Information processing method, configuration method, apparatus, and communication device

Abstract

The present application belongs to the technical field of communications. Disclosed are an information processing method, a configuration method, an apparatus, and a communication device. The information processing method in the embodiments of the present application comprises: a first device receiving first information sent by a second device, wherein the first information is used for configuring or indicating a first resource and a first signal parameter of a first signal, and the first signal is a signal used for sensing or positioning; and on the basis of the first signal parameter, sending the first signal to a fourth device on the first resource, wherein a time-domain resource of the first resource includes a plurality of time units, and the plurality of time units meet the following conditions: the fourth device being capable of completing at least one phase measurement on each of at least two time units, and being capable of completing at least one antenna switch between different time units, alternatively, a frequency-domain resource of the first resource meets: the first signal including at least two portions, and the at least two portions being located at unequal central frequency points.

Description

Information processing method, configuration method, device and communication equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese Patent Application No. 202410029718.7 filed in China on January 8, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of communication technology, and specifically relates to an information processing method, configuration method, device and communication equipment. Background Art

[0004] In related technologies, the perception or positioning of backscatter communication (BSC) devices typically uses multiple receiving antennas to simultaneously measure the phase of signals emitted by BSC devices to estimate the angle of arrival, thereby achieving perception or positioning of BSC devices. However, the need for multiple antennas to simultaneously receive signals places high demands on the receiving end, and the inability to compensate for the modulation delay and random initial phase introduced by the BSC device results in inaccurate perception or positioning of BSC devices. Summary of the Invention

[0005] The embodiments of the present application provide an information processing method, a configuration method, an apparatus, and a communication device, which can solve the problem in related technologies of being unable to accurately perceive or locate BSC devices.

[0006] In a first aspect, an information processing method is provided, which is performed by a first device. The method includes:

[0007] A first device receives first information sent by a second device, wherein the first information is used to configure or indicate a first resource and a first signal parameter of a first signal, and the first signal is a signal used for sensing or positioning;

[0008] The first device sends the first signal to the fourth device on the first resource according to the first signal parameter;

[0009] The time domain resource of the first resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement in each of at least two time units, and can complete at least one antenna switching between different time units;

[0010] Alternatively, the frequency domain resources of the first resources satisfy: the first signal includes at least two parts, and the at least two parts are located at unequal central frequency points.

[0011] In a second aspect, an information processing method is provided, which is performed by a third device. The method includes:

[0012] The third device receives second information sent by the second device, wherein the second information is used to configure or indicate second resources and second signal parameters of the second signal;

[0013] The third device sends the second signal to the first device on the second resource according to the second signal parameter, wherein the second signal is used to generate the first signal by backscattering, and the first signal is a signal used for sensing or positioning;

[0014] The time domain resource of the second resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device for receiving the first signal can complete at least one phase measurement in each of at least two time units, and can complete at least one antenna switching between different time units;

[0015] Alternatively, the frequency domain resources of the second resource satisfy: the center frequency of the second signal is related to the center frequency of the first signal, the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

[0016] According to a third aspect, an information processing method is provided, which is performed by a fourth device. The method includes:

[0017] The fourth device receives third information sent by the second device; wherein the third information is used to configure or indicate the first resource and the first signal parameter of the first signal;

[0018] receiving, by the fourth device, the first signal sent by the first device on the first resource according to the first signal parameter;

[0019] The fourth device performs sensing or positioning according to the first signal.

[0020] In a fourth aspect, an information configuration method is provided, which is performed by a second device, and the method includes:

[0021] The second device performs the first operation;

[0022] The first operation includes at least one of the following: sending first information to the first device, sending second information to the third device, and sending third information to the fourth device;

[0023] The first information or the third information is used to configure or indicate the first resources and first signal parameters of the first signal, and the second information is used to configure or indicate the second resources and second signal parameters of the second signal; the second signal is the radio frequency carrier signal of the first signal, and the first signal is a signal used for perception or positioning.

[0024] In a fifth aspect, an information processing device is provided, comprising:

[0025] A first receiving module, configured to receive first information sent by a second device; wherein the first information is used to configure or indicate a first resource and a first signal parameter of a first signal, where the first signal is a signal used for sensing or positioning;

[0026] A first sending module, configured to send the first signal to a fourth device on the first resource according to the first signal parameter;

[0027] The time domain resource of the first resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement in each of at least two time units, and can complete at least one antenna switching between different time units;

[0028] Alternatively, the frequency domain resources of the first resources satisfy: the first signal includes at least two parts, and the at least two parts are located at unequal central frequency points.

[0029] In a sixth aspect, an information processing device is provided, comprising:

[0030] A second receiving module, configured to receive second information sent by a second device; wherein the second information is used to configure or indicate second resources and second signal parameters of the second signal;

[0031] A second sending module, configured to send the second signal to the first device on the second resource according to the second signal parameter, wherein the second signal is used to generate the first signal by backscattering, and the first signal is a signal used for sensing or positioning;

[0032] The time domain resource of the second resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device for receiving the first signal can complete at least one phase measurement in each of at least two time units, and can complete at least one antenna switching between different time units;

[0033] Alternatively, the frequency domain resources of the second resource satisfy: the center frequency of the second signal is related to the center frequency of the first signal, the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

[0034] In a seventh aspect, an information processing device is provided, comprising:

[0035] A third receiving module is configured to receive third information sent by the second device; wherein the third information is used to configure or indicate the first resource and the first signal parameter of the first signal;

[0036] a fourth receiving module, configured to receive, on the first resource, a first signal sent by the first device according to the first signal parameter;

[0037] An execution module is used to perform perception or positioning according to the first signal.

[0038] In an eighth aspect, an information configuration device is provided, comprising:

[0039] a third sending module, configured to perform a first operation, where the first operation includes at least one of the following: sending first information to the first device, sending second information to the third device, and sending third information to the fourth device;

[0040] The first information or the third information is used to configure or indicate the first resources and first signal parameters of the first signal, and the second information is used to configure or indicate the second resources and second signal parameters of the second signal; the second signal is the radio frequency carrier signal of the first signal, and the first signal is a signal used for perception or positioning.

[0041] In the ninth aspect, a communication device is provided, which includes a processor and a memory, wherein the memory stores a program or instruction that can be run on the processor, and when the program or instruction is executed by the processor, it implements the steps of the method described in the first aspect, or implements the steps of the method described in the second aspect, or implements the steps of the method described in the third aspect, or implements the steps of the method described in the fourth aspect.

[0042] In a tenth aspect, a communication device is provided, comprising a processor and a communication interface. When the communication device is a first device, the communication interface is configured to receive first information sent by a second device, the first information being used to configure or indicate a first resource and a first signal parameter of a first signal, the first signal being a signal used for sensing or positioning, and the first signal being sent to a fourth device on the first resource based on the first signal parameter. Alternatively, when the communication device is a third device, the communication interface is configured to receive second information sent by the second device, the second information being used to configure or indicate a second resource and a second signal parameter of the second signal, and the second signal being sent to the first device on the second resource based on the second signal parameter, the second signal being used to generate the first signal through backscattering. Alternatively, when the communication device is a fourth device, the communication interface is configured to receive third information sent by the second device, the third information being used to configure or indicate a first resource and a first signal parameter of the first signal, and the first signal sent by the first device being received on the first resource based on the first signal parameter; the processor is configured to perform sensing or positioning based on the first signal. Alternatively, when the communication device is a second device, the communication interface is used to perform a first operation, and the first operation includes at least one of the following: sending first information to the first device, sending second information to the third device, and sending third information to the fourth device. The time domain resources of the first resource or the second resource include multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement in at least two time units and can complete at least one antenna switching between different time units; or the frequency domain resources of the first resource meet the following conditions: the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

[0043] In the eleventh 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, or the steps of the method described in the third aspect are implemented, or the steps of the method described in the fourth aspect are implemented.

[0044] In the twelfth aspect, a wireless communication system is provided, comprising: at least two of a first device, a second device, a third device and a fourth device, wherein the first device can be used to perform the steps of the method described in the first aspect, the third device can be used to perform the steps of the method described in the second aspect, the fourth device can be used to perform the steps of the method described in the third aspect, and the second device can be used to perform the steps of the method described in the fourth aspect.

[0045] In the thirteenth 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 the steps of the method described in the second aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fourth aspect.

[0046] In the fourteenth aspect, a computer program / program product is provided, which is stored in a storage medium, and the program / program product is executed by at least one processor to implement the steps of the method described in the first aspect, or the steps of the method described in the second aspect, or the steps of the method described in the third aspect, or the steps of the method described in the fourth aspect.

[0047] Through the solution of the embodiment of the present application, multiple antennas can be used to perform time-division phase measurement to estimate the angle of the BSC device, or to achieve ranging based on absolute phase or carrier phase difference, thereby accurately realizing perception or positioning of the BSC device. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] FIG1 is a block diagram of a wireless communication system applicable to embodiments of the present application;

[0049] FIG2A is a schematic diagram of a monostatic backscatter communication system according to an embodiment of the present application;

[0050] FIG2B is a schematic diagram of a bistatic backscatter communication system according to an embodiment of the present application;

[0051] 3A, 3B, 3C, 3D, 3E, 3F, 3G, and 3H are schematic diagrams of the architecture of a backscatter communication system according to an embodiment of the present application;

[0052] FIG4 is a flow chart of an information processing method provided by an embodiment of the present application;

[0053] FIG5 is a flowchart of another information processing method provided in an embodiment of the present application;

[0054] FIG6 is a flowchart of another information processing method provided in an embodiment of the present application;

[0055] FIG7 is a flowchart of an information configuration method provided in an embodiment of the present application;

[0056] FIG8A, FIG8B and FIG8C are schematic diagrams of a specific embodiment of the present application;

[0057] FIG9 is a schematic structural diagram of an information processing device provided in an embodiment of the present application;

[0058] FIG10 is a schematic structural diagram of another information processing device provided in an embodiment of the present application;

[0059] FIG11 is a schematic structural diagram of another information processing device provided in an embodiment of the present application;

[0060] FIG12 is a schematic structural diagram of an information configuration device provided in an embodiment of the present application;

[0061] FIG13 is a schematic structural diagram of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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 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 6th generation (6G) systems. th Generation, 6G) communication system.

[0066] 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 (AP) 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 relevant 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.

[0067] In order to facilitate understanding of the embodiments of the present application, the following contents are first described.

[0068] Backscatter Communication (BSC) refers to the use of radio frequency signals from other devices or the environment to modulate the signal and transmit its own information. Backscatter communication equipment (also known as BSC equipment) can be, but is not limited to:

[0069] - The BSC device in traditional Radio Frequency Identification (RFID) is generally a tag and belongs to the passive Internet of Things (IoT) device, namely Passive-IoT;

[0070] - Semi-passive tags (Tags) have a certain amplification capability for downlink reception or uplink reflection;

[0071] - Active tags are tags that can send information to a reader without relying on reflection of the incident signal.

[0072] For backscatter communication, a simple implementation method is: when the tag needs to send a '1', the tag reflects the incident carrier signal; when the tag needs to send a '0', it does not reflect.

[0073] Optionally, the backscatter communication device can control the circuit's reflection coefficient by adjusting its internal impedance, thereby changing the amplitude, frequency, phase, etc. of the incident signal to achieve signal modulation. By properly controlling the reflection coefficient, corresponding amplitude modulation, frequency modulation, and / or phase modulation can be achieved.

[0074] As shown in Figure 2A, a single-base backscatter communication system, typically a traditional RFID system, includes a base station control (BSC) device (e.g., a tag) and a reader / writer. The reader / writer includes an RF source and a base station control (BSC) receiver. The RF source generates an RF signal (typically a continuous wave (CW), or excitation signal) to power and provide a carrier wave for the BSC device. The BSC device modulates and backscatters the CW signal, and the BSC receiver in the reader / writer receives and demodulates the backscattered signal. Because the RF source and BSC receiver are located in the same device, such as the reader / writer, it is called a single-base backscatter communication system. In this system, the RF signal transmitted from the BSC device experiences a double near-far effect due to the round-trip signal attenuation, resulting in significant signal energy attenuation. Therefore, single-base systems are generally used for short-range backscatter communication, such as traditional RFID applications.

[0075] Unlike monostatic backscatter systems, bistatic backscatter systems use separate RF sources and BSC receivers, as shown in Figure 2B. Consequently, bistatic backscatter systems can avoid significant round-trip signal attenuation. Furthermore, proper placement of the RF source can further enhance backscatter system performance.

[0076] In a cellular network, the backscatter communication system can be specifically divided into eight architectures as shown in Table 1 below and Figures 3A to 3H based on the differences in RF radio frequency source, uplink, and downlink.

[0077] Table 1

[0078] In Architecture 1, as shown in Figure 3A, the base station (e.g., gNB) serves as the RF source, the downlink transmitter (i.e., control command transmitter) for the BSC, and the uplink receiver (i.e., BSC receiver) for the BSC. In this case, the base station communicates directly with the BSC. This deployment architecture places high demands on the receiver sensitivity of the base station and BSC, but is simple to deploy.

[0079] In Architecture 2, as shown in Figure 3B, the base station (e.g., gNB) is the RF source, but a helper / relay relay is present to relay the uplink from the BSC to the base station. Furthermore, the relay relay can also relay the downlink from the base station to the BSC.

[0080] In Architecture 3, the UE can be used as the RF source and forward the downlink and uplink of the BSC equipment to the base station. Architecture 3 can be divided into the following architectures:

[0081] In architecture 3-1a, as shown in Figure 3C, the base station (e.g., gNB) is the RF source. In the downlink, the base station directly transmits downlink data to the basestation control (BSC). In the uplink, the BSC first sends a backscattered signal to the user equipment (UE), which then forwards it to the base station.

[0082] In architecture 3-1b, as shown in Figure 3D, the UE is the RF source. In the downlink, the base station (e.g., gNB) directly transmits downlink data to the basestation control (BSC). In the uplink, the BSC first sends a backscattered signal to the UE, which then forwards it to the base station.

[0083] In architecture 3-2a, as shown in Figure 3E, the base station (e.g., gNB) is the RF source. In the downlink, the base station first sends downlink data to the UE, which then forwards it to the basestation control center (BSC). In the uplink, the BSC directly sends backscattered signals to the base station.

[0084] In architecture 3-2b, as shown in Figure 3F, the UE is the RF source. In the downlink, the base station (e.g., gNB) first sends downlink data to the UE, which then forwards it to the BSC. In the uplink, the BSC directly sends backscattered signals to the base station.

[0085] In architecture 3-3a, as shown in Figure 3G, the base station (e.g., gNB) is the RF source. In the downlink, the base station first sends downlink data to the UE, which then forwards it to the basestation control center (BSC). In the uplink, the BSC first sends a backscattered signal to the UE, which then forwards it to the base station.

[0086] In architecture 3-3b, as shown in Figure 3H, the UE is the RF source. In the downlink, the base station (e.g., gNB) first sends downlink data to the UE, which is then forwarded to the BSC. In the uplink, the BSC first sends a backscattered signal to the UE, which is then forwarded to the base station.

[0087] It should be noted that in Figures 3A to 3H, thick arrows represent downlinks, thin arrows represent uplinks, and lightning bolts represent RF radios. The solution in this embodiment decouples the control command sender, RF radio source, backscatter signal receiver, and BSC equipment, and can be used in all architectures of the aforementioned monostatic and bistatic backscatter communication systems and cellular networks.

[0088] Optionally, the solution in the present application can be applied to backscatter communication systems, including but not limited to RFID, LTE, NB-IoT, NR, IEEE 802.11 evolution systems, etc.

[0089] The solution in this application involves four devices with different functions (based on the functional division only, the same device entity can undertake more than one function), namely:

[0090] First device: low-power communication equipment such as BSC equipment, which can be a passive device without energy storage capability, cannot generate radio frequency signals by itself and communicate based on backscattering technology; or a semi-passive device with a certain energy storage capability, cannot generate radio frequency signals by itself and communicate based on backscattering technology.

[0091] Second device: a low-power communication control device, which can be a UE, a reader / writer, a repeater, a relay, a base station or other network element, such as a function specifically responsible for low-power communication (Low Power Communication / LPC Function), or a network node that runs this function; there is no limitation on this.

[0092] Third device: a communication device that sends control signaling, radio frequency signals or data, which can be a UE, Reader, Repeater, Relay or base station, etc. If the third device is not a base station, the signaling interaction between the second device and the third device may need to be completed through the associated base station of the third device, and the signaling interaction between the third device and the fourth device needs to be completed through the associated base station of the third device or through a side link. If the third device is a base station and the fourth device is also a base station, the signaling interaction between the third device and the fourth device can be completed through the communication interface between base stations (such as X2 / Xn interface, etc.). For the sake of brevity in the description of this application, the above process will not be repeated in the following description.

[0093] Fourth device: A communication device that receives signals sent by a low-power communication device (i.e., the first device), which may be a UE, a Reader, a Repeater, a Relay, or a base station, etc. If the fourth device is not a base station, the signaling interaction between the second device and the fourth device may need to be completed through the associated base station of the fourth device, and the signaling interaction between the third device and the fourth device must be completed through the associated base station of the fourth device or through a side link. If the third device is a base station, and the fourth device is also a base station, the signaling interaction between the third device and the fourth device can be completed through the communication interface between base stations (such as the X2 / Xn interface, etc.). For the sake of brevity in the description of this application, the above process will not be repeated in the following description.

[0094] It should be noted that if, during deployment, one physical device is responsible for more than one of the above functions, the corresponding signaling interaction can be omitted. Without loss of generality, the following description is based on the case where the four devices are different physical devices, and no further details are given below.

[0095] The information processing method, configuration method, apparatus, and communication device provided in the embodiments of the present application are described in detail below with reference to some embodiments and their application scenarios in conjunction with the accompanying drawings.

[0096] Please refer to FIG4 , which is a flowchart of an information processing method provided in an embodiment of the present application. The method is executed by a first device. As shown in FIG4 , the method includes the following steps:

[0097] Step 41: The first device receives first information sent by the second device, where the first information is used to configure or indicate a first resource and a first signal parameter of a first signal, where the first signal is a signal used for sensing or positioning.

[0098] Step 42: The first device sends the first signal to the fourth device on the first resource according to the first signal parameter.

[0099] In this embodiment of the present application, the first device is a low-power communication device such as a BSC. The second device is a controller of the first device and may be a UE, reader, repeater, relay, or base station, and may be the same or a different device as the fourth device. The fourth device is a communication device that receives signals sent by the first device and may be a UE, reader, repeater, relay, or base station.

[0100] Optionally, the time domain resource of the first resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement in at least two time units, and can complete at least one antenna switching between different time units. Thus, the simultaneous phase measurement of multiple antennas can be extended to time-division phase measurement, such as performing time-division phase measurement when multiple antennas share one RF chain, so that the fourth device uses multiple antennas to measure the phases of multiple first signals in multiple time units respectively, and then compensates the measured phases according to the time intervals of the multiple first signals, so that the compensated phase is consistent with the phase when multiple antennas are used to measure simultaneously, thereby accurately realizing the perception or positioning of the first device (such as a BSC device).

[0101] Optionally, the frequency domain resources of the first resource satisfy: the first signal includes at least two parts, and the at least two parts are located at unequal central frequency points. Each part refers to: decomposing the first signal into multiple sub-signals that do not overlap with each other in the frequency domain and have no non-zero support (that is, the power spectrum density is zero) in the range of [-infinity, left frequency domain range boundary] and [right frequency domain range boundary, positive infinity], and each sub-signal is each part. In this way, ranging can be achieved based on the carrier phase difference, thereby accurately realizing the perception or positioning of the first device (such as a BSC device).

[0102] Through the solution of the embodiment of the present application, multiple antennas can be used to perform time-division phase measurement to estimate the angle of the first device (such as a BSC device), or to achieve ranging based on absolute phase or carrier phase difference, thereby accurately realizing perception or positioning of the BSC device.

[0103] Optionally, when the first signal is obtained by backscattering the second signal, e.g., when the second signal is the RF carrier signal of the first signal and the first signal is a backscattered signal, the frequency domain resources of the first resource may further satisfy the following requirement: the average of the sum of the frequencies of all center frequencies of the first signal is equal to the frequency of the center frequency of the second signal. For example, a third device may transmit the second signal to the first device, so that the first device obtains and transmits the first signal through backscattering.

[0104] For example, if the first signal contains two parts located at unequal center frequencies, such as unequal center frequencies f1 and f2, then the center frequency of the second signal is half the sum of f1 and f2. At this time, the first device can use double-sideband modulation (such as amplitude-shift keying ASK, double-sideband amplitude-shift keying DSB-ASK, etc.) to realize signal transmission.

[0105] Optionally, the first resource may include at least one of the following:

[0106] Time domain resources, such as whether the first signal is transmitted periodically, semi-periodically, or aperiodically, and the signal length of the second signal;

[0107] Frequency domain resources, such as bandwidth, center frequency, frequency point, frequency band, frequency hopping sequence, comb size, frequency domain resource pattern, etc.

[0108] Code domain resources, such as the type, length, index, generation method, etc. of orthogonal cover code (OCC), PN code (Pseudo-Noise Code), or other code sequences.

[0109] Optionally, the first signal parameter is a sending parameter configured to the first device, and may include but is not limited to at least one of the following:

[0110] the transmission power or reflection coefficient of the first signal;

[0111] Sequence information of the first signal, such as sequence type, sequence generation method, sequence index, etc.;

[0112] A coding method of the first signal, such as line coding, channel coding, etc.;

[0113] the encoding rate or encoding rate index of the first signal;

[0114] A modulation mode of the first signal, such as double-sideband modulation, single-sideband modulation, amplitude shift keying (ASK) modulation, phase shift keying (PSK) modulation, frequency shift keying (FSK) modulation, quadrature amplitude modulation (QAM), etc.

[0115] a modulation order (or level) or a modulation order index of the first signal;

[0116] Coding and modulation index of the first signal;

[0117] a demodulation reference signal or a time-frequency reference signal of the first signal;

[0118] a preamble of the first signal, the preamble being associated with a device identifier of the first device or a device identifier of the second device, so that the first device generates a corresponding first signal;

[0119] a synchronization sequence of the first signal, the synchronization sequence being associated with a device identifier of the first device or a device identifier of the second device, so that the first device generates a corresponding first signal;

[0120] The device identification information carried by the first signal, such as the device identification information of the first device or the device identification information of the second device;

[0121] The scrambling method of the first signal is, for example, a method for generating a scrambling sequence.

[0122] Optionally, to facilitate subsequent perception or positioning, the information processing method in the embodiment of the present application may further include:

[0123] The first device reports at least one of the following to the second device or the fourth device: the modulation delay of the first signal, the phase of the second signal when it reaches the first device; the second signal is the radio frequency carrier signal of the first signal.

[0124] Please refer to FIG5 , which is a flowchart of an information processing method provided in an embodiment of the present application. The method is performed by a third device. As shown in FIG5 , the method includes the following steps:

[0125] Step 51: The third device receives second information sent by the second device, where the second information is used to configure or indicate a second resource and a second signal parameter of a second signal;

[0126] Step 52: The third device sends the second signal to the first device on the second resource according to the second signal parameter; the second signal is used to generate a first signal through backscattering, and the first signal is a signal used for perception or positioning.

[0127] In this embodiment of the present application, the third device is a communication device that sends control signaling, radio frequency signals, or data, and may be a UE, reader, repeater, relay, or base station. The first device is a low-power communication device such as a base station control (BSC). The second device is a control device for the first device, and may be a UE, reader, repeater, relay, or base station, and may be the same or different from the fourth device. The fourth device is a communication device that receives signals sent by the first device, and may be a UE, reader, repeater, relay, or base station.

[0128] Optionally, the time domain resource of the second resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device for receiving the first signal can complete at least one phase measurement in at least two time units, and can complete at least one antenna switching between different time units. Thus, the simultaneous phase measurement of multiple antennas can be extended to time-division phase measurement, such as performing time-division phase measurement when multiple antennas share one RF chain, so that after the fourth device measures the phase of multiple first signals, it compensates the measured phase according to the time interval of the multiple first signals, so that the compensated phase is consistent with the phase when multiple antennas are measured simultaneously, thereby accurately realizing the perception or positioning of the first device (such as a BSC device).

[0129] Optionally, the frequency domain resources of the second resource satisfy the following conditions: a center frequency of the second signal is related to a center frequency of the first signal, and the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies. Thus, ranging can be achieved based on the carrier phase difference, thereby accurately sensing or locating the first device (e.g., a BSC device).

[0130] Through the solution of the embodiment of the present application, multiple antennas can be used to perform time-division phase measurement to estimate the angle of the first device (such as a BSC device), or to achieve ranging based on absolute phase or carrier phase difference, thereby accurately realizing perception or positioning of the BSC device.

[0131] Optionally, the average of the sum of frequencies of all center frequency points of the first signal is equal to the frequency of the center frequency point of the second signal.

[0132] Optionally, the second resource may include at least one of the following:

[0133] Time domain resources, such as whether the first signal is transmitted periodically, semi-periodically, or aperiodically, and the signal length of the second signal;

[0134] Frequency domain resources, such as bandwidth, center frequency, frequency point, frequency band, frequency hopping sequence, comb size, frequency domain resource pattern, etc.

[0135] Code domain resources, such as the type, length, index, generation method, etc. of OCC, PN code or other code sequences.

[0136] Optionally, the sending parameters configured by the second signal parameter to the third device may include at least one of the following:

[0137] the transmit power of the second signal;

[0138] Sequence information of the second signal; for example, if the second signal is a non-single-frequency signal, it can be sent in the form of a sequence. In this case, the signal parameters include sequence information, such as sequence type, generation method, sequence index, etc.

[0139] Please refer to FIG6 , which is a flowchart of an information processing method provided in an embodiment of the present application. The method is performed by a fourth device. As shown in FIG6 , the method includes the following steps:

[0140] Step 61: The fourth device receives third information sent by the second device, where the third information is used to configure or indicate a first resource and a first signal parameter of the first signal;

[0141] Step 62: The fourth device receives the first signal sent by the first device on the first resource according to the first signal parameter;

[0142] Step 63: The fourth device performs sensing or positioning according to the first signal.

[0143] In this embodiment of the present application, the first device is a low-power communication device such as a BSC. The second device is a controller of the first device and may be a UE, reader, repeater, relay, or base station, and may be the same or a different device as the fourth device. The fourth device is a communication device that receives signals sent by the first device and may be a UE, reader, repeater, relay, or base station.

[0144] Optionally, the time domain resource of the first resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement in at least two time units, and can complete at least one antenna switching between different time units. Thus, the simultaneous phase measurement of multiple antennas can be extended to time-division phase measurement, such as performing time-division phase measurement when multiple antennas share one RF chain, so that after the fourth device measures the phase of multiple first signals, it compensates the measured phase according to the time interval of the multiple first signals, so that the compensated phase is consistent with the phase when multiple antennas are measured simultaneously, thereby accurately realizing the perception or positioning of the first device (such as a BSC device).

[0145] Optionally, the frequency domain resources of the first resource satisfy: the first signal includes at least two parts, and the at least two parts are located at unequal center frequency points. Each part refers to: decomposing the first signal into multiple sub-signals that do not overlap with each other in the frequency domain and have no non-zero support in the range of [-infinity, left frequency domain range boundary] and [right frequency domain range boundary, positive infinity], and each sub-signal is each part. Thus, ranging can be achieved based on carrier phase difference, thereby accurately realizing perception or positioning of the first device (such as BSC device).

[0146] Through the solution of the embodiment of the present application, multiple antennas can be used to perform time-division phase measurement to estimate the angle of the first device (such as a BSC device), or to achieve ranging based on absolute phase or carrier phase difference, thereby accurately realizing perception or positioning of the BSC device.

[0147] Optionally, when the first signal is obtained by backscattering the second signal, such as when the second signal is a radio frequency carrier signal of the first signal, the frequency domain resources of the first resource may further satisfy the following requirement: the average of the sum of all center frequency points of the first signal is equal to the center frequency point of the second signal. For example, a third device may transmit the second signal to the first device, causing the first device to obtain and transmit the first signal through backscattering.

[0148] Optionally, the first resource may include at least one of the following:

[0149] Time domain resources, such as whether the first signal is transmitted periodically, semi-periodically, or aperiodically, and the signal length of the second signal;

[0150] Frequency domain resources, such as bandwidth, center frequency, frequency point, frequency band, frequency hopping sequence, comb size, frequency domain resource pattern, etc.

[0151] Code domain resources, such as the type, length, index, generation method, etc. of OCC, PN code or other code sequences.

[0152] Optionally, the first signal parameter is a receiving parameter configured for the fourth device, and may include but is not limited to at least one of the following:

[0153] the transmission power or reflection coefficient of the first signal;

[0154] Sequence information of the first signal, such as sequence type, sequence generation method, sequence index, etc.;

[0155] A coding method of the first signal, such as line coding, channel coding, etc.;

[0156] the encoding rate or encoding rate index of the first signal;

[0157] The modulation mode of the first signal includes, for example, double-sideband modulation, single-sideband modulation, ASK modulation, PSK modulation, FSK modulation, QAM modulation, etc.;

[0158] a modulation order (or level) or a modulation order index of the first signal;

[0159] Coding and modulation index of the first signal;

[0160] a demodulation reference signal or a time-frequency reference signal of the first signal;

[0161] a preamble of the first signal, the preamble being associated with a device identifier of the first device or a device identifier of the second device, so that the first device generates a corresponding first signal;

[0162] a synchronization sequence of the first signal, the synchronization sequence being associated with a device identifier of the first device or a device identifier of the second device, so that the first device generates a corresponding first signal;

[0163] The device identification information carried by the first signal, such as the device identification information of the first device or the device identification information of the second device;

[0164] The scrambling method of the first signal is, for example, a method for generating a scrambling sequence.

[0165] Optionally, if the time domain resource of the first resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement in each of at least two time units, and can complete at least one antenna switching between different time units, the above step 62 may include:

[0166] The fourth device receives the first signal sent by the first device over at least two time units using at least two receiving antennas based on the first signal parameters. That is, the fourth device receives the first signal sent by the first device using different receiving antennas over different time units, and the fourth device switches antennas within the time interval between the first device sending multiple first signals.

[0167] Step 63 may include: first, the fourth device measures the phase of the first signal received by each of the at least two receiving antennas, where the phase is measured at the same frequency; then, the fourth device determines the angle of arrival of the signal of the first device based on the measured phase of the first signal and the time interval between the first signals received by the at least two receiving antennas. In this way, the angle of arrival of the signal of the first device can be determined based on time-division phase measurement, eliminating the need for multiple antennas to receive signals simultaneously, thereby reducing the requirements for the receiving end (i.e., the fourth device).

[0168] Preferably, the number of receiving antennas is the same as the number of time units for sending the first signal / measuring the phase, so as to improve the accuracy of the angle measurement. For example, two receiving antennas correspond to two time units for measuring the phase.

[0169] For example, if the phase of the first signal measured by the i-th antenna at the i-th time unit is The phase of the first signal measured by the j-th antenna at the j-th time unit is And the absolute time difference between the i-th time unit and the j-th time unit is Δt ij , the interval between the i-th antenna and the j-th antenna is a ij , f is the center frequency of the first signal, then the calculated signal arrival angle q ij It can be as follows:

[0170] In some embodiments, the phases of multiple groups of first signals measured using at least two receiving antennas can be taken, and then the signal arrival angles of the multiple groups of first devices can be calculated, and combined (for example, taking the average) to obtain the final signal arrival angle of the first device to improve the reliability of the angle measurement.

[0171] Optionally, the fourth device can calculate the signal arrival angle by itself, or send the received first signal to the second device to complete the calculation; for the latter, the fourth device needs to report the original received signal or the measured phase, as well as other calculation parameters, such as antenna spacing.

[0172] Alternatively, ranging can be achieved based on absolute phase, that is, the absolute phase measured by at least one antenna is used to obtain the signal flight time (Time of Flight, ToF), and then the distance is obtained. The above step 62 may include:

[0173] The fourth device receives the first signal sent by the first device on the first resource using at least one receiving antenna according to the first signal parameter.

[0174] Optionally, the above-mentioned step 63 may include: first, the fourth device measures the phase of the first signal received by the receiving antenna, that is, the absolute phase; then, the fourth device determines the phase difference of the first signal from the first device to the fourth device based on the measured phase of the first signal, the modulation delay of the first signal, and the phase of the second signal when it arrives at the first device, where the second signal is the radio frequency carrier signal of the first signal; finally, the fourth device determines the distance from the first device to the fourth device based on the phase difference.

[0175] For example, if the phase of the first signal is The modulation delay of the first signal is t Mod , the phase of the second signal when it reaches the first device is Then the phase difference of the first signal from the first device to the fourth device is: Then the distance from the first device to the fourth device is: Wherein f is the center frequency of the first signal.

[0176] Optionally, if the fourth device and the third device that sends the second signal are the same device, the above step 63 may include: first, the fourth device measures the first phase of the first signal when it arrives at the receiving antenna, and measures the second phase of the second signal when it is emitted from the transmitting antenna, where the second signal is the radio frequency carrier signal of the first signal; then, the fourth device determines the difference between the arrival phase of the first signal and the sending phase of the second signal based on the first phase and the second phase, and the phase of the second signal arriving at the first device; finally, the fourth device determines the distance from the first device to the fourth device based on the difference between the arrival phase of the first signal and the sending phase of the second signal, and the frequencies of the first signal and the second signal.

[0177] For example, if the difference between the arrival phase of the first signal and the transmission phase of the second signal is The center frequencies of the first signal and the second signal are f1 and f2 respectively, and the distance from the first device to the fourth device is:

[0178] Optionally, the modulation delay of the first signal may be reported by the first device to the fourth device.

[0179] Optionally, the phase of the second signal when it reaches the first device may be reported by the first device to the fourth device, or estimated by the fourth device (this is applicable when the fourth device and the third device that sends the second signal are the same device).

[0180] In the scheme of achieving ranging based on absolute phase, since the first device may introduce additional time delay (and thus additional phase) due to modulation, and the phase of the radio frequency signal when it reaches the first device is unknown, it is necessary to compensate for this part of the additional phase or random phase. Therefore, ranging can be achieved based on carrier phase difference. For example, if the first device performs double-sideband modulation, such as DSB-ASK modulation, then the first signal sent by the first device has two center frequencies. Then the distance can be estimated by measuring the phase difference between the two center frequencies, or it is called a ranging method based on carrier phase difference. Thanks to the difference in phase, the additional phase introduced by the modulation of the first device and the random initial phase of the radio frequency carrier are eliminated.

[0181] Optionally, if the frequency domain resource of the first resource satisfies: the first signal includes at least two parts, and the at least two parts are located at unequal central frequencies, step 62 may include:

[0182] The fourth device uses at least one receiving antenna to respectively receive at least two parts of the first signal located at unequal central frequency points according to the first signal parameters, so as to achieve ranging based on the phase difference at the unequal central frequency points.

[0183] The above step 64 may include:

[0184] First, the fourth device measures the first signal at the at least two unequal center frequency points respectively to obtain a phase difference of the first signal at the unequal center frequency points;

[0185] The fourth device then performs any of the following:

[0186] (1) determining the distance from the first device to the fourth device based on the phase difference and the difference between the designated frequencies of different parts of the first signal; the designated frequency may be the center frequency of the corresponding part of the first signal (i.e., the frequency of the center frequency point) or other frequencies other than the center frequency (i.e., other frequencies other than the center frequency in the frequency range of the corresponding part); for example, if the phase difference is The frequency difference between the unequal center frequency points of the first signal is f a -f b , the calculated distance is

[0187] (2) determining the distance from the first device to the fourth device based on the phase difference, the phase difference of the first signal reaching the receiving antenna, and the difference between the designated frequencies of different parts of the first signal; the designated frequency may be the center frequency of the corresponding part of the first signal (i.e., the frequency of the center frequency point) or other frequencies other than the center frequency (i.e., other frequencies other than the center frequency in the frequency range of the corresponding part); in this case, it is applicable to consider the phase difference of the first signal reaching the receiving antenna and compensate for the phase difference when calculating the distance;

[0188] (3) Determine the distance from the first device to the fourth device based on the phase difference, the interval between different receiving antennas, and the difference between the designated frequencies of different parts of the first signal; the designated frequency may be the center frequency of the corresponding part in the first signal (i.e., the frequency of the center frequency point) or other frequencies other than the center frequency (i.e., other frequencies other than the center frequency in the frequency range of the corresponding part); this is applicable to the case where multiple receiving antennas are used to receive / measure signals, and additional compensation is made for the phase difference caused by different antennas when calculating the distance.

[0189] In some embodiments, multiple receiving antennas can be used to measure the first signal, and then multiple groups of distances from the first device to the fourth device are calculated and merged (for example, taking the average) to obtain the final distance from the first device to the fourth device to improve the reliability of the distance measurement.

[0190] Optionally, the fourth device may calculate the distance from the first device to the fourth device by itself, or send the received first signal to the second device to complete the calculation; for the latter, the fourth device needs to report the original received signal or the measured phase, etc.

[0191] Please refer to FIG. 7 , which is a flowchart of an information configuration method provided in an embodiment of the present application. The method is performed by the second device. As shown in FIG. 7 , the method includes the following steps:

[0192] Step 71: The second device performs a first operation; the first operation includes at least one of the following: sending first information to the first device, sending second information to the third device, and sending third information to the fourth device.

[0193] In an embodiment of the present application, the first information or the third information is used to configure or indicate the first resources and first signal parameters of the first signal, and the second information is used to configure or indicate the second resources and second signal parameters of the second signal; the second signal is the radio frequency carrier signal of the first signal, and the first signal is a signal used for perception or positioning.

[0194] The first device is a low-power communication device such as a BSC. The second device is a controller for the first device and may be a UE, reader, repeater, relay, or base station, and may be the same or different from the fourth device. The third device is a communication device that sends control signaling, radio frequency signals, or data and may be a UE, reader, repeater, relay, or base station. The fourth device is a communication device that receives signals sent by the first device and may be a UE, reader, repeater, relay, or base station.

[0195] Optionally, the time domain resource of the first resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement in at least two time units, and can complete at least one antenna switching between different time units. Thus, the simultaneous phase measurement of multiple antennas can be extended to time-division phase measurement, such as performing time-division phase measurement when multiple antennas share one RF chain, so that the fourth device uses multiple antennas to measure the phases of multiple first signals in multiple time units respectively, and then compensates the measured phases according to the time intervals of the multiple first signals, so that the compensated phase is consistent with the phase when multiple antennas are used to measure simultaneously, thereby accurately realizing the perception or positioning of the first device (such as a BSC device).

[0196] Optionally, the frequency domain resources of the first resource satisfy: the first signal includes at least two parts, and the at least two parts are located at unequal center frequency points. Each part refers to: decomposing the first signal into multiple sub-signals that do not overlap with each other in the frequency domain and have no non-zero support in the range of [-infinity, left frequency domain range boundary] and [right frequency domain range boundary, positive infinity], and each sub-signal is each part. Thus, ranging can be achieved based on carrier phase difference, thereby accurately realizing perception or positioning of the first device (such as BSC device).

[0197] Optionally, the time domain resources of the second resource include multiple time units, and the multiple time units meet the following conditions: the fourth device used to receive the first signal can complete at least one phase measurement on each of at least two time units, and can complete at least one antenna switching between different time units.

[0198] Optionally, the frequency domain resources of the second resource satisfy: the center frequency of the second signal is related to the center frequency of the first signal, the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

[0199] Optionally, specific contents of the first signal parameter and the second signal parameter may refer to the above embodiment, and will not be described again here to avoid repetition.

[0200] The present application is described below with reference to specific embodiments.

[0201] Example 1

[0202] In the first embodiment, angle measurement is achieved based on time-division phase measurement. The specific process includes:

[0203] Step 1: The second device configures / indicates resources related to the first signal (including resources for the third device to transmit a radio frequency carrier signal (hereinafter referred to as the second signal) and resources for the first device to transmit a first signal (i.e., a backscattered signal)) and signal parameters, and configures or indicates first resources and first signal parameters for the first signal to the first device / fourth device, and configures or indicates second resources and second signal parameters for the second signal to the third device. For details of the first resources, first signal parameters, second resources, and second signal parameters, refer to the above embodiments.

[0204] In this step 1, the time domain resources in the first resource and the second resource must meet the first condition, which is: the time domain resources include multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement on each of at least two time units, and can complete at least one antenna switching between different time units.

[0205] Preferably, the number of receiving antennas is equal to the number of time units, for example, two receiving antennas correspond to two time units for measuring phase. For example, the two configured time units may be time units "2" and "5" in FIG8A.

[0206] Step 2: With the configured signal parameters, on the specified resources, the third device sends a radio frequency carrier signal (i.e., the second signal) to the first device, the first device generates and sends the first signal through backscattering, and the fourth device uses at least two different receiving antennas to receive and measure the first signal sent by the first device.

[0207] Step 3: The fourth device obtains the signal arrival angle of the first device based on the measured phase of the first signal.

[0208] Assume that the phase of the first signal measured by the i-th antenna at the i-th time unit is The phase of the first signal measured by the j-th antenna at the j-th time unit is And the absolute time difference between the i-th time unit and the j-th time unit is Δt ij , the interval between the i-th antenna and the j-th antenna is a ij , f is the center frequency of the first signal, then:

[0209] In an optional embodiment, the phases measured by any i-th antenna and j-th antenna can be taken to calculate the signal arrival angle q of the first device. ij :

[0210] In an optional embodiment, the phases measured by multiple groups of i-th antennas and j-th antennas can be taken, and the multiple groups of signal arrival angles can be obtained by the above formula, and then combined (for example, taking the average) to obtain the final signal arrival angle of the first device to improve the reliability of the angle measurement.

[0211] In an optional embodiment, the fourth device can calculate the signal arrival angle by itself, or send the received first signal to the second device to complete the calculation; for the latter, the fourth device needs to report the original received signal or the measured phase, as well as other calculation parameters, such as antenna spacing.

[0212] Example 2

[0213] In the second embodiment, ranging is achieved based on absolute phase, and the specific process includes:

[0214] Step 1: The same as step 1 in the above embodiment 1, but the time domain resources do not need to meet the first condition, and the rest will not be repeated.

[0215] Step 2: With the configured signal parameters, on the specified resources, the third device sends a radio frequency carrier signal (i.e., the second signal) to the first device, the first device generates and sends the first signal through backscattering, and the fourth device uses at least one receiving antenna to receive and measure the first signal sent by the first device.

[0216] Step 3: The first device reports the modulation delay of the first signal (or additional phase deviation introduced due to modulation) to the fourth device or to the second device via the fourth device.

[0217] For example, if the phase deviation introduced by modulation is The modulation delay is t Mod ,but

[0218] Step 4-1 (corresponding to Case 1): The first device reports the phase of the second signal when it reaches the first device to the fourth device or to the second device via the fourth device.

[0219] For example, the phase of the second signal when it reaches the first device can be set to In Case 1, the phase of the second signal when it reaches the first device may be actively reported by the first device.

[0220] Step 4-2 (corresponding to Case 2): The fourth device estimates the phase of the second signal when it reaches the first device.

[0221] Case 2 is applicable to the case where the third device and the fourth device are the same device, and the transmitting antenna for the second signal and the receiving antenna for the first signal are on the same panel. In this case, the transmitting antenna and the receiving antenna in the fourth device have a fixed geometric relationship.

[0222] In an optional embodiment, the configuration of FIG8B can be considered. Assuming that the interval between the Tx antenna and the Rx1 antenna is b, the phase of the second signal when it reaches the first device is in, Determined by the distance between the third device / fourth device and the first device; Determined by the spacing b between the Tx antenna and Rx1 (assuming the Tx antenna is above Rx1) and the signal transmission / arrival direction θ, a possible expression is

[0223] Step 5: The fourth device calculates the distance from the first device to the fourth device.

[0224] Assume that the phase of the first signal measured by the i-th antenna is but:

[0225] In an optional embodiment, corresponding to Case 1: 1) the fourth device measures the arrival phase of the first signal; 2) the phase difference experienced by the first signal after it is sent from the first device and reaches the i-th antenna in the fourth device is 3) If we also need to consider the phase difference of the signal reaching the i-th antenna, we can also get in, is the phase difference between the first signal arriving at the i-th antenna and the earliest arriving antenna, b i0 is the distance between the i-th antenna and the antenna where the signal arrives earliest; 4) The fourth device calculates the distance of the first device to be

[0226] In an optional embodiment, corresponding to Case 2: 1) excluding After the phase difference is caused, the distance between the Tx antenna and the first device, and the distance between the first device and the receiving antenna are equal, but the frequencies of the two may be different, for example, the frequency of the second signal is f1, and the frequency of the first signal is f2; 2) Since the third device and the fourth device are the same device, the fourth device can measure the phase of the first signal reaching the receiving antenna. At the same time, the phase of the second signal when it is sent from the transmitting antenna can also be measured 3) The fourth device calculates the difference between the arrival phase of the first signal and the sending phase of the second signal as 4) The fourth device calculates the distance to the first device as

[0227] In an optional embodiment, the fourth device can calculate the distance to the first device by itself, or send the received signal to the second device to complete the calculation; in the latter case, the fourth device needs to report the original received signal or the measured phase, as well as other calculation parameters, such as antenna spacing, wait.

[0228] In an optional embodiment, the fourth device may use more than one receiving antenna to measure the first signal, thereby obtaining multiple sets of distances from the first device to the fourth device, and then merging them (such as taking the average) to improve the reliability of the distance measurement.

[0229] Example 3

[0230] In the third embodiment, the ranging is based on the carrier phase difference. The second embodiment relies on the absolute phase to measure the ranging, which requires compensation for the phase deviation caused by non-ideal factors, such as reporting This will bring some limitations to the application. Another option is to measure the phase difference between the two carriers to eliminate the phase deviation caused by these non-ideal factors.

[0231] Steps 1 and 2 are the same as steps 1 and 2 in the above embodiment 1, but time domain resources do not need to meet the first condition, while frequency domain resources need to meet the second condition. The rest will not be repeated.

[0232] The second condition is that the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies, for example, at two unequal center frequencies f a and f b , as shown in FIG8C. Preferably, f a and f b Half of the sum (i.e. (f a +f b ) / 2) is equal to the center frequency of the second signal. At this time, the first device can use double-sideband modulation (such as ASK, DSB-ASK, etc.) to implement it.

[0233] Step 3: The fourth device uses a receiving antenna (assuming the i-th antenna) to receive the a and f b Measure the first signal and get the phase difference between the two frequency points

[0234] Step 4. The fourth device calculates the distance from the first device to the fourth device.

[0235] In an optional embodiment, the fourth device calculates the distance of the first device to be

[0236] In an optional embodiment, if the phase difference of the signal reaching the i-th antenna needs to be considered, the phase difference can also be compensated. in, is the phase difference between the first signal arriving at the i-th antenna and the earliest arriving antenna, b i0 is the interval between the i-th antenna and the antenna where the signal arrives earliest, and then the above formula is applied to calculate the distance.

[0237] In an optional embodiment, the fourth device can calculate the distance to the first device by itself, or send the received signal to the second device to complete the calculation; for the latter, the fourth device needs to report the original received signal or the measured phase, as well as other calculation parameters, such as antenna spacing.

[0238] In an optional embodiment, the fourth device may use more than one receiving antenna to measure the first signal, thereby obtaining multiple sets of distances from the first device to the fourth device, and then merging them (such as taking the average) to improve the reliability of the distance measurement.

[0239] Alternatively, you can use more than one receiving antenna (assuming the i-th and j-th receiving antennas are used) to measure the phase at two center frequencies. This differs from the previous steps in the following ways:

[0240] Step 3: The fourth device uses the i-th and j-th receiving antennas to receive the a and f b Measure the first signal (i-th antenna corresponding to f a , j-th antenna corresponds to f b ), and get the phase difference between the two frequency points

[0241] Step 4: When calculating the distance, you need to compensate for the phase difference caused by different antennas. If the signal reaches the i-th receiving antenna first, then you need to add an offset Δ = -2πf to the phase difference calculated in step 3. a b ij sinθ / c, where b ij is the distance between the i-th receiving antenna and the j-th receiving antenna. If the signal reaches the j-th receiving antenna first, the offset is Δ=2πf b b ij sinθ / c, and the rest of the operations remain unchanged.

[0242] In addition, in the above step 1, the second device may further indicate to the fourth device the association between the receiving antenna and the signal center frequency, so as to measure the first signal at the corresponding center frequency using the receiving antenna.

[0243] The information processing method provided in the embodiment of the present application can be executed by an information processing device. In the embodiment of the present application, the information processing device provided in the embodiment of the present application is described by taking the information processing device executing the information processing method as an example.

[0244] Please refer to FIG. 9 , which is a schematic diagram of the structure of an information processing device provided in an embodiment of the present application. The device is applied to a first device. As shown in FIG. 9 , the information processing device 90 includes:

[0245] A first receiving module 91 is configured to receive first information sent by a second device, wherein the first information is used to configure or indicate a first resource and a first signal parameter of a first signal, where the first signal is a signal used for sensing or positioning;

[0246] A first sending module 92, configured to send the first signal to a fourth device on the first resource according to the first signal parameter;

[0247] Among them, the time domain resources of the first resource include multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement on each of at least two time units, and can complete at least one antenna switching between different time units; or, the frequency domain resources of the first resource meet: the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

[0248] Optionally, when the first signal is obtained by backscattering the second signal, the frequency domain resources of the first resource also satisfy: the average of the sum of the frequencies of all center frequency points of the first signal is equal to the frequency of the center frequency point of the second signal.

[0249] Optionally, the first resource includes at least one of the following:

[0250] Time domain resources;

[0251] Frequency domain resources;

[0252] Code domain resources.

[0253] Optionally, the first signal parameter includes at least one of the following:

[0254] the transmission power or reflection coefficient of the first signal;

[0255] sequence information of the first signal;

[0256] an encoding method of the first signal;

[0257] the encoding rate or encoding rate index of the first signal;

[0258] a modulation method of the first signal;

[0259] a modulation order or a modulation order index of the first signal;

[0260] Coding and modulation index of the first signal;

[0261] a demodulation reference signal or a time-frequency reference signal of the first signal;

[0262] a preamble of the first signal;

[0263] a synchronization sequence of the first signal;

[0264] device identification information carried by the first signal;

[0265] The scrambling method of the first signal.

[0266] Optionally, the information processing device 90 further includes:

[0267] A reporting module is used to report at least one of the following to the second device or the fourth device: the modulation delay of the first signal, the phase of the second signal when it reaches the first device; the second signal is the radio frequency carrier signal of the first signal.

[0268] The information processing device 90 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 4 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0269] Please refer to FIG. 10 , which is a schematic diagram of the structure of an information processing apparatus provided in an embodiment of the present application. The apparatus is applied to a third device. As shown in FIG. 10 , the information processing apparatus 100 includes:

[0270] The second receiving module 101 is configured to receive second information sent by a second device; wherein the second information is used to configure or indicate second resources and second signal parameters of the second signal;

[0271] A second sending module 102 is configured to send the second signal to the first device on the second resource according to the second signal parameter, wherein the second signal is used to generate the first signal by backscattering, and the first signal is a signal used for sensing or positioning;

[0272] Among them, the time domain resources of the second resources include multiple time units, and the multiple time units meet the following conditions: the fourth device used to receive the first signal can complete at least one phase measurement in at least two time units, and can complete at least one antenna switching between different time units; or, the frequency domain resources of the second resources meet: the center frequency of the second signal is related to the center frequency of the first signal, and the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

[0273] Optionally, the average of the sum of frequencies of all center frequency points of the first signal is equal to the frequency of the center frequency point of the second signal.

[0274] Optionally, the second resource includes at least one of the following: time domain resources, frequency domain resources, and code domain resources;

[0275] Alternatively, the second signal parameter includes at least one of the following: transmission power of the second signal, and sequence information of the second signal.

[0276] The information processing device 100 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 5 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0277] Please refer to FIG. 11 , which is a schematic diagram of the structure of an information processing device provided in an embodiment of the present application. The device is applied to the fourth device. As shown in FIG. 11 , the information processing device 110 includes:

[0278] The third receiving module 111 is configured to receive third information sent by the second device; wherein the third information is used to configure or indicate the first resource and first signal parameters of the first signal;

[0279] a fourth receiving module 112, configured to receive, on the first resource, a first signal sent by a first device according to the first signal parameter;

[0280] The execution module 113 is configured to perform perception or positioning according to the first signal.

[0281] Optionally, the time domain resource of the first resource includes multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement in each of at least two time units, and can complete at least one antenna switching between different time units;

[0282] The fourth receiving module 112 is specifically configured to: receive, according to the first signal parameter, the first signal sent by the first device in at least two time units using at least two receiving antennas.

[0283] Optionally, the execution module 113 is specifically used to: measure the phase of the first signal received by each of the at least two receiving antennas; and determine the signal arrival angle of the first device based on the measured phase of the first signal and the time interval between the first signals received by the at least two receiving antennas.

[0284] Optionally, the fourth receiving module 112 is specifically configured to: receive the first signal sent by the first device on the first resource using at least one receiving antenna according to the first signal parameter.

[0285] Optionally, the execution module 113 is specifically used to: measure the phase of the first signal received by the receiving antenna; determine the phase difference of the first signal from the first device to the fourth device based on the measured phase of the first signal, the modulation delay of the first signal, and the phase of the second signal when it reaches the first device; the second signal is the RF carrier signal of the first signal; and determine the distance from the first device to the fourth device based on the phase difference.

[0286] Optionally, the modulation delay of the first signal is reported by the first device to the fourth device;

[0287] Alternatively, the phase of the second signal when it reaches the first device is reported by the first device to the fourth device, or is estimated by the fourth device.

[0288] Optionally, the execution module 113 is specifically used to: measure the first phase of the first signal when it arrives at the receiving antenna, and measure the second phase of the second signal when it is emitted from the transmitting antenna, where the second signal is the RF carrier signal of the first signal; determine the difference between the arrival phase of the first signal and the sending phase of the second signal based on the first phase and the second phase, and the phase of the second signal arriving at the first device; determine the distance from the first device to the fourth device based on the difference between the arrival phase of the first signal and the sending phase of the second signal, and the frequencies of the first signal and the second signal.

[0289] Optionally, the frequency domain resources of the first resource satisfy: the first signal includes at least two parts, and the at least two parts are located at unequal center frequency points; the fourth receiving module 112 is specifically used to: according to the first signal parameters, use at least one receiving antenna to respectively receive at least two parts of the first signal located at unequal center frequency points.

[0290] Optionally, the execution module 113 is specifically configured to: measure the first signal at the at least two unequal center frequency points respectively to obtain a phase difference of the first signal at the unequal center frequency points; and perform any one of the following:

[0291] determining a distance from the first device to the fourth device based on the phase difference and a difference between designated frequencies of different portions of the first signal;

[0292] determining a distance from the first device to the fourth device based on the phase difference, the phase difference of the first signal arriving at the receiving antenna, and a difference between designated frequencies of different portions of the first signal;

[0293] A distance from the first device to the fourth device is determined based on the phase difference, the spacing between different receiving antennas, and the difference between the designated frequencies of different portions of the first signal.

[0294] Optionally, the first signal parameter includes at least one of the following:

[0295] the transmission power or reflection coefficient of the first signal;

[0296] sequence information of the first signal;

[0297] an encoding method of the first signal;

[0298] the encoding rate or encoding rate index of the first signal;

[0299] a modulation method of the first signal;

[0300] a modulation order or a modulation order index of the first signal;

[0301] Coding and modulation index of the first signal;

[0302] a demodulation reference signal or a time-frequency reference signal of the first signal;

[0303] a preamble of the first signal;

[0304] a synchronization sequence of the first signal;

[0305] device identification information carried by the first signal;

[0306] The scrambling method of the first signal.

[0307] The information processing device 110 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 6 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0308] Please refer to FIG. 12 , which is a schematic diagram of the structure of an information configuration apparatus provided in an embodiment of the present application. The apparatus is applied to a second device. As shown in FIG. 12 , the information configuration apparatus 120 includes:

[0309] The third sending module 121 is configured to perform a first operation, where the first operation includes at least one of the following: sending first information to a first device, sending second information to a third device, and sending third information to a fourth device;

[0310] The first information or the third information is used to configure or indicate the first resources and first signal parameters of the first signal, and the second information is used to configure or indicate the second resources and second signal parameters of the second signal; the second signal is the radio frequency carrier signal of the first signal, and the first signal is a signal used for perception or positioning.

[0311] Optionally, the time domain resources of the first resource include multiple time units, and the multiple time units meet the following conditions: the fourth device can complete at least one phase measurement on each of at least two time units, and can complete at least one antenna switching between different time units; or, the frequency domain resources of the first resource meet: the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

[0312] Optionally, the time domain resources of the second resource include multiple time units, and the multiple time units meet the following conditions: the fourth device used to receive the first signal can complete at least one phase measurement on each of at least two time units, and can complete at least one antenna switching between different time units; or, the frequency domain resources of the second resource meet: the center frequency of the second signal is related to the center frequency of the first signal, and the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

[0313] The information configuration device 120 provided in the embodiment of the present application can implement each process implemented by the method embodiment shown in Figure 4 and achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0314] As shown in Figure 13, an embodiment of the present application also provides a communication device 130, including a processor 131 and a memory 132, and the memory 132 stores a program or instruction that can be run on the processor 131. For example, when the communication device 130 is a first device, the program or instruction is executed by the processor 131 to implement the various steps of the information processing method embodiment shown in Figure 4 above, and can achieve the same technical effect. When the communication device 130 is a third device, the program or instruction is executed by the processor 131 to implement the various steps of the information processing method embodiment shown in Figure 5 above, and can achieve the same technical effect. When the communication device 130 is a fourth device, the program or instruction is executed by the processor 131 to implement the various steps of the information processing method embodiment shown in Figure 6 above, and can achieve the same technical effect. When the communication device 130 is a second device, the program or instruction is executed by the processor 131 to implement the various steps of the information configuration method embodiment shown in Figure 7 above, and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0315] 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 information processing method embodiment are implemented and the same technical effect can be achieved. To avoid repetition, it will not be repeated here.

[0316] The processor is the processor in the terminal described in the above embodiment. The readable storage medium includes a computer-readable storage medium, such as a computer read-only memory (ROM), random access memory (RAM), a magnetic disk, or an optical disk. In some examples, the readable storage medium may be a non-transitory readable storage medium.

[0317] 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 information processing method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0318] 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.

[0319] 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 information processing method embodiment and can achieve the same technical effect. To avoid repetition, it will not be repeated here.

[0320] An embodiment of the present application also provides a communication system, including: at least two of: a first device, a second device, a third device, and a fourth device, wherein the first device can be used to execute the steps of the method described in Figure 4, the third device can be used to execute the steps of the method described in Figure 5, the fourth device can be used to execute the steps of the method described in Figure 6, and the second device can be used to execute the steps of the method described in Figure 7.

[0321] 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 includes other elements that are 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.

[0322] 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.

[0323] 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. An information processing method, comprising: A first device receives first information sent by a second device; wherein, the first information is used to configure or indicate a first resource and first signal parameters of a first signal, and the first signal is a signal for sensing or positioning; The first device sends the first signal on the first resource to a fourth device according to the first signal parameters; Wherein, the time domain resource of the first resource includes a plurality of time units, and the plurality of time units meet the following conditions: the fourth device can complete at least one phase measurement on at least two time units respectively, and can complete at least one antenna switch between different time units; Alternatively, the frequency domain resource of the first resource meets: the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

2. The method according to claim 1, wherein, When the first signal is obtained by backscattering a second signal, the frequency domain resource of the first resource further meets: the mean value of the sum of the frequencies of all the center frequencies of the first signal is equal to the center frequency of the second signal.

3. The method according to claim 1 or 2, wherein The first resource includes at least one of the following: Time domain resource; Frequency domain resource; Code domain resource.

4. The method according to any one of claims 1 to 3, wherein The first signal parameters include at least one of the following: The transmission power or reflection coefficient of the first signal; The sequence information of the first signal; The coding method of the first signal; The coding rate or coding rate index of the first signal; The modulation method of the first signal; The modulation order or modulation order index of the first signal; The coding and modulation index of the first signal; The demodulation reference signal or time-frequency reference signal of the first signal; The preamble of the first signal; The synchronization sequence of the first signal; The device identification information carried by the first signal; The scrambling method of the first signal.

5. The method according to any one of claims 1 to 4, wherein The method further includes: The first device reports at least one of the following to the second device or the fourth device: the modulation delay of the first signal, the phase when the second signal arrives at the first device; wherein, the second signal is the radio frequency carrier signal of the first signal.

6. An information processing method, comprising: A third device receives second information sent by a second device; wherein, the second information is used to configure or indicate a second resource and second signal parameters of a second signal; The third device sends the second signal on the second resource to a first device according to the second signal parameters; wherein, the second signal is used to generate a first signal through backscattering, and the first signal is a signal for sensing or positioning; Wherein, the time domain resource of the second resource includes a plurality of time units, and the plurality of time units meet the following conditions: the fourth device for receiving the first signal can complete at least one phase measurement on at least two time units respectively, and can complete at least one antenna switch between different time units; Alternatively, the frequency domain resource of the second resource meets: the center frequency of the second signal is related to the center frequency of the first signal, and the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

7. The method according to claim 6, wherein, The mean value of the sum of the frequencies of all the center frequencies of the first signal is equal to the frequency of the center frequency of the second signal.

8. The method according to claim 6 or 7, wherein The second resource includes at least one of the following: time domain resource, frequency domain resource, code domain resource; Or The second signal parameter includes at least one of the following: the transmission power of the second signal, the sequence information of the second signal.

9. An information processing method, comprising: A fourth device receives third information sent by a second device; wherein the third information is used to configure or indicate a first resource and first signal parameters of a first signal; The fourth device receives a first signal sent by a first device on the first resource according to the first signal parameters; The fourth device performs sensing or positioning according to the first signal.

10. The method according to claim 9, wherein, The time domain resource of the first resource includes a plurality of time units, and the plurality of time units satisfy the following conditions: the fourth device can complete at least one phase measurement on at least two time units, and can complete at least one antenna switch between different time units; The fourth device receives a first signal sent by a first device on the first resource according to the first signal parameters, including: The fourth device respectively receives the first signals sent by the first device on at least two time units by using at least two receiving antennas according to the first signal parameters.

11. The method according to claim 10, wherein, The fourth device performs sensing or positioning according to the first signal, including: The fourth device measures the phase of the first signal received by each of the at least two receiving antennas. The fourth device determines the angle of arrival of the signal of the first device according to the measured phase of the first signal and the time interval between the first signals received by using the at least two receiving antennas.

12. The method according to claim 9, wherein The fourth device receives a first signal sent by a first device on the first resource according to the first signal parameters, including: The fourth device receives the first signal sent by the first device on the first resource by using at least one receiving antenna according to the first signal parameters.

13. The method according to claim 12, wherein, The fourth device performs sensing or positioning according to the first signal, including: The fourth device measures the phase of the first signal received by using the receiving antenna. The fourth device determines the phase difference of the first signal from the first device to the fourth device according to the measured phase of the first signal, the modulation delay of the first signal, and the phase when the second signal arrives at the first device; wherein the second signal is the radio frequency carrier signal of the first signal. The fourth device determines the distance from the first device to the fourth device according to the phase difference.

14. The method according to claim 13, wherein, The modulation delay of the first signal is reported by the first device to the fourth device; Or The phase when the second signal arrives at the first device is reported by the first device to the fourth device, or estimated by the fourth device.

15. The method according to claim 12, wherein The fourth device performs sensing or positioning according to the first signal, including: The fourth device measures a first phase when the first signal arrives at the receiving antenna, and measures a second phase when the second signal is sent from the transmitting antenna, where the second signal is a radio frequency carrier signal of the first signal; The fourth device determines a difference between an arrival phase of the first signal and a transmission phase of the second signal according to the first phase, the second phase, and a phase when the second signal arrives at the first device; The fourth device determines a distance from the first device to the fourth device according to the difference between the arrival phase of the first signal and the transmission phase of the second signal, and frequencies of the first signal and the second signal; 16. The method according to claim 9, wherein, The frequency domain resources of the first resource satisfy that: the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies; The fourth device receives the first signal sent by the first device on the first resource according to the first signal parameters, including: The fourth device respectively uses at least one receiving antenna to receive at least two parts of the first signal located at unequal center frequencies according to the first signal parameters.

17. The method according to claim 16, wherein, The fourth device performs sensing or positioning according to the first signal, including: The fourth device respectively measures the first signal at the at least two unequal center frequencies to obtain a phase difference of the first signal at the unequal center frequencies; The fourth device performs any one of the following: Determine a distance from the first device to the fourth device according to the phase difference and a specified frequency difference between different parts of the first signal; Determine a distance from the first device to the fourth device according to the phase difference, a phase difference when the first signal arrives at the receiving antenna, and a specified frequency difference between different parts of the first signal; Determine a distance from the first device to the fourth device according to the phase difference, an interval between different receiving antennas, and a specified frequency difference between different parts of the first signal.

18. The method according to any one of claims 9 to 17, wherein, The first signal parameters include at least one of the following: Transmission power or reflection coefficient of the first signal; Sequence information of the first signal; Coding mode of the first signal; Coding rate or coding rate index of the first signal; Modulation mode of the first signal; Modulation order or modulation order index of the first signal; Coding and modulation index of the first signal; Demodulation reference signal or time-frequency reference signal of the first signal; Preamble of the first signal; Synchronization sequence of the first signal; Device identification information carried by the first signal; Scrambling mode of the first signal.

19. An information configuration method, including: The second device performs a first operation; Wherein, the first operation includes at least one of the following: sending first information to the first device, sending second information to the third device, sending third information to the fourth device; Wherein, the first information or the third information is used to configure or indicate the first resource and the first signal parameters of the first signal, and the second information is used to configure or indicate the second resource and the second signal parameters of the second signal; the second signal is the radio frequency carrier signal of the first signal, and the first signal is a signal for sensing or positioning.

20. The method according to claim 19, wherein the time domain resource of the first resource includes a plurality of time units, and the plurality of time units satisfy the following conditions: the fourth device can complete at least one phase measurement on at least two time units respectively, and can complete at least one antenna switch between different time units; Or the frequency domain resource of the first resource satisfies: the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

21. The method according to claim 19 or 20, wherein the time domain resource of the second resource includes a plurality of time units, and the plurality of time units satisfy the following conditions: the fourth device for receiving the first signal can complete at least one phase measurement on at least two time units respectively, and can complete at least one antenna switch between different time units; Or the frequency domain resource of the second resource satisfies: the center frequency of the second signal is related to the center frequency of the first signal, the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

22. An information processing apparatus, comprising: a first receiving module, configured to receive first information sent by a second device; wherein, the first information is used to configure or indicate the first resource and the first signal parameters of the first signal, and the first signal is a signal for sensing or positioning; a first transmitting module, configured to transmit the first signal to a fourth device on the first resource according to the first signal parameters; wherein, the time domain resource of the first resource includes a plurality of time units, and the plurality of time units satisfy the following conditions: the fourth device can complete at least one phase measurement on at least two time units respectively, and can complete at least one antenna switch between different time units; Or the frequency domain resource of the first resource satisfies: the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

23. The apparatus according to claim 22, wherein, The first signal parameters include at least one of the following: the transmission power or reflection coefficient of the first signal; the sequence information of the first signal; the coding method of the first signal; the coding rate or coding rate index of the first signal; the modulation method of the first signal; the modulation order or modulation order index of the first signal; the coding and modulation index of the first signal; the demodulation reference signal or time-frequency reference signal of the first signal; the preamble of the first signal; the synchronization sequence of the first signal; the device identification information carried by the first signal; the scrambling method of the first signal.

24. An information processing apparatus, comprising: a second receiving module, configured to receive second information sent by a second device; wherein, the second information is used to configure or indicate the second resource and the second signal parameters of the second signal; A second transmission module, configured to transmit the second signal to a first device on the second resource according to the second signal parameter; wherein, the second signal is used to generate a first signal through backscattering, and the first signal is a signal for sensing or positioning. Wherein, the time domain resource of the second resource includes a plurality of time units, and the plurality of time units satisfy the following conditions: a fourth device for receiving the first signal can complete at least one phase measurement on at least two time units, and can complete at least one antenna switch between different time units. Alternatively, the frequency domain resource of the second resource satisfies: the center frequency of the second signal is related to the center frequency of the first signal, and the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

25. The apparatus according to claim 24, wherein, The second resource includes at least one of the following: a time domain resource, a frequency domain resource, and a code domain resource; Alternatively, The second signal parameter includes at least one of the following: the transmission power of the second signal, and the sequence information of the second signal.

26. An information processing apparatus, comprising: A third receiving module, configured to receive third information sent by a second device; wherein, the third information is used to configure or indicate a first resource and a first signal parameter of a first signal; A fourth receiving module, configured to receive a first signal sent by a first device on the first resource according to the first signal parameter; An execution module, configured to perform sensing or positioning according to the first signal.

27. The apparatus according to claim 26, wherein, The time domain resource of the first resource includes a plurality of time units, and the plurality of time units satisfy the following conditions: the apparatus can complete at least one phase measurement on at least two time units, and can complete at least one antenna switch between different time units. The fourth receiving module is specifically configured to: receive the first signal sent by the first device on at least two time units by using at least two receiving antennas according to the first signal parameter.

28. The apparatus according to claim 27, wherein, The execution module is specifically configured to: measure the phase of the first signal received by each of the at least two receiving antennas; determine the angle of arrival of the signal of the first device according to the measured phase of the first signal and the time interval between the first signals received by the at least two receiving antennas.

29. The apparatus according to claim 26, wherein, The fourth receiving module is specifically configured to: receive the first signal sent by the first device on the first resource by using at least one receiving antenna according to the first signal parameter; The execution module is specifically configured to perform any one of the following: Measure the phase of the first signal received by the receiving antenna; determine the phase difference of the first signal from the first device to the fourth device according to the measured phase of the first signal, the modulation delay of the first signal, and the phase when the second signal arrives at the first device, where the second signal is a radio frequency carrier signal of the first signal. Determine the distance from the first device to the fourth device according to the phase difference; Measure the first phase when the first signal arrives at the receiving antenna, and measure the second phase when the second signal is sent from the transmitting antenna, where the second signal is the radio frequency carrier signal of the first signal; determine the difference between the arrival phase of the first signal and the transmission phase of the second signal according to the first phase, the second phase, and the phase when the second signal arrives at the first device; determine the distance from the first device to the fourth device according to the difference between the arrival phase of the first signal and the transmission phase of the second signal, and the frequencies of the first signal and the second signal.

30. The apparatus according to claim 26, wherein, The frequency domain resources of the first resource satisfy: the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies; The fourth receiving module is specifically configured to: respectively receive at least two parts of the first signal located at unequal center frequencies by using at least one receiving antenna according to the first signal parameters.

31. The device according to claim 30, wherein, The execution module is specifically configured to: respectively measure the first signal at the at least two unequal center frequencies, obtain the phase difference of the first signal at the unequal center frequencies, and perform any one of the following: Determine the distance from the first device to the fourth device according to the phase difference and the frequency difference between the unequal center frequencies of the first signal; Determine the distance from the first device to the fourth device according to the phase difference, the phase difference when the first signal arrives at the receiving antenna, and the frequency difference between the unequal center frequencies of the first signal; Determine the distance from the first device to the fourth device according to the phase difference, the interval between different receiving antennas, and the frequency difference between the unequal center frequencies of the first signal.

32. An information configuration device, comprising: A third transmitting module, configured to perform a first operation, where the first operation includes at least one of the following: sending first information to a first device, sending second information to a third device, and sending third information to a fourth device; Wherein, the first information or the third information is used to configure or indicate the first resource and the first signal parameters of the first signal, and the second information is used to configure or indicate the second resource and the second signal parameters of the second signal; the second signal is the radio frequency carrier signal of the first signal, and the first signal is a signal for sensing or positioning.

33. The device according to claim 32, wherein, The time domain resources of the first resource include a plurality of time units, and the plurality of time units satisfy the following conditions: the fourth device can complete at least one phase measurement on at least two time units, and can complete at least one antenna switch between different time units; Or, The frequency domain resources of the first resource satisfy: the first signal includes at least two parts, and the at least two parts are located at unequal center frequencies.

34. The device according to claim 32 or 33, wherein The time domain resources of the second resource include a plurality of time units, and the plurality of time units satisfy the following conditions: a fourth device for receiving the first signal can complete at least one phase measurement on at least two time units respectively, and can complete at least one antenna switch between different time units; Or, The frequency domain resources of the second resource satisfy that: the center frequency point of the second signal is related to the center frequency point of the first signal, the first signal includes at least two parts, and the at least two parts are located at unequal center frequency points.

35. A communication device, comprising a processor and a memory, the memory stores a program or instructions that can run on the processor, and when the program or instructions are executed by the processor, the steps of the information processing method according to any one of claims 1 to 5 are implemented, or the steps of the information processing method according to any one of claims 6 to 8 are implemented, or the steps of the information processing method according to any one of claims 9 to 18 are implemented, or the steps of the information configuration method according to any one of claims 19 to 21 are implemented.

36. A readable storage medium, on which a program or instructions are stored, and when the program or instructions are executed by a processor, the steps of the information processing method according to any one of claims 1 to 5 are implemented, or the steps of the information processing method according to any one of claims 6 to 8 are implemented, or the steps of the information processing method according to any one of claims 9 to 18 are implemented, or the steps of the information configuration method according to any one of claims 19 to 21 are implemented.

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