WO2024078382A1 - Procédé et appareil de mesure de doppler, dispositif de communication - Google Patents

Procédé et appareil de mesure de doppler, dispositif de communication Download PDF

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Publication number
WO2024078382A1
WO2024078382A1 PCT/CN2023/123177 CN2023123177W WO2024078382A1 WO 2024078382 A1 WO2024078382 A1 WO 2024078382A1 CN 2023123177 W CN2023123177 W CN 2023123177W WO 2024078382 A1 WO2024078382 A1 WO 2024078382A1
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Prior art keywords
information
signal
time domain
doppler
domain resource
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PCT/CN2023/123177
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English (en)
Chinese (zh)
Inventor
姚健
秦飞
姜大洁
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维沃移动通信有限公司
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Publication of WO2024078382A1 publication Critical patent/WO2024078382A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a Doppler measurement method, device and communication equipment.
  • the frequency offset information calculated based on the received signal includes not only the Doppler frequency offset caused by channel mobility, but also the transmit and receive clock deviation.
  • Perception services usually need to obtain the channel Doppler information and detect dynamic targets in the environment based on it.
  • the embodiments of the present application provide a Doppler measurement method, apparatus and communication equipment, which can solve the problem of how to accurately obtain the Doppler frequency shift information of a channel.
  • a Doppler measurement method comprising:
  • the first device sends a first signal to the second device
  • the first device acquires first information sent by the second device
  • the first device measures the second signal sent by the second device to obtain second information
  • the first device obtains target information according to the first information and the second information
  • the first information is the Doppler frequency shift information obtained by the second device by measuring the first signal
  • the second information is the Doppler frequency shift information obtained by the first device by measuring the second signal
  • the target information is used to indicate the Doppler frequency shift information between the first device and the second device
  • the Doppler frequency shift information is the Doppler frequency shift information associated with the movement of the perceived target in the channel.
  • a Doppler measurement method comprising:
  • the second device receives the first signal sent by the first device
  • the second device obtains first information according to the first signal
  • the second device sends the first information and a second signal to the first device, the second signal is used to obtain second information associated with target information, the target information is obtained according to the first information and the second information,
  • the target information is used to indicate Doppler frequency shift information between the first device and the second device, and the Doppler frequency shift information is Doppler frequency shift information associated with motion of a perceived target in a channel.
  • a Doppler measurement device which is applied to a first device and includes:
  • a first sending module configured to send a first signal to a second device
  • a first acquisition module used to acquire first information sent by the second device
  • a first measuring module configured to measure a second signal sent by the second device to obtain second information
  • a second acquisition module used for obtaining target information according to the first information and the second information
  • the first information is the Doppler frequency shift information obtained by the second device by measuring the first signal
  • the second information is the Doppler frequency shift information obtained by the first device by measuring the second signal
  • the target information is used to indicate the Doppler frequency shift information between the first device and the second device
  • the Doppler frequency shift information is the Doppler frequency shift information associated with the movement of the perceived target in the channel.
  • a Doppler measurement device which is applied to a second device, including:
  • a first receiving module configured to receive a first signal sent by a first device
  • a third acquisition module configured to obtain first information according to the first signal
  • a second sending module is used to send the first information and the second signal to the first device, the second signal is used to obtain second information associated with target information, the target information is obtained based on the first information and the second information, the target information is used to indicate Doppler frequency shift information between the first device and the second device, and the Doppler frequency shift information is Doppler frequency shift information associated with the movement of the perceived target in the channel.
  • a terminal which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, the steps of the method described in the second aspect are implemented.
  • a terminal comprising a processor and a communication interface, wherein the communication interface is used to receive a first signal sent by a first device; the processor is used to obtain first information based on the first signal; the communication interface is used to send the first information and a second signal to the first device, the second signal is used to obtain second information associated with target information, the target information is obtained based on the first information and the second information, the target information is used to indicate Doppler frequency shift information between the first device and the second device, and the Doppler frequency shift information is Doppler frequency shift information associated with the movement of a perceived target in a channel.
  • a network side device which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect are implemented.
  • a network side device comprising a processor and a communication interface, wherein the communication interface is used to send a first signal to a second device; obtain first information sent by the second device; the processor is used to measure the second signal sent by the second device to obtain second information; obtain target information according to the first information and the second information; wherein the first information is the Doppler frequency shift information obtained by the second device by measuring the first signal, and the second information is the Doppler frequency shift information obtained by the first device by measuring the second signal Frequency shift information, the target information is used to indicate Doppler frequency shift information between the first device and the second device, and the Doppler frequency shift information is Doppler frequency shift information associated with the movement of the perceived target in the channel.
  • a Doppler measurement system comprising: a terminal (second device) and a network side device (first device), wherein the terminal can be used to execute the steps of the method described in the second aspect, and the network side device can be used to execute the steps of the method described in the first aspect.
  • a readable storage medium on which a program or instruction is stored.
  • the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.
  • a chip comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the method described in the first aspect, or to implement the method described in the second aspect.
  • a computer program/program product is provided, wherein the computer program/program product is stored in a storage medium and is executed by at least one processor to implement the steps of the method described in the first aspect or the second aspect.
  • a first device sends a first signal to a second device; obtains first information sent by the second device; the first device measures the second signal sent by the second device to obtain second information; the first device obtains target information based on the first information and the second information, and the target information is used to indicate the Doppler frequency shift information between the first device and the second device.
  • the second information also contains the clock frequency deviation of the transceiver device, and the transceiver devices corresponding to the first information and the second information are relative, therefore, based on the above-mentioned first information and the second information, a certain algorithm can be used to offset the transceiver clock frequency deviation, accurately obtain the Doppler frequency shift information between the first device and the second device, and improve the accuracy of the Doppler measurement.
  • FIG1 is a structural diagram of a communication system applicable to an embodiment of the present application.
  • FIG2 is a schematic diagram showing one of the flow charts of the Doppler measurement method according to an embodiment of the present application.
  • FIG3 is a schematic diagram showing one of the first signal and the second signal in an embodiment of the present application.
  • FIG4 shows a second schematic diagram of the first signal and the second signal in an embodiment of the present application
  • FIG5 is a schematic diagram showing SNR calculation of a one-dimensional graph in an embodiment of the present application.
  • FIG6 is a second flow chart of the Doppler measurement method according to an embodiment of the present application.
  • FIG7 shows one of the module schematic diagrams of the Doppler measurement device according to an embodiment of the present application.
  • FIG8 shows a second schematic diagram of a module of the Doppler measurement device according to an embodiment of the present application.
  • FIG9 is a block diagram showing a communication device according to an embodiment of the present application.
  • FIG10 is a block diagram showing a structure of a terminal according to an embodiment of the present application.
  • FIG. 11 is a block diagram showing a structure of a network side device according to an embodiment of the present application.
  • first, second, etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by “first” and “second” are generally of the same type, and the number of objects is not limited.
  • the first object can be one or more.
  • “and/or” in the specification and claims represents at least one of the connected objects, and the character “/" generally represents that the objects associated with each other are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR new radio
  • FIG1 shows a block diagram of a wireless communication system applicable to an embodiment of the present application.
  • the wireless communication system includes a terminal 11 and a network side device 12 .
  • the terminal 11 may be a mobile phone, a tablet computer, a laptop computer or a notebook computer, a personal digital assistant (PDA), a handheld computer, a netbook, an ultra-mobile personal computer (UMPC), a mobile Internet device (MID), an augmented reality (AR)/virtual reality (VR) device, a robot, a wearable device (Wearable Device), a vehicle user equipment (VUE), a pedestrian terminal (Pedestrian User Equipment, PUE), a smart home (a home appliance with wireless communication function, such as a refrigerator, a television, a washing machine or furniture, etc.), a game console, a personal computer (PC), a teller machine or a self-service machine and other terminal side devices, and the wearable device includes: a smart watch, a smart bracelet, a smart headset, a smart glasses, smart jewelry (
  • the network side device 12 may include access network equipment or core network equipment, wherein the access network equipment may also be referred to as wireless access network equipment, wireless access network (RAN), wireless access network function or wireless access network unit.
  • the access network equipment may include base stations, wireless local area networks (WLANs), wireless local area networks (WLANs), wireless access network functions, wireless access network units, ...
  • the base station may be referred to as a Node B, an evolved Node B (eNB), an access point, a base transceiver station (BTS), a radio base station, a radio transceiver, a basic service set (BSS), an extended service set (ESS), a home Node B, a home evolved Node B, a transmitting and receiving point (TRP) or some other suitable term in the field.
  • eNB evolved Node B
  • BTS base transceiver station
  • ESS extended service set
  • TRP transmitting and receiving point
  • the base station is not limited to a specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is taken as an example for introduction, and the specific type of the base station is not limited.
  • Perception capability refers to the ability of one or more devices with perception capabilities to perceive the direction, distance, speed and other information of the target object through the transmission and reception of wireless signals, or to detect, track, identify, and image the target object, event or environment.
  • the perception resolution will be significantly improved compared to centimeter waves, enabling 6G networks to provide more sophisticated perception services.
  • Typical perception functions and application scenarios are shown in Table 1.
  • Communication and perception integration means realizing the integrated design of communication and perception functions through spectrum sharing and hardware sharing in the same system. While transmitting information, the system can perceive information such as direction, distance, speed, and detect, track, and identify target objects or events.
  • the communication system and the perception system complement each other to achieve overall performance improvement and bring a better service experience.
  • radar and communication systems are a typical communication perception fusion application.
  • radar systems and communication systems were The two systems are strictly distinguished due to their different research objects and focuses, and in most scenarios, they are studied separately.
  • radar and communication systems are also typical ways of sending, acquiring, processing and exchanging information. There are many similarities in terms of working principles, system architecture and frequency bands.
  • both the communication system and the perception system are based on electromagnetic wave theory, and use the transmission and reception of electromagnetic waves to complete the acquisition and transmission of information;
  • both the communication system and the perception system have structures such as antennas, transmitters, receivers, and signal processors, and there is a great overlap in hardware resources; with the development of technology, the two have more and more overlaps in working frequency bands; in addition, there are similarities in key technologies such as signal modulation and reception detection, waveform design, etc.
  • the integration of communication and radar systems can bring many advantages, such as saving costs, reducing size, reducing power consumption, improving spectrum efficiency, reducing mutual interference, etc., thereby improving the overall performance of the system.
  • each perception link described below takes a sending node and a receiving node as an example.
  • different perception links can be selected according to different perception requirements.
  • Each perception link can have one or more sending nodes and receiving nodes, and the actual perception system can include multiple different perception links.
  • Base station echo sensing In this mode, the base station sends a sensing signal and obtains the sensing result by receiving the echo of the sensing signal.
  • base station 2 receives the sensing signal sent by base station 1 and obtains the sensing result.
  • Uplink air interface perception At this time, the base station receives the perception signal sent by the UE and obtains the perception result.
  • Downlink air interface perception At this time, the UE receives the perception signal sent by the base station and obtains the perception result.
  • Terminal echo perception At this time, the UE sends a perception signal and obtains a perception result by receiving the echo of the perception signal.
  • UE 2 receives the perception signal sent by UE 1 and obtains the perception result.
  • the corresponding carrier needs to be generated at both the transmitting and receiving ends to complete the corresponding up-conversion and down-conversion operations.
  • the transmitting end needs to move the transmitted signal to a specific frequency point for transmission through up-conversion, while the receiving end needs to down-convert the received signal to the baseband for subsequent processing.
  • the transmitting and receiving clocks are usually not guaranteed to be completely consistent.
  • the transmitting and receiving crystal oscillators have their own accuracy, which causes the carrier signal frequency generated by the system to deviate from the ideal frequency. This deviation is one of the main sources of carrier frequency offset of the received signal.
  • channel mobility can also cause carrier frequency offset.
  • the frequency offset information calculated based on the received signal not only includes the Doppler frequency offset caused by channel mobility, but also includes the transmit and receive clock deviation.
  • the transmit and receive clock deviation For communication services, it is usually not necessary to distinguish between the two. It is only necessary to compensate the frequency offset of the received signal as a whole to meet the demodulation performance.
  • perception services usually need to obtain channel Doppler information to detect dynamic targets in the environment.
  • the transmitted signal is s(t)
  • H reflectors there are H reflectors in the channel
  • the receiving end is down-converted
  • the baseband received signal is:
  • the receiving end can obtain the channel Doppler frequency shift information by detecting the phase change in the time domain dimension (time domain FFT).
  • time domain FFT time domain dimension
  • the clocks of the transmitting and receiving devices cannot be guaranteed to be completely consistent, that is, there is a frequency offset between the transmitting and receiving devices. Assume that the carrier frequency of the transmitting end is ft, the carrier frequency of the receiving end is fr, and ft ⁇ fr.
  • the baseband received signal is:
  • the receiving end cannot obtain the original channel Doppler frequency shift information by detecting the phase change in the time domain dimension, such as performing a time domain FFT operation.
  • an embodiment of the present application provides a Doppler measurement method, including:
  • Step 201 A first device sends a first signal to a second device.
  • the first device in the present application may be a network side device, such as a base station, and the second device may specifically be a terminal.
  • Step 202 The first device obtains first information sent by the second device.
  • the first information is Doppler frequency shift information obtained by the second device by measuring the first signal.
  • Step 203 The first device measures the second signal sent by the second device to obtain second information.
  • the first device may obtain the first information and the second signal simultaneously, or may obtain the first information and the second signal one after another.
  • the network side device sends the first signal through the downlink time slot, and the terminal sends the second signal through the uplink time slot.
  • step 203 may be performed simultaneously with step 201 above.
  • Step 204 The first device obtains target information according to the first information and the second information, wherein the target information is used to indicate Doppler frequency shift information between the first device and the second device, and the Doppler frequency shift information is Doppler frequency shift information associated with the motion of the perceived target in the channel. That is, the Doppler frequency shift information is Doppler frequency shift information caused by the motion of the perceived target in the channel.
  • a preset algorithm (such as adding two Doppler measurement results and dividing by 2) is used to offset the transmit and receive clock deviation to obtain target information, that is, the Doppler frequency shift information between the first device and the second device.
  • the transmission signal s(t) (i.e., the first signal) of the first device is expressed as follows after up-conversion:
  • the received signal after the second device down-converts the received first signal is represented as:
  • the second device sends the first information and sends a second signal s2(t):
  • the first device receives s2(t) and down-converts it to obtain:
  • the influence of the transmit-receive clock frequency deviation is offset when the two Doppler measurement results (the first information and the second information) are combined (that is, fr - ft is offset), and the obtained target information is not affected by the transmit-receive clock frequency deviation.
  • the Doppler frequency shift information in the embodiment of the present application includes the Doppler frequency shift information caused by the motion of at least one sensing target in the channel.
  • the sensing target is at least one of the reflectors.
  • the first device after the first device obtains the first information and the second information, it may also report the first information and the second information to the third device, and the third device obtains the above-mentioned target information based on the first information and the second information.
  • a first device sends a first signal to a second device; obtains first information sent by the second device; the first device measures the second signal sent by the second device to obtain second information; the first device obtains target information based on the first information and the second information, and the target information is used to indicate the Doppler frequency shift information between the first device and the second device.
  • the second information also contains the clock frequency deviation of the transceiver device, and the transceiver devices corresponding to the first information and the second information are relative, therefore, based on the above-mentioned first information and the second information, a certain algorithm can be used to offset the transceiver clock frequency deviation, accurately obtain the Doppler frequency shift information between the first device and the second device, and improve the accuracy of the Doppler measurement.
  • the first signal and the second signal have the same time domain resource format
  • the time domain resource format includes a time domain resource length and a time domain resource interval.
  • the first signal and the second signal have the same time domain resource format, which can ensure that the first signal and the second signal have the same Doppler measurement performance.
  • the first signal and the second signal have the same time domain resource length, and/or the first signal and the second signal have the same time domain resource interval.
  • time domain resource length of the first signal and the time domain resource length of the second signal are associated with Doppler resolution
  • the time domain resource interval of the first signal and the time domain resource interval of the second signal are associated with a maximum unambiguous Doppler frequency shift.
  • the time domain resource length T of the first signal and the second signal satisfies the following formula: T ⁇ 1/ ⁇ f d ;
  • T represents the time domain resource length
  • ⁇ f d represents the Doppler resolution
  • the time domain resource interval of the first signal and the time domain resource interval ⁇ T of the second signal satisfy the following formula: ⁇ T ⁇ 1/f d max ;
  • ⁇ T the direction of the target moving speed in the channel is not considered, it satisfies: ⁇ T ⁇ 1/f d max ; if the direction of the target moving speed in the channel is considered, it satisfies: ⁇ T ⁇ 1/(2
  • ⁇ 2 ⁇ f d ⁇ T ⁇ 2 ⁇
  • ⁇ 2 ⁇ f d ⁇ T ⁇ 2 ⁇
  • the relationship between the maximum unambiguous Doppler shift and the signal time domain interval is ⁇ T ⁇ 1/(f d max )
  • the Doppler resolution and the maximum unambiguous Doppler frequency shift are obtained according to a perception requirement, and the perception requirement is acquired by the first device.
  • the perceived need includes at least one of the following:
  • Perception services divided by type or specific to a certain service, such as environment reconstruction, breathing or heartbeat detection, positioning or trajectory tracking, action recognition, weather monitoring, radar ranging/speed/angle measurement, etc.;
  • Perception target area refers to the location area where the perception object may exist, or the location area where imaging or environmental reconstruction is required;
  • Perception object type The perception objects are classified according to their possible motion characteristics. Each perception object type contains information such as the motion speed, motion acceleration, and typical radar cross section (RCS) of a typical perception object.
  • RCS radar cross section
  • Perception QoS Performance indicators for perceiving the target area or object, including at least one of the following:
  • Perception resolution (further divided into: ranging resolution, angular resolution, velocity resolution, imaging resolution resolution), etc.
  • Perception accuracy (further divided into: ranging accuracy, angle measurement accuracy, speed measurement accuracy, positioning accuracy, etc.);
  • Perception range (further divided into: distance measurement range, speed measurement range, angle measurement range, imaging range, etc.);
  • Perception latency (the time interval from the sending of the perception signal to the acquisition of the perception result, or the time interval from the initiation of the perception demand to the acquisition of the perception result);
  • Perception update rate (the time interval between two consecutive perception operations and the acquisition of perception results);
  • detection probability the probability of correctly detecting the perceived object when it exists
  • False alarm probability the probability of erroneously detecting a perceived target when the perceived object does not exist
  • the first device sending a first signal to the second device includes:
  • the first device sends a first request to the second device, where the first request is used to request the second device to perform Doppler measurement;
  • the first device obtains a first response sent by the second device, where the first response is used to instruct the second device to participate in Doppler measurement, or to indicate that the second device refuses to participate in Doppler measurement and/or the reason for refusing to participate in Doppler measurement;
  • the first signal is sent to the second device.
  • the second device may determine whether to participate in the Doppler measurement according to at least one of its own mobility information, location information, power information, and sending resource information.
  • the method of the embodiment of the present application further includes:
  • the first device sends configuration information of a first signal to the second device
  • the first device sends configuration information of the first signal to the second device, so that the second device receives the first signal according to the configuration information of the first signal.
  • the configuration information of the first signal includes at least one of the following:
  • the configuration identification information is used to distinguish signal configuration information of different first signals
  • the above waveform can be Orthogonal frequency division multiplexing (OFDM), Single-carrier Frequency-Division Multiple Access (SC-FDMA), Orthogonal Time Frequency Space (OTFS), Frequency Modulated Continuous Wave (FMCW), pulse signal, etc.;
  • OFDM Orthogonal frequency division multiplexing
  • SC-FDMA Single-carrier Frequency-Division Multiple Access
  • OTFS Orthogonal Time Frequency Space
  • FMCW Frequency Modulated Continuous Wave
  • pulse signal etc.
  • the above subcarrier spacing may be the subcarrier spacing of an OFDM system, such as 30 KHz.
  • the above-mentioned guard interval is the time interval from the moment when the signal ends to the moment when the latest echo signal of the signal is received; this parameter is proportional to the maximum perception distance; for example, it can be calculated by c/(2R max ), where R max is the maximum perception distance (belonging to perception requirement information).
  • R max represents the maximum distance from the perception signal receiving and transmitting point to the signal transmitting point; in some cases, the OFDM signal cyclic prefix (CP) can play the role of the minimum guard interval; c is the speed of light.
  • the above-mentioned frequency domain starting position refers to the starting frequency point, and can also be the index of the starting resource element (Resource Element, RE) or the starting resource block (Resource Block, RB).
  • the frequency domain resource length refers to the frequency domain bandwidth, which is inversely proportional to the distance resolution.
  • the frequency domain bandwidth B of each first signal is ⁇ c/(2 ⁇ R), where c is the speed of light and ⁇ R is the distance resolution.
  • the frequency domain resource spacing is inversely proportional to the maximum unambiguous distance/delay, wherein for an OFDM system when subcarriers are continuously mapped, the frequency domain spacing is equal to the subcarrier spacing;
  • time domain starting position refers to the starting time point, and may also be a starting symbol, time slot, or frame index;
  • time domain resource length is also called burst duration, and the time domain resource length is inversely proportional to the Doppler resolution (which belongs to the sensing requirement information);
  • the above-mentioned time domain resource interval is the time interval between two adjacent signals.
  • the above signal power can take a value from -20dBm to 23dBm at an interval of 2dBm.
  • the above sequence information includes the generated sequence information (ZC (Zadoff-Chu) sequence or pseudo-noise sequence (Pseudo-noise, PN) sequence) and the generation method.
  • ZC Zadoff-Chu
  • PN pseudo-noise sequence
  • the above-mentioned signal direction includes angle information or beam information of signal transmission.
  • the method of the embodiment of the present application further includes:
  • the first device sends signal configuration information of a second signal to the second device.
  • the second device after receiving the signal configuration information of the second signal, the second device sends the second signal based on the configuration information.
  • the configuration information of the second signal includes at least one of the following:
  • the relative time domain position relationship information between the first signal and the second signal is the relative time domain position relationship information between the first signal and the second signal.
  • the relative time domain position relationship information includes at least one of the following:
  • the time domain resources for sending the second signal are associated with the channel stabilization time, that is, the time interval ( TRTD ) between the starting position of the first signal in the time domain and the ending position of the second signal in the time domain is less than or equal to the channel stabilization time, and the channel stabilization time is the time when the channel Doppler is approximately unchanged.
  • the relationship between the time domain resource position of the second signal sending and the time domain resource position of the first signal is shown in Figure 3.
  • the first signal and the second signal may be sent sequentially or alternately in the time domain, as shown in FIG4 .
  • the relative time domain position relationship between the first signal and the second signal does not include T offset2 and T offset3 .
  • the method of the embodiment of the present application further includes:
  • the first device sends first indication information to the second device, where the first indication information is used to instruct the second device to process the crystal oscillator frequency and/or provide information feedback;
  • the first indication information includes at least one of the following:
  • first threshold information where the first threshold information is associated with performance indicator information of a first signal sent by the first device
  • a crystal oscillator frequency adjustment indication where the crystal oscillator frequency adjustment indication is used to prohibit the second device from adjusting the crystal oscillator frequency, or to instruct the second device to send adjusted crystal oscillator frequency information.
  • the adjusted crystal oscillator frequency information may be a difference between the adjusted crystal oscillator frequency and the original crystal oscillator frequency.
  • the crystal oscillator frequency adjustment indication is used to prohibit the second device from adjusting the crystal oscillator frequency, if the second device down-converts the first signal based on the first frequency and the second device up-converts the second signal based on the second frequency, the first frequency and the second frequency are the same.
  • the second device may Perform crystal oscillator frequency adjustment. If 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 first frequency and the second frequency are different, and the second device feeds back the difference between the first frequency and the second frequency to the first device.
  • the method further includes:
  • the first device obtains second indication information sent by the second device, where the second indication information is used to indicate that performance indicator information of the first signal does not meet first threshold information, and/or is used to instruct the first device to adjust configuration information of the first signal;
  • the first device adjusts the configuration information of the first signal according to the second indication information, and resends the first signal according to the adjusted configuration information.
  • the second device measures the first signal and can also obtain performance indicator information of the first signal.
  • the second device determines that the performance indicator information does not meet the first threshold information
  • the second device sends the above-mentioned second indication information to the first device.
  • the above-mentioned second indication information can also indicate that the Doppler measurement fails.
  • the first device adjusts the configuration information of the first signal according to the second indication information, for example, increases the transmission power or time-frequency domain density of the first signal, and re-performs the Doppler measurement.
  • the first device determines that the measurement fails according to the second indication information, and feeds back a failure indication to the initiator of the perception demand.
  • the method further includes:
  • the first device When determining that the performance indicator information does not meet the first threshold information, the first device adjusts the configuration information of the first signal and resends the first signal according to the adjusted configuration information.
  • the second device measures the first signal and can also obtain the above-mentioned performance indicator information.
  • the second device can feed back the above-mentioned performance indicator information to the first device, so that when the first device determines that the performance indicator information of the first signal does not meet the first threshold information, it can adjust the configuration information of the first signal or determine that the measurement has failed, and feed back a failure indication to the initiator of the perception demand.
  • the first threshold information may be pre-agreed or indicated by the first indication information.
  • the configuration information of the first signal and/or the second signal configuration information and/or the related measurement feedback process may be agreed upon in advance.
  • the second device After the second device detects the first request, it may send the second signal and feedback the first information according to the agreed content.
  • the performance indicator information includes at least one of the following:
  • Signal strength information for example, Received Signal Strength Indication (RSSI) or Reference Signal Received Power (RSRP);
  • RSSI Received Signal Strength Indication
  • RSRP Reference Signal Received Power
  • SINR Signal to Interference plus Noise Ratio
  • SNR Signal to Noise Ratio
  • the first signal or the second signal includes at least one of the following:
  • DMRS Demodulation Reference Signal
  • CSI-RS Channel State Information-Reference Signal
  • PRS Positioning Reference Signal
  • Synchronization signals e.g., Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS);
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • Perceptual signals such as linear frequency modulation (Chirp) signals
  • Synaesthesia signal that is, a signal that can be used for perception and communication at the same time.
  • the method of the embodiment of the present application further includes:
  • a perception result is obtained according to the target information.
  • the first device after the first device obtains the target information, it can obtain a perception result based on the target information, and the perception result is a perception result corresponding to a perception service with Doppler as the basic measurement quantity, including but not limited to: movement speed, movement direction, whether a target exists or the number of targets, movement trajectory, action, gesture, vital signs (breathing, heartbeat, etc.), or,
  • the third device may be a sensing network function, a sensing network element or a sensing management function (Sensing Management Function, Sensing MF).
  • a sensing network function also called a sensing network element or a sensing management function (Sensing Management Function, Sensing MF)
  • Sensing Management Function can be located on the RAN side or the core network side. It refers to a network node in the core network and/or RAN that is responsible for at least one function such as sensing request processing, sensing resource scheduling, sensing information interaction, and sensing data processing. It can be based on the access and mobility management function (Access and Mobility Management Function, AMF) or location management function (Location Management Function, LMF) upgrade in the 5G network, or it can be other network nodes or newly defined network nodes.
  • the functional characteristics of the sensing network function/sensing network element may include at least one of the following:
  • a wireless signal sending 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
  • the target information includes a sensing processing request, sensing capability, sensing auxiliary data, a sensing measurement quantity type, sensing resource configuration information, etc., so as to obtain a value of a target sensing result or a sensing measurement quantity (uplink measurement quantity or downlink measurement quantity) sent by the wireless signal measuring device; wherein the wireless signal may also be referred to as a sensing signal.
  • the sensing method to be used is determined based on factors such as the type of sensing service, sensing service consumer information, required sensing service quality (QoS) requirement information, sensing capability of the wireless signal transmitting device, and sensing capability of the wireless signal measuring device.
  • the sensing method may include: base station A sends and base station B receives, or the base station sends and the terminal receives, or base station A sends and receives by itself, or the terminal sends and the base station receives, or the terminal sends and receives by itself, or terminal A sends Terminal B receives and waits.
  • the perception device serving the perception service based on factors such as the type of perception service, information about the perception service consumer, required perception QoS requirement information, the perception capability of the wireless signal sending device, and the perception capability of the wireless signal measuring device, wherein the perception device includes a wireless signal sending device and/or a wireless signal measuring device.
  • the perceived SNR may be a ratio of the perceived target associated signal power to the noise power, and the perceived SNR may be a ratio of the perceived target associated signal power to the sum of the powers of noise and interference.
  • the method for acquiring the power of the perceived target associated signal may be at least one of the following options:
  • Constant False Alarm Rate Detector CFAR
  • FFT Fast Fourier Transform
  • CFAR Constant False Alarm Rate Detector
  • CFAR is performed based on the Doppler one-dimensional image obtained by slow time dimension FFT processing of the echo signal, and the maximum amplitude sample point of CFAR over the threshold is used as the target sample point, and its amplitude is used as the target signal amplitude to calculate the perceived target associated signal power, as shown in Figure 5;
  • CFAR is performed, and the maximum amplitude sample point of CFAR over the threshold is taken as the target sample point, and its amplitude is taken as the target signal amplitude to calculate the perceived target associated signal power;
  • CFAR is performed based on the delay-Doppler-angle three-dimensional graph obtained by 3D-FFT processing of the echo signal, and the maximum amplitude sample point of CFAR over the threshold is used as the target sample point, and its amplitude is used as the target signal amplitude to calculate the perceived target associated signal power;
  • the method of determining the target signal amplitude can also be to use the maximum amplitude sample point of CFAR over-threshold and the average of several of its nearest over-threshold sample points as the target signal amplitude to calculate the perceived target associated signal power.
  • the method for obtaining the SNR/SINR of the echo signal may be at least one of the following options:
  • CFAR is performed based on the time delay one-dimensional graph obtained by fast time dimension FFT processing of the echo signal.
  • the maximum amplitude sample point of CFAR over the threshold is taken as the target sample point, and its amplitude is taken as the target signal amplitude.
  • All sample points in the one-dimensional graph other than ⁇ sample points from the target sample point are taken as interference/noise sample points, and their average interference/amplitude is counted as the interference/noise signal amplitude, as shown in Figure 5.
  • the SNR/SINR is calculated using the target signal amplitude and the interference/noise signal amplitude.
  • CFAR is performed based on the Doppler one-dimensional image obtained by slow time dimension FFT processing of the echo signal.
  • the maximum amplitude sample point of the CFAR threshold is taken as the target sample point, and its amplitude is taken as the target signal amplitude.
  • All sample points in the one-dimensional image other than ⁇ sample points from the target sample point are taken as interference/noise sample points, and their average amplitude is counted as the interference/noise signal amplitude.
  • the SNR/SINR is calculated based on the target signal amplitude and the interference/noise signal amplitude.
  • CFAR is performed.
  • the maximum amplitude sample point that passes the threshold of CFAR is taken as the target sample point, and its amplitude is taken as the target signal amplitude.
  • All sample points in the two-dimensional image that are ⁇ (fast time dimension) and ⁇ (slow time dimension) away from the target sample point are taken as interference/noise sample points, and their average amplitude is counted as interference/noise signal amplitude.
  • SNR/SINR is calculated based on the target signal amplitude and interference/noise signal amplitude.
  • CFAR is performed on the delay-Doppler-angle three-dimensional graph obtained by processing the echo signal with three-dimensional fast Fourier transform (3D-FFT).
  • 3D-FFT three-dimensional fast Fourier transform
  • the sample point with the maximum amplitude that passes the CFAR threshold is taken as the target sample point, and its amplitude is taken as the target signal amplitude.
  • All sample points in the three-dimensional graph that are ⁇ (fast time dimension), ⁇ (slow time dimension) and ⁇ (angle dimension) away from the target sample point are taken as interference/noise sample points, and their average amplitude is counted as the interference/noise signal amplitude.
  • SNR/SINR is calculated using the target signal amplitude and the interference/noise signal amplitude.
  • the method of determining the target signal amplitude may also be to use the maximum amplitude sample point of CFAR over-threshold and the average of several adjacent over-threshold sample points as the target signal amplitude;
  • the method for determining the interference/noise sample points can also be further screening based on the interference/noise sample points determined above, and the screening method is: for the one-dimensional delay graph, remove several sample points near the delay of 0, and use the remaining interference/noise sample points as noise sample points; for the one-dimensional Doppler graph, remove several sample points near the Doppler of 0, and use the remaining interference/noise sample points as interference/noise sample points; for the two-dimensional delay-Doppler graph, remove the interference/noise sample points in the strip range composed of several points near the delay of 0 and the entire Doppler range, and use the remaining noise sample points as interference/noise sample points; for the three-dimensional delay-Doppler-angle graph, remove the interference/noise sample points in the slice range composed of several points near the time dimension 0, the entire Doppler range and the entire angle range, and use the remaining interference/noise sample points as interference/noise sample points.
  • the embodiment of the present application further provides a Doppler measurement method, including:
  • Step 601 The second device receives a first signal sent by the first device.
  • the first device in the present application may be a network side device, such as a base station, and the second device may specifically be a terminal.
  • Step 602 The second device obtains first information according to the first signal.
  • Step 603 The second device sends the first information and the second signal to the first device, the second signal is used to obtain second information associated with the target information, the target information is obtained based on the first information and the second information, the target information is used to indicate Doppler frequency shift information between the first device and the second device, the Doppler frequency shift information is Doppler frequency shift information associated with the movement of the perceived target in the channel.
  • the second device receives the first signal sent by the first device; the second device obtains the first information according to the first signal; the second device sends the first information and the second signal to the first device, the second signal is used to obtain the second information associated with the target information, the target information is obtained according to the first information and the second information, and the target information is used to indicate the Doppler frequency shift information between the first device and the second device.
  • the first information contains the clock frequency deviation of the transceiver device
  • the second information also contains the clock frequency deviation of the transceiver device. The clock frequency deviation is eliminated, and the transceiver devices corresponding to the first information and the second information are relative. Therefore, a certain algorithm based on the first information and the second information can offset the transceiver clock frequency deviation, accurately obtain the Doppler frequency shift information between the first device and the second device, and improve the accuracy of Doppler measurement.
  • the method of the embodiment of the present application further includes:
  • the second device receives a first request, where the first request is used to request the second device to perform Doppler measurement;
  • the second device sends a first response according to the first request, where the first response is used to instruct the second device to participate in Doppler measurement, or to indicate that the second device refuses to participate in Doppler measurement and/or the reason for refusing to participate in Doppler measurement;
  • the first signal is received when the first response indicates that the second device participates in Doppler measurement.
  • the second device receiving a first signal sent by the first device includes:
  • the second device acquires configuration information of the first signal sent by the first device
  • the second device receives the first signal according to the configuration information of the first signal
  • the configuration information of the first signal includes at least one of the following:
  • the second device sending the second signal includes:
  • the second device acquires signal configuration information of the second signal
  • the configuration information of the second signal includes at least one of the following:
  • the relative time domain position relationship information between the first signal and the second signal is the relative time domain position relationship information between the first signal and the second signal.
  • the relative time domain position relationship information includes at least one of the following:
  • the time interval between the time domain start position of the first signal and the time domain end position of the second signal is the time interval between the time domain start position of the first signal and the time domain end position of the second signal.
  • the second device obtains first information according to the first signal, including:
  • the second device obtains first indication information sent by the first device
  • the first indication information includes at least one of the following:
  • first threshold information where the first threshold information is associated with performance indicator information of a first signal sent by the first device
  • a crystal oscillator frequency adjustment indication where the crystal oscillator frequency adjustment indication is used to prohibit the second device from adjusting the crystal oscillator frequency, or to instruct the second device to send adjusted crystal oscillator frequency information.
  • the second device obtains first information according to the first signal, including:
  • second indication information is sent to the first device, where the second indication information is used to indicate that the performance indicator information of the first signal does not meet the first threshold information, and/or is used to instruct the first device to adjust the first signal;
  • the adjusted first signal is measured to obtain the first information.
  • performing information feedback according to the first indication information includes:
  • the adjusted crystal oscillator frequency information is sent.
  • the performance indicator information includes at least one of the following:
  • a second device receives a first signal sent by a first device; the second device obtains first information based on the first signal; the second device sends the first information and a second signal to the first device, the second signal is used to obtain second information associated with target information, the target information is obtained based on the first information and the second information, and the target information is used to indicate the Doppler frequency shift information between the first device and the second device.
  • the second information also contains the clock frequency deviation of the transceiver device, and the transceiver devices corresponding to the first information and the second information are relative, therefore, based on the above-mentioned first information and the second information, a certain algorithm can be used to offset the transceiver clock frequency deviation, accurately obtain the Doppler frequency shift information between the first device and the second device, and improve the accuracy of the Doppler measurement.
  • the Doppler measurement method provided in the embodiment of the present application may be performed by a Doppler measurement device.
  • the Doppler measurement device performing the Doppler measurement method is taken as an example to illustrate the Doppler measurement device provided in the embodiment of the present application.
  • the embodiment of the present application further provides a Doppler measurement device 700, which is applied to a first device and includes:
  • a first measuring module 703, configured to measure a second signal sent by the second device to obtain second information
  • the first information is the Doppler frequency shift information obtained by the second device by measuring the first signal
  • the second information is the Doppler frequency shift information obtained by the first device by measuring the second signal
  • the target information is used to indicate the Doppler frequency shift information between the first device and the second device
  • the Doppler frequency shift information is the Doppler frequency shift information associated with the movement of the perceived target in the channel.
  • the first signal and the second signal have the same time domain resource format
  • the time domain resource format includes a time domain resource length and a time domain resource interval.
  • time domain resource length of the first signal and the time domain resource length of the second signal are associated with Doppler resolution
  • the time domain resource interval of the first signal and the time domain resource interval of the second signal are associated with a maximum unambiguous Doppler frequency shift.
  • the first sending module includes:
  • a first sending submodule configured to send a first request to a second device, wherein the first request is used to request the second device to perform Doppler measurement;
  • the first acquisition submodule is used to acquire a first response sent by the second device, wherein the first response is used to indicate the the second device participating in the Doppler measurement, or for indicating that the second device refuses to participate in the Doppler measurement and/or the reason for refusing to participate in the Doppler measurement;
  • the second sending submodule is configured to send the first signal to the second device when the first response indicates that the second device participates in Doppler measurement.
  • the device in the embodiment of the present application further includes:
  • a third sending module configured to send configuration information of the first signal to the second device
  • the configuration information of the first signal includes at least one of the following:
  • the device of the embodiment of the present application further includes:
  • a fourth sending module configured to send signal configuration information of a second signal to a second device
  • the configuration information of the second signal includes at least one of the following:
  • the relative time domain position relationship information between the first signal and the second signal is the relative time domain position relationship information between the first signal and the second signal.
  • the relative time domain position relationship information includes at least one of the following:
  • the time interval between the time domain start position of the first signal and the time domain end position of the second signal is the time interval between the time domain start position of the first signal and the time domain end position of the second signal.
  • the device of the embodiment of the present application further includes:
  • a fifth sending module configured to send first indication information to the second device
  • the first indication information includes at least one of the following:
  • first threshold information where the first threshold information is associated with performance indicator information of a first signal sent by the first device
  • a crystal oscillator frequency adjustment indication where the crystal oscillator frequency adjustment indication is used to prohibit the second device from adjusting the crystal oscillator frequency, or to instruct the second device to send adjusted crystal oscillator frequency information.
  • the device of the embodiment of the present application further includes:
  • a fourth acquisition module configured to acquire second indication information sent by a second device, where the second indication information is used to indicate that performance indicator information of the first signal does not meet first threshold information, and/or is used to instruct the first device to adjust configuration information of the first signal;
  • the first processing module is used to adjust the configuration information of the first signal according to the second indication information, and resend the first signal according to the adjusted configuration information; the first information is the measurement result corresponding to the resent first signal.
  • the device in the embodiment of the present application further includes:
  • a fifth acquisition module used to acquire performance indicator information of the first signal sent by the second device
  • the second processing module is used to adjust the configuration information of the first signal and resend the first signal according to the adjusted configuration information when it is determined that the performance indicator information does not meet the first threshold information; the first information is the measurement result corresponding to the resent first signal.
  • the performance indicator information includes at least one of the following:
  • the first signal or the second signal includes at least one of the following:
  • the device of the embodiment of the present application further includes:
  • the sixth acquisition module is used to obtain a perception result based on the target information.
  • a first device sends a first signal to a second device; obtains first information sent by the second device; the first device measures the second signal sent by the second device to obtain second information; the first device obtains target information based on the first information and the second information, and the target information is used to indicate the Doppler frequency shift information between the first device and the second device.
  • the second information also contains the clock frequency deviation of the transceiver device, and the transceiver devices corresponding to the first information and the second information are relative, therefore, based on the above-mentioned first information and the second information, a certain algorithm can be used to offset the transceiver clock frequency deviation, accurately obtain the Doppler frequency shift information between the first device and the second device, and improve the accuracy of the Doppler measurement.
  • the embodiment of the present application further provides a Doppler measurement device 800, which is applied to a second device and includes:
  • the second sending module 803 is used to send the first information and the second signal to the first device, the second signal is used to obtain second information associated with the target information, the target information is obtained based on the first information and the second information, the target information is used to indicate the Doppler frequency shift information between the first device and the second device, and the Doppler frequency shift information is the Doppler frequency shift information associated with the movement of the perceived target in the channel.
  • the device of the embodiment of the present application further includes:
  • a second receiving module configured to receive a first request, where the first request is used to request the second device to perform Doppler measurement
  • a sixth sending module configured to send a first response according to the first request, wherein the first response is used to instruct the second device to participate in the Doppler measurement, or to indicate that the second device refuses to participate in the Doppler measurement and/or the reason for refusing to participate in the Doppler measurement;
  • the first signal is received when the first response indicates that the second device participates in Doppler measurement.
  • the first receiving module includes:
  • a second acquisition submodule used to acquire configuration information of a first signal sent by a first device
  • a first receiving submodule configured to receive the first signal according to the configuration information of the first signal
  • the configuration information of the first signal includes at least one of the following:
  • the second sending module includes:
  • a third acquisition submodule used to acquire signal configuration information of the second signal
  • the third sending submodule is configured to send the second signal according to the signal configuration information of the second signal; wherein the configuration information of the second signal includes at least one of the following:
  • the relative time domain position relationship information between the first signal and the second signal is the relative time domain position relationship information between the first signal and the second signal.
  • the relative time domain position relationship information includes at least one of the following:
  • the time interval between the time domain start position of the first signal and the time domain end position of the second signal is the time interval between the time domain start position of the first signal and the time domain end position of the second signal.
  • the third acquisition module includes:
  • a fourth acquisition submodule used to acquire first indication information sent by the first device
  • a first processing submodule configured to process the first signal and/or provide information feedback according to the first indication information
  • the first indication information includes at least one of the following:
  • first threshold information where the first threshold information is associated with performance indicator information of a first signal sent by the first device
  • a crystal oscillator frequency adjustment indication where the crystal oscillator frequency adjustment indication is used to prohibit the second device from adjusting the crystal oscillator frequency, or to instruct the second device to send adjusted crystal oscillator frequency information.
  • the third acquisition module includes:
  • a fifth acquisition submodule configured to measure the first signal to obtain performance indication information of the first signal
  • a fourth sending submodule configured to, when determining that the performance indication information of the first signal does not satisfy the first threshold information, send second indication information to the first device, wherein the second indication information is used to indicate that the performance indicator information of the first signal does not satisfy the first threshold information, and/or to instruct the first device to adjust the first signal;
  • a sixth acquisition submodule used to acquire the adjusted first signal sent by the first device
  • the seventh acquisition submodule is used to measure the adjusted first signal to obtain the first information.
  • the first processing submodule is used to measure the first signal to obtain performance indicator information of the first signal; and send the performance indicator information of the first signal to the first device;
  • the adjusted crystal oscillator frequency information is sent.
  • the performance indicator information includes at least one of the following:
  • a second device receives a first signal sent by a first device; the second device obtains first information based on the first signal; the second device sends the first information and a second signal to the first device, the second signal is used to obtain second information associated with target information, the target information is obtained based on the first information and the second information, and the target information is used to indicate the Doppler frequency shift information between the first device and the second device.
  • the second information also contains the clock frequency deviation of the transceiver device, and the transceiver devices corresponding to the first information and the second information are relative, therefore, based on the above-mentioned first information and the second information, a certain algorithm can be used to offset the transceiver clock frequency deviation, accurately obtain the Doppler frequency shift information between the first device and the second device, and improve the accuracy of the Doppler measurement.
  • the Doppler measurement device in the embodiment of the present application can be an electronic device, such as an electronic device with an operating system, or a component in an electronic device, such as an integrated circuit or a chip.
  • the electronic device can be a terminal, or can be other devices other than a terminal.
  • the terminal can include but is not limited to the types of terminals 11 listed above, and other devices can be servers, network attached storage (NAS), etc., and the present application The embodiments are not particularly limited.
  • the Doppler measurement device provided in the embodiment of the present application can implement each process implemented by the method embodiments of Figures 2 to 6 and achieve the same technical effect. To avoid repetition, it will not be described here.
  • an embodiment of the present application further provides a communication device 900, including a processor 901 and a memory 902, wherein the memory 902 stores a program or instruction that can be run on the processor 901.
  • the communication device 900 is a terminal
  • the program or instruction is executed by the processor 901 to implement the various steps of the Doppler measurement method embodiment executed by the second device, and the same technical effect can be achieved.
  • the communication device 900 is a network side device
  • the program or instruction is executed by the processor 901 to implement the various steps of the Doppler measurement method embodiment executed by the first device, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface, the communication interface is used to receive a first signal sent by a first device; the processor is used to obtain first information based on the first signal; the communication interface is used to send the first information and a second signal to the first device, the second signal is used to obtain second information associated with target information, the target information is obtained based on the first information and the second information, the target information is used to indicate Doppler frequency shift information between the first device and the second device, the Doppler frequency shift information is Doppler frequency shift information associated with the movement of a perceived target in a channel.
  • FIG10 is a schematic diagram of the hardware structure of a terminal implementing the embodiment of the present application.
  • the terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009 and at least some of the components of a processor 1010.
  • the terminal 1000 can also include a power supply (such as a battery) for supplying power to each component, and the power supply can be logically connected to the processor 1010 through a power management system, so as to implement functions such as charging, discharging, and power consumption management through the power management system.
  • a power supply such as a battery
  • the terminal structure shown in FIG10 does not constitute a limitation on the terminal, and the terminal can include more or fewer components than shown in the figure, or combine certain components, or arrange components differently, which will not be described in detail here.
  • the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes the image data of the static picture or video obtained by the image capture device (such as a camera) in the video capture mode or the image capture mode.
  • the display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc.
  • the user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072.
  • the touch panel 10071 is also called a touch screen.
  • the touch panel 10071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, etc.), a trackball, a mouse, and a joystick, which will not be repeated here.
  • the radio frequency unit 1001 after receiving the downlink data from the network side device, can transmit it to the processor. In addition, the radio frequency unit 1001 can send uplink data to the network side device.
  • the radio frequency unit 1001 includes but is not limited to an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.
  • the memory 1009 can be used to store software programs or instructions and various data.
  • the memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instruction required for at least one function (such as a sound playback function, an image playback function, etc.), etc.
  • the memory 1009 may include a volatile memory or a non-volatile memory, or the memory 1009 may include both volatile and non-volatile memories.
  • the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (RAM), a static random access memory (SRAM), a dynamic random access memory (DRAM), a synchronous dynamic random access memory (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM) and a direct memory bus random access memory (DRRAM).
  • the memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.
  • the processor 1010 may include one or more processing units; optionally, the processor 1010 integrates an application processor and a modem processor, wherein the application processor mainly processes operations related to an operating system, a user interface, and application programs, and the modem processor mainly processes wireless communication signals, such as a baseband processor. It is understandable that the modem processor may not be integrated into the processor 1010.
  • the radio frequency unit 1001 is used to receive a first signal sent by a first device; the processor 1010 is used to obtain first information according to the first signal; the radio frequency unit 1001 is used to send the first information and the second signal to the first device, the second signal is used to obtain second information associated with target information, the target information is obtained according to the first information and the second information, the target information is used to indicate Doppler frequency shift information between the first device and the second device, and the Doppler frequency shift information is Doppler frequency shift information associated with the movement of the perceived target in the channel.
  • a second device receives a first signal sent by a first device; the second device obtains first information based on the first signal; the second device sends the first information and a second signal to the first device, the second signal is used to obtain second information associated with target information, the target information is obtained based on the first information and the second information, and the target information is used to indicate the Doppler frequency shift information between the first device and the second device.
  • the second information also contains the clock frequency deviation of the transceiver device, and the transceiver devices corresponding to the first information and the second information are relative, therefore, based on the above-mentioned first information and the second information, a certain algorithm can be used to offset the transceiver clock frequency deviation, accurately obtain the Doppler frequency shift information between the first device and the second device, and improve the accuracy of the Doppler measurement.
  • the radio frequency unit 1001 is further configured to:
  • the first signal is received when the first response indicates that the second device participates in Doppler measurement.
  • the radio frequency unit 1001 is further configured to:
  • the configuration information of the first signal includes at least one of the following:
  • the radio frequency unit 1001 is further configured to:
  • the configuration information of the second signal includes at least one of the following:
  • the relative time domain position relationship information between the first signal and the second signal is the relative time domain position relationship information between the first signal and the second signal.
  • the relative time domain position relationship information includes at least one of the following:
  • the time interval between the time domain start position of the first signal and the time domain end position of the second signal is the time interval between the time domain start position of the first signal and the time domain end position of the second signal.
  • the processor 1010 is configured to obtain first indication information sent by the first device;
  • the first indication information includes at least one of the following:
  • first threshold information where the first threshold information is associated with performance indicator information of a first signal sent by the first device
  • a crystal oscillator frequency adjustment indication where the crystal oscillator frequency adjustment indication is used to prohibit the second device from adjusting the crystal oscillator frequency, or to instruct the second device to send adjusted crystal oscillator frequency information.
  • the processor 1010 is used to measure the first signal to obtain performance indication information of the first signal; when it is determined that the performance indication information of the first signal does not meet the first threshold information, send second indication information to the first device, the second indication information is used to indicate that the performance indicator information of the first signal does not meet the first threshold information, and/or is used to instruct the first device to adjust the first signal; obtain the adjusted first signal sent by the first device; measure the adjusted first signal to obtain the first information.
  • the processor 1010 is configured to measure the first signal to obtain performance indicator information of the first signal; and send the performance indicator information of the first signal to the first device;
  • the adjusted crystal oscillator frequency information is sent.
  • the performance indicator information includes at least one of the following:
  • a second device receives a first signal sent by a first device; the second device obtains first information based on the first signal; the second device sends the first information and a second signal to the first device, the second signal is used to obtain second information associated with target information, the target information is obtained based on the first information and the second information, and the target information is used to indicate Doppler frequency shift information between the first device and the second device.
  • the second information also contains the clock frequency deviation of the transceiver device, and the transceiver devices corresponding to the first information and the second information are relative, therefore, based on the above-mentioned first information and the second information, a certain algorithm is used to offset the transceiver clock frequency deviation, and the Doppler frequency shift information between the first device and the second device is accurately obtained, thereby improving the accuracy of the Doppler measurement.
  • the embodiment of the present application also provides a network side device, including a processor and a communication interface, the communication interface is used to send a first signal to a second device; obtain the first information sent by the second device; measure the second signal sent by the second device to obtain the second information; the processor is used to obtain target information according to the first information and the second information; wherein the first information is the Doppler frequency shift information obtained by the second device by measuring the first signal, the second information is the Doppler frequency shift information obtained by the first device by measuring the second signal, the target information is used to indicate the Doppler frequency shift information between the first device and the second device, and the Doppler frequency shift information is the Doppler frequency shift information associated with the motion of the perceived target in the channel.
  • This network side device embodiment corresponds to the above-mentioned first device method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this network side device embodiment, and can achieve the same technical effect.
  • the embodiment of the present application also provides a network side device.
  • the network side device 1100 includes: an antenna 111, a radio frequency device 112, a baseband device 113, a processor 114 and a memory 115.
  • the antenna 111 is connected to the radio frequency device 112.
  • the radio frequency device 112 receives information through the antenna 111 and sends the received information to the baseband device 113 for processing.
  • the baseband device 113 processes the information to be sent and sends it to the radio frequency device 112.
  • the radio frequency device 112 processes the received information and sends it out through the antenna 111.
  • the method executed by the first device in the above embodiment may be implemented in the baseband device 113, which includes a baseband processor.
  • the baseband device 113 may include, for example, at least one baseband board, on which a plurality of chips are arranged, as shown in FIG11 , wherein one of the chips is, for example, a baseband processor, which is connected to the memory 115 through a bus interface to call a program in the memory 115 and execute the network device operations shown in the above method embodiment.
  • the network side device may also include a network interface 116, which is, for example, a common public radio interface (CPRI).
  • a network interface 116 which is, for example, a common public radio interface (CPRI).
  • CPRI common public radio interface
  • the network side device 1100 of the embodiment of the present application also includes: instructions or programs stored in the memory 115 and executable on the processor 114.
  • the processor 114 calls the instructions or programs in the memory 115 to execute the method executed by each module shown in Figure 7 and achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored.
  • a program or instruction is stored.
  • the program or instruction is executed by a processor, each process of the above-mentioned Doppler measurement method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes a computer readable storage medium, such as a computer read-only memory ROM, a random access memory RAM, a magnetic disk or an optical disk.
  • the present application embodiment further provides a chip, the chip comprising a processor and a communication interface, the communication interface and The processors are coupled, and the processors are used to run programs or instructions to implement various processes of the above-mentioned Doppler measurement method embodiment, and can achieve the same technical effect. To avoid repetition, they are not described here.
  • the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.
  • the embodiment of the present application further provides a computer program/program product, which is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the various processes of the above-mentioned Doppler measurement method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.
  • An embodiment of the present application also provides a Doppler measurement system, including: a first device and a second device, wherein the first device can be used to execute the steps of the method embodiment on the first device side as described above, and the second device can be used to execute the steps of the method embodiment on the second device side as described above.
  • the technical solution of the present application can be embodied in the form of a computer software product, which is stored in a storage medium (such as ROM/RAM, a magnetic disk, or an optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the methods described in each embodiment of the present application.
  • a storage medium such as ROM/RAM, a magnetic disk, or an optical disk
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente demande se rapporte au domaine technique des communications et divulgue un procédé et un appareil de Doppler, ainsi qu'un dispositif de communication. Le procédé de mesure de Doppler, dans les modes de réalisation de la présente demande, comprend les étapes comprenant : l'envoi par un premier dispositif d'un premier signal à un second dispositif ; l'acquisition par le premier dispositif de premières informations envoyées par le second dispositif ; mesure par le premier dispositif d'un second signal envoyé par le second dispositif de façon à obtenir des secondes informations ; obtention par le premier dispositif d'informations cibles en fonction des premières informations et des secondes informations, les premières informations étant les informations de décalage de fréquence Doppler obtenues par le second dispositif effectuant une mesure sur le premier signal, les secondes informations étant les informations de décalage de fréquence Doppler obtenues par le premier dispositif effectuant une mesure sur le second signal, les informations cibles étant utilisées pour indiquer les informations de décalage de fréquence Doppler entre le premier dispositif et le second dispositif, et les informations de décalage de fréquence Doppler étant les informations de décalage de fréquence Doppler associées au mouvement d'une cible de détection dans un canal.
PCT/CN2023/123177 2022-10-10 2023-10-07 Procédé et appareil de mesure de doppler, dispositif de communication WO2024078382A1 (fr)

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CN202211236784.9 2022-10-10

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180191416A1 (en) * 2016-06-07 2018-07-05 Telefonaktiebolaget Lm Ericsson (Publ) Doppler Shift or Doppler Spread as Input for Beam-Switching or Node-Switching in Wireless Networks
CN114325679A (zh) * 2021-10-21 2022-04-12 南方科技大学 基于时延多普勒域信号处理的感知通信一体化方法
CN114402216A (zh) * 2019-09-19 2022-04-26 瑞典爱立信有限公司 无线通信系统中的多站点距变率测量汇编
CN114916039A (zh) * 2021-02-10 2022-08-16 维沃移动通信有限公司 接入方法、装置、通信设备及可读存储介质

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180191416A1 (en) * 2016-06-07 2018-07-05 Telefonaktiebolaget Lm Ericsson (Publ) Doppler Shift or Doppler Spread as Input for Beam-Switching or Node-Switching in Wireless Networks
CN114402216A (zh) * 2019-09-19 2022-04-26 瑞典爱立信有限公司 无线通信系统中的多站点距变率测量汇编
CN114916039A (zh) * 2021-02-10 2022-08-16 维沃移动通信有限公司 接入方法、装置、通信设备及可读存储介质
CN114325679A (zh) * 2021-10-21 2022-04-12 南方科技大学 基于时延多普勒域信号处理的感知通信一体化方法

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