Signal sending method, signal measuring method, device and equipment

Abstract

The invention discloses a signal sending method, a signal measuring method, devices and equipment, and belongs to the technical field of communication, and the signal sending method comprises the steps that first equipment sends a target signal, and the target signal is used for measurement; wherein the target signal comprises M segments of chirp Chirp signals, and M is a positive integer greater than 1; for two adjacent sections of Chirp signals in the M sections of Chirp signals, the starting frequency of the latter section of Chirp signal is the ending frequency of the former section of Chirp signal, and the frequency modulation slopes of the two adjacent sections of Chirp signals are different.

Description

Technical Field

[0001] This application belongs to the field of communication technologies, and particularly relates to a signal sending method, a signal measurement method, a device, and an apparatus. Background Art

[0002] In some related technologies, orthogonal frequency division multiplexing (OFDM) system reference signals are mainly used for measurement. However, when the reference signals of the OFDM system are used for measurement, the peak-to-average power ratio is high, resulting in poor measurement performance of the device. Summary of the Invention

[0003] Embodiments of this application provide a signal sending method, a signal measurement method, a device, and an apparatus, which can solve the problem of poor measurement performance of the device.

[0004] In a first aspect, a signal sending method is provided, including:

[0005] A first device sends a target signal, where the target signal is used for measurement;

[0006] Wherein, the target signal includes M segments of chirp signals, and M is a positive integer greater than 1;

[0007] For two adjacent segments of chirp signals among the M segments of chirp signals, the starting frequency of the latter segment of chirp signal is the ending frequency of the former segment of chirp signal, and the frequency modulation slopes of the two adjacent segments of chirp signals are different.

[0008] In a second aspect, a signal measurement method is provided, including:

[0009] A second device measures a target signal to obtain a measurement result;

[0010] Wherein, the target signal includes M segments of chirp signals, and M is a positive integer greater than 1;

[0011] For two adjacent segments of chirp signals among the M segments of chirp signals, the starting frequency of the latter segment of chirp signal is the ending frequency of the former segment of chirp signal, and the frequency modulation slopes of the two adjacent segments of chirp signals are different.

[0012] In a third aspect, a signal sending device is provided, including:

[0013] A sending module, configured to send a target signal, where the target signal is used for measurement;

[0014] Wherein, the target signal includes M segments of chirp signals, and M is a positive integer greater than 1;

[0015] For two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

[0016] In a fourth aspect, a signal measurement device is provided, including:

[0017] A measurement module for measuring a target signal to obtain a measurement result;

[0018] Wherein, the target signal includes M chirp Chirp signals, and M is a positive integer greater than 1;

[0019] For two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

[0020] In a fifth aspect, a device is provided, the device includes a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the signal sending method provided in the embodiments of the present application are implemented.

[0021] In a sixth aspect, a device is provided, including a processor and a communication interface. Wherein, the communication interface is used to send a target signal for measurement; wherein, the target signal includes M chirp Chirp signals, and M is a positive integer greater than 1; for two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

[0022] In a seventh aspect, a device is provided, the device includes a processor and a memory, the memory stores a program or instruction that can run on the processor, and when the program or instruction is executed by the processor, the steps of the signal measurement method provided in the embodiments of the present application are implemented.

[0023] In an eighth aspect, a device is provided, including a processor and a communication interface. Wherein, the communication interface is used to measure a target signal to obtain a measurement result; wherein, the target signal includes M chirp Chirp signals, and M is a positive integer greater than 1; for two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

[0024] In a ninth aspect, a readable storage medium is provided, on which a program or instructions are stored. When the program or instructions are executed by a processor, the steps of the signal sending method provided in the embodiments of the present application are implemented, or the steps of the signal measurement method provided in the embodiments of the present application are implemented.

[0025] In a tenth aspect, a wireless communication system is provided, including: a first device and a second device. The first device can be used to execute the steps of the signal sending method provided in the embodiments of the present application, and the second device can be used to execute the steps of the signal measurement method provided in the embodiments of the present application.

[0026] In an eleventh aspect, a chip is provided. The chip includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run a program or instructions to implement the signal sending method provided in the embodiments of the present application, or to implement the signal measurement method provided in the embodiments of the present application.

[0027] In a twelfth aspect, a computer program / program product is provided. The computer program / program product is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the steps of the signal sending method provided in the embodiments of the present application, and the computer program / program product is executed by at least one processor to implement the steps of the signal measurement method provided in the embodiments of the present application.

[0028] In the embodiments of the present application, a first device sends a target signal for measurement. Among them, the target signal includes M segments of chirp signals, and M is a positive integer greater than 1. For two adjacent chirp signals among the M segments of chirp signals, the starting frequency of the latter chirp signal is the ending frequency of the former chirp signal, and the frequency modulation slopes of the two adjacent chirp signals are different. In this way, measurement can be realized based on M segments of chirp signals, and the chirp signal has the characteristic of low peak-to-average ratio. Therefore, sending the above target signal for measurement can reduce the peak-to-average ratio during measurement to improve the measurement performance of the device. In addition, since for two adjacent chirp signals among the M segments of chirp signals, the starting frequency of the latter chirp signal is the ending frequency of the former chirp signal, and the frequency modulation slopes of the two adjacent chirp signals are different, this can increase the flexibility of target signal design to reduce the interference between different target signals and further improve the measurement performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a block diagram of a wireless communication system to which the embodiments of the present application can be applied;

[0030] Figure 2It is a schematic diagram of a perception measurement scenario provided by an embodiment of the present application;

[0031] Figure 3 It is a flowchart of a signal sending method provided by an embodiment of the present application;

[0032] Figure 4 It is a schematic diagram of signal transmission provided by an embodiment of the present application;

[0033] Figure 5 It is another schematic diagram of signal transmission provided by an embodiment of the present application;

[0034] Figure 6 It is another schematic diagram of signal transmission provided by an embodiment of the present application;

[0035] Figure 7 It is a schematic diagram of area division provided by an embodiment of the present application;

[0036] Figure 8 It is another schematic diagram of area division provided by an embodiment of the present application;

[0037] Figures 9 to 15 It is a schematic diagram of the relevant characteristics of a signal provided by an embodiment of the present application;

[0038] Figure 16 It is a flowchart of a signal measurement method provided by an embodiment of the present application;

[0039] Figure 17 It is a schematic diagram of signal measurement provided by an embodiment of the present application;

[0040] Figure 18 It is another schematic diagram of signal measurement provided by an embodiment of the present application;

[0041] Figure 19 It is a structural diagram of a signal sending device provided by an embodiment of the present application;

[0042] Figure 20 It is a structural diagram of a signal measurement device provided by an embodiment of the present application;

[0043] Figure 21 It is a structural diagram of a communication device provided by an embodiment of the present application;

[0044] Figure 22 It is another structural diagram of a communication device provided by an embodiment of the present application;

[0045] Figure 23 It is another structural diagram of a communication device provided by an embodiment of the present application. Detailed implementation manners

[0046] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0047] The terms "first", "second", etc. in the present application are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that such terms can be interchanged under appropriate circumstances so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first" and "second" are usually of the same type, and do not limit the number of objects. For example, the first object can be one or more. In addition, "or" in the present application means at least one of the connected objects. For example, "A or B" covers three scenarios, namely, Scenario 1: including A and not including B; Scenario 2: including B and not including A; Scenario 3: including both A and B. The character " / " generally indicates that the related objects before and after are in an "or" relationship.

[0048] The term "indication" in the present application can be either a direct indication (or an explicit indication) or an indirect indication (or an implicit indication). Among them, a direct indication can be understood as that the sender clearly informs the recipient of specific information, operations to be performed, or request results, etc. in the sent indication; an indirect indication can be understood as that the recipient determines the corresponding information according to the indication sent by the sender, or makes a judgment and determines the operations to be performed or request results, etc. according to the judgment result.

[0049] It should be noted that the technology described in the embodiments of this application is not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, and can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in the embodiments of this application are often used interchangeably, and the described technology can be used in the above-mentioned systems and radio technologies, as well as in other systems and radio technologies. The following description describes the New Radio (NR) system for example purposes, and the NR terminology is used in most of the following descriptions, but these technologies can also be applied to systems other than the NR system, such as the 6th Generation (6G) communication system. th Generation, 6G) communication system.

[0050] Figure 1A block diagram of a wireless communication system to which embodiments of the present application can be applied is shown. The wireless communication system includes a terminal 11 and a network-side device 12. Among them, the terminal 11 can be a mobile phone, a tablet personal computer, a laptop computer, 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), a virtual reality (VR) device, a robot, a wearable device, a flight vehicle, a vehicle user equipment (VUE), a shipborne device, a pedestrian user equipment (PUE), a smart home (home devices with wireless communication functions, such as refrigerators, TVs, washing machines, or furniture, etc.), a game console, a personal computer (PC), a teller machine, or a self-service machine, etc., terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart ankle chains, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle user equipment can also be referred to as a vehicle terminal, a vehicle controller, a vehicle module, a vehicle component, a vehicle chip, or a vehicle unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiments of the present application.

[0051] The network - side device 12 may include an access network device or a core network device. Among them, the access network device may also be referred to as a radio access network (RAN) device, a radio access network function, or a radio access network unit. The access network device may include a base station, a wireless local area network (WLAN) access point (AP), or a wireless fidelity (WiFi) node, etc. Among them, the base station may be referred to as Node B (NB), evolved Node B (eNB), next - generation Node B (gNB), new radio Node B (NR Node B), access point, relay base station (RBS), serving base station (SBS), base transceiver station (BTS), radio base station, radio transceiver, basic service set (BSS), extended service set (ESS), home Node B (HNB), home evolved Node B, transmission reception point (TRP), or some other suitable term in the art. As long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiments of this 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.

[0052] The core network device may include, but is not limited to, at least one of the following: core network node, core network function, Mobility Management Entity (MME), Access and Mobility Management Function (AMF), Session Management Function (SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Server Discovery Function (EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (L-NEF), Binding Support Function (BSF), Application Function (AF), Location Management Function (LMF), Gateway Mobile Location Centre (GMLC), Network Data Analytics Function (NWDAF), etc. It should be noted that in the embodiments of this application, only the core network devices in the NR system are taken as examples for introduction, and the specific types of core network devices are not limited.

[0053] In some embodiments, in addition to communication capabilities, the network-side device and the terminal may have sensing capabilities. The sensing capabilities refer to one or more devices with sensing capabilities that can sense information such as the orientation, distance, and speed of a target object through the transmission and reception of wireless signals, or detect, track, identify, image, etc. a target object, event, or environment. Some sensing functions and application scenarios are shown in Table 1:

[0054] Table 1

[0055]

[0056] It should be noted that the sensing categories shown in Table 1 above are only for illustrative purposes, and the categories of sensing measurements in the embodiments of the present application are not limited.

[0057] In addition, the embodiments of the present application can be applied to a communication-sensing integrated scenario. Among them, communication-sensing integration refers to the integrated design of communication and sensing functions through spectrum sharing and hardware sharing in the same system. While the system is transmitting information, it can sense information such as orientation, distance, and speed, detect, track, and identify a target device or event. The communication system and the sensing system complement each other to achieve an improvement in overall performance and bring a better service experience.

[0058] For example: The integration of communication and radar belongs to a typical communication-sensing integration (communication-sensing fusion) application, and the integration of communication and radar systems can bring many advantages, such as cost savings, size reduction, power consumption reduction, spectrum efficiency improvement, mutual interference reduction, etc., thereby improving the overall performance of the system.

[0059] In the embodiments of the present application, according to the different sensing signal sending nodes and receiving nodes, it may include but is not limited to Figure 2 the 6 sensing links shown. It should be noted that Figure 2 each sensing link in is illustrated with a sending node and a receiving node. In an actual system, different sensing links can be selected according to different sensing requirements. Each sensing link can have one or more sending nodes and receiving nodes, and the actual sensing system can include multiple different sensing links. And Figure 2 the sensing targets in use people and vehicles as examples, and it is assumed that neither people nor vehicles carry or install signal transceiver devices. The sensing targets in the actual scenario will be more diverse.

[0060] Sensing link 1: Base station self-transmitting and self-receiving sensing. In this mode, the base station sends a sensing signal and obtains a sensing result by receiving the echo of the sensing signal;

[0061] Sensing link 2: Air interface sensing between base stations. In this mode, base station 2 receives the sensing signal sent by base station 1 and obtains a sensing result.

[0062] Sensing link 3: Uplink air interface sensing. In this mode, the base station receives the sensing signal sent by the terminal and obtains the sensing result.

[0063] Sensing link 4: Downlink air interface sensing. In this mode, the terminal receives the sensing signal sent by the base station and obtains the sensing result.

[0064] Sensing link 5: Self-transmitting and self-receiving sensing by the terminal. In this mode, the terminal sends a sensing signal and obtains the sensing result by receiving the echo of the sensing signal.

[0065] Sensing link 6: Sidelink sensing between terminals. For example, terminal 2 receives the sensing signal sent by terminal 1 and obtains the sensing result, or terminal 1 receives the sensing signal sent by terminal 2 and obtains the sensing result.

[0066] In some embodiments, the signaling transmission between the radio access network device and the terminal, and between different terminals can be through Radio Resource Control (RRC) signaling, or Medium Access Control Control Element (MAC CE), or layer 1 signaling, or other newly defined sensing signaling; the signaling transmission between the sensing network function and the terminal can be through Non-Access-Stratum (NAS) signaling (forwarded by the AMF), or through RRC signaling, or MAC CE, or layer 1 signaling, or other newly defined sensing signaling; the interaction between the sensing network function and the base station can be forwarded to the radio access network by the AMF through the N2 interface; or the core network sensing network function sends to the UPF, and the UPF sends to the radio access network through the N3 interface; or sent to the radio access network (such as the base station) through a newly defined interface; the signaling transmission between radio access network devices can be through the Xn interface.

[0067] In some embodiments, the sensing network function can also be called the sensing network element or the Sensing Management Function (Sensing MF). It can be on the RAN side or the core network side. It refers to a network node in the core network or RAN that is responsible for at least one of the functions such as sensing request processing, sensing resource scheduling, sensing information interaction, and sensing data processing. It can be an upgrade based on the AMF or LMF in the mobile communication network, or other network nodes or newly defined network nodes. Specifically, the functional characteristics of the sensing network function / sensing network element can include at least one of the following:

[0068] Perform target information interaction with a wireless signal transmitting device or a wireless signal measuring device (including the target terminal, or the serving base station of the target terminal, or the base station associated with the target area), where the target information includes a sensing processing request, sensing capabilities, sensing auxiliary data, types of sensing measurement quantities, sensing resource configuration information, etc., to obtain the value of the target sensing result or sensing measurement quantity (uplink measurement quantity or downlink measurement quantity) sent by the wireless signal measuring device; where the wireless signal can also be referred to as a sensing signal.

[0069] Determine the sensing method to be used based on factors such as the type of sensing service, information of the sensing service consumer, required sensing Quality of Service (QoS) requirement information, sensing capabilities of the wireless signal transmitting device, sensing capabilities of the wireless signal measuring device, etc. The sensing method may include: wireless access network device A transmits and wireless access network device B receives, or the wireless access network device transmits and the terminal receives, or wireless access network device A transmits and receives by itself, or the terminal transmits and the wireless access network device receives, or the terminal transmits and receives by itself, or terminal A transmits and terminal B receives, etc.

[0070] Determine the sensing device for the sensing service based on factors such as the type of sensing service, information of the sensing service consumer, required sensing QoS requirement information, sensing capabilities of the wireless signal transmitting device, sensing capabilities of the wireless signal measuring device, etc., where the sensing device includes a wireless signal transmitting device or a wireless signal measuring device.

[0071] Manage the overall coordination and scheduling of resources required for the sensing service, such as performing corresponding configuration of the sensing resources of the wireless access network device or the terminal;

[0072] Perform data processing on the value of the sensing measurement quantity, or perform calculations to obtain the sensing result. And it is also possible to verify the sensing result, estimate the sensing accuracy, etc.

[0073] The following will, in conjunction with the accompanying drawings, through some embodiments and their application scenarios, provide a detailed description of a signal transmitting method, a signal measuring method, an apparatus, and a device provided by an embodiment of the present application.

[0074] Please refer to Figure 3 , Figure 3 which is a flowchart of a signal transmitting method provided by an embodiment of the present application. As Figure 3 shown, it includes the following steps:

[0075] Step 301, a first device transmits a target signal, and the target signal is used for measurement;

[0076] Wherein, the target signal includes M segments of chirp signals, and M is a positive integer greater than 1;

[0077] For two adjacent Chirp signals among the M Chirp signals, the start frequency of the latter Chirp signal is the stop frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

[0078] The first device described above can be a terminal or a network-side device.

[0079] The above-mentioned transmission of the target signal can be to send the target signal to a second device. The second device can be a terminal or a network-side device and can be measured by the second device. Alternatively, the first device measures the target signal, such as the first device's self-transmission and self-reception measurement.

[0080] The measurement of the above-mentioned target signal can include perception-related measurements or communication-related measurements, that is, the measurement results of the above-mentioned target signal include at least one of perception-related measurement results and communication-related measurement results. Among them, the above-mentioned perception-related measurement results can include the values of perception measurement quantities, and the above-mentioned communication-related measurements can include communication channel measurements or channel estimations. The above-mentioned communication-related measurement results can include at least one of the following:

[0081] Precoding Matrix Indicator (PMI), Rank indicator (RI), Channel Quality Indicator (CQI), Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Received Signal Strength Indication (RSSI), Signal to Noise Ratio (SNR), Signal to Interference plus Noise Ratio (SINR), bit error rate (BER), Block Error Rate (BLER), beam indication.

[0082] The perception performance or communication performance can be improved through the above-mentioned target signal.

[0083] For two adjacent Chirp signals among the M Chirp signals described above, the starting frequency of the latter Chirp signal being the ending frequency of the former Chirp signal can be understood as that, among two adjacent Chirp signals of the M Chirp signals, the starting frequency of the latter Chirp signal being the ending frequency of the former Chirp signal means that the M Chirp signals are continuous and non-overlapping in the frequency domain, that is, the starting frequency of each Chirp signal is the ending frequency of the previous Chirp signal, as represents the starting frequency of the i-th Chirp signal, represents the ending frequency of the (i - 1)-th Chirp signal.

[0084] The two adjacent Chirp signals described above can be any two adjacent Chirp signals, or a pair or multiple pairs of adjacent Chirp signals. That is, in some embodiments, it is also allowed that some pairs of adjacent Chirp signals do not satisfy the above relationship.

[0085] The different frequency modulation slopes of the two adjacent Chirp signals described above can be that the values of the frequency modulation slopes of the two adjacent Chirp signals are different. The specific values can be set according to actual requirements, or there is no limitation in this regard by protocol agreement, etc. In addition, the polarities of the frequency modulation slopes of the two adjacent Chirp signals can be the same or different, such as both being positive polarities, or both being negative polarities. Among them, when the polarities of the frequency modulation slopes of the two adjacent Chirp signals are both positive, it can be as Figure 4 shown. When the polarities of the frequency modulation slopes of the two adjacent Chirp signals are both negative, it can be as Figure 5 shown, where f 01 represents the ending frequency of the previous Chirp signal. Among them, Figure 4 and Figure 5 take M = 2 as an example for illustration. As Figure 4 or Figure 5 shown, the target signal contains two Chirp signals: the first Chirp signal and the second Chirp signal, where: the ending frequency of the first Chirp signal is equal to the starting frequency of the second Chirp signal, that is the bandwidth of the target signal

[0086] In some embodiments, the sum of the frequency modulation slopes of the first Chirp signal and the second Chirp signal can satisfy k0 + k1 = B / T Chirp , where T Chirp represents the duration of the first Chirp signal or the second Chirp signal.

[0087] In the embodiments of the present application, the above steps can be used to achieve measurement based on M-segment Chirp signals. Since Chirp signals have the characteristic of low peak-to-average ratio, sending the above target signals for measurement can reduce the peak-to-average ratio during measurement, thereby improving the measurement performance of the device.

[0088] In addition, for two adjacent Chirp signals in the M-segment Chirp signals, the starting frequency of the latter Chirp signal is the termination frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different. This can increase the flexibility of target signal design, reduce the interference between different target signals, and further improve the measurement performance.

[0089] In some embodiments, during the measurement process, the target signal is received and processed in the time domain mixing mode, which reduces the complexity of the receiving process and is beneficial to self-interference suppression.

[0090] As an optional embodiment, the generation expression of the i-th Chirp signal in the above M-segment Chirp signals can be as follows:

[0091]

[0092] where A0 is the amplitude, is the starting frequency of the i-th Chirp signal, k i = B i / T i or k i = -B i / T i represents the frequency modulation slope of the i-th Chirp signal, B i represents the bandwidth of the i-th Chirp signal, T i represents the duration of the i-th Chirp signal, and t is the time domain sampling point.

[0093] Alternatively, as an optional embodiment, the generation expression of the i-th Chirp signal in the above M-segment Chirp signals can be as follows:

[0094]

[0095] where θ i ∈[0, 2π] is the phase factor, which can be a constant phase value or a phase value determined according to a certain modulation rule.

[0096] In the embodiments of the present application, the value of i can be from 0 to M-1, that is, (0 ≤ i ≤ M-1), or the value of i can be from 1 to M, and this is not limited.

[0097] The i-th Chirp signal can represent each of the above-mentioned M Chirp signals. For example, the value range of i is from 0 to M - 1. Or in some embodiments, the i-th Chirp signal can also only represent some of the above-mentioned M Chirp signals.

[0098] As an alternative embodiment, the M Chirp signals have at least one of the following characteristics:

[0099] The sum of the bandwidths of the M Chirp signals is equal to the bandwidth of the target signal;

[0100] The polarities of the frequency modulation slopes of the M Chirp signals are the same;

[0101] The sum of the frequency modulation slopes of the M Chirp signals satisfies T i is the frequency modulation slope of the i-th Chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th Chirp signal, T Chirp is the sum of the durations of the M Chirp signals;

[0102] The sum of the durations of the M Chirp signals is equal to the duration of the target signal;

[0103] The durations of the M Chirp signals are the same;

[0104] The duration of each Chirp signal in the M Chirp signals is the same as the OFDM symbol duration, and the OFDM symbol includes a Cyclic Prefix (CP) or does not include a CP.

[0105] The sum of the bandwidths of the above-mentioned M Chirp signals being equal to the bandwidth of the target signal can be expressed as wherein, B i represents the bandwidth of the i-th Chirp signal, and B represents the bandwidth of the target signal.

[0106] The polarity of the frequency modulation slope of the above-mentioned M Chirp signals refers to that the polarity of the frequency modulation slope means that the positive and negative polarities of the frequency modulation slope are the same, that is, the polarities of the frequency modulation slopes of each Chirp signal are the same. For example, k i > 0, i = 0, 1,..., M - 1, that is, the slopes of the M Chirp signals are all greater than 0), or, k i < 0, i = 0, 1,..., M, that is, the slopes of the M Chirp signals are all less than 0. Wherein, k irepresents the frequency modulation slope of the i-th segment of the Chirp signal. It should be noted that this indicates that the polarities of the frequency modulation slopes are the same, while the values of the frequency modulation slopes of the M segments of the Chirp signal can be different.

[0107] In one of the above optional embodiments, since the polarities of the frequency modulation slopes of the above M segments of the Chirp signal are the same, this can reduce the complexity of the target signal, thereby reducing the complexity of measurement.

[0108] The sum of the frequency modulation slopes of the above M segments of the Chirp signal satisfies This can make the frequency modulation slopes of the M segments of the Chirp signal related to the bandwidth of the target signal, the duration of the i-th segment of the Chirp signal, or the average duration of the M segments of the Chirp signal, so as to improve the cross-correlation performance between the M segments of the Chirp signal, and further reduce interference.

[0109] That the sum of the durations of the above M segments of the Chirp signal is equal to the duration of the target signal can be expressed as where T is the duration of the target signal.

[0110] That the durations of the above M segments of the Chirp signal are the same can be expressed as T i = T Chirp , i = 0, 1,..., M - 1.

[0111] Among them, in the case where the above OFDM symbol includes CP, it can be expressed as T Chirp = T OFDM + T CP , and in the case where the above OFDM symbol does not include CP, it can be expressed as T Chirp = T OFDM .

[0112] As Figure 4 or Figure 5 shown, the target signal occupies two OFDM symbols in the time domain, T = 2T Chirp , and the duration of each segment of the Chirp signal is the same as the duration of the OFDM symbol (including CP). It can also be that the duration of each segment of the Chirp signal is the same as the duration of the OFDM symbol (excluding CP), and then a CP is added in front of the first signal, and the total duration after adding the CP is equal to the duration of two OFDM symbols (including CP).

[0113] Among them, in the case where the duration of each segment of the Chirp signal is the same as the duration of the OFDM symbol including CP, this can make the duration of each segment of the Chirp signal longer to transmit more information.

[0114] When the duration of each Chirp signal segment is the same as the duration of an OFDM symbol without CP, it is possible to add CP to each Chirp signal segment after time-domain resource mapping. Since adding CP can reduce inter-symbol interference of OFDM symbols, the transmission reliability of the target signal can be improved.

[0115] It should be noted that the above M Chirp signal segments have at least one of the following characteristics, which means that in one of the above optional embodiments, only a part of the above M Chirp signal segments that satisfy at least one of the above characteristics is satisfied, and it is not required to satisfy all of them. For example: as Figure 6 shown, the total duration of the M Chirp signal segments is the same as the duration of the OFDM symbol.

[0116] As an optional embodiment, the first parameter of at least one of the M Chirp signal segments is associated with the target information, and the target information includes at least one of the following:

[0117] Perception information, time-domain resource information, frequency-domain resource information, antenna port index, number of antenna ports, code division multiplexing CDM group index, number of CDM groups, antenna index, number of antennas, codeword index.

[0118] The above at least one Chirp signal segment can represent all or part of the above M Chirp signal segments.

[0119] In some embodiments, the first parameter of the above at least one Chirp signal segment includes at least one of the following:

[0120] Frequency modulation slope, starting frequency point, ending frequency point, bandwidth.

[0121] The association between the first parameter of the above at least one Chirp signal segment and the target information can be understood as that the first parameter of the above at least one Chirp signal segment is determined according to the above target information, which can make the first parameter of the target signal more matched with the target information.

[0122] The above perception information can include at least one of the following:

[0123] Perception area identifier, identifier for indicating whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, label (Tag) identifier associated with the perception target, number of perception targets, device information participating in perception measurement.

[0124] Among them, the above device information can be a device identifier, such as the cell identifier or terminal identifier of the device participating in perception measurement, such as a Radio Network Temporary Identifier (RNTI).

[0125] In the above optional implementation, since the first parameter is associated with the sensing information, at least one of the frequency modulation slope, the starting frequency point, the ending frequency point, or the bandwidth can be matched with the sensing information, thereby making the target more matched with the sensing to improve the sensing performance.

[0126] The above time-domain resource information may include one of the following:

[0127] Wireless frame index, sub-frame index, slot index, symbol index, duration, time-domain density, cyclic prefix CP type, CP length, coherent processing time window index, number of coherent processing time windows.

[0128] Among them, the wireless frame index and the sub-frame index may be the wireless frame index and the sub-frame index defined by the communication system, or the wireless frame index and the sub-frame index may be the relative wireless frame index and sub-frame index within the sensing coherent processing time window / sensing resource block;

[0129] The slot index may be the slot index within the wireless frame, or the slot index within the coherent processing time window / sensing resource block;

[0130] The symbol index may be the symbol index within the slot, or the symbol index within the coherent processing time window / sensing resource block.

[0131] The above coherent processing time window, that is, the time window for calculating the sensing measurement result each time (for example, the time-domain resource length corresponding to the range-Doppler map obtained by performing two-dimensional FFT operation), may include multiple slots / symbols.

[0132] The above frequency-domain resource information may include at least one of the following:

[0133] Resource Element (RE) index, Resource Block (RB) index, frequency point information, frequency band information, bandwidth, frequency-domain density, subcarrier spacing, sensing resource block index; among them, the sensing resource block includes multiple Physical Resource Blocks (PRBs) and multiple slots / symbols, that is, it includes specific time-frequency domain resources, such as the frequency-domain resource length and the time-domain resource length corresponding to the range-Doppler map obtained by performing two-dimensional FFT operation.

[0134] The index of the above Chirp signal i is the index i when the Chirp signal i is the target signal.

[0135] The above antenna index may be an antenna group index, a sub-array index, or an antenna panel index, and the number of antennas may be the number of antenna groups, the number of sub-arrays, or the number of antenna panels.

[0136] In the above-mentioned optional implementation manner, since the first parameter is associated with the target information, the first parameter of the Chirp signal i can be made more matched with the target information, such as improving the transmission performance of the target signal.

[0137] The following uses an example to illustrate the frequency modulation slope, start frequency point, stop frequency point, or bandwidth of the first Chirp signal and the second Chirp signal. In the embodiments of the present application, the first Chirp signal can be understood as the previous Chirp signal of two adjacent Chirp signals, and the second Chirp signal can be understood as the subsequent Chirp signal of two adjacent Chirp signals, or applied to the scenario where M is 2. Specifically as follows:

[0138] For example: The frequency modulation slope, start frequency point, stop frequency point, or bandwidth of the first Chirp signal and the second Chirp signal are associated with the port index n and n ID associated, n ID = 0, 1, 2, …, N ID - 1 can be the sensing area ID or sensing service ID in the target information. Then, the frequency modulation slope of the first Chirp signal in the target signal corresponding to port n (n = 0, 1, …, N - 1) is:

[0139]

[0140] The frequency modulation slope of the second Chirp signal is:

[0141]

[0142] Or, the frequency modulation slope of the first Chirp signal in the target signal corresponding to port n (n = 0, 1, …, N - 1) is:

[0143]

[0144] The frequency modulation slope of the second Chirp signal is:

[0145]

[0146] The above formulas are for illustrative purposes. The calculation of the frequency modulation slope, stop frequency, start frequency, and bandwidth of the first Chirp signal and the second Chirp signal and the target information can also satisfy other formula relationships or specific mapping rules.

[0147] Regarding the information related to sensing in the target information, it can include the following:

[0148] The sensing area represented by the sensing area identifier is the target area to be sensed. The sensing area can be pre-divided, and the division methods can include the following:

[0149] The coverage areas (cells) of multiple base stations form a sensing area, which is associated with a sensing area identifier n areaID , such as Figure 7 shown, each hexagonal area represents the coverage area of a base station, and the areas with the same number represent the same sensing area. In particular, the RAN-based notification area (RNA) can be used as a sensing area, and the RNA ID can be used as the sensing area identifier.

[0150] Alternatively, the coverage area (cell) of a single base station contains multiple sensing areas, which are associated with multiple sensing area identifiers. For example, with the base station as the origin, its coverage range is rasterized into multiple sensing areas, and each area is associated with a region ID denoted as n areaID , such as Figure 8 , the dotted line represents the coverage area of the base station, and each square represents the divided sensing area.

[0151] Alternatively, it can also be to directly generate the region ID n using a geographical area identifier such as longitude and latitude or coordinate position that has nothing to do with the position of the base station areaID .

[0152] Alternatively, different region IDs n can be associated with different angular ranges relative to the base station areaID , for example, the azimuth angle x1° to x2° and the elevation angle y1° to y2° correspond to the sensing area ID1.

[0153] Generated based on the identifier indicating whether it is used for sensing, or a specific sensing service identifier, or a sensing service type identifier, including:

[0154] Based on the identifier indicating whether it is used for sensing, when it is not used for sensing n sensingID = 0; when it is used for sensing n sensingID = 1.

[0155] Or, based on a specific sensing service identifier, for example, different sensing services correspond to different sensing service IDs sensingID .

[0156] Among them, for example, the sensing services can be the following:

[0157] Detecting the presence of a target, positioning, speed detection, distance detection, angle detection, acceleration detection, material analysis, composition analysis, shape detection, category classification, Radar Cross Section (RCS) detection, polarization scattering characteristic detection, fall detection, intrusion detection, quantity statistics, indoor positioning, gesture recognition, lip reading recognition, gait recognition, expression recognition, face recognition, breathing monitoring, heart rate monitoring, pulse monitoring, humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environment reconstruction, terrain and landform, building / vegetation distribution detection, pedestrian or vehicle flow detection, crowd density / vehicle density detection, etc.

[0158] It can also be an identifier of the sensing service type, and different categories correspond to different sensing service IDs n sensingID , for example, dividing the sensing function or service type by scope and scale, for example:

[0159] The first category (short distance / small range): material analysis, composition analysis, gesture recognition, lip reading recognition, gait recognition, expression recognition, face recognition, breathing monitoring, heart rate monitoring, pulse monitoring, etc.;

[0160] The second category (medium distance / medium range): intrusion detection, quantity statistics, indoor positioning, etc.;

[0161] The third category (long distance / large range): humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environment reconstruction, terrain and landform, building / vegetation distribution detection, pedestrian or vehicle flow detection, etc.

[0162] There can also be other classification criteria, for example: classified by function into positioning type sensing, imaging type sensing, pattern recognition type sensing, etc.; or classified into detection type sensing services (such as including intrusion detection, fall detection), parameter estimation type sensing services (distance, angle, speed calculation), recognition type sensing services (action recognition, identity recognition), etc.; or classified into, for example, target detection and tracking type sensing services (including whether the target exists, target ranging / ranging / angle measurement / localization / trajectory tracking), environmental monitoring type sensing services (including rainfall detection, flood monitoring,), action detection type sensing services (including gesture / action recognition, breathing / heartbeat detection, fall detection), etc.; it can also be divided according to power consumption / energy consumption, resource occupancy, etc.

[0163] It can also be generating a sensing signal according to the measurement quantity identifier, that is, at least one of the sensing measurement quantities is associated with a measurement quantity identifier, as shown in Table 2:

[0164] Table 2:

[0165] Measurement Quantity ID Perceived Measurement Quantity ID1 Time Delay / Distance ID2 Doppler / Velocity ID3 Angle ID4 Time Delay / Distance, Doppler / Velocity ID4 Time Delay / Distance, Doppler / Velocity, Angle … …

[0166] Among them, the above-mentioned perception measurement quantities can be classified into the following types:

[0167] The first-level measurement quantities (also known as received signals / original channel information) include at least one of the following:

[0168] Received signal / channel response complex results, amplitude / phase, I-channel / Q-channel and their related operation results (operations include addition, subtraction, multiplication, division, matrix addition, subtraction, multiplication, matrix transpose, trigonometric relation operations, square root operations, and power operations, etc., as well as threshold detection results and maximum / minimum value extraction results of the above operation results; among them, operations also include Fast Fourier Transform (FFT) / Inverse Fast Fourier Transform (IFFT), Discrete Fourier Transform (DFT) / Inverse Discrete Fourier Transform (IDFT), 2D-FFT, 3D-FFT, matched filtering, autocorrelation operations, wavelet transforms, and digital filtering, etc., as well as threshold detection results and maximum / minimum value extraction results of the above operation results;

[0169] The second-level measurement quantities (also known as basic measurement quantities) include at least one of the following: time delay, Doppler, angle, intensity, and their multi-dimensional combined representations;

[0170] The third-level measurement quantities (also known as basic attributes / status) include at least one of the following: distance, speed, orientation, spatial position, acceleration;

[0171] The fourth-level measurement quantities (also known as advanced attributes / status) include at least one of the following: whether the target exists, trajectory, action, expression, vital signs, quantity, imaging results, weather, air quality, shape, material, composition.

[0172] Determination based on the perception target identifier (or the Tag identifier associated with the perception target) can include the following methods:

[0173] The signal sending device obtains the identifier of the perception target, and different perception targets correspond to different perception target IDs n targetID, where the determination of the sensing target can be based on prior information obtained from existing measurement results. For example, base station A sends a sensing measurement signal through an omnidirectional beam for preliminary measurement, and base station A obtains a range-Doppler map (or a range-angle map, etc.), determines the number of targets according to the range-Doppler map, and assigns an ID to each target; alternatively, base station A sends a sensing measurement signal through an omnidirectional beam for preliminary measurement, and a receiving device (such as another base station or a terminal) obtains a range-Doppler map (or a range-angle map, etc.), determines the number of targets according to the range-Doppler map, and assigns an ID to each target, and then notifies the target ID or target-related information to the sending base station.

[0174] After the signal sending device determines the ID of each target, it generates signals for sensing different targets according to different target IDs, and these sensing signals are sent using different beams, and the beam directions point to the sensing targets associated with the target IDs;

[0175] For the sensing target equipped with a Tag, and different Tags are associated with different Tag IDs, the sending device obtains the Tag ID of the corresponding target, and then obtains the signals for sensing different targets. The Tag can be a device that supports backscatter communication, and its excitation source can be a device other than the tag, or the excitation source is the tag itself. It can also be a terminal, that is, a general transceiver module is installed on the sensing target, such as a communication device such as a vehicle terminal is installed on a car.

[0176] It can also be an identifier of the sensing target type, and different types correspond to different sensing target IDs. For example, they are divided into stationary targets and moving targets, and the latter can be further divided into high-speed targets and low-speed targets, and different types of targets correspond to different n targetID .

[0177] As an alternative implementation, the sending of the target signal by the first device includes:

[0178] The first device sends the target signal through multiple antenna ports, where the frequency modulation slopes of the target signals sent by different antenna ports are different.

[0179] Among them, different antenna ports send different target signals, and different target signals can be that at least one segment of the Chirp signal included in the target signal has a different slope. For example: the target signals sent by different ports occupy the same time-frequency resources, and the slopes of the Chirp signals of the target signals sent by different ports are different, such as the slopes of each segment of Chirp are different. Specifically, it can be as follows:

[0180] Among them, represents the frequency modulation slope of the i-th segment of the Chirp signal in the target signal sent by the n1 port, It represents the frequency modulation slope of the j-th segment of the Chirp signal in the target signal transmitted by the n2 port. Among them, n1≠n2, and i = j or i≠j.

[0181] Among them, the difference in the above frequency modulation slopes includes the difference in the absolute value of the frequency modulation slope or the polarity of the frequency modulation slope.

[0182] In this embodiment, it is possible to support multi-port signal transmission for the target signal, and there is good cross-correlation performance between signals of different ports, reducing interference between terminals.

[0183] Optionally, the time domain or frequency domain resources occupied by the target signals transmitted by different antenna ports among the multiple antenna ports are the same.

[0184] In this embodiment, it is possible to make the time domain or frequency domain resources occupied by the target signals transmitted by different antenna ports the same, so as to save resource overhead.

[0185] Optionally, the difference in the frequency modulation slopes of the target signals transmitted by different antenna ports includes at least one of the following:

[0186] The frequency modulation slopes of the h-th segment of the Chirp signal in the target signals transmitted by different antenna ports are different;

[0187] The frequency modulation slope of the h-th segment of the Chirp signal in the target signal transmitted by one antenna port among the multiple antenna ports is different from the frequency modulation slope of the j-th segment of the Chirp signal in the target signals transmitted by other antenna ports;

[0188] Among them, h is a positive integer less than or equal to M, j is a positive integer less than or equal to M, and j is not equal to h.

[0189] The fact that the frequency modulation slopes of the h-th segment of the Chirp signal in the target signals transmitted by different antenna ports are different means that the frequency modulation slopes of the Chirp signal segments with the same index or sequence in different antenna ports are different. For example: the frequency modulation slope of the first segment of the Chirp signal in the target signal corresponding to antenna port A is different from the frequency modulation slope of the first segment of the Chirp signal in the target signal corresponding to port B, and the frequency modulation slope of the second segment of the Chirp signal in the target signal corresponding to antenna port A is different from the frequency modulation slope of the second segment of the Chirp signal in the target signal corresponding to port B. Among them, port A and port B are different ports.

[0190] The difference in the frequency modulation slope of the h-th segment of the Chirp signal of the target signal transmitted by one antenna port among the multiple antenna ports and the frequency modulation slope of the j-th segment of the Chirp signal of the target signal transmitted by other antenna ports means that the frequency modulation slopes of the Chirp signal segments with different indexes or sequences in the target signals transmitted by different antenna ports are different. For example: the frequency modulation slope of the first segment of the Chirp signal in the target signal corresponding to port A is different from the frequency modulation slope of the second segment of the Chirp signal in the target signal corresponding to port B. Or, the frequency modulation slope of the second segment of the Chirp signal in the target signal corresponding to port A is different from the frequency modulation slope of the first segment of the Chirp signal in the target signal corresponding to port B.

[0191] In some embodiments, it can be designed such that the frequency modulation slope of the Chirp signal is associated with the number of ports or the port index; or the termination frequency or the start frequency of the Chirp signal is associated with the number of ports or the port index; or the bandwidth of the Chirp signal is associated with the number of ports or the port index. For example: the magnitudes of the frequency modulation slopes of the first segment of the Chirp signal and the second segment of the Chirp signal can be in different value ranges, so that the frequency modulation slopes of the first segment of the Chirp signal and the second segment of the Chirp signal in the target signal transmitted by the same port are different; the values of the frequency modulation slopes of the first segment of the Chirp signal and the second segment of the Chirp signal in the target signals transmitted by different ports are different, so that the frequency modulation slopes of the first segment of the Chirp signal in the target signals corresponding to different ports are not the same, and the frequency modulation slopes of the second segment of the Chirp signal in the target signals transmitted by different ports are not the same.

[0192] In the above embodiments, due to the difference in the frequency modulation slope of the h-th segment of the Chirp signal of the target signal transmitted by different antenna ports, or the difference in the frequency modulation slope of the h-th segment of the Chirp signal of the target signal transmitted by one antenna port among the multiple antenna ports and the frequency modulation slope of the j-th segment of the Chirp signal of the target signal transmitted by other antenna ports, this can make the first signals of different ports have good cross-correlation characteristics.

[0193] Optionally, the absolute values of the frequency modulation slopes of the target signals transmitted by different antenna ports are evenly distributed within the same value range, and the absolute values or polarities of the frequency modulation slopes of the target signals transmitted by different antenna terminals are different.

[0194] Among them, the above value range can be agreed upon by the protocol or configured by the network side, or determined by the above first device.

[0195] For example: the absolute values of the frequency modulation slopes of the Chirp signals in the target signals between different ports are evenly distributed in the interval.

[0196] For the target signal between different ports, the Chirp signal can adopt different polarities, and the FM slope can be different. The FM slope of the Chirp in the target signal between different ports can be positive or negative. For example, when the FM slope is positive, the starting frequency of the first segment of the Chirp signal is f start , and the ending frequency of the second segment of the Chirp signal is f end ; when the FM slope is negative, the starting frequency of the first segment of the Chirp signal is f end , and the ending frequency of the second segment of the Chirp signal is f start , and the design can be as follows:

[0197] For the target signal corresponding to port n (n = 0, 1, …, N - 1), the FM slope of the first segment of the Chirp signal is:

[0198]

[0199] The FM slope of the second segment of the Chirp signal is:

[0200]

[0201] Since the absolute values of the FM slopes of the target signals sent by different antenna ports are uniformly distributed within the same value range, and the absolute values of the FM slopes of the target signals sent by different antenna terminals are different in magnitude or different in polarity, this can make the target signals sent by different ports have good autocorrelation characteristics, and the target signals sent by different ports have good cross-correlation characteristics with each other. Among them, taking the total number of ports N = 4 as an example, the autocorrelation characteristics of the target signals sent by different ports are as Figure 9 shown, and the cross-correlation characteristics are as Figure 10 shown.

[0202] Optionally, the absolute values of the FM slopes of the target signals sent by different antenna ports are uniformly distributed in different value ranges, and the absolute values of the FM slopes of the target signals sent by different antenna terminals are different in magnitude or different in polarity.

[0203] Among them, the above value range can be agreed upon by the protocol or configured by the network side, or determined by the above first device.

[0204] The fact that the absolute values of the FM slopes of the target signals sent by different antenna ports are uniformly distributed in different value ranges can be that the FM slope of the first segment of the Chirp signal is always less than the FM slope of the second segment of the Chirp signal, or the FM slope of the first segment of the Chirp signal is always greater than the FM slope of the second segment of the Chirp signal).

[0205] Among the target signals sent from the above different ports, the Chirp signal can adopt different polarities, and the frequency modulation slope can be positive or negative. When the frequency modulation slope is positive, the starting frequency of the first segment of the Chirp signal is f start , and the ending frequency of the second segment of the Chirp signal is f end . When the frequency modulation slope is negative, the starting frequency of the first segment of the Chirp signal is f end , and the ending frequency of the second segment of the Chirp signal is f start . Then the following design can be adopted:

[0206] For the target signal sent from port n (n = 0, 1, …, N - 1), the frequency modulation slope of the first segment of the Chirp signal is:

[0207]

[0208] The frequency modulation slope of the second segment of the Chirp signal is:

[0209]

[0210] where, denotes rounding down x.

[0211] In addition to the frequency modulation slope, the ending frequency of the first segment of the Chirp signal / the starting frequency of the second segment of the Chirp signal, or the bandwidth of the first segment of the Chirp signal / the second segment of the Chirp signal can also be used to represent the characteristics of the target signals sent from different ports. For example:

[0212] For the target signal sent from port n (n = 0, 1, …, N - 1), the ending frequency of the first segment of the Chirp signal or the starting frequency of the second segment of the Chirp signal is:

[0213]

[0214] For the target signal sent from port n (n = 0, 1, …, N - 1), the bandwidth of the first segment of the Chirp signal is

[0215] The bandwidth of the second segment of the Chirp signal is

[0216] Alternatively, the absolute value of the frequency modulation slope of the first Chirp signal of the target signal transmitted by each port is always less than or equal to the absolute value of the frequency modulation slope of the second Chirp signal, that is, the absolute value ranges of the two are different numerical intervals. At the same time, the absolute value or polarity of the frequency modulation slope of the first Chirp signal and the second Chirp signal of the target signals transmitted by different ports are also different within their respective value ranges, thereby ensuring the cross-correlation characteristics between signals of different ports.

[0217] Or it can also be that the frequency modulation slope of the first Chirp signal is always greater than or equal to the frequency modulation slope of the second Chirp signal, such as:

[0218] For the target signal transmitted by port n (n = 0, 1, …, N−1), the frequency modulation slope of the first Chirp signal is The frequency modulation slope of the second Chirp signal is

[0219] Wherein, represents rounding down x.

[0220] Alternatively, if the Chirp signals in the target signals transmitted by different ports all use the same polarity frequency modulation slope, the following design can be adopted:

[0221] The frequency modulation slopes of the Chirp signals in the target signals transmitted by different ports are all positive. At this time, the starting frequency of the first Chirp signal is f start , and the ending frequency of the second Chirp signal is f end , such as:

[0222] For the target signal transmitted by port n (n = 0, 1, …, N−1), the frequency modulation slope of the first Chirp signal is The frequency modulation slope of the second Chirp signal is

[0223] Or, the frequency modulation slopes of the Chirp signals in the target signals transmitted by different ports are all negative. At this time, the starting frequency of the first Chirp signal is f end , and the ending frequency of the second Chirp signal is f start , such as:

[0224] For the target signal transmitted by port n (n = 0, 1, …, N−1), the frequency modulation slope of the first Chirp signal is The frequency modulation slope of the second Chirp signal is

[0225] If the Chirp signals in the target signals sent from different ports can adopt different polar FM slopes, that is, the FM slopes of the Chirp signals in the target signals sent from different ports can be positive or negative. When the FM slope is positive, the starting frequency of the first segment of the Chirp signal is f start , and the ending frequency of the second segment of the Chirp signal is f end ; when the FM slope is negative, the starting frequency of the first segment of the Chirp signal is f end , and the ending frequency of the second segment of the Chirp signal is f start , then the following design can be adopted:

[0226] For the target signal sent from port n (n = 0, 1, …, N - 1), the FM slope of the first segment of the Chirp signal is:

[0227]

[0228] The FM slope of the second segment of the Chirp signal is:

[0229]

[0230] Wherein, represents rounding down x.

[0231] In some embodiments, the FM slope of the first segment of the Chirp signal is always less than the FM slope of the second segment of the Chirp signal, that is, the absolute value of the FM slope of the first segment of the Chirp signal is uniformly distributed between , and the absolute value of the FM slope of the second segment of the Chirp signal is uniformly distributed between ; or it can also be that the FM slope of the first segment of the Chirp signal is always greater than or equal to the FM slope of the second segment of the Chirp signal, that is, the absolute value of the FM slope of the first segment of the Chirp signal is uniformly distributed between , and the absolute value of the FM slope of the second segment of the Chirp signal is uniformly distributed between , that is, in the above slope generation formula, the FM slope generation formulas of the first segment of the Chirp signal and the second segment of the Chirp signal are interchanged.

[0232] Since the absolute values of the FM slopes of the target signals sent from different antenna ports are uniformly distributed in different value ranges respectively, and the absolute values of the FM slopes of the target signals sent from different antenna terminals are different in size or different in polarity, this can make the target signals sent from different ports have good autocorrelation characteristics, and the target signals sent from different ports have good cross-correlation characteristics with each other. Among them, taking the total number of ports N = 4 as an example, the autocorrelation characteristics of the target signals sent from different ports are as shown in Figure 11 or 12, and the cross-correlation characteristics are as shown inFigure 13 as shown in Fig. 14

[0233] For comparison Figure 15 the autocorrelation and cross-correlation results of the reference signal of the randomly generated gold sequence modulated by Quadrature Phase Shift Keying (QPSK) are given. Through Figures 8 to 15 comparison, it can be seen that the above target signals all have good autocorrelation characteristics and cross-correlation characteristics. At the same time, compared with the reference signal design based on the gold sequence, they have a lower peak-to-average ratio, and can be received and detected by means of time-domain mixing, and the processing method is simpler and is conducive to self-interference cancellation in the radio frequency domain.

[0234] In some embodiments, when the target signal is sent using signals from multiple antenna ports, both the transmitter and the receiver can calculate the chirp signal frequency modulation slope characteristics of the target signals sent from different antenna ports according to a formula, and then determine the target signals sent from different antenna ports; or directly obtain the mapping relationship between different ports and the frequency modulation slope, termination frequency, start frequency or bandwidth of the chirp signal, and then determine the target signals sent from different antenna ports.

[0235] As an optional embodiment, the target signal is time-division multiplexed with other signals, and the other signals are signals different from the target signal in the OFDM system.

[0236] In this embodiment, the target signal and other signals can be sent by time-division multiplexing, which can make the target signal better compatible with the OFDM system.

[0237] As an optional embodiment, the second parameter of the target signal is associated with the sensing requirement information, and the second parameter includes at least one of the following:

[0238] transmission period, time interval, bandwidth, duration, number of the target signals, total duration of the target signals sent by the first device.

[0239] Among them, the number of the above target signals can be the total number of target signals sent by the first device, or the number of target signals sent by the same antenna port.

[0240] In some embodiments, the target signal supports at least one of periodic transmission, semi-persistent transmission, and aperiodic transmission. When the target signal is used for sensing, the transmission period of the target signal, for aperiodic transmission, the time interval △T between two adjacent first signals in the time domain, bandwidth, duration, number of target signals X, total duration of X target signals, etc. are associated with the sensing requirements.

[0241] Among them, the above-mentioned perception requirement information may be sent by the network-side device to the first device or the second device.

[0242] The association between the second parameter of the above-mentioned target signal and the perception requirement information can be understood as that the second parameter of the target signal is determined based on the perception requirement information, so that the second parameter of the target signal can match the perception requirement information, and further enable the target signal to meet the perception requirement, thereby improving the perception performance.

[0243] The above-mentioned perception requirement information may include at least one of the following:

[0244] Perception service or perception service type. The perception service may include at least one of the following: detecting whether a target exists, positioning, speed detection, distance detection, angle detection, acceleration detection, material analysis, component analysis, shape detection, category classification, RCS detection, polarization scattering characteristic detection, fall detection, intrusion detection, quantity statistics, indoor positioning, gesture recognition, lip reading recognition, gait recognition, expression recognition, face recognition, breathing monitoring, heart rate monitoring, pulse monitoring, humidity / brightness / temperature / atmospheric pressure monitoring, air quality monitoring, weather condition monitoring, environment reconstruction, terrain and landform, building / vegetation distribution detection, pedestrian or vehicle flow detection, crowd density, vehicle density detection, etc.; The perception service type may classify multiple different perception services according to certain characteristics. For example, it is classified into detection-type perception services (such as intrusion detection, fall detection), parameter estimation-type perception services (distance, angle, speed calculation), recognition-type perception services (action recognition, identity recognition), etc. according to function; or it is classified into, for example, target detection and tracking-type perception services (including whether a target exists, target ranging / ranging / angle measurement / localization / trajectory tracking), environment monitoring-type perception services (including rainfall detection, flood monitoring), action detection-type perception services (including gesture / action recognition, breathing / heartbeat detection, fall detection), etc. It can also be classified according to the perception range (close-range perception, medium-range perception, long-range perception), according to the perception fineness (coarse-grained perception, fine-grained perception, etc.), according to the perception scenario (indoor, outdoor, home, factory, road, etc.), according to power consumption / energy consumption, according to resource occupancy, etc.

[0245] The perception target area may refer to the area where the perception object may exist, or the area where imaging or environment reconstruction needs to be performed.

[0246] The perception object type may classify the perception object according to the possible motion characteristics of the perception object. Each perception object type contains information such as the motion speed, motion acceleration, and typical RCS of the typical perception object.

[0247] Perceived QoS can be a performance metric for perceiving a target area or object to be perceived, including at least one of the following:

[0248] Perceived resolution, which can be classified into: ranging resolution, angle measurement resolution, velocity measurement resolution, imaging resolution, etc.;

[0249] Perceived accuracy, which can be classified into: ranging accuracy, angle measurement accuracy, velocity measurement accuracy, positioning accuracy, etc.;

[0250] Perceived range, which can be classified into: ranging range, velocity measurement range, angle measurement range, imaging range, etc.;

[0251] Perceived latency, such as the time interval from the transmission of a perception signal to obtaining a perception result, or the time interval from the initiation of a perception requirement to obtaining a perception result;

[0252] Perceived update rate, such as the time interval between two adjacent executions of perception and obtaining a perception result;

[0253] Detection probability, such as the probability of being correctly detected when the object to be perceived exists;

[0254] False alarm probability, such as the probability of erroneously detecting a perception target when the object to be perceived does not exist;

[0255] The maximum number of targets that can be perceived.

[0256] In some embodiments, at least one of the above-mentioned transmission period, time interval, bandwidth, duration, the number of target signals, and the total duration of the target signals sent by the first device may also be agreed upon by the protocol or configured by the network side.

[0257] As an alternative embodiment, when the first device sends multiple target signals, the time interval between adjacent target signals among the multiple target signals meets the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement;

[0258] Or,

[0259] The total duration of the target signals sent by the first device meets the Doppler resolution requirement or the velocity resolution requirement;

[0260] Or,

[0261] The bandwidth of the target signal meets the latency resolution requirement or the distance resolution requirement.

[0262] For the periodic transmission of target signals, the above-mentioned time interval can also be understood as the transmission period of the target signals in the time domain.

[0263] The time interval between the adjacent target signals satisfying the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement may be that when used for sensing measurement, multiple target signals are required for joint measurement. The transmission period of the target signals in the time domain or the time interval △T between two adjacent Chirp signals in the time domain satisfies the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement. For example:

[0264] If considering the velocity direction, the time domain resource interval satisfies ΔT ≤ 1 / (2|f dmax |) or ΔT ≤ c / (4f c |v max |); if not considering the velocity direction, the time domain resource interval satisfies ΔT ≤ 1 / f dmax or ΔT ≤ c / (2f c v max ), where f dmax is the maximum unambiguous Doppler, v max is the maximum unambiguous velocity, f c is the carrier frequency, and c is the speed of light.

[0265] In the above optional implementation manner, since the time interval between two target signals satisfies the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement, the sensing performance can be improved.

[0266] The total duration of the target signals sent by the first device satisfying the Doppler resolution requirement or the velocity resolution requirement may refer to the total duration of multiple target signals sent by the first device satisfying the Doppler resolution requirement or the velocity resolution requirement. Among them, for monostatic radar sensing, it may be:

[0267] T ≥ 1 / Δf d or T ≥ c / (2f c Δv), where T represents the above total duration, Δf d is the Doppler resolution, and Δv is the velocity resolution;

[0268] In the above optional implementation manner, since the total duration of the target signals sent by the first device satisfies the Doppler resolution requirement or the velocity resolution requirement, the sensing performance can be improved.

[0269] The bandwidth of the target signals satisfies the time delay resolution requirement or the distance resolution requirement. For monostatic radar sensing, it may be:

[0270] B ≥ 1 / Δτ or B ≥ c / (2ΔR), where Δτ is the time delay resolution and ΔR is the distance resolution.

[0271] In one of the above optional embodiments, since the bandwidth of the target signal meets the time delay resolution requirement or the distance resolution requirement, the sensing performance can be improved.

[0272] As an optional embodiment, the method further includes:

[0273] The first device receives or sends indication information, and the indication information is used to indicate at least one of the following:

[0274] The configuration information of the target signal, the measurement configuration information, and the measurement assistance information.

[0275] The first device receiving the indication information may be the indication information sent by the second device or other devices.

[0276] The first device sending the indication information may be sending the indication information to the second device.

[0277] Among them, the configuration information of the above target signal may be information for configuring at least one Chirp signal segment in the target signal, or may be information for configuring the resources of the target signal or the information associated with the target signal.

[0278] In some embodiments, the configuration information of the above target signal includes at least one of the following:

[0279] The number of Chirp signal segments included in the target signal;

[0280] The frequency modulation slope information of at least one Chirp signal in the target signal;

[0281] The frequency domain resource information of at least one Chirp signal in the target signal;

[0282] The time domain resource information of at least one Chirp signal in the target signal;

[0283] The antenna port information of the target signal;

[0284] At least one of the target information, where the target information is information associated with the first parameter of at least one Chirp signal among the M Chirp signals.

[0285] For the above target information and the first parameter of at least one Chirp signal, please refer to the corresponding description in the above embodiments, and details are not described here.

[0286] The number of Chirp signal segments included in the above target signal is the value of the above M, such as the default M = 2 or other values.

[0287] At least one of the above Chirp signals may be all or part of the Chirp signal segments included in the target signal. For example, the frequency modulation slope information of at least one Chirp signal in the above target signal may include the frequency modulation slope information of at least one Chirp signal, or a list of the frequency modulation slopes of all Chirp signals.

[0288] Among them, the above frequency modulation slope information includes the absolute value of the frequency modulation slope or the polarity (positive or negative) of the frequency modulation slope; or it is the average value of the frequency modulation slopes of all Chirp signals, specifically as follows:

[0289]

[0290] Among them, B is the overall bandwidth of the target signal, that is, the length of the frequency domain resources of the target signal, and T is the duration of the target signal, that is, the length of the time domain resources of the target signal;

[0291] Or it is the sum of the frequency modulation slopes of all Chirp signals, specifically as follows:

[0292]

[0293] Alternatively, the frequency modulation slope information of at least one of the above Chirp signals may be a value directly indicating the slope, or may indicate its relationship with the average value of the frequency modulation slopes of all Chirp signals or the sum of the frequency modulation slopes of all Chirp signals. For example, the frequency modulation slope of the first Chirp signal is 1 / 5 of k sum and the frequency modulation slope of the second Chirp signal is 4 / 5 of k sum ; or it may also be the relationship between the frequency modulation slope of the first Chirp signal and the frequency modulation slope of the second Chirp signal, such as k0 / k1 = 1 / 4.

[0294] Since the frequency modulation slope information of at least one Chirp signal in the target signal is configured, the second device can determine the frequency modulation slope of the Chirp signal based on this information, so as to better measure the target signal and improve the measurement performance.

[0295] The frequency domain resource information of at least one Chirp signal in the above target signal may include the resource information occupied by at least one Chirp signal in the target signal, or may also include the frequency-related parameters of at least one Chirp signal.

[0296] In some embodiments, the above frequency domain resource information includes at least one of the following:

[0297] The start frequency of at least one Chirp signal in the target signal, the stop frequency of at least one Chirp signal in the target signal, and the bandwidth information of at least one Chirp signal in the target signal.

[0298] Among them, the start frequency or stop frequency information of the above at least one Chirp signal can be as Figure 4 shown as f 01 ;

[0299] The bandwidth information of at least one Chirp signal can be the actual size indicating the bandwidth of the Chirp signal, or can be the relationship indicating its relationship with the overall bandwidth of the first signal. For example, the bandwidth of the first Chirp signal accounts for 1 / 5 of the overall bandwidth, and the bandwidth of the second Chirp signal accounts for 4 / 5 of the overall bandwidth; or it can also be the relationship between the frequency modulation slope of the first Chirp signal and the bandwidth of the second Chirp signal, such as B0 / B1 = 1 / 4.

[0300] Since the indication information includes the above frequency domain resource information, this can enable the second device to measure the target signal more accurately and reliably based on the above time domain resource information, thereby improving the measurement performance.

[0301] The time domain resource information of at least one Chirp signal in the above target signal can indicate that the duration of each Chirp is equal to the OFDM symbol duration, or can also be equal to the duration of multiple OFDM symbols.

[0302] Since the indication information includes the above time domain resource information, this can enable the second device to measure the target signal more accurately and reliably based on the above time domain resource information, thereby improving the measurement performance.

[0303] The above antenna port information can include at least one of the following:

[0304] The mapping relationship between at least one antenna port and the frequency modulation slope;

[0305] The mapping relationship between at least one antenna port and the stop frequency;

[0306] The mapping relationship between at least one antenna port and the start frequency;

[0307] The mapping relationship between at least one antenna port and the bandwidth;

[0308] The calculation method of the frequency modulation slope corresponding to at least one antenna port;

[0309] The calculation method of the stop frequency corresponding to at least one antenna port;

[0310] The calculation method of the start frequency corresponding to at least one antenna port;

[0311] Calculation method for the bandwidth corresponding to at least one antenna port;

[0312] Total number of antenna ports;

[0313] Antenna port index information.

[0314] The above antenna port index information can be a port index list;

[0315] Since the indication information includes the above antenna port information, the second device can more accurately and reliably determine at least one of the frequency modulation slope, termination frequency, start frequency, or bandwidth of the target signal transmitted by the antenna port based on the above antenna port information. Therefore, measuring the target signal based on the determined parameters can improve the measurement performance.

[0316] In addition to the above at least one item, the configuration information of the above target signal may further include at least one of the following:

[0317] Signal resource identifier (ID), used to distinguish different signal resource configurations;

[0318] Signal usage, indicating that the signal is a signal for communication (such as channel measurement, channel estimation, synchronization, carrying data information, etc.), a signal for sensing, or a signal for both communication and sensing. Specifically, it can also be a signal for which sensing service or a signal for which type of sensing service.

[0319] Waveform, for example: Orthogonal Frequency Division Multiplexing (OFDM), Single-Carrier Frequency-Division Multiple Access (SC-FDMA), Orthogonal Time Frequency Space (OTFS), Chirp, Frequency Modulated Continuous Wave (FMCW), pulse signal, etc.;

[0320] Subcarrier spacing, for example, the subcarrier spacing of an OFDM system is 30 KHz.

[0321] Guard interval, which is the time interval between the moment when the signal ends transmission and the moment when the latest echo signal of the signal is received; this parameter is proportional to the maximum sensing distance; for example, it can be calculated by c / (2R max ) and R maxis the maximum sensing distance (belonging to sensing requirement information). For example, for a self - transmitting and self - receiving sensing signal, R max represents the maximum distance from the sensing signal transceiver point to the signal transmitting point; in some cases, the OFDM signal cyclic prefix (CP) can serve as the minimum guard interval; c is the speed of light.

[0322] The starting frequency - domain position, that is, the starting frequency point, can also be the starting RE or RB index;

[0323] The starting time - domain position, that is, the starting time point, can also be the starting symbol index, time - slot index, or frame index;

[0324] The ending frequency - domain position, that is, the ending frequency point, can be represented by the ending RE or RB index;

[0325] The ending time - domain position, that is, the ending time point, can be represented by the ending RE or RB index;

[0326] The frequency - domain resource length, that is, the frequency - domain bandwidth. The frequency - domain bandwidth is inversely proportional to the range resolution. The frequency - domain bandwidth B of each of the first signals satisfies B≥c / (2ΔR), where c is the speed of light and ΔR is the range resolution;

[0327] The time - domain resource length, also known as the burst duration. The time - domain resource length is inversely proportional to the Doppler resolution.

[0328] The frequency - domain resource interval represents the interval between adjacent signal frequency - domain resource units, which can be represented by the number of REs or RBs, or by the density value Density. For example, Density = 1 means that there is one RE in each RB for carrying the signal. The frequency - domain resource interval is inversely proportional to the maximum unambiguous range / delay. Among them, for an OFDM system, when the sub - carriers are continuously mapped, the frequency - domain interval is equal to the sub - carrier interval;

[0329] The time - domain resource interval is the time interval between two adjacent signal resource units. The time - domain resource interval is associated with the maximum unambiguous Doppler shift or the maximum unambiguous speed; it can also be the signal time - domain transmission period.

[0330] The time - domain resource characteristics: periodic transmission, semi - persistent transmission, non - periodic transmission.

[0331] The signal power, for example, taking a value every 2 dBm from - 20 dBm to 23 dBm.

[0332] The sequence information includes sequence type information (ZC sequence, PN sequence, etc.), sequence generation method, sequence length, etc.

[0333] The signal direction, that is, the angle information or beam information of the signal transmission.

[0334] QCL relationships. For example, the sensed signal includes multiple resources, and each resource has a quasi - co - location (QCL) relationship with a Synchronization Signal Block (SSB). QCL includes Type A, B, C, or D.

[0335] CP information, which may include the CP type or CP length, etc. Among them, the CP type may include a Normal Cyclic Prefix (NCP), an Extended Cyclic Prefix (ECP), or a newly designed CP dedicated for sensing measurement, etc.

[0336] The above - mentioned measurement configuration information includes at least one of the following:

[0337] An indication of the signal resources to be measured, such as a signal resource identifier (ID).

[0338] The number of signal resources to be measured;

[0339] Sensing measurement quantities;

[0340] Reporting configuration, that is, the criteria for the second device to report measurement results, including at least one of the time - frequency domain resource configuration for reporting, the reporting period, and the triggering events for reporting. Among them, the above - mentioned triggering events include at least one of the following:

[0341] An event of entering a specific area (such as a cell);

[0342] An event of reaching a specific time;

[0343] An event that a certain type of measurement signal reaches a certain threshold;

[0344] An event that the device moves more than some predefined (straight - line) distance from its previous position;

[0345] An event that the device's orientation changes by more than some predefined angle. The above - mentioned device orientation may refer to the orientation of components on the device, such as the orientation of antennas, sensors, etc.;

[0346] An event that the device's movement speed exceeds some predefined speed threshold;

[0347] An event that the environmental information (such as temperature / humidity / light intensity) measured by the device sensor changes by more than a certain range.

[0348] Through the above - mentioned measurement configuration information, the second device can better measure the target signal to improve the measurement performance.

[0349] The above - mentioned measurement assistance information may include at least one of the following:

[0350] The beam indication of the transmission beam, including at least one of the total number of transmission beams, the number of sensing beams, and the number of communication beams

[0351] The receiving beam indication, including the recommended receiving beam direction or the corresponding index to be adopted;

[0352] The location information of the first device, or the direction information of the first device relative to the second device;

[0353] The sensing requirement information.

[0354] Through the above measurement auxiliary information, the second device can better measure the target signal to improve the measurement performance.

[0355] It should be noted that at least one of the above indication information configurations can also be protocol - agreed or network - side configured.

[0356] In the embodiments of this application, the following several situations may be included:

[0357] Situation 1: Bistatic sensing. The first device transmits the target signal, and the second device receives the target signal and uses it for sensing measurement or communication (when the target signal is also used for communication channel measurement or demodulation);

[0358] Situation 2: Monostatic sensing. The first device transmits the target signal and simultaneously receives its echo signal for sensing. It also includes that the second device receives the target signal and uses it for communication (when the target signal is also used for communication channel measurement or demodulation).

[0359] Among them, the first device and the second device can be radio access network devices or terminals. The first device can obtain the sensing requirement information from the third device. After the first device and the second device obtain the sensing measurement results, they can send them to the third device. The third device can be a core network sensing network function or a sensing network element.

[0360] Among them, the signaling transmission between the radio access network device and the terminal, and between different terminals can be through Radio Resource Control (RRC) signaling, or Medium Access Control Control Element (MAC CE), or layer 1 signaling, or other newly defined sensing signaling; the signaling transmission between the sensing network function and the terminal can be through Non-Access-Stratum (NAS) signaling (forwarded by the AMF), or through RRC signaling, or MAC CE, or layer 1 signaling, or other newly defined sensing signaling; the interaction between the sensing network function and the base station can be forwarded to the radio access network by using the AMF through the N2 interface; or the core network sensing network function sends to the UPF, and the UPF sends to the radio access network through the N3 interface; or sends to the radio access network (such as the base station) through a newly defined interface; the signaling transmission between radio access network devices can be through the Xn interface.

[0361] In the embodiment of the present application, the first device sends a target signal for measurement; where the target signal includes M segments of Chirp signals, and M is a positive integer greater than 1; for two adjacent segments of Chirp signals among the M segments of Chirp signals, the starting frequency of the latter segment of Chirp signal is the ending frequency of the previous segment of Chirp signal, and the frequency modulation slopes of the two adjacent segments of Chirp signals are different. In this way, measurement can be realized based on the M segments of Chirp signals, and the Chirp signal has the characteristic of low peak-to-average ratio. Therefore, sending the above target signal for measurement can reduce the peak-to-average ratio during measurement to improve the measurement performance of the device. In addition, since for two adjacent segments of Chirp signals among the M segments of Chirp signals, the starting frequency of the latter segment of Chirp signal is the ending frequency of the previous segment of Chirp signal, and the frequency modulation slopes of the two adjacent segments of Chirp signals are different, this can increase the flexibility of target signal design to reduce the interference between different target signals and further improve the measurement performance.

[0362] Please refer to Figure 16 , Figure 16 is a flowchart of a signal measurement method provided by an embodiment of the present application. As Figure 16 shown, it includes the following steps:

[0363] Step 1601, the second device measures the target signal to obtain a measurement result;

[0364] where the target signal includes M segments of chirp Chirp signals, and M is a positive integer greater than 1;

[0365] For two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

[0366] Optionally, the M Chirp signals have at least one of the following characteristics:

[0367] The sum of the bandwidths of the M Chirp signals is equal to the bandwidth of the target signal;

[0368] The polarities of the frequency modulation slopes of the M Chirp signals are the same;

[0369] The sum of the frequency modulation slopes of the M Chirp signals satisfies T i is the frequency modulation slope of the i-th Chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th Chirp signal, T Chirp is the average duration of the M Chirp signals;

[0370] The sum of the durations of the M Chirp signals is equal to the duration of the target signal;

[0371] The durations of the M Chirp signals are the same;

[0372] The duration of each Chirp signal in the M Chirp signals is the same as the duration of an Orthogonal Frequency Division Multiplexing (OFDM) symbol, and the OFDM symbol may or may not include a Cyclic Prefix (CP).

[0373] Optionally, the first parameter of at least one Chirp signal among the M Chirp signals is associated with target information, and the target information includes at least one of the following:

[0374] Perception information, time domain resource information, frequency domain resource information, antenna port index, number of antenna ports, Code Division Multiplexing (CDM) group index, number of CDM groups, antenna index, number of antennas, codeword index.

[0375] Optionally, the first parameter of the at least one Chirp signal includes at least one of the following:

[0376] Frequency modulation slope, starting frequency point, ending frequency point, bandwidth.

[0377] Optionally, the perception information includes at least one of the following:

[0378] Perception area identifier, identifier indicating whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, label identifier associated with the perception target, number of perception targets, device information participating in perception measurement.

[0379] Optionally, the second device measures the target signal to obtain a measurement result, including:

[0380] The second device measures the target signal transmitted by the first device through multiple antenna ports to obtain a measurement result, where the frequency modulation slopes of the target signals transmitted by different antenna ports are different.

[0381] Optionally, the different frequency modulation slopes of the target signals transmitted by different antenna ports include at least one of the following:

[0382] The frequency modulation slopes of the h-th segment Chirp signals of the target signals transmitted by different antenna ports are different;

[0383] The frequency modulation slope of the h-th segment Chirp signal of the target signal transmitted by one antenna port among the multiple antenna ports is different from the frequency modulation slope of the j-th segment Chirp signal of the target signals transmitted by other antenna ports;

[0384] Where h is a positive integer less than or equal to M, j is a positive integer less than or equal to M, and j is not equal to h.

[0385] Optionally, the absolute values of the frequency modulation slopes of the target signals transmitted by different antenna ports are uniformly distributed within the same value range, and the absolute values or polarities of the frequency modulation slopes of the target signals transmitted by different antenna terminals are different; or,

[0386] The absolute values of the frequency modulation slopes of the target signals transmitted by different antenna ports are uniformly distributed within different value ranges, and the absolute values or polarities of the frequency modulation slopes of the target signals transmitted by different antenna terminals are different.

[0387] Optionally, the target signal is time-division multiplexed with other signals, and the other signals are signals different from the target signal in the OFDM system.

[0388] Optionally, the second parameter of the target signal is associated with the perception requirement information, and the second parameter includes at least one of the following:

[0389] Transmission period, time interval, bandwidth, duration, number of the target signals, total duration of the target signals transmitted by the first device.

[0390] Optionally, when the first device sends multiple target signals, the time interval between adjacent target signals among the multiple target signals meets the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement;

[0391] Or,

[0392] The total duration of the target signals sent by the first device meets the Doppler resolution requirement or the velocity resolution requirement;

[0393] Or,

[0394] The bandwidth of the target signal meets the time delay resolution requirement or the distance resolution requirement.

[0395] Optionally, the method further includes:

[0396] The second device sends or receives indication information, where the indication information is used to indicate at least one of the following:

[0397] The configuration information of the target signal, the measurement configuration information, and the measurement assistance information.

[0398] Optionally, the configuration information of the target signal includes at least one of the following:

[0399] The number of Chirp signal segments included in the target signal;

[0400] The frequency modulation slope information of at least one Chirp signal in the target signal;

[0401] The frequency domain resource information of at least one Chirp signal in the target signal;

[0402] The time domain resource information of at least one Chirp signal in the target signal;

[0403] The antenna port information of the target signal;

[0404] At least one of the target information, where the target information is the information associated with the first parameter of at least one Chirp signal among the M Chirp signals.

[0405] Optionally, the frequency domain resource information includes at least one of the following:

[0406] The start frequency of at least one Chirp signal in the target signal, the stop frequency of at least one Chirp signal in the target signal, and the bandwidth information of at least one Chirp signal in the target signal.

[0407] Optionally, the antenna port information includes at least one of the following:

[0408] Mapping relationship between at least one antenna port and frequency modulation slope;

[0409] Mapping relationship between at least one antenna port and termination frequency;

[0410] Mapping relationship between at least one antenna port and start frequency;

[0411] Mapping relationship between at least one antenna port and bandwidth;

[0412] Calculation method of frequency modulation slope corresponding to at least one antenna port;

[0413] Calculation method of termination frequency corresponding to at least one antenna port;

[0414] Calculation method of start frequency corresponding to at least one antenna port;

[0415] Calculation method of bandwidth corresponding to at least one antenna port;

[0416] Total number of antenna ports;

[0417] Antenna port index information.

[0418] It should be noted that, as an implementation manner of the second device corresponding to the Figure 3 shown in the embodiment, the specific implementation manner can refer to the Figure 3 relevant description of the shown embodiment. To avoid repeated description, this embodiment will not be elaborated here.

[0419] The following uses multiple embodiments to illustrate the method provided by the embodiments of the present application:

[0420] Embodiment 1:

[0421] In this embodiment, taking the base station sending and the terminal receiving the target signal for sensing as an example, the specific signal transmission and interaction process is described. As Figure 17 shown, it includes the following steps:

[0422] Step 1: The sensing network function sends sensing requirement information (optionally) to the base station.

[0423] Step 2: The base station sends indication information to the terminal, and the indication information includes at least one of the following:

[0424] Configuration information of the target signal, measurement configuration information, measurement assistance information.

[0425] Among them, at least one of the above indication information can also be sent by the sensing network function to the terminal (and the base station); and at least two of the first indication information can be sent by the same signaling, or sent by different signalings, and the sending order is not limited.

[0426] Step 3: The base station transmits a target signal.

[0427] Step 4: The terminal receives the target signal and performs sensing measurements (or communication measurements) to obtain a sensing measurement result.

[0428] Step 5: The terminal sends the sensing measurement result to the sensing network function.

[0429] Step 6: The sensing network function calculates a sensing result based on the sensing measurement result. Optionally, it can also be that the terminal sends the sensing measurement result to the base station, and the base station calculates the sensing result based on the sensing measurement result and sends it to the sensing network function.

[0430] If the target signal is a signal for channel measurement or beam management, communication-related measurement results also need to be fed back, including but not limited to at least one of PMI, RI, CQI, RSRP, RSRQ, RSSI, SNR, SINR, BER, BLER, beam indication (such as beam index).

[0431] The sensing result is further calculated based on the sensing measurement result, and the sensing measurement result and the sensing result are the values of sensing measurement quantities. For example, the sensing measurement result is the time delay and angle information corresponding to the sensing target, and the sensing result is the position or trajectory information of the sensing target.

[0432] It should be noted that for the scenario where device A sends and device B receives sensing and communication, it can also be that after the terminal receives the indication information, it sends the target signal according to the indication information, and the base station receives the signal, performs measurements, and sends the sensing measurement result to the sensing network function; or the base stations send and receive the target signal to each other, or the terminals send and receive the target signal to each other. This embodiment does not limit this.

[0433] Embodiment 2:

[0434] This embodiment describes the self-transmission and self-reception sensing and communication process. In this embodiment, taking the base station sending a target signal and receiving the target signal echo for sensing as an example, the specific signal transmission, reception, and interaction process is described as follows Figure 18 as shown, including the following steps:

[0435] Step 1: The sensing network function sends sensing requirement information to the base station (optionally).

[0436] Step 2: The base station sends indication information to the terminal, and the indication information includes at least one of the following:

[0437] Configuration information of the target signal, measurement configuration information (when the target signal is a reference signal for the terminal to perform channel estimation and demodulation, or the target signal is not used for communication, there is no need to send measurement configuration information), measurement auxiliary information.

[0438] Step 3: The base station sends a target signal.

[0439] Step 4: Receive the target signal and perform measurements. This step includes:

[0440] The base station performs measurements based on the received target signal echo to obtain a sensing measurement result.

[0441] Alternatively, the terminal receives the target signal and performs measurements to obtain a communication measurement result; or, the terminal receives the target signal and uses it for channel estimation and demodulation.

[0442] Step 5: Feedback of the measurement result. This step includes:

[0443] The base station sends the sensing measurement result to the sensing network function.

[0444] Or, the terminal sends the communication measurement result to the base station. (When the target signal is a reference signal for the terminal to perform channel estimation and demodulation, or the target signal is not used for communication, there is no need to feedback the measurement result)

[0445] Step 6: The sensing network function calculates a sensing result based on the sensing measurement result. Optionally, it can also be that the base station calculates the sensing result based on the sensing measurement result and sends it to the sensing network function.

[0446] It should be noted that for the scenario of self - transmitting and self - receiving sensing and communication, it can also be that after the terminal receives the indication information, it sends the target signal according to the indication information, the terminal receives the target signal echo and performs measurements to obtain a sensing measurement result and sends it to the sensing network function, the base station receives the target signal and performs measurements to obtain a communication measurement result, or the base station receives the target signal for channel estimation and demodulation.

[0447] In the signal sending method provided by the embodiments of the present application, the execution subject can be a signal sending device. In the embodiments of the present application, taking the signal sending device executing the signal sending method as an example, the signal sending device provided by the embodiments of the present application is described.

[0448] In the signal measurement method provided by the embodiments of the present application, the execution subject can be a signal measurement device. In the embodiments of the present application, taking the signal measurement device executing the signal measurement method as an example, the signal measurement device provided by the embodiments of the present application is described.

[0449] Please refer to Figure 19 , Figure 19 which is a structural diagram of a signal sending device provided by the embodiments of the present application. As Figure 19 shown, the signal sending device 1900 includes:

[0450] A sending module 1901, configured to send a target signal, where the target signal is used for measurement;

[0451] Among them, the target signal includes M segments of chirp signals, where M is a positive integer greater than 1;

[0452] For two adjacent chirp signals among the M segments of chirp signals, the starting frequency of the latter chirp signal is the ending frequency of the former chirp signal, and the frequency modulation slopes of the two adjacent chirp signals are different.

[0453] Optionally, the M segments of chirp signals have at least one of the following characteristics:

[0454] The sum of the bandwidths of the M segments of chirp signals is equal to the bandwidth of the target signal;

[0455] The polarities of the frequency modulation slopes of the M segments of chirp signals are the same;

[0456] The sum of the frequency modulation slopes of the M segments of chirp signals satisfies T i is the frequency modulation slope of the i-th segment of chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th segment of chirp signal, T Chirp is the average duration of the M segments of chirp signals;

[0457] The sum of the durations of the M segments of chirp signals is equal to the duration of the target signal;

[0458] The durations of the M segments of chirp signals are the same;

[0459] The duration of each chirp signal in the M segments of chirp signals is the same as the duration of an orthogonal frequency division multiplexing (OFDM) symbol, and the OFDM symbol includes a cyclic prefix (CP) or does not include a CP.

[0460] Optionally, the first parameter of at least one of the M segments of chirp signals is associated with target information, and the target information includes at least one of the following:

[0461] Perception information, time domain resource information, frequency domain resource information, antenna port index, number of antenna ports, code division multiplexing (CDM) group index, number of CDM groups, antenna index, number of antennas, codeword index.

[0462] Optionally, the first parameter of the at least one segment of chirp signal includes at least one of the following:

[0463] Frequency modulation slope, starting frequency point, ending frequency point, bandwidth.

[0464] Optionally, the perception information includes at least one of the following:

[0465] Perception area identifier, identifier for indicating whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, label identifier associated with the perception target, number of perception targets, device information participating in perception measurement.

[0466] Optionally, the sending module 1901 is configured to send the target signal through multiple antenna ports, where the frequency modulation slopes of the target signals sent by different antenna ports are different.

[0467] Optionally, the different frequency modulation slopes of the target signals sent by different antenna ports include at least one of the following:

[0468] The frequency modulation slopes of the h-th segment Chirp signals of the target signals sent by different antenna ports are different;

[0469] The frequency modulation slope of the h-th segment Chirp signal of the target signal sent by one antenna port among the multiple antenna ports is different from the frequency modulation slope of the j-th segment Chirp signal of the target signal sent by other antenna ports;

[0470] where h is a positive integer less than or equal to M, j is a positive integer less than or equal to M, and j is not equal to h.

[0471] Optionally, the absolute values of the frequency modulation slopes of the target signals sent by different antenna ports are uniformly distributed within the same value range, and the absolute values or polarities of the frequency modulation slopes of the target signals sent by different antenna terminals are different; or,

[0472] The absolute values of the frequency modulation slopes of the target signals sent by different antenna ports are uniformly distributed within different value ranges, and the absolute values or polarities of the frequency modulation slopes of the target signals sent by different antenna terminals are different.

[0473] Optionally, the time domain or frequency domain resources occupied by the target signals sent by different antenna ports among the multiple antenna ports are the same.

[0474] Optionally, the target signal is time-division multiplexed with other signals, and the other signals are signals different from the target signal in the OFDM system.

[0475] Optionally, the second parameter of the target signal is associated with the perception requirement information, and the second parameter includes at least one of the following:

[0476] Transmission period, time interval, bandwidth, duration, number of the target signals, total duration of the target signals sent by the first device.

[0477] Optionally, when the first device transmits multiple target signals, the time interval between adjacent target signals among the multiple target signals meets the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement;

[0478] Or,

[0479] The total duration of the target signals transmitted by the first device meets the Doppler resolution requirement or the velocity resolution requirement;

[0480] Or,

[0481] The bandwidth of the target signal meets the time delay resolution requirement or the distance resolution requirement.

[0482] Optionally, the device further includes:

[0483] A transmission module, configured to receive or transmit indication information, where the indication information is used to indicate at least one of the following:

[0484] The configuration information of the target signal, the measurement configuration information, and the measurement assistance information.

[0485] Optionally, the configuration information of the target signal includes at least one of the following:

[0486] The number of Chirp signal segments included in the target signal;

[0487] The frequency modulation slope information of at least one Chirp signal in the target signal;

[0488] The frequency domain resource information of at least one Chirp signal in the target signal;

[0489] The time domain resource information of at least one Chirp signal in the target signal;

[0490] The antenna port information of the target signal;

[0491] At least one of the target information, where the target information is information associated with the first parameter of at least one Chirp signal among the M Chirp signals.

[0492] Optionally, the frequency domain resource information includes at least one of the following:

[0493] The start frequency of at least one Chirp signal in the target signal, the stop frequency of at least one Chirp signal in the target signal, and the bandwidth information of at least one Chirp signal in the target signal.

[0494] Optionally, the antenna port information includes at least one of the following:

[0495] Mapping relationship between at least one antenna port and frequency modulation slope;

[0496] Mapping relationship between at least one antenna port and termination frequency;

[0497] Mapping relationship between at least one antenna port and start frequency;

[0498] Mapping relationship between at least one antenna port and bandwidth;

[0499] Calculation method of frequency modulation slope corresponding to at least one antenna port;

[0500] Calculation method of termination frequency corresponding to at least one antenna port;

[0501] Calculation method of start frequency corresponding to at least one antenna port;

[0502] Calculation method of bandwidth corresponding to at least one antenna port;

[0503] Total number of antenna ports;

[0504] Antenna port index information.

[0505] The above signal sending device can improve the measurement performance of the device.

[0506] In the embodiments of the present application, the signal sending device may 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. For example: The electronic device may be a terminal or other devices other than the terminal. Exemplarily, the terminal may include, but is not limited to, the types of terminals listed in the embodiments of the present application, and other devices may be a server, a Network Attached Storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0507] The signal sending device provided in the embodiments of the present application can implement Figure 3 each process implemented by the method embodiment shown, and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0508] Please refer to Figure 20 , Figure 20 is a structural diagram of a signal measurement device provided in the embodiments of the present application. As Figure 20 shown, the signal measurement device 2000 includes:

[0509] A measurement module 2001, configured to measure a target signal to obtain a measurement result;

[0510] Wherein, the target signal includes M segments of chirp signals, and M is a positive integer greater than 1;

[0511] For two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

[0512] Optionally, the M Chirp signals have at least one of the following characteristics:

[0513] The sum of the bandwidths of the M Chirp signals is equal to the bandwidth of the target signal;

[0514] The polarities of the frequency modulation slopes of the M Chirp signals are the same;

[0515] The sum of the frequency modulation slopes of the M Chirp signals satisfies T i is the frequency modulation slope of the i-th Chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th Chirp signal, T Chirp is the average duration of the M Chirp signals;

[0516] The sum of the durations of the M Chirp signals is equal to the duration of the target signal;

[0517] The durations of the M Chirp signals are the same;

[0518] The duration of each Chirp signal in the M Chirp signals is the same as the duration of an orthogonal frequency division multiplexing (OFDM) symbol, and the OFDM symbol includes a cyclic prefix (CP) or does not include a CP.

[0519] Optionally, the first parameter of at least one Chirp signal among the M Chirp signals is associated with target information, and the target information includes at least one of the following:

[0520] Perception information, time domain resource information, frequency domain resource information, antenna port index, number of antenna ports, code division multiplexing (CDM) group index, number of CDM groups, antenna index, number of antennas, codeword index.

[0521] Optionally, the first parameter of the at least one Chirp signal includes at least one of the following:

[0522] Frequency modulation slope, starting frequency point, ending frequency point, bandwidth.

[0523] Optionally, the perception information includes at least one of the following:

[0524] Perception area identifier, identifier indicating whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, label identifier associated with the perception target, number of perception targets, device information participating in perception measurement.

[0525] Optionally, the second device measures the target signal to obtain a measurement result, including:

[0526] The second device measures the target signal sent by the first device through multiple antenna ports to obtain a measurement result, where the frequency modulation slopes of the target signals sent by different antenna ports are different.

[0527] Optionally, the different frequency modulation slopes of the target signals sent by different antenna ports include at least one of the following:

[0528] The frequency modulation slopes of the h-th segment Chirp signals of the target signals sent by different antenna ports are different;

[0529] The frequency modulation slope of the h-th segment Chirp signal of the target signal sent by one antenna port among the multiple antenna ports is different from the frequency modulation slope of the j-th segment Chirp signal of the target signal sent by other antenna ports;

[0530] Where h is a positive integer less than or equal to M, j is a positive integer less than or equal to M, and j is not equal to h.

[0531] Optionally, the absolute values of the frequency modulation slopes of the target signals sent by different antenna ports are evenly distributed within the same value range, and the absolute values or polarities of the frequency modulation slopes of the target signals sent by different antenna terminals are different; or,

[0532] The absolute values of the frequency modulation slopes of the target signals sent by different antenna ports are evenly distributed within different value ranges, and the absolute values or polarities of the frequency modulation slopes of the target signals sent by different antenna terminals are different.

[0533] Optionally, the target signal is time-division multiplexed with other signals, and the other signals are signals different from the target signal in the OFDM system.

[0534] Optionally, the second parameter of the target signal is associated with the perception requirement information, and the second parameter includes at least one of the following:

[0535] Transmission period, time interval, bandwidth, duration, number of the target signals, total duration of the target signals sent by the first device.

[0536] Optionally, when the first device sends multiple target signals, the time interval between adjacent target signals among the multiple target signals meets the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement;

[0537] Or,

[0538] The total duration of the target signals sent by the first device meets the Doppler resolution requirement or the velocity resolution requirement;

[0539] Or,

[0540] The bandwidth of the target signal meets the time delay resolution requirement or the distance resolution requirement.

[0541] Optionally, the device further includes:

[0542] A transmission module, configured to send or receive indication information, where the indication information is used to indicate at least one of the following:

[0543] The configuration information of the target signal, the measurement configuration information, and the measurement assistance information.

[0544] Optionally, the configuration information of the target signal includes at least one of the following:

[0545] The number of Chirp signal segments included in the target signal;

[0546] The frequency modulation slope information of at least one Chirp signal in the target signal;

[0547] The frequency domain resource information of at least one Chirp signal in the target signal;

[0548] The time domain resource information of at least one Chirp signal in the target signal;

[0549] The antenna port information of the target signal;

[0550] At least one of the target information, where the target information is information associated with the first parameter of at least one Chirp signal among the M Chirp signals.

[0551] Optionally, the frequency domain resource information includes at least one of the following:

[0552] The start frequency of at least one Chirp signal in the target signal, the stop frequency of at least one Chirp signal in the target signal, and the bandwidth information of at least one Chirp signal in the target signal.

[0553] Optionally, the antenna port information includes at least one of the following:

[0554] The mapping relationship between at least one antenna port and the frequency modulation slope;

[0555] The mapping relationship between at least one antenna port and the termination frequency;

[0556] The mapping relationship between at least one antenna port and the starting frequency;

[0557] The mapping relationship between at least one antenna port and the bandwidth;

[0558] The calculation method of the frequency modulation slope corresponding to at least one antenna port;

[0559] The calculation method of the termination frequency corresponding to at least one antenna port;

[0560] The calculation method of the starting frequency corresponding to at least one antenna port;

[0561] The calculation method of the bandwidth corresponding to at least one antenna port;

[0562] The total number of antenna ports;

[0563] Antenna port index information.

[0564] The above signal measurement device can improve the measurement performance of the device.

[0565] The signal measurement device in the embodiments 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 a network-side device.

[0566] The signal measurement device provided in the embodiments of the present application can implement Figure 5 each process implemented by the method embodiment shown, and achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0567] Optionally, as Figure 21 shown, the embodiments of the present application further provide a communication device 2100, including a processor 2101 and a memory 2102. A program or instruction that can run on the processor 2101 is stored on the memory 2102. For example, when the communication device 2100 is the first device, when the program or instruction is executed by the processor 2101, each step of the above signal sending method embodiment is implemented, and the same technical effect can be achieved. When the communication device 2100 is the second device, when the program or instruction is executed by the processor 2101, each step of the above signal measurement method embodiment is implemented, and the same technical effect can be achieved. To avoid repetition, it will not be elaborated here.

[0568] An embodiment of the present application further provides a communication device, including a processor and a communication interface. The communication interface is configured to send a target signal for measurement. The target signal includes M segments of chirp signals, where M is a positive integer greater than 1. For two adjacent segments of chirp signals among the M segments of chirp signals, the starting frequency of the latter segment of chirp signal is the ending frequency of the former segment of chirp signal, and the frequency modulation slopes of the two adjacent segments of chirp signals are different. This embodiment of the communication device corresponds to the above embodiment of the signal sending method. Each implementation process and implementation manner of the above method embodiment can be applied to this embodiment of the communication device and can achieve the same technical effect.

[0569] Specifically, Figure 22 FIG. is a schematic hardware structure diagram of a device for implementing an embodiment of the present application. The device is a first device or a second device.

[0570] The device 2200 includes, but is not limited to, at least some components such as a radio frequency unit 2201, a network module 2202, an audio output unit 2203, an input unit 2204, a sensor 2205, a display unit 2206, a user input unit 2207, an interface unit 2208, a memory 2209, and a processor 2210.

[0571] Those skilled in the art can understand that the device 2200 may further include a power supply (such as a battery) for supplying power to each component. The power supply may be logically connected to the processor 2210 through a power management system, so as to implement functions such as management of charging, discharging, and power consumption management through the power management system. Figure 22 The device structure shown in FIG. does not limit the device. The device may include more or fewer components than shown in the figure, or combine some components, or have different component arrangements, which will not be elaborated here.

[0572] It should be understood that in the embodiments of the present application, the input unit 2204 may include a Graphics Processing Unit (GPU) 22041 and a microphone 22042. The graphics processing unit 22041 processes the image data of static pictures or videos obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The display unit 2206 may include a display panel 22061, and the display panel 22061 may be configured in the form of, for example, a liquid crystal display, an organic light emitting diode, etc. The user input unit 2207 includes at least one of a touch panel 22071 and other input devices 22072. The touch panel 22071 is also referred to as a touch screen. The touch panel 22071 may include two parts: a touch detection device and a touch controller. The other input devices 22072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, which will not be elaborated herein.

[0573] In the embodiments of the present application, after receiving downlink data from a network side device, the radio frequency unit 2201 may transmit it to the processor 2210 for processing; in addition, the radio frequency unit 2201 may send uplink data to the network side device. Generally, the radio frequency unit 2201 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, etc.

[0574] The memory 2209 can be used to store software programs or instructions as well as various data. The memory 2209 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data. Among them, the first storage area may store an operating system, application programs or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 2209 may include a volatile memory or a non-volatile memory, or the memory 2209 may include both a volatile memory and a non-volatile memory. Among them, 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 (Synchronous DRAM, SDRAM), a double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), an enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), a synchronous link dynamic random access memory (Synch link DRAM, SLDRAM), and a direct rambus random access memory (Direct Rambus RAM, DRRAM). The memory 2209 in the embodiments of the present application includes but is not limited to these and any other suitable types of memories.

[0575] The processor 2210 may include one or more processing units; optionally, the processor 2210 integrates an application processor and a modem processor. Among them, the application processor mainly processes operations related to the operating system, user interface, and application programs, etc., and the modem processor mainly processes wireless communication signals, such as a baseband processor. It can be understood that the above-mentioned modem processor may not be integrated into the processor 2210 either.

[0576] In this embodiment, taking the above device as the first device and the first device being a terminal as an example for illustration.

[0577] The radio frequency unit 2201 is used to send a target signal for measurement.

[0578] Among them, the target signal includes M segments of chirp signals, and M is a positive integer greater than 1.

[0579] For two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

[0580] Optionally, the M Chirp signals have at least one of the following characteristics:

[0581] The sum of the bandwidths of the M Chirp signals is equal to the bandwidth of the target signal;

[0582] The polarities of the frequency modulation slopes of the M Chirp signals are the same;

[0583] The sum of the frequency modulation slopes of the M Chirp signals satisfies T i is the frequency modulation slope of the i-th Chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th Chirp signal, T Chirp is the average duration of the M Chirp signals;

[0584] The sum of the durations of the M Chirp signals is equal to the duration of the target signal;

[0585] The durations of the M Chirp signals are the same;

[0586] The duration of each Chirp signal in the M Chirp signals is the same as the duration of an orthogonal frequency division multiplexing (OFDM) symbol, and the OFDM symbol includes a cyclic prefix (CP) or does not include a CP.

[0587] Optionally, the first parameter of at least one Chirp signal among the M Chirp signals is associated with target information, and the target information includes at least one of the following:

[0588] Perception information, time domain resource information, frequency domain resource information, antenna port index, number of antenna ports, code division multiplexing (CDM) group index, number of CDM groups, antenna index, number of antennas, codeword index.

[0589] Optionally, the first parameter of the at least one Chirp signal includes at least one of the following:

[0590] Frequency modulation slope, starting frequency point, ending frequency point, bandwidth.

[0591] Optionally, the perception information includes at least one of the following:

[0592] Perception area identifier, identifier indicating whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, label identifier associated with the perception target, number of perception targets, device information participating in perception measurement.

[0593] Optionally, the transmitted target signal includes:

[0594] The target signal is transmitted through multiple antenna ports, where the frequency modulation slopes of the target signals transmitted by different antenna ports are different.

[0595] Optionally, the different frequency modulation slopes of the target signals transmitted by different antenna ports include at least one of the following:

[0596] The frequency modulation slopes of the h-th segment Chirp signals of the target signals transmitted by different antenna ports are different;

[0597] The frequency modulation slope of the h-th segment Chirp signal of the target signal transmitted by one antenna port among the multiple antenna ports is different from the frequency modulation slope of the j-th segment Chirp signal of the target signal transmitted by other antenna ports;

[0598] where h is a positive integer less than or equal to M, j is a positive integer less than or equal to M, and j is not equal to h.

[0599] Optionally, the absolute values of the frequency modulation slopes of the target signals transmitted by different antenna ports are uniformly distributed within the same value range, and the absolute values or polarities of the frequency modulation slopes of the target signals transmitted by different antenna terminals are different; or,

[0600] The absolute values of the frequency modulation slopes of the target signals transmitted by different antenna ports are respectively uniformly distributed within different value ranges, and the absolute values or polarities of the frequency modulation slopes of the target signals transmitted by different antenna terminals are different.

[0601] Optionally, the time domain or frequency domain resources occupied by the target signals transmitted by different antenna ports among the multiple antenna ports are the same.

[0602] Optionally, the target signal is time-division multiplexed with other signals, and the other signals are signals different from the target signal in the OFDM system.

[0603] Optionally, the second parameter of the target signal is associated with the perception requirement information, and the second parameter includes at least one of the following:

[0604] Transmission period, time interval, bandwidth, duration, number of the target signals, total duration of the target signals transmitted by the first device.

[0605] Optionally, when the first device sends multiple target signals, the time interval between adjacent target signals among the multiple target signals meets the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement;

[0606] Or,

[0607] The total duration of the target signal sent by the first device meets the Doppler resolution requirement or the velocity resolution requirement;

[0608] Or,

[0609] The bandwidth of the target signal meets the time delay resolution requirement or the distance resolution requirement.

[0610] Optionally, the radio frequency unit 2201 is further configured to:

[0611] Receive or send indication information, where the indication information is used to indicate at least one of the following:

[0612] The configuration information of the target signal, the measurement configuration information, and the measurement assistance information.

[0613] Optionally, the configuration information of the target signal includes at least one of the following:

[0614] The number of Chirp signal segments included in the target signal;

[0615] The frequency modulation slope information of at least one Chirp signal in the target signal;

[0616] The frequency domain resource information of at least one Chirp signal in the target signal;

[0617] The time domain resource information of at least one Chirp signal in the target signal;

[0618] The antenna port information of the target signal;

[0619] At least one of the target information, where the target information is the information associated with the first parameter of at least one Chirp signal among the M Chirp signals.

[0620] Optionally, the frequency domain resource information includes at least one of the following:

[0621] The start frequency of at least one Chirp signal in the target signal, the stop frequency of at least one Chirp signal in the target signal, and the bandwidth information of at least one Chirp signal in the target signal.

[0622] Optionally, the antenna port information includes at least one of the following:

[0623] The mapping relationship between at least one antenna port and the frequency modulation slope;

[0624] The mapping relationship between at least one antenna port and the termination frequency;

[0625] The mapping relationship between at least one antenna port and the starting frequency;

[0626] The mapping relationship between at least one antenna port and the bandwidth;

[0627] The calculation method of the frequency modulation slope corresponding to at least one antenna port;

[0628] The calculation method of the termination frequency corresponding to at least one antenna port;

[0629] The calculation method of the starting frequency corresponding to at least one antenna port;

[0630] The calculation method of the bandwidth corresponding to at least one antenna port;

[0631] The total number of antenna ports;

[0632] Antenna port index information.

[0633] The above device can improve the measurement performance of the device.

[0634] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment can refer to the relevant descriptions of the above-mentioned perception measurement result sending method, and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0635] It should be noted that the above device can also implement Figure 16 the steps in the method shown in Figure 20 or can implement the method executed by each module shown in

[0636] This application embodiment also provides a device, including a processor and a communication interface. The communication interface is coupled to the processor, and the processor is configured to run programs or instructions to implement the steps of the method embodiment as shown in Figure 16 This device embodiment corresponds to the above signal measurement method embodiment. Each implementation process and implementation manner of the above method embodiment can be applied to this device embodiment, and the same technical effects can be achieved.

[0637] An embodiment of the present application further provides a device, including a processor and a communication interface. The communication interface is configured to measure a target signal to obtain a measurement result. The target signal includes M segments of chirp signals, where M is a positive integer greater than 1. For two adjacent chirp signals among the M segments of chirp signals, the starting frequency of the latter chirp signal is the ending frequency of the former chirp signal, and the frequency modulation slopes of the two adjacent chirp signals are different.

[0638] Specifically, an embodiment of the present application further provides a device, which is the first device or the second device. As Figure 23 shown, the device 2300 includes: an antenna 2301, a radio frequency device 2302, a baseband device 2303, a processor 2304, and a memory 2305. The antenna 2301 is connected to the radio frequency device 2302. In the uplink direction, the radio frequency device 2302 receives information through the antenna 2301 and sends the received information to the baseband device 2303 for processing. In the downlink direction, the baseband device 2303 processes the information to be sent and sends it to the radio frequency device 2302. The radio frequency device 2302 processes the received information and then sends it out through the antenna 2301.

[0639] In the above embodiments, the signal measurement method can be implemented in the baseband device 2303, and the baseband device 2303 includes a baseband processor.

[0640] The baseband device 2303 may include, for example, at least one baseband board, and a plurality of chips are provided on the baseband board. As Figure 23 shown, one of the chips is, for example, a baseband processor, which is connected to the memory 2305 through a bus interface to call a program in the memory 2305 and execute the device operations shown in the above method embodiments.

[0641] The device may further include a network interface 2306, and the interface is, for example, a Common Public Radio Interface (CPRI).

[0642] Specifically, the device 2300 in the embodiment of the present application further includes: instructions or programs stored on the memory 2305 and executable on the processor 2304. The processor 2304 calls the instructions or programs in the memory 2305 to execute Figure 20 the methods executed by the modules shown, and achieves the same technical effects. To avoid repetition, it will not be described in detail here.

[0643] In this embodiment, the above device is taken as the second device for illustration.

[0644] The radio frequency device 2302 is configured to measure a target signal to obtain a measurement result.

[0645] Among them, the target signal includes M segments of chirp signals, where M is a positive integer greater than 1;

[0646] For two adjacent chirp signals among the M chirp signals, the starting frequency of the latter chirp signal is the termination frequency of the former chirp signal, and the frequency modulation slopes of the two adjacent chirp signals are different.

[0647] Optionally, the M chirp signals have at least one of the following characteristics:

[0648] The sum of the bandwidths of the M chirp signals is equal to the bandwidth of the target signal;

[0649] The polarities of the frequency modulation slopes of the M chirp signals are the same;

[0650] The sum of the frequency modulation slopes of the M chirp signals satisfies T i is the frequency modulation slope of the i-th chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th chirp signal, T Chirp is the average duration of the M chirp signals;

[0651] The sum of the durations of the M chirp signals is equal to the duration of the target signal;

[0652] The durations of the M chirp signals are the same;

[0653] The duration of each chirp signal in the M chirp signals is the same as the duration of an orthogonal frequency division multiplexing (OFDM) symbol, and the OFDM symbol includes a cyclic prefix (CP) or does not include a CP.

[0654] Optionally, the first parameter of at least one chirp signal among the M chirp signals is associated with target information, and the target information includes at least one of the following:

[0655] Perception information, time domain resource information, frequency domain resource information, antenna port index, number of antenna ports, code division multiplexing (CDM) group index, number of CDM groups, antenna index, number of antennas, codeword index.

[0656] Optionally, the first parameter of the at least one chirp signal includes at least one of the following:

[0657] Frequency modulation slope, starting frequency point, termination frequency point, bandwidth.

[0658] Optionally, the perception information includes at least one of the following:

[0659] Perception area identifier, identifier for indicating whether it is used for perception, perception service identifier, perception service type identifier, perception target identifier, label identifier associated with the perception target, number of perception targets, device information participating in perception measurement.

[0660] Optionally, the second device measures the target signal to obtain a measurement result, including:

[0661] The second device measures the target signal sent by the first device through multiple antenna ports to obtain a measurement result, where the frequency modulation slopes of the target signals sent by different antenna ports are different.

[0662] Optionally, the different frequency modulation slopes of the target signals sent by different antenna ports include at least one of the following:

[0663] The frequency modulation slopes of the h-th segment Chirp signals of the target signals sent by different antenna ports are different;

[0664] The frequency modulation slope of the h-th segment Chirp signal of the target signal sent by one antenna port among the multiple antenna ports is different from the frequency modulation slope of the j-th segment Chirp signal of the target signals sent by other antenna ports;

[0665] where h is a positive integer less than or equal to M, j is a positive integer less than or equal to M, and j is not equal to h.

[0666] Optionally, the absolute values of the frequency modulation slopes of the target signals sent by different antenna ports are evenly distributed within the same value range, and the absolute values of the frequency modulation slopes of the target signals sent by different antenna terminals are different or have different polarities; or,

[0667] The absolute values of the frequency modulation slopes of the target signals sent by different antenna ports are respectively evenly distributed within different value ranges, and the absolute values of the frequency modulation slopes of the target signals sent by different antenna terminals are different or have different polarities.

[0668] Optionally, the target signal is time-division multiplexed with other signals, and the other signals are signals different from the target signal in the OFDM system.

[0669] Optionally, the second parameter of the target signal is associated with the perception requirement information, and the second parameter includes at least one of the following:

[0670] Transmission period, time interval, bandwidth, duration, number of the target signals, total duration of the target signals sent by the first device.

[0671] Optionally, when the first device sends multiple target signals, the time interval between adjacent target signals among the multiple target signals meets the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement;

[0672] Or,

[0673] The total duration of the target signal sent by the first device meets the Doppler resolution requirement or the velocity resolution requirement;

[0674] Or,

[0675] The bandwidth of the target signal meets the time delay resolution requirement or the distance resolution requirement.

[0676] Optionally, the radio frequency device 2302 is further configured to:

[0677] Send or receive indication information, where the indication information is used to indicate at least one of the following:

[0678] The configuration information of the target signal, the measurement configuration information, and the measurement assistance information.

[0679] Optionally, the configuration information of the target signal includes at least one of the following:

[0680] The number of Chirp signal segments included in the target signal;

[0681] The frequency modulation slope information of at least one Chirp signal in the target signal;

[0682] The frequency domain resource information of at least one Chirp signal in the target signal;

[0683] The time domain resource information of at least one Chirp signal in the target signal;

[0684] The antenna port information of the target signal;

[0685] At least one of the target information, where the target information is the information associated with the first parameter of at least one Chirp signal among the M Chirp signals.

[0686] Optionally, the frequency domain resource information includes at least one of the following:

[0687] The start frequency of at least one Chirp signal in the target signal, the stop frequency of at least one Chirp signal in the target signal, and the bandwidth information of at least one Chirp signal in the target signal.

[0688] Optionally, the antenna port information includes at least one of the following:

[0689] The mapping relationship between at least one antenna port and the frequency modulation slope;

[0690] The mapping relationship between at least one antenna port and the termination frequency;

[0691] The mapping relationship between at least one antenna port and the starting frequency;

[0692] The mapping relationship between at least one antenna port and the bandwidth;

[0693] The calculation method of the frequency modulation slope corresponding to at least one antenna port;

[0694] The calculation method of the termination frequency corresponding to at least one antenna port;

[0695] The calculation method of the starting frequency corresponding to at least one antenna port;

[0696] The calculation method of the bandwidth corresponding to at least one antenna port;

[0697] The total number of antenna ports;

[0698] Antenna port index information.

[0699] The above device can improve the measurement performance of the device.

[0700] It can be understood that the implementation processes of the various implementation manners mentioned in this embodiment can refer to the relevant descriptions of the above method embodiments and achieve the same or corresponding technical effects. To avoid repetition, they will not be elaborated here.

[0701] It should be noted that the above device can also implement Figure 3 the steps in the method shown in Figure 19 or can implement the methods executed by the various modules shown in

[0702] This application embodiment also provides a readable storage medium. A program or instruction is stored on the readable storage medium. When the program or instruction is executed by a processor, it implements each process of the above signal sending method or signal measurement method embodiment and can achieve the same technical effect. To avoid repetition, it will not be elaborated here.

[0703] Among them, the processor is the processor in the terminal described in the above embodiment. The readable storage medium includes computer-readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disks, or optical discs, etc. In some examples, the readable storage medium can be a non-transitory readable storage medium.

[0704] Another embodiment of the present application further provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is configured to run programs or instructions to implement each process of the signal sending method or the signal measurement method embodiment described above, and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0705] It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, system chip, chip system, or system-on-chip.

[0706] Another 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 each process of the signal sending method or the signal measurement method embodiment described above, and can achieve the same technical effects. To avoid repetition, details are not described herein again.

[0707] Another embodiment of the present application further provides a wireless communication system, including: a first device and a second device. The first device can be used to execute the steps of the signal sending method provided in the embodiments of the present application, and the second device can be used to execute the steps of the signal measurement method provided in the embodiments of the present application.

[0708] It should be noted that in this document, the terms "including", "comprising" or any other variation thereof are intended to cover non-exclusive inclusion, such that a process, method, article or device including a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the phrase "including a..." does not exclude the presence of additional identical elements in the process, method, article or device including that element. In addition, it should be pointed out that the methods and devices in the embodiments of the present application are not limited to performing functions in the order shown or discussed. They may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted or combined. Additionally, the features described with reference to certain examples may be combined in other examples.

[0709] Through the description of the above embodiments, those skilled in the art can clearly understand that the above embodiment methods can be implemented by means of a computer software product plus a necessary general hardware platform, and of course, can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes several instructions for causing a terminal or a network-side device to execute the methods described in the various embodiments of the present application.

[0710] The embodiments of the present application have been described above in conjunction with the accompanying drawings. However, the present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative rather than restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms of embodiments without departing from the purpose of the present application and the scope protected by the claims. These embodiments are all within the protection scope of the present application.

Claims

1. A signal sending method, characterized in that, Including: A first device transmits a target signal for measurement. Wherein, the target signal includes M segments of chirp signals, and M is a positive integer greater than 1. For two adjacent chirp signals among the M segments of chirp signals, the starting frequency of the latter chirp signal is the ending frequency of the former chirp signal, and the frequency modulation slopes of the two adjacent chirp signals are different.

2. The method according to claim 1, wherein The M segments of chirp signals have at least one of the following characteristics: The sum of the bandwidths of the M segments of chirp signals is equal to the bandwidth of the target signal. The polarities of the frequency modulation slopes of the M segments of chirp signals are the same. The sum of the frequency modulation slopes of the M Chirp signals satisfies T i is the frequency modulation slope of the i-th Chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th Chirp signal, T Chirp is the average duration of the M Chirp signals; The sum of the durations of the M segments of chirp signals is equal to the duration of the target signal. The durations of the M segments of chirp signals are the same. The duration of each chirp signal in the M segments of chirp signals is the same as the duration of an orthogonal frequency division multiplexing (OFDM) symbol, and the OFDM symbol includes a cyclic prefix (CP) or does not include a CP.

3. The method according to claim 1 or 2, characterized in that, The first device transmitting the target signal includes: The first device transmits the target signal through multiple antenna ports, wherein the frequency modulation slopes of the target signals transmitted by different antenna ports are different.

4. The method according to claim 3, characterized in that, The different frequency modulation slopes of the target signals transmitted by different antenna ports include at least one of the following: The frequency modulation slopes of the h-th segment of chirp signals of the target signals transmitted by different antenna ports are different. The frequency modulation slope of the h-th segment of chirp signal of the target signal transmitted by one antenna port among the multiple antenna ports is different from the frequency modulation slope of the j-th segment of chirp signal of the target signals transmitted by other antenna ports. Wherein, h is a positive integer less than or equal to M, j is a positive integer less than or equal to M, and j is not equal to h.

5. The method according to claim 3 or 4, characterized in that, The absolute values of the frequency modulation slopes of the target signals transmitted by different antenna ports are uniformly distributed within the same value range, and the absolute values or polarities of the frequency modulation slopes of the target signals transmitted by different antenna terminals are different; or, The absolute values of the frequency modulation slopes of the target signals transmitted by different antenna ports are respectively uniformly distributed within different value ranges, and the absolute values or polarities of the frequency modulation slopes of the target signals transmitted by different antenna terminals are different.

6. The method according to any one of claims 3 to 5, characterized in that, The time domain or frequency domain resources occupied by the target signals transmitted by different antenna ports among the multiple antenna ports are the same.

7. The method according to any one of claims 1 to 6, characterized in that The target signal is time-division multiplexed with other signals, and the other signals are signals different from the target signal in an OFDM system.

8. The method according to any one of claims 1 to 7, characterized in that The second parameter of the target signal is associated with the sensing requirement information, and the second parameter includes at least one of the following: Transmission period, time interval, bandwidth, duration, the number of the target signals, the total duration of the target signals transmitted by the first device.

9. The method according to any one of claims 1 to 8, characterized in that, When the first device transmits multiple target signals, the time interval between adjacent target signals among the multiple target signals meets the maximum unambiguous velocity measurement range requirement or the maximum unambiguous Doppler measurement range requirement; Or, The total duration of the target signal sent by the first device meets the Doppler resolution requirement or the velocity resolution requirement; Or, The bandwidth of the target signal meets the time delay resolution requirement or the distance resolution requirement.

10. The method according to any one of claims 1 to 9, characterized in that, The method further includes: The first device receives or sends indication information, where the indication information is used to indicate at least one of the following: Configuration information of the target signal, measurement configuration information, measurement assistance information.

11. The method according to claim 10, wherein The configuration information of the target signal includes at least one of the following: The number of Chirp signal segments included in the target signal; Frequency modulation slope information of at least one Chirp signal in the target signal; Frequency domain resource information of at least one Chirp signal in the target signal; Time domain resource information of at least one Chirp signal in the target signal; Antenna port information of the target signal; At least one of the target information, where the target information is information associated with the first parameter of at least one Chirp signal among the M Chirp signals.

12. The method according to any one of claims 1 to 11, characterized in that, The first parameter of at least one Chirp signal among the M Chirp signals is associated with the target information, and the target information includes at least one of the following: Sensing information, time domain resource information, frequency domain resource information, antenna port index, number of antenna ports, code division multiplexing CDM group index, number of CDM groups, antenna index, number of antennas, codeword index.

13. The method according to claim 11 or 12, characterized in that The first parameter of the at least one Chirp signal includes at least one of the following: Frequency modulation slope, starting frequency point, ending frequency point, bandwidth.

14. The method according to claim 12 or 13, characterized in that The sensing information includes at least one of the following: Sensing area identifier, identifier indicating whether it is used for sensing, sensing service identifier, sensing service type identifier, sensing target identifier, label identifier associated with the sensing target, number of sensing targets, device information participating in the sensing measurement.

15. The method according to claim 11, characterized in that The frequency domain resource information includes at least one of the following: Starting frequency of at least one Chirp signal in the target signal, ending frequency of at least one Chirp signal in the target signal, bandwidth information of at least one Chirp signal in the target signal.

16. The method according to claim 11 or 15, characterized in that, The antenna port information includes at least one of the following: Mapping relationship between at least one antenna port and the frequency modulation slope; Mapping relationship between at least one antenna port and the ending frequency; Mapping relationship between at least one antenna port and the starting frequency; Mapping relationship between at least one antenna port and the bandwidth; Calculation method of the frequency modulation slope corresponding to at least one antenna port; Calculation method of the ending frequency corresponding to at least one antenna port; Calculation method of the starting frequency corresponding to at least one antenna port; Calculation method of the bandwidth corresponding to at least one antenna port; Total number of antenna ports; Antenna port index information.

17. A signal measurement method, characterized in that, Including: The second device measures the target signal to obtain a measurement result; Wherein, the target signal includes M chirp Chirp signals, and M is a positive integer greater than 1; For two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the adjacent two Chirp signals are different.

18. The method according to claim 17, wherein The M-segment Chirp signal has at least one of the following characteristics: The sum of the bandwidths of the M-segment Chirp signal is equal to the bandwidth of the target signal; The polarities of the frequency modulation slopes of the M-segment Chirp signal are the same; The sum of the frequency modulation slopes of the M Chirp signals satisfies T i is the frequency modulation slope of the i-th Chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th Chirp signal, T Chirp is the average duration of the M Chirp signals; The sum of the durations of the M-segment Chirp signal is equal to the duration of the target signal; The durations of the M-segment Chirp signal are the same; The duration of each segment of the Chirp signal in the M-segment Chirp signal is the same as the duration of an orthogonal frequency division multiplexing (OFDM) symbol, and the OFDM symbol includes or does not include a cyclic prefix (CP); 19. The method according to claim 17 or 18, characterized in that, The first parameter of at least one segment of the M-segment Chirp signal is associated with target information, and the target information includes at least one of the following: Sensing information, time domain resource information, frequency domain resource information, antenna port index, number of antenna ports, code division multiplexing (CDM) group index, number of CDM groups, antenna index, number of antennas, codeword index.

20. The method according to claim 19, wherein The first parameter of the at least one segment of the Chirp signal includes at least one of the following: Frequency modulation slope, start frequency point, end frequency point, bandwidth.

21. The method according to claim 19 or 20, characterized in that, The sensing information includes at least one of the following: Sensing area identifier, identifier indicating whether it is used for sensing, sensing service identifier, sensing service type identifier, sensing target identifier, label identifier associated with the sensing target, number of sensing targets, device information participating in sensing measurement.

22. The method according to any one of claims 17 to 21, characterized in that The second device measures the target signal to obtain a measurement result, including: The second device measures the target signal transmitted by the first device through multiple antenna ports, and different antenna ports transmit target signals with different frequency modulation slopes.

23. The method according to claim 22, wherein The different frequency modulation slopes of the target signals transmitted by different antenna ports include at least one of the following: The frequency modulation slopes of the h-th segment of the Chirp signal of the target signals transmitted by different antenna ports are different; The frequency modulation slope of the h-th segment of the Chirp signal of the target signal transmitted by one antenna port among the multiple antenna ports is different from the frequency modulation slope of the j-th segment of the Chirp signal of the target signals transmitted by other antenna ports; Where h is a positive integer less than or equal to M, j is a positive integer less than or equal to M, and j is not equal to h.

24. The method according to any one of claims 17 to 23, characterized in that The second parameter of the target signal is associated with sensing requirement information, and the second parameter includes at least one of the following: Transmission period, time interval, bandwidth, duration, number of the target signals, total duration of the target signals transmitted by the first device.

25. The method according to any one of claims 17 to 24, characterized in that The method further includes: The second device sends or receives indication information, and the indication information is used to indicate at least one of the following: Configuration information of the target signal, measurement configuration information, measurement assistance information.

26. A signal sending device, characterized in that, Including: A sending module, configured to send a target signal for measurement; Where the target signal includes M segments of chirp (Chirp) signals, and M is a positive integer greater than 1; For two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

27. The device according to claim 26, wherein The M Chirp signals have at least one of the following characteristics: The sum of the bandwidths of the M Chirp signals is equal to the bandwidth of the target signal; The polarities of the frequency modulation slopes of the M Chirp signals are the same; The sum of the frequency modulation slopes of the M chirp signals satisfies T i is the i-th chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th chirp signal, T Chirp is the average duration of the M chirp signals; The sum of the durations of the M Chirp signals is equal to the duration of the target signal; The durations of the M Chirp signals are the same; The duration of each Chirp signal among the M Chirp signals is the same as the duration of an orthogonal frequency division multiplexing (OFDM) symbol, and the OFDM symbol includes a cyclic prefix (CP) or does not include a CP.

28. The device according to claim 26 or 27, characterized in that, At least one first parameter of at least one Chirp signal among the M Chirp signals is associated with target information, and the target information includes at least one of the following: Perception information, time domain resource information, frequency domain resource information, antenna port index, number of antenna ports, code division multiplexing (CDM) group index, number of CDM groups, antenna index, number of antennas, codeword index.

29. The device according to any one of claims 26 to 28, characterized in that, The transmitting module is used to transmit the target signal through multiple antenna ports, where the frequency modulation slopes of the target signals transmitted by different antenna ports are different.

30. The device according to claim 29, wherein The fact that the frequency modulation slopes of the target signals transmitted by different antenna ports are different includes at least one of the following: The frequency modulation slopes of the h-th Chirp signal of the target signals transmitted by different antenna ports are different; The frequency modulation slope of the h-th Chirp signal of the target signal transmitted by one antenna port among the multiple antenna ports is different from the frequency modulation slope of the j-th Chirp signal of the target signals transmitted by other antenna ports; Where h is a positive integer less than or equal to M, j is a positive integer less than or equal to M, and j is not equal to h.

31. The device according to any one of claims 26 to 30, characterized in that, The device further includes: A transmission module, used to receive or transmit indication information, where the indication information is used to indicate at least one of the following: Configuration information of the target signal, measurement configuration information, measurement assistance information.

32. A signal measurement device, characterized in that, Including: A measurement module, used to measure the target signal to obtain a measurement result; Where the target signal includes M chirp (Chirp) signals, and M is a positive integer greater than 1; For two adjacent Chirp signals among the M Chirp signals, the starting frequency of the latter Chirp signal is the ending frequency of the former Chirp signal, and the frequency modulation slopes of the two adjacent Chirp signals are different.

33. The device according to claim 32, characterized in that, The M Chirp signals have at least one of the following characteristics: The sum of the bandwidths of the M Chirp signals is equal to the bandwidth of the target signal; The polarities of the frequency modulation slopes of the M Chirp signals are the same; The sum of the frequency modulation slopes of the M chirp signals satisfies T i is the frequency modulation slope of the i-th chirp signal, B is the bandwidth of the target signal, T i is the duration of the i-th chirp signal, T Chirp is the average duration of the M chirp signals; The sum of the durations of the M Chirp signals is equal to the duration of the target signal; The durations of the M Chirp signals are the same; The duration of each segment of the M-segment Chirp signal is the same as the duration of an Orthogonal Frequency Division Multiplexing (OFDM) symbol, and the OFDM symbol includes a Cyclic Prefix (CP) or does not include a CP.

34. The device according to claim 32 or 33, characterized in that, The apparatus further comprises: a transmission module, configured to send or receive indication information for indicating at least one of the following: configuration information of the target signal, measurement configuration information, and measurement assistance information.

35. A device, characterized in that, comprising a processor and a memory, where the memory stores a program or instructions executable on the processor, and when the program or instructions are executed by the processor, the steps of the signal transmission method according to any one of claims 1 to 16 are implemented, or when the program or instructions are executed by the processor, the steps of the signal measurement method according to any one of claims 17 to 24 are implemented.

36. A readable storage medium, characterized in that, A program or instructions are stored on the readable storage medium, and when the program or instructions are executed by a processor, the steps of the signal transmission method according to any one of claims 1 to 16 are implemented, or the steps of the signal measurement method according to any one of claims 17 to 24 are implemented.

Images