Wireless communication method and communication device

Abstract

Provided are a wireless communication method and a communication device. The method comprises: a first communication device sends first information, wherein a difference between the moment when the first communication device receives a first positioning signal and the moment when the first communication device sends a second positioning signal is a first time difference, the TA corresponding to the time period when the first positioning signal is transmitted is a first TA, the TA corresponding to the time period when the second positioning signal is transmitted is a second TA, the first information is related to the first time difference, and the first information is further related to the first TA and / or the second TA. The first information not only considers the first time difference, but also considers the first TA and / or the second TA. Therefore, even if the values of the first TA and the second TA are different, on the basis of the first information, the problem of inaccurate positioning caused by different values of the first TA and the second TA can also be corrected.

Description

Wireless communication method and communication device

[0001] This application claims priority to PCT patent application number PCT / CN2023 / 129811 filed on November 3, 2023, entitled “Wireless Communication Method and Communication Device,” the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of communication technology, and more particularly, to a wireless communication method and a communication device. Background Art

[0003] In communication systems, terminal devices can be positioned based on round trip time (RTT). In non-terrestrial networks (NTN) systems, RTT can be determined between satellites and terminal devices by transmitting uplink (UL) positioning signals and downlink (DL) positioning signals. Based on the RTT, the communication device can determine the distance between the terminal device and the satellite. Furthermore, based on this distance, the communication device can locate the terminal device. RTT positioning in both terrestrial networks (TN) and NTN systems has room for improvement.

[0004] Summary of the Invention

[0005] The present application provides a wireless communication method and a communication device. The following introduces various aspects involved in the present application.

[0006] In a first aspect, a wireless communication method is provided, the method including: a first communication device sending first information; wherein, the difference between the time when the first communication device receives the first positioning signal and the time when it sends the second positioning signal is a first time difference, the time advance (TA) corresponding to the time period for transmitting the first positioning signal is a first TA, the TA corresponding to the time period for transmitting the second positioning signal is a second TA, the first information is related to the first time difference, and the first information is also related to the first TA and / or the second TA.

[0007] According to a second aspect, a wireless communication method is provided, which includes: a second communication device receives first information sent by a first communication device; wherein, the difference between the moment when the first communication device receives the first positioning signal and the moment when it sends the second positioning signal is a first time difference, the TA corresponding to the time period for transmitting the first positioning signal is a first TA, and the TA corresponding to the time period for transmitting the second positioning signal is a second TA, the first information is related to the first time difference, and the first information is also related to the first TA and / or the second TA.

[0008] According to a third aspect, a communication device is provided. The communication device is a first communication device, comprising: a sending unit configured to send first information; wherein the difference between the time when the first communication device receives the first positioning signal and the time when the first communication device sends the second positioning signal is a first time difference; the time interval corresponding to the time period for transmitting the first positioning signal is a first time interval; the time interval corresponding to the time period for transmitting the second positioning signal is a second time interval; the first information is related to the first time difference; and the first information is also related to the first time interval and / or the second time interval.

[0009] In a fourth aspect, a communication device is provided. The communication device is a second communication device, comprising: a receiving unit, configured to receive first information sent by a first communication device; wherein the difference between the time when the first communication device receives the first positioning signal and the time when the first communication device sends the second positioning signal is a first time difference, the time interval corresponding to the time period for transmitting the first positioning signal is a first TA, and the time interval corresponding to the time period for transmitting the second positioning signal is a second TA, and the first information is related to the first time difference, and the first information is also related to the first TA and / or the second TA.

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

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

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

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

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

[0015] The inventors of this application have discovered that in some scenarios, the first TA and the second TA may differ, which can lead to RTT positioning anomalies. To address this, this application proposes a technical solution in which the first communication device needs to report first information. This first information not only takes into account the first time difference, but also the first TA and / or the second TA. Therefore, even if the values ​​of the first TA and the second TA differ, the problem of inaccurate positioning caused by the difference in the values ​​of the first TA and the second TA can be corrected to a certain extent based on the first information. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] FIG. 2 is an example diagram of a RTT positioning method.

[0018] FIG3 is an example diagram of a multi-RTT positioning scenario.

[0019] FIG4 is a timing diagram illustrating an example of receiving a first positioning signal and sending a second positioning signal.

[0020] FIG5 is another example diagram of a timing sequence for receiving a first positioning signal and sending a second positioning signal.

[0021] FIG6 is another example diagram of a timing sequence for receiving a first positioning signal and sending a second positioning signal.

[0022] FIG7 is a schematic flowchart of a wireless communication method provided in an embodiment of the present application.

[0023] FIG8 is another example diagram of a timing sequence for receiving a first positioning signal and sending a second positioning signal.

[0024] FIG9 is another example diagram of a timing sequence for receiving a first positioning signal and sending a second positioning signal.

[0025] FIG10 is another example diagram of a timing sequence for receiving a first positioning signal and sending a second positioning signal.

[0026] FIG11 is a schematic structural diagram of a communication device provided in an embodiment of the present application.

[0027] FIG12 is a schematic structural diagram of another communication device provided in an embodiment of the present application.

[0028] FIG13 is a schematic structural diagram of a device for communication provided in an embodiment of the present application. DETAILED DESCRIPTION

[0029] The technical solution in this application will be described below with reference to the accompanying drawings.

[0030] Communication System

[0031] FIG1 illustrates a wireless communication system 100 used in an embodiment of the present application. The wireless communication system 100 may include communication devices. The communication devices may include a network device 110 and a terminal device 120. The network device 110 may be a device that communicates with the terminal device 120.

[0032] FIG1 exemplarily shows a network device and two terminals. Optionally, the wireless communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within its coverage area, which is not limited in the embodiments of the present application.

[0033] Optionally, the wireless communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiment of the present application.

[0034] It should be understood that the technical solutions of the embodiments of the present application can be applied to various communication systems, such as: fifth generation (5G) system or new radio (NR), long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD), etc. The technical solutions provided in this application can also be applied to future communication systems, such as the sixth generation mobile communication system, satellite communication system, etc.

[0035] The terminal device in the embodiments of the present application may also be referred to as user equipment (UE), access terminal, user unit, user station, mobile station, mobile station (MS), mobile terminal (MT), remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent or user device. The terminal device in the embodiments of the present application may refer to a device that provides voice and / or data connectivity to a user and can be used to connect people, objects and machines, such as a handheld device with wireless connection function, a vehicle-mounted device, etc. The terminal device in the embodiments of the present application can be a mobile phone, a tablet computer, a laptop computer, a PDA, a mobile internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. Optionally, the UE can be used to act as a base station. For example, the UE can act as a scheduling entity that provides sidelink signals between UEs in vehicle-to-everything (V2X) or device-to-device (D2D). For example, a cellular phone and a car communicate with each other using sidelink signals. The cellular phone and smart home devices communicate without relaying the communication signal through a base station.

[0036] The network device in the embodiments of the present application may be a device for communicating with a terminal device. The network device may also include an access network device. The access network device may provide communication coverage for a specific geographical area and may communicate with the terminal device 120 located within the coverage area. The access network device may also be referred to as a radio access network device or a base station. The access network device in the embodiments of the present application may refer to a radio access network (RAN) node (or device) that connects the terminal device to a wireless network. Access network equipment can broadly cover various names as follows, or replace the following names, such as: NodeB, evolved NodeB (eNB), next generation NodeB (gNB), relay station, access point, transmitting and receiving point (TRP), transmitting point (TP), master eNB (MeNB), secondary eNB (SeNB), multi-standard radio (MSR) node, home base station, network controller, access node, wireless node, access point (AP), transmission node, transceiver node, baseband unit (BBU), remote radio unit (RRU), active antenna unit (AAU), remote radio head (RRH), central unit (CU), distributed unit (DU), positioning node, etc. The base station can be a macro base station, a micro base station, a relay node, a donor node, or the like, or a combination thereof. A base station may also refer to a communication module, modem, or chip used to be set in the aforementioned device or apparatus. A base station may also be a mobile switching center and a device that performs base station functions in D2D, V2X, and machine-to-machine (M2M) communications, a network-side device in a 6G network, or a device that performs base station functions in future communication systems. A base station may support networks with the same or different access technologies. The embodiments of this application do not limit the specific technology and specific device form used by the access network device.

[0037] Base stations can be fixed or mobile. For example, a helicopter or drone can be configured to act as a mobile base station, and one or more cells can move based on the location of the mobile base station. In other examples, a helicopter or drone can be configured to act as a device that communicates with another base station.

[0038] The communication equipment involved in a wireless communication system can include not only access network equipment and terminal equipment, but also core network elements. Core network elements can be implemented by devices, that is, core network elements are core network devices. It is understood that core network devices can also be a type of network equipment.

[0039] The core network elements in the embodiments of the present application may include network elements that process and forward user signaling and data. For example, the core network equipment may include core network access and mobility management function (AMF), session management function (SMF), user plane gateway, location management function (LMF) and other core network equipment. Among them, the user plane gateway may be a server with functions such as mobility management, routing, and forwarding of user plane data, generally located on the network side, such as a serving gateway (SGW) or a packet data network gateway (PGW) or a user plane network element function entity (UPF). Of course, the core network may also include other network elements, which are not listed here one by one.

[0040] In some deployments, the network device in the embodiments of the present application may refer to a CU or a DU, or the network device may include a CU and a DU. The gNB may also include an AAU.

[0041] The network equipment and terminal devices can be deployed on land, including indoors or outdoors, handheld or vehicle-mounted; they can also be deployed on water; they can also be deployed in the air on aircraft, balloons, and satellites. The embodiments of this application do not limit the scenarios in which the network equipment and terminal devices are located.

[0042] It should be understood that all or part of the functions of the communication device in this application can also be implemented through software functions running on hardware, or through virtualization functions instantiated on a platform (such as a cloud platform).

[0043] TA

[0044] In wireless communications, uplink transmission uses discrete Fourier transform spread OFDM (DFT-s-OFDM), which results in the entire frequency band of the same symbol being shared among multiple users. To ensure the orthogonality of the uplink signals of each user, the communication system requires that the time difference between the signals of each terminal device arriving at the serving cell base station does not exceed the time length corresponding to the cyclic prefix (CP). To this end, terminal devices farther away from the base station must send signals earlier than terminal devices closer to the base station. The base station can indicate the amount of time required for advance transmission. Alternatively, the terminal device can adjust the amount of time required for advance transmission based on measurements.

[0045] NTN

[0046] NTN can provide communication services to users in a non-terrestrial manner. That is, it can communicate with terminal devices through non-terrestrial network equipment such as satellites (SAT) and UAS platforms.

[0047] Terrestrial network communications are difficult to deploy in locations like oceans, mountains, and deserts. Furthermore, due to the cost of deploying and operating communications equipment, terrestrial communications typically don't cover sparsely populated areas. NTN offers many advantages over terrestrial networks. First, NTN networks are not restricted by geographic location. In theory, satellites orbit the Earth, allowing satellite coverage to reach every corner of the globe. Furthermore, non-terrestrial network equipment can cover areas far larger than those covered by terrestrial equipment. This means that NTN cells can cover a much wider area.

[0048] Non-terrestrial network equipment may move relative to the Earth, so in an NTN, cells may move across the Earth's surface. This phenomenon can make it difficult for network equipment to reliably determine the location of a terminal device, or even the country to which it belongs, making it difficult for the NTN to support regulatory services. Therefore, relying solely on global navigation satellite system (GNSS) reports from terminal devices is unreliable, and combining GNSS reports with network-based solutions can improve reliability. Therefore, network operators should cross-check the terminal device's location in addition to the terminal's reported GNSS position based on satellite navigation positioning to meet potential regulatory requirements.

[0049] Positioning technology

[0050] As communication technologies mature, some communication systems (such as 5G systems) can implement an increasing number of communication algorithms. These algorithms can include high-speed information transmission and positioning technologies. For example, the NTN system described above can achieve terminal device positioning not only through GNSS but also through communication algorithms to meet the needs of the NTN system.

[0051] Some wireless communication systems may include a server. The location coordinates of a terminal device may be calculated in the server. Such a server may also be called a positioning server.

[0052] The positioning server may be a network device with a positioning function provided by an operator. The network device with a positioning function may be a core network device or a cloud server. For example, the positioning server involved in the embodiment of the present application may include one or more of a location management function (LMF), a location management component (LMC), and a local location management function (LLMF) located in the network device, and the embodiment of the present application is not limited to this.

[0053] Among positioning technologies, RTT positioning technology is given priority due to its high accuracy and its independence from timing synchronization between network devices and terminal devices. The following describes RTT positioning technology.

[0054] RTT positioning

[0055] In a communication system, RTT positioning can determine the location of a responding device based on a positioning signal transmitted between the responding device and the initializing device. The positioning signal can be, for example, a reference signal or a pilot signal. In some embodiments, the positioning signal can also be referred to as an RTT measurement signal.

[0056] The responding device may be the device to be located. The initializing device may be a device used to locate the responding device. For example, the responding device may be a terminal device, and the initializing device may be a network device. The network device may include, for example, an access network device, a positioning server, and the like.

[0057] It should be noted that, for ease of description, the following embodiments are mostly described using a terminal device as the responding device, that is, the positioning of the terminal device is described. This application can also be applied to the positioning of other communication devices. For the positioning of other communication devices, the "terminal device" in the embodiments can be replaced with the communication device in question.

[0058] Fig. 2 is an example diagram of a method for RTT positioning, which may include steps S210 to S240.

[0059] Step S210: The initializing device sends an RTT measurement request to the responding device.

[0060] Step S220: The initializing device sends an RTT measurement signal 1 to the responding device.

[0061] The initializing device sends RTT measurement signal 1 at time t0. Due to transmission delay, the responding device receives RTT measurement signal 1 at time t1. That is, the time of arrival (TOA) of RTT measurement signal 1 is at time t1.

[0062] The RTT measurement signal 1 may include, for example, a DL positioning reference signal (PRS).

[0063] Step S230: The responding device sends an RTT measurement signal 2 to the initializing device.

[0064] The responding device sends RTT measurement signal 2 at time t2. Due to transmission delay, the initiating device receives RTT measurement signal 2 at time t3. That is, the arrival time of RTT measurement signal 2 is time t3.

[0065] The RTT measurement signal 2 may include, for example, a sounding reference signal (SRS).

[0066] When the initialization device is a network device, the difference between time t3 and time t0 (t3-t0) can be expressed as the time difference between the network device receiving and sending. The time difference between the network device receiving and sending (abbreviated as the receiving and sending time difference or receiving and sending difference) can be obtained by gNB. Rx-Tx For ease of description, the transmit and receive time difference of the initialized device in the following text is expressed by gNB. Rx-Tx Take this as an example.

[0067] In some embodiments, the gNB Rx-Tx Can meet: gNB Rx-Tx =T gNB-RX -T gNB-TX Among them, T gNB-RX It can be the transmission reference point (TRP) (or simply reference point) containing the reception timing of the uplink subframe #i of the SRS associated with the terminal device, defined by the first detected time path. gNB-TXIt can be the TRP transmission timing of the downlink subframe #j that is closest in time to the subframe #i received from the terminal device. A plurality of SRS resources can be used to determine the start of one subframe containing SRS.

[0068] Step S240, the responding device sends the difference between time t2 and time t1 (t2-t1) to the network device via RTT report. The network device includes a positioning server and / or an initialization device. In the case where the responding device is a terminal device, the difference between time t1 and time t2 can be expressed as the time difference between the terminal device receiving and sending. The time difference between the terminal device receiving and sending (abbreviated as the receiving and sending time difference or the receiving and sending difference) can be obtained, for example, by UE Tx-Rx or UE Rx-Tx For the convenience of description, the time difference between the sending and receiving of the responding device is expressed by UE. Tx-Rx express.

[0069] In some embodiments, the UE Tx-Rx Can meet: UE Tx-Rx =T UE-TX -T UE-RX UE Rx-Tx Can meet: UE Rx- Tx =T UE-RX -T UE-TX Understandably, UE Tx-Rx =-UE Rx-Tx That is, through UE Tx-Rx =-UE Rx-Tx , which can realize UE Tx-Rx With UE Rx-Tx The mutual replacement of T UE-RX It can be the timing of the downlink subframe #i received by the terminal device from the transmission point (TP), defined by the first detected time path. UE-TX It may be the terminal device transmission timing of the uplink subframe #j that is closest in time to the subframe #i received from the TP. Multiple DL PRSs or CSI-RSs may be used to determine this subframe.

[0070] Based on time t0, time t3 and the difference between time t2 and time t1, RTT can be calculated. For example, RTT can satisfy: RTT = t3 - t0 - (t2 - t1). Or, based on UE Tx-Rx and gNB Rx-Tx The RTT can be obtained. That is, the RTT can satisfy: RTT = gNB Rx-Tx -UE Tx-Rx .

[0071] For example, the terminal device may transmit an RTT report to the positioning server, where the RTT report may include the UE time measured for at least one network device. Tx-Rx The network device may transmit an RTT report to the positioning server, which may include the gNB Rx-Tx The positioning server can be based on RTT = gNB Rx-Tx -UE Tx-Rx Determine RTT. RTT report can also be called measurement report.

[0072] After obtaining the RTT, the one-way path delay can be obtained. For example, the one-way path delay R can satisfy (gNB Rx-Tx -UE Tx-Rx ) / 2. That is, gNB Rx-Tx and UE Tx-Rx The time difference between them is equal to twice the single path delay R.

[0073] The distance d between the initializing device and the responding device may satisfy: d = R × c, where c represents the speed of light.

[0074] Based on the distance between the initializing device and the responding device, the responding device can be located.

[0075] Exemplarily, RTT positioning technology can use multiple RTTs to achieve positioning. For example, in a communication system, multiple RTTs can be measured between a network device and a terminal device. Based on these multiple RTTs, the distance between the terminal device and each network device can be determined, thereby calculating the terminal device's location.

[0076] As shown in Figure 3, terminal device positioning can be achieved using three network devices: gNB1, gNB2, and gNB3. The distance between the terminal device and the corresponding gNB can be calculated based on the RTT1 between gNB1 and the terminal device, the RTT2 between gNB2 and the terminal device, and the RTT3 between gNB3 and the terminal device, thereby determining the terminal device's location.

[0077] It should be noted that FIG3 is only an example, and the positioning of the terminal device can be achieved through other numbers of network devices.

[0078] RTT Positioning in NTN

[0079] Taking satellites as an example of non-terrestrial network equipment, multi-RTT technology can be divided into the following two types: single-satellite multi-RTT and multi-satellite multi-RTT.

[0080] Single-satellite multi-RTT can use the movement of satellites (such as low Earth orbit (LEO) satellites) to perform multiple measurements at different times, thereby obtaining the distances between multiple reference points of the satellite and the terminal device, and then determining the location of the terminal device.

[0081] Multi-satellite multi-RTT is to measure based on multiple satellites at similar times to obtain the distance between multiple satellites and terminal devices, and then determine the location of the terminal device.

[0082] Unlike terrestrial communications, non-terrestrial network devices in NTN scenarios can move at high speeds. For example, LEOs can move at very high speeds (e.g., 7.6 km / s). Therefore, RTT positioning in NTN may cause positioning anomalies due to the high-speed movement of non-terrestrial network devices.

[0083] As can be seen above, to achieve RTT positioning, a terminal device needs to receive a first positioning signal and transmit a second positioning signal. In some cases, the time interval corresponding to the transmission period of the first positioning signal is called the first TA. The time interval corresponding to the transmission period of the second positioning signal is called the second TA. The inventors of this application have discovered that the values ​​of the first TA and the second TA may differ, which can lead to inaccurate positioning. For example, in an NTN system, due to the high-speed movement of satellites, the distance between the satellite and the terminal device is constantly changing. To maintain uplink synchronization, the TA changes rapidly, which may cause the above situation. When the terminal device reports the difference between transmission and reception, it needs to determine the reception time of the first positioning signal and the transmission time of the second positioning signal. Typically, the transmission time of the second positioning signal is determined based on the uplink timing of the first positioning signal. If the values ​​of the first TA and the second TA differ, positioning will be inaccurate. For example, in satellite communications, when the terminal device transmits the second positioning signal, it will further adjust the TA. Assuming that the TA calculated by the system (i.e., the first TA) is t1, the actual adjusted TA (i.e., the second TA) obtained after the terminal device adjusts the TA can be t1-Δt0.

[0084] Taking the scenario shown in Figure 4 as an example, the first positioning signal is transmitted in subframe i. TA#i is the TA corresponding to the time period during which the first positioning signal is transmitted (i.e., the first TA). The second positioning signal is transmitted in subframe 1. TA#1 is the TA corresponding to the time period during which the second positioning signal is transmitted (i.e., the second TA). The values ​​of TA#i and TA#1 may differ.

[0085] When the first TA and the second TA are different, positioning the terminal device through RTT may result in inaccurate positioning.

[0086] Continuing with reference to Figure 4, when the terminal device reports the transmit / receive time difference, the terminal device can report the actual index difference between the uplink subframe j and the downlink subframe i that receives the first positioning signal. Among them, the uplink subframe j is closest in time to the downlink subframe i that receives the first positioning signal from the TP. If the uplink subframe closest to subframe i is considered, that is, subframe j in Figure 4, then the TA at this time is not the TA that actually sends the second positioning signal. Therefore, the transmit / receive difference reported by the terminal device is inaccurate, and the calculated transmit / receive difference cannot reflect the actual transmit / receive time difference.

[0087] In some embodiments, downlink synchronization may contain errors. The magnitude of the error is related to the synchronization signal sampling interval. The propagation distance corresponding to the error time is much greater than the positioning accuracy requirement. Due to the limitations of the TA quantization interval, the distance corresponding to the accuracy of the TA quantization time is much greater than the positioning requirement. In other words, the downlink synchronization error and the limitations of the TA quantization interval will result in the resulting transmit and receive time difference generally not meeting positioning requirements. Therefore, the terminal device needs to perform high-precision measurements to obtain the transmit and receive time difference for positioning. In response to the above situation, the terminal device can implement Solution 1 or Solution 2.

[0088] Solution 1: After the terminal device obtains the transceiver difference, it reports the transceiver difference, which can be determined based on positioning measurement. Figure 5 is an example diagram of the transceiver difference calculation provided by Solution 1. As shown in Figure 5, the UE Tx-Rx It can be obtained by calculating the time difference between the positioning measurement and the first subframe. The first subframe can be the uplink subframe closest to the terminal device receiving the first positioning signal. In Figure 5, the number of the first subframe can be represented by j.

[0089] In the second solution, the terminal device does not report the T / R difference, but adjusts the SRS transmission timing to ensure that the network obtains an accurate T / R difference. The terminal device fine-tunes the time at which it will transmit the SRS. For example, as shown in Figure 6, due to the influence of the TA quantization interval and synchronization error, the downlink reception time directly obtained using downlink synchronization is advanced compared to the reception time measured using the downlink positioning pilot. If the transmission time for calculating the T / R difference is the position corresponding to dashed line 2 in the figure, then the T / R difference calculated directly using downlink synchronization increases compared to the value measured using the downlink positioning pilot. The value measured by the downlink positioning pilot is more accurate. Therefore, the adjusted SRS needs to be delayed by 2 times Δt0, increasing the T / R difference calculated by the base station, thereby eliminating the error in the T / R difference on the UE side. Δt0 represents the time by which the downlink synchronization time measured using the downlink positioning pilot is advanced compared to the value measured using the downlink synchronization signal. When transmitting signals, the terminal device's uplink transmission timing needs to be fine-tuned. The new uplink transmission time needs to be adjusted back by 2*Δt0 based on the original value so that the T / R difference reflects accurate information.

[0090] The difference between the transmission and reception obtained by adjusting the SRS transmission can be understood as follows: the difference between the transmission and reception of the terminal device can be determined based on the synchronous measurement. Figure 6 is an example diagram of the calculation of the difference between the transmission and reception provided by Solution 2. As shown in Figure 6, the UE Tx-Rx It can be obtained by synchronous measurement and calculation of the time difference between the first subframes. The first subframe can be the uplink subframe closest to the terminal device receiving the first positioning signal. In Figure 6, the number of the first subframe can be represented by j.

[0091] FIG7 is a wireless communication method provided in an embodiment of the present application to solve the above-mentioned problem.

[0092] The method shown in FIG. 7 may be executed by the first communication device and the second communication device.

[0093] In some embodiments, the first communication device may include the response device described above. That is, the first communication device may be the device to be located. For example, the first communication device may include a terminal device. The second communication device may include the initialization device described above. That is, the second communication device may be used to locate the first communication device. For example, the second communication device may include network equipment such as access network equipment and a positioning server. For example, the second communication device may include a non-terrestrial communication device. In other words, the present application may be applied in an NTN system.

[0094] Optionally, the positioning of the first communication device can be achieved through RTT positioning. During the RTT positioning process, the second communication device can send a first positioning signal to the first communication device. The first communication device can send a second positioning signal to the second communication device. For example, the first positioning signal may include a PRS. The second positioning signal may include an SRS. The difference between the time when the first communication device receives the first positioning signal and the time when it sends the second positioning signal can be a first time difference. That is, the first time difference can be the UE described above. Tx-Rx That is, the first time difference is the sending and receiving time difference used for RTT positioning.

[0095] In some embodiments, the first communication device may include the initialization device described above. That is, the first communication device may be used to locate other communication devices. For example, the first communication device may include network equipment such as an access network device. For example, the first communication device may include a non-terrestrial communication device. The second communication device may include a positioning server. Based on the information reported by the first communication device, the second communication device may locate the device to be located.

[0096] Optionally, the positioning of the device to be positioned can be achieved through RTT positioning. During the RTT positioning process, the first communication device can send a second positioning signal to the device to be positioned. The device to be positioned can send a first positioning signal to the first communication device. Exemplarily, the first positioning signal can include an SRS. The second positioning signal can include a PRS. The difference between the time when the first communication device receives the first positioning signal and the time when it sends the second positioning signal can be a first time difference. That is, the first time difference can be the gNB described above. Rx-Tx .

[0097] For ease of description, the following embodiments mostly take the first time difference as the UE Tx-Rx It is understood that the following embodiments can also be applied to the first time difference of gNB Rx-Tx This application does not limit this.

[0098] The method shown in FIG. 7 may include step S710 .

[0099] Step S710: The first communication device sends first information to the second communication device.

[0100] The first information may be related to the first time difference. For example, the first information may include the first time difference. That is, the first communications device may report the first time difference to the second communications device. In another example, the first information may indicate information related to the first time difference. Based on the received information related to the first time difference, the second device may calculate the first time difference.

[0101] The first information may also be related to a first TA and / or a second TA. The first TA may be the TA corresponding to the time period during which the first positioning signal is transmitted; the second TA may be the TA corresponding to the time period during which the second positioning signal is transmitted. Continuing with Figure 4 , the first TA may be TA#i; the second TA may be TA#1. TA#1 and TA#i are the timing advances used for uplink subframe 1 and downlink subframe i, respectively.

[0102] For example, the first information may include the first TA and / or the second TA. In another example, the first information may be information related to the first TA and / or the second TA. Exemplarily, the first information may be calculated using the first TA and / or the second TA.

[0103] It should be noted that the values ​​of the first TA and the second TA may be different or the same.

[0104] Therefore, it can be seen that the first information reported by the first communication device not only takes into account the first time difference, but also takes into account the first TA and / or the second TA. Therefore, even if the values ​​of the first TA and the second TA are different, the problem of inaccurate positioning caused by the different values ​​of the first TA and the second TA can be corrected based on the first information.

[0105] In some embodiments, the first time difference can be determined based on the first TA and / or the second TA. That is, the transmit / receive time difference can be adjusted based on the first TA and / or the second TA. For example, the first time difference can be calculated based on the first TA and / or the second TA to obtain the second time difference. The second time difference is described in detail below.

[0106] The first subframe is the uplink subframe closest to the time at which the first communications device receives the first positioning signal. The difference between the time at which the first communications device receives the first path of the first positioning signal and the time at which the first subframe begins can be the second time difference. The first subframe used to calculate the second time difference can be the start time of the first subframe. In other words, the second time difference can be the difference between the time at which the first communications device receives the first path of the first positioning signal and the start time of the first subframe.

[0107] As shown in Figure 8 , the first communications device receives the first positioning signal in downlink subframe i, and the first subframe is uplink subframe j. The second time difference is d, as shown in Figure 8 . That is, d = the time the first communications device receives the first positioning signal on the first path – the uplink time of subframe #j, or d = the uplink time of subframe #j – the time the first communications device receives the first positioning signal on the first path.

[0108] It is understandable that the second time difference can be calculated using the method for calculating the transmit / receive time difference defined in the relevant art. Therefore, the present application can compensate for the impact of the first TA and / or second TA on the transmit / receive time difference by incorporating it into the transmit / receive time difference, thereby obtaining a more accurate transmit / receive time difference and achieving more precise positioning.

[0109] Optionally, the first time difference may be determined based on a difference between the first TA and the second TA. The difference between the first TA and the second TA may include: first TA - second TA, second TA - first TA, or |first TA - second TA|, where || represents an absolute value.

[0110] In some embodiments, an adjustment amount of the second time difference may be calculated based on the difference between the first TA and the second TA. Based on the second time difference and the adjustment amount, the first time difference may be obtained.

[0111] For example, the first time difference can be obtained by UE Tx-Rx Indicates. UE Tx-Rx Can meet: UE Tx-Rx=d+TA2−TA1, where d represents the second time difference, TA2 represents the value of the second TA, and TA1 represents the value of the first TA.

[0112] As mentioned above, the first time difference can be calculated based on the second time difference in the related art. It is understandable that this technical solution can reuse the calculation method in the related art, with minor changes to the related art and easier implementation.

[0113] In some embodiments, the calculation method of the first time difference may be redefined.

[0114] For example, the first time difference can be determined by a first value. A method for calculating the first value is described in detail below.

[0115] The difference between the time when the first communication device receives the first path of the first positioning signal and the time when the second positioning signal is sent may be the third time difference. The value obtained by taking the modulus of the third time difference by the subframe length may be the first value. The subframe length may refer to the duration of a subframe.

[0116] As shown in Figure 9 , the time when the first communication device receives the first path of the first positioning signal is downlink subframe i. The time when the second positioning signal is sent is uplink subframe 1. The third time difference may be the difference between the start time of subframe i and the start time of subframe 1. That is, the third time difference may be the time difference marked with reference numeral g in Figure 9 .

[0117] Exemplarily, the first time difference UE Tx-Rx Can meet: UE Tx-Rx =Ts-mod(g, Ts). Where g represents the third time difference, Ts represents the subframe length, and mod() represents the remainder. Tx-Rx 9 , the first time difference may be the length of the subframes less than the integer multiples of subframes minus the integer multiples of subframes from subframe 1 and the time period when the first communication device receives the first positioning signal.

[0118] As can be seen from Figure 9, the first time difference UE calculated according to the third time difference g Tx-Rx It is not affected by TA, thus avoiding the problem of inaccurate positioning caused by the difference between the first TA and the second TA.

[0119] In some embodiments, the first communications device may adjust the time at which the first positioning signal is received (receive time) and / or the time at which the second positioning signal is sent (send time). Based on the adjusted receive time and send time, the first time difference may still be calculated using relevant techniques to achieve precise positioning.

[0120] Optionally, when calculating the first time difference, the time at which the first communications device receives the first positioning signal may be adjusted to a first moment. The first moment may be associated with a first subframe and a second subframe. The first subframe may be the uplink subframe closest to when the first communications device receives the first positioning signal. The second subframe may be the subframe in which the first communications device transmits the second positioning signal.

[0121] Exemplarily, the first time T1 may satisfy T1=T3+(lj)*Ts, where T3 represents the time when the first communication device receives the first path of the first positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

[0122] It can be seen from this that when calculating the sending and receiving time difference (ie, the first time difference), the sending time T used is UE-TX It is the subframe time when the first communication device sends the second positioning signal.

[0123] In Figure 10, the first moment is represented by T1 and the third moment is represented by T3. As can be seen from Figure 10, the first moment T1 can satisfy T1=T3+(lj)*Ts. Based on the calculated first moment T1, the UE Tx-Rx .

[0124] Optionally, when calculating the first time difference, the time at which the first communications device transmits the second positioning signal may be adjusted to a second moment. The second moment may be related to the first subframe and the second subframe. The first subframe may be the uplink subframe closest to when the first communications device receives the first positioning signal. The second subframe may be the subframe in which the first communications device transmits the second positioning signal.

[0125] Exemplarily, the second time T2 may satisfy: T2=T4-(lj)*Ts, where T4 represents the time when the first communication device sends the second positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

[0126] In some embodiments, the first communication device can adjust the time at which the second positioning signal will be sent. Since the transmit and receive time difference calculated by the first communication device side is larger than the actual time difference, the adjusted first positioning signal needs to be delayed, so that the transmit and receive difference calculated by the second communication device side increases, thereby eliminating the error of the transmit and receive difference on the first communication device side. For example, the downlink synchronization moment measured by the first positioning signal is Δt0 earlier than the value measured by the downlink synchronization signal. When sending the signal, the uplink transmission moment of the first communication device needs to be fine-tuned, and the new uplink transmission moment needs to be adjusted backward by Δt0 on the original basis, so that the transmit and receive difference can reflect accurate information.

[0127] In some embodiments, the first information may include a first TA and / or a second TA. For example, the first communications device may report the first TA and / or the second TA to the second communications device, so that the second communications device can compensate for the transmission and reception time difference based on the first TA and / or the second TA, thereby obtaining the first time difference. That is, during the position calculation process, the second communications device can consider the impact of the TA on the RTT, thereby achieving accurate positioning.

[0128] In some embodiments, the first information may include a difference between the first TA and the second TA. That is, the first communications device may report the difference between the first TA and the second TA to the second communications device, so that the second communications device can compensate for the difference in transmitting and receiving time based on the difference between the first TA and the second TA, thereby obtaining the first time difference.

[0129] It can be understood that, based on one or more of the received first TA, the second TA, and the difference between the first TA and the second TA, the method for calculating the first time difference in the above embodiment can be executed by the second communication device.

[0130] Optionally, the first communication device may send the transceiver time difference in related technologies to the second communication device. For example, the first communication device may report the time of receiving the first path of the first positioning signal minus the uplink time of the first subframe. The first subframe is the uplink subframe closest to the time when the first communication device receives the first positioning signal. Based on one or more of the first TA, the second TA, and the difference between the first TA and the second TA contained in the first information, the second communication device may compensate for the transceiver time difference in related technologies, thereby obtaining a more accurate transceiver time difference and achieving accurate positioning.

[0131] Optionally, the second communication device may determine the transmit / receive time difference or RTT based on one or more of the first TA, the second TA, and the difference between the first TA and the second TA included in the first information. In other words, even if the first communication device does not report the transmit / receive time difference to the second communication device, the second communication device may still independently calculate the RTT and / or transmit / receive time difference based on the first information.

[0132] It should be noted that the first TA and / or the second TA may be adjusted automatically by the first communication device. For example, the first communication device may include a terminal device, and the terminal device may adjust the TA automatically. In this case, the first communication device may adjust the TA automatically and report TA information related to RTT positioning (e.g., including one or more of the first TA, the second TA, and the difference between the first TA and the second TA) to the second communication device.

[0133] It should be noted that the first TA and / or second TA can be adjusted by the second communication device. For example, the second communication device may include a base station, which can adjust the TA of the first communication device. In this case, the second communication device can directly obtain TA information related to RTT positioning and adjust the RTT positioning process.

[0134] It should be noted that the first TA and / or the second TA may be adjusted by a third communication device. The third communication device may be a device different from the first and second communication devices. For example, the first communication device may be a terminal device, the second communication device may be a positioning server, and the third communication device may be a base station. In this case, the third communication device may directly send TA information related to RTT positioning to the second communication device, or the third communication device may send TA information related to RTT positioning to the first communication device, which then forwards the TA information related to RTT positioning to the second communication device.

[0135] In some embodiments, the TA can be adjusted based on the accuracy of positioning and synchronization measurements. For example, if the first communication device includes a terminal device, the terminal device can adjust the second TA based on the accuracy of positioning and synchronization measurements to improve the accuracy of the transmit / receive time difference. It is understood that in this case, the purpose of adjusting the TA may not be to ensure the orthogonality of the uplink signals of each user, but to more accurately calculate the transmit / receive time difference.

[0136] The method embodiments of the present application are described in detail above, and the device embodiments of the present application are described in detail below. It should be understood that the description of the method embodiments corresponds to the description of the device embodiments, so for parts not described in detail, reference can be made to the above method embodiments.

[0137] FIG11 is a schematic structural diagram of a communication device 1100 provided in an embodiment of the present application. The communication device 1100 is a first communication device and includes a sending unit 1110 .

[0138] A sending unit is used to send first information; wherein, the difference between the moment when the first communication device receives the first positioning signal and the moment when it sends the second positioning signal is the first time difference, the TA corresponding to the time period for transmitting the first positioning signal is the first TA, and the TA corresponding to the time period for transmitting the second positioning signal is the second TA, the first information is related to the first time difference, and the first information is also related to the first TA and / or the second TA.

[0139] In some embodiments, the first time difference is determined based on the first TA and / or the second TA.

[0140] In some embodiments, the first time difference is determined based on a difference between the first TA and the second TA.

[0141] In some embodiments, the first time difference UE Tx-Rx Meets: UE Tx-Rx =d+TA2–TA1; wherein, the first subframe is the uplink subframe closest to the time when the first communication device receives the first positioning signal, and the difference between the time when the first communication device receives the first path of the first positioning signal and the first subframe is the second time difference, d represents the second time difference, TA2 represents the second TA, and TA1 represents the first TA.

[0142] In some embodiments, the difference between the time when the first communication device receives the first path of the first positioning signal and the time when it sends the second positioning signal is the third time difference, the value obtained by taking the modulus of the third time difference with respect to the subframe length is the first value, and the first time difference is determined by the first value.

[0143] In some embodiments, the first time difference UE Tx-Rx Meets: UE Tx-Rx =Ts-mod(g, Ts); wherein g represents the third time difference, Ts represents the subframe length, and mod() represents the remainder.

[0144] In some embodiments, when calculating the first time difference, the time when the first communication device receives the first positioning signal is adjusted to the first moment, the first moment is related to the first subframe and the second subframe, the first subframe is the uplink subframe closest to the distance where the first communication device receives the first positioning signal, and the second subframe is the subframe at which the first communication device sends the second positioning signal.

[0145] In some embodiments, the first moment T1 satisfies: T1=T3+(lj)*Ts, where T3 represents the time when the first communication device receives the first path of the first positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

[0146] In some embodiments, when calculating the first time difference, the time at which the first communication device sends the second positioning signal is adjusted to a second moment, and the second moment is related to the first subframe and the second subframe. The first subframe is the uplink subframe closest to the distance at which the first communication device receives the first positioning signal, and the second subframe is the subframe at which the first communication device sends the second positioning signal.

[0147] In some embodiments, the second time T2 satisfies: T2=T4-(lj)*Ts, where T4 represents the time when the first communication device sends the second positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

[0148] In some embodiments, the first information includes a first TA and / or a second TA.

[0149] In some embodiments, the first information includes a difference between the first TA and the second TA.

[0150] In an optional embodiment, the sending unit 1110 may be a transceiver 1330. The communication device 1100 may further include a processor 1310 and a memory 1320, as specifically shown in FIG13 .

[0151] FIG12 is a schematic structural diagram of a communication device 1200 provided in an embodiment of the present application. The communication device 1200 is a second communication device and includes a receiving unit 1210 .

[0152] The receiving unit 1210 is used to receive the first information sent by the first communication device; wherein, the difference between the time when the first communication device receives the first positioning signal and the time when it sends the second positioning signal is the first time difference, the TA corresponding to the time period for transmitting the first positioning signal is the first TA, and the TA corresponding to the time period for transmitting the second positioning signal is the second TA, the first information is related to the first time difference, and the first information is also related to the first TA and / or the second TA.

[0153] In some embodiments, the first time difference is determined based on the first TA and / or the second TA.

[0154] In some embodiments, the first time difference is determined based on a difference between the first TA and the second TA.

[0155] In some embodiments, the first time difference UE Tx-Rx Meets: UE Tx-Rx =d+TA2–TA1; wherein, the first subframe is the uplink subframe closest to the time when the first communication device receives the first positioning signal, and the difference between the time when the first communication device receives the first path of the first positioning signal and the first subframe is the second time difference, d represents the second time difference, TA2 represents the second TA, and TA1 represents the first TA.

[0156] In some embodiments, the difference between the time when the first communication device receives the first path of the first positioning signal and the time when it sends the second positioning signal is the third time difference, the value obtained by taking the modulus of the third time difference with respect to the subframe length is the first value, and the first time difference is determined by the first value.

[0157] In some embodiments, the first time difference UE Tx-Rx Meets: UE Tx-Rx =Ts-mod(g, Ts); wherein g represents the third time difference, Ts represents the subframe length, and mod() represents the remainder.

[0158] In some embodiments, when calculating the first time difference, the time when the first communication device receives the first positioning signal is adjusted to the first moment, the first moment is related to the first subframe and the second subframe, the first subframe is the uplink subframe closest to the distance where the first communication device receives the first positioning signal, and the second subframe is the subframe at which the first communication device sends the second positioning signal.

[0159] In some embodiments, the first moment T1 satisfies: T1=T3+(lj)*Ts, where T3 represents the time when the first communication device receives the first path of the first positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

[0160] In some embodiments, when calculating the first time difference, the time at which the first communication device sends the second positioning signal is adjusted to a second moment, and the second moment is related to the first subframe and the second subframe. The first subframe is the uplink subframe closest to the distance at which the first communication device receives the first positioning signal, and the second subframe is the subframe at which the first communication device sends the second positioning signal.

[0161] In some embodiments, the second time T2 satisfies: T2=T4-(lj)*Ts, where T4 represents the time when the first communication device sends the second positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

[0162] In some embodiments, the first information includes a first TA and / or a second TA.

[0163] In some embodiments, the first information includes a difference between the first TA and the second TA.

[0164] In an optional embodiment, the receiving unit 1210 may be a transceiver 1330. The communication device 1200 may further include a processor 1310 and a memory 1320, as specifically shown in FIG13 .

[0165] Figure 13 is a schematic block diagram of a communication device according to an embodiment of the present application. The dashed lines in Figure 13 indicate that the unit or module is optional. Apparatus 1300 may be used to implement the method described in the above method embodiment. Apparatus 1300 may be a chip, a terminal device, or a network device.

[0166] The device 1300 may include one or more processors 1310. The processor 1310 may support the device 1300 to implement the method described in the method embodiment above. The processor 1310 may be a general-purpose processor or a special-purpose processor. For example, the processor may be a central processing unit (CPU). Alternatively, the processor may be another general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc.

[0167] The apparatus 1300 may further include one or more memories 1320. The memories 1320 store programs that can be executed by the processor 1310, causing the processor 1310 to perform the methods described in the above method embodiments. The memories 1320 may be independent of the processor 1310 or integrated into the processor 1310.

[0168] The apparatus 1300 may further include a transceiver 1330. The processor 1310 may communicate with other devices or chips via the transceiver 1330. For example, the processor 1310 may transmit and receive data with other devices or chips via the transceiver 1330.

[0169] The present invention also provides a computer-readable storage medium for storing a program. The computer-readable storage medium can be applied to the communication device provided in the present invention, and the program enables a computer to execute the method performed by the communication device in each embodiment of the present invention.

[0170] The present application also provides a computer program product. The computer program product includes a program. The computer program product can be applied to the communication device provided in the present application, and the program causes a computer to execute the method performed by the communication device in each embodiment of the present application.

[0171] The embodiments of the present application also provide a computer program. The computer program can be applied to the communication device provided in the embodiments of the present application, and the computer program enables a computer to execute the method executed by the communication device in each embodiment of the present application.

[0172] It should be understood that the terms "system" and "network" in this application can be used interchangeably. In addition, the terms used in this application are only used to explain the specific embodiments of this application and are not intended to limit this application. The terms "first", "second", "third", and "fourth" in the specification and claims of this application and the accompanying drawings are used to distinguish different objects rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0173] In the embodiments of this application, the term "indication" may refer to a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" may refer to a direct indication of B, e.g., B can obtain information through A; it may refer to an indirect indication of B, e.g., A indicates C, e.g., B can obtain information through C; or it may refer to an association between A and B.

[0174] In the embodiment of the present application, "B corresponding to A" means that B is associated with A and B can be determined based on A. However, it should be understood that determining B based on A does not mean determining B based solely on A, but B can also be determined based on A and / or other information.

[0175] In the embodiments of the present application, the term "corresponding" may indicate a direct or indirect correspondence between the two, or an association relationship between the two, or a relationship between indication and indication, configuration and configuration, etc.

[0176] In the embodiments of the present application, "pre-definition" or "pre-configuration" may be implemented by pre-storing corresponding codes, tables, or other methods that can be used to indicate relevant information in a device (e.g., a terminal device and a network device). The present application does not limit the specific implementation method. For example, pre-definition may refer to information defined in a protocol.

[0177] In the embodiments of the present application, the “protocol” may refer to a standard protocol in the communications field, for example, it may include an LTE protocol, an NR protocol, and related protocols used in future communication systems, and the present application does not limit this.

[0178] In the embodiments of this application, the term "and / or" is simply a description of the association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0179] In the embodiments of this application, the term "include" can refer to direct inclusion or indirect inclusion. Alternatively, the term "include" in the embodiments of this application can be replaced with "indicates" or "is used to determine." For example, "A includes B" can be replaced with "A indicates B" or "A is used to determine B."

[0180] In various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0181] In the several embodiments provided in this application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0182] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0183] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0184] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using software, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center via a wired (e.g., coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) method. The computer-readable storage medium can be any available medium that can be read by a computer or a data storage device such as a server or data center that includes one or more available media integrated therein. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)).

[0185] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A wireless communication method, characterized in that: include: The first communication device sends the first information; Among them, the difference between the time when the first communication device receives the first positioning signal and the time when it sends the second positioning signal is the first time difference, the time advance TA corresponding to the time period for transmitting the first positioning signal is the first TA, and the TA corresponding to the time period for transmitting the second positioning signal is the second TA, the first information is related to the first time difference, and the first information is also related to the first TA and / or the second TA.

2. The method according to claim 1, characterized in that The first time difference is determined based on the first TA and / or the second TA.

3. The method according to claim 2, characterized in that The first time difference is determined based on a difference between the first TA and the second TA.

4. The method according to claim 3, characterized in that: The first time difference UE Tx-Rx Meets:UE Tx-Rx =d+TA2–TA1; wherein, the first subframe is the uplink subframe closest to the first communication device receiving the first positioning signal, the difference between the time when the first communication device receives the first positioning signal and the first subframe is the second time difference, d represents the second time difference, TA2 represents the second TA, and TA1 represents the first TA.

5. The method according to claim 1, characterized in that The difference between the time when the first communication device receives the first path of the first positioning signal and the time when it sends the second positioning signal is a third time difference, and the value obtained by taking the modulus of the subframe length of the third time difference is a first value, and the first time difference is determined by the first value.

6. The method according to claim 5, characterized in that The first time difference UE Tx-Rx Meets:UE Tx- Rx =Ts-mod(g, Ts); wherein g represents the third time difference, Ts represents the subframe length, and mod() represents modulo.

7. The method according to claim 1, characterized in that When calculating the first time difference, the time when the first communication device receives the first positioning signal is adjusted to a first moment, and the first moment is related to a first subframe and a second subframe. The first subframe is an uplink subframe closest to the first communication device receiving the first positioning signal, and the second subframe is a subframe at which the first communication device sends the second positioning signal.

8. The method according to claim 7, characterized in that The first moment T1 satisfies: T1=T3+(lj)*Ts, where T3 represents the time when the first communication device receives the first path of the first positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

9. The method according to claim 1, characterized in that: When calculating the first time difference, the time when the first communication device sends the second positioning signal is adjusted to a second moment, and the second moment is related to a first subframe and a second subframe. The first subframe is an uplink subframe closest to the first communication device receiving the first positioning signal, and the second subframe is a subframe at which the first communication device sends the second positioning signal.

10. The method according to claim 9, characterized in that The second moment T2 satisfies: T2=T4-(lj)*Ts, where T4 represents the time when the first communication device sends the second positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

11. The method according to any one of claims 1 to 10, characterized in that The first information includes a first TA and / or a second TA.

12. The method according to any one of claims 1 to 11, characterized in that The first information includes a difference between the first TA and the second TA.

13. A wireless communication method, characterized in that: include: The second communication device receives the first information sent by the first communication device; Among them, the difference between the time when the first communication device receives the first positioning signal and the time when it sends the second positioning signal is the first time difference, the time advance TA corresponding to the time period for transmitting the first positioning signal is the first TA, and the TA corresponding to the time period for transmitting the second positioning signal is the second TA, the first information is related to the first time difference, and the first information is also related to the first TA and / or the second TA.

14. The method according to claim 13, characterized in that The first time difference is determined based on the first TA and / or the second TA.

15. The method according to claim 14, characterized in that The first time difference is determined based on a difference between the first TA and the second TA.

16. The method according to claim 15, characterized in that The first time difference UE Tx-Rx Meets:UE Tx- Rx =d+TA2–TA1; wherein, the first subframe is the uplink subframe closest to the first communication device receiving the first positioning signal, the difference between the time when the first communication device receives the first positioning signal and the first subframe is the second time difference, d represents the second time difference, TA2 represents the second TA, and TA1 represents the first TA.

17. The method according to claim 13, characterized in that The difference between the time when the first communication device receives the first path of the first positioning signal and the time when it sends the second positioning signal is a third time difference, and the value obtained by taking the modulus of the subframe length of the third time difference is a first value, and the first time difference is determined by the first value.

18. The method according to claim 17, characterized in that The first time difference UE Tx-Rx Meets:UE Tx- Rx =Ts-mod(g, Ts); wherein g represents the third time difference, Ts represents the subframe length, and mod() represents modulo.

19. The method according to claim 13, characterized in that When calculating the first time difference, the time when the first communication device receives the first positioning signal is adjusted to a first moment, and the first moment is related to a first subframe and a second subframe. The first subframe is an uplink subframe closest to the first communication device receiving the first positioning signal, and the second subframe is a subframe at which the first communication device sends the second positioning signal.

20. The method according to claim 19, characterized in that The first moment T1 satisfies: T1=T3+(lj)*Ts, where T3 represents the time when the first communication device receives the first path of the first positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

21. The method according to claim 13, characterized in that When calculating the first time difference, the time when the first communication device sends the second positioning signal is adjusted to a second moment, and the second moment is related to a first subframe and a second subframe. The first subframe is an uplink subframe closest to the first communication device receiving the first positioning signal, and the second subframe is a subframe at which the first communication device sends the second positioning signal.

22. The method according to claim 21, characterized in that The second moment T2 satisfies: T2=T4-(lj)*Ts, where T4 represents the time when the first communication device sends the second positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

23. The method according to any one of claims 13 to 22, characterized in that The first information includes a first TA and / or a second TA.

24. The method according to any one of claims 13 to 23, characterized in that The first information includes a difference between the first TA and the second TA.

25. A communication device, characterized in that: The communication device is a first communication device, and the communication device includes: A sending unit, configured to send first information; Among them, the difference between the time when the first communication device receives the first positioning signal and the time when it sends the second positioning signal is the first time difference, the time advance TA corresponding to the time period for transmitting the first positioning signal is the first TA, and the TA corresponding to the time period for transmitting the second positioning signal is the second TA, the first information is related to the first time difference, and the first information is also related to the first TA and / or the second TA.

26. The device according to claim 25, characterized in that The first time difference is determined based on the first TA and / or the second TA.

27. The device according to claim 26, characterized in that The first time difference is determined based on a difference between the first TA and the second TA.

28. The device according to claim 27, characterized in that The first time difference UE Tx-Rx Meets:UE Tx- Rx =d+TA2–TA1; wherein, the first subframe is the uplink subframe closest to the first communication device receiving the first positioning signal, the difference between the time when the first communication device receives the first positioning signal and the first subframe is the second time difference, d represents the second time difference, TA2 represents the second TA, and TA1 represents the first TA.

29. The device according to claim 25, characterized in that The difference between the time when the first communication device receives the first path of the first positioning signal and the time when it sends the second positioning signal is a third time difference, and the value obtained by taking the modulus of the subframe length of the third time difference is a first value, and the first time difference is determined by the first value.

30. The device according to claim 29, characterized in that The first time difference UE Tx-Rx Meets:UE Tx- Rx =Ts-mod(g, Ts); wherein g represents the third time difference, Ts represents the subframe length, and mod() represents modulo.

31. The device according to claim 25, characterized in that When calculating the first time difference, the time when the first communication device receives the first positioning signal is adjusted to a first moment, and the first moment is related to a first subframe and a second subframe. The first subframe is an uplink subframe closest to the first communication device receiving the first positioning signal, and the second subframe is a subframe at which the first communication device sends the second positioning signal.

32. The device according to claim 31, characterized in that The first moment T1 satisfies: T1=T3+(lj)*Ts, where T3 represents the time when the first communication device receives the first path of the first positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

33. The device according to claim 25, characterized in that When calculating the first time difference, the time when the first communication device sends the second positioning signal is adjusted to a second moment, and the second moment is related to a first subframe and a second subframe. The first subframe is an uplink subframe closest to the first communication device receiving the first positioning signal, and the second subframe is a subframe at which the first communication device sends the second positioning signal.

34. The device according to claim 33, characterized in that The second moment T2 satisfies: T2=T4-(lj)*Ts, where T4 represents the time when the first communication device sends the second positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

35. The apparatus according to any one of claims 25 to 34, characterized in that The first information includes a first TA and / or a second TA.

36. The device according to any one of claims 25 to 35, characterized in that The first information includes a difference between the first TA and the second TA.

37. A communication device, characterized in that: The communication device is a second communication device, and the communication device includes: A receiving unit, configured to receive first information sent by a first communication device; Among them, the difference between the time when the first communication device receives the first positioning signal and the time when it sends the second positioning signal is the first time difference, the time advance TA corresponding to the time period for transmitting the first positioning signal is the first TA, and the TA corresponding to the time period for transmitting the second positioning signal is the second TA, the first information is related to the first time difference, and the first information is also related to the first TA and / or the second TA.

38. The device according to claim 37, characterized in that The first time difference is determined based on the first TA and / or the second TA.

39. The device according to claim 38, characterized in that The first time difference is determined based on a difference between the first TA and the second TA.

40. The device according to claim 39, characterized in that The first time difference UE Tx-Rx Meets:UE Tx- Rx =d+TA2–TA1; wherein, the first subframe is the uplink subframe closest to the first communication device receiving the first positioning signal, the difference between the time when the first communication device receives the first positioning signal and the first subframe is the second time difference, d represents the second time difference, TA2 represents the second TA, and TA1 represents the first TA.

41. The apparatus according to claim 37, characterized in that The difference between the time when the first communication device receives the first path of the first positioning signal and the time when it sends the second positioning signal is a third time difference, and the value obtained by taking the modulus of the subframe length of the third time difference is a first value, and the first time difference is determined by the first value.

42. The device according to claim 41, characterized in that The first time difference UE Tx-Rx Meets:UE Tx- Rx =Ts-mod(g, Ts); wherein g represents the third time difference, Ts represents the subframe length, and mod() represents modulo.

43. The apparatus according to claim 37, characterized in that When calculating the first time difference, the time when the first communication device receives the first positioning signal is adjusted to a first moment, and the first moment is related to a first subframe and a second subframe. The first subframe is an uplink subframe closest to the first communication device receiving the first positioning signal, and the second subframe is a subframe at which the first communication device sends the second positioning signal.

44. The device according to claim 43, characterized in that The first moment T1 satisfies: T1=T3+(lj)*Ts, where T3 represents the time when the first communication device receives the first path of the first positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

45. The apparatus according to claim 37, characterized in that When calculating the first time difference, the time when the first communication device sends the second positioning signal is adjusted to a second moment, and the second moment is related to a first subframe and a second subframe. The first subframe is an uplink subframe closest to the first communication device receiving the first positioning signal, and the second subframe is a subframe at which the first communication device sends the second positioning signal.

46. ​​The device according to claim 45, characterized in that The second moment T2 satisfies: T2=T4-(lj)*Ts, where T4 represents the time when the first communication device sends the second positioning signal, j represents the number of the first subframe, l represents the number of the second subframe, and Ts represents the subframe length.

47. The apparatus according to any one of claims 37 to 46, characterized in that The first information includes a first TA and / or a second TA.

48. The apparatus according to any one of claims 37 to 47, characterized in that The first information includes a difference between the first TA and the second TA.

49. A communication device, characterized in that: The device comprises a memory and a processor, wherein the memory is used to store a program, and the processor is used to call the program in the memory so that the communication device executes the method according to any one of claims 1 to 8.

50. A device, characterized in that The device comprises a processor, configured to call a program from a memory so as to enable the device to execute the method according to any one of claims 1 to 24.

51. A chip, characterized in that: It comprises a processor, which is used to call a program from a memory, so that a device equipped with the chip executes a method as claimed in any one of claims 1 to 24.

52. A computer-readable storage medium, characterized in that: A program is stored thereon, the program causing a computer to execute the method according to any one of claims 1 to 24.

53. A computer program product, characterized in that The method comprises a program which causes a computer to execute the method according to any one of claims 1 to 24.

54. A computer program, characterized in that The computer program enables a computer to execute the method according to any one of claims 1 to 24.

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