CN117914424A

CN117914424A - Doppler measurement method and device and communication equipment

Info

Publication number: CN117914424A
Application number: CN202211237042.8A
Authority: CN
Inventors: 姚健; 秦飞; 刘昊
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2024-04-19
Also published as: WO2024078378A1

Abstract

The application discloses a Doppler measurement method, a Doppler measurement device and communication equipment, which belong to the technical field of communication, and the Doppler measurement method of the embodiment of the application comprises the following steps: the first device sends a first signal to the second device; the first device receives a second signal sent by the second device, wherein the second signal is a signal obtained by the second device executing a first operation on the first signal; the first device performs Doppler measurements based on the second signal.

Description

Doppler measurement method and device and communication equipment

Technical Field

The application belongs to the technical field of communication, and particularly relates to a Doppler measurement method, a Doppler measurement device and communication equipment.

Background

The Doppler measurement is a common measurement in communication equipment, and the current measurement mode is that a transmitting device transmits signals to a receiving device, and the receiving device performs Doppler measurement based on the received signals, so that clock deviation may exist between the transmitting device and the receiving device, and further the accuracy of Doppler measurement results is poor.

Disclosure of Invention

The embodiment of the application provides a Doppler measurement method, a Doppler measurement device and communication equipment, which can solve the problem of relatively poor accuracy of Doppler measurement results.

In a first aspect, a doppler measurement method includes:

the first device sends a first signal to the second device;

The first device receives a second signal sent by the second device, wherein the second signal is a signal obtained by the second device executing a first operation on the first signal;

the first device performs Doppler measurements based on the second signal.

In a second aspect, a doppler measurement method is provided, including:

the second device receives a first signal sent by the first device;

The second device executes a second signal obtained by a first operation on the first signal;

the second device transmits the second signal to the first device.

In a third aspect, there is provided a doppler measurement device comprising:

a first transmitting module for transmitting a first signal to a second device;

the first receiving module is used for receiving a second signal sent by the second device, wherein the second signal is a signal obtained by the second device executing a first operation on the first signal;

and the measurement module is used for carrying out Doppler measurement based on the second signal.

In a fourth aspect, there is provided a doppler measurement device comprising:

The first receiving module is used for receiving a first signal sent by the first equipment;

the execution module is used for executing a second signal obtained by a first operation on the first signal;

and the first transmitting module is used for transmitting the second signal to the first equipment.

In a fifth aspect, a communication device is provided, where the terminal includes a processor and a memory, where the memory stores a program or instructions executable on the processor, and where the program or instructions implement steps of a doppler measurement method on a first device side as provided by an embodiment of the present application when executed by the processor.

In a sixth aspect, a communication device is provided, including a processor and a communication interface, where the communication interface is configured to send a first signal to a second device; receiving a second signal sent by the second device, wherein the second signal is a signal obtained by the second device executing a first operation on the first signal; the processor or communication interface is for making doppler measurements based on the second signal.

In a seventh aspect, a communication device is provided, which includes a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the doppler measurement method on the second device side as provided by the embodiment of the present application.

An eighth aspect provides a communication device, including a processor and a communication interface, where the communication interface is configured to receive a first signal sent by a first device; the communication interface or the processor is used for executing a second signal obtained by a first operation on the first signal; the communication interface is also configured to send the second signal to the first device.

In a ninth aspect, there is provided a doppler measurement system comprising: the first device may be used for executing the steps of the Doppler measurement method at the first device side provided by the embodiment of the application, and the second device may be used for executing the steps of the Doppler measurement method at the second device side provided by the embodiment of the application.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which, when executed by a processor, implement the steps of the doppler measurement method on the first device side as provided by the embodiment of the present application, or implement the steps of the doppler measurement method on the second device side as provided by the embodiment of the present application.

In an eleventh aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, where the processor is configured to execute a program or instructions to implement a doppler measurement method on a first device side provided by an embodiment of the present application, or implement a doppler measurement method on a second device side provided by an embodiment of the present application.

In a twelfth aspect, a computer program/program product is provided, which is stored in a storage medium, and which is executed by at least one processor to implement the steps of the doppler measurement method on the first device side as provided by the embodiment of the present application, or which is executed by at least one processor to implement the steps of the doppler measurement method on the first device side as provided by the embodiment of the present application.

In the embodiment of the application, a first device sends a first signal to a second device; the first device receives a second signal sent by the second device, wherein the second signal is a signal obtained by the second device executing a first operation on the first signal; the first device performs Doppler measurements based on the second signal. Therefore, the second signal is obtained by executing the first operation on the first signal, so that the sending end and the receiving end of the signal for Doppler measurement are the same device, the problem that clock deviation exists between the sending end and the receiving end for different devices can be avoided, and the effect of improving the accuracy of Doppler measurement results is achieved.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

FIG. 2 is a schematic diagram of a scene of a perception measurement provided by an embodiment of the present application;

fig. 3 is a flowchart of a doppler measurement method according to an embodiment of the present application;

fig. 4 is a schematic diagram of a doppler measurement method according to an embodiment of the present application;

FIG. 5 is a schematic diagram of signal transmission according to an embodiment of the present application;

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

FIG. 7 is a schematic diagram of SNR calculation according to an embodiment of the present application;

Figure 8 is a flow chart of another doppler measurement method provided by an embodiment of the present application;

fig. 9 is a block diagram of a doppler measurement device according to an embodiment of the present application;

fig. 10 is a block diagram of a doppler measurement device according to an embodiment of the present application;

fig. 11 is a block diagram of a communication device according to an embodiment of the present application;

fig. 12 is a block diagram of another communication device provided by an embodiment of the present application;

fig. 13 is a block diagram of another communication device according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

The terms first, second and the like in the description and in the claims, 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 terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the "first" and "second" distinguishing between objects generally are not limited in number to the extent that the first object may, for example, be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It should be noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-advanced, LTE-A) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New Radio (NR) system for exemplary purposes and NR terminology is used in much of the following description, but these techniques may also be applied to applications other than NR system applications, such as 6 th Generation (6G) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop (laptop computer) or a terminal-side device called a notebook, a personal digital assistant (personal DIGITAL ASSISTANT, PDA), a palm computer, a netbook, an ultra-mobile personal computer (ultra-mobile personal computer, UMPC), a mobile internet appliance (mobile INTERNET DEVICE, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle-mounted device (VUE), a pedestrian terminal (PUE), a smart home (home device with a wireless communication function, such as a refrigerator, a television, a washing machine, a furniture, etc.), a game machine, a personal computer (personal computer, a PC), a teller machine, or a self-service machine, etc., and the wearable device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may include an access network device or a core network device, where the access network device may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function, or a radio access network element. The access network device may include a base station, a WLAN access point, a WiFi node, or the like, where the base station may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (basic SERVICE SET, BSS), an extended service set (extended SERVICE SET, ESS), a home node B, a home evolved node B, a transmission and reception point (TRANSMITTING RECEIVING point, TRP), or some other suitable term in the art, and the base station is not limited to a specific technical vocabulary so long as the same technical effect is achieved, and it should be noted that, in the embodiment of the present application, only the base station in the NR system is described by way of example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (mobility MANAGEMENT ENTITY, MME), access mobility management functions (ACCESS AND Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and Charging Rules Function (PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (unified DATA MANAGEMENT, UDM), unified data warehousing (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (local NEF, or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. It should be noted that, in the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

In the embodiment of the application, the network side equipment and the terminal can have the sensing capability, and can sense the information such as the azimuth, the distance, the speed and the like of the target object or detect, track, identify, image and the like of the target object, an event or the environment and the like through the sending and receiving of the wireless signals. Some perception functions and application scenarios are shown in table 1:

TABLE 1

It should be noted that the above-mentioned sensing categories shown in table 1 are only illustrative, and the sensing categories are not limited in the embodiment of the present application.

In addition, the embodiment of the application can be applied to a communication perception integrated scene, wherein communication perception integration means that communication and perception function integration design is realized through spectrum sharing and hardware sharing in the same system, the system can perceive information such as azimuth, distance, speed and the like while information is transmitted, target equipment or events are detected, tracked and identified, the communication system and the perception system complement each other, and the improvement of overall performance is realized and better service experience is brought.

For example: integration of communication and radar belongs to a typical communication perception integration (communication perception integration) application, and integration of communication and radar systems can bring about many advantages, such as saving cost, reducing size, reducing power consumption, improving spectral efficiency, reducing mutual interference, and the like, thereby improving overall system performance.

In the embodiment of the present application, according to the difference between the sensing signal transmitting node and the receiving node, the sensing signal transmitting node may include, but is not limited to, 6 sensing links shown in fig. 2. It should be noted that, in fig. 2, each sensing link is illustrated by using one transmitting node and one receiving node, in an actual system, different sensing links may be selected according to different sensing requirements, one or more transmitting nodes and one or more receiving nodes of each sensing link may be provided, and the actual sensing system may include a plurality of different sensing links. And the perception target in fig. 2 takes a person and a car as examples, and the perception target of an actual scene is richer assuming that neither the person nor the car carries or installs the signal receiving/transmitting device.

Perception link 1: the base station perceives itself spontaneously. In the mode, the base station transmits a sensing signal and obtains a sensing result by receiving an echo of the sensing signal;

perception link 2: and perceiving an air interface between base stations. In this manner, the base station 2 receives the sensing signal transmitted by the base station 1, and obtains a sensing result.

Perception link 3: and sensing an uplink air interface. In the mode, the base station receives the sensing signal sent by the terminal, and a sensing result is obtained.

Perception link 4: and sensing a downlink air interface. In the mode, the terminal receives the sensing signal sent by the base station, and a sensing result is obtained.

Perception link 5: the terminal perceives itself spontaneously. In the mode, the terminal sends a sensing signal and obtains a sensing result by receiving an echo of the sensing signal.

Perception link 6: the inter-terminal sidelink (Sidelink) is aware. For example, the terminal 2 receives the sensing signal transmitted by the terminal 1 to obtain a sensing result, or the terminal 1 receives the sensing signal transmitted by the terminal 2 to obtain a sensing result.

The following describes in detail a doppler measurement method, a device and a communication device provided by the embodiments of the present application through some embodiments and application scenarios thereof with reference to the accompanying drawings.

Referring to fig. 3, fig. 3 is a flowchart of a doppler measurement method according to an embodiment of the present application, as shown in fig. 3, including the following steps:

step 301, the first device sends a first signal to the second device.

The first device is a terminal or a network side device, the second device may be a network side device or a terminal when the first device is a terminal, and the second device may be a network side device or a terminal when the first device is a network side device.

The first signal may include at least one of:

reference signal, communication data signal, synchronization signal, sensing signal, and sense of general integrated signal.

The reference signal may be a reference signal such as a demodulation reference signal (demodulation REFERENCE SIGNAL, DMRS), a channel state information reference signal (CHANNEL STATE information-REFERENCE SIGNAL, CSI-RS), or a positioning reference signal (positioning REFERENCE SIGNAL, PRS), the synchronization signal may be a primary synchronization signal (Primary Synchronization Signal, PSS) or a secondary synchronization signal (Secondary Synchronization Signal, SSS), the sensing signal may be a chirp signal (chirp) or other signals for sensing measurement, and the sense-on integrated signal may be a signal for sensing and communication at the same time.

Step 302, the first device receives a second signal sent by the second device, where the second signal is a signal obtained by the second device executing a first operation on the first signal.

In some embodiments, the first signal is an uplink signal, and the second signal is a downlink signal, for example: the first device is a terminal, the second device is a network side device, the terminal transmits a first signal through an uplink time slot, and the network side device transmits a second signal through a downlink time slot.

In some embodiments, the first signal is a downlink signal, and the second signal is an uplink signal, for example: the first device is a network side device, the second device is a terminal, the network side device sends a first signal through a downlink time slot, and the terminal sends a second signal through an uplink time slot.

The first operation may be an operation agreed in advance by the first device and the second device, or the first operation may be an operation defined in a protocol, or the first operation may be an operation decided by the second device.

In some embodiments, the first operation described above includes, but is not limited to, at least one of frequency conversion, compensation, sampling, and the like.

The first device receiving the second signal of the inverse attitude of the second device may be that the second device feeds back the received signal to the first device after receiving the first signal. Specifically, after receiving the first signal, the second device performs the first operation on the first signal, and sends the second signal to the first device.

Step 303, the first device performs doppler measurement based on the second signal.

The first device performing doppler measurement based on the second signal may be that the first device detects a phase change in a time domain dimension of the second signal to obtain a doppler measurement result, for example: the first device performs a time domain fast fourier transform (Fast Fourier Transform, FFT) on the second signal to obtain a doppler measurement.

It should be noted that, since the first device transmits the first signal and receives the second signal, the doppler measurement in the embodiment of the present application may be referred to as round trip doppler (Round Trip Doppler, RTD) measurement, and the first signal and the second signal may be referred to as RTD measurement signals.

In the embodiment of the application, the second signal is the signal obtained by executing the first operation on the first signal through the steps, so that the sending end and the receiving end of the signal for Doppler measurement are the same equipment, the problem that clock deviation exists for different equipment at the sending end and the receiving end is avoided, and the effect of improving the accuracy of Doppler measurement results is achieved. Specifically, after the second signal is fed back to the first device through the second device, the influence of the frequency deviation of the receiving and transmitting clock in the signal is counteracted, and at the moment, the first device performs Doppler measurement without being influenced by the frequency deviation of the receiving and transmitting clock, so that the effect of accuracy of Doppler measurement results is improved.

As an alternative embodiment, the time domain resource formats of the first signal and the second signal are the same.

Wherein, the time domain resource formats are the same and may include at least one of the following:

the time domain resources have the same length and the same time domain resource interval;

the time domain resource interval of the first signal refers to an interval between two adjacent time domain resource units corresponding to the first signal, and the time domain resource interval of the second signal refers to an interval between two adjacent time domain resource units corresponding to the second signal.

The time domain resource interval may refer to an interval between adjacent time domain resource units in the plurality of time domain resource units corresponding to the signal, for example: the time domain resource of the first signal corresponds to a plurality of orthogonal frequency division multiplexing (Orthogonal frequency division multiplex, OFDM) symbols, i.e., the first signal corresponds to a plurality of occasions (occalations), and the time domain resource interval refers to a time interval between adjacent OFDM symbols.

The time domain resource unit may be a symbol, a sub-slot, or a time slot isochronous domain resource unit.

In this embodiment, since the time domain resource formats of the first signal and the second signal are the same, the first signal and the second signal have the same doppler measurement performance, so that the doppler measurement accuracy is further improved.

Optionally, the time domain resource lengths of the first signal and the second signal are associated with a preset doppler resolution.

The correlation between the time domain resource lengths of the first signal and the second signal and the preset doppler resolution may be that the time domain resource length of the first signal is correlated with the preset doppler resolution, and the time domain resource length of the second signal is correlated with the preset doppler resolution.

The association between the time domain resource length and the preset doppler resolution may be that the time domain resource length is determined by the preset doppler resolution, for example: and determining the length of the time domain resource according to the mapping relation between the length of the time domain resource agreed by the protocol and the preset Doppler resolution.

In this embodiment, since the time domain resource lengths of the first signal and the second signal are associated with the preset doppler resolution, the doppler measurement result obtained based on the measurement of the second signal may meet the requirement on the doppler resolution in the sensing requirement, or the accuracy of the sensing result calculated according to the doppler measurement result may meet the requirement.

Optionally, the time domain resource lengths of the first signal and the second signal are greater than or equal to a first value, where the first value is a value obtained by dividing 1 by the preset doppler resolution.

For example: the correlation between the time domain resource length of the first signal and the second signal and the preset Doppler resolution satisfies the following relation:

T.gtoreq.1/Δf _d, where T represents the time domain resource length and Δf _d represents the preset Doppler resolution.

Optionally, the time domain resource interval of the first signal is associated with a preset maximum unambiguous doppler shift, and the time domain resource interval of the second signal is associated with the preset maximum unambiguous doppler shift (otherwise referred to as preset maximum unambiguous doppler).

The association between the time domain resource interval of the first signal and the preset maximum non-ambiguity doppler shift may be that the time domain resource interval of the first signal is determined by the preset maximum non-ambiguity doppler shift, for example: and determining the time domain resource interval according to the mapping relation between the time domain resource interval agreed by the protocol and the preset maximum non-fuzzy Doppler frequency shift. The time domain resource interval of the second signal is the same.

In this embodiment, since the time domain resource interval of the first signal and the second signal is associated with the preset maximum non-ambiguity doppler shift, the occurrence of doppler ambiguity between the first signal and the second signal can be avoided, and the accuracy of doppler measurement can be further improved.

Optionally, the time domain resource interval of the first signal is less than or equal to a second value, and the time domain resource interval of the second signal is less than or equal to the second value; the second value is a value obtained by dividing 1 by a third value, the third value is equal to 2 times of the preset maximum non-fuzzy Doppler frequency shift, or the third value is 4 times of a fourth value, and the fourth value is an absolute value of a product of the preset maximum non-fuzzy Doppler frequency shift.

In some embodiments, the time domain resource interval may satisfy the following relationship regardless of the target motion speed direction in the channel:

ΔT≤1/(2·f_dmax)；

in some embodiments, the time domain resource interval may satisfy the following relationship in consideration of the target motion speed direction in the channel:

ΔT is less than or equal to 1/(2|2.f _dmax |), or ΔT is less than or equal to 1/(|4.f _dmax |);

Wherein, Δt is a time domain resource interval, and f _dmax is a preset maximum non-ambiguity doppler shift.

In some embodiments, the calculation of the doppler at the receiving end needs to be based on the time domain phase change of the signal, that is, 2pi f _d Δt=θ, where θ is Δt time-aware of the time domain phase change of the signal, and when the velocity direction is not considered, in order to ensure that the doppler ambiguity does not occur, it is required to satisfy θ=2pi f _d Δt less than or equal to 2pi, that is, the time domain resource interval relationship between the maximum non-ambiguous doppler shift and the signal is Δt less than or equal to 1/(f _dmax); when the speed direction is considered, in order to ensure that Doppler blurring does not occur, the requirement that θ= |2pi f _d delta T|is smaller than or equal to pi is met, namely the time domain resource interval relation between the maximum non-blurring Doppler frequency shift and the signal is delta T smaller than or equal to 1/(2|f _dmax |). Since the channel doppler is superimposed twice in the round-trip doppler measurement, the maximum doppler of the time domain resource format requirements of the first signal and the second signal needs to be multiplied by 2.

In this embodiment, since the time domain resource interval of the first signal is smaller than or equal to the second value, and since the time domain resource interval of the second signal is the same as the time domain resource interval of the first signal, the doppler ambiguity between the first signal and the second signal can be ensured, and the doppler measurement accuracy is further improved.

Optionally, at least one of the preset doppler resolution and the preset maximum blur free doppler shift is determined according to a perceived need.

Wherein the perceived need may be obtained by the first device.

In some embodiments, the above-mentioned perceived need information may include one of:

A perceived service may be classified by type or specific to a service, for example: environmental reconstruction, respiration or heartbeat detection, positioning or track tracking, action recognition, weather monitoring, radar ranging, radar speed measurement, radar angle measurement and the like;

a perception target area, wherein the perception target area may be a position area where a perception object may exist, or the perception target area is a position area where imaging is required, or the perception target area is a position area where environment reconstruction is required;

The sensing object types can be used for classifying the sensing objects according to possible motion characteristics of the sensing objects, and each sensing object type comprises information such as the motion speed, the motion acceleration, the typical radar cross section (Radar Cross Section, RCS) and the like of typical sensing objects;

Perceived quality of service (Quality of Service, qoS), which may be a performance indicator perceived by a perceived target area or perceived object, may include at least one of:

perceived resolution, perceived resolution can be further divided into: distance/delay resolution, angle resolution, velocity/doppler resolution, imaging resolution, etc.;

the perceived accuracy can be further divided into: distance/delay accuracy, angle accuracy, velocity/doppler accuracy, positioning accuracy, etc.;

the perception range can be further divided into: distance/delay range, velocity/doppler range, angle range, imaging range, etc.;

The sensing time delay can be a time interval from sending the sensing signal to obtaining the sensing result, or a time interval from initiating the sensing requirement to obtaining the sensing result;

the sensing update rate, which may be a time interval between two adjacent sensing operations and obtaining a sensing result;

The detection probability may be a probability of being correctly detected in the presence of a perception object;

false alarm probability, which may be the probability of falsely detecting a perceived target in the absence of a perceived object;

The maximum number of targets that can be perceived.

In this embodiment, since at least one of the preset doppler resolution and the preset maximum non-ambiguity doppler shift is determined according to the sensing requirement, the time domain resource length and the time domain resource interval of the first signal and the second signal can be made to correspond to the sensing requirement, so that the doppler measurement meets the sensing requirement, and further the performance of the doppler measurement is improved.

It should be noted that, in some embodiments, at least one of the above-mentioned preset doppler resolution and the preset maximum unambiguous doppler shift may also be agreed or configured on the network side.

Optionally, a total length (T _RTD) of time domain resources of the first signal and the second signal is less than or equal to a preset channel settling time; and/or the number of the groups of groups,

The transmission time interval between the second signal and the first signal is smaller than or equal to a preset time interval; and/or

The time domain starting position of the second signal is not later than a preset time position.

The preset channel settling time may be a time when the channel doppler is approximately constant.

The preset channel stabilization time, the preset time interval and the preset time position can be agreed by a protocol or configured by a network side.

Because the total length of the time domain resources of the first signal and the second signal is smaller than or equal to the preset channel stabilization time, the channel is relatively stable in the Doppler measurement process, and the Doppler measurement accuracy is further improved.

The transmission time interval between the second signal and the first signal may be a time interval between a time domain start position of the first signal and a time domain start position of the second signal.

Because the transmission time interval between the second signal and the first signal is smaller than or equal to the preset time interval, the total length of the time domain resources of the second signal and the first signal can be prevented from being too large, for example: the total length of the time domain resources of the first signal and the second signal is smaller than or equal to the preset channel stability time, so that the Doppler measurement accuracy is further improved.

Because the time domain starting position of the second signal is not later than the preset time position, the total length of the time domain resources of the second signal and the first signal can be prevented from being too large, for example: the total length of the time domain resources of the first signal and the second signal is smaller than or equal to the preset channel stability time, so that the Doppler measurement accuracy is further improved.

In some embodiments, the total length of the time domain resources of the first signal and the second signal, or the time domain starting position of the second signal, or the transmission time interval between the second signal and the first signal may be agreed, or may be transmitted by the first device to the second device.

As an alternative embodiment, the first operation includes at least one of:

Down-conversion and up-conversion;

Compensating baseband frequency offset;

And (5) frequency domain sampling.

The down-converting and up-converting may be performed by the second device down-converting the received signal and up-converting the down-converted signal, so that the up-converted second signal may be transmitted to the first device.

In one embodiment, the first signal s (t) sent by the first device is up-converted and expressed as:

wherein s (t) represents a first signal, f _t represents a first device carrier frequency, and t represents a time domain sampling point;

the first signal received by the second device after the down conversion is expressed as:

where H denotes, H denotes, b _h is an amplitude attenuation factor, s (t- τ _h) denotes a first signal delayed by τ _h, τ _h denotes a delay corresponding to an H-th reflector, f _D,h denotes Doppler shift information corresponding to an H-th reflector in a channel, f _r denotes a second device carrier frequency, Representing random phase rotation,/>Representing white gaussian noise;

The second device up-converts r (t) to obtain r1 (t), namely, a second signal is sent to the first device:

the first device receives r1 (t) and performs down-conversion to obtain:

Where s (t- (τ ' _h)) represents a first signal delayed by τ ' _h, and τ ' _h represents a sum of a delay corresponding to an h-th reflector in a process of transmitting the first signal to the second device by the first device and a delay corresponding to the h-th reflector in a process of transmitting the second signal to the first device by the second device.

The first device estimates Doppler information based on r2 (t).

It should be noted that the above multi-formulas are merely an example of down-conversion and up-conversion, and specific contents of the first signal and the second signal are not limited in the embodiment of the present application.

In this embodiment, the influence of the frequency deviation of the signal receiving and transmitting clock can be better eliminated by the down-conversion and up-conversion, and the accuracy of the Doppler measurement result can be further improved.

The baseband frequency offset compensation may be baseband frequency offset estimation and compensation, that is, baseband frequency offset compensation is performed based on baseband frequency offset estimation.

In this embodiment, since the baseband frequency offset compensation is performed on the first signal, when the clock offset problem of different devices at the transmitting end and the receiving end is avoided, the accuracy of the baseband frequency offset of the second signal can be further improved, and the accuracy of the doppler measurement result is further improved.

The frequency domain sampling may be signal extraction performed by the frequency domain, so as to reduce the second signal transmission overhead.

It should be noted that, in the embodiment of the present application, when the first operation includes any one or more of down-conversion, up-conversion, baseband frequency offset compensation, and frequency domain sampling, the problem that clock bias exists for different devices at the transmitting end and the receiving end can be avoided, because, in any first operation, the second signal is a signal obtained by performing the first operation on the first signal, the transmitting end and the receiving end of the signal for performing doppler measurement are the same device, and further the problem that clock bias exists for different devices at the transmitting end and the receiving end can be avoided, thereby achieving the effect of improving the accuracy of the doppler measurement result.

Optionally, the down-converting and up-converting includes:

down-converting based on a first frequency and up-converting based on a second frequency;

wherein the first frequency and the second frequency are the same or the first frequency and the second frequency are different.

Wherein, in case the first frequency and the second frequency are different, a difference of the first frequency and the second frequency is indicated by the second device to the first device. Therefore, the first equipment can know the difference value of the first frequency and the second frequency under the condition that the first frequency and the second frequency are different, and further Doppler measurement can be accurately carried out.

It should be noted that, in some embodiments, in the case that the first frequency and the second frequency are different, the difference between the first frequency and the second frequency may be a protocol convention or a network configuration.

As an alternative embodiment, before the first device receives the second signal sent by the second device, the method further includes:

The first device sends a request message to the second device, where the request message is used to request the second device to participate in doppler measurement.

Wherein the request message may be used to inform the second device to make round-trip doppler measurements. In addition, the request message may be referred to as a round-trip doppler measurement request.

In this embodiment, the round-trip doppler measurement based on the round-trip doppler measurement request may be implemented to avoid that the second device feeds back the second signal to the first device in a non-round-trip doppler measurement scenario.

It should be noted that, in some embodiments, the request message may not be sent, for example: the round trip Doppler measurement is pre-agreed to be performed under some special scenes or special services.

Optionally, before the first device receives the second signal sent by the second device, the method further includes:

The first device receives a response message sent by the second device, where the response message is used to instruct the second device to participate in doppler measurement, or the response message is used to instruct at least one of the following: the second equipment refuses to participate in Doppler measurement, and the second equipment refuses to participate in the reason of Doppler measurement;

and the first device receives the second signal sent by the second device under the condition that the response message indicates the second device to participate in Doppler measurement.

In addition, in the case that the response message is used to instruct the second device to refuse to participate in the doppler measurement, the first device may request the other device to participate in the doppler measurement, or end the doppler measurement; in the case where the response message indicates the reason why the second device refuses to participate in the doppler measurement, the first device may request the other device to participate in the doppler measurement, or end the doppler measurement, or adjust the configuration of the first signal based on the reason, and request the second device to participate in the doppler measurement again based on the adjusted configuration.

In this embodiment, round-trip Doppler measurements based on request and response messages may be implemented.

In some embodiments, the response message may indicate acceptance or rejection of participation in the round-trip Doppler measurement, and/or may indicate a reason for rejection of the round-trip Doppler measurement. For example: after receiving the request message, the second device sends the response message to the first device, which indicates that the second device accepts or refuses to participate in the round-trip Doppler measurement and/or indicates the reason for refusing the round-trip Doppler measurement. For example, the second device determines to accept or reject the request message according to at least one of its mobility information, location information, power information, and transmission resource information.

In some embodiments, the response message may not be sent, for example: in case the above request message is sent successfully, the second device accepts participation in the doppler measurement by default.

One embodiment, as shown in FIG. 4, includes the steps of:

The method comprises the steps that first equipment obtains sensing measurement demand information;

the first device sends a round-trip Doppler measurement request to the second device;

The second device sends a round trip Doppler measurement response to the first device;

the first device sends a first signal to the second device;

The second device sends a second signal to the first device;

the first device obtains a target Doppler calculation result, that is, a Doppler measurement result, based on the second signal.

As an alternative embodiment, at least one of the first configuration information of the first signal, the second configuration information of the second signal, and the first operation is pre-agreed;

or before the first device receives the second signal sent by the second device, the method further includes:

the first device sends configuration information to the second device, the configuration information including at least one of:

The first configuration information of the first signal, the second configuration information of the second signal and the time domain position relation configuration are configured, and the time domain position relation configuration is configured as the time domain position relation configuration of the first signal and the second signal.

The first configuration information may include at least one of the following corresponding to the first signal:

Signal configuration identification, waveform, subcarrier interval, guard interval, frequency domain starting position, frequency domain resource length, frequency domain resource interval, time domain starting position, time domain resource length, time domain resource interval, signal power, sequence information and signal direction;

the second configuration information may include at least one of the following corresponding to the second signal:

The time domain positional relationship configuration may include at least one of:

a time interval between a time domain start position of the first signal and a time domain start position of the second signal;

A time interval between a time domain end position of the first signal and a time domain start position of the second signal;

A time interval between a time domain end position of the first signal and a time domain end position of the second signal;

a time interval between a time domain start position of the first signal and a time domain end position of the second signal.

The signal configuration identifier is used for distinguishing different signal configurations, and the signal configuration of the first signal and the second signal can be determined through the signal configuration identifier.

The waveform may be OFDM, single-carrier frequency division multiple access (SC-FDMA), orthogonal time-frequency space (Orthogonal Time Frequency Space, OTFS), frequency modulated continuous wave (Frequency Modulated Continuous Wave, FMCW), or pulse signal;

the subcarrier spacing may be a subcarrier spacing of an OFDM system, for example: 30KHz.

The guard interval may be a time interval from a signal end transmission time to a time when a latest echo signal of the signal is received, the parameter being proportional to a maximum perceived distance; for example, it can be calculated by c/(2R _max), where R _max is the maximum perceived distance (belonging to the perceived-demand information), such as R _max represents the maximum distance from the perceived signal transmitting point to the signal receiving point for the perceived signal that is spontaneously received; in some cases, an OFDM signal Cyclic Prefix (CP) may function as a minimum guard interval, and c is the speed of light.

The frequency domain start position may be a start frequency point, or may be a Resource Element (RE) or a Resource Block (RB) index.

The frequency domain resource length can be frequency domain bandwidth, the frequency domain bandwidth is inversely proportional to the distance resolution, and the frequency domain bandwidth B of each signal is more than or equal to c/(2DeltaR), wherein c is the light speed, and DeltaR is the distance resolution.

The above-mentioned inverse ratio is the maximum ambiguity-free distance or maximum ambiguity-free delay, where the time-frequency domain interval is equal to the subcarrier interval when the subcarrier is continuously mapped for an OFDM system.

The time domain starting position may be a starting time point, or may be a starting symbol, a time slot, or a frame index.

The time domain resource length may be a burst (burst) duration, and the time domain resource length is inversely proportional to the doppler resolution (belonging to the perceived-demand information).

The time domain resource interval may be a time interval between two adjacent signals.

The signal power may be an interval power value, for example: a value is taken every 2dBm from-20 dBm to 23 dBm.

The above sequence information may generate sequence information, for example: ZC sequences or PN sequences, and may also include the manner of generation.

The signal direction may be angle information or beam information of the signal transmission.

In some embodiments, the time domain resource of the second signal transmission is associated with a channel settling time, that is, a time interval (T _RTD) between the first signal time domain start position and the second signal time domain end position is less than or equal to the channel settling time, for example: the relationship between the time domain resource position of the second signal and the time domain resource position of the first signal is shown in fig. 5.

Wherein T _offset1 represents a time interval between a time domain start position of the first signal and a time domain start position of the second signal, T _offset2 represents a time interval between a time domain end position of the first signal and a time domain start position of the second signal, T _offset3 represents a time interval between a time domain end position of the first signal and a time domain end position of the second signal, and T _RTD represents a time interval between a time domain start position of the first signal and a time domain end position of the second signal.

In some embodiments, the first signal and the second signal may be sent sequentially or alternatively in the time domain, as shown in fig. 6, where the relative time-domain positional relationship between the first signal and the second signal does not include T _offset2 and T _offset3.

In the above embodiment, the first signal and the second signal may be reliably transmitted between the first device and the second device by the first configuration information of the first signal and the second configuration information of the second signal.

The first device sends first indication information to the second device, wherein the first indication information is used for indicating the second device to perform the first operation on the received first signal.

The first instruction information may instruct specific content of the first operation, or may instruct to permit or prohibit the operation performed by the second device.

In some embodiments, the first indication information includes at least one of:

Crystal oscillator frequency adjustment indication, frequency offset compensation indication, frequency domain extraction indication, signal configuration identification of the first signal and threshold indication;

The crystal oscillator frequency adjustment instruction is used for prohibiting the second equipment from performing crystal oscillator frequency adjustment on the received first signal; the crystal oscillator frequency adjustment instruction is used for allowing the second device to perform crystal oscillator frequency adjustment on the received first signal, or the crystal oscillator frequency adjustment instruction is used for instructing the second device to instruct the first device to indicate a difference value between a first frequency and a second frequency, wherein the first frequency is a frequency at which the second device performs down-conversion on the first signal, and the second frequency is a frequency at which the second device performs up-conversion on the first signal;

The frequency offset compensation instruction is used for prohibiting the second equipment from performing baseband frequency offset compensation on the received first signal; the frequency offset compensation indication is used for allowing the second equipment to perform baseband frequency offset compensation on the received first signal, or the frequency offset compensation indication is used for indicating the second equipment to indicate a baseband frequency offset compensation value to the first equipment;

the frequency domain extraction instruction is used for a frequency domain extraction rule;

The threshold indication is used to indicate a performance indicator threshold.

The crystal oscillator frequency adjustment instruction is configured to prohibit the second device from performing crystal oscillator frequency adjustment on the received first signal, where the first frequency and the second frequency are the same when the second device down-converts the first signal based on the first frequency and up-converts the second signal based on the second frequency.

The crystal oscillator frequency adjustment instruction may be configured to allow the second device to perform crystal oscillator frequency adjustment on the received first signal, where the second device down-converts the first signal based on a first frequency and up-converts the second signal based on a second frequency, where the first frequency and the second frequency may be different, for example: the second device reports the frequency difference value to the first device, or performs frequency conversion operation based on the preset frequency difference value.

The above frequency offset compensation indication is used for allowing the second device to perform baseband frequency offset compensation on the received first signal, and may be that, when the second device performs baseband frequency offset compensation on the first signal, the second device notifies the first device of a frequency offset compensation value, or performs frequency offset compensation based on a preset agreed frequency offset compensation value.

The frequency domain extraction rule may be an RB extraction rule, for example: the first signal contains 273 RBs, 20 of which are selected.

The frequency domain extraction rule may be a frequency domain resource index that directly indicates extraction, or may be a frequency domain sampling interval that needs to be satisfied by the extracted second signal.

In the above embodiment, the second device may perform the first operation based on the instruction of the first device, thereby reducing the complexity of the doppler measurement.

In some embodiments, the first indication information may further include at least one of configuration information of the first signal and configuration information of the second signal, for example: a signal configuration identification comprising at least one of the first signal and the second signal.

As an alternative embodiment, after the first device sends the first signal to the second device, the method further comprises at least one of:

the first equipment receives performance index information sent by the second equipment, wherein the performance index information is obtained by measuring the first signal;

The first device receives second indication information sent by the second device, wherein the second indication information is used for indicating at least one of the following:

And performing configuration adjustment on the first signal, wherein round-trip Doppler measurement fails.

Wherein, the performance index information may include at least one of the following:

Signal strength information, signal to interference and noise ratio (Signal to Interference plus Noise Ratio, SINR) information, signal to noise ratio (Signal to Noise Ratio, SNR) information, perceptual SNR information, perceptual SINR information.

The SINR information refers to SINR information in a non-perceptual dimension, and the SNR information refers to SNR information in the non-perceptual dimension.

The perceived SNR may be a ratio of a signal component power of the perceived first signal to a noise power, and the perceived SINR may be a ratio of a signal component power of the perceived first signal to a sum of powers of noise and interference.

Taking radar detection as an example, the method for acquiring the perceived first signal power may be at least one of the following options:

Firstly, constant FALSE ALARM RATE Detector (CFAR) is carried out on the basis of a time delay one-dimensional diagram obtained by fast time-dimensional FFT processing of the echo signal, and the power of the echo signal is calculated by taking the maximum sample point of the amplitude of the CFAR threshold as a target sample point and taking the amplitude of the maximum sample point as the amplitude of the target signal, as shown in figure 7;

performing CFAR on the Doppler one-dimensional graph obtained based on the echo signal slow time dimension FFT processing, and calculating echo signal power by taking the maximum sample point of the amplitude of the CFAR passing threshold as a target sample point and taking the amplitude of the maximum sample point as the target signal amplitude, as shown in figure 7;

Thirdly, performing CFAR (computational fluid dynamics) based on a delay-Doppler two-dimensional graph obtained by 2D-FFT (fast Fourier transform) processing of the echo signal, and calculating the power of the echo signal by taking a maximum sample point with the amplitude of the CFAR passing through a threshold as a target sample point and taking the amplitude of the maximum sample point as the amplitude of a target signal;

Performing CFAR based on a delay-Doppler-angle three-dimensional graph obtained by 3D-FFT processing of the echo signals, and calculating echo signal power by taking a maximum sample point with the amplitude of CFAR passing a threshold as a target sample point and taking the amplitude of the maximum sample point as a target signal amplitude;

besides the above method for determining the signal amplitude, the maximum amplitude sample point of the CFAR threshold is taken as the target sample point, and the average value of the maximum amplitude sample point of the CFAR threshold and the nearest several threshold sample points is taken as the target signal amplitude to calculate the echo signal power.

The method for acquiring the SNR/SINR of the echo signal may be at least one of the following options:

In the first mode, CFAR is carried out based on a time delay one-dimensional graph obtained by fast time dimension FFT processing of echo signals, the maximum sample point of the amplitude of CFAR passing through a threshold is taken as a target sample point, the amplitude of the CFAR is taken as the amplitude of a target signal, taking all sample points except + -epsilon sample points from the target sample point position in the one-dimensional graph as interference/noise sample points, and counting the average interference/amplitude as interference/noise signal amplitude, as shown in fig. 7, and finally calculating SNR/SINR by the target signal amplitude and the interference/noise signal amplitude, wherein epsilon is a constant;

Performing CFAR on a Doppler one-dimensional graph obtained based on echo signal slow time dimension FFT processing, taking the maximum sample point of the CFAR threshold amplitude as a target sample point, taking the amplitude of the maximum sample point as a target signal amplitude, taking all sample points except for +/-eta sample points from the target sample point position in the one-dimensional graph as interference/noise sample points, counting the average amplitude of the sample points as interference/noise signal amplitude, and finally calculating SNR/SINR (noise-to-noise ratio) by taking the target signal amplitude and the interference/noise signal amplitude as constants;

Taking the maximum sample point of the amplitude of the CFAR threshold as a target sample point, taking the amplitude of the CFAR threshold as a target signal amplitude, taking all sample points except for + -epsilon (fast time dimension) and + -eta (slow time dimension) sample points of the target sample point in the two-dimensional map as interference/noise sample points, counting the average amplitude of the sample points as interference/noise signal amplitude, and finally calculating SNR/SINR (signal to noise/noise signal amplitude) by taking the target signal amplitude and the interference/noise signal amplitude;

Performing CFAR on a delay-Doppler-angle three-dimensional graph obtained based on echo signal 3D-FFT processing, taking the maximum sample point of the CFAR threshold amplitude as a target sample point, taking the amplitude as a target signal amplitude, taking all sample points except for + -epsilon (fast time dimension), + -eta (slow time dimension) and + -delta (angle dimension) sample points of the target sample point in the three-dimensional graph as interference/noise sample points, counting the average amplitude as interference/noise signal amplitude, and finally calculating SNR/SINR (signal to noise plus noise) by taking the target signal amplitude and the interference/noise signal amplitude as constants;

In the fifth mode, the method for determining the target signal amplitude may use the maximum amplitude sample point of the CFAR threshold and the average value of the nearest several threshold sample points as the target signal amplitude, in addition to the above method using the maximum amplitude sample point of the CFAR threshold as the target sample point.

In addition, the method for determining the interference/noise sample points may further comprise screening according to the determined interference/noise sample points, where the screening method is as follows: for the time delay one-dimensional graph, removing a plurality of sample points with time delay being near 0, and taking the rest interference/noise sample points as noise sample points; or for Doppler one-dimensional graph, removing a plurality of sample points near Doppler 0, and taking the rest interference/noise sample points as interference/noise sample points; or for the delay-Doppler two-dimensional graph, removing the interference/noise sample points of a strip range formed by a plurality of points around the delay 0 and the whole Doppler range, and taking the rest noise sample points as the interference/noise sample points; or for a delay-doppler-angle three-dimensional plot, removing the interference/noise sample points of the slice-like range consisting of a plurality of points, all doppler ranges and all angle ranges, and taking the rest of the interference/noise sample points as the interference/noise sample points.

The second indication information may be transmitted based on the second device based on the performance index information, for example: and if the performance index information does not reach the expected value, sending the second indicating information to indicate that the configuration adjustment is carried out on the first signal or that the round-trip Doppler measurement fails.

For example: and the second equipment judges according to a preset threshold, and when the performance index information does not meet the threshold requirement, the second equipment sends a round-trip Doppler measurement failure indication and/or a first signal adjustment indication to the first equipment to inform the first equipment of the round-trip Doppler measurement failure based on the current first signal, wherein the threshold can be agreed or informed by the first equipment.

The second indication information may be a round trip doppler measurement failure indication or a first signal adjustment indication as shown in fig. 4.

It should be noted that, in some embodiments, the first device may determine whether to adjust the first signal based on the performance index information, or determine whether the round trip doppler measurement fails, that is, the second device may not send the second index information to the first device.

Optionally, the method further comprises:

And under the condition that the performance index information does not meet a preset threshold condition, the first device sends third indication information to the second device, wherein the third indication information is used for indicating at least one of the following:

In this embodiment, a) the second device may send performance index information to the first device, and the first device may determine to perform the first signal configuration adjustment or determine that the round-trip doppler measurement fails according to the performance index information. In addition, in this embodiment, a failure indication may also be fed back to the perceived-demand initiator.

The foregoing configuration adjustment of the first signal may be that the first device performs parameter adjustment of the first signal, for example: and increasing the first signal transmitting power or the time-frequency domain density, and carrying out round-trip Doppler measurement again, or judging that the measurement fails, and feeding back a failure indication to a perception demand initiator.

In some embodiments, the configuration adjustment of the first signal may also be referred to as a second operation.

As an alternative embodiment, the method further comprises:

The first device obtains a perception measurement result based on the Doppler measurement result.

The Doppler measurement result is the measurement result obtained in step 303.

In this embodiment, after the first device obtains the doppler measurement result, a sensing result is obtained based on the doppler measurement result, where the sensing result may be a sensing result corresponding to a sensing service using doppler as a basic measurement quantity, for example: including but not limited to at least one of:

motion speed, direction of motion, whether or not a target is present or the number of targets, motion trajectories, actions, gestures, vital signs (respiration, heartbeat, etc.).

In some embodiments, after the first device obtains the doppler measurement result, the result may be sent to the third device, where the third device obtains the sensing result based on the doppler measurement result. Wherein the third device may be a network-aware Function, a network-aware element or a management-aware Function (SENSING MANAGEMENT Function, SENSING MF).

In the embodiment of the present application, the network function, the network element or the management function may be located at the RAN side or the core network side, which refers to a network node in the core network and/or the RAN side that is responsible for at least one function such as sensing request processing, sensing resource scheduling, sensing information interaction, sensing data processing, etc., and may be based on AMF or LMF upgrade in the 5G network, or may be other network nodes or newly defined network nodes, and specifically, the functional characteristics of the network function, the network element or the management function may include at least one of the following:

Performing target information interaction with a wireless signal transmitting device and/or a wireless signal measuring device (including a target terminal or a serving base station of the target terminal or a base station associated with a target area), wherein the target information includes a sensing processing request, sensing capability, sensing auxiliary data, a sensing measurement quantity type, sensing resource configuration information and the like, so as to obtain a value of a target sensing result or sensing measurement quantity (uplink measurement quantity or downlink measurement quantity) transmitted by the wireless signal measuring device; wherein the wireless signal may also be referred to as a sense signal.

The sensing method is determined according to the type of the sensing service, the consumer information of the sensing service, the required sensing QoS requirement information, the sensing capability of the wireless signal transmitting device, the sensing capability of the wireless signal measuring device and the like, and can comprise any sensing method shown in fig. 2.

And determining a sensing device serving the sensing service according to the type of the sensing service, the information of the consumer of the sensing service, the required sensing QoS requirement information, the sensing capability of the wireless signal transmitting device, the sensing capability of the wireless signal measuring device and the like, wherein the sensing device comprises the wireless signal transmitting device and/or the wireless signal measuring device.

Managing the overall coordination and scheduling of resources required by the perceived service, such as corresponding configuration of perceived resources of a base station and/or a terminal;

And carrying out data processing on the value of the perception measurement quantity or calculating to obtain a perception result. Further, verifying the perceived result, estimating the perceived accuracy, and the like.

In the embodiment of the application, the first equipment sends the first signal, the second equipment feeds back the received signal to the first equipment, the first equipment carries out Doppler measurement, namely, after the second equipment feeds back the received signal to the first equipment, the influence of the frequency deviation of the receiving and transmitting clock in the signal is counteracted, at the moment, the first equipment carries out Doppler measurement without being influenced by the frequency deviation of the receiving and transmitting clock, and can measure and obtain original channel Doppler information, thus being applicable to sensing service taking Doppler as basic measurement quantity.

Referring to fig. 8, fig. 8 is a flowchart of another doppler measurement method according to an embodiment of the present application, as shown in fig. 8, including the following steps:

step 801, a second device receives a first signal sent by a first device;

Step 802, the second device executes a second signal obtained by a first operation on the first signal;

step 803, the second device sends the second signal to the first device.

Optionally, the time domain resource formats of the first signal and the second signal are the same.

Optionally, the time domain resource formats are the same and include at least one of the following:

Optionally, the time domain resource lengths of the first signal and the second signal are associated with a preset doppler resolution; and/or the number of the groups of groups,

The time domain resource interval of the first signal is associated with a preset maximum non-fuzzy Doppler frequency shift, and the time domain resource interval of the second signal is associated with the preset maximum non-fuzzy Doppler frequency shift.

Optionally, the time domain resource lengths of the first signal and the second signal are greater than or equal to a first value, where the first value is a value obtained by dividing 1 by the preset doppler resolution;

The time domain resource interval of the first signal is smaller than or equal to a second value, and the time domain resource interval of the second signal is smaller than or equal to the second value; the second value is a value obtained by dividing 1 by a third value, the third value is equal to 2 times of the preset maximum non-fuzzy Doppler frequency shift, or the third value is 4 times of a fourth value, and the fourth value is an absolute value of a product of the preset maximum non-fuzzy Doppler frequency shift.

Optionally, the total length of the time domain resources of the first signal and the second signal is smaller than or equal to a preset channel stability time; and/or the number of the groups of groups,

Optionally, the first operation includes at least one of:

Down-conversion and up-conversion;

Compensating baseband frequency offset;

And (5) frequency domain sampling.

Optionally, the down-converting and up-converting includes:

Optionally, in the case that the first frequency and the second frequency are different, a difference between the first frequency and the second frequency is indicated to the first device by the second device.

Optionally, before the second device sends the second signal, the method further includes:

and the second equipment receives a request message sent by the first equipment, wherein the request message is used for requesting the second equipment to participate in Doppler measurement.

The second device sends a response message to the first device, where the response message is used to instruct the second device to participate in doppler measurement, or the response message is used to instruct at least one of: the second equipment refuses to participate in Doppler measurement, and the second equipment refuses to participate in the reason of Doppler measurement;

And the second device sends the second signal to the first device under the condition that the response message indicates that the second device participates in Doppler measurement.

Optionally, at least one of the first configuration information of the first signal, the second configuration information of the second signal, and the first operation is pre-agreed;

Or before the second device transmits the second signal by the first device, the method further includes:

the second device receives configuration information sent by the first device, wherein the configuration information comprises at least one of the following items:

Optionally, the first configuration information includes at least one of the following corresponding to the first signal:

the second configuration information includes at least one of the following corresponding to the second signal:

The time domain positional relationship configuration includes at least one of:

The second device receives first indication information sent by the first device, where the first indication information is used to indicate the second device to perform the first operation on the received first signal.

Optionally, the first indication information includes at least one of:

The threshold indication is used to indicate a performance indicator threshold.

Optionally, before and after the second device sends the second signal, the method further includes at least one of:

The second device sends performance index information to the first device, wherein the performance index information is obtained by measuring the first signal;

The second device sends second indication information to the second device, wherein the second indication information is used for indicating at least one of the following:

Optionally, the performance index information includes at least one of:

Signal strength information, signal to interference and noise ratio SINR information, SNR information, perceived SINR information.

Optionally, the method further comprises:

and under the condition that the performance index information does not meet a preset threshold condition, the second device receives third indication information sent by the first device, wherein the third indication information is used for indicating at least one of the following:

It should be noted that, as an implementation manner of the second device corresponding to the embodiment shown in fig. 3, a specific implementation manner of the second device may refer to a description related to the embodiment shown in fig. 3, so that in order to avoid repetitive description, the description of this embodiment is omitted.

Referring to fig. 9, fig. 9 is a block diagram of a doppler measurement device according to an embodiment of the present application, and as shown in fig. 9, a doppler measurement device 900 includes:

A first transmitting module 901, configured to transmit a first signal to a second device;

A first receiving module 902, configured to receive a second signal sent by the second device, where the second signal is a signal obtained by the second device performing a first operation on the first signal;

A measurement module 903, configured to perform doppler measurement based on the second signal.

Optionally, the first operation includes at least one of:

Down-conversion and up-conversion;

Compensating baseband frequency offset;

And (5) frequency domain sampling.

Optionally, the down-converting and up-converting includes:

Optionally, the apparatus further includes:

And the second sending module is used for sending a request message to the second equipment, wherein the request message is used for requesting the second equipment to participate in Doppler measurement.

Optionally, the apparatus further includes:

The second receiving module is configured to receive a response message sent by the second device, where the response message is used to instruct the second device to participate in doppler measurement, or the response message is used to instruct at least one of the following: the second equipment refuses to participate in Doppler measurement, and the second equipment refuses to participate in the reason of Doppler measurement;

And the first receiving module receives the second signal sent by the second device under the condition that the response message indicates that the second device participates in Doppler measurement.

Or the device further comprises:

a third sending module, configured to send configuration information to the second device, where the configuration information includes at least one of:

The time domain positional relationship configuration includes at least one of:

Optionally, the apparatus further includes:

And the fourth sending module is used for sending first indication information to the second equipment, wherein the first indication information is used for indicating the second equipment to perform the first operation on the received first signal.

Optionally, the first indication information includes at least one of:

The threshold indication is used to indicate a performance indicator threshold.

Optionally, the apparatus further comprises at least one of:

The third receiving module is used for receiving performance index information sent by the second equipment, wherein the performance index information is obtained by measuring the first signal;

the fourth receiving module is used for receiving second indication information sent by the second device, and the second indication information is used for indicating at least one of the following:

Optionally, the performance index information includes at least one of:

Signal strength information, signal to interference and noise ratio SINR information, signal to noise ratio SNR information, perceptual SINR information.

Optionally, the apparatus further includes:

a fifth sending module, configured to send third indication information to the second device when the performance index information does not meet a preset threshold condition, where the third indication information is used to indicate at least one of the following:

Optionally, the apparatus further includes:

and the acquisition module is used for acquiring a perception measurement result based on the Doppler measurement result.

Optionally, the first signal is an uplink signal, and the second signal is a downlink signal; or alternatively

The first signal is a downlink signal, and the second signal is an uplink signal.

Optionally, the first signal includes at least one of:

The Doppler measurement device can improve the Doppler measurement accuracy.

The Doppler measurement device in the embodiment of the application can be an electronic device, such as an electronic device with an operating system, or can be a component in the electronic device, such as an integrated circuit or a chip. For example: the electronic device may be a terminal, or may be other devices than a terminal. By way of example, the terminals may include, but are not limited to, the types of terminals listed in the embodiments of the present application, and the other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and the embodiments of the present application are not limited in detail.

The Doppler measurement device provided by the embodiment of the application can realize each process realized by the method embodiment shown in fig. 3 and achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

Referring to fig. 10, fig. 10 is a block diagram of a doppler measurement device according to an embodiment of the present application, and as shown in fig. 10, a doppler measurement device 1000 includes:

A first receiving module 1001, configured to receive a first signal sent by a first device;

an execution module 1002, configured to execute a second signal obtained by a first operation on the first signal;

A first transmitting module 1003, configured to transmit the second signal to the first device.

Optionally, the first operation includes at least one of:

Down-conversion and up-conversion;

Compensating baseband frequency offset;

And (5) frequency domain sampling.

Optionally, the down-converting and up-converting includes:

Optionally, the apparatus further includes:

And the second receiving module is used for receiving a request message sent by the first equipment, wherein the request message is used for requesting the second equipment to participate in Doppler measurement.

Optionally, the apparatus further includes:

A second sending module, configured to send a response message to the first device, where the response message is used to instruct the second device to participate in doppler measurement, or the response message is used to instruct at least one of: the second equipment refuses to participate in Doppler measurement, and the second equipment refuses to participate in the reason of Doppler measurement;

the first sending module sends the second signal to the first device under the condition that the response message indicates that the second device participates in Doppler measurement.

or before the second device sends the second signal, the apparatus further includes:

The third receiving module is configured to receive configuration information sent by the first device, where the configuration information includes at least one of the following:

The time domain positional relationship configuration includes at least one of:

Optionally, the apparatus further includes:

The fourth receiving module is used for receiving first indication information sent by the first device, and the first indication information is used for indicating the second device to perform the first operation on the received first signal.

Optionally, the first indication information includes at least one of:

The threshold indication is used to indicate a performance indicator threshold.

Optionally, the apparatus further comprises at least one of:

the second sending module is used for sending performance index information to the first equipment, wherein the performance index information is obtained by measuring the first signal;

The third sending module is used for sending second indicating information to the second equipment, and the second indicating information is used for indicating at least one of the following items:

Optionally, the performance index information includes at least one of:

Optionally, the apparatus further includes:

A fifth receiving module, configured to, when the performance index information does not meet a preset threshold condition, receive, by the second device, third indication information sent by the first device, where the third indication information is used to indicate at least one of:

The Doppler measurement device can improve the Doppler measurement accuracy.

The Doppler measurement device in the embodiment of the application can be an electronic device, such as an electronic device with an operating system, or can be a component in the electronic device, such as an integrated circuit or a chip. The electronic device may be a terminal or a network side device.

The Doppler measurement device provided by the embodiment of the application can realize each process realized by the method embodiment shown in fig. 8 and achieve the same technical effect, and in order to avoid repetition, the description is omitted here.

Optionally, as shown in fig. 11, the embodiment of the present application further provides a communication device 1100, including a processor 1101 and a memory 1102, where the memory 1102 stores a program or instructions that can be executed on the processor 1101, for example, when the communication device 1100 is a first device, the program or instructions implement, when executed by the processor 1101, the steps of the embodiment of the doppler measurement method on the first device side, and achieve the same technical effects. When the communication device 1100 is a second device, the program or the instruction, when executed by the processor 1101, implements the steps of the embodiment of the doppler measurement method on the second device side, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides communication equipment, which comprises a processor and a communication interface, wherein the communication interface is used for sending a first signal to second equipment; receiving a second signal sent by the second device, wherein the second signal is a signal obtained by the second device executing a first operation on the first signal; the processor or communication interface is for making doppler measurements based on the second signal. The communication device embodiment corresponds to the first device-side doppler measurement method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the communication device embodiment, and the same technical effects can be achieved.

Specifically, fig. 12 is a schematic hardware structure of a communication device implementing an embodiment of the present application.

The communication device 1200 includes, but is not limited to: at least some of the components of the radio frequency unit 1201, the network module 1202, the audio output unit 1203, the input unit 1204, the sensor 1205, the display unit 1206, the user input unit 1207, the interface unit 1208, the memory 1209, and the processor 1210.

Those skilled in the art will appreciate that the communication device 1200 may also include a power source (e.g., a battery) for powering the various components, which may be logically connected to the processor 1210 by a power management system, such as to perform functions such as managing charging, discharging, and power consumption by the power management system. The communication device structure shown in fig. 12 does not constitute a limitation of the communication device, and the communication device may include more or less components than shown, or may combine certain components, or may be arranged in different components, which are not described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1204 may include a graphics processing unit (Graphics Processing Unit, GPU) 12041 and a microphone 12042, the graphics processing unit 12041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1206 may include a display panel 12061, and the display panel 12061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1207 includes at least one of a touch panel 12071 and other input devices 12072. The touch panel 12071 is also called a touch screen. The touch panel 12071 may include two parts, a touch detection device and a touch controller. Other input devices 12072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1201 may transmit the downlink data to the processor 1210 for processing; in addition, the radio frequency unit 1201 may send uplink data to the network side device. Typically, the radio frequency unit 1201 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1209 may be used to store software programs or instructions as well as various data. The memory 1209 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1209 may include volatile memory or nonvolatile memory, or the memory 1209 may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an erasable programmable ROM (ErasablePROM, EPROM), an electrically erasable programmable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (Random Access Memory, RAM), static random access memory (STATIC RAM, SRAM), dynamic random access memory (DYNAMIC RAM, DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double DATA RATE SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (ENHANCED SDRAM, ESDRAM), synchronous link dynamic random access memory (SYNCH LINK DRAM, SLDRAM), and direct random access memory (DRRAM). Memory 1209 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 1210 may include one or more processing units; optionally, processor 1210 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 1210.

In this embodiment, the communication device is a first device, and the first device is taken as a terminal to exemplify:

A radio frequency unit 1201 for transmitting a first signal to a second device; receiving a second signal sent by the second device, wherein the second signal is a signal obtained by the second device executing a first operation on the first signal;

A radio frequency unit 1201 or a processor 1210 for performing doppler measurement based on the second signal.

Optionally, the first operation includes at least one of:

Down-conversion and up-conversion;

Compensating baseband frequency offset;

And (5) frequency domain sampling.

Optionally, the down-converting and up-converting includes:

Optionally, before the first device receives the second signal sent by the second device, the radio frequency unit 1201 is further configured to:

And sending a request message to the second device, wherein the request message is used for requesting the second device to participate in Doppler measurement.

receiving a response message sent by the second device, where the response message is used to instruct the second device to participate in doppler measurement, or the response message is used to instruct at least one of the following: the second equipment refuses to participate in Doppler measurement, and the second equipment refuses to participate in the reason of Doppler measurement;

The radio frequency unit 1201 receives the second signal sent by the second device when the response message indicates that the second device participates in doppler measurement.

Or before the first device receives the second signal sent by the second device, the radio frequency unit 1201 is further configured to:

Transmitting configuration information to the second device, the configuration information including at least one of:

The time domain positional relationship configuration includes at least one of:

and sending first indication information to the second device, wherein the first indication information is used for indicating the second device to perform the first operation on the received first signal.

Optionally, the first indication information includes at least one of:

The threshold indication is used to indicate a performance indicator threshold.

Optionally, after the first device sends the first signal to the second device, the radio frequency unit 1201 is further configured to at least one of:

receiving performance index information sent by the second equipment, wherein the performance index information is obtained by measuring the first signal;

Receiving second indication information sent by the second device, wherein the second indication information is used for indicating at least one of the following:

Optionally, the performance index information includes at least one of:

Optionally, the radio frequency unit 1201 is further configured to:

And sending third indication information to the second device under the condition that the performance index information does not meet a preset threshold condition, wherein the third indication information is used for indicating at least one of the following:

Optionally, the radio frequency unit 1201 or the processor 1210 is further configured to:

Based on the Doppler measurements, a perception measurement is obtained.

Optionally, the first signal includes at least one of:

The communication device can improve Doppler measurement accuracy.

The embodiment of the application also provides communication equipment, which comprises a processor and a communication interface, wherein the communication interface is used for receiving a first signal sent by the first equipment; the communication interface or the processor is used for executing a second signal obtained by a first operation on the first signal; the communication interface is also configured to send the second signal to the first device. The communication device embodiment corresponds to the second device-side doppler measurement method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the communication device embodiment, and the same technical effects can be achieved.

The embodiment of the application also provides communication equipment. As shown in fig. 13, the communication apparatus 1300 includes: an antenna 1301, a radio frequency device 1302, a baseband device 1303, a processor 1304, and a memory 1305. The antenna 1301 is connected to a radio frequency device 1302. In the uplink direction, the radio frequency device 1302 receives information via the antenna 1301, and transmits the received information to the baseband device 1303 for processing. In the downlink direction, the baseband device 1303 processes information to be transmitted, and transmits the processed information to the radio frequency device 1302, and the radio frequency device 1302 processes the received information and transmits the processed information through the antenna 1301.

The method performed by the communication device in the above embodiment may be implemented in a baseband apparatus 1303, where the baseband apparatus 1303 includes a baseband processor.

The baseband apparatus 1303 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 13, where one chip, for example, a baseband processor, is connected to the memory 1305 through a bus interface, so as to call a program in the memory 1305 to perform the network device operation shown in the above method embodiment.

The communication device may also include a network interface 1306, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the communication apparatus 1300 of the embodiment of the present invention further includes: instructions or programs stored in the memory 1305 and executable on the processor 1304, the processor 1304 invokes the instructions or programs in the memory 1305 to perform the methods performed by the modules shown in fig. 10 and achieve the same technical effects, and are not repeated here.

In this embodiment, the communication device is a second device, and the second device is a radio access network device for illustration.

The radio frequency device 1302 is configured to receive a first signal sent by a first device;

A radio frequency device 1302 or a processor 1304 for performing a first operation on the first signal to obtain a second signal;

The radio frequency device 1302 is further configured to transmit the second signal to the first apparatus.

Optionally, the first operation includes at least one of:

Down-conversion and up-conversion;

Compensating baseband frequency offset;

And (5) frequency domain sampling.

Optionally, the down-converting and up-converting includes:

Optionally, before the second device sends the second signal, the radio frequency apparatus 1302 is further configured to:

and receiving a request message sent by the first equipment, wherein the request message is used for requesting the second equipment to participate in Doppler measurement.

Transmitting a response message to the first device, wherein the response message is used for indicating the second device to participate in Doppler measurement, or the response message is used for indicating at least one of the following: the second equipment refuses to participate in Doppler measurement, and the second equipment refuses to participate in the reason of Doppler measurement;

wherein the radio frequency device 1302 sends the second signal to the first device if the response message indicates that the second device is involved in doppler measurement.

or the second device and the first device send the second signal, the radio frequency device 1302 is further configured to:

The time domain positional relationship configuration includes at least one of:

Optionally, the first indication information includes at least one of:

The threshold indication is used to indicate a performance indicator threshold.

Optionally, before and after the second device sends the second signal, the radio frequency device 1302 is further configured to at least one of:

transmitting performance index information to the first device, wherein the performance index information is obtained by measuring the first signal;

Transmitting second indication information to the second device, wherein the second indication information is used for indicating at least one of the following:

Optionally, the performance index information includes at least one of:

Optionally, the radio frequency device 1302 is further configured to:

And receiving third indication information sent by the first device under the condition that the performance index information does not meet a preset threshold condition, wherein the third indication information is used for indicating at least one of the following:

The communication device can improve Doppler measurement accuracy.

The embodiment of the application also provides a readable storage medium, and the readable storage medium stores a program or instructions, which when executed by a processor, implement the steps of the Doppler measurement method provided by the embodiment of the application.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, which comprises a processor and a communication interface, wherein the communication interface is coupled with the processor, and the processor is used for running programs or instructions to realize the processes of the Doppler measurement method embodiment, and can achieve the same technical effects, so that repetition is avoided, and the description is omitted here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiment of the present application further provides a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above-mentioned doppler measurement method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and details are not repeated here.

The embodiment of the application also provides an information transmission system, which comprises: the first device may be configured to perform the steps of the method for measuring doppler on the first device side provided by the embodiment of the present application, and the second device may be configured to perform the steps of the method for measuring doppler on the second device side provided by the embodiment of the present application.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method according to the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.

Claims

1. A method of doppler measurement comprising:

the first device sends a first signal to the second device;

the first device performs Doppler measurements based on the second signal.

2. The method of claim 1, wherein the time domain resource formats of the first signal and the second signal are the same.

3. The method of claim 2, wherein the time domain resource formats are the same comprising at least one of:

4. The method of claim 3, wherein a time domain resource length of the first signal and the second signal is associated with a preset doppler resolution; and/or the number of the groups of groups,

5. The method of claim 4, wherein a time domain resource length of the first signal and the second signal is greater than or equal to a first value, the first value being 1 divided by the value of the preset doppler resolution;

6. The method of claim 4, wherein at least one of the preset doppler resolution and the preset maximum blur free doppler shift is determined based on perceived need.

7. The method of claim 4, wherein a total length of time domain resources of the first signal and the second signal is less than or equal to a preset channel settling time; and/or the number of the groups of groups,

8. The method of any of claims 1 to 7, wherein the first operation comprises at least one of:

Down-conversion and up-conversion;

Compensating baseband frequency offset;

And (5) frequency domain sampling.

9. The method of claim 8, wherein the down-converting and up-converting comprises:

10. The method of claim 9, wherein a difference of the first frequency and the second frequency is indicated by the second device to the first device if the first frequency and the second frequency are different.

11. The method of any of claims 1-7, wherein prior to the first device receiving the second signal transmitted by the second device, the method further comprises:

12. The method of claim 11, wherein prior to the first device receiving the second signal transmitted by the second device, the method further comprises:

13. The method of any of claims 1 to 7, wherein at least one of the first configuration information of the first signal, the second configuration information of the second signal, the first operation is pre-agreed;

14. The method of claim 13, wherein the first configuration information comprises at least one of the following for the first signal:

The time domain positional relationship configuration includes at least one of:

15. The method of any of claims 1-7, wherein prior to the first device receiving the second signal transmitted by the second device, the method further comprises:

16. The method of claim 15, wherein the first indication information comprises at least one of:

The threshold indication is used to indicate a performance indicator threshold.

17. The method of any of claims 1-7, wherein after the first device transmits the first signal to the second device, the method further comprises at least one of:

18. The method of claim 17, wherein the performance index information comprises at least one of:

19. The method of claim 17, wherein the method further comprises:

20. The method of any one of claims 1 to 7, wherein the method further comprises:

21. The method according to any one of claims 1 to 7, wherein the first signal is an uplink signal and the second signal is a downlink signal; or alternatively

22. The method of any one of claims 1 to 7, wherein the first signal comprises at least one of:

23. A method of doppler measurement comprising:

the second device receives a first signal sent by the first device;

the second device transmits the second signal to the first device.

24. The method of claim 23, wherein the first operation comprises at least one of:

Down-conversion and up-conversion;

Compensating baseband frequency offset;

And (5) frequency domain sampling.

25. The method of claim 24, wherein the down-converting and up-converting comprises:

26. The method of claim 25, wherein a difference between the first frequency and the second frequency is indicated by the second device to the first device if the first frequency and the second frequency are different.

27. The method of any of claims 23 to 26, wherein prior to the second device transmitting the second signal by the first device, the method further comprises:

28. The method of claim 27, wherein the second device before the first device transmits the second signal, the method further comprises:

29. The method of any of claims 23 to 26, wherein at least one of the first configuration information of the first signal, the second configuration information of the second signal, the first operation is pre-agreed;

30. The method of claim 29, wherein the first configuration information comprises at least one of the following for the first signal:

The time domain positional relationship configuration includes at least one of:

31. The method of any of claims 23 to 26, wherein prior to the second device transmitting the second signal by the first device, the method further comprises:

32. The method of claim 31, wherein the first indication information comprises at least one of:

The threshold indication is used to indicate a performance indicator threshold.

33. The method of any of claims 23 to 26, wherein the second device before and after the first device transmits the second signal, the method further comprising at least one of:

34. The method of claim 33, wherein the performance index information comprises at least one of:

35. The method of claim 34, wherein the method further comprises:

36. A doppler measurement device comprising:

a first transmitting module for transmitting a first signal to a second device;

37. A doppler measurement device comprising:

38. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the doppler measurement method of any one of claims 1 to 22.

39. A communication device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the doppler measurement method of any one of claims 23 to 35.

40. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implements the steps of the doppler measurement method according to any one of claims 1 to 22, or which, when executed by a processor, implements the steps of the doppler measurement method according to any one of claims 23 to 35.