Sensing method and apparatus

Abstract

A sensing method and apparatus. A UE receives first indication information, the first indication information being used for indicating suppression of a signal on a reflection path corresponding to a first beam, and the reflection path being a transmission path on which the signal is reflected by a sensing target; and on the basis of the first indication information, the UE sends a suppressed uplink reference signal on the reflection path corresponding to the first beam. In embodiments of the present application, first indication information can indicate suppression of a signal on a reflection path; and a terminal can suppress the signal on the reflection path on the basis of the first indication information, so that the influence of the signal on the reflection path on a signal on a scattering path can be reduced, thereby improving the sensing accuracy.

Description

A sensing method and device

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202411030310.8, filed on July 29, 2024, entitled "A Sensing Method and Apparatus", the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of sensing technology, and in particular to a sensing method and apparatus. Background Technology

[0004] One current sensing mode involves the terminal sending a sensing signal, which, after being reflected and / or scattered by the sensing target, reaches the base station, where the base station performs the sensing.

[0005] The sensing target can either reflect or scatter the sensing signal, allowing the signal to reach the base station via either a reflection path or a scattering path. However, the signal transmitted along the reflection path may have higher power, thus interfering with the signal along the scattering path and affecting sensing performance. Summary of the Invention

[0006] This application provides a sensing method and apparatus for reducing the interference of signals on the reflection path on signals on the scattering path.

[0007] Firstly, a first sensing method is provided, which can be applied to a terminal-side device, also referred to as a terminal device. This terminal device is, for example, a terminal equipment, or other equipment including terminal equipment functions, or a circuit, or a system-on-a-chip (or, a chip, such as a modem chip, also known as a baseband chip, or a system-on-a-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip) or other functional module, which can implement the functions of the terminal equipment, and is, for example, disposed within the terminal equipment. The method includes: receiving first indication information, the first indication information indicating suppression of a signal on a reflection path corresponding to a first beam, the reflection path being a transmission path through which the signal is reflected by a sensing target; and transmitting a suppressed uplink reference signal on the reflection path corresponding to the first beam according to the first indication information.

[0008] In this embodiment, the first indication information can indicate the suppression of signals on the reflection path. Based on the first indication information, the terminal can suppress signals on the reflection path, thereby reducing the influence of signals on the reflection path on signals on the scattering path and improving sensing accuracy.

[0009] In an optional implementation, the method further includes: transmitting an unsuppressed uplink reference signal on the scattering path corresponding to the first beam, wherein the scattering path is the transmission path through which the signal is scattered by the sensing target. The terminal may not suppress the signal on the scattering path, but since the signal on the reflection path is suppressed, the influence of the signal on the scattering path can be reduced, which is equivalent to improving the transmission quality of the signal on the scattering path, thereby improving the sensing accuracy.

[0010] In one optional implementation, the suppressed uplink reference signal is beamformed according to the first indication information, and the beamforming is used to reduce the transmission power of the uplink reference signal on the reflection path corresponding to the first beam. One possible way for the terminal to suppress the signal on the reflection path is to perform beamforming on the signal on the reflection path, thereby suppressing the signal on that reflection path. In this method, "suppression" can be understood as reducing transmission power.

[0011] In an optional implementation, the first indication information is included in the first configuration information, which is used to configure the uplink reference signal resources corresponding to the first beam. Transmitting the suppressed uplink reference signal on the reflection path corresponding to the first beam includes: transmitting the suppressed uplink reference signal on the reflection path corresponding to the first beam according to the uplink reference signal resources. The first indication information can be included in the first configuration information for configuring the uplink reference signal resources, rather than being transmitted as a separate signaling, thus saving transmission overhead.

[0012] In an optional implementation, before receiving the first indication information, the method further includes: receiving a downlink reference signal on the first beam; determining, based on a measurement result of the downlink reference signal, that the first beam has the reflection path; and transmitting information about the reflection path. The terminal can determine whether one or more beams have a reflection path, and for beams with reflection paths, the network device can instruct the terminal to suppress signals on their reflection paths.

[0013] In one optional implementation, determining the existence of the reflection path of the first beam based on the measurement results of the downlink reference signal includes: determining that the received power of the downlink reference signal is greater than or equal to a first threshold based on the measurement results; or, determining that the signal-to-noise ratio of the downlink reference signal is greater than or equal to a second threshold based on the measurement results; or, determining that the ratio of the peak power of the first path to the peak power of the second path is greater than or equal to a third threshold based on the measurement results, wherein the first path is the transmission path with the highest received power corresponding to the first beam, and the second path is any transmission path corresponding to the first beam other than the transmission path with the highest received power. Several methods for a terminal to determine whether a reflection path exists for the first beam are given. In addition, the terminal may use other methods to determine whether a reflection path exists for the first beam, and there are no restrictions on this.

[0014] In one optional implementation, the reflection path information includes information about the first beam corresponding to the reflection path, wherein the information about the first beam includes the angle of arrival corresponding to the first beam. The reflection path information may include information about the beam corresponding to the reflection path, enabling the network device to determine which beams have reflection paths, thereby instructing the terminal to suppress reflection paths on those beams.

[0015] In an optional implementation, the method further includes: receiving first information, the first information being used to acquire information about the reflection path. The network device can send the first information to acquire the reflection path information, and the terminal can send the reflection path information to the network device upon receiving the first information, making the terminal's reporting more efficient.

[0016] Secondly, a second sensing method is provided, which can be applied to a network-side device, also referred to as a network device. This network device is, for example, an access network device, or other device including access network device functions, or a circuit, or a system-on-a-chip (or chip), or other functional module capable of implementing the functions of the network device, and is, for example, disposed within the network device. The access network device can be a non-ORAN architecture or an ORAN architecture; or, the access network device can be a CU, DU, or RU under an ORAN architecture. The access network device is, for example, located on the ground, or the access network device is, for example, a satellite, or located on a satellite. The method includes: transmitting first indication information, the first indication information being used to indicate suppression of signals on a reflection path corresponding to a first beam, the reflection path being the transmission path of the signal reflected by the sensing target; and receiving a suppressed uplink reference signal on the reflection path corresponding to the first beam.

[0017] In an optional implementation, the method further includes: receiving an unsuppressed uplink reference signal on a scattering path corresponding to the first beam, wherein the scattering path is a transmission path through which the signal is scattered by the sensing target.

[0018] In one optional implementation, the first indication information is included in the first configuration information, which is used to configure the uplink reference signal resource corresponding to the first beam. Receiving the suppressed uplink reference signal on the reflection path corresponding to the first beam includes: receiving the suppressed uplink reference signal on the reflection path corresponding to the first beam according to the uplink reference signal resource.

[0019] In an optional implementation, the method further includes: transmitting a downlink reference signal in the first beam; and receiving information about the reflection path.

[0020] In one optional implementation, the information of the reflection path includes the information of the first beam corresponding to the reflection path, wherein the information of the first beam includes the angle of arrival corresponding to the first beam.

[0021] In an optional implementation, the method further includes: sending first information, the first information being used to obtain information about the reflection path.

[0022] For the technical effects of the optional implementation methods of the second aspect, please refer to the introduction of the technical effects of the first aspect or corresponding implementation methods.

[0023] Thirdly, an apparatus is provided. The apparatus can be a terminal-side device as described in the first aspect above. The apparatus possesses the functions of the aforementioned terminal-side device. For example, the apparatus can implement the functions described in the first aspect above. For instance, the apparatus includes modules, units, or means corresponding to performing the operations involved in the first aspect above. These modules, units, or means can be implemented through software, hardware, or a combination of software and hardware. The apparatus is, for example, a terminal device, or other device including terminal device functions, or a chip system (or chip or circuit) or other functional module. This chip system or functional module can implement the functions of a terminal device, and is, for example, disposed in a terminal device. In one optional implementation, the apparatus includes a baseband device and a radio frequency device. In another optional implementation, the apparatus includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). The transceiver unit can implement both transmitting and receiving functions. When the transceiver unit implements the transmitting function, it can be called a transmitting unit (sometimes also called a transmitting module), and when the transceiver unit implements the receiving function, it can be called a receiving unit (sometimes also called a receiving module). The transmitting unit and the receiving unit can be the same functional module, which is called the transceiver unit. This functional module can realize the transmitting and receiving functions; or, the transmitting unit and the receiving unit can be different functional modules, and the transceiver unit is a general term for these functional modules.

[0024] In one optional implementation, the transceiver unit (or the receiving unit) is configured to receive first indication information, the first indication information being used to indicate the suppression of signals on the reflection path corresponding to the first beam, the reflection path being the transmission path through which the signal is reflected by the sensing target; the transceiver unit (or the sending unit) is configured to send the suppressed uplink reference signal on the reflection path corresponding to the first beam according to the first indication information.

[0025] In an alternative embodiment, the device further includes a storage unit (sometimes also called a storage module), the processing unit being coupled to the storage unit and executing programs or instructions in the storage unit to enable the device to perform the functions of the terminal-side device described in the first aspect above.

[0026] Fourthly, an apparatus is provided. The apparatus can be a network-side device as described in the second aspect above. The apparatus possesses the functions of the aforementioned network-side device. For example, the apparatus can implement the functions described in the second aspect above. For instance, the apparatus includes modules, units, or means corresponding to performing the operations involved in the second aspect above. These modules, units, or means can be implemented through software, hardware, or a combination of software and hardware. The apparatus is, for example, a network device, or other device including network device functions, or a chip system (or chip or circuit) or other functional module capable of implementing the functions of a network device. This chip system or functional module is, for example, disposed within a network device. The network device includes, for example, an access network device. In one optional implementation, the apparatus includes a baseband device and a radio frequency device. In another optional implementation, the apparatus includes a processing unit (sometimes also called a processing module) and a transceiver unit (sometimes also called a transceiver module). For details on the implementation of the transceiver unit, please refer to the relevant description in the third aspect.

[0027] In one optional implementation, the transceiver unit (or the transmitting unit) is configured to transmit first indication information, the first indication information being used to indicate the suppression of signals on the reflection path corresponding to the first beam, the reflection path being the transmission path through which the signal is reflected by the sensing target; the transceiver unit (or the receiving unit) is configured to receive the suppressed uplink reference signal on the reflection path corresponding to the first beam.

[0028] In an alternative embodiment, the device further includes a storage unit (sometimes also called a storage module), the processing unit being coupled to the storage unit and executing programs or instructions in the storage unit to enable the device to perform the functions of the network-side device described in the second aspect above.

[0029] Fifthly, an apparatus is provided, the apparatus comprising a memory and one or more processors. The memory is used to store part or all of a computer program or instructions necessary for implementing the functions described in the first aspect above. The one or more processors are executable to carry out the computer program or instructions, such that, when executed, the apparatus implements the methods in any possible design or implementation of the first aspect above.

[0030] In one possible design, the device may further include interface circuitry, wherein the processor is configured to communicate with other devices or components via the interface circuitry.

[0031] In one possible design, the device may also include the memory.

[0032] The aforementioned device may be a terminal, or a communication module in the terminal, or a chip in the terminal responsible for communication functions such as a modem chip (also known as a baseband chip) or a SoC or SIP chip containing a modem module.

[0033] A sixth aspect provides an apparatus comprising a memory and one or more processors. The memory is used to store part or all of a computer program or instructions necessary for implementing the functions described in the second aspect above. The one or more processors are executable to carry out the computer program or instructions, such that, when executed, the apparatus implements the methods in any possible design or implementation of the second aspect above.

[0034] In one possible design, the device may further include interface circuitry, wherein the processor is configured to communicate with other devices or components via the interface circuitry.

[0035] In one possible design, the device may also include the memory.

[0036] The aforementioned device may be a network device, a communication module in a network device, or a chip in a network device that is responsible for communication functions, such as a modem chip (also known as a baseband chip) or a SoC or SIP chip that contains a modem module.

[0037] A seventh aspect provides a communication system including a second means, wherein the second means is configured to perform the method described in the second aspect above. For example, the second means may be implemented using the means described in the fourth or sixth aspect.

[0038] Optionally, the communication system further includes a first device, wherein the first device is used to perform the method described in the first aspect above. For example, the first device can be implemented using the device described in the third or fifth aspect.

[0039] Eighthly, a computer-readable storage medium is provided for storing a computer program or instructions that, when executed, cause the methods performed by the terminal-side device or network-side device in the above aspects to be implemented.

[0040] Ninthly, a computer program product containing instructions is provided, which, when the computer program or instructions are run on a computer, causes the methods described in the above aspects to be implemented.

[0041] In a tenth aspect, a chip system is provided, including a processor and an interface, the processor being configured to call and execute instructions from the interface to enable the chip system to implement the methods described above. Attached Figure Description

[0042] Figure 1A is a schematic diagram of the access network equipment structure under the ORAN architecture;

[0043] Figure 1B is a schematic diagram of one structure of the RAN chip;

[0044] Figures 2A and 2B are schematic diagrams of single-station sensing mode and dual-station sensing mode, respectively.

[0045] Figure 3 shows an example of beamforming;

[0046] Figures 4 and 5 are schematic diagrams of two network architectures applied in the embodiments of this application;

[0047] Figures 6 and 8 are flowcharts of several sensing methods provided in the embodiments of this application;

[0048] Figure 7 is an example of a communication path between a network device and a UE in an embodiment of this application;

[0049] Figure 9 is a schematic diagram of a device provided in an embodiment of this application;

[0050] Figure 10 is a schematic diagram of another device provided in an embodiment of this application. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0052] In this application embodiment, the number of nouns, unless otherwise specified, refers to "singular nouns or plural nouns," that is, "one or more." "At least one" means one or more, and "more than one" means two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, or B exists alone, where A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. For example, A / B means: A or B. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c means: a, b, c, a and b, a and c, b and c, or a and b and c, where a, b, and c can be single or multiple.

[0053] The ordinal numbers such as "first" and "second" mentioned in the embodiments of this application are used to distinguish multiple objects, and are not used to limit the size, content, order, timing, priority, or importance of the multiple objects. Furthermore, the numbering of steps in the various embodiments described in this application is only to distinguish different steps and is not used to limit the order in which the steps are performed.

[0054] The following explanations of some terms or concepts used in the embodiments of this application are provided to facilitate understanding by those skilled in the art.

[0055] In this embodiment, the terminal device is a device with wireless transceiver capabilities, which can be a fixed device, a mobile device, a handheld device (e.g., a mobile phone), a wearable device, an in-vehicle device, or a wireless device (e.g., a communication module, a modem, or a chip system, etc.) built into the aforementioned devices. The terminal device is used to connect people, objects, machines, etc., and can be widely used in various scenarios, including but not limited to the following: sensing scenarios, cellular communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine / machine-type communications (M2M / MTC) communication, Internet of Things (IoT), virtual reality (VR), augmented reality (AR), industrial control, self-driving, remote medical care, smart grid, smart furniture, smart office, smart wearables, smart transportation, smart city, drones, robots, and indoor commercial scenarios (such as mobile phone screen mirroring, file sharing, and mobile phone to VR glasses video transmission). When the terminal equipment is applied to V2X, it can also be called a V2X device, such as a smart car, digital car, unmanned car, driverless car, pilotless car, or automobile, self-driving car, or autonomous car, pure electric vehicle (EV), hybrid electric vehicle (HEV), range-extended electric vehicle (REEV), plug-in hybrid electric vehicle (PHEV), new energy vehicle, or roadside unit (RSU). The terminal equipment can also be a device used in D2D communication, such as an electricity meter or water meter.

[0056] Furthermore, in this embodiment of the application, the terminal device can also be a terminal device in an Internet of Things (IoT) system. IoT is an important component of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network of human-machine interconnection and object-to-object interconnection.

[0057] The various terminal devices described above, if located in a vehicle (e.g., placed inside or installed inside a vehicle), can all be considered in-vehicle terminal devices, also known as on-board units (OBUs). The terminal device of this application can also be an in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit built into a vehicle as one or more components or units. The vehicle can implement the methods of this application through the built-in in-vehicle module, in-vehicle component, in-vehicle chip, or in-vehicle unit.

[0058] The terminal equipment may sometimes be referred to as user equipment (UE), terminal, access station, UE station, remote station, wireless communication equipment, or user device, etc.

[0059] In this application embodiment, the communication device used to implement the terminal device function can be a terminal device, which can be a terminal device or a device capable of supporting the terminal device to implement the function, such as a chip system. This device can be installed in the terminal device. In the technical solutions provided in this application embodiment, the example of a terminal device being used to implement the terminal device function is used to describe the technical solutions provided in this application embodiment.

[0060] The network devices in this application embodiment include, for example, access network devices (or access network elements) and / or core network devices (or core network elements). The access network devices are devices with wireless transceiver capabilities, used to communicate with the terminal devices. The access network devices include, but are not limited to, base stations (base transceiver stations, BTS, Node B, evolved Node B (eNodeB) / eNB, or the next generation Node B (gNodeB) / gNB), transmission reception points (TRPs), base stations evolved from the 3rd generation partnership project (3GPP), access nodes in wireless fidelity (Wi-Fi) systems, wireless relay nodes, wireless backhaul nodes, etc. The base stations can be: macro base stations, micro base stations, pico base stations, small cells, relay stations, etc. Multiple base stations can support networks using the same access technology or networks using different access technologies. A base station can contain one or more co-located or non-co-located transmission and reception points. The access network equipment can also be a radio controller, centralized unit (CU), and / or distributed unit (DU) in a cloud radio access network (CRAN) scenario. The access network equipment can also be a server, etc. For example, the network equipment in V2X technology can be a roadside unit (RSU). The following description uses a base station as an example to illustrate the access network equipment. A base station can communicate with a terminal device, or it can communicate with a terminal device through a relay station. A terminal device can communicate with multiple base stations in different access technologies. The core network equipment is used to implement functions such as mobility management, data processing, session management, policy and billing. The names of the equipment implementing core network functions may differ in systems using different access technologies; this application does not limit this.Taking the 5th generation (5G) mobile communication technology system as an example, the core network equipment includes, for example, access and mobility management function (AMF), session management function (SMF), policy control function (PCF), or user plane function (UPF), etc.

[0061] In a CU-DU architecture, or in an open RAN (ORAN) system, access network equipment can include one or more logical network elements such as a central unit (CU), a distributed unit (DU), a CU-control plane (CP), a CU-user plane (UP), or a radio unit (RU). CUs and DUs can be separate entities or included in the same network element, such as a baseband unit (BBU). RUs can be included in radio equipment or radio units, such as remote radio units (RRUs), active antenna units (AAUs), or remote radio heads (RRHs). One possible structure for access network equipment is shown in Figure 1A. In this structure, core network equipment and access network equipment can communicate via a backhaul link; within the access network equipment, CUs and DUs can communicate via a midhaul link, and DUs and RUs can communicate via a fronthaul link.

[0062] Alternatively, another architecture for the access network device can be seen in Figure 1B, which illustrates an access network device implemented using a chip, such as a RAN chip. The RAN chip may include a CU, DU, and RU. The CU can perform L2 and L3 functions, etc.; the DU can perform L1 functions and some L2 functions, etc.; and the RU can perform L1 computation and radio frequency (RF) digital functions, etc. The CU communicates with the core network device through a backhaul interface, which carries the traffic between the CU and the core network device. The CU may include a central processing unit (CPU) based on x86 architecture or advanced instruction set computing (RISC) machine (ARM) architecture, as well as field-programmable gate arrays (FPGAs), graphics processing units (GPUs), or other accelerators. The CPU can communicate with the FPGA, GPU, or other accelerators via a peripheral component interconnect express (PCIe) interface.

[0063] The CU and DU communicate via a midhaul interface, which carries the traffic between the CU and DU. The DU may include an x86 or ARM architecture CPU, as well as FPGAs, GPUs, or other accelerators, which can communicate with the FPGA, GPU, or other accelerators via a PCIe interface.

[0064] The DU and RU communicate via a fronthaul interface, which carries the traffic between the DU and RU. If the access network equipment uses an integrated DU, the integrated DU can include the functions of both the DU and RU, and the RAN may no longer need to include a separate RU. The RU may include a RAN fronthaul processing unit, a digital processing unit, and an RF processing unit. The RAN fronthaul processing unit is implemented, for example, using an FPGA or an application-specific integrated circuit (ASIC). The digital processing unit is implemented, for example, using an FPGA or an ASIC.

[0065] The RU can be connected to an antenna to communicate with the UE via the antenna.

[0066] In different systems, CU (or CU-CP and CU-UP), DU, or RU may have different names, but those skilled in the art will understand their meaning. For example, in an ORAN system, CU can also be called an open CU (O-CU), DU can also be called an open DU (O-DU), CU-CP can also be called an open CU-CP (O-CU-CP), CU-UP can also be called an open CU-UP (O-CU-CP), and RU can also be called an open RU (O-RU). For ease of description, this application uses CU, CU-CP, CU-UP, DU, and RU as examples in its embodiments. Any of the units among CU (or CU-CP, CU-UP), DU, and RU in the embodiments of this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0067] The CU and DU can be configured according to the protocol layer functions of the wireless network they implement. For example, the CU can be configured to implement the functions of the Packet Data Convergence Protocol (PDCP) layer and above (such as the Radio Resource Control (RRC) layer and / or the Service Data Adaptation Protocol (SDAP) layer); the DU can be configured to implement the functions of protocol layers below the PDCP layer (such as one or more of the Radio Link Control (RLC) layer, Media Access Control (MAC) layer, or Physical (PHY) layer). As another example, the CU can be configured to implement the functions of protocol layers above the PDCP layer (such as the RRC and / or SDAP layers), and the DU can be configured to implement the functions of protocol layers below the PDCP layer (such as one or more of the RLC, MAC, or PHY layers).

[0068] The above CU and DU configurations are merely examples; the functions of the CU and DU can be configured as needed. For instance, the CU or DU can be configured to have more protocol layer functions, or only some protocol layer processing functions. For example, some RLC layer functions and protocol layer functions above the RLC layer can be placed in the CU, while the remaining RLC layer functions and protocol layer functions below the RLC layer can be placed in the DU. Furthermore, the functions of the CU or DU can be divided according to service type or other system requirements, such as by latency. Functions that require low latency can be placed in the DU, while functions that do not require low latency can be placed in the CU.

[0069] DU and RU can cooperate to implement the functions of the PHY layer. A DU can be connected to one or more RUs. The functions of DU and RU can be configured in various ways depending on the design. For example, a DU can be configured to implement baseband functions, and an RU can be configured to implement mid-RF functions. Another example is that a DU can be configured to implement higher-level functions in the PHY layer, and an RU can be configured to implement lower-level functions in the PHY layer, or to implement both lower-level and RF functions. Higher-level functions in the physical layer can include a portion of the physical layer's functions that are closer to the MAC layer, while lower-level functions in the physical layer can include another portion of the physical layer's functions that are closer to the mid-RF side.

[0070] In this application embodiment, the communication device used to implement the functions of a network device can be called a network device. This network device can be a network element, a network device, or a device capable of supporting the network device or network element to implement the function, such as a chip system. This device can be installed in the network device. In the technical solutions provided in this application embodiment, the device used to implement the functions of a network device is described as a network device (for example, the device used to implement the functions of an access network device is an access network device, and the device used to implement the functions of a core network device is a core network device).

[0071] A sensing signal is a signal used to sense (or detect) a target (or object). Sensing signals can also be called detection signals, linear frequency modulated signals, radar signals, radar sensing signals, radar detection signals, or environmental sensing signals, etc. Sensing signals can be pulse signals or signals from wireless communication systems. For example, a sensing signal can be an orthogonal frequency division multiplexing (OFDM) signal obtained by modulating a specific sequence on a subcarrier. This specific sequence can be any of the following sequences: Zadoff-Chu sequence (ZC sequence), pseudo-random sequence, or predefined sequence. Pseudo-random sequences include any of the following sequences: longest linear feedback shift register sequence (m-sequence) or Gold sequence. Predefined sequences can be, for example, random data symbols, such as random data symbols modulated by quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM).

[0072] An echo signal is a signal generated when a sensed signal is reflected by a target. Both the echo signal and the sensed signal can reflect the parameters of the target. For example, the time delay of the echo signal relative to the sensed signal can reflect the distance of the target relative to the transmitter, and the Doppler shift of the echo signal relative to the sensed signal can reflect the velocity of the target.

[0073] Communication-sensing fusion signals, also known as synthetic-sensing fusion signals, synthetic signals, or integrated synthetic-sensing signals, are signals used for both communication and sensing. When used for communication, the fusion signal carries the communication data or reference signal sequence that needs to be transmitted between communication devices. When used for sensing, the fusion signal can be understood as being used to sense (or detect) targets.

[0074] For example, the signals used for sensing described herein (such as the uplink reference signal mentioned later) may include sensing signals and / or synesthetic fusion signals.

[0075] The target can be any tangible object in the environment that can reflect electromagnetic waves, such as mountains, forests, or buildings, and can also include mobile objects such as vehicles, drones, pedestrians, and terminal devices. The target can also be referred to as a sensing target, detection target, perceived target, detected target, perceived object, detected object, or sensed device, etc., and the embodiments of this application do not limit it.

[0076] For a long time, wireless sensing has been an independently developed technology. Sensing services are provided by various specialized sensing devices, such as conventional radar, lidar, computed tomography (CT), and magnetic resonance imaging (MRI). In 5G and earlier communication systems, positioning was the sensing service that mobile communication systems could provide. In future mobile communication systems, general sensing services other than positioning will be integrated into the communication system, becoming a completely new function, thereby opening up entirely new services, such as high-precision positioning, environmental reconstruction, and gesture and motion recognition.

[0077] Among them, sensing network elements can reconstruct the environment of a target area through means such as lasers, radars, or base stations. For example, sensing network elements can reconstruct the real physical environment based on the measurement results reported by devices such as lasers, radars, or base stations. For example, based on the measurement results, sensing network elements can reconstruct environmental information using methods such as scattering polygons to characterize various scattering objects in the environment, such as walls and furniture (also known as sensing targets, targets, or target objects).

[0078] For sensing, based on the different senders and receivers of the sensing signal, sensing modes can be divided into two types: single-site sensing and dual-site sensing. Single-site sensing mode, also known as self-transmitting and self-receiving mode, single-end sensing mode, or monocentric sensing mode, refers to the same device transmitting the sensing signal and receiving the echo signal reflected from the target, as shown in Figure 2A, where both the transmitting and receiving devices are device 1. Dual-site sensing mode, also known as A-transmitting and B-receiving mode or self-transmitting and other-receiving mode, refers to different devices transmitting the sensing signal and receiving the echo signal reflected from the target, as shown in Figure 2B, where the transmitting device is device 2 and the receiving device is device 3. Figures 2A and 2B both use a vehicle as an example of the sensing target. For example, in Figure 2A, device 1 is a base station or UE. In single-site sensing mode, device 1 transmits the sensing signal, and device 1 receives the echo signal generated by the reflection, scattering, or diffraction of the sensing signal by a sensing target in the environment (e.g., the vehicle in Figure 2A) for environmental sensing. For example, in Figure 2B, device 2 is a base station or UE, and device 3 is a base station or UE. In the dual-station sensing mode, device 1 sends a sensing signal, and device 2 receives the echo signal generated by the reflection, scattering or diffraction of the sensing signal by a scatterer in the environment (such as a vehicle in Figure 2B) to perform environmental sensing.

[0079] When performing sensing operations, if multiple sensing targets need to be detected, beamforming can be used to improve the detection accuracy. Beamforming technology, as an advanced signal processing technique, is widely used in base stations. Also known as beamforming or spatial filtering, beamforming is a signal processing technique for directional transmission and reception of signals from an array. Based on antenna arrays, beamforming technology controls the direction and shape of the beam by adjusting the weighting coefficients or phase of each antenna element, forming a narrower, more directional beam. This technique reduces signal interference and attenuation during propagation, improving signal transmission efficiency and coverage. Furthermore, this technique allows the beam to be accurately pointed at the target user, or in other words, enhances the signal in certain directions. Referring to Figure 3, which illustrates an example of beamforming, a base station can transmit different beams in multiple directions, determined by beamforming technology.

[0080] A sensing target can either reflect or scatter a sensing signal, allowing the signal to reach the base station via either a reflection path or a scattering path. The reflection path refers to the transmission path of the signal after reflection by the sensing target; for example, if the sensing signal is reflected by the sensing target, it reaches the base station via the reflection path. The scattering path refers to the transmission path of the signal after scattering by the sensing target; for example, if the sensing signal is scattered by the sensing target, it reaches the base station via the scattering path. For instance, sensing signals transmitted by a UE on the same beam can reach the base station via either the reflection path or the scattering path. However, sensing signals transmitted via the reflection path may have higher power, thus interfering with sensing signals transmitted via the scattering path and affecting sensing performance.

[0081] Therefore, in this embodiment of the application, the first indication information can indicate the suppression of signals on the reflection path. Based on the first indication information, the UE can suppress signals on the reflection path, thereby reducing the influence of signals on the reflection path on signals on the scattering path and improving sensing accuracy.

[0082] Referring to Figure 4, which is a schematic diagram of a potential sensing network architecture, Figure 4 is based on a 5G core network (5G core, 5GC). The network architecture shown in Figure 4 can also be an application scenario of the embodiments of this application.

[0083] In the architecture shown in Figure 4, a new sensing function (SF) network element has been added, which can also be simply referred to as the sensing network element. This SF can be a device or component that provides sensing functionality to the network; it can also be called a sensing management function (SMF), or have other names. The SF can be deployed on the core network side or the RAN side; Figure 4 shows an example of deployment on the core network. In the network architecture shown in Figure 4, the SF can reuse the interfaces between the location management function (LMF) and other 5GC network elements such as the AMF, network exposure function (NEF), unified data management (UDM), network data analytics function (NWDAF), and PCF for sensing interaction. Sensing signaling between the SF and the radio access network (RAN) or UE can be transmitted through the AMF; sensing measurement data acquired by the RAN or UE can be transmitted to the SF via the control plane, for example, by using the reused long term evolution (LTE) positioning protocol (LPP) or new radio (NR) positioning protocol annex (NRPPa) protocol, or it can be transmitted through the user plane, forwarded to the SF via the UPF, or directly transmitted to the SF.

[0084] The newly added SF in this network architecture can realize basic sensing functions, such as sensing authorization, sensing control, sensing measurement data processing, or result output. Specifically, interfaces are set up and interaction is established between the SF and 5GC network elements such as AMF, NEF, UDM, NWDAF, PCF, LMF, and UPF, as defined below.

[0085] NS1: A new interface between SF and AMF, which can transmit sensing and control signaling. Additionally, this interface can also transmit sensing measurement data in scenarios where sensing measurement data is uploaded to the control plane.

[0086] NS2: A new interface between SF and NEF. This interface can transmit signaling messages between sensing network elements relayed through NEF and application functions (AF) on the service side, and at the same time open the sensing results to the AF.

[0087] NS3: A new interface between SF and UDM. This interface can be used for authentication or authorization, and to obtain UE-aware subscription information, service AMF information, or other information.

[0088] NS4: A new interface between SF and NWDAF. Through this interface, SF and NWDAF can jointly complete artificial intelligence (AI) processing related to perception services.

[0089] NS5: A new interface between SF and PCF. Through this interface, SF can transmit information such as sensing requirements, quality of service (QoS) requirements, or sensing results of sensing services to PCF. PCF can then make decisions to generate policy control and charging (PCC) policies related to sensing services.

[0090] NS6: A new interface between SF and LMF. Through this interface, SF can obtain location-related information, such as the sensing area, the RAN information of the sensing target, and the location information of the sensed UE.

[0091] NS7: A new interface between SF and UPF. Sensing measurement data can be directly transmitted from (R)AN to SF via UPF, or indirectly forwarded to SF via UPF. In scenarios where (R)AN performs sensing, forwarding via UPF can improve the functionality of UPF to support data transmission at the (R)AN granularity.

[0092] In addition to the newly added interfaces mentioned above, existing interfaces (such as N1, N2, N5, N8, N33, etc.) can also support the transmission of information related to sensing services, such as authentication information, sensing service type, sensing service quality requirements, sensing measurement data, or sensing results, etc.

[0093] Figure 4 illustrates an example where the SF (Sensitive Detection) is an independent device. Alternatively, the SF and LMF (Local Management Detector) can be co-located, meaning the network element handling sensing services and the network element handling location services can be the same. Alternatively, the SF can be co-located with other core network elements, such as the AMF (Auxiliary Location Detector). The LMF is the core network element in the 5GC that provides control plane positioning. It can calculate and feedback location information in the 5G network, providing functions such as positioning process management, UE capability acquisition, auxiliary data provision, and UE location estimation. Optionally, if the SF and LMF are co-located, the LMF and the gateway mobile location center (GMLC) can be functionally enhanced to support basic sensing functions. The GMLC can be the first network element within the operator's network to process sensing requests, performing privacy checks or authorization functions, routing sensing requests to the AMF, or performing LMF selection, etc.

[0094] For example, if the SF and LMF are co-located, an additional interface can be added between the LMF and GMLC to transmit information related to awareness services, such as adding an NL9 interface. Additionally, interfaces related to the LMF and GMLC (such as one or more of the following: NL1 interface between AMF and LMF, NL2 interface between AMF and GMLC, NL5 interface between NEF and GMLC, or NL6 interface between UDM and GMLC) can also support the transmission of information related to awareness services, as detailed below.

[0095] N33: The interface between AF and NEF, through which information such as the type of sensing business, business requirements, and sensing results can be transmitted.

[0096] NL5: The interface between NEF and GMLC, through which information such as the type of sensing business, business requirements, and sensing results can be transmitted.

[0097] NL6: The interface between GMLC and UDM, through which privacy inspection data can be transferred.

[0098] NL2: The interface between NEF and AMF, through which information such as the perceived business type, business requirements, and perceived results can be transmitted.

[0099] NL1: The interface between AMF and LMF, through which information such as perceived business type, business requirements, and perceived results can be transmitted.

[0100] NL9: A new interface between GMLC and LMF, through which information such as the type of sensing business, business requirements, and sensing results can be transmitted.

[0101] Referring again to Figure 5, which is a schematic diagram of another potential sensing network architecture based on 5GC, the network architecture shown in Figure 5 can also be another application scenario of the embodiments of this application.

[0102] In the network architecture shown in Figure 5, the SF (Sensitive Detection) is relatively independent of the existing core network elements. The SF does not need to interact with the core network elements, or only needs to perform minimal interaction. For scenarios where there is only a sensing requirement within a specific area, or scenarios where there is only a sensing requirement, this network architecture can provide sensing services without requiring 5GC control or only requiring some network elements to participate in control. Furthermore, by deploying the SF locally, sensing measurement data or results can remain within the campus, thus meeting the enterprise's requirements for the security and privacy of sensing measurement data or results, and reducing sensing latency. This network architecture is relatively simple, flexible, efficient, has few transmission nodes, and is easy to deploy. Optionally, this network architecture can support UE-related sensing requirements, and implementation schemes for functions such as authorization, mobility management, and billing can be considered as needed.

[0103] In this network architecture, the SF can directly establish a connection with the RAN node. Control plane sensing signaling and user plane sensing measurement data can be transmitted via the newly defined interface NS1. When the UE participates in sensing, control plane signaling can be forwarded to the SF via the AMF, and sensing measurement data can be transmitted via NS1. Furthermore, there can also be an interface between the SF and 5GC network elements (such as AMF, NEF, or NWDAF) to control the AF to provide sensing service requirements to the SF through core network functions. The interface between the SF and 5GC network elements is described below.

[0104] NS1: A new interface between the SF and (R)AN, which can transmit sensing control signaling or sensing measurement data. In one implementation, the SF can also be deployed on the RAN side; for example, the SF can be co-located with access network equipment (e.g., a base station), or the SF can be a standalone device within the access network.

[0105] NS2: A new interface that may be added between SF and AMF. This interface can receive awareness service requirements from UE, or transmit signaling between SF and other network elements in the core network, such as transmitting interaction messages between SF and UDM.

[0106] NS3: A potential new interface between SF and NEF. This interface can transmit signaling between SF and the service-side AF via NEF, and can also expose the sensing results to the AF. The interaction between SF and AF may not go through NEF. In actual deployment, NS2 and NS3 may be chosen as one of the two options. That is, the AF can send sensing service requests indirectly to SF or directly to SF (without NEF) via NS2 (NEF); or, the AF can send sensing service requests to SF via N33 (NEF) and NS2 (AMF).

[0107] NS4: A potential new interface between SF and NWDAF, through which SF and NWDAF can jointly perform intelligent analysis and prediction to generate perception results.

[0108] The technical solutions provided in this application can be applied to fourth-generation (4G) mobile communication systems, such as LTE systems, or to 5G systems, such as NR systems, or to next-generation mobile communication systems or other similar communication systems, such as 6G systems, or to existing satellite mobile communication technology systems. No specific limitations are imposed. For example, Figures 4 and 5 are based on 5GC. In addition, SF can also be deployed in other networks, such as 6G networks, or other future communication networks.

[0109] The embodiments of this application can be applied to the scenarios shown in Figure 2B, Figure 4 or Figure 5, or can also be used in other scenarios, such as any scenario involving sensing services.

[0110] The method provided in the embodiments of this application is described below with reference to the accompanying drawings. In various embodiments of this application, the signal used to implement the sensing function or sensing service is referred to as a sensing signal. The sensing signal is transmitted through reflection, scattering, or diffraction, and the sensing device (e.g., a network device) can determine relevant characteristics of the sensing target based on the received sensing signal. For example, it can estimate time delay, Doppler, or angular spectrum information based on the received sensing signal to determine information such as the distance, angle, or velocity of the sensing target. Additionally, the network device can also send measurement results to the sensing network element, such as point cloud information, distance, angle, or velocity information of the sensing target. In the accompanying drawings corresponding to the various embodiments of this application, steps indicated by dashed lines are optional steps.

[0111] The various embodiments described herein can be applied to the network architectures shown in Figures 2B, 4, or 5. For example, the UE described in the various embodiments of this document can be device 2 shown in Figure 2B, and the network device described in the various embodiments of this document can be device 3 shown in Figure 2B. As another example, the UE described in the various embodiments of this document can be the UE shown in Figure 4 or 5; and the network device described in the various embodiments of this document can be the (R)AN shown in Figure 4 or 5.

[0112] This application provides a first sensing method, please refer to Figure 6, which is a flowchart of the method.

[0113] S601, The network device sends the first indication information. Correspondingly, the UE receives the first indication information.

[0114] The network device can be either a non-ORAN architecture or an ORAN architecture. If the network device is an ORAN architecture network device, for example, if the network device includes an RU, or if the network device is an RU, then S601 can be executed by the RU.

[0115] The first indication information may indicate the suppression of a reflection path corresponding to a first beam, or the suppression of a signal on a reflection path corresponding to a first beam, or the suppression of a signal on a reflection path corresponding to an uplink reference signal resource. The first beam may be, for example, a beam whose reflection path needs to be suppressed, or a beam with a reflection path. For example, the first beam includes at least one beam, which may be all or part of the beam with a reflection path. The at least one beam may be an uplink transmission beam of the UE.

[0116] Alternatively, the first indication information may also indicate that the second beam is not suppressed, or that the signal on the second beam is not suppressed. The second beam may be, for example, a beam that does not require suppression of reflection paths, or a beam that does not have reflection paths. For example, the second beam may include one or more beams, which may be some or all of the beams that do not require suppression of reflection paths, or all or part of the beams that do not have reflection paths. The one or more beams may be the UE's uplink transmission beam.

[0117] If the first indication information indicates suppression of the reflection path corresponding to the first beam, then the UE can suppress the reflection path corresponding to the first beam and not suppress the signal on the second beam according to the first indication information. Alternatively, if the first indication information indicates not to suppress the second beam, then the UE can not suppress the signal on the second beam and suppress the reflection path corresponding to the first beam according to the first indication information. It can be understood that regardless of the indication method used in the first indication information, the UE's execution method is the same or similar. The following text uses the example of the first indication information indicating suppression of the reflection path corresponding to the first beam.

[0118] Taking the first indication information indicating the suppression of reflection paths as an example. Optionally, the first indication information can be a single piece of information that generally indicates the suppression of the reflection path corresponding to at least one beam; or, the first indication information can include at least one sub-indication information, with each of the at least one beam corresponding to one of the at least one sub-indication information, wherein each sub-indication information indicates the suppression of the reflection path of the corresponding beam.

[0119] The reflection path can be the transmission path of a signal reflected from a sensing target. For example, the reflection path can be the transmission path of a signal from a network device reflected from a sensing target to the UE, or the reflection path can be the transmission path of a signal from the UE reflected from a sensing target to the network device. This uplink reference signal resource can be used to configure uplink reference signals. Uplink reference signals may include, for example, a channel sounding reference signal (SRS), or other uplink reference signals. Taking SRS as an example, the uplink reference signal resource is, for example, an SRS resource.

[0120] For network devices, sensing can be performed using signals from either reflection paths or scattering paths. For example, a beam with a reflection path can correspond to one reflection path, and the network device can determine a point on the target based on the signal from that reflection path. Alternatively, the beam can correspond to one or more scattering paths, and the network device can determine one or more points on the target based on the signals from those paths. The network device can send the information of the determined points (e.g., the coordinates of the points) to the sensing network element, which can then perform sensing operations, such as reconstructing the target. Since the network device can determine a large number of points based on scattering paths, it can obtain more information for sensing; therefore, signals from scattering paths are particularly important for sensing. However, signals on reflection paths generally have higher power, which may interfere with signals on scattering paths. For example, when processing signals from reflection and scattering paths, the sidelobe peak value of the signal on the reflection path may be higher, causing the network device to mistakenly identify the sidelobe as the main lobe of the scattering path. This leads to incorrect estimation of the signal from the scattering path, ultimately affecting the sensing accuracy. Therefore, this application embodiment believes that if a reflection path exists on a beam, the reflection path can be suppressed, thereby reducing the interference of the signal on the reflection path on the signal on the scattering path.

[0121] Optionally, the first indication information may be included in the first configuration information, which can be used to configure uplink reference signal resources. The uplink reference signal resource, for example, corresponds to at least one beam included in the first beam. Optionally, the first configuration information may include at least one sub-configuration information, which corresponds to at least one uplink reference signal resource, and each sub-configuration information can configure the corresponding uplink reference signal resource. The at least one uplink reference signal resource can correspond one-to-one with the at least one beam. For example, if the at least one beam includes beam 1, the first configuration information can configure the uplink reference signal resource corresponding to beam 1. The correspondence between one beam and one uplink reference signal resource can be understood as the uplink reference signal corresponding to that uplink reference signal resource being transmitted through that beam. For example, the first indication information is a piece of information, which can be included in any of the sub-configuration information included in the first configuration information. As another example, if the first indication information includes at least one sub-indication information, then the at least one sub-indication information can correspond one-to-one with at least one uplink reference signal resource, and each sub-indication information can be included in the sub-configuration information used to configure the corresponding uplink reference signal resource.

[0122] Alternatively, the first indication information may not be included in the first configuration information, but may be included in other information or sent separately. If the first indication information is not included in the first configuration information, optionally, the network device may send first configuration information excluding the first indication information to the UE to configure the uplink reference signal resource. Wherein, if the network device is a network device under an ORAN architecture, for example, if the network device includes an RU, then the first configuration information may be sent by the RU included in the network device; or, the network device is an RU.

[0123] Optionally, the first indication information may also be called a reflection indication (r18), or it may have other names.

[0124] S602. The UE transmits a suppressed uplink reference signal on the reflection path corresponding to the first beam. Correspondingly, the network device receives the suppressed uplink reference signal on the reflection path corresponding to the first beam.

[0125] If the network device is a network device under the ORAN architecture, such as the network device including a RU, or the network device being a RU, then S602 can be executed by the RU.

[0126] The UE can transmit an uplink reference signal on the reflection paths corresponding to some or all of the at least one beam included in the first beam. The uplink reference signal transmitted by the UE on these reflection paths can be a suppressed uplink reference signal. The network device can receive the suppressed uplink reference signal on the reflection paths corresponding to some or all of the at least one beam. Optionally, if the network device has configured uplink reference signal resources for the UE, the UE can transmit the suppressed uplink reference signal in S602 according to these resources. The network device can receive the suppressed uplink reference signal in S602 according to these resources.

[0127] Optionally, the UE may also transmit an uplink reference signal on the scattering paths corresponding to some or all of the at least one beam included in the first beam. The uplink reference signal transmitted by the UE on these scattering paths may be an unsuppressed uplink reference signal. The network device may receive the unsuppressed uplink reference signal on the scattering paths corresponding to some or all of the at least one beam. Optionally, if the network device has configured uplink reference signal resources for the UE, the UE may transmit the unsuppressed uplink reference signal according to these resources. The network device may receive the unsuppressed uplink reference signal according to these resources.

[0128] Optionally, the uplink reference signal transmitted by the UE on the reflection path of the first beam can be precoded according to the first indication information. Beamforming in this embodiment can be done at the transmission path granularity. For example, the reflection path of the first beam can correspond to a precoding matrix (wherein, the first beam may include at least one beam, each beam may correspond to a reflection path, and the reflection path of each beam may correspond to a precoding matrix; or, all reflection paths of the at least one beam may uniformly correspond to a precoding matrix), and the precoding matrix corresponding to the reflection path of the first beam can be determined according to the first indication information. For example, precoding the uplink reference signal on the reflection path using the precoding matrix corresponding to the reflection path of the first beam is equivalent to beamforming the uplink reference signal on the reflection path (e.g., digital beamforming (DBF), analog beamforming, or hybrid beamforming, etc.). This beamforming can reduce the transmission power of the uplink reference signal, thereby effectively suppressing the signal on the reflection path corresponding to the first beam.

[0129] Optionally, the uplink reference signal transmitted by the UE on the scattering path of the first beam can also be precoded according to the first indication information, and / or, the uplink reference signal transmitted by the UE on a beam without a reflection path can be precoded according to the first indication information. For example, each scattering path of the first beam can correspond to a precoding matrix (wherein, the first beam may include at least one beam, each of which may correspond to at least one scattering path, each of the at least one scattering path may have a precoding matrix, or the at least one scattering path may uniformly correspond to a precoding matrix, or all scattering paths of the at least one beam may uniformly correspond to a precoding matrix), and the precoding matrix corresponding to the first beam can be determined according to the first indication information. For example, precoding the uplink reference signal on the scattering path corresponding to the first beam using the precoding matrix corresponding to the first beam is equivalent to performing beamforming (e.g., DBF) on the uplink reference signal on the reflection path. This beamforming can improve the transmission power of the uplink reference signal, thereby improving the signal-to-noise ratio of the signal on the scattering path.

[0130] By reducing the transmission power of signals on the reflection path and increasing the transmission power of signals on the scattering path and / or beams without reflection paths, the total transmission power of the UE can remain constant. Therefore, the UE can determine the transmission power using traditional methods without introducing additional power calculations.

[0131] Optionally, after receiving the uplink reference signal, the network device can perform sensing based on the uplink reference signal. For example, the network device can obtain sensing results by measuring the uplink reference signal. The sensing results may include one or more parameters, such as the velocity, position, distance, and point cloud information of the sensed target. Optionally, the network device can also send the sensing results to the SF, enabling the SF to further perform sensing. For example, the SF can reconstruct the sensed target based on the sensing results. Wherein, if the network device is a network device under the ORAN architecture, such as the network device including a CU, or the network device being a CU, then the CU can perform sensing, and the CU can also send sensing results to the SF.

[0132] Optionally, the first beam can be determined by the UE and communicated to the network device, or it can be determined by the network device itself. The following describes the process of the UE determining the first beam, using the example of the UE determining the first beam. This process may include steps S603 to S605. Since the UE determining the first beam is an optional solution, steps S603 to S605 are optional. Optionally, steps S603 to S605 can occur before step S601.

[0133] S603. The network device transmits downlink reference signals in K1 beams. Correspondingly, the UE can receive these downlink reference signals in K2 beams. S603 can occur before S601. The K1 beams can be the downlink transmission beams of the network device. K1 is a positive integer. The K2 beams can be the downlink reception beams of the UE. K2 is a positive integer. If the network device is an ORAN architecture network device, for example, if the network device includes an RU, or if the network device is an RU, then S603 can be executed by the RU.

[0134] The network device can transmit one or more downlink reference signals in each of the K1 beams; the UE can receive these one or more downlink reference signals in each of the K2 beams. The downlink reference signals transmitted by the network device may include, for example, channel state information reference signals (CSI-RS) and / or synchronization signals and physical broadcast channel (PBCH) blocks (SSBs).

[0135] Optionally, the downlink receive beam of the UE and the downlink transmit beam of the network device can be in one-to-one correspondence. Therefore, K1 beams and K2 beams can be in one-to-one correspondence, for example, K1 = K2. Optionally, the K2 beams can be narrow beams, for example, to make the energy of the received signal more concentrated.

[0136] Referring to Figure 7, an example of a communication path between a network device and a UE is shown. For instance, the network device transmits a downlink reference signal through K1 beams, which may include beams 1, 2, 3, and 4 in Figure 7. The UE receives the downlink reference signal through K2 beams, which may include beams a, b, c, and d in Figure 7. Beam 1 corresponds to beam a, beam 2 to beam b, beam 3 to beam c, and beam 4 to beam d. For any one of beams 1, 2, 3, 4, a, b, c, or d, there may be one or more scattering paths, and optionally, there may also be a reflection path.

[0137] S604. Based on the measurement results of the downlink reference signal, the UE determines that a reflection path exists in the first beam. The downlink reference signal may include all or part of the downlink reference signals received by the UE in the K2 beams.

[0138] For example, the UE can determine that one or more of the K2 beams have reflection paths. Furthermore, the UE's downlink receive beams and uplink transmit beams can have a one-to-one correspondence; for example, downlink receive beams and uplink transmit beams can have a one-to-one correspondence. Therefore, if the UE determines that one or more of the K2 beams have reflection paths, it can also assume that the uplink receive beams corresponding to the K2 beams have reflection paths. Taking the one-to-one correspondence between downlink receive beams and uplink transmit beams as an example, the number of uplink transmit beams corresponding to the K2 downlink receive beams is also K2. The uplink receive beam corresponding to the beam with a reflection path among the K2 downlink receive beams is, for example, the first beam. Optionally, the beams with reflection paths among the K2 beams (unless otherwise specified, "K2 beams" in this document generally refers to the K2 downlink receive beams) can have a one-to-one correspondence with the beams included in the first beam; for example, the number of beams included in the first beam is equal to the number of beams with reflection paths among the K2 beams.

[0139] The UE can measure the downlink reference signal received in each of the K2 beams to obtain measurement results. For example, these measurement results include the power delay profile (PDP) of the channel corresponding to the downlink reference signal. The measurement result for one beam can reflect whether a reflection path exists on that beam. For instance, the UE can determine whether a reflection path exists on a beam based on the measurement result of one beam. If the UE measures the downlink reference signal in multiple beams, it can determine whether a reflection path exists in each beam based on the measurement results of each of those multiple beams. The UE's processing for each beam can be similar; therefore, the following uses beam 1, which is included in the first beam, as an example to illustrate how the UE determines whether a reflection path exists in the downlink receiving beam corresponding to beam 1. The downlink receiving beam corresponding to beam 1 is called beam 2, and beam 2 belongs to the K2 beams. Whether a reflection path exists in beam 2 can also be understood as equivalent to whether a reflection path exists in beam 1. That is, if a reflection path exists in beam 2, it indicates that a reflection path exists in beam 1; if a reflection path does not exist in beam 2, it indicates that a reflection path does not exist in beam 1. Optionally, the reflection path corresponding to beam 2 can be the same as the reflection path corresponding to beam 1, only the signal transmission and reception directions are different.

[0140] As an optional implementation for the UE to determine whether a reflection path exists on beam 2, if the measurement result of the downlink reference signal from beam 2 indicates that the received power of the downlink reference signal is greater than or equal to a first threshold, it indicates that a reflection path exists on beam 2; or, if the measurement result of the downlink reference signal from beam 2 indicates that the received power of the downlink reference signal is less than the first threshold, it indicates that a reflection path does not exist on beam 2. Generally, the received power corresponding to a reflection path is higher, and the received power corresponding to a scattering path is lower. If there is no reflection path on beam 2 (for example, beam 2 only has a scattering path, or there is no downlink reference signal on beam 2), the received power of beam 2 may not reach the first threshold. Therefore, the existence of a reflection path on beam 2 can be determined by the first threshold.

[0141] Optionally, the first threshold can be predefined by the protocol, set by the UE, or configured by the network device. For example, the first threshold can be set according to the channel's PDP. For instance, the first threshold can be determined based on the link budget, such as by obtaining one or more parameters including the configured transmit power, signal frequency, wavelength, path loss, and transmission distance, to obtain the signal-to-noise ratio (SNR) or signal-to-interference-plus-noise ratio (SINR), or the received signal power. The first threshold can be set based on this SNR or SINR. Optionally, the first threshold can be the same or different for different sensing targets or different types of sensing targets. For example, different sensing targets such as drones, buildings, bridges, and cars can each correspond to their own first threshold, where the first thresholds for different sensing targets can be the same or different.

[0142] Alternatively, as another optional implementation for the UE to determine whether a reflection path exists on beam 2, if the measurement result of the downlink reference signal from beam 2 indicates that the signal-to-noise ratio (SNR) of the downlink reference signal is greater than or equal to a second threshold, then a reflection path exists on beam 2; or, if the measurement result of the downlink reference signal from beam 2 indicates that the SNR of the downlink reference signal is less than the second threshold, then a reflection path does not exist on beam 2. If a reflection path does not exist on beam 2 (e.g., beam 2 only has a scattering path, or there is no downlink reference signal on the second beam), then the SNR of beam 2 may not reach the second threshold. Therefore, the existence of a reflection path on beam 2 can be determined by the second threshold. This SNR can be, for example, SNR or SINR. The configuration of the second threshold can be similar to that of the first threshold; for this, refer to the description of the configuration of the first threshold.

[0143] Alternatively, as another optional implementation for the UE to determine whether a reflection path exists on beam 2, if the measurement results of the downlink reference signal from beam 2 indicate that the ratio of the peak power of the first path to the peak power of the second path is greater than or equal to a third threshold, then a reflection path exists on beam 2; or, if the measurement results of the downlink reference signal from beam 2 indicate that the ratio of the peak power of the first path to the peak power of the second path is less than the third threshold, then no reflection path exists on beam 2. Here, the first path is the transmission path with the highest received power corresponding to beam 2 (e.g., also called the strongest transmission path corresponding to beam 2), and the second path is any transmission path corresponding to beam 2 other than the transmission path with the highest received power. Optionally, the second path is the transmission path corresponding to beam 2 with the second highest received power. Here, "second highest received power" means that, in descending order, the received power is the second highest. Therefore, such a second path can also be called the second strongest transmission path corresponding to beam 2. Generally, the received power corresponding to a reflection path will be much greater than the received power corresponding to a scattering path. Therefore, if beam 2 has a reflection path, the received power corresponding to that reflection path should be the maximum received power of beam 2. However, the received power of all other scattering paths corresponding to beam 2 will be much lower than that of the reflection path. Therefore, the peak power of the strongest and second strongest transmission paths corresponding to beam 2 can be compared. If the ratio is large, it indicates a significant difference in received power between the strongest and second strongest transmission paths, suggesting that the strongest transmission path corresponds to a reflection path.

[0144] In addition to the methods mentioned above, the UE can also use other methods to determine whether beam 2 has a reflection path, and there are no restrictions on this.

[0145] S605, the UE sends reflection path information. The UE may send this reflection path information to the network device and / or the SF. Correspondingly, the network device and / or the SF receives the reflection path information. Figure 6 shows an example of the UE sending the reflection path information to the network device. If the network device is an ORAN architecture network device, for example, if the network device includes an RU, or if the network device is an RU, then the RU can receive the reflection path information from the UE.

[0146] If the UE receives downlink reference signals from K2 downlink receive beams, then the UE can determine whether there are reflection paths in these K2 downlink receive beams. This can also be interpreted as the UE determining whether there are reflection paths in the uplink transmit beams (e.g., K2 uplink transmit beams) corresponding to these K2 downlink receive beams. The reflection path information reported by the UE in S605 can include information on reflection paths corresponding to some or all of the downlink receive beams determined by the UE, or it can be considered to include information on reflection paths corresponding to some or all of the uplink transmit beams determined by the UE. For example, if the UE determines that K3 out of the K2 uplink transmit beams have reflection paths, where K3 is a positive integer less than or equal to K2, the UE can report information on the reflection paths corresponding to at least one of the K3 uplink transmit beams. This at least one uplink transmit beam can be some or all of the K3 uplink transmit beams.

[0147] Optionally, the information about the reflection path may include information about the beam corresponding to the reflection path. Optionally, the beam indicated by the reflection path information may be, for example, the UE's uplink transmit beam or the UE's downlink receive beam. One beam may have one reflection path; for example, if the UE determines that a first beam has a reflection path, the UE can report the information of the first beam. Optionally, the information about the reflection path may also include the number of reflection paths. Taking one beam corresponding to one reflection path as an example, the number of reflection paths reported by the UE can be equal to the number of beams reported by the UE. For example, if the UE reports the information of the first beam and the number of reflection paths, the number of reflection paths can be equal to the number of beams included in the first beam.

[0148] Optionally, the information for any one of the at least one beams may include the beam's identifier and / or the beam's corresponding angle of arrival. Optionally, the beam's corresponding angle of arrival may include, for example, the beam's corresponding horizontal angle of arrival (AoA) and / or vertical angle of arrival (ZoA).

[0149] Through steps S603-S605, the UE transmits reflection path information. If the UE transmits the reflection path information to the SF (Site Provider), the SF can send a first request message to the network device, which in turn can receive the first request message. The first request message requests the network device to instruct the UE to suppress the reflection path. Optionally, the first request message may include information about the beam to be suppressed. The first request message may also be called a sensing request message or a sensing measurement request message, etc., and the name is not limited. The network device can send first indication information to the UE based on the reflection path information or the first request message. For example, for some or all of the beams indicated by the reflection path information or the first request message, the network device can instruct the UE to suppress the reflection path of that part or all of the beams using the first indication information. If the network device is an ORAN architecture network device, such as a CU (Core Controller), or if the network device is a CU, then the CU can receive the first request message.

[0150] Optionally, the UE may periodically send reflection path information to the network device and / or SF, or it may send reflection path information to the network device after receiving a request from the network device. For example, the network device and / or SF may send first information, which can be used to request reflection path information, or to request the UE to report reflection path information, or to obtain reflection path information. After receiving the first information, the UE may execute S603 to S605. For example, the first information may also be called a sensing measurement request or a sensing request, or the first information may be included in a sensing measurement request or a sensing request.

[0151] In this embodiment, the UE can reduce the transmission power on the reflection path, thereby reducing the influence of the signal on the reflection path on the scattering path and improving the sensing accuracy.

[0152] Please refer to Figure 8, which illustrates another sensing method provided in an embodiment of this application. Figure 8 can be considered an example of the embodiment shown in Figure 6; therefore, each step in this embodiment can be regarded as an example, and the steps are no longer represented by dashed lines in Figure 8.

[0153] S801, the UE interacts with network devices and SF to exchange the UE's capability information.

[0154] For example, the UE can send its capability information to the network device and / or to the SF. This capability information can indicate the UE's sensing capabilities, such as whether the UE supports the ability to suppress reflection paths. The SF can also be replaced by the LMF, for example, the SF and LMF may be co-located, or the LMF may have sensing capabilities. This application uses the SF as an example.

[0155] The UE and the network may not need to exchange the UE's capability information. For example, network devices and / or SF can obtain the UE's capability information through other means. Therefore, S801 is an optional step.

[0156] S802 and SF send a second request message to the network device. Correspondingly, the network device receives the second request message.

[0157] The second request message can be used to request awareness-related configuration information. Specifically, if the network device is an ORAN architecture network device, for example, if the network device includes a CU, or if the network device is a CU, then the CU can receive the second request message.

[0158] S803. The network device sends the second information to the SF. Correspondingly, the SF receives the second information. Wherein, if the network device is a network device under the ORAN architecture, for example, the network device includes a CU, or the network device is a CU, then the second information can be sent by the CU.

[0159] The second information may include sensing-related configuration information. For example, the second information may include one or more of the following: configuration information of the downlink reference signal, beam information corresponding to the downlink reference signal, or location information of the network device.

[0160] S804. The network device sends the first information to the UE. Correspondingly, the UE receives the first information.

[0161] The first information may request information about the reflection path, or request the UE to report information about the reflection path. Optionally, the first information may also include one or more of a second threshold, a third threshold, or a fourth threshold. For a description of these thresholds, please refer to the embodiment shown in Figure 6.

[0162] The first information can be the same as the first information in the embodiment shown in Figure 6.

[0163] S805. The network device transmits downlink reference signals in K1 beams. Correspondingly, the UE can receive these downlink reference signals in K1 beams.

[0164] For more information on S805, please refer to S603 in the embodiment shown in Figure 6.

[0165] S806. Based on the measurement results of the downlink reference signal, the UE determines that the first beam has a reflection path.

[0166] For more information on S806, please refer to S604 in the embodiment shown in Figure 6.

[0167] S807, the UE sends the reflection path information. The UE can send this reflection path information to the network device and / or the SF. Correspondingly, the network device and / or the SF receives the reflection path information. Figure 8 shows an example of the UE sending the reflection path information to the SF.

[0168] For more information on S807, please refer to S605 in the embodiment shown in Figure 6.

[0169] S808 and SF send a first request message to the network device. Correspondingly, the network device receives the first request message.

[0170] The first request message may request the network device to configure an uplink reference signal for the UE. This uplink reference signal may be, for example, an SRS, or other uplink reference signals. Optionally, the first request message may also request the network device to instruct the UE to suppress reflection paths. Optionally, the first request message may include information about the beam to be suppressed. The first request message may also be referred to as a sensing request message or a sensing measurement request message, etc., and the name is not limited.

[0171] Optionally, the first request message may include second configuration information, which can be used to configure the uplink reference signal. The second configuration information may be, for example, uplink reference signal configuration information recommended by the SF. For instance, the core network equipment may determine the second configuration information based on one or more factors, such as the UE's capability information, the needs of sensed services, or the resource usage of some or all UEs served by the SF.

[0172] S809. The network device sends a first indication message to the UE. Correspondingly, the UE receives the first indication message.

[0173] For more information on S809, please refer to S601 in the embodiment shown in Figure 6.

[0174] S810, the UE transmits a suppressed uplink reference signal on the reflection path corresponding to the first beam. Correspondingly, the network device receives the suppressed uplink reference signal on the reflection path corresponding to the first beam.

[0175] For more information on S810, please refer to S602 in the embodiment shown in Figure 6.

[0176] Optionally, after receiving the uplink reference signal, the network device can perform sensing based on the uplink reference signal. For example, the network device can obtain sensing results by measuring the uplink reference signal, and the sensing results may include one or more parameters, such as the speed, position, and distance of the sensed target. Optionally, the network device can also send the sensing results to the SF, enabling the SF to further perform sensing. For example, the SF can reconstruct the sensed target based on the sensing results.

[0177] In this embodiment, the UE can reduce the transmission power on the reflection path, thereby reducing the influence of the signal on the reflection path on the scattering path and improving the sensing accuracy.

[0178] Figure 9 shows a schematic diagram of a device provided in an embodiment of this application. The device 900 can be a UE or its circuit system as shown in any of the embodiments shown in Figures 6 or 8, used to implement the method corresponding to the UE in the above method embodiments. Alternatively, the device 900 can be a network device or its circuit system as shown in any of the embodiments shown in Figures 6 or 8, used to implement the method corresponding to the network device in the above method embodiments. For example, one type of circuit system is a chip system.

[0179] The device 900 includes at least one processor 901. The processor 901 can be used for internal processing within the device to implement certain control processing functions. Optionally, the processor 901 includes instructions. Optionally, the processor 901 can store data. Optionally, different processors can be independent devices, located in different physical locations, or located on different integrated circuits. Optionally, different processors can be integrated into one or more processors, for example, integrated on one or more integrated circuits.

[0180] Optionally, the device 900 includes one or more memories 903 for storing instructions. Optionally, the memories 903 may also store data. The processor and the memories may be separate or integrated together.

[0181] Optionally, the device 900 includes a communication line 902 and at least one communication interface 904. Since the memory 903, communication line 902, and communication interface 904 are all optional, they are all represented by dashed lines in FIG9.

[0182] Optionally, device 900 may further include a transceiver and / or an antenna. The transceiver can be used to send information to or receive information from other devices. The transceiver may be referred to as a transceiver unit, transceiver circuit, input / output interface, etc., and is used to realize the transmission and reception functions of device 900 via the antenna. Optionally, the transceiver includes a transmitter and a receiver. For example, the transmitter can be used to generate a radio frequency (RF) signal from a baseband signal, and the receiver can be used to convert the RF signal back into a baseband signal.

[0183] The processor 901 may include a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs according to the present application.

[0184] Communication line 902 may include a path for transmitting information between the aforementioned components.

[0185] Communication interface 904 uses any transceiver-like device for communicating with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area network (WLAN), wired access network, etc.

[0186] Memory 903 may be a read-only memory (ROM) or other type of static storage device capable of storing static information and instructions, random access memory (RAM) or other type of dynamic storage device capable of storing information and instructions, or electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical discs, laser discs, optical discs, digital universal optical discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium capable of carrying or storing desired program code in the form of instructions or data structures and accessible by a computer, but not limited thereto. Memory 903 may exist independently and be connected to processor 901 via communication line 902. Alternatively, memory 903 may be integrated with processor 901.

[0187] The memory 903 stores computer execution instructions for implementing the present application's solution, and its execution is controlled by the processor 901. The processor 901 executes the computer execution instructions stored in the memory 903, thereby implementing the steps performed by the UE or network device in the embodiment shown in either FIG. 6 or FIG. 8.

[0188] Optionally, the computer execution instructions in the embodiments of this application may also be referred to as application code, and the embodiments of this application do not specifically limit this.

[0189] In a specific implementation, as one example, processor 901 may include one or more CPUs, such as CPU0 and CPU1 in FIG9.

[0190] In a specific implementation, as one embodiment, device 900 may include multiple processors, such as processor 901 and processor 905 in FIG. 9. Each of these processors may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. Here, a processor may refer to one or more devices, circuits, and / or processing cores for processing data (e.g., computer program instructions).

[0191] When the device shown in Figure 9 is a chip, such as a UE chip or a network device chip, the chip includes a processor 901 (and may also include a processor 905), a communication line 902, and a communication interface 904. Optionally, it may include a memory 903. Specifically, the communication interface 904 may be an input interface, pins, or circuits, etc. The memory 903 may be a register, cache, etc. The processor 901 and processor 905 may be a general-purpose CPU, microprocessor, ASIC, or one or more integrated circuits for controlling the execution of a program that controls the sensing method of any of the above embodiments.

[0192] This application embodiment can divide the device into functional modules according to the above method embodiments. For example, each function can be divided into a separate functional module, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or software. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. For example, when dividing each functional module according to each function, Figure 10 is a schematic diagram of a device. The device 1000 can be the UE or network device involved in the above method embodiments, or a chip in the UE or a chip in the network device. The device 1000 includes a processing unit 1002 and a transceiver unit 1001.

[0193] It should be understood that the device 1000 can be used to implement the steps performed by the UE or network device in the sensing method of the embodiments of this application. The relevant features can be referred to the embodiments shown in either Figure 6 or Figure 8 above, and will not be repeated here.

[0194] Optionally, the functions / implementation processes of the transceiver unit 1001 and processing unit 1002 in Figure 10 can be implemented by the processor 901 in Figure 9 calling computer execution instructions stored in memory 903. Alternatively, the functions / implementation processes of the processing unit 1002 in Figure 10 can be implemented by the processor 901 in Figure 9 calling computer execution instructions stored in memory 903, and the functions / implementation processes of the transceiver unit 1001 in Figure 10 can be implemented by the communication interface 904 in Figure 9.

[0195] Optionally, when the device 1000 is a chip or circuit, the function / implementation process of the transceiver unit 1001 can also be implemented through pins or circuits, etc. Optionally, the transceiver unit 1001 may include a transmitting unit and / or a receiving unit, whereby the transmitting unit implements the transmitting function and the receiving unit implements the receiving function; or, the transceiver unit 1001 may be an integral module capable of implementing both transmitting and / or receiving functions. Optionally, the transceiver unit 1001 can be implemented using a transceiver.

[0196] This application also provides a computer-readable storage medium storing a computer program or instructions that, when executed, implement the methods performed by the UE or network device in the aforementioned method embodiments. Thus, the functions described in the above embodiments can be implemented as software functional units and sold or used as independent products. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to it, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0197] This application also provides a computer program product comprising: computer program code, which, when run on a computer, causes the computer to perform the method executed by the UE or network device in any of the foregoing method embodiments.

[0198] This application also provides a processing apparatus, including a processor and an interface; the processor is used to execute the methods performed by the UE or network device involved in any of the above method embodiments.

[0199] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that integrates one or more available media. The available medium can be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., solid-state disk (SSD)).

[0200] The various illustrative logic units and circuits described in the embodiments of this application can be implemented or operate the described functions using a general-purpose processor, digital signal processor (DSP), ASIC, field-programmable gate array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. The general-purpose processor can be a microprocessor; alternatively, it can be any conventional processor, controller, microcontroller, or state machine. The processor can also be implemented using a combination of computing devices, such as a digital signal processor and a microprocessor, multiple microprocessors, one or more microprocessors combined with a digital signal processor core, or any other similar configuration.

[0201] The steps of the methods or algorithms described in the embodiments of this application can be directly embedded in hardware, software units executed by a processor, or a combination of both. The software units can be stored in RAM, flash memory, ROM, erasable programmable read-only memory (EPROM), EEPROM, registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium in the art. Exemplarily, the storage medium can be connected to the processor so that the processor can read information from the storage medium and write information to the storage medium. Optionally, the storage medium can also be integrated into the processor. The processor and storage medium can be disposed in an ASIC, which can be disposed in the terminal device. Optionally, the processor and storage medium can also be disposed in different components of the terminal device.

[0202] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, such that the instructions, which execute on the computer or other programmable apparatus, provide steps for implementing the functions specified in one or more flowcharts and / or one or more block diagrams.

[0203] The contents of the various embodiments of this application can be referenced to each other. Unless otherwise specified or there is a logical conflict, the terms and / or descriptions between different embodiments are consistent and can be referenced to each other. The technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0204] It is understood that in the embodiments of this application, the UE and / or network device may perform some or all of the steps in the embodiments of this application. These steps or operations are merely examples. In the embodiments of this application, other operations or variations of various operations may also be performed. Furthermore, the steps may be performed in different orders as presented in the embodiments of this application, and it is not necessary to perform all the operations in the embodiments of this application.

Claims

1. A perception method, comprising: The method comprises: receiving first indication information, the first indication information being used to indicate suppression of signals on a reflection path corresponding to a first beam, the reflection path being a transmission path of signals reflected by a sensing target; transmitting, according to the first indication information, suppressed uplink reference signals on the reflection path corresponding to the first beam.

2. The method of claim 1, wherein, The method further comprises: transmitting, on a scattering path corresponding to the first beam, unsuppressed uplink reference signals, the scattering path being a transmission path of signals scattered by the sensing target.

3. The method of claim 1, wherein, The suppressed uplink reference signals are beamformed according to the first indication information, and the beamforming is used to reduce the transmission power of the uplink reference signals on the reflection path corresponding to the first beam.

4. The method according to any one of claims 1 to 3, characterized in that, The first indication information is included in first configuration information, the first configuration information being used to configure uplink reference signal resources corresponding to the first beam, and wherein transmitting the suppressed uplink reference signals on the reflection path corresponding to the first beam comprises: transmitting, on the reflection path corresponding to the first beam, the suppressed uplink reference signals according to the uplink reference signal resources.

5. The method according to any one of claims 1 to 4, characterized in that, Before receiving the first indication information, the method further comprises: receiving, by the first beam, downlink reference signals; determining, according to a measurement result of the downlink reference signals, that the reflection path exists for the first beam; and transmitting information of the reflection path.

6. The method of claim 5, wherein, Determining, according to the measurement result of the downlink reference signals, that the reflection path exists for the first beam comprises: determining, according to the measurement result, that the received power of the downlink reference signals is greater than or equal to a first threshold value; or determining, according to the measurement result, that the signal-to-noise ratio of the downlink reference signals is greater than or equal to a second threshold value; or determining, according to the measurement result, that the ratio of the peak power of a first path to the peak power of a second path is greater than or equal to a third threshold value, the first path being a transmission path with the maximum received power corresponding to the first beam, and the second path being any transmission path other than the transmission path with the maximum received power corresponding to the first beam.

7. The method according to claim 5 or 6, characterized in that, The information of the reflection path comprises information of the first beam corresponding to the reflection path, and the information of the first beam comprises an angle of arrival corresponding to the first beam.

8. The method according to any one of claims 5 to 7, characterized in that, The method further comprises: receiving first information, the first information being used to obtain the information of the reflection path.

9. A perception method comprising: The method comprises: transmitting first indication information, the first indication information being used to indicate suppression of signals on a reflection path corresponding to a first beam, the reflection path being a transmission path of signals reflected by a sensing target; receiving, on the reflection path corresponding to the first beam, suppressed uplink reference signals.

10. The method of claim 9, wherein, The method further comprises: receiving, on a scattering path corresponding to the first beam, unsuppressed uplink reference signals, the scattering path being a transmission path of signals scattered by the sensing target.

11. The method according to claim 9 or 10, characterized in that, The first indication information is included in first configuration information, the first configuration information being used to configure uplink reference signal resources corresponding to the first beam, and wherein receiving the suppressed uplink reference signals on the reflection path corresponding to the first beam comprises: The suppressed uplink reference signal is received according to the uplink reference signal resource on a reflection path corresponding to the first beam.

12. The method according to any one of claims 9 to 11, characterized in that, The method further includes: transmitting a downlink reference signal on the first beam; receiving information of the reflection path.

13. The method of claim 12, wherein, The information of the reflection path includes information of the first beam corresponding to the reflection path, wherein the information of the first beam includes an angle of arrival corresponding to the first beam.

14. The method according to claim 12 or 13, characterized in that, The method further includes: transmitting first information used to obtain the information of the reflection path.

15. An apparatus, comprising: The apparatus includes a module for performing the method of any one of claims 1-8, or a module for performing the method of any one of claims 9-14.

16. An apparatus, comprising: The apparatus includes a processor configured to perform the method of any one of claims 1-8, or perform the method of any one of claims 9-14.

17. A computer-readable storage medium, characterized in that, The computer readable storage medium is configured to store a computer program, which, when executed on a computer, causes the method of any one of claims 1-8 to be performed, or causes the method of any one of claims 9-14 to be performed.

18. A computer program product, characterised in that, The computer program product includes a computer program, which, when executed on a computer, causes the computer to perform the method of any one of claims 1-8, or causes the computer to perform the method of any one of claims 9-14.

19. A perception system, comprising: The perception system includes a terminal and a network device, wherein The terminal is configured to perform the method of any one of claims 1-8; The network device is configured to perform the method of any one of claims 9-14.

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