Wireless communication method, communication device and chip

Abstract

A wireless communication method and device, the method including a first terminal receiving a first type positioning reference signal (PRS) and a second type PRS, the first type PRS being transmitted by the first type device in an active emission manner and the second type PRS being transmitted by the second type device in a backscatter manner, the first type PRS and the second type PRS being used to determine location information of the first terminal.

Description

[Technical Field]

[0001] TECHNICAL FIELD Embodiments of the present application relate to the field of communications, and more particularly to wireless communication methods and devices. [Background technology]

[0002] In some scenarios, it has been considered to use ambient power (AMP) devices for positioning, but in actual deployments, the capabilities of AMP devices may vary, or there may be multiple types of AMP devices actually deployed. In this case, how to use AMP devices for accurate positioning is an issue that needs to be resolved as soon as possible. Summary of the Invention

[0003] The present application provides a wireless communication method and device, which can perform positioning based on active reflected PRS and backscattered PRS, and is advantageous in realizing low-cost and high-precision positioning.

[0004] In a first aspect, a wireless communication method is provided, the wireless communication method including a first terminal receiving a first type positioning reference signal (PRS) and a second type PRS, the first type PRS being transmitted by a first type device in an active emission manner, and the second type PRS being transmitted by a second type device in a backscatter manner, and the first type PRS and the second type PRS being used to determine location information of the first terminal.

[0005] In a second aspect, there is provided a method of wireless communication, the method of wireless communication including: a second type device transmitting a second type positioning reference signal (PRS) to a first terminal, the second type PRS being transmitted by the second type device in a backscattering manner, and the second type PRS being used to determine location information of the first terminal.

[0006] In a third aspect, there is provided a method of wireless communication, the method of wireless communication including: a first type device transmitting a first type positioning reference signal (PRS) to a first terminal, the first type PRS being transmitted by the first type device in an active emission manner, and the first type PRS being used to determine location information of the first terminal.

[0007] In a fourth aspect, a wireless communication method is provided, the wireless communication method including a third device receiving a fourth type positioning reference signal (PRS) and a fifth type PRS, the fourth type PRS being transmitted by a first terminal using an active emission method, and the fifth type PRS being transmitted by a second type device using a backscattering method, and determining location information of the first terminal based on the fourth type PRS and the fifth type PRS.

[0008] In a fifth aspect, there is provided a method of wireless communication, the method of wireless communication including: a first terminal transmitting a fourth type positioning reference signal (PRS) to a third device, the fourth type PRS being transmitted in an active launch manner, and the fourth type PRS being used to determine location information of the first terminal.

[0009] In a sixth aspect, there is provided a method of wireless communication, the method of wireless communication including: a second type device transmitting a fifth type positioning reference signal (PRS) to a third device, the fifth type PRS being transmitted in a backscattering manner, and the fifth type PRS being used to determine location information of a first terminal.

[0010] In a third aspect, there is provided a terminal device, which is used to perform the method of the above first aspect or each realization thereof.

[0011] Specifically, the terminal device includes a functional module used to perform the method in the above first aspect or each of its implementations.

[0012] In a fourth aspect, there is provided a network device, the network device being used to perform the method of the second aspect above or each realization thereof.

[0013] Specifically, the network device includes a functional module used to perform the method in the above second aspect or each of its implementations.

[0014] In a fifth aspect, there is provided a terminal device, the terminal device including a processor and a memory, the memory being used to store a computer program, and the processor being used to call and execute the computer program stored in the memory so as to perform the method of the first aspect or each of its implementations.

[0015] In a sixth aspect, there is provided a network device, the network device including a processor and a memory, the memory being used to store a computer program, and the processor being used to call and execute the computer program stored in the memory so as to perform the method of the second aspect or each implementation thereof.

[0016] In a seventh aspect, a chip is provided, the chip being used to implement the method in any one of the first and second aspects or each implementation thereof.

[0017] Specifically, the chip includes a processor, and the processor is used to call and execute a computer program from memory so as to cause a device to which the apparatus is attached to perform a method in any one of the first and second aspects or each of the implementation modes thereof.

[0018] In an eighth aspect, a computer-readable storage medium is provided, the computer-readable storage medium being used to store a computer program, the computer program causing a computer to execute a method in any one of the first to second aspects or each implementation thereof.

[0019] In a ninth aspect, there is provided a computer program product, the computer program product comprising computer program instructions, the computer program instructions causing a computer to perform a method of any one of the first to second aspects or each implementation thereof.

[0020] In a tenth aspect, there is provided a computer program which, when executed by a computer, causes the computer to carry out a method according to any one of the first and second aspects or their respective implementations.

[0021] With the above technical solution, the terminal waiting for positioning or other positioning entity (i.e., a third device) can perform positioning based on the active emission PRS and backscattering PRS, where the backscattering PRS may be transmitted from a backscattering AMP device, which has the advantages of low cost and maintenance-free. Therefore, performing positioning based on the active reflection PRS and backscattering PRS can realize low-cost and high-precision positioning. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a schematic diagram of a communication system architecture provided in an embodiment of the present application; [Figure 2] 1 is a schematic diagram of a zero power consumption communication system according to an example of the present application; [Figure 3] FIG. 1 is a diagram illustrating the principle of power harvesting according to one embodiment of the present application. [Figure 4] FIG. 1 is a diagram illustrating the principle of backscattering communication according to one embodiment of the present application. [Figure 5] FIG. 1 is a circuit principle diagram of resistive load modulation according to one embodiment of the present application. [Figure 6] 1 is a schematic diagram of a wireless communication method provided in an embodiment of the present application; [Figure 7] FIG. 2 is a schematic interaction diagram of a positioning scheme according to one embodiment of the present application; [Figure 8] FIG. 8 is a timing relationship diagram of signals according to the embodiment shown in FIG. 7. [Figure 9] 8 is a timing relationship diagram of other signals according to the embodiment shown in FIG. 7. [Figure 10] FIG. 8 is another timing relationship diagram of signals according to the embodiment shown in FIG. 7. [Figure 11] FIG. 2 is a schematic interaction diagram of a positioning scheme according to another embodiment of the present application; [Figure 12] FIG. 1 is a schematic diagram of another wireless communication method provided in an embodiment of the present application; [Figure 13] FIG. 2 is a schematic interaction diagram of a positioning scheme according to another embodiment of the present application; [Figure 14] FIG. 1 is a schematic block diagram of a communication device provided in an embodiment of the present application; [Figure 15] FIG. 10 is a schematic block diagram of another communication device provided in an embodiment of the present application. [Figure 16] FIG. 2 is a schematic block diagram of another communication device provided in an embodiment of the present application; [Figure 17] FIG. 2 is a schematic block diagram of another communication device provided in an embodiment of the present application; [Figure 18] FIG. 2 is a schematic block diagram of another communication device provided in an embodiment of the present application; [Figure 19] FIG. 2 is a schematic block diagram of another communication device provided in an embodiment of the present application; [Figure 20] FIG. 2 is a schematic block diagram of another communication device provided in an embodiment of the present application; [Figure 21] FIG. 1 is a schematic block diagram of a chip provided in an embodiment of the present application. [Figure 22] 1 is a schematic block diagram of a communication system provided in an embodiment of the present application; DETAILED DESCRIPTION OF THE INVENTION

[0023] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, but it is clear that the described embodiments are only some of the embodiments of the present application and do not represent all of the embodiments. All other embodiments that can be obtained by those skilled in the art without creative efforts fall within the scope of protection of the present application.

[0024] The technical solutions of the embodiments of the present application may be applied to, for example, a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) system, a General Packet Radio Service (GPRS), a Long Term Evolution (LTE) system, an Advanced Long Term Evolution (LTE-A) system, a New Radio (NR) system, an evolution of an NR system, an LTE-based access to unlicensed spectrum (LTE-U) system, an NR-based access to unlicensed spectrum (NR-U) system, a Non-Terrestrial Networks (NTN) system, a Universal Mobile Telecommunication System (UMTS), a Wireless Local Area Network (WLAN), a Wireless Fidelity (WFI) system, ... The present invention can be applied to various communication systems, such as Wi-Fi (Wireless Fidelity), 5th-Generation (5G) systems, cellular Internet of Things systems, cellular passive Internet of Things systems, or other communication systems.

[0025] Typically, traditional communication systems support a limited number of connections that are easy to implement. However, with the development of communication technology, mobile communication systems now support not only traditional communication but also other communication types, such as device-to-device (D2D) communication, machine-to-machine (M2M) communication, machine-type communication (MTC), vehicle-to-vehicle (V2V) communication, or vehicle-to-everything (V2X) communication, and the embodiments of the present application can also be applied to these communication systems.

[0026] As an option, the communication system in the embodiments of the present application can be applied to a Carrier Aggregation (CA) scenario, a Dual Connectivity (DC) scenario, or a Standalone (SA) network construction scenario.

[0027] Alternatively, the communication system in the embodiments of the present application may be applied to an unlicensed spectrum, which may be considered a shared spectrum, or the communication system in the embodiments of the present application may be applied to a licensed spectrum, which may be considered a non-shared spectrum.

[0028] The embodiments of the present application are described in conjunction with network devices and terminal devices, where a terminal device may also be referred to as a user device (User Equipment, UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user equipment.

[0029] In an embodiment of the present application, the network device may be a device for communicating with a mobile device, and the network device may be an access point (AP) in a WLAN, a base station (BTS) in a GSM or CDMA, a base station (NodeB, NB) in a WCDMA, an evolved base station (eNB or eNodeB) in LTE, a relay station or access point, an in-vehicle device, a wearable device, and a network device (gNB) in an NR network, a network device in the Cellular Internet of Things, a network device in the Cellular Passive Internet of Things, a network device in a future evolved PLMN network, or a network device in an NTN network, etc.

[0030] In embodiments of the present application, the network device may have mobile characteristics. For example, the network device may be a mobile device, by way of example and not limitation. Alternatively, the network device may be a satellite or a satellite station. For example, the satellite may be a low Earth orbit (LEO) satellite, a medium Earth orbit (MEO) satellite, a geostationary Earth orbit (GEO) satellite, a high elliptical orbit (HEO) satellite, or the like. Alternatively, the network device may be a base station installed at a location such as land or water.

[0031] In an embodiment of the present application, a network device can provide a service to a cell, and a terminal device communicates with the network device through transmission resources (e.g., frequency domain resources or spectrum resources) used by the cell. The cell may be a cell corresponding to the network device (e.g., a base station), and the cell may belong to a macro base station or a base station corresponding to a small cell. The small cell here may include a metro cell, a micro cell, a pico cell, a femto cell, etc. These small cells have characteristics of small coverage range and low transmission power, and are suitable for providing high-speed data transmission services.

[0032] The terminal device may be a station (ST) in a WLAN, a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA) device, a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next generation communication system (e.g., a terminal device in an NR network), or a terminal device in a future evolved Public Land Mobile Network (PLMN) network, a terminal device in the Cellular Internet of Things, a terminal device in the Cellular Passive Internet of Things, etc.

[0033] In embodiments of the present application, the terminal device may be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted, and may also be deployed on water (e.g., on a ship) or in the air (e.g., on an airplane, balloon, satellite, etc.).

[0034] In embodiments of the present application, the terminal device may be a mobile phone, a tablet, a computer with wireless transmission and reception capabilities, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0035] In the embodiments of the present application, the terminal device may be a wearable device, which is an example and not limited thereto. A wearable device, also referred to as a wearable smart device, is a general term for wearable devices developed by applying wearable technology to everyday clothing and implementing intelligent design, such as glasses, gloves, watches, clothing, and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. A wearable device is not simply a hardware device; it also achieves powerful functions through software support, data interaction, and cloud interaction. In a broad sense, a wearable smart device is a device that is fully functional, large in size, and can achieve full or partial functions independently of a smartphone, such as a smart watch or smart glasses. It also includes devices that focus on a specific type of application function and require use in combination with another device (e.g., a smartphone), such as various smart bands and smart jewelry that monitor vital signs.

[0036] 1 shows a communication system 100 applied to an embodiment of the present application. The communication system 100 may include a network device 110, which may be a device that communicates with terminal devices 120 (communication terminals, also called terminals). The network device 110 may provide communication coverage to a specific geographic area and may communicate with terminal devices located within the coverage area.

[0037] FIG. 1 exemplarily illustrates one network device and two terminal devices; alternatively, the communication system 100 may include multiple network devices, and the coverage range of each network device may include other numbers of terminal devices, and the embodiments of the present application are not limited thereto.

[0038] Optionally, the communication system 100 may further include other network entities such as a network controller, a mobility management entity, etc., although embodiments of the present application are not limited thereto.

[0039] It can be understood that a device having a communication function in a network / system according to an embodiment of the present application can be referred to as a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication device can include a network device 110 and a terminal device 120 having a communication function. The network device 110 and the terminal device 120 can be the specific devices described above, and detailed descriptions are omitted here. The communication device can also include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, and the embodiment of the present application is not limited thereto.

[0040] As can be understood, the terms "system" and "network" in this application can often be used interchangeably in this application. The term "and / or" in this application is used to describe the relationship between related objects and indicates that three types of relationships can exist. For example, "A and / or B" can indicate three cases: only A exists, A and B exist simultaneously, or only B exists. In addition, the symbol " / " in this application usually indicates that there is an "or" relationship between the related objects before and after it.

[0041] It is understandable that the "indication" referred to in the embodiments of the present application may be a direct indication, an indirect indication, or an indication of an association relationship. For example, A indicating B can represent that A directly indicates B, for example, B can be obtained by A, and A indirectly indicates B, or, for example, A indicates C, and B can be obtained by C, and there is an association relationship between A and B.

[0042] In describing the embodiments of the present application, the term "corresponding" may mean that there is a direct or indirect corresponding relationship between the two, or that there is an association relationship between the two, or may be a relationship such as "indicate" and "indicated," or "arrange" and "arranged."

[0043] In the embodiments of the present application, "predefined" can be realized by pre-storing a corresponding code or table in a device (including, for example, a terminal device and a network device), or by other methods that can indicate related information, and the present application is not limited to this specific implementation method. For example, "predefined" may mean being defined in a protocol.

[0044] In the embodiments of the present application, the above "protocol" may refer to a standard protocol in the communication field, and may include, for example, an LTE protocol, an NR protocol, and related protocols applied to future communication systems, and the present application is not limited thereto.

[0045] In order to facilitate understanding of the technical solutions of the embodiments of the present application, the related art of the present application will be described below.

[0046] 1. Zero-power communication

[0047] Important technologies for zero-power communication include power harvesting, backscattering communication and low-power technology.

[0048] As shown in FIG. 2, a typical zero-power communication system (e.g., an RFID system) includes a network device (e.g., a reader / writer in an RFID system) and a zero-power terminal (e.g., an electronic tag). The network device is used to transmit wireless energy supply signals and forward communication signals to the zero-power terminal and receive backscattered signals from the zero-power terminal. A basic zero-power terminal includes a power harvesting module, a backscattered communication module, and a low-power calculation module. In addition, the zero-power terminal further includes a memory or a sensor used to store some basic information (e.g., an item label) or sensing data such as environmental temperature and humidity.

[0049] For example, a power harvesting module can harvest energy carried by radio waves in space (shown in FIG. 2 are radio waves emitted by a network device) to power a low-power computing module in a zero-power terminal and realize backscattering communication. After obtaining the energy, the zero-power terminal can receive control commands from the network device and transmit data to the network device via backscattering based on the control commands. The transmitted data can be data stored by the zero-power terminal itself (e.g., product identity labels or pre-programmed information, such as the manufacturing date, brand, and manufacturer of a product). The zero-power terminal can also be equipped with various sensors, which can report the data collected by the sensors based on a zero-power mechanism.

[0050] The following describes important technologies in zero-power communication.

[0051] 1. Radio Frequency Power Harvesting

[0052] As shown in Figure 3, the radio frequency power harvesting module harvests spatial electromagnetic wave energy based on the principle of electromagnetic induction, and obtains the energy required to power the operation of a zero-power device, such as a low-power demodulation and modulation module, sensors, and memory readout. Therefore, a traditional battery is not required for a zero-power device.

[0053] 2. Backscattering

[0054] As shown in Figure 4, a zero-power terminal receives a carrier wave signal transmitted from a network device, modulates the carrier wave signal, loads the information to be transmitted, and then radiates the modulated signal from an antenna. This information transmission process is called backscatter communication. Backscatter and load modulation functions are inseparable. Load modulation adjusts and controls the circuit parameters of the zero-power terminal's oscillator circuit according to the beat of the data stream, thereby changing parameters such as the impedance of the zero-power terminal accordingly, thereby completing the modulation process. Load modulation techniques mainly include resistive load modulation and capacitive load modulation. In resistive load modulation, as shown in Figure 5, a resistor is connected in parallel to the load, and the resistor is turned on or off based on the control of the binary data stream. Turning the resistor on or off causes a change in the circuit voltage, thereby realizing amplitude shift keying (ASK), i.e., signal modulation and transmission are achieved by adjusting the amplitude of the backscatter signal from the zero-power terminal. Similarly, in capacitive load modulation, frequency shift keying (FSK) can be achieved by changing the circuit resonant frequency by turning a capacitor on and off. In other words, signal modulation and transmission can be achieved by adjusting the operating frequency of the backscattered signal of the zero-power terminal.

[0055] In this way, the zero-power terminal realizes the backscatter communication process by modulating the incoming wave signal with information using the load modulation method. (1) Since it does not actively emit signals, complex radio frequency links such as PAs and radio frequency filters are not required. (2) There is no need to actively generate a high-frequency signal, so no high-frequency crystal oscillator is required. (3) Backscatter communication allows terminal signal transmission without consuming the terminal's own energy. There is a significant advantage.

[0056] 3. Encoding technology

[0057] Data transmitted by zero-power devices can represent binary "1"s and "0"s using different types of codes. Radio frequency identification systems typically use one of the following encoding methods: non-return-to-zero (NRZ) encoding, Manchester encoding, unipolar return-to-zero encoding, differential binary phase (DBP) encoding, differential encoding, pulse interval encoding (PIE), bi-phase encoding (FMO), Miller encoding, etc. Generally, different encoding techniques employ different pulse signals to represent 0s and 1s.

[0058] Zero-power communication has significant advantages such as extremely low cost, zero power consumption, and small size, and can be widely applied to various industries, such as vertical industry logistics, smart warehouses, smart agriculture, energy and electricity, and industrial Internet, as well as personal applications such as smart wearables and smart homes.

[0059] In some scenarios, based on the energy source and usage manner of the zero-power consumption terminal, the zero-power consumption terminal can be classified into the following types:

[0060] 1. Passive zero power consumption terminal

[0061] A zero-power terminal (e.g., an electronic tag in an RFID system) does not need to have a built-in battery. When the zero-power terminal approaches a network device (e.g., a reader / writer in an RFID system), the zero-power terminal is within the near-field range formed by the antenna radiation of the network device. Therefore, the zero-power terminal antenna generates an induced current through electromagnetic induction, and the induced current drives the low-power chip circuit of the zero-power terminal. This realizes operations such as demodulation of the forward link signal and modulation of the reverse link (also called the reflection link) signal. For the backscatter link, the zero-power terminal transmits signals using the backscatter realization method.

[0062] As can be seen from this, a passive zero power consumption terminal does not require a built-in battery to operate either the forward link or the reverse link, and is a truly zero power consumption terminal.

[0063] Passive zero-power consumption terminals do not require batteries, and both the radio frequency circuitry and the baseband circuitry are very simple, eliminating the need for devices such as low-noise amplifiers (LNAs), power amplifiers (PAs), crystal oscillators, and analog-to-digital converters (ADCs). This offers many advantages, such as small size, light weight, very low cost, and long life.

[0064] 2. Semi-passive zero power consumption terminal

[0065] The semi-passive zero-power terminal itself does not have a conventional battery, but instead uses an RF power harvesting module to harvest radio wave energy and simultaneously stores the harvested energy in an energy storage unit (e.g., a capacitor). After the energy storage unit obtains energy, it can drive the low-power chip circuit of the zero-power terminal, which performs operations such as demodulation of the forward link signal and modulation of the reverse link signal. For the backscatter link, the zero-power terminal transmits signals using a backscattering method.

[0066] As can be seen, a semi-passive zero-power terminal does not require a built-in battery to operate either the forward link or the reverse link, and uses energy stored in a capacitor during operation. However, the energy comes from the radio wave energy harvested by the power harvesting module, making it a truly zero-power terminal.

[0067] Semi-passive zero power consumption terminals inherit many of the advantages of passive zero power consumption terminals, and therefore have many advantages such as small size, light weight, very low cost, and long life.

[0068] 3. Active zero power consumption devices

[0069] In some scenarios, the zero-power terminal used may be an active zero-power terminal, and this type of device may have a built-in battery. The battery is used to power the low-power chip circuit of the zero-power terminal. It performs operations such as demodulation of the forward link signal and modulation of the reverse link signal. However, for the backscattering link, the zero-power terminal transmits signals using a backscattering method. Therefore, the zero-power consumption of this type of device is mainly realized by the method in which the reverse link signal transmission does not require the terminal's own power and uses backscattering.

[0070] The active zero power consumption terminal has a built-in battery to power the RFID chip, so as to increase the read and write distance of the active zero power consumption terminal and improve communication reliability, and is therefore applicable to some scenarios where there are relatively high requirements for communication distance, read delay, etc.

[0071] In some scenarios, zero power consumption devices can be classified into the following types based on the type of transmitter:

[0072] 1) Zero-power devices based on backscatter (also known as backscatter ambient power (AMP) devices)

[0073] This type of zero-power device transmits reverse link data using the backscattering method. This type of zero-power device does not have an active transmitter that actively emits, but only a backscattering transmitter. Therefore, when this type of zero-power device transmits data, the network device needs to provide a carrier wave, and this type of zero-power device realizes data transmission by backscattering based on the carrier wave.

[0074] 2) Zero-power devices based on active transmitters (also called active-emitting AMP devices)

[0075] This type of zero power consumption device performs reverse link data transmission using an active transmitter with active emission capability, so when transmitting data, the zero power consumption device can transmit data using its own active transmitter and does not need a network device to provide a carrier wave. The active transmitter applied to the zero power consumption device may be, for example, an ultra-low power ASK or ultra-low power FSK transmitter, and when emitting a 100 uW signal, the total power consumption can be reduced to 400 to 600 uW.

[0076] 3) A zero-power device that simultaneously includes a backscatter transmitter and an active transmitter.

[0077] This type of zero power consumption device can support backscatter transmitters and can also support active transmitters. This type of zero power consumption device can decide which signal emission method (i.e., active transmitter, backscatter transmitter) to use for transmitting signals depending on different conditions (e.g., power budget conditions, available ambient energy) or based on network device scheduling.

[0078] A zero-power device may also be referred to as an Ambient Power (AMP) device, a zero-power device that supports backscattering may also be referred to as a backscatter AMP device or a passive AMP device, and a zero-power device that supports active launching may also be referred to as an active launch AMP device or an active AMP device. AMP devices may be Internet of Things devices that use ambient energy, such as radio frequency energy, light energy, solar energy, thermal energy, or mechanical energy. Such devices may have no energy storage capability or may have limited energy storage capability.

[0079] In some scenarios, the AMP device may be used to perform positioning, for example, by actively emitting positioning reference signals (PRS) to the terminal device when there is sufficient energy, or by backscattering incoming signals to the terminal device. The terminal device can calculate the distance between the terminal device and the AMP device by measuring the power strength or phase of the received signal. Since the location of the AMP device is known, the location of the terminal device can be obtained by multiple measurements (at least three times).

[0080] In a real-world scenario, various types of APM devices (e.g., active AMP devices and passive AMP devices) may be deployed. Thus, the PRS received by the terminal device may be of multiple types. That is, some PRS are actively emitted by active AMP devices, and some PRS are backscattered by passive AMP devices. In this case, how these two types of PRS cooperate is a problem. Furthermore, in a backscattering scenario, the transmitter that emits a signal to the APM device and the receiver that receives the signal from the APM device may not be co-located, which may affect the positioning accuracy. Therefore, how to use APM devices to perform accurate positioning is an urgent problem that needs to be solved.

[0081] In order to facilitate understanding of the technical solutions of the embodiments of the present application, the technical solutions of the present application are described in detail below through specific examples. The above related technologies can be arbitrarily combined with the technical solutions of the embodiments of the present application as alternative solutions, and all of them fall within the scope of protection of the embodiments of the present application. The embodiments of the present application include at least some of the following content:

[0082] FIG. 6 is a schematic diagram of a wireless communication method 200 according to an embodiment of the present application. As shown in FIG. 6, the method 200 includes at least part of the following contents:

[0083] S210, the first type device transmits a first type PRS by active emission, and the second type device transmits a second type PRS by backscattering.

[0084] In response, the first terminal receives the first type PRS and the second type PRS, where the first type PRS and the second type PRS are used to determine the location information of the first terminal, i.e., the first terminal is a terminal waiting for positioning.

[0085] It can be understood that the embodiments of the present application can be applied to various positioning scenarios, such as scenarios requiring low-cost, maintenance-free, and high-precision positioning, and specifically, can be applied to scenarios such as smart homes, smart manufacturing, logistics, or warehousing.

[0086] In some embodiments, the first type device and the second type device have known locations and are also referred to as anchor devices.

[0087] It can be understood that the present application does not limit the number of first type devices transmitting a first type PRS and the number of second type devices transmitting a second type PRS.

[0088] For example, the first terminal can receive a first-type PRS transmitted from one first-type device and second-type PRS transmitted from multiple second-type devices.

[0089] Also, for example, the first terminal can receive a first-type PRS transmitted from a plurality of first-type devices and a second-type PRS transmitted from one second-type device.

[0090] Furthermore, for example, the first terminal can receive a first type PRS transmitted from a plurality of first type devices and a second type PRS transmitted from a plurality of second type devices.

[0091] That is, the first terminal can receive one first type PRS and multiple second type PRSs, or multiple first type PRSs and one second type PRS, or multiple first type PRSs and multiple second type PRSs.

[0092] In some embodiments, the first type device is an active launch AMP device, a second terminal, or a network device.

[0093] In some embodiments, the active launch AMP device may refer to an AMP device with active launch capabilities or an AMP device with an active transmitter. In embodiments of the present application, the active launch AMP device may also be referred to as an active AMP device, such as an active AMP tag.

[0094] In some embodiments, the first terminal and the second terminal may be terminal devices in the communication system shown in FIG. 1, such as a UE in a cellular network or a STA in a WIFI system.

[0095] In some embodiments, the network device may be, for example, a network device in the communication system 100 shown in FIG. 1, such as a base station in a cellular network or an AP in a WIFI system.

[0096] In some embodiments, the second type device is a backscatter AMP device.

[0097] In some embodiments, a backscatter AMP device can refer to an AMP device with backscatter capability or an AMP device with a passive transmitter. In embodiments of the present application, a backscatter AMP device may also be referred to as a passive AMP device, e.g., a passive AMP tag.

[0098] In the present embodiment, the first type PRS is also referred to as an actively launched PRS or an active PRS, and the second type PRS is also referred to as a backscattered PRS.

[0099] In some embodiments, the location information of the first terminal may be calculated by the first terminal, for example, the first terminal may perform measurements on a first type PRS and a second type PRS, and further determine the location information of the first terminal based on the measurement results.

[0100] In some other embodiments, the location information of the first terminal may be calculated by a network device, for example, the first terminal may perform measurements on a first type PRS and a second type PRS, and then report the measurement results to the network device, which may then calculate the location information of the first terminal.

[0101] In some embodiments, the location information of the first terminal may be calculated based on a carrier wave phase positioning method, for example, determining the location information of the first terminal based on phase information of at least three PRSs (e.g., including at least one first-type PRS and at least one second-type PRS).

[0102] Specific transmission methods of the first and second type PRSs will be described below in accordance with specific embodiments.

[0103] In some embodiments, the first type PRS is one that is transmitted periodically.

[0104] In some embodiments, the first type device periodically transmitting the first type PRS may be predefined or configured by the first terminal or network device.

[0105] For example, the first type PRS is transmitted by the first type device based on first configuration information, where the first configuration information is predefined, or the first configuration information is configured by the first terminal or network device.

[0106] As one option, the first configuration information is used to configure the transmission period and transmission time length of the first type PRS, where the transmission time length refers to the length of time for transmitting the first type PRS within one period.

[0107] As one option, the first configuration information is used to configure the transmission period, transmission time length, and duration length of the first type PRS, where the transmission time length refers to the length of time for transmitting the first type PRS within one period, and the duration length refers to the duration length (e.g., the number of duration periods) for continuously transmitting the first type PRS.

[0108] In some implementations, the first configuration information is persistent, i.e., the first type device always transmits the first type PRS based on the first configuration information, for example, the first type device continuously transmits the first type PRS based on the configured transmission period and duration length, and signaling overhead using this method is low.

[0109] In some other implementations, the first configuration information may be dynamic, i.e., the first-type device transmits the first-type PRS only during the configured time. For example, the transmission period and duration are dynamically configured. Furthermore, the first-type PRS is transmitted during the configured duration. This method reduces power consumption. Optionally, in this implementation, the first terminal may trigger the second-type device to transmit the backscattered PRS based on the first configuration information.

[0110] In some other embodiments, the first type PRS is transmitted based on a trigger or is transmitted as needed, for example, the first type PRS is transmitted based on a first trigger signal of the first terminal, which is advantageous for reducing power consumption of the first type device.

[0111] In some embodiments, the first trigger signal can be used to trigger the first type device to transmit the first type PRS once, or can be used to trigger the first type device to transmit the first type PRS within a certain duration, and the specific manner to be adopted can be configured by the first terminal or the network device.

[0112] In some embodiments, the first configuration information is carried in the first trigger signal, i.e., when the first terminal triggers the first type device to transmit the first type PRS, it simultaneously instructs the transmission configuration of the first type PRS.

[0113] In some embodiments, the second-type PRS is transmitted based on a trigger. For example, the second-type PRS is transmitted when a second trigger signal from the first terminal is received. In some embodiments, the second trigger signal can be used to trigger the second-type device to transmit the second-type PRS once, or can be used to trigger the second-type device to transmit the second-type PRS within a certain duration. The specific manner to be adopted can be determined by the first terminal or the network device.

[0114] In some other embodiments, the second type PRS may not be transmitted based on a trigger, for example, the second type device always backscatters incoming signals it receives, in which case the first terminal does not need to trigger the second type device to backscatter incoming signals.

[0115] In some embodiments, the second type PRS is transmitted by backscattering relative to a third type PRS, i.e., the third type PRS is used as an incoming signal for the backscattered PRS.

[0116] In some embodiments, the third type PRS is transmitted by the first terminal, that is, the second type PRS incoming signal is provided by a terminal awaiting positioning.

[0117] In some embodiments, the first terminal transmits the third type PRS based on a first timing advance amount, which is advantageous to ensure alignment between the time at which the first terminal receives the first type PRS and the time at which the first terminal receives the second type PRS, i.e., the time at which the first terminal receives the first type PRS and the time at which the first terminal receives the second type PRS overlap.

[0118] In some embodiments, the first timing advance amount is configured by a network device, for example, the first timing advance amount may be determined by the network device based on measurement results of the network device and the first terminal.

[0119] In some embodiments, the first timing advance amount is self-determined by the first terminal.

[0120] In some embodiments, to ensure alignment between the time at which the first terminal receives the first type PRS and the time at which the second type PRS is received, the first timing advance amount needs to be designed based on a propagation delay between the first type device and the first terminal, a propagation delay between the first terminal and the second type device, a processing time of the first terminal, etc. For example, the first terminal can estimate in advance the time at which the first type PRS will reach the first terminal based on the first configuration information, and further transmit a third type PRS based on the first timing advance amount. When the second type device receives the third type PRS, the first terminal transmits the second type PRS by backscattering it relative to the third type PRS, thereby ensuring alignment between the time at which the first type PRS and the second type PRS reach the first terminal.

[0121] It can be understood that in some cases, the time at which the first terminal receives the first type PRS and the time at which the second type PRS is received may be aligned or overlapped, for example, when the first terminal has high mobility, it is necessary to ensure that the time at which the first terminal receives the first type PRS and the time at which the first terminal receives the second type PRS are aligned; in other cases, the time at which the first terminal receives the first type PRS and the time at which the first terminal receives the second type PRS may not be aligned or overlapped, for example, when the first terminal has low mobility or a fixed location. In this case, the time at which the first terminal receives the first type PRS and the time at which the second type PRS is received may not be aligned (e.g., the first type PRS and the second type PRS may be received in different time periods), in which case the transmission of the first type PRS by the first type device and the transmission of the second type PRS by the second type device may be decoupled or independent, i.e., there is no need to coordinate the timing between them. In this way, the actively emitted PRS and the backscattered PRS can be time-division multiplexed to avoid interfering with each other when they occupy the same radio resources.

[0122] As one option, if the first type PRS and the second type PRS are not aligned, after the first terminal makes measurements on the first type PRS and the second type PRS, a timestamp can be incremented to the measurement result to indicate the time at which the PRS was received, and used to determine whether the difference in reception time between the first type PRS and the second type PRS is short enough to determine that the position of the first terminal will not change during the measurement.

[0123] In some embodiments, the second type PRS and the third type PRS have a frequency offset, which may be predefined or configurable, for example, configured by the network device or configured by the first terminal.

[0124] For example, if the first type PRS and the second type PRS require time alignment, the second type device needs to perform frequency offset before backscattering to the third type PRS so that the backscattering PRS and the active launch PRS are orthogonal to each other. That is, the second type PRS and the first type PRS are frequency-divided, which can improve the positioning accuracy and the coverage range of the PRS.

[0125] Also, for example, if the first and second type PRSs do not have a time alignment requirement (i.e., the first and second type PRSs do not need to be aligned or overlap), the second type device may need to perform a frequency offset on the third type PRS before backscattering, in which case the second and first type PRSs may be frequency-shared and time-shared.

[0126] In some other embodiments, the second type PRS and the third type PRS do not have a frequency offset.

[0127] For example, if the first type PRS and the second type PRS do not have a time alignment requirement (i.e., the first type PRS and the second type PRS do not need to be aligned or overlap), the second type device does not need to have a frequency offset relative to the third type PRS, in which case the second type PRS and the first type PRS may be time-shared.

[0128] In some embodiments, the first type PRS and the third type PRS are transmitted on the same channel, or the frequency ranges of the first type PRS and the third type PRS overlap.

[0129] In this case, to ensure that the first type PRS and the second type PRS are orthogonal, if there is a time alignment requirement, a frequency offset can be applied to the third type PRS to obtain the second type PRS, in which case the first type PRS and the second type PRS are frequency-multiplexed; or if there is no time alignment requirement, the first type PRS and the second type PRS can be time-multiplexed, in which case the third type PRS can be frequency-offset or not frequency-offset.

[0130] In some other embodiments, the third-type PRS is transmitted from the first-type device. In this case, the terminal awaiting positioning does not need to provide an incoming signal of the backscattered PRS and is considered to be in a state of passively receiving the PRS. The backscattered PRS in this case can be called a forwarding backscattered PRS.

[0131] In some implementations, the third type PRS is periodically transmitted by the first type device. For specific implementations, please refer to the first type PRS method, and detailed descriptions will be omitted here. As an option, if the first type device has a power source or a large-capacity battery (for example, the first type device is a second terminal or a physical device), this method can be adopted to transmit the third type PRS.

[0132] In some other implementations, the third type PRS is transmitted based on a trigger or on demand, for example, based on a third trigger signal from the first terminal. Furthermore, the second type device can backscatter the incoming signal (i.e., the third type PRS) to the first terminal. As an option, if the first type device does not have a power supply or has limited energy storage capacity, for example, if the first type device is an active AMP tag that relies on energy harvesting, this method can be adopted to transmit the third type PRS.

[0133] In some embodiments, the third-type PRS and the second-type PRS have a frequency offset. The frequency offset may be predefined or configurable. For example, a second-type device may apply a frequency offset to a third-type PRS before backscattering the third-type PRS, thereby advantageously ensuring that the actively launched PRS and the backscattered PRS are orthogonal to each other.

[0134] In some specific embodiments, the first type device can transmit an actively emitted PRS periodically or based on a trigger, the first type device can transmit a third type PRS periodically or based on a trigger, the second type device can backscatter to the third type PRS based on a trigger, or can not backscatter to the third type PRS based on a trigger, and in this way, the first terminal can receive the actively emitted PRS of the first type device and the backscattered PRS of the second type device, and further make measurements on the actively emitted PRS and backscattered PRS for subsequent positioning.

[0135] Hereinafter, a positioning method according to an embodiment of the present application will be described in accordance with a specific embodiment.

[0136] Example 1:

[0137] 7, the terminal waiting for positioning is a first terminal, and the AMP devices assisting positioning include AMP device 1, AMP device 2, and AMP device 3, where AMP device 1 and AMP device 3 are backscattering AM devices, i.e., second-type devices, and AMP device 2 is an active emission AMP device, i.e., first-type device. It can be understood that the number of first-type devices and second-type devices in FIG. 7 is just an example, for example, there may be multiple first-type devices and one second-type device, etc.

[0138] Specifically, the first terminal can receive a first type PRS actively emitted by AMP device 2, a second type PRS backscattered by AMP device 1, and a second type PRS backscattered by AMP device 3.

[0139] In some implementations, as shown in FIG. 8, the active launch AMP device can periodically transmit the active launch PRS, and the specific transmission manner can be referred to the relevant description in the above embodiments.

[0140] In some other implementation methods, as shown in Figures 9 and 10, the active launch AMP device can also transmit the active launch PRS as needed, for example, when it receives a first trigger signal from the first terminal, it transmits the active launch PRS, where the first trigger signal is used to trigger the active launch AMP device to transmit the active launch PRS, and for specific transmission methods, please refer to the relevant descriptions in the above embodiments.

[0141] In some embodiments, the first terminal can transmit a PRS for backscattering, i.e., a third-type PRS, for example, periodically as shown in Figure 8, or as needed as shown in Figures 9 and 10.

[0142] In some implementations, as shown in Figures 8 and 10, the backscattering AMP device can transmit a backscattering PRS based on a trigger, for example, when it receives a second trigger signal from the first terminal, it backscatters the received incoming wave signal, where the second trigger signal is used to trigger the backscattering AMP device to transmit a backscattering PRS; or, as shown in Figure 9, it may not transmit a backscattering PRS based on a trigger, for example, it always backscatters the received incoming wave signal.

[0143] In some implementations, as shown in Figures 8 and 9, the actively emitted PRS and the backscattered PRS received by the first terminal are aligned, in which case the backscattered AMP device needs to perform a frequency offset on the third type PRS before backscattering.

[0144] In some other implementations, as shown in FIG. 10, the actively emitted PRS and the backscattered PRS received by the first terminal may not be aligned or may not overlap, in which case the backscattered AMP device may perform a frequency offset on the third type device before backscattering, but may not perform a frequency offset on the third type PRS.

[0145] Example 2:

[0146] 11, the terminal waiting for positioning is a first terminal, and the AMP device assisting positioning includes a first-type device and an AMP device 3, where the first-type device may be an active emission AMP device, a second terminal, or a network device, and the AMP device 3 is a backscattering AMP device, i.e., a second-type device. Here, the number of first-type devices may be one or more, and the number of second-type devices may be one or more.

[0147] Specifically, the first terminal can receive a first type PRS that is actively emitted by a first type device and a second type PRS that is backscattered by the AMP device 3 .

[0148] The difference between Example 2 and Example 1 is that in Example 1, the incoming wave signal (i.e., the third type PRS) for backscattering of the second type device is provided by the first terminal, while in Example 2, the incoming wave signal (i.e., the third type PRS) for backscattering of the second type device is provided by the first type device.

[0149] In some implementations, the third PRS may be periodically transmitted by the first device or transmitted as needed, for example, transmitted based on the third trigger signal of the first terminal. For specific implementations, please refer to the relevant descriptions in the above embodiments, and detailed descriptions will be omitted here.

[0150] In summary, the embodiments of the present application provide a method for a terminal waiting for positioning to perform positioning based on active launch PRS and backscatter PRS, and specifically design the transmission method and coordination method for active launch PRS and backscatter PRS, which is advantageous to ensuring positioning accuracy when performing positioning based on active launch PRS and backscatter PRS. In addition, the backscatter AMP device has advantages such as low cost and maintenance-free, so that positioning based on backscatter PRS can be performed to achieve low-cost and high-precision positioning.

[0151] FIG. 12 is a schematic diagram of another wireless communication method 300 provided in an embodiment of the present application. As shown in FIG. 12, the method 300 includes at least part of the following contents:

[0152] In step S310, the first terminal transmits a fourth type PRS by active emission, and the second terminal transmits a fifth type PRS by backscattering, and the third terminal receives the fourth type PRS in response.

[0153] S320 determines location information of the first terminal based on the fourth type PRS and the fifth type PRS.

[0154] It can be understood that the embodiments of the present application can be applied to various positioning scenarios, such as scenarios requiring low-cost, maintenance-free, and high-precision positioning, specifically, scenarios such as smart homes, smart manufacturing, logistics, or warehousing.

[0155] In some embodiments, the location of the second type device is known, and the second type device is also referred to as an anchor device.

[0156] It should be understood that the present application does not limit the number of second-type devices transmitting second-type PRSs. For example, a third terminal may receive one fourth-type PRS and multiple fifth-type PRSs, where the multiple fifth-type PRSs include at least two fifth-type PRSs.

[0157] In some embodiments, the third device is a second terminal or a network device.

[0158] In some embodiments, the first terminal and the second terminal may be terminal devices in the communication system shown in FIG. 1, such as a UE in a cellular network or a STA in a WIFI system.

[0159] In some embodiments, the network device may be, for example, a network device in the communication system 100 shown in FIG. 1, such as a base station in a cellular network or an AP in a WIFI system.

[0160] In some embodiments, the second type device is a backscatter AMP device.

[0161] In some embodiments, a backscatter AMP device can refer to an AMP device with backscatter capability or an AMP device with a passive transmitter. In embodiments of the present application, a backscatter AMP device is also referred to as a passive AMP device, and the AMP device may be, for example, a passive AMP tag.

[0162] In the present embodiment, the fourth type PRS is also referred to as an active PRS, and the fifth type PRS is also referred to as a backscattered PRS.

[0163] In some embodiments, the third device may perform measurements on the fourth and fifth type PRSs and determine location information of the first terminal based on the measurement results. For example, the third device may calculate location information of the first terminal based on a carrier wave phase positioning method. For example, the third device may determine location information of the first terminal based on phase information of at least three PRSs (e.g., including an active emission PRS and at least two backscatter PRSs).

[0164] In some embodiments, the fourth type PRS is transmitted periodically or as needed.

[0165] In some embodiments, the first terminal's periodic emission of the fourth type PRS may be predefined or configured by a network device.

[0166] For example, the fourth type PRS is transmitted by the first terminal based on second configuration information, where the second configuration information is predefined, or the first configuration information is configured by a network device.

[0167] As one option, the second configuration information is used to configure the transmission period and transmission time length of the fourth type PRS, where the transmission time length refers to the length of time for transmitting the fourth type PRS within one period.

[0168] As one option, the second configuration information is used to configure the transmission period, transmission time length, and duration length of the fourth type PRS, where the transmission time length refers to the length of time for transmitting the fourth type PRS within one period, and the duration length refers to the duration length (e.g., the number of duration periods) for continuously transmitting the fourth type PRS.

[0169] In some implementations, the second configuration information is persistent, i.e., the first terminal always transmits the fourth type PRS based on the second configuration information, for example, the first terminal continuously transmits the fourth type PRS based on the configured transmission period and duration length, and signaling overhead using this method is low.

[0170] In some other implementations, the second configuration information may be dynamic, i.e., the first terminal transmits the fourth type PRS only during the configured time. For example, the transmission cycle and duration are dynamically configured. Furthermore, the fourth type PRS is transmitted during the configured time. This method has low power consumption.

[0171] In some embodiments, the fifth type PRS is transmitted by backscattering to the sixth type PRS of the first terminal, i.e., the incoming wave signal of the backscattered PRS is provided by the terminal awaiting positioning.

[0172] In some embodiments, the sixth type PRS is transmitted periodically or as needed. As an option, the transmission manner of the sixth type PRS may refer to the transmission manner of the fourth type PRS, and detailed description thereof will be omitted here.

[0173] In some embodiments, the fifth-type PRS is transmitted based on a trigger, for example, the first terminal first transmits a fourth trigger signal before transmitting the sixth-type PRS, and the second-type device transmits the fifth-type PRS upon receiving the fourth trigger signal from the first terminal.

[0174] In some other embodiments, the fifth type PRS may not be transmitted based on a trigger, for example, the second type device always backscatters the received incoming wave signal, in which case the first terminal does not need to trigger the second type device to backscatter the incoming wave signal.

[0175] In some embodiments, the fifth type PRS and the sixth type PRS have a frequency offset, which may be predefined or configurable, for example, configured by a first terminal or a network device.

[0176] In some specific implementations, the second type device may first perform a frequency offset on the sixth type PRS before backscattering the sixth type PRS, which is advantageous in ensuring that the actively emitted PRS and the backscattered PRS are orthogonal to each other.

[0177] Hereinafter, a positioning method according to an embodiment of the present application will be described in accordance with a specific embodiment.

[0178] As shown in Figure 13, the terminal awaiting positioning is a first terminal, PRS measurement is performed by a third device, the first terminal is used to transmit the PRS in an active manner, and the AMP device 3 is used to transmit the PRS in a backscattering manner, where the third device may be a second terminal or a network device, and the AMP device 3 may be a backscattering AMP device. Specifically, the third device can receive the PRS actively transmitted by the first terminal and the backscattering PRS transmitted from the backscattering AMP device. It can be understood that in the example of Figure 13, the number of backscattering AMP devices may be two or more.

[0179] In some implementations, the first terminal can periodically transmit an active launch PRS and a PRS for backscattering (i.e., a sixth type PRS), and the backscatter AMP device can transmit the backscattered PRS to the third device by backscattering the sixth type PRS. For example, the backscatter AMP device can backscatter the received incoming wave signal when it receives a trigger signal from the first terminal, or can always backscatter the received incoming wave signal. Furthermore, the third device can determine location information of the first terminal by measuring the received active launch PRS and backscattered PRS.

[0180] As described above, the embodiments of the present application provide a solution for a terminal not waiting for positioning to perform positioning based on active launch PRS and backscatter PRS, and the transmission methods of the active launch PRS and backscatter PRS are specifically designed, which is advantageous to ensuring positioning accuracy when performing positioning based on active launch PRS and backscatter PRS. In addition, the backscatter AMP device has advantages such as low cost and maintenance-free. Therefore, performing positioning based on backscatter PRS can achieve low-cost and high-precision positioning.

[0181] The above describes in detail the method embodiment of the present application in conjunction with Figures 6 to 13, and the following describes in detail the device embodiment of the present application in conjunction with Figures 14 to 22. It should be understood that the device embodiment and the method embodiment correspond to each other, and similar descriptions can be referred to the method embodiment.

[0182] 14 shows a schematic block diagram of a communication device 400 according to an embodiment of the present application. As shown in FIG.

[0183] The communication unit 410 is used to receive a first type of positioning reference signal PRS and a second type of PRS, where the first type of PRS is transmitted by a first type of device in an active emission manner and the second type of PRS is transmitted by a second type of device in a backscattering manner, and the first type of PRS and the second type of PRS are used to determine location information of the communication device 400.

[0184] In some embodiments, the first type device is an active launch AMP device, a second terminal, or a network device.

[0185] In some embodiments, the second type device is a backscatter AMP device.

[0186] In some embodiments, the first type PRS is transmitted periodically, or the first type PRS is transmitted based on a first trigger signal of the communications device 400 .

[0187] In some embodiments, the first type PRS is transmitted by the first type device based on first configuration information, where the first configuration information is predefined or where the first configuration information is configured by the communication device 400 or a network device.

[0188] In some embodiments, the first configuration information is configured by the communications device 400, wherein the first configuration information is carried in the first trigger signal.

[0189] In some embodiments, the second type PRS is transmitted based on a second trigger signal of the communications device 400 .

[0190] In some embodiments, the second type PRS is transmitted by backscattering relative to a third type PRS.

[0191] In some embodiments, the third type PRS is transmitted from the communication device 400 .

[0192] In some embodiments, the third type PRS is one that the communications device 400 transmits based on a first timing advance amount.

[0193] In some embodiments, the first timing advance amount is configured by a network device, and the first timing advance amount is determined by the network device based on measurements of the network device and the communication device 400.

[0194] In some embodiments, the first timing advance amount is determined by the communications device 400 itself.

[0195] In some embodiments, the time at which the communications device 400 receives the first type PRS and the time at which it receives the second type PRS are aligned.

[0196] In some embodiments, the second type PRS and the third type PRS have configurable or predefined frequency offsets.

[0197] In some embodiments, the times at which the communications device 400 receives the first type PRS and the second type PRS do not overlap.

[0198] In some embodiments, the second type PRS and the third type PRS have a configurable frequency offset or a predefined frequency offset, or the second type PRS and the third type PRS do not have a frequency offset.

[0199] In some embodiments, the third type PRS is transmitted from the first type device.

[0200] In some embodiments, the third type PRS is transmitted periodically by the first type device, or the third type PRS is transmitted by the first type device based on a third trigger signal of the communication device 400.

[0201] In some embodiments, the third type PRS and the second type PRS have a configurable frequency offset or a predefined frequency offset.

[0202] Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or a communication chip, an input / output interface of a system on a chip, and the processing unit may be one or more processors.

[0203] It can be understood that the communication device 400 according to the embodiment of the present application can correspond to the first terminal in the embodiment of the method of the present application, and the above and other operations and / or functions of each unit in the communication device 400 are respectively used to realize the corresponding flow of the first terminal in the method shown in Figures 6 to 11, and detailed descriptions thereof will be omitted here for brevity.

[0204] 15 shows a schematic block diagram of a communication device 500 according to an embodiment of the present application. As shown in FIG.

[0205] The communication unit 510 is used to transmit a second type positioning reference signal PRS to a first terminal, where the second type PRS is transmitted by the communication device 500 in a backscattering manner, and the second type PRS is used to determine location information of the first terminal.

[0206] In some embodiments, the communications device 500 is a backscatter AMP device.

[0207] In some embodiments, the second type PRS is transmitted based on a second trigger signal of the first terminal.

[0208] In some embodiments, the second type PRS is transmitted by backscattering relative to a third type PRS.

[0209] In some embodiments, the third type PRS is transmitted from the first terminal.

[0210] In some embodiments, the third type PRS is transmitted by the first terminal based on a first timing advance amount.

[0211] In some embodiments, the first timing advance amount is configured by a network device, and the first timing advance amount is determined by the network device based on measurement results of the network device and the first terminal.

[0212] In some embodiments, the first timing advance amount is self-determined by the first terminal.

[0213] In some embodiments, the time at which the first terminal receives the first type PRS and the time at which the first terminal receives the second type PRS are aligned.

[0214] In some embodiments, the second type PRS and the third type PRS have configurable or predefined frequency offsets.

[0215] In some embodiments, the time during which the first terminal receives the first type PRS and the time during which the first terminal receives the second type PRS do not overlap.

[0216] In some embodiments, the second type PRS and the third type PRS have a configurable frequency offset or a predefined frequency offset, or the second type PRS and the third type PRS do not have a frequency offset.

[0217] In some embodiments, the third type PRS is transmitted from a first type device, which is further used to transmit the first type PRS to the first terminal, and the first type PRS and the second type PRS are used to determine location information of the first terminal.

[0218] In some embodiments, the third type PRS is transmitted periodically by the first type device, or the third type PRS is transmitted by the first type device based on a third trigger signal of the first terminal.

[0219] In some embodiments, the third type PRS and the second type PRS have a configurable frequency offset or a predefined frequency offset.

[0220] Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or a communication chip, an input / output interface of a system on a chip, and the processing unit may be one or more processors.

[0221] It can be understood that the communication device 500 according to the embodiment of the present application can correspond to the second type device in the embodiment of the method of the present application, and the above and other operations and / or functions of each unit in the communication device 500 are respectively used to realize the corresponding flow of the second type device in the method shown in Figures 6 to 11, and detailed descriptions thereof will be omitted here for brevity.

[0222] 16 shows a schematic block diagram of a communication device 600 according to an embodiment of the present application. As shown in FIG.

[0223] The communication unit 610 is used to transmit a first type of positioning reference signal PRS to a first terminal, where the first type of PRS is transmitted by the communication device 600 in an active emission manner, and the first type of PRS is used to determine location information of the first terminal.

[0224] In some embodiments, the communications device 600 is an active launch AMP device, a second terminal, or a network device.

[0225] In some embodiments, the first type PRS is transmitted periodically, or the first type PRS is transmitted based on a first trigger signal of the first terminal.

[0226] In some embodiments, the first type PRS is transmitted by the communication device 600 based on first configuration information, which is predefined or configured by the first terminal or network device.

[0227] In some embodiments, the first configuration information is configured by the first terminal, wherein the first configuration information is carried in the first trigger signal.

[0228] In some embodiments, the communication unit 610 is further used to transmit a third type PRS to a second type device.

[0229] The third type PRS is used by the second type device to backscatter to obtain the second type PRS, and the first type PRS and the second type PRS are used to determine location information of the first terminal.

[0230] In some embodiments, the third type PRS is transmitted by the communication device 600 periodically, or the third type PRS is transmitted by the communication device 600 based on a third trigger signal of the first terminal.

[0231] In some embodiments, the third type PRS and the second type PRS have a configurable frequency offset or a predefined frequency offset.

[0232] In some embodiments, the second type device is a backscatter AMP device.

[0233] Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or a communication chip, an input / output interface of a system on a chip, and the processing unit may be one or more processors.

[0234] It can be understood that the communication device 600 according to the embodiment of the present application can correspond to the first type device in the embodiment of the method of the present application, and the above and other operations and / or functions of each unit in the communication device 600 are respectively used to realize the corresponding flow of the first type device in the method shown in Figures 6 to 11, and detailed descriptions thereof will be omitted here for brevity.

[0235] 17 shows a schematic block diagram of a communication device 700 according to an embodiment of the present application. As shown in FIG. 17, the communication device 700 includes: a communication unit 710 and a processing unit 720.

[0236] The communication unit 710 is used to receive a fourth type positioning reference signal PRS and a fifth type PRS, where the fourth type PRS is transmitted by a first terminal in an active emission manner, and the fifth type PRS is transmitted by a second type device in a backscattering manner.

[0237] The processing unit 720 is used to determine location information of the first terminal based on the fourth type PRS and the fifth type PRS.

[0238] In some embodiments, the communications device 700 is a second terminal or network device.

[0239] In some embodiments, the second type device is a backscatter AMP device.

[0240] In some embodiments, the fourth type PRS is transmitted periodically.

[0241] In some embodiments, the fifth type PRS is transmitted by backscattering to a sixth type PRS of the first terminal.

[0242] In some embodiments, the fifth type PRS and the sixth type PRS have configurable or predefined frequency offsets.

[0243] In some embodiments, the fifth type PRS is transmitted by the second type device based on a fourth trigger signal of the first terminal.

[0244] Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or a communication chip, an input / output interface of a system on a chip, and the processing unit may be one or more processors.

[0245] It can be understood that the communication device 400 according to the embodiment of the present application can correspond to the third device in the embodiment of the method of the present application, and the above and other operations and / or functions of each unit in the communication device 700 are respectively used to realize the corresponding flow of the third device in the method shown in Figures 12 and 13, and detailed descriptions thereof will be omitted here for brevity.

[0246] 18 shows a schematic block diagram of a communication device 800 according to an embodiment of the present application. As shown in FIG. 18, the communication device 800 includes a communication unit 810.

[0247] The communication unit 810 is used to transmit a fourth type positioning reference signal PRS to a third device, the fourth type PRS being transmitted in an active emission manner, and the fourth type PRS being used to determine location information of the communication device 800.

[0248] In some embodiments, the third device is a second terminal or a network device.

[0249] In some embodiments, the fourth type PRS is transmitted periodically.

[0250] In some embodiments, the communication unit 810 is further used to transmit a sixth type PRS to a second type device;

[0251] The sixth type PRS is used by the second type device to backscatter to obtain the fifth type PRS, and the fourth type PRS and the fifth type PRS are used to determine location information of the communication device 800.

[0252] In some embodiments, the fifth type PRS and the sixth type PRS have configurable or predefined frequency offsets.

[0253] In some embodiments, the second type device is a backscatter AMP device.

[0254] In some embodiments, the fifth type PRS is one that the second type device transmits based on a fourth trigger signal of the communications device 800 .

[0255] Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or a communication chip, an input / output interface of a system on a chip, and the processing unit may be one or more processors.

[0256] It can be understood that the communication device 800 according to the embodiment of the present application can correspond to the first terminal in the embodiment of the method of the present application, and the above and other operations and / or functions of each unit in the communication device 800 are respectively used to realize the corresponding flow of the first terminal in the method shown in Figures 12 and 13, and detailed descriptions thereof will be omitted here for brevity.

[0257] 19 shows a schematic block diagram of a communication device 900 according to an embodiment of the present application. As shown in FIG. 19, the communication device 900 includes a communication unit 910.

[0258] The communication unit 910 is used to transmit a fifth type positioning reference signal PRS to a third device, the fifth type PRS being transmitted in a backscattering manner, and the fifth type PRS being used to determine the location information of the first terminal.

[0259] In some embodiments, the third device is a second terminal or a network device.

[0260] In some embodiments, the communications device 900 is a backscatter AMP device.

[0261] In some embodiments, the fifth type PRS is transmitted by backscattering to a sixth type PRS of the first terminal.

[0262] In some embodiments, the fifth type PRS and the sixth type PRS have configurable or predefined frequency offsets.

[0263] In some embodiments, the fifth type PRS is one that the communications device 900 transmits based on a fourth trigger signal of the first terminal.

[0264] Alternatively, in some embodiments, the communication unit may be a communication interface or transceiver, or a communication chip, an input / output interface of a system on a chip, and the processing unit may be one or more processors.

[0265] It can be understood that the communication device 900 according to the embodiment of the present application can correspond to the second type device in the embodiment of the method of the present application, and the above and other operations and / or functions of each unit in the communication device 900 are respectively used to realize the corresponding flow of the second type device in the method shown in Figures 12 and 13, and detailed descriptions thereof will be omitted here for brevity.

[0266] 20 is a schematic structural diagram of a communication device 1000 provided in an embodiment of the present application. The communication device 1000 shown in FIG. 20 includes a processor 110, which can call and execute a computer program from a memory to implement the method in the embodiment of the present application.

[0267] 20, the communication device 1000 may further include a memory 1020. The processor 1010 may call and execute a computer program from the memory 1020 to implement the method of the present invention.

[0268] Here, the memory 1020 may be a single, stand-alone device independent of the processor 1010, or may be integrated into the processor 1010.

[0269] As an option, as shown in FIG. 20, the communication device 1000 may further include a transceiver 1030, and the processor 1010 may control the transceiver 1030 to communicate with other devices, specifically to transmit information or data to other devices or receive information or data transmitted from other devices.

[0270] Here, the transceiver 1030 may include a transmitter and a receiver, and may further include an antenna, the number of which may be one or more.

[0271] As an option, the communication device 1000 may specifically be the first terminal of the embodiments of the present application, and the communication device 1000 may implement the corresponding flow implemented by the first terminal in each method of the embodiments of the present application, and for the sake of brevity, detailed description will be omitted here.

[0272] As an option, the communication device 1000 may specifically be a first-type device in the embodiments of the present application, and the communication device 1000 may implement the corresponding flow implemented by the first-type device in each method in the embodiments of the present application, and for the sake of brevity, detailed description will be omitted here.

[0273] As an option, the communication device 1000 may specifically be a second type device in the embodiments of the present application, and the communication device 1000 may implement the corresponding flow implemented by the second type device in each method in the embodiments of the present application, and for the sake of brevity, detailed description will be omitted here.

[0274] As an option, the communication device 1000 may specifically be a third device in the embodiments of the present application, and the communication device 1000 may implement the corresponding flow implemented by the third device in each method in the embodiments of the present application, and for the sake of brevity, detailed description will be omitted here.

[0275] 21 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 1100 shown in FIG. 21 includes a processor 1110, which can call and execute a computer program from a memory to implement the method according to the embodiment of the present application.

[0276] 21, the chip 1100 may further include a memory 1120. Here, the processor 1110 may call and execute a computer program from the memory 1120 to implement the method of the present embodiment.

[0277] Here, the memory 1120 may be a single, stand-alone device independent of the processor 1110 or may be integrated into the processor 1110.

[0278] Optionally, the chip 1100 may further include an input interface 1130. Here, the processor 1110 may control the input interface 1130 to communicate with other devices or chips, specifically, to obtain information or data transmitted from other devices or chips.

[0279] Optionally, the chip 1100 may further include an output interface 1140. Here, the processor 1110 may control the output interface 1140 to communicate with other devices or chips, specifically, to output information or data to other devices or chips.

[0280] As an option, the chip can be applied to the first terminal in the embodiments of the present application, and the chip can implement the corresponding flow implemented by the first terminal in each method of the embodiments of the present application, and for the sake of brevity, detailed description will be omitted here.

[0281] As an option, the chip can be applied to the first type device in the embodiments of the present application, and the chip can implement the corresponding flow implemented by the first type device in each method of the embodiments of the present application, and for the sake of brevity, detailed description will be omitted here.

[0282] As an option, the chip can be applied to a second type device in the embodiments of the present application, and the chip can implement the corresponding flow implemented by the second type device in each method of the embodiments of the present application, and for the sake of brevity, detailed description will be omitted here.

[0283] As an option, the chip can be applied to a third device in the embodiments of the present application, and the chip can implement the corresponding flow implemented by the third device in each method of the embodiments of the present application, and for the sake of brevity, detailed description will be omitted here.

[0284] It will be appreciated that a chip according to an embodiment of the present application may also be referred to as a system level chip, a system chip, a chip system, or a system on a chip.

[0285] 22 is a schematic block diagram of a communication system 1200 provided in an embodiment of the present application. As shown in FIG. 22, the communication system 1200 includes a first terminal 1210, a first-type device 1220, and a second-type device 1230.

[0286] Here, the first terminal 1210 is used to realize the corresponding function realized by the first terminal in the above method, and the first type device 1220 is used to realize the corresponding function realized by the first type device in the above method, and the second type device 1230 can be used to realize the corresponding function realized by the second type device in the above method, and for the sake of brevity, detailed descriptions are omitted here.

[0287] It is understood that the exemplary processor of the present application may be an integrated circuit chip capable of processing signals. In the implementation process, each step of the above method embodiment can be completed by an integrated logic circuit in hardware or instructions in software form in the processor. The processor may be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component. Each method, step, and logic block diagram disclosed in the embodiments of the present application can be realized or executed. The general-purpose processor may be a microprocessor, or the processor may be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application may be directly implemented by a hardware coding processor or by a combination of hardware and software modules in the coding processor. The software module can be located in a storage medium mature in the art, such as a random memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads information in the memory and completes the steps of the above method according to its hardware.

[0288] It is understood that memory in the present embodiments may be volatile, non-volatile, or both. Here, non-volatile memory may 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. Volatile memory may be random access memory (RAM), which is used as external cache. By way of example and not limitation, many forms of RAM are possible. For example, static random access memory (Static RAM, SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronously linked dynamic random access memory (Synchlink DRAM, SLDRAM), and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the systems and methods described herein includes, but is not limited to, these and any other suitable types of memory.

[0289] It should be understood that the above memory is illustrative and not limiting. For example, the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM), and direct memory bus random access memory (Direct Rambus RAM, DR RAM), etc. Thus, the memory in the embodiments of the present application may include, but is not limited to, these and any other suitable types of memory.

[0290] The embodiments of the present application further provide a computer-readable storage medium used to store a computer program.

[0291] As an option, the computer-readable storage medium can be applied to a first terminal in the embodiments of the present application, and the computer program causes a computer to execute corresponding flows implemented by the first terminal in each method of the embodiments of the present application, and for the sake of brevity, detailed descriptions are omitted here.

[0292] As an option, the computer-readable storage medium can be applied to a first type device in the embodiments of the present application, and the computer program causes a computer to execute corresponding flows implemented by the first type device in each method of the embodiments of the present application, and detailed descriptions thereof will be omitted here for brevity.

[0293] As an option, the computer-readable storage medium can be applied to a second type device in the embodiments of the present application, and the computer program causes a computer to execute corresponding flows implemented by the second type device in each method of the embodiments of the present application, and detailed descriptions thereof will be omitted here for brevity.

[0294] As an option, the computer-readable storage medium can be applied to a third device in the embodiments of the present application, and the computer program causes a computer to execute corresponding flows implemented by the third device in each method of the embodiments of the present application, and detailed descriptions thereof will be omitted here for brevity.

[0295] Embodiments of the present application further provide a computer program product including computer program instructions.

[0296] As an option, the computer program product can be applied to a first terminal in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding flows implemented by the first terminal in each method of the embodiments of the present application, and for the sake of brevity, detailed descriptions are omitted here.

[0297] As an option, the computer program product can be applied to a first type device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding flows implemented by the first type device in each method of the embodiments of the present application, and detailed descriptions thereof will be omitted here for brevity.

[0298] As an option, the computer program product can be applied to a second type device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding flows implemented by the second type device in each method of the embodiments of the present application, and detailed descriptions thereof will be omitted here for brevity.

[0299] As an option, the computer program product can be applied to a third device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding flows implemented by the third device in each method of the embodiments of the present application, and detailed descriptions thereof will be omitted here for brevity.

[0300] In accordance with an embodiment of the present application, a computer program is further provided.

[0301] As an option, the computer program can be applied to a first terminal in an embodiment of the present application, and when the computer program is executed by a computer, it causes the computer to execute the corresponding flow implemented by the first terminal in each method of the embodiment of the present application, and for the sake of brevity, detailed description will be omitted here.

[0302] As an option, the computer program can be applied to a first type device in the embodiments of the present application, and when the computer program is executed by a computer, it causes the computer to execute the corresponding flow realized by the first type device in each method of the embodiments of the present application, and detailed description thereof will be omitted here for the sake of brevity.

[0303] As an option, the computer program can be applied to a second type device in the embodiments of the present application, and when the computer program is executed by a computer, it causes the computer to execute the corresponding flow realized by the second type device in each method of the embodiments of the present application, and detailed description thereof will be omitted here for brevity.

[0304] As an option, the computer program can be applied to a third device in the embodiments of the present application, and when the computer program is executed by a computer, the computer executes the corresponding flow realized by the third device in each method of the embodiments of the present application, and detailed description thereof will be omitted here for brevity.

[0305] As will be appreciated by those skilled in the art, each example unit and algorithm step described in accordance with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Experts may implement the described functions using different methods for each specific application, but such implementations should not be considered as going beyond the scope of the present application.

[0306] Those skilled in the art will clearly understand that for convenience and brevity of explanation, the specific working processes of the above systems, devices and units can refer to the corresponding processes in the above method embodiments, and the description will be omitted here.

[0307] In some embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods can be realized in other ways. For example, the device embodiments described above are merely schematic, and the division of the units is merely a division of logical functions, and may have other distinguishing ways when actually realized, such as multiple units or components may be combined or integrated into another system, or some features may be omitted or not implemented. Meanwhile, the mutual coupling or direct coupling or communication connection shown or discussed may use some interfaces, indirect coupling or communication connection of devices or units, which may be electrical, mechanical, or other types.

[0308] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they may be located in one place or distributed across multiple network units, and some or all of the units can be selected according to actual needs to achieve the objective of the solution of this embodiment.

[0309] Furthermore, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist physically separate, or two or more units may be integrated into one unit.

[0310] The functions may be realized in the form of software functional units and stored in a computer-readable storage medium when sold or used as an independent product. Based on this understanding, the technical solution of the present application, or a part that essentially contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, and the computer software product is stored in a storage medium and includes several instructions, thereby causing a computer device (which may be a personal computer, a server, a network device, etc.) to perform all or some of the steps of the methods described in each embodiment of the present application. The storage medium includes various media that can store program code, such as a USB memory, a portable hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0311] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto, and any modifications or replacements that a person skilled in the art can easily conceive within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application shall be subject to the scope of protection of the claims.

Claims

1. The first terminal receives a first type of positioning reference signal (PRS) and a second type of PRS; The first type PRS is transmitted by a first type device in an active emission manner, and the second type PRS is transmitted by a second type device in a backscattering manner, and the first type PRS and the second type PRS are used to determine location information of the first terminal. A method of wireless communication.

2. the first type device is an active launch AMP device, a second terminal, or a network device; the second type device is a backscatter AMP device; 2. The method of claim 1 .

3. The first type PRS is periodically transmitted, or the first type PRS is transmitted based on a first trigger signal of the first terminal.

3. The method according to claim 1 or 2.

4. The first type PRS is transmitted by the first type device based on first configuration information, and the first configuration information is predefined, or the first configuration information is configured by the first terminal or a network device.

4. The method of claim 3.

5. the first configuration information is configured by the first terminal, and the first configuration information is carried in the first trigger signal; 5. The method of claim 4.

6. The second type PRS is transmitted based on a second trigger signal of the first terminal.

6. The method according to any one of claims 1 to 5.

7. The second type PRS is transmitted by backscattering with respect to the third type PRS.

7. The method according to any one of claims 1 to 6.

8. The third type PRS is transmitted from the first terminal.

8. The method of claim 7.

9. The third type PRS is transmitted by the first terminal based on a first timing advance amount.

9. The method of claim 8.

10. the first timing advance amount is configured by a network device, and the first timing advance amount is determined by the network device based on measurements of the network device and the first terminal; or the first timing advance amount is determined by the first terminal itself; 10. The method of claim 9.

11. A time when the first terminal receives the first type PRS and a time when the first terminal receives the second type PRS are aligned.

11. The method according to any one of claims 7 to 10.

12. The second type PRS and the third type PRS have a configurable frequency offset or a predefined frequency offset.

12. The method of claim 11 .

13. a time when the first terminal receives the first type PRS and a time when the first terminal receives the second type PRS do not overlap; 11. The method according to any one of claims 7 to 10.

14. The second type PRS and the third type PRS have a configurable frequency offset or a predefined frequency offset, or The second type PRS and the third type PRS do not have a frequency offset.

14. The method of claim 13.

15. The third type PRS is transmitted from the first type device.

11. The method according to any one of claims 7 to 10.

16. The third type PRS is periodically transmitted by the first type device, or the third type PRS is transmitted by the first type device based on a third trigger signal of the first terminal.

16. The method of claim 15.

17. The third type PRS and the second type PRS have a configurable frequency offset or a predefined frequency offset.

17. The method according to claim 15 or 16.

18. The second type device transmits a second type positioning reference signal PRS to the first terminal; The second type PRS is transmitted by the second type device in a backscattering manner, and the second type PRS is used to determine location information of the first terminal. A method of wireless communication.

19. the second type device is a backscatter AMP device; 2. The method of claim 1 .

20. The second type PRS is transmitted based on a second trigger signal of the first terminal.

20. The method of claim 18 or 19.

21. The second type PRS is transmitted by backscattering with respect to the third type PRS.

21. The method according to any one of claims 18 to 20.

22. The third type PRS is transmitted from the first terminal.

22. The method of claim 21 .

23. The third type PRS is transmitted by the first terminal based on a first timing advance amount.

23. The method of claim 22.

24. the first timing advance amount is configured by a network device, and the first timing advance amount is determined by the network device based on measurements of the network device and the first terminal; or the first timing advance amount is determined by the first terminal itself; 24. The method of claim 23.

25. A time when the first terminal receives the first type PRS and a time when the first terminal receives the second type PRS are aligned.

25. The method according to any one of claims 21 to 24.

26. The second type PRS and the third type PRS have a configurable frequency offset or a predefined frequency offset.

26. The method of claim 25.

27. a time when the first terminal receives the first type PRS and a time when the first terminal receives the second type PRS do not overlap; 25. The method according to any one of claims 21 to 24.

28. The second type PRS and the third type PRS have a configurable frequency offset or a predefined frequency offset, or The second type PRS and the third type PRS do not have a frequency offset.

28. The method of claim 27.

29. The third type PRS is transmitted from a first type device, the first type device is further used to transmit a first type PRS to the first terminal, and the first type PRS and the second type PRS are used to determine location information of the first terminal.

25. The method according to any one of claims 21 to 24.

30. The third type PRS is periodically transmitted by the first type device, or the third type PRS is transmitted by the first type device based on a third trigger signal of the first terminal.

30. The method of claim 29.

31. The third type PRS and the second type PRS have a configurable frequency offset or a predefined frequency offset.

31. The method of claim 29 or 30.

32. The first type device transmits a first type positioning reference signal (PRS) to the first terminal; The first type PRS is transmitted by the first type device in an active launch manner, and the first type PRS is used to determine location information of the first terminal. A method of wireless communication.

33. The first type device is an active launch AMP device, a second terminal, or a network device; 33. The method of claim 32.

34. The first type PRS is periodically transmitted, or the first type PRS is transmitted based on a first trigger signal of the first terminal.

34. The method of claim 32 or 33.

35. The first type PRS is transmitted by the first type device based on first configuration information, and the first configuration information is predefined, or the first configuration information is configured by the first terminal or a network device.

35. The method of claim 34.

36. the first configuration information is configured by the first terminal, and the first configuration information is carried in the first trigger signal; 36. The method of claim 35.

37. The first type device further includes transmitting a third type PRS to a second type device; The third type PRS is used by the second type device to backscatter to obtain the second type PRS, and the first type PRS and the second type PRS are used to determine location information of the first terminal.

37. The method of any one of claims 32 to 36.

38. The third type PRS is periodically transmitted by the first type device, or the third type PRS is transmitted by the first type device based on a third trigger signal of the first terminal.

38. The method of claim 37.

39. The third type PRS and the second type PRS have a configurable frequency offset or a predefined frequency offset.

39. The method of claim 37 or 38.

40. the second type device is a backscatter AMP device; 40. The method of any one of claims 37 to 39.

41. a third device receiving a fourth type positioning reference signal PRS and a fifth type PRS; The fourth type PRS is transmitted by a first terminal in an active emission manner, and the fifth type PRS is transmitted by a second type device in a backscatter manner; determining location information of the first terminal based on the fourth type PRS and the fifth type PRS; A method of wireless communication.

42. the third device is a second terminal or a network device; the second type device is a backscatter AMP device; 42. The method of claim 41 .

43. The fourth type PRS is transmitted periodically.

43. The method of claim 41 or 42.

44. The fifth type PRS is transmitted by backscattering with respect to the sixth type PRS of the first terminal.

44. The method of any one of claims 41 to 43.

45. The fifth type PRS and the sixth type PRS have a configurable frequency offset or a predefined frequency offset.

45. The method of claim 44.

46. The fifth type PRS is transmitted by the second type device based on a fourth trigger signal of the first terminal.

46. ​​The method of any one of claims 41 to 45.

47. The first terminal transmits a fourth type positioning reference signal (PRS) to the third device; The fourth type PRS is transmitted by an active launch method, and the fourth type PRS is used to determine location information of the first terminal. A method of wireless communication.

48. The third device is a second terminal or a network device; 48. The method of claim 47.

49. The fourth type PRS is transmitted periodically.

49. The method of claim 47 or 48.

50. The method further includes transmitting a sixth type PRS from the first terminal to a second type device; The sixth type PRS is used by the second type device to backscatter and obtain a fifth type PRS, and the fourth type PRS and the fifth type PRS are used to determine location information of the first terminal.

50. The method of any one of claims 47 to 49.

51. The fifth type PRS and the sixth type PRS have a configurable frequency offset or a predefined frequency offset.

51. The method of claim 50.

52. the second type device is a backscatter AMP device; 52. The method of claim 50 or 51.

53. The fifth type PRS is transmitted by the second type device based on a fourth trigger signal of the first terminal.

53. The method of any one of claims 50 to 52.

54. transmitting a fifth type positioning reference signal (PRS) from the second type device to the third device; The fifth type PRS is transmitted in a backscattering manner, and the fifth type PRS is used to determine location information of the first terminal. A method of wireless communication.

55. the third device is a second terminal or a network device; the second type device is a backscatter AMP device; 55. The method of claim 54.

56. The fifth type PRS is transmitted by backscattering with respect to the sixth type PRS of the first terminal.

56. The method of claim 54 or 55.

57. The fifth type PRS and the sixth type PRS have a configurable frequency offset or a predefined frequency offset.

57. The method of claim 56.

58. The fifth type PRS is transmitted by the second type device based on a fourth trigger signal of the first terminal.

58. The method of any one of claims 54 to 57.

59. a communication unit; The communication unit is used to receive a first type of positioning reference signal (PRS) and a second type of PRS, the first type of PRS being transmitted by a first type of device in an active emission manner, and the second type of PRS being transmitted by a second type of device in a backscattering manner, and the first type of PRS and the second type of PRS being used to determine location information of the communication device 400. Communication devices.

60. a communication unit; The communication unit is used to transmit a second type of positioning reference signal (PRS) to a first terminal, the second type of PRS being transmitted by the communication device 500 in a backscattering manner, and the second type of PRS being used to determine location information of the first terminal. Communication devices.

61. Includes a communication unit The communication unit is used to transmit a first type of positioning reference signal (PRS) to a first terminal, the first type of PRS being transmitted by the communication device 600 in an active emission manner, and the first type of PRS being used to determine location information of the first terminal. Communication devices.

62. a communication unit and a processing unit, The communication unit is used to receive a fourth type positioning reference signal (PRS) and a fifth type PRS, the fourth type PRS being transmitted by a first terminal in an active emission manner, and the fifth type PRS being transmitted by a second type device in a backscattering manner; The processing unit is used to determine location information of the first terminal based on the fourth type PRS and the fifth type PRS. Communication devices.

63. a communication unit; The communication unit is used to transmit a fourth type of positioning reference signal (PRS) to a third device, the fourth type of PRS being transmitted by an active emission method, and the fourth type of PRS being used to determine location information of the communication device 800. Communication devices.

64. a communication unit; The communication unit is used to transmit a fifth type positioning reference signal (PRS) to a third device, the fifth type PRS being transmitted in a backscattering manner, and the fifth type PRS being used to determine location information of the first terminal; Communication devices.

65. a processor and a memory, the memory is used to store a computer program, and the processor is used to call and execute the computer program stored in the memory so that the communication device performs the method of any one of claims 1 to 17, the method of any one of claims 18 to 31, the method of any one of claims 32 to 40, the method of any one of claims 41 to 46, the method of any one of claims 47 to 53, or the method of any one of claims 54 to 58. Communication devices.

66. a processor; the processor is used to call and execute a computer program from memory such that a device to which the chip is attached performs the method of any one of claims 1 to 17, the method of any one of claims 18 to 31, the method of any one of claims 32 to 40, the method of any one of claims 41 to 46, the method of any one of claims 47 to 53, or the method of any one of claims 54 to 58. Tips.

67. A computer-readable storage medium used to store a computer program, The computer program causes a computer to carry out the method of any one of claims 1 to 17, the method of any one of claims 18 to 31, the method of any one of claims 32 to 40, the method of any one of claims 41 to 46, the method of any one of claims 47 to 53 or the method of any one of claims 54 to 58. A computer-readable storage medium.

68. containing computer program instructions, The computer program instructions cause a computer to perform the method of any one of claims 1 to 17, the method of any one of claims 18 to 31, the method of any one of claims 32 to 40, the method of any one of claims 41 to 46, the method of any one of claims 47 to 53, or the method of any one of claims 54 to 58. Computer program products.

69. causing a computer to perform a method according to any one of claims 1 to 17, a method according to any one of claims 18 to 31, a method according to any one of claims 32 to 40, a method according to any one of claims 41 to 46, a method according to any one of claims 47 to 53 or a method according to any one of claims 54 to 58; Computer program.

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