Position determination method and device

Abstract

The embodiment of the present application provides a method and device for determining a position, the method comprising: a terminal device receives first information from a first network device, the first information comprising SRS configuration information and / or PRS configuration information, the first information being carried in a measurement configuration message or a switching command; and then sending second information according to the first information, the second information being used to determine the position information of the terminal device. The present application implements the determination of the position information of the terminal device based on the positioning configuration information during cell switching, thereby avoiding the problem of uplink clock asynchronization caused by the different position information of the terminal device obtained by the terminal device and the network device in switching without a random access process, and optimizing the performance of the terminal device.

Description

Technical Field

[0001] The present application relates to the field of wireless communication technology, and in particular to a location determination method and device. Background Art

[0002] In the Long Term Evolution (LTE) system and the fifth generation cellular mobile communication system (5th Generation, hereinafter referred to as 5G, also known as New Radio, new air interface, or NR for short), a switching method that does not require a random access process (Random Access Channel, RACH) is defined, that is, a random access process-less (Random Access Channel-less, RACH-less) switching. In the RACH-less switching, there is no process in which the user equipment (User Equipment, UE) sends a random access preamble (Preamble) and the network equipment sends a random access response (Random Access Response, RAR). The timing advance (Timing Advance, TA) from the UE to the target cell is obtained by other means, thereby shortening the cell switching time.

[0003] In the Non-Terrestrial Network (NTN) system, the satellite is very high above the ground and the transmission delay is large. In order to shorten the cell switching time, the NTN system can use RACH-less, that is, when the UE knows that the target cell is configured with TA or its location information, the UE can directly send uplink data to the target cell. However, in this process, the UE and the network equipment may obtain different location information of the UE, resulting in the clock of the uplink being out of sync, so that the target cell cannot receive the uplink data sent by the UE. Summary of the invention

[0004] The embodiments of the present application provide a location determination method and apparatus, which can avoid the situation where the uplink clock is out of sync due to the different location information of the terminal device obtained by the terminal device and the network device.

[0005] In a first aspect, an embodiment of the present application provides a method for determining a position, the method comprising:

[0006] The terminal device receives first information from the first network device, where the first information includes channel sounding reference signal SRS configuration information and / or position reference signal PRS configuration information, and the first information is carried in a measurement configuration message or a switching command;

[0007] The terminal device sends second information according to the first information, and the second information is used to determine the location information of the terminal device.

[0008] In a second aspect, an embodiment of the present application provides a location determination method, the method comprising:

[0009] The first network device sends first information to the terminal device, where the first information includes SRS configuration information and / or PRS configuration information, and the first information is carried in a measurement configuration message or a switching command;

[0010] The first network device receives second information from the terminal device, where the second information is used to determine location information of the terminal device.

[0011] In a third aspect, an embodiment of the present application provides a position determination device, the device comprising:

[0012] A transceiver unit is used for a terminal device to receive first information from a first network device, wherein the first information includes SRS configuration information and / or PRS configuration information, and the first information is carried in a measurement configuration message or a switching command; the terminal device sends second information based on the first information, and the second information is used to determine the location information of the terminal device.

[0013] In a fourth aspect, an embodiment of the present application provides a position determination device, the device comprising:

[0014] A transceiver unit is used for a first network device to send first information to a terminal device, wherein the first information includes SRS configuration information and / or PRS configuration information, and the first information is carried in a measurement configuration message or a switching command; the first network device receives second information from the terminal device, and the second information is used to determine the location information of the terminal device.

[0015] In a fifth aspect, an embodiment of the present application provides a terminal device, comprising a processor, a memory, a transceiver, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing some or all of the steps described in the method described in the first aspect above.

[0016] In a sixth aspect, an embodiment of the present application provides a network device, comprising a processor, a memory, a transceiver, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the program includes instructions for executing some or all of the steps described in the method described in the second aspect above.

[0017] In a seventh aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute some or all of the steps described in the method described in the first aspect above.

[0018] In an eighth aspect, an embodiment of the present application provides a computer-readable storage medium, which stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute some or all of the steps described in the method described in the second aspect above.

[0019] In a ninth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in the method described in the first aspect of the embodiment of the present application. The computer program product may be a software installation package.

[0020] In a tenth aspect, an embodiment of the present application provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described in the method described in the second aspect of the embodiment of the present application. The computer program product may be a software installation package.

[0021] It can be seen that in an embodiment of the present application, a terminal device receives first information from a first network device, the first information includes SRS configuration information and / or PRS configuration information, the first information is carried in a measurement configuration message or a switching command, and then sends second information based on the first information, the second information is used to determine the location information of the terminal device, and the location information of the terminal device is determined based on the positioning configuration information, thereby avoiding the uplink clock asynchronization problem caused by the terminal device and the network device obtaining different location information of the terminal device in the switching without a random access process, thereby optimizing the performance of the terminal device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

[0024] Figure 2A It is a flowchart of a random access process provided by an embodiment of the present application;

[0025] Figure 2B This is a flowchart of a non-random access process provided by an embodiment of the present application;

[0026] Figure 3 is a flow chart of a location determination method provided in an embodiment of the present application;

[0027] Figure 4 is a flow chart of a location determination method provided in an embodiment of the present application;

[0028] Figure 5 is a flow chart of a location determination method provided in an embodiment of the present application;

[0029] Figure 6 is a flow chart of a location determination method provided in an embodiment of the present application;

[0030] Figure 7 is a flow chart of a location determination method provided in an embodiment of the present application;

[0031] Figure 8 is a structural schematic diagram of a position determination device provided in an embodiment of the present application;

[0032] Fig. 9 It is a structural diagram of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0034] In order to better understand the solutions of the embodiments of the present application, the relevant terms and concepts that may be involved in the embodiments of the present application are first introduced below.

[0035] 1) A terminal device is a device with wireless communication function, which can be deployed on land, including indoors or outdoors, handheld, wearable or vehicle-mounted; it can also be deployed on the water (such as ships, etc.); it can also be deployed in the air (such as airplanes, balloons, satellites, etc.). The terminal device can be a mobile phone, a tablet computer (pad), a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical, a wireless terminal in smart grid, a wireless terminal in smart home, etc. The terminal device can also be a handheld device with wireless communication function, a vehicle-mounted device, a wearable device, a computer device or other processing device connected to a wireless modem, etc. Terminal devices may be called different names in different networks, such as: terminal equipment, access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, cellular phone, cordless phone, session initiation protocol (SIP) phone, wireless local loop (WLL) station, personal digital assistant (PDA), terminal equipment in 5G network or future evolution network, etc.

[0036] 2) Network equipment is a device deployed in a wireless access network to provide wireless communication functions. For example, a network device may be a radio access network (RAN) device on the access network side of a cellular network. The so-called RAN device is a device that connects a terminal device to a wireless network, including but not limited to: evolved Node B (eNB), radio network controller (RNC), Node B (NB), base station controller (BSC), base transceiver station (BTS), home base station (e.g., Home evolved Node B, or Home Node B, HNB), base band unit (BBU), and mobility management entity (MME); for another example, a network device may also be a node device in a wireless local area network (WLAN), such as an access controller (AC), a gateway, or a WIFI access point (AP); for another example, a network device may also be a transmission node or a transmission reception point (TRP or TP) in an NR system.

[0037] 3) Location management function (LMF): It is used to select the corresponding positioning method according to the positioning accuracy requirements, delay requirements, etc., and select the corresponding communication protocol to complete the interaction of the information required for positioning. The LMF is also used to provide other information required for positioning services, or positioning strategies.

[0038] 4) Positioning configuration information: The main idea of ​​positioning technology is to use a positioning principle similar to the Global Navigation Satellite System (GNSS). By measuring the reference signal time difference (RSTD) or departure angle or arrival angle of the positioning configuration information of two or more network devices or terminal devices, the location of the terminal device can be calculated when the location of each network device is known.

[0039] 5) Switching process: When a terminal that is using network services moves from one service cell to another, or due to wireless transmission service load adjustment, activation operation maintenance, equipment failure, etc., in order to ensure communication continuity and service quality, the system must transfer the communication link between the terminal and the original service cell to the new service cell, that is, perform the switching process.

[0040] Taking the Xn interface switching process as an example, the entire switching process is divided into the following three stages:

[0041] (1) Handover preparation: including measurement control and reporting, handover request and confirmation. The handover confirmation message contains the handover command generated by the target serving cell. The source base station is not allowed to make any modification to the handover command generated by the target base station and directly forwards the handover command to the terminal.

[0042] (2) Handover execution: After receiving the handover command, the terminal immediately executes the handover process, that is, the terminal disconnects from the source base station and connects to the target base station (such as performing random access, sending an RRC handover completion message to the target base station, etc.); SN state transfer and data forwarding.

[0043] (3) Handover completion: The target base station performs PathSwitch with the access and mobility management function AMF and the user plane function UPF to release the UE context of the source base station.

[0044] 6) Measurement configuration message: used for mobility measurement in the connected state. In the RRC connected state, the source base station sends a measurement configuration message to the terminal device through dedicated signaling. The measurement configuration message contains the object that the terminal device needs to measure, the cell list, the reporting method, the measurement identifier, the event parameters, etc.

[0045] 7) Switching command: The switching command (Radio Resource Control (RRC) connection reconfiguration message carrying mobility control information) is generated by the target base station and transparently transmitted to the UE through the source base station. The source base station performs necessary encryption and integrity protection on this message. When the terminal device receives the message, it will use the relevant parameters in the message to initiate the switching process. The terminal device does not need to wait for the Hybrid Automatic Repeat request (HARQ) or Automatic Repeat request (ARQ) response sent by the lower layer to the source base station to initiate the switching process.

[0046] 8)TA: A parameter used to indicate the time deviation when a network device receives data sent by a terminal device. Its physical meaning refers to the round-trip delay between the terminal device and the network device.

[0047] In the first part, the communication system architecture and background of the technical solution disclosed in this application are introduced as follows.

[0048] For example, see Figure 1 , Figure 1 FIG. 1 shows a schematic diagram of a communication system architecture provided by an embodiment of the present application. The satellite communication system includes network equipment, terminal equipment and location management functions. Figure 1 As shown, the network device, the terminal device and the location management function can communicate with each other. The satellite communication system can be a system using 5G mobile communication technology, an evolved long term evolution (eLTE) system, a communication system integrating multiple communication technologies (for example, a communication system integrating LTE technology and NR technology), or a subsequent evolution communication system. The terminal device is in the coverage range of the network device, and the network device can be a geosynchronous orbit satellite or a low earth orbit satellite, which is not limited in the embodiment of the present application. The network device includes a first network device, a second network device and at least one adjacent network device of the first network device. In some embodiments, in order to conveniently distinguish the first network device and the second network device, the first network device will be used as the base station to which the current terminal device is connected, which is the source base station; the second network device is the base station to which the terminal device needs to switch, which is the target base station. The first network device and / or the second network device can communicate wirelessly with the terminal device via one or more antennas. In actual applications, the connection between the above-mentioned devices can be a wireless connection. In order to conveniently and intuitively represent the connection relationship between the devices, Figure 1 Solid lines are used to indicate.

[0049] The communication link between the network device and the terminal device may include: a downlink (DL) transmission from the network device to the terminal device, and / or an uplink (UP) transmission from the terminal device to the network device. Downlink transmission may also be referred to as forward link transmission, and uplink transmission may also be referred to as reverse link transmission.

[0050] It should be noted that Figure 1 The forms and quantities of the network devices, terminal devices and LMFs shown in the figure are for illustrative purposes only and do not constitute limitations on the embodiments of the present application.

[0051] At present, 3GPP is studying the technology of non-terrestrial network (NTN). NTN generally uses satellite communication to provide communication services to ground users. Compared with ground cellular network communication, satellite communication has many unique advantages. First, satellite communication is not limited by the user's geographical location. For example, general land communication cannot cover areas such as oceans, mountains, deserts, etc. where communication equipment cannot be set up or where communication coverage is not provided due to sparse population. However, since a satellite can cover a large area and the satellite can orbit around the earth, every corner of the earth can be covered by satellite communication. Secondly, satellite communication can cover remote mountainous areas, poor and backward countries or regions at a relatively low cost, which is conducive to promoting the development of these areas. Thirdly, satellite communication has a long distance, and the cost of communication does not increase significantly as the communication distance increases; finally, satellite communication has high stability and is not limited by natural disasters.

[0052] Communication satellites are divided into Low-Earth Orbit (LEO) satellites, Medium-Earth Orbit (MEO) satellites, Geostationary Earth Orbit (GEO) satellites, High Elliptical Orbit (HEO) satellites, etc. according to their orbital altitudes. At the current stage, the main research is on LEO and GEO.

[0053] Among them, the altitude range of low-orbit satellites is 500km~1500km, and the corresponding orbital period is about 1.5 hours~2 hours. The signal propagation delay of single-hop communication between users is generally less than 20ms. The maximum satellite visibility time is 20 minutes. The signal propagation distance is short, the link loss is small, and the transmission power requirement of the user terminal is not high.

[0054] Geosynchronous orbit satellites have an orbital altitude of 35,786 km and rotate around the earth every 24 hours. The signal propagation delay of single-hop communication between users is generally 250ms. In order to ensure satellite coverage and improve the system capacity of the entire satellite communication system, satellites use multiple beams to cover the ground. A satellite can form dozens or even hundreds of beams to cover the ground; a satellite beam can cover a ground area with a diameter of tens to hundreds of kilometers.

[0055] In LTE and 5G NR, the handover of terminal equipment between the source base station and the target base station usually goes through the RACH process, such as Figure 2AAs shown. That is, after receiving the handover command from the source base station, the terminal device needs to send a preamble code Preamble to the target base station. The target base station replies RAR to the terminal device. RAR contains the uplink TA of the terminal device for the target base station. TA ensures that the time when the signals of different terminal devices arrive at the base station is basically aligned. One of the functions of the RACH process is that the terminal device obtains the uplink timing advance for the target base station. Among them, LTE also defines a handover method that does not require the RACH process, namely RACH-less handover, such as Figure 2B As shown. In RACH-less switching, there is no process of the terminal device sending Preamble and the base station replying RAR. The TA of the terminal device to the target base station is obtained through other means, which shortens the switching time. In the NTN system, since the satellite is very high above the ground, the transmission delay is large. Therefore, in order to shorten the cell switching time, RACH-less can be used in the NTN system, that is, when the terminal device knows that the network device is configured with TA or its location information, the terminal device can directly send uplink data to the target base station. However, in this process, the location information of the terminal device obtained by the terminal device and the network device may be different, which will cause the uplink clock to be out of sync, so that the network device cannot receive the uplink data sent by the terminal device, affecting the user experience.

[0056] In response to the above problems, the present application proposes a location determination method and device, in which a terminal device receives first information from a first network device, the first information is used for positioning measurement of the terminal device, and then sends second information based on the first information, the second information is used to determine the location information of the terminal device, thereby realizing determination of the location information of the terminal device based on positioning configuration information, thereby avoiding the problem of uplink clock asynchrony caused by the terminal device and the network device obtaining different location information of the terminal device during switching without a random access process, and optimizing the performance of the terminal device.

[0057] In the second part, the protection scope of the claims disclosed in the embodiments of the present application is introduced as follows.

[0058] See also Figure 3 , Figure 3 A flow chart of a location confirmation method provided in an embodiment of the present application, which can be applied to Figure 1 In the communication system shown in FIG. Figure 3 As shown, the method comprises the following steps:

[0059] S310. The first network device sends first information to the terminal device.

[0060] The first information includes channel sounding reference signal (SRS) configuration information and / or positioning reference signal (PRS) configuration information. The terminal device and / or the network device can obtain the location information of the terminal device based on the measurement results of the SRS configuration information and / or the PRS configuration information and the location estimation algorithm.

[0061] In an embodiment of the present application, the first information may be carried in a measurement configuration message or a switching command. When a terminal device performs a cell switching without a random access process, in order to synchronize the uplink clock, the terminal device and the target base station may obtain the location information of the terminal device before the terminal device performs the cell switching, thereby aligning the uplink TA. Therefore, during the cell switching process, the first network device may carry the first information when sending a measurement configuration message or a switching command, so that the terminal device determines the positioning configuration information, and then determines the location information of the terminal device according to the positioning configuration information.

[0062] Optionally, the first information may also include at least one of the following: a list of cells to be measured, transmit receive point (TRP) information, network equipment set information, beam information, spatial direction information and coordinate information.

[0063] The network device set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to be switched by the terminal device. The TRP information may also include information of one or more TRPs, and the list of cells to be measured may include one or more cells to be measured.

[0064] In some examples, when the first information includes network device set information, the network devices in the network device set information may include the base station corresponding to the cell to be measured in the list of cells to be measured and / or the TRP in the TRP information. In some examples, when the first information includes TRP information, the TRP information may include the base station corresponding to the cell to be measured in the list of cells to be measured and / or the network devices in the network device set information. In some examples, when the first information includes a list of cells to be measured, the list of cells to be measured may include the TRP in the TRP information and / or the network devices in the network device set information. It should be noted that in some examples, the network devices in the network device set information may be referred to as TRPs, or as base stations corresponding to the cells to be measured. Of course, the embodiments of the present application are not limited to other names. In some examples, in order to conveniently distinguish between the first network device and the second network device, the first network device will be used as the base station to which the current terminal device is connected, as the source base station; the second network device is the base station to which the terminal device is about to switch, as the target base station.

[0065] It should be noted that the second network device may include different numbers of base stations at different stages of the switching process. For example, when the first network device has not determined the target base station, that is, before the first network device makes a switching decision, the second network device may include one or more candidate base stations, including the target base station; when the first network device has made a switching decision and determined the target base station, the second network device may include the target base station.

[0066] In a possible embodiment of the present application, before the terminal device performs cell switching, the first network device may send the first information to the terminal device through other signaling, for example, the first network device carries the first information in downlink control information (DCI) and sends it to the terminal device in the switching preparation phase. The signaling may include RRC signaling, multimedia access control (MAC) control element (CE), DCI and newly defined signaling, which is not limited in the embodiment of the present application.

[0067] Optionally, the first information may be configured by the first network device, the second network device or the LMF. When the first information is configured by the first network device, the first network device may carry the first information in the measurement configuration message or the switching command, or send it to the terminal device through signaling; when the first information is configured by the second network device or the LMF, the first network device may receive the first information from the second network device and / or the LMF, and transmit the first information in a transparent manner (without any modification), carry it in the measurement configuration message or the switching command, or send it to the terminal device through signaling; when the first information is configured by the LMF, the first information may be sent to the terminal device through the LTE Positioning Protocol (LPP) protocol data unit (PDU), which is not limited in this embodiment of the present application.

[0068] Further, when the LMF configures the first information, the network devices in the network device set information may report the recommended first information to the LMF before the LMF configures the first information. Optionally, when the first network device or the second network device configures the first information, the first network device or the second network device may report the first information to the LMF after configuring the first information.

[0069] S320. The terminal device receives the first information from the network device.

[0070] S330. The terminal device sends second information according to the first information.

[0071] Wherein, the second information includes SRS and / or PRS measurement results, which are used to determine the location information of the terminal device. After the terminal device receives the first information, the terminal device can determine the configuration information for positioning based on the SRS configuration information and / or PRS configuration information contained in the first information. For example, when the first information contains SRS configuration information, the terminal device determines the SRS configuration information as the configuration information for positioning; when the first information contains PRS configuration information, the terminal device determines the PRS configuration information as the configuration information for positioning. The terminal device then sends the second information based on the positioning configuration information. The SRS configuration information may include but is not limited to: SRS resource set and SRS transmission period, and the PRS configuration information may include but is not limited to: PRS resource set and PRS transmission period.

[0072] Further, the SRS configuration information may also include SRS transmission activation information. In some examples, the SRS transmission activation information may also be sent to the terminal device via separate signaling. The PRS configuration information may also include PRS transmission activation information. In some examples, the PRS transmission activation information may also be sent via separate signaling. The separate signaling may include RRC signaling, MAC CE, DCI, and newly defined signaling, which is not limited in the embodiments of the present application.

[0073] It should be noted that, when the first information includes SRS configuration information and PRS configuration information, the terminal device can randomly determine the configuration information used for positioning, or can determine it according to certain rules. For example, the terminal device can use PRS configuration information when the moving speed is greater than a threshold, and use SRS configuration information when the moving speed is less than or equal to the threshold. This embodiment of the present application is not limited to this.

[0074] In an embodiment of the present application, if the first information includes SRS configuration information and network device set information, and the second information includes SRS, the terminal device sending the second information according to the first information may include: the terminal device sends the SRS to the network devices in the network device set information according to the first information, and the SRS is used to determine the location information of the terminal device. After receiving the SRS, the first network device measures the SRS, obtains the SRS measurement result, and sends the SRS measurement result to the LMF.

[0075] Specifically, the terminal device may periodically send an SRS to the network devices in the network device set information according to an SRS sending period. The network devices in the network device set information that receive the SRS measure the SRS, obtain an SRS measurement result, and send the measured SRS measurement result to the LMF. The LMF may determine the location information of the terminal device through a location estimation algorithm based on the SRS measurement result of the network device and the location information of the network device stored in the LMF.

[0076] Furthermore, when the first information also includes beam information and / or spatial direction information, the terminal device may send an SRS to the network devices in the network device set information in the beam direction in the SRS resource set.

[0077] In another embodiment of the present application, after receiving the SRS, the first network device measures the SRS to obtain an SRS measurement result. Meanwhile, the first network device may also receive SRS measurement results from a second network device and at least one adjacent network device of the first network device.

[0078] Specifically, after receiving the SRS, the network devices in the network device set information measure the SRS to obtain respective SRS measurement results. Among them, the second network device and / or at least one adjacent network device of the first network device can send the measured SRS measurement results to the first network device. The first network device can determine the location information of the terminal device through a position estimation method based on the SRS measurement results and their location information from the second network device and / or the adjacent network device, as well as its own SRS measurement results and location information. In some examples, when the first information also includes TRP information and / or a cell to be measured, the first network device can also receive SRS measurement results from the TRP and / or the base station corresponding to the cell to be measured, and determine the location information of the terminal device based on the SRS measurement results.

[0079] Optionally, when the first information includes TRP information and / or a list of cells to be measured, the terminal device may also send an SRS to a transceiver point (TRP) and / or a base station corresponding to the cell to be measured according to the first information. After receiving the SRS, the TRP and / or the base station corresponding to the cell to be measured perform a measurement to obtain an SRS measurement result, and then send the SRS measurement result to the LMF.

[0080] In another embodiment of the present application, if the first information includes PRS configuration information and network device set information, the second information includes PRS measurement results, the terminal device sends the second information according to the first information, including: the terminal device monitors the PRS from the network device in the network device set information according to the first information, and sends the PRS measurement results to the network device and / or LMF in the network device set information, and the PRS measurement results are used to determine the location information.

[0081] The terminal device periodically monitors the PRS from the network device in the network device set information according to the PRS sending period. After monitoring the PRS, the terminal device measures the PRS that sends the downlink, that is, measures the PRS on the communication link from the network device that sends the PRS to the terminal device, and obtains the PRS measurement result of the downlink. After measuring all monitored PRSs, all measured PRS measurement results are sent to the network devices and / or LMF in the network device set information.

[0082] Furthermore, when the first information also includes beam information and / or spatial direction information, the terminal device may monitor the PRS in the beam direction of the PRS resource set. The terminal device may also send the PRS measurement result using resources in the PRS resource set and / or the beam direction in the beam information.

[0083] Among them, the network devices in the network device set information can send PRS to the terminal device, that is, the first network device, the second network device, and at least one of the at least one adjacent network devices of the first network device send PRS to the terminal device. After the LMF configures the first information or receives the reported first information, if the first information includes PRS configuration information, the LMF can instruct the network devices in the network device set information to send PRS to the terminal device. In some examples, when the first information includes TRP information and / or a list of cells to be measured, the TPR and / or the base station corresponding to the cell to be measured can also send PRS to the terminal device according to the instruction of the LMF. After the terminal device monitors the PRS of the base station corresponding to the TPR and / or the cell to be measured, it can send the PRS measurement result of the PRS to the TPR and / or the base station corresponding to the cell to be measured.

[0084] Optionally, the method further includes: the terminal device determining the location information terminal device according to the PRS. When the first network device receives the PRS measurement result, the first network device determines the location information according to the PRS measurement result.

[0085] The terminal device determining the location information according to the PRS includes: the terminal device measuring the PRS of the network device set information, obtaining the PRS measurement result, and determining the location information according to the PRS measurement result.

[0086] Specifically, when the first information also includes coordinate information, after measuring all monitored PRSs, the terminal device can combine all PRS measurement results with the coordinate information of the network devices in the network device set information, and determine the location information of the terminal device through a position estimation algorithm. Similarly, after receiving the PRS measurement result, the network device in the network device set information can combine the PRS measurement result with its own position and / or the known positions of other network devices to determine the location information of the terminal device. In some examples, when the first information also includes TRP information and / or a list of cells to be measured, the PRS measurement result can also be combined with the coordinate information of the TRP and / or the base station corresponding to the cell to be measured to determine the location information of the terminal device. The TRP and / or the base station corresponding to the cell to be measured combines the PRS measurement result with its own position and / or the known positions of other TRPs and / or base stations corresponding to the cell to be measured to determine the location information of the terminal device.

[0087] S340. The first network device receives second information from the terminal device.

[0088] In an embodiment of the present application, the method further includes: the terminal device receives the location information from at least one of the first network device, the LMF, and the second network device; the terminal device determines the TA according to the location information. The first network device receives the location information from the LMF and / or the second network device; the first network device determines the TA according to the location information.

[0089] When the first information includes SRS configuration information, after the LMF determines the location information according to the SRS measurement result sent by the network device in the network device set information, the LMF can send the location information to the terminal device and / or the network device in the network device set information. After receiving the location information, the network device in the network device set information can also send the location information to the terminal device and / or other network devices in the network device set information. For example, the LMF can send the location information of the terminal device to at least one of the terminal device, the first network device, and the second network device. When the first network device receives the location information of the terminal device, the first network device can send the location information of the terminal device to the terminal device and / or the second network device; when the second network device receives the location information of the terminal device, the second network device can send the location information of the terminal device to the terminal device and / or the first network device. In some examples, after determining the location information, the LMF can send the location information to at least one of the terminal device, TRP, and the base station corresponding to the cell to be measured. After receiving the location information, the TRP and / or the base station corresponding to the cell to be measured may also send the location information to at least one of the terminal device, other TRPs, and other base stations corresponding to the cell to be measured.

[0090] In an embodiment of the present application, when the first information is carried in the measurement configuration message, the method also includes: the terminal device reports the measurement result to the first network device according to the measurement configuration message; the first network device receives the measurement result from the terminal device, and makes a switching decision based on the measurement result; the first network device sends a switching request to the second network device, and the switching request carries the location information and / or the TA; the first network device receives a switching confirmation message from the second network device, and the switching confirmation message carries the TA; the first network device sends a switching request to the second network device, and the switching request carries the location information and / or the TA; the terminal device receives the switching command and performs cell switching.

[0091] Specifically, after sending the measurement configuration message, the first network device determines the target base station according to the measurement result reported by the receiving terminal device, that is, makes a handover decision. The measurement result is the measurement result of each cell in the cell list in the measurement configuration information by the terminal device. Based on the measurement result, the first network device selects a base station corresponding to a cell from the cell list for the terminal device as the target base station, that is, the second network device. The first network device may give priority to the cell where the location information of the terminal device has been obtained; the first network device may also select the base station corresponding to the cell with high priority or good service quality as the target base station according to the preset selection rule; it may also be based on the load balancing strategy, or it may be based on the service quality level identifier (QoS Class Identifier, QCI) of the terminal device's service. Of course, the embodiment of the present application does not limit the basis for other selections. After determining the target base station, the first network device needs to send a handover request to the target base station to notify the target base station that the terminal device needs to perform a cell handover. If the first network device has obtained the location information and / or the TA of the terminal device before sending the handover request, the first network device may carry the location information and / or the TA in the handover request. After receiving the switching request, if the target base station agrees to the access of the terminal device, it will send a switching confirmation message to the first network device, and the switching confirmation message will carry the TA configured by the target base station. After receiving the switching confirmation message, the first network device will send the switching command in the second switching confirmation message to the terminal device based on a transparent transmission manner, and carry the location information and / or the TA in the switching command to inform the terminal device of the current location information and / or TA.

[0092] Furthermore, the TA carried in the handover confirmation message may be a TA reconfigured by the target base station (second network device) according to the location information of the terminal device, or may be a TA compensated by the target base station according to the location information of the terminal device. In other words, when configuring the TA, the target base station may choose to compensate the uplink TA through the terminal device, or may directly compensate the uplink TA through the handover confirmation request.

[0093] It should be noted that, when the first network device does not obtain the location information and / or the TA, but the second network device obtains the location information and / or the TA, that is, when the LMF sends the location information to the second network device, the location information and / or TA carried in the switching request may be previously obtained by the first network device, or may be left blank. This embodiment of the present application does not limit this.

[0094] Furthermore, the terminal device may identify the location information and / or TA carried in the switching request to indicate whether the location information and / or TA are currently acquired.

[0095] In another embodiment of the present application, when the first information is carried in a switching command, the method further includes:

[0096] The terminal device performs cell switching according to the switching command; the terminal device receives third information from the second network device, the third information is carried in the resource scheduling message of the terminal device, and the third information includes the location information and / or the TA.

[0097] Among them, in order to ensure the uplink clock alignment of the terminal device, the terminal device may not immediately perform cell switching for the received switching command when the location information and / or the TA is not obtained, that is, the terminal device receives the third information before the terminal device performs cell switching. Furthermore, the resource scheduling message carrying the third information may be a downlink resource allocation message, such as DCI.

[0098] In a possible embodiment of the present application, the third information may also be the location information of the terminal device received by the terminal device from the first network device and / or the LMF, and the terminal device determines the TA based on the location information. Thus, the terminal device can initiate an uplink transmission to the second network device based on the location information / TA. In some examples, the third information may also be a PRS. For example, the terminal device obtains a PRS measurement result based on the received PRS, determines the location information of the terminal device based on the PRS measurement result, and thereby initiates an uplink transmission to the second network device based on the location information / TA. Of course, the embodiments of the present application do not limit other implementation methods.

[0099] It should be noted that when the terminal device fails to obtain the location information and / or the TA, it does not immediately execute cell switching for the received switching command. This may be based on the decision of the terminal device itself or on the instructions of the first network device and / or the second network device. This embodiment of the present application does not limit this.

[0100] Furthermore, if the terminal device still fails to obtain the location information and / or the TA within a certain period of time after receiving the switching command, the terminal device may initiate the acquisition of the location information and / or the TA again, for example, sending SRS to the network device set information again and / or continuously monitoring PRS from the network device set information; the terminal device may also directly perform cell switching. This embodiment of the present application is not limited to this.

[0101] It can be seen that in an embodiment of the present application, a terminal device receives first information from a first network device, the first information includes SRS configuration information and / or PRS configuration information, the first information is carried in a measurement configuration message or a switching command, and then sends second information based on the first information, the second information is used to determine the location information of the terminal device, and the location information of the terminal device is determined based on the positioning configuration information, thereby avoiding the uplink clock asynchronization problem caused by the terminal device and the network device obtaining different location information of the terminal device in the switching without a random access process, thereby optimizing the performance of the terminal device.

[0102] under Figures 4 to 7 The implementation method of the embodiment of the present application is further explained by combining different sending methods of the first information and positioning configuration information.

[0103] See also Figure 4 , Figure 4 is a flow chart of another method for determining a position provided by an embodiment of the present application. The method can be applied to Figure 1 In the communication system shown in FIG. Figure 4 As shown, the method comprises the following steps:

[0104] S410. The first network device sends a measurement configuration message to the terminal device, where the measurement configuration message carries first information.

[0105] The first information includes SRS configuration information, and the SRS configuration information includes but is not limited to: an SRS resource set and an SRS transmission period.

[0106] Optionally, the first information may also include: network device set information, beam information. The network device set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to which the terminal device is about to switch. The beam information and spatial direction information are the beam directions used by the network devices in the network device set information to send SRS. The coordinate information is the location information of the network devices in the network device set information.

[0107] Further, the SRS configuration information may also include SRS transmission activation information. In some examples, the SRS transmission activation information may also be sent to the terminal device via separate signaling. The separate signaling may include RRC signaling, MAC CE, DCI, and newly defined signaling, which is not limited in the embodiments of the present application.

[0108] S420. The terminal device sends an SRS to the first network device and the second network device.

[0109] In an embodiment of the present application, the terminal device can periodically send SRS to the network devices in the network device set information on the SRS resources in the SRS resource set and / or the beam direction of the beam information based on the SRS sending period, SRS resource set and / or beam information.

[0110] The second network device may include one or more candidate base stations, and the candidate base stations include a target base station.

[0111] S430. The first network device and the second network device measure the SRS, obtain an SRS measurement result, and send the SRS measurement result to the LMF.

[0112] S440. The first network device receives the location information of the terminal device from the LMF.

[0113] In an embodiment of the present application, after receiving the SRS measurement result, the LMF can determine the location information of the terminal device through a position estimation algorithm based on the SRS measurement result of the network device and the location information of the network device stored in the LMF, and send the location information to the first network device.

[0114] S450. The terminal device reports a measurement result to the first network device according to the measurement configuration information.

[0115] After receiving the measurement configuration information, the terminal device can perform measurements according to the content of the measurement configuration information (for example, same frequency, different frequency, different technology), and then report the measurement results to the first network.

[0116] In a possible example, the measurement configuration information may also include a measurement object, a reporting configuration, a measurement identifier, and a measurement period. Each measurement object may indicate a service cell to be measured, a list of cell offsets that the network may configure, a list of blacklist cells, and a list of whitelist cells. The terminal device may perform event evaluation and measurement reporting on cells in the whitelist in event evaluation and measurement reports without performing any operations on cells in the blacklist. Each measurement object corresponds to one or more reporting configurations, and the reporting configuration may include a reporting format. The reporting format may be the measurement reporting amount of the terminal device for each candidate cell. The reporting configuration may also include other relevant information, for example, the maximum number of service cells reported by the terminal device. The measurement identifier associates the measurement object with the reporting configuration. A measurement object can be associated with multiple reporting configurations at the same time, and a reporting configuration can also be associated with multiple measurement objects at the same time, distinguished by the measurement identifier. The measurement interval is the period during which the terminal device performs measurements.

[0117] Among them, the measurement report performed by the terminal device can be an event-triggered report or an event-triggered periodic report. Event-triggered reporting can be that the terminal device meets the measurement event entry threshold configured by the network device and lasts for a period of time, triggering the sending of the measurement report, and the measurement reporting process ends after the measurement report is sent once. Event-triggered periodic reporting can be that the terminal device meets the measurement event entry threshold configured by the network and lasts for a period of time, triggering the sending of the measurement report. After the report is triggered, the timer between multiple measurements and the counter of the number of measurements are started, and the measurement reporting process ends only after the number of reports reaches the requirement. The embodiments of the present application are not limited here.

[0118] Optionally, the reporting number of the event-triggered report can be 1, the reporting interval can be any value, and the terminal device can ignore the reporting interval. The reporting number of event-triggered periodic reports can be greater than 1, and the reporting interval sets the reporting period timer according to the interval parameter configured by the network device.

[0119] S460: The first network device receives a measurement result from the terminal device, and makes a switching decision based on the measurement result.

[0120] The first network device may determine the target cell from one or more candidate cells according to the measurement report, that is, the first network device may determine the target base station corresponding to the target cell from multiple candidate base stations in the second network device according to the measurement report.

[0121] S470: The first network device sends a switching request to the second network device, where the switching request carries the location information and / or TA.

[0122] After receiving the location information, the first network device can determine the TA according to the location information. When the first network device sends a handover request to the second network device (target base station), the location information and / or TA can be carried in the handover request, so that the second network device can obtain the location information and / or TA of the terminal device, thereby being able to compensate for the misalignment of the uplink clock.

[0123] S480. The first network device receives a switching confirmation message from the second network device, where the switching confirmation message carries the TA.

[0124] After receiving the handover request, if the terminal device is allowed to access, a handover confirmation message will be sent to the first network device, and the configured TA will be carried in the handover confirmation message. The TA carried in the handover confirmation message can be a TA reconfigured by the second network device according to the location information, or a TA compensated by the second network device according to the location information of the terminal device. In other words, when configuring the TA, the second network device can choose to compensate the uplink TA through the terminal device, or directly compensate the uplink TA through the handover confirmation request.

[0125] S490. The first network device sends a switching command to the terminal device, where the switching command carries the location information and / or the TA.

[0126] In an embodiment of the present application, the first network device carries the location information and / or the TA in the switching command to enable the terminal device to obtain its current location information and / or TA, so that when the second network device chooses to compensate for the uplink TA through the terminal device, the terminal device can achieve uplink clock alignment with the second network device.

[0127] It can be seen that in the embodiment of the present application, the first network device carries the first information by measuring the configuration information, so that the terminal device and the second network device can perform switching based on the acquired location information of the terminal device, thereby avoiding the uplink clock asynchronization problem caused by the terminal device and the network device acquiring different location information of the terminal device in the switching without a random access process, thereby optimizing the performance of the terminal device.

[0128] See also Figure 5 , Figure 5 A flow chart of a location confirmation method provided in an embodiment of the present application, which can be applied to Figure 1 In the communication system shown in FIG. Figure 5 As shown, the method comprises the following steps:

[0129] S510. The first network device sends a switching command to the terminal device, where the measurement configuration message carries first information.

[0130] S520: The terminal device sends an SRS to the first network device and the second network device.

[0131] S530. The first network device and the second network device measure the SRS, obtain an SRS measurement result, and send the SRS measurement result to the LMF.

[0132] S540. The first network device receives the location information of the terminal device from the LMF.

[0133] It should be noted that the second network device in the embodiment of the present application may be a target base station.

[0134] The specific implementation of the above S510-540 can refer to Figure 4 The specific implementation described in S410-440 will not be repeated here.

[0135] S550. The first network device sends the location information and / or TA to the second network device.

[0136] After receiving the location information, the first network device can determine the TA based on the location information, and send the location information and / or TA to the second network device, so that the second network device can obtain the location information and / or TA of the terminal device, thereby being able to compensate when the uplink clock is not aligned.

[0137] S560. The terminal device receives third information from the second network device, where the third information includes the location information and / or TA.

[0138] After receiving the location information and / or TA, the second network device may send third information to the terminal device in order to compensate for the uplink TA. The third information may be carried in a resource scheduling message of the terminal device, for example, DCI for downlink resource allocation of the terminal device. The third information may include the location information and / or TA, so that the terminal device obtains its current location information and / or TA, and the terminal device performs cell switching after obtaining the location information and / or TA.

[0139] It can be seen that in the embodiment of the present application, the first network device carries the first information through the switching command, so that the terminal device and the second network device can obtain the location information of the terminal device during the switching process, thereby avoiding the uplink clock asynchronization problem caused by the terminal device and the network device obtaining different location information of the terminal device in the switching without a random access process, thereby optimizing the performance of the terminal device.

[0140] See also Figure 6 , Figure 6 A flow chart of a location confirmation method provided in an embodiment of the present application, which can be applied to Figure 1 In the communication system shown in FIG. Figure 6 As shown, the method comprises the following steps:

[0141] S610. The first network device sends a measurement configuration message to the terminal device, where the measurement configuration message carries first information.

[0142] The first information includes PRS configuration information, and the PRS configuration information includes but is not limited to: a PRS resource set and a PRS transmission period.

[0143] Optionally, the first information may also include: network device set information, beam information and coordinate information. The network device set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to which the terminal device is about to switch. The beam information is the beam direction of the PRS monitored by the terminal device. The coordinate information is the location information of the network device in the network device set information.

[0144] Further, the PRS configuration information may also include PRS transmission activation information. In some examples, the PRS transmission activation information may also be sent to the terminal device via separate signaling. The separate signaling may include RRC signaling, MAC CE, DCI, and newly defined signaling, which is not limited in the embodiments of the present application.

[0145] S620: The terminal device monitors PRS from the first network device and the second network device.

[0146] In an embodiment of the present application, the terminal device periodically listens to the PRS sent by the first network device and the second network device on the PRS resource set and / or beam direction according to the PRS sending period, PRS resource set and / or beam information.

[0147] The second network device may include one or more candidate base stations, and the candidate base stations include a target base station.

[0148] S630: The terminal device measures the PRS, obtains a PRS measurement result, and sends the PRS measurement result to the LMF.

[0149] After monitoring the PRS, the terminal device measures the PRS sending the downlink, that is, measures the PRS on the communication link from the first network device and / or the second network device sending the PRS to the terminal device, and obtains the PRS measurement result of the downlink. After measuring all monitored PRSs, all measured PRS measurement results are sent to the LMF.

[0150] S640. The first network device receives the location information of the terminal device from the LMF.

[0151] S650. The terminal device reports a measurement result to the first network device according to the measurement configuration information.

[0152] S660: The first network device receives a measurement result from the terminal device, and makes a switching decision based on the measurement result.

[0153] S670: The first network device sends a switching request to the second network device, where the switching request carries the location information and / or TA.

[0154] S680. The first network device receives a switching confirmation message from the second network device, where the switching confirmation message carries the TA.

[0155] S690. The first network device sends a switching command to the terminal device, where the switching command carries the location information and / or the TA.

[0156] The specific implementation of the above S640-S690 can refer to Figure 4 The specific implementation methods described in S440-S490 will not be repeated here.

[0157] See also Figure 7 , Figure 7 A flow chart of a location confirmation method provided in an embodiment of the present application, which can be applied to Figure 1 In the communication system shown in FIG. Figure 7 As shown, the method comprises the following steps:

[0158] S710. The first network device sends a switching command to the terminal device, where the measurement configuration message carries first information.

[0159] S720: The terminal device monitors PRS from the first network device and the second network device.

[0160] S730. The terminal device measures the PRS, obtains a PRS measurement result, and sends the PRS measurement result to the LMF.

[0161] It should be noted that the second network device in the embodiment of the present application may be a target base station.

[0162] The specific implementation of the above S710-S730 can refer to Figure 6 The specific implementation of S610-S630 described in will not be repeated here.

[0163] S740. The first network device receives the location information of the terminal device from the LMF.

[0164] S750: The first network device sends the location information to the second network device.

[0165] S760. The terminal device receives third information from the second network device, where the third information includes the location information and / or TA.

[0166] The specific implementation of the above S750-S760 can refer to Figure 5 The specific implementation described in S550-S560 will not be repeated here.

[0167] Combined with the above Figures 3 to 7 , describes in detail the location determination method of the embodiment of the present application, and will be combined with Figure 8 , a position determination device according to an embodiment of the present application is described in detail.

[0168] See also Figure 8 , Figure 8 The embodiment of the present application provides a position determination device 800 , which may be a terminal device, a network device, or a chip in a network device. The device 800 includes: a transceiver unit 810 and a processing unit 820 .

[0169] In a possible implementation, the device 800 is used to execute various processes and steps corresponding to the terminal device in the above-mentioned location determination method.

[0170] The transceiver unit 810 is configured to receive first information from a first network device, where the first information includes SRS configuration information and / or PRS configuration information, and the first information is carried in a measurement configuration message or a handover command;

[0171] The transceiver unit 810 is further used to send second information according to the first information, where the second information is used to determine the location information of the terminal device.

[0172] Optionally, the first information also includes at least one of the following: a list of cells to be measured, TPR information, network device set information, beam information, spatial direction information and coordinate information, and the network device set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to which the terminal device is about to switch.

[0173] Optionally, the second information includes SRS; in terms of sending the second information according to the first information, the transceiver unit 810 is specifically used to: send the SRS to the network device in the network device set information according to the first information, and the SRS is used to determine the location information.

[0174] Optionally, the second information includes PRS measurement results; in terms of sending the second information based on the first information, the transceiver unit 810 is specifically used to: monitor the PRS from the network device set information according to the first information, and send the PRS measurement results to the network devices and / or LMF in the network device set information, and the PRS measurement results are used to determine the location information.

[0175] Optionally, the transceiver unit 810 is further used to: receive the location information from at least one of the first network device, LMF, and the second network device.

[0176] The processing unit 820 is configured to determine a timing advance TA according to the location information.

[0177] Optionally, the processing unit 820 is further configured to determine the location information according to the PRS.

[0178] Optionally, in terms of determining the location information according to the PRS, the processing unit 820 is further specifically configured to: measure the PRS, obtain the PRS measurement result, and determine the location information according to the PRS measurement result.

[0179] Optionally, when the first information is carried in a measurement configuration message, the transceiver unit 810 is further configured to report a measurement result to the first network device according to the measurement configuration message;

[0180] The processing unit 820 is further configured to receive the switching command from the first network device and perform cell switching, wherein the switching command includes the location information and / or the TA.

[0181] Optionally, in the case where the first information is carried in a handover command, the processing unit 820 is further configured to: perform cell handover according to the handover command;

[0182] The transceiver unit 810 is further used to: receive third information from the second network device, the third information is carried in the resource scheduling message of the terminal device, and the third information includes the location information and / or the TA.

[0183] In another possible implementation, the apparatus 800 is used to execute various processes and steps corresponding to the first network device in the above-mentioned location determination method.

[0184] The transceiver unit 810 is configured to send a first message to a terminal device, where the first information includes SRS configuration information and / or PRS configuration information, and the first information is carried in a measurement configuration message or a switching command;

[0185] The transceiver unit 810 is further used to receive second information from the terminal device, where the second information is used to determine the location information of the terminal device.

[0186] Optionally, the first information also includes at least one of the following: a list of cells to be measured, TPR information, network device set information, beam information, spatial direction information and coordinate information, and the network device set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to which the terminal device is about to switch.

[0187] Optionally, the transceiver unit 810 is further used to receive the first information from the second network device and / or LMF.

[0188] Optionally, the second information includes SRS, and the processing unit 820 is used to measure the SRS, obtain the SRS measurement result, and send the SRS measurement result to the LMF.

[0189] Optionally, the second information includes a PRS measurement result, and the transceiver unit 810 is further used to send the PRS to the terminal device.

[0190] Optionally, the transceiver unit 810 is further configured to receive the location information from the LMF and / or the second network device;

[0191] The processing unit 820 is further configured to determine the TA according to the location information.

[0192] Optionally, the processing unit 820 is further configured to determine the location information according to the PRS measurement result.

[0193] Optionally, the transceiver unit 810 is further used to send the location information and / or the TA to the second network device and / or the terminal device.

[0194] Optionally, when the first information is carried in the measurement configuration message, the transceiver unit 810 is also used to receive the measurement results from the terminal device; send a switching request to the second network device, the switching request carrying the location information and / or the TA; receive a switching confirmation message from the second network device, the switching confirmation message carrying the TA; send a switching command to the terminal device, the switching command carrying the location information and / or the TA.

[0195] The processing unit 820 is further configured to make a handover decision according to the measurement result.

[0196] It should be understood that the device 800 here is embodied in the form of a functional unit. The term "unit" here may refer to an application specific integrated circuit (ASIC), an electronic circuit, a processor (such as a shared processor, a proprietary processor or a group processor, etc.) and a memory for executing one or more software or firmware programs, a merged logic circuit and / or other suitable components that support the described functions. In an optional example, those skilled in the art can understand that the device 800 can be specifically a terminal device, a first network device or a second network device in the above-mentioned embodiment, and the device 800 can be used to execute the various processes and / or steps corresponding to the terminal device, the first network device or the second network device in the above-mentioned method embodiment. To avoid repetition, it will not be repeated here.

[0197] The apparatus 800 of each of the above schemes has the function of implementing the corresponding steps executed by the terminal device, the first network device or the second network device in the above method; the function can be implemented by hardware, or by hardware executing the corresponding software. The hardware or software includes one or more modules corresponding to the above functions; for example, the sending unit can be replaced by a transmitter, the receiving unit can be replaced by a receiver, and other units, such as the determination unit, can be replaced by a processor, respectively performing the sending and receiving operations and related processing operations in each method embodiment.

[0198] In the embodiments of the present application, Figure 8 The device 800 in the embodiment may also be a chip or a chip system, such as a system on chip (SoC). Correspondingly, the receiving unit and the sending unit may be the transceiver circuit of the chip, which is not limited here.

[0199] Fig. 9A computer device 900 provided in an embodiment of the present application is shown, and the computer device 900 includes a processor 910, a memory 920, a transceiver 930, and one or more programs, wherein the one or more programs are stored in the memory 920 and are configured to be executed by the processor 910.

[0200] In a possible implementation, the computer device is a terminal device, and the program includes instructions for executing the following steps:

[0201] Receive first information from a first network device, the first information including SRS configuration information and / or PRS configuration information, the first information being carried in a measurement configuration message or a switching command; send second information based on the first information, the second information being used to determine location information of the terminal device.

[0202] Optionally, the first information also includes at least one of the following: a list of cells to be measured, TPR information, network device set information, beam information, spatial direction information and coordinate information, and the network device set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to which the terminal device is about to switch.

[0203] Optionally, the second information includes an SRS; in terms of sending the second information according to the first information, the program includes instructions specifically for performing the following steps:

[0204] The SRS is sent to the network device in the network device set information according to the first information, and the SRS is used to determine the location information.

[0205] Optionally, the second information includes a PRS measurement result; in terms of sending the second information according to the first information, the program includes instructions specifically for performing the following steps:

[0206] The PRS from the network device set information is monitored according to the first information, and the PRS measurement result is sent to the network device and / or LMF in the network device set information, where the PRS measurement result is used to determine the location information.

[0207] Optionally, the program includes instructions for further performing the following steps:

[0208] The location information is received from at least one of the first network device, LMF, and the second network device; and the terminal device determines the time advance TA according to the location information.

[0209] Optionally, the program includes instructions for further performing the following steps:

[0210] The location information is determined based on the PRS.

[0211] Optionally, the program includes instructions for further performing the following steps:

[0212] The PRS is measured to obtain the PRS measurement result, and the location information is determined according to the PRS measurement result.

[0213] Optionally, when the first information is carried in a measurement configuration message, the program includes instructions further for performing the following steps:

[0214] Reporting the measurement result to the first network device according to the measurement configuration message;

[0215] The switching command is received from the first network device, and the cell switching is performed, wherein the switching command includes the location information and / or the TA.

[0216] Optionally, when the first information is carried in a switching command, the program includes instructions for further performing the following steps:

[0217] Execute cell switching according to the switching command;

[0218] Receive third information from the second network device, where the third information is carried in a resource scheduling message of the terminal device, and the third information includes the location information and / or the TA.

[0219] In another possible implementation, the computer device is a first network device, and the program includes instructions for executing the following steps:

[0220] Sending a first message to a terminal device, where the first information includes SRS configuration information and / or PRS configuration information, and the first information is carried in a measurement configuration message or a switching command;

[0221] Second information is received from the terminal device, where the second information is used to determine location information of the terminal device.

[0222] Optionally, the first information also includes at least one of the following: a list of cells to be measured, TPR information, network device set information, beam information, spatial direction information and coordinate information, and the network device set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to which the terminal device is about to switch.

[0223] Optionally, the program includes instructions for further performing the following steps:

[0224] Receive the first information from the second network device and / or LMF.

[0225] Optionally, the second information includes an SRS, and the program includes instructions for further performing the following steps:

[0226] The SRS is measured to obtain an SRS measurement result, and the SRS measurement result is sent to the LMF.

[0227] Optionally, the second information includes a PRS measurement result, and the program includes instructions for further performing the following steps:

[0228] A PRS is sent to the terminal device.

[0229] Optionally, the program includes instructions for further performing the following steps:

[0230] The location information is received from the LMF and / or the second network device; and the first network device determines the TA according to the location information.

[0231] Optionally, the program includes instructions for further performing the following steps:

[0232] The location information is determined according to the PRS measurement result.

[0233] Optionally, the program includes instructions for further performing the following steps:

[0234] Send the location information and / or the TA to the second network device and / or the terminal device.

[0235] Optionally, when the first information is carried in the measurement configuration message, the program includes instructions further used to perform the following steps:

[0236] receiving a measurement result from the terminal device, and making a handover decision according to the measurement result;

[0237] Sending a handover request to the second network device, where the handover request carries the location information and / or the TA;

[0238] receiving a switching confirmation message from the second network device, where the switching confirmation message carries the TA;

[0239] A switching command is sent to the terminal device, where the switching command carries the location information and / or the TA.

[0240] It should be understood that the memory 920 may include a read-only memory and a random access memory, and provide instructions and data to the processor. A portion of the memory may also include a non-volatile random access memory. For example, the memory may also store information about the device type.

[0241] It should be understood that in the embodiment of the present application, the processor 910 of the above-mentioned device may be a central processing unit (CPU), and the processor 910 may also be other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field programmable gate arrays (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0242] In the implementation process, the backup steps of the above method can be completed by the hardware integrated logic circuit in the processor or the instructions in the form of software. The steps of the method disclosed in conjunction with the embodiment of the present application can be directly embodied as a hardware processor to be executed, or a combination of hardware and software units in the processor to be executed. The software unit can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor executes the instructions in the memory, and completes the steps of the above method in conjunction with its hardware. To avoid repetition, it is not described in detail here.

[0243] An embodiment of the present application also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute part or all of the steps described by the terminal device, the first network device or the second network device in the above method embodiment.

[0244] The embodiment of the present application also provides a computer program product, wherein the computer program product includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to execute some or all of the steps described by the terminal device, the first network device, or the second network device in the above method. The computer program product can be a software installation package.

[0245] It should be understood that the term "and / or" in this article is only a description of the association relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0246] Those of ordinary skill in the art will appreciate that the various method steps and units described in the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the steps and components of each embodiment have been generally described in the above description according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those of ordinary skill in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0247] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0248] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, or it can be an electrical, mechanical or other form of connection.

[0249] The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0250] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0251] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk and other media that can store program code.

[0252] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed in the present application, and these modifications or replacements should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for determining a position, characterized in that: The method comprises: The terminal device receives first information from the first network device, where the first information includes channel sounding reference signal SRS configuration information and / or position reference signal PRS configuration information, and the first information is carried in a measurement configuration message; The terminal device sends second information according to the first information, where the second information is used to determine the location information of the terminal device; The terminal device reports the measurement result to the first network device according to the measurement configuration message; The terminal device receives a switching command from the first network device and performs cell switching, the switching command including the location information and / or the timing advance TA configured by the second network device, the TA configured by the second network device being a TA reconfigured by the second network device according to the location information of the terminal device or a TA compensated by the second network device according to the location information of the terminal device.

2. The method according to claim 1, characterized in that: The first information also includes at least one of the following: a list of cells to be measured, TPR information of transceiver points, network equipment set information, beam information, spatial direction information and coordinate information, and the network equipment set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to which the terminal device is about to switch.

3. The method according to claim 2, characterized in that: The second information includes SRS; The terminal device sending the second information according to the first information includes: The terminal device sends the SRS to the network devices in the network device set information according to the first information, and the SRS is used to determine the location information.

4. The method according to claim 2, characterized in that: The second information includes a PRS measurement result; The terminal device sending the second information according to the first information includes: The terminal device monitors the PRS from the network device in the network device set information according to the first information, and sends the PRS measurement result to the network device and / or location management function LMF in the network device set information, and the PRS measurement result is used to determine the location information.

5. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: The terminal device receives the location information from at least one of the first network device, the LMF, and the second network device; The terminal device determines a time advance TA according to the location information.

6. The method according to claim 4, characterized in that: The method further comprises: The terminal device determines the location information based on the PRS.

7. The method according to claim 6, characterized in that: The terminal device determining the location information according to the PRS includes: The terminal device measures the PRS, obtains the PRS measurement result, and determines the location information according to the PRS measurement result.

8. The method according to claim 5, characterized in that: In the case where the first information is carried in a handover command, the method further includes: The terminal device performs cell switching according to the switching command; The terminal device receives third information from the second network device, where the third information is carried in a resource scheduling message of the terminal device, and the third information includes the location information and / or the TA.

9. A method for determining a position, characterized in that: The method comprises: The first network device sends first information to the terminal device, where the first information includes SRS configuration information and / or PRS configuration information, and the first information is carried in a measurement configuration message; The first network device receives second information from the terminal device, where the second information is used to determine location information of the terminal device; The first network device receives the measurement result from the terminal device and makes a switching decision according to the measurement result; The first network device sends a handover request to the second network device, where the handover request carries the location information and / or the timing advance TA; The first network device receives a switching confirmation message from the second network device, where the switching confirmation message carries a TA configured by the second network device, where the TA configured by the second network device is a TA reconfigured by the second network device according to the location information of the terminal device or a TA compensated by the second network device according to the location information of the terminal device; The first network device sends a switching command to the terminal device, where the switching command carries the location information and / or the TA configured by the second network device.

10. The method according to claim 9, characterized in that: The first information also includes at least one of the following: a list of cells to be measured, TPR information, network device set information, beam information, spatial direction information and coordinate information, and the network device set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to which the terminal device is about to switch.

11. The method according to claim 10, characterized in that: The method further comprises: The first network device receives the first information from the second network device and / or the LMF.

12. The method according to claim 11, characterized in that: The second information includes an SRS, and the method further includes: The first network device measures the SRS, obtains an SRS measurement result, and sends the SRS measurement result to the LMF.

13. The method according to claim 11, characterized in that: The second information includes a PRS measurement result, and the method further includes: The first network device sends a PRS to the terminal device.

14. The method according to any one of claims 11 to 13, characterized in that: The method further comprises: The first network device receives the location information from the LMF and / or the second network device; The first network device determines the TA according to the location information.

15. The method according to claim 13, characterized in that: The method further comprises: The first network device determines the location information according to the PRS measurement result.

16. The method according to any one of claims 11 to 13, characterized in that: The method further comprises: The first network device sends the location information and / or the TA to the second network device and / or the terminal device.

17. A position determination device, characterized in that: The device comprises: A transceiver unit, configured to receive first information from a first network device, where the first information includes SRS configuration information and / or PRS configuration information, and the first information is carried in a measurement configuration message; The transceiver unit is further configured to send second information according to the first information, where the second information is used to determine the location information of the terminal device; report the measurement result to the first network device according to the measurement configuration message; receive a switching command from the first network device, where the switching command includes the location information and / or the timing advance TA configured by the second network device, where the TA configured by the second network device is a TA reconfigured by the second network device according to the location information of the terminal device or a TA compensated by the second network device according to the location information of the terminal device; The apparatus further comprises a processing unit configured to perform cell switching.

18. The device according to claim 17, characterized in that: The first information also includes at least one of the following: a list of cells to be measured, TPR information, network device set information, beam information, spatial direction information and coordinate information, and the network device set information includes at least one of the following: the first network device, the second network device and at least one adjacent network device of the first network device, the first network device is the network device corresponding to the current service cell of the terminal device, and the second network device is the network device corresponding to the target cell to which the terminal device is about to switch.

19. The device according to claim 18, characterized in that The second information includes an SRS; in sending the second information according to the first information, The transceiver unit is specifically used to: send the SRS to the network device in the network device set information according to the first information, and the SRS is used to determine the location information.

20. The device according to claim 18, characterized in that The second information includes a PRS measurement result; in sending the second information according to the first information, The transceiver unit is specifically used to: monitor the PRS from the network device set information according to the first information, and send the PRS measurement result to the network device and / or LMF in the network device set information, and the PRS measurement result is used to determine the location information.

21. The device according to any one of claims 17 to 20, characterized in that: The transceiver unit is further configured to receive the location information from at least one of the first network device, the location management function LMF, and the second network device; The processing unit is further configured to determine a timing advance TA according to the location information.

22. The device according to claim 20, characterized in that The processing unit is further configured to determine the location information according to the PRS.

23. The device according to claim 22, characterized in that In determining the location information according to the PRS, the processing unit is specifically configured to: The PRS is measured to obtain the PRS measurement result, and the location information is determined according to the PRS measurement result.

24. The device according to claim 17, characterized in that: In the case where the first information is carried in a switching command, The processing unit is further configured to execute cell switching according to the switching command; The transceiver unit is further used to receive third information from the second network device, where the third information is carried in a resource scheduling message of the terminal device, and the third information includes the location information and / or the TA.

25. A position determination device, characterized in that: A transceiver unit, configured to send first information to a terminal device, where the first information includes SRS configuration information and / or PRS configuration information, and the first information is carried in a measurement configuration message or a switching command; The transceiver unit is further used to receive second information from the terminal device, where the second information is used to determine the location information of the terminal device; The transceiver unit is further used to receive the measurement result from the terminal device; The transceiver unit is further configured to send a switching request to the second network device, wherein the switching request carries the location information and / or the timing advance TA; The transceiver unit is further used to receive a switching confirmation message from the second network device, where the switching confirmation message carries the TA configured by the second network device, where the TA configured by the second network device is a TA reconfigured by the second network device according to the location information of the terminal device or a TA compensated by the second network device according to the location information of the terminal device; The transceiver unit is further used to send a switching command to the terminal device, where the switching command carries the location information and / or the TA configured by the second network device; The device further includes: a processing unit, configured to make a switching decision according to the measurement result.

26. The device according to claim 25, characterized in that The first information also includes at least one of the following: a list of cells to be measured, TPR information, network device set information, beam information, spatial direction information and coordinate information, and the network device set information includes at least one of the following: a first network device, the second network device and at least one adjacent network device of the first network device, the first network device is a network device corresponding to the current service cell of the terminal device, and the second network device is a network device corresponding to the target cell to which the terminal device is about to switch.

27. The device according to claim 25, characterized in that The transceiver unit is further used to receive the first information from the second network device and / or LMF.

28. The device according to any one of claims 25 to 27, characterized in that: The second information includes SRS, The transceiver unit is further used to measure the SRS, obtain the SRS measurement result, and send the SRS measurement result to the LMF.

29. The device according to any one of claims 25 to 27, characterized in that: The second information includes a PRS measurement result, The transceiver unit is further used to send the PRS to the terminal device.

30. The device according to any one of claims 25 to 27, characterized in that: The transceiver unit is further configured to receive the location information from the location management function LMF and / or the second network device; The processing unit is further used to determine the TA according to the location information.

31. The device according to claim 29, characterized in that The processing unit is further configured to determine the location information according to the PRS measurement result.

32. The device according to claim 29, characterized in that The transceiver unit is further used to send the location information and / or the TA to the second network device and / or the terminal device.

33. A terminal device, characterized in that: The terminal device includes a processor, a memory, a transceiver, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for executing the steps in the method according to any one of claims 1 to 8.

34. A network device, characterized in that: The network device includes a processor, a memory, a transceiver, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, and the programs include instructions for executing the steps in the method according to any one of claims 9 to 16.

35. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute the method according to any one of claims 1 to 8.

36. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program for electronic data exchange, wherein the computer program enables a computer to execute the method according to any one of claims 9 to 16.

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