Positioning of wireless devices

Abstract

A wireless communication apparatus and method are disclosed. The wireless communication method of user equipment (UE) comprises at least one of the following steps: the UE transmits a first signal and / or a second signal from network equipment, and / or transmits the first signal and / or the second signal to the network equipment; the UE performs positioning measurement based on the first signal and / or the second signal; or the UE reports the auxiliary information to the network equipment.

Description

Technical Field

[0001] The present disclosure relates to the field of communication systems, and more particularly, to a wireless communication device and method capable of providing good communication performance and / or high reliability. Background Art

[0002] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcast, etc. These systems are capable of supporting communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, advanced LTE (LTE-Advanced, LTE-A) systems or more advanced LTE (LTE-A Pro) systems, and fifth generation (5G) systems, which may be referred to as new radio (NR) systems. These systems may use techniques such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), or Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include multiple base stations or network access nodes, each of which simultaneously supports communications for multiple communication devices, which may also be referred to as User Equipment (UE).

[0003] In a wireless communication system, the timing advance (TA) values ​​corresponding to different times may vary greatly. Therefore, a wireless communication device and method for positioning is needed. Summary of the invention

[0004] The purpose of the present disclosure is to propose a wireless communication device (such as UE and / or network equipment) and method, which can provide system positioning, reduce network signaling, reduce power consumption, provide good communication performance and / or provide high reliability.

[0005] In a first aspect of the present disclosure, a wireless communication method for a user equipment UE is provided, comprising at least one of the following: the UE transmits a first signal and / or a second signal from a network device, and / or transmits the first signal and / or the second signal to the network device; the UE performs positioning measurements based on the first signal and / or the second signal; or the UE reports auxiliary information to the network device.

[0006] In a second aspect of the present disclosure, a wireless communication method for a network device is provided, comprising at least one of the following: the network device transmits a first signal and / or a second signal from a user equipment UE, and / or transmits the first signal and / or the second signal to the UE; the network device performs positioning measurements based on the first signal and / or the second signal; or the network device detects auxiliary information reported by the UE.

[0007] In some embodiments of any of the above methods, the network device includes: a base station, a core network, a transmission reception point (Transmission Reception Point, TRP), a satellite or a location management function (Location Management Function, LMF).

[0008] In some embodiments of any of the above methods, the first signal is configured to be associated with a first transmission reception point TRP, and the second signal is configured to be associated with a second TRP.

[0009] In some embodiments of any of the above methods, the first TRP is associated with the first satellite, the second TRP is associated with the second satellite, or the second TRP is associated with the first satellite.

[0010] In some embodiments of any of the above methods, a first TRP is associated with a first satellite corresponding to a first time, and a second TRP is associated with a first satellite corresponding to a second time, wherein the first time and / or the second time comprises: a time instance, a time period, or a time interval.

[0011] In some embodiments of any of the above methods, the first signal includes a first downlink reference signal (Downlink Reference Signal, DRS) and / or a first uplink reference signal (Uplink Reference Signal, URS), and / or the second signal includes a second DRS or a second URS.

[0012] In some embodiments of any of the above methods, DRS includes: DRS includes: Positioning Reference Signal (PRS), Synchronization Signal Block (SSB) or Channel State Information Reference Signal (CSI-RS); and / or URS includes Sounding Reference Signal (SRS), Physical Random Access Channel (PRACH), Physical Uplink Control Channel (PUCCH) or Physical Uplink Shared Channel (PUSCH).

[0013] In some embodiments of any of the above methods, the UE transmits the first signal and / or the second signal from the network device, and / or transmits the first signal and / or the second signal to the network device, including: when the UE receives a downlink reference signal DRS from a reference transmission receiving point TRP, the UE determines a reference subframe or time slot, and the reference subframe or time slot is the subframe or time slot in which the UE receives the DRS from the reference TRP.

[0014] In some embodiments of any of the above methods, the UE determines a first subframe index or a time slot index, wherein the first subframe index or the time slot index is an index of a reference subframe or a time slot.

[0015] In some embodiments of any of the above methods, the reference TRP is the first TRP.

[0016] In some embodiments of any of the above methods, the UE transmits the first signal and / or the second signal from the network device, and / or transmits the first signal and / or the second signal to the network device, including: when the UE receives the second DRS from the second TRP, the UE determines a second subframe or time slot, and the UE receives the second DRS in the second subframe or time slot.

[0017] In some embodiments of any of the above methods, performing positioning measurements based on the first signal and / or the second signal includes: the UE determines a first boundary and a second boundary, wherein the first boundary is a boundary of a reference subframe or time slot, and the second boundary is a boundary of a subframe or time slot corresponding to the first subframe index or time slot index.

[0018] In some embodiments of any of the above methods, the second boundary is determined according to a boundary of a second subframe or time slot.

[0019] In some embodiments of any of the above methods, the positioning measurement further includes calculating a time difference between the first boundary and the second boundary.

[0020] In some embodiments of any of the above methods, the network device uses the auxiliary information to obtain first information of a first timing advance TA corresponding to the service link, second information of a second TA corresponding to a common TA, and / or an offset value.

[0021] In some embodiments, the first TA and / or the second TA includes one or more TA values, wherein the one or more TA values ​​correspond to TAs applied at different time instances.

[0022] In some embodiments of any of the above methods, a first TA is applied to the transmission of a first uplink reference signal URS to compensate for the round-trip time RTT between the UE and a satellite or TRP; a second TA is applied to the first URS transmission to compensate for the RTT between the satellite or TRP and an uplink synchronization reference point.

[0023] In some embodiments of any of the above methods, the first information is derived based on the second information and an offset value; and / or the second information is derived based on the first information and an offset value.

[0024] In some embodiments of any of the above methods, the network device derives a subframe or time slot boundary in which the network device receives a first URS; and / or the network device estimates a second offset between the derived subframe or time slot boundary and the closest downlink subframe or time slot boundary closest to the derived subframe or time slot boundary.

[0025] In some embodiments of any of the above methods, the second offset is reported by the base station to the location management function LMF.

[0026] In some embodiments of any of the above methods, the second offset refers to a TA error caused by the first TA and / or the second TA.

[0027] In some embodiments of any of the above methods, the TA error is a time difference between a boundary of an uplink subframe and a boundary of a downlink subframe; and / or a downlink subframe overlaps with an uplink subframe or a downlink subframe overlaps with an uplink subframe with a delay.

[0028] In some embodiments of any of the above methods, the first TA error is reported by the base station to the LMF or the first TA error is calculated by the base station or the LMF, and the first TA represents the service link RTT and / or the first TA error is used to estimate the positioning.

[0029] In some embodiments of any of the above methods, the base station or LMF calculates the precise TA value of the second TA using the uplink synchronization reference point USRP position and the satellite position; and / or the base station or LMF calculates the second TA error by comparing the precise TA value of the second TA with the second TA reported by the UE.

[0030] In some embodiments of any of the above methods, the first TA error is derived by the base station by subtracting the second TA error from the second offset.

[0031] In some embodiments of any of the above methods, the USRP position and the satellite position are reported by the base station to the LMF.

[0032] In a third aspect of the present disclosure, a user equipment is provided, comprising: a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to execute the above method.

[0033] In a fourth aspect of the present disclosure, a network device is provided, comprising: a memory, a transceiver, and a processor coupled to the memory and the transceiver. The processor is configured to execute the above method.

[0034] In a fifth aspect of the present disclosure, a wireless communication device is provided, comprising an executor configured to execute the above method.

[0035] In a sixth aspect of the present disclosure, a non-transitory machine-readable storage medium is provided, on which instructions are stored, and when the instructions are executed by a computer, the computer executes the above method.

[0036] In a seventh aspect of the present disclosure, a chip is provided, comprising a processor, wherein the processor is configured to call and run a computer program stored in a memory so that a device equipped with the chip executes the above method.

[0037] In an eighth aspect of the present disclosure, a computer-readable storage medium is provided, on which a computer program is stored, the computer program causing a computer to execute the above method

[0038] In a ninth aspect of the present disclosure, a computer program product is provided, comprising a computer program, and the computer program enables a computer to execute the above method.

[0039] In a tenth aspect of the present disclosure, a computer program is provided, which enables a computer to execute the above method. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present disclosure or related technologies, the following drawings that will be described in the embodiments are briefly introduced. It is obvious that these drawings are only some embodiments of the present disclosure, and ordinary technicians in this field can obtain other drawings based on these drawings without paying creative work.

[0041] Figure 1A It is a schematic structural diagram of a communication system according to an embodiment of the present application.

[0042] Figure 1B It is a schematic structural diagram of another communication system according to an embodiment of the present application.

[0043] Figure 1C It is a schematic structural diagram of another communication system according to an embodiment of the present application.

[0044] Figure 2 is a schematic diagram of a positioning scenario according to an embodiment of the present application;

[0045] Figure 3 It is a schematic diagram of the principle of the time difference of arrival (TDOA) positioning method according to an embodiment of the present application.

[0046] Figure 4 is a block diagram of one or more UEs and network devices communicating in a communication network system according to an embodiment of the present disclosure.

[0047] Figure 5 is a flowchart of a wireless communication method performed by a UE according to an embodiment of the present disclosure.

[0048] Figure 6 is a flowchart of a wireless communication method performed by a network device according to an embodiment of the present disclosure.

[0049] Figure 7 is a block diagram of a UE and a network device communicating in a communication network system (eg, a non-terrestrial network (NTN)) according to an embodiment of the present disclosure.

[0050] Figure 8 is a block diagram of a UE and a network device communicating in a communication network system (eg, NTN) according to an embodiment of the present disclosure.

[0051] Fig. 9A is a block diagram of a UE and a network device communicating in a communication network system (eg, NTN) according to an embodiment of the present disclosure.

[0052] Fig. 9B is a block diagram of a UE and a network device communicating in a communication network system (eg, NTN) according to an embodiment of the present disclosure.

[0053] Fig. 9C is a block diagram of a UE and a network device communicating in a communication network system (eg, NTN) according to an embodiment of the present disclosure.

[0054] Fig.9D is a block diagram of a UE and a network device communicating in a communication network system (eg, NTN) according to an embodiment of the present disclosure.

[0055] Fig.10 It is a schematic diagram of positioning of a communication network system according to an embodiment of the present disclosure.

[0056] Fig.11 It is a schematic diagram of positioning of a communication network system according to an embodiment of the present disclosure.

[0057] Fig.12 It is a schematic diagram of positioning of a communication network system according to an embodiment of the present disclosure.

[0058] Fig.13 It is a schematic diagram of positioning of a communication network system according to an embodiment of the present disclosure.

[0059] Fig.14 The present invention is a flowchart of a communication network system positioning according to an embodiment of the present disclosure.

[0060] Fig.15 The present invention is a flowchart of a communication network system positioning according to an embodiment of the present disclosure.

[0061] Fig.16 is a block diagram of a wireless communication device according to an embodiment of the present disclosure.

[0062] Fig.17 is a block diagram of a wireless communication device according to an embodiment of the present disclosure.

[0063] Fig.18 is a block diagram of a wireless communication system according to an embodiment of the present disclosure. DETAILED DESCRIPTION

[0064] The technical content, structural features, objectives and effects of the embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. Specifically, the terms in the embodiments of the present disclosure are only used to describe specific embodiments, rather than to limit the present disclosure.

[0065] The technical solutions of the embodiments of the present disclosure can be applied to various communication systems, such as Global System Of Mobile Communication (GSM) system, CDMA system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), LTE system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD) system, LTE-A system, NR system, NR system evolution system, LTE-based unlicensed spectrum access (LTE-Based Access To Unlicensed Spectrum, LTE-U) system, NR-based unlicensed spectrum access (NR-Based Access To Unlicensed Spectrum, NR-U) system, Universal Mobile Telecommunication System (UMTS), Global Interoperability For Microwave Access (Wimax) communication system, Wireless Local Area Network (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, Wi-Fi), future 5G system (also called NR system) or other communication systems.

[0066] Optionally, the network device or network node mentioned in the embodiment of the present application can provide communication coverage for a specific geographical area, and can communicate with terminal devices located in the coverage area. Optionally, the network device can be a base transceiver station (Base Transceiver Station, BTS) in a GSM or CDMA system, or a base station (NodeB or NB) in a WCDMA system, or an evolved base station (eNodeB or eNB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN). Alternatively, the network device can be a relay station, an access point, a vehicle-mounted device, a wearable device, a network-side device in a future 5G network, or a network device in a future evolved public land mobile network (Public Land Mobile Network, PLMN).

[0067] The terminal device of the implementation mode may be mobile or fixed. The terminal device may refer to an access terminal, a UE, a user unit, a user station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. The access terminal may be a cellular wireless phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (Wireless Local Loop, WLL) station, a Personal Digital Assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication function, a computing device, other processing devices connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network, or a terminal device in a future evolved PLMN, etc.

[0068] Optionally, the communication system in the embodiment of the present application can be applied to an unlicensed spectrum, where the unlicensed spectrum can also be regarded as a shared spectrum; or the communication system in the embodiment of the present application can also be applied to an authorized spectrum, where the authorized spectrum can also be regarded as an unshared spectrum.

[0069] Optionally, the embodiments of the present application may be applied to an NTN (or non-terrestrial communication network) system or a terrestrial network (Terrestrial Network, TN, or terrestrial communication network) system.

[0070] As an example, in an embodiment of the present application, the network device may have a mobile characteristic, for example, the network device may be a mobile device. Optionally, the network device may be a satellite or a balloon station. For example, the satellite may be a Low Earth Orbit (LEO) satellite, a Medium Earth Orbit (MEO) satellite, a Geostationary Earth Orbit (GEO) satellite, a High Elliptical Orbit (HEO) satellite, etc. Optionally, the network device may also be a base station set in a location such as land or water.

[0071] Communication system scenarios can include TN and NTN. NTN can use satellite communications to provide communication services to ground users. NTN systems currently include NR-NTN systems and Internet of Things (IoT)-NTN systems.

[0072] For example, Figure 1A is a schematic structural diagram of a communication system according to an embodiment of the present application. Figure 1AAs shown, the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal or terminal). The network device 110 may provide communication coverage for a specific geographic area and may communicate with terminal devices located in the coverage area. Figure 1A One network device and two terminal devices are exemplarily shown. In some embodiments, the communication system 100 may include multiple network devices, and each network device may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0073] For example, Figure 1B is a schematic structural diagram of another communication system according to an embodiment of the present application. Figure 1B , the communication system includes a terminal device 1101 and a satellite 1102, and wireless communication can be performed between the terminal device 1101 and the satellite 1102. The network formed between the terminal device 1101 and the satellite 1102 can also be referred to as an NTN. Figure 1B In the architecture of the communication system shown, the satellite 1102 may have the function of a base station, and the terminal device 1101 and the satellite 1102 may communicate directly. In the system architecture, the satellite 1102 may be referred to as a network device. Optionally, the communication system may include multiple network devices 1102, and each network device 1102 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0074] For example, Figure 1C is a schematic structural diagram of another communication system according to an embodiment of the present application. Figure 1C , the communication system includes a terminal device 1201, a satellite 1202, and a base station 1203. The terminal device 1201 and the satellite 1202 can communicate wirelessly, and the satellite 1202 and the base station 1203 can communicate with each other. The network formed between the terminal device 1201, the satellite 1202, and the base station 1203 can also be called an NTN. Figure 1C In the architecture of the communication system shown, the satellite 1202 may not have the function of a base station, and the communication between the terminal device 1201 and the base station 1203 needs to be transferred through the satellite 1202. In this system architecture, the base station 1203 can be called a network device. In some embodiments of the present application, the communication system may include multiple network devices 1203, and each network device 1203 may include other number of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0075] In the NTN system, the network equipment needs to send synchronization assistance information to the terminal equipment, and the synchronization assistance information is used for the terminal equipment to complete time domain and / or frequency domain synchronization. The synchronization assistance information is used to indicate at least one of the following information: service satellite ephemeris information, public timing value (such as TA parameter), reference time indication information (epoch time, used to determine time t0) and the duration of the target timer.

[0076] The terminal device completes the corresponding time domain and / or frequency domain synchronization according to the synchronization assistance information and its own global navigation satellite system (GNSS) capability. The terminal device can obtain at least one of the following information based on its GNSS capability: the location of the terminal device, the time reference, and the frequency reference. In addition, based on the above information and the information obtained from the synchronization assistance information, the terminal device can obtain the timing offset and / or frequency offset, and apply the timing advance compensation and / or frequency offset adjustment in the idle state, the inactive state, or the connected state.

[0077] Since the satellite is moving, the synchronization assistance information may change over time. For example, the ephemeris information of the service satellite may change over time. The public timing value (e.g., TA parameter) may include: public timing value, public timing value offset value (e.g., the first-order derivative of the public timing value), the rate of change of the offset value of the public timing value (e.g., the second-order derivative of the public timing value), etc. The terminal device may determine the service satellite ephemeris information at different times based on the synchronization assistance information, and determine the public TA at different times, thereby obtaining the timing advance value at different times. That is to say, in the NTN system, the TA values ​​corresponding to different times may be very different.

[0078] In the NR system, the supported positioning methods include the downlink time difference of arrival (DL-TDOA) positioning method, the uplink time difference of arrival (UL-TDOA) positioning method and the multi-round trip time (RTT) positioning method.

[0079] The propagation time of a signal is directly related to the propagation distance, so the deviation between the transmission time of signals sent by multiple network nodes (i.e., TRP) to the terminal also reflects the difference in distance between the multiple network nodes and the terminal. The basic principle of the DL-TDOA positioning method is to estimate the location of the terminal based on the transmission time deviation of signals sent by multiple network nodes (i.e., TRP) to the terminal and the known location of the network nodes. The DL-TDOA positioning method is based on the unidirectional transmission of measurement signals between the network node (i.e., TRP) and the terminal, that is, the network node (i.e., TRP) sends the signal and the terminal performs the measurement.

[0080] Figure 2 Schematic diagram of a positioning scenario according to an embodiment of the present application. The following describes a DL-TDOA positioning method. Figure 2 As shown, there are 4 network nodes (M=4), which are denoted as TRP 1, TRP 2, TRP 3 and TRP 4. The three-dimensional coordinates and the sending timing error corresponding to the network node TRP i (i=1, 2, ..., M) are denoted as and respectively. The three-dimensional coordinates corresponding to the terminal (x i ,y i ,z i ) and the receiving timing error are expressed as The distance between the network node TRP i and the terminal is represented as di, and the arrival time (Time Of Arrival TOA) is calculated according to the following formula (where c represents the speed of light):

[0081]

[0082] In actual scenarios, by using high-precision equipment and appropriate deployment methods, network nodes can generally achieve relatively good synchronization accuracy. Even if there is a small synchronization error, it generally does not significantly affect the positioning accuracy. Therefore, we can usually assume that In a period of time, the timing error of the same terminal changes very little, so it can be considered that The basic principle of the TDOA positioning method is to eliminate the correlation term by taking the difference between two estimated TOAs. Assuming that TRP 1 is used as a reference (in this case, TRP 1 is called the reference TRP), the TOA differences corresponding to different TRPs are calculated, and M-1 constraint equations can be obtained:

[0083]

[0084] Similarly, if there is an error between the UE side timing and the network side timing, it can be seen from the above formula that the error is also eliminated. In order to obtain a more reliable solution containing the location information of K (e.g., 3) unknown variables, at least M≥K+1 (e.g., 4) network nodes are required.

[0085] Figure 3 is a schematic diagram of the principle of the TDOA positioning method according to an embodiment of the present application. Each equation in the equation group (2) can be regarded as a hyperbola with TRP i and TRP 1 as the focus. Therefore, using Figure 3 The physical meaning of the TDOA positioning method can be intuitively understood: draw the corresponding hyperbola with each pair of network nodes (TRP i, TRP 1) as the focus, and estimate the location where these hyperbolas intersect as the terminal location through the TDOA positioning method. Due to factors such as estimation errors, these hyperbolas usually do not intersect completely at one point, but intersect in a small area.

[0086] In the DL-TDOA positioning method, the terminal performs TDOA estimation based on the downlink positioning reference signal (Positioning Reference Signal, PRS), and the corresponding estimation is called the downlink signal time difference (i.e., downlink reference signal time difference, DL RSTD) in the NR protocol. DL RSTD is defined as the downlink relative timing difference Ti-T0 between the i-th TRP and the reference TRP, where T0 is the time corresponding to the starting point of the downlink subframe received by the terminal from the reference TRP (e.g., the starting point of the first downlink subframe), and Ti is the time corresponding to the starting point of the downlink subframe received by the terminal from the i-th TRP (e.g., the starting point of the second downlink subframe), where the second downlink subframe is the subframe closest to the first downlink subframe. In addition, in the DL-TDOA positioning method, in addition to measuring and reporting DL RSTD, the terminal can also selectively report the reference signal received power (Reference Signal Received Power, RSRP) value obtained based on the DL PRS measurement to assist the location management function (Location Management Function, LMF) to improve the accuracy of position estimation.

[0087] In some embodiments, Figure 4One or more UEs 10 and a network device 20 for transmission adjustment in a communication network system 30 (e.g., NTN or TN) provided by an embodiment of the present disclosure are shown. The communication network system 30 includes one or more UEs 10 and a network device 20. One or more UEs 10 may include a memory 12, a transceiver 13, and a processor 11 coupled to the memory 12 and the transceiver 13. The network device 20 may include a memory 22, a transceiver 23, and a processor 21 coupled to the memory 22 and the transceiver 23. The processor 11 or 21 may be configured to implement the proposed functions, processes, and / or methods described in this specification. The layers of the wireless interface protocol may be implemented in the processor 11 or 21. The memory 12 or 22 is operably coupled to the processor 11 or 21, and stores various information to operate the processor 11 or 21. The transceiver 13 or 23 is operably coupled to the processor 11 or 21, and the transceiver 13 or 23 is used to send and / or receive wireless signals.

[0088] The processor 11 or 21 may include an application-specific integrated circuit (ASIC), other chipsets, logic circuits and / or data processing devices. The memory 12 or 22 may include a read-only memory (ROM), a random access memory (RAM), a flash memory, a memory card, a storage medium and / or other storage devices. The transceiver 13 or 23 may include a baseband circuit for processing radio frequency signals. When the embodiment is implemented in software, the technology described herein may be implemented by a module (e.g., a program, a function, etc.) that performs the functions described herein. The module may be stored in the memory 12 or 22 and executed by the processor 11 or 21. The memory 12 or 22 may be implemented inside the processor 11 or 21 or outside the processor 11 or 21. When implemented externally, the memory 12 or 22 may be communicatively coupled to the processor 11 or 21 via various means known in the art.

[0089] In some embodiments, the processor 11 is configured to perform at least one of the following: transmitting the first signal and / or the second signal from and / or to the network device; performing positioning measurements based on the first signal and / or the second signal; or reporting auxiliary information to the network device. This can provide system positioning, reduce network signaling, reduce power consumption, provide good communication performance and / or provide high reliability.

[0090] In some embodiments, the processor 21 is configured to perform at least one of the following: transmitting the first signal and / or the second signal from and / or to the UE; performing positioning measurements based on the first signal and / or the second signal; or detecting auxiliary information reported by the UE. This can provide system positioning, reduce network signaling, reduce power consumption, provide good communication performance and / or provide high reliability.

[0091] Figure 5 A wireless communication method 500 performed by a UE according to an embodiment of the present disclosure is shown. In some embodiments, the method 500 includes: block 502, the UE transmits a first signal and / or a second signal from a network device and / or transmits a first signal and / or a second signal to a network device; or block 504, the UE performs positioning measurements based on the first signal and / or the second signal; or block 506, the UE reports auxiliary information to the network device. This can provide system positioning, reduce network signaling, reduce power consumption, provide good communication performance and / or provide high reliability.

[0092] Figure 6 A wireless communication method 600 performed by a network device according to an embodiment of the present disclosure is shown. In some embodiments, the method 600 includes: block 602, the network device transmits a first signal and / or a second signal from a UE and / or transmits a first signal and / or a second signal to a UE; block 604, the network device performs positioning measurement based on the first signal and / or the second signal; or block 606, the network device detects auxiliary information reported by the UE. This can provide system positioning, reduce network signaling, reduce power consumption, provide good communication performance and / or provide high reliability.

[0093] The examples given in the present disclosure may be applied to an IoT device or NB-IoT UE in an NTN system, but the method is not limited to the NTN system, nor is it limited to an IoT device or NB-IoT UE. The examples given in the present disclosure may be applied to an NR system, an LTE system, or an NB-IoT system. In addition, some examples in the present disclosure may be applied to an NB-IoT system, in which the Physical Downlink Control Channel (PDCCH) is equivalent to the NB-PDCCH (NPDCCH), and the Physical Downlink Shared Channel (PDSCH) is equivalent to the NB-PDSCH (NPDSCH).

[0094] Example

[0095] In the present disclosure, some examples propose a method for NTN system positioning using DL-TDOA method. Key aspects of the example may include: 1) TRP is associated with satellite, 2) UE reports RSTD2 instead of RSTD1, 3) method for calculating RSTD2, and / or 4) UE reports timestamp according to uplink synchronization reference point timing.

[0096] In the NTN system, if Figure 7 As shown, one TRP can be one satellite, and multiple TRPs can be multiple satellites. Optionally, multiple TRPs can also be implemented by one satellite, and the time instance (or time period or time interval) of the satellite can be regarded as one TRP. Therefore, different time instances of the satellite can be regarded as multiple TRPs, such as Figure 8 As shown below, the proposed exemplary method can be applied to one satellite case or multiple satellite cases.

[0097] Following the traditional DL-TDOA principle, the UE can measure the arrival time delay difference between two TRPs. In the NTN system where transparent load is deployed, the satellite is used to forward the signal from the base station on the ground to the UE, or from the UE to the base station. The signal then propagates along two links, namely the feeder link and the service link. The feeder link connects the base station / uplink synchronization reference point (according to Section 4.1 of TS 38.211V17.1.0) with the satellite, and the service link connects the satellite and the UE.

[0098] like Fig. 9A As shown in FIG. 1 , when the LMF is installed on the ground, the base station sends a PRS to the satellite, and then the satellite forwards the PRS to the UE. In this case, when the UE receives the PRS from the satellite or TRP1, the PRS experiences a delay including a feeder link delay (i.e., Fd_delay1) and a service link delay (i.e., SL_delay1). When the UE receives another PRS from TRP2, the PRS experiences Fd_delay2 and SL_delay2. Therefore, Fig.10 As shown, when the UE calculates the arrival time delay difference, the result is RSTD1 = Fd_delay2-Fd_delay1+SL_delay2-SL_delay1. However, since the TRP is on the satellite side, RSTD only calculates the TDOA between the TRP and the UE. For this reason, the UE only calculates RSTD2 = SL_delay2-SL_delay1. Therefore, the UE reports RSTD2 to the LMF and calculates RSTD2. The UE can perform the following process.

[0099] In one step, when the UE receives a first PRS from TRP1, the UE uses the received first PRS to determine a first subframe or time slot. Then, when the UE receives a second PRS from TRP2, the UE uses the received second PRS to determine a second subframe or time slot. The value of RSTD1 is calculated by the time difference between the start of the first subframe and the start of the second subframe.

[0100] In another step, the UE determines the value of Fd_delay2-Fd_delay1 by determining the values ​​of Fd_delay2 and Fd_delay1 respectively, and then the UE calculates the value of Fd_delay2-Fd_delay1. Fd_delay1 is the feeder link delay of TRP1. In order to calculate Fe_delay1, the UE may calculate Fd_delay1 using one or more first parameters and / or a first reference time instance provided by the network (e.g., a core network or a base station) or the LMF. The first reference time instance may be provided by the LMF or the network. In some examples, the first reference time instance is based on an uplink synchronization reference point (or simply referred to as USRP or RP), which is defined in Section 4.1 of TS38.211 V17.1.0. Optionally, the first reference time instance is determined by the UE, wherein the first reference time instance corresponds to a time instance when the UE receives a first PRS from TRP1. In order to calculate Fe_delay2, the UE may calculate Fd_delay2 using one or more second parameters and / or a second reference time instance provided by the network or the LMF. The second reference time instance may be provided by the LMF or the network. In some examples, the second reference time instance is based on an uplink synchronization reference point. Optionally, the second reference time instance is determined by the UE, wherein the second reference time instance corresponds to a time instance when the UE receives the second PRS from TRP2. In some examples, one or more first parameters are the same as one or more second parameters. For example, when TRP1 and TRP2 are both from the same satellite, one or more first parameters are the same as one or more second parameters.

[0101] In the third step, the RSTD2 calculated by the UE is based on RSTD1 minus the difference between Fd_delay2 and Fd_delay1, that is, RSTD2=RSTD1-(Fd_delay2-Fd_delay1). The UE may report RSTD2 to the LMF.

[0102] Fig. 9B The operating mechanism and Fig. 9A The operation mechanism is similar, so this disclosure will not repeat the above steps and content. The difference is that Fig. 9BIt is shown that in some examples, Fd_delay1 is the feeder link delay from USRP1 to TRP1, and Fd_delay2 is the feeder link delay from USRP2 to TRP2.

[0103] also, Fig. 9C The operating mechanism and Fig. 9A The operation mechanism is similar, so this disclosure will not repeat the above steps and content. The difference is that Fig. 9C It is shown that in some examples, the UE transmits a first DRS / URS to a satellite or from TRP1, and the UE transmits a second DRS / URS to a satellite or from TRP1. In addition, Fig.9D The operating mechanism is similar to Fig. 9B Therefore, the present disclosure will not repeat the above steps and contents. The difference is that, Fig. 9C It is shown that in some examples, the UE transmits a first DRS / URS to a satellite or from TRP1, and the UE transmits a second DRS / URS to a satellite or from TRP1.

[0104] Optionally, the UE may also report a timestamp to the LMF, which refers to the time instance when the UE calculates RSTD2. The timestamp may be a Coordinated Universal Time (UTC) time or may be a System Frame Number (SFN) index and / or a time slot index. When the timestamp is a SFN index and / or a time slot index, the SFN index and / or the time slot index is based on the timing at the uplink synchronization reference point.

[0105] In some examples, when the UE receives DRS / URS from the reference TRP (in Fig.11 In the example in this document, the reference TRP is TRP1), the UE determines the subframe in which the UE receives DRS / URS as the reference subframe (in the example in this document, the reference subframe is subframe #1). Then, the UE receives another DRS / URS from another TRP (in the example in this document, TRP2), and the UE determines the subframe in which the UE receives DRS / URS (in the example in this document, subframe #3). The UE determines the boundary of subframe 3 and then derives the subframe index corresponding to the reference subframe index (i.e., as Fig.11 The subframe boundary corresponding to the subframe #1 shown in FIG. Fig.11 As shown, the subframe boundary is used to calculate the RSTD between the reference TRP (TRP1) and TRP2. Fig.12In some of the examples shown, the reference subframe also includes an SFN index, that is, the reference subframe is a subframe index in the SFN index in which the UE receives DRS / URS from the reference TRP (subframe #1 in SFN#n in the example herein). Then, the UE receives another DRS / URS from another TRP (TRP2 in the example herein), and the UE determines the subframe in which the UE receives DRS / URS (subframe #3 in SFN#n+1 in the example herein), the UE can determine the boundary of subframe 3, and then derive the subframe index corresponding to the reference subframe index (that is, as shown in FIG. Fig.12 The subframe boundary corresponds to the subframe #1 in SFN #n shown. Fig.12 RSTD is shown in .

[0106] In some examples, such as Fig.13 As shown, the UE sends an uplink reference signal (e.g., SRS) to the network at time t0_3. In addition, the UE also reports auxiliary information to the network and / or LMF, and the network device can use the auxiliary information to obtain at least two pieces of information, namely, first information about a first TA, which corresponds to a service link, and second information about a second TA, which corresponds to a common TA. The first TA is applied to SRS transmission for the purpose of compensating for the round-trip time RTT between the UE and the satellite (or TRP). The second TA is also applied to SRS transmission for the purpose of compensating for the RTT between the satellite (or TRP) and the uplink synchronization reference point. The auxiliary information may include the first information and the second information, respectively. Or the auxiliary information may include the first information / the second information and an offset value, wherein the second information / the first information may be derived based on the first information / the second information and the offset value.

[0107] At the gNB side, when receiving the SRS, the subframe or time slot boundary of the received SRS may be derived, and a second offset between the derived subframe boundary and the nearest downlink subframe boundary may be estimated. The gNB may report the second offset to the LMF. Optionally, the second offset refers to a TA error that may be caused by both the first TA and the second TA. Therefore, if Fig.14 As shown, the gNB can report the first TA error to the LMF, and the first TA represents the service link RTT and can be used to estimate the positioning. In this case, since the gNB knows the USRP position and the satellite position, the precise TA value of the second TA can be calculated, and then the gNB can calculate the second TA error by comparing the precise TA value of the second TA with the second TA reported by the UE. Then, the gNB can further derive the first TA error by subtracting the second TA error from the second offset. It should be noted that the calculation of the above-mentioned first TA error can also be performed by the LMF. In this case, the gNB can report the USRP position and the satellite position to the LMF, and as shown Fig.15As shown, the auxiliary information from the UE can be reported directly to the LMF.

[0108] Fig.16 A wireless communication device 1600 according to an embodiment of the present disclosure is shown. The wireless communication device 1600 includes an executor 1601, which is configured to perform at least one of the following: transmitting a first signal and / or a second signal from and / or to a network device; performing a positioning measurement based on the first signal and / or the second signal; or reporting auxiliary information to the network device. This can provide system positioning, reduce network signaling, reduce power consumption, provide good communication performance, and / or provide high reliability.

[0109] Fig.17 A wireless communication device 1700 according to an embodiment of the present disclosure is shown. The wireless communication device 1700 includes an executor 1701, which is configured to perform at least one of the following: transmitting a first signal and / or a second signal from and / or to a UE; performing positioning measurements based on the first signal and / or the second signal; or detecting auxiliary information reported by a UE. This can provide system positioning, reduce network signaling, reduce power consumption, provide good communication performance, and / or provide high reliability.

[0110] In some embodiments, the network device includes a base station, a core network, a TRP, a satellite, or an LMF. In some embodiments, the first signal is configured to be associated with a first TRP, and the second signal is configured to be associated with a second TRP. In some embodiments, the first TRP is associated with a first satellite, and the second TRP is associated with the second satellite or associated with the first satellite. In some embodiments, the first TRP is associated with a first satellite corresponding to a first time, and the second TRP is associated with a first satellite corresponding to a second time, wherein the first time and / or the second time include a time instance, a time period, or a time interval. In some embodiments, the first signal includes a first DRS and / or a first URS, and / or the second signal includes a second DRS or a second URS.

[0111] In some embodiments, the DRS includes: a PRS, an SSB, or a CSI-RS; the URS includes an SRS, a PRACH, a PUCCH, or a PUSCH. In some embodiments, the UE transmitting the first signal and / or the second signal from the network device and / or to the network device includes: when the UE receives the DRS from the reference TRP, the UE determines a reference subframe or time slot, which is a subframe or time slot in which the UE receives the DRS from the reference TRP. In some embodiments, the UE determines a first subframe index or time slot index, wherein the first subframe index or time slot index is an index of the reference subframe or time slot. In some embodiments, the reference TRP is the first TRP. In some embodiments, the UE transmitting the first signal and / or the second signal from the network device and / or to the network device includes: when the UE receives the second DRS from the second TRP, the UE determines the second subframe or time slot in which the UE receives the second DRS.

[0112] In some embodiments, performing positioning measurements based on the first signal and / or the second signal includes: the UE determines a first boundary and a second boundary, wherein the first boundary is a boundary of a reference subframe or time slot, and the second boundary is a boundary of a subframe or time slot corresponding to the first subframe index or time slot index. In some embodiments, the second boundary is determined according to the boundary of the second subframe or time slot. In some embodiments, the positioning measurement also includes calculating the time difference between the first boundary and the second boundary. In some embodiments, the network device uses auxiliary information to obtain first information of a first TA corresponding to a service link, second information of a second TA corresponding to a common TA, and / or an offset value. In some embodiments, the first TA and / or the second TA include one or more TA values, wherein the one or more TA values ​​correspond to TAs applied at different time instances. In some embodiments, the first TA is applied to a first URS transmission to compensate for the RTT between the UE and a satellite or TRP; the second TA is applied to the first URS transmission to compensate for the RTT between the satellite or TRP and an uplink synchronization reference point.

[0113] In some embodiments, the first information is derived based on the second information and the offset value; and / or the second information is derived based on the first information and the offset value. In some embodiments, the network device derives a subframe or time slot boundary in which the network device receives the first URS; and / or the network device estimates a second offset between the derived subframe or time slot boundary and the closest downlink subframe or time slot boundary closest to the derived subframe or time slot boundary. In some embodiments, the second offset is reported by the base station to the location management function LMF. In some embodiments, the second offset refers to a TA error caused by the first TA and / or the second TA. In some embodiments, the TA error is the time difference between the boundary of the uplink subframe and the boundary of the downlink subframe; and / or the downlink subframe overlaps with the uplink subframe or the downlink subframe overlaps with the uplink subframe with a delay.

[0114] In some embodiments, the first TA error is reported by the base station to the LMF or the first TA error is calculated by the base station or the LMF, the first TA represents the service link RTT and / or the first TA error is used to estimate the positioning. In some embodiments, the base station or the LMF uses the uplink synchronization reference point USRP position and the satellite position to calculate the precise TA value of the second TA; and / or the base station or the LMF calculates the second TA error by comparing the precise TA value of the second TA with the second TA reported by the UE. In some embodiments, the base station derives the first TA error by subtracting the second TA error from the second offset. In some embodiments, the USRP position and the satellite position are reported by the base station to the LMF.

[0115] The beneficial effects of some embodiments are as follows: 1. Provide system positioning; 2. Reduce network signaling; 3. Reduce power consumption; 4. Provide good communication performance; 5. Provide high reliability; 6. Some embodiments of the present disclosure are used by 5G-NR chipset suppliers, V2X communication system development suppliers, automobile manufacturers including cars, trains, trucks, buses, bicycles, motorcycles, helmets, etc., drones (unmanned aerial vehicles), smart phone manufacturers, communication equipment for public safety purposes, such as games, conferences / seminars, and AR / VR equipment manufacturers for educational purposes. Some embodiments of the present disclosure are combinations of "techniques / methods" that can be adopted in 3GPP specifications to create final products. Some embodiments of the present disclosure can be used in 5G NR authorized and unauthorized or shared spectrum communications. Some embodiments of the present disclosure propose technical mechanisms.

[0116] Fig.18 7 is a block diagram of an exemplary wireless communication system 700 according to an embodiment of the present disclosure. The embodiments described herein may be implemented in a system using any appropriately configured hardware and / or software. Fig.18 A system 700 is shown, which includes at least a radio frequency (RF) circuit 710, a baseband circuit 720, an application circuit 730, a memory / storage medium 740, a display 750, a camera 760, a sensor 770, and an input / output (I / O) interface 780 coupled to each other as shown. The application circuit 730 may include the following circuits, such as but not limited to, one or more single-core or multi-core processors. The processor may include any combination of a general-purpose processor and a special-purpose processor (e.g., a graphics processor, an application processor). The processor may be coupled to the memory / storage medium and configured to execute instructions stored in the memory / storage medium so that various applications and / or operating systems run on the system.

[0117] The baseband circuit 720 may include the following circuits, such as, but not limited to, one or more single-core or multi-core processors. The processor may include a baseband processor. The baseband circuit may handle various radio control functions to communicate with one or more radio networks via RF circuits. The radio control functions may include, but are not limited to, signal modulation, encoding, decoding, radio frequency shifting, etc. In some embodiments, the baseband circuit may provide communications compatible with one or more radio technologies. For example, in some embodiments, the baseband circuit may support communications with an Evolved Universal Terrestrial Radio Access Network (EUTRAN) and / or other wireless metropolitan area networks (WMAN), wireless local area networks (WLAN), and wireless personal area networks (WPAN). An embodiment in which the baseband circuit is configured to support wireless communications of more than one wireless protocol may be referred to as a multi-mode baseband circuit.

[0118] In various embodiments, the baseband circuit 720 may include circuits that operate using signals that are not strictly baseband frequencies. For example, in some embodiments, the baseband circuit may include circuits that operate using intermediate frequency (between baseband frequency and radio frequency) signals. The RF circuit 710 may use modulated electromagnetic radiation through a non-solid medium to achieve communication with a wireless network. In various embodiments, the RF circuit may include switches, filters, amplifiers, etc. to facilitate communication with a wireless network. In various embodiments, the RF circuit 710 may include circuits that operate using signals that are not strictly radio frequency. For example, in some embodiments, the RF circuit may include circuits that operate using intermediate frequency (between baseband frequency and radio frequency) signals.

[0119] In various embodiments, the transmitter circuit, control circuit, or receiver circuit discussed above with respect to a user equipment, eNB, or gNB may be implemented in whole or in part in one or more of the RF circuit, baseband circuit, and / or application circuit. As used herein, "circuit" may refer to an ASIC, an electronic circuit, a processor (shared, dedicated, or group) and / or a memory (shared, dedicated, or group) that executes one or more software or firmware programs, a combinational logic circuit, and / or other suitable hardware components that provide the functionality, or a part of or include these circuits. In some embodiments, an electronic device circuit may be implemented in one or more software or firmware modules, or the functionality associated with the circuit may be implemented by one or more software or firmware modules. In some embodiments, some or all of the components of the baseband circuit, application circuit, and / or memory / storage medium may be implemented together on a system on a chip (System On a Chip, SOC). The memory / storage medium 740 may be used to load and store data and / or instructions of, for example, a system. The memory / storage medium of one embodiment may include any combination of suitable volatile memory (eg, Dynamic Random Access Memory (DRAM)) and / or non-volatile memory (eg, flash memory).

[0120] In various embodiments, the I / O interface 780 may include one or more user interfaces and / or peripheral component interfaces, the user interface is designed to implement user interaction with the system, and the peripheral component interface is designed to implement peripheral component interaction with the system. The user interface may include, but is not limited to, a physical keyboard or keypad, a touchpad, a speaker, a microphone, etc. The peripheral component interface may include, but is not limited to, a non-volatile memory port, a Universal Serial Bus (USB) port, an audio jack, and a power interface. In various embodiments, the sensor 770 may include one or more sensing devices to determine environmental conditions and / or location information related to the system. In some embodiments, the sensor may include, but is not limited to, a gyroscope sensor, an accelerometer, a proximity sensor, an ambient light sensor, and a positioning unit. The positioning unit may also be part of a baseband circuit and / or an RF circuit, or interact with a baseband circuit and / or an RF circuit to communicate with components of a positioning network (e.g., a global positioning system (GPS) satellite).

[0121] In various embodiments, the display 750 may include displays such as liquid crystal displays and touch screen displays. In various embodiments, the system 700 may be a mobile computing device, such as, but not limited to, a laptop computing device, a tablet computing device, a netbook, an ultrabook, a smart phone, AR / VR glasses, etc. In various embodiments, the system may have more or fewer components and / or different architectures. Where appropriate, the methods described herein may be implemented as computer programs. The computer program may be stored on a storage medium, such as a non-transitory storage medium.

[0122] Those of ordinary skill in the art will appreciate that the various units, algorithms and steps described and disclosed in the embodiments of the present disclosure can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the application conditions and design requirements of the technical solution. Those of ordinary skill in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present disclosure. Those of ordinary skill in the art will understand that he / she can refer to the working process of the system, device and unit in the above-mentioned embodiments, because the working process of the above-mentioned system, device and unit is basically the same. For ease of description and simplification, these working processes will not be described in detail.

[0123] It should be understood that the systems, devices and methods disclosed in the embodiments of the present disclosure may be implemented in other ways. The device embodiments described above are merely schematic. The division of the units is only a logical function division, and there may be other division methods during implementation. Multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Another point is that the coupling or direct coupling or communication connection between each other shown or discussed may be an indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.

[0124] The units described as separate components may or may not be physically separated, and the units shown may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be used according to the purpose of the embodiment. In addition, the functional units in each embodiment may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one processing unit.

[0125] If the functions are implemented in the form of software functional units and used and sold as products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present disclosure, or the part that contributes to the prior art or the part of the technical solution, can be implemented in the form of a software product, which is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps disclosed in each embodiment of the present disclosure. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), floppy disk and other media that can store program codes.

[0126] While the present disclosure has been described in connection with what is considered to be the most practical and preferred embodiments, it is to be understood that the disclosure is not limited to the disclosed embodiments but is intended to cover various arrangements made without departing from the broadest interpretation of the appended claims.

Claims

1. A wireless communication method for a user equipment UE, comprising at least one of the following: The UE transmits the first signal and / or the second signal from the network device, and / or transmits the first signal and / or the second signal to the network device; The UE performs positioning measurement based on the first signal and / or the second signal; or The UE reports auxiliary information to the network device.

2. The method according to claim 1, wherein: The network equipment includes: base station, core network, transmission receiving point TRP, satellite or location management function LMF.

3. The method according to claim 1 or 2, wherein: The first signal is configured to be associated with a first transmission reception point TRP, and the second signal is configured to be associated with a second TRP.

4. The method according to claim 3, wherein: The first TRP is associated with a first satellite, the second TRP is associated with a second satellite, or the second TRP is associated with the first satellite.

5. The method according to claim 3 or 4, wherein: The first TRP is associated with a first satellite corresponding to a first time, and the second TRP is associated with the first satellite corresponding to a second time, wherein the first time and / or the second time comprises: a time instance, a time period, or a time interval.

6. The method according to any one of claims 3 to 5, wherein: The first signal includes a first downlink reference signal DRS and / or a first uplink reference signal URS, and / or the second signal includes a second DRS or a second URS.

7. The method according to claim 6, wherein: DRS includes: positioning reference signal PRS, synchronization signal block SSB or channel state information reference signal CSI-RS; and / or URS includes sounding reference signal SRS, physical random access channel PRACH, physical uplink control channel PUCCH or physical uplink shared channel PUSCH.

8. The method according to any one of claims 1 to 6, wherein: The UE transmitting the first signal and / or the second signal from the network device, and / or transmitting the first signal and / or the second signal to the network device includes: When the UE receives a downlink reference signal DRS from a reference transmission reception point TRP, the UE determines a reference subframe or time slot, where the reference subframe or time slot is the subframe or time slot in which the UE receives the DRS from the reference TRP.

9. The method according to claim 8, wherein: The UE determines a first subframe index or time slot index, where the first subframe index or time slot index is the index of the reference subframe or time slot; and / or the reference TRP is the first TRP.

10. The method according to any one of claims 7 to 9, wherein: The UE transmitting the first signal and / or the second signal from the network device, and / or transmitting the first signal and / or the second signal to the network device includes: When the UE receives a second DRS from the second TRP, the UE determines a second subframe or time slot in which the UE receives the second DRS; and / or The UE determines a first boundary and a second boundary, wherein the first boundary is a boundary of the reference subframe or time slot, and the second boundary is a boundary of a subframe or time slot corresponding to the first subframe index or time slot index.

11. The method according to claim 10, wherein: The second boundary is determined according to a boundary of the second subframe or time slot; and / or the positioning measurement further comprises calculating a time difference between the first boundary and the second boundary.

12. The method according to any one of claims 1 to 11, wherein: The network device obtains first information of a first timing advance TA corresponding to a service link, second information of a second TA corresponding to a common TA, and / or an offset value using the auxiliary information.

13. The method according to claim 12, wherein: The first TA and / or the second TA comprises one or more TA values, the one or more TA values ​​corresponding to TAs applied at different time instances; and / or The first TA is applied to the transmission of a first uplink reference signal URS to compensate for the round trip time RTT between the UE and a satellite or TRP; the second TA is applied to the first URS transmission to compensate for the RTT between the satellite or TRP and an uplink synchronization reference point; and / or The first information is derived based on the second information and the offset value; and / or the second information is derived based on the first information and the offset value.

14. The method according to claim 12 or 13, wherein: The second offset is reported by the base station to the location management function LMF; and / or the second offset refers to a TA error caused by the first TA and / or the second TA.

15. The method according to claim 14, wherein: The TA error is the time difference between the boundary of the uplink subframe and the boundary of the downlink subframe; and / or the downlink subframe overlaps with the uplink subframe or the downlink subframe overlaps with the uplink subframe with a delay; A first TA error is reported by the base station to the LMF, or the first TA error is calculated by the base station or the LMF, the first TA represents a service link RTT, and / or the first TA error is used to estimate positioning; and / or The base station or the LMF calculates the precise TA value of the second TA using the uplink synchronization reference point USRP position and the satellite position; And / or the base station or the LMF calculates a second TA error by comparing the precise TA value of the second TA with the second TA reported by the UE.

16. The method according to claim 15, wherein: The first TA error is derived by the base station by subtracting the second TA error from the second offset; and / or the USRP position and the satellite position are reported by the base station to the LMF.

17. A wireless communication method for a network device, comprising at least one of the following: The network device transmits the first signal and / or the second signal from the user equipment UE, and / or transmits the first signal and / or the second signal to the UE; The network device performs positioning measurements based on the first signal and / or the second signal; or The network device detects the auxiliary information reported by the UE.

18. A user equipment UE, comprising: Memory; Transceiver; as well as a processor coupled to the memory and the transceiver; The processor is configured to perform at least one of the following: Transmitting the first signal and / or the second signal from the network device and / or transmitting the first signal and / or the second signal to the network device; performing positioning measurements based on the first signal and / or the second signal; or Auxiliary information is reported to the network device.

19. A wireless communication device, comprising: An executor, wherein the executor is configured to perform at least one of the following: Transmitting the first signal and / or the second signal from the network device and / or transmitting the first signal and / or the second signal to the network device; performing positioning measurements based on the first signal and / or the second signal; or Auxiliary information is reported to the network device.

20. A network device comprising: Memory; Transceiver; as well as a processor coupled to the memory and the transceiver; The processor is configured to perform at least one of the following: Transmitting the first signal and / or the second signal from a user equipment UE, and / or transmitting the first signal and / or the second signal to the UE; performing positioning measurements based on the first signal and / or the second signal; or The auxiliary information reported by the UE is detected.

21. A wireless communication device, comprising: An executor, wherein the executor is configured to perform at least one of the following: Transmitting the first signal and / or the second signal from a user equipment UE, and / or transmitting the first signal and / or the second signal to the UE; performing positioning measurements based on the first signal and / or the second signal; or The auxiliary information reported by the UE is detected.

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