Method and apparatus for transmitting and receiving wireless signal in wireless communication system

Abstract

A method for a first device to measure a signal in a wireless communication system according to at least one example disclosed herein may include: receiving first configuration information on a reference signal resource set and second configuration information on measurement of a reference signal through network signaling; measuring a reference signal based on the first configuration information and the second configuration information; and transmitting a measurement report based on a measurement of the reference signal, the measurement of the reference signal including a location-dependent phase measurement, and the second configuration information including information on at least one resource set in which the location-dependent phase is to be measured among the reference signal resource sets, and information about at least one time duration in which the positioning dependent phase is to be measured.

Description

Technical Field

[0001] The present disclosure relates to wireless communication systems, and more particularly, to methods and apparatus for transmitting and receiving wireless signals. Background Art

[0002] Generally, wireless communication systems are developing to cover a wide range in various ways to provide communication services such as audio communication services, data communication services, etc. Wireless communication is a multiple access system that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmission power, etc.). For example, the multiple access system can be any one of a code division multiple access (CDMA) system, a frequency division multiple access (FDMA) system, a time division multiple access (TDMA) system, an orthogonal frequency division multiple access (OFDMA) system, and a single carrier frequency division multiple access (SC-FDMA) system. Summary of the invention

[0003] Technical issues

[0004] An object of the present disclosure is to provide a method and an apparatus for efficiently performing a wireless signal transmission / reception process.

[0005] Those skilled in the art will understand that the objectives that can be achieved using the present disclosure are not limited to those specifically described above, and the above and other objectives that can be achieved by the present disclosure will be more clearly understood from the following detailed description.

[0006] Technical Solution

[0007] In one aspect of the present disclosure, a method for measuring a signal by a first device in a wireless communication system is provided. The method includes: receiving first configuration information about a resource set for a reference signal and second configuration information about measurement of the reference signal via network signaling; performing measurement of the reference signal based on the first configuration information and the second configuration information; and sending a measurement report based on the measurement of the reference signal. The measurement of the reference signal may include positioning-related phase measurement. The second configuration information may include: information about at least one resource set among the resource sets for the reference signal in which the positioning-related phase measurement is to be performed; and information about at least one time duration during which the positioning-related phase measurement is to be performed.

[0008] The information about the at least one time duration included in the second configuration information may include at least one of a period of the at least one time duration and a time domain pattern of the at least one time duration.

[0009] Second configuration information regarding measurement of a reference signal may be received from a location management function (LMF) node based on a positioning protocol.

[0010] Positioning-related phase measurements may be performed on reference signals provided in at least one set of resources during at least one time duration.

[0011] The first device may perform positioning-related phase measurements during a first time duration selected from among at least one time duration configured by the second configuration information. The selection of the first time duration may be performed based on network signaling.

[0012] The reference signal may be a downlink positioning reference signal (PRS). The first device may be a positioning target user equipment (UE) or a positioning reference unit (PRU) device.

[0013] The reference signal may be a sounding reference signal (SRS) transmitted by the positioning target UE. The first device may be a transmission and reception point (TRP) or a PRU device.

[0014] At least one time duration may be configured to be common to both the positioning target UE and the PRU.

[0015] In another aspect of the present disclosure, there is provided a processor-readable recording medium having a program recorded thereon for executing the above-mentioned signal measuring method.

[0016] In another aspect of the present disclosure, a first device is provided, which is configured to perform the above signal measurement method.

[0017] The first device may further include a transceiver.The first device may be a UE operating in a wireless communication system.

[0018] The first device may be a processing device configured to control a UE operating in a wireless communication system.

[0019] In another aspect of the present disclosure, a method for receiving a measurement report from a first device by a second device in a wireless communication system is provided. The method includes: sending first configuration information about a resource set for a reference signal and second configuration information about measurement of the reference signal to the first device via network signaling; and receiving a measurement report about the reference signal from the first device based on the first configuration information and the second configuration information. The measurement report may include a result of a positioning-related phase measurement. The second configuration information includes: information about at least one resource set in which the positioning-related phase measurement is to be performed among the resource sets for the reference signal; and information about at least one time duration during which the positioning-related phase measurement is to be performed.

[0020] In yet another aspect of the present disclosure, there is provided a second device configured to perform the above-mentioned reception of the measurement report.

[0021] Beneficial Effects

[0022] According to the embodiments of the present disclosure, a wireless signal transmission / reception process can be performed accurately and efficiently.

[0023] Those skilled in the art will appreciate that the effects that can be achieved using the present disclosure are not limited to the above specific description, and other advantages of the present disclosure will be more clearly understood from the following detailed description in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 illustrates physical channels used in a 3rd Generation Partnership Project (3GPP) system as an exemplary wireless communication system and a general signal transmission method using the physical channels;

[0025] Figure 2 illustrates the radio frame structure;

[0026] Figure 3 A resource grid of illustrated time slots;

[0027] Figure 4 illustrates an exemplary mapping of physical channels in time slots;

[0028] Figure 5 An exemplary physical downlink shared channel (PDSCH) reception and acknowledgement / negative acknowledgement (ACK / NACK) transmission process is illustrated.

[0029] Figure 6 An exemplary physical uplink shared channel (PUSCH) transmission procedure is illustrated.

[0030] Figure 7 Figure 1 shows an example of setting up a positioning protocol.

[0031] Figure 8 An example of OTDOA is illustrated.

[0032] Fig. 9 An example of multiple RTT is shown.

[0033] Fig.10 An operation process of a network node (eg, a higher node of a user equipment (UE), a location management function (LMF), etc.) according to an embodiment is illustrated.

[0034] Fig.11 The UE operation process for performing positioning measurements is illustrated.

[0035] Fig.12 is a diagram for explaining operations of a UE and a network according to an embodiment.

[0036] Fig.13 The operation of the first device according to one embodiment is illustrated.

[0037] Fig.14 The operation of the second device according to one embodiment is illustrated.

[0038] Figures 15 to 18 The diagram illustrates an example of a communication system 1 and a wireless device applicable to the present disclosure. DETAILED DESCRIPTION

[0039] Embodiments of the present disclosure are applicable to various wireless access technologies such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), and single carrier frequency division multiple access (SC-FDMA). CDMA can be implemented as a radio technology such as Universal Terrestrial Radio Access (UTRA) or CDMA2000. TDMA can be implemented as a radio technology such as Global System for Mobile Communications (GSM) / General Packet Radio Service (GPRS) / Enhanced Data Rates for GSM Evolution (EDGE). OFDMA can be implemented as a radio technology such as Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wireless Fidelity (Wi-Fi)), IEEE 802.16 (Worldwide Interoperability for Microwave Access (WiMAX)), IEEE 802.20, and Evolved UTRA (E-UTRA). UTRA is part of Universal Mobile Telecommunications System (UMTS). 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) is a part of Evolved UMTS (E-UMTS) using E-UTRA, LTE-Advanced (A) is an evolved version of 3GPP LTE. 3GPP NR (New Radio or New Radio Access Technology) is an evolved version of 3GPP LTE / LTE-A.

[0040] As more and more communication devices require greater communication capacity, enhanced mobile broadband communications relative to traditional radio access technologies (RATs) are needed. In addition, large-scale machine-type communications (MTC), which can provide various services anytime and anywhere by connecting multiple devices and objects, is another important issue to be considered for next-generation communications. Discussions are also underway to design communication systems that take into account services / UEs that are sensitive to reliability and latency. Therefore, discussions are underway to introduce new radio access technologies that take into account enhanced mobile broadband communications (eMBB), massive MTC, and ultra-reliable low-latency communications (URLLC). In this disclosure, for simplicity, this technology will be referred to as NR (new radio or new RAT).

[0041] For the sake of brevity, 3GPP NR is mainly described, but the technical concept of the present disclosure is not limited thereto.

[0042] For background information, definitions of terms, and abbreviations related to the present disclosure, the following documents may be incorporated by reference.

[0043] - 38.211: Physical channels and modulation

[0044] - 38.212: Multiplexing and channel compilation

[0045] - 38.213: Physical layer procedures for control

[0046] - 38.214: Physical layer procedures for data

[0047] - 38.215: Physical layer measurements

[0048] - 38.300: NR and NG-RAN general description

[0049] - 38.304: User Equipment (UE) procedures in idle mode and in RRC inactive state

[0050] - 38.321 Media Access Control (MAC) Protocol Specification

[0051] - 38.331: Radio Resource Control (RRC) Protocol Specification

[0052] - 37.213: Introduction of channel access procedures for unlicensed spectrum for NR-based access

[0053] - 36.355: LTE positioning protocol

[0054] - 37.355: LTE positioning protocol

[0055] Terms and abbreviations

[0056] - 5GC: 5G core network

[0057] - 5GS: 5G system

[0058] - AoA: Angle of Arrival

[0059] - AP: Access Point

[0060] - CID: Cell ID

[0061] - E-CID: Enhanced Cell ID

[0062] - GNSS: Global Navigation Satellite System

[0063] - GPS: Global Positioning System

[0064] - LCS: Location Services

[0065] - LMF: Location Management Function

[0066] - LPP: LTE Positioning Protocol

[0067] - MO-LR: Mobile Originated Location Request

[0068] - MT-LR: Mobile Terminated Location Request

[0069] - NRPPa: NR Positioning Protocol A

[0070] - OTDOA: Observed Time Difference of Arrival

[0071] - PDU: Protocol Data Unit

[0072] - PRS: Positioning Reference Signal

[0073] - RRM: Radio Resource Management

[0074] - RSSI: Received Signal Strength Indicator

[0075] - RSTD: Reference Signal Time Difference

[0076] - ToA: Time of Arrival

[0077] - TP: Transmission Point

[0078] - TRP: Transmit and Receive Point

[0079] - UE: User Equipment

[0080] - SS: Search Space

[0081] - CSS: Common Search Space

[0082] - USS: UE-specific search space

[0083] - PDCCH: Physical Downlink Control Channel

[0084] - PDSCH: Physical Downlink Shared Channel;

[0085] - PUCCH: Physical Uplink Control Channel;

[0086] - PUSCH: Physical Uplink Shared Channel;

[0087] - DCI: Downlink Control Information

[0088] - UCI: Uplink Control Information

[0089] - SI: System Information

[0090] - SIB: System Information Block

[0091] - MIB: Master Information Block

[0092] - RRC: Radio Resource Control

[0093] - DRX: Discontinuous Reception

[0094] - RNTI: Radio Network Temporary Identifier

[0095] - CSI: Channel State Information

[0096] - PCell: Primary cell

[0097] - SCell: Secondary cell

[0098] - PSCell: Primary SCG (Secondary Cell Group) cell

[0099] - CA: Carrier Aggregation

[0100] - WUS: Wake-up signal

[0101] - TX: Transmitter

[0102] - RX: Receiver

[0103] - RSTD: Reference Signal Time Difference

[0104] - RS: Reference Signal

[0105] - PRS: Positioning Reference Signal

[0106] - SRS: Sounding Reference Signal

[0107] In a wireless communication system, a user equipment (UE) receives information from a base station (BS) through a downlink (DL) and transmits information to the BS through an uplink (UL). The information transmitted and received by the BS and the UE includes data and various control information, and includes various physical channels according to the type / purpose of the information transmitted and received by the UE and the BS.

[0108] Figure 1 Illustration of physical channels used in a 3GPP NR system and a general signal transmission method using the same.

[0109] When the UE is powered on again from a power-off state or enters a new cell, in step S101, the UE performs an initial cell search process (e.g., establishes synchronization with the BS). To this end, the UE receives a synchronization signal block (SSB) from the BS. The SSB includes a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH). The UE establishes synchronization with the BS based on the PSS / SSS and obtains information such as a cell identity (ID). The UE can obtain broadcast information in the cell based on the PBCH. The UE can receive a DL reference signal (RS) during the initial cell search process to monitor the DL channel status.

[0110] After the initial cell search, the UE may acquire more specific system information by receiving a physical downlink control channel (PDCCH) and receiving a physical downlink shared channel (PDSCH) based on information of the PDCCH in step S102 .

[0111] The UE may perform a random access procedure to access the BS in steps S103 to S106. For random access, the UE may transmit a preamble to the BS on a physical random access channel (PRACH) (S103) and receive a response message to the preamble on a PDCCH and a PDSCH corresponding to the PDCCH (S104). In the case of contention-based random access, the UE may perform a contention resolution procedure by further transmitting a PRACH (S105) and receiving a PDCCH and a PDSCH corresponding to the PDCCH (S106).

[0112] After the aforementioned process, the UE may receive PDCCH / PDSCH (S107) and send a physical uplink shared channel (PUSCH) / physical uplink control channel (PUCCH) (S108) as a general downlink / uplink signal transmission process. The control information sent from the UE to the BS is called uplink control information (UCI). UCI includes hybrid automatic repeat and request acknowledgement / negative confirmation (HARQ-ACK / NACK), scheduling request (SR), channel state information (CSI), etc. CSI includes channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), etc. Although UCI is usually sent on PUCCH, UCI may be sent on PUSCH when control information and service data need to be sent simultaneously. In addition, UCI may be sent aperiodically through PUSCH according to the request / command of the network.

[0113] Figure 2Figure 1 shows the radio frame structure. In NR, uplink transmission and downlink transmission are configured in frames. Each radio frame has a length of 10ms and is divided into two 5ms half frames (HF). Each half frame is divided into five 1ms subframes (SF). A subframe is divided into one or more time slots, and the number of time slots in a subframe depends on the subcarrier spacing (SCS). Depending on the cyclic prefix (CP), each time slot includes 12 or 14 orthogonal frequency division multiplexing (OFDM) symbols. When a normal CP is used, each time slot includes 14 OFDM symbols. When an extended CP is used, each time slot includes 12 OFDM symbols.

[0114] Table 1 exemplarily shows that the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary according to the SCS when a normal CP is used.

[0115] [Table 1]

[0116]

[0117] * N slot symb : The number of symbols in a time slot

[0118] * N frame,u slot : Number of time slots in a frame

[0119] * N subframe,u slot : Number of time slots in a subframe

[0120] Table 2 shows that the number of symbols per slot, the number of slots per frame, and the number of slots per subframe vary according to the SCS when the extended CP is used.

[0121] [Table 2]

[0122]

[0123] The structure of the frame is only an example. The number of subframes, the number of time slots, and the number of symbols in a frame may vary.

[0124] In the NR system, OFDM parameter sets (e.g., SCS) may be configured differently for multiple cells aggregated for one UE. Therefore, the (absolute time) duration of a time resource (e.g., SF, time slot, or TTI) (referred to as a time unit (TU) for simplicity) consisting of the same number of symbols may be configured differently between aggregated cells. Here, the symbol may include an OFDM symbol (or CP-OFDM symbol) and an SC-FDMA symbol (or a discrete Fourier transform-spread-OFDM (DFT-s-OFDM) symbol).

[0125] Figure 3A resource grid showing a time slot. A time slot includes multiple symbols in the time domain. For example, when a normal CP is used, a time slot includes 14 symbols. However, when an extended CP is used, a time slot includes 12 symbols. A carrier includes multiple subcarriers in the frequency domain. A resource block (RB) is defined as a plurality of consecutive subcarriers (e.g., 12 consecutive subcarriers) in the frequency domain. A bandwidth part (BWP) may be defined as a plurality of consecutive physical RBs (PRBs) in the frequency domain and corresponds to a single parameter set (e.g., SCS, CP length, etc.). A carrier may include up to N (e.g., five) BWPs. Data communication may be performed via enabled BWPs, and only one BWP may be enabled for one UE. In a resource grid, each element is referred to as a resource element (RE), and one complex symbol may be mapped to each RE.

[0126] Figure 4 The figure shows an example of mapping physical channels in a time slot. In the NR system, the frame is characterized by a self-contained structure in which all DL control channels, DL or UL data, and UL channels can be included in one time slot. For example, the first N symbols of the time slot can be used to carry DL channels (e.g., PDCCH) (hereinafter, referred to as the DL control region), and the last M symbols of the time slot can be used to carry UL channels (e.g., PUCCH) (hereinafter, referred to as the UL control region). Each of N and M is an integer equal to or greater than 0. The resource region (hereinafter, referred to as the data region) between the DL control region and the UL control region can be used to send DL data (e.g., PDSCH) or UL data (e.g., PUSCH). The guard interval (GP) provides a time gap for switching from a transmit mode to a receive mode or from a receive mode to a transmit mode. Some symbols in a subframe at the DL to UL switching time can be configured as GP.

[0127] PDCCH delivers DCI. For example, PDCCH (i.e., DCI) may carry information about the transport format and resource allocation of the DL shared channel (DL-SCH), resource allocation information of the uplink shared channel (UL-SCH), paging information about the paging channel (PCH), system information about the DL-SCH, information about resource allocation of higher-layer control messages (such as RAR sent on the PDSCH), transmit power control commands, information about activation / release of configured scheduling, etc. DCI includes a cyclic redundancy check (CRC). Depending on the owner or purpose of the PDCCH, the CRC is masked with various identifiers (IDs) (e.g., radio network temporary identifier (RNTI)). For example, if the PDCCH is for a specific UE, the CRC is masked by the UE ID (e.g., cell RNTI (C-RNTI)). If the PDCCH is used for a paging message, the CRC is masked by the paging RNTI (P-RNTI). If the PDCCH is used for system information (e.g., system information block (SIB)), the CRC is masked by the system information RNTI (SI-RNTI). When the PDCCH is used for RAR, the CRC is masked by the random access RNTI (RA-RNTI).

[0128] Figure 5 FIG. 1 shows an exemplary PDSCH reception and ACK / NACK transmission process. Figure 5 , the UE may detect the PDCCH in slot #n. The PDCCH includes DL scheduling information (e.g., DCI format 1_0 or DCI format 1_1) and indicates DL assignment to PDSCH offset K0 and PDSCH-HARQ-ACK report offset K1. After receiving the PDSCH in slot #(n+K) according to the scheduling information in slot #n, the UE may send UCI on the PUCCH in slot #(n+K1). The UCI may include a HARQ-ACK response to the PDSCH. In the case where the PDSCH is configured to carry up to one TB, the HARQ-ACK response may be configured in one bit. In the case where the PDSCH is configured to carry up to two TBs, the HARQ-ACK response may be configured in two bits if spatial bundling is not configured, and may be configured in one bit if spatial bundling is configured. When slot #(n+K1) is designated as HARQ-ACK transmission timing for a plurality of PDSCHs, UCI transmitted in slot #(n+K1) includes HARQ-ACK responses to the plurality of PDSCHs.

[0129] Figure 6 FIG. 1 shows an exemplary PUSCH transmission process. Figure 6, the UE may detect the PDCCH in slot #n. The PDCCH includes DL scheduling information (e.g., DCI format 1_0 or 1_1). Then, according to the scheduling information in slot #n, the UE may send the PUSCH in slot #(n+K2). The PUSCH includes the UL-SCH TB.

[0130] position

[0131] Positioning may refer to determining the geographic location and / or velocity of the UE based on measurements of radio signals. Location information may be requested by a client (e.g., an application) associated with the UE and reported to the client. The location information may also be requested by a client within or connected to the core network. The location information may be reported in a standard format such as a format for cell-based or geographic coordinates together with an estimated error in the location and velocity of the UE and / or the positioning method used for positioning.

[0132] Figure 7 is a diagram illustrating an exemplary positioning protocol configuration for positioning a UE, to which various embodiments are applicable.

[0133] refer to Figure 7 , LTE Positioning Protocol (LPP) can be used as a point-to-point protocol between a location server (E-SMLC and / or SLP and / or LMF) and a target device (UE and / or SET) for positioning the target device using location-related measurements obtained from one or more reference resources. The target device and the location server can exchange measurement and / or location information based on signal A and / or signal B via LPP.

[0134] NRPPa may be used for information exchange between reference sources (access nodes and / or BSs and / or TPs and / or NG-RAN nodes) and location servers.

[0135] The NRPPa protocol can provide the following functions.

[0136] - E-CID position information transmission. This function allows the reference source to exchange position information with the LMF for E-CID positioning purposes.

[0137] - OTDOA information transfer. This function allows the reference source to exchange information with the LMF for OTDOA positioning purposes.

[0138] - Reporting of general error situations. This feature allows reporting of general error situations for which no function-specific error messages have been defined.

[0139] Positioning methods supported in NG-RAN may include GNSS, OTDOA, E-CID, air pressure sensor positioning, WLAN positioning, Bluetooth positioning, TBS, uplink time difference of arrival (UTDOA), etc. Although any one positioning method may be used for UE positioning, two or more positioning methods may be used for UE positioning.

[0140] OTDOA (Observed Time Difference of Arrival)

[0141] Figure 8 is a diagram illustrating an observed time difference of arrival (OTDOA) positioning method to which various embodiments are applicable;

[0142] The OTDOA positioning method uses the time measured for DL ​​signals received by the UE from multiple TPs including eNB, ng-eNB, and PRS-only TPs. The UE uses the location assistance data received from the location server to measure the time of the received DL signals. The location of the UE can be determined based on such measurement results and the geographic coordinates of neighboring TPs.

[0143] A UE connected to a gNB may request a measurement gap to perform OTDOA measurements from a TP. If the UE does not know the SFN of at least one TP in the OTDOA assistance data, the UE may use autonomous gaps to obtain the SFN of the OTDOA reference cell before requesting a measurement gap to perform reference signal time difference (RSTD) measurements.

[0144] Here, RSTD may be defined as the minimum relative time difference between two subframe boundaries received from the reference cell and the measurement cell. That is, RSTD may be calculated as the relative time difference between the start time of the subframe received from the measurement cell and the start time of the subframe from the reference cell closest to the subframe received from the measurement cell. The reference cell may be selected by the UE.

[0145] For accurate OTDOA measurement, it is necessary to measure the time of arrival (ToA) of signals received from three or more geographically distributed TPs or BSs. For example, the ToA of each of TP 1, TP 2, and TP 3 can be measured, and the RSTD of TP 1 and TP 2, the RSTD of TP 2 and TP 3, and the RSTD of TP 3 and TP 1 can be calculated based on the three ToA values. A geometric hyperbola is determined based on the calculated RSTD values, and the intersection point of the hyperbola curves can be estimated as the position of the UE. In this case, each ToA measurement may have accuracy and / or uncertainty, and the estimated position of the UE can be known as a specific range based on the measurement uncertainty.

[0146] For example, the RSTD of two TPs may be calculated based on Equation 1 below.

[0147] [Equation 1]

[0148]

[0149] In Equation 1, c is the speed of light, {x t , y t} are the (unknown) coordinates of the target UE, {x i , y i} are the (known) coordinates of the TP, and {x1, y1} are the coordinates of the reference TP (or another TP). Here, (T i -T1) is the transmission time offset between the two TPs, called the “real time difference” (RTD), and n i and n1 is the UE ToA measurement error value.

[0150] E-CID (Enhanced Cell ID)

[0151] In the cell ID (CID) positioning method, the location of the UE can be measured based on the geographic information of the UE's serving ng-eNB, serving gNB and / or serving cell. For example, the geographic information of the serving ng-eNB, serving gNB and / or serving cell can be obtained through paging, registration, etc.

[0152] In addition to the CID positioning method, the E-CID positioning method may also use additional UE measurements and / or NG-RAN radio resources to facilitate improved UE position estimation. Although the E-CID positioning method may partially utilize the same measurement method as the measurement control system on the RRC protocol, additional measurements for UE position measurement only are generally not performed. In other words, no additional measurement configuration or measurement control message may be provided for UE position measurement. The UE does not expect that additional measurement operations for position measurement only will be requested, and the UE may report measurement values ​​obtained by a generally measurable method.

[0153] For example, the serving gNB may use the E-UTRA measurements provided by the UE to implement the E-CID positioning method.

[0154] The measurement elements that can be used for E-CID positioning may be, for example, as follows.

[0155] UE measurements: E-UTRA Reference Signal Received Power (RSRP), E-UTRA Reference Signal Received Quality (RSRQ), UE E-UTRA Receive (Rx)-Transmit (Tx) Time Difference, GERAN / WLAN Reference Signal Strength Indicator (RSSI), UTRAN Common Pilot Channel (CPICH) Received Signal Code Power (RSCP) and / or UTRAN CPICH Ec / Io

[0156] E-UTRAN measurements: ng-eNB Rx-Tx time difference, timing advance (T ADV ) and / or AoA

[0157] Here, T ADV It can be divided into Type 1 and Type 2 as follows.

[0158] T ADV Type 1 = (ng-eNB Rx-Tx time difference) + (UE E-UTRA Rx-Tx time difference)

[0159] T ADV Type 2 = ng-eNB Rx-Tx time difference

[0160] AoA can be used to measure the direction of the UE. AoA is defined as the estimated angle of the UE in a counterclockwise direction from the eNB / TP. In this case, the geographic reference direction may be north. The eNB / TP may use UL signals such as SRS and / or DMRS for AoA measurement. The accuracy of AoA measurement increases as the arrangement of the antenna array increases. When the antenna array is arranged at the same interval, the signals received at adjacent antenna elements may have a constant phase rotation.

[0161] UTDOA (Uplink Time Difference of Arrival)

[0162] UTDOA is a method for determining the UE position by estimating the arrival time of SRS. When calculating the estimated SRS arrival time, the UE position can be estimated by using the serving cell as a reference cell and the arrival time difference with another cell (or base station / TP). To implement UTDOA, the E-SMLC can indicate the serving cell of the target UE in order to instruct the target UE to send SRS. In addition, the E-SMLC can provide configurations such as periodic / aperiodic SRS, bandwidth, and frequency / group / sequence hopping.

[0163] Multiple RTT (Round Trip Time)

[0164] Fig. 9 is a diagram illustrating an exemplary multiple round trip time (multi-RTT) positioning method to which various embodiments may be applicable.

[0165] refer to Fig. 9 (a) illustrates an exemplary RTT process, in which an initiating device and a responding device perform ToA measurements, and the responding device provides the ToA measurements to the initiating device for RTT measurement (calculation). The initiating device may be a TRP and / or a UE, and the responding device may be a UE and / or a TRP.

[0166] The initiating device may send an RTT measurement request, and the responding device may receive the RTT measurement request ( 1301 ).

[0167] The initiating device may send an RTT measurement signal at t0, and the responding device may obtain a ToA measurement at t1 (1303).

[0168] The responding device may send an RTT measurement signal at t2, and the initiating device may obtain a ToA measurement at t3 (1305).

[0169] The responding device may send information about [t2-t1], and the initiating device may receive the information and calculate the RTT through Equation 2 (1307). The information may be sent and received based on a separate signal or in an RTT measurement signal (1305).

[0170] [Equation 2]

[0171]

[0172] refer to Fig. 9 (b), RTT may correspond to a dual-range measurement between two devices. Positioning estimation may be performed from the corresponding information, and multi-point positioning may be used for positioning estimation. d1, d2, and d3 may be determined based on the measured RTT, and the location of the target device may be determined as the intersection of the circumferences of circles centered at BS1, BS2, and BS3 (or TRP) with radii of d1, d2, and d3, respectively.

[0173] NG-RAN positioning architecture and process

[0174] Fig.10 Figure 1 shows the positioning structure of the next generation (NG) radio access network (RAN). The NG RAN may be referred to as NRRAN or 5G RAN.

[0175] The AMF may receive a request for a positioning service related to a specific target UE from other entities (e.g., a Gateway Mobile Location Center (GMLC) or a UE), or the AMF itself may decide to initiate a positioning service on behalf of a specific target UE (e.g., in the case of an IP Multimedia Subsystem (IMS) emergency call). The AMF may then forward the positioning service request to the LMF. The LMF may process the positioning service request, wherein processing the positioning service request may include sending assistance data to the target UE for UE-based and / or UE-assisted positioning and / or positioning of the target UE. The LMF sends the positioning service result (e.g., a position estimate of the UE) to the AMF. In the event that the positioning service is requested by an entity other than the AMF (e.g., a GMLC or a UE), the AMF forwards the positioning service result to the corresponding entity.

[0176] The NG-RAN node can control TRP / TP, such as RRM or DL-PRS-only TP, to support PRS-based Terrestrial Beacon System (TBS).

[0177] The LMF may be connected to an Enhanced Serving Mobile Location Centre (E-SMLC) to access Universal Terrestrial Radio Access Network (UTRAN) information.

[0178] The LMF may be connected to a Secure User Plane Location (SUPL) Location Platform (SLP), which is responsible for positioning in the user plane.

[0179] Fig.11 Figure 1 shows an example of location services supported by NG-RAN.

[0180] When the UE is in the Connection Management Idle (CM-IDLE) state, if the AMF receives a Location Service Request, the AMF performs a network-triggered Service Request to configure the signaling for the connection to the UE and the allocation of a specific serving gNB / ng-eNB. Fig.11 , assuming the UE is in connected mode.

[0181] A location service request for the UE may be triggered, and the request may be one of steps 1101, 1102, or 1103. For example, an entity in the 5GC such as the GMLC may request a location service (e.g., positioning) for the target UE from the serving AMF (1101). Alternatively, the serving AMF may trigger a location service for the target UE itself (e.g., to find the UE for an emergency call) (1102). In addition, the UE may request a location service (e.g., positioning or assistance data transmission) from the serving AMF at the NAS level (1103).

[0182] The AMF forwards the location service request to the LMF (1104).

[0183] The LMF provides services in the NG-RAN to obtain location measurements or assistance data and initiates a positioning procedure with neighboring ng-eNB / gNB (1105).

[0184] (Instead of or in addition to step 1105 ), the LMF initiates a positioning procedure with the UE to obtain a position estimate or positioning measurements or sends position assistance data to the UE ( 1106 ).

[0185] The LMF provides a location service response (1107) to the AMF (eg, success or failure and, if requested and obtained, a location estimate for the UE).

[0186] The AMF (in step 1101 ) provides a location service response ( 1108 ) (eg, a location estimate for the UE) to the 5GC entity.

[0187] The AMF (in step 1102 ) supports the services triggered in step 1102 (eg, providing a location estimate related to an emergency call to the GMLC) based on the location service response ( 1109 ) received in step 1107 .

[0188] The AMF provides (in step 1103) a location service response (eg, a location estimate for the UE) to the UE (1110).

[0189] Timing information for carrier phase measurement (CPM)

[0190] In NR, various techniques can be used to perform positioning. As mentioned above, timing-based methods (e.g., DL-TDOA (downlink time difference of arrival), UL-RTOA (uplink round-trip time of arrival), multi-RTT), angle-based methods (e.g., AoA, AoD), and cell ID-based methods (e.g., E-CID) can be used.

[0191] In addition, Release 18 discusses support for positioning methods based on carrier phase measurement (i.e., NR carrier phase measurement). In CPM-based positioning, in order to measure the propagation delay of the RS caused by the distance between the BS and the UE, a method of performing and utilizing phase measurement based on the carrier frequency of the received signal is being discussed.

[0192] In CPM-based positioning, positioning is performed based on phase changes in the phase domain, which improves positioning accuracy. On the other hand, unlike other time-domain positioning techniques, phase changes may significantly affect positioning accuracy, and therefore it is necessary to consider the impact of phase errors. The phase value at the kth subcarrier for the RS measured at the receiver can be expressed as Equation 3.

[0193] [Equation 3]

[0194]

[0195] In Equation 3, Φ k refers to the phase value measured at the kth subcarrier, and f c and Δf represent the carrier frequency and subcarrier spacing used to transmit the RS, respectively. In addition, τ0 represents the propagation delay, which is the time taken for the RS transmitted from the transmitter to be received at the receiver, and η k Represents the noise value caused by Additive White Gaussian Noise (AWGN) and multipath effects at the receiver.

[0196] In this case, Φtx and Φ rx Denote the initial phase error values ​​occurring at the transmitter and receiver, respectively. The initial phase error is a common phase error value occurring across the entire bandwidth of the received RS. The initial phase error is caused by the physical characteristics of the components and devices in the transmitter and receiver, which makes prediction and modeling difficult.

[0197] The impact of such initial phase error will affect the positioning performance based on CPM, and therefore it needs to be eliminated. To this end, differential techniques can be used in CPM-based positioning systems. The differential technique eliminates the common error value by using the difference between two or more phase measurements with the same error. To this end, two or more measurements need to be measured at the same timing.

[0198] For example, in the case of an initial phase error at the receiver, the initial phase error can be eliminated by using the difference between two measurements measured by the same receiver at the same time. In the case of an initial phase error at the transmitter, the initial phase error can be eliminated by using the difference between measurements for RS from the same transmitter measured at two different receivers.

[0199] In this case, in order to eliminate the initial phase error at the transmitter, accurate or known location information about at least one UE / device is required. For this purpose, the use of a Positioning Reference Unit (PRU) is considered.

[0200] The PRU is a device / node with a known location that performs positioning measurements (e.g., RSTD, RSRP, UE Rx-Tx time difference measurements, etc.) and can report the measurements to a location server. In addition, the PRU sends an SRS to allow the TRP to measure the SRS from a PRU with a known location and report UL measurements (e.g., RTOA, UL-AoA, gNB Rx-Tx time difference, etc.). The measurements of the PRU can be compared with the location server's prediction of the PRU measurements for a known location. The comparison can be used to obtain information for calibrating the location measurements of nearby target devices. The information obtained for location measurement calibration can be used to correct DL / UL location measurements for other target devices.

[0201] From the perspective of the location server, a UE with a known location can act as a PRU.

[0202] When the PRU is used for NR CPM positioning, as mentioned above, the UE and PRU need to simultaneously measure the phase value for the RS sent from the same transmitter. If the UE and PRU autonomously select the RS and timing to be measured, similar to existing positioning technologies, the UE and PRU may not be able to eliminate the same initial phase error, which may be detrimental to ensuring the positioning performance of CPM. For this purpose, an agreed operation between the UE and PRU may be required.

[0203] To solve this problem and support CPM-based positioning, the present disclosure proposes a method in which the PRU provides the UE with timing for measuring RS phase and the UE uses this information.

[0204] The method described below focuses on CPM-based positioning techniques in 3GPP NR systems, but the present disclosure is not limited thereto. The method can also be applied to other positioning techniques that estimate the distance or direction between a transmitter and a UE. Therefore, the proposed method can be applied to all types of transmission methods and positioning techniques expected by a BS and a UE. In addition, the proposed method is not limited to the use of PRU. The phase value can be measured by measuring the RS, and therefore the method can also be applied to devices that use location information. In addition, the role of the PRU can be replaced by a device such as a BS or a UE.

[0205] For convenience, it is assumed that the transmitter is a BS and the receiver is a UE. In this case, a structure in which the BS transmits a PRS and the UE receives a PRS is considered. The proposed method is explained based on the operation of the UE measuring a phase value using the received PRS and reporting the calculated phase measurement result to a higher node (e.g., LMF or BS). However, the proposed method can also be applied when the transmitter is a UE and the receiver is a BS, or when both the transmitter and the receiver are UE (or BS). In addition, the proposed method can be applied when the RS used for transmission / reception and phase measurement is an SRS or SL PRS.

[0206] The proposed method can be implemented as a combination of one or more methods, or independently implemented without any combination.As long as the principle of the present disclosure is maintained, some of the used terms, symbols and sequences can be replaced with different terms, symbols or sequences.

[0207] In order to support CPM-based positioning, the present disclosure proposes a method in which a network node (e.g., a higher node such as a BS / TRP or LMF) configures a CPM window and provides information about it to other nodes (e.g., UE / PRU / TRP), and other nodes (e.g., UE / PRU / TRP) receive PRS within a time duration determined based on the received CPM window-related information and perform phase measurement for CPM-based positioning. For convenience, the network node is referred to as a higher node, and the other nodes are assumed to be UEs. However, the present disclosure is not limited thereto.

[0208] UE measurement based on CPM window

[0209] According to the PRS measurement report / configuration of the UE in the existing NR standard, the network can provide the UE with a list of PRS resources and a priority of PRS measurement, and the UE can report PRS measurement based on the list of PRS resources. However, in the existing NR standard, the configuration information provided by the network to the UE does not include information about the timing / time resources when / where the PRS measurement should be performed. Therefore, the problem in the existing NR standard is that there is no method for configuring the PRS time resource / interval (shared with the RPU) for the UE.

[0210] In other words, in order to eliminate the phase error occurring at the transmitter and the receiver, it is necessary to perform double differentiation based on the phase measured by the PRU. For double differentiation, simultaneous reception between the PRU and the target UE is required. However, the current NR specification does not provide a method for different UEs to perform simultaneous reception of the same PRS resource.

[0211] To solve this problem, the present disclosure defines a new CPM window.

[0212] The CPM window refers to the time duration and / or time resource during which the UE performs measurements for CPM-based positioning. The CPM window may appear periodically or in a specific pattern. The CPM window may be a time duration of a specific size. For example, a pattern may include information indicating a time resource belonging to the CPM window among multiple time resources. However, the present disclosure is not limited thereto.

[0213] For example, the CPM window may be defined as a time duration configured for positioning purposes supported by 3GPP, such as a measurement gap (MG) and / or a PRS processing window (PPW), or a similar duration thereto.

[0214] When the CPM window is configured, the UE may perform measurements for CPM-based positioning only within the CPM window and may not perform measurements outside the duration. For example, the time duration during which the PRU performs measurements may be defined as the CPM window, and the CPM window may be configured for the UE. Based on the measurement results from the UE and the PRU, the difference in the phase measurement results may be obtained.

[0215] If the CPM window is not configured, the UE may be configured to acquire measurements for CPM based positioning at the locations of the MG and / or PPW configured for other positioning methods.

[0216] CPM window configuration

[0217] The CPM window is the time duration configured for the UE to perform measurements for CPM purposes. Both the network and nodes (e.g., UE / PRU / TRP) performing CPM need to have the same CPM window configuration / assumption. For example, a higher node may configure the CPM window considering the measurement operation of the PRU and provide relevant information to the UE.

[0218] For example, the CPM window may be configured using at least one of the following options.

[0219] Option A-1) The CPM window can be configured by positioning related MG and / or PPW configuration. For example, the CPM window can be set to one of the MGs or PPWs used for positioning purposes. The UE receives configuration information about the MG / PPW. The UE can check whether the CPM window is included in the received configuration information. If the configuration for the CPM window is included, the UE can utilize the configuration. If the UE is configured with one or more MGs and / or PPWs, and some of the MGs and / or PPWs are set as CPM windows, the UE can be configured to have two or more MGs and / or PPWs activated simultaneously. This may be suitable for supporting CPM-based positioning as well as other positioning methods. The method described in the above option is conducive to simplifying the implementation of the UE because the method allows the reuse of existing MG and / or PPW definitions.

[0220] Option A-2) The CPM window may be composed as a subset of MGs and / or PPWs that may be used for positioning purposes. In a particular approach, if the MG and / or PPW is periodically configured to allow the UE to measure PRS, a portion of the MG and / or PPW may be used as a CPM window. For example, the CPM window may be configured to be repeated at every Nth MG based on a particular MG at a given time. As another example, a bitmap corresponding to M consecutive MGs may be defined, and the activation position of the periodically occurring CPM window may be determined by the bitmap. The method described in the above options provides an advantageous structure for supporting CPM-based positioning even when a single MG and / or PPW is configured. The method also provides a structure that allows fine-tuning of the operation of the MG and / or PPW depending on the state of the PRU.

[0221] Option A-3) The CPM window may be set to a separate duration that is different from the MG and / or PPW used for positioning purposes. If the UE is configured with both an MG and / or PPW and a CPM window, the UE may be configured to acquire measurements for CPM-based positioning at locations where the MG and / or PPW overlaps with the CPM window. If multiple MGs and / or PPWs are activated, the duration of the CPM window may be applied to all currently activated MGs and / or PPWs. This method may provide a structure that supports situations where the UE and PRU that are the positioning targets require different MG and / or PPW configurations and the locations of the UE's MG and / or PPWs can be dynamically controlled.

[0222] Relationship between CPM window and PRS resources

[0223] One of the expected benefits of applying a CPM window is differential advantage, which can be performed by obtaining measurements for the same RS at the same time as the PRU. To do this, it is necessary to specify the RS to be measured as well as timing information, such as the CPM window. For example, the RS to be measured may be the PRS from which the PRU obtains measurements. To specify the RS, a PRS resource (set) or TRPID may be used, which is a configuration unit for NR PRS.

[0224] As a specific method of specifying the PRS measured by the UE in a specific CPM window, a set of PRS resources (or a set of resource groups (e.g., TRP) that can be used for similar purposes) (hereinafter referred to as a CPM-PRS set) may be defined. This set may be configured to correspond to each CPM window. When the UE performs measurement for CPM-based positioning based on the position of a specific CPM window, the UE may be configured to obtain the measurement in the CPM-PRS set corresponding to the specific CPM window.

[0225] In this case, one CPM window may be configured to correspond to one or more CPM-PRS sets. In addition, if the UE is configured with two or more CPM windows, the CPM-PRS sets corresponding to each CPM window may be configured to be different from each other.

[0226] The configuration of the CPM-PRS set may be defined to have a common frequency region. For example, the configuration of the CPM-PRS set may be configured on a per PFL (positioning frequency layer) basis. Alternatively, the configuration of the CPM-PRS set may be defined so that if the PRS resource (set) belongs to the same PFL, only the PRS resource (set) included in the CPM-PRS set is allowed. As another example, the configuration of the CPM window may also be set on a per PFL basis. This limits the configuration of the CPM-PRS set associated with the CPM window to be based on each PFL, which may have the same effect as the previous example. If multiple CPM-PRS sets or CPM windows are configured, the UE (or PRU) may select one or a set of CPM-PRS sets or CPM windows configured on the same PFL to measure and report the PRS. These methods have the advantage of aligning the position of the carrier frequency of the PRS resource measured by the UE, thereby ensuring the consistency of the representation of the phase domain used for positioning.

[0227] About providing and obtaining configuration information of CPM window

[0228] The UE may receive information related to the CPM window configured by a higher node and apply the information. For example, the information related to the CPM window may be exchanged via a SIB (e.g., positioning SIB) sent by the BS, or exchanged via UE-specific RRC signaling sent by the BS, or exchanged via a location protocol (LPP) sent by the LMF. In addition, the information related to the CPM window may be preconfigured through the above-mentioned channel, and the detailed operation may be indicated (or recommended) while the higher node requests the UE to perform measurements for CPM-based positioning.

[0229] The UE may receive configuration information about one or more CPM windows from a higher node. This is because, when multiple PRUs participate in CPM-based positioning, each PRU may have different capabilities and conditions for obtaining measurements. Therefore, this configuration may be intended to configure a separate CPM window for each PRU to accommodate the differences.

[0230] If the UE is configured with multiple CPM windows, the CPM window actually used by the UE for measurement may be one of the multiple CPM windows. In this case, the CPM window applied to the UE may be selected according to one of the following options, or two or more methods may be used in combination.

[0231] Option B-1) One or more CPM windows may be selected from multiple CPM windows by a higher node (e.g., BS or LMF), and this selection may be explicitly signaled to the UE. In this case, the UE may be configured to perform measurements for CPM-based positioning within the indicated CPM window. If more than one CPM window is indicated to the UE, the UE may use all indicated CPM windows, or select some from the candidates of the indicated CPM windows. This option allows a higher node to indicate a suitable CPM window for each UE, taking into account the estimated location of the UE and the network environment. That is, this option may optimize CPM positioning performance, thereby providing a beneficial effect.

[0232] Option B-2) One or more CPM windows may be selected from a plurality of CPM windows by a higher node (e.g., BS or LMF) and provided to the UE in the form of assistance data. In this case, the UE may select a CPM window to be used based on the received assistance data, and may be allowed to select a CPM window other than the CPM window selected by the higher node. This option maintains the benefit of providing information about a suitable CPM window to each UE taking into account the estimated location of the UE and the network environment. At the same time, this option allows the UE to select a CPM window based on the environment estimated by the UE, thereby providing flexibility from the UE's perspective.

[0233] Option B-3) The UE may be configured to select one or more CPM windows from a plurality of configured CPM windows based on its determination. If Option B-1 or Option B-2 are used together, it may be configured to treat the situation where no information is provided by a higher node as an application of Option B-3. In addition, if necessary, the UE may be configured to report information about the CPM window selected by the UE during a measurement reporting step. The measurement reporting step refers to a step in which the UE reports to a higher node information about measurements obtained by the UE for CPM-based positioning. For example, a structure in which the UE sends information to the LMF via the LPP may be used. This option does not incur additional signaling overhead and provides the advantage of allowing the UE to select an appropriate CPM window for the UE based on its situation.

[0234] Requests from UE related to CPM window

[0235] The present disclosure proposes an operation in which a UE sends information to a higher node to request reconfiguration and re-indication of a CPM window. In the proposed method, the UE may send the request information in the form of auxiliary data. For example, with respect to information related to the CPM window, the auxiliary data may include a preference for timing information, such as the period and duration of the CPM window, information about a preferred CPM window among multiple configured CPM windows, and the like. In this case, the higher node receives the auxiliary data sent by the UE, and may consider operations such as reconfiguration or re-indication of the CPM window based on the received information. If the higher node intends to modify the configuration / indication information about the CPM window, the higher node may provide information about the modification to the UE.

[0236] The on-demand PRS request from the UE may include information about the CPM window. The method is intended to provide information about a suitable CPM window for performing operations related to the on-demand PRS when the UE performs a procedure for the on-demand PRS for CPM purposes. In this case, the higher node can support subsequent procedures for the on-demand PRS by reflecting the UE's preference for the CPM window based on the received on-demand PRS request.

[0237] Fig.12 FIG. 1 is a diagram for explaining operations of a UE and a network according to an embodiment. Fig.12 In the present invention, a network may include multiple network nodes (eg, BS / TRP and LMF server). For ease of explanation, the term "LMF" used may be replaced by another term. Fig.12 An implementation example of the aforementioned proposal is shown, and reference can be made to the previously described content to help understand Fig.12 .

[0238] refer to Fig.12 , the LMF may send the positioning-related configuration information to the UE / PRU via higher layer signaling related to the positioning protocol (1205). The positioning-related configuration information provided by the LMF may be sent to the UE / PRU via the BS / TRP.

[0239] The positioning-related configuration information provided from the network to the UE / PRU may include at least one of first configuration information about a resource set for RS (PRS resource set) and second configuration information about measurement of RS. The second configuration information may include: information about at least one resource set in which positioning-related phase measurement (e.g., CPM) will be performed among the resource sets for RS; and information about at least one time duration (e.g., CPM window) during which positioning-related phase measurement will be performed. The information about at least one time duration included in the second configuration information may include at least one of a period of the CPM window and a time domain pattern of the CPM window. The at least one time duration may be configured to be common to both the positioning target UE and the PRU.

[0240] The BS / TRP may send a positioning-related RS to the UE / PRU ( 1210 ).

[0241] The UE / PRU may measure the positioning-related RS ( 1215 ). The measurement may be performed on a PRS resource set indicated by the second configuration information, which occurs within at least one CPM window configured by the second configuration information.

[0242] When multiple CPM windows are configured, the UE / PRU may perform positioning-related phase measurement in at least one CPM window selected from among the multiple CPM windows configured by the second configuration information. The selection of the at least one CPM window may be performed based on signaling with the network.

[0243] The UE / PRU may send a measurement report on the RS (1220). The measurement report may be sent to the LMF via the BS / TRP.

[0244] Fig.13 is a diagram for explaining the operation of the first device according to the embodiment.

[0245] refer to Fig.13 The first device may receive first configuration information about a resource set for the RS and second configuration information about measurement of the RS via network signaling (A05).

[0246] The first device may perform measurement of the RS based on the first configuration information and the second configuration information (A10). The measurement of the RS may include positioning-related phase measurement. The phase measurement may include CPM for the RS.

[0247] The first device may send a measurement report based on the measurement of the RS (A15).

[0248] The second configuration information may include: information on at least one resource set on which positioning-related phase measurement is to be performed among resource sets for the RS; and information on at least one time duration during which positioning-related phase measurement is to be performed.

[0249] The information about the at least one time duration included in the second configuration information may include at least one of a period of the at least one time duration and a time domain pattern of the at least one time duration.

[0250] The second configuration information about the measurement of the RS may be received from the LMF node based on the positioning protocol.

[0251] Positioning-related phase measurements may be performed on RSs provided in at least one resource set during at least one time duration.

[0252] The first device may perform positioning-related phase measurements during a first time duration selected from among at least one time duration configured by the second configuration information. The selection of the first time duration may be performed based on signaling with the network.

[0253] The RS may be a downlink PRS. The first device may be a positioning target UE or a PRU device.

[0254] The RS may be an SRS sent by the positioning target UE. The first device may be a TRP, a BS or a PRU device.

[0255] At least one time duration may be configured to be common to both the positioning target UE and the PRU.

[0256] Fig.14 is a diagram for explaining the operation of the second device according to an embodiment. The second device may include at least one network node (eg, BS / TRP and / or LMF) in a wireless communication system.

[0257] refer to Fig.14 , the second device may send first configuration information about a resource set for the RS and second configuration information about measurement of the RS to the first device via network signaling ( B05 ).

[0258] The second device may receive a measurement report on the RS from the first device based on the first configuration information and the second configuration information (B10). The measurement report may include a result of the positioning-related phase measurement.

[0259] The second configuration information may include: information on at least one resource set on which positioning-related phase measurement is to be performed among resource sets for the RS; and information on at least one time duration during which positioning-related phase measurement is to be performed.

[0260] The information about the at least one time duration included in the second configuration information may include at least one of a period of the duration and a time domain pattern of the at least one time duration.

[0261] The second configuration information about the measurement of the RS may be provided by the LMF node based on the positioning protocol.

[0262] Positioning-related phase measurements may be performed on RSs provided in at least one resource set during at least one time duration.

[0263] Positioning-related phase measurement may be performed during a first time duration selected from among at least one time duration configured by the second configuration information. The second device may send information for selecting the first time duration to the first device via network signaling.

[0264] The RS may be a downlink PRS or an SRS.

[0265] At least one time duration may be configured to be common to both the positioning target UE and the PRU.

[0266] Fig.15 A communication system 1 to which the present disclosure is applied is illustrated.

[0267] refer to Fig.15, the communication system 1 applied to the present disclosure includes a wireless device, a base station (BS), and a network. Herein, a wireless device refers to a device that performs communication using a radio access technology (RAT) (e.g., 5G new RAT (NR) or long term evolution (LTE)), and may be referred to as a communication / radio / 5G device. The wireless device may include (but is not limited to) a robot 100a, vehicles 100b-1 and 100b-2, an extended reality (XR) device 100c, a handheld device 100d, a home appliance 100e, an Internet of Things (IoT) device 100f, and an artificial intelligence (AI) device / server 400. For example, a vehicle may include a vehicle with a wireless communication function, an autonomous driving vehicle, and a vehicle capable of performing communication between vehicles. Herein, a vehicle may include an unmanned aerial vehicle (UAV) (e.g., a drone). XR devices may include augmented reality (AR) / virtual reality (VR) / mixed reality (MR) devices, and may be implemented in the form of head mounted devices (HMDs), head up displays (HUDs) installed in vehicles, televisions, smart phones, computers, wearable devices, home appliance devices, digital signage, vehicles, robots, etc. Handheld devices may include smart phones, smart boards, wearable devices (e.g., smart watches or smart glasses), and computers (e.g., notebooks). Home appliances may include TVs, refrigerators, and washing machines. IoT devices may include sensors and smart meters. For example, a BS and a network may be implemented as wireless devices, and a specific wireless device 200a may operate as a BS / network node relative to other wireless devices.

[0268] The wireless devices 100a to 100f may be connected to the network 300 via the BS 200. AI technology may be applied to the wireless devices 100a to 100f, and the wireless devices 100a to 100f may be connected to the AI ​​server 400 via the network 300. The network 300 may be configured using a 3G network, a 4G (e.g., LTE) network, or a 5G (e.g., NR) network. Although the wireless devices 100a to 100f may communicate with each other via the BS 200 / network 300, the wireless devices 100a to 100f may perform direct communication (e.g., side link communication) with each other without passing through the BS / network. For example, the vehicles 100b-1 and 100b-2 may perform direct communication (e.g., vehicle-to-vehicle (V2V) / vehicle-to-everything (V2X) communication). An IoT device (e.g., a sensor) may perform direct communication with other IoT devices (e.g., a sensor) or other wireless devices 100a to 100f.

[0269] Wireless communication / connection 150a, 150b or 150c may be established between wireless devices 100a to 100f / BS 200 or BS 200 / BS 200. Herein, wireless communication / connection may be established through various RATs (e.g., 5G NR) such as uplink / downlink communication 150a, sidelink communication 150b (or D2D communication) or inter-BS communication (e.g., relay, integrated access backhaul (IAB)). The wireless device and the BS / wireless device may send / receive radio signals to / from each other through wireless communication / connection 150a and 150b. For example, wireless communication / connection 150a and 150b may send / receive signals through various physical channels. To this end, at least a portion of various configuration information for configuring a process for sending / receiving a radio signal, various signal processing processes (e.g., channel coding / decoding, modulation / demodulation, and resource mapping / demapping), and a resource allocation process may be performed based on various proposals of the present disclosure.

[0270] Fig.16 A wireless device suitable for use with the present disclosure is shown.

[0271] refer to Fig.16 , the first wireless device 100 and the second wireless device 200 may transmit radio signals via various RATs (eg, LTE and NR). Herein, {the first wireless device 100 and the second wireless device 200} may correspond to Fig.15 {wireless device 100x and BS 200} and / or {wireless device 100x and wireless device 100x}.

[0272] The first wireless device 100 may include one or more processors 102 and one or more memories 104, and further include one or more transceivers 106 and / or one or more antennas 108. The processor 102 may control the memory 104 and / or the transceiver 106, and may be configured to implement the description, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document. For example, the processor 102 may process the information in the memory 104 to generate first information / signals, and then transmit a radio signal including the first information / signals through the transceiver 106. The processor 102 may receive a radio signal including second information / signals through the transceiver 106, and then store information obtained by processing the second information / signals in the memory 104. The memory 104 may be connected to the processor 102, and may store various information related to the operation of the processor 102. For example, the memory 104 may store software codes including commands for executing part or all of the processes controlled by the processor 102 or for executing the description, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document. Herein, the processor 102 and the memory 104 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 106 may be connected to the processor 102 and transmit and / or receive radio signals through one or more antennas 108. Each transceiver 106 may include a transmitter and / or a receiver. The transceiver 106 may be used interchangeably with a radio frequency (RF) unit. In embodiments of the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0273] The second wireless device 200 may include one or more processors 202 and one or more memories 204, and further include one or more transceivers 206 and / or one or more antennas 208. The processor 202 may control the memory 204 and / or the transceiver 206, and may be configured to implement the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. For example, the processor 202 may process the information in the memory 204 to generate third information / signals, and then transmit a radio signal including the third information / signals through the transceiver 206. The processor 202 may receive a radio signal including fourth information / signals through the transceiver 206, and then store information obtained by processing the fourth information / signals in the memory 204. The memory 204 may be connected to the processor 202, and may store various information related to the operation of the processor 202. For example, the memory 204 may store software codes including commands for executing part or all of the processes controlled by the processor 202 or for executing the description, functions, processes, proposals, methods, and / or operation flowcharts disclosed in this document. Herein, the processor 202 and the memory 204 may be part of a communication modem / circuit / chip designed to implement a RAT (e.g., LTE or NR). The transceiver 206 may be connected to the processor 202 and transmit and / or receive radio signals through one or more antennas 208. Each transceiver 206 may include a transmitter and / or a receiver. The transceiver 206 may be used interchangeably with an RF unit. In an embodiment of the present disclosure, a wireless device may represent a communication modem / circuit / chip.

[0274] In the following, the hardware elements of the wireless devices 100 and 200 will be described in more detail. One or more protocol layers may be implemented by (but not limited to) one or more processors 102 and 202. For example, one or more processors 102 and 202 may implement one or more layers (e.g., functional layers such as PHY, MAC, RLC, PDCP, RRC, and SDAP). One or more processors 102 and 202 may generate one or more protocol data units (PDUs) and / or one or more service data units (SDUs) according to the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document. One or more processors 102 and 202 may generate messages, control information, data, or information according to the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document. The one or more processors 102 and 202 may generate a signal (e.g., a baseband signal) including a PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document, and provide the generated signal to the one or more transceivers 106 and 206. The one or more processors 102 and 202 may receive a signal (e.g., a baseband signal) from the one or more transceivers 106 and 206 and obtain the PDU, SDU, message, control information, data, or information according to the description, functions, procedures, proposals, methods, and / or operational flowcharts disclosed in this document.

[0275] One or more processors 102 and 202 may be referred to as controllers, microcontrollers, microprocessors, or microcomputers. One or more processors 102 and 202 may be implemented by hardware, firmware, software, or a combination thereof. As an example, one or more application specific integrated circuits (ASICs), one or more digital signal processors (DSPs), one or more digital signal processing devices (DSPDs), one or more programmable logic devices (PLDs), or one or more field programmable gate arrays (FPGAs) may be included in one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software, and the firmware or software may be configured to include modules, processes, or functions. Firmware or software configured to execute the descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document may be included in one or more processors 102 and 202 or stored in one or more memories 104 and 204 to be driven by one or more processors 102 and 202. The descriptions, functions, processes, proposals, methods, and / or operational flowcharts disclosed in this document may be implemented using firmware or software in the form of codes, commands, and / or command sets.

[0276] One or more memories 104 and 204 may be connected to one or more processors 102 and 202 and store various types of data, signals, messages, information, programs, codes, instructions and / or commands. One or more memories 104 and 204 may be configured by read-only memory (ROM), random access memory (RAM), electrically erasable programmable read-only memory (EPROM), flash memory, hard disk drive, register, cache memory, computer-readable storage medium and / or a combination thereof. One or more memories 104 and 204 may be located inside and / or outside of one or more processors 102 and 202. One or more memories 104 and 204 may be connected to one or more processors 102 and 202 via various technologies such as wired or wireless connections.

[0277] One or more transceivers 106 and 206 may send user data, control information and / or radio signals / channels mentioned in the method and / or operation flow chart of this document to one or more other devices. One or more transceivers 106 and 206 may receive user data, control information and / or radio signals / channels mentioned in the description, function, process, proposal, method and / or operation flow chart disclosed in this document from one or more other devices. For example, one or more transceivers 106 and 206 may be connected to one or more processors 102 and 202 and send and receive radio signals. For example, one or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may send user data, control information or radio signals to one or more other devices. One or more processors 102 and 202 may perform control so that one or more transceivers 106 and 206 may receive user data, control information or radio signals from one or more other devices. One or more transceivers 106 and 206 may be connected to one or more antennas 108 and 208, and one or more transceivers 106 and 206 may be configured to send and receive user data, control information and / or radio signals / channels mentioned in the description, functions, processes, proposals, methods and / or operation flow charts disclosed in this document through one or more antennas 108 and 208. In this document, one or more antennas may be multiple physical antennas or multiple logical antennas (e.g., antenna ports). One or more transceivers 106 and 206 may convert received radio signals / channels, etc. from RF band signals to baseband signals so as to process received user data, control information, radio signals / channels, etc. using one or more processors 102 and 202. One or more transceivers 106 and 206 may convert user data, control information, radio signals / channels, etc. processed using one or more processors 102 and 202 from baseband signals to RF band signals. To this end, one or more transceivers 106 and 206 may include (analog) oscillators and / or filters.

[0278] Fig.17 Another example of a wireless device applicable to the present disclosure is shown. The wireless device can be used according to the usage / service (reference Fig.15 ) are implemented in various forms.

[0279] refer to Fig.17 , the wireless devices 100 and 200 may correspond to Fig.16 The wireless devices 100 and 200 of the present invention may be configured by various elements, components, units / parts and / or modules. For example, each of the wireless devices 100 and 200 may include a communication unit 110, a control unit 120, a memory unit 130 and an additional component 140. The communication unit may include a communication circuit 112 and a transceiver 114. For example, the communication circuit 112 may include Fig.16 The control unit 120 is electrically connected to the communication unit 110, the memory 130, and the additional components 140, and controls the overall operation of the wireless device. For example, the control unit 120 may control the electrical / mechanical operation of the wireless device based on the program / code / command / information stored in the memory unit 130. The control unit 120 may send the information stored in the memory unit 130 to the outside (e.g., other communication devices) via the communication unit 110 through a wireless / wired interface, or store the information received from the outside (e.g., other communication devices) via the communication unit 110 in the memory unit 130 through a wireless / wired interface.

[0280] The additional components 140 may be configured differently depending on the type of wireless device. For example, the additional components 140 may include at least one of a power supply unit / battery, an input / output (I / O) unit, a drive unit, and a computing unit. The wireless device may be configured in the form of, but not limited to, a robot ( Fig.15 100a), vehicles ( Fig.15 100b-1 and 100b-2), XR devices ( Fig.15 100c), handheld devices ( Fig.15 100d), household appliances ( Fig.15 100e), IoT devices ( Fig.15 100f), digital broadcasting terminals, holographic equipment, public safety equipment, MTC equipment, medical equipment, fintech equipment (or financial equipment), security equipment, climate / environmental equipment, AI servers / equipment ( Fig.15 400), BS ( Fig.15 200), network nodes, etc. The wireless device can be used in a mobile or fixed location according to the use case / service.

[0281] exist Fig.17 In the wireless devices 100 and 200, various elements, components, units / parts and / or modules in the wireless devices 100 and 200 may all be connected to each other through a wired interface, or at least a part thereof may be wirelessly connected through the communication unit 110. For example, in each of the wireless devices 100 and 200, the control unit 120 and the communication unit 110 may be wired, and the control unit 120 and the first unit (e.g., 130 and 140) may be wirelessly connected through the communication unit 110. The various elements, components, units / parts and / or modules within the wireless devices 100 and 200 may also include one or more elements. For example, the control unit 120 may be configured by a collection of one or more processors. As an example, the control unit 120 may be configured by a collection of a communication control processor, an application processor, an electronic control unit (ECU), a graphics processing unit and a memory control processor. As another example, the memory 130 may be configured by a random access memory (RAM), a dynamic RAM (DRAM), a read-only memory (ROM)), a flash memory, a volatile memory, a non-volatile memory and / or a combination thereof.

[0282] Fig.18 A vehicle or an autonomous vehicle applied to the present disclosure is shown. The vehicle or the autonomous vehicle may be implemented by a mobile robot, a car, a train, a manned / unmanned aerial vehicle (AV), a ship, etc.

[0283] refer to Fig.18 , the vehicle or autonomous driving vehicle 100 may include an antenna unit 108, a communication unit 110, a control unit 120, a drive unit 140a, a power supply unit 140b, a sensor unit 140c, and an autonomous driving unit 140d. The antenna unit 108 may be configured as a part of the communication unit 110. Blocks 110 / 130 / 140a to 140d correspond to Fig.17 Block 110 / 130 / 140.

[0284] The communication unit 110 may send and receive signals (e.g., data and control signals) to and from external devices such as other vehicles, BSs (e.g., gNBs and roadside units), and servers. The control unit 120 may perform various operations by controlling elements of the vehicle or autonomous driving vehicle 100. The control unit 120 may include an electronic control unit (ECU). The drive unit 140a may enable the vehicle or autonomous driving vehicle 100 to travel on a road. The drive unit 140a may include an engine, a motor, a power system, wheels, brakes, a steering device, etc. The power supply unit 140b may supply power to the vehicle or autonomous driving vehicle 100 and include a wired / wireless charging circuit, a battery, etc. The sensor unit 140c may acquire vehicle status, surrounding environment information, user information, etc. The sensor unit 140c may include an inertial measurement unit (IMU) sensor, a collision sensor, a wheel sensor, a speed sensor, a slope sensor, a weight sensor, a heading sensor, a position module, a vehicle forward / reverse sensor, a battery sensor, a fuel sensor, a tire sensor, a steering sensor, a temperature sensor, a depth sensor, an ultrasonic sensor, a lighting sensor, a pedal position sensor, etc. The autonomous driving unit 140d may implement a technology for maintaining a lane in which the vehicle is traveling, a technology for automatically adjusting a speed (e.g., adaptive cruise control), a technology for autonomously traveling along a determined path, a technology for traveling by automatically setting a path if a destination is set, and the like.

[0285] For example, the communication unit 110 may receive map data, traffic information data, etc. from an external server. The autonomous driving unit 140d may generate an autonomous driving path and a driving plan from the obtained data. The control unit 120 may control the drive unit 140a so that the vehicle or the autonomous driving vehicle 100 may move along the autonomous driving path according to the driving plan (e.g., speed / direction control). In the middle of autonomous driving, the communication unit 110 may aperiodically / periodically obtain the latest traffic information data from the external server and obtain surrounding traffic information data from neighboring vehicles. In the middle of autonomous driving, the sensor unit 140c may obtain vehicle status and / or surrounding environment information. The autonomous driving unit 140d may update the autonomous driving path and driving plan based on the newly obtained data / information. The communication unit 110 may transmit information about the vehicle position, autonomous driving path, and / or driving plan to the external server. The external server may predict traffic information data using AI technology, etc. based on information collected from the vehicle or autonomous driving vehicle, and provide the predicted traffic information data to the vehicle or autonomous driving vehicle.

[0286] The above-mentioned embodiments correspond to the combination of elements and features of the present disclosure in a prescribed form. And, unless each element or feature is explicitly mentioned, each element or feature can be considered to be selective. Each of the elements or features can be implemented in a form that cannot be combined with other elements or features. In addition, by partially combining elements and / or features together, it is possible to implement the embodiments of the present disclosure. The operation sequence explained for each embodiment of the present disclosure can be modified. Some configurations or features of an embodiment can be included in another embodiment, or can replace the corresponding configuration or features of another embodiment. And, the embodiment can be configured by combining claims that do not have an explicit reference relationship in the attached claims, or can be included as a new claim obtained by modification after submitting the application.

[0287] Those skilled in the art will appreciate that the present disclosure can be performed in other specific ways different from the ways set forth herein without departing from the spirit and essential characteristics of the present disclosure. Therefore, the above embodiments are interpreted in all respects as illustrative and not restrictive. The scope of the present disclosure should be determined by the appended claims and their legal equivalents, rather than by the above description, and all changes falling within the meaning and equivalent range of the appended claims should be included therein.

[0288] Industrial Applicability

[0289] The present disclosure is applicable to UE, BS or other devices in a wireless mobile communication system.

Claims

1. A method for measuring a signal by a first device in a wireless communication system, the method comprising: receiving, via network signaling, first configuration information regarding a resource set for a reference signal and second configuration information regarding measurement of the reference signal; Performing measurement of the reference signal based on the first configuration information and the second configuration information; as well as sending a measurement report based on the measurement of the reference signal, The measurement of the reference signal includes positioning related phase measurement, and Therein, the second configuration information comprises information about at least one resource set among the resource sets used for the reference signal in which the positioning-related phase measurement is to be performed, and information about at least one time duration during which the positioning-related phase measurement is to be performed.

2. The method according to claim 1, wherein: The information about the at least one time duration included in the second configuration information includes at least one of a period of the at least one time duration and a time domain pattern of the at least one time duration.

3. The method according to claim 1, wherein: The second configuration information regarding measurement of the reference signal is received from a location management function (LMF) node based on a positioning protocol.

4. The method according to claim 1, wherein: During the at least one time duration, the positioning related phase measurements are performed on reference signals provided in the at least one set of resources.

5. The method according to claim 1, wherein: The first device performs the positioning-related phase measurement during a first time duration selected from among the at least one time duration configured by the second configuration information.

6. The method according to claim 5, wherein: The selecting of the first time duration is performed based on network signaling.

7. The method according to claim 1, wherein: The reference signal is a downlink positioning reference signal (PRS), and The first device is a positioning target user equipment (UE) or a positioning reference unit (PRU) device.

8. The method according to claim 1, wherein: The reference signal is a sounding reference signal (SRS) sent by a positioning target user equipment (UE), and The first device is a Transmitting and Receiving Point (TRP) or a Positioning Reference Unit (PRU) device.

9. The method according to claim 1, wherein: The at least one time duration is configured to be common to both a positioning target user equipment (UE) and a positioning reference unit (PRU).

10. A processor-readable recording medium having recorded thereon a program for executing the method of claim 1.

11. A first device for wireless communication, the first device comprising: a memory configured to store instructions; as well as a processor configured to perform operations by executing the instructions, The operations of the processor include: receiving, via network signaling, first configuration information regarding a resource set for a reference signal and second configuration information regarding measurement of the reference signal; performing measurement of the reference signal based on the first configuration information and the second configuration information; and sending a measurement report based on the measurement of the reference signal, The measurement of the reference signal includes positioning related phase measurement, and Therein, the second configuration information comprises information about at least one resource set among the resource sets used for the reference signal in which the positioning-related phase measurement is to be performed, and information about at least one time duration during which the positioning-related phase measurement is to be performed.

12. The first device according to claim 11, further comprising a transceiver, in, The first device is a user equipment (UE) operating in a wireless communication system.

13. The first device according to claim 11, wherein: The apparatus is a processing device configured to control a user equipment (UE) operating in a wireless communication system.

14. A method for receiving, by a second device, a measurement report from a first device in a wireless communication system, the method comprising: Sending, via network signaling, first configuration information about a resource set for a reference signal and second configuration information about measurement of the reference signal to the first device; as well as receiving a measurement report on the reference signal from the first device based on the first configuration information and the second configuration information, The measurement report includes the result of the positioning related phase measurement, and Therein, the second configuration information comprises information about at least one resource set among the resource sets used for the reference signal in which the positioning-related phase measurement is to be performed, and information about at least one time duration during which the positioning-related phase measurement is to be performed.

15. A second device configured to receive a measurement report from a first device in a wireless communication system, the second device comprising: a memory storing instructions; as well as a processor configured to perform operations by executing the instructions, The operations of the processor include: sending, via network signaling, first configuration information about a resource set for a reference signal and second configuration information about measurement of the reference signal to the first device; and receiving a measurement report on the reference signal from the first device based on the first configuration information and the second configuration information, The measurement report includes the result of the positioning related phase measurement, and Therein, the second configuration information comprises information about at least one resource set among the resource sets used for the reference signal in which the positioning-related phase measurement is to be performed, and information about at least one time duration during which the positioning-related phase measurement is to be performed.

Images