Signal sending method, signal receiving method, and device

Abstract

Embodiments of the present application relate to the technical field of communications, and disclosed are a signal sending method, a signal receiving method, and a device. The signal sending method in the embodiments of the present application comprises: a first device sends a signal on the basis of a preset rule, wherein the preset rule comprises at least one of the following: a first rule: sending resources of the signal are gradually increased; a second rule: the sending resources of the signal are gradually decreased; and a third rule: the sending resources of the signal are kept unchanged.

Description

Signal sending and receiving method and device

[0001] Cross-references

[0002] This application claims priority to Chinese patent application number 2023107841416 filed in China on June 28, 2023, with invention name “Signal Transmitting, Receiving Method and Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to a signal sending and receiving method and device. Background Art

[0004] Signals (reference signals) in communication systems are primarily used for demodulation and communication channel measurement. Related technologies are exploring the potential for signal-based sensing, which requires designing signal transmission schemes that take into account the diverse functional characteristics of signals. However, current communication systems typically transmit signals in a fixed, inflexible manner, making it difficult to meet functional requirements or minimize signaling requirements.

[0005] Summary of the Invention

[0006] The embodiments of the present application provide a signal sending and receiving method and device, which can solve the problem of inflexible signal sending methods.

[0007] In a first aspect, a signal sending method is provided, including: a first device sends a signal based on preset rules, and the preset rules include at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged.

[0008] In a second aspect, a signal receiving method is provided, including: a second device receives a signal based on preset rules, and the preset rules include at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged.

[0009] In a third aspect, a first device is provided, including: a sending module for sending a signal based on preset rules, the preset rules including at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged.

[0010] In a fourth aspect, a second device is provided, including: a receiving module for receiving a signal based on preset rules, the preset rules including at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged.

[0011] In a fifth aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores programs or instructions that can be run on the processor, and when the program or instructions are executed by the processor, the steps of the method described in the first aspect or the second aspect are implemented.

[0012] In a sixth aspect, a communication device is provided, comprising a processor and a communication interface, wherein the communication interface is used to send signals based on preset rules, and the preset rules include at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged; or, the communication interface is used to receive signals based on preset rules, and the preset rules include at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged.

[0013] In the seventh aspect, a readable storage medium is provided, on which a program or instruction is stored. When the program or instruction is executed by a processor, the steps of the method described in the first aspect are implemented, or the steps of the method described in the second aspect are implemented.

[0014] In an eighth aspect, a wireless communication system is provided, comprising: a first device and a second device, wherein the first device can be used to execute the steps of the method described in the first aspect, and the second device can be used to execute the steps of the method described in the second aspect.

[0015] In the ninth aspect, a chip is provided, comprising a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0016] In the tenth aspect, a computer program / program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0017] In an embodiment of the present application, a first device transmits a signal based on a preset rule, wherein the preset rule includes at least one of the following: gradually increasing the signal transmission resource; gradually decreasing the signal transmission resource; or maintaining the signal transmission resource unchanged. This embodiment of the present application improves the flexibility of signal transmission; while meeting the functional requirements of the signal, it is easy to reduce or minimize the signal transmission resource overhead, or save the feedback signaling overhead used for adaptively adjusting the signal transmission resource. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of a wireless communication system according to an embodiment of the present application;

[0019] FIG2 is a schematic flowchart of a signal sending method according to an embodiment of the present application;

[0020] FIG3 is a schematic diagram showing a method for sending a signal according to an embodiment of the present application, wherein the time domain density gradually increases; FIG.

[0021] FIG4 is a second schematic diagram of gradually increasing time domain density of a signal sending method according to an embodiment of the present application;

[0022] FIG5 is a schematic diagram of calculating the perceived SNR or SINR of a signal transmission method according to an embodiment of the present application;

[0023] FIG6 is a schematic flowchart of a signal receiving method according to an embodiment of the present application;

[0024] FIG7 is a schematic structural diagram of a first device according to an embodiment of the present application;

[0025] FIG8 is a schematic structural diagram of a second device according to an embodiment of the present application;

[0026] FIG9 is a schematic structural diagram of a communication device according to an embodiment of the present application;

[0027] FIG10 is a schematic structural diagram of a terminal according to an embodiment of the present application;

[0028] FIG11 is a schematic structural diagram of a network-side device according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] The following will be combined with the accompanying drawings in the embodiments of this application to clearly describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of this application.

[0030] The terms "first", "second", etc. in this application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the terms used in this way are interchangeable where appropriate, 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 generally 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 this application represents at least one of the connected objects. For example, "A or B" covers three options, namely, Option 1: including A but not including B; Option 2: including B but not including A; Option 3: including both A and B. The character " / " generally indicates that the objects associated before and after are in an "or" relationship.

[0031] The term "indication" in this application can be either a direct indication (or explicit indication) or an indirect indication (or implicit indication). A direct indication can be understood as the sender explicitly informing the receiver of specific information, the operation to be performed, or the requested result, etc. in the instruction sent; an indirect indication can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the operation to be performed or the requested result, etc. based on the judgment result.

[0032] It is worth noting that the technology described in the embodiments of the present application is not limited to the Long Term Evolution (LTE) / LTE-Advanced (LTE-A) system, but 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 the present application are often used interchangeably, and the technology described can be used for the systems and radio technologies mentioned above, as well as for other systems and radio technologies. The following description describes a New Radio (NR) system for illustrative purposes, and the NR terminology is used in most of the following description, but these technologies can also be applied to systems other than NR systems, such as the 6th generation (6G) system. thGeneration, 6G) communication system.

[0033] FIG1 is a block diagram of a wireless communication system applicable to an embodiment of the present application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (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 (Wearable Device), an aircraft (Flight Vehicle), a vehicle-mounted device (VUE), a ship-mounted device, a pedestrian user equipment (PUE), a smart home (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), a game console, a personal computer (PC), an ATM, or a self-service machine, or other terminal-side devices. Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among them, the vehicle-mounted device can also be called a vehicle-mounted terminal, a vehicle-mounted controller, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip or a vehicle-mounted unit, etc. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may include an access network device or a core network device, wherein the access network device may also be called a radio access network (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 (AS) or a wireless fidelity (WiFi) node, etc.Among them, the base station can be referred to as Node B (NB), Evolved Node B (eNB), the 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 (home evolved Node B), Transmission Reception Point (TRP) or other appropriate terms in the field. As long as the same technical effect is achieved, the base station is not limited to specific technical vocabulary. It should be noted that in the embodiment of the present application, only the base station in the NR system is used as an example for introduction, and the specific type of the base station is not limited.

[0034] The signal sending or receiving method provided in the embodiments of the present application is described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0035] As shown in FIG2 , an embodiment of the present application provides a signal sending method 200 , which can be executed by a first device. In other words, the method can be executed by software or hardware installed on the first device. The method includes the following steps.

[0036] S202: The first device sends a signal based on a preset rule, where the preset rule includes at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged.

[0037] In various embodiments of the present application, the first device is a signal transmitting device, which may be a terminal or a network-side device; the signal receiving device (the second device) may also be a terminal or a network-side device. Signaling transmission between a network-side device and a terminal, or between terminals, may be via Radio Resource Control (RRC) signaling, Media Access Control Element (MAC CE) signaling, Layer 1 signaling, or other newly defined signaling; signaling transmission between network-side devices may be via Xn interface signaling.

[0038] The transmission resources in this embodiment may include but are not limited to bandwidth, frequency domain density, time domain resource length, time domain density, power, number of transmitting antennas, etc.

[0039] In this embodiment, the first device may send a signal based only on the first rule; the first device may also send a signal based only on the second rule; the first device may also send a signal based on the first rule and the third rule, for example, starting from the moment the signal is sent, the sending resources of the signal gradually increase, and when the sending resources increase to a certain value, the sending resources of the signal remain unchanged; the first device may also send a signal based on the second rule and the third rule, for example, starting from the moment the signal is sent, the sending resources of the signal gradually decrease, and when the sending resources decrease to a certain value, the sending resources of the signal remain unchanged; the first device may also send a signal based on the first rule and the second rule, for example, starting from the moment the signal is sent, the sending resources of the signal gradually increase, and when the sending resources increase to a certain value, the sending resources of the signal gradually decrease; the first device may also send a signal based on a combination of the first rule, the second rule and the third rule, for example, starting from the moment the signal is sent, the sending resources of the signal gradually increase, and when the sending resources increase to a certain value, the sending resources of the signal remain unchanged, and after a certain period of time, the sending resources of the signal gradually decrease; and so on.

[0040] In this embodiment, the first device may autonomously determine (adjust) the preset rule for sending the signal, and the first device may also notify the second device of the preset rule, or the preset rule is pre-agreed upon by the first device and the second device.

[0041] In this embodiment, the first device may further adjust the preset rule for sending the signal based on the feedback signaling from the second device.

[0042] Optionally, in various embodiments of the present application, the signal sent by the first device may be a sensing signal, which is used for sensing measurement. In this embodiment, the sensing signal may be sent based on the characteristics of the sensing service to meet the measurement performance of basic sensing measurement quantities such as delay or distance, Doppler or speed, and angle.

[0043] In the signal transmission method provided in an embodiment of the present application, a first device transmits a signal based on a preset rule, wherein the preset rule includes at least one of the following: gradually increasing the signal transmission resource; gradually decreasing the signal transmission resource; or maintaining the signal transmission resource unchanged. This embodiment of the present application improves the flexibility of signal transmission; while meeting the functional requirements of the signal, it is easy to reduce or minimize the signal transmission resource overhead, or save the feedback signaling overhead used for adaptively adjusting the signal transmission resource.

[0044] Regarding the aforementioned ease of reducing or minimizing signal transmission resource overhead, for example, the first device transmits a perception signal according to the second rule, and the second device can continuously provide feedback on whether the perception signal can meet the perception requirement. When the transmission resource of the perception signal reaches the minimum value (if the transmission resource continues to decrease, the perception requirement may not be met), the first device transmits the perception signal according to the third rule, thereby reducing the signal transmission resource overhead. For another example, the first device transmits a perception signal according to the first rule, and the second device can continuously provide feedback on whether the perception signal can meet the perception requirement. If the perception requirement is met, the first device transmits the perception signal according to the third rule, thereby reducing the signal transmission resource overhead.

[0045] Regarding the aforementioned savings in feedback signaling overhead (used for adaptively adjusting signal transmission resources), for example, a first device transmits a signal based on a first rule. When the transmission resource increases to a certain value, the first device measures that the signal meets the functional requirements, and then the first device continues to transmit the signal according to a third rule. Since the second device does not need to send feedback signaling, feedback signaling overhead is saved.

[0046] Optionally, the first rule includes at least one of the following:

[0047] 1) The bandwidth of the signal at each sending moment or each time window gradually increases.

[0048] 2) The frequency domain density of the signal at each sending moment or each time window gradually increases.

[0049] 3) The time domain resource length of each time window gradually increases.

[0050] 4) The time domain density of the signal at each sending moment or each time window gradually increases, that is, the time domain period gradually decreases or the sending time interval gradually decreases.

[0051] 5) The power of the signal at each sending moment or each time window gradually increases.

[0052] 6) The number of transmitting antennas corresponding to each port of the signal at each sending moment or each time window gradually increases.

[0053] The time window mentioned in each embodiment of the present application may be a time window for each calculation of the measurement result of the signal. For example, a two-dimensional Fast Fourier Transform (FFT) operation is performed to obtain the time domain resource length corresponding to the range-Doppler map, and the time window may include multiple time slots or symbols.

[0054] Figure 3 shows the situation where the signal time domain density gradually increases at different signal sending moments; Figure 4 shows the situation where the signal time domain density gradually increases at different time windows, where sending interval 1> sending interval 2> sending interval 3>….

[0055] Optionally, the second rule includes at least one of the following:

[0056] 1) The bandwidth of the signal at each sending moment or each time window gradually decreases.

[0057] 2) The frequency domain density of the signal at each sending moment or each time window gradually decreases.

[0058] 3) The time domain resource length of each time window gradually decreases.

[0059] 4) The time domain density of the signal at each sending moment or each time window gradually decreases, that is, the time domain period gradually increases or the sending time interval gradually increases.

[0060] 5) The power of the signal at each sending moment or each time window is gradually reduced.

[0061] 6) The number of transmitting antennas corresponding to each port of the signal at each sending moment or each time window gradually decreases.

[0062] The time window is the time window for calculating the measurement result of the signal each time.

[0063] Optionally, the third rule includes: the sending resources of the signal at each sending moment or each time window remain unchanged, and the sending resources may include bandwidth, frequency domain density, time domain resource length, time domain density, power, number of transmitting antennas, etc.

[0064] Optionally, in various embodiments of the present application, the signal sent by the first device may be a perception signal, and the transmission resource of the perception signal is not less than a minimum threshold or not more than a maximum threshold, thereby limiting the range of variation of the perception signal transmission resource. The minimum threshold or maximum threshold may be defined by a protocol, configured by a network-side device, or negotiated between the first device and the second device.

[0065] The sending resource of the perception signal is not less than the minimum threshold, which includes at least one of the following:

[0066] 1) The transmission signal bandwidth of the perception signal is not less than the minimum transmission bandwidth, for example, not less than x MHz or not less than y physical resource blocks (PRBs), wherein the minimum transmission bandwidth meets the perception distance resolution requirement or the delay resolution requirement in the perception performance requirement.

[0067] 2) The frequency domain density of the transmitted signal of the perception signal is not less than the minimum frequency domain density, for example, the interval is m resource elements (RE), or each resource block (RB) occupies n REs, wherein the minimum frequency domain density meets the maximum unambiguous perception distance requirement or the maximum unambiguous perception delay requirement in the perception performance requirement.

[0068] 3) The time domain resource length of the perception signal (or each group of perception signals) in each time window is not less than the minimum transmission signal duration, wherein the minimum transmission signal duration meets the perception speed resolution requirement or the Doppler resolution requirement in the perception performance requirement, and the time window is the time window for each calculation of the perception measurement result of the perception signal.

[0069] 4) The time domain density of the transmitted signal of the perception signal is not lower than the minimum time domain density, or the time domain period of the transmitted signal is not greater than the maximum time domain transmission period, or the transmission signal interval is not greater than the maximum time domain interval, wherein the minimum time domain density, the maximum time domain transmission period or the maximum time domain interval meets the maximum unambiguous perception speed requirement or the maximum unambiguous perception Doppler measurement requirement in the perception performance requirements.

[0070] 5) The transmission signal power of the perception signal is not less than the minimum transmission power, wherein the minimum transmission power meets the perception coverage requirement in the perception performance requirement.

[0071] 6) The number of transmitting antennas of each port of the perception signal or the total number of transmitting antennas of the perception signal is not less than the minimum number of transmitting antennas, wherein the minimum number of transmitting antennas meets the perception coverage requirement or the perception accuracy requirement in the perception performance requirement.

[0072] Optionally, the sending resource of the perception signal is not higher than a maximum threshold includes at least one of the following:

[0073] 1) The transmission signal bandwidth of the perception signal is no greater than the maximum transmission bandwidth, where the maximum transmission bandwidth is related to at least one of the following: system bandwidth, perception signal resource overhead, and communication signal resource overhead. For example, the maximum transmission bandwidth is the system bandwidth, or the maximum transmission bandwidth is half the system bandwidth.

[0074] 2) The frequency domain density of the transmitted signal of the perception signal is no higher than the maximum frequency domain density, where the maximum frequency domain density is: the number of multiple frequency domain resource units occupied on the frequency domain resources or the maximum frequency domain density is a first specific value, and the first specific value is related to at least one of the following: perception signal resource overhead and communication signal resource overhead. For example, the first device is a terminal, and the maximum frequency domain density configured by the network-side device for the terminal is: 12 REs in a certain RB, that is, all 12 consecutive REs in a certain RB are used to transmit the perception signal. In this case, the corresponding maximum frequency domain density value is 12.

[0075] Optionally, the frequency domain density can also be expressed by the frequency domain resource interval, the maximum frequency domain density corresponds to the minimum frequency domain resource interval, and the frequency domain density of the transmitted signal of the perception signal is not higher than the maximum frequency domain density. It can also be expressed as the frequency domain resource interval of the transmitted signal of the perception signal is not lower than the minimum frequency domain resource interval, and the minimum frequency domain resource interval is 0 (that is, the frequency domain resources are continuous), or it is a first specific value, and the first specific value is related to at least one of the following: perception signal resource overhead, communication signal resource overhead.

[0076] 3) The time domain resource length of the perception signal (or each group of perception signals) in each time window is not longer than the maximum transmitted signal duration, where the maximum transmitted signal duration is related to at least one of the following: perception signal resource overhead and communication signal resource overhead, and the time window is the time window for each calculation of the perception measurement result of the perception signal.

[0077] 4) The time domain density of the sent signal of the perception signal is not higher than the maximum time domain density, or the time domain period of the sent signal is not less than the minimum time domain sending period, or the sending signal interval is not less than the minimum time domain interval, wherein the maximum time domain density, the minimum time domain sending period or the minimum time domain interval is: the number of multiple time domain resource units occupied on the time domain resource or the maximum time domain density is a second specific value, and the second specific value is related to at least one of the following: perception signal resource overhead, communication signal resource overhead. For example, the first device is a terminal, and the maximum time domain density configured by the network side device for the terminal is: 14 orthogonal frequency division multiplexing (OFDM) symbols in a time slot, that is, all consecutive OFDM symbols in the time slot are used to send perception signals (in this case, the corresponding maximum time domain density value is 14), and so on.

[0078] Optionally, the time domain density can also be expressed by the time domain resource interval, the maximum time domain density corresponds to the minimum time domain resource interval, the time domain density of the sent signal of the perception signal is not higher than the maximum time domain density, or it can be expressed as the time domain resource interval of the sent signal of the perception signal is not lower than the minimum time domain resource interval, the minimum time domain resource interval is 0, or is a first specific value, the first specific value is related to at least one of the following: perception signal resource overhead, communication signal resource overhead.

[0079] 5) The transmission signal power of the perception signal is not higher than the maximum transmission power, wherein the maximum transmission power is related to at least one of the following: the perception power consumption requirement and the linear region limitation of the power amplifier (PA).

[0080] 6) The number of transmitting antennas of each port of the sensing signal is not higher than the total number of antennas on a certain panel, or is not higher than the agreed maximum number of antennas that can be used for transmitting the sensing signal.

[0081] 7) The total number of transmitting antennas for the perception signal is not higher than the maximum number of transmitting antennas, where the maximum number of transmitting antennas is the total number of antennas of the first device, or the agreed maximum number of antennas that can be used to send the perception signal.

[0082] Regarding the resource length and resource interval (or resource density) mentioned in the above embodiments, meeting the perception performance requirements may specifically include at least one of the following: the association between the time-frequency domain resource length and the perception resolution requirement; the association between the time-frequency domain resource interval (or density) and the perception measurement range requirement.

[0083] The association between the time-frequency domain resource length and the perception resolution requirement includes, for example, that the time-domain resource length T meets the Doppler or velocity resolution requirement, and the frequency-domain resource length B meets the delay / range resolution requirement. For example, for single-base radar perception: 1) The time-domain resource length satisfies T≥1 / Δf d Or T≥c / (2f c Δv), where Δf d is the Doppler resolution, Δv is the velocity resolution; 2) the frequency domain resource length satisfies B≥1 / Δτ or B≥c / (2ΔR), where Δτ is the delay resolution and ΔR is the distance resolution.

[0084] The association between the time-frequency domain resource spacing (or density) and the sensing measurement range requirements includes, for example: the time-domain spacing ΔT satisfies the Doppler / velocity unambiguous measurement requirements, and the frequency-domain spacing Δf satisfies the delay / distance unambiguous measurement requirements. For example, for single-base radar sensing: 1) If the velocity direction is considered, the time-domain resource spacing satisfies ΔT≤1 / (2|f dmax |) or ΔT≤c / (4f c |vmax |); If the time domain resource interval in the direction of speed is not considered and 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, c is the speed of light. 2) The frequency domain resource spacing satisfies Δf1≤1 / τ max Or Δf1≤c / (2R max ), where τ max is the maximum unambiguous delay, v max is the maximum unambiguous speed.

[0085] Optionally, in each of the above embodiments, the first device sending the perception signal based on a preset rule includes at least one of the following:

[0086] 1) The first device sends the perception signal based on the first rule. If the sending resource of the perception signal reaches the maximum threshold, then: sending the perception signal based on the third rule, that is, the sending resource of the perception signal is no longer increased, and the perception signal is sent according to the maximum threshold; or switching to sending the perception signal based on the second rule.

[0087] 2) The first device sends the perception signal based on the second rule. If the sending resource of the perception signal reaches the minimum threshold, then: sending the perception signal based on the third rule, that is, the sending resource of the perception signal is no longer reduced, and the perception signal is sent according to the minimum threshold value; or switching to sending the perception signal based on the first rule.

[0088] Optionally, in each of the above embodiments, before the first device sends a signal based on a preset rule, the method further includes: the first device sending first indication information to a second device, where the second device is a receiving device of the signal, wherein the first indication information is used to indicate at least one of the following:

[0089] 1) A rule identifier, which is used to indicate the preset rule, that is, to indicate that at least one of the first rule, the second rule, and the third rule is adopted.

[0090] 2) The step size for increasing or decreasing the transmission resources of the signal at each transmission moment or in each time window, where the time window is the time window for each calculation of the measurement results of the signal. For example: increasing or decreasing n PRB signal transmission resources each time (corresponding to a gradual increase or decrease in bandwidth); increasing or decreasing the time domain signal interval by n symbols or time slots each time (corresponding to a gradual increase or decrease in time domain density); increasing / decreasing the frequency domain signal interval by n REs each time (corresponding to a gradual increase or decrease in frequency domain density); increasing or decreasing the signal transmission power by n dBm each time; and increasing n transmit antenna resources each time, specifically including n1 horizontal transmit antenna resources or n2 vertical transmit antenna resources.

[0091] 3) Signal Transmission Resource Change Rate Level. This embodiment may pre-set different levels of signal change rates. Taking the gradual decrease in the frequency domain density of perception signal transmission as an example, level 1 indicates that the frequency domain interval of each perception signal transmission increases by 1 RE, level 2 indicates that the frequency domain interval of each perception signal transmission increases by 2 REs, level 3 indicates that the frequency domain interval of each perception signal transmission increases by 6 REs, and level 4 indicates that the frequency domain interval of each perception signal transmission increases by 1 RB (12 REs).

[0092] Optionally, in each of the above embodiments, before the first device sends a signal based on a preset rule, the method further includes: the first device sending second indication information to a second device, where the second device is a receiving device of the signal, and the second indication information is used to indicate an initial configuration of the signal, where the initial configuration of the signal includes at least one of the following:

[0093] 1) Signal resource identifier, used to distinguish different signal resource configurations.

[0094] 2) Waveforms, such as orthogonal frequency division multiplex (OFDM), single-carrier frequency division multiple access (SC-FDMA), orthogonal time frequency space (OTFS), frequency modulated continuous wave (FMCW), pulse signals, etc.

[0095] 3) Subcarrier spacing. For example, the subcarrier spacing of the OFDM system is 30KHz.

[0096] 4) Guard interval, which is the time interval from the moment the signal ends sending to the moment 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 ) is calculated, R max is the maximum perception distance (belonging to the perception demand information), for example, for the self-transmitted and self-received perception signal, R max Represents the maximum distance between the perceived signal receiving and transmitting point and 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.

[0097] 5) The starting position in the frequency domain, that is, the starting frequency point, can also be the starting RE and RB index.

[0098] 6) Frequency domain resource length, i.e., frequency domain bandwidth. The frequency domain bandwidth is inversely proportional to the range resolution. The frequency domain bandwidth B of each sensing signal is ≥ c / (2ΔR), where c is the speed of light and ΔR is the range resolution.

[0099] 7) Frequency domain resource spacing, where the frequency domain resource spacing is inversely proportional to the maximum unambiguous distance or delay. For an OFDM system, when subcarriers are continuously mapped, the frequency domain spacing is equal to the subcarrier spacing.

[0100] 8) The time domain starting position, that is, the starting time point, can also be the starting symbol, time slot, or frame index.

[0101] 9) The time domain resource length, also known as the burst duration, is associated with the above-mentioned time window. The time domain resource length is inversely proportional to the Doppler resolution.

[0102] 10) Time domain resource interval, where the time domain resource interval is the time interval between two adjacent sensing signals, and the time domain resource interval is associated with a maximum unambiguous Doppler frequency shift or a maximum unambiguous velocity.

[0103] 11) Transmit power, for example, a value from -20dBm to 23dBm with an interval of 2dBm.

[0104] 12) Sequence information; may include at least one of the following: a. sequence type information (sequence types included in the previous explanation of special design sequences, such as ZC sequence and PN sequence); b. sequence generation method, specifically, it may be first information associated with the PN sequence initial value, cyclic shift value, source polynomial, truncation position, ZC sequence root sequence number, cyclic shift value, etc. (as described in the embodiment); c. sequence length, including at least one of the total length MN, the frequency domain dimension sequence length N, and the time domain dimension sequence length M; d. sequence mapping method, that is, the method of mapping the first sequence to the time-frequency domain, such as first the time domain and then the frequency domain, first the frequency domain and then the time domain, etc.

[0105] 13) Signal direction, which senses the angle or beam information of the signal.

[0106] 14) Quasi-co-location (QCL) relationship, for example, the sensing signal includes multiple resources, each resource is associated with an SSB QCL, and the QCL includes Type A, B, C, or D.

[0107] 15) Antenna port information, such as the maximum number of antenna ports and antenna port index (different antenna ports may be associated with the first sequence generation method).

[0108] Optionally, in each of the above embodiments, before the first device sends a signal based on a preset rule, the method further includes: the first device sends third indication information to the second device, where the second device is a receiving device of the signal, and the third indication information is used to indicate measurement configuration information or reporting configuration information of the signal, where the measurement configuration information or reporting configuration information includes at least one of the following:

[0109] 1) Measurement quantity.

[0110] 2) Reporting configuration, where the reporting configuration is a criterion for reporting the signal measurement result (corresponding to the perception measurement quantity, ie, the value of the perception measurement quantity) and related feedback information.

[0111] 3) Parameters of a first window, where the first window is a time window during which the receiving device processes or receives the signal.

[0112] Optionally, the measurement quantity includes at least one of a first-level measurement quantity, a second-level measurement quantity, a third-level measurement quantity and a fourth-level measurement quantity.

[0113] The first-level measurement quantity is the received signal or original channel information, and the first-level measurement includes at least one of the following items of the received signal or channel: a complex response result, amplitude or phase, I-channel or Q-channel, or an operation result of I-channel or Q-channel. Operations include addition, subtraction, multiplication, and division, matrix addition, subtraction, multiplication, and division, matrix transposition, trigonometric operations, square root operations, and power operations, as well as threshold detection results and maximum / minimum value extraction results of the above operation results. 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 operation, wavelet transform, and digital filtering, as well as threshold detection results and maximum / minimum value extraction results of the above operation results.

[0114] The second-level measurement quantity (basic measurement quantity) includes at least one of the following channel items: delay, Doppler, angle, and strength.

[0115] The third-level measurement quantity (basic attribute or state) includes at least one of the following items of the perceived target: distance, speed, direction, spatial position, and acceleration.

[0116] The fourth-level measurement quantity (advanced attribute or state) includes at least one of the following items of the perception target (or perception object): presence, trajectory, movement, expression, vital sign, quantity, imaging result, weather, air quality, shape, material, and composition.

[0117] Optionally, the reporting configuration includes at least one of the following:

[0118] 1) Reported time-frequency domain resource configuration.

[0119] 2) Time domain behavior of reporting; for example, a: periodic reporting: reporting according to a specified time offset and / or period; b: semi-persistent reporting: after receiving a report start indication, reporting according to a specified period until a report stop indication is received; the report start indication is used to indicate the start of the corresponding perception report; the report stop indication is used to indicate the stop of reporting; c: aperiodic reporting: reporting at a specified time, or when preset conditions are met.

[0120] 3) Reporting trigger conditions, for example, the perception measurement result or the perception performance corresponding to the perception measurement result meets a preset condition, for example, the perception measurement result is within a preset interval, or the power value of the perception target associated signal component meets a preset threshold, etc.

[0121] Optionally, the first window is a time window in which the receiving device processes or receives the perception signal, including the first time window for processing or receiving the perception signal and each subsequent time window for processing / receiving the perception signal. Specific parameters may include the window start time and window duration. For example, the first first window starts at slot 0 and lasts for 10 slots; the second first window starts at slot 0 and lasts for 15 slots; and the third first window starts at slot 0 and lasts for 20 slots. The second device (receiving device) processes or receives the perception signal within each first window until the perception requirement is met or the perception measurement quantity meets a specific indicator. At this point, the second device no longer processes or receives the perception signal.

[0122] In each of the above embodiments, the first indication information, the second indication information, and the third indication information may be different signaling messages, or may be the same signaling message.

[0123] Optionally, the method provided in each of the above embodiments further includes the following step: the first device receives first feedback information from a second device, where the second device is a receiving device of the signal, and the first feedback information includes at least one of the following items related to the signal:

[0124] 1) A termination transmission instruction, when the first device receives the instruction, stops transmitting the perception signal. For example, the first device continues to transmit the perception signal based on the first rule, the second rule, or the third rule. When the second device is able to calculate the expected perception result based on the perception signal resources received from the first device and no longer needs to receive the perception signal, the second device sends the termination transmission instruction to the first device.

[0125] 2) Continue to send the indication. When the first device receives the indication, it continues to send the perception signal. For example, it continues to send the perception signal according to the first rule, the second rule or the third rule mentioned above. In one embodiment, the first feedback information of the second device is only 1 bit, 0 represents termination of transmission, and 1 represents continuation of transmission. The target rule for the second device to send 0 or 1 is configured, for example, it is configured by the first device to the second device. The definition of the target rule can refer to the previous trigger condition, or be further expanded.

[0126] 3) A switching indication of the preset rule. When the first device receives the indication, it switches the preset rule used to send the perception signal, for example, switching from the first rule to the third rule, that is, the perception signal sending resources are no longer increased, and the perception signal is sent according to the current configuration unchanged.

[0127] 4) Performance indicators, such as a perceived signal to interference plus noise ratio (SINR) or a signal to noise ratio (SNR), the first device determines whether a current perception signal transmission resource configuration needs to be adjusted according to the perceived performance indicators.

[0128] 5) An indication of whether the performance indicator is met, and the first device determines whether the current perception signal transmission resource configuration needs to be adjusted based on the indication. For example, when the first device is transmitting a perception signal based on the first rule, if it receives an indication that the perception performance indicator is met, the first device will no longer increase the perception signal transmission resource, maintain the current perception signal resource configuration unchanged, and transmit the perception signal, i.e., instead use the third rule to transmit the perception signal. Alternatively, when the first device is transmitting a perception signal based on the second rule, if it receives an indication that the perception performance indicator is met, the first device will no longer reduce the perception signal transmission resource, maintain the current perception signal resource configuration unchanged, and transmit the perception signal, i.e., instead use the third rule to transmit the perception signal.

[0129] 6) Start sending an indication, and the first device starts sending a perception signal according to the indication.

[0130] The perceived SNR and SINR are explained below: the perceived SNR may be a ratio of the perceived target associated signal power to the noise power, and the perceived SINR may be a ratio of the perceived target associated signal power to the sum of the powers of noise and interference.

[0131] Taking radar detection as an example, the method for obtaining the power of the target-related signal can be at least one of the following options:

[0132] 1) Based on the one-dimensional delay graph obtained by Fast Fourier Transform (FFT) processing of the echo signal in the fast time dimension, a constant false alarm rate detector (CFAR) is performed. The maximum amplitude sample point exceeding the CFAR threshold is used as the target sample point, and its amplitude is used as the target signal amplitude to calculate the perceived target associated signal power, as shown in Figure 5.

[0133] 2) Based on the delay-Doppler two-dimensional map obtained by 2D-FFT processing of the echo signal, the CFAR is performed. The maximum amplitude sample point exceeding the CFAR threshold is used as the target sample point, and its amplitude is used as the target signal amplitude to calculate the perceived target associated signal power.

[0134] 3) CFAR is performed based on the delay-Doppler-angle three-dimensional graph obtained by 3D-FFT processing of the echo signal. The maximum amplitude sample point exceeding the CFAR threshold is used as the target sample point, and its amplitude is used as the target signal amplitude to calculate the perceived target associated signal power.

[0135] In addition to the above method of using the maximum amplitude sampling point of CFAR crossing the threshold as the target sampling point, the method of determining the target signal amplitude can also be to use the maximum amplitude sampling point of CFAR crossing the threshold and the average of several adjacent crossing threshold sampling points as the target signal amplitude to calculate the perceived target associated signal power.

[0136] The method for obtaining the SNR or SINR of the echo signal may be at least one of the following options:

[0137] 1) Perform CFAR based on the one-dimensional delay graph obtained by fast time dimension FFT processing of the echo signal. The sample point with the maximum amplitude exceeding the CFAR threshold is used as the target sample point, and its amplitude is used as the target signal amplitude. All sample points in the one-dimensional graph that are ±ε sample points away from the target sample point are used as interference / noise sample points. The average interference / amplitude is calculated as the interference / noise signal amplitude. Finally, the SNR / SINR is calculated based on the target signal amplitude and the interference / noise signal amplitude.

[0138] 2) Perform CFAR based on the one-dimensional Doppler map obtained by slow-time FFT processing of the echo signal. The sample point with the maximum amplitude exceeding the CFAR threshold is used as the target sample point, and its amplitude is used as the target signal amplitude. All sample points in the one-dimensional map that are ±n sample points away from the target sample point are used as interference / noise sample points, and their average amplitude is calculated as the interference / noise signal amplitude. Finally, the SNR / SINR is calculated using the target signal amplitude and the interference / noise signal amplitude.

[0139] 3) Based on the delay-Doppler two-dimensional map obtained by 2D-FFT processing of the echo signal, the CFAR is performed. The sample point with the maximum amplitude that exceeds the CFAR threshold is used as the target sample point, and its amplitude is used as the target signal amplitude. All sample points in the two-dimensional map that are ±ε (fast time dimension) and ±η (slow time dimension) away from the target sample point are used as interference / noise sample points, and their average amplitude is calculated as the interference / noise signal amplitude. Finally, the SNR / SINR is calculated using the target signal amplitude and the interference / noise signal amplitude;

[0140] 4) CFAR is performed based on the delay-Doppler-angle three-dimensional graph obtained by 3D-FFT processing of the echo signal. The sample point with the maximum amplitude exceeding the CFAR threshold is taken as the target sample point, and its amplitude is taken as the target signal amplitude. All sample points in the three-dimensional graph that are ±ε (fast time dimension), ±η (slow time dimension), and ±δ (angle dimension) sample points away from the target sample point are taken as interference / noise sample points, and their average amplitude is calculated as the interference / noise signal amplitude. Finally, the SNR / SINR is calculated using the target signal amplitude and the interference / noise signal amplitude.

[0141] In addition to the above method of using the maximum amplitude sampling point of CFAR over-threshold as the target sampling point, the target signal amplitude can also be determined by using the maximum amplitude sampling point of CFAR over-threshold and the average of several adjacent over-threshold sampling points as the target signal amplitude.

[0142] The method for determining the interference / noise sample points can also be further screening based on the interference / noise sample points determined above. The screening method is: for the one-dimensional delay graph, remove several sample points near the delay of 0, and use the remaining interference / noise sample points as noise sample points; for the one-dimensional Doppler graph, remove several sample points near the Doppler of 0, and use the remaining interference / noise sample points as interference / noise sample points; for the two-dimensional delay-Doppler graph, remove the interference / noise sample points in the strip range composed of several points near the delay of 0 and the entire Doppler range, and use the remaining noise sample points as interference / noise sample points; for the three-dimensional delay-Doppler-angle graph, remove the interference / noise sample points in the slice range composed of several points near the time dimension of 0, the entire Doppler range and the entire angle range, and use the remaining interference / noise sample points as interference / noise sample points.

[0143] The signal transmission method according to an embodiment of the present application is described in detail above in conjunction with Figures 2 to 5. The signal receiving method according to another embodiment of the present application will be described in detail below in conjunction with Figure 6. It can be understood that the interaction between the second device and the first device described from the second device side is the same as or corresponds to the description of the first device side in the method shown in Figure 2. To avoid repetition, the relevant description is appropriately omitted.

[0144] FIG6 is a flow chart of a signal receiving method according to an embodiment of the present application, which can be applied to a second device. As shown in FIG6 , the method 600 includes the following steps.

[0145] S602: The second device receives a signal based on a preset rule, where the preset rule includes at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged.

[0146] In an embodiment of the present application, the second device receives a signal based on a preset rule, which includes at least one of the following: gradually increasing the signal transmission resource; gradually decreasing the signal transmission resource; or maintaining the signal transmission resource unchanged. This embodiment of the present application improves the flexibility of signal transmission; while meeting the functional requirements of the signal, it is easy to reduce or minimize the signal transmission resource overhead, or save the feedback signaling overhead used to adaptively adjust the signal transmission resource.

[0147] Optionally, as an embodiment, the signal is a perception signal, and the perception signal is used for perception measurement.

[0148] Optionally, as an embodiment, the method also includes: the second device sends first feedback information to the first device, the first device is the sending device of the signal, and the first feedback information includes at least one of the following items related to the signal: 1) termination sending indication; 2) continue sending indication; 3) switching indication of the preset rule; 4) performance indicator; 5) indication of whether the performance indicator is met; 6) start sending indication.

[0149] Figure 7 is a schematic diagram of the structure of a first device according to an embodiment of the present application, where the first device may be a terminal or a network-side device terminal. As shown in Figure 7 , the device 700 includes the following modules.

[0150] The sending module 702 is used to send a signal based on a preset rule, wherein the preset rule includes at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged.

[0151] In an embodiment of the present application, a first device transmits a signal based on a preset rule, wherein the preset rule includes at least one of the following: gradually increasing the signal transmission resource; gradually decreasing the signal transmission resource; or maintaining the signal transmission resource unchanged. This embodiment of the present application improves the flexibility of signal transmission; while meeting the functional requirements of the signal, it is easy to reduce or minimize the signal transmission resource overhead, or save the feedback signaling overhead used for adaptively adjusting the signal transmission resource.

[0152] Optionally, the first rule includes at least one of the following:

[0153] 1) The bandwidth of the signal at each sending moment or each time window gradually increases.

[0154] 2) The frequency domain density of the signal at each sending moment or each time window gradually increases.

[0155] 3) The time domain resource length of each time window gradually increases.

[0156] 4) The time domain density of the signal at each sending moment or each time window gradually increases, that is, the time domain period gradually decreases or the sending time interval gradually decreases.

[0157] 5) The power of the signal at each sending moment or each time window gradually increases.

[0158] 6) The number of transmitting antennas corresponding to each port of the signal at each sending moment or each time window gradually increases.

[0159] The time window mentioned in each embodiment of the present application may be a time window for each calculation of the measurement result of the signal. For example, a two-dimensional Fast Fourier Transform (FFT) operation is performed to obtain the time domain resource length corresponding to the range-Doppler map, and the time window may include multiple time slots or symbols.

[0160] Optionally, the second rule includes at least one of the following:

[0161] 1) The bandwidth of the signal at each sending moment or each time window gradually decreases.

[0162] 2) The frequency domain density of the signal at each sending moment or each time window gradually decreases.

[0163] 3) The time domain resource length of each time window gradually decreases.

[0164] 4) The time domain density of the signal at each sending moment or each time window gradually decreases, that is, the time domain period gradually increases or the sending time interval gradually increases.

[0165] 5) The power of the signal at each transmission moment or each time window is gradually reduced;

[0166] 6) The number of transmitting antennas corresponding to each port of the signal at each sending moment or each time window gradually decreases;

[0167] The time window is the time window for calculating the measurement result of the signal each time.

[0168] Optionally, as an embodiment, the signal is a perception signal, and the perception signal is used for perception measurement.

[0169] Optionally, as an embodiment, the sending resource of the perception signal is not lower than a minimum threshold or not higher than a maximum threshold.

[0170] Optionally, as an embodiment, the sending module 702 is used for at least one of the following: 1) sending the perception signal based on the first rule, and if the sending resources of the perception signal reach the maximum threshold, sending the perception signal based on the third rule or the second rule; 2) sending the perception signal based on the second rule, and if the sending resources of the perception signal reach the minimum threshold, sending the perception signal based on the third rule or the first rule.

[0171] Optionally, as an embodiment, the sending module 702 is also used to send a first indication information to a second device, which is a receiving device of the signal, and the first indication information is used to indicate at least one of the following: 1) a rule identifier, which is used to indicate the preset rule; 2) a step size for increasing or decreasing the sending resources of the signal at each sending moment or each time window, and the time window is a time window for calculating the measurement results of the signal each time; 3) a level of change rate of the sending resources of the signal.

[0172] Optionally, as an embodiment, the sending module 702 is also used to send second indication information to a second device, which is a receiving device of the signal, and the second indication information is used to indicate the initial configuration of the signal, and the initial configuration of the signal includes at least one of the following: signal resource identification; waveform; subcarrier spacing; protection interval, and the protection interval is: the time interval from the moment when the signal ends sending to the moment when the latest echo signal of the signal is received; frequency domain starting position; frequency domain resource length; frequency domain resource interval; time domain starting position; time domain resource length; time domain resource interval; transmission power; sequence information; signal direction; quasi-co-site QCL relationship; antenna port information.

[0173] Optionally, as an embodiment, the sending module 702 is also used to send a third indication information to a second device, where the second device is a receiving device of the signal, and the third indication information is used to indicate the measurement configuration information or reporting configuration information of the signal, and the measurement configuration information or reporting configuration information includes at least one of the following: 1) measurement quantity; 2) reporting configuration, where the reporting configuration is a criterion for reporting the measurement results of the signal and related feedback information; 3) parameters of the first window, where the first window is a time window for the receiving device to process or receive the signal.

[0174] Optionally, as an embodiment, it further includes a receiving module 704 for receiving first feedback information from a second device, where the second device is a receiving device of the signal, and the first feedback information includes at least one of the following items related to the signal: 1) an indication to terminate sending; 2) an indication to continue sending; 3) an indication to switch according to the preset rule; 4) a performance indicator; 5) an indication of whether the performance indicator is met; 6) an indication to start sending.

[0175] According to the device 700 of the embodiment of the present application, the process of the method 200 corresponding to the embodiment of the present application can be referred to, and the various units / modules in the device 700 and the above-mentioned other operations and / or functions are respectively for implementing the corresponding processes in the method 200, and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be repeated here.

[0176] The 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 chip. The electronic device can be a terminal, or it can be other devices other than a terminal. For example, the terminal can include but is not limited to the types of terminal 11 listed above, and other devices can be servers, network attached storage (NAS), etc., which are not specifically limited in the embodiments of the present application.

[0177] Figure 8 is a schematic diagram of the structure of a second device according to an embodiment of the present application, where the second device may be a terminal or a network-side device. As shown in Figure 8 , the device 800 includes the following modules.

[0178] The receiving module 802 is used to receive a signal based on a preset rule, wherein the preset rule includes at least one of the following: a first rule: the sending resource of the signal gradually increases; a second rule: the sending resource of the signal gradually decreases; a third rule: the sending resource of the signal remains unchanged.

[0179] In an embodiment of the present application, the second device receives a signal based on a preset rule, which includes at least one of the following: gradually increasing the signal transmission resource; gradually decreasing the signal transmission resource; or maintaining the signal transmission resource unchanged. This embodiment of the present application improves the flexibility of signal transmission; while meeting the functional requirements of the signal, it is easy to reduce or minimize the signal transmission resource overhead, or save the feedback signaling overhead used to adaptively adjust the signal transmission resource.

[0180] Optionally, as an embodiment, the signal is a perception signal, and the perception signal is used for perception measurement.

[0181] Optionally, as an embodiment, it further includes a sending module 804, which is used to send first feedback information to a first device, where the first device is the sending device of the signal, and the first feedback information includes at least one of the following items related to the signal: 1) an indication to terminate sending; 2) an indication to continue sending; 3) an indication to switch according to the preset rule; 4) a performance indicator; 5) an indication of whether the performance indicator is met; 6) an indication to start sending.

[0182] According to the device 800 of the embodiment of the present application, the process of the method 300 corresponding to the embodiment of the present application can be referred to, and the various units / modules in the device 800 and the above-mentioned other operations and / or functions are respectively for implementing the corresponding processes in the method 300, and can achieve the same or equivalent technical effects. For the sake of brevity, they will not be repeated here.

[0183] The device provided in the embodiment of the present application can implement the various processes implemented in the method embodiments of Figures 2 to 6 and achieve the same technical effects. To avoid repetition, they will not be described here.

[0184] Optionally, as shown in Figure 9, an embodiment of the present application further provides a communication device 900, including a processor 901 and a memory 902, wherein the memory 902 stores a program or instruction that can be run on the processor 901. For example, when the communication device 900 is a terminal, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned signal sending or receiving method embodiment, and can achieve the same technical effect. When the communication device 900 is a network-side device, the program or instruction is executed by the processor 901 to implement the various steps of the above-mentioned signal sending or receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0185] An embodiment of the present application also provides a terminal, including a processor and a communication interface, wherein the communication interface is used to send signals based on preset rules, and the preset rules include at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged; or, the communication interface is used to receive signals based on preset rules, and the preset rules include at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged. This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this terminal embodiment and can achieve the same technical effect. Specifically, Figure 10 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.

[0186] The terminal 1000 includes but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009 and at least some of the components of the processor 1010.

[0187] Those skilled in the art will appreciate that the terminal 1000 may also include a power supply (such as a battery) to power various components. The power supply may be logically connected to the processor 1010 via a power management system, thereby enabling the power management system to manage charging, discharging, and power consumption. The terminal structure shown in FIG10 does not limit the terminal. The terminal may include more or fewer components than shown, or may combine certain components, or have different component arrangements, which will not be described in detail here.

[0188] It should be understood that in an embodiment of the present application, the input unit 1004 may include a graphics processing unit (GPU) 10041 and a microphone 10042, and the graphics processor 10041 processes the image data of a static picture or video obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, etc. The user input unit 1007 includes a touch panel 10071 and at least one of other input devices 10072. The touch panel 10071 is also called a touch screen. The touch panel 10071 may include two parts: a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (such as volume control keys, switch keys, etc.), a trackball, a mouse, and an operating stick, which will not be repeated here.

[0189] In the embodiment of the present application, after receiving downlink data from a network-side device, the RF unit 1001 may transmit the data to the processor 1010 for processing. Furthermore, the RF unit 1001 may send uplink data to the network-side device. Typically, the RF unit 1001 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, and the like.

[0190] The memory 1009 can be used to store software programs or instructions and various data. The memory 1009 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, applications or instructions required for at least one function (such as a sound playback function, an image playback function, etc.). In addition, the memory 1009 may include a volatile memory or 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 (SDRAM), a double data rate synchronous dynamic random access memory (DDRSDRAM), an enhanced synchronous dynamic random access memory (ESDRAM), a synchronous link dynamic random access memory (SLDRAM), and a direct memory bus random access memory (DRRAM). The memory 1009 in the embodiment of the present application includes but is not limited to these and any other suitable types of memory.

[0191] Processor 1010 may include one or more processing units. Optionally, processor 1010 integrates an application processor and a modem processor. The application processor primarily handles operations related to the operating system, user interface, and application programs, while the modem processor primarily processes wireless communication signals, such as a baseband processor. It is understood that the modem processor may not be integrated into processor 1010.

[0192] Among them, the radio frequency unit 1001 can be used to send signals based on preset rules, and the preset rules include at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged; or, the communication interface is used to receive signals based on preset rules, and the preset rules include at least one of the following: a first rule: the sending resources of the signal gradually increase; a second rule: the sending resources of the signal gradually decrease; a third rule: the sending resources of the signal remain unchanged.

[0193] In an embodiment of the present application, the sending or receiving of signals based on preset rules is increased, and the preset rules include at least one of the following: gradually increasing the signal transmission resources; gradually decreasing the signal transmission resources; or keeping the signal transmission resources unchanged. This embodiment of the present application improves the flexibility of signal transmission; while meeting the functional requirements of the signal, it is easy to reduce or minimize the signal transmission resource overhead, or save the feedback signaling overhead used for adaptively adjusting the signal transmission resources.

[0194] It can be understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of the signal sending or receiving method embodiment, and achieve the same or corresponding technical effects. To avoid repetition, it will not be repeated here.

[0195] The embodiment of the present application also provides a network-side device, including a processor and a communication interface, the communication interface is used to send signals based on preset rules, and the preset rules include at least one of the following: first rule: the sending resources of the signal gradually increase; second rule: the sending resources of the signal gradually decrease; third rule: the sending resources of the signal remain unchanged; or, the communication interface is used to receive signals based on preset rules, and the preset rules include at least one of the following: first rule: the sending resources of the signal gradually increase; second rule: the sending resources of the signal gradually decrease; third rule: the sending resources of the signal remain unchanged. This network-side device embodiment corresponds to the above-mentioned network-side device method embodiment, and each implementation process and implementation method of the above-mentioned method embodiment can be applied to this network-side device embodiment and can achieve the same technical effect.

[0196] The present application also provides a network-side device. As shown in Figure 11, the network-side device 1100 includes an antenna 111, a radio frequency device 112, a baseband device 113, a processor 114, and a memory 115. Antenna 111 is connected to radio frequency device 112. In the uplink direction, radio frequency device 112 receives information via antenna 111 and sends the received information to baseband device 113 for processing. In the downlink direction, baseband device 113 processes the information to be transmitted and sends it to radio frequency device 112. Radio frequency device 112 processes the received information and then sends it through antenna 111.

[0197] The method executed by the network-side device in the above embodiment may be implemented in the baseband device 113 , which includes a baseband processor.

[0198] The baseband device 113 may include, for example, at least one baseband board, on which multiple chips are arranged, as shown in Figure 11, one of the chips is, for example, a baseband processor, which is connected to the memory 115 through a bus interface to call the program in the memory 115 to execute the network device operations shown in the above method embodiment.

[0199] The network side device may further include a network interface 116, which is, for example, a Common Public Radio Interface (CPRI).

[0200] The network side device 1100 of the embodiment of the present application also includes: instructions or programs stored in the memory 115 and executable on the processor 114. The processor 114 calls the instructions or programs in the memory 115 to execute the methods executed by the modules shown in FIG. 7 or FIG. 8 and achieve the same technical effect. To avoid repetition, they will not be described here.

[0201] An embodiment of the present application also provides a readable storage medium, on which a program or instruction is stored. When the program or instruction is executed by a processor, the various processes of the above-mentioned signal sending or receiving method embodiment are implemented, and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0202] The processor is the processor in the terminal described in the above embodiment. The readable storage medium can be non-volatile or non-transitory. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium can be non-transitory.

[0203] An embodiment of the present application further provides a chip, which includes a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement the various processes of the above-mentioned signal sending or receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0204] It should be understood that the chip mentioned in the embodiments of the present application can also be called a system-level chip, a system chip, a chip system or a system-on-chip chip, etc.

[0205] An embodiment of the present application further provides a computer program / program product, which is stored in a storage medium. The computer program / program product is executed by at least one processor to implement the various processes of the above-mentioned signal sending or receiving method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0206] An embodiment of the present application also provides a signal sending or receiving system, including: a terminal and a network side device, wherein the terminal can be used to execute the steps of the signal sending or receiving method described above, and the network side device can be used to execute the steps of the signal sending or receiving method described above.

[0207] It should be noted that, in this article, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved. For example, the described method may be performed in an order different from that described, and various steps may also be added, omitted or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0208] Through the description of the above embodiments, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of a computer software product plus a necessary general-purpose hardware platform, or of course, by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.) and includes a number of instructions for enabling a terminal or network-side device to execute the methods described in each embodiment of the present application.

[0209] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms of implementation methods without departing from the purpose of this application and the scope of protection of the claims. These implementation methods are all within the protection of this application.

Claims

1. A signal sending method, comprising: The first device sends a signal based on a preset rule, where the preset rule includes at least one of the following: First rule: the sending resources of the signal gradually increase; Second rule: the sending resources of the signal are gradually reduced; Third rule: the sending resource of the signal remains unchanged.

2. The method according to claim 1, wherein: The first rule includes at least one of the following: The bandwidth of the signal at each sending moment or each time window gradually increases; The frequency domain density of the signal at each sending moment or each time window gradually increases; The length of the time domain resources of each time window gradually increases; The time domain density of the signal at each sending moment or each time window gradually increases; The power of the signal at each sending moment or each time window gradually increases; The number of transmitting antennas corresponding to each port of the signal at each sending moment or each time window gradually increases; The time window is the time window for calculating the measurement result of the signal each time.

3. The method according to claim 1, wherein: The second rule includes at least one of the following: The bandwidth of the signal at each transmission moment or each time window gradually decreases; The frequency domain density of the signal at each sending moment or each time window gradually decreases; The length of the time domain resources of each time window gradually decreases; The time domain density of the signal at each sending moment or each time window gradually decreases; The power of the signal at each sending moment or each time window gradually decreases; The number of transmitting antennas corresponding to each port of the signal at each sending moment or each time window gradually decreases; The time window is the time window for calculating the measurement result of the signal each time.

4. The method according to any one of claims 1 to 3, wherein: The signal is a perception signal, and the perception signal is used for perception measurement.

5. The method according to claim 4, wherein: The sending resource of the perception signal is not lower than a minimum threshold or higher than a maximum threshold.

6. The method according to claim 5, wherein: The sending resource of the perception signal is not less than the minimum threshold, including at least one of the following: The transmission signal bandwidth of the perception signal is not less than the minimum transmission bandwidth, wherein the minimum transmission bandwidth meets the perception distance resolution requirement or the delay resolution requirement in the perception performance requirement; The transmission signal frequency domain density of the perception signal is not less than the minimum frequency domain density, wherein the minimum frequency domain density meets the maximum unambiguous perception distance requirement or the maximum unambiguous perception delay requirement in the perception performance requirement; The time domain resource length of the perception signal in each time window is not less than the minimum transmission signal duration, wherein the minimum transmission signal duration meets the perception speed resolution requirement or the Doppler resolution requirement in the perception performance requirement, and the time window is the time window for calculating the perception measurement result of the perception signal each time; The transmission signal time domain density of the perception signal is not less than the minimum time domain density, wherein the minimum time domain density meets the maximum unambiguous perception speed requirement or the maximum unambiguous perception Doppler measurement requirement in the perception performance requirement; The transmission signal power of the perception signal is not less than the minimum transmission power, wherein the minimum transmission power meets the perception coverage requirement in the perception performance requirement; The number of transmitting antennas of each port of the perception signal or the total number of transmitting antennas of the perception signal is not less than the minimum number of transmitting antennas, wherein the minimum number of transmitting antennas meets the perception coverage requirement or the perception accuracy requirement in the perception performance requirement.

7. The method according to claim 5, wherein: The sending resource of the perception signal is not higher than the maximum threshold, including at least one of the following: The transmission signal bandwidth of the perception signal is not higher than the maximum transmission bandwidth, wherein the maximum transmission bandwidth is related to at least one of the following: system bandwidth, perception signal resource overhead, and communication signal resource overhead; The transmission signal frequency domain density of the perception signal is not higher than the maximum frequency domain density, wherein the maximum frequency domain density is: the number of multiple frequency domain resource units occupied on the frequency domain resource or the maximum frequency domain density is a first specific value, and the first specific value is related to at least one of the following: perception signal resource overhead, communication signal resource overhead; The time domain resource length of the perception signal in each time window is not longer than the maximum transmission signal duration, wherein the maximum transmission signal duration is related to at least one of the following: perception signal resource overhead, communication signal resource overhead, and the time window is a time window for calculating the perception measurement result of the perception signal each time; The sent signal time domain density of the perception signal is not higher than the maximum time domain density, wherein the maximum time domain density is: the number of multiple time domain resource units occupied on the time domain resource or the maximum time domain density is a second specific value, and the second specific value is related to at least one of the following: perception signal resource overhead, communication signal resource overhead; The transmission signal power of the perception signal is not higher than the maximum transmission power, wherein the maximum transmission power is related to at least one of the following: the perception power consumption requirement, the linear region limitation of the power amplifier PA; The number of transmitting antennas of each port of the sensing signal is not higher than the total number of antennas on a certain panel, or is not higher than the agreed maximum number of antennas that can be used for sending the sensing signal; The total number of transmitting antennas of the perception signal is not higher than the maximum number of transmitting antennas, wherein the maximum number of transmitting antennas is the total number of antennas of the first device, or is the agreed maximum number of antennas that can be used for sending the perception signal.

8. The method according to claim 5, wherein: The first device sending the perception signal based on the preset rule includes at least one of the following: The first device sends the perception signal based on the first rule, and if the sending resource of the perception signal reaches the maximum threshold, sends the perception signal based on the third rule or the second rule; The first device sends the perception signal based on the second rule, and if the sending resource of the perception signal reaches the minimum threshold, sends the perception signal based on the third rule or the first rule.

9. The method according to any one of claims 1 to 8, wherein: Before the first device sends a signal based on a preset rule, the method further includes: the first device sends first indication information to a second device, where the second device is a receiving device of the signal, and the first indication information is used to indicate at least one of the following: A rule identifier, wherein the rule identifier is used to indicate the preset rule; a step size of increasing or decreasing the transmission resource of the signal at each transmission moment or each time window, the time window being the time window for calculating the measurement result of the signal each time; The rate at which the sending resource of the signal changes.

10. The method according to any one of claims 1 to 8, wherein: Before the first device sends a signal based on a preset rule, the method further includes: the first device sends second indication information to a second device, the second device is a receiving device of the signal, the second indication information is used to indicate an initial configuration of the signal, and the initial configuration of the signal includes at least one of the following: Signal resource identification; waveform; subcarrier spacing; guard interval, wherein the guard interval is: the time interval from the moment the signal ends sending to the moment the latest echo signal of the signal is received; frequency domain starting position; frequency domain resource length; frequency domain resource interval; time domain starting position; time domain resource length; time domain resource interval; transmission power; sequence information; signal direction; quasi-co-site QCL relationship; antenna port information.

11. The method according to any one of claims 1 to 8, wherein: Before the first device sends a signal based on a preset rule, the method further includes: the first device sends third indication information to a second device, the second device is a receiving device of the signal, the third indication information is used to indicate measurement configuration information or reporting configuration information of the signal, and the measurement configuration information or reporting configuration information includes at least one of the following: Measurement quantity; A reporting configuration, wherein the reporting configuration is a criterion for reporting the measurement result of the signal and related feedback information; Parameters of a first window, where the first window is a time window in which a receiving device processes or receives the signal.

12. The method according to claim 11, wherein: The measurement quantity includes at least one of the first-level measurement quantity, the second-level measurement quantity, the third-level measurement quantity and the fourth-level measurement quantity: The first-level measurement quantity includes at least one of the following items of the received signal or channel: a complex result of a response, an amplitude or a phase, an I path or a Q path, or an operation result of an I path or a Q path; The second-level measurement quantity includes at least one of the following items of the channel: delay, Doppler, angle, and strength; The third-level measurement includes at least one of the following items of the perceived target: distance, speed, direction, spatial position, and acceleration; The fourth level measurement includes at least one of the following items of the sensed target: existence, trajectory, movement, expression, vital sign, quantity, imaging result, weather, air quality, shape, material, and composition.

13. The method according to claim 11, wherein: The reporting configuration includes at least one of the following: Reported time-frequency domain resource configuration; reported time-domain behavior; reported triggering conditions.

14. The method according to any one of claims 1 to 13, wherein: The method further includes: the first device receiving first feedback information from a second device, where the second device is a receiving device of the signal, and the first feedback information includes at least one of the following items related to the signal: Stop sending instructions; Continue to send instructions; A switching indication of the preset rule; Performance indicators; An indication of whether performance indicators are met; Start sending instructions.

15. The method according to claim 1, wherein: The first device is a terminal or a network-side device; the signal receiving device is a terminal or a network-side device.

16. A signal receiving method, comprising: The second device receives a signal based on a preset rule, where the preset rule includes at least one of the following: First rule: the sending resources of the signal gradually increase; Second rule: the sending resources of the signal are gradually reduced; Third rule: the sending resource of the signal remains unchanged.

17. The method according to claim 16, wherein: The signal is a perception signal, and the perception signal is used for perception measurement.

18. The method according to claim 16 or 17, wherein: The method further includes: the second device sends first feedback information to the first device, where the first device is a device that sends the signal, and the first feedback information includes at least one of the following items related to the signal: Stop sending instructions; Continue to send instructions; A switching indication of the preset rule; Performance indicators; An indication of whether performance indicators are met; Start sending instructions.

19. A first device, comprising: The sending module is used to send a signal based on a preset rule, wherein the preset rule includes at least one of the following: First rule: the sending resources of the signal gradually increase; Second rule: the sending resources of the signal are gradually reduced; Third rule: the sending resource of the signal remains unchanged.

20. The apparatus of claim 19, wherein: The first rule includes at least one of the following: The bandwidth of the signal at each sending moment or each time window gradually increases; The frequency domain density of the signal at each sending moment or each time window gradually increases; The length of the time domain resources of each time window gradually increases; The time domain density of the signal at each sending moment or each time window gradually increases; The power of the signal at each sending moment or each time window gradually increases; The number of transmitting antennas corresponding to each port of the signal at each sending moment or each time window gradually increases; The time window is the time window for calculating the measurement result of the signal each time.

21. The apparatus of claim 19, wherein: The second rule includes at least one of the following: The bandwidth of the signal at each transmission moment or each time window gradually decreases; The frequency domain density of the signal at each sending moment or each time window gradually decreases; The length of the time domain resources of each time window gradually decreases; The time domain density of the signal at each sending moment or each time window gradually decreases; The power of the signal at each sending moment or each time window gradually decreases; The number of transmitting antennas corresponding to each port of the signal at each sending moment or each time window gradually decreases; The time window is the time window for calculating the measurement result of the signal each time.

22. Apparatus according to any one of claims 19 to 21, wherein: The signal is a perception signal, and the perception signal is used for perception measurement.

23. The apparatus of claim 22, wherein: The sending resource of the perception signal is not lower than a minimum threshold or higher than a maximum threshold.

24. The apparatus of claim 23, wherein: The sending module is used for at least one of the following: sending the perception signal based on the first rule, and if the sending resource of the perception signal reaches the maximum threshold, sending the perception signal based on the third rule or the second rule; The perception signal is sent based on the second rule, and if the sending resource of the perception signal reaches the minimum threshold, the perception signal is sent based on the third rule or the first rule.

25. Apparatus according to any one of claims 19 to 24, wherein: The sending module is further used to send first indication information to a second device, where the second device is a receiving device of the signal, and the first indication information is used to indicate at least one of the following: A rule identifier, wherein the rule identifier is used to indicate the preset rule; a step size of increasing or decreasing the transmission resource of the signal at each transmission moment or each time window, the time window being the time window for calculating the measurement result of the signal each time; The rate at which the sending resource of the signal changes.

26. Apparatus according to any one of claims 19 to 24, wherein: The sending module is further used to send second indication information to a second device, where the second device is a receiving device of the signal, and the second indication information is used to indicate an initial configuration of the signal, where the initial configuration of the signal includes at least one of the following: Signal resource identification; waveform; subcarrier spacing; guard interval, wherein the guard interval is: the time interval from the moment the signal ends sending to the moment the latest echo signal of the signal is received; frequency domain starting position; frequency domain resource length; frequency domain resource interval; time domain starting position; time domain resource length; time domain resource interval; transmission power; sequence information; signal direction; quasi-co-site QCL relationship; antenna port information.

27. Apparatus according to any one of claims 19 to 24, wherein: The sending module is further used to send third indication information to the second device, where the second device is a receiving device of the signal, and the third indication information is used to indicate measurement configuration information or reporting configuration information of the signal, where the measurement configuration information or reporting configuration information includes at least one of the following: Measurement quantity; A reporting configuration, wherein the reporting configuration is a criterion for reporting the measurement result of the signal and related feedback information; Parameters of a first window, where the first window is a time window in which a receiving device processes or receives the signal.

28. Apparatus according to any one of claims 19 to 27, wherein: The system further includes a receiving module, which is used to receive first feedback information from a second device, where the second device is a receiving device of the signal, and the first feedback information includes at least one of the following items related to the signal: Stop sending instructions; Continue to send instructions; A switching indication of the preset rule; Performance indicators; An indication of whether performance indicators are met; Start sending instructions.

29. A second device, comprising: A receiving module is used to receive a signal based on a preset rule, wherein the preset rule includes at least one of the following: First rule: the sending resources of the signal gradually increase; Second rule: the sending resources of the signal are gradually reduced; Third rule: the sending resource of the signal remains unchanged.

30. The apparatus of claim 29, wherein: The signal is a perception signal, and the perception signal is used for perception measurement.

31. Apparatus according to claim 29 or 30, wherein: The system further includes a sending module, which is used to send first feedback information to a first device, where the first device is a sending device of the signal, and the first feedback information includes at least one of the following items related to the signal: Stop sending instructions; Continue to send instructions; A switching indication of the preset rule; Performance indicators; An indication of whether performance indicators are met; Start sending instructions.

32. A device comprising a processor and a memory, wherein the memory stores a program or instruction executable on the processor, wherein the program or instruction, when executed by the processor, implements the steps of the method according to any one of claims 1 to 18.

33. A readable storage medium storing a program or instruction, wherein the program or instruction, when executed by a processor, implements the steps of the method according to any one of claims 1 to 18.

Images