CN118056450A - Wireless communication method, terminal device and communication device - Google Patents

Abstract

Provided are a wireless communication method, a terminal device, and a communication device. The method comprises the following steps: the first device sends a first signal and a second signal to the first terminal device; the phase of the first signal and the phase of the second signal are in a first relation at the first equipment side, the first signal and the second signal are used for determining first phase information, the first phase information comprises a receiving phase difference between the first signal and the second signal at the first terminal equipment side, the position of the first equipment for transmitting the first signal is a first position, the position of the first equipment for transmitting the second signal is a second position, and the first position and the second position are different. The calculation of the reception phase difference may be related to the relationship (i.e., the first relationship) of the first signal and the second signal on the transmission side, thereby making the calculation of the reception phase difference more accurate.

Description

Wireless communication method, terminal device and communication device

Technical Field

The present application relates to the field of communication technologies, and more particularly, to a wireless communication method, a terminal device, and a communication device.

Background

When positioning is performed, the distance between the signal transceivers can be obtained more accurately by measuring the phase information of the received signals. In phase estimation, the phase of a signal may be affected by noise, processing of hardware at a transmitting end and receiving end, and the like, which may cause uncertainty in phase estimation. In the related art, the influence of the transmitting end on the phase measurement is difficult to eliminate, and in order to eliminate the influence of factors such as clock error, hardware delay, initial phase and the like of the transmitting end on the phase measurement, an accurate phase measurement result is obtained, and a signal of the transmitting end needs to be designed.

Disclosure of Invention

The application provides a wireless communication method, a terminal device and a communication device. Various aspects of the application are described below.

In a first aspect, a wireless communication method is provided, the method comprising: the first device sends a first signal and a second signal to the first terminal device; the phase of the first signal and the phase of the second signal are in a first relation at the first equipment side, the first signal and the second signal are used for determining first phase information, the first phase information comprises a receiving phase difference between the first signal and the second signal at the first terminal equipment side, the position of the first equipment for transmitting the first signal is a first position, the position of the first equipment for transmitting the second signal is a second position, and the first position and the second position are different.

In a second aspect, there is provided a wireless communication method comprising: the first terminal equipment receives a first signal and a second signal sent by the first equipment; the phase of the first signal and the phase of the second signal are in a first relation at the first equipment side, the first signal and the second signal are used for determining first phase information, the first phase information comprises a receiving phase difference between the first signal and the second signal at the first terminal equipment side, the position of the first equipment for transmitting the first signal is a first position, the position of the first equipment for transmitting the second signal is a second position, and the first position and the second position are different.

In a third aspect, there is provided a communication device, the communication device being a first device, the communication device comprising: a first transmitting unit, configured to transmit a first signal and a second signal to a first terminal device; the phase of the first signal and the phase of the second signal are in a first relation at the first equipment side, the first signal and the second signal are used for determining first phase information, the first phase information comprises a receiving phase difference between the first signal and the second signal at the first terminal equipment side, the position of the first equipment for transmitting the first signal is a first position, the position of the first equipment for transmitting the second signal is a second position, and the first position and the second position are different.

In a fourth aspect, there is provided a terminal device, the terminal device being a first terminal device, the terminal device comprising: the first receiving unit is used for receiving a first signal and a second signal sent by the first equipment; the phase of the first signal and the phase of the second signal are in a first relation at the first equipment side, the first signal and the second signal are used for determining first phase information, the first phase information comprises a receiving phase difference between the first signal and the second signal at the first terminal equipment side, the position of the first equipment for transmitting the first signal is a first position, the position of the first equipment for transmitting the second signal is a second position, and the first position and the second position are different.

In a fifth aspect, there is provided a communication device comprising a processor and a memory for storing one or more computer programs, the processor being for invoking the computer programs in the memory to cause the communication device to perform some or all of the steps in the method of the first aspect.

In a sixth aspect, there is provided a terminal device comprising a processor and a memory, the memory being for storing one or more computer programs, the processor being for invoking the computer programs in the memory to cause the terminal device to perform some or all of the steps in the method of the second aspect.

In a seventh aspect, an embodiment of the present application provides a communication system, where the system includes the terminal device and/or the communication device described above. In another possible design, the system may further include other devices that interact with the terminal device or the communication device in the solution provided by the embodiment of the present application.

In an eighth aspect, embodiments of the present application provide a computer-readable storage medium storing a computer program that causes a terminal device and/or a communication device to perform some or all of the steps of the methods of the above aspects.

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

In a twelfth aspect, embodiments of the present application provide a chip comprising a memory and a processor, the processor being operable to invoke and run a computer program from the memory to implement some or all of the steps described in the methods of the above aspects.

Some delays at the transmitting end that affect the phase estimate are relatively constant for the same device, e.g., hardware delays. Thus, it can be considered that these delays of the first device remain almost unchanged at the time of transmitting the first signal and at the time of transmitting the second signal. By differencing 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 reception phase difference may be related to the relationship (i.e., the first relationship) of the first signal and the second signal on the transmission side, so that the calculation of the reception phase difference is more accurate.

Drawings

Fig. 1 is a schematic diagram of a wireless communication system to which an embodiment of the present application is applied.

Fig. 2 is a schematic flow chart of a wireless communication method according to an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 4 is a schematic block diagram of a terminal device according to an embodiment of the present application.

Fig. 5 is a schematic block diagram of an apparatus for communication according to an embodiment of the present application.

Detailed Description

The technical scheme of the application will be described below with reference to the accompanying drawings.

Communication system

Fig. 1 is a wireless communication system 100 to which embodiments of the present application are applied. The wireless communication system 100 may include a communication device. The communication devices may include a network device 110 and a terminal device 120. Network device 110 may be a device that communicates with terminal device 120.

Fig. 1 illustrates one network device and two terminals by way of example, and the wireless communication system 100 may alternatively include multiple network devices and may include other numbers of terminal devices within the coverage area of each network device, as embodiments of the application are not limited in this regard.

Optionally, the wireless communication system 100 may further include a network controller, a mobility management entity, and other network entities, which are not limited by the embodiment of the present application.

It should be understood that the technical solution of the embodiment of the present application may be applied to various communication systems, for example: fifth generation (5th generation,5G) systems or New Radio (NR), long term evolution (long term evolution, LTE) systems, LTE frequency division duplex (frequency division duplex, FDD) systems, LTE time division duplex (time division duplex, TDD), and the like. The technical scheme provided by the application can also be applied to future communication systems, such as a sixth generation mobile communication system, a satellite communication system and the like.

The terminal device in the embodiments of the present application may also be referred to as a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a Mobile Station (MS), a Mobile Terminal (MT), a remote station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the application can be a device for providing voice and/or data connectivity for a user, and can be used for connecting people, things and machines, such as a handheld device with a wireless connection function, a vehicle-mounted device and the like. The terminal device in the embodiments of the present application may be a mobile phone (mobile phone), a tablet (Pad), a notebook, a palm, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an augmented reality (augmented reality, AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in unmanned (SELF DRIVING), a wireless terminal in teleoperation (remote medical surgery), a wireless terminal in smart grid (SMART GRID), a wireless terminal in transportation security (transportation safety), a wireless terminal in smart city (SMART CITY), a wireless terminal in smart home (smart home), and the like. Alternatively, the UE may be used to act as a base station. For example, the UE may act as a scheduling entity that provides sidelink signals between UEs in a vehicle-to-everything, V2X, or device-to-device (D2D), etc. For example, a cellular telephone and a car communicate with each other using side-link signals. Communication between the cellular telephone and the smart home device is accomplished without relaying communication signals through the base station.

The network device in the embodiment 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 particular geographic area and may communicate with terminal devices 120 located within the coverage area. The access network device may also be referred to as a radio access network device or base station, etc. The access network device in the embodiment of the present application may refer to a radio access network (radio access network, RAN) node (or device) that accesses the terminal device to the wireless network. The access network device may broadly cover or replace various names such as: a node B (NodeB), an evolved NodeB (eNB), a next generation NodeB (gNB), a relay station, an access point, a transmission point (TRANSMITTING AND RECEIVING point, TRP), a transmission point (TRANSMITTING POINT, TP), a master eNB (MeNB), a secondary eNB (SeNB), a multi-standard radio (MSR) node, a home base station, a network controller, an access node, a radio node, an Access Point (AP), a transmission node, a transceiver node, a baseband unit (BBU), a remote radio unit (remote radio unit, RRU), an active antenna unit (ACTIVE ANTENNA unit, AAU), a radio head (remote radio head, RRH), a Central Unit (CU), a Distributed Unit (DU), a positioning node, and the like. The base station may 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 for placement within the aforementioned device or apparatus. The base station may also be a mobile switching center, D2D, V2X, a device that performs a base station function in machine-to-machine (M2M) communication, a network side device in a 6G network, a device that performs a base station function in a future communication system, or the like. The base stations may support networks of the same or different access technologies. The specific technology and specific device configuration adopted by the access network device in the embodiment of the application are not limited.

The base station may be fixed or mobile. For example, a helicopter or drone may be configured to act as a mobile base station, and one or more cells may move according to the location of the mobile base station. In other examples, a helicopter or drone may be configured to function as a device to communicate with another base station.

The communication devices involved in the wireless communication system may include not only access network devices and terminal devices, but also core network elements. The core network element may be implemented by a device, i.e. the core network element is a core network device. It will be appreciated that the core network device may also be a network device.

The core network element in the embodiment of the application can comprise a network element for processing and forwarding signaling and data of a user. For example, the core network devices may include core network access and mobility management functions (core ACCESS AND mobility management function, AMF), session management functions (session management function, SMF), and user plane gateways, location management functions (location management function, LMF), and the like. The user plane gateway may be a server with functions of mobility management, routing, forwarding, etc. for user plane data, and is generally located at a network side, such as a serving gateway (SERVING GATEWAY, SGW) or a packet data network gateway (PACKET DATA network gateway, PGW) or a user plane network element functional entity (user plane function, UPF), etc. Of course, other network elements may be included in the core network, which are not listed here.

In some deployments, the network device in embodiments of the 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.

Network devices and terminal devices may be deployed on land, including indoors or outdoors, hand-held or vehicle-mounted; the device can be deployed on the water surface; but also on aerial planes, balloons and satellites. In the embodiment of the application, the scene where the network equipment and the terminal equipment are located is not limited.

It should be understood that all or part of the functionality of the communication device in the present application may also be implemented by software functions running on hardware or by virtualized functions instantiated on a platform, such as a cloud platform.

Non-ground network (non-TERRESTRIAL NETWORKS, NTN)

NTN may provide communication services to subscribers in a non-terrestrial manner. That is, communication with the terminal devices may be through NTN devices (e.g., non-terrestrial network devices) Such As Satellites (SATs), unmanned aerial vehicle system platforms (UAS platforms), etc.

For ground network communication, land communication cannot build communication equipment in the scenes of ocean, mountain, desert and the like. Or in view of the cost of communication equipment setup and operation, land communications typically do not cover sparsely populated areas. NTN has many advantages over terrestrial network communications. First, the NTN communication network is not limited by the territory. In theory, satellites can orbit the earth, so every corner of the earth can be covered by satellite communications. And, the area that non-terrestrial network devices can cover is much larger than the area that terrestrial communication devices cover. I.e. NTN cells may cover a larger range.

Non-terrestrial network devices may move relative to the earth and, therefore, in NTN, cells may move on the earth's surface. This phenomenon may cause a network device to have difficulty in reliably determining a location where the terminal device is located, and even a country where the terminal device belongs, which may cause the NTN to have difficulty in supporting the supervision service. Based on this, it is unreliable to rely on only global navigation satellite system (global navigation SATELLITE SYSTEM, GNSS) reports from the terminal device, a solution combining GNSS reports with a network-based solution can improve reliability. Thus, the network operator should cross check the location of the terminal equipment beyond the GNSS locations reported by the terminal based on satellite navigation positioning, thus meeting potential regulatory requirements.

Positioning technology

As communication technologies mature, some communication systems (e.g., 5G systems) may implement more and more communication algorithms. These communication algorithms may include high rate transmission of information, location techniques, and the like. For example, for the NTN system described above, not only the positioning of the terminal device may be achieved by GNSS, but also the positioning of the terminal device may be achieved by a communication algorithm using a non-terrestrial communication device such as a satellite, so as to meet the requirements of the NTN system.

Some wireless communication systems may include a server. The resolution of the position coordinates of the terminal device may be performed in a server. Such a server may also be referred to as a positioning server.

The location server may be an operator provided network device with location functionality. The network device with the positioning function can be a core network device or a cloud server. For example, the location server according to embodiments of the present application may include one or more of a location management function (location management function, LMF), a location management component (location management component, LMC), and a local location management function (local location management function, LLMF) located in a network device, which embodiments of the present application are not limited in this respect.

The positioning system may determine the position of an object to be positioned (hereinafter referred to as a target) by means of geometrical positioning. Geometric positioning may determine the position of a target by the distance between the target and a reference point. The distance may 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 may calculate the position of the object using triangulation (or referred to as triangulation) or polygon (or referred to as multilateration). Trigonometry typically requires the acquisition of an angle between the target and at least two reference points.

The geometrical principle of geometrical positioning may relate to the basic concepts of triangulation and multilateration. Triangulation is a method of determining position by measuring the edges and corners of triangles. In positioning, it is common to make measurements using triangle angle and side length information. Polygonal measurements are methods that use internal and external angular measurements of a polygon to determine position. The method of multilateral measurement generally requires at least three reference points of known position, the position of the target being calculated by measuring the angle between the target and these reference points. For example, trilateration is a method of calculating the position of a target by measuring the side lengths between the target and three reference points of known positions. Such methods are common to wireless positioning and indoor positioning systems.

According to the geometric principle of positioning, a user can position the user by measuring signals of different transmitters. The location of the different transmitters is the location of the reference point. Or a user may locate the user via multiple signals transmitted by the same transmitter. The transmitter may transmit signals at a plurality of different locations, which may be the locations of the reference points. Illustratively, based on a signal transmitted by the transmitter at a location, a distance between the user and the location may be determined; based on the signal transmitted by the transmitter at another location, a distance between the user and the other location may be determined. Based on the distance between the user and the plurality of locations, the location of the user may be determined.

Antenna array (ANTENNAARRAY)

An antenna array performs transmission or reception of signals by cooperating with a plurality of antennas. By adjusting the antennas in the antenna array, the antenna array may form a specific geometry in space, such as a linear array, a uniform matrix, a circular array, etc. The antenna array may improve performance of the communication system through processing of multipath propagation and anti-interference algorithms. In addition, the antenna array allows multiple independent signals to be transmitted simultaneously on the same frequency, thereby improving spectral efficiency. Taking beamforming (beamforming) technology as an example, based on the beamforming technology, an antenna array may form a beam in a specific direction by adjusting the phase and amplitude of each antenna, thereby increasing the sensitivity of the system to the specific direction and reducing interference to other directions. In radar and sensor applications, antenna arrays may enable high resolution target detection and tracking through beamforming.

The design of the antenna array can be tailored to the requirements of a particular application, providing greater flexibility. In a communication system, an antenna array may be used in a multiple-input multiple-output (multiple input multiple output, MIMO) system (which may also be referred to as a multi-antenna system) to improve data transmission rates and system reliability. In a radar system, the antenna array can be used for realizing a phased array radar, and has the advantages of rapid scanning, target tracking, interference resistance and the like. In wireless sensor networks, antenna arrays may be used for positioning, directional propagation, and energy focusing applications.

In general, antenna arrays are a powerful technology that is widely used in wireless communications, radar, sensing and other wireless applications.

Phase estimation

When positioning is performed, the distance between the signal transceivers can be obtained more accurately by measuring the phase information of the received signals. The phase information may be obtained by phase estimation. The phase of the signal may be affected by noise for various reasons, which may lead to uncertainty in the phase estimate.

For NTN systems, the influencing factors for the phase estimation of the signal transmitted by the NTN device may come from one or more of the following: propagation environment, receiving system, NTN device itself, etc. The following description will take NTN devices as an example of satellites.

The propagation environment of satellite signals includes the atmosphere at the earth's surface. The ionosphere and troposphere in the atmosphere cause changes in the refraction and propagation velocity of electromagnetic waves, thereby affecting the phase of the signal. These atmospheric effects are often referred to as atmospheric delays, which are an important source of error in phase estimation for some navigation systems, such as global positioning systems (global positioning system, GPS), beidou systems, etc.

Multipath effects may refer to: the signal propagates through different paths to a signal receiving device (otherwise known as a receiving station, receiver, or receiving end) resulting in multiple versions of the signal arriving simultaneously, thereby creating phase distortions. Multipath effects can have an impact on the phase estimate.

Clock errors inside the receiver can also affect the phase estimation. Even if the clocks at the receiving end are very accurate, clock differences may still exist for various reasons (e.g., temperature changes, clock drift, etc.).

Delays introduced by hardware (antennas, amplifiers, mixers, transmission lines, etc.) in satellite systems can affect the phase estimation of the signal.

The motion of the satellites can cause doppler effects that can introduce variations in the frequency of the signal, thereby affecting the accuracy of the phase estimate.

The accuracy of the calibration of the signal receiving apparatus directly affects the accuracy of the phase estimation. The quality of calibration of the various components in the signal receiving apparatus can affect the phase of the signal.

The effects of the above factors may all lead to phase estimation errors. Therefore, in applications such as satellite communications and navigation, a series of technical measures are generally adopted to reduce these errors, such as differential techniques, beamforming, etc.

Differential technology is a method for reducing or eliminating common errors such as atmospheric delays, and is widely used in satellite navigation systems and other applications requiring high accuracy phase measurements.

Phase differential techniques may include single-point phase differential and double-point phase differential.

The single-point phase difference may eliminate some errors between two receiving stations (reference receiver and primary receiver) by using a reference receiver within the receiving station. The reference receiver is generally considered to be immune to errors such as atmospheric delays, so its observations can be used to calibrate the observations of the primary receiver. By differentiating the observations of the primary receiver from those of the reference receiver, some common errors, such as atmospheric delays and receiver clock errors, can be eliminated. Single-point phase differencing is generally suitable for applications over relatively short ranges of distances.

The two-point difference takes into account the difference between the two receiving stations so that the difference in space can also be used to calibrate errors such as atmospheric delays. The two-point differential is typically applied to two relatively far receiving stations. Because the two-point differential accounts for spatial variations, rather than just a single point of calibration, greater accuracy may be provided.

By the differential technique, errors such as atmospheric delay and the like can be eliminated to a certain extent, thereby improving the accuracy of phase measurement. This has important applications in the fields of achieving high-precision satellite navigation, earth observation, scientific research, and the like.

The differential technology can show that the receiving end can perform phase estimation on signals from different satellites and subtract the estimated phases, so that clock error of the receiving end, phase error caused by hardware of the receiving end, atmospheric error and the like are eliminated. However, most of the cancellation is directed to errors at the receiving end, and the influence of clock error of the satellite, initial phase of the satellite and hardware delay of the satellite on phase measurement cannot be cancelled.

Therefore, it is difficult to eliminate the influence of the transmitting end on the phase measurement. For example, it is difficult to eliminate the influence of factors such as clock skew, hardware delay, initial phase, etc. at the transmitting end on the phase measurement, so that it is difficult to obtain an accurate phase measurement result.

Fig. 2 is a schematic flowchart of a wireless communication method according to an embodiment of the present application to solve the above-mentioned problem.

The method shown in fig. 2 may be performed by a first terminal device as well as the first device. The first device may be a mobile device. For example, the first device may comprise an NTN device. Illustratively, the first device may comprise a satellite. The mobile device may be a device that moves with respect to the ground or the earth.

The method shown in fig. 2 may include step S210.

In step S210, the first device sends a first signal and a second signal to the first terminal device.

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 and second positions may be different. That is, the first signal and the second signal may be signals transmitted at different positions by the same transmitting terminal. The signals transmitted at different positions enable the receiving end to detect the received signals to obtain more space information, namely the signals transmitted at different positions carry more space information.

It should be noted that, the first position and the second position being different may refer to: the two locations differ with respect to the ground or earth. That is, the first device may be a device that moves relative to the ground.

In some embodiments, the time of transmission of the first signal is a first time and the time of transmission of the second signal is a second time. The first time and the second time are different. That is, the transmission timings of the first signal and the second signal are different. Since the first device may be mobile, in the case where the transmission timings of the first signal and the second signal are different, the positions where the first device transmits the first signal and the second signal may also be different.

It should be noted that, the present application does not limit the sending sequence of the first signal and the second signal. For example, the first signal may be transmitted earlier or later than the second signal. That is, the first time may be earlier than the second time or later than the second time.

The first signal and/or the second signal may be signals capable of phase estimation. For example, the first signal and/or the second signal may comprise signals for positioning. The signal for positioning may be, for example, a Positioning Reference Signal (PRS) REFERENCE SIGNAL. For example, the first signal may include a first PRS. As another example, the second signal may include a second PRS. The signal for positioning may be, for example, a Sounding REFERENCE SIGNAL (SRS). For example, the first signal may include a first SRS. As another example, the second signal may include a second SRS.

In some embodiments, the first device may transmit a plurality of signals, which may include the first signal and the second signal. For example, the first signal and the second signal may be two adjacent signals of the plurality of signals. Or at least one signal may be spaced between the first signal and the second signal. The plurality of signals may be transmitted periodically, i.e., the transmission intervals of adjacent two signals of the plurality of signals may be equal. The plurality of signals may also be transmitted aperiodically.

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

The first terminal device may detect the first signal and the second signal to perform phase estimation on the first signal and the second signal. For example, the first terminal device may determine the phase information based on the time of arrival of the first signal and/or the second signal at the first terminal device. By detecting the first signal, the first terminal device may obtain the phase information of the first signal, for example. By detecting the second signal, the first terminal device may obtain phase information of the second signal. The phase information may include a detected phase. By subtracting the phase of the first signal and the phase of the second signal, a reception phase difference can be obtained.

It should be noted that, 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, the phase of the second signal is subtracted from the phase of the first signal.

As is clear from this, the reception phase difference is a phase difference obtained based on the phase of the first signal and the phase of the second signal detected by the first terminal device. Correspondingly, at the transmitting end, the difference between the transmission phase of the first signal and the transmission phase of the second signal may be referred to as a transmission phase difference.

It should be noted that the phase of the first signal or the second signal may be used as a reference phase to calculate the received phase difference. That is, for any one of the plurality of signals received by the first terminal device, the received phase difference between the corresponding signal and the reference phase may be calculated by the reference phase. The reference phase or the signal corresponding to the reference phase may be determined by the first terminal device or may be indicated by the network device.

It can be understood that the first phase information proposed by the present application may include a received phase difference between a plurality of signals transmitted at different positions by the same transmitting end. Because the transmitting end is the same equipment, the receiving phase difference obtained based on the application is not influenced by the delay of the transmitting end, thereby realizing accurate measurement. The method for eliminating the hardware delay error of the transmitting end is described by taking the first equipment including satellites as an example.

For different satellites, there are differences in hardware for different satellites, and therefore, there are differences in hardware delay errors between different satellites. If the hardware delay errors are not accurately compensated or corrected, the calculated phase differences introduce corresponding errors, thereby affecting the accuracy of the measurement results. In the related art, in order to minimize the influence of the hardware delay error, a precise clock synchronization or the like may be adopted. However, the clocks of different satellites are difficult to completely agree, and thus, there may still be some residual hardware delay errors.

For the same satellite, the hardware delay is typically relatively constant because it is mainly caused by the time of signal propagation and processing, which factors are unlikely to vary significantly in a short time. The following description will take, as an example, a hardware delay such as a transmission delay, a signal processing delay, a memory delay, and the like. The transmission delay may refer to the time required for a signal to be transmitted from the ground station to the satellite and back to the ground station. This is mainly dependent on the speed of signal propagation, i.e. the speed of propagation of electromagnetic waves in space. Since the speed of light is a constant and does not change over time, the transmission delay is relatively stable. The signal processing delay may refer to the time required for signal processing on the satellite. Signal processing may include decoding, processing sensor data, executing instructions, and the like. It will be appreciated that the signal processing delay is typically relatively constant and will only change when the hardware or software on the satellite is upgraded or changed. Storage delay may refer to the time required for a signal to wait in storage for processing if there is a storage device on the satellite. Storage latency is also typically relatively stable unless the storage medium or storage system changes.

Some delays at the transmitting end that affect the phase estimate are relatively constant for the same device, e.g., hardware delays. Thus, it can be considered that these delays of the first device remain almost unchanged at the time of transmitting the first signal and at the time of transmitting the second signal. When the received phase difference between the first signal and the second signal is calculated, the part affected by the delays at the transmitting end can be eliminated by the difference, so that the received phase difference is not affected by the delays such as the hardware delay at the transmitting end.

In particular, in a complex environment, errors caused by hardware delays are more noticeable. Therefore, the application not only can accurately model and correct the hardware delay error to realize high-precision measurement, but also can obtain more accurate measurement results in a complex environment. That is, the present application can also be applied in high-precision measurement applications.

In addition, the first device can construct an equivalent antenna array through movement according to the application, namely, the first signal and the second signal can be signals sent by different antennas in the equivalent antenna array. It can also be said that, for the same antenna, by transmitting signals at different positions, the same antenna can be coordinated at different positions to form an equivalent antenna array. By constructing an equivalent antenna array, a technical scheme (e.g., beamforming) implemented based on the antenna array may be used, thereby improving performance of the communication system.

In order to construct the effect of the array antenna, signals transmitted by the transmitting end at different positions need to have correlation. Explained below from the receiving end, the receiving end receives a signal as follows: y (t) =h (t) ×s (t) +n (t); where y (t) may represent a received signal, h (t) may represent a channel impulse response, s (t) represents a transmitted signal, and n (t) represents noise. Wherein the channel propagation delay may be reflected in the channel impulse response. The receiving end can perform phase estimation on the received signal y (t). From the above formula, it can be seen that the phase estimate for y (t) contains both the effect of the propagation delay of the channel on the phase and the effect of the phase of the transmitted signal s (t). When the received phase difference is calculated for the received signals of the transmitted first signal s (t ₁) and the transmitted second signal s (t ₂), if the transmitted signals of the first signal and the second signal are identical, the transmitted signals can be eliminated when the received phases of the first signal and the second signal are differed. However, if the transmission signals of the first signal and the second signal are different, the reception phases of the first signal and the second signal are differentiated, and the difference includes the phase difference information of the transmission signals s (t ₁) and s (t ₂), in which case the reception phase difference does not accurately reflect the propagation delay. Therefore, when the transmitting end transmits the first signal and the second signal, it is necessary to coordinate the signal phases when the first signal and the second signal are transmitted.

The relationship between the phase of the first signal and the phase of the second signal on the first device side may be a first relationship. In other words, the relationship between the phase of the first signal when the first signal is transmitted and the phase of the second signal when the second signal is transmitted may be the first relationship. It can be said that the relationship between the phase of the first signal at the transmitting antenna and the phase of the second signal at the transmitting antenna may be a first relationship. Alternatively, 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 may be the first relationship. Or the relationship between the transmission phase of the first signal and the transmission phase of the second signal may be the first relationship.

The received phase difference may be related to a first relationship. By the first relationship, the reception phase difference can be determined more accurately. The first relationship is explained below.

In some embodiments, the first device may send the assistance information to the first terminal device. The auxiliary information may be used to indicate the first relationship. For example, the first device may obtain a first relationship of the present side. Based on the acquired first relationship, the first device may indicate the first relationship to the first terminal device through the auxiliary information.

Alternatively, 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.

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

The difference between the transmission phase of the first signal and the transmission phase of the second signal may be a transmission phase difference. When the first device transmits the first signal and the second signal, the transmission phase of the first signal and the transmission phase of the second signal may be acquired, and the transmission phase difference may be determined. In some embodiments, the first device may indicate the transmission phase difference directly to the first terminal device through the assistance information.

In some embodiments, the transmit phase difference may correspond to an equivalent time difference. The first device may indicate the equivalent time difference to the first terminal device via the assistance information. The first terminal device may determine the transmission phase difference according to the equivalent time difference.

Alternatively, the transmission phase difference and the equivalent time difference may satisfy: transmit phase difference=mod (2pi f equivalent time difference, 2pi). Where f may represent the carrier frequency of the first signal or the second signal. mod () may represent a modulo operation.

It will be appreciated that the first device may indicate the first relationship by the assistance information. For example, on the first device side that transmits the first signal and the second signal, the phase of the first signal and the phase of the second signal may not be defined. The first device may measure a transmit phase of the first signal and a transmit phase of the second signal and determine the first relationship. The first device may inform the first terminal device of the determined first relationship through the 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 signal sent by the first device can be more flexible through the indication of the auxiliary information, so that the processing procedure of the first device on the signal is reduced.

It should be noted that, for a plurality of signals, corresponding auxiliary information may be sent for any two signals, so that a phase relationship of the plurality of signals at the transmitting end may be dynamically indicated.

In some embodiments, the first relationship may 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 neighbor base station, a positioning server, etc. In case the network device configures the first relation for the first terminal device, the first terminal device may determine the reception phase difference according to the first relation. In the case where 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, i.e. the first device and the first terminal device may agree on the first relationship to achieve an accurate communication or positioning.

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

In some embodiments, the first relationship may include: the phase of the first signal and the phase of the second signal are identical on the first device side.

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 obtain the received phase difference directly according to the detected phase. I.e. the first terminal device may not adjust the received phase difference. Therefore, the technical scheme can simplify the processing of the first terminal equipment side.

The signal received by the first terminal device (including the first signal or the second signal) may satisfy: y (t) =h (t) ×s (t) +n (t). Where 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. Wherein the channel propagation delay may be reflected in the channel impulse response.

Therefore, in the case that the first terminal device performs phase estimation on the received signal y (t), the phase information obtained by the phase estimation may include propagation delay and phase difference of the signal. When the phase difference is calculated for 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 reception phases of the first signal and the second signal are differed, thereby eliminating the constant delay at the transmitting end. However, if the transmission phase of the first signal and the transmission phase of the second signal are different, the phases of the first signal and the second signal are differed, and the difference will include the phase information of the transmission signal, and the difference cannot accurately reflect the content of the propagation delay.

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

Alternatively, the phase of the first signal and the phase of the second signal may be continuous in time at the first device side: wherein/> Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal. The time interval may refer to a time difference between a time instant when the first signal is transmitted and a time instant when the second signal is transmitted.

In some embodiments, when the phase of the first signal and the phase of the second signal are different at the first device side, the receive phase difference may be adjusted to accurately reflect the propagation delay. For example, the reception phase difference may satisfy: Or,/> Wherein/>Representing the receive phase difference,/>Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing 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 may satisfy: /(I) Or, when the phase difference is obtained by subtracting the phase of the first signal from the phase of the second signal,/>

In some embodiments, the position of the first terminal device may be resolved from the first phase information.

In some embodiments, the first terminal device may send the capability information to the first device. The capability information may be used to indicate whether the first terminal device supports calculating a received phase difference between the first signal and the second signal. That is, the first terminal device may report whether it supports phase estimation differencing of different signals of the same device.

Alternatively, in the case where the moving speed of the first terminal device is less than or equal to the first speed threshold, the first terminal device may support calculation of a reception phase difference between the first signal and the second signal; and/or, in case the moving speed of the first terminal device is greater than the first speed threshold, the first terminal device may not support calculation of the reception phase difference between the first signal and the second signal. Wherein the first speed threshold is a positive number. That is, in the case where the first terminal apparatus is not moving at a high speed, the first terminal apparatus can support calculation of the reception phase difference of the first signal and the second signal.

When the first terminal device moves at a high speed, the position of the user is greatly changed when the first terminal device detects the first signal and the second signal. In the case of a large change in position, the scattering environment around the first terminal device is greatly changed. Therefore, the phase correlation between the phase when the first signal is received and the phase when the second signal is received is low, and even if the reception phase difference is obtained, the reception phase difference cannot reflect the difference in distance from the first terminal device to the first device, so that the reception phase difference cannot be used as a distance estimate, and cannot be used for the position estimate of the first terminal device.

In some embodiments, the first terminal device may receive the first information. The first information may be transmitted by the first device. The first information will be described below.

In some implementations, the first information may configure the first signal and/or the second signal. In this case, the first information may configure, for example, one or more of the following information: the transmission time of the first signal, the reception time of the first signal, the transmission time of the second signal, the reception time of the second signal, the identification of the first signal, and the identification of the second signal.

In case the first signal and the second signal are of the same type, for example, in case both the first signal and the second signal are PRS signals, the first information may be used to configure a transmission time and/or a reception time of the type of signal. The first information may be used to configure a transmit time and/or a receive time of the plurality of PRS signals, for example.

In some embodiments, the time of receipt may also be referred to as a detection timestamp (TIME STAMP). I.e. the moment of reception of the first signal may be referred to as the detection timestamp of the first signal; the moment of reception of the second signal may be referred to as a detection timestamp of the second signal.

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

The first terminal device may receive and detect the first signal and/or the second signal according to the first information. That is, based on the first information, the first terminal device may perform step S210.

The transmission time or the reception time in the present application may be represented by one or more of the following: absolute time, first time unit. The absolute time may be, for example, world time. For example, the first information may indicate that the transmission time of the first signal is 2023, 12, 19, 14, 01 minutes, 23 seconds, and 01 microseconds. The absolute time may be in the form of a time stamp (TIME STAMP) in the first information the first time unit may include one or more of: frame, subframe, orthogonal frequency division multiplexing (orthogonal frequency division multiplexing, OFDM) symbols. For example, the first information may indicate one or more of a frame number, a subframe number, and an OFDM symbol index of a transmission timing of the second signal.

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.

In some implementations, the first information may indicate whether the plurality of signals transmitted by the first device support phase estimation differencing. For example, the plurality of signals may each be a signal for positioning, and the first information may indicate whether the signal for positioning transmitted by the first device supports phase estimation differencing.

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

In some embodiments, the first terminal device may determine the first phase information itself. 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 other devices (e.g., the second device described below) so that the other devices determine the first phase information.

The received phase difference of the first signal and the second signal may be used to enable positioning of the first terminal device. Under the condition that the first terminal equipment determines the first phase information by itself, the first terminal equipment can determine the position of the first terminal equipment by itself according to the first phase information. In the case where the first terminal device transmits the first phase information to other devices, the other devices (for example, a second device described below) may calculate the position of the first terminal device.

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

In 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.

In some embodiments, the second device may comprise a destination, i.e. the final receiver of the signal. In some embodiments, the second device may comprise a forwarding device (or a relaying device). For example, the second device may forward the received first phase information to other devices.

The second device may include one or more of the following: the system comprises a positioning resolving unit, a positioning server, a second terminal device serving as a central node and a first base station.

The location resolution unit may participate in the location resolution of the first terminal device. The output of the positioning solution unit may comprise one or more of the following: and the position of the first terminal equipment is used for calculating the intermediate data of the position of the first terminal equipment. Wherein the intermediate data may comprise a distance, an angle, etc. between the first terminal device and the first device. The location resolution unit may belong to any device that participates in the location of the first terminal device. For example, the positioning solution unit may belong to one or more of the following devices: a first terminal device, a first device, a second device, a positioning server, a base station, a core network device, a second terminal device, etc.

In case the second device comprises a positioning resolving unit, the positioning resolving unit may determine the first phase information from the phase information of the first signal and the phase information of the second signal, and/or the positioning resolving unit may resolve the position of the first terminal device based on the first phase information.

In case the second device comprises a positioning server, the positioning server may determine the first phase information from the phase information of the first signal and the phase information of the second signal and/or the positioning server may calculate the position of the first terminal device based on the first phase information.

In case the second device comprises a second terminal device as a central node, the second terminal device may determine the first phase information from the phase information of the first signal and the phase information of the second signal and/or the second terminal device may calculate the position of the first terminal device based on the first phase information.

In case the second device comprises a first base station, the first base station may determine the first phase information from the phase information of the first signal and the phase information of the second signal, and/or the first base station may calculate the position of the first terminal device based on the first phase information.

The first base station may comprise a serving base station and/or a neighbor 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 neighbor base station. For example, in case the first terminal device is located within the coverage area of the serving base station, the second device may comprise the serving base station. The second device may comprise a neighbor base station in case the first terminal device moves out of the coverage area of the serving base station. For example, the first terminal device may move out of coverage of the serving base station in case the first terminal device is in a radio resource control (radio resource control, RRC) inactive state or an RRC idle state.

Alternatively, in case the second device includes a neighbor base station, the first terminal device may transmit a signal (e.g., first phase information) through an uplink grant (UL grant) allocated by the serving base station.

The uplink grant allocated by the serving base station may be indicated by the second information. I.e. the serving base station may send the second information to the neighbor base station. The second information may be used to indicate a time-frequency code of the uplink grant, etc. to detect the relevant parameters. The serving base station may send the second information to all neighbor base stations that may detect the uplink grant.

Alternatively, in case the second device comprises a neighboring base station, the first terminal device may transmit a signal (e.g. the first phase information) to the neighboring base station via the first resource. The first resource may be a resource shared by the serving base station and the neighbor base station.

The neighbor base station and the serving base station may belong to a plurality of base stations. The resources shared by multiple base stations may constitute a shared resource pool. The first resource may be obtained from a shared resource pool. Illustratively, the first resource may be obtained in the shared resource pool in a scheduling-free manner.

As described above, the first phase information may be used to resolve the location of the first terminal device. That is, the position of the first terminal device can be resolved by the reception phase differences of the plurality of signals transmitted by the first device. Wherein the position calculation may be achieved by geometric positioning.

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 transmitted by the first device. Taking the example that the first device comprises satellites, in order to determine the position of the first terminal device, the position of the satellites needs to be determined. The related art may determine a transmission timing of the satellite based on a time when the positioning signal is received and an approximate distance of the first terminal device from the satellite, thereby determining a position of the satellite. However, since the moving speed of the satellite is high, the error exists in the transmitting time of the satellite according to the approximate distance between the terminal equipment and the satellite, so that the satellite position estimation may deviate, and the positioning of the first terminal equipment is caused to have error. The method and the device can consider the receiving phase difference when determining the satellite position, and determine the corresponding time difference according to the receiving phase difference, so as to determine the moving distance of the satellite, and further combine the moving distance of the satellite to more accurately position the first terminal equipment.

Alternatively, the location 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, first location, second location, etc.

The information of the first device may include one or more of the following: the method comprises the steps of running track of a first device, ephemeris information of the first device, time when the first device transmits a first signal, time when the first device transmits a second signal and identification of the first device. The running track may include an actual running track and/or an equivalent running track.

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, the time when the first terminal device receives the second signal. Wherein the moment of receiving a certain signal can be represented by a time stamp.

When the second device calculates the position of the first terminal device, if the module for calculating the position is not located on the first device (i.e., the first device and the second device belong to different devices), the first device and/or the first terminal device needs to send the information of the first device to the second device.

In some embodiments, the first phase information may be used for a solution to the first location and the second location. The first location and the second location may be resolved based on one or more of: the first information, the information of the first device, the third information, the information of the first terminal device, the information related to the clock.

The third information may be used to indicate a correspondence between the first phase information and a location of the first device (including the first location and the second location). For example, the third information may be used to indicate one or more of the following: a relationship between the first phase information and the first signal, a relationship between the first phase information and the second signal, a relationship between the first phase information and the first device. The relationship between the first phase information and the first signal may be indicated by an Identification (ID) of the first signal. Similarly, the relationship between the first phase information and the second signal may be indicated by the ID of the second signal. I.e. the third information may indicate on which two ID signals the first phase information is determined. Thus, the first location may be determined by the identification of the first signal and the second location may be determined by the identification of the second signal. Taking PRS as an example, both the first signal and the second signal may have PRS IDs that are different from PRS to PRS. The relationship between the first phase information and the first device may be indicated by an ID of the first device. For example, in the case where the first device is a satellite, the correspondence may be determined by the ID of the satellite. I.e. the third information may indicate on which ID the device transmitted the first phase information was determined.

It can be appreciated that, by the correspondence indicated by the third information, the resolution of the position of the first terminal device can be achieved.

The determination of the first and second positions is illustrated below using PRS as an example of both the first and second signals. 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 a location (including the first location and/or the second location) at which the first device transmitted the PRS.

The method of determining the first position and the second position is exemplified by steps 1 to 3 below using the first signal as the first PRS and the second signal as the second PRS and the first device as the satellite. Step 1, determining the receiving time of a first PRS according to the configuration ID of the first PRS; and determining the receiving time of the second PRS according to the configuration ID of the second PRS. And 2, determining approximate sending moments of the first PRS and the second PRS according to the receiving moment of the first PRS, the receiving moment of the second PRS and the approximate distance between the first terminal equipment and the satellite. Step 3, determining a first position according to the sending time of the first PRS and ephemeris information; and determining a second position according to the sending time of the second PRS and combining the ephemeris information.

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

The first terminal device may report the one or more pieces of information to the second device, so that the second device may calculate one or more of the information, the first location, and the second location of the first terminal device. For example, the first terminal device sends the third information to the second device. The information reported by the first terminal device to the second device is illustrated below by taking the first device as a satellite and taking the first signal and the second signal as PRS as examples.

For example, the first terminal device may report the detected phase information, the satellite ID corresponding to the phase information, and the first information.

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. The PRS detection timestamp may be used to determine where the PRS was transmitted by the satellite.

For another example, the first terminal device may report the detected phase information, the satellite ID corresponding to the phase information, the PRS detection timestamp, and the detection timestamp related information.

As another example, the first terminal device may report the phase difference of the first signal and the second signal.

In some embodiments, the transmission interval between the first signal and the second signal may be greater than a threshold. The threshold may be associated with one or more of: transmission delay between the first terminal device and the first device, processing delay of the first terminal device.

In the case where the first signal and the second signal belong to a plurality of signals transmitted periodically, a transmission interval (abbreviated as a period interval) between any adjacent two signals among the plurality of signals may be greater than a threshold.

It will be appreciated that for a plurality of signals transmitted periodically, the first location and/or the second location of the first device may be determined in an aperiodic case when the periodic interval is greater than a threshold.

Having described in detail method embodiments of the present application, device embodiments of the present application are described in detail below. It is to be understood that the description of the method embodiments corresponds to the description of the device embodiments, and that parts not described in detail can therefore be seen in the preceding method embodiments.

Fig. 3 is a schematic block diagram of a communication device 300 according to an embodiment of the present application. The communication device 300 is a first device. The communication device 300 includes: a first transmitting unit 310.

The first transmitting unit 310 is configured to transmit a first signal and a second signal to a first terminal device; the phase of the first signal and the phase of the second signal are in a first relation at the first equipment side, the first signal and the second signal are used for determining first phase information, the first phase information comprises a receiving phase difference between the first signal and the second signal at the first terminal equipment side, the position of the first equipment for transmitting the first signal is a first position, the position of the first equipment for transmitting the second signal is a second position, and the first position and the second position are different.

In some embodiments, the communication device 300 is further configured to: sending auxiliary information to a first terminal device; wherein the auxiliary information is used to indicate the first relationship.

In some embodiments, the assistance information is carried on higher layer signaling.

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

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

In some embodiments, the first relationship satisfies one or more of: network device configured, protocol defined.

In some embodiments, the first relationship comprises: the phase of the first signal and the phase of the second signal are identical on the first device side.

In some embodiments, the first relationship comprises: the phase of the first signal and the phase of the second signal are continuous in time at the first device side.

In some embodiments, the phase of the first signal and the phase of the second signal are continuous in time, comprising: the phase of the first signal and the phase of the second signal satisfy at the first device side: wherein/> Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

In some embodiments, the communication device 300 is further configured to: transmitting first information to a first terminal device; wherein the first information is for performing one or more of: configuring a first signal and a second signal; indicating whether the first terminal equipment needs to calculate a receiving phase difference; indicating whether a plurality of signals transmitted by the first device support phase estimation differencing; indicating whether the first signal and the second signal support phase estimation differencing.

In some embodiments, the first information is used to configure one or more of: the transmission time of the first signal; the time of reception of the first signal; the transmission time of the second signal; the time of receipt of the second signal.

In some embodiments, the first signal comprises a first positioning reference signal PRS; and/or, the second signal comprises a second PRS.

In some embodiments, the first device comprises an NTN device.

In some embodiments, the received phase difference satisfies: Or alternatively, the first and second heat exchangers may be, Wherein/>Representing the receive phase difference,/>Representing the phase of the first signal at the first device side,Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

In an alternative embodiment, the first transmitting unit 310 may be a transceiver 530. The communication device 300 may also include a processor 510 and a memory 520, as shown in particular in fig. 5.

Fig. 4 is a schematic block diagram of a terminal device 400 according to an embodiment of the present application. The terminal device 400 is a first terminal device. The terminal device 400 includes: a first receiving unit 410.

The first receiving unit 410 is configured to receive a first signal and a second signal sent by a first device; the phase of the first signal and the phase of the second signal are in a first relation at the first equipment side, the first signal and the second signal are used for determining first phase information, the first phase information comprises a receiving phase difference between the first signal and the second signal at the first terminal equipment side, the position of the first equipment for transmitting the first signal is a first position, the position of the first equipment for transmitting the second signal is a second position, and the first position and the second position are different.

In some embodiments, the terminal device 400 is further configured to: receiving auxiliary information sent by first equipment; wherein the auxiliary information is used to indicate the first relationship.

In some embodiments, the assistance information is carried on higher layer signaling.

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

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

In some embodiments, the first relationship satisfies one or more of: network device configured, protocol defined.

In some embodiments, the first relationship comprises: the phase of the first signal and the phase of the second signal are identical on the first device side.

In some embodiments, the first relationship comprises: the phase of the first signal and the phase of the second signal are continuous in time at the first device side.

In some embodiments, the phase of the first signal and the phase of the second signal are continuous in time, comprising: the phase of the first signal and the phase of the second signal satisfy at the first device side: wherein/> Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

In some embodiments, the terminal device 400 is further configured to: receiving first information sent by first equipment; wherein the first information is for performing one or more of: configuring a first signal and a second signal; indicating whether the first terminal equipment needs to calculate a receiving phase difference; indicating whether a plurality of signals transmitted by the first device support phase estimation differencing; indicating whether the first signal and the second signal support phase estimation differencing.

In some embodiments, the first information is used to configure one or more of: the transmission time of the first signal; the time of reception of the first signal; the transmission time of the second signal; the time of receipt of the second signal.

In some embodiments, the first signal comprises a first positioning reference signal PRS; and/or, the second signal comprises a second PRS.

In some embodiments, the first device comprises an NTN device.

In some embodiments, the received phase difference satisfies: Or alternatively, the first and second heat exchangers may be, Wherein/>Representing the receive phase difference,/>Representing the phase of the first signal at the first device side,Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

In an alternative embodiment, the first receiving units 410 may each be a transceiver 530. The terminal device 400 may also include a processor 510 and a memory 520, as shown in particular in fig. 5.

Fig. 5 is a schematic structural diagram of an apparatus for communication according to an embodiment of the present application. The dashed lines in fig. 5 indicate that the unit or module is optional. The apparatus 500 may be used to implement the methods described in the method embodiments above. The apparatus 500 may be a chip, a terminal device or a network device.

The apparatus 500 may include one or more processors 510. The processor 510 may support the apparatus 500 to implement the methods described in the method embodiments 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 (central processing unit, CPU). Or the processor may be another general purpose processor, a digital signal processor (DIGITAL SIGNAL processor), an Application SPECIFIC INTEGRATED Circuit (ASIC), a field programmable gate array (field programmable GATE ARRAY, FPGA) or other programmable logic device, a discrete gate or transistor logic device, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

The apparatus 500 may also include one or more memories 520. The memory 520 has stored thereon a program that is executable by the processor 510 to cause the processor 510 to perform the method described in the method embodiments above. The memory 520 may be separate from the processor 510 or may be integrated within the processor 510.

The apparatus 500 may also include a transceiver 530. The processor 510 may communicate with other devices or chips through the transceiver 530. For example, the processor 510 may transmit and receive data to and from other devices or chips through the transceiver 530.

The embodiment of the application also provides a computer readable storage medium for storing a program. The computer-readable storage medium may be applied to a terminal or a network device provided in an embodiment of the present application, and the program causes a computer to execute the method performed by the terminal or the network device in the respective embodiments of the present application.

The embodiment of the application also provides a computer program product. The computer program product includes a program. The computer program product may be applied to a terminal or a network device provided in an embodiment of the present application, and the program causes a computer to execute the method executed by the terminal or the network device in the respective embodiments of the present application.

The embodiment of the application also provides a computer program. The computer program can be applied to a terminal or a network device provided in an embodiment of the present application, and cause a computer to perform a method performed by the terminal or the network device in each embodiment of the present application.

It should be understood that the terms "system" and "network" may be used interchangeably herein. In addition, the terminology used herein is for the purpose of describing particular embodiments of the application only and is not intended to be limiting of the application. The terms "first," "second," "third," and "fourth" and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiment of the present application, the "indication" may be a direct indication, an indirect indication, or an indication having an association relationship. For example, a indicates B, which may mean that a indicates B directly, e.g., B may be obtained by a; it may also indicate that a indicates B indirectly, e.g. a indicates C, B may be obtained by C; it may also be indicated that there is an association between a and B.

In the embodiment of the application, "B corresponding to A" means that B is associated with A, from which B can be determined. It should also be understood that determining B from a does not mean determining B from a alone, but may also determine B from a and/or other information.

In the embodiment of the present application, the term "corresponding" may indicate that there is a direct correspondence or an indirect correspondence between the two, or may indicate that there is an association between the two, or may indicate a relationship between the two and the indicated, configured, etc.

In the embodiment of the present application, the "pre-defining" or "pre-configuring" may be implemented by pre-storing corresponding codes, tables or other manners that may be used to indicate relevant information in devices (including, for example, terminal devices and network devices), and the present application is not limited to the specific implementation manner thereof. Such as predefined may refer to what is defined in the protocol.

In the embodiment of the present application, the "protocol" may refer to a standard protocol in the communication field, for example, may include an LTE protocol, an NR protocol, and related protocols applied in a future communication system, which is not limited in the present application.

In the embodiment of the present application, the term "and/or" is merely an association relationship describing the association object, which indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In embodiments of the application, the term "comprising" may refer to either direct or indirect inclusion. Alternatively, references to "comprising" in embodiments of the present application may be replaced with "indicating" or "for determining". For example, a includes B, which may be replaced with a indicating B, or a used to determine B.

In various embodiments of the present application, the sequence number of each process does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, may 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 loaded and executed on a computer, produces a flow or function in accordance with embodiments of the present application, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may 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 may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be read by a computer or a data storage device such as a server, data center, etc. that contains an integration of one or more available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., digital versatile disk (digital video disc, DVD)), or a semiconductor medium (e.g., solid State Disk (SSD)), etc.

The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims (63)

1. A method of wireless communication, comprising:

the first device sends a first signal and a second signal to the first terminal device;

The relation between the phase of the first signal and the phase of the second signal at the first device side is a first relation, 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 at the first terminal device side, the position of the first device for transmitting the first signal is a first position, the position of the first device for transmitting the second signal is a second position, and the first position and the second position are different.

2. The method according to claim 1, wherein the method further comprises:

the first equipment sends auxiliary information to the first terminal equipment;

Wherein the auxiliary information is used to indicate the first relationship.

3. The method of claim 2, wherein the assistance information is carried on higher layer signaling.

4. A method according to claim 2 or 3, wherein the first relationship comprises one or more of:

a transmission phase difference between the first signal and the second signal at the first device side;

and the equivalent time difference corresponding to the transmission phase difference.

5. The method of claim 4, wherein the transmission phase difference and the equivalent time difference satisfy:

transmit phase difference = mod (2pi f equivalent time difference, 2pi);

Where f represents the carrier frequency of the first signal or the second signal, mod () represents a modulo operation.

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

7. The method of any one of claims 1-6, wherein the first relationship comprises: the phase of the first signal and the phase of the second signal are the same on the first device side.

8. The method of any one of claims 1-6, wherein the first relationship comprises: the phase of the first signal and the phase of the second signal are continuous in time at the first device side.

9. The method of claim 8, wherein the phase of the first signal and the phase of the second signal are continuous in time, comprising: the phase of the first signal and the phase of the second signal satisfy at the first device side:

wherein, Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

10. The method according to any one of claims 1-9, further comprising:

the first device sends first information to the first terminal device;

wherein the first information is for performing one or more of:

Configuring the first signal and the second signal;

Indicating whether the first terminal device needs to calculate the reception phase difference;

indicating whether a plurality of signals transmitted by the first device support phase estimation differencing;

indicating whether the first signal and the second signal support phase estimation differencing.

11. The method of claim 10, wherein the first information is used to configure one or more of:

The sending time of the first signal;

the time of reception of the first signal;

the sending time of the second signal;

the time of reception of the second signal.

12. The method of any one of claims 1-11, wherein the first signal comprises a first positioning reference signal, PRS; and/or, the second signal includes a second PRS.

13. The method of any of claims 1-12, wherein the first device comprises a non-terrestrial network NTN device.

14. The method according to any one of claims 1-13, wherein the received phase difference satisfies:

Or alternatively, the first and second heat exchangers may be,

Wherein,Representing the reception phase difference,/>Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

15. A method of wireless communication, comprising:

The first terminal equipment receives a first signal and a second signal sent by the first equipment;

The relation between the phase of the first signal and the phase of the second signal at the first device side is a first relation, 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 at the first terminal device side, the position of the first device for transmitting the first signal is a first position, the position of the first device for transmitting the second signal is a second position, and the first position and the second position are different.

16. The method of claim 15, wherein the method further comprises:

The first terminal equipment receives auxiliary information sent by the first equipment;

Wherein the auxiliary information is used to indicate the first relationship.

17. The method of claim 16, wherein the assistance information is carried on higher layer signaling.

18. The method of claim 16 or 17, wherein the first relationship comprises one or more of:

a transmission phase difference between the first signal and the second signal at the first device side;

and the equivalent time difference corresponding to the transmission phase difference.

19. The method of claim 18, wherein the transmission phase difference and the equivalent time difference satisfy:

transmit phase difference = mod (2pi f equivalent time difference, 2pi);

Where f represents the carrier frequency of the first signal or the second signal, mod () represents a modulo operation.

20. The method of claim 15, wherein the first relationship satisfies one or more of: network device configured, protocol defined.

21. The method of any one of claims 15-20, wherein the first relationship comprises: the phase of the first signal and the phase of the second signal are the same on the first device side.

22. The method of any one of claims 15-20, wherein the first relationship comprises: the phase of the first signal and the phase of the second signal are continuous in time at the first device side.

23. The method of claim 22, wherein the phase of the first signal and the phase of the second signal are continuous in time, comprising: the phase of the first signal and the phase of the second signal satisfy at the first device side:

wherein, Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

24. The method according to any one of claims 15-23, further comprising:

the first terminal equipment receives first information sent by the first equipment;

wherein the first information is for performing one or more of:

Configuring the first signal and the second signal;

Indicating whether the first terminal device needs to calculate the reception phase difference;

indicating whether a plurality of signals transmitted by the first device support phase estimation differencing;

indicating whether the first signal and the second signal support phase estimation differencing.

25. The method of claim 24, wherein the first information is used to configure one or more of:

The sending time of the first signal;

the time of reception of the first signal;

the sending time of the second signal;

the time of reception of the second signal.

26. The method of any one of claims 15-25, wherein the first signal comprises a first positioning reference signal, PRS; and/or, the second signal includes a second PRS.

27. The method of any one of claims 15-26, wherein the first device comprises a non-terrestrial network NTN device.

28. The method according to any one of claims 15-27, wherein the received phase difference satisfies:

Or alternatively, the first and second heat exchangers may be,

Wherein,Representing the reception phase difference,/>Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

29. A communication device, wherein the communication device is a first device, the communication device comprising:

A first transmitting unit, configured to transmit a first signal and a second signal to a first terminal device;

The relation between the phase of the first signal and the phase of the second signal at the first device side is a first relation, 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 at the first terminal device side, the position of the first device for transmitting the first signal is a first position, the position of the first device for transmitting the second signal is a second position, and the first position and the second position are different.

30. The communication device of claim 29, wherein the communication device is further configured to:

Sending auxiliary information to the first terminal equipment;

Wherein the auxiliary information is used to indicate the first relationship.

31. The communication device of claim 30, wherein the assistance information is carried by higher layer signaling.

32. The communication device of claim 30 or 31, wherein the first relationship comprises one or more of:

a transmission phase difference between the first signal and the second signal at the first device side;

and the equivalent time difference corresponding to the transmission phase difference.

33. The communication device of claim 32, wherein the transmission phase difference and the equivalent time difference satisfy:

transmit phase difference = mod (2pi f equivalent time difference, 2pi);

Where f represents the carrier frequency of the first signal or the second signal, mod () represents a modulo operation.

34. The communication device of claim 29, wherein the first relationship satisfies one or more of: network device configured, protocol defined.

35. The communication device of any of claims 29-34, wherein the first relationship comprises: the phase of the first signal and the phase of the second signal are the same on the first device side.

36. The communication device of any of claims 29-34, wherein the first relationship comprises: the phase of the first signal and the phase of the second signal are continuous in time at the first device side.

37. The communication device of claim 36, wherein the phase of the first signal and the phase of the second signal are continuous in time, comprising: the phase of the first signal and the phase of the second signal satisfy at the first device side:

wherein, Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

38. The communication device according to any of claims 29-37, wherein the communication device is further configured to:

Sending first information to the first terminal equipment;

wherein the first information is for performing one or more of:

Configuring the first signal and the second signal;

Indicating whether the first terminal device needs to calculate the reception phase difference;

indicating whether a plurality of signals transmitted by the first device support phase estimation differencing;

indicating whether the first signal and the second signal support phase estimation differencing.

39. The communication device of claim 38, wherein the first information is used to configure one or more of:

The sending time of the first signal;

the time of reception of the first signal;

the sending time of the second signal;

the time of reception of the second signal.

40. The communication device of any of claims 29-39, wherein the first signal comprises a first positioning reference signal PRS; and/or, the second signal includes a second PRS.

41. The communication device of any of claims 29-40, wherein the first device comprises a non-terrestrial network NTN device.

42. The communication device of any one of claims 29-41, wherein the received phase difference satisfies:

Or alternatively, the first and second heat exchangers may be,

Wherein,Representing the reception phase difference,/>Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

43. A terminal device, wherein the terminal device is a first terminal device, the terminal device comprising:

the first receiving unit is used for receiving a first signal and a second signal sent by the first equipment;

The relation between the phase of the first signal and the phase of the second signal at the first device side is a first relation, 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 at the first terminal device side, the position of the first device for transmitting the first signal is a first position, the position of the first device for transmitting the second signal is a second position, and the first position and the second position are different.

44. The terminal device of claim 43, wherein the terminal device is further configured to:

Receiving auxiliary information sent by the first equipment;

Wherein the auxiliary information is used to indicate the first relationship.

45. The terminal device of claim 44, wherein the assistance information is carried by higher layer signaling.

46. The terminal device of claim 44 or 45, wherein the first relationship comprises one or more of:

a transmission phase difference between the first signal and the second signal at the first device side;

and the equivalent time difference corresponding to the transmission phase difference.

47. The terminal device of claim 46, wherein the transmission phase difference and the equivalent time difference satisfy:

transmit phase difference = mod (2pi f equivalent time difference, 2pi);

Where f represents the carrier frequency of the first signal or the second signal, mod () represents a modulo operation.

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

49. The terminal device of any of claims 43-48, wherein the first relationship comprises: the phase of the first signal and the phase of the second signal are the same on the first device side.

50. The terminal device of any of claims 43-48, wherein the first relationship comprises: the phase of the first signal and the phase of the second signal are continuous in time at the first device side.

51. The terminal device of claim 50, wherein the phase of the first signal and the phase of the second signal are continuous in time, comprising: the phase of the first signal and the phase of the second signal satisfy at the first device side:

wherein, Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

52. The terminal device according to any of the claims 43-51, characterized in that the terminal device is further adapted to:

Receiving first information sent by the first equipment;

wherein the first information is for performing one or more of:

Configuring the first signal and the second signal;

Indicating whether the first terminal device needs to calculate the reception phase difference;

indicating whether a plurality of signals transmitted by the first device support phase estimation differencing;

indicating whether the first signal and the second signal support phase estimation differencing.

53. The terminal device of claim 52, wherein the first information is used to configure one or more of:

The sending time of the first signal;

the time of reception of the first signal;

the sending time of the second signal;

the time of reception of the second signal.

54. The terminal device of any of claims 43-53, wherein the first signal comprises a first positioning reference signal, PRS; and/or, the second signal includes a second PRS.

55. The terminal device of any of claims 43-54, wherein the first device comprises a non-terrestrial network NTN device.

56. The terminal device according to any of the claims 43-55, wherein the received phase difference satisfies:

Or alternatively, the first and second heat exchangers may be,

Wherein,Representing the reception phase difference,/>Representing the phase of the first signal at the first device side,/>Representing the phase of the second signal at the first device side, f representing the carrier frequency of the first signal or the second signal, Δt representing the time interval between the first signal and the second signal, mod () representing the modulo operation.

57. A terminal device comprising a memory for storing a program and a processor for invoking the program in the memory to cause the terminal device to perform the method of any of claims 1-14.

58. A communication device comprising a memory for storing a program and a processor for invoking the program in the memory to cause the communication device to perform the method of any of claims 15-28.

59. An apparatus comprising a processor to invoke a program from a memory to cause the apparatus to perform the method of any of claims 1-28.

60. A chip comprising a processor for calling a program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1-28.

61. A computer-readable storage medium, having stored thereon a program that causes a computer to perform the method of any of claims 1-28.

62. A computer program product comprising a program for causing a computer to perform the method of any one of claims 1-28.

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