CN114287123A

CN114287123A - Reference signal processing method, device and system

Info

Publication number: CN114287123A
Application number: CN201980099651.1A
Authority: CN
Inventors: 于莹洁; 史桢宇; 黄甦
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-30
Publication date: 2022-04-05
Anticipated expiration: 2039-09-30
Also published as: WO2021046948A1; CN117834364A; CN114287123B; WO2021046823A1

Abstract

A method, a device and a system for processing a reference signal are provided. Wherein the method comprises generating a sequence of reference signals, wherein a phase a of a cyclic shift of the sequence of reference signals_i,lIs related to a random phase factor, wherein i represents that the reference signal is transmitted through the ith port, and l represents the symbol number or symbol index or symbol number of the sequence mapping; and mapping the sequence to one or more symbols and transmitting. When the method generates the sequence of the reference signal, the phase rotation of the symbol level is added, so that the cyclic displacement of the reference signals of different symbols on the same port is different, the interference between terminals can be reduced, and the precision of time delay estimation is improved.

Description

Reference signal processing method, device and system

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method, an apparatus, and a system for processing a reference signal.

Background

Positioning technologies supported in a New Radio (NR) are explicitly defined in 3GPP TR 38.855, for example, a downlink positioning technology, an uplink positioning technology, and an uplink and downlink positioning technology. The uplink positioning and uplink and downlink positioning techniques require a base station to measure a Sounding Reference Signal (SRS) sent by a terminal.

In the existing standard, the number of consecutive symbols in a slot supporting the SRS is 1,2,4,8,12, the number of port is 1,2,4, the comb (comb) value is 2,4,8, and the comb value is N, which means that the SRS is transmitted at the granularity of every N subcarriers, and the SRS transmitted by N terminals can be frequency-divided. For example, as shown in fig. 1, the comb value is 2, and the number of consecutive symbols is 2. When the number of transmitting ports is greater than 1, the ports use the same Resource Element (RE) and sequence, and then cyclic shift is used to distinguish different ports.

The SRS sequence expression of the existing NR system is:

wherein the number of symbols

Is the number of consecutive symbols within a time slot,

in order to obtain a sequence with a low peak-to-average ratio,

is a low peak-to-average ratio sequence base sequence; p is a radical of_iRepresents the current port number, δ ═ log₂(K _TC)，

K _TCIs the value of the comb, and is,

is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter. Cyclically shifted phase alpha_iThe phase alpha of the cyclic shift is related to the maximum cyclic shift number, the total number of the antenna ports, the current port number and the cyclic shift_iThe expression is as follows:

wherein the content of the first and second substances,

indicates the ith portA cyclic shift of the first and second bits of the first bit stream,

is the maximum cyclic shift value of the SRS, when the comb value is 2,

the value is 8; when the comb value is 4, the number of the comb is 4,

the value is 12.

Representing a cyclic shift, having a value range of

Is the total port number, p_iIndicating the current port number.

In the prior art, the SRSs of different symbols on the same port have the same cyclic displacement, which causes the cross-correlation peak value of the SRS transmitted by a terminal to be too close to that of the SRS transmitted by other terminals, and interference between the terminals exists, thereby affecting the accuracy of time delay estimation.

Disclosure of Invention

In order to solve the problem that in the prior art, the SRSs of different symbols on the same port have the same cyclic displacement, which causes serious interference between terminals and affects the delay estimation accuracy, embodiments of the present application provide a method, an apparatus, and a system for processing reference signals, so that the cyclic displacements of the SRSs of different symbols on the same port are different, interference between terminals is reduced, and the delay estimation accuracy is improved.

In a first aspect, an embodiment of the present application provides a method for reference signal processing, including: generating a sequence of reference signals, wherein a phase a of a cyclic shift of the sequence_i,iCorrelating with a random phase factor, wherein i represents that the reference signal is transmitted by using the ith port, and l represents the number of symbols or the index of symbols or the number of symbols of the sequence mapping, or correlating with a random phase factor, wherein the random phase factor represents that the sequence mapping has different cyclic shift values at different symbols; and mapping the sequence to one or more symbols and transmitting. According to the technical scheme provided by the embodiment of the application, the random phase factors are introduced, so that the sequence mapping is different in cyclic shift on each symbol, the self-correlation of the terminal sending the reference signals is staggered with the cross-correlation peak value of the reference signals sent by other terminals, the interference between the terminals can be effectively reduced, the accuracy of positioning parameter estimation is improved, and the positioning precision is further improved.

In a 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 slot index corresponding to a slot mapped by the sequence; alternatively, low peak-to-average ratio sequences.

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

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and

the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,

a slot index representing the mapping of said pseudo-random sequence,/' a symbol number or symbol index or symbol number within said slot, c (i) is a pseudo-random sequence, an initial value c_initIs composed of

Representing sequence index or resource index, and K is an integer greater than or equal to 0;

or, n_randThe following formula is satisfied:

wherein l represents the symbol index in the slot, and c (i) is the initial value of the pseudo-random sequence

The value of K may be an integer greater than or equal to 0.

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

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and

the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,

or, n_randThe following formula is satisfied:

wherein 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

The value of K may be an integer greater than or equal to 0.

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

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and

the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,

a slot index representing the mapping of said pseudo-random sequence,/' a symbol index within said slot, c (i) is a pseudo-random sequence, an initial value c_initIs composed of

or, n_randThe following formula is satisfied:

The value of K may be an integer greater than or equal to 0.

In another possible implementation, the random phase factor is

The phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and

the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,

or, n_randThe following formula is satisfied:

The value of K may be an integer greater than or equal to 0.

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

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

or

The cyclic shift phase a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

u is a preset value, or the value of u is related to a time slot index and a symbol index;

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

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:

according to the technical scheme provided by the embodiment of the application, the random phase factors are introduced, so that the sequence mapping is different in cyclic shift on each symbol, the self-correlation of the terminal sending the reference signals is staggered with the cross-correlation peak value of the reference signals sent by other terminals, the interference between the terminals can be effectively reduced, the accuracy of positioning parameter estimation is improved, and the positioning precision is further improved.

In a second aspect, an embodiment of the present application further provides a reference signal processing method, where the method includes: receiving one or more symbols from a terminal; obtaining a reference signal, wherein a phase a of a cyclic shift of a sequence of the reference signal_i,lCorrelating with a random phase factor, wherein i denotes that the reference signal is transmitted through the ith port and i denotes a symbol number or a symbol index or a symbol number of the sequence map, or correlating with a random phase factor, wherein the random phase factor denotes that the sequence map has different cyclic shift values at different symbols; the reference signal is measured.

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 slot index corresponding to a slot mapped by the sequence; alternatively, low peak-to-average ratio sequences. In another possible implementation manner, the random factor is:

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

n _randfor representingRandom phase rotation on different symbols, where n_randThe following formula is satisfied:

wherein the content of the first and second substances,

or, n_randThe following formula is satisfied:

The value of K may be an integer greater than or equal to 0.

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

the phase of the cyclic shift a_i,lThe following formula is satisfied:

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Granularity representing random phase rotation;

n _randrepresenting random phase rotations on different symbols, where n_randThe following formula is satisfied:

Can be sequence index or resource index, K value can be integer more than or equal to 0;

or, n_randThe following formula is satisfied:

The value of K may be an integer greater than or equal to 0.

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

In another possible implementation, the random phase factor is

Alternatively, the first and second electrodes may be,

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number;

p _irepresenting a current port number;

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

when the sequence length is M_ZcE {6,12,18,24}, the sequence expression is:

in a third aspect, an embodiment of the present application further provides an apparatus for reference signal processing, including: a processing unit for generating a sequence of reference signals, wherein a phase a of a cyclic shift of the sequence_i,lCorrelating with a random phase factor, wherein i represents that the reference signal is transmitted by using the ith port, and l represents the number of symbols or index of symbols or number of symbols of the sequence map, or correlating with a random phase factor, wherein the random phase factor represents that the sequence map has different cyclic shift values at different symbols; a processing unit further configured to map the sequence to one or more symbols; a transmitting unit configured to transmit the one or more symbols.

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 slot index corresponding to a slot mapped by the sequence; alternatively, low peak-to-average ratio sequences.

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

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and

the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,

Representing sequence index or resource index, and K is an integer greater than or equal to 0; or, n_randThe following formula is satisfied:

The value of K may be an integer greater than or equal to 0.

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

the phase of the cyclic shift a_i,lThe following formula is satisfied:

wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and

the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,

Representing sequence index or resource index, K being greater than or equal toAn integer at 0; or, n_randThe following formula is satisfied:

The value of K may be an integer greater than or equal to 0.

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

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

alternatively, the first and second electrodes may be,

the cyclic shift phase a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

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

fourth aspect of the inventionAn apparatus for reference signal processing, comprising: a receiving unit for receiving one or more symbols from a terminal, a processing unit for obtaining a reference signal, wherein a phase α of a cyclic shift of a sequence of the reference signal_i,lCorrelating with a random phase factor, wherein i denotes that the reference signal is transmitted through the ith port and i denotes a symbol number or a symbol index or a symbol number of the sequence map, or correlating with a random phase factor, wherein the random phase factor denotes that the sequence map has different cyclic shift values at different symbols; a processing unit further configured to measure the reference signal.

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

In a possible implementation manner, the random factor is:

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

n _randfor expressing random phase rotations on different symbols, where n_randThe following formula is satisfied:

wherein the content of the first and second substances,

The value of K may be an integer greater than or equal to 0.

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

the phase of the cyclic shift a_i,lThe following formula is satisfied:

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Granularity representing random phase rotation;

or, n_randThe following formula is satisfied:

wherein l represents the number of symbols or symbol index or symbol number within a slot, and c (i) is a dummyInitial value of random sequence

The value of K may be an integer greater than or equal to 0.

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

In another possible implementation, the random phase factor is

Alternatively, the first and second electrodes may be,

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number;

p _irepresenting a current port number;

with reference to any one of the first aspect to the fourth aspect, in another possible implementation manner, the random phase factor is:

the SRS sequence satisfies the following formula:

wherein p is_iIndicating the current port number, l' indicating the number of symbols or index of symbols or number of symbols

The number of continuous symbols in one time slot is the SRS resource;

K _TCis the value of the comb, and is,

is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter;

cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

δ＝log ₂(K _TC)；

n _randfor determining random phase rotations on different symbols;

n _randthe value can be any rational number;

or, n_randThe following formula is satisfied:

wherein the content of the first and second substances,

a slot index representing the pseudo-random sequence mapping, l represents the number of symbols or symbol index or symbol number within the slot, N_CSThe value is an integer of 2 or more, or, N_CSValue and

in the same way, c (i) is a pseudo-random sequence, the initial value c_initIs composed of

or, n_randThe following formula is satisfied:

where l represents the symbol index within the slot, N_CSThe value is an integer of 2 or more, or, N_CSValue and

same, c (i) is the initial value of the pseudo random sequence

The value of K may be an integer greater than or equal to 0.

the SRS sequence satisfies the following formula:

or

Is the number of continuous symbols in a time slot;

K _TCis the value of the comb, and is,

cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

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

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

δ＝log ₂(K _TC)。

in a fifth aspect, embodiments of the present application further provide a computer-readable storage medium, which stores instructions that, when executed on a computer, cause the computer to perform the method according to the first aspect or any one of the possible implementations of the first aspect, or cause the computer to perform the method according to the second aspect or any one of the possible implementations of the second aspect.

In a sixth aspect, the present application further provides an apparatus, including a processor and a memory, where the memory stores instructions that, when executed, cause the processor to perform the method according to the first aspect or any one of the possible implementations of the first aspect, or cause the computer to perform the method according to the second aspect or any one of the possible implementations of the second aspect.

In a seventh aspect, an embodiment of the present application further provides a communication system, including a network device and a terminal device, where the terminal device includes the apparatus according to any one of the possible implementation manners of the third aspect or the third aspect, and the network device includes the apparatus according to any one of the possible implementation manners of the fourth aspect or the fourth aspect.

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

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

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

In an eleventh aspect, an embodiment of the present application further provides an apparatus for reference signal processing, including: a receiving unit, configured to receive one or more symbols, to which reference signals are mapped, where reference signal sequences on different symbols have different cyclic shifts; and a processing unit for measuring the reference signal.

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

wherein the content of the first and second substances,

in order to obtain a sequence with a low peak-to-average ratio,

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

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

p _iindicating the current port number, l' indicates the number of symbols or symbol index or symbol number,

the number of continuous symbols in one time slot is the SRS resource;

K _TCis the value of the comb, and is,

cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

δ＝log ₂(K _TC)；

n _randfor determining random phase rotations on different symbols;

indicating u corresponds under a sequence length

The value is obtained.

With reference to any one of the eighth aspect to the eleventh aspect, in another possible implementation manner, n_randThe following formula is satisfied:

wherein the content of the first and second substances,

Presentation orderColumn index or resource index, and K is an integer greater than or equal to 0.

same, c (i) is the initial value of the pseudo random sequence

The value of K may be an integer greater than or equal to 0.

With reference to any one of the eighth aspect to the eleventh aspect, in another possible implementation manner, the reference signal is an SRS, and a sequence thereof satisfies the following formula:

wherein the content of the first and second substances,

alternatively, the first and second electrodes may be,

will be provided with

Substituting the formula to obtain:

will be provided with

Substituting the formula to obtain:

wherein the content of the first and second substances,

in order to obtain a sequence with a low peak-to-average ratio,

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

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

is the number of continuous symbols in a time slot;

K _TCis the value of the comb, and is,

is the number of resource blocks in a subcarrier, m_SRS,bIs related to the hopping parameters b and c.

Cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iIndicating the current port number.

With reference to any one of the eighth aspect to the eleventh aspect, in another possible implementation manner, the sequence length M_ZCIs received from a network device.

Drawings

Fig. 1 is a diagram of SRS frequency division multiplexing when the comb value in one slot is 2;

fig. 2 is a schematic diagram of a network structure provided in an embodiment of the present application;

fig. 3 is a schematic diagram of another network structure provided in the embodiment of the present application;

fig. 4A is a schematic diagram of a method for reference signal processing according to an embodiment of the present application;

fig. 4B is a schematic diagram of another method for reference signal processing according to an embodiment of the present disclosure;

FIG. 5 is a schematic view of an apparatus provided by an embodiment of the present application;

FIG. 6 is a schematic view of another apparatus provided in embodiments of the present application;

fig. 7 is a schematic diagram of a terminal device provided in an embodiment of the present application;

fig. 8 is a schematic diagram of a network device according to an embodiment of the present application.

Detailed Description

Embodiments of the present application will now be described with reference to the accompanying drawings, and it is to be understood that the described embodiments are merely illustrative of some, but not all, embodiments of the present application. As can be known to those skilled in the art, with the development of technology and the emergence of new scenarios, the technical solution provided in the embodiments of the present application is also applicable to similar technical problems.

The term "and/or" appearing in the present application may be an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this application generally indicates that the former and latter related objects are in an "or" relationship.

The terms "first," "second," and the like in the description and in the claims of the present application and in the above-described drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Moreover, the terms "comprises," "comprising," and any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or modules is not necessarily limited to those steps or modules explicitly listed, but may include other steps or modules not expressly listed or inherent to such process, method, article, or apparatus. The naming or numbering of the steps appearing in the present application does not mean that the steps in the method flow have to be executed in the chronological/logical order indicated by the naming or numbering, and the named or numbered process steps may be executed in a modified order depending on the technical purpose to be achieved, as long as the same or similar technical effects are achieved. The division of the modules presented in this application is a logical division, and in practical applications, there may be another division, for example, multiple modules may be combined or integrated into another system, or some features may be omitted, or not executed, and in addition, the shown or discussed coupling or direct coupling or communication connection between each other may be through some interfaces, and the indirect coupling or communication connection between the modules may be in an electrical or other similar form, which is not limited in this application. The modules or sub-modules described as separate components may or may not be physically separated, may or may not be physical modules, or may be distributed in a plurality of circuit modules, and some or all of the modules may be selected according to actual needs to achieve the purpose of the present disclosure.

The technical scheme of the embodiment of the application can be applied to various communication systems, for example: a Long Term Evolution (LTE) system, an LTE Frequency Division Duplex (FDD) system, an LTE Time Division Duplex (TDD) system, a Universal Mobile Telecommunications System (UMTS), a Worldwide Interoperability for Microwave Access (WiMAX) communication system, a fifth generation (5th generation, 5G) system or a New Radio (NR), or a next generation communication system, etc.

For the understanding of the embodiments of the present application, a network architecture suitable for the embodiments of the present application will be described in detail with reference to fig. 2 and 3.

Fig. 2 shows a schematic diagram of an architecture 200 suitable for use with embodiments of the present application. As shown in fig. 2, the network architecture may specifically include the following network elements:

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

Wherein, fig. 2 and fig. 3 both take the terminal device as the UE as an example.

2. A network device: the network device may be a device for communicating with a terminal device, where the network device may be an evolved NodeB (eNB or eNodeB) in an LTE system, a Base Transceiver Station (BTS) in a global system for mobile communications (GSM) system or a Code Division Multiple Access (CDMA) system, a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or a network device in 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, and the like, and the present embodiment is not limited.

3. Mobility Management Entity (MME): the method can be used for managing the position information, the safety and the service continuity of the terminal equipment.

4. Location Measurement Unit (LMU) network element: may be integrated into a network device, such as a base station, or may be separate from a base station. And the receiving terminal is responsible for receiving the uplink signal sent by the terminal equipment. In the embodiment of the present application, it is assumed that the LMU has the capability of transmitting a downlink signal.

5. Evolved serving mobile location center (E-SMLC) network element: the method can be used for positioning, for example, referred to as a positioning service center or a positioning management device, and in the embodiment of the present application, the MME and the LMU are both referred to as a positioning management device. The system is used for collecting the measurement information and the position information reported by the base station and the terminal equipment, and is also responsible for carrying out position calculation on the measurement quantity of the base station or the terminal equipment and determining the position of the terminal equipment.

In this architecture, the terminal device may connect to the radio access network via the eNodeB over the LTE-Uu interface. The E-SMLC is connected with the LMU through an SLm interface, and the E-SMLC is connected with the MME through an SLs interface.

Fig. 3 shows another schematic diagram of an architecture 300 suitable for use with embodiments of the present application. As shown, the architecture 300 may specifically include the following network elements:

1. location Management Function (LMF) network elements: the method can be used for positioning, for example, referred to as a positioning service center or a positioning management device, and in the embodiments of the present application, referred to as a positioning management device. The system is used for collecting the measurement information and the position information reported by the base station and the terminal equipment, and is also responsible for carrying out position calculation on the measurement quantity of the base station or the terminal equipment and determining the position of the terminal equipment. The LMF may be a device or component deployed in the core network that provides location functionality for the terminal device.

2. Access and mobility management function (AMF) entity: the method is mainly used for mobility management, access management, and the like, and can be used for implementing functions other than session management in Mobility Management Entity (MME) functions, such as functions of lawful interception, or access authorization (or authentication), and the like. In the embodiment of the present application, the method and the device can be used for implementing the functions of the access and mobility management network element.

The rest of the network elements may refer to the description of the architecture 200, and are not described herein again.

In the architecture 300, a UE is connected to a radio access network (NG-RAN) via a next-generation base station (NG-eNB) and a gNB, respectively, over LTE-Uu and/or NR-Uu interfaces; the radio access network is connected to the core network via the AMF over the NG-C interface. Wherein a next-generation radio access network (NG-RAN) comprises one or more NG-eNBs; the NG-RAN may also include one or more gnbs; the NG-RAN may also include one or more NG-enbs and a gNB. The ng-eNB is an LTE base station accessed to the 5G core network, and the gNB is a 5G base station accessed to the 5G core network. The core network comprises functions of AMF, LMF and the like. The AMF and the LMF are connected through an NLs interface.

The ng-eNB in fig. 2 and 3 may also be replaced by a transmission node (TP) or a transmission and reception node (TRP).

In the embodiments of the present application, the positioning management apparatus is referred to multiple times. The positioning management device represents a network element that can manage a serving cell and a neighbor cell. The location management device may be part of the core network or may be integrated into the access network device. For example, the location management device may be an LMF in the core network shown in fig. 3, or may be an MME and an LMU shown in the figure. The location management device may also be referred to as a location center. The present application does not limit the name of the location management device, and in future evolution technologies, the location management device may be given other names.

It should be understood that the network architecture applied to the embodiments of the present application is only an example, and the network architecture to which the embodiments of the present application are applied is not limited thereto, and any network architecture capable of implementing the functions of the network elements described above is applied to the embodiments 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" may also be referred to as an entity, a device, an apparatus, a module, or the like, and is not particularly limited in this application. In addition, in the present application, for convenience of understanding and explanation, a description of "network element" is omitted in part of the description, for example, an LMF network element is abbreviated as LMF, in which case the "LMF" should be understood as an LMF network element or an LMF entity, and explanation of the same or similar cases is omitted below.

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

It should also be understood that the above nomenclature is used merely to distinguish between different functions and should not be construed as limiting the application in any way, and that the application does not preclude the possibility of employing other nomenclature in 5G networks as well as in other networks in the future. For example, in a 6G network, some or all of the above network elements may follow the terminology in 5G, and may also adopt other names, etc. The description is unified here, and will not be repeated below.

As shown in fig. 4A, an embodiment of the present application provides a method for reference signal processing, including:

step 410: terminal equipment generates a sequence of reference signals, a cycle of said sequencePhase alpha of ring shift_i,lRelating to a random phase factor, wherein i represents that the reference signal is transmitted by using the ith port, and l represents the symbol number or symbol index or symbol number of the sequence mapping, wherein the random phase factor represents that the sequence mapping has different cyclic shift values in different symbols;

step 420: mapping the sequence onto one or more symbols;

step 430: transmitting the one or more symbols.

Step 440: the network equipment receives one or more symbols to obtain the reference signal, wherein the phase alpha of the cyclic shift of the sequence of the reference signal_i,lIs related to a random phase factor, wherein i represents that the reference signal is transmitted through the ith port, and l represents the symbol number or symbol index or symbol number of the sequence mapping;

step 450: and measuring the reference signal to obtain a measurement result.

As shown in fig. 4B, an embodiment of the present application further provides an information configuring method, including:

s401: the positioning device sends a LOCATION INFORMATION REQUEST (LOCATION INFORMATION REQUEST) to the serving base station;

s402: the serving base station transmits SRS configuration information to the terminal, wherein the SRS configuration information comprises one or more of the following information: random phase rotation types, including:

a) using pseudo-random sequences, or using low peak-to-average ratio sequences. This item is optional.

b) The length of the random phase rotation value group (or called as random phase rotation value group) is the same as the number of continuous symbols in one time slot, and each value in the random phase rotation value group corresponds to the number of symbols or the symbol index (in one time slot) in turn. This item is optional. When a plurality of ports are configured, the random phase rotation value set can be a plurality of sets, and the set number and the port number sequentially correspond to each other; when the random phase rotation value is a group, each value in the random phase rotation value group sequentially corresponds to the number of the symbol, and different ports on the same symbol correspond to the same random phase rotation value. For example, the reference signal is mapped to 4 consecutive symbols in one slot, the port number is 2, the random phase rotation value is divided into two groups, and each value in each group may be a rational number. Alternatively, the set of random phase rotation values does not require network device configuration, and can be derived from a formula stored in the terminal, such as the following formula:

wherein the content of the first and second substances,

alternatively, it is obtained by the following formula:

same, c (i) is the initial value of the pseudo random sequence

The value of K may be an integer greater than or equal to 0.

c) Random phase rotation granularity N_CSAnd a binary digit number K. This item is optional. When the terminal obtains the phase offset according to the following formula, the random phase rotates the granularity N_CSAnd the binary digit number K may be configured by the network device to dannie. For example, the terminal generates a random phase rotation value by the following formula:

wherein the content of the first and second substances,

alternatively, the random phase rotation value is generated by the following formula:

same, c (i) is the initial value of the pseudo random sequence

The value of K may be an integer greater than or equal to 0.

d) A low peak-to-average sequence length indicating the selected low peak-to-average sequence length. This item is optional. When the reference signal employs a low peak-to-average ratio sequence, the length of the low peak-to-average ratio sequence may be configured by the network device. For example, the sequence length M mentioned in the examples below_ZC. The length of the low papr sequence should be longer than the number of consecutive symbols in a slot, e.g., the number of consecutive symbols in a slot is 4, the length of the low papr sequence is 6, and the values in the sequence sequentially correspond to the symbol index or the number of symbols (in a slot) from the starting point.

e) And the low peak-to-average ratio sequence group number offset is used for indicating the offset value of the selected low peak-to-average ratio sequence group number and the group number 0. If the number of antenna ports is 2, the number of consecutive symbols in a slot is 4, the length of the low papr sequence is 6, and the number of low papr sequence groups is offset by 1, the number of groups selected starts from group number 1, and the values corresponding to group number 1 are [ -3, 3, -1, -1, 3, -3], the values corresponding to group number 2 are [ -3, -3, -3, 3, 1, -3], respectively, 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, as shown in TS38.211 table 5.2.2.2-1, or table 1 herein. This item is optional and defaults to 0 when not configured.

S403: the service base station sends a LOCATION INFORMATION RESPONSE (LOCATION INFORMATION RESPONSE) to the LOCATION equipment; optionally, the location information responds to SRS configuration information of a portable terminal, where the SRS configuration information includes one or more of the following information:

a) using pseudo-random sequences, or using low peak-to-average ratio sequences

b) Set of random phase rotation values (or called set of random phase rotation values)

c) Random phase rotation granularity N_CSAnd a binary digit number K

d) Low PAPR sequence length indicating the selected low PAPR sequence length

e) A low peak-to-average ratio sequence group number offset for indicating the offset value of the selected low peak-to-average ratio sequence group number and the group number 0

The meaning of the above 5 items of information can be referred to the above description.

S404: the terminal transmits the SRS to the serving base station and/or the neighbor 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 of SRS configuration information:

a) using pseudo-random sequences, or using low peak-to-average ratio sequences

c) Random phase rotation granularity N_CSAnd a binary digit number K

d) Low PAPR sequence length indicating the selected low PAPR sequence length

The meaning of the above 5 items of information can be referred to the above description

S406: the serving base station and the adjacent base station measure the SRS and report the measurement result to the positioning equipment.

Wherein the random phase factor is related to any one or more 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 slot index of the mapped slot; alternatively, by low peak-to-average ratio sequences.

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

cyclically shifted phase alpha_i,lThe following formula is satisfied:

and the maximum cyclic displacement value is expressed and is related to the comb value. In the current standard, when the comb value is 2,

the value is 8; when the comb value is 4, the number of the comb is 4,

a value of 12; when the value of comb is 8, the number of the comb is 8,

the value is not yet determined. For example, when the comb value is 8,

the value can be 6 or 12, and other values can also be adopted.

For cyclic shift, the value range is

the granularity of the random phase rotation is indicated,

N _CSthe value may be an integer of 2 or more, and may be in combination with

The same is true.

n _randFor determining random phase rotations on different symbols.

In one possible implementation, n_randThe value-taking mode is related to the time slot index and the symbol index, and the expression is as follows:

wherein the content of the first and second substances,

indicating the slot index within a frame, l indicating the number of symbols or symbol index or symbol number within a slot, c (i) being a pseudo-random sequence, the initial value

The index may be a sequence index or a resource index, and the value of K may be an integer greater than or equal to 0.

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

in another possible implementation, n_randThe value mode of (a) is only related to the symbol index, and the expression is as follows:

The value of K may be an integer greater than or equal to 0.

In a first implementation, the common part of the cyclic shiftAfter the formula, a random phase factor is added

When the sequence is mapped to the symbol, the cyclic displacements of the SRS of different symbols on the same port are different, the interference between terminals is reduced, and the time delay estimation precision is improved.

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

Cyclically shifted phase alpha_i,lThe following formula is satisfied:

wherein i represents the ith port, and l represents the number of symbols;

the value is 8; when the comb value is 4, the number of the comb is 4,

a value of 12; when the value of comb is 8, the number of the comb is 8,

the value is not yet determined.

For cyclic shift, the value range is

the granularity of the random phase rotation is indicated,

N _CSthe value may be an integer of 2 or more, and may be in combination with

The same is true.

n _randFor determining random phase rotations on different symbols.

wherein the content of the first and second substances,

indicating the slot index within a frame, l indicating the number of symbols or symbols within a slotNumber index or symbol number, c (i) is a pseudo-random sequence, initial value

The value of K may be an integer greater than or equal to 0.

In the second implementation manner, the second implementation manner is realized by adding alpha_i,lUp increasing random phase factor

The cyclic shift on each symbol is different, so that the interference between terminals can be effectively reduced, the accuracy of positioning parameter estimation is improved, and the positioning precision is further improved.

Those skilled in the art will appreciate that the sequences in implementation 1 and implementation 2 described above are pseudo-random sequences.

Illustratively, in a third implementation, a random phase rotation is added on each symbol by a random phase factor of:

or

Cyclically shifted phase alpha_i,lThe expression is as follows:

wherein the content of the first and second substances,

or, will

Substituted into alpha_i,lThe following expression is obtained:

value of 8(ii) a When the comb value is 4, the number of the comb is 4,

a value of 12; when the value of comb is 8, the number of the comb is 8,

the value is not yet determined.

For cyclic shift, the value range is

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

at this time, if will

Is substituted into

The following expression is obtained:

where u ∈ {0,1, …,29},

indicating u corresponds under a sequence length

Values, as shown in tables 1 to 4. In addition, the first and second substrates are,

reference may also be made to 3GPP TS 38.211.

TABLE 1 Length of sequence 6

Value of

TABLE 2 Length of sequence 12

Value of

TABLE 3 sequence length 18

Value of

TABLE 4 Length of sequence 24

Value of

at this time, if will

Is substituted into

The following expression is obtained:

corresponding to

Is expressed as follows:

the sequence length is 5, and the sequence length may be configured for the terminal by the network device, for example, carried in the SRS configuration information and sent to the terminal. The selection sequence should satisfy: the sequence length is equal to or greater than the number of symbols of the reference signal (within one slot). For example, when the number of SRS symbols is 12, the length of the sequence 12,18,24,30 can be selected.

u may be a preset value or obtained by a network device by configuring or pre-storing a table, for example:

first, u is valued and

the values are correlated. For example, u takes the value of

The values are the same: when in use

When the value is 1, u is 1; when in use

When the value is 2, the value of u is 2;

when the value is 3, u is 3. The above is merely an example, and the corresponding manner is not limited thereto. The terminal can pre-store the tableA table in which u and

by corresponding information of

And obtaining the value of u. Or, network device indication

Is taken according to the sum of u and

and the terminal obtains the value of u according to the corresponding information.

Second, u is a value of

The value is related to the current port number. Such as total port number

Is the number of 2, and the number of the second,

the value of which is 12, and the like,

a value of 2, p_iI +1000, i ∈ {0,1}, SRS successive symbol number (within one slot) of 12, port 1 corresponding to

The corresponding phase rotation on each symbol for 2 corresponds to the sequence length M_ZCSequence values of 12 and u 2, port 2 corresponds to

For 8 the corresponding phase rotation on each symbol corresponds to the sequence length M_ZCThe above is merely an example, and the corresponding manner is not limited to this.

Third, u is a value of

And s is related to the value of s, and s represents the offset of the number of the low peak-to-average ratio sequence groups. For example, u is equal to

Adding the value and the s value: when s is 1, when

When the value is 1, the value of u is 2; when in use

When the value is 2, the value of u is 3;

when the value is 3, u is 4. The above is merely an example, and the corresponding manner is not limited thereto.

And fourthly, the value of u is related to the current port number and the value of s, and s represents the offset of the low peak-to-average ratio sequence group number. Such as total port number

Is 2, s is 2, port1 corresponds to u-2 and port 2 corresponds to u-3.

By reaction at alpha_i,lUp increasing random phase factor

Or

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

wherein the content of the first and second substances,

alternatively, the first and second electrodes may be,

the expression for the SRS sequence satisfies the following formula:

wherein the content of the first and second substances,

alternatively, the first and second electrodes may be,

will be provided with

Substituting the formula to obtain:

will be provided with

Substituting the formula to obtain:

wherein the content of the first and second substances,

0≤n≤M _ZC-1; where u ∈ {0,1, …,29},

represents an orderU corresponds to the column length

reference may also be made to 3GPP TS 38.211.

at this time, if will

Is substituted into

The following SRS sequence expressions are obtained:

corresponding to

Is expressed as follows:

the sequence length is 5 types and is configured by network equipment. The selection sequence should satisfy: the sequence length is equal to or greater than the number of symbols of the reference signal (within one slot). For example, when the number of SRS symbols is 12, the length of the sequence 12,18,24,30 can be selected.

δ＝log ₂(K _TC)；

u may be a preset value or a table pre-stored by a network device configuration or a terminal, for example, by the following way:

first, u is valued and

the values are correlated. For example, u takes the value of

The values are the same: when in use

When the value is 1, u is 1; when in use

When the value is 2, the value of u is 2;

when the value is 3, u is 3. The above is merely an example, and the corresponding manner is not limited thereto. The terminal may prestore a table in which u and

by corresponding information of

And obtaining the value of u. Alternatively, the first and second electrodes may be,network device indication

Is taken according to the sum of u and

Second, u is a value of

The value is related to the current port number. Such as total port number

Is the number of 2, and the number of the second,

the value of which is 12, and the like,

For 8 the corresponding phase rotation on each symbol corresponds to the sequence length M_ZCThe sequence values of 18 and u 2, above are examples only, and the corresponding partiesThe formula is not limited thereto.

Third, u is a value of

Adding the value and the s value: when s is 1, when

When the value is 1, the value of u is 2; when in use

When the value is 2, the value of u is 3;

S is 2, u-2 for port 1 and u-3 for port 2.

is the number of consecutive symbols within a slot.

K _TCIs the value of the comb, and is,

is the number of resource blocks in a subcarrier, m_SRS,bIs associated with a frequency hopping parameter, wherein the frequency hopping parameter is configured by the network device, e.g., see TS38.211 table 6.4.1.4.3-1, or table 5 herein, below, wherein B ═ B_SRS，c＝C _SRS

TABLE 5 SRS Bandwidth configuration

Cyclically shifted phase

Wherein the content of the first and second substances,

representing maximum cyclic displacementA value;

for cyclic shift, the value range is

δ＝log ₂(K _TC)；

in the fourth implementation manner, the random phase factor is multiplied on the SRS sequence

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

the SRS sequence satisfies the following formula:

Is the number of continuous symbols in a time slot;

K _TCis the value of the comb, and is,

is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter; wherein the frequency hopping parameters are configured by the network device, e.g., see TS38.211 table 6.4.1.4.3-1, or table 5 herein, where B ═ B_SRS，c＝C _SRS。

Cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

to move in a cycleA bit having a value range of

δ＝log ₂(K _TC)；

n _rannfor determining random phase rotations on different symbols, i.e. the set of random phase rotation values mentioned above.

n _randThe value can be configured by the network device, for example, any rational number;

alternatively, instead of being configurable by the network device, it may be formulated by the terminal, e.g. n_randThe following formula is satisfied:

wherein the content of the first and second substances,

or, n_randThe following formula is satisfied:

same, c (i) is the initial value of the pseudo random sequence

The value of K may be an integer greater than or equal to 0.

In a fifth implementation, the SRS sequence is multiplied by a random phase factor

When the sequence is mapped to the symbol, the cyclic shift on each symbol is different, the cyclic shift of the SRS of different symbols on the same port is different, the interference between terminals is reduced, and the time delay estimation precision is improved.

The various embodiments described herein may be implemented as stand-alone solutions or combined in accordance with inherent logic and are intended to fall within the scope of the present application.

It is understood that, in the above embodiments of the method, the execution subject of processing the reference signal may be either the terminal device or a component (e.g., a chip or a circuit) available to the terminal device.

The method embodiments provided by the embodiments of the present application are described above, and the device embodiments provided by the embodiments of the present application are described below. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments, and therefore, for brevity, details are not repeated here, since the details that are not described in detail may be referred to the above method embodiments.

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

A generating unit 510 for generating a reference signal sequence, wherein the sequence mapping has different cyclic shift values at different symbols;

a generating unit 510 for mapping the sequence onto one or more symbols;

a transmitting unit 520, configured to transmit the one or more symbols.

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

A receiving unit 610, configured to receive the one or more symbols;

a processing unit 620, configured to obtain the reference signal, where a sequence mapping of the reference signal has different cyclic shift values when the sequence mapping is at different symbols;

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

Wherein 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 slot index corresponding to a slot mapped by the sequence; alternatively, low peak-to-average ratio sequences.

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, set of random phase rotation values n_randRandom phase rotation granularity N _CSSum binary digit number K, length of low peak-to-average sequence M_ZCLow peak-to-average ratio sequence group number shift.

Correspondingly, 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, set of random phase rotation values n_randRandom phase rotation granularity N_CSSum binary digit number K, length of low peak-to-average sequence M_ZCLow peak-to-average ratio sequence group number shift.

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

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 location 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:

cyclically shifted phase alpha of a sequence_i,lThe following formula is satisfied:

the value is 8; when the comb value is 4, the number of the comb is 4,

a value of 12; when the value of comb is 8, the number of the comb is 8,

the value is not yet determined. For example, when the comb value is 8,

the value is 6 or 12, but other values are also possible.

For cyclic shift, the value range is

the granularity of the random phase rotation is indicated,

N _CSthe value may be an integer of 2 or more, and may be in combination with

The same is true.

n _randFor determining random phase rotations on different symbols.

wherein the content of the first and second substances,

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

The value of K may be an integer greater than or equal to 0.

In a first implementation, a random phase factor is added after the formula of cyclic shift

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

cyclically shifted phase alpha of a sequence_iThe following formula is satisfied:

wherein i represents the ith port, and l represents the number of symbols;

the value is 8; when the comb value is 4, the number of the comb is 4,

a value of 12; when the value of comb is 8, the number of the comb is 8,

the value is not yet determined. For example, when the comb value is 8,

the value is 6 or 12, and other values are also possible.

For cyclic shift, the value range is

the granularity of the random phase rotation is indicated,

N _CSthe value may be an integer of 2 or more, and may be in combination with

The same is true.

n _randFor determining random phase rotations on different symbols.

wherein the content of the first and second substances,

The value of K may be an integer greater than or equal to 0.

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

wherein the content of the first and second substances,

or, will

Substituted into alpha_i,lThe following expression is obtained:

wherein i represents the ith port, and l represents the number of symbols;

the value is 8; when the comb value is 4, the number of the comb is 4,

a value of 12; when the value of comb is 8, the number of the comb is 8,

the value is not yet determined. For example, when the comb value is 8,

the value is 6 or 12, but other values are also possible.

For cyclic shift, the value range is

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

at this time, if will

Is substituted into

The following expression is obtained:

where u ∈ {0,1, …,29},

indicating u corresponds under a sequence length

reference may also be made to 3GPP TS 38.211.

at this time, if will

Is substituted into

The following expression is obtained:

corresponding to

Is expressed as follows:

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

first, u is valued and

the values are correlated. For example, u takes the value of

The values are the same: when in use

When the value is 1, u is 1; when in use

When the value is 2, the value of u is 2;

when the value is 3, u is 3. The corresponding manner is not limited thereto.

Second, u is a value of

The value is related to the current port number. Such as total port number

Is the number of 2, and the number of the second,

the value of which is 12, and the like,

Third, u is a value of

Adding the value and the s value: when s is 1, when

When the value is 1, the value of u is 2; when in use

When the value is 2, the value of u is 3;

S is 2, u-2 for port 1 and u-3 for port 2.

is the number of continuous symbols in a time slot;

in another possible implementation manner, the random phase factor is:

the SRS sequence satisfies the following formula:

wherein the content of the first and second substances,

in order to obtain a sequence with a low peak-to-average ratio,

is a low peak-to-average ratio sequence base sequence; p is a radical of_iIndicating the current port number, l' indicating the number of symbols or index of symbols or number of symbols

The number of continuous symbols in one time slot is the SRS resource;

K _TCis the value of the comb, and is,

is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter; for a description of the frequency hopping parameters, please refer to the method embodiment.

Cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

δ＝log ₂(K _TC)；

n _randfor determining random phase rotations on different symbols;

or, n_randThe following formula is satisfied:

wherein the content of the first and second substances,

or, n_randThe following formula is satisfied:

same, c (i) is the initial value of the pseudo random sequence

The value of K may be an integer greater than or equal to 0.

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

the SRS sequence satisfies the following formula:

or

In order to obtain a sequence with a low peak-to-average ratio,

Is the number of continuous symbols in a time slot;

K _TCis the value of the comb, and is,

is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter; for the description of the frequency hopping parameters, reference may be made to the description of the above method embodiments, which is not described herein again.

Cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

is a low peak-to-average ratio sequence base sequence; u may be a preset value or configured by the network device, for example, by:

first, u is valued and

the values are correlated. For example, u takes the value of

The values are the same: when in use

When the value is 1, u is 1; when in use

When the value is 2, the value of u is 2;

when the value is 3, u is 3. The corresponding manner is not limited thereto.

Second, u is a value of

The value is related to the current port number. Such as total port number

Is the number of 2, and the number of the second,

the value of which is 12, and the like,

Third, u is a value of

Adding the value and the s value: when s is 1, when

When the value is 1, the value of u is 2; when in use

When the value is 2, the value of u is 3;

S is 2, u-2 for port 1 and u-3 for port 2.

is the number of continuous symbols in a time slot;

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

δ＝log ₂(K _TC)。

according to the embodiment of the application, the random phase factors are introduced, so that cyclic shift on each symbol is different, the interference between terminals can be effectively reduced, the accuracy of positioning parameter estimation is improved, and the positioning precision is further improved.

The embodiment of the present application further provides a communication apparatus 700, where the communication apparatus 700 may be a terminal device or a chip. The communication device 700 may be used to perform the above-described method embodiments.

When the communication device 700 is a terminal device, fig. 7 shows a simplified structural diagram of the terminal device. For easy understanding and illustration, in fig. 7, the terminal device is exemplified by a mobile phone. As shown in fig. 7, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user. It should be noted that some kinds 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 outputs baseband signals to the radio frequency circuit, and the radio frequency circuit performs radio frequency processing on the baseband signals and sends the radio frequency signals to the outside in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 7, and one or more processors and one or more memories may be present in an actual end device product. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit having the transceiving function may be regarded as a transceiving unit of the terminal device, and the processor having the processing function may be regarded as a processing unit of the terminal device.

As shown in fig. 7, the terminal device includes a transceiving unit 710 and a processing unit 720. The transceiving unit 710 may also be referred to as a transceiver, a transceiving means, etc. Processing unit 720 may also be referred to as a processor, processing board, processing module, processing device, or the like. Alternatively, a device for implementing a receiving function in the transceiving unit 710 may be regarded as a receiving unit, and a device for implementing a transmitting function in the transceiving unit 710 may be regarded as a transmitting unit, that is, the transceiving unit 710 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

For example, in one implementation, the processing unit 720 is configured to perform the above-described method embodiments. The transceiving unit 710 is used for transceiving operations related to the above method embodiments. For example, the transceiving unit 710 is configured to transmit one or more symbols.

It should be understood that fig. 7 is only an example and not a limitation, and the terminal device including the transceiving unit and the processing unit may not depend on the structure shown in fig. 7.

When the communication device 700 is a chip, the chip includes a transceiving unit and a processing unit. The transceiving unit can be an input/output circuit or a communication interface; 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, where the communication device 800 may be a network device or a chip. The communication device 800 may be used to perform the above-described method embodiments.

When the communication device 800 is a network device, for example, a base station. Figure 8 shows a simplified schematic diagram of a base station architecture. The base station includes a portion 810 and a portion 820. The 810 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 820 section is mainly used for baseband processing, base station control, and the like. Portion 810 may be generally referred to as a transceiver unit, transceiver, transceiving circuitry, or transceiver, etc. Part 820 is typically a control center of the base station, and may be generally referred to as a processing unit, for controlling the base station to perform the processing operation at the network device side in the above method embodiments.

The transceiver unit in section 810, which may also be referred to as a transceiver or transceiver, includes an antenna and a radio frequency unit, where the radio frequency unit is mainly used for radio frequency processing. Alternatively, a device for implementing a receiving function in the section 810 may be regarded as a receiving unit, and a device for implementing a transmitting function may be regarded as a transmitting unit, that is, the section 810 includes a receiving unit and a transmitting unit. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like, and a transmitting unit may be referred to as a transmitter, a transmitting circuit, or the like.

Portion 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 a plurality of single boards exist, the single boards can be interconnected to enhance the processing capacity. As an alternative implementation, multiple boards may share one or more processors, 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, portion 820 is used to perform the above-described method embodiments. Part 810 is used for the related transceiving operations in the above-described method embodiments. For example, portion 810 is used to receive one or more symbols.

It should be understood that fig. 8 is only an example and not a limitation, and the network device including the transceiving unit and the processing unit may not depend on the structure shown in fig. 8.

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

Embodiments of the present application also provide a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a computer, the computer causes the computer to implement the above-mentioned method embodiments.

Embodiments of the present application also provide a computer program product containing instructions, which when executed by a computer, cause the computer to implement the above-mentioned method embodiments.

For the explanation and beneficial effects of the related content in any of the communication apparatuses provided above, reference may be made to the corresponding method embodiments provided above, and details are not repeated here.

In the embodiment of the application, the terminal device or the 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 referred to as a main memory). The operating system may be any one or more computer operating systems that implement business processing through processes (processes), 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 comprises applications such as a browser, an address list, word processing software, instant messaging software and the like. Furthermore, the embodiment of the present application does not particularly limit the specific structure of the execution main body of the method provided by the embodiment of the present application, as long as the communication can be performed according to the method provided by the embodiment of the present application by running the program recorded with the code of the method provided by the embodiment of the present application, for example, the execution main body of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module capable of calling the program and executing the program in the terminal device or the network device.

In addition, various aspects or features of the present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein is intended to encompass a computer program accessible from any computer-readable device, carrier, or media. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disk, floppy disk, or magnetic tape), optical disks (e.g., Compact Disk (CD), Digital Versatile Disk (DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), card, stick, or key drive, etc.). In addition, various storage media described herein can represent one or more devices and/or other machine-readable media for storing information. The term "machine-readable medium" can include, without being limited to, wireless channels and various other media capable of storing, containing, and/or carrying instruction(s) 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), and may also be 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, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in the embodiments of the application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), Dynamic Random Access Memory (DRAM), Synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), Double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), Enhanced Synchronous SDRAM (ESDRAM), Synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

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

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

A method of reference signal processing, comprising:

generating a sequence of reference signals, wherein a phase a of a cyclic shift of the sequence_i,lRelating to a random phase factor, wherein i represents that the reference signal is transmitted by using the ith port, and l represents the symbol number or symbol index or symbol number of the sequence mapping, wherein the random phase factor represents that the sequence mapping has different cyclic shift values in different symbols;

and mapping the sequence to one or more symbols and transmitting.
The method according to claim 1, characterized in that 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; alternatively, the first and second electrodes may be,

a symbol index corresponding to a symbol mapped by the sequence and a slot index corresponding to a slot mapped by the sequence; alternatively, low peak-to-average ratio sequences.
The method of claim 1 or 2, wherein the random phase factor is:

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and
the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,
a slot index representing the mapping of said pseudo-random sequence,/' a symbol index or symbol number within said slot, c (i) is a pseudo-random sequence, an initial value c_initIs composed of
Representing sequence index or resource index, and K is an integer greater than or equal to 0;

or, n_randThe following formula is satisfied:

wherein l represents the symbol index in the slot, and c (i) is the initial value of the pseudo-random sequence

The value of K may be an integer greater than or equal to 0.
The method of claim 1 or 2, wherein the random phase factor is

The phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and
the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,
a slot index representing the mapping of said pseudo-random sequence,/' a symbol index or symbol number within said slot, c (i) is a pseudo-random sequence, an initial value c_initIs composed of
Representing sequence index or resource index, and K is an integer greater than or equal to 0;

or, n_randThe following formula is satisfied:

wherein l represents the symbol index in the slot, and c (i) is the initial value of the pseudo-random sequence

The value of K may be an integer greater than or equal to 0.
The method of claim 3 or 4, wherein the sequence is a pseudo-random sequence.
The method of claim 1 or 2, wherein the random phase factor is:
or

The cyclic shift phase a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

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

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:
a method of reference signal processing, the method comprising:

receiving one or more symbols from a terminal;

obtaining a reference signal, wherein a phase a of a cyclic shift of a sequence of the reference signal_i,lIs related to a random phase factor, wherein i represents that the reference signal is transmitted through the ith port, and l represents the symbol number or symbol index or symbol number of the sequence mapping;

and measuring the reference signal, and measuring and determining the position information of the terminal according to the measurement result.
The method according to claim 7, characterized in that 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; alternatively, the first and second electrodes may be,

a symbol index corresponding to a symbol mapped by the sequence and a slot index of the mapped slot; alternatively, the first and second electrodes may be,

low peak-to-average ratio sequence.
The method according to claim 7 or 8, wherein the random factor is:

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

n _randfor expressing random phase rotations on different symbols, where n_randThe following formula is satisfied:

wherein the content of the first and second substances,
a slot index representing the mapping of said pseudo-random sequence,/' a symbol index or symbol number within said slot, c (i) is a pseudo-random sequence, an initial value c_initIs composed of
Representing sequence index or resource index, and K is an integer greater than or equal to 0;

or, n_randThe following formula is satisfied:

wherein l represents the symbol index in the slot, and c (i) is the initial value of the pseudo-random sequence

The value of K may be an integer greater than or equal to 0.
The method of claim 7 or 8, wherein the random phase factor is:

the phase of the cyclic shift a_i,lThe following formula is satisfied:

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Granularity representing random phase rotation;

is the total port number; p is a radical of_iRepresenting a current port number;

n _randrepresenting random phase rotations on different symbols, where n_randThe following formula is satisfied:

where l represents the symbol index within the slot, c: (i) Is the initial value of the pseudo-random sequence

The value of K can be an integer which is greater than or equal to 0;

or, n_randThe following formula is satisfied:

wherein l represents the symbol index in the slot, and c (i) is the initial value of the pseudo-random sequence

The value of K may be an integer greater than or equal to 0.
The method of claim 9 or 10, wherein the sequence is a pseudo-random sequence.
The method of claim 7 or 8, wherein the random phase factor is
Alternatively, the first and second electrodes may be,

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein i represents the ith port, and l represents the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number;

p _irepresenting a current port number;

u is a preset value, or the value of u is related to a time slot index and a symbol index; r is_u,v(l) Is a low peak-to-average ratio sequence base sequence; when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:
an apparatus for reference signal processing, comprising:

a generating unit for generating a sequence of reference signals, wherein a phase a of a cyclic shift of the sequence_i,lRelating to a random phase factor, wherein i represents that the reference signal is transmitted by using the ith port, and l represents the symbol number or symbol index or symbol number of the sequence mapping;

the generating unit is further configured to map the sequence to one or more symbols;

a transmitting unit configured to transmit the one or more symbols.
The apparatus according to claim 13, wherein 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; alternatively, the first and second electrodes may be,

a symbol index corresponding to a symbol mapped by the sequence and a slot index of the mapped slot; alternatively, the first and second electrodes may be,

low peak-to-average ratio sequence.
The apparatus of claim 13 or 14, wherein the random phase factor is:

the above-mentionedCyclically shifted phase alpha_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and
the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,
a slot index representing the mapping of said pseudo-random sequence,/' a symbol number or symbol index or symbol number within said slot, c (i) is a pseudo-random sequence, an initial value c_initIs composed of
Representing sequence index or resource index, and K is an integer greater than or equal to 0;

or, n_randThe following formula is satisfied:

wherein l represents the symbol index in the slot, and c (i) is the initial value of the pseudo-random sequence

The value of K may be an integer greater than or equal to 0.
The apparatus of claim 13 or 14, wherein the random phase factor is:

the phase of the cyclic shift a_i,lThe following formula is satisfied:

wherein the content of the first and second substances,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

granularity representing random phase rotation;

N _CSa value is an integer of 2 or more, or, and
the same;

n _randfor determining random phase rotations on different symbols;

wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,
a slot index representing the mapping of said pseudo-random sequence,/' a symbol number or symbol index or symbol number within said slot, c (i) is a pseudo-random sequence, an initial value c_initIs composed of
Representing sequence index or resource index, and K is an integer greater than or equal to 0;

or, n_randThe following formula is satisfied:

wherein l represents the symbol index in the slot, and c (i) is the initial value of the pseudo-random sequence

The value of K may be an integer greater than or equal to 0.
The apparatus of claim 15 or 16, wherein the sequence is a pseudo-random sequence.
The apparatus of claim 13 or 14, wherein the random phase factor is:
alternatively, the first and second electrodes may be,

the cyclic shift phase a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

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

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:
an apparatus for reference signal processing, comprising:

a receiving unit for receiving one or more symbols from a terminal;

a processing unit for obtaining a reference signal, wherein a phase α of a cyclic shift of a sequence of the reference signal_i,lIs related to a random phase factor, wherein i represents that the reference signal is transmitted through the ith port, and l represents the symbol number or symbol index or symbol number of the sequence mapping;

the processing unit is further configured to measure the reference signal, and determine location information of the terminal according to the measurement result.
The apparatus according to claim 19, wherein 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; alternatively, the first and second electrodes may be,

a symbol index corresponding to a symbol mapped by the sequence and a slot index of the mapped slot; alternatively, the first and second electrodes may be,

low peak-to-average ratio sequence.
The apparatus according to claim 19 or 20, wherein the random factor is:

the phase of the cyclic shift a_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein the content of the first and second substances,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

n _randfor expressing random phase rotations on different symbols, where n_randThe following formula is satisfied:

wherein the content of the first and second substances,
a slot index representing the mapping of said pseudo-random sequence,/' a symbol index within said slot, c (i) is a pseudo-random sequence, an initial value c_initIs composed of
Representing sequence index or resource index, and K is an integer greater than or equal to 0;

or, n_randThe following formula is satisfied:

wherein, l represents the number of symbols or the index of symbol numbers in the slot, and c (i) is the initial value of the pseudo-random sequence
The value of K may be an integer greater than or equal to 0.
The apparatus of claim 19 or 20, wherein the random phase factor is:

the phase of the cyclic shift a_i,lThe following formula is satisfied:

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Granularity representing random phase rotation;

is the total port number; p is a radical of_iRepresenting a current port number;

n _randrepresenting random phase rotations on different symbols, where n_randThe following formula is satisfied:

wherein 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
Can be sequence index or resource index, K value can be integer more than or equal to 0;

or, n_randThe following formula is satisfied:

wherein 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

The value of K may be an integer greater than or equal to 0.
The apparatus of claim 21 or 22, wherein the sequence is a pseudo-random sequence.
The apparatus of claim 19 or 20, wherein the random phase factor is
Alternatively, the first and second electrodes may be,

the phase a of the cyclic shift_i,lThe following formula is satisfied:

alternatively, the first and second electrodes may be,

wherein, i represents the ith port, and l represents the number of symbols or the index of symbols or the number of symbols;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number;

p _irepresenting a current port number;

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

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:

indicating u corresponds under a sequence length
The value is obtained.
A computer-readable storage medium storing computer instructions that, when executed, cause a computer to perform the method of any of claims 1-6 or cause a computer to perform the method of any of claims 7-12.
A method of reference signal processing, comprising:

generating a sequence of reference signals;

mapping the sequence onto one or more symbols, wherein sequences on different symbols have different cyclic shifts;

and transmitting the one or more symbols with the mapped sequences to a network device.
The method of claim 26, wherein the reference signal is an SRS, and wherein a sequence thereof satisfies the following formula:

wherein the content of the first and second substances,
is a low peak-to-average ratio sequence base sequence;

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:

p _iindicating the current port number, l' indicates the number of symbols or symbol index or symbol number,

the number of continuous symbols in one time slot is the SRS resource;

K _TCis the value of the comb, and is,
is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter;

cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

δ＝log ₂(K _TC)；

n _randfor determining random phase rotations on different symbols;

indicating u corresponds under a sequence length
The value is obtained.
The method of claim 27, wherein n is_randIs a rational number received from a network device.
The method of claim 27, wherein n is_randThe following formula is satisfied:

wherein the content of the first and second substances,
a slot index representing the pseudo-random sequence mapping, l represents the number of symbols or symbol index or symbol number within the slot, N_CSThe value is an integer of 2 or more, or, N_CSValue and
in the same way, c (i) is a pseudo-random sequence, the initial value c_initIs composed of
And K is an integer greater than or equal to 0.
The method of claim 27, wherein n is_randThe following formula is satisfied:

where l represents the symbol index within the slot, N_CSThe value is an integer of 2 or more, or, N_CSValue and
same, c (i) is the initial value of the pseudo random sequence
The value of K may be an integer greater than or equal to 0.
The method of claim 26, wherein the reference signal is an SRS, and wherein a sequence thereof satisfies the following formula:

alternatively, the first and second electrodes may be,

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

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

when the sequence length is M _ZCWhen the value is 30, the sequence expression is as follows:

p _iindicating the current port number, l' indicates the number of symbols or symbol index or symbol number,

is the number of continuous symbols in a time slot;

K _TCis the value of the comb, and is,
is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter;

cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iIndicating the current port number.
The method according to any one of claims 26-30, further comprising:

receiving reference signal configuration information from a network device, the configuration information comprising one or more of:

random phase rotation type, set of random phase rotation values n_randRandom phase rotation granularity N_CSSum binary digit number K, length of low peak-to-average sequence M_ZCLow peak-to-average ratio sequence group number shift;

wherein the random phase rotation type comprises a pseudo-random sequence and a low peak-to-average ratio sequence.
An apparatus for reference signal processing, comprising:

a processing unit for generating a sequence of reference signals; mapping the sequence onto one or more symbols, wherein sequences on different symbols have different cyclic shifts;

a sending unit, configured to send the one or more symbols with mapped sequences to a network device.
The apparatus of claim 33, wherein the reference signal is SRS, and wherein a sequence thereof satisfies the following formula:

wherein the content of the first and second substances,
is a low peak-to-average ratio sequence base sequence;

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:

p _iindicating the current port number, l' indicates the number of symbols or symbol index or symbol number,

the number of continuous symbols in one time slot is the SRS resource;

K _TCis the value of the comb, and is,
is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter;

cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

δ＝log ₂(K _TC)；

n _randfor determining random phase rotations on different symbols;

indicating u corresponds under a sequence length
The value is obtained.
The apparatus of claim 34, wherein n is the number of bits in the array_randIs received from a network device.
The apparatus of claim 34, wherein n is the number of bits in the array_randThe following formula is satisfied:

wherein the content of the first and second substances,
a slot index representing the pseudo-random sequence mapping, l represents the number of symbols or symbol index or symbol number within the slot, N_CSThe value is an integer of 2 or more, or, N_CSValue and
in the same way, c (i) is a pseudo-random sequence, the initial value c_initIs composed of
And K is an integer greater than or equal to 0.
According toThe apparatus of claim 34, wherein n is_randThe following formula is satisfied:

where l represents the symbol index within the slot, N_CSThe value is an integer of 2 or more, or, N_CSValue and
same, c (i) is the initial value of the pseudo random sequence
The value of K may be an integer greater than or equal to 0.
The apparatus of claim 33, wherein the reference signal is SRS, and wherein a sequence thereof satisfies the following formula:

alternatively, the first and second electrodes may be,

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

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:

p _iindicating the current port number, l' indicates the number of symbols or symbol index or symbol number,

is the number of continuous symbols in a time slot;

K _TCis the value of the comb, and is,
is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter;

cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iIndicating the current port number.
The apparatus of any one of claims 33-38, 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, set of random phase rotation values, random phase rotation granularity N_CSSum binary digit number K, length of low peak-to-average sequence M_ZCLow peak-to-average ratio sequence group number shift;

wherein the random phase rotation type comprises a pseudo-random sequence and a low peak-to-average ratio sequence.
A method of reference signal processing, comprising:

receiving one or more symbols on which reference signals are mapped; wherein the reference signal sequences on different symbols have different cyclic shifts;

the reference signal is measured.
An apparatus for reference signal processing, comprising:

a receiving unit, configured to receive one or more symbols, to which reference signals are mapped, where reference signal sequences on different symbols have different cyclic shifts; and

a processing unit for measuring the reference signal.
Method or apparatus according to claim 40 or 41, wherein the reference signal is an SRS, and the sequence thereof satisfies the following formula:

wherein the content of the first and second substances,
in order to obtain a sequence with a low peak-to-average ratio,

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

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:

p _iindicating the current port number, l' indicates the number of symbols or symbol index or symbol number,

the number of continuous symbols in one time slot is the SRS resource;

K _TCis the value of the comb, and is,
is the number of resource blocks in a subcarrier, m_SRS,bThe value of (a) is related to the frequency hopping parameter;

cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iRepresenting a current port number;

δ＝log ₂(K _TC)；

n _randfor determining random phase rotations on different symbols;

indicating u corresponds under a sequence length
The value is obtained.
A method or apparatus according to claim 42, in which n is_randThe following formula is satisfied:

where l represents the symbol index within the slot, N_CSThe value is an integer of 2 or more, or, N_CSValue and
same, c (i) is the initial value of the pseudo random sequence
The value of K may be an integer greater than or equal to 0.
The method or apparatus of claim 42, wherein the reference signal is an SRS, and a sequence thereof satisfies the following formula:

wherein the content of the first and second substances,
alternatively, the first and second electrodes may be,

will be provided with
Substituting the formula to obtain:

will be provided with
Substituting the formula to obtain:

wherein the content of the first and second substances,
in order to obtain a sequence with a low peak-to-average ratio,

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

when the sequence length is M_ZCE {6,12,18,24}, the sequence expression is:

when the sequence length is M_ZCWhen the value is 30, the sequence expression is as follows:

p _iindicating the current port number, l' indicates the number of symbols or symbol index or symbol number,

is the number of continuous symbols in a time slot;

K _TCis the value of the comb, and is,
is the number of resource blocks in a subcarrier, m_SRS,bThe values of (a) are related to the hopping parameters b and c;

cyclically shifted phase

Wherein the content of the first and second substances,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is

Is the total port number; p is a radical of_iIndicating the current port number.
The method of claim 40, further comprising:

receiving a location information request from a positioning device, the location information request carrying one or more of the following information:

random phase rotation type, set of random phase rotation values, random phase rotation granularity N_CSSum binary digit number K, length of low peak-to-average sequence M_ZCLow peak-to-average ratio sequence group number shift;

wherein the random phase rotation type comprises a pseudo-random sequence and a low peak-to-average ratio sequence.
The method of claim 40 or 45, further comprising:

and sending a position information response to the positioning equipment.
The method of claim 40, 45 or 46, further comprising:

receiving a location measurement request from a positioning device, wherein the location measurement request carries one or more of the following information:

random phase rotation type, set of random phase rotation values, random phase rotation granularity N_CSSum binary digit number K, length of low peak-to-average sequence M_ZCLow peak-to-average ratio sequence group number shift.
The apparatus of claim 41, wherein the receiving unit is further configured to receive a location information request from a positioning device, and wherein the location information request carries one or more of the following information:

random phase rotation type, set of random phase rotation values, random phase rotation granularity N_CSSum binary digit number K, length of low peak-to-average sequence M_ZCLow peak-to-average ratio sequence group number shift;

wherein the random phase rotation type comprises a pseudo-random sequence and a low peak-to-average ratio sequence.
The apparatus according to claim 41 or 48, wherein the apparatus further comprises a sending unit for sending a location information response to the positioning device.