Method and device for determining integrity of positioning estimation

Abstract

Methods and apparatus to determine the integrity of positioning estimates are disclosed. The apparatus includes: a transmitter that transmits, to a device, a request message for requesting collection of integrity information, where the integrity information includes error limit information associated with a type of positioning error and an integrity service parameter; a receiver that receives a response message including the determined integrity service parameter and error limit information from the device; and a processor that determines the integrity of the positioning estimate from the response message.

Description

Technical Field

[0001] The subject matter disclosed herein relates generally to wireless communications and, more particularly, but not limited to, to methods and apparatus for determining integrity of a positioning estimate. Background Art

[0002] The following abbreviations and acronyms are defined herein, at least some of which are referred to within the specification:

[0003] 3rd Generation Partnership Project (3GPP), fifth 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), world-wide interoperability for microwave access (WiMAX), evolved UMTS terrestrial radio access network (E-UTRAN), wireless local area network (WLAN), orthogonal frequency division multiplexing (OFDM), single carrier frequency division multiple access (SC-FDMA), downlink (DL), uplink (UL), user equipment (UE), network equipment (NE), radio access technology (RAT), reception or receiver (RX, or Rx), transmission or transmitter (TX, or Tx), physical uplink shared channel (PUSCH), configuration grant (CG), channel state information (CSI), channel state information reference signal (CSI-RS), frequency division multiple access (FDMA), 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), 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), 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), Provision of E-UTRA User Plane and Control Plane Protocol Terminations towards UE,Node (ng-eNB) connected to 5GC via NG interface, 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), Line-of-sight (LOS), Dynamic Grant (DG), Alarm Limit (AL), Access Point (AP), Angle of Arrival (AoA), Absolute Radio Frequency Channel Number (ARFCN), Antenna Reference Point (ARP), Cell ID (positioning method) (CID), Angle of Departure (AoD), Time Difference of Arrival (TDOA), Do Not Use (DNU), Enhanced Cell ID (positioning method) (E CID), Global Positioning System (GPS), Inertial Measurement Unit (IMU), Interface Specification (IS), Location Management Function (LMF), LTE Positioning Protocol (LPP), Metropolitan Beacon System (MBS), Multi-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), Target Integrity Risk (TIR), Location Service (LCS), Relative Time of Arrival (RTOA), Reference Signal Received Path Power (RSRPP). ,

[0004] In wireless communications such as the 3rd Generation Partnership Project (3GPP) mobile network, the wireless mobile network can provide seamless wireless communication services to wireless communication terminals with mobility, i.e., user equipment (UE). The wireless mobile network can be formed by multiple base stations, and the base stations can perform wireless communications with the UE.

[0005] 5G New Radio (NR) is the latest in the 3GPP standard series and supports very high data rates with lower latency than its predecessor LTE (4G) technology. Two types of frequency ranges (FR) are defined in 3GPP. Frequencies below the 6GHz range (from 450 to 6000MHz) are called FR1, and the millimeter wave range (from 24.25GHz to 52.6GHz) is called FR2. 5G NR supports both FR1 and FR2 frequency bands.

[0006] Enhancements to multi-TRP / panel transmissions are studied, which include improved reliability and robustness with respect to both ideal and non-ideal backhaul between these TRPs (Transmission Reception Points). A TRP is a device that sends and receives signals and is controlled by the gNB through the backhaul between the gNB and the TRPs.

[0007] Integrity methods refer to trusted measurements and associated processes that ensure that the estimated position calculated by the positioning calculation entity can be trusted with a high degree of certainty. For example, the positioning calculation entity may include a LMF (location server) for UE-assisted positioning methods or a target UE for UE-based positioning methods.

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

[0009] The key starting point is to identify the error sources that contribute to the inaccuracy of certain RAT-dependent positioning methods, which may affect the integrity of the final positioning estimate. After the identification of the error sources, suitable procedures and signaling can be developed to notify the location service (LCS) client when such methods do not meet the conditions for the expected positioning operation. Summary of the invention

[0010] Methods and apparatus for determining the integrity of a position estimate are disclosed.

[0011] According to a first aspect, an apparatus is provided, comprising: a transmitter, which sends a request message to a device for requesting collection of integrity information, wherein the integrity information includes error limit information and integrity service parameters associated with the type of positioning error; a receiver, which receives a response message from the device, the response message including the determined integrity service parameters and error limit information; and a processor, which determines the integrity of the positioning estimate based on the response message.

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

[0013] According to a third aspect, a method is provided, comprising: sending, by a transmitter, a request message for requesting collection of integrity information to a device, wherein the integrity information includes error limit information and integrity service parameters associated with the 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 limit information; and determining, by a processor, the integrity of the positioning estimate based on the response message.

[0014] According to a fourth aspect, a method is provided, comprising: receiving, by a receiver, a request message from a device requesting collection of integrity information, wherein the integrity information includes error limit information and integrity service parameters associated with the 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 limit information; and sending, by a transmitter, the response message to a location server to determine the integrity of the positioning estimate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] A more particular description of the embodiments will be presented by reference to specific embodiments illustrated in the accompanying drawings. Given that these drawings depict only some embodiments and are therefore not to be considered limiting in scope, these embodiments will be described and explained with additional specificity and detail through the use of the accompanying drawings, in which:

[0016] Figure 1 is a schematic diagram illustrating a wireless communication system according to some embodiments of the present disclosure;

[0017] Figure 2 is a schematic block diagram illustrating components of a user equipment (UE) according to some embodiments of the present disclosure;

[0018] Figure 3 is a schematic block diagram illustrating components of a network equipment (NE) according to some embodiments of the present disclosure;

[0019] Figure 4A is a schematic diagram illustrating an example of NR beam-based positioning according to some embodiments of the present disclosure.

[0020] Figure 4B is a schematic diagram illustrating an example of a multi-cell RTT process according to some embodiments of the present disclosure;

[0021] Figure 4C is a schematic diagram illustrating an example of relative range estimation using an existing single gNB RTT positioning framework according to some embodiments of the present disclosure;

[0022] Figure 5Ais a schematic diagram illustrating an example of implementing the collection of DL-based measurement error bound information and associated integrity service parameters via request / response signaling according to some embodiments of the present disclosure;

[0023] Figure 5B is a schematic diagram illustrating an example of implementing the collection of UL-based measurement error bound information and associated integrity service parameters via request / response signaling according to some embodiments of the present disclosure;

[0024] Fig. 6A is a schematic diagram illustrating an example of implementing the collection of assistance data error bound information and associated integrity service parameters via LMF-UE request / response signaling according to some embodiments of the present disclosure;

[0025] Figure 6B is a schematic diagram illustrating an example of implementing the collection of assistance data error bound information and associated integrity service parameters via LMF-NG-RAN node request / response signaling according to some embodiments of the present disclosure;

[0026] Figure 7 is a flow chart illustrating steps for determining the integrity of a positioning estimate by a UE or LMF according to some embodiments of the present disclosure; and

[0027] Figure 8 is a flow chart illustrating steps for determining the completeness of a positioning estimate by a UE or a gNB according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0028] As will be appreciated by those skilled in the art, aspects of the embodiments may be embodied as a system, apparatus, method, or program product. Thus, the embodiments may take the form of a complete hardware embodiment, a complete software embodiment (including firmware, resident software, microcode, etc.), or an embodiment combining software and hardware aspects.

[0029] Furthermore, one or more embodiments may take the form of a program product embodied in one or more computer-readable storage devices storing machine-readable code, computer-readable code, and / or program code, hereinafter referred to as “code.” The storage device may be tangible, non-transitory, and / or non-transmitting.

[0030] References to "one embodiment," "an embodiment," "an example," "some embodiments," "some examples," or similar language throughout this specification mean that the particular features, structures, or characteristics being described are included in at least one embodiment or example. Therefore, the phrases "in one embodiment," "in an example," "in some embodiments," and instances of similar language throughout this specification may, but need not, all refer to the same embodiment. It may or may not include all disclosed embodiments. Unless expressly specified otherwise, the features, structures, elements, or characteristics described in conjunction with one or some embodiments also apply to other embodiments. Unless expressly specified otherwise, the terms "include," "comprise," "have," and variations thereof mean "including but not limited to."

[0031] Unless expressly specified otherwise, the enumerated list 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 similar items expressed in the plural also include reference to one or more instances of the item.

[0032] Throughout this disclosure, unless otherwise expressly specified, the terms "first", "second", "third", etc. are all used as nomenclatures that are used only to reference related devices, components, process steps, etc., without implying any spatial or temporal order. For example, "first device" and "second device" may refer to two separately formed devices, or two parts or components of the same device. In some cases, for example, "first device" and "second device" may be the same and may be arbitrarily named. Similarly, the "first step" of a method or process may be performed or carried out after or simultaneously with the "second step".

[0033] It should be understood that the term "and / or" as used herein refers to and includes any and all possible combinations of one or more of the associated listed items. For example, "A and / or B" may refer to any of the following three combinations: only A exists, only B exists, and both A and B exist together. The character " / " generally indicates an "or" relationship of associated items. However, this may also include an "and" relationship of associated items. For example, "A / B" means "A or B", which may also include the presence of both A and B, unless the context indicates otherwise.

[0034] In addition, the features, structures or characteristics of the described embodiments may be combined in any suitable manner. In the following description, a number of 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, those skilled in the relevant art will recognize that the embodiments may be practiced without one or more of the specific details or using other methods, components, materials, etc. In other instances, known structures, materials, or operations are not shown or described in detail to avoid confusing aspects of the embodiments.

[0035] Aspects of various embodiments are described below with reference to schematic flow charts and / or schematic block diagrams of methods, devices, systems, and program products. It will be understood that each box in the schematic flow charts and / or schematic block diagrams, and the combination of boxes in the schematic flow charts and / or schematic block diagrams, can be implemented by code. The code can be provided to a processor of a multi-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine, so that instructions executed by the processor of the computer or other programmable data processing device can create a device for implementing the functions or actions specified in the schematic flow charts and / or schematic block diagrams.

[0036] The 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 specific manner so that the instructions stored in the storage device produce an article of manufacture including instructions that implement the functions or actions specified in the schematic flowchart and / or schematic block diagram.

[0037] The schematic flow charts and / or schematic block diagrams in the accompanying drawings illustrate the architecture, functions and operations of possible implementations of different devices, systems, methods and program products according to various embodiments. In this regard, each box in the schematic flow chart and / or schematic block diagram can represent a module, a fragment or a part of a code, which includes one or more executable instructions for implementing the code of (multiple) specified logical functions. However, those skilled in the relevant art will recognize that the flow chart does not have to be practiced in the sequence shown and can be practiced without one or more of the specific steps or with other steps not shown.

[0038] It should also be noted that in some alternative implementations, the functions annotated in the identified blocks may not occur in the order annotated in the drawings. For example, depending on the functions involved, two blocks shown in succession may actually be executed substantially simultaneously, or these blocks may sometimes be executed in reverse order.

[0039] Figure 11 is a schematic diagram illustrating a wireless communication system. It depicts an embodiment of a wireless communication system 100. In one embodiment, the wireless communication system 100 may include a user equipment (UE) 102 and a network equipment (NE) 104. Figure 1 A specific number of UEs 102 and NEs 104 are depicted in FIG. 1 , but those skilled in the art will recognize that any number of UEs 102 and NEs 104 may be included in the wireless communication system 100 .

[0040] UE 102 may be referred to as a remote device, a remote unit, a subscriber unit, a mobile device, a mobile station, a user, a terminal, a mobile terminal, a fixed terminal, a subscriber station, a user terminal, an apparatus, a device, a user equipment or by other terminology used in the art.

[0041] 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 computing device such as a desktop computer, a laptop computer, a personal digital assistant (PDA), a tablet computer, a smart phone, a smart TV (e.g., a TV connected to the Internet), a set-top box, a game console, a security system (including security cameras), a vehicle-mounted 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.

[0042] 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, device, equipment, or any other term used in the art. Throughout this specification, references to base stations may refer to any of the above reference types of network devices 104 such as eNBs and gNBs.

[0043] The NEs 104 may be distributed over a geographic area. 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 coupled to one or more core networks, which may be coupled to other networks, such as the Internet and a public switched telephone network. These and other elements of the radio access and core networks are not illustrated, but are generally known to those of ordinary skill in the art.

[0044] In one embodiment, the wireless communication system 100 complies with 3GPP 5G New Radio (NR). In some embodiments, the wireless communication system 100 complies with 3GPP protocols, wherein the NE 104 transmits on the DL using an OFDM modulation scheme, and the UE 102 transmits on the uplink (UL) using an SC-FDMA scheme or an OFDM scheme. However, more generally, the wireless communication system 100 may implement some other open or proprietary communication protocols, such as WiMAX. The present disclosure is not intended to be limited to implementations of any particular wireless communication system architecture or protocol.

[0045] NE 104 can serve multiple UEs 102 within a service area, such as a cell (or cell sector) or more cells, via wireless communication links. NE 104 sends DL communication signals to serve UE 102 in the time domain, frequency domain, and / or spatial domain.

[0046] A communication link is provided between the NE 104 and the UE 102a, 102b, which may be, for example, a NR UL or DL ​​communication link. Some UEs 102 may communicate using different radio access technologies (RATs) such as NR and LTE simultaneously. A direct or indirect communication link may be provided between two or more NEs 104.

[0047] The NE 104 may also include one or more transmit receive points (TRPs) 104a. In some embodiments, the network device may be a gNB 104 that controls multiple TRPs 104a. In addition, there is a backhaul between two TRPs 104a. In some other embodiments, the network device may be a TRP 104a controlled by a gNB.

[0048] A communication link is provided between the NE 104, 104a and the UE 102, 102a, respectively, which may be, for example, a NR UL / DL communication link. Some UEs 102, 102a may communicate using different radio access technologies (RATs) such as NR and LTE simultaneously.

[0049] In some embodiments, a UE 102a may be able to simultaneously communicate with two or more TRPs 104a utilizing non-ideal or ideal backhaul. A TRP may be a transmission point of a gNB. The UE and / or the TRP may use multiple beams. 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," "transmission reception point," and "transmit-receive identification" may be used interchangeably throughout this disclosure.

[0050] The core network includes a location server or location management function (LMF) 106. The LMF 106 in the core network can be implemented as a hardware component, a software program or module, or a combination of hardware and software. The base station or gNB 104 can be communicatively coupled to the LMF 106 of the core network via a wired or wireless communication link.

[0051] Figure 2 2 is a schematic block diagram illustrating components of a user equipment (UE) according to one embodiment. 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 touch screen. In some embodiments, UE 200 may not include any input device 206 and / or display 208. In various embodiments, UE 200 may include one or more processors 202 and may not include an input device 206 and / or display 208.

[0052] In one embodiment, the processor 202 may include any known controller capable of executing computer-readable instructions and / or capable of performing logical operations. For example, the processor 202 may be a microcontroller, a microprocessor, a central processing unit (CPU), a graphics processing unit (GPU), an auxiliary processing unit, a field programmable gate array (FPGA), or a 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.

[0053] In one embodiment, the memory 204 is a computer-readable storage medium. In some embodiments, the memory 204 includes a volatile computer storage medium. For example, the memory 204 may include a RAM, which includes a dynamic RAM (DRAM), a synchronous dynamic RAM (SDRAM), and / or a static RAM (SRAM). In some embodiments, the memory 204 includes a non-volatile computer storage medium. For example, the memory 204 may include a hard disk drive, a flash memory, or any other suitable non-volatile computer storage device. In some embodiments, the memory 204 includes both volatile and non-volatile computer storage media. In some embodiments, the memory 204 stores data related to the triggering condition for sending the measurement report to the network device. In some embodiments, the memory 204 also stores program code and related data.

[0054] In one embodiment, input device 206 may include any known computer input device including a touch panel, buttons, keyboard, stylus, microphone, etc. In some embodiments, input device 206 may be integrated with display 208, for example, as a touch screen or similar touch-sensitive display.

[0055] In one embodiment, the display 208 may include any known electronically controllable display or display device. The display 208 may be designed to output visual, audio, and / or tactile signals.

[0056] In one embodiment, the transceiver 210 is configured to communicate wirelessly with a network device. In some embodiments, the transceiver 210 includes a transmitter 212 and a receiver 214. The transmitter 212 is used to send UL communication signals to the network device, and the receiver 214 is used to receive DL communication signals from the network device.

[0057] 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 illustrated, 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 on multiple wireless networks and / or radio frequency bands, wherein each of the transmitter 212 and receiver 214 pairs is configured to communicate on a different wireless network and / or radio frequency band.

[0058] Figure 3 3 is a schematic block diagram illustrating components of a network device (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 can 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.

[0059] In some embodiments, the processor 302 controls the transceiver 310 to transmit a DL signal or data to the UE 200. The processor 302 may also control the transceiver 310 to receive a UL signal or data from the UE 200. In another example, the processor 302 may control the transceiver 310 to transmit a DL signal containing various configuration data to the UE 200.

[0060] In some embodiments, the transceiver 310 includes 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.

[0061] The transceiver 310 can communicate with multiple UEs 200 simultaneously. For example, the transmitter 312 can send DL communication signals to the UE 200. As another example, the receiver 314 can simultaneously receive UL communication signals from the UE 200. The transmitter 312 and the receiver 314 can be any suitable type of transmitter and receiver. Although only one transmitter 312 and one receiver 314 are shown, the transceiver 310 can have any suitable number of transmitters 312 and receivers 314. For example, the NE 300 can serve multiple cells and / or cell sectors, wherein the transceiver 310 includes a transmitter 312 and / or a receiver 314 for each cell or cell sector.

[0062] The present disclosure proposes systems, apparatuses and methods for enhanced RAT-related integrity and processes to achieve reliable and trustworthy Uu (uplink or downlink) positioning.

[0063] The design of a framework and process is proposed to support the exchange of integrity service parameters and error bound information among UE, base station and location server, which may also be referred to as location management function (LMF), in order to ensure reliable RAT-related positioning integrity.

[0064] Based on the type of positioning error and the integrity operation mode, i.e., LMF-based or UE-based integrity, the type of integrity service parameters and error bound information may vary accordingly. These parameters may then be utilized to determine the positioning integrity of the positioning estimate calculated based on one or more RAT-related positioning techniques.

[0065] NR positioning based on NR Uu signals and standalone (SA) architecture (e.g., beam-based transmission) is first specified in Release 16. Target use cases also include commercial and regulatory (i.e., emergency services) scenarios as in Release 15. The performance requirements are provided in Table 1 below [3GPP Technical Report TR 38.855]:

[0066] Table 1: Release 16 positioning performance requirements

[0067] Positioning error indoor outdoor Horizontal positioning For 80% of UEs, <3m For 80% of UEs, <10m Vertical positioning For 80% of UEs, <3m For 80% of UEs, <3m

[0068] The current 3GPP Release 17 has recently defined the positioning performance requirements for commercial and IIoT use cases in Table 2 [3GPP Technical Report TR 38.857] as follows:

[0069] Table 2: Release 17 positioning performance requirements

[0070]

[0071] The positioning technologies supported in Release 16 are listed in Table 3 [3GPP Technical Specification TS 38.305].

[0072] Table 3: UE positioning methods supported in Release 16

[0073]

[0074] Individual positioning techniques as indicated in Table 3 can be dynamically configured and performed based on the requirements of the LMF and UE capabilities. The transmission of Uu (uplink and downlink) positioning reference signals (PRS) enables the UE to make measurements related to UE positioning or the gNB to make measurements related to gNB positioning, thereby enabling the calculation of the absolute position estimate of the UE, and each transmission reception point (TRP) is configured, where the TRP can include a set of one or more beams. Concept Overview As Figure 4A As shown in the figure, the Figure 4A is a schematic diagram illustrating an example of NR beam-based downlink positioning according to some embodiments of the present disclosure.

[0075] According to Release 16, PRS can be sent by different base stations (e.g., serving and neighboring base stations) using narrow beams over FR1 and FR2, such as Figure 4A This is relatively different compared to LTE, where PRS is sent across the entire cell.

[0076] exist Figure 4A In the example shown in , the LMF 106 communicates with three gNBs, each of which in turn communicates with the UE 102 via a respective TRP, namely, TRP1 104a for gNB1, TRP1 104b for gNB2, and TRP1 104c for gNB3. The PRS can be locally associated with the PRS resource ID and resource set ID for the base station (gNB or TRP). Similarly, UE positioning measurements such as reference signal time difference (RSTD) and PRS RSRP measurements are made between beams (e.g., between different DL PRS resource pairs or DL ​​PRS resource sets), as opposed to different cells in the case of LTE. In addition, there are other UL positioning methods for the network to utilize in order to calculate the position of the target UE. The following Tables 4 and 5 show the reference signal to measurement mapping required for each of the supported RAT-related positioning techniques at the UE and gNB, respectively. RAT-dependent positioning techniques involve 3GPP RAT and core network entities to perform positioning estimation of the UE, which is distinguished from RAT-independent positioning techniques that rely on GNSS, IMU sensors, WLAN and Bluetooth technologies for positioning the target device (i.e., UE).

[0077] Table 4: UE measurements used to implement RAT-dependent positioning techniques

[0078]

[0079] Table 5: gNB measurements used to implement RAT-dependent positioning techniques

[0080]

[0081] The following RAT-related positioning technologies are supported in Release 16 and Release 17 [3GPP Technical Specification TS 38.305]:

[0082] DL-TDoA

[0083] The DL-TDOA positioning method utilizes the DL RSTD (and optionally the DL PRS RSRP) of downlink signals received from multiple TPs at the UE. The UE measures the DL RSTD (and optionally the DL PRS RSRP) of the received signal using assistance data received from the positioning server and uses the resulting measurements together with other configuration information to find the UE's position relative to neighboring TPs.

[0084] DL-AoD

[0085] The DL AoD positioning method utilizes the measured DL PRS RSRP of downlink signals received from multiple TPs at the UE. The UE measures the DL PRS RSRP of the received signal using assistance data received from the positioning server and uses the resulting measurements with other configuration information to find the UE's position relative to neighboring TPs.

[0086] Multi-RTT

[0087] The multi-RTT positioning method utilizes the UE Rx-Tx measurements and DL PRS RSRP of downlink signals received from multiple TRPs measured by the UE, and the gNB Rx-Tx measurements and UL SRS-RSRP measured at multiple TRPs of uplink signals sent by the UE.

[0088] The UE measures UE Rx-Tx measurements (and optionally DL PRS RSRP of received signals) using assistance data received from the positioning server, and TRP measures gNB Rx-Tx measurements (and optionally UL SRS-RSRP of received signals) using assistance data received from the positioning server. These measurements are used to determine the RTT at the positioning server, which is used to estimate the UE's position, such as Figure 4B as shown in .

[0089] Figure 4Bis a schematic diagram illustrating an example of a multi-cell RTT process according to some embodiments of the present disclosure. In this example, the round trip time RTT is equal to =A–B, where A is the period from the start of transmission of UL-SRS 402 at the UE to the start of reception of DL-PRS 404 at the UE, and B is the period from the start of reception of UL-SRS 412 at the gNB to the start of transmission of DL-PRS 414 at the gNB. It should be noted that the positioning technology for UE-assisted / NG-RAN-assisted only supports multi-RTT, as shown in Table 3.

[0090] Figure 4C is a schematic diagram illustrating an example of relative range estimation using an existing single gNB RTT positioning framework according to some embodiments of the present disclosure. Figure 4C The diagram shows a method for calculating the relative distance between two UEs based on an embodiment. Figure 4C In the example, LMF 106 communicates with gNB 104, which communicates with three target UEs 102a, 102b, 102c. Multi-RTT is used to obtain the absolute position of the UE, and the relative range (i.e., relative distance) between two UEs can be measured based on the absolute positioning. This method has high latency and is not an efficient method in terms of processing and signaling overhead.

[0091] E-CID / NR E-CID

[0092] Enhanced Cell ID (CID) positioning method, the UE's position is estimated using knowledge of its serving ng-eNB, gNB and cell, and is based on LTE signals. Information about the serving ng-eNB, gNB and cell can be obtained through paging, registration or other methods. NR Enhanced Cell ID (NR E CID) positioning refers to the use of additional UE measurements and / or NR radio resources and other measurements to improve the UE position estimate using NR signals.

[0093] Although NR E-CID positioning can utilize some of the same measurements as the measurement control system in the RRC protocol, the UE is generally not expected to perform additional measurements solely for positioning purposes; that is, the positioning process does not supply measurement configuration or measurement control messages, and the UE reports its available measurements rather than being required to perform additional measurement actions.

[0094] UL-TDoA

[0095] The UL TDOA positioning method utilizes the UL RTOA (and optionally the UL SRS-RSRP) at multiple RPs of uplink signals sent from the UE. The RP measures the UL RTOA (and optionally the UL SRS-RSRP) of the received signal using assistance data received from the positioning server, and uses the resulting measurements together with other configuration information to estimate the UE's position.

[0096] UL-AoA

[0097] The UL AoA positioning method utilizes the azimuth and vertex of arrival measured at multiple RPs of uplink signals transmitted by the UE. The RP measures the A-AoA and Z-AoA of the received signal using assistance data received from the positioning server and uses the resulting measurements together with other configuration information to estimate the UE's position.

[0098] The following RAT-independent positioning techniques are also supported in Release 16 and Release 17 [3GPP Technical Specification TS 38.305]:

[0099] Network-assisted GNSS method

[0100] These methods utilize UEs equipped with a radio receiver capable of receiving GNSS signals.In 3GPP specifications, the term GNSS covers both global and regional / augmented navigation satellite systems.

[0101] 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 of Space-Based Augmentation Systems (SBAS) and provide regional augmentation services.

[0102] In this concept, different GNSS (eg, GPS, Galileo, etc.) can be used alone or in combination to determine the location of the UE.

[0103] Air pressure sensor positioning

[0104] The air pressure sensor method uses an air pressure sensor to determine the vertical component of the UE's position. The UE measures the air pressure (optionally aided by assistance data) to calculate the vertical component of its position or transmits the measurement to a positioning server for positioning calculation.

[0105] This method should be used in conjunction with other positioning methods to determine the 3D position of the UE.

[0106] WLAN positioning

[0107] WLAN positioning methods use WLAN measurements (AP identifiers and optional other measurements) and a database to determine the UE's location. The UE measures the signals received from the WLAN[1] access point (optionally assisted by assistance data) and transmits the measurements to a positioning server for positioning calculations. Using the measurement results and a reference database, the UE's position is calculated.

[0108] Alternatively, the UE determines its position using WLAN measurements and optional WLAN AP assistance data provided by a positioning server.

[0109] Bluetooth positioning

[0110] The Bluetooth positioning method uses Bluetooth measurements (beacon identifiers and optional other measurements) to determine the location of the UE. The UE measures the signals received from the Bluetooth [2] beacons. Using the measurement results and a reference database, the UE's position is estimated. The Bluetooth method can be used in combination with other positioning methods (e.g., WLAN) to improve the positioning accuracy of the UE.

[0111] TBS Positioning

[0112] A Terrestrial Beacon System (TBS) consists of a network of ground-based transmitters that broadcast signals for positioning purposes only. Current types of TBS positioning signals are the MBS (Metropolitan Beacon System) signal [3] and the Positioning Reference Signal (PRS) (TS 36.211 [4]). The UE measures the received TBS signals (optionally with the help of assistance data) to estimate its position or transmits the measurements to a positioning server for positioning calculations.

[0113] Motion sensor positioning

[0114] The motion sensor method uses different sensors such as accelerometers, gyroscopes, and magnetometers to measure 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 including the determined relative displacement that can be used to determine the absolute position. This method should be used together with other positioning methods for hybrid positioning.

[0115] The different DL measurements including DL PRS-RSRP, DL RSTD and UE Rx-Tx time difference required for the supported RAT related positioning techniques are listed in Table 6. [3GPP Technical Specification TS 38.215] specifies the following measurement configurations:

[0116] a) Each pair of cells can perform 4 pairs of DL RSTD measurements. Each measurement is performed between different pairs of DL PRS resources / resource sets with a single reference timing.

[0117] b) It is possible to perform 8 DL PRS RSRP measurements on different DL PRS resources from the same cell.

[0118] Table 6: Required DL measurements for DL-based positioning methods

[0119]

[0120]

[0121] For the convenience of description, in this disclosure, the following KPIs for positioning integrity are defined:

[0122] Target Integrity Risk (TIR): The probability that the positioning error exceeds the Alarm Limit (AL) without warning the user within the Required Time to Alert (TTA).

[0123] It may be noted that traditionally, TIR is usually defined as a probability ratio per some time unit (e.g., per hour, per second, or per independent sample).

[0124] Alarm Limit (AL): The maximum allowable positioning error that a positioning system can be used for its intended application. If the positioning error exceeds AL, the positioning system should be declared unusable for the intended application to prevent loss of positioning integrity.

[0125] When AL delimits the positioning error in the horizontal plane or in the vertical axis, it is called the horizontal alarm limit (HAL) or the vertical alarm limit (VAL), respectively.

[0126] Time to Alarm (TTA): The maximum permissible elapsed time from when the positioning error exceeds the alarm limit (AL) until the function providing positioning integrity announces the corresponding alarm.

[0127] Integrity Availability: Integrity availability is the percentage of time that the PL is below the required AL.

[0128] The Protection Level (PL) is a real-time upper bound on the positioning error at a desired confidence level, where the confidence level is determined by the TIR probability.

[0129] PL is a statistical upper bound on the positioning error (PE), which ensures that, for times longer than TTA, the probability per unit time that the true error is greater than AL and PL is less than or equal to AL is less than the required TIR, i.e., PL satisfies the following inequality:

[0130] The probability per unit time [for longer than TTA, ((PE>AL) & (PL<=AL))] < the required TIR

[0131] It is important to note that when the PL bounds the positioning error in the horizontal plane or in the vertical axis, it is referred to as the Horizontal Protection Level (HPL) or Vertical Protection Level (VPL), respectively. Because this is implementation defined, a specific equation for the PL may not be specified. In order for the PL to be considered valid, it must satisfy the above inequality.

[0132] PL is used to indicate the availability of the positioning system, because when PL is greater than AL, the system is considered unavailable. PL establishes a tighter upper bound on the positioning error by considering additional dire events that have a lower occurrence (i.e., lower TIR) than the nominal events considered alone in the standard accuracy estimate. The lower the TIR, the more dire events need to be considered.

[0133] Failure dreadful events are events inherent to the positioning system and are typically caused by the failure of an element of the positioning system (e.g., a constellation or ground network failure). Failure-free dreadful events occur when the positioning system input is erroneous but the event is not caused by a failure of the positioning system. For example, in the GNSS context, failure-free dreadful events include nominal effects experienced every day, such as poor satellite geometry, large atmospheric gradients, and signal outages, all of which are capable of degrading positioning performance without causing system failure. A common limitation of existing industry functional safety standards is to consider only failure conditions. However, in practice, failure-free conditions also have a material contribution to the total integrity risk budget and must therefore be monitored.

[0134] The PL is necessary to ensure that all potential failure and no-failure events down to the required TIR are considered). It bounds the tail of the distribution with higher certainty (per unit time) and provides a measure for ensuring that only those position fixes for which position integrity has been verified within the TIR are included in the final position solution. In contrast, standard accuracy estimates consider only a subset of horrible events up to a nominal percentile (e.g., 2-sigma, 95%) based on the entire distribution of estimated position errors.

[0135] TIR is a design constraint on the positioning system and represents the probability that the positioning error exceeds AL, but the positioning system fails to alert the user within the required time period (i.e., TTA). In practice, TIR is very small. For example, <10 -7 / hr TIR conversion allows one failure every 10 million hours (equivalent to approximately 1142 years).

[0136] Positioning integrity system failures are referred to as integrity events and occur when the positioning system outputs Hazardously Misleading Information (HMI). HMI occurs when the actual positioning error exceeds AL without announcing an alarm within the required TTA when positioning is declared available. Misleading Information (MI) occurs when the actual positioning error exceeds PL when the positioning system is declared available. Typically, positioning systems are designed to tolerate a certain level of MI, provided that the system can continue to operate safely within the AL. In order to properly monitor the integrity of the positioning system, both faulty and non-faulty conditions that may lead to MI or HMI need to be characterized for the network and the UE.

[0137] In the present disclosure, methods and apparatus for determining integrity of positioning estimates are proposed to achieve integrity for RAT-dependent positioning methods.

[0138] In some examples, a scheme is provided that implements a process for collecting integrity service parameters and associated error bound information for RAT-related positioning methods based on a list of error sources that may contribute to catastrophic events, which can be supported for LMF-based and UE-based integrity calculations.

[0139] In some examples, a scheme is provided that enables efficient request and response signaling of RAT-related integrity service parameters and error bound information for measurement errors according to a configured positioning method.

[0140] In some examples, a scheme is provided that enables efficient request and response signaling of RAT-related integrity service parameters and error bound information for assistance data errors according to a configured positioning method.

[0141] The above-mentioned schemes or methods may be implemented individually or in combination with each other to support NR RAT-related positioning methods through the SL (PC5) interface.

[0142] In the present disclosure, positioning-related reference signals may refer to reference signals used for positioning processes or positioning purposes to facilitate estimation of the position of a target UE, for example, PRS, or utilizing existing reference signals such as CSI-RS or SRS; and a target UE may refer to a device or entity to be found or located. In various embodiments or examples, the term "PRS" may refer to any signal, such as a reference signal, which may or may not be primarily used for positioning.

[0143] In this disclosure, any reference to positioning or location information may refer to an absolute positioning, a relative positioning with respect to another node or entity, a distance range, a direction range, or a combination thereof.

[0144] All contents of the PCT application entitled “Method and Apparatus for Positioning Integrity Calculation” filed by the same inventor on the same date as the present patent application are incorporated herein by reference in their entirety and may be implemented in conjunction with the embodiments of the present disclosure.

[0145] Integrity service parameters for RAT-based positioning methods

[0146] In some examples, a process for supporting the signaling exchange of integrity service parameters is proposed for different RAT-related positioning technologies to facilitate the positioning measurement entity to calculate real-time integrity. The integrity service parameters may include at least integrity risk parameters, which may include integrity risk lower and upper limits to satisfy RAT-based integrity operations defined by the following relationship:

[0147] P(RAT-related error > limit for longer than TTA | not DNU) <= residual risk + IRallocation..........(1),

[0148] Wherein TTA is the elapsed time that the RAT-related positioning error may be above the alarm limit before an alarm or warning message can be signaled to the positioning measurement entity, which may include the LMF (location server) for UE-assisted positioning methods, or in other embodiments, the target UE for UE-based positioning methods; DNU refers to the "do not use" flag; the residual risk is the probability of occurrence, which is defined per unit time and represents the probability of a terrible event occurring or starting; and IRallocation is defined as the range of integrity risks defined by the lower and upper bounds mentioned above. The terrible event is coupled with the expected positioning error that exceeds a certain configured threshold and is caused by a special error source, which may vary depending on the error source and the applicable positioning technology. In some embodiments, a separate terrible event can be defined for each RAT-related integrity error source and can be signaled to the positioning measurement entity depending on the type of positioning model and associated integrity model. Two positioning integrity models are supported for positioning integrity measurement, including:

[0149] a) LMF-based integrity, where the positioning integrity is calculated at the LMF; and

[0150] b) UE-based integrity, where the positioning integrity is calculated at the target UE.

[0151] Table 7 is a list of RAT-related integrity error sources, each of which is characterized as a measurement error or positioning assistance data error. A measurement error may be any error or difference when making actual RAT-related positioning measurements, and may include errors caused by the type of hardware, capabilities of the UE or device, software-related errors, etc.

[0152] Table 7: RAT-related error sources and associated error distribution models

[0153]

[0154] According to one aspect, an irMinimum value may be provided for each error source according to the integrity operation mode based on LMF (A-1 to A-16 in Table 7) or UE (B-1 to B-6 in Table 7). RAT-dependent <IRallocation RAT-dependent <irMaximum RAT-dependent Defined IRallocations RAT-dependent IRallocations RAT-dependent It will be provided by the entity or node from which the source of error may originate, i.e. the node or entity making the actual measurements, e.g. the NG-RAN (gNB) for UL based positioning measurements or the UE for DL ​​based positioning measurements.

[0155] According to yet another aspect, IRallocations RAT-dependent It may be signaled as part of the integrity service parameters, which may be signaled per positioning method via broadcast signaling, e.g., a new Positioning System Information Broadcast message (posSIB) or an LPP dedicated (UE specific) message.

[0156] In some embodiments, the application layer with an internal or external location service (LCS) client may also define a target integrity risk, for example in terms of a probability value based on the calculated positioning estimate that the positioning error is greater than an alarm limit without triggering an alarm or warning message, which is calculated using a RAT-dependent positioning method, a RAT-independent positioning method, or a combination of RAT-dependent and RAT-independent positioning methods. This may be used to also define IRallocations RAT-dependent . This can also be provided to the measurement entity, e.g. gNB or UE.

[0157] In some embodiments, the UE may signal the TIR to the LMF via LPP signaling, such as LPP ProvideCapabilityInformation message, ProvideLocationInformation message, etc. In some other embodiments, the LMF may signal the TIR signal received from the external LCS client to the UE via LPP signaling, such as ProvideAssistanceData message, RequestLocationInformation message, etc.

[0158] According to yet another aspect, the UE may use LPP signaling, for example, via an LPP RequestAssistanceData message, to further request the IRallocations according to the positioning method. RAT-dependent RAT-related integrity service parameters.

[0159] According to another aspect, the signaled IRallocations are used to determine the probability of a defined RAT-related failure starting or initiating based on the associated error sources and the RAT-related integrity bounds characterized by the error distribution of each error source. The probability of the occurrence of the defined RAT-related failure is also referred to as ResidualRisk in relationship (1). The probability of the occurrence of a possible terrible event or error can be determined at the entity where the error affecting the integrity calculation originates, such as the UE, gNB or LMF. Each terrible event is characterized by the MeanDuration (in time units such as milliseconds, seconds, minutes, etc.) that the terrible event spans. Using the ResidualRisk and MeanDuration, the occurrence of a RAT-related positioning terrible event at a given time can also be determined based on the following equation:

[0160] P(presence of a terrible event) = average duration * probability of a terrible event occurring................(2)

[0161] The RAT-related errors caused by the error sources are bounded based on the calculated mean and standard deviation for each error source, where the method used to signal such information depends on the error type, i.e. measurement error or assistance data error. This does not exclude other types of errors that have been identified that may affect the integrity calculation.

[0162] In some embodiments, the integrity association time and / or the probability of measurement error occurrence may be reported to the location server (LMF) using LPP signaling. The integrity association time may be defined as the minimum time interval beyond which two sets of RAT-related measurements or assistance data errors for a given error are considered independent of each other, i.e., the positioning errors within this time may be considered to be correlated (i.e., dependent on each other). This can apply to one or more of the errors shown in Table 7.

[0163] Therefore, the integrity service parameters may include: a minimum integrity risk allocation value, a maximum integrity risk allocation value, an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value, an average duration of error occurrence, a probability value of error occurrence, an integrity association time and / or a target integrity risk.

[0164] The location server may first determine whether the UE has the capabilities required to exchange or transmit integrity service related information, the capability to determine the error bound 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 a response.

[0165] Measurement error

[0166] According to one aspect, in the case of LMF-based positioning integrity, the LMF may request DL-based measurement error limit information and integrity service parameters from the UE based on the required positioning method and associated positioning measurements, e.g., DL RSTD, DL PRS RSRP / RSRPP, UE Rx-Tx time difference measurement. Figure 5A is a diagram illustrating an example of implementing the collection of DL-based measurement error bound information and associated integrity service parameters via request / response signaling according to some embodiments of the present disclosure.

[0167] exist Figure 5A In the exemplary illustration of the signaling flow using LPP signaling shown in , the steps for implementing the collection of DL-based measurement error bound information and RAT-related integrity service parameters for LMF-based integrity are detailed as follows.

[0168] Using the LPP RequestLocationInformation message 502, the location server (LMF) 106 may first request the target UE 102 to provide error bound information for each of the configured DL-based measurements according to A-1, A-3, and A-6 in 7, which includes the mean, standard deviation, variance, or any other statistical parameter associated with the error distribution, and / or provide RAT-related integrity service parameters. That is, the LMF 106 may transmit a request message to the target UE 102 to request the collection of integrity information, wherein the integrity information includes error bound information and integrity service parameters associated with the measurement error (i.e., the type of positioning error). In an extended embodiment, in addition to the associated error bound information, the LMF 106 may also request the type of error distribution, for example, in a scenario where the measurement error is characterized by more than one distribution in the case of LOS and / or NLOS measurements. In another extended embodiment, the LMF 106 may have a request for information on whether the measurement error is associated with 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 embodiment, the LMF may provide a time duration or time window during which the requested error bound information and integrity service parameters are evaluated. The integrity service parameters and measurement error bounds may be requested per positioning method. The request for integrity service parameters may include a request for integrity risk information, such as TIR, IRallocation bounds, etc.

[0169] The target UE 102 may respond positively or negatively to the LMF 106 depending on the availability of the requested integrity information.

[0170] If the information is available, the target UE 102 may respond with the requested information, such as DL-based measurement error bound information and / or RAT-related integrity service parameters, according to the various embodiments described using the LPP ProvideLocationInformation message 504. The target UE 102 may calculate the mean, standard deviation, variance, or any other statistical parameter of the errors associated with the measurements made and the associated information to assist in calculating the errors of the specifically requested positioning measurements.

[0171] If the measurement error bound information and / or the associated integrity service parameters are not available, the target UE 102 may use the LPP ProvideLocationInformation message 506 to report the unavailability of the measurement error bound information, the integrity service parameters, or a combination thereof.

[0172] LMF 106 may determine the completeness of the position estimate based on the response message.

[0173] The measurement errors may include errors in the following measurements: 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.

[0174] Can be used Figure 5A The above process is implemented by using the existing signaling mechanism described in . The following signaling summary is used as an example illustration of each reporting integrity parameter based on DL measurement report.

[0175] NR-DL-TDOA-SignalMeasurementInformation

[0176]

[0177]

[0178]

[0179]

[0180]

[0181] Descriptions of the fields in NR-DL-TDOA-SignalMeasurementInformation are provided as follows DL-TDoA-IntegrityRSTDBounds in Table 8 and DL-TDoA-IntegrityServiceParameters in Table 9.

[0182] Table 8: DL-TDoA-IntegrityRSTDBounds fields

[0183]

[0184]

[0185] Table 9: DL-TDoA-Integrity-ServiceParameters field

[0186]

[0187] 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, which are reported to the LMF. In addition, the above measurement error bounds and integrity service parameters apply to a single error distribution, but in some embodiments, multiple sets of these parameters may be associated to each probability error distribution.

[0188] In another embodiment, in the case of UE-based integrity, DL-TDoA-Integrity-ServiceParameters and DL-AoD-Integrity-ServiceParameters may be signaled to the UE via broadcast signaling, for example, using a new positioning SIB to implement the positioning integrity measurement using a UE-based positioning method. In a further embodiment, the aforementioned integrity service parameters may be signaled using UE-specific signaling, for example, LPP ProvideAssistanceData.

[0189] According to yet another aspect, the above-mentioned measurement error bounds and integrity service parameters may be reported from the NG-RAN node to the LMF using NRPPa signaling, for example using a Measurement Response message.

[0190] In the case of LMF-based positioning integrity, the LMF may request UL-based measurement error bound information and integrity service parameters from the NG-RAN nodes, e.g., serving gNB, neighboring gNB, based on the required positioning method and associated positioning measurements, e.g., UL-RTOA, UL-AoA, etc. Figure 5B is a diagram illustrating an example of implementing the collection of UL-based measurement error bound information and associated integrity service parameters via request / response signaling according to some embodiments of the present disclosure.

[0191] exist Figure 5B In the exemplary illustration of the signaling flow using NRPPa signaling shown in , the steps for implementing the collection of UL-based measurement error bound information and RAT-related integrity service parameters for LMF-based integrity are detailed as follows.

[0192] The LMF 106 may use the NRPPa measurement request message 512 to request the NG-RAN node, e.g., the serving gNB 104a, the neighboring gNB 104b, 104c), to provide error bound information for each of the configured UL-based measurements according to A-2, A-4, and A-5 in Table 7, which includes the mean, standard deviation, variance, or any other statistical parameter associated with the error distribution, and / or provide RAT-related integrity service parameters. In an extended embodiment, in addition to the associated error bound information, the LMF 106 may also request the type of error distribution, for example, in the case of LOS and / or NLOS measurements, where the measurement error is characterized by more than one distribution. In another extended embodiment, the LMF 106 may have a request for information requesting whether the measurement error is associated with 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 embodiment, the LMF may provide a time duration or time window during which the requested error bound information and integrity service parameters are evaluated. The integrity service parameters and measured error may be requested based on the positioning method, e.g., UL-TDoA, UL-AoA, Multi-RTT. The integrity service parameter request may include a request for integrity risk information such as TIR, IRallocation bounds, etc.

[0193] The NG-RAN node may respond positively or negatively to the LMF 106 depending on the availability of the requested integrity information.

[0194] If the information is available, the NG-RAN node may respond with the requested information, such as UL-based measurement error bound information and / or RAT-related integrity service parameters, according to the various described embodiments 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 errors associated with the measurements made and the associated information to assist in calculating the integrity of the specifically requested positioning measurements.

[0195] If the measurement error bound information and / or the associated integrity service parameters are not available, the NG-RAN node may report the unavailability of the measurement error bound information, the integrity service parameters, or a combination thereof using the NRPPa measurement response message 516.

[0196] The above integrity request / response signaling can be achieved using the signaling interface between the NG-RAN node and the LMF, for example, using NRPPa measurement request and response messages.

[0197] Auxiliary data error

[0198] According to one aspect, in the case of UE-based positioning integrity, the UE can request auxiliary data error limit information, and the LMF can respond to the UE with the requested auxiliary data error limit information and / or related integrity service parameters according to the desired positioning method. Fig. 6A is a diagram illustrating an example of implementing the collection of assistance data error bound information and associated integrity service parameters via LMF-UE request / response signaling according to some embodiments of the present disclosure.

[0199] exist Fig. 6A In the exemplary illustration of the signaling flow using LPP signaling shown in , the steps for collecting auxiliary data error bound information and RAT-related integrity services for UE-based integrity implementation are detailed as follows.

[0200] The UE 102 may use the LPP RequestAssistanceData message 602 to request the LMF 106 to provide error bound information for each of the configured DL-based measurements according to B-3, B-4, B-5, and B-6 in Table 7, including the mean, standard deviation, variance, or any other statistical parameter associated with the auxiliary data error distribution, and / or provide RAT-related integrity service parameters. That is, the UE 102 may transmit a request message to the LMF 106 to request the collection of integrity information, wherein the integrity information includes error bound information associated with the auxiliary data error (i.e., the type of positioning error) and integrity service parameters. In an extended embodiment, in addition to the associated error bound information, the UE 102 may request the type of error distribution, for example, in a scenario where the auxiliary data error is characterized by more than one distribution based on the type of auxiliary data, for example, the TRP position may be assumed to be a normal distribution or a uniform distribution. In another embodiment, the UE 102 may provide a time duration / window during which the requested auxiliary data error bound information and integrity service parameters are evaluated. Integrity service parameters and assistance data error bounds may be requested per positioning method, eg, DL-TDoA and / or DL-AoD. The request for integrity service parameters may include a request for integrity risk information such as TIR, IRallocation bounds, etc.

[0201] LMF 106 may respond positively or negatively to UE 102 depending on the availability of the requested integrity information.

[0202] If the information is available, the LMF 106 may respond with the requested information, such as RAT-dependent assistance data limit information and / or integrity service parameters, according to different embodiments using an LPP ProvideAssistanceData message 604. The LMF 106 may calculate the mean, standard deviation, variance, or any other statistical parameter of the error associated to the assistance data and associated information to help calculate the error of the specifically requested positioning measurement.

[0203] If the assistance data error bound information and / or the associated integrity service parameters are not available, the LMF 106 may use the LPP ProvideAssistanceData message 606 to indicate the unavailability of the assistance data error bound information, the integrity service parameters, or a combination thereof.

[0204] The auxiliary data error for UE-based positioning integrity may further include TRP position, inter-TRP synchronization information (RTD information), SFN initialization time, TRP beam information including beam antenna information (such as antenna reference point (ARP) position information, DL PRS beam information and / or DL ​​PRS beam antenna information), expected RSTD, confidence intervals associated with the TRP position and expected RSTD, etc.

[0205] According to another aspect, in the case of LMF-based positioning integrity, the LMF may request auxiliary data error bound information and integrity service parameters from the NG-RAN node, e.g., serving gNB, neighboring gNB, etc., based on the required positioning method, e.g., TRP location, ARP location, etc. Figure 6B is a diagram illustrating an example of implementing the collection of assistance data error bound information and associated integrity service parameters via LMF-NG-RAN node request / response signaling according to some embodiments of the present disclosure.

[0206] exist Figure 6B In the exemplary illustration of the signaling flow using NRPPa signaling shown in , the steps for collecting auxiliary data error limit information and RAT-related integrity service parameters for LMF-based integrity are detailed as follows.

[0207] The LMF 106 may use the NRPPa TRP information request message 612 to request the NG-RAN node, e.g., the serving gNB 104a, the neighboring gNB 104b, 104c, to provide error bound information for each of the configured UL-based measurements according to A-7 to A-16 of Table 7, which includes the mean, standard deviation, variance or any other statistical parameter associated with the auxiliary data error distribution, and / or provide RAT-related integrity service parameters. In an extended embodiment, the LMF 106 may request the type of error distribution in addition to the associated error bound information, for example, in a scenario where a particular auxiliary data error is characterized by more than one distribution, for example, the TRP position may be characterized as a uniform or normal distribution. The error bounds and integrity service parameters then have to be provided according to the error distribution model associated to that particular auxiliary data.

[0208] The NG-RAN node may respond positively or negatively depending on the availability of the requested integrity information.

[0209] If the information is available, the NG-RAN node may respond with the requested information, such as assistance data error bound information and / or RAT-related integrity service parameters, according to the foregoing embodiments 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 to the requested assistance data and the associated information to help calculate the integrity of the specifically requested positioning assistance data error.

[0210] If the assistance data error limit information and / or the associated integrity service parameters are not available, the NG-RAN node may report the unavailability of the assistance data error limit information, the integrity service parameters, or a combination thereof using the NRPPa TRP Information Response message 616.

[0211] The above integrity request / response signaling can be achieved using the signaling interface between the NG-RAN node and the LMF, for example, using NRPPa TRP information request and response messages.

[0212] Figure 7 is a flow chart illustrating steps for determining the completeness of a positioning estimate by a UE 200 or LMF 106 according to some embodiments of the present disclosure.

[0213] At step 702, the transmitter 212 of the UE 200 or the transmitter of the LMF 106 sends a request message for requesting collection of integrity information to the device, wherein the integrity information includes error limit information associated with the type of positioning error and integrity service parameters.

[0214] At step 704, the receiver 214 of the UE 200 or the receiver of the LMF 106 receives a response message including the determined integrity service parameters and error margin information from the device.

[0215] At step 706, the processor 202 of the UE 200 or the processor of the LMF 106 determines the completeness of the positioning estimate based on the response message.

[0216] In some examples, the LMF 106 may send a request message; and the device may be a positioning participating device, or a device that sends and / or receives a positioning signal, for example, any one or more of the gNB 104, the TRP 104a, or the 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.

[0217] In some other examples, the UE 102 may send a request message; and the device may be the LMF 106. The request message may be a RequestAssistanceData message 602, and the response message may be a ProvideAssistanceData message 604.

[0218] The request message may relate to one positioning method, multiple positioning methods or all available positioning methods.

[0219] Figure 8 is a flow chart illustrating steps for determining the completeness of a positioning estimate by a UE 200 or a gNB 300 according to some embodiments of the present disclosure.

[0220] At 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, wherein the integrity information includes error limit information associated with the type of positioning error and integrity service parameters.

[0221] At step 804, the processor 202 of the UE 200 or the processor 302 of the gNB 300 determines a response message including integrity service parameters and error limit information in response to the request message.

[0222] At step 806, the transmitter 212 of the UE 200 or the transmitter 312 of the gNB 300 will send a response message to the location server for determining the integrity of the positioning estimate.

[0223] In one aspect, some items as examples of the present disclosure regarding a UE may be summarized as follows:

[0224] 1. A device comprising:

[0225] A transmitter, which sends a request message for requesting collection of integrity information to a device, wherein the integrity information includes error limit information associated with a type of positioning error and an integrity service parameter;

[0226] a receiver that receives a response message from the device, the response message including the determined integrity service parameters and error margin information; and

[0227] A processor determines the completeness of the position estimate based on the response message.

[0228] 2. The apparatus of item 1, wherein the integrity information is related to a radio access technology (RAT)-related positioning method; and the integrity service parameter comprises:

[0229] Integrity risk allocation minimum value,

[0230] The maximum value of the integrity risk allocation,

[0231] an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value,

[0232] The average duration of the error occurrence,

[0233] The probability of an error occurring is

[0234] integrity-related time, and / or

[0235] Target integrity risk.

[0236] 3. The apparatus according to item 1, wherein the error limit information includes: a type of error distribution, a mean value, a standard deviation and / or a variance associated with the error distribution.

[0237] 4. The device according to item 1, wherein the types of positioning errors include: measurement errors, and / or auxiliary data errors.

[0238] 5. The apparatus of item 4, wherein the measurement error comprises errors in the following measurements: 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), ULPRS reference signal received path power (RSRPP), UE Rx-Tx time difference, DL PRS RSRP and / or DL ​​PRS RSRPP.

[0239] 6. An apparatus according to item 4, wherein the measurement error is associated with a line-of-sight (LOS) or non-line-of-sight (NLOS) measurement further comprising a hard value or a soft value indication.

[0240] 7. An apparatus according to item 4, wherein the auxiliary data error includes errors in: transmission reception point (TRP) position, system frame number (SFN) initialization time, inter-TRP synchronization information, antenna reference point (ARP) position information, DLPRS beam information and / or DL ​​PRS beam antenna information.

[0241] 8. An apparatus according to item 1, wherein the request message is related to a positioning method.

[0242] 9. An apparatus according to item 1, wherein the request message is related to multiple positioning methods.

[0243] 10. An apparatus according to item 1, wherein the receiver receives an indication related to unavailability of error bound information and integrity service parameters associated with a type of positioning error.

[0244] 11. The apparatus according to item 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 enhanced cell ID (CID) positioning method, a UL TDOA positioning method and / or a UL AoA positioning method.

[0245] 12. An apparatus according to item 1, wherein the request message is sent when a capability information requirement associated with the UE is received.

[0246] 13. An apparatus according to item 1, wherein messages are exchanged via Long Term Evolution Positioning Protocol (LPP) signaling, and / or NR Positioning Protocol Annex (NRPPa) signaling.

[0247] In another aspect, some items as examples of the present disclosure regarding gNB may be summarized as follows:

[0248] 14. An apparatus comprising:

[0249] a receiver that receives a request message from a device requesting collection of integrity information, wherein the integrity information includes error limit information associated with a type of positioning error and integrity service parameters;

[0250] a processor that determines a response message in response to the request message, the response message including integrity service parameters and error margin information; and

[0251] A transmitter sends a response message to the location server to determine the integrity of the position estimate.

[0252] 15. The apparatus of item 14, wherein the integrity information is related to a radio access technology (RAT)-related positioning method; and the integrity service parameters include:

[0253] Integrity risk allocation minimum value,

[0254] The maximum value of the integrity risk allocation,

[0255] an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value,

[0256] The average duration of the error occurrence,

[0257] The probability of an error occurring is

[0258] integrity-related time, and / or

[0259] Target integrity risk.

[0260] 16. An apparatus according to item 14, wherein the error limit information includes: a type of error distribution, a mean value, a standard deviation and / or a variance associated with the error distribution.

[0261] 17. The apparatus according to item 14, wherein the types of positioning errors include: measurement errors, and / or auxiliary data errors.

[0262] 18. An apparatus according to item 17, wherein the measurement error includes errors in the following measurements: 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), ULPRS reference signal received path power (RSRPP), UE Rx-Tx time difference, DL PRS RSRP and / or DL ​​PRS RSRPP.

[0263] 19. The apparatus of clause 17, wherein the measurement error is associated with a line-of-sight (LOS) or non-line-of-sight (NLOS) measurement further comprising a hard value or a soft value indication.

[0264] 20. An apparatus according to item 17, wherein the auxiliary data error includes errors in: transmission reception point (TRP) position, system frame number (SFN) initialization time, inter-TRP synchronization information, antenna reference point (ARP) position information, DLPRS beam information and / or DL ​​PRS beam antenna information.

[0265] 21. An apparatus according to item 14, wherein the request message is related to a positioning method.

[0266] 22. An apparatus according to item 14, wherein the request message is related to multiple positioning methods.

[0267] 23. An apparatus according to item 14, wherein the transmitter sends an indication related to error limit information associated with the type of positioning error and unavailability of integrity service parameters.

[0268] 24. An apparatus 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 enhanced cell ID (CID) positioning method, a UL TDOA positioning method and / or a UL AoA positioning method.

[0269] 25. An apparatus according to item 14, wherein the request message is sent by the device when a capability information requirement associated with the UE is received.

[0270] 26. An apparatus according to item 14, wherein messages are exchanged via Long Term Evolution Positioning Protocol (LPP) signaling, and / or NR Positioning Protocol Annex (NRPPa) signaling.

[0271] In yet another aspect, some items as examples of the method of the present disclosure regarding a UE may be summarized as follows:

[0272] 27. A method comprising:

[0273] The transmitter sends a request message for requesting to collect integrity information to the device, wherein the integrity information includes error limit information associated with the type of positioning error and integrity service parameters;

[0274] receiving, by the receiver, a response message from the device, the response message including the determined integrity service parameter and error margin information; and

[0275] The processor determines the completeness of the position estimate based on the response message.

[0276] 28. The method of clause 27, wherein the integrity information is related to a radio access technology (RAT)-related positioning method; and the integrity service parameters include:

[0277] Integrity risk allocation minimum value,

[0278] The maximum value of the integrity risk allocation,

[0279] an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value,

[0280] The average duration of the error occurrence,

[0281] The probability of an error occurring is

[0282] integrity-related time, and / or

[0283] Target integrity risk.

[0284] 29. The method of claim 27, wherein the error bound information comprises: a type of error distribution, a mean value, a standard deviation and / or a variance associated with the error distribution.

[0285] 30. The method according to item 27, wherein the types of positioning errors include: measurement errors, and / or auxiliary data errors.

[0286] 31. A method according to item 30, wherein the measurement error includes errors in the following measurements: 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), ULPRS reference signal received path power (RSRPP), UE Rx-Tx time difference, DL PRS RSRP and / or DL ​​PRS RSRPP.

[0287] 32. A method according to item 30, wherein the measurement error is associated with a line-of-sight (LOS) or non-line-of-sight (NLOS) measurement further comprising a hard value or a soft value indication.

[0288] 33. A method according to item 30, wherein the auxiliary data error includes errors in: transmission reception point (TRP) position, system frame number (SFN) initialization time, inter-TRP synchronization information, antenna reference point (ARP) position information, DLPRS beam information and / or DL ​​PRS beam antenna information.

[0289] 34. A method according to item 27, wherein the request message is related to a positioning method.

[0290] 35. A method according to item 27, wherein the request message is related to multiple positioning methods.

[0291] 36. A method according to clause 27, wherein the receiver receives an indication related to unavailability of error bound information and integrity service parameters associated with a type of positioning error.

[0292] 37. A method according to item 27, wherein the positioning method includes: DL-arrival time difference (TDoA) positioning method, DL departure angle (AoD) positioning method, multi-round trip time (multi-RTT) positioning method, enhanced cell ID (CID) positioning method, UL TDOA positioning method and / or UL AoA positioning method.

[0293] 38. A method according to item 27, wherein the request message is sent when a capability information requirement associated with the UE is received.

[0294] 39. A method according to item 27, wherein messages are exchanged via Long Term Evolution Positioning Protocol (LPP) signaling, and / or NR Positioning Protocol Annex (NRPPa) signaling.

[0295] In yet another aspect, some items as examples of the method of the present disclosure regarding gNB may be summarized as follows:

[0296] 14. A method comprising:

[0297] Receiving, by the receiver, a request message from a device for collecting integrity information, wherein the integrity information includes error limit information associated with a type of positioning error and integrity service parameters;

[0298] determining, by the processor, a response message in response to the request message, the response message including integrity service parameters and error margin information; and

[0299] A response message is sent by the sender to the location server to determine the integrity of the position estimate.

[0300] 41. The method of clause 40, wherein the integrity information is related to a radio access technology (RAT)-related positioning method; and the integrity service parameters include:

[0301] Integrity risk allocation minimum value,

[0302] The maximum value of the integrity risk allocation,

[0303] an integrity risk allocation value between the minimum integrity risk allocation value and the maximum integrity risk allocation value,

[0304] The average duration of the error occurrence,

[0305] The probability of an error occurring is

[0306] integrity-related time, and / or

[0307] Target integrity risk.

[0308] 42. A method according to item 40, wherein the error bound information includes: a type of error distribution, a mean value, a standard deviation and / or a variance associated with the error distribution.

[0309] 43. A method according to item 40, wherein the types of positioning errors include: measurement errors, and / or auxiliary data errors.

[0310] 44. A method according to item 43, wherein the measurement error includes errors in the following measurements: 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), ULPRS reference signal received path power (RSRPP), UE Rx-Tx time difference, DL PRS RSRP and / or DL ​​PRS RSRPP.

[0311] 45. A method according to item 43, wherein the measurement error is associated with a line-of-sight (LOS) or non-line-of-sight (NLOS) measurement further comprising a hard value or a soft value indication.

[0312] 46. ​​An apparatus according to item 43, wherein the auxiliary data error includes errors in: transmission reception point (TRP) position, system frame number (SFN) initialization time, inter-TRP synchronization information, antenna reference point (ARP) position information, DLPRS beam information and / or DL ​​PRS beam antenna information.

[0313] 47. A method according to item 40, wherein the request message is related to a positioning method.

[0314] 48. A method according to item 40, wherein the request message is related to multiple positioning methods.

[0315] 49. A method according to item 40, wherein the transmitter sends an indication related to error limit information associated with the type of positioning error and the unavailability of integrity service parameters.

[0316] 50. A method according to item 40, wherein the positioning method includes: DL-arrival time difference (TDoA) positioning method, DL departure angle (AoD) positioning method, multi-round trip time (multi-RTT) positioning method, enhanced cell ID (CID) positioning method, UL TDOA positioning method and / or UL AoA positioning method.

[0317] 51. A method according to item 40, wherein the request message is sent by the device when a capability information requirement associated with the UE is received.

[0318] 52. A method according to item 40, wherein messages are exchanged via Long Term Evolution Positioning Protocol (LPP) signaling, and / or NR Positioning Protocol Annex (NRPPa) signaling.

[0319] Various embodiments and / or examples are disclosed to provide exemplary and explanatory information to enable those skilled in the art to put the present disclosure into practice. Unless otherwise specifically indicated, features or components disclosed with reference to one embodiment or example also apply to all embodiments or examples.

[0320] Embodiments may be practiced in other specific forms. The described embodiments should be considered in all respects as merely illustrative and not restrictive. Therefore, the scope is indicated by the appended claims rather than by the foregoing description. All changes that fall within the meaning and range of equivalents of the claims should be included within their scope.

Claims

1. A device comprising: a transmitter, the transmitter sending a request message for requesting collection of integrity information to a device, wherein the integrity information includes error limit information associated with a type of positioning error and an integrity service parameter; a receiver that receives a response message from the device, the response message including the determined integrity service parameter and error margin information; and A processor is provided for determining, based on the response message, the completeness of the position estimate.

2. The device according to claim 1, wherein: The integrity information is related to a radio access technology (RAT) related positioning method; and the integrity service parameters include: Integrity risk allocation minimum value, The maximum value of the integrity risk allocation, 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 the error, The probability value of the error occurring is integrity-related time, and / or Target integrity risk.

3. The device according to claim 1, wherein: The error limit information includes: a type of error distribution, a mean value, a standard deviation and / or a variance associated with the error distribution.

4. The device according to claim 1, wherein: The types of positioning errors include: measurement errors, and / or auxiliary data errors.

5. The device according to claim 4, wherein: The measurement error includes errors in the following measurements: downlink (DL) reference signal time difference (RSTD), uplink (UL) relative arrival time (RTOA), UL arrival angle (AoA), 5G Node B (gNB) receive and transmit (Rx-Tx) time difference measurement, UL positioning reference signal (PRS) reference signal received power (RSRP), ULPRS reference signal received path power (RSRPP), UE Rx-Tx time difference, DL PRS RSRP and / or DL ​​PRS RSRPP.

6. The device according to 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 value indication or a soft value indication.

7. The device according to claim 4, wherein: The auxiliary data error includes errors in: transmission reception point (TRP) position, system frame number (SFN) initialization time, inter-TRP synchronization information, antenna reference point (ARP) position information, DL PRS beam information and / or DL ​​PRS beam antenna information.

8. The device according to claim 1, wherein: The request message is related to a positioning method.

9. The device according to claim 1, wherein: The request message is related to multiple positioning methods.

10. The device according to claim 1, wherein: The receiver receives an indication regarding the error bound information associated with the type of positioning error and unavailability of the integrity service parameter.

11. The device according to claim 1, wherein: The positioning methods include: DL-time difference of arrival (TDoA) positioning method, DL angle of departure (AoD) positioning method, multiple round trip time (multi-RTT) positioning method, enhanced cell ID (CID) positioning method, UL TDOA positioning method and / or UL AoA positioning method.

12. The device according to claim 1, wherein: The request message is sent upon receiving a capability information requirement associated with the UE.

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

14. An apparatus comprising: a receiver, the receiver receiving a request message for collecting integrity information from a device, wherein the integrity information includes error limit information associated with a type of positioning error and integrity service parameters; a processor, the processor determining a response message in response to the request message, the response message including the integrity service parameter and the error limit information; and A transmitter sends the response message to a location server for determining the integrity of the positioning estimate.

15. A method comprising: Sending, by the transmitter, a request message for requesting collection of integrity information to the device, wherein the integrity information includes error limit information associated with the type of positioning error and integrity service parameters; receiving, by the receiver, a response message from the device, the response message including the determined integrity service parameter and error margin information; and The processor determines, based on the response message, the completeness of the position estimate.

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