WO2021017632A1

WO2021017632A1 - Signal transmission method and device, communication node, and storage medium

Info

Publication number: WO2021017632A1
Application number: PCT/CN2020/094129
Authority: WO
Inventors: 刘娟; 赵亚军; 杨玲; 林伟
Original assignee: 中兴通讯股份有限公司
Priority date: 2019-07-26
Filing date: 2020-06-03
Publication date: 2021-02-04
Also published as: CN111092691A

Abstract

The present application proposes a signal transmission method and device, a communication node, and a storage medium. The signal transmission method comprises: determining a sequence configuration, wherein the configuration comprises at least one of the following: the number of sequences, the length of a sequence, and a phase rotation angle of an element in a sequence; generating sequences according to the configuration; and mapping the sequences to a channel resource, and transmitting same.

Description

Signal sending method, device, communication node and storage medium

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 201910682812.1 on July 26, 2019. The entire content of the application is incorporated into this application by reference.

Technical field

This application relates to the field of communications, for example, to a signal sending method, device, communication node and storage medium.

Background technique

In the system design of the fifth generation mobile communication technology (5G, 5th Generation Mobile Networks or 5th Generation Wireless Systems), especially for unlicensed frequency bands, due to the requirement for signals to occupy the frequency domain bandwidth, new sequences or transmission sequences or The sequence of channel transmission or the transmission structure of signal transmission. How to make a new design have an appropriate Cubic Metric (CM) value, there is still no clear method.

Summary of the invention

The embodiment of the present application provides a signal sending method, including:

Determining a configuration manner of the sequence, the configuration manner including at least one of the number of sequences, the length of the sequence, and the phase rotation angle of the elements in the sequence;

Generate a sequence according to the configuration mode;

The sequence is mapped to channel resources and sent.

An embodiment of the present application also provides a signal sending device, including:

The determining module is configured to determine the configuration mode of the sequence, the configuration mode including at least one of the number of the sequence, the length of the sequence, and the phase rotation angle of the elements in the sequence;

A generating module for generating a sequence according to the configuration mode;

The mapping and sending module is used to map the sequence to the channel resource and send it.

The embodiment of the present application also provides a signal sending communication node, including a processor and a memory;

The memory is used to store instructions;

The processor is configured to read the instruction to execute the signal sending method in any embodiment of the present application.

An embodiment of the present application also provides a storage medium that stores a computer program that, when executed by a processor, implements the signal sending method in any embodiment of the present application.

The signal transmission method provided by the embodiment of the present application uses a sequence configuration method to generate a sequence, and maps and transmits the signal, so that the new design has an appropriate CM value.

Description of the drawings

FIG. 1 is a flowchart of a signal sending method according to an embodiment of the application;

FIG. 2 is a schematic diagram of a sequence configuration according to an embodiment of the application;

FIG. 3 is a schematic diagram of another sequence configuration according to an embodiment of the application;

4 is a schematic diagram of another sequence configuration according to an embodiment of the application;

Figure 5A is a schematic diagram of the CCDF curve of the sequence CM value;

5B is a schematic diagram of a CCDF curve of a sequence of CM values according to an embodiment of the application;

5C is a schematic diagram of a CCDF curve of another sequence CM value according to an embodiment of the application;

FIG. 6 is a schematic structural diagram of a signal sending device according to an embodiment of the application;

FIG. 7 is a schematic diagram of the structure of a communication node for signal transmission according to an embodiment of the application.

Detailed ways

Hereinafter, the embodiments of the present application will be described with reference to the drawings.

An embodiment of the application proposes a method for sending a signal. FIG. 1 is a flow chart for implementing a method for sending a signal according to an embodiment of the application, including:

S11: Determine the configuration mode of the sequence, where the configuration mode includes at least one of the number of the sequence, the length of the sequence, and the phase rotation angle of the elements in the sequence.

S12: Generate a sequence according to the configuration mode.

S13: Map the sequence to channel resources and send.

The configuration method may further include: at least one of a frequency domain starting position, a frequency domain offset value, and a frequency domain interval between different sequences.

In one embodiment, any item in the configuration mode is notified by control signaling, a predefined combination is selected for the communication node, pre-stored in the communication node, triggered by control signaling, notified by a control channel, or configured by a higher layer.

In one embodiment, the phase rotation angle of the elements in the sequence is:

The phase rotation angle of an element in the sequence relative to each corresponding element in the initial sequence; or, the phase rotation angle of an element in the sequence relative to each corresponding element in another sequence, and the other sequence is the signal divided by the Any sequence other than the sequence.

In one embodiment, the initial sequence is a sequence generated according to a predetermined rule, or a sequence obtained by performing a corresponding operation on the generated sequence, or a predefined sequence.

In an embodiment, the frequency domain interval between the different sequences is:

H or 1/H resource block (RB, Resource Block), H or 1/H resource element (RE, Resource Element), H or 1/H data subcarrier or H or 1/H random access channel (RACH, Random Access Channel) sub-carrier; the H is an integer, and / represents division.

In an embodiment, the number of the sequence, the length of the sequence or the frequency domain interval between different sequences are notified by control signaling, or saved in a predefined manner or configured in the communication node.

In an implementation manner, the configuration method includes:

The number of the sequence is 2; the length of the sequence is W, where W is a positive integer; the phase rotation angle of each element in each sequence relative to each corresponding element in the initial sequence is X; the value of X is [0, 2π), the 2π is 360 degrees. The frequency domain interval between sequences is greater than or equal to zero.

In one embodiment, there is no phase difference between the two sequences.

There is no phase difference between sequences, which can mean that the phase differences between corresponding elements of the sequence are equal.

There is a phase difference between sequences, which can mean that the phase difference between corresponding elements of the sequence is not equal.

There is no phase difference between the elements in the sequence, which may mean that the phase relationship between the elements in the sequence is equal to the phase relationship between the elements in the initial sequence corresponding to the sequence.

There is a phase difference between the elements in the sequence, which may mean that the phase relationship between the elements in the sequence is not equal to the phase relationship between the elements in the initial sequence corresponding to the sequence.

In an implementation manner, the configuration method includes:

The number of the sequence is 2; the length of the sequence is W, and W is a positive integer; in the two sequences, the phase rotation angle of each element in one sequence relative to the corresponding element in the initial sequence is X, and in the other sequence The phase rotation angle of each element relative to each corresponding element in the initial sequence is Y; the X and Y are not equal, and the X and Y are values in the range of [0, 2π); the 2π is 360 Degree; the frequency domain interval between sequences is greater than or equal to 0.

In an embodiment, the Y is equal to X+π/2, X+3*π/2, X-π/2, or X-3*π/2; where π represents 180 degrees; * represents multiplication; / Means division.

In one embodiment, the phase difference between the two sequences is π/2 or 3*π/2.

In an embodiment, the frequency domain interval between the two sequences is (2^N)*M-W subcarriers, where the M and N are positive integers, and ^ represents a power.

In an embodiment, the length of the two sequences is 139, and the frequency domain interval between the two sequences is 885, where corresponding N=10, M=1, and W=139.

In an implementation manner, the configuration method includes:

The number of sequences is 4; the lengths of the sequences are all W, where W is a positive integer; in any of the sequences, the phase rotation angle of each element relative to each corresponding element in the initial sequence is the same; the frequency domain between the sequences The interval is 0 or H RBs, H REs, H data subcarriers, or H RACH subcarriers; the H is an integer.

In an embodiment, in the 4 sequences, the phase rotation angles of the elements in the first, second, third, and fourth sequences relative to the corresponding elements in the initial sequence are:

X, X+π/2, X+π/2, X; or, X, X+3*π/2, X+3*π/2, X; or, X, X-π/2, X- π/2, X; or, X, X-3*π/2, X-3*π/2, X; wherein, the X is a value in the range of [0, 2π); wherein, π means 180 degrees; * stands for multiplication, / stands for division.

In one embodiment, there is a phase difference between the 4 sequences.

In an implementation manner, the configuration method includes:

The number of sequences is 8; the lengths of the sequences are all W, where W is a positive integer; in any one of the sequences, the phase rotation angle of each element relative to each corresponding element in the initial sequence is the same; the frequency domain between the sequences The interval is greater than or equal to 0.

In an embodiment, in the 8 sequences, the elements in the first, second, third, fourth, fifth, sixth, seventh, and eighth sequences are relative The phase rotation angles of the corresponding elements in the initial sequence are:

X, X, X, X, X+π, X+π, X, X; or, X, X+π, X+π, X, X, X, X, X; or, X, X+π/ 2. X+π/2, X+π, X+π, X+π/2, X+π/2, X; or, X, X+3*π/2, X+3*π/2, X+π, X+π, X+3*π/2, X+3*π/2, X; the X is a value within the range of [0, 2π); where π means 180 degrees, * Represents multiplication and / represents division.

In one embodiment, there is a phase difference between the respective sequences.

In an implementation manner, the configuration method includes:

The number of sequences is 2; the lengths of the sequences are all W, where W is a positive integer; in any one of the sequences, the phase rotation angle of each element relative to each corresponding element in the initial sequence is the same or different; The frequency domain interval is 0, H or 1/H RB, H or 1/H RE, H or 1/H data subcarrier or H or 1/H RACH subcarrier; the H is an integer, where, / Means division.

In one embodiment, there is no phase difference between the respective sequences.

In an embodiment, the phase difference between the respective elements is any value in [0, 2π) or [0, -2π).

The phase difference between the various elements is any value among 0, π/2, π, and 3*π/2; or, the phase difference between the various elements is 0, -π/2, -π, Any value in -3*π/2.

This application adopts the following technical solutions:

A signal sending method described in this application includes the following methods and contents:

The length of the sequence W, the number of sequences Y, the rotation angle between the sequences or between the elements within the sequence is Z; the interval between the sequences is H or 1/H resource blocks (RB, Resource Block) or resource elements ( RE, Resource Element) or data sub-carrier or Random Access Channel (RACH, Random Access Channel) sub-carrier; where W, Y, H are integers, and the value of Z ranges from 0 to 360 degrees, that is, [0 degrees ,360 degrees); Z may be one value or multiple values, and the sequence at different positions may correspond to different angles; or each element of the same sequence has a different angle relative to the corresponding element in the initial sequence, or the above two A combination of situations.

The physical random access channel (PRACH, Physical Random Access Channel) subcarrier and data subcarrier spacing is 120KHz, 60KHz, 30KHz, integer multiples of 15KHz, 1/N of 15KHz, where N is a positive integer.

The length of the sequence, the number of sequences, and the frequency domain interval between different sequences can be notified through predefined or control signaling; the control signaling can be: high-level radio resource control (RRC, Radio Resource Control), resource Information block 1 (SIB1, System Information Block1) or remaining minimum system information (RMSI, Remaining Mininum System Information).

Method 1: Use two identical sequences for transmission, that is, the value of Y is 2, and there is no interval between the sequences; there is no phase difference between the sequences, there is no phase difference between the elements in the sequence, and the value of Z is 0.

Method 2: Use two segments of the same sequence for transmission with a fixed interval between the sequences; there is a certain phase difference between the sequences, and there is no phase difference between the elements within the sequence.

In one embodiment, the length of the sequence is 139, and there is a fixed interval between the sequences. The fixed interval is: 1024-139=885 subcarriers; this interval refers to the tail of one sequence relative to the head of another sequence.

In an embodiment, a certain phase difference between the two sequences is pi/2, or pi*3/2; where pi is π. For the convenience of description, in the following embodiments, pi is used instead.

In one embodiment, the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, and the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x+90 degrees; That is, [x; x+pi/2]; the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, and the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence All are x-90 degrees; that is, [x; x-pi/2]; the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, and each element of the second sequence is relative to the initial The phase rotation angles of the corresponding elements of the sequence are all x+270 degrees; that is, [x; x+pi*3/2]; the phase rotation angles of each element of the first sequence relative to the corresponding element of the initial sequence are all x, The phase rotation angle of each element of the two sequences relative to the corresponding element of the initial sequence is x-270 degrees; that is, [x; x-pi*3/2]; where the value of x is from 0 degrees to 360 degrees Any angle. The value of x is the phase value of the first sequence relative to the initial sequence at the low end of the frequency domain or the initial position of the frequency domain mapping.

The'initial sequence' is a sequence generated according to certain rules, or a sequence obtained by performing corresponding operations on the generated sequence, or a predefined sequence.

The "corresponding operation" refers to cyclic shift, etc., but is not limited to the cyclic shift operation.

Method 3: Use four segments of the same sequence to transmit, there is no interval between the sequences; there is a certain phase difference between the sequences; there is no phase difference between the elements within the sequence.

In an embodiment, the certain phase difference between the sequences is:

The phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, and the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x+90 degrees. The phase rotation angle of each element relative to the corresponding element of the initial sequence is x+90 degrees, and the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x; that is, [x; x+pi/2 ;X+pi/2;x]; The phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, and the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x+270 degrees, the phase rotation angle of each element of the third sequence relative to the corresponding element of the initial sequence is x+270 degrees, and the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x; That is, [x; x+pi*3/2; x+pi3*/2; x]; the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, and each element of the second sequence The phase rotation angle of each element relative to the corresponding element of the initial sequence is x-90 degrees, the phase rotation angle of each element of the third sequence relative to the corresponding element of the initial sequence is x-90 degrees, and each element of the fourth sequence is relative The phase rotation angle of the corresponding element in the initial sequence is x; that is, [x; x-pi/2; x-pi/2; x]; the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence All are x, the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x-270 degrees, and the phase rotation angle of each element of the third sequence relative to the corresponding element of the initial sequence is x-270 Degree, the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x; that is, [x; x-pi*3/2; x-pi3*/2; x]. Among them, the value of x is the phase value of the first sequence relative to the initial sequence at the low end of the frequency domain or the initial position of the frequency domain mapping.

Method 4: Use four segments of the same sequence to transmit, there is no interval between the sequences; there is a certain phase difference between the sequences; there is no phase difference between the elements within the sequence.

In an embodiment, the certain phase difference between the sequences is:

The phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x, and each element of the third sequence is relative The phase rotation angle of the corresponding element in the initial sequence is x, and the phase rotation angle of each element in the fourth sequence relative to the corresponding element in the initial sequence is x+180 degrees; that is, [x; x; x; x+pi] ; For example, when x=0 degrees, the rotation angles of the 4 sequences are: [0; 0; 0; pi]; when x=90 degrees, the rotation angles of the 4 sequences are: [pi/2; pi/2; pi/2; 3*pi/2]; when x=180 degrees, the rotation angles of the 4 sequences are: [pi; 0; 0; 0]; when x=270 degrees, the rotation angles of the 4 sequences are: [ 3*pi/2; 3*pi/2; 3*pi/2; pi/2].

The phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, and the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x+180 degrees. The phase rotation angle of each element relative to the corresponding element of the initial sequence is x+180 degrees, and the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x+180 degrees; that is, [x; x+ pi; x+pi; x+pi;]; For example, when x=0 degrees, the rotation angles of 4 sequences are: [0; pi; pi; pi]; when x=90 degrees, the rotation angles of 4 sequences For: [pi/2; pi/2; pi/2; 3*pi/2]; when x=180 degrees, the rotation angles of the four sequences are: [pi; 0; 0; 0]; x=270 degrees When, the rotation angles of the 4 sequences are: [3*pi/2; 3*pi/2; 3*pi/2; pi/2]; where the value of x is at the low end of the frequency domain or frequency domain mapping The initial position of the first sequence relative to the phase value of the initial sequence.

Method 5: Using 8 segments of the same ZC sequence for transmission, there is no interval between the sequences; there is a certain phase difference between the sequences; there is no phase difference between the elements within the sequence.

For example, the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x, and the phase rotation angle of each element of the third sequence is x. The phase rotation angle of each element relative to the corresponding element of the initial sequence is x, the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x, and the phase rotation angle of each element of the fifth sequence relative to the corresponding element of the initial sequence The phase rotation angle is x+180 degrees, the phase rotation angle of each element of the sixth sequence relative to the corresponding element of the initial sequence is x+180 degrees, and the phase rotation of each element of the seventh sequence relative to the corresponding element of the initial sequence The angles are all x, and the phase rotation angles of the elements of the eighth sequence relative to the corresponding elements of the initial sequence are all x; that is, [x; x; x; x; x+pi; x+pi; x; x]; Or, the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x+180 degrees, and the third The phase rotation angle of each element of the sequence relative to the corresponding element of the initial sequence is x+180 degrees, the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x, and each element of the fifth sequence is relative The phase rotation angle of the corresponding element in the initial sequence is x, the phase rotation angle of each element in the sixth sequence relative to the corresponding element in the initial sequence is x, and the phase rotation of each element in the seventh sequence relative to the corresponding element in the initial sequence The angles are all x, and the phase rotation angles of each element of the eighth sequence relative to the corresponding element of the initial sequence are all x; that is, [x; x+pi; x+pi; x; x; x; x; x].

Method 6: Use 8 segments of the same sequence to transmit, there is no interval between the sequences; there is a certain phase difference between the sequences; there is a phase difference between the elements within the sequence.

The phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, and the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x+90 degrees. The phase rotation angle of each element relative to the corresponding element of the initial sequence is x+90 degrees, the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x+180 degrees, each element of the fifth sequence The phase rotation angle relative to the corresponding element of the initial sequence is x+180 degrees, the phase rotation angle of each element of the sixth sequence relative to the corresponding element of the initial sequence is x+90 degrees, and each element of the seventh sequence is relative to The phase rotation angle of the corresponding element of the initial sequence is x+90 degrees, and the phase rotation angle of each element of the eighth sequence relative to the corresponding element of the initial sequence is x; that is, [x; x+pi/2; x+pi /2; x+pi; x+pi; x+pi/2; x+pi/2; x]; for example, when x=90 degrees, the rotation angle of 8 sequences is: [pi/2; pi; pi ;3*pi/2;3*pi/2;pi;pi;pi/2]; For example, when x=180 degrees, the rotation angle of 8 sequences is: [pi;3*pi/2;3*pi /2; 2*pi; 2*pi; 3*pi/2; 3*pi/2; pi]; For example, when x=270 degrees, the rotation angle of 8 sequences is: [3*pi/2; 2 *pi; 2*pi; pi/2; pi/2; 2*pi; 2*pi; 3*pi/2]; For example, when x=360 degrees, the rotation angle of 8 sequences is: [2*pi ;Pi/2;pi/2;pi;pi;pi/2;pi/2;2*pi], or, the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, the first The phase rotation angle of each element of the two sequences relative to the corresponding element of the initial sequence is x+270 degrees, the phase rotation angle of each element of the third sequence relative to the corresponding element of the initial sequence is x+270 degrees, the fourth The phase rotation angle of each element of the sequence relative to the corresponding element of the initial sequence is x+180 degrees, and the phase rotation angle of each element of the fifth sequence relative to the corresponding element of the initial sequence is x+180 degrees. The phase rotation angle of each element relative to the corresponding element of the initial sequence is x+270 degrees, the phase rotation angle of each element of the seventh sequence relative to the corresponding element of the initial sequence is x+270 degrees, each element of the eighth sequence The phase rotation angle relative to the corresponding element of the initial sequence is x; that is, [x; x+3*pi/2; x+3*pi/2; x+pi; x+pi; x+3*pi/2 ;X+3*pi/2;x]; For example, when x=90 degrees, the rotation angle of 8 sequences is: [pi/2; 2*pi; 2*pi; 3*pi/2; 3*pi /2; 2*pi; 2*pi; pi/2]; For example, when x=270 degrees, the rotation angle of 8 sequences is: [3*pi/2; pi; pi; pi/2; pi/2; pi; pi; 3*pi/2]; For example, when x=180 degrees, the rotation angle of 8 sequences is: [pi; pi /2; pi/2; 2*pi; 2*pi; pi/2; pi/2; pi]; For example, when x=360 degrees, the rotation angle of 8 sequences is: [2*pi; 3*pi /2; 3*pi/2; pi; pi; 3*pi/2; 3*pi/2; 2*pi], where the value of x is at the low end of the frequency domain or the initial position of the frequency domain mapping The phase value of the first sequence relative to the initial sequence.

Method 7: Use two identical ZC sequences for transmission, with a fixed interval between the sequences; there is no phase difference between the overall sequence; there is a phase difference between the elements within the sequence.

Compared with related technologies, the method and device (system) described in this application conform to the unlicensed occupied channel bandwidth (OCB), so that nodes can access the network in the unlicensed frequency band.

Angle X and angle X+N*2*pi represent the same angle, and N is an integer.

Among them, π or pi means 180 degrees, * means multiplication, and / means division.

The implementation of the technical solution is described below in conjunction with the drawings:

Example one:

This embodiment can correspond to the above method one. Two identical 139 sequences are used for transmission, and there is no gap between the sequences; there is no phase difference between the sequences, and there is no phase difference between the elements within the sequence. As shown in Figure 2, sequence 1 and sequence 2 are the same sequence; sequence 1 and sequence 2 occupy positions in the frequency domain without gaps; there is no phase difference between sequence 1 and sequence 2; the same sequence refers to the same sequence length, The position cyclic shift value is the same, and the same logical root sequence; this embodiment is applied to the physical random access channel (PRACH, Physical Random Access Channel) sub-carrier spacing of 120KHz, 60KHz, 30KHz, integer multiples of 15KHz, 1 of 15KHz In scenarios such as /N, where N is a positive integer.

Example two

This embodiment can correspond to the second method above. Two segments of the same sequence are used for transmission, and there is a gap between the sequences; there is a certain phase difference between the sequences; there is no phase difference between the elements within the sequence. The sequence length W, the number of repetitions of the sequence Y, the rotation angle between the elements between the sequences or between the sequences is Z; the interval between the sequences is H RBs or REs or data subcarriers or RACH subcarriers; Among them, W, Y, H are integers, and the value range of Z is 0 to 360 degrees, that is, [0,360); Z may be one value or multiple values, and sequences at different positions may correspond to different angles; Or each element of the same sequence has a different angle relative to the corresponding element in the initial sequence, or a combination of the above two situations.

In an embodiment, the frequency domain interval between different sequences is: (2^N)*M-W subcarriers, where the M and N are positive integers, and ^ represents power.

In an embodiment, when N=10, the frequency domain interval between different sequences is 1024-W, and W is the sequence length.

In an embodiment, there is a fixed frequency domain interval of 885 subcarriers between sequences.

For the phase relationship between the sequences, the embodiments of this application propose the following methods:

In one embodiment, the certain phase difference between the sequences is pi/2, or pi*3/2; that is, [x,x+pi/2]; or, [x,x+pi*3/2] ; Or, [x,x-pi/2]; Or, [x,x-pi*3/2].

The value of x is the phase value of the first sequence relative to the original sequence at the low end of the frequency domain or the initial position of the frequency domain mapping.

The initial sequence can be a sequence generated according to certain rules, or a sequence obtained by performing corresponding operations on the generated sequence, or a predefined sequence.

This embodiment is applied in scenarios where the sub-carrier spacing is 120KHz, 60KHz, 30KHz, integer multiples of 15KHz, 1/N of 15KHz, etc., where N is a positive integer.

As shown in Figure 3, sequence 2 is the sequence after sequence 1 is phase-rotated, and the value of phase rotation is {pi/2, -pi/2, 3*pi/2, -3*pi/2}. The frequency domain spacing between sequences is 885 subcarriers. Among them, π or pi means 180 degrees, * means multiplication, and / means division.

Example three

This embodiment can correspond to the third method above. Four segments of the same sequence are used for transmission, the interval between the sequences is greater than or equal to 0; there is a certain phase difference between the sequences; there is no relative phase rotation between the elements in the sequence.

In one embodiment, there is a certain phase difference between the sequences, and the rotation angles of the four sequences are: [x; x+pi/2; x+pi/2; x]; or, [x; x+pi* 3/2; x+pi*3/2; x]; or, [x; x-pi/2; x-pi/2; x]; or [x; x-pi*3/2; x-pi *3/2; x]. Among them, the value of x is 0 degrees to 360 degrees. Among them, π or pi means 180 degrees, * means multiplication, and / means division. Among them, the value of x is the phase value of the first sequence relative to the initial sequence at the low end of the frequency domain or the initial position of the frequency domain mapping.

Example four

This embodiment can correspond to the fourth method above. Four segments of the same sequence are used for transmission, and the interval between the sequences is greater than or equal to 0; there is a certain phase difference between the sequences; there is no phase difference between the elements within the sequence.

In an embodiment, the certain phase difference between the sequences is:

The phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x, and the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x+180 degrees. The phase rotation angle of each element relative to the corresponding element of the initial sequence is x+180 degrees, and the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x+180 degrees, that is, [x; x+ pi; x+pi; x+pi]; For example, when x=0 degree, the rotation angle of 4 sequences is: [0; pi; pi; pi]; when x=90 degree, the rotation angle of 4 sequences is : [Pi/2; pi/2; pi/2; 3*pi/2]; when x=180 degrees, the rotation angle of 4 sequences is: [pi; 0; 0; 0]; when x=270 degrees , The rotation angles of the 4 sequences are: [3*pi/2; 3*pi/2; 3*pi/2; pi/2]; where the value of x is at the low end of the frequency domain or is mapped in the frequency domain The phase value of the first sequence of the initial position relative to the initial sequence. Among them, the value of x is 0 degrees to 360 degrees. Among them, π or pi means 180 degrees, * means multiplication, and / means division.

Example five

This embodiment can correspond to the fifth method above. Using 8 segments of the same ZC sequence transmission, the interval between the sequences is greater than or equal to 0; there is a certain phase difference between the sequences; there is no phase difference between the elements within the sequence.

For example, the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x degrees, the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x degrees, and the third sequence The phase rotation angle of each element relative to the corresponding element of the initial sequence is x degrees, the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x degrees, and each element of the fifth sequence is relative to the initial sequence. The phase rotation angles of the corresponding elements of the sequence are x degrees + 180 degrees, the phase rotation angles of the elements of the sixth sequence relative to the corresponding elements of the initial sequence are x degrees + 180 degrees, and the elements of the seventh sequence are relative to the initial The phase rotation angles of the corresponding elements of the sequence are all x degrees, and the phase rotation angles of the elements of the eighth sequence relative to the corresponding elements of the initial sequence are all x degrees, that is, [x; x; x; x; x+pi; x +pi;x;x]; Or, the phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x degrees, and the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is all Is x degree + 180 degrees, the phase rotation angle of each element of the third sequence relative to the corresponding element of the initial sequence is x degree + 180 degrees, and the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is all Is x degrees, the phase rotation angle of each element of the fifth sequence relative to the corresponding element of the initial sequence is x degrees, the phase rotation angle of each element of the sixth sequence relative to the corresponding element of the initial sequence is x degrees, the seventh The phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x degrees, and the phase rotation angle of each element of the eighth sequence relative to the corresponding element of the initial sequence is x degrees; that is, [x; x+pi ;X+pi;x;x;x;x;x]; where π or pi means 180 degrees, * means multiplication, and / means division. Among them, the value of x is the phase value of the first sequence relative to the initial sequence at the low end of the frequency domain or the initial position of the frequency domain mapping. Among them, the value of x is 0 degrees to 360 degrees.

Example Six

This embodiment can correspond to the sixth method above. Using 8 segments of the same sequence for transmission, the interval between the sequences is greater than or equal to 0; there is a certain phase difference between the sequences; there is a phase difference between the elements within the sequence.

The phase rotation angle of each element of the first sequence relative to the corresponding element of the initial sequence is x degrees, the phase rotation angle of each element of the second sequence relative to the corresponding element of the initial sequence is x degrees + 90 degrees, the third The phase rotation angle of each element of the sequence relative to the corresponding element of the initial sequence is x degree + 90 degrees, the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x degree + 180 degrees, the fifth The phase rotation angle of each element of the sequence relative to the corresponding element of the initial sequence is x degrees + 180 degrees, the phase rotation angle of each element of the sixth sequence relative to the corresponding element of the initial sequence is x degrees + 90 degrees, the seventh The phase rotation angle of each element of the sequence relative to the corresponding element of the initial sequence is x degrees + 90 degrees, and the phase rotation angle of each element of the eighth sequence relative to the corresponding element of the initial sequence is x degrees; that is, [x; x +pi/2; x+pi/2; x+pi; x+pi; x+pi/2; x+pi/2; x]; For example, when x=90 degrees, the rotation angle of 8 sequences is: [pi/2; pi; pi; 3*pi/2; 3*pi/2; pi; pi; pi/2]; For example, when x=180 degrees, the rotation angle of 8 sequences is: [pi; 3 *pi/2; 3*pi/2; 2*pi; 2*pi; 3*pi/2; 3*pi/2; pi]; For example, when x=270 degrees, the rotation angle of 8 sequences is: [3*pi/2; 2*pi; 2*pi; pi/2; pi/2; 2*pi; 2*pi; 3*pi/2]; for example, when x=360 degrees, there are 8 sequences The rotation angle is: [2*pi; pi/2; pi/2; pi; pi; pi/2; pi/2; 2*pi], or the element of the first sequence relative to the corresponding element of the initial sequence The phase rotation angles are all x degrees, the phase rotation angles of each element of the second sequence relative to the corresponding element of the initial sequence are x degrees +270 degrees, and the phase rotation angle of each element of the third sequence relative to the corresponding element of the initial sequence All are x degrees + 270 degrees, the phase rotation angle of each element of the fourth sequence relative to the corresponding element of the initial sequence is x degrees + 180 degrees, and the phase rotation angle of each element of the fifth sequence relative to the corresponding element of the initial sequence All are x degrees + 180 degrees, the phase rotation angle of each element of the sixth sequence relative to the corresponding element of the initial sequence is x degrees + 270 degrees, and the phase rotation angle of each element of the seventh sequence relative to the corresponding element of the initial sequence All are x degrees + 270 degrees, the phase rotation angle of each element of the eighth sequence relative to the corresponding element of the initial sequence is x degrees; that is, [x; x+3*pi/2; x+3*pi/2 ;X+pi;x+pi;x+3*pi/2;x+3*pi/2;x]; For example, when x=90 degrees, the rotation angle of 8 sequences is: [pi/2;2 *pi; 2*pi; 3*pi/2; 3*pi/2; 2*pi; 2*pi; pi/2]; for example, x=2 At 70 degrees, the rotation angle of 8 sequences is: [3*pi/2; pi; pi; pi/2; pi/2; pi; pi; 3*pi/2]; for example, when x=180 degrees, The rotation angle of 8 sequences is: [pi; pi/2; pi/2; 2*pi; 2*pi; pi/2; pi/2; pi]; for example, when x=360 degrees, the 8 sequences The rotation angle is: [2*pi; 3*pi/2; 3*pi/2; pi; pi; 3*pi/2; 3*pi/2; 2*pi]. Among them, the value of x is the phase value of the first sequence relative to the initial sequence at the low end of the frequency domain or the initial position of the frequency domain mapping. Among them, the value of x is 0 degrees to 360 degrees. Among them, π or pi means 180 degrees, * means multiplication, and / means division.

Example Seven

Two identical ZC sequences are used for transmission, with a fixed interval between the sequences; there is no phase difference between the overall sequence; there is a phase difference between the elements within the sequence.

There is a certain interval between sequence 1 and sequence 2, and this interval can be 0; it can also be one RB or multiple RBs; it can also be one RE or multiple REs.

The phase difference between the various elements is any value in [0,π/2) or [0,-2π).

In an embodiment, the phase interval between each element can be any one of 0, +pi/2, +pi, +pi*3/2; the phase interval between each element can be 0, -pi/ 2. Any one of -pi, -pi*3/2. As shown in Figure 4, element 2 of sequence 1 has a phase rotation of pi relative to element 1 of sequence 1; element 3 of sequence 1 has a phase rotation of pi relative to element 2 of sequence 1, and so on, between adjacent elements There is a fixed phase rotation relationship, and the trend can show a gradual upward trend or a downward trend. In one embodiment, each element of sequence 1 has the following phase value relative to the original sequence: the phase value of element 1 is x+pi/2; the phase value of element 2 is x+pi; the phase value of element 3 is x+3 *pi/2; the phase value of element 4 is x+2*pi; the phase value of element 4 is x+5*pi/2, and so on. The value of x is the phase value of the first sequence relative to the original sequence at the low end of the frequency domain or the initial position of the frequency domain mapping. Among them, π or pi means 180 degrees, * means multiplication, and / means division. Among them, the value of x is 0 degrees to 360 degrees.

5A is a schematic diagram of a complementary cumulative distribution function (CCDF) curve of a sequence of CM values, FIG. 5B is a schematic diagram of a CCDF curve of a sequence of CM values according to an embodiment of the application, and FIG. 5C is another example of an embodiment of the application A schematic diagram of the CCDF curve of a sequence of CM values. As shown in Figure 5A, the probability that the CM value is greater than 2.333 is 0.05088, or the CM value is 2.333. The sequence length corresponding to FIG. 5B is 139, the number of sequences is 2, and the frequency domain interval between the sequences is 885 subcarriers. As shown in Figure 5B, the probability that the CM value is greater than 2.333 is 0.05088, or the CM value is 2.333, which has the same performance as the CM value of the related technology. FIG. 5C corresponds to the fourth embodiment of the present application, the sequence length is 139, the number of sequences is 8, and the frequency domain interval between the sequences is 0. As shown in Figure 5C, the probability that the CM value is greater than 2.66 is 0.05072, or the CM value is 2.66, which is similar to the CM value performance of the related technology.

An embodiment of the present application also proposes a signal sending device. Fig. 6 is a schematic structural diagram of the device, including:

The determining module 610 is configured to determine the configuration mode of the sequence, the configuration mode includes at least one of the number of the sequence, the length of the sequence, and the phase rotation angle of the elements in the sequence; the generating module 620 is configured to determine the configuration mode according to the configuration mode. Generate a sequence; the mapping and sending module 630 is used to map the sequence to channel resources and send.

In a possible implementation, the phase rotation angle of each element in the sequence is:

The phase rotation angle of each element in the sequence relative to each corresponding element in the initial sequence; or, the phase rotation angle of each element in the sequence relative to each corresponding element in other sequences, and the other sequences are divided by the signal Any sequence other than the stated sequence.

For the functions of the modules in the devices in the embodiments of the present application, reference may be made to the corresponding descriptions in the foregoing method embodiments, and details are not described herein again.

FIG. 7 is a schematic diagram of the structure of a communication node for signal transmission according to an embodiment of the application. As shown in FIG. 7, the communication node 700 provided in the embodiment of the application includes a memory 703 and a processor 704. The communication node 70 may also include an interface 701 and a bus 702. The interface 701, the memory 703, and the processor 704 are connected through a bus 702. The memory 703 is used to store instructions. The processor 704 is configured to read the instructions to execute the technical solutions of the foregoing method embodiments applied to communication nodes. The implementation principles and technical effects are similar, and details are not described herein again.

The present application provides a storage medium that stores a computer program, and when the computer program is executed by a processor, the method in the foregoing embodiment is implemented.

The embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a hardware embodiment, a software embodiment, or an embodiment combining software and hardware. Moreover, this application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to flowcharts and/or block diagrams of methods, equipment (systems), and computer program products according to the embodiments of this application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are generated It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

The above are only examples of the present application, and are not used to limit the protection scope of the present application.

Claims

A signal transmission method, including:

Determine the configuration mode of the sequence, the configuration mode includes at least one of the following: the number of the sequence, the length of the sequence, and the phase rotation angle of the elements in the sequence;

Generate a sequence according to the configuration mode;

The sequence is mapped to channel resources and sent.
The method according to claim 1, wherein the configuration method further comprises at least one of the following: a frequency domain starting position, a frequency domain offset value, and a frequency domain interval between different sequences.
The method according to claim 2, wherein one of the configuration modes satisfies one of the following: notified by control signaling, predefined combination for selection by the communication node, pre-stored in the communication node and triggered by control signaling, It is notified by the control channel and configured by higher layers.
The method according to claim 1, wherein the phase rotation angle of the elements in the sequence is:

The phase rotation angle of each element in the sequence relative to the corresponding element in the initial sequence; or, the phase rotation angle of each element in the sequence relative to the corresponding element in other sequences, and the other sequence is the signal Sequences other than those described in.
The method according to claim 4, wherein the initial sequence is one of the following: a sequence generated according to a predetermined rule, a sequence obtained by performing a corresponding operation on a sequence generated according to a predetermined rule, and a predefined sequence.
The method according to claim 2, wherein the frequency domain interval between the different sequences is one of the following:

H or 1/H resource blocks RB, H or 1/H resource elements RE, H or 1/H data subcarriers, H or 1/H random access channel RACH subcarriers; where H is an integer, / Stands for division.
The method according to claim 4, wherein the configuration mode is:

The number of sequences is 2;

The length of the two sequences is W, where W is a positive integer;

The phase rotation angles of multiple elements in each sequence relative to the corresponding elements in the initial sequence are all X; X is a value in the range of [0, 2π), and 2π is 360 degrees;

The frequency domain interval between different sequences is greater than or equal to zero.
The method according to claim 7, wherein there is no phase difference between the two sequences.
The method according to claim 4, wherein the configuration mode is:

The number of sequences is 2;

The length of each sequence is W, where W is a positive integer;

In the two sequences, the phase rotation angles of multiple elements in one sequence relative to the corresponding elements in the initial sequence are all X, and multiple elements in the other sequence are relative to the phase rotation angles of the corresponding elements in the initial sequence. The rotation angles are all Y; X and Y are not equal, and X and Y are values in the range of [0, 2π), and 2π is 360 degrees;

The frequency domain interval between different sequences is greater than or equal to zero.
The method according to claim 9, wherein Y is equal to one of: X+π/2, X+3*π/2, X-π/2, X-3*π/2;

Among them, π means 180 degrees; * means multiplication and / means division.
The method according to claim 9, wherein the phase difference between the two sequences is π/2 or 3*π/2.
The method according to claim 9, wherein the frequency domain interval between the two sequences is (2^N)*M-W subcarriers, where M and N are positive integers, and ^ represents power.
The method according to claim 12, wherein the length of the two sequences is 139, and the frequency domain interval between the two sequences is 885.
The method according to claim 4, wherein the configuration mode is:

The number of sequences is 4;

The length of each sequence is W, where W is a positive integer;

In the four sequences, multiple elements of one sequence have the same phase rotation angle relative to the corresponding element in the initial sequence;

The frequency domain interval between different sequences is one of the following: 0, H RBs, H REs, H data subcarriers, and H RACH subcarriers; H is an integer.
The method according to claim 14, wherein, among the four sequences, each element in the first sequence, the second sequence, the third sequence, and the fourth sequence is relative to the corresponding element in the initial sequence The phase rotation angle of the elements is one of the following:

X, X+π/2, X+π/2, X;

X, X+3*π/2, X+3*π2, X;

X, X-π/2, X-π/2, X;

X, X-3*π/2, X-3*π/2, X;

Among them, X is a value in the range of [0, 2π), π represents 180 degrees, * represents multiplication, and / represents division.
The method according to claim 15, wherein there is a phase difference between the 4 sequences.
The method according to claim 4, wherein the configuration mode is:

The number of sequences is 8;

The length of each sequence is W, where W is a positive integer;

In the eight sequences, multiple elements of one sequence have the same phase rotation angle relative to the corresponding element in the initial sequence;

The frequency domain interval between different sequences is greater than or equal to zero.
The method according to claim 17, wherein among the 8 sequences, the first sequence, the second sequence, the third sequence, the fourth sequence, the fifth sequence, the sixth sequence, and the seventh sequence The phase rotation angle of each element in the first sequence and the eighth sequence relative to the corresponding element in the initial sequence is one of the following:

X, X, X, X, X+π, X+π, X, X;

X, X+π, X+π, X, X, X, X, X;

X, X+π/2, X+π/2, X+π, X+π, X+π/2, X+π/2, X;

X, X+3*π/2, X+3*π/2, X+π, X+π, X+3*π/2, X+3*π/2, X;

Among them, X is a value in the range of [0, 2π), π represents 180 degrees, * represents multiplication, and / represents division.
The method of claim 18, wherein there is a phase difference between the 8 sequences.
The method according to claim 4, wherein the configuration mode is:

The number of sequences is 2;

The length of each sequence is W, where W is a positive integer;

In the two sequences, multiple elements of one sequence have the same or different phase rotation angles relative to the corresponding elements in the initial sequence;

The frequency domain interval between different sequences is one of the following: 0, H or 1/H RB, H or 1/H RE, H or 1/H data subcarrier, H RACH subcarrier; H is an integer , / Stands for division.
The method according to claim 20, wherein there is no phase difference between the two sequences.
The method of claim 21, wherein:

The phase difference between multiple elements in the two sequences is one of the following: 0, π/2, π, 3*π/2; or,

The phase difference between multiple elements in the two sequences is one of the following: 0, -π/2, -π, -3*π/2.
A signal sending device, which includes:

The determining module is set to determine the configuration mode of the sequence, and the configuration mode includes at least one of the following: the number of the sequence, the length of the sequence, and the phase rotation angle of the elements in the sequence;

A generating module, configured to generate a sequence according to the configuration mode;

The mapping and sending module is configured to map the sequence to the channel resource and send it.
The device according to claim 23, wherein the phase rotation angle of the elements in the sequence is:

The phase rotation angle of each element in the sequence relative to the corresponding element in the initial sequence; or, the phase rotation angle of each element in the sequence relative to the corresponding element in other sequences, and the other sequence is the signal Sequences other than those described in.
A communication node for signal transmission, including: a processor and a memory;

The memory is set to store instructions;

The processor is configured to read the instruction to execute the signal sending method according to any one of claims 1-22.
A storage medium storing a computer program that, when executed by a processor, implements the signal sending method according to any one of claims 1 to 22.