CN117834364A

CN117834364A - Reference signal processing method, device and system

Info

Publication number: CN117834364A
Application number: CN202311704772.9A
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: 2024-04-05
Also published as: CN114287123A; WO2021046948A1; CN114287123B; WO2021046823A1

Abstract

The application discloses a processing method, a device and a system of a reference signal. 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 a symbol index of the sequence map, wherein the random phase factor denotes that the sequence map has different cyclic shift values when different symbols; the sequence is mapped to one or more symbols and transmitted. According to the technical scheme provided by the embodiment of the application, when the sequence of the reference signals is generated, 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

The present application is a divisional application, the application number of the original application is 201980099651.1, the date of the original application is 2019, 9, 30, and the entire contents of the original application are incorporated herein by reference.

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 numbers are 1,2 and 4, the comb (comb) value is 2,4 and 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 cyclic shift in the sequence adopted by SRS in the prior NR system is related to four items of maximum cyclic shift number, total number of antenna ports, current port number and comb offset value, wherein the phase alpha of the 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./>Indicating comb offset value with a range of values P 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, device and system, so that the cyclic shifts of SRSs with different symbols on the same port are different, interference between terminals is reduced, and delay estimation accuracy is improved.

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,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; 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 transmitted reference signals of other terminals, 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; alternatively, the computer searches for the generated 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 comb offset value, 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 sequenceThe 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 comb offset value, 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 the maximum cyclic bitShifting the value;

for comb offset value, 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:

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.

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 comb offset value, 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: (-jlgr) _u,v (n)) or

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

or,

representing a maximum cyclic displacement value;

for comb offset value, 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; r is (r) _u,v (l) Searching the generated sequence for a computer;

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 second aspect, embodiments of the present application further provide a reference signal processing method, where the method includes: 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 number of symbols or symbol index or symbol number of the sequence map, wherein the random phase factor denotes that the sequence map has different cyclic shift values when different symbols; the reference signal is measured.

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

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; alternatively, the computer searches for the generated 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,

representing a maximum cyclic displacement value;

for comb offset value, 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:

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 comb offset value, 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 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-jlgr _u,v (l) Alternatively, the first and second substrates may be coated,

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

or,

Representing a maximum cyclic displacement value;

for comb offset value, 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 (l) Searching the generated sequence for a computer; 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 third aspect, embodiments of the present application further provide 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 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; a processing unit for mapping the sequence to one or more symbols; and a transmitting unit, configured to transmit the one or more symbols.

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 comb offset value, 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 comb offset value, 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: (-jlgr) _u,v (n)) or, alternatively,

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

or,

where i represents the i-th port, l represents the number of symbols or the symbol index or the symbol number

Representing a maximum cyclic displacement value;

for comb offset value, 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:

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, and l denotes the number of symbols or symbol index or symbol number of the sequence map, 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 comb offset value, the value range is +.>

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

wherein,time slot cable representing the pseudo-random sequence mapReferring to, l represents the number of symbols or symbol index or symbol number in the time slot, c (i) is a pseudo-random sequence, and the initial value 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:

representing a maximum cyclic displacement value;

for comb offset value, 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.

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

or,

representing a maximum cyclic displacement value;

for comb offset value, 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 (l) A sequence generated by means of computer searching; when the sequence length is M _ZC E {6,12,18,24}, the sequence expression is:

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

in a fifth aspect, embodiments of the present application further 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, including a processor and a memory, the 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, embodiments of the present application further provide 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.

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 transmitted reference signals of other terminals, interference between the terminals can be effectively reduced, the accuracy of positioning parameter estimation is improved, and the positioning precision is further improved.

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. 4 is a schematic diagram of a method for processing a reference signal 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 view of another apparatus provided in an embodiment of the present application;

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

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

Detailed Description

Embodiments of the present application will now be described with reference to the accompanying drawings, in which it is apparent 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 solutions provided in the embodiments of the present application are applicable to similar technical problems.

The term "and/or" appearing in the present application may be an association relationship describing an associated object, meaning that there may be three relationships, for example, a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In this application, the character "/" generally indicates that the associated object is an or relationship.

The terms first, second and the like in the description and in the claims of the present application and in the above-described figures, are used for distinguishing between similar objects 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 application, for example, a plurality of modules may be combined or integrated in another system, or some features may be omitted or not implemented, and in addition, coupling or direct coupling or communication connection between the modules that are shown or discussed may be through some interfaces, and indirect coupling or communication connection between the modules may be in an electrical or other similar form, which is not limited in this application. The modules or sub-modules described as separate components may or may not be physically separate, 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 purposes of the present application.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: 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 an 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 in 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 referred to in the embodiments of the present application may include various handheld devices, vehicle-mounted devices, wearable devices, computing devices, or other processing devices connected to a wireless modem with wireless communication functions.

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

2. Network equipment: the network device may be an evolved base station (evolvedNodeB, eNB or eNodeB) in the LTE system, a base station (base transceiver station, BTS) in the global system for mobile communications (global system formobile 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 radio controller in the cloud radio access network (cloud radio access network, CRAN) scenario, or a relay station, an access point, a vehicle device, a wearable device, a network device in a 5G network, or a network device in a future evolved PLMN network, etc., and the embodiments of the present application are not limited.

3. Mobility management entity (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 downlink signals.

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 in 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, in embodiments of the present application, referred to as a positioning management device. 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 present application does not limit the name of the location management device, and in future evolution technologies, the location management device may be given other names.

It should be understood that the network architecture applied to the embodiments of the present application is merely illustrative, and the network architecture applicable to the embodiments of the present application is not limited thereto, 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 embodiments of the present application may be applied to other positioning systems.

It should also be understood that the above-mentioned "network element" may also be referred to as an entity, a device, an apparatus, a module, etc., and the present application is not particularly limited. Also, in this application, for convenience of understanding and explanation, a 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 hereinafter, 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 in this 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, which does not exclude the possibility of employing other designations in 5G networks as well as 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. 4, an embodiment of the present application provides a method 400 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.

Wherein the random phase factor is related to any one of three 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, the generated sequence is searched by a computer.

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 comb offset value, 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 random phase rotations on different symbols.

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, a 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 comb offset value, 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.

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: (-jlgr) _u,v (n)) or

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

wherein,

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

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 comb offset value, the value range is +.>

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

r _u,v (n) is a sequence (sequence length)<36 When the sequence length M _ZC E {6,12,18,24}, the sequence expression is:

at this time, ifSubstituted into-jlgr _u,v (n) to obtain the following expression:

where u.epsilon. {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:

corresponding toIs expressed as follows:

the length of the sequence is 5, and the selected 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, the sequence with the length of 12,18,24,30 can be selected.

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, 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 22, p _i =i+1000, i e {0,1}, SRS consecutive symbol number (in one slot) of 12, port 1 corresponding +.>The 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 corresponding manner is not limited thereto.

In the third implementation, the method is implemented by the method in alpha _i,l Up-increasing random phase factor (-jlgr) _u,v (n)) orThe 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.

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 embodiments provided by the embodiments of the present application are described above, and the device embodiments provided by the embodiments 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 present application. The apparatus 500 includes the following units.

A generating unit 510 for generating a reference signal sequence, wherein the phase alpha of the cyclic shift of the sequence _i,l Is related to a random phase factor, wherein i represents the samplingTransmitting the reference signal by using an ith port, wherein l represents the symbol number of the sequence mapping, and the random phase factor represents that the sequence mapping has different cyclic displacement values when different symbols are mapped;

a generating unit 520 for mapping the sequence onto one or more symbols;

a transmitting unit 530, configured to transmit the one or more symbols.

Correspondingly, the embodiment of the application also provides a schematic diagram of an apparatus 600 for processing a reference signal, as shown in fig. 6, the apparatus 600 includes the following units.

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

a processing unit 620 for obtaining the reference signal, the phase alpha of the cyclic shift of the sequence of the reference signal _i,l In relation to a random phase factor, where i denotes the number of symbols or symbol index or symbol number mapped by the sequence, i denotes the transmission of the reference signal using the i-th port.

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; alternatively, the generated sequence is searched by a computer.

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 comb offset value, 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 beAn integer of 2 or more, or may be combined withThe same applies.

n _rand For determining random phase rotations on different symbols.

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

wherein l represents the number of symbols or symbol index or symbol number in slot, c (i) is the initial value of pseudo-random sequenceMay be a sequence index or a resource indexThe value of K may be an integer of 0 or more.

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 comb offset value, 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.

Another kind of canIn the energy implementation mode, n _rand The value mode of (a) is only related to the symbol index, and the expression is:

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 comb offset value, the value range is +.>

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

at this time, ifSubstituted into-jlgr _u,v (n) to obtain the following expression: />

Where u.epsilon. {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:

corresponding toIs expressed as follows:

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, which is not limited by the embodiments of the present application.

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

As shown in fig. 7, the terminal device includes a transceiving unit 710 and a processing unit 720. The 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 may be a network device or a chip. The communication device 800 may be used to perform the above-described method embodiments.

When the communication device 800 is a network device, for example, a base station. 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 present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a computer, causes the computer to implement the above-described method embodiments.

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 device or the network device includes a hardware layer, an operating system layer running above the hardware layer, and an application layer running above 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 in the embodiment of the present application, as long as the communication can be performed by the method provided in the embodiment of the present application by running the program recorded with the code of the method provided in the embodiment of the present application, and for example, the execution body of the method provided in 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 present application may be implemented as a method, apparatus, or article of manufacture using standard programming and/or engineering techniques. The term "article of manufacture" as used herein 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 versatiledisc, 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 the 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 the 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 in this 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 each embodiment 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 such 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, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in 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 specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

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 using an i-th port, and l represents a symbol index of the sequence map, wherein the random phase factor represents that the sequence map has different cyclic shift values when different symbols;

the sequence is mapped to one or more symbols and transmitted.

2. The method of claim 1, wherein the random phase factor is associated with a symbol index corresponding to symbols mapped by the sequence and a slot index corresponding to mapped slots.

3. The method according to claim 1 or 2, wherein the random phase factor is:wherein N is _CS For maximum cyclic displacement value, n _rand For determining random phase rotations on different symbols, n _rand Is associated with the slot index and the symbol index.

4. The method of claim 3, wherein the step of,

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

wherein,

where i represents the i-th port and l represents the symbol index;

Representing a maximum cyclic displacement value;

for comb offset value, the value range is +.>

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

5. The method of claim 1, wherein the sequence is a pseudo-random sequence.

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 a symbol index of the sequence map;

the reference signal is measured.

7. The method of claim 6, wherein the random phase factor is associated with a symbol index corresponding to symbols mapped by the sequence and a slot index corresponding to mapped slots.

8. The method according to claim 6 or 7, wherein the random phase factor is:wherein N is _CS For maximum cyclic displacement value, n _rand For determining random phase rotations on different symbols, n _rand Is associated with the slot index and the symbol index.

9. The method of claim 8, wherein the step of determining the position of the first electrode is performed,

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

wherein,

where i represents the i-th port and l represents the symbol index;

representing a maximum cyclic displacement value;

for comb offset value, the value range is +.>

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

10. The method of claim 6, wherein the sequence is a pseudo-random sequence.

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 using an i-th port, and l represents a symbol index of the sequence map, wherein the random phase factor represents that the sequence map has different cyclic shift values when different symbols;

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

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

12. The apparatus of claim 11, wherein the random phase factor is associated with a symbol index corresponding to symbols mapped by the sequence and a slot index corresponding to mapped slots.

13. The apparatus according to claim 11 or 12, wherein the random phase factor is:wherein N is _CS For maximum cyclic displacement value, n _rand For determining random phase rotations on different symbols, n _rand Is associated with the slot index and the symbol index.

14. The apparatus of claim 13, wherein the device comprises a plurality of sensors,

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

wherein,

where i represents the i-th port and l represents the symbol index;

representing a maximum cyclic displacement value;

for comb offset value, the value range is +.>

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

15. The apparatus of claim 11, wherein the sequence is a pseudo-random sequence.

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 a symbol index of the sequence map;

the processing unit is further configured to measure the reference signal.

17. The apparatus of claim 16, wherein the random phase factor is associated with a symbol index corresponding to symbols mapped by the sequence and a slot index corresponding to mapped slots.

18. The apparatus of claim 16 or 17, wherein the random factor is:wherein N is _CS For maximum cyclic displacement value, n _rand For determining random phase rotations on different symbols, n _rand Is associated with the slot index and the symbol index.

19. The apparatus of claim 18, wherein the device comprises a plurality of sensors,

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

wherein,

where i represents the i-th port and l represents the symbol index;

representing a maximum cyclic displacement value;

for comb offset value, the value range is +.>

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

20. The apparatus of claim 16, wherein the sequence is a pseudo-random sequence.

21. A communication system comprising a network device and a terminal device, wherein the terminal device comprises the apparatus of any of claims 11 to 15, and the network device comprises the apparatus of any of claims 16 to 20.

22. A communication device is characterized by comprising a processor and a memory,

the memory is for storing a computer program or instructions, and the processor is for executing the computer program or instructions in the memory, such that the method of any one of claims 1 to 5 is performed, or such that the method of any one of claims 6 to 10 is performed.

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