CN114287123B - Reference signal processing method, device and system - Google Patents

Abstract

A reference signal processing method, device and system. Wherein, the method includes generating a sequence of reference signals, wherein a cyclically shifted phase α _i,l of the sequence of reference signals is related to a random phase factor, where i represents that the reference signal is sent through the i-th port , l represents the number of symbols or symbol index or symbol number mapped by the sequence; map the sequence to one or more symbols and send. This method adds symbol-level phase rotation when generating a sequence of reference signals, so that the cyclic displacements of reference signals of different symbols on the same port are different, which can reduce interference between terminals and improve the accuracy of delay estimation.

Description

A reference signal processing method, device and system

Technical Field

The present application relates to the field of communication technology, and in particular to a method, device and system for processing a reference signal.

Background Art

3GPP TR 38.855 clearly defines the positioning technologies supported in the New Radio (NR), such as downlink positioning technology, uplink positioning technology, and uplink and downlink positioning technology. Among them, uplink positioning and uplink and downlink positioning technologies require the base station to measure the sounding reference signal (SRS) sent by the terminal.

The existing standard supports the number of consecutive symbols in a time slot of SRS as 1, 2, 4, 8, 12, the port number is 1, 2, 4, the comb value is 2, 4, 8, and the comb value is N, which means that SRS is transmitted at the granularity of every N subcarriers, so that the SRS sent by N terminals can be frequency-divided. For example, as shown in Figure 1, take the comb value as 2 and the number of consecutive symbols as 2 as an example. When the number of transmission ports is greater than 1, these ports use the same resource element (RE) and sequence, and at this time, cyclic shift is needed to distinguish different ports.

The existing NR system SRS sequence expression is:

Among them, the number of symbols is the number of consecutive symbols in a time slot, For a low peak-to-average ratio sequence, is a low peak-to-average ratio base sequence; _pi represents the current port number, δ = log ₂ (K _TC ), K _TC is the comb value, is the number of resource blocks in a subcarrier, and the value of m _SRS,b is related to the frequency hopping parameter. The phase α _i of the cyclic shift is related to the maximum cyclic shift number, the total number of antenna ports, the current port number, and the cyclic shift. The expression of the phase α _i of the cyclic shift is as follows:

in,

represents the cyclic shift on the i-th port, is the maximum cyclic displacement value of SRS. When the comb value is 2, The value is 8; when the comb value is 4, The value is 12. Indicates circular shift, the value range is is the total number of ports, and _pi represents the current port number.

In the prior art, SRSs of different symbols on the same port have the same cyclic shift, which causes the autocorrelation peaks of SRSs sent by a terminal and the cross-correlation peaks of SRSs sent by other terminals to be too close, resulting in interference between terminals and affecting the accuracy of delay estimation.

Summary of the invention

In order to solve the problem in the prior art that SRSs of different symbols on the same port have the same cyclic shift, resulting in serious interference between terminals and affecting the accuracy of delay estimation, the embodiments of the present application provide a reference signal processing method, device and system, so that the cyclic shifts of SRSs of different symbols on the same port are different, thereby reducing interference between terminals and improving the accuracy of delay estimation.

In the first aspect, an embodiment of the present application provides a method for processing a reference signal, comprising: generating a sequence of reference signals, wherein the cyclic shift phase α _i l of the sequence is related to a random phase factor, wherein i represents the use of the i-th port to send the reference signal, and l represents the number of symbols or symbol index or symbol number of the sequence mapping, or the sequence is related to a random phase factor, wherein the random phase factor represents that the sequence mapping has different cyclic shift values for different symbols; mapping the sequence to one or more symbols, and sending the same. The technical solution provided by the embodiment of the present application, by introducing a random phase factor, enables the sequence mapping to have different cyclic shifts on each symbol, so that the peaks of the autocorrelation of the terminal when sending the reference signal and the cross-correlation of the reference signal sent by other terminals are staggered, which can effectively reduce interference between terminals, improve the accuracy of positioning parameter estimation, and thus improve positioning accuracy.

In one possible implementation, the random phase factor is specifically related to any one of the following parameters: a symbol index corresponding to a symbol mapped by the sequence; or, a symbol index corresponding to a symbol mapped by the sequence and a time slot index corresponding to a mapped time slot; or, a low peak-to-average ratio sequence.

In another possible implementation, the random phase factor is:

The cyclic shift phase α _i,l satisfies the following formula:

or,

in,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation;

N _CS is an integer greater than or equal to 2, or same;

n _rand is used to determine the random phase rotation on different symbols;

Among them, n _rand satisfies the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation, the random phase factor is:

The cyclic shift phase α _i,l satisfies the following formula:

or,

in,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation;

N _CS is an integer greater than or equal to 2, or same;

n _rand is used to determine the random phase rotation on different symbols;

Among them, n _rand satisfies the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation, the random phase factor is:

The cyclic shift phase α _i,l satisfies the following formula:

or,

in,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation;

N _CS is an integer greater than or equal to 2, or same;

n _rand is used to determine the random phase rotation on different symbols;

Among them, n _rand satisfies the following formula:

in, represents the time slot index mapped by the pseudo-random sequence, l represents the symbol index in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation, the random phase factor is

The cyclic shift phase α _i,l satisfies the following formula:

or,

in,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation;

N _CS is an integer greater than or equal to 2, or same;

n _rand is used to determine the random phase rotation on different symbols;

Among them, n _rand satisfies the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation manner, the sequence is a pseudo-random sequence.

In another possible implementation, the random phase factor is: or

The cyclic shift phase α _i,l satisfies the following formula:

or,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

u is a preset value, or the value of u is related to the time slot index and the symbol index; It is a low peak-to-average ratio base sequence;

When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is:

When the sequence length is M _ZC = 30, the sequence expression is:

The technical solution provided in the embodiment of the present application introduces a random phase factor so that the cyclic shift of the sequence mapping on each symbol is different. In this way, the peak values of the autocorrelation of the reference signal sent by the terminal and the cross-correlation of the reference signals sent by other terminals are staggered, which can effectively reduce the interference between the terminals, improve the accuracy of positioning parameter estimation, and thus improve the positioning accuracy.

In a second aspect, an embodiment of the present application also provides a reference signal processing method, the method comprising: receiving one or more symbols from a terminal; obtaining a reference signal, wherein the cyclic shift phase α _i l of the sequence of the reference signal is related to a random phase factor, wherein i indicates that the reference signal is sent through the i-th port, and l indicates the number of symbols or symbol index or symbol number mapped by the sequence, or the sequence is related to the random phase factor, wherein the random phase factor indicates that the sequence mapping has different cyclic shift values for different symbols; measuring the reference signal.

In a possible implementation manner, the random phase factor is specifically related to any one of the following parameters:

The symbol index corresponding to the symbol mapped by the sequence; or the symbol index corresponding to the symbol mapped by the sequence and the time slot index corresponding to the mapped time slot; or a low peak-to-average ratio sequence. In another possible implementation, the random factor is:

The cyclic shift phase α _i,l satisfies the following formula:

or,

in,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

n _rand is used to represent random phase rotation on different symbols, where n _rand satisfies the following formula:

in, represents the time slot index mapped by the pseudo-random sequence, l represents the symbol index in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation, the random phase factor is:

The cyclic shift phase α _i,l satisfies the following formula:

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

represents the granularity of random phase rotation;

is the total number of ports; _pi represents the current port number;

n _rand represents random phase rotation on different symbols, where n _rand satisfies the following formula:

Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer ≥ 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation manner, the sequence is a pseudo-random sequence.

In another possible implementation, the random phase factor is or,

The cyclic shift phase α _i,l satisfies the following formula:

or,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports;

p _i represents the current port number;

u is a preset value, or the value of u is related to the time slot index and the symbol index; It is a low peak-to-average ratio base sequence;

When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is:

When the sequence length is M _ZC = 30, the sequence expression is:

In the third aspect, an embodiment of the present application also provides an apparatus for reference signal processing, comprising: a processing unit, configured to generate a sequence of reference signals, wherein the cyclic shift phase α _i,l of the sequence is related to a random phase factor, wherein i represents the use of the i-th port to send the reference signal, and l represents the number of symbols or the symbol index or the symbol number mapped by the sequence, or the sequence is related to the random phase factor, wherein the random phase factor indicates that the sequence mapping has different cyclic shift values for different symbols; the processing unit, further configured to map the sequence to one or more symbols; and a sending unit, configured to send the one or more symbols.

In a possible implementation manner, the random phase factor is specifically related to any one of the following parameters:

The symbol index corresponding to the symbol mapped by the sequence; or, the symbol index corresponding to the symbol mapped by the sequence and the time slot index corresponding to the mapped time slot; or, a low peak-to-average ratio sequence.

In another possible implementation, the random phase factor is:

The cyclic shift phase α _i,l satisfies the following formula:

or,

in,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation;

N _CS is an integer greater than or equal to 2, or same;

n _rand is used to determine the random phase rotation on different symbols;

Among them, n _rand satisfies the following formula:

in, represents the time slot index mapped by the pseudo-random sequence, l represents the symbol index in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is represents a sequence index or resource index, K is an integer greater than or equal to 0; or, n _rand satisfies the following formula:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation, the random phase factor is:

The cyclic shift phase α _i,l satisfies the following formula:

in,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation;

N _CS is an integer greater than or equal to 2, or same;

n _rand is used to determine the random phase rotation on different symbols;

Among them, n _rand satisfies the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is represents a sequence index or resource index, K is an integer greater than or equal to 0; or, n _rand satisfies the following formula:

Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation manner, the sequence is a pseudo-random sequence.

In another possible implementation, the random phase factor is: or,

The cyclic shift phase α _i,l satisfies the following formula:

or,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

u is a preset value, or the value of u is related to the time slot index and the symbol index; is a low peak-to-average ratio sequence base sequence; when the sequence length is M _ZC ∈{6, 12, 18, 24}, the sequence expression is:

When the sequence length is M _ZC = 30, the sequence expression is:

In a fourth aspect, a device for processing a reference signal comprises: a receiving unit, configured to receive one or more symbols from a terminal, and a processing unit, configured to obtain a reference signal, wherein a cyclic shift phase α _i,l of a sequence of the reference signal is related to a random phase factor, wherein i indicates that the reference signal is sent through the i-th port, and l indicates the number of symbols or the symbol index or the symbol number mapped by the sequence, or the sequence is related to the random phase factor, wherein the random phase factor indicates that the sequence mapping has different cyclic shift values for different symbols; the processing unit is also configured to measure the reference signal.

In a possible implementation, the random phase factor is specifically related to any one of the following parameters:

The symbol index corresponding to the symbol mapped by the sequence; or, the symbol index corresponding to the symbol mapped by the sequence and the time slot index corresponding to the mapped time slot; or, a low peak-to-average ratio sequence.

In a possible implementation, the random factor is:

The cyclic shift phase α _i,l satisfies the following formula:

or,

in,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

n _rand is used to represent random phase rotation on different symbols, where n _rand satisfies the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is represents a sequence index or resource index, K is an integer greater than or equal to 0; or, n _rand satisfies the following formula:

Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation, the random phase factor is:

The cyclic shift phase α _i,l satisfies the following formula:

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

represents the granularity of random phase rotation;

is the total number of ports; _pi represents the current port number;

n _rand represents random phase rotation on different symbols, where n _rand satisfies the following formula:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer ≥ 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation manner, the sequence is a pseudo-random sequence.

In another possible implementation, the random phase factor is or,

The cyclic shift phase α _i,l satisfies the following formula:

or,

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports;

p _i represents the current port number;

u is a preset value, or the value of u is related to the time slot index and the symbol index; is a low peak-to-average ratio sequence base sequence; when the sequence length is M _ZC ∈{6, 12, 18, 24}, the sequence expression is:

When the sequence length is M _ZC = 30, the sequence expression is:

In combination with any one of the first to fourth aspects, in another possible implementation manner, the random phase factor is:

The SRS sequence satisfies the following formula:

Where p _i represents the current port number, l′ represents the number of symbols or symbol index or symbol number is the number of consecutive symbols of the SRS resource in a time slot;

K _TC is the comb value, is the number of resource blocks in a subcarrier, m _{SRS, and the value of b} is related to the frequency hopping parameter;

Cyclic shift phase

in,

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

δ = log ₂ (K _TC );

n _rand is used to determine the random phase rotation on different symbols;

n _rand value can be any rational number;

Alternatively, n _rand satisfies the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or the symbol index or the symbol number in the time slot, and N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is a pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the symbol index in the slot, N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In combination with any one of the first to fourth aspects, in another possible implementation manner, the random phase factor is:

The SRS sequence satisfies the following formula:

or

Where p _i represents the current port number, l′ represents the number of symbols or symbol index or symbol number is the number of consecutive symbols in a time slot;

K _TC is the comb value, is the number of resource blocks in a subcarrier, m _{SRS, and the value of b} is related to the frequency hopping parameter;

Cyclic shift phase

in,

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

u is a preset value, or the value of u is related to the time slot index and the symbol index; It is a low peak-to-average ratio base sequence;

When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is:

When the sequence length is M _ZC = 30, the sequence expression is:

δ = log ₂ (K _TC ).

In a fifth aspect, an embodiment of the present application further provides a computer-readable storage medium, wherein the storage medium stores instructions, which, when executed on a computer, causes the computer to execute a method as described in the first aspect or any possible implementation of the first aspect, or causes the computer to execute a method as described in the second aspect or any possible implementation of the second aspect.

In a sixth aspect, an embodiment of the present application further provides a device, comprising a processor and a memory, wherein the memory stores instructions, and when the instructions are executed, the processor is used to execute the method as described in the first aspect or any possible implementation of the first aspect, or the computer is used to execute the method as described in the second aspect or any possible implementation of the second aspect.

In the seventh aspect, an embodiment of the present application also provides a communication system, including a network device and a terminal device, wherein the terminal device includes the apparatus as described in the third aspect or any possible implementation of the third aspect, and the network device includes the apparatus as described in the fourth aspect or any possible implementation of the fourth aspect.

In the eighth aspect, an embodiment of the present application also provides a reference signal processing method, including: generating a reference signal sequence; mapping the sequence to one or more symbols, wherein the sequences on different symbols have different cyclic shifts; and sending the one or more symbols mapped with the sequence to a network device.

In the ninth aspect, an embodiment of the present application also provides an apparatus for reference signal processing, comprising: a processing unit for generating a sequence of a reference signal; mapping the sequence to one or more symbols, wherein the sequences on different symbols have different cyclic shifts; and a sending unit for sending the one or more symbols mapped with the sequence to a network device.

In the tenth aspect, an embodiment of the present application also provides a method for reference signal processing, including: receiving one or more symbols, on which a reference signal is mapped; wherein the reference signal sequences on different symbols have different cyclic shifts; and measuring the reference signal.

In the eleventh aspect, an embodiment of the present application also provides a device for reference signal processing, including: a receiving unit, used to receive one or more symbols, on which a reference signal is mapped, wherein the reference signal sequences on different symbols have different cyclic shifts; and a processing unit, used to measure the reference signal.

In combination with any one of the eighth aspect to the eleventh aspect, in a possible implementation manner, the reference signal is an SRS, and its sequence satisfies the following formula:

in, For a low peak-to-average ratio sequence,

It is a low peak-to-average ratio base sequence;

When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is:

When the sequence length is M _ZC = 30, the sequence expression is:

p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, is the number of consecutive symbols of the SRS resource in a time slot;

K _TC is the comb value, is the number of resource blocks in a subcarrier, m _{SRS, and the value of b} is related to the frequency hopping parameter;

Cyclic shift phase

in,

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

δ = log ₂ (K _TC );

n _rand is used to determine the random phase rotation on different symbols;

Indicates the length of a sequence corresponding to u value.

In combination with any one of the eighth to eleventh aspects, in another possible implementation manner, the n _rand satisfies the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or the symbol index or the symbol number in the time slot, and N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is a pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index. The value of K is an integer greater than or equal to 0.

In combination with any one of the eighth to eleventh aspects, in another possible implementation manner, the n _rand satisfies the following formula:

Where l represents the symbol index in the slot, N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In combination with any one of the eighth aspect to the eleventh aspect, in another possible implementation manner, the reference signal is an SRS, and its sequence satisfies the following formula:

in, or,

Will Substituting into the above formula, we get:

Will Substituting into the above formula, we get:

in, For a low peak-to-average ratio sequence,

It is a low peak-to-average ratio base sequence;

When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is:

When the sequence length is M _ZC = 30, the sequence expression is:

p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, is the number of consecutive symbols in a time slot;

K _TC is the comb value, is the number of resource blocks in one subcarrier, and the value of m _SRS,b is related to the frequency hopping parameters b and c.

Cyclic shift phase

in,

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number.

In combination with any one of the eighth to eleventh aspects, in another possible implementation manner, the sequence length M _ZC is received from a network device.

The technical solution provided in the embodiment of the present application introduces a random phase factor so that the cyclic shift of the sequence mapping on each symbol is different. In this way, the peak values of the autocorrelation of the reference signal sent by the terminal and the cross-correlation of the reference signals sent by other terminals are staggered, which can effectively reduce the interference between the terminals, improve the accuracy of positioning parameter estimation, and thus improve the positioning accuracy.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of SRS frequency division multiplexing when the comb value is 2 in a time slot;

FIG2 is a schematic diagram of a network structure provided in an embodiment of the present application;

FIG3 is a schematic diagram of another network structure provided in an embodiment of the present application;

FIG4A is a schematic diagram of a reference signal processing method provided by an embodiment of the present application;

FIG4B is a schematic diagram of another reference signal processing method provided by an embodiment of the present application;

FIG5 is a schematic diagram of a device provided in an embodiment of the present application;

FIG6 is a schematic diagram of another device provided in an embodiment of the present application;

FIG7 is a schematic diagram of a terminal device provided in an embodiment of the present application;

FIG8 is a schematic diagram of a network device provided in an embodiment of the present application.

DETAILED DESCRIPTION

The following is a description of the embodiments of the present application in conjunction with the accompanying drawings. Obviously, the described embodiments are only embodiments of a part of the present application, rather than all embodiments. It is known to those skilled in the art that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

The term "and/or" in this application can be a description of the association relationship of associated objects, indicating that three relationships can exist. For example, A and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.

The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments described here can be implemented in an order other than that illustrated or described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or modules is not necessarily limited to those steps or modules clearly listed, but may include other steps or modules that are not clearly listed or inherent to these processes, methods, products or devices. The naming or numbering of steps in this application does not mean that the steps in the method flow must be executed in the time/logical sequence indicated by the naming or numbering. The process steps that have been named or numbered can change the execution order according to the technical purpose to be achieved, as long as the same or similar technical effects can be achieved. The division of modules in this application is a logical division. There may be other division methods when it is implemented in actual applications. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection between modules can be electrical or other similar forms, which are not limited in this application. In addition, the modules or submodules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed in multiple circuit modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, fifth generation (5G) system or new radio (NR), or next generation communication system, etc.

To facilitate understanding of the embodiments of the present application, the network architecture applicable to the embodiments of the present application is first described in detail in conjunction with Figures 2 and 3.

FIG2 shows a schematic diagram of an architecture 200 applicable to an embodiment of the present application. As shown in FIG2 , the network architecture may specifically include the following network elements:

1. Terminal device: can be user equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote terminal, mobile device, user terminal, user agent or user device. The terminal device involved in the embodiments of the present application may include various handheld devices with wireless communication functions, vehicle-mounted devices, wearable devices, computing devices or other processing devices connected to a wireless modem.

In which, both FIG. 2 and FIG. 3 take the terminal device as UE as an example.

2. Network device: It can be a device used to communicate with a terminal device. The network device can be an evolved NodeB (eNB or eNodeB) in an LTE system, a base station (base transceiver station, BTS) in a global system for mobile communications (GSM) system or code division multiple access (CDMA), a base station (NodeB, NB) in a wideband code division multiple access (WCDMA) system, or a wireless controller in a cloud radio access network (CRAN) scenario, or the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network device in a 5G network, or a network device in a future evolved PLMN network, etc., and the embodiments of the present application are not limited.

3. Mobility management entity (MME): can be used to manage the location information, security and service continuity of terminal devices.

4. Location measurement unit (LMU) network element: can be integrated into network equipment, such as a base station, or can be separated from the base station. Responsible for receiving uplink signals sent by terminal equipment. In the embodiment of the present application, it is assumed that the LMU has the ability to send downlink signals.

5. Evolved serving mobile location center (E-SMLC) network element: can be used for positioning, for example, called a positioning service center or a positioning center or a positioning management device. In the embodiment of the present application, MME and LMU are both called positioning management devices. It is used to collect measurement information and location information reported by base stations and terminal devices, and is also responsible for performing location calculation on the measurement quantity of the base station or the terminal device to determine the location of the terminal device.

In this architecture, the terminal device can be connected to the radio access network via the eNodeB through the LTE-Uu interface. The E-SMLC and LMU are connected through the SLm interface, and the E-SMLC and MME are connected through the SLs interface.

FIG3 shows another schematic diagram of an architecture 300 applicable to an embodiment of the present application. As shown in the figure, the architecture 300 may specifically include the following network elements:

1. Location management function (LMF) network element: can be used for positioning, for example, it is called a positioning service center or a positioning center or a positioning management device. In the embodiment of the present application, they are all called positioning management devices. It is used to collect measurement information and location information reported by base stations and terminal devices. It is also responsible for position solving the measurement quantity of the base station or terminal device to determine the location of the terminal device. LMF can be a device or component deployed in the core network to provide positioning functions for terminal devices.

2. Access and mobility management function (AMF) entity: mainly used for mobility management and access management, etc., and can be used to implement other functions of the mobility management entity (MME) except session management, such as lawful interception or access authorization (or authentication). In the embodiment of the present application, it can be used to implement the functions of the access and mobility management network element.

The remaining network elements can refer to the description of the above architecture 200 and will not be repeated here.

In the architecture 300, the UE is connected to the radio access network (NG-RAN) through the next-generation eNodeB (ng-eNB) and gNB respectively through the LTE-Uu and/or NR-Uu interfaces; the radio access network is connected to the core network through the AMF through the NG-C interface. Among them, the next-generation radio access network (NG-RAN) includes one or more ng-eNBs; NG-RAN may also include one or more gNBs; NG-RAN may also include one or more ng-eNBs and gNBs. ng-eNB is an LTE base station accessing the 5G core network, and gNB is a 5G base station accessing the 5G core network. The core network includes functions such as AMF and LMF. AMF and LMF are connected through the NLs interface.

The ng-eNB in the above-mentioned Figures 2 and 3 may also be replaced by a transmission point (TP) or a transmission and reception point (TRP).

In the embodiments of the present application, the positioning management device is mentioned many times. The positioning management device refers to a network element that can manage the service cell and the neighboring cell. The positioning management device can be part of the core network, or it can be integrated into the access network device. For example, the positioning management device can be the LMF in the core network shown in Figure 3, or it can be the MME and LMU shown in the figure. The positioning management device can also be called a positioning center. This application does not limit the name of the positioning management device, and in future evolution technologies, the positioning management device may be given other names.

It should be understood that the network architecture applied to the embodiment of the present application is only an example, and the network architecture applicable to the embodiment of the present application is not limited thereto, and any network architecture that can realize the functions of the above-mentioned network elements is applicable to the embodiment of the present application. For example, the embodiment of the present application can be applied to other positioning systems.

It should also be understood that the above-mentioned "network element" can also be referred to as an entity, device, apparatus or module, etc., which is not particularly limited in this application. Moreover, in this application, for the sake of ease of understanding and explanation, the description of "network element" is omitted in some descriptions. For example, the LMF network element is referred to as LMF. In this case, the "LMF" should be understood as the LMF network element or LMF entity. Hereinafter, the description of the same or similar situations is omitted.

It should also be understood that the interface name between the above-mentioned network elements is only an example, and the name of the interface in the specific implementation may be other names, which are not specifically limited in this application. In addition, the name of the message (or signaling) transmitted between the above-mentioned network elements is only an example and does not constitute any limitation on the function of the message itself.

It should also be understood that the above naming is only for the convenience of distinguishing different functions, and should not constitute any limitation to this application. This application does not exclude the possibility of using other naming in 5G networks and other future networks. For example, in a 6G network, some or all of the above network elements may use the terminology in 5G, or may use other names, etc. This is a unified explanation, and no further elaboration is given below.

As shown in FIG4A , an embodiment of the present application provides a method for processing a reference signal, including:

Step 410: The terminal device generates a sequence of reference signals, wherein the cyclic shift phase α _i,l of the sequence is related to a random phase factor, wherein i indicates that the reference signal is sent using the i-th port, and l indicates the number of symbols or symbol index or symbol number mapped by the sequence, wherein the random phase factor indicates that the sequence mapping has different cyclic shift values for different symbols;

Step 420: Map the sequence to one or more symbols;

Step 430: Send the one or more symbols.

Step 440: The network device receives one or more symbols to obtain the reference signal, wherein the cyclic shift phase α _i,l of the sequence of the reference signal is related to the random phase factor, wherein i indicates that the reference signal is sent through the i-th port, and l indicates the number of symbols or symbol index or symbol number mapped by the sequence;

Step 450: Measure the reference signal to obtain a measurement result.

As shown in FIG4B , the embodiment of the present application further provides a method for information configuration, including:

S401: The positioning device sends a location information request (LOCATION INFORMATION REQUEST) to the serving base station;

S402: The serving base station sends SRS configuration information to the terminal, where the SRS configuration information includes one or more of the following information: random phase rotation type, including:

a) Use a pseudo-random sequence or a low peak-to-average ratio sequence. This is optional.

b) A random phase rotation value group (or a random phase rotation value set), the length of which is the same as the number of consecutive symbols in a time slot, and each value in the random phase rotation value group corresponds to the number of symbols (number of symbols) or symbol index (in a time slot) in sequence. This item is optional. When multiple ports are configured, the random phase rotation value group can be multiple groups, and the number of groups corresponds to the number of ports in sequence; when it is a group, each value in the random phase rotation value group corresponds to the number of symbols in sequence, and different ports on the same symbol correspond to the same random phase rotation value. For example, the number of consecutive symbols mapped to the reference signal in a time slot is 4, the number of ports is 2, and there are two groups of random phase rotation value groups, and each value in each group can be a rational number. Optionally, the random phase rotation value group does not require network device configuration, and can also be obtained by a formula stored in the terminal, such as the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or the symbol index or the symbol number in the time slot, and N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is a pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Or, it can be obtained by the following formula:

Where l represents the symbol index in the slot, N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

c) Random phase rotation granularity N _CS and binary digit K. This item is optional. When the terminal obtains the phase offset according to the following formula, the random phase rotation granularity N _CS and the binary digit K can be configured to the seed Danni by the network device. For example, the terminal generates a random phase rotation value through the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or the symbol index or the symbol number in the time slot, and N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is a pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Alternatively, a random phase rotation value can be generated using the following formula:

Where l represents the symbol index in the slot, N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

d) Low peak-to-average ratio sequence length, used to indicate the selected low peak-to-average ratio sequence length. This item is optional. When the reference signal adopts a low peak-to-average ratio sequence, the length of the low peak-to-average ratio sequence can be configured by the network device. For example, the sequence length M _ZC mentioned in the example below. The low peak-to-average ratio sequence length should be longer than the number of consecutive symbols in a time slot. For example, if the number of consecutive symbols in a time slot is 4, the low peak-to-average ratio sequence length is 6, and the values on the sequence correspond to the symbol index or the number of symbols (in a time slot) in sequence from the starting point.

e) Low peak-to-average ratio sequence group number offset, used to indicate the offset value of the selected low peak-to-average ratio sequence group number from group number 0. For example, when the number of antenna ports is 2, the number of consecutive symbols in a time slot is 4, the low peak-to-average ratio sequence length is 6, and the low peak-to-average ratio sequence group number offset is 1, the selected group number starts from group number 1. According to TS38.211 Table 5.2.2.2-1 or Table 1 of this document, the values corresponding to group number 1 are [-3, 3, -1, -1, 3, -3], and the values corresponding to group number 2 are [-3, -3, -3, 3, 1, -3]. In a time slot of port 2, the first symbol corresponds to -3, the second symbol corresponds to -3, the third symbol corresponds to -3, and the fourth symbol corresponds to 3. This item is optional. When not configured, the default value is 0.

S403: The serving base station sends a location information response (LOCATION INFORMATION RESPONSE) to the positioning device; optionally, the location information response carries SRS configuration information of the terminal, and the SRS configuration information includes one or more of the following information:

a) Use a pseudo-random sequence or a low peak-to-average ratio sequence

b) Random phase rotation value group (or called random phase rotation value set)

c) Random phase rotation granularity N _CS and binary bit number K

d) Low peak-to-average ratio sequence length, used to indicate the selected low peak-to-average ratio sequence length

e) Low peak-to-average ratio sequence group number offset, used to indicate the offset value between the selected low peak-to-average ratio sequence group number and group number 0

The meanings of the above five pieces of information can be found in the above description.

S404: The terminal sends an SRS to the serving base station and/or the neighboring base station.

S405: The positioning device sends a location measurement request to the serving base station and the neighboring base station. Optionally, the location measurement request sent to the neighboring base station includes one or more items of SRS configuration information:

a) Use a pseudo-random sequence or a low peak-to-average ratio sequence

b) Random phase rotation value group (or called random phase rotation value set)

c) Random phase rotation granularity N _CS and binary bit number K

d) Low peak-to-average ratio sequence length, used to indicate the selected low peak-to-average ratio sequence length

e) Low peak-to-average ratio sequence group number offset, used to indicate the offset value between the selected low peak-to-average ratio sequence group number and group number 0

The meaning of the above 5 information can refer to the description above.

S406: The serving base station and the neighboring base station measure the SRS and report the measurement results to the positioning device.

The random phase factor is related to any one or more of the following parameters:

The symbol index corresponding to the symbol mapped by the sequence; or, the symbol index corresponding to the symbol mapped by the sequence and the time slot index of the mapped time slot; or, through a low peak-to-average ratio sequence.

Exemplarily, in a first possible implementation manner, the random phase factor is:

The phase α _i,l of the cyclic shift satisfies the following formula:

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value, which is related to the comb value. In the current standard, when the comb value is 2, The value is 8; when comb is 4, The value is 12; when comb is 8, The value has not been determined yet. For example, when comb is 8, The value can be 6 or 12, or other values.

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation,

The value of N _CS can be an integer greater than or equal to 2, or it can be same.

n _rand is used to determine the random phase rotation on different symbols.

In a possible implementation, the value of n _rand is related to the time slot index and the symbol index, and the expression is:

in, represents the time slot index in a frame, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is a pseudo-random sequence, and the initial value It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

For example, when K=7, it is a scheme of multiplexing PUCCH:

In another possible implementation, the value of n _rand is only related to the symbolic index, and the expression is:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In the first implementation, a random phase factor is added after the cyclic shift formula When the sequence is mapped to symbols, the cyclic shifts of SRSs of different symbols on the same port are different, which reduces interference between terminals and improves the accuracy of delay estimation.

Exemplarily, in a second implementation, the random phase factor is

The phase α _i,l of the cyclic shift satisfies the following formula:

Where i represents the i-th port and l represents the number of symbols;

Indicates the maximum cyclic displacement value, which is related to the comb value. In the current standard, when the comb value is 2, The value is 8; when comb is 4, The value is 12; when comb is 8, The value has not yet been determined.

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation,

The value of N _CS can be an integer greater than or equal to 2, or it can be same.

n _rand is used to determine the random phase rotation on different symbols.

In a possible implementation, the value of n _rand is related to the time slot index and the symbol index, and the expression is:

in, represents the time slot index in a frame, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is a pseudo-random sequence, and the initial value It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation, the value of n _rand is only related to the symbolic index, and the expression is:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In the second implementation, by adding a random phase factor to α _i,l The cyclic shift of each symbol is different, which can effectively reduce the interference between terminals, improve the accuracy of positioning parameter estimation, and thus improve the positioning accuracy.

Those skilled in the art should understand that the sequences in the above implementation manner 1 and implementation manner 2 are pseudo-random sequences.

Exemplarily, in the third implementation, a random phase rotation is added to each symbol, and the random phase factor is: or

The expression of the cyclic shift phase α _i,l is:

in,

Alternatively, Substituting into α _i,l , we get the following expression:

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value, which is related to the comb value. In the current standard, when the comb value is 2, The value is 8; when comb is 4, The value is 12; when comb is 8, The value has not yet been determined.

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

is a low peak-to-average ratio sequence base sequence (sequence length < 36). When the sequence length M _ZC ∈ {6, 12, 18, 24}, the sequence expression is:

At this time, if Substitute into The following expression is obtained:

where u∈{0, 1, ..., 29}, Indicates the length of a sequence corresponding to u values, as shown in Tables 1 to 4. In addition, The value of can also refer to 3GPP TS38.211.

Table 1 Sequence length is 6 value

Table 2 When the sequence length is 12 value

Table 3 When the sequence length is 18 value

Table 4 Sequence length is 24 value

When the sequence length is M _ZC = 30, the sequence expression is:

At this time, if Substitute into The following expression is obtained:

Corresponding The expression is:

There are five types of sequence lengths, which can be configured by the network device for the terminal, for example, carried in the SRS configuration information and sent to the terminal. The selection of the sequence must meet the following requirements: the sequence length is greater than or equal to the number of reference signal symbols (in one time slot). For example, when the number of SRS symbols is 12, sequences with lengths of 12, 18, 24, and 30 can be selected.

u can be a preset value or obtained by configuring the network device or by pre-stored tables, for example:

The first type is that u takes the same value as For example, the value of u is related to The same value: When the value is 1, u is 1; when When the value is 2, u is 2; When the value is 3, u is 3. The above is just an example, and the corresponding method is not limited to this. The terminal can pre-store a table, and the table records u and The corresponding information is Or, the network device indicates The value of The terminal obtains the value of u based on the corresponding information.

The second type is that u takes the same value as The value is related to the current port number. For example, the total number of ports is 2, The value is 12. The value is 2, p _i =i+1000, i∈{0,1}, the number of consecutive SRS symbols (in one time slot) is 12, and port 1 corresponds to When the phase rotation on each symbol is 2, it corresponds to the sequence value of sequence length M _ZC = 12 and u = 2. The corresponding phase rotation on port 2 is When t is 8, the corresponding phase rotation on each symbol corresponds to a sequence value with a sequence length of M _ZC =18 and u=2. The above is only an example, and the corresponding manner is not limited thereto.

The third type is that u takes the same value as Related to the value of s, s represents the number of low peak-to-average ratio sequence groups offset. For example, u is equal to The value is added to the s value: when s is 1, When the value is 1, u takes the value of 2; when When the value is 2, the value of u is 3; When the value is 3, the value of u is 4. The above is just an example, and the corresponding method is not limited to this.

The fourth type, u value is related to the current port number and s value, s represents the number of low peak-to-average ratio sequence groups offset. is 2, s is 2, u=2 corresponding to port 1, and u=3 corresponding to port 2.

By adding a random phase factor to α _i,l or The cyclic shift of each symbol is different, which can effectively reduce the interference between terminals, improve the accuracy of positioning parameter estimation, and thus improve the positioning accuracy.

Optionally, in a fourth implementation, a random phase rotation is added to each symbol, and the random phase factor is: in, or,

The expression of the SRS sequence satisfies the following formula:

in, or,

Will Substituting into the above formula, we get:

Will Substituting into the above formula, we get:

in, is a low peak-to-average ratio sequence base sequence; when the sequence length is M _ZC ∈{6, 12, 18, 24}, the sequence expression is:

where u∈{0, 1, ..., 29}, Indicates the length of a sequence corresponding to u values, as shown in Tables 1 to 4. In addition, The value of can also refer to 3GPP TS38.211.

When the sequence length is M _ZC = 30, the sequence expression is:

At this time, if Substitute into The following SRS sequence expression is obtained:

Corresponding The expression is:

There are five sequence lengths, which are configured by the network device. The sequence selection must meet the following requirements: the sequence length is greater than or equal to the number of reference signal symbols (in one time slot). For example, when the number of SRS symbols is 12, sequences with lengths of 12, 18, 24, and 30 can be selected.

δ = log ₂ (K _TC );

u can be a preset value or a method configured by a network device or a pre-stored table in a terminal, for example, in the following manner:

The first type is that u takes the same value as For example, the value of u is related to The same value: When the value is 1, u is 1; when When the value is 2, u is 2; When the value is 3, u is 3. The above is just an example, and the corresponding method is not limited to this. The terminal can pre-store a table, and the table records u and The corresponding information is Or, the network device indicates The value of The terminal obtains the value of u based on the corresponding information.

The second type is that u takes the same value as The value is related to the current port number. For example, the total number of ports is 2, The value is 12. The value is 2, p _i =i+1000, i∈{0,1}, the number of consecutive SRS symbols (in one time slot) is 12, and port 1 corresponds to When the phase rotation on each symbol is 2, it corresponds to the sequence value of sequence length M _ZC = 12 and u = 2. The corresponding phase rotation on port 2 is When t is 8, the corresponding phase rotation on each symbol corresponds to a sequence value with a sequence length of M _ZC =18 and u=2. The above is only an example, and the corresponding manner is not limited thereto.

The third type is that u takes the same value as Related to the value of s, s represents the number of low peak-to-average ratio sequence groups offset. For example, u is equal to The value is added to the s value: when s is 1, When the value is 1, u takes the value of 2; when When the value is 2, the value of u is 3; When the value is 3, the value of u is 4. The above is just an example, and the corresponding method is not limited to this.

The fourth type, u value is related to the current port number and s value, where s represents the number of low peak-to-average ratio sequence groups offset. is 2, s is 2, u=2 corresponding to port 1, and u=3 corresponding to port 2.

p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, is the number of consecutive symbols in one time slot.

K _TC is the comb value, is the number of resource blocks in a subcarrier, m _{SRS, and the value of b} is related to the frequency hopping parameter, where the frequency hopping parameter is configured by the network device, for example, refer to TS38.211 Table 6.4.1.4.3-1, or Table 5 of this article, as follows, where b = B _SRS , c = C _SRS

Table 5 SRS bandwidth configuration

Cyclic shift phase

in,

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

δ = log ₂ (K _TC );

In the fourth implementation, the SRS sequence is multiplied by a random phase factor The cyclic shift of each symbol is different, which can effectively reduce the interference between terminals, improve the accuracy of positioning parameter estimation, and thus improve the positioning accuracy.

Optionally, in a fifth implementation, a random phase rotation is added to each symbol, and the random phase factor is:

The SRS sequence satisfies the following formula:

Where p _i represents the current port number, l′ represents the number of symbols or symbol index or symbol number is the number of consecutive symbols in a time slot;

K _TC is the comb value, is the number of resource blocks in one subcarrier, m _{SRS , and the value of b} is related to the frequency hopping parameter; wherein the frequency hopping parameter is configured by the network device, for example, refer to TS38.211 Table 6.4.1.4.3-1, or Table 5 of this document, wherein b= _BSRS , c= _CSRS .

Cyclic shift phase

in,

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

δ = log ₂ (K _TC );

n _rand is used to determine the random phase rotation on different symbols, that is, the random phase rotation value group mentioned above.

The value of n _rand can be configured by the network device, for example, to any rational number;

Alternatively, in addition to being configured by the network device, it can also be obtained by the terminal according to a formula. For example, n _rand satisfies the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or the symbol index or the symbol number in the time slot, and N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is a pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the symbol index in the slot, N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In the fifth implementation, the random phase factor is multiplied by the SRS sequence. When the sequence is mapped to symbols, the cyclic shift on each symbol is different, and the cyclic shifts of SRSs of different symbols on the same port are different, thereby reducing interference between terminals and improving delay estimation accuracy.

The various embodiments described herein may be independent solutions or may be combined according to internal logic, and all of these solutions fall within the protection scope of this application.

It can be understood that in each of the above method embodiments, the execution subject of processing the reference signal can be either a terminal device or a component (such as a chip or a circuit) that can be used in the terminal device.

The above describes the method embodiment provided by the embodiment of the present application, and the following describes the device embodiment provided by the embodiment of the present application. It should be understood that the description of the device embodiment corresponds to the description of the method embodiment, so the content not described in detail can be referred to the method embodiment above, and for the sake of brevity, it will not be repeated here.

Fig. 5 shows a schematic block diagram of a reference signal processing apparatus 500 according to an embodiment of the present application. The apparatus 500 includes the following units.

A generating unit 510 is configured to generate a reference signal sequence, wherein the sequence has different cyclic shift values when mapped to different symbols;

A generating unit 510, configured to map the sequence to one or more symbols;

The sending unit 520 is configured to send the one or more symbols.

Correspondingly, an embodiment of the present application further provides a schematic diagram of a reference signal processing apparatus 600 , where the apparatus 600 includes the following units.

The receiving unit 610 is configured to receive the one or more symbols;

A processing unit 620 is configured to obtain the reference signal, wherein the sequence mapping of the reference signal has different cyclic shift values in different symbols;

The processing unit 620 is further configured to measure the reference signal to obtain a measurement result.

The random phase factor is specifically related to any one of the following parameters: a symbol index corresponding to a symbol mapped by the sequence; or a symbol index corresponding to a symbol mapped by the sequence and a time slot index corresponding to a mapped time slot; or a low peak-to-average ratio sequence.

Optionally, the apparatus 500 further includes a receiving unit 530, configured to receive reference signal configuration information from a network device, where the reference signal configuration information includes one or more of the following information:

Random phase rotation type, random phase rotation value group n _rand , random phase rotation granularity N _CS and binary bit number K , low peak-to-average ratio sequence length M _ZC , low peak-to-average ratio sequence group number offset.

Accordingly, the apparatus 600 further includes a sending unit 630, configured to send reference signal configuration information to the terminal, where the reference signal configuration information includes one or more of the following information:

Random phase rotation type, random phase rotation value group n _rand , random phase rotation granularity N _CS and binary bit number K , low peak-to-average ratio sequence length M _ZC , low peak-to-average ratio sequence group number offset.

Optionally, the receiving unit 610 is further configured to receive a location information request from a positioning device, wherein the location information request carries one or more of the following information:

Random phase rotation type, random phase rotation value group n _rand , random phase rotation granularity N _CS and binary bit number K , low peak-to-average ratio sequence length M _ZC , low peak-to-average ratio sequence group number offset.

Optionally, the sending unit 630 is further configured to send a location information response to the positioning device.

Optionally, the receiving unit 610 is further configured to receive a position measurement request from the positioning device.

Optionally, the sending unit 630 is further configured to report the measurement result to the positioning device.

Optionally, in a first implementation manner, the random phase factor is:

The cyclic shift phase α _i,l of the sequence satisfies the following formula:

Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number;

Indicates the maximum cyclic displacement value, which is related to the comb value. In the current standard, when the comb value is 2, The value is 8; when comb is 4, The value is 12; when comb is 8, The value has not been determined yet. For example, when comb is 8, The value can be 6 or 12, or other values.

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation,

The value of N _CS can be an integer greater than or equal to 2, or it can be same.

n _rand is used to determine the random phase rotation on different symbols.

In a possible implementation, the value of n _rand is related to the time slot index and the symbol index, and the expression is:

in, represents the time slot index in a frame, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is a pseudo-random sequence, and the initial value It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

For example, when K=7, it is a scheme of multiplexing PUCCH:

In another possible implementation, the value of n _rand is only related to the symbolic index, and the expression is:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In the first implementation, a random phase factor is added after the cyclic shift formula When the sequence is mapped to symbols, the cyclic shifts of SRSs of different symbols on the same port are different, which reduces interference between terminals and improves the accuracy of delay estimation.

Optionally, in a second implementation, the random phase factor is:

The cyclic shift phase α _i of the sequence satisfies the following formula:

Where i represents the i-th port and l represents the number of symbols;

Indicates the maximum cyclic displacement value, which is related to the comb value. In the current standard, when the comb value is 2, The value is 8; when comb is 4, The value is 12; when comb is 8, The value has not been determined yet. For example, when comb is 8, The value can be 6 or 12, or other values.

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

represents the granularity of random phase rotation,

The value of N _CS can be an integer greater than or equal to 2, or it can be same.

n _rand is used to determine the random phase rotation on different symbols.

In a possible implementation, the value of n _rand is related to the time slot index and the symbol index, and the expression is:

in, represents the time slot index in a frame, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is a pseudo-random sequence, and the initial value It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation, the value of n _rand is only related to the symbolic index, and the expression is:

Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In the second implementation, by adding a random phase factor to α _i,l The cyclic shift of each symbol is different, which can effectively reduce the interference between terminals, improve the accuracy of positioning parameter estimation, and thus improve the positioning accuracy.

Those skilled in the art should understand that the sequences in the above implementation manner 1 and implementation manner 2 are pseudo-random sequences.

Optionally, in a third implementation, a random phase rotation is added to each symbol, and the expression of the cyclic shift is:

in,

Alternatively, Substituting into α _i,l , we get the following expression:

Where i represents the i-th port and l represents the number of symbols;

Indicates the maximum cyclic displacement value, which is related to the comb value. In the current standard, when the comb value is 2, The value is 8; when comb is 4, The value is 12; when comb is 8, The value has not been determined yet. For example, when comb is 8, The value can be 6 or 12, or other values.

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

For a low peak-to-average ratio sequence (sequence length < 36), when the sequence length M _ZC ∈ {6, 12, 18, 24}, the sequence expression is:

At this time, if Substitute into The following expression is obtained:

where u∈{0, 1, ..., 29}, Indicates the length of a sequence corresponding to u values, as shown in Tables 1 to 4. In addition, The value of can also refer to 3GPP TS38.211.

When the sequence length is M _ZC = 30, the sequence expression is:

At this time, if Substitute into The following expression is obtained:

Corresponding The expression is:

u can be a preset value or configured by the network device, for example, by:

The first type is that u takes the same value as For example, the value of u is related to The same value: When the value is 1, u is 1; when When the value is 2, u is 2; When the value is 3, the value of u is 3. The corresponding manner is not limited to this.

The second type is that u takes the same value as The value is related to the current port number. For example, the total number of ports is 2, The value is 12. The value is 2, p _i =i+1000, i∈{0,1}, the number of consecutive SRS symbols (in one time slot) is 12, and port 1 corresponds to When the phase rotation on each symbol is 2, it corresponds to the sequence value of sequence length M _ZC = 12 and u = 2. The corresponding phase rotation on port 2 is When t is 8, the corresponding phase rotation on each symbol corresponds to a sequence value with a sequence length of M _ZC =18 and u=2. The above is only an example, and the corresponding manner is not limited thereto.

The third type is that u takes the same value as Related to the value of s, s represents the number of low peak-to-average ratio sequence groups offset. For example, u is equal to The value is added to the s value: when s is 1, When the value is 1, u takes the value of 2; when When the value is 2, the value of u is 3; When the value is 3, the value of u is 4. The above is just an example, and the corresponding method is not limited to this.

The fourth type, u value is related to the current port number and s value, s represents the number of low peak-to-average ratio sequence groups offset. is 2, s is 2, u=2 corresponding to port 1, and u=3 corresponding to port 2.

p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, is the number of consecutive symbols in a time slot;

In another possible implementation, the random phase factor is:

The SRS sequence satisfies the following formula:

in, For a low peak-to-average ratio sequence, is a low peak-to-average ratio base sequence; _pi represents the current port number, l′ represents the number of symbols or symbol index or symbol number is the number of consecutive symbols of the SRS resource in a time slot;

K _TC is the comb value, is the number of resource blocks in one subcarrier, m _{SRS, and the value of b} is related to the frequency hopping parameter; for the description of the frequency hopping parameter, please refer to the method embodiment.

Cyclic shift phase

in,

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

δ = log ₂ (K _TC );

n _rand is used to determine the random phase rotation on different symbols;

The value of n _rand can be configured by the network device, for example, to any rational number;

Alternatively, n _rand satisfies the following formula:

in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or the symbol index or the symbol number in the time slot, and N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is a pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0;

Alternatively, n _rand satisfies the following formula:

Where l represents the symbol index in the slot, N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0.

In another possible implementation, the random phase factor is:

The SRS sequence satisfies the following formula:

or

For a low peak-to-average ratio sequence, is a low peak-to-average ratio base sequence; _pi represents the current port number, l′ represents the number of symbols or symbol index or symbol number is the number of consecutive symbols in a time slot;

K _TC is the comb value, is the number of resource blocks in one subcarrier, m _{SRS, and the value of b} is related to the frequency hopping parameter; for the description of the frequency hopping parameter, reference may be made to the description of the above method embodiment, which will not be repeated here.

Cyclic shift phase

in,

Indicates the maximum cyclic displacement value;

is a circular shift, and its value range is

is the total number of ports; _pi represents the current port number;

u is a preset value, or the value of u is related to the time slot index and the symbol index; is a low peak-to-average ratio sequence base sequence; u may be a preset value or configured by a network device, for example, in the following manner:

The first type is that u takes the same value as For example, the value of u is related to The same value: When the value is 1, u is 1; when When the value is 2, u is 2; When the value is 3, the value of u is 3. The corresponding manner is not limited to this.

The second type is that u takes the same value as The value is related to the current port number. For example, the total number of ports is 2, The value is 12. The value is 2, p _i =i+1000, i∈{0,1}, the number of consecutive SRS symbols (in one time slot) is 12, and port 1 corresponds to When the phase rotation on each symbol is 2, it corresponds to the sequence value of sequence length M _ZC = 12 and u = 2. The corresponding phase rotation on port 2 is When 8 is 8, the corresponding phase rotation on each symbol corresponds to a sequence value with a sequence length of M _ZC =18 and u=2. The above is only an example, and the corresponding manner is not limited thereto.

The third type is that u takes the same value as Related to the value of s, s represents the number of low peak-to-average ratio sequence groups offset. For example, u is equal to The value is added to the s value: when s is 1, When the value is 1, u takes the value of 2; when When the value is 2, the value of u is 3; When the value is 3, the value of u is 4. The above is just an example, and the corresponding method is not limited to this.

The fourth type, u value is related to the current port number and s value, s represents the number of low peak-to-average ratio sequence groups offset. is 2, s is 2, u=2 corresponding to port 1, and u=3 corresponding to port 2.

p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, is the number of consecutive symbols in a time slot;

When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is:

When the sequence length is M _ZC = 30, the sequence expression is:

δ = log ₂ (K _TC ).

The embodiment of the present application introduces a random phase factor so that the cyclic shift on each symbol is different, which can effectively reduce interference between terminals, improve the accuracy of positioning parameter estimation, and thus improve positioning accuracy.

The embodiment of the present application further provides a communication device 700, which can be a terminal device or a chip. The communication device 700 can be used to execute the above method embodiment.

When the communication device 700 is a terminal device, FIG7 shows a simplified schematic diagram of the structure of the terminal device. For ease of understanding and illustration, in FIG7, a mobile phone is used as an example of the terminal device. As shown in FIG7, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used to process communication protocols and communication data, as well as to control the terminal device, execute software programs, process software program data, etc. The memory is mainly used to store software programs and data. The radio frequency circuit is mainly used for conversion between baseband signals and radio frequency signals and processing of radio frequency signals. The antenna is mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input-output devices, such as touch screens, display screens, keyboards, etc., are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal devices may not have input-output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and then outputs the baseband signal to the RF circuit. The RF circuit performs RF processing on the baseband signal and then sends the RF signal outward in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For ease of explanation, only one memory and processor are shown in FIG7. In an actual terminal device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be set independently of the processor or integrated with the processor, and the embodiments of the present application do not limit this.

In the embodiment of the present application, the antenna and the radio frequency circuit with transceiver functions can be regarded as the transceiver unit of the terminal device, and the processor with processing function can be regarded as the processing unit of the terminal device.

As shown in FIG7 , the terminal device includes a transceiver unit 710 and a processing unit 720. The transceiver unit 710 may also be referred to as a transceiver, a transceiver, a transceiver device, etc. The processing unit 720 may also be referred to as a processor, a processing board, a processing module, a processing device, etc. Optionally, the device used to implement the receiving function in the transceiver unit 710 may be regarded as a receiving unit, and the device used to implement the sending function in the transceiver unit 710 may be regarded as a sending unit, that is, the transceiver unit 710 includes a receiving unit and a sending unit. The transceiver unit may sometimes be referred to as a transceiver, a transceiver, or a transceiver circuit, etc. The receiving unit may sometimes be referred to as a receiver, a receiver, or a receiving circuit, etc. The sending unit may sometimes be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

For example, in one implementation, the processing unit 720 is used to execute the above method embodiment. The transceiver unit 710 is used for the related transceiver operations in the above method embodiment. For example, the transceiver unit 710 is used to send one or more symbols.

It should be understood that FIG. 7 is merely an example and not a limitation, and the terminal device including the transceiver unit and the processing unit may not rely on the structure shown in FIG. 7 .

When the communication device 700 is a chip, the chip includes a transceiver unit and a processing unit, wherein the transceiver unit may be an input/output circuit or a communication interface; and the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.

The embodiment of the present application further provides a communication device 800, which may be a network device or a chip. The communication device 800 may be used to execute the above method embodiment.

When the communication device 800 is a network device, for example, a base station. FIG8 shows a simplified schematic diagram of the base station structure. The base station includes a portion 810 and a portion 820. The portion 810 is mainly used for receiving and transmitting radio frequency signals and for converting radio frequency signals into baseband signals; the portion 820 is mainly used for baseband processing, controlling the base station, etc. The portion 810 can generally be referred to as a transceiver unit, a transceiver, a transceiver circuit, or a transceiver, etc. The portion 820 is generally the control center of the base station, which can generally be referred to as a processing unit, and is used to control the base station to perform the processing operations on the network device side in the above method embodiment.

The transceiver unit of part 810 may also be referred to as a transceiver or a transceiver, etc., and includes an antenna and a radio frequency unit, wherein the radio frequency unit is mainly used for radio frequency processing. Optionally, the device used to implement the receiving function in part 810 may be regarded as a receiving unit, and the device used to implement the sending function may be regarded as a sending unit, that is, part 810 includes a receiving unit and a sending unit. The receiving unit may also be referred to as a receiver, a receiver, or a receiving circuit, etc., and the sending unit may be referred to as a transmitter, a transmitter, or a transmitting circuit, etc.

Part 820 may include one or more boards, each of which may include one or more processors and one or more memories. The processor is used to read and execute programs in the memory to implement baseband processing functions and control of the base station. If there are multiple boards, each board can be interconnected to enhance processing capabilities. As an optional implementation, multiple boards may share one or more processors, or multiple boards may share one or more memories, or multiple boards may share one or more processors at the same time.

For example, in one implementation, part 820 is used to perform the above method embodiment. Part 810 is used for the related transceiver operations in the above method embodiment. For example, part 810 is used to receive one or more symbols.

It should be understood that FIG8 is only an example and not a limitation, and the network device including the transceiver unit and the processing unit may not rely on the structure shown in FIG8.

When the communication device 800 is a chip, the chip includes a transceiver unit and a processing unit, wherein the transceiver unit may be an input/output circuit or a communication interface; and the processing unit may be a processor or a microprocessor or an integrated circuit integrated on the chip.

The embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a computer, the computer implements the above method embodiment.

The embodiment of the present application also provides a computer program product including instructions, which, when executed by a computer, enables the computer to implement the above method embodiment.

The explanation of the relevant contents and beneficial effects in any of the communication devices provided above can refer to the corresponding method embodiments provided above, and will not be repeated here.

In an embodiment of the present application, a terminal device or a network device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and a memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through a process, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a windows operating system. The application layer includes applications such as a browser, an address book, a word processing software, and an instant messaging software. In addition, the embodiment of the present application does not specifically limit the specific structure of the execution subject of the method provided in the embodiment of the present application, as long as it can communicate according to the method provided in the embodiment of the present application by running a program that records the code of the method provided in the embodiment of the present application, for example, the execution subject of the method provided in the embodiment of the present application can be a terminal device or a network device, or a functional module in a terminal device or a network device that can call a program and execute the program.

In addition, various aspects or features of the present application can be implemented as methods, devices or products using standard programming and/or engineering techniques. The term "product" used in this application covers computer programs that can be accessed from any computer-readable device, carrier or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks or tapes, etc.), optical disks (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks or key drives, etc.). In addition, the various storage media described herein may represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing and/or carrying instructions and/or data.

It should be understood that the processor mentioned in the embodiments of the present application may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

It should also be understood that the memory mentioned in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus random access memory (Direct Rambus RAM, DR RAM).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, the memory (storage module) is integrated in the processor.

It should be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

Those of ordinary skill in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product is stored in a storage medium and includes several instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims (45)

1. A method for reference signal processing, comprising: Generate a sequence of reference signals, wherein a cyclic shift phase α _i,l of the sequence is related to a random phase factor, wherein i represents that the reference signal is sent using an i-th port, and l represents the number of symbols or a symbol index or a symbol number of the sequence mapping, wherein the random phase factor represents that the sequence mapping has different cyclic shift values at different symbols; Mapping the sequence to one or more symbols and sending them; The random phase factor is related to a symbol index corresponding to a symbol mapped by the sequence and a time slot index corresponding to a mapped time slot. 2. The method according to claim 1, characterized in that the random phase factor is: The cyclic shift phase α _i,l satisfies the following formula: or, in, Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; represents the granularity of random phase rotation; N _CS is an integer greater than or equal to 2, or same; n _rand is used to determine the random phase rotation on different symbols; Among them, n _rand satisfies the following formula: in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the symbol index or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0; Alternatively, n _rand satisfies the following formula: Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 3. The method according to claim 1, characterized in that the random phase factor is The cyclic shift phase α _i,l satisfies the following formula: or, in, Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; represents the granularity of random phase rotation; N _CS is an integer greater than or equal to 2, or same; n _rand is used to determine the random phase rotation on different symbols; Among them, n _rand satisfies the following formula: in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the symbol index or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0; Alternatively, n _rand satisfies the following formula: Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 4. The method according to claim 2 or 3, characterized in that the sequence is a pseudo-random sequence. 5. The method according to claim 1, characterized in that the random phase factor is: or The cyclic shift phase α _i,l satisfies the following formula: or, Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; u is a preset value, or the value of u is related to the time slot index and the symbol index; is a low peak-to-average ratio sequence base sequence; when the sequence length is M _ZC ∈{6,12,18,24}, the sequence expression is: When the sequence length is M _ZC = 30, the sequence expression is: 6. A reference signal processing method, characterized in that the method comprises: receiving one or more symbols from a terminal; Obtaining a reference signal, wherein a cyclic shift phase α _i,l of a sequence of the reference signal is related to a random phase factor, wherein i indicates that the reference signal is sent through an i-th port, and l indicates the number of symbols or a symbol index or a symbol number mapped by the sequence; Measuring the reference signal, and determining the location information of the terminal according to the measurement result; The random phase factor is related to a symbol index corresponding to a symbol mapped by the sequence and a time slot index of a mapped time slot. 7. The method according to claim 6, characterized in that the random factor is: The cyclic shift phase α _i,l satisfies the following formula: or, in, Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; n _rand is used to represent random phase rotation on different symbols, where n _rand satisfies the following formula: in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the symbol index or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0; Alternatively, n _rand satisfies the following formula: Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 8. The method according to claim 6, characterized in that the random phase factor is: The cyclic shift phase α _i,l satisfies the following formula: Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is represents the granularity of random phase rotation; is the total number of ports; _pi represents the current port number; n _rand represents random phase rotation on different symbols, where n _rand satisfies the following formula: Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0; Alternatively, n _rand satisfies the following formula: Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 9. The method according to claim 7 or 8, characterized in that the sequence is a pseudo-random sequence. 10. The method according to claim 6, characterized in that the random phase factor is or, The cyclic shift phase α _i,l satisfies the following formula: or, Where i represents the i-th port and l represents the number of symbols; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; p _i represents the current port number; u is a preset value, or the value of u is related to the time slot index and the symbol index; r _u,v () is a low peak-to-average ratio base sequence; when the sequence length is M _ZC ∈{6,12,18,24}, the sequence expression is: When the sequence length is M _zC = 30, the sequence expression is: 11. A device for reference signal processing, comprising: A generating unit, configured to generate a sequence of reference signals, wherein a cyclic shift phase α _i,l of the sequence is related to a random phase factor, wherein i represents that the reference signal is sent using an i-th port, and l represents the number of symbols or symbol index or symbol number mapped by the sequence; The generating unit is further configured to map the sequence to one or more symbols; A sending unit, configured to send the one or more symbols; The random phase factor is related to a symbol index corresponding to a symbol mapped by the sequence and a time slot index of a mapped time slot. 12. The device according to claim 11, characterized in that the random phase factor is: The cyclic shift phase α _i,l satisfies the following formula: or, in, Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; represents the granularity of random phase rotation; N _CS is an integer greater than or equal to 2, or same; n _rand is used to determine the random phase rotation on different symbols; Among them, n _rand satisfies the following formula: in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0; Alternatively, n _rand satisfies the following formula: Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 13. The device according to claim 11, characterized in that the random phase factor is: The cyclic shift phase α _i,l satisfies the following formula: in, Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; represents the granularity of random phase rotation; N _CS is an integer greater than or equal to 2, or same; n _rand is used to determine the random phase rotation on different symbols; Among them, n _rand satisfies the following formula: in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or symbol index or symbol number in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0; Alternatively, n _rand satisfies the following formula: Where l represents the symbol index in the slot, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 14. The device according to claim 12 or 13, characterized in that the sequence is a pseudo-random sequence. 15. The device according to claim 11, characterized in that the random phase factor is: or, The cyclic shift phase α _i,l satisfies the following formula: or, Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; u is a preset value, or the value of u is related to the time slot index and the symbol index; is a low peak-to-average ratio sequence base sequence; when the sequence length is M _ZC ∈{6,12,18,24}, the sequence expression is: When the sequence length is M _ZC = 30, the sequence expression is: 16. A reference signal processing device, comprising: A receiving unit, configured to receive one or more symbols from a terminal; A processing unit, configured to obtain a reference signal, wherein a cyclic shift phase α _i,l of a sequence of the reference signal is related to a random phase factor, wherein i indicates that the reference signal is sent through an i-th port, and l indicates the number of symbols or a symbol index or a symbol number mapped to the sequence; The processing unit is further configured to measure the reference signal, and determine the location information of the terminal according to the measurement result; The random phase factor is related to a symbol index corresponding to a symbol mapped by the sequence and a time slot index of a mapped time slot. 17. The device according to claim 16, wherein the random factor is: The cyclic shift phase α _i,l satisfies the following formula: or, in, Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; n _rand is used to represent random phase rotation on different symbols, where n _rand satisfies the following formula: in, represents the time slot index mapped by the pseudo-random sequence, l represents the symbol index in the time slot, c(i) is the pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index, and K is an integer greater than or equal to 0; Alternatively, n _rand satisfies the following formula: Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence. It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 18. The device according to claim 16, wherein the random phase factor is: The phase α _il of the cyclic shift satisfies the following formula: Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is represents the granularity of random phase rotation; is the total number of ports; _pi represents the current port number; n _rand represents random phase rotation on different symbols, where n _rand satisfies the following formula: Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer ≥ 0; Alternatively, n _rand satisfies the following formula: Where l represents the number of symbols or symbol index or symbol number in the slot, and c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 19. The device according to claim 17 or 18, characterized in that the sequence is a pseudo-random sequence. 20. The device according to claim 16, characterized in that the random phase factor is or, The cyclic shift phase α _i,l satisfies the following formula: or, Wherein, i represents the i-th port, l represents the symbol number or symbol index or symbol number; Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; p _i represents the current port number; u is a preset value, or the value of u is related to the time slot index and the symbol index; is a low peak-to-average ratio sequence base sequence; when the sequence length is M _ZC ∈{6,12,18,24}, the sequence expression is: When the sequence length is M _ZC = 30, the sequence expression is: Indicates the length of a sequence corresponding to u value. 21. A computer-readable storage medium storing computer instructions, which, when executed, causes a computer to execute the method according to any one of claims 1 to 5, or causes a computer to execute the method according to any one of claims 6 to 10. 22. A reference signal processing method, comprising: generating a sequence of reference signals; Mapping the sequence to one or more symbols, wherein the sequences on different symbols have different cyclic shifts; Sending the one or more symbols mapped with the sequence to a network device; The cyclic shift phase α _i,l of the sequence is related to a random phase factor, and the random phase factor is related to a symbol index corresponding to a symbol mapped by the sequence and a time slot index of a mapped time slot. 23. The method according to claim 22, characterized in that the reference signal is an SRS, and its sequence satisfies the following formula: in, It is a low peak-to-average ratio base sequence; When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is: When the sequence length is M _ZC = 30, the sequence expression is: p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, NSymbSRS is the number of consecutive symbols of the SRS resource in one time slot; is the comb value, is the number of resource blocks in a subcarrier, and the value of m _SRSb is related to the frequency hopping parameter; Cyclic shift phase in, Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; δ = log ₂ (K _TC ); n _rand is used to determine the random phase rotation on different symbols; Indicates the length of a sequence corresponding to u value. 24. The method of claim 23, wherein n _rand is a rational number received from a network device. 25. The method according to claim 23, characterized in that the n _rand satisfies the following formula: in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or the symbol index or the symbol number in the time slot, and N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is a pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index. The value of K is an integer greater than or equal to 0. 26. The method according to claim 23, characterized in that the n _rand satisfies the following formula: Where l represents the symbol index in the slot, N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 27. The method according to claim 22, characterized in that the reference signal is an SRS, and its sequence satisfies the following formula: or, It is a low peak-to-average ratio base sequence; When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is: When the sequence length is M _ZC = 30, the sequence expression is: p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, NSymbSRS is the number of consecutive symbols in a time slot; is the comb value, is the number of resource blocks in a subcarrier, and the value of m _SRS,b is related to the frequency hopping parameter; Cyclic shift phase in, Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number. 28. The method according to any one of claims 22 to 26, characterized in that the method further comprises: Receive reference signal configuration information from a network device, where the configuration information includes one or more of the following information: Random phase rotation type, random phase rotation value group n _rand , random phase rotation granularity N _CS and binary bit number K , low peak-to-average ratio sequence length M _ZC , low peak-to-average ratio sequence group number offset; The random phase rotation types include pseudo-random sequences and low peak-to-average ratio sequences. 29. A device for reference signal processing, comprising: A processing unit, configured to generate a sequence of a reference signal; and map the sequence to one or more symbols, wherein the sequences on different symbols have different cyclic shifts; A sending unit, configured to send the one or more symbols mapped with the sequence to a network device; The cyclic shift phase α _i,l of the sequence is related to a random phase factor, and the random phase factor is related to a symbol index corresponding to a symbol mapped by the sequence and a time slot index of a mapped time slot. 30. The device according to claim 29, wherein the reference signal is an SRS, and its sequence satisfies the following formula: in, It is a low peak-to-average ratio base sequence; When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is: When the sequence length is M _ZC = 30, the sequence expression is: p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, 1, NSymbSRS is the number of consecutive symbols of the SRS resource in a time slot; K _TC is the comb value, is the number of resource blocks in a subcarrier, m _{SRS, and the value of b} is related to the frequency hopping parameter; Cyclic shift phase in, Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; δ = log ₂ (K _TC ); n _rand is used to determine the random phase rotation on different symbols; Indicates the length of a sequence corresponding to u value. 31. The apparatus of claim 30, wherein the n _rand is received from a network device. 32. The device according to claim 30, characterized in that the n _rand satisfies the following formula: in, represents the time slot index to which the pseudo-random sequence is mapped, l represents the number of symbols or the symbol index or the symbol number in the time slot, and N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is a pseudo-random sequence, and the initial value c _init is Represents a sequence index or resource index. The value of K is an integer greater than or equal to 0. 33. The device according to claim 30, characterized in that the n _rand satisfies the following formula: Where l represents the symbol index in the slot, N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 34. The device according to claim 29, wherein the reference signal is an SRS, and its sequence satisfies the following formula: or, It is a low peak-to-average ratio base sequence; When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is: When the sequence length is M _ZC = 30, the sequence expression is: p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, NSymbSRS is the number of consecutive symbols in a time slot; K _TC is the comb value, is the number of resource blocks in a subcarrier, and the value of m _SRSb is related to the frequency hopping parameter; Cyclic shift phase in, Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number. 35. The apparatus according to any one of claims 29 to 34, further comprising a receiving unit, configured to receive reference signal configuration information from a network device, wherein the configuration information comprises one or more of the following information: Random phase rotation type, random phase rotation value group, random phase rotation granularity N _CS and binary bit number K, low peak-to-average ratio sequence length M _ZC , low peak-to-average ratio sequence group number offset; The random phase rotation types include pseudo-random sequences and low peak-to-average ratio sequences. 36. A method for reference signal processing, comprising: Receiving one or more symbols, to which a reference signal is mapped; wherein reference signal sequences on different symbols have different cyclic shifts; measuring the reference signal; The cyclic shift phase α _i,l of the reference signal sequence is related to a random phase factor, and the random phase factor is related to a symbol index corresponding to a symbol mapped by the sequence and a time slot index of a mapped time slot. 37. A device for reference signal processing, comprising: a receiving unit, configured to receive one or more symbols, on which a reference signal is mapped, wherein reference signal sequences on different symbols have different cyclic shifts; and a processing unit, configured to measure the reference signal; The cyclic shift phase α _i,l of the reference signal sequence is related to a random phase factor, and the random phase factor is related to a symbol index corresponding to a symbol mapped by the sequence and a time slot index of a mapped time slot. 38. The method or apparatus according to claim 36 or 37, wherein the reference signal is an SRS, and its sequence satisfies the following formula: in, For a low peak-to-average ratio sequence, It is a low peak-to-average ratio base sequence; When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is: When the sequence length is M _ZC = 30, the sequence expression is: p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, NSymbSRS is the number of consecutive symbols of the SRS resource in one time slot; K _TC is the comb value, is the number of resource blocks in a subcarrier, and the value of m _SRS,b is related to the frequency hopping parameter; Cyclic shift phase in, Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number; δ = log ₂ (K _TC ); n _rand is used to determine the random phase rotation on different symbols; Indicates the length of a sequence corresponding to u value. 39. The method or device according to claim 38, characterized in that the n _rand satisfies the following formula: Where l represents the symbol index in the slot, N _CS is an integer greater than or equal to 2, or N _CS is equal to Same, c(i) is the initial value of the pseudo-random sequence It can be a sequence index or a resource index, and the value of K can be an integer greater than or equal to 0. 40. The method or apparatus according to claim 38, wherein the reference signal is an SRS, and its sequence satisfies the following formula: in, or, Will Substituting into the above formula, we get: Will Substituting into the above formula, we get: in, For a low peak-to-average ratio sequence, It is a low peak-to-average ratio base sequence; When the sequence length is M _ZC ∈ {6, 12, 18, 24}, the sequence expression is: When the sequence length is M _ZC = 30, the sequence expression is: p _i represents the current port number, l′ represents the symbol number or symbol index or symbol number, NSymbSRS is the number of consecutive symbols in a time slot; K _TC is the comb value, is the number of resource blocks in a subcarrier, and the value of m _SRSb is related to the frequency hopping parameters b and c; Cyclic shift phase in, Indicates the maximum cyclic displacement value; is a circular shift, and its value range is is the total number of ports; _pi represents the current port number. 41. The method according to claim 36, characterized in that the method further comprises: A location information request is received from a positioning device, where the location information request carries one or more of the following information: Random phase rotation type, random phase rotation value group, random phase rotation granularity N _CS and binary bit number K, low peak-to-average ratio sequence length M _ZC , low peak-to-average ratio sequence group number offset; The random phase rotation types include pseudo-random sequences and low peak-to-average ratio sequences. 42. The method according to claim 36 or 41, characterized in that the method further comprises: Send a location information response to the positioning device. 43. The method according to claim 36, 41 or 42, characterized in that the method further comprises: A location measurement request is received from a positioning device, where the location measurement request carries one or more of the following information: Random phase rotation type, random phase rotation value group, random phase rotation granularity N _CS and binary bit number K, low peak-to-average ratio sequence length M _ZC , low peak-to-average ratio sequence group number offset. 44. The apparatus according to claim 37, wherein the receiving unit is further configured to receive a location information request from a positioning device, wherein the location information request carries one or more of the following information: Random phase rotation type, random phase rotation value group, random phase rotation granularity N _CS and binary bit number K, low peak-to-average ratio sequence length M _ZC , low peak-to-average ratio sequence group number offset; The random phase rotation types include pseudo-random sequences and low peak-to-average ratio sequences. 45. The device according to claim 37 or 44 is characterized in that the device also includes a sending unit for sending a location information response to a positioning device.