Wireless positioning method and device, equipment and storage medium

Abstract

The invention discloses a wireless positioning method and device, equipment and a storage medium, and relates to the technical field of communication. The method is executed by a terminal, and the method comprises the following steps: after executing a random access process with a first network device, sending a signal to the first network device and at least one second network device.

Description

Wireless positioning method, device, equipment and storage medium Technical Field

[0001] The present application relates to the field of communication technology, and in particular to wireless positioning methods, devices, equipment and storage media. Background Art

[0002] In the New Radio (NR) system, the Time Difference of Arrival (TDOA) positioning method can be used to achieve terminal positioning. The basic principle of the TDOA positioning method is to estimate the terminal's position based on the transmission time deviation of the signal sent by the terminal to multiple network devices and the known locations of multiple network devices. Among them, the TDOA positioning method requires the establishment of Radio Resource Control (RRC) connections between the terminal and multiple network devices to realize the transmission of measurement signals.

[0003] Summary of the Invention

[0004] The present invention provides a wireless positioning method, apparatus, device, and storage medium. After performing a random access process with a first network device, a terminal sends signals to multiple network devices to achieve positioning. The technical solution is as follows:

[0005] According to one aspect of the present application, a wireless positioning method is provided, which is executed by a terminal and includes:

[0006] After performing a random access procedure with the first network device, a signal is sent to the first network device and at least one second network device.

[0007] According to one aspect of the present application, a wireless positioning method is provided. The method is performed by a first network device, and the method includes:

[0008] receiving a signal sent by a terminal;

[0009] The signal is sent by the terminal after performing a random access process with the first network device.

[0010] According to one aspect of the present application, a wireless positioning method is provided. The method is performed by a second network device, and the method includes:

[0011] receiving a signal sent by a terminal;

[0012] The signal is sent by the terminal after performing a random access process with the first network device.

[0013] According to one aspect of the present application, a wireless positioning method is provided, which is performed by an access and mobility management function. The method includes:

[0014] Sending a paging message to the terminal;

[0015] The paging message is used to trigger the terminal to perform positioning based on the signal.

[0016] According to one aspect of the present application, a wireless positioning method is provided. The method is performed by a positioning management function, and the method includes:

[0017] receiving configuration information of a signal sent by the first network device;

[0018] The signal is configured by the first network device for the terminal.

[0019] According to one aspect of the present application, a wireless positioning device is provided, the device comprising:

[0020] The sending module is used for the terminal to send a signal to the first network device and at least one second network device after performing a random access process with the first network device.

[0021] According to one aspect of the present application, a wireless positioning device is provided, the device comprising:

[0022] A receiving module, used for receiving signals sent by the terminal;

[0023] The signal is sent by the terminal after performing a random access process with the first network device.

[0024] According to one aspect of the present application, a wireless positioning device is provided, the device comprising:

[0025] A receiving module, used for receiving signals sent by the terminal;

[0026] The signal is sent by the terminal after performing a random access process with the first network device.

[0027] According to one aspect of the present application, a wireless positioning device is provided, the device comprising:

[0028] A sending module, used for sending a paging message to a terminal;

[0029] The paging message is used to trigger the terminal to perform positioning based on the signal.

[0030] According to one aspect of the present application, a wireless positioning device is provided, the device comprising:

[0031] A receiving module, configured to receive configuration information of a signal sent by the first network device;

[0032] The signal is configured by the first network device for the terminal.

[0033] According to one aspect of the present application, a terminal is provided, the terminal including a memory and a processor;

[0034] At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method as described above.

[0035] According to one aspect of the present application, a first network device is provided, the first network device including a memory and a processor;

[0036] At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method as described above.

[0037] According to one aspect of the present application, a second network device is provided, the second network device including a memory and a processor;

[0038] At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method as described above.

[0039] According to one aspect of the present application, an access and mobility management function (AMF) is provided, the AMF including a memory and a processor;

[0040] At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method as described above.

[0041] According to one aspect of the present application, a location management function LMF is provided, the LMF including a memory and a processor;

[0042] At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method as described above.

[0043] According to one aspect of the present application, a computer-readable storage medium is provided, in which a computer program is stored. The computer program is configured to be executed by a processor to implement the wireless positioning method as described above.

[0044] According to one aspect of the present application, a chip is provided. The chip includes a programmable logic circuit and / or program instructions, and when an electronic device equipped with the chip is running, it is used to implement the wireless positioning method as described above.

[0045] According to one aspect of the present application, a computer program product is provided, which includes computer instructions stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the wireless positioning method as described above.

[0046] The technical solutions provided by the embodiments of the present application include at least the following beneficial effects:

[0047] After performing a random access procedure with a first network device, the terminal sends a positioning signal to the first network device and at least one second network device. Based on this, the terminal and multiple network devices do not need to establish a Radio Resource Control (RRC) connection to achieve wireless positioning in the idle state. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0049] FIG1 is a schematic diagram of a terminal performing positioning according to an exemplary embodiment of the present application;

[0050] FIG2 is a schematic diagram of an information block of a random access response provided by an exemplary embodiment of the present application;

[0051] FIG3 is a schematic diagram of an information block of another random access response provided by an exemplary embodiment of the present application;

[0052] FIG4 is a frequency domain schematic diagram of a sounding reference signal provided by an exemplary embodiment of the present application;

[0053] FIG5 is a frequency domain schematic diagram of a sounding reference signal provided by an exemplary embodiment of the present application;

[0054] FIG6 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application;

[0055] FIG7 is a flow chart of a wireless positioning method provided by an exemplary embodiment of the present application;

[0056] FIG8 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application;

[0057] FIG9 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application;

[0058] FIG10 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application;

[0059] FIG11 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application;

[0060] FIG12 is a flowchart of a wireless positioning method based on two-step random access according to an exemplary embodiment of the present application;

[0061] FIG13 is a flowchart of a wireless positioning method based on four-step random access according to an exemplary embodiment of the present application;

[0062] FIG14 is a flow chart of a wireless positioning method provided by an exemplary embodiment of the present application;

[0063] FIG15 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application;

[0064] FIG16 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application;

[0065] FIG17 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application;

[0066] FIG18 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application;

[0067] FIG19 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application;

[0068] FIG20 is a block diagram of a communication device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0069] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0070] The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, Advanced Long Term Evolution (LTE-A) system, New Radio (NR) system, NR system evolution system, LTE on unlicensed spectrum (LTE-U) system, NR on unlicensed spectrum (NR-U) system, Non-Terrestrial Networks (NTN) system, Universal Mobile Telecommunication System (UMTS), Wireless Local Area Networks (WLAN), Wireless Fidelity (Wireless Fidelity) system. Fidelity, WiFi), fifth-generation communication (5th-Generation, 5G) system or other communication systems, etc.

[0071] With the development of communication technology, mobile communication systems will not only support traditional communications, but also support, for example, Internet of Things (IoT) communications, and the embodiments of the present application can be applied to IoT communication systems.

[0072] The IoT communication system includes multiple terminals, and information exchange and communication can be achieved between each two terminals.

[0073] The terminal may also be referred to as User Equipment (UE). A terminal may be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal device in a next-generation communication system such as a NR network, or a terminal device in a future evolved Public Land Mobile Network (PLMN) network.

[0074] In an embodiment of the present application, the terminal can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water surface (such as a ship, etc.); it can also be deployed in the air (for example, on an airplane, balloon, and satellite, etc.).

[0075] In an embodiment of the present application, the terminal may be a mobile phone, a tablet computer, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal device in industrial control, a wireless terminal device in self-driving, a wireless terminal device in remote medical, a wireless terminal device in a smart grid, a wireless terminal device in transportation safety, a wireless terminal device in a smart city, or a wireless terminal device in a smart home, etc.

[0076] As an example and not a limitation, in the embodiment of the present application, the terminal may also be a wearable device. Wearable devices may also be called wearable smart devices, which are a general term for wearable devices that use wearable technology to intelligently design and develop wearable devices for daily wear, such as glasses, gloves, watches, clothing and shoes. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothes or accessories. Wearable devices are not only hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include full-featured, large-sized, and independent of smartphones to achieve complete or partial functions, such as smart watches or smart glasses, as well as those that only focus on a certain type of application function and need to be used in conjunction with other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.

[0077] It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and / or" is simply a description of an association between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " generally indicates that the related objects are in an "or" relationship.

[0078] The terms used in the embodiments of this application are intended only to explain the specific embodiments of this application and are not intended to limit this application. The terms "first," "second," "third," and "fourth," etc. in the specification and claims of this application and the accompanying drawings are used to distinguish different objects, not to describe a specific order. In addition, the terms "including" and "having," and any variations thereof, are intended to cover non-exclusive inclusions.

[0079] It should be understood that the "indication" mentioned in the embodiments of this application can be a direct indication, an indirect indication, or an indication of an association. For example, "A indicates B" can mean that A directly indicates B, for example, B can be obtained through A; it can also mean that A indirectly indicates B, for example, A indicates C, and B can be obtained through C; it can also mean that there is an association between A and B.

[0080] In the description of 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 being indicated, configuration and being configured, etc.

[0081] 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.

[0082] The following describes the technical content involved in this application:

[0083] Time Difference of Arrival (TDOA) positioning:

[0084] In the NR system, the supported positioning methods include the downlink time difference of arrival (DL-TDOA) positioning method, the uplink time difference of arrival (UL-TDOA) positioning method and the multi-round trip time (Multi-RTT) positioning method. This application mainly considers the TDOA positioning method.

[0085] The propagation time of a signal is directly related to the propagation distance. Therefore, the basic principle of the TDOA positioning method is to estimate the terminal's location based on the transmission time deviation of the signal sent by the terminal to multiple network devices and the known locations of multiple network devices. Here, the signal sent by the terminal reaches the network device, which can be understood as the signal sent by the terminal reaching multiple network nodes, and the network nodes can be transmitter receiver points (TRPs).

[0086] Schematically, the TDOA positioning method requires the establishment of a Radio Resource Control (RRC) connection between the terminal and multiple network devices to realize the transmission of measurement signals. Among them, the TDOA positioning method is based on the unidirectional transmission of measurement signals between the terminal and the TRP, that is, the terminal sends the signal and the TRP performs the measurement. Optionally, the terminal may send the same uplink reference signal or downlink reference signal to different TRPs, or different uplink reference signals or downlink reference signals, which depends on the configuration of the network.

[0087] The following takes the UL-TDOA positioning method as an example for introduction.

[0088] UL TDOA positioning requires time synchronization between the multiple network devices involved in positioning. When using uplink positioning, the terminal transmits an uplink Sounding Reference Signal (SRS). Each network device then measures the reference signal sent by the terminal to determine the path difference between the terminal's signals and different network devices. The intersection of two or more unrelated path differences forms a hyperbola, which is the positioning result.

[0089] In some implementation scenarios, if the two network devices are not time-synchronized, then the calculation result of the signal path difference between the terminal and the two network devices will contain a value that is proportional to the degree of time asynchrony between the two network devices, resulting in deviations in the positioning results.

[0090] Illustratively, when performing downlink positioning, the terminal receives a downlink positioning reference signal (PRS), and each network device also needs to send the PRS under the premise of time synchronization, so that the distance difference estimated by the terminal when measuring the PRS can reflect the actual situation.

[0091] Figure 1 shows a schematic diagram of a terminal performing positioning according to an exemplary embodiment of the present application, wherein d4-d1, d4-d3, d3-d2, and d2-d1 correspond to different hyperbolas, and the intersection of at least two hyperbolas is the terminal position.

[0092] The following is a detailed introduction to the TDOA positioning method:

[0093] Referring to Figure 1, positioning is performed between the terminal and four network nodes, which are respectively denoted as TRP 1, TRP 2, TRP 3 and TRP 4. The three-dimensional coordinates and receiving timing errors corresponding to the network node TRP i (i = 1, 2, ..., M) are denoted as (x i ,y i ,z i )and The three-dimensional coordinates corresponding to the terminal and the timing error of sending the uplink positioning signal to the network node TRP i are recorded as (x UE ,y UE ,z UE )and

[0094] Schematically, the distance between the network node TRP i and the terminal is recorded as d i , then TOA is calculated as follows (where c represents the speed of light):

[0095]

[0096] In actual scenarios, by using high-precision devices and appropriate deployment, network nodes can generally achieve relatively good synchronization accuracy. Even if there is a small synchronization error, it generally does not significantly affect the positioning accuracy. Therefore, in general, we can assume that Within a period of time, the timing error of the same terminal changes very little, so it can be considered that in the above formula,

[0097] Referring to the above formula, the basic principle of the TDOA positioning method is to take the difference between the two estimated TOAs to obtain the Assuming that TRP 1 is used as a reference (in this case, TRP 1 is called the reference TRP) to calculate the TOA differences corresponding to different TRPs, M-1 constraint equations can be obtained, as follows:

[0098]

[0099] Equivalently, if there is an error between the UE-side timing and the network-side timing, the above formula shows that this error is also eliminated. In order to obtain a relatively reliable solution for location information containing K (for example, 3) unknown variables, at least M ≥ K + 1 (for example, 4) network nodes are required.

[0100] Each equation in the equation group (2) can be seen as a hyperbola with TRP i and TRP 1 as the focus. Therefore, the physical meaning of the TDOA positioning method can be intuitively understood by referring to Figure 1:

[0101] Draw the corresponding hyperbola with each network node pair (TRP i, TRP 1) as the focus. The intersection of these hyperbolas is the terminal position estimated by the TDOA positioning method. i Due to factors such as , these hyperbolas usually do not intersect perfectly at a point, but rather intersect within a smaller range.

[0102] For example, using the UL-TDOA positioning method, the network device configures uplink SRS resources for the terminal through RRC signaling. The network node then performs measurements based on the uplink SRS signal sent by the terminal. The corresponding measurement is called the uplink relative time of arrival (UL RTOA) in the NR protocol.

[0103] The terminal's behavior is primarily to send SRS signals based on the configuration of network equipment. The corresponding measurements are performed by network nodes, and the terminal's position is estimated by the Location Management Function (LMF). When sending SRS signals, the terminal uses the serving cell's Timing Advance (TA) value.

[0104] The terminal can determine the downlink path loss based on the synchronization signal block (Synchronization Signal and PBCH Block, SSB) of the service cell configured by the network device, the SSB or PRS of the neighboring cell, and then determine the transmission power of the SRS signal. Among them, when the network device configures the SSB of the neighboring cell, the cell identification ID and SSB index of the neighboring cell can be configured. In addition, the terminal can also determine the spatial filter information sent by the SRS (or the beam information of the service cell, such as the SSB index associated with the SRS transmission or the channel state information measurement reference signal index or the SRS resource index, etc.) and the SSB or PRS of the neighboring cell based on the spatial filter information of the service cell configured by the network device (or the beam information of the service cell, such as the SSB index associated with the SRS transmission or the channel state information measurement reference signal index or the SRS resource index, etc.).

[0105] Schematically, UL RTOA is defined as the starting position of the subframe i containing the SRS received by the reception point (RP) relative to the RTOA reference time. The RTOA reference time is defined as T0+t SRS , T0 is the nominal starting time of SFN 0 provided by SFN initialization time; t SRS =(10n f +n sf )×10 -3 , n f and n sf are the system frame number and subframe number of the subframe containing the SRS, respectively. The network node may use multiple SRS resources to determine the starting position of the subframe i containing the SRS received by the RP.

[0106] Random access process and TA determination:

[0107] Schematically, the random access process refers to the process from the time the terminal sends a random access preamble to try to access the network to the time the basic signaling connection is established with the network. It can also be understood that the random access process is used to establish data communication between the terminal and the network side. In the NR system, two types of random access procedures are mainly supported, namely the four-step random access process (or type 1 random access process) and the two-step random access process (or type 1 random access process).

[0108] 1. Four-step random access process.

[0109] Schematically, the four-step random access process mainly includes the following steps:

[0110] Step 1: The terminal sends message 1 (msg1): random access preamble to the network device.

[0111] The terminal sends the selected random access preamble on the time-frequency resources of the selected physical random access channel (PRACH). Based on the random access preamble, the network device can estimate the uplink delay (Timing) and the grant (grant) size required for the terminal to transmit message 3.

[0112] Step 2: The network device sends message 2 (msg2): Random Access Response (RAR) to the terminal.

[0113] After sending message 1 (msg1), the terminal opens a random access response window (RAR window) and monitors the physical downlink control channel (PDCCH) within the random access response window. The PDCCH is scrambled with the random access radio network temporary identifier (RA-RNTI).

[0114] After successfully monitoring the RA-RNTI-scrambled PDCCH, the terminal can obtain the Physical Downlink Shared Channel (PDSCH) scheduled by the PDCCH, where the PDSCH includes the RAR.

[0115] The RAR includes: a backoff indicator (BI), which is used to indicate the backoff time for retransmitting message 1; a random access preamble identifier (RAPID), which is used to indicate the random access preamble code; a timing advance group (TAG), which is used to adjust the uplink timing; an uplink grant (UL grant), which is used to indicate the uplink resources for scheduling message 3; and a temporary cell-radio network temporary identity (Temporary C-RNTI), which is used to scramble the PDCCH (initial access) of message 4.

[0116] FIG2 is a schematic diagram showing an information block of a RAR in a four-step random access process provided by an exemplary embodiment of the present application.

[0117] Step 3: The terminal sends message 3 (msg3) to the network device: scheduling transmission.

[0118] Message 3 is primarily used to notify the network device of the event that triggered the random access procedure. For example, if the event is the initial random access procedure, Message 3 will carry the UE ID and establishment cause; if the event is RRC reestablishment, it will carry the connected UE ID and establishment cause.

[0119] Step 4: The network device sends message 4 (msg4): contention resolution message to the terminal. Message 4 is used for conflict resolution.

[0120] Step 5: The terminal sends message 5 (msg5) to the network device: connection establishment is complete (complete).

[0121] Message 5 is mainly used to notify the network device that the random access connection establishment is completed.

[0122] 2. Two-step random access process.

[0123] Schematically, in a contention-based random access process, a 4-step random access process can be merged into a 2-step random access process. The merged 2-step random access process includes message A and message B, and the relevant steps include:

[0124] Step 1: The terminal sends message A (msgA) to the network device.

[0125] Step 2: After receiving message A sent by the terminal, the network device sends message B (msgB) to the terminal.

[0126] Optionally, message A includes the contents of message 1 and message 3, that is, message A includes: a random access preamble and a UE ID, where the UE ID can be one of: a C-RNTI, a temporary C-RNTI, a RA-RNTI, and a non-access stratum (NAS) UE ID. Optionally, message B includes the contents of message 2 and message 4, that is, message B includes: a random access response and a contention resolution message.

[0127] FIG3 shows a schematic diagram of an RAR information block in a two-step random access process provided by an exemplary embodiment of the present application.

[0128] Schematically, in both random access processes, the TA command (Timing Advance Command) contained in the RAR information block is used to synchronize the clocks of multiple terminals when sending uplink information. Since different terminals are at different distances from the network device, if the terminals send uplink information to the network device at the same time, the time it takes for the uplink information to arrive at the network device will be different. Based on this, the network device needs to estimate the distance between the terminal and the network device based on the random access preamble sent by the terminal, and then send the TA command to the terminal, so that the terminal can send the uplink information at different times in advance, so that multiple network devices can receive it simultaneously.

[0129] It can be seen that multiple network devices can use the preamble code to perform distance estimation from the terminal to the network device.

[0130] SRS multi-user orthogonal transmission:

[0131] The SRS configurations of different users can be separated in the time domain, frequency domain or code domain to achieve zero interference between them.

[0132] In the time domain, the SRS time slots of different users may have different occurrence periods, slot offsets, and symbols occupied in the same time slot.

[0133] In the frequency domain, different users' SRSs can apply different offsets (comb offsets), that is, different users' SRS configurations can alternately occupy different frequency positions on the same symbol, and frequency hopping can also be used to avoid collisions.

[0134] FIG4 and FIG5 respectively show frequency domain schematic diagrams of two types of sounding reference signals.

[0135] Based on the above content, the present application provides a wireless positioning method, in which the terminal sends signals to multiple network devices after performing a random access process with a first network device to achieve wireless positioning of the terminal in an idle state.

[0136] FIG6 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application. The method is executed by a terminal and includes the following steps:

[0137] Step 102: After performing a random access procedure with the first network device, a signal is sent to the first network device and at least one second network device.

[0138] In some embodiments, the second network device is a network device that does not perform a random access procedure with the terminal.

[0139] Optionally, the signal sent by the terminal to the first network device and at least one second network device is used for the terminal to achieve positioning. The signal may also be referred to as one of a positioning signal, a reference signal, positioning information, positioning reference information, and a positioning reference signal.

[0140] In some embodiments, the signals sent by the terminal to the first network device and at least one second network device are used by the terminal to implement idle state positioning. Idle state positioning indicates that, when not in a connected state, the terminal implements positioning by sending signals to the first network device and at least one second network device. Optionally, the terminal implements positioning using the TDOA positioning method. For a description of the TDOA positioning method, please refer to the previous section and will not be repeated here.

[0141] In some embodiments, the signal used for achieving positioning involved in this application is configured by the first network device during random access with the terminal. Exemplarily, the first network device sends configuration information for the signal used for achieving positioning to the terminal via Message 4 or Message B. Optionally, the signal used for achieving positioning includes at least one of the following: a terminal-specific random access preamble; an SRS.

[0142] Optionally, when the terminal sends a signal for achieving positioning to the first network device and at least one second network device, the TA amount obtained during the random access process is not used.

[0143] After performing a random access procedure with a first network device, the terminal may send a signal for achieving positioning to the first network device and at least one second network device. Subsequently, the first network device and the second network device may send positioning measurement result information (Location measurement result reporting) obtained based on the signal sent by the terminal to a Location Management Function (LMF), so that the LMF can calculate the terminal's position and thereby determine the terminal's position.

[0144] The position calculation process can refer to the relevant description of the aforementioned TDOA positioning method.

[0145] It should be understood that the random access process involved in the embodiment of the present application can be a four-step random access process or a two-step random access process. The relevant description of the random access process can be referred to the above content and will not be repeated here.

[0146] During a random access process between a terminal and a first network device, the first network device may configure the terminal with configuration information for a signal used for positioning, so that the terminal determines the signal to be used. Optionally, the terminal receives Message 4 and Message B sent by the first network device, where Message 4 or Message B carries the configuration information for the signal used for positioning.

[0147] It should be understood that the random access process may succeed (i.e., complete the random access process) or fail (i.e., not complete the random access process). In the embodiment of the present application, regardless of whether the random access process is completed, after executing the random access process, the terminal sends a signal for achieving positioning to the first network device and at least one second network device.

[0148] Optionally, message 4 or message B is the first RRC signaling that causes the terminal to enter a connected state; or, message 4 or message B is carried in the first RRC signaling; or, message 4 or message B is the second RRC signaling that does not cause the terminal to enter a connected state; or, message 4 or message B is carried in the second RRC signaling.

[0149] In some embodiments, if the terminal completes the random access procedure with the first network device, Message 4 or Message B is a first RRC signaling, or is carried in the first RRC signaling. In other embodiments, if the terminal does not complete the random access procedure with the first network device, Message 4 or Message B is a second RRC signaling, or is carried in the second RRC signaling. Optionally, the second RRC signaling is an RRC Connection Reject signaling.

[0150] Exemplarily, message 4 or message B is RRC signaling that does not cause the terminal to enter a connected state; or, message 4 or message B is carried in RRC signaling, and the RRC signaling is RRC connection rejection signaling.

[0151] In some embodiments, a terminal and a first network device perform two-step random access. The terminal sends a message A to the network device. Message A carries positioning indication information, where the positioning indication information indicates that the purpose of the random access is positioning or idle-state positioning. Alternatively, the random access preamble used in message A indicates that the purpose of the random access is positioning or idle-state positioning. Subsequently, the first network device configures the terminal with signal configuration information for implementing positioning via message B.

[0152] In other embodiments, the terminal and the first network device perform four-step random access. The terminal sends a message 1 to the network device, where the random access preamble used in message 1 indicates that the purpose of the random access is positioning or idle-state positioning. Alternatively, the terminal sends a message 3 to the network device, where message 3 carries positioning indication information, where the positioning indication information indicates that the purpose of the random access is positioning or idle-state positioning. Subsequently, the first network device configures the terminal with signal configuration information for implementing positioning via message 4.

[0153] Optionally, before performing a random access process with the first network device, the terminal receives a paging message from an access and mobility management function (AMF), where the paging message is used to trigger the terminal to perform positioning based on a signal.

[0154] The paging message is forwarded by the first network device to trigger the terminal to perform positioning or idle state positioning. For example, the AMF sends the paging message to the first network device, and the first network device sends the paging message to the terminal. After the terminal receives the paging message, the terminal performs a two-step random access procedure or a four-step random access procedure with the first network device, and then sends a positioning signal to the first network device and at least one second network device.

[0155] Optionally, the first network device sends a broadcast message configured with random access resources. Optionally, the random access resources include a random access preamble and / or time-frequency domain resources. After receiving the random access resources, the terminal may select the resources to be used according to actual needs. For example, after determining that positioning needs to be performed, the terminal may select a dedicated random access preamble for achieving positioning to perform a random access process; or, the terminal may use random access time-frequency domain resources indicating that the purpose of random access is positioning to send message A or message 1 in the random access process.

[0156] It should be understood that the terminal may perform positioning or idle-state positioning actively or passively.

[0157] For example, the terminal actively initiates positioning or idle state positioning.

[0158] In some embodiments, the terminal determines that positioning needs to be performed. After receiving a broadcast message sent by the first network device, the terminal selects a dedicated random access preamble for positioning and performs a random access procedure. The preamble is carried in Message 1 or Message A to indicate that the purpose of this random access is positioning or idle state positioning, so that the first network device configures the terminal with configuration information of a signal for positioning.

[0159] In other embodiments, when the terminal determines that positioning needs to be performed, during a random access procedure with the first network device, the terminal carries a random access preamble in Message 1 or Message A that does not indicate that the purpose of this random access is positioning or idle-state positioning, but carries positioning indication information in Message 3 or Message A that indicates that the purpose of this random access is positioning or idle-state positioning, thereby causing the first network device to configure the terminal with configuration information of a signal for implementing positioning.

[0160] For another example, the terminal passively initiates positioning or idle state positioning.

[0161] In some embodiments, a terminal receives a paging message from an AMF, which triggers the terminal to perform signal-based positioning. Subsequently, when performing a random access procedure with a first network device, the terminal may interact with the first network device via message 1, message 3, or message A, so that the first network device configures the terminal with signal configuration information for performing positioning.

[0162] In summary, in the wireless positioning method provided in the embodiments of the present application, after performing a random access procedure with a first network device, the terminal sends a signal for implementing positioning to the first network device and at least one second network device. Based on this, the terminal and multiple network devices do not need to establish an RRC connection to implement wireless positioning in the idle state.

[0163] FIG7 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application. The method is executed by a first network device and includes the following steps:

[0164] Step 202: Receive a signal sent by the terminal.

[0165] The signal is sent by the terminal after performing a random access process with the first network device.

[0166] Optionally, the signal sent by the terminal to the first network device is used for the terminal to achieve positioning. The signal may also be referred to as one of a positioning signal, a reference signal, positioning information, positioning reference information, and a positioning reference signal.

[0167] In some embodiments, the signal sent by the terminal to the first network device is used for the terminal to achieve idle state positioning. Wherein, idle state positioning is used to indicate that when not in a connected state, the terminal achieves positioning by sending signals to the first network device and at least one second network device.

[0168] It should be understood that the terminal may perform positioning or idle-state positioning actively or passively, and the related descriptions may refer to the above content and will not be repeated here.

[0169] In some embodiments, the signal used for achieving positioning involved in this application is configured by the first network device during random access with the terminal. Exemplarily, the first network device sends configuration information for the signal used for achieving positioning to the terminal via Message 4 or Message B. Optionally, the signal used for achieving positioning includes at least one of the following: a terminal-specific random access preamble; an SRS.

[0170] In the embodiment of the present application, regardless of whether the random access process is completed, after executing the random access process, the terminal sends a signal for achieving positioning to the first network device and at least one second network device.

[0171] Optionally, message 4 or message B is the first RRC signaling that causes the terminal to enter a connected state; or, message 4 or message B is carried in the first RRC signaling; or, message 4 or message B is the second RRC signaling that does not cause the terminal to enter a connected state; or, message 4 or message B is carried in the second RRC signaling.

[0172] Optionally, the second RRC signaling is RRC connection rejection signaling.

[0173] Optionally, when the terminal sends a signal for achieving positioning to the first network device, the TA amount obtained during the random access process is not used.

[0174] With reference to the foregoing, after performing a random access procedure with a first network device, the terminal may send a signal for achieving positioning to the first network device and at least one second network device. Subsequently, the first and second network devices may send positioning measurement result information obtained based on the signal sent by the terminal to the LMF, so that the LMF can calculate the terminal's position and thereby determine the terminal's position.

[0175] Optionally, the first network device sends positioning measurement result information to the LMF, and the positioning information is used by the LAM to perform terminal position calculation.

[0176] The position calculation process can refer to the relevant description of the aforementioned TDOA positioning method.

[0177] It should be understood that the random access process involved in the embodiment of the present application can be a four-step random access process or a two-step random access process. For related descriptions, please refer to the above content and will not be repeated here.

[0178] During a random access process between a terminal and a first network device, the first network device may configure the terminal with configuration information for a signal used for positioning, so that the terminal determines the signal to be used. Optionally, the terminal receives Message 4 and Message B sent by the first network device, where Message 4 or Message B carries the configuration information for the signal used for positioning.

[0179] For the description of how the terminal obtains configuration information based on the two-step random access process or the four-step random access process, please refer to the above content and will not be repeated here.

[0180] In some embodiments, the first network device forwards a paging message from the AMF to the terminal, where the paging message is used to trigger the terminal to perform positioning based on the signal. For a description of the paging message, please refer to the aforementioned content and will not be repeated here.

[0181] In some embodiments, a first network device transmits a broadcast message configured with random access resources. Upon receiving the random access resources, a terminal may select the resources to use based on actual needs. For example, upon determining that positioning is required, the terminal may select a dedicated random access preamble for positioning to perform a random access procedure. Alternatively, the terminal may transmit Message A or Message 1 during the random access procedure using random access time-frequency domain resources indicating that the random access purpose is positioning.

[0182] Optionally, the first network device sends a broadcast message, where the broadcast message is used to configure the terminal to determine random access resources used for performing positioning. Optionally, the random access resources include a random access preamble and / or time-frequency domain resources.

[0183] In some embodiments, the first network device also needs to send configuration information of a signal for implementing positioning to the LMF.

[0184] In some embodiments, to achieve positioning, the first network device may also send a positioning message request to at least one second network device. The positioning message request carries configuration information of the signal used to achieve positioning, so that the second network device can identify the specific signal sent by the terminal.

[0185] In summary, in the wireless positioning method provided in the embodiments of the present application, after performing a random access procedure with a first network device, the terminal sends a signal for implementing positioning to the first network device and at least one second network device. Based on this, the terminal can implement wireless positioning in the idle state without establishing an RRC connection with multiple network devices.

[0186] FIG8 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application. The method is performed by a second network device and includes the following steps:

[0187] Step 302: Receive a signal sent by the terminal.

[0188] Illustratively, the signal is sent by the terminal after performing a random access procedure with the first network device.

[0189] In some embodiments, the second network device is a network device that does not perform a random access procedure with the terminal.

[0190] Optionally, the signal sent by the terminal to the second network device is used by the terminal to achieve positioning. The signal may also be referred to as one of a positioning signal, a reference signal, positioning information, positioning reference information, and a positioning reference signal.

[0191] In some embodiments, the signal sent by the terminal to the second network device is used for the terminal to achieve idle state positioning. Wherein, idle state positioning is used to indicate that when not in a connected state, the terminal achieves positioning by sending signals to the first network device and at least one second network device.

[0192] It should be understood that the terminal may perform positioning or idle-state positioning actively or passively, and the related descriptions may refer to the above content and will not be repeated here.

[0193] In some embodiments, the signal used for achieving positioning involved in this application is configured by the first network device during random access with the terminal. Exemplarily, the first network device sends configuration information for the signal used for achieving positioning to the terminal via Message 4 or Message B. Optionally, the signal used for achieving positioning includes at least one of the following: a terminal-specific random access preamble; an SRS.

[0194] Optionally, when the terminal sends a signal for achieving positioning to the second network device, the TA amount obtained during the random access process is not used.

[0195] With reference to the foregoing, after performing a random access procedure with a first network device, the terminal may send a signal for achieving positioning to the first network device and at least one second network device. Subsequently, the first and second network devices may send positioning measurement result information obtained based on the signal sent by the terminal to the LMF, so that the LMF can calculate the terminal's position and thereby determine the terminal's position.

[0196] Optionally, the second network device sends positioning measurement result information to the LMF, and the positioning information is used by the LAM to perform terminal position solution.

[0197] The position calculation process can refer to the relevant description of the aforementioned TDOA positioning method.

[0198] It should be understood that the random access process involved in the embodiment of the present application can be a four-step random access process or a two-step random access process. For related descriptions, please refer to the above content and will not be repeated here.

[0199] With reference to the foregoing, in some embodiments, the first network device may also need to send configuration information for the signal used to implement positioning to the LMF. Based on this, the LMF may send the configuration information for the signal used to implement positioning to at least one second network device, so that the second network device can recognize the specific signal sent by the terminal.

[0200] In other embodiments, the first network device may further carry configuration information of a signal used to implement positioning in a positioning message request, and send the positioning message request to at least one second network device through an Xn interface.

[0201] In summary, in the wireless positioning method provided in the embodiments of the present application, after performing a random access procedure with a first network device, the terminal sends a signal for implementing positioning to the first network device and at least one second network device. Based on this, the terminal and multiple network devices do not need to establish an RRC connection to implement wireless positioning in the idle state.

[0202] FIG9 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application. The method is executed by the AMF and includes the following steps:

[0203] Step 402: Send a paging message to the terminal.

[0204] Illustratively, the paging message is used to trigger the terminal to perform positioning based on the signal.

[0205] Optionally, the signal sent by the terminal is used by the terminal to achieve positioning. The signal may also be referred to as a positioning signal, a reference signal, positioning information, positioning reference information, or a positioning reference signal.

[0206] In some embodiments, the terminal sends signals to the first network device and the at least one second network device to implement idle state positioning of the terminal. Idle state positioning indicates that, when not in a connected state, the terminal implements positioning by sending signals to the first network device and the at least one second network device.

[0207] In some embodiments, the signal used for achieving positioning involved in this application is configured by the first network device during random access with the terminal. Exemplarily, the first network device sends configuration information for the signal used for achieving positioning to the terminal via Message 4 or Message B. Optionally, the signal used for achieving positioning includes at least one of the following: a terminal-specific random access preamble; an SRS.

[0208] With reference to the foregoing, the terminal may initiate positioning or idle-state positioning actively or passively. In some embodiments, the terminal may initiate positioning or idle-state positioning passively.

[0209] Before performing a random access procedure with the first network device, the terminal receives a paging message from the AMF, where the paging message is used to trigger the terminal to perform positioning based on a signal.

[0210] The paging message is forwarded by the first network device to trigger the terminal to perform positioning or idle state positioning. Exemplarily, the AMF sends the paging message to the first network device, and the first network device sends the paging message to the terminal. After the terminal receives the paging message, the terminal can interact with the first network device through message 1 or message 3 or message A, so that the first network device configures the terminal with configuration information of the signal for achieving positioning. After performing a two-step random access process or a four-step random access process with the first network device, the terminal can send the signal for positioning to the first network device and at least one second network device to achieve positioning.

[0211] Optionally, the paging cause (pagingCause) in the paging record (pagingRecord) is positioning (positioning), so that the terminal passively initiates positioning.

[0212] In summary, in the wireless positioning method provided in the embodiments of the present application, sending a paging message via the AMF can trigger the terminal to perform positioning based on the signal. After performing a random access procedure with the first network device, the terminal sends a signal for achieving positioning to the first network device and at least one second network device to achieve positioning.

[0213] FIG10 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application. The method is executed by the LMF and includes the following steps:

[0214] Step 502: Receive configuration information of a signal sent by a first network device.

[0215] Illustratively, the signal is configured by the first network device for the terminal.

[0216] Optionally, the signal sent by the terminal is used for the terminal to achieve positioning after performing a random access process with the first network device. The signal can also be referred to as one of a positioning signal, a reference signal, positioning information, positioning reference information, and a positioning reference signal.

[0217] In some embodiments, the terminal sends signals to the first network device and the at least one second network device to implement idle state positioning of the terminal. Idle state positioning indicates that, when not in a connected state, the terminal implements positioning by sending signals to the first network device and the at least one second network device.

[0218] In some embodiments, the signal used for achieving positioning involved in this application is configured by the first network device during random access with the terminal. Exemplarily, the first network device sends configuration information for the signal used for achieving positioning to the terminal via Message 4 or Message B. Optionally, the signal used for achieving positioning includes at least one of the following: a terminal-specific random access preamble; an SRS.

[0219] It should be understood that the terminal may perform positioning or idle-state positioning actively or passively, and the related descriptions may refer to the above content and will not be repeated here.

[0220] With reference to the foregoing, in some embodiments, the LMF receives configuration information of a signal sent from a first network device. Optionally, the LMF sends the configuration information of the signal to at least one second network device, so that the at least one second network device can recognize the specific signal sent by the terminal.

[0221] Optionally, the configuration information of the signal is sent via New Radio Positioning Protocol (NRPPa) signaling. Exemplarily, the configuration information of the model is sent to the at least one second network device via a Location Information Request on an NRPPa interface.

[0222] Optionally, to determine the terminal's location, the LMF receives positioning measurement result information sent by the first network device and / or at least one second network device; and performs terminal position solution based on the positioning measurement result information. The position solution process can be referred to the description of the aforementioned TDOA positioning method.

[0223] To sum up, in the wireless positioning method provided in the embodiment of the present application, the LMF receives the configuration information of the signal sent by the first network device, so as to identify the positioning measurement result information obtained by the first network device and at least one second network device based on the signal, thereby realizing the position solution of the terminal, so as to realize the positioning of the terminal and determine the position of the terminal.

[0224] FIG11 is a flowchart of a wireless positioning method provided by an exemplary embodiment of the present application, the method comprising the following steps:

[0225] Step 601: AMF sends a paging message to the terminal.

[0226] Illustratively, the paging message is used to trigger the terminal to perform positioning based on the signal.

[0227] Optionally, the signal sent by the terminal is used by the terminal to achieve positioning. The signal may also be referred to as a positioning signal, a reference signal, positioning information, positioning reference information, or a positioning reference signal.

[0228] In some embodiments, the terminal sends signals to the first network device and the at least one second network device to implement idle state positioning of the terminal. Idle state positioning indicates that, when not in a connected state, the terminal implements positioning by sending signals to the first network device and the at least one second network device.

[0229] In some embodiments, the signal used for achieving positioning involved in this application is configured by the first network device during random access with the terminal. Exemplarily, the first network device sends configuration information for the signal used for achieving positioning to the terminal via Message 4 or Message B. Optionally, the signal used for achieving positioning includes at least one of the following: a terminal-specific random access preamble; an SRS.

[0230] With reference to the above content, the terminal may initiate positioning or idle-state positioning actively or passively. In the embodiment of the present application, the terminal may initiate positioning or idle-state positioning passively.

[0231] Before performing a random access procedure with the first network device, the terminal receives a paging message from the AMF, which is used to trigger the terminal to perform positioning based on the signal. Optionally, the paging reason in the paging record is positioning, so that the terminal passively initiates positioning.

[0232] The paging message is forwarded by the first network device to trigger the terminal to perform positioning or idle positioning. Exemplarily, the AMF sends the paging message to the first network device, and the first network device sends the paging message to the terminal.

[0233] Step 602: After performing a random access procedure with a first network device, the terminal sends a signal to the first network device and at least one second network device.

[0234] In some embodiments, the second network device is a network device that does not perform a random access procedure with the terminal.

[0235] After receiving the paging message, the terminal may interact with the first network device via Message 1, Message 3, or Message A, so that the first network device configures the terminal with configuration information for a signal used to implement positioning. Subsequently, after performing a random access procedure with the first network device, the terminal may send a signal used for positioning to the first network device and at least one second network device.

[0236] Among them, the relevant description about the signal, the terminal and the first network device performing the random access process can be referred to the above content and will not be repeated here.

[0237] Step 603: The first network device sends configuration information of a signal to the LMF.

[0238] The signal is configured by the first network device for the terminal. For the relevant description of the signal, please refer to the above content and will not be repeated here.

[0239] After receiving the configuration information of the signal, LMF can identify the positioning measurement result information obtained by the first network device and the second network device based on the specific signal, thereby realizing the positioning of the terminal and determining the location of the terminal through position solution.

[0240] It should be understood that in the above embodiments, the steps on the terminal side, the first network device side, the second network device side, the AMF side, and the LMF side can all be implemented separately as an embodiment of the wireless positioning method. For specific explanations, please refer to the above content and will not be repeated here.

[0241] In summary, in the wireless positioning method provided in the embodiments of the present application, after performing a random access procedure with a first network device, the terminal sends a signal for implementing positioning to the first network device and at least one second network device. Based on this, the terminal and multiple network devices do not need to establish an RRC connection to implement wireless positioning in the idle state.

[0242] With reference to the foregoing, the wireless positioning methods provided in the above-mentioned multiple embodiments are implemented based on the terminal performing a random access process with a first network device and not performing a random access process with at least one second network device. Based on this, it can also be understood that the present application provides an idle state positioning method, in which the terminal only needs to perform a random access process with a first network device, and then sends the signal configured in the random access process for achieving positioning to multiple network devices to achieve positioning. In this case, the terminal does not establish an RRC connection with at least one of the multiple network devices.

[0243] It should be understood that the above multiple embodiments are only exemplary embodiments provided by the present application and do not limit the present application. For example, in some embodiments, the AMF does not send a paging message, or the terminal does not receive a paging message sent by the AMF. The terminal can actively initiate positioning according to actual needs, and inform the first network device during the random access process that the access purpose is positioning, so that the first network device configures the terminal with the configuration information of the signal for achieving positioning. Subsequently, after performing the random access process, the terminal sends a signal for achieving positioning to the first network device and at least one second network device, so that the first network device and at least one second network device can report the positioning measurement result information to the LMF, so that the LMF can perform the terminal's position solution.

[0244] According to the above content, the random access process includes a two-step random access process and a four-step random access process. The following will be described according to different random access processes:

[0245] 1. Wireless positioning method based on two-step random access.

[0246] FIG12 shows a flowchart of a wireless positioning method based on two-step random access provided by an exemplary embodiment of the present application. The method includes the following steps:

[0247] Step 701: The terminal sends message A to the first network device.

[0248] Illustratively, the random access preamble used in message A is used to indicate that the purpose of the random access is positioning, or message A carries positioning indication information, and the positioning indication information is used to indicate that the purpose of the random access is positioning.

[0249] Among them, the relevant descriptions about positioning and positioning indication information can be referred to the above content and will not be repeated here.

[0250] With reference to the above content, the purpose of random access may also be idle state positioning.

[0251] It should be understood that the random access preamble used in message A can be determined based on the random access resources broadcast by the first network device. Exemplarily, the random access resources include a random access preamble used to indicate that the purpose of the random access is positioning. When positioning needs to be performed, the terminal selects this specific random access preamble from the random access resources and carries it in message A for transmission, so that the first network device can indirectly determine, based on the preamble, whether the purpose of this random access is positioning or idle state positioning; alternatively, when positioning needs to be performed, the terminal sends message A using random access time-frequency domain resources indicating that the random access purpose is positioning.

[0252] Alternatively, the terminal may also select other random access preamble codes that do not indicate that the random access purpose is positioning. In this case, positioning indication information needs to be carried in message A to clearly inform the first network device of the purpose of this random access.

[0253] In some embodiments, if a paging message is received from an AMF, and the paging message is used to trigger the terminal to perform positioning based on the signal, the terminal may use a specific random access preamble code, or carry positioning indication information in message A. In other embodiments, if the terminal actively determines that positioning needs to be performed, the terminal may use a specific random access preamble code, or carry positioning indication information in message A. In other embodiments, regardless of whether the terminal actively or passively determines that positioning needs to be performed, the terminal may use a specific random access preamble code and carry positioning indication information in message A.

[0254] Step 702: The first network device sends message B to the terminal.

[0255] Illustratively, message B carries configuration information of the signal.

[0256] After receiving Message A, the first network device can determine, based on the specific random access preamble or positioning indication information, whether the purpose of this random access is positioning or idle-state positioning. Subsequently, the first network device configures the terminal with configuration information for the signal used for positioning and sends it to the terminal in Message B, allowing the terminal to determine the signal used for positioning.

[0257] Optionally, message B is a first RRC signaling that causes the terminal to enter a connected state; or, message B is carried in the first RRC signaling; or, message B is a second RRC signaling that does not cause the terminal to enter a connected state; or, message B is carried in the second RRC signaling. Optionally, the second RRC signaling is an RRC connection rejection signaling.

[0258] Step 703: After performing a random access procedure with the first network device, the terminal sends a signal to the first network device and at least one second network device.

[0259] For the relevant description of the signal, please refer to the above content and will not be repeated here.

[0260] With reference to the foregoing, in an embodiment of the present application, regardless of whether the random access process is completed, after executing the random access process, the terminal sends a signal for achieving positioning to the first network device and at least one second network device.

[0261] This step is the same as step 202 and can be used as a reference and will not be described again.

[0262] It should be understood that in the above embodiments, the steps on the terminal side, the first network device side, and the second network device side can all be independently implemented as part or all of the steps in an embodiment of the wireless positioning method. For specific explanations, please refer to the above content and will not be repeated here.

[0263] 2. Wireless positioning method based on four-step random access.

[0264] FIG13 shows a flowchart of a wireless positioning method based on four-step random access provided by an exemplary embodiment of the present application. The method includes the following steps:

[0265] Step 801: The terminal sends message 1 to the first network device.

[0266] Illustratively, the random access preamble used in message 1 is used to indicate that the purpose of random access is positioning.

[0267] For the description of positioning, please refer to the above content and will not be repeated here.

[0268] With reference to the above content, the purpose of random access may also be idle state positioning.

[0269] It should be understood that the random access preamble used in Message 1 can be determined based on the random access resources broadcast by the first network device. Exemplarily, the random access resources include a random access preamble used to indicate that the purpose of the random access is positioning. When positioning needs to be performed, the terminal selects the specific random access preamble from the random access resources and carries it in Message 1 for transmission, so that the first network device can indirectly determine, based on the preamble, whether the purpose of this random access is positioning or idle state positioning; alternatively, when positioning needs to be performed, the terminal uses the random access time-frequency domain resources indicating that the random access purpose is positioning to send Message 1.

[0270] In some embodiments, if a paging message is received from an AMF, and the paging message is used to trigger the terminal to perform signal-based positioning, the terminal may use a specific random access preamble. In other embodiments, if the terminal proactively determines that positioning needs to be performed, the terminal may use a specific random access preamble.

[0271] Step 802: The first network device sends message 2 to the terminal.

[0272] After sending Message 1, the terminal opens a random access response window and monitors the PDCCH within the random access response window. After successfully monitoring the RA-RNTI-scrambled PDCCH, the terminal can obtain the PDSCH scheduled by the PDCCH, which contains the RAR.

[0273] Among them, the relevant description of RAR can be found in the above content and will not be repeated here.

[0274] Step 803: The terminal sends message 3 to the first network device.

[0275] Illustratively, message 3 carries positioning indication information, and the positioning indication information is used to indicate that the purpose of random access is positioning.

[0276] Among them, the relevant description of the positioning indication information can be referred to the above content and will not be repeated here.

[0277] With reference to the above content, the purpose of random access may also be idle state positioning.

[0278] In an optional implementation scenario, in step 801, the random access preamble used in message 1 does not indicate that the purpose of random access is positioning. In this case, positioning indication information is carried in message 3 to clearly inform the first network device of the purpose of this random access.

[0279] In some embodiments, if a paging message is received from an AMF, and the paging message is used to trigger the terminal to perform positioning based on a signal, the terminal may use a specific random access preamble in message 1, or carry positioning indication information in message 3. In other embodiments, if the terminal actively determines that positioning needs to be performed, the terminal may use a specific random access preamble in message 1, or carry positioning indication information in message 3. In other embodiments, regardless of whether the terminal actively or passively determines that positioning needs to be performed, the terminal may use a specific random access preamble in message 1 and carry positioning indication information in message 3.

[0280] Step 804: The first network device sends message 4 to the terminal.

[0281] Illustratively, message 4 carries signal configuration information.

[0282] After receiving Message 1 or 3, the first network device can determine, based on the specific random access preamble or positioning indication information, whether the purpose of this random access is positioning or idle-state positioning. Subsequently, the first network device configures the terminal with configuration information for the signal used for positioning and sends it to the terminal in Message 4, allowing the terminal to determine the signal used for positioning.

[0283] Optionally, message 4 is a first RRC signaling that causes the terminal to enter a connected state; or, message 4 is carried in the first RRC signaling; message 4 is a second RRC signaling that does not cause the terminal to enter a connected state; or, message 4 is carried in the second RRC signaling. Optionally, the second RRC signaling is an RRC connection rejection signaling.

[0284] Step 805: After performing a random access procedure with the first network device, the terminal sends a signal to the first network device and at least one second network device.

[0285] For the relevant description of the signal, please refer to the above content and will not be repeated here.

[0286] With reference to the foregoing, in an embodiment of the present application, regardless of whether the random access process is completed, after executing the random access process, the terminal sends a signal for achieving positioning to the first network device and at least one second network device.

[0287] This step is the same as step 202 and can be used as a reference and will not be described again.

[0288] It should be understood that in the above embodiments, the steps on the terminal side, the first network device side, and the second network device side can all be independently implemented as part or all of the steps in an embodiment of the wireless positioning method. For specific explanations, please refer to the above content and will not be repeated here.

[0289] In summary, the above two embodiments respectively provide implementation methods of wireless positioning methods based on two different random access procedures. In different random access procedures, the terminal can directly or indirectly inform the first network device of the purpose of random access in different ways, so that the first network device can configure specific signal configuration information for the terminal. Based on this, after performing the random access procedure with the first network device, the terminal can send a signal for achieving positioning to the first network device and at least one second network device to achieve wireless positioning in the idle state.

[0290] 11 and 14 show a flow chart of a wireless positioning method provided by an exemplary embodiment of the present application. The method may further optionally include at least one of the following steps:

[0291] Step 604: The first network device sends a broadcast message.

[0292] Illustratively, the broadcast message is used to configure the terminal to determine the random access resources used for performing positioning. Optionally, the random access resources include a random access preamble and / or time-frequency domain resources.

[0293] With reference to the foregoing, the broadcast message sent by the first network device is configured with random access resources. After receiving the random access resources, the terminal can select the resources to be used to perform the random access process according to actual needs. For example, after the terminal determines that positioning needs to be performed, it can select a dedicated random access preamble code for positioning. For another example, after the terminal receives a paging message from the AMF and needs to passively perform positioning, it can select a dedicated random access preamble code for positioning.

[0294] Step 604 and step 601 may be executed simultaneously, sequentially, or out of order.

[0295] Step 605: The first network device and at least one second network device send positioning measurement result information to the LMF.

[0296] Schematically, the positioning measurement result information is used by LMF to perform terminal position solution.

[0297] Step 606: The LMF performs terminal position calculation based on the positioning measurement result information.

[0298] The positioning measurement result information is determined according to a signal sent by the terminal for achieving positioning.

[0299] After receiving the signal sent by the terminal, the first network device and the at least one second network device may obtain positioning measurement result information based on the signal sent by the terminal. Subsequently, the first network device and the at least one second network device transmit the positioning measurement result information to the LMF, so that the LMF can calculate the terminal's position and thereby determine the terminal's position.

[0300] The position calculation process can refer to the relevant description of the aforementioned TDOA positioning method.

[0301] It should be understood that in the above embodiments, the steps on the terminal side, the first network device side, the second network device side, the AMF side, and the LMF side can all be implemented separately as an embodiment of the wireless positioning method. For specific explanations, please refer to the above content and will not be repeated here.

[0302] In summary, in the wireless positioning method provided in the embodiments of the present application, after performing a random access procedure with a first network device, the terminal sends a signal for implementing positioning to the first network device and at least one second network device. Based on this, the terminal and multiple network devices do not need to establish an RRC connection to implement wireless positioning in the idle state.

[0303] It should be understood that the above-mentioned multiple embodiments are all exemplary embodiments provided by this application and do not limit this application. Other combinations that can achieve terminal positioning based on the random access process are included in the scope of protection of this application and will not be listed one by one.

[0304] Taking the four-step random access process as an example, the steps of different execution entities in the wireless positioning method are as follows:

[0305] (1) Terminal side:

[0306] 1. Use the random access resources (preamble or time domain resources) configured by the first network device through the broadcast message to start the random access process, that is, send message 1 to the first network device;

[0307] The random access resource includes a random access preamble code for indicating that the purpose of the random access is positioning or idle state positioning, and the preamble code is used in message 1.

[0308] 2. Receive message 2 and send message 3;

[0309] Message 3 carries positioning indication information, which is used to indicate that the purpose of random access is positioning. It should be understood that either the preamble used in message 1 or the positioning indication information carried in message 3 can be used.

[0310] 3. Receive message 4 and determine whether the competition has been won;

[0311] Message 4 carries configuration information of a signal used to implement positioning, which may be a terminal-specific random access preamble or SRS. Exemplarily, message 4 carries configuration information of a terminal-specific random access resource (preamble or time domain resource) or SRS.

[0312] 4. After the terminal determines that the contention is won (ie, the random access process is completed), the terminal uses the random access resources obtained in step 3 to send a preamble again, or sends an SRS for positioning.

[0313] Optionally, when sending the preamble, the terminal does not use the TA amount obtained during the random access process.

[0314] (2) First network device side:

[0315] 1. Sending a broadcast message, wherein the broadcast message is configured with a random access resource for positioning (i.e., a random access resource for indicating that the random access purpose is positioning);

[0316] 2. After learning from Message 3 or Message 1 that the purpose of random access is positioning or idle state positioning, Message 4 carries configuration information of the signal used to implement positioning;

[0317] 3. Reporting to the LMF the configuration information of the signal configured by the first network device for the terminal to perform positioning;

[0318] 4. Send a positioning message request to at least one second network device (which may be another TRP) through the Xn interface, and the positioning message request carries configuration information of the signal used to achieve positioning.

[0319] Among them, step 4 is an optional step.

[0320] (3) AMF side:

[0321] Send a paging message containing positioning or idle state positioning related indication information.

[0322] For example, the pagingCause in the pagingRecord is positioning. After receiving the paging message, the terminal will carry relevant indication information that the random access purpose is positioning in message 3 or message 1. The indication information can be a specific random access preamble or positioning indication information.

[0323] (4)LMF side:

[0324] 1. After receiving the configuration information of the signal for the terminal to perform positioning reported by the first network device, send it to at least one second network device (i.e., other TRP) through NRPPa signaling (such as Location Information Request) on the NRPPa interface;

[0325] 2. After completing the monitoring, the first network device and at least one second network device send the positioning measurement result information (such as the distance between different TRPs and the terminal) to the LMF, so that the LMF completes the terminal position solution.

[0326] For example, based on the above content, the wireless positioning method provided in the embodiment of the present application can be implemented as follows:

[0327] Step 1: The first network device sends a random access resource for positioning purpose (Broadcasting RACH resource for positioning purpose);

[0328] Step 2: AMF sends a paging message for triggering the terminal to perform positioning (Paging UE for triggering positioning);

[0329] Step 3: The terminal and the first network device perform a random access procedure (RACh procedure for contention resolution and allocation of dedicated RACH resource or SRS);

[0330] Step 4: The first network device sends the configuration information of the signal used to implement positioning to the LMF (Notification of the dedicated RACH resource or SRS for positioning);

[0331] Step 5: After performing a random access procedure with the first network device, the terminal sends a signal for achieving positioning (RACH preambles or SRS transmission for positioning) to the first network device and at least one second network device;

[0332] Step 6: The first network device and at least one second network device send positioning measurement result information (Location measurement result reporting) to the LMF;

[0333] Step 7: LMF performs location calculation of the terminal based on the positioning measurement result information.

[0334] The following is an embodiment of the device of the present application. For details not described in detail in the embodiment of the device, reference can be made to the corresponding records in the above method embodiment, and no further details will be given herein.

[0335] FIG15 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application, the device comprising:

[0336] The sending module 1520 is configured to send a signal to the first network device and at least one second network device after the terminal performs a random access process with the first network device.

[0337] Optionally, the signal is used by the terminal to achieve positioning.

[0338] Optionally, when sending a signal, the TA amount obtained during the random access process is not used.

[0339] Optionally, the apparatus further includes: a receiving module 1540, configured to receive message 4 or message B sent by the first network device; wherein message 4 or message B carries configuration information of the signal.

[0340] Optionally, the sending module 1520 is further configured to send a message 3 or a message A to the first network device; wherein the message 3 or the message A carries positioning indication information, and the positioning indication information is used to indicate that the purpose of the random access is positioning.

[0341] Optionally, the sending module 1520 is further configured to send a message 1 or a message A to the first network device; wherein the random access preamble used in the message 1 or the message A is used to indicate that the purpose of the random access is positioning.

[0342] Optionally, the apparatus further includes: a receiving module 1540, configured to receive a broadcast message sent by the first network device; wherein the broadcast message is used to configure the terminal to determine random access resources used to perform positioning.

[0343] Optionally, message 4 or message B is RRC signaling that does not cause the terminal to enter a connected state; or, message 4 or message B is carried in RRC signaling.

[0344] Optionally, the RRC signaling is RRC connection rejection signaling.

[0345] Optionally, the device also includes: a receiving module 1540, used to receive a paging message from the AMF; wherein the paging message is used to trigger the terminal to perform positioning based on the signal.

[0346] Optionally, the signal includes at least one of the following information: a terminal-specific random access preamble code; SRS.

[0347] FIG16 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application, the device comprising:

[0348] Receiving module 1620, configured to receive a signal sent by a terminal;

[0349] The signal is sent by the terminal after performing a random access process with the first network device.

[0350] Optionally, the signal is used by the terminal to achieve positioning.

[0351] Optionally, when sending a signal, the terminal does not use the TA amount obtained during the random access process.

[0352] Optionally, the device further includes: a sending module 1640, configured to send message 4 or message B to the terminal; wherein message 4 or message B carries configuration information of the signal.

[0353] Optionally, the receiving module 1620 is further configured to receive a message 3 or a message A sent by the terminal; wherein the message 3 or the message A carries positioning indication information, and the positioning indication information is used to indicate that the purpose of the random access is positioning.

[0354] Optionally, the receiving module 1620 is further configured to receive a message 1 or a message A sent by the terminal; wherein the random access preamble used in the message 1 or the message A is used to indicate that the purpose of the random access is positioning.

[0355] Optionally, the device further includes: a sending module 1640, configured to send a broadcast message; wherein the broadcast message is used to configure the terminal to determine random access resources used to perform positioning.

[0356] Optionally, message 4 or message B is RRC signaling that does not cause the terminal to enter a connected state; or, message 4 or message B is carried in RRC signaling.

[0357] Optionally, the RRC signaling is RRC connection rejection signaling.

[0358] Optionally, the device further includes: a sending module 1640, configured to send configuration information of a signal to the LMF.

[0359] Optionally, the apparatus further includes: a sending module 1640, configured to send a positioning information request to the second network device; wherein the positioning information request carries configuration information of the signal.

[0360] Optionally, the device further includes: a sending module 1640, configured to send positioning measurement result information to the LMF; wherein the positioning measurement result information is used by the LMF to perform terminal position solution.

[0361] Optionally, the signal includes at least one of the following information: a terminal-specific random access preamble code; SRS.

[0362] FIG17 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application, the device comprising:

[0363] Receiving module 1720, configured to receive a signal sent by a terminal;

[0364] The signal is sent by the terminal after performing a random access process with the first network device.

[0365] Optionally, the signal is used by the terminal to achieve positioning.

[0366] Optionally, when sending a signal, the terminal does not use the TA amount obtained during the random access process.

[0367] Optionally, the receiving module 1720 is further used to receive configuration information of the signal sent by the LMF.

[0368] Optionally, the device further includes: a sending module 1740, configured to send positioning measurement result information to the LMF; wherein the positioning measurement result information is used by the LMF to perform terminal position solution.

[0369] Optionally, the signal includes at least one of the following information: a terminal-specific random access preamble code; SRS.

[0370] FIG18 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application, the device comprising:

[0371] The sending module 1820 is configured to send a paging message to the terminal;

[0372] The paging message is used to trigger the terminal to perform positioning based on the signal.

[0373] Optionally, the signal is used by the terminal to achieve positioning.

[0374] Optionally, the paging reason in the paging record is positioning.

[0375] Optionally, the signal includes at least one of the following information: a terminal-specific random access preamble code; SRS.

[0376] FIG19 is a schematic diagram of a wireless positioning device provided by an exemplary embodiment of the present application, the device comprising:

[0377] The receiving module 1920 is configured to receive configuration information of a signal sent by the first network device;

[0378] The signal is configured by the first network device for the terminal.

[0379] Optionally, the signal is used for the terminal to achieve positioning after performing a random access process with the first network device.

[0380] Optionally, the apparatus further includes: a sending module 1940, configured to send configuration information of the signal to at least one second network device.

[0381] Optionally, the configuration information of the signal is sent via NRPPa signaling.

[0382] Optionally, the apparatus further includes: a position calculation module 1960, configured to receive positioning measurement result information sent by the first network device and / or at least one second network device; and perform position calculation of the terminal according to the positioning measurement result information.

[0383] Optionally, the signal includes at least one of the following information: a terminal-specific random access preamble code; SRS.

[0384] FIG20 is a block diagram of a communication device provided by an exemplary embodiment of the present application. The communication device includes: a processor 1201 , a receiver 2002 , a transmitter 2003 , a memory 2004 and a bus 2005 .

[0385] The processor 2001 includes one or more processing cores. The processor 2001 executes various functional applications and information processing by running software programs and modules.

[0386] The receiver 2002 and the transmitter 2003 may be implemented as a communication component, which may be a communication chip.

[0387] The memory 2004 is connected to the processor 2001 via a bus 2005 .

[0388] The memory 2004 may be used to store at least one instruction, and the processor 2001 may be used to execute the at least one instruction to implement the various steps of the method for determining the RAR receiving window mentioned in the above method embodiment.

[0389] In addition, the memory 2004 can be implemented by any type of volatile or non-volatile storage device or a combination thereof. The volatile or non-volatile storage devices include but are not limited to: magnetic disks or optical disks, electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), read-only memory (ROM), magnetic memory, flash memory, and programmable read-only memory (PROM).

[0390] The present application also provides a terminal, which includes a memory and a processor; the memory stores at least one program code, and the program code is loaded and executed by the processor to implement the aforementioned wireless positioning method.

[0391] The present application also provides a first network device, which includes a memory and a processor; at least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the aforementioned wireless positioning method.

[0392] The present application also provides a second network device, which includes a memory and a processor; at least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the aforementioned wireless positioning method.

[0393] The present application also provides an AMF, which includes a memory and a processor; at least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the aforementioned wireless positioning method.

[0394] The present application also provides an LMF, which includes a memory and a processor; the memory stores at least one program code, and the program code is loaded and executed by the processor to implement the aforementioned wireless positioning method.

[0395] The present application also provides a computer-readable storage medium, in which a computer program is stored. The computer program is used to be executed by a processor to implement the aforementioned wireless positioning method.

[0396] The present application also provides a chip, which includes a programmable logic circuit and / or program instructions, and is used to implement the aforementioned wireless positioning method when an electronic device equipped with the chip is running.

[0397] The present application also provides a computer program product, which includes computer instructions. The computer instructions are stored in a computer-readable storage medium. The processor reads and executes the computer instructions from the computer-readable storage medium to implement the aforementioned wireless positioning method.

[0398] The above description is merely an optional embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A wireless positioning method, characterized in that: The method is executed by a terminal, and includes: After performing a random access procedure with a first network device, a signal is sent to the first network device and at least one second network device.

2. The method according to claim 1, characterized in that The signal is used by the terminal to achieve positioning.

3. The method according to claim 1, characterized in that When sending the signal, the timing advance TA amount obtained during the random access process is not used.

4. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: receiving message 4 or message B sent by the first network device; The message 4 or the message B carries the configuration information of the signal.

5. The method according to claim 4, characterized in that The method further comprises: Sending message 3 or message A to the first network device; The message 3 or the message A carries positioning indication information, and the positioning indication information is used to indicate that the purpose of random access is positioning.

6. The method according to claim 4, characterized in that The method further comprises: Sending message 1 or message A to the first network device; The random access preamble used in the message 1 or the message A is used to indicate that the purpose of random access is positioning.

7. The method according to claim 6, characterized in that The method further comprises: receiving a broadcast message sent by the first network device; The broadcast message is used to configure the terminal to determine random access resources used to perform the positioning.

8. The method according to claim 4, characterized in that The message 4 or the message B is a radio resource control RRC signaling that does not cause the terminal to enter a connected state; Alternatively, the message 4 or the message B is carried in the RRC signaling.

9. The method according to claim 8, characterized in that The RRC signaling is an RRC connection rejection signaling.

10. The method according to any one of claims 1 to 9, characterized in that: The method further comprises: Receive paging messages from the access and mobility management function (AMF); The paging message is used to trigger the terminal to perform positioning based on the signal.

11. The method according to any one of claims 1 to 9, characterized in that: The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

12. A wireless positioning method, characterized in that: The method is performed by a first network device, and the method includes: receiving a signal sent by a terminal; The signal is sent by the terminal after performing a random access process with the first network device.

13. The method according to claim 12, characterized in that The signal is used by the terminal to achieve positioning.

14. The method according to claim 12, characterized in that When sending the signal, the terminal does not use the timing advance TA amount obtained during the random access process.

15. The method according to any one of claims 12 to 14, characterized in that: The method further comprises: Sending message 4 or message B to the terminal; The message 4 or the message B carries the configuration information of the signal.

16. The method according to claim 15, characterized in that The method further comprises: receiving message 3 or message A sent by the terminal; The message 3 or the message A carries positioning indication information, and the positioning indication information is used to indicate that the purpose of random access is positioning.

17. The method according to claim 15, characterized in that The method further comprises: Receiving message 1 or message A sent by the terminal; The random access preamble used in the message 1 or the message A is used to indicate that the purpose of random access is positioning.

18. The method according to claim 17, characterized in that The method further comprises: sending the broadcast message; The broadcast message is used to configure the terminal to determine random access resources used to perform the positioning.

19. The method according to claim 15, characterized in that The message 4 or the message B is a radio resource control RRC signaling that does not cause the terminal to enter a connected state; Alternatively, the message 4 or the message B is carried in the RRC signaling.

20. The method according to claim 19, wherein The RRC signaling is an RRC connection rejection signaling.

21. The method according to any one of claims 12 to 20, characterized in that The method further comprises: The configuration information of the signal is sent to the location management function LMF.

22. The method according to any one of claims 12 to 20, characterized in that The method further comprises: Sending a positioning information request to the second network device; The positioning information request carries the configuration information of the signal.

23. The method according to any one of claims 12 to 20, characterized in that The method further comprises: Sending positioning measurement result information to the positioning management function LMF; The positioning measurement result information is used by the LMF to perform position calculation for the terminal.

24. The method according to any one of claims 12 to 23, characterized in that The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

25. A wireless positioning method, characterized in that: The method is performed by a second network device, and the method includes: receiving a signal sent by a terminal; The signal is sent by the terminal after performing a random access process with the first network device.

26. The method according to claim 25, characterized in that The signal is used by the terminal to achieve positioning.

27. The method according to claim 25, characterized in that When sending the signal, the terminal does not use the timing advance TA amount obtained during the random access process.

28. The method according to any one of claims 25 to 27, characterized in that The method further comprises: Receive configuration information of the signal sent by the positioning management function LMF.

29. The method according to any one of claims 25 to 27, characterized in that The method further comprises: Sending positioning measurement result information to the positioning management function LMF; The positioning measurement result information is used by the LMF to perform position calculation for the terminal.

30. The method according to any one of claims 25 to 27, characterized in that The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

31. A wireless positioning method, characterized in that: The method is performed by an access and mobility management function (AMF), and the method includes: Sending a paging message to the terminal; The paging message is used to trigger the terminal to perform positioning based on a signal.

32. The method according to claim 31, characterized in that The signal is used by the terminal to achieve positioning.

33. The method according to claim 31 or 32, characterized in that The paging reason in the paging record is positioning.

34. The method according to any one of claims 31 to 33, characterized in that The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

35. A wireless positioning method, characterized in that: The method is performed by a location management function LMF, and the method includes: receiving configuration information of a signal sent by the first network device; The signal is configured by the first network device for the terminal.

36. The method according to claim 35, characterized in that The signal is used by the terminal to achieve positioning after performing a random access process with the first network device.

37. The method according to claim 35 or 36, characterized in that The method further comprises: The configuration information of the signal is sent to at least one second network device.

38. The method according to claim 37, wherein The configuration information of the signal is sent via New Radio Positioning Protocol NRPPa signaling.

39. The method according to any one of claims 35 to 38, characterized in that The method further comprises: receiving positioning measurement result information sent by the first network device and / or at least one second network device; Calculate the position of the terminal according to the positioning measurement result information.

40. The method according to any one of claims 35 to 38, characterized in that The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

41. A wireless positioning device, characterized in that: The device comprises: The sending module is used for the terminal to send a signal to the first network device and at least one second network device after performing a random access process with the first network device.

42. The device according to claim 41, characterized in that The signal is used by the terminal to achieve positioning.

43. The device according to claim 41, characterized in that When sending the signal, the timing advance TA amount obtained during the random access process is not used.

44. The device according to any one of claims 41 to 43, characterized in that The device further comprises: A receiving module, configured to receive message 4 or message B sent by the first network device; The message 4 or the message B carries the configuration information of the signal.

45. The device according to claim 44, characterized in that The sending module is further configured to send message 3 or message A to the first network device; The message 3 or the message A carries positioning indication information, and the positioning indication information is used to indicate that the purpose of random access is positioning.

46. ​​The device according to claim 44, characterized in that The sending module is further configured to send message 1 or message A to the first network device; The random access preamble used in the message 1 or the message A is used to indicate that the purpose of random access is positioning.

47. The device according to claim 46, characterized in that The device further comprises: a receiving module, configured to receive a broadcast message sent by the first network device; The broadcast message is used to configure the terminal to determine random access resources used to perform the positioning.

48. The device according to claim 44, characterized in that The message 4 or the message B is a radio resource control RRC signaling that does not cause the terminal to enter a connected state; Alternatively, the message 4 or the message B is carried in the RRC signaling.

49. The device according to claim 48, characterized in that The RRC signaling is an RRC connection rejection signaling.

50. The device according to any one of claims 41 to 49, characterized in that The device further comprises: A receiving module, configured to receive a paging message from an access and mobility management function (AMF); The paging message is used to trigger the terminal to perform positioning based on the signal.

51. The device according to any one of claims 41 to 49, characterized in that The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

52. A wireless positioning device, characterized in that: The device comprises: A receiving module, used for receiving signals sent by the terminal; The signal is sent by the terminal after performing a random access process with the first network device.

53. The device according to claim 52, characterized in that The signal is used by the terminal to achieve positioning.

54. The device according to claim 52, characterized in that When sending the signal, the terminal does not use the timing advance TA amount obtained during the random access process.

55. The device according to any one of claims 52 to 54, characterized in that The device further comprises: A sending module, configured to send message 4 or message B to the terminal; The message 4 or the message B carries the configuration information of the signal.

56. The device according to claim 55, characterized in that The receiving module is further configured to receive message 3 or message A sent by the terminal; The message 3 or the message A carries positioning indication information, and the positioning indication information is used to indicate that the purpose of random access is positioning.

57. The device according to claim 55, characterized in that The receiving module is further configured to receive message 1 or message A sent by the terminal; The random access preamble used in the message 1 or the message A is used to indicate that the purpose of random access is positioning.

58. The device according to claim 57, characterized in that The device further comprises: A sending module, configured to send the broadcast message; The broadcast message is used to configure the terminal to determine random access resources used to perform the positioning.

59. The device according to claim 55, characterized in that The message 4 or the message B is a radio resource control RRC signaling that does not cause the terminal to enter a connected state; Alternatively, the message 4 or the message B is carried in the RRC signaling.

60. The device according to claim 59, characterized in that The RRC signaling is an RRC connection rejection signaling.

61. The device according to any one of claims 52 to 60, characterized in that The device further comprises: The sending module is used to send the configuration information of the signal to the positioning management function LMF.

62. The device according to any one of claims 52 to 60, characterized in that The device further comprises: A sending module, configured to send a positioning information request to the second network device; The positioning information request carries the configuration information of the signal.

63. The device according to any one of claims 52 to 62, characterized in that The device further comprises: A sending module is used to send positioning measurement result information to the positioning management function LMF; The positioning measurement result information is used by the LMF to perform position calculation for the terminal.

64. The device according to any one of claims 52 to 63, characterized in that The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

65. A wireless positioning device, characterized in that The device comprises: A receiving module, used for receiving signals sent by the terminal; The signal is sent by the terminal after performing a random access process with the first network device.

66. The device according to claim 65, characterized in that The signal is used by the terminal to achieve positioning.

67. The device according to claim 65, characterized in that When sending the signal, the terminal does not use the timing advance TA amount obtained during the random access process.

68. The device according to any one of claims 65 to 67, characterized in that The receiving module is further used to receive configuration information of the signal sent by the positioning management function LMF.

69. The device according to any one of claims 65 to 67, characterized in that The device further comprises: A sending module is used to send positioning measurement result information to the positioning management function LMF; The positioning measurement result information is used by the LMF to perform position calculation for the terminal.

70. The device according to any one of claims 65 to 69, characterized in that The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

71. A wireless positioning device, characterized in that: The device comprises: A sending module, used for sending a paging message to a terminal; The paging message is used to trigger the terminal to perform positioning based on a signal.

72. The device according to claim 71, characterized in that The signal is used by the terminal to achieve positioning.

73. The device according to claim 71 or 72, characterized in that The paging reason in the paging record is positioning.

74. The device according to any one of claims 71 to 73, characterized in that The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

75. A wireless positioning device, characterized in that: The device comprises: A receiving module, configured to receive configuration information of a signal sent by the first network device; The signal is configured by the first network device for the terminal.

76. The device according to claim 75, characterized in that The signal is used by the terminal to achieve positioning after performing a random access process with the first network device.

77. The device according to claim 75 or 76, characterized in that The device further comprises: The sending module is used to send the configuration information of the signal to at least one second network device.

78. The device according to claim 77, characterized in that The configuration information of the signal is sent via New Radio Positioning Protocol NRPPa signaling.

79. The device according to any one of claims 75 to 78, characterized in that The device further comprises: a position calculation module, configured to receive positioning measurement result information sent by the first network device and / or at least one second network device; Calculate the position of the terminal according to the positioning measurement result information.

80. The device according to any one of claims 75 to 79, characterized in that The signal includes at least one of the following information: A random access preamble code dedicated to the terminal; Channel Sounding Reference Signal SRS.

81. A terminal, characterized in that The terminal includes a memory and a processor; At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method according to any one of claims 1 to 11.

82. A first network device, characterized in that The first network device includes a memory and a processor; At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method according to any one of claims 12 to 24.

83. A second network device, characterized in that: The second network device includes a memory and a processor; At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method as described in any one of claims 25 to 30.

84. An access and mobility management function AMF, characterized in that The AMF includes a memory and a processor; At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method as described in any one of claims 31 to 34.

85. A location management function LMF, characterized in that The LMF includes a memory and a processor; At least one program code is stored in the memory, and the program code is loaded and executed by the processor to implement the wireless positioning method as described in any one of claims 35 to 40.

86. A computer-readable storage medium, characterized in that The storage medium stores a computer program, which is used to be executed by a processor to implement the wireless positioning method according to any one of claims 1 to 40.

87. A chip, characterized in that The chip includes a programmable logic circuit and / or program instructions, and when an electronic device equipped with the chip is running, is used to implement the wireless positioning method as described in any one of claims 1 to 40.

88. A computer program product, characterized in that The computer program product includes computer instructions, which are stored in a computer-readable storage medium. A processor reads and executes the computer instructions from the computer-readable storage medium to implement the wireless positioning method according to any one of claims 1 to 40.

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