CN114287123B

CN114287123B - Reference signal processing method, device and system

Info

Publication number: CN114287123B
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: 2023-12-15
Anticipated expiration: 2039-09-30
Also published as: WO2021046948A1; WO2021046823A1; CN117834364A; CN114287123A

Abstract

A processing method, device and system for reference signals are provided. Wherein the method comprises generating a sequence of reference signals, wherein the phase alpha of the cyclic shift of the sequence of reference signals _i,l In relation to a random phase factor, wherein i denotes that the reference signal is transmitted through an i-th port, and l denotes the symbol number or symbol index or symbol number of the sequence map; the sequence is mapped to one or more symbols and transmitted. When the method generates the sequence of the reference signals, the phase rotation of the symbol level is increased, 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

The positioning technologies supported in the New Radio (NR), such as downlink positioning technology, uplink positioning technology, and uplink and downlink positioning technology, are well defined in 3gpp TR 38.855. The uplink positioning and uplink and downlink positioning technologies require that the base station measures a sounding reference signal (sounding reference signal, SRS) sent by the terminal.

The number of continuous symbols in a time slot supporting SRS in the existing standard is 1,2,4,8, 12, the port number 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 on the granularity of every N subcarriers, and the SRS frequency division sent by N terminals can be realized. For example, as shown in fig. 1, a comb value of 2 and the number of consecutive symbols of 2 are taken as an example. When the transmission ports are larger than 1, the ports use the same Resource Element (RE) and sequence, and at this time, a cyclic shift is needed to distinguish between the different ports.

The SRS sequence expression of the existing NR system is as follows:

wherein the number of symbolsFor the number of consecutive symbols in a time slot, is->Is a low peak-to-average ratio sequence,/->Is a low peak-to-average ratio sequence base sequence; p is p _i Represents the current port number, δ=log ₂ (K _TC )，K _TC For comb value, ++>Is the number of resource blocks in one subcarrier, m _SRS，b Is associated with the frequency hopping parameter. Phase alpha of cyclic shift _i The phase alpha of the cyclic shift is related to four items of maximum cyclic shift number, total number of antenna ports, current port number and cyclic shift _i The expression is as follows:

wherein,

representing the cyclic shift on the i-th port, is->For maximum cyclic shift value of SRS, when comb value is 2, the +. >The value is 8; when comb value is 4, ++>The value is 12.The cyclic shift is represented, and the value range isP is the total port number _i Representing the current port number.

In the prior art, the SRS with different symbols on the same port has the same cyclic shift, so that the self-correlation of the SRS sent by the terminal is too close to the cross-correlation peak value of the SRS sent by other terminals, and interference among the terminals exists, thereby influencing the time delay estimation precision.

Disclosure of Invention

In order to solve the problems that in the prior art, SRSs with different symbols on the same port have the same cyclic shift, so that inter-terminal interference is serious and delay estimation accuracy is affected, the embodiment of the application provides a reference signal processing method, a device and a system, which enable the cyclic shifts of SRSs with different symbols on the same port to be different, reduce interference between terminals and improve delay estimation accuracy.

In a first aspect, an embodiment of the present application provides a method for processing a reference signal, including: generating a sequence of reference signals, wherein the phase alpha of the cyclic shift of the sequence _i I is related to a random phase factor, wherein i represents that the reference signal is sent by adopting an i-th port, i represents the symbol number or symbol index or symbol number of the sequence mapping, or the sequence is related to the random phase factor, and the random phase factor represents that the sequence mapping has different cyclic shift values when different symbols are displayed; the sequence is mapped to one or more symbols and transmitted. According to the technical scheme provided by the embodiment of the application, the random phase factors are introduced to enable the cyclic shift of the sequence mapping on each symbol to be different, so that the self-correlation of the transmitted reference signals of the terminals is staggered with the peak value of the cross-correlation of the reference signals transmitted 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: symbol indexes corresponding to symbols mapped by the sequences; or, the symbol index corresponding to the symbol mapped by the sequence and the time slot index corresponding to the mapped time slot; or a low peak-to-average ratio sequence.

In another possible implementation, the random phase factor is:

the phase alpha of the cyclic shift _i，l The following formula is satisfied:

or,

wherein,

wherein i represents an i-th port, and l represents a symbol number or a symbol index or a symbol number;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

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

n _rand for determining random phase rotations on different symbols;

wherein n is _rand The following formula is satisfied:

wherein,a time slot index representing the mapping of the pseudo-random sequence, i representing the number of symbols or the symbol index or the symbol number within the time slot, c (i) being the pseudo-random sequence, an initial value c _init Is->Representing a sequence index or a resource index, wherein the value of K is an integer greater than or equal to 0;

Alternatively, n _rand The following formula is satisfied:

where l represents the symbol index in slot and c (i) is the initial value of the pseudorandom sequence The value of K can be an integer greater than or equal to 0.

In another possible implementation, the random phase factor is:

the phase alpha of the cyclic shift _i，l The following formula is satisfied:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

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

n _rand for determining random phase rotations on different symbols;

wherein n is _rand The following formula is satisfied:

alternatively, n _rand The following formula is satisfied:

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

In another possible implementation, the random phase factor is:

the phase alpha of the cyclic shift _i，l The following formula is satisfied:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

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

n _rand for determining random phase rotations on different symbols;

wherein n is _rand The following formula is satisfied:

wherein,representing the pseudo-randomSlot index mapped by machine sequence, i represents symbol index in the slot, c (i) is pseudo random sequence, initial value c _init Is->Representing a sequence index or a resource index, wherein the value of K is an integer greater than or equal to 0;

alternatively, n _rand The following formula is satisfied:

In another possible implementation, the random phase factor is

The phase alpha of the cyclic shift _i，l The following formula is satisfied:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

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

n _rand for determining random phase rotations on different symbols;

wherein n is _rand The following formula is satisfied:

alternatively, n _rand The following formula is satisfied:

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

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

The cyclic shift phase alpha _i，l The following formula is satisfied:

or,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing 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 _ZC E {6, 12, 18, 24}, the sequence expression is:

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

according to the technical scheme provided by the embodiment of the application, the random phase factors are introduced to enable the cyclic shift of the sequence mapping on each symbol to be different, so that the self-correlation of the transmitted reference signals of the terminals is staggered with the peak value of the cross-correlation of the reference signals transmitted 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 signalA method of number processing, the method comprising: receiving one or more symbols from a terminal; obtaining a reference signal, wherein the phase alpha of the cyclic shift of the sequence of the reference signal _i I is related to a random phase factor, wherein i indicates that the reference signal is transmitted through an i-th port, i indicates the number of symbols or symbol index or symbol number mapped by the sequence, or the sequence is related to a random phase factor, wherein the random phase factor indicates that the sequence is mapped to have different cyclic shift values when different symbols are included; the reference signal is measured.

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

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

the phase alpha of the cyclic shift _i，l The following formula is satisfied:

or,

wherein,

representation ofA maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

n _rand for representing random phase rotations on different symbols, where n _rand The following formula is satisfied:

wherein,a slot index representing the mapping of the pseudo-random sequence, l representing the symbol index within the slot, c (i) being the pseudo-random sequence, an initial value c _init Is->Representing a sequence index or a resource index, wherein the value of K is an integer greater than or equal to 0;

alternatively, n _rand The following formula is satisfied:

In another possible implementation, the random phase factor is:

the phase alpha of the cyclic shift _i，l The following formula is satisfied:

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 p _i Representing a current port number;

n _rand representing random phase rotations on different symbols, where n _rand The following formula is satisfied:

where l represents the symbol index in slot and c (i) is the initial value of the pseudorandom sequence The value of K can be an integer more than or equal to 0;

alternatively, n _rand The following formula is satisfied:

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

In another possible implementation, the random phase factor isOr (F)>

The phase alpha of the cyclic shift _i，l The following formula is satisfied:

or,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number;

p _i representing a current port number;

when the sequence length is M _ZC When=30, 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 the phase alpha of the cyclic shift of the sequence _i，l In relation to a random phase factor, wherein i represents transmitting the reference signal with an i-th port, l represents a symbol number or a symbol index or a symbol number of the sequence map, or the sequence is in relation to a random phase factor, wherein the random phase factor represents that the sequence map has different cyclic shift values when different symbols; a processing unit for mapping the sequence to one or more symbols; and a transmitting unit, configured to transmit the one or more symbols.

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

In another possible implementation, the random phase factor is:

the phase alpha of the cyclic shift _i，l The following formula is satisfied:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

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

n _rand for determining random phase rotations on different symbols;

wherein n is _rand The following formula is satisfied:

wherein,a slot index representing the mapping of the pseudo-random sequence, l representing the symbol index within the slot, c (i) being the pseudo-random sequence, an initial value c _init Is->Representing a sequence index or a resource index, wherein the value of K is an integer greater than or equal to 0; alternatively, n _rand The following formula is satisfied:

In another possible implementation, the random phase factor is:

the phase alpha of the cyclic shift _i，l The following formula is satisfied:

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

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

n _rand for determining random phase rotations on different symbols;

wherein n is _rand The following formula is satisfied:

wherein,a time slot index representing the mapping of the pseudo-random sequence, i representing the number of symbols or the symbol index or the symbol number within the time slot, c (i) being the pseudo-random sequence, an initial value c _init Is->Representing a sequence index or a resource index, wherein the value of K is an integer greater than or equal to 0; alternatively, n _rand The following formula is satisfied:

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

In another possible implementation, the random phase factor is:or (F)>

The cyclic shift phase alpha _i，l The following formula is satisfied:

or,

representing a maximum cyclic displacement value;

in order for the cyclic shift to be performed,the value range is +.>

Is the total port number; p is p _i Representing 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 _ZC E {6, 12, 18, 24}, the sequence expression is:

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

in a fourth aspect, an apparatus for reference signal processing includes: a receiving unit for receiving one or more symbols from a terminal, a processing unit for obtaining a reference signal, wherein the phase alpha of the cyclic shift of the sequence of the reference signal _i，l In relation to a random phase factor, wherein i denotes that the reference signal is transmitted through an i-th port, i denotes the number of symbols or symbol index or symbol number of the sequence map, or the sequence is in relation to a random phase factor, wherein the random phase factor denotes that the sequence map has different cyclic shift values when different symbols; and the processing unit is also used for measuring 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 alpha of the cyclic shift _i，l The following formula is satisfied:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

n _rand for representing different symbolsRandom phase rotation on, where n _rand The following formula is satisfied:

In another possible implementation, the random phase factor is:

the phase alpha of the cyclic shift _i，l The following formula is satisfied:

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 p _i Representing a current port number;

wherein l represents the number of symbols or symbol index or symbol number in slot, c (i) is the initial value of pseudo-random sequenceThe value of K can be an integer more than or equal to 0;

alternatively, n _rand The following formula is satisfied:

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

In another possible implementation, the random phase factor is Or (F)>

The phase alpha of the cyclic shift _i，l The following formula is satisfied:

or,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number;

p _i representing a current port number;

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

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

the SRS sequence satisfies the following formula:

wherein p is _i Indicating the current port number, l' indicating the number of symbols or the symbol index or the symbol number The number of continuous symbols of SRS resources in one time slot;

K _TC for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRS，b Is related to the frequency hopping parameter;

phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

δ＝log ₂ (K _TC )；

n _rand For determining random phase rotations on different symbols;

n _rand the value can be any rational number;

alternatively, n _rand The following formula is satisfied:

wherein,a time slot index representing the mapping of the pseudo-random sequence, l representing the number of symbols or the symbol index or the symbol number within the time slot, N _CS The value is an integer greater than or equal to 2, or N _CS Take value and +.>Similarly, c (i) is a pseudo-random sequence, initial value c _init Is->Representing a sequence index or a resource index, wherein the value of K is an integer greater than or equal to 0;

alternatively, n _rand The following formula is satisfied:

where l represents the symbol index in slot, N _CS The value is an integer greater than or equal to 2, or N _CS Value takingSimilarly, c (i) is the pseudo random sequence initial value +.>The value of K can be an integer greater than or equal to 0.

the SRS sequence satisfies the following formula:

or->

Wherein p is _i Indicating the current port number, l' indicating the number of symbols or the symbol index or the symbol number Is the number of consecutive symbols in a slot;

phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

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

δ＝log ₂ (K _TC )。

in a fifth aspect, embodiments of the present application also provide a computer-readable storage medium storing 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, embodiments of the present application further provide an apparatus comprising a processor and a memory storing 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 an apparatus according to any one of the possible implementation manners of the third aspect or the third aspect, and the network device includes an 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 mapped with the sequences to network equipment.

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; and the sending unit is used for sending the one or more symbols mapped with the sequences to network equipment.

In a tenth aspect, an embodiment of the present application further provides a method for processing a reference signal, including: receiving one or more symbols, the symbols having reference signals mapped thereon; 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, where reference signals are mapped on the symbols, and 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 of the SRS satisfies the following formula:

wherein,is a low peak-to-average ratio sequence,

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

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

p _i representing the current port number, l' representing the number of symbols or the symbol index or the symbol number, the number of continuous symbols of SRS resources in one time slot;

phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

δ＝log ₂ (K _TC )；

n _rand for determining random phase rotations on different symbols;

Represents a sequence length corresponding to u +.>Values.

With reference to any one of the eighth to eleventh aspects, in another possible implementation manner, the n _rand The following formula is satisfied:

wherein,a time slot index representing the mapping of the pseudo-random sequence, l representing the number of symbols or the symbol index or the symbol number within the time slot, N _CS The value is an integer greater than or equal to 2, or N _CS Take value and +.>Similarly, c (i) is a pseudo-random sequence, initial value c _init Is->And (3) representing a sequence index or a resource index, wherein the value of K is 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 of the SRS satisfies the following formula:

wherein,or (F)>

Will beSubstituting the formula to obtain the following formula:

will beSubstituting the formula to obtain the following formula:

Wherein,is a low peak-to-average ratio sequence,

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

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

p _i representing the current port number, l' representing the number of symbols or the symbol index or the symbol number, is the number of consecutive symbols in a slot;

K _TC for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRS，b The value of (c) is related to the frequency hopping parameters b and c.

Phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing the current port number.

With reference to any one of the eighth to eleventh aspects, in another possible implementation manner, the sequence length M _ZC Is received from a network device.

Drawings

Fig. 1 is a schematic 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 according to an embodiment of the present application;

FIG. 3 is a schematic diagram of another network architecture according to an 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 application;

FIG. 5 is a schematic view of an apparatus according to an embodiment of the present application;

FIG. 6 is a schematic diagram of another apparatus provided by an embodiment of the present application;

fig. 7 is a schematic diagram of a terminal device according to 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, in which it is evident that the embodiments described are only some, but not all embodiments of the present application. As one of ordinary skill in the art can appreciate, with the development of technology and the appearance of new scenes, the technical solution provided by the embodiment of the present application is also applicable to similar technical problems.

The term "and/or" appearing in the present application may be an association relationship describing an associated object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In the present application, the character "/" generally indicates that the front and rear related objects are an or relationship.

The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments described herein may be implemented in other sequences than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations 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 that are expressly listed or inherent to such process, method, article, or apparatus. The naming or numbering of the steps in the present application does not mean that the steps in the method flow must be executed according to the time/logic sequence indicated by the naming or numbering, and the execution sequence of the steps in the flow that are named or numbered may be changed according to the technical purpose to be achieved, so long as the same or similar technical effects can be achieved. The division of the modules in the present application is a logical division, and may be implemented in another manner in practical applications, for example, a plurality of modules may be combined or integrated in another system, or some features may be omitted or not implemented, and further, coupling or direct coupling or communication connection between the modules shown or discussed may be through some interfaces, and indirect coupling or communication connection between the modules may be electrical or other similar manners, which are not limited in the present application. The modules or sub-modules described as separate components may be physically separated or not, 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 application.

The technical scheme of the embodiment of the application can be applied to various communication systems, such as: a long term evolution (long term evolution, LTE) system, an LTE frequency division duplex (frequency division duplex, FDD) system, an LTE time division duplex (time division duplex, TDD), a universal mobile telecommunications system (universal mobile telecommunication system, UMTS), a worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX) telecommunications system, a fifth generation (5th generation,5G) system or a New Radio (NR), or a next generation telecommunications system, etc.

To facilitate understanding of the embodiments of the present application, a network architecture suitable for use in 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. 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 device involved 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 functions.

In fig. 2 and 3, a terminal device is taken as an example of a UE.

2. Network equipment: the present embodiment is not limited, and the network device may be an evolved NodeB (eNB or eNodeB) in the LTE system, a base station (base transceiver station, BTS) in the global system for mobile communications (global system for mobile communications, GSM) or code division multiple access (code division multiple access, CDMA), a base station (NodeB, NB) in the wideband code division multiple access (wideband code division multiple access, WCDMA) system, a wireless controller in the cloud wireless access network (cloud radio access network, CRAN) scenario, or the network device may be a relay station, an access point, a vehicle device, a wearable device, and a network device in a 5G network or a network device in a future evolved PLMN network, etc.

3. Mobility management entity (mobility management entity, MME): can be used for managing the position information, the security and the service continuity of the terminal equipment.

4. Position measurement unit (location measurement unit, LMU) network element: may be integrated in a network device, such as a base station, or may be separate from the base station. And is responsible for receiving the uplink signal sent by the terminal equipment. In the present embodiment, it is assumed that the LMU has the capability to transmit a downlink signal.

5. Evolved serving mobile location center (evolved serving mobile location cente, E-SMLC) network element: may be used for positioning, for example referred to as a positioning service center or positioning management device, in embodiments of the present application both MME and LMU are referred to as positioning management devices. The method is used for collecting measurement information and 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 to determine the position of the terminal equipment.

In this architecture, a terminal device may connect to a radio access network via an eNodeB over an LTE-Uu interface. E-SMLC and LMU are connected through SLm interface, E-SMLC and MME are connected through 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. positioning management function (location management function, LMF) network element: may be used for positioning, for example, referred to as a positioning service center or positioning management device, and in embodiments of the present application, are referred to as positioning management devices. The method is used for collecting measurement information and 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 to determine the position of the terminal equipment. The LMF may be a device or component deployed in a core network to provide positioning functionality for terminal devices.

2. Access and mobility management function (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 realizing other functions besides session management in the functions of a mobility management entity (mobility management entity, MME), such as legal interception, access authorization (or authentication) and the like. In the embodiment of the application, the method and the device can be used for realizing the functions of the access and mobile management network elements.

The rest of the network elements may refer to the above description of the architecture 200, and will not be repeated here.

In this architecture 300, the UE connects to the radio access network (NG-RAN) via next-generation base stations (next-generation eNodeB, NG-eNB) and gnbs, respectively, over LTE-Uu and/or NR-Uu interfaces; the radio access network is connected to the core network via the AMF through the NG-C interface. Wherein the next generation radio access network (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 a NLs interface.

The ng-enbs in fig. 2 and 3 described above may also be replaced by transmission nodes (transmission point, TP) or transmission reception points (transmission and reception point, TRP).

In the embodiment of the present application, the positioning management apparatus is mentioned a plurality of times. The positioning management device represents a network element that can manage a serving cell and a neighboring 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 application is not limited to the names of the location management devices, which may be given other names in future evolution technologies.

It should be understood that the network architecture applied to the embodiments of the present application is merely illustrative, and the network architecture to which the embodiments of the present application are applied is not limited to this, and any network architecture capable of implementing the functions of the respective network elements described above is applicable to the embodiments of the present application. For example, the embodiment of the application can be applied to other positioning systems.

It should also be understood that the "network element" may also be referred to as an entity, a device, an apparatus, a module, or the like, and the present application is not particularly limited. In the present application, for the sake of easy understanding and explanation, the description of "network element" is omitted in some descriptions, for example, an LMF network element is abbreviated as LMF, in which case, the "LMF" is understood as an LMF network element or an LMF entity, and in the following, the description of the same or similar cases is omitted.

It should also be understood that the names of interfaces between the network elements are merely examples, and the names of interfaces in the specific implementation may be other names, which are not specifically limited by the present application. Furthermore, the names of the transmitted messages (or signaling) between the various network elements described above are also merely an example, and do not constitute any limitation on the function of the message itself.

It should also be understood that the above designations are merely for convenience in distinguishing between different functions and should not be construed as limiting the application in any way, and the application does not exclude the possibility of employing other designations in 5G networks and other networks in the future. For example, in a 6G network, some or all of the individual network elements may follow the terminology in 5G, possibly by other names, etc. The description is unified herein, and will not be repeated.

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

step 410: the terminal device generates a sequence of reference signals, the cyclic shift of which has a phase alpha _i，l In relation to a random phase factor, wherein i represents transmitting the reference signal by using an i-th port, and l represents a symbol number or a symbol index or a symbol number of the sequence map, wherein the random phase factor represents that the sequence map has different cyclic shift values when different symbols are mapped;

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

step 430: the one or more symbols are transmitted.

Step 440: the network device 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，l In relation to a random phase factor, wherein i denotes that the reference signal is transmitted through an i-th port, and l denotes the symbol number or symbol index or symbol number of the sequence map;

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 a method for configuring information, 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: a random phase rotation type comprising:

a) A pseudo-random sequence is used, or a low peak-to-average ratio sequence is used. The item is selectable.

b) The length of the random phase rotation value group (or called random phase rotation value set) 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 (number of symbols) or the symbol index (in one time slot) in sequence. The item is selectable. When a plurality of ports are configured, the random phase rotation value groups can be multiple groups, and the group numbers and the port numbers correspond to each other in sequence; when the number is one, each value on the random phase rotation value group corresponds to the number of the symbols in sequence, and different ports on the same symbol correspond to the same random phase rotation value. For example, the reference signal maps to consecutive symbols of 4 in one slot, the port number of 2, and the random phase rotation value groups are two groups, and each value in each group may be a rational number. Alternatively, the set of random phase rotation values may be derived from a terminal stored formula, such as the following, without requiring network device configuration:

alternatively, it is obtained from the following formula:

c) Random phase rotation granularity N _CS And a binary digit K. The item is selectable. When the terminal obtains the phase offset according to the following formula, the random phase rotation granularity N _CS And the binary number K may be configured by the network device to danni. For example, the terminal generates a random phase rotation value by the following formula:

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

d) The low peak-to-average ratio sequence length is used to indicate the selected low peak-to-average ratio sequence length. The item is selectable. When the reference signal employs a low peak-to-average ratio sequence, the length of the low peak-to-average ratio sequence may be configurable by the network device. For example, mention is made in the examples belowSequence length M of (2) _ZC . The length of the low peak-to-average ratio sequence should be longer than the number of consecutive symbols in one slot, e.g., 4 in one slot and 6 in one slot, and the values in the sequence correspond to the symbol index or number of symbols (in one slot) in order from the start point.

e) The low peak-to-average ratio sequence group number offset is used to indicate the offset value of the selected low peak-to-average ratio sequence group number from group number 0. For example, when the number of antenna ports is 2, the number of consecutive symbols in one slot is 4, the length of the low peak-to-average ratio sequence is 6, the number of groups of the low peak-to-average ratio sequence is offset by 1, the number of selected groups starts from the number of groups 1, and according to TS38.211 table 5.2.2-1, or the values corresponding to the number of groups 1 are respectively [ -3, -1,3, -3] and the values corresponding to the number of groups 2 are respectively [ -3, -3, 1, -3], then 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 in one slot of the port 2. This is an option, defaulting to 0 when not configured.

S403: the serving base station transmitting a location information response (LOCATION INFORMATION RESPONSE) to the positioning device; optionally, the location information responds to SRS configuration information of the 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) Random phase rotation value set (or set of random phase rotation values)

c) Random phase rotation granularity N _CS And binary digit K

d) Low peak-to-average ratio sequence length indicating selected low peak-to-average ratio sequence length

e) The offset of the low peak average ratio sequence group number is used for indicating the offset value of the selected low peak 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 neighbor base station, optionally, the location measurement request sent to the neighbor base station includes one or more items of SRS configuration information:

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

b) Random phase rotation value set (or set of random phase rotation values)

c) Random phase rotation granularity N _CS And binary digit K

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

S406: the service base station and the neighbor base station measure 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:

symbol indexes corresponding to symbols mapped by the sequences; or, the symbol index corresponding to the symbol mapped by the sequence and the time slot index of the mapped time slot; alternatively, by a low peak-to-average ratio sequence.

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

phase alpha of cyclic shift _i，l The following formula is satisfied:

the maximum cyclic shift value is indicated and correlated with the comb value. In the current standard, when comb takes a value of 2,the value is 8; when comb takes a value of 4, < + >>The value is 12; when comb takes a value of 8,/o>The value is not yet determined. For example, when comb takes a value of 8, < +. >The value can be 6 or 12, or other values.

For cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

representing the granularity of the random phase rotation,

N _CS the value can be an integer greater than or equal to 2, or can be combined with the formulaThe same applies.

n _rand For determining different symbolsRandom phase rotation on the number.

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

wherein,represents the time slot index in a frame, l represents the number of symbols or the symbol index or the symbol number in the time slot, c (i) is a pseudo-random sequence, and the initial value +.>The value of K can 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 _rand The value mode of (a) is only related to the symbol index, and the expression is:

In a first implementation, inThe random phase factor is added after the cyclic shift formulaWhen the sequences are mapped to the symbols, the cyclic shifts of SRS of different symbols on the same port are different, so that the interference between terminals is reduced, and the time delay estimation precision is improved.

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

Phase alpha of cyclic shift _i，l The following formula is satisfied:

wherein i represents an i-th port, and l represents a symbol number;

the maximum cyclic shift value is indicated and correlated with the comb value. In the current standard, when comb takes a value of 2,the value is 8; when comb takes a value of 4, < + >>The value is 12; when comb takes a value of 8,/o>The value is not yet determined.

For cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

representing the granularity of the random phase rotation,

n _rand For determining random phase rotations on different symbols.

wherein, I is listed in tableShowing the number of symbols or symbol index or symbol number in slot, c (i) is the initial value of the pseudo-random sequence The value of K can be an integer greater than or equal to 0.

In the second implementation, the method is implemented by the method in alpha _i，l Up-adding a random phase factorThe 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 accuracy 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 to each symbol, with a random phase factor of:or->

Phase alpha of cyclic shift _i，l The expression is:

wherein,

alternatively, it willSubstituted into alpha _i，l The following expression is obtained:

For cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

is a low peak-average ratio sequence base sequence (sequence length is less than 36), when the sequence length M _ZC E {6, 12, 18, 24}, the sequence expression is:

at this time, ifSubstituted into->The following expression is obtained:

where u e {0,1,., 29},represents a sequence length corresponding to u +.>Values as shown in tables 1 to 4. In addition, a->The value of (c) may also refer to 3gpp ts38.211./>

TABLE 1 sequence length 6Value->

TABLE 2 sequence length at 12Value->

TABLE 3 sequence length 18Value->

TABLE 4 sequence length 24Value of

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

at this time, ifSubstituted into->The following expression is obtained:

corresponding toIs expressed as follows:

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

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

first, u is a value andthe values are correlated. For example, u takes the value and +.>The values are the same: when->When the value is 1, u is 1; when- >When the value is 2, u is 2;When the value is 3, u is 3. The above is merely an example, and the corresponding manner is not limited thereto. The terminal may pre-store a table with records of u and +.>Corresponding information of (1) by->And obtaining the value of u. Alternatively, the network device indicates +.>Is based on u and +.>The terminal obtains the value of u.

Second, u is a value andthe value is related to the current port number. For example, total port number->2->The value is 12 @, @>Take the value of 2, p _i =i+1000, i e {0,1}, SRS consecutive symbol number (in one slot) of 12, port 1 corresponds toThe corresponding phase rotation on each symbol at 2 corresponds to the sequence length M _ZC Sequence values of =12 and u=2, port 2 corresponds +.>The corresponding phase rotation on each symbol at 8 corresponds to the sequence length M _ZC The sequence values of=18 and u=2, the above is merely an example, and the corresponding manner is not limited thereto.

Third, u is taken from the value andand s represents the shift of the number of the low peak-to-average ratio sequence groups. For example, u is equal to +.>The value is added with the value of s: s is 1, when->When the value is 1, u is 2; when->When the value is 2, u is 3;when the value is 3, the value of u is 4. The above is merely an example, and the corresponding manner is not limited thereto.

Fourth, the u value is related to the current port number and s value, s represents the low peak-to-average ratio sequence group number offset. Such as total port numberFor 2, s is 2, u=2 for port 1, and u=3 for port 2.

By at alpha _i，l Up-adding a random phase factorOr->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 accuracy is further improved.

Optionally, in a fourth implementation, a random phase rotation is added to each symbol, the random phase factor being:wherein (1)>Or (F)>

The expression of the SRS sequence satisfies the following formula:

wherein,or (F)>

Will beSubstituting the formula to obtain the following formula:

will beSubstituting the formula to obtain the following formula:

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

wherein u e {0,1,..29 }, }>Represents a sequence length corresponding to u +.>Values as shown in tables 1 to 4. In addition, a->The value of (c) may also refer to 3gpp ts38.211.

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

at this time, ifSubstituted into->The following SRS sequence expression was obtained:

Corresponding toIs expressed as follows:

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

δ＝log ₂ (K _TC )；

u may be a preset value or configured by the network device or the terminal pre-stores the table, for example, by:

first, u is a value andthe values are correlated. For example, u takes the value and +.>The values are the same: when->When the value is 1, u is 1; when->When the value is 2, u is 2;When the value is 3, u is 3. The above is merely an example, and the corresponding manner is not limited thereto. The terminal may pre-store a table with records of u and +.>Corresponding information of (1) by->And obtaining the value of u. Alternatively, the network device indicates +.>Is based on u and +.>The terminal obtains the value of u.

Fourth, u is related to the current port number and s, s represents the low peak-to-average ratio sequence groupThe number is offset. Such as total port numberFor 2, s is 2, u=2 for port 1, and u=3 for port 2.

p _i Representing the current port number, l' representing the number of symbols or the symbol index or the symbol number, is the number of consecutive symbols in a slot.

K _TC For comb value, ++>Is the number of resource blocks in one subcarrier, m _SRS，b Is associated with a frequency hopping parameter, wherein the frequency hopping parameter is configured by the network device, e.g., with reference to TS38.211 table 6.4.1.4.3-1, or table 5 herein, as follows, wherein B = B _SRS ，c＝C _SRS />

Table 5 SRS bandwidth configuration

Phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

δ＝log ₂ (K _TC )；

in the fourth implementation, the method is implemented by multiplying the SRS sequence with a random phase factorThe 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 accuracy is further improved.

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

the SRS sequence satisfies the following formula:

K _TC for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRS，b Is related to the frequency hopping parameter; wherein the frequency hopping parameters are configured by the network device, e.g., with reference to TS38.211 table 6.4.1.4.3-1, or table 5 herein, wherein b=b _SRS ，c＝C _SRS 。

Phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

δ＝log ₂ (K _TC )；

n _rand for determining a random phase rotation over different symbols, i.e. the set of random phase rotation values mentioned above.

n _rand The value may be configured by the network device, for example, as any rational number;

alternatively, it may be formulated by the terminal in addition to the network device, for example, n _rand The following formula is satisfied:

alternatively, n _rand The following formula is satisfied:

In a fifth implementation, the method is implemented by multiplying the SRS sequence with a random phase factorWhen the sequence is mapped to the symbols, cyclic shifts on each symbol are different, cyclic shifts of SRS of different symbols on the same port are different, interference between terminals is reduced, and delay estimation accuracy is improved.

The various embodiments described herein may be separate solutions or may be combined according to inherent logic, which fall within the scope of the present application.

It will be appreciated that in the above-described method embodiments, the execution body of processing the reference signal may be either the terminal device or a component (e.g. a chip or a circuit) that may be used for the terminal device.

The method embodiment provided by the embodiment of the present application is described above, and the device embodiment provided by the embodiment of the present application will be described below. It should be understood that the descriptions of the apparatus embodiments and the descriptions of the method embodiments correspond to each other, and thus, descriptions of details not described may be referred to the above method embodiments, which are not repeated herein for brevity.

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

A generating unit 510, configured to generate a reference signal sequence, where the sequence maps to have different cyclic shift values when different symbols are generated;

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 application also provides a schematic diagram of a reference signal processing device 600, where the device 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 the sequence map of the reference signal has different cyclic shift values when different symbols are used;

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

Optionally, the apparatus 500 further comprises a receiving unit 530 for receiving reference signal configuration information from the network device, the reference signal configuration information comprising one or more of the following information:

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

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

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

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

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

phase alpha of cyclic shift of sequence _i，l The following formula is satisfied:

the maximum cyclic shift value is indicated and correlated with the comb value. In the current standard, when comb takes a value of 2,the value is 8; when comb takes a value of 4, < + > >The value is 12; when comb takes a value of 8,/o>The value is not yet determined. For example, when comb takes a value of 8, < +.>The value is 6 or 12, and other values are also possible.

For cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

representing the granularity of the random phase rotation,

n _rand For determining random phase rotations on different symbols.

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

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

In a first implementation, a random phase factor is added after the cyclic shift formula When the sequences are mapped to the symbols, the cyclic shifts of SRS of different symbols on the same port are different, so that the interference between terminals is reduced, and the time delay estimation precision is improved.

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

phase alpha of cyclic shift of sequence _i The following formula is satisfied:

wherein i represents an i-th port, and l represents a symbol number;

the maximum cyclic shift value is indicated and correlated with the comb value. In the current standard, when comb takes a value of 2,the value is 8; when comb takes a value of 4, < + >>The value is 12; when comb takes a value of 8,/o>The value is not yet determined. For example, when comb takes a value of 8, < +.>The value is 6 or 12, and other values are also possible.

For cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

representing the granularity of the random phase rotation,

n _rand For determining random phase rotations on different symbols.

wherein,represents the time slot index in a frame, l represents the number of symbols or the symbol index or the symbol number in the time slot, c (i) is a pseudo-random sequence, and the initial value +. >The value of K can 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 expression of the cyclic shift is:

wherein,

wherein i represents an i-th port, and l represents a symbol number;

For cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

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

at this time, ifSubstituted into->The following expression is obtained:

where u e {0,1,., 29},represents a sequence length corresponding to u +.>Values as shown in tables 1 to 4. In addition, a->The value of (c) may also refer to 3gpp ts38.211.

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

at this time, ifSubstituted into->The following expression is obtained:

corresponding toIs expressed as follows:

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

first, u is a value andthe values are correlated. For example, u fetchValue and->The values are the same: when->When the value is 1, u is 1; when->When the value is 2, u is 2;When the value is 3, u is 3. The corresponding manner is not limited thereto.

Second, u is a value andthe value is related to the current port number. For example, total port number->2- >The value is 12 @, @>Take the value of 2, p _i =i+1000, i e {0,1}, SRS consecutive symbol number (in one slot) of 12, port 1 corresponds toThe corresponding phase rotation on each symbol at 2 corresponds to the sequence length M _ZC Sequence values of =12 and u=2, port 2 corresponds +.>The corresponding phase rotation on each symbol at 8 corresponds to the sequence length M _ZC The sequence values of=18 and u=2, the above is merely an example, and the corresponding manner is not limited thereto.

in another possible implementation, the random phase factor is:

The SRS sequence satisfies the following formula:

wherein,is a low peak-to-average ratio sequence,/->Is a low peak-to-average ratio sequence base sequence; p is p _i Representing the current port number, l' representing the symbol number or symbol index or symbol number +.> The number of continuous symbols of SRS resources in one time slot;

K _TC for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRS，b Is related to the frequency hopping parameter; for a description of the frequency hopping parameters, please refer to the method embodiment.

Phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

δ＝log ₂ (K _TC )；

n _rand for determining random phase rotations on different symbols;

alternatively, n _rand The following formula is satisfied:

In another possible implementation, the random phase factor is:

the SRS sequence satisfies the following formula:

or->

Is a low peak-to-average ratio sequence,/->Is a low peak-to-average ratio sequence base sequence; p is p _i Representing the current port number, l' representing the symbol number or symbol index or symbol number +.> Is the number of consecutive symbols in a slot;

K _TC for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRS，b Is related to the frequency hopping parameter; for the description of the frequency hopping parameter, reference may be made to the description of the above method embodiments, and the description is omitted here.

Phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing 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; u may be a preset value or configured by the network device, for example, by:

first, u is a value andthe values are correlated. For example, u takes the value and +. >The values are the same: when->When the value is 1, u is 1; when->When the value is 2, u is 2;When the value is 3, u is 3. The corresponding manner is not limited thereto.

Second, u is a value andthe value is related to the current port number. For example, total port number->2->The value is 12 @, @>Take the value of 2, p _i =i+1000, i e {0,1}, SRS consecutive symbol number (in one slot) of 12, port 1 corresponds toEach of 2The corresponding phase rotation on the symbol corresponds to the sequence length M _ZC Sequence values of =12 and u=2, port 2 corresponds +.>The corresponding phase rotation on each symbol at 8 corresponds to the sequence length M _ZC The sequence values of=18 and u=2, the above is merely an example, and the corresponding manner is not limited thereto.

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

δ＝log ₂ (K _TC )。

according to the embodiment of the application, the random phase factors are introduced, so that the 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 application also provides a communication device 700, and the communication device 700 can be a terminal device or a chip. The communication device 700 may be used to perform the above-described method embodiments.

Fig. 7 shows a simplified schematic diagram of a terminal device when the communication device 700 is a terminal device. The terminal device is illustrated as a mobile phone in fig. 7 for easy understanding and convenient illustration. 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 mainly used for storing software programs and data. The radio frequency circuit is mainly used for converting a baseband signal and a radio frequency signal and processing the radio frequency signal. 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 mainly used for receiving data input by a user and outputting data to the user. It should be noted that some kinds of terminal apparatuses may not have an input/output device.

When data need to be sent, the processor carries out baseband processing on the data to be sent and then outputs a baseband signal to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signal and then sends the radio frequency signal outwards in the form of electromagnetic waves through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor are shown in fig. 7, and in an actual end device product, one or more processors and one or more memories may be present. The memory may also be referred to as a storage medium or storage device, etc. The memory may be provided separately from the processor or may be integrated with the processor, as the embodiments of the application are not limited in this respect.

In the embodiment of the application, the antenna and the radio frequency circuit with the receiving and transmitting functions can be regarded as a receiving and transmitting unit of the terminal equipment, and the processor with the processing function can be regarded as a processing unit of the terminal equipment.

As shown in fig. 7, the terminal device includes a transceiving unit 710 and a processing unit 720. The transceiver unit 710 may also be referred to as a transceiver, a transceiver device, etc. The processing unit 720 may also be referred to as a processor, a processing board, a processing module, a processing device, etc. Alternatively, the device for implementing the receiving function in the transceiver unit 710 may be regarded as a receiving unit, and the device for implementing the transmitting function in the transceiver unit 710 may be regarded as a transmitting unit, i.e., the transceiver unit 710 includes a receiving unit and a transmitting unit. The transceiver unit may also be referred to as a transceiver, transceiver circuitry, or the like. The receiving unit may also be referred to as a receiver, or receiving circuit, among others. The 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 method embodiments described above. The transceiver unit 710 is used for the related transceiving operations in the above-described method embodiment. For example, the transceiver 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 above-described 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 transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit or a communication interface; the processing unit may be an integrated processor or microprocessor or an integrated circuit on the chip.

The embodiment of the application also provides a communication device 800, and the communication device 800 can 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. Fig. 8 shows a simplified schematic of a base station architecture. The base station includes 810 part and 820 part. The 810 part is mainly used for receiving and transmitting radio frequency signals and converting the radio frequency signals and baseband signals; the 820 part is mainly used for baseband processing, control of the base station, etc. Section 810 may be generally referred to as a transceiver unit, transceiver circuitry, or transceiver, etc. Portion 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 operations on the network device side in the above method embodiment.

The transceiver unit of section 810, which may also be referred to as a transceiver or transceiver, includes an antenna and a radio frequency unit, wherein the radio frequency unit is configured to perform radio frequency processing. Alternatively, the device for implementing the receiving function in section 810 may be regarded as a receiving unit, and the device for implementing the transmitting function may be regarded as a transmitting unit, i.e. section 810 includes a receiving unit and a transmitting unit. The receiving unit may also be referred to as a receiver, or a receiving circuit, etc., and the transmitting unit may be referred to as a transmitter, or a transmitting circuit, etc.

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 for reading and executing the program in the memory to realize the baseband processing function and control of the base station. If there are multiple boards, the boards can be interconnected to enhance processing power. As an alternative implementation manner, the multiple boards may share one or more processors, or the multiple boards may share one or more memories, or the multiple boards may share one or more processors at the same time.

For example, in one implementation, portion 820 is used to perform the method embodiments described above. Section 810 is used for the transceiving operations associated with the method embodiments described above. For example, portion 810 is for receiving one or more symbols.

It should be understood that fig. 8 is only an example and not a limitation, and that the above-described 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 transceiver unit and a processing unit. The receiving and transmitting unit can be an input and output circuit and a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit on the chip.

The embodiment of the application also provides a computer readable storage medium, on which a computer program is stored, which when executed by a computer causes the computer to implement the above-mentioned method embodiment.

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

Any explanation and beneficial effects of the related content in any of the communication devices provided above may refer to the corresponding method embodiments provided above, and are not described herein.

In the embodiment of the application, the terminal equipment or the network equipment comprises 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 (central processing unit, CPU), a memory management unit (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 processes 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 book, word processing software, instant messaging software and the like. Further, the embodiment of the present application is not particularly limited to the specific structure of the execution body of the method provided by the embodiment of the present application, as long as the communication can be performed by the method provided according to 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, and for example, the execution 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 in the terminal device or the network device that can call the program and execute the program.

Furthermore, various aspects or features of the 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 encompasses 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, etc.), optical disks (e.g., compact Disk (CD), digital versatile disk (digital versatile disc, DVD), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROM), cards, sticks, key drives, etc.). Additionally, 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 appreciated that the processors referred to in embodiments of the present application may be central processing units (Central Processing Unit, CPU), but may also be other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate arrays (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be understood that the memory referred to in embodiments of the present application may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM).

Note that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, the memory (storage module) is integrated into 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 solution. 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 will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown 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 may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in 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 this understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a read-only memory (ROM), a random access memory (random access memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within 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

1. A method of reference signal processing, comprising:

generating a sequence of reference signals, wherein the phase alpha of the cyclic shift of the sequence _i,l In relation to a random phase factor, wherein i represents transmitting the reference signal by using an i-th port, and l represents a symbol number or a symbol index or a symbol number of the sequence map, wherein the random phase factor represents that the sequence map has different cyclic shift values when different symbols are mapped;

mapping the sequence to one or more symbols and transmitting;

wherein the random phase factor is related to a symbol index corresponding to the symbol mapped by the sequence and a slot index corresponding to the mapped slot.

2. The method of claim 1, wherein the random phase factor is:

the phase alpha of the cyclic shift _i,l The following are satisfiedThe formula:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

N _CS the value is an integer greater than or equal to 2, or, and The same;

n _rand for determining random phase rotations on different symbols;

wherein n is _rand The following formula is satisfied:

wherein,a time slot index representing the mapping of the pseudo-random sequence, i representing a symbol index or symbol number within the time slot, c (i) is a pseudo-random sequence, an initial value c _init Is->Representing a sequence index or a resource index, wherein the value of K is an integer greater than or equal to 0;

alternatively, n _rand The following formula is satisfied:

where l represents the symbol index in slot and c (i) is the initial value of the pseudorandom sequenceThe value of K can be an integer greater than or equal to 0.

3. The method of claim 1, wherein the random phase factor is

The phase alpha of the cyclic shift _i,l The following formula is satisfied:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

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

n _rand for determining random phase rotations on different symbolsTurning;

wherein n is _rand The following formula is satisfied:

alternatively, n _rand The following formula is satisfied:

4. A method according to claim 2 or 3, characterized in that the sequence is a pseudo-random sequence.

5. The method of claim 1, wherein the random phase factor is:or alternatively

The cyclic shift phase alpha _i,l The following formula is satisfied:

or,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing 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 _ZC E {6,12,18,24}, the sequence expression is:

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

6. a method of reference signal processing, the method comprising:

receiving one or more symbols from a terminal;

obtaining a reference signal, wherein the phase alpha of the cyclic shift of the sequence of the reference signal _i,l In relation to a random phase factor, wherein i denotes that the reference signal is transmitted through an i-th port, and l denotes the symbol number or symbol index or symbol number of the sequence map;

measuring the reference signal and determining the position information of the terminal according to the measurement result;

wherein the random phase factor is associated with a symbol index corresponding to the symbol mapped by the sequence and a slot index of the mapped slot.

7. The method of claim 6, wherein the random factor is:

the phase alpha of the cyclic shift _i,l The following formula is satisfied:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

wherein,a time slot index representing the mapping of the pseudo-random sequence, i representing a symbol index or symbol number within the time slot, c (i) is a pseudo-random sequence, an initial value c _init Is->Represents the sequence index or the resource index, and the value of K is more than or equal to 0A number;

alternatively, n _rand The following formula is satisfied:

8. The method of claim 6, wherein the random phase factor is:

the phase alpha of the cyclic shift _i,l The following formula is satisfied:

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 p _i Representing a current port number;

where l represents the symbol index in slot and c (i) is the initial value of the pseudorandom sequenceThe value of K can be an integer greater than or equal to 0;

Alternatively, n _rand The following formula is satisfied:

9. The method according to claim 7 or 8, wherein the sequence is a pseudo-random sequence.

10. The method of claim 6, wherein the random phase factor isOr,

the phase alpha of the cyclic shift _i,l The following formula is satisfied:

or,

wherein i represents an i-th port, and l represents a symbol number;

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number;

p _i representing 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 (r) _u,v () Is a low peak-to-average ratio sequence base sequence; when the sequence length is M _ZC E {6,12,18,24}, the sequence expression is:

when the sequence length is M _zC When=30, the sequence expression is:

11. an apparatus for reference signal processing, comprising:

a generation unit for generating a sequence of reference signals, wherein the phase alpha of the cyclic shift of the sequence _i,l In relation to a random phase factor, wherein i represents transmitting the reference signal by using an 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;

12. The apparatus of claim 11, wherein the random phase factor is:

the phase alpha of the cyclic shift _i,l The following formula is satisfied:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

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

n _rand for determining random phase rotations on different symbols;

wherein n is _rand The following formula is satisfied:

Alternatively, n _rand The following formula is satisfied:

13. The apparatus of claim 11, wherein the random phase factor is:

the phase alpha of the cyclic shift _i,l The following formula is satisfied:

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

granularity representing random phase rotation;

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

n _rand for determining random phase rotations on different symbols;

wherein n is _rand The following formula is satisfied:

alternatively, n _rand The following formula is satisfied:

14. The apparatus of claim 12 or 13, wherein the sequence is a pseudo-random sequence.

15. The apparatus of claim 11, wherein the random phase factor is:or (F)>

The cyclic shift phase alpha _i,l The following formula is satisfied:

or,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

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

16. 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 the phase alpha of the cyclic shift of the sequence of the reference signal _i,l In relation to a random phase factor, wherein i denotes that the reference signal is transmitted through an i-th port, and l denotes the symbol number or symbol index or symbol number of the sequence map;

The processing unit is further used for measuring the reference signal and determining the position information of the terminal according to the measurement result;

17. The apparatus of claim 16, wherein the random factor is:

the phase alpha of the cyclic shift _i,l The following formula is satisfied:

or,

wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

alternatively, n _rand The following formula is satisfied:

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

18. The apparatus of claim 16, wherein the random phase factor is:

the phase alpha of the cyclic shift _il The following formula is satisfied:

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 p _i Representing a current port number;

alternatively, n _rand The following formula is satisfied:

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

19. The apparatus of claim 17 or 18, wherein the sequence is a pseudo-random sequence.

20. The apparatus of claim 16, wherein the random phase factor is Or,

the phase alpha of the cyclic shift _i,l The following formula is satisfied:

or,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number;

p _i representing a current port number;

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

represents a sequence length corresponding to u +.>Values.

21. A computer readable storage medium storing computer instructions which, when executed, cause a computer to perform the method of any one of claims 1-5 or cause a computer to perform the method of any one of claims 6-10.

22. 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;

transmitting the one or more symbols mapped with the sequence to a network device;

Wherein the phase alpha of the cyclic shift of the sequence _i,l The random phase factor is associated with a symbol index corresponding to the symbol mapped by the sequence and a slot index of the mapped slot.

23. The method of claim 22 wherein the reference signal is an SRS, the sequence of which satisfies the following equation:

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

when the sequence length is M _ZC E {6,12,18,24}, the sequence expression is:

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

p _i representing the current port number, l' representing the number of symbols or the symbol index or the symbol number, nsymbs SRS is the number of consecutive symbols of SRS resources in one slot;

for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRSb Is related to the frequency hopping parameter;

phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

δ＝log ₂ (K _TC )；

n _rand for determining random phase rotations on different symbols;

represents a sequence length corresponding to u +.>Values.

24. The method of claim 23, wherein n is _rand Is a rational number received from the network device.

25. The method of claim 23, wherein n is _rand The following formula is satisfied:

26. The method of claim 23, wherein n is _rand The following formula is satisfied:

27. The method of claim 22 wherein the reference signal is an SRS, the sequence of which satisfies the following equation:

or,

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

when the sequence length is M _ZC E {6,12,18,24}, the sequence expression is:

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

p _i representing the current port number, l' representing the number of symbols or the symbol index or the symbol number, Nsymbs srs is the number of consecutive symbols in a slot;

for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRS,b Is related to the frequency hopping parameter;

phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing the current port number.

28. The method according to any one of claims 22-26, further comprising:

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

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

wherein the random phase rotation type includes a pseudo random sequence and a low peak-to-average ratio sequence.

29. 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 transmitting unit, configured to transmit the one or more symbols mapped with the sequence to a network device;

30. The apparatus of claim 29, wherein the reference signal is an SRS, and wherein the sequence satisfies the following equation:

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

when the sequence length is M _ZC E {6,12,18,24}, the sequence expression is:

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

p _i representing the current port number, l' representing the number of symbols or the symbol index or the symbol number,1, nsymbs SRS is the number of continuous symbols of SRS resources in one slot;

phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

δ＝log ₂ (K _TC )；

n _rand for determining random phase rotations on different symbols;

represents a sequence length corresponding to u +.>Values.

31. The apparatus of claim 30, wherein n is _rand Is received from a network device.

32. The apparatus of claim 30, wherein n is _rand The following formula is satisfied:

wherein,representation ofThe time slot index mapped by the pseudo-random sequence, i represents the number of symbols or the symbol index or the symbol number in the time slot, N _CS The value is an integer greater than or equal to 2, or N _CS Take value and +.>Similarly, c (i) is a pseudo-random sequence, initial value c _init Is->And (3) representing a sequence index or a resource index, wherein the value of K is an integer greater than or equal to 0.

33. The apparatus of claim 30, wherein n is _rand The following formula is satisfied:

34. The apparatus of claim 29, wherein the reference signal is an SRS, and wherein the sequence satisfies the following equation:

or,

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

when the sequence length is M _ZC E {6,12,18,24}, the sequence expression is:

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

K _TC for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRSb Is related to the frequency hopping parameterClosing;

phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing the current port number.

35. The apparatus according to any of claims 29-34, further comprising a receiving unit configured to receive reference signal configuration information from a network device, the configuration information comprising one or more of:

random phase rotation type, random phase rotation value group, random phase rotation granularity N _CS And binary bit number K, low peak-to-average ratio sequence length M _ZC Low peak-to-average ratio sequence group number offset;

36. A method of reference signal processing, comprising:

receiving one or more symbols, the symbols having reference signals mapped thereon; wherein the reference signal sequences on different symbols have different cyclic shifts;

measuring the reference signal;

wherein the phase alpha of the cyclic shift of the reference signal sequence _i,l The random phase factor is associated with a symbol index corresponding to the symbol mapped by the sequence and a slot index of the mapped slot.

37. An apparatus for reference signal processing, comprising:

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

a processing unit for measuring the reference signal;

38. The method or apparatus of claim 36 or 37, wherein the reference signal is an SRS, the sequence of which satisfies the following formula:

wherein,is a low peak-to-average ratio sequence,

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

when the sequence length is M _ZC E {6,12,18,24}, the sequence expression is:

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

K _TC for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRS,b Is related to the frequency hopping parameter;

phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing a current port number;

δ＝log ₂ (K _TC )；

n _rand for determining random phase rotations on different symbols;

represents a sequence length corresponding to u +.>Values.

39. The method or apparatus of claim 38, wherein the n _rand The following formula is satisfied:

40. The method or apparatus of claim 38, wherein the reference signal is an SRS, the sequence of which satisfies the following equation:

wherein,or (F)>

Will beSubstituting the formula to obtain the following formula:

will beSubstituting the formula to obtain the following formula:

wherein,is a low peak-to-average ratio sequence,

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

when the sequence length is M _ZC E {6,12,18,24}, the sequence expression is:

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

K _TC for comb value, ++>Is the number of resource blocks in one subcarrier, m _SRSb Is the value of the parameter and the frequency hopping parameterThe numbers b and c are related;

phase of cyclic shift

Wherein,

representing a maximum cyclic displacement value;

for cyclic shift, the value range is +.>

Is the total port number; p is p _i Representing the current port number.

41. The method of claim 36, wherein the method further comprises:

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

42. The method of claim 36 or 41, further comprising:

and sending a position information response to the positioning device.

43. The method of claim 36 or 41 or 42, 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, random phase rotation value group, random phase rotation granularity N _CS And binary bit number K, low peak-to-average ratio sequence length M _ZC Low peak-to-average ratio sequence group number offset.

44. The apparatus of claim 37, wherein the receiving unit is further configured to receive a location information request from a positioning device, the location information request carrying one or more of:

45. The apparatus according to claim 37 or 44, further comprising a transmitting unit for transmitting a location information response to the positioning device.