Communication methods and communication devices

Abstract

This application provides a communication method and a communication device. The method may include: receiving first information, which indicates N three-dimensional straight lines; receiving a reference signal, which determines M three-dimensional straight lines, and the N and M three-dimensional straight lines are used to determine the line-of-sight (LoS) information of P paths; wherein the P paths include a first path, the LoS information of the first path is determined based on a first straight line and a second straight line, the first and second straight lines are associated, the first straight line belongs to the N three-dimensional straight lines, and the second straight line belongs to the M three-dimensional straight lines. Based on this, the receiving device can more accurately identify the LoS path of the perceived target, thereby improving the target detection performance.

Description

Technical Field

[0001] This application relates to the field of communications, and more specifically, to a communication method and a communication apparatus. Background Technology

[0002] Wireless sensing is an important technology for the future. In wireless sensing, transmitting devices can radiate electromagnetic waves and send specific signals to the surrounding environment, while receiving devices can correspondingly receive the electromagnetic waves and signals reflected by the environment. The transceiver can then compare and analyze the correlation between the received and transmitted signals to deduce relevant information about the surrounding environment. However, the sensing target channel includes not only the line-of-sight (LoS) path from the transmitting device through the target to the receiving device, but also the non-line-of-sight (NLoS) path reflected by the target and other scattering objects in the surrounding environment. Therefore, how to assist the receiving device in more accurately identifying the LoS path of the sensing target is a problem that urgently needs to be solved in this field. Summary of the Invention

[0003] This application provides a communication method and a communication device that can assist receiving devices in more accurately identifying the Loss Path (LoS) of a sensing target.

[0004] Firstly, a communication method is provided. This method can be applied to a second device (e.g., a terminal device or a network device); that is, the method can be executed by the second device or by components of the second device (e.g., a chip, chip system, circuit, communication module, or processor), and this application does not limit this. The following description primarily uses a second device as an example.

[0005] The method may include: receiving first information, the first information indicating N three-dimensional straight lines; receiving a reference signal, the reference signal determining M three-dimensional straight lines, the N three-dimensional straight lines and the M three-dimensional straight lines determining the line-of-sight (LoS) information of P paths; wherein the P paths include a first path, the LoS information of the first path is determined based on a first straight line and a second straight line, the first straight line and the second straight line are associated, the first straight line belongs to the N three-dimensional straight lines, the second straight line belongs to the M three-dimensional straight lines, and N, M and P are positive integers.

[0006] Based on the above technical solution, the second device can receive the first information to determine N three-dimensional straight lines on the side of the first device that sent the reference signal, and receive the reference signal to determine M three-dimensional straight lines on the side of the second device. Furthermore, the second device can determine the Loss of Sight (LoS) information of P paths between the first and second devices based on the aforementioned N and M three-dimensional straight lines. For example, it can determine whether any one of the P paths is a LosS path, or determine the probability that any one of the P paths is a LosS path. Based on this, the second device can use the three-dimensional straight lines corresponding to the paths to assist in determining the LoS information of the paths, thereby eliminating ghosting targets caused by non-line-of-sight (NLoS) paths.

[0007] In conjunction with the first aspect, in certain implementations of the first aspect, the first information is used to indicate N three-dimensional straight lines, including: the first information indicates a third straight line among the N three-dimensional straight lines by at least one of the following: the coordinates of two reference points on the third straight line; the coordinates of one reference point on the third straight line and the direction vector of the third straight line; and the parameters of the general equation of the third straight line.

[0008] Based on the above technical solution, the first information can indicate any three-dimensional straight line among the N transmitting side straight lines through two-point, point-to-point, or general methods.

[0009] In conjunction with the first aspect, in some implementations of the first aspect, the first information is further used to indicate N resource locations and / or P first delays; wherein, the N resource locations correspond one-to-one with the N three-dimensional straight lines, and each of the P first delays corresponds to one of the N three-dimensional straight lines.

[0010] Based on the above technical solution, the first information can also indicate N resource locations and / or P first delays, so that the second device can further associate the three-dimensional straight lines of the first device side and the second device side corresponding to the same path according to the N resource locations and / or P first delays.

[0011] In conjunction with the first aspect, in some implementations of the first aspect, the number of reference signals is N, and the N resource locations correspond one-to-one with the N three-dimensional straight lines, including: the N resource locations are used to receive the N reference signals, the transmission beam direction of each of the N reference signals and the coordinates of the first device are used to determine one of the N three-dimensional straight lines, and the first device is a device that transmits the N reference signals.

[0012] Based on the above technical solution, the second device can receive N reference signals at N resource locations indicated by the first information. The transmission beam direction of each of the N reference signals and the coordinates of the first device can determine one of the N three-dimensional straight lines, thereby making a one-to-one correspondence between the N resource locations and the N three-dimensional straight lines.

[0013] In conjunction with the first aspect, in some implementations of the first aspect, the number of reference signals is N, and receiving the reference signals includes: receiving the N reference signals at the N resource locations; the association between the first straight line and the second straight line includes: the first straight line corresponds to a first resource location among the N resource locations, the second straight line is determined based on the first reference signal among the N reference signals, and the resource location for receiving the first reference signal is the first resource location.

[0014] Based on the above technical solution, the first straight line and the second straight line used to determine a path can be associated by corresponding to the same resource location. In other words, the second device can find the first straight line and the second straight line used to determine a path by having the same corresponding resource location.

[0015] In conjunction with the first aspect, in some implementations of the first aspect, the reference signal is used to determine P second time delays, each of the P second time delays corresponding to one of the M three-dimensional straight lines, the first straight line and the second straight line being associated, including: the first straight line corresponding to a third time delay among the P first time delays, the second straight line corresponding to a fourth time delay among the P second time delays, the third time delay and the fourth time delay being equal, or the difference between the third time delay and the fourth time delay being less than or equal to a first threshold.

[0016] Based on the above technical solution, the first straight line and the second straight line used to determine a path can be associated by corresponding equal or similar time delays. In other words, the second device can find the first straight line and the second straight line used to determine a path by corresponding equal or similar time delays.

[0017] In conjunction with the first aspect, in some implementations of the first aspect, the reference signal is used to determine P second time delays, each of the P second time delays corresponding to one of the M three-dimensional straight lines, including: the reference signal is used to determine the time delay and arrival angle of the P paths, the P second time delays are the time delays of the P paths, the arrival angle of each of the P paths and the coordinates of the second device are used to determine one of the M three-dimensional straight lines, and the second device is a device that receives the reference signal.

[0018] Based on the above technical solution, the second device can determine the time delay and arrival angle of P paths according to the reference signal. The time delay of the P paths is P second time delays. The arrival angle of each of the P paths and the coordinates of the second device can determine one of the M three-dimensional straight lines, thereby corresponding each of the P second time delays to one of the M three-dimensional straight lines.

[0019] In conjunction with the first aspect, in some implementations of the first aspect, the method can be applied to a second device, and the method may further include: determining the arrival angles of the P paths based on the reference signal, the arrival angles including azimuth angles and vertical angles; and determining the M three-dimensional straight lines based on the coordinates of the second device and the arrival angles of the P paths.

[0020] Based on the above technical solution, the reference signal is used to determine M three-dimensional straight lines. Specifically, the second device can determine the arrival angles of P paths based on the reference signal, and then determine the M receiving-side straight lines based on the coordinates of the second device and the arrival angles of the P paths.

[0021] In conjunction with the first aspect, in some implementations of the first aspect, the Loss information of the first path is determined based on the first straight line and the second straight line, which may include: determining the first path as a Loss path when the distance between the first straight line and the second straight line is less than or equal to a second threshold; and determining the first path as a non-line-of-sight (NLoS) path when the distance between the first straight line and the second straight line is greater than the second threshold.

[0022] Based on the above technical solution, the second device can determine whether the first path is a Loss-of-Stake (LoS) path by measuring the distance between the first straight line and the second straight line. For example, the second device can compare the distance between the first straight line and the second straight line with a second threshold to determine whether the first path is a LoS path.

[0023] In conjunction with the first aspect, in some implementations of the first aspect, the Loss information of the first path is determined based on the first straight line and the second straight line, and may include: the Loss information of the first path is the probability that the first path is a Loss path, and the probability that the first path is a Loss path is inversely proportional to the distance between the first straight line and the second straight line.

[0024] Based on the above technical solution, the second device can determine the probability that the first path is a Loss-of-Stake (LoS) path by measuring the distance between the first straight line and the second straight line. For example, the probability that the first path is a LoS path can be inversely proportional to the distance between the first straight line and the second straight line.

[0025] In conjunction with the first aspect, in some implementations of the first aspect, the method may further include: determining K paths among the P paths as Loss Paths; sending second information, the second information being used to indicate information about the K paths.

[0026] Based on the above technical solution, the second device can only report information about the LoS path, thereby reducing reporting overhead and achieving more efficient reporting.

[0027] In conjunction with the first aspect, in some implementations of the first aspect, the method may further include: determining K paths among the P paths, wherein the probability that the K paths are Loss paths is greater than or equal to a third threshold; and sending second information, the second information being used to indicate information about the K paths.

[0028] Based on the above technical solution, the second device can only report information on paths whose probability of being a Loss path is greater than or equal to a threshold, thereby reducing reporting overhead and achieving more effective reporting.

[0029] In conjunction with the first aspect, in some implementations of the first aspect, the method may further include: sending second information, the second information being used to indicate information about the P paths and P first values, the P first values ​​respectively indicating whether the P paths are Loss paths, or the P first values ​​respectively indicating the probability that the P paths are Loss paths.

[0030] Based on the above technical solution, the second device can report information on P paths and indicate whether each of the P paths is a Loss-of-Stake (LoS) path or the probability of it being a LoS path.

[0031] Secondly, a communication method is provided. This method can be applied to a first device (e.g., a network device or a terminal device), meaning the method can be executed by the first device or by components of the first device (e.g., a chip, chip system, circuit, communication module, or processor), and this application does not limit this. The following description primarily uses a first device as an example.

[0032] The method may include: sending first information, the first information being used to indicate N three-dimensional straight lines; sending a reference signal, the reference signal being used to determine M three-dimensional straight lines, the N three-dimensional straight lines and the M three-dimensional straight lines being used to determine the line-of-sight (LoS) information of P paths; wherein the P paths include a first path, the LoS information of the first path is determined based on a first straight line and a second straight line, the first straight line and the second straight line are associated, the first straight line belongs to the N three-dimensional straight lines, the second straight line belongs to the M three-dimensional straight lines, and N, M and P are positive integers.

[0033] In conjunction with the second aspect, in some implementations of the second aspect, the first information is used to indicate N three-dimensional straight lines, including: the first information indicates a third straight line among the N three-dimensional straight lines by at least one of the following: the coordinates of two reference points on the third straight line; the coordinates of one reference point on the third straight line and the direction vector of the third straight line; and the parameters of the general equation of the third straight line.

[0034] In conjunction with the second aspect, in some implementations of the second aspect, the first information is further used to indicate N resource locations and / or P first delays; wherein, the N resource locations correspond one-to-one with the N three-dimensional straight lines, and each of the P first delays corresponds to one of the N three-dimensional straight lines.

[0035] In conjunction with the second aspect, in some implementations of the second aspect, the number of reference signals is N, and the N resource locations correspond one-to-one with the N three-dimensional straight lines. This may include: the N resource locations are used to receive the N reference signals, and the transmission beam direction of each of the N reference signals and the coordinates of the first device are used to determine one of the N three-dimensional straight lines, wherein the first device is a device that transmits the N reference signals.

[0036] In conjunction with the second aspect, in some implementations of the second aspect, the number of reference signals is N, and transmitting the reference signals may include: transmitting the N reference signals at the N resource locations; the association between the first straight line and the second straight line may include: the first straight line corresponds to a first resource location among the N resource locations, the second straight line is determined based on the first reference signal among the N reference signals, and the resource location used to transmit the first reference signal is the first resource location.

[0037] In conjunction with the second aspect, in some implementations of the second aspect, the reference signal is used to determine P second delays, each of the P second delays corresponding to one of the M three-dimensional straight lines, the first straight line and the second straight line being associated, including: the first straight line corresponding to a third delay among the P first delays, the second straight line corresponding to a fourth delay among the P second delays, the third delay and the fourth delay being equal, or the difference between the third delay and the fourth delay being less than or equal to a first threshold.

[0038] In conjunction with the second aspect, in some implementations of the second aspect, the reference signal is used to determine P second time delays, each of the P second time delays corresponding to one of the M three-dimensional straight lines, including: the reference signal is used to determine the time delay and arrival angle of the P paths, the P second time delays are the time delays of the P paths, the arrival angle of each of the P paths and the coordinates of the second device are used to determine one of the M three-dimensional straight lines, and the second device is a device that receives the reference signal.

[0039] In conjunction with the second aspect, in some implementations of the second aspect, the reference signal is used to determine M three-dimensional straight lines, including: the reference signal is used to determine the arrival angles of the P paths, the arrival angles including azimuth angles and vertical angles; the arrival angles of the P paths and the coordinates of a second device are used to determine the M three-dimensional straight lines, the second device being a device that receives the reference signal.

[0040] In conjunction with the second aspect, in some implementations of the second aspect, the Loss information of the first path is determined based on the first straight line and the second straight line, which may include: when the distance between the first straight line and the second straight line is less than or equal to a second threshold, the first path is a Loss path; when the distance between the first straight line and the second straight line is greater than the second threshold, the first path is a non-line-of-sight (NLoS) path.

[0041] In conjunction with the second aspect, in some implementations of the second aspect, the Loss information of the first path is determined based on the first straight line and the second straight line, including: the Loss information of the first path is the probability that the first path is a Loss path, and the probability that the first path is a Loss path is inversely proportional to the distance between the first straight line and the second straight line.

[0042] In conjunction with the second aspect, in some implementations of the second aspect, the method may further include: receiving second information, the second information being used to indicate information about K Loss paths among the P paths.

[0043] In conjunction with the second aspect, in some implementations of the second aspect, the method may further include: receiving second information, the second information being used to indicate information about K paths among the P paths, the probability that the K paths are Loss paths is greater than or equal to a third threshold.

[0044] In conjunction with the second aspect, in some implementations of the second aspect, the method may further include: receiving second information, the second information being used to indicate information about the P paths and P first values, the P first values ​​respectively indicating whether the P paths are Loss paths, or the P first values ​​respectively indicating the probability that the P paths are Loss paths.

[0045] For the beneficial effects and possible designs of the second aspect, please refer to the relevant description in the first aspect, which will not be repeated here.

[0046] Thirdly, a communication apparatus is provided for performing the methods of the first or second aspect and any possible implementation thereof. Specifically, the apparatus may include units and / or modules for performing the methods of the first or second aspect and any possible implementation thereof, such as processing units and / or communication units.

[0047] In one implementation, the device is a communication device (such as a second device, or a first device). When the device is a communication device, the communication unit can be a transceiver, or an input / output interface; the processing unit can be at least one processor. Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.

[0048] In another implementation, the device is a chip, chip system, circuit, or communication module for a communication device (such as a second device or a first device). When the device is a chip, chip system, or circuit for a communication device, the communication unit may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip, chip system, or circuit; the processing unit may be at least one processor, processing circuit, or logic circuit.

[0049] Fourthly, a communication device is provided, the device comprising: at least one processor configured to cause the device to perform the methods of the first or second aspect and any possible implementation thereof.

[0050] Optionally, the at least one processor is configured to execute computer programs or instructions to perform the methods described in the first or second aspect and any possible implementation thereof.

[0051] Optionally, the device further includes a memory for storing the computer program or instructions.

[0052] Optionally, the at least one processor is coupled to a memory for storing the computer program or instructions. The memory may be located externally to the device.

[0053] Optionally, the device also includes a communication interface through which the processor reads instructions from memory. This can be understood as the communication interface being coupled to the processor and used to input computer programs or instructions to the processor, or to output information from the processor.

[0054] Unless otherwise specified, or if the transmission and acquisition / reception operations involved do not contradict their actual function or internal logic in the relevant description, they can be understood as output, input, or other operations, or as transmission and reception operations performed by radio frequency circuits and antennas. This application does not limit them in this regard.

[0055] In one implementation, the device is a communication device (such as a second device, or a first device).

[0056] In another implementation, the device is a chip, chip system, circuit, or communication module for a communication device (such as the second device, or the first device). Optionally, the chip is a modem chip, also known as a baseband chip, or a system-on-chip (SoC) chip containing a modem core, or a system-in-package (SIP) chip.

[0057] Fifthly, a computer-readable storage medium is provided that stores a computer program (e.g., program code) or instructions that, when executed on a communication device, cause the communication device to perform the methods described in the first or second aspect and any possible implementation thereof.

[0058] In a sixth aspect, a computer program product containing instructions is provided, which, when run on a computer, causes the computer to perform the methods of the first or second aspect and any possible implementation thereof.

[0059] In a seventh aspect, a communication system is provided, including a first communication device and a second communication device. The first communication device is used to execute the method provided in any implementation of the first aspect, and the second communication device is used to execute the method provided in any implementation of the second aspect. Attached Figure Description

[0060] Figure 1 This is a schematic diagram of a wireless communication system applicable to embodiments of this application.

[0061] Figure 2 This is a schematic diagram of basic sensory perception.

[0062] Figure 3 This is a schematic diagram of a communication method 300 provided in an embodiment of this application.

[0063] Figure 4 This is a schematic diagram of a transmitting-side straight line and a receiving-side straight line provided in an embodiment of this application.

[0064] Figure 5This is another schematic diagram of the transmitting side line and the receiving side line provided in the embodiments of this application.

[0065] Figure 6 This is another schematic diagram of the transmitting side line and the receiving side line provided in the embodiments of this application.

[0066] Figure 7 This is a schematic diagram illustrating different beams corresponding to different launch angles, provided in an embodiment of this application.

[0067] Figure 8 This is a schematic diagram of a first device and a second device exchanging reference signals according to an embodiment of this application.

[0068] Figure 9 This is a schematic diagram of a communication device 900 provided in an embodiment of this application.

[0069] Figure 10 This is a schematic diagram of another communication device 1000 provided in an embodiment of this application.

[0070] Figure 11 This is a schematic diagram of a chip system 1100 provided in an embodiment of this application. Detailed Implementation

[0071] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0072] Before introducing the scheme of this application, the following points should be noted.

[0073] (1) In this application, "instruction" can include direct instruction, indirect instruction, explicit instruction, implicit instruction, etc. When describing an instruction information as indicating A, it can be understood that the instruction information carries A, carries the identifier of A, carries B which is associated with A, carries the identifier of B which is associated with A, etc. In other words, if the receiving side of an instruction information can determine A based on the instruction information, it can be described as the instruction information indicating A, and the specific method of determination is not limited. When it is understood that the instruction information carries A, "instruction" can be replaced with "includes". In this case, a statement such as "send / receive instruction information, the instruction information indicates A" can be replaced with "send / receive A".

[0074] In this application, the information indicated by the instruction information is called the information to be instructed. In specific implementations, there are many ways to indicate the information to be instructed, such as, but not limited to, directly indicating the information to be instructed, such as the information to be instructed itself or its index. It can also indirectly indicate the information to be instructed by indicating other information, where there is a relationship between the other information and the information to be instructed. It can also indicate only a part of the information to be instructed, while the other parts are known or pre-agreed upon. For example, the instruction of specific information can be achieved by using a pre-agreed (e.g., protocol-defined) arrangement of various pieces of information, thereby reducing instruction overhead to some extent. Furthermore, the information to be instructed can be sent as a whole or divided into multiple sub-information pieces, and the sending period and / or timing of these sub-information pieces can be the same or different.

[0075] (2) In this application, the expression " / " is used to indicate that the objects before and after are in an "or" relationship; for example, A / B can mean: A or B. The expression "and / or" is used to indicate that the objects before and after are in a relationship of either "and" or "or"; for example, A and / or B can mean the following: A exists alone, B exists alone, A and B exist simultaneously, where A and B can be single or multiple. "At least one of the following" or similar expressions are used to indicate any combination of the listed items; for example, at least one of A, B and / or C can mean the following: A exists alone, B exists alone, C exists alone, A and B exist simultaneously, B and C exist simultaneously, A and C exist simultaneously, A, B and C exist simultaneously, where A, B, and C can be single or multiple.

[0076] (3) In this application, "send" and "receive" indicate the direction of signal transmission. For example, "send information to XX" can be understood as the destination of the information being XX, which may include direct transmission via the air interface or indirect transmission by other units or modules via the air interface. "Receive information from YY" can be understood as the source of the information being YY, which may include direct reception from YY via the air interface or indirect reception from YY by other units or modules via the air interface. "Send" can also be understood as the "output" of the chip interface, and "receive" can also be understood as the "input" of the chip interface. In other words, sending and receiving can occur between devices, such as between network devices and terminal devices, or within a device, such as between components, modules, chips, software modules, or hardware modules within the device via a bus, wiring, or interface.

[0077] (4) In the various embodiments of this application, unless otherwise specified or in case of logical conflict, the terms and / or descriptions of different embodiments are consistent and can be referenced by each other. The technical features of different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0078] (5) In this application, "first," "second," and "#1," "#2," and "#A" are merely for descriptive convenience and are used to distinguish objects, and are not intended to limit the scope of the embodiments of this application. They are not used to describe the order or sequence of features. It should be understood that such described objects can be interchanged where appropriate in order to describe solutions other than those in the embodiments of this application.

[0079] (6) In this application, "predefined" can mean a standard protocol predefined, or it can mean a pre-agreed or pre-negotiated agreement between devices. Here, "protocol" can refer to a standard protocol in the field of communications, for example, it may include fourth-generation (4G) protocols. th Generation 4G network, fifth generation (5G) network th This application does not limit the scope to network protocols such as generation (5G), new radio (NR) protocols, 5.5G network protocols, future communication network protocols, and related protocols applied in future communication systems.

[0080] (7) In this application, the words “exemplary,” “for example,” etc., are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as an “example” in this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of the word “example” is intended to present the concept in a concrete manner. In the embodiments of this application, “of,” “corresponding, relevant,” and “corresponding” may sometimes be used interchangeably, and it should be noted that their intended meanings are consistent unless their distinction is emphasized.

[0081] First, let me introduce the communication system to which this application applies.

[0082] The technical solutions provided in this application can be applied to various communication systems, such as 5th generation (5G) or new radio (NR) systems, long term evolution (LTE) systems, LTE frequency division duplex (FDD) systems, and LTE time division duplex (TDD) systems. The technical solutions provided in this application can also be applied to future communication systems, such as future mobile communication networks. The technical solutions provided in this application can also be applied to device-to-device (D2D) communication, vehicle-to-everything (V2X) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), and Internet of Things (IoT) communication systems. The technical solutions provided in this application can also be applied to non-terrestrial network (NTN) systems such as inter-satellite communication and satellite communication.

[0083] As an example, a satellite communication system includes a satellite base station and terminal equipment. The satellite base station provides communication services to the terminal equipment. Satellite base stations can also communicate with each other. A satellite can act as a base station or as a terminal device. Here, "satellite" can refer to drones, hot air balloons, low-Earth orbit satellites, medium-Earth orbit satellites, high-Earth orbit satellites, etc. "Satellite" can also refer to non-terrestrial base stations or non-terrestrial equipment.

[0084] As an example, V2X communication can include: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, and vehicle-to-network (V2N) communication.

[0085] In a communication system, a device can send signals to or receive signals from another device. These signals can include information, signaling, or data. The device can also be replaced by an entity, network entity, communication equipment, communication module, node, communication node, etc. This application uses a device as an example for description.

[0086] The terminal device in this application embodiment can be a device or module that accesses the aforementioned communication system and has corresponding communication functions. The terminal device can include various devices with wireless communication capabilities, which can be used to connect people, objects, machines, etc. The terminal device can be widely applied in various scenarios, such as: cellular communication, D2D, V2X, peer-to-peer (P2P), M2M, MTC, IoT, virtual reality (VR), augmented reality (AR), industrial control, autonomous driving, telemedicine, smart grids, smart furniture, smart offices, smart wearables, smart transportation, smart cities, drones, robots, remote sensing, passive sensing, positioning, navigation and tracking, autonomous delivery, etc. The terminal device can be a terminal in any of the above scenarios, such as an MTC terminal, an IoT terminal, etc. Terminal equipment can be user equipment (UE), terminal, fixed equipment, mobile station equipment or mobile equipment, subscriber unit, handheld device, vehicle-mounted equipment, wearable device, cellular phone, smartphone, session initiation protocol (SIP) phone, wireless data card, personal digital assistant (PDA), computer, tablet computer, laptop computer, wireless modem, handset, laptop computer, computer with wireless transceiver capability, smart book, vehicle, satellite, global positioning system (GPS) device, target tracking device, aircraft (e.g., drone, helicopter, multiple helicopters, four helicopters, or airplanes), ship, remote control device, smart home device, industrial equipment, transportation vehicle with wireless communication capability, communication module, or roadside unit with terminal function, all conforming to the 3GPP standard. The device may be a wireless communication unit (RSU), or a device built into the aforementioned device (e.g., a communication module, modem, or chip in the aforementioned device), or other processing devices connected to the wireless modem.

[0087] It should be understood that in certain scenarios, a UE can also be used as a base station. For example, a UE can act as a scheduling entity, providing sidelink signaling between UEs in scenarios such as V2X, D2D, or P2P.

[0088] In this embodiment, the device for implementing the functions of a terminal device, i.e., the terminal device, can be the terminal device itself, or it can be any device capable of supporting the terminal device in implementing the functions, such as a chip system, chip, circuit, or communication module (i.e., a communication module that performs communication functions). This device can be installed in the terminal device. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices. Furthermore, the device can also be configured with program instructions for performing corresponding communication functions.

[0089] The network device in this application embodiment can be a device or module with corresponding communication functions. The network device can be a device used to communicate with terminal devices; it can also be called an access network device or a wireless access network device, such as a base station. In this application embodiment, the network device can refer to a radio access network (RAN) node (or device) that connects the terminal device to the wireless network. A base station can broadly encompass, or be replaced by, various names including: NodeB, evolved NodeB (eNB), next-generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitter, master station, auxiliary station, multiple standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. A base station can be a macro base station, micro base station, relay node, donor node, or similar, or a combination thereof. A base station can also refer to a communication module, modem, or chip installed within the aforementioned equipment or apparatus. A base station can also be a mobile switching center, a device that performs base station functions in D2D, V2X, and M2M communications, a network-side device in future communication networks, or a device that performs base station functions in future communication systems. A base station can support networks using the same or different access technologies. The embodiments of this application do not limit the specific technologies or device forms used in the network equipment.

[0090] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move depending on the location of the mobile base station. In other examples, a helicopter or drone can be configured as a device to communicate with another base station.

[0091] In some deployments, the network devices mentioned in the embodiments of this application may be devices including CU, or DU, or devices including CU and DU, or devices with control plane CU nodes (central unit-control plane (CU-CP)) and user plane CU nodes (central unit-user plane (CU-UP)) and DU nodes.

[0092] In some deployments, multiple RAN nodes collaborate to assist terminal devices in achieving wireless access, with different RAN nodes each implementing some of the base station's functions. For example, RAN nodes can be CUs, DUs, CU-CPs, CU-UPs, or radio units (RUs). CUs and DUs can be configured separately or included in the same network element, such as a BBU. RUs can be included in radio equipment or radio units, such as RRUs, AAUs, or RRHs.

[0093] 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, a radio access network can also be an open radio access network (O-RAN) architecture. In an O-RAN system, CU can also be called an open CU (open CU, O-CU), DU can also be called an open DU (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-UP), and RU can also be called an open RU (open RU, O-RU). Any of the units among CU (or CU-CP, CU-UP), DU, and RU in this application can be implemented through software modules, hardware modules, or a combination of software modules and hardware modules.

[0094] In this embodiment, the device for implementing the functions of a network device can be a network device itself, or a device capable of supporting the network device in implementing those functions, such as a chip system, chip, circuit, or communication module (i.e., a communication module that performs communication functions). This device can be installed within the network device. In this embodiment, the chip system can be composed of chips, or it can include chips and other discrete devices. Furthermore, the device can be configured with program instructions for performing corresponding communication functions. This embodiment only uses a network device as an example to illustrate the device for implementing the functions of a network device, and does not limit the solution of this embodiment.

[0095] Network devices and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; and they can also be deployed in the air on airplanes, balloons, and satellites. This application does not limit the scenario in which the network devices and terminal devices are located.

[0096] Combination Figure 1 The communication system applicable to the embodiments of this application is briefly described below.

[0097] See Figure 1 As an example, Figure 1 This is a schematic diagram of a wireless communication system applicable to embodiments of this application. For example... Figure 1 As shown, the wireless communication system includes a wireless access network 100. The wireless access network 100 can be a next-generation (e.g., future communication networks or higher) wireless access network, or a traditional (e.g., 5G, 4G, 3G, or 2G) wireless access network. One or more terminal devices (120a-120j, collectively referred to as 120) can be interconnected or connected to one or more network devices (110a, 110b, collectively referred to as 110) within the wireless access network 100. Network elements in the wireless communication system are connected via interfaces (e.g., NG, Xn) or over-the-air interfaces.

[0098] When network devices and terminal devices communicate, the network device can manage one or more cells, and a cell can include at least one terminal device. A cell can be understood as an area within the wireless signal coverage range of the network device.

[0099] Figure 1 This is just an illustration; the wireless communication system may also include other devices, such as core network equipment, wireless relay equipment, and / or wireless backhaul equipment. Figure 1 It is not shown in the middle.

[0100] To facilitate understanding of the embodiments of this application, the terminology used in this application will be briefly explained. Furthermore, for ease of description, the terminal device will be described below using a terminal or UE as an example.

[0101] 1. Wireless Sensing: With the development of communication technology, wireless sensing technology has become a very important technology. In wireless sensing, a transmitting device (Tx) can radiate electromagnetic waves and send specific signals to the surrounding environment, and a corresponding receiving device (Rx) receives the electromagnetic waves and signals reflected by the environment. By comparing and analyzing the correlation between the transmitted and received signals, the transceiver devices determine relevant information about the surrounding environment. For example, the transceiver device can analyze the relationship between the transmitted and received signals to determine whether there is a target object to be detected or sensed in the environment, the distance between the target and the transceiver device, the target's orientation or angle relative to the transceiver device (e.g., horizontal or vertical), and the target's speed relative to the transceiver device.

[0102] For example, in the context of the Internet of Vehicles (IoV), vehicles can obtain information about their surroundings through wireless sensing, including the position and / or speed of moving objects such as vehicles and pedestrians, as well as information about relatively stationary objects such as roads and fences. In airports, for instance, specialized equipment can be deployed to monitor drones, preventing them from interfering with the safety of passenger planes taking off and landing. And in home environments, wireless sensing can be used for intruder detection to improve home security and privacy.

[0103] 2. Bi-static Sensing: Bi-static sensing is an important sensing mode in wireless sensing. In bi-static sensing, targets in the surrounding environment are typically sensed by one device transmitting a signal and another receiving it. For example, a network device transmits a signal, and a terminal device receives it; or, a terminal device transmits a signal, and a network device receives it; or, network device A transmits a signal, and network device B receives it; or, terminal device A transmits a signal, and terminal device B receives it, etc. The channel between the transmitting and receiving devices can consist of two parts: a background channel and a target sensing channel. The target sensing channel consists of paths passing through the target, which can be one or more. The background channel consists of paths that do not pass through the target. For example, in a target detection scenario, buildings and the ground in the surrounding environment can be considered non-target / static scatterers, and paths reflected directly from buildings or the ground can be considered paths in the background channel. The receiving device can eliminate the influence of the background channel using methods such as background cancellation or static component cancellation to extract relevant target information from the target sensing channel.

[0104] However, the target sensing channel includes not only the line-of-sight (LoS) path from the transmitting device through the target to the receiving device, but also the non-line-of-sight (NLoS) path reflected by the target and other scattering objects in the surrounding environment. In particular, the NLoS path reflected by large environmental objects (such as building walls) has relatively high received power and cannot be ignored.

[0105] See Figure 2 As an example, Figure 2 This is a schematic diagram of basic sensory perception. Figure 2 In the diagram, the aforementioned LosS path can be represented by a dashed line, and the aforementioned NLoS path can be represented by a solid line. Figure 2 The target in this context can also be called the sensing target, and the scattering object can be, for example, a building wall. The link from the transmitting device to the target to the receiving device corresponds to the target's Loss of Sight (LoS) path, while the link from the transmitting device to the target to the scattering object to the receiving device corresponds to the target's Non-LoS (NLoS) path. On one hand, the existence of the NLoS path can lead to ghost targets, meaning the receiving device might perceive a target in the direction of the scattering object, resulting in severe false alarms. Ghost targets are also called false targets, i.e., targets that do not actually exist. On the other hand, in the case of multiple targets, the NLoS path power of a strong target may be greater than the LoS path power of a weak target, thus affecting the true target, such as causing the weak target to be missed.

[0106] As an example, the above description of target LoS paths and NLoS paths can also be understood as follows: the path in the target channel is determined by the states of the two links: the link from the transmitting device to the target, and the link from the target to the receiving device. Only when both links are direct is the path a LoS path; otherwise, it is an NLoS path. That is, an NLoS path includes not only... Figure 2 The scenario shown, which involves a transmitting device, a target, a scatterer, and a receiving device, also includes scenarios such as a transmitting device, a scatterer, a target, a receiving device, and a transmitting device, a scatterer, a target, a scatterer, and a receiving device.

[0107] 3. Measurement Reporting: The receiving device can report the detected multipath information to a third device, facilitating analysis and obtaining the final sensing result. The third device can be a core network device, such as a network element responsible for sensing functions (SF) in the core network, or other sensing servers, such as a terminal cloud. For positioning, the receiving device primarily reports the first path information, as the first path typically corresponds to the link between the transmitting and receiving devices, i.e., the LoS path between them. The first path delay corresponds to the physical distance between the transmitting and receiving devices, and the first path angle corresponds to the angle between the transmitting and receiving devices. Based on the first path information, the transmitting or receiving device can be located. Of course, besides the first path, positioning also supports reporting a small number of multipaths. For example, for a positioning reference signal resource, in addition to reporting the first path measured based on that resource, it can also support reporting information for 2 or 8 additional paths. Understandably, the more multipaths reported, the greater the reporting overhead.

[0108] As an example, the above-mentioned positioning is for locating the device, obtaining the position of the transmitting or receiving device. However, the embodiments of this application mainly involve wireless sensing scenarios. The purpose of sensing is mainly to obtain relevant information about the target between the transmitting and receiving devices. For example, the target's position, speed, micro-Doppler information, etc. Therefore, sensing mainly needs to report the information of the transmitting device-target-receiving device link, that is, the target's Loss of Sight (LoS) path. It can be understood that the LoS path in the embodiments of this application is different from the LoS path defined in the above-mentioned positioning or communication. The LoS path in the embodiments of this application is not the line-of-sight path between the transmitting and receiving devices, but the path from the transmitting device to the receiving device after being reflected by the target, and this path only passes through one reflection at the target. The LoS path in the following embodiments of this application refers to the sensing LoS path, or the sensing target's LoS path.

[0109] To achieve more accurate target detection, the receiving device should determine the Loss of Sight (LoS) information of the detection path to avoid missed detections or false alarms. On the other hand, when the receiving device needs to report multipath information, it should at least report the LoS path information of all targets. However, a target may also have an Non-LoS (NLoS) path in addition to its LoS path. This could lead to a situation where, in environments with rich reflections, the receiving device detects a large number of paths, resulting in high reporting overhead; or, if the number of supported reporting paths is limited, it might fail to report the LoS path of weak targets while reporting the NLoS path of strong targets, also leading to missed detections or false alarms. However, the receiving device cannot accurately determine the LoS information of the path based solely on the received reference signal.

[0110] In view of this, this application proposes that the receiving device receives auxiliary information for indicating the three-dimensional straight line on the transmitting side, and uses the three-dimensional straight line on the transmitting side and the three-dimensional straight line on the receiving side corresponding to the path to determine the Loss of Path (LoS) information of the path, thereby achieving more accurate target detection.

[0111] The methods provided by the embodiments of this application will be described in detail below with reference to the accompanying drawings. The embodiments provided by this application can be applied to the scenarios shown in the above figures, and are not limited thereto.

[0112] See Figure 3 As an example, Figure 3 This is a schematic diagram of a communication method 300 provided in an embodiment of this application. For ease of description, a first device and a second device are used as examples for illustrative purposes. The first device can be replaced by a component of the first device (e.g., a chip, chip system, circuit, communication module, or processor), and the second device can be replaced by a component of the second device (e.g., a chip, chip system, circuit, communication module, or processor). Furthermore, the steps described below as being performed by a single execution entity can also be divided into steps performed by multiple execution entities, which can be logically and / or physically separated. Figure 3 The method 300 shown may include the following steps.

[0113] S310, the second device receives the first information. Correspondingly, the first device sends the first information. The first information indicates N three-dimensional straight lines, where N is a positive integer.

[0114] As an example, the second device can be used to receive sensing signals / reference signals sent by the transmitting device, and the second device can be used to determine relevant information about the sensing target, etc. That is, the second device can be the receiving device described above; the embodiments of this application do not limit its name, as long as it can perform the function.

[0115] Optionally, the second device may be a terminal device, or a network device, etc.

[0116] Optionally, the first device can be a terminal device, a network device, or a core network device. For example, the first device can also be a network element (SF) responsible for sensing functions in the core network. This application embodiment does not limit the name of the first device, as long as it can perform the function. The SF network element may not be deployed in the core network; for example, it can be deployed on the RAN side, or it can exist independently of the RAN and core network devices.

[0117] As an example, the first device is SF and the second device is the terminal device. This example applies to a scenario where SF indicates N three-dimensional straight lines to the terminal device.

[0118] As another example, the first device is terminal device #1 and the second device is terminal device #2. This example is applied to a scenario where one terminal device indicates N three-dimensional straight lines to another terminal device.

[0119] As an example, a three-dimensional straight line can be understood as a straight line in three-dimensional space. It can also be called a 3D straight line, a spatial straight line, a spatial three-dimensional straight line, or a three-dimensional spatial straight line, etc. Its name does not limit the scope of protection of the embodiments of this application.

[0120] In this embodiment, a three-dimensional straight line can be understood as either the three-dimensional straight line corresponding to the straight line segment where the transmitting device is located, or the three-dimensional straight line corresponding to the straight line segment where the receiving device is located, within the path between the transmitting device and the receiving device passing through the sensing target. Specifically, the three-dimensional straight line includes a transmitting-side three-dimensional straight line and a receiving-side three-dimensional straight line. The transmitting-side three-dimensional straight line can be understood as the three-dimensional straight line corresponding to the straight line segment where the transmitting device is located within the path passing through the sensing target, and the receiving-side three-dimensional straight line can be understood as the three-dimensional straight line corresponding to the straight line segment where the receiving device is located within the path passing through the sensing target. The three-dimensional straight line corresponding to a straight line segment can be understood as a three-dimensional straight line obtained by extending both sides of the straight line segment. A straight line segment can also be understood as a line segment, a three-dimensional straight line segment, a three-dimensional line segment, etc., and its name does not limit the scope of protection of this embodiment.

[0121] Specifically, the first information can indicate the third line among N three-dimensional lines through at least one of the following, wherein the third line can be any one of the N three-dimensional lines. Alternatively, the first information can indicate any one of the N three-dimensional lines through at least one of the following:

[0122] 1. Coordinates of two reference points on the third straight line (two-point form).

[0123] As an example, the first information may include the coordinates of two reference points on the third straight line, and thus the first information can indicate the third straight line through the coordinates of these two reference points. For example, the coordinates of reference point #1 can be denoted as (x1, y1, z1), and the coordinates of reference point #2 can be denoted as (x2, y2, z2). Based on the coordinates of reference point #1 and reference point #2, a three-dimensional straight line can be determined in a three-dimensional coordinate system. The three-dimensional coordinate system can be a rectangular coordinate system (x, y, z), or a spherical coordinate system (r, theta, phi), etc., and this embodiment of the application does not limit the scope.

[0124] A reference point on the third straight line can be understood as a point on the third straight line. It is understandable that by giving the coordinates of two reference points, a straight line in space can be determined, and this straight line passes through these two reference points. The coordinates of the reference points can also be referred to as the positions of the reference points, etc., and this application does not limit the specific terminology used in its embodiments.

[0125] 2. The coordinates of a reference point on the third line and the direction vector of the third line (point-to-direction form).

[0126] As an example, the first information may include the coordinates of a reference point on the third line and the direction vector of the third line. The first information can then indicate the third line using the coordinates of the reference point and the direction vector. For instance, the coordinates of reference point #3 are denoted as (x3, y3, z3), and the direction vector #1 is denoted as (a, b, c). Based on the coordinates of reference point #3 and the direction vector #1, a three-dimensional line can be determined in the coordinate system (x, y, z) of three-dimensional space.

[0127] 3. Parameters of the general equation of the third line (general form).

[0128] As an example, the first information may include parameters of the general equation of the third line, and thus indicate the third line through these parameters. For instance, the third line can be considered as the intersection of two planes. For parameters A1, B1, C1, D1, A2, B2, C2, D2, if the equations of the two intersecting planes are A1x + B1y + C1z + D1 = 0 and A2x + B2y + C2z + D2 = 0 respectively, then the coordinates of any point on the third line should simultaneously satisfy the equations of these two planes, that is, satisfy the system of equations formed by the above two equations. This system of equations is the general equation of the third line. Therefore, the first information can equivalently indicate the third line by indicating the parameters in this system of equations.

[0129] It should be noted that the coordinates / positions / direction vectors / parameters indicated above should be obtained in the global coordinate system, not in a local coordinate system with the first device's position as the origin. Therefore, both the first and second devices should have a unified understanding of the global coordinate system. For example, the coordinates of the first device in the global coordinate system can be obtained through positioning technology, and different starting angles can be transformed to the global coordinate system to determine the three-dimensional straight-line information in the global coordinate system. Considering that the first device may not want to expose its own position, the coordinates / positions of the reference point indicated above can be coordinates / positions other than those of the first device.

[0130] See Figure 4 As an example, Figure 4This is a schematic diagram of a three-dimensional straight line on the transmitting side and a three-dimensional straight line on the receiving side provided in an embodiment of this application. In this embodiment, the path between the transmitting device and the receiving device, passing through the sensing target, may include multiple paths. Each path can be considered as a combination of two sub-paths, where the first sub-path is the transmission path between the transmitting device and the sensing target, and the second sub-path is the transmission path between the sensing target and the receiving device. Each sub-path may be a direct transmission or a transmission through reflection from other scatterers. When the signal is directly transmitted from the transmitting device to the sensing target in the first sub-path, the first sub-path can be considered a direct transmission; when the signal is reflected from the transmitting device to the sensing target by one or more other scatterers in the first sub-path, the first sub-path can be considered a reflection transmission. Similarly, when the signal is directly transmitted from the sensing target to the receiving device in the second sub-path, the second sub-path can be considered a direct transmission; when the signal is reflected from the sensing target to the receiving device by one or more other scatterers in the second sub-path, the second sub-path can be considered a reflection transmission. In this context, the three-dimensional line on the transmitting side corresponding to each path can be understood as the three-dimensional line between the transmitting device and the sensing target, or the three-dimensional line between the transmitting device and the first-hop scatterer. When the first sub-path of this path is direct transmission, the three-dimensional line on the transmitting side is the three-dimensional line between the transmitting device and the sensing target. When the first sub-path of this path is reflective transmission, the three-dimensional line on the transmitting side is the three-dimensional line between the transmitting device and the first-hop scatterer. For example, if the first sub-path is transmitting device-scatterer 1-scatterer 2-sensing target, then scatterer 1 is the scatterer of the first hop. Similarly, the three-dimensional line on the receiving side corresponding to each path can be understood as the three-dimensional line between the sensing target and the receiving device, or the three-dimensional line between the last hop scatterer and the receiving device. When the second sub-path of this path is direct transmission, the line on the receiving side is the three-dimensional line between the sensing target and the receiving device. When the second sub-path of this path is reflective transmission, the three-dimensional line on the receiving side is the three-dimensional line between the last hop scatterer and the receiving device. For example, if the second sub-path is sensing target-scatterer 3-scatterer 4-receiving device, then scatterer 4 is the scatterer of the last hop. The three-dimensional line containing A and B can be understood as the three-dimensional line connecting A and B, or as two points on the three-dimensional line, or as the three-dimensional line passing through both A and B.

[0131] For example, please continue to see Figure 4Taking the example path that sequentially passes through the first device, the sensing target, the scatterer, and the second device as an example, the first sub-path is the path from the first device directly to the sensing target, and the corresponding three-dimensional straight line on the transmitting side of the example path is the three-dimensional straight line containing the first device and the sensing target. The second sub-path is the path from the sensing target through the scatterer to the second device, and the corresponding three-dimensional straight line on the receiving side of the example path is the three-dimensional straight line containing the scatterer and the second device. It can be understood that in the example path, the straight line segment containing the first device is the line connecting the first device and the sensing target as its two endpoints, and the corresponding three-dimensional straight line on the transmitting side of the example path can also be understood as the three-dimensional straight line corresponding to the straight line segment containing the first device. Similarly, in the example path, the straight line segment containing the second device is the line connecting the scatterer and the second device as its two endpoints, and the corresponding three-dimensional straight line on the receiving side of the example path can also be understood as the three-dimensional straight line corresponding to the straight line segment containing the second device. In the following text, for ease of description, the three-dimensional straight line on the transmitting side can also be referred to as the transmitting side straight line, and the three-dimensional straight line on the receiving side can also be referred to as the receiving side straight line.

[0132] Understandably, different paths correspond to different transmitting and / or receiving straight lines. The transmitting straight line for each path is uniquely determined based on the location of the transmitting device and the departure angle of that path, and the receiving straight line for each path is uniquely determined based on the location of the receiving device and the arrival angle of that path. The departure angle can be understood as the direction from which the signal originates from the transmitting device, and the receiving angle can be understood as the direction from which the signal arrives at the receiving device. The departure angle includes the azimuth angle of departure (AoD) and the zenith angle of departure (ZoD), while the arrival angle includes the azimuth angle of arrival (AoA) and the zenith angle of arrival (ZoA). The departure angle can also be called the departure angle or transmitting angle, and the arrival angle can also be called the receiving angle. The zenith angle can also be called the pitch angle or vertical angle.

[0133] For example, such as Figure 4 As shown, taking the path sequentially through the first device, the sensing target, the scatterer, and the second device as an example, the starting angle of this path is the direction from which the signal is emitted from the first device. Figure 4 In this context, θ1 can represent the AoD (Area of ​​Distance) included by the departure angle, and θ2 can represent the ZoD (ZoD) included by the departure angle; correspondingly, the arrival angle of the path is the direction in which the signal reaches the second device. Figure 4 In this context, θ3 can represent the area AoA included in the arrival angle, and θ4 can represent the area ZoA included in the arrival angle.

[0134] For example, Figure 4 The values ​​θ1 and θ2 shown are obtained in a local coordinate system with the position of the first device as the origin. Figure 4 θ3 and θ4 shown are obtained in a local coordinate system with the location of the second device as the origin. When the first device determines the transmitting side straight line, it needs to perform a transformation from the local coordinate system to the global coordinate system based on the coordinates of the first device in the global coordinate system. Similarly, when the second device determines the receiving side straight line, it also performs a transformation from the local coordinate system to the global coordinate system based on the coordinates of the second device in the global coordinate system.

[0135] When a path is a Loss-of-Sight (LoS) path for a sensed target, the corresponding transmitting-side line and receiving-side line should intersect, and the intersection point is precisely the location of the sensed target. Therefore, the LoS information of each path can be determined by judging whether the corresponding transmitting-side line and receiving-side line intersect, i.e., whether the path is a LoS path, a non-LoS path, or the probability that the path is a LoS path. Since the location of the transmitting device is unknown to the receiving device, the receiving device cannot directly determine the transmitting-side line of each path. Therefore, this application embodiment proposes to indicate N transmitting-side three-dimensional lines to the receiving device through first information.

[0136] As an example, N three-dimensional straight lines can be understood as N transmitting-side straight lines as described above. For example... Figure 4 As shown, N=1, that is Figure 4 This includes a transmitting-side straight line, which is the line connecting the first device and the sensing target. It can be understood that... Figure 4 In the sensing channel between the first device and the second device, there are two paths: first device-sensing target-second device and first device-sensing target-scatterer-second device. Since the two paths correspond to the same starting angle, they also correspond to the same transmitting-side straight line.

[0137] In this embodiment of the application, the first information can indicate any one of the N transmitting side lines in a two-point, point-to-point, or general manner.

[0138] S320, the second device receives the reference signal. Correspondingly, the first device sends the reference signal. This reference signal is used to determine M three-dimensional straight lines, where M is a positive integer.

[0139] Optionally, the first device in S320 and the first device in S310 can be the same or different first devices.

[0140] As an example, the first device in S310 is designated as first device #1, and first device #1 is used to send the aforementioned first information. The first device in S320 is designated as first device #2, and first device #2 is used to send a reference signal. First device #1 and first device #2 can be the same or different first devices.

[0141] Specifically, the first device #2 can be used to send sensing signals. That is, the first device #2 can be the sending device mentioned above. The name of the device is not limited in this application embodiment, as long as it can perform the function.

[0142] For example, the first device #1 can be an SF (Small Surface Unit), and the first device #2 can be a network device; or, the first device #1 and the first device #2 can both be network devices, etc.

[0143] As an example, the reference signal can be a signal used to sense the target, that is, the reference signal can be the sensing signal mentioned above. The embodiments of this application do not limit its name, as long as it can achieve the function.

[0144] It is understood that in S320 of this application embodiment, the first device #1 and the first device #2 are collectively referred to as the first device, but it does not limit the first device #1 and the first device #2 to be the same device.

[0145] Optionally, the method further includes: a second device determining M three-dimensional straight lines based on the received reference signal.

[0146] As an example, the second device can determine M three-dimensional straight lines based on reference signals in the following way:

[0147] In step #A1, the second device can determine the arrival angles of P paths based on the reference signal. Alternatively, the reference signal can be used to determine the arrival angles of P paths, where P is a positive integer.

[0148] As an example, P paths can be understood as P paths existing in the sensing channels of the first device and the second device, or in other words, the reference signal sent by the first device reaches the second device via P paths, and these P paths also pass through the sensing target. As mentioned earlier, the influence of paths that do not pass through the sensing target can be eliminated by background cancellation or static component cancellation methods. In this embodiment, the path can refer to a path that passes through the sensing target. It is understood that there may be multiple sensing targets between the first device and the second device, and different paths in the P paths may pass through the same sensing target or different sensing targets. Figure 4 As shown, Figure 4 In the case of P=2, the target sensing channel between the first device and the second device includes two paths: first device-target-second device and first device-target-scatterer-second device.

[0149] As an example, the second device can estimate the angles of arrival (AAs) of P paths based on the received reference signal, or in other words, estimate the AAs information of P paths. For instance, by converting the received reference signal to the time-delay-angle domain, the second device can observe one or more peaks. Each peak can be considered an estimated path, and the angle corresponding to that peak is the AAs of that path, while the time delay position corresponding to that peak is the time delay of that path. The number of peaks is the value of P. Any two paths in the P paths may have different time delays, or any two paths may have different AAs.

[0150] In step #A2, the second device can determine M three-dimensional straight lines based on its coordinates and the arrival angles of the P paths. Alternatively, the arrival angles of the P paths and the coordinates of the second device are used to determine the M three-dimensional straight lines. These M three-dimensional straight lines can also be referred to as M receiving-side straight lines.

[0151] As one possibility, the arrival angles of any two paths in the P paths can be the same or different. Therefore, the arrival angles of any two paths in the P paths can determine the same receiving-side straight line or different receiving-side straight lines.

[0152] It is understandable that P is greater than or equal to M. If the arrival angles of any two paths in the P paths are not the same, different paths in the P paths can determine different receiving-side straight lines, and in this case, P equals M; if there is a path in the P paths whose arrival angle is the same as the arrival angle of one path in the other P-1 paths, then the receiving-side straight lines determined by the paths with the same arrival angle are also the same, and in this case, P is greater than M.

[0153] Similarly, the starting angles of any two paths in the P paths can be the same or different. Therefore, the starting angles of any two paths in the P paths can determine the same transmitting side straight line or different transmitting side straight lines.

[0154] It is understandable that P is greater than or equal to N. If the starting angles of any two paths in the P paths are not the same, different paths in the P paths can determine different transmitting side lines, and P equals N; if there is a path in the P paths with the same starting angle as a path in the other P-1 paths, then the transmitting side lines determined by the paths with the same starting angle are also the same, and P is greater than N.

[0155] As an example, the method for determining a three-dimensional straight line based on the coordinates of a point in three-dimensional space and an angle can refer to the point-direction method in S310. The second device can optionally determine M three-dimensional straight lines using this method.

[0156] For example, please continue to see Figure 4 , Figure 4 In the case of M=2, that is Figure 4 The diagram includes two receiving-side straight lines, referred to as receiving-side straight line #1 and receiving-side straight line #2, which correspond to the straight line segment from the sensing target to the second device and the straight line segment from the scatterer to the second device, respectively.

[0157] See Figure 5 As an example, Figure 5 This is another schematic diagram of the transmitting side line and the receiving side line provided in the embodiments of this application. Figure 5 In the case of M=1, that is Figure 5 This includes a receiving-side straight line, which is the line connecting the sensing target and the second device. It can be understood that... Figure 5 In the sensing channel between the first and second devices, there are two paths, i.e., P=2. These two paths are... Figure 5 The paths are labeled as follows: First device - Sensing target - Second device and First device - Scatterer - Sensing target - Second device. Since both paths correspond to the same receiving angle, they also correspond to the same receiving-side straight line. Although these two paths correspond to the same receiving angle, their corresponding time delays are different. Therefore, after the second device converts the received reference signal to the time delay-angle domain, two peaks can be observed. These two peaks correspond to the same angle but different time delays.

[0158] See Figure 6 As an example, Figure 6 This is another schematic diagram of the transmitting side line and the receiving side line provided in the embodiments of this application. Figure 6 In the case of M=2, that is Figure 6 This includes two receiving-side straight lines, namely receiving-side straight line #1 and receiving-side straight line #2, corresponding to the straight line segment from the sensing target to the second device, and the straight line segment from the scatterer #2 to the second device, respectively. This can be understood as... Figure 6 In the sensing channel between the first and second devices, there are 4 paths, i.e., P=4. These 4 paths are in Figure 6 The paths are: First Device - Sensing Target - Second Device, First Device - Scatterer #1 - Sensing Target - Second Device, First Device - Sensing Target - Scatterer #2 - Second Device, and First Device - Scatterer #1 - Sensing Target - Scatterer #2 - Second Device. These four paths can be denoted as Path #1 to Path #4. Because Path #1 and Path #2 have the same receiving angle, and Path #3 and Path #4 have the same receiving angle, the four paths determine two straight lines on the receiving side.

[0159] In this embodiment of the application, the reference signal is used to determine M three-dimensional straight lines. Specifically, the second device can determine the arrival angles of P paths based on the reference signal, and then determine the M receiving-side straight lines based on the coordinates of the second device and the arrival angles of the P paths.

[0160] N and M three-dimensional straight lines can be used to determine the line-of-sight (LoS) information for P paths.

[0161] Optionally, method 300 further includes: S330, the second device determines the Loss information of P paths based on N three-dimensional straight lines and M three-dimensional straight lines.

[0162] Specifically, the second device can determine P groups of interrelated straight lines through the association relationship. Each group of interrelated straight lines includes two three-dimensional straight lines, which come from N three-dimensional straight lines and M three-dimensional straight lines respectively. The P groups of interrelated straight lines correspond to the aforementioned P paths.

[0163] It should be understood that the method for the second device to determine the interrelated straight lines of group P through the association relationship can be referred to the specific examples in Example 1 and Example 2 below. For the sake of readability of the specification, the embodiments of this application will not be elaborated here.

[0164] As an example, the LosS information of a path can also be referred to as the LosS status of a path, and its name does not limit the scope of protection of the embodiments of this application. For example, the LosS information of a path can refer to whether the path is a LosS path, or the probability that the path is a LosS path, etc.

[0165] As an example, the P paths may include a first path. The following text uses one of the P paths as an example to illustrate the method by which the second device determines the Loss information of the path.

[0166] As an example, the first path is associated with the first straight line and the second straight line. It can also be replaced with: the straight line segment of the first path containing the first device coincides with the first straight line, the straight line segment of the first path containing the second device coincides with the second straight line, and both the first straight line and the second straight line are the three-dimensional straight lines described above.

[0167] As an example, the second device determines the Loss of Sight (LoS) information of the first path based on the first straight line and the second straight line. Alternatively, the LoS information of the first path is determined based on the first straight line and the second straight line. Here, the first straight line and the second straight line are related; the first straight line belongs to N three-dimensional straight lines, and the second straight line belongs to M three-dimensional straight lines.

[0168] As an example, the Loss information of the first path is determined based on the first straight line and the second straight line. It can also be understood that the Loss information of any path among the P paths can be determined by one of the N three-dimensional straight lines and one of the M three-dimensional straight lines, or in other words, it can be determined by one transmitting-side straight line and one receiving-side straight line.

[0169] As an example, the first line and the second line are related, which can also be replaced by the first line and the second line forming a group of related lines in the P groups of related lines mentioned above.

[0170] As an example, the Loss information of the first path can be determined based on the distance between the first straight line and the second straight line.

[0171] Specifically, the direction vectors of the first and second lines can be represented as follows: and It is the direction vector of the line connecting any point on two straight lines, and is perpendicular to it. and The vector representation is The distance between the first line and the second line is

[0172] For example, ideally, the second device can identify whether a path is a Loss-of-Sight (LoS) path or an Non-LoS (NLoS) path (ghost path) for the target based on whether the transmitting-side and receiving-side three-dimensional straight lines intersect. As mentioned earlier, for a LoS path for the target, the path only takes one hop in space, and the transmitting-side and receiving-side straight lines intersect in space, with the intersection point being the location of the target. Correspondingly, for an NLoS path for the target, the path takes at least two hops in space. Figure 4 The first device, the sensing target, the scatterer, and the second device are not on the same plane, and the transmitting side line and the receiving side line do not intersect.

[0173] As an example, considering the above examples, in practical applications, taking into account measurement deviations or interference, the second device can determine whether the first path is a Loss path by whether the distance between the first straight line and the second straight line is less than or equal to a threshold, or the second device can determine the probability that the first path is a Loss path by the distance between the first straight line and the second straight line, etc. For specific implementation methods, please see Method 1 and Method 2 below.

[0174] In this embodiment, the second device can receive first information to determine N three-dimensional straight lines on the side of the first device that transmits the reference signal, and receive the reference signal to determine M three-dimensional straight lines on the side of the second device. Further, the second device can determine the Loss of Sight (LoS) information of P paths between the first and second devices based on the aforementioned N and M three-dimensional straight lines. For example, it can determine whether any one of the P paths is a LosS path, or determine the probability that any one of the P paths is a LosS path. Based on this, the second device can use the three-dimensional straight lines corresponding to the paths to assist in determining the LoS information of the paths, thereby eliminating ghosting targets caused by non-line-of-sight (NLoS) paths.

[0175] The following examples, using methods C1 and C2, illustrate how the second device, as described above, determines the LoS information of the first path based on the first straight line and the second straight line.

[0176] In method C1, if the distance between the first straight line and the second straight line is less than or equal to a second threshold, the second device determines the first path as a Loss path; if the distance between the first straight line and the second straight line is greater than the second threshold, the first path is determined as an NLoS path.

[0177] Optionally, the second threshold may be indicated by the first information mentioned above, or the second threshold may be indicated by information #A, where information #A and the first information are different information, or the second threshold may be determined by the second device itself, or the second threshold may be predefined. This application embodiment does not limit the scope of the application.

[0178] For example, please continue to refer to Figure 4 Assuming the transmitting side line and the receiving side line #1 determine the Loss information of the first path #1, and the transmitting side line and the receiving side line #2 determine the Loss information of the first path #2, and the second threshold is equal to 1 cm. If the distance between the transmitting side line and the receiving side line #1 is equal to 0.5 cm, and the distance between the transmitting side line and the receiving side line #2 is equal to 5 cm, then the second device determines the first path #1 as a Loss path, and correspondingly, the second device determines the first path #2 as an NLoS path.

[0179] In this embodiment, the second device can determine whether the first path is a Loss-of-Stake (LoS) path by measuring the distance between the first straight line and the second straight line. For example, the second device can compare the distance between the first straight line and the second straight line with a second threshold to determine whether the first path is a LoS path.

[0180] In method C2, the Loss information of the first path is the probability that the first path is a Loss path, and the probability that the first path is a Loss path is inversely proportional to the distance between the first straight line and the second straight line.

[0181] As an example, the probability that the first path is a Loss path is inversely proportional to the distance between the first line and the second line. This can be understood as follows: the greater the distance between the first line and the second line, the lower the probability that the first path is a Loss path; the smaller the distance between the first line and the second line, the higher the probability that the first path is a Loss path.

[0182] As an example, the probability that the first path is a Loss path is: K is the proportionality coefficient.

[0183] For example, please continue to refer to Figure 4 Assume that the transmitting side line and the receiving side line #1 determine the Loss Information of the first path #1, and the transmitting side line and the receiving side line #2 determine the Loss Information of the first path #2, with K = 2.2. If the distance between the transmitting side line and the receiving side line #1 is 0.5cm, and the distance between the transmitting side line and the receiving side line #2 is 5cm, then the probability that the second device determines the first path #1 as a Loss path is 0.91, and correspondingly, the probability that the second device determines the first path #2 as a Loss path is 0.09.

[0184] In this embodiment, the second device can determine the probability that the first path is a Loss-of-Stake (LoS) path by the distance between the first straight line and the second straight line. For example, the probability that the first path is a LoS path can be inversely proportional to the distance between the first straight line and the second straight line.

[0185] Optionally, the second device itself can perform subsequent processing based on the LoS information of the P paths.

[0186] Optionally, the second device may report information about all or part of the P paths to the first device.

[0187] Optionally, the first device for receiving path information and the first device described above may be the same or different first devices.

[0188] As an example, the first device receiving the path information is designated as first device #3. First device #3 and the first device #1 or first device #2 mentioned above can be the same or different first devices.

[0189] It is understood that the first device #3 will be referred to as the first device in the following text, but it does not limit the first device #3 to be the same device as the first device #1 or the first device #2 mentioned above.

[0190] Optionally, method 300 further includes: S340, the second device reports information about all or part of the P paths. Optionally, the first device receives information about all or part of the P paths. The path information may include path delay, Doppler, angle, or power information, etc.

[0191] The following examples, using methods D1 to D3, illustrate the implementation of S340.

[0192] Method D1:

[0193] Step #D1-1: The second device determines K paths out of P paths as Loss paths.

[0194] As an example, the previous text used a first path out of P paths as an example to introduce a method for determining whether a first path is a Loss-of-Stake (LoS) path by using the first and second straight lines associated with the first path. Further, a second device can apply this method to each of the P paths to determine K paths out of the P paths as LoS paths, and correspondingly, determine PK paths out of the P paths as NLoS paths.

[0195] For example, referring to the example in method C1 above, where P=2 and K=1, the second device can determine one path (first path #1) as the Loss path.

[0196] In step #D1-2, the second device sends second information. Correspondingly, the first device receives this second information. This second information indicates the information for the aforementioned K paths.

[0197] In this embodiment of the application, the second device can report information on K Loss paths out of P paths.

[0198] Method D2:

[0199] Step #D2-1: The second device determines K paths out of P paths, and the probability that these K paths are Loss paths is greater than or equal to a third threshold.

[0200] Optionally, the third threshold may be indicated by the first information mentioned above, or the third threshold may be indicated by information #B, where information #B and the first information are different information, or the third threshold may be determined by the second device itself, or the third threshold may be predefined. This application embodiment does not limit the specific information.

[0201] As an example, the previous text used a first path out of P paths as an example to introduce a method for determining the probability that the first path is a Loss-of-Stake (LoS) path by using the first and second straight lines associated with the first path. Further, a second device can apply this method to each of the P paths to determine the probability that each of the P paths is a LoS path, and further determine that the probability that K paths out of the P paths are LoS paths is greater than or equal to a third threshold. Correspondingly, the probability that PK paths out of the P paths are LoS paths is less than the third threshold.

[0202] For example, referring to the example in method C2 above, where P=2, K=1, assuming the third threshold is equal to 0.8, the second device can determine one path (first path #1), which has a probability of being a Loss path greater than or equal to the third threshold.

[0203] It is understandable that comparing the probability of a path being a Loss path with the third threshold is an optional step for the second device. Step #D2-1 can also be replaced by the second device determining the K paths with the highest probability of being Loss paths among the P paths.

[0204] Optionally, the value of K can be indicated by the first information mentioned above, or the value of K can be indicated by information #C, where information #C and the first information are different information, or the value of K can be determined by the second device itself, or the value of K can be predefined. This application embodiment does not limit the value of K.

[0205] In step #D2-2, the second device sends the second information. Correspondingly, the first device receives this second information. This second information indicates information about the K paths.

[0206] In this embodiment of the application, the second device can report information on K paths out of P paths, where the probability that the K paths are Loss-of-Stake (LoS) paths is greater than or equal to a threshold.

[0207] Method D3:

[0208] In step #D3-1, the second device sends second information. Correspondingly, the first device receives this second information. The second information indicates information about P paths and P first values.

[0209] As an example, the first value can indicate the Loss information of the corresponding path. The first value can also be called a Loss information indicator, or a Loss-NLoS indicator, or a Loss-NLoS Indicator, etc. The name does not limit the scope of protection of the embodiments of this application.

[0210] As one possible implementation, the P first values ​​indicate whether the P paths are Loss paths. The method for the second device to determine whether the P paths are Loss paths can be found above.

[0211] As an example, the second device can indicate that the corresponding path is a Loss path by setting the first value to 1, and indicate that the corresponding path is an NLoS path by setting the first value to 0; or, the second device can indicate that the corresponding path is a Loss path by setting the first value to 0, and indicate that the corresponding path is an NLoS path by setting the first value to 1.

[0212] For example, please continue to see Figure 4Based on the examples in methods C1 and D1 above, the second device can report information about the first path #1 and the first path #2, and report that the first value #1 corresponding to the first path #1 is equal to 1, to indicate that the first path #1 is a LosS path; and report that the first value #2 corresponding to the first path #2 is equal to 0, to indicate that the first path #2 is an NLoS path.

[0213] As another possible implementation, the P first values ​​indicate the probability that each of the P paths is a Loss path. The method by which the second device determines the probability that each of the P paths is a Loss path can be found above.

[0214] As an example, the second device can use a soft probability value in the range of 0 to 1, such as {0,0.1,0.2,…,0.9,1}, to indicate the probability that the corresponding path is a Loss path.

[0215] For example, please continue to see Figure 4 Based on the examples in methods C2 and D2 above, the second device can report information about the first path #1 and the first path #2, and report the first value #3 corresponding to the first path #1 equals 0.9, to indicate that the soft probability of the first path #1 being a Loss path is 0.9; and report the first value #2 corresponding to the first path #2 equals 0.1, to indicate that the soft probability of the first path #2 being a Loss path is 0.1.

[0216] Optionally, before the second device reports the path information, the first device may indicate the desired reporting method to the second device. For example, the first device may indicate any one or more of the reporting methods D1 to D3 described above to the second device.

[0217] In this embodiment of the application, the second device can report information on P paths and indicate whether each of the P paths is a Loss-of-Stake (LoS) path or the probability of it being a LoS path.

[0218] The following examples, 1 and 2, illustrate two specific cases of the relationship between the first and second lines mentioned above.

[0219] As one possible implementation, the first information is also used to indicate N resource locations and / or P first delays. The N resource locations correspond one-to-one with N three-dimensional lines, and each of the P first delays corresponds to one of the N three-dimensional lines.

[0220] As an example, the first and second straight lines mentioned above can be associated through the resource locations or time delays described above. In other words, the second device can find the transmitting and receiving straight lines associated with the same path by having the same resource locations or the same time delays.

[0221] Example 1: The first and second lines are associated through resource locations. Example 1 may include the following steps:

[0222] In step #E1, the second device receives the first information. Correspondingly, the first device sends the first information. The first information indicates N three-dimensional straight lines, where N is a positive integer.

[0223] It should be understood that the explanation of the first information indicating N three-dimensional straight lines can be found in section S310 above, and will not be repeated here in the embodiments of this application.

[0224] Furthermore, the first information is also used to indicate N resource locations, which can refer to the location of the reference signal resource, or the resource location where the first device transmits the reference signal, or the resource location where the second device receives the reference signal.

[0225] As an example, the first information indicates that N resource locations correspond one-to-one with N three-dimensional straight lines. This can also be understood as the first device indicating to the second device, through the first information, the three-dimensional straight lines associated with each of the multiple resource locations used for sensing.

[0226] For example, when N=3, the first device indicates to the second device via the first information that three-dimensional line #1 corresponds to resource location #1, three-dimensional line #2 corresponds to resource location #2, and three-dimensional line #3 corresponds to resource location #3. The correspondence between the three-dimensional lines and resource locations in the first information can be indicated by a table or other means, which is not limited in this embodiment.

[0227] Furthermore, the first device transmits reference signals, and the number of reference signals can be N. That is, the first device can transmit reference signals at N different resource locations using N beams in different directions.

[0228] See Figure 7 As an example, Figure 7 This is a schematic diagram illustrating different beams corresponding to different launch angles, provided in an embodiment of this application.

[0229] Understandable, such as Figure 7 As shown, the beam of the reference signal transmitted by the first device has a certain width, meaning that a transmission beam direction actually corresponds to a range of starting angles in space. The beam gain is greatest at the midpoint of this range. Therefore, a three-dimensional straight line associated with a resource location can be obtained based on the midpoint of the range of starting angles corresponding to the transmission beam at that resource location. The first device can traverse beams in different directions. The more transmission antennas there are, the narrower the beam becomes, and the more accurate the estimation of the starting angle of the true path can be.

[0230] As an example, in the technical solution of this application embodiment, the above-mentioned N resource locations and the above-mentioned N three-dimensional straight lines can be corresponded one-to-one in the following way: the N resource locations are used for the second device to receive the above-mentioned N reference signals, and the transmission beam direction of each of the N reference signals and the coordinates of the first device are used to determine one of the N three-dimensional straight lines.

[0231] For example, the direction of the transmission beam of the reference signal sent by the first device at resource location #4 is direction #1. Direction #1 and the coordinates of the first device can be used to determine one of the N three-dimensional straight lines, namely three-dimensional straight line #4, thereby corresponding resource location #4 with three-dimensional straight line #4.

[0232] In this embodiment of the application, the second device can receive N reference signals at N resource locations indicated by the first information. The transmission beam direction of each of the N reference signals and the coordinates of the first device can determine one of the N three-dimensional straight lines, thereby making a one-to-one correspondence between the N resource locations and the N three-dimensional straight lines.

[0233] The following describes several optional first and second devices in Example 1. The first device may further include: a first device #1 for transmitting first information and a first device #2 for transmitting a reference signal.

[0234] Optionally, the first device #1 and the first device #2 are the same or different network devices, and the second device is a terminal device. That is, the network device configures the reference signal resource locations for sensing to the terminal device and indicates the three-dimensional straight-line information corresponding to each resource location.

[0235] Optionally, the first device #1 is an SF, the first device #2 is a network device, and the second device is a terminal device.

[0236] Specifically, the network device sends the configured resource locations to the SF, and can also indicate the three-dimensional straight-line information corresponding to each resource location, or indicate the beam direction and coordinates of the network device corresponding to each resource location. Further, the SF indicates the reference signal resource locations for sensing to the terminal device, and indicates the three-dimensional straight-line information corresponding to each resource location.

[0237] Optionally, the first device is terminal device #1, and the second device is terminal device #2.

[0238] Among them, the network device or SF can indicate the location of reference signal resources for sensing to terminal device #1 and terminal device #2, and terminal device #1 indicates the three-dimensional straight line information corresponding to each resource location to terminal device #2.

[0239] In step #E2, the second device receives reference signals at different resource locations, determines M three-dimensional straight lines based on the reference signals, and determines the line-of-sight (LoS) information of P paths based on the N and M three-dimensional straight lines.

[0240] As an example, in Example 1, the number of reference signals can be N, and the second device can receive N reference signals at the N resource locations described in step #E1.

[0241] As an example, taking the first path out of P paths as an example, in Example 1, the first straight line and the second straight line associated with the first path can be associated in the following way: the first straight line corresponds to the first resource position among N resource positions, and the second straight line is determined based on the first reference signal among N reference signals, and the resource position used to receive the first reference signal is the first resource position.

[0242] For example, the first device indicates the first resource location corresponding to the first straight line #A through the first information, and the second device receives the first reference signal at the first resource location and determines the second straight line #A based on the first reference signal. Then the first straight line #A and the second straight line #A are associated. The second device can determine the Loss Information of a first path based on the first straight line #A and the second straight line #A.

[0243] As one possibility, different second lines can be associated with the same first line. Based on the first reference signal received by the second device at the first resource location corresponding to the first line #A, multiple paths may be determined, thereby identifying multiple second lines, such as second line #A1 and second line #A2. In this case, the first line #A and second line #A1 are associated, and the first line #A and second line #A2 are also associated. Please refer to [reference needed]. Figure 4 At the first resource location corresponding to the first straight line #A, the first device adopts Figure 4 The direction corresponding to the straight line on the transmitting side is taken as the direction of the transmitting beam, then the first straight line #A corresponds to Figure 4 The first reference signal transmitted from the first resource location reaches the second device via the first device-sensing target-second device and the first device-sensing target-scatterer-second device. Therefore, the second device can determine two paths based on the first reference signal, thereby determining two second straight lines. Figure 4 The receiving-side straight lines 1 and 2 shown are both aligned with... Figure 4 The sending side is shown as a linear association.

[0244] As another possibility, different first straight lines can also be associated with the same second straight line. For example, the second device determines path #A based on a first reference signal received at a first resource location corresponding to first straight line #A, and determines path #B based on a second reference signal received at a second resource location corresponding to first straight line #B. Path #A and path #B correspond to the same reception angle, and therefore correspond to the same second straight line. Please refer to... Figure 5 At the first resource location corresponding to the first straight line #A, the first device adopts Figure 5 The direction corresponding to line #1 on the transmitting side is taken as the direction of the transmitting beam, then the first line #A corresponds to... Figure 5 In the middle transmission side line #1, at the second resource position corresponding to the first line #B, the first device adopts Figure 5 The direction corresponding to line #2 on the transmitting side is taken as the direction of the transmitting beam, then the direction corresponding to line #B on the first line is... Figure 5 The transmitting side straight line #2. The second device, based on the first reference signal, can determine the path through the first device - sensing target - second device; based on the second reference signal, it can determine the path through the first device - scatterer - sensing target - second device. These two paths correspond to the same receiving angle, therefore they correspond to the same second straight line, i.e. Figure 5 The receiving-side straight line shown is consistent with... Figure 5 The transmitting side line #1 and transmitting side line #2 shown are associated. It should be understood that the method by which the second device determines the LoS information of the P paths based on the reference signal and the M three-dimensional lines can be referred to the relevant content in section S320 above, and will not be repeated in this embodiment.

[0245] In this embodiment of the application, the first straight line and the second straight line used to determine a path can be associated by corresponding to the same resource location. That is, the second device can find the first straight line and the second straight line used to determine a path by having the same corresponding resource location.

[0246] In step #E3, the second device reports information about all or part of the paths in the P paths to the first device.

[0247] It should be understood that the description of step #E3 can be found in the content of methods D1 to D3 in S340 above, and will not be repeated in the embodiments of this application.

[0248] Optionally, before the second device reports path information, the first device may indicate to the second device the number of paths reported at each resource location.

[0249] Example 2: The first and second lines are associated through path delay.

[0250] As an example, in Example 2, the first device and the second device can exchange reference signals, and each device estimates its own angle of arrival. Specifically, when the second device sends a reference signal to the first device, the angle of arrival estimated by the first device is the departure angle at which the first device sent the reference signal to the second device. In addition to estimating the angle of each path, the first and second devices can also estimate the time delay of each path.

[0251] See Figure 8 As an example, Figure 8 This is a schematic diagram illustrating the mutual transmission of reference signals between a first device and a second device, as provided in an embodiment of this application. Figure 8 As shown, the second device sends a reference signal #A to the first device. The first device can measure the arrival angle and time delay information of one or more sensing target paths from the second device to the first device based on the reference signal #A. The first device sends a reference signal #B to the second device. The second device can measure the arrival angle and time delay information of one or more sensing target paths from the first device to the second device based on the reference signal #B. In fact, the reference signal #A and the reference signal #B propagate through the same path.

[0252] For example, suppose there are two target sensing paths between the first device and the second device. Reference signal #A is transmitted from the second device to the first device via {path #A1, path #A2}, and reference signal #B is transmitted from the first device to the second device via {path #B1, path #B2}. Here, path #A1 and path #B1 are the same propagation path, and path #A2 and path #B2 are the same propagation path. Then, the arrival angle of path #A1 measured by the first device is also the departure angle of path #B1, and the arrival angle of path #A2 measured by the first device is also the departure angle of path #B2. Correspondingly, the arrival angle of path #B1 measured by the second device is also the departure angle of path #A1, and the arrival angle of path #B2 measured by the second device is also the departure angle of path #A2. Furthermore, since the paths are the same, the delay of path #A1 measured by the first device is the same as the delay of path #A2 measured by the second device, and the delay of path #A2 measured by the first device is the same as the delay of path #A1 measured by the second device. Therefore, the transmitting and receiving lines corresponding to the same path can be associated through the delay.

[0253] Example 2 may include the following steps:

[0254] In step #F1, the first device receives reference signal #A at resource location #A. Correspondingly, the second device transmits reference signal #A at resource location #A.

[0255] As an example, the first device can estimate the arrival angles and time delays of P paths based on the received reference signal. For instance, the first device can convert the received signal to the time delay-angle domain to obtain one or more peaks, each of which can be regarded as an estimated path, and the angle and time delay position corresponding to the peak corresponds to the arrival angle and time delay of that path.

[0256] Furthermore, the first device can determine N three-dimensional straight lines of the path on the side of the first device based on the coordinates of the first device and the arrival angle of each path.

[0257] In step #F2, the second device receives the first information. Correspondingly, the first device sends the first information. This first information indicates N three-dimensional straight lines.

[0258] It should be understood that the explanation of the first information indicating N three-dimensional straight lines can be found in section S310 above, and will not be repeated here in the embodiments of this application.

[0259] Furthermore, the first information is also used to indicate P first delays. For example, the P first delays are the delays of P paths estimated by the first device based on the reference signal. The delay can refer to an absolute delay or a relative delay. For example, the delay can refer to the delay of each path relative to the first path, or it can refer to the index of each path in the delay domain. Each of the P first delays corresponds to one of the N three-dimensional straight lines.

[0260] For example, please continue to see Figure 6 , Figure 6 Given N=2 and P=4, this is for... Figure 6 In the path #1 to path #4, the time delay and angle estimated by the first device for path #1 to path #4 correspond to the first time delay #1 to first time delay #4 and angle #1 to angle #4, respectively. Since the angle #1 of path #1 is the same as the angle #3 of path #3, path #1 and path #3 correspond to the same three-dimensional straight line, that is... Figure 6 The transmitting side line #1 is shown in the diagram. Similarly, since the angle #2 of path #2 and the angle #4 of path #4 are the same, paths #2 and #4 correspond to the same three-dimensional straight line, that is... Figure 6 The transmitting side line #2 is shown in the diagram. Therefore, the first device indicates to the second device that the first delay #1 corresponds to the transmitting side line #1, the first delay #2 corresponds to the transmitting side line #2, the first delay #3 corresponds to the transmitting side line #1, and the first delay #4 corresponds to the transmitting side line #2.

[0261] Optionally, the correspondence between the P first time delays and the N three-dimensional straight lines in the first information can be indicated by a table or other means, which is not limited in the embodiments of this application.

[0262] As an example, in the technical solution of this application embodiment, each of the above P first delays can correspond to one of the N three-dimensional straight lines in the following way: the reference signal received by the first device is used to determine the delay and arrival angle of the P paths, the P first delay is the delay of the P paths, and the arrival angle of each of the P paths and the coordinates of the first device are used to determine one of the N three-dimensional straight lines.

[0263] For example, the first device determines path #A based on the reference signal received in step #F1. Path #A corresponds to time delay #5 and angle #5. Angle #5 and the coordinates of the first device can be used to determine one of the N three-dimensional straight lines #5, thereby mapping time delay #5 to three-dimensional straight line #5.

[0264] It is understandable that among the P paths determined by the first device, there may be two paths with the same angle. Based on the same angle, the same three-dimensional straight line can be determined. Therefore, among the P first delays, there may be multiple first delays corresponding to the same three-dimensional straight line among the N three-dimensional straight lines.

[0265] Optionally, the first information can also indicate the power of each path.

[0266] In step #F3, the first device transmits reference signal #B at resource location #B. Correspondingly, the second device receives reference signal #B at resource location #B, determines M three-dimensional straight lines based on the reference signals, and determines the line-of-sight (LoS) information of P paths based on N and M three-dimensional straight lines.

[0267] As an example, in Example 2, the second device can determine P second delays based on the reference signal, or in other words, the reference signal can be used to determine P second delays, each of the P second delays corresponding to one of the M three-dimensional straight lines.

[0268] As an example, each of the P second delays can correspond to one of the M three-dimensional straight lines in the following way: the reference signal received by the second device is used to determine the delay and arrival angle of the P paths, the P second delays are the delays of the P paths, the arrival angle of each of the P paths and the coordinates of the second device are used to determine one of the M three-dimensional straight lines.

[0269] As an example, the second device can convert the received reference signal to the time-delay-angle domain and observe one or more peaks. Each peak can be considered as an estimated path, and the angle or time delay position corresponding to the peak is the arrival angle or time delay of the path.

[0270] For example, the second device determines path #B based on the reference signal received in step #F3. Path #B corresponds to time delay #6 and angle #6. Angle #6 and the coordinates of the second device can be used to determine one of the M three-dimensional straight lines #6, thereby mapping time delay #6 to three-dimensional straight line #6.

[0271] It is understandable that among the P paths determined by the second device, there may be two paths with the same angle. Based on the same angle, the same three-dimensional straight line can be determined. Therefore, among the P second time delays, there may be multiple second time delays corresponding to the same three-dimensional straight line among the M three-dimensional straight lines.

[0272] In this embodiment of the application, the second device can determine the time delay and arrival angle of P paths based on the reference signal. The time delay of the P paths is P second time delays. The arrival angle of each of the P paths and the coordinates of the second device can determine one of the M three-dimensional straight lines, thereby corresponding each of the P second time delays to one of the M three-dimensional straight lines.

[0273] As an example, taking the first path out of P paths as an example, in Example 2, the first straight line and the second straight line associated with the first path can be associated in the following way: the first straight line corresponds to the third delay in P first delays, the second straight line corresponds to the fourth delay in P second delays, the third delay and the fourth delay are equal, or the difference between the third delay and the fourth delay is less than or equal to the first threshold.

[0274] As an example, ideally, the paths for the first and second devices to exchange reference signals are the same, and the corresponding time delays are also the same. Considering the interference or errors in actual measurements, in this embodiment, a first threshold can be used to determine whether the difference between the third and fourth time delays is small enough, and to confirm that the paths corresponding to the third and fourth time delays with sufficiently small differences are the same.

[0275] Optionally, the first threshold may be indicated by the first information mentioned above, or the first threshold may be indicated by information #C, where information #C and the first information are different information, or the first threshold may be determined by the second device itself, or the first threshold may be predefined. This application embodiment does not limit the specific information.

[0276] For example, the size of the first threshold can be determined or configured based on the delay estimation error.

[0277] For example, the first device indicates the time delay #B corresponding to the first straight line #B through the first information. The second straight line #B is determined based on the coordinates and arrival angle #B of the second device. The arrival angle #B is the arrival angle of path #B, and the time delay of path #B is the time delay #C. Then, when the time delay #B equals the time delay #C, or when the difference between the time delay #B and the time delay #C is less than or equal to a first threshold, it can be determined that the first straight line #B and the second straight line #B are associated.

[0278] As an example, the relationship between the third delay and the fourth delay can also be understood as follows: the third delay is the delay with the smallest difference from the fourth delay among the P first delays, or the fourth delay is the delay with the smallest difference from the third delay among the P second delays.

[0279] As one possible scenario, N = M, meaning that the P first delays determined and indicated by the first device correspond one-to-one with the P second delays determined by the second device. It should be understood that the method by which the second device determines the LoS information of the P paths based on the reference signal and then determines the M three-dimensional straight lines can be found in the relevant content of section S320 above, and will not be repeated in this embodiment.

[0280] In this embodiment of the application, the first straight line and the second straight line used to determine a path can be associated by corresponding equal or similar time delays. That is, the second device can find the first straight line and the second straight line used to determine a path by corresponding equal or similar time delays.

[0281] In step #F4, the second device reports information about all or part of the paths in the P paths to the first device.

[0282] It should be understood that the explanation of step #F4 can be found in the content of methods D1 to D3 above, and will not be repeated in the embodiments of this application.

[0283] Optionally, the resource locations #A and #B mentioned above can be associated. For example, resource locations #A and #B may have the same bandwidth and / or period to ensure that the delay estimated based on reference signal #A and reference signal #B has a relatively consistent resolution; resource locations #A and #B may also be relatively close in time to ensure that the channel delay, synchronization error, etc. of the first and second devices do not change significantly.

[0284] The following describes several optional first and second devices in Example 2.

[0285] Optionally, the first device is a network device and the second device is a terminal device.

[0286] In this process, the network device can instruct the terminal device in advance to send reference signal #A at resource location #A and receive reference signal #B at resource location #B. In step #F4, the terminal device can report the measurement results to the network device.

[0287] Optionally, the first device is an SF (Small Forming Unit), and the second device is a terminal device.

[0288] In this process, the network device can indicate resource locations #A and #B to the terminal device via the SF. The network device will report the path delay measured based on reference signal #A and the corresponding three-dimensional straight line information for each delay, or the path delay, angle, and coordinates of the network device to the SF. In step #8B, the SF can indicate the path delay and the associated three-dimensional straight line information for each delay to the terminal device. In step #F4, the terminal device can report the measurement results to the SF.

[0289] Optionally, the first device is terminal device #1, and the second device is terminal device #2.

[0290] Among them, SF can indicate resource location #A and resource location #B to terminal device #1 and terminal device #2.

[0291] The above, combined with Figures 3 to 8 The methods provided in the embodiments of this application are described in detail below. Figures 9 to 11 The apparatus provided in the embodiments of this application is described in detail. It should be understood that the description of the apparatus embodiments corresponds to the description of the method embodiments. Therefore, for content not described in detail, please refer to the method embodiments above. For the sake of brevity, it will not be repeated here.

[0292] See Figure 9 As an example, Figure 9 This is a schematic diagram of a communication device 900 provided in an embodiment of this application. The communication device 900 includes a transceiver unit 910 and a processing unit 920. The transceiver unit 910 can be used to implement corresponding communication functions. The transceiver unit 910 can also be referred to as a communication interface or a communication unit. The processing unit 920 can be used to perform processing, such as determining information bits.

[0293] Optionally, the device 900 may further include a storage unit, which can be used to store instructions and / or data, and the processing unit 920 can read the instructions and / or data in the storage unit to enable the device to implement the aforementioned method embodiments.

[0294] In a first possible design, the device 900 can be the second device in the foregoing embodiments, which can implement the steps or processes corresponding to those performed by the second device in the above method embodiments. Specifically, the transceiver unit 910 can be used to perform transceiver-related operations (such as sending and / or receiving data or messages) of the second device in the above method embodiments, and the processing unit 920 can be used to perform processing-related operations of the second device in the above method embodiments, or operations other than transceiver (such as operations other than sending and / or receiving data or messages).

[0295] One possible implementation is that the transceiver unit 910 is used to receive first information, which indicates N three-dimensional straight lines; the transceiver unit 910 is also used to receive a reference signal, which is used to determine M three-dimensional straight lines, and the N three-dimensional straight lines and the M three-dimensional straight lines are used to determine the line-of-sight (LoS) information of P paths; wherein, the P paths include a first path, the LoS information of the first path is determined based on a first straight line and a second straight line, the first straight line and the second straight line are associated, the first straight line belongs to the N three-dimensional straight lines, the second straight line belongs to the M three-dimensional straight lines, and N, M and P are positive integers.

[0296] In a second possible design, the device 900 can be the first device in the aforementioned embodiments, which can implement the steps or processes corresponding to those performed by the first device in the above method embodiments. Specifically, the transceiver unit 910 can be used to perform transceiver-related operations (such as sending and / or receiving data or messages) of the first device in the above method embodiments, and the processing unit 920 can be used to perform processing-related operations of the first device in the above method embodiments, or operations other than transceiver (such as operations other than sending and / or receiving data or messages).

[0297] One possible implementation is that the transceiver unit 910 is used to send first information, which indicates N three-dimensional straight lines; the transceiver unit 910 is also used to send a reference signal, which is used to determine M three-dimensional straight lines, and the N three-dimensional straight lines and the M three-dimensional straight lines are used to determine the line-of-sight (LoS) information of P paths; wherein, the P paths include a first path, the LoS information of the first path is determined based on a first straight line and a second straight line, the first straight line and the second straight line are associated, the first straight line belongs to the N three-dimensional straight lines, the second straight line belongs to the M three-dimensional straight lines, and N, M and P are positive integers.

[0298] It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.

[0299] It should also be understood that the device 900 here is embodied in the form of a functional unit. The term "unit" here can refer to an application-specific integrated circuit (ASIC), electronic circuitry, a processor (e.g., a shared processor, a proprietary processor, or a group processor, etc.) and memory for executing one or more software or firmware programs, integrated logic circuitry, and / or other suitable components supporting the described functions. In an alternative example, those skilled in the art will understand that the device 900 can specifically be the communication device in the above embodiments, and can be used to execute the various processes and / or steps corresponding to the communication device in the above method embodiments; to avoid repetition, these will not be described again here.

[0300] The apparatus 900 of each of the above-described schemes has the function of implementing the corresponding steps performed by the communication device (such as the second device, or the first device) in the above-described methods. The function can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the transceiver unit can be replaced by a transceiver (e.g., the transmitting unit in the transceiver unit can be replaced by a transmitter, and the receiving unit in the transceiver unit can be replaced by a receiver), and other units, such as processing units, can be replaced by processors, each performing the transceiver operations and related processing operations in the respective method embodiments.

[0301] In addition, the transceiver unit 910 described above can also be a transceiver circuit (for example, it may include a receiving circuit and a transmitting circuit), and the processing unit can be a processing circuit.

[0302] It should be pointed out that, Figure 9 The device mentioned can be the communication device (such as the second device or the first device) in the foregoing embodiments, or it can be a chip or a chip system, such as a system on a chip (SoC). The transceiver unit can be an input / output circuit or a communication interface; the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip. No limitations are imposed here.

[0303] See Figure 10 As an example, Figure 10 This is a schematic diagram of another communication device 1000 provided in an embodiment of this application. The device 1000 includes a processor 1010, which is coupled to a memory 1020. The memory 1020 is used to store computer programs or instructions and / or data. The processor 1010 is used to execute the computer programs or instructions stored in the memory 1020, or to read the data stored in the memory 1020, in order to execute the methods in the above method embodiments.

[0304] Optionally, there may be one or more processors 1010.

[0305] Optionally, the memory 1020 may be one or more.

[0306] Alternatively, the memory 1020 can be integrated with the processor 1010, or it can be set separately.

[0307] Optionally, such as Figure 10 As shown, the device 1000 also includes a transceiver 1030, which is used for receiving and / or transmitting signals. For example, the processor 1010 is used to control the transceiver 1030 to receive and / or transmit signals.

[0308] As an example, processor 1010 may have Figure 9 The processing unit 920 shown has the function of a storage unit, the memory 1020 can have the function of a storage unit, and the transceiver 1030 can have the function of a storage unit. Figure 9 The function of the transceiver unit 910 shown is illustrated.

[0309] As one option, the device 1000 is used to implement the operations performed by a communication device (such as a second device, or a first device) in the various method embodiments described above.

[0310] For example, processor 1010 is used to execute computer programs or instructions stored in memory 1020 to implement the relevant operations of the communication device in the various method embodiments described above.

[0311] It should be understood that the processor mentioned in the embodiments of this application can be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor can be a microprocessor or any conventional processor.

[0312] It should also be understood that the memory mentioned in the embodiments of this application can be volatile memory and / or non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM). For example, RAM can be used as an external cache. By way of example and not limitation, RAM includes the following forms: static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct rambus RAM (DR RAM).

[0313] It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component, the memory (storage module) can be integrated into the processor.

[0314] It should also be noted that the memory described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0315] See Figure 11 As an example, Figure 11 This is a schematic diagram of a chip system 1100 provided in an embodiment of this application. The chip system 1100 (or may also be referred to as a processing system) includes logic circuitry 1110 and an input / output interface 1120.

[0316] The logic circuit 1110 can be a processing circuit in the chip system 1100. The logic circuit 1110 can be coupled to a memory unit, calling instructions from the memory unit, enabling the chip system 1100 to implement the methods and functions of the embodiments of this application. The input / output interface 1120 can be an input / output circuit in the chip system 1100, outputting processed information from the chip system 1100, or inputting data or signaling information to be processed into the chip system 1100 for processing.

[0317] As one approach, the chip system 1100 is used to implement operations performed by a communication device (such as a second device, or a first device) in the various method embodiments described above.

[0318] For example, logic circuit 1110 is used to implement processing-related operations performed by a communication device (such as a second device or a first device) in the above method embodiments; input / output interface 1120 is used to implement sending and / or receiving-related operations performed by a communication device (such as a second device or a first device) in the above method embodiments.

[0319] This application also provides a computer-readable storage medium storing a computer program or instructions for implementing the methods executed by a communication device (such as a second device or a first device) in the above-described method embodiments. For example, when the computer program or instructions are run on the communication device, the communication device (such as the second device or the first device) executes the above-described methods (such as method 300).

[0320] This application also provides a computer program product comprising instructions that, when executed by a computer, implement the methods described above as performed by a communication device (such as a second device or a first device). For example, when the computer program or instructions are run on the communication device, the communication device (such as the second device or the first device) performs the methods described above (such as method 300).

[0321] This application also provides a communication system, which includes the second device and / or the first device described in the above embodiments. For example, the system includes... Figure 3 The second device and the first device in the embodiment.

[0322] The explanations and beneficial effects of the relevant contents in any of the devices provided above can be found in the corresponding method embodiments provided above, and will not be repeated here.

[0323] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, and the indirect coupling or communication connection of apparatus or units may be electrical, mechanical, or other forms.

[0324] 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. For example, the computer can be a personal computer, a server, or a first device, etc. 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 media can be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., DVDs), or semiconductor media (e.g., solid-state disks, SSDs). For example, the aforementioned available media include, but are not limited to, USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks, and other media capable of storing program code.

[0325] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A communication method characterized by comprising: include: Receive first information, which is used to indicate N three-dimensional straight lines; A reference signal is received, which is used to determine M three-dimensional straight lines. The N three-dimensional straight lines and the M three-dimensional straight lines are used to determine the line-of-sight (LoS) information of P paths. The P paths include a first path, the LoS information of which is determined based on a first straight line and a second straight line. The first straight line and the second straight line are associated. The first straight line belongs to the N three-dimensional straight lines, and the second straight line belongs to the M three-dimensional straight lines. N, M, and P are positive integers.

2. The method of claim 1, wherein, The first information is used to indicate N three-dimensional straight lines, including: the first information indicates the third straight line among the N three-dimensional straight lines by at least one of the following: The coordinates of the two reference points on the third straight line; The coordinates of a reference point on the third line and the direction vector of the third line; The parameters of the general equation of the third straight line.

3. The method according to claim 1 or 2, characterized in that, The first information is also used to indicate N resource locations and / or P first delays; wherein, the N resource locations correspond one-to-one with the N three-dimensional straight lines, and each of the P first delays corresponds to one of the N three-dimensional straight lines.

4. The method of claim 3, wherein, The number of reference signals is N, and the N resource locations correspond one-to-one with the N three-dimensional straight lines, including: The N resource locations are used to receive the N reference signals. The transmission beam direction of each of the N reference signals and the coordinates of the first device are used to determine one of the N three-dimensional straight lines. The first device is the device that transmits the N reference signals.

5. The method of claim 3, wherein, The number of reference signals is N, and the receiving of reference signals includes: The N reference signals are received at the N resource locations; The first straight line and the second straight line are associated, including: The first straight line corresponds to the first resource position among the N resource positions, and the second straight line is determined based on the first reference signal among the N reference signals. The resource position used to receive the first reference signal is the first resource position.

6. The method of claim 3, wherein, The reference signal is used to determine P second time delays, each of the P second time delays corresponding to one of the M three-dimensional straight lines, the first straight line and the second straight line being associated, including: The first straight line corresponds to the third delay among the P first delays, and the second straight line corresponds to the fourth delay among the P second delays. The third delay and the fourth delay are equal, or the difference between the third delay and the fourth delay is less than or equal to a first threshold.

7. The method of claim 6, wherein, The reference signal is used to determine P second time delays, each of the P second time delays corresponding to one of the M three-dimensional straight lines, including: The reference signal is used to determine the time delay and arrival angle of the P paths, the P second time delays are the time delays of the P paths, the arrival angle of each of the P paths and the coordinates of the second device are used to determine one of the M three-dimensional straight lines, and the second device is a device that receives the reference signal.

8. The method according to any one of claims 1 to 7, characterized in that, Applied to a second device, the method further includes: The arrival angles of the P paths are determined based on the reference signal, and the arrival angles include azimuth angle and vertical angle. The M three-dimensional straight lines are determined based on the coordinates of the second device and the arrival angles of the P paths.

9. The method according to any one of claims 1 to 8, characterized in that, The Loss Information (LoS) of the first path is determined based on the first straight line and the second straight line, including: If the distance between the first straight line and the second straight line is less than or equal to the second threshold, the first path is determined to be a Loss path; If the distance between the first straight line and the second straight line is greater than the second threshold, the first path is determined to be a non-line-of-sight (NLoS) path.

10. The method according to any one of claims 1 to 8, characterized in that, The Loss Information (LoS) of the first path is determined based on the first straight line and the second straight line, including: The Loss information of the first path is the probability that the first path is a Loss path, and the probability that the first path is a Loss path is inversely proportional to the distance between the first straight line and the second straight line.

11. The method according to any one of claims 1 to 10, characterized in that, Also includes: K of the P paths are identified as Loss-of-Stake (LoS) paths; Send a second message, which indicates information about the K paths.

12. The method according to any one of claims 1 to 10, characterized in that, Also includes: Identify K paths out of the P paths, where the probability that the K paths are Loss paths is greater than or equal to a third threshold. Send a second message, which indicates information about the K paths.

13. The method according to any one of claims 1 to 10, characterized in that, Also includes: Send a second message, which is used to indicate the information of the P paths and P first values, wherein the P first values ​​respectively indicate whether the P paths are Loss paths, or the P first values ​​respectively indicate the probability that the P paths are Loss paths.

14. A communication method, comprising: include: Send a first message, which is used to indicate N three-dimensional straight lines; A reference signal is sent, which is used to determine M three-dimensional straight lines. The N three-dimensional straight lines and the M three-dimensional straight lines are used to determine the line-of-sight (LoS) information of P paths. The P paths include a first path, the LoS information of which is determined based on a first straight line and a second straight line. The first straight line and the second straight line are associated. The first straight line belongs to the N three-dimensional straight lines, and the second straight line belongs to the M three-dimensional straight lines. N, M, and P are positive integers.

15. The method of claim 14, wherein, The first information is used to indicate N three-dimensional straight lines, including: the first information indicates the third straight line among the N three-dimensional straight lines by at least one of the following: The coordinates of the two reference points on the third straight line; The coordinates of a reference point on the third line and the direction vector of the third line; The parameters of the general equation of the third straight line.

16. The method according to claim 14 or 15, characterized in that The first information is also used to indicate N resource locations and / or P first delays; wherein, the N resource locations correspond one-to-one with the N three-dimensional straight lines, and each of the P first delays corresponds to one of the N three-dimensional straight lines.

17. The method of claim 16, wherein, The number of reference signals is N, and the N resource locations correspond one-to-one with the N three-dimensional straight lines, including: The N resource locations are used to receive the N reference signals. The transmission beam direction of each of the N reference signals and the coordinates of the first device are used to determine one of the N three-dimensional straight lines. The first device is the device that transmits the N reference signals.

18. The method of claim 16, wherein, The number of reference signals is N, and the transmission of reference signals includes: Send the N reference signals at the N resource locations; The first straight line and the second straight line are associated, including: The first straight line corresponds to the first resource position among the N resource positions, and the second straight line is determined based on the first reference signal among the N reference signals. The resource position used to send the first reference signal is the first resource position.

19. The method of claim 16, wherein, The reference signal is used to determine P second time delays, each of the P second time delays corresponding to one of the M three-dimensional straight lines, the first straight line and the second straight line being associated, including: The first straight line corresponds to the third delay among the P first delays, and the second straight line corresponds to the fourth delay among the P second delays. The third delay and the fourth delay are equal, or the difference between the third delay and the fourth delay is less than or equal to a first threshold.

20. The method of claim 19, wherein, The reference signal is used to determine P second time delays, each of the P second time delays corresponding to one of the M three-dimensional straight lines, including: The reference signal is used to determine the time delay and arrival angle of the P paths, the P second time delays are the time delays of the P paths, the arrival angle of each of the P paths and the coordinates of the second device are used to determine one of the M three-dimensional straight lines, and the second device is a device that receives the reference signal.

21. The method according to any one of claims 14 to 20, characterized in that, The reference signal is used to determine M three-dimensional straight lines, including: the reference signal is used to determine the arrival angles of the P paths, the arrival angles including azimuth angles and vertical angles; the arrival angles of the P paths and the coordinates of a second device are used to determine the M three-dimensional straight lines, the second device being a device that receives the reference signal.

22. The method of any one of claims 14 to 21, wherein, The Loss Information (LoS) of the first path is determined based on the first straight line and the second straight line, including: If the distance between the first straight line and the second straight line is less than or equal to the second threshold, the first path is a Loss-of-Stake (LoS) path. If the distance between the first straight line and the second straight line is greater than the second threshold, the first path is a non-line-of-sight (NLoS) path.

23. The method according to any one of claims 14 to 21, characterized in that, The Loss Information (LoS) of the first path is determined based on the first straight line and the second straight line, including: The Loss information of the first path is the probability that the first path is a Loss path, and the probability that the first path is a Loss path is inversely proportional to the distance between the first straight line and the second straight line.

24. The method according to any one of claims 14 to 23, characterized in that, Also includes: Receive second information, which is used to indicate information about K Loss paths in the P paths.

25. The method of any one of claims 14 to 23, wherein, Also includes: Receive second information, which indicates information about K paths out of the P paths, wherein the probability that the K paths are Loss paths is greater than or equal to a third threshold.

26. The method of any one of claims 14 to 23, wherein, Also includes: Receive second information, which is used to indicate the information of the P paths and P first values, wherein the P first values ​​respectively indicate whether the P paths are Loss paths, or the P first values ​​respectively indicate the probability that the P paths are Loss paths.

27. A communications device, characterized by It includes modules or units for performing the method according to any one of claims 1 to 13; or, it includes modules or units for performing the method according to any one of claims 14 to 26.

28. A communications device, characterized by The device includes a processor configured to cause the communication device to perform the method of any one of claims 1 to 13, or configured to cause the communication device to perform the method of any one of claims 14 to 26.

29. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program or instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 13, or cause the communication device to perform the method as described in any one of claims 14 to 26.

30. A computer program product, characterised in that, The computer program product includes a computer program or instructions that, when executed on a communication device, cause the communication device to perform the method as described in any one of claims 1 to 13, or cause the communication device to perform the method as described in any one of claims 14 to 26.

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