the following;

the Set_mThe occupied bandwidth is 60kHz, N_ZCThe value is at least one of: 71, 73, 79, 83, 89; or

The Set_mThe occupied bandwidth is 90kHz, N_ZCThe value is at least one of: 127, 131, 137, 139; or

The Set_mThe occupied bandwidth is 120kHz, N_ZCThe value is at least one of: 167, 173, 179, 181, 191; or

The Set_mThe occupied bandwidth is 150kHz, N_ZCThe value is at least one of: 223, 227, 229, 233, 239; or

The Set_mThe occupied bandwidth is 180kHz, N_ZCThe value is at least one of: 269, 271, 277, 281, 283.

Further, the method also comprises the following steps: when the subcarrier spacing delta f is 312.5Hz, N_ZCThe value is at least one of:

the Set_mThe occupied bandwidth is 60kHz, N_ZCThe value is at least one of: 167, 173, 179, 181, 191;or

The Set_mThe occupied bandwidth is 90kHz, N_ZCThe value is at least one of: 269, 271, 277, 281, 283; or

The Set_mThe occupied bandwidth is 120kHz, N_ZCThe value is at least one of: 359, 367, 373, 379, 383; or

The Set_mThe occupied bandwidth is 150kHz, N_ZCThe value is at least one of: 457, 461, 463, 467, 479; or

The Set_mThe occupied bandwidth is 180kHz, N_ZCThe value is at least one of: 547, 557, 563, 569, 571.

Further, the method also comprises the following steps: when the subcarrier spacing delta f is 500Hz, N_ZCThe value is at least one of:

the Set_mThe occupied bandwidth is 60kHz, N_ZCThe value is at least one of: 101, 103, 107, 108, 109, 113; or

The Set_mThe occupied bandwidth is 90kHz, N_ZCThe value is at least one of: 157, 163, 167, 173, 179; or

The Set_mThe occupied bandwidth is 120kHz, N_ZCThe value is at least one of: 223, 227, 229, 233, 239; or

The Set_mThe occupied bandwidth is 150kHz, N_ZCThe value is at least one of: 271, 277, 281, 283, 293; or

The Set_mThe occupied bandwidth is 180kHz, N_ZCThe value is at least one of: 337, 347, 349, 353, 359.

Further, the method also comprises the following steps:

the second node sets from the time-frequency resource Set_mSelecting N subsets of time frequency resources

As a transmission resource of the random access signal, the Set of time-frequency resources_mComprising P subsets of time-frequency resources

The subset of time frequency resources

Occupying a subcarrier with index f or a subchannel with index f in the frequency domain, and occupying a time period with index n, Set, in the time domain_mThe time domain is divided into N time segments, and the time segment with the index of N has the length of T_n，1≤f≤F，1≤n≤N。

Further, P ═ N × F;

further, the F subcarriers are continuously distributed in the frequency domain, or discretely distributed.

Further, two adjacent subcarriers of the F subcarriers are spaced by Q subcarrier spacing Δ F in the frequency domain, or two adjacent subchannels of the F subchannels are spaced by Q subchannel bandwidth in the frequency domain.

Further, the N time segments are distributed continuously in the time domain, or distributed discretely.

Further, N is an integer multiple of F.

Further, the second node sets from the time-frequency resource Set_mSelecting N subsets of time frequency resources

At least one of the following is satisfied:

n number of

The corresponding frequency domain subcarrier index is to contain Set_mMiddle F1(F1 is less than or equal to F) subcarrier indexes;

n number of

Corresponding to different time periods

The indexes of the sub-carriers are different;

n number of

The corresponding subchannel index is to contain Set_mF1(F1 is less than or equal to F) sub-channel indexes;

n number of

Corresponding to different time periods

The sub-channel index where it is located is different.

Further, the method also comprises the following steps:

the random access sequence is a Zadoff-Chu sequence (ZC sequence for short), wherein the length of the ZC sequence is N_ZC(ii) a Or

The random access sequence has a length of N_ZCThe orthogonal code word sequence or the quasi-orthogonal code word sequence of (a); or

The random access sequence is configured by the first type of node.

Further, the method also comprises the following steps: the second node is at

Transmits the random access sequence on K symbols in

Wherein K is N_zcAnd is and

is an expression of the kth sampling point in the random access sequence, and the symbol time domain length is T_kSaid

The number of symbols contained in (1) is equal to or greater than K.

Further, the method also comprises the following steps: the secondNode is at

Transmit the sequence over K symbols in

The symbol time domain length is T_kWherein, in the step (A),

，K＝J×N_zc，

random access sequence, i.e. of length N, selected for said second type of node_ZCA sequence with index d in the random access sequence set;

is a configured parameter. J is an integer of 1 or more; the above-mentioned

The number of symbols contained in (1) is equal to or greater than K.

Further, the method also comprises the following steps:

at the Set_mOf different

Internally transmitted

The same; or

At different said Set_mTransmitted by

The same is true.

Further, the method also comprises the following steps:

The random access sequence is configured by the first node.

Further, the method also comprises the following steps: the second node is at

Transmit the sequence over K symbols in

Wherein the content of the first and second substances,

wherein the content of the first and second substances,

a sequence with index d in the random access sequence set selected for the second type node

The nth sample point value;

is a configured parameter. J is an integer of 1 or more; the above-mentioned

The number of symbols contained in (1) is greater than or equal to K;

further, the method also comprises the following steps:

the second node is at

Is transmitted on a symbol with index k

The corresponding time domain is expressed as

Wherein T is more than or equal to 0 and less than or equal to T_k，T_kIs composed of

When the time domain sampling interval is T_sWhen the temperature of the water is higher than the set temperature,

the corresponding time domain is expressed as

1≤k≤K，

The number of time domain sampling points; the second node is

Transmit the sequence over K symbols in

Is Seq ═ S [1 ═ S],S[2],…,S[K]}。

Further, the second node is at

Except for transmitting Seq ═ S [1],S[2],…,S[K]Besides, at least one of the following is sent:

a cyclic prefix CP, a guard interval GT,

wherein the cyclic prefix CP ═ { S [ K-G +1], …, S [ K ] }, where G denotes a number of time domain symbols included in the CP; or

The cyclic prefix CP is ═ { Seq [ I-L +1],…,Seq[I]Where L denotes a time-domain sample interval T included in the CP_sI is the time-domain sampling interval T comprised in said time-domain signal Seq_sThe number of the cells.

Further, the subset of time-frequency resources

Occupying a subcarrier interval with index f or a bandwidth of a subchannel with index f in a frequency domain as at least one of the following:

15kHz，7.5kHz，5kHz，3.75kHz，2.5kHz，1.25kHz，1kHz。

the present invention also provides a device for sending a random access signal, including:

a selecting module, configured to select M1 sets of time-frequency resources from random access channel time-frequency resources configured by the first node_mM1 is an integer greater than or equal to 1, and the random access channel time-frequency resource is composed of a Set of time-frequency resources_mOr a plurality of sets of time-frequency resources_mComposition of, said Set_mComprises F sub-carriers in frequency domain and has a resource length of T in time domain_mF is an integer greater than or equal to 1, N is an integer greater than or equal to 1, and m is a time-frequency resource Set_mNumber of (1), m starts with 1;

a sending module, configured to send the Set of M1 time-frequency resources by the second node_mAnd sending a random access signal to the first node.

Further, the method also comprises the following steps: a determination module;

the determining module is configured to determine the Set of time-frequency resources according to a parameter_mTime domain start position StartingSet of_mThe parameter comprises at least one of: set_m(m 1) time domain start position StartingSet₁、Set_mTime domain resource length T_mTwo adjacent Set_mTime domain interval T of_Interval、Set_mOffset of time domain start position_m。

Further, the parameter is set in a system message sent by the first node, or set to a predefined configuration.

Further, each of the Set_mCorresponding time domain resource length T_mThe same; or

Each of the Set_mOffset of time domain start position_mThe same is true.

Further, the determining module is further configured to determine the start by using the formula StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_mDetermining said StartingSet_m。

Further, the subcarrier spacing is Δ f, and the random access sequence is a Zadoff-Chu sequence (ZC sequence for short), where the ZC sequence length is N_ZCAnd when the random access signal needs to occupy a plurality of subcarriers simultaneously in the frequency domain.

Further, the random access signal includes at least one or a combination of the following:

cyclic Prefix (CP), guard interval (GT), time domain sequence.

Further, the selecting module is further configured to select the Set from the Set of time-frequency resources_mSelecting N subsets of time frequency resources

The subset of time frequency resources

Further, the method also comprises the following steps: the P is N and F;

Further, N is an integer multiple of F.

Further, the Set of time-frequency resources is selected_mSelecting N subsets of time frequency resources

At least one of the following is satisfied:

n number of

n number of

Corresponding to different time periods

The indexes of the sub-carriers are different;

n number of

n number of

Corresponding to different time periods

The sub-channel index where it is located is different.

Further, the method also comprises the following steps:

The random access sequence is configured by the first type of node.

Further, the sending module is also used for sending the message to the receiving module

Transmits the random access sequence on K symbols in

Wherein K is N_zcAnd is and

The number of symbols contained in (1) is equal to or greater than K.

Transmit the sequence over K symbols in

The symbol time domain length is T_kWherein, in the step (A),

，K＝J×N_zc，

as said second type nodeSelected random access sequence, i.e. of length N_ZCA sequence with index d in the random access sequence set;

is a configured parameter. J is an integer of 1 or more; the above-mentioned

The number of symbols contained in (1) is equal to or greater than K.

Further, the method also comprises the following steps:

at the Set_mOf different

Internally transmitted

The same; or

At different said Set_mTransmitted by

The same is true.

Further, the method also comprises the following steps:

The random access sequence is configured by the first node.

Transmit the sequence over K symbols in

Wherein the content of the first and second substances,

wherein the content of the first and second substances,

The nth sample point value;

is a configured parameter. J is an integer of 1 or more; the above-mentioned

The number of symbols contained in (1) is greater than or equal to K;

Is transmitted on a symbol with index k

The corresponding time domain is expressed as

the corresponding time domain is expressed as

1≤k≤K，

The number of time domain sampling points; the second node is

Transmit the sequence over K symbols in

Is Seq ═ S [1 ═ S],S[2],…,S[K]}。

Further, the second node is at

a cyclic prefix CP, a guard interval GT,

Further, the subset of time-frequency resources

15kHz，7.5kHz，5kHz，3.75kHz，2.5kHz，1.25kHz，1kHz。

compared with the prior art, the method comprises the step that the second node selects M1 time frequency resource sets from the time frequency resources of the random access channel configured by the first node_mM1 is an integer greater than or equal to 1, and the random access channel time-frequency resource is composed of a Set of time-frequency resources_mOr a plurality of sets of time-frequency resources_mComposition of, said Set_mComprises F sub-carriers in frequency domain and has a resource length of T in time domain_mF is an integer greater than or equal to 1, N is greater than or equal toOr an integer equal to 1, m is a time-frequency resource Set_mNumber of (1), m starts with 1; the second node sets at the M1 sets of time-frequency resources_mAnd sending a random access signal to the first node. The access of different types of terminals is realized, so that the performance of the second node, namely the MTC UE is improved, and the access quality of the MTC UE is improved.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.

Fig. 1 is a flowchart illustrating a method for generating a random access signal according to an embodiment of the present invention;

FIG. 2 is a time-frequency resource Set of a method for generating a random access signal according to an embodiment of the present invention_mMiddle time domain continuous time frequency resource subset

A schematic structural diagram;

FIG. 3 is a time-frequency resource Set of a method for generating a random access signal according to an embodiment of the present invention_mMiddle time domain discontinuous time frequency resource subset

A schematic structural diagram;

FIG. 4 is a time-frequency resource subset of a method for generating a random access signal according to an embodiment of the present invention

A structural schematic diagram of a middle time domain;

FIG. 5 is a time-frequency resource subset of a method for generating a random access signal according to an embodiment of the present invention

A schematic diagram of a structure of the middle time domain signal;

FIG. 6 is a time-frequency resource subset of another embodiment of the method for generating a random access signal of the present invention

Schematic structural diagram of (a);

FIG. 7 is a time-frequency resource subset of another embodiment of the method for generating a random access signal of the present invention

A schematic diagram of a structure of the middle time domain signal;

FIG. 8 is a time-frequency resource subset of another embodiment of the method for generating a random access signal of the present invention

Schematic structural diagram of (a);

FIG. 9 is a time-frequency resource subset of another embodiment of the method for generating a random access signal of the present invention

Schematic structural diagram of (a);

fig. 10 is a schematic structural diagram of an apparatus for generating a random access signal according to an embodiment of the present invention;

fig. 11 is a schematic structural diagram of another embodiment of a random access signal generating apparatus according to the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be noted that the embodiments and features of the embodiments in the present application may be arbitrarily combined with each other without conflict.

The method for generating the random access signal provided by the embodiment of the invention can be particularly applied to the communication between MTC UE and MTC UE in the Internet. The method for generating a random access signal provided in this embodiment may be specifically executed by a device for generating a random access signal, where the device for generating a random access signal may be integrated in a device disposed in an MTC UE or separately disposed, and the device for generating a random access signal may be implemented in a software and/or hardware manner. The following describes a method and an apparatus for generating a random access signal according to the present embodiment in detail.

Fig. 1 is a flowchart illustrating a method for generating a random access signal according to an embodiment of the present invention, where as shown in fig. 1, an execution subject of the embodiment may be a second node, that is, an MTC UE, and the method for generating a random access signal according to the present invention includes:

step 101, the second node selects M1 sets of time frequency resources from the time frequency resources of the random access channel configured by the first node_m。

In this embodiment, M1 is an integer greater than or equal to 1, and the random access channel time-frequency resource is composed of a Set of time-frequency resources_mOr a plurality of sets of time-frequency resources_mComposition of, said Set_mComprises F sub-carriers in frequency domain and has a resource length of T in time domain_mF is an integer greater than or equal to 1, N is an integer greater than or equal to 1, and m is a time-frequency resource Set_mNumber of (1), m starts with 1;

it should be noted that, the random access channel resource in this embodiment has at least two implementation manners:

in a first implementation manner, the random access channel resources include M sets of time-frequency resources_mSet of the time-frequency resource Set_mThe carrier frequency domain comprises F subcarriers in the frequency domain, and the time domain comprises N time periods, wherein M is more than or equal to 1 and less than or equal to M, M is an integer more than or equal to 1, F is an integer more than or equal to 1, and N is an integer more than or equal to 1.

The second implementation manner, on the basis of the first implementation manner, may further include: the Set of time-frequency resources_mComprising P time-frequency resource unitsCollection

The subset of time frequency resources

And occupying a subcarrier with an index f in a frequency domain, and occupying one time period with an index N in a time domain for a long time, wherein f is an integer greater than or equal to 1, N is greater than or equal to 1 and less than or equal to N, and P is less than or equal to N. That is, the time-frequency resource Set in the first implementation is further Set_mDividing the time domain to obtain a time-frequency resource subset

Step 102, the second node sets the M1 sets of time-frequency resources_mAnd sending a random access signal to the first node.

In this embodiment, the second node selects M1 sets of time-frequency resources from the random access channel time-frequency resources configured by the first node_mM1 is an integer greater than or equal to 1, and the random access channel time-frequency resource is composed of a Set of time-frequency resources_mOr a plurality of sets of time-frequency resources_mComposition of, said Set_mComprises F sub-carriers in frequency domain and has a resource length of T in time domain_mF is an integer greater than or equal to 1, N is an integer greater than or equal to 1, and m is a time-frequency resource Set_mNumber of (1), m starts with 1; the second node sets at the M1 sets of time-frequency resources_mAnd sending a random access signal to the first node. The access of different types of terminals is realized, so that the performance of the second node, namely the MTC UE is improved, and the access quality of the MTC UE is improved.

On the basis of the foregoing embodiment, the random access channel resource, regardless of which implementation manner is described above, may further include:

determining a Set of time-frequency resource sets according to the parameters_m(M is more than or equal to 1 and less than or equal to M) time domain starting position StartingSet_mSaid ginsengThe number includes at least one of: set_m(m 1) time domain start position StartingSet₁、Set_mTime domain resource length T_mTwo adjacent Set_mTime domain interval T of_Interval、Set_mOffset of time domain start position_m。

It should be noted that the parameter is set in a system message sent by the first type node, or in a predefined configuration.

Further, in the above embodiment, each Set_mCorresponding time domain resource length T_mThe same; or, each of the Set_mOffset of time domain, start position_mThe same is true.

Optionally, the parameter is obtained by using the formula StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_mDetermining StartingSet_m。

It should be noted that the random access signal includes: the second node selects a random access sequence from a set of random access sequences and generates a signal from the random access sequence according to a predefined rule.

Further, on the basis of the foregoing embodiment, when the transmission of the random access signal needs to occupy multiple subcarriers simultaneously in the frequency domain, the subcarrier spacing is Δ f, and the random access sequence is a Zadoff-Chu sequence (ZC sequence for short), where the ZC sequence has a length N_ZC。

Further, on the basis of the above embodiment, the method further includes:

cyclic Prefix (CP), guard interval (GT), time domain sequence.

Further, on the basis of the above embodiment, M1 sets of time-frequency resources are selected from the random access channel time-frequency resources configured by the first node at the second node_mWherein M1 is an integer greater than or equal to 1, and the random access channel time-frequency resources are composed of a time-frequency resource setSet_mOr a plurality of sets of time-frequency resources_mComposition of, said Set_mComprises F sub-carriers in frequency domain and has a resource length of T in time domain_mF is an integer greater than or equal to 1, N is an integer greater than or equal to 1, and m is a time-frequency resource Set_mIn the scenario that m is numbered from 1, that is, in the scenario of multiple subcarriers, the method may further include:

the subcarrier spacing Δ f comprises at least one of:

1250Hz，625Hz，312.5Hz，468.75Hz，937.5Hz，500Hz。

further, on the basis of the above embodiment, the method further includes: the Set_mThe occupied bandwidth includes at least one of:

60kHz，90kHz，120kHz，150kHz，180kHz。

further, on the basis of the above embodiment, the method further includes: when the subcarrier spacing delta f is 1250Hz, N_ZCThe value is at least one of:

Further, on the basis of the above embodiment, the method further includes: when the subcarrier spacing delta f is 625Hz, the N_ZCThe value is at least one of the following;

the Set_mThe occupied bandwidth is 60kHz, N_ZCTake at least the following valuesOne of them is: 71, 73, 79, 83, 89; or

Further, on the basis of the above embodiment, the method further includes: when the subcarrier spacing delta f is 312.5Hz, N_ZCThe value is at least one of:

the Set_mThe occupied bandwidth is 60kHz, N_ZCThe value is at least one of: 167, 173, 179, 181, 191; or

Further, on the basis of the above embodiment, the method further includes: when the subcarrier spacing delta f is 500Hz, N_ZCThe value is at least one of:

the Set_mThe occupied bandwidth is 60kHz, N_ZCThe value is at least one of: 101, 103, 107, 108, 109, 113; orA

Further, on the basis of the above embodiment, the design of the time domain signal may include the following:

the random access signal is in a time-frequency resource subset

The time domain signal of (a) comprises at least one or a combination of:

cyclic prefix CP, guard interval, time domain signal.

Optionally, the time domain signal includes at least one of the following or a combination thereof:

the time domain signal is Seq ═ S [ 1]],S[2],…,S[K]And (c) the step of (c) in which,

1≤k≤K，

is the number of time domain sampling points with a time domain sampling interval of T_s，

Is composed of

In that

Expression of middle time domain, T is more than or equal to 0 and less than or equal to T_n，T_nIs composed of

The time domain length of (d); alternatively, the first and second electrodes may be,

the cyclic prefix CP is ═ { S [ K-G +1],…,S[K]Where G denotes a time domain length T included in the CP_nThe number of (2); alternatively, the first and second electrodes may be,

Further, on the basis of the above embodiment, the method may further include:

the radius R of the cell supported by the random access signal is

Alternatively, the first and second electrodes may be,

the radius R of the cell supported by the random access signal is

And L is the length of the CP.

Further, on the basis of the above embodiment, the method may further include:

when in use

When the random access signal supports the cell radius R, the radius R is the maximum; or

When in use

When the cell radius R supported by the random access signal is maximum.

Further, on the basis of the above embodiment, the method further includes:

said N is_ZC61 or 67; or

Set_mOccupies 90kHz bandwidth; or

The cyclic prefix CP length is 0.1ms or 0.3 ms.

Fig. 3 is a time-frequency resource Set according to an embodiment of the method for generating a random access signal of the present invention_mMiddle time domain discontinuous time frequency resource subset

A schematic structural diagram, as shown in fig. 2, when the random access signal is sent while only occupying 1 subcarrier or one channel at the same time, or when the random access signal is sent while only occupying 1 subcarrier on a frequency domain resource, or when the random access signal is sent by using a single subcarrier, that is, the random access channel resource is a single subcarrier, that is, the random access channel resource includes M sets of time-frequency resources Set_mSet of the time-frequency resource Set_mF subcarriers are included in the frequency domain, N time periods are included in the time domain, and the Set of time-frequency resources is_mComprising P subsets of time-frequency resources

The subset of time frequency resources

And occupying a subcarrier with an index F or a subchannel with an index F in a frequency domain, and occupying one time period with an index N in a time domain for a long time, wherein F is an integer greater than or equal to 1, N is greater than or equal to 1 and less than or equal to N, P is less than or equal to N, M is greater than or equal to 1 and less than or equal to M, M is an integer greater than or equal to 1, F is an integer greater than or equal to 1, and N is an integer greater than or equal to 1.

In this embodiment, a time slot with index n has a length of T_n(ii) a The T is_nIncluding any of the following: one frame, a plurality of frames,One subframe, a plurality of subframes, one time domain symbol length, a plurality of time domain symbol lengths, one time domain sampling interval, a plurality of time domain sampling intervals.

Further, on the basis of the above embodiment, the T_nIs the inverse of the subcarrier spacing.

Optionally, P ═ N × F;

further, on the basis of the above embodiment, the F subcarriers are continuously distributed in the frequency domain, or are discretely distributed.

It should be noted that, the F subcarriers are discretely distributed in the frequency domain; two adjacent subcarriers in the F subcarriers are spaced by Q subcarriers Δ F in the frequency domain, or two adjacent subcarriers in the F subchannels are spaced by Q subchannel bandwidths in the frequency domain.

Further, on the basis of the above embodiment, the N time periods are continuously distributed in the time domain, or are distributed discretely.

Preferably, N is an integer multiple of F.

At least one of the following is satisfied:

n number of

n number of

Corresponding to different time periods

The indexes of the sub-carriers are different;

n number of

n number of

Corresponding to different time periods

The sub-channel index where it is located is different.

Further, on the basis of the above embodiment, the method further includes:

when the random access signal is sent, only 1 subcarrier or one channel is occupied at the same time, or when the random access signal is sent, only 1 subcarrier is occupied on frequency domain resources, or when the random access signal is sent by adopting a single subcarrier.

The random access sequence is configured by the first type of node.

Further, on the basis of the above embodiment, the method further includes: the second node is at

Transmits the random access sequence on K symbols in

Wherein K is N_zcAnd is and

The number of symbols contained in (1) is equal to or greater than K.

Transmit the sequence over K symbols in

The symbol time domain length is T_kWherein, in the step (A),

，K＝J×N_zc，

is a configured parameter. J is an integer of 1 or more; the above-mentioned

The number of symbols contained in (1) is equal to or greater than K.

Further, on the basis of the above embodiment, the method further includes:

at the Set_mOf different

Internally transmitted

The same; or

At different said Set_mTransmitted by

The same is true.

Optionally, the random access sequence is a Zadoff-Chu sequence (ZC sequence for short), where the ZC sequence has a length of N_ZC(ii) a Or

The random access sequence is configured by the first node.

Transmit the sequence over K symbols in

Wherein the content of the first and second substances,

wherein the content of the first and second substances,

The nth sample point value;

is a configured parameter. J is an integer of 1 or more; the above-mentioned

The number of symbols contained in (1) is greater than or equal to K;

further, on the basis of the above embodiment, the method further includes:

the second node is at

Index of k in the symbolSending sequence

The corresponding time domain is expressed as

the corresponding time domain is expressed as

1≤k≤K，

The number of time domain sampling points; the second node is

Transmit the sequence over K symbols in

Is Seq ═ S [1 ═ S],S[2],…,S[K]}。

And (5) a structural diagram of a middle time domain. As shown in fig. 4, on the basis of the above embodiment, the second node is

a cyclic prefix CP, a guard interval GT,

The cyclic prefix CP is ═ { Seq [ I-L +1],…,Seq[I]Where L denotes a time-domain sample interval T included in the CP_sI is the time-domain sampling interval T comprised in said time-domain signal Seq_sThe number of the cells. Further, on the basis of the above embodiment, at least one of the following may be further included:

corresponding to different time periods

The sub-carriers are different;

time periods of adjacent indices correspond

The sub-carriers are different;

p number of

Has F1 sub-carrier positions, wherein F1 time periods of adjacent indexes correspond to

The sub-carriers in which they are located are different.

Preferably, the value of P is an integer multiple of F1.

Further comprising:

the parameters are set in system messages sent by the first type of nodes or in predefined configurations.

Further, on the basis of the above embodiment, the method may further include:

each of the Set_mCorresponding time domain resource length T_mThe same; or

Each of the Set_mOffset of time domain start position_mThe same is true.

As shown in fig. 4, the random access signal is in a subset of time-frequency resources

The time domain signal of (a) comprises at least one or a combination of:

cyclic prefix CP, guard interval, time domain signal.

Optionally, the method further includes: the time domain signal comprises at least one or a combination of:

1≤k≤K，

Is composed of

In that

Further, on the basis of the above embodiment, the method may further include:

the radius R of the cell supported by the random access signal is

Alternatively, the first and second electrodes may be,

the radius R of the cell supported by the random access signal is

And L is the length of the CP.

Further, on the basis of the above embodiment, the method further includes:

when in use

When in use

When the cell radius R supported by the random access signal is maximum.

Further, on the basis of the above embodiment, the method further includes:

said N is_ZC61 or 67; or

Set_mOccupies 90kHz bandwidth; or

The cyclic prefix CP length is 0.1ms or 0.3 ms.

Further, on the basis of the above embodiment, the method further includes:

the random access signal is in a time-frequency resource subset

Of the sub-carriers with index f

The same is true, K is more than or equal to 1 and less than or equal to K.

It is noted that

Any one of the following rules is satisfied:

wherein the content of the first and second substances,

is composed of

Conjugation of (1); or

Wherein k is more than or equal to 1 and less than or equal to J multiplied by C,

is a sequence with index d in the orthogonal code word sequence set or quasi-orthogonal code word sequence set with length C,

is composed of

A variable is sent on the subcarrier with the middle index f, and J is an integer which is more than or equal to 1; or

Wherein k is more than or equal to 1 and less than or equal to J multiplied by L,

is a sequence with index d in the set of length L Zadoff-Chu sequences,

is composed of

Middle ropeF, J is an integer greater than or equal to 1;

further, on the basis of the above embodiments, any one or a combination of the following items is also included:

the value of L is prime number; or

When the subcarrier interval of the random access channel resource is 15kHz, L is 13 or 17; or

Different sets of time-frequency resources_mTransmitted by

The same is true.

For example, in the time-frequency resource Set_mComprising P subsets of time-frequency resources

The subset of time frequency resources

The method includes the following generation modes of the random access signal, that is, the embodiments 1 to 9, in a scene where the subcarrier with the index f is occupied in the frequency domain and the time period with the length occupied by the index n in the time domain.

Examples 1,

And (3) a schematic structure diagram of the middle time domain signal.

As shown in fig. 5, in the wireless communication system, the subcarrier spacing Δ f of the system configured random access channel is 15KHz, and the time domain symbol length is equal to

I.e. 66.7us (microseconds).

The terminal 1 transmits a random access signal through a random access channel. Wherein, the random access channel resource selected by the terminal 1 is taken from M (M is more than or equal to 1)Time-frequency resource Set_mWherein M is more than or equal to 1 and less than or equal to M. Set_mComprises 4 subcarriers in the frequency domain, has a length of 4ms in the time domain, and comprises 4 time segments, each of which has a length of 15 time domain symbols, i.e., T_n＝1ms。Set_mIncluding 16 subsets of time-frequency resources

As shown in figure 5 of the drawings,

occupying 1 subcarrier on a frequency domain, wherein the index is f; the time domain occupies a time period, and the index is n.

The random access channel resource selected by the terminal 1 is Set_mIn the middle of 4

Corresponding to different time periods

Different in subcarrier index, in this embodiment, terminal 1 selects

Random access signal transmitted by terminal 1

Consists of a Cyclic Prefix (CP), a Time domain signal (Sequence) and a Guard interval (GT), as shown in fig. 4, wherein GT is not necessarily each

Are configured.

In this embodiment, 1 Time domain symbol (66.7us) is configured as a Cyclic Prefix (CP), and 1 Time domain symbol (66.7us) is configured as a Guard interval (Guard Time), so that the maximum cell radius that can be supported by a random access signal is according to a formula

Calculated, wherein Q is Set_mA subcarrier spacing, in this embodiment Q ═ 1; t is_sFor the sent time domain sampling interval, L is the time domain sampling point number corresponding to CP, then T_sX L66.7 us; c is the speed of light, c is 3 × 10⁸M/s; the supported cell radius Rmax

The middle time domain symbol 1 serves as a CP resource, and the time domain symbols 2-15 serve as time domain signal (Sequence) resources.

The middle time domain symbol 1 is used as CP resource, the time domain symbols 2-14 are used as time domain signal (Sequence) resource, the time domain symbol 15 is used as GT resource

Terminal 1 being allocated

The subcarrier f transmits a modulation symbol of

K_nIs the number of time domain symbols as time domain signal (Sequence) resources in time period n;

further, K_nA modulation symbol

The same;

further, in the above-mentioned case,

is expressed as

Wherein T is more than or equal to 0 and less than T_k，T_kIs a time domain symbol length;

further, when

The time domain sample interval of transmission is T_sWhen the temperature of the water is higher than the set temperature,

wherein T is more than or equal to 0 and less than or equal to T-1,

definition of

The terminal 1 is at

The expression of the time domain signal (Sequence) in the transmitted random access signal is

Random access signal transmitted by terminal 1

Cyclic prefix of (1) is

Examples 2,

Schematic structural diagram of (1). As shown in fig. 6, in the wireless communication system, a base station configures a random access channel time-frequency resource, where the random access channel time-frequency resource is composed of one or more time-frequency resource sets (the time-frequency resource Set is referred to as Set)_m) The components of the composition are as follows,wherein m is a time-frequency resource Set_mM starts from 1. Set_mThe frequency domain comprises 2 subcarriers, the subcarrier interval delta f is 15KHz, the time domain length is 2ms, the frequency domain comprises 2 time periods, and each time period is 15 time domain symbols, namely T_nEach time domain symbol length is equal to 66.7us (microseconds), 1 ms. Set_mIncluding 4 subsets of time frequency resources

As shown in figure 6 of the drawings,

the method comprises the steps of occupying 1 subcarrier with an index of f in a frequency domain, occupying a time period with an index of n in a time domain. Determining a Set of time-frequency resource sets according to the following formula_m(M is not less than 1 and not more than M) start position information, StartingSet_m：

StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_m

Wherein the content of the first and second substances,

Set_m(m 1) the time domain start position is StartingSet₁；

Set_mTime domain resource length of T_m；

Two adjacent Set_mHas a time domain interval of T_Interval；

Set_mOffset of time domain start position is Offset_m；

Further, the parameters are configured in the system message or adopt the predefined configuration by the base station

Further, different sets_mCorresponding time domain resource length T_mThe same;

further, different sets_mOffset of time domain start position_mThe same;

the terminal 1 selects M1 sets of time-frequency resources from the configured time-frequency resources of the random access channel_mWherein M1 is an integer greater than or equal to 1.

Terminal device1 in the above-mentioned M1 sets of time-frequency resources_mSending random access signals;

the random access channel resource selected by the terminal 1 is Set_mOccupies 2 in

Corresponding to different time periods

Different in subcarrier index, in this embodiment, terminal 1 selects

Random access signal transmitted by terminal 1

Are configured.

Terminal 1 being allocated

The subcarrier f transmits a modulation symbol of

further, K_nA modulation symbol

The same;

further, in the above-mentioned case,

is expressed as

further, when

wherein T is more than or equal to 0 and less than or equal to T-1,

definition of

The terminal 1 is at

Random access signal transmitted by terminal 1

Cyclic prefix of (1) is

Examples 3,

And (3) a schematic structure diagram of the middle time domain signal. As shown in fig. 7, in the wireless communication system, the subcarrier spacing Δ f of the system configured random access channel is 15KHz, and the time domain symbol length is equal to

I.e. 66.7us (microseconds).

The terminal 1 transmits a random access signal through a random access channel. Wherein, the random access channel resource selected by the terminal 1 is taken from M (M is more than or equal to 1) time frequency resource sets_mWherein M is more than or equal to 1 and less than or equal to M. Set_mComprises 2 sub-carriers in frequency domain, has a time domain length of 2ms, and comprises 2 time segments, each of which has a length of 15 time domain symbols, i.e. T_n＝1ms。Set_mIncluding 4 subsets of time frequency resources

As shown in figure 7 of the drawings,

occupying 1 subcarrier on a frequency domain, wherein the index is f; the method comprises the steps of occupying one time period in the time domain, wherein the index is n, and the different time periods are distributed discretely in the time domain.

Corresponding to different time periods

Different in subcarrier index, in this embodiment, terminal 1 selects

Random access signal transmitted by terminal 1

Are configured.

Terminal 1 being allocated

The subcarrier f transmits a modulation symbol of

further, K_nA modulation symbol

The same;

further, in the above-mentioned case,

is expressed as

further, when

wherein t is more than or equal to 0 and less than or equal toT-1，

Definition of

The terminal 1 is at

Random access signal transmitted by terminal 1

Cyclic prefix of (1) is

Examples 4,

Schematic structural diagram of (1). As shown in fig. 8, in the wireless communication system, the subcarrier spacing Δ f of the system configured random access channel is 3.75KHz, and the time domain symbol length is equal to

I.e., 267us (microseconds).

The terminal 1 transmits a random access signal through a random access channel. Wherein, the random access channel resource selected by the terminal 1 is taken from M (M is more than or equal to 1) time frequency resource sets_mWherein M is more than or equal to 1 and less than or equal to M. Set_mComprises 2 sub-carriers in frequency domain, has a time domain length of 8ms, and comprises 2 time segments, each of which has a length of 15 time domain symbols, i.e. T_n＝4ms。Set_mIncluding 4 subsets of time frequency resources

As shown in figure 8 of the drawings,

Corresponding to different time periods

Different in subcarrier index, in this embodiment, terminal 1 selects

Random access signal transmitted by terminal 1

Are configured.

In this embodiment, 1 Time domain symbol (267us) is configured as a Cyclic Prefix (CP), and 1 Time domain symbol (267us) is configured as a Guard interval (Guard Time), so that the maximum cell radius that can be supported by a random access signal is according to a formula

Calculated, wherein Q is Set_mA subcarrier spacing, in this embodiment Q ═ 1; t is_sFor the sent time domain sampling interval, L is the time domain sampling point number corresponding to CP, then T_s267 us; c is the speed of light, c is 3 × 10⁸M/s; the supported cell radius RmaxIs largely composed of

Terminal 1 being allocated

The subcarrier f transmits a modulation symbol of

further, K_nA modulation symbol

The same;

further, in the above-mentioned case,

is expressed as

further, when

wherein T is more than or equal to 0 and less than or equal to T-1,

definition of

The terminal 1 is at

Random access signal transmitted by terminal 1

Cyclic prefix of (1) is

Examples 5,

In a wireless communication system, the subcarrier spacing delta f of a random access channel configured by the system is 3.75KHz, and the time domain symbol length is equal to that of the random access channel

I.e., 267us (microseconds).

As shown in figure 8 of the drawings,

Corresponding to different time periods

Different in subcarrier index, in this embodiment, terminal 1 selects

Random access signal transmitted by terminal 1

Are configured.

In this embodiment, the random access signal has a Cyclic Prefix (CP) length of 266.8us, and the maximum cell radius R that such CP length can support is

Wherein Q is Set_mA subcarrier spacing, in this embodiment Q ═ 1; f is the number of subcarriers occupied by the random access signal when it is sent, where F is 2 in this embodiment; t is_sFor the sent time domain sampling interval, L is the time domain sampling point number corresponding to CP, then T_sXl 266.8 us; c is the speed of light, c is 3 × 10⁸M/s; the supported cell radius Rmax

Terminal 1 being allocated

The subcarrier f transmits a modulation symbol of

further, K_nA modulation symbol

The same;

further, in the above-mentioned case,

is expressed as

further, when

wherein T is more than or equal to 0 and less than or equal to T-1,

definition of

The terminal 1 is at

Random access signal transmitted by terminal 1

Cyclic prefix of (1) is

Examples 6,

This example modifies the Sequence expression based on examples 1-5, i.e. using conjugate symmetry

Terminal 1 being allocated

The subcarrier f transmits a modulation symbol of

further, in the above-mentioned case,

wherein

Is composed of

In a common vesselA yoke;

example 7,

This embodiment is based on embodiments 1-5 and only modifies the Sequence expression, i.e. it uses code division multiple access (CDM) multiplexing.

Terminal 1 being allocated

The subcarrier f transmits a modulation symbol of

K_nIs the time in time period n as a time domain signal (Sequence) resource. The number of domain symbols;

further, K_nA modulation symbol

The following rules are satisfied:

wherein K is more than or equal to 1 and less than or equal to K_n，

Is an orthogonal code word sequence or quasi-orthogonal code word sequence with the length of C and the index of d;

is composed of

A determined modulation symbol transmitted on the intermediate frequency domain subcarrier f.

Example 8,

Schematic structural diagram of (1). As shown in fig. 9, in the wireless communication system, the time domain sampling frequency of the system configuration is1.92MHz, time domain sample interval

The subcarrier spacing of the random access channel is 15KHz, and the time domain symbol length is equal to

A T_sI.e. 66.7 us.

The terminal 1 transmits a random access signal through a random access channel. Wherein, the random access channel resource selected by the terminal 1 is taken from M (M is more than or equal to 1) time frequency resource sets_mWherein M is more than or equal to 1 and less than or equal to M. Set_mComprises 2 sub-carriers in frequency domain, has a length of 6ms in time domain, and comprises 4 time segments, Set_mIncluding 8 subsets of time frequency resources

As shown in fig. 8.

With adjacent time periods corresponding

The subcarrier index of (a) is different. In this embodiment, as shown in fig. 9, the terminal 1 selects

Random access signal transmitted by terminal 1

Consists of a Cyclic Prefix (CP) and a time domain signal (Sequence). Wherein, the time domain signal (Sequence) occupies 17 time domain symbols (length 66.7us), and the CP is 4 time domain symbols. Random access signal transmitted by terminal 1

Consists of a Cyclic Prefix (CP), a Time domain signal (Sequence), and a Guard interval (GT). The time domain signal (Sequence) occupies 17 time domain symbols (length 66.7us), CP is 4 time domain symbols, and GT is 4 time domain symbols.

The terminal 1 randomly selects a sequence y from a Zadoff-Chu sequence set (ZC sequence set for short) with the length of 17_u,v(k) As a random access sequence; wherein ZC sequence sets are composed of different [ u, v ]]Corresponding to y_u,v(k) And (4) forming.

Wherein

y_u,v(k) Is y_u(k) According to the formula y_u,v(k)＝y_u((k+C_v)modN_ZC) Generating; n is a radical of_CSNamely the size of the cyclic shift, configured by the base station;

y_u(k) is a root sequence of a ZC sequence according to the formula

0≤k≤N_ZC-1 generation. Where u is the index of the root sequence, 1. ltoreq. u.ltoreq.N_zc-1 and u is an integer; n is a radical of_ZCIs the length of the ZC sequence, N in this example_ZC＝17。

The random access signal has a time domain signal (Sequence) in

The expression form in (1)

Random access sequence y selected by terminal 1_u,v(k) And is obtained according to the following formula:

wherein T is more than or equal to 0 and less than T_k，T_kIs a time domain symbol length; k is more than or equal to 1 and less than or equal to 17

Further, when the time domain sample interval of the transmission is T_sWhen the temperature of the water is higher than the set temperature,

wherein T is more than or equal to 0 and less than or equal to T-1,

1≤k≤17

definition of

The terminal 1 is at

Random access signal transmitted by terminal 1

Cyclic prefix of (1) is

Further, different Set_mRandom access sequence y selected by the middle terminal 1_u,v(k) The same;

examples 9,

In a wireless communication system, the time domain sampling frequency of the system configuration is 1.92MHz, and then the time domain sampling interval

A T_sI.e., 66.7us。

The terminal 1 transmits a random access signal through a random access channel. Wherein, the random access channel resource selected by the terminal 1 is taken from M (M is more than or equal to 1) time frequency resource sets_mWherein M is more than or equal to 1 and less than or equal to M. Set_mThe frequency domain comprises 2 sub-carriers, the time domain length is 6ms, and the total number of the sub-carriers is 11520T_sIncluding 4 time periods, Set_mIncluding 8 subsets of time frequency resources

As shown in fig. 9.

With adjacent time periods corresponding

Random access signal transmitted by terminal 1

Consists of a Cyclic Prefix (CP) and a time domain signal (Sequence). Wherein the time domain signal (Sequence) occupies 17 × 128T_sCP is 563T_s. Random access signal transmitted by terminal 1

Consists of a Cyclic Prefix (CP), a Time domain signal (Sequence), and a Guard interval (GT). Wherein the time domain signal (Sequence) occupies 17 × 128T_sCP is 563T_sGT is 564 Ts_s。

The terminal 1 is from one lengthA sequence y is randomly selected from a Zadoff-Chu sequence set (ZC sequence set for short) of 17_u,v(k) As a random access sequence; wherein ZC sequence sets are composed of different [ u, v ]]Corresponding to y_u,v(k) And (4) forming.

Wherein

y_u(k) is a root sequence of a ZC sequence according to the formula

The random access signal has a time domain signal (Sequence) in

The expression form in (1)

wherein t is more than or equal to 0 and less than or equal to 127, k is more than or equal to 1 and less than or equal to 17

Definition of

The terminal 1 is at

Random access signal transmitted by terminal 1

The cyclic prefix CP in (1) is

The last 563 elements in;

example 10

In a wireless communication system, a base station configures a random access channel time-frequency resource, wherein the random access channel time-frequency resource consists of one or more time-frequency resource sets (the time-frequency resource Set is marked as Set)_m) Wherein m is a Set of time-frequency resources_mM starts from 1. Set_mThe frequency domain comprises 2 random access sub-channels, and the bandwidth of each random access sub-channel is 15 KHz; set_mLength T in time domain_mWherein, N time segments are included, and each time segment has a length of T_n. Define Set_mInner time-frequency resource subset

To occupy 1 subchannel (subchannel index f) in the frequency domain, a time period (index n) is occupied in the time domain.

Terminal 1 selects M1 sets of time-frequency resources Set in the above manner_mThe method for sending the random access signal comprises the following specific steps:

step 1: terminal 1 at Set_mIn the middle of N

Used as the transmission resource of the random access signal, wherein, only one random access sub-channel is selected in each time period, and the adjacent time periods correspond to

Are different.

Step 2: the terminal 1 randomly selects a sequence y from a Zadoff-Chu sequence set (ZC sequence set for short) with the length of K_u,v(k) As a random access sequence; wherein ZC sequence sets are composed of different [ u, v ]]Corresponding to y_u,v(k) And (4) forming.

Wherein

y_u(k) is a root sequence of a ZC sequence according to the formula

0≤k≤N_ZC-1 generation. Where u is the index of the root sequence, 1. ltoreq. u.ltoreq.N_zc-1 and u is an integer; n is a radical of_ZCIs the length of the ZC sequence, N in this example_ZC＝K。

And step 3: selecting a random access sequence y_u,v(k) As cyclic prefix CP, i.e. terminal 1 needs to be in

Transmits the CP and the random access sequence y on (K + L) time domain symbols of_u,v(k)。

And 4, step 4: terminal 1 selection

Middle and first (K + L) time domain symbols, transmitting the CP and the random access sequence y_u,v(k)。

In addition to the present embodiment, Set_mEach random access sub-channel bandwidth may be further configured to be at least one of:

7.5kHz，5kHz，3.75kHz，2.5kHz，1.25kHz，1kHz，

for example, the random access channel resources include M sets of time-frequency resources Set_mSet of the time-frequency resource Set_mThe method comprises the following random access signal generation mode, namely, a multi-carrier sending random access signal, under the scene that F sub-carriers are included in a frequency domain and N time periods are included in a time domain. Namely example 10 to example 11.

Examples X1,

In a wireless communication system, a base station configures a random access channel time-frequency resource, wherein the random access channel time-frequency resource consists of one or more time-frequency resource sets (the time-frequency resource Set is marked as Set)_m) Wherein m is a Set of time-frequency resources_mM starts from 1. Set in this example_mOccupies 90kHz in the frequency domain, comprises 72 subcarriers and has a subcarrier spacing delta f_RAIs 1.25KHz, Set_mTime domain length of (T)_mIs 1 ms. (ii) a

Terminal 1 selects M1 sets of time-frequency resources Set in the above manner_mSending random access signals;

determining the time-frequency resource Set configured by the base station according to the following formula_mStart position information of (1), startngset_m：

StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_m

Wherein the content of the first and second substances,

Set_m(m 1) the time domain start position is StartingSet₁；

Set_mTime domain resource length of T_m；

Two adjacent Set_mHas a time domain interval of T_Interval；

Set_mOffset of time domain start position is Offset_m；

Further, different sets_mCorresponding time domain resource length T_mThe same;

further, different sets_mOffset of time domain start position_mThe same;

the random access signal transmitted by the terminal 1 includes the following 3 parts, as shown in fig. 4:

a Cyclic Prefix (CP);

a guard interval (GT);

time domain sequence (sequence);

the random access sequence selected by the terminal 1 and the random access signal is generated according to a predefined rule. Wherein, the terminal 1 randomly selects a sequence y from a Zadoff-Chu sequence set (ZC sequence set for short) with the length of 61_u,v(n) as a random access sequence; wherein ZC sequence sets are composed of different [ u, v ]]Corresponding to y_u,v(n) is prepared.

Wherein

y_u,v(n) is y_u(n) th cyclic shift sequence according to the formula y_u,v(n)＝y_u((n+C_v)modN_ZC) Generating; n is a radical of_CSNamely the size of the cyclic shift, configured by the base station;

y_u(n) is root sequence of ZC sequence according to formula

0≤n≤N_ZC-1 generation. Where u is the index of the root sequence, 1. ltoreq. u.ltoreq.N_zc-1 and u is an integer; n is a radical of_ZCIs the length of the ZC sequence, N in this example_ZC＝61

Wherein the generating the random access signal according to the predefined rule comprises at least one of:

step 1: random access sequence y to be selected by terminal 1_u,v(n) calculating according to the following formula to obtain x_u,v(k)

Step 2: x is to be_u,v(k) Mapping to Set_mN in (1)_ZCOn one subcarrier, γ describes Set_mThe starting position index of the occupied sub-carrier. At Δ f_RAFor interval pair uplink frequency domain resource BW^ULAre divided and numbered as

The value range of gamma is

Is used to describe Set_mIn x_u,v(k) The offset of the occupied starting sub-carrier with respect to gamma;

and step 3: the expression s (t) of the time domain sequence (sequence) is obtained according to the following process:

wherein:

β is a scaling factor, configured by the base station;

f_offsetan offset in the frequency domain;

wherein T is more than or equal to 0 and less than or equal to T-1,

s (t) is

Repeat R times, i.e.

And 4, step 4: the Cyclic Prefix (CP) is the last L time domain sampling points in s (t), wherein L is the number of time domain sampling points included in the CP;

and 5: a guard interval (GT) of

G is the number of time domain sampling points included in GT;

in this example, γ is 0, BW^UL＝180kHz，β＝1，

f_offset＝7.5kHz，T_s·L＝0.1ms，T_sG0.1 ms and R1, terminal 1 generates a random access signal and sets it at step 1 to 4_mIs sent.

In addition to the present embodiment of the present invention,

can also be configured as 6;

examples X2,

In a wireless communication system, a base station configures a random access channel time-frequency resource, wherein the random access channel time-frequency resource consists of one or more time-frequency resource sets (the time-frequency resource Set is marked as Set)_m) Wherein m is a Set of time-frequency resources_mM starts from 1. Set in this example_mOccupies 90kHz in the frequency domain, comprises 72 subcarriers and has a subcarrier spacing delta f_RAIs 1.25KHz, Set_mTime domain length of (T)_mIs 2 ms. (ii) a

a Cyclic Prefix (CP);

a guard interval (GT);

time domain sequence (sequence);

Wherein

y_u(n) is root sequence of ZC sequence according to formula

The value range of gamma is

wherein:

β is a scaling factor, configured by the base station;

f_offsetan offset in the frequency domain;

wherein T is more than or equal to 0 and less than or equal to T-1,

s (t) is

Repeat R times, i.e.

and 5: a guard interval (GT) of

G is the number of time domain sampling points included in GT;

in this example, γ is 0, BW^UL＝180kHz，β＝1，

f_offset＝7.5kHz，T_s·L＝0.2ms，T_sG0.2 ms and R2, terminal 1 generates a random access signal and sets it at step 1-4_mIs sent.

In addition to the present embodiment of the present invention,

can also be configured as 6;

examples X3,

In a wireless communication system, a base station configures a random access channel time-frequency resource, wherein the random access channel time-frequency resource consists of one or more time-frequency resource sets (the time-frequency resource Set is marked as Set)_m) Wherein m is a Set of time-frequency resources_mM starts from 1. Set in this example_mOccupies 90kHz in the frequency domain, comprises 72 subcarriers and has a subcarrier spacing delta f_RAIs 1.25KHz, Set_mTime domain length of (T)_mIs 3 ms. (ii) a

a Cyclic Prefix (CP);

a guard interval (GT);

time domain sequence (sequence);

Wherein

y_u(n) is root sequence of ZC sequence according to formula

The value range of gamma is

wherein:

β is a scaling factor, configured by the base station;

f_offsetan offset in the frequency domain;

wherein T is more than or equal to 0 and less than or equal to T-1,

s (t) is

Repeat R times, i.e.

and 5: a guard interval (GT) of

G is the number of time domain sampling points included in GT;

in this example, γ is 0, BW^UL＝180kHz，β＝1，

f_offset＝7.5kHz，T_s·L＝0.3ms，T_sG0.3 ms and R3, terminal 1 generates a random access signal according to steps 1 to 4, and at Set_mIs sent.

In addition to the present embodiment of the present invention,

can also be configured as 6;

example X4

Set according to the protocol of examples X1-X3_mMay be further configured to at least one of:

60kHz，90kHz，120kHz，150kHz，180kHz。

and when Set_mOccupying bandwidth of 60kHz, N_ZCThe value is at least one of: 31, 37, 41, 43

And when Set_mOccupying bandwidth of 90kHz, N_ZCThe value is at least one of: 53, 59, 67,

and when Set_mOccupying bandwidth of 120kHz, N_ZCThe value is at least one of: 71, 73, 79, 83, 89

And when Set_mOccupying bandwidth of 150kHz, N_ZCThe value is at least one of: 101, 103, 107, 109, 113

And when Set_mOccupying the bandwidth of 180kHz, N_ZCThe value is at least one of: 127, 131, 137, 139

Example X5

In a wireless communication system, a base station configures a random access channel time-frequency resource, wherein the random access channel time-frequency resource consists of one or more time-frequency resource sets (the time-frequency resource Set is marked as Set)_m) Wherein m is a Set of time-frequency resources_mM starts from 1. Set in this example_mOccupies 90kHz in the frequency domain, comprises 144 subcarriers and has a subcarrier spacing delta f_RAIs 625Hz, Set_mWhen (2) is in contact withField length T_mIs 2.5 ms. (ii) a

StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_m

Wherein the content of the first and second substances,

Set_m(m 1) the time domain start position is StartingSet₁；

Set_mTime domain resource length of T_m；

Two adjacent Set_mHas a time domain interval of T_Interval；

Set_mOffset of time domain start position is Offset_m；

Further, different sets_mCorresponding time domain resource length T_mThe same;

further, different sets_mOffset of time domain start position_mThe same;

a Cyclic Prefix (CP);

a guard interval (GT);

time domain sequence (sequence);

the random access sequence selected by the terminal 1 and the random access signal is generated according to a predefined rule. Wherein, the terminal 1 randomly selects a sequence y from a Zadoff-Chu sequence set (ZC sequence set for short) with the length of 127_u,v(n) as a random access sequence;wherein ZC sequence sets are composed of different [ u, v ]]Corresponding to y_u,v(n) is prepared.

Wherein

y_u(n) is root sequence of ZC sequence according to formula

0≤n≤N_ZC-1 generation. Where u is the index of the root sequence, 1. ltoreq. u.ltoreq.N_zc-1 and u is an integer; n is a radical of_ZCIs the length of the ZC sequence, N in this example_ZC＝127

The value range of gamma is

wherein:

β is a scaling factor, configured by the base station;

f_offsetan offset in the frequency domain;

wherein T is more than or equal to 0 and less than or equal to T-1,

s (t) is

Repeat R times, i.e.

and 5: a guard interval (GT) of

G is the number of time domain sampling points included in GT;

in this example, γ is 0, BW^UL＝180kHz，β＝1，

f_offsetAt 7.5kHz, R1, terminal 1 generates a random access signal according to steps 1-4, and at Set_mIs sent.

In addition to the present embodiment of the present invention,

may also be configured as 9;

in addition to the present embodiment, Set_mMay be further configured to at least one of:

60kHz，90kHz，120kHz，150kHz，180kHz。

and when Set_mOccupying bandwidth of 60kHz, N_ZCThe value is at least one of: 71, 73, 79, 83, 89

And when Set_mOccupying bandwidth of 90kHz, N_ZCThe value is at least one of: 131, 137, 139

And when Set_mOccupying bandwidth of 120kHz, N_ZCThe value is at least one of: 167, 173, 179181, 191

And when Set_mOccupying bandwidth of 150kHz, N_ZCThe value is at least one of: 223, 227, 229233, 239

And when Set_mOccupying the bandwidth of 180kHz, N_ZCThe value is at least one of: 269, 271, 277281, 283

Example X6

In a wireless communication system, a base station configures time-frequency resources of a random access channel, wherein the time-frequency resources of the random access channel comprise one or more time-frequency resourcesSet (time-frequency resource Set is marked as Set)_m) Wherein m is a Set of time-frequency resources_mM starts from 1. Set in this example_mOccupies 90kHz in the frequency domain, comprises 288 sub-carriers and is separated by delta f_RAIs 312.5Hz, Set_mTime domain length of (T)_mIs 4 ms. (ii) a

StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_m

Wherein the content of the first and second substances,

Set_m(m 1) the time domain start position is StartingSet₁；

Set_mTime domain resource length of T_m；

Two adjacent Set_mHas a time domain interval of T_Interval；

Set_mOffset of time domain start position is Offset_m；

Further, different sets_mCorresponding time domain resource length T_mThe same;

further, different sets_mOffset of time domain start position_mThe same;

a Cyclic Prefix (CP);

a guard interval (GT);

time domain sequence (sequence);

the random access sequence selected by the terminal 1 and the random access signal is generated according to a predefined rule. Wherein, the terminal 1 randomly selects a sequence y from a Zadoff-Chu sequence set (ZC sequence set for short) with the length of 269_u,v(n) as a random access sequence; wherein ZC sequence sets are composed of different [ u, v ]]Corresponding to y_u,v(n) is prepared.

Wherein

y_u(n) is root sequence of ZC sequence according to formula

0≤n≤N_ZC-1 generation. Where u is the index of the root sequence, 1. ltoreq. u.ltoreq.N_zc-1 and u is an integer; n is a radical of_ZCIs the length of the ZC sequence, N in this example_ZC＝269

The value range of gamma is

wherein:

β is a scaling factor, configured by the base station;

f_offsetan offset in the frequency domain;

wherein T is more than or equal to 0 and less than or equal to T-1,

s (t) is

Repeat R times, i.e.

and 5: a guard interval (GT) of

G is the number of time domain sampling points included in GT;

in this example, γ is 0, BW^UL＝180kHz，β＝1，

In addition to the present embodiment of the present invention,

may also be configured as 9;

60kHz，90kHz，120kHz，150kHz，180kHz。

and when Set_mOccupying bandwidth of 60kHz, N_ZCThe value is at least one of: 167, 173, 179181, 191

And when Set_mOccupying bandwidth of 90kHz, N_ZCThe value is at least one of: 269, 271, 277281, 283

And when Set_mOccupying bandwidth of 120kHz, N_ZCThe value is at least one of: 359, 367, 373379, 383

And when Set_mOccupying bandwidth of 150kHz, N_ZCThe value is at least one of: 457, 461, 463467, 479

And when Set_mThe occupied bandwidth is 180kHz,N_ZCthe value is at least one of: 547, 557, 563569, 571

Example X7

In a wireless communication system, a base station configures a random access channel time-frequency resource, wherein the random access channel time-frequency resource consists of one or more time-frequency resource sets (the time-frequency resource Set is marked as Set)_m) Wherein m is a Set of time-frequency resources_mM starts from 1. Set in this example_mOccupies 90kHz in the frequency domain, comprises 180 subcarriers and has a subcarrier spacing delta f_RAIs 500Hz, Set_mTime domain length of (T)_mIs 2.5 ms. (ii) a

StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_m

Wherein the content of the first and second substances,

Set_m(m 1) the time domain start position is StartingSet₁；

Set_mTime domain resource length of T_m；

Two adjacent Set_mHas a time domain interval of T_Interval；

Set_mOffset of time domain start position is Offset_m；

Further, different sets_mCorresponding time domain resource length T_mThe same;

further, different sets_mOffset of time domain start position_mThe same;

a Cyclic Prefix (CP);

a guard interval (GT);

time domain sequence (sequence);

the random access sequence selected by the terminal 1 and the random access signal is generated according to a predefined rule. Wherein, the terminal 1 randomly selects a sequence y from a Zadoff-Chu sequence set (ZC sequence set for short) with the length of 157_u,v(n) as a random access sequence; wherein ZC sequence sets are composed of different [ u, v ]]Corresponding to y_u,v(n) is prepared.

Wherein

y_u(n) is root sequence of ZC sequence according to formula

0≤n≤N_ZC-1 generation. Where u is the index of the root sequence, 1. ltoreq. u.ltoreq.N_zc-1 and u is an integer; n is a radical of_ZCIs the length of the ZC sequence, N in this example_ZC＝157

The value range of gamma is

wherein:

β is a scaling factor, configured by the base station;

f_offsetan offset in the frequency domain;

wherein T is more than or equal to 0 and less than or equal to T-1,

s (t) is

Repeat R times, i.e.

and 5: a guard interval (GT) of

G is the number of time domain sampling points included in GT;

in this example, γ is 0, BW^UL＝180kHz，β＝1，

In addition to the present embodiment of the present invention,

may also be configured as 11;

60kHz，90kHz，120kHz，150kHz，180kHz。

and when Set_mOccupying bandwidth of 60kHz, N_ZCThe value is at least one of: 101, 103, 107, 109, 113.

And when Set_mOccupying bandwidth of 90kHz, N_ZCThe value is at least one of: 157, 163, 167, 173, 179.

And when Set_mOccupying bandwidth of 120kHz, N_ZCThe value is at least one of: 223, 227, 229, 233, 239.

And when Set_mOccupying bandwidth of 150kHz, N_ZCThe value is at least one of: 271, 277, 281, 283, 293.

And when Set_mOccupying the bandwidth of 180kHz, N_ZCThe value is at least one of: 337, 347, 349353, 359.

Fig. 10 is a schematic structural diagram of an embodiment of a random access signal generating apparatus according to the present invention, and as shown in fig. 10, the random access signal transmitting apparatus of the embodiment includes: a selection module 1001 and a sending module 1002. Wherein the content of the first and second substances,

a selecting module 1001, configured to select M1 sets of time-frequency resources from time-frequency resources of a random access channel configured by a first node_mM1 is an integer greater than or equal to 1, and the random access channel time-frequency resource is composed of a Set of time-frequency resources_mOr a plurality of sets of time-frequency resources_mComposition of, said Set_mComprises F sub-carriers in frequency domain and has a resource length of T in time domain_mF is an integer greater than or equal to 1, N is an integer greater than or equal to 1, and m is a time-frequency resource Set_mNumber of (1), m starts with 1;

a sending module 1002, configured to enable the second node to Set the M1 sets of time-frequency resources_mAnd sending a random access signal to the first node.

In this embodiment, the second node selects M1 sets of time-frequency resources from the random access channel time-frequency resources configured by the first node_mM1 is an integer greater than or equal to 1, and the random access channel time-frequency resource is composed of a Set of time-frequency resources_mOr a plurality of sets of time-frequency resources_mComposition of, said Set_mComprises F sub-carriers in frequency domain and has a resource length of T in time domain_mF is an integer greater than or equal to 1, N is an integer greater than or equal to 1, and m is a time-frequency resource Set_mNumber of (1), m starts with 1; the second node sets at the M1 sets of time-frequency resources_mSending a random to the first nodeAnd accessing the signal. The access of different types of terminals is realized, so that the performance of the second node, namely the MTC UE is improved, and the access quality of the MTC UE is improved.

Fig. 11 is a schematic structural diagram of another embodiment of the apparatus for generating a random access signal of the present invention, as shown in fig. 11, on the basis of the foregoing embodiment, the present embodiment may further include: a determination module 1003;

the determining module 1003 is configured to determine the Set of time-frequency resources according to a parameter_mTime domain start position StartingSet of_mThe parameter comprises at least one of: set_m(m 1) time domain start position StartingSet₁、Set_mTime domain resource length T_mTwo adjacent Set_mTime domain interval T of_Interval、Set_mOffset of time domain start position_m。

Further, on the basis of the above embodiment, the parameter is set in a system message sent by the first node, or is set to a predefined configuration.

Further, in the above embodiment, each Set_mCorresponding time domain resource length T_mThe same; or

Each of the Set_mOffset of time domain start position_mThe same is true.

Further, on the basis of the foregoing embodiment, the determining module 1003 is further configured to determine the start according to the formula StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_mDetermining said StartingSet_m。

Further, on the basis of the foregoing embodiment, the random access signal includes: the second node selects a random access sequence from a set of random access sequences and generates a signal from the random access sequence according to a predefined rule.

Further, on the basis of the foregoing embodiment, when the transmission of the random access signal needs to occupy multiple subcarriers simultaneously in the frequency domain, the subcarrier spacing is Δ f, and the random access signal is received at the same timeThe incoming sequence is a Zadoff-Chu sequence (ZC sequence for short), wherein the length of the ZC sequence is N_ZC。

Further, on the basis of the foregoing embodiment, the random access signal includes at least one of the following or a combination thereof:

cyclic Prefix (CP), guard interval (GT), time domain sequence.

Further, on the basis of the foregoing embodiment, the subcarrier spacing Δ f includes at least one of:

1250Hz，625Hz，312.5Hz，468.75Hz，937.5Hz，500Hz。

further, on the basis of the above embodiment, the Set_mThe occupied bandwidth includes at least one of:

60kHz，90kHz，120kHz，150kHz，180kHz。

further, in the above embodiment, when the subcarrier spacing Δ f is 1250Hz, N is_ZCThe value is at least one of:

Further, in the above embodiment, when the subcarrier spacing Δ f is 625Hz, the N is set_ZCThe value is at least one of the following;

the Set_mThe occupied bandwidth is 60kHz, N_ZCThe value is at least one of: 71, 73, 79, 83, 89;or

Further, in the above embodiment, when the subcarrier spacing Δ f is 312.5Hz, N is_ZCThe value is at least one of:

Further, in the above embodiment, when the subcarrier spacing Δ f is 500Hz, N is_ZCThe value is at least one of:

Further, on the basis of the foregoing embodiment, the selecting module 101 is further configured to select the Set from the time-frequency resource Set_mSelecting N subsets of time frequency resources

The subset of time frequency resources

Further, on the basis of the above embodiment, the method further includes: wherein P is N x F;

further, on the basis of the above embodiment, the F subcarriers are continuously distributed in the frequency domain, or discretely distributed.

Further, on the basis of the foregoing embodiment, two adjacent subcarriers of the F subcarriers are spaced by Q subcarrier spacing Δ F in the frequency domain, or two adjacent subchannels of the F subchannels are spaced by Q subchannel bandwidth in the frequency domain.

Further, on the basis of the above embodiment, the N time periods are continuously distributed in the time domain, or are discretely distributed.

Further, on the basis of the above embodiment, N is an integer multiple of F.

Further, on the basis of the above embodiment, the Set is Set from the time-frequency resource Set_mSelecting N subsets of time frequency resources

At least one of the following is satisfied:

n number of

n number of

Corresponding to different time periods

The indexes of the sub-carriers are different;

n number of

n number of

Corresponding to different time periods

The sub-channel index where it is located is different.

Further, on the basis of the above embodiment, the method further includes:

the random access sequence is a Zadoff-Chu sequence(abbreviated as ZC sequence) wherein the ZC sequence has a length of N_ZC(ii) a Or

The random access sequence is configured by the first type of node.

Further, on the basis of the above embodiments, the sending module 102 is further configured to send a request to the mobile terminal

Transmits the random access sequence on K symbols in

Wherein K is N_zcAnd is and

The number of symbols contained in (1) is equal to or greater than K.

Transmit the sequence over K symbols in

The symbol time domain length is T_kWherein, in the step (A),

，K＝J×N_zc，

is a configured parameter. J is an integer of 1 or more; the above-mentioned

The number of symbols contained in (1) is equal to or greater than K.

Further, on the basis of the above embodiment, the method further includes:

at the Set_mOf different

Internally transmitted

The same; or

At different said Set_mTransmitted by

The same is true.

Further, on the basis of the above embodiment, the method further includes:

The random access sequence is configured by the first node.

Transmit the sequence over K symbols in

Wherein the content of the first and second substances,

wherein the content of the first and second substances,

The nth sample point value;

is a configured parameter. J is an integer of 1 or more; the above-mentioned

The number of symbols contained in (1) is greater than or equal to K;

Is transmitted on a symbol with index k

The corresponding time domain is expressed as

the corresponding time domain is expressed as

1≤k≤K，

The number of time domain sampling points; the second node is

Transmit the sequence over K symbols in

Is Seq ═ S [1 ═ S],S[2],…,S[K]}。

Further, on the basis of the above embodiment, the second node is

a cyclic prefix CP, a guard interval GT,

Further, based on the above embodiment, the time-frequency resource subset

15kHz，7.5kHz，5kHz，3.75kHz，2.5kHz，1.25kHz，1kHz。

in this embodiment, access of different types of terminals is realized, so that the performance of the second node, that is, the MTC UE, is improved, and the access quality of the MTC UE is improved.

Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A method for transmitting a random access signal, comprising:

the second node sets at the M1 sets of time-frequency resources_mSending a random access signal to the first node;

according to the parameter by the formula StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_mDetermining StartingSet_mWherein the Set of time-frequency resources is Set_mTime domain start position StartingSet of_m，Set_m(m 1) time domain start position StartingSet₁、Set_mTime domain resource length T_mTwo adjacent Set_mTime domain interval T of_Interval、Set_mOffset of time domain start position_m；

Wherein the random access signal comprises: the second node selects a random access sequence from a random access sequence set, and generates a signal by the random access sequence according to a predefined rule;

the random access sequence is a Zadoff-Chu sequence, wherein the ZC sequence is longDegree of N_ZC；

Or, the random access sequence has a length of N_ZCThe orthogonal code word sequence or the quasi-orthogonal code word sequence of (a);

alternatively, the random access sequence is configured by the first node;

the second node is at

Transmit the sequence over K symbols in

The symbol time domain length is T_kWherein, in the step (A),

Figure DEST_PATH_FDA00027433986500000514

，K＝J×N_zc，

random access sequence, i.e. of length N, selected for said second node_ZCA sequence with index d in the random access sequence set;

is a configured parameter, J is an integer greater than or equal to 1; the above-mentioned

The number of symbols contained in (1) is greater than or equal to K; alternatively, the first and second electrodes may be,

the second node is at

Transmit the sequence over K symbols in

Wherein the content of the first and second substances,

wherein the content of the first and second substances,

one sequence with index d in random access sequence set selected for the second node

The nth sample point value;

The number of symbols contained in (1) is equal to or greater than K.

2. The method of claim 1, further comprising:

3. The method of claim 2, further comprising:

each of the Set_mCorresponding time domain resource length T_mThe same; or

Each of the Set_mOffset of time domain start position_mThe same is true.

4. The method according to any of claims 2-3, wherein said determining said Set of time-frequency resources according to parameters_mTime domain start position StartingSet of_mThe method comprises the following steps:

5. The method according to any one of claims 1-3, further comprising:

when the sending of the random access signal needs to occupy a plurality of subcarriers simultaneously in a frequency domain, the subcarrier interval is delta f, the random access sequence is a Zadoff-Chu sequence, and the length of the ZC sequence is N_ZC。

6. The method of claim 1, wherein the random access signal comprises at least one of the following or a combination thereof:

cyclic prefix CP, guard interval GT, time domain sequence.

7. The method of claim 5, wherein the subcarrier spacing Δ f comprises at least one of:

1250Hz，625Hz，312.5Hz，468.75Hz，937.5Hz，500Hz。

8. the method of claim 5, wherein the Set is performed by a computer_mThe occupied bandwidth includes at least one of:

60kHz，90kHz，120kHz，150kHz，180kHz。

9. the method of claim 5, wherein N is 1250Hz when the subcarrier spacing Δ f is greater than N_ZCThe value is at least one of:

The Set_mThe occupied bandwidth is 150kHz, N_ZCThe value is at least one of: 101, 103, 107, 109,113; or

10. The method of claim 5, further comprising: when the subcarrier spacing delta f is 625Hz, the N_ZCThe value is at least one of the following;

11. The method of claim 5, wherein N is 312.5Hz for the subcarrier spacing Δ f_ZCThe value is at least one of:

The Set_mThe occupied bandwidth is 150kHz, N_ZCTake on the following valuesAt least one of: 457, 461, 463, 467, 479; or

12. The method of claim 5, wherein N is N when the subcarrier spacing Δ f is 500Hz_ZCThe value is at least one of:

13. The method according to any one of claims 1-3, further comprising:

The subset of time frequency resources

14. The method of claim 13, wherein P ═ N ═ F.

15. The method of claim 13, wherein the F subcarriers are distributed continuously or discretely in a frequency domain.

16. The method of claim 13, wherein two adjacent of the F subcarriers are separated by Q subcarrier spacings af in the frequency domain, or wherein two adjacent of the F subchannels are separated by Q subchannel bandwidths in the frequency domain.

17. The method of claim 13, wherein the N time segments are distributed continuously in the time domain or distributed discretely in the time domain.

18. The method of claim 13, wherein N is an integer multiple of F.

19. The method according to claim 13, wherein the second node sets from the Set of time-frequency resources_mSelecting N subsets of time frequency resources

At least one of the following is satisfied:

n number of

The corresponding frequency domain subcarrier index is to contain Set_mF1 subcarrier indexes, wherein F1 is less than or equal to F;

n number of

Corresponding to different time periods

The indexes of the sub-carriers are different;

n number of

The corresponding subchannel index is to contain Set_mF1 subchannel indexes, wherein F1 is less than or equal to F;

n number of

Corresponding to different time periods

The sub-channel index where it is located is different.

20. The method of claim 1, further comprising: the second node is at

Transmits the random access sequence on K symbols in

Wherein K is N_zcAnd is and

Middle ladleThe number of symbols contained is equal to or greater than K.

21. The method of claim 1 or 20, further comprising:

at the Set_mOf different

Internally transmitted

The same; or

At different said Set_mTransmitted by

The same is true.

22. The method of any one of claims 1 or 20, further comprising:

the second node is at

Is transmitted on a symbol with index k

The corresponding time domain is expressed as

the corresponding time domain is expressed as

The number of time domain samples is, then, the second node is

Transmit the sequence over K symbols in

Is Seq ═ S [1 ═ S],S[2],…,S[K]}。

23. The method of claim 22, wherein the second node is at

a cyclic prefix CP, a guard interval GT,

24. The method of claim 13, wherein the subset of time-frequency resources is a subset of time-frequency resources

15kHz，7.5kHz，5kHz，3.75kHz，2.5kHz，1.25kHz，1kHz。

25. a transmission apparatus of a random access signal, applied to a second node, comprising:

a sending module, configured to send the Set of M1 time-frequency resources by the second node_mSending a random access signal to the first node;

a determination module for determining the parameter by the formula StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_mDetermining StartingSet_mWherein the Set of time-frequency resources is Set_mTime domain start position StartingSet of_m，Set_m(m 1) time domain start position StartingSet₁、Set_mTime domain resource length T_mTwo adjacent Set_mTime domain interval T of_Interval、Set_mOffset of time domain start position_m；

The random access signal includes: a signal generated by selecting a random access sequence from a set of random access sequences from the second node and by the random access sequence according to a predefined rule;

the random access sequence is a Zadoff-Chu sequence, wherein the length of the ZC sequence is N_ZC(ii) a Or

The random access sequence is configured by the first node;

transmission moduleAlso used in

Transmit the sequence over K symbols in

The symbol time domain length is T_kWherein, in the step (A),

，K＝J×N_zc，

a sending module for sending

Transmit the sequence over K symbols in

Wherein the content of the first and second substances,

wherein the content of the first and second substances,

The nth sample point value;

The number of symbols contained in (1) is equal to or greater than K.

26. The apparatus of claim 25, wherein the parameter is set in a system message sent by the first node or set to a predefined configuration.

27. The apparatus of claim 26, wherein each said Set is a Set_mCorresponding time domain resource length T_mThe same; or

Each of the Set_mOffset of time domain start position_mThe same is true.

28. The apparatus according to any of claims 25-27, wherein the determining module is further configured to determine the target signal by using the formula StartingSet_m＝StartingSet₁+(T_m+T_Interval)×(m-1)+Offset_mDetermining said StartingSet_m。

29. The apparatus according to any of claims 25-27, wherein the subcarrier spacing is Δ f, and wherein the random access sequence is a Zadoff-Chu sequence (ZC sequence for short), and wherein the ZC sequence length is N_ZCAnd when the random access signal needs to occupy a plurality of subcarriers simultaneously in the frequency domain.

30. The apparatus of claim 28, wherein the random access signal comprises at least one of the following or a combination thereof:

cyclic prefix CP, guard interval GT, time domain sequence.

31. The apparatus according to any of claims 25-27, wherein the selecting module is further configured to select from the Set of time-frequency resources_mSelecting N subsets of time frequency resources

The subset of time frequency resources

32. The apparatus of claim 31, further comprising: and P is N F.

33. The apparatus of claim 31, wherein the F subcarriers are distributed continuously or discretely in a frequency domain.

34. The apparatus of claim 31, wherein two adjacent of the F subcarriers are separated by Q subcarrier spacings af in the frequency domain, or wherein two adjacent of the F subchannels are separated by Q subchannel bandwidths in the frequency domain.

35. The apparatus of claim 31, wherein the N time segments are distributed continuously or discretely in the time domain.

36. The apparatus of claim 31, wherein N is an integer multiple of F.

37. The apparatus of claim 31, wherein the Set from the Set of time-frequency resources_mSelecting N subsets of time frequency resources

At least one of the following is satisfied:

n number of

n number of

Corresponding to different time periods

The indexes of the sub-carriers are different;

n number of

n number of

Corresponding to different time periods

The sub-channel index where it is located is different.

38. According toThe apparatus as recited in claim 25, wherein said means for sending is further configured to send the message at

Transmits the random access sequence on K symbols in

Wherein K is N_zcAnd is and

The number of symbols contained in (1) is equal to or greater than K.

39. The apparatus of claim 25 or 38, further comprising:

at the Set_mOf different

Internally transmitted

The same; or

At different said Set_mTransmitted by

The same is true.

40. The apparatus of any one of claims 25 or 38, wherein the sending module is further configured to send the message to the ue

Is transmitted on a symbol with index k

The corresponding time domain is expressed as

the corresponding time domain is expressed as

The number of time domain sampling points; the second node is

Transmit the sequence over K symbols in

Is Seq ═ S [1 ═ S],S[2],…,S[K]}。

41. The apparatus of claim 40, wherein the second node is at

a cyclic prefix CP, a guard interval GT,

42. The apparatus of claim 31, wherein the subset of time-frequency resources is configured as a subset of a set of channels of a radio frequency spectrum

15kHz，7.5kHz，5kHz，3.75kHz，2.5kHz，1.25kHz，1kHz。