Wireless communication method, terminal device, and communication device

Abstract

Provided are a wireless communication method, a terminal device, and a communication device. The method comprises: a first device sends a first signal and a second signal to a first terminal device, wherein a relationship between the phase of the first signal and the phase of the second signal on the first device side is a first relationship, the first signal and the second signal are used for determining first phase information, the first phase information comprises a received phase difference between the first signal and the second signal on the first terminal device side, a position where the first device sends the first signal is a first position, a position where the first device sends the second signal is a second position, and the first position is different from the second position. The calculation of the received phase difference can be related to the relationship (i.e., the first relationship) between the first signal and the second signal on a sending side, so that the calculation of the received phase difference is more accurate.

Description

Wireless communication method, terminal device, and communication device Technical Field

[0001] The present application relates to the field of communication technology, and more specifically, to a wireless communication method, a terminal device, and a communication device. Background Art

[0002] When performing positioning, measuring the phase information of the received signal can more accurately determine the distance between the signal sender and receiver. During phase estimation, the signal phase may be affected by factors such as noise and hardware processing at the transmitter and receiver, which can lead to uncertainty in the phase estimation. Relevant technologies have difficulty eliminating the influence of the transmitter on phase measurement. To eliminate the influence of factors such as clock error, hardware delay, and initial phase on phase measurement at the transmitter and obtain accurate phase measurement results, the transmitter signal must be designed.

[0003] Summary of the Invention

[0004] The present application provides a wireless communication method, a terminal device, and a communication device. The following introduces various aspects involved in the present application.

[0005] In a first aspect, a wireless communication method is provided, the method comprising: a first device sends a first signal and a second signal to a first terminal device; wherein, a relationship between a phase of the first signal and a phase of the second signal on the first device side is a first relationship, the first signal and the second signal are used to determine first phase information, the first phase information comprises a received phase difference between the first signal and the second signal on the first terminal device side, the position where the first device sends the first signal is a first position, the position where the first device sends the second signal is a second position, and the first position and the second position are different.

[0006] In a second aspect, a wireless communication method is provided, the method comprising: a first terminal device receives a first signal and a second signal sent by a first device; wherein, the relationship between the phase of the first signal and the phase of the second signal on the first device side is a first relationship, the first signal and the second signal are used to determine first phase information, the first phase information includes a received phase difference between the first signal and the second signal on the first terminal device side, the position where the first device sends the first signal is a first position, the position where the first device sends the second signal is a second position, and the first position and the second position are different.

[0007] According to a third aspect, a communication device is provided, which is a first device and includes: a first sending unit for sending a first signal and a second signal to a first terminal device; wherein the relationship between the phase of the first signal and the phase of the second signal on the first device side is a first relationship, the first signal and the second signal are used to determine first phase information, the first phase information includes a received phase difference between the first signal and the second signal on the first terminal device side, the position where the first device sends the first signal is a first position, the position where the first device sends the second signal is a second position, and the first position and the second position are different.

[0008] In a fourth aspect, a terminal device is provided, which is a first terminal device, and the terminal device includes: a first receiving unit, used to receive a first signal and a second signal sent by a first device; wherein, the relationship between the phase of the first signal and the phase of the second signal on the first device side is a first relationship, the first signal and the second signal are used to determine first phase information, the first phase information includes the receiving phase difference between the first signal and the second signal on the first terminal device side, the position where the first device sends the first signal is the first position, the position where the first device sends the second signal is the second position, and the first position and the second position are different.

[0009] In a fifth aspect, a communication device is provided, comprising a processor and a memory, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the communication device executes part or all of the steps in the method of the first aspect.

[0010] In a sixth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store one or more computer programs, and the processor is used to call the computer program in the memory so that the terminal device executes part or all of the steps in the method of the second aspect.

[0011] In a seventh aspect, an embodiment of the present application provides a communication system, which includes the above-mentioned terminal device and / or communication device. In another possible design, the system may also include other devices that interact with the terminal device or communication device in the solution provided in the embodiment of the present application.

[0012] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program, and the computer program enables a terminal device and / or a communication device to execute part or all of the steps in the methods of the above aspects.

[0013] In a ninth aspect, embodiments of the present application provide a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, wherein the computer program is operable to cause a terminal device and / or a communication device to perform some or all of the steps of the methods of the various aspects described above. In some implementations, the computer program product may be a software installation package.

[0014] In the twelfth aspect, an embodiment of the present application provides a chip, which includes a memory and a processor. The processor can call and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

[0015] For the same device, some delays at the transmitting end that affect phase estimation are relatively constant, such as hardware delays. Therefore, it can be assumed that these delays of the first device remain almost unchanged at the moment of sending the first signal and the moment of sending the second signal. By taking the difference at the receiving end, the effect of the relatively constant delay at the transmitting end on the phase can be eliminated. In addition, the calculation of the received phase difference can be related to the relationship between the first signal and the second signal at the transmitting side (i.e., the first relationship), thereby making the calculation of the received phase difference more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a schematic diagram of a wireless communication system used in an embodiment of the present application.

[0017] FIG2 is a schematic flowchart of a wireless communication method provided in an embodiment of the present application.

[0018] FIG3 is a schematic structural diagram of a communication device provided in an embodiment of the present application.

[0019] FIG4 is a schematic structural diagram of a terminal device provided in an embodiment of the present application.

[0020] FIG5 is a schematic structural diagram of a device for communication provided in an embodiment of the present application. DETAILED DESCRIPTION

[0021] The technical solution in this application will be described below with reference to the accompanying drawings.

[0022] Communication System

[0023] FIG1 illustrates a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include communication devices. The communication devices may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120.

[0024] FIG1 exemplarily shows a network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0025] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0026] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0027] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in vehicle-to-everything (V2X) or device-to-device (D2D). For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through a base station.

[0028] The network device in the embodiments of the present application may be a device for communicating with a terminal device. The network device may also include an access network device. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within the coverage area. The access network device may also be referred to as a radio access network device or a base station. The access network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects the terminal device to a wireless network. Access network equipment can broadly cover various names as follows, or replace the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master eNB (MeNB), secondary eNB (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip used to be set in the aforementioned device or apparatus. A base station may also be a mobile switching center and a device that performs base station functions in D2D, V2X, and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. A base station may support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the access network device.

[0029] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0030] The communication equipment involved in a wireless communication system can include not only access network equipment and terminal equipment, but also core network elements. Core network elements can be implemented by devices, that is, core network elements are core network devices. It is understood that core network devices can also be a type of network equipment.

[0031] The core network elements in the embodiments of the present application may include network elements that process and forward user signaling and data. For example, the core network equipment may include core network access and mobility management function (AMF), session management function (SMF), user plane gateway, location management function (LMF) and other core network equipment. Among them, the user plane gateway may be a server with functions such as mobility management, routing, and forwarding of user plane data, generally located on the network side, such as a serving gateway (SGW) or a packet data network gateway (PGW) or a user plane network element function entity (UPF). Of course, the core network may also include other network elements, which are not listed here one by one.

[0032] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0033] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0034] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0035] Non-terrestrial networks (NTN)

[0036] NTN can provide communication services to users in a non-terrestrial manner. That is, NTN equipment (e.g., non-terrestrial network equipment) such as satellites (SAT) and UAS platforms can communicate with terminal devices.

[0037] Terrestrial network communications are difficult to deploy in locations like oceans, mountains, and deserts. Furthermore, due to the cost of deploying and operating communications equipment, terrestrial communications typically don't cover sparsely populated areas. NTN offers many advantages over terrestrial networks. First, NTN networks are not restricted by geographic location. In theory, satellites orbit the Earth, allowing satellite coverage to reach every corner of the globe. Furthermore, non-terrestrial network equipment can cover areas far larger than those covered by terrestrial equipment. This means that NTN cells can cover a much wider area.

[0038] Non-terrestrial network equipment may move relative to the Earth, so in an NTN, cells may move across the Earth's surface. This phenomenon can make it difficult for network equipment to reliably determine the location of a terminal device, or even the country to which it belongs, making it difficult for the NTN to support regulatory services. Therefore, relying solely on global navigation satellite system (GNSS) reports from terminal devices is unreliable, and combining GNSS reports with network-based solutions can improve reliability. Therefore, network operators should cross-check the terminal device's location in addition to the terminal's reported GNSS position based on satellite navigation positioning to meet potential regulatory requirements.

[0039] Positioning technology

[0040] As communication technologies mature, some communication systems (such as 5G systems) can implement an increasing number of communication algorithms. These algorithms can include high-speed information transmission and positioning technologies. For example, the NTN system described above can not only achieve terminal device positioning through GNSS, but also through communication algorithms and the use of non-terrestrial communication devices such as satellites to achieve terminal device positioning, thus meeting the needs of the NTN system.

[0041] Some wireless communication systems may include a server. The location coordinates of a terminal device may be calculated in the server. Such a server may also be called a positioning server.

[0042] The positioning server may be a network device with a positioning function provided by an operator. The network device with a positioning function may be a core network device or a cloud server. For example, the positioning server involved in the embodiment of the present application may include one or more of a location management function (LMF), a location management component (LMC), and a local location management function (LLMF) located in the network device, and the embodiment of the present application is not limited to this.

[0043] The positioning system can determine the position of the object to be located (hereinafter referred to as the target) through geometric positioning methods. Geometric positioning can determine the position of the target by the distance between the target and a reference point. The distance can be determined by the propagation time of the wireless signal or by the angle between the target and the reference point. For example, the positioning system can calculate the position of the target using triangulation (also known as triangulation) or polygonal method (also known as multilateration). Triangulation usually requires obtaining the angle between the target and at least two reference points.

[0044] The geometric principles of geometric positioning can involve the basic concepts of triangulation and multilateration. Triangulation is a method of determining position by measuring the sides and angles of a triangle. In positioning, it is common to use the angle and side length information of a triangle for measurement. Multilateration is a method of determining position by measuring the internal and external angles of a polygon. Multilateration methods generally require at least three reference points with known locations and calculate the target's position by measuring the angles between the target and these reference points. For example, trilateration uses three reference points with known locations to calculate the target's position by measuring the side lengths between the target and these reference points. This method is commonly used in wireless positioning and indoor positioning systems.

[0045] Based on the geometric principles of positioning, a user can be located by measuring the signals from different transmitters. The locations of the different transmitters are the locations of the reference points. Alternatively, a user can be located using multiple signals transmitted by the same transmitter. The transmitter can transmit signals from multiple different locations, and these multiple locations serve as the locations of the reference points. For example, based on the signal transmitted by the transmitter at a certain location, the distance between the user and that location can be determined; based on the signal transmitted by the transmitter at another location, the distance between the user and the other location can be determined. Based on the distances between the user and multiple locations, the user's location can be determined.

[0046] Antenna array

[0047] Antenna arrays transmit or receive signals by coordinating multiple antennas. By adjusting the antennas in an antenna array, the antenna array can be formed into specific geometric shapes in space, such as linear arrays, uniform matrices, and circular arrays. Antenna arrays can improve the performance of communication systems by processing multipath propagation and implementing anti-interference algorithms. In addition, antenna arrays allow for the simultaneous transmission of multiple independent signals on the same frequency, thereby improving spectral efficiency. For example, beamforming technology allows antenna arrays to form beams in specific directions by adjusting the phase and amplitude of each antenna, thereby increasing the system's sensitivity in that specific direction and reducing interference in other directions. In radar and sensor applications, antenna arrays can achieve high-resolution target detection and tracking through beamforming.

[0048] Antenna array designs can be tailored to specific application requirements, providing greater flexibility. In communications systems, antenna arrays can be used in multiple-input, multiple-output (MIMO) systems (also known as multi-antenna systems) to improve data transmission rates and system reliability. In radar systems, antenna arrays can be used to implement phased array radars, offering advantages such as fast scanning, target tracking, and anti-interference capabilities. In wireless sensor networks, antenna arrays can be used for applications such as positioning, directional propagation, and energy focusing.

[0049] Antenna arrays, in general, are a powerful technology used extensively in wireless communications, radar, sensing, and other wireless applications.

[0050] Phase estimation

[0051] When performing positioning, measuring the phase information of the received signal can more accurately determine the distance between the signal sender and receiver. Phase information can be obtained through phase estimation. For various reasons, the phase of the signal may be affected by noise, which can lead to uncertainty in the phase estimation.

[0052] For an NTN system, factors affecting the phase estimation of a signal transmitted by an NTN device may come from one or more of the following: the propagation environment, the receiving system, and the NTN device itself. The following description takes a satellite as an example.

[0053] The propagation environment of satellite signals includes the Earth's atmosphere. The ionosphere and troposphere in the atmosphere cause changes in the refraction and propagation speed of electromagnetic waves, thereby affecting the signal phase. These atmospheric effects are commonly referred to as atmospheric delay. For some navigation systems (such as the Global Positioning System (GPS) and the BeiDou Satellite Navigation System), atmospheric delay is a significant source of error in phase estimation.

[0054] Multipath refers to the phenomenon in which a signal propagates along different paths to a receiving device (also known as a receiving station, recipient, receiver, or end point), causing multiple versions of the signal to arrive simultaneously, resulting in phase distortion. Multipath can affect phase estimation.

[0055] Clock errors within the receiver can also affect phase estimation. Even if the receiver's clock is very accurate, clock differences may still exist due to various reasons (such as temperature changes, clock drift, etc.).

[0056] The delay introduced by the hardware in the satellite system (antennas, amplifiers, mixers, transmission lines, etc.) will affect the phase estimation of the signal.

[0057] The motion of the satellite causes the Doppler effect, which introduces changes in the signal frequency and thus affects the accuracy of the phase estimation.

[0058] The calibration accuracy of the signal receiving device directly affects the accuracy of the phase estimation. The calibration quality of each component in the signal receiving device will affect the phase of the signal.

[0059] The influence of the above factors may lead to phase estimation errors. Therefore, in applications such as satellite communications and navigation, a series of technical means are usually adopted to reduce these errors, such as differential technology and beamforming.

[0060] Differential technology is a method used to reduce or eliminate common errors such as atmospheric delay. It is widely used in satellite navigation systems and other applications that require high-precision phase measurement.

[0061] Phase differential technology can include single-point phase differential and double-point phase differential.

[0062] Single-point phase differencing can eliminate some of the errors between two receiving stations (a reference receiver and a primary receiver) by using a reference receiver within the receiving station. A reference receiver is generally assumed to be unaffected by errors such as atmospheric delay, so its observations can be used to calibrate the observations of the primary receiver. By differentiating the observations from the primary receiver with those from the reference receiver, some common errors, such as atmospheric delay and receiver clock differences, can be eliminated. Single-point phase differencing is typically suitable for applications over relatively short distances.

[0063] Two-point differencing takes into account the differences between the two receiving stations, allowing the spatial differences to be used to calibrate for errors such as atmospheric delay. Two-point differencing is typically applied to two relatively distant receiving stations. Because it accounts for spatial variations, rather than just single-point calibration, it can provide higher accuracy.

[0064] Through differential technology, errors such as atmospheric delay can be eliminated to a certain extent, thereby improving the accuracy of phase measurement. This has important applications in achieving high-precision satellite navigation, Earth observation, and scientific research.

[0065] Differential technology allows the receiver to estimate the phase of signals from different satellites and subtract the estimated phases, thereby eliminating receiver clock errors, phase errors introduced by receiver hardware, and atmospheric errors. However, this mostly eliminates receiver errors; it cannot eliminate the effects of satellite clock differences, initial satellite phases, and satellite hardware delays on phase measurements.

[0066] Therefore, it is difficult to eliminate the influence of the transmitter on the phase measurement. For example, it is difficult to eliminate the influence of factors such as clock difference, hardware delay, and initial phase on the phase measurement, making it difficult to obtain accurate phase measurement results.

[0067] FIG2 is a schematic flowchart of a wireless communication method provided in an embodiment of the present application to solve the above-mentioned problem.

[0068] The method shown in FIG2 can be performed by a first terminal device and a first device. The first device can be a mobile device. For example, the first device can include an NTN device. Exemplarily, the first device can include a satellite. It should be noted that the mobile device can be a device that moves relative to the ground or the earth.

[0069] The method shown in FIG. 2 may include step S210 .

[0070] Step S210: The first device sends a first signal and a second signal to a first terminal device.

[0071] The location where the first device transmits the first signal may be a first location, and the location where the first device transmits the second signal may be a second location. The first location and the second location may be different. In other words, the first signal and the second signal may be signals transmitted by the same transmitter at different locations. Transmitting signals at different locations allows the receiver to detect the received signals and obtain more spatial information. In other words, signals transmitted at different locations carry more spatial information.

[0072] It should be noted that the first position and the second position being different may mean that the two positions are different with respect to the ground or the earth. In other words, the first device may be a device that moves relative to the ground.

[0073] In some embodiments, the first signal is sent at a first moment, and the second signal is sent at a second moment. The first moment and the second moment are different. That is, the first signal and the second signal are sent at different times. Since the first device may be mobile, if the first signal and the second signal are sent at different times, the locations at which the first device sends the first signal and the second signal may also be different.

[0074] It should be noted that this application does not limit the order in which the first signal and the second signal are sent. For example, the first signal can be sent earlier or later than the second signal. In other words, the first moment can be earlier or later than the second moment.

[0075] The first signal and / or the second signal may be a signal capable of performing phase estimation. Exemplarily, the first signal and / or the second signal may include a signal used for positioning. The signal used for positioning may, for example, be a positioning reference signal (PRS). For example, the first signal may include a first PRS. For another example, the second signal may include a second PRS. The signal used for positioning may, for example, be a sounding reference signal (SRS). For example, the first signal may include a first SRS. For another example, the second signal may include a second SRS.

[0076] In some embodiments, the first device may transmit multiple signals, which may include a first signal and a second signal. For example, the first signal and the second signal may be two adjacent signals in the multiple signals. Alternatively, the first signal and the second signal may be separated by at least one signal. The multiple signals may be transmitted periodically, i.e., the intervals between adjacent signals in the multiple signals may be equal. The multiple signals may also be transmitted aperiodically.

[0077] The first signal and the second signal may be used to determine first phase information. The first phase information may include a received phase difference between the first signal and the second signal at the first terminal device side.

[0078] Exemplarily, the first terminal device may detect the first signal and the second signal to estimate their phases. For example, the first terminal device may determine phase information based on the time at which the first signal and / or the second signal arrive at the first terminal device. Exemplarily, by detecting the first signal, the first terminal device may obtain phase information of the first signal. By detecting the second signal, the first terminal device may obtain phase information of the second signal. The phase information may include the detected phase. By calculating the difference between the phase of the first signal and the phase of the second signal, a received phase difference may be obtained.

[0079] It should be noted that obtaining the difference between the phase of the first signal and the phase of the second signal may include: subtracting the phase of the second signal from the phase of the first signal; or subtracting the phase of the first signal from the phase of the second signal.

[0080] It can be seen that the received phase difference is the phase difference obtained based on the phase of the first signal detected by the first terminal device and the phase of the second signal. Correspondingly, at the transmitting end, the difference between the transmit phase of the first signal and the transmit phase of the second signal can be called the transmit phase difference.

[0081] It should be noted that the phase of the first signal or the second signal can be used as a reference phase to calculate the received phase difference. In other words, for any of the multiple signals received by the first terminal device, the received phase difference between the corresponding signal and the reference phase can be calculated using the reference phase. The reference phase or the signal corresponding to the reference phase can be determined by the first terminal device itself or indicated by a network device.

[0082] It is understood that the first phase information proposed in this application can include the received phase difference between multiple signals transmitted from the same transmitter at different locations. Because the transmitters are the same device, the received phase difference obtained based on this application is not affected by transmitter latency, thereby achieving accurate measurement. The following uses the example of a satellite as the first device to analyze and illustrate how this application eliminates transmitter hardware latency errors.

[0083] Different satellites have hardware differences, resulting in variations in hardware delay errors. If this hardware delay error is not accurately compensated or corrected, the calculated phase difference will introduce a corresponding error, affecting the accuracy of the measurement results. Precise clock synchronization and other measures can be used to minimize the impact of hardware delay errors. However, it is difficult for the clocks of different satellites to be completely consistent, so some residual hardware delay error may still exist.

[0084] Hardware latency is typically relatively constant for the same satellite, as it is primarily caused by signal propagation and processing time, factors that are unlikely to change significantly over short periods of time. The following examples illustrate hardware latency, including transmission latency, signal processing latency, and storage latency. Transmission latency refers to the time it takes for a signal to travel from a ground station to a satellite and back again. This is primarily determined by the speed of signal propagation—the speed at which electromagnetic waves propagate through space. Because the speed of light is a constant and does not change over time, transmission latency is relatively stable. Signal processing latency refers to the time required for signal processing on the satellite. Signal processing can include decoding, processing sensor data, and executing instructions. It is understood that signal processing latency is typically relatively constant, changing only when hardware or software on the satellite is upgraded or modified. Storage latency refers to the time it takes for a signal to remain in storage, if available, awaiting processing. Storage latency is also typically relatively stable unless the storage media or system is modified.

[0085] For the same device, some delays affecting phase estimation on the transmitting end, such as hardware delays, are relatively constant. Therefore, it can be assumed that these delays remain nearly constant between the time the first signal is transmitted and the time the second signal is transmitted. When calculating the received phase difference between the first and second signals, the difference can be used to eliminate the influence of these delays on the transmitting end, thereby ensuring that the received phase difference is not affected by delays such as transmitting end hardware delays.

[0086] In particular, errors caused by hardware delays are more pronounced in complex environments. Therefore, this application not only accurately models and corrects hardware delay errors to achieve high-precision measurements, but also achieves relatively accurate measurement results in complex environments. In other words, this application can also be used in high-precision measurement applications.

[0087] In addition, based on the present application, the first device can construct an equivalent antenna array by moving, that is, the first signal and the second signal can be signals sent by different antennas in the equivalent antenna array. In other words, for the same antenna, by sending signals at different positions, the same antenna at different positions can be coordinated to form an equivalent antenna array. By constructing an equivalent antenna array, technical solutions based on antenna array implementation (such as beamforming) can be used to improve the performance of the communication system.

[0088] To achieve the desired effect of an array antenna, the signals sent by the transmitter at different locations must be correlated. The following explanation is from the perspective of the receiver. The received signal at the receiver can be: y(t) = h(t) * s(t) + n(t); where y(t) represents the received signal, h(t) represents the channel impulse response, s(t) represents the transmitted signal, and n(t) represents noise. The channel propagation delay is reflected in the channel impulse response. The receiver can perform a phase estimate on the received signal y(t). As can be seen from the above formula, the phase estimate of y(t) includes both the effects of the channel propagation delay on the phase and the phase influence of the transmitted signal s(t). When calculating the received phase difference between the first transmitted signal s(t1) and the second transmitted signal s(t2), if the transmitted signals of the first and second signals are identical, the transmitted signal can be eliminated when calculating the received phase difference between the first and second signals. However, if the first and second signals have different transmission signals, the difference in the received phases of the first and second signals will contain information about the phase difference between the transmitted signals s(t1) and s(t2). In this case, the received phase difference cannot accurately reflect the propagation delay. Therefore, when the transmitter transmits the first and second signals, it is necessary to coordinate the signal phases of the first and second signals.

[0089] The relationship between the phase of the first signal and the phase of the second signal on the first device side can be a first relationship. In other words, the relationship between the phase of the first signal when transmitting the first signal and the phase of the second signal when transmitting the second signal can be a first relationship. In other words, the relationship between the phase of the first signal at the transmitting antenna and the phase of the second signal at the transmitting antenna can be a first relationship. In other words, the relationship between the phase of the first signal when transmitted by the transmitting antenna and the phase of the second signal when transmitted by the transmitting antenna can be a first relationship. Alternatively, the relationship between the transmission phase of the first signal and the transmission phase of the second signal can be a first relationship.

[0090] The received phase difference may be related to the first relationship. The first relationship may be used to more accurately determine the received phase difference. The first relationship is described below.

[0091] In some embodiments, the first device may send auxiliary information to the first terminal device. The auxiliary information may be used to indicate the first relationship. For example, the first device may obtain the first relationship on its side. Based on the obtained first relationship, the first device may indicate the first relationship to the first terminal device via the auxiliary information.

[0092] Optionally, the auxiliary information may be carried in higher layer signaling. For example, the auxiliary information may be carried in one or more of the following messages: RRC message, MAC CE.

[0093] In some embodiments, the first relationship may include one or more of the following: a transmission phase difference between the first signal and the second signal at the first device side; and an equivalent time difference corresponding to the transmission phase difference.

[0094] The difference between the transmit phase of the first signal and the transmit phase of the second signal may be a transmit phase difference. When the first device transmits the first signal and the second signal, the transmit phase of the first signal and the transmit phase of the second signal may be obtained, and the transmit phase difference may be determined. In some embodiments, the first device may directly indicate the transmit phase difference to the first terminal device via auxiliary information.

[0095] In some embodiments, the transmission phase difference may correspond to the equivalent time difference. The first device may indicate the equivalent time difference to the first terminal device through auxiliary information. The first terminal device may determine the transmission phase difference based on the equivalent time difference.

[0096] Optionally, the transmission phase difference and the equivalent time difference may satisfy the following equation: transmission phase difference = mod(2πf*equivalent time difference, 2π). Where f represents the carrier frequency of the first signal or the second signal. mod() may represent a modulo operation.

[0097] It is understandable that the first device can indicate the first relationship through auxiliary information. For example, on the side of the first device that sends the first signal and the second signal, the phase of the first signal and the phase of the second signal may not be limited. The first device can measure the transmission phase of the first signal and the transmission phase of the second signal and determine the first relationship. The first device can inform the first terminal device of the determined first relationship through auxiliary information, so that the first terminal device adjusts the reception phase difference according to the first relationship indicated by the auxiliary information. Therefore, the indication of the auxiliary information can make the signal sent by the first device more flexible, thereby reducing the signal processing process of the first device.

[0098] It should be noted that, for multiple signals, corresponding auxiliary information may be sent for any two signals, thereby dynamically indicating the phase relationship between the multiple signals at the transmitting end.

[0099] In some embodiments, the first relationship can be configured by a network device. The network device may include one or more of the following: a first device, a serving base station, a neighboring base station, a positioning server, etc. When the network device configures the first relationship for the first terminal device, the first terminal device may determine the receive phase difference based on the first relationship. If the network device does not include the first device, the network device may configure the first relationship for the first device. The first device may send the first signal and the second signal according to the first relationship, that is, the first device and the first terminal device may reach an agreement on the first relationship, thereby achieving accurate communication or positioning.

[0100] In some embodiments, the first relationship may be defined by a protocol. The first device may send the first signal and the second signal according to the first relationship defined by the protocol. The first terminal device may determine the reception phase difference according to the first relationship defined by the protocol.

[0101] In some embodiments, the first relationship may include: a phase of the first signal and a phase of the second signal being the same on the first device side.

[0102] When the phase of the first signal and the phase of the second signal are the same on the first device side, the first terminal device can directly obtain the received phase difference based on the detected phase. In other words, the first terminal device does not need to adjust the received phase difference. Therefore, this technical solution can simplify the processing on the first terminal device side.

[0103] The signal received by the first terminal device (including the first signal or the second signal) may satisfy the following equation: y(t) = h(t) * s(t) + n(t). Here, y(t) may represent the received signal, h(t) may represent the channel impulse response, s(t) may represent the transmitted signal, and n(t) may represent noise. Channel propagation delay may be reflected in the channel impulse response.

[0104] Therefore, when the first terminal device performs phase estimation on the received signal y(t), the phase information obtained by the phase estimation can include the propagation delay and the phase difference of the signal. When calculating the phase difference between the received signals of the first signal and the second signal, if the transmission phase of the first signal and the transmission phase of the second signal are the same, the transmission signal can be eliminated when the difference between the received phases of the first signal and the second signal is calculated, thereby eliminating the constant delay of the transmitting end. However, if the transmission phase of the first signal and the transmission phase of the second signal are different, then the difference between the phases of the first signal and the second signal will include the phase information of the transmitted signal, and this difference cannot accurately reflect the content of the propagation delay.

[0105] In some embodiments, the first relationship may include the phase of the first signal and the phase of the second signal being time-continuous or phase-continuous on the first device side. Based on the time continuity or phase continuity, the first terminal device may adjust the received phase difference so that the received phase difference accurately reflects the propagation delay.

[0106] Optionally, the phase of the first signal and the phase of the second signal may be continuous in time on the first device side and may satisfy: in, represents the phase of the first signal on the first device side, represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, and Δt represents the time interval between the first signal and the second signal. The time interval can refer to the time difference between the time when the first signal is transmitted and the time when the second signal is transmitted.

[0107] In some embodiments, when the phase of the first signal and the phase of the second signal on the first device are different, the receive phase difference can be adjusted to accurately reflect the propagation delay. For example, the receive phase difference can satisfy: or, in, Indicates the receiving phase difference, Indicates the phase of the first signal on the first device side, represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, and Δt represents the time interval between the first signal and the second signal. For example, when the phase difference is obtained by subtracting the phase of the second signal from the phase of the first signal, the received phase difference can satisfy: Or, when the phase difference is obtained by subtracting the phase of the first signal from the phase of the second signal,

[0108] In some embodiments, the position of the first terminal device can be calculated based on the first phase information.

[0109] In some embodiments, the first terminal device may send capability information to the second device. The capability information may be used to indicate whether the first terminal device supports calculating the received phase difference between the first signal and the second signal. In other words, the first terminal device may report whether it supports calculating the difference in phase estimates for different signals from the same device.

[0110] Optionally, when the first terminal device's moving speed is less than or equal to a first speed threshold, the first terminal device may support calculating the received phase difference between the first signal and the second signal; and / or, when the first terminal device's moving speed is greater than the first speed threshold, the first terminal device may not support calculating the received phase difference between the first signal and the second signal. The first speed threshold is a positive number. In other words, when the first terminal device is not moving at high speed, the first terminal device can support calculating the received phase difference between the first signal and the second signal.

[0111] When the first terminal device is moving at high speed, the user's position has changed significantly when the first terminal device detects the first and second signals. When the position changes significantly, the scattering environment around the first terminal device also changes significantly. Therefore, the phase correlation between the received first signal and the received second signal is low. Even if a received phase difference is obtained, it cannot reflect the distance difference between the first and second terminal devices. As a result, the received phase difference cannot be used to estimate the distance and, therefore, the position of the first terminal device.

[0112] In some embodiments, a first terminal device may receive first information. The first information may be sent by the first device. The first information is described below.

[0113] In some implementations, the first information may configure the first signal and / or the second signal. In this case, the first information may, for example, configure one or more of the following information: the time at which the first signal is sent, the time at which the first signal is received, the time at which the second signal is sent, the time at which the second signal is received, an identifier of the first signal, and an identifier of the second signal.

[0114] When the first signal and the second signal are of the same type, for example, when both the first signal and the second signal are PRS signals, the first information can be used to configure the transmission time and / or reception time of the signal of that type. Exemplarily, the first information can be used to configure the transmission time and / or reception time of multiple PRS signals.

[0115] In some embodiments, the reception time may also be referred to as a detection timestamp. That is, the reception time of the first signal may be referred to as the detection timestamp of the first signal; and the reception time of the second signal may be referred to as the detection timestamp of the second signal.

[0116] As described above, the first signal and the second signal may belong to multiple signals that are transmitted periodically. In this case, the first information may indicate the transmission period of the multiple signals. For example, the transmission period may include a transmission interval and / or a transmission offset.

[0117] According to the first information, the first terminal device may receive and detect the first signal and / or the second signal. In other words, based on the first information, the first terminal device may execute step S210.

[0118] It should be noted that the sending time or receiving time in the present application can be represented by one or more of the following: absolute time, first time unit. Absolute time can be, for example, world time. For example, the first information can indicate that the sending time of the first signal is 14:01:23:01 microseconds on December 19, 2023. The absolute time can be in the form of a timestamp. The first time unit in the first information may include one or more of the following: frame, subframe, orthogonal frequency division multiplexing (OFDM) symbol. For example, the first information may indicate one or more of the frame number, subframe number and OFDM symbol index of the sending time of the second signal.

[0119] In some implementations, the first information may indicate whether the first terminal device needs to calculate a received phase difference between the first signal and the second signal.

[0120] In some implementations, the first information may indicate whether the multiple signals sent by the first device support phase estimation and differencing. For example, the multiple signals may all be signals used for positioning, and the first information may indicate whether the signals sent by the first device for positioning support phase estimation and differencing.

[0121] In some implementations, the first information may indicate whether the first signal and the second signal support phase estimation differencing.

[0122] In some embodiments, the first terminal device may determine the first phase information on its own. In some embodiments, the first terminal device may send the phase information of the first signal and the phase information of the second signal to another device (e.g., the second device described below) so that the other device can determine the first phase information.

[0123] The received phase difference between the first and second signals can be used to locate the first terminal device. If the first terminal device independently determines the first phase information, it can independently determine its own position based on the first phase information. If the first terminal device transmits the first phase information to other devices, the other devices (such as the second device described below) can calculate the position of the first terminal device.

[0124] In some embodiments, the method shown in Figure 2 may further include step S220. Step S220 may be performed by the first terminal device and the second device.

[0125] Step S220: The first terminal device sends one or more of the first phase information, the phase information of the first signal, and the phase information of the second signal to the second device.

[0126] In some embodiments, the second device may include a destination, i.e., a final recipient of the signal. In some embodiments, the second device may include a forwarding device (or a relay device). For example, the second device may forward the received first phase information to another device.

[0127] The second device may include one or more of the following: a positioning solution unit, a positioning server, a second terminal device serving as a central node, and a first base station.

[0128] The positioning solution unit can participate in calculating the position of the first terminal device. The output of the positioning solution unit may include one or more of the following: the position of the first terminal device, and intermediate data used to calculate the position of the first terminal device. The intermediate data may include the distance and angle between the first terminal device and the second device. The positioning solution unit may belong to any device that participates in locating the first terminal device. For example, the positioning solution unit may belong to one or more of the following devices: the first terminal device, the first device, the second device, a positioning server, a base station, a core network device, the second terminal device, etc.

[0129] When the second device includes a positioning solution unit, the positioning solution unit can determine the first phase information based on the phase information of the first signal and the phase information of the second signal, and / or the positioning solution unit can solve the position of the first terminal device based on the first phase information.

[0130] When the second device includes a positioning server, the positioning server can determine the first phase information based on the phase information of the first signal and the phase information of the second signal, and / or the positioning server can solve the position of the first terminal device based on the first phase information.

[0131] In the case where the second device includes a second terminal device as a central node, the second terminal device can determine the first phase information based on the phase information of the first signal and the phase information of the second signal, and / or the second terminal device can solve the position of the first terminal device based on the first phase information.

[0132] In the case where the second device includes a first base station, the first base station can determine the first phase information based on the phase information of the first signal and the phase information of the second signal, and / or the first base station can calculate the position of the first terminal device based on the first phase information.

[0133] The first base station may include a serving base station and / or a neighboring base station (or a neighboring transmission point) of the first terminal device. That is, the first terminal device may communicate with the serving base station and / or the neighboring base station. Exemplarily, when the first terminal device is within the coverage of the serving base station, the second device may include the serving base station. When the first terminal device moves out of the coverage of the serving base station, the second device may include a neighboring base station. For example, when the first terminal device is in a radio resource control (RRC) inactive state or an RRC idle state, the first terminal device may move out of the coverage of the serving base station.

[0134] Optionally, in the case where the second device includes a neighboring base station, the first terminal device may transmit a signal (eg, first phase information) through an uplink grant (UL grant) allocated by the serving base station.

[0135] The uplink grant allocated by the serving base station may be indicated by second information. That is, the serving base station may send the second information to a neighboring base station. The second information may be used to indicate detection-related parameters such as the time-frequency code of the uplink grant. For example, the serving base station may send the second information to all neighboring base stations that may have detected the uplink grant.

[0136] Optionally, when the second device includes a neighboring cell base station, the first terminal device may transmit a signal (eg, first phase information) to the neighboring cell base station via a first resource, wherein the first resource may be a resource shared by the serving base station and the neighboring cell base station.

[0137] The neighboring cell base station and the serving base station may belong to multiple base stations. Resources shared by multiple base stations may form a shared resource pool. The first resource may be obtained from the shared resource pool. Exemplarily, the first resource may be obtained from the shared resource pool in a scheduling-free manner.

[0138] As described above, the first phase information can be used to calculate the position of the first terminal device. In other words, the position of the first terminal device can be calculated based on the received phase difference of multiple signals sent by the first device. The position calculation can be achieved through geometric positioning.

[0139] In the related art, if the first device moves, there may be a certain error in determining the position of the first terminal device through the signal sent by the first device. Taking the first device including a satellite as an example, in order to determine the position of the first terminal device, it is necessary to determine the position of the satellite. The related art can determine the sending time of the satellite based on the time when the positioning signal is received and the approximate distance between the first terminal device and the satellite, thereby determining the position of the satellite. However, due to the fast movement speed of the satellite, there is an error in determining the sending time of the satellite based on the approximate distance between the terminal device and the satellite, which may cause deviations in the satellite position estimation, and thus lead to errors in the positioning of the first terminal device. However, the present application can take into account the reception phase difference when determining the satellite position, determine the corresponding time difference based on the reception phase difference, thereby determining the moving distance of the satellite, and then more accurately positioning the first terminal device in combination with the moving distance of the satellite.

[0140] Optionally, the position of the first terminal device may be determined based on one or more of the following information: first phase information, information of the first device, information of the first terminal device, the first position, the second position, etc.

[0141] The information of the first device may include one or more of the following: an operating trajectory of the first device, ephemeris information of the first device, a time when the first device sends the first signal, a time when the first device sends the second signal, and an identifier of the first device. The operating trajectory may include an actual operating trajectory and / or an equivalent operating trajectory.

[0142] The information of the first terminal device may include one or more of the following: the time when the first terminal device receives the first signal, and the time when the first terminal device receives the second signal. The time when a signal is received may be represented by a timestamp.

[0143] It should be noted that when the second device calculates the position of the first terminal device, if the module used for position calculation is not on the first device (that is, the first device and the second device belong to different devices), the first device and / or the first terminal device is required to send the information of the first device to the second device.

[0144] In some embodiments, the first phase information may be used to resolve the first position and the second position. The first position and the second position may be resolved based on one or more of the following: the first information, information about the first device, the third information, information about the first terminal device, and information related to a clock.

[0145] The third information can be used to indicate the correspondence between the first phase information and the location of the first device (including the first location and the second location). For example, the third information can be used to indicate one or more of the following: the relationship between the first phase information and the first signal, the relationship between the first phase information and the second signal, and the relationship between the first phase information and the first device. The relationship between the first phase information and the first signal can be indicated by the identifier (ID) of the first signal. Similarly, the relationship between the first phase information and the second signal can be indicated by the ID of the second signal. That is, the third information can indicate which two IDs of the signals are used to determine the first phase information. Therefore, the first location can be determined by the identifier of the first signal, and the second location can be determined by the identifier of the second signal. For example, if the first signal and the second signal are both PRSs, PRSs sent at different times can have different PRS IDs. The relationship between the first phase information and the first device can be indicated by the ID of the first device. For example, if the first device is a satellite, the correspondence can be determined by the satellite ID. That is, the third information can indicate which device's ID transmitted the information based on which the first phase information was determined.

[0146] It can be understood that the location of the first terminal device can be calculated through the corresponding relationship indicated by the third information.

[0147] The following uses an example where both the first signal and the second signal are PRSs to illustrate the determination of the first position and the second position. The first terminal device may report a PRS ID corresponding to the first phase information. Based on the PRS ID, the second device may determine the position (including the first position and / or the second position) where the first device transmits the PRS.

[0148] The following example uses a first PRS as the first signal, a second PRS as the second signal, and a satellite as the first device to illustrate the method for determining the first and second positions through steps 1 to 3. Step 1: Determine the reception time of the first PRS based on the configuration ID of the first PRS; determine the reception time of the second PRS based on the configuration ID of the second PRS. Step 2: Determine the approximate transmission times of the first and second PRSs based on the reception times of the first and second PRSs, as well as the approximate distance between the first terminal device and the satellite. Step 3: Determine the first position based on the transmission time of the first PRS combined with ephemeris information; determine the second position based on the transmission time of the second PRS combined with ephemeris information.

[0149] The information related to the clock may also be referred to as detection timestamp related information. The information related to the clock may include: information related to the time difference between the clock of the first terminal device and the reference clock.

[0150] The first terminal device may report one or more of the above-mentioned information to the second device, so that the second device can resolve one or more of the first terminal device's information, the first location, and the second location. For example, the first terminal device sends third information to the second device. The following example illustrates information reported by the first terminal device to the second device, assuming the first device is a satellite and both the first signal and the second signal are PRS.

[0151] For example, the first terminal device can report the detected phase information, the satellite ID corresponding to the phase information, and the first information.

[0152] For another example, the first terminal device may report the detected phase information, the satellite ID corresponding to the phase information, and the PRS detection timestamp, wherein the PRS detection timestamp may be used to determine the location of the satellite when the PRS is transmitted.

[0153] For example, the first terminal device can report the detected phase information, the satellite ID corresponding to the phase information, the PRS detection timestamp, and information related to the detection timestamp.

[0154] For another example, the first terminal device may report the phase difference between the first signal and the second signal.

[0155] In some embodiments, the transmission interval between the first signal and the second signal may be greater than a threshold. The threshold may be related to one or more of the following: a transmission delay between the first terminal device and the first device, and a processing delay of the first terminal device.

[0156] In the case that the first signal and the second signal belong to a plurality of signals that are periodically transmitted, a transmission interval (referred to as a period interval) between any two adjacent signals in the plurality of signals may be greater than a threshold.

[0157] It can be understood that, for multiple signals sent periodically, when the period interval is greater than a threshold, the first position and / or the second position of the first device can be determined according to the non-periodic situation.

[0158] The method embodiments of the present application are described in detail above, and the device embodiments of the present application are described in detail below. It should be understood that the description of the method embodiments corresponds to the description of the device embodiments, so for parts not described in detail, reference can be made to the above method embodiments.

[0159] FIG3 is a schematic structural diagram of a communication device 300 provided in an embodiment of the present application. The communication device 300 is a first device and includes a first sending unit 310 .

[0160] The first sending unit 310 is used to send a first signal and a second signal to a first terminal device; wherein, the relationship between the phase of the first signal and the phase of the second signal on the first device side is a first relationship, the first signal and the second signal are used to determine first phase information, the first phase information includes the receiving phase difference between the first signal and the second signal on the first terminal device side, the position where the first device sends the first signal is the first position, the position where the first device sends the second signal is the second position, and the first position and the second position are different.

[0161] In some embodiments, the communication device 300 is further used to: send auxiliary information to the first terminal device; wherein the auxiliary information is used to indicate the first relationship.

[0162] In some embodiments, the auxiliary information is carried in higher layer signaling.

[0163] In some embodiments, the first relationship includes one or more of the following: a transmission phase difference between the first signal and the second signal at the first device side; and an equivalent time difference corresponding to the transmission phase difference.

[0164] In some embodiments, the transmission phase difference and the equivalent time difference satisfy: transmission phase difference = mod(2πf*equivalent time difference, 2π); where f represents the carrier frequency of the first signal or the second signal, and mod() represents a modulo operation.

[0165] In some embodiments, the first relationship satisfies one or more of the following: configured by the network device, defined by the protocol.

[0166] In some embodiments, the first relationship includes: a phase of the first signal and a phase of the second signal are the same on the first device side.

[0167] In some embodiments, the first relationship includes: a phase of the first signal and a phase of the second signal being continuous in time at the first device side.

[0168] In some embodiments, the phase of the first signal and the phase of the second signal are continuous in time, including: the phase of the first signal and the phase of the second signal satisfying on the first device side: in, Indicates the phase of the first signal on the first device side, represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents a modulo operation.

[0169] In some embodiments, the communication device 300 is also used to: send first information to the first terminal device; wherein the first information is used to perform one or more of the following: configure the first signal and the second signal; indicate whether the first terminal device needs to calculate the received phase difference; indicate whether the multiple signals sent by the first device support phase estimation and difference; indicate whether the first signal and the second signal support phase estimation and difference.

[0170] In some embodiments, the first information is used to configure one or more of the following: the sending time of the first signal; the receiving time of the first signal; the sending time of the second signal; and the receiving time of the second signal.

[0171] In some embodiments, the first signal includes a first positioning reference signal (PRS); and / or the second signal includes a second PRS.

[0172] In some embodiments, the first device comprises an NTN device.

[0173] In some embodiments, the received phase difference satisfies: or, in, Indicates the receiving phase difference, Indicates the phase of the first signal on the first device side, represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents a modulo operation.

[0174] In an optional embodiment, the first sending unit 310 may be a transceiver 530. The communication device 300 may further include a processor 510 and a memory 520, as specifically shown in FIG5 .

[0175] FIG4 is a schematic structural diagram of a terminal device 400 provided in an embodiment of the present application. The terminal device 400 is a first terminal device and includes a first receiving unit 410 .

[0176] The first receiving unit 410 is used to receive the first signal and the second signal sent by the first device; wherein, the relationship between the phase of the first signal and the phase of the second signal on the first device side is a first relationship, the first signal and the second signal are used to determine the first phase information, the first phase information includes the receiving phase difference between the first signal and the second signal on the first terminal device side, the position where the first device sends the first signal is the first position, the position where the first device sends the second signal is the second position, and the first position and the second position are different.

[0177] In some embodiments, the terminal device 400 is further used to: receive auxiliary information sent by the first device; wherein the auxiliary information is used to indicate the first relationship.

[0178] In some embodiments, the auxiliary information is carried in higher layer signaling.

[0179] In some embodiments, the first relationship includes one or more of the following: a transmission phase difference between the first signal and the second signal at the first device side; and an equivalent time difference corresponding to the transmission phase difference.

[0180] In some embodiments, the transmission phase difference and the equivalent time difference satisfy: transmission phase difference = mod(2πf*equivalent time difference, 2π); where f represents the carrier frequency of the first signal or the second signal, and mod() represents a modulo operation.

[0181] In some embodiments, the first relationship satisfies one or more of the following: configured by the network device, defined by the protocol.

[0182] In some embodiments, the first relationship includes: a phase of the first signal and a phase of the second signal are the same on the first device side.

[0183] In some embodiments, the first relationship includes: a phase of the first signal and a phase of the second signal being continuous in time at the first device side.

[0184] In some embodiments, the phase of the first signal and the phase of the second signal are continuous in time, including: the phase of the first signal and the phase of the second signal satisfying on the first device side: in, Indicates the phase of the first signal on the first device side, represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents a modulo operation.

[0185] In some embodiments, the terminal device 400 is also used to: receive first information sent by the first device; wherein the first information is used to perform one or more of the following: configure the first signal and the second signal; indicate whether the first terminal device needs to calculate the receiving phase difference; indicate whether the multiple signals sent by the first device support phase estimation and difference; indicate whether the first signal and the second signal support phase estimation and difference.

[0186] In some embodiments, the first information is used to configure one or more of the following: the sending time of the first signal; the receiving time of the first signal; the sending time of the second signal; and the receiving time of the second signal.

[0187] In some embodiments, the first signal includes a first positioning reference signal (PRS); and / or the second signal includes a second PRS.

[0188] In some embodiments, the first device comprises an NTN device.

[0189] In some embodiments, the received phase difference satisfies: or, in, Indicates the receiving phase difference, Indicates the phase of the first signal on the first device side, represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents a modulo operation.

[0190] In an optional embodiment, the first receiving unit 410 may be a transceiver 530. The terminal device 400 may further include a processor 510 and a memory 520, as specifically shown in FIG5 .

[0191] Figure 5 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 5 indicate that the unit or module is optional. The device 500 can be used to implement the method described in the above method embodiment. The device 500 can be a chip, a terminal device, or a network device.

[0192] The device 500 may include one or more processors 510. The processor 510 may support the device 500 to implement the method described in the method embodiment above. The processor 510 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another 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, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0193] The apparatus 500 may further include one or more memories 520. The memories 520 store programs that can be executed by the processor 510, causing the processor 510 to perform the methods described in the above method embodiments. The memories 520 may be independent of the processor 510 or integrated into the processor 510.

[0194] The apparatus 500 may further include a transceiver 530. The processor 510 may communicate with other devices or chips via the transceiver 530. For example, the processor 510 may transmit and receive data with other devices or chips via the transceiver 530.

[0195] The present application also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to a terminal or network device provided in the present application, and the program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0196] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to a terminal or network device provided in the present application, and the program causes a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0197] The embodiments of the present application also provide a computer program. The computer program can be applied to the terminal or network device provided in the embodiments of the present application, and the computer program enables a computer to execute the method performed by the terminal or network device in each embodiment of the present application.

[0198] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0199] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0200] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0201] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0202] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0203] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0204] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0205] In the embodiments of this application, the term "include" can refer to direct inclusion or indirect inclusion. Alternatively, the term "include" in the embodiments of this application can be replaced with "indicates" or "is used to determine." For example, "A includes B" can be replaced with "A indicates B" or "A is used to determine B."

[0206] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0207] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0208] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0209] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0210] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0211] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that, Comprising: A first device sends a first signal and a second signal to a first terminal device; Wherein, the relationship between the phase of the first signal and the phase of the second signal on the side of the first device is a first relationship, the first signal and the second signal are used to determine first phase information, the first phase information includes the received phase difference between the first signal and the second signal on the side of the first terminal device, the position where the first device sends the first signal is a first position, the position where the first device sends the second signal is a second position, and the first position and the second position are different.

2. The method according to claim 1, characterized in that, The method further comprises: The first device sends auxiliary information to the first terminal device; Wherein, the auxiliary information is used to indicate the first relationship.

3. The method according to claim 2, characterized in that, The auxiliary information is carried in high-layer signaling.

4. The method according to claim 2 or 3, characterized in that, The first relationship includes one or more of the following: The transmission phase difference between the first signal and the second signal on the side of the first device; The equivalent time difference corresponding to the transmission phase difference.

5. The method according to claim 4, wherein The following is satisfied between the transmission phase difference and the equivalent time difference: transmission phase difference = mod(2πf * equivalent time difference, 2π); Wherein, f represents the carrier frequency of the first signal or the second signal, and mod() represents the modulo operation.

6. The method according to claim 1, wherein The first relationship satisfies one or more of the following: configured by a network device, defined by a protocol.

7. The method according to any one of claims 1-6, characterized in that, The first relationship includes: the phase of the first signal and the phase of the second signal are the same on the side of the first device.

8. The method according to any one of claims 1-6, characterized in that, The first relationship includes: the phase of the first signal and the phase of the second signal are continuous in time on the side of the first device.

9. The method according to claim 8, wherein The phases of the first signal and the second signal are continuous over time, including: the phases of the first signal and the second signal satisfy, on the side of the first device: Among them, Indicates the phase of the first signal on the first device side, Represents the phase of the second signal on the side of the first device, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents the modulo operation.

10. The method according to any one of claims 1-9, characterized in that, The method further comprises: The first device sends first information to the first terminal device; Wherein, the first information is used to perform one or more of the following: Configure the first signal and the second signal; Indicate whether the first terminal device needs to calculate the received phase difference; Indicate whether multiple signals sent by the first device support phase estimation and difference calculation; Indicate whether the first signal and the second signal support phase estimation and difference calculation.

11. The method according to claim 10, wherein The first information is used to configure one or more of the following: The transmission moment of the first signal; The reception moment of the first signal; The transmission moment of the second signal; The reception moment of the second signal.

12. The method according to any one of claims 1-11, characterized in that, The first signal includes a first positioning reference signal (PRS); and / or, the second signal includes a second PRS.

13. The method according to any one of claims 1 to 12, characterized in that, The first device includes a non-terrestrial network (NTN) device.

14. The method according to any one of claims 1-13, characterized in that, The received phase difference satisfies: Or, Among them, Indicating the received phase difference, Indicates the phase of the first signal on the first device side, Represents the phase of the second signal on the side of the first device, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents the modulo operation.

15. A wireless communication method, characterized in that, Comprising: A first terminal device receives a first signal and a second signal sent by a first device; Among them, the relationship between the phase of the first signal and the phase of the second signal on the first device side is a first relationship. The first signal and the second signal are used to determine first phase information, and the first phase information includes the received phase difference between the first signal and the second signal on the first terminal device side. The position where the first device sends the first signal is a first position, and the position where the first device sends the second signal is a second position, and the first position and the second position are different.

16. The method according to claim 15, characterized in that, The method further includes: The first terminal device receives auxiliary information sent by the first device; Among them, the auxiliary information is used to indicate the first relationship.

17. The method according to claim 16, wherein The auxiliary information is carried in high-layer signaling.

18. The method according to claim 16 or 17, characterized in that, The first relationship includes one or more of the following: The transmission phase difference between the first signal and the second signal on the first device side; The equivalent time difference corresponding to the transmission phase difference.

19. The method according to claim 18, characterized in that, The following is satisfied between the transmission phase difference and the equivalent time difference: transmission phase difference = mod(2πf * equivalent time difference, 2π); Among them, f represents the carrier frequency of the first signal or the second signal, and mod() represents the modulo operation.

20. The method according to claim 15, characterized in that The first relationship satisfies one or more of the following: configured by the network device, defined by the protocol.

21. The method according to any one of claims 15-20, characterized in that, The first relationship includes: the phases of the first signal and the second signal are the same on the first device side.

22. The method according to any one of claims 15-20, characterized in that, The first relationship includes: the phases of the first signal and the second signal are continuous in time on the first device side.

23. The method according to claim 22, wherein The phases of the first signal and the second signal are continuous over time, including: the phases of the first signal and the second signal satisfy, on the side of the first device: Among them, Indicates the phase of the first signal on the first device side, Represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents the modulo operation.

24. The method according to any one of claims 15-23, characterized in that, The method further includes: The first terminal device receives first information sent by the first device; Among them, the first information is used to perform one or more of the following: Configure the first signal and the second signal; Indicate whether the first terminal device needs to calculate the received phase difference; Indicate whether multiple signals sent by the first device support phase estimation and difference calculation; Indicate whether the first signal and the second signal support phase estimation and difference calculation.

25. The method according to claim 24, wherein The first information is used to configure one or more of the following: The transmission moment of the first signal; The reception moment of the first signal; The transmission moment of the second signal; The reception moment of the second signal.

26. The method according to any one of claims 15-25, characterized in that, The first signal includes a first positioning reference signal (PRS); and / or, the second signal includes a second PRS.

27. The method according to any one of claims 15-26, characterized in that, The first device includes a non-terrestrial network (NTN) device.

28. The method according to any one of claims 15-27, characterized in that, The received phase difference satisfies: or, Among them, Indicates the received phase difference, Indicates the phase of the first signal on the first device side, Represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents the modulo operation.

29. A communication device, characterized in that, The communication device is the first device, and the communication device includes: A first sending unit, configured to send a first signal and a second signal to a first terminal device; Among them, the relationship between the phase of the first signal and the phase of the second signal on the first device side is a first relationship. The first signal and the second signal are used to determine first phase information, and the first phase information includes the reception phase difference between the first signal and the second signal on the first terminal device side. The position where the first device sends the first signal is a first position, and the position where the first device sends the second signal is a second position, and the first position and the second position are different.

30. The communication device according to claim 29, wherein The communication device is further configured to: Send auxiliary information to the first terminal device; Among them, the auxiliary information is used to indicate the first relationship.

31. The communication device according to claim 30, characterized in that, The auxiliary information is carried in the high-layer signaling.

32. The communication device according to claim 30 or 31, characterized in that, The first relationship includes one or more of the following: The transmission phase difference between the first signal and the second signal on the first device side; The equivalent time difference corresponding to the transmission phase difference.

33. The communication device according to claim 32, characterized in that, The following is satisfied between the transmission phase difference and the equivalent time difference: transmission phase difference = mod(2πf * equivalent time difference, 2π); Among them, f represents the carrier frequency of the first signal or the second signal, and mod() represents the modulo operation.

34. The communication device according to claim 29, characterized in that, The first relationship satisfies one or more of the following: configured by the network device, defined by the protocol.

35. The communication device according to any one of claims 29 - 34, characterized in that, The first relationship includes: the phases of the first signal and the second signal are the same on the first device side.

36. The communication device according to any one of claims 29-34, characterized in that, The first relationship includes: the phases of the first signal and the second signal are continuous in time on the first device side.

37. The communication device according to claim 36, characterized in that, The phases of the first signal and the second signal are continuous over time, including: the phases of the first signal and the second signal satisfy, on the first device side: Among them, Indicates the phase of the first signal on the first device side, Represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents the modulo operation.

38. The communication device according to any one of claims 29-37, characterized in that, The communication device is further configured to: Send first information to the first terminal device; Among them, the first information is used to perform one or more of the following: Configure the first signal and the second signal; Indicate whether the first terminal device needs to calculate the reception phase difference; Indicate whether multiple signals sent by the first device support phase estimation and difference calculation; Indicate whether the first signal and the second signal support phase estimation and difference calculation.

39. The communication device according to claim 38, characterized in that, The first information is used to configure one or more of the following: The transmission moment of the first signal; The reception moment of the first signal; The transmission moment of the second signal; The reception moment of the second signal.

40. The communication device according to any one of claims 29 - 39, characterized in that, The first signal includes a first positioning reference signal (PRS); and / or, the second signal includes a second PRS.

41. The communication device according to any one of claims 29-40, characterized in that, The first device includes a non-terrestrial network (NTN) device.

42. The communication device according to any one of claims 29-41, characterized in that, The received phase difference satisfies: or Among them, Indicating the received phase difference, Indicates the phase of the first signal on the first device side, Represents the phase of the second signal on the first device side, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents the modulo operation.

43. A terminal device, characterized in that, The terminal device is a first terminal device, and the terminal device includes: A first receiving unit, configured to receive a first signal and a second signal sent by a first device; Among them, the relationship between the phase of the first signal and the phase of the second signal on the side of the first device is a first relationship. The first signal and the second signal are used to determine first phase information, and the first phase information includes the received phase difference between the first signal and the second signal on the side of the first terminal device. The position where the first device sends the first signal is a first position, and the position where the first device sends the second signal is a second position, and the first position and the second position are different.

44. The terminal device according to claim 43, wherein, The terminal device is further configured to: Receive auxiliary information sent by the first device; Among them, the auxiliary information is used to indicate the first relationship.

45. The terminal device according to claim 44, characterized in that, The auxiliary information is carried on high-layer signaling.

46. The terminal device according to claim 44 or 45, characterized in that, The first relationship includes one or more of the following: The transmission phase difference between the first signal and the second signal on the side of the first device; The equivalent time difference corresponding to the transmission phase difference.

47. The terminal device according to claim 46, wherein The following is satisfied between the transmission phase difference and the equivalent time difference: transmission phase difference = mod(2πf * equivalent time difference, 2π); Among them, f represents the carrier frequency of the first signal or the second signal, and mod() represents the modulo operation.

48. The terminal device according to claim 43, wherein The first relationship satisfies one or more of the following: configured by the network device, defined by the protocol.

49. The terminal device according to any one of claims 43-48, characterized in that, The first relationship includes: the phase of the first signal and the phase of the second signal are the same on the side of the first device.

50. The terminal device according to any one of claims 43-48, characterized in that, The first relationship includes: the phase of the first signal and the phase of the second signal are continuous in time on the side of the first device.

51. The terminal device according to claim 50, characterized in that, The phases of the first signal and the second signal are continuous over time, including: the phases of the first signal and the second signal satisfy, on the side of the first device: Among them, Indicates the phase of the first signal on the first device side, Represents the phase of the second signal on the side of the first device, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents the modulo operation.

52. The terminal device according to any one of claims 43-51, characterized in that, The terminal device is further configured to: Receive first information sent by the first device; Among them, the first information is used to perform one or more of the following: Configure the first signal and the second signal; Indicate whether the first terminal device needs to calculate the received phase difference; Indicate whether multiple signals sent by the first device support phase estimation and difference calculation; Indicate whether the first signal and the second signal support phase estimation and difference calculation.

53. The terminal device according to claim 52, characterized in that, The first information is used to configure one or more of the following: The transmission moment of the first signal; The reception moment of the first signal; The transmission moment of the second signal; The reception moment of the second signal.

54. The terminal device according to any one of claims 43 - 53, characterized in that, The first signal includes a first positioning reference signal (PRS); and / or, the second signal includes a second PRS.

55. The terminal device according to any one of claims 43-54, characterized in that, The first device includes a non-terrestrial network (NTN) device.

56. The terminal device according to any one of claims 43-55, characterized in that, The received phase difference satisfies: Or, Among them, Indicating the received phase difference, Indicates the phase of the first signal on the first device side, Represents the phase of the second signal on the side of the first device, f represents the carrier frequency of the first signal or the second signal, Δt represents the time interval between the first signal and the second signal, and mod() represents the modulo operation.

57. A terminal device, characterized in that, Includes a memory and a processor, the memory is used to store programs, and the processor is used to call the programs in the memory so that the terminal device executes the method according to any one of claims 1-14.

58. A communication device, characterized in that, It includes a memory and a processor. The memory is used for storing a program, and the processor is used for calling the program in the memory to enable the communication device to execute the method according to any one of claims 15 - 28.

59. A device, characterized in that, It includes a processor for calling a program from a memory to enable the device to execute the method according to any one of claims 1 - 28.

60. A chip, characterized in that, It includes a processor for calling a program from a memory, such that the device installed with the chip executes the method according to any one of claims 1 - 28.

61. A computer-readable storage medium, characterized in that, A program is stored thereon, and the program enables a computer to execute the method according to any one of claims 1 - 28.

62. A computer program product, characterized in that, It includes a program that enables a computer to execute the method according to any one of claims 1 - 28.

63. A computer program, characterized in that, The computer program enables a computer to execute the method according to any one of claims 1 - 28.

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