Method and apparatus for determining consistency of positioning estimates - Patents.com

Abstract

A method and apparatus for determining the integrity of a positioning estimate is disclosed, the apparatus including: a transmitter for sending a request message to a device to request collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; a receiver for receiving a response message from the device including the determined integrity service parameters and error boundary information; and a processor for determining the integrity of the positioning estimate according to the response message.

Description

[Technical Field]

[0001] The subject matter disclosed herein relates generally to wireless communications, and more particularly, but not exclusively, to methods and apparatus for determining the consistency of positioning estimates. [Background technology]

[0002] The following abbreviations and acronyms are defined herein, at least some of which may be referenced within this specification:

[0003] 3GPP (Third Generation Partnership Project), 5th Generation (5G), New Radio (NR), 5G Node B (gNB), Long Term Evolution (LTE), LTE Advanced (LTE-A), E-UTRAN Node B (eNB), Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), Evolved UMTS Terrestrial Radio Access Network (E-UTRAN), Wireless Local Area Networking (WLAN), Orthogonal Frequency Division Multiplexing (OFDM), Single-Carrier Frequency-Division Multiple Access (SC-FDMA), Access), Downlink (DL), Uplink (UL), User Equipment (UE), Network Equipment (NE), Radio Access Technology (RAT), Receiver (RX or Rx), Transmitter (TX or Tx), Physical Uplink Shared Channel (PUSCH), Configured Grant (CG), Channel State Information (CSI), Channel State Information Reference Signal (CSI-RS), Frequency Division Multiple Access (FDMA)Division Multiple Access), Index / Identifier (ID), Information Element (IE), Industrial Internet of Things (IIoT), Positioning Reference Signal (PRS), Radio Access Network (RAN), Radio Resource Control (RRC), Reference Signal (RS), Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Round Trip Time (RTT), System Frame Number (SFN), System Information Block (SIB), Sidelink (SL), Sounding Reference Signal (SRS), Synchronization Signal Block (SSB), Transmission Reception Point (TRP), Frequency Range 1 (FR1), Frequency Range 2 (FR2) 2), Incremental Redundancy (IR), Interface between gNB and 5GCN (NG), Radio Resource Management (RRM), Synchronization Signal (SS), Technical Report (TR), Technical Specification (TS), Universal Terrestrial Radio Access (UTRA), CSI reference signal received power (CSI-RSRP)power, CSI reference signal received quality (CSI-RSRQ), Evolved Universal Terrestrial Radio Access (E-UTRA), For Further Study (FFS), Global Navigation Satellite System (GNSS), NR Cell Global Identifier (NCGI), Node providing E-UTRA user plane and control plane protocol termination and connected to 5GC via NG interface (ng-eNB), NG Radio Access Network (NG-RAN), Standalone (SA), SS reference signal received power (SS-RSRP), SS reference signal received quality (SS-RSRQ), Universal Terrestrial Radio Access Network (UTRAN), Downlink-Positioning Reference Signal (DL-PRS), Non-Line-of-Sight (NLOS) Sight, Line of Sight (LOS), Dynamic-Grant (DG), Alert Limit (AL), Access Point (AP), Angle-of-Arrival (AoA), Absolute Radio Frequency Channel Number (ARFCN), Antenna Reference Point (ARP), Cell-ID (CID), Angle of Departure (AoD), Time Difference of Arrival (TDOA)Arrival, Do Not Use (DNU), Enhanced Cell-ID (ECID), Global Positioning System (GPS), Inertial Measurement Unit (IMU), Interface Specification (IS), Location Management Function (LMF), LTE Positioning Protocol (LPP), Metropolitan Beacon System (MBS), Multiple-Round Trip Time (Multi-RTT), NR Positioning Protocol Annex (NRPPa), Observed Time Difference Of Arrival (OTDOA), Protection Level (PL), Reference Signal Time Difference (RSTD), Space Based Augmentation System (SBAS), Time to Alert (TTA), Terrestrial Beacon System (TBS) Beacon System), Target Integrity Risk (TIR), Location Service (LCS), Relative Time Of Arrival (RTOA), Reference Signal Received Path Power (RSRPP).

[0004] In wireless communications, such as Third Generation Partnership Project (3GPP®) mobile networks, wireless mobile networks can provide seamless wireless communications to mobile wireless communication terminals, or user equipment (UEs). A wireless mobile network can be composed of multiple base stations, which can perform wireless communications with the UEs.

[0005] 5G New Radio (NR) is the latest in a series of 3GPP® standards that supports very high data rates with lower latency compared to its predecessor, LTE (4G) technology. 3GPP® defines two types of frequency ranges (FR): frequencies in the sub-6 GHz range (450-6000 MHz) are called FR1, and frequencies in the mmWave range (24.25 GHz-52.6 GHz) are called FR2. 5G NR supports both FR1 and FR2 frequency bands.

[0006] Enhancements to multi-TRP / panel transmission are being investigated, including improved reliability and robustness between ideal and non-ideal backhaul between these TRPs (Transmitting and Receiving Points). A TRP is a device that transmits and receives signals and is controlled by the gNB via the backhaul between the gNB and the TRP.

[0007] The integrity method refers to the reliability measures and associated procedures that ensure that the estimated position calculated by the positioning calculation entity can be trusted with a high degree of certainty. The positioning calculation entity may include, for example, the LMF (Location Server) for UE-assisted positioning methods, or the target UE for UE-based positioning methods.

[0008] In Release 17 of the 3GPP® specifications, UE-based GNSS integrity was introduced, which allows a UE to determine and report to a location server the integrity results of a calculated position determined using GNSS positioning methods. In Release 18, a Study Item Description (SID) was approved to study RAT-dependent integrity methods to measure the reliability of a UE's position estimates calculated using positioning techniques such as DL-TDoA, DL-AoD, multi-RTT, UL-TDoA, and UL-AoA.

[0009] An important starting point is to identify the error sources that contribute to the inaccuracy of a particular RAT-dependent positioning method that may affect the integrity of the final positioning estimate. Once the error sources are identified, appropriate procedures and signaling can be developed to notify Location Services (LCS) clients when such methods do not meet the conditions for the intended positioning operation. Summary of the Invention [Problem to be solved by the invention]

[0010] A method and apparatus for determining the integrity of a position estimate is disclosed. [Means for solving the problem]

[0011] According to a first aspect, there is provided an apparatus including: a transmitter that sends a request message to a device to request collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; a receiver that receives a response message from the device including the determined integrity service parameters and error boundary information; and a processor that determines the integrity of a positioning estimate according to the response message.

[0012] According to a second aspect, an apparatus is provided that includes: a receiver that receives a request message from a device requesting collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; a processor that determines a response message in response to the request message, the response message including the integrity service parameters and the error boundary information; and a transmitter that transmits the response message to a location server to determine the integrity of a positioning estimate.

[0013] According to a third aspect, there is provided a method including: a step of sending, by a transmitter, a request message to a device to request collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; a step of receiving, by a receiver, a response message from the device including the determined integrity service parameters and error boundary information; and a step of determining, by a processor, the integrity of a positioning estimate according to the response message.

[0014] According to a fourth aspect, there is provided a method including: receiving, by a receiver, a request message from a device requesting collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; determining, by a processor, a response message in response to the request message, the response message including the integrity service parameters and the error boundary information; and transmitting, by a transmitter, the response message to a location server to determine the integrity of the positioning estimate.

[0015] A more particular description of the embodiments will be made with reference to specific embodiments illustrated in the accompanying drawings, in which the embodiments will be described and explained with additional specificity and detail, considering that these drawings illustrate only some embodiments and, therefore, are not to be considered limiting in scope. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a schematic diagram illustrating a wireless communication system according to some implementations of the present disclosure. [Figure 2] FIG. 1 is a schematic block diagram illustrating components of a user equipment (UE) according to some implementations of the present disclosure. [Figure 3] FIG. 1 is a schematic block diagram illustrating components of a network equipment (NE) according to some implementations of the present disclosure. [Figure 4A] FIG. 1 is a schematic diagram illustrating an example of NR beam-based positioning according to some implementations of the present disclosure. [Figure 4B] FIG. 1 is a schematic diagram illustrating an example of a multi-cell RTT procedure according to some implementations of the present disclosure. [Figure 4C] FIG. 1 is a schematic diagram illustrating an example of relative range estimation using an existing single gNB RTT positioning framework, in accordance with some implementations of the present disclosure. [Figure 5A] FIG. 10 is a schematic diagram illustrating an example of enabling collection of DL-based measurement error bound information and associated integrity service parameters via request / response signaling, in accordance with some implementations of the present disclosure. [Figure 5B] FIG. 1 is a schematic diagram illustrating an example of enabling collection of UL-based measurement error bounds information and associated integrity service parameters via request / response signaling, in accordance with some implementations of the present disclosure. [Figure 6A] FIG. 10 is a schematic diagram illustrating an example of enabling collection of assistance data error boundary information and associated integrity service parameters via LMF-UE request / response signaling in accordance with some implementations of the present disclosure. [Figure 6B] FIG. 10 is a schematic diagram illustrating an example of enabling collection of assistance data error bounds information and associated integrity service parameters via LMF-NG-RAN node request / response signaling, in accordance with some implementations of the present disclosure. [Figure 7] 10 is a flowchart illustrating steps for determining the integrity of a positioning estimate by a UE or an LMF according to some implementations of the present disclosure. [Figure 8]1 is a flowchart illustrating steps for determining the integrity of a positioning estimate by a UE or a gNB, according to some implementations of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0017] As will be appreciated by one skilled in the art, aspects of the embodiments may be embodied as a system, apparatus, method, or program product. Accordingly, the embodiments may take the form of an all-hardware embodiment, an all-software embodiment (including firmware, resident software, microcode, etc.) or an embodiment combining software and hardware aspects.

[0018] Furthermore, one or more embodiments may take the form of a program product embodied in one or more computer-readable storage media that store machine-readable code, computer-readable code, and / or program code, hereinafter referred to as "code." The storage devices may be tangible, non-transitory, and / or non-transmittable.

[0019] References throughout this specification to "one embodiment," "an embodiment," "an example," "some embodiments," "some examples," or similar language mean that a particular feature, structure, or characteristic being described is included in at least one embodiment or example. Thus, throughout this specification, the phrases "in one embodiment," "in an example," "in some embodiments," and examples of similar language may, but do not necessarily, all refer to the same embodiment. They may or may not include all disclosed embodiments. A feature, structure, element, or characteristic described in connection with one or more embodiments may also be applicable to other embodiments unless expressly specified otherwise. The terms "including," "comprising," and "having," and variations thereof, mean "including, but not limited to," unless expressly specified otherwise.

[0020] An enumerated listing of items does not imply that any or all of the items are mutually exclusive unless expressly specified otherwise. The terms "a," "an," and "the" also refer to "one or more," and references of similar items expressed in the plural also include reference to one or more instances of the item unless expressly specified otherwise.

[0021] Throughout this disclosure, all terms such as "first," "second," "third," etc., are used solely as labels to refer to related devices, components, procedural steps, etc., without implying any spatial or chronological order, unless explicitly specified otherwise. For example, a "first device" and a "second device" may refer to two separately formed devices or two parts or components of the same device. In some cases, for example, a "first device" and a "second device" may be identical and arbitrarily named. Similarly, a "first step" of a method or process may occur or be carried out after or simultaneously with a "second step."

[0022] The term "and / or," as used herein, should be understood to refer to and include all possible combinations of one or more of the associated listed items. For example, "A and / or B" may refer to any one of the following three combinations: the presence of A alone, the presence of B alone, and the coexistence of both A and B. The character " / " generally indicates an "or" relationship between the associated items. However, it may also include an "and" relationship between the associated items. For example, "A / B" means "A or B," which may also include the coexistence of both A and B unless the context indicates otherwise.

[0023] Furthermore, the described features, structures, or characteristics of the embodiments may be combined in any suitable manner. In the following description, numerous specific details are provided, such as examples of programming, software modules, user selections, network transactions, database queries, database structures, hardware modules, hardware circuits, hardware chips, etc., to provide a thorough understanding of the embodiments. However, one skilled in the art will recognize that the embodiments may be practiced without one or more of the specific details, or with other methods, components, materials, etc. In other instances, well-known structures, materials, or operations are not shown or described in detail to avoid obscuring aspects of the embodiments.

[0024] Aspects of various embodiments are described below with reference to schematic flowchart illustrations and / or schematic block diagrams of methods, apparatus, systems, and program products. It will be understood that each block of the schematic flowchart illustrations and / or schematic block diagrams, and combinations of blocks in the schematic flowchart illustrations and / or schematic block diagrams, may be implemented by code. This code may be provided to a general-purpose computer, special-purpose computer, or other programmable data processing apparatus to generate a machine whose instructions, executed via a processor of the computer or other programmable data processing apparatus, create means for implementing the functions or acts specified in the schematic flowchart illustrations and / or schematic block diagrams.

[0025] Code may also be stored in a storage device that can direct a computer, other programmable data processing apparatus, or other device to function in a particular way, such that the instructions stored in the storage device produce an article of manufacture that includes instructions that implement the functions or acts specified in the schematic flowchart diagrams and / or schematic block diagrams.

[0026] The schematic flowchart diagrams and / or schematic block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of different apparatus, systems, methods, and program products according to various embodiments. In this regard, each block in the schematic flowchart diagrams and / or schematic block diagrams may represent a module, segment, or portion of code, including one or more executable instructions of code for implementing the specified logical function(s). However, those skilled in the art will recognize that the flowchart diagrams do not necessarily have to be performed in the order shown, and can be performed without one or more of the specific steps, or with other steps not shown.

[0027] It should also be noted that in some alternative implementations, the functions noted in a particular block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending on the functionality involved.

[0028] Figure 1 is a schematic diagram illustrating a wireless communication system. Figure 1 illustrates an embodiment of a wireless communication system 100. In one embodiment, the wireless communication system 100 may include user equipment (UE) 102 and network equipment (NE) 104. Although a particular number of UEs 102 and NEs 104 are shown in Figure 1, those skilled in the art will recognize that any number of UEs 102 and NEs 104 may be included within the wireless communication system 100.

[0029] The UE 102 may be referred to as a remote device, remote unit, subscriber unit, mobile, mobile station, user, terminal, mobile terminal, fixed terminal, subscriber station, user terminal, apparatus, device, user device, or other terminology used in the art.

[0030] In one embodiment, the UE 102 may be an autonomous sensor device, an alarm device, an actuator device, a remote control device, etc. In some other embodiments, the UE 102 may include a desktop computer, a laptop computer, a personal digital assistant (PDA), a tablet computer, a smartphone, a smart television (e.g., an internet-connected television), a set-top box, a game console, a security system (including security cameras), a vehicle on-board computer, a network device (e.g., a router, a switch, a modem), etc. In some embodiments, the UE 102 includes a wearable device such as a smart watch, a fitness band, an optical head-mounted display, etc. The UE 102 may communicate directly with one or more of the NEs 104.

[0031] The NE 104 may also be referred to as a base station, access point, access terminal, base, Node-B, eNB, gNB, Home Node-B, relay node, apparatus, device, or any other terminology used in the art. Throughout this specification, references to a base station may refer to any one of the above-mentioned types of network equipment 104, such as eNBs and gNBs.

[0032] The NEs 104 may be distributed throughout a geographic region. The NEs 104 are typically part of a radio access network that includes one or more controllers communicatively coupled to one or more corresponding NEs 104. The radio access network is typically communicatively connected to one or more core networks that may be coupled to other networks, such as the Internet and the public switched telephone network. These and other elements of the radio access network and core network are not shown but are generally well known by those skilled in the art.

[0033] In one implementation, the wireless communication system 100 complies with 3GPP® 5G New Radio (NR). In some implementations, the wireless communication system 100 complies with 3GPP® protocols, the NE 104 transmits using an OFDM modulation scheme on the DL, and the UE 102 transmits using an SC-FDMA or OFDM scheme on the uplink (UL). However, more generally, the wireless communication system 100 may implement some other open or proprietary communication protocol, such as WiMAX. This disclosure is not intended to be limited to any particular wireless communication system architecture or protocol implementation.

[0034] The NE 104 may serve several UEs 102 within a serving area, e.g., a cell (or cell sector) or multiple cells, via wireless communication links. The NE 104 transmits DL communication signals to serve the UEs 102 within the time, frequency, and / or spatial domains.

[0035] A communication link is provided between the NE 104 and the UEs 102a, 102b, which may be, for example, an NR UL or DL ​​communication link. Some UEs 102 may communicate simultaneously over different radio access technologies (RATs), such as NR and LTE. Direct or indirect communication links between two or more NEs 104 may be provided.

[0036] The NE 104 may also include one or more transmission / reception points (TRPs) 104a. In some embodiments, the network equipment may be a gNB 104 that controls several TRPs 104a. In addition, there is a backhaul between two TRPs 104a. In some other embodiments, the network equipment may be a TRP 104a controlled by a gNB.

[0037] A communication link is provided between the NE 104, 104a and the UE 102, 102a, respectively, which may be, for example, an NR UL / DL communication link. Some UEs 102, 102a may communicate simultaneously with different radio access technologies (RATs), such as NR and LTE.

[0038] In some embodiments, the UE 102a may be capable of simultaneously communicating with two or more TRPs 104a utilizing non-ideal or ideal backhaul. A TRP may be a transmission point of a gNB. Multiple beams may be used by the UE and / or the TRP. The two or more TRPs may be TRPs of different gNBs or the same gNB. That is, different TRPs may have the same cell ID or different cell IDs. The terms "TRP," "transmitting / receiving point," and "transmitting / receiving identity" may be used interchangeably throughout this disclosure.

[0039] The core network includes a location server, or Location Management Function (LMF) 106. The LMF 106 in the core network may be implemented as a hardware component, a software program or module, or a combination of hardware and software. The base station or gNB 104 may be communicatively coupled to the core network's LMF 106 via a wired or wireless communication link.

[0040] 2 is a schematic block diagram illustrating components of a user equipment (UE) according to one embodiment. The UE 200 may include a processor 202, a memory 204, an input device 206, a display 208, and a transceiver 210. In some embodiments, the input device 206 and the display 208 are combined into a single device, such as a touchscreen. In particular embodiments, the UE 200 may not include any input device 206 and / or display 208. In various embodiments, the UE 200 may include one or more processors 202 and may not include the input device 206 and / or the display 208.

[0041] In one embodiment, the processor 202 may include any well-known controller capable of executing computer-readable instructions and / or performing logical operations. For example, the processor 202 may be a microcontroller, microprocessor, central processing unit (CPU), graphics processing unit (GPU), auxiliary processing unit, field programmable gate array (FPGA), or similar programmable controller. In some embodiments, the processor 202 executes instructions stored in the memory 204 to perform the methods and routines described herein. The processor 202 is communicatively coupled to the memory 204 and the transceiver 210.

[0042] In one embodiment, memory 204 is a computer-readable storage medium. In some embodiments, memory 204 includes a volatile computer storage medium. For example, memory 204 may include dynamic RAM (DRAM), synchronous dynamic RAM (SDRAM), and / or static RAM (SRAM). In some embodiments, memory 204 includes a non-volatile computer storage medium. For example, memory 204 may include a hard disk drive, flash memory, or other suitable non-volatile computer storage device. In some embodiments, memory 204 includes both volatile and non-volatile computer storage media. In some embodiments, memory 204 stores data related to trigger conditions for transmitting measurement reports to network devices. In some embodiments, memory 204 also stores program code and associated data.

[0043] The input device 206, in one embodiment, may include any known computer input device, including a touch panel, buttons, a keyboard, a stylus, a microphone, etc. The input device 206 may be integrated with the display 208, for example, as a touch screen or similar touch-sensitive device.

[0044] Display 208, in one embodiment, may include any known electronically controllable display or display device. Display 208 may be designed to output visual, auditory, and / or tactile signals.

[0045] In one embodiment, transceiver 210 is configured to communicate wirelessly with network equipment. In a particular embodiment, transceiver 210 comprises a transmitter 212 and a receiver 214. Transmitter 212 is used to transmit UL communication signals to network equipment, and receiver 214 is used to receive DL communication signals from the network equipment.

[0046] The transmitter 212 and the receiver 214 may be any suitable type of transmitter and receiver. Although only one transmitter 212 and one receiver 214 are shown, the transceiver 210 may have any suitable number of transmitters 212 and receivers 214. For example, in some embodiments, the UE 200 includes multiple transmitter 212 and receiver 214 pairs for communicating over multiple wireless networks and / or radio frequency bands, each of the transmitter 212 and receiver 214 pairs configured to communicate over a different wireless network and / or radio frequency band.

[0047] 3 is a schematic block diagram illustrating components of a network equipment (NE) 300 according to one embodiment. The NE 300 may include a processor 302, a memory 304, an input device 306, a display 308, and a transceiver 310. As may be appreciated, the processor 302, the memory 304, the input device 306, the display 308, and the transceiver 310 may be similar to the processor 202, the memory 204, the input device 206, the display 208, and the transceiver 210 of the UE 200, respectively.

[0048] In some embodiments, the processor 302 controls the transceiver 310 to transmit DL signals or data to the UE 200. The processor 302 also controls the transceiver 310 to receive UL signals or data from the UE 200. In another example, the processor 302 may control the transceiver 310 to transmit DL signals including various configuration data to the UE 200.

[0049] In some embodiments, the transceiver 310 comprises a transmitter 312 and a receiver 314. The transmitter 312 is used to transmit DL communication signals to the UE 200, and the receiver 314 is used to receive UL communication signals from the UE 200.

[0050] The transceiver 310 may communicate with multiple UEs 200 simultaneously. For example, the transmitter 312 may transmit DL communication signals to the UEs 200. As another example, the receiver 314 may simultaneously receive UL communication signals from the UEs 200. The transmitter 312 and receiver 314 may be any suitable type of transmitter and receiver. Although only one transmitter 312 and one receiver 314 are shown, the transceiver 310 may have any suitable number of transmitters 312 and receivers 314. For example, the NE 300 may serve multiple cells and / or cell sectors, and the transceiver 310 includes a transmitter 312 and a receiver 314 for each cell or cell sector.

[0051] The present disclosure presents systems, apparatus, and methods for enhanced RAT-dependent integrity and procedures that enable reliable and trustworthy Uu (uplink or downlink) positioning.

[0052] To ensure reliable RAT-dependent positioning integrity, a framework and procedure design is proposed to support the exchange of reliability service parameters and error bound information between the UE, base station, and location server, sometimes called the Location Management Function (LMF).

[0053] Based on the type of positioning error and the integrity mode of operation, i.e., LMF-based or UE-based certainty, the type of certainty service parameters and error bound information may vary accordingly. These parameters may then be utilized to determine the positioning integrity of positioning estimates calculated based on one or more RAT-dependent positioning techniques.

[0054] NR positioning based on NR Uu signals and a standalone (SA) architecture (e.g., beam-based transmission) was specified for the first time in Release 16. Targeted use cases included commercial and regulatory (i.e., emergency services) scenarios as in Release 15. Performance requirements are provided in Table 1 below [3GPP® Technical Report TR 38.855].

[0055] [Table 1]

[0056] The current 3GPP® Release 17 recently defined the positioning performance requirements for commercial and IIot use cases in Table 2 [3GPP® Technical Report TR 38.857] as follows:

[0057] [Table 2]

[0058] The positioning techniques supported in Release 16 are listed in Table 3 [3GPP® Technical Specification TS 38.305].

[0059] [Table 3]

[0060] Individual positioning techniques, such as those shown in Table 3, may be dynamically configured and executed based on the requirements of the LMF and UE capabilities. Uu (uplink and downlink) positioning reference signals (PRS) transmissions enable the UE to perform UE positioning-related measurements, or the gNB to perform gNB positioning-related measurements, to enable calculation of the UE's absolute position estimate, and are configured per transmission / reception point (TRP), where a TRP may include a set of one or more beams. A conceptual overview is shown in FIG. 4A, which is a schematic diagram illustrating an example of NR beam-based downlink positioning according to some implementations of the present disclosure.

[0061] According to Release 16, the PRS may be transmitted by different base stations (e.g., serving base station and neighboring base station) using narrow beams on FR1 and FR2, as shown in Figure 4A, which is relatively different compared to LTE, where the PRS is transmitted throughout the cell.

[0062] In the example shown in FIG. 4A, the LMF 106 is in communication with three gNBs, each communicating with the UE 102 via a respective TRP: TRP1 of gNB1 104a, TRP2 of gNB2 104b, and TRP1 104c of gNB3. The PRS can be locally associated with the PRS resource ID and resource set ID of the base station (gNB or TRP). Similarly, UE positioning measurements, such as reference signal time difference (RSTD) and PRS RSRP measurements, are performed across beams (e.g., between different pairs of DL PRS resources or DL ​​PRS resource sets), as opposed to different cells as in LTE. In addition, there are additional UL positioning methods that the network utilizes to calculate the location of the target UE. Tables 4 and 5 below show the reference signal-to-measurement mappings required for each RAT-dependent positioning technique supported at the UE and gNB, respectively. RAT-dependent positioning techniques involve 3GPP® RATs and core network entities to perform location estimation of the UE, which is distinguished from RAT-independent positioning techniques that rely on GNSS, IMU sensors, WLAN, and Bluetooth technologies to perform positioning of the target device (i.e., UE).

[0063] [Table 4]

[0064] [Table 5]

[0065] The following RAT dependent positioning techniques are supported in Release 16 and Release 17 [3GPP® Technical Specification TS 38.305]: DL-TDoA DL-TDoA utilizes DL RSTD (and optionally DL PRS RSRP) of downlink signals received at a UE from multiple TPs. The UE measures the DL RSTD (and optionally DL PRS RSRP) of the received signals using assistance data received from a positioning server, and the resulting measurements are used, along with other configuration information, to determine the UE's position relative to neighboring TPs. DL-AoD The DL AoD positioning method utilizes measured DL PRS RSRPs of downlink signals received from multiple TPs at the UE. The UE measures the DL PRS RSRPs of the received signals using assistance data received from a positioning server, and the resulting measurements are used together with other configuration information to determine the UE's position relative to neighboring TPs. Multi-RTT The multi-RTT positioning method utilizes UE Rx-Tx measurements and DL PRS RSRPs of downlink signals received from multiple TRPs measured by the UE, and gNB Rx-Tx measurements and UL SRS-RSRPs measured at multiple TRPs of uplink signals transmitted from the UE. The UE uses the assistance data received from the positioning server to measure UE Rx-Tx measurements (and optionally DL PRS RSRP of the received signal), and the TRP uses the assistance data received from the positioning server to measure gNB Rx-Tx measurements (and optionally UL SRS-RSRP of the received signal). The measurements are used to determine the RTT at the positioning server, which is used to estimate the UE's position, as shown in Figure 4B. 4B is a schematic diagram illustrating an example of a multi-cell RTT procedure according to some implementations of the present disclosure. In this example, the round trip time RTT is equal to AB, where A is the period from the start of transmission of UL-SRS at the UE 402 to the start of reception of DL-RPS at the UE 404, and B is the period from the start of reception of UL-SRS at the gNB 412 to the start of transmission of DL-PRS at the gNB 414. Note that multi-RTT is only supported for UE-assisted / NG-RAN-assisted positioning techniques, as shown in Table 3. 4C is a schematic diagram illustrating an example of relative range estimation using an existing single-gNB RTT positioning framework in accordance with some implementations of the present disclosure. Figure 4C illustrates an implementation-based approach to calculating the relative distance between two UEs. In Figure 4C, the LMF 106 is in communication with the gNB 104, which is in communication with target UEs 102a, 102b, and 102c. Multi-RTT is used to obtain the absolute locations of the UEs, and the relative range (i.e., relative distance) between the two UEs can be calculated based on the absolute locations. This approach has high latency and is not efficient in terms of procedure and signaling overhead. E-CID / NR E-CID In the enhanced Cell ID (CID) positioning method, the UE's location is estimated using knowledge of its serving ng-eNB, gNB, and cells and is based on LTE signals. Information about the serving ng-eNB, gNB, and cells may be obtained by paging, registration, or other methods. NR enhanced Cell ID (NR E CID) positioning refers to techniques that use additional UE measurements and / or NR radio resources and other measurements to improve UE position estimation using NR signals. NR E-CID positioning may utilize some of the same measurements as the measurement control system in the RRC protocol, but the UE is generally not expected to make additional measurements solely for positioning purposes; i.e., the positioning procedure does not provide measurement configuration or measurement control messages, and the UE reports available measurements rather than being required to take additional measurement actions. UL-TDoA The UL TDOA positioning method utilizes UL RTOA (and optionally UL SRS-RSRP) at multiple RPs of uplink signals transmitted from a UE. The RPs measure the UL RTOA (and optionally UL SRS-RSRP) of the received signals using assistance data received from a positioning server, and the resulting measurements are used, along with other configuration information, to estimate the location of the UE. UL-AoA The UL AoA positioning method utilizes the measured azimuth and zenith of arrival at multiple RPs in the uplink transmitted from the UE. The RPs measure the A-AoA and Z-AoA of the received signal using assistance data received from a positioning server, and the resulting measurements are used, along with other configuration information, to estimate the UE's position.

[0066] The following RAT-independent positioning techniques are also supported in Release 16 and Release 17 [3GPP® Technical Specification TS 38.305]: Network-assisted GNSS method These methods utilize a UE equipped with a radio receiver capable of receiving GNSS signals. In the 3GPP® specifications, the term GNSS encompasses both global navigation satellite systems and regional / augmented navigation satellite systems. Examples of global navigation satellite systems include GPS, modernized GPS, Galileo, GLONASS, and the BeiDou Navigation Satellite System (BDS). Regional navigation satellite systems include the Quasi Zenith Satellite System (QZSS), while many augmentation systems are classified under the general term Space-Based Augmentation Systems (SBAS) and provide regional augmentation services. In this concept, different GNSS (eg GPS, Galileo, etc.) can be used individually or in combination to determine the location of the UE. Barometric pressure sensor positioning The barometric pressure sensor method utilizes a barometric pressure sensor to determine the vertical component of the UE's position. The UE measures the barometric pressure, optionally aided by assistance data, to calculate the vertical component of its position or to send the measurements to a positioning server for position calculation. This method should be combined with other positioning methods to determine the 3D position of the UE. WLAN positioning The WLAN positioning method utilizes WLAN measurements (AP identifiers and optionally other measurements) and a database to determine the UE's location. The UE measures received signals from WLAN [1] access points, optionally aided by assistance data, to send the measurements to a positioning server for position calculation. Using the measurement results and a reference database, the UE's location is calculated. Alternatively, the UE utilizes WLAN measurements and, optionally, WLAN AP assistance data provided by a positioning server to determine its location. Bluetooth positioning The Bluetooth positioning method utilizes Bluetooth measurements (beacon identifiers and optionally other measurements) to determine the location of a UE. The UE measures the received signals from Bluetooth [2] beacons. Using the measurements and a reference database, the location of the UE is calculated. The Bluetooth method can be combined with other positioning methods (e.g., WLAN) to improve the accuracy of UE positioning. TBS Positioning A Terrestrial Beacon System (TBS) consists of a network of ground-based transmitters that broadcast signals solely for positioning purposes. Current types of TBS positioning signals are the MBS (Metropolitan Beacon System) signal [3], and the Positioning Reference Signal (PRS) (TS36.211 [4]). A UE measures received TBS signals, optionally aided by assistance data, to calculate its position or to send measurements to a positioning server for position calculation. Motion sensor positioning The motion sensor method utilizes various sensors, such as accelerometers, gyros, and magnetometers, to calculate the displacement of the UE. The UE estimates the relative displacement based on a reference position and / or a reference time. The UE transmits a report containing the determined relative displacement, which can be used to determine the absolute position. This method should be used with other positioning methods for hybrid positioning.

[0067] The various DL measurements including DL PRS-RSRP, DL RSTD, and UE Rx-Tx time difference required for supported RAT dependent positioning techniques are shown in Table 6. The following measurement configurations are specified [3GPP® Technical Specification TS 38.215]: a) For each pair of cells, 4 pairs of DL RSTD can be performed, each measurement being performed between a different pair of DL PRS resources / resource sets with a single reference timing. b) Eight DL PRS RSRP measurements can be performed on different DL PRS resources from the same cell.

[0068] [Table 6A]

[0069] [Table 6B]

[0070] For convenience of explanation, the following KPIs for positioning completeness are defined in this disclosure:

[0071] Target Integrity Risk (TIR): The probability that the positioning error will exceed the Alarm Limit (AL) without alerting the user within the required Time to Alert (TTA).

[0072] Note that conventionally, TIR is usually defined as a probability per unit of time (eg, per hour, per second, or per independent sample).

[0073] Alarm Limit (AL): The maximum tolerable positioning error such that the positioning system is usable for its intended use. If the positioning error exceeds the AL, the positioning system should be declared unusable for its intended use to prevent loss of positioning integrity.

[0074] If the AL limits the positioning error in the horizontal plane or on the vertical axis, it is called the Horizontal Alert Limit (HAL) or Vertical Alert Limit (VAL), respectively.

[0075] Time to Alert (TAA): The maximum allowable elapsed time after the positioning error exceeds the Alarm Limit (AL) until the function providing the positioning integrity issues a corresponding alarm.

[0076] Integrity Availability: Integrity availability is the percentage of time that the PL is less than the required AL.

[0077] The Protection Level (PL) is a real-time upper bound on the positioning error at a required confidence level, which is determined by the TIR probability.

[0078] PL is a statistical upper bound on the positioning error (PE) that guarantees that the true error is greater than AL and the probability per unit time that PL is less than or equal to AL is less than the required TIR for a period longer than TTA, i.e., PL satisfies the following inequality: Probability per unit time [longer than TTA ((PE>AL) and (PL<=AL))] < required TIR

[0079] If the PL limits the positioning error in the horizontal plane or on the vertical axis, it is called a Horizontal Protection Level (HPL) or Vertical Protection Level (VPL), respectively. The specific formula for the PL may not be specified, as it is implementation-defined. To be considered valid, the PL simply must satisfy the above inequality.

[0080] The PL is used to indicate the availability of the positioning system; if the PL is greater than the AL, the system is considered unavailable. The PL establishes a stricter upper bound on the positioning error by considering additional events of concern that have a low occurrence rate (i.e., a low TIR) compared to the nominal events considered in the standard accuracy estimate alone. The lower the TIR, the more events of concern that need to be considered.

[0081] Events of concern that result in failure are events inherent to the positioning system and are typically caused by malfunctions of elements of the positioning system (e.g., failures in the constellation network or terrestrial network). Non-fault events of concern occur when there are errors in the positioning system inputs, but the event is not caused by a malfunction of the positioning system. For example, in the context of GNSS, non-fault events of concern include nominal effects experienced daily, such as poor satellite geometry, greater atmospheric gradients, and signal interruptions, all of which can degrade positioning performance without causing system failure. A common limitation of existing industrial functional safety standards is that only fault conditions are considered. However, in practice, non-fault conditions also have a significant contribution to the overall integrity risk budget and therefore must be monitored.

[0082] PL is necessary to ensure that all potential fault and non-fault events up to the required TIR are considered. This provides a measure to bound the tail of the distribution with greater certainty (per unit time) and ensure that only locations with verified positioning integrity within the TIR are included in the final positioning solution. In contrast, standard accuracy estimates consider only a subset of events of concern up to a nominal percentile (e.g., 2 sigma, 95%) based on the entire distribution of estimated position errors.

[0083] The TIR is a design constraint of the positioning system and represents the probability that the positioning error exceeds the AL but the positioning system does not alert the user within the required time period (i.e., TTA). In practice, the TIR is very small, e.g., <10 -7 The TIR in time is one failure allowed every 10 million hours (equivalent to about 1142 years).

[0084] A positioning integrity system failure is known as an integrity event, and an integrity event occurs when the positioning system outputs Hazardous Misleading Information (HMI). HMI occurs when positioning is declared available and the actual positioning error exceeds the AL without raising an alarm within the required TTA. Misleading Information (MI) occurs when the positioning system is declared available and the actual positioning error exceeds the PL. Typically, positioning systems are designed to tolerate some degree of MI as long as the system can continue to operate safely within the AL. To properly monitor the integrity of a positioning system, both fault and non-fault conditions that can lead to MI or HMI need to be characterized for the network and UE.

[0085] In this disclosure, a method and apparatus for determining the integrity of a positioning estimate is proposed to enable the integrity of a RAT-dependent positioning method.

[0086] In some examples, a scheme is provided that enables a procedure for the collection of integrity service parameters and associated error bound information for RAT dependent positioning methods based on a list of error sources that may contribute to events of concern that may be supported for LMF-based and UE-based integrity calculations.

[0087] In some examples, schemes are provided that enable efficient request and response signaling of RAT dependent integrity service parameters and error bound information regarding measurement errors according to configured positioning methods.

[0088] In some examples, schemes are provided that enable efficient request and response signaling of error bound information regarding RAT dependent integrity service parameters and assistance data errors according to configured positioning methods.

[0089] The above schemes and methods may be implemented separately or in combination with each other to support NR RAT-dependent positioning methods over the SL (PC5) interface.

[0090] In this disclosure, positioning-related reference signals may be referred to as reference signals used for positioning procedures or purposes, e.g., PRS, or reference signals that utilize existing reference signals such as CSI-RS or SRS, to estimate the location of a target UE, and the target UE may be referred to as a device or entity to be located or positioned. In various embodiments or examples, the term "PRS" may refer to any signal, such as a reference signal, that may or may not be used primarily for positioning.

[0091] In this disclosure, any reference made to position or location information may refer to an absolute position, a position relative to another node or entity, a range in terms of distance, a range in terms of direction, or a combination thereof.

[0092] The entire contents of the PCT application by the same inventors, entitled "METHODS AND APPARATUS OF POSITIONING INTEGRITY COMPUTATION," filed on the same day as this application, are incorporated herein by reference in their entirety and may be implemented in combination with embodiments of the present disclosure. Integrity service parameters for RAT-dependent positioning methods

[0093] In some examples, a procedure is proposed to support signaling exchange of integrity service parameters for different RAT-dependent positioning techniques for a positioning computation entity to compute real-time integrity. The integrity service parameters may include at least an integrity risk parameter, which may include a lower and upper bound of the integrity risk to satisfy the RAT-dependent integrity behavior defined by the following relationship: P(RAT-dependent error longer than TTA > bounds | not DNU) <= residual risk + IR allocation......(1) where TTA is the elapsed time during which the RAT-dependent positioning error may be higher than the alarm limit before an alert or warning message can be signaled to a positioning calculation entity, which may include an LMF (Location Server) for a UE-assisted positioning method, or in other implementations, a target UE for a UE-based positioning method; DNU is a "do not use" flag; residual risk is the probability of onset, defined per unit time, representing the probability that an event of concern will occur or onset; and IRallocation is defined as the range of integrity risk defined by the lower and upper bounds above. An event of concern is associated with an expected positioning error arising from a particular error source that exceeds a specific configured threshold, and may vary depending on the error source and the applicable positioning technique. In some implementations, a separate event of concern may be defined for each RAT-dependent integrity error source and may be signaled to the positioning calculation entity depending on the type of positioning model and associated integrity model. For positioning integrity calculation, a) LMF-based integrity, where the positioning integrity is calculated in the LMF; b) UE-based integrity, where the positioning integrity is calculated at the target UE; Two positioning integrity models are supported, including:

[0094] Table 7 lists RAT-dependent integrity error sources, each characterized as either a measurement error or a positioning assistance data error. Measurement error can be any error or discrepancy when performing the actual RAT-dependent positioning measurements, and can include errors resulting from hardware type, UE or device capabilities, software-related errors, etc.

[0095] [Table 7A]

[0096] [Table 7B]

[0097] According to one embodiment, irMinimum RAT-dependent <IRallocation RAT-dependent <irMaximum RAT-dependent IRallocations defined by RAT-dependent can be provided for each error source according to the LMF-based (A-1 to A-16 in Table 7) or UE-based (B-1 to B-6 in Table 7) integrity operation mode. RAT-dependent should be provided by the entity or node from which the error source may originate, i.e., the node or entity that performs the measurement, e.g., the NG-RAN (gNB) for UL-based positioning measurements or the UE for DL-based positioning measurements.

[0098] According to a further aspect, IRallocations RAT-dependentmay be signaled as part of the integrity service parameters, which may be signaled for each positioning message via broadcast signaling, e.g., a new positioning system information broadcast message (posSIB) or an LPP-dedicated (UE-specific) message.

[0099] In some implementations, an application layer having an internal or external location service (LCS) client may also define a target integrity risk in terms of a probability value that the positioning error is greater than an alarm limit without triggering an alert or warning message, based on calculated positioning estimates calculated using a RAT-dependent positioning method, a RAT-independent positioning method, or a combination of a RAT-dependent positioning method and a RAT-independent positioning method. RAT-dependent This may also be provided to the measurement entity, e.g., the gNB or the UE.

[0100] In some implementations, the UE may signal the TIR to the LMF via LPP signaling, e.g., an LPP ProvideCapabilityInformation message, a ProvideLocationInformation message, etc. In some other implementations, the LMF may signal the TIR received from an external LCS client to the UE via LPP signaling, e.g., an LPP ProvideAssistanceData message, a RequestLocationInformation message, etc.

[0101] According to a further aspect, the UE may use LPP signaling to request IR allocations per positioning method, for example, via an LPP RequestAssistanceData message. RAT-dependent The RAT may further require RAT-dependent integrity service parameters including:

[0102] According to another aspect, the signaled IR allocations are used to determine the probability of a defined RAT-dependent failure beginning or onset based on the associated error sources and the RAT-dependent integrity bounds characterized by the error distribution of each error source. The probability of onset of a defined RAT-dependent failure is also referred to as ResidualRisk in relation (1). The probability of onset of an event of concern or error occurrence may be determined at the entity where the error affecting the integrity calculation occurs, e.g., the UE, gNB, or LMF. Each event of concern is characterized by a MeanDuration (in time units such as milliseconds, seconds, minutes, etc.) that the event of concern spans. ResidualRisk and MeanDuration can also be used to determine the occurrence of an event of concern for RAT-dependent positioning at a given time based on the following formula: P(Event of concern exists) = Average duration * Probability of onset of event of concern...(2)

[0103] The RAT-dependent errors arising from error sources should be bounded based on the calculated mean and standard deviation of each error source, and the method for signaling such information depends on the type of error, i.e., measurement error or assistance data error. This does not exclude other types of errors identified that may affect the integrity calculation.

[0104] In some implementations, the measurement error integrity correlation time and / or occurrence probability may be reported to the location server (LMF) using LPP signaling. The integrity correlation time may be defined as the minimum time interval within which two sets of RAT-dependent measurement errors or assistance data errors for a given error are considered independent of each other, i.e., positioning errors within this time may be considered correlated (i.e., dependent on each other). This may be applicable to one or more of the errors shown in Table 7.

[0105] Thus, the integrity service parameters may include an integrity risk allocation minimum, an integrity risk allocation maximum, an integrity risk allocation value between the integrity risk allocation minimum and the integrity risk allocation maximum, an average duration of an error occurrence, a probability value for an error occurrence, an integrity correlation time, and / or a target integrity risk.

[0106] The location server may first determine whether the UE has the necessary capabilities to exchange or transfer integrity service-related information, the ability to determine error bounds for a particular positioning error, or a combination thereof. The location server (LMF) may use this capability information to trigger and initiate a request for integrity service and error bound information. The LMF may use LPP signaling such as RequestCapabilityInformation to request integrity service and error bound-related information from the UE, and the UE may use LPP ProvideCapabilityInformation to send the aforementioned capabilities in response. measurement error

[0107] According to one aspect, for LMF-based positioning integrity, the LMF may request DL-based measurement error boundary information and integrity service parameters from the UE according to a desired positioning method and associated positioning measurements, e.g., DL RSTD, DL PRS RSRP / RSRPP, UE Rx-Tx time difference measurements. Figure 5A is a schematic diagram illustrating an example of enabling collection of DL-based measurement error boundary information and associated integrity service parameters via request / response signaling according to some implementations of the present disclosure.

[0108] In the exemplary diagram of the signaling flow using LPP signaling shown in FIG. 5A, the steps for enabling collection of DL-based measurement error bound information and RAT-dependent integrity service parameters for LMF-based integrity are detailed as follows:

[0109] The location server (LMF) 106 may first use an LPP RequestLocationInformation message 502 to request the target UE 102 to provide error boundary information including the mean, standard deviation, variance, or any other statistical parameter associated with the error distribution and / or to provide RAT-dependent integrity service parameters for each of the DL-based measurements configured according to A-1, A-3, and A-6 of Table 7. That is, the LMF 106 may send a request message to the target UE 102 to request collection of integrity information, where the integrity information includes the integrity service parameters and error boundary information associated with the measurement error (i.e., the type of positioning error). In an enhanced implementation, for example, in the case of LOS and / or NLOS measurements, in a scenario where the measurement error is characterized by more than one distribution, the LMF 106 may request the type of error distribution in addition to the associated error boundary information. In another enhanced implementation, the LMF 106 may request information about whether the measurement error is associated with the LOS and / or NLOS measurements. This may be associated with a LOS / NLOS indicator, which may be a binary indicator such as [0 or 1] or a soft indicator such as [0, 0.1, 0.2, ..., 0.9, 1]. In another implementation, the LMF may provide a duration or time window over which the requested error bound information and integrity service parameters are evaluated. Integrity service parameters and measurement error bounds may be requested per positioning method. A request for integrity service parameters may include a request for integrity risk information such as TIR, IR allocation bounds, etc.

[0110] The target UE 102 may respond affirmatively or negatively to the LMF 106 depending on the availability of the requested integrity information.

[0111] The target UE 102 may respond with the requested information, e.g., DL-based measurement error bound information and / or RAT-dependent integrity service parameters, according to different described implementations, using the LPP ProvideLocationInformation message 504, if the information is available. The target UE 102 may calculate the mean, standard deviation, variance, or any other statistical parameter of the error associated with the performed measurements along with the relevant information to aid in calculating the error of a particular requested positioning measurement.

[0112] In the event that the measurement error bounds information and / or the associated integrity service parameters are unavailable, the target UE 102 may use the LPP ProvideLocationInformation message 506 to report the unavailability of the measurement error bounds information, the integrity service parameters, or a combination thereof.

[0113] The LMF 106 may determine the integrity of the position estimate according to the response message.

[0114] The measurement errors may include errors in measuring the downlink (DL) reference signal time difference (RSTD), uplink (UL) relative time of arrival (RTOA), UL angle of arrival (AoA), 5G Node B (gNB) receive-transmit (Rx-Tx) time difference measurement, UL positioning reference signal (PRS) reference signal received power (RSRP), UL PRS reference signal received path power (RSRPP), UE Rx-Tx time difference, DL PRS RSRP, and / or DL ​​PRS RSRPP.

[0115] The above procedure can be enabled using existing signaling mechanisms, as shown in Figure 5A. The following signaling excerpt is used as an illustration of the reported integrity parameters based on each DL-based measurement report:

[0116] [Table 8A]

[0117] [Table 8B]

[0118] [Table 8C]

[0119] The field descriptions in the NR-DL-TDOA-SignalMeasurementInformation are provided below in Table 8 for DL-TDoA-IntegrityRSTDBounds and in Table 9 for DL-TDoA-IntegrityServiceParameters.

[0120] [Table 9]

[0121] [Table 10]

[0122] The above measurement error bounds and integrity service parameters may be extended to DL-PRS RSRP, DL-PRS RSRPP, UE Rx-Tx time difference, and other positioning measurements reported to the LMF. In addition, while the above measurement error bounds and integrity service parameters are applicable to a single error distribution, in some implementations, multiple sets of these parameters may be associated with each probability error distribution.

[0123] In another implementation, in case of UE-based integrity, the DL-TDoA-Integrity-ServiceParameters and DL-AoD-Integrity-ServiceParameters may be signaled to the UE via broadcast signaling, e.g., using a new positioning SIB, to enable calculation of positioning integrity by UE-based positioning methods. In a further implementation, the aforementioned integrity service parameters may be signaled using UE-specific signaling, e.g., LPP ProvideAssistanceData.

[0124] According to further aspects, the measurement error bounds and integrity service parameters described above may be reported from the NG-RAN node to the LMF using NRPPa signaling, for example, using a measurement response message.

[0125] For LMF-based positioning integrity, the LMF may request UL-based measurement error boundary information and integrity service parameters from an NG-RAN node, e.g., a serving gNB, a neighboring gNB, according to a desired positioning method and associated positioning measurements, e.g., UL-RTOA, UL-AoA, etc. Figure 5B is a schematic diagram illustrating an example of enabling collection of UL-based measurement error boundary information and associated integrity service parameters via request / response signaling according to some implementations of the present disclosure.

[0126] In the exemplary diagram of the signaling flow using NRPPa signaling shown in FIG. 5B, the steps to enable collection of UL-based measurement error bound information and RAT-dependent integrity service parameters for LMF-based integrity are detailed as follows:

[0127] The LMF 106 may use the NRPPa Measurement Request message 512 to request the NG-RAN nodes, e.g., the serving gNB 104a, neighbor gNBs 104b, 104c, to provide error bound information including the mean, standard deviation, variance, or any other statistical parameter associated with the error distribution and / or to provide RAT-dependent integrity service parameters for each UL-based measurement configured according to A-2, A-4, and A-5 of Table 7. In an enhanced implementation, e.g., in the case of LOS and / or NLOS measurements, in a scenario where the measurement error is characterized by more than one distribution, the LMF 106 may request the type of error distribution in addition to the associated error bound information. In another enhanced implementation, the LMF 106 may request information about whether the measurement error is associated with the LOS and / or NLOS measurement. This may be associated with an LOS / NLOS indicator, which may be a binary indicator such as [0 or 1] or a soft indicator such as [0, 0.1, 0.2, ..., 0.9, 1]. In another implementation, the LMF may provide a duration or time window over which the requested error bound information and integrity service parameters are evaluated. Integrity service parameters and measurement errors may be requested per positioning method, e.g., UL-TDoA, UL-AoA, Multi-RTT. The request for integrity service parameters may include a request for integrity risk information such as TIR, IR allocation bounds, etc.

[0128] The NG-RAN node may respond affirmatively or negatively to the LMF 106 depending on the availability of the requested integrity information.

[0129] The NG-RAN node may respond with the requested information, e.g., UL-based measurement error bound information and / or RAT-dependent integrity service parameters, according to different described implementations, if the information is available, using the NRPPa Measurement Response message 514. The NG-RAN node may calculate the mean, standard deviation, variance, or any other statistical parameter of the error associated with the performed measurements along with the relevant information to aid in calculating the integrity of a particular requested positioning measurement.

[0130] In the event that the measurement error bounds information and / or associated integrity service parameters are unavailable, the NG-RAN node may use the NRPPa Measurement Response message 516 to report the unavailability of the measurement error bounds information, the integrity service parameters, or a combination thereof.

[0131] The above integrity request / response signaling may be achieved using the signaling interface between the NG-RAN node and the LMF, for example, using NRPPa Measurement Request and Response messages. Support data error

[0132] According to one aspect, in the case of UE-based positioning integrity, the UE may request assistance data error boundary information, and the LMF may respond to the UE with the requested assistance data error boundary and / or associated integrity service parameters according to the desired positioning method. Figure 6A is a schematic diagram illustrating an example of enabling collection of assistance data error boundary information and associated integrity service parameters via LMF-UE request / response signaling according to some implementations of the present disclosure.

[0133] In the exemplary diagram of the signaling flow using LPP signaling shown in FIG. 6A, the steps for enabling collection of assistance data error bound information for UE-based integrity and RAT-dependent integrity services are detailed as follows:

[0134] The UE 102 may use the LPP RequestAssistanceData message 602 to request the LMF 106 to provide error boundary information including the mean, standard deviation, variance, or any other statistical parameter associated with the assistance data error distribution and / or to provide RAT-dependent integrity service parameters for each of the DL-based measurements configured according to B-3, B-4, B-5, and B-6 of Table 7. That is, the UE 102 may send a request message to the LFM 106 to request collection of integrity information, where the integrity information includes the integrity service parameters and error boundary information associated with the assistance data error (i.e., the type of positioning error). In an enhanced implementation, for example, in a scenario where the assistance data is characterized by more than one distribution based on the type of assistance data, e.g., the TRP position may be assumed to be normally or uniformly distributed, the UE 102 may request the type of error distribution in addition to the associated error boundary information. In another implementation, the UE 102 may provide a duration or time window over which the requested assistance data error boundary information and integrity service parameters are evaluated. Integrity service parameters and assistance data error bounds may be required for each positioning method, e.g., DL-TDoA and / or DL-AoD. The request for integrity service parameters may include a request for integrity risk information such as TIR, IR allocation bounds, etc.

[0135] The LMF 106 may respond affirmatively or negatively to the UE 102 depending on the availability of the requested integrity information.

[0136] The LMF 106 may respond with the requested information, e.g., RAT-dependent assistance data boundary information and / or integrity service parameters, according to different described implementations, if the information is available, using the LPP ProvideAssistanceData message 604. The LMF 106 may calculate the mean, standard deviation, variance, or any other statistical parameter of the error associated with the assistance data along with the associated information to aid in calculating the error of a particular requested positioning measurement.

[0137] In the event that the assistance data error bounds information and / or the associated integrity service parameters are unavailable, the LMF 106 may use the LPP ProvideAssistanceData message 606 to indicate the unavailability of the assistance data error bounds information, the integrity service parameters, or a combination thereof.

[0138] The assistance data error for UE-based positioning integrity may further include TRP location, inter-TRP synchronization information (RTD information), SFN initialization time, TRP beam information including beam antenna information (such as Antenna Reference Point (ARP) location information, DL PRS beam information, and / or DL ​​PRS beam antenna information), expected RSTD, confidence intervals associated with the TRP location and expected RSTD, etc.

[0139] According to further aspects, in the case of LMF-based positioning integrity, the LMF may request assistance data error boundary information and integrity service parameters from an NG-RAN node, e.g., a serving gNB, a neighboring gNB, according to a desired positioning method, e.g., TRP location, ARP location, etc. Figure 6B is a schematic diagram illustrating an example of enabling collection of assistance data error boundary information and associated integrity service parameters via LMF-NG-RAN node request / response signaling according to some implementations of the present disclosure.

[0140] In the exemplary diagram of the signaling flow using NRPPa signaling shown in FIG. 6B, the steps for enabling collection of assistance data error bound information and RAT dependent integrity service parameters for LMF based integrity are detailed as follows:

[0141] The LMF 106 may use the NRPPa TRP Information Request message 612 to request the NG-RAN nodes, e.g., the serving gNB 104a, neighbor gNBs 104b, 104c, to provide error bound information including the mean, standard deviation, variance, or any other statistical parameter associated with the assistance data error distribution and / or to provide RAT-dependent integrity service parameters for each UL-based measurement configured according to A-7 to A-16 of Table 7. In an enhanced implementation, for example, in a scenario where particular assistance data is characterized by more than one distribution, e.g., TRP locations may be characterized as uniform or normal, the LMF 106 may request the type of error distribution in addition to the associated error bound information. In that case, error bounds and integrity service parameters must be provided for each error distribution model associated with that particular assistance data.

[0142] The NG-RAN node may respond affirmatively or negatively depending on the availability of the requested integrity information.

[0143] The NG-RAN node may respond with the requested information, e.g., assistance data error bound information and / or RAT-dependent integrity service parameters, according to the implementations described above, if the information is available, using the NRPPa TRP Information Response message 614. The NG-RAN node may calculate the mean, standard deviation, variance, or any other statistical parameter of the error associated with the requested assistance data along with related information to aid in calculating the integrity of a particular requested positioning assistance data error.

[0144] In the event that the assistance data error boundary information and / or the associated integrity service parameters are unavailable, the NG-RAN node may use the NRPPa TRP Information Response message 616 to report the unavailability of the assistance data error boundary information, the integrity service parameters, or a combination thereof.

[0145] The above integrity request / response signaling may be achieved using the signaling interface between the NG-RAN node and the LMF, for example, using NRPPa TRP Information Request and Response messages.

[0146] FIG. 7 is a flowchart illustrating steps for determining the integrity of a positioning estimate by a UE 200 or an LMF 106 according to some implementations of the present disclosure.

[0147] In step 702, the transmitter 212 of the UE 200 or the transmitter of the LFM 106 sends a request message to the device to request collection of integrity information, where the integrity information includes integrity service parameters and error boundary information associated with a type of positioning error.

[0148] In step 704, the receiver 214 of the UE 200 or the receiver of the LFM 106 receives a response message from the device that includes the determined integrity service parameters and error bound information.

[0149] In step 706, the processor 202 of the UE 200 or the processor of the LFM 106 determines the completeness of the position estimate according to the response message.

[0150] In some examples, the LFM 106 may transmit a request message, and the device may be any one or more of a positioning participating device or a device that transmits and / or receives positioning signals, such as a gNB 104, a TRP 104a, or a UE 102. The request message may be a RequestLocationInformation message 502, a Measurement Request message 512, or a TRP Information Request message 612, and the response message may be a ProvideLocationInformation message 504, a Measurement Response message 514, or a TRP Information Response message 614.

[0151] In some other examples, the UE 102 may send a request message and the device may be the LFM 106. The request message may be a RequestAssistanceData message 602 and the response message may be a ProvideAssistanceData message 604.

[0152] The request message may relate to one positioning method, multiple positioning methods, or all available positioning methods.

[0153] FIG. 8 is a flowchart illustrating steps for determining the integrity of a positioning estimate by a UE 200 or a gNB 300 according to some implementations of the present disclosure.

[0154] In step 802, the receiver 214 of the UE 200 or the receiver 314 of the gNB 300 receives a request message from a device requesting collection of integrity information, where the integrity information includes integrity service parameters and error boundary information associated with a type of positioning error.

[0155] In step 804, the processor 202 of the UE 200 or the processor 302 of the gNB 300 determines a response message including the integrity service parameters and error bound information in response to the request message.

[0156] In step 806, the transmitter 212 of the UE 200 or the transmitter 312 of the gNB 300 sends a response message to the location server to determine the completeness of the positioning estimate.

[0157] In one aspect, some example items of the present disclosure related to UE may be summarized as follows:

[0158] 1. An apparatus comprising: a transmitter for transmitting a request message to a device to request collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; a receiver for receiving a response message from the device, the response message including the determined integrity service parameters and error bound information; a processor for determining the integrity of the position estimate according to the response message; Equipped with.

[0159] 2. The device according to item 1, wherein the integrity information is related to a radio access technology (RAT) dependent positioning method, and the integrity service parameters are: Integrity risk allocation minimum, Integrity risk allocation maximum, an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value; the average duration of the occurrence of the error, The probability that an error occurs, Integrity correlation time, and / or Target Integrity Risk Includes.

[0160] 3. The apparatus according to item 1, wherein the error bound information includes a type of error distribution, a mean, a standard deviation, and / or a variance associated with the error distribution.

[0161] 4. The device according to item 1, wherein the type of positioning error includes a measurement error and / or an assistance data error.

[0162] 5. The apparatus according to item 4, wherein the measurement error includes an error in measuring a downlink (DL) reference signal time difference (RSTD), an uplink (UL) relative time of arrival (RTOA), a UL angle of arrival (AoA), a 5G Node B (gNB) receive-transmit (Rx-Tx) time difference measurement, a UL positioning reference signal (PRS) reference signal received power (RSRP), a UL PRS reference signal received path power (RSRPP), a UE Rx-Tx time difference, a DL PRS RSRP, and / or a DL PRS RSRPP.

[0163] 6. The apparatus according to item 4, wherein the measurement error relates to line-of-sight (LOS) or non-line-of-sight (NLOS) measurements, further including hard or soft value indications.

[0164] 7. The apparatus according to item 4, wherein the assistance data error includes an error in a transmit / receive point (TRP) location, a system frame number (SFN) initialization time, inter-TRP synchronization information, an antenna reference point (ARP) location information, DL PRS beam information, and / or DL ​​PRS beam antenna information.

[0165] 8. The device according to item 1, wherein the request message is associated with one positioning method.

[0166] 9. The device according to item 1, wherein the request message relates to a plurality of positioning methods.

[0167] 10. The apparatus according to item 1, wherein the receiver receives an indication related to unavailability of the integrity service parameter and error bound information associated with a type of positioning error.

[0168] 11. The device according to item 1, wherein the positioning method includes a DL Time Difference of Arrival (TDoA) positioning method, a DL Angle of Departure (AoD) positioning method, a Multi-Round Trip Time (Multi-RTT) positioning method, an Extended Cell ID (CID) positioning method, an UL TDOA positioning method, and / or an UL AoA positioning method.

[0169] 12. The device according to item 1, wherein the request message is transmitted upon receipt of a capability information request associated with the UE.

[0170] 13. The device according to item 1, wherein messages are exchanged via Long Term Evolution Positioning Protocol (LPP) signaling and / or NR Positioning Protocol Annex (NRPPa) signaling.

[0171] In another aspect, some example items of the present disclosure related to gNBs may be summarized as follows:

[0172] 14. An apparatus comprising: a receiver for receiving a request message from a device requesting collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; a processor responsive to the request message to determine a response message including integrity service parameters and error bound information; a transmitter for transmitting a response message to a location server to determine the integrity of the position estimate; Equipped with.

[0173] 15. The device according to item 14, wherein the integrity information is related to a radio access technology (RAT) dependent positioning method, and the integrity service parameters are: Integrity risk allocation minimum, Integrity risk allocation maximum, an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value; the average duration of the occurrence of the error, The probability that an error occurs, Integrity correlation time, and / or Target Integrity Risk Includes.

[0174] 16. The apparatus according to item 14, wherein the error boundary information includes a type of error distribution, a mean, a standard deviation, and / or a variance associated with the error distribution.

[0175] 17. The device according to item 14, wherein the type of positioning error includes a measurement error and / or an assistance data error.

[0176] 18. The apparatus according to item 17, wherein the measurement error includes an error in measuring a downlink (DL) reference signal time difference (RSTD), an uplink (UL) relative time of arrival (RTOA), a UL angle of arrival (AoA), a 5G Node B (gNB) receive-transmit (Rx-Tx) time difference measurement, a UL positioning reference signal (PRS) reference signal received power (RSRP), a UL PRS reference signal received path power (RSRPP), a UE Rx-Tx time difference, a DL PRS RSRP, and / or a DL PRS RSRPP.

[0177] 19. The device according to item 17, wherein the measurement error relates to line-of-sight (LOS) or non-line-of-sight (NLOS) measurements, further including hard or soft value indications.

[0178] 20. The apparatus according to item 17, wherein the assistance data error includes an error in a transmit / receive point (TRP) location, a system frame number (SFN) initialization time, inter-TRP synchronization information, an antenna reference point (ARP) location information, DL PRS beam information, and / or DL ​​PRS beam antenna information.

[0179] 21. The device according to item 14, wherein the request message is associated with one positioning method.

[0180] 22. The device according to item 14, wherein the request message is associated with a plurality of positioning methods.

[0181] 23. The apparatus according to item 14, wherein the transmitter transmits an indication related to unavailability of the integrity service parameter and error bound information associated with a type of positioning error.

[0182] 24. The device according to item 14, wherein the positioning method includes a DL Time Difference of Arrival (TDoA) positioning method, a DL Angle of Departure (AoD) positioning method, a Multi-Round Trip Time (Multi-RTT) positioning method, an Extended Cell ID (CID) positioning method, a UL TDOA positioning method, and / or a UL AoA positioning method.

[0183] 25. The apparatus according to item 14, wherein the request message is transmitted by the device upon receipt of a capability information request associated with the UE.

[0184] 26. The device according to item 14, wherein messages are exchanged via Long Term Evolution Positioning Protocol (LPP) signaling and / or NR Positioning Protocol Annex (NRPPa) signaling.

[0185] In a further aspect, some example items of the present disclosure relating to a UE method may be summarized as follows:

[0186] 27. A method comprising: sending, by a transmitter, a request message to a device to request collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; receiving, by the receiver, a response message from the device, the response message including the determined integrity service parameters and error bound information; determining, by the processor, the completeness of the position estimate according to the response message; Includes.

[0187] 28. The method according to item 27, wherein the integrity information is related to a radio access technology (RAT) dependent positioning method, and the integrity service parameters are: Integrity risk allocation minimum, Integrity risk allocation maximum, an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value; the average duration of the occurrence of the error, The probability that an error occurs, Integrity correlation time, and / or Target Integrity Risk Includes.

[0188] 29. The method according to item 27, wherein the error boundary information includes a type of error distribution, a mean, a standard deviation, and / or a variance associated with the error distribution.

[0189] 30. The method according to item 27, wherein the type of positioning error includes a measurement error and / or an assistance data error.

[0190] 31. The method according to item 30, wherein the measurement error includes an error in measuring a downlink (DL) reference signal time difference (RSTD), an uplink (UL) relative time of arrival (RTOA), a UL angle of arrival (AoA), a 5G Node B (gNB) receive-transmit (Rx-Tx) time difference measurement, a UL positioning reference signal (PRS) reference signal received power (RSRP), a UL PRS reference signal received path power (RSRPP), a UE Rx-Tx time difference, a DL PRS RSRP, and / or a DL PRS RSRPP.

[0191] 32. The method according to item 30, wherein the measurement error relates to a line-of-sight (LOS) or non-line-of-sight (NLOS) measurement, further comprising a hard or soft value designation.

[0192] 33. The method according to item 30, wherein the assistance data error includes an error in a transmit / receive point (TRP) location, a system frame number (SFN) initialization time, inter-TRP synchronization information, an antenna reference point (ARP) location information, DL PRS beam information, and / or DL ​​PRS beam antenna information.

[0193] 34. The method according to item 27, wherein the request message is associated with one positioning method.

[0194] 35. The method according to item 27, wherein the request message is associated with a plurality of positioning methods.

[0195] 36. The method according to item 27, wherein the receiver receives an indication related to unavailability of the integrity service parameter and error bound information associated with a type of positioning error.

[0196] 37. The method according to item 27, wherein the positioning method includes a DL Time Difference of Arrival (TDoA) positioning method, a DL Angle of Departure (AoD) positioning method, a Multi-Round Trip Time (Multi-RTT) positioning method, an Extended Cell ID (CID) positioning method, a UL TDOA positioning method, and / or a UL AoA positioning method.

[0197] 38. The method according to item 27, wherein the request message is sent upon receipt of a capability information request associated with the UE.

[0198] 39. The method according to item 27, wherein the messages are exchanged via Long Term Evolution Positioning Protocol (LPP) signaling and / or NR Positioning Protocol Annex (NRPPa) signaling.

[0199] In further aspects, some example items of the present disclosure regarding gNB methods can be summarized as follows:

[0200] 40. A method comprising: receiving, by a receiver, a request message from a device requesting collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; determining, by a processor, a response message in response to the request message, the response message including the integrity service parameters and the error bound information; sending, by the transmitter, a response message to the location server to determine the integrity of the position estimate; Includes.

[0201] 41. The method according to item 40, wherein the integrity information is related to a radio access technology (RAT) dependent positioning method, and the integrity service parameters are: Integrity risk allocation minimum, Integrity risk allocation maximum, an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value; the average duration of the occurrence of the error, The probability that an error occurs, Integrity correlation time, and / or Target Integrity Risk Includes.

[0202] 42. The method according to item 40, wherein the error bound information includes a type of error distribution, a mean, a standard deviation, and / or a variance associated with the error distribution.

[0203] 43. The method according to item 40, wherein the type of positioning error includes a measurement error and / or an assistance data error.

[0204] 44. The method according to item 43, wherein the measurement error includes an error in measuring a downlink (DL) reference signal time difference (RSTD), an uplink (UL) relative time of arrival (RTOA), a UL angle of arrival (AoA), a 5G Node B (gNB) receive-transmit (Rx-Tx) time difference measurement, a UL positioning reference signal (PRS) reference signal received power (RSRP), a UL PRS reference signal received path power (RSRPP), a UE Rx-Tx time difference, a DL PRS RSRP, and / or a DL PRS RSRPP.

[0205] 45. The method according to item 43, wherein the measurement error relates to a line-of-sight (LOS) or non-line-of-sight (NLOS) measurement, further comprising a hard or soft value indication.

[0206] 46. ​​The method according to item 43, wherein the assistance data error includes an error in a transmit / receive point (TRP) location, a system frame number (SFN) initialization time, inter-TRP synchronization information, an antenna reference point (ARP) location information, DL PRS beam information, and / or DL ​​PRS beam antenna information.

[0207] 47. The method according to item 40, wherein the request message is associated with one positioning method.

[0208] 48. The method according to item 40, wherein the request message is associated with a plurality of positioning methods.

[0209] 49. The method according to item 40, wherein the transmitter transmits an indication related to unavailability of the integrity service parameter and error bound information associated with a type of positioning error.

[0210] 50. The method according to item 40, wherein the positioning method includes a DL Time Difference of Arrival (TDoA) positioning method, a DL Angle of Departure (AoD) positioning method, a Multi-Round Trip Time (Multi-RTT) positioning method, an Extended Cell ID (CID) positioning method, a UL TDOA positioning method, and / or a UL AoA positioning method.

[0211] 51. The method according to item 40, wherein the request message is sent by the device upon receipt of a capability information request associated with the UE.

[0212] 52. The method according to item 40, wherein the messages are exchanged via Long Term Evolution Positioning Protocol (LPP) signaling and / or NR Positioning Protocol Annex (NRPPa) signaling.

[0213] Various embodiments and / or examples are disclosed to provide exemplary and explanatory information to enable those skilled in the art to practice the present disclosure, and any feature or component disclosed with reference to one embodiment or example is applicable to all embodiments or examples unless specifically indicated otherwise.

[0214] The embodiments may be embodied in other specific forms. The described embodiments are to be considered in all respects as illustrative and not restrictive. The scope is, therefore, indicated by the appended claims rather than the foregoing description. All changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope. [Explanation of symbols]

[0215] 100 Wireless Communication System 102 User Equipment (UE), UE, target UE 102a UE 102b UE 102c UE 104 Network Equipment (NE), NE, Network Equipment, Base Station or gNB, gNB 104a Transmission / Reception Point (TRP), TRP, NE, gNB1, Serving gNB 104b gNB2, adjacent gNB 104c gNB3, adjacent gNB 106 Location Management Function (LMF), LMF, Location Server (LMF) 200 UE 202 processors 204 memory 206 Input Devices 208 Display 210 Transceiver 212 Transmitter 214 Receiver 300 Network Equipment (NE), NE, gNB 302 processor 304 memory 306 Input Devices 308 Display 310 Transceiver 312 Transmitter 314 Receiver 402 UE starts transmitting UL-SRS 404 Start of DL-RPS reception at UE 412 Start of UL-SRS reception at gNB 414 Start of DL-PRS transmission in gNB 502 LPP RequestLocationInformation Message 504 LPP ProvideLocationInformation Message 506 LPP ProvideLocationInformation Message 512 NRPPa Measurement Request Message 514 NRPPa Measurement Response Message 516 NRPPa Measurement Response Message 602 LPP RequestAssistanceData Message 604 LPP ProvideAssistanceData Message 606 LPP ProvideAssistanceData Message 612 NRPPa TRP Information Request Message 614 NRPPa TRP Information Response Message 616 NRPPa TRP Information Response Message

Claims

1. a transmitter for transmitting a request message to a device to request collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; a receiver for receiving a response message from the device, the response message including the determined integrity service parameters and error bound information; a processor for determining the integrity of the position estimate according to the response message; An apparatus comprising:

2. The integrity information relates to a radio access technology (RAT) dependent positioning method, and the integrity service parameters include: Integrity risk allocation minimum, Integrity risk allocation maximum, an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value; the average duration of occurrence of said errors; a probability value of the occurrence of the error; Integrity correlation time, and / or Target Integrity Risk The apparatus of claim 1 , comprising:

3. The apparatus of claim 1 , wherein the error boundary information includes a type of error distribution, a mean, a standard deviation, and / or a variance associated with the error distribution.

4. The apparatus of claim 1 , wherein the types of positioning errors include measurement errors and / or assistance data errors.

5. 5. The apparatus of claim 4, wherein the measurement errors include errors in measurements of a downlink (DL) reference signal time difference (RSTD), an uplink (UL) relative time of arrival (RTOA), a UL angle of arrival (AoA), a 5G Node B (gNB) receive-transmit (Rx-Tx) time difference measurement, a UL positioning reference signal (PRS) reference signal received power (RSRP), a UL PRS reference signal received path power (RSRPP), a UE Rx-Tx time difference, a DL PRS RSRP, and / or a DL PRS RSRPP.

6. The apparatus of claim 4 , wherein the measurement error is associated with a line-of-sight (LOS) or non-line-of-sight (NLOS) measurement, further comprising a hard or soft value indication.

7. 5. The apparatus of claim 4, wherein the assistance data error includes an error in a transmit / receive point (TRP) location, a system frame number (SFN) initialization time, inter-TRP synchronization information, an antenna reference point (ARP) location information, DL PRS beam information, and / or DL ​​PRS beam antenna information.

8. The apparatus of claim 1 , wherein the request message is associated with one positioning method.

9. The apparatus of claim 1 , wherein the request message is associated with a plurality of positioning methods.

10. The apparatus of claim 1 , wherein the receiver receives an indication related to unavailability of the integrity service parameter and the error bound information associated with a type of the positioning error.

11. 2. The apparatus of claim 1, wherein the positioning method comprises a DL Time Difference of Arrival (TDoA) positioning method, a DL Angle of Departure (AoD) positioning method, a Multi-Round Trip Time (Multi-RTT) positioning method, an Extended Cell ID (CID) positioning method, an UL TDOA positioning method, and / or an UL AoA positioning method.

12. The apparatus of claim 1 , wherein the request message is sent upon receipt of a capability information request associated with a UE.

13. 2. The apparatus of claim 1, wherein the messages are exchanged via Long Term Evolution Positioning Protocol (LPP) signaling and / or NR Positioning Protocol Annex (NRPPa) signaling.

14. a receiver for receiving a request message from a device requesting collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; a processor responsive to the request message to determine a response message including the integrity service parameters and the error bound information; a transmitter for transmitting the response message to a location server to determine the integrity of the position estimate; An apparatus comprising:

15. sending, by a transmitter, a request message to a device to request collection of integrity information, the integrity information including integrity service parameters and error boundary information associated with a type of positioning error; receiving, by a receiver, a response message from the device, the response message including the determined integrity service parameters and error bound information; determining, by a processor, the integrity of the position estimate according to the response message; A method comprising:

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