Signal transmission method and device

Abstract

The present application discloses a signal transmission method and device for realizing reference signal transmission of adaptive UE-specific RS resource configuration based on positioning measurement value quality indication. The present application provides a signal transmission method, comprising: receiving a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on the positioning measurement value quality indication determined by the terminal; and determining and reporting positioning information based on measuring the UE-specific RS.

Description

Technical Field

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

[0002] Existing technologies have determined the performance requirements for commercial applications of 5G positioning, including seven positioning performance levels: six absolute positioning performance requirements with horizontal accuracy ranging from 0.3m to 10m; vertical accuracy ranging from 2m to 3m; and one relative positioning performance requirement with horizontal accuracy of 0.2m and vertical accuracy of 0.2m. The seven positioning performances use confidence levels of 95%, 99% and 99.9%.

[0003] 3GPP (Third Generation Partnership Project) will introduce a variety of technologies for 5G New Radio (NR) positioning, including downlink observed time difference of arrival (OTDOA), enhanced cell ID (E-CID, i.e. timing advance (TA) + angle of arrival (AoA)) and multi-cell round-trip time (Multi-cell RTT, Multi-RTT).

[0004] OTDOA is a positioning method defined by the 3GPP protocol specification. The basic principle of OTDOA is that the user equipment (UE) measures the downlink positioning reference signal (PRS) sent from multiple transmission points (TP), which may also include downlink reference signals (DL-RS) to obtain the reference signal time difference (RSTD) measurement value reaching the UE, and reports them to the positioning server in the network to estimate the position of the UE. The positioning server is called the Location Management Function (LMF) in the next generation radio access network (NG-RAN). In the OTDOA positioning process, LMF must first obtain the OTDOA auxiliary information associated with the cell from the base station (BS) through the positioning protocol specified by 3GPP, such as NR Positioning Protocol A (NRPPa), such as: physical cell ID, antenna position of the cell and RS configuration. Then, the UE obtains OTDOA assistance information for supporting RSTD measurement from the LMF through the positioning protocol specified by 3GPP, such as the NR Positioning Protocol (NRPP).

[0005] The principle of E-CID (i.e. TA+AoA) is to calculate the position through the angle between the terminal and the target base station and the true north direction (i.e. AOA) and the terminal's timing advance (TA). E-CID positioning measurement values ​​include AOA, TA, eNB transmit and receive time difference measurement, and UE transmit and receive time difference measurement (Rx-Tx time difference). Among them, the specification stipulates the reporting mapping of AOA, TA, UE transmit and receive time difference measurement, as well as the accuracy requirements of UE transmit and receive time difference measurement.

[0006] The principle of Multi-RTT is that the terminal measures the downlink reference signal from the serving base station and one or more adjacent base stations to obtain the UE Rx-Tx time difference measurement value of different base stations, and reports the measurement value to the serving base station. All base stations then obtain the distance between the terminal and the base station or the timing advance (TA) based on the uplink timing measurement value, and then calculate the terminal position in combination with the antenna positions of all base stations. One advantage of Multiple-RTT is that the synchronization requirements between the base stations in the network are reduced.

[0007] Figure 1 The figure shows an OTDOA basic positioning process including "UE-triggered positioning information transmission process" and "LMF-triggered positioning information transmission process", which includes the following 11 steps:

[0008] Step 101: After the UE establishes a connection with the BS, the UE is in a radio resource control connected (RRC_CONNECTED) state.

[0009] Step 102: The positioning server sends a "request positioning capability" message to the UE, requesting the UE to notify the server of the positioning functions that the UE can support.

[0010] Step 103: The UE sends a "Provide Positioning Capability" message to respond to the positioning server. The "Provide Positioning Capability" message reports that the UE, i.e., the terminal, supports the positioning capability of NG-RAN OTDOA.

[0011] Step 104: When downlink positioning assistance data is needed, the UE sends a "request positioning assistance data" message to the positioning server, which includes a request for the positioning server to provide OTDOA assistance data.

[0012] Step 105: The positioning server sends an "OTDOA information request (NRPPa OTDOA INFORMATION REQUEST)" message to the BS, which requests the BS to provide downlink positioning assistance data, such as RS configuration data.

[0013] Step 106: The BS sends an "OTDOA Information Response (NRPPa OTDOA INFORMATION RESPONSE)" message to the positioning server, providing the positioning server with the requested downlink positioning assistance data, including RS configuration data.

[0014] Step 107: The positioning server provides the positioning assistance data requested by the UE in a "provide positioning assistance data" message, which carries RS configuration data.

[0015] Step 108: The positioning server sends a "request for positioning information" message to the UE. The message requests the UE to measure the downlink RS of the BS and reply with the measured positioning measurement value.

[0016] Step 109: The UE uses the positioning assistance data (eg, RS configuration data) to measure the downlink signal to obtain a positioning measurement value (eg, RSTD).

[0017] Step 110: The UE sends a "provide positioning information" message to the positioning server, which includes a positioning measurement value (eg, RSTD) obtained by measuring a downlink RS.

[0018] Step 111: The positioning server calculates the position of the UE using the positioning measurement value obtained by the UE.

[0019] In terms of time, step 105 and step 106 have no sequence relationship with step 101 to step 104. That is, step 105 and step 106 may occur before, after, or simultaneously with step 101 to step 104.

[0020] The “LMF triggered positioning information transmission process” includes all 11 steps; the “UE triggered positioning information transmission process” includes 10 steps except step 108.

[0021] Currently, the LTE protocol only includes the positioning measurement value quality indication, but not the positioning measurement value quality indication judgment result. Since LTE only supports OTDOA and E-CID positioning technologies, but not Multi-RTT positioning technology, LTE does not have the positioning measurement value quality indication information and positioning measurement value quality indication judgment result based on Multi-RTT.

[0022] In summary, the positioning measurement value based on downlink RS reported by UE to the network in the current 5G NR system does not contain the quality indication information of the measurement value. Therefore, the network cannot adaptively adjust the UE-specific downlink RS resources based on the positioning measurement value based on downlink RS reported by UE alone. Two problems may occur: first, when the measurement accuracy of UE based on cell-specific downlink RS is good, the network configures UE-specific RS resources with higher measurement accuracy, resulting in a waste of RS resources; second, when the measurement accuracy of UE based on cell-specific downlink RS is poor, the network configures UE-specific downlink RS resources with lower measurement accuracy, resulting in the UE-specific RS resources being unable to meet the measurement accuracy. Summary of the invention

[0023] Embodiments of the present application provide a signal transmission method and apparatus for implementing reference signal transmission of adaptive UE-specific RS resource configuration based on positioning measurement value quality indication.

[0024] On the terminal side, an embodiment of the present application provides a signal transmission method, including:

[0025] Receiving a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication determined by the terminal;

[0026] Based on measuring the UE-specific RS, positioning information is determined and reported.

[0027] Through this method, a UE-specific reference signal RS is received through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication determined by the terminal; based on measuring the UE-specific RS, positioning information is determined and reported, thereby realizing reference signal transmission of an adaptive UE-specific RS resource configuration based on the positioning measurement value quality indication.

[0028] Optionally, the positioning measurement quality indicator is determined by the following steps:

[0029] Obtain cell-specific reference signal resource configuration information at the cell level;

[0030] receiving a cell-specific RS according to the cell-specific reference signal resource configuration information;

[0031] By measuring the cell-specific RS, a first positioning measurement value is determined, and a first positioning measurement value quality indicator and / or a first positioning measurement value quality indicator decision result is determined.

[0032] Optionally, determining the first positioning measurement value quality indication judgment result specifically includes:

[0033] By comparing the first positioning measurement value quality indication with a preset threshold value, a decision result of whether the first positioning measurement value quality indication meets the performance indicator is determined.

[0034] Optionally, the UE-specific reference signal resource is specifically determined by the network side based on the first positioning measurement value and the first positioning measurement value quality indication reported by the terminal, or the judgment result of the first positioning measurement value and the first positioning measurement value quality indication.

[0035] Optionally, determining and reporting positioning information based on measuring the UE-specific RS specifically includes:

[0036] Determine a second positioning measurement value by measuring the UE-specific RS;

[0037] determining a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value;

[0038] Based on the first positioning measurement value and the second positioning measurement value obtained by measuring the cell-specific RS at the cell level, a third positioning measurement value is determined and reported.

[0039] Optionally, the method further comprises: determining a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value;

[0040] Determining a third positioning measurement value based on the first positioning measurement value and the second positioning measurement value specifically includes:

[0041] According to the first positioning measurement value quality indication and / or the first positioning measurement value quality indication judgment result, and the second positioning measurement value quality indication and / or the second positioning measurement value quality indication judgment result, the first positioning measurement value and the second positioning measurement value are processed to determine a third positioning measurement value.

[0042] Optionally, any of the RSs includes one or a combination of the following RSs: a new radio positioning reference signal NR PRS, a channel state information reference signal (Channel State Information-Reference Signal, CSI-RS), and a synchronization block (Synchronization Signal / PBCH Block, SSB).

[0043] Optionally, the configuration information of any of the reference signal resources is obtained through one or a combination of the following signaling:

[0044] Broadcast signaling;

[0045] Radio Resource Control RRC signaling;

[0046] Downlink control information DCI signaling;

[0047] New Radio Location Protocol NRPP signaling.

[0048] Optionally, any of the positioning measurement values ​​includes at least one or a combination of the following contents: a reference signal time difference RSTD, and a terminal sending and receiving time difference.

[0049] Optionally, any of the positioning measurement value quality indications includes at least one or a combination of the following contents: reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, measurement value error, and positioning measurement value quality indication judgment result.

[0050] On the base station side, a signal transmission method provided in an embodiment of the present application includes:

[0051] Determine a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication reported by the terminal;

[0052] A UE-specific reference signal RS is sent to the terminal through the UE-specific reference signal resource.

[0053] Optionally, the method further comprises:

[0054] Determine cell-specific reference signal resources at the cell level;

[0055] A cell-specific reference signal RS is sent to the terminal through the cell-specific reference signal resource.

[0056] Optionally, the UE-specific reference signal resources and / or the cell-specific reference signal resources are determined by receiving configuration information sent by LMF.

[0057] Optionally, the method further comprises:

[0058] The configuration information of the UE-specific reference signal resource and / or the cell-specific reference signal resource is notified to the terminal through broadcast signaling, radio resource control RRC signaling or downlink control information DCI signaling.

[0059] Accordingly, on the LMF side, an embodiment of the present application provides a signal transmission method, including:

[0060] Determine terminal-level UE-specific reference signal resources based on the positioning measurement value quality indication reported by the terminal;

[0061] Send configuration information of the UE-specific reference signal resource.

[0062] Optionally, determining a terminal-level UE-specific reference signal resource based on a positioning measurement value quality indication reported by the terminal specifically includes:

[0063] If the received value is a first positioning measurement value quality indication reported by the terminal, determining a judgment result of whether the first positioning measurement value quality indication meets the performance indicator by comparing the first positioning measurement value quality indication with a preset threshold value, and determining the UE-specific reference signal resource according to the judgment result;

[0064] If what is received is a first positioning measurement value quality indication judgment result reported by the terminal, and the judgment result indicates whether the first positioning measurement value quality indication meets the performance indicator, the UE-specific reference signal resource is directly determined according to the judgment result.

[0065] Optionally, the UE-specific reference signal resources determined for the terminal when the judgment result indicates that the first positioning measurement value quality indication does not meet the performance indicator are better than the UE-specific reference signal resources determined for the terminal when the judgment result indicates that the first positioning measurement value quality indication meets the performance indicator.

[0066] Optionally, the method further includes: receiving a third positioning measurement value reported by the terminal, and determining the position of the terminal.

[0067] On the terminal side, an embodiment of the present application provides a signal transmission device, including:

[0068] A memory for storing program instructions;

[0069] The processor is used to call the program instructions stored in the memory and execute according to the obtained program:

[0070] Receiving a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication determined by the terminal;

[0071] Based on measuring the UE-specific RS, positioning information is determined and reported.

[0072] Optionally, the positioning measurement quality indicator is determined by the following steps:

[0073] Obtain cell-specific reference signal resource configuration information at the cell level;

[0074] receiving a cell-specific RS according to the cell-specific reference signal resource configuration information;

[0075] By measuring the cell-specific RS, a first positioning measurement value is determined, and a first positioning measurement value quality indicator and / or a first positioning measurement value quality indicator decision result is determined.

[0076] Optionally, determining the first positioning measurement value quality indication judgment result specifically includes:

[0077] By comparing the first positioning measurement value quality indication with a preset threshold value, a decision result of whether the first positioning measurement value quality indication meets the performance indicator is determined.

[0078] Optionally, the UE-specific reference signal resource is specifically determined by the network side based on the first positioning measurement value and the first positioning measurement value quality indication reported by the terminal, or the judgment result of the first positioning measurement value and the first positioning measurement value quality indication.

[0079] Optionally, determining and reporting positioning information based on measuring the UE-specific RS specifically includes:

[0080] Determine a second positioning measurement value by measuring the UE-specific RS;

[0081] determining a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value;

[0082] Based on the first positioning measurement value and the second positioning measurement value obtained by measuring the cell-specific RS at the cell level, a third positioning measurement value is determined and reported.

[0083] Optionally, the processor is further configured to: determine a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value;

[0084] Determining a third positioning measurement value based on the first positioning measurement value and the second positioning measurement value specifically includes:

[0085] According to the first positioning measurement value quality indication and / or the first positioning measurement value quality indication judgment result, and the second positioning measurement value quality indication and / or the second positioning measurement value quality indication judgment result, the first positioning measurement value and the second positioning measurement value are processed to determine a third positioning measurement value.

[0086] Optionally, any of the RSs includes one or a combination of the following RSs: a new radio positioning reference signal NR PRS, a channel state information reference signal CSI-RS, and a synchronization block SSB.

[0087] Optionally, the processor acquires configuration information of any reference signal resource through one or a combination of the following signaling:

[0088] Broadcast signaling;

[0089] Radio Resource Control RRC signaling;

[0090] Downlink control information DCI signaling;

[0091] New Radio Location Protocol NRPP signaling.

[0092] Optionally, any of the positioning measurement values ​​includes at least one or a combination of the following contents: a reference signal time difference RSTD, and a terminal sending and receiving time difference.

[0093] Optionally, any of the positioning measurement value quality indications includes at least one or a combination of the following contents: reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, measurement value error, and positioning measurement value quality indication judgment result.

[0094] On the base station side, an embodiment of the present application provides a signal transmission device, including:

[0095] A memory for storing program instructions;

[0096] The processor is used to call the program instructions stored in the memory and execute according to the obtained program:

[0097] Determine a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication reported by the terminal;

[0098] A UE-specific reference signal RS is sent to the terminal through the UE-specific reference signal resource.

[0099] Optionally, the processor is further configured to:

[0100] Determine cell-specific reference signal resources at the cell level;

[0101] A cell-specific reference signal RS is sent to the terminal through the cell-specific reference signal resource.

[0102] Optionally, the UE-specific reference signal resources and / or the cell-specific reference signal resources are determined by receiving configuration information sent by LMF.

[0103] Optionally, the processor is further configured to:

[0104] The configuration information of the UE-specific reference signal resource and / or the cell-specific reference signal resource is notified to the terminal through broadcast signaling, radio resource control RRC signaling or downlink control information DCI signaling.

[0105] On the LMF side, an embodiment of the present application provides a signal transmission device, including:

[0106] A memory for storing program instructions;

[0107] The processor is used to call the program instructions stored in the memory and execute according to the obtained program:

[0108] Determine terminal-level UE-specific reference signal resources based on the positioning measurement value quality indication reported by the terminal;

[0109] Send configuration information of the UE-specific reference signal resource.

[0110] Optionally, determining a terminal-level UE-specific reference signal resource based on a positioning measurement value quality indication reported by the terminal specifically includes:

[0111] If the received value is a first positioning measurement value quality indication reported by the terminal, determining a judgment result of whether the first positioning measurement value quality indication meets the performance indicator by comparing the first positioning measurement value quality indication with a preset threshold value, and determining the UE-specific reference signal resource according to the judgment result;

[0112] If what is received is a first positioning measurement value quality indication judgment result reported by the terminal, and the judgment result indicates whether the first positioning measurement value quality indication meets the performance indicator, the UE-specific reference signal resource is directly determined according to the judgment result.

[0113] Optionally, the UE-specific reference signal resources determined for the terminal when the judgment result indicates that the first positioning measurement value quality indication does not meet the performance indicator are better than the UE-specific reference signal resources determined for the terminal when the judgment result indicates that the first positioning measurement value quality indication meets the performance indicator.

[0114] Optionally, the processor is further used to: receive a third positioning measurement value reported by the terminal, and determine the position of the terminal.

[0115] On the terminal side, another signal transmission device provided in an embodiment of the present application includes:

[0116] A receiving unit, configured to receive a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication determined by the terminal;

[0117] A determination unit is used to determine and report positioning information based on measuring the UE-specific RS.

[0118] On the base station side, another signal transmission device provided in an embodiment of the present application includes:

[0119] A first determining unit, configured to determine a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication reported by the terminal;

[0120] The first sending unit is used to send a UE-specific reference signal RS to the terminal through the UE-specific reference signal resource.

[0121] On the LMF side, another signal transmission device provided in an embodiment of the present application includes:

[0122] A second determining unit, configured to determine a terminal-level UE-specific reference signal resource based on a positioning measurement value quality indication reported by the terminal;

[0123] The second sending unit is used to send the configuration information of the UE-specific reference signal resource.

[0124] Another embodiment of the present application provides a computing device, which includes a memory and a processor, wherein the memory is used to store program instructions, and the processor is used to call the program instructions stored in the memory, and execute any of the above methods according to the obtained program.

[0125] Another embodiment of the present application provides a computer storage medium, wherein the computer storage medium stores computer executable instructions, and the computer executable instructions are used to enable the computer to execute any of the above methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0126] 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 only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0127] Figure 1 It is a schematic diagram of the basic OTDOA positioning process in the prior art;

[0128] Figure 2 A schematic diagram of a positioning process provided in an embodiment of the present application;

[0129] Figure 3 Another schematic diagram of a positioning process provided in an embodiment of the present application;

[0130] Figure 4 A schematic diagram of a third positioning process provided in an embodiment of the present application;

[0131] Figure 5 A schematic diagram of a flow chart of a signal transmission method on a terminal side provided in an embodiment of the present application;

[0132] Figure 6 A schematic diagram of a flow chart of a signal transmission method at a base station side provided in an embodiment of the present application;

[0133] Figure 7 A schematic flow chart of a signal transmission method on the LMF entity side provided in an embodiment of the present application;

[0134] Figure 8 A schematic diagram of the structure of a signal transmission device on the terminal side provided in an embodiment of the present application;

[0135] Fig. 9 A schematic diagram of the structure of a signal transmission device at a base station side provided in an embodiment of the present application;

[0136] Fig.10 A schematic diagram of the structure of a signal transmission device on the LMF entity side provided in an embodiment of the present application;

[0137] Fig.11 A schematic diagram of the structure of another signal transmission device on the terminal side provided in an embodiment of the present application;

[0138] Fig.12 A schematic diagram of the structure of another signal transmission device on the base station side provided in an embodiment of the present application;

[0139] Fig.13 A schematic diagram of the structure of another signal transmission device on the LMF entity side provided in an embodiment of the present application. DETAILED DESCRIPTION

[0140] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0141] The downlink RS positioning measurement value reporting defined by the current 5G NR does not include quality indication information of the measurement value. Therefore, it is difficult for the network to determine the UE-specific RS resources suitable for the UE based on the RS positioning measurement value reported by the UE.

[0142] The embodiments of the present application provide a signal transmission method and device on the terminal side and the network side, so as to realize adaptive UE-specific RS resource configuration based on the positioning measurement value quality indication, and transmit and locate the reference signal based on the resource configuration, so as to improve the performance of the whole system.

[0143] Among them, the method and the device are based on the same application concept. Since the method and the device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0144] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, applicable systems may be global system of mobile communication (GSM) system, code division multiple access (CDMA) system, wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, long term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) system, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) system, 5G system and 5G NR system, etc. These various systems include terminal equipment and network equipment.

[0145] The terminal device involved in the embodiment of the present application may be a device that provides voice and / or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be called a user equipment (UE). The wireless terminal device can communicate with one or more core networks via the RAN. The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiated protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0146] The network device involved in the embodiment of the present application includes a base station and an LMP entity, wherein the base station may include multiple cells. Depending on the specific application scenario, the base station may also be called an access point, or may refer to a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or other names. The network device may be used to convert received air frames to and from Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application can be a network device (base transceiver station, BTS) in the global system for mobile communications (global system for mobile communications, GSM) or code division multiple access (code division multiple access, CDMA), or a network device (NodeB) in wide-band code division multiple access (WCDMA), or an evolved network device (evolutional node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station in the 5G network architecture (next generation system), or a home evolved node B (home evolved node B, HeNB), a relay node, a home base station (femto), a pico base station (pico), etc., but is not limited in the embodiments of the present application.

[0147] The following is a detailed description of each embodiment of the present application in conjunction with the accompanying drawings. It should be noted that the display order of the embodiments of the present application only represents the order of the embodiments, and does not represent the advantages and disadvantages of the technical solutions provided by the embodiments.

[0148] The embodiments of the present application propose an adaptive terminal-level (UE-specific) downlink RS transmission method and device based on the UE's positioning performance accuracy requirements, positioning measurement value quality indications and / or positioning measurement value quality indication judgment results.

[0149] The technical solution provided by the embodiment of the present application includes: the UE receives and measures the cell-level (cell-specific) downlink RS, obtains a first positioning measurement value, a first positioning measurement value quality indication and / or a first positioning measurement value quality indication judgment result. The UE reports one or a combination of the following information to the network: the first positioning measurement value of the cell-specific downlink RS, the first positioning measurement value quality indication, the first positioning measurement value quality indication judgment result or the actual positioning performance requirement of the UE, and applies to the network for UE-specific RS resources that meet the actual positioning performance requirement of the UE. The UE receives and measures the UE-specific downlink RS configured by the network, obtains a second positioning measurement value, a second measurement value quality indication and / or a second positioning measurement value quality indication judgment result, performs algorithm processing based on the first positioning measurement value and the second positioning measurement value to obtain a third positioning measurement value, and reports it to the network for the network to locate the terminal.

[0150] in,

[0151] The cell-specific first downlink RS resource is determined by the network based on the lowest or medium positioning performance requirements of all UEs in the cell, and is generally sent periodically. The UE-specific second downlink RS is determined by the network based on the actual positioning performance requirements of the target UE, and is generally sent aperiodically.

[0152] The positioning measurement value includes one or a combination of the following: RSTD, UE Rx-Tx time difference, etc.

[0153] The positioning measurement value quality indication includes one or a combination of the following contents: reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), signal to interference plus noise ratio (SINR), measurement value error (for example, resolution of a single measurement sample point, standard deviation or variance of multiple measurement values) and positioning measurement value quality indication decision result.

[0154] The downlink RS used for the above measurement includes one or more of the following signals: NR PRS, channel state information reference signal (CSI-RS), and synchronization block (SSB).

[0155] The first positioning measurement value quality indication judgment result can be calculated by the UE itself or by the network side. If calculated by the UE itself, the UE compares the first positioning measurement value quality indication with the threshold value calculated or preconfigured according to the final positioning performance requirement of the UE, thereby obtaining a first positioning measurement value quality indication judgment result including two states (i.e., judgment results), wherein the "positive" state means that the first positioning measurement value quality indication meets the performance index; the "negative" state means that the first positioning measurement value quality indication does not meet the performance index. Among them, the first positioning measurement value quality indication judgment result and the second positioning measurement value quality indication judgment result are both related to the final positioning performance requirement of this UE, and the performance index of the measurement value is higher than the final positioning performance index of the UE, for example: the measurement value error is less than 1 / N of the final positioning error, where N is an integer greater than 1. If calculated on the network side, the UE needs to report the actual positioning performance requirement to the network side, and the network side uses the same criteria for calculation.

[0156] "A third positioning measurement value is obtained after algorithmic processing based on the first positioning measurement value and the second positioning measurement value". For example, the UE uses one of the following methods, such as linear weighted merging and selective merging (for example, merging is performed only when the first positioning measurement value quality indication judgment result and the second positioning measurement value quality indication judgment result are both in a "positive" state), for the first positioning measurement value and the second positioning measurement value to obtain the merged third positioning measurement value.

[0157] In the embodiment of the present application, the cell-level reference signal cell-specific RS specifically refers to a reference signal that can be obtained and measured by all terminals in the cell; the terminal-level reference signal UE-specific RS specifically refers to a reference signal sent to a specific terminal, which can only be obtained and measured by the specific terminal.

[0158] Implementation plan:

[0159] The specific solutions provided in the embodiments of this application are as follows:

[0160] Terminal side:

[0161] 1. The UE receives the cell-specific RS resource configuration information notified by the network side base station through broadcast signaling, or the UE receives the cell-specific RS resource configuration information notified by the network side LMF entity through positioning NRPP signaling.

[0162] 2. The UE calculates a first positioning measurement value and a first positioning measurement value quality indication corresponding to the first positioning measurement value and / or a first positioning measurement value quality indication judgment result according to the cell-specific RS resource configuration information configured by the network-side LMF or the network-side base station and the cell-specific RS sent by the network-side base station, wherein the first positioning measurement value includes but is not limited to: RSTD, UE Rx-Tx time difference, etc.; the first positioning measurement value quality indication includes but is not limited to RSRP, RSRQ, SINR, and the error of the measurement value (for example: the resolution of a single measurement sample point, the standard deviation or variance of multiple measurement values). The reference signals used for the above measurement include: NR PRS and / or CSI-RS and / or SSB. The UE compares the first positioning measurement value quality indication with the preconfigured threshold value, thereby obtaining a first positioning measurement value quality indication judgment result in one of the two states of "positive" and "negative", wherein the "positive" state is that the first positioning measurement value quality indication meets the performance indicator; the "negative" state is that the first positioning measurement value quality indication does not meet the performance indicator. For example, if the first positioning measurement value quality indication is greater than or equal to a preset threshold value, the first positioning measurement value quality indication judgment result is determined to be a "positive" state, otherwise, the first positioning measurement value quality indication judgment result is determined to be a "negative" state. The threshold value can be determined according to actual needs and is not limited in the embodiments of the present application.

[0163] 3. The UE reports the first positioning measurement value and the first positioning measurement value quality indication to the network-side LMF, or the UE reports the first positioning measurement value and the first positioning measurement value quality indication judgment result.

[0164] 4. The UE receives UE-specific RS resource configuration information notified by the network side base station through broadcast signaling, RRC signaling or DCI signaling, or the UE receives UE-specific RS resource configuration information notified by the network side LMF through positioning NRPP signaling.

[0165] 5. The UE calculates the second positioning measurement value, the positioning second measurement value quality indication and / or the second positioning measurement value quality indication judgment result according to the UE-specific RS resource configuration information configured by the network side LMF or the network side base station and the UE-specific RS sent by the network side base station, wherein the second positioning measurement value includes but is not limited to: RSTD, UERx-Tx time difference, etc.; the positioning second measurement value quality indication includes but is not limited to RSRP, RSRQ, SINR and measurement value error (for example: standard deviation or variance of multiple measurement values). The reference signals used for the above measurement include: NR PRS and / or CSI-RS and / or SSB.

[0166] 6. The UE uses a linear weighted merging method to obtain a final third positioning measurement value for the first positioning measurement value and the second positioning measurement value, or uses a selective merging method to obtain the final third positioning measurement value. For example, merging is performed only when the quality indication judgment result of the first positioning measurement value and the quality indication judgment result of the second positioning measurement value are both in a "positive" state.

[0167] 7. The UE reports the third positioning measurement value to the network-side LMF.

[0168] Network side - base station:

[0169] 1. The network-side base station receives the cell-specific RS resource configuration information of each cell sent by the LMF. If the network-side LMF does not directly notify the UE of the cell-specific RS resource configuration information, the network-side base station notifies the UE of the cell-specific RS resource configuration information through broadcast signaling.

[0170] Among them, there are two methods for how the base station determines whether the LMF has notified the UE of the cell-specific RS resource configuration information. Method 1: LMF notifies the base station whether it has notified the UE of the cell-specific RS resource configuration information; Method 2: The protocol predefines the LMF to directly notify the terminal of the cell-specific RS resource configuration information, or the protocol predefines the LMF to send the cell-specific RS resource configuration information to the base station.

[0171] 2. The network-side base station sends a cell-specific RS to all UEs in the cell.

[0172] 3. The network-side base station receives the UE-specific RS resource configuration information for the target UE from the network-side LMF. If the network-side LMF does not directly notify the terminal UE of the UE-specific RS resource configuration information, the network-side base station notifies the terminal UE of the above UE-specific RS resource configuration information through broadcast signaling, RRC signaling or DCI signaling.

[0173] Among them, there are two methods for how the base station determines whether the LMF has notified the UE of the UE-specific RS resource configuration information. Method 1: LMF notifies the base station whether it has notified the UE of the UE-specific RS resource configuration information; Method 2: The protocol predefines the LMF to directly notify the terminal of the UE-specific RS resource configuration information, or the protocol predefines the LMF to send the UE-specific RS resource configuration information to the base station.

[0174] 4. The network-side base station sends a UE-specific RS to the target UE.

[0175] Network side - LMF:

[0176] 1. The network-side LMF notifies each base station of the cell-specific RS resource configuration information of each cell, and the network-side LMF directly notifies the UE of the cell-specific RS resource configuration information through NRPP signaling.

[0177] 2. The network-side LMF performs preliminary UE position calculation based on the first positioning measurement value reported by the UE based on the cell-specific RS measurement, and the first positioning measurement value quality indication or the first positioning measurement value quality indication judgment result, and reconfigures the UE-specific RS resource information.

[0178] Specifically, if the UE reports the first positioning measurement value quality indication judgment result, the network-side LMF will directly perform UE-specific RS resource configuration based on the first positioning measurement value quality indication judgment result. If the UE reports the first positioning measurement value quality indication, the network-side LMF compares the first positioning measurement value quality indication of one or more cells reported by the UE with a predefined threshold value to obtain the first positioning measurement value quality indication judgment result: the "positive" state means that the first positioning measurement value quality indication meets the performance indicator; the "negative" state means that the first positioning measurement value quality indication does not meet the performance indicator.

[0179] If the judgment result of the first positioning measurement value quality indication is in a "negative" state, the network-side LMF applies for UE-specific RS resources with better measurement accuracy for this UE, for example: the RS resources occupy a larger bandwidth in the frequency domain, and / or occupy more OFDM symbols in the time domain; if the judgment result of the first positioning measurement value quality indication is in a "positive" state, the network-side LMF applies for UE-specific RS resources with suboptimal measurement accuracy for this UE, for example: the RS resources occupy a smaller bandwidth in the frequency domain, and / or occupy fewer OFDM symbols in the time domain.

[0180] 3. The network-side LMF notifies each base station of the above UE-specific RS resource configuration information through positioning NRPPa signaling, and can also directly notify the terminal UE through positioning NRPP signaling.

[0181] 4. The network-side LMF calculates the final position of the UE based on the third positioning measurement value reported by the terminal.

[0182] Several specific embodiments are described below.

[0183] Embodiment 1: OTDOA positioning solution—UE reports RSTD measurement value + measurement value quality indicator RSRP to LMF.

[0184] Embodiment 1 is a positioning solution based on OTDOA, wherein:

[0185] The UE reports the RSTD measurement value and the measurement value quality indicator RSRP to the LMF.

[0186] The UE receives the cell-specific and UE-specific RS resource configuration information notified by the network-side LMF through positioning NRPP signaling.

[0187] The RS reference signal used for the above measurements is the NR PRS.

[0188] Terminal side:

[0189] 1. The UE receives the cell-specific PRS resource configuration information notified by the network-side LMF through positioning NRPP signaling.

[0190] 2. The UE calculates the positioning measurement value RSTD 1 and the corresponding positioning measurement value quality indication RSRP 1 according to the cell-specific PRS resource configuration information configured by the network-side LMF or the network-side base station and the cell-specific PRS sent by the network-side base station.

[0191] 3. The UE reports the positioning measurement value RSTD 1 and the positioning measurement value quality indication RSRP 1 to the network-side LMF.

[0192] 4. The UE receives UE-specific PRS resource configuration information notified by the network-side LMF through positioning NRPP signaling.

[0193] 5. The UE calculates the positioning measurement value RSTD 2 and the positioning measurement value quality indication RSRP 2 according to the UE-specific PRS resource configuration information notified by the network side LMF and the UE-specific PRS sent by the network side base station.

[0194] 6. The UE uses a selective merging method to obtain the final positioning measurement value RSTD 3 for the positioning measurement value RSTD 1 and the positioning measurement value RSTD 2. Specifically, the positioning measurement value quality indication RSRP1 and the positioning measurement value quality indication RSRP2 are compared, and the positioning measurement value corresponding to the larger value is selected. For example: RSRP 2>RSRP 1, RSTD3=RSTD2 is selected.

[0195] 7. The UE reports the positioning measurement value RSTD3 to the network-side LMF.

[0196] Network side - base station:

[0197] 1. The network-side base station receives the cell-specific PRS resource configuration information of each cell from the LMF. If the network-side LMF does not directly notify the UE of the cell-specific PRS resource configuration information, the network-side base station notifies the UE of the cell-specific PRS resource configuration information through broadcast signaling.

[0198] 2. The network-side base station sends a cell-specific PRS to all UEs in the cell.

[0199] 3. The network receives the UE-specific PRS resource configuration information for each cell of the target UE from the LMF. If the network-side LMF does not directly notify the terminal UE of the UE-specific PRS resource configuration information, the network-side base station notifies the terminal UE of the above UE-specific PRS resource configuration information through broadcast signaling, RRC signaling or DCI signaling.

[0200] 4. The network-side base station sends a UE-specific PRS to the target UE.

[0201] Network side - LMF:

[0202] 1. The network-side LMF notifies each base station of the cell-specific PRS resource configuration information of each cell, and the network-side LMF can also directly notify the UE of the cell-specific PRS resource configuration information through positioning NRPP signaling.

[0203] 2. The network-side LMF performs preliminary UE position calculation based on the cell-specific PRS-based positioning measurement value RSTD1 and positioning measurement value quality indication RSRP 1 reported by the UE, and reconfigures the UE-specific PRS resource information.

[0204] Specifically, since the UE reports the positioning measurement value quality indication RSRP 1, the network-side LMF compares the positioning measurement value quality indication RSRP 1 of multiple cells reported by the UE with a predefined RSRP threshold value, so as to obtain a first positioning measurement value quality indication decision result in one of two states. Among them, the "positive" state means that the first positioning measurement value quality indication meets the performance index; the "negative" state means that the first positioning measurement value quality indication does not meet the performance index. Assume that RSRP1 < RSPR threshold value, then the first positioning measurement value quality indication decision result corresponds to the "negative" state. The network-side LMF applies for UE-specific RS resources with better measurement accuracy for this UE. For example, the RS resources occupy a larger bandwidth in the frequency domain and / or more OFDM symbols in the time domain.

[0205] 3. The network-side LMF notifies each base station of the above UE-specific RS resource configuration information through the positioning NRPPa signaling, and directly notifies the terminal UE through the positioning NRPP signaling.

[0206] 4. The network-side LMF calculates the UE position according to the third positioning measurement value reported by the terminal.

[0207] As Figure 2 shown, the following gives a detailed introduction to the specific steps of Embodiment 1.

[0208] Steps 201 to 204 are the same as Figure 1 the steps 101 to 104 in the process shown.

[0209] Step 205: The positioning server sends an "OTDOA Information Request (NRPPa OTDOAINFORMATION REQUEST)" message to the base station (BS). This message requests the BS to provide downlink positioning assistance data, including cell-specific PRS configuration information. Among them, the PRS signal configuration information includes PRS time-frequency resources, PRS pattern (pattern), and PRS sequence and other information.

[0210] The base stations include Base Station 1, Base Station 2... Base Station N.

[0211] Step 206: The base station returns an OTDOA information response to the positioning server.

[0212] Step 207: The positioning server provides the positioning assistance data requested by the UE in the "Provide Positioning Assistance Data" message, which carries cell-specific PRS configuration.

[0213] Step 207a: All BSs send cell-specific PRS signals to the UE.

[0214] Step 208 to step 209, same Figure 1 Steps 108 to 109 of the process shown.

[0215] Step 210: The UE provides positioning information to the LMF, including a first positioning measurement value RSTD1 and a first positioning measurement value quality indication RSRP1.

[0216] Step 211, LMF calculates the position of the terminal using the obtained positioning measurement value and information such as the base station antenna position, and LMF determines UE-specific PRS resource configuration information based on the first positioning measurement value RSTD 1 based on the cell-specific PRS and the first positioning measurement value quality indication RSRP1 reported by the UE.

[0217] Step 212: The positioning server (ie, the LMF entity) sends an "OTDOA information request (requesting UE-specific PRS resource configuration information)" message to the BS.

[0218] Step 213: The BS sends an "OTDOA information response (carrying UE-specific PRS resource configuration information)" message to the positioning server.

[0219] Step 214: The positioning server provides positioning assistance data (including UE-specific PRS resource configuration information) to the UE.

[0220] Step 214a: All BSs send UE-specific PRS signals to the UE.

[0221] Step 215: The positioning server sends a "request positioning information" message to the UE.

[0222] Step 216, the UE uses the positioning assistance data (UE-specific PRS resource configuration information) to measure the downlink signal to obtain a second positioning measurement value RSTD2 and a second positioning measurement value quality indicator RSRP2, and obtains a combined third positioning measurement value RSTD3 based on a comparison of RSRP1 and RSRP2. Specifically, the positioning measurement value quality indicator RSRP1 and the positioning measurement value quality indicator RSRP2 are compared, and the positioning measurement value corresponding to the larger value is selected, for example: RSRP 2>RSRP1, RSTD3=RSTD2 is selected.

[0223] Step 217: The UE provides positioning information (including positioning measurement value RSTD3) to the LMF.

[0224] Step 218: LMF calculates the location of the terminal using the obtained positioning measurement value RSTD3 and information such as the base station antenna position.

[0225] Embodiment 2: E-CID positioning solution - the UE reports the UE receiving and sending time difference measurement value + measurement value quality indication SINR of the target base station to the LMF.

[0226] Embodiment 2 is a positioning solution based on E-CID, and the main difference from Embodiment 1 is:

[0227] The UE reports the UE receiving and sending time difference measurement value and the measurement value quality indication SINR to the LMF.

[0228] The UE receives the cell-specific resource configuration information notified by the network-side LMF through positioning NRPP signaling.

[0229] The UE receives UE-specific PRS resource configuration information notified by the network side base station through broadcast signaling, Radio Resource Control (RRC) signaling or Downlink Control Information (DCI) signaling.

[0230] The cell-specific RS used for the above measurement includes NR SSB, and the UE-specific RS includes NR PRS.

[0231] Terminal side:

[0232] 1. The UE receives the cell-specific SSB resource configuration information notified by the network side LMF through positioning NRPP signaling.

[0233] 2. The UE calculates the positioning measurement value UE receiving and sending time difference 1 and the quality indication SINR 1 corresponding to the positioning measurement value according to the cell-specific SSB resource configuration information configured by the network side LMF or the network side base station and the cell-specific SSB sent by the network side base station.

[0234] 3. The UE reports the positioning measurement value UE receiving and sending time difference 1 and the positioning measurement value quality indication SINR 1 to the network side LMF.

[0235] 4. The UE receives UE-specific PRS resource configuration information notified by the network side base station through broadcast signaling, RRC signaling or DCI signaling.

[0236] 5. The UE calculates the positioning measurement value UE receiving and sending time difference 2 and the positioning measurement value quality indication SINR 2 according to the UE-specific PRS resource configuration information notified by the network side base station and the UE-specific PRS sent by the network side base station.

[0237] 6. The UE uses one of the selective merging methods to obtain the final positioning measurement value UE reception and transmission time difference 3 for the positioning measurement value UE reception and transmission time difference 1 and the positioning measurement value UE reception and transmission time difference 2. Specifically, the positioning measurement value quality indication SINR 1 and the positioning measurement value quality indication SINR 2 are compared, and the positioning measurement value corresponding to the larger value is selected. For example, SINR 2>SINR 1, and the UE reception and transmission time difference 3=UE reception and transmission time difference 2 is selected.

[0238] 7. The UE reports the combined positioning measurement value UE receiving and sending time difference 3 to the network side LMF.

[0239] Network side - base station:

[0240] 1. The network-side base station receives the cell-specific SSB resource configuration information of each cell sent by LMF.

[0241] 2. The network-side base station sends a cell-specific SSB to all UEs in the cell.

[0242] 3. The network-side base station receives the UE-specific PRS resource configuration information for the target UE from the network-side LMF. Since the network-side LMF does not directly notify the terminal UE of the UE-specific PRS resource configuration information, the network-side base station notifies the terminal UE of the above UE-specific PRS resource configuration information through broadcast signaling, RRC signaling or DCI signaling.

[0243] 4. The network-side base station sends a UE-specific PRS to the target UE.

[0244] Network side - LMF:

[0245] 1. The network-side LMF notifies each base station of the cell-specific SSB resource configuration of each cell, and the network-side LMF directly notifies the UE of the cell-specific SSB resource configuration information through positioning NRPP signaling.

[0246] 2. The network-side LMF performs UE-specific PRS resource configuration based on the positioning measurement value UE receiving and sending time difference 1 and the positioning measurement value quality indication SINR 1 reported by the UE based on the cell-specific SSB.

[0247] Specifically, since the UE reports the positioning measurement value quality indication SINR1, the network-side LMF compares the positioning measurement value quality indications SINR1 of multiple cells reported by the UE with a predefined SINR threshold value to obtain a first positioning measurement value quality indication judgment result. Among them, the "positive" state means that the positioning measurement value quality indication SINR1 meets the performance index; the "negative" state means that the positioning measurement value quality indication SINR1 does not meet the performance index. Assume that SINR1 < SINR threshold value, then the first positioning measurement value quality indication judgment result corresponds to the "negative" state. The network-side LMF applies for UE-specific RS resources with better measurement accuracy for this UE. For example, the RS resources occupy a larger bandwidth in the frequency domain and / or more OFDM symbols in the time domain.

[0248] 3. The network-side LMF notifies each base station of the above UE-specific PRS resource configuration information through the positioning NRPPa signaling, and directly notifies the terminal UE through the positioning NRPP signaling.

[0249] 4. The network-side LMF calculates the UE position based on the UE transceiver time difference 3 reported by the terminal.

[0250] As Figure 3 shown, the following gives a detailed introduction to the specific steps of Embodiment 2.

[0251] Steps 301 to 304 are the same as Figure 1 the steps 101 to 104 in the process shown.

[0252] Step 305: The positioning server sends an "E-CID Information Request (NRPPa E-CID INFORMATION REQUEST)" message to the BS. This message requests the BS to provide downlink positioning assistance data, including cell-specific SSB resource configuration information. The cell-specific SSB resource configuration information includes information such as SSB time-frequency resources, SSB pattern, and SSB sequence.

[0253] Step 306: Each base station replies with an E-CID information response to the positioning server.

[0254] Step 307: The positioning server provides the positioning assistance data requested by the UE in the "Provide Positioning Assistance Data" message, which carries cell-specific SSB resource configuration information.

[0255] Step 307a: All BSs send cell-specific SSB signals to the UE.

[0256] Steps 308 to 309 are the same as Figure 1 Step 108 to step 109.

[0257] Step 310: The UE provides positioning information to the LMF, including the positioning measurement value UE receiving and sending time difference 1 and the positioning measurement value quality indication SINR1.

[0258] Step 311, LMF uses the obtained positioning measurement value and base station antenna position and other information to calculate the position of the terminal. LMF determines the UE-specific PRS resource configuration information according to the positioning measurement value UE receiving and transmitting time difference 1 based on the cell-specific SSB reported by the UE and the positioning measurement value quality indication SINR1.

[0259] Step 312: The positioning server sends an "E-CID information request (requesting UE-specific PRS resource configuration information)" message to the BS.

[0260] Step 313: The BS sends an "E-CID information response (carrying UE-specific PRS resource configuration information)" message to the positioning server.

[0261] Step 314: The positioning server provides positioning assistance data (including UE-specific PRS resource configuration information) to the UE.

[0262] Step 314a: All BSs send a UE-specific second PRS signal to the UE.

[0263] Step 315: The positioning server sends a "request positioning information" message to the UE.

[0264] Step 316, the UE uses the positioning assistance data (UE-specific second PRS configuration information) to measure the downlink signal to obtain the positioning measurement value UE receiving and transmitting time difference 2 and the positioning measurement value quality indicator SINR2, and obtains the combined positioning measurement value UE receiving and transmitting time difference 3 based on the comparison of SINR1 and SINR2. Specifically, the positioning measurement value quality indicator SINR1 and the positioning measurement value quality indicator RSRP2 are compared, and the positioning measurement value corresponding to the larger value is selected, for example: SINR 2>SINR 1, and the UE receiving and transmitting time difference 3 is selected = UE receiving and transmitting time difference 2.

[0265] Step 317: UE provides positioning information (including the positioning measurement value UE receiving and sending time difference 3) to LMF.

[0266] Step 318: LMF calculates the location of the terminal using the obtained positioning measurement value and information such as the base station antenna position.

[0267] Embodiment 3: Multi-RTT positioning scheme - The UE reports the UE transceiver time difference measurement value of the candidate base stations, the measurement value quality indication RSRP, and the measurement value quality indication RSRP decision result to the LMF.

[0268] Embodiment 3 is a positioning scheme based on Multi-RTT. Among them,

[0269] The UE reports the UE transceiver time difference measurement values of all candidate base stations, the measurement value quality indication RSRP, and the measurement value quality indication RSRP decision result to the LMF.

[0270] The UE receives the cell-specific and UE-specific RS resource configuration information notified by the network-side LMF through the positioning NRPP signaling.

[0271] The RS used for the above measurement can be NR PRS.

[0272] Terminal side:

[0273] 1. The UE receives the cell-specific PRS resource configuration information notified by the network-side LMF through the positioning NRPP signaling.

[0274] 2. The UE calculates the positioning measurement value UE transceiver time difference 1, the positioning measurement value quality indication RSRP 1, and the positioning measurement value quality indication RSRP decision result 1 according to the cell-specific PRS resource configuration information configured by the network-side LMF or the network-side base station and the cell-specific PRS sent by the network-side base station.

[0275] Specifically, the UE compares the positioning measurement value quality indication RSRP 1 of multiple cells measured by the UE with a predefined RSRP threshold value to obtain the positioning measurement value quality indication RSRP decision result 1. Among them, the "positive" state means that the positioning measurement value quality indication RSRP 1 meets the performance index; the "negative" state means that the positioning measurement value quality indication RSRP 1 does not meet the performance index. Assume that for the RSRP1 of base station i < RSPR threshold value, then the positioning measurement value quality indication RSRP decision result 1 corresponds to the "negative" state.

[0276] 3. The UE reports the positioning measurement value UE transceiver time difference 1, the positioning measurement value quality indication RSRP 1, and the positioning measurement value quality indication RSRP decision result 1 to the network-side LMF.

[0277] 4. The UE receives the UE-specific PRS resource configuration information notified by the network-side LMF through the positioning NRPP signaling.

[0278] 5. The UE calculates the positioning measurement value UE receiving and sending time difference 2 and the positioning measurement value quality indication RSRP 2 according to the UE-specific RS resource configuration information notified by the network side LMF and the UE-specific PRS sent by the network side base station.

[0279] 6. The UE obtains the final positioning measurement value UE receiving and sending time difference 3 by selective merging for the positioning measurement value UE receiving and sending time difference 1 and the positioning measurement value UE receiving and sending time difference 2. Specifically, the positioning measurement value quality indication RSRP1 and the positioning measurement value quality indication RSRP2 are compared, and the positioning measurement value corresponding to the larger value is selected. For example, RSRP 2>RSRP1, and the UE receiving and sending time difference 3 is selected as UE receiving and sending time difference 2.

[0280] 7. The UE reports the combined positioning measurement value UE receiving and sending time difference 3 to the network side LMF.

[0281] Network side - base station:

[0282] 1. The network-side base station receives the cell-specific PRS resource configuration information of each cell from the LMF. If the network-side LMF does not directly notify the UE of the cell-specific PRS resource configuration information, the network-side base station notifies the UE of the cell-specific PRS resource configuration information through broadcast signaling.

[0283] 2. The network-side base station sends a cell-specific PRS to all UEs in the cell.

[0284] 3. The network receives the UE-specific PRS resource configuration information for each cell of the target UE from the LMF. If the network-side LMF does not directly notify the terminal UE of the UE-specific PRS resource configuration information, the network-side base station notifies the terminal UE of the above UE-specific PRS resource configuration information through broadcast signaling, RRC signaling or DCI signaling.

[0285] 4. The network-side base station sends a UE-specific PRS to the target UE.

[0286] Network side - LMF:

[0287] 1. The network-side LMF notifies each base station of the cell-specific PRS resource configuration information of each cell, and the network-side LMF directly notifies the UE of the cell-specific PRS resource configuration information through positioning NRPP signaling.

[0288] 2. The network-side LMF performs preliminary UE position calculation based on the positioning measurement value UE receiving and sending time difference 1, positioning measurement value quality indication RSRP 1 and positioning measurement value quality indication RSRP judgment result 1 reported by the UE based on the cell-specific PRS, and re-determines the UE-specific PRS resource configuration information.

[0289] 3. The network-side LMF notifies each base station of the above UE-specific PRS resource configuration information through positioning NRPPa signaling, and directly notifies the terminal UE through positioning NRPP signaling.

[0290] 4. The network-side LMF calculates the UE position based on the third positioning measurement value reported by the terminal.

[0291] like Figure 4 As shown, the specific steps of Example 3 are introduced below.

[0292] Step 401 to step 404, same Figure 1 Steps 101 to 104 of the present invention.

[0293] Step 405: The positioning server sends a "Multi-RTT Information Request (NRPPa Multi-RTTINFORMATION REQUEST)" message to the BS, which requests the BS to provide downlink positioning assistance data, including cell-specific PRS resource configuration information, wherein the PRS resource configuration information includes configuration information such as PRS time-frequency resources, PRS pattern and PRS sequence.

[0294] Step 406: Each base station feeds back a Multi-RTT information response to the positioning server.

[0295] Step 407: The positioning server provides the positioning assistance data requested by the UE in a "provide positioning assistance data" message, which carries cell-specific PRS resource configuration information.

[0296] Step 407a: All BSs send cell-specific PRS signals to the UE.

[0297] Step 408 to step 409, same Figure 1 Step 108 to step 109.

[0298] Step 410: The UE provides positioning information to the LMF, including the positioning measurement value UE receiving and sending time difference 1, the positioning measurement value quality indication RSRP1, and the positioning measurement value quality indication RSRP judgment result 1.

[0299] Step 411, LMF uses the obtained positioning measurement value and base station antenna position and other information to calculate the position of the terminal, and LMF determines the UE-specific RS resource configuration information according to the positioning measurement value UE receiving and sending time difference 1 based on the cell-specific RS reported by the UE, the positioning measurement value quality indication RSRP1 and the positioning measurement value quality indication RSRP judgment result 1.

[0300] Step 412: The positioning server sends a "Multi-RTT information request (requesting UE-specific PRS resource configuration information)" message to the BS.

[0301] Step 413: The BS sends a "Multi-RTT Information Response (carrying UE-specific PRS resource configuration information)" message to the positioning server.

[0302] Step 414: The positioning server provides positioning assistance data (including UE-specific PRS resource configuration information) to the UE.

[0303] Step 414a: All BSs send UE-specific PRS to the UE.

[0304] Step 415: The positioning server sends a "request positioning information" message to the UE.

[0305] Step 416: The UE uses the positioning assistance data (UE-specific PRS resource configuration information) to measure the downlink signal to obtain the positioning measurement value UE receiving and transmitting time difference 2 and the positioning measurement value quality indicator RSRP2, and obtains the positioning measurement value UE receiving and transmitting time difference 3 based on the comparison between RSRP1 and RSRP2. Specifically, the positioning measurement value quality indicator RSRP1 and the positioning measurement value quality indicator RSRP2 are compared, and the positioning measurement value corresponding to the larger value is selected, for example: RSRP 2>RSRP 1, and the UE receiving and transmitting time difference 3 is selected = UE receiving and transmitting time difference 2.

[0306] Step 417: UE provides positioning information (including the positioning measurement value UE receiving and sending time difference 3) to LMF.

[0307] Step 418: LMF calculates the location of the terminal using the obtained positioning measurement value and information such as the base station antenna position.

[0308] In summary, see Figure 5 On the terminal side, a signal transmission method provided by an embodiment of the present application includes:

[0309] S101. Receive a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by a network side based on a positioning measurement value quality indication determined by a terminal;

[0310] S102: Determine and report positioning information based on measuring the UE-specific RS.

[0311] Through this method, a UE-specific reference signal RS is received through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication determined by the terminal; based on measuring the UE-specific RS, positioning information is determined and reported, thereby realizing reference signal transmission of an adaptive UE-specific RS resource configuration based on the positioning measurement value quality indication.

[0312] Optionally, the positioning measurement quality indicator is determined by the following steps:

[0313] Obtain cell-specific reference signal resource configuration information at the cell level;

[0314] receiving a cell-specific RS according to the cell-specific reference signal resource configuration information;

[0315] By measuring the cell-specific RS, a first positioning measurement value is determined, and a first positioning measurement value quality indicator and / or a first positioning measurement value quality indicator decision result is determined.

[0316] Optionally, determining the first positioning measurement value quality indication judgment result specifically includes:

[0317] By comparing the first positioning measurement value quality indication with a preset threshold value, a decision result of whether the first positioning measurement value quality indication meets the performance indicator is determined.

[0318] Optionally, the UE-specific reference signal resource is specifically determined by the network side based on the first positioning measurement value and the first positioning measurement value quality indication reported by the terminal, or the judgment result of the first positioning measurement value and the first positioning measurement value quality indication.

[0319] Optionally, determining and reporting positioning information based on measuring the UE-specific RS specifically includes:

[0320] Determine a second positioning measurement value by measuring the UE-specific RS;

[0321] determining a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value;

[0322] Based on the first positioning measurement value and the second positioning measurement value obtained by measuring the cell-specific RS at the cell level, a third positioning measurement value is determined and reported.

[0323] Optionally, the method further comprises: determining a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value;

[0324] Determining a third positioning measurement value based on the first positioning measurement value and the second positioning measurement value specifically includes:

[0325] According to the first positioning measurement value quality indication and / or the first positioning measurement value quality indication judgment result, and the second positioning measurement value quality indication and / or the second positioning measurement value quality indication judgment result, the first positioning measurement value and the second positioning measurement value are processed to determine a third positioning measurement value.

[0326] Optionally, any of the RSs includes one or a combination of the following RSs: a new radio positioning reference signal NR PRS, a channel state information reference signal CSI-RS, and a synchronization block SSB.

[0327] Optionally, the configuration information of any of the reference signal resources is obtained through one or a combination of the following signaling:

[0328] Broadcast signaling;

[0329] Radio Resource Control RRC signaling;

[0330] Downlink control information DCI signaling;

[0331] New Radio Location Protocol NRPP signaling.

[0332] Optionally, any of the positioning measurement values ​​includes at least one or a combination of the following contents: a reference signal time difference RSTD, and a terminal sending and receiving time difference.

[0333] Optionally, any of the positioning measurement value quality indications includes at least one or a combination of the following contents: reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, measurement value error, and positioning measurement value quality indication judgment result.

[0334] On the base station side, see Figure 6 , a signal transmission method provided in an embodiment of the present application includes:

[0335] S601. Determine a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication reported by the terminal;

[0336] For example, the UE-specific reference signal resources are determined through the UE-specific reference signal resource configuration information sent by the LMF entity.

[0337] S602: Send a UE-specific reference signal RS to the terminal through the UE-specific reference signal resource.

[0338] Optionally, the method further comprises:

[0339] Determine a cell-specific reference signal resource at a cell level; for example, determine the cell-specific reference signal resource through the cell-specific reference signal resource configuration information sent by the LMF entity;

[0340] A cell-specific reference signal RS is sent to the terminal through the cell-specific reference signal resource.

[0341] Optionally, the UE-specific reference signal resources and / or the cell-specific reference signal resources are determined by receiving configuration information sent by LMF.

[0342] Optionally, the method further comprises:

[0343] The configuration information of the UE-specific reference signal resource and / or the cell-specific reference signal resource is notified to the terminal through broadcast signaling, radio resource control RRC signaling or downlink control information DCI signaling.

[0344] Accordingly, see Figure 7 On the LMF side, a signal transmission method provided by an embodiment of the present application includes:

[0345] S701, determining a terminal-level UE-specific reference signal resource based on a positioning measurement value quality indication reported by a terminal;

[0346] S702: Send configuration information of the UE-specific reference signal resource.

[0347] Optionally, determining a terminal-level UE-specific reference signal resource based on a positioning measurement value quality indication reported by the terminal specifically includes:

[0348] If the received value is a first positioning measurement value quality indication reported by the terminal, determining a judgment result of whether the first positioning measurement value quality indication meets the performance indicator by comparing the first positioning measurement value quality indication with a preset threshold value, and determining the UE-specific reference signal resource according to the judgment result;

[0349] If what is received is a first positioning measurement value quality indication judgment result reported by the terminal, and the judgment result indicates whether the first positioning measurement value quality indication meets the performance indicator, the UE-specific reference signal resource is directly determined according to the judgment result.

[0350] Optionally, the UE-specific reference signal resources determined for the terminal when the judgment result indicates that the first positioning measurement value quality indication does not meet the performance indicator are better than the UE-specific reference signal resources determined for the terminal when the judgment result indicates that the first positioning measurement value quality indication meets the performance indicator.

[0351] Optionally, the method further includes: receiving a third positioning measurement value reported by the terminal, and determining the position of the terminal.

[0352] On the terminal side, see Figure 8 , a signal transmission device provided in an embodiment of the present application includes:

[0353] Memory 620, used to store program instructions;

[0354] The processor 600 is configured to call the program instructions stored in the memory and execute according to the obtained program:

[0355] Receiving a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication determined by the terminal;

[0356] Based on measuring the UE-specific RS, positioning information is determined and reported.

[0357] Optionally, the positioning measurement quality indicator is determined by the following steps:

[0358] Obtain cell-specific reference signal resource configuration information at the cell level;

[0359] receiving a cell-specific RS according to the cell-specific reference signal resource configuration information;

[0360] By measuring the cell-specific RS, a first positioning measurement value is determined, and a first positioning measurement value quality indicator and / or a first positioning measurement value quality indicator decision result is determined.

[0361] Optionally, determining the first positioning measurement value quality indication judgment result specifically includes:

[0362] By comparing the first positioning measurement value quality indication with a preset threshold value, a decision result of whether the first positioning measurement value quality indication meets the performance indicator is determined.

[0363] Optionally, the UE-specific reference signal resource is specifically determined by the network side based on the first positioning measurement value and the first positioning measurement value quality indication reported by the terminal, or the judgment result of the first positioning measurement value and the first positioning measurement value quality indication.

[0364] Optionally, determining and reporting positioning information based on measuring the UE-specific RS specifically includes:

[0365] Determine a second positioning measurement value by measuring the UE-specific RS;

[0366] determining a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value;

[0367] Based on the first positioning measurement value and the second positioning measurement value obtained by measuring the cell-specific RS at the cell level, a third positioning measurement value is determined and reported.

[0368] Optionally, the processor 600 is further configured to: determine a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value;

[0369] Determining a third positioning measurement value based on the first positioning measurement value and the second positioning measurement value specifically includes:

[0370] According to the first positioning measurement value quality indication and / or the first positioning measurement value quality indication judgment result, and the second positioning measurement value quality indication and / or the second positioning measurement value quality indication judgment result, the first positioning measurement value and the second positioning measurement value are processed to determine a third positioning measurement value.

[0371] Optionally, any of the RSs includes one or a combination of the following RSs: a new radio positioning reference signal NR PRS, a channel state information reference signal CSI-RS, and a synchronization block SSB.

[0372] Optionally, the processor 600 acquires configuration information of any reference signal resource through one or a combination of the following signaling:

[0373] Broadcast signaling;

[0374] Radio Resource Control (RRC) signaling;

[0375] Downlink control information DCI signaling;

[0376] New Radio Location Protocol NRPP signaling.

[0377] Optionally, any of the positioning measurement values ​​includes at least one or a combination of the following contents: a reference signal time difference RSTD, and a terminal sending and receiving time difference.

[0378] Optionally, any of the positioning measurement value quality indications includes at least one or a combination of the following contents: reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, measurement value error, and positioning measurement value quality indication judgment result.

[0379] The transceiver 610 is configured to receive and send data under the control of the processor 600 .

[0380] Among them, Figure 8 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 600 and various circuits of memory represented by memory 620 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 610 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface 630 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0381] The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 can store data used by the processor 600 when performing operations.

[0382] Optionally, the processor 600 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device).

[0383] On the base station side, see Fig. 9 , a signal transmission device provided in an embodiment of the present application includes:

[0384] Memory 520, used to store program instructions;

[0385] The processor 500 is configured to call the program instructions stored in the memory and execute according to the obtained program:

[0386] Determine a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication reported by the terminal;

[0387] A UE-specific reference signal RS is sent to the terminal through the UE-specific reference signal resource.

[0388] Optionally, the processor 500 is further configured to:

[0389] Determine cell-specific reference signal resources at the cell level;

[0390] A cell-specific reference signal RS is sent to the terminal through the cell-specific reference signal resource.

[0391] Optionally, the UE-specific reference signal resources and / or the cell-specific reference signal resources are determined by receiving configuration information sent by LMF.

[0392] Optionally, the processor 500 is further configured to:

[0393] The configuration information of the UE-specific reference signal resource and / or the cell-specific reference signal resource is notified to the terminal through broadcast signaling, radio resource control RRC signaling or downlink control information DCI signaling.

[0394] The transceiver 510 is configured to receive and send data under the control of the processor 500 .

[0395] Among them, Fig. 9 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 500 and memory represented by memory 520. The bus architecture may also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 510 may be a plurality of components, namely, a transmitter and a transceiver, providing a unit for communicating with various other devices on a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 when performing operations.

[0396] The processor 500 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD).

[0397] On the LMF side, see Fig.10 , a signal transmission device provided in an embodiment of the present application includes:

[0398] A memory 11, used for storing program instructions;

[0399] The processor 12 is used to call the program instructions stored in the memory and execute according to the obtained program:

[0400] Determine terminal-level UE-specific reference signal resources based on the positioning measurement value quality indication reported by the terminal;

[0401] Send configuration information of the UE-specific reference signal resource.

[0402] Optionally, determining a terminal-level UE-specific reference signal resource based on a positioning measurement value quality indication reported by the terminal specifically includes:

[0403] If the received value is a first positioning measurement value quality indication reported by the terminal, determining a judgment result of whether the first positioning measurement value quality indication meets the performance indicator by comparing the first positioning measurement value quality indication with a preset threshold value, and determining the UE-specific reference signal resource according to the judgment result;

[0404] If what is received is a first positioning measurement value quality indication judgment result reported by the terminal, and the judgment result indicates whether the first positioning measurement value quality indication meets the performance indicator, the UE-specific reference signal resource is directly determined according to the judgment result.

[0405] Optionally, the UE-specific reference signal resources determined for the terminal when the judgment result indicates that the first positioning measurement value quality indication does not meet the performance indicator are better than the UE-specific reference signal resources determined for the terminal when the judgment result indicates that the first positioning measurement value quality indication meets the performance indicator.

[0406] Optionally, the processor 12 is further used to: receive a third positioning measurement value reported by the terminal, and determine the position of the terminal.

[0407] The memory 11 may store data used by the processor 12 when performing operations.

[0408] The processor 12 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or a complex programmable logic device (CPLD).

[0409] On the terminal side, see Fig.11 Another signal transmission device provided in an embodiment of the present application includes:

[0410] The receiving unit 111 is configured to receive a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication determined by the terminal;

[0411] The determining unit 112 is used to determine and report positioning information based on measuring the UE-specific RS.

[0412] On the base station side, see Fig.12 Another signal transmission device provided in an embodiment of the present application includes:

[0413] The first determining unit 121 is configured to determine a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a positioning measurement value quality indication reported by the terminal;

[0414] The first sending unit 122 is configured to send a UE-specific reference signal RS to a terminal through the UE-specific reference signal resource.

[0415] On the LMF side, see Fig.13 Another signal transmission device provided in an embodiment of the present application includes:

[0416] A second determining unit 131 is configured to determine a terminal-level UE-specific reference signal resource based on a positioning measurement value quality indicator reported by the terminal;

[0417] The second sending unit 132 is configured to send the configuration information of the UE-specific reference signal resource.

[0418] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a 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.

[0419] 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.) or a processor (processor) 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 (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0420] The embodiment of the present application provides a computing device, which may be a desktop computer, a portable computer, a smart phone, a tablet computer, a personal digital assistant (PDA), etc. The computing device may include a central processing unit (CPU), a memory, an input / output device, etc. The input device may include a keyboard, a mouse, a touch screen, etc. The output device may include a display device, such as a liquid crystal display (LCD), a cathode ray tube (CRT), etc.

[0421] The memory may include a read-only memory (ROM) and a random access memory (RAM), and provides the processor with program instructions and data stored in the memory. In an embodiment of the present application, the memory may be used to store the program of any of the methods provided in the embodiments of the present application.

[0422] The processor calls the program instructions stored in the memory, and the processor is used to execute any of the methods provided in the embodiments of the present application according to the obtained program instructions.

[0423] An embodiment of the present application provides a computer storage medium for storing computer program instructions used by the apparatus provided in the above-mentioned embodiment of the present application, which includes a program for executing any of the methods provided in the above-mentioned embodiment of the present application.

[0424] The computer storage medium can be any available medium or data storage device that can be accessed by a computer, including but not limited to magnetic storage (such as floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO)), optical storage (such as CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (such as ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drives (SSDs)), etc.

[0425] The method provided in the embodiment of the present application can be applied to a terminal device or a network device.

[0426] Among them, the terminal equipment may also be referred to as user equipment (User Equipment, referred to as "UE"), mobile station (Mobile Station, referred to as "MS"), mobile terminal (Mobile Terminal), etc. Optionally, the terminal may have the ability to communicate with one or more core networks via a radio access network (Radio Access Network, RAN). For example, the terminal may be a mobile phone (or called a "cellular" phone), or a computer with mobile properties, etc. For example, the terminal may also be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device.

[0427] The network equipment includes a base station (e.g., an access point), which refers to a device in an access network that communicates with a wireless terminal through one or more sectors on an air interface. The base station can be used to convert received air frames to and from IP packets, and act as a router between the wireless terminal and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) network. The base station can also coordinate the attribute management of the air interface. For example, the base station can be a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, an evolved base station (NodeB or eNB or e-NodeB, evolutional Node B) in LTE, or a gNB in ​​a 5G system, etc. This is not limited in the embodiments of the present application.

[0428] The above method processing flow can be implemented by a software program, and the software program can be stored in a storage medium. When the stored software program is called, the above method steps are executed.

[0429] In summary, the embodiment of the present application proposes an adaptive UE-specific RS configuration method based on the positioning measurement value quality indication or the positioning measurement value quality indication judgment result, which avoids two problems that may occur in the system: first, when the measurement accuracy of the UE based on the cell-specific RS is good, the network configures UE-specific RS resources with higher measurement accuracy, resulting in a waste of RS resources; second, when the measurement accuracy of the UE based on the cell-specific RS is poor, the network configures UE-specific RS resources with lower measurement accuracy, resulting in the UE-specific RS resources being unable to meet the measurement accuracy.

[0430] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0431] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0432] These computer program instructions may also be stored in a computer readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0433] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0434] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A signal transmission method, characterized in that: The method includes: Receiving a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a first positioning measurement value quality indication reported by the terminal; measuring the UE-specific RS, and determining and reporting positioning information according to the measurement result of the UE-specific RS; The first positioning measurement value quality indicator is determined by the following steps: Obtain cell-specific reference signal resource configuration information; receiving a cell-specific RS according to the cell-specific reference signal resource configuration information; By measuring the cell-specific RS, a first positioning measurement value is determined, and a first positioning measurement value quality indicator and / or a first positioning measurement value quality indicator decision result is determined.

2. The method according to claim 1, characterized in that The determining the first positioning measurement value quality indication judgment result specifically includes: By comparing the first positioning measurement value quality indication with a preset threshold value, a decision result of whether the first positioning measurement value quality indication meets a performance indicator is determined.

3. The method according to claim 1, characterized in that The measuring the UE-specific RS, and determining and reporting positioning information according to the measurement result of the UE-specific RS, specifically includes: Determine a second positioning measurement value by measuring the UE-specific RS; determining a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value; Based on the first positioning measurement value and the second positioning measurement value, a third positioning measurement value is determined and reported.

4. The method according to claim 3, characterized in that The determining a third positioning measurement value based on the first positioning measurement value and the second positioning measurement value specifically includes: According to the first positioning measurement value quality indication and / or the first positioning measurement value quality indication judgment result, and the second positioning measurement value quality indication and / or the second positioning measurement value quality indication judgment result, the first positioning measurement value and the second positioning measurement value are processed to determine a third positioning measurement value.

5. The method according to any one of claims 1 to 4, characterized in that: The UE-specific RS or cell-specific RS includes one or a combination of the following RS: a new radio positioning reference signal NR PRS, a channel state information reference signal CSI-RS, and a synchronization block SSB.

6. The method according to any one of claims 1 to 4, characterized in that: The configuration information of the UE-specific reference signal resource or the configuration information of the cell-specific reference signal resource is obtained through one or a combination of the following signaling: Broadcast signaling; Radio Resource Control (RRC) signaling; Downlink control information DCI signaling; New Radio Location Protocol NRPP signaling.

7. The method according to any one of claims 1 to 4, characterized in that: Any of the positioning measurement values ​​includes at least one or a combination of the following contents: reference signal time difference RSTD, terminal sending and receiving time difference.

8. The method according to any one of claims 1 to 4, characterized in that: The first positioning measurement value quality indication or the second positioning measurement value quality indication includes at least one or a combination of the following contents: reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, measurement value error, and positioning measurement value quality indication judgment result.

9. A signal transmission device, characterized in that: The device includes: A memory for storing program instructions; The processor is used to call the program instructions stored in the memory and execute according to the obtained program: Receiving a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a first positioning measurement value quality indication reported by the terminal; measuring the UE-specific RS, and determining and reporting positioning information according to the measurement result of the UE-specific RS; The first positioning measurement value quality indicator is determined by the following steps: Obtain cell-specific reference signal resource configuration information; receiving a cell-specific RS according to the cell-specific reference signal resource configuration information; By measuring the cell-specific RS, a first positioning measurement value is determined, and a first positioning measurement value quality indicator and / or a first positioning measurement value quality indicator decision result is determined.

10. The device according to claim 9, characterized in that The determining the first positioning measurement value quality indication judgment result specifically includes: By comparing the first positioning measurement value quality indication with a preset threshold value, a decision result of whether the first positioning measurement value quality indication meets a performance indicator is determined.

11. The device according to claim 9, characterized in that The measuring the UE-specific RS, and determining and reporting positioning information according to the measurement result of the UE-specific RS, specifically includes: Determine a second positioning measurement value by measuring the UE-specific RS; determining a second positioning measurement value quality indication and / or a second positioning measurement value quality indication decision result according to the second positioning measurement value; Based on the first positioning measurement value and the second positioning measurement value, a third positioning measurement value is determined and reported.

12. The device according to claim 11, characterized in that The processor is further configured to: According to the first positioning measurement value quality indication and / or the first positioning measurement value quality indication judgment result, and the second positioning measurement value quality indication and / or the second positioning measurement value quality indication judgment result, the first positioning measurement value and the second positioning measurement value are processed to determine a third positioning measurement value.

13. The device according to any one of claims 9 to 12, characterized in that: The UE-specific RS or cell-specific RS includes one or a combination of the following RS: a new radio positioning reference signal NR PRS, a channel state information reference signal CSI-RS, and a synchronization block SSB.

14. The device according to any one of claims 9 to 12, characterized in that: The processor obtains configuration information of the UE-specific reference signal resource or the cell-specific reference signal resource through one or a combination of the following signaling: Broadcast signaling; Radio Resource Control (RRC) signaling; Downlink control information DCI signaling; New Radio Location Protocol NRPP signaling.

15. The device according to any one of claims 9 to 12, characterized in that: Any of the positioning measurement values ​​includes at least one or a combination of the following contents: reference signal time difference RSTD, terminal sending and receiving time difference.

16. The device according to any one of claims 9 to 12, characterized in that: The first positioning measurement value quality indication or the second positioning measurement value quality indication includes at least one or a combination of the following contents: reference signal received power RSRP, reference signal received quality RSRQ, signal to interference plus noise ratio SINR, measurement value error, and positioning measurement value quality indication judgment result.

17. A signal transmission device, characterized in that: The device includes: A receiving unit, configured to receive a UE-specific reference signal RS through a terminal-level UE-specific reference signal resource; wherein the UE-specific reference signal resource is determined by the network side based on a first positioning measurement value quality indication reported by the terminal; a determining unit, configured to measure the UE-specific RS, and determine and report positioning information according to the measurement result of the UE-specific RS; The first positioning measurement value quality indicator is determined by the following steps: Obtain cell-specific reference signal resource configuration information; receiving a cell-specific RS according to the cell-specific reference signal resource configuration information; By measuring the cell-specific RS, a first positioning measurement value is determined, and a first positioning measurement value quality indicator and / or a first positioning measurement value quality indicator decision result is determined.

18. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, and the computer-executable instructions are used to enable the computer to execute the method of any one of claims 1 to 8.

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